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qcacld-3.0: Add check for valid last_skb before aggregation

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In the FISA UDP aggregation path, flush may be initiated while trying to
add nbuf to end of the list. When flush happens, both head_skb and
last_skb will be set to NULL so make sure last_skb is valid before
adding nbuf to end of the list.

Change-Id: I473540a205c56f2fea3ffb82909cfec31c58a518
CRs-Fixed: 2783758
This commit is contained in:
Saket Jha
2020-09-28 21:10:59 -07:00
committed by snandini
parent 516bf73a1d
commit 43094a430b
1 changed files with 6 additions and 1 deletions
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7
core/dp/txrx3.0/dp_fisa_rx.c
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@@ -1094,7 +1094,12 @@ dp_rx_fisa_aggr_udp(struct dp_rx_fst *fisa_hdl,
* This is 3rd skb for flow. * This is 3rd skb for flow.
* After head skb, 2nd skb in fraglist * After head skb, 2nd skb in fraglist
*/ */
qdf_nbuf_set_next(fisa_flow->last_skb, nbuf); if (fisa_flow->last_skb) {
qdf_nbuf_set_next(fisa_flow->last_skb, nbuf);
} else {
qdf_nbuf_free(nbuf);
return FISA_AGGR_DONE;
}
} else { } else {
/* 1st skb after head skb /* 1st skb after head skb
* implement qdf wrapper set_ext_list * implement qdf wrapper set_ext_list