[ofa-general] Re: [PATCH] mlx4: display misc device information via sysfs under /sys/class/infiniband/mlx4_x, for ibstat and ibv_devinfo

Jack Morgenstein jackm at dev.mellanox.co.il
Mon Oct 1 00:48:40 PDT 2007


On Wednesday 26 September 2007 21:54, Roland Dreier wrote:
> I had to edit the patch, because of:
> 
>  >      MLX4_MGM_ENTRY_SIZE     =  0x100,
> 
> this context didn't match the upstream kernel (I see 0x40 there).  Is
> there some reason you have a bigger size in your tree?  If so should
> we make the change upstream too?

Yes, the change should go upstream.  With an MGM entry size of 64, each multicast group
can support only 8 QPs.  Increasing the entry size to 256 enables support of 56 QPs per
multicast group (8 QPs per multicast group was not enough for some users).

- Jack




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