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netdev: handle disconnect event during a connection
If a disconnect arrives at any point during the 4-way handshake or key setting this would result in netdev sending a disconnect event to station. If this is a reassociation this case is unhandled in station and causes a hang as it expects any connection failure to be handled via the reassociation callback, not a random disconnect event. To handle this case we can utilize netdev_disconnected() along with the new NETDEV_RESULT_DISCONNECTED result to ensure the connect callback gets called if it exists (indicating a pending connection) Below are logs showing the "Unexpected disconnect event" which prevents IWD from cleaning up its state and ultimately results in a hang: Jul 16 18:16:13: src/station.c:station_transition_reassociate() Jul 16 18:16:13: event: state, old: connected, new: roaming Jul 16 18:16:13: src/wiphy.c:wiphy_radio_work_done() Work item 65 done Jul 16 18:16:13: src/wiphy.c:wiphy_radio_work_next() Starting work item 66 Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Del Station(20) Jul 16 18:16:13: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Deauthenticate(39) Jul 16 18:16:13: src/netdev.c:netdev_deauthenticate_event() Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification New Station(19) Jul 16 18:16:13: src/station.c:station_netdev_event() Associating Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Authenticate(37) Jul 16 18:16:13: src/netdev.c:netdev_authenticate_event() Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Associate(38) Jul 16 18:16:13: src/netdev.c:netdev_associate_event() Jul 16 18:16:13: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Connect(46) Jul 16 18:16:13: src/netdev.c:netdev_connect_event() Jul 16 18:16:13: src/netdev.c:netdev_connect_event() aborting and ignore_connect_event not set, proceed Jul 16 18:16:13: src/netdev.c:netdev_connect_event() expect_connect_failure not set, proceed Jul 16 18:16:13: src/netdev.c:parse_request_ies() Jul 16 18:16:13: src/netdev.c:netdev_connect_event() Request / Response IEs parsed Jul 16 18:16:13: src/netdev.c:netdev_get_oci() Jul 16 18:16:13: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:13: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:13: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:13: src/netdev.c:netdev_get_oci_cb() Obtained OCI: freq: 5220, width: 3, center1: 5210, center2: 0 Jul 16 18:16:13: src/eapol.c:eapol_start() Jul 16 18:16:13: src/netdev.c:netdev_unicast_notify() Unicast notification Control Port Frame(129) Jul 16 18:16:13: src/netdev.c:netdev_control_port_frame_event() Jul 16 18:16:13: src/eapol.c:eapol_handle_ptk_1_of_4() ifindex=6 Jul 16 18:16:13: src/netdev.c:netdev_mlme_notify() MLME notification Control Port TX Status(139) Jul 16 18:16:14: src/netdev.c:netdev_mlme_notify() MLME notification Notify CQM(64) Jul 16 18:16:14: src/netdev.c:netdev_cqm_event() Signal change event (above=1 signal=-60) Jul 16 18:16:17: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:17: src/netdev.c:netdev_mlme_notify() MLME notification Del Station(20) Jul 16 18:16:17: src/netdev.c:netdev_mlme_notify() MLME notification Deauthenticate(39) Jul 16 18:16:17: src/netdev.c:netdev_deauthenticate_event() Jul 16 18:16:17: src/netdev.c:netdev_mlme_notify() MLME notification Disconnect(48) Jul 16 18:16:17: src/netdev.c:netdev_disconnect_event() Jul 16 18:16:17: Received Deauthentication event, reason: 15, from_ap: true Jul 16 18:16:17: src/wiphy.c:wiphy_radio_work_done() Work item 66 done Jul 16 18:16:17: src/station.c:station_disconnect_event() 6 Jul 16 18:16:17: Unexpected disconnect event Jul 16 18:16:17: src/netdev.c:netdev_link_notify() event 16 on ifindex 6 Jul 16 18:16:17: src/wiphy.c:wiphy_reg_notify() Notification of command Reg Change(36) Jul 16 18:16:17: src/wiphy.c:wiphy_update_reg_domain() New reg domain country code for (global) is XX
This commit is contained in:
parent
22f238706c
commit
556f90ec28
19
src/netdev.c
19
src/netdev.c
@ -1243,8 +1243,7 @@ static void netdev_disconnect_event(struct l_genl_msg *msg,
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const void *data;
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uint16_t reason_code = 0;
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bool disconnect_by_ap = false;
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netdev_event_func_t event_filter;
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void *event_data;
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enum netdev_event event;
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l_debug("");
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@ -1282,19 +1281,11 @@ static void netdev_disconnect_event(struct l_genl_msg *msg,
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l_info("Received Deauthentication event, reason: %hu, from_ap: %s",
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reason_code, disconnect_by_ap ? "true" : "false");
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event_filter = netdev->event_filter;
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event_data = netdev->user_data;
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netdev_connect_free(netdev);
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event = disconnect_by_ap ? NETDEV_EVENT_DISCONNECT_BY_AP :
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NETDEV_EVENT_DISCONNECT_BY_SME;
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if (!event_filter)
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return;
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if (disconnect_by_ap)
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event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_AP,
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&reason_code, event_data);
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else
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event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_SME,
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&reason_code, event_data);
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netdev_disconnected(netdev, NETDEV_RESULT_DISCONNECTED,
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event, reason_code);
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}
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static void netdev_cmd_disconnect_cb(struct l_genl_msg *msg, void *user_data)
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