linux.git/drivers/net, branch v4.8-rc5

Add Killer E2500 device ID in alx driver.

2016-08-29T04:23:50+00:00

Signed-off-by: David S. Miller

net: smc91x: fix SMC accesses

2016-08-29T03:44:55+00:00

Commit b70661c70830 ("net: smc91x: use run-time configuration on all ARM
machines") broke some ARM platforms through several mistakes.  Firstly,
the access size must correspond to the following rule:

(a) at least one of 16-bit or 8-bit access size must be supported
(b) 32-bit accesses are optional, and may be enabled in addition to
    the above.

Secondly, it provides no emulation of 16-bit accesses, instead blindly
making 16-bit accesses even when the platform specifies that only 8-bit
is supported.

Reorganise smc91x.h so we can make use of the existing 16-bit access
emulation already provided - if 16-bit accesses are supported, use
16-bit accesses directly, otherwise if 8-bit accesses are supported,
use the provided 16-bit access emulation.  If neither, BUG().  This
exactly reflects the driver behaviour prior to the commit being fixed.

Since the conversion incorrectly cut down the available access sizes on
several platforms, we also need to go through every platform and fix up
the overly-restrictive access size: Arnd assumed that if a platform can
perform 32-bit, 16-bit and 8-bit accesses, then only a 32-bit access
size needed to be specified - not so, all available access sizes must
be specified.

This likely fixes some performance regressions in doing this: if a
platform does not support 8-bit accesses, 8-bit accesses have been
emulated by performing a 16-bit read-modify-write access.

Tested on the Intel Assabet/Neponset platform, which supports only 8-bit
accesses, which was broken by the original commit.

Fixes: b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines")
Signed-off-by: Russell King 
Tested-by: Robert Jarzmik 
Signed-off-by: David S. Miller

net/mlx5: Increase number of ethtool steering priorities

2016-08-29T03:24:16+00:00

Ethtool has 11 flow tables, each flow table has its own priority.
Increase the number of priorities to be aligned with the number of flow
tables.

Fixes: 1174fce8d141 ('net/mlx5e: Support l3/l4 flow type specs in ethtool flow steering')
Signed-off-by: Maor Gottlieb 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5: Add error prints when validate ETS failed

2016-08-29T03:24:16+00:00

Upon set ETS failure due to user invalid input, add error prints to
specify the exact error to the user.

Fixes: cdcf11212b22 ('net/mlx5e: Validate BW weight values of ETS')
Signed-off-by: Eran Ben Elisha 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Fix memory leak if refreshing TIRs fails

2016-08-29T03:24:15+00:00

Free 'in' command object also when mlx5_core_modify_tir fails.

Fixes: 724b2aa15126 ("net/mlx5e: TIRs management refactoring")
Signed-off-by: Kamal Heib 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Add ethtool counter for TX xmit_more

2016-08-29T03:24:15+00:00

Add a counter in ethtool for the number of times that
TX xmit_more was used.

Signed-off-by: Tariq Toukan 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Fix ethtool -g/G rx ring parameter report with striding RQ

2016-08-29T03:24:15+00:00

The driver RQ has two possible configurations: striding RQ and
non-striding RQ.  Until this patch, the driver always reported the
number of hardware WQEs (ring descriptors). For non striding RQ
configuration, this was OK since we have one WQE per pending packet
For striding RQ, multiple packets can fit into one WQE. For better
user experience we normalize the rx_pending parameter (size of wqe/mtu)
as the average ring size in case of striding RQ.

Fixes: 461017cb006a ('net/mlx5e: Support RX multi-packet WQE ...')
Signed-off-by: Eran Ben Elisha 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Don't wait for SQ completions on close

2016-08-29T03:24:15+00:00

Instead of asking the firmware to flush the SQ (Send Queue) via
asynchronous completions when moved to error, we handle SQ flush
manually (mlx5e_free_tx_descs) same as we did when SQ flush got
timed out or on tx_timeout.

This will reduce SQs flush time and speedup interface down procedure.

Moved mlx5e_free_tx_descs to the end of en_tx.c for tx
critical code locality.

Fixes: 29429f3300a3 ('net/mlx5e: Timeout if SQ doesn't flush during close')
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Don't post fragmented MPWQE when RQ is disabled

2016-08-29T03:24:15+00:00

ICO (Internal control operations) SQ (Send Queue) is closed/disabled
after RQ (Receive Queue).  After RQ is closed an ICO SQ completion
might post a fragmented MPWQE (Multi Packet Work Queue Element) into
that RQ.

As on regular RQ post, check if we are allowed to post to that
RQ (RQ is enabled). Cleanup in-progress UMR MPWQE on mlx5e_free_rx_descs
if needed.

Fixes: bc77b240b3c5 ('net/mlx5e: Add fragmented memory support for RX multi packet WQE')
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

net/mlx5e: Don't wait for RQ completions on close

2016-08-29T03:24:15+00:00

This will significantly reduce receive queue flush time on interface
down.

Instead of asking the firmware to flush the RQ (Receive Queue) via
asynchronous completions when moved to error, we handle RQ flush
manually (mlx5e_free_rx_descs) same as we did when RQ flush got timed
out.

This will reduce RQs flush time and speedup interface down procedure
(ifconfig down) from 6 sec to 0.3 sec on a 48 cores system.

Moved mlx5e_free_rx_descs en_main.c where it is needed, to keep en_rx.c
free form non critical data path code for better code locality.

Fixes: 6cd392a082de ('net/mlx5e: Handle RQ flush in error cases')
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller