diff options
| author | Jakub Sitnicki <jakub@cloudflare.com> | 2025-11-05 21:19:42 +0100 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2025-11-10 10:52:31 -0800 |
| commit | efd35c26239bed39193201e958d65e695231ccda (patch) | |
| tree | e76b6f417245b5f4fe29320ec5271d25d51d953b | |
| parent | b85be58e2f7cff47f7477ae61022644a198ee592 (diff) | |
bpf: Make bpf_skb_vlan_pop helper metadata-safe
Use the metadata-aware helper to move packet bytes after skb_pull(),
ensuring metadata remains valid after calling the BPF helper.
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20251105-skb-meta-rx-path-v4-5-5ceb08a9b37b@cloudflare.com
| -rw-r--r-- | include/linux/if_vlan.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index afa5cc61a0fa..4ecc2509b0d4 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -738,9 +738,9 @@ static inline void vlan_remove_tag(struct sk_buff *skb, u16 *vlan_tci) *vlan_tci = ntohs(vhdr->h_vlan_TCI); - memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN); vlan_set_encap_proto(skb, vhdr); __skb_pull(skb, VLAN_HLEN); + skb_postpull_data_move(skb, VLAN_HLEN, 2 * ETH_ALEN); } /** |