Re: [PATCHv3] opensm: Add support for optimized SLtoVLMappingTable programming

[Sasha Khapyorsky <sashak-smomgflXvOZWk0Htik3J/w@public.gmane.org>]

On 08:35 Thu 07 Jan     , Hal Rosenstock wrote:
> >
> > diff --git a/opensm/opensm/osm_qos.c b/opensm/opensm/osm_qos.c
> > index f54e995..6bbbfa2 100644
> > --- a/opensm/opensm/osm_qos.c
> > +++ b/opensm/opensm/osm_qos.c
> > @@ -1,5 +1,6 @@
> >  /*
> >  * Copyright (c) 2006-2009 Voltaire, Inc. All rights reserved.
> > + * Copyright (c) 2009 HNR Consulting. All rights reserved.
> >  *
> >  * This software is available to you under a choice of one of two
> >  * licenses.  You may choose to be licensed under the terms of the GNU
> > @@ -157,14 +158,13 @@ static ib_api_status_t vlarb_update(osm_sm_t * sm, osm_physp_t * p,
> >  }
> >
> >  static ib_api_status_t sl2vl_update_table(osm_sm_t * sm, osm_physp_t * p,
> > -                                         uint8_t in_port, uint8_t out_port,
> > +                                         uint8_t in_port, uint32_t attr_mod,
> >                                          unsigned force_update,
> >                                          const ib_slvl_table_t * sl2vl_table)
> >  {
> >        osm_madw_context_t context;
> >        ib_slvl_table_t tbl, *p_tbl;
> >        osm_node_t *p_node = osm_physp_get_node_ptr(p);
> > -       uint32_t attr_mod;
> >        ib_api_status_t status;
> >        unsigned vl_mask;
> >        uint8_t vl1, vl2;
> > @@ -189,7 +189,6 @@ static ib_api_status_t sl2vl_update_table(osm_sm_t * sm, osm_physp_t * p,
> >        context.slvl_context.node_guid = osm_node_get_node_guid(p_node);
> >        context.slvl_context.port_guid = osm_physp_get_port_guid(p);
> >        context.slvl_context.set_method = TRUE;
> > -       attr_mod = in_port << 8 | out_port;
> >        status = osm_req_set(sm, osm_physp_get_dr_path_ptr(p),
> >                             (uint8_t *) & tbl, sizeof(tbl),
> >                             IB_MAD_ATTR_SLVL_TABLE, cl_hton32(attr_mod),
> > @@ -223,12 +222,20 @@ static int qos_extports_setup(osm_sm_t * sm, osm_node_t *node,
> >        if (!(p0->port_info.capability_mask & IB_PORT_CAP_HAS_SL_MAP))
> >                return ret;
> >
> > +       if (ib_switch_info_get_opt_sl2vlmapping(&node->sw->switch_info) &&
> > +           sm->p_subn->opt.use_optimized_slvl) {
> > +               p = osm_node_get_physp_ptr(node, 1);
> > +               force_update = p->need_update || sm->p_subn->need_update;
> > +               return sl2vl_update_table(sm, p, 1, 0x30000, force_update,
> > +                                         &qcfg->sl2vl);
> > +       }
> > +
> >        for (i = 1; i < num_ports; i++) {
> >                p = osm_node_get_physp_ptr(node, i);
> >                force_update = p->need_update || sm->p_subn->need_update;
> >                for (j = 0; j < num_ports; j++)
> > -                       if (sl2vl_update_table(sm, p, i, j, force_update,
> > -                                              &qcfg->sl2vl))
> > +                       if (sl2vl_update_table(sm, p, i, i << 8 | j,
> > +                                              force_update, &qcfg->sl2vl))
> >                                ret = -1;
> >        }
> >
> >
> > , does it look fine for you?
> 
> In the optimized case, doesn't this send extra SL2VL mapping table ?

I don't see how, could you elaborate?

Sasha

> Couldn''t that be eliminated by checking for this in the new endport
> routine (and skipping the remainder of that routine) ?
> 
> -- Hal
> 
> >
> > Sasha
> > --
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> 
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