Add a "fork" of musl as //fusl.

fusl/include/netinet/ip_icmp.h

+#ifndef _NETINET_IP_ICMP_H
+#define _NETINET_IP_ICMP_H
+
+#include <stdint.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct icmphdr {
+        uint8_t type;
+        uint8_t code;
+        uint16_t checksum;
+        union {
+                struct {
+                        uint16_t id;
+                        uint16_t sequence;
+                } echo;
+                uint32_t gateway;
+                struct {
+                        uint16_t __unused;
+                        uint16_t mtu;
+                } frag;
+        } un;
+};
+
+#define ICMP_ECHOREPLY          0
+#define ICMP_DEST_UNREACH       3
+#define ICMP_SOURCE_QUENCH      4
+#define ICMP_REDIRECT           5
+#define ICMP_ECHO               8
+#define ICMP_TIME_EXCEEDED      11
+#define ICMP_PARAMETERPROB      12
+#define ICMP_TIMESTAMP          13
+#define ICMP_TIMESTAMPREPLY     14
+#define ICMP_INFO_REQUEST       15
+#define ICMP_INFO_REPLY         16
+#define ICMP_ADDRESS            17
+#define ICMP_ADDRESSREPLY       18
+#define NR_ICMP_TYPES           18
+
+
+#define ICMP_NET_UNREACH        0
+#define ICMP_HOST_UNREACH       1
+#define ICMP_PROT_UNREACH       2
+#define ICMP_PORT_UNREACH       3
+#define ICMP_FRAG_NEEDED        4
+#define ICMP_SR_FAILED          5
+#define ICMP_NET_UNKNOWN        6
+#define ICMP_HOST_UNKNOWN       7
+#define ICMP_HOST_ISOLATED      8
+#define ICMP_NET_ANO            9
+#define ICMP_HOST_ANO           10
+#define ICMP_NET_UNR_TOS        11
+#define ICMP_HOST_UNR_TOS       12
+#define ICMP_PKT_FILTERED       13
+#define ICMP_PREC_VIOLATION     14
+#define ICMP_PREC_CUTOFF        15
+#define NR_ICMP_UNREACH         15
+
+#define ICMP_REDIR_NET          0
+#define ICMP_REDIR_HOST         1
+#define ICMP_REDIR_NETTOS       2
+#define ICMP_REDIR_HOSTTOS      3
+
+#define ICMP_EXC_TTL            0
+#define ICMP_EXC_FRAGTIME       1
+
+
+struct icmp_ra_addr {
+        uint32_t ira_addr;
+        uint32_t ira_preference;
+};
+
+struct icmp {
+        uint8_t  icmp_type;
+        uint8_t  icmp_code;
+        uint16_t icmp_cksum;
+        union {
+                uint8_t ih_pptr;
+                struct in_addr ih_gwaddr;
+                struct ih_idseq {
+                        uint16_t icd_id;
+                        uint16_t icd_seq;
+                } ih_idseq;
+                uint32_t ih_void;
+
+                struct ih_pmtu {
+                        uint16_t ipm_void;
+                        uint16_t ipm_nextmtu;
+                } ih_pmtu;
+
+                struct ih_rtradv {
+                        uint8_t irt_num_addrs;
+                        uint8_t irt_wpa;
+                        uint16_t irt_lifetime;
+                } ih_rtradv;
+        } icmp_hun;
+        union {
+                struct {
+                        uint32_t its_otime;
+                        uint32_t its_rtime;
+                        uint32_t its_ttime;
+                } id_ts;
+                struct {
+                        struct ip idi_ip;
+                } id_ip;
+                struct icmp_ra_addr id_radv;
+                uint32_t   id_mask;
+                uint8_t    id_data[1];
+        } icmp_dun;
+};
+
+#define icmp_pptr       icmp_hun.ih_pptr
+#define icmp_gwaddr     icmp_hun.ih_gwaddr
+#define icmp_id         icmp_hun.ih_idseq.icd_id
+#define icmp_seq        icmp_hun.ih_idseq.icd_seq
+#define icmp_void       icmp_hun.ih_void
+#define icmp_pmvoid     icmp_hun.ih_pmtu.ipm_void
+#define icmp_nextmtu    icmp_hun.ih_pmtu.ipm_nextmtu
+#define icmp_num_addrs  icmp_hun.ih_rtradv.irt_num_addrs
+#define icmp_wpa        icmp_hun.ih_rtradv.irt_wpa
+#define icmp_lifetime   icmp_hun.ih_rtradv.irt_lifetime
+#define icmp_otime      icmp_dun.id_ts.its_otime
+#define icmp_rtime      icmp_dun.id_ts.its_rtime
+#define icmp_ttime      icmp_dun.id_ts.its_ttime
+#define icmp_ip         icmp_dun.id_ip.idi_ip
+#define icmp_radv       icmp_dun.id_radv
+#define icmp_mask       icmp_dun.id_mask
+#define icmp_data       icmp_dun.id_data
+
+#define ICMP_MINLEN     8
+#define ICMP_TSLEN      (8 + 3 * sizeof (n_time))
+#define ICMP_MASKLEN    12
+#define ICMP_ADVLENMIN  (8 + sizeof (struct ip) + 8)
+#define ICMP_ADVLEN(p)  (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
+
+#define ICMP_UNREACH            3
+#define ICMP_SOURCEQUENCH       4
+#define ICMP_ROUTERADVERT       9
+#define ICMP_ROUTERSOLICIT      10
+#define ICMP_TIMXCEED           11
+#define ICMP_PARAMPROB          12
+#define ICMP_TSTAMP             13
+#define ICMP_TSTAMPREPLY        14
+#define ICMP_IREQ               15
+#define ICMP_IREQREPLY          16
+#define ICMP_MASKREQ            17
+#define ICMP_MASKREPLY          18
+#define ICMP_MAXTYPE            18
+
+#define ICMP_UNREACH_NET                0
+#define ICMP_UNREACH_HOST               1
+#define ICMP_UNREACH_PROTOCOL           2
+#define ICMP_UNREACH_PORT               3
+#define ICMP_UNREACH_NEEDFRAG           4
+#define ICMP_UNREACH_SRCFAIL            5
+#define ICMP_UNREACH_NET_UNKNOWN        6
+#define ICMP_UNREACH_HOST_UNKNOWN       7
+#define ICMP_UNREACH_ISOLATED           8
+#define ICMP_UNREACH_NET_PROHIB         9
+#define ICMP_UNREACH_HOST_PROHIB        10
+#define ICMP_UNREACH_TOSNET             11
+#define ICMP_UNREACH_TOSHOST            12
+#define ICMP_UNREACH_FILTER_PROHIB      13
+#define ICMP_UNREACH_HOST_PRECEDENCE    14
+#define ICMP_UNREACH_PRECEDENCE_CUTOFF  15
+
+#define ICMP_REDIRECT_NET       0
+#define ICMP_REDIRECT_HOST      1
+#define ICMP_REDIRECT_TOSNET    2
+#define ICMP_REDIRECT_TOSHOST   3
+
+#define ICMP_TIMXCEED_INTRANS   0
+#define ICMP_TIMXCEED_REASS     1
+
+#define ICMP_PARAMPROB_OPTABSENT 1
+
+#define ICMP_INFOTYPE(type) \
+        ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
+        (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
+        (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
+        (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
+        (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif