Re: [PATCH] opensm/mcast_tbl: set max_mlid_ho as actually configured mlid

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

On 09:48 Fri 30 Oct     , Hal Rosenstock wrote:
> >
> > diff --git a/opensm/opensm/osm_mcast_tbl.c b/opensm/opensm/osm_mcast_tbl.c
> > index b5ae6f2..eee9290 100644
> > --- a/opensm/opensm/osm_mcast_tbl.c
> > +++ b/opensm/opensm/osm_mcast_tbl.c
> > @@ -122,7 +122,7 @@ int osm_mcast_tbl_realloc(IN osm_mcast_tbl_t * p_tbl, IN
> > uintn_t mlid_offset)
> >        uint16_t (*p_mask_tbl)[][IB_MCAST_POSITION_MAX];
> >
> >        if (mlid_offset < p_tbl->mft_depth)
> > -               return 0;
> > +               goto done;
> 
> Why should max_mlid_ho be changed when < mft_depth ?

To be equal to an actually configured max mlid value (not a size of
mcast table allocation).

> Doing so makes group removal not work properly.

This may have this issue, but not due to fact of max_mlid_ho change, but
due to invalid check in osm_mcast_tbl_clear_mlid(). I think there it
should be something like:

diff --git a/opensm/opensm/osm_mcast_tbl.c b/opensm/opensm/osm_mcast_tbl.c
index 0a45904..a599e56 100644
--- a/opensm/opensm/osm_mcast_tbl.c
+++ b/opensm/opensm/osm_mcast_tbl.c
@@ -245,8 +245,8 @@ void osm_mcast_tbl_clear_mlid(IN osm_mcast_tbl_t * p_tbl, IN uint16_t mlid_ho)
 	CL_ASSERT(p_tbl);
 	CL_ASSERT(mlid_ho >= IB_LID_MCAST_START_HO);
 
-	if (p_tbl->p_mask_tbl && mlid_ho <= p_tbl->max_mlid_ho) {
-		mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
+	mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
+	if (p_tbl->p_mask_tbl && mlid_offset < p_tbl->mft_depth) {
 		for (i = 0; i <= p_tbl->max_position; i++)
 			(*p_tbl->p_mask_tbl)[mlid_offset][i] = 0;
 	}

Does it make sense?

Sasha
--
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