Hi, I'm using libvhost-user.a to write a vhost backend, in order to receive and send packets from/to VMs from OVS. I started by reading the vhost-user-bridge.c. I can now pass the initialization stage, seeing .queue_set_started get invoked.
However, I am stuck at receiving the packet from VM. So is it correct to do: 1) check vu_queue_empty, started, and aval_bytes, if OK, then 2) elem = vu_queue_pop(&dev->vudev, vq, sizeof(VuVirtqElement)); 3) the packet payload should be at elem->in_sg->iov_base + hdrlen? or at elem->out_sg? I tried to hex dump the iov_base, but the content doesn't look like having a ethernet header. I saw in vubr_backend_recv_cb at vhost-user-bridge.c, we're creating another iovec and recvmsg(vubr->backend_udp_sock, &msg, 0); I don't think I have to create backend UDP sock, am I correct? Thanks William
