diff options
| -rw-r--r-- | net/bridge/br_forward.c | 2 | ||||
| -rw-r--r-- | net/bridge/br_input.c | 8 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 2 | ||||
| -rw-r--r-- | net/bridge/br_private_tunnel.h | 11 | ||||
| -rw-r--r-- | net/bridge/br_vlan.c | 7 | ||||
| -rw-r--r-- | net/bridge/br_vlan_tunnel.c | 54 |
6 files changed, 82 insertions, 2 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index 5a1f8ef49899..6bfac29318f2 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -80,7 +80,7 @@ static void __br_forward(const struct net_bridge_port *to, int br_hook; vg = nbp_vlan_group_rcu(to); - skb = br_handle_vlan(to->br, vg, skb); + skb = br_handle_vlan(to->br, to, vg, skb); if (!skb) return; diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 855b72fbe1da..fba38d8a1a08 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -21,6 +21,7 @@ #include <linux/export.h> #include <linux/rculist.h> #include "br_private.h" +#include "br_private_tunnel.h" /* Hook for brouter */ br_should_route_hook_t __rcu *br_should_route_hook __read_mostly; @@ -57,7 +58,7 @@ static int br_pass_frame_up(struct sk_buff *skb) indev = skb->dev; skb->dev = brdev; - skb = br_handle_vlan(br, vg, skb); + skb = br_handle_vlan(br, NULL, vg, skb); if (!skb) return NET_RX_DROP; /* update the multicast stats if the packet is IGMP/MLD */ @@ -261,6 +262,11 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb) return RX_HANDLER_CONSUMED; p = br_port_get_rcu(skb->dev); + if (p->flags & BR_VLAN_TUNNEL) { + if (br_handle_ingress_vlan_tunnel(skb, p, + nbp_vlan_group_rcu(p))) + goto drop; + } if (unlikely(is_link_local_ether_addr(dest))) { u16 fwd_mask = p->br->group_fwd_mask_required; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 61de90f28afa..40177df45ba6 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -775,6 +775,7 @@ bool br_allowed_egress(struct net_bridge_vlan_group *vg, const struct sk_buff *skb); bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); struct sk_buff *br_handle_vlan(struct net_bridge *br, + const struct net_bridge_port *port, struct net_bridge_vlan_group *vg, struct sk_buff *skb); int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); @@ -874,6 +875,7 @@ static inline bool br_should_learn(struct net_bridge_port *p, } static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, + const struct net_bridge_port *port, struct net_bridge_vlan_group *vg, struct sk_buff *skb) { diff --git a/net/bridge/br_private_tunnel.h b/net/bridge/br_private_tunnel.h index 1c8d0d5302cb..4a447a378ab3 100644 --- a/net/bridge/br_private_tunnel.h +++ b/net/bridge/br_private_tunnel.h @@ -40,6 +40,11 @@ int nbp_vlan_tunnel_info_add(struct net_bridge_port *port, u16 vid, u32 tun_id); void nbp_vlan_tunnel_info_flush(struct net_bridge_port *port); void vlan_tunnel_info_del(struct net_bridge_vlan_group *vg, struct net_bridge_vlan *vlan); +int br_handle_ingress_vlan_tunnel(struct sk_buff *skb, + struct net_bridge_port *p, + struct net_bridge_vlan_group *vg); +int br_handle_egress_vlan_tunnel(struct sk_buff *skb, + struct net_bridge_vlan *vlan); #else static inline int vlan_tunnel_init(struct net_bridge_vlan_group *vg) { @@ -67,6 +72,12 @@ static inline void vlan_tunnel_info_del(struct net_bridge_vlan_group *vg, { } +static inline int br_handle_ingress_vlan_tunnel(struct sk_buff *skb, + struct net_bridge_port *p, + struct net_bridge_vlan_group *vg) +{ + return 0; +} #endif #endif diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 64002e3941ca..62e68c0dc687 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -341,6 +341,7 @@ static void __vlan_flush(struct net_bridge_vlan_group *vg) } struct sk_buff *br_handle_vlan(struct net_bridge *br, + const struct net_bridge_port *p, struct net_bridge_vlan_group *vg, struct sk_buff *skb) { @@ -381,6 +382,12 @@ struct sk_buff *br_handle_vlan(struct net_bridge *br, if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) skb->vlan_tci = 0; + + if (p && (p->flags & BR_VLAN_TUNNEL) && + br_handle_egress_vlan_tunnel(skb, v)) { + kfree_skb(skb); + return NULL; + } out: return skb; } diff --git a/net/bridge/br_vlan_tunnel.c b/net/bridge/br_vlan_tunnel.c index b3fd29d20a3c..b2b79a070162 100644 --- a/net/bridge/br_vlan_tunnel.c +++ b/net/bridge/br_vlan_tunnel.c @@ -39,6 +39,13 @@ static const struct rhashtable_params br_vlan_tunnel_rht_params = { .automatic_shrinking = true, }; +static struct net_bridge_vlan *br_vlan_tunnel_lookup(struct rhashtable *tbl, + u64 tunnel_id) +{ + return rhashtable_lookup_fast(tbl, &tunnel_id, + br_vlan_tunnel_rht_params); +} + void vlan_tunnel_info_del(struct net_bridge_vlan_group *vg, struct net_bridge_vlan *vlan) { @@ -147,3 +154,50 @@ void vlan_tunnel_deinit(struct net_bridge_vlan_group *vg) { rhashtable_destroy(&vg->tunnel_hash); } + +int br_handle_ingress_vlan_tunnel(struct sk_buff *skb, + struct net_bridge_port *p, + struct net_bridge_vlan_group *vg) +{ + struct ip_tunnel_info *tinfo = skb_tunnel_info(skb); + struct net_bridge_vlan *vlan; + + if (!vg || !tinfo) + return 0; + + /* if already tagged, ignore */ + if (skb_vlan_tagged(skb)) + return 0; + + /* lookup vid, given tunnel id */ + vlan = br_vlan_tunnel_lookup(&vg->tunnel_hash, tinfo->key.tun_id); + if (!vlan) + return 0; + + skb_dst_drop(skb); + + __vlan_hwaccel_put_tag(skb, p->br->vlan_proto, vlan->vid); + + return 0; +} + +int br_handle_egress_vlan_tunnel(struct sk_buff *skb, + struct net_bridge_vlan *vlan) +{ + int err; + + if (!vlan || !vlan->tinfo.tunnel_id) + return 0; + + if (unlikely(!skb_vlan_tag_present(skb))) + return 0; + + skb_dst_drop(skb); + err = skb_vlan_pop(skb); + if (err) + return err; + + skb_dst_set(skb, dst_clone(&vlan->tinfo.tunnel_dst->dst)); + + return 0; +} |