nl80211: Add debug prints for BSS status in scan results

[libeap.git] / src / drivers / driver_nl80211.c

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 77245eb..c4db1a2 100644 (file)
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -88,6 +88,7 @@ struct wpa_driver_nl80211_data {
        struct nl_cb *nl_cb;
        struct genl_family *nl80211;
 
+       u8 auth_bssid[ETH_ALEN];
        u8 bssid[ETH_ALEN];
        int associated;
        u8 ssid[32];
@@ -653,6 +654,7 @@ static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
                return;
        }
 
+       os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
        os_memset(&event, 0, sizeof(event));
        os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
        event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
@@ -1616,6 +1618,7 @@ static int bss_info_handler(struct nl_msg *msg, void *arg)
                [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
                [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
                [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
+               [NL80211_BSS_STATUS] = { .type = NLA_U32 },
                [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
        };
        struct wpa_scan_results *res = arg;
@@ -1669,6 +1672,21 @@ static int bss_info_handler(struct nl_msg *msg, void *arg)
        if (ie)
                os_memcpy(r + 1, ie, ie_len);
 
+       if (bss[NL80211_BSS_STATUS]) {
+               enum nl80211_bss_status status;
+               status = nla_get_u32(bss[NL80211_BSS_STATUS]);
+               switch (status) {
+               case NL80211_BSS_STATUS_AUTHENTICATED:
+                       r->flags |= WPA_SCAN_AUTHENTICATED;
+                       break;
+               case NL80211_BSS_STATUS_ASSOCIATED:
+                       r->flags |= WPA_SCAN_ASSOCIATED;
+                       break;
+               default:
+                       break;
+               }
+       }
+
        tmp = os_realloc(res->res,
                         (res->num + 1) * sizeof(struct wpa_scan_res *));
        if (tmp == NULL) {
@@ -1682,6 +1700,53 @@ static int bss_info_handler(struct nl_msg *msg, void *arg)
 }
 
 
+static void wpa_driver_nl80211_check_bss_status(
+       struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
+{
+       size_t i;
+
+       for (i = 0; i < res->num; i++) {
+               struct wpa_scan_res *r = res->res[i];
+               if (r->flags & WPA_SCAN_AUTHENTICATED) {
+                       wpa_printf(MSG_DEBUG, "nl80211: Scan results "
+                                  "indicates BSS status with " MACSTR
+                                  " as authenticated",
+                                  MAC2STR(r->bssid));
+                       if (drv->nlmode == NL80211_IFTYPE_STATION &&
+                           os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
+                           os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
+                           0) {
+                               wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
+                                          " in local state (auth=" MACSTR
+                                          " assoc=" MACSTR ")",
+                                          MAC2STR(drv->auth_bssid),
+                                          MAC2STR(drv->bssid));
+                       }
+               }
+
+               if (r->flags & WPA_SCAN_ASSOCIATED) {
+                       wpa_printf(MSG_DEBUG, "nl80211: Scan results "
+                                  "indicate BSS status with " MACSTR
+                                  " as associated",
+                                  MAC2STR(r->bssid));
+                       if (drv->nlmode == NL80211_IFTYPE_STATION &&
+                           !drv->associated) {
+                               wpa_printf(MSG_DEBUG, "nl80211: Local state "
+                                          "(not associated) does not match "
+                                          "with BSS state");
+                       } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
+                                  os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
+                                  0) {
+                               wpa_printf(MSG_DEBUG, "nl80211: Local state "
+                                          "(associated with " MACSTR ") does "
+                                          "not match with BSS state",
+                                          MAC2STR(r->bssid));
+                       }
+               }
+       }
+}
+
+
 /**
  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
@@ -1711,6 +1776,7 @@ wpa_driver_nl80211_get_scan_results(void *priv)
        if (ret == 0) {
                wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
                           (unsigned long) res->num);
+               wpa_driver_nl80211_check_bss_status(drv, res);
                return res;
        }
        wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
@@ -2018,6 +2084,7 @@ static int wpa_driver_nl80211_authenticate(
        int count = 0;
 
        drv->associated = 0;
+       os_memset(drv->auth_bssid, 0, ETH_ALEN);
 
        if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
                return -1;