diff options
Diffstat (limited to 'net/bridge/br_netlink.c')
| -rw-r--r-- | net/bridge/br_netlink.c | 57 |
1 files changed, 48 insertions, 9 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index fb7d5a7..134a2ff 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -12,9 +12,11 @@ #include <linux/kernel.h> #include <linux/slab.h> +#include <linux/etherdevice.h> #include <net/rtnetlink.h> #include <net/net_namespace.h> #include <net/sock.h> + #include "br_private.h" static inline size_t br_nlmsg_size(void) @@ -188,24 +190,61 @@ static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) return 0; } +static int br_validate(struct nlattr *tb[], struct nlattr *data[]) +{ + if (tb[IFLA_ADDRESS]) { + if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) + return -EINVAL; + if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) + return -EADDRNOTAVAIL; + } + + return 0; +} + +static struct rtnl_link_ops br_link_ops __read_mostly = { + .kind = "bridge", + .priv_size = sizeof(struct net_bridge), + .setup = br_dev_setup, + .validate = br_validate, +}; int __init br_netlink_init(void) { - if (__rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, br_dump_ifinfo)) - return -ENOBUFS; - - /* Only the first call to __rtnl_register can fail */ - __rtnl_register(PF_BRIDGE, RTM_SETLINK, br_rtm_setlink, NULL); + int err; - __rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, br_fdb_add, NULL); - __rtnl_register(PF_BRIDGE, RTM_DELNEIGH, br_fdb_delete, NULL); - __rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, br_fdb_dump); + err = rtnl_link_register(&br_link_ops); + if (err < 0) + goto err1; + + err = __rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, br_dump_ifinfo); + if (err) + goto err2; + err = __rtnl_register(PF_BRIDGE, RTM_SETLINK, br_rtm_setlink, NULL); + if (err) + goto err3; + err = __rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, br_fdb_add, NULL); + if (err) + goto err3; + err = __rtnl_register(PF_BRIDGE, RTM_DELNEIGH, br_fdb_delete, NULL); + if (err) + goto err3; + err = __rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, br_fdb_dump); + if (err) + goto err3; return 0; + +err3: + rtnl_unregister_all(PF_BRIDGE); +err2: + rtnl_link_unregister(&br_link_ops); +err1: + return err; } void __exit br_netlink_fini(void) { + rtnl_link_unregister(&br_link_ops); rtnl_unregister_all(PF_BRIDGE); } - |