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-rw-r--r--lib/kernel/doc/src/gen_sctp.xml54
1 files changed, 47 insertions, 7 deletions
diff --git a/lib/kernel/doc/src/gen_sctp.xml b/lib/kernel/doc/src/gen_sctp.xml
index 688cd0f78f..418bfae4b8 100644
--- a/lib/kernel/doc/src/gen_sctp.xml
+++ b/lib/kernel/doc/src/gen_sctp.xml
@@ -45,7 +45,15 @@
SUSE Linux Enterprise Server 10 (x86_64) kernel 2.6.16.27-0.6-smp,
with lksctp-tools-1.0.6, briefly on Solaris 10, and later on
SUSE Linux Enterprise Server 10 Service Pack 1 (x86_64)
- kernel 2.6.16.54-0.2.3-smp with lksctp-tools-1.0.7.</p>
+ kernel 2.6.16.54-0.2.3-smp with lksctp-tools-1.0.7,
+ and later also on FreeBSD 8.2.
+ </p>
+ <p>
+ This module was written for one-to-many style sockets
+ (type <c>seqpacket</c>). With the addition of
+ <seealso marker="#peeloff/2">peeloff/2</seealso>, one-to-one style
+ sockets (type <c>stream</c>) were introduced.
+ </p>
<p>Record definitions for the <c>gen_sctp</c> module can be found using:</p>
<pre> -include_lib("kernel/include/inet_sctp.hrl"). </pre>
<p>These record definitions use the "new" spelling 'adaptation',
@@ -254,15 +262,19 @@
</desc>
</func>
<func>
- <name name="listen" arity="2"/>
+ <name name="listen" arity="2" clause_i="1"/>
+ <name name="listen" arity="2" clause_i="2"/>
<fsummary>Set up a socket to listen.</fsummary>
<desc>
<p>Sets up a socket to listen on the IP address and port number
- it is bound to. <c><anno>IsServer</anno></c> must be <c>true</c>
- or <c>false</c>.
- In the contrast to TCP, in SCTP there is no listening queue length.
- If <c><anno>IsServer</anno></c> is <c>true</c> the socket accepts new associations, i.e.
- it will become an SCTP server socket.</p>
+ it is bound to.</p>
+ <p>For type <c>seqpacket</c> sockets (the default)
+ <c><anno>IsServer</anno></c> must be <c>true</c> or <c>false</c>.
+ In the contrast to TCP, in SCTP there is no listening queue length.
+ If <c><anno>IsServer</anno></c> is <c>true</c> the socket accepts new associations, i.e.
+ it will become an SCTP server socket.</p>
+ <p>For type <c>stream</c> sockets <anno>Backlog</anno> defines
+ the backlog queue length just like in TCP.</p>
</desc>
</func>
<func>
@@ -295,12 +307,40 @@
is used. In particular, the socket is opened in
<seealso marker="#option-binary">binary</seealso> and
<seealso marker="#option-active">passive</seealso> mode,
+ with <anno>SockType</anno> <c>seqpacket</c>,
and with reasonably large
<seealso marker="#option-sndbuf">kernel</seealso> and driver
<seealso marker="#option-buffer">buffers.</seealso></p>
</desc>
</func>
<func>
+ <name name="peeloff" arity="2"/>
+ <fsummary>
+ Peel off a type <c>stream</c> socket from a type <c>seqpacket</c> one
+ </fsummary>
+ <desc>
+ <p>
+ Branch off an existing association <anno>Assoc</anno>
+ in a socket <anno>Socket</anno> of type <c>seqpacket</c>
+ (one-to-may style) into
+ a new socket <anno>NewSocket</anno> of type <c>stream</c>
+ (one-to-one style).
+ </p>
+ <p>
+ The existing association argument <anno>Assoc</anno>
+ can be either a
+ <seealso marker="#record-sctp_assoc_change">
+ #sctp_assoc_change{}
+ </seealso>
+ record as returned from e.g
+ <seealso marker="#recv-2">recv/*</seealso>,
+ <seealso marker="#connect-5">connect/*</seealso> or
+ from a listening socket in active mode. Or it can be just
+ the field <c>assoc_id</c> integer from such a record.
+ </p>
+ </desc>
+ </func>
+ <func>
<name name="recv" arity="1"/>
<name name="recv" arity="2"/>
<fsummary>Receive a message from a socket</fsummary>