I have not enabled that feature myself, but I would expect it to work as long as the hardware does. What does the docs say about enabling hardware offload support? Did you look at the following files:
ip_reassembly/ipv4_rsmbl.h: m->ol_flags |= PKT_TX_IP_CKSUM; ipv4_frag/rte_ipv4_frag.h: out_pkt->ol_flags |= PKT_TX_IP_CKSUM; Thanks ++Keith Keith Wiles, Principal Technologist for Networking member of the CTO office, Wind River mobile 940.213.5533 [Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/> On Jan 24, 2014, at 12:54 PM, Banashankar KV <banveerad at gmail.com<mailto:banveerad at gmail.com>> wrote: I was modifying a packet in pktgen_pcap_mbuf_ctor() and after modifying I wanted to offload the checksum calculation to h/w so I am setting these flags in pktgen_pcap_mbuf_ctor function. m->pkt.vlan_macip.f.l2_len = sizeof(struct ether_hdr); m->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr); m->ol_flags = PKT_TX_IP_CKSUM I even tried with setting .txq_flags = 0 in rte_eth_txconf struct in pktgen.c. But still not able to get the h/w checksum. Am I missing anything ? Thanks Banashankar
