[ofa-general] [PATCH RFC] RDMA/cxgb3: Fixes for zero-stag.

[Steve Wise]

Roland Dreier wrote:
> I don't know if we want a new API or just a new field in struct
> ib_device.  We already have the ZERO_STAG capability flag to show when
> this makes sense (and we could rename it to be more transport neutral),
> and we could just add a local_lkey field, since the value is fixed at
> device initialization time.
>
>  - R.
>   


like this?

> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 74c24b9..2155a33 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -91,7 +91,7 @@ enum ib_device_cap_flags {
>         IB_DEVICE_RC_RNR_NAK_GEN        = (1<<12),
>         IB_DEVICE_SRQ_RESIZE            = (1<<13),
>         IB_DEVICE_N_NOTIFY_CQ           = (1<<14),
> -       IB_DEVICE_ZERO_STAG             = (1<<15),
> +       IB_DEVICE_LOCAL_DMA_LKEY        = (1<<15),
>         IB_DEVICE_RESERVED              = (1<<16), /* old SEND_W_INV */
>         IB_DEVICE_MEM_WINDOW            = (1<<17),
>         /*
> @@ -1096,6 +1096,7 @@ struct ib_device {
>         __be64                       node_guid;
>         u8                           node_type;
>         u8                           phys_port_cnt;
> +       u32                          local_dma_lkey;
>  };
>  
>  struct ib_client {