Hi Andrew, > > + length = 1514; > > + } > > + > > + memset(pframe, 0, UMAC_MAX_FRAME_SIZE); > > + memcpy(pframe, skb->data, length); > Is this cached or uncached memory? uncached is expansive so you want > to avoid touching it twice. Depending on how busy your cache is, > touching it twice might cause it to expelled from L1 on the first > write, so you could be writing to L2 twice for no reason. Do the math > and calculate the tail space you need to zero. > I would also suggest you look at the page pool code and use that for > all you buffer handling. It is likely to be more efficient than what > you have here. Would this be the #include <linux/dmapool.h> library? Thank you for the assistance, -Nick Hawkins
