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 * @get_link_net: Function to get the i/o netns of the device 50 */ 51 struct 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 }; 99 100 int __rtnl_link_register(struct rtnl_link_ops *ops); 101 void __rtnl_link_unregister(struct rtnl_link_ops *ops); 102 103 int rtnl_link_register(struct rtnl_link_ops *ops); 104 void 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 */ 120 struct 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 }; 133 134 void __rtnl_af_unregister(struct rtnl_af_ops *ops); 135 136 void rtnl_af_register(struct rtnl_af_ops *ops); 137 void rtnl_af_unregister(struct rtnl_af_ops *ops); 138 139 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); 140 struct 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[]); 144 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm); 145 146 int 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