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 *); 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 int __rtnl_register(int protocol, int msgtype, 12 rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func); 13 void rtnl_register(int protocol, int msgtype, 14 rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func); 15 int rtnl_unregister(int protocol, int msgtype); 16 void rtnl_unregister_all(int protocol); 17 18 static 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 */ 50 struct 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 98 int __rtnl_link_register(struct rtnl_link_ops *ops); 99 void __rtnl_link_unregister(struct rtnl_link_ops *ops); 100 101 int rtnl_link_register(struct rtnl_link_ops *ops); 102 void 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 */ 118 struct 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 }; 131 132 void __rtnl_af_unregister(struct rtnl_af_ops *ops); 133 134 void rtnl_af_register(struct rtnl_af_ops *ops); 135 void rtnl_af_unregister(struct rtnl_af_ops *ops); 136 137 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); 138 struct 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[]); 142 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm); 143 144 int 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