[PATCH v3 nf-next 1/3] netfilter: flow: Add bridge_vid member

[Eric Woudstra <ericwouds@gmail.com>]

Store the vid used on the bridge in the flow_offload_tuple, so it can be
used later to identify fdb entries that relate to the tuple.

The bridge_vid member is added to the structures nft_forward_info,
nf_flow_route and flow_offload_tuple. It can now be passed from
net_device_path->bridge.vlan_id to flow_offload_tuple->out.bridge_vid.

Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
---
 include/net/netfilter/nf_flow_table.h | 2 ++
 net/netfilter/nf_flow_table_core.c    | 1 +
 net/netfilter/nft_flow_offload.c      | 3 +++
 3 files changed, 6 insertions(+)

diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h
index d711642e78b5..9d9363e91587 100644
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -146,6 +146,7 @@ struct flow_offload_tuple {
 		struct {
 			u32		ifidx;
 			u32		hw_ifidx;
+			u16		bridge_vid;
 			u8		h_source[ETH_ALEN];
 			u8		h_dest[ETH_ALEN];
 		} out;
@@ -212,6 +213,7 @@ struct nf_flow_route {
 		struct {
 			u32			ifindex;
 			u32			hw_ifindex;
+			u16			bridge_vid;
 			u8			h_source[ETH_ALEN];
 			u8			h_dest[ETH_ALEN];
 		} out;
diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index 9441ac3d8c1a..992958db4a19 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -128,6 +128,7 @@ static int flow_offload_fill_route(struct flow_offload *flow,
 		       ETH_ALEN);
 		flow_tuple->out.ifidx = route->tuple[dir].out.ifindex;
 		flow_tuple->out.hw_ifidx = route->tuple[dir].out.hw_ifindex;
+		flow_tuple->out.bridge_vid = route->tuple[dir].out.bridge_vid;
 		dst_release(dst);
 		break;
 	case FLOW_OFFLOAD_XMIT_XFRM:
diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index fdf927a8252d..31372a8ef37e 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -85,6 +85,7 @@ struct nft_forward_info {
 		__u16	id;
 		__be16	proto;
 	} encap[NF_FLOW_TABLE_ENCAP_MAX];
+	u16 bridge_vid;
 	u8 num_encaps;
 	u8 ingress_vlans;
 	u8 h_source[ETH_ALEN];
@@ -159,6 +160,7 @@ static void nft_dev_path_info(const struct net_device_path_stack *stack,
 			case DEV_PATH_BR_VLAN_KEEP:
 				break;
 			}
+			info->bridge_vid = path->bridge.vlan_id;
 			info->xmit_type = FLOW_OFFLOAD_XMIT_DIRECT;
 			break;
 		default:
@@ -223,6 +225,7 @@ static void nft_dev_forward_path(struct nf_flow_route *route,
 		memcpy(route->tuple[dir].out.h_dest, info.h_dest, ETH_ALEN);
 		route->tuple[dir].out.ifindex = info.outdev->ifindex;
 		route->tuple[dir].out.hw_ifindex = info.hw_outdev->ifindex;
+		route->tuple[dir].out.bridge_vid = info.bridge_vid;
 		route->tuple[dir].xmit_type = info.xmit_type;
 	}
 }
-- 
2.47.1