diff options
| author | Eric Woudstra <ericwouds@gmail.com> | 2026-03-10 15:39:33 +0100 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2026-03-13 15:31:15 +0100 |
| commit | a3aca98aec9a278ee56da4f8013bfa1dd1a1c298 (patch) | |
| tree | 9a0ee02e1e0381f9d4e8c536706555275e8ac8c5 /net/netfilter | |
| parent | 598adea720b97572c7028635cb1c59b3684e128c (diff) | |
netfilter: nf_flow_table_ip: reset mac header before vlan push
With double vlan tagged packets in the fastpath, getting the error:
skb_vlan_push got skb with skb->data not at mac header (offset 18)
Call skb_reset_mac_header() before calling skb_vlan_push().
Fixes: c653d5a78f34 ("netfilter: flowtable: inline vlan encapsulation in xmit path")
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_flow_table_ip.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c index 3fdb10d9bf7f..fd56d663cb5b 100644 --- a/net/netfilter/nf_flow_table_ip.c +++ b/net/netfilter/nf_flow_table_ip.c @@ -738,6 +738,7 @@ static int nf_flow_encap_push(struct sk_buff *skb, switch (tuple->encap[i].proto) { case htons(ETH_P_8021Q): case htons(ETH_P_8021AD): + skb_reset_mac_header(skb); if (skb_vlan_push(skb, tuple->encap[i].proto, tuple->encap[i].id) < 0) return -1; |