On 7/18/2016 6:27 PM, Sergio Gonzalez Monroy wrote: > Hi, > > On 18/07/2016 13:41, Akhil Goyal wrote: >> Hi, >> >> In Ipsec-secgw application, while adding the outer IP header, it seems >> that the application does not update the checksum value for outbound >> packets. This result in incorrect ip->checksum in the encrypted packet. >> >> Please let me know if the checksum value is updated somewhere else or >> not. >> >> Also In case of inner ip header also the TTL value is decremented by >> one but the checksum value is not updated. Is it intentional or it is >> done somewhere else? > > It is intentional. The application is using IP checksum offload but just > looking now at the code there is a bug for IPv6 packets where the flag > does not get setup. > Is it only for IPv6 traffic that you are having this issue? > > For IPv4 traffic the PKT_TX_IP_CKSUM flag is setup in 'prepare_tx_pkt' > function in ipsec-secgw.c > > Sergio >
Thanks Sergio, got your point. I missed the flag. I was using it for IPv4. Akhil
