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

[Ralph Campbell]

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?

On Mon, 2008-06-02 at 17:30 +0000, Ron Livne wrote:
> mcast block loopback patch [1/3]
> 
> ib_verbs: add mcast block loopback capability to the ib device.
> 
> This patch adds a capability flag for blocking mcast loopback
> packets in an ib device.
> 
> 
> Signed-off-by: Ron Livne <ronli at voltaire.com>
> 
> 
> Index: kernels/linux-2.6.26-rc2/include/rdma/ib_verbs.h
> ===================================================================
> --- kernels.orig/linux-2.6.26-rc2/include/rdma/ib_verbs.h	2008-05-19 13:38:13.000000000 +0300
> +++ kernels/linux-2.6.26-rc2/include/rdma/ib_verbs.h	2008-05-19 13:38:16.000000000 +0300
> @@ -106,6 +106,7 @@ enum ib_device_cap_flags {
>  	IB_DEVICE_UD_IP_CSUM		= (1<<18),
>  	IB_DEVICE_UD_TSO		= (1<<19),
>  	IB_DEVICE_SEND_W_INV		= (1<<21),
> +	IB_DEVICE_BLOCK_LOOPBACK        = (1<<22),
>  };
> 
>  enum ib_atomic_cap {
> @@ -500,6 +501,7 @@ enum ib_qp_type {
> 
>  enum ib_qp_create_flags {
>  	IB_QP_CREATE_IPOIB_UD_LSO	= 1 << 0,
> +	IB_QP_BLOCK_LOOPBACK            = 1 << 1,
>  };
> 
>  struct ib_qp_init_attr {
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