[openib-general] Re: [PATCH] IPoIB splitting CQ, increase both send/recv poll NUM_WC & interval

[Roland Dreier]

    Shirley> Since I haven't found any kernel use 128 bit address, I
    Shirley> use wr_id to save skb address, DMA mapping and other
    Shirley> stuffs are saved in skb->cb, which is the private data
    Shirley> for each protocal layer in skb. Same for rx_ring, so
    Shirley> rx_buff and tx_buff is not necessary to be used.

That sounds like a good plan.  Although I guess we want to keep around
some sort of rx ring if only to free receive buffers when bringing an
interface down.  But that could become a linked list with the
list_head in skb->cb I guess.

Does all this matter for performance?

 - R.