569da08228
This patch adds support for manipulating vlan/tunnel mappings. The tunnel ids are globally unique and are one per-vlan. There were two trickier issues - first in order to support vlan ranges we have to compute the current tunnel id in the following way: - base tunnel id (attr) + current vlan id - starting vlan id This is in line how the old API does vlan/tunnel mapping with ranges. We already have the vlan range present, so it's redundant to add another attribute for the tunnel range end. It's simply base tunnel id + vlan range. And second to support removing mappings we need an out-of-band way to tell the option manipulating function because there are no special/reserved tunnel id values, so we use a vlan flag to denote the operation is tunnel mapping removal. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Bridge per vlan tunnels
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*
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* Authors:
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* Roopa Prabhu <roopa@cumulusnetworks.com>
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*/
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#ifndef _BR_PRIVATE_TUNNEL_H
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#define _BR_PRIVATE_TUNNEL_H
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struct vtunnel_info {
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u32 tunid;
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u16 vid;
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u16 flags;
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};
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/* br_netlink_tunnel.c */
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int br_parse_vlan_tunnel_info(struct nlattr *attr,
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struct vtunnel_info *tinfo);
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int br_process_vlan_tunnel_info(const struct net_bridge *br,
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const struct net_bridge_port *p,
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int cmd,
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struct vtunnel_info *tinfo_curr,
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struct vtunnel_info *tinfo_last,
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bool *changed);
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int br_get_vlan_tunnel_info_size(struct net_bridge_vlan_group *vg);
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int br_fill_vlan_tunnel_info(struct sk_buff *skb,
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struct net_bridge_vlan_group *vg);
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#ifdef CONFIG_BRIDGE_VLAN_FILTERING
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/* br_vlan_tunnel.c */
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int vlan_tunnel_init(struct net_bridge_vlan_group *vg);
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void vlan_tunnel_deinit(struct net_bridge_vlan_group *vg);
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int nbp_vlan_tunnel_info_delete(const struct net_bridge_port *port, u16 vid);
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int nbp_vlan_tunnel_info_add(const struct net_bridge_port *port, u16 vid,
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u32 tun_id);
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void nbp_vlan_tunnel_info_flush(struct net_bridge_port *port);
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void vlan_tunnel_info_del(struct net_bridge_vlan_group *vg,
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struct net_bridge_vlan *vlan);
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int br_handle_ingress_vlan_tunnel(struct sk_buff *skb,
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struct net_bridge_port *p,
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struct net_bridge_vlan_group *vg);
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int br_handle_egress_vlan_tunnel(struct sk_buff *skb,
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struct net_bridge_vlan *vlan);
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bool vlan_tunid_inrange(const struct net_bridge_vlan *v_curr,
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const struct net_bridge_vlan *v_last);
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int br_vlan_tunnel_info(const struct net_bridge_port *p, int cmd,
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u16 vid, u32 tun_id, bool *changed);
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#else
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static inline int vlan_tunnel_init(struct net_bridge_vlan_group *vg)
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{
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return 0;
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}
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static inline int nbp_vlan_tunnel_info_delete(const struct net_bridge_port *port,
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u16 vid)
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{
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return 0;
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}
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static inline int nbp_vlan_tunnel_info_add(const struct net_bridge_port *port,
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u16 vid, u32 tun_id)
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{
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return 0;
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}
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static inline void nbp_vlan_tunnel_info_flush(struct net_bridge_port *port)
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{
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}
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static inline void vlan_tunnel_info_del(struct net_bridge_vlan_group *vg,
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struct net_bridge_vlan *vlan)
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{
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}
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static inline int br_handle_ingress_vlan_tunnel(struct sk_buff *skb,
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struct net_bridge_port *p,
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struct net_bridge_vlan_group *vg)
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{
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return 0;
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}
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#endif
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#endif
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