'\" t
.\" Don't change the first line, it tells man that we need tbl.
.\" 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: raw.7,v 1.6 1999/06/05 10:32:08 freitag Exp $
.\"
.\" Japanese Version Copyright (c) 1999 NAKANO Takeo all rights reserved.
.\" Translated 1999-12-06, NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated 2007-01-05, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.43
.\"
.\"WORD         link level header(s)    󥯥٥إå
.\"WORD         effective user ID       ¸桼 ID
.\"WORD         capability              
.\"WORD         route                   (ѥåȤ) ϩ
.\"
.TH RAW  7 1998-10-02 "Linux" "Linux Programmer's Manual"
.SH ̾
raw, SOCK_RAW \- Linux  IPv4 raw å
.SH 
.B #include <sys/socket.h>
.br
.B #include <netinet/in.h>
.br
.BI "raw_socket = socket(PF_INET, SOCK_RAW, int " protocol );
.SH 
raw åȤȤȡ IPv4 ץȥ桼֤
Ǥ褦ˤʤ롣 raw åȤϡ󥯥٥إå
ޤޤʤ raw ǡǤ롣

IPv4 쥤ϡäƤ륽åȤ
.B IP_HDRINCL
åȥץͭˤʤäƤʤС
ѥåȤȤ IP إå롣
.B IP_HDRINCL
ץͭˤʤäƤȤϡѥåȤˤ
IP إåޤޤƤʤФʤʤ
ˤϡ IP إåϾ˥ѥåȤ˴ޤޤƤ롣

¸桼 ID  0 Υץ
.B CAP_NET_RAW
¤ĥץ raw åȤ򥪡ץ󤹤뤳ȤǤ롣

 raw åȤ˻ꤵ줿
.I protocol
ֹ˥ޥåƤΥѥåȤȥ顼ȤΥåȤϤ롣
ĤƤץȥΥꥹȤ RFC\ 1700 γֹ
.BR getprotobyname (3)
򸫤衣

.B IPPROTO_RAW
ΥץȥϰۤΤ
.B IP_HDRINCL
ͭˤΤǡ
Ϥ줿إåǻꤵ줿 IP ץȥǤ롣
.B IPPROTO_RAW
ͳǤΤ IP ץȥμϡ
raw åȤѤƤϹԤʤ
.TS
tab(:) allbox;
c s
l l.
IP إåեɡ \fBIP_HDRINCL\fP ˤäѹ롣
IP å:ѹ롣
ɥ쥹:ͤ 0 λѹ롣
ѥå ID:ͤ 0 λѹ롣
ΤĹ:롣
.TE
.sp
.PP
.\"NAKANO Aloways filled in. Ȥ?
.B IP_HERINCL
ꤵƤơ IP إå
0 Ǥʤ襢ɥ쥹Ƥϡ
襢ɥ쥹ѥåȤηϩΤѤ롣
.B MSG_DONTROUTE
ꤵƤˤϡ
襢ɥ쥹ϥʥ󥿡ե򻲾ȤΤǤʤФʤʤ
ʤȡ롼ƥ󥰥ơ֥λȤϤˤԤ뤬
ȥɬפʷϩ̵뤵롣
.\"NAKANO ʥͥåȤʤΤ󥿡եʤΤ

.B IP_HDRINCL
åȤƤʤС
raw åȤ IP إåץ
.BR setsockopt (2)
Ѥꤹ뤳ȤǤ롣ܺ٤ʾ
.BR ip (7)
򸫤衣

Linux 2.2 Ǥϡ IP إåƤΥեɤȥץȤ
IP åȥץˤäǤ롣ä
raw åȤɬפˤʤΤϡץȥ߷פ礫
桼󥿡եʤץȥ (ICMP ʤ) 򰷤
¤롣

ѥåȤϡȤޤץȥ˥ХɤƤ
raw åȤϤ졢
θ¾Υץȥϥɥ (ͥΥץȥ⥸塼ʤ)
Ϥ롣
.SS ɥ쥹Υեޥå
raw åȤɸ
.I sockaddr_in
ɥ쥹¤ΤѤ롣
.BR ip (7)
ǤʤƤ롣
.I sin_port
եɤ IP ץȥֹλѤ뤳ȤǤ뤬
Linux 2.2 ǤϤˤ̵뤵졢 0 ˤ
(Х ι򻲾)
ѥåȤФƤϡ
.I sin_port
ϤΥѥåȤΥץȥ˥åȤ롣
Ѥ뤳ȤΤǤ IP ץȥϡ󥯥롼ɥե
.I <netinet/in.h>
򸫤衣
.SS åȥץ
raw åȤΥץϡ
.B IPPROTO_RAW
.\" ⤷ Linux Ǥ .I SOL_RAW
եߥ꡼ե饰Ϳ
.BR setsockopt (2)
Ƥ٤Ǥ
.BR getsockopt (2)
Ƥ٤мǤ롣
.TP
.B ICMP_FILTER
.B IPPROTO_ICMP
ץȥ˥Хɤ줿 raw åȤΤüʥե륿ͭˤ롣
ͤ ICMP åΥפ줾Фơɤե륿
뤫ɽӥåȥåȤǤ롣ǥեȤǤ
ICMP åե륿ʤ
.PP
ˡǡॽåȤ˻ȤƤ
.BR ip (7)
.B SOL_IP
åȥץ󤬥ݡȤƤ롣
.SS 顼
ͥåȥ顼桼ϤΤϡ
åȤ³Ѥߤξ礫
.B IP_RECVERR
ե饰ͭˤʤäƤ˸¤롣
³ѤߤΥåȤФƤϡ
.B EMSGSIZE

.B EPROTO
Ϥ (ߴΤ)
.B IP_RECVERR
ꤹȡƤΥͥåȥ顼顼塼¸롣
.SH 顼
.TP
.B EACCES
桼 broadcast ե饰ꤷƤʤåȤѤ
֥ɥ㥹ȥɥ쥹ԤȤ
.TP
.B EFAULT
ʥꥢɥ쥹Ϳ줿
.TP
.B EINVAL
ʤ
.TP
.B EMSGSIZE
ѥåȤ礭롣 Path MTU Discoverry ͭˤʤäƤ
.RB ( IP_MTU_DISCOVER
åȥե饰) ѥåȤΥ IPv4 ǵƤ
ѥåȥκ 64KB ۤƤ롣
.TP
.B EOPNOTSUPP
åȸƤӽФʥե饰
.RB ( MSG_OOB
ʤ) Ϥ줿
.TP
.B EPERM
桼 raw åȤ򥪡ץ󤹤븢¤äƤʤ
¹ԥ桼 ID  0 Υץ
.B CAP_NET_RAW
°ĥץԤȤǤ롣
.TP
.B EPROTO
ѥ᡼𤹤 ICMP 顼ä
.SH С
.B IP_RECVERR

.B ICMP_FILTER
 Linux 2.2 о줷 Linux ǤγĥǤꡢ
ܿɬפʥץǤѤ٤Ǥʤ

Linux 2.0 Ǥ
.B SO_BSDCOMPAT
åȥץ򥻥åȤȡ
BSD  raw åȤˤХ˸ߴ뤳ȤǤ \(em
Linux 2.2 ʹߤǤϡΥץϤϤϤʤ
.SH 
ǥեȤǤϡraw åȤ Path MTU Discovery Ԥ
Ĥޤꡢͥΰ IP ɥ쥹 MTU (Maximum Transmission Unit;
žñ) Ͽraw ѥåȤν񤭹ߤ MTU Ķ
.B EMSGSIZE
֤
.B EMSGSIZE
֤줿硢ץꥱϥѥåȥ򾮤٤Ǥ롣
åȥץ
.B IP_MTU_DISCOVER
ޤ
.I ip_no_pmtu_disc
sysctl Ȥä Path MTU Discovery ̵ˤ뤳ȤǤ
(ܺ٤
.BR ip (7)
򻲾)
Path MTU Discovery ̵ˤϡѥåȥ
󥿥ե MTU 礭 raw åȤϤΥѥåȤ
ե饰ȲФ롣
ʤ顢ǽȿͳ Path MTU Discovery 
̵ˤΤϿ侩Ǥʤ

.BR bind (2)
ƥॳѤȡ
raw åȤ
Υ륢ɥ쥹˥Хɤ뤳ȤǤ롣
ΥХɤƤʤϡꤷ IP ץȥ
٤ƤΥѥåȤ롣
ˡ
.B SO_BINDTODEVICE
Ѥ raw åȤΥͥåȥǥХ
Хɤ뤳ȤǤ롣
.BR socket (7)
򸫤衣

.B IPPROTO_RAW
åȤѤǤ롣⤷ɤƤ⤹٤Ƥ IP ѥåȤ
ϡ
.BR packet (7)
åȤ
.B ETH_P_IP
ץȥѤ뤳ȡ
packet åȤ raw åȤΤ褦
IP ե饰ȤƹʤȤա

datagram åȤФ뤹٤Ƥ ICMP ѥåȤϡ
ΥåȤФ
.B IP_RECVERR
Ѥۤɤ礬¿
.BR ip (7)
򸫤衣

raw åȤϡ Linux Τ٤Ƥ IP ץȥ뤳ȤǤ롣
ICMP  TCP Τ褦ˡͥ˥ץȥ⥸塼Ĥ褦
ΤǽǤ롣ξˤϡѥåȤϥͥ⥸塼
raw åȤξϤ (raw åȤʣФ줾Ϥ)
ܿɬפʥץǤϤεǽ˰¸٤ǤϤʤ
¾¿ BSD ˤ륽åȤμǤϤˤ¤롣

Linux ϥ桼Ϥ줿إå褷ѹʤ (
.B IP_HDRINCL
ˤ褦ˡ 0 򤤤Ĥ)
¾¿ raw åȤμǤϰۤʤ롣

̤ raw åȤϰܿʤȤ¿Τǡ
ܿɬפʥץǤ򤱤٤Ǥ롣

raw åȤؤǤϡ IP ץȥ
.I sin_port
ǤʤФʤʤεǽ Linux 2.2 ǤϻȤʤʤä
.B IP_HDRINCL
ѤƱͤΤȤ¸Ǥ롣
.SH Х
Ʃץ (transparent proxy) ĥˤĤƤϵҤƤʤ

.B IP_HDRINCL
ץ󤬥åȤƤȥǡϥե饰Ȳ줺
󥿡ե MTU 礭¤롣

Ѥ IP ץȥ
.I sin_port
ˤƤǽ Linux 2.2 Ȥʤʤä
åȤ˥ХɤƤץȥ뤫ǽ
.BR socket (2)
ˤäƻꤵ줿ץȥ뤬Ѥ롣
.\" .SH 
.\"  man ڡ Andi Kleen 񤤤
.SH Ϣ
.BR recvmsg (2),
.BR sendmsg (2),
.BR capabilities (7),
.BR ip (7),
.BR socket (7)

ѥ MTU ȯ˴ؤ
.B RFC\ 1191
ˤ

IP ץȥ˴ؤƤ
.B RFC\ 791
ȥ󥯥롼ɥե
.I <linux/ip.h>
򻲾ȡ