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qcacmn: Take peer ref count and dec it after using

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Currently peer reference is used with out taking any ref count.
In parallel context execution on different core peer reference may
be cleaned up in peer unmap event. So take ref count while using
the peer reference and decrement after done with it.

Change-Id: I02ca172cbdc4309fabd3bbbad00940826662bbd3
CRs-Fixed: 2301963
This commit is contained in:
Sravan Kumar Kairam
2018-08-14 23:51:58 +05:30
committed by nshrivas
parent 97d6a98c03
commit 26d471ec56
12 changed files with 210 additions and 125 deletions
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30
dp/wifi3.0/dp_peer.h
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@@ -44,6 +44,7 @@ __dp_peer_find_by_id(struct dp_soc *soc,
return peer;
}
#ifdef PEER_PROTECTED_ACCESS
/**
* dp_peer_find_by_id() - Returns peer object given the peer id
* if delete_in_progress in not set for peer
@@ -53,6 +54,24 @@ __dp_peer_find_by_id(struct dp_soc *soc,
*
* Return: struct dp_peer*: Pointer to DP peer object
*/
static inline
struct dp_peer *dp_peer_find_by_id(struct dp_soc *soc,
uint16_t peer_id)
{
struct dp_peer *peer;
qdf_spin_lock_bh(&soc->peer_ref_mutex);
peer = __dp_peer_find_by_id(soc, peer_id);
if (!peer || (peer && peer->delete_in_progress)) {
qdf_spin_unlock_bh(&soc->peer_ref_mutex);
return NULL;
}
qdf_atomic_inc(&peer->ref_cnt);
qdf_spin_unlock_bh(&soc->peer_ref_mutex);
return peer;
}
#else
static inline struct dp_peer *
dp_peer_find_by_id(struct dp_soc *soc,
uint16_t peer_id)
@@ -60,13 +79,13 @@ dp_peer_find_by_id(struct dp_soc *soc,
struct dp_peer *peer;
peer = __dp_peer_find_by_id (soc, peer_id);
if (peer && peer->delete_in_progress) {
return NULL;
}
return peer;
}
#endif /* PEER_LOCK_REF_PROTECT */
void dp_rx_peer_map_handler(void *soc_handle, uint16_t peer_id,
uint16_t hw_peer_id, uint8_t vdev_id,
@@ -163,4 +182,13 @@ dp_get_vdev_from_soc_vdev_id_wifi3(struct dp_soc *soc,
return NULL;
}
/*
* dp_peer_find_by_id_exist - check if peer exists for given id
* @soc: core DP soc context
* @peer_id: peer id from peer object can be retrieved
*
* Return: true if peer exists of false otherwise
*/
bool dp_peer_find_by_id_valid(struct dp_soc *soc, uint16_t peer_id);
#endif /* _DP_PEER_H_ */