/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef NETLINK_HELPERS_H #define NETLINK_HELPERS_H #include <string.h> #include <linux/netlink.h> #include <linux/rtnetlink.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 #define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02 #define RTNL_HANDLE_F_STRICT_CHK 0x04 int flags; }; #define NLMSG_TAIL(nmsg) \ ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off, const struct nlmsghdr *inner_nlh); int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions) __attribute__((warn_unused_result)); void rtnl_close(struct rtnl_handle *rth); int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, struct nlmsghdr **answer) __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); #endif /* NETLINK_HELPERS_H */