| 10 |
|
* 2. Redistributions in binary form must reproduce the above copyright |
| 11 |
|
* notice, this list of conditions and the following disclaimer in the |
| 12 |
|
* documentation and/or other materials provided with the distribution. |
| 13 |
< |
* 3. All advertising materials mentioning features or use of this software |
| 14 |
< |
* must display the following acknowledgement: |
| 15 |
< |
* This product includes software developed by the University of |
| 16 |
< |
* California, Berkeley and its contributors. |
| 17 |
< |
* 4. Neither the name of the University nor the names of its contributors |
| 13 |
> |
* 3. Neither the name of the University nor the names of its contributors |
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|
* may be used to endorse or promote products derived from this software |
| 15 |
|
* without specific prior written permission. |
| 16 |
|
* |
| 71 |
|
|
| 72 |
|
/* |
| 73 |
|
* Structure of an internet header, naked of options. |
| 78 |
– |
* |
| 79 |
– |
* We declare ip_len and ip_off to be short, rather than u_short |
| 80 |
– |
* pragmatically since otherwise unsigned comparisons can result |
| 81 |
– |
* against negative integers quite easily, and fail in subtle ways. |
| 74 |
|
*/ |
| 75 |
+ |
#ifdef PRAGMA_PACK_SUPPORTED |
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+ |
#pragma pack(1) |
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+ |
#endif |
| 78 |
+ |
|
| 79 |
|
struct ip { |
| 80 |
|
#ifdef WORDS_BIGENDIAN |
| 81 |
< |
u_int ip_v:4, /* version */ |
| 81 |
> |
u_char ip_v:4, /* version */ |
| 82 |
|
ip_hl:4; /* header length */ |
| 83 |
|
#else |
| 84 |
< |
u_int ip_hl:4, /* header length */ |
| 84 |
> |
u_char ip_hl:4, /* header length */ |
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|
ip_v:4; /* version */ |
| 86 |
|
#endif |
| 87 |
|
u_int8_t ip_tos; /* type of service */ |
| 88 |
< |
int16_t ip_len; /* total length */ |
| 88 |
> |
u_int16_t ip_len; /* total length */ |
| 89 |
|
u_int16_t ip_id; /* identification */ |
| 90 |
< |
int16_t ip_off; /* fragment offset field */ |
| 90 |
> |
u_int16_t ip_off; /* fragment offset field */ |
| 91 |
|
#define IP_DF 0x4000 /* don't fragment flag */ |
| 92 |
|
#define IP_MF 0x2000 /* more fragments flag */ |
| 93 |
|
#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ |
| 95 |
|
u_int8_t ip_p; /* protocol */ |
| 96 |
|
u_int16_t ip_sum; /* checksum */ |
| 97 |
|
struct in_addr ip_src,ip_dst; /* source and dest address */ |
| 98 |
< |
}; |
| 98 |
> |
} PACKED__; |
| 99 |
> |
|
| 100 |
> |
#ifdef PRAGMA_PACK_SUPPORTED |
| 101 |
> |
#pragma pack(0) |
| 102 |
> |
#endif |
| 103 |
|
|
| 104 |
|
#define IP_MAXPACKET 65535 /* maximum packet size */ |
| 105 |
|
|
| 143 |
|
/* |
| 144 |
|
* Time stamp option structure. |
| 145 |
|
*/ |
| 146 |
+ |
#ifdef PRAGMA_PACK_SUPPORTED |
| 147 |
+ |
#pragma pack(1) |
| 148 |
+ |
#endif |
| 149 |
+ |
|
| 150 |
|
struct ip_timestamp { |
| 151 |
|
u_int8_t ipt_code; /* IPOPT_TS */ |
| 152 |
|
u_int8_t ipt_len; /* size of structure (variable) */ |
| 153 |
|
u_int8_t ipt_ptr; /* index of current entry */ |
| 154 |
|
#ifdef WORDS_BIGENDIAN |
| 155 |
< |
u_int ipt_oflw:4, /* overflow counter */ |
| 155 |
> |
u_char ipt_oflw:4, /* overflow counter */ |
| 156 |
|
ipt_flg:4; /* flags, see below */ |
| 157 |
|
#else |
| 158 |
< |
u_int ipt_flg:4, /* flags, see below */ |
| 158 |
> |
u_char ipt_flg:4, /* flags, see below */ |
| 159 |
|
ipt_oflw:4; /* overflow counter */ |
| 160 |
|
#endif |
| 161 |
|
union ipt_timestamp { |
| 165 |
|
n_long ipt_time; |
| 166 |
|
} ipt_ta[1]; |
| 167 |
|
} ipt_timestamp; |
| 168 |
< |
}; |
| 168 |
> |
} PACKED__; |
| 169 |
> |
|
| 170 |
> |
#ifdef PRAGMA_PACK_SUPPORTED |
| 171 |
> |
#pragma pack(0) |
| 172 |
> |
#endif |
| 173 |
|
|
| 174 |
|
/* flag bits for ipt_flg */ |
| 175 |
|
#define IPOPT_TS_TSONLY 0 /* timestamps only */ |
| 216 |
|
/* |
| 217 |
|
* Overlay for ip header used by other protocols (tcp, udp). |
| 218 |
|
*/ |
| 219 |
+ |
#ifdef PRAGMA_PACK_SUPPORTED |
| 220 |
+ |
#pragma pack(1) |
| 221 |
+ |
#endif |
| 222 |
+ |
|
| 223 |
|
struct ipovly { |
| 224 |
|
caddr32_t ih_next, ih_prev; /* for protocol sequence q's */ |
| 225 |
|
u_int8_t ih_x1; /* (unused) */ |
| 226 |
|
u_int8_t ih_pr; /* protocol */ |
| 227 |
< |
int16_t ih_len; /* protocol length */ |
| 227 |
> |
u_int16_t ih_len; /* protocol length */ |
| 228 |
|
struct in_addr ih_src; /* source internet address */ |
| 229 |
|
struct in_addr ih_dst; /* destination internet address */ |
| 230 |
< |
}; |
| 230 |
> |
} PACKED__; |
| 231 |
> |
|
| 232 |
> |
#ifdef PRAGMA_PACK_SUPPORTED |
| 233 |
> |
#pragma pack(0) |
| 234 |
> |
#endif |
| 235 |
|
|
| 236 |
|
/* |
| 237 |
|
* Ip reassembly queue structure. Each fragment |
| 257 |
|
*/ |
| 258 |
|
struct ipasfrag { |
| 259 |
|
#ifdef WORDS_BIGENDIAN |
| 260 |
< |
u_int ip_v:4, |
| 260 |
> |
u_char ip_v:4, |
| 261 |
|
ip_hl:4; |
| 262 |
|
#else |
| 263 |
< |
u_int ip_hl:4, |
| 263 |
> |
u_char ip_hl:4, |
| 264 |
|
ip_v:4; |
| 265 |
|
#endif |
| 266 |
|
/* BUG : u_int changed to u_int8_t. |
| 269 |
|
u_int8_t ipf_mff; /* XXX overlays ip_tos: use low bit |
| 270 |
|
* to avoid destroying tos (PPPDTRuu); |
| 271 |
|
* copied from (ip_off&IP_MF) */ |
| 272 |
< |
int16_t ip_len; |
| 272 |
> |
u_int16_t ip_len; |
| 273 |
|
u_int16_t ip_id; |
| 274 |
< |
int16_t ip_off; |
| 274 |
> |
u_int16_t ip_off; |
| 275 |
|
u_int8_t ip_ttl; |
| 276 |
|
u_int8_t ip_p; |
| 277 |
|
u_int16_t ip_sum; |
