linux-stable.git/drivers/net/ethernet, branch v4.2.3

net/mlx4_core: Capping number of requested MSIXs to MAX_MSIX

2015-10-03T11:51:39+00:00

[ Upstream commit 9293267a3e2a7a2555d8ddc8f9301525e5b03b1b ]

We currently manage IRQs in pool_bm which is a bit field
of MAX_MSIX bits. Thus, allocating more than MAX_MSIX
interrupts can't be managed in pool_bm.
Fixing this by capping number of requested MSIXs to
MAX_MSIX.

Signed-off-by: Matan Barak 
Signed-off-by: Carol L Soto 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

mvneta: use inband status only when explicitly enabled

2015-10-03T11:51:39+00:00

[ Upstream commit f8af8e6eb95093d5ce5ebcc52bd1929b0433e172 in net-next tree,
  will be pushed to Linus very soon. ]

The commit 898b2970e2c9 ("mvneta: implement SGMII-based in-band link state
signaling") implemented the link parameters auto-negotiation unconditionally.
Unfortunately it appears that some HW that implements SGMII protocol,
doesn't generate the inband status, so it is not possible to auto-negotiate
anything with such HW.

This patch enables the auto-negotiation only if explicitly requested with
the 'managed' DT property.

This patch fixes the following regression:
https://lkml.org/lkml/2015/7/8/865

Signed-off-by: Stas Sergeev 

CC: Thomas Petazzoni 
CC: netdev@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net/mlx4_en: really allow to change RSS key

2015-10-03T11:51:37+00:00

[ Upsteam commit 4671fc6d47e0a0108fe24a4d830347d6a6ef4aa7 ]

When changing rss key, we do not want to overwrite user provided key
by the one provided by netdev_rss_key_fill(), which is the host random
key generated at boot time.

Fixes: 947cbb0ac242 ("net/mlx4_en: Support for configurable RSS hash function")
Signed-off-by: Eric Dumazet 
Cc: Eyal Perry 
CC: Amir Vadai 
Acked-by: Or Gerlitz 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: mvneta: fix DMA buffer unmapping in mvneta_rx()

2015-10-03T11:51:37+00:00

[ Upstream commit daf158d0d544cec80b7b30deff8cfc59a6e17610 ]

This patch fixes a regression introduced by the commit a84e32894191
("net: mvneta: fix refilling for Rx DMA buffers"). Due to this commit
the newly allocated Rx buffers are DMA-unmapped in place of those passed
to the networking stack. Obviously, this causes data corruptions.

This patch fixes the issue by ensuring that the right Rx buffers are
DMA-unmapped.

Reported-by: Oren Laskin 
Signed-off-by: Simon Guinot 
Fixes: a84e32894191 ("net: mvneta: fix refilling for Rx DMA buffers")
Cc:  # v3.8+
Tested-by: Oren Laskin 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: eth: altera: fix napi poll_list corruption

2015-10-03T11:51:35+00:00

[ Upstream commit 4548a697e4969d695047cebd6d9af5e2f6cc728e ]

tse_poll() calls __napi_complete() with irq enabled.  This leads napi
poll_list corruption and may stop all napi drivers working.
Use napi_complete() instead of __napi_complete().

Signed-off-by: Atsushi Nemoto 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: fec: clear receive interrupts before processing a packet

2015-10-03T11:51:35+00:00

[ Upstream commit ed63f1dcd5788d36f942fbcce350742385e3e18c ]

The patch just to re-submit the patch "db3421c114cfa6326" because the
patch "4d494cdc92b3b9a0" remove the change.

Clear any pending receive interrupt before we process a pending packet.
This helps to avoid any spurious interrupts being raised after we have
fully cleaned the receive ring, while still allowing an interrupt to be
raised if we receive another packet.

The position of this is critical: we must do this prior to reading the
next packet status to avoid potentially dropping an interrupt when a
packet is still pending.

Acked-by: Fugang Duan 
Signed-off-by: Russell King 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

stmmac: fix check for phydev being open

2015-09-29T17:33:36+00:00

commit dfc50fcaad574e5c8c85cbc83eca1426b2413fa4 upstream.

Current check of phydev with IS_ERR(phydev) may make not much sense
because of_phy_connect() returns NULL on failure instead of error value.

Still for checking result of phy_connect() IS_ERR() makes perfect sense.

So let's use combined check IS_ERR_OR_NULL() that covers both cases.

Cc: Sergei Shtylyov 
Cc: Giuseppe Cavallaro 
Cc: linux-kernel@vger.kernel.org
Cc: David Miller 
Signed-off-by: Alexey Brodkin 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

tg3: Fix temperature reporting

2015-09-29T17:33:17+00:00

commit d3d11fe08ccc9bff174fc958722b5661f0932486 upstream.

The temperature registers appear to report values in degrees Celsius
while the hwmon API mandates values to be exposed in millidegrees
Celsius. Do the conversion so that the values reported by "sensors"
are correct.

Fixes: aed93e0bf493 ("tg3: Add hwmon support for temperature")
Signed-off-by: Jean Delvare 
Cc: Prashant Sreedharan 
Cc: Michael Chan 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

igb: Fix oops caused by missing queue pairing

2015-09-29T17:33:17+00:00

commit 72ddef0506da852dc82f078f37ced8ef4d74a2bf upstream.

When initializing igb driver (e.g. 82576, I350), IGB_FLAG_QUEUE_PAIRS is
set if adapter->rss_queues exceeds half of max_rss_queues in
igb_init_queue_configuration().
On the other hand, IGB_FLAG_QUEUE_PAIRS is not set even if the number of
queues exceeds half of max_combined in igb_set_channels() when changing
the number of queues by "ethtool -L".
In this case, if numvecs is larger than MAX_MSIX_ENTRIES (10), the size
of adapter->msix_entries[], an overflow can occur in
igb_set_interrupt_capability(), which in turn leads to an oops.

Fix this problem as follows:
 - When changing the number of queues by "ethtool -L", set
   IGB_FLAG_QUEUE_PAIRS in the same way as initializing igb driver.
 - When increasing the size of q_vector, reallocate it appropriately.
   (With IGB_FLAG_QUEUE_PAIRS set, the size of q_vector gets larger.)

Another possible way to fix this problem is to cap the queues at its
initial number, which is the number of the initial online cpus. But this
is not the optimal way because we cannot increase queues when another
cpu becomes online.

Note that before commit cd14ef54d25b ("igb: Change to use statically
allocated array for MSIx entries"), this problem did not cause oops
but just made the number of queues become 1 because of entering msi_only
mode in igb_set_interrupt_capability().

Fixes: 907b7835799f ("igb: Add ethtool support to configure number of channels")
Signed-off-by: Shota Suzuki 
Tested-by: Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-08-28T00:52:38+00:00

Pull networking fixes from David Miller:
 "Some straggler bug fixes here:

   1) Netlink_sendmsg() doesn't check iterator type properly in mmap
      case, from Ken-ichirou MATSUZAWA.

   2) Don't sleep in atomic context in bcmgenet driver, from Florian
      Fainelli.

   3) The pfkey_broadcast() code patch can't actually ever use anything
      other than GFP_ATOMIC.  And the cases that right now pass
      GFP_KERNEL or similar will currently trigger an RCU splat.  Just
      use GFP_ATOMIC unconditionally.  From David Ahern.

   4) Fix FD bit timings handling in pcan_usb driver, from Marc
      Kleine-Budde.

   5) Cache dst leaked in ip6_gre tunnel removal, fix from Huaibin Wang.

   6) Traversal into drivers/net/ethernet/renesas should be triggered by
      CONFIG_NET_VENDOR_RENESAS, not a particular driver's config
      option.  From Kazuya Mizuguchi.

   7) Fix regression in handling of igmp_join errors in vxlan, from
      Marcelo Ricardo Leitner.

   8) Make phy_{read,write}_mmd_indirect() properly take the mdio_lock
      mutex when programming the registers.  From Russell King.

   9) Fix non-forced handling in u32_destroy(), from WANG Cong.

  10) Test the EVENT_NO_RUNTIME_PM flag before it is cleared in
      usbnet_stop(), from Eugene Shatokhin.

  11) In sfc driver, don't fetch statistics firmware isn't capable of,
      from Bert Kenward.

  12) Verify ASCONF address parameter location in SCTP, from Xin Long"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
  sctp: asconf's process should verify address parameter is in the beginning
  sfc: only use vadaptor stats if firmware is capable
  net: phy: fixed: propagate fixed link values to struct
  usbnet: Get EVENT_NO_RUNTIME_PM bit before it is cleared
  drivers: net: xgene: fix: Oops in linkwatch_fire_event
  cls_u32: complete the check for non-forced case in u32_destroy()
  net: fec: use reinit_completion() in mdio accessor functions
  net: phy: add locking to phy_read_mmd_indirect()/phy_write_mmd_indirect()
  vxlan: re-ignore EADDRINUSE from igmp_join
  net: compile renesas directory if NET_VENDOR_RENESAS is configured
  ip6_gre: release cached dst on tunnel removal
  phylib: Make PHYs children of their MDIO bus, not the bus' parent.
  can: pcan_usb: don't provide CAN FD bittimings by non-FD adapters
  net: Fix RCU splat in af_key
  net: bcmgenet: fix uncleaned dma flags
  net: bcmgenet: Avoid sleeping in bcmgenet_timeout
  netlink: mmap: fix tx type check