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netdev: Detect netdev going down early

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In case the netdev is brought down while we're trying to connect, try to
detect this and fail early instead of trying to send additional
commands.

src/station.c:station_enter_state() Old State: disconnected, new state: connecting
src/station.c:station_netdev_event() Associating
src/netdev.c:netdev_mlme_notify() MLME notification Connect(46)
src/netdev.c:netdev_connect_event()
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/eapol.c:eapol_handle_ptk_1_of_4() ifindex=4
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/eapol.c:eapol_handle_ptk_3_of_4() ifindex=4
src/netdev.c:netdev_set_gtk() 4
src/station.c:station_handshake_event() Setting keys
src/netdev.c:netdev_set_tk() 4
src/netdev.c:netdev_set_rekey_offload() 4
New Key for Group Key failed for ifindex: 4:Network is down
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/station.c:station_free()
src/netdev.c:netdev_mlme_notify() MLME notification Disconnect(48)
src/netdev.c:netdev_disconnect_event()
src/wiphy.c:wiphy_reg_notify() Notification of command Reg Change(36)
src/wiphy.c:wiphy_update_reg_domain() New reg domain country code for (global) is XX
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/wiphy.c:wiphy_reg_notify() Notification of command Reg Change(36)
src/wiphy.c:wiphy_update_reg_domain() New reg domain country code for (global) is DE
src/wiphy.c:wiphy_radio_work_done() Work item 14 done
src/station.c:station_connect_cb() 4, result: 4
Segmentation fault
This commit is contained in:
Denis Kenzior 2021-04-27 17:33:37 -05:00
parent 775f4643b5
commit e5550ed58f
1 changed files with 19 additions and 3 deletions
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22
src/netdev.c
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@ -1309,12 +1309,20 @@ static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
netdev->group_handshake_timeout = NULL;
}
netdev->result = NETDEV_RESULT_KEY_SETTING_FAILED;
handshake_event(&nhs->super, HANDSHAKE_EVENT_SETTING_KEYS_FAILED, &err);
switch (netdev->type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
/*
* If we failed due to the netdev being brought down,
* just abort the connection and do not try to send a
* CMD_DISCONNECT
*/
if (err == -ENETDOWN) {
netdev_connect_failed(netdev, NETDEV_RESULT_ABORTED,
MMPDU_STATUS_CODE_UNSPECIFIED);
return;
}
msg = netdev_build_cmd_disconnect(netdev,
MMPDU_REASON_CODE_UNSPECIFIED);
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, msg,
@ -1322,11 +1330,19 @@ static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
netdev, NULL);
break;
case NL80211_IFTYPE_AP:
if (err == -ENETDOWN)
return;
msg = netdev_build_cmd_del_station(netdev, nhs->super.spa,
MMPDU_REASON_CODE_UNSPECIFIED, false);
if (!l_genl_family_send(nl80211, msg, NULL, NULL, NULL))
l_error("error sending DEL_STATION");
break;
}
netdev->result = NETDEV_RESULT_KEY_SETTING_FAILED;
handshake_event(&nhs->super, HANDSHAKE_EVENT_SETTING_KEYS_FAILED, &err);
}
static void try_handshake_complete(struct netdev_handshake_state *nhs)