Commit Graph

24 Commits

Author SHA1 Message Date
Joel Dahl
c60bda17f2 Updates for netgraph node manual pages.
Discussed with:	glebius
Submitted by:	Mamontov Roman <mr.xanto@gmail.com>
2012-11-13 20:41:36 +00:00
Giorgos Keramidas
7e7c1896a0 Sometimes, depending on the bpf filter rules used in $PATTERN,
the example script of the manpage feeds awk(1) with values larger
than UINT32_MAX.  Then awk prints a negative value, and this
messes up $BPFPROG.  Trying to load the resulting bpf byte codes
with ngctl then fails.

For example, the output for PATTERN="udp and dst net 255.255.0.0/16"
should be (all in one line):

    bpf_prog_len=10
    bpf_prog=[
      { code=40 jt=0 jf=0 k=12 }
      { code=21 jt=7 jf=0 k=34525 }
      { code=21 jt=0 jf=6 k=2048 }
      { code=48 jt=0 jf=0 k=23 }
      { code=21 jt=0 jf=4 k=17 }
      { code=32 jt=0 jf=0 k=30 }
      { code=84 jt=0 jf=0 k=4294901760 }
      { code=21 jt=0 jf=1 k=4294901760 }
      { code=6 jt=0 jf=0 k=8192 }
      { code=6 jt=0 jf=0 k=0 }
    ]

The two k=4294901760 values are displayed as k=-2147483648 by awk.

Replace the awk script of the manpage example with a slower but
safer version, that doesn't really attempt to convert the byte
code printed by tcpdump from string to number and back.

PR:		docs/123255
Submitted by:	Eugenio Maffione, eugenio.maffione at telecomitalia.it
MFC after:	3 days
2009-01-30 19:33:04 +00:00
Gleb Smirnoff
c137427647 - Sync with ng_bpf.h, rev. 1.7
- Remove extra brace.

Submitted by:	Anton Yuzhaninov <citrin rambler-co.ru>
2007-05-30 09:05:49 +00:00
Ruslan Ermilov
fbad9e2d95 Verify that SYNOPSIS section compiles. 2005-02-05 11:31:31 +00:00
Ruslan Ermilov
9cbda59000 Sort sections. 2005-01-21 08:36:40 +00:00
Ruslan Ermilov
5203edcdc5 Mechanically kill hard sentence breaks and double whitespaces. 2004-07-03 18:29:24 +00:00
Hartmut Brandt
89624a3490 Replace all uses of the old netgraph constants NG_*LEN by the new
constants NG_*SIZ that include the trailing NUL byte. This change
is mostly mechanical except for the replacement of a couple of snprintf()
and sprintf() calls with strlcpy.
2003-11-15 15:26:35 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Jens Schweikhardt
c1f3e4bf21 Removed whitespace at end-of-line; no content changes. I simply did
cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//'

BTW, what editors are the culprits? I'm using vim and it shows
me whitespace at EOL in troff files with a thick blue block...

Reviewed by:	Silence from cvs diff -b
MFC after:	7 days
2001-07-14 19:41:16 +00:00
Ruslan Ermilov
3d45e180f4 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 15:31:11 +00:00
Ruslan Ermilov
5521ff5a4d mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2). 2001-07-06 16:46:48 +00:00
Maxim Sobolev
1cdc139280 Correct cross-references:
setsockopt.3 --> setsockopt.2
  syslog.8 --> syslogd.8
  tcpdump.8 --> tcpdump.1

MFC after:	1 week
2001-06-05 12:50:33 +00:00
Archie Cobbs
20d7cd248d Ensure the generated BPF in the example deliver the whole packet. 2001-05-19 17:47:51 +00:00
Archie Cobbs
3cb991ad2c Fix typo. 2001-03-30 20:32:05 +00:00
Ruslan Ermilov
28f2bdd8cc mdoc(7) police: well-known section name is EXAMPLES, not EXAMPLE. 2001-02-19 10:49:15 +00:00
Archie Cobbs
30f6482c54 Slight improvement to previous checkin. 2001-02-19 04:06:30 +00:00
Archie Cobbs
78c8722845 Add an example showing how to configure a node from the command line. 2001-02-19 04:00:52 +00:00
Ruslan Ermilov
3136363f3e Prepare for mdoc(7)NG. 2000-12-29 09:18:45 +00:00
Jeroen Ruigrok van der Werven
eddc45e797 Update @freebsd.org email addresses to @FreeBSD.org as is the
precedent.
2000-10-26 15:30:44 +00:00
Julian Elischer
ed2f9d4e88 Change archie's and my email addresses from Whistle.com to FreeBSD.org 2000-10-24 18:01:45 +00:00
Archie Cobbs
e653127edf NGM_BPF_{G,S}ET_FILTER should be NGM_BPF_{G,S}ET_PROGRAM. 2000-09-19 21:34:43 +00:00
Archie Cobbs
bec35b9a5f Move netgraph node type man pages from section 8 to section 4. 2000-05-04 17:54:37 +00:00
Julian Elischer
5129159789 Manual page style work.
Submitted by:	Alexey Zelkin <phantom@FreeBSD.org>
thanks!
1999-12-21 01:25:21 +00:00
Archie Cobbs
92a3e5521f New netgraph node type, ng_bpf(8). This node type allows you to
apply bpf(4) filters to data travelling through a netgraph network.
1999-12-03 21:21:49 +00:00