1. 29 Sep, 2018 3 commits
    • Yuchung Cheng's avatar
      tcp: up initial rmem to 128KB and SYN rwin to around 64KB · a337531b
      Yuchung Cheng authored
      Previously TCP initial receive buffer is ~87KB by default and
      the initial receive window is ~29KB (20 MSS). This patch changes
      the two numbers to 128KB and ~64KB (rounding down to the multiples
      of MSS) respectively. The patch also simplifies the calculations s.t.
      the two numbers are directly controlled by sysctl tcp_rmem[1]:
      
        1) Initial receiver buffer budget (sk_rcvbuf): while this should
           be configured via sysctl tcp_rmem[1], previously tcp_fixup_rcvbuf()
           always override and set a larger size when a new connection
           establishes.
      
        2) Initial receive window in SYN: previously it is set to 20
           packets if MSS <= 1460. The number 20 was based on the initial
           congestion window of 10: the receiver needs twice amount to
           avoid being limited by the receive window upon out-of-order
           delivery in the first window burst. But since this only
           applies if the receiving MSS <= 1460, connection using large MTU
           (e.g. to utilize receiver zero-copy) may be limited by the
           receive window.
      
      With this patch TCP memory configuration is more straight-forward and
      more properly sized to modern high-speed networks by default. Several
      popular stacks have been announcing 64KB rwin in SYNs as well.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reviewed-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a337531b
    • David S. Miller's avatar
      hns3: Another build fix. · 3ff6cde8
      David S. Miller authored
      drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c: In function ‘hclge_get_sset_count’:
      drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c:496:31: error: ‘HNAE3_REVISION_ID_21’ undeclared (first use in this function); did you mean ‘FADT2_REVISION_ID’?
         if (hdev->pdev->revision >= HNAE3_REVISION_ID_21 ||
                                     ^~~~~~~~~~~~~~~~~~~~
                                     FADT2_REVISION_ID
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3ff6cde8
    • David S. Miller's avatar
      hns3: Fix the build. · d4017665
      David S. Miller authored
      drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c: In function ‘hns3_self_test’:
      drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c:278:15: error: ‘HNS3_SELF_TEST_TYPE_NUM’ undeclared (first use in this function); did you mean ‘HNS3_SELF_TEST_TPYE_NUM’?
        int st_param[HNS3_SELF_TEST_TYPE_NUM][2];
                     ^~~~~~~~~~~~~~~~~~~~~~~
                     HNS3_SELF_TEST_TPYE_NUM
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d4017665
  2. 28 Sep, 2018 32 commits
  3. 27 Sep, 2018 5 commits