From: sashiko-bot@kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: virtualization@lists.linux.dev, "Eugenio Perez" <eperezma@redhat.com>
Subject: Re: [PATCH net v3 1/8] net: account for ingress-resolved virtio net hdr state
Date: Tue, 20 Oct 2026 12:03:58 +0000 [thread overview]
Message-ID: <sashiko-outbox-178917@kernel.org> (raw)
In-Reply-To: <b1dce3e055b973bd87bdbdc9e9729971fa383326.1792411304.git.mst@redhat.com>
> The following patch will add ingress resolution of uncommon virtio net
> hdr checksum metadata (software checksum completion at ingress) which
> adds performance overhead to the packet processing.
>
> We should make it visible, so a hypothetical workload relying on
> uncommon metadata can be distinguished from none at all. This way issues
> in the parsing will be reported and not quietly pay the host-CPU
> checksum overhead instead of offload.
>
> Flip every call to virtio_net_hdr_to_skb to test for negative errno
> only, and have tun count these events per device as rx_csum_sw, exposed
> via ethtool -S.
>
> Assisted-by: LLM
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1792411304.git.mst@redhat.com?part=1
next prev parent reply other threads:[~2026-10-20 12:03 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 12:03 [PATCH net v3 0/8] more virtio-net csum hardening Michael S. Tsirkin
2026-10-19 12:03 ` [PATCH net v3 1/8] net: account for ingress-resolved virtio net hdr state Michael S. Tsirkin
2026-10-20 12:03 ` sashiko-bot [this message]
2026-10-20 19:27 ` Willem de Bruijn
2026-10-20 19:38 ` Michael S. Tsirkin
2026-10-20 20:02 ` Willem de Bruijn
2026-10-20 20:09 ` Michael S. Tsirkin
2026-10-19 12:03 ` [PATCH net v3 2/8] um: vector: honor virtio net hdr conversion failures Michael S. Tsirkin
2026-10-20 12:03 ` sashiko-bot
2026-10-20 19:28 ` Willem de Bruijn
2026-10-19 12:03 ` [PATCH net v3 3/8] um: vector: trim skbs before verifying the header Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-19 12:03 ` [PATCH net v3 4/8] virtio_net: parse tunnel csum_start little-endian Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-19 12:03 ` [PATCH net v3 5/8] net: resolve uncommon partial checksums at ingress Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-20 19:44 ` Willem de Bruijn
2026-10-20 21:49 ` Michael S. Tsirkin
2026-10-21 0:05 ` Willem de Bruijn
2026-10-19 12:03 ` [PATCH net v3 6/8] net: add a sysctl to opt out of virtio net hdr checksum validation Michael S. Tsirkin
2026-10-19 14:19 ` Björn Töpel
2026-10-20 14:04 ` Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-20 19:54 ` Willem de Bruijn
2026-10-20 20:01 ` Michael S. Tsirkin
2026-10-20 20:19 ` Willem de Bruijn
2026-10-20 20:22 ` Michael S. Tsirkin
2026-10-20 23:12 ` Willem de Bruijn
2026-10-20 23:21 ` Michael S. Tsirkin
2026-10-20 20:56 ` Michael S. Tsirkin
2026-10-20 23:13 ` Willem de Bruijn
2026-10-20 23:20 ` Michael S. Tsirkin
2026-10-19 12:03 ` [PATCH net v3 7/8] net: add ip4_parse() Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-19 12:03 ` [PATCH net v3 8/8] virtio_net: cleanup protocol calculation Michael S. Tsirkin
2026-10-20 12:04 ` sashiko-bot
2026-10-19 12:09 ` [PATCH net v3 0/8] more virtio-net csum hardening netdev-bot+sinfo
2026-10-19 12:21 ` Michael S. Tsirkin
2026-10-19 16:51 ` Chris Arges
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