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nl80211: Subscribe to spurious class3 frame events

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These events are necessary to send deauth frames to
stations sending spurious data frames. Subscribe to
them on the per-BSS event socket.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2011-12-06 18:29:45 +02:00 committed by Jouni Malinen
parent a11241fa11
commit 02bb32c393
1 changed files with 57 additions and 0 deletions
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57
src/drivers/driver_nl80211.c
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@ -1758,6 +1758,28 @@ static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
}
static void nl80211_spurious_class3_frame(struct i802_bss *bss,
struct nlattr **tb)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
union wpa_event_data event;
u8 bssid[ETH_ALEN];
if (!tb[NL80211_ATTR_MAC])
return;
if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, bssid) <
0)
return;
os_memset(&event, 0, sizeof(event));
event.rx_from_unknown.bssid = bssid;
event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
}
static int process_drv_event(struct nl_msg *msg, void *arg)
{
struct wpa_driver_nl80211_data *drv = arg;
@ -1909,6 +1931,9 @@ static int process_bss_event(struct nl_msg *msg, void *arg)
tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
tb[NL80211_ATTR_COOKIE]);
break;
case NL80211_CMD_UNEXPECTED_FRAME:
nl80211_spurious_class3_frame(bss, tb);
break;
default:
wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", gnlh->cmd);
@ -2691,6 +2716,35 @@ static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
}
static int nl80211_register_spurious_class3(struct i802_bss *bss)
{
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret = -1;
msg = nlmsg_alloc();
if (!msg)
return -1;
nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
ret = send_and_recv(drv, bss->nl_mgmt.handle, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
"failed: ret=%d (%s)",
ret, strerror(-ret));
goto nla_put_failure;
}
ret = 0;
nla_put_failure:
nlmsg_free(msg);
return ret;
}
static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
{
static const int stypes[] = {
@ -2722,6 +2776,9 @@ static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
}
}
if (nl80211_register_spurious_class3(bss))
goto out_err;
return 0;
out_err: