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[PATCH 3.10 27/56] IB/mlx4: Forbid using sysfs to change RoCE pkeys

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject [PATCH 3.10 27/56] IB/mlx4: Forbid using sysfs to change RoCE pkeys
Date 2015-09-29 16:00 +0200
Message-ID <qe3BN-8he-21@gated-at.bofh.it> (permalink)
References <qe3s5-85D-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jack Morgenstein <jackm@dev.mellanox.co.il>

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 <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx4/sysfs.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- 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 *
 	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 *
 
 	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;


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Thread

[PATCH 3.10 00/56] 3.10.90-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 01/56] unshare: Unsharing a thread does not require unsharing a vm Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 04/56] mac80211: enable assoc check for mesh interfaces Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 02/56] rtlwifi: rtl8192cu: Add new device ID Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 17/56] NFS: nfs_set_pgio_error sometimes misses errors Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 25/56] IB/uverbs: reject invalid or unknown opcodes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 15:50 +0200
  [PATCH 3.10 40/56] net: Fix skb csum races when peeking Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 43/56] isdn/gigaset: reset tty->receive_room when attaching ser_gigaset Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 55/56] vfs: Remove incorrect debugging WARN in prepend_path Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 29/56] stmmac: fix check for phydev being open Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
    Re: [PATCH 3.10 29/56] stmmac: fix check for phydev being open Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2015-09-30 13:30 +0200
  [PATCH 3.10 49/56] ip6_gre: release cached dst on tunnel removal Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 27/56] IB/mlx4: Forbid using sysfs to change RoCE pkeys Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 31/56] sctp: fix ASCONF list handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 41/56] net: Fix skb_set_peeked use-after-free bug Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 32/56] vhost/scsi: potential memory corruption Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 30/56] hfs,hfsplus: cache pages correctly between bnode_create and bnode_free Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 35/56] net/tipc: initialize security state for new connection socket Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 52/56] net/ipv6: Correct PIM6 mrt_lock handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 50/56] usbnet: Get EVENT_NO_RUNTIME_PM bit before it is cleared Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 44/56] ipv6: lock socket in ip6_datagram_connect() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 42/56] bridge: mdb: fix double add notification Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 33/56] x86: bpf_jit: fix compilation of large bpf programs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 37/56] net: pktgen: fix race between pktgen_thread_worker() and kthread_stop() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 45/56] bonding: fix destruction of bond with devices different from arphrd_ether Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 53/56] sctp: fix race on protocol/netns initialization Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 47/56] netlink: dont hold mutex in rcu callback when releasing mmapd ring Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 36/56] bridge: mdb: zero out the local br_ip variable before use Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 48/56] rds: fix an integer overflow test in rds_info_getsockopt() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  Re: [PATCH 3.10 08/56] Input: synaptics - fix handling of disabling gesture mode Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-09-29 16:00 +0200
    Re: [PATCH 3.10 08/56] Input: synaptics - fix handling of disabling  gesture mode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:20 +0200
  [PATCH 3.10 56/56] Revert "iio: bmg160: IIO_BUFFER and IIO_TRIGGERED_BUFFER are required" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 38/56] net: call rcu_read_lock early in process_backlog Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 54/56] fib_rules: fix fib rule dumps across multiple skbs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 46/56] inet: frags: fix defragmented packets IP header for af_packet Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 34/56] ipv6: Make MLD packets to only be processed locally Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 51/56] ipv6: fix exthdrs offload registration in out_rt path Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 39/56] net: Clone skb before setting peeked flag Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:00 +0200
  [PATCH 3.10 03/56] tg3: Fix temperature reporting Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 22/56] md/raid10: always set reshape_safe when initializing reshape_position. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 18/56] parisc: Filter out spurious interrupts in PA-RISC irq handler Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 13/56] Add radeon suspend/resume quirk for HP Compaq dc5750. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 16/56] NFSv4: dont set SETATTR for O_RDONLY|O_EXCL Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 20/56] fs: if a coredump already exists, unlink and recreate with O_EXCL Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 08/56] Input: synaptics - fix handling of disabling gesture mode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 06/56] arm64: compat: fix vfp save/restore across signal handlers in big-endian Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 21/56] mmc: core: fix race condition in mmc_wait_data_done Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 24/56] hfs: fix B-tree corruption after insertion at position 0 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 19/56] vmscan: fix increasing nr_isolated incurred by putback unevictable pages Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 12/56] powerpc/rtas: Introduce rtas_get_sensor_fast() for IRQ handlers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 11/56] powerpc/mm: Fix pte_pagesize_index() crash on 4K w/64K hash Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 07/56] arm64: head.S: initialise mdcr_el2 in el2_setup Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  [PATCH 3.10 26/56] IB/uverbs: Fix race between ib_uverbs_open and remove_one Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-09-29 16:10 +0200
  Re: [PATCH 3.10 00/56] 3.10.90-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2015-09-29 19:00 +0200
  Re: [PATCH 3.10 00/56] 3.10.90-stable review Guenter Roeck <linux@roeck-us.net> - 2015-09-29 23:20 +0200
  Re: [PATCH 3.10 00/56] 3.10.90-stable review Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-09-30 07:50 +0200

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