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  1. 16 6月, 2017 3 次提交
  3. 15 6月, 2017 6 次提交
  5. 14 6月, 2017 16 次提交
  7. 13 6月, 2017 1 次提交
    • J
      i40e: fix handling of HW ATR eviction · 6964e53f
      由 Jacob Keller 提交于 
      A recent commit to refactor the driver and remove the hw_disabled_flags
field accidentally introduced two regressions. First, we overwrote
pf->flags which removed various key flags including the MSI-X settings.

Additionally, it was intended that we have now two flags,
HW_ATR_EVICT_CAPABLE and HW_ATR_EVICT_ENABLED, but this was not done,
and we accidentally were mis-using HW_ATR_EVICT_CAPABLE everywhere.

This patch adds the missing piece, HW_ATR_EVICT_ENABLED, and safely
updates pf->flags instead of overwriting it.

Without this patch we will have many problems including disabling MSI-X
support, and we'll attempt to use HW ATR eviction on devices which do
not support it.

Fixes: 47994c11 ("i40e: remove hw_disabled_flags in favor of using separate flag bits", 2017-04-19)
Signed-off-by: NJacob Keller <jacob.e.keller@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6964e53f
  9. 12 6月, 2017 10 次提交
  11. 11 6月, 2017 4 次提交
    • M
      net/mlx5: Enable 4K UAR only when page size is bigger than 4K · 91828bd8
      由 Majd Dibbiny 提交于 
      When the page size isn't bigger than 4K, there is no added value of enabling 4K
UAR feature in the Firmware.

Modified the condition of enabling the 4K UAR accordingly.

Fixes: f502d834 ("net/mlx5: Activate support for 4K UARs")
Signed-off-by: NMajd Dibbiny <majd@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
      91828bd8
    • T
      net/mlx5e: Fix wrong indications in DIM due to counter wraparound · 53acd76c
      由 Tal Gilboa 提交于 
      DIM (Dynamically-tuned Interrupt Moderation) is a mechanism designed for
changing the channel interrupt moderation values in order to reduce CPU
overhead for all traffic types.
Each iteration of the algorithm, DIM calculates the difference in
throughput, packet rate and interrupt rate from last iteration in order
to make a decision. DIM relies on counters for each metric. When these
counters get to their type's max value they wraparound. In this case
the delta between 'end' and 'start' samples is negative and when
translated to unsigned integers - very high. This results in a false
indication to the algorithm and might result in a wrong decision.

The fix calculates the 'distance' between 'end' and 'start' samples in a
cyclic way around the relevant type's max value. It can also be viewed as
an absolute value around the type's max value instead of around 0.

Testing show higher stability in DIM profile selection and no wraparound
issues.

Fixes: cb3c7fd4 ("net/mlx5e: Support adaptive RX coalescing")
Signed-off-by: NTal Gilboa <talgi@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
      53acd76c
    • T
      net/mlx5e: Added BW check for DIM decision mechanism · c3164d2f
      由 Tal Gilboa 提交于 
      DIM (Dynamically-tuned Interrupt Moderation) is a mechanism designed for
changing the channel interrupt moderation values in order to reduce CPU
overhead for all traffic types.
Until now only interrupt and packet rate were sampled.
We found a scenario on which we get a false indication since a change in
DIM caused more aggregation and reduced packet rate while increasing BW.

We now regard a change as succesfull iff:
current_BW > (prev_BW + threshold) or
current_BW ~= prev_BW and current_PR > (prev_PR + threshold) or
current_BW ~= prev_BW and current_PR ~= prev_PR and
    current_IR < (prev_IR - threshold)
Where BW = Bandwidth, PR = Packet rate and IR = Interrupt rate

Improvements (ConnectX-4Lx 25GbE, single RX queue, LRO off)
    --------------------------------------------------
    packet size | before[Mb/s] | after[Mb/s] | gain  |
    2B          | 343.4        | 359.4       |  4.5% |
    16B         | 2739.7       | 2814.8      |  2.7% |
    64B         | 9739         | 10185.3     |  4.5% |

Fixes: cb3c7fd4 ("net/mlx5e: Support adaptive RX coalescing")
Signed-off-by: NTal Gilboa <talgi@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
      c3164d2f
    • H
      net/mlx5: Remove several module events out of ethtool stats · f729860a
      由 Huy Nguyen 提交于 
      Remove the following module event counters out of ethtool stats. The
reason for removing these event counters is that these events do not
occur without techinician's intervention.
  module_pwr_budget_exd
  module_long_range
  module_no_eeprom
  module_enforce_part
  module_unknown_id
  module_unknown_status
  module_plug

Fixes: bedb7c90 ("net/mlx5e: Add port module event counters to ethtool stats")
Signed-off-by: NHuy Nguyen <huyn@mellanox.com>
Reviewed by: Gal Pressman <galp@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
      f729860a