diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2022-03-11 12:14:18 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-03-17 22:33:52 +0300 |
| commit | 5142239a22219921a7863cf00c9ab853c00689d8 (patch) | |
| tree | 5c43ec4b1efc07fee6947108900173ec562c9dea /drivers/net/veth.c | |
| parent | ad13baf4569152b00de11949b8c93aaa83c1243f (diff) | |
| download | linux-5142239a22219921a7863cf00c9ab853c00689d8.tar.xz | |
net: veth: Account total xdp_frame len running ndo_xdp_xmit
Even if this is a theoretical issue since it is not possible to perform
XDP_REDIRECT on a non-linear xdp_frame, veth driver does not account
paged area in ndo_xdp_xmit function pointer.
Introduce xdp_get_frame_len utility routine to get the xdp_frame full
length and account total frame size running XDP_REDIRECT of a
non-linear xdp frame into a veth device.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/54f9fd3bb65d190daf2c0bbae2f852ff16cfbaa0.1646989407.git.lorenzo@kernel.org
Diffstat (limited to 'drivers/net/veth.c')
| -rw-r--r-- | drivers/net/veth.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 58b20ea171dd..b77ce3fdcfe8 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -494,7 +494,7 @@ static int veth_xdp_xmit(struct net_device *dev, int n, struct xdp_frame *frame = frames[i]; void *ptr = veth_xdp_to_ptr(frame); - if (unlikely(frame->len > max_len || + if (unlikely(xdp_get_frame_len(frame) > max_len || __ptr_ring_produce(&rq->xdp_ring, ptr))) break; nxmit++; @@ -855,7 +855,7 @@ static int veth_xdp_rcv(struct veth_rq *rq, int budget, /* ndo_xdp_xmit */ struct xdp_frame *frame = veth_ptr_to_xdp(ptr); - stats->xdp_bytes += frame->len; + stats->xdp_bytes += xdp_get_frame_len(frame); frame = veth_xdp_rcv_one(rq, frame, bq, stats); if (frame) { /* XDP_PASS */ |