LXR linux/include/net/rtnetlink.h

   1#ifndef __NET_RTNETLINK_H
   2#define __NET_RTNETLINK_H
   3
   4#include <linux/rtnetlink.h>
   5#include <net/netlink.h>
   6
   7typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
   8typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
   9
  10extern int      __rtnl_register(int protocol, int msgtype,
  11                                rtnl_doit_func, rtnl_dumpit_func);
  12extern void     rtnl_register(int protocol, int msgtype,
  13                              rtnl_doit_func, rtnl_dumpit_func);
  14extern int      rtnl_unregister(int protocol, int msgtype);
  15extern void     rtnl_unregister_all(int protocol);
  16
  17static 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 */
  45struct 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_device *dev,
  59                                           struct nlattr *tb[],
  60                                           struct nlattr *data[]);
  61        int                     (*changelink)(struct net_device *dev,
  62                                              struct nlattr *tb[],
  63                                              struct nlattr *data[]);
  64        void                    (*dellink)(struct net_device *dev);
  65
  66        size_t                  (*get_size)(const struct net_device *dev);
  67        int                     (*fill_info)(struct sk_buff *skb,
  68                                             const struct net_device *dev);
  69
  70        size_t                  (*get_xstats_size)(const struct net_device *dev);
  71        int                     (*fill_xstats)(struct sk_buff *skb,
  72                                               const struct net_device *dev);
  73        int                     (*get_tx_queues)(struct net *net, struct nlattr *tb[],
  74                                                 unsigned int *tx_queues,
  75                                                 unsigned int *real_tx_queues);
  76};
  77
  78extern int      __rtnl_link_register(struct rtnl_link_ops *ops);
  79extern void     __rtnl_link_unregister(struct rtnl_link_ops *ops);
  80extern void     rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops);
  81
  82extern int      rtnl_link_register(struct rtnl_link_ops *ops);
  83extern void     rtnl_link_unregister(struct rtnl_link_ops *ops);
  84
  85extern struct net_device *rtnl_create_link(struct net *net, char *ifname,
  86                const struct rtnl_link_ops *ops, struct nlattr *tb[]);
  87extern const struct nla_policy ifla_policy[IFLA_MAX+1];
  88
  89#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
  90
  91#endif
  92