| #ifndef __LIBNETLINK_H__ |
| #define __LIBNETLINK_H__ 1 |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <asm/types.h> |
| #include <linux/netlink.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/if_link.h> |
| #include <linux/if_addr.h> |
| #include <linux/neighbour.h> |
| #include <linux/netconf.h> |
| #include <arpa/inet.h> |
| |
| struct rtnl_handle { |
| int fd; |
| struct sockaddr_nl local; |
| struct sockaddr_nl peer; |
| __u32 seq; |
| __u32 dump; |
| int proto; |
| FILE *dump_fp; |
| #define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 |
| int flags; |
| }; |
| |
| extern int rcvbuf; |
| |
| int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions) |
| __attribute__((warn_unused_result)); |
| |
| int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions, |
| int protocol) |
| __attribute__((warn_unused_result)); |
| |
| void rtnl_close(struct rtnl_handle *rth); |
| int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) |
| __attribute__((warn_unused_result)); |
| int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type, |
| __u32 filt_mask) |
| __attribute__((warn_unused_result)); |
| |
| typedef int (*req_filter_fn_t)(struct nlmsghdr *nlh, int reqlen); |
| |
| int rtnl_wilddump_req_filter_fn(struct rtnl_handle *rth, int fam, int type, |
| req_filter_fn_t fn) |
| __attribute__((warn_unused_result)); |
| int rtnl_wilddump_stats_req_filter(struct rtnl_handle *rth, int fam, int type, |
| __u32 filt_mask) |
| __attribute__((warn_unused_result)); |
| int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, |
| int len) |
| __attribute__((warn_unused_result)); |
| int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n) |
| __attribute__((warn_unused_result)); |
| |
| struct rtnl_ctrl_data { |
| int nsid; |
| }; |
| |
| typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
| struct nlmsghdr *n, void *); |
| |
| typedef int (*rtnl_listen_filter_t)(const struct sockaddr_nl *, |
| struct rtnl_ctrl_data *, |
| struct nlmsghdr *n, void *); |
| |
| struct rtnl_dump_filter_arg { |
| rtnl_filter_t filter; |
| void *arg1; |
| __u16 nc_flags; |
| }; |
| |
| int rtnl_dump_filter_l(struct rtnl_handle *rth, |
| const struct rtnl_dump_filter_arg *arg); |
| int rtnl_dump_filter_nc(struct rtnl_handle *rth, |
| rtnl_filter_t filter, |
| void *arg, __u16 nc_flags); |
| #define rtnl_dump_filter(rth, filter, arg) \ |
| rtnl_dump_filter_nc(rth, filter, arg, 0) |
| int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, |
| struct nlmsghdr *answer, size_t len) |
| __attribute__((warn_unused_result)); |
| int rtnl_send(struct rtnl_handle *rth, const void *buf, int) |
| __attribute__((warn_unused_result)); |
| int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int) |
| __attribute__((warn_unused_result)); |
| |
| int addattr(struct nlmsghdr *n, int maxlen, int type); |
| int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); |
| int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); |
| int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); |
| int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); |
| int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); |
| |
| int addattr_l(struct nlmsghdr *n, int maxlen, int type, |
| const void *data, int alen); |
| int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); |
| struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); |
| int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); |
| struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, |
| const void *data, int len); |
| int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); |
| int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data); |
| int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data); |
| int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); |
| int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data); |
| int rta_addattr_l(struct rtattr *rta, int maxlen, int type, |
| const void *data, int alen); |
| |
| int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
| int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta, |
| int len, unsigned short flags); |
| int parse_rtattr_byindex(struct rtattr *tb[], int max, |
| struct rtattr *rta, int len); |
| struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len); |
| int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
| |
| struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type); |
| int rta_nest_end(struct rtattr *rta, struct rtattr *nest); |
| |
| #define RTA_TAIL(rta) \ |
| ((struct rtattr *) (((void *) (rta)) + \ |
| RTA_ALIGN((rta)->rta_len))) |
| |
| #define parse_rtattr_nested(tb, max, rta) \ |
| (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) |
| |
| #define parse_rtattr_one_nested(type, rta) \ |
| (parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta))) |
| |
| #define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
| ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
| __parse_rtattr_nested_compat(tb, max, rta, len); }) |
| |
| static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
| { |
| return *(__u8 *)RTA_DATA(rta); |
| } |
| static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
| { |
| return *(__u16 *)RTA_DATA(rta); |
| } |
| static inline __be16 rta_getattr_be16(const struct rtattr *rta) |
| { |
| return ntohs(rta_getattr_u16(rta)); |
| } |
| static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
| { |
| return *(__u32 *)RTA_DATA(rta); |
| } |
| static inline __be32 rta_getattr_be32(const struct rtattr *rta) |
| { |
| return ntohl(rta_getattr_u32(rta)); |
| } |
| static inline __u64 rta_getattr_u64(const struct rtattr *rta) |
| { |
| __u64 tmp; |
| |
| memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); |
| return tmp; |
| } |
| static inline const char *rta_getattr_str(const struct rtattr *rta) |
| { |
| return (const char *)RTA_DATA(rta); |
| } |
| |
| int rtnl_listen_all_nsid(struct rtnl_handle *); |
| int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler, |
| void *jarg); |
| int rtnl_from_file(FILE *, rtnl_listen_filter_t handler, |
| void *jarg); |
| |
| #define NLMSG_TAIL(nmsg) \ |
| ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) |
| |
| #ifndef IFA_RTA |
| #define IFA_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
| #endif |
| #ifndef IFA_PAYLOAD |
| #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg)) |
| #endif |
| |
| #ifndef IFLA_RTA |
| #define IFLA_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) |
| #endif |
| #ifndef IFLA_PAYLOAD |
| #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifinfomsg)) |
| #endif |
| |
| #ifndef NDA_RTA |
| #define NDA_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) |
| #endif |
| #ifndef NDA_PAYLOAD |
| #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndmsg)) |
| #endif |
| |
| #ifndef NDTA_RTA |
| #define NDTA_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) |
| #endif |
| #ifndef NDTA_PAYLOAD |
| #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndtmsg)) |
| #endif |
| |
| #ifndef NETNS_RTA |
| #define NETNS_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg)))) |
| #endif |
| #ifndef NETNS_PAYLOAD |
| #define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct rtgenmsg)) |
| #endif |
| |
| #ifndef IFLA_STATS_RTA |
| #define IFLA_STATS_RTA(r) \ |
| ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct if_stats_msg)))) |
| #endif |
| |
| /* User defined nlmsg_type which is used mostly for logging netlink |
| * messages from dump file */ |
| #define NLMSG_TSTAMP 15 |
| |
| #endif /* __LIBNETLINK_H__ */ |