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qcacmn: Flush peer entries, if target is in reset state

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Free all references held due to missing unmap command
from the Target

CRs-Fixed: 2185830
Change-Id: Ied4c3fc9f694c32ad0a283942eebb64430082d70
This commit is contained in:
Vinay Adella
2018-02-26 11:03:05 +05:30
committed by nshrivas
parent 2a6bd8a5f9
commit 4ca1bf63ba
1 changed files with 47 additions and 0 deletions
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47
dp/wifi3.0/dp_main.c
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@@ -3163,6 +3163,45 @@ static void dp_vdev_register_wifi3(struct cdp_vdev *vdev_handle,
"DP Vdev Register success"); "DP Vdev Register success");
} }
/**
* dp_vdev_flush_peers() - Forcibily Flush peers of vdev
* @vdev: Datapath VDEV handle
*
* Return: void
*/
static void dp_vdev_flush_peers(struct dp_vdev *vdev)
{
struct dp_pdev *pdev = vdev->pdev;
struct dp_soc *soc = pdev->soc;
struct dp_peer *peer;
uint16_t *peer_ids;
uint8_t i = 0, j = 0;
peer_ids = qdf_mem_malloc(soc->max_peers * sizeof(peer_ids[0]));
if (!peer_ids) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"DP alloc failure - unable to flush peers");
return;
}
qdf_spin_lock_bh(&soc->peer_ref_mutex);
TAILQ_FOREACH(peer, &vdev->peer_list, peer_list_elem) {
for (i = 0; i < MAX_NUM_PEER_ID_PER_PEER; i++)
if (peer->peer_ids[i] != HTT_INVALID_PEER)
if (j < soc->max_peers)
peer_ids[j++] = peer->peer_ids[i];
}
qdf_spin_unlock_bh(&soc->peer_ref_mutex);
for (i = 0; i < j ; i++)
dp_rx_peer_unmap_handler(soc, peer_ids[i]);
qdf_mem_free(peer_ids);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_HIGH,
FL("Flushed peers for vdev object %pK "), vdev);
}
/* /*
* dp_vdev_detach_wifi3() - Detach txrx vdev * dp_vdev_detach_wifi3() - Detach txrx vdev
* @txrx_vdev: Datapath VDEV handle * @txrx_vdev: Datapath VDEV handle
@@ -3186,6 +3225,14 @@ static void dp_vdev_detach_wifi3(struct cdp_vdev *vdev_handle,
if (wlan_op_mode_sta == vdev->opmode) if (wlan_op_mode_sta == vdev->opmode)
dp_peer_delete_wifi3(vdev->vap_bss_peer, 0); dp_peer_delete_wifi3(vdev->vap_bss_peer, 0);
/*
* If Target is hung, flush all peers before detaching vdev
* this will free all references held due to missing
* unmap commands from Target
*/
if (hif_get_target_status(soc->hif_handle) == TARGET_STATUS_RESET)
dp_vdev_flush_peers(vdev);
/* /*
* Use peer_ref_mutex while accessing peer_list, in case * Use peer_ref_mutex while accessing peer_list, in case
* a peer is in the process of being removed from the list. * a peer is in the process of being removed from the list.