1 /******************************************************************************
3 * Copyright(c) 2007 - 2017 Realtek Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 *****************************************************************************/
18 /* SOL_IP socket options */
20 #define IPTOS_TOS_MASK 0x1E
21 #define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK)
22 #define IPTOS_LOWDELAY 0x10
23 #define IPTOS_THROUGHPUT 0x08
24 #define IPTOS_RELIABILITY 0x04
25 #define IPTOS_MINCOST 0x02
27 #define IPTOS_PREC_MASK 0xE0
28 #define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK)
29 #define IPTOS_PREC_NETCONTROL 0xe0
30 #define IPTOS_PREC_INTERNETCONTROL 0xc0
31 #define IPTOS_PREC_CRITIC_ECP 0xa0
32 #define IPTOS_PREC_FLASHOVERRIDE 0x80
33 #define IPTOS_PREC_FLASH 0x60
34 #define IPTOS_PREC_IMMEDIATE 0x40
35 #define IPTOS_PREC_PRIORITY 0x20
36 #define IPTOS_PREC_ROUTINE 0x00
40 #define IPOPT_COPY 0x80
41 #define IPOPT_CLASS_MASK 0x60
42 #define IPOPT_NUMBER_MASK 0x1f
44 #define IPOPT_COPIED(o) ((o)&IPOPT_COPY)
45 #define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK)
46 #define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK)
48 #define IPOPT_CONTROL 0x00
49 #define IPOPT_RESERVED1 0x20
50 #define IPOPT_MEASUREMENT 0x40
51 #define IPOPT_RESERVED2 0x60
53 #define IPOPT_END (0 | IPOPT_CONTROL)
54 #define IPOPT_NOOP (1 | IPOPT_CONTROL)
55 #define IPOPT_SEC (2 | IPOPT_CONTROL | IPOPT_COPY)
56 #define IPOPT_LSRR (3 | IPOPT_CONTROL | IPOPT_COPY)
57 #define IPOPT_TIMESTAMP (4 | IPOPT_MEASUREMENT)
58 #define IPOPT_RR (7 | IPOPT_CONTROL)
59 #define IPOPT_SID (8 | IPOPT_CONTROL | IPOPT_COPY)
60 #define IPOPT_SSRR (9 | IPOPT_CONTROL | IPOPT_COPY)
61 #define IPOPT_RA (20 | IPOPT_CONTROL | IPOPT_COPY)
67 /* struct timestamp, struct route and MAX_ROUTES are removed.
69 REASONS: it is clear that nobody used them because:
70 - MAX_ROUTES value was wrong.
71 - "struct route" was wrong.
72 - "struct timestamp" had fatally misaligned bitfields and was completely unusable.
75 #define IPOPT_OPTVAL 0
77 #define IPOPT_OFFSET 2
78 #define IPOPT_MINOFF 4
79 #define MAX_IPOPTLEN 40
80 #define IPOPT_NOP IPOPT_NOOP
81 #define IPOPT_EOL IPOPT_END
82 #define IPOPT_TS IPOPT_TIMESTAMP
84 #define IPOPT_TS_TSONLY 0 /* timestamps only */
85 #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
86 #define IPOPT_TS_PRESPEC 3 /* specified modules only */
91 __u32 faddr; /* Saved first hop address */
96 unsigned char is_setbyuser:1, /* Set by setsockopt? */
97 is_data:1, /* Options in __data, rather than skb */
98 is_strictroute:1, /* Strict source route */
99 srr_is_hit:1, /* Packet destination addr was our one */
100 is_changed:1, /* IP checksum more not valid */
101 rr_needaddr:1, /* Need to record addr of outgoing dev */
102 ts_needtime:1, /* Need to record timestamp */
103 ts_needaddr:1; /* Need to record addr of outgoing dev */
104 unsigned char router_alert;
105 unsigned char __pad1;
106 unsigned char __pad2;
107 unsigned char __data[0];
110 #define optlength(opt) (sizeof(struct ip_options) + opt->optlen)
114 #if defined(__LITTLE_ENDIAN_BITFIELD)
117 #elif defined (__BIG_ENDIAN_BITFIELD)
121 #error "Please fix <asm/byteorder.h>"
132 /*The options start here. */
135 #endif /* _LINUX_IP_H */