* [PATCH bpf-next] bpf: devmap: compute proper xdp_frame len redirecting frames
@ 2022-07-23 17:17 Lorenzo Bianconi
2022-07-26 14:40 ` patchwork-bot+netdevbpf
0 siblings, 1 reply; 2+ messages in thread
From: Lorenzo Bianconi @ 2022-07-23 17:17 UTC (permalink / raw)
To: bpf
Cc: ast, daniel, andrii, netdev, davem, kuba, edumazet, pabeni, hawk,
john.fastabend, lorenzo.bianconi
Even if it is currently forbidden to XDP_REDIRECT a multi-frag xdp_frame
into a devmap, compute proper xdp_frame length in __xdp_enqueue and
is_valid_dst routines running xdp_get_frame_len().
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
kernel/bpf/devmap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 1400561efb15..a0e02b009487 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -477,7 +477,7 @@ static inline int __xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf,
if (!dev->netdev_ops->ndo_xdp_xmit)
return -EOPNOTSUPP;
- err = xdp_ok_fwd_dev(dev, xdpf->len);
+ err = xdp_ok_fwd_dev(dev, xdp_get_frame_len(xdpf));
if (unlikely(err))
return err;
@@ -536,7 +536,7 @@ static bool is_valid_dst(struct bpf_dtab_netdev *obj, struct xdp_frame *xdpf)
!obj->dev->netdev_ops->ndo_xdp_xmit)
return false;
- if (xdp_ok_fwd_dev(obj->dev, xdpf->len))
+ if (xdp_ok_fwd_dev(obj->dev, xdp_get_frame_len(xdpf)))
return false;
return true;
--
2.36.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH bpf-next] bpf: devmap: compute proper xdp_frame len redirecting frames
2022-07-23 17:17 [PATCH bpf-next] bpf: devmap: compute proper xdp_frame len redirecting frames Lorenzo Bianconi
@ 2022-07-26 14:40 ` patchwork-bot+netdevbpf
0 siblings, 0 replies; 2+ messages in thread
From: patchwork-bot+netdevbpf @ 2022-07-26 14:40 UTC (permalink / raw)
To: Lorenzo Bianconi
Cc: bpf, ast, daniel, andrii, netdev, davem, kuba, edumazet, pabeni,
hawk, john.fastabend, lorenzo.bianconi
Hello:
This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:
On Sat, 23 Jul 2022 19:17:10 +0200 you wrote:
> Even if it is currently forbidden to XDP_REDIRECT a multi-frag xdp_frame
> into a devmap, compute proper xdp_frame length in __xdp_enqueue and
> is_valid_dst routines running xdp_get_frame_len().
>
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
> kernel/bpf/devmap.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Here is the summary with links:
- [bpf-next] bpf: devmap: compute proper xdp_frame len redirecting frames
https://git.kernel.org/bpf/bpf-next/c/bd82ea52f0ee
You are awesome, thank you!
--
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