From: Akihiko Odaki <akihiko.odaki@daynix.com>
To: Jason Wang <jasowang@redhat.com>,
Dmitry Fleytman <dmitry.fleytman@gmail.com>,
Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Luigi Rizzo <rizzo@iet.unipi.it>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>,
Vincenzo Maffione <v.maffione@gmail.com>,
Andrew Melnychenko <andrew@daynix.com>,
Yuri Benditovich <yuri.benditovich@daynix.com>
Cc: qemu-devel@nongnu.org, Akihiko Odaki <akihiko.odaki@daynix.com>
Subject: [PATCH v10 06/18] tap: Shrink zeroed virtio-net header
Date: Sun, 28 Apr 2024 16:00:49 +0900 [thread overview]
Message-ID: <20240428-rss-v10-6-73cbaa91aeb6@daynix.com> (raw)
In-Reply-To: <20240428-rss-v10-0-73cbaa91aeb6@daynix.com>
tap prepends a zeroed virtio-net header when writing a packet to a
tap with virtio-net header enabled but not in use. This only happens
when s->host_vnet_hdr_len == sizeof(struct virtio_net_hdr).
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
net/tap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/tap.c b/net/tap.c
index 9825518ff1f3..51f7aec39d9e 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -119,7 +119,7 @@ static ssize_t tap_receive_iov(NetClientState *nc, const struct iovec *iov,
TAPState *s = DO_UPCAST(TAPState, nc, nc);
const struct iovec *iovp = iov;
g_autofree struct iovec *iov_copy = NULL;
- struct virtio_net_hdr_mrg_rxbuf hdr = { };
+ struct virtio_net_hdr hdr = { };
if (s->host_vnet_hdr_len && !s->using_vnet_hdr) {
iov_copy = g_new(struct iovec, iovcnt + 1);
--
2.44.0
next prev parent reply other threads:[~2024-04-28 7:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-28 7:00 [PATCH v10 00/18] virtio-net RSS/hash report fixes and improvements Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 01/18] tap: Remove tap_probe_vnet_hdr_len() Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 02/18] tap: Remove qemu_using_vnet_hdr() Akihiko Odaki
2024-08-16 15:59 ` Jonathan Cameron via
2024-04-28 7:00 ` [PATCH v10 03/18] net: Move virtio-net header length assertion Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 04/18] net: Remove receive_raw() Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 05/18] tap: Call tap_receive_iov() from tap_receive() Akihiko Odaki
2024-04-28 7:00 ` Akihiko Odaki [this message]
2024-04-28 7:00 ` [PATCH v10 07/18] virtio-net: Do not propagate ebpf-rss-fds errors Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 08/18] virtio-net: Add only one queue pair when realizing Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 09/18] virtio-net: Copy header only when necessary Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 10/18] virtio-net: Shrink header byte swapping buffer Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 11/18] virtio-net: Disable RSS on reset Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 12/18] virtio-net: Unify the logic to update NIC state for RSS Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 13/18] virtio-net: Always set populate_hash Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 14/18] virtio-net: Do not write hashes to peer buffer Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 15/18] ebpf: Fix RSS error handling Akihiko Odaki
2024-04-28 7:00 ` [PATCH v10 16/18] ebpf: Return 0 when configuration fails Akihiko Odaki
2024-04-28 7:01 ` [PATCH v10 17/18] ebpf: Refactor tun_rss_steering_prog() Akihiko Odaki
2024-04-28 7:01 ` [PATCH v10 18/18] ebpf: Add a separate target for skeleton Akihiko Odaki
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