Hi, No, source IP address differ in packets.Even I change source port also in packets. Regards Varun On Tue, May 27, 2014 at 11:54 PM, Marcelo Ricardo Leitner <marcelo.leitner at gmail.com> wrote: > Em 25-05-2014 07:35, Varun Sharma escreveu: >> Hi, >> >> I am experimenting with libnetfilter_queue. libnetfilter_queue is a >> userspace library providing an API to packets that have been queued by >> the kernel packet filter. >> >> I am using sample code(nfqnl_test.c) available on netfilter.org. I >> have generated two binaries (queue0 and queue1) using that >> nfqnl_test.c sample code. >> >> These binaries are working as per expected behaviour in case of Centos >> 6.2 but with Centos 6.5 only one queue is receiving network traffic. >> >> I am not able to understand why only one queue is receiving network >> traffic in case of Centos 6.5 whereas same network traffic is being >> distributed in both the queues with Centos 6.2. >> >> uname –a :- >> >> Linux hwcentos8 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC >> 2013 x86_64 x86_64 x86_64 GNU/Linux >> >> Machine Info: >> >> 16 core machine with 64GB RAM. >> >> Command used for iptables in Centos 6.5 :- >> >> iptables -A INPUT -j NFQUEUE --queue-balance 0:1 >> >> >> Output In Centos 6.5 :- >> >> >> [varun at exp2 ~]$ ./queue0 >> >> opening library handle >> >> unbinding existing nf_queue handler for AF_INET (if any) >> >> binding nfnetlink_queue as nf_queue handler for AF_INET >> >> binding this socket to queue '0' >> >> setting copy_packet mode >> >> pkt received >> >> queue0 hw_protocol=0x0800 hook=1 id=0 hw_src_addr=fc:4d:d4:d3:7f:73 >> indev=2 payload_len=40 >> >> entering callback >> >> pkt received >> >> queue0 hw_protocol=0x0800 hook=1 id=1 hw_src_addr=fc:4d:d4:d3:7f:73 >> indev=2 payload_len=40 >> >> entering callback >> >> pkt received >> >> queue0 hw_protocol=0x0800 hook=1 id=2 hw_src_addr=fc:4d:d4:d3:7f:73 >> indev=2 payload_len=40 >> >> entering callback >> >> pkt received >> >> queue0 hw_protocol=0x0800 hook=1 id=3 hw_src_addr=fc:4d:d4:f1:e1:5f >> indev=2 payload_len=78 >> >> entering callback >> >> >> >> [varun at exp2 ~]$ ./queue1 >> >> opening library handle >> >> unbinding existing nf_queue handler for AF_INET (if any) >> >> binding nfnetlink_queue as nf_queue handler for AF_INET >> >> binding this socket to queue '1' >> >> setting copy_packet mode >> >> >> >> >> Please let me know if more information is required. > > Hi, > > Considering the MAC address is the same, should I assume both IP > addresses are the same too? Because it balances according to the hash of > src ip, dst ip and ip proto (tcp, udp..). > > That is, all packets from a single tcp stream will always go through the > same queue, avoiding re-ordering. > > Cheers, > Marcelo > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos