[ofa-general] [PATCH 1/5] [uDAPL v2] dapl scm: update max_rdma_read_iov, max_rdma_write_iov EP attributes during query

[Steve Wise]

Arlin Davis wrote:
> >From 7e25c0f21d755cce3aa7aff993fb0baddaafc0e8 Mon Sep 17 00:00:00 2001
> From: Arlin Davis <arlin.r.davis at intel.com>
> Patch set for uDAPL v2 socket cm provider improvements.
>
> Signed-off by: Arlin Davis ardavis at ichips.intel.com
> ---
>  dapl/openib_scm/dapl_ib_util.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/dapl/openib_scm/dapl_ib_util.c b/dapl/openib_scm/dapl_ib_util.c
> index 43f85ac..f3874ca 100644
> --- a/dapl/openib_scm/dapl_ib_util.c
> +++ b/dapl/openib_scm/dapl_ib_util.c
> @@ -478,6 +478,8 @@ DAT_RETURN dapls_ib_query_hca (
>  		ep_attr->max_request_iov  = dev_attr.max_sge;
>  		ep_attr->max_rdma_read_in = dev_attr.max_qp_rd_atom;
>  		ep_attr->max_rdma_read_out= dev_attr.max_qp_rd_atom;
> +		ep_attr->max_rdma_read_iov= dev_attr.max_sge;
> +		ep_attr->max_rdma_write_iov= dev_attr.max_sge;
>  		dapl_dbg_log (DAPL_DBG_TYPE_UTIL, 
>  			" query_hca: MAX msg %llu mtu %d dto %d iov %d"
>  			" rdma i%d,o%d\n", 
>   
This breaks iwarp which only allows 1 SGE for the local SGL in an rdma 
read.  I thought dev.max_qp_rd_atom indicated this value, not max_sge.  
So either this patch is wrong, or the rdma device attrs need to be 
enhanced to separate max_read_sge as a stand-alone attr.

Steve.