/* * QEMU System Emulator * * Copyright (c) 2003-2008 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "config-host.h" #include <libvdeplug.h> #include "net/net.h" #include "clients.h" #include "qemu-common.h" #include "qemu/option.h" #include "qemu/main-loop.h" typedef struct VDEState { NetClientState nc; VDECONN *vde; } VDEState; 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); } } static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size) { VDEState *s = DO_UPCAST(VDEState, nc, nc); ssize_t ret; do { ret = vde_send(s->vde, (const char *)buf, size, 0); } while (ret < 0 && errno == EINTR); return ret; } static void vde_cleanup(NetClientState *nc) { VDEState *s = DO_UPCAST(VDEState, nc, nc); qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); vde_close(s->vde); } static NetClientInfo net_vde_info = { .type = NET_CLIENT_OPTIONS_KIND_VDE, .size = sizeof(VDEState), .receive = vde_receive, .cleanup = vde_cleanup, }; static int net_vde_init(NetClientState *peer, const char *model, const char *name, const char *sock, int port, const char *group, int mode) { NetClientState *nc; VDEState *s; VDECONN *vde; char *init_group = (char *)group; char *init_sock = (char *)sock; struct vde_open_args args = { .port = port, .group = init_group, .mode = mode, }; vde = vde_open(init_sock, (char *)"QEMU", &args); if (!vde){ return -1; } nc = qemu_new_net_client(&net_vde_info, peer, model, name); snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d", sock, vde_datafd(vde)); s = DO_UPCAST(VDEState, nc, nc); s->vde = vde; qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); return 0; } int net_init_vde(const NetClientOptions *opts, const char *name, NetClientState *peer) { const NetdevVdeOptions *vde; assert(opts->kind == NET_CLIENT_OPTIONS_KIND_VDE); vde = opts->vde; /* missing optional values have been initialized to "all bits zero" */ if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group, vde->has_mode ? vde->mode : 0700) == -1) { return -1; } return 0; }