47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef NETLINK_HELPERS_H
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#define NETLINK_HELPERS_H
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#include <string.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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struct rtnl_handle {
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int fd;
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struct sockaddr_nl local;
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struct sockaddr_nl peer;
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__u32 seq;
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__u32 dump;
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int proto;
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FILE *dump_fp;
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#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01
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#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02
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#define RTNL_HANDLE_F_STRICT_CHK 0x04
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int flags;
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};
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#define NLMSG_TAIL(nmsg) \
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((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
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typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off,
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const struct nlmsghdr *inner_nlh);
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int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions)
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__attribute__((warn_unused_result));
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void rtnl_close(struct rtnl_handle *rth);
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int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
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struct nlmsghdr **answer)
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__attribute__((warn_unused_result));
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int addattr(struct nlmsghdr *n, int maxlen, int type);
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int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
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int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
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int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
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int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
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int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data);
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int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);
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int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
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struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
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int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
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#endif /* NETLINK_HELPERS_H */
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