From: Dongdong Liu <liudongdong3@huawei.com>
To: <dev@dpdk.org>, <andrew.rybchenko@oktetlabs.ru>,
<ferruh.yigit@xilinx.com>, <thomas@monjalon.net>,
<liudongdong3@huawei.com>, <lihuisong@huawei.com>,
<haijie1@huawei.com>
Cc: <stable@dpdk.org>, <fengchengwen@huawei.com>,
<yisen.zhuang@huawei.com>, <humin29@huawei.com>
Subject: [PATCH RESEND 07/13] net/hns3: fix next-to-use overflow when using SVE xmit
Date: Mon, 5 Sep 2022 16:59:33 +0800 [thread overview]
Message-ID: <20220905085939.22236-8-liudongdong3@huawei.com> (raw)
In-Reply-To: <20220905085939.22236-1-liudongdong3@huawei.com>
From: Chengwen Feng <fengchengwen@huawei.com>
If txq's next-to-use plus nb_pkts equal txq's nb_tx_desc when using
SVE xmit algorithm, the txq's next-to-use will equal nb_tx_desc after
the xmit, this does not cause Tx exceptions, but may affect other ops
that depend on this field, such as tx_descriptor_status.
This patch fixes it.
Fixes: f0c243a6cb6f ("net/hns3: support SVE Tx")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
drivers/net/hns3/hns3_rxtx_vec_sve.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/hns3/hns3_rxtx_vec_sve.c b/drivers/net/hns3/hns3_rxtx_vec_sve.c
index b0dfb052bb..f09a81dbd5 100644
--- a/drivers/net/hns3/hns3_rxtx_vec_sve.c
+++ b/drivers/net/hns3/hns3_rxtx_vec_sve.c
@@ -464,14 +464,16 @@ hns3_xmit_fixed_burst_vec_sve(void *__restrict tx_queue,
return 0;
}
- if (txq->next_to_use + nb_pkts > txq->nb_tx_desc) {
+ if (txq->next_to_use + nb_pkts >= txq->nb_tx_desc) {
nb_tx = txq->nb_tx_desc - txq->next_to_use;
hns3_tx_fill_hw_ring_sve(txq, tx_pkts, nb_tx);
txq->next_to_use = 0;
}
- hns3_tx_fill_hw_ring_sve(txq, tx_pkts + nb_tx, nb_pkts - nb_tx);
- txq->next_to_use += nb_pkts - nb_tx;
+ if (nb_pkts > nb_tx) {
+ hns3_tx_fill_hw_ring_sve(txq, tx_pkts + nb_tx, nb_pkts - nb_tx);
+ txq->next_to_use += nb_pkts - nb_tx;
+ }
txq->tx_bd_ready -= nb_pkts;
hns3_write_txq_tail_reg(txq, nb_pkts);
--
2.22.0
next prev parent reply other threads:[~2022-09-05 9:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-05 8:59 [PATCH RESEND 00/13] some bugfixes and clean code for hns3 Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 01/13] net/hns3: rename hns3 dump file Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 02/13] net/hns3: fix code check warning Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 03/13] net/hns3: adjust code for dump file Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 04/13] net/hns3: add dump of VF vlan filter modify capability Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 05/13] net/hns3: fix fail to receive PTP packet Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 06/13] net/hns3: fix segment fault when using SVE xmit Dongdong Liu
2022-09-05 8:59 ` Dongdong Liu [this message]
2022-09-05 8:59 ` [PATCH RESEND 08/13] net/hns3: fix next-to-use overflow when using simple xmit Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 09/13] net/hns3: optimize SVE xmit performance Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 10/13] net/hns3: fix segment fault when secondary process access FW Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 11/13] net/hns3: delete rte unused tag Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 12/13] net/hns3: fix uncleared hardware MAC statistics Dongdong Liu
2022-09-05 8:59 ` [PATCH RESEND 13/13] net/hns3: revert optimize Tx performance Dongdong Liu
2022-09-17 1:14 ` [PATCH RESEND 00/13] some bugfixes and clean code for hns3 Dongdong Liu
2022-09-28 12:03 ` Dongdong Liu
2022-10-04 16:00 ` Andrew Rybchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220905085939.22236-8-liudongdong3@huawei.com \
--to=liudongdong3@huawei.com \
--cc=andrew.rybchenko@oktetlabs.ru \
--cc=dev@dpdk.org \
--cc=fengchengwen@huawei.com \
--cc=ferruh.yigit@xilinx.com \
--cc=haijie1@huawei.com \
--cc=humin29@huawei.com \
--cc=lihuisong@huawei.com \
--cc=stable@dpdk.org \
--cc=thomas@monjalon.net \
--cc=yisen.zhuang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).