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fragattacks/src/drivers/driver_nl80211.c
Jouni Malinen ce20a3702c nl80211: Remove practically unused process_drv_event() 
This was used in the past, but all the event processing is now either
through process_global_event() or process_bss_event().

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-22 16:12:11 +02:00

8255 lines
216 KiB
C
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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 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 (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)
{
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(bss->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);
}
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;
}
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;
}
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;
if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
params->max_peer_links))
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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