Quoting r. Shirley Ma <[EMAIL PROTECTED]>: > IPoIB is not a real driver. Packets can be dropped from dev xmit queue to > QPs send queue directly. Why we use tx_ring to induce overhead in > send path?
As I see it, rx_ring and tx_ring are mostly to keep the dma mapping. The fact that we have to track it implies I think a level of indirection and since the number of these matches the qp size, it seems best to allocate them at interface up and not dynamically. But: by all means please go ahead and experiment: I was just trying to help with these suggestions - I'll guess we'll see what you come up with. In particular, lots of people recommend looking at NAPI as a way to reduce iterrupt rate on receive. -- Michael S. Tsirkin Staff Engineer, Mellanox Technologies _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
