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Updated the included libpcap to 1.5.3

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jay
2014-06-06 10:43:17 +00:00
parent 5f27fb12a6
commit d8071c0352
98 changed files with 11651 additions and 7008 deletions
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45
libpcap/pcap_loop.3pcap
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@@ -84,7 +84,7 @@ processed when reading a ``savefile''.
\fIcnt\fP
was 0 was undefined; different platforms and devices behaved
differently, so code that must work with older versions of libpcap
should use \-1, nor 0, as the value of
should use \-1, not 0, as the value of
\fIcnt\fP.)
.ft R
.PP
@@ -115,12 +115,48 @@ and the packet data are not to be freed by the callback routine, and are
not guaranteed to be valid after the callback routine returns; if the
code needs them to be valid after the callback, it must make a copy of
them.
.PP
The bytes of data from the packet begin with a link-layer header. The
format of the link-layer header is indicated by the return value of the
.B pcap_datalink()
routine when handed the
.B pcap_t
value also passed to
.B pcap_loop()
or
.BR pcap_dispatch() .
.I http://www.tcpdump.org/linktypes.html
lists the values
.B pcap_datalink()
can return and describes the packet formats that
correspond to those values. The value it returns will be valid for all
packets received unless and until
.B pcap_set_datalink()
is called; after a successful call to
.BR pcap_set_datalink() ,
all subsequent packets will have a link-layer header of the type
specified by the link-layer header type value passed to
.BR pcap_set_datalink() .
.PP
Do
.B NOT
assume that the packets for a given capture or ``savefile`` will have
any given link-layer header type, such as
.B DLT_EN10MB
for Ethernet. For example, the "any" device on Linux will have a
link-layer header type of
.B DLT_LINUX_SLL
even if all devices on the system at the time the "any" device is opened
have some other data link type, such as
.B DLT_EN10MB
for Ethernet.
.SH RETURN VALUE
.B pcap_loop()
returns 0 if
.I cnt
is exhausted, \-1 if an error occurs, or \-2 if the loop terminated due
to a call to
is exhausted or if, when reading from a ``savefile'', no more packets
are available. It returns \-1 if an error occurs or \-2 if the loop
terminated due to a call to
.B pcap_breakloop()
before any packets were processed.
It does
@@ -154,4 +190,5 @@ may be called with
.I p
as an argument to fetch or display the error text.
.SH SEE ALSO
pcap(3PCAP), pcap_geterr(3PCAP), pcap_breakloop(3PCAP)
pcap(3PCAP), pcap_geterr(3PCAP), pcap_breakloop(3PCAP),
pcap_datalink(3PCAP)