From: Qi Zhang <qi.z.zhang@intel.com>
To: jingjing.wu@intel.com, beilei.xing@intel.com
Cc: dev@dpdk.org, Qi Zhang <qi.z.zhang@intel.com>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net/i40e: fix unexpected mbuf free in vPMD
Date: Mon, 9 Oct 2017 04:53:45 -0400 [thread overview]
Message-ID: <20171009085345.46357-1-qi.z.zhang@intel.com> (raw)
The patch reset tx queue sw_ring's mbuf to NULL after it is free in
i40_tx_free_bufs, this prevent same mbuf be free again in
i40e_dev_tx_queue_release. This fix follow the same implemenation of
non-vPMD.
Fixes: b4669bb95038 ("i40e: add vector Tx")
Cc: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
drivers/net/i40e/i40e_rxtx_vec_common.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h b/drivers/net/i40e/i40e_rxtx_vec_common.h
index 39a6da0..ed51b4d 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_common.h
+++ b/drivers/net/i40e/i40e_rxtx_vec_common.h
@@ -124,11 +124,13 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq)
*/
txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
+ txep[0].mbuf = NULL;
if (likely(m != NULL)) {
free[0] = m;
nb_free = 1;
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
+ txep[i].mbuf = NULL;
if (likely(m != NULL)) {
if (likely(m->pool == free[0]->pool)) {
free[nb_free++] = m;
@@ -145,6 +147,7 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq)
} else {
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
+ txep[i].mbuf = NULL;
if (m != NULL)
rte_mempool_put(m->pool, m);
}
--
2.9.5
next reply other threads:[~2017-10-09 1:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-09 8:53 Qi Zhang [this message]
2017-10-09 1:47 ` Wu, Jingjing
2017-10-09 12:44 ` Ananyev, Konstantin
2017-10-09 13:20 ` Bruce Richardson
2017-10-10 1:10 ` Zhang, Qi Z
2017-10-10 13:22 Qi Zhang
2017-10-10 8:48 ` Bruce Richardson
2017-10-10 11:05 ` Roger B. Melton
2017-10-10 11:39 ` Bruce Richardson
2017-10-10 11:47 ` Roger B. Melton
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