diff options
| -rw-r--r-- | net.c | 6 | ||||
| -rw-r--r-- | net/socket.c | 77 | ||||
| -rw-r--r-- | qemu-options.hx | 2 |
3 files changed, 82 insertions, 3 deletions
@@ -1000,7 +1000,11 @@ static const struct { }, { .name = "localaddr", .type = QEMU_OPT_STRING, - .help = "source address for multicast packets", + .help = "source address and port for multicast and udp packets", + }, { + .name = "udp", + .type = QEMU_OPT_STRING, + .help = "UDP unicast address and port number", }, { /* end of list */ } }, diff --git a/net/socket.c b/net/socket.c index c9d70d388e..d4c2002923 100644 --- a/net/socket.c +++ b/net/socket.c @@ -534,6 +534,57 @@ static int net_socket_mcast_init(VLANState *vlan, } +static int net_socket_udp_init(VLANState *vlan, + const char *model, + const char *name, + const char *rhost, + const char *lhost) +{ + NetSocketState *s; + int fd, val, ret; + struct sockaddr_in laddr, raddr; + + if (parse_host_port(&laddr, lhost) < 0) { + return -1; + } + + if (parse_host_port(&raddr, rhost) < 0) { + return -1; + } + + fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + perror("socket(PF_INET, SOCK_DGRAM)"); + return -1; + } + val = 1; + ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, + (const char *)&val, sizeof(val)); + if (ret < 0) { + perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); + closesocket(fd); + return -1; + } + ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); + if (ret < 0) { + perror("bind"); + closesocket(fd); + return -1; + } + + s = net_socket_fd_init(vlan, model, name, fd, 0); + if (!s) { + return -1; + } + + s->dgram_dst = raddr; + + snprintf(s->nc.info_str, sizeof(s->nc.info_str), + "socket: udp=%s:%d", + inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port)); + return 0; +} + int net_init_socket(QemuOpts *opts, Monitor *mon, const char *name, @@ -606,10 +657,32 @@ int net_init_socket(QemuOpts *opts, if (net_socket_mcast_init(vlan, "socket", name, mcast, localaddr) == -1) { return -1; } + } else if (qemu_opt_get(opts, "udp")) { + const char *udp, *localaddr; + + if (qemu_opt_get(opts, "fd") || + qemu_opt_get(opts, "connect") || + qemu_opt_get(opts, "listen") || + qemu_opt_get(opts, "mcast")) { + error_report("fd=, connect=, listen=\ + and mcast= is invalid with udp="); + return -1; + } + + udp = qemu_opt_get(opts, "udp"); + localaddr = qemu_opt_get(opts, "localaddr"); + if (localaddr == NULL) { + error_report("localaddr= is mandatory with udp="); + return -1; + } + + if (net_socket_udp_init(vlan, "udp", name, udp, localaddr) == -1) { + return -1; + } } else { - error_report("-socket requires fd=, listen=, connect= or mcast="); + error_report("-socket requires fd=, listen=, \ + connect=, mcast= or udp="); return -1; } - return 0; } diff --git a/qemu-options.hx b/qemu-options.hx index 7903e5c11b..6295cde351 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1239,6 +1239,8 @@ DEF("net", HAS_ARG, QEMU_OPTION_net, "-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port[,localaddr=addr]]\n" " connect the vlan 'n' to multicast maddr and port\n" " use 'localaddr=addr' to specify the host address to send packets from\n" + "-net socket[,vlan=n][,name=str][,fd=h][,udp=host:port][,localaddr=host:port]\n" + " connect the vlan 'n' to another VLAN using an UDP tunnel\n" #ifdef CONFIG_VDE "-net vde[,vlan=n][,name=str][,sock=socketpath][,port=n][,group=groupname][,mode=octalmode]\n" " connect the vlan 'n' to port 'n' of a vde switch running\n" |