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5ef8e39fa7
fragattacks/src/drivers/driver_nl80211.c
Jouni Malinen 5ef8e39fa7 nl80211: Fix interface-in-different-bridge case 
The local ifindex list needs to be updated only if the current bridge
interface is the correct one. If hostapd is going to move the interface
to another bridge, the old bridge ifindex must not be added. In
addition, when removing the bridge interface on deinit, it may need to
be set down to allow bridge removal.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-20 21:00:08 +02:00

8269 lines
216 KiB
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/*
* Driver interaction with Linux nl80211/cfg80211
* Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
* Copyright (c) 2003-2004, Instant802 Networks, Inc.
* Copyright (c) 2005-2006, Devicescape Software, Inc.
* Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
* Copyright (c) 2009-2010, Atheros Communications
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include <sys/types.h>
#include <fcntl.h>
#include <net/if.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#ifdef CONFIG_LIBNL3_ROUTE
#include <netlink/route/neighbour.h>
#endif /* CONFIG_LIBNL3_ROUTE */
#include <linux/rtnetlink.h>
#include <netpacket/packet.h>
#include <linux/errqueue.h>
#include "common.h"
#include "eloop.h"
#include "common/qca-vendor.h"
#include "common/qca-vendor-attr.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "l2_packet/l2_packet.h"
#include "netlink.h"
#include "linux_defines.h"
#include "linux_ioctl.h"
#include "radiotap.h"
#include "radiotap_iter.h"
#include "rfkill.h"
#include "driver_nl80211.h"
#ifndef CONFIG_LIBNL20
/*
* libnl 1.1 has a bug, it tries to allocate socket numbers densely
* but when you free a socket again it will mess up its bitmap and
* and use the wrong number the next time it needs a socket ID.
* Therefore, we wrap the handle alloc/destroy and add our own pid
* accounting.
*/
static uint32_t port_bitmap[32] = { 0 };
static struct nl_handle *nl80211_handle_alloc(void *cb)
{
struct nl_handle *handle;
uint32_t pid = getpid() & 0x3FFFFF;
int i;
handle = nl_handle_alloc_cb(cb);
for (i = 0; i < 1024; i++) {
if (port_bitmap[i / 32] & (1 << (i % 32)))
continue;
port_bitmap[i / 32] |= 1 << (i % 32);
pid += i << 22;
break;
}
nl_socket_set_local_port(handle, pid);
return handle;
}
static void nl80211_handle_destroy(struct nl_handle *handle)
{
uint32_t port = nl_socket_get_local_port(handle);
port >>= 22;
port_bitmap[port / 32] &= ~(1 << (port % 32));
nl_handle_destroy(handle);
}
#endif /* CONFIG_LIBNL20 */
#ifdef ANDROID
/* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
#undef nl_socket_set_nonblocking
#define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
#define genl_ctrl_resolve android_genl_ctrl_resolve
#endif /* ANDROID */
static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
{
struct nl_handle *handle;
handle = nl80211_handle_alloc(cb);
if (handle == NULL) {
wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
"callbacks (%s)", dbg);
return NULL;
}
if (genl_connect(handle)) {
wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
"netlink (%s)", dbg);
nl80211_handle_destroy(handle);
return NULL;
}
return handle;
}
static void nl_destroy_handles(struct nl_handle **handle)
{
if (*handle == NULL)
return;
nl80211_handle_destroy(*handle);
*handle = NULL;
}
#if __WORDSIZE == 64
#define ELOOP_SOCKET_INVALID (intptr_t) 0x8888888888888889ULL
#else
#define ELOOP_SOCKET_INVALID (intptr_t) 0x88888889ULL
#endif
static void nl80211_register_eloop_read(struct nl_handle **handle,
eloop_sock_handler handler,
void *eloop_data)
{
nl_socket_set_nonblocking(*handle);
eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
eloop_data, *handle);
*handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
}
static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
{
*handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
eloop_unregister_read_sock(nl_socket_get_fd(*handle));
nl_destroy_handles(handle);
}
static void nl80211_global_deinit(void *priv);
static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
struct hostapd_freq_params *freq);
static int
wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
const u8 *set_addr, int first,
const char *driver_params);
static int nl80211_send_frame_cmd(struct i802_bss *bss,
unsigned int freq, unsigned int wait,
const u8 *buf, size_t buf_len, u64 *cookie,
int no_cck, int no_ack, int offchanok);
static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
int report);
static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
static int nl80211_set_channel(struct i802_bss *bss,
struct hostapd_freq_params *freq, int set_chan);
static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
int ifindex, int disabled);
static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
int reset_mode);
static int i802_set_iface_flags(struct i802_bss *bss, int up);
static int nl80211_set_param(void *priv, const char *param);
/* Converts nl80211_chan_width to a common format */
enum chan_width convert2width(int width)
{
switch (width) {
case NL80211_CHAN_WIDTH_20_NOHT:
return CHAN_WIDTH_20_NOHT;
case NL80211_CHAN_WIDTH_20:
return CHAN_WIDTH_20;
case NL80211_CHAN_WIDTH_40:
return CHAN_WIDTH_40;
case NL80211_CHAN_WIDTH_80:
return CHAN_WIDTH_80;
case NL80211_CHAN_WIDTH_80P80:
return CHAN_WIDTH_80P80;
case NL80211_CHAN_WIDTH_160:
return CHAN_WIDTH_160;
}
return CHAN_WIDTH_UNKNOWN;
}
int is_ap_interface(enum nl80211_iftype nlmode)
{
return nlmode == NL80211_IFTYPE_AP ||
nlmode == NL80211_IFTYPE_P2P_GO;
}
int is_sta_interface(enum nl80211_iftype nlmode)
{
return nlmode == NL80211_IFTYPE_STATION ||
nlmode == NL80211_IFTYPE_P2P_CLIENT;
}
static int is_p2p_net_interface(enum nl80211_iftype nlmode)
{
return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
nlmode == NL80211_IFTYPE_P2P_GO;
}
struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
int ifindex)
{
struct i802_bss *bss;
for (bss = drv->first_bss; bss; bss = bss->next) {
if (bss->ifindex == ifindex)
return bss;
}
return NULL;
}
static int is_mesh_interface(enum nl80211_iftype nlmode)
{
return nlmode == NL80211_IFTYPE_MESH_POINT;
}
void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
{
if (drv->associated)
os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
drv->associated = 0;
os_memset(drv->bssid, 0, ETH_ALEN);
}
/* nl80211 code */
static int ack_handler(struct nl_msg *msg, void *arg)
{
int *err = arg;
*err = 0;
return NL_STOP;
}
static int finish_handler(struct nl_msg *msg, void *arg)
{
int *ret = arg;
*ret = 0;
return NL_SKIP;
}
static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
void *arg)
{
int *ret = arg;
*ret = err->error;
return NL_SKIP;
}
static int no_seq_check(struct nl_msg *msg, void *arg)
{
return NL_OK;
}
static int send_and_recv(struct nl80211_global *global,
struct nl_handle *nl_handle, struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *),
void *valid_data)
{
struct nl_cb *cb;
int err = -ENOMEM;
if (!msg)
return -ENOMEM;
cb = nl_cb_clone(global->nl_cb);
if (!cb)
goto out;
err = nl_send_auto_complete(nl_handle, msg);
if (err < 0)
goto out;
err = 1;
nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
if (valid_handler)
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
valid_handler, valid_data);
while (err > 0) {
int res = nl_recvmsgs(nl_handle, cb);
if (res < 0) {
wpa_printf(MSG_INFO,
"nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
}
}
out:
nl_cb_put(cb);
nlmsg_free(msg);
return err;
}
int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *),
void *valid_data)
{
return send_and_recv(drv->global, drv->global->nl, msg,
valid_handler, valid_data);
}
struct family_data {
const char *group;
int id;
};
static int family_handler(struct nl_msg *msg, void *arg)
{
struct family_data *res = arg;
struct nlattr *tb[CTRL_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *mcgrp;
int i;
nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb[CTRL_ATTR_MCAST_GROUPS])
return NL_SKIP;
nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
nla_len(mcgrp), NULL);
if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
!tb2[CTRL_ATTR_MCAST_GRP_ID] ||
os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
res->group,
nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
continue;
res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
break;
};
return NL_SKIP;
}
static int nl_get_multicast_id(struct nl80211_global *global,
const char *family, const char *group)
{
struct nl_msg *msg;
int ret;
struct family_data res = { group, -ENOENT };
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
0, 0, CTRL_CMD_GETFAMILY, 0) ||
nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv(global, global->nl, msg, family_handler, &res);
if (ret == 0)
ret = res.id;
return ret;
}
void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg, int flags, uint8_t cmd)
{
return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
0, flags, cmd, 0);
}
static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
{
if (bss->wdev_id_set)
return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
}
struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
{
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return NULL;
if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
nl80211_set_iface_id(msg, bss) < 0) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
static struct nl_msg *
nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
int flags, uint8_t cmd)
{
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return NULL;
if (!nl80211_cmd(drv, msg, flags, cmd) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
uint8_t cmd)
{
return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
}
struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
{
return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
}
struct wiphy_idx_data {
int wiphy_idx;
enum nl80211_iftype nlmode;
u8 *macaddr;
};
static int netdev_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wiphy_idx_data *info = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_WIPHY])
info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
if (tb[NL80211_ATTR_IFTYPE])
info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
if (tb[NL80211_ATTR_MAC] && info->macaddr)
os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
ETH_ALEN);
return NL_SKIP;
}
int nl80211_get_wiphy_index(struct i802_bss *bss)
{
struct nl_msg *msg;
struct wiphy_idx_data data = {
.wiphy_idx = -1,
.macaddr = NULL,
};
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
return -1;
if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
return data.wiphy_idx;
return -1;
}
static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
{
struct nl_msg *msg;
struct wiphy_idx_data data = {
.nlmode = NL80211_IFTYPE_UNSPECIFIED,
.macaddr = NULL,
};
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
return NL80211_IFTYPE_UNSPECIFIED;
if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
return data.nlmode;
return NL80211_IFTYPE_UNSPECIFIED;
}
static int nl80211_get_macaddr(struct i802_bss *bss)
{
struct nl_msg *msg;
struct wiphy_idx_data data = {
.macaddr = bss->addr,
};
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
return -1;
return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
}
static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
struct nl80211_wiphy_data *w)
{
struct nl_msg *msg;
int ret;
msg = nlmsg_alloc();
if (!msg)
return -1;
if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
"failed: ret=%d (%s)",
ret, strerror(-ret));
}
return ret;
}
static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
{
struct nl80211_wiphy_data *w = eloop_ctx;
int res;
wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
res = nl_recvmsgs(handle, w->nl_cb);
if (res < 0) {
wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
}
}
static int process_beacon_event(struct nl_msg *msg, void *arg)
{
struct nl80211_wiphy_data *w = arg;
struct wpa_driver_nl80211_data *drv;
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *tb[NL80211_ATTR_MAX + 1];
union wpa_event_data event;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (gnlh->cmd != NL80211_CMD_FRAME) {
wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
gnlh->cmd);
return NL_SKIP;
}
if (!tb[NL80211_ATTR_FRAME])
return NL_SKIP;
dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
wiphy_list) {
os_memset(&event, 0, sizeof(event));
event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
}
return NL_SKIP;
}
static struct nl80211_wiphy_data *
nl80211_get_wiphy_data_ap(struct i802_bss *bss)
{
static DEFINE_DL_LIST(nl80211_wiphys);
struct nl80211_wiphy_data *w;
int wiphy_idx, found = 0;
struct i802_bss *tmp_bss;
if (bss->wiphy_data != NULL)
return bss->wiphy_data;
wiphy_idx = nl80211_get_wiphy_index(bss);
dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
if (w->wiphy_idx == wiphy_idx)
goto add;
}
/* alloc new one */
w = os_zalloc(sizeof(*w));
if (w == NULL)
return NULL;
w->wiphy_idx = wiphy_idx;
dl_list_init(&w->bsss);
dl_list_init(&w->drvs);
w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!w->nl_cb) {
os_free(w);
return NULL;
}
nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
w);
w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
"wiphy beacons");
if (w->nl_beacons == NULL) {
os_free(w);
return NULL;
}
if (nl80211_register_beacons(bss->drv, w)) {
nl_destroy_handles(&w->nl_beacons);
os_free(w);
return NULL;
}
nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
dl_list_add(&nl80211_wiphys, &w->list);
add:
/* drv entry for this bss already there? */
dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
if (tmp_bss->drv == bss->drv) {
found = 1;
break;
}
}
/* if not add it */
if (!found)
dl_list_add(&w->drvs, &bss->drv->wiphy_list);
dl_list_add(&w->bsss, &bss->wiphy_list);
bss->wiphy_data = w;
return w;
}
static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
{
struct nl80211_wiphy_data *w = bss->wiphy_data;
struct i802_bss *tmp_bss;
int found = 0;
if (w == NULL)
return;
bss->wiphy_data = NULL;
dl_list_del(&bss->wiphy_list);
/* still any for this drv present? */
dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
if (tmp_bss->drv == bss->drv) {
found = 1;
break;
}
}
/* if not remove it */
if (!found)
dl_list_del(&bss->drv->wiphy_list);
if (!dl_list_empty(&w->bsss))
return;
nl80211_destroy_eloop_handle(&w->nl_beacons);
nl_cb_put(w->nl_cb);
dl_list_del(&w->list);
os_free(w);
}
static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!drv->associated)
return -1;
os_memcpy(bssid, drv->bssid, ETH_ALEN);
return 0;
}
static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!drv->associated)
return -1;
os_memcpy(ssid, drv->ssid, drv->ssid_len);
return drv->ssid_len;
}
static void wpa_driver_nl80211_event_newlink(
struct wpa_driver_nl80211_data *drv, char *ifname)
{
union wpa_event_data event;
if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
if (if_nametoindex(drv->first_bss->ifname) == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
drv->first_bss->ifname);
return;
}
if (!drv->if_removed)
return;
wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
drv->first_bss->ifname);
drv->if_removed = 0;
}
os_memset(&event, 0, sizeof(event));
os_strlcpy(event.interface_status.ifname, ifname,
sizeof(event.interface_status.ifname));
event.interface_status.ievent = EVENT_INTERFACE_ADDED;
wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
}
static void wpa_driver_nl80211_event_dellink(
struct wpa_driver_nl80211_data *drv, char *ifname)
{
union wpa_event_data event;
if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
if (drv->if_removed) {
wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
ifname);
return;
}
wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
ifname);
drv->if_removed = 1;
} else {
wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
ifname);
}
os_memset(&event, 0, sizeof(event));
os_strlcpy(event.interface_status.ifname, ifname,
sizeof(event.interface_status.ifname));
event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
}
static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
u8 *buf, size_t len)
{
int attrlen, rta_len;
struct rtattr *attr;
attrlen = len;
attr = (struct rtattr *) buf;
rta_len = RTA_ALIGN(sizeof(struct rtattr));
while (RTA_OK(attr, attrlen)) {
if (attr->rta_type == IFLA_IFNAME) {
if (os_strcmp(((char *) attr) + rta_len,
drv->first_bss->ifname) == 0)
return 1;
else
break;
}
attr = RTA_NEXT(attr, attrlen);
}
return 0;
}
static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
int ifindex, u8 *buf, size_t len)
{
if (drv->ifindex == ifindex)
return 1;
if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
"interface");
wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
return 1;
}
return 0;
}
static struct wpa_driver_nl80211_data *
nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
{
struct wpa_driver_nl80211_data *drv;
dl_list_for_each(drv, &global->interfaces,
struct wpa_driver_nl80211_data, list) {
if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
have_ifidx(drv, idx))
return drv;
}
return NULL;
}
static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
struct ifinfomsg *ifi,
u8 *buf, size_t len)
{
struct nl80211_global *global = ctx;
struct wpa_driver_nl80211_data *drv;
int attrlen;
struct rtattr *attr;
u32 brid = 0;
char namebuf[IFNAMSIZ];
char ifname[IFNAMSIZ + 1];
char extra[100], *pos, *end;
drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
if (!drv) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
ifi->ifi_index);
return;
}
extra[0] = '\0';
pos = extra;
end = pos + sizeof(extra);
ifname[0] = '\0';
attrlen = len;
attr = (struct rtattr *) buf;
while (RTA_OK(attr, attrlen)) {
switch (attr->rta_type) {
case IFLA_IFNAME:
if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
break;
os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
ifname[RTA_PAYLOAD(attr)] = '\0';
break;
case IFLA_MASTER:
brid = nla_get_u32((struct nlattr *) attr);
pos += os_snprintf(pos, end - pos, " master=%u", brid);
break;
case IFLA_WIRELESS:
pos += os_snprintf(pos, end - pos, " wext");
break;
case IFLA_OPERSTATE:
pos += os_snprintf(pos, end - pos, " operstate=%u",
nla_get_u32((struct nlattr *) attr));
break;
case IFLA_LINKMODE:
pos += os_snprintf(pos, end - pos, " linkmode=%u",
nla_get_u32((struct nlattr *) attr));
break;
}
attr = RTA_NEXT(attr, attrlen);
}
extra[sizeof(extra) - 1] = '\0';
wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
ifi->ifi_index, ifname, extra, ifi->ifi_family,
ifi->ifi_flags,
(ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
(ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
(ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
(ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
if (if_indextoname(ifi->ifi_index, namebuf) &&
linux_iface_up(drv->global->ioctl_sock,
drv->first_bss->ifname) > 0) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
"event since interface %s is up", namebuf);
drv->ignore_if_down_event = 0;
return;
}
wpa_printf(MSG_DEBUG, "nl80211: Interface down");
if (drv->ignore_if_down_event) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
"event generated by mode change");
drv->ignore_if_down_event = 0;
} else {
drv->if_disabled = 1;
wpa_supplicant_event(drv->ctx,
EVENT_INTERFACE_DISABLED, NULL);
/*
* Try to get drv again, since it may be removed as
* part of the EVENT_INTERFACE_DISABLED handling for
* dynamic interfaces
*/
drv = nl80211_find_drv(global, ifi->ifi_index,
buf, len);
if (!drv)
return;
}
}
if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
if (if_indextoname(ifi->ifi_index, namebuf) &&
linux_iface_up(drv->global->ioctl_sock,
drv->first_bss->ifname) == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
"event since interface %s is down",
namebuf);
} else if (if_nametoindex(drv->first_bss->ifname) == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
"event since interface %s does not exist",
drv->first_bss->ifname);
} else if (drv->if_removed) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
"event since interface %s is marked "
"removed", drv->first_bss->ifname);
} else {
struct i802_bss *bss;
u8 addr[ETH_ALEN];
/* Re-read MAC address as it may have changed */
bss = get_bss_ifindex(drv, ifi->ifi_index);
if (bss &&
linux_get_ifhwaddr(drv->global->ioctl_sock,
bss->ifname, addr) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: %s: failed to re-read MAC address",
bss->ifname);
} else if (bss &&
os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Own MAC address on ifindex %d (%s) changed from "
MACSTR " to " MACSTR,
ifi->ifi_index, bss->ifname,
MAC2STR(bss->addr),
MAC2STR(addr));
os_memcpy(bss->addr, addr, ETH_ALEN);
}
wpa_printf(MSG_DEBUG, "nl80211: Interface up");
drv->if_disabled = 0;
wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
NULL);
}
}
/*
* Some drivers send the association event before the operup event--in
* this case, lifting operstate in wpa_driver_nl80211_set_operstate()
* fails. This will hit us when wpa_supplicant does not need to do
* IEEE 802.1X authentication
*/
if (drv->operstate == 1 &&
(ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
!(ifi->ifi_flags & IFF_RUNNING)) {
wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
-1, IF_OPER_UP);
}
if (ifname[0])
wpa_driver_nl80211_event_newlink(drv, ifname);
if (ifi->ifi_family == AF_BRIDGE && brid) {
struct i802_bss *bss;
/* device has been added to bridge */
if_indextoname(brid, namebuf);
wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
brid, namebuf);
add_ifidx(drv, brid);
for (bss = drv->first_bss; bss; bss = bss->next) {
if (os_strcmp(ifname, bss->ifname) == 0) {
os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
break;
}
}
}
}
static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
struct ifinfomsg *ifi,
u8 *buf, size_t len)
{
struct nl80211_global *global = ctx;
struct wpa_driver_nl80211_data *drv;
int attrlen;
struct rtattr *attr;
u32 brid = 0;
char ifname[IFNAMSIZ + 1];
char extra[100], *pos, *end;
drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
if (!drv) {
wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
ifi->ifi_index);
return;
}
extra[0] = '\0';
pos = extra;
end = pos + sizeof(extra);
ifname[0] = '\0';
attrlen = len;
attr = (struct rtattr *) buf;
while (RTA_OK(attr, attrlen)) {
switch (attr->rta_type) {
case IFLA_IFNAME:
if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
break;
os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
ifname[RTA_PAYLOAD(attr)] = '\0';
break;
case IFLA_MASTER:
brid = nla_get_u32((struct nlattr *) attr);
pos += os_snprintf(pos, end - pos, " master=%u", brid);
break;
case IFLA_OPERSTATE:
pos += os_snprintf(pos, end - pos, " operstate=%u",
nla_get_u32((struct nlattr *) attr));
break;
case IFLA_LINKMODE:
pos += os_snprintf(pos, end - pos, " linkmode=%u",
nla_get_u32((struct nlattr *) attr));
break;
}
attr = RTA_NEXT(attr, attrlen);
}
extra[sizeof(extra) - 1] = '\0';
wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
ifi->ifi_index, ifname, extra, ifi->ifi_family,
ifi->ifi_flags,
(ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
(ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
(ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
(ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
wpa_driver_nl80211_event_dellink(drv, ifname);
if (ifi->ifi_family == AF_BRIDGE && brid) {
/* device has been removed from bridge */
char namebuf[IFNAMSIZ];
if_indextoname(brid, namebuf);
wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
"%s", brid, namebuf);
del_ifidx(drv, brid);
}
}
unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
{
struct nl_msg *msg;
int ret;
struct nl80211_bss_info_arg arg;
msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
os_memset(&arg, 0, sizeof(arg));
arg.drv = drv;
ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
if (ret == 0) {
unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
arg.ibss_freq : arg.assoc_freq;
wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
"associated BSS from scan results: %u MHz", freq);
if (freq)
drv->assoc_freq = freq;
return drv->assoc_freq;
}
wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
"(%s)", ret, strerror(-ret));
return drv->assoc_freq;
}
static int get_link_signal(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
[NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
};
struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
};
struct wpa_signal_info *sig_change = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb[NL80211_ATTR_STA_INFO] ||
nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
tb[NL80211_ATTR_STA_INFO], policy))
return NL_SKIP;
if (!sinfo[NL80211_STA_INFO_SIGNAL])
return NL_SKIP;
sig_change->current_signal =
(s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
sig_change->avg_signal =
(s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
else
sig_change->avg_signal = 0;
if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
sinfo[NL80211_STA_INFO_TX_BITRATE],
rate_policy)) {
sig_change->current_txrate = 0;
} else {
if (rinfo[NL80211_RATE_INFO_BITRATE]) {
sig_change->current_txrate =
nla_get_u16(rinfo[
NL80211_RATE_INFO_BITRATE]) * 100;
}
}
}
return NL_SKIP;
}
int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
struct wpa_signal_info *sig)
{
struct nl_msg *msg;
sig->current_signal = -9999;
sig->current_txrate = 0;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
nlmsg_free(msg);
return -ENOBUFS;
}
return send_and_recv_msgs(drv, msg, get_link_signal, sig);
}
static int get_link_noise(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
[NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
[NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
};
struct wpa_signal_info *sig_change = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb[NL80211_ATTR_SURVEY_INFO]) {
wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
return NL_SKIP;
}
if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
tb[NL80211_ATTR_SURVEY_INFO],
survey_policy)) {
wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
"attributes!");
return NL_SKIP;
}
if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
return NL_SKIP;
if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
sig_change->frequency)
return NL_SKIP;
if (!sinfo[NL80211_SURVEY_INFO_NOISE])
return NL_SKIP;
sig_change->current_noise =
(s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
return NL_SKIP;
}
int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
struct wpa_signal_info *sig_change)
{
struct nl_msg *msg;
sig_change->current_noise = 9999;
sig_change->frequency = drv->assoc_freq;
msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
}
static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
void *handle)
{
struct nl_cb *cb = eloop_ctx;
int res;
wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
res = nl_recvmsgs(handle, cb);
if (res < 0) {
wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
}
}
/**
* wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
* @priv: driver_nl80211 private data
* @alpha2_arg: country to which to switch to
* Returns: 0 on success, -1 on failure
*
* This asks nl80211 to set the regulatory domain for given
* country ISO / IEC alpha2.
*/
static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
char alpha2[3];
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
alpha2[0] = alpha2_arg[0];
alpha2[1] = alpha2_arg[1];
alpha2[2] = '\0';
if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
nlmsg_free(msg);
return -EINVAL;
}
if (send_and_recv_msgs(drv, msg, NULL, NULL))
return -EINVAL;
return 0;
}
static int nl80211_get_country(struct nl_msg *msg, void *arg)
{
char *alpha2 = arg;
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
wpa_printf(MSG_DEBUG, "nl80211: No country information available");
return NL_SKIP;
}
os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
return NL_SKIP;
}
static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
alpha2[0] = '\0';
ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
if (!alpha2[0])
ret = -1;
return ret;
}
static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
{
int ret;
global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
if (global->nl_cb == NULL) {
wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
"callbacks");
return -1;
}
global->nl = nl_create_handle(global->nl_cb, "nl");
if (global->nl == NULL)
goto err;
global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
if (global->nl80211_id < 0) {
wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
"found");
goto err;
}
global->nl_event = nl_create_handle(global->nl_cb, "event");
if (global->nl_event == NULL)
goto err;
ret = nl_get_multicast_id(global, "nl80211", "scan");
if (ret >= 0)
ret = nl_socket_add_membership(global->nl_event, ret);
if (ret < 0) {
wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
"membership for scan events: %d (%s)",
ret, strerror(-ret));
goto err;
}
ret = nl_get_multicast_id(global, "nl80211", "mlme");
if (ret >= 0)
ret = nl_socket_add_membership(global->nl_event, ret);
if (ret < 0) {
wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
"membership for mlme events: %d (%s)",
ret, strerror(-ret));
goto err;
}
ret = nl_get_multicast_id(global, "nl80211", "regulatory");
if (ret >= 0)
ret = nl_socket_add_membership(global->nl_event, ret);
if (ret < 0) {
wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
"membership for regulatory events: %d (%s)",
ret, strerror(-ret));
/* Continue without regulatory events */
}
ret = nl_get_multicast_id(global, "nl80211", "vendor");
if (ret >= 0)
ret = nl_socket_add_membership(global->nl_event, ret);
if (ret < 0) {
wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
"membership for vendor events: %d (%s)",
ret, strerror(-ret));
/* Continue without vendor events */
}
nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
no_seq_check, NULL);
nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
process_global_event, global);
nl80211_register_eloop_read(&global->nl_event,
wpa_driver_nl80211_event_receive,
global->nl_cb);
return 0;
err:
nl_destroy_handles(&global->nl_event);
nl_destroy_handles(&global->nl);
nl_cb_put(global->nl_cb);
global->nl_cb = NULL;
return -1;
}
static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
{
drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!drv->nl_cb) {
wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
return -1;
}
nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
no_seq_check, NULL);
nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
process_drv_event, drv);
return 0;
}
static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
{
wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
/*
* This may be for any interface; use ifdown event to disable
* interface.
*/
}
static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
{
struct wpa_driver_nl80211_data *drv = ctx;
wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
if (i802_set_iface_flags(drv->first_bss, 1)) {
wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
"after rfkill unblock");
return;
}
/* rtnetlink ifup handler will report interface as enabled */
}
static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
void *eloop_ctx,
void *handle)
{
struct wpa_driver_nl80211_data *drv = eloop_ctx;
u8 data[2048];
struct msghdr msg;
struct iovec entry;
u8 control[512];
struct cmsghdr *cmsg;
int res, found_ee = 0, found_wifi = 0, acked = 0;
union wpa_event_data event;
memset(&msg, 0, sizeof(msg));
msg.msg_iov = &entry;
msg.msg_iovlen = 1;
entry.iov_base = data;
entry.iov_len = sizeof(data);
msg.msg_control = &control;
msg.msg_controllen = sizeof(control);
res = recvmsg(sock, &msg, MSG_ERRQUEUE);
/* if error or not fitting 802.3 header, return */
if (res < 14)
return;
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
{
if (cmsg->cmsg_level == SOL_SOCKET &&
cmsg->cmsg_type == SCM_WIFI_STATUS) {
int *ack;
found_wifi = 1;
ack = (void *)CMSG_DATA(cmsg);
acked = *ack;
}
if (cmsg->cmsg_level == SOL_PACKET &&
cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
struct sock_extended_err *err =
(struct sock_extended_err *)CMSG_DATA(cmsg);
if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
found_ee = 1;
}
}
if (!found_ee || !found_wifi)
return;
memset(&event, 0, sizeof(event));
event.eapol_tx_status.dst = data;
event.eapol_tx_status.data = data + 14;
event.eapol_tx_status.data_len = res - 14;
event.eapol_tx_status.ack = acked;
wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
}
static int nl80211_init_bss(struct i802_bss *bss)
{
bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!bss->nl_cb)
return -1;
nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
no_seq_check, NULL);
nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
process_bss_event, bss);
return 0;
}
static void nl80211_destroy_bss(struct i802_bss *bss)
{
nl_cb_put(bss->nl_cb);
bss->nl_cb = NULL;
}
static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
void *global_priv, int hostapd,
const u8 *set_addr,
const char *driver_params)
{
struct wpa_driver_nl80211_data *drv;
struct rfkill_config *rcfg;
struct i802_bss *bss;
if (global_priv == NULL)
return NULL;
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
return NULL;
drv->global = global_priv;
drv->ctx = ctx;
drv->hostapd = !!hostapd;
drv->eapol_sock = -1;
drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
drv->if_indices = drv->default_if_indices;
drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
if (!drv->first_bss) {
os_free(drv);
return NULL;
}
bss = drv->first_bss;
bss->drv = drv;
bss->ctx = ctx;
os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
drv->monitor_ifidx = -1;
drv->monitor_sock = -1;
drv->eapol_tx_sock = -1;
drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
if (wpa_driver_nl80211_init_nl(drv)) {
os_free(drv);
return NULL;
}
if (nl80211_init_bss(bss))
goto failed;
rcfg = os_zalloc(sizeof(*rcfg));
if (rcfg == NULL)
goto failed;
rcfg->ctx = drv;
os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
drv->rfkill = rfkill_init(rcfg);
if (drv->rfkill == NULL) {
wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
os_free(rcfg);
}
if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
drv->start_iface_up = 1;
if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
goto failed;
drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
if (drv->eapol_tx_sock < 0)
goto failed;
if (drv->data_tx_status) {
int enabled = 1;
if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
&enabled, sizeof(enabled)) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: wifi status sockopt failed\n");
drv->data_tx_status = 0;
if (!drv->use_monitor)
drv->capa.flags &=
~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
} else {
eloop_register_read_sock(drv->eapol_tx_sock,
wpa_driver_nl80211_handle_eapol_tx_status,
drv, NULL);
}
}
if (drv->global) {
dl_list_add(&drv->global->interfaces, &drv->list);
drv->in_interface_list = 1;
}
return bss;
failed:
wpa_driver_nl80211_deinit(bss);
return NULL;
}
/**
* wpa_driver_nl80211_init - Initialize nl80211 driver interface
* @ctx: context to be used when calling wpa_supplicant functions,
* e.g., wpa_supplicant_event()
* @ifname: interface name, e.g., wlan0
* @global_priv: private driver global data from global_init()
* Returns: Pointer to private data, %NULL on failure
*/
static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
void *global_priv)
{
return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
NULL);
}
static int nl80211_register_frame(struct i802_bss *bss,
struct nl_handle *nl_handle,
u16 type, const u8 *match, size_t match_len)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
char buf[30];
buf[0] = '\0';
wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
type, fc2str(type), nl_handle, buf);
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
"failed (type=%u): ret=%d (%s)",
type, ret, strerror(-ret));
wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
match, match_len);
}
return ret;
}
static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
if (bss->nl_mgmt) {
wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
"already on! (nl_mgmt=%p)", bss->nl_mgmt);
return -1;
}
bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
if (bss->nl_mgmt == NULL)
return -1;
return 0;
}
static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
{
nl80211_register_eloop_read(&bss->nl_mgmt,
wpa_driver_nl80211_event_receive,
bss->nl_cb);
}
static int nl80211_register_action_frame(struct i802_bss *bss,
const u8 *match, size_t match_len)
{
u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
return nl80211_register_frame(bss, bss->nl_mgmt,
type, match, match_len);
}
static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret = 0;
if (nl80211_alloc_mgmt_handle(bss))
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
"handle %p", bss->nl_mgmt);
if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
/* register for any AUTH message */
nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
}
#ifdef CONFIG_INTERWORKING
/* QoS Map Configure */
if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
ret = -1;
#endif /* CONFIG_INTERWORKING */
#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
/* GAS Initial Request */
if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
ret = -1;
/* GAS Initial Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
ret = -1;
/* GAS Comeback Request */
if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
ret = -1;
/* GAS Comeback Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
ret = -1;
/* Protected GAS Initial Request */
if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
ret = -1;
/* Protected GAS Initial Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
ret = -1;
/* Protected GAS Comeback Request */
if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
ret = -1;
/* Protected GAS Comeback Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
ret = -1;
#endif /* CONFIG_P2P || CONFIG_INTERWORKING */
#ifdef CONFIG_P2P
/* P2P Public Action */
if (nl80211_register_action_frame(bss,
(u8 *) "\x04\x09\x50\x6f\x9a\x09",
6) < 0)
ret = -1;
/* P2P Action */
if (nl80211_register_action_frame(bss,
(u8 *) "\x7f\x50\x6f\x9a\x09",
5) < 0)
ret = -1;
#endif /* CONFIG_P2P */
#ifdef CONFIG_IEEE80211W
/* SA Query Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
ret = -1;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_TDLS
if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
/* TDLS Discovery Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
0)
ret = -1;
}
#endif /* CONFIG_TDLS */
/* FT Action frames */
if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
ret = -1;
else
drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
/* WNM - BSS Transition Management Request */
if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
ret = -1;
/* WNM-Sleep Mode Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
ret = -1;
#ifdef CONFIG_HS20
/* WNM-Notification */
if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
ret = -1;
#endif /* CONFIG_HS20 */
/* WMM-AC ADDTS Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
return -1;
/* WMM-AC DELTS */
if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
return -1;
/* Radio Measurement - Neighbor Report Response */
if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
ret = -1;
/* Radio Measurement - Link Measurement Request */
if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
(nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
ret = -1;
nl80211_mgmt_handle_register_eloop(bss);
return ret;
}
static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
{
int ret = 0;
if (nl80211_alloc_mgmt_handle(bss))
return -1;
wpa_printf(MSG_DEBUG,
"nl80211: Subscribe to mgmt frames with mesh handle %p",
bss->nl_mgmt);
/* Auth frames for mesh SAE */
if (nl80211_register_frame(bss, bss->nl_mgmt,
(WLAN_FC_TYPE_MGMT << 2) |
(WLAN_FC_STYPE_AUTH << 4),
NULL, 0) < 0)
ret = -1;
/* Mesh peering open */
if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
ret = -1;
/* Mesh peering confirm */
if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
ret = -1;
/* Mesh peering close */
if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
ret = -1;
nl80211_mgmt_handle_register_eloop(bss);
return ret;
}
static int nl80211_register_spurious_class3(struct i802_bss *bss)
{
struct nl_msg *msg;
int ret;
msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
"failed: ret=%d (%s)",
ret, strerror(-ret));
}
return ret;
}
static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
{
static const int stypes[] = {
WLAN_FC_STYPE_AUTH,
WLAN_FC_STYPE_ASSOC_REQ,
WLAN_FC_STYPE_REASSOC_REQ,
WLAN_FC_STYPE_DISASSOC,
WLAN_FC_STYPE_DEAUTH,
WLAN_FC_STYPE_ACTION,
WLAN_FC_STYPE_PROBE_REQ,
/* Beacon doesn't work as mac80211 doesn't currently allow
* it, but it wouldn't really be the right thing anyway as
* it isn't per interface ... maybe just dump the scan
* results periodically for OLBC?
*/
/* WLAN_FC_STYPE_BEACON, */
};
unsigned int i;
if (nl80211_alloc_mgmt_handle(bss))
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
"handle %p", bss->nl_mgmt);
for (i = 0; i < ARRAY_SIZE(stypes); i++) {
if (nl80211_register_frame(bss, bss->nl_mgmt,
(WLAN_FC_TYPE_MGMT << 2) |
(stypes[i] << 4),
NULL, 0) < 0) {
goto out_err;
}
}
if (nl80211_register_spurious_class3(bss))
goto out_err;
if (nl80211_get_wiphy_data_ap(bss) == NULL)
goto out_err;
nl80211_mgmt_handle_register_eloop(bss);
return 0;
out_err:
nl_destroy_handles(&bss->nl_mgmt);
return -1;
}
static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
{
if (nl80211_alloc_mgmt_handle(bss))
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
"handle %p (device SME)", bss->nl_mgmt);
if (nl80211_register_frame(bss, bss->nl_mgmt,
(WLAN_FC_TYPE_MGMT << 2) |
(WLAN_FC_STYPE_ACTION << 4),
NULL, 0) < 0)
goto out_err;
nl80211_mgmt_handle_register_eloop(bss);
return 0;
out_err:
nl_destroy_handles(&bss->nl_mgmt);
return -1;
}
static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
{
if (bss->nl_mgmt == NULL)
return;
wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
"(%s)", bss->nl_mgmt, reason);
nl80211_destroy_eloop_handle(&bss->nl_mgmt);
nl80211_put_wiphy_data_ap(bss);
}
static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
{
wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
}
static void nl80211_del_p2pdev(struct i802_bss *bss)
{
struct nl_msg *msg;
int ret;
msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
bss->ifname, (long long unsigned int) bss->wdev_id,
strerror(-ret));
}
static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
{
struct nl_msg *msg;
int ret;
msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
NL80211_CMD_STOP_P2P_DEVICE);
ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
start ? "Start" : "Stop",
bss->ifname, (long long unsigned int) bss->wdev_id,
strerror(-ret));
return ret;
}
static int i802_set_iface_flags(struct i802_bss *bss, int up)
{
enum nl80211_iftype nlmode;
nlmode = nl80211_get_ifmode(bss);
if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
return linux_set_iface_flags(bss->drv->global->ioctl_sock,
bss->ifname, up);
}
/* P2P Device has start/stop which is equivalent */
return nl80211_set_p2pdev(bss, up);
}
static int
wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
const u8 *set_addr, int first,
const char *driver_params)
{
struct i802_bss *bss = drv->first_bss;
int send_rfkill_event = 0;
enum nl80211_iftype nlmode;
drv->ifindex = if_nametoindex(bss->ifname);
bss->ifindex = drv->ifindex;
bss->wdev_id = drv->global->if_add_wdevid;
bss->wdev_id_set = drv->global->if_add_wdevid_set;
bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
drv->global->if_add_wdevid_set = 0;
if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
bss->static_ap = 1;
if (wpa_driver_nl80211_capa(drv))
return -1;
if (driver_params && nl80211_set_param(bss, driver_params) < 0)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
bss->ifname, drv->phyname);
if (set_addr &&
(linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
set_addr)))
return -1;
if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
drv->start_mode_ap = 1;
if (drv->hostapd || bss->static_ap)
nlmode = NL80211_IFTYPE_AP;
else if (bss->if_dynamic)
nlmode = nl80211_get_ifmode(bss);
else
nlmode = NL80211_IFTYPE_STATION;
if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
return -1;
}
if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
nl80211_get_macaddr(bss);
if (!rfkill_is_blocked(drv->rfkill)) {
int ret = i802_set_iface_flags(bss, 1);
if (ret) {
wpa_printf(MSG_ERROR, "nl80211: Could not set "
"interface '%s' UP", bss->ifname);
return ret;
}
if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
return ret;
} else {
wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
"interface '%s' due to rfkill", bss->ifname);
if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
return 0;
drv->if_disabled = 1;
send_rfkill_event = 1;
}
if (!drv->hostapd)
netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1, IF_OPER_DORMANT);
if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
bss->addr))
return -1;
os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
if (send_rfkill_event) {
eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
drv, drv->ctx);
}
return 0;
}
static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
{
struct nl_msg *msg;
wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
return send_and_recv_msgs(drv, msg, NULL, NULL);
}
/**
* wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
* @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
*
* Shut down driver interface and processing of driver events. Free
* private data buffer if one was allocated in wpa_driver_nl80211_init().
*/
static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
bss->ifname, drv->disabled_11b_rates);
bss->in_deinit = 1;
if (drv->data_tx_status)
eloop_unregister_read_sock(drv->eapol_tx_sock);
if (drv->eapol_tx_sock >= 0)
close(drv->eapol_tx_sock);
if (bss->nl_preq)
wpa_driver_nl80211_probe_req_report(bss, 0);
if (bss->added_if_into_bridge) {
if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
bss->ifname) < 0)
wpa_printf(MSG_INFO, "nl80211: Failed to remove "
"interface %s from bridge %s: %s",
bss->ifname, bss->brname, strerror(errno));
if (drv->rtnl_sk)
nl80211_handle_destroy(drv->rtnl_sk);
}
if (bss->added_bridge) {
linux_set_iface_flags(drv->global->ioctl_sock, bss->brname, 0);
if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
wpa_printf(MSG_INFO, "nl80211: Failed to remove "
"bridge %s: %s",
bss->brname, strerror(errno));
}
nl80211_remove_monitor_interface(drv);
if (is_ap_interface(drv->nlmode))
wpa_driver_nl80211_del_beacon(drv);
if (drv->eapol_sock >= 0) {
eloop_unregister_read_sock(drv->eapol_sock);
close(drv->eapol_sock);
}
if (drv->if_indices != drv->default_if_indices)
os_free(drv->if_indices);
if (drv->disabled_11b_rates)
nl80211_disable_11b_rates(drv, drv->ifindex, 0);
netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
IF_OPER_UP);
eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
rfkill_deinit(drv->rfkill);
eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
if (!drv->start_iface_up)
(void) i802_set_iface_flags(bss, 0);
if (drv->addr_changed) {
if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
0) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Could not set interface down to restore permanent MAC address");
}
if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
drv->perm_addr) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Could not restore permanent MAC address");
}
}
if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
if (!drv->hostapd || !drv->start_mode_ap)
wpa_driver_nl80211_set_mode(bss,
NL80211_IFTYPE_STATION);
nl80211_mgmt_unsubscribe(bss, "deinit");
} else {
nl80211_mgmt_unsubscribe(bss, "deinit");
nl80211_del_p2pdev(bss);
}
nl_cb_put(drv->nl_cb);
nl80211_destroy_bss(drv->first_bss);
os_free(drv->filter_ssids);
os_free(drv->auth_ie);
if (drv->in_interface_list)
dl_list_del(&drv->list);
os_free(drv->extended_capa);
os_free(drv->extended_capa_mask);
os_free(drv->first_bss);
os_free(drv);
}
static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
{
switch (alg) {
case WPA_ALG_WEP:
if (key_len == 5)
return WLAN_CIPHER_SUITE_WEP40;
return WLAN_CIPHER_SUITE_WEP104;
case WPA_ALG_TKIP:
return WLAN_CIPHER_SUITE_TKIP;
case WPA_ALG_CCMP:
return WLAN_CIPHER_SUITE_CCMP;
case WPA_ALG_GCMP:
return WLAN_CIPHER_SUITE_GCMP;
case WPA_ALG_CCMP_256:
return WLAN_CIPHER_SUITE_CCMP_256;
case WPA_ALG_GCMP_256:
return WLAN_CIPHER_SUITE_GCMP_256;
case WPA_ALG_IGTK:
return WLAN_CIPHER_SUITE_AES_CMAC;
case WPA_ALG_BIP_GMAC_128:
return WLAN_CIPHER_SUITE_BIP_GMAC_128;
case WPA_ALG_BIP_GMAC_256:
return WLAN_CIPHER_SUITE_BIP_GMAC_256;
case WPA_ALG_BIP_CMAC_256:
return WLAN_CIPHER_SUITE_BIP_CMAC_256;
case WPA_ALG_SMS4:
return WLAN_CIPHER_SUITE_SMS4;
case WPA_ALG_KRK:
return WLAN_CIPHER_SUITE_KRK;
case WPA_ALG_NONE:
case WPA_ALG_PMK:
wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
alg);
return 0;
}
wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
alg);
return 0;
}
static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
{
switch (cipher) {
case WPA_CIPHER_CCMP_256:
return WLAN_CIPHER_SUITE_CCMP_256;
case WPA_CIPHER_GCMP_256:
return WLAN_CIPHER_SUITE_GCMP_256;
case WPA_CIPHER_CCMP:
return WLAN_CIPHER_SUITE_CCMP;
case WPA_CIPHER_GCMP:
return WLAN_CIPHER_SUITE_GCMP;
case WPA_CIPHER_TKIP:
return WLAN_CIPHER_SUITE_TKIP;
case WPA_CIPHER_WEP104:
return WLAN_CIPHER_SUITE_WEP104;
case WPA_CIPHER_WEP40:
return WLAN_CIPHER_SUITE_WEP40;
case WPA_CIPHER_GTK_NOT_USED:
return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
}
return 0;
}
static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
int max_suites)
{
int num_suites = 0;
if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
return num_suites;
}
static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
const u8 *key, size_t key_len)
{
struct nl_msg *msg;
int ret;
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
return 0;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG,
"nl80211: Key management set key failed: ret=%d (%s)",
ret, strerror(-ret));
}
return ret;
}
static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
enum wpa_alg alg, const u8 *addr,
int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ifindex;
struct nl_msg *msg;
int ret;
int tdls = 0;
/* Ignore for P2P Device */
if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
return 0;
ifindex = if_nametoindex(ifname);
wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
"set_tx=%d seq_len=%lu key_len=%lu",
__func__, ifindex, ifname, alg, addr, key_idx, set_tx,
(unsigned long) seq_len, (unsigned long) key_len);
#ifdef CONFIG_TDLS
if (key_idx == -1) {
key_idx = 0;
tdls = 1;
}
#endif /* CONFIG_TDLS */
if (alg == WPA_ALG_PMK &&
(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
__func__);
ret = issue_key_mgmt_set_key(drv, key, key_len);
return ret;
}
if (alg == WPA_ALG_NONE) {
msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
if (!msg)
return -ENOBUFS;
} else {
msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
if (!msg ||
nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
wpa_alg_to_cipher_suite(alg, key_len)))
goto fail;
wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
}
if (seq && seq_len) {
if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
goto fail;
wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
}
if (addr && !is_broadcast_ether_addr(addr)) {
wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto fail;
if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
NL80211_KEYTYPE_GROUP))
goto fail;
}
} else if (addr && is_broadcast_ether_addr(addr)) {
struct nlattr *types;
wpa_printf(MSG_DEBUG, " broadcast key");
types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
if (!types ||
nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
goto fail;
nla_nest_end(msg, types);
}
if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
goto fail;
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
ret = 0;
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
ret, strerror(-ret));
/*
* If we failed or don't need to set the default TX key (below),
* we're done here.
*/
if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
return ret;
if (is_ap_interface(drv->nlmode) && addr &&
!is_broadcast_ether_addr(addr))
return ret;
msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
if (!msg ||
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
nla_put_flag(msg, alg == WPA_ALG_IGTK ?
NL80211_ATTR_KEY_DEFAULT_MGMT :
NL80211_ATTR_KEY_DEFAULT))
goto fail;
if (addr && is_broadcast_ether_addr(addr)) {
struct nlattr *types;
types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
if (!types ||
nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
goto fail;
nla_nest_end(msg, types);
} else if (addr) {
struct nlattr *types;
types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
if (!types ||
nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
goto fail;
nla_nest_end(msg, types);
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret == -ENOENT)
ret = 0;
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
"err=%d %s)", ret, strerror(-ret));
return ret;
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
int key_idx, int defkey,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
if (!key_attr)
return -1;
if (defkey && alg == WPA_ALG_IGTK) {
if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
return -1;
} else if (defkey) {
if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
return -1;
}
if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
nla_put_u32(msg, NL80211_KEY_CIPHER,
wpa_alg_to_cipher_suite(alg, key_len)) ||
(seq && seq_len &&
nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
nla_put(msg, NL80211_KEY_DATA, key_len, key))
return -1;
nla_nest_end(msg, key_attr);
return 0;
}
static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
struct nl_msg *msg)
{
int i, privacy = 0;
struct nlattr *nl_keys, *nl_key;
for (i = 0; i < 4; i++) {
if (!params->wep_key[i])
continue;
privacy = 1;
break;
}
if (params->wps == WPS_MODE_PRIVACY)
privacy = 1;
if (params->pairwise_suite &&
params->pairwise_suite != WPA_CIPHER_NONE)
privacy = 1;
if (!privacy)
return 0;
if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
return -ENOBUFS;
nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
if (!nl_keys)
return -ENOBUFS;
for (i = 0; i < 4; i++) {
if (!params->wep_key[i])
continue;
nl_key = nla_nest_start(msg, i);
if (!nl_key ||
nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
params->wep_key[i]) ||
nla_put_u32(msg, NL80211_KEY_CIPHER,
params->wep_key_len[i] == 5 ?
WLAN_CIPHER_SUITE_WEP40 :
WLAN_CIPHER_SUITE_WEP104) ||
nla_put_u8(msg, NL80211_KEY_IDX, i) ||
(i == params->wep_tx_keyidx &&
nla_put_flag(msg, NL80211_KEY_DEFAULT)))
return -ENOBUFS;
nla_nest_end(msg, nl_key);
}
nla_nest_end(msg, nl_keys);
return 0;
}
int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code,
int local_state_change)
{
int ret;
struct nl_msg *msg;
if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
(addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
(local_state_change &&
nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_dbg(drv->ctx, MSG_DEBUG,
"nl80211: MLME command failed: reason=%u ret=%d (%s)",
reason_code, ret, strerror(-ret));
}
return ret;
}
static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
int reason_code)
{
int ret;
wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
nl80211_mark_disconnected(drv);
/* Disconnect command doesn't need BSSID - it uses cached value */
ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
reason_code, 0);
/*
* For locally generated disconnect, supplicant already generates a
* DEAUTH event, so ignore the event from NL80211.
*/
drv->ignore_next_local_disconnect = ret == 0;
return ret;
}
static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
const u8 *addr, int reason_code)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret;
if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
nl80211_mark_disconnected(drv);
return nl80211_leave_ibss(drv, 1);
}
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
return wpa_driver_nl80211_disconnect(drv, reason_code);
wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
__func__, MAC2STR(addr), reason_code);
nl80211_mark_disconnected(drv);
ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
reason_code, 0);
/*
* For locally generated deauthenticate, supplicant already generates a
* DEAUTH event, so ignore the event from NL80211.
*/
drv->ignore_next_local_deauth = ret == 0;
return ret;
}
static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
struct wpa_driver_auth_params *params)
{
int i;
drv->auth_freq = params->freq;
drv->auth_alg = params->auth_alg;
drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
drv->auth_local_state_change = params->local_state_change;
drv->auth_p2p = params->p2p;
if (params->bssid)
os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
else
os_memset(drv->auth_bssid_, 0, ETH_ALEN);
if (params->ssid) {
os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
drv->auth_ssid_len = params->ssid_len;
} else
drv->auth_ssid_len = 0;
os_free(drv->auth_ie);
drv->auth_ie = NULL;
drv->auth_ie_len = 0;
if (params->ie) {
drv->auth_ie = os_malloc(params->ie_len);
if (drv->auth_ie) {
os_memcpy(drv->auth_ie, params->ie, params->ie_len);
drv->auth_ie_len = params->ie_len;
}
}
for (i = 0; i < 4; i++) {
if (params->wep_key[i] && params->wep_key_len[i] &&
params->wep_key_len[i] <= 16) {
os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
params->wep_key_len[i]);
drv->auth_wep_key_len[i] = params->wep_key_len[i];
} else
drv->auth_wep_key_len[i] = 0;
}
}
static void nl80211_unmask_11b_rates(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
return;
/*
* Looks like we failed to unmask 11b rates previously. This could
* happen, e.g., if the interface was down at the point in time when a
* P2P group was terminated.
*/
wpa_printf(MSG_DEBUG,
"nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
bss->ifname);
nl80211_disable_11b_rates(drv, drv->ifindex, 0);
}
static int wpa_driver_nl80211_authenticate(
struct i802_bss *bss, struct wpa_driver_auth_params *params)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret = -1, i;
struct nl_msg *msg;
enum nl80211_auth_type type;
enum nl80211_iftype nlmode;
int count = 0;
int is_retry;
nl80211_unmask_11b_rates(bss);
is_retry = drv->retry_auth;
drv->retry_auth = 0;
drv->ignore_deauth_event = 0;
nl80211_mark_disconnected(drv);
os_memset(drv->auth_bssid, 0, ETH_ALEN);
if (params->bssid)
os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
else
os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
/* FIX: IBSS mode */
nlmode = params->p2p ?
NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
if (drv->nlmode != nlmode &&
wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
return -1;
retry:
wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
if (!msg)
goto fail;
for (i = 0; i < 4; i++) {
if (!params->wep_key[i])
continue;
wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
NULL, i,
i == params->wep_tx_keyidx, NULL, 0,
params->wep_key[i],
params->wep_key_len[i]);
if (params->wep_tx_keyidx != i)
continue;
if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
params->wep_key[i], params->wep_key_len[i]))
goto fail;
}
if (params->bssid) {
wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
MAC2STR(params->bssid));
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
goto fail;
}
if (params->freq) {
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
goto fail;
}
if (params->ssid) {
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->ssid, params->ssid_len);
if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
params->ssid))
goto fail;
}
wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
if (params->ie &&
nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
goto fail;
if (params->sae_data) {
wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data,
params->sae_data_len);
if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
params->sae_data))
goto fail;
}
if (params->auth_alg & WPA_AUTH_ALG_OPEN)
type = NL80211_AUTHTYPE_OPEN_SYSTEM;
else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
type = NL80211_AUTHTYPE_SHARED_KEY;
else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
type = NL80211_AUTHTYPE_NETWORK_EAP;
else if (params->auth_alg & WPA_AUTH_ALG_FT)
type = NL80211_AUTHTYPE_FT;
else if (params->auth_alg & WPA_AUTH_ALG_SAE)
type = NL80211_AUTHTYPE_SAE;
else
goto fail;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
goto fail;
if (params->local_state_change) {
wpa_printf(MSG_DEBUG, " * Local state change only");
if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
goto fail;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_dbg(drv->ctx, MSG_DEBUG,
"nl80211: MLME command failed (auth): ret=%d (%s)",
ret, strerror(-ret));
count++;
if (ret == -EALREADY && count == 1 && params->bssid &&
!params->local_state_change) {
/*
* mac80211 does not currently accept new
* authentication if we are already authenticated. As a
* workaround, force deauthentication and try again.
*/
wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
"after forced deauthentication");
drv->ignore_deauth_event = 1;
wpa_driver_nl80211_deauthenticate(
bss, params->bssid,
WLAN_REASON_PREV_AUTH_NOT_VALID);
nlmsg_free(msg);
goto retry;
}
if (ret == -ENOENT && params->freq && !is_retry) {
/*
* cfg80211 has likely expired the BSS entry even
* though it was previously available in our internal
* BSS table. To recover quickly, start a single
* channel scan on the specified channel.
*/
struct wpa_driver_scan_params scan;
int freqs[2];
os_memset(&scan, 0, sizeof(scan));
scan.num_ssids = 1;
if (params->ssid) {
scan.ssids[0].ssid = params->ssid;
scan.ssids[0].ssid_len = params->ssid_len;
}
freqs[0] = params->freq;
freqs[1] = 0;
scan.freqs = freqs;
wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
"channel scan to refresh cfg80211 BSS "
"entry");
ret = wpa_driver_nl80211_scan(bss, &scan);
if (ret == 0) {
nl80211_copy_auth_params(drv, params);
drv->scan_for_auth = 1;
}
} else if (is_retry) {
/*
* Need to indicate this with an event since the return
* value from the retry is not delivered to core code.
*/
union wpa_event_data event;
wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
"failed");
os_memset(&event, 0, sizeof(event));
os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
ETH_ALEN);
wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
&event);
}
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Authentication request send successfully");
}
fail:
nlmsg_free(msg);
return ret;
}
int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
{
struct wpa_driver_auth_params params;
struct i802_bss *bss = drv->first_bss;
int i;
wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
os_memset(&params, 0, sizeof(params));
params.freq = drv->auth_freq;
params.auth_alg = drv->auth_alg;
params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
params.local_state_change = drv->auth_local_state_change;
params.p2p = drv->auth_p2p;
if (!is_zero_ether_addr(drv->auth_bssid_))
params.bssid = drv->auth_bssid_;
if (drv->auth_ssid_len) {
params.ssid = drv->auth_ssid;
params.ssid_len = drv->auth_ssid_len;
}
params.ie = drv->auth_ie;
params.ie_len = drv->auth_ie_len;
for (i = 0; i < 4; i++) {
if (drv->auth_wep_key_len[i]) {
params.wep_key[i] = drv->auth_wep_key[i];
params.wep_key_len[i] = drv->auth_wep_key_len[i];
}
}
drv->retry_auth = 1;
return wpa_driver_nl80211_authenticate(bss, &params);
}
static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
const void *data, size_t len,
int encrypt, int noack,
unsigned int freq, int no_cck,
int offchanok, unsigned int wait_time)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
u64 cookie;
int res;
if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
freq = nl80211_get_assoc_freq(drv);
wpa_printf(MSG_DEBUG,
"nl80211: send_frame - Use assoc_freq=%u for IBSS",
freq);
}
if (freq == 0) {
wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
bss->freq);
freq = bss->freq;
}
if (drv->use_monitor) {
wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
freq, bss->freq);
return nl80211_send_monitor(drv, data, len, encrypt, noack);
}
wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
&cookie, no_cck, noack, offchanok);
if (res == 0 && !noack) {
const struct ieee80211_mgmt *mgmt;
u16 fc;
mgmt = (const struct ieee80211_mgmt *) data;
fc = le_to_host16(mgmt->frame_control);
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
wpa_printf(MSG_MSGDUMP,
"nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
(long long unsigned int)
drv->send_action_cookie,
(long long unsigned int) cookie);
drv->send_action_cookie = cookie;
}
}
return res;
}
static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
size_t data_len, int noack,
unsigned int freq, int no_cck,
int offchanok,
unsigned int wait_time)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct ieee80211_mgmt *mgmt;
int encrypt = 1;
u16 fc;
mgmt = (struct ieee80211_mgmt *) data;
fc = le_to_host16(mgmt->frame_control);
wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
" noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
fc, fc2str(fc), drv->nlmode);
if ((is_sta_interface(drv->nlmode) ||
drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
/*
* The use of last_mgmt_freq is a bit of a hack,
* but it works due to the single-threaded nature
* of wpa_supplicant.
*/
if (freq == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
drv->last_mgmt_freq);
freq = drv->last_mgmt_freq;
}
return nl80211_send_frame_cmd(bss, freq, 0,
data, data_len, NULL, 1, noack,
1);
}
if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
if (freq == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
bss->freq);
freq = bss->freq;
}
return nl80211_send_frame_cmd(bss, freq,
(int) freq == bss->freq ? 0 :
wait_time,
data, data_len,
&drv->send_action_cookie,
no_cck, noack, offchanok);
}
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
/*
* Only one of the authentication frame types is encrypted.
* In order for static WEP encryption to work properly (i.e.,
* to not encrypt the frame), we need to tell mac80211 about
* the frames that must not be encrypted.
*/
u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
encrypt = 0;
}
wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
noack, freq, no_cck, offchanok,
wait_time);
}
static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
int slot, int ht_opmode, int ap_isolate,
int *basic_rates)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
(cts >= 0 &&
nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
(preamble >= 0 &&
nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
(slot >= 0 &&
nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
(ht_opmode >= 0 &&
nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
(ap_isolate >= 0 &&
nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)))
goto fail;
if (basic_rates) {
u8 rates[NL80211_MAX_SUPP_RATES];
u8 rates_len = 0;
int i;
for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
i++)
rates[rates_len++] = basic_rates[i] / 5;
if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
rates))
goto fail;
}
return send_and_recv_msgs(drv, msg, NULL, NULL);
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int wpa_driver_nl80211_set_acl(void *priv,
struct hostapd_acl_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *acl;
unsigned int i;
int ret;
if (!(drv->capa.max_acl_mac_addrs))
return -ENOTSUP;
if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
return -ENOTSUP;
wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
(acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
nlmsg_free(msg);
return -ENOMEM;
}
for (i = 0; i < params->num_mac_acl; i++) {
if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
nlmsg_free(msg);
return -ENOMEM;
}
}
nla_nest_end(msg, acl);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
ret, strerror(-ret));
}
return ret;
}
static int wpa_driver_nl80211_set_ap(void *priv,
struct wpa_driver_ap_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
u8 cmd = NL80211_CMD_NEW_BEACON;
int ret;
int beacon_set;
int num_suites;
int smps_mode;
u32 suites[10], suite;
u32 ver;
beacon_set = bss->beacon_set;
wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
beacon_set);
if (beacon_set)
cmd = NL80211_CMD_SET_BEACON;
wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
params->head, params->head_len);
wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
params->tail, params->tail_len);
wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
params->ssid, params->ssid_len);
if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
params->head) ||
nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
params->tail) ||
nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
params->beacon_int) ||
nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
goto fail;
if (params->proberesp && params->proberesp_len) {
wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
params->proberesp, params->proberesp_len);
if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
params->proberesp))
goto fail;
}
switch (params->hide_ssid) {
case NO_SSID_HIDING:
wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
NL80211_HIDDEN_SSID_NOT_IN_USE))
goto fail;
break;
case HIDDEN_SSID_ZERO_LEN:
wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
NL80211_HIDDEN_SSID_ZERO_LEN))
goto fail;
break;
case HIDDEN_SSID_ZERO_CONTENTS:
wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
NL80211_HIDDEN_SSID_ZERO_CONTENTS))
goto fail;
break;
}
wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
if (params->privacy &&
nla_put_flag(msg, NL80211_ATTR_PRIVACY))
goto fail;
wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
(WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
/* Leave out the attribute */
} else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
NL80211_AUTHTYPE_SHARED_KEY))
goto fail;
} else {
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
NL80211_AUTHTYPE_OPEN_SYSTEM))
goto fail;
}
wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
ver = 0;
if (params->wpa_version & WPA_PROTO_WPA)
ver |= NL80211_WPA_VERSION_1;
if (params->wpa_version & WPA_PROTO_RSN)
ver |= NL80211_WPA_VERSION_2;
if (ver &&
nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
goto fail;
wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
params->key_mgmt_suites);
num_suites = 0;
if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
suites[num_suites++] = WLAN_AKM_SUITE_8021X;
if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
suites[num_suites++] = WLAN_AKM_SUITE_PSK;
if (num_suites &&
nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
suites))
goto fail;
if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
goto fail;
wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
params->pairwise_ciphers);
num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
suites, ARRAY_SIZE(suites));
if (num_suites &&
nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
num_suites * sizeof(u32), suites))
goto fail;
wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
params->group_cipher);
suite = wpa_cipher_to_cipher_suite(params->group_cipher);
if (suite &&
nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
goto fail;
switch (params->smps_mode) {
case HT_CAP_INFO_SMPS_DYNAMIC:
wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
smps_mode = NL80211_SMPS_DYNAMIC;
break;
case HT_CAP_INFO_SMPS_STATIC:
wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
smps_mode = NL80211_SMPS_STATIC;
break;
default:
/* invalid - fallback to smps off */
case HT_CAP_INFO_SMPS_DISABLED:
wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
smps_mode = NL80211_SMPS_OFF;
break;
}
if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
goto fail;
if (params->beacon_ies) {
wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
params->beacon_ies);
if (nla_put(msg, NL80211_ATTR_IE,
wpabuf_len(params->beacon_ies),
wpabuf_head(params->beacon_ies)))
goto fail;
}
if (params->proberesp_ies) {
wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
params->proberesp_ies);
if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
wpabuf_len(params->proberesp_ies),
wpabuf_head(params->proberesp_ies)))
goto fail;
}
if (params->assocresp_ies) {
wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
params->assocresp_ies);
if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
wpabuf_len(params->assocresp_ies),
wpabuf_head(params->assocresp_ies)))
goto fail;
}
if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) {
wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
params->ap_max_inactivity);
if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
params->ap_max_inactivity))
goto fail;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
ret, strerror(-ret));
} else {
bss->beacon_set = 1;
nl80211_set_bss(bss, params->cts_protect, params->preamble,
params->short_slot_time, params->ht_opmode,
params->isolate, params->basic_rates);
if (beacon_set && params->freq &&
params->freq->bandwidth != bss->bandwidth) {
wpa_printf(MSG_DEBUG,
"nl80211: Update BSS %s bandwidth: %d -> %d",
bss->ifname, bss->bandwidth,
params->freq->bandwidth);
ret = nl80211_set_channel(bss, params->freq, 1);
if (ret) {
wpa_printf(MSG_DEBUG,
"nl80211: Frequency set failed: %d (%s)",
ret, strerror(-ret));
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Frequency set succeeded for ht2040 coex");
bss->bandwidth = params->freq->bandwidth;
}
} else if (!beacon_set) {
/*
* cfg80211 updates the driver on frequence change in AP
* mode only at the point when beaconing is started, so
* set the initial value here.
*/
bss->bandwidth = params->freq->bandwidth;
}
}
return ret;
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_put_freq_params(struct nl_msg *msg,
struct hostapd_freq_params *freq)
{
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
return -ENOBUFS;
if (freq->vht_enabled) {
enum nl80211_chan_width cw;
switch (freq->bandwidth) {
case 20:
cw = NL80211_CHAN_WIDTH_20;
break;
case 40:
cw = NL80211_CHAN_WIDTH_40;
break;
case 80:
if (freq->center_freq2)
cw = NL80211_CHAN_WIDTH_80P80;
else
cw = NL80211_CHAN_WIDTH_80;
break;
case 160:
cw = NL80211_CHAN_WIDTH_160;
break;
default:
return -EINVAL;
}
if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
freq->center_freq1) ||
(freq->center_freq2 &&
nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
freq->center_freq2)))
return -ENOBUFS;
} else if (freq->ht_enabled) {
enum nl80211_channel_type ct;
switch (freq->sec_channel_offset) {
case -1:
ct = NL80211_CHAN_HT40MINUS;
break;
case 1:
ct = NL80211_CHAN_HT40PLUS;
break;
default:
ct = NL80211_CHAN_HT20;
break;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
return -ENOBUFS;
}
return 0;
}
static int nl80211_set_channel(struct i802_bss *bss,
struct hostapd_freq_params *freq, int set_chan)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG,
"nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
freq->freq, freq->ht_enabled, freq->vht_enabled,
freq->bandwidth, freq->center_freq1, freq->center_freq2);
msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
NL80211_CMD_SET_WIPHY);
if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret == 0) {
bss->freq = freq->freq;
return 0;
}
wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
"%d (%s)", freq->freq, ret, strerror(-ret));
return -1;
}
static u32 sta_flags_nl80211(int flags)
{
u32 f = 0;
if (flags & WPA_STA_AUTHORIZED)
f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
if (flags & WPA_STA_WMM)
f |= BIT(NL80211_STA_FLAG_WME);
if (flags & WPA_STA_SHORT_PREAMBLE)
f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
if (flags & WPA_STA_MFP)
f |= BIT(NL80211_STA_FLAG_MFP);
if (flags & WPA_STA_TDLS_PEER)
f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
if (flags & WPA_STA_AUTHENTICATED)
f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
return f;
}
#ifdef CONFIG_MESH
static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
{
switch (state) {
case PLINK_LISTEN:
return NL80211_PLINK_LISTEN;
case PLINK_OPEN_SENT:
return NL80211_PLINK_OPN_SNT;
case PLINK_OPEN_RCVD:
return NL80211_PLINK_OPN_RCVD;
case PLINK_CNF_RCVD:
return NL80211_PLINK_CNF_RCVD;
case PLINK_ESTAB:
return NL80211_PLINK_ESTAB;
case PLINK_HOLDING:
return NL80211_PLINK_HOLDING;
case PLINK_BLOCKED:
return NL80211_PLINK_BLOCKED;
default:
wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
state);
}
return -1;
}
#endif /* CONFIG_MESH */
static int wpa_driver_nl80211_sta_add(void *priv,
struct hostapd_sta_add_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nl80211_sta_flag_update upd;
int ret = -ENOBUFS;
if ((params->flags & WPA_STA_TDLS_PEER) &&
!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
return -EOPNOTSUPP;
wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
params->set ? "Set" : "Add", MAC2STR(params->addr));
msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
NL80211_CMD_NEW_STATION);
if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
goto fail;
if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
wpa_hexdump(MSG_DEBUG, " * supported rates",
params->supp_rates, params->supp_rates_len);
wpa_printf(MSG_DEBUG, " * capability=0x%x",
params->capability);
if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
params->supp_rates_len, params->supp_rates) ||
nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
params->capability))
goto fail;
if (params->ht_capabilities) {
wpa_hexdump(MSG_DEBUG, " * ht_capabilities",
(u8 *) params->ht_capabilities,
sizeof(*params->ht_capabilities));
if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
sizeof(*params->ht_capabilities),
params->ht_capabilities))
goto fail;
}
if (params->vht_capabilities) {
wpa_hexdump(MSG_DEBUG, " * vht_capabilities",
(u8 *) params->vht_capabilities,
sizeof(*params->vht_capabilities));
if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
sizeof(*params->vht_capabilities),
params->vht_capabilities))
goto fail;
}
if (params->ext_capab) {
wpa_hexdump(MSG_DEBUG, " * ext_capab",
params->ext_capab, params->ext_capab_len);
if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
params->ext_capab_len, params->ext_capab))
goto fail;
}
}
if (!params->set) {
if (params->aid) {
wpa_printf(MSG_DEBUG, " * aid=%u", params->aid);
if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
goto fail;
} else {
/*
* cfg80211 validates that AID is non-zero, so we have
* to make this a non-zero value for the TDLS case where
* a dummy STA entry is used for now.
*/
wpa_printf(MSG_DEBUG, " * aid=1 (TDLS workaround)");
if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
goto fail;
}
wpa_printf(MSG_DEBUG, " * listen_interval=%u",
params->listen_interval);
if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
params->listen_interval))
goto fail;
} else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
wpa_printf(MSG_DEBUG, " * peer_aid=%u", params->aid);
if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
goto fail;
}
if (params->vht_opmode_enabled) {
wpa_printf(MSG_DEBUG, " * opmode=%u", params->vht_opmode);
if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
params->vht_opmode))
goto fail;
}
if (params->supp_channels) {
wpa_hexdump(MSG_DEBUG, " * supported channels",
params->supp_channels, params->supp_channels_len);
if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
params->supp_channels_len, params->supp_channels))
goto fail;
}
if (params->supp_oper_classes) {
wpa_hexdump(MSG_DEBUG, " * supported operating classes",
params->supp_oper_classes,
params->supp_oper_classes_len);
if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
params->supp_oper_classes_len,
params->supp_oper_classes))
goto fail;
}
os_memset(&upd, 0, sizeof(upd));
upd.set = sta_flags_nl80211(params->flags);
upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x",
upd.set, upd.mask);
if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
goto fail;
#ifdef CONFIG_MESH
if (params->plink_state &&
nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
sta_plink_state_nl80211(params->plink_state)))
goto fail;
#endif /* CONFIG_MESH */
if (params->flags & WPA_STA_WMM) {
struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo);
if (!wme ||
nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
(params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
WMM_QOSINFO_STA_SP_MASK))
goto fail;
nla_nest_end(msg, wme);
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
"result: %d (%s)", params->set ? "SET" : "NEW", ret,
strerror(-ret));
if (ret == -EEXIST)
ret = 0;
fail:
nlmsg_free(msg);
return ret;
}
static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
{
#ifdef CONFIG_LIBNL3_ROUTE
struct wpa_driver_nl80211_data *drv = bss->drv;
struct rtnl_neigh *rn;
struct nl_addr *nl_addr;
int err;
rn = rtnl_neigh_alloc();
if (!rn)
return;
rtnl_neigh_set_family(rn, AF_BRIDGE);
rtnl_neigh_set_ifindex(rn, bss->ifindex);
nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
if (!nl_addr) {
rtnl_neigh_put(rn);
return;
}
rtnl_neigh_set_lladdr(rn, nl_addr);
err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
if (err < 0) {
wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
bss->ifindex, nl_geterror(err));
} else {
wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
MACSTR, MAC2STR(addr));
}
nl_addr_put(nl_addr);
rtnl_neigh_put(rn);
#endif /* CONFIG_LIBNL3_ROUTE */
}
static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
int deauth, u16 reason_code)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
(deauth == 0 &&
nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
WLAN_FC_STYPE_DISASSOC)) ||
(deauth == 1 &&
nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
WLAN_FC_STYPE_DEAUTH)) ||
(reason_code &&
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
" --> %d (%s)",
bss->ifname, MAC2STR(addr), ret, strerror(-ret));
if (drv->rtnl_sk)
rtnl_neigh_delete_fdb_entry(bss, addr);
if (ret == -ENOENT)
return 0;
return ret;
}
void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
{
struct nl_msg *msg;
struct wpa_driver_nl80211_data *drv2;
wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
/* stop listening for EAPOL on this interface */
dl_list_for_each(drv2, &drv->global->interfaces,
struct wpa_driver_nl80211_data, list)
del_ifidx(drv2, ifidx);
msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
return;
wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
}
static const char * nl80211_iftype_str(enum nl80211_iftype mode)
{
switch (mode) {
case NL80211_IFTYPE_ADHOC:
return "ADHOC";
case NL80211_IFTYPE_STATION:
return "STATION";
case NL80211_IFTYPE_AP:
return "AP";
case NL80211_IFTYPE_AP_VLAN:
return "AP_VLAN";
case NL80211_IFTYPE_WDS:
return "WDS";
case NL80211_IFTYPE_MONITOR:
return "MONITOR";
case NL80211_IFTYPE_MESH_POINT:
return "MESH_POINT";
case NL80211_IFTYPE_P2P_CLIENT:
return "P2P_CLIENT";
case NL80211_IFTYPE_P2P_GO:
return "P2P_GO";
case NL80211_IFTYPE_P2P_DEVICE:
return "P2P_DEVICE";
default:
return "unknown";
}
}
static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
const char *ifname,
enum nl80211_iftype iftype,
const u8 *addr, int wds,
int (*handler)(struct nl_msg *, void *),
void *arg)
{
struct nl_msg *msg;
int ifidx;
int ret = -ENOBUFS;
wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
iftype, nl80211_iftype_str(iftype));
msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
if (!msg ||
nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
goto fail;
if (iftype == NL80211_IFTYPE_MONITOR) {
struct nlattr *flags;
flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
if (!flags ||
nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
goto fail;
nla_nest_end(msg, flags);
} else if (wds) {
if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
goto fail;
}
/*
* Tell cfg80211 that the interface belongs to the socket that created
* it, and the interface should be deleted when the socket is closed.
*/
if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
goto fail;
ret = send_and_recv_msgs(drv, msg, handler, arg);
msg = NULL;
if (ret) {
fail:
nlmsg_free(msg);
wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
ifname, ret, strerror(-ret));
return ret;
}
if (iftype == NL80211_IFTYPE_P2P_DEVICE)
return 0;
ifidx = if_nametoindex(ifname);
wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
ifname, ifidx);
if (ifidx <= 0)
return -1;
/*
* Some virtual interfaces need to process EAPOL packets and events on
* the parent interface. This is used mainly with hostapd.
*/
if (drv->hostapd ||
iftype == NL80211_IFTYPE_AP_VLAN ||
iftype == NL80211_IFTYPE_WDS ||
iftype == NL80211_IFTYPE_MONITOR) {
/* start listening for EAPOL on this interface */
add_ifidx(drv, ifidx);
}
if (addr && iftype != NL80211_IFTYPE_MONITOR &&
linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
nl80211_remove_iface(drv, ifidx);
return -1;
}
return ifidx;
}
int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
const char *ifname, enum nl80211_iftype iftype,
const u8 *addr, int wds,
int (*handler)(struct nl_msg *, void *),
void *arg, int use_existing)
{
int ret;
ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
arg);
/* if error occurred and interface exists already */
if (ret == -ENFILE && if_nametoindex(ifname)) {
if (use_existing) {
wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
ifname);
if (addr && iftype != NL80211_IFTYPE_MONITOR &&
linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
addr) < 0 &&
(linux_set_iface_flags(drv->global->ioctl_sock,
ifname, 0) < 0 ||
linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
addr) < 0 ||
linux_set_iface_flags(drv->global->ioctl_sock,
ifname, 1) < 0))
return -1;
return -ENFILE;
}
wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
/* Try to remove the interface that was already there. */
nl80211_remove_iface(drv, if_nametoindex(ifname));
/* Try to create the interface again */
ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
wds, handler, arg);
}
if (ret >= 0 && is_p2p_net_interface(iftype)) {
wpa_printf(MSG_DEBUG,
"nl80211: Interface %s created for P2P - disable 11b rates",
ifname);
nl80211_disable_11b_rates(drv, ret, 1);
}
return ret;
}
static int nl80211_setup_ap(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
bss->ifname, drv->device_ap_sme, drv->use_monitor);
/*
* Disable Probe Request reporting unless we need it in this way for
* devices that include the AP SME, in the other case (unless using
* monitor iface) we'll get it through the nl_mgmt socket instead.
*/
if (!drv->device_ap_sme)
wpa_driver_nl80211_probe_req_report(bss, 0);
if (!drv->device_ap_sme && !drv->use_monitor)
if (nl80211_mgmt_subscribe_ap(bss))
return -1;
if (drv->device_ap_sme && !drv->use_monitor)
if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
return -1;
if (!drv->device_ap_sme && drv->use_monitor &&
nl80211_create_monitor_interface(drv) &&
!drv->device_ap_sme)
return -1;
if (drv->device_ap_sme &&
wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
"Probe Request frame reporting in AP mode");
/* Try to survive without this */
}
return 0;
}
static void nl80211_teardown_ap(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
bss->ifname, drv->device_ap_sme, drv->use_monitor);
if (drv->device_ap_sme) {
wpa_driver_nl80211_probe_req_report(bss, 0);
if (!drv->use_monitor)
nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
} else if (drv->use_monitor)
nl80211_remove_monitor_interface(drv);
else
nl80211_mgmt_unsubscribe(bss, "AP teardown");
bss->beacon_set = 0;
}
static int nl80211_send_eapol_data(struct i802_bss *bss,
const u8 *addr, const u8 *data,
size_t data_len)
{
struct sockaddr_ll ll;
int ret;
if (bss->drv->eapol_tx_sock < 0) {
wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
return -1;
}
os_memset(&ll, 0, sizeof(ll));
ll.sll_family = AF_PACKET;
ll.sll_ifindex = bss->ifindex;
ll.sll_protocol = htons(ETH_P_PAE);
ll.sll_halen = ETH_ALEN;
os_memcpy(ll.sll_addr, addr, ETH_ALEN);
ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
(struct sockaddr *) &ll, sizeof(ll));
if (ret < 0)
wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
strerror(errno));
return ret;
}
static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
static int wpa_driver_nl80211_hapd_send_eapol(
void *priv, const u8 *addr, const u8 *data,
size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct ieee80211_hdr *hdr;
size_t len;
u8 *pos;
int res;
int qos = flags & WPA_STA_WMM;
if (drv->device_ap_sme || !drv->use_monitor)
return nl80211_send_eapol_data(bss, addr, data, data_len);
len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
data_len;
hdr = os_zalloc(len);
if (hdr == NULL) {
wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
(unsigned long) len);
return -1;
}
hdr->frame_control =
IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
if (encrypt)
hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
if (qos) {
hdr->frame_control |=
host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
}
memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
pos = (u8 *) (hdr + 1);
if (qos) {
/* Set highest priority in QoS header */
pos[0] = 7;
pos[1] = 0;
pos += 2;
}
memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
pos += sizeof(rfc1042_header);
WPA_PUT_BE16(pos, ETH_P_PAE);
pos += 2;
memcpy(pos, data, data_len);
res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
0, 0, 0, 0);
if (res < 0) {
wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
"failed: %d (%s)",
(unsigned long) len, errno, strerror(errno));
}
os_free(hdr);
return res;
}
static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
int total_flags,
int flags_or, int flags_and)
{
struct i802_bss *bss = priv;
struct nl_msg *msg;
struct nlattr *flags;
struct nl80211_sta_flag_update upd;
wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
" total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
!!(total_flags & WPA_STA_AUTHORIZED));
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto fail;
/*
* Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
* can be removed eventually.
*/
flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
if (!flags ||
((total_flags & WPA_STA_AUTHORIZED) &&
nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
((total_flags & WPA_STA_WMM) &&
nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
((total_flags & WPA_STA_SHORT_PREAMBLE) &&
nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
((total_flags & WPA_STA_MFP) &&
nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
((total_flags & WPA_STA_TDLS_PEER) &&
nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
goto fail;
nla_nest_end(msg, flags);
os_memset(&upd, 0, sizeof(upd));
upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
upd.set = sta_flags_nl80211(flags_or);
if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
goto fail;
return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params)
{
enum nl80211_iftype nlmode, old_mode;
if (params->p2p) {
wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
"group (GO)");
nlmode = NL80211_IFTYPE_P2P_GO;
} else
nlmode = NL80211_IFTYPE_AP;
old_mode = drv->nlmode;
if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
nl80211_remove_monitor_interface(drv);
return -1;
}
if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
if (old_mode != nlmode)
wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
nl80211_remove_monitor_interface(drv);
return -1;
}
return 0;
}
static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
int reset_mode)
{
struct nl_msg *msg;
int ret;
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
"(%s)", ret, strerror(-ret));
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Leave IBSS request sent successfully");
}
if (reset_mode &&
wpa_driver_nl80211_set_mode(drv->first_bss,
NL80211_IFTYPE_STATION)) {
wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
"station mode");
}
return ret;
}
static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params)
{
struct nl_msg *msg;
int ret = -1;
int count = 0;
wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
"IBSS mode");
return -1;
}
retry:
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
goto fail;
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->ssid, params->ssid_len);
if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
goto fail;
os_memcpy(drv->ssid, params->ssid, params->ssid_len);
drv->ssid_len = params->ssid_len;
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
wpa_printf(MSG_DEBUG, " * ht_enabled=%d", params->freq.ht_enabled);
wpa_printf(MSG_DEBUG, " * sec_channel_offset=%d",
params->freq.sec_channel_offset);
wpa_printf(MSG_DEBUG, " * vht_enabled=%d", params->freq.vht_enabled);
wpa_printf(MSG_DEBUG, " * center_freq1=%d", params->freq.center_freq1);
wpa_printf(MSG_DEBUG, " * center_freq2=%d", params->freq.center_freq2);
wpa_printf(MSG_DEBUG, " * bandwidth=%d", params->freq.bandwidth);
if (nl80211_put_freq_params(msg, &params->freq) < 0)
goto fail;
if (params->beacon_int > 0) {
wpa_printf(MSG_DEBUG, " * beacon_int=%d", params->beacon_int);
if (nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
params->beacon_int))
goto fail;
}
ret = nl80211_set_conn_keys(params, msg);
if (ret)
goto fail;
if (params->bssid && params->fixed_bssid) {
wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR,
MAC2STR(params->bssid));
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
goto fail;
}
if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
wpa_printf(MSG_DEBUG, " * control port");
if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
goto fail;
}
if (params->wpa_ie) {
wpa_hexdump(MSG_DEBUG,
" * Extra IEs for Beacon/Probe Response frames",
params->wpa_ie, params->wpa_ie_len);
if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
params->wpa_ie))
goto fail;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
ret, strerror(-ret));
count++;
if (ret == -EALREADY && count == 1) {
wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
"forced leave");
nl80211_leave_ibss(drv, 0);
nlmsg_free(msg);
goto retry;
}
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Join IBSS request sent successfully");
}
fail:
nlmsg_free(msg);
return ret;
}
static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params,
struct nl_msg *msg)
{
if (params->bssid) {
wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
MAC2STR(params->bssid));
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
return -1;
}
if (params->bssid_hint) {
wpa_printf(MSG_DEBUG, " * bssid_hint=" MACSTR,
MAC2STR(params->bssid_hint));
if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
params->bssid_hint))
return -1;
}
if (params->freq.freq) {
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
params->freq.freq))
return -1;
drv->assoc_freq = params->freq.freq;
} else
drv->assoc_freq = 0;
if (params->freq_hint) {
wpa_printf(MSG_DEBUG, " * freq_hint=%d", params->freq_hint);
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
params->freq_hint))
return -1;
}
if (params->bg_scan_period >= 0) {
wpa_printf(MSG_DEBUG, " * bg scan period=%d",
params->bg_scan_period);
if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
params->bg_scan_period))
return -1;
}
if (params->ssid) {
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->ssid, params->ssid_len);
if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
params->ssid))
return -1;
if (params->ssid_len > sizeof(drv->ssid))
return -1;
os_memcpy(drv->ssid, params->ssid, params->ssid_len);
drv->ssid_len = params->ssid_len;
}
wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
if (params->wpa_ie &&
nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
return -1;
if (params->wpa_proto) {
enum nl80211_wpa_versions ver = 0;
if (params->wpa_proto & WPA_PROTO_WPA)
ver |= NL80211_WPA_VERSION_1;
if (params->wpa_proto & WPA_PROTO_RSN)
ver |= NL80211_WPA_VERSION_2;
wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
return -1;
}
if (params->pairwise_suite != WPA_CIPHER_NONE) {
u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
cipher))
return -1;
}
if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
!(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
/*
* This is likely to work even though many drivers do not
* advertise support for operations without GTK.
*/
wpa_printf(MSG_DEBUG, " * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
} else if (params->group_suite != WPA_CIPHER_NONE) {
u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
return -1;
}
if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
int mgmt = WLAN_AKM_SUITE_PSK;
switch (params->key_mgmt_suite) {
case WPA_KEY_MGMT_CCKM:
mgmt = WLAN_AKM_SUITE_CCKM;
break;
case WPA_KEY_MGMT_IEEE8021X:
mgmt = WLAN_AKM_SUITE_8021X;
break;
case WPA_KEY_MGMT_FT_IEEE8021X:
mgmt = WLAN_AKM_SUITE_FT_8021X;
break;
case WPA_KEY_MGMT_FT_PSK:
mgmt = WLAN_AKM_SUITE_FT_PSK;
break;
case WPA_KEY_MGMT_IEEE8021X_SHA256:
mgmt = WLAN_AKM_SUITE_8021X_SHA256;
break;
case WPA_KEY_MGMT_PSK_SHA256:
mgmt = WLAN_AKM_SUITE_PSK_SHA256;
break;
case WPA_KEY_MGMT_OSEN:
mgmt = WLAN_AKM_SUITE_OSEN;
break;
case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
break;
case WPA_KEY_MGMT_PSK:
default:
mgmt = WLAN_AKM_SUITE_PSK;
break;
}
wpa_printf(MSG_DEBUG, " * akm=0x%x", mgmt);
if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
return -1;
}
if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
return -1;
if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
return -1;
if (params->rrm_used) {
u32 drv_rrm_flags = drv->capa.rrm_flags;
if (!(drv_rrm_flags &
WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
!(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
nla_put_flag(msg, NL80211_ATTR_USE_RRM))
return -1;
}
if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
return -1;
if (params->htcaps && params->htcaps_mask) {
int sz = sizeof(struct ieee80211_ht_capabilities);
wpa_hexdump(MSG_DEBUG, " * htcaps", params->htcaps, sz);
wpa_hexdump(MSG_DEBUG, " * htcaps_mask",
params->htcaps_mask, sz);
if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
params->htcaps) ||
nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
params->htcaps_mask))
return -1;
}
#ifdef CONFIG_VHT_OVERRIDES
if (params->disable_vht) {
wpa_printf(MSG_DEBUG, " * VHT disabled");
if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
return -1;
}
if (params->vhtcaps && params->vhtcaps_mask) {
int sz = sizeof(struct ieee80211_vht_capabilities);
wpa_hexdump(MSG_DEBUG, " * vhtcaps", params->vhtcaps, sz);
wpa_hexdump(MSG_DEBUG, " * vhtcaps_mask",
params->vhtcaps_mask, sz);
if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
params->vhtcaps) ||
nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
params->vhtcaps_mask))
return -1;
}
#endif /* CONFIG_VHT_OVERRIDES */
if (params->p2p)
wpa_printf(MSG_DEBUG, " * P2P group");
return 0;
}
static int wpa_driver_nl80211_try_connect(
struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params)
{
struct nl_msg *msg;
enum nl80211_auth_type type;
int ret;
int algs;
if (params->req_key_mgmt_offload && params->psk &&
(params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
ret = issue_key_mgmt_set_key(drv, params->psk, 32);
if (ret)
return ret;
}
wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
if (!msg)
return -1;
ret = nl80211_connect_common(drv, params, msg);
if (ret)
goto fail;
algs = 0;
if (params->auth_alg & WPA_AUTH_ALG_OPEN)
algs++;
if (params->auth_alg & WPA_AUTH_ALG_SHARED)
algs++;
if (params->auth_alg & WPA_AUTH_ALG_LEAP)
algs++;
if (algs > 1) {
wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
"selection");
goto skip_auth_type;
}
if (params->auth_alg & WPA_AUTH_ALG_OPEN)
type = NL80211_AUTHTYPE_OPEN_SYSTEM;
else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
type = NL80211_AUTHTYPE_SHARED_KEY;
else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
type = NL80211_AUTHTYPE_NETWORK_EAP;
else if (params->auth_alg & WPA_AUTH_ALG_FT)
type = NL80211_AUTHTYPE_FT;
else
goto fail;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
goto fail;
skip_auth_type:
ret = nl80211_set_conn_keys(params, msg);
if (ret)
goto fail;
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
"(%s)", ret, strerror(-ret));
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Connect request send successfully");
}
fail:
nlmsg_free(msg);
return ret;
}
static int wpa_driver_nl80211_connect(
struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params)
{
int ret;
/* Store the connection attempted bssid for future use */
if (params->bssid)
os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
else
os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
ret = wpa_driver_nl80211_try_connect(drv, params);
if (ret == -EALREADY) {
/*
* cfg80211 does not currently accept new connections if
* we are already connected. As a workaround, force
* disconnection and try again.
*/
wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
"disconnecting before reassociation "
"attempt");
if (wpa_driver_nl80211_disconnect(
drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
return -1;
ret = wpa_driver_nl80211_try_connect(drv, params);
}
return ret;
}
static int wpa_driver_nl80211_associate(
void *priv, struct wpa_driver_associate_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret = -1;
struct nl_msg *msg;
nl80211_unmask_11b_rates(bss);
if (params->mode == IEEE80211_MODE_AP)
return wpa_driver_nl80211_ap(drv, params);
if (params->mode == IEEE80211_MODE_IBSS)
return wpa_driver_nl80211_ibss(drv, params);
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
enum nl80211_iftype nlmode = params->p2p ?
NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
return -1;
return wpa_driver_nl80211_connect(drv, params);
}
nl80211_mark_disconnected(drv);
wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
if (!msg)
return -1;
ret = nl80211_connect_common(drv, params, msg);
if (ret)
goto fail;
if (params->prev_bssid) {
wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
MAC2STR(params->prev_bssid));
if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
params->prev_bssid))
goto fail;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_dbg(drv->ctx, MSG_DEBUG,
"nl80211: MLME command failed (assoc): ret=%d (%s)",
ret, strerror(-ret));
nl80211_dump_scan(drv);
} else {
wpa_printf(MSG_DEBUG,
"nl80211: Association request send successfully");
}
fail:
nlmsg_free(msg);
return ret;
}
static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
int ifindex, enum nl80211_iftype mode)
{
struct nl_msg *msg;
int ret = -ENOBUFS;
wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
ifindex, mode, nl80211_iftype_str(mode));
msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
goto fail;
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (!ret)
return 0;
fail:
nlmsg_free(msg);
wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
" %d (%s)", ifindex, mode, ret, strerror(-ret));
return ret;
}
static int wpa_driver_nl80211_set_mode_impl(
struct i802_bss *bss,
enum nl80211_iftype nlmode,
struct hostapd_freq_params *desired_freq_params)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret = -1;
int i;
int was_ap = is_ap_interface(drv->nlmode);
int res;
int mode_switch_res;
mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
mode_switch_res = 0;
if (mode_switch_res == 0) {
drv->nlmode = nlmode;
ret = 0;
goto done;
}
if (mode_switch_res == -ENODEV)
return -1;
if (nlmode == drv->nlmode) {
wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
"requested mode - ignore error");
ret = 0;
goto done; /* Already in the requested mode */
}
/* mac80211 doesn't allow mode changes while the device is up, so
* take the device down, try to set the mode again, and bring the
* device back up.
*/
wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
"interface down");
for (i = 0; i < 10; i++) {
res = i802_set_iface_flags(bss, 0);
if (res == -EACCES || res == -ENODEV)
break;
if (res != 0) {
wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
"interface down");
os_sleep(0, 100000);
continue;
}
/*
* Setting the mode will fail for some drivers if the phy is
* on a frequency that the mode is disallowed in.
*/
if (desired_freq_params) {
res = nl80211_set_channel(bss, desired_freq_params, 0);
if (res) {
wpa_printf(MSG_DEBUG,
"nl80211: Failed to set frequency on interface");
}
}
/* Try to set the mode again while the interface is down */
mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
if (mode_switch_res == -EBUSY) {
wpa_printf(MSG_DEBUG,
"nl80211: Delaying mode set while interface going down");
os_sleep(0, 100000);
continue;
}
ret = mode_switch_res;
break;
}
if (!ret) {
wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
"interface is down");
drv->nlmode = nlmode;
drv->ignore_if_down_event = 1;
}
/* Bring the interface back up */
res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
if (res != 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Failed to set interface up after switching mode");
ret = -1;
}
done:
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
"from %d failed", nlmode, drv->nlmode);
return ret;
}
if (is_p2p_net_interface(nlmode)) {
wpa_printf(MSG_DEBUG,
"nl80211: Interface %s mode change to P2P - disable 11b rates",
bss->ifname);
nl80211_disable_11b_rates(drv, drv->ifindex, 1);
} else if (drv->disabled_11b_rates) {
wpa_printf(MSG_DEBUG,
"nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
bss->ifname);
nl80211_disable_11b_rates(drv, drv->ifindex, 0);
}
if (is_ap_interface(nlmode)) {
nl80211_mgmt_unsubscribe(bss, "start AP");
/* Setup additional AP mode functionality if needed */
if (nl80211_setup_ap(bss))
return -1;
} else if (was_ap) {
/* Remove additional AP mode functionality */
nl80211_teardown_ap(bss);
} else {
nl80211_mgmt_unsubscribe(bss, "mode change");
}
if (is_mesh_interface(nlmode) &&
nl80211_mgmt_subscribe_mesh(bss))
return -1;
if (!bss->in_deinit && !is_ap_interface(nlmode) &&
!is_mesh_interface(nlmode) &&
nl80211_mgmt_subscribe_non_ap(bss) < 0)
wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
"frame processing - ignore for now");
return 0;
}
int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
enum nl80211_iftype nlmode)
{
return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
}
static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
struct hostapd_freq_params *freq)
{
return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
freq);
}
static int wpa_driver_nl80211_get_capa(void *priv,
struct wpa_driver_capa *capa)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!drv->has_capability)
return -1;
os_memcpy(capa, &drv->capa, sizeof(*capa));
if (drv->extended_capa && drv->extended_capa_mask) {
capa->extended_capa = drv->extended_capa;
capa->extended_capa_mask = drv->extended_capa_mask;
capa->extended_capa_len = drv->extended_capa_len;
}
return 0;
}
static int wpa_driver_nl80211_set_operstate(void *priv, int state)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
bss->ifname, drv->operstate, state,
state ? "UP" : "DORMANT");
drv->operstate = state;
return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
state ? IF_OPER_UP : IF_OPER_DORMANT);
}
static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nl80211_sta_flag_update upd;
int ret;
if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
return 0;
}
wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
os_memset(&upd, 0, sizeof(upd));
upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
if (authorized)
upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (!ret)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
ret, strerror(-ret));
return ret;
}
/* Set kernel driver on given frequency (MHz) */
static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
{
struct i802_bss *bss = priv;
return nl80211_set_channel(bss, freq, 0);
}
static inline int min_int(int a, int b)
{
if (a < b)
return a;
return b;
}
static int get_key_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
/*
* TODO: validate the key index and mac address!
* Otherwise, there's a race condition as soon as
* the kernel starts sending key notifications.
*/
if (tb[NL80211_ATTR_KEY_SEQ])
memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
return NL_SKIP;
}
static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
int idx, u8 *seq)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
NL80211_CMD_GET_KEY);
if (!msg ||
(addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
nlmsg_free(msg);
return -ENOBUFS;
}
memset(seq, 0, 6);
return send_and_recv_msgs(drv, msg, get_key_handler, seq);
}
static int i802_set_rts(void *priv, int rts)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
u32 val;
if (rts >= 2347)
val = (u32) -1;
else
val = rts;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (!ret)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
"%d (%s)", rts, ret, strerror(-ret));
return ret;
}
static int i802_set_frag(void *priv, int frag)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
u32 val;
if (frag >= 2346)
val = (u32) -1;
else
val = frag;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (!ret)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
"%d: %d (%s)", frag, ret, strerror(-ret));
return ret;
}
static int i802_flush(void *priv)
{
struct i802_bss *bss = priv;
struct nl_msg *msg;
int res;
wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
bss->ifname);
/*
* XXX: FIX! this needs to flush all VLANs too
*/
msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
if (res) {
wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
"(%s)", res, strerror(-res));
}
return res;
}
static int get_sta_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct hostap_sta_driver_data *data = arg;
struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
[NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
[NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
[NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
[NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
[NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
[NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
};
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
/*
* TODO: validate the interface and mac address!
* Otherwise, there's a race condition as soon as
* the kernel starts sending station notifications.
*/
if (!tb[NL80211_ATTR_STA_INFO]) {
wpa_printf(MSG_DEBUG, "sta stats missing!");
return NL_SKIP;
}
if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
tb[NL80211_ATTR_STA_INFO],
stats_policy)) {
wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
return NL_SKIP;
}
if (stats[NL80211_STA_INFO_INACTIVE_TIME])
data->inactive_msec =
nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
if (stats[NL80211_STA_INFO_RX_BYTES])
data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
if (stats[NL80211_STA_INFO_TX_BYTES])
data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
if (stats[NL80211_STA_INFO_RX_PACKETS])
data->rx_packets =
nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
if (stats[NL80211_STA_INFO_TX_PACKETS])
data->tx_packets =
nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
if (stats[NL80211_STA_INFO_TX_FAILED])
data->tx_retry_failed =
nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
return NL_SKIP;
}
static int i802_read_sta_data(struct i802_bss *bss,
struct hostap_sta_driver_data *data,
const u8 *addr)
{
struct nl_msg *msg;
os_memset(data, 0, sizeof(*data));
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
nlmsg_free(msg);
return -ENOBUFS;
}
return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
}
static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
int cw_min, int cw_max, int burst_time)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *txq, *params;
msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
if (!msg)
return -1;
txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
if (!txq)
goto fail;
/* We are only sending parameters for a single TXQ at a time */
params = nla_nest_start(msg, 1);
if (!params)
goto fail;
switch (queue) {
case 0:
if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
goto fail;
break;
case 1:
if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
goto fail;
break;
case 2:
if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
goto fail;
break;
case 3:
if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
goto fail;
break;
}
/* Burst time is configured in units of 0.1 msec and TXOP parameter in
* 32 usec, so need to convert the value here. */
if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
(burst_time * 100 + 16) / 32) ||
nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
goto fail;
nla_nest_end(msg, params);
nla_nest_end(msg, txq);
if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
return 0;
msg = NULL;
fail:
nlmsg_free(msg);
return -1;
}
static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
const char *ifname, int vlan_id)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
", ifname=%s[%d], vlan_id=%d)",
bss->ifname, if_nametoindex(bss->ifname),
MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret < 0) {
wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
MAC2STR(addr), ifname, vlan_id, ret,
strerror(-ret));
}
return ret;
}
static int i802_get_inact_sec(void *priv, const u8 *addr)
{
struct hostap_sta_driver_data data;
int ret;
data.inactive_msec = (unsigned long) -1;
ret = i802_read_sta_data(priv, &data, addr);
if (ret || data.inactive_msec == (unsigned long) -1)
return -1;
return data.inactive_msec / 1000;
}
static int i802_sta_clear_stats(void *priv, const u8 *addr)
{
#if 0
/* TODO */
#endif
return 0;
}
static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
int reason)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct ieee80211_mgmt mgmt;
if (is_mesh_interface(drv->nlmode))
return -1;
if (drv->device_ap_sme)
return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
memset(&mgmt, 0, sizeof(mgmt));
mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_DEAUTH);
memcpy(mgmt.da, addr, ETH_ALEN);
memcpy(mgmt.sa, own_addr, ETH_ALEN);
memcpy(mgmt.bssid, own_addr, ETH_ALEN);
mgmt.u.deauth.reason_code = host_to_le16(reason);
return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
IEEE80211_HDRLEN +
sizeof(mgmt.u.deauth), 0, 0, 0, 0,
0);
}
static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
int reason)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct ieee80211_mgmt mgmt;
if (is_mesh_interface(drv->nlmode))
return -1;
if (drv->device_ap_sme)
return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
memset(&mgmt, 0, sizeof(mgmt));
mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_DISASSOC);
memcpy(mgmt.da, addr, ETH_ALEN);
memcpy(mgmt.sa, own_addr, ETH_ALEN);
memcpy(mgmt.bssid, own_addr, ETH_ALEN);
mgmt.u.disassoc.reason_code = host_to_le16(reason);
return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
IEEE80211_HDRLEN +
sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
0);
}
static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
{
char buf[200], *pos, *end;
int i, res;
pos = buf;
end = pos + sizeof(buf);
for (i = 0; i < drv->num_if_indices; i++) {
if (!drv->if_indices[i])
continue;
res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
if (os_snprintf_error(end - pos, res))
break;
pos += res;
}
*pos = '\0';
wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
drv->num_if_indices, buf);
}
static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
{
int i;
int *old;
wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
ifidx);
if (have_ifidx(drv, ifidx)) {
wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
ifidx);
return;
}
for (i = 0; i < drv->num_if_indices; i++) {
if (drv->if_indices[i] == 0) {
drv->if_indices[i] = ifidx;
dump_ifidx(drv);
return;
}
}
if (drv->if_indices != drv->default_if_indices)
old = drv->if_indices;
else
old = NULL;
drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
sizeof(int));
if (!drv->if_indices) {
if (!old)
drv->if_indices = drv->default_if_indices;
else
drv->if_indices = old;
wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
"interfaces");
wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
return;
} else if (!old)
os_memcpy(drv->if_indices, drv->default_if_indices,
sizeof(drv->default_if_indices));
drv->if_indices[drv->num_if_indices] = ifidx;
drv->num_if_indices++;
dump_ifidx(drv);
}
static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
{
int i;
for (i = 0; i < drv->num_if_indices; i++) {
if (drv->if_indices[i] == ifidx) {
drv->if_indices[i] = 0;
break;
}
}
dump_ifidx(drv);
}
static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
{
int i;
for (i = 0; i < drv->num_if_indices; i++)
if (drv->if_indices[i] == ifidx)
return 1;
return 0;
}
static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
const char *bridge_ifname, char *ifname_wds)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
char name[IFNAMSIZ + 1];
os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
if (ifname_wds)
os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
" aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
if (val) {
if (!if_nametoindex(name)) {
if (nl80211_create_iface(drv, name,
NL80211_IFTYPE_AP_VLAN,
bss->addr, 1, NULL, NULL, 0) <
0)
return -1;
if (bridge_ifname &&
linux_br_add_if(drv->global->ioctl_sock,
bridge_ifname, name) < 0)
return -1;
}
if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
"interface %s up", name);
}
return i802_set_sta_vlan(priv, addr, name, 0);
} else {
if (bridge_ifname)
linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
name);
i802_set_sta_vlan(priv, addr, bss->ifname, 0);
nl80211_remove_iface(drv, if_nametoindex(name));
return 0;
}
}
static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
{
struct wpa_driver_nl80211_data *drv = eloop_ctx;
struct sockaddr_ll lladdr;
unsigned char buf[3000];
int len;
socklen_t fromlen = sizeof(lladdr);
len = recvfrom(sock, buf, sizeof(buf), 0,
(struct sockaddr *)&lladdr, &fromlen);
if (len < 0) {
wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
strerror(errno));
return;
}
if (have_ifidx(drv, lladdr.sll_ifindex))
drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
}
static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
struct i802_bss *bss,
const char *brname, const char *ifname)
{
int br_ifindex;
char in_br[IFNAMSIZ];
os_strlcpy(bss->brname, brname, IFNAMSIZ);
br_ifindex = if_nametoindex(brname);
if (br_ifindex == 0) {
/*
* Bridge was configured, but the bridge device does
* not exist. Try to add it now.
*/
if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
"bridge interface %s: %s",
brname, strerror(errno));
return -1;
}
bss->added_bridge = 1;
br_ifindex = if_nametoindex(brname);
add_ifidx(drv, br_ifindex);
}
bss->br_ifindex = br_ifindex;
if (linux_br_get(in_br, ifname) == 0) {
if (os_strcmp(in_br, brname) == 0)
return 0; /* already in the bridge */
wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
"bridge %s", ifname, in_br);
if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
0) {
wpa_printf(MSG_ERROR, "nl80211: Failed to "
"remove interface %s from bridge "
"%s: %s",
ifname, brname, strerror(errno));
return -1;
}
}
wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
ifname, brname);
if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
"into bridge %s: %s",
ifname, brname, strerror(errno));
return -1;
}
bss->added_if_into_bridge = 1;
return 0;
}
static void *i802_init(struct hostapd_data *hapd,
struct wpa_init_params *params)
{
struct wpa_driver_nl80211_data *drv;
struct i802_bss *bss;
size_t i;
char brname[IFNAMSIZ];
int ifindex, br_ifindex;
int br_added = 0;
bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
params->global_priv, 1,
params->bssid, params->driver_params);
if (bss == NULL)
return NULL;
drv = bss->drv;
if (linux_br_get(brname, params->ifname) == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
params->ifname, brname);
br_ifindex = if_nametoindex(brname);
os_strlcpy(bss->brname, brname, IFNAMSIZ);
} else {
brname[0] = '\0';
br_ifindex = 0;
}
bss->br_ifindex = br_ifindex;
for (i = 0; i < params->num_bridge; i++) {
if (params->bridge[i]) {
ifindex = if_nametoindex(params->bridge[i]);
if (ifindex)
add_ifidx(drv, ifindex);
if (ifindex == br_ifindex)
br_added = 1;
}
}
/* start listening for EAPOL on the default AP interface */
add_ifidx(drv, drv->ifindex);
if (params->num_bridge && params->bridge[0]) {
if (i802_check_bridge(drv, bss, params->bridge[0],
params->ifname) < 0)
goto failed;
if (os_strcmp(params->bridge[0], brname) != 0)
br_added = 1;
}
if (!br_added && br_ifindex &&
(params->num_bridge == 0 || !params->bridge[0]))
add_ifidx(drv, br_ifindex);
#ifdef CONFIG_LIBNL3_ROUTE
if (bss->added_if_into_bridge) {
drv->rtnl_sk = nl_socket_alloc();
if (drv->rtnl_sk == NULL) {
wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
goto failed;
}
if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
strerror(errno));
goto failed;
}
}
#endif /* CONFIG_LIBNL3_ROUTE */
drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
if (drv->eapol_sock < 0) {
wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
strerror(errno));
goto failed;
}
if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
{
wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
goto failed;
}
if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
params->own_addr))
goto failed;
os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
memcpy(bss->addr, params->own_addr, ETH_ALEN);
return bss;
failed:
wpa_driver_nl80211_deinit(bss);
return NULL;
}
static void i802_deinit(void *priv)
{
struct i802_bss *bss = priv;
wpa_driver_nl80211_deinit(bss);
}
static enum nl80211_iftype wpa_driver_nl80211_if_type(
enum wpa_driver_if_type type)
{
switch (type) {
case WPA_IF_STATION:
return NL80211_IFTYPE_STATION;
case WPA_IF_P2P_CLIENT:
case WPA_IF_P2P_GROUP:
return NL80211_IFTYPE_P2P_CLIENT;
case WPA_IF_AP_VLAN:
return NL80211_IFTYPE_AP_VLAN;
case WPA_IF_AP_BSS:
return NL80211_IFTYPE_AP;
case WPA_IF_P2P_GO:
return NL80211_IFTYPE_P2P_GO;
case WPA_IF_P2P_DEVICE:
return NL80211_IFTYPE_P2P_DEVICE;
case WPA_IF_MESH:
return NL80211_IFTYPE_MESH_POINT;
}
return -1;
}
#if defined(CONFIG_P2P) || defined(CONFIG_MESH)
static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
{
struct wpa_driver_nl80211_data *drv;
dl_list_for_each(drv, &global->interfaces,
struct wpa_driver_nl80211_data, list) {
if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
return 1;
}
return 0;
}
static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
{
unsigned int idx;
if (!drv->global)
return -1;
os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
for (idx = 0; idx < 64; idx++) {
new_addr[0] = drv->first_bss->addr[0] | 0x02;
new_addr[0] ^= idx << 2;
if (!nl80211_addr_in_use(drv->global, new_addr))
break;
}
if (idx == 64)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
MACSTR, MAC2STR(new_addr));
return 0;
}
#endif /* CONFIG_P2P || CONFIG_MESH */
struct wdev_info {
u64 wdev_id;
int wdev_id_set;
u8 macaddr[ETH_ALEN];
};
static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
{
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct wdev_info *wi = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_WDEV]) {
wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
wi->wdev_id_set = 1;
}
if (tb[NL80211_ATTR_MAC])
os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
ETH_ALEN);
return NL_SKIP;
}
static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
const char *ifname, const u8 *addr,
void *bss_ctx, void **drv_priv,
char *force_ifname, u8 *if_addr,
const char *bridge, int use_existing)
{
enum nl80211_iftype nlmode;
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int ifidx;
int added = 1;
if (addr)
os_memcpy(if_addr, addr, ETH_ALEN);
nlmode = wpa_driver_nl80211_if_type(type);
if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
struct wdev_info p2pdev_info;
os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
0, nl80211_wdev_handler,
&p2pdev_info, use_existing);
if (!p2pdev_info.wdev_id_set || ifidx != 0) {
wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
ifname);
return -1;
}
drv->global->if_add_wdevid = p2pdev_info.wdev_id;
drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
if (!is_zero_ether_addr(p2pdev_info.macaddr))
os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
ifname,
(long long unsigned int) p2pdev_info.wdev_id);
} else {
ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
0, NULL, NULL, use_existing);
if (use_existing && ifidx == -ENFILE) {
added = 0;
ifidx = if_nametoindex(ifname);
} else if (ifidx < 0) {
return -1;
}
}
if (!addr) {
if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
os_memcpy(if_addr, bss->addr, ETH_ALEN);
else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
bss->ifname, if_addr) < 0) {
if (added)
nl80211_remove_iface(drv, ifidx);
return -1;
}
}
#if defined(CONFIG_P2P) || defined(CONFIG_MESH)
if (!addr &&
(type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
/* Enforce unique P2P Interface Address */
u8 new_addr[ETH_ALEN];
if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
new_addr) < 0) {
if (added)
nl80211_remove_iface(drv, ifidx);
return -1;
}
if (nl80211_addr_in_use(drv->global, new_addr)) {
wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
"for %s interface", type == WPA_IF_MESH ?
"mesh" : "P2P group");
if (nl80211_vif_addr(drv, new_addr) < 0) {
if (added)
nl80211_remove_iface(drv, ifidx);
return -1;
}
if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
new_addr) < 0) {
if (added)
nl80211_remove_iface(drv, ifidx);
return -1;
}
}
os_memcpy(if_addr, new_addr, ETH_ALEN);
}
#endif /* CONFIG_P2P || CONFIG_MESH */
if (type == WPA_IF_AP_BSS) {
struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
if (new_bss == NULL) {
if (added)
nl80211_remove_iface(drv, ifidx);
return -1;
}
if (bridge &&
i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
"interface %s to a bridge %s",
ifname, bridge);
if (added)
nl80211_remove_iface(drv, ifidx);
os_free(new_bss);
return -1;
}
if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
{
if (added)
nl80211_remove_iface(drv, ifidx);
os_free(new_bss);
return -1;
}
os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
new_bss->ifindex = ifidx;
new_bss->drv = drv;
new_bss->next = drv->first_bss->next;
new_bss->freq = drv->first_bss->freq;
new_bss->ctx = bss_ctx;
new_bss->added_if = added;
drv->first_bss->next = new_bss;
if (drv_priv)
*drv_priv = new_bss;
nl80211_init_bss(new_bss);
/* Subscribe management frames for this WPA_IF_AP_BSS */
if (nl80211_setup_ap(new_bss))
return -1;
}
if (drv->global)
drv->global->if_add_ifindex = ifidx;
/*
* Some virtual interfaces need to process EAPOL packets and events on
* the parent interface. This is used mainly with hostapd.
*/
if (ifidx > 0 &&
(drv->hostapd ||
nlmode == NL80211_IFTYPE_AP_VLAN ||
nlmode == NL80211_IFTYPE_WDS ||
nlmode == NL80211_IFTYPE_MONITOR))
add_ifidx(drv, ifidx);
return 0;
}
static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
enum wpa_driver_if_type type,
const char *ifname)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ifindex = if_nametoindex(ifname);
wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
__func__, type, ifname, ifindex, bss->added_if);
if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
nl80211_remove_iface(drv, ifindex);
else if (ifindex > 0 && !bss->added_if) {
struct wpa_driver_nl80211_data *drv2;
dl_list_for_each(drv2, &drv->global->interfaces,
struct wpa_driver_nl80211_data, list)
del_ifidx(drv2, ifindex);
}
if (type != WPA_IF_AP_BSS)
return 0;
if (bss->added_if_into_bridge) {
if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
bss->ifname) < 0)
wpa_printf(MSG_INFO, "nl80211: Failed to remove "
"interface %s from bridge %s: %s",
bss->ifname, bss->brname, strerror(errno));
}
if (bss->added_bridge) {
if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
wpa_printf(MSG_INFO, "nl80211: Failed to remove "
"bridge %s: %s",
bss->brname, strerror(errno));
}
if (bss != drv->first_bss) {
struct i802_bss *tbss;
wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
if (tbss->next == bss) {
tbss->next = bss->next;
/* Unsubscribe management frames */
nl80211_teardown_ap(bss);
nl80211_destroy_bss(bss);
if (!bss->added_if)
i802_set_iface_flags(bss, 0);
os_free(bss);
bss = NULL;
break;
}
}
if (bss)
wpa_printf(MSG_INFO, "nl80211: %s - could not find "
"BSS %p in the list", __func__, bss);
} else {
wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
nl80211_teardown_ap(bss);
if (!bss->added_if && !drv->first_bss->next)
wpa_driver_nl80211_del_beacon(drv);
nl80211_destroy_bss(bss);
if (!bss->added_if)
i802_set_iface_flags(bss, 0);
if (drv->first_bss->next) {
drv->first_bss = drv->first_bss->next;
drv->ctx = drv->first_bss->ctx;
os_free(bss);
} else {
wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
}
}
return 0;
}
static int cookie_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
u64 *cookie = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_COOKIE])
*cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
return NL_SKIP;
}
static int nl80211_send_frame_cmd(struct i802_bss *bss,
unsigned int freq, unsigned int wait,
const u8 *buf, size_t buf_len,
u64 *cookie_out, int no_cck, int no_ack,
int offchanok)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
u64 cookie;
int ret = -1;
wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
"no_ack=%d offchanok=%d",
freq, wait, no_cck, no_ack, offchanok);
wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
(freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
(wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
(offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
drv->test_use_roc_tx) &&
nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
(no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
(no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
goto fail;
cookie = 0;
ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
"(%s) (freq=%u wait=%u)", ret, strerror(-ret),
freq, wait);
} else {
wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
"cookie 0x%llx", no_ack ? " (no ACK)" : "",
(long long unsigned int) cookie);
if (cookie_out)
*cookie_out = no_ack ? (u64) -1 : cookie;
}
fail:
nlmsg_free(msg);
return ret;
}
static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
unsigned int freq,
unsigned int wait_time,
const u8 *dst, const u8 *src,
const u8 *bssid,
const u8 *data, size_t data_len,
int no_cck)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
int ret = -1;
u8 *buf;
struct ieee80211_hdr *hdr;
wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
"freq=%u MHz wait=%d ms no_cck=%d)",
drv->ifindex, freq, wait_time, no_cck);
buf = os_zalloc(24 + data_len);
if (buf == NULL)
return ret;
os_memcpy(buf + 24, data, data_len);
hdr = (struct ieee80211_hdr *) buf;
hdr->frame_control =
IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
os_memcpy(hdr->addr1, dst, ETH_ALEN);
os_memcpy(hdr->addr2, src, ETH_ALEN);
os_memcpy(hdr->addr3, bssid, ETH_ALEN);
if (is_ap_interface(drv->nlmode) &&
(!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
(int) freq == bss->freq || drv->device_ap_sme ||
!drv->use_monitor))
ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
0, freq, no_cck, 1,
wait_time);
else
ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
24 + data_len,
&drv->send_action_cookie,
no_cck, 0, 1);
os_free(buf);
return ret;
}
static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
(long long unsigned int) drv->send_action_cookie);
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
nlmsg_free(msg);
return;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
"(%s)", ret, strerror(-ret));
}
static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
unsigned int duration)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
u64 cookie;
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
nlmsg_free(msg);
return -1;
}
cookie = 0;
ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
if (ret == 0) {
wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
"0x%llx for freq=%u MHz duration=%u",
(long long unsigned int) cookie, freq, duration);
drv->remain_on_chan_cookie = cookie;
drv->pending_remain_on_chan = 1;
return 0;
}
wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
"(freq=%d duration=%u): %d (%s)",
freq, duration, ret, strerror(-ret));
return -1;
}
static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
if (!drv->pending_remain_on_chan) {
wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
"to cancel");
return -1;
}
wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
"0x%llx",
(long long unsigned int) drv->remain_on_chan_cookie);
msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
if (!msg ||
nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret == 0)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
"%d (%s)", ret, strerror(-ret));
return -1;
}
static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!report) {
if (bss->nl_preq && drv->device_ap_sme &&
is_ap_interface(drv->nlmode) && !bss->in_deinit &&
!bss->static_ap) {
/*
* Do not disable Probe Request reporting that was
* enabled in nl80211_setup_ap().
*/
wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
"Probe Request reporting nl_preq=%p while "
"in AP mode", bss->nl_preq);
} else if (bss->nl_preq) {
wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
"reporting nl_preq=%p", bss->nl_preq);
nl80211_destroy_eloop_handle(&bss->nl_preq);
}
return 0;
}
if (bss->nl_preq) {
wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
"already on! nl_preq=%p", bss->nl_preq);
return 0;
}
bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
if (bss->nl_preq == NULL)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
"reporting nl_preq=%p", bss->nl_preq);
if (nl80211_register_frame(bss, bss->nl_preq,
(WLAN_FC_TYPE_MGMT << 2) |
(WLAN_FC_STYPE_PROBE_REQ << 4),
NULL, 0) < 0)
goto out_err;
nl80211_register_eloop_read(&bss->nl_preq,
wpa_driver_nl80211_event_receive,
bss->nl_cb);
return 0;
out_err:
nl_destroy_handles(&bss->nl_preq);
return -1;
}
static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
int ifindex, int disabled)
{
struct nl_msg *msg;
struct nlattr *bands, *band;
int ret;
wpa_printf(MSG_DEBUG,
"nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
"no NL80211_TXRATE_LEGACY constraint");
msg = nl80211_ifindex_msg(drv, ifindex, 0,
NL80211_CMD_SET_TX_BITRATE_MASK);
if (!msg)
return -1;
bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
if (!bands)
goto fail;
/*
* Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
* else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
* rates. All 5 GHz rates are left enabled.
*/
band = nla_nest_start(msg, NL80211_BAND_2GHZ);
if (!band ||
(disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
"\x0c\x12\x18\x24\x30\x48\x60\x6c")))
goto fail;
nla_nest_end(msg, band);
nla_nest_end(msg, bands);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
"(%s)", ret, strerror(-ret));
} else
drv->disabled_11b_rates = disabled;
return ret;
fail:
nlmsg_free(msg);
return -1;
}
static int wpa_driver_nl80211_deinit_ap(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!is_ap_interface(drv->nlmode))
return -1;
wpa_driver_nl80211_del_beacon(drv);
bss->beacon_set = 0;
/*
* If the P2P GO interface was dynamically added, then it is
* possible that the interface change to station is not possible.
*/
if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
return 0;
return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
}
static int wpa_driver_nl80211_stop_ap(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (!is_ap_interface(drv->nlmode))
return -1;
wpa_driver_nl80211_del_beacon(drv);
bss->beacon_set = 0;
return 0;
}
static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
return -1;
/*
* If the P2P Client interface was dynamically added, then it is
* possible that the interface change to station is not possible.
*/
if (bss->if_dynamic)
return 0;
return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
}
static void wpa_driver_nl80211_resume(void *priv)
{
struct i802_bss *bss = priv;
if (i802_set_iface_flags(bss, 1))
wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
}
static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *cqm;
wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
"hysteresis=%d", threshold, hysteresis);
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
!(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
nlmsg_free(msg);
return -1;
}
nla_nest_end(msg, cqm);
return send_and_recv_msgs(drv, msg, NULL, NULL);
}
static int get_channel_width(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wpa_signal_info *sig_change = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
sig_change->center_frq1 = -1;
sig_change->center_frq2 = -1;
sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
sig_change->chanwidth = convert2width(
nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
if (tb[NL80211_ATTR_CENTER_FREQ1])
sig_change->center_frq1 =
nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
if (tb[NL80211_ATTR_CENTER_FREQ2])
sig_change->center_frq2 =
nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
}
return NL_SKIP;
}
static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
struct wpa_signal_info *sig)
{
struct nl_msg *msg;
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
return send_and_recv_msgs(drv, msg, get_channel_width, sig);
}
static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int res;
os_memset(si, 0, sizeof(*si));
res = nl80211_get_link_signal(drv, si);
if (res != 0)
return res;
res = nl80211_get_channel_width(drv, si);
if (res != 0)
return res;
return nl80211_get_link_noise(drv, si);
}
static int wpa_driver_nl80211_shared_freq(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct wpa_driver_nl80211_data *driver;
int freq = 0;
/*
* If the same PHY is in connected state with some other interface,
* then retrieve the assoc freq.
*/
wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
drv->phyname);
dl_list_for_each(driver, &drv->global->interfaces,
struct wpa_driver_nl80211_data, list) {
if (drv == driver ||
os_strcmp(drv->phyname, driver->phyname) != 0 ||
!driver->associated)
continue;
wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
MACSTR,
driver->phyname, driver->first_bss->ifname,
MAC2STR(driver->first_bss->addr));
if (is_ap_interface(driver->nlmode))
freq = driver->first_bss->freq;
else
freq = nl80211_get_assoc_freq(driver);
wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
drv->phyname, freq);
}
if (!freq)
wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
"PHY (%s) in associated state", drv->phyname);
return freq;
}
static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
int encrypt)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
0, 0, 0, 0);
}
static int nl80211_set_param(void *priv, const char *param)
{
wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
if (param == NULL)
return 0;
#ifdef CONFIG_P2P
if (os_strstr(param, "use_p2p_group_interface=1")) {
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
"interface");
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
}
#endif /* CONFIG_P2P */
if (os_strstr(param, "use_monitor=1")) {
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
drv->use_monitor = 1;
}
if (os_strstr(param, "force_connect_cmd=1")) {
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
drv->force_connect_cmd = 1;
}
if (os_strstr(param, "no_offchannel_tx=1")) {
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
drv->test_use_roc_tx = 1;
}
return 0;
}
static void * nl80211_global_init(void)
{
struct nl80211_global *global;
struct netlink_config *cfg;
global = os_zalloc(sizeof(*global));
if (global == NULL)
return NULL;
global->ioctl_sock = -1;
dl_list_init(&global->interfaces);
global->if_add_ifindex = -1;
cfg = os_zalloc(sizeof(*cfg));
if (cfg == NULL)
goto err;
cfg->ctx = global;
cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
global->netlink = netlink_init(cfg);
if (global->netlink == NULL) {
os_free(cfg);
goto err;
}
if (wpa_driver_nl80211_init_nl_global(global) < 0)
goto err;
global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
if (global->ioctl_sock < 0) {
wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
strerror(errno));
goto err;
}
return global;
err:
nl80211_global_deinit(global);
return NULL;
}
static void nl80211_global_deinit(void *priv)
{
struct nl80211_global *global = priv;
if (global == NULL)
return;
if (!dl_list_empty(&global->interfaces)) {
wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
"nl80211_global_deinit",
dl_list_len(&global->interfaces));
}
if (global->netlink)
netlink_deinit(global->netlink);
nl_destroy_handles(&global->nl);
if (global->nl_event)
nl80211_destroy_eloop_handle(&global->nl_event);
nl_cb_put(global->nl_cb);
if (global->ioctl_sock >= 0)
close(global->ioctl_sock);
os_free(global);
}
static const char * nl80211_get_radio_name(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
return drv->phyname;
}
static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
const u8 *pmkid)
{
struct nl_msg *msg;
if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
(pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
(bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
nlmsg_free(msg);
return -ENOBUFS;
}
return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
}
static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
{
struct i802_bss *bss = priv;
wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
}
static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
{
struct i802_bss *bss = priv;
wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
MAC2STR(bssid));
return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
}
static int nl80211_flush_pmkid(void *priv)
{
struct i802_bss *bss = priv;
wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
}
static void clean_survey_results(struct survey_results *survey_results)
{
struct freq_survey *survey, *tmp;
if (dl_list_empty(&survey_results->survey_list))
return;
dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
struct freq_survey, list) {
dl_list_del(&survey->list);
os_free(survey);
}
}
static void add_survey(struct nlattr **sinfo, u32 ifidx,
struct dl_list *survey_list)
{
struct freq_survey *survey;
survey = os_zalloc(sizeof(struct freq_survey));
if (!survey)
return;
survey->ifidx = ifidx;
survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
survey->filled = 0;
if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
survey->nf = (int8_t)
nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
survey->filled |= SURVEY_HAS_NF;
}
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
survey->channel_time =
nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
survey->filled |= SURVEY_HAS_CHAN_TIME;
}
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
survey->channel_time_busy =
nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
}
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
survey->channel_time_rx =
nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
}
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
survey->channel_time_tx =
nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
}
wpa_printf(MSG_DEBUG, "nl80211: Freq survey dump event (freq=%d MHz noise=%d channel_time=%ld busy_time=%ld tx_time=%ld rx_time=%ld filled=%04x)",
survey->freq,
survey->nf,
(unsigned long int) survey->channel_time,
(unsigned long int) survey->channel_time_busy,
(unsigned long int) survey->channel_time_tx,
(unsigned long int) survey->channel_time_rx,
survey->filled);
dl_list_add_tail(survey_list, &survey->list);
}
static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
unsigned int freq_filter)
{
if (!freq_filter)
return 1;
return freq_filter == surveyed_freq;
}
static int survey_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
struct survey_results *survey_results;
u32 surveyed_freq = 0;
u32 ifidx;
static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
[NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
[NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
};
survey_results = (struct survey_results *) arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb[NL80211_ATTR_IFINDEX])
return NL_SKIP;
ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
if (!tb[NL80211_ATTR_SURVEY_INFO])
return NL_SKIP;
if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
tb[NL80211_ATTR_SURVEY_INFO],
survey_policy))
return NL_SKIP;
if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
return NL_SKIP;
}
surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
if (!check_survey_ok(sinfo, surveyed_freq,
survey_results->freq_filter))
return NL_SKIP;
if (survey_results->freq_filter &&
survey_results->freq_filter != surveyed_freq) {
wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
surveyed_freq);
return NL_SKIP;
}
add_survey(sinfo, ifidx, &survey_results->survey_list);
return NL_SKIP;
}
static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int err;
union wpa_event_data data;
struct survey_results *survey_results;
os_memset(&data, 0, sizeof(data));
survey_results = &data.survey_results;
dl_list_init(&survey_results->survey_list);
msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
if (!msg)
return -ENOBUFS;
if (freq)
data.survey_results.freq_filter = freq;
do {
wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
err = send_and_recv_msgs(drv, msg, survey_handler,
survey_results);
} while (err > 0);
if (err)
wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
else
wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
clean_survey_results(survey_results);
return err;
}
static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
const u8 *replay_ctr)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nlattr *replay_nested;
struct nl_msg *msg;
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
!(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
nla_put(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek) ||
nla_put(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck) ||
nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
replay_ctr)) {
nlmsg_free(msg);
return;
}
nla_nest_end(msg, replay_nested);
send_and_recv_msgs(drv, msg, NULL, NULL);
}
static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
const u8 *addr, int qos)
{
/* send data frame to poll STA and check whether
* this frame is ACKed */
struct {
struct ieee80211_hdr hdr;
u16 qos_ctl;
} STRUCT_PACKED nulldata;
size_t size;
/* Send data frame to poll STA and check whether this frame is ACKed */
os_memset(&nulldata, 0, sizeof(nulldata));
if (qos) {
nulldata.hdr.frame_control =
IEEE80211_FC(WLAN_FC_TYPE_DATA,
WLAN_FC_STYPE_QOS_NULL);
size = sizeof(nulldata);
} else {
nulldata.hdr.frame_control =
IEEE80211_FC(WLAN_FC_TYPE_DATA,
WLAN_FC_STYPE_NULLFUNC);
size = sizeof(struct ieee80211_hdr);
}
nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
0, 0) < 0)
wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
"send poll frame");
}
static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
int qos)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
if (!drv->poll_command_supported) {
nl80211_send_null_frame(bss, own_addr, addr, qos);
return;
}
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
nlmsg_free(msg);
return;
}
send_and_recv_msgs(drv, msg, NULL, NULL);
}
static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
{
struct nl_msg *msg;
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
nla_put_u32(msg, NL80211_ATTR_PS_STATE,
enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
nlmsg_free(msg);
return -ENOBUFS;
}
return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
}
static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
int ctwindow)
{
struct i802_bss *bss = priv;
wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
"opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
if (opp_ps != -1 || ctwindow != -1) {
#ifdef ANDROID_P2P
wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
#else /* ANDROID_P2P */
return -1; /* Not yet supported */
#endif /* ANDROID_P2P */
}
if (legacy_ps == -1)
return 0;
if (legacy_ps != 0 && legacy_ps != 1)
return -1; /* Not yet supported */
return nl80211_set_power_save(bss, legacy_ps);
}
static int nl80211_start_radar_detection(void *priv,
struct hostapd_freq_params *freq)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: Start radar detection (CAC) %d MHz (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
freq->freq, freq->ht_enabled, freq->vht_enabled,
freq->bandwidth, freq->center_freq1, freq->center_freq2);
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
"detection");
return -1;
}
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
nl80211_put_freq_params(msg, freq) < 0) {
nlmsg_free(msg);
return -1;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret == 0)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
"%d (%s)", ret, strerror(-ret));
return -1;
}
#ifdef CONFIG_TDLS
static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
u8 dialog_token, u16 status_code,
u32 peer_capab, int initiator, const u8 *buf,
size_t len)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
return -EOPNOTSUPP;
if (!dst)
return -EINVAL;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
goto fail;
if (peer_capab) {
/*
* The internal enum tdls_peer_capability definition is
* currently identical with the nl80211 enum
* nl80211_tdls_peer_capability, so no conversion is needed
* here.
*/
if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
peer_capab))
goto fail;
}
if ((initiator &&
nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
nla_put(msg, NL80211_ATTR_IE, len, buf))
goto fail;
return send_and_recv_msgs(drv, msg, NULL, NULL);
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
enum nl80211_tdls_operation nl80211_oper;
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
return -EOPNOTSUPP;
switch (oper) {
case TDLS_DISCOVERY_REQ:
nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
break;
case TDLS_SETUP:
nl80211_oper = NL80211_TDLS_SETUP;
break;
case TDLS_TEARDOWN:
nl80211_oper = NL80211_TDLS_TEARDOWN;
break;
case TDLS_ENABLE_LINK:
nl80211_oper = NL80211_TDLS_ENABLE_LINK;
break;
case TDLS_DISABLE_LINK:
nl80211_oper = NL80211_TDLS_DISABLE_LINK;
break;
case TDLS_ENABLE:
return 0;
case TDLS_DISABLE:
return 0;
default:
return -EINVAL;
}
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
nlmsg_free(msg);
return -ENOBUFS;
}
return send_and_recv_msgs(drv, msg, NULL, NULL);
}
#endif /* CONFIG TDLS */
static int driver_nl80211_set_key(const char *ifname, void *priv,
enum wpa_alg alg, const u8 *addr,
int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
set_tx, seq, seq_len, key, key_len);
}
static int driver_nl80211_scan2(void *priv,
struct wpa_driver_scan_params *params)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_scan(bss, params);
}
static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
int reason_code)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
}
static int driver_nl80211_authenticate(void *priv,
struct wpa_driver_auth_params *params)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_authenticate(bss, params);
}
static void driver_nl80211_deinit(void *priv)
{
struct i802_bss *bss = priv;
wpa_driver_nl80211_deinit(bss);
}
static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
const char *ifname)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_if_remove(bss, type, ifname);
}
static int driver_nl80211_send_mlme(void *priv, const u8 *data,
size_t data_len, int noack)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
0, 0, 0, 0);
}
static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
}
static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
const char *ifname, int vlan_id)
{
struct i802_bss *bss = priv;
return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
}
static int driver_nl80211_read_sta_data(void *priv,
struct hostap_sta_driver_data *data,
const u8 *addr)
{
struct i802_bss *bss = priv;
return i802_read_sta_data(bss, data, addr);
}
static int driver_nl80211_send_action(void *priv, unsigned int freq,
unsigned int wait_time,
const u8 *dst, const u8 *src,
const u8 *bssid,
const u8 *data, size_t data_len,
int no_cck)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
bssid, data, data_len, no_cck);
}
static int driver_nl80211_probe_req_report(void *priv, int report)
{
struct i802_bss *bss = priv;
return wpa_driver_nl80211_probe_req_report(bss, report);
}
static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
const u8 *ies, size_t ies_len)
{
int ret;
struct nl_msg *msg;
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
u16 mdid = WPA_GET_LE16(md);
wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
"err=%d (%s)", ret, strerror(-ret));
}
return ret;
}
const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
return NULL;
return bss->addr;
}
static const char * scan_state_str(enum scan_states scan_state)
{
switch (scan_state) {
case NO_SCAN:
return "NO_SCAN";
case SCAN_REQUESTED:
return "SCAN_REQUESTED";
case SCAN_STARTED:
return "SCAN_STARTED";
case SCAN_COMPLETED:
return "SCAN_COMPLETED";
case SCAN_ABORTED:
return "SCAN_ABORTED";
case SCHED_SCAN_STARTED:
return "SCHED_SCAN_STARTED";
case SCHED_SCAN_STOPPED:
return "SCHED_SCAN_STOPPED";
case SCHED_SCAN_RESULTS:
return "SCHED_SCAN_RESULTS";
}
return "??";
}
static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int res;
char *pos, *end;
pos = buf;
end = buf + buflen;
res = os_snprintf(pos, end - pos,
"ifindex=%d\n"
"ifname=%s\n"
"brname=%s\n"
"addr=" MACSTR "\n"
"freq=%d\n"
"%s%s%s%s%s",
bss->ifindex,
bss->ifname,
bss->brname,
MAC2STR(bss->addr),
bss->freq,
bss->beacon_set ? "beacon_set=1\n" : "",
bss->added_if_into_bridge ?
"added_if_into_bridge=1\n" : "",
bss->added_bridge ? "added_bridge=1\n" : "",
bss->in_deinit ? "in_deinit=1\n" : "",
bss->if_dynamic ? "if_dynamic=1\n" : "");
if (os_snprintf_error(end - pos, res))
return pos - buf;
pos += res;
if (bss->wdev_id_set) {
res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
(unsigned long long) bss->wdev_id);
if (os_snprintf_error(end - pos, res))
return pos - buf;
pos += res;
}
res = os_snprintf(pos, end - pos,
"phyname=%s\n"
"perm_addr=" MACSTR "\n"
"drv_ifindex=%d\n"
"operstate=%d\n"
"scan_state=%s\n"
"auth_bssid=" MACSTR "\n"
"auth_attempt_bssid=" MACSTR "\n"
"bssid=" MACSTR "\n"
"prev_bssid=" MACSTR "\n"
"associated=%d\n"
"assoc_freq=%u\n"
"monitor_sock=%d\n"
"monitor_ifidx=%d\n"
"monitor_refcount=%d\n"
"last_mgmt_freq=%u\n"
"eapol_tx_sock=%d\n"
"%s%s%s%s%s%s%s%s%s%s%s%s%s",
drv->phyname,
MAC2STR(drv->perm_addr),
drv->ifindex,
drv->operstate,
scan_state_str(drv->scan_state),
MAC2STR(drv->auth_bssid),
MAC2STR(drv->auth_attempt_bssid),
MAC2STR(drv->bssid),
MAC2STR(drv->prev_bssid),
drv->associated,
drv->assoc_freq,
drv->monitor_sock,
drv->monitor_ifidx,
drv->monitor_refcount,
drv->last_mgmt_freq,
drv->eapol_tx_sock,
drv->ignore_if_down_event ?
"ignore_if_down_event=1\n" : "",
drv->scan_complete_events ?
"scan_complete_events=1\n" : "",
drv->disabled_11b_rates ?
"disabled_11b_rates=1\n" : "",
drv->pending_remain_on_chan ?
"pending_remain_on_chan=1\n" : "",
drv->in_interface_list ? "in_interface_list=1\n" : "",
drv->device_ap_sme ? "device_ap_sme=1\n" : "",
drv->poll_command_supported ?
"poll_command_supported=1\n" : "",
drv->data_tx_status ? "data_tx_status=1\n" : "",
drv->scan_for_auth ? "scan_for_auth=1\n" : "",
drv->retry_auth ? "retry_auth=1\n" : "",
drv->use_monitor ? "use_monitor=1\n" : "",
drv->ignore_next_local_disconnect ?
"ignore_next_local_disconnect=1\n" : "",
drv->ignore_next_local_deauth ?
"ignore_next_local_deauth=1\n" : "");
if (os_snprintf_error(end - pos, res))
return pos - buf;
pos += res;
if (drv->has_capability) {
res = os_snprintf(pos, end - pos,
"capa.key_mgmt=0x%x\n"
"capa.enc=0x%x\n"
"capa.auth=0x%x\n"
"capa.flags=0x%llx\n"
"capa.rrm_flags=0x%x\n"
"capa.max_scan_ssids=%d\n"
"capa.max_sched_scan_ssids=%d\n"
"capa.sched_scan_supported=%d\n"
"capa.max_match_sets=%d\n"
"capa.max_remain_on_chan=%u\n"
"capa.max_stations=%u\n"
"capa.probe_resp_offloads=0x%x\n"
"capa.max_acl_mac_addrs=%u\n"
"capa.num_multichan_concurrent=%u\n",
drv->capa.key_mgmt,
drv->capa.enc,
drv->capa.auth,
(unsigned long long) drv->capa.flags,
drv->capa.rrm_flags,
drv->capa.max_scan_ssids,
drv->capa.max_sched_scan_ssids,
drv->capa.sched_scan_supported,
drv->capa.max_match_sets,
drv->capa.max_remain_on_chan,
drv->capa.max_stations,
drv->capa.probe_resp_offloads,
drv->capa.max_acl_mac_addrs,
drv->capa.num_multichan_concurrent);
if (os_snprintf_error(end - pos, res))
return pos - buf;
pos += res;
}
return pos - buf;
}
static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
{
if ((settings->head &&
nla_put(msg, NL80211_ATTR_BEACON_HEAD,
settings->head_len, settings->head)) ||
(settings->tail &&
nla_put(msg, NL80211_ATTR_BEACON_TAIL,
settings->tail_len, settings->tail)) ||
(settings->beacon_ies &&
nla_put(msg, NL80211_ATTR_IE,
settings->beacon_ies_len, settings->beacon_ies)) ||
(settings->proberesp_ies &&
nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
settings->proberesp_ies_len, settings->proberesp_ies)) ||
(settings->assocresp_ies &&
nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
settings->assocresp_ies_len, settings->assocresp_ies)) ||
(settings->probe_resp &&
nla_put(msg, NL80211_ATTR_PROBE_RESP,
settings->probe_resp_len, settings->probe_resp)))
return -ENOBUFS;
return 0;
}
static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
{
struct nl_msg *msg;
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nlattr *beacon_csa;
int ret = -ENOBUFS;
wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
settings->cs_count, settings->block_tx,
settings->freq_params.freq, settings->freq_params.bandwidth,
settings->freq_params.center_freq1,
settings->freq_params.center_freq2);
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
return -EOPNOTSUPP;
}
if ((drv->nlmode != NL80211_IFTYPE_AP) &&
(drv->nlmode != NL80211_IFTYPE_P2P_GO))
return -EOPNOTSUPP;
/* check settings validity */
if (!settings->beacon_csa.tail ||
((settings->beacon_csa.tail_len <=
settings->counter_offset_beacon) ||
(settings->beacon_csa.tail[settings->counter_offset_beacon] !=
settings->cs_count)))
return -EINVAL;
if (settings->beacon_csa.probe_resp &&
((settings->beacon_csa.probe_resp_len <=
settings->counter_offset_presp) ||
(settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
settings->cs_count)))
return -EINVAL;
if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
settings->cs_count) ||
(ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
(settings->block_tx &&
nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
goto error;
/* beacon_after params */
ret = set_beacon_data(msg, &settings->beacon_after);
if (ret)
goto error;
/* beacon_csa params */
beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
if (!beacon_csa)
goto fail;
ret = set_beacon_data(msg, &settings->beacon_csa);
if (ret)
goto error;
if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
settings->counter_offset_beacon) ||
(settings->beacon_csa.probe_resp &&
nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
settings->counter_offset_presp)))
goto fail;
nla_nest_end(msg, beacon_csa);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
ret, strerror(-ret));
}
return ret;
fail:
ret = -ENOBUFS;
error:
nlmsg_free(msg);
wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
return ret;
}
static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
u8 user_priority, u16 admitted_time)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG,
"nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
tsid, admitted_time, user_priority);
if (!is_sta_interface(drv->nlmode))
return -ENOTSUP;
msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
if (!msg ||
nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
ret, strerror(-ret));
return ret;
}
static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
if (!is_sta_interface(drv->nlmode))
return -ENOTSUP;
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
ret, strerror(-ret));
return ret;
}
#ifdef CONFIG_TESTING_OPTIONS
static int cmd_reply_handler(struct nl_msg *msg, void *arg)
{
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wpabuf *buf = arg;
if (!buf)
return NL_SKIP;
if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
return NL_SKIP;
}
wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0));
return NL_SKIP;
}
#endif /* CONFIG_TESTING_OPTIONS */
static int vendor_reply_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct nlattr *nl_vendor_reply, *nl;
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wpabuf *buf = arg;
int rem;
if (!buf)
return NL_SKIP;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
if (!nl_vendor_reply)
return NL_SKIP;
if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
return NL_SKIP;
}
nla_for_each_nested(nl, nl_vendor_reply, rem) {
wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
}
return NL_SKIP;
}
static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
unsigned int subcmd, const u8 *data,
size_t data_len, struct wpabuf *buf)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
#ifdef CONFIG_TESTING_OPTIONS
if (vendor_id == 0xffffffff) {
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
nl80211_cmd(drv, msg, 0, subcmd);
if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
0)
goto fail;
ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
ret);
return ret;
}
#endif /* CONFIG_TESTING_OPTIONS */
if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
(data &&
nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
goto fail;
ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
ret);
return ret;
fail:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
u8 qos_map_set_len)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
qos_map_set, qos_map_set_len);
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
return ret;
}
static int nl80211_set_wowlan(void *priv,
const struct wowlan_triggers *triggers)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *wowlan_triggers;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
!(wowlan_triggers = nla_nest_start(msg,
NL80211_ATTR_WOWLAN_TRIGGERS)) ||
(triggers->any &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
(triggers->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
(triggers->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
(triggers->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
(triggers->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
(triggers->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
(triggers->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
nlmsg_free(msg);
return -ENOBUFS;
}
nla_nest_end(msg, wowlan_triggers);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret)
wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
return ret;
}
static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *params;
wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
if (!drv->roaming_vendor_cmd_avail) {
wpa_printf(MSG_DEBUG,
"nl80211: Ignore roaming policy change since driver does not provide command for setting it");
return -1;
}
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
!(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
QCA_ROAMING_NOT_ALLOWED) ||
(bssid &&
nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
nlmsg_free(msg);
return -1;
}
nla_nest_end(msg, params);
return send_and_recv_msgs(drv, msg, NULL, NULL);
}
static int nl80211_set_mac_addr(void *priv, const u8 *addr)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int new_addr = addr != NULL;
if (!addr)
addr = drv->perm_addr;
if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
return -1;
if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
{
wpa_printf(MSG_DEBUG,
"nl80211: failed to set_mac_addr for %s to " MACSTR,
bss->ifname, MAC2STR(addr));
if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
1) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Could not restore interface UP after failed set_mac_addr");
}
return -1;
}
wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
bss->ifname, MAC2STR(addr));
drv->addr_changed = new_addr;
os_memcpy(bss->addr, addr, ETH_ALEN);
if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
{
wpa_printf(MSG_DEBUG,
"nl80211: Could not restore interface UP after set_mac_addr");
}
return 0;
}
#ifdef CONFIG_MESH
static int wpa_driver_nl80211_init_mesh(void *priv)
{
if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
wpa_printf(MSG_INFO,
"nl80211: Failed to set interface into mesh mode");
return -1;
}
return 0;
}
static int
wpa_driver_nl80211_join_mesh(void *priv,
struct wpa_driver_mesh_join_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *container;
int ret = 0;
wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
if (!msg)
goto fail;
if (params->freq) {
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
goto fail;
}
if (params->ht_mode) {
unsigned int ht_value;
char *ht_mode = "";
switch (params->ht_mode) {
default:
case CHAN_NO_HT:
ht_value = NL80211_CHAN_NO_HT;
ht_mode = "NOHT";
break;
case CHAN_HT20:
ht_value = NL80211_CHAN_HT20;
ht_mode = "HT20";
break;
case CHAN_HT40PLUS:
ht_value = NL80211_CHAN_HT40PLUS;
ht_mode = "HT40+";
break;
case CHAN_HT40MINUS:
ht_value = NL80211_CHAN_HT40MINUS;
ht_mode = "HT40-";
break;
}
wpa_printf(MSG_DEBUG, " * ht_mode=%s", ht_mode);
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value))
goto fail;
}
if (params->basic_rates) {
u8 rates[NL80211_MAX_SUPP_RATES];
u8 rates_len = 0;
int i;
for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
if (params->basic_rates[i] < 0)
break;
rates[rates_len++] = params->basic_rates[i] / 5;
}
if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
rates))
goto fail;
}
if (params->meshid) {
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->meshid, params->meshid_len);
if (nla_put(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
params->meshid))
goto fail;
}
wpa_printf(MSG_DEBUG, " * flags=%08X", params->flags);
container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
if (!container)
goto fail;
if (params->ies) {
wpa_hexdump(MSG_DEBUG, " * IEs", params->ies, params->ie_len);
if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
params->ies))
goto fail;
}
/* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
goto fail;
}
if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
goto fail;
if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
goto fail;
nla_nest_end(msg, container);
container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
if (!container)
goto fail;
if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
goto fail;
nla_nest_end(msg, container);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
ret, strerror(-ret));
goto fail;
}
ret = 0;
bss->freq = params->freq;
wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
fail:
nlmsg_free(msg);
return ret;
}
static int wpa_driver_nl80211_leave_mesh(void *priv)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret;
wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
ret, strerror(-ret));
} else {
wpa_printf(MSG_DEBUG,
"nl80211: mesh leave request send successfully");
}
if (wpa_driver_nl80211_set_mode(drv->first_bss,
NL80211_IFTYPE_STATION)) {
wpa_printf(MSG_INFO,
"nl80211: Failed to set interface into station mode");
}
return ret;
}
#endif /* CONFIG_MESH */
static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
const u8 *ipaddr, int prefixlen,
const u8 *addr)
{
#ifdef CONFIG_LIBNL3_ROUTE
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct rtnl_neigh *rn;
struct nl_addr *nl_ipaddr = NULL;
struct nl_addr *nl_lladdr = NULL;
int family, addrsize;
int res;
if (!ipaddr || prefixlen == 0 || !addr)
return -EINVAL;
if (bss->br_ifindex == 0) {
wpa_printf(MSG_DEBUG,
"nl80211: bridge must be set before adding an ip neigh to it");
return -1;
}
if (!drv->rtnl_sk) {
wpa_printf(MSG_DEBUG,
"nl80211: nl_sock for NETLINK_ROUTE is not initialized");
return -1;
}
if (version == 4) {
family = AF_INET;
addrsize = 4;
} else if (version == 6) {
family = AF_INET6;
addrsize = 16;
} else {
return -EINVAL;
}
rn = rtnl_neigh_alloc();
if (rn == NULL)
return -ENOMEM;
/* set the destination ip address for neigh */
nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
if (nl_ipaddr == NULL) {
wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
res = -ENOMEM;
goto errout;
}
nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
res = rtnl_neigh_set_dst(rn, nl_ipaddr);
if (res) {
wpa_printf(MSG_DEBUG,
"nl80211: neigh set destination addr failed");
goto errout;
}
/* set the corresponding lladdr for neigh */
nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
if (nl_lladdr == NULL) {
wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
res = -ENOMEM;
goto errout;
}
rtnl_neigh_set_lladdr(rn, nl_lladdr);
rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
rtnl_neigh_set_state(rn, NUD_PERMANENT);
res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
if (res) {
wpa_printf(MSG_DEBUG,
"nl80211: Adding bridge ip neigh failed: %s",
strerror(errno));
}
errout:
if (nl_lladdr)
nl_addr_put(nl_lladdr);
if (nl_ipaddr)
nl_addr_put(nl_ipaddr);
if (rn)
rtnl_neigh_put(rn);
return res;
#else /* CONFIG_LIBNL3_ROUTE */
return -1;
#endif /* CONFIG_LIBNL3_ROUTE */
}
static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
const u8 *ipaddr)
{
#ifdef CONFIG_LIBNL3_ROUTE
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct rtnl_neigh *rn;
struct nl_addr *nl_ipaddr;
int family, addrsize;
int res;
if (!ipaddr)
return -EINVAL;
if (version == 4) {
family = AF_INET;
addrsize = 4;
} else if (version == 6) {
family = AF_INET6;
addrsize = 16;
} else {
return -EINVAL;
}
if (bss->br_ifindex == 0) {
wpa_printf(MSG_DEBUG,
"nl80211: bridge must be set to delete an ip neigh");
return -1;
}
if (!drv->rtnl_sk) {
wpa_printf(MSG_DEBUG,
"nl80211: nl_sock for NETLINK_ROUTE is not initialized");
return -1;
}
rn = rtnl_neigh_alloc();
if (rn == NULL)
return -ENOMEM;
/* set the destination ip address for neigh */
nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
if (nl_ipaddr == NULL) {
wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
res = -ENOMEM;
goto errout;
}
res = rtnl_neigh_set_dst(rn, nl_ipaddr);
if (res) {
wpa_printf(MSG_DEBUG,
"nl80211: neigh set destination addr failed");
goto errout;
}
rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
if (res) {
wpa_printf(MSG_DEBUG,
"nl80211: Deleting bridge ip neigh failed: %s",
strerror(errno));
}
errout:
if (nl_ipaddr)
nl_addr_put(nl_ipaddr);
if (rn)
rtnl_neigh_put(rn);
return res;
#else /* CONFIG_LIBNL3_ROUTE */
return -1;
#endif /* CONFIG_LIBNL3_ROUTE */
}
static int linux_write_system_file(const char *path, unsigned int val)
{
char buf[50];
int fd, len;
len = os_snprintf(buf, sizeof(buf), "%u\n", val);
if (os_snprintf_error(sizeof(buf), len))
return -1;
fd = open(path, O_WRONLY);
if (fd < 0)
return -1;
if (write(fd, buf, len) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Failed to write Linux system file: %s with the value of %d",
path, val);
close(fd);
return -1;
}
close(fd);
return 0;
}
static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
{
switch (attr) {
case DRV_BR_PORT_ATTR_PROXYARP:
return "proxyarp";
case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
return "hairpin_mode";
}
return NULL;
}
static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
unsigned int val)
{
struct i802_bss *bss = priv;
char path[128];
const char *attr_txt;
attr_txt = drv_br_port_attr_str(attr);
if (attr_txt == NULL)
return -EINVAL;
os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
bss->ifname, attr_txt);
if (linux_write_system_file(path, val))
return -1;
return 0;
}
static const char * drv_br_net_param_str(enum drv_br_net_param param)
{
switch (param) {
case DRV_BR_NET_PARAM_GARP_ACCEPT:
return "arp_accept";
}
return NULL;
}
static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
unsigned int val)
{
struct i802_bss *bss = priv;
char path[128];
const char *param_txt;
int ip_version = 4;
param_txt = drv_br_net_param_str(param);
if (param_txt == NULL)
return -EINVAL;
switch (param) {
case DRV_BR_NET_PARAM_GARP_ACCEPT:
ip_version = 4;
break;
default:
return -EINVAL;
}
os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
ip_version, bss->brname, param_txt);
if (linux_write_system_file(path, val))
return -1;
return 0;
}
static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
{
switch (hw_mode) {
case HOSTAPD_MODE_IEEE80211B:
return QCA_ACS_MODE_IEEE80211B;
case HOSTAPD_MODE_IEEE80211G:
return QCA_ACS_MODE_IEEE80211G;
case HOSTAPD_MODE_IEEE80211A:
return QCA_ACS_MODE_IEEE80211A;
case HOSTAPD_MODE_IEEE80211AD:
return QCA_ACS_MODE_IEEE80211AD;
default:
return -1;
}
}
static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
struct nlattr *data;
int ret;
int mode;
mode = hw_mode_to_qca_acs(params->hw_mode);
if (mode < 0)
return -1;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
!(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
(params->ht_enabled &&
nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
(params->ht40_enabled &&
nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
nlmsg_free(msg);
return -ENOBUFS;
}
nla_nest_end(msg, data);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG,
"nl80211: Failed to invoke driver ACS function: %s",
strerror(errno));
}
return ret;
}
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.name = "nl80211",
.desc = "Linux nl80211/cfg80211",
.get_bssid = wpa_driver_nl80211_get_bssid,
.get_ssid = wpa_driver_nl80211_get_ssid,
.set_key = driver_nl80211_set_key,
.scan2 = driver_nl80211_scan2,
.sched_scan = wpa_driver_nl80211_sched_scan,
.stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
.get_scan_results2 = wpa_driver_nl80211_get_scan_results,
.deauthenticate = driver_nl80211_deauthenticate,
.authenticate = driver_nl80211_authenticate,
.associate = wpa_driver_nl80211_associate,
.global_init = nl80211_global_init,
.global_deinit = nl80211_global_deinit,
.init2 = wpa_driver_nl80211_init,
.deinit = driver_nl80211_deinit,
.get_capa = wpa_driver_nl80211_get_capa,
.set_operstate = wpa_driver_nl80211_set_operstate,
.set_supp_port = wpa_driver_nl80211_set_supp_port,
.set_country = wpa_driver_nl80211_set_country,
.get_country = wpa_driver_nl80211_get_country,
.set_ap = wpa_driver_nl80211_set_ap,
.set_acl = wpa_driver_nl80211_set_acl,
.if_add = wpa_driver_nl80211_if_add,
.if_remove = driver_nl80211_if_remove,
.send_mlme = driver_nl80211_send_mlme,
.get_hw_feature_data = nl80211_get_hw_feature_data,
.sta_add = wpa_driver_nl80211_sta_add,
.sta_remove = driver_nl80211_sta_remove,
.hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
.sta_set_flags = wpa_driver_nl80211_sta_set_flags,
.hapd_init = i802_init,
.hapd_deinit = i802_deinit,
.set_wds_sta = i802_set_wds_sta,
.get_seqnum = i802_get_seqnum,
.flush = i802_flush,
.get_inact_sec = i802_get_inact_sec,
.sta_clear_stats = i802_sta_clear_stats,
.set_rts = i802_set_rts,
.set_frag = i802_set_frag,
.set_tx_queue_params = i802_set_tx_queue_params,
.set_sta_vlan = driver_nl80211_set_sta_vlan,
.sta_deauth = i802_sta_deauth,
.sta_disassoc = i802_sta_disassoc,
.read_sta_data = driver_nl80211_read_sta_data,
.set_freq = i802_set_freq,
.send_action = driver_nl80211_send_action,
.send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
.remain_on_channel = wpa_driver_nl80211_remain_on_channel,
.cancel_remain_on_channel =
wpa_driver_nl80211_cancel_remain_on_channel,
.probe_req_report = driver_nl80211_probe_req_report,
.deinit_ap = wpa_driver_nl80211_deinit_ap,
.deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
.resume = wpa_driver_nl80211_resume,
.signal_monitor = nl80211_signal_monitor,
.signal_poll = nl80211_signal_poll,
.send_frame = nl80211_send_frame,
.shared_freq = wpa_driver_nl80211_shared_freq,
.set_param = nl80211_set_param,
.get_radio_name = nl80211_get_radio_name,
.add_pmkid = nl80211_add_pmkid,
.remove_pmkid = nl80211_remove_pmkid,
.flush_pmkid = nl80211_flush_pmkid,
.set_rekey_info = nl80211_set_rekey_info,
.poll_client = nl80211_poll_client,
.set_p2p_powersave = nl80211_set_p2p_powersave,
.start_dfs_cac = nl80211_start_radar_detection,
.stop_ap = wpa_driver_nl80211_stop_ap,
#ifdef CONFIG_TDLS
.send_tdls_mgmt = nl80211_send_tdls_mgmt,
.tdls_oper = nl80211_tdls_oper,
#endif /* CONFIG_TDLS */
.update_ft_ies = wpa_driver_nl80211_update_ft_ies,
.get_mac_addr = wpa_driver_nl80211_get_macaddr,
.get_survey = wpa_driver_nl80211_get_survey,
.status = wpa_driver_nl80211_status,
.switch_channel = nl80211_switch_channel,
#ifdef ANDROID_P2P
.set_noa = wpa_driver_set_p2p_noa,
.get_noa = wpa_driver_get_p2p_noa,
.set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
#endif /* ANDROID_P2P */
#ifdef ANDROID
.driver_cmd = wpa_driver_nl80211_driver_cmd,
#endif /* ANDROID */
.vendor_cmd = nl80211_vendor_cmd,
.set_qos_map = nl80211_set_qos_map,
.set_wowlan = nl80211_set_wowlan,
.roaming = nl80211_roaming,
.set_mac_addr = nl80211_set_mac_addr,
#ifdef CONFIG_MESH
.init_mesh = wpa_driver_nl80211_init_mesh,
.join_mesh = wpa_driver_nl80211_join_mesh,
.leave_mesh = wpa_driver_nl80211_leave_mesh,
#endif /* CONFIG_MESH */
.br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
.br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
.br_port_set_attr = wpa_driver_br_port_set_attr,
.br_set_net_param = wpa_driver_br_set_net_param,
.add_tx_ts = nl80211_add_ts,
.del_tx_ts = nl80211_del_ts,
.do_acs = wpa_driver_do_acs,
};
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