nl80211: Subscribe to spurious class3 frame events
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>
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1 changed files with 57 additions and 0 deletions
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@ -1758,6 +1758,28 @@ static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
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}
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static void nl80211_spurious_class3_frame(struct i802_bss *bss,
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struct nlattr **tb)
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{
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struct wpa_driver_nl80211_data *drv = bss->drv;
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union wpa_event_data event;
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u8 bssid[ETH_ALEN];
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if (!tb[NL80211_ATTR_MAC])
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return;
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if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, bssid) <
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0)
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return;
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os_memset(&event, 0, sizeof(event));
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event.rx_from_unknown.bssid = bssid;
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event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
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wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
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}
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static int process_drv_event(struct nl_msg *msg, void *arg)
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{
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struct wpa_driver_nl80211_data *drv = arg;
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@ -1909,6 +1931,9 @@ static int process_bss_event(struct nl_msg *msg, void *arg)
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tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
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tb[NL80211_ATTR_COOKIE]);
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break;
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case NL80211_CMD_UNEXPECTED_FRAME:
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nl80211_spurious_class3_frame(bss, tb);
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break;
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default:
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wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
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"(cmd=%d)", gnlh->cmd);
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@ -2691,6 +2716,35 @@ static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
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}
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static int nl80211_register_spurious_class3(struct i802_bss *bss)
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{
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struct wpa_driver_nl80211_data *drv = bss->drv;
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struct nl_msg *msg;
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int ret = -1;
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msg = nlmsg_alloc();
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if (!msg)
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return -1;
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nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
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ret = send_and_recv(drv, bss->nl_mgmt.handle, msg, NULL, NULL);
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msg = NULL;
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if (ret) {
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wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
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"failed: ret=%d (%s)",
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ret, strerror(-ret));
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goto nla_put_failure;
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}
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ret = 0;
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nla_put_failure:
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nlmsg_free(msg);
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return ret;
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}
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static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
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{
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static const int stypes[] = {
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@ -2722,6 +2776,9 @@ static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
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}
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}
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if (nl80211_register_spurious_class3(bss))
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goto out_err;
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return 0;
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out_err:
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