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 typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *); 10 11 extern int __rtnl_register(int protocol, int msgtype, 12 rtnl_doit_func, rtnl_dumpit_func, 13 rtnl_calcit_func); 14 extern void rtnl_register(int protocol, int msgtype, 15 rtnl_doit_func, rtnl_dumpit_func, 16 rtnl_calcit_func); 17 extern int rtnl_unregister(int protocol, int msgtype); 18 extern void rtnl_unregister_all(int protocol); 19 20 static inline int rtnl_msg_family(const struct nlmsghdr *nlh) 21 { 22 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) 23 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family; 24 else 25 return AF_UNSPEC; 26 } 27 28 /** 29 * struct rtnl_link_ops - rtnetlink link operations 30 * 31 * @list: Used internally 32 * @kind: Identifier 33 * @maxtype: Highest device specific netlink attribute number 34 * @policy: Netlink policy for device specific attribute validation 35 * @validate: Optional validation function for netlink/changelink parameters 36 * @priv_size: sizeof net_device private space 37 * @setup: net_device setup function 38 * @newlink: Function for configuring and registering a new device 39 * @changelink: Function for changing parameters of an existing device 40 * @dellink: Function to remove a device 41 * @get_size: Function to calculate required room for dumping device 42 * specific netlink attributes 43 * @fill_info: Function to dump device specific netlink attributes 44 * @get_xstats_size: Function to calculate required room for dumping devic 45 * specific statistics 46 * @fill_xstats: Function to dump device specific statistics 47 */ 48 struct rtnl_link_ops { 49 struct list_head list; 50 51 const char *kind; 52 53 size_t priv_size; 54 void (*setup)(struct net_device *dev); 55 56 int maxtype; 57 const struct nla_policy *policy; 58 int (*validate)(struct nlattr *tb[], 59 struct nlattr *data[]); 60 61 int (*newlink)(struct net *src_net, 62 struct net_device *dev, 63 struct nlattr *tb[], 64 struct nlattr *data[]); 65 int (*changelink)(struct net_device *dev, 66 struct nlattr *tb[], 67 struct nlattr *data[]); 68 void (*dellink)(struct net_device *dev, 69 struct list_head *head); 70 71 size_t (*get_size)(const struct net_device *dev); 72 int (*fill_info)(struct sk_buff *skb, 73 const struct net_device *dev); 74 75 size_t (*get_xstats_size)(const struct net_device *dev); 76 int (*fill_xstats)(struct sk_buff *skb, 77 const struct net_device *dev); 78 int (*get_tx_queues)(struct net *net, struct nlattr *tb[], 79 unsigned int *tx_queues, 80 unsigned int *real_tx_queues); 81 }; 82 83 extern int __rtnl_link_register(struct rtnl_link_ops *ops); 84 extern void __rtnl_link_unregister(struct rtnl_link_ops *ops); 85 86 extern int rtnl_link_register(struct rtnl_link_ops *ops); 87 extern void rtnl_link_unregister(struct rtnl_link_ops *ops); 88 89 /** 90 * struct rtnl_af_ops - rtnetlink address family operations 91 * 92 * @list: Used internally 93 * @family: Address family 94 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family 95 * specific netlink attributes. 96 * @get_link_af_size: Function to calculate size of address family specific 97 * netlink attributes exlusive the container attribute. 98 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr 99 * for invalid configuration settings. 100 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify 101 * net_device accordingly. 102 */ 103 struct rtnl_af_ops { 104 struct list_head list; 105 int family; 106 107 int (*fill_link_af)(struct sk_buff *skb, 108 const struct net_device *dev); 109 size_t (*get_link_af_size)(const struct net_device *dev); 110 111 int (*validate_link_af)(const struct net_device *dev, 112 const struct nlattr *attr); 113 int (*set_link_af)(struct net_device *dev, 114 const struct nlattr *attr); 115 }; 116 117 extern int __rtnl_af_register(struct rtnl_af_ops *ops); 118 extern void __rtnl_af_unregister(struct rtnl_af_ops *ops); 119 120 extern int rtnl_af_register(struct rtnl_af_ops *ops); 121 extern void rtnl_af_unregister(struct rtnl_af_ops *ops); 122 123 124 extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); 125 extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net, 126 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]); 127 extern int rtnl_configure_link(struct net_device *dev, 128 const struct ifinfomsg *ifm); 129 extern const struct nla_policy ifla_policy[IFLA_MAX+1]; 130 131 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) 132 133 #endif 134