diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/net/bridge/br_mdb.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/net/bridge/br_mdb.c')
-rw-r--r-- | kernel/net/bridge/br_mdb.c | 159 |
1 files changed, 141 insertions, 18 deletions
diff --git a/kernel/net/bridge/br_mdb.c b/kernel/net/bridge/br_mdb.c index d1f910c0d..cd8deea2d 100644 --- a/kernel/net/bridge/br_mdb.c +++ b/kernel/net/bridge/br_mdb.c @@ -85,6 +85,7 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb, memset(&e, 0, sizeof(e)); e.ifindex = port->dev->ifindex; e.state = p->state; + e.vid = p->addr.vid; if (p->addr.proto == htons(ETH_P_IP)) e.addr.u.ip4 = p->addr.u.ip4; #if IS_ENABLED(CONFIG_IPV6) @@ -230,7 +231,7 @@ errout: } void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, - struct br_ip *group, int type) + struct br_ip *group, int type, u8 state) { struct br_mdb_entry entry; @@ -241,9 +242,78 @@ void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, #if IS_ENABLED(CONFIG_IPV6) entry.addr.u.ip6 = group->u.ip6; #endif + entry.state = state; + entry.vid = group->vid; __br_mdb_notify(dev, &entry, type); } +static int nlmsg_populate_rtr_fill(struct sk_buff *skb, + struct net_device *dev, + int ifindex, u32 pid, + u32 seq, int type, unsigned int flags) +{ + struct br_port_msg *bpm; + struct nlmsghdr *nlh; + struct nlattr *nest; + + nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), NLM_F_MULTI); + if (!nlh) + return -EMSGSIZE; + + bpm = nlmsg_data(nlh); + memset(bpm, 0, sizeof(*bpm)); + bpm->family = AF_BRIDGE; + bpm->ifindex = dev->ifindex; + nest = nla_nest_start(skb, MDBA_ROUTER); + if (!nest) + goto cancel; + + if (nla_put_u32(skb, MDBA_ROUTER_PORT, ifindex)) + goto end; + + nla_nest_end(skb, nest); + nlmsg_end(skb, nlh); + return 0; + +end: + nla_nest_end(skb, nest); +cancel: + nlmsg_cancel(skb, nlh); + return -EMSGSIZE; +} + +static inline size_t rtnl_rtr_nlmsg_size(void) +{ + return NLMSG_ALIGN(sizeof(struct br_port_msg)) + + nla_total_size(sizeof(__u32)); +} + +void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port, + int type) +{ + struct net *net = dev_net(dev); + struct sk_buff *skb; + int err = -ENOBUFS; + int ifindex; + + ifindex = port ? port->dev->ifindex : 0; + skb = nlmsg_new(rtnl_rtr_nlmsg_size(), GFP_ATOMIC); + if (!skb) + goto errout; + + err = nlmsg_populate_rtr_fill(skb, dev, ifindex, 0, 0, type, NTF_SELF); + if (err < 0) { + kfree_skb(skb); + goto errout; + } + + rtnl_notify(skb, net, 0, RTNLGRP_MDB, NULL, GFP_ATOMIC); + return; + +errout: + rtnl_set_sk_err(net, RTNLGRP_MDB, err); +} + static bool is_valid_mdb_entry(struct br_mdb_entry *entry) { if (entry->ifindex == 0) @@ -263,6 +333,8 @@ static bool is_valid_mdb_entry(struct br_mdb_entry *entry) return false; if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) return false; + if (entry->vid >= VLAN_VID_MASK) + return false; return true; } @@ -323,6 +395,7 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port, struct net_bridge_port_group *p; struct net_bridge_port_group __rcu **pp; struct net_bridge_mdb_htable *mdb; + unsigned long now = jiffies; int err; mdb = mlock_dereference(br->mdb, br); @@ -347,6 +420,8 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port, if (unlikely(!p)) return -ENOMEM; rcu_assign_pointer(*pp, p); + if (state == MDB_TEMPORARY) + mod_timer(&p->timer, now + br->multicast_membership_interval); return 0; } @@ -371,6 +446,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br, return -EINVAL; memset(&ip, 0, sizeof(ip)); + ip.vid = entry->vid; ip.proto = entry->addr.proto; if (ip.proto == htons(ETH_P_IP)) ip.u.ip4 = entry->addr.u.ip4; @@ -388,8 +464,11 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br, static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); + struct net_bridge_vlan_group *vg; + struct net_device *dev, *pdev; struct br_mdb_entry *entry; - struct net_device *dev; + struct net_bridge_port *p; + struct net_bridge_vlan *v; struct net_bridge *br; int err; @@ -399,9 +478,32 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) br = netdev_priv(dev); - err = __br_mdb_add(net, br, entry); - if (!err) - __br_mdb_notify(dev, entry, RTM_NEWMDB); + /* If vlan filtering is enabled and VLAN is not specified + * install mdb entry on all vlans configured on the port. + */ + pdev = __dev_get_by_index(net, entry->ifindex); + if (!pdev) + return -ENODEV; + + p = br_port_get_rtnl(pdev); + if (!p || p->br != br || p->state == BR_STATE_DISABLED) + return -EINVAL; + + vg = nbp_vlan_group(p); + if (br_vlan_enabled(br) && vg && entry->vid == 0) { + list_for_each_entry(v, &vg->vlan_list, vlist) { + entry->vid = v->vid; + err = __br_mdb_add(net, br, entry); + if (err) + break; + __br_mdb_notify(dev, entry, RTM_NEWMDB); + } + } else { + err = __br_mdb_add(net, br, entry); + if (!err) + __br_mdb_notify(dev, entry, RTM_NEWMDB); + } + return err; } @@ -418,20 +520,14 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry) return -EINVAL; memset(&ip, 0, sizeof(ip)); + ip.vid = entry->vid; ip.proto = entry->addr.proto; - if (ip.proto == htons(ETH_P_IP)) { - if (timer_pending(&br->ip4_other_query.timer)) - return -EBUSY; - + if (ip.proto == htons(ETH_P_IP)) ip.u.ip4 = entry->addr.u.ip4; #if IS_ENABLED(CONFIG_IPV6) - } else { - if (timer_pending(&br->ip6_other_query.timer)) - return -EBUSY; - + else ip.u.ip6 = entry->addr.u.ip6; #endif - } spin_lock_bh(&br->multicast_lock); mdb = mlock_dereference(br->mdb, br); @@ -449,6 +545,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry) if (p->port->state == BR_STATE_DISABLED) goto unlock; + entry->state = p->state; rcu_assign_pointer(*pp, p->next); hlist_del_init(&p->mglist); del_timer(&p->timer); @@ -468,8 +565,12 @@ unlock: static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) { - struct net_device *dev; + struct net *net = sock_net(skb->sk); + struct net_bridge_vlan_group *vg; + struct net_device *dev, *pdev; struct br_mdb_entry *entry; + struct net_bridge_port *p; + struct net_bridge_vlan *v; struct net_bridge *br; int err; @@ -479,9 +580,31 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) br = netdev_priv(dev); - err = __br_mdb_del(br, entry); - if (!err) - __br_mdb_notify(dev, entry, RTM_DELMDB); + /* If vlan filtering is enabled and VLAN is not specified + * delete mdb entry on all vlans configured on the port. + */ + pdev = __dev_get_by_index(net, entry->ifindex); + if (!pdev) + return -ENODEV; + + p = br_port_get_rtnl(pdev); + if (!p || p->br != br || p->state == BR_STATE_DISABLED) + return -EINVAL; + + vg = nbp_vlan_group(p); + if (br_vlan_enabled(br) && vg && entry->vid == 0) { + list_for_each_entry(v, &vg->vlan_list, vlist) { + entry->vid = v->vid; + err = __br_mdb_del(br, entry); + if (!err) + __br_mdb_notify(dev, entry, RTM_DELMDB); + } + } else { + err = __br_mdb_del(br, entry); + if (!err) + __br_mdb_notify(dev, entry, RTM_DELMDB); + } + return err; } |