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wiphy: Ensure connected_bss is always valid

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This commit is contained in:
Denis Kenzior 2015-04-30 16:03:17 -05:00
parent 15620721b0
commit 5137d8b855
1 changed files with 22 additions and 31 deletions
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53
src/wiphy.c
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@ -1139,13 +1139,11 @@ static void mlme_associate_event(struct l_genl_msg *msg, struct netdev *netdev)
l_info("Association completed"); l_info("Association completed");
if (netdev->connected_bss && if (netdev->connected_network->ssid_security ==
netdev->connected_network->ssid_security == SCAN_SSID_SECURITY_NONE)
SCAN_SSID_SECURITY_NONE) {
netdev_set_linkmode_and_operstate(netdev->index, 1, IF_OPER_UP, netdev_set_linkmode_and_operstate(netdev->index, 1, IF_OPER_UP,
operstate_cb, netdev); operstate_cb, netdev);
} }
}
static void genl_associate_cb(struct l_genl_msg *msg, void *user_data) static void genl_associate_cb(struct l_genl_msg *msg, void *user_data)
{ {
@ -1159,21 +1157,11 @@ static void genl_associate_cb(struct l_genl_msg *msg, void *user_data)
static void mlme_associate_cmd(struct netdev *netdev) static void mlme_associate_cmd(struct netdev *netdev)
{ {
struct l_genl_msg *msg; struct l_genl_msg *msg;
struct bss *bss; struct bss *bss = netdev->connected_bss;
struct network *network = netdev->connected_network; struct network *network = netdev->connected_network;
struct l_dbus_message *error;
l_debug(""); l_debug("");
bss = netdev->connected_bss;
if (!bss) {
error = dbus_error_not_available(netdev->connect_pending);
dbus_pending_reply(&netdev->connect_pending, error);
netdev_disassociated(netdev);
return;
}
msg = l_genl_msg_new_sized(NL80211_CMD_ASSOCIATE, 512); msg = l_genl_msg_new_sized(NL80211_CMD_ASSOCIATE, 512);
msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index); msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4, &bss->frequency); msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4, &bss->frequency);
@ -1370,7 +1358,6 @@ static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr)
uint16_t type, len; uint16_t type, len;
const void *data; const void *data;
struct bss *bss; struct bss *bss;
struct bss *old_bss;
const uint8_t *ssid = NULL; const uint8_t *ssid = NULL;
int ssid_len; int ssid_len;
struct network *network; struct network *network;
@ -1496,23 +1483,12 @@ static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr)
network_emit_added(network); network_emit_added(network);
} }
old_bss = l_queue_remove_if(netdev->old_bss_list, bss_match, bss); l_debug("Found BSS '%s' with SSID: %s, freq: %u, "
l_debug("Found %s BSS '%s' with SSID: %s, freq: %u, "
"strength: %i", "strength: %i",
old_bss ? "existing" : "new",
bss_address_to_string(bss), bss_address_to_string(bss),
util_ssid_to_utf8(ssid_len, ssid), util_ssid_to_utf8(ssid_len, ssid),
bss->frequency, bss->signal_strength); bss->frequency, bss->signal_strength);
if (old_bss) {
if (netdev->connected_bss &&
bss_match(old_bss, netdev->connected_bss))
netdev->connected_bss = NULL;
bss_free(old_bss);
}
l_queue_insert(network->bss_list, bss, add_bss, NULL); l_queue_insert(network->bss_list, bss, add_bss, NULL);
l_queue_push_head(netdev->bss_list, bss); l_queue_push_head(netdev->bss_list, bss);
return; return;
@ -1598,12 +1574,27 @@ static void get_scan_done(void *user)
l_debug("get_scan_done for netdev: %p", netdev); l_debug("get_scan_done for netdev: %p", netdev);
if (l_queue_isempty(netdev->old_bss_list)) if (netdev->connected_bss) {
goto done; struct bss *bss;
bss = l_queue_find(netdev->bss_list, bss_match,
netdev->connected_bss);
if (!bss) {
l_warn("Connected BSS not in scan results!");
l_queue_push_tail(netdev->bss_list,
netdev->connected_bss);
l_queue_push_tail(netdev->connected_network->bss_list,
netdev->connected_bss);
l_queue_remove(netdev->old_bss_list,
netdev->connected_bss);
} else
netdev->connected_bss = bss;
}
l_hashmap_foreach_remove(netdev->networks, l_hashmap_foreach_remove(netdev->networks,
network_remove_if_lost, NULL); network_remove_if_lost, NULL);
done:
l_queue_destroy(netdev->old_bss_list, bss_free); l_queue_destroy(netdev->old_bss_list, bss_free);
netdev->old_bss_list = NULL; netdev->old_bss_list = NULL;
} }