[4.2.y-ckt stable] Patch "iser-target: Fix identification of login rx descriptor type" has been added to the 4.2.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    iser-target: Fix identification of login rx descriptor type

to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue

This patch is scheduled to be released in version 4.2.8-ckt7.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From 5fb05d611fcbbe8e33f8973ee155e100b54e4a64 Mon Sep 17 00:00:00 2001
From: Jenny Derzhavetz <jennyf at mellanox.com>
Date: Wed, 24 Feb 2016 19:23:58 +0200
Subject: iser-target: Fix identification of login rx descriptor type

commit b89a7c25462b164db280abc3b05d4d9d888d40e9 upstream.

Once connection request is accepted, one rx descriptor
is posted to receive login request. This descriptor has rx type,
but is outside the main pool of rx descriptors, and thus
was mistreated as tx type.

Signed-off-by: Jenny Derzhavetz <jennyf at mellanox.com>
Signed-off-by: Sagi Grimberg <sagig at mellanox.com>
Signed-off-by: Nicholas Bellinger <nab at linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/infiniband/ulp/isert/ib_isert.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 85761b7..50933954 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -2072,7 +2072,8 @@ is_isert_tx_desc(struct isert_conn *isert_conn, void *wr_id)
 	void *start = isert_conn->rx_descs;
 	int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->rx_descs);

-	if (wr_id >= start && wr_id < start + len)
+	if ((wr_id >= start && wr_id < start + len) ||
+	    (wr_id == isert_conn->login_req_buf))
 		return false;

 	return true;
--
2.7.4