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authorFelix Fietkau <nbd@nbd.name>2021-03-24 04:30:35 +0300
committerDavid S. Miller <davem@davemloft.net>2021-03-24 22:48:38 +0300
commitbcf2766b1377421b7c9259865b25c1b62a7fa686 (patch)
treebce4153c39a9dabf1c7d562db02a2f77787b058f /net/8021q
parentec9d16bab615ceda8ac22a7b4d2c7601bbe172cb (diff)
downloadlinux-bcf2766b1377421b7c9259865b25c1b62a7fa686.tar.xz
net: bridge: resolve forwarding path for VLAN tag actions in bridge devices
Depending on the VLAN settings of the bridge and the port, the bridge can either add or remove a tag. When vlan filtering is enabled, the fdb lookup also needs to know the VLAN tag/proto for the destination address To provide this, keep track of the stack of VLAN tags for the path in the lookup context Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q')
-rw-r--r--net/8021q/vlan_dev.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 1b1955a63f7f..4db3f0621959 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -786,6 +786,12 @@ static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx,
path->encap.proto = vlan->vlan_proto;
path->dev = ctx->dev;
ctx->dev = vlan->real_dev;
+ if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan))
+ return -ENOSPC;
+
+ ctx->vlan[ctx->num_vlans].id = vlan->vlan_id;
+ ctx->vlan[ctx->num_vlans].proto = vlan->vlan_proto;
+ ctx->num_vlans++;
return 0;
}