From 1a2e88acd6759ea99fb4d125f67d3e3181634803 Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Wed, 29 Mar 2017 08:29:48 +0200 Subject: [PATCH] tcp.7: Note indications for OOB data given by select(2) and poll(2) Signed-off-by: Michael Kerrisk --- man7/tcp.7 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/man7/tcp.7 b/man7/tcp.7 index 529246145..fe3a30710 100644 --- a/man7/tcp.7 +++ b/man7/tcp.7 @@ -220,6 +220,14 @@ flag is set for or .BR recvmsg (2). +When out-of-band data is present, +.BR select (2) +indicates the file descriptor as having an exceptional condition and +.I poll (2) +indicates a +.B POLLPRI +event. + Linux 2.4 introduced a number of changes for improved throughput and scaling, as well as enhanced functionality. Some of these features include support for zero-copy