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

fusl/include/netinet/ip.h

+#ifndef _NETINET_IP_H
+#define _NETINET_IP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <netinet/in.h>
+#include <endian.h>
+
+struct timestamp {
+        uint8_t len;
+        uint8_t ptr;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+        unsigned int flags:4;
+        unsigned int overflow:4;
+#else
+        unsigned int overflow:4;
+        unsigned int flags:4;
+#endif
+        uint32_t data[9];
+  };
+
+struct iphdr {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+        unsigned int ihl:4;
+        unsigned int version:4;
+#else
+        unsigned int version:4;
+        unsigned int ihl:4;
+#endif
+        uint8_t tos;
+        uint16_t tot_len;
+        uint16_t id;
+        uint16_t frag_off;
+        uint8_t ttl;
+        uint8_t protocol;
+        uint16_t check;
+        uint32_t saddr;
+        uint32_t daddr;
+};
+
+struct ip {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+        unsigned int ip_hl:4;
+        unsigned int ip_v:4;
+#else
+        unsigned int ip_v:4;
+        unsigned int ip_hl:4;
+#endif
+        uint8_t ip_tos;
+        uint16_t ip_len;
+        uint16_t ip_id;
+        uint16_t ip_off;
+        uint8_t ip_ttl;
+        uint8_t ip_p;
+        uint16_t ip_sum;
+        struct in_addr ip_src, ip_dst;
+};
+
+#define IP_RF 0x8000
+#define IP_DF 0x4000
+#define IP_MF 0x2000
+#define IP_OFFMASK 0x1fff
+
+struct ip_timestamp {
+        uint8_t ipt_code;
+        uint8_t ipt_len;
+        uint8_t ipt_ptr;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+        unsigned int ipt_flg:4;
+        unsigned int ipt_oflw:4;
+#else
+        unsigned int ipt_oflw:4;
+        unsigned int ipt_flg:4;
+#endif
+        uint32_t data[9];
+};
+
+#define IPVERSION       4
+#define IP_MAXPACKET    65535
+
+#define IPTOS_ECN_MASK          0x03
+#define IPTOS_ECN(x)            ((x) & IPTOS_ECN_MASK)
+#define IPTOS_ECN_NOT_ECT       0x00
+#define IPTOS_ECN_ECT1          0x01
+#define IPTOS_ECN_ECT0          0x02
+#define IPTOS_ECN_CE            0x03
+
+#define IPTOS_DSCP_MASK         0xfc
+#define IPTOS_DSCP(x)           ((x) & IPTOS_DSCP_MASK)
+#define IPTOS_DSCP_AF11         0x28
+#define IPTOS_DSCP_AF12         0x30
+#define IPTOS_DSCP_AF13         0x38
+#define IPTOS_DSCP_AF21         0x48
+#define IPTOS_DSCP_AF22         0x50
+#define IPTOS_DSCP_AF23         0x58
+#define IPTOS_DSCP_AF31         0x68
+#define IPTOS_DSCP_AF32         0x70
+#define IPTOS_DSCP_AF33         0x78
+#define IPTOS_DSCP_AF41         0x88
+#define IPTOS_DSCP_AF42         0x90
+#define IPTOS_DSCP_AF43         0x98
+#define IPTOS_DSCP_EF           0xb8
+
+#define IPTOS_CLASS_MASK        0xe0
+#define IPTOS_CLASS(x)          ((x) & IPTOS_CLASS_MASK)
+#define IPTOS_CLASS_CS0         0x00
+#define IPTOS_CLASS_CS1         0x20
+#define IPTOS_CLASS_CS2         0x40
+#define IPTOS_CLASS_CS3         0x60
+#define IPTOS_CLASS_CS4         0x80
+#define IPTOS_CLASS_CS5         0xa0
+#define IPTOS_CLASS_CS6         0xc0
+#define IPTOS_CLASS_CS7         0xe0
+#define IPTOS_CLASS_DEFAULT     IPTOS_CLASS_CS0
+
+#define IPTOS_TOS_MASK          0x1E
+#define IPTOS_TOS(tos)          ((tos) & IPTOS_TOS_MASK)
+#define IPTOS_LOWDELAY          0x10
+#define IPTOS_THROUGHPUT        0x08
+#define IPTOS_RELIABILITY       0x04
+#define IPTOS_LOWCOST           0x02
+#define IPTOS_MINCOST           IPTOS_LOWCOST
+
+#define IPTOS_PREC_MASK                 0xe0
+#define IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
+#define IPTOS_PREC_NETCONTROL           0xe0
+#define IPTOS_PREC_INTERNETCONTROL      0xc0
+#define IPTOS_PREC_CRITIC_ECP           0xa0
+#define IPTOS_PREC_FLASHOVERRIDE        0x80
+#define IPTOS_PREC_FLASH                0x60
+#define IPTOS_PREC_IMMEDIATE            0x40
+#define IPTOS_PREC_PRIORITY             0x20
+#define IPTOS_PREC_ROUTINE              0x00
+
+#define IPOPT_COPY              0x80
+#define IPOPT_CLASS_MASK        0x60
+#define IPOPT_NUMBER_MASK       0x1f
+
+#define IPOPT_COPIED(o)         ((o) & IPOPT_COPY)
+#define IPOPT_CLASS(o)          ((o) & IPOPT_CLASS_MASK)
+#define IPOPT_NUMBER(o)         ((o) & IPOPT_NUMBER_MASK)
+
+#define IPOPT_CONTROL           0x00
+#define IPOPT_RESERVED1         0x20
+#define IPOPT_DEBMEAS           0x40
+#define IPOPT_MEASUREMENT       IPOPT_DEBMEAS
+#define IPOPT_RESERVED2         0x60
+
+#define IPOPT_EOL               0
+#define IPOPT_END               IPOPT_EOL
+#define IPOPT_NOP               1
+#define IPOPT_NOOP              IPOPT_NOP
+
+#define IPOPT_RR                7
+#define IPOPT_TS                68
+#define IPOPT_TIMESTAMP         IPOPT_TS
+#define IPOPT_SECURITY          130
+#define IPOPT_SEC               IPOPT_SECURITY
+#define IPOPT_LSRR              131
+#define IPOPT_SATID             136
+#define IPOPT_SID               IPOPT_SATID
+#define IPOPT_SSRR              137
+#define IPOPT_RA                148
+
+#define IPOPT_OPTVAL            0
+#define IPOPT_OLEN              1
+#define IPOPT_OFFSET            2
+#define IPOPT_MINOFF            4
+
+#define MAX_IPOPTLEN            40
+
+#define IPOPT_TS_TSONLY         0
+#define IPOPT_TS_TSANDADDR      1
+#define IPOPT_TS_PRESPEC        3
+
+#define IPOPT_SECUR_UNCLASS     0x0000
+#define IPOPT_SECUR_CONFID      0xf135
+#define IPOPT_SECUR_EFTO        0x789a
+#define IPOPT_SECUR_MMMM        0xbc4d
+#define IPOPT_SECUR_RESTR       0xaf13
+#define IPOPT_SECUR_SECRET      0xd788
+#define IPOPT_SECUR_TOPSECRET   0x6bc5
+
+#define MAXTTL          255
+#define IPDEFTTL        64
+#define IPFRAGTTL       60
+#define IPTTLDEC        1
+
+#define IP_MSS          576
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif