From cd6428988bf4fcc41d1deb7dae0e92e62c075c57 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Mon, 25 Feb 2019 16:21:14 -0800 Subject: [PATCH] netfilter: bridge: Don't sabotage nf_hook calls for an l3mdev slave Followup to a173f066c7cf ("netfilter: bridge: Don't sabotage nf_hook calls from an l3mdev"). Some packets (e.g., ndisc) do not have the skb device flipped to the l3mdev (e.g., VRF) device. Update ip_sabotage_in to not drop packets for slave devices too. Currently, neighbor solicitation packets for 'dev -> bridge (addr) -> vrf' setups are getting dropped. This patch enables IPv6 communications for bridges with an address that are enslaved to a VRF. Fixes: 73e20b761acf ("net: vrf: Add support for PREROUTING rules on vrf device") Signed-off-by: David Ahern Signed-off-by: Pablo Neira Ayuso --- net/bridge/br_netfilter_hooks.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c index 40d058378b52..9d34de68571b 100644 --- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -831,7 +831,8 @@ static unsigned int ip_sabotage_in(void *priv, struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); if (nf_bridge && !nf_bridge->in_prerouting && - !netif_is_l3_master(skb->dev)) { + !netif_is_l3_master(skb->dev) && + !netif_is_l3_slave(skb->dev)) { state->okfn(state->net, state->sk, skb); return NF_STOLEN; } -- 2.30.2