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1722 lines
48 KiB
1722 lines
48 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Linux ethernet bridge |
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* |
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* Authors: |
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* Lennert Buytenhek <[email protected]> |
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*/ |
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|
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#ifndef _BR_PRIVATE_H |
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#define _BR_PRIVATE_H |
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#include <linux/netdevice.h> |
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#include <linux/if_bridge.h> |
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#include <linux/netpoll.h> |
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#include <linux/u64_stats_sync.h> |
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#include <net/route.h> |
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#include <net/ip6_fib.h> |
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#include <linux/if_vlan.h> |
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#include <linux/rhashtable.h> |
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#include <linux/refcount.h> |
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#define BR_HASH_BITS 8 |
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#define BR_HASH_SIZE (1 << BR_HASH_BITS) |
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#define BR_HOLD_TIME (1*HZ) |
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#define BR_PORT_BITS 10 |
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#define BR_MAX_PORTS (1<<BR_PORT_BITS) |
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#define BR_MULTICAST_DEFAULT_HASH_MAX 4096 |
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#define BR_VERSION "2.3" |
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/* Control of forwarding link local multicast */ |
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#define BR_GROUPFWD_DEFAULT 0 |
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/* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ |
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enum { |
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BR_GROUPFWD_STP = BIT(0), |
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BR_GROUPFWD_MACPAUSE = BIT(1), |
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BR_GROUPFWD_LACP = BIT(2), |
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}; |
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#define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ |
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BR_GROUPFWD_LACP) |
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/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ |
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#define BR_GROUPFWD_8021AD 0xB801u |
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/* Path to usermode spanning tree program */ |
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#define BR_STP_PROG "/sbin/bridge-stp" |
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#define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) |
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typedef struct bridge_id bridge_id; |
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typedef struct mac_addr mac_addr; |
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typedef __u16 port_id; |
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struct bridge_id { |
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unsigned char prio[2]; |
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unsigned char addr[ETH_ALEN]; |
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}; |
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struct mac_addr { |
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unsigned char addr[ETH_ALEN]; |
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}; |
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
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/* our own querier */ |
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struct bridge_mcast_own_query { |
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struct timer_list timer; |
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u32 startup_sent; |
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}; |
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/* other querier */ |
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struct bridge_mcast_other_query { |
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struct timer_list timer; |
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unsigned long delay_time; |
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}; |
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/* selected querier */ |
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struct bridge_mcast_querier { |
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struct br_ip addr; |
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struct net_bridge_port __rcu *port; |
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}; |
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/* IGMP/MLD statistics */ |
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struct bridge_mcast_stats { |
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struct br_mcast_stats mstats; |
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struct u64_stats_sync syncp; |
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}; |
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#endif |
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struct br_tunnel_info { |
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__be64 tunnel_id; |
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struct metadata_dst __rcu *tunnel_dst; |
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}; |
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/* private vlan flags */ |
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enum { |
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BR_VLFLAG_PER_PORT_STATS = BIT(0), |
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BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), |
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}; |
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/** |
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* struct net_bridge_vlan - per-vlan entry |
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* |
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* @vnode: rhashtable member |
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* @vid: VLAN id |
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* @flags: bridge vlan flags |
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* @priv_flags: private (in-kernel) bridge vlan flags |
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* @state: STP state (e.g. blocking, learning, forwarding) |
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* @stats: per-cpu VLAN statistics |
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* @br: if MASTER flag set, this points to a bridge struct |
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* @port: if MASTER flag unset, this points to a port struct |
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* @refcnt: if MASTER flag set, this is bumped for each port referencing it |
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* @brvlan: if MASTER flag unset, this points to the global per-VLAN context |
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* for this VLAN entry |
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* @vlist: sorted list of VLAN entries |
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* @rcu: used for entry destruction |
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* |
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* This structure is shared between the global per-VLAN entries contained in |
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* the bridge rhashtable and the local per-port per-VLAN entries contained in |
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* the port's rhashtable. The union entries should be interpreted depending on |
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* the entry flags that are set. |
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*/ |
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struct net_bridge_vlan { |
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struct rhash_head vnode; |
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struct rhash_head tnode; |
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u16 vid; |
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u16 flags; |
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u16 priv_flags; |
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u8 state; |
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struct pcpu_sw_netstats __percpu *stats; |
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union { |
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struct net_bridge *br; |
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struct net_bridge_port *port; |
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}; |
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union { |
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refcount_t refcnt; |
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struct net_bridge_vlan *brvlan; |
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}; |
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struct br_tunnel_info tinfo; |
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struct list_head vlist; |
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struct rcu_head rcu; |
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}; |
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/** |
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* struct net_bridge_vlan_group |
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* |
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* @vlan_hash: VLAN entry rhashtable |
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* @vlan_list: sorted VLAN entry list |
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* @num_vlans: number of total VLAN entries |
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* @pvid: PVID VLAN id |
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* @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) |
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* |
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* IMPORTANT: Be careful when checking if there're VLAN entries using list |
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* primitives because the bridge can have entries in its list which |
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* are just for global context but not for filtering, i.e. they have |
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* the master flag set but not the brentry flag. If you have to check |
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* if there're "real" entries in the bridge please test @num_vlans |
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*/ |
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struct net_bridge_vlan_group { |
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struct rhashtable vlan_hash; |
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struct rhashtable tunnel_hash; |
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struct list_head vlan_list; |
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u16 num_vlans; |
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u16 pvid; |
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u8 pvid_state; |
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}; |
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/* bridge fdb flags */ |
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enum { |
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BR_FDB_LOCAL, |
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BR_FDB_STATIC, |
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BR_FDB_STICKY, |
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BR_FDB_ADDED_BY_USER, |
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BR_FDB_ADDED_BY_EXT_LEARN, |
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BR_FDB_OFFLOADED, |
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BR_FDB_NOTIFY, |
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BR_FDB_NOTIFY_INACTIVE |
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}; |
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struct net_bridge_fdb_key { |
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mac_addr addr; |
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u16 vlan_id; |
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}; |
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struct net_bridge_fdb_entry { |
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struct rhash_head rhnode; |
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struct net_bridge_port *dst; |
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struct net_bridge_fdb_key key; |
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struct hlist_node fdb_node; |
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unsigned long flags; |
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/* write-heavy members should not affect lookups */ |
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unsigned long updated ____cacheline_aligned_in_smp; |
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unsigned long used; |
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struct rcu_head rcu; |
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}; |
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#define MDB_PG_FLAGS_PERMANENT BIT(0) |
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#define MDB_PG_FLAGS_OFFLOAD BIT(1) |
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#define MDB_PG_FLAGS_FAST_LEAVE BIT(2) |
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#define MDB_PG_FLAGS_STAR_EXCL BIT(3) |
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#define MDB_PG_FLAGS_BLOCKED BIT(4) |
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#define PG_SRC_ENT_LIMIT 32 |
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#define BR_SGRP_F_DELETE BIT(0) |
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#define BR_SGRP_F_SEND BIT(1) |
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#define BR_SGRP_F_INSTALLED BIT(2) |
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struct net_bridge_mcast_gc { |
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struct hlist_node gc_node; |
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void (*destroy)(struct net_bridge_mcast_gc *gc); |
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}; |
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struct net_bridge_group_src { |
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struct hlist_node node; |
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struct br_ip addr; |
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struct net_bridge_port_group *pg; |
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u8 flags; |
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u8 src_query_rexmit_cnt; |
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struct timer_list timer; |
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struct net_bridge *br; |
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struct net_bridge_mcast_gc mcast_gc; |
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struct rcu_head rcu; |
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}; |
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struct net_bridge_port_group_sg_key { |
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struct net_bridge_port *port; |
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struct br_ip addr; |
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}; |
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struct net_bridge_port_group { |
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struct net_bridge_port_group __rcu *next; |
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struct net_bridge_port_group_sg_key key; |
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unsigned char eth_addr[ETH_ALEN] __aligned(2); |
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unsigned char flags; |
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unsigned char filter_mode; |
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unsigned char grp_query_rexmit_cnt; |
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unsigned char rt_protocol; |
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struct hlist_head src_list; |
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unsigned int src_ents; |
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struct timer_list timer; |
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struct timer_list rexmit_timer; |
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struct hlist_node mglist; |
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struct rb_root eht_set_tree; |
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struct rb_root eht_host_tree; |
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struct rhash_head rhnode; |
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struct net_bridge_mcast_gc mcast_gc; |
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struct rcu_head rcu; |
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}; |
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struct net_bridge_mdb_entry { |
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struct rhash_head rhnode; |
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struct net_bridge *br; |
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struct net_bridge_port_group __rcu *ports; |
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struct br_ip addr; |
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bool host_joined; |
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struct timer_list timer; |
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struct hlist_node mdb_node; |
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struct net_bridge_mcast_gc mcast_gc; |
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struct rcu_head rcu; |
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}; |
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struct net_bridge_port { |
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struct net_bridge *br; |
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struct net_device *dev; |
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struct list_head list; |
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unsigned long flags; |
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#ifdef CONFIG_BRIDGE_VLAN_FILTERING |
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struct net_bridge_vlan_group __rcu *vlgrp; |
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#endif |
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struct net_bridge_port __rcu *backup_port; |
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/* STP */ |
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u8 priority; |
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u8 state; |
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u16 port_no; |
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unsigned char topology_change_ack; |
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unsigned char config_pending; |
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port_id port_id; |
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port_id designated_port; |
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bridge_id designated_root; |
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bridge_id designated_bridge; |
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u32 path_cost; |
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u32 designated_cost; |
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unsigned long designated_age; |
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struct timer_list forward_delay_timer; |
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struct timer_list hold_timer; |
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struct timer_list message_age_timer; |
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struct kobject kobj; |
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struct rcu_head rcu; |
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
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struct bridge_mcast_own_query ip4_own_query; |
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struct timer_list ip4_mc_router_timer; |
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struct hlist_node ip4_rlist; |
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#if IS_ENABLED(CONFIG_IPV6) |
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struct bridge_mcast_own_query ip6_own_query; |
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struct timer_list ip6_mc_router_timer; |
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struct hlist_node ip6_rlist; |
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#endif /* IS_ENABLED(CONFIG_IPV6) */ |
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u32 multicast_eht_hosts_limit; |
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u32 multicast_eht_hosts_cnt; |
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unsigned char multicast_router; |
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struct bridge_mcast_stats __percpu *mcast_stats; |
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struct hlist_head mglist; |
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#endif |
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#ifdef CONFIG_SYSFS |
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char sysfs_name[IFNAMSIZ]; |
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#endif |
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#ifdef CONFIG_NET_POLL_CONTROLLER |
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struct netpoll *np; |
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#endif |
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#ifdef CONFIG_NET_SWITCHDEV |
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int offload_fwd_mark; |
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#endif |
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u16 group_fwd_mask; |
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u16 backup_redirected_cnt; |
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struct bridge_stp_xstats stp_xstats; |
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}; |
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#define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) |
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#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
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#define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
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static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
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{ |
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return rcu_dereference(dev->rx_handler_data); |
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} |
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static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
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{ |
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return netif_is_bridge_port(dev) ? |
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rtnl_dereference(dev->rx_handler_data) : NULL; |
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} |
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static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) |
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{ |
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return netif_is_bridge_port(dev) ? |
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rcu_dereference_rtnl(dev->rx_handler_data) : NULL; |
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} |
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enum net_bridge_opts { |
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BROPT_VLAN_ENABLED, |
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BROPT_VLAN_STATS_ENABLED, |
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BROPT_NF_CALL_IPTABLES, |
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BROPT_NF_CALL_IP6TABLES, |
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BROPT_NF_CALL_ARPTABLES, |
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BROPT_GROUP_ADDR_SET, |
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BROPT_MULTICAST_ENABLED, |
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BROPT_MULTICAST_QUERIER, |
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BROPT_MULTICAST_QUERY_USE_IFADDR, |
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BROPT_MULTICAST_STATS_ENABLED, |
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BROPT_HAS_IPV6_ADDR, |
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BROPT_NEIGH_SUPPRESS_ENABLED, |
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BROPT_MTU_SET_BY_USER, |
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BROPT_VLAN_STATS_PER_PORT, |
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BROPT_NO_LL_LEARN, |
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BROPT_VLAN_BRIDGE_BINDING, |
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}; |
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struct net_bridge { |
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spinlock_t lock; |
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spinlock_t hash_lock; |
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struct hlist_head frame_type_list; |
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struct net_device *dev; |
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unsigned long options; |
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/* These fields are accessed on each packet */ |
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#ifdef CONFIG_BRIDGE_VLAN_FILTERING |
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__be16 vlan_proto; |
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u16 default_pvid; |
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struct net_bridge_vlan_group __rcu *vlgrp; |
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#endif |
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struct rhashtable fdb_hash_tbl; |
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struct list_head port_list; |
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
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union { |
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struct rtable fake_rtable; |
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struct rt6_info fake_rt6_info; |
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}; |
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#endif |
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u16 group_fwd_mask; |
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u16 group_fwd_mask_required; |
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/* STP */ |
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bridge_id designated_root; |
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bridge_id bridge_id; |
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unsigned char topology_change; |
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unsigned char topology_change_detected; |
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u16 root_port; |
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unsigned long max_age; |
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unsigned long hello_time; |
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unsigned long forward_delay; |
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unsigned long ageing_time; |
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unsigned long bridge_max_age; |
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unsigned long bridge_hello_time; |
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unsigned long bridge_forward_delay; |
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unsigned long bridge_ageing_time; |
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u32 root_path_cost; |
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u8 group_addr[ETH_ALEN]; |
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enum { |
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BR_NO_STP, /* no spanning tree */ |
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BR_KERNEL_STP, /* old STP in kernel */ |
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BR_USER_STP, /* new RSTP in userspace */ |
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} stp_enabled; |
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
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u32 hash_max; |
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u32 multicast_last_member_count; |
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u32 multicast_startup_query_count; |
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u8 multicast_igmp_version; |
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u8 multicast_router; |
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#if IS_ENABLED(CONFIG_IPV6) |
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u8 multicast_mld_version; |
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#endif |
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spinlock_t multicast_lock; |
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unsigned long multicast_last_member_interval; |
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unsigned long multicast_membership_interval; |
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unsigned long multicast_querier_interval; |
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unsigned long multicast_query_interval; |
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unsigned long multicast_query_response_interval; |
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unsigned long multicast_startup_query_interval; |
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struct rhashtable mdb_hash_tbl; |
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struct rhashtable sg_port_tbl; |
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struct hlist_head mcast_gc_list; |
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struct hlist_head mdb_list; |
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struct hlist_head ip4_mc_router_list; |
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struct timer_list ip4_mc_router_timer; |
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struct bridge_mcast_other_query ip4_other_query; |
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struct bridge_mcast_own_query ip4_own_query; |
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struct bridge_mcast_querier ip4_querier; |
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struct bridge_mcast_stats __percpu *mcast_stats; |
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#if IS_ENABLED(CONFIG_IPV6) |
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struct hlist_head ip6_mc_router_list; |
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struct timer_list ip6_mc_router_timer; |
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struct bridge_mcast_other_query ip6_other_query; |
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struct bridge_mcast_own_query ip6_own_query; |
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struct bridge_mcast_querier ip6_querier; |
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#endif /* IS_ENABLED(CONFIG_IPV6) */ |
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struct work_struct mcast_gc_work; |
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#endif |
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struct timer_list hello_timer; |
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struct timer_list tcn_timer; |
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struct timer_list topology_change_timer; |
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struct delayed_work gc_work; |
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struct kobject *ifobj; |
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u32 auto_cnt; |
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#ifdef CONFIG_NET_SWITCHDEV |
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int offload_fwd_mark; |
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#endif |
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struct hlist_head fdb_list; |
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#if IS_ENABLED(CONFIG_BRIDGE_MRP) |
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struct hlist_head mrp_list; |
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#endif |
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#if IS_ENABLED(CONFIG_BRIDGE_CFM) |
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struct hlist_head mep_list; |
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#endif |
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}; |
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struct br_input_skb_cb { |
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struct net_device *brdev; |
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u16 frag_max_size; |
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
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u8 igmp; |
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u8 mrouters_only:1; |
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#endif |
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u8 proxyarp_replied:1; |
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u8 src_port_isolated:1; |
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#ifdef CONFIG_BRIDGE_VLAN_FILTERING |
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u8 vlan_filtered:1; |
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#endif |
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#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE |
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u8 br_netfilter_broute:1; |
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#endif |
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#ifdef CONFIG_NET_SWITCHDEV |
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int offload_fwd_mark; |
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#endif |
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}; |
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#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) |
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
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# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) |
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#else |
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# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) |
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#endif |
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#define br_printk(level, br, format, args...) \ |
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printk(level "%s: " format, (br)->dev->name, ##args) |
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#define br_err(__br, format, args...) \ |
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br_printk(KERN_ERR, __br, format, ##args) |
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#define br_warn(__br, format, args...) \ |
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br_printk(KERN_WARNING, __br, format, ##args) |
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#define br_notice(__br, format, args...) \ |
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br_printk(KERN_NOTICE, __br, format, ##args) |
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#define br_info(__br, format, args...) \ |
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br_printk(KERN_INFO, __br, format, ##args) |
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#define br_debug(br, format, args...) \ |
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pr_debug("%s: " format, (br)->dev->name, ##args) |
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|
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/* called under bridge lock */ |
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static inline int br_is_root_bridge(const struct net_bridge *br) |
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{ |
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return !memcmp(&br->bridge_id, &br->designated_root, 8); |
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} |
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|
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/* check if a VLAN entry is global */ |
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static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) |
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{ |
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return v->flags & BRIDGE_VLAN_INFO_MASTER; |
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} |
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|
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/* check if a VLAN entry is used by the bridge */ |
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static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) |
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{ |
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return v->flags & BRIDGE_VLAN_INFO_BRENTRY; |
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} |
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|
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/* check if we should use the vlan entry, returns false if it's only context */ |
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static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) |
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{ |
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if (br_vlan_is_master(v)) { |
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if (br_vlan_is_brentry(v)) |
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return true; |
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else |
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return false; |
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} |
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return true; |
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} |
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static inline bool nbp_state_should_learn(const struct net_bridge_port *p) |
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{ |
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return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; |
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} |
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static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) |
|
{ |
|
bool ret = vid > 0 && vid < VLAN_VID_MASK; |
|
|
|
if (!ret) |
|
NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); |
|
|
|
return ret; |
|
} |
|
|
|
static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, |
|
const struct bridge_vlan_info *last, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
/* pvid flag is not allowed in ranges */ |
|
if (cur->flags & BRIDGE_VLAN_INFO_PVID) { |
|
NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); |
|
return false; |
|
} |
|
|
|
/* when cur is the range end, check if: |
|
* - it has range start flag |
|
* - range ids are invalid (end is equal to or before start) |
|
*/ |
|
if (last) { |
|
if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
|
NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); |
|
return false; |
|
} else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { |
|
NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); |
|
return false; |
|
} else if (cur->vid <= last->vid) { |
|
NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); |
|
return false; |
|
} |
|
} |
|
|
|
/* check for required range flags */ |
|
if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | |
|
BRIDGE_VLAN_INFO_RANGE_END))) { |
|
NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
static inline int br_afspec_cmd_to_rtm(int cmd) |
|
{ |
|
switch (cmd) { |
|
case RTM_SETLINK: |
|
return RTM_NEWVLAN; |
|
case RTM_DELLINK: |
|
return RTM_DELVLAN; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static inline int br_opt_get(const struct net_bridge *br, |
|
enum net_bridge_opts opt) |
|
{ |
|
return test_bit(opt, &br->options); |
|
} |
|
|
|
int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, |
|
struct netlink_ext_ack *extack); |
|
int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); |
|
int br_boolopt_multi_toggle(struct net_bridge *br, |
|
struct br_boolopt_multi *bm, |
|
struct netlink_ext_ack *extack); |
|
void br_boolopt_multi_get(const struct net_bridge *br, |
|
struct br_boolopt_multi *bm); |
|
void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); |
|
|
|
/* br_device.c */ |
|
void br_dev_setup(struct net_device *dev); |
|
void br_dev_delete(struct net_device *dev, struct list_head *list); |
|
netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); |
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
|
struct sk_buff *skb) |
|
{ |
|
netpoll_send_skb(p->np, skb); |
|
} |
|
|
|
int br_netpoll_enable(struct net_bridge_port *p); |
|
void br_netpoll_disable(struct net_bridge_port *p); |
|
#else |
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
|
struct sk_buff *skb) |
|
{ |
|
} |
|
|
|
static inline int br_netpoll_enable(struct net_bridge_port *p) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_netpoll_disable(struct net_bridge_port *p) |
|
{ |
|
} |
|
#endif |
|
|
|
/* br_fdb.c */ |
|
int br_fdb_init(void); |
|
void br_fdb_fini(void); |
|
int br_fdb_hash_init(struct net_bridge *br); |
|
void br_fdb_hash_fini(struct net_bridge *br); |
|
void br_fdb_flush(struct net_bridge *br); |
|
void br_fdb_find_delete_local(struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
const unsigned char *addr, u16 vid); |
|
void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
|
void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
|
void br_fdb_cleanup(struct work_struct *work); |
|
void br_fdb_delete_by_port(struct net_bridge *br, |
|
const struct net_bridge_port *p, u16 vid, int do_all); |
|
struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, |
|
const unsigned char *addr, |
|
__u16 vid); |
|
int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
|
int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, |
|
unsigned long off); |
|
int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, |
|
const unsigned char *addr, u16 vid); |
|
void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, |
|
const unsigned char *addr, u16 vid, unsigned long flags); |
|
|
|
int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
|
struct net_device *dev, const unsigned char *addr, u16 vid); |
|
int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, |
|
const unsigned char *addr, u16 vid, u16 nlh_flags, |
|
struct netlink_ext_ack *extack); |
|
int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
|
struct net_device *dev, struct net_device *fdev, int *idx); |
|
int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, |
|
const unsigned char *addr, u16 vid, u32 portid, u32 seq, |
|
struct netlink_ext_ack *extack); |
|
int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
|
void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); |
|
int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, |
|
const unsigned char *addr, u16 vid, |
|
bool swdev_notify); |
|
int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, |
|
const unsigned char *addr, u16 vid, |
|
bool swdev_notify); |
|
void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, |
|
const unsigned char *addr, u16 vid, bool offloaded); |
|
|
|
/* br_forward.c */ |
|
enum br_pkt_type { |
|
BR_PKT_UNICAST, |
|
BR_PKT_MULTICAST, |
|
BR_PKT_BROADCAST |
|
}; |
|
int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); |
|
void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, |
|
bool local_rcv, bool local_orig); |
|
int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); |
|
void br_flood(struct net_bridge *br, struct sk_buff *skb, |
|
enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); |
|
|
|
/* return true if both source port and dest port are isolated */ |
|
static inline bool br_skb_isolated(const struct net_bridge_port *to, |
|
const struct sk_buff *skb) |
|
{ |
|
return BR_INPUT_SKB_CB(skb)->src_port_isolated && |
|
(to->flags & BR_ISOLATED); |
|
} |
|
|
|
/* br_if.c */ |
|
void br_port_carrier_check(struct net_bridge_port *p, bool *notified); |
|
int br_add_bridge(struct net *net, const char *name); |
|
int br_del_bridge(struct net *net, const char *name); |
|
int br_add_if(struct net_bridge *br, struct net_device *dev, |
|
struct netlink_ext_ack *extack); |
|
int br_del_if(struct net_bridge *br, struct net_device *dev); |
|
void br_mtu_auto_adjust(struct net_bridge *br); |
|
netdev_features_t br_features_recompute(struct net_bridge *br, |
|
netdev_features_t features); |
|
void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
|
void br_manage_promisc(struct net_bridge *br); |
|
int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); |
|
|
|
/* br_input.c */ |
|
int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); |
|
rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); |
|
|
|
struct br_frame_type { |
|
__be16 type; |
|
int (*frame_handler)(struct net_bridge_port *port, |
|
struct sk_buff *skb); |
|
struct hlist_node list; |
|
}; |
|
|
|
void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); |
|
void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); |
|
|
|
static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
|
{ |
|
return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); |
|
} |
|
|
|
static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) |
|
{ |
|
return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); |
|
} |
|
|
|
static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) |
|
{ |
|
return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; |
|
} |
|
|
|
static inline struct net_bridge_port * |
|
br_port_get_check_rtnl(const struct net_device *dev) |
|
{ |
|
return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; |
|
} |
|
|
|
/* br_ioctl.c */ |
|
int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
|
int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, |
|
void __user *arg); |
|
|
|
/* br_multicast.c */ |
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
|
int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
|
struct sk_buff *skb, u16 vid); |
|
struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
|
struct sk_buff *skb, u16 vid); |
|
int br_multicast_add_port(struct net_bridge_port *port); |
|
void br_multicast_del_port(struct net_bridge_port *port); |
|
void br_multicast_enable_port(struct net_bridge_port *port); |
|
void br_multicast_disable_port(struct net_bridge_port *port); |
|
void br_multicast_init(struct net_bridge *br); |
|
void br_multicast_join_snoopers(struct net_bridge *br); |
|
void br_multicast_leave_snoopers(struct net_bridge *br); |
|
void br_multicast_open(struct net_bridge *br); |
|
void br_multicast_stop(struct net_bridge *br); |
|
void br_multicast_dev_del(struct net_bridge *br); |
|
void br_multicast_flood(struct net_bridge_mdb_entry *mdst, |
|
struct sk_buff *skb, bool local_rcv, bool local_orig); |
|
int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
|
int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); |
|
int br_multicast_toggle(struct net_bridge *br, unsigned long val, |
|
struct netlink_ext_ack *extack); |
|
int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
|
int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
|
int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val); |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val); |
|
#endif |
|
struct net_bridge_mdb_entry * |
|
br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); |
|
struct net_bridge_mdb_entry * |
|
br_multicast_new_group(struct net_bridge *br, struct br_ip *group); |
|
struct net_bridge_port_group * |
|
br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, |
|
struct net_bridge_port_group __rcu *next, |
|
unsigned char flags, const unsigned char *src, |
|
u8 filter_mode, u8 rt_protocol); |
|
int br_mdb_hash_init(struct net_bridge *br); |
|
void br_mdb_hash_fini(struct net_bridge *br); |
|
void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, |
|
struct net_bridge_port_group *pg, int type); |
|
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port, |
|
int type); |
|
void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, |
|
struct net_bridge_port_group *pg, |
|
struct net_bridge_port_group __rcu **pp); |
|
void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p, |
|
const struct sk_buff *skb, u8 type, u8 dir); |
|
int br_multicast_init_stats(struct net_bridge *br); |
|
void br_multicast_uninit_stats(struct net_bridge *br); |
|
void br_multicast_get_stats(const struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
struct br_mcast_stats *dest); |
|
void br_mdb_init(void); |
|
void br_mdb_uninit(void); |
|
void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify); |
|
void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); |
|
void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, |
|
u8 filter_mode); |
|
void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, |
|
struct net_bridge_port_group *sg); |
|
struct net_bridge_group_src * |
|
br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); |
|
void br_multicast_del_group_src(struct net_bridge_group_src *src, |
|
bool fastleave); |
|
|
|
static inline bool br_group_is_l2(const struct br_ip *group) |
|
{ |
|
return group->proto == 0; |
|
} |
|
|
|
#define mlock_dereference(X, br) \ |
|
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) |
|
|
|
static inline struct hlist_node * |
|
br_multicast_get_first_rport_node(struct net_bridge *b, struct sk_buff *skb) { |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
if (skb->protocol == htons(ETH_P_IPV6)) |
|
return rcu_dereference(hlist_first_rcu(&b->ip6_mc_router_list)); |
|
#endif |
|
return rcu_dereference(hlist_first_rcu(&b->ip4_mc_router_list)); |
|
} |
|
|
|
static inline struct net_bridge_port * |
|
br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) { |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
if (skb->protocol == htons(ETH_P_IPV6)) |
|
return hlist_entry_safe(rp, struct net_bridge_port, ip6_rlist); |
|
#endif |
|
return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); |
|
} |
|
|
|
static inline bool br_ip4_multicast_is_router(struct net_bridge *br) |
|
{ |
|
return timer_pending(&br->ip4_mc_router_timer); |
|
} |
|
|
|
static inline bool br_ip6_multicast_is_router(struct net_bridge *br) |
|
{ |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
return timer_pending(&br->ip6_mc_router_timer); |
|
#else |
|
return false; |
|
#endif |
|
} |
|
|
|
static inline bool |
|
br_multicast_is_router(struct net_bridge *br, struct sk_buff *skb) |
|
{ |
|
switch (br->multicast_router) { |
|
case MDB_RTR_TYPE_PERM: |
|
return true; |
|
case MDB_RTR_TYPE_TEMP_QUERY: |
|
if (skb) { |
|
if (skb->protocol == htons(ETH_P_IP)) |
|
return br_ip4_multicast_is_router(br); |
|
else if (skb->protocol == htons(ETH_P_IPV6)) |
|
return br_ip6_multicast_is_router(br); |
|
} else { |
|
return br_ip4_multicast_is_router(br) || |
|
br_ip6_multicast_is_router(br); |
|
} |
|
fallthrough; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static inline bool |
|
__br_multicast_querier_exists(struct net_bridge *br, |
|
struct bridge_mcast_other_query *querier, |
|
const bool is_ipv6) |
|
{ |
|
bool own_querier_enabled; |
|
|
|
if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) { |
|
if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR)) |
|
own_querier_enabled = false; |
|
else |
|
own_querier_enabled = true; |
|
} else { |
|
own_querier_enabled = false; |
|
} |
|
|
|
return time_is_before_jiffies(querier->delay_time) && |
|
(own_querier_enabled || timer_pending(&querier->timer)); |
|
} |
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br, |
|
struct ethhdr *eth, |
|
const struct net_bridge_mdb_entry *mdb) |
|
{ |
|
switch (eth->h_proto) { |
|
case (htons(ETH_P_IP)): |
|
return __br_multicast_querier_exists(br, |
|
&br->ip4_other_query, false); |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
case (htons(ETH_P_IPV6)): |
|
return __br_multicast_querier_exists(br, |
|
&br->ip6_other_query, true); |
|
#endif |
|
default: |
|
return !!mdb && br_group_is_l2(&mdb->addr); |
|
} |
|
} |
|
|
|
static inline bool br_multicast_is_star_g(const struct br_ip *ip) |
|
{ |
|
switch (ip->proto) { |
|
case htons(ETH_P_IP): |
|
return ipv4_is_zeronet(ip->src.ip4); |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
case htons(ETH_P_IPV6): |
|
return ipv6_addr_any(&ip->src.ip6); |
|
#endif |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static inline bool br_multicast_should_handle_mode(const struct net_bridge *br, |
|
__be16 proto) |
|
{ |
|
switch (proto) { |
|
case htons(ETH_P_IP): |
|
return !!(br->multicast_igmp_version == 3); |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
case htons(ETH_P_IPV6): |
|
return !!(br->multicast_mld_version == 2); |
|
#endif |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static inline int br_multicast_igmp_type(const struct sk_buff *skb) |
|
{ |
|
return BR_INPUT_SKB_CB(skb)->igmp; |
|
} |
|
|
|
static inline unsigned long br_multicast_lmqt(const struct net_bridge *br) |
|
{ |
|
return br->multicast_last_member_interval * |
|
br->multicast_last_member_count; |
|
} |
|
|
|
static inline unsigned long br_multicast_gmi(const struct net_bridge *br) |
|
{ |
|
/* use the RFC default of 2 for QRV */ |
|
return 2 * br->multicast_query_interval + |
|
br->multicast_query_response_interval; |
|
} |
|
#else |
|
static inline int br_multicast_rcv(struct net_bridge *br, |
|
struct net_bridge_port *port, |
|
struct sk_buff *skb, |
|
u16 vid) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
|
struct sk_buff *skb, u16 vid) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline int br_multicast_add_port(struct net_bridge_port *port) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_multicast_del_port(struct net_bridge_port *port) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_enable_port(struct net_bridge_port *port) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_disable_port(struct net_bridge_port *port) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_init(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_join_snoopers(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_leave_snoopers(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_open(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_stop(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_dev_del(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, |
|
struct sk_buff *skb, |
|
bool local_rcv, bool local_orig) |
|
{ |
|
} |
|
|
|
static inline bool br_multicast_is_router(struct net_bridge *br, |
|
struct sk_buff *skb) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br, |
|
struct ethhdr *eth, |
|
const struct net_bridge_mdb_entry *mdb) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline void br_mdb_init(void) |
|
{ |
|
} |
|
|
|
static inline void br_mdb_uninit(void) |
|
{ |
|
} |
|
|
|
static inline int br_mdb_hash_init(struct net_bridge *br) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_mdb_hash_fini(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_multicast_count(struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
const struct sk_buff *skb, |
|
u8 type, u8 dir) |
|
{ |
|
} |
|
|
|
static inline int br_multicast_init_stats(struct net_bridge *br) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_multicast_uninit_stats(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline int br_multicast_igmp_type(const struct sk_buff *skb) |
|
{ |
|
return 0; |
|
} |
|
#endif |
|
|
|
/* br_vlan.c */ |
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING |
|
bool br_allowed_ingress(const struct net_bridge *br, |
|
struct net_bridge_vlan_group *vg, struct sk_buff *skb, |
|
u16 *vid, u8 *state); |
|
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, |
|
bool *changed, struct netlink_ext_ack *extack); |
|
int br_vlan_delete(struct net_bridge *br, u16 vid); |
|
void br_vlan_flush(struct net_bridge *br); |
|
struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); |
|
void br_recalculate_fwd_mask(struct net_bridge *br); |
|
int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, |
|
struct netlink_ext_ack *extack); |
|
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, |
|
struct netlink_ext_ack *extack); |
|
int br_vlan_set_proto(struct net_bridge *br, unsigned long val, |
|
struct netlink_ext_ack *extack); |
|
int br_vlan_set_stats(struct net_bridge *br, unsigned long val); |
|
int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); |
|
int br_vlan_init(struct net_bridge *br); |
|
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, |
|
struct netlink_ext_ack *extack); |
|
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, |
|
struct netlink_ext_ack *extack); |
|
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, |
|
bool *changed, struct netlink_ext_ack *extack); |
|
int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
|
void nbp_vlan_flush(struct net_bridge_port *port); |
|
int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); |
|
int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); |
|
void br_vlan_get_stats(const struct net_bridge_vlan *v, |
|
struct pcpu_sw_netstats *stats); |
|
void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); |
|
int br_vlan_bridge_event(struct net_device *dev, unsigned long event, |
|
void *ptr); |
|
void br_vlan_rtnl_init(void); |
|
void br_vlan_rtnl_uninit(void); |
|
void br_vlan_notify(const struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
u16 vid, u16 vid_range, |
|
int cmd); |
|
bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, |
|
const struct net_bridge_vlan *range_end); |
|
|
|
void br_vlan_fill_forward_path_pvid(struct net_bridge *br, |
|
struct net_device_path_ctx *ctx, |
|
struct net_device_path *path); |
|
int br_vlan_fill_forward_path_mode(struct net_bridge *br, |
|
struct net_bridge_port *dst, |
|
struct net_device_path *path); |
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group( |
|
const struct net_bridge *br) |
|
{ |
|
return rtnl_dereference(br->vlgrp); |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group( |
|
const struct net_bridge_port *p) |
|
{ |
|
return rtnl_dereference(p->vlgrp); |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group_rcu( |
|
const struct net_bridge *br) |
|
{ |
|
return rcu_dereference(br->vlgrp); |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( |
|
const struct net_bridge_port *p) |
|
{ |
|
return rcu_dereference(p->vlgrp); |
|
} |
|
|
|
/* Since bridge now depends on 8021Q module, but the time bridge sees the |
|
* skb, the vlan tag will always be present if the frame was tagged. |
|
*/ |
|
static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) |
|
{ |
|
int err = 0; |
|
|
|
if (skb_vlan_tag_present(skb)) { |
|
*vid = skb_vlan_tag_get_id(skb); |
|
} else { |
|
*vid = 0; |
|
err = -EINVAL; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) |
|
{ |
|
if (!vg) |
|
return 0; |
|
|
|
smp_rmb(); |
|
return vg->pvid; |
|
} |
|
|
|
static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) |
|
{ |
|
return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; |
|
} |
|
#else |
|
static inline bool br_allowed_ingress(const struct net_bridge *br, |
|
struct net_bridge_vlan_group *vg, |
|
struct sk_buff *skb, |
|
u16 *vid, u8 *state) |
|
{ |
|
return true; |
|
} |
|
|
|
static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
|
const struct sk_buff *skb) |
|
{ |
|
return true; |
|
} |
|
|
|
static inline bool br_should_learn(struct net_bridge_port *p, |
|
struct sk_buff *skb, u16 *vid) |
|
{ |
|
return true; |
|
} |
|
|
|
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) |
|
{ |
|
return skb; |
|
} |
|
|
|
static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, |
|
bool *changed, struct netlink_ext_ack *extack) |
|
{ |
|
*changed = false; |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int br_vlan_delete(struct net_bridge *br, u16 vid) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline void br_vlan_flush(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline void br_recalculate_fwd_mask(struct net_bridge *br) |
|
{ |
|
} |
|
|
|
static inline int br_vlan_init(struct net_bridge *br) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, |
|
bool *changed, struct netlink_ext_ack *extack) |
|
{ |
|
*changed = false; |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline void nbp_vlan_flush(struct net_bridge_port *port) |
|
{ |
|
} |
|
|
|
static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, |
|
u16 vid) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline int nbp_vlan_init(struct net_bridge_port *port, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline int br_vlan_filter_toggle(struct net_bridge *br, |
|
unsigned long val, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, |
|
u32 filter_mask) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, |
|
struct net_device_path_ctx *ctx, |
|
struct net_device_path *path) |
|
{ |
|
} |
|
|
|
static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, |
|
struct net_bridge_port *dst, |
|
struct net_device_path *path) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group( |
|
const struct net_bridge *br) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group( |
|
const struct net_bridge_port *p) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group_rcu( |
|
const struct net_bridge *br) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( |
|
const struct net_bridge_port *p) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, |
|
struct pcpu_sw_netstats *stats) |
|
{ |
|
} |
|
|
|
static inline void br_vlan_port_event(struct net_bridge_port *p, |
|
unsigned long event) |
|
{ |
|
} |
|
|
|
static inline int br_vlan_bridge_event(struct net_device *dev, |
|
unsigned long event, void *ptr) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void br_vlan_rtnl_init(void) |
|
{ |
|
} |
|
|
|
static inline void br_vlan_rtnl_uninit(void) |
|
{ |
|
} |
|
|
|
static inline void br_vlan_notify(const struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
u16 vid, u16 vid_range, |
|
int cmd) |
|
{ |
|
} |
|
|
|
static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, |
|
const struct net_bridge_vlan *range_end) |
|
{ |
|
return true; |
|
} |
|
#endif |
|
|
|
/* br_vlan_options.c */ |
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING |
|
bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, |
|
const struct net_bridge_vlan *range_end); |
|
bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); |
|
size_t br_vlan_opts_nl_size(void); |
|
int br_vlan_process_options(const struct net_bridge *br, |
|
const struct net_bridge_port *p, |
|
struct net_bridge_vlan *range_start, |
|
struct net_bridge_vlan *range_end, |
|
struct nlattr **tb, |
|
struct netlink_ext_ack *extack); |
|
|
|
/* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ |
|
static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) |
|
{ |
|
return READ_ONCE(v->state); |
|
} |
|
|
|
static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) |
|
{ |
|
WRITE_ONCE(v->state, state); |
|
} |
|
|
|
static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) |
|
{ |
|
return READ_ONCE(vg->pvid_state); |
|
} |
|
|
|
static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, |
|
u8 state) |
|
{ |
|
WRITE_ONCE(vg->pvid_state, state); |
|
} |
|
|
|
/* learn_allow is true at ingress and false at egress */ |
|
static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) |
|
{ |
|
switch (state) { |
|
case BR_STATE_LEARNING: |
|
return learn_allow; |
|
case BR_STATE_FORWARDING: |
|
return true; |
|
default: |
|
return false; |
|
} |
|
} |
|
#endif |
|
|
|
struct nf_br_ops { |
|
int (*br_dev_xmit_hook)(struct sk_buff *skb); |
|
}; |
|
extern const struct nf_br_ops __rcu *nf_br_ops; |
|
|
|
/* br_netfilter.c */ |
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
|
int br_nf_core_init(void); |
|
void br_nf_core_fini(void); |
|
void br_netfilter_rtable_init(struct net_bridge *); |
|
#else |
|
static inline int br_nf_core_init(void) { return 0; } |
|
static inline void br_nf_core_fini(void) {} |
|
#define br_netfilter_rtable_init(x) |
|
#endif |
|
|
|
/* br_stp.c */ |
|
void br_set_state(struct net_bridge_port *p, unsigned int state); |
|
struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); |
|
void br_init_port(struct net_bridge_port *p); |
|
void br_become_designated_port(struct net_bridge_port *p); |
|
|
|
void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
|
int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
|
int br_set_hello_time(struct net_bridge *br, unsigned long x); |
|
int br_set_max_age(struct net_bridge *br, unsigned long x); |
|
int __set_ageing_time(struct net_device *dev, unsigned long t); |
|
int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); |
|
|
|
|
|
/* br_stp_if.c */ |
|
void br_stp_enable_bridge(struct net_bridge *br); |
|
void br_stp_disable_bridge(struct net_bridge *br); |
|
int br_stp_set_enabled(struct net_bridge *br, unsigned long val, |
|
struct netlink_ext_ack *extack); |
|
void br_stp_enable_port(struct net_bridge_port *p); |
|
void br_stp_disable_port(struct net_bridge_port *p); |
|
bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
|
void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
|
void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); |
|
int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); |
|
int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); |
|
ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
|
|
|
/* br_stp_bpdu.c */ |
|
struct stp_proto; |
|
void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
|
struct net_device *dev); |
|
|
|
/* br_stp_timer.c */ |
|
void br_stp_timer_init(struct net_bridge *br); |
|
void br_stp_port_timer_init(struct net_bridge_port *p); |
|
unsigned long br_timer_value(const struct timer_list *timer); |
|
|
|
/* br.c */ |
|
#if IS_ENABLED(CONFIG_ATM_LANE) |
|
extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
|
#endif |
|
|
|
/* br_mrp.c */ |
|
#if IS_ENABLED(CONFIG_BRIDGE_MRP) |
|
int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, |
|
struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); |
|
bool br_mrp_enabled(struct net_bridge *br); |
|
void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); |
|
int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); |
|
#else |
|
static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, |
|
struct nlattr *attr, int cmd, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline bool br_mrp_enabled(struct net_bridge *br) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline void br_mrp_port_del(struct net_bridge *br, |
|
struct net_bridge_port *p) |
|
{ |
|
} |
|
|
|
static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) |
|
{ |
|
return 0; |
|
} |
|
|
|
#endif |
|
|
|
/* br_cfm.c */ |
|
#if IS_ENABLED(CONFIG_BRIDGE_CFM) |
|
int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, |
|
struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); |
|
bool br_cfm_created(struct net_bridge *br); |
|
void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); |
|
int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); |
|
int br_cfm_status_fill_info(struct sk_buff *skb, |
|
struct net_bridge *br, |
|
bool getlink); |
|
int br_cfm_mep_count(struct net_bridge *br, u32 *count); |
|
int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); |
|
#else |
|
static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, |
|
struct nlattr *attr, int cmd, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline bool br_cfm_created(struct net_bridge *br) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline void br_cfm_port_del(struct net_bridge *br, |
|
struct net_bridge_port *p) |
|
{ |
|
} |
|
|
|
static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int br_cfm_status_fill_info(struct sk_buff *skb, |
|
struct net_bridge *br, |
|
bool getlink) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
#endif |
|
|
|
/* br_netlink.c */ |
|
extern struct rtnl_link_ops br_link_ops; |
|
int br_netlink_init(void); |
|
void br_netlink_fini(void); |
|
void br_ifinfo_notify(int event, const struct net_bridge *br, |
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const struct net_bridge_port *port); |
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void br_info_notify(int event, const struct net_bridge *br, |
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const struct net_bridge_port *port, u32 filter); |
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int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, |
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struct netlink_ext_ack *extack); |
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int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); |
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int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, |
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u32 filter_mask, int nlflags); |
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int br_process_vlan_info(struct net_bridge *br, |
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struct net_bridge_port *p, int cmd, |
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struct bridge_vlan_info *vinfo_curr, |
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struct bridge_vlan_info **vinfo_last, |
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bool *changed, |
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struct netlink_ext_ack *extack); |
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#ifdef CONFIG_SYSFS |
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/* br_sysfs_if.c */ |
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extern const struct sysfs_ops brport_sysfs_ops; |
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int br_sysfs_addif(struct net_bridge_port *p); |
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int br_sysfs_renameif(struct net_bridge_port *p); |
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/* br_sysfs_br.c */ |
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int br_sysfs_addbr(struct net_device *dev); |
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void br_sysfs_delbr(struct net_device *dev); |
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#else |
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static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
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static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } |
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static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } |
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static inline void br_sysfs_delbr(struct net_device *dev) { return; } |
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#endif /* CONFIG_SYSFS */ |
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/* br_switchdev.c */ |
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#ifdef CONFIG_NET_SWITCHDEV |
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int nbp_switchdev_mark_set(struct net_bridge_port *p); |
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void nbp_switchdev_frame_mark(const struct net_bridge_port *p, |
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struct sk_buff *skb); |
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bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, |
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const struct sk_buff *skb); |
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int br_switchdev_set_port_flag(struct net_bridge_port *p, |
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unsigned long flags, |
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unsigned long mask, |
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struct netlink_ext_ack *extack); |
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void br_switchdev_fdb_notify(struct net_bridge *br, |
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const struct net_bridge_fdb_entry *fdb, int type); |
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int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, |
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struct netlink_ext_ack *extack); |
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int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); |
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static inline void br_switchdev_frame_unmark(struct sk_buff *skb) |
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{ |
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skb->offload_fwd_mark = 0; |
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} |
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#else |
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static inline int nbp_switchdev_mark_set(struct net_bridge_port *p) |
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{ |
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return 0; |
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} |
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static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, |
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struct sk_buff *skb) |
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{ |
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} |
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static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, |
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const struct sk_buff *skb) |
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{ |
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return true; |
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} |
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static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, |
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unsigned long flags, |
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unsigned long mask, |
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struct netlink_ext_ack *extack) |
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{ |
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return 0; |
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} |
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static inline int br_switchdev_port_vlan_add(struct net_device *dev, |
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u16 vid, u16 flags, |
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struct netlink_ext_ack *extack) |
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{ |
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return -EOPNOTSUPP; |
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} |
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static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) |
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{ |
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return -EOPNOTSUPP; |
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} |
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static inline void |
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br_switchdev_fdb_notify(struct net_bridge *br, |
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const struct net_bridge_fdb_entry *fdb, int type) |
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{ |
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} |
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static inline void br_switchdev_frame_unmark(struct sk_buff *skb) |
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{ |
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} |
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#endif /* CONFIG_NET_SWITCHDEV */ |
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/* br_arp_nd_proxy.c */ |
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void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); |
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void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, |
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u16 vid, struct net_bridge_port *p); |
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void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, |
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u16 vid, struct net_bridge_port *p, struct nd_msg *msg); |
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struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); |
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#endif
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