hw/mlx4/kernel_patches/core_0030_lso.patch

   1 From 86a166b61efd6c040bd6d508a4179e3e15827ac0 Mon Sep 17 00:00:00 2001
   2 From: Eli Cohen <eli@mellanox.co.il>
   3 Date: Tue, 15 Jan 2008 15:48:20 +0200
   4 Subject: [PATCH] Add core support for LSO
   5
   6 LSO allows to pass to the network driver SKBs with data larger
   7 than MTU and let the HW fragment the packet to mss quantities.
   8
   9 Signed-off-by: Eli Cohen <eli@mellanox.co.il>
  10 ---
  11  include/rdma/ib_verbs.h |   11 +++++++++--
  12  1 files changed, 9 insertions(+), 2 deletions(-)
  13
  14 diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
  15 index a4f6184..6ef1729 100644
  16 --- a/include/rdma/ib_verbs.h
  17 +++ b/include/rdma/ib_verbs.h
  18 @@ -103,6 +103,7 @@ enum ib_device_cap_flags {
  19          * may set NETIF_F_IP_CSUM.
  20          */
  21         IB_DEVICE_IP_CSUM               = (1<<18),
  22 +       IB_DEVICE_TCP_TSO               = (1<<19),
  23  };
  24
  25  enum ib_atomic_cap {
  26 @@ -410,6 +411,7 @@ enum ib_wc_opcode {
  27         IB_WC_COMP_SWAP,
  28         IB_WC_FETCH_ADD,
  29         IB_WC_BIND_MW,
  30 +       IB_WC_LSO,
  31  /*
  32   * Set value of IB_WC_RECV so consumers can test if a completion is a
  33   * receive by testing (opcode & IB_WC_RECV).
  34 @@ -621,7 +623,8 @@ enum ib_wr_opcode {
  35         IB_WR_SEND_WITH_IMM,
  36         IB_WR_RDMA_READ,
  37         IB_WR_ATOMIC_CMP_AND_SWP,
  38 -       IB_WR_ATOMIC_FETCH_AND_ADD
  39 +       IB_WR_ATOMIC_FETCH_AND_ADD,
  40 +       IB_WR_LSO
  41  };
  42
  43  enum ib_send_flags {
  44 @@ -629,7 +632,8 @@ enum ib_send_flags {
  45         IB_SEND_SIGNALED        = (1<<1),
  46         IB_SEND_SOLICITED       = (1<<2),
  47         IB_SEND_INLINE          = (1<<3),
  48 -       IB_SEND_IP_CSUM         = (1<<4)
  49 +       IB_SEND_IP_CSUM         = (1<<4),
  50 +       IB_SEND_UDP_LSO         = (1<<5)
  51  };
  52
  53  struct ib_sge {
  54 @@ -659,6 +663,9 @@ struct ib_send_wr {
  55                 } atomic;
  56                 struct {
  57                         struct ib_ah *ah;
  58 +                       void   *header;
  59 +                       int     hlen;
  60 +                       int     mss;
  61                         u32     remote_qpn;
  62                         u32     remote_qkey;
  63                         u16     pkey_index; /* valid for GSI only */
  64 --
  65 1.5.3.8
  66