1. 01 Aug, 2019 17 commits
  2. 31 Jul, 2019 18 commits
  3. 30 Jul, 2019 5 commits
    • David S. Miller's avatar
      Merge branch 'net-dsa-ksz-Add-Microchip-KSZ87xx-support' · 5133f36c
      David S. Miller authored
      Marek Vasut says:
      
      ====================
      net: dsa: ksz: Add Microchip KSZ87xx support
      
      This series adds support for Microchip KSZ87xx switches, which are
      slightly simpler compared to KSZ9xxx .
      ====================
      Signed-off-by: default avatarMarek Vasut <marex@denx.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5133f36c
    • Tristram Ha's avatar
      net: dsa: ksz: Add Microchip KSZ8795 DSA driver · e66f840c
      Tristram Ha authored
      Add Microchip KSZ8795 DSA driver.
      Signed-off-by: default avatarTristram Ha <Tristram.Ha@microchip.com>
      Signed-off-by: default avatarMarek Vasut <marex@denx.de>
      Cc: Andrew Lunn <andrew@lunn.ch>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Cc: Tristram Ha <Tristram.Ha@microchip.com>
      Cc: Vivien Didelot <vivien.didelot@gmail.com>
      Cc: Woojung Huh <woojung.huh@microchip.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e66f840c
    • Tristram Ha's avatar
      net: dsa: ksz: Add KSZ8795 tag code · 016e43a2
      Tristram Ha authored
      Add DSA tag code for Microchip KSZ8795 switch. The switch is simpler
      and the tag is only 1 byte, instead of 2 as is the case with KSZ9477.
      Signed-off-by: default avatarTristram Ha <Tristram.Ha@microchip.com>
      Signed-off-by: default avatarMarek Vasut <marex@denx.de>
      Cc: Andrew Lunn <andrew@lunn.ch>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Cc: Tristram Ha <Tristram.Ha@microchip.com>
      Cc: Vivien Didelot <vivien.didelot@gmail.com>
      Cc: Woojung Huh <woojung.huh@microchip.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      016e43a2
    • Marek Vasut's avatar
      dt-bindings: net: dsa: ksz: document Microchip KSZ87xx family switches · 4c173472
      Marek Vasut authored
      Document Microchip KSZ87xx family switches. These include
      KSZ8765 - 5 port switch
      KSZ8794 - 4 port switch
      KSZ8795 - 5 port switch
      Signed-off-by: default avatarMarek Vasut <marex@denx.de>
      Cc: Andrew Lunn <andrew@lunn.ch>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Cc: Rob Herring <robh+dt@kernel.org>
      Cc: Tristram Ha <Tristram.Ha@microchip.com>
      Cc: Vivien Didelot <vivien.didelot@gmail.com>
      Cc: Woojung Huh <woojung.huh@microchip.com>
      Cc: devicetree@vger.kernel.org
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4c173472
    • David S. Miller's avatar
      Merge branch 'vsock-virtio-optimizations-to-increase-the-throughput' · c69e6eaf
      David S. Miller authored
      Stefano Garzarella says:
      
      ====================
      vsock/virtio: optimizations to increase the throughput
      
      This series tries to increase the throughput of virtio-vsock with slight
      changes.
      While I was testing the v2 of this series I discovered an huge use of memory,
      so I added patch 1 to mitigate this issue. I put it in this series in order
      to better track the performance trends.
      
      v5:
      - rebased all patches on net-next
      - added Stefan's R-b and Michael's A-b
      
      v4: https://patchwork.kernel.org/cover/11047717
      v3: https://patchwork.kernel.org/cover/10970145
      v2: https://patchwork.kernel.org/cover/10938743
      v1: https://patchwork.kernel.org/cover/10885431
      
      Below are the benchmarks step by step. I used iperf3 [1] modified with VSOCK
      support. As Michael suggested in the v1, I booted host and guest with 'nosmap'.
      
      A brief description of patches:
      - Patches 1:   limit the memory usage with an extra copy for small packets
      - Patches 2+3: reduce the number of credit update messages sent to the
                     transmitter
      - Patches 4+5: allow the host to split packets on multiple buffers and use
                     VIRTIO_VSOCK_MAX_PKT_BUF_SIZE as the max packet size allowed
      
                          host -> guest [Gbps]
      pkt_size before opt   p 1     p 2+3    p 4+5
      
      32         0.032     0.030    0.048    0.051
      64         0.061     0.059    0.108    0.117
      128        0.122     0.112    0.227    0.234
      256        0.244     0.241    0.418    0.415
      512        0.459     0.466    0.847    0.865
      1K         0.927     0.919    1.657    1.641
      2K         1.884     1.813    3.262    3.269
      4K         3.378     3.326    6.044    6.195
      8K         5.637     5.676   10.141   11.287
      16K        8.250     8.402   15.976   16.736
      32K       13.327    13.204   19.013   20.515
      64K       21.241    21.341   20.973   21.879
      128K      21.851    22.354   21.816   23.203
      256K      21.408    21.693   21.846   24.088
      512K      21.600    21.899   21.921   24.106
      
                          guest -> host [Gbps]
      pkt_size before opt   p 1     p 2+3    p 4+5
      
      32         0.045     0.046    0.057    0.057
      64         0.089     0.091    0.103    0.104
      128        0.170     0.179    0.192    0.200
      256        0.364     0.351    0.361    0.379
      512        0.709     0.699    0.731    0.790
      1K         1.399     1.407    1.395    1.427
      2K         2.670     2.684    2.745    2.835
      4K         5.171     5.199    5.305    5.451
      8K         8.442     8.500   10.083    9.941
      16K       12.305    12.259   13.519   15.385
      32K       11.418    11.150   11.988   24.680
      64K       10.778    10.659   11.589   35.273
      128K      10.421    10.339   10.939   40.338
      256K      10.300     9.719   10.508   36.562
      512K       9.833     9.808   10.612   35.979
      
      As Stefan suggested in the v1, I measured also the efficiency in this way:
          efficiency = Mbps / (%CPU_Host + %CPU_Guest)
      
      The '%CPU_Guest' is taken inside the VM. I know that it is not the best way,
      but it's provided for free from iperf3 and could be an indication.
      
              host -> guest efficiency [Mbps / (%CPU_Host + %CPU_Guest)]
      pkt_size before opt   p 1     p 2+3    p 4+5
      
      32         0.35      0.45     0.79     1.02
      64         0.56      0.80     1.41     1.54
      128        1.11      1.52     3.03     3.12
      256        2.20      2.16     5.44     5.58
      512        4.17      4.18    10.96    11.46
      1K         8.30      8.26    20.99    20.89
      2K        16.82     16.31    39.76    39.73
      4K        30.89     30.79    74.07    75.73
      8K        53.74     54.49   124.24   148.91
      16K       80.68     83.63   200.21   232.79
      32K      132.27    132.52   260.81   357.07
      64K      229.82    230.40   300.19   444.18
      128K     332.60    329.78   331.51   492.28
      256K     331.06    337.22   339.59   511.59
      512K     335.58    328.50   331.56   504.56
      
              guest -> host efficiency [Mbps / (%CPU_Host + %CPU_Guest)]
      pkt_size before opt   p 1     p 2+3    p 4+5
      
      32         0.43      0.43     0.53     0.56
      64         0.85      0.86     1.04     1.10
      128        1.63      1.71     2.07     2.13
      256        3.48      3.35     4.02     4.22
      512        6.80      6.67     7.97     8.63
      1K        13.32     13.31    15.72    15.94
      2K        25.79     25.92    30.84    30.98
      4K        50.37     50.48    58.79    59.69
      8K        95.90     96.15   107.04   110.33
      16K      145.80    145.43   143.97   174.70
      32K      147.06    144.74   146.02   282.48
      64K      145.25    143.99   141.62   406.40
      128K     149.34    146.96   147.49   489.34
      256K     156.35    149.81   152.21   536.37
      512K     151.65    150.74   151.52   519.93
      
      [1] https://github.com/stefano-garzarella/iperf/
      ====================
      Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c69e6eaf