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qcacmn: Take reference for peer before adding ast

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Add reference for peer before adding ast entry
Reference is taken to avoid any synchronization
issue wrt to peer when adding ast entry.

Change-Id: Id3116daed84ad15eba515fedddb1146845542742
CRs-Fixed: 2335943
This commit is contained in:
Ruchi, Agrawal 2018-10-26 13:56:34 +05:30 • committed by nshrivas
commit 93bcf1292f
1 changed files with 29 additions and 1 deletions
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30
dp/wifi3.0/dp_peer.c
View file

@ -505,15 +505,32 @@ int dp_peer_add_ast(struct dp_soc *soc,
uint32_t flags)
{
struct dp_ast_entry *ast_entry;
struct dp_vdev *vdev = peer->vdev;
struct dp_vdev *vdev = NULL;
struct dp_pdev *pdev = NULL;
uint8_t next_node_mac[6];
bool peer_ref_cnt = false;
int ret = -1;
if (peer->delete_in_progress)
return 0;
if (type != CDP_TXRX_AST_TYPE_STATIC &&
type != CDP_TXRX_AST_TYPE_SELF) {
peer_ref_cnt = true;
qdf_spin_lock_bh(&soc->peer_ref_mutex);
qdf_atomic_inc(&peer->ref_cnt);
qdf_spin_unlock_bh(&soc->peer_ref_mutex);
}
vdev = peer->vdev;
if (!vdev) {
QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR,
FL("Peers vdev is NULL"));
QDF_ASSERT(0);
/*Handling case when assert is disabled*/
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
return ret;
}
@ -545,6 +562,8 @@ int dp_peer_add_ast(struct dp_soc *soc,
pdev->pdev_id);
if (ast_entry) {
qdf_spin_unlock_bh(&soc->ast_lock);
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
return 0;
}
} else {
@ -565,6 +584,8 @@ int dp_peer_add_ast(struct dp_soc *soc,
dp_peer_del_ast(soc, ast_entry);
}
qdf_spin_unlock_bh(&soc->ast_lock);
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
return 0;
}
}
@ -575,6 +596,8 @@ add_ast_entry:
if (!ast_entry) {
qdf_spin_unlock_bh(&soc->ast_lock);
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR,
FL("fail to allocate ast_entry"));
QDF_ASSERT(0);
@ -647,9 +670,14 @@ add_ast_entry:
mac_addr,
next_node_mac,
flags))
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
return 0;
}
if (peer_ref_cnt)
dp_peer_unref_delete(peer);
return ret;
}