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 *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
  80extern int      __rtnl_link_register(struct rtnl_link_ops *ops);
  81extern void     __rtnl_link_unregister(struct rtnl_link_ops *ops);
  82
  83extern int      rtnl_link_register(struct rtnl_link_ops *ops);
  84extern void     rtnl_link_unregister(struct rtnl_link_ops *ops);
  85
  86/**
  87 *      struct rtnl_af_ops - rtnetlink address family operations
  88 *
  89 *      @list: Used internally
  90 *      @family: Address family
  91 *      @fill_link_af: Function to fill IFLA_AF_SPEC with address family
  92 *                     specific netlink attributes.
  93 *      @get_link_af_size: Function to calculate size of address family specific
  94 *                         netlink attributes exlusive the container attribute.
  95 *      @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
  96 *                         for invalid configuration settings.
  97 *      @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
  98 *                    net_device accordingly.
  99 */
 100struct rtnl_af_ops {
 101        struct list_head        list;
 102        int                     family;
 103
 104        int                     (*fill_link_af)(struct sk_buff *skb,
 105                                                const struct net_device *dev);
 106        size_t                  (*get_link_af_size)(const struct net_device *dev);
 107
 108        int                     (*validate_link_af)(const struct net_device *dev,
 109                                                    const struct nlattr *attr);
 110        int                     (*set_link_af)(struct net_device *dev,
 111                                               const struct nlattr *attr);
 112};
 113
 114extern int      __rtnl_af_register(struct rtnl_af_ops *ops);
 115extern void     __rtnl_af_unregister(struct rtnl_af_ops *ops);
 116
 117extern int      rtnl_af_register(struct rtnl_af_ops *ops);
 118extern void     rtnl_af_unregister(struct rtnl_af_ops *ops);
 119
 120
 121extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
 122extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
 123        char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
 124extern int rtnl_configure_link(struct net_device *dev,
 125                               const struct ifinfomsg *ifm);
 126extern const struct nla_policy ifla_policy[IFLA_MAX+1];
 127
 128#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
 129
 130#endif
 131