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qcacmn: Destroy rx tid spinlock when peer is freed

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Currently the rx tid spinlock is destroyed from
peer delete (based on peer state) or peer unmap handler.
This can lead to a race condition when the peer is
deleted before the peer map command is processed/received.

Fix the above race condition by destroying the rx tid
spinlock only when the peer handle is destroyed/freed.

Change-Id: Iaf7ccea11a95732c1aa20e66af6dd4a9a66517c5
CRs-Fixed: 2763533
This commit is contained in:
Rakesh Pillai
2020-08-27 17:59:37 +05:30
committed by snandini
parent 00a2d6550f
commit 351a71f1d3
2 changed files with 4 additions and 5 deletions
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7
dp/wifi3.0/dp_main.c
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@@ -5593,9 +5593,6 @@ dp_peer_create_wifi3(struct cdp_soc_t *soc_hdl, uint8_t vdev_id,
dp_set_peer_isolation(peer, false);
for (i = 0; i < DP_MAX_TIDS; i++)
qdf_spinlock_create(&peer->rx_tid[i].tid_lock);
dp_peer_update_state(soc, peer, DP_PEER_STATE_INIT);
dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_CDP);
@@ -6422,6 +6419,7 @@ void dp_peer_unref_delete(struct dp_peer *peer, enum dp_mod_id mod_id)
struct cdp_peer_cookie peer_cookie;
struct dp_peer *tmp_peer;
bool found = false;
int tid;
if (mod_id > DP_MOD_ID_RX)
QDF_ASSERT(qdf_atomic_dec_return(&peer->mod_refs[mod_id]) >= 0);
@@ -6487,6 +6485,9 @@ void dp_peer_unref_delete(struct dp_peer *peer, enum dp_mod_id mod_id)
DP_AST_ASSERT(TAILQ_EMPTY(&peer->ast_entry_list));
dp_peer_update_state(soc, peer, DP_PEER_STATE_FREED);
for (tid = 0; tid < DP_MAX_TIDS; tid++)
qdf_spinlock_destroy(&peer->rx_tid[tid].tid_lock);
qdf_mem_free(peer);
/*