12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * Sysfs attributes of bridge ports 41da177e4SLinus Torvalds * Linux ethernet bridge 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Authors: 71da177e4SLinus Torvalds * Stephen Hemminger <shemminger@osdl.org> 81da177e4SLinus Torvalds */ 91da177e4SLinus Torvalds 104fc268d2SRandy Dunlap #include <linux/capability.h> 111da177e4SLinus Torvalds #include <linux/kernel.h> 121da177e4SLinus Torvalds #include <linux/netdevice.h> 131da177e4SLinus Torvalds #include <linux/if_bridge.h> 141da177e4SLinus Torvalds #include <linux/rtnetlink.h> 151da177e4SLinus Torvalds #include <linux/spinlock.h> 16174cd4b1SIngo Molnar #include <linux/sched/signal.h> 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds #include "br_private.h" 191da177e4SLinus Torvalds 201e16f382SNikolay Aleksandrov /* IMPORTANT: new bridge port options must be added with netlink support only 211e16f382SNikolay Aleksandrov * please do not add new sysfs entries 221e16f382SNikolay Aleksandrov */ 231e16f382SNikolay Aleksandrov 241da177e4SLinus Torvalds struct brport_attribute { 251da177e4SLinus Torvalds struct attribute attr; 261da177e4SLinus Torvalds ssize_t (*show)(struct net_bridge_port *, char *); 2714f98f25Sstephen hemminger int (*store)(struct net_bridge_port *, unsigned long); 28a5f3ea54SNikolay Aleksandrov int (*store_raw)(struct net_bridge_port *, char *); 29a5f3ea54SNikolay Aleksandrov }; 30a5f3ea54SNikolay Aleksandrov 31a5f3ea54SNikolay Aleksandrov #define BRPORT_ATTR_RAW(_name, _mode, _show, _store) \ 32a5f3ea54SNikolay Aleksandrov const struct brport_attribute brport_attr_##_name = { \ 33a5f3ea54SNikolay Aleksandrov .attr = {.name = __stringify(_name), \ 34a5f3ea54SNikolay Aleksandrov .mode = _mode }, \ 35a5f3ea54SNikolay Aleksandrov .show = _show, \ 36a5f3ea54SNikolay Aleksandrov .store_raw = _store, \ 371da177e4SLinus Torvalds }; 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds #define BRPORT_ATTR(_name, _mode, _show, _store) \ 405a0d513bSstephen hemminger const struct brport_attribute brport_attr_##_name = { \ 411da177e4SLinus Torvalds .attr = {.name = __stringify(_name), \ 427b595756STejun Heo .mode = _mode }, \ 431da177e4SLinus Torvalds .show = _show, \ 441da177e4SLinus Torvalds .store = _store, \ 451da177e4SLinus Torvalds }; 461da177e4SLinus Torvalds 47cd753732Sstephen hemminger #define BRPORT_ATTR_FLAG(_name, _mask) \ 48cd753732Sstephen hemminger static ssize_t show_##_name(struct net_bridge_port *p, char *buf) \ 49cd753732Sstephen hemminger { \ 50cd753732Sstephen hemminger return sprintf(buf, "%d\n", !!(p->flags & _mask)); \ 51cd753732Sstephen hemminger } \ 52cd753732Sstephen hemminger static int store_##_name(struct net_bridge_port *p, unsigned long v) \ 53cd753732Sstephen hemminger { \ 5463c3a622SVlad Yasevich return store_flag(p, v, _mask); \ 55cd753732Sstephen hemminger } \ 56d6444062SJoe Perches static BRPORT_ATTR(_name, 0644, \ 57cd753732Sstephen hemminger show_##_name, store_##_name) 58cd753732Sstephen hemminger 5963c3a622SVlad Yasevich static int store_flag(struct net_bridge_port *p, unsigned long v, 6063c3a622SVlad Yasevich unsigned long mask) 6163c3a622SVlad Yasevich { 62*078bbb85SVladimir Oltean struct netlink_ext_ack extack = {0}; 638043c845SVladimir Oltean unsigned long flags = p->flags; 648043c845SVladimir Oltean int err; 6563c3a622SVlad Yasevich 6663c3a622SVlad Yasevich if (v) 6763c3a622SVlad Yasevich flags |= mask; 6863c3a622SVlad Yasevich else 6963c3a622SVlad Yasevich flags &= ~mask; 7063c3a622SVlad Yasevich 7163c3a622SVlad Yasevich if (flags != p->flags) { 72*078bbb85SVladimir Oltean err = br_switchdev_set_port_flag(p, flags, mask, &extack); 73*078bbb85SVladimir Oltean if (err) { 74*078bbb85SVladimir Oltean netdev_err(p->dev, "%s\n", extack._msg); 758043c845SVladimir Oltean return err; 76*078bbb85SVladimir Oltean } 778043c845SVladimir Oltean 7863c3a622SVlad Yasevich p->flags = flags; 79e028e4b8SVlad Yasevich br_port_flags_change(p, mask); 8063c3a622SVlad Yasevich } 8163c3a622SVlad Yasevich return 0; 8263c3a622SVlad Yasevich } 83cd753732Sstephen hemminger 841da177e4SLinus Torvalds static ssize_t show_path_cost(struct net_bridge_port *p, char *buf) 851da177e4SLinus Torvalds { 861da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->path_cost); 871da177e4SLinus Torvalds } 8814f98f25Sstephen hemminger 89d6444062SJoe Perches static BRPORT_ATTR(path_cost, 0644, 9014f98f25Sstephen hemminger show_path_cost, br_stp_set_path_cost); 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds static ssize_t show_priority(struct net_bridge_port *p, char *buf) 931da177e4SLinus Torvalds { 941da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->priority); 951da177e4SLinus Torvalds } 9614f98f25Sstephen hemminger 97d6444062SJoe Perches static BRPORT_ATTR(priority, 0644, 9814f98f25Sstephen hemminger show_priority, br_stp_set_port_priority); 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds static ssize_t show_designated_root(struct net_bridge_port *p, char *buf) 1011da177e4SLinus Torvalds { 1021da177e4SLinus Torvalds return br_show_bridge_id(buf, &p->designated_root); 1031da177e4SLinus Torvalds } 104d6444062SJoe Perches static BRPORT_ATTR(designated_root, 0444, show_designated_root, NULL); 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds static ssize_t show_designated_bridge(struct net_bridge_port *p, char *buf) 1071da177e4SLinus Torvalds { 1081da177e4SLinus Torvalds return br_show_bridge_id(buf, &p->designated_bridge); 1091da177e4SLinus Torvalds } 110d6444062SJoe Perches static BRPORT_ATTR(designated_bridge, 0444, show_designated_bridge, NULL); 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds static ssize_t show_designated_port(struct net_bridge_port *p, char *buf) 1131da177e4SLinus Torvalds { 1141da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->designated_port); 1151da177e4SLinus Torvalds } 116d6444062SJoe Perches static BRPORT_ATTR(designated_port, 0444, show_designated_port, NULL); 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds static ssize_t show_designated_cost(struct net_bridge_port *p, char *buf) 1191da177e4SLinus Torvalds { 1201da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->designated_cost); 1211da177e4SLinus Torvalds } 122d6444062SJoe Perches static BRPORT_ATTR(designated_cost, 0444, show_designated_cost, NULL); 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds static ssize_t show_port_id(struct net_bridge_port *p, char *buf) 1251da177e4SLinus Torvalds { 1261da177e4SLinus Torvalds return sprintf(buf, "0x%x\n", p->port_id); 1271da177e4SLinus Torvalds } 128d6444062SJoe Perches static BRPORT_ATTR(port_id, 0444, show_port_id, NULL); 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds static ssize_t show_port_no(struct net_bridge_port *p, char *buf) 1311da177e4SLinus Torvalds { 1321da177e4SLinus Torvalds return sprintf(buf, "0x%x\n", p->port_no); 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds 135d6444062SJoe Perches static BRPORT_ATTR(port_no, 0444, show_port_no, NULL); 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds static ssize_t show_change_ack(struct net_bridge_port *p, char *buf) 1381da177e4SLinus Torvalds { 1391da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->topology_change_ack); 1401da177e4SLinus Torvalds } 141d6444062SJoe Perches static BRPORT_ATTR(change_ack, 0444, show_change_ack, NULL); 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds static ssize_t show_config_pending(struct net_bridge_port *p, char *buf) 1441da177e4SLinus Torvalds { 1451da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->config_pending); 1461da177e4SLinus Torvalds } 147d6444062SJoe Perches static BRPORT_ATTR(config_pending, 0444, show_config_pending, NULL); 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds static ssize_t show_port_state(struct net_bridge_port *p, char *buf) 1501da177e4SLinus Torvalds { 1511da177e4SLinus Torvalds return sprintf(buf, "%d\n", p->state); 1521da177e4SLinus Torvalds } 153d6444062SJoe Perches static BRPORT_ATTR(state, 0444, show_port_state, NULL); 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds static ssize_t show_message_age_timer(struct net_bridge_port *p, 1561da177e4SLinus Torvalds char *buf) 1571da177e4SLinus Torvalds { 1581da177e4SLinus Torvalds return sprintf(buf, "%ld\n", br_timer_value(&p->message_age_timer)); 1591da177e4SLinus Torvalds } 160d6444062SJoe Perches static BRPORT_ATTR(message_age_timer, 0444, show_message_age_timer, NULL); 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds static ssize_t show_forward_delay_timer(struct net_bridge_port *p, 1631da177e4SLinus Torvalds char *buf) 1641da177e4SLinus Torvalds { 1651da177e4SLinus Torvalds return sprintf(buf, "%ld\n", br_timer_value(&p->forward_delay_timer)); 1661da177e4SLinus Torvalds } 167d6444062SJoe Perches static BRPORT_ATTR(forward_delay_timer, 0444, show_forward_delay_timer, NULL); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds static ssize_t show_hold_timer(struct net_bridge_port *p, 1701da177e4SLinus Torvalds char *buf) 1711da177e4SLinus Torvalds { 1721da177e4SLinus Torvalds return sprintf(buf, "%ld\n", br_timer_value(&p->hold_timer)); 1731da177e4SLinus Torvalds } 174d6444062SJoe Perches static BRPORT_ATTR(hold_timer, 0444, show_hold_timer, NULL); 1751da177e4SLinus Torvalds 17614f98f25Sstephen hemminger static int store_flush(struct net_bridge_port *p, unsigned long v) 1779cf63747SStephen Hemminger { 1781ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(p->br, p, 0, 0); // Don't delete local entry 1799cf63747SStephen Hemminger return 0; 1809cf63747SStephen Hemminger } 181d6444062SJoe Perches static BRPORT_ATTR(flush, 0200, NULL, store_flush); 1829cf63747SStephen Hemminger 1835af48b59SNikolay Aleksandrov static ssize_t show_group_fwd_mask(struct net_bridge_port *p, char *buf) 1845af48b59SNikolay Aleksandrov { 1855af48b59SNikolay Aleksandrov return sprintf(buf, "%#x\n", p->group_fwd_mask); 1865af48b59SNikolay Aleksandrov } 1875af48b59SNikolay Aleksandrov 1885af48b59SNikolay Aleksandrov static int store_group_fwd_mask(struct net_bridge_port *p, 1895af48b59SNikolay Aleksandrov unsigned long v) 1905af48b59SNikolay Aleksandrov { 1915af48b59SNikolay Aleksandrov if (v & BR_GROUPFWD_MACPAUSE) 1925af48b59SNikolay Aleksandrov return -EINVAL; 1935af48b59SNikolay Aleksandrov p->group_fwd_mask = v; 1945af48b59SNikolay Aleksandrov 1955af48b59SNikolay Aleksandrov return 0; 1965af48b59SNikolay Aleksandrov } 197d6444062SJoe Perches static BRPORT_ATTR(group_fwd_mask, 0644, show_group_fwd_mask, 1985af48b59SNikolay Aleksandrov store_group_fwd_mask); 1995af48b59SNikolay Aleksandrov 2002756f68cSNikolay Aleksandrov static ssize_t show_backup_port(struct net_bridge_port *p, char *buf) 2012756f68cSNikolay Aleksandrov { 2022756f68cSNikolay Aleksandrov struct net_bridge_port *backup_p; 2032756f68cSNikolay Aleksandrov int ret = 0; 2042756f68cSNikolay Aleksandrov 2052756f68cSNikolay Aleksandrov rcu_read_lock(); 2062756f68cSNikolay Aleksandrov backup_p = rcu_dereference(p->backup_port); 2072756f68cSNikolay Aleksandrov if (backup_p) 2082756f68cSNikolay Aleksandrov ret = sprintf(buf, "%s\n", backup_p->dev->name); 2092756f68cSNikolay Aleksandrov rcu_read_unlock(); 2102756f68cSNikolay Aleksandrov 2112756f68cSNikolay Aleksandrov return ret; 2122756f68cSNikolay Aleksandrov } 2132756f68cSNikolay Aleksandrov 2142756f68cSNikolay Aleksandrov static int store_backup_port(struct net_bridge_port *p, char *buf) 2152756f68cSNikolay Aleksandrov { 2162756f68cSNikolay Aleksandrov struct net_device *backup_dev = NULL; 2172756f68cSNikolay Aleksandrov char *nl = strchr(buf, '\n'); 2182756f68cSNikolay Aleksandrov 2192756f68cSNikolay Aleksandrov if (nl) 2202756f68cSNikolay Aleksandrov *nl = '\0'; 2212756f68cSNikolay Aleksandrov 2222756f68cSNikolay Aleksandrov if (strlen(buf) > 0) { 2232756f68cSNikolay Aleksandrov backup_dev = __dev_get_by_name(dev_net(p->dev), buf); 2242756f68cSNikolay Aleksandrov if (!backup_dev) 2252756f68cSNikolay Aleksandrov return -ENOENT; 2262756f68cSNikolay Aleksandrov } 2272756f68cSNikolay Aleksandrov 2282756f68cSNikolay Aleksandrov return nbp_backup_change(p, backup_dev); 2292756f68cSNikolay Aleksandrov } 2302756f68cSNikolay Aleksandrov static BRPORT_ATTR_RAW(backup_port, 0644, show_backup_port, store_backup_port); 2312756f68cSNikolay Aleksandrov 232cd753732Sstephen hemminger BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE); 233a2e01a65Sstephen hemminger BRPORT_ATTR_FLAG(bpdu_guard, BR_BPDU_GUARD); 2341007dd1aSstephen hemminger BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK); 2359ba18891SVlad Yasevich BRPORT_ATTR_FLAG(learning, BR_LEARNING); 236867a5943SVlad Yasevich BRPORT_ATTR_FLAG(unicast_flood, BR_FLOOD); 23795850116SKyeyoon Park BRPORT_ATTR_FLAG(proxyarp, BR_PROXYARP); 238842a9ae0SJouni Malinen BRPORT_ATTR_FLAG(proxyarp_wifi, BR_PROXYARP_WIFI); 239b6cb5ac8SNikolay Aleksandrov BRPORT_ATTR_FLAG(multicast_flood, BR_MCAST_FLOOD); 24099f906e9SMike Manning BRPORT_ATTR_FLAG(broadcast_flood, BR_BCAST_FLOOD); 241821f1b21SRoopa Prabhu BRPORT_ATTR_FLAG(neigh_suppress, BR_NEIGH_SUPPRESS); 2427d850abdSNikolay Aleksandrov BRPORT_ATTR_FLAG(isolated, BR_ISOLATED); 2433982d3d2SFischer, Anna 2440909e117SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 2450909e117SHerbert Xu static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf) 2460909e117SHerbert Xu { 2470909e117SHerbert Xu return sprintf(buf, "%d\n", p->multicast_router); 2480909e117SHerbert Xu } 2490909e117SHerbert Xu 25014f98f25Sstephen hemminger static int store_multicast_router(struct net_bridge_port *p, 2510909e117SHerbert Xu unsigned long v) 2520909e117SHerbert Xu { 2530909e117SHerbert Xu return br_multicast_set_port_router(p, v); 2540909e117SHerbert Xu } 255d6444062SJoe Perches static BRPORT_ATTR(multicast_router, 0644, show_multicast_router, 2560909e117SHerbert Xu store_multicast_router); 25750426b59SAmerigo Wang 258c2d3babfSDavid S. Miller BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE); 2596db6f0eaSFelix Fietkau BRPORT_ATTR_FLAG(multicast_to_unicast, BR_MULTICAST_TO_UNICAST); 2600909e117SHerbert Xu #endif 2610909e117SHerbert Xu 2625a0d513bSstephen hemminger static const struct brport_attribute *brport_attrs[] = { 2631da177e4SLinus Torvalds &brport_attr_path_cost, 2641da177e4SLinus Torvalds &brport_attr_priority, 2651da177e4SLinus Torvalds &brport_attr_port_id, 2661da177e4SLinus Torvalds &brport_attr_port_no, 2671da177e4SLinus Torvalds &brport_attr_designated_root, 2681da177e4SLinus Torvalds &brport_attr_designated_bridge, 2691da177e4SLinus Torvalds &brport_attr_designated_port, 2701da177e4SLinus Torvalds &brport_attr_designated_cost, 2711da177e4SLinus Torvalds &brport_attr_state, 2721da177e4SLinus Torvalds &brport_attr_change_ack, 2731da177e4SLinus Torvalds &brport_attr_config_pending, 2741da177e4SLinus Torvalds &brport_attr_message_age_timer, 2751da177e4SLinus Torvalds &brport_attr_forward_delay_timer, 2761da177e4SLinus Torvalds &brport_attr_hold_timer, 2779cf63747SStephen Hemminger &brport_attr_flush, 2783982d3d2SFischer, Anna &brport_attr_hairpin_mode, 279a2e01a65Sstephen hemminger &brport_attr_bpdu_guard, 2801007dd1aSstephen hemminger &brport_attr_root_block, 2819ba18891SVlad Yasevich &brport_attr_learning, 282867a5943SVlad Yasevich &brport_attr_unicast_flood, 2830909e117SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 2840909e117SHerbert Xu &brport_attr_multicast_router, 28550426b59SAmerigo Wang &brport_attr_multicast_fast_leave, 2866db6f0eaSFelix Fietkau &brport_attr_multicast_to_unicast, 2870909e117SHerbert Xu #endif 28895850116SKyeyoon Park &brport_attr_proxyarp, 289842a9ae0SJouni Malinen &brport_attr_proxyarp_wifi, 2904eb6753cSNikolay Aleksandrov &brport_attr_multicast_flood, 29199f906e9SMike Manning &brport_attr_broadcast_flood, 2925af48b59SNikolay Aleksandrov &brport_attr_group_fwd_mask, 293821f1b21SRoopa Prabhu &brport_attr_neigh_suppress, 2947d850abdSNikolay Aleksandrov &brport_attr_isolated, 2952756f68cSNikolay Aleksandrov &brport_attr_backup_port, 2961da177e4SLinus Torvalds NULL 2971da177e4SLinus Torvalds }; 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds #define to_brport_attr(_at) container_of(_at, struct brport_attribute, attr) 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds static ssize_t brport_show(struct kobject *kobj, 3021da177e4SLinus Torvalds struct attribute *attr, char *buf) 3031da177e4SLinus Torvalds { 3041da177e4SLinus Torvalds struct brport_attribute *brport_attr = to_brport_attr(attr); 305705e0deaSTyler Hicks struct net_bridge_port *p = kobj_to_brport(kobj); 3061da177e4SLinus Torvalds 3071b12580aSXin Long if (!brport_attr->show) 3081b12580aSXin Long return -EINVAL; 3091b12580aSXin Long 3101da177e4SLinus Torvalds return brport_attr->show(p, buf); 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds static ssize_t brport_store(struct kobject *kobj, 3141da177e4SLinus Torvalds struct attribute *attr, 3151da177e4SLinus Torvalds const char *buf, size_t count) 3161da177e4SLinus Torvalds { 3171da177e4SLinus Torvalds struct brport_attribute *brport_attr = to_brport_attr(attr); 318705e0deaSTyler Hicks struct net_bridge_port *p = kobj_to_brport(kobj); 3191da177e4SLinus Torvalds ssize_t ret = -EINVAL; 3201da177e4SLinus Torvalds unsigned long val; 321a5f3ea54SNikolay Aleksandrov char *endp; 3221da177e4SLinus Torvalds 323cb990503SEric W. Biederman if (!ns_capable(dev_net(p->dev)->user_ns, CAP_NET_ADMIN)) 3241da177e4SLinus Torvalds return -EPERM; 3251da177e4SLinus Torvalds 326af38f298SEric W. Biederman if (!rtnl_trylock()) 327af38f298SEric W. Biederman return restart_syscall(); 328a5f3ea54SNikolay Aleksandrov 329a5f3ea54SNikolay Aleksandrov if (brport_attr->store_raw) { 330a5f3ea54SNikolay Aleksandrov char *buf_copy; 331a5f3ea54SNikolay Aleksandrov 332a5f3ea54SNikolay Aleksandrov buf_copy = kstrndup(buf, count, GFP_KERNEL); 333a5f3ea54SNikolay Aleksandrov if (!buf_copy) { 334a5f3ea54SNikolay Aleksandrov ret = -ENOMEM; 335a5f3ea54SNikolay Aleksandrov goto out_unlock; 336a5f3ea54SNikolay Aleksandrov } 337a5f3ea54SNikolay Aleksandrov spin_lock_bh(&p->br->lock); 338a5f3ea54SNikolay Aleksandrov ret = brport_attr->store_raw(p, buf_copy); 339a5f3ea54SNikolay Aleksandrov spin_unlock_bh(&p->br->lock); 340a5f3ea54SNikolay Aleksandrov kfree(buf_copy); 341a5f3ea54SNikolay Aleksandrov } else if (brport_attr->store) { 342a5f3ea54SNikolay Aleksandrov val = simple_strtoul(buf, &endp, 0); 343a5f3ea54SNikolay Aleksandrov if (endp == buf) 344a5f3ea54SNikolay Aleksandrov goto out_unlock; 3451da177e4SLinus Torvalds spin_lock_bh(&p->br->lock); 3461da177e4SLinus Torvalds ret = brport_attr->store(p, val); 3471da177e4SLinus Torvalds spin_unlock_bh(&p->br->lock); 348a5f3ea54SNikolay Aleksandrov } 349a5f3ea54SNikolay Aleksandrov 350bdaf0d5dSXin Long if (!ret) { 35192899063SNikolay Aleksandrov br_ifinfo_notify(RTM_NEWLINK, NULL, p); 3521da177e4SLinus Torvalds ret = count; 3531da177e4SLinus Torvalds } 354a5f3ea54SNikolay Aleksandrov out_unlock: 3551da177e4SLinus Torvalds rtnl_unlock(); 356a5f3ea54SNikolay Aleksandrov 3571da177e4SLinus Torvalds return ret; 3581da177e4SLinus Torvalds } 3591da177e4SLinus Torvalds 36052cf25d0SEmese Revfy const struct sysfs_ops brport_sysfs_ops = { 3611da177e4SLinus Torvalds .show = brport_show, 3621da177e4SLinus Torvalds .store = brport_store, 3631da177e4SLinus Torvalds }; 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds /* 3661da177e4SLinus Torvalds * Add sysfs entries to ethernet device added to a bridge. 3671da177e4SLinus Torvalds * Creates a brport subdirectory with bridge attributes. 368e0f43752SSimon Arlott * Puts symlink in bridge's brif subdirectory 3691da177e4SLinus Torvalds */ 3701da177e4SLinus Torvalds int br_sysfs_addif(struct net_bridge_port *p) 3711da177e4SLinus Torvalds { 3721da177e4SLinus Torvalds struct net_bridge *br = p->br; 3735a0d513bSstephen hemminger const struct brport_attribute **a; 3741da177e4SLinus Torvalds int err; 3751da177e4SLinus Torvalds 37643cb76d9SGreg Kroah-Hartman err = sysfs_create_link(&p->kobj, &br->dev->dev.kobj, 3771da177e4SLinus Torvalds SYSFS_BRIDGE_PORT_LINK); 3781da177e4SLinus Torvalds if (err) 379e0f43752SSimon Arlott return err; 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds for (a = brport_attrs; *a; ++a) { 3821da177e4SLinus Torvalds err = sysfs_create_file(&p->kobj, &((*a)->attr)); 3831da177e4SLinus Torvalds if (err) 384e0f43752SSimon Arlott return err; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 387e0f43752SSimon Arlott strlcpy(p->sysfs_name, p->dev->name, IFNAMSIZ); 388e0f43752SSimon Arlott return sysfs_create_link(br->ifobj, &p->kobj, p->sysfs_name); 389e0f43752SSimon Arlott } 390e0f43752SSimon Arlott 391e0f43752SSimon Arlott /* Rename bridge's brif symlink */ 392e0f43752SSimon Arlott int br_sysfs_renameif(struct net_bridge_port *p) 393e0f43752SSimon Arlott { 394e0f43752SSimon Arlott struct net_bridge *br = p->br; 395e0f43752SSimon Arlott int err; 396e0f43752SSimon Arlott 397e0f43752SSimon Arlott /* If a rename fails, the rollback will cause another 398e0f43752SSimon Arlott * rename call with the existing name. 399e0f43752SSimon Arlott */ 400e0f43752SSimon Arlott if (!strncmp(p->sysfs_name, p->dev->name, IFNAMSIZ)) 401e0f43752SSimon Arlott return 0; 402e0f43752SSimon Arlott 403e0f43752SSimon Arlott err = sysfs_rename_link(br->ifobj, &p->kobj, 404e0f43752SSimon Arlott p->sysfs_name, p->dev->name); 405e0f43752SSimon Arlott if (err) 406e0f43752SSimon Arlott netdev_notice(br->dev, "unable to rename link %s to %s", 407e0f43752SSimon Arlott p->sysfs_name, p->dev->name); 408e0f43752SSimon Arlott else 409e0f43752SSimon Arlott strlcpy(p->sysfs_name, p->dev->name, IFNAMSIZ); 410e0f43752SSimon Arlott 4111da177e4SLinus Torvalds return err; 4121da177e4SLinus Torvalds } 413