[ofa-general] [PATCH 1/3] mcast loopback block

[Ralph Campbell]

On Mon, 2008-06-02 at 20:52 +0300, Olga Shern (Voltaire) wrote:
> 
> 
> On 6/2/08, Ralph Campbell <ralph.campbell at qlogic.com> wrote: 
>         What do you mean by "block loopback"?
>         Does this mean a posted send WR for a multicast packet
>         that matches the local LID is not sent at all or
>         the packet is sent on the wire but not sent to
>         the local QP? Or is it something else?
>  
>  
> It controls the ConnectX HCA multicast packets block loopback
> (blck_lb) for self QP. The patch is designed to enable or 
> 
> disable blocking of all multicast packets on self QP created on the
> ConnectX HCA

I understand that the patch enables/disables the bit.
You didn't really answer my question which is what does
the bit really do. I'm pretty sure it means that multicast
packets aren't forwarded to any locally attached QPs
but I wanted to be sure that is what it does.