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#include <stdint.h>
/* linux/netlink.h */
#define NETLINK_ROUTE 0
struct nlmsghdr {
uint32_t nlmsg_len;
uint16_t nlmsg_type;
uint16_t nlmsg_flags;
uint32_t nlmsg_seq;
uint32_t nlmsg_pid;
};
#define NLM_F_REQUEST 1
#define NLM_F_MULTI 2
#define NLM_F_ACK 4
#define NLM_F_ROOT 0x100
#define NLM_F_MATCH 0x200
#define NLM_F_ATOMIC 0x400
#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
#define NLMSG_NOOP 0x1
#define NLMSG_ERROR 0x2
#define NLMSG_DONE 0x3
#define NLMSG_OVERRUN 0x4
/* linux/rtnetlink.h */
#define RTM_NEWLINK 16
#define RTM_GETLINK 18
#define RTM_NEWADDR 20
#define RTM_GETADDR 22
struct rtattr {
unsigned short rta_len;
unsigned short rta_type;
};
struct rtgenmsg {
unsigned char rtgen_family;
};
struct ifinfomsg {
unsigned char ifi_family;
unsigned char __ifi_pad;
unsigned short ifi_type;
int ifi_index;
unsigned ifi_flags;
unsigned ifi_change;
};
/* linux/if_link.h */
#define IFLA_ADDRESS 1
#define IFLA_BROADCAST 2
#define IFLA_IFNAME 3
#define IFLA_STATS 7
/* linux/if_addr.h */
struct ifaddrmsg {
uint8_t ifa_family;
uint8_t ifa_prefixlen;
uint8_t ifa_flags;
uint8_t ifa_scope;
uint32_t ifa_index;
};
#define IFA_ADDRESS 1
#define IFA_LOCAL 2
#define IFA_LABEL 3
#define IFA_BROADCAST 4
/* musl */
#define NETLINK_ALIGN(len) (((len)+3) & ~3)
#define NLMSG_DATA(nlh) ((void*)((char*)(nlh)+sizeof(struct nlmsghdr)))
#define NLMSG_DATALEN(nlh) ((nlh)->nlmsg_len-sizeof(struct nlmsghdr))
#define NLMSG_DATAEND(nlh) ((char*)(nlh)+(nlh)->nlmsg_len)
#define NLMSG_NEXT(nlh) (struct nlmsghdr*)((char*)(nlh)+NETLINK_ALIGN((nlh)->nlmsg_len))
#define NLMSG_OK(nlh,end) ((char*)(end)-(char*)(nlh) >= sizeof(struct nlmsghdr))
#define RTA_DATA(rta) ((void*)((char*)(rta)+sizeof(struct rtattr)))
#define RTA_DATALEN(rta) ((rta)->rta_len-sizeof(struct rtattr))
#define RTA_DATAEND(rta) ((char*)(rta)+(rta)->rta_len)
#define RTA_NEXT(rta) (struct rtattr*)((char*)(rta)+NETLINK_ALIGN((rta)->rta_len))
#define RTA_OK(nlh,end) ((char*)(end)-(char*)(rta) >= sizeof(struct rtattr))
#define NLMSG_RTA(nlh,len) ((void*)((char*)(nlh)+sizeof(struct nlmsghdr)+NETLINK_ALIGN(len)))
#define NLMSG_RTAOK(rta,nlh) RTA_OK(rta,NLMSG_DATAEND(nlh))
int __rtnetlink_enumerate(int link_af, int addr_af, int (*cb)(void *ctx, struct nlmsghdr *h), void *ctx);
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