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-rw-r--r--net/bridge/Kconfig14
-rw-r--r--net/bridge/Makefile2
-rw-r--r--net/bridge/br_device.c19
-rw-r--r--net/bridge/br_fdb.c258
-rw-r--r--net/bridge/br_forward.c9
-rw-r--r--net/bridge/br_if.c16
-rw-r--r--net/bridge/br_input.c28
-rw-r--r--net/bridge/br_mdb.c3
-rw-r--r--net/bridge/br_multicast.c69
-rw-r--r--net/bridge/br_netlink.c247
-rw-r--r--net/bridge/br_notify.c2
-rw-r--r--net/bridge/br_private.h178
-rw-r--r--net/bridge/br_stp_if.c4
-rw-r--r--net/bridge/br_sysfs_br.c21
-rw-r--r--net/bridge/br_vlan.c415
-rw-r--r--net/bridge/netfilter/ebt_ulog.c6
-rw-r--r--net/bridge/netfilter/ebtables.c24
17 files changed, 1168 insertions, 147 deletions
diff --git a/net/bridge/Kconfig b/net/bridge/Kconfig
index 6dee7bf648a..aa0d3b2f1bb 100644
--- a/net/bridge/Kconfig
+++ b/net/bridge/Kconfig
@@ -46,3 +46,17 @@ config BRIDGE_IGMP_SNOOPING
Say N to exclude this support and reduce the binary size.
If unsure, say Y.
+
+config BRIDGE_VLAN_FILTERING
+ bool "VLAN filtering"
+ depends on BRIDGE
+ depends on VLAN_8021Q
+ default n
+ ---help---
+ If you say Y here, then the Ethernet bridge will be able selectively
+ receive and forward traffic based on VLAN information in the packet
+ any VLAN information configured on the bridge port or bridge device.
+
+ Say N to exclude this support and reduce the binary size.
+
+ If unsure, say Y.
diff --git a/net/bridge/Makefile b/net/bridge/Makefile
index e859098f5ee..e85498b2f16 100644
--- a/net/bridge/Makefile
+++ b/net/bridge/Makefile
@@ -14,4 +14,6 @@ bridge-$(CONFIG_BRIDGE_NETFILTER) += br_netfilter.o
bridge-$(CONFIG_BRIDGE_IGMP_SNOOPING) += br_multicast.o br_mdb.o
+bridge-$(CONFIG_BRIDGE_VLAN_FILTERING) += br_vlan.o
+
obj-$(CONFIG_BRIDGE_NF_EBTABLES) += netfilter/
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 7c78e264019..d5f1d3fd4b2 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -30,6 +30,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
struct net_bridge_fdb_entry *dst;
struct net_bridge_mdb_entry *mdst;
struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
+ u16 vid = 0;
rcu_read_lock();
#ifdef CONFIG_BRIDGE_NETFILTER
@@ -45,6 +46,9 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
brstats->tx_bytes += skb->len;
u64_stats_update_end(&brstats->syncp);
+ if (!br_allowed_ingress(br, br_get_vlan_info(br), skb, &vid))
+ goto out;
+
BR_INPUT_SKB_CB(skb)->brdev = dev;
skb_reset_mac_header(skb);
@@ -67,7 +71,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
br_multicast_deliver(mdst, skb);
else
br_flood_deliver(br, skb);
- } else if ((dst = __br_fdb_get(br, dest)) != NULL)
+ } else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
br_deliver(dst->dst, skb);
else
br_flood_deliver(br, skb);
@@ -172,12 +176,10 @@ static int br_set_mac_address(struct net_device *dev, void *p)
spin_lock_bh(&br->lock);
if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
- dev->addr_assign_type &= ~NET_ADDR_RANDOM;
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
br_fdb_change_mac_address(br, addr->sa_data);
br_stp_change_bridge_id(br, addr->sa_data);
}
- br->flags |= BR_SET_MAC_ADDR;
spin_unlock_bh(&br->lock);
return 0;
@@ -185,10 +187,10 @@ static int br_set_mac_address(struct net_device *dev, void *p)
static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
- strcpy(info->driver, "bridge");
- strcpy(info->version, BR_VERSION);
- strcpy(info->fw_version, "N/A");
- strcpy(info->bus_info, "N/A");
+ strlcpy(info->driver, "bridge", sizeof(info->driver));
+ strlcpy(info->version, BR_VERSION, sizeof(info->version));
+ strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
+ strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
}
static netdev_features_t br_fix_features(struct net_device *dev,
@@ -267,7 +269,7 @@ void br_netpoll_disable(struct net_bridge_port *p)
p->np = NULL;
- __netpoll_free_rcu(np);
+ __netpoll_free_async(np);
}
#endif
@@ -315,6 +317,7 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_fdb_dump = br_fdb_dump,
.ndo_bridge_getlink = br_getlink,
.ndo_bridge_setlink = br_setlink,
+ .ndo_bridge_dellink = br_dellink,
};
static void br_dev_free(struct net_device *dev)
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index d9576e6de2b..8117900af4d 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -23,11 +23,12 @@
#include <linux/slab.h>
#include <linux/atomic.h>
#include <asm/unaligned.h>
+#include <linux/if_vlan.h>
#include "br_private.h"
static struct kmem_cache *br_fdb_cache __read_mostly;
static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
- const unsigned char *addr);
+ const unsigned char *addr, u16 vid);
static void fdb_notify(struct net_bridge *br,
const struct net_bridge_fdb_entry *, int);
@@ -67,11 +68,11 @@ static inline int has_expired(const struct net_bridge *br,
time_before_eq(fdb->updated + hold_time(br), jiffies);
}
-static inline int br_mac_hash(const unsigned char *mac)
+static inline int br_mac_hash(const unsigned char *mac, __u16 vid)
{
- /* use 1 byte of OUI cnd 3 bytes of NIC */
+ /* use 1 byte of OUI and 3 bytes of NIC */
u32 key = get_unaligned((u32 *)(mac + 2));
- return jhash_1word(key, fdb_salt) & (BR_HASH_SIZE - 1);
+ return jhash_2words(key, vid, fdb_salt) & (BR_HASH_SIZE - 1);
}
static void fdb_rcu_free(struct rcu_head *head)
@@ -91,6 +92,7 @@ static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
{
struct net_bridge *br = p->br;
+ bool no_vlan = (nbp_get_vlan_info(p) == NULL) ? true : false;
int i;
spin_lock_bh(&br->hash_lock);
@@ -105,10 +107,12 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
if (f->dst == p && f->is_local) {
/* maybe another port has same hw addr? */
struct net_bridge_port *op;
+ u16 vid = f->vlan_id;
list_for_each_entry(op, &br->port_list, list) {
if (op != p &&
ether_addr_equal(op->dev->dev_addr,
- f->addr.addr)) {
+ f->addr.addr) &&
+ nbp_vlan_find(op, vid)) {
f->dst = op;
goto insert;
}
@@ -116,27 +120,55 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
/* delete old one */
fdb_delete(br, f);
- goto insert;
+insert:
+ /* insert new address, may fail if invalid
+ * address or dup.
+ */
+ fdb_insert(br, p, newaddr, vid);
+
+ /* if this port has no vlan information
+ * configured, we can safely be done at
+ * this point.
+ */
+ if (no_vlan)
+ goto done;
}
}
}
- insert:
- /* insert new address, may fail if invalid address or dup. */
- fdb_insert(br, p, newaddr);
+done:
spin_unlock_bh(&br->hash_lock);
}
void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
{
struct net_bridge_fdb_entry *f;
+ struct net_port_vlans *pv;
+ u16 vid = 0;
/* If old entry was unassociated with any port, then delete it. */
- f = __br_fdb_get(br, br->dev->dev_addr);
+ f = __br_fdb_get(br, br->dev->dev_addr, 0);
if (f && f->is_local && !f->dst)
fdb_delete(br, f);
- fdb_insert(br, NULL, newaddr);
+ fdb_insert(br, NULL, newaddr, 0);
+
+ /* Now remove and add entries for every VLAN configured on the
+ * bridge. This function runs under RTNL so the bitmap will not
+ * change from under us.
+ */
+ pv = br_get_vlan_info(br);
+ if (!pv)
+ return;
+
+ for (vid = find_next_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN, vid);
+ vid < BR_VLAN_BITMAP_LEN;
+ vid = find_next_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN, vid+1)) {
+ f = __br_fdb_get(br, br->dev->dev_addr, vid);
+ if (f && f->is_local && !f->dst)
+ fdb_delete(br, f);
+ fdb_insert(br, NULL, newaddr, vid);
+ }
}
void br_fdb_cleanup(unsigned long _data)
@@ -231,13 +263,16 @@ void br_fdb_delete_by_port(struct net_bridge *br,
/* No locking or refcounting, assumes caller has rcu_read_lock */
struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
- const unsigned char *addr)
+ const unsigned char *addr,
+ __u16 vid)
{
struct hlist_node *h;
struct net_bridge_fdb_entry *fdb;
- hlist_for_each_entry_rcu(fdb, h, &br->hash[br_mac_hash(addr)], hlist) {
- if (ether_addr_equal(fdb->addr.addr, addr)) {
+ hlist_for_each_entry_rcu(fdb, h,
+ &br->hash[br_mac_hash(addr, vid)], hlist) {
+ if (ether_addr_equal(fdb->addr.addr, addr) &&
+ fdb->vlan_id == vid) {
if (unlikely(has_expired(br, fdb)))
break;
return fdb;
@@ -261,7 +296,7 @@ int br_fdb_test_addr(struct net_device *dev, unsigned char *addr)
if (!port)
ret = 0;
else {
- fdb = __br_fdb_get(port->br, addr);
+ fdb = __br_fdb_get(port->br, addr, 0);
ret = fdb && fdb->dst && fdb->dst->dev != dev &&
fdb->dst->state == BR_STATE_FORWARDING;
}
@@ -325,26 +360,30 @@ int br_fdb_fillbuf(struct net_bridge *br, void *buf,
}
static struct net_bridge_fdb_entry *fdb_find(struct hlist_head *head,
- const unsigned char *addr)
+ const unsigned char *addr,
+ __u16 vid)
{
struct hlist_node *h;
struct net_bridge_fdb_entry *fdb;
hlist_for_each_entry(fdb, h, head, hlist) {
- if (ether_addr_equal(fdb->addr.addr, addr))
+ if (ether_addr_equal(fdb->addr.addr, addr) &&
+ fdb->vlan_id == vid)
return fdb;
}
return NULL;
}
static struct net_bridge_fdb_entry *fdb_find_rcu(struct hlist_head *head,
- const unsigned char *addr)
+ const unsigned char *addr,
+ __u16 vid)
{
struct hlist_node *h;
struct net_bridge_fdb_entry *fdb;
hlist_for_each_entry_rcu(fdb, h, head, hlist) {
- if (ether_addr_equal(fdb->addr.addr, addr))
+ if (ether_addr_equal(fdb->addr.addr, addr) &&
+ fdb->vlan_id == vid)
return fdb;
}
return NULL;
@@ -352,7 +391,8 @@ static struct net_bridge_fdb_entry *fdb_find_rcu(struct hlist_head *head,
static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head,
struct net_bridge_port *source,
- const unsigned char *addr)
+ const unsigned char *addr,
+ __u16 vid)
{
struct net_bridge_fdb_entry *fdb;
@@ -360,6 +400,7 @@ static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head,
if (fdb) {
memcpy(fdb->addr.addr, addr, ETH_ALEN);
fdb->dst = source;
+ fdb->vlan_id = vid;
fdb->is_local = 0;
fdb->is_static = 0;
fdb->updated = fdb->used = jiffies;
@@ -369,15 +410,15 @@ static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head,
}
static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
- const unsigned char *addr)
+ const unsigned char *addr, u16 vid)
{
- struct hlist_head *head = &br->hash[br_mac_hash(addr)];
+ struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
struct net_bridge_fdb_entry *fdb;
if (!is_valid_ether_addr(addr))
return -EINVAL;
- fdb = fdb_find(head, addr);
+ fdb = fdb_find(head, addr, vid);
if (fdb) {
/* it is okay to have multiple ports with same
* address, just use the first one.
@@ -390,7 +431,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
fdb_delete(br, fdb);
}
- fdb = fdb_create(head, source, addr);
+ fdb = fdb_create(head, source, addr, vid);
if (!fdb)
return -ENOMEM;
@@ -401,20 +442,20 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
/* Add entry for local address of interface */
int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
- const unsigned char *addr)
+ const unsigned char *addr, u16 vid)
{
int ret;
spin_lock_bh(&br->hash_lock);
- ret = fdb_insert(br, source, addr);
+ ret = fdb_insert(br, source, addr, vid);
spin_unlock_bh(&br->hash_lock);
return ret;
}
void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
- const unsigned char *addr)
+ const unsigned char *addr, u16 vid)
{
- struct hlist_head *head = &br->hash[br_mac_hash(addr)];
+ struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
struct net_bridge_fdb_entry *fdb;
/* some users want to always flood. */
@@ -426,7 +467,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
source->state == BR_STATE_FORWARDING))
return;
- fdb = fdb_find_rcu(head, addr);
+ fdb = fdb_find_rcu(head, addr, vid);
if (likely(fdb)) {
/* attempt to update an entry for a local interface */
if (unlikely(fdb->is_local)) {
@@ -441,8 +482,8 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
}
} else {
spin_lock(&br->hash_lock);
- if (likely(!fdb_find(head, addr))) {
- fdb = fdb_create(head, source, addr);
+ if (likely(!fdb_find(head, addr, vid))) {
+ fdb = fdb_create(head, source, addr, vid);
if (fdb)
fdb_notify(br, fdb, RTM_NEWNEIGH);
}
@@ -495,6 +536,10 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
ci.ndm_refcnt = 0;
if (nla_put(skb, NDA_CACHEINFO, sizeof(ci), &ci))
goto nla_put_failure;
+
+ if (nla_put(skb, NDA_VLAN, sizeof(u16), &fdb->vlan_id))
+ goto nla_put_failure;
+
return nlmsg_end(skb, nlh);
nla_put_failure:
@@ -506,6 +551,7 @@ static inline size_t fdb_nlmsg_size(void)
{
return NLMSG_ALIGN(sizeof(struct ndmsg))
+ nla_total_size(ETH_ALEN) /* NDA_LLADDR */
+ + nla_total_size(sizeof(u16)) /* NDA_VLAN */
+ nla_total_size(sizeof(struct nda_cacheinfo));
}
@@ -571,18 +617,18 @@ out:
/* Update (create or replace) forwarding database entry */
static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
- __u16 state, __u16 flags)
+ __u16 state, __u16 flags, __u16 vid)
{
struct net_bridge *br = source->br;
- struct hlist_head *head = &br->hash[br_mac_hash(addr)];
+ struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
struct net_bridge_fdb_entry *fdb;
- fdb = fdb_find(head, addr);
+ fdb = fdb_find(head, addr, vid);
if (fdb == NULL) {
if (!(flags & NLM_F_CREATE))
return -ENOENT;
- fdb = fdb_create(head, source, addr);
+ fdb = fdb_create(head, source, addr, vid);
if (!fdb)
return -ENOMEM;
fdb_notify(br, fdb, RTM_NEWNEIGH);
@@ -607,6 +653,25 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
return 0;
}
+static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge_port *p,
+ const unsigned char *addr, u16 nlh_flags, u16 vid)
+{
+ int err = 0;
+
+ if (ndm->ndm_flags & NTF_USE) {
+ rcu_read_lock();
+ br_fdb_update(p->br, p, addr, vid);
+ rcu_read_unlock();
+ } else {
+ spin_lock_bh(&p->br->hash_lock);
+ err = fdb_add_entry(p, addr, ndm->ndm_state,
+ nlh_flags, vid);
+ spin_unlock_bh(&p->br->hash_lock);
+ }
+
+ return err;
+}
+
/* Add new permanent fdb entry with RTM_NEWNEIGH */
int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
@@ -614,12 +679,29 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
{
struct net_bridge_port *p;
int err = 0;
+ struct net_port_vlans *pv;
+ unsigned short vid = VLAN_N_VID;
if (!(ndm->ndm_state & (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE))) {
pr_info("bridge: RTM_NEWNEIGH with invalid state %#x\n", ndm->ndm_state);
return -EINVAL;
}
+ if (tb[NDA_VLAN]) {
+ if (nla_len(tb[NDA_VLAN]) != sizeof(unsigned short)) {
+ pr_info("bridge: RTM_NEWNEIGH with invalid vlan\n");
+ return -EINVAL;
+ }
+
+ vid = nla_get_u16(tb[NDA_VLAN]);
+
+ if (vid >= VLAN_N_VID) {
+ pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n",
+ vid);
+ return -EINVAL;
+ }
+ }
+
p = br_port_get_rtnl(dev);
if (p == NULL) {
pr_info("bridge: RTM_NEWNEIGH %s not a bridge port\n",
@@ -627,40 +709,90 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
return -EINVAL;
}
- if (ndm->ndm_flags & NTF_USE) {
- rcu_read_lock();
- br_fdb_update(p->br, p, addr);
- rcu_read_unlock();
+ pv = nbp_get_vlan_info(p);
+ if (vid != VLAN_N_VID) {
+ if (!pv || !test_bit(vid, pv->vlan_bitmap)) {
+ pr_info("bridge: RTM_NEWNEIGH with unconfigured "
+ "vlan %d on port %s\n", vid, dev->name);
+ return -EINVAL;
+ }
+
+ /* VID was specified, so use it. */
+ err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
} else {
- spin_lock_bh(&p->br->hash_lock);
- err = fdb_add_entry(p, addr, ndm->ndm_state, nlh_flags);
- spin_unlock_bh(&p->br->hash_lock);
+ if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
+ err = __br_fdb_add(ndm, p, addr, nlh_flags, 0);
+ goto out;
+ }
+
+ /* We have vlans configured on this port and user didn't
+ * specify a VLAN. To be nice, add/update entry for every
+ * vlan on this port.
+ */
+ vid = find_first_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN);
+ while (vid < BR_VLAN_BITMAP_LEN) {
+ err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
+ if (err)
+ goto out;
+ vid = find_next_bit(pv->vlan_bitmap,
+ BR_VLAN_BITMAP_LEN, vid+1);
+ }
}
+out:
return err;
}
-static int fdb_delete_by_addr(struct net_bridge_port *p, const u8 *addr)
+int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr,
+ u16 vlan)
{
- struct net_bridge *br = p->br;
- struct hlist_head *head = &br->hash[br_mac_hash(addr)];
+ struct hlist_head *head = &br->hash[br_mac_hash(addr, vlan)];
struct net_bridge_fdb_entry *fdb;
- fdb = fdb_find(head, addr);
+ fdb = fdb_find(head, addr, vlan);
if (!fdb)
return -ENOENT;
- fdb_delete(p->br, fdb);
+ fdb_delete(br, fdb);
return 0;
}
+static int __br_fdb_delete(struct net_bridge_port *p,
+ const unsigned char *addr, u16 vid)
+{
+ int err;
+
+ spin_lock_bh(&p->br->hash_lock);
+ err = fdb_delete_by_addr(p->br, addr, vid);
+ spin_unlock_bh(&p->br->hash_lock);
+
+ return err;
+}
+
/* Remove neighbor entry with RTM_DELNEIGH */
-int br_fdb_delete(struct ndmsg *ndm, struct net_device *dev,
+int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
const unsigned char *addr)
{
struct net_bridge_port *p;
int err;
+ struct net_port_vlans *pv;
+ unsigned short vid = VLAN_N_VID;
+
+ if (tb[NDA_VLAN]) {
+ if (nla_len(tb[NDA_VLAN]) != sizeof(unsigned short)) {
+ pr_info("bridge: RTM_NEWNEIGH with invalid vlan\n");
+ return -EINVAL;
+ }
+
+ vid = nla_get_u16(tb[NDA_VLAN]);
+ if (vid >= VLAN_N_VID) {
+ pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n",
+ vid);
+ return -EINVAL;
+ }
+ }
p = br_port_get_rtnl(dev);
if (p == NULL) {
pr_info("bridge: RTM_DELNEIGH %s not a bridge port\n",
@@ -668,9 +800,33 @@ int br_fdb_delete(struct ndmsg *ndm, struct net_device *dev,
return -EINVAL;
}
- spin_lock_bh(&p->br->hash_lock);
- err = fdb_delete_by_addr(p, addr);
- spin_unlock_bh(&p->br->hash_lock);
+ pv = nbp_get_vlan_info(p);
+ if (vid != VLAN_N_VID) {
+ if (!pv || !test_bit(vid, pv->vlan_bitmap)) {
+ pr_info("bridge: RTM_DELNEIGH with unconfigured "
+ "vlan %d on port %s\n", vid, dev->name);
+ return -EINVAL;
+ }
+
+ err = __br_fdb_delete(p, addr, vid);
+ } else {
+ if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
+ err = __br_fdb_delete(p, addr, 0);
+ goto out;
+ }
+ /* We have vlans configured on this port and user didn't
+ * specify a VLAN. To be nice, add/update entry for every
+ * vlan on this port.
+ */
+ err = -ENOENT;
+ vid = find_first_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN);
+ while (vid < BR_VLAN_BITMAP_LEN) {
+ err &= __br_fdb_delete(p, addr, vid);
+ vid = find_next_bit(pv->vlan_bitmap,
+ BR_VLAN_BITMAP_LEN, vid+1);
+ }
+ }
+out:
return err;
}
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 02015a505d2..092b20e4ee4 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -31,6 +31,7 @@ static inline int should_deliver(const struct net_bridge_port *p,
const struct sk_buff *skb)
{
return (((p->flags & BR_HAIRPIN_MODE) || skb->dev != p->dev) &&
+ br_allowed_egress(p->br, nbp_get_vlan_info(p), skb) &&
p->state == BR_STATE_FORWARDING);
}
@@ -63,6 +64,10 @@ int br_forward_finish(struct sk_buff *skb)
static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb)
{
+ skb = br_handle_vlan(to->br, nbp_get_vlan_info(to), skb);
+ if (!skb)
+ return;
+
skb->dev = to->dev;
if (unlikely(netpoll_tx_running(to->br->dev))) {
@@ -88,6 +93,10 @@ static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
return;
}
+ skb = br_handle_vlan(to->br, nbp_get_vlan_info(to), skb);
+ if (!skb)
+ return;
+
indev = skb->dev;
skb->dev = to->dev;
skb_forward_csum(skb);
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 37fe693471a..ef1b91431c6 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -23,6 +23,7 @@
#include <linux/if_ether.h>
#include <linux/slab.h>
#include <net/sock.h>
+#include <linux/if_vlan.h>
#include "br_private.h"
@@ -66,14 +67,14 @@ void br_port_carrier_check(struct net_bridge_port *p)
struct net_device *dev = p->dev;
struct net_bridge *br = p->br;
- if (netif_running(dev) && netif_carrier_ok(dev))
+ if (netif_running(dev) && netif_oper_up(dev))
p->path_cost = port_cost(dev);
if (!netif_running(br->dev))
return;
spin_lock_bh(&br->lock);
- if (netif_running(dev) && netif_carrier_ok(dev)) {
+ if (netif_running(dev) && netif_oper_up(dev)) {
if (p->state == BR_STATE_DISABLED)
br_stp_enable_port(p);
} else {
@@ -139,6 +140,7 @@ static void del_nbp(struct net_bridge_port *p)
br_ifinfo_notify(RTM_DELLINK, p);
+ nbp_vlan_flush(p);
br_fdb_delete_by_port(br, p, 1);
list_del_rcu(&p->list);
@@ -148,7 +150,7 @@ static void del_nbp(struct net_bridge_port *p)
netdev_rx_handler_unregister(dev);
synchronize_net();
- netdev_set_master(dev, NULL);
+ netdev_upper_dev_unlink(dev, br->dev);
br_multicast_del_port(p);
@@ -364,7 +366,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
if (br_netpoll_info(br) && ((err = br_netpoll_enable(p, GFP_KERNEL))))
goto err3;
- err = netdev_set_master(dev, br->dev);
+ err = netdev_master_upper_dev_link(dev, br->dev);
if (err)
goto err4;
@@ -383,7 +385,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
spin_lock_bh(&br->lock);
changed_addr = br_stp_recalculate_bridge_id(br);
- if ((dev->flags & IFF_UP) && netif_carrier_ok(dev) &&
+ if (netif_running(dev) && netif_oper_up(dev) &&
(br->dev->flags & IFF_UP))
br_stp_enable_port(p);
spin_unlock_bh(&br->lock);
@@ -395,7 +397,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
dev_set_mtu(br->dev, br_min_mtu(br));
- if (br_fdb_insert(br, p, dev->dev_addr))
+ if (br_fdb_insert(br, p, dev->dev_addr, 0))
netdev_err(dev, "failed insert local address bridge forwarding table\n");
kobject_uevent(&p->kobj, KOBJ_ADD);
@@ -403,7 +405,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
return 0;
err5:
- netdev_set_master(dev, NULL);
+ netdev_upper_dev_unlink(dev, br->dev);
err4:
br_netpoll_disable(p);
err3:
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 4b34207419b..48033015189 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -17,6 +17,7 @@
#include <linux/etherdevice.h>
#include <linux/netfilter_bridge.h>
#include <linux/export.h>
+#include <linux/rculist.h>
#include "br_private.h"
/* Hook for brouter */
@@ -34,6 +35,20 @@ static int br_pass_frame_up(struct sk_buff *skb)
brstats->rx_bytes += skb->len;
u64_stats_update_end(&brstats->syncp);
+ /* Bridge is just like any other port. Make sure the
+ * packet is allowed except in promisc modue when someone
+ * may be running packet capture.
+ */
+ if (!(brdev->flags & IFF_PROMISC) &&
+ !br_allowed_egress(br, br_get_vlan_info(br), skb)) {
+ kfree_skb(skb);
+ return NET_RX_DROP;
+ }
+
+ skb = br_handle_vlan(br, br_get_vlan_info(br), skb);
+ if (!skb)
+ return NET_RX_DROP;
+
indev = skb->dev;
skb->dev = brdev;
@@ -50,13 +65,17 @@ int br_handle_frame_finish(struct sk_buff *skb)
struct net_bridge_fdb_entry *dst;
struct net_bridge_mdb_entry *mdst;
struct sk_buff *skb2;
+ u16 vid = 0;
if (!p || p->state == BR_STATE_DISABLED)
goto drop;
+ if (!br_allowed_ingress(p->br, nbp_get_vlan_info(p), skb, &vid))
+ goto drop;
+
/* insert into forwarding database after filtering to avoid spoofing */
br = p->br;
- br_fdb_update(br, p, eth_hdr(skb)->h_source);
+ br_fdb_update(br, p, eth_hdr(skb)->h_source, vid);
if (!is_broadcast_ether_addr(dest) && is_multicast_ether_addr(dest) &&
br_multicast_rcv(br, p, skb))
@@ -91,7 +110,8 @@ int br_handle_frame_finish(struct sk_buff *skb)
skb2 = skb;
br->dev->stats.multicast++;
- } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
+ } else if ((dst = __br_fdb_get(br, dest, vid)) &&
+ dst->is_local) {
skb2 = skb;
/* Do not forward the packet since it's local. */
skb = NULL;
@@ -119,8 +139,10 @@ drop:
static int br_handle_local_finish(struct sk_buff *skb)
{
struct net_bridge_port *p = br_port_get_rcu(skb->dev);
+ u16 vid = 0;
- br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
+ br_vlan_get_tag(skb, &vid);
+ br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid);
return 0; /* process further */
}
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index acc9f4cc18f..38991e03646 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -272,9 +272,6 @@ static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net_device *dev;
int err;
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
err = nlmsg_parse(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY, NULL);
if (err < 0)
return err;
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 6d6f26531de..7d886b0a8b7 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -39,6 +39,8 @@ static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b)
{
if (a->proto != b->proto)
return 0;
+ if (a->vid != b->vid)
+ return 0;
switch (a->proto) {
case htons(ETH_P_IP):
return a->u.ip4 == b->u.ip4;
@@ -50,16 +52,19 @@ static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b)
return 0;
}
-static inline int __br_ip4_hash(struct net_bridge_mdb_htable *mdb, __be32 ip)
+static inline int __br_ip4_hash(struct net_bridge_mdb_htable *mdb, __be32 ip,
+ __u16 vid)
{
- return jhash_1word(mdb->secret, (__force u32)ip) & (mdb->max - 1);
+ return jhash_2words((__force u32)ip, vid, mdb->secret) & (mdb->max - 1);
}
#if IS_ENABLED(CONFIG_IPV6)
static inline int __br_ip6_hash(struct net_bridge_mdb_htable *mdb,
- const struct in6_addr *ip)
+ const struct in6_addr *ip,
+ __u16 vid)
{
- return jhash2((__force u32 *)ip->s6_addr32, 4, mdb->secret) & (mdb->max - 1);
+ return jhash_2words(ipv6_addr_hash(ip), vid,
+ mdb->secret) & (mdb->max - 1);
}
#endif
@@ -68,10 +73,10 @@ static inline int br_ip_hash(struct net_bridge_mdb_htable *mdb,
{
switch (ip->proto) {
case htons(ETH_P_IP):
- return __br_ip4_hash(mdb, ip->u.ip4);
+ return __br_ip4_hash(mdb, ip->u.ip4, ip->vid);
#if IS_ENABLED(CONFIG_IPV6)
case htons(ETH_P_IPV6):
- return __br_ip6_hash(mdb, &ip->u.ip6);
+ return __br_ip6_hash(mdb, &ip->u.ip6, ip->vid);
#endif
}
return 0;
@@ -101,24 +106,27 @@ struct net_bridge_mdb_entry *br_mdb_ip_get(struct net_bridge_mdb_htable *mdb,
}
static struct net_bridge_mdb_entry *br_mdb_ip4_get(
- struct net_bridge_mdb_htable *mdb, __be32 dst)
+ struct net_bridge_mdb_htable *mdb, __be32 dst, __u16 vid)
{
struct br_ip br_dst;
br_dst.u.ip4 = dst;
br_dst.proto = htons(ETH_P_IP);
+ br_dst.vid = vid;
return br_mdb_ip_get(mdb, &br_dst);
}
#if IS_ENABLED(CONFIG_IPV6)
static struct net_bridge_mdb_entry *br_mdb_ip6_get(
- struct net_bridge_mdb_htable *mdb, const struct in6_addr *dst)
+ struct net_bridge_mdb_htable *mdb, const struct in6_addr *dst,
+ __u16 vid)
{
struct br_ip br_dst;
br_dst.u.ip6 = *dst;
br_dst.proto = htons(ETH_P_IPV6);
+ br_dst.vid = vid;
return br_mdb_ip_get(mdb, &br_dst);
}
@@ -694,7 +702,8 @@ err:
static int br_ip4_multicast_add_group(struct net_bridge *br,
struct net_bridge_port *port,
- __be32 group)
+ __be32 group,
+ __u16 vid)
{
struct br_ip br_group;
@@ -703,6 +712,7 @@ static int br_ip4_multicast_add_group(struct net_bridge *br,
br_group.u.ip4 = group;
br_group.proto = htons(ETH_P_IP);
+ br_group.vid = vid;
return br_multicast_add_group(br, port, &br_group);
}
@@ -710,7 +720,8 @@ static int br_ip4_multicast_add_group(struct net_bridge *br,
#if IS_ENABLED(CONFIG_IPV6)
static int br_ip6_multicast_add_group(struct net_bridge *br,
struct net_bridge_port *port,
- const struct in6_addr *group)
+ const struct in6_addr *group,
+ __u16 vid)
{
struct br_ip br_group;
@@ -719,6 +730,7 @@ static int br_ip6_multicast_add_group(struct net_bridge *br,
br_group.u.ip6 = *group;
br_group.proto = htons(ETH_P_IPV6);
+ br_group.vid = vid;
return br_multicast_add_group(br, port, &br_group);
}
@@ -895,10 +907,12 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br,
int type;
int err = 0;
__be32 group;
+ u16 vid = 0;
if (!pskb_may_pull(skb, sizeof(*ih)))
return -EINVAL;
+ br_vlan_get_tag(skb, &vid);
ih = igmpv3_report_hdr(skb);
num = ntohs(ih->ngrec);
len = sizeof(*ih);
@@ -930,7 +944,7 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br,
continue;
}
- err = br_ip4_multicast_add_group(br, port, group);
+ err = br_ip4_multicast_add_group(br, port, group, vid);
if (err)
break;
}
@@ -949,10 +963,12 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
int len;
int num;
int err = 0;
+ u16 vid = 0;
if (!pskb_may_pull(skb, sizeof(*icmp6h)))
return -EINVAL;
+ br_vlan_get_tag(skb, &vid);
icmp6h = icmp6_hdr(skb);
num = ntohs(icmp6h->icmp6_dataun.un_data16[1]);
len = sizeof(*icmp6h);
@@ -990,7 +1006,8 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
continue;
}
- err = br_ip6_multicast_add_group(br, port, &grec->grec_mca);
+ err = br_ip6_multicast_add_group(br, port, &grec->grec_mca,
+ vid);
if (!err)
break;
}
@@ -1074,6 +1091,7 @@ static int br_ip4_multicast_query(struct net_bridge *br,
unsigned long now = jiffies;
__be32 group;
int err = 0;
+ u16 vid = 0;
spin_lock(&br->multicast_lock);
if (!netif_running(br->dev) ||
@@ -1108,7 +1126,8 @@ static int br_ip4_multicast_query(struct net_bridge *br,
if (!group)
goto out;
- mp = br_mdb_ip4_get(mlock_dereference(br->mdb, br), group);
+ br_vlan_get_tag(skb, &vid);
+ mp = br_mdb_ip4_get(mlock_dereference(br->mdb, br), group, vid);
if (!mp)
goto out;
@@ -1149,6 +1168,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
unsigned long now = jiffies;
const struct in6_addr *group = NULL;
int err = 0;
+ u16 vid = 0;
spin_lock(&br->multicast_lock);
if (!netif_running(br->dev) ||
@@ -1180,7 +1200,8 @@ static int br_ip6_multicast_query(struct net_bridge *br,
if (!group)
goto out;
- mp = br_mdb_ip6_get(mlock_dereference(br->mdb, br), group);
+ br_vlan_get_tag(skb, &vid);
+ mp = br_mdb_ip6_get(mlock_dereference(br->mdb, br), group, vid);
if (!mp)
goto out;
@@ -1286,7 +1307,8 @@ out:
static void br_ip4_multicast_leave_group(struct net_bridge *br,
struct net_bridge_port *port,
- __be32 group)
+ __be32 group,
+ __u16 vid)
{
struct br_ip br_group;
@@ -1295,6 +1317,7 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br,
br_group.u.ip4 = group;
br_group.proto = htons(ETH_P_IP);
+ br_group.vid = vid;
br_multicast_leave_group(br, port, &br_group);
}
@@ -1302,7 +1325,8 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br,
#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)
+ const struct in6_addr *group,
+ __u16 vid)
{
struct br_ip br_group;
@@ -1311,6 +1335,7 @@ static void br_ip6_multicast_leave_group(struct net_bridge *br,
br_group.u.ip6 = *group;
br_group.proto = htons(ETH_P_IPV6);
+ br_group.vid = vid;
br_multicast_leave_group(br, port, &br_group);
}
@@ -1326,6 +1351,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
unsigned int len;
unsigned int offset;
int err;
+ u16 vid = 0;
/* We treat OOM as packet loss for now. */
if (!pskb_may_pull(skb, sizeof(*iph)))
@@ -1386,6 +1412,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
err = 0;
+ br_vlan_get_tag(skb2, &vid);
BR_INPUT_SKB_CB(skb)->igmp = 1;
ih = igmp_hdr(skb2);
@@ -1393,7 +1420,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
case IGMP_HOST_MEMBERSHIP_REPORT:
case IGMPV2_HOST_MEMBERSHIP_REPORT:
BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
- err = br_ip4_multicast_add_group(br, port, ih->group);
+ err = br_ip4_multicast_add_group(br, port, ih->group, vid);
break;
case IGMPV3_HOST_MEMBERSHIP_REPORT:
err = br_ip4_multicast_igmp3_report(br, port, skb2);
@@ -1402,7 +1429,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
err = br_ip4_multicast_query(br, port, skb2);
break;
case IGMP_HOST_LEAVE_MESSAGE:
- br_ip4_multicast_leave_group(br, port, ih->group);
+ br_ip4_multicast_leave_group(br, port, ih->group, vid);
break;
}
@@ -1427,6 +1454,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
unsigned int len;
int offset;
int err;
+ u16 vid = 0;
if (!pskb_may_pull(skb, sizeof(*ip6h)))
return -EINVAL;
@@ -1510,6 +1538,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
err = 0;
+ br_vlan_get_tag(skb, &vid);
BR_INPUT_SKB_CB(skb)->igmp = 1;
switch (icmp6_type) {
@@ -1522,7 +1551,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
}
mld = (struct mld_msg *)skb_transport_header(skb2);
BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
- err = br_ip6_multicast_add_group(br, port, &mld->mld_mca);
+ err = br_ip6_multicast_add_group(br, port, &mld->mld_mca, vid);
break;
}
case ICMPV6_MLD2_REPORT:
@@ -1539,7 +1568,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
goto out;
}
mld = (struct mld_msg *)skb_transport_header(skb2);
- br_ip6_multicast_leave_group(br, port, &mld->mld_mca);
+ br_ip6_multicast_leave_group(br, port, &mld->mld_mca, vid);
}
}
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 5dc66abcc9e..27aa3ee517c 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -16,6 +16,7 @@
#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"
@@ -64,15 +65,21 @@ static int br_port_fill_attrs(struct sk_buff *skb,
* 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, const struct net_bridge_port *port,
- u32 pid, u32 seq, int event, unsigned int flags)
+static int br_fill_ifinfo(struct sk_buff *skb,
+ const struct net_bridge_port *port,
+ u32 pid, u32 seq, int event, unsigned int flags,
+ u32 filter_mask, const struct net_device *dev)
{
- const struct net_bridge *br = port->br;
- const struct net_device *dev = port->dev;
+ const 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);
@@ -98,7 +105,7 @@ static int br_fill_ifinfo(struct sk_buff *skb, const struct net_bridge_port *por
nla_put_u32(skb, IFLA_LINK, dev->iflink)))
goto nla_put_failure;
- if (event == RTM_NEWLINK) {
+ if (event == RTM_NEWLINK && port) {
struct nlattr *nest
= nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
@@ -107,6 +114,48 @@ static int br_fill_ifinfo(struct sk_buff *skb, const struct net_bridge_port *por
nla_nest_end(skb, nest);
}
+ /* Check if the VID information is requested */
+ if (filter_mask & RTEXT_FILTER_BRVLAN) {
+ struct nlattr *af;
+ const struct net_port_vlans *pv;
+ struct bridge_vlan_info vinfo;
+ u16 vid;
+ u16 pvid;
+
+ if (port)
+ pv = nbp_get_vlan_info(port);
+ else
+ pv = br_get_vlan_info(br);
+
+ if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN))
+ goto done;
+
+ af = nla_nest_start(skb, IFLA_AF_SPEC);
+ if (!af)
+ goto nla_put_failure;
+
+ pvid = br_get_pvid(pv);
+ for (vid = find_first_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN);
+ vid < BR_VLAN_BITMAP_LEN;
+ vid = find_next_bit(pv->vlan_bitmap,
+ BR_VLAN_BITMAP_LEN, vid+1)) {
+ vinfo.vid = vid;
+ vinfo.flags = 0;
+ if (vid == pvid)
+ vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
+
+ if (test_bit(vid, pv->untagged_bitmap))
+ vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
+
+ if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
+ sizeof(vinfo), &vinfo))
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(skb, af);
+ }
+
+done:
return nlmsg_end(skb, nlh);
nla_put_failure:
@@ -119,10 +168,14 @@ nla_put_failure:
*/
void br_ifinfo_notify(int event, struct net_bridge_port *port)
{
- struct net *net = dev_net(port->dev);
+ struct net *net;
struct sk_buff *skb;
int err = -ENOBUFS;
+ 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);
@@ -130,7 +183,7 @@ void br_ifinfo_notify(int event, struct net_bridge_port *port)
if (skb == NULL)
goto errout;
- err = br_fill_ifinfo(skb, port, 0, 0, event, 0);
+ err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev);
if (err < 0) {
/* -EMSGSIZE implies BUG in br_nlmsg_size() */
WARN_ON(err == -EMSGSIZE);
@@ -144,24 +197,85 @@ 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)
+ struct net_device *dev, u32 filter_mask)
{
int err = 0;
struct net_bridge_port *port = br_port_get_rcu(dev);
- /* not a bridge port */
- if (!port)
+ /* not a bridge port and */
+ if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN))
goto out;
- err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI);
+ err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI,
+ filter_mask, dev);
out:
return err;
}
+static const struct nla_policy ifla_br_policy[IFLA_MAX+1] = {
+ [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 },
+ [IFLA_BRIDGE_MODE] = { .type = NLA_U16 },
+ [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY,
+ .len = sizeof(struct bridge_vlan_info), },
+};
+
+static int br_afspec(struct net_bridge *br,
+ struct net_bridge_port *p,
+ struct nlattr *af_spec,
+ int cmd)
+{
+ struct nlattr *tb[IFLA_BRIDGE_MAX+1];
+ int err = 0;
+
+ err = nla_parse_nested(tb, IFLA_BRIDGE_MAX, af_spec, ifla_br_policy);
+ if (err)
+ return err;
+
+ if (tb[IFLA_BRIDGE_VLAN_INFO]) {
+ struct bridge_vlan_info *vinfo;
+
+ vinfo = nla_data(tb[IFLA_BRIDGE_VLAN_INFO]);
+
+ if (vinfo->vid >= VLAN_N_VID)
+ return -EINVAL;
+
+ switch (cmd) {
+ case RTM_SETLINK:
+ if (p) {
+ err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
+ if (err)
+ break;
+
+ if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
+ err = br_vlan_add(p->br, vinfo->vid,
+ vinfo->flags);
+ } else
+ err = br_vlan_add(br, vinfo->vid, vinfo->flags);
+
+ if (err)
+ break;
+
+ 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 const struct nla_policy ifla_brport_policy[IFLA_BRPORT_MAX + 1] = {
[IFLA_BRPORT_STATE] = { .type = NLA_U8 },
[IFLA_BRPORT_COST] = { .type = NLA_U32 },
@@ -181,8 +295,11 @@ static int br_set_port_state(struct net_bridge_port *p, u8 state)
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_carrier_ok(p->dev) && state != BR_STATE_DISABLED))
+ (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
return -ENETDOWN;
p->state = state;
@@ -238,6 +355,7 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
{
struct ifinfomsg *ifm;
struct nlattr *protinfo;
+ struct nlattr *afspec;
struct net_bridge_port *p;
struct nlattr *tb[IFLA_BRPORT_MAX + 1];
int err;
@@ -245,38 +363,76 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
ifm = nlmsg_data(nlh);
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
- if (!protinfo)
+ afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC);
+ if (!protinfo && !afspec)
return 0;
p = br_port_get_rtnl(dev);
- if (!p)
+ /* We want to accept dev as bridge itself if the AF_SPEC
+ * is set to see if someone is setting vlan info on the brigde
+ */
+ if (!p && ((dev->priv_flags & IFF_EBRIDGE) && !afspec))
return -EINVAL;
- if (protinfo->nla_type & NLA_F_NESTED) {
- err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
- protinfo, ifla_brport_policy);
+ if (p && protinfo) {
+ if (protinfo->nla_type & NLA_F_NESTED) {
+ err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
+ protinfo, ifla_brport_policy);
+ if (err)
+ return err;
+
+ spin_lock_bh(&p->br->lock);
+ err = br_setport(p, tb);
+ spin_unlock_bh(&p->br->lock);
+ } else {
+ /* Binary compatability 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)
- return err;
-
- spin_lock_bh(&p->br->lock);
- err = br_setport(p, tb);
- spin_unlock_bh(&p->br->lock);
- } else {
- /* Binary compatability with old RSTP */
- if (nla_len(protinfo) < sizeof(u8))
- return -EINVAL;
+ goto out;
+ }
- spin_lock_bh(&p->br->lock);
- err = br_set_port_state(p, nla_get_u8(protinfo));
- spin_unlock_bh(&p->br->lock);
+ 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)
+{
+ struct ifinfomsg *ifm;
+ struct nlattr *afspec;
+ struct net_bridge_port *p;
+ int err;
+
+ ifm = nlmsg_data(nlh);
+
+ afspec = nlmsg_find_attr(nlh, sizeof(*ifm), 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);
+
+ return err;
+}
static int br_validate(struct nlattr *tb[], struct nlattr *data[])
{
if (tb[IFLA_ADDRESS]) {
@@ -289,6 +445,29 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[])
return 0;
}
+static size_t br_get_link_af_size(const struct net_device *dev)
+{
+ struct net_port_vlans *pv;
+
+ if (br_port_exists(dev))
+ pv = nbp_get_vlan_info(br_port_get_rcu(dev));
+ else if (dev->priv_flags & IFF_EBRIDGE)
+ pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev));
+ else
+ return 0;
+
+ if (!pv)
+ return 0;
+
+ /* Each VLAN is returned in bridge_vlan_info along with flags */
+ return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info));
+}
+
+static struct rtnl_af_ops br_af_ops = {
+ .family = AF_BRIDGE,
+ .get_link_af_size = br_get_link_af_size,
+};
+
struct rtnl_link_ops br_link_ops __read_mostly = {
.kind = "bridge",
.priv_size = sizeof(struct net_bridge),
@@ -302,11 +481,18 @@ int __init br_netlink_init(void)
int err;
br_mdb_init();
- err = rtnl_link_register(&br_link_ops);
+ err = rtnl_af_register(&br_af_ops);
if (err)
goto out;
+ err = rtnl_link_register(&br_link_ops);
+ if (err)
+ goto out_af;
+
return 0;
+
+out_af:
+ rtnl_af_unregister(&br_af_ops);
out:
br_mdb_uninit();
return err;
@@ -315,5 +501,6 @@ out:
void __exit br_netlink_fini(void)
{
br_mdb_uninit();
+ rtnl_af_unregister(&br_af_ops);
rtnl_link_unregister(&br_link_ops);
}
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index a76b6213555..1644b3e1f94 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -82,7 +82,7 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
break;
case NETDEV_UP:
- if (netif_carrier_ok(dev) && (br->dev->flags & IFF_UP)) {
+ if (netif_running(br->dev) && netif_oper_up(dev)) {
spin_lock_bh(&br->lock);
br_stp_enable_port(p);
spin_unlock_bh(&br->lock);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 711094aed41..6d314c4e6bc 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -18,6 +18,7 @@
#include <linux/netpoll.h>
#include <linux/u64_stats_sync.h>
#include <net/route.h>
+#include <linux/if_vlan.h>
#define BR_HASH_BITS 8
#define BR_HASH_SIZE (1 << BR_HASH_BITS)
@@ -26,6 +27,7 @@
#define BR_PORT_BITS 10
#define BR_MAX_PORTS (1<<BR_PORT_BITS)
+#define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
#define BR_VERSION "2.3"
@@ -61,6 +63,20 @@ struct br_ip
#endif
} u;
__be16 proto;
+ __u16 vid;
+};
+
+struct net_port_vlans {
+ u16 port_idx;
+ u16 pvid;
+ union {
+ struct net_bridge_port *port;
+ struct net_bridge *br;
+ } parent;
+ struct rcu_head rcu;
+ unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
+ unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
+ u16 num_vlans;
};
struct net_bridge_fdb_entry
@@ -74,6 +90,7 @@ struct net_bridge_fdb_entry
mac_addr addr;
unsigned char is_local;
unsigned char is_static;
+ __u16 vlan_id;
};
struct net_bridge_port_group {
@@ -156,6 +173,9 @@ struct net_bridge_port
#ifdef CONFIG_NET_POLL_CONTROLLER
struct netpoll *np;
#endif
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+ struct net_port_vlans __rcu *vlan_info;
+#endif
};
#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
@@ -197,9 +217,6 @@ struct net_bridge
bool nf_call_ip6tables;
bool nf_call_arptables;
#endif
- unsigned long flags;
-#define BR_SET_MAC_ADDR 0x00000001
-
u16 group_fwd_mask;
/* STP */
@@ -260,6 +277,10 @@ struct net_bridge
struct timer_list topology_change_timer;
struct timer_list gc_timer;
struct kobject *ifobj;
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+ u8 vlan_enabled;
+ struct net_port_vlans __rcu *vlan_info;
+#endif
};
struct br_input_skb_cb {
@@ -355,18 +376,22 @@ extern void br_fdb_cleanup(unsigned long arg);
extern void br_fdb_delete_by_port(struct net_bridge *br,
const struct net_bridge_port *p, int do_all);
extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
- const unsigned char *addr);
+ const unsigned char *addr,
+ __u16 vid);
extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
unsigned long count, unsigned long off);
extern int br_fdb_insert(struct net_bridge *br,
struct net_bridge_port *source,
- const unsigned char *addr);
+ const unsigned char *addr,
+ u16 vid);
extern void br_fdb_update(struct net_bridge *br,
struct net_bridge_port *source,
- const unsigned char *addr);
+ const unsigned char *addr,
+ u16 vid);
+extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid);
-extern int br_fdb_delete(struct ndmsg *ndm,
+extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr);
extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[],
@@ -534,6 +559,142 @@ static inline void br_mdb_uninit(void)
}
#endif
+/* br_vlan.c */
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
+ struct sk_buff *skb, u16 *vid);
+extern bool br_allowed_egress(struct net_bridge *br,
+ const struct net_port_vlans *v,
+ const struct sk_buff *skb);
+extern struct sk_buff *br_handle_vlan(struct net_bridge *br,
+ const struct net_port_vlans *v,
+ struct sk_buff *skb);
+extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
+extern int br_vlan_delete(struct net_bridge *br, u16 vid);
+extern void br_vlan_flush(struct net_bridge *br);
+extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
+extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
+extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
+extern void nbp_vlan_flush(struct net_bridge_port *port);
+extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
+
+static inline struct net_port_vlans *br_get_vlan_info(
+ const struct net_bridge *br)
+{
+ return rcu_dereference_rtnl(br->vlan_info);
+}
+
+static inline struct net_port_vlans *nbp_get_vlan_info(
+ const struct net_bridge_port *p)
+{
+ return rcu_dereference_rtnl(p->vlan_info);
+}
+
+/* Since bridge now depends on 8021Q module, but the time bridge sees the
+ * skb, the vlan tag will always be present if the frame was tagged.
+ */
+static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
+{
+ int err = 0;
+
+ if (vlan_tx_tag_present(skb))
+ *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
+ else {
+ *vid = 0;
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static inline u16 br_get_pvid(const struct net_port_vlans *v)
+{
+ /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if
+ * vid wasn't set
+ */
+ smp_rmb();
+ return (v->pvid & VLAN_TAG_PRESENT) ?
+ (v->pvid & ~VLAN_TAG_PRESENT) :
+ VLAN_N_VID;
+}
+
+#else
+static inline bool br_allowed_ingress(struct net_bridge *br,
+ struct net_port_vlans *v,
+ struct sk_buff *skb,
+ u16 *vid)
+{
+ return true;
+}
+
+static inline bool br_allowed_egress(struct net_bridge *br,
+ const struct net_port_vlans *v,
+ const struct sk_buff *skb)
+{
+ return true;
+}
+
+static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
+ const struct net_port_vlans *v,
+ struct sk_buff *skb)
+{
+ return skb;
+}
+
+static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void br_vlan_flush(struct net_bridge *br)
+{
+}
+
+static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void nbp_vlan_flush(struct net_bridge_port *port)
+{
+}
+
+static inline struct net_port_vlans *br_get_vlan_info(
+ const struct net_bridge *br)
+{
+ return NULL;
+}
+static inline struct net_port_vlans *nbp_get_vlan_info(
+ const struct net_bridge_port *p)
+{
+ return NULL;
+}
+
+static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
+{
+ return false;
+}
+
+static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
+{
+ return 0;
+}
+static inline u16 br_get_pvid(const struct net_port_vlans *v)
+{
+ return VLAN_N_VID; /* Returns invalid vid */
+}
+#endif
+
/* br_netfilter.c */
#ifdef CONFIG_BRIDGE_NETFILTER
extern int br_netfilter_init(void);
@@ -594,8 +755,9 @@ extern int br_netlink_init(void);
extern void br_netlink_fini(void);
extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
+extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
- struct net_device *dev);
+ struct net_device *dev, u32 filter_mask);
#ifdef CONFIG_SYSFS
/* br_sysfs_if.c */
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 9d5a414a394..0bdb4ebd362 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -54,7 +54,7 @@ void br_stp_enable_bridge(struct net_bridge *br)
br_config_bpdu_generation(br);
list_for_each_entry(p, &br->port_list, list) {
- if ((p->dev->flags & IFF_UP) && netif_carrier_ok(p->dev))
+ if (netif_running(p->dev) && netif_oper_up(p->dev))
br_stp_enable_port(p);
}
@@ -216,7 +216,7 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
struct net_bridge_port *p;
/* user has chosen a value so keep it */
- if (br->flags & BR_SET_MAC_ADDR)
+ if (br->dev->addr_assign_type == NET_ADDR_SET)
return false;
list_for_each_entry(p, &br->port_list, list) {
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 5913a3a0047..8baa9c08e1a 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -691,6 +691,24 @@ static ssize_t store_nf_call_arptables(
static DEVICE_ATTR(nf_call_arptables, S_IRUGO | S_IWUSR,
show_nf_call_arptables, store_nf_call_arptables);
#endif
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+static ssize_t show_vlan_filtering(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct net_bridge *br = to_bridge(d);
+ return sprintf(buf, "%d\n", br->vlan_enabled);
+}
+
+static ssize_t store_vlan_filtering(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ return store_bridge_parm(d, buf, len, br_vlan_filter_toggle);
+}
+static DEVICE_ATTR(vlan_filtering, S_IRUGO | S_IWUSR,
+ show_vlan_filtering, store_vlan_filtering);
+#endif
static struct attribute *bridge_attrs[] = {
&dev_attr_forward_delay.attr,
@@ -732,6 +750,9 @@ static struct attribute *bridge_attrs[] = {
&dev_attr_nf_call_ip6tables.attr,
&dev_attr_nf_call_arptables.attr,
#endif
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+ &dev_attr_vlan_filtering.attr,
+#endif
NULL
};
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
new file mode 100644
index 00000000000..93dde75923f
--- /dev/null
+++ b/net/bridge/br_vlan.c
@@ -0,0 +1,415 @@
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/slab.h>
+
+#include "br_private.h"
+
+static void __vlan_add_pvid(struct net_port_vlans *v, u16 vid)
+{
+ if (v->pvid == vid)
+ return;
+
+ smp_wmb();
+ v->pvid = vid;
+}
+
+static void __vlan_delete_pvid(struct net_port_vlans *v, u16 vid)
+{
+ if (v->pvid != vid)
+ return;
+
+ smp_wmb();
+ v->pvid = 0;
+}
+
+static void __vlan_add_flags(struct net_port_vlans *v, u16 vid, u16 flags)
+{
+ if (flags & BRIDGE_VLAN_INFO_PVID)
+ __vlan_add_pvid(v, vid);
+
+ if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
+ set_bit(vid, v->untagged_bitmap);
+}
+
+static int __vlan_add(struct net_port_vlans *v, u16 vid, u16 flags)
+{
+ struct net_bridge_port *p = NULL;
+ struct net_bridge *br;
+ struct net_device *dev;
+ int err;
+
+ if (test_bit(vid, v->vlan_bitmap)) {
+ __vlan_add_flags(v, vid, flags);
+ return 0;
+ }
+
+ if (vid) {
+ if (v->port_idx) {
+ p = v->parent.port;
+ br = p->br;
+ dev = p->dev;
+ } else {
+ br = v->parent.br;
+ dev = br->dev;
+ }
+
+ if (p && (dev->features & NETIF_F_HW_VLAN_FILTER)) {
+ /* Add VLAN to the device filter if it is supported.
+ * Stricly speaking, this is not necessary now, since
+ * devices are made promiscuous by the bridge, but if
+ * that ever changes this code will allow tagged
+ * traffic to enter the bridge.
+ */
+ err = dev->netdev_ops->ndo_vlan_rx_add_vid(dev, vid);
+ if (err)
+ return err;
+ }
+
+ err = br_fdb_insert(br, p, dev->dev_addr, vid);
+ if (err) {
+ br_err(br, "failed insert local address into bridge "
+ "forwarding table\n");
+ goto out_filt;
+ }
+
+ }
+
+ set_bit(vid, v->vlan_bitmap);
+ v->num_vlans++;
+ __vlan_add_flags(v, vid, flags);
+
+ return 0;
+
+out_filt:
+ if (p && (dev->features & NETIF_F_HW_VLAN_FILTER))
+ dev->netdev_ops->ndo_vlan_rx_kill_vid(dev, vid);
+ return err;
+}
+
+static int __vlan_del(struct net_port_vlans *v, u16 vid)
+{
+ if (!test_bit(vid, v->vlan_bitmap))
+ return -EINVAL;
+
+ __vlan_delete_pvid(v, vid);
+ clear_bit(vid, v->untagged_bitmap);
+
+ if (v->port_idx && vid) {
+ struct net_device *dev = v->parent.port->dev;
+
+ if (dev->features & NETIF_F_HW_VLAN_FILTER)
+ dev->netdev_ops->ndo_vlan_rx_kill_vid(dev, vid);
+ }
+
+ clear_bit(vid, v->vlan_bitmap);
+ v->num_vlans--;
+ if (bitmap_empty(v->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
+ if (v->port_idx)
+ rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+ else
+ rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+ kfree_rcu(v, rcu);
+ }
+ return 0;
+}
+
+static void __vlan_flush(struct net_port_vlans *v)
+{
+ smp_wmb();
+ v->pvid = 0;
+ bitmap_zero(v->vlan_bitmap, BR_VLAN_BITMAP_LEN);
+ if (v->port_idx)
+ rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+ else
+ rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+ kfree_rcu(v, rcu);
+}
+
+/* Strip the tag from the packet. Will return skb with tci set 0. */
+static struct sk_buff *br_vlan_untag(struct sk_buff *skb)
+{
+ if (skb->protocol != htons(ETH_P_8021Q)) {
+ skb->vlan_tci = 0;
+ return skb;
+ }
+
+ skb->vlan_tci = 0;
+ skb = vlan_untag(skb);
+ if (skb)
+ skb->vlan_tci = 0;
+
+ return skb;
+}
+
+struct sk_buff *br_handle_vlan(struct net_bridge *br,
+ const struct net_port_vlans *pv,
+ struct sk_buff *skb)
+{
+ u16 vid;
+
+ if (!br->vlan_enabled)
+ goto out;
+
+ /* At this point, we know that the frame was filtered and contains
+ * a valid vlan id. If the vlan id is set in the untagged bitmap,
+ * send untagged; otherwise, send taged.
+ */
+ br_vlan_get_tag(skb, &vid);
+ if (test_bit(vid, pv->untagged_bitmap))
+ skb = br_vlan_untag(skb);
+ else {
+ /* Egress policy says "send tagged". If output device
+ * is the bridge, we need to add the VLAN header
+ * ourselves since we'll be going through the RX path.
+ * Sending to ports puts the frame on the TX path and
+ * we let dev_hard_start_xmit() add the header.
+ */
+ if (skb->protocol != htons(ETH_P_8021Q) &&
+ pv->port_idx == 0) {
+ /* vlan_put_tag expects skb->data to point to
+ * mac header.
+ */
+ skb_push(skb, ETH_HLEN);
+ skb = __vlan_put_tag(skb, skb->vlan_tci);
+ if (!skb)
+ goto out;
+ /* put skb->data back to where it was */
+ skb_pull(skb, ETH_HLEN);
+ skb->vlan_tci = 0;
+ }
+ }
+
+out:
+ return skb;
+}
+
+/* Called under RCU */
+bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
+ struct sk_buff *skb, u16 *vid)
+{
+ /* If VLAN filtering is disabled on the bridge, all packets are
+ * permitted.
+ */
+ if (!br->vlan_enabled)
+ return true;
+
+ /* If there are no vlan in the permitted list, all packets are
+ * rejected.
+ */
+ if (!v)
+ return false;
+
+ if (br_vlan_get_tag(skb, vid)) {
+ u16 pvid = br_get_pvid(v);
+
+ /* Frame did not have a tag. See if pvid is set
+ * on this port. That tells us which vlan untagged
+ * traffic belongs to.
+ */
+ if (pvid == VLAN_N_VID)
+ return false;
+
+ /* PVID is set on this port. Any untagged ingress
+ * frame is considered to belong to this vlan.
+ */
+ __vlan_hwaccel_put_tag(skb, pvid);
+ return true;
+ }
+
+ /* Frame had a valid vlan tag. See if vlan is allowed */
+ if (test_bit(*vid, v->vlan_bitmap))
+ return true;
+
+ return false;
+}
+
+/* Called under RCU. */
+bool br_allowed_egress(struct net_bridge *br,
+ const struct net_port_vlans *v,
+ const struct sk_buff *skb)
+{
+ u16 vid;
+
+ if (!br->vlan_enabled)
+ return true;
+
+ if (!v)
+ return false;
+
+ br_vlan_get_tag(skb, &vid);
+ if (test_bit(vid, v->vlan_bitmap))
+ return true;
+
+ return false;
+}
+
+/* Must be protected by RTNL */
+int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
+{
+ struct net_port_vlans *pv = NULL;
+ int err;
+
+ ASSERT_RTNL();
+
+ pv = rtnl_dereference(br->vlan_info);
+ if (pv)
+ return __vlan_add(pv, vid, flags);
+
+ /* Create port vlan infomration
+ */
+ pv = kzalloc(sizeof(*pv), GFP_KERNEL);
+ if (!pv)
+ return -ENOMEM;
+
+ pv->parent.br = br;
+ err = __vlan_add(pv, vid, flags);
+ if (err)
+ goto out;
+
+ rcu_assign_pointer(br->vlan_info, pv);
+ return 0;
+out:
+ kfree(pv);
+ return err;
+}
+
+/* Must be protected by RTNL */
+int br_vlan_delete(struct net_bridge *br, u16 vid)
+{
+ struct net_port_vlans *pv;
+
+ ASSERT_RTNL();
+
+ pv = rtnl_dereference(br->vlan_info);
+ if (!pv)
+ return -EINVAL;
+
+ if (vid) {
+ /* If the VID !=0 remove fdb for this vid. VID 0 is special
+ * in that it's the default and is always there in the fdb.
+ */
+ spin_lock_bh(&br->hash_lock);
+ fdb_delete_by_addr(br, br->dev->dev_addr, vid);
+ spin_unlock_bh(&br->hash_lock);
+ }
+
+ __vlan_del(pv, vid);
+ return 0;
+}
+
+void br_vlan_flush(struct net_bridge *br)
+{
+ struct net_port_vlans *pv;
+
+ ASSERT_RTNL();
+ pv = rtnl_dereference(br->vlan_info);
+ if (!pv)
+ return;
+
+ __vlan_flush(pv);
+}
+
+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;
+
+ br->vlan_enabled = val;
+
+unlock:
+ rtnl_unlock();
+ return 0;
+}
+
+/* Must be protected by RTNL */
+int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
+{
+ struct net_port_vlans *pv = NULL;
+ int err;
+
+ ASSERT_RTNL();
+
+ pv = rtnl_dereference(port->vlan_info);
+ if (pv)
+ return __vlan_add(pv, vid, flags);
+
+ /* Create port vlan infomration
+ */
+ pv = kzalloc(sizeof(*pv), GFP_KERNEL);
+ if (!pv) {
+ err = -ENOMEM;
+ goto clean_up;
+ }
+
+ pv->port_idx = port->port_no;
+ pv->parent.port = port;
+ err = __vlan_add(pv, vid, flags);
+ if (err)
+ goto clean_up;
+
+ rcu_assign_pointer(port->vlan_info, pv);
+ return 0;
+
+clean_up:
+ kfree(pv);
+ return err;
+}
+
+/* Must be protected by RTNL */
+int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
+{
+ struct net_port_vlans *pv;
+
+ ASSERT_RTNL();
+
+ pv = rtnl_dereference(port->vlan_info);
+ if (!pv)
+ return -EINVAL;
+
+ if (vid) {
+ /* If the VID !=0 remove fdb for this vid. VID 0 is special
+ * in that it's the default and is always there in the fdb.
+ */
+ spin_lock_bh(&port->br->hash_lock);
+ fdb_delete_by_addr(port->br, port->dev->dev_addr, vid);
+ spin_unlock_bh(&port->br->hash_lock);
+ }
+
+ return __vlan_del(pv, vid);
+}
+
+void nbp_vlan_flush(struct net_bridge_port *port)
+{
+ struct net_port_vlans *pv;
+
+ ASSERT_RTNL();
+
+ pv = rtnl_dereference(port->vlan_info);
+ if (!pv)
+ return;
+
+ __vlan_flush(pv);
+}
+
+bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
+{
+ struct net_port_vlans *pv;
+ bool found = false;
+
+ rcu_read_lock();
+ pv = rcu_dereference(port->vlan_info);
+
+ if (!pv)
+ goto out;
+
+ if (test_bit(vid, pv->vlan_bitmap))
+ found = true;
+
+out:
+ rcu_read_unlock();
+ return found;
+}
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index 3476ec46974..3bf43f7bb9d 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -70,8 +70,7 @@ static void ulog_send(unsigned int nlgroup)
{
ebt_ulog_buff_t *ub = &ulog_buffers[nlgroup];
- if (timer_pending(&ub->timer))
- del_timer(&ub->timer);
+ del_timer(&ub->timer);
if (!ub->skb)
return;
@@ -319,8 +318,7 @@ static void __exit ebt_ulog_fini(void)
xt_unregister_target(&ebt_ulog_tg_reg);
for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
ub = &ulog_buffers[i];
- if (timer_pending(&ub->timer))
- del_timer(&ub->timer);
+ del_timer(&ub->timer);
spin_lock_bh(&ub->lock);
if (ub->skb) {
kfree_skb(ub->skb);
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 5fe2ff3b01e..8d493c91a56 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1472,16 +1472,17 @@ static int do_ebt_set_ctl(struct sock *sk,
int cmd, void __user *user, unsigned int len)
{
int ret;
+ struct net *net = sock_net(sk);
- if (!capable(CAP_NET_ADMIN))
+ if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
switch(cmd) {
case EBT_SO_SET_ENTRIES:
- ret = do_replace(sock_net(sk), user, len);
+ ret = do_replace(net, user, len);
break;
case EBT_SO_SET_COUNTERS:
- ret = update_counters(sock_net(sk), user, len);
+ ret = update_counters(net, user, len);
break;
default:
ret = -EINVAL;
@@ -1494,14 +1495,15 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
int ret;
struct ebt_replace tmp;
struct ebt_table *t;
+ struct net *net = sock_net(sk);
- if (!capable(CAP_NET_ADMIN))
+ if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
if (copy_from_user(&tmp, user, sizeof(tmp)))
return -EFAULT;
- t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
+ t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
if (!t)
return ret;
@@ -2279,16 +2281,17 @@ static int compat_do_ebt_set_ctl(struct sock *sk,
int cmd, void __user *user, unsigned int len)
{
int ret;
+ struct net *net = sock_net(sk);
- if (!capable(CAP_NET_ADMIN))
+ if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
switch (cmd) {
case EBT_SO_SET_ENTRIES:
- ret = compat_do_replace(sock_net(sk), user, len);
+ ret = compat_do_replace(net, user, len);
break;
case EBT_SO_SET_COUNTERS:
- ret = compat_update_counters(sock_net(sk), user, len);
+ ret = compat_update_counters(net, user, len);
break;
default:
ret = -EINVAL;
@@ -2302,8 +2305,9 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
int ret;
struct compat_ebt_replace tmp;
struct ebt_table *t;
+ struct net *net = sock_net(sk);
- if (!capable(CAP_NET_ADMIN))
+ if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
/* try real handler in case userland supplied needed padding */
@@ -2314,7 +2318,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
if (copy_from_user(&tmp, user, sizeof(tmp)))
return -EFAULT;
- t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
+ t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
if (!t)
return ret;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 20:09:12 +0000