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net/octeontx: fix packet corruption on Tx

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LMTST does not guarantee packet content get synced with L2C when
HW access the packet for transmitting.

Adding coherent IO write barrier will make sure HW sees the correct
packet if its modified.

Fixes: 9e747589bd ("net/octeontx: add packet transmit burst function")
Cc: stable@dpdk.org

Reported-by: Vikas Aggarwal <vikas.aggarwal@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
This commit is contained in:
Jerin Jacob 2018-08-17 20:00:22 +05:30 committed by Ferruh Yigit
parent 1f2766b7ee
commit 9f92552eb9
1 changed files with 1 additions and 0 deletions
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drivers/net/octeontx/octeontx_rxtx.c
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@ -63,6 +63,7 @@ octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
count = 0; count = 0;
rte_cio_wmb();
while (count < nb_pkts) { while (count < nb_pkts) {
res = __octeontx_xmit_pkts(dq->lmtline_va, dq->ioreg_va, res = __octeontx_xmit_pkts(dq->lmtline_va, dq->ioreg_va,
dq->fc_status_va, dq->fc_status_va,