static void vde_to_qemu(void *opaque) { VDEState *s = opaque; uint8_t buf[NET_BUFSIZE]; int size; size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); if (size > 0) { qemu_send_packet(&s->nc, buf, size); } }
void wait_for_eth_nodes() { /*thread that waits for (vde) eth nodes*/ fd_set socketRead; char string_remote_address[100]; union ethframe message; mes *msg; int result; int count; int socketfd = vde_datafd(conn); if (conn == NULL) { printf("error: %s\n",strerror(errno)); } while(end) { memset(string_remote_address, 0, 100); count = 0; do { FD_ZERO(&socketRead); FD_SET(socketfd, &socketRead); result = select(socketfd + 1, &socketRead, 0, 0, 0); } while( (result < 0) && (errno == EINTR) ); if(FD_ISSET(socketfd, &socketRead)) { count = vde_recv(conn, message.buffer, ETH_FRAME_LEN, 0); msg = &(message.field.data.msg); } sprintf((char*)string_remote_address,"%s", message.field.header.h_source); if(msg->type == HI) { printf("ricevuto da socketfd %d msg: \"%s\" len %d, from host %.6s\n", socketfd, msg->text, count, message.field.header.h_source); if(!check_node_is_in(msg->text)) { pthread_mutex_lock(&threads_sync_lock); create_midi_node(msg->text, string_remote_address, VDE); printf("A new (vde) eth device arrived\n"); pthread_mutex_unlock(&threads_sync_lock);; } else printf("Eth device already in list\n"); } } close(socketfd); }
int vde_user_read(void *conn, void *buf, int len) { VDECONN *vconn = conn; int rv; if (vconn == NULL) return 0; rv = vde_recv(vconn, buf, len, 0); if (rv < 0) { if (errno == EAGAIN) return 0; return -errno; } else if (rv == 0) return -ENOTCONN; return rv; }
static int pico_vde_poll(struct pico_device *dev, int loop_score) { struct pico_device_vde *vde = (struct pico_device_vde *) dev; struct pollfd pfd; unsigned char buf[VDE_MTU]; int len; pfd.fd = vde_datafd(vde->conn); pfd.events = POLLIN; do { if (poll(&pfd, 1, 0) <= 0) return loop_score; len = vde_recv(vde->conn, buf, VDE_MTU, 0); if (len > 0) { /* dbg("Received pkt.\n"); */ loop_score--; pico_stack_recv(dev, buf, len); } } while(loop_score > 0); return 0; }
static int pico_vde_poll(struct pico_device *dev, int loop_score) { struct pico_device_vde *vde = (struct pico_device_vde *) dev; struct pollfd pfd; unsigned char buf[VDE_MTU]; int len; pfd.fd = vde_datafd(vde->conn); pfd.events = POLLIN; do { if (poll(&pfd, 1, 0) <= 0) return loop_score; len = vde_recv(vde->conn, buf, VDE_MTU, 0); if (len > 0) { //printf("Received pkt.\n"); if ((vde->lost_in == 0) || ((pico_rand() % 100) > vde->lost_in)) { loop_score--; pico_stack_recv(dev, buf, (uint32_t)len); } } } while(loop_score > 0); return 0; }
int main(int argc, char **argv) { static char *sockname=NULL; static char *tapname=NULL; int daemonize=0; int tapfd; register ssize_t nx; struct vde_open_args open_args={.port=0,.group=NULL,.mode=0700}; int c; static struct pollfd pollv[]={{0,POLLIN|POLLHUP}, {0,POLLIN|POLLHUP}, {0,POLLIN|POLLHUP}}; int npollv; prog=argv[0]; while (1) { int option_index = 0; static struct option long_options[] = { {"sock", 1, 0, 's'}, {"port", 1, 0, 'p'}, {"help",0,0,'h'}, {"mod",1,0,'m'}, {"group",1,0,'g'}, {"daemon",0,0,'d'}, {"pidfile", 1, 0, 'P'}, {0, 0, 0, 0} }; c = GETOPT_LONG (argc, argv, "hdP:p:s:m:g:", long_options, &option_index); if (c == -1) break; switch (c) { case 'p': open_args.port=atoi(optarg); if (open_args.port <= 0) usage(); //implies exit break; case 'h': usage(); //implies exit break; case 's': sockname=strdup(optarg); break; case 'm': sscanf(optarg,"%o",(unsigned int *)&(open_args.mode)); break; case 'g': open_args.group=strdup(optarg); break; case 'd': daemonize=1; break; case 'P': pidfile=strdup(optarg); break; default: usage(); //implies exit } } if (daemonize) { openlog(basename(prog), LOG_PID, 0); logok=1; syslog(LOG_INFO,"VDE_PLUG2TAP started"); } /* saves current path in pidfile_path, because otherwise with daemonize() we * forget it */ if(getcwd(pidfile_path, PATH_MAX-1) == NULL) { printlog(LOG_ERR, "getcwd: %s", strerror(errno)); exit(1); } strcat(pidfile_path, "/"); if (daemonize && daemon(0, 0)) { printlog(LOG_ERR,"daemon: %s",strerror(errno)); exit(1); } /* once here, we're sure we're the true process which will continue as a * server: save PID file if needed */ if(pidfile) save_pidfile(); if (optind < argc) tapname=argv[optind]; else usage(); // implies exit atexit(cleanup); setsighandlers(); tapfd=open_tap(tapname); if(tapfd<0) exit(1); pollv[0].fd=tapfd; if (sockname==NULL || strcmp(sockname,"-") != 0) { conn=vde_open(sockname,"vde_plug2tap:",&open_args); if (conn == NULL) { printlog(LOG_ERR,"vde_open %s: %s",sockname?sockname:"DEF_SWITCH",strerror(errno)); exit(1); } pollv[1].fd=vde_datafd(conn); pollv[2].fd=vde_ctlfd(conn); npollv=3; } else { vdestream=vdestream_open(&tapfd,STDOUT_FILENO,vde_plug2tap_recv,NULL); if (vdestream == NULL) exit(1); pollv[1].fd=STDIN_FILENO; npollv=2; } for(;;) { poll(pollv,3,-1); if ((pollv[0].revents | pollv[1].revents | pollv[2].revents) & POLLHUP || (npollv > 2 && pollv[2].revents & POLLIN)) break; if (pollv[0].revents & POLLIN) { nx=read(tapfd,bufin,sizeof(bufin)); /* if POLLIN but not data it means that the stream has been * closed at the other end */ //fprintf(stderr,"%s: RECV %d %x %x \n",prog,nx,bufin[0],bufin[1]); if (nx<=0) break; if (conn != NULL) vde_send(conn,bufin,nx,0); else vdestream_send(vdestream, bufin, nx); } if (pollv[1].revents & POLLIN) { if (conn != NULL) { nx=vde_recv(conn,bufin,sizeof(bufin),0); if (nx<=0) break; write(tapfd,bufin,nx); } else { nx=read(STDIN_FILENO,bufin,sizeof(bufin)); if (nx<=0) break; vdestream_recv(vdestream,bufin,nx); } //fprintf(stderr,"%s: SENT %d %x %x \n",prog,nx,bufin[0],bufin[1]); } } return(0); }
int main(int argc, char **argv) { static char *sockname=NULL; register ssize_t nx; struct vde_open_args open_args={.port=0,.group=NULL,.mode=0700}; uname(&me); //get the login name callerpwd=getpwuid(getuid()); if (argv[0][0] == '-') netusage(); //implies exit /* option parsing */ { int c; while (1) { int option_index = 0; static struct option long_options[] = { {"sock", 1, 0, 's'}, {"vdesock", 1, 0, 's'}, {"unix", 1, 0, 's'}, {"port", 1, 0, 'p'}, {"help",0,0,'h'}, {"mod",1,0,'m'}, {"group",1,0,'g'}, {0, 0, 0, 0} }; c = GETOPT_LONG (argc, argv, "hc:p:s:m:g:l", long_options, &option_index); if (c == -1) break; switch (c) { case 'c': if (strcmp(optarg,"vde_plug")==0) { #ifdef DO_SYSLOG write_syslog_entry("START"); atexit(write_syslog_close); #ifdef VDE_IP_LOG vde_ip_log=1; #endif #endif } else netusage(); //implies exit break; case 'p': open_args.port=atoi(optarg); if (open_args.port <= 0) usage(argv[0]); //implies exit break; case 'h': usage(argv[0]); //implies exit break; case 's': sockname=strdup(optarg); break; case 'm': sscanf(optarg,"%o",(unsigned int *)&(open_args.mode)); break; case 'g': open_args.group=strdup(optarg); break; case 'l': #ifdef VDE_IP_LOG write_syslog_entry("START"); atexit(write_syslog_close); vde_ip_log=1; break; #endif default: usage(argv[0]); //implies exit } } if (optind < argc && sockname==NULL) sockname=argv[optind]; } atexit(cleanup); setsighandlers(); conn=vde_open(sockname,"vde_plug:",&open_args); if (conn == NULL) { fprintf(stderr,"vde_open %s: %s\n",sockname?sockname:"DEF_SWITCH",strerror(errno)); exit(1); } vdestream=vdestream_open(conn,STDOUT_FILENO,vdeplug_recv,vdeplug_err); pollv[1].fd=vde_datafd(conn); pollv[2].fd=vde_ctlfd(conn); for(;;) { poll(pollv,3,-1); if ((pollv[0].revents | pollv[1].revents | pollv[2].revents) & POLLHUP || pollv[2].revents & POLLIN) break; if (pollv[0].revents & POLLIN) { nx=read(STDIN_FILENO,bufin,sizeof(bufin)); /* if POLLIN but not data it means that the stream has been * closed at the other end */ /*fprintf(stderr,"%s: RECV %d %x %x \n",myname,nx,bufin[0],bufin[1]);*/ if (nx==0) break; vdestream_recv(vdestream, bufin, nx); } if (pollv[1].revents & POLLIN) { nx=vde_recv(conn,bufin,BUFSIZE-2,0); if (nx<0) perror("vde_plug: recvfrom "); else { vdestream_send(vdestream, bufin, nx); /*fprintf(stderr,"%s: SENT %d %x %x \n",myname,nx,bufin[0],bufin[1]);*/ } } } return(0); }