From: Steve Wise <swise@opengridcomputing.com>
Date: Fri, 25 Jul 2014 14:11:33 +0000 (-0500)
Subject: RDMA/iwcm: Use a default listen backlog if needed
X-Git-Tag: v3.2.64~182
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b86a5f240f3ca73297cc918b49a70daa02f2d48a;p=pandora-kernel.git

RDMA/iwcm: Use a default listen backlog if needed

commit 2f0304d21867476394cd51a54e97f7273d112261 upstream.

If the user creates a listening cm_id with backlog of 0 the IWCM ends
up not allowing any connection requests at all.  The correct behavior
is for the IWCM to pick a default value if the user backlog parameter
is zero.

Lustre from version 1.8.8 onward uses a backlog of 0, which breaks
iwarp support without this fix.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
[bwh: Backported to 3.2: use register_net_sysctl_table()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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