DPDK patches and discussions
 help / color / mirror / Atom feed
From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, yong.liu@intel.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH 1/2] vhost: fix Virtio-net header len with packed ring
Date: Thu,  1 Oct 2020 12:11:54 +0200
Message-ID: <20201001101155.206237-2-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20201001101155.206237-1-maxime.coquelin@redhat.com>

In case packed ring layout has been negotiated, but neither
Version 1 nor mergeable buffers, the Virtio-net header len
is assigned to the legacy devices value, which is wrong.

This patch fixes this with using the proper len as devices
using packed ring are not legacy devices.

Fixes: a922401f35cc ("vhost: add Rx support for packed ring")
Fixes: ae999ce49dcb ("vhost: add Tx support for packed ring")
Cc: stable@dpdk.org

Reported-by: Marvin Liu <yong.liu@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
 lib/librte_vhost/vhost_user.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 4deceb3e00..5d1fb9e863 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -341,7 +341,9 @@ vhost_user_set_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
 	dev->features = features;
 	if (dev->features &
+		 (1ULL << VIRTIO_F_VERSION_1) |
 		dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
 	} else {
 		dev->vhost_hlen = sizeof(struct virtio_net_hdr);

  reply	other threads:[~2020-10-01 10:12 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 10:11 [dpdk-dev] [PATCH 0/2] Fix packed ring header len Maxime Coquelin
2020-10-01 10:11 ` Maxime Coquelin [this message]
2020-10-09  6:33   ` [dpdk-dev] [PATCH 1/2] vhost: fix Virtio-net header len with packed ring Xia, Chenbo
2020-10-01 10:11 ` [dpdk-dev] [PATCH 2/2] vhost: use fixed Virtio-net header len " Maxime Coquelin
2020-10-09  6:36   ` Xia, Chenbo
2020-10-09  7:23     ` Maxime Coquelin
2020-10-09  7:23 ` [dpdk-dev] [PATCH 0/2] Fix packed ring header len Maxime Coquelin

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201001101155.206237-2-maxime.coquelin@redhat.com \
    --to=maxime.coquelin@redhat.com \
    --cc=chenbo.xia@intel.com \
    --cc=dev@dpdk.org \
    --cc=stable@dpdk.org \
    --cc=yong.liu@intel.com \


* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK patches and discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git