zhangwei1984

Two machines with 10G NIC directly connect each other
nn22 and nn23

step 1: create one VF on nn23 
echo 1 > /sys/bus/pci/devices/0000:07:00.0/sriov_numvfs

Before bind VF to vfid-pci, try to ping this VF from nn22 (IP 12.0.0.22)
step 2:  assign IP to this VF p2p1_0 12.0.0.23

p2p1      Link encap:Ethernet  HWaddr 90:e2:ba:4a:e8:08  

zhangwei1984

struct ether_hdr* eth;
struct rte_mbuf *pkt = batch->pkts[i];
eth = rte_pktmbuf_mtod(pkt, struct ether_hdr *);

the related macro:
#define 	rte_pktmbuf_mtod_offset(m, t, o)   ((t)((char *)(m)->buf_addr + (m)->data_off + (o)))
#define 	rte_pktmbuf_mtod(m, t)   rte_pktmbuf_mtod_offset(m, t, 0)