![Ivan Vecera](/assets/img/avatar_default.png)
Any bridge options specified during link creation (e.g. ip link add)
are ignored as br_dev_newlink() does not process them.
Use br_changelink() to do it.
Fixes: 1332351617
("bridge: implement rtnl_link_ops->changelink")
Signed-off-by: Ivan Vecera <cera@cera.cz>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1456 lines
41 KiB
C
1456 lines
41 KiB
C
/*
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* Bridge netlink control interface
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*
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* Authors:
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* Stephen Hemminger <shemminger@osdl.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/etherdevice.h>
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#include <net/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <uapi/linux/if_bridge.h>
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#include "br_private.h"
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#include "br_private_stp.h"
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static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
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u32 filter_mask)
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{
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struct net_bridge_vlan *v;
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u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
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u16 flags, pvid;
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int num_vlans = 0;
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if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
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return 0;
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pvid = br_get_pvid(vg);
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/* Count number of vlan infos */
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list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
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flags = 0;
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/* only a context, bridge vlan not activated */
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if (!br_vlan_should_use(v))
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continue;
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if (v->vid == pvid)
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flags |= BRIDGE_VLAN_INFO_PVID;
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if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
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flags |= BRIDGE_VLAN_INFO_UNTAGGED;
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if (vid_range_start == 0) {
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goto initvars;
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} else if ((v->vid - vid_range_end) == 1 &&
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flags == vid_range_flags) {
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vid_range_end = v->vid;
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continue;
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} else {
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if ((vid_range_end - vid_range_start) > 0)
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num_vlans += 2;
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else
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num_vlans += 1;
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}
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initvars:
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vid_range_start = v->vid;
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vid_range_end = v->vid;
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vid_range_flags = flags;
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}
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if (vid_range_start != 0) {
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if ((vid_range_end - vid_range_start) > 0)
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num_vlans += 2;
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else
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num_vlans += 1;
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}
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return num_vlans;
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}
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static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
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u32 filter_mask)
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{
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int num_vlans;
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if (!vg)
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return 0;
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if (filter_mask & RTEXT_FILTER_BRVLAN)
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return vg->num_vlans;
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rcu_read_lock();
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num_vlans = __get_num_vlan_infos(vg, filter_mask);
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rcu_read_unlock();
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return num_vlans;
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}
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static size_t br_get_link_af_size_filtered(const struct net_device *dev,
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u32 filter_mask)
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{
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struct net_bridge_vlan_group *vg = NULL;
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struct net_bridge_port *p;
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struct net_bridge *br;
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int num_vlan_infos;
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rcu_read_lock();
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if (br_port_exists(dev)) {
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p = br_port_get_rcu(dev);
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vg = nbp_vlan_group_rcu(p);
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} else if (dev->priv_flags & IFF_EBRIDGE) {
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br = netdev_priv(dev);
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vg = br_vlan_group_rcu(br);
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}
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num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
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rcu_read_unlock();
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/* Each VLAN is returned in bridge_vlan_info along with flags */
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return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
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}
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static inline size_t br_port_info_size(void)
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{
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return nla_total_size(1) /* IFLA_BRPORT_STATE */
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+ nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
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+ nla_total_size(4) /* IFLA_BRPORT_COST */
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+ nla_total_size(1) /* IFLA_BRPORT_MODE */
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+ nla_total_size(1) /* IFLA_BRPORT_GUARD */
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+ nla_total_size(1) /* IFLA_BRPORT_PROTECT */
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+ nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
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+ nla_total_size(1) /* IFLA_BRPORT_LEARNING */
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+ nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
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+ nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
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+ nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
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+ nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
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+ nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
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+ nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
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+ nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
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+ nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
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+ nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
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+ nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
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+ nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
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+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
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+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
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+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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+ nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
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#endif
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+ 0;
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}
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static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
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{
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return NLMSG_ALIGN(sizeof(struct ifinfomsg))
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+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
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+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
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+ nla_total_size(4) /* IFLA_MASTER */
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+ nla_total_size(4) /* IFLA_MTU */
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+ nla_total_size(4) /* IFLA_LINK */
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+ nla_total_size(1) /* IFLA_OPERSTATE */
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+ nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
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+ nla_total_size(br_get_link_af_size_filtered(dev,
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filter_mask)); /* IFLA_AF_SPEC */
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}
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static int br_port_fill_attrs(struct sk_buff *skb,
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const struct net_bridge_port *p)
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{
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u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
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u64 timerval;
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if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
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nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
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nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
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nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
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nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
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nla_put_u8(skb, IFLA_BRPORT_PROTECT,
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!!(p->flags & BR_ROOT_BLOCK)) ||
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nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
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!!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
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nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
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nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
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!!(p->flags & BR_FLOOD)) ||
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nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
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!!(p->flags & BR_MCAST_FLOOD)) ||
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nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
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nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
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!!(p->flags & BR_PROXYARP_WIFI)) ||
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nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
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&p->designated_root) ||
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nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
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&p->designated_bridge) ||
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nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
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nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
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nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
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nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
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nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
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p->topology_change_ack) ||
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nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending))
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return -EMSGSIZE;
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timerval = br_timer_value(&p->message_age_timer);
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if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
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IFLA_BRPORT_PAD))
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return -EMSGSIZE;
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timerval = br_timer_value(&p->forward_delay_timer);
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if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
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IFLA_BRPORT_PAD))
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return -EMSGSIZE;
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timerval = br_timer_value(&p->hold_timer);
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if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
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IFLA_BRPORT_PAD))
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return -EMSGSIZE;
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
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p->multicast_router))
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return -EMSGSIZE;
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#endif
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return 0;
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}
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static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
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u16 vid_end, u16 flags)
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{
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struct bridge_vlan_info vinfo;
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if ((vid_end - vid_start) > 0) {
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/* add range to skb */
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vinfo.vid = vid_start;
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vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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vinfo.vid = vid_end;
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vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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} else {
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vinfo.vid = vid_start;
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vinfo.flags = flags;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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return -EMSGSIZE;
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}
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static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
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struct net_bridge_vlan_group *vg)
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{
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struct net_bridge_vlan *v;
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u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
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u16 flags, pvid;
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int err = 0;
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/* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
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* and mark vlan info with begin and end flags
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* if vlaninfo represents a range
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*/
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pvid = br_get_pvid(vg);
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list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
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flags = 0;
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if (!br_vlan_should_use(v))
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continue;
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if (v->vid == pvid)
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flags |= BRIDGE_VLAN_INFO_PVID;
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if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
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flags |= BRIDGE_VLAN_INFO_UNTAGGED;
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if (vid_range_start == 0) {
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goto initvars;
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} else if ((v->vid - vid_range_end) == 1 &&
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flags == vid_range_flags) {
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vid_range_end = v->vid;
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continue;
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} else {
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err = br_fill_ifvlaninfo_range(skb, vid_range_start,
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vid_range_end,
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vid_range_flags);
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if (err)
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return err;
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}
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initvars:
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vid_range_start = v->vid;
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vid_range_end = v->vid;
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vid_range_flags = flags;
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}
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if (vid_range_start != 0) {
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/* Call it once more to send any left over vlans */
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err = br_fill_ifvlaninfo_range(skb, vid_range_start,
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vid_range_end,
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vid_range_flags);
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if (err)
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return err;
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}
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return 0;
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}
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static int br_fill_ifvlaninfo(struct sk_buff *skb,
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struct net_bridge_vlan_group *vg)
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{
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struct bridge_vlan_info vinfo;
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struct net_bridge_vlan *v;
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u16 pvid;
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pvid = br_get_pvid(vg);
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list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
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if (!br_vlan_should_use(v))
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continue;
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vinfo.vid = v->vid;
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vinfo.flags = 0;
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if (v->vid == pvid)
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vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
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if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
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vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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return -EMSGSIZE;
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}
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/*
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* Create one netlink message for one interface
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* Contains port and master info as well as carrier and bridge state.
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*/
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static int br_fill_ifinfo(struct sk_buff *skb,
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struct net_bridge_port *port,
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u32 pid, u32 seq, int event, unsigned int flags,
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u32 filter_mask, const struct net_device *dev)
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{
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struct net_bridge *br;
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struct ifinfomsg *hdr;
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struct nlmsghdr *nlh;
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u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
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if (port)
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br = port->br;
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else
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br = netdev_priv(dev);
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br_debug(br, "br_fill_info event %d port %s master %s\n",
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event, dev->name, br->dev->name);
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nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
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if (nlh == NULL)
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return -EMSGSIZE;
|
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|
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hdr = nlmsg_data(nlh);
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hdr->ifi_family = AF_BRIDGE;
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hdr->__ifi_pad = 0;
|
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hdr->ifi_type = dev->type;
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hdr->ifi_index = dev->ifindex;
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hdr->ifi_flags = dev_get_flags(dev);
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hdr->ifi_change = 0;
|
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|
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if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
|
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nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
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nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
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nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
|
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(dev->addr_len &&
|
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nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
|
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(dev->ifindex != dev_get_iflink(dev) &&
|
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nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
|
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goto nla_put_failure;
|
|
|
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if (event == RTM_NEWLINK && port) {
|
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struct nlattr *nest
|
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= nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
|
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|
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if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
|
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goto nla_put_failure;
|
|
nla_nest_end(skb, nest);
|
|
}
|
|
|
|
/* Check if the VID information is requested */
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if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
|
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(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
|
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struct net_bridge_vlan_group *vg;
|
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struct nlattr *af;
|
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int err;
|
|
|
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/* RCU needed because of the VLAN locking rules (rcu || rtnl) */
|
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rcu_read_lock();
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if (port)
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vg = nbp_vlan_group_rcu(port);
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else
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vg = br_vlan_group_rcu(br);
|
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|
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if (!vg || !vg->num_vlans) {
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rcu_read_unlock();
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goto done;
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}
|
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af = nla_nest_start(skb, IFLA_AF_SPEC);
|
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if (!af) {
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rcu_read_unlock();
|
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goto nla_put_failure;
|
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}
|
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if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
|
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err = br_fill_ifvlaninfo_compressed(skb, vg);
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else
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err = br_fill_ifvlaninfo(skb, vg);
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rcu_read_unlock();
|
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if (err)
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goto nla_put_failure;
|
|
nla_nest_end(skb, af);
|
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}
|
|
|
|
done:
|
|
nlmsg_end(skb, nlh);
|
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return 0;
|
|
|
|
nla_put_failure:
|
|
nlmsg_cancel(skb, nlh);
|
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return -EMSGSIZE;
|
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}
|
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|
|
/*
|
|
* Notify listeners of a change in port information
|
|
*/
|
|
void br_ifinfo_notify(int event, struct net_bridge_port *port)
|
|
{
|
|
struct net *net;
|
|
struct sk_buff *skb;
|
|
int err = -ENOBUFS;
|
|
u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
|
|
|
|
if (!port)
|
|
return;
|
|
|
|
net = dev_net(port->dev);
|
|
br_debug(port->br, "port %u(%s) event %d\n",
|
|
(unsigned int)port->port_no, port->dev->name, event);
|
|
|
|
skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
|
|
if (skb == NULL)
|
|
goto errout;
|
|
|
|
err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
|
|
if (err < 0) {
|
|
/* -EMSGSIZE implies BUG in br_nlmsg_size() */
|
|
WARN_ON(err == -EMSGSIZE);
|
|
kfree_skb(skb);
|
|
goto errout;
|
|
}
|
|
rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
|
|
return;
|
|
errout:
|
|
rtnl_set_sk_err(net, RTNLGRP_LINK, err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Dump information about all ports, in response to GETLINK
|
|
*/
|
|
int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
|
|
struct net_device *dev, u32 filter_mask, int nlflags)
|
|
{
|
|
struct net_bridge_port *port = br_port_get_rtnl(dev);
|
|
|
|
if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
|
|
!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
|
|
return 0;
|
|
|
|
return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
|
|
filter_mask, dev);
|
|
}
|
|
|
|
static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
|
|
int cmd, struct bridge_vlan_info *vinfo)
|
|
{
|
|
int err = 0;
|
|
|
|
switch (cmd) {
|
|
case RTM_SETLINK:
|
|
if (p) {
|
|
/* if the MASTER flag is set this will act on the global
|
|
* per-VLAN entry as well
|
|
*/
|
|
err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
|
|
if (err)
|
|
break;
|
|
} else {
|
|
vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
|
|
err = br_vlan_add(br, vinfo->vid, vinfo->flags);
|
|
}
|
|
break;
|
|
|
|
case RTM_DELLINK:
|
|
if (p) {
|
|
nbp_vlan_delete(p, vinfo->vid);
|
|
if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
|
|
br_vlan_delete(p->br, vinfo->vid);
|
|
} else {
|
|
br_vlan_delete(br, vinfo->vid);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int br_afspec(struct net_bridge *br,
|
|
struct net_bridge_port *p,
|
|
struct nlattr *af_spec,
|
|
int cmd)
|
|
{
|
|
struct bridge_vlan_info *vinfo_start = NULL;
|
|
struct bridge_vlan_info *vinfo = NULL;
|
|
struct nlattr *attr;
|
|
int err = 0;
|
|
int rem;
|
|
|
|
nla_for_each_nested(attr, af_spec, rem) {
|
|
if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
|
|
continue;
|
|
if (nla_len(attr) != sizeof(struct bridge_vlan_info))
|
|
return -EINVAL;
|
|
vinfo = nla_data(attr);
|
|
if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
|
|
return -EINVAL;
|
|
if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
|
|
if (vinfo_start)
|
|
return -EINVAL;
|
|
vinfo_start = vinfo;
|
|
/* don't allow range of pvids */
|
|
if (vinfo_start->flags & BRIDGE_VLAN_INFO_PVID)
|
|
return -EINVAL;
|
|
continue;
|
|
}
|
|
|
|
if (vinfo_start) {
|
|
struct bridge_vlan_info tmp_vinfo;
|
|
int v;
|
|
|
|
if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
|
|
return -EINVAL;
|
|
|
|
if (vinfo->vid <= vinfo_start->vid)
|
|
return -EINVAL;
|
|
|
|
memcpy(&tmp_vinfo, vinfo_start,
|
|
sizeof(struct bridge_vlan_info));
|
|
|
|
for (v = vinfo_start->vid; v <= vinfo->vid; v++) {
|
|
tmp_vinfo.vid = v;
|
|
err = br_vlan_info(br, p, cmd, &tmp_vinfo);
|
|
if (err)
|
|
break;
|
|
}
|
|
vinfo_start = NULL;
|
|
} else {
|
|
err = br_vlan_info(br, p, cmd, vinfo);
|
|
}
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
|
|
[IFLA_BRPORT_STATE] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_COST] = { .type = NLA_U32 },
|
|
[IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
|
|
[IFLA_BRPORT_MODE] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
|
|
[IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
|
|
[IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
|
|
};
|
|
|
|
/* Change the state of the port and notify spanning tree */
|
|
static int br_set_port_state(struct net_bridge_port *p, u8 state)
|
|
{
|
|
if (state > BR_STATE_BLOCKING)
|
|
return -EINVAL;
|
|
|
|
/* if kernel STP is running, don't allow changes */
|
|
if (p->br->stp_enabled == BR_KERNEL_STP)
|
|
return -EBUSY;
|
|
|
|
/* if device is not up, change is not allowed
|
|
* if link is not present, only allowable state is disabled
|
|
*/
|
|
if (!netif_running(p->dev) ||
|
|
(!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
|
|
return -ENETDOWN;
|
|
|
|
br_set_state(p, state);
|
|
br_port_state_selection(p->br);
|
|
return 0;
|
|
}
|
|
|
|
/* Set/clear or port flags based on attribute */
|
|
static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
|
|
int attrtype, unsigned long mask)
|
|
{
|
|
if (tb[attrtype]) {
|
|
u8 flag = nla_get_u8(tb[attrtype]);
|
|
if (flag)
|
|
p->flags |= mask;
|
|
else
|
|
p->flags &= ~mask;
|
|
}
|
|
}
|
|
|
|
/* Process bridge protocol info on port */
|
|
static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
|
|
{
|
|
int err;
|
|
unsigned long old_flags = p->flags;
|
|
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
|
|
|
|
if (tb[IFLA_BRPORT_COST]) {
|
|
err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (tb[IFLA_BRPORT_PRIORITY]) {
|
|
err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (tb[IFLA_BRPORT_STATE]) {
|
|
err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (tb[IFLA_BRPORT_FLUSH])
|
|
br_fdb_delete_by_port(p->br, p, 0, 0);
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
|
|
u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
|
|
|
|
err = br_multicast_set_port_router(p, mcast_router);
|
|
if (err)
|
|
return err;
|
|
}
|
|
#endif
|
|
br_port_flags_change(p, old_flags ^ p->flags);
|
|
return 0;
|
|
}
|
|
|
|
/* Change state and parameters on port. */
|
|
int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *protinfo;
|
|
struct nlattr *afspec;
|
|
struct net_bridge_port *p;
|
|
struct nlattr *tb[IFLA_BRPORT_MAX + 1];
|
|
int err = 0;
|
|
|
|
protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
|
|
if (!protinfo && !afspec)
|
|
return 0;
|
|
|
|
p = br_port_get_rtnl(dev);
|
|
/* We want to accept dev as bridge itself if the AF_SPEC
|
|
* is set to see if someone is setting vlan info on the bridge
|
|
*/
|
|
if (!p && !afspec)
|
|
return -EINVAL;
|
|
|
|
if (p && protinfo) {
|
|
if (protinfo->nla_type & NLA_F_NESTED) {
|
|
err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
|
|
protinfo, br_port_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
spin_lock_bh(&p->br->lock);
|
|
err = br_setport(p, tb);
|
|
spin_unlock_bh(&p->br->lock);
|
|
} else {
|
|
/* Binary compatibility with old RSTP */
|
|
if (nla_len(protinfo) < sizeof(u8))
|
|
return -EINVAL;
|
|
|
|
spin_lock_bh(&p->br->lock);
|
|
err = br_set_port_state(p, nla_get_u8(protinfo));
|
|
spin_unlock_bh(&p->br->lock);
|
|
}
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
if (afspec) {
|
|
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
|
|
afspec, RTM_SETLINK);
|
|
}
|
|
|
|
if (err == 0)
|
|
br_ifinfo_notify(RTM_NEWLINK, p);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/* Delete port information */
|
|
int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *afspec;
|
|
struct net_bridge_port *p;
|
|
int err = 0;
|
|
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
|
|
if (!afspec)
|
|
return 0;
|
|
|
|
p = br_port_get_rtnl(dev);
|
|
/* We want to accept dev as bridge itself as well */
|
|
if (!p && !(dev->priv_flags & IFF_EBRIDGE))
|
|
return -EINVAL;
|
|
|
|
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
|
|
afspec, RTM_DELLINK);
|
|
if (err == 0)
|
|
/* Send RTM_NEWLINK because userspace
|
|
* expects RTM_NEWLINK for vlan dels
|
|
*/
|
|
br_ifinfo_notify(RTM_NEWLINK, p);
|
|
|
|
return err;
|
|
}
|
|
static int br_validate(struct nlattr *tb[], struct nlattr *data[])
|
|
{
|
|
if (tb[IFLA_ADDRESS]) {
|
|
if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
|
|
return -EINVAL;
|
|
if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
|
|
return -EADDRNOTAVAIL;
|
|
}
|
|
|
|
if (!data)
|
|
return 0;
|
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
if (data[IFLA_BR_VLAN_PROTOCOL]) {
|
|
switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
|
|
case htons(ETH_P_8021Q):
|
|
case htons(ETH_P_8021AD):
|
|
break;
|
|
default:
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int br_port_slave_changelink(struct net_device *brdev,
|
|
struct net_device *dev,
|
|
struct nlattr *tb[],
|
|
struct nlattr *data[])
|
|
{
|
|
struct net_bridge *br = netdev_priv(brdev);
|
|
int ret;
|
|
|
|
if (!data)
|
|
return 0;
|
|
|
|
spin_lock_bh(&br->lock);
|
|
ret = br_setport(br_port_get_rtnl(dev), data);
|
|
spin_unlock_bh(&br->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int br_port_fill_slave_info(struct sk_buff *skb,
|
|
const struct net_device *brdev,
|
|
const struct net_device *dev)
|
|
{
|
|
return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
|
|
}
|
|
|
|
static size_t br_port_get_slave_size(const struct net_device *brdev,
|
|
const struct net_device *dev)
|
|
{
|
|
return br_port_info_size();
|
|
}
|
|
|
|
static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
|
|
[IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
|
|
[IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
|
|
[IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
|
|
[IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
|
|
[IFLA_BR_STP_STATE] = { .type = NLA_U32 },
|
|
[IFLA_BR_PRIORITY] = { .type = NLA_U16 },
|
|
[IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
|
|
[IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
|
|
[IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
|
|
[IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
|
|
.len = ETH_ALEN },
|
|
[IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
|
|
[IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
|
|
[IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
|
|
[IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
|
|
[IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
|
|
[IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
|
|
[IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
|
|
[IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
|
|
[IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
|
|
[IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
|
|
[IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
|
|
};
|
|
|
|
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
|
|
struct nlattr *data[])
|
|
{
|
|
struct net_bridge *br = netdev_priv(brdev);
|
|
int err;
|
|
|
|
if (!data)
|
|
return 0;
|
|
|
|
if (data[IFLA_BR_FORWARD_DELAY]) {
|
|
err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_HELLO_TIME]) {
|
|
err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MAX_AGE]) {
|
|
err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_AGEING_TIME]) {
|
|
err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_STP_STATE]) {
|
|
u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
|
|
|
|
br_stp_set_enabled(br, stp_enabled);
|
|
}
|
|
|
|
if (data[IFLA_BR_PRIORITY]) {
|
|
u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
|
|
|
|
br_stp_set_bridge_priority(br, priority);
|
|
}
|
|
|
|
if (data[IFLA_BR_VLAN_FILTERING]) {
|
|
u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
|
|
|
|
err = __br_vlan_filter_toggle(br, vlan_filter);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
if (data[IFLA_BR_VLAN_PROTOCOL]) {
|
|
__be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
|
|
|
|
err = __br_vlan_set_proto(br, vlan_proto);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
|
|
__u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
|
|
|
|
err = __br_vlan_set_default_pvid(br, defpvid);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
|
|
__u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
|
|
|
|
err = br_vlan_set_stats(br, vlan_stats);
|
|
if (err)
|
|
return err;
|
|
}
|
|
#endif
|
|
|
|
if (data[IFLA_BR_GROUP_FWD_MASK]) {
|
|
u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
|
|
|
|
if (fwd_mask & BR_GROUPFWD_RESTRICTED)
|
|
return -EINVAL;
|
|
br->group_fwd_mask = fwd_mask;
|
|
}
|
|
|
|
if (data[IFLA_BR_GROUP_ADDR]) {
|
|
u8 new_addr[ETH_ALEN];
|
|
|
|
if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
|
|
return -EINVAL;
|
|
memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
|
|
if (!is_link_local_ether_addr(new_addr))
|
|
return -EINVAL;
|
|
if (new_addr[5] == 1 || /* 802.3x Pause address */
|
|
new_addr[5] == 2 || /* 802.3ad Slow protocols */
|
|
new_addr[5] == 3) /* 802.1X PAE address */
|
|
return -EINVAL;
|
|
spin_lock_bh(&br->lock);
|
|
memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
|
|
spin_unlock_bh(&br->lock);
|
|
br->group_addr_set = true;
|
|
br_recalculate_fwd_mask(br);
|
|
}
|
|
|
|
if (data[IFLA_BR_FDB_FLUSH])
|
|
br_fdb_flush(br);
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
if (data[IFLA_BR_MCAST_ROUTER]) {
|
|
u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
|
|
|
|
err = br_multicast_set_router(br, multicast_router);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_SNOOPING]) {
|
|
u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
|
|
|
|
err = br_multicast_toggle(br, mcast_snooping);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
|
|
u8 val;
|
|
|
|
val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
|
|
br->multicast_query_use_ifaddr = !!val;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_QUERIER]) {
|
|
u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
|
|
|
|
err = br_multicast_set_querier(br, mcast_querier);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
|
|
u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
|
|
|
|
br->hash_elasticity = val;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_HASH_MAX]) {
|
|
u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
|
|
|
|
err = br_multicast_set_hash_max(br, hash_max);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
|
|
u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
|
|
|
|
br->multicast_last_member_count = val;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
|
|
u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
|
|
|
|
br->multicast_startup_query_count = val;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
|
|
|
|
br->multicast_last_member_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
|
|
|
|
br->multicast_membership_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
|
|
|
|
br->multicast_querier_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
|
|
|
|
br->multicast_query_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
|
|
|
|
br->multicast_query_response_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
|
|
u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
|
|
|
|
br->multicast_startup_query_interval = clock_t_to_jiffies(val);
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
|
|
__u8 mcast_stats;
|
|
|
|
mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
|
|
br->multicast_stats_enabled = !!mcast_stats;
|
|
}
|
|
|
|
if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
|
|
__u8 igmp_version;
|
|
|
|
igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
|
|
err = br_multicast_set_igmp_version(br, igmp_version);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
if (data[IFLA_BR_MCAST_MLD_VERSION]) {
|
|
__u8 mld_version;
|
|
|
|
mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
|
|
err = br_multicast_set_mld_version(br, mld_version);
|
|
if (err)
|
|
return err;
|
|
}
|
|
#endif
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
if (data[IFLA_BR_NF_CALL_IPTABLES]) {
|
|
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
|
|
|
|
br->nf_call_iptables = val ? true : false;
|
|
}
|
|
|
|
if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
|
|
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
|
|
|
|
br->nf_call_ip6tables = val ? true : false;
|
|
}
|
|
|
|
if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
|
|
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
|
|
|
|
br->nf_call_arptables = val ? true : false;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int br_dev_newlink(struct net *src_net, struct net_device *dev,
|
|
struct nlattr *tb[], struct nlattr *data[])
|
|
{
|
|
struct net_bridge *br = netdev_priv(dev);
|
|
int err;
|
|
|
|
if (tb[IFLA_ADDRESS]) {
|
|
spin_lock_bh(&br->lock);
|
|
br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
|
|
spin_unlock_bh(&br->lock);
|
|
}
|
|
|
|
err = br_changelink(dev, tb, data);
|
|
if (err)
|
|
return err;
|
|
|
|
return register_netdevice(dev);
|
|
}
|
|
|
|
static size_t br_get_size(const struct net_device *brdev)
|
|
{
|
|
return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
|
|
nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
|
|
nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
|
|
#endif
|
|
nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
|
|
nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
|
|
nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
|
|
nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
|
|
nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
|
|
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
|
|
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
|
|
#endif
|
|
0;
|
|
}
|
|
|
|
static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
|
|
{
|
|
struct net_bridge *br = netdev_priv(brdev);
|
|
u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
|
|
u32 hello_time = jiffies_to_clock_t(br->hello_time);
|
|
u32 age_time = jiffies_to_clock_t(br->max_age);
|
|
u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
|
|
u32 stp_enabled = br->stp_enabled;
|
|
u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
|
|
u8 vlan_enabled = br_vlan_enabled(br);
|
|
u64 clockval;
|
|
|
|
clockval = br_timer_value(&br->hello_timer);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = br_timer_value(&br->tcn_timer);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = br_timer_value(&br->topology_change_timer);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = br_timer_value(&br->gc_timer);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
|
|
nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
|
|
nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
|
|
nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
|
|
nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
|
|
nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
|
|
nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
|
|
nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
|
|
nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
|
|
&br->bridge_id) ||
|
|
nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
|
|
&br->designated_root) ||
|
|
nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
|
|
nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
|
|
nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
|
|
nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
|
|
br->topology_change_detected) ||
|
|
nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
|
|
return -EMSGSIZE;
|
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
|
|
nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
|
|
nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled))
|
|
return -EMSGSIZE;
|
|
#endif
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
|
|
nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
|
|
nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
|
|
br->multicast_query_use_ifaddr) ||
|
|
nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
|
|
nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
|
|
br->multicast_stats_enabled) ||
|
|
nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
|
|
br->hash_elasticity) ||
|
|
nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
|
|
nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
|
|
br->multicast_last_member_count) ||
|
|
nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
|
|
br->multicast_startup_query_count) ||
|
|
nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
|
|
br->multicast_igmp_version))
|
|
return -EMSGSIZE;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
|
|
br->multicast_mld_version))
|
|
return -EMSGSIZE;
|
|
#endif
|
|
clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = jiffies_to_clock_t(br->multicast_membership_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = jiffies_to_clock_t(br->multicast_querier_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = jiffies_to_clock_t(br->multicast_query_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
|
|
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
|
|
IFLA_BR_PAD))
|
|
return -EMSGSIZE;
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
|
|
br->nf_call_iptables ? 1 : 0) ||
|
|
nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
|
|
br->nf_call_ip6tables ? 1 : 0) ||
|
|
nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
|
|
br->nf_call_arptables ? 1 : 0))
|
|
return -EMSGSIZE;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
|
|
{
|
|
struct net_bridge_port *p = NULL;
|
|
struct net_bridge_vlan_group *vg;
|
|
struct net_bridge_vlan *v;
|
|
struct net_bridge *br;
|
|
int numvls = 0;
|
|
|
|
switch (attr) {
|
|
case IFLA_STATS_LINK_XSTATS:
|
|
br = netdev_priv(dev);
|
|
vg = br_vlan_group(br);
|
|
break;
|
|
case IFLA_STATS_LINK_XSTATS_SLAVE:
|
|
p = br_port_get_rtnl(dev);
|
|
if (!p)
|
|
return 0;
|
|
br = p->br;
|
|
vg = nbp_vlan_group(p);
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (vg) {
|
|
/* we need to count all, even placeholder entries */
|
|
list_for_each_entry(v, &vg->vlan_list, vlist)
|
|
numvls++;
|
|
}
|
|
|
|
return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
|
|
nla_total_size(sizeof(struct br_mcast_stats)) +
|
|
nla_total_size(0);
|
|
}
|
|
|
|
static int br_fill_linkxstats(struct sk_buff *skb,
|
|
const struct net_device *dev,
|
|
int *prividx, int attr)
|
|
{
|
|
struct nlattr *nla __maybe_unused;
|
|
struct net_bridge_port *p = NULL;
|
|
struct net_bridge_vlan_group *vg;
|
|
struct net_bridge_vlan *v;
|
|
struct net_bridge *br;
|
|
struct nlattr *nest;
|
|
int vl_idx = 0;
|
|
|
|
switch (attr) {
|
|
case IFLA_STATS_LINK_XSTATS:
|
|
br = netdev_priv(dev);
|
|
vg = br_vlan_group(br);
|
|
break;
|
|
case IFLA_STATS_LINK_XSTATS_SLAVE:
|
|
p = br_port_get_rtnl(dev);
|
|
if (!p)
|
|
return 0;
|
|
br = p->br;
|
|
vg = nbp_vlan_group(p);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE);
|
|
if (!nest)
|
|
return -EMSGSIZE;
|
|
|
|
if (vg) {
|
|
u16 pvid;
|
|
|
|
pvid = br_get_pvid(vg);
|
|
list_for_each_entry(v, &vg->vlan_list, vlist) {
|
|
struct bridge_vlan_xstats vxi;
|
|
struct br_vlan_stats stats;
|
|
|
|
if (++vl_idx < *prividx)
|
|
continue;
|
|
memset(&vxi, 0, sizeof(vxi));
|
|
vxi.vid = v->vid;
|
|
vxi.flags = v->flags;
|
|
if (v->vid == pvid)
|
|
vxi.flags |= BRIDGE_VLAN_INFO_PVID;
|
|
br_vlan_get_stats(v, &stats);
|
|
vxi.rx_bytes = stats.rx_bytes;
|
|
vxi.rx_packets = stats.rx_packets;
|
|
vxi.tx_bytes = stats.tx_bytes;
|
|
vxi.tx_packets = stats.tx_packets;
|
|
|
|
if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
|
|
goto nla_put_failure;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
if (++vl_idx >= *prividx) {
|
|
nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
|
|
sizeof(struct br_mcast_stats),
|
|
BRIDGE_XSTATS_PAD);
|
|
if (!nla)
|
|
goto nla_put_failure;
|
|
br_multicast_get_stats(br, p, nla_data(nla));
|
|
}
|
|
#endif
|
|
nla_nest_end(skb, nest);
|
|
*prividx = 0;
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_end(skb, nest);
|
|
*prividx = vl_idx;
|
|
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static struct rtnl_af_ops br_af_ops __read_mostly = {
|
|
.family = AF_BRIDGE,
|
|
.get_link_af_size = br_get_link_af_size_filtered,
|
|
};
|
|
|
|
struct rtnl_link_ops br_link_ops __read_mostly = {
|
|
.kind = "bridge",
|
|
.priv_size = sizeof(struct net_bridge),
|
|
.setup = br_dev_setup,
|
|
.maxtype = IFLA_BR_MAX,
|
|
.policy = br_policy,
|
|
.validate = br_validate,
|
|
.newlink = br_dev_newlink,
|
|
.changelink = br_changelink,
|
|
.dellink = br_dev_delete,
|
|
.get_size = br_get_size,
|
|
.fill_info = br_fill_info,
|
|
.fill_linkxstats = br_fill_linkxstats,
|
|
.get_linkxstats_size = br_get_linkxstats_size,
|
|
|
|
.slave_maxtype = IFLA_BRPORT_MAX,
|
|
.slave_policy = br_port_policy,
|
|
.slave_changelink = br_port_slave_changelink,
|
|
.get_slave_size = br_port_get_slave_size,
|
|
.fill_slave_info = br_port_fill_slave_info,
|
|
};
|
|
|
|
int __init br_netlink_init(void)
|
|
{
|
|
int err;
|
|
|
|
br_mdb_init();
|
|
rtnl_af_register(&br_af_ops);
|
|
|
|
err = rtnl_link_register(&br_link_ops);
|
|
if (err)
|
|
goto out_af;
|
|
|
|
return 0;
|
|
|
|
out_af:
|
|
rtnl_af_unregister(&br_af_ops);
|
|
br_mdb_uninit();
|
|
return err;
|
|
}
|
|
|
|
void br_netlink_fini(void)
|
|
{
|
|
br_mdb_uninit();
|
|
rtnl_af_unregister(&br_af_ops);
|
|
rtnl_link_unregister(&br_link_ops);
|
|
}
|