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qcacmn: Update queue size from pending queue after command activation

Browse source 
As part of activaiton of serialization command from pending to
active queue, the lock is released. In the activation API, the
same API to move non scan cmds from pending to active queue can
be called if activation fails. This reentrant API may modify the
pending queue even before the control is given back to the caller
API leading to random behavior when accesing the next cmd from pending
queue via local variables.

Add fix to update queue size from pending queue after command activation

Change-Id: I8082e2a9dd3410369967ab20196853ddfa0639a7
CRs-Fixed: 2801956
This commit is contained in:
Himanshu Batra 2020-11-02 09:26:43 +05:30 • committed by snandini
commit ca2afe2898
1 changed files with 15 additions and 6 deletions
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21
umac/cmn_services/serialization/src/wlan_serialization_non_scan.c
View file

@ -339,9 +339,11 @@ wlan_ser_move_non_scan_pending_to_active(
&next_cmd_list->cmd_in_use);
}
if (vdev_cmd_active)
if (vdev_cmd_active) {
qdf_atomic_clear_bit(CMD_MARKED_FOR_MOVEMENT,
&pending_cmd_list->cmd_in_use);
continue;
}
} else {
if (vdev_cmd_active)
break;
@ -417,12 +419,19 @@ wlan_ser_move_non_scan_pending_to_active(
if (vdev_queue_lookup || pdev_queue->blocking_cmd_active)
break;
if (next_cmd_list) {
qdf_atomic_clear_bit(CMD_MARKED_FOR_MOVEMENT,
&next_cmd_list->cmd_in_use);
qsize = wlan_serialization_list_size(pending_queue);
if (!qsize) {
wlan_serialization_release_lock(&pdev_queue->pdev_queue_lock);
goto error;
}
next_cmd_list = NULL;
qdf_status = wlan_serialization_peek_front(pending_queue,
&pending_node);
if (qdf_status != QDF_STATUS_SUCCESS) {
ser_err("can't peek cmd");
wlan_serialization_release_lock(&pdev_queue->pdev_queue_lock);
goto error;
}
}
wlan_serialization_release_lock(&pdev_queue->pdev_queue_lock);