From: Lorenzo Bianconi <lorenzo@kernel.org>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, lorenzo.bianconi@redhat.com,
linyunsheng@huawei.com, alexander.duyck@gmail.com,
aleksander.lobakin@intel.com, liangchen.linux@gmail.com
Subject: [PATCH net] net: veth: fix packet segmentation in veth_convert_skb_to_xdp_buff
Date: Mon, 4 Dec 2023 16:01:48 +0100 [thread overview]
Message-ID: <eddfe549e7e626870071930964ac3c38a1dc8068.1701702000.git.lorenzo@kernel.org> (raw)
Based on the previous allocated packet, page_offset can be not null
in veth_convert_skb_to_xdp_buff routine.
Take into account page fragment offset during the skb paged area copy
in veth_convert_skb_to_xdp_buff().
Fixes: 2d0de67da51a ("net: veth: use newly added page pool API for veth with xdp")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/veth.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 57efb3454c57..977861c46b1f 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -790,7 +790,8 @@ static int veth_convert_skb_to_xdp_buff(struct veth_rq *rq,
skb_add_rx_frag(nskb, i, page, page_offset, size,
truesize);
- if (skb_copy_bits(skb, off, page_address(page),
+ if (skb_copy_bits(skb, off,
+ page_address(page) + page_offset,
size)) {
consume_skb(nskb);
goto drop;
--
2.43.0
next reply other threads:[~2023-12-04 15:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 15:01 Lorenzo Bianconi [this message]
2023-12-05 0:26 ` [PATCH net] net: veth: fix packet segmentation in veth_convert_skb_to_xdp_buff Yunsheng Lin
2023-12-06 3:30 ` patchwork-bot+netdevbpf
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