RSN IBSS: Restart IBSS state machines for each new IBSS

Change the old design of running a single long living RSN IBSS
instance to keep a separate instance for each IBSS connection.
This fixes number of issues in getting keys set properly for
new connections and is in general quite a bit more correct
design.

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 813fc42..41c5534 100644 (file)
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -113,6 +113,11 @@ void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 {
        int bssid_changed;
 
+#ifdef CONFIG_IBSS_RSN
+       ibss_rsn_deinit(wpa_s->ibss_rsn);
+       wpa_s->ibss_rsn = NULL;
+#endif /* CONFIG_IBSS_RSN */
+
        if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
                return;
 
@@ -1344,8 +1349,18 @@ static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
        if (wpa_s->current_ssid &&
            wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
            wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
-           wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE)
-               ibss_rsn_connected(wpa_s->ibss_rsn);
+           wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
+           wpa_s->ibss_rsn == NULL) {
+               wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
+               if (!wpa_s->ibss_rsn) {
+                       wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
+                       wpa_supplicant_deauthenticate(
+                               wpa_s, WLAN_REASON_DEAUTH_LEAVING);
+                       return;
+               }
+
+               ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
+       }
 #endif /* CONFIG_IBSS_RSN */
 }
 
@@ -1554,7 +1569,8 @@ wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
                l2_packet_deinit(wpa_s->l2);
                wpa_s->l2 = NULL;
 #ifdef CONFIG_IBSS_RSN
-               ibss_rsn_stop(wpa_s->ibss_rsn, NULL);
+               ibss_rsn_deinit(wpa_s->ibss_rsn);
+               wpa_s->ibss_rsn = NULL;
 #endif /* CONFIG_IBSS_RSN */
 #ifdef CONFIG_TERMINATE_ONLASTIF
                /* check if last interface */

diff --git a/wpa_supplicant/ibss_rsn.c b/wpa_supplicant/ibss_rsn.c
index 55ea790..9789d32 100644 (file)
--- a/wpa_supplicant/ibss_rsn.c
+++ b/wpa_supplicant/ibss_rsn.c
@@ -285,15 +285,6 @@ static int auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
                }
        }
 
-       if (ibss_rsn->init_in_progress && key_len <=
-           sizeof(ibss_rsn->init_gtk)) {
-               wpa_printf(MSG_DEBUG, "AUTH: Delay setting of initial TX GTK "
-                          "until RSN IBSS is connected");
-               ibss_rsn->init_gtk_idx = idx;
-               os_memcpy(ibss_rsn->init_gtk, key, key_len);
-               return 0;
-       }
-
        return wpa_drv_set_key(ibss_rsn->wpa_s, alg, addr, idx,
                               1, seq, 6, key, key_len);
 }
@@ -342,9 +333,7 @@ static int ibss_rsn_auth_init_group(struct ibss_rsn *ibss_rsn,
        cb.set_key = auth_set_key;
        cb.for_each_sta = auth_for_each_sta;
 
-       ibss_rsn->init_in_progress = 1;
        ibss_rsn->auth_group = wpa_init(own_addr, &conf, &cb);
-       ibss_rsn->init_in_progress = 0;
        if (ibss_rsn->auth_group == NULL) {
                wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
                return -1;
@@ -389,6 +378,9 @@ int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr)
 {
        struct ibss_rsn_peer *peer;
 
+       if (ibss_rsn == NULL)
+               return -1;
+
        for (peer = ibss_rsn->peers; peer; peer = peer->next) {
                if (os_memcmp(addr, peer->addr, ETH_ALEN) == 0) {
                        wpa_printf(MSG_DEBUG, "RSN: IBSS Authenticator and "
@@ -580,6 +572,9 @@ int ibss_rsn_rx_eapol(struct ibss_rsn *ibss_rsn, const u8 *src_addr,
 {
        struct ibss_rsn_peer *peer;
 
+       if (ibss_rsn == NULL)
+               return -1;
+
        for (peer = ibss_rsn->peers; peer; peer = peer->next) {
                if (os_memcmp(src_addr, peer->addr, ETH_ALEN) == 0)
                        return ibss_rsn_process_rx_eapol(ibss_rsn, peer,
@@ -603,24 +598,7 @@ int ibss_rsn_rx_eapol(struct ibss_rsn *ibss_rsn, const u8 *src_addr,
 
 void ibss_rsn_set_psk(struct ibss_rsn *ibss_rsn, const u8 *psk)
 {
+       if (ibss_rsn == NULL)
+               return;
        os_memcpy(ibss_rsn->psk, psk, PMK_LEN);
 }
-
-
-void ibss_rsn_connected(struct ibss_rsn *ibss_rsn)
-{
-       u8 seq[6];
-       wpa_printf(MSG_DEBUG, "RSN: IBSS connected notification");
-       if (ibss_rsn->init_gtk_idx) {
-               wpa_printf(MSG_DEBUG, "RSN: Set initial IBSS TX GTK");
-               os_memset(seq, 0, sizeof(seq));
-               if (wpa_drv_set_key(ibss_rsn->wpa_s, WPA_ALG_CCMP,
-                                   broadcast_ether_addr,
-                                   ibss_rsn->init_gtk_idx,
-                                   1, seq, sizeof(seq), ibss_rsn->init_gtk,
-                                   16) < 0)
-                       wpa_printf(MSG_INFO, "RSN: Failed to set IBSS TX GTK");
-               ibss_rsn->init_gtk_idx = 0;
-               os_memset(ibss_rsn->init_gtk, 0, sizeof(ibss_rsn->init_gtk));
-       }
-}

diff --git a/wpa_supplicant/ibss_rsn.h b/wpa_supplicant/ibss_rsn.h
index 2582073..dbc889f 100644 (file)
--- a/wpa_supplicant/ibss_rsn.h
+++ b/wpa_supplicant/ibss_rsn.h
@@ -36,10 +36,6 @@ struct ibss_rsn {
        struct wpa_authenticator *auth_group;
        struct ibss_rsn_peer *peers;
        u8 psk[PMK_LEN];
-
-       int init_in_progress;
-       int init_gtk_idx;
-       u8 init_gtk[16];
 };
 
 
@@ -50,6 +46,5 @@ void ibss_rsn_stop(struct ibss_rsn *ibss_rsn, const u8 *peermac);
 int ibss_rsn_rx_eapol(struct ibss_rsn *ibss_rsn, const u8 *src_addr,
                      const u8 *buf, size_t len);
 void ibss_rsn_set_psk(struct ibss_rsn *ibss_rsn, const u8 *psk);
-void ibss_rsn_connected(struct ibss_rsn *ibss_rsn);
 
 #endif /* IBSS_RSN_H */

diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index 28b3f0b..83550ef 100644 (file)
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -1077,6 +1077,11 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
        int assoc_failed = 0;
        struct wpa_ssid *old_ssid;
 
+#ifdef CONFIG_IBSS_RSN
+       ibss_rsn_deinit(wpa_s->ibss_rsn);
+       wpa_s->ibss_rsn = NULL;
+#endif /* CONFIG_IBSS_RSN */
+
        if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
            ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 #ifdef CONFIG_AP
@@ -1387,7 +1392,6 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
        } else if (ssid->mode == WPAS_MODE_IBSS &&
                   wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
                   wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
-               ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
                /*
                 * RSN IBSS authentication is per-STA and we can disable the
                 * per-BSSID authentication.
@@ -2272,14 +2276,6 @@ next_driver:
                return -1;
        }
 
-#ifdef CONFIG_IBSS_RSN
-       wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
-       if (!wpa_s->ibss_rsn) {
-               wpa_dbg(wpa_s, MSG_DEBUG, "Failed to init IBSS RSN");
-               return -1;
-       }
-#endif /* CONFIG_IBSS_RSN */
-
 #ifdef CONFIG_P2P
        if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
                wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");