On Wed, 18 Jul 2007 23:51:03 -0700 (PDT) vinay ravuri <[EMAIL PROTECTED]> wrote:
> How about the following approach: > > I allocate an skb of 0 bytes and replace data element > of skb struct (i.e. skb.data = addr_given_by_hw) when > the h/w interrupts me with a packet. I register for a > destructor for this skb and when the kernel is ready > to free the skb, I make sure that my free is invoked - > Ofcourse this is assuming that their is a facility in > linux socket buffers to be able to do destructors. Is > this approach a viable, if so, are any gottcha's? > > -Vinay You need to use frag list for that since upper layers expect to be able to use that data area for normal use, ie bridging/routing, etc. Also access to data area would be non-cached so you want to make sure it is only accessed once. But how will you handle a slow receiver where all the skb's end up staying queued. Won't you exhaust your packet memory. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
