diff options
Diffstat (limited to 'net')
-rw-r--r-- | net/bridge/br_device.c | 2 | ||||
-rw-r--r-- | net/bridge/br_netlink.c | 73 | ||||
-rw-r--r-- | net/bridge/br_private.h | 3 | ||||
-rw-r--r-- | net/core/rtnetlink.c | 80 |
4 files changed, 98 insertions, 60 deletions
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); } |