From: Ariel Nahum <arieln@mellanox.com>
Date: Thu, 22 May 2014 08:00:19 +0000 (+0300)
Subject: IB/iser: Fix a possible race in iser connection states transition
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~68^2^4~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66d4e62d27875f3ae417e3b73396e290bb184b5c;p=pandora-kernel.git

IB/iser: Fix a possible race in iser connection states transition

In some circumstances (multiple targets), RDMA_CM ESTABLISHED event
and ep_disconnect may race. In this case, the iser connection state
may transition to UP (after ep_disconnect transitioned it to
TERMINATING), while the connection is being torn down.

Upon RDMA_CM event ESTABLISHED we allow iser connection state to
transition to UP only from PENDING. We also make sure to protect this
state change (done under the connection lock).

Signed-off-by: Ariel Nahum <arieln@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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