return err;
}
-static int br_mdb_valid_dump_req(const struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
-{
- struct br_port_msg *bpm;
-
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) {
- NL_SET_ERR_MSG_MOD(extack, "Invalid header for mdb dump request");
- return -EINVAL;
- }
-
- bpm = nlmsg_data(nlh);
- if (bpm->ifindex) {
- NL_SET_ERR_MSG_MOD(extack, "Filtering by device index is not supported for mdb dump request");
- return -EINVAL;
- }
- if (nlmsg_attrlen(nlh, sizeof(*bpm))) {
- NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int br_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
-{
- struct net_device *dev;
- struct net *net = sock_net(skb->sk);
- struct nlmsghdr *nlh = NULL;
- int idx = 0, s_idx;
-
- if (cb->strict_check) {
- int err = br_mdb_valid_dump_req(cb->nlh, cb->extack);
-
- if (err < 0)
- return err;
- }
-
- s_idx = cb->args[0];
-
- rcu_read_lock();
-
- for_each_netdev_rcu(net, dev) {
- if (netif_is_bridge_master(dev)) {
- struct net_bridge *br = netdev_priv(dev);
- struct br_port_msg *bpm;
-
- if (idx < s_idx)
- goto skip;
-
- nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, RTM_GETMDB,
- sizeof(*bpm), NLM_F_MULTI);
- if (nlh == NULL)
- break;
-
- bpm = nlmsg_data(nlh);
- memset(bpm, 0, sizeof(*bpm));
- bpm->ifindex = dev->ifindex;
- if (br_mdb_fill_info(skb, cb, dev) < 0)
- goto out;
- if (br_rports_fill_info(skb, &br->multicast_ctx) < 0)
- goto out;
-
- cb->args[1] = 0;
- nlmsg_end(skb, nlh);
- skip:
- idx++;
- }
- }
-
-out:
- if (nlh)
- nlmsg_end(skb, nlh);
- rcu_read_unlock();
- cb->args[0] = idx;
- return skb->len;
-}
-
-int br_mdb_dump_new(struct net_device *dev, struct sk_buff *skb,
- struct netlink_callback *cb)
+int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
+ struct netlink_callback *cb)
{
struct net_bridge *br = netdev_priv(dev);
struct br_port_msg *bpm;
[MDBE_ATTR_RTPROT] = NLA_POLICY_MIN(NLA_U8, RTPROT_STATIC),
};
-static int validate_mdb_entry(const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct br_mdb_entry *entry = nla_data(attr);
-
- if (nla_len(attr) != sizeof(struct br_mdb_entry)) {
- NL_SET_ERR_MSG_MOD(extack, "Invalid MDBA_SET_ENTRY attribute length");
- return -EINVAL;
- }
-
- if (entry->ifindex == 0) {
- NL_SET_ERR_MSG_MOD(extack, "Zero entry ifindex is not allowed");
- return -EINVAL;
- }
-
- if (entry->addr.proto == htons(ETH_P_IP)) {
- if (!ipv4_is_multicast(entry->addr.u.ip4)) {
- NL_SET_ERR_MSG_MOD(extack, "IPv4 entry group address is not multicast");
- return -EINVAL;
- }
- if (ipv4_is_local_multicast(entry->addr.u.ip4)) {
- NL_SET_ERR_MSG_MOD(extack, "IPv4 entry group address is local multicast");
- return -EINVAL;
- }
-#if IS_ENABLED(CONFIG_IPV6)
- } else if (entry->addr.proto == htons(ETH_P_IPV6)) {
- if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6)) {
- NL_SET_ERR_MSG_MOD(extack, "IPv6 entry group address is link-local all nodes");
- return -EINVAL;
- }
-#endif
- } else if (entry->addr.proto == 0) {
- /* L2 mdb */
- if (!is_multicast_ether_addr(entry->addr.u.mac_addr)) {
- NL_SET_ERR_MSG_MOD(extack, "L2 entry group is not multicast");
- return -EINVAL;
- }
- } else {
- NL_SET_ERR_MSG_MOD(extack, "Unknown entry protocol");
- return -EINVAL;
- }
-
- if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) {
- NL_SET_ERR_MSG_MOD(extack, "Unknown entry state");
- return -EINVAL;
- }
- if (entry->vid >= VLAN_VID_MASK) {
- NL_SET_ERR_MSG_MOD(extack, "Invalid entry VLAN id");
- return -EINVAL;
- }
-
- return 0;
-}
-
static bool is_valid_mdb_source(struct nlattr *attr, __be16 proto,
struct netlink_ext_ack *extack)
{
return 0;
}
-static const struct nla_policy mdba_policy[MDBA_SET_ENTRY_MAX + 1] = {
- [MDBA_SET_ENTRY_UNSPEC] = { .strict_start_type = MDBA_SET_ENTRY_ATTRS + 1 },
- [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
- validate_mdb_entry,
- sizeof(struct br_mdb_entry)),
- [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED },
-};
-
-static int br_mdb_config_init(struct net *net, const struct nlmsghdr *nlh,
- struct br_mdb_config *cfg,
+static int br_mdb_config_init(struct br_mdb_config *cfg, struct net_device *dev,
+ struct nlattr *tb[], u16 nlmsg_flags,
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, mdba_policy, extack);
- if (err)
- return err;
+ struct net *net = dev_net(dev);
memset(cfg, 0, sizeof(*cfg));
cfg->filter_mode = MCAST_EXCLUDE;
cfg->rt_protocol = RTPROT_STATIC;
- cfg->nlflags = nlh->nlmsg_flags;
-
- 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->nlflags = nlmsg_flags;
cfg->br = netdev_priv(dev);
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;
- }
-
cfg->entry = nla_data(tb[MDBA_SET_ENTRY]);
if (cfg->entry->ifindex != cfg->br->dev->ifindex) {
br_mdb_config_src_list_fini(cfg);
}
-static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
+int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
+ struct netlink_ext_ack *extack)
{
- struct net *net = sock_net(skb->sk);
struct net_bridge_vlan_group *vg;
struct net_bridge_vlan *v;
struct br_mdb_config cfg;
int err;
- err = br_mdb_config_init(net, nlh, &cfg, extack);
+ err = br_mdb_config_init(&cfg, dev, tb, nlmsg_flags, extack);
if (err)
return err;
return err;
}
-int br_mdb_add_new(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
- struct netlink_ext_ack *extack)
-{
- struct net_bridge_vlan_group *vg;
- struct br_mdb_config cfg = {};
- struct net_bridge_vlan *v;
- int err;
-
- /* Configuration structure will be initialized here. */
-
- err = -EINVAL;
- /* host join errors which can happen before creating the group */
- if (!cfg.p && !br_group_is_l2(&cfg.group)) {
- /* don't allow any flags for host-joined IP groups */
- if (cfg.entry->state) {
- NL_SET_ERR_MSG_MOD(extack, "Flags are not allowed for host groups");
- goto out;
- }
- if (!br_multicast_is_star_g(&cfg.group)) {
- NL_SET_ERR_MSG_MOD(extack, "Groups with sources cannot be manually host joined");
- goto out;
- }
- }
-
- if (br_group_is_l2(&cfg.group) && cfg.entry->state != MDB_PERMANENT) {
- NL_SET_ERR_MSG_MOD(extack, "Only permanent L2 entries allowed");
- goto out;
- }
-
- if (cfg.p) {
- if (cfg.p->state == BR_STATE_DISABLED && cfg.entry->state != MDB_PERMANENT) {
- NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state and entry is not permanent");
- goto out;
- }
- vg = nbp_vlan_group(cfg.p);
- } else {
- vg = br_vlan_group(cfg.br);
- }
-
- /* If vlan filtering is enabled and VLAN is not specified
- * install mdb entry on all vlans configured on the port.
- */
- if (br_vlan_enabled(cfg.br->dev) && vg && cfg.entry->vid == 0) {
- list_for_each_entry(v, &vg->vlan_list, vlist) {
- cfg.entry->vid = v->vid;
- cfg.group.vid = v->vid;
- err = __br_mdb_add(&cfg, extack);
- if (err)
- break;
- }
- } else {
- err = __br_mdb_add(&cfg, extack);
- }
-
-out:
- br_mdb_config_fini(&cfg);
- return err;
-}
-
static int __br_mdb_del(const struct br_mdb_config *cfg)
{
struct br_mdb_entry *entry = cfg->entry;
return err;
}
-static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
+int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
+ struct netlink_ext_ack *extack)
{
- struct net *net = sock_net(skb->sk);
struct net_bridge_vlan_group *vg;
struct net_bridge_vlan *v;
struct br_mdb_config cfg;
int err;
- err = br_mdb_config_init(net, nlh, &cfg, extack);
+ err = br_mdb_config_init(&cfg, dev, tb, 0, extack);
if (err)
return err;
br_mdb_config_fini(&cfg);
return err;
}
-
-int br_mdb_del_new(struct net_device *dev, struct nlattr *tb[],
- struct netlink_ext_ack *extack)
-{
- struct net_bridge_vlan_group *vg;
- struct br_mdb_config cfg = {};
- struct net_bridge_vlan *v;
- int err = 0;
-
- /* Configuration structure will be initialized here. */
-
- if (cfg.p)
- vg = nbp_vlan_group(cfg.p);
- else
- vg = br_vlan_group(cfg.br);
-
- /* If vlan filtering is enabled and VLAN is not specified
- * delete mdb entry on all vlans configured on the port.
- */
- if (br_vlan_enabled(cfg.br->dev) && vg && cfg.entry->vid == 0) {
- list_for_each_entry(v, &vg->vlan_list, vlist) {
- cfg.entry->vid = v->vid;
- cfg.group.vid = v->vid;
- err = __br_mdb_del(&cfg);
- }
- } else {
- err = __br_mdb_del(&cfg);
- }
-
- br_mdb_config_fini(&cfg);
- return err;
-}
-
-void br_mdb_init(void)
-{
- rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETMDB, NULL, br_mdb_dump, 0);
- rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWMDB, br_mdb_add, NULL, 0);
- rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELMDB, br_mdb_del, NULL, 0);
-}
-
-void br_mdb_uninit(void)
-{
- rtnl_unregister(PF_BRIDGE, RTM_GETMDB);
- rtnl_unregister(PF_BRIDGE, RTM_NEWMDB);
- rtnl_unregister(PF_BRIDGE, RTM_DELMDB);
-}
u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
-int br_mdb_add_new(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
- struct netlink_ext_ack *extack);
-int br_mdb_del_new(struct net_device *dev, struct nlattr *tb[],
- struct netlink_ext_ack *extack);
-int br_mdb_dump_new(struct net_device *dev, struct sk_buff *skb,
- struct netlink_callback *cb);
-void br_mdb_init(void);
-void br_mdb_uninit(void);
+int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
+ struct netlink_ext_ack *extack);
+int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
+ struct netlink_ext_ack *extack);
+int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
+ struct netlink_callback *cb);
void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
struct net_bridge_mdb_entry *mp, bool notify);
void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
return false;
}
-static inline int br_mdb_add_new(struct net_device *dev, struct nlattr *tb[],
- u16 nlmsg_flags,
- struct netlink_ext_ack *extack)
+static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
+ u16 nlmsg_flags, struct netlink_ext_ack *extack)
{
return -EOPNOTSUPP;
}
-static inline int br_mdb_del_new(struct net_device *dev, struct nlattr *tb[],
- struct netlink_ext_ack *extack)
+static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
+ struct netlink_ext_ack *extack)
{
return -EOPNOTSUPP;
}
-static inline int br_mdb_dump_new(struct net_device *dev, struct sk_buff *skb,
- struct netlink_callback *cb)
+static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
+ struct netlink_callback *cb)
{
return 0;
}
-static inline void br_mdb_init(void)
-{
-}
-
-static inline void br_mdb_uninit(void)
-{
-}
-
static inline int br_mdb_hash_init(struct net_bridge *br)
{
return 0;
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/devlink.h>
+#if IS_ENABLED(CONFIG_IPV6)
+#include <net/addrconf.h>
+#endif
#include "dev.h"
return 0;
}
+static int rtnl_mdb_valid_dump_req(const struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct br_port_msg *bpm;
+
+ if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) {
+ NL_SET_ERR_MSG(extack, "Invalid header for mdb dump request");
+ return -EINVAL;
+ }
+
+ bpm = nlmsg_data(nlh);
+ if (bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Filtering by device index is not supported for mdb dump request");
+ return -EINVAL;
+ }
+ if (nlmsg_attrlen(nlh, sizeof(*bpm))) {
+ NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct rtnl_mdb_dump_ctx {
+ long idx;
+};
+
+static int rtnl_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct rtnl_mdb_dump_ctx *ctx = (void *)cb->ctx;
+ struct net *net = sock_net(skb->sk);
+ struct net_device *dev;
+ int idx, s_idx;
+ int err;
+
+ NL_ASSERT_DUMP_CTX_FITS(struct rtnl_mdb_dump_ctx);
+
+ if (cb->strict_check) {
+ err = rtnl_mdb_valid_dump_req(cb->nlh, cb->extack);
+ if (err)
+ return err;
+ }
+
+ s_idx = ctx->idx;
+ idx = 0;
+
+ for_each_netdev(net, dev) {
+ if (idx < s_idx)
+ goto skip;
+ if (!dev->netdev_ops->ndo_mdb_dump)
+ goto skip;
+
+ err = dev->netdev_ops->ndo_mdb_dump(dev, skb, cb);
+ if (err == -EMSGSIZE)
+ goto out;
+ /* Moving on to next device, reset markers and sequence
+ * counters since they are all maintained per-device.
+ */
+ memset(cb->ctx, 0, sizeof(cb->ctx));
+ cb->prev_seq = 0;
+ cb->seq = 0;
+skip:
+ idx++;
+ }
+
+out:
+ ctx->idx = idx;
+ return skb->len;
+}
+
+static int rtnl_validate_mdb_entry(const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct br_mdb_entry *entry = nla_data(attr);
+
+ if (nla_len(attr) != sizeof(struct br_mdb_entry)) {
+ NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length");
+ return -EINVAL;
+ }
+
+ if (entry->ifindex == 0) {
+ NL_SET_ERR_MSG(extack, "Zero entry ifindex is not allowed");
+ return -EINVAL;
+ }
+
+ if (entry->addr.proto == htons(ETH_P_IP)) {
+ if (!ipv4_is_multicast(entry->addr.u.ip4)) {
+ NL_SET_ERR_MSG(extack, "IPv4 entry group address is not multicast");
+ return -EINVAL;
+ }
+ if (ipv4_is_local_multicast(entry->addr.u.ip4)) {
+ NL_SET_ERR_MSG(extack, "IPv4 entry group address is local multicast");
+ return -EINVAL;
+ }
+#if IS_ENABLED(CONFIG_IPV6)
+ } else if (entry->addr.proto == htons(ETH_P_IPV6)) {
+ if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6)) {
+ NL_SET_ERR_MSG(extack, "IPv6 entry group address is link-local all nodes");
+ return -EINVAL;
+ }
+#endif
+ } else if (entry->addr.proto == 0) {
+ /* L2 mdb */
+ if (!is_multicast_ether_addr(entry->addr.u.mac_addr)) {
+ NL_SET_ERR_MSG(extack, "L2 entry group is not multicast");
+ return -EINVAL;
+ }
+ } else {
+ NL_SET_ERR_MSG(extack, "Unknown entry protocol");
+ return -EINVAL;
+ }
+
+ if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) {
+ NL_SET_ERR_MSG(extack, "Unknown entry state");
+ return -EINVAL;
+ }
+ if (entry->vid >= VLAN_VID_MASK) {
+ NL_SET_ERR_MSG(extack, "Invalid entry VLAN id");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct nla_policy mdba_policy[MDBA_SET_ENTRY_MAX + 1] = {
+ [MDBA_SET_ENTRY_UNSPEC] = { .strict_start_type = MDBA_SET_ENTRY_ATTRS + 1 },
+ [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
+ rtnl_validate_mdb_entry,
+ sizeof(struct br_mdb_entry)),
+ [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED },
+};
+
+static int rtnl_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
+ MDBA_SET_ENTRY_MAX, mdba_policy, extack);
+ if (err)
+ return err;
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) {
+ NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute");
+ return -EINVAL;
+ }
+
+ if (!dev->netdev_ops->ndo_mdb_add) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB operations");
+ return -EOPNOTSUPP;
+ }
+
+ return dev->netdev_ops->ndo_mdb_add(dev, tb, nlh->nlmsg_flags, extack);
+}
+
+static int rtnl_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
+ MDBA_SET_ENTRY_MAX, mdba_policy, extack);
+ if (err)
+ return err;
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) {
+ NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute");
+ return -EINVAL;
+ }
+
+ if (!dev->netdev_ops->ndo_mdb_del) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB operations");
+ return -EOPNOTSUPP;
+ }
+
+ return dev->netdev_ops->ndo_mdb_del(dev, tb, extack);
+}
+
/* Process one rtnetlink message. */
static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump,
0);
rtnl_register(PF_UNSPEC, RTM_SETSTATS, rtnl_stats_set, NULL, 0);
+
+ rtnl_register(PF_BRIDGE, RTM_GETMDB, NULL, rtnl_mdb_dump, 0);
+ rtnl_register(PF_BRIDGE, RTM_NEWMDB, rtnl_mdb_add, NULL, 0);
+ rtnl_register(PF_BRIDGE, RTM_DELMDB, rtnl_mdb_del, NULL, 0);
}