This is a note to let you know that I've just added the patch titled
IB/cma: Fix RDMA port validation for iWarp
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-cma-fix-rdma-port-validation-for-iwarp.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 649367735ee5dedb128d9fac0b86ba7e0fe7ae3b Mon Sep 17 00:00:00 2001
From: Matan Barak <matanb@xxxxxxxxxxxx>
Date: Thu, 7 Jan 2016 11:19:29 +0200
Subject: IB/cma: Fix RDMA port validation for iWarp
From: Matan Barak <matanb@xxxxxxxxxxxx>
commit 649367735ee5dedb128d9fac0b86ba7e0fe7ae3b upstream.
cma_validate_port wrongly assumed that Ethernet devices are RoCE
devices and thus their ndev should be matched in the GID table.
This broke the iWarp support. Fixing that matching the ndev only if
we work on a RoCE port.
Cc: <stable@xxxxxxxxxxxxxxx> # 4.4.x-
Fixes: abae1b71dd37 ('IB/cma: cma_validate_port should verify the port
and netdevice')
Reported-by: Hariprasad Shenai <hariprasad@xxxxxxxxxxx>
Tested-by: Hariprasad Shenai <hariprasad@xxxxxxxxxxx>
Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
Reviewed-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/cma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -453,7 +453,7 @@ static inline int cma_validate_port(stru
if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port))
return ret;
- if (dev_type == ARPHRD_ETHER)
+ if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port))
ndev = dev_get_by_index(&init_net, bound_if_index);
ret = ib_find_cached_gid_by_port(device, gid, port, ndev, NULL);
Patches currently in stable-queue which might be from matanb@xxxxxxxxxxxx are
queue-4.4/ib-cma-fix-rdma-port-validation-for-iwarp.patch
queue-4.4/net-mlx4_en-choose-time-stamping-shift-value-according-to-hw-frequency.patch
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