mesh: Ignore crowded peer

The "Accepting Additional Mesh Peerings bit == 0" means the peer cannot
accept any more peers, so suppress attempt to open a connection to such
a peer.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>

diff --git a/src/common/ieee802_11_defs.h b/src/common/ieee802_11_defs.h
index 8a64859..02d2ad7 100644 (file)
--- a/src/common/ieee802_11_defs.h
+++ b/src/common/ieee802_11_defs.h
@@ -1337,6 +1337,14 @@ enum wifi_display_subelem {
 #define MESH_PATH_PROTOCOL_VENDOR      255
 #define MESH_PATH_METRIC_AIRTIME       1
 #define MESH_PATH_METRIC_VENDOR                255
+/* IEEE 802.11s - Mesh Capability */
+#define MESH_CAP_ACCEPT_ADDITIONAL_PEER        BIT(0)
+#define MESH_CAP_MCCA_SUPPORTED                BIT(1)
+#define MESH_CAP_MCCA_ENABLED          BIT(2)
+#define MESH_CAP_FORWARDING            BIT(3)
+#define MESH_CAP_MBCA_ENABLED          BIT(4)
+#define MESH_CAP_TBTT_ADJUSTING                BIT(5)
+#define MESH_CAP_MESH_PS_LEVEL         BIT(6)
 
 enum plink_action_field {
        PLINK_OPEN = 1,

diff --git a/wpa_supplicant/mesh_mpm.c b/wpa_supplicant/mesh_mpm.c
index 3f36a60..f77a14c 100644 (file)
--- a/wpa_supplicant/mesh_mpm.c
+++ b/wpa_supplicant/mesh_mpm.c
@@ -649,6 +649,14 @@ static struct sta_info * mesh_mpm_add_peer(struct wpa_supplicant *wpa_s,
        struct sta_info *sta;
        int ret;
 
+       if (elems->mesh_config_len >= 7 &&
+           !(elems->mesh_config[6] & MESH_CAP_ACCEPT_ADDITIONAL_PEER)) {
+               wpa_msg(wpa_s, MSG_DEBUG,
+                       "mesh: Ignore a crowded peer " MACSTR,
+                       MAC2STR(addr));
+               return NULL;
+       }
+
        sta = ap_get_sta(data, addr);
        if (!sta) {
                sta = ap_sta_add(data, addr);