From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from youngberry.canonical.com ([91.189.89.112]:43235 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753420AbbJTVgn (ORCPT ); Tue, 20 Oct 2015 17:36:43 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Jack Morgenstein , Or Gerlitz , Doug Ledford , Kamal Mostafa Subject: [PATCH 3.13.y-ckt 79/85] IB/mlx4: Forbid using sysfs to change RoCE pkeys Date: Tue, 20 Oct 2015 14:35:35 -0700 Message-Id: <1445376941-7046-80-git-send-email-kamal@canonical.com> In-Reply-To: <1445376941-7046-1-git-send-email-kamal@canonical.com> References: <1445376941-7046-1-git-send-email-kamal@canonical.com> Sender: stable-owner@vger.kernel.org List-ID: 3.13.11-ckt28 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Jack Morgenstein commit 2b135db3e81301d0452e6aa107349abe67b097d6 upstream. The pkey mapping for RoCE must remain the default mapping: VFs: virtual index 0 = mapped to real index 0 (0xFFFF) All others indices: mapped to a real pkey index containing an invalid pkey. PF: virtual index i = real index i. Don't allow users to change these mappings using files found in sysfs. Fixes: c1e7e466120b ('IB/mlx4: Add iov directory in sysfs under the ib device') Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: Doug Ledford Signed-off-by: Kamal Mostafa --- drivers/infiniband/hw/mlx4/sysfs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx4/sysfs.c b/drivers/infiniband/hw/mlx4/sysfs.c index 97516eb..c5ce408 100644 --- a/drivers/infiniband/hw/mlx4/sysfs.c +++ b/drivers/infiniband/hw/mlx4/sysfs.c @@ -563,6 +563,8 @@ static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave) struct mlx4_port *p; int i; int ret; + int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) == + IB_LINK_LAYER_ETHERNET; p = kzalloc(sizeof *p, GFP_KERNEL); if (!p) @@ -580,7 +582,8 @@ static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave) p->pkey_group.name = "pkey_idx"; p->pkey_group.attrs = - alloc_group_attrs(show_port_pkey, store_port_pkey, + alloc_group_attrs(show_port_pkey, + is_eth ? NULL : store_port_pkey, dev->dev->caps.pkey_table_len[port_num]); if (!p->pkey_group.attrs) goto err_alloc; -- 1.9.1