Re: [PATCH v3 infiniband-diags] ibdiag_common.c: Disambiguate link speed when QDR and could be FDR10

[Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>]

Reviewed-By: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

On Tue, Dec 20, 2016 at 11:28:38AM -0500, Hal Rosenstock wrote:
> 
> Rather than printing "Could be FDR10", print
> "Could be FDR10 (Found link at QDR but expected speed is FDR10)"
> for this case.
> 
> Confusion is with words "Could be" and fact that both
> QDR and FDR10 are both 10.0 Gbps.
> 
> Signed-off-by: Hal Rosenstock <hal-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> ---
> Change since v2:
> Added Active comment to clarify value of 4 for PortInfo:LinkSpeedActive
> 
> Change since v1:
> Preserved original "Could be FDR10" so can grep for "Could be"
> along with adding new language.
> 
>  src/ibdiag_common.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/src/ibdiag_common.c b/src/ibdiag_common.c
> index f74eed4..8cad03a 100644
> --- a/src/ibdiag_common.c
> +++ b/src/ibdiag_common.c
> @@ -814,8 +814,14 @@ check_ext_speed:
>  
>  check_fdr10_active:
>  	if ((mad_get_field(port->ext_info, 0,
> -			   IB_MLNX_EXT_PORT_LINK_SPEED_ACTIVE_F) & FDR10) == 0)
> -		snprintf(speed_msg, msg_size, "Could be FDR10");
> +			   IB_MLNX_EXT_PORT_LINK_SPEED_ACTIVE_F) & FDR10) == 0) {
> +		/* Special case QDR to try to avoid confusion with FDR10 */
> +		if (mad_get_field(port->info, 0, IB_PORT_LINK_SPEED_ACTIVE_F) == 4)	/* QDR (10.0 Gbps) */
> +			snprintf(speed_msg, msg_size,
> +				 "Could be FDR10 (Found link at QDR but expected speed is FDR10)");
> +		else
> +			snprintf(speed_msg, msg_size, "Could be FDR10");
> +	}
>  }
>  
>  int vsnprint_field(char *buf, size_t n, enum MAD_FIELDS f, int spacing,
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html