From: Ye Xiaolong <xiaolong.ye@intel.com>
To: Xiao Wang <xiao.w.wang@intel.com>
Cc: dev@dpdk.org, qi.z.zhang@intel.com, stable@dpdk.org,
Anna Lukin <annal@silicom.co.il>
Subject: Re: [dpdk-stable] [PATCH] net/fm10k: fix mbuf free in vector Rx
Date: Mon, 28 Oct 2019 13:39:57 +0800 [thread overview]
Message-ID: <20191028053957.GB33024@intel.com> (raw)
In-Reply-To: <20191026003322.131809-1-xiao.w.wang@intel.com>
On 10/25, Xiao Wang wrote:
>There's a corner case that all the Rx queue mbufs are allocated but none
>of them is used, this patch fixes mbuf free for this case.
>
>Fixes: b6719f8a04bb ("fm10k: release mbuf for vector Rx")
>Cc: stable@dpdk.org
>
>Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
>Signed-off-by: Anna Lukin <annal@silicom.co.il>
>---
> drivers/net/fm10k/fm10k_rxtx_vec.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/net/fm10k/fm10k_rxtx_vec.c b/drivers/net/fm10k/fm10k_rxtx_vec.c
>index 45542bef3..d76dfd16f 100644
>--- a/drivers/net/fm10k/fm10k_rxtx_vec.c
>+++ b/drivers/net/fm10k/fm10k_rxtx_vec.c
>@@ -359,8 +359,15 @@ fm10k_rx_queue_release_mbufs_vec(struct fm10k_rx_queue *rxq)
> return;
>
> /* free all mbufs that are valid in the ring */
>- for (i = rxq->next_dd; i != rxq->rxrearm_start; i = (i + 1) & mask)
>- rte_pktmbuf_free_seg(rxq->sw_ring[i]);
>+ if (rxq->rxrearm_nb == 0) {
>+ for (i = 0; i < rxq->nb_desc; i++)
>+ if (rxq->sw_ring[i] != NULL)
>+ rte_pktmbuf_free_seg(rxq->sw_ring[i]);
>+ } else {
>+ for (i = rxq->next_dd; i != rxq->rxrearm_start;
>+ i = (i + 1) & mask)
>+ rte_pktmbuf_free_seg(rxq->sw_ring[i]);
>+ }
> rxq->rxrearm_nb = rxq->nb_desc;
>
> /* set all entries to NULL */
>--
>2.15.1
>
Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>
Applied to dpdk-next-net-intel. Thanks.
prev parent reply other threads:[~2019-10-28 5:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-26 0:33 Xiao Wang
2019-10-28 5:39 ` Ye Xiaolong [this message]
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