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-rw-r--r--net/bridge/br_device.c4
-rw-r--r--net/bridge/br_forward.c28
-rw-r--r--net/bridge/br_if.c1
-rw-r--r--net/bridge/br_mdb.c162
-rw-r--r--net/bridge/br_multicast.c137
-rw-r--r--net/bridge/br_netfilter_hooks.c36
-rw-r--r--net/bridge/br_netfilter_ipv6.c4
-rw-r--r--net/bridge/br_netlink.c69
-rw-r--r--net/bridge/br_private.h21
-rw-r--r--net/bridge/br_stp.c5
-rw-r--r--net/bridge/br_stp_if.c13
-rw-r--r--net/bridge/br_stp_timer.c4
-rw-r--r--net/bridge/br_vlan.c70
-rw-r--r--net/bridge/netfilter/ebtables.c2
14 files changed, 428 insertions, 128 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 4ff77a16956c..6ed2feb51e3c 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -339,6 +339,7 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_bridge_getlink = br_getlink,
.ndo_bridge_setlink = br_setlink,
.ndo_bridge_dellink = br_dellink,
+ .ndo_features_check = passthru_features_check,
};
static void br_dev_free(struct net_device *dev)
@@ -364,8 +365,7 @@ void br_dev_setup(struct net_device *dev)
dev->destructor = br_dev_free;
dev->ethtool_ops = &br_ethtool_ops;
SET_NETDEV_DEVTYPE(dev, &br_type);
- dev->tx_queue_len = 0;
- dev->priv_flags = IFF_EBRIDGE;
+ dev->priv_flags = IFF_EBRIDGE | IFF_NO_QUEUE;
dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index e97572b5d2cc..fa7bfced888e 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -37,14 +37,30 @@ static inline int should_deliver(const struct net_bridge_port *p,
int br_dev_queue_push_xmit(struct sock *sk, struct sk_buff *skb)
{
- if (!is_skb_forwardable(skb->dev, skb)) {
- kfree_skb(skb);
- } else {
- skb_push(skb, ETH_HLEN);
- br_drop_fake_rtable(skb);
- dev_queue_xmit(skb);
+ if (!is_skb_forwardable(skb->dev, skb))
+ goto drop;
+
+ skb_push(skb, ETH_HLEN);
+ br_drop_fake_rtable(skb);
+ skb_sender_cpu_clear(skb);
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL &&
+ (skb->protocol == htons(ETH_P_8021Q) ||
+ skb->protocol == htons(ETH_P_8021AD))) {
+ int depth;
+
+ if (!__vlan_get_protocol(skb, skb->protocol, &depth))
+ goto drop;
+
+ skb_set_network_header(skb, depth);
}
+ dev_queue_xmit(skb);
+
+ return 0;
+
+drop:
+ kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(br_dev_queue_push_xmit);
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index a538cb1199a3..45e4757c6fd2 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -281,6 +281,7 @@ void br_dev_delete(struct net_device *dev, struct list_head *head)
br_fdb_delete_by_port(br, NULL, 0, 1);
br_vlan_flush(br);
+ br_multicast_dev_del(br);
del_timer_sync(&br->gc_timer);
br_sysfs_delbr(br->dev);
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index e29ad70b3000..d747275fad18 100644
--- a/net/bridge/br_mdb.c
+++ b/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);
@@ -347,8 +420,9 @@ 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);
- br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
return 0;
}
@@ -371,6 +445,8 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
if (!p || p->br != br || p->state == BR_STATE_DISABLED)
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);
+ unsigned short vid = VLAN_N_VID;
+ struct net_device *dev, *pdev;
struct br_mdb_entry *entry;
- struct net_device *dev;
+ struct net_bridge_port *p;
+ struct net_port_vlans *pv;
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;
+
+ pv = nbp_get_vlan_info(p);
+ if (br_vlan_enabled(br) && pv && entry->vid == 0) {
+ for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
+ entry->vid = 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;
}
@@ -417,20 +519,15 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
if (!netif_running(br->dev) || br->multicast_disabled)
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);
@@ -448,6 +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);
@@ -467,8 +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);
+ unsigned short vid = VLAN_N_VID;
+ struct net_device *dev, *pdev;
struct br_mdb_entry *entry;
+ struct net_bridge_port *p;
+ struct net_port_vlans *pv;
struct net_bridge *br;
int err;
@@ -478,9 +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;
+
+ pv = nbp_get_vlan_info(p);
+ if (br_vlan_enabled(br) && pv && entry->vid == 0) {
+ for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
+ entry->vid = 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;
}
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 742a6c27d7a2..480b3de1a0e3 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -39,6 +39,16 @@ static void br_multicast_start_querier(struct net_bridge *br,
struct bridge_mcast_own_query *query);
static void br_multicast_add_router(struct net_bridge *br,
struct net_bridge_port *port);
+static void br_ip4_multicast_leave_group(struct net_bridge *br,
+ struct net_bridge_port *port,
+ __be32 group,
+ __u16 vid);
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_leave_group(struct net_bridge *br,
+ struct net_bridge_port *port,
+ const struct in6_addr *group,
+ __u16 vid);
+#endif
unsigned int br_mdb_rehash_seq;
static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b)
@@ -273,6 +283,8 @@ static void br_multicast_del_pg(struct net_bridge *br,
rcu_assign_pointer(*pp, p->next);
hlist_del_init(&p->mglist);
del_timer(&p->timer);
+ br_mdb_notify(br->dev, p->port, &pg->addr, RTM_DELMDB,
+ p->state);
call_rcu_bh(&p->rcu, br_multicast_free_pg);
if (!mp->ports && !mp->mglist &&
@@ -694,7 +706,7 @@ static int br_multicast_add_group(struct net_bridge *br,
if (unlikely(!p))
goto err;
rcu_assign_pointer(*pp, p);
- br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
+ br_mdb_notify(br->dev, port, group, RTM_NEWMDB, MDB_TEMPORARY);
found:
mod_timer(&p->timer, now + br->multicast_membership_interval);
@@ -754,6 +766,7 @@ static void br_multicast_router_expired(unsigned long data)
goto out;
hlist_del_init_rcu(&port->rlist);
+ br_rtr_notify(br->dev, port, RTM_DELMDB);
out:
spin_unlock(&br->multicast_lock);
@@ -914,6 +927,15 @@ void br_multicast_add_port(struct net_bridge_port *port)
void br_multicast_del_port(struct net_bridge_port *port)
{
+ struct net_bridge *br = port->br;
+ struct net_bridge_port_group *pg;
+ struct hlist_node *n;
+
+ /* Take care of the remaining groups, only perm ones should be left */
+ spin_lock_bh(&br->multicast_lock);
+ hlist_for_each_entry_safe(pg, n, &port->mglist, mglist)
+ br_multicast_del_pg(br, pg);
+ spin_unlock_bh(&br->multicast_lock);
del_timer_sync(&port->multicast_router_timer);
}
@@ -953,10 +975,13 @@ void br_multicast_disable_port(struct net_bridge_port *port)
spin_lock(&br->multicast_lock);
hlist_for_each_entry_safe(pg, n, &port->mglist, mglist)
- br_multicast_del_pg(br, pg);
+ if (pg->state == MDB_TEMPORARY)
+ br_multicast_del_pg(br, pg);
- if (!hlist_unhashed(&port->rlist))
+ if (!hlist_unhashed(&port->rlist)) {
hlist_del_init_rcu(&port->rlist);
+ br_rtr_notify(br->dev, port, RTM_DELMDB);
+ }
del_timer(&port->multicast_router_timer);
del_timer(&port->ip4_own_query.timer);
#if IS_ENABLED(CONFIG_IPV6)
@@ -981,7 +1006,7 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br,
ih = igmpv3_report_hdr(skb);
num = ntohs(ih->ngrec);
- len = sizeof(*ih);
+ len = skb_transport_offset(skb) + sizeof(*ih);
for (i = 0; i < num; i++) {
len += sizeof(*grec);
@@ -1010,9 +1035,15 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br,
continue;
}
- err = br_ip4_multicast_add_group(br, port, group, vid);
- if (err)
- break;
+ if ((type == IGMPV3_CHANGE_TO_INCLUDE ||
+ type == IGMPV3_MODE_IS_INCLUDE) &&
+ ntohs(grec->grec_nsrcs) == 0) {
+ br_ip4_multicast_leave_group(br, port, group, vid);
+ } else {
+ err = br_ip4_multicast_add_group(br, port, group, vid);
+ if (err)
+ break;
+ }
}
return err;
@@ -1036,7 +1067,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
icmp6h = icmp6_hdr(skb);
num = ntohs(icmp6h->icmp6_dataun.un_data16[1]);
- len = sizeof(*icmp6h);
+ len = skb_transport_offset(skb) + sizeof(*icmp6h);
for (i = 0; i < num; i++) {
__be16 *nsrcs, _nsrcs;
@@ -1071,10 +1102,17 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
continue;
}
- err = br_ip6_multicast_add_group(br, port, &grec->grec_mca,
- vid);
- if (err)
- break;
+ if ((grec->grec_type == MLD2_CHANGE_TO_INCLUDE ||
+ grec->grec_type == MLD2_MODE_IS_INCLUDE) &&
+ ntohs(*nsrcs) == 0) {
+ br_ip6_multicast_leave_group(br, port, &grec->grec_mca,
+ vid);
+ } else {
+ err = br_ip6_multicast_add_group(br, port,
+ &grec->grec_mca, vid);
+ if (!err)
+ break;
+ }
}
return err;
@@ -1181,6 +1219,7 @@ static void br_multicast_add_router(struct net_bridge *br,
hlist_add_behind_rcu(&port->rlist, slot);
else
hlist_add_head_rcu(&port->rlist, &br->router_list);
+ br_rtr_notify(br->dev, port, RTM_NEWMDB);
}
static void br_multicast_mark_router(struct net_bridge *br,
@@ -1393,8 +1432,7 @@ br_multicast_leave_group(struct net_bridge *br,
spin_lock(&br->multicast_lock);
if (!netif_running(br->dev) ||
- (port && port->state == BR_STATE_DISABLED) ||
- timer_pending(&other_query->timer))
+ (port && port->state == BR_STATE_DISABLED))
goto out;
mdb = mlock_dereference(br->mdb, br);
@@ -1402,6 +1440,32 @@ br_multicast_leave_group(struct net_bridge *br,
if (!mp)
goto out;
+ if (port && (port->flags & BR_MULTICAST_FAST_LEAVE)) {
+ struct net_bridge_port_group __rcu **pp;
+
+ for (pp = &mp->ports;
+ (p = mlock_dereference(*pp, br)) != NULL;
+ pp = &p->next) {
+ if (p->port != port)
+ continue;
+
+ rcu_assign_pointer(*pp, p->next);
+ hlist_del_init(&p->mglist);
+ del_timer(&p->timer);
+ call_rcu_bh(&p->rcu, br_multicast_free_pg);
+ br_mdb_notify(br->dev, port, group, RTM_DELMDB,
+ p->state);
+
+ if (!mp->ports && !mp->mglist &&
+ netif_running(br->dev))
+ mod_timer(&mp->timer, jiffies);
+ }
+ goto out;
+ }
+
+ if (timer_pending(&other_query->timer))
+ goto out;
+
if (br->multicast_querier) {
__br_multicast_send_query(br, port, &mp->addr);
@@ -1427,28 +1491,6 @@ br_multicast_leave_group(struct net_bridge *br,
}
}
- if (port && (port->flags & BR_MULTICAST_FAST_LEAVE)) {
- struct net_bridge_port_group __rcu **pp;
-
- for (pp = &mp->ports;
- (p = mlock_dereference(*pp, br)) != NULL;
- pp = &p->next) {
- if (p->port != port)
- continue;
-
- rcu_assign_pointer(*pp, p->next);
- hlist_del_init(&p->mglist);
- del_timer(&p->timer);
- call_rcu_bh(&p->rcu, br_multicast_free_pg);
- br_mdb_notify(br->dev, port, group, RTM_DELMDB);
-
- if (!mp->ports && !mp->mglist &&
- netif_running(br->dev))
- mod_timer(&mp->timer, jiffies);
- }
- goto out;
- }
-
now = jiffies;
time = now + br->multicast_last_member_count *
br->multicast_last_member_interval;
@@ -1566,7 +1608,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
break;
}
- if (skb_trimmed)
+ if (skb_trimmed && skb_trimmed != skb)
kfree_skb(skb_trimmed);
return err;
@@ -1611,7 +1653,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
break;
}
- if (skb_trimmed)
+ if (skb_trimmed && skb_trimmed != skb)
kfree_skb(skb_trimmed);
return err;
@@ -1729,12 +1771,6 @@ void br_multicast_open(struct net_bridge *br)
void br_multicast_stop(struct net_bridge *br)
{
- struct net_bridge_mdb_htable *mdb;
- struct net_bridge_mdb_entry *mp;
- struct hlist_node *n;
- u32 ver;
- int i;
-
del_timer_sync(&br->multicast_router_timer);
del_timer_sync(&br->ip4_other_query.timer);
del_timer_sync(&br->ip4_own_query.timer);
@@ -1742,6 +1778,15 @@ void br_multicast_stop(struct net_bridge *br)
del_timer_sync(&br->ip6_other_query.timer);
del_timer_sync(&br->ip6_own_query.timer);
#endif
+}
+
+void br_multicast_dev_del(struct net_bridge *br)
+{
+ struct net_bridge_mdb_htable *mdb;
+ struct net_bridge_mdb_entry *mp;
+ struct hlist_node *n;
+ u32 ver;
+ int i;
spin_lock_bh(&br->multicast_lock);
mdb = mlock_dereference(br->mdb, br);
@@ -1809,8 +1854,10 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
p->multicast_router = val;
err = 0;
- if (val < 2 && !hlist_unhashed(&p->rlist))
+ if (val < 2 && !hlist_unhashed(&p->rlist)) {
hlist_del_init_rcu(&p->rlist);
+ br_rtr_notify(br->dev, p, RTM_DELMDB);
+ }
if (val == 1)
break;
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index d89f4fac0bc5..0a6f095bb0c9 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -49,9 +49,9 @@ static struct ctl_table_header *brnf_sysctl_header;
static int brnf_call_iptables __read_mostly = 1;
static int brnf_call_ip6tables __read_mostly = 1;
static int brnf_call_arptables __read_mostly = 1;
-static int brnf_filter_vlan_tagged __read_mostly = 0;
-static int brnf_filter_pppoe_tagged __read_mostly = 0;
-static int brnf_pass_vlan_indev __read_mostly = 0;
+static int brnf_filter_vlan_tagged __read_mostly;
+static int brnf_filter_pppoe_tagged __read_mostly;
+static int brnf_pass_vlan_indev __read_mostly;
#else
#define brnf_call_iptables 1
#define brnf_call_ip6tables 1
@@ -111,7 +111,7 @@ static inline __be16 pppoe_proto(const struct sk_buff *skb)
/* largest possible L2 header, see br_nf_dev_queue_xmit() */
#define NF_BRIDGE_MAX_MAC_HEADER_LENGTH (PPPOE_SES_HLEN + ETH_HLEN)
-#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4) || IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
struct brnf_frag_data {
char mac[NF_BRIDGE_MAX_MAC_HEADER_LENGTH];
u8 encap_size;
@@ -284,7 +284,7 @@ int br_nf_pre_routing_finish_bridge(struct sock *sk, struct sk_buff *skb)
nf_bridge->neigh_header,
ETH_HLEN-ETH_ALEN);
/* tell br_dev_xmit to continue with forwarding */
- nf_bridge->mask |= BRNF_BRIDGED_DNAT;
+ nf_bridge->bridged_dnat = 1;
/* FIXME Need to refragment */
ret = neigh->output(neigh, skb);
}
@@ -356,7 +356,7 @@ static int br_nf_pre_routing_finish(struct sock *sk, struct sk_buff *skb)
skb->pkt_type = PACKET_OTHERHOST;
nf_bridge->pkt_otherhost = false;
}
- nf_bridge->mask &= ~BRNF_NF_BRIDGE_PREROUTING;
+ nf_bridge->in_prerouting = 0;
if (br_nf_ipv4_daddr_was_changed(skb, nf_bridge)) {
if ((err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))) {
struct in_device *in_dev = __in_dev_get_rcu(dev);
@@ -444,7 +444,7 @@ struct net_device *setup_pre_routing(struct sk_buff *skb)
nf_bridge->pkt_otherhost = true;
}
- nf_bridge->mask |= BRNF_NF_BRIDGE_PREROUTING;
+ nf_bridge->in_prerouting = 1;
nf_bridge->physindev = skb->dev;
skb->dev = brnf_get_logical_dev(skb, skb->dev);
@@ -694,6 +694,7 @@ static int br_nf_push_frag_xmit(struct sock *sk, struct sk_buff *skb)
}
#endif
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
static int br_nf_ip_fragment(struct sock *sk, struct sk_buff *skb,
int (*output)(struct sock *, struct sk_buff *))
{
@@ -712,6 +713,7 @@ static int br_nf_ip_fragment(struct sock *sk, struct sk_buff *skb,
return ip_do_fragment(sk, skb, output);
}
+#endif
static unsigned int nf_bridge_mtu_reduction(const struct sk_buff *skb)
{
@@ -742,7 +744,7 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
struct brnf_frag_data *data;
if (br_validate_ipv4(skb))
- return NF_DROP;
+ goto drop;
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
@@ -767,7 +769,7 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
struct brnf_frag_data *data;
if (br_validate_ipv6(skb))
- return NF_DROP;
+ goto drop;
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
@@ -782,12 +784,16 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
if (v6ops)
return v6ops->fragment(sk, skb, br_nf_push_frag_xmit);
- else
- return -EMSGSIZE;
+
+ kfree_skb(skb);
+ return -EMSGSIZE;
}
#endif
nf_bridge_info_free(skb);
return br_dev_queue_push_xmit(sk, skb);
+ drop:
+ kfree_skb(skb);
+ return 0;
}
/* PF_BRIDGE/POST_ROUTING ********************************************/
@@ -844,10 +850,8 @@ static unsigned int ip_sabotage_in(const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
- if (skb->nf_bridge &&
- !(skb->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
+ if (skb->nf_bridge && !skb->nf_bridge->in_prerouting)
return NF_STOP;
- }
return NF_ACCEPT;
}
@@ -866,7 +870,7 @@ static void br_nf_pre_routing_finish_bridge_slow(struct sk_buff *skb)
struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
skb_pull(skb, ETH_HLEN);
- nf_bridge->mask &= ~BRNF_BRIDGED_DNAT;
+ nf_bridge->bridged_dnat = 0;
BUILD_BUG_ON(sizeof(nf_bridge->neigh_header) != (ETH_HLEN - ETH_ALEN));
@@ -881,7 +885,7 @@ static void br_nf_pre_routing_finish_bridge_slow(struct sk_buff *skb)
static int br_nf_dev_xmit(struct sk_buff *skb)
{
- if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
+ if (skb->nf_bridge && skb->nf_bridge->bridged_dnat) {
br_nf_pre_routing_finish_bridge_slow(skb);
return 1;
}
diff --git a/net/bridge/br_netfilter_ipv6.c b/net/bridge/br_netfilter_ipv6.c
index 6d12d2675c80..77383bfe7ea3 100644
--- a/net/bridge/br_netfilter_ipv6.c
+++ b/net/bridge/br_netfilter_ipv6.c
@@ -104,7 +104,7 @@ int br_validate_ipv6(struct sk_buff *skb)
{
const struct ipv6hdr *hdr;
struct net_device *dev = skb->dev;
- struct inet6_dev *idev = in6_dev_get(skb->dev);
+ struct inet6_dev *idev = __in6_dev_get(skb->dev);
u32 pkt_len;
u8 ip6h_len = sizeof(struct ipv6hdr);
@@ -174,7 +174,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sock *sk, struct sk_buff *skb)
skb->pkt_type = PACKET_OTHERHOST;
nf_bridge->pkt_otherhost = false;
}
- nf_bridge->mask &= ~BRNF_NF_BRIDGE_PREROUTING;
+ nf_bridge->in_prerouting = 0;
if (br_nf_ipv6_daddr_was_changed(skb, nf_bridge)) {
skb_dst_drop(skb);
v6ops->route_input(skb);
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 6b67ed3831de..ea748c93a07f 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -16,7 +16,6 @@
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/sock.h>
-#include <net/switchdev.h>
#include <uapi/linux/if_bridge.h>
#include "br_private.h"
@@ -112,6 +111,8 @@ static inline size_t br_port_info_size(void)
+ 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 */
+ 0;
}
@@ -164,8 +165,6 @@ static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
sizeof(vinfo), &vinfo))
goto nla_put_failure;
- vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
-
vinfo.vid = vid_end;
vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
@@ -457,6 +456,8 @@ static int br_afspec(struct net_bridge *br,
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;
@@ -504,6 +505,8 @@ static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
[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 },
};
/* Change the state of the port and notify spanning tree */
@@ -669,6 +672,21 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[])
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;
+ }
+ }
+#endif
+
return 0;
}
@@ -691,9 +709,17 @@ static int br_port_slave_changelink(struct net_device *brdev,
struct nlattr *tb[],
struct nlattr *data[])
{
+ struct net_bridge *br = netdev_priv(brdev);
+ int ret;
+
if (!data)
return 0;
- return br_setport(br_port_get_rtnl(dev), data);
+
+ 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,
@@ -716,6 +742,8 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
[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 },
};
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -763,6 +791,24 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
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;
+ }
+#endif
+
return 0;
}
@@ -774,6 +820,10 @@ static size_t br_get_size(const struct net_device *brdev)
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 */
+#endif
0;
}
@@ -786,14 +836,21 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
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);
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_u16(skb, IFLA_BR_PRIORITY, priority) ||
+ nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled))
+ return -EMSGSIZE;
+
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+ if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto))
return -EMSGSIZE;
+#endif
return 0;
}
@@ -825,7 +882,7 @@ struct rtnl_link_ops br_link_ops __read_mostly = {
.kind = "bridge",
.priv_size = sizeof(struct net_bridge),
.setup = br_dev_setup,
- .maxtype = IFLA_BRPORT_MAX,
+ .maxtype = IFLA_BR_MAX,
.policy = br_policy,
.validate = br_validate,
.newlink = br_dev_newlink,
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 8b21146b24a0..213baf7aaa93 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -95,15 +95,15 @@ struct net_bridge_fdb_entry
struct hlist_node hlist;
struct net_bridge_port *dst;
- struct rcu_head rcu;
unsigned long updated;
unsigned long used;
mac_addr addr;
+ __u16 vlan_id;
unsigned char is_local:1,
is_static:1,
added_by_user:1,
added_by_external_learn:1;
- __u16 vlan_id;
+ struct rcu_head rcu;
};
struct net_bridge_port_group {
@@ -466,6 +466,7 @@ void br_multicast_disable_port(struct net_bridge_port *port);
void br_multicast_init(struct net_bridge *br);
void br_multicast_open(struct net_bridge *br);
void br_multicast_stop(struct net_bridge *br);
+void br_multicast_dev_del(struct net_bridge *br);
void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
struct sk_buff *skb);
void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
@@ -488,7 +489,9 @@ br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
void br_mdb_init(void);
void br_mdb_uninit(void);
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);
+void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
+ int type);
#define mlock_dereference(X, br) \
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
@@ -565,6 +568,10 @@ static inline void br_multicast_stop(struct net_bridge *br)
{
}
+static inline void br_multicast_dev_del(struct net_bridge *br)
+{
+}
+
static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
struct sk_buff *skb)
{
@@ -607,7 +614,9 @@ int br_vlan_delete(struct net_bridge *br, u16 vid);
void br_vlan_flush(struct net_bridge *br);
bool br_vlan_find(struct net_bridge *br, u16 vid);
void br_recalculate_fwd_mask(struct net_bridge *br);
+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 __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
int br_vlan_init(struct net_bridge *br);
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
@@ -764,6 +773,12 @@ static inline int br_vlan_enabled(struct net_bridge *br)
{
return 0;
}
+
+static inline int __br_vlan_filter_toggle(struct net_bridge *br,
+ unsigned long val)
+{
+ return -EOPNOTSUPP;
+}
#endif
struct nf_br_ops {
diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index b4b6dab9c285..ed74ffaa851f 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -209,8 +209,9 @@ void br_transmit_config(struct net_bridge_port *p)
br_send_config_bpdu(p, &bpdu);
p->topology_change_ack = 0;
p->config_pending = 0;
- mod_timer(&p->hold_timer,
- round_jiffies(jiffies + BR_HOLD_TIME));
+ if (p->br->stp_enabled == BR_KERNEL_STP)
+ mod_timer(&p->hold_timer,
+ round_jiffies(jiffies + BR_HOLD_TIME));
}
}
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index a2730e7196cd..4ca449a16132 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -48,7 +48,8 @@ void br_stp_enable_bridge(struct net_bridge *br)
struct net_bridge_port *p;
spin_lock_bh(&br->lock);
- mod_timer(&br->hello_timer, jiffies + br->hello_time);
+ if (br->stp_enabled == BR_KERNEL_STP)
+ mod_timer(&br->hello_timer, jiffies + br->hello_time);
mod_timer(&br->gc_timer, jiffies + HZ/10);
br_config_bpdu_generation(br);
@@ -127,6 +128,7 @@ static void br_stp_start(struct net_bridge *br)
int r;
char *argv[] = { BR_STP_PROG, br->dev->name, "start", NULL };
char *envp[] = { NULL };
+ struct net_bridge_port *p;
r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
@@ -140,6 +142,10 @@ static void br_stp_start(struct net_bridge *br)
if (r == 0) {
br->stp_enabled = BR_USER_STP;
br_debug(br, "userspace STP started\n");
+ /* Stop hello and hold timers */
+ del_timer(&br->hello_timer);
+ list_for_each_entry(p, &br->port_list, list)
+ del_timer(&p->hold_timer);
} else {
br->stp_enabled = BR_KERNEL_STP;
br_debug(br, "using kernel STP\n");
@@ -156,12 +162,17 @@ static void br_stp_stop(struct net_bridge *br)
int r;
char *argv[] = { BR_STP_PROG, br->dev->name, "stop", NULL };
char *envp[] = { NULL };
+ struct net_bridge_port *p;
if (br->stp_enabled == BR_USER_STP) {
r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
br_info(br, "userspace STP stopped, return code %d\n", r);
/* To start timers on any ports left in blocking */
+ mod_timer(&br->hello_timer, jiffies + br->hello_time);
+ list_for_each_entry(p, &br->port_list, list)
+ mod_timer(&p->hold_timer,
+ round_jiffies(jiffies + BR_HOLD_TIME));
spin_lock_bh(&br->lock);
br_port_state_selection(br);
spin_unlock_bh(&br->lock);
diff --git a/net/bridge/br_stp_timer.c b/net/bridge/br_stp_timer.c
index 7caf7fae2d5b..5f0f5af0ec35 100644
--- a/net/bridge/br_stp_timer.c
+++ b/net/bridge/br_stp_timer.c
@@ -40,7 +40,9 @@ static void br_hello_timer_expired(unsigned long arg)
if (br->dev->flags & IFF_UP) {
br_config_bpdu_generation(br);
- mod_timer(&br->hello_timer, round_jiffies(jiffies + br->hello_time));
+ if (br->stp_enabled != BR_USER_STP)
+ mod_timer(&br->hello_timer,
+ round_jiffies(jiffies + br->hello_time));
}
spin_unlock(&br->lock);
}
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 0d41f81838ff..5f5a02b49a99 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -117,10 +117,11 @@ out_filt:
return err;
}
-static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
- u16 vid)
+static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
+ u16 vid)
{
const struct net_device_ops *ops = dev->netdev_ops;
+ int err = 0;
/* If driver uses VLAN ndo ops, use 8021q to delete vid
* on device, otherwise try switchdev ops to delete vid.
@@ -137,8 +138,12 @@ static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
},
};
- switchdev_port_obj_del(dev, &vlan_obj);
+ err = switchdev_port_obj_del(dev, &vlan_obj);
+ if (err == -EOPNOTSUPP)
+ err = 0;
}
+
+ return err;
}
static int __vlan_del(struct net_port_vlans *v, u16 vid)
@@ -151,7 +156,11 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
if (v->port_idx) {
struct net_bridge_port *p = v->parent.port;
- __vlan_vid_del(p->dev, p->br, vid);
+ int err;
+
+ err = __vlan_vid_del(p->dev, p->br, vid);
+ if (err)
+ return err;
}
clear_bit(vid, v->vlan_bitmap);
@@ -468,41 +477,40 @@ void br_recalculate_fwd_mask(struct net_bridge *br)
~(1u << br->group_addr[5]);
}
-int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
+int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
{
- if (!rtnl_trylock())
- return restart_syscall();
-
if (br->vlan_enabled == val)
- goto unlock;
+ return 0;
br->vlan_enabled = val;
br_manage_promisc(br);
recalculate_group_addr(br);
br_recalculate_fwd_mask(br);
-unlock:
+ return 0;
+}
+
+int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
+{
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ __br_vlan_filter_toggle(br, val);
rtnl_unlock();
+
return 0;
}
-int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
+int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
{
int err = 0;
struct net_bridge_port *p;
struct net_port_vlans *pv;
- __be16 proto, oldproto;
+ __be16 oldproto;
u16 vid, errvid;
- if (val != ETH_P_8021Q && val != ETH_P_8021AD)
- return -EPROTONOSUPPORT;
-
- if (!rtnl_trylock())
- return restart_syscall();
-
- proto = htons(val);
if (br->vlan_proto == proto)
- goto unlock;
+ return 0;
/* Add VLANs for the new proto to the device filter. */
list_for_each_entry(p, &br->port_list, list) {
@@ -533,9 +541,7 @@ int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
vlan_vid_del(p->dev, oldproto, vid);
}
-unlock:
- rtnl_unlock();
- return err;
+ return 0;
err_filt:
errvid = vid;
@@ -551,7 +557,23 @@ err_filt:
vlan_vid_del(p->dev, proto, vid);
}
- goto unlock;
+ return err;
+}
+
+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;
}
static bool vlan_default_pvid(struct net_port_vlans *pv, u16 vid)
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 18ca4b24c418..48b6b01295de 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -176,7 +176,7 @@ ebt_basic_match(const struct ebt_entry *e, const struct sk_buff *skb,
return 0;
}
-static inline __pure
+static inline
struct ebt_entry *ebt_next_entry(const struct ebt_entry *entry)
{
return (void *)entry + entry->next_offset;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.