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.
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