Hi Alex, Thanks much for your prompt response. I followed your code pointer and it works now :-)
Guest On Tue, Aug 31, 2010 at 8:49 AM, Duyck, Alexander H <[email protected]> wrote: > The problem is the ip_hdr value will not have been programmed on a received > packet. > > I would recommend taking a look at igb_lro_queue in our igb driver at > e1000.sf.net for an example of how to access the iphdr and tcphdr on a > packet. What is basically involved is making sure to access it after > eth_type_trans has been called and then adjusting the offsets appropriately. > > Thanks, > > Alex > >>-----Original Message----- >>From: Nirmal Guhan [mailto:[email protected]] >>Sent: Monday, August 30, 2010 6:49 PM >>To: [email protected] >>Subject: [E1000-devel] igb_main query >> >>Hi, >> >>I am trying to read the SKB and see if it is a TCP or UDP packet. >>However, ip_hdr(skb), always returns a NULL at igb_clean_rx_irq_adv(). >>Wondering if I am missing something very obvious ? >> >>Please let me know >> >>THanx >>Guest >> >> if (htons(ETH_P_IP) == skb->protocol) { >> struct iphdr *ip = ip_hdr(skb); >> if (ip && ((ip->protocol == IPPROTO_TCP) || >> (ip->protocol == IPPROTO_UDP))) { >> return (FALSE); >> } >> } >> >>---------------------------------------------------------------------- >>-------- >>This SF.net Dev2Dev email is sponsored by: >> >>Show off your parallel programming skills. >>Enter the Intel(R) Threading Challenge 2010. >>http://p.sf.net/sfu/intel-thread-sfd >>_______________________________________________ >>E1000-devel mailing list >>[email protected] >>https://lists.sourceforge.net/lists/listinfo/e1000-devel >>To learn more about Intel® Ethernet, visit >>http://communities.intel.com/community/wired > ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
