From 75498c0dd7682bae7787c4e2cd8d2680fa2b9c45 Mon Sep 17 00:00:00 2001
From: Micael Karlberg <bmk@erlang.org>
Date: Fri, 20 Jul 2018 13:00:22 +0200
Subject: [socket-nif] Add support for socket (level socket) option(s)
 [rcv|snd]lowat

Added support for socket level socket option RCVLOWAT and SNDLOWAT.
These are both a little strange, at least on Linux. See the man
pages for more info. For instance, sndlowat cannot be set on Linux.

OTP-14831
---
 erts/doc/src/socket_usage.xml | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'erts/doc/src/socket_usage.xml')

diff --git a/erts/doc/src/socket_usage.xml b/erts/doc/src/socket_usage.xml
index 221561c3e2..9ea585694d 100644
--- a/erts/doc/src/socket_usage.xml
+++ b/erts/doc/src/socket_usage.xml
@@ -179,6 +179,13 @@
 	<cell>yes</cell>
 	<cell>none</cell>
       </row>
+      <row>
+	<cell>rcvlowat</cell>
+	<cell>non_neg_integer()</cell>
+	<cell>yes</cell>
+	<cell>yes</cell>
+	<cell>none</cell>
+      </row>
       <row>
 	<cell>rcvtimeo</cell>
 	<cell>timeval()</cell>
@@ -202,11 +209,18 @@
       </row>
       <row>
 	<cell>sndbuf</cell>
-	<cell>integer()</cell>
+	<cell>non_neg_integer()</cell>
 	<cell>yes</cell>
 	<cell>yes</cell>
 	<cell>none</cell>
       </row>
+      <row>
+	<cell>sndlowat</cell>
+	<cell>non_neg_integer()</cell>
+	<cell>yes</cell>
+	<cell>yes</cell>
+	<cell>not changeable on Linux</cell>
+      </row>
       <row>
 	<cell>sndtimeo</cell>
 	<cell>timeval()</cell>
-- 
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