>
> Were you going to try it this way?
>
> /* First byte of dgid signals multicast/broadcast when 0xff */
> if ((wc->wc_flags & IB_WC_GRH) &&
> ((struct ib_grh *)skb->data)->dgid.raw[0] == 0xff) {
> if (memcmp(((struct ib_grh *)skb->data)->dgid.raw,
> dev->broadcast + 4, sizeof(union ib_gid)) ==
0)
> skb->pkt_type = PACKET_BROADCAST;
> else
> skb->pkt_type = PACKET_MULTICAST;
> }
> else
> skb->pkt_type = PACKET_HOST;
>
> I think doing the memcmp only in the multicast path should be
> reasonable overhead wise.
>
Shouldn't struct ib_grh be packed to make this really work?
The code looks a little messy to me anyway...
How about using a local var which is a ptr to packed struct ib_grh? The
compiler will probably eliminate it anyway.
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