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* [PATCH] samples: bpf: add an explict comment to handle nested vlan tagging.
@ 2021-08-09  7:00 Muhammad Falak R Wani
  2021-08-10  9:20 ` patchwork-bot+netdevbpf
  0 siblings, 1 reply; 2+ messages in thread
From: Muhammad Falak R Wani @ 2021-08-09  7:00 UTC (permalink / raw)
  To: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko
  Cc: bpf, netdev, KP Singh, Yonghong Song, Song Liu, Martin KaFai Lau,
	John Fastabend, Jesper Dangaard Brouer, Jakub Kicinski,
	David S . Miller, linux-kernel, Muhammad Falak R Wani

A codeblock for handling nested vlan trips newbies into thinking it as
duplicate code. Explicitly add a comment to clarify.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
---
 samples/bpf/xdp1_kern.c | 2 ++
 samples/bpf/xdp2_kern.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/samples/bpf/xdp1_kern.c b/samples/bpf/xdp1_kern.c
index 34b64394ed9c..f0c5d95084de 100644
--- a/samples/bpf/xdp1_kern.c
+++ b/samples/bpf/xdp1_kern.c
@@ -57,6 +57,7 @@ int xdp_prog1(struct xdp_md *ctx)
 
 	h_proto = eth->h_proto;
 
+	/* Handle VLAN tagged packet */
 	if (h_proto == htons(ETH_P_8021Q) || h_proto == htons(ETH_P_8021AD)) {
 		struct vlan_hdr *vhdr;
 
@@ -66,6 +67,7 @@ int xdp_prog1(struct xdp_md *ctx)
 			return rc;
 		h_proto = vhdr->h_vlan_encapsulated_proto;
 	}
+	/* Handle double VLAN tagged packet */
 	if (h_proto == htons(ETH_P_8021Q) || h_proto == htons(ETH_P_8021AD)) {
 		struct vlan_hdr *vhdr;
 
diff --git a/samples/bpf/xdp2_kern.c b/samples/bpf/xdp2_kern.c
index c787f4b49646..d8a64ab077b0 100644
--- a/samples/bpf/xdp2_kern.c
+++ b/samples/bpf/xdp2_kern.c
@@ -73,6 +73,7 @@ int xdp_prog1(struct xdp_md *ctx)
 
 	h_proto = eth->h_proto;
 
+	/* Handle VLAN tagged packet */
 	if (h_proto == htons(ETH_P_8021Q) || h_proto == htons(ETH_P_8021AD)) {
 		struct vlan_hdr *vhdr;
 
@@ -82,6 +83,7 @@ int xdp_prog1(struct xdp_md *ctx)
 			return rc;
 		h_proto = vhdr->h_vlan_encapsulated_proto;
 	}
+	/* Handle double VLAN tagged packet */
 	if (h_proto == htons(ETH_P_8021Q) || h_proto == htons(ETH_P_8021AD)) {
 		struct vlan_hdr *vhdr;
 
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 2+ messages in thread
* Re: [PATCH] samples: bpf: add an explict comment to handle nested vlan tagging.
  2021-08-09  7:00 [PATCH] samples: bpf: add an explict comment to handle nested vlan tagging Muhammad Falak R Wani
@ 2021-08-10  9:20 ` patchwork-bot+netdevbpf
  0 siblings, 0 replies; 2+ messages in thread
From: patchwork-bot+netdevbpf @ 2021-08-10  9:20 UTC (permalink / raw)
  To: Muhammad Falak R Wani
  Cc: ast, daniel, andrii, bpf, netdev, kpsingh, yhs, songliubraving,
	kafai, john.fastabend, hawk, kuba, davem, linux-kernel

Hello:

This patch was applied to bpf/bpf-next.git (refs/heads/master):

On Mon,  9 Aug 2021 12:30:46 +0530 you wrote:
> A codeblock for handling nested vlan trips newbies into thinking it as
> duplicate code. Explicitly add a comment to clarify.
> 
> Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
> ---
>  samples/bpf/xdp1_kern.c | 2 ++
>  samples/bpf/xdp2_kern.c | 2 ++
>  2 files changed, 4 insertions(+)

Here is the summary with links:
  - samples: bpf: add an explict comment to handle nested vlan tagging.
    https://git.kernel.org/bpf/bpf-next/c/d692a637b4c5

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



^ permalink raw reply	[flat|nested] 2+ messages in thread
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2021-08-10  9:20 ` patchwork-bot+netdevbpf

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