source: asp3_tinet_ecnl_arm/trunk/musl-1.1.18/src/network/netlink.h@ 352

#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);