net: move net.c to net/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 1056 deletions

diff --git a/net.c b/net.c
deleted file mode 100644
index 4f3d642468..0000000000
--- a/net.c
+++ /dev/null
@@ -1,1056 +0,0 @@
-/*
- * 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 "net.h"
-#include "net/clients.h"
-#include "net/hub.h"
-#include "net/slirp.h"
-#include "net/util.h"
-
-#include "monitor.h"
-#include "qemu-common.h"
-#include "qemu_socket.h"
-#include "qemu-config.h"
-#include "qmp-commands.h"
-#include "hw/qdev.h"
-#include "iov.h"
-#include "qapi-visit.h"
-#include "qapi/opts-visitor.h"
-#include "qapi/qapi-dealloc-visitor.h"
-
-/* Net bridge is currently not supported for W32. */
-#if !defined(_WIN32)
-# define CONFIG_NET_BRIDGE
-#endif
-
-static QTAILQ_HEAD(, NetClientState) net_clients;
-
-int default_net = 1;
-
-/***********************************************************/
-/* network device redirectors */
-
-#if defined(DEBUG_NET)
-static void hex_dump(FILE *f, const uint8_t *buf, int size)
-{
-    int len, i, j, c;
-
-    for(i=0;i<size;i+=16) {
-        len = size - i;
-        if (len > 16)
-            len = 16;
-        fprintf(f, "%08x ", i);
-        for(j=0;j<16;j++) {
-            if (j < len)
-                fprintf(f, " %02x", buf[i+j]);
-            else
-                fprintf(f, "   ");
-        }
-        fprintf(f, " ");
-        for(j=0;j<len;j++) {
-            c = buf[i+j];
-            if (c < ' ' || c > '~')
-                c = '.';
-            fprintf(f, "%c", c);
-        }
-        fprintf(f, "\n");
-    }
-}
-#endif
-
-static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
-{
-    const char *p, *p1;
-    int len;
-    p = *pp;
-    p1 = strchr(p, sep);
-    if (!p1)
-        return -1;
-    len = p1 - p;
-    p1++;
-    if (buf_size > 0) {
-        if (len > buf_size - 1)
-            len = buf_size - 1;
-        memcpy(buf, p, len);
-        buf[len] = '\0';
-    }
-    *pp = p1;
-    return 0;
-}
-
-int parse_host_port(struct sockaddr_in *saddr, const char *str)
-{
-    char buf[512];
-    struct hostent *he;
-    const char *p, *r;
-    int port;
-
-    p = str;
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
-        return -1;
-    saddr->sin_family = AF_INET;
-    if (buf[0] == '\0') {
-        saddr->sin_addr.s_addr = 0;
-    } else {
-        if (qemu_isdigit(buf[0])) {
-            if (!inet_aton(buf, &saddr->sin_addr))
-                return -1;
-        } else {
-            if ((he = gethostbyname(buf)) == NULL)
-                return - 1;
-            saddr->sin_addr = *(struct in_addr *)he->h_addr;
-        }
-    }
-    port = strtol(p, (char **)&r, 0);
-    if (r == p)
-        return -1;
-    saddr->sin_port = htons(port);
-    return 0;
-}
-
-void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
-{
-    snprintf(nc->info_str, sizeof(nc->info_str),
-             "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
-             nc->model,
-             macaddr[0], macaddr[1], macaddr[2],
-             macaddr[3], macaddr[4], macaddr[5]);
-}
-
-void qemu_macaddr_default_if_unset(MACAddr *macaddr)
-{
-    static int index = 0;
-    static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
-
-    if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
-        return;
-    macaddr->a[0] = 0x52;
-    macaddr->a[1] = 0x54;
-    macaddr->a[2] = 0x00;
-    macaddr->a[3] = 0x12;
-    macaddr->a[4] = 0x34;
-    macaddr->a[5] = 0x56 + index++;
-}
-
-/**
- * Generate a name for net client
- *
- * Only net clients created with the legacy -net option need this.  Naming is
- * mandatory for net clients created with -netdev.
- */
-static char *assign_name(NetClientState *nc1, const char *model)
-{
-    NetClientState *nc;
-    char buf[256];
-    int id = 0;
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        if (nc == nc1) {
-            continue;
-        }
-        /* For compatibility only bump id for net clients on a vlan */
-        if (strcmp(nc->model, model) == 0 &&
-            net_hub_id_for_client(nc, NULL) == 0) {
-            id++;
-        }
-    }
-
-    snprintf(buf, sizeof(buf), "%s.%d", model, id);
-
-    return g_strdup(buf);
-}
-
-NetClientState *qemu_new_net_client(NetClientInfo *info,
-                                    NetClientState *peer,
-                                    const char *model,
-                                    const char *name)
-{
-    NetClientState *nc;
-
-    assert(info->size >= sizeof(NetClientState));
-
-    nc = g_malloc0(info->size);
-
-    nc->info = info;
-    nc->model = g_strdup(model);
-    if (name) {
-        nc->name = g_strdup(name);
-    } else {
-        nc->name = assign_name(nc, model);
-    }
-
-    if (peer) {
-        assert(!peer->peer);
-        nc->peer = peer;
-        peer->peer = nc;
-    }
-    QTAILQ_INSERT_TAIL(&net_clients, nc, next);
-
-    nc->send_queue = qemu_new_net_queue(nc);
-
-    return nc;
-}
-
-NICState *qemu_new_nic(NetClientInfo *info,
-                       NICConf *conf,
-                       const char *model,
-                       const char *name,
-                       void *opaque)
-{
-    NetClientState *nc;
-    NICState *nic;
-
-    assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
-    assert(info->size >= sizeof(NICState));
-
-    nc = qemu_new_net_client(info, conf->peer, model, name);
-
-    nic = DO_UPCAST(NICState, nc, nc);
-    nic->conf = conf;
-    nic->opaque = opaque;
-
-    return nic;
-}
-
-static void qemu_cleanup_net_client(NetClientState *nc)
-{
-    QTAILQ_REMOVE(&net_clients, nc, next);
-
-    if (nc->info->cleanup) {
-        nc->info->cleanup(nc);
-    }
-}
-
-static void qemu_free_net_client(NetClientState *nc)
-{
-    if (nc->send_queue) {
-        qemu_del_net_queue(nc->send_queue);
-    }
-    if (nc->peer) {
-        nc->peer->peer = NULL;
-    }
-    g_free(nc->name);
-    g_free(nc->model);
-    g_free(nc);
-}
-
-void qemu_del_net_client(NetClientState *nc)
-{
-    /* If there is a peer NIC, delete and cleanup client, but do not free. */
-    if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
-        NICState *nic = DO_UPCAST(NICState, nc, nc->peer);
-        if (nic->peer_deleted) {
-            return;
-        }
-        nic->peer_deleted = true;
-        /* Let NIC know peer is gone. */
-        nc->peer->link_down = true;
-        if (nc->peer->info->link_status_changed) {
-            nc->peer->info->link_status_changed(nc->peer);
-        }
-        qemu_cleanup_net_client(nc);
-        return;
-    }
-
-    /* If this is a peer NIC and peer has already been deleted, free it now. */
-    if (nc->peer && nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
-        NICState *nic = DO_UPCAST(NICState, nc, nc);
-        if (nic->peer_deleted) {
-            qemu_free_net_client(nc->peer);
-        }
-    }
-
-    qemu_cleanup_net_client(nc);
-    qemu_free_net_client(nc);
-}
-
-void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
-{
-    NetClientState *nc;
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
-            func(DO_UPCAST(NICState, nc, nc), opaque);
-        }
-    }
-}
-
-int qemu_can_send_packet(NetClientState *sender)
-{
-    if (!sender->peer) {
-        return 1;
-    }
-
-    if (sender->peer->receive_disabled) {
-        return 0;
-    } else if (sender->peer->info->can_receive &&
-               !sender->peer->info->can_receive(sender->peer)) {
-        return 0;
-    }
-    return 1;
-}
-
-ssize_t qemu_deliver_packet(NetClientState *sender,
-                            unsigned flags,
-                            const uint8_t *data,
-                            size_t size,
-                            void *opaque)
-{
-    NetClientState *nc = opaque;
-    ssize_t ret;
-
-    if (nc->link_down) {
-        return size;
-    }
-
-    if (nc->receive_disabled) {
-        return 0;
-    }
-
-    if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
-        ret = nc->info->receive_raw(nc, data, size);
-    } else {
-        ret = nc->info->receive(nc, data, size);
-    }
-
-    if (ret == 0) {
-        nc->receive_disabled = 1;
-    };
-
-    return ret;
-}
-
-void qemu_purge_queued_packets(NetClientState *nc)
-{
-    if (!nc->peer) {
-        return;
-    }
-
-    qemu_net_queue_purge(nc->peer->send_queue, nc);
-}
-
-void qemu_flush_queued_packets(NetClientState *nc)
-{
-    nc->receive_disabled = 0;
-
-    if (qemu_net_queue_flush(nc->send_queue)) {
-        /* We emptied the queue successfully, signal to the IO thread to repoll
-         * the file descriptor (for tap, for example).
-         */
-        qemu_notify_event();
-    }
-}
-
-static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
-                                                 unsigned flags,
-                                                 const uint8_t *buf, int size,
-                                                 NetPacketSent *sent_cb)
-{
-    NetQueue *queue;
-
-#ifdef DEBUG_NET
-    printf("qemu_send_packet_async:\n");
-    hex_dump(stdout, buf, size);
-#endif
-
-    if (sender->link_down || !sender->peer) {
-        return size;
-    }
-
-    queue = sender->peer->send_queue;
-
-    return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
-}
-
-ssize_t qemu_send_packet_async(NetClientState *sender,
-                               const uint8_t *buf, int size,
-                               NetPacketSent *sent_cb)
-{
-    return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
-                                             buf, size, sent_cb);
-}
-
-void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
-{
-    qemu_send_packet_async(nc, buf, size, NULL);
-}
-
-ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
-{
-    return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
-                                             buf, size, NULL);
-}
-
-static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
-                               int iovcnt)
-{
-    uint8_t buffer[4096];
-    size_t offset;
-
-    offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
-
-    return nc->info->receive(nc, buffer, offset);
-}
-
-ssize_t qemu_deliver_packet_iov(NetClientState *sender,
-                                unsigned flags,
-                                const struct iovec *iov,
-                                int iovcnt,
-                                void *opaque)
-{
-    NetClientState *nc = opaque;
-    int ret;
-
-    if (nc->link_down) {
-        return iov_size(iov, iovcnt);
-    }
-
-    if (nc->receive_disabled) {
-        return 0;
-    }
-
-    if (nc->info->receive_iov) {
-        ret = nc->info->receive_iov(nc, iov, iovcnt);
-    } else {
-        ret = nc_sendv_compat(nc, iov, iovcnt);
-    }
-
-    if (ret == 0) {
-        nc->receive_disabled = 1;
-    }
-
-    return ret;
-}
-
-ssize_t qemu_sendv_packet_async(NetClientState *sender,
-                                const struct iovec *iov, int iovcnt,
-                                NetPacketSent *sent_cb)
-{
-    NetQueue *queue;
-
-    if (sender->link_down || !sender->peer) {
-        return iov_size(iov, iovcnt);
-    }
-
-    queue = sender->peer->send_queue;
-
-    return qemu_net_queue_send_iov(queue, sender,
-                                   QEMU_NET_PACKET_FLAG_NONE,
-                                   iov, iovcnt, sent_cb);
-}
-
-ssize_t
-qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
-{
-    return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
-}
-
-NetClientState *qemu_find_netdev(const char *id)
-{
-    NetClientState *nc;
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
-            continue;
-        if (!strcmp(nc->name, id)) {
-            return nc;
-        }
-    }
-
-    return NULL;
-}
-
-static int nic_get_free_idx(void)
-{
-    int index;
-
-    for (index = 0; index < MAX_NICS; index++)
-        if (!nd_table[index].used)
-            return index;
-    return -1;
-}
-
-int qemu_show_nic_models(const char *arg, const char *const *models)
-{
-    int i;
-
-    if (!arg || !is_help_option(arg)) {
-        return 0;
-    }
-
-    fprintf(stderr, "qemu: Supported NIC models: ");
-    for (i = 0 ; models[i]; i++)
-        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
-    return 1;
-}
-
-void qemu_check_nic_model(NICInfo *nd, const char *model)
-{
-    const char *models[2];
-
-    models[0] = model;
-    models[1] = NULL;
-
-    if (qemu_show_nic_models(nd->model, models))
-        exit(0);
-    if (qemu_find_nic_model(nd, models, model) < 0)
-        exit(1);
-}
-
-int qemu_find_nic_model(NICInfo *nd, const char * const *models,
-                        const char *default_model)
-{
-    int i;
-
-    if (!nd->model)
-        nd->model = g_strdup(default_model);
-
-    for (i = 0 ; models[i]; i++) {
-        if (strcmp(nd->model, models[i]) == 0)
-            return i;
-    }
-
-    error_report("Unsupported NIC model: %s", nd->model);
-    return -1;
-}
-
-static int net_init_nic(const NetClientOptions *opts, const char *name,
-                        NetClientState *peer)
-{
-    int idx;
-    NICInfo *nd;
-    const NetLegacyNicOptions *nic;
-
-    assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
-    nic = opts->nic;
-
-    idx = nic_get_free_idx();
-    if (idx == -1 || nb_nics >= MAX_NICS) {
-        error_report("Too Many NICs");
-        return -1;
-    }
-
-    nd = &nd_table[idx];
-
-    memset(nd, 0, sizeof(*nd));
-
-    if (nic->has_netdev) {
-        nd->netdev = qemu_find_netdev(nic->netdev);
-        if (!nd->netdev) {
-            error_report("netdev '%s' not found", nic->netdev);
-            return -1;
-        }
-    } else {
-        assert(peer);
-        nd->netdev = peer;
-    }
-    if (name) {
-        nd->name = g_strdup(name);
-    }
-    if (nic->has_model) {
-        nd->model = g_strdup(nic->model);
-    }
-    if (nic->has_addr) {
-        nd->devaddr = g_strdup(nic->addr);
-    }
-
-    if (nic->has_macaddr &&
-        net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
-        error_report("invalid syntax for ethernet address");
-        return -1;
-    }
-    qemu_macaddr_default_if_unset(&nd->macaddr);
-
-    if (nic->has_vectors) {
-        if (nic->vectors > 0x7ffffff) {
-            error_report("invalid # of vectors: %"PRIu32, nic->vectors);
-            return -1;
-        }
-        nd->nvectors = nic->vectors;
-    } else {
-        nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
-    }
-
-    nd->used = 1;
-    nb_nics++;
-
-    return idx;
-}
-
-
-static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
-    const NetClientOptions *opts,
-    const char *name,
-    NetClientState *peer) = {
-        [NET_CLIENT_OPTIONS_KIND_NIC]       = net_init_nic,
-#ifdef CONFIG_SLIRP
-        [NET_CLIENT_OPTIONS_KIND_USER]      = net_init_slirp,
-#endif
-        [NET_CLIENT_OPTIONS_KIND_TAP]       = net_init_tap,
-        [NET_CLIENT_OPTIONS_KIND_SOCKET]    = net_init_socket,
-#ifdef CONFIG_VDE
-        [NET_CLIENT_OPTIONS_KIND_VDE]       = net_init_vde,
-#endif
-        [NET_CLIENT_OPTIONS_KIND_DUMP]      = net_init_dump,
-#ifdef CONFIG_NET_BRIDGE
-        [NET_CLIENT_OPTIONS_KIND_BRIDGE]    = net_init_bridge,
-#endif
-        [NET_CLIENT_OPTIONS_KIND_HUBPORT]   = net_init_hubport,
-};
-
-
-static int net_client_init1(const void *object, int is_netdev, Error **errp)
-{
-    union {
-        const Netdev    *netdev;
-        const NetLegacy *net;
-    } u;
-    const NetClientOptions *opts;
-    const char *name;
-
-    if (is_netdev) {
-        u.netdev = object;
-        opts = u.netdev->opts;
-        name = u.netdev->id;
-
-        switch (opts->kind) {
-#ifdef CONFIG_SLIRP
-        case NET_CLIENT_OPTIONS_KIND_USER:
-#endif
-        case NET_CLIENT_OPTIONS_KIND_TAP:
-        case NET_CLIENT_OPTIONS_KIND_SOCKET:
-#ifdef CONFIG_VDE
-        case NET_CLIENT_OPTIONS_KIND_VDE:
-#endif
-#ifdef CONFIG_NET_BRIDGE
-        case NET_CLIENT_OPTIONS_KIND_BRIDGE:
-#endif
-        case NET_CLIENT_OPTIONS_KIND_HUBPORT:
-            break;
-
-        default:
-            error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
-                      "a netdev backend type");
-            return -1;
-        }
-    } else {
-        u.net = object;
-        opts = u.net->opts;
-        /* missing optional values have been initialized to "all bits zero" */
-        name = u.net->has_id ? u.net->id : u.net->name;
-    }
-
-    if (net_client_init_fun[opts->kind]) {
-        NetClientState *peer = NULL;
-
-        /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
-         * parameter. */
-        if (!is_netdev &&
-            (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
-             !opts->nic->has_netdev)) {
-            peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
-        }
-
-        if (net_client_init_fun[opts->kind](opts, name, peer) < 0) {
-            /* TODO push error reporting into init() methods */
-            error_set(errp, QERR_DEVICE_INIT_FAILED,
-                      NetClientOptionsKind_lookup[opts->kind]);
-            return -1;
-        }
-    }
-    return 0;
-}
-
-
-static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
-{
-    if (is_netdev) {
-        visit_type_Netdev(v, (Netdev **)object, NULL, errp);
-    } else {
-        visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
-    }
-}
-
-
-int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
-{
-    void *object = NULL;
-    Error *err = NULL;
-    int ret = -1;
-
-    {
-        OptsVisitor *ov = opts_visitor_new(opts);
-
-        net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
-        opts_visitor_cleanup(ov);
-    }
-
-    if (!err) {
-        ret = net_client_init1(object, is_netdev, &err);
-    }
-
-    if (object) {
-        QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
-
-        net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
-        qapi_dealloc_visitor_cleanup(dv);
-    }
-
-    error_propagate(errp, err);
-    return ret;
-}
-
-
-static int net_host_check_device(const char *device)
-{
-    int i;
-    const char *valid_param_list[] = { "tap", "socket", "dump"
-#ifdef CONFIG_NET_BRIDGE
-                                       , "bridge"
-#endif
-#ifdef CONFIG_SLIRP
-                                       ,"user"
-#endif
-#ifdef CONFIG_VDE
-                                       ,"vde"
-#endif
-    };
-    for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
-        if (!strncmp(valid_param_list[i], device,
-                     strlen(valid_param_list[i])))
-            return 1;
-    }
-
-    return 0;
-}
-
-void net_host_device_add(Monitor *mon, const QDict *qdict)
-{
-    const char *device = qdict_get_str(qdict, "device");
-    const char *opts_str = qdict_get_try_str(qdict, "opts");
-    Error *local_err = NULL;
-    QemuOpts *opts;
-
-    if (!net_host_check_device(device)) {
-        monitor_printf(mon, "invalid host network device %s\n", device);
-        return;
-    }
-
-    opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
-    if (!opts) {
-        return;
-    }
-
-    qemu_opt_set(opts, "type", device);
-
-    net_client_init(opts, 0, &local_err);
-    if (error_is_set(&local_err)) {
-        qerror_report_err(local_err);
-        error_free(local_err);
-        monitor_printf(mon, "adding host network device %s failed\n", device);
-    }
-}
-
-void net_host_device_remove(Monitor *mon, const QDict *qdict)
-{
-    NetClientState *nc;
-    int vlan_id = qdict_get_int(qdict, "vlan_id");
-    const char *device = qdict_get_str(qdict, "device");
-
-    nc = net_hub_find_client_by_name(vlan_id, device);
-    if (!nc) {
-        return;
-    }
-    if (!net_host_check_device(nc->model)) {
-        monitor_printf(mon, "invalid host network device %s\n", device);
-        return;
-    }
-    qemu_del_net_client(nc);
-}
-
-void netdev_add(QemuOpts *opts, Error **errp)
-{
-    net_client_init(opts, 1, errp);
-}
-
-int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret)
-{
-    Error *local_err = NULL;
-    QemuOptsList *opts_list;
-    QemuOpts *opts;
-
-    opts_list = qemu_find_opts_err("netdev", &local_err);
-    if (error_is_set(&local_err)) {
-        goto exit_err;
-    }
-
-    opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
-    if (error_is_set(&local_err)) {
-        goto exit_err;
-    }
-
-    netdev_add(opts, &local_err);
-    if (error_is_set(&local_err)) {
-        qemu_opts_del(opts);
-        goto exit_err;
-    }
-
-    return 0;
-
-exit_err:
-    qerror_report_err(local_err);
-    error_free(local_err);
-    return -1;
-}
-
-void qmp_netdev_del(const char *id, Error **errp)
-{
-    NetClientState *nc;
-    QemuOpts *opts;
-
-    nc = qemu_find_netdev(id);
-    if (!nc) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, id);
-        return;
-    }
-
-    opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
-    if (!opts) {
-        error_setg(errp, "Device '%s' is not a netdev", id);
-        return;
-    }
-
-    qemu_del_net_client(nc);
-    qemu_opts_del(opts);
-}
-
-void print_net_client(Monitor *mon, NetClientState *nc)
-{
-    monitor_printf(mon, "%s: type=%s,%s\n", nc->name,
-                   NetClientOptionsKind_lookup[nc->info->type], nc->info_str);
-}
-
-void do_info_network(Monitor *mon)
-{
-    NetClientState *nc, *peer;
-    NetClientOptionsKind type;
-
-    net_hub_info(mon);
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        peer = nc->peer;
-        type = nc->info->type;
-
-        /* Skip if already printed in hub info */
-        if (net_hub_id_for_client(nc, NULL) == 0) {
-            continue;
-        }
-
-        if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
-            print_net_client(mon, nc);
-        } /* else it's a netdev connected to a NIC, printed with the NIC */
-        if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
-            monitor_printf(mon, " \\ ");
-            print_net_client(mon, peer);
-        }
-    }
-}
-
-void qmp_set_link(const char *name, bool up, Error **errp)
-{
-    NetClientState *nc = NULL;
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        if (!strcmp(nc->name, name)) {
-            goto done;
-        }
-    }
-done:
-    if (!nc) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, name);
-        return;
-    }
-
-    nc->link_down = !up;
-
-    if (nc->info->link_status_changed) {
-        nc->info->link_status_changed(nc);
-    }
-
-    /* Notify peer. Don't update peer link status: this makes it possible to
-     * disconnect from host network without notifying the guest.
-     * FIXME: is disconnected link status change operation useful?
-     *
-     * Current behaviour is compatible with qemu vlans where there could be
-     * multiple clients that can still communicate with each other in
-     * disconnected mode. For now maintain this compatibility. */
-    if (nc->peer && nc->peer->info->link_status_changed) {
-        nc->peer->info->link_status_changed(nc->peer);
-    }
-}
-
-void net_cleanup(void)
-{
-    NetClientState *nc, *next_vc;
-
-    QTAILQ_FOREACH_SAFE(nc, &net_clients, next, next_vc) {
-        qemu_del_net_client(nc);
-    }
-}
-
-void net_check_clients(void)
-{
-    NetClientState *nc;
-    int i;
-
-    /* Don't warn about the default network setup that you get if
-     * no command line -net or -netdev options are specified. There
-     * are two cases that we would otherwise complain about:
-     * (1) board doesn't support a NIC but the implicit "-net nic"
-     * requested one
-     * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
-     * sets up a nic that isn't connected to anything.
-     */
-    if (default_net) {
-        return;
-    }
-
-    net_hub_check_clients();
-
-    QTAILQ_FOREACH(nc, &net_clients, next) {
-        if (!nc->peer) {
-            fprintf(stderr, "Warning: %s %s has no peer\n",
-                    nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
-                    "nic" : "netdev", nc->name);
-        }
-    }
-
-    /* Check that all NICs requested via -net nic actually got created.
-     * NICs created via -device don't need to be checked here because
-     * they are always instantiated.
-     */
-    for (i = 0; i < MAX_NICS; i++) {
-        NICInfo *nd = &nd_table[i];
-        if (nd->used && !nd->instantiated) {
-            fprintf(stderr, "Warning: requested NIC (%s, model %s) "
-                    "was not created (not supported by this machine?)\n",
-                    nd->name ? nd->name : "anonymous",
-                    nd->model ? nd->model : "unspecified");
-        }
-    }
-}
-
-static int net_init_client(QemuOpts *opts, void *dummy)
-{
-    Error *local_err = NULL;
-
-    net_client_init(opts, 0, &local_err);
-    if (error_is_set(&local_err)) {
-        qerror_report_err(local_err);
-        error_free(local_err);
-        return -1;
-    }
-
-    return 0;
-}
-
-static int net_init_netdev(QemuOpts *opts, void *dummy)
-{
-    Error *local_err = NULL;
-    int ret;
-
-    ret = net_client_init(opts, 1, &local_err);
-    if (error_is_set(&local_err)) {
-        qerror_report_err(local_err);
-        error_free(local_err);
-        return -1;
-    }
-
-    return ret;
-}
-
-int net_init_clients(void)
-{
-    QemuOptsList *net = qemu_find_opts("net");
-
-    if (default_net) {
-        /* if no clients, we use a default config */
-        qemu_opts_set(net, NULL, "type", "nic");
-#ifdef CONFIG_SLIRP
-        qemu_opts_set(net, NULL, "type", "user");
-#endif
-    }
-
-    QTAILQ_INIT(&net_clients);
-
-    if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
-        return -1;
-
-    if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
-        return -1;
-    }
-
-    return 0;
-}
-
-int net_client_parse(QemuOptsList *opts_list, const char *optarg)
-{
-#if defined(CONFIG_SLIRP)
-    int ret;
-    if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
-        return ret;
-    }
-#endif
-
-    if (!qemu_opts_parse(opts_list, optarg, 1)) {
-        return -1;
-    }
-
-    default_net = 0;
-    return 0;
-}
-
-/* From FreeBSD */
-/* XXX: optimize */
-unsigned compute_mcast_idx(const uint8_t *ep)
-{
-    uint32_t crc;
-    int carry, i, j;
-    uint8_t b;
-
-    crc = 0xffffffff;
-    for (i = 0; i < 6; i++) {
-        b = *ep++;
-        for (j = 0; j < 8; j++) {
-            carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
-            crc <<= 1;
-            b >>= 1;
-            if (carry) {
-                crc = ((crc ^ POLYNOMIAL) | carry);
-            }
-        }
-    }
-    return crc >> 26;
-}