On Sat, Aug 24, 2013 at 8:15 AM, Rakesh B.K <bk.rak...@ymail.com> wrote: > Hello, > > Here is another addition to my previous comment. > > I had a walk-through on some parts of openVSwitch datapath code. Here is my > analysis on why the checksum is being set to 0x0000 instead of 0xFFFF: > 1. when the flow look-up table entry does not match with the key(when > the function ovs_flow_tbl_lookup() returns false). > 2. During no flow entry, a new netlink message will be created and the > packet received from vnetX(guest interface netdev_port) is copied > using the function skb_copy_and_csum_dev(). After this, the > skb->ip_summed bit field is set to CHECKSUM_NONE. > > For the checksum to be correct, the flow table lookup returns true and > forwards the packet from vnetX(Guest interfce netdev_port) to ethX(Host) > interface. > > Please let me know if my observations are correct.
Yes, that's right. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
