/* recv a pdu */ static void stub_rx_pdu(struct usbip_device *ud) { int ret; struct usbip_header pdu; struct stub_device *sdev = container_of(ud, struct stub_device, ud); dbg_stub_rx("Enter\n"); memset(&pdu, 0, sizeof(pdu)); /* 1. receive a pdu header */ dbg_stub_rx("before usbip_xmit\n"); ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu), 0); dbg_stub_rx("after usbip_xmit\n"); if (ret != sizeof(pdu)) { uerr("recv a header, %d\n", ret); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } usbip_header_correct_endian(&pdu, 0); if (dbg_flag_stub_rx) usbip_dump_header(&pdu); if (!valid_request(sdev, &pdu)) { uerr("recv invalid request\n"); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } #if CLIENT > 2 sdev->heartbeat_pending = 0; #endif switch (pdu.base.command) { case USBIP_CMD_UNLINK: stub_recv_cmd_unlink(sdev, &pdu); break; case USBIP_CMD_SUBMIT: stub_recv_cmd_submit(sdev, &pdu); break; #if CLIENT > 2 // added by tf, 110530 case USBIP_HEARTBEAT_REPLY: sdev->heartbeat_pending = 0; break; // end --- added #endif default: /* NOTREACHED */ uerr("unknown pdu\n"); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } }
int write_to_sock(char *buf, int len, SOCKET sockfd) { struct usbip_header *u; int ret; unsigned long out_len, iso_len; u=(struct usbip_header *)buf; if(len<sizeof(*u)){ err("read dev len: %d\n", len); return -1; } if(!u->base.direction) out_len=ntohl(u->u.cmd_submit.transfer_buffer_length); else out_len=0; if(u->u.cmd_submit.number_of_packets) iso_len=sizeof(struct usbip_iso_packet_descriptor)* ntohl(u->u.cmd_submit.number_of_packets); else iso_len=0; if(len!= sizeof(*u) + out_len + iso_len){ err("read dev len:%d out_len:%ld" "iso_len: %ld\n", len, out_len, iso_len); return -1; } if(!u->base.direction&&!record_out(u->base.seqnum)){ err("out q full"); return -1; } dbg_file("send seq:%d\r", ntohl(u->base.seqnum)); // fprintf(stderr,"Send sequence: %d\n", ntohl(u->base.seqnum)); ret=usbip_send(sockfd, buf, len); if(ret!=len){ err("send sock len:%d, ret:%d\n", len, ret); return -1; } #ifdef DEBUG { struct usbip_header cu; memcpy(&cu,u,sizeof(struct usbip_header)); usbip_header_correct_endian(&cu,0); usbip_dump_header(&cu); } #endif return 0; }
/* recv a pdu */ static void stub_rx_pdu(struct usbip_device *ud) { int ret; struct usbip_header pdu; struct stub_device *sdev = container_of(ud, struct stub_device, ud); dbg_stub_rx("Enter\n"); memset(&pdu, 0, sizeof(pdu)); /* 1. receive a pdu header */ ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu),0); if (ret != sizeof(pdu)) { uerr("recv a header, %d\n", ret); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } usbip_header_correct_endian(&pdu, 0); if (dbg_flag_stub_rx) usbip_dump_header(&pdu); if (!valid_request(sdev, &pdu)) { uerr("recv invalid request\n"); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } switch (pdu.base.command) { case USBIP_CMD_UNLINK: stub_recv_cmd_unlink(sdev, &pdu); break; case USBIP_CMD_SUBMIT: stub_recv_cmd_submit(sdev, &pdu); break; default: /* NOTREACHED */ uerr("unknown pdu\n"); usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); return; } }
int write_to_dev(char * buf, int buf_len, int len, SOCKET sockfd, HANDLE devfd, OVERLAPPED *ov) { int ret; unsigned long out=0, in_len, iso_len; struct usbip_header * u = (struct usbip_header *)buf; if(len!=sizeof(*u)){ err("read from sock ret %d not equal a usbip_header", len); #ifdef DEBUG usbip_dump_buffer(buf,len); #endif return -1; } if(usbip_header_correct_endian(u, 0)<0) return -1; dbg_file("recv seq %d\n", u->base.seqnum); if ((u->base.seqnum%100)==0) fprintf(stderr,"Receive sequence: %d\r", u->base.seqnum); #ifdef DEBUG usbip_dump_header(u); #endif if(check_out(htonl(u->base.seqnum))) in_len=0; else in_len=u->u.ret_submit.actual_length; iso_len = u->u.ret_submit.number_of_packets * sizeof(struct usbip_iso_packet_descriptor); if(in_len==0&&iso_len==0){ ret=WriteFile(devfd, (char *)u, sizeof(*u), &out, ov); if(!ret||out!=sizeof(*u)){ err("last error:%ld",GetLastError()); err("out:%ld ret:%d",out,ret); err("write dev failed"); return -1; } return 0; } len = sizeof(*u) + in_len + iso_len; if(len>buf_len){ err("too big len %d %ld %ld", len, in_len,iso_len); return -1; } ret=usbip_recv(sockfd, buf+sizeof(*u), in_len+iso_len); if(ret != in_len + iso_len){ err("recv from sock failed %d %ld", ret, in_len + iso_len); return -1; } if(iso_len) fix_iso_desc_endian(sock_read_buf+sizeof(*u)+in_len, u->u.ret_submit.number_of_packets); ret=WriteFile(devfd, buf, len, &out, ov); if(!ret||out!=len){ err("last error:%ld\n",GetLastError()); err("out:%ld ret:%d len:%d\n",out,ret,len); err("write dev failed"); return -1; } return 0; }