1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414
|
.\" This man page is Copyright (C) 1999 Andi Kleen <ak@muc.de>.
.\" Permission is granted to distribute possibly modified copies
.\" of this page provided the header is included verbatim,
.\" and in case of nontrivial modification author and date
.\" of the modification is added to the header.
.\" $Id: packet.7,v 1.12 2001/06/19 07:07:38 argrath Exp $
.\"
.\" Japanese Version Copyright (c) 1999 NAKANO Takeo all rights reserved.
.\" Translated Mon 6 Dec 1999 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated Tue 13 Feb 2001 by Kentaro Shirakata <argrath@ub32.org>
.\"
.\"WORD physical layer ʪ
.\"WORD link level header(s) ٥إå
.\"WORD phyxical header(s) ʪإå
.\"WORD effective user id ¸桼 id
.\"WORD capability
.\"WORD pending error ٱ䥨顼
.\"WORD promiscuous mode ̵̥⡼
.\"
.TH PACKET 7 1999-04-29 "Linux Man Page" "Linux Programmer's Manual"
.SH ̾
packet, PF_PACKET \- ǥХ٥Υѥåȥե
.\" yes, this is ugly.
.SH
.nf
.B #include <sys/socket.h>
.br
.B #include <features.h> /* for the glibc version number */
.br
.B #if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1
.br
.B #include <netpacket/packet.h>
.br
.B #include <net/ethernet.h> /* the L2 protocols */
.br
.B #else
.br
.B #include <asm/types.h>
.br
.B #include <linux/if_packet.h>
.br
.B #include <linux/if_ether.h> /* The L2 protocols */
.br
.B #endif
.sp
.PP
.BI "packet_socket = socket(PF_PACKET, int " socket_type ", int "protocol );
.fi
.SH
packet åȤϥǥХɥ饤 (OSI 쥤 2) ٥
raw ѥåȤ뤿Ѥ롣
ѤС桼֤ʪؤξ
ץȥ⥸塼뤳ȤǽȤʤ롣
.I socket_type
ˤϡ٥إåޤ raw ѥåȤξˤ
.B SOCK_RAW
ꤷ٥إå줿ùѤߥѥåȤξˤ
.B SOCK_DGRAM
ꤹ롣
٥إå
.B sockaddr_ll
̾ΥեޥåȤǤ롣
.I protocol
IEEE 802.3 ץȥֹ
ͥåȥХȥǽΤǤ롣
ǤץȥΥꥹȤϡ롼ɥե
.B <linux/if_ether.h>
衣ץȥ
.B htons(ETH_P_ALL)
ˤȡƤΥץȥ뤬롣
褿ѥåȤΤλꤷץȥΤΤϡ
ޤ packet åȤϤ졢θǥͥ˼Ƥ
ץȥϤ롣
¸桼 ID 0 Υץ
.B CAP_NET_RAW
¤ĥץ packet åȤץǤ롣
.B SOCK_RAW
ѥåȤϡǥХɥ饤Фѥåȥǡѹ뤳Ȥʤ
Ϥ롣ѥåȤμˤϡǤ⥢ɥ쥹ϥѡ졢
ɸŪ
.B sockaddr_ll
ɥ쥹¤ΤϤ롣ѥåȤμˤϡ
桼ͿХåեˤʪؤΥإåޤޤƤ롣
ѥåȤϤΤޤˡԤ襢ɥ쥹ꤵ
եΥͥåȥɥ饤Ф˥塼롣
¾Υإåɲä褦ʥǥХɥ饤ФˤäƤ⤢롣
.B SOCK_RAW
Linux 2.0 obosolete
.B SOCK_PACKET
ȻƤ뤬ߴǤϤʤ
.B SOCK_DGRAM
Ϥ̤Υ٥ư롣ʪإåϡѥåȤ桼
Ϥ˺롣
.B SOCK_DGRAM
packet åȤ̤줿ѥåȤϡ
.B sockaddr_ll
ιԤ襢ɥ쥹ξ˴ŤŬڤʪؤΥإåղäƤ
塼롣
ǥեȤǤϻꤷץȥ뷿ΥѥåȤϤ٤ packet
åȤ롣ΥեΥѥåȤ
ˤϡ
.B struct sockaddr_ll
˥ɥ쥹ꤷ
.BR bind (2)
ƤӡѥåȤΥե˥Хɤ롣
ХŪˤ
.B sll_protocol
.B sll_ifindex
γƥɥ쥹եɤѤ롣
.BR connect (2)
packet åȤǤϥݡȤƤʤ
.B MSG_TRUNC
ե饰
.BR recvmsg (2)
Ϥȡ(Хåե礭äȤƤ)˼ºݤ̿줿
ѥåȤĹ֤
.SH ɥ쥹Υ
sockaddr_ll ϥǥХΩʪؤΥɥ쥹Ǥ롣
.RS
.nf
.ta 4n 20n 35n
struct sockaddr_ll {
unsigned short sll_family; /* Always AF_PACKET */
unsigned short sll_protocol; /* Physical layer protocol */
int sll_ifindex; /* Interface number */
unsigned short sll_hatype; /* Header type */
unsigned char sll_pkttype; /* Packet type */
unsigned char sll_halen; /* Length of address */
unsigned char sll_addr[8]; /* Physical layer address */
};
.ta
.fi
.RE
.B sll_protocol
ɸŪʥͥåȥץȥΥפǡ
ͥåȥХȥǵҤ롣
롼ɥե
.B linux/if_ether.h
Ƥ롣
줬åȤΥץȥΥǥեȤȤʤ롣
.B sll_ifindex
ϤΥե interface index Ǥ
.RB ( netdevice (7)
) 0 ǤդΥե˥ޥå (ХɤΤߤͭ)
.B sll_hatype
ARP Υס
롼ɥե
.B linux/if_arp.h
Ƥ롣
.B sll_pkttype
ϥѥåȤΥפǤ롣Ǥ륿פϰʲΤ줫Ǥ:
.B PACKET_HOST
ۥȸΥѥåȡ
.B PACKET_BORADCAST
ʪؤΥ֥ɥ㥹ȥѥåȡ
.B PACKET_MULTICAST
ʪؤΥޥ㥹ȥɥ쥹ѥåȡ
.B PACKET_OTHERHOST
¾ΥۥȤ˸줿ѥåȤΤ
̵̥⡼ (promiscuous mode: ) ΥǥХɥ饤Ф˥å줿Ρ
.B PACKET_OUTGOING
ۥȤȯ졢
packet åȤ˥롼ץХåƤѥåȡ
Υפ̣ĤΤϼΤߤǤ롣
.B sll_addr
.B sll_halen
ʪ (Ĥޤ IEEE 802.3) ɥ쥹ȤĹǤ롣
̩ʲϥǥХ˰¸롣
ѥåȤϡ
.BR sll_family ,
.BR sll_addr ,
.BR sll_halen ,
.B sll_ifindex
ꤹнʬǤ롣
¾Υեɤ 0 ˤƤ٤Ǥ롣
.B sll_hatype
.B sll_pkttype
ϼѥåȤξåȤ롣
.B sll_protocol
.B sll_ifindex
ϥХɤΤ˻Ȥ롣
.SH åȥץ
packet åȤѤȡʪؤΥޥ㥹Ȥ
̵̥⡼ɤꤹ뤳ȤǤ롣ˤ
SOL_PACKET ȰʲΥץΤ줫ꤷ
.BR setsockopt (2)
Ƥ٤Ф褤
⤦ĤΥץϡХɤɲä
.B PACKET_ADD_MEMBERSHIP
Ǥꡢ
.B PACKET_DROP_MEMBERSHIP
Ǥ롣Ϥ
.B packet_mreq
¤Τ˼롣
.RS
.nf
.ta 4n 20n 35n
struct packet_mreq
{
int mr_ifindex; /* interface index */
unsigned short mr_type; /* action */
unsigned short mr_alen; /* address length */
unsigned char mr_address[8]; /* physical layer address */
};
.ta
.fi
.RE
.B mr_ifindex
ϡơѹե
եǥåǤ롣
.B mr_type
ѥϼ¹Ԥưꤹ:
.B PACKET_MR_PROMISC
϶ͭƤΤƤΥѥåȤǤ褦ˤ
(Ф ``̵̥⡼ (promiscuous mode)'' ȤΤ)
.B PACKET_MR_MULTICAST
ϤΥåȤ
.B mr_address
.B mr_alen
ǻꤵʪؤΥޥ㥹ȥ֥롼פ˥Хɤ롣
.B PACKET_MR_ALLMULTI
socket up ˤơΥեã٤Ƥ
ޥ㥹ȥѥåȤǤ褦ˤ롣
Τ餢 ioctl ˲ä
.BR SIOCSIFFLAGS ,
.BR SIOCADDMULTI ,
.B SIOCDELMULTI
ƱŪѤ뤳ȤǤ롣
.SH IOCTL
.B SIOCGSTAMP
ѤȺǸ˼ѥåȤΥॹפ뤳ȤǤ롣
.B struct timeval
Ǥ롣
äơ
.BR netdevice (7)
.BR socket (7)
Ƥɸ ioctl
٤ packet åȤˤǽǤ롣
.SH 顼
packet åȤϡѥåȤǥХɥ饤ФϤȤ
顼ʤٱ䥨顼 (pending error)
˴ؤ복ǰϻäƤʤ
.SH ܿ
Linux 2.0 Ǥϡ packet åȤͣˡ
.BI "socket(PF_INET, SOCK_PACKET, " protocol )\fR
Ƥ֤ǤäϤޤݡȤƤ뤬
ѤʤȤ侩롣Ĥˡμʰ㤤ϡ
.B SOCK_PACKET
Ǥϥեλ˸Ť
.B struct sockaddr_pkt
ѤǤ롣ˤʪؤΩʤ
.RS
.nf
.ta 4n 20n 35n
struct sockaddr_pkt
{
unsigned short spkt_family;
unsigned char spkt_device[14];
unsigned short spkt_protocol;
};
.ta
.fi
.RE
.B spkt_family
ϥǥХΥס
.B spkt_protocol
.B <sys/if_ether.h>
Ƥ IEEE 802.3 ץȥ륿ס
.B spkt_device
ϥǥХ̾ 0 ǽüʸͿ (: eth0) Ǥ롣
ι¤Τ obsolete Ǥꡢ
ɤˤѤ٤Ǥʤ
.SH
ܿɬפʥץǤ
.BR pcap (3)
.B PF_PACKET
ѤۤɤˡǤ
.B PF_PACKET
εǽ٤ƤѤ뤳ȤϤǤʤ
.B SOCK_DGRAM
packet åȤ IEEE 802.3 ե졼 IEEE 802.2 LLC إå
ѡ褦Ȼߤʤ
.B ETH_P_802_3
ץȥ˻ꤵȡͥ 802.3 ե졼
length եɤ˽ࡣ
˽ѥåȤ뤿ˤϥ桼 LLC إå
Ϳɬפ롣夷 802.3 ѥåȤǤϡ
DSAP/SSAP protocol γƥեɤ¿Ų (multiplex) Ƥʤ
ˤ LLC إå֤줿
.B ETH_P_802_2
ץȥȤͿƤ롣äơ
.B ETH_P_802_3
˥Хɤ뤳ȤϤǤʤ
.B ETH_P_802_2
˥ХɤʬȤǥץȥ¿ŲԤȡ
ΥǥեȤϡץȥ
ɸ Ethernet DIX encapsulation Ǥ롣
packet åȤϤ firewall chain ˽ʤ
.SH 顼
.TP
.B ENETDOWN
ե up Ǥʤ
.TP
.B ENOTCONN
եɥ쥹Ϥʤä
.TP
.B ENODEV
ǥХ̾뤤ϥեɥ쥹ǻꤵ줿
եǥå
.TP
.B EMSGSIZE
ѥåȤե MTU 礭
.TP
.B ENOBUFS
ѥåȤƤ꤬ʤ
.TP
.B EFAULT
桼Ϥꥢɥ쥹
.TP
.B EINVAL
.TP
.B ENXIO
եɥ쥹ʥեǥåޤޤƤ롣
.TP
.B EPERM
ԤΤɬפʸ¤桼äƤʤ
.TP
.B EADDRNOTAVAIL
ʥޥ㥹ȥ롼ץɥ쥹Ϥ줿
.TP
.B ENOENT
ѥåȤĤƤʤ
ʾ˲ä٥Υɥ饤Фǥ顼ǽ롣
.SH С
.B PF_PACKET
Linux 2.2 οǽǤ롣ŤС Linux Ǥ
.B SOCK_PACKET
ΤߤݡȤƤ
.SH Х
glibc 2.1 ˤ
.B SOL_PACKET
ʤȤƤϡʲѤɤ
.RS
.nf
#ifndef SOL_PACKET
#define SOL_PACKET 263
#endif
.fi
.RE
ϿС glibc
libc5 ΥƥˤⰭƶϵڤܤʤ
IEEE 802.2/803.3 LLC μ갷ϥХȹͤƤɤ
åȥե륿ҤƤʤ
.I MSG_TRUNC
recvmsg ĥϽ hack ǡå֤٤Ǥ롣
ΤȤ SOCK_DGRAM ͳΥѥåȤθ襢ɥ쥹ˡʤ
.SH
man ڡ Matthew Wilcox νϤΤȤ Andi Kleen
Linux 2.2 PF_PACKET ϡ
Alan Cox ΥɤȤˤ Alexey Kuznetsov
.SH Ϣ
.BR ip (7),
.BR socket (7),
.BR socket (2),
.BR raw (7),
.BR pcap (3)
ɸ IP Ethernet encapsulation ˴ؤ RFC 894 ˤ롣
IEEE 802.3 IP encapsulation ˴ؤ RFC 1700 ˤ롣
ʪؤΥץȥ˴ؤ뵭Ҥ
.I <linux/if_ether.h>
롼ɥեˤ롣
|