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atheros: Add support for Action frame TX/RX

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This allows hostapd to send and receive various Action frames.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jay Katabathuni 2011-09-08 20:52:23 +03:00 committed by Jouni Malinen
parent 7d9c0cd345
commit e1e3b5bb34
1 changed files with 161 additions and 2 deletions
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159
src/drivers/driver_atheros.c
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@ -13,6 +13,12 @@
#include <net/if.h>
#include <sys/ioctl.h>
#include "common.h"
#include "eloop.h"
#include "common/ieee802_11_defs.h"
#include "l2_packet/l2_packet.h"
#include "p2p/p2p.h"
#include "common.h"
#ifndef _BYTE_ORDER
#ifdef WORDS_BIGENDIAN
@ -1220,6 +1226,92 @@ atheros_wireless_event_wireless_custom(struct atheros_driver_data *drv,
}
}
/*
* Handle size of data problem. WEXT only allows data of 256 bytes for custom
* events, and p2p data can be much bigger. So the athr driver sends a small
* event telling me to collect the big data with an ioctl.
* On the first event, send all pending events to supplicant.
*/
static void fetch_pending_big_events(struct atheros_driver_data *drv)
{
union wpa_event_data event;
const struct ieee80211_mgmt *mgmt;
u8 tbuf[IW_PRIV_SIZE_MASK]; /* max size is 2047 bytes */
u16 fc, stype;
struct iwreq iwr;
size_t data_len;
u32 freq, frame_type;
while (1) {
os_memset(&iwr, 0, sizeof(iwr));
os_strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.data.pointer = (void *) tbuf;
iwr.u.data.length = sizeof(tbuf);
iwr.u.data.flags = IEEE80211_IOC_P2P_FETCH_FRAME;
if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_P2P_BIG_PARAM, &iwr)
< 0) {
if (errno == ENOSPC) {
wpa_printf(MSG_DEBUG, "%s:%d exit",
__func__, __LINE__);
return;
}
wpa_printf(MSG_DEBUG, "athr: %s: P2P_BIG_PARAM["
"P2P_FETCH_FRAME] failed: %s",
__func__, strerror(errno));
return;
}
data_len = iwr.u.data.length;
wpa_hexdump(MSG_DEBUG, "athr: P2P_FETCH_FRAME data",
(u8 *) tbuf, data_len);
if (data_len < sizeof(freq) + sizeof(frame_type) + 24) {
wpa_printf(MSG_DEBUG, "athr: frame too short");
continue;
}
os_memcpy(&freq, tbuf, sizeof(freq));
os_memcpy(&frame_type, &tbuf[sizeof(freq)],
sizeof(frame_type));
mgmt = (void *) &tbuf[sizeof(freq) + sizeof(frame_type)];
data_len -= sizeof(freq) + sizeof(frame_type);
if (frame_type == IEEE80211_EV_RX_MGMT) {
fc = le_to_host16(mgmt->frame_control);
stype = WLAN_FC_GET_STYPE(fc);
wpa_printf(MSG_DEBUG, "athr: EV_RX_MGMT stype=%u "
"freq=%u len=%u", stype, freq, (int) data_len);
if (stype == WLAN_FC_STYPE_ACTION) {
os_memset(&event, 0, sizeof(event));
event.rx_mgmt.frame = (const u8 *) mgmt;
event.rx_mgmt.frame_len = data_len;
wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT,
&event);
continue;
}
} else {
wpa_printf(MSG_DEBUG, "athr: %s unknown type %d",
__func__, frame_type);
continue;
}
}
}
static void
atheros_wireless_event_atheros_custom(struct atheros_driver_data *drv,
int opcode, char *buf, int len)
{
switch (opcode) {
case IEEE80211_EV_RX_MGMT:
wpa_printf(MSG_DEBUG, "WEXT: EV_RX_MGMT");
fetch_pending_big_events(drv);
break;
default:
break;
}
}
static void
atheros_wireless_event_wireless(struct atheros_driver_data *drv,
char *data, int len)
@ -1275,8 +1367,15 @@ atheros_wireless_event_wireless(struct atheros_driver_data *drv,
return; /* XXX */
memcpy(buf, custom, iwe->u.data.length);
buf[iwe->u.data.length] = '\0';
if (iwe->u.data.flags != 0) {
atheros_wireless_event_atheros_custom(
drv, (int) iwe->u.data.flags,
buf, len);
} else {
atheros_wireless_event_wireless_custom(
drv, buf, buf + iwe->u.data.length);
}
free(buf);
break;
}
@ -1710,6 +1809,65 @@ static int atheros_add_sta_node(void *priv, const u8 *addr, u16 auth_alg)
#endif /* CONFIG_IEEE80211R */
/* Use only to set a big param, get will not work. */
static int
set80211big(struct atheros_driver_data *drv, int op, const void *data, int len)
{
struct iwreq iwr;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.data.pointer = (void *) data;
iwr.u.data.length = len;
iwr.u.data.flags = op;
wpa_printf(MSG_DEBUG, "%s: op=0x%x=%d (%s) len=0x%x",
__func__, op, op, athr_get_param_name(op), len);
if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_P2P_BIG_PARAM, &iwr) < 0) {
wpa_printf(MSG_DEBUG, "%s: op=0x%x (%s) subop=0x%x=%d "
"value=0x%x,0x%x failed: %d (%s)",
__func__, op, athr_get_ioctl_name(op), iwr.u.mode,
iwr.u.mode, iwr.u.data.length,
iwr.u.data.flags, errno, strerror(errno));
return -1;
}
return 0;
}
static int atheros_send_action(void *priv, unsigned int freq,
unsigned int wait,
const u8 *dst, const u8 *src,
const u8 *bssid,
const u8 *data, size_t data_len, int no_cck)
{
struct atheros_driver_data *drv = priv;
struct ieee80211_p2p_send_action *act;
int res;
act = os_zalloc(sizeof(*act) + data_len);
if (act == NULL)
return -1;
act->freq = freq;
os_memcpy(act->dst_addr, dst, ETH_ALEN);
os_memcpy(act->src_addr, src, ETH_ALEN);
os_memcpy(act->bssid, bssid, ETH_ALEN);
os_memcpy(act + 1, data, data_len);
wpa_printf(MSG_DEBUG, "%s: freq=%d, wait=%u, dst=" MACSTR ", src="
MACSTR ", bssid=" MACSTR,
__func__, act->freq, wait, MAC2STR(act->dst_addr),
MAC2STR(act->src_addr), MAC2STR(act->bssid));
wpa_hexdump(MSG_MSGDUMP, "athr: act", (u8 *) act, sizeof(*act));
wpa_hexdump(MSG_MSGDUMP, "athr: data", data, data_len);
res = set80211big(drv, IEEE80211_IOC_P2P_SEND_ACTION,
act, sizeof(*act) + data_len);
os_free(act);
return res;
}
const struct wpa_driver_ops wpa_driver_atheros_ops = {
.name = "atheros",
.hapd_init = atheros_init,
@ -1740,4 +1898,5 @@ const struct wpa_driver_ops wpa_driver_atheros_ops = {
.add_tspec = atheros_add_tspec,
.add_sta_node = atheros_add_sta_node,
#endif /* CONFIG_IEEE80211R */
.send_action = atheros_send_action,
};