1 #ifndef __NET_RTNETLINK_H 2 #define __NET_RTNETLINK_H 3 4 #include <linux/rtnetlink.h> 5 #include <net/netlink.h> 6 7 typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *); 8 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *); 9 10 extern int __rtnl_register(int protocol, int msgtype, 11 rtnl_doit_func, rtnl_dumpit_func); 12 extern void rtnl_register(int protocol, int msgtype, 13 rtnl_doit_func, rtnl_dumpit_func); 14 extern int rtnl_unregister(int protocol, int msgtype); 15 extern void rtnl_unregister_all(int protocol); 16 17 static inline int rtnl_msg_family(const struct nlmsghdr *nlh) 18 { 19 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) 20 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family; 21 else 22 return AF_UNSPEC; 23 } 24 25 /** 26 * struct rtnl_link_ops - rtnetlink link operations 27 * 28 * @list: Used internally 29 * @kind: Identifier 30 * @maxtype: Highest device specific netlink attribute number 31 * @policy: Netlink policy for device specific attribute validation 32 * @validate: Optional validation function for netlink/changelink parameters 33 * @priv_size: sizeof net_device private space 34 * @setup: net_device setup function 35 * @newlink: Function for configuring and registering a new device 36 * @changelink: Function for changing parameters of an existing device 37 * @dellink: Function to remove a device 38 * @get_size: Function to calculate required room for dumping device 39 * specific netlink attributes 40 * @fill_info: Function to dump device specific netlink attributes 41 * @get_xstats_size: Function to calculate required room for dumping devic 42 * specific statistics 43 * @fill_xstats: Function to dump device specific statistics 44 */ 45 struct rtnl_link_ops { 46 struct list_head list; 47 48 const char *kind; 49 50 size_t priv_size; 51 void (*setup)(struct net_device *dev); 52 53 int maxtype; 54 const struct nla_policy *policy; 55 int (*validate)(struct nlattr *tb[], 56 struct nlattr *data[]); 57 58 int (*newlink)(struct net *src_net, 59 struct net_device *dev, 60 struct nlattr *tb[], 61 struct nlattr *data[]); 62 int (*changelink)(struct net_device *dev, 63 struct nlattr *tb[], 64 struct nlattr *data[]); 65 void (*dellink)(struct net_device *dev, 66 struct list_head *head); 67 68 size_t (*get_size)(const struct net_device *dev); 69 int (*fill_info)(struct sk_buff *skb, 70 const struct net_device *dev); 71 72 size_t (*get_xstats_size)(const struct net_device *dev); 73 int (*fill_xstats)(struct sk_buff *skb, 74 const struct net_device *dev); 75 int (*get_tx_queues)(struct net *net, struct nlattr *tb[], 76 unsigned int *tx_queues, 77 unsigned int *real_tx_queues); 78 }; 79 80 extern int __rtnl_link_register(struct rtnl_link_ops *ops); 81 extern void __rtnl_link_unregister(struct rtnl_link_ops *ops); 82 extern void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops); 83 84 extern int rtnl_link_register(struct rtnl_link_ops *ops); 85 extern void rtnl_link_unregister(struct rtnl_link_ops *ops); 86 87 extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); 88 extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net, 89 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]); 90 extern const struct nla_policy ifla_policy[IFLA_MAX+1]; 91 92 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) 93 94 #endif 95