12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283 |
- /*
- * 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"
- 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;
- struct net_bridge *br;
- int num_vlan_infos;
- 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();
- /* Each VLAN is returned in bridge_vlan_info along with flags */
- return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
- }
- 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_LEARNING */
- + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
- + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
- + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
- + 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(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
- + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
- + nla_total_size(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_LEARNING, !!(p->flags & BR_LEARNING)) ||
- nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_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))
- return -EMSGSIZE;
- timerval = br_timer_value(&p->message_age_timer);
- if (nla_put_u64(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval))
- return -EMSGSIZE;
- timerval = br_timer_value(&p->forward_delay_timer);
- if (nla_put_u64(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval))
- return -EMSGSIZE;
- timerval = br_timer_value(&p->hold_timer);
- if (nla_put_u64(skb, IFLA_BRPORT_HOLD_TIMER, timerval))
- 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);
- 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_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_log_state(p);
- 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_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;
- }
- }
- 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 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 },
- };
- 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;
- }
- #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);
- }
- #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;
- 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);
- 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 */
- #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(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
- nla_total_size(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(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(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
- nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
- #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(skb, IFLA_BR_HELLO_TIMER, clockval))
- return -EMSGSIZE;
- clockval = br_timer_value(&br->tcn_timer);
- if (nla_put_u64(skb, IFLA_BR_TCN_TIMER, clockval))
- return -EMSGSIZE;
- clockval = br_timer_value(&br->topology_change_timer);
- if (nla_put_u64(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval))
- return -EMSGSIZE;
- clockval = br_timer_value(&br->gc_timer);
- if (nla_put_u64(skb, IFLA_BR_GC_TIMER, clockval))
- 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))
- 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_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))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_membership_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_querier_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_query_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval))
- return -EMSGSIZE;
- clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
- if (nla_put_u64(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval))
- 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 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,
- .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);
- }
|