| /* |
| * 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 "qemu/osdep.h" |
| |
| #include <libvdeplug.h> |
| |
| #include "net/net.h" |
| #include "clients.h" |
| #include "qemu-common.h" |
| #include "qemu/option.h" |
| #include "qemu/main-loop.h" |
| #include "qapi/error.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_DRIVER_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, Error **errp) |
| { |
| 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){ |
| error_setg_errno(errp, errno, "Could not open 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 Netdev *netdev, const char *name, |
| NetClientState *peer, Error **errp) |
| { |
| const NetdevVdeOptions *vde; |
| |
| assert(netdev->type == NET_CLIENT_DRIVER_VDE); |
| vde = &netdev->u.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, errp) == -1) { |
| return -1; |
| } |
| |
| return 0; |
| } |