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  1. 10 3月, 2017 9 次提交
    • M
      bnxt_en: Check if firmware LLDP agent is running. · bc39f885
      由 Michael Chan 提交于 
      Set DCB_CAP_DCBX_HOST capability flag only if the firmware LLDP agent
is not running.
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      bc39f885
    • M
      bnxt_en: Call bnxt_ulp_stop() during tx timeout. · b386cd36
      由 Michael Chan 提交于 
      If we call bnxt_reset_task() due to tx timeout, we should call
bnxt_ulp_stop() to inform the RDMA driver about the error and the
impending reset.
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b386cd36
    • M
      bnxt_en: Perform function reset earlier during probe. · 3c2217a6
      由 Michael Chan 提交于 
      The firmware call to do function reset is done too late.  It is causing
the rings that have been reserved to be freed.  In NPAR mode, this bug
is causing us to run out of rings.

Fixes: 391be5c2 ("bnxt_en: Implement new scheme to reserve tx rings.")
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3c2217a6
    • R
      qed: Fix copy of uninitialized memory · 8aad6f14
      由 robert.foss@collabora.com 提交于 
      In qed_ll2_start_ooo() the ll2_info variable is uninitialized and then
passed to qed_ll2_acquire_connection() where it is copied into a new
memory space.

This shouldn't cause any issue as long as non of the copied memory is
every read.
But the potential for a bug being introduced by reading this memory
is real.

Detected by CoverityScan, CID#1399632 ("Uninitialized scalar variable")
Signed-off-by: NRobert Foss <robert.foss@collabora.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8aad6f14
    • T
      net: thunderx: Allow IPv6 frames with zero UDP checksum · 36fa35d2
      由 Thanneeru Srinivasulu 提交于 
      Do not consider IPv6 frames with zero UDP checksum as frames
with bad checksum and drop them.
Signed-off-by: NThanneeru Srinivasulu <tsrinivasulu@cavium.com>
Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      36fa35d2
    • S
      net: thunderx: Fix invalid mac addresses for node1 interfaces · 78aacb6f
      由 Sunil Goutham 提交于 
      When booted with ACPI, random mac addresses are being
assigned to node1 interfaces due to mismatch of bgx_id
in BGX driver and ACPI tables.

This patch fixes this issue by setting maximum BGX devices
per node based on platform/soc instead of a macro. This
change will set the bgx_id appropriately.
Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      78aacb6f
    • S
      net: thunderx: Fix LMAC mode debug prints for QSGMII mode · 18de7ba9
      由 Sunil Goutham 提交于 
      When BGX/LMACs are in QSGMII mode, for some LMACs, mode info is
not being printed. This patch will fix that. With changes already
done to not do any sort of serdes 2 lane mapping config calculation
in kernel driver, we can get rid of this logic.
Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      18de7ba9
    • S
      net: thunderx: Fix IOMMU translation faults · 83abb7d7
      由 Sunil Goutham 提交于 
      ACPI support has been added to ARM IOMMU driver in 4.10 kernel
and that has resulted in VNIC interfaces throwing translation
faults when kernel is booted with ACPI as driver was not using
DMA API. This patch fixes the issue by using DMA API which inturn
will create translation tables when IOMMU is enabled.

Also VNIC doesn't have a seperate receive buffer ring per receive
queue, so there is no 1:1 descriptor index matching between CQE_RX
and the index in buffer ring from where a buffer has been used for
DMA'ing. Unlike other NICs, here it's not possible to maintain dma
address to virt address mappings within the driver. This leaves us
no other choice but to use IOMMU's IOVA address conversion API to
get buffer's virtual address which can be given to network stack
for processing.
Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      83abb7d7
    • V
      liquidio: improve UDP TX performance · 67e303e0
      由 VSR Burru 提交于 
      Improve UDP TX performance by:
* reducing the ring size from 2K to 512
* replacing the numerous streaming DMA allocations for info buffers and
  gather lists with one large consistent DMA allocation per ring

BQL is not effective here.  We reduced the ring size because there is heavy
overhead with dma_map_single every so often.  With iommu=on, dma_map_single
in PF Tx data path was taking longer time (~700usec) for every ~250
packets.  Debugged intel_iommu code, and found that PF driver is utilizing
too many static IO virtual address mapping entries (for gather list entries
and info buffers): about 100K entries for two PF's each using 8 rings.
Also, finding an empty entry (in rbtree of device domain's iova mapping in
kernel) during Tx path becomes a bottleneck every so often; the loop to
find the empty entry goes through over 40K iterations; this is too costly
and was the major overhead.  Overhead is low when this loop quits quickly.

Netperf benchmark numbers before and after patch:

PF UDP TX
+--------+--------+------------+------------+---------+
|        |        |  Before    |  After     |         |
| Number |        |  Patch     |  Patch     |         |
|  of    | Packet | Throughput | Throughput | Percent |
| Flows  |  Size  |  (Gbps)    |  (Gbps)    | Change  |
+--------+--------+------------+------------+---------+
|        |   360  |   0.52     |   0.93     |  +78.9  |
|   1    |  1024  |   1.62     |   2.84     |  +75.3  |
|        |  1518  |   2.44     |   4.21     |  +72.5  |
+--------+--------+------------+------------+---------+
|        |   360  |   0.45     |   1.59     | +253.3  |
|   4    |  1024  |   1.34     |   5.48     | +308.9  |
|        |  1518  |   2.27     |   8.31     | +266.1  |
+--------+--------+------------+------------+---------+
|        |   360  |   0.40     |   1.61     | +302.5  |
|   8    |  1024  |   1.64     |   4.24     | +158.5  |
|        |  1518  |   2.87     |   6.52     | +127.2  |
+--------+--------+------------+------------+---------+

VF UDP TX
+--------+--------+------------+------------+---------+
|        |        |  Before    |  After     |         |
| Number |        |  Patch     |  Patch     |         |
|  of    | Packet | Throughput | Throughput | Percent |
| Flows  |  Size  |  (Gbps)    |  (Gbps)    | Change  |
+--------+--------+------------+------------+---------+
|        |   360  |   1.28     |   1.49     |  +16.4  |
|   1    |  1024  |   4.44     |   4.39     |   -1.1  |
|        |  1518  |   6.08     |   6.51     |   +7.1  |
+--------+--------+------------+------------+---------+
|        |   360  |   2.35     |   2.35     |    0.0  |
|   4    |  1024  |   6.41     |   8.07     |  +25.9  |
|        |  1518  |   9.56     |   9.54     |   -0.2  |
+--------+--------+------------+------------+---------+
|        |   360  |   3.41     |   3.65     |   +7.0  |
|   8    |  1024  |   9.35     |   9.34     |   -0.1  |
|        |  1518  |   9.56     |   9.57     |   +0.1  |
+--------+--------+------------+------------+---------+
Signed-off-by: NVSR Burru <veerasenareddy.burru@cavium.com>
Signed-off-by: NFelix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: NDerek Chickles <derek.chickles@cavium.com>
Signed-off-by: NRaghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      67e303e0
  3. 09 3月, 2017 11 次提交
  5. 08 3月, 2017 10 次提交
  7. 04 3月, 2017 6 次提交
  9. 03 3月, 2017 4 次提交