Return to vde.c CVS log

Up to [Qemu by Fabrice Bellard] / qemu / net

Annotation of qemu/net/vde.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU System Emulator
        !             3:  *
        !             4:  * Copyright (c) 2003-2008 Fabrice Bellard
        !             5:  *
        !             6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
        !             7:  * of this software and associated documentation files (the "Software"), to deal
        !             8:  * in the Software without restriction, including without limitation the rights
        !             9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
        !            10:  * copies of the Software, and to permit persons to whom the Software is
        !            11:  * furnished to do so, subject to the following conditions:
        !            12:  *
        !            13:  * The above copyright notice and this permission notice shall be included in
        !            14:  * all copies or substantial portions of the Software.
        !            15:  *
        !            16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        !            17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
        !            19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        !            20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
        !            21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
        !            22:  * THE SOFTWARE.
        !            23:  */
        !            24: #include "net/vde.h"
        !            25: 
        !            26: #include "config-host.h"
        !            27: 
        !            28: #include <libvdeplug.h>
        !            29: 
        !            30: #include "net.h"
        !            31: #include "qemu-char.h"
        !            32: #include "qemu-common.h"
        !            33: #include "qemu-option.h"
        !            34: #include "sysemu.h"
        !            35: 
        !            36: typedef struct VDEState {
        !            37:     VLANClientState nc;
        !            38:     VDECONN *vde;
        !            39: } VDEState;
        !            40: 
        !            41: static void vde_to_qemu(void *opaque)
        !            42: {
        !            43:     VDEState *s = opaque;
        !            44:     uint8_t buf[4096];
        !            45:     int size;
        !            46: 
        !            47:     size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
        !            48:     if (size > 0) {
        !            49:         qemu_send_packet(&s->nc, buf, size);
        !            50:     }
        !            51: }
        !            52: 
        !            53: static ssize_t vde_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
        !            54: {
        !            55:     VDEState *s = DO_UPCAST(VDEState, nc, nc);
        !            56:     ssize_t ret;
        !            57: 
        !            58:     do {
        !            59:       ret = vde_send(s->vde, (const char *)buf, size, 0);
        !            60:     } while (ret < 0 && errno == EINTR);
        !            61: 
        !            62:     return ret;
        !            63: }
        !            64: 
        !            65: static void vde_cleanup(VLANClientState *nc)
        !            66: {
        !            67:     VDEState *s = DO_UPCAST(VDEState, nc, nc);
        !            68:     qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
        !            69:     vde_close(s->vde);
        !            70: }
        !            71: 
        !            72: static NetClientInfo net_vde_info = {
        !            73:     .type = NET_CLIENT_TYPE_VDE,
        !            74:     .size = sizeof(VDEState),
        !            75:     .receive = vde_receive,
        !            76:     .cleanup = vde_cleanup,
        !            77: };
        !            78: 
        !            79: static int net_vde_init(VLANState *vlan, const char *model,
        !            80:                         const char *name, const char *sock,
        !            81:                         int port, const char *group, int mode)
        !            82: {
        !            83:     VLANClientState *nc;
        !            84:     VDEState *s;
        !            85:     VDECONN *vde;
        !            86:     char *init_group = (char *)group;
        !            87:     char *init_sock = (char *)sock;
        !            88: 
        !            89:     struct vde_open_args args = {
        !            90:         .port = port,
        !            91:         .group = init_group,
        !            92:         .mode = mode,
        !            93:     };
        !            94: 
        !            95:     vde = vde_open(init_sock, (char *)"QEMU", &args);
        !            96:     if (!vde){
        !            97:         return -1;
        !            98:     }
        !            99: 
        !           100:     nc = qemu_new_net_client(&net_vde_info, vlan, NULL, model, name);
        !           101: 
        !           102:     snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d",
        !           103:              sock, vde_datafd(vde));
        !           104: 
        !           105:     s = DO_UPCAST(VDEState, nc, nc);
        !           106: 
        !           107:     s->vde = vde;
        !           108: 
        !           109:     qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
        !           110: 
        !           111:     return 0;
        !           112: }
        !           113: 
        !           114: int net_init_vde(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan)
        !           115: {
        !           116:     const char *sock;
        !           117:     const char *group;
        !           118:     int port, mode;
        !           119: 
        !           120:     sock  = qemu_opt_get(opts, "sock");
        !           121:     group = qemu_opt_get(opts, "group");
        !           122: 
        !           123:     port = qemu_opt_get_number(opts, "port", 0);
        !           124:     mode = qemu_opt_get_number(opts, "mode", 0700);
        !           125: 
        !           126:     if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
        !           127:         return -1;
        !           128:     }
        !           129: 
        !           130:     if (vlan) {
        !           131:         vlan->nb_host_devs++;
        !           132:     }
        !           133: 
        !           134:     return 0;
        !           135: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.