#include <netinet/in_systm.h>
#include <netinet/in.h>
-
-/* Added by Wu Yongwei */
-#ifndef LITTLE_ENDIAN
-#define LITTLE_ENDIAN 1234
-#define BIG_ENDIAN 4321
-#endif
-#ifndef BYTE_ORDER
-#define BYTE_ORDER LITTLE_ENDIAN
-#endif
+#include <bits/endian.h>
/*
* Definitions for internet protocol version 4.
* Per RFC 791, September 1981.
*/
-#define IPVERSION 4
+#define IPVERSION 4
/*
* Structure of an internet header, naked of options.
*/
struct ip {
#ifdef _IP_VHL
- u_char ip_vhl; /* version << 4 | header length >> 2 */
+ u_char ip_vhl; /* version << 4 | header length >> 2 */
#else
-#if BYTE_ORDER == LITTLE_ENDIAN
- u_int ip_hl:4, /* header length */
- ip_v:4; /* version */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ u_int ip_hl:4, /* header length */
+ ip_v:4; /* version */
#endif
-#if BYTE_ORDER == BIG_ENDIAN
- u_int ip_v:4, /* version */
- ip_hl:4; /* header length */
+#if __BYTE_ORDER == __BIG_ENDIAN
+ u_int ip_v:4, /* version */
+ ip_hl:4; /* header length */
#endif
#endif /* not _IP_VHL */
- u_char ip_tos; /* type of service */
- u_short ip_len; /* total length */
- u_short ip_id; /* identification */
- u_short ip_off; /* fragment offset field */
-#define IP_RF 0x8000 /* reserved fragment flag */
-#define IP_DF 0x4000 /* dont fragment flag */
-#define IP_MF 0x2000 /* more fragments flag */
-#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
- u_char ip_ttl; /* time to live */
- u_char ip_p; /* protocol */
- u_short ip_sum; /* checksum */
+ u_char ip_tos; /* type of service */
+ u_short ip_len; /* total length */
+ u_short ip_id; /* identification */
+ u_short ip_off; /* fragment offset field */
+#define IP_RF 0x8000 /* reserved fragment flag */
+#define IP_DF 0x4000 /* dont fragment flag */
+#define IP_MF 0x2000 /* more fragments flag */
+#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
+ u_char ip_ttl; /* time to live */
+ u_char ip_p; /* protocol */
+ u_short ip_sum; /* checksum */
struct in_addr ip_src,ip_dst; /* source and dest address */
};
#ifdef _IP_VHL
-#define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl))
-#define IP_VHL_HL(vhl) ((vhl) & 0x0f)
-#define IP_VHL_V(vhl) ((vhl) >> 4)
-#define IP_VHL_BORING 0x45
+#define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl))
+#define IP_VHL_HL(vhl) ((vhl) & 0x0f)
+#define IP_VHL_V(vhl) ((vhl) >> 4)
+#define IP_VHL_BORING 0x45
#endif
-#define IP_MAXPACKET 65535 /* maximum packet size */
+#define IP_MAXPACKET 65535 /* maximum packet size */
+
+/*
+ * Definitions for DiffServ Codepoints as per RFC2474
+ */
+#define IPTOS_DSCP_CS0 0x00
+#define IPTOS_DSCP_CS1 0x20
+#define IPTOS_DSCP_AF11 0x28
+#define IPTOS_DSCP_AF12 0x30
+#define IPTOS_DSCP_AF13 0x38
+#define IPTOS_DSCP_CS2 0x40
+#define IPTOS_DSCP_AF21 0x48
+#define IPTOS_DSCP_AF22 0x50
+#define IPTOS_DSCP_AF23 0x58
+#define IPTOS_DSCP_CS3 0x60
+#define IPTOS_DSCP_AF31 0x68
+#define IPTOS_DSCP_AF32 0x70
+#define IPTOS_DSCP_AF33 0x78
+#define IPTOS_DSCP_CS4 0x80
+#define IPTOS_DSCP_AF41 0x88
+#define IPTOS_DSCP_AF42 0x90
+#define IPTOS_DSCP_AF43 0x98
+#define IPTOS_DSCP_CS5 0xa0
+#define IPTOS_DSCP_EF 0xb8
+#define IPTOS_DSCP_CS6 0xc0
+#define IPTOS_DSCP_CS7 0xe0
+
+/*
+ * Definitions for DiffServ Class Selector Codepoints as defined by Linux.
+ * Linux uses different names than OpenBSD, unfortunately.
+ */
+#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
+/* Linux also defined masks and access macros. */
+#define IPTOS_CLASS_MASK 0xe0
+#define IPTOS_CLASS(cs) ((cs) & IPTOS_CLASS_MASK)
+#define IPTOS_DSCP_MASK 0xfc
+#define IPTOS_DSCP(cp) ((cp) & IPTOS_DSCP_MASK)
/*
- * Definitions for IP type of service (ip_tos)
+ * ECN (Explicit Congestion Notification) codepoints in RFC3168
+ * mapped to the lower 2 bits of the TOS field.
+ */
+#define IPTOS_ECN_NOTECT 0x00 /* not-ECT */
+#define IPTOS_ECN_ECT1 0x01 /* ECN-capable transport (1) */
+#define IPTOS_ECN_ECT0 0x02 /* ECN-capable transport (0) */
+#define IPTOS_ECN_CE 0x03 /* congestion experienced */
+#define IPTOS_ECN_MASK 0x03 /* ECN field mask */
+/* Linux also defined an access macro.
+ * The name of IPTOS_ECN_NOTECT differs, too, unfortunately. */
+#define IPTOS_ECN(cn) ((cn) & IPTOS_ECN_MASK)
+#define IPTOS_ECN_NOT_ECT 0x00
+
+/*
+ * Definitions for IP type of service per RFC1349 (ip_tos)
+ * DEPRECATED
*/
#ifndef IPTOS_LOWDELAY
-#define IPTOS_LOWDELAY 0x10
-#define IPTOS_THROUGHPUT 0x08
-#define IPTOS_RELIABILITY 0x04
+#define IPTOS_LOWDELAY 0x10
+#define IPTOS_THROUGHPUT 0x08
+#define IPTOS_RELIABILITY 0x04
#endif
-#define IPTOS_MINCOST 0x02
-/* ECN bits proposed by Sally Floyd */
-#define IPTOS_CE 0x01 /* congestion experienced */
-#define IPTOS_ECT 0x02 /* ECN-capable transport */
-
+#define IPTOS_MINCOST 0x02
+/* ECN RFC3168 obsoletes RFC2481, and these will be deprecated soon. */
+#define IPTOS_CE 0x01 /* congestion experienced */
+#define IPTOS_ECT 0x02 /* ECN-capable transport */
/*
- * Definitions for IP precedence (also in ip_tos) (hopefully unused)
+ * Definitions for IP precedence per RFC1195 (also in ip_tos) (hopefully unused)
*/
-#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 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
+
/*
* Definitions for options.
*/
-#define IPOPT_COPIED(o) ((o)&0x80)
-#define IPOPT_CLASS(o) ((o)&0x60)
-#define IPOPT_NUMBER(o) ((o)&0x1f)
-
-#define IPOPT_CONTROL 0x00
-#define IPOPT_RESERVED1 0x20
-#define IPOPT_DEBMEAS 0x40
-#define IPOPT_RESERVED2 0x60
-
-#define IPOPT_EOL 0 /* end of option list */
-#define IPOPT_NOP 1 /* no operation */
-
-#define IPOPT_RR 7 /* record packet route */
-#define IPOPT_TS 68 /* timestamp */
-#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
-#define IPOPT_LSRR 131 /* loose source route */
-#define IPOPT_SATID 136 /* satnet id */
-#define IPOPT_SSRR 137 /* strict source route */
-#define IPOPT_RA 148 /* router alert */
+#define IPOPT_COPIED(o) ((o)&0x80)
+#define IPOPT_CLASS(o) ((o)&0x60)
+#define IPOPT_NUMBER(o) ((o)&0x1f)
+
+#define IPOPT_CONTROL 0x00
+#define IPOPT_RESERVED1 0x20
+#define IPOPT_DEBMEAS 0x40
+#define IPOPT_RESERVED2 0x60
+
+#define IPOPT_EOL 0 /* end of option list */
+#define IPOPT_NOP 1 /* no operation */
+
+#define IPOPT_RR 7 /* record packet route */
+#define IPOPT_TS 68 /* timestamp */
+#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
+#define IPOPT_LSRR 131 /* loose source route */
+#define IPOPT_SATID 136 /* satnet id */
+#define IPOPT_SSRR 137 /* strict source route */
+#define IPOPT_RA 148 /* router alert */
/*
* Offsets to fields in options other than EOL and NOP.
*/
-#define IPOPT_OPTVAL 0 /* option ID */
-#define IPOPT_OLEN 1 /* option length */
-#define IPOPT_OFFSET 2 /* offset within option */
-#define IPOPT_MINOFF 4 /* min value of above */
+#define IPOPT_OPTVAL 0 /* option ID */
+#define IPOPT_OLEN 1 /* option length */
+#define IPOPT_OFFSET 2 /* offset within option */
+#define IPOPT_MINOFF 4 /* min value of above */
/*
* Time stamp option structure.
*/
struct ip_timestamp {
- u_char ipt_code; /* IPOPT_TS */
- u_char ipt_len; /* size of structure (variable) */
- u_char ipt_ptr; /* index of current entry */
-#if BYTE_ORDER == LITTLE_ENDIAN
- u_int ipt_flg:4, /* flags, see below */
- ipt_oflw:4; /* overflow counter */
+ u_char ipt_code; /* IPOPT_TS */
+ u_char ipt_len; /* size of structure (variable) */
+ u_char ipt_ptr; /* index of current entry */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ u_int ipt_flg:4, /* flags, see below */
+ ipt_oflw:4; /* overflow counter */
#endif
-#if BYTE_ORDER == BIG_ENDIAN
- u_int ipt_oflw:4, /* overflow counter */
- ipt_flg:4; /* flags, see below */
+#if __BYTE_ORDER == __BIG_ENDIAN
+ u_int ipt_oflw:4, /* overflow counter */
+ ipt_flg:4; /* flags, see below */
#endif
union ipt_timestamp {
n_long ipt_time[1];
};
/* flag bits for ipt_flg */
-#define IPOPT_TS_TSONLY 0 /* timestamps only */
-#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
-#define IPOPT_TS_PRESPEC 3 /* specified modules only */
+#define IPOPT_TS_TSONLY 0 /* timestamps only */
+#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
+#define IPOPT_TS_PRESPEC 3 /* specified modules only */
/* bits for security (not byte swapped) */
-#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 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
/*
* Internet implementation parameters.
*/
-#define MAXTTL 255 /* maximum time to live (seconds) */
-#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
-#define IPFRAGTTL 60 /* time to live for frags, slowhz */
-#define IPTTLDEC 1 /* subtracted when forwarding */
+#define MAXTTL 255 /* maximum time to live (seconds) */
+#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
+#define IPFRAGTTL 60 /* time to live for frags, slowhz */
+#define IPTTLDEC 1 /* subtracted when forwarding */
-#define IP_MSS 576 /* default maximum segment size */
+#define IP_MSS 576 /* default maximum segment size */
#endif
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