diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c index 263b4de4de57ccf4beddbfc48e62967236450b9b..f8fc6241469ad72c441ee8fcee7c45b772d7cbdc 100644 --- a/net/bridge/br_ioctl.c +++ b/net/bridge/br_ioctl.c @@ -112,7 +112,9 @@ static int add_del_if(struct net_bridge *br, int ifindex, int isadd) static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct net_bridge *br = netdev_priv(dev); + struct net_bridge_port *p = NULL; unsigned long args[4]; + int ret = -EOPNOTSUPP; if (copy_from_user(args, rq->ifr_data, sizeof(args))) return -EFAULT; @@ -182,25 +184,29 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; - return br_set_forward_delay(br, args[1]); + ret = br_set_forward_delay(br, args[1]); + break; case BRCTL_SET_BRIDGE_HELLO_TIME: if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; - return br_set_hello_time(br, args[1]); + ret = br_set_hello_time(br, args[1]); + break; case BRCTL_SET_BRIDGE_MAX_AGE: if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; - return br_set_max_age(br, args[1]); + ret = br_set_max_age(br, args[1]); + break; case BRCTL_SET_AGEING_TIME: if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; - return br_set_ageing_time(br, args[1]); + ret = br_set_ageing_time(br, args[1]); + break; case BRCTL_GET_PORT_INFO: { @@ -240,20 +246,19 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) return -EPERM; br_stp_set_enabled(br, args[1]); - return 0; + ret = 0; + break; case BRCTL_SET_BRIDGE_PRIORITY: if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; br_stp_set_bridge_priority(br, args[1]); - return 0; + ret = 0; + break; case BRCTL_SET_PORT_PRIORITY: { - struct net_bridge_port *p; - int ret; - if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; @@ -263,14 +268,11 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) else ret = br_stp_set_port_priority(p, args[2]); spin_unlock_bh(&br->lock); - return ret; + break; } case BRCTL_SET_PATH_COST: { - struct net_bridge_port *p; - int ret; - if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; @@ -280,8 +282,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) else ret = br_stp_set_path_cost(p, args[2]); spin_unlock_bh(&br->lock); - - return ret; + break; } case BRCTL_GET_FDB_ENTRIES: @@ -289,7 +290,14 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) args[2], args[3]); } - return -EOPNOTSUPP; + if (!ret) { + if (p) + br_ifinfo_notify(RTM_NEWLINK, p); + else + netdev_state_change(br->dev); + } + + return ret; } static int old_deviceless(struct net *net, void __user *uarg) diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index 6b8091407ca3126b333c76c5104f5a8ca6803e49..70bddfd0f3e9f32c92083383690138e084776dff 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -43,7 +43,14 @@ static ssize_t store_bridge_parm(struct device *d, if (endp == buf) return -EINVAL; + if (!rtnl_trylock()) + return restart_syscall(); + err = (*set)(br, val); + if (!err) + netdev_state_change(br->dev); + rtnl_unlock(); + return err ? err : len; } @@ -101,15 +108,7 @@ static ssize_t ageing_time_show(struct device *d, static int set_ageing_time(struct net_bridge *br, unsigned long val) { - int ret; - - if (!rtnl_trylock()) - return restart_syscall(); - - ret = br_set_ageing_time(br, val); - rtnl_unlock(); - - return ret; + return br_set_ageing_time(br, val); } static ssize_t ageing_time_store(struct device *d, @@ -128,27 +127,18 @@ static ssize_t stp_state_show(struct device *d, } +static int set_stp_state(struct net_bridge *br, unsigned long val) +{ + br_stp_set_enabled(br, val); + + return 0; +} + static ssize_t stp_state_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) { - struct net_bridge *br = to_bridge(d); - char *endp; - unsigned long val; - - if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) - return -EPERM; - - val = simple_strtoul(buf, &endp, 0); - if (endp == buf) - return -EINVAL; - - if (!rtnl_trylock()) - return restart_syscall(); - br_stp_set_enabled(br, val); - rtnl_unlock(); - - return len; + return store_bridge_parm(d, buf, len, set_stp_state); } static DEVICE_ATTR_RW(stp_state); @@ -160,29 +150,22 @@ static ssize_t group_fwd_mask_show(struct device *d, return sprintf(buf, "%#x\n", br->group_fwd_mask); } - -static ssize_t group_fwd_mask_store(struct device *d, - struct device_attribute *attr, - const char *buf, - size_t len) +static int set_group_fwd_mask(struct net_bridge *br, unsigned long val) { - struct net_bridge *br = to_bridge(d); - char *endp; - unsigned long val; - - if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) - return -EPERM; - - val = simple_strtoul(buf, &endp, 0); - if (endp == buf) - return -EINVAL; - if (val & BR_GROUPFWD_RESTRICTED) return -EINVAL; br->group_fwd_mask = val; - return len; + return 0; +} + +static ssize_t group_fwd_mask_store(struct device *d, + struct device_attribute *attr, + const char *buf, + size_t len) +{ + return store_bridge_parm(d, buf, len, set_group_fwd_mask); } static DEVICE_ATTR_RW(group_fwd_mask); @@ -328,6 +311,7 @@ static ssize_t group_addr_store(struct device *d, br->group_addr_set = true; br_recalculate_fwd_mask(br); + netdev_state_change(br->dev); rtnl_unlock(); @@ -336,17 +320,17 @@ static ssize_t group_addr_store(struct device *d, static DEVICE_ATTR_RW(group_addr); +static int set_flush(struct net_bridge *br, unsigned long val) +{ + br_fdb_flush(br); + return 0; +} + static ssize_t flush_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) { - struct net_bridge *br = to_bridge(d); - - if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) - return -EPERM; - - br_fdb_flush(br); - return len; + return store_bridge_parm(d, buf, len, set_flush); } static DEVICE_ATTR_WO(flush); diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c index efe415ad842a4fad159fb24590d11f6308a88f83..1e04d4d44273f50e60c4eee4b3d40d63a1f03500 100644 --- a/net/bridge/br_sysfs_if.c +++ b/net/bridge/br_sysfs_if.c @@ -61,7 +61,6 @@ static int store_flag(struct net_bridge_port *p, unsigned long v, if (flags != p->flags) { p->flags = flags; br_port_flags_change(p, mask); - br_ifinfo_notify(RTM_NEWLINK, p); } return 0; } @@ -253,8 +252,10 @@ static ssize_t brport_store(struct kobject *kobj, spin_lock_bh(&p->br->lock); ret = brport_attr->store(p, val); spin_unlock_bh(&p->br->lock); - if (ret == 0) + if (!ret) { + br_ifinfo_notify(RTM_NEWLINK, p); ret = count; + } } rtnl_unlock(); } diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 9309bb4f2a5b240edcea6f9c3a4a45d2c6413874..e001152d6ad1a406c81c4fe3e91d6f983b189aeb 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -651,15 +651,7 @@ int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) { - int err; - - if (!rtnl_trylock()) - return restart_syscall(); - - err = __br_vlan_filter_toggle(br, val); - rtnl_unlock(); - - return err; + return __br_vlan_filter_toggle(br, val); } int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) @@ -713,18 +705,10 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) int br_vlan_set_proto(struct net_bridge *br, unsigned long val) { - int err; - if (val != ETH_P_8021Q && val != ETH_P_8021AD) return -EPROTONOSUPPORT; - if (!rtnl_trylock()) - return restart_syscall(); - - err = __br_vlan_set_proto(br, htons(val)); - rtnl_unlock(); - - return err; + return __br_vlan_set_proto(br, htons(val)); } static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) @@ -855,21 +839,17 @@ int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) if (val >= VLAN_VID_MASK) return -EINVAL; - if (!rtnl_trylock()) - return restart_syscall(); - if (pvid == br->default_pvid) - goto unlock; + goto out; /* Only allow default pvid change when filtering is disabled */ if (br->vlan_enabled) { pr_info_once("Please disable vlan filtering to change default_pvid\n"); err = -EPERM; - goto unlock; + goto out; } err = __br_vlan_set_default_pvid(br, pvid); -unlock: - rtnl_unlock(); +out: return err; }