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- /* 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 */
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