| /* |
| * Bridge netlink control interface |
| * |
| * Authors: |
| * Stephen Hemminger <shemminger@osdl.org> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/etherdevice.h> |
| #include <net/rtnetlink.h> |
| #include <net/net_namespace.h> |
| #include <net/sock.h> |
| #include <uapi/linux/if_bridge.h> |
| |
| #include "br_private.h" |
| #include "br_private_stp.h" |
| #include "br_private_tunnel.h" |
| |
| static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| u32 filter_mask) |
| { |
| struct net_bridge_vlan *v; |
| u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| u16 flags, pvid; |
| int num_vlans = 0; |
| |
| if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) |
| return 0; |
| |
| pvid = br_get_pvid(vg); |
| /* Count number of vlan infos */ |
| list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| flags = 0; |
| /* only a context, bridge vlan not activated */ |
| if (!br_vlan_should_use(v)) |
| continue; |
| if (v->vid == pvid) |
| flags |= BRIDGE_VLAN_INFO_PVID; |
| |
| if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| |
| if (vid_range_start == 0) { |
| goto initvars; |
| } else if ((v->vid - vid_range_end) == 1 && |
| flags == vid_range_flags) { |
| vid_range_end = v->vid; |
| continue; |
| } else { |
| if ((vid_range_end - vid_range_start) > 0) |
| num_vlans += 2; |
| else |
| num_vlans += 1; |
| } |
| initvars: |
| vid_range_start = v->vid; |
| vid_range_end = v->vid; |
| vid_range_flags = flags; |
| } |
| |
| if (vid_range_start != 0) { |
| if ((vid_range_end - vid_range_start) > 0) |
| num_vlans += 2; |
| else |
| num_vlans += 1; |
| } |
| |
| return num_vlans; |
| } |
| |
| static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg, |
| u32 filter_mask) |
| { |
| int num_vlans; |
| |
| if (!vg) |
| return 0; |
| |
| if (filter_mask & RTEXT_FILTER_BRVLAN) |
| return vg->num_vlans; |
| |
| rcu_read_lock(); |
| num_vlans = __get_num_vlan_infos(vg, filter_mask); |
| rcu_read_unlock(); |
| |
| return num_vlans; |
| } |
| |
| static size_t br_get_link_af_size_filtered(const struct net_device *dev, |
| u32 filter_mask) |
| { |
| struct net_bridge_vlan_group *vg = NULL; |
| struct net_bridge_port *p = NULL; |
| struct net_bridge *br; |
| int num_vlan_infos; |
| size_t vinfo_sz = 0; |
| |
| rcu_read_lock(); |
| if (br_port_exists(dev)) { |
| p = br_port_get_rcu(dev); |
| vg = nbp_vlan_group_rcu(p); |
| } else if (dev->priv_flags & IFF_EBRIDGE) { |
| br = netdev_priv(dev); |
| vg = br_vlan_group_rcu(br); |
| } |
| num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask); |
| rcu_read_unlock(); |
| |
| if (p && (p->flags & BR_VLAN_TUNNEL)) |
| vinfo_sz += br_get_vlan_tunnel_info_size(vg); |
| |
| /* Each VLAN is returned in bridge_vlan_info along with flags */ |
| vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
| |
| return vinfo_sz; |
| } |
| |
| static inline size_t br_port_info_size(void) |
| { |
| return nla_total_size(1) /* IFLA_BRPORT_STATE */ |
| + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ |
| + nla_total_size(4) /* IFLA_BRPORT_COST */ |
| + nla_total_size(1) /* IFLA_BRPORT_MODE */ |
| + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
| + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
| + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
| + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */ |
| + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
| + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
| + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */ |
| + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */ |
| + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
| + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
| + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */ |
| + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */ |
| + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */ |
| + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */ |
| + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */ |
| + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */ |
| + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */ |
| + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */ |
| + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */ |
| + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */ |
| + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */ |
| + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */ |
| #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */ |
| #endif |
| + 0; |
| } |
| |
| static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
| { |
| return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
| + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| + nla_total_size(4) /* IFLA_MASTER */ |
| + nla_total_size(4) /* IFLA_MTU */ |
| + nla_total_size(4) /* IFLA_LINK */ |
| + nla_total_size(1) /* IFLA_OPERSTATE */ |
| + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
| + nla_total_size(br_get_link_af_size_filtered(dev, |
| filter_mask)); /* IFLA_AF_SPEC */ |
| } |
| |
| static int br_port_fill_attrs(struct sk_buff *skb, |
| const struct net_bridge_port *p) |
| { |
| u8 mode = !!(p->flags & BR_HAIRPIN_MODE); |
| u64 timerval; |
| |
| if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || |
| nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || |
| nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || |
| nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
| nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
| nla_put_u8(skb, IFLA_BRPORT_PROTECT, |
| !!(p->flags & BR_ROOT_BLOCK)) || |
| nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, |
| !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
| nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST, |
| !!(p->flags & BR_MULTICAST_TO_UNICAST)) || |
| nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
| nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, |
| !!(p->flags & BR_FLOOD)) || |
| nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD, |
| !!(p->flags & BR_MCAST_FLOOD)) || |
| nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD, |
| !!(p->flags & BR_BCAST_FLOOD)) || |
| nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
| nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, |
| !!(p->flags & BR_PROXYARP_WIFI)) || |
| nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id), |
| &p->designated_root) || |
| nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id), |
| &p->designated_bridge) || |
| nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) || |
| nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) || |
| nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) || |
| nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) || |
| nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, |
| p->topology_change_ack) || |
| nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) || |
| nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags & |
| BR_VLAN_TUNNEL))) |
| return -EMSGSIZE; |
| |
| timerval = br_timer_value(&p->message_age_timer); |
| if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval, |
| IFLA_BRPORT_PAD)) |
| return -EMSGSIZE; |
| timerval = br_timer_value(&p->forward_delay_timer); |
| if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval, |
| IFLA_BRPORT_PAD)) |
| return -EMSGSIZE; |
| timerval = br_timer_value(&p->hold_timer); |
| if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval, |
| IFLA_BRPORT_PAD)) |
| return -EMSGSIZE; |
| |
| #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER, |
| p->multicast_router)) |
| return -EMSGSIZE; |
| #endif |
| |
| return 0; |
| } |
| |
| static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
| u16 vid_end, u16 flags) |
| { |
| struct bridge_vlan_info vinfo; |
| |
| if ((vid_end - vid_start) > 0) { |
| /* add range to skb */ |
| vinfo.vid = vid_start; |
| vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; |
| if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| sizeof(vinfo), &vinfo)) |
| goto nla_put_failure; |
| |
| vinfo.vid = vid_end; |
| vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; |
| if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| sizeof(vinfo), &vinfo)) |
| goto nla_put_failure; |
| } else { |
| vinfo.vid = vid_start; |
| vinfo.flags = flags; |
| if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| sizeof(vinfo), &vinfo)) |
| goto nla_put_failure; |
| } |
| |
| return 0; |
| |
| nla_put_failure: |
| return -EMSGSIZE; |
| } |
| |
| static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, |
| struct net_bridge_vlan_group *vg) |
| { |
| struct net_bridge_vlan *v; |
| u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0; |
| u16 flags, pvid; |
| int err = 0; |
| |
| /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan |
| * and mark vlan info with begin and end flags |
| * if vlaninfo represents a range |
| */ |
| pvid = br_get_pvid(vg); |
| list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| flags = 0; |
| if (!br_vlan_should_use(v)) |
| continue; |
| if (v->vid == pvid) |
| flags |= BRIDGE_VLAN_INFO_PVID; |
| |
| if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| |
| if (vid_range_start == 0) { |
| goto initvars; |
| } else if ((v->vid - vid_range_end) == 1 && |
| flags == vid_range_flags) { |
| vid_range_end = v->vid; |
| continue; |
| } else { |
| err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| vid_range_end, |
| vid_range_flags); |
| if (err) |
| return err; |
| } |
| |
| initvars: |
| vid_range_start = v->vid; |
| vid_range_end = v->vid; |
| vid_range_flags = flags; |
| } |
| |
| if (vid_range_start != 0) { |
| /* Call it once more to send any left over vlans */ |
| err = br_fill_ifvlaninfo_range(skb, vid_range_start, |
| vid_range_end, |
| vid_range_flags); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int br_fill_ifvlaninfo(struct sk_buff *skb, |
| struct net_bridge_vlan_group *vg) |
| { |
| struct bridge_vlan_info vinfo; |
| struct net_bridge_vlan *v; |
| u16 pvid; |
| |
| pvid = br_get_pvid(vg); |
| list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
| if (!br_vlan_should_use(v)) |
| continue; |
| |
| vinfo.vid = v->vid; |
| vinfo.flags = 0; |
| if (v->vid == pvid) |
| vinfo.flags |= BRIDGE_VLAN_INFO_PVID; |
| |
| if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| |
| if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
| sizeof(vinfo), &vinfo)) |
| goto nla_put_failure; |
| } |
| |
| return 0; |
| |
| nla_put_failure: |
| return -EMSGSIZE; |
| } |
| |
| /* |
| * Create one netlink message for one interface |
| * Contains port and master info as well as carrier and bridge state. |
| */ |
| static int br_fill_ifinfo(struct sk_buff *skb, |
| struct net_bridge_port *port, |
| u32 pid, u32 seq, int event, unsigned int flags, |
| u32 filter_mask, const struct net_device *dev) |
| { |
| struct net_bridge *br; |
| struct ifinfomsg *hdr; |
| struct nlmsghdr *nlh; |
| u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
| |
| if (port) |
| br = port->br; |
| else |
| br = netdev_priv(dev); |
| |
| br_debug(br, "br_fill_info event %d port %s master %s\n", |
| event, dev->name, br->dev->name); |
| |
| nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
| if (nlh == NULL) |
| return -EMSGSIZE; |
| |
| hdr = nlmsg_data(nlh); |
| hdr->ifi_family = AF_BRIDGE; |
| hdr->__ifi_pad = 0; |
| hdr->ifi_type = dev->type; |
| hdr->ifi_index = dev->ifindex; |
| hdr->ifi_flags = dev_get_flags(dev); |
| hdr->ifi_change = 0; |
| |
| if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || |
| nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| nla_put_u8(skb, IFLA_OPERSTATE, operstate) || |
| (dev->addr_len && |
| nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || |
| (dev->ifindex != dev_get_iflink(dev) && |
| nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) |
| goto nla_put_failure; |
| |
| if (event == RTM_NEWLINK && port) { |
| struct nlattr *nest |
| = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
| |
| if (nest == NULL || br_port_fill_attrs(skb, port) < 0) |
| goto nla_put_failure; |
| nla_nest_end(skb, nest); |
| } |
| |
| /* Check if the VID information is requested */ |
| if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
| (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { |
| struct net_bridge_vlan_group *vg; |
| struct nlattr *af; |
| int err; |
| |
| /* RCU needed because of the VLAN locking rules (rcu || rtnl) */ |
| rcu_read_lock(); |
| if (port) |
| vg = nbp_vlan_group_rcu(port); |
| else |
| vg = br_vlan_group_rcu(br); |
| |
| if (!vg || !vg->num_vlans) { |
| rcu_read_unlock(); |
| goto done; |
| } |
| af = nla_nest_start(skb, IFLA_AF_SPEC); |
| if (!af) { |
| rcu_read_unlock(); |
| goto nla_put_failure; |
| } |
| if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
| err = br_fill_ifvlaninfo_compressed(skb, vg); |
| else |
| err = br_fill_ifvlaninfo(skb, vg); |
| |
| if (port && (port->flags & BR_VLAN_TUNNEL)) |
| err = br_fill_vlan_tunnel_info(skb, vg); |
| rcu_read_unlock(); |
| if (err) |
| goto nla_put_failure; |
| nla_nest_end(skb, af); |
| } |
| |
| done: |
| nlmsg_end(skb, nlh); |
| return 0; |
| |
| nla_put_failure: |
| nlmsg_cancel(skb, nlh); |
| return -EMSGSIZE; |
| } |
| |
| /* |
| * 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_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) |
| { |
| if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK) |
| return -EINVAL; |
| |
| if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
| /* check if we are already processing a range */ |
| if (*vinfo_last) |
| return -EINVAL; |
| *vinfo_last = vinfo_curr; |
| /* don't allow range of pvids */ |
| if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID) |
| return -EINVAL; |
| return 0; |
| } |
| |
| if (*vinfo_last) { |
| struct bridge_vlan_info tmp_vinfo; |
| int v, err; |
| |
| if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
| return -EINVAL; |
| |
| if (vinfo_curr->vid <= (*vinfo_last)->vid) |
| return -EINVAL; |
| |
| memcpy(&tmp_vinfo, *vinfo_last, |
| sizeof(struct bridge_vlan_info)); |
| for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) { |
| tmp_vinfo.vid = v; |
| err = br_vlan_info(br, p, cmd, &tmp_vinfo); |
| if (err) |
| break; |
| } |
| *vinfo_last = NULL; |
| |
| return err; |
| } |
| |
| return br_vlan_info(br, p, cmd, vinfo_curr); |
| } |
| |
| static int br_afspec(struct net_bridge *br, |
| struct net_bridge_port *p, |
| struct nlattr *af_spec, |
| int cmd) |
| { |
| struct bridge_vlan_info *vinfo_curr = NULL; |
| struct bridge_vlan_info *vinfo_last = NULL; |
| struct nlattr *attr; |
| struct vtunnel_info tinfo_last = {}; |
| struct vtunnel_info tinfo_curr = {}; |
| int err = 0, rem; |
| |
| nla_for_each_nested(attr, af_spec, rem) { |
| err = 0; |
| switch (nla_type(attr)) { |
| case IFLA_BRIDGE_VLAN_TUNNEL_INFO: |
| if (!p || !(p->flags & BR_VLAN_TUNNEL)) |
| return -EINVAL; |
| err = br_parse_vlan_tunnel_info(attr, &tinfo_curr); |
| if (err) |
| return err; |
| err = br_process_vlan_tunnel_info(br, p, cmd, |
| &tinfo_curr, |
| &tinfo_last); |
| if (err) |
| return err; |
| break; |
| case IFLA_BRIDGE_VLAN_INFO: |
| if (nla_len(attr) != sizeof(struct bridge_vlan_info)) |
| return -EINVAL; |
| vinfo_curr = nla_data(attr); |
| err = br_process_vlan_info(br, p, cmd, vinfo_curr, |
| &vinfo_last); |
| if (err) |
| return 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 }, |
| [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 }, |
| [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 }, |
| [IFLA_BRPORT_BCAST_FLOOD] = { .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 int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], |
| int attrtype, unsigned long mask) |
| { |
| unsigned long flags; |
| int err; |
| |
| if (!tb[attrtype]) |
| return 0; |
| |
| if (nla_get_u8(tb[attrtype])) |
| flags = p->flags | mask; |
| else |
| flags = p->flags & ~mask; |
| |
| err = br_switchdev_set_port_flag(p, flags, mask); |
| if (err) |
| return err; |
| |
| p->flags = flags; |
| return 0; |
| } |
| |
| /* Process bridge protocol info on port */ |
| static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) |
| { |
| unsigned long old_flags = p->flags; |
| bool br_vlan_tunnel_old = false; |
| int err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
| if (err) |
| return err; |
| |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
| if (err) |
| return err; |
| |
| br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; |
| err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); |
| if (err) |
| return err; |
| |
| if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) |
| nbp_vlan_tunnel_info_flush(p); |
| |
| 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, NULL); |
| 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[], |
| struct netlink_ext_ack *extack) |
| { |
| 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; |
| } |
| } |
| |
| if (data[IFLA_BR_VLAN_DEFAULT_PVID]) { |
| __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]); |
| |
| if (defpvid >= VLAN_VID_MASK) |
| return -EINVAL; |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| static int br_port_slave_changelink(struct net_device *brdev, |
| struct net_device *dev, |
| struct nlattr *tb[], |
| struct nlattr *data[], |
| struct netlink_ext_ack *extack) |
| { |
| 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 netlink_ext_ack *extack) |
| { |
| 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 netlink_ext_ack *extack) |
| { |
| struct net_bridge *br = netdev_priv(dev); |
| int err; |
| |
| err = register_netdevice(dev); |
| if (err) |
| return 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, extack); |
| if (err) |
| br_dev_delete(dev, NULL); |
| |
| return err; |
| } |
| |
| 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->dev); |
| 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_work.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); |
| } |