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-rw-r--r--include/linux/netdevice.h10
-rw-r--r--net/bridge/br_device.c2
-rw-r--r--net/bridge/br_netlink.c73
-rw-r--r--net/bridge/br_private.h3
-rw-r--r--net/core/rtnetlink.c80
5 files changed, 108 insertions, 60 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f8eda0276f03..7bf867c97043 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -887,6 +887,10 @@ struct netdev_fcoe_hbainfo {
* struct net_device *dev, int idx)
* Used to add FDB entries to dump requests. Implementers should add
* entries to skb and update idx with the number of entries.
+ *
+ * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh)
+ * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq,
+ * struct net_device *dev)
*/
struct net_device_ops {
int (*ndo_init)(struct net_device *dev);
@@ -998,6 +1002,12 @@ struct net_device_ops {
struct netlink_callback *cb,
struct net_device *dev,
int idx);
+
+ int (*ndo_bridge_setlink)(struct net_device *dev,
+ struct nlmsghdr *nlh);
+ int (*ndo_bridge_getlink)(struct sk_buff *skb,
+ u32 pid, u32 seq,
+ struct net_device *dev);
};
/*
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 070e8a68cfc6..63b5b088e80f 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -313,6 +313,8 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_fdb_add = br_fdb_add,
.ndo_fdb_del = br_fdb_delete,
.ndo_fdb_dump = br_fdb_dump,
+ .ndo_bridge_getlink = br_getlink,
+ .ndo_bridge_setlink = br_setlink,
};
static void br_dev_free(struct net_device *dev)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 093f527276a3..743511bb7319 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -111,54 +111,33 @@ errout:
/*
* Dump information about all ports, in response to GETLINK
*/
-static int br_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
+int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
+ struct net_device *dev)
{
- struct net *net = sock_net(skb->sk);
- struct net_device *dev;
- int idx;
-
- idx = 0;
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- struct net_bridge_port *port = br_port_get_rcu(dev);
-
- /* not a bridge port */
- if (!port || idx < cb->args[0])
- goto skip;
-
- if (br_fill_ifinfo(skb, port,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, RTM_NEWLINK,
- NLM_F_MULTI) < 0)
- break;
-skip:
- ++idx;
- }
- rcu_read_unlock();
- cb->args[0] = idx;
+ int err = 0;
+ struct net_bridge_port *port = br_port_get_rcu(dev);
+
+ /* not a bridge port */
+ if (!port)
+ goto out;
- return skb->len;
+ err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI);
+out:
+ return err;
}
/*
* Change state of port (ie from forwarding to blocking etc)
* Used by spanning tree in user space.
*/
-static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
{
- struct net *net = sock_net(skb->sk);
struct ifinfomsg *ifm;
struct nlattr *protinfo;
- struct net_device *dev;
struct net_bridge_port *p;
u8 new_state;
- if (nlmsg_len(nlh) < sizeof(*ifm))
- return -EINVAL;
-
ifm = nlmsg_data(nlh);
- if (ifm->ifi_family != AF_BRIDGE)
- return -EPFNOSUPPORT;
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
if (!protinfo || nla_len(protinfo) < sizeof(u8))
@@ -168,10 +147,6 @@ static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
if (new_state > BR_STATE_BLOCKING)
return -EINVAL;
- dev = __dev_get_by_index(net, ifm->ifi_index);
- if (!dev)
- return -ENODEV;
-
p = br_port_get_rtnl(dev);
if (!p)
return -EINVAL;
@@ -218,29 +193,7 @@ struct rtnl_link_ops br_link_ops __read_mostly = {
int __init br_netlink_init(void)
{
- int err;
-
- err = rtnl_link_register(&br_link_ops);
- if (err < 0)
- goto err1;
-
- err = __rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL,
- br_dump_ifinfo, NULL);
- if (err)
- goto err2;
- err = __rtnl_register(PF_BRIDGE, RTM_SETLINK,
- br_rtm_setlink, NULL, NULL);
- if (err)
- goto err3;
-
- return 0;
-
-err3:
- rtnl_unregister_all(PF_BRIDGE);
-err2:
- rtnl_link_unregister(&br_link_ops);
-err1:
- return err;
+ return rtnl_link_register(&br_link_ops);
}
void __exit br_netlink_fini(void)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 9b278c4ebee1..fdcd5f626ca6 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -553,6 +553,9 @@ extern struct rtnl_link_ops br_link_ops;
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_getlink(struct sk_buff *skb, u32 pid, u32 seq,
+ struct net_device *dev);
#ifdef CONFIG_SYSFS
/* br_sysfs_if.c */
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 64fe3cca2a4e..a068666b322f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2252,6 +2252,83 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
+static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct net *net = sock_net(skb->sk);
+ struct net_device *dev;
+ int idx = 0;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ u32 seq = cb->nlh->nlmsg_seq;
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev) {
+ const struct net_device_ops *ops = dev->netdev_ops;
+ struct net_device *master = dev->master;
+
+ if (idx < cb->args[0])
+ continue;
+
+ if (master && master->netdev_ops->ndo_bridge_getlink) {
+ const struct net_device_ops *bops = master->netdev_ops;
+ int err = bops->ndo_bridge_getlink(skb, portid,
+ seq, dev);
+
+ if (err < 0)
+ break;
+ else
+ idx++;
+ }
+
+ if (ops->ndo_bridge_getlink) {
+ int err = ops->ndo_bridge_getlink(skb, portid,
+ seq, dev);
+
+ if (err < 0)
+ break;
+ else
+ idx++;
+ }
+ }
+ rcu_read_unlock();
+ cb->args[0] = idx;
+
+ return skb->len;
+}
+
+static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
+ void *arg)
+{
+ struct net *net = sock_net(skb->sk);
+ struct ifinfomsg *ifm;
+ struct net_device *dev;
+ int err = -EINVAL;
+
+ if (nlmsg_len(nlh) < sizeof(*ifm))
+ return -EINVAL;
+
+ ifm = nlmsg_data(nlh);
+ if (ifm->ifi_family != AF_BRIDGE)
+ return -EPFNOSUPPORT;
+
+ dev = __dev_get_by_index(net, ifm->ifi_index);
+ if (!dev) {
+ pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
+ return -ENODEV;
+ }
+
+ if (dev->master && dev->master->netdev_ops->ndo_bridge_setlink) {
+ err = dev->master->netdev_ops->ndo_bridge_setlink(dev, nlh);
+ if (err)
+ goto out;
+ }
+
+ if (dev->netdev_ops->ndo_bridge_setlink)
+ err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh);
+
+out:
+ return err;
+}
+
/* Protected by RTNL sempahore. */
static struct rtattr **rta_buf;
static int rtattr_max;
@@ -2433,5 +2510,8 @@ void __init rtnetlink_init(void)
rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL);
rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL);
rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL);
+
+ rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL);
+ rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 19:11:37 +0000