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 *);
   8typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
   9typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
  10
  11int __rtnl_register(int protocol, int msgtype,
  12                    rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
  13void rtnl_register(int protocol, int msgtype,
  14                   rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
  15int rtnl_unregister(int protocol, int msgtype);
  16void rtnl_unregister_all(int protocol);
  17
  18static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
  19{
  20        if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
  21                return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
  22        else
  23                return AF_UNSPEC;
  24}
  25
  26/**
  27 *      struct rtnl_link_ops - rtnetlink link operations
  28 *
  29 *      @list: Used internally
  30 *      @kind: Identifier
  31 *      @maxtype: Highest device specific netlink attribute number
  32 *      @policy: Netlink policy for device specific attribute validation
  33 *      @validate: Optional validation function for netlink/changelink parameters
  34 *      @priv_size: sizeof net_device private space
  35 *      @setup: net_device setup function
  36 *      @newlink: Function for configuring and registering a new device
  37 *      @changelink: Function for changing parameters of an existing device
  38 *      @dellink: Function to remove a device
  39 *      @get_size: Function to calculate required room for dumping device
  40 *                 specific netlink attributes
  41 *      @fill_info: Function to dump device specific netlink attributes
  42 *      @get_xstats_size: Function to calculate required room for dumping device
  43 *                        specific statistics
  44 *      @fill_xstats: Function to dump device specific statistics
  45 *      @get_num_tx_queues: Function to determine number of transmit queues
  46 *                          to create when creating a new device.
  47 *      @get_num_rx_queues: Function to determine number of receive queues
  48 *                          to create when creating a new device.
  49 *      @get_link_net: Function to get the i/o netns of the device
  50 */
  51struct rtnl_link_ops {
  52        struct list_head        list;
  53
  54        const char              *kind;
  55
  56        size_t                  priv_size;
  57        void                    (*setup)(struct net_device *dev);
  58
  59        int                     maxtype;
  60        const struct nla_policy *policy;
  61        int                     (*validate)(struct nlattr *tb[],
  62                                            struct nlattr *data[]);
  63
  64        int                     (*newlink)(struct net *src_net,
  65                                           struct net_device *dev,
  66                                           struct nlattr *tb[],
  67                                           struct nlattr *data[]);
  68        int                     (*changelink)(struct net_device *dev,
  69                                              struct nlattr *tb[],
  70                                              struct nlattr *data[]);
  71        void                    (*dellink)(struct net_device *dev,
  72                                           struct list_head *head);
  73
  74        size_t                  (*get_size)(const struct net_device *dev);
  75        int                     (*fill_info)(struct sk_buff *skb,
  76                                             const struct net_device *dev);
  77
  78        size_t                  (*get_xstats_size)(const struct net_device *dev);
  79        int                     (*fill_xstats)(struct sk_buff *skb,
  80                                               const struct net_device *dev);
  81        unsigned int            (*get_num_tx_queues)(void);
  82        unsigned int            (*get_num_rx_queues)(void);
  83
  84        int                     slave_maxtype;
  85        const struct nla_policy *slave_policy;
  86        int                     (*slave_validate)(struct nlattr *tb[],
  87                                                  struct nlattr *data[]);
  88        int                     (*slave_changelink)(struct net_device *dev,
  89                                                    struct net_device *slave_dev,
  90                                                    struct nlattr *tb[],
  91                                                    struct nlattr *data[]);
  92        size_t                  (*get_slave_size)(const struct net_device *dev,
  93                                                  const struct net_device *slave_dev);
  94        int                     (*fill_slave_info)(struct sk_buff *skb,
  95                                                   const struct net_device *dev,
  96                                                   const struct net_device *slave_dev);
  97        struct net              *(*get_link_net)(const struct net_device *dev);
  98};
  99
 100int __rtnl_link_register(struct rtnl_link_ops *ops);
 101void __rtnl_link_unregister(struct rtnl_link_ops *ops);
 102
 103int rtnl_link_register(struct rtnl_link_ops *ops);
 104void rtnl_link_unregister(struct rtnl_link_ops *ops);
 105
 106/**
 107 *      struct rtnl_af_ops - rtnetlink address family operations
 108 *
 109 *      @list: Used internally
 110 *      @family: Address family
 111 *      @fill_link_af: Function to fill IFLA_AF_SPEC with address family
 112 *                     specific netlink attributes.
 113 *      @get_link_af_size: Function to calculate size of address family specific
 114 *                         netlink attributes.
 115 *      @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
 116 *                         for invalid configuration settings.
 117 *      @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
 118 *                    net_device accordingly.
 119 */
 120struct rtnl_af_ops {
 121        struct list_head        list;
 122        int                     family;
 123
 124        int                     (*fill_link_af)(struct sk_buff *skb,
 125                                                const struct net_device *dev);
 126        size_t                  (*get_link_af_size)(const struct net_device *dev);
 127
 128        int                     (*validate_link_af)(const struct net_device *dev,
 129                                                    const struct nlattr *attr);
 130        int                     (*set_link_af)(struct net_device *dev,
 131                                               const struct nlattr *attr);
 132};
 133
 134void __rtnl_af_unregister(struct rtnl_af_ops *ops);
 135
 136void rtnl_af_register(struct rtnl_af_ops *ops);
 137void rtnl_af_unregister(struct rtnl_af_ops *ops);
 138
 139struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
 140struct net_device *rtnl_create_link(struct net *net, const char *ifname,
 141                                    unsigned char name_assign_type,
 142                                    const struct rtnl_link_ops *ops,
 143                                    struct nlattr *tb[]);
 144int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
 145
 146int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
 147
 148#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
 149
 150#endif
 151