This is a note to let you know that I've just added the patch titled
IB/mlx4: Fix wrong usage of IPv4 protocol for multicast attach/detach
to the 3.19-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-mlx4-fix-wrong-usage-of-ipv4-protocol-for-multicast-attach-detach.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e9a7faf11af94957e5107b40af46c2e329541510 Mon Sep 17 00:00:00 2001
From: Or Gerlitz <ogerlitz@xxxxxxxxxxxx>
Date: Wed, 17 Dec 2014 16:17:34 +0200
Subject: IB/mlx4: Fix wrong usage of IPv4 protocol for multicast attach/detach
From: Or Gerlitz <ogerlitz@xxxxxxxxxxxx>
commit e9a7faf11af94957e5107b40af46c2e329541510 upstream.
The MLX4_PROT_IB_IPV4 protocol should only be used with RoCEv2 and such.
Removing this wrong usage allows to run multicast applications over RoCE.
Fixes: d487ee77740c ("IB/mlx4: Use IBoE (RoCE) IP based GIDs in the port GID table")
Reported-by: Carol Soto <clsoto@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Or Gerlitz <ogerlitz@xxxxxxxxxxxx>
Signed-off-by: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx4/main.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1222,8 +1222,7 @@ static int mlx4_ib_mcg_attach(struct ib_
struct mlx4_ib_qp *mqp = to_mqp(ibqp);
u64 reg_id;
struct mlx4_ib_steering *ib_steering = NULL;
- enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
- MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
+ enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED) {
@@ -1236,8 +1235,10 @@ static int mlx4_ib_mcg_attach(struct ib_
!!(mqp->flags &
MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
prot, ®_id);
- if (err)
+ if (err) {
+ pr_err("multicast attach op failed, err %d\n", err);
goto err_malloc;
+ }
err = add_gid_entry(ibqp, gid);
if (err)
@@ -1285,8 +1286,7 @@ static int mlx4_ib_mcg_detach(struct ib_
struct net_device *ndev;
struct mlx4_ib_gid_entry *ge;
u64 reg_id = 0;
- enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
- MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
+ enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED) {
Patches currently in stable-queue which might be from ogerlitz@xxxxxxxxxxxx are
queue-3.19/ib-core-when-marshaling-ucma-path-from-user-space-clear-unused-fields.patch
queue-3.19/ib-iser-use-correct-dma-direction-when-unmapping-sgs.patch
queue-3.19/ib-core-fix-deadlock-on-uverbs-modify_qp-error-flow.patch
queue-3.19/ib-iser-fix-memory-regions-possible-leak.patch
queue-3.19/ib-mlx4-fix-memory-leak-in-__mlx4_ib_modify_qp.patch
queue-3.19/ib-mlx4-fix-wrong-usage-of-ipv4-protocol-for-multicast-attach-detach.patch
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