Roland,
would like me to re-generate the mlx4 LSO patch to match this commit or
would you do the adjustments?
On Fri, 2008-03-28 at 14:39 -0700, Roland Dreier wrote:
> thanks, applied as below.
>
> For now I left the IB_WR_LSO opcode rather than a send flag, since the
> mlx4 internal implementation is as a new opcode. However since this
> is kernel-internal we can revisit this and I'm happy if the discussion
> continues.
>
> From 86a0dd93c39739a39d6b5f7f67d4b2456c5f45ae Mon Sep 17 00:00:00 2001
> From: Eli Cohen <[EMAIL PROTECTED]>
> Date: Mon, 17 Mar 2008 17:23:51 +0200
> Subject: [PATCH] IB/core: Add IPoIB UD LSO support
>
> LSO (large send offload) allows the networking stack to pass SKBs with
> data size larger than the MTU to the IPoIB driver and have the HCA HW
> fragment the data to multiple MSS-sized packets. Add a device
> capability flag IB_DEVICE_UD_TSO for devices that can perform TCP
> segmentation offload, a new send work request opcode IB_WR_LSO,
> header, hlen and mss fields for the work request structure, and a new
> IB_WC_LSO completion type.
>
> Signed-off-by: Eli Cohen <[EMAIL PROTECTED]>
> Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
> ---
> include/rdma/ib_verbs.h | 8 +++++++-
> 1 files changed, 7 insertions(+), 1 deletions(-)
>
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 3ac7371..5fe7723 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -104,6 +104,7 @@ enum ib_device_cap_flags {
> * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
> */
> IB_DEVICE_UD_IP_CSUM = (1<<18),
> + IB_DEVICE_UD_TSO = (1<<19),
> IB_DEVICE_SEND_W_INV = (1<<21),
> };
>
> @@ -412,6 +413,7 @@ enum ib_wc_opcode {
> IB_WC_COMP_SWAP,
> IB_WC_FETCH_ADD,
> IB_WC_BIND_MW,
> + IB_WC_LSO,
> /*
> * Set value of IB_WC_RECV so consumers can test if a completion is a
> * receive by testing (opcode & IB_WC_RECV).
> @@ -623,7 +625,8 @@ enum ib_wr_opcode {
> IB_WR_SEND_WITH_IMM,
> IB_WR_RDMA_READ,
> IB_WR_ATOMIC_CMP_AND_SWP,
> - IB_WR_ATOMIC_FETCH_AND_ADD
> + IB_WR_ATOMIC_FETCH_AND_ADD,
> + IB_WR_LSO
> };
>
> enum ib_send_flags {
> @@ -662,6 +665,9 @@ struct ib_send_wr {
> } atomic;
> struct {
> struct ib_ah *ah;
> + void *header;
> + int hlen;
> + int mss;
> u32 remote_qpn;
> u32 remote_qkey;
> u16 pkey_index; /* valid for GSI only */
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