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netdev: Separate connect_failed and disconnected paths

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Commit c59669a366c5 ("netdev: disambiguate between disconnection types")
introduced different paths for different types of disconnection
notifications from netdev.  Formalize this further by having
netdev_connect_failed only invoke connect_cb.

Disconnections that could be triggered outside of connection
related events are now handled on a different code path.  For this
purpose, netdev_disconnected() is introduced.
This commit is contained in:
Denis Kenzior 2023-11-14 17:05:20 -06:00
parent a14d78596d
commit 30c6a10f28
1 changed files with 33 additions and 12 deletions
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45
src/netdev.c
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@ -839,7 +839,6 @@ static void netdev_connect_failed(struct netdev *netdev,
uint16_t status_or_reason)
{
netdev_connect_cb_t connect_cb = netdev->connect_cb;
netdev_event_func_t event_filter = netdev->event_filter;
void *connect_data = netdev->user_data;
/* Done this way to allow re-entrant netdev_connect calls */
@ -847,15 +846,6 @@ static void netdev_connect_failed(struct netdev *netdev,
if (connect_cb)
connect_cb(netdev, result, &status_or_reason, connect_data);
else if (event_filter) {
/* NETDEV_EVENT_DISCONNECT_BY_SME expects a reason code */
if (result != NETDEV_RESULT_HANDSHAKE_FAILED)
status_or_reason = MMPDU_REASON_CODE_UNSPECIFIED;
event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_SME,
&status_or_reason,
connect_data);
}
}
static void netdev_connect_failed_cb(struct l_genl_msg *msg, void *user_data)
@ -900,12 +890,42 @@ static void netdev_deauth_and_fail_connection(struct netdev *netdev,
netdev_send_and_fail_connection(netdev, result, status_code, msg);
}
/*
* If we have a connection callback pending, either through netdev_connect
* or netdev_reassociate, then invoke that callback with the @result and
* @status_or_reason. Otherwise, invoke the event callback with the @event
* and @status_or_reason.
*
* This is useful for situations where handshaking or setting keys somehow
* fails (perhaps due to rekeying), or if the device is removed / brought
* down when keys are being set as a result of a rekey
*/
static void netdev_disconnected(struct netdev *netdev,
enum netdev_result result,
enum netdev_event event,
uint16_t status_or_reason)
{
netdev_event_func_t event_filter = netdev->event_filter;
void *event_data = netdev->user_data;
if (netdev->connect_cb) {
netdev_connect_failed(netdev, result, status_or_reason);
return;
}
netdev_connect_free(netdev);
if (event_filter)
event_filter(netdev, event, &status_or_reason, event_data);
}
static void netdev_disconnect_by_sme_cb(struct l_genl_msg *msg, void *user_data)
{
struct netdev *netdev = user_data;
netdev->disconnect_cmd_id = 0;
netdev_connect_failed(netdev, netdev->result, netdev->last_code);
netdev_disconnected(netdev, netdev->result,
NETDEV_EVENT_DISCONNECT_BY_SME, netdev->last_code);
}
static void netdev_disconnect_by_sme(struct netdev *netdev,
@ -1440,7 +1460,8 @@ static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
* CMD_DISCONNECT
*/
if (err == -ENETDOWN) {
netdev_connect_failed(netdev, NETDEV_RESULT_ABORTED,
netdev_disconnected(netdev, NETDEV_RESULT_ABORTED,
NETDEV_EVENT_DISCONNECT_BY_SME,
MMPDU_STATUS_CODE_UNSPECIFIED);
return;
}