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![Ido Schimmel](/assets/img/avatar_default.png)
For EVPN non-DF (Designated Forwarder) filtering we need to be able to prevent decapsulated traffic from being flooded to a multi-homed host. Filtering of multicast and broadcast traffic can be achieved using the following flower filter: # tc filter add dev bond0 egress pref 1 proto all flower indev vxlan0 dst_mac 01:00:00:00:00:00/01:00:00:00:00:00 action drop Unlike broadcast and multicast traffic, it is not currently possible to filter unknown unicast traffic. The classification into unknown unicast is performed by the bridge driver, but is not visible to other layers such as tc. Solve this by adding a new 'l2_miss' bit to the tc skb extension. Clear the bit whenever a packet enters the bridge (received from a bridge port or transmitted via the bridge) and set it if the packet did not match an FDB or MDB entry. If there is no skb extension and the bit needs to be cleared, then do not allocate one as no extension is equivalent to the bit being cleared. The bit is not set for broadcast packets as they never perform a lookup and therefore never incur a miss. A bit that is set for every flooded packet would also work for the current use case, but it does not allow us to differentiate between registered and unregistered multicast traffic, which might be useful in the future. To keep the performance impact to a minimum, the marking of packets is guarded by the 'tc_skb_ext_tc' static key. When 'false', the skb is not touched and an skb extension is not allocated. Instead, only a 5 bytes nop is executed, as demonstrated below for the call site in br_handle_frame(). Before the patch: ``` memset(skb->cb, 0, sizeof(struct br_input_skb_cb)); c37b09: 49 c7 44 24 28 00 00 movq $0x0,0x28(%r12) c37b10: 00 00 p = br_port_get_rcu(skb->dev); c37b12: 49 8b 44 24 10 mov 0x10(%r12),%rax memset(skb->cb, 0, sizeof(struct br_input_skb_cb)); c37b17: 49 c7 44 24 30 00 00 movq $0x0,0x30(%r12) c37b1e: 00 00 c37b20: 49 c7 44 24 38 00 00 movq $0x0,0x38(%r12) c37b27: 00 00 ``` After the patch (when static key is disabled): ``` memset(skb->cb, 0, sizeof(struct br_input_skb_cb)); c37c29: 49 c7 44 24 28 00 00 movq $0x0,0x28(%r12) c37c30: 00 00 c37c32: 49 8d 44 24 28 lea 0x28(%r12),%rax c37c37: 48 c7 40 08 00 00 00 movq $0x0,0x8(%rax) c37c3e: 00 c37c3f: 48 c7 40 10 00 00 00 movq $0x0,0x10(%rax) c37c46: 00 #ifdef CONFIG_HAVE_JUMP_LABEL_HACK static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { asm_volatile_goto("1:" c37c47: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) br_tc_skb_miss_set(skb, false); p = br_port_get_rcu(skb->dev); c37c4c: 49 8b 44 24 10 mov 0x10(%r12),%rax ``` Subsequent patches will extend the flower classifier to be able to match on the new 'l2_miss' bit and enable / disable the static key when filters that match on it are added / deleted. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2251 lines
64 KiB
C
2251 lines
64 KiB
C
/* 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 <buytenh@gnu.org>
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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 <net/pkt_cls.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_MULTICAST_QUERY_INTVL_MIN msecs_to_jiffies(1000)
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#define BR_MULTICAST_STARTUP_QUERY_INTVL_MIN BR_MULTICAST_QUERY_INTVL_MIN
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#define BR_HWDOM_MAX BITS_PER_LONG
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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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int port_ifidx;
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seqcount_spinlock_t seq;
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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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struct br_mdb_src_entry {
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struct br_ip addr;
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};
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struct br_mdb_config {
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struct net_bridge *br;
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struct net_bridge_port *p;
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struct br_mdb_entry *entry;
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struct br_ip group;
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bool src_entry;
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u8 filter_mode;
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u16 nlflags;
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struct br_mdb_src_entry *src_entries;
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int num_src_entries;
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u8 rt_protocol;
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};
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#endif
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/* net_bridge_mcast_port must be always defined due to forwarding stubs */
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struct net_bridge_mcast_port {
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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struct net_bridge_port *port;
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struct net_bridge_vlan *vlan;
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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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unsigned char multicast_router;
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u32 mdb_n_entries;
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u32 mdb_max_entries;
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#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
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};
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/* net_bridge_mcast must be always defined due to forwarding stubs */
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struct net_bridge_mcast {
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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struct net_bridge *br;
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struct net_bridge_vlan *vlan;
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u32 multicast_last_member_count;
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u32 multicast_startup_query_count;
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u8 multicast_querier;
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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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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 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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#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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#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
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};
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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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BR_VLFLAG_MCAST_ENABLED = BIT(2),
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BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3),
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BR_VLFLAG_NEIGH_SUPPRESS_ENABLED = BIT(4),
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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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* @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context
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* @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast
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* context
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* @msti: if MASTER flag set, this holds the VLANs MST instance
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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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union {
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struct net_bridge_mcast br_mcast_ctx;
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struct net_bridge_mcast_port port_mcast_ctx;
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};
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u16 msti;
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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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BR_FDB_LOCKED,
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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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struct net_bridge_fdb_flush_desc {
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unsigned long flags;
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unsigned long flags_mask;
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int port_ifindex;
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u16 vlan_id;
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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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#define BR_SGRP_F_USER_ADDED BIT(3)
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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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netdevice_tracker dev_tracker;
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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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struct net_bridge_mcast_port multicast_ctx;
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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struct bridge_mcast_stats __percpu *mcast_stats;
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u32 multicast_eht_hosts_limit;
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u32 multicast_eht_hosts_cnt;
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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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/* Identifier used to group ports that share the same switchdev
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* hardware domain.
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*/
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int hwdom;
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int offload_count;
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struct netdev_phys_item_id ppid;
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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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|
}
|
|
|
|
static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
|
|
{
|
|
return netif_is_bridge_port(dev) ?
|
|
rtnl_dereference(dev->rx_handler_data) : NULL;
|
|
}
|
|
|
|
static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
|
|
{
|
|
return netif_is_bridge_port(dev) ?
|
|
rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
|
|
}
|
|
|
|
enum net_bridge_opts {
|
|
BROPT_VLAN_ENABLED,
|
|
BROPT_VLAN_STATS_ENABLED,
|
|
BROPT_NF_CALL_IPTABLES,
|
|
BROPT_NF_CALL_IP6TABLES,
|
|
BROPT_NF_CALL_ARPTABLES,
|
|
BROPT_GROUP_ADDR_SET,
|
|
BROPT_MULTICAST_ENABLED,
|
|
BROPT_MULTICAST_QUERY_USE_IFADDR,
|
|
BROPT_MULTICAST_STATS_ENABLED,
|
|
BROPT_HAS_IPV6_ADDR,
|
|
BROPT_NEIGH_SUPPRESS_ENABLED,
|
|
BROPT_MTU_SET_BY_USER,
|
|
BROPT_VLAN_STATS_PER_PORT,
|
|
BROPT_NO_LL_LEARN,
|
|
BROPT_VLAN_BRIDGE_BINDING,
|
|
BROPT_MCAST_VLAN_SNOOPING_ENABLED,
|
|
BROPT_MST_ENABLED,
|
|
};
|
|
|
|
struct net_bridge {
|
|
spinlock_t lock;
|
|
spinlock_t hash_lock;
|
|
struct hlist_head frame_type_list;
|
|
struct net_device *dev;
|
|
unsigned long options;
|
|
/* These fields are accessed on each packet */
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
__be16 vlan_proto;
|
|
u16 default_pvid;
|
|
struct net_bridge_vlan_group __rcu *vlgrp;
|
|
#endif
|
|
|
|
struct rhashtable fdb_hash_tbl;
|
|
struct list_head port_list;
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
union {
|
|
struct rtable fake_rtable;
|
|
struct rt6_info fake_rt6_info;
|
|
};
|
|
#endif
|
|
u16 group_fwd_mask;
|
|
u16 group_fwd_mask_required;
|
|
|
|
/* STP */
|
|
bridge_id designated_root;
|
|
bridge_id bridge_id;
|
|
unsigned char topology_change;
|
|
unsigned char topology_change_detected;
|
|
u16 root_port;
|
|
unsigned long max_age;
|
|
unsigned long hello_time;
|
|
unsigned long forward_delay;
|
|
unsigned long ageing_time;
|
|
unsigned long bridge_max_age;
|
|
unsigned long bridge_hello_time;
|
|
unsigned long bridge_forward_delay;
|
|
unsigned long bridge_ageing_time;
|
|
u32 root_path_cost;
|
|
|
|
u8 group_addr[ETH_ALEN];
|
|
|
|
enum {
|
|
BR_NO_STP, /* no spanning tree */
|
|
BR_KERNEL_STP, /* old STP in kernel */
|
|
BR_USER_STP, /* new RSTP in userspace */
|
|
} stp_enabled;
|
|
|
|
struct net_bridge_mcast multicast_ctx;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
struct bridge_mcast_stats __percpu *mcast_stats;
|
|
|
|
u32 hash_max;
|
|
|
|
spinlock_t multicast_lock;
|
|
|
|
struct rhashtable mdb_hash_tbl;
|
|
struct rhashtable sg_port_tbl;
|
|
|
|
struct hlist_head mcast_gc_list;
|
|
struct hlist_head mdb_list;
|
|
|
|
struct work_struct mcast_gc_work;
|
|
#endif
|
|
|
|
struct timer_list hello_timer;
|
|
struct timer_list tcn_timer;
|
|
struct timer_list topology_change_timer;
|
|
struct delayed_work gc_work;
|
|
struct kobject *ifobj;
|
|
u32 auto_cnt;
|
|
|
|
#ifdef CONFIG_NET_SWITCHDEV
|
|
/* Counter used to make sure that hardware domains get unique
|
|
* identifiers in case a bridge spans multiple switchdev instances.
|
|
*/
|
|
int last_hwdom;
|
|
/* Bit mask of hardware domain numbers in use */
|
|
unsigned long busy_hwdoms;
|
|
#endif
|
|
struct hlist_head fdb_list;
|
|
|
|
#if IS_ENABLED(CONFIG_BRIDGE_MRP)
|
|
struct hlist_head mrp_list;
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_BRIDGE_CFM)
|
|
struct hlist_head mep_list;
|
|
#endif
|
|
};
|
|
|
|
struct br_input_skb_cb {
|
|
struct net_device *brdev;
|
|
|
|
u16 frag_max_size;
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
u8 igmp;
|
|
u8 mrouters_only:1;
|
|
#endif
|
|
u8 proxyarp_replied:1;
|
|
u8 src_port_isolated:1;
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
u8 vlan_filtered:1;
|
|
#endif
|
|
#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
|
|
u8 br_netfilter_broute:1;
|
|
#endif
|
|
|
|
#ifdef CONFIG_NET_SWITCHDEV
|
|
/* Set if TX data plane offloading is used towards at least one
|
|
* hardware domain.
|
|
*/
|
|
u8 tx_fwd_offload:1;
|
|
/* The switchdev hardware domain from which this packet was received.
|
|
* If skb->offload_fwd_mark was set, then this packet was already
|
|
* forwarded by hardware to the other ports in the source hardware
|
|
* domain, otherwise it wasn't.
|
|
*/
|
|
int src_hwdom;
|
|
/* Bit mask of hardware domains towards this packet has already been
|
|
* transmitted using the TX data plane offload.
|
|
*/
|
|
unsigned long fwd_hwdoms;
|
|
#endif
|
|
};
|
|
|
|
#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
|
|
#else
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
|
|
#endif
|
|
|
|
#define br_printk(level, br, format, args...) \
|
|
printk(level "%s: " format, (br)->dev->name, ##args)
|
|
|
|
#define br_err(__br, format, args...) \
|
|
br_printk(KERN_ERR, __br, format, ##args)
|
|
#define br_warn(__br, format, args...) \
|
|
br_printk(KERN_WARNING, __br, format, ##args)
|
|
#define br_notice(__br, format, args...) \
|
|
br_printk(KERN_NOTICE, __br, format, ##args)
|
|
#define br_info(__br, format, args...) \
|
|
br_printk(KERN_INFO, __br, format, ##args)
|
|
|
|
#define br_debug(br, format, args...) \
|
|
pr_debug("%s: " format, (br)->dev->name, ##args)
|
|
|
|
/* called under bridge lock */
|
|
static inline int br_is_root_bridge(const struct net_bridge *br)
|
|
{
|
|
return !memcmp(&br->bridge_id, &br->designated_root, 8);
|
|
}
|
|
|
|
/* check if a VLAN entry is global */
|
|
static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
|
|
{
|
|
return v->flags & BRIDGE_VLAN_INFO_MASTER;
|
|
}
|
|
|
|
/* check if a VLAN entry is used by the bridge */
|
|
static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
|
|
{
|
|
return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
|
|
}
|
|
|
|
/* check if we should use the vlan entry, returns false if it's only context */
|
|
static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
|
|
{
|
|
if (br_vlan_is_master(v)) {
|
|
if (br_vlan_is_brentry(v))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
|
|
{
|
|
return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
|
|
}
|
|
|
|
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 u8 br_vlan_multicast_router(const struct net_bridge_vlan *v)
|
|
{
|
|
u8 mcast_router = MDB_RTR_TYPE_DISABLED;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
if (!br_vlan_is_master(v))
|
|
mcast_router = v->port_mcast_ctx.multicast_router;
|
|
else
|
|
mcast_router = v->br_mcast_ctx.multicast_router;
|
|
#endif
|
|
|
|
return mcast_router;
|
|
}
|
|
|
|
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);
|
|
|
|
#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
|
|
static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
|
|
{
|
|
struct tc_skb_ext *ext;
|
|
|
|
if (!tc_skb_ext_tc_enabled())
|
|
return;
|
|
|
|
ext = skb_ext_find(skb, TC_SKB_EXT);
|
|
if (ext) {
|
|
ext->l2_miss = miss;
|
|
return;
|
|
}
|
|
if (!miss)
|
|
return;
|
|
ext = tc_skb_ext_alloc(skb);
|
|
if (!ext)
|
|
return;
|
|
ext->l2_miss = true;
|
|
}
|
|
#else
|
|
static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* 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 */
|
|
#define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF)
|
|
#define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP)
|
|
#define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \
|
|
NTF_STICKY | NTF_OFFLOADED)
|
|
|
|
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,
|
|
const struct net_bridge_fdb_flush_desc *desc);
|
|
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_add_local(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,
|
|
struct netlink_ext_ack *extack);
|
|
int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev, u16 vid,
|
|
struct netlink_ext_ack *extack);
|
|
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 locked, 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,
|
|
u16 vid);
|
|
|
|
/* 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_siocdevprivate(struct net_device *dev, struct ifreq *rq,
|
|
void __user *data, int cmd);
|
|
int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd,
|
|
struct ifreq *ifr, void __user *uarg);
|
|
|
|
/* br_multicast.c */
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
int br_multicast_rcv(struct net_bridge_mcast **brmctx,
|
|
struct net_bridge_mcast_port **pmctx,
|
|
struct net_bridge_vlan *vlan,
|
|
struct sk_buff *skb, u16 vid);
|
|
struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
|
|
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,
|
|
struct net_bridge_mcast *brmctx,
|
|
bool local_rcv, bool local_orig);
|
|
int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
|
|
int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
|
|
unsigned long val);
|
|
int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router);
|
|
int br_multicast_toggle(struct net_bridge *br, unsigned long val,
|
|
struct netlink_ext_ack *extack);
|
|
int br_multicast_set_querier(struct net_bridge_mcast *brmctx, 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_mcast *brmctx,
|
|
unsigned long val);
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx,
|
|
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,
|
|
const struct br_ip *group,
|
|
struct net_bridge_port_group __rcu *next,
|
|
unsigned char flags, const unsigned char *src,
|
|
u8 filter_mode, u8 rt_protocol,
|
|
struct netlink_ext_ack *extack);
|
|
void br_multicast_del_port_group(struct net_bridge_port_group *p);
|
|
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_mcast_port *pmctx,
|
|
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);
|
|
u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
|
|
void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
|
|
u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
|
|
int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
|
|
struct netlink_ext_ack *extack);
|
|
int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
|
|
struct netlink_ext_ack *extack);
|
|
int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
|
|
struct netlink_callback *cb);
|
|
void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
|
|
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);
|
|
struct net_bridge_group_src *
|
|
br_multicast_new_group_src(struct net_bridge_port_group *pg,
|
|
struct br_ip *src_ip);
|
|
void __br_multicast_del_group_src(struct net_bridge_group_src *src);
|
|
void br_multicast_del_group_src(struct net_bridge_group_src *src,
|
|
bool fastleave);
|
|
void br_multicast_ctx_init(struct net_bridge *br,
|
|
struct net_bridge_vlan *vlan,
|
|
struct net_bridge_mcast *brmctx);
|
|
void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx);
|
|
void br_multicast_port_ctx_init(struct net_bridge_port *port,
|
|
struct net_bridge_vlan *vlan,
|
|
struct net_bridge_mcast_port *pmctx);
|
|
void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx);
|
|
void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on);
|
|
int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on,
|
|
struct netlink_ext_ack *extack);
|
|
bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
|
|
|
|
int br_rports_fill_info(struct sk_buff *skb,
|
|
const struct net_bridge_mcast *brmctx);
|
|
int br_multicast_dump_querier_state(struct sk_buff *skb,
|
|
const struct net_bridge_mcast *brmctx,
|
|
int nest_attr);
|
|
size_t br_multicast_querier_state_size(void);
|
|
size_t br_rports_size(const struct net_bridge_mcast *brmctx);
|
|
void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx,
|
|
unsigned long val);
|
|
void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx,
|
|
unsigned long val);
|
|
|
|
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_mcast *brmctx,
|
|
struct sk_buff *skb)
|
|
{
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
if (skb->protocol == htons(ETH_P_IPV6))
|
|
return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list));
|
|
#endif
|
|
return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list));
|
|
}
|
|
|
|
static inline struct net_bridge_port *
|
|
br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb)
|
|
{
|
|
struct net_bridge_mcast_port *mctx;
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
if (skb->protocol == htons(ETH_P_IPV6))
|
|
mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
|
|
ip6_rlist);
|
|
else
|
|
#endif
|
|
mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
|
|
ip4_rlist);
|
|
|
|
if (mctx)
|
|
return mctx->port;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx)
|
|
{
|
|
return timer_pending(&brmctx->ip4_mc_router_timer);
|
|
}
|
|
|
|
static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx)
|
|
{
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
return timer_pending(&brmctx->ip6_mc_router_timer);
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb)
|
|
{
|
|
switch (brmctx->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(brmctx);
|
|
else if (skb->protocol == htons(ETH_P_IPV6))
|
|
return br_ip6_multicast_is_router(brmctx);
|
|
} else {
|
|
return br_ip4_multicast_is_router(brmctx) ||
|
|
br_ip6_multicast_is_router(brmctx);
|
|
}
|
|
fallthrough;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static inline bool
|
|
__br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
|
|
struct bridge_mcast_other_query *querier,
|
|
const bool is_ipv6)
|
|
{
|
|
bool own_querier_enabled;
|
|
|
|
if (brmctx->multicast_querier) {
|
|
if (is_ipv6 && !br_opt_get(brmctx->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_mcast *brmctx,
|
|
struct ethhdr *eth,
|
|
const struct net_bridge_mdb_entry *mdb)
|
|
{
|
|
switch (eth->h_proto) {
|
|
case (htons(ETH_P_IP)):
|
|
return __br_multicast_querier_exists(brmctx,
|
|
&brmctx->ip4_other_query, false);
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
case (htons(ETH_P_IPV6)):
|
|
return __br_multicast_querier_exists(brmctx,
|
|
&brmctx->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_mcast *brmctx,
|
|
__be16 proto)
|
|
{
|
|
switch (proto) {
|
|
case htons(ETH_P_IP):
|
|
return !!(brmctx->multicast_igmp_version == 3);
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
case htons(ETH_P_IPV6):
|
|
return !!(brmctx->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_mcast *brmctx)
|
|
{
|
|
return brmctx->multicast_last_member_interval *
|
|
brmctx->multicast_last_member_count;
|
|
}
|
|
|
|
static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
return brmctx->multicast_membership_interval;
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
return !!brmctx->vlan;
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
return !!pmctx->vlan;
|
|
}
|
|
|
|
static inline struct net_bridge_mcast *
|
|
br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
if (!br_multicast_port_ctx_is_vlan(pmctx))
|
|
return &pmctx->port->br->multicast_ctx;
|
|
else
|
|
return &pmctx->vlan->brvlan->br_mcast_ctx;
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
return br_multicast_ctx_is_vlan(brmctx) &&
|
|
(!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) ||
|
|
!(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED));
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
return br_multicast_ctx_is_vlan(brmctx) &&
|
|
!(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
return br_multicast_port_ctx_is_vlan(pmctx) &&
|
|
!(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
return pmctx->port->state == BR_STATE_DISABLED ||
|
|
(br_multicast_port_ctx_is_vlan(pmctx) &&
|
|
(br_multicast_port_ctx_vlan_disabled(pmctx) ||
|
|
pmctx->vlan->state == BR_STATE_DISABLED));
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
return br_multicast_port_ctx_state_disabled(pmctx) ||
|
|
pmctx->port->state == BR_STATE_BLOCKING ||
|
|
(br_multicast_port_ctx_is_vlan(pmctx) &&
|
|
pmctx->vlan->state == BR_STATE_BLOCKING);
|
|
}
|
|
|
|
static inline bool
|
|
br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
return !hlist_empty(&brmctx->ip4_mc_router_list) ||
|
|
!hlist_empty(&brmctx->ip6_mc_router_list);
|
|
#else
|
|
return !hlist_empty(&brmctx->ip4_mc_router_list);
|
|
#endif
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
|
|
const struct net_bridge_mcast *brmctx2)
|
|
{
|
|
return brmctx1->multicast_igmp_version ==
|
|
brmctx2->multicast_igmp_version &&
|
|
brmctx1->multicast_last_member_count ==
|
|
brmctx2->multicast_last_member_count &&
|
|
brmctx1->multicast_startup_query_count ==
|
|
brmctx2->multicast_startup_query_count &&
|
|
brmctx1->multicast_last_member_interval ==
|
|
brmctx2->multicast_last_member_interval &&
|
|
brmctx1->multicast_membership_interval ==
|
|
brmctx2->multicast_membership_interval &&
|
|
brmctx1->multicast_querier_interval ==
|
|
brmctx2->multicast_querier_interval &&
|
|
brmctx1->multicast_query_interval ==
|
|
brmctx2->multicast_query_interval &&
|
|
brmctx1->multicast_query_response_interval ==
|
|
brmctx2->multicast_query_response_interval &&
|
|
brmctx1->multicast_startup_query_interval ==
|
|
brmctx2->multicast_startup_query_interval &&
|
|
brmctx1->multicast_querier == brmctx2->multicast_querier &&
|
|
brmctx1->multicast_router == brmctx2->multicast_router &&
|
|
!br_rports_have_mc_router(brmctx1) &&
|
|
!br_rports_have_mc_router(brmctx2) &&
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
brmctx1->multicast_mld_version ==
|
|
brmctx2->multicast_mld_version &&
|
|
#endif
|
|
true;
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx)
|
|
{
|
|
bool vlan_snooping_enabled;
|
|
|
|
vlan_snooping_enabled = !!br_opt_get(brmctx->br,
|
|
BROPT_MCAST_VLAN_SNOOPING_ENABLED);
|
|
|
|
return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx));
|
|
}
|
|
#else
|
|
static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx,
|
|
struct net_bridge_mcast_port **pmctx,
|
|
struct net_bridge_vlan *vlan,
|
|
struct sk_buff *skb,
|
|
u16 vid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
|
|
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,
|
|
struct net_bridge_mcast *brmctx,
|
|
bool local_rcv, bool local_orig)
|
|
{
|
|
}
|
|
|
|
static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx,
|
|
struct sk_buff *skb)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
|
|
struct ethhdr *eth,
|
|
const struct net_bridge_mdb_entry *mdb)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
|
|
u16 nlmsg_flags, struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static inline void br_multicast_ctx_init(struct net_bridge *br,
|
|
struct net_bridge_vlan *vlan,
|
|
struct net_bridge_mcast *brmctx)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_port_ctx_init(struct net_bridge_port *port,
|
|
struct net_bridge_vlan *vlan,
|
|
struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan,
|
|
bool on)
|
|
{
|
|
}
|
|
|
|
static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br,
|
|
bool on,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan,
|
|
bool on)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool
|
|
br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
|
|
const struct net_bridge_mcast *brmctx2)
|
|
{
|
|
return true;
|
|
}
|
|
#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,
|
|
struct net_bridge_vlan **vlan);
|
|
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,
|
|
struct net_bridge_vlan **vlan)
|
|
|
|
{
|
|
*vlan = NULL;
|
|
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;
|
|
}
|
|
|
|
static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#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,
|
|
const struct net_bridge_port *p);
|
|
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);
|
|
int br_vlan_rtm_process_global_options(struct net_device *dev,
|
|
const struct nlattr *attr,
|
|
int cmd,
|
|
struct netlink_ext_ack *extack);
|
|
bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
|
|
const struct net_bridge_vlan *r_end);
|
|
bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
|
|
const struct net_bridge_vlan *v_opts);
|
|
|
|
/* 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
|
|
|
|
/* br_mst.c */
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
DECLARE_STATIC_KEY_FALSE(br_mst_used);
|
|
static inline bool br_mst_is_enabled(struct net_bridge *br)
|
|
{
|
|
return static_branch_unlikely(&br_mst_used) &&
|
|
br_opt_get(br, BROPT_MST_ENABLED);
|
|
}
|
|
|
|
int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state,
|
|
struct netlink_ext_ack *extack);
|
|
int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti);
|
|
void br_mst_vlan_init_state(struct net_bridge_vlan *v);
|
|
int br_mst_set_enabled(struct net_bridge *br, bool on,
|
|
struct netlink_ext_ack *extack);
|
|
size_t br_mst_info_size(const struct net_bridge_vlan_group *vg);
|
|
int br_mst_fill_info(struct sk_buff *skb,
|
|
const struct net_bridge_vlan_group *vg);
|
|
int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr,
|
|
struct netlink_ext_ack *extack);
|
|
#else
|
|
static inline bool br_mst_is_enabled(struct net_bridge *br)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti,
|
|
u8 state, struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_mst_set_enabled(struct net_bridge *br, bool on,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int br_mst_fill_info(struct sk_buff *skb,
|
|
const struct net_bridge_vlan_group *vg)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_mst_process(struct net_bridge_port *p,
|
|
const struct nlattr *mst_attr,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
#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)
|
|
{
|
|
*count = 0;
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
|
|
{
|
|
*count = 0;
|
|
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,
|
|
const struct net_bridge_port *port);
|
|
void br_info_notify(int event, const struct net_bridge *br,
|
|
const struct net_bridge_port *port, u32 filter);
|
|
int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
|
|
struct netlink_ext_ack *extack);
|
|
int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
|
|
int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
|
|
u32 filter_mask, int nlflags);
|
|
int br_process_vlan_info(struct net_bridge *br,
|
|
struct net_bridge_port *p, int cmd,
|
|
struct bridge_vlan_info *vinfo_curr,
|
|
struct bridge_vlan_info **vinfo_last,
|
|
bool *changed,
|
|
struct netlink_ext_ack *extack);
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
/* br_sysfs_if.c */
|
|
extern const struct sysfs_ops brport_sysfs_ops;
|
|
int br_sysfs_addif(struct net_bridge_port *p);
|
|
int br_sysfs_renameif(struct net_bridge_port *p);
|
|
|
|
/* br_sysfs_br.c */
|
|
int br_sysfs_addbr(struct net_device *dev);
|
|
void br_sysfs_delbr(struct net_device *dev);
|
|
|
|
#else
|
|
|
|
static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
|
|
static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
|
|
static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
|
|
static inline void br_sysfs_delbr(struct net_device *dev) { return; }
|
|
#endif /* CONFIG_SYSFS */
|
|
|
|
/* br_switchdev.c */
|
|
#ifdef CONFIG_NET_SWITCHDEV
|
|
int br_switchdev_port_offload(struct net_bridge_port *p,
|
|
struct net_device *dev, const void *ctx,
|
|
struct notifier_block *atomic_nb,
|
|
struct notifier_block *blocking_nb,
|
|
bool tx_fwd_offload,
|
|
struct netlink_ext_ack *extack);
|
|
|
|
void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
|
|
struct notifier_block *atomic_nb,
|
|
struct notifier_block *blocking_nb);
|
|
|
|
bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb);
|
|
|
|
void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb);
|
|
|
|
void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
|
|
struct sk_buff *skb);
|
|
void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
|
|
struct sk_buff *skb);
|
|
void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
|
|
struct sk_buff *skb);
|
|
bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
|
|
const struct sk_buff *skb);
|
|
int br_switchdev_set_port_flag(struct net_bridge_port *p,
|
|
unsigned long flags,
|
|
unsigned long mask,
|
|
struct netlink_ext_ack *extack);
|
|
void br_switchdev_fdb_notify(struct net_bridge *br,
|
|
const struct net_bridge_fdb_entry *fdb, int type);
|
|
void br_switchdev_mdb_notify(struct net_device *dev,
|
|
struct net_bridge_mdb_entry *mp,
|
|
struct net_bridge_port_group *pg,
|
|
int type);
|
|
int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
|
|
bool changed, struct netlink_ext_ack *extack);
|
|
int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
|
|
void br_switchdev_init(struct net_bridge *br);
|
|
|
|
static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
|
|
{
|
|
skb->offload_fwd_mark = 0;
|
|
}
|
|
#else
|
|
static inline int
|
|
br_switchdev_port_offload(struct net_bridge_port *p,
|
|
struct net_device *dev, const void *ctx,
|
|
struct notifier_block *atomic_nb,
|
|
struct notifier_block *blocking_nb,
|
|
bool tx_fwd_offload,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void
|
|
br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
|
|
struct notifier_block *atomic_nb,
|
|
struct notifier_block *blocking_nb)
|
|
{
|
|
}
|
|
|
|
static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void
|
|
nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void
|
|
nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
|
|
const struct sk_buff *skb)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
|
|
unsigned long flags,
|
|
unsigned long mask,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid,
|
|
u16 flags, bool changed,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void
|
|
br_switchdev_fdb_notify(struct net_bridge *br,
|
|
const struct net_bridge_fdb_entry *fdb, int type)
|
|
{
|
|
}
|
|
|
|
static inline void br_switchdev_mdb_notify(struct net_device *dev,
|
|
struct net_bridge_mdb_entry *mp,
|
|
struct net_bridge_port_group *pg,
|
|
int type)
|
|
{
|
|
}
|
|
|
|
static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void br_switchdev_init(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_NET_SWITCHDEV */
|
|
|
|
/* br_arp_nd_proxy.c */
|
|
void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
|
|
void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
|
|
u16 vid, struct net_bridge_port *p);
|
|
void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
|
|
u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
|
|
struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
|
|
bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
|
|
#endif
|