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#ifndef NETLINK_ATTRIB_H
#define NETLINK_ATTRIB_H
#include <stdint.h> /* for uint32_t */
/*
* GRRR:
*
* GLIBC/Linux and MUSL/Linux define sockaddr_in et.al. in
* <netinet/in.h>, and the generic network code uses this.
* Unfortunately (cough) the Linux kernel headers also provide
* definitions of those structures in <linux/in.h> et.al. which,
* depending on header include order can result in conflicting
* definitions. For instance, if sockaddr_in is not defined,
* <linux/xfrm.h> will include the definition in <linux/in.h> but that
* will then clash with a later include of <netinet/in.h>.
*
* GLIBC/Linux has hacks on hacks to work-around this, not MUSL.
* Fortunately, including <netinet/in.h> first will force the Linux
* kernel headers to use that definition.
*/
#include <netinet/in.h>
#include "linux/xfrm.h" /* local (if configured) or system copy; for xfrm_user... */
#include <linux/netlink.h> /* for nlmmsghdr et.al. */
#define NETLINK_REQ_DATA_SIZE 8192
struct nlm_resp {
struct nlmsghdr n;
union {
struct nlmsgerr e;
struct xfrm_userpolicy_info pol; /* netlink_policy_expire */
struct xfrm_usersa_info sa; /* netlink_get_spi */
struct xfrm_usersa_info info; /* netlink_get_sa */
char data[NETLINK_REQ_DATA_SIZE];
} u;
};
void nl_addattr_l(struct nlmsghdr *n, const unsigned short maxlen,
const unsigned short type, const void *data, int alen);
struct rtattr *nl_addattr_nest(struct nlmsghdr *n, int maxlen,
int type);
void nl_addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
void nl_addattrstrz(struct nlmsghdr *n, int maxlen, int type,
const char *str);
void nl_addattr32(struct nlmsghdr *n, int maxlen, int type, const uint32_t data);
void nl_addattr16(struct nlmsghdr *n, int maxlen, int type, const uint16_t data);
void nl_addattr8(struct nlmsghdr *n, int maxlen, int type, const uint8_t data);
const struct nlattr *nl_getattr(const struct nlmsghdr *n, size_t *offset);
const char *nl_getattrvalstrz(const struct nlmsghdr *n,
const struct nlattr *attr);
#endif
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