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/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config-host.h"
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#include "net.h"
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27 |
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#include "net/clients.h"
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#include "net/hub.h"
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#include "net/slirp.h"
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#include "net/util.h"
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#include "monitor.h"
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#include "qemu-common.h"
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#include "qemu_socket.h"
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#include "qemu-config.h"
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#include "qmp-commands.h"
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#include "hw/qdev.h"
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#include "iov.h"
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#include "qapi-visit.h"
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#include "qapi/opts-visitor.h"
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#include "qapi/qapi-dealloc-visitor.h"
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/* Net bridge is currently not supported for W32. */
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#if !defined(_WIN32)
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# define CONFIG_NET_BRIDGE
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#endif
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static QTAILQ_HEAD(, NetClientState) net_clients;
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int default_net = 1;
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/***********************************************************/
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53 |
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/* network device redirectors */
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#if defined(DEBUG_NET)
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static void hex_dump(FILE *f, const uint8_t *buf, int size)
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{
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int len, i, j, c;
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for(i=0;i<size;i+=16) {
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len = size - i;
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62 |
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if (len > 16)
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len = 16;
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fprintf(f, "%08x ", i);
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for(j=0;j<16;j++) {
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if (j < len)
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fprintf(f, " %02x", buf[i+j]);
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else
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fprintf(f, " ");
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}
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fprintf(f, " ");
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for(j=0;j<len;j++) {
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c = buf[i+j];
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74 |
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if (c < ' ' || c > '~')
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c = '.';
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fprintf(f, "%c", c);
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}
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fprintf(f, "\n");
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79 |
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}
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80 |
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}
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#endif
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
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{
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const char *p, *p1;
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int len;
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p = *pp;
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p1 = strchr(p, sep);
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if (!p1)
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return -1;
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len = p1 - p;
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p1++;
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if (buf_size > 0) {
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if (len > buf_size - 1)
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len = buf_size - 1;
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memcpy(buf, p, len);
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buf[len] = '\0';
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}
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*pp = p1;
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return 0;
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101 |
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}
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int parse_host_port(struct sockaddr_in *saddr, const char *str)
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{
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char buf[512];
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struct hostent *he;
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const char *p, *r;
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int port;
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p = str;
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
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return -1;
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saddr->sin_family = AF_INET;
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114 |
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if (buf[0] == '\0') {
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saddr->sin_addr.s_addr = 0;
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} else {
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117 |
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if (qemu_isdigit(buf[0])) {
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118 |
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if (!inet_aton(buf, &saddr->sin_addr))
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return -1;
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} else {
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if ((he = gethostbyname(buf)) == NULL)
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return - 1;
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saddr->sin_addr = *(struct in_addr *)he->h_addr;
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}
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}
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port = strtol(p, (char **)&r, 0);
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127 |
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if (r == p)
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return -1;
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saddr->sin_port = htons(port);
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return 0;
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}
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void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
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{
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snprintf(nc->info_str, sizeof(nc->info_str),
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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nc->model,
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macaddr[0], macaddr[1], macaddr[2],
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macaddr[3], macaddr[4], macaddr[5]);
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}
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void qemu_macaddr_default_if_unset(MACAddr *macaddr)
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{
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static int index = 0;
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static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
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if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
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return;
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macaddr->a[0] = 0x52;
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macaddr->a[1] = 0x54;
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macaddr->a[2] = 0x00;
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macaddr->a[3] = 0x12;
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macaddr->a[4] = 0x34;
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macaddr->a[5] = 0x56 + index++;
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}
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/**
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* Generate a name for net client
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*
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* Only net clients created with the legacy -net option need this. Naming is
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* mandatory for net clients created with -netdev.
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*/
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static char *assign_name(NetClientState *nc1, const char *model)
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164 |
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{
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165 |
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NetClientState *nc;
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char buf[256];
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int id = 0;
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168 |
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QTAILQ_FOREACH(nc, &net_clients, next) {
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170 |
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if (nc == nc1) {
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continue;
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}
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/* For compatibility only bump id for net clients on a vlan */
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174 |
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if (strcmp(nc->model, model) == 0 &&
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net_hub_id_for_client(nc, NULL) == 0) {
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id++;
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}
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}
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snprintf(buf, sizeof(buf), "%s.%d", model, id);
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return g_strdup(buf);
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}
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NetClientState *qemu_new_net_client(NetClientInfo *info,
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NetClientState *peer,
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const char *model,
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const char *name)
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{
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NetClientState *nc;
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assert(info->size >= sizeof(NetClientState));
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nc = g_malloc0(info->size);
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nc->info = info;
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nc->model = g_strdup(model);
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if (name) {
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nc->name = g_strdup(name);
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} else {
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nc->name = assign_name(nc, model);
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}
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203 |
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if (peer) {
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assert(!peer->peer);
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nc->peer = peer;
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peer->peer = nc;
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}
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QTAILQ_INSERT_TAIL(&net_clients, nc, next);
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nc->send_queue = qemu_new_net_queue(nc);
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return nc;
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}
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NICState *qemu_new_nic(NetClientInfo *info,
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NICConf *conf,
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const char *model,
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const char *name,
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void *opaque)
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{
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NetClientState *nc;
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NICState *nic;
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assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
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assert(info->size >= sizeof(NICState));
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nc = qemu_new_net_client(info, conf->peer, model, name);
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nic = DO_UPCAST(NICState, nc, nc);
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nic->conf = conf;
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232 |
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nic->opaque = opaque;
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return nic;
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}
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static void qemu_cleanup_net_client(NetClientState *nc)
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238 |
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{
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239 |
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QTAILQ_REMOVE(&net_clients, nc, next);
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240 |
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241 |
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if (nc->info->cleanup) {
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242 |
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nc->info->cleanup(nc);
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243 |
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}
|
244 |
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}
|
245 |
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246 |
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static void qemu_free_net_client(NetClientState *nc)
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247 |
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{
|
248 |
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if (nc->send_queue) {
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249 |
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qemu_del_net_queue(nc->send_queue);
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250 |
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}
|
251 |
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if (nc->peer) {
|
252 |
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nc->peer->peer = NULL;
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253 |
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}
|
254 |
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g_free(nc->name);
|
255 |
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g_free(nc->model);
|
256 |
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g_free(nc);
|
257 |
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}
|
258 |
|
|
259 |
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void qemu_del_net_client(NetClientState *nc)
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260 |
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{
|
261 |
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/* If there is a peer NIC, delete and cleanup client, but do not free. */
|
262 |
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if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
|
263 |
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NICState *nic = DO_UPCAST(NICState, nc, nc->peer);
|
264 |
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if (nic->peer_deleted) {
|
265 |
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return;
|
266 |
|
}
|
267 |
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nic->peer_deleted = true;
|
268 |
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/* Let NIC know peer is gone. */
|
269 |
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nc->peer->link_down = true;
|
270 |
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if (nc->peer->info->link_status_changed) {
|
271 |
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nc->peer->info->link_status_changed(nc->peer);
|
272 |
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}
|
273 |
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qemu_cleanup_net_client(nc);
|
274 |
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return;
|
275 |
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}
|
276 |
|
|
277 |
|
/* If this is a peer NIC and peer has already been deleted, free it now. */
|
278 |
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if (nc->peer && nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
|
279 |
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NICState *nic = DO_UPCAST(NICState, nc, nc);
|
280 |
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if (nic->peer_deleted) {
|
281 |
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qemu_free_net_client(nc->peer);
|
282 |
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}
|
283 |
|
}
|
284 |
|
|
285 |
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qemu_cleanup_net_client(nc);
|
286 |
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qemu_free_net_client(nc);
|
287 |
|
}
|
288 |
|
|
289 |
|
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
|
290 |
|
{
|
291 |
|
NetClientState *nc;
|
292 |
|
|
293 |
|
QTAILQ_FOREACH(nc, &net_clients, next) {
|
294 |
|
if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
|
295 |
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func(DO_UPCAST(NICState, nc, nc), opaque);
|
296 |
|
}
|
297 |
|
}
|
298 |
|
}
|
299 |
|
|
300 |
|
int qemu_can_send_packet(NetClientState *sender)
|
301 |
|
{
|
302 |
|
if (!sender->peer) {
|
303 |
|
return 1;
|
304 |
|
}
|
305 |
|
|
306 |
|
if (sender->peer->receive_disabled) {
|
307 |
|
return 0;
|
308 |
|
} else if (sender->peer->info->can_receive &&
|
309 |
|
!sender->peer->info->can_receive(sender->peer)) {
|
310 |
|
return 0;
|
311 |
|
}
|
312 |
|
return 1;
|
313 |
|
}
|
314 |
|
|
315 |
|
ssize_t qemu_deliver_packet(NetClientState *sender,
|
316 |
|
unsigned flags,
|
317 |
|
const uint8_t *data,
|
318 |
|
size_t size,
|
319 |
|
void *opaque)
|
320 |
|
{
|
321 |
|
NetClientState *nc = opaque;
|
322 |
|
ssize_t ret;
|
323 |
|
|
324 |
|
if (nc->link_down) {
|
325 |
|
return size;
|
326 |
|
}
|
327 |
|
|
328 |
|
if (nc->receive_disabled) {
|
329 |
|
return 0;
|
330 |
|
}
|
331 |
|
|
332 |
|
if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
|
333 |
|
ret = nc->info->receive_raw(nc, data, size);
|
334 |
|
} else {
|
335 |
|
ret = nc->info->receive(nc, data, size);
|
336 |
|
}
|
337 |
|
|
338 |
|
if (ret == 0) {
|
339 |
|
nc->receive_disabled = 1;
|
340 |
|
};
|
341 |
|
|
342 |
|
return ret;
|
343 |
|
}
|
344 |
|
|
345 |
|
void qemu_purge_queued_packets(NetClientState *nc)
|
346 |
|
{
|
347 |
|
if (!nc->peer) {
|
348 |
|
return;
|
349 |
|
}
|
350 |
|
|
351 |
|
qemu_net_queue_purge(nc->peer->send_queue, nc);
|
352 |
|
}
|
353 |
|
|
354 |
|
void qemu_flush_queued_packets(NetClientState *nc)
|
355 |
|
{
|
356 |
|
nc->receive_disabled = 0;
|
357 |
|
|
358 |
|
if (qemu_net_queue_flush(nc->send_queue)) {
|
359 |
|
/* We emptied the queue successfully, signal to the IO thread to repoll
|
360 |
|
* the file descriptor (for tap, for example).
|
361 |
|
*/
|
362 |
|
qemu_notify_event();
|
363 |
|
}
|
364 |
|
}
|
365 |
|
|
366 |
|
static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
|
367 |
|
unsigned flags,
|
368 |
|
const uint8_t *buf, int size,
|
369 |
|
NetPacketSent *sent_cb)
|
370 |
|
{
|
371 |
|
NetQueue *queue;
|
372 |
|
|
373 |
|
#ifdef DEBUG_NET
|
374 |
|
printf("qemu_send_packet_async:\n");
|
375 |
|
hex_dump(stdout, buf, size);
|
376 |
|
#endif
|
377 |
|
|
378 |
|
if (sender->link_down || !sender->peer) {
|
379 |
|
return size;
|
380 |
|
}
|
381 |
|
|
382 |
|
queue = sender->peer->send_queue;
|
383 |
|
|
384 |
|
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
385 |
|
}
|
386 |
|
|
387 |
|
ssize_t qemu_send_packet_async(NetClientState *sender,
|
388 |
|
const uint8_t *buf, int size,
|
389 |
|
NetPacketSent *sent_cb)
|
390 |
|
{
|
391 |
|
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
392 |
|
buf, size, sent_cb);
|
393 |
|
}
|
394 |
|
|
395 |
|
void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
|
396 |
|
{
|
397 |
|
qemu_send_packet_async(nc, buf, size, NULL);
|
398 |
|
}
|
399 |
|
|
400 |
|
ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
|
401 |
|
{
|
402 |
|
return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
|
403 |
|
buf, size, NULL);
|
404 |
|
}
|
405 |
|
|
406 |
|
static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
|
407 |
|
int iovcnt)
|
408 |
|
{
|
409 |
|
uint8_t buffer[4096];
|
410 |
|
size_t offset;
|
411 |
|
|
412 |
|
offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
|
413 |
|
|
414 |
|
return nc->info->receive(nc, buffer, offset);
|
415 |
|
}
|
416 |
|
|
417 |
|
ssize_t qemu_deliver_packet_iov(NetClientState *sender,
|
418 |
|
unsigned flags,
|
419 |
|
const struct iovec *iov,
|
420 |
|
int iovcnt,
|
421 |
|
void *opaque)
|
422 |
|
{
|
423 |
|
NetClientState *nc = opaque;
|
424 |
|
int ret;
|
425 |
|
|
426 |
|
if (nc->link_down) {
|
427 |
|
return iov_size(iov, iovcnt);
|
428 |
|
}
|
429 |
|
|
430 |
|
if (nc->receive_disabled) {
|
431 |
|
return 0;
|
432 |
|
}
|
433 |
|
|
434 |
|
if (nc->info->receive_iov) {
|
435 |
|
ret = nc->info->receive_iov(nc, iov, iovcnt);
|
436 |
|
} else {
|
437 |
|
ret = nc_sendv_compat(nc, iov, iovcnt);
|
438 |
|
}
|
439 |
|
|
440 |
|
if (ret == 0) {
|
441 |
|
nc->receive_disabled = 1;
|
442 |
|
}
|
443 |
|
|
444 |
|
return ret;
|
445 |
|
}
|
446 |
|
|
447 |
|
ssize_t qemu_sendv_packet_async(NetClientState *sender,
|
448 |
|
const struct iovec *iov, int iovcnt,
|
449 |
|
NetPacketSent *sent_cb)
|
450 |
|
{
|
451 |
|
NetQueue *queue;
|
452 |
|
|
453 |
|
if (sender->link_down || !sender->peer) {
|
454 |
|
return iov_size(iov, iovcnt);
|
455 |
|
}
|
456 |
|
|
457 |
|
queue = sender->peer->send_queue;
|
458 |
|
|
459 |
|
return qemu_net_queue_send_iov(queue, sender,
|
460 |
|
QEMU_NET_PACKET_FLAG_NONE,
|
461 |
|
iov, iovcnt, sent_cb);
|
462 |
|
}
|
463 |
|
|
464 |
|
ssize_t
|
465 |
|
qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
|
466 |
|
{
|
467 |
|
return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
|
468 |
|
}
|
469 |
|
|
470 |
|
NetClientState *qemu_find_netdev(const char *id)
|
471 |
|
{
|
472 |
|
NetClientState *nc;
|
473 |
|
|
474 |
|
QTAILQ_FOREACH(nc, &net_clients, next) {
|
475 |
|
if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
|
476 |
|
continue;
|
477 |
|
if (!strcmp(nc->name, id)) {
|
478 |
|
return nc;
|
479 |
|
}
|
480 |
|
}
|
481 |
|
|
482 |
|
return NULL;
|
483 |
|
}
|
484 |
|
|
485 |
|
static int nic_get_free_idx(void)
|
486 |
|
{
|
487 |
|
int index;
|
488 |
|
|
489 |
|
for (index = 0; index < MAX_NICS; index++)
|
490 |
|
if (!nd_table[index].used)
|
491 |
|
return index;
|
492 |
|
return -1;
|
493 |
|
}
|
494 |
|
|
495 |
|
int qemu_show_nic_models(const char *arg, const char *const *models)
|
496 |
|
{
|
497 |
|
int i;
|
498 |
|
|
499 |
|
if (!arg || !is_help_option(arg)) {
|
500 |
|
return 0;
|
501 |
|
}
|
502 |
|
|
503 |
|
fprintf(stderr, "qemu: Supported NIC models: ");
|
504 |
|
for (i = 0 ; models[i]; i++)
|
505 |
|
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
|
506 |
|
return 1;
|
507 |
|
}
|
508 |
|
|
509 |
|
void qemu_check_nic_model(NICInfo *nd, const char *model)
|
510 |
|
{
|
511 |
|
const char *models[2];
|
512 |
|
|
513 |
|
models[0] = model;
|
514 |
|
models[1] = NULL;
|
515 |
|
|
516 |
|
if (qemu_show_nic_models(nd->model, models))
|
517 |
|
exit(0);
|
518 |
|
if (qemu_find_nic_model(nd, models, model) < 0)
|
519 |
|
exit(1);
|
520 |
|
}
|
521 |
|
|
522 |
|
int qemu_find_nic_model(NICInfo *nd, const char * const *models,
|
523 |
|
const char *default_model)
|
524 |
|
{
|
525 |
|
int i;
|
526 |
|
|
527 |
|
if (!nd->model)
|
528 |
|
nd->model = g_strdup(default_model);
|
529 |
|
|
530 |
|
for (i = 0 ; models[i]; i++) {
|
531 |
|
if (strcmp(nd->model, models[i]) == 0)
|
532 |
|
return i;
|
533 |
|
}
|
534 |
|
|
535 |
|
error_report("Unsupported NIC model: %s", nd->model);
|
536 |
|
return -1;
|
537 |
|
}
|
538 |
|
|
539 |
|
static int net_init_nic(const NetClientOptions *opts, const char *name,
|
540 |
|
NetClientState *peer)
|
541 |
|
{
|
542 |
|
int idx;
|
543 |
|
NICInfo *nd;
|
544 |
|
const NetLegacyNicOptions *nic;
|
545 |
|
|
546 |
|
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
|
547 |
|
nic = opts->nic;
|
548 |
|
|
549 |
|
idx = nic_get_free_idx();
|
550 |
|
if (idx == -1 || nb_nics >= MAX_NICS) {
|
551 |
|
error_report("Too Many NICs");
|
552 |
|
return -1;
|
553 |
|
}
|
554 |
|
|
555 |
|
nd = &nd_table[idx];
|
556 |
|
|
557 |
|
memset(nd, 0, sizeof(*nd));
|
558 |
|
|
559 |
|
if (nic->has_netdev) {
|
560 |
|
nd->netdev = qemu_find_netdev(nic->netdev);
|
561 |
|
if (!nd->netdev) {
|
562 |
|
error_report("netdev '%s' not found", nic->netdev);
|
563 |
|
return -1;
|
564 |
|
}
|
565 |
|
} else {
|
566 |
|
assert(peer);
|
567 |
|
nd->netdev = peer;
|
568 |
|
}
|
569 |
|
if (name) {
|
570 |
|
nd->name = g_strdup(name);
|
571 |
|
}
|
572 |
|
if (nic->has_model) {
|
573 |
|
nd->model = g_strdup(nic->model);
|
574 |
|
}
|
575 |
|
if (nic->has_addr) {
|
576 |
|
nd->devaddr = g_strdup(nic->addr);
|
577 |
|
}
|
578 |
|
|
579 |
|
if (nic->has_macaddr &&
|
580 |
|
net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
|
581 |
|
error_report("invalid syntax for ethernet address");
|
582 |
|
return -1;
|
583 |
|
}
|
584 |
|
qemu_macaddr_default_if_unset(&nd->macaddr);
|
585 |
|
|
586 |
|
if (nic->has_vectors) {
|
587 |
|
if (nic->vectors > 0x7ffffff) {
|
588 |
|
error_report("invalid # of vectors: %"PRIu32, nic->vectors);
|
589 |
|
return -1;
|
590 |
|
}
|
591 |
|
nd->nvectors = nic->vectors;
|
592 |
|
} else {
|
593 |
|
nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
|
594 |
|
}
|
595 |
|
|
596 |
|
nd->used = 1;
|
597 |
|
nb_nics++;
|
598 |
|
|
599 |
|
return idx;
|
600 |
|
}
|
601 |
|
|
602 |
|
|
603 |
|
static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
|
604 |
|
const NetClientOptions *opts,
|
605 |
|
const char *name,
|
606 |
|
NetClientState *peer) = {
|
607 |
|
[NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
|
608 |
|
#ifdef CONFIG_SLIRP
|
609 |
|
[NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
|
610 |
|
#endif
|
611 |
|
[NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
|
612 |
|
[NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
|
613 |
|
#ifdef CONFIG_VDE
|
614 |
|
[NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
|
615 |
|
#endif
|
616 |
|
[NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
|
617 |
|
#ifdef CONFIG_NET_BRIDGE
|
618 |
|
[NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
|
619 |
|
#endif
|
620 |
|
[NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
|
621 |
|
};
|
622 |
|
|
623 |
|
|
624 |
|
static int net_client_init1(const void *object, int is_netdev, Error **errp)
|
625 |
|
{
|
626 |
|
union {
|
627 |
|
const Netdev *netdev;
|
628 |
|
const NetLegacy *net;
|
629 |
|
} u;
|
630 |
|
const NetClientOptions *opts;
|
631 |
|
const char *name;
|
632 |
|
|
633 |
|
if (is_netdev) {
|
634 |
|
u.netdev = object;
|
635 |
|
opts = u.netdev->opts;
|
636 |
|
name = u.netdev->id;
|
637 |
|
|
638 |
|
switch (opts->kind) {
|
639 |
|
#ifdef CONFIG_SLIRP
|
640 |
|
case NET_CLIENT_OPTIONS_KIND_USER:
|
641 |
|
#endif
|
642 |
|
case NET_CLIENT_OPTIONS_KIND_TAP:
|
643 |
|
case NET_CLIENT_OPTIONS_KIND_SOCKET:
|
644 |
|
#ifdef CONFIG_VDE
|
645 |
|
case NET_CLIENT_OPTIONS_KIND_VDE:
|
646 |
|
#endif
|
647 |
|
#ifdef CONFIG_NET_BRIDGE
|
648 |
|
case NET_CLIENT_OPTIONS_KIND_BRIDGE:
|
649 |
|
#endif
|
650 |
|
case NET_CLIENT_OPTIONS_KIND_HUBPORT:
|
651 |
|
break;
|
652 |
|
|
653 |
|
default:
|
654 |
|
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
|
655 |
|
"a netdev backend type");
|
656 |
|
return -1;
|
657 |
|
}
|
658 |
|
} else {
|
659 |
|
u.net = object;
|
660 |
|
opts = u.net->opts;
|
661 |
|
/* missing optional values have been initialized to "all bits zero" */
|
662 |
|
name = u.net->has_id ? u.net->id : u.net->name;
|
663 |
|
}
|
664 |
|
|
665 |
|
if (net_client_init_fun[opts->kind]) {
|
666 |
|
NetClientState *peer = NULL;
|
667 |
|
|
668 |
|
/* Do not add to a vlan if it's a -netdev or a nic with a netdev=
|
669 |
|
* parameter. */
|
670 |
|
if (!is_netdev &&
|
671 |
|
(opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
|
672 |
|
!opts->nic->has_netdev)) {
|
673 |
|
peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
|
674 |
|
}
|
675 |
|
|
676 |
|
if (net_client_init_fun[opts->kind](opts, name, peer) < 0) {
|
677 |
|
/* TODO push error reporting into init() methods */
|
678 |
|
error_set(errp, QERR_DEVICE_INIT_FAILED,
|
679 |
|
NetClientOptionsKind_lookup[opts->kind]);
|
680 |
|
return -1;
|
681 |
|
}
|
682 |
|
}
|
683 |
|
return 0;
|
684 |
|
}
|
685 |
|
|
686 |
|
|
687 |
|
static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
|
688 |
|
{
|
689 |
|
if (is_netdev) {
|
690 |
|
visit_type_Netdev(v, (Netdev **)object, NULL, errp);
|
691 |
|
} else {
|
692 |
|
visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
|
693 |
|
}
|
694 |
|
}
|
695 |
|
|
696 |
|
|
697 |
|
int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
|
698 |
|
{
|
699 |
|
void *object = NULL;
|
700 |
|
Error *err = NULL;
|
701 |
|
int ret = -1;
|
702 |
|
|
703 |
|
{
|
704 |
|
OptsVisitor *ov = opts_visitor_new(opts);
|
705 |
|
|
706 |
|
net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
|
707 |
|
opts_visitor_cleanup(ov);
|
708 |
|
}
|
709 |
|
|
710 |
|
if (!err) {
|
711 |
|
ret = net_client_init1(object, is_netdev, &err);
|
712 |
|
}
|
713 |
|
|
714 |
|
if (object) {
|
715 |
|
QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
|
716 |
|
|
717 |
|
net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
|
718 |
|
qapi_dealloc_visitor_cleanup(dv);
|
719 |
|
}
|
720 |
|
|
721 |
|
error_propagate(errp, err);
|
722 |
|
return ret;
|
723 |
|
}
|
724 |
|
|
725 |
|
|
726 |
|
static int net_host_check_device(const char *device)
|
727 |
|
{
|
728 |
|
int i;
|
729 |
|
const char *valid_param_list[] = { "tap", "socket", "dump"
|
730 |
|
#ifdef CONFIG_NET_BRIDGE
|
731 |
|
, "bridge"
|
732 |
|
#endif
|
733 |
|
#ifdef CONFIG_SLIRP
|
734 |
|
,"user"
|
735 |
|
#endif
|
736 |
|
#ifdef CONFIG_VDE
|
737 |
|
,"vde"
|
738 |
|
#endif
|
739 |
|
};
|
740 |
|
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
|
741 |
|
if (!strncmp(valid_param_list[i], device,
|
742 |
|
strlen(valid_param_list[i])))
|
743 |
|
return 1;
|
744 |
|
}
|
745 |
|
|
746 |
|
return 0;
|
747 |
|
}
|
748 |
|
|
749 |
|
void net_host_device_add(Monitor *mon, const QDict *qdict)
|
750 |
|
{
|
751 |
|
const char *device = qdict_get_str(qdict, "device");
|
752 |
|
const char *opts_str = qdict_get_try_str(qdict, "opts");
|
753 |
|
Error *local_err = NULL;
|
754 |
|
QemuOpts *opts;
|
755 |
|
|
756 |
|
if (!net_host_check_device(device)) {
|
757 |
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
758 |
|
return;
|
759 |
|
}
|
760 |
|
|
761 |
|
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
|
762 |
|
if (!opts) {
|
763 |
|
return;
|
764 |
|
}
|
765 |
|
|
766 |
|
qemu_opt_set(opts, "type", device);
|
767 |
|
|
768 |
|
net_client_init(opts, 0, &local_err);
|
769 |
|
if (error_is_set(&local_err)) {
|
770 |
|
qerror_report_err(local_err);
|
771 |
|
error_free(local_err);
|
772 |
|
monitor_printf(mon, "adding host network device %s failed\n", device);
|
773 |
|
}
|
774 |
|
}
|
775 |
|
|
776 |
|
void net_host_device_remove(Monitor *mon, const QDict *qdict)
|
777 |
|
{
|
778 |
|
NetClientState *nc;
|
779 |
|
int vlan_id = qdict_get_int(qdict, "vlan_id");
|
780 |
|
const char *device = qdict_get_str(qdict, "device");
|
781 |
|
|
782 |
|
nc = net_hub_find_client_by_name(vlan_id, device);
|
783 |
|
if (!nc) {
|
784 |
|
return;
|
785 |
|
}
|
786 |
|
if (!net_host_check_device(nc->model)) {
|
787 |
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
788 |
|
return;
|
789 |
|
}
|
790 |
|
qemu_del_net_client(nc);
|
791 |
|
}
|
792 |
|
|
793 |
|
void netdev_add(QemuOpts *opts, Error **errp)
|
794 |
|
{
|
795 |
|
net_client_init(opts, 1, errp);
|
796 |
|
}
|
797 |
|
|
798 |
|
int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret)
|
799 |
|
{
|
800 |
|
Error *local_err = NULL;
|
801 |
|
QemuOptsList *opts_list;
|
802 |
|
QemuOpts *opts;
|
803 |
|
|
804 |
|
opts_list = qemu_find_opts_err("netdev", &local_err);
|
805 |
|
if (error_is_set(&local_err)) {
|
806 |
|
goto exit_err;
|
807 |
|
}
|
808 |
|
|
809 |
|
opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
|
810 |
|
if (error_is_set(&local_err)) {
|
811 |
|
goto exit_err;
|
812 |
|
}
|
813 |
|
|
814 |
|
netdev_add(opts, &local_err);
|
815 |
|
if (error_is_set(&local_err)) {
|
816 |
|
qemu_opts_del(opts);
|
817 |
|
goto exit_err;
|
818 |
|
}
|
819 |
|
|
820 |
|
return 0;
|
821 |
|
|
822 |
|
exit_err:
|
823 |
|
qerror_report_err(local_err);
|
824 |
|
error_free(local_err);
|
825 |
|
return -1;
|
826 |
|
}
|
827 |
|
|
828 |
|
void qmp_netdev_del(const char *id, Error **errp)
|
829 |
|
{
|
830 |
|
NetClientState *nc;
|
831 |
|
QemuOpts *opts;
|
832 |
|
|
833 |
|
nc = qemu_find_netdev(id);
|
834 |
|
if (!nc) {
|
835 |
|
error_set(errp, QERR_DEVICE_NOT_FOUND, id);
|
836 |
|
return;
|
837 |
|
}
|
838 |
|
|
839 |
|
opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
|
840 |
|
if (!opts) {
|
841 |
|
error_setg(errp, "Device '%s' is not a netdev", id);
|
842 |
|
return;
|
843 |
|
}
|
844 |
|
|
845 |
|
qemu_del_net_client(nc);
|
846 |
|
qemu_opts_del(opts);
|
847 |
|
}
|
848 |
|
|
849 |
|
void print_net_client(Monitor *mon, NetClientState *nc)
|
850 |
|
{
|
851 |
|
monitor_printf(mon, "%s: type=%s,%s\n", nc->name,
|
852 |
|
NetClientOptionsKind_lookup[nc->info->type], nc->info_str);
|
853 |
|
}
|
854 |
|
|
855 |
|
void do_info_network(Monitor *mon)
|
856 |
|
{
|
857 |
|
NetClientState *nc, *peer;
|
858 |
|
NetClientOptionsKind type;
|
859 |
|
|
860 |
|
net_hub_info(mon);
|
861 |
|
|
862 |
|
QTAILQ_FOREACH(nc, &net_clients, next) {
|
863 |
|
peer = nc->peer;
|
864 |
|
type = nc->info->type;
|
865 |
|
|
866 |
|
/* Skip if already printed in hub info */
|
867 |
|
if (net_hub_id_for_client(nc, NULL) == 0) {
|
868 |
|
continue;
|
869 |
|
}
|
870 |
|
|
871 |
|
if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
|
872 |
|
print_net_client(mon, nc);
|
873 |
|
} /* else it's a netdev connected to a NIC, printed with the NIC */
|
874 |
|
if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
|
875 |
|
monitor_printf(mon, " \\ ");
|
876 |
|
print_net_client(mon, peer);
|
877 |
|
}
|
878 |
|
}
|
879 |
|
}
|
880 |
|
|
881 |
|
void qmp_set_link(const char *name, bool up, Error **errp)
|
882 |
|
{
|
883 |
|
NetClientState *nc = NULL;
|
884 |
|
|
885 |
|
QTAILQ_FOREACH(nc, &net_clients, next) {
|
886 |
|
if (!strcmp(nc->name, name)) {
|
887 |
|
goto done;
|
888 |
|
}
|
889 |
|
}
|
890 |
|
done:
|
891 |
|
if (!nc) {
|
892 |
|
error_set(errp, QERR_DEVICE_NOT_FOUND, name);
|
893 |
|
return;
|
894 |
|
}
|
895 |
|
|
896 |
|
nc->link_down = !up;
|
897 |
|
|
898 |
|
if (nc->info->link_status_changed) {
|
899 |
|
nc->info->link_status_changed(nc);
|
900 |
|
}
|
901 |
|
|
902 |
|
/* Notify peer. Don't update peer link status: this makes it possible to
|
903 |
|
* disconnect from host network without notifying the guest.
|
904 |
|
* FIXME: is disconnected link status change operation useful?
|
905 |
|
*
|
906 |
|
* Current behaviour is compatible with qemu vlans where there could be
|
907 |
|
* multiple clients that can still communicate with each other in
|
908 |
|
* disconnected mode. For now maintain this compatibility. */
|
909 |
|
if (nc->peer && nc->peer->info->link_status_changed) {
|
910 |
|
nc->peer->info->link_status_changed(nc->peer);
|
911 |
|
}
|
912 |
|
}
|
913 |
|
|
914 |
|
void net_cleanup(void)
|
915 |
|
{
|
916 |
|
NetClientState *nc, *next_vc;
|
917 |
|
|
918 |
|
QTAILQ_FOREACH_SAFE(nc, &net_clients, next, next_vc) {
|
919 |
|
qemu_del_net_client(nc);
|
920 |
|
}
|
921 |
|
}
|
922 |
|
|
923 |
|
void net_check_clients(void)
|
924 |
|
{
|
925 |
|
NetClientState *nc;
|
926 |
|
int i;
|
927 |
|
|
928 |
|
/* Don't warn about the default network setup that you get if
|
929 |
|
* no command line -net or -netdev options are specified. There
|
930 |
|
* are two cases that we would otherwise complain about:
|
931 |
|
* (1) board doesn't support a NIC but the implicit "-net nic"
|
932 |
|
* requested one
|
933 |
|
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
|
934 |
|
* sets up a nic that isn't connected to anything.
|
935 |
|
*/
|
936 |
|
if (default_net) {
|
937 |
|
return;
|
938 |
|
}
|
939 |
|
|
940 |
|
net_hub_check_clients();
|
941 |
|
|
942 |
|
QTAILQ_FOREACH(nc, &net_clients, next) {
|
943 |
|
if (!nc->peer) {
|
944 |
|
fprintf(stderr, "Warning: %s %s has no peer\n",
|
945 |
|
nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
|
946 |
|
"nic" : "netdev", nc->name);
|
947 |
|
}
|
948 |
|
}
|
949 |
|
|
950 |
|
/* Check that all NICs requested via -net nic actually got created.
|
951 |
|
* NICs created via -device don't need to be checked here because
|
952 |
|
* they are always instantiated.
|
953 |
|
*/
|
954 |
|
for (i = 0; i < MAX_NICS; i++) {
|
955 |
|
NICInfo *nd = &nd_table[i];
|
956 |
|
if (nd->used && !nd->instantiated) {
|
957 |
|
fprintf(stderr, "Warning: requested NIC (%s, model %s) "
|
958 |
|
"was not created (not supported by this machine?)\n",
|
959 |
|
nd->name ? nd->name : "anonymous",
|
960 |
|
nd->model ? nd->model : "unspecified");
|
961 |
|
}
|
962 |
|
}
|
963 |
|
}
|
964 |
|
|
965 |
|
static int net_init_client(QemuOpts *opts, void *dummy)
|
966 |
|
{
|
967 |
|
Error *local_err = NULL;
|
968 |
|
|
969 |
|
net_client_init(opts, 0, &local_err);
|
970 |
|
if (error_is_set(&local_err)) {
|
971 |
|
qerror_report_err(local_err);
|
972 |
|
error_free(local_err);
|
973 |
|
return -1;
|
974 |
|
}
|
975 |
|
|
976 |
|
return 0;
|
977 |
|
}
|
978 |
|
|
979 |
|
static int net_init_netdev(QemuOpts *opts, void *dummy)
|
980 |
|
{
|
981 |
|
Error *local_err = NULL;
|
982 |
|
int ret;
|
983 |
|
|
984 |
|
ret = net_client_init(opts, 1, &local_err);
|
985 |
|
if (error_is_set(&local_err)) {
|
986 |
|
qerror_report_err(local_err);
|
987 |
|
error_free(local_err);
|
988 |
|
return -1;
|
989 |
|
}
|
990 |
|
|
991 |
|
return ret;
|
992 |
|
}
|
993 |
|
|
994 |
|
int net_init_clients(void)
|
995 |
|
{
|
996 |
|
QemuOptsList *net = qemu_find_opts("net");
|
997 |
|
|
998 |
|
if (default_net) {
|
999 |
|
/* if no clients, we use a default config */
|
1000 |
|
qemu_opts_set(net, NULL, "type", "nic");
|
1001 |
|
#ifdef CONFIG_SLIRP
|
1002 |
|
qemu_opts_set(net, NULL, "type", "user");
|
1003 |
|
#endif
|
1004 |
|
}
|
1005 |
|
|
1006 |
|
QTAILQ_INIT(&net_clients);
|
1007 |
|
|
1008 |
|
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
|
1009 |
|
return -1;
|
1010 |
|
|
1011 |
|
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
|
1012 |
|
return -1;
|
1013 |
|
}
|
1014 |
|
|
1015 |
|
return 0;
|
1016 |
|
}
|
1017 |
|
|
1018 |
|
int net_client_parse(QemuOptsList *opts_list, const char *optarg)
|
1019 |
|
{
|
1020 |
|
#if defined(CONFIG_SLIRP)
|
1021 |
|
int ret;
|
1022 |
|
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
1023 |
|
return ret;
|
1024 |
|
}
|
1025 |
|
#endif
|
1026 |
|
|
1027 |
|
if (!qemu_opts_parse(opts_list, optarg, 1)) {
|
1028 |
|
return -1;
|
1029 |
|
}
|
1030 |
|
|
1031 |
|
default_net = 0;
|
1032 |
|
return 0;
|
1033 |
|
}
|
1034 |
|
|
1035 |
|
/* From FreeBSD */
|
1036 |
|
/* XXX: optimize */
|
1037 |
|
unsigned compute_mcast_idx(const uint8_t *ep)
|
1038 |
|
{
|
1039 |
|
uint32_t crc;
|
1040 |
|
int carry, i, j;
|
1041 |
|
uint8_t b;
|
1042 |
|
|
1043 |
|
crc = 0xffffffff;
|
1044 |
|
for (i = 0; i < 6; i++) {
|
1045 |
|
b = *ep++;
|
1046 |
|
for (j = 0; j < 8; j++) {
|
1047 |
|
carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
|
1048 |
|
crc <<= 1;
|
1049 |
|
b >>= 1;
|
1050 |
|
if (carry) {
|
1051 |
|
crc = ((crc ^ POLYNOMIAL) | carry);
|
1052 |
|
}
|
1053 |
|
}
|
1054 |
|
}
|
1055 |
|
return crc >> 26;
|
1056 |
|
}
|