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 */
  50struct rtnl_link_ops {
  51        struct list_head        list;
  52
  53        const char              *kind;
  54
  55        size_t                  priv_size;
  56        void                    (*setup)(struct net_device *dev);
  57
  58        int                     maxtype;
  59        const struct nla_policy *policy;
  60        int                     (*validate)(struct nlattr *tb[],
  61                                            struct nlattr *data[]);
  62
  63        int                     (*newlink)(struct net *src_net,
  64                                           struct net_device *dev,
  65                                           struct nlattr *tb[],
  66                                           struct nlattr *data[]);
  67        int                     (*changelink)(struct net_device *dev,
  68                                              struct nlattr *tb[],
  69                                              struct nlattr *data[]);
  70        void                    (*dellink)(struct net_device *dev,
  71                                           struct list_head *head);
  72
  73        size_t                  (*get_size)(const struct net_device *dev);
  74        int                     (*fill_info)(struct sk_buff *skb,
  75                                             const struct net_device *dev);
  76
  77        size_t                  (*get_xstats_size)(const struct net_device *dev);
  78        int                     (*fill_xstats)(struct sk_buff *skb,
  79                                               const struct net_device *dev);
  80        unsigned int            (*get_num_tx_queues)(void);
  81        unsigned int            (*get_num_rx_queues)(void);
  82
  83        int                     slave_maxtype;
  84        const struct nla_policy *slave_policy;
  85        int                     (*slave_validate)(struct nlattr *tb[],
  86                                                  struct nlattr *data[]);
  87        int                     (*slave_changelink)(struct net_device *dev,
  88                                                    struct net_device *slave_dev,
  89                                                    struct nlattr *tb[],
  90                                                    struct nlattr *data[]);
  91        size_t                  (*get_slave_size)(const struct net_device *dev,
  92                                                  const struct net_device *slave_dev);
  93        int                     (*fill_slave_info)(struct sk_buff *skb,
  94                                                   const struct net_device *dev,
  95                                                   const struct net_device *slave_dev);
  96};
  97
  98int __rtnl_link_register(struct rtnl_link_ops *ops);
  99void __rtnl_link_unregister(struct rtnl_link_ops *ops);
 100
 101int rtnl_link_register(struct rtnl_link_ops *ops);
 102void rtnl_link_unregister(struct rtnl_link_ops *ops);
 103
 104/**
 105 *      struct rtnl_af_ops - rtnetlink address family operations
 106 *
 107 *      @list: Used internally
 108 *      @family: Address family
 109 *      @fill_link_af: Function to fill IFLA_AF_SPEC with address family
 110 *                     specific netlink attributes.
 111 *      @get_link_af_size: Function to calculate size of address family specific
 112 *                         netlink attributes.
 113 *      @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
 114 *                         for invalid configuration settings.
 115 *      @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
 116 *                    net_device accordingly.
 117 */
 118struct rtnl_af_ops {
 119        struct list_head        list;
 120        int                     family;
 121
 122        int                     (*fill_link_af)(struct sk_buff *skb,
 123                                                const struct net_device *dev);
 124        size_t                  (*get_link_af_size)(const struct net_device *dev);
 125
 126        int                     (*validate_link_af)(const struct net_device *dev,
 127                                                    const struct nlattr *attr);
 128        int                     (*set_link_af)(struct net_device *dev,
 129                                               const struct nlattr *attr);
 130};
 131
 132void __rtnl_af_unregister(struct rtnl_af_ops *ops);
 133
 134void rtnl_af_register(struct rtnl_af_ops *ops);
 135void rtnl_af_unregister(struct rtnl_af_ops *ops);
 136
 137struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
 138struct net_device *rtnl_create_link(struct net *net, char *ifname,
 139                                    unsigned char name_assign_type,
 140                                    const struct rtnl_link_ops *ops,
 141                                    struct nlattr *tb[]);
 142int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
 143
 144int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
 145
 146#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
 147
 148#endif
 149