* [PATCH net-next] virtio-net: xsk: rx: move the xdp->data adjustment to buf_to_xdp()
@ 2025-07-05 7:55 Bui Quang Minh
2025-07-10 2:00 ` patchwork-bot+netdevbpf
0 siblings, 1 reply; 2+ messages in thread
From: Bui Quang Minh @ 2025-07-05 7:55 UTC (permalink / raw)
To: netdev
Cc: Michael S. Tsirkin, Jason Wang, Xuan Zhuo, Eugenio Pérez,
Andrew Lunn, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Alexei Starovoitov, Daniel Borkmann,
Jesper Dangaard Brouer, John Fastabend, Stanislav Fomichev,
virtualization, linux-kernel, bpf, Bui Quang Minh
This commit does not do any functional changes. It moves xdp->data
adjustment for buffer other than first buffer to buf_to_xdp() helper so
that the xdp_buff adjustment does not scatter over different functions.
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
---
drivers/net/virtio_net.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9f6e0153ed2d..4d995a47a116 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1179,7 +1179,14 @@ static struct xdp_buff *buf_to_xdp(struct virtnet_info *vi,
return NULL;
}
- xsk_buff_set_size(xdp, len);
+ if (first_buf) {
+ xsk_buff_set_size(xdp, len);
+ } else {
+ xdp_prepare_buff(xdp, xdp->data_hard_start,
+ XDP_PACKET_HEADROOM - vi->hdr_len, len, 1);
+ xdp->flags = 0;
+ }
+
xsk_buff_dma_sync_for_cpu(xdp);
return xdp;
@@ -1304,7 +1311,7 @@ static int xsk_append_merge_buffer(struct virtnet_info *vi,
goto err;
}
- memcpy(buf, xdp->data - vi->hdr_len, len);
+ memcpy(buf, xdp->data, len);
xsk_buff_free(xdp);
--
2.43.0
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH net-next] virtio-net: xsk: rx: move the xdp->data adjustment to buf_to_xdp()
2025-07-05 7:55 [PATCH net-next] virtio-net: xsk: rx: move the xdp->data adjustment to buf_to_xdp() Bui Quang Minh
@ 2025-07-10 2:00 ` patchwork-bot+netdevbpf
0 siblings, 0 replies; 2+ messages in thread
From: patchwork-bot+netdevbpf @ 2025-07-10 2:00 UTC (permalink / raw)
To: Bui Quang Minh
Cc: netdev, mst, jasowang, xuanzhuo, eperezma, andrew+netdev, davem,
edumazet, kuba, pabeni, ast, daniel, hawk, john.fastabend, sdf,
virtualization, linux-kernel, bpf
Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Sat, 5 Jul 2025 14:55:14 +0700 you wrote:
> This commit does not do any functional changes. It moves xdp->data
> adjustment for buffer other than first buffer to buf_to_xdp() helper so
> that the xdp_buff adjustment does not scatter over different functions.
>
> Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
> ---
> drivers/net/virtio_net.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
Here is the summary with links:
- [net-next] virtio-net: xsk: rx: move the xdp->data adjustment to buf_to_xdp()
https://git.kernel.org/netdev/net-next/c/f47e8f618c7d
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-07-05 7:55 [PATCH net-next] virtio-net: xsk: rx: move the xdp->data adjustment to buf_to_xdp() Bui Quang Minh
2025-07-10 2:00 ` patchwork-bot+netdevbpf
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