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Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c107
1 files changed, 81 insertions, 26 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 1063996f8317..8d39071f32d7 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -299,7 +299,12 @@ int __rtnl_link_register(struct rtnl_link_ops *ops)
if (rtnl_link_ops_get(ops->kind))
return -EEXIST;
- if (!ops->dellink)
+ /* The check for setup is here because if ops
+ * does not have that filled up, it is not possible
+ * to use the ops for creating device. So do not
+ * fill up dellink as well. That disables rtnl_dellink.
+ */
+ if (ops->setup && !ops->dellink)
ops->dellink = unregister_netdevice_queue;
list_add_tail(&ops->list, &link_ops);
@@ -1777,7 +1782,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
return -ENODEV;
ops = dev->rtnl_link_ops;
- if (!ops)
+ if (!ops || !ops->dellink)
return -EOPNOTSUPP;
ops->dellink(dev, &list_kill);
@@ -1805,7 +1810,8 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
EXPORT_SYMBOL(rtnl_configure_link);
struct net_device *rtnl_create_link(struct net *net,
- char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[])
+ char *ifname, unsigned char name_assign_type,
+ const struct rtnl_link_ops *ops, struct nlattr *tb[])
{
int err;
struct net_device *dev;
@@ -1823,8 +1829,8 @@ struct net_device *rtnl_create_link(struct net *net,
num_rx_queues = ops->get_num_rx_queues();
err = -ENOMEM;
- dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup,
- num_tx_queues, num_rx_queues);
+ dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type,
+ ops->setup, num_tx_queues, num_rx_queues);
if (!dev)
goto err;
@@ -1889,6 +1895,7 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh)
char ifname[IFNAMSIZ];
struct nlattr *tb[IFLA_MAX+1];
struct nlattr *linkinfo[IFLA_INFO_MAX+1];
+ unsigned char name_assign_type = NET_NAME_USER;
int err;
#ifdef CONFIG_MODULES
@@ -2038,14 +2045,19 @@ replay:
return -EOPNOTSUPP;
}
- if (!ifname[0])
+ if (!ops->setup)
+ return -EOPNOTSUPP;
+
+ if (!ifname[0]) {
snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
+ name_assign_type = NET_NAME_ENUM;
+ }
dest_net = rtnl_link_get_net(net, tb);
if (IS_ERR(dest_net))
return PTR_ERR(dest_net);
- dev = rtnl_create_link(dest_net, ifname, ops, tb);
+ dev = rtnl_create_link(dest_net, ifname, name_assign_type, ops, tb);
if (IS_ERR(dev)) {
err = PTR_ERR(dev);
goto out;
@@ -2380,22 +2392,20 @@ int ndo_dflt_fdb_del(struct ndmsg *ndm,
struct net_device *dev,
const unsigned char *addr)
{
- int err = -EOPNOTSUPP;
+ int err = -EINVAL;
/* If aging addresses are supported device will need to
* implement its own handler for this.
*/
if (!(ndm->ndm_state & NUD_PERMANENT)) {
pr_info("%s: FDB only supports static addresses\n", dev->name);
- return -EINVAL;
+ return err;
}
if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
err = dev_uc_del(dev, addr);
else if (is_multicast_ether_addr(addr))
err = dev_mc_del(dev, addr);
- else
- err = -EINVAL;
return err;
}
@@ -2509,6 +2519,7 @@ skip:
int ndo_dflt_fdb_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct net_device *dev,
+ struct net_device *filter_dev,
int idx)
{
int err;
@@ -2526,28 +2537,72 @@ EXPORT_SYMBOL(ndo_dflt_fdb_dump);
static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
- int idx = 0;
- struct net *net = sock_net(skb->sk);
struct net_device *dev;
+ struct nlattr *tb[IFLA_MAX+1];
+ struct net_device *bdev = NULL;
+ struct net_device *br_dev = NULL;
+ const struct net_device_ops *ops = NULL;
+ const struct net_device_ops *cops = NULL;
+ struct ifinfomsg *ifm = nlmsg_data(cb->nlh);
+ struct net *net = sock_net(skb->sk);
+ int brport_idx = 0;
+ int br_idx = 0;
+ int idx = 0;
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (dev->priv_flags & IFF_BRIDGE_PORT) {
- struct net_device *br_dev;
- const struct net_device_ops *ops;
+ if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
+ ifla_policy) == 0) {
+ if (tb[IFLA_MASTER])
+ br_idx = nla_get_u32(tb[IFLA_MASTER]);
+ }
+
+ brport_idx = ifm->ifi_index;
- br_dev = netdev_master_upper_dev_get(dev);
- ops = br_dev->netdev_ops;
- if (ops->ndo_fdb_dump)
- idx = ops->ndo_fdb_dump(skb, cb, dev, idx);
+ if (br_idx) {
+ br_dev = __dev_get_by_index(net, br_idx);
+ if (!br_dev)
+ return -ENODEV;
+
+ ops = br_dev->netdev_ops;
+ bdev = br_dev;
+ }
+
+ for_each_netdev(net, dev) {
+ if (brport_idx && (dev->ifindex != brport_idx))
+ continue;
+
+ if (!br_idx) { /* user did not specify a specific bridge */
+ if (dev->priv_flags & IFF_BRIDGE_PORT) {
+ br_dev = netdev_master_upper_dev_get(dev);
+ cops = br_dev->netdev_ops;
+ }
+
+ bdev = dev;
+ } else {
+ if (dev != br_dev &&
+ !(dev->priv_flags & IFF_BRIDGE_PORT))
+ continue;
+
+ if (br_dev != netdev_master_upper_dev_get(dev) &&
+ !(dev->priv_flags & IFF_EBRIDGE))
+ continue;
+
+ bdev = br_dev;
+ cops = ops;
+ }
+
+ if (dev->priv_flags & IFF_BRIDGE_PORT) {
+ if (cops && cops->ndo_fdb_dump)
+ idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev,
+ idx);
}
+ idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx);
if (dev->netdev_ops->ndo_fdb_dump)
- idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx);
- else
- idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
+ idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, bdev, dev,
+ idx);
+
+ cops = NULL;
}
- rcu_read_unlock();
cb->args[0] = idx;
return skb->len;
generated by cgit (git 2.34.1) at 2024-05-24 11:23:16 +0000