nl80211: Include linux/rtnetlink.h explicitly
[libeap.git] / src / drivers / driver_nl80211.c
index 136ca11..3f91be4 100644 (file)
@@ -22,6 +22,7 @@
 #include <netlink/genl/genl.h>
 #include <netlink/genl/family.h>
 #include <netlink/genl/ctrl.h>
+#include <linux/rtnetlink.h>
 #include <netpacket/packet.h>
 #include <linux/filter.h>
 #include "nl80211_copy.h"
@@ -73,6 +74,7 @@ struct wpa_driver_nl80211_data {
        char brname[IFNAMSIZ];
        int ifindex;
        int if_removed;
+       int if_disabled;
        struct rfkill_data *rfkill;
        struct wpa_driver_capa capa;
        int has_capability;
@@ -103,7 +105,6 @@ struct wpa_driver_nl80211_data {
        int disable_11b_rates;
 
        unsigned int pending_remain_on_chan:1;
-       unsigned int pending_send_action:1;
        unsigned int added_bridge:1;
        unsigned int added_if_into_bridge:1;
 
@@ -413,6 +414,19 @@ static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
                   (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)) {
+               wpa_printf(MSG_DEBUG, "nl80211: Interface down");
+               drv->if_disabled = 1;
+               wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
+       }
+
+       if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
+               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()
@@ -674,10 +688,11 @@ static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
                return;
 
        cookie_val = nla_get_u64(cookie);
-       wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
+       wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
+                  "(ack=%d)",
                   (long long unsigned int) cookie_val,
                   cookie_val == drv->send_action_cookie ?
-                  " (match)" : " (unknown)");
+                  " (match)" : " (unknown)", ack != NULL);
        if (cookie_val != drv->send_action_cookie)
                return;
 
@@ -704,12 +719,28 @@ static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
        const u8 *bssid = NULL;
        u16 reason_code = 0;
 
+       mgmt = (const struct ieee80211_mgmt *) frame;
+       if (len >= 24) {
+               bssid = mgmt->bssid;
+
+               if (drv->associated != 0 &&
+                   os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
+                   os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
+                       /*
+                        * We have presumably received this deauth as a
+                        * response to a clear_state_mismatch() outgoing
+                        * deauth.  Don't let it take us offline!
+                        */
+                       wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
+                                  "from Unknown BSSID " MACSTR " -- ignoring",
+                                  MAC2STR(bssid));
+                       return;
+               }
+       }
+
        drv->associated = 0;
        os_memset(&event, 0, sizeof(event));
 
-       mgmt = (const struct ieee80211_mgmt *) frame;
-       if (len >= 24)
-               bssid = mgmt->bssid;
        /* Note: Same offset for Reason Code in both frame subtypes */
        if (len >= 24 + sizeof(mgmt->u.deauth))
                reason_code = le_to_host16(mgmt->u.deauth.reason_code);
@@ -717,9 +748,19 @@ static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
        if (type == EVENT_DISASSOC) {
                event.disassoc_info.addr = bssid;
                event.disassoc_info.reason_code = reason_code;
+               if (frame + len > mgmt->u.disassoc.variable) {
+                       event.disassoc_info.ie = mgmt->u.disassoc.variable;
+                       event.disassoc_info.ie_len = frame + len -
+                               mgmt->u.disassoc.variable;
+               }
        } else {
                event.deauth_info.addr = bssid;
                event.deauth_info.reason_code = reason_code;
+               if (frame + len > mgmt->u.deauth.variable) {
+                       event.deauth_info.ie = mgmt->u.deauth.variable;
+                       event.deauth_info.ie_len = frame + len -
+                               mgmt->u.deauth.variable;
+               }
        }
 
        wpa_supplicant_event(drv->ctx, type, &event);
@@ -916,6 +957,53 @@ static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 }
 
 
+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 },
+       };
+       int *sig = 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 = (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
+       return NL_SKIP;
+}
+
+
+static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
+                                  int *sig)
+{
+       struct nl_msg *msg;
+
+       *sig = -9999;
+
+       msg = nlmsg_alloc();
+       if (!msg)
+               return -ENOMEM;
+
+       genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+                   0, NL80211_CMD_GET_STATION, 0);
+
+       NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+       NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
+
+       return send_and_recv_msgs(drv, msg, get_link_signal, sig);
+ nla_put_failure:
+       return -ENOBUFS;
+}
+
+
 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
                              struct nlattr *tb[])
 {
@@ -927,6 +1015,7 @@ static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
        struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
        enum nl80211_cqm_rssi_threshold_event event;
        union wpa_event_data ed;
+       int sig, res;
 
        if (tb[NL80211_ATTR_CQM] == NULL ||
            nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
@@ -952,6 +1041,12 @@ static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
        } else
                return;
 
+       res = nl80211_get_link_signal(drv, &sig);
+       if (res == 0) {
+               ed.signal_change.current_signal = sig;
+               wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm", sig);
+       }
+
        wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
 }
 
@@ -1228,6 +1323,7 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
        }
 
        drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
+       drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
        drv->capa.max_remain_on_chan = 5000;
 
        return 0;
@@ -1235,8 +1331,7 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 #endif /* HOSTAPD */
 
 
-static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
-                                     void *ctx)
+static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
 {
        int ret;
 
@@ -1330,7 +1425,7 @@ static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
        }
 
        eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
-                                wpa_driver_nl80211_event_receive, drv, ctx);
+                                wpa_driver_nl80211_event_receive, drv, NULL);
 
        return 0;
 
@@ -1351,9 +1446,11 @@ err1:
 
 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
 {
-       struct wpa_driver_nl80211_data *drv = ctx;
        wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
-       wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
+       /*
+        * This may be for any interface; use ifdown event to disable
+        * interface.
+        */
 }
 
 
@@ -1366,7 +1463,7 @@ static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
                           "after rfkill unblock");
                return;
        }
-       wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
+       /* rtnetlink ifup handler will report interface as enabled */
 }
 
 
@@ -1395,7 +1492,7 @@ static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
        drv->monitor_sock = -1;
        drv->ioctl_sock = -1;
 
-       if (wpa_driver_nl80211_init_nl(drv, ctx)) {
+       if (wpa_driver_nl80211_init_nl(drv)) {
                os_free(drv);
                return NULL;
        }
@@ -1426,8 +1523,10 @@ static void * wpa_driver_nl80211_init(void *ctx, const char *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)
+       if (drv->rfkill == NULL) {
                wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
+               os_free(rcfg);
+       }
 
        if (wpa_driver_nl80211_finish_drv_init(drv))
                goto failed;
@@ -1485,6 +1584,31 @@ nla_put_failure:
 
 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
 {
+#ifdef CONFIG_P2P
+       /* GAS Initial Request */
+       if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
+               return -1;
+       /* GAS Initial Response */
+       if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
+               return -1;
+       /* GAS Comeback Request */
+       if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
+               return -1;
+       /* GAS Comeback Response */
+       if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
+               return -1;
+       /* P2P Public Action */
+       if (nl80211_register_action_frame(drv,
+                                         (u8 *) "\x04\x09\x50\x6f\x9a\x09",
+                                         6) < 0)
+               return -1;
+       /* P2P Action */
+       if (nl80211_register_action_frame(drv,
+                                         (u8 *) "\x7f\x50\x6f\x9a\x09",
+                                         5) < 0)
+               return -1;
+#endif /* CONFIG_P2P */
+
        /* FT Action frames */
        if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
                return -1;
@@ -1522,6 +1646,7 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
                        wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
                                   "interface '%s' due to rfkill",
                                   bss->ifname);
+                       drv->if_disabled = 1;
                        send_rfkill_event = 1;
                } else {
                        wpa_printf(MSG_ERROR, "nl80211: Could not set "
@@ -2378,7 +2503,8 @@ nla_put_failure:
 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
                                         const u8 *addr, int reason_code)
 {
-       wpa_printf(MSG_DEBUG, "%s", __func__);
+       wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
+                  __func__, MAC2STR(addr), reason_code);
        drv->associated = 0;
        return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
                                       reason_code, 0);
@@ -2392,7 +2518,8 @@ static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
        struct wpa_driver_nl80211_data *drv = bss->drv;
        if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
                return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
-       wpa_printf(MSG_DEBUG, "%s", __func__);
+       wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
+                  __func__, MAC2STR(addr), reason_code);
        drv->associated = 0;
        return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
                                       reason_code, 0);
@@ -2479,10 +2606,6 @@ retry:
        wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
        if (params->ie)
                NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
-       /*
-        * TODO: if multiple auth_alg options enabled, try them one by one if
-        * the AP rejects authentication due to unknown auth alg
-        */
        if (params->auth_alg & WPA_AUTH_ALG_OPEN)
                type = NL80211_AUTHTYPE_OPEN_SYSTEM;
        else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
@@ -3666,6 +3789,9 @@ static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
                                 struct wpa_driver_associate_params *params)
 {
+       if (params->p2p)
+               wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
+                          "group (GO)");
        if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
            wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
                nl80211_remove_monitor_interface(drv);
@@ -4000,6 +4126,9 @@ static int wpa_driver_nl80211_associate(
                        params->prev_bssid);
        }
 
+       if (params->p2p)
+               wpa_printf(MSG_DEBUG, "  * P2P group");
+
        ret = send_and_recv_msgs(drv, msg, NULL, NULL);
        msg = NULL;
        if (ret) {
@@ -4049,6 +4178,7 @@ static int wpa_driver_nl80211_set_mode(void *priv, int mode)
        struct wpa_driver_nl80211_data *drv = bss->drv;
        int ret = -1;
        int nlmode;
+       int i;
 
        switch (mode) {
        case 0:
@@ -4081,11 +4211,23 @@ static int wpa_driver_nl80211_set_mode(void *priv, int mode)
         * take the device down, try to set the mode again, and bring the
         * device back up.
         */
-       if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
-               /* Try to set the mode again while the interface is down */
-               ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
-               if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
-                       ret = -1;
+       wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
+                  "interface down");
+       for (i = 0; i < 10; i++) {
+               if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
+                   0) {
+                       /* Try to set the mode again while the interface is
+                        * down */
+                       ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
+                       if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
+                                                 1))
+                               ret = -1;
+                       if (!ret)
+                               break;
+               } else
+                       wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
+                                  "interface down");
+               os_sleep(0, 100000);
        }
 
        if (!ret) {
@@ -4886,10 +5028,13 @@ static enum nl80211_iftype wpa_driver_nl80211_if_type(
 {
        switch (type) {
        case WPA_IF_STATION:
+       case WPA_IF_P2P_CLIENT:
+       case WPA_IF_P2P_GROUP:
                return NL80211_IFTYPE_STATION;
        case WPA_IF_AP_VLAN:
                return NL80211_IFTYPE_AP_VLAN;
        case WPA_IF_AP_BSS:
+       case WPA_IF_P2P_GO:
                return NL80211_IFTYPE_AP;
        }
        return -1;
@@ -5059,7 +5204,6 @@ static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
        wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
                   "cookie 0x%llx", (long long unsigned int) cookie);
        drv->send_action_cookie = cookie;
-       drv->pending_send_action = 1;
        ret = 0;
 
 nla_put_failure:
@@ -5099,7 +5243,8 @@ static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
                return 0;
        }
        wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
-                  "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
+                  "(freq=%d duration=%u): %d (%s)",
+                  freq, duration, ret, strerror(-ret));
 nla_put_failure:
        return -1;
 }