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Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_mdb.c120
-rw-r--r--net/bridge/br_private.h7
2 files changed, 127 insertions, 0 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 321be94c445a..bd3a7d881d52 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -974,6 +974,116 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
return ret;
}
+static int br_mdb_config_attrs_init(struct nlattr *set_attrs,
+ struct br_mdb_config *cfg,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *mdb_attrs[MDBE_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(mdb_attrs, MDBE_ATTR_MAX, set_attrs,
+ br_mdbe_attrs_pol, extack);
+ if (err)
+ return err;
+
+ if (mdb_attrs[MDBE_ATTR_SOURCE] &&
+ !is_valid_mdb_source(mdb_attrs[MDBE_ATTR_SOURCE],
+ cfg->entry->addr.proto, extack))
+ return -EINVAL;
+
+ __mdb_entry_to_br_ip(cfg->entry, &cfg->group, mdb_attrs);
+
+ return 0;
+}
+
+static int br_mdb_config_init(struct net *net, const struct nlmsghdr *nlh,
+ struct br_mdb_config *cfg,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1];
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
+ MDBA_SET_ENTRY_MAX, NULL, extack);
+ if (err)
+ return err;
+
+ memset(cfg, 0, sizeof(*cfg));
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid bridge ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG_MOD(extack, "Bridge device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (!netif_is_bridge_master(dev)) {
+ NL_SET_ERR_MSG_MOD(extack, "Device is not a bridge");
+ return -EOPNOTSUPP;
+ }
+
+ cfg->br = netdev_priv(dev);
+
+ if (!netif_running(cfg->br->dev)) {
+ NL_SET_ERR_MSG_MOD(extack, "Bridge device is not running");
+ return -EINVAL;
+ }
+
+ if (!br_opt_get(cfg->br, BROPT_MULTICAST_ENABLED)) {
+ NL_SET_ERR_MSG_MOD(extack, "Bridge's multicast processing is disabled");
+ return -EINVAL;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) {
+ NL_SET_ERR_MSG_MOD(extack, "Missing MDBA_SET_ENTRY attribute");
+ return -EINVAL;
+ }
+ if (nla_len(tb[MDBA_SET_ENTRY]) != sizeof(struct br_mdb_entry)) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid MDBA_SET_ENTRY attribute length");
+ return -EINVAL;
+ }
+
+ cfg->entry = nla_data(tb[MDBA_SET_ENTRY]);
+ if (!is_valid_mdb_entry(cfg->entry, extack))
+ return -EINVAL;
+
+ if (cfg->entry->ifindex != cfg->br->dev->ifindex) {
+ struct net_device *pdev;
+
+ pdev = __dev_get_by_index(net, cfg->entry->ifindex);
+ if (!pdev) {
+ NL_SET_ERR_MSG_MOD(extack, "Port net device doesn't exist");
+ return -ENODEV;
+ }
+
+ cfg->p = br_port_get_rtnl(pdev);
+ if (!cfg->p) {
+ NL_SET_ERR_MSG_MOD(extack, "Net device is not a bridge port");
+ return -EINVAL;
+ }
+
+ if (cfg->p->br != cfg->br) {
+ NL_SET_ERR_MSG_MOD(extack, "Port belongs to a different bridge device");
+ return -EINVAL;
+ }
+ }
+
+ if (tb[MDBA_SET_ENTRY_ATTRS])
+ return br_mdb_config_attrs_init(tb[MDBA_SET_ENTRY_ATTRS], cfg,
+ extack);
+ else
+ __mdb_entry_to_br_ip(cfg->entry, &cfg->group, NULL);
+
+ return 0;
+}
+
static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@@ -984,9 +1094,14 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net_device *dev, *pdev;
struct br_mdb_entry *entry;
struct net_bridge_vlan *v;
+ struct br_mdb_config cfg;
struct net_bridge *br;
int err;
+ err = br_mdb_config_init(net, nlh, &cfg, extack);
+ if (err)
+ return err;
+
err = br_mdb_parse(skb, nlh, &dev, &entry, mdb_attrs, extack);
if (err < 0)
return err;
@@ -1101,9 +1216,14 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net_device *dev, *pdev;
struct br_mdb_entry *entry;
struct net_bridge_vlan *v;
+ struct br_mdb_config cfg;
struct net_bridge *br;
int err;
+ err = br_mdb_config_init(net, nlh, &cfg, extack);
+ if (err)
+ return err;
+
err = br_mdb_parse(skb, nlh, &dev, &entry, mdb_attrs, extack);
if (err < 0)
return err;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 4c4fda930068..0a09f10966dc 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -92,6 +92,13 @@ struct bridge_mcast_stats {
struct br_mcast_stats mstats;
struct u64_stats_sync syncp;
};
+
+struct br_mdb_config {
+ struct net_bridge *br;
+ struct net_bridge_port *p;
+ struct br_mdb_entry *entry;
+ struct br_ip group;
+};
#endif
/* net_bridge_mcast_port must be always defined due to forwarding stubs */