Re: [PATCH opensm] osm_resp.c: No need to swap DR [D/S]LIDs in resp_make_resp_smp

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> On 26 Nov 2018, at 14:27, Hal Rosenstock <hal@xxxxxxxxxxxxxxxxxx> wrote:
> 
> 
> C14-10.1.1 states that the DrSLID and DrDLID in the directed route response
> SMP shall be copied as is from the request SMP.
> 
> Pointed-out-by: Honggang Li <honli@xxxxxxxxxx>
> 
> Signed-off-by: Hal Rosenstock <hal@xxxxxxxxxxxx>
> ---
> opensm/osm_resp.c | 2 --
> 1 file changed, 2 deletions(-)
> 
> diff --git a/opensm/osm_resp.c b/opensm/osm_resp.c
> index 3f270e6..9a98df9 100644
> --- a/opensm/osm_resp.c
> +++ b/opensm/osm_resp.c
> @@ -85,8 +85,6 @@ static void resp_make_resp_smp(IN osm_sm_t * sm, IN const ib_smp_t * p_src_smp,
> 	if (p_src_smp->mgmt_class == IB_MCLASS_SUBN_DIR)
> 		p_dest_smp->status |= IB_SMP_DIRECTION;
> 
> -	p_dest_smp->dr_dlid = p_dest_smp->dr_slid;
> -	p_dest_smp->dr_slid = p_dest_smp->dr_dlid;
> 	memcpy(&p_dest_smp->data, p_payload, IB_SMP_DATA_SIZE);

This patch is correct, wrt. the IBTA spec, AFAICT.

However, this bug must have been present for ~1/8 century, and partially DR SMPs may be negative affected by this commit. Any thoughts on that?

Well, having raised the issue, then you have my:

Reviewed-by: Håkon Bugge <haakon.bugge@xxxxxxxxxx>


Thxs, Håkon









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