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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 "net.h" |
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#include "config-host.h" |
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#include "net/tap.h" |
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#include "net/socket.h" |
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#include "net/dump.h" |
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#include "net/slirp.h" |
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#include "net/vde.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 "hw/qdev.h" |
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#include "iov.h" |
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static QTAILQ_HEAD(, VLANState) vlans;
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static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
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int default_net = 1; |
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/***********************************************************/
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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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|
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for(i=0;i<size;i+=16) { |
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len = size - i; |
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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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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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} |
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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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} |
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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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if (buf[0] == '\0') { |
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saddr->sin_addr.s_addr = 0;
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} else {
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if (qemu_isdigit(buf[0])) { |
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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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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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|
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void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
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{ |
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snprintf(vc->info_str, sizeof(vc->info_str),
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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vc->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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static char *assign_name(VLANClientState *vc1, const char *model) |
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{ |
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VLANState *vlan; |
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VLANClientState *vc; |
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char buf[256]; |
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int id = 0; |
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QTAILQ_FOREACH(vlan, &vlans, next) { |
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QTAILQ_FOREACH(vc, &vlan->clients, next) { |
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if (vc != vc1 && strcmp(vc->model, model) == 0) { |
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id++; |
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} |
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} |
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} |
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QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
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if (vc != vc1 && strcmp(vc->model, model) == 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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static ssize_t qemu_deliver_packet(VLANClientState *sender,
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unsigned flags,
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const uint8_t *data,
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size_t size, |
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void *opaque);
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static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
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unsigned flags,
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const struct iovec *iov, |
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int iovcnt,
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void *opaque);
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VLANClientState *qemu_new_net_client(NetClientInfo *info, |
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VLANState *vlan, |
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VLANClientState *peer, |
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const char *model, |
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const char *name) |
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{ |
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VLANClientState *vc; |
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assert(info->size >= sizeof(VLANClientState));
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vc = g_malloc0(info->size); |
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vc->info = info; |
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vc->model = g_strdup(model); |
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if (name) {
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vc->name = g_strdup(name); |
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} else {
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vc->name = assign_name(vc, model); |
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} |
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if (vlan) {
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assert(!peer); |
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vc->vlan = vlan; |
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QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
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} else {
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if (peer) {
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assert(!peer->peer); |
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vc->peer = peer; |
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peer->peer = vc; |
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} |
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QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
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vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
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qemu_deliver_packet_iov, |
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vc); |
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} |
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return vc;
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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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VLANClientState *nc; |
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NICState *nic; |
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assert(info->type == NET_CLIENT_TYPE_NIC); |
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assert(info->size >= sizeof(NICState));
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nc = qemu_new_net_client(info, conf->vlan, 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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nic->opaque = opaque; |
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return nic;
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} |
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static void qemu_cleanup_vlan_client(VLANClientState *vc) |
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{ |
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if (vc->vlan) {
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QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
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} else {
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QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
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} |
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if (vc->info->cleanup) {
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vc->info->cleanup(vc); |
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} |
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} |
260 |
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static void qemu_free_vlan_client(VLANClientState *vc) |
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{ |
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if (!vc->vlan) {
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if (vc->send_queue) {
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qemu_del_net_queue(vc->send_queue); |
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} |
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if (vc->peer) {
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vc->peer->peer = NULL;
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} |
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} |
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g_free(vc->name); |
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g_free(vc->model); |
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g_free(vc); |
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} |
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void qemu_del_vlan_client(VLANClientState *vc)
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{ |
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/* If there is a peer NIC, delete and cleanup client, but do not free. */
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if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
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NICState *nic = DO_UPCAST(NICState, nc, vc->peer); |
281 |
if (nic->peer_deleted) {
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return;
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} |
284 |
nic->peer_deleted = true;
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/* Let NIC know peer is gone. */
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vc->peer->link_down = true;
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if (vc->peer->info->link_status_changed) {
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vc->peer->info->link_status_changed(vc->peer); |
289 |
} |
290 |
qemu_cleanup_vlan_client(vc); |
291 |
return;
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} |
293 |
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/* If this is a peer NIC and peer has already been deleted, free it now. */
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if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
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NICState *nic = DO_UPCAST(NICState, nc, vc); |
297 |
if (nic->peer_deleted) {
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qemu_free_vlan_client(vc->peer); |
299 |
} |
300 |
} |
301 |
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qemu_cleanup_vlan_client(vc); |
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qemu_free_vlan_client(vc); |
304 |
} |
305 |
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VLANClientState * |
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qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
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const char *client_str) |
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{ |
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VLANState *vlan; |
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VLANClientState *vc; |
312 |
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vlan = qemu_find_vlan(vlan_id, 0);
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if (!vlan) {
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monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
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return NULL; |
317 |
} |
318 |
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QTAILQ_FOREACH(vc, &vlan->clients, next) { |
320 |
if (!strcmp(vc->name, client_str)) {
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break;
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} |
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} |
324 |
if (!vc) {
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monitor_printf(mon, "can't find device %s on VLAN %d\n",
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client_str, vlan_id); |
327 |
} |
328 |
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return vc;
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} |
331 |
|
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void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
333 |
{ |
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VLANClientState *nc; |
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VLANState *vlan; |
336 |
|
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QTAILQ_FOREACH(nc, &non_vlan_clients, next) { |
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if (nc->info->type == NET_CLIENT_TYPE_NIC) {
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func(DO_UPCAST(NICState, nc, nc), opaque); |
340 |
} |
341 |
} |
342 |
|
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QTAILQ_FOREACH(vlan, &vlans, next) { |
344 |
QTAILQ_FOREACH(nc, &vlan->clients, next) { |
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if (nc->info->type == NET_CLIENT_TYPE_NIC) {
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func(DO_UPCAST(NICState, nc, nc), opaque); |
347 |
} |
348 |
} |
349 |
} |
350 |
} |
351 |
|
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int qemu_can_send_packet(VLANClientState *sender)
|
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{ |
354 |
VLANState *vlan = sender->vlan; |
355 |
VLANClientState *vc; |
356 |
|
357 |
if (sender->peer) {
|
358 |
if (sender->peer->receive_disabled) {
|
359 |
return 0; |
360 |
} else if (sender->peer->info->can_receive && |
361 |
!sender->peer->info->can_receive(sender->peer)) { |
362 |
return 0; |
363 |
} else {
|
364 |
return 1; |
365 |
} |
366 |
} |
367 |
|
368 |
if (!sender->vlan) {
|
369 |
return 1; |
370 |
} |
371 |
|
372 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
373 |
if (vc == sender) {
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374 |
continue;
|
375 |
} |
376 |
|
377 |
/* no can_receive() handler, they can always receive */
|
378 |
if (vc->info->can_receive && !vc->info->can_receive(vc)) {
|
379 |
return 0; |
380 |
} |
381 |
} |
382 |
return 1; |
383 |
} |
384 |
|
385 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
386 |
unsigned flags,
|
387 |
const uint8_t *data,
|
388 |
size_t size, |
389 |
void *opaque)
|
390 |
{ |
391 |
VLANClientState *vc = opaque; |
392 |
ssize_t ret; |
393 |
|
394 |
if (vc->link_down) {
|
395 |
return size;
|
396 |
} |
397 |
|
398 |
if (vc->receive_disabled) {
|
399 |
return 0; |
400 |
} |
401 |
|
402 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
403 |
ret = vc->info->receive_raw(vc, data, size); |
404 |
} else {
|
405 |
ret = vc->info->receive(vc, data, size); |
406 |
} |
407 |
|
408 |
if (ret == 0) { |
409 |
vc->receive_disabled = 1;
|
410 |
}; |
411 |
|
412 |
return ret;
|
413 |
} |
414 |
|
415 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
416 |
unsigned flags,
|
417 |
const uint8_t *buf,
|
418 |
size_t size, |
419 |
void *opaque)
|
420 |
{ |
421 |
VLANState *vlan = opaque; |
422 |
VLANClientState *vc; |
423 |
ssize_t ret = -1;
|
424 |
|
425 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
426 |
ssize_t len; |
427 |
|
428 |
if (vc == sender) {
|
429 |
continue;
|
430 |
} |
431 |
|
432 |
if (vc->link_down) {
|
433 |
ret = size; |
434 |
continue;
|
435 |
} |
436 |
|
437 |
if (vc->receive_disabled) {
|
438 |
ret = 0;
|
439 |
continue;
|
440 |
} |
441 |
|
442 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
443 |
len = vc->info->receive_raw(vc, buf, size); |
444 |
} else {
|
445 |
len = vc->info->receive(vc, buf, size); |
446 |
} |
447 |
|
448 |
if (len == 0) { |
449 |
vc->receive_disabled = 1;
|
450 |
} |
451 |
|
452 |
ret = (ret >= 0) ? ret : len;
|
453 |
|
454 |
} |
455 |
|
456 |
return ret;
|
457 |
} |
458 |
|
459 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
460 |
{ |
461 |
NetQueue *queue; |
462 |
|
463 |
if (!vc->peer && !vc->vlan) {
|
464 |
return;
|
465 |
} |
466 |
|
467 |
if (vc->peer) {
|
468 |
queue = vc->peer->send_queue; |
469 |
} else {
|
470 |
queue = vc->vlan->send_queue; |
471 |
} |
472 |
|
473 |
qemu_net_queue_purge(queue, vc); |
474 |
} |
475 |
|
476 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
477 |
{ |
478 |
NetQueue *queue; |
479 |
|
480 |
vc->receive_disabled = 0;
|
481 |
|
482 |
if (vc->vlan) {
|
483 |
queue = vc->vlan->send_queue; |
484 |
} else {
|
485 |
queue = vc->send_queue; |
486 |
} |
487 |
|
488 |
qemu_net_queue_flush(queue); |
489 |
} |
490 |
|
491 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
492 |
unsigned flags,
|
493 |
const uint8_t *buf, int size, |
494 |
NetPacketSent *sent_cb) |
495 |
{ |
496 |
NetQueue *queue; |
497 |
|
498 |
#ifdef DEBUG_NET
|
499 |
printf("qemu_send_packet_async:\n");
|
500 |
hex_dump(stdout, buf, size); |
501 |
#endif
|
502 |
|
503 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
504 |
return size;
|
505 |
} |
506 |
|
507 |
if (sender->peer) {
|
508 |
queue = sender->peer->send_queue; |
509 |
} else {
|
510 |
queue = sender->vlan->send_queue; |
511 |
} |
512 |
|
513 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
514 |
} |
515 |
|
516 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
517 |
const uint8_t *buf, int size, |
518 |
NetPacketSent *sent_cb) |
519 |
{ |
520 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
521 |
buf, size, sent_cb); |
522 |
} |
523 |
|
524 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
525 |
{ |
526 |
qemu_send_packet_async(vc, buf, size, NULL);
|
527 |
} |
528 |
|
529 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
530 |
{ |
531 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
532 |
buf, size, NULL);
|
533 |
} |
534 |
|
535 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
536 |
int iovcnt)
|
537 |
{ |
538 |
uint8_t buffer[4096];
|
539 |
size_t offset; |
540 |
|
541 |
offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer)); |
542 |
|
543 |
return vc->info->receive(vc, buffer, offset);
|
544 |
} |
545 |
|
546 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
547 |
unsigned flags,
|
548 |
const struct iovec *iov, |
549 |
int iovcnt,
|
550 |
void *opaque)
|
551 |
{ |
552 |
VLANClientState *vc = opaque; |
553 |
|
554 |
if (vc->link_down) {
|
555 |
return iov_size(iov, iovcnt);
|
556 |
} |
557 |
|
558 |
if (vc->info->receive_iov) {
|
559 |
return vc->info->receive_iov(vc, iov, iovcnt);
|
560 |
} else {
|
561 |
return vc_sendv_compat(vc, iov, iovcnt);
|
562 |
} |
563 |
} |
564 |
|
565 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
566 |
unsigned flags,
|
567 |
const struct iovec *iov, |
568 |
int iovcnt,
|
569 |
void *opaque)
|
570 |
{ |
571 |
VLANState *vlan = opaque; |
572 |
VLANClientState *vc; |
573 |
ssize_t ret = -1;
|
574 |
|
575 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
576 |
ssize_t len; |
577 |
|
578 |
if (vc == sender) {
|
579 |
continue;
|
580 |
} |
581 |
|
582 |
if (vc->link_down) {
|
583 |
ret = iov_size(iov, iovcnt); |
584 |
continue;
|
585 |
} |
586 |
|
587 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
588 |
|
589 |
if (vc->info->receive_iov) {
|
590 |
len = vc->info->receive_iov(vc, iov, iovcnt); |
591 |
} else {
|
592 |
len = vc_sendv_compat(vc, iov, iovcnt); |
593 |
} |
594 |
|
595 |
ret = (ret >= 0) ? ret : len;
|
596 |
} |
597 |
|
598 |
return ret;
|
599 |
} |
600 |
|
601 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
602 |
const struct iovec *iov, int iovcnt, |
603 |
NetPacketSent *sent_cb) |
604 |
{ |
605 |
NetQueue *queue; |
606 |
|
607 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
608 |
return iov_size(iov, iovcnt);
|
609 |
} |
610 |
|
611 |
if (sender->peer) {
|
612 |
queue = sender->peer->send_queue; |
613 |
} else {
|
614 |
queue = sender->vlan->send_queue; |
615 |
} |
616 |
|
617 |
return qemu_net_queue_send_iov(queue, sender,
|
618 |
QEMU_NET_PACKET_FLAG_NONE, |
619 |
iov, iovcnt, sent_cb); |
620 |
} |
621 |
|
622 |
ssize_t |
623 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
624 |
{ |
625 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
626 |
} |
627 |
|
628 |
/* find or alloc a new VLAN */
|
629 |
VLANState *qemu_find_vlan(int id, int allocate) |
630 |
{ |
631 |
VLANState *vlan; |
632 |
|
633 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
634 |
if (vlan->id == id) {
|
635 |
return vlan;
|
636 |
} |
637 |
} |
638 |
|
639 |
if (!allocate) {
|
640 |
return NULL; |
641 |
} |
642 |
|
643 |
vlan = g_malloc0(sizeof(VLANState));
|
644 |
vlan->id = id; |
645 |
QTAILQ_INIT(&vlan->clients); |
646 |
|
647 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
648 |
qemu_vlan_deliver_packet_iov, |
649 |
vlan); |
650 |
|
651 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
652 |
|
653 |
return vlan;
|
654 |
} |
655 |
|
656 |
VLANClientState *qemu_find_netdev(const char *id) |
657 |
{ |
658 |
VLANClientState *vc; |
659 |
|
660 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
661 |
if (vc->info->type == NET_CLIENT_TYPE_NIC)
|
662 |
continue;
|
663 |
if (!strcmp(vc->name, id)) {
|
664 |
return vc;
|
665 |
} |
666 |
} |
667 |
|
668 |
return NULL; |
669 |
} |
670 |
|
671 |
static int nic_get_free_idx(void) |
672 |
{ |
673 |
int index;
|
674 |
|
675 |
for (index = 0; index < MAX_NICS; index++) |
676 |
if (!nd_table[index].used)
|
677 |
return index;
|
678 |
return -1; |
679 |
} |
680 |
|
681 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
682 |
{ |
683 |
int i;
|
684 |
|
685 |
if (!arg || strcmp(arg, "?")) |
686 |
return 0; |
687 |
|
688 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
689 |
for (i = 0 ; models[i]; i++) |
690 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
691 |
return 1; |
692 |
} |
693 |
|
694 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
695 |
{ |
696 |
const char *models[2]; |
697 |
|
698 |
models[0] = model;
|
699 |
models[1] = NULL; |
700 |
|
701 |
if (qemu_show_nic_models(nd->model, models))
|
702 |
exit(0);
|
703 |
if (qemu_find_nic_model(nd, models, model) < 0) |
704 |
exit(1);
|
705 |
} |
706 |
|
707 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
708 |
const char *default_model) |
709 |
{ |
710 |
int i;
|
711 |
|
712 |
if (!nd->model)
|
713 |
nd->model = g_strdup(default_model); |
714 |
|
715 |
for (i = 0 ; models[i]; i++) { |
716 |
if (strcmp(nd->model, models[i]) == 0) |
717 |
return i;
|
718 |
} |
719 |
|
720 |
error_report("Unsupported NIC model: %s", nd->model);
|
721 |
return -1; |
722 |
} |
723 |
|
724 |
int net_handle_fd_param(Monitor *mon, const char *param) |
725 |
{ |
726 |
int fd;
|
727 |
|
728 |
if (!qemu_isdigit(param[0]) && mon) { |
729 |
|
730 |
fd = monitor_get_fd(mon, param); |
731 |
if (fd == -1) { |
732 |
error_report("No file descriptor named %s found", param);
|
733 |
return -1; |
734 |
} |
735 |
} else {
|
736 |
char *endptr = NULL; |
737 |
|
738 |
fd = strtol(param, &endptr, 10);
|
739 |
if (*endptr || (fd == 0 && param == endptr)) { |
740 |
return -1; |
741 |
} |
742 |
} |
743 |
|
744 |
return fd;
|
745 |
} |
746 |
|
747 |
static int net_init_nic(QemuOpts *opts, |
748 |
Monitor *mon, |
749 |
const char *name, |
750 |
VLANState *vlan) |
751 |
{ |
752 |
int idx;
|
753 |
NICInfo *nd; |
754 |
const char *netdev; |
755 |
|
756 |
idx = nic_get_free_idx(); |
757 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
758 |
error_report("Too Many NICs");
|
759 |
return -1; |
760 |
} |
761 |
|
762 |
nd = &nd_table[idx]; |
763 |
|
764 |
memset(nd, 0, sizeof(*nd)); |
765 |
|
766 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
767 |
nd->netdev = qemu_find_netdev(netdev); |
768 |
if (!nd->netdev) {
|
769 |
error_report("netdev '%s' not found", netdev);
|
770 |
return -1; |
771 |
} |
772 |
} else {
|
773 |
assert(vlan); |
774 |
nd->vlan = vlan; |
775 |
} |
776 |
if (name) {
|
777 |
nd->name = g_strdup(name); |
778 |
} |
779 |
if (qemu_opt_get(opts, "model")) { |
780 |
nd->model = g_strdup(qemu_opt_get(opts, "model"));
|
781 |
} |
782 |
if (qemu_opt_get(opts, "addr")) { |
783 |
nd->devaddr = g_strdup(qemu_opt_get(opts, "addr"));
|
784 |
} |
785 |
|
786 |
if (qemu_opt_get(opts, "macaddr") && |
787 |
net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) { |
788 |
error_report("invalid syntax for ethernet address");
|
789 |
return -1; |
790 |
} |
791 |
qemu_macaddr_default_if_unset(&nd->macaddr); |
792 |
|
793 |
nd->nvectors = qemu_opt_get_number(opts, "vectors",
|
794 |
DEV_NVECTORS_UNSPECIFIED); |
795 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
796 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
797 |
error_report("invalid # of vectors: %d", nd->nvectors);
|
798 |
return -1; |
799 |
} |
800 |
|
801 |
nd->used = 1;
|
802 |
nb_nics++; |
803 |
|
804 |
return idx;
|
805 |
} |
806 |
|
807 |
#define NET_COMMON_PARAMS_DESC \
|
808 |
{ \ |
809 |
.name = "type", \
|
810 |
.type = QEMU_OPT_STRING, \ |
811 |
.help = "net client type (nic, tap etc.)", \
|
812 |
}, { \ |
813 |
.name = "vlan", \
|
814 |
.type = QEMU_OPT_NUMBER, \ |
815 |
.help = "vlan number", \
|
816 |
}, { \ |
817 |
.name = "name", \
|
818 |
.type = QEMU_OPT_STRING, \ |
819 |
.help = "identifier for monitor commands", \
|
820 |
} |
821 |
|
822 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
823 |
Monitor *mon, |
824 |
const char *name, |
825 |
VLANState *vlan); |
826 |
|
827 |
/* magic number, but compiler will warn if too small */
|
828 |
#define NET_MAX_DESC 20 |
829 |
|
830 |
static const struct { |
831 |
const char *type; |
832 |
net_client_init_func init; |
833 |
QemuOptDesc desc[NET_MAX_DESC]; |
834 |
} net_client_types[NET_CLIENT_TYPE_MAX] = { |
835 |
[NET_CLIENT_TYPE_NONE] = { |
836 |
.type = "none",
|
837 |
.desc = { |
838 |
NET_COMMON_PARAMS_DESC, |
839 |
{ /* end of list */ }
|
840 |
}, |
841 |
}, |
842 |
[NET_CLIENT_TYPE_NIC] = { |
843 |
.type = "nic",
|
844 |
.init = net_init_nic, |
845 |
.desc = { |
846 |
NET_COMMON_PARAMS_DESC, |
847 |
{ |
848 |
.name = "netdev",
|
849 |
.type = QEMU_OPT_STRING, |
850 |
.help = "id of -netdev to connect to",
|
851 |
}, |
852 |
{ |
853 |
.name = "macaddr",
|
854 |
.type = QEMU_OPT_STRING, |
855 |
.help = "MAC address",
|
856 |
}, { |
857 |
.name = "model",
|
858 |
.type = QEMU_OPT_STRING, |
859 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
860 |
}, { |
861 |
.name = "addr",
|
862 |
.type = QEMU_OPT_STRING, |
863 |
.help = "PCI device address",
|
864 |
}, { |
865 |
.name = "vectors",
|
866 |
.type = QEMU_OPT_NUMBER, |
867 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
868 |
}, |
869 |
{ /* end of list */ }
|
870 |
}, |
871 |
}, |
872 |
#ifdef CONFIG_SLIRP
|
873 |
[NET_CLIENT_TYPE_USER] = { |
874 |
.type = "user",
|
875 |
.init = net_init_slirp, |
876 |
.desc = { |
877 |
NET_COMMON_PARAMS_DESC, |
878 |
{ |
879 |
.name = "hostname",
|
880 |
.type = QEMU_OPT_STRING, |
881 |
.help = "client hostname reported by the builtin DHCP server",
|
882 |
}, { |
883 |
.name = "restrict",
|
884 |
.type = QEMU_OPT_STRING, |
885 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
886 |
}, { |
887 |
.name = "ip",
|
888 |
.type = QEMU_OPT_STRING, |
889 |
.help = "legacy parameter, use net= instead",
|
890 |
}, { |
891 |
.name = "net",
|
892 |
.type = QEMU_OPT_STRING, |
893 |
.help = "IP address and optional netmask",
|
894 |
}, { |
895 |
.name = "host",
|
896 |
.type = QEMU_OPT_STRING, |
897 |
.help = "guest-visible address of the host",
|
898 |
}, { |
899 |
.name = "tftp",
|
900 |
.type = QEMU_OPT_STRING, |
901 |
.help = "root directory of the built-in TFTP server",
|
902 |
}, { |
903 |
.name = "bootfile",
|
904 |
.type = QEMU_OPT_STRING, |
905 |
.help = "BOOTP filename, for use with tftp=",
|
906 |
}, { |
907 |
.name = "dhcpstart",
|
908 |
.type = QEMU_OPT_STRING, |
909 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
910 |
}, { |
911 |
.name = "dns",
|
912 |
.type = QEMU_OPT_STRING, |
913 |
.help = "guest-visible address of the virtual nameserver",
|
914 |
}, { |
915 |
.name = "smb",
|
916 |
.type = QEMU_OPT_STRING, |
917 |
.help = "root directory of the built-in SMB server",
|
918 |
}, { |
919 |
.name = "smbserver",
|
920 |
.type = QEMU_OPT_STRING, |
921 |
.help = "IP address of the built-in SMB server",
|
922 |
}, { |
923 |
.name = "hostfwd",
|
924 |
.type = QEMU_OPT_STRING, |
925 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
926 |
}, { |
927 |
.name = "guestfwd",
|
928 |
.type = QEMU_OPT_STRING, |
929 |
.help = "IP address and port to forward guest TCP connections",
|
930 |
}, |
931 |
{ /* end of list */ }
|
932 |
}, |
933 |
}, |
934 |
#endif
|
935 |
[NET_CLIENT_TYPE_TAP] = { |
936 |
.type = "tap",
|
937 |
.init = net_init_tap, |
938 |
.desc = { |
939 |
NET_COMMON_PARAMS_DESC, |
940 |
{ |
941 |
.name = "ifname",
|
942 |
.type = QEMU_OPT_STRING, |
943 |
.help = "interface name",
|
944 |
}, |
945 |
#ifndef _WIN32
|
946 |
{ |
947 |
.name = "fd",
|
948 |
.type = QEMU_OPT_STRING, |
949 |
.help = "file descriptor of an already opened tap",
|
950 |
}, { |
951 |
.name = "script",
|
952 |
.type = QEMU_OPT_STRING, |
953 |
.help = "script to initialize the interface",
|
954 |
}, { |
955 |
.name = "downscript",
|
956 |
.type = QEMU_OPT_STRING, |
957 |
.help = "script to shut down the interface",
|
958 |
}, { |
959 |
.name = "sndbuf",
|
960 |
.type = QEMU_OPT_SIZE, |
961 |
.help = "send buffer limit"
|
962 |
}, { |
963 |
.name = "vnet_hdr",
|
964 |
.type = QEMU_OPT_BOOL, |
965 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
966 |
}, { |
967 |
.name = "vhost",
|
968 |
.type = QEMU_OPT_BOOL, |
969 |
.help = "enable vhost-net network accelerator",
|
970 |
}, { |
971 |
.name = "vhostfd",
|
972 |
.type = QEMU_OPT_STRING, |
973 |
.help = "file descriptor of an already opened vhost net device",
|
974 |
}, { |
975 |
.name = "vhostforce",
|
976 |
.type = QEMU_OPT_BOOL, |
977 |
.help = "force vhost on for non-MSIX virtio guests",
|
978 |
}, |
979 |
#endif /* _WIN32 */ |
980 |
{ /* end of list */ }
|
981 |
}, |
982 |
}, |
983 |
[NET_CLIENT_TYPE_SOCKET] = { |
984 |
.type = "socket",
|
985 |
.init = net_init_socket, |
986 |
.desc = { |
987 |
NET_COMMON_PARAMS_DESC, |
988 |
{ |
989 |
.name = "fd",
|
990 |
.type = QEMU_OPT_STRING, |
991 |
.help = "file descriptor of an already opened socket",
|
992 |
}, { |
993 |
.name = "listen",
|
994 |
.type = QEMU_OPT_STRING, |
995 |
.help = "port number, and optional hostname, to listen on",
|
996 |
}, { |
997 |
.name = "connect",
|
998 |
.type = QEMU_OPT_STRING, |
999 |
.help = "port number, and optional hostname, to connect to",
|
1000 |
}, { |
1001 |
.name = "mcast",
|
1002 |
.type = QEMU_OPT_STRING, |
1003 |
.help = "UDP multicast address and port number",
|
1004 |
}, { |
1005 |
.name = "localaddr",
|
1006 |
.type = QEMU_OPT_STRING, |
1007 |
.help = "source address for multicast packets",
|
1008 |
}, |
1009 |
{ /* end of list */ }
|
1010 |
}, |
1011 |
}, |
1012 |
#ifdef CONFIG_VDE
|
1013 |
[NET_CLIENT_TYPE_VDE] = { |
1014 |
.type = "vde",
|
1015 |
.init = net_init_vde, |
1016 |
.desc = { |
1017 |
NET_COMMON_PARAMS_DESC, |
1018 |
{ |
1019 |
.name = "sock",
|
1020 |
.type = QEMU_OPT_STRING, |
1021 |
.help = "socket path",
|
1022 |
}, { |
1023 |
.name = "port",
|
1024 |
.type = QEMU_OPT_NUMBER, |
1025 |
.help = "port number",
|
1026 |
}, { |
1027 |
.name = "group",
|
1028 |
.type = QEMU_OPT_STRING, |
1029 |
.help = "group owner of socket",
|
1030 |
}, { |
1031 |
.name = "mode",
|
1032 |
.type = QEMU_OPT_NUMBER, |
1033 |
.help = "permissions for socket",
|
1034 |
}, |
1035 |
{ /* end of list */ }
|
1036 |
}, |
1037 |
}, |
1038 |
#endif
|
1039 |
[NET_CLIENT_TYPE_DUMP] = { |
1040 |
.type = "dump",
|
1041 |
.init = net_init_dump, |
1042 |
.desc = { |
1043 |
NET_COMMON_PARAMS_DESC, |
1044 |
{ |
1045 |
.name = "len",
|
1046 |
.type = QEMU_OPT_SIZE, |
1047 |
.help = "per-packet size limit (64k default)",
|
1048 |
}, { |
1049 |
.name = "file",
|
1050 |
.type = QEMU_OPT_STRING, |
1051 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
1052 |
}, |
1053 |
{ /* end of list */ }
|
1054 |
}, |
1055 |
}, |
1056 |
}; |
1057 |
|
1058 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
1059 |
{ |
1060 |
const char *name; |
1061 |
const char *type; |
1062 |
int i;
|
1063 |
|
1064 |
type = qemu_opt_get(opts, "type");
|
1065 |
if (!type) {
|
1066 |
qerror_report(QERR_MISSING_PARAMETER, "type");
|
1067 |
return -1; |
1068 |
} |
1069 |
|
1070 |
if (is_netdev) {
|
1071 |
if (strcmp(type, "tap") != 0 && |
1072 |
#ifdef CONFIG_SLIRP
|
1073 |
strcmp(type, "user") != 0 && |
1074 |
#endif
|
1075 |
#ifdef CONFIG_VDE
|
1076 |
strcmp(type, "vde") != 0 && |
1077 |
#endif
|
1078 |
strcmp(type, "socket") != 0) { |
1079 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
1080 |
"a netdev backend type");
|
1081 |
return -1; |
1082 |
} |
1083 |
|
1084 |
if (qemu_opt_get(opts, "vlan")) { |
1085 |
qerror_report(QERR_INVALID_PARAMETER, "vlan");
|
1086 |
return -1; |
1087 |
} |
1088 |
if (qemu_opt_get(opts, "name")) { |
1089 |
qerror_report(QERR_INVALID_PARAMETER, "name");
|
1090 |
return -1; |
1091 |
} |
1092 |
if (!qemu_opts_id(opts)) {
|
1093 |
qerror_report(QERR_MISSING_PARAMETER, "id");
|
1094 |
return -1; |
1095 |
} |
1096 |
} |
1097 |
|
1098 |
name = qemu_opts_id(opts); |
1099 |
if (!name) {
|
1100 |
name = qemu_opt_get(opts, "name");
|
1101 |
} |
1102 |
|
1103 |
for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) { |
1104 |
if (net_client_types[i].type != NULL && |
1105 |
!strcmp(net_client_types[i].type, type)) { |
1106 |
VLANState *vlan = NULL;
|
1107 |
int ret;
|
1108 |
|
1109 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
1110 |
return -1; |
1111 |
} |
1112 |
|
1113 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
1114 |
* netdev= parameter. */
|
1115 |
if (!(is_netdev ||
|
1116 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
1117 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
1118 |
} |
1119 |
|
1120 |
ret = 0;
|
1121 |
if (net_client_types[i].init) {
|
1122 |
ret = net_client_types[i].init(opts, mon, name, vlan); |
1123 |
if (ret < 0) { |
1124 |
/* TODO push error reporting into init() methods */
|
1125 |
qerror_report(QERR_DEVICE_INIT_FAILED, type); |
1126 |
return -1; |
1127 |
} |
1128 |
} |
1129 |
return ret;
|
1130 |
} |
1131 |
} |
1132 |
|
1133 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
1134 |
"a network client type");
|
1135 |
return -1; |
1136 |
} |
1137 |
|
1138 |
static int net_host_check_device(const char *device) |
1139 |
{ |
1140 |
int i;
|
1141 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
1142 |
#ifdef CONFIG_SLIRP
|
1143 |
,"user"
|
1144 |
#endif
|
1145 |
#ifdef CONFIG_VDE
|
1146 |
,"vde"
|
1147 |
#endif
|
1148 |
}; |
1149 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
1150 |
if (!strncmp(valid_param_list[i], device,
|
1151 |
strlen(valid_param_list[i]))) |
1152 |
return 1; |
1153 |
} |
1154 |
|
1155 |
return 0; |
1156 |
} |
1157 |
|
1158 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
1159 |
{ |
1160 |
const char *device = qdict_get_str(qdict, "device"); |
1161 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
1162 |
QemuOpts *opts; |
1163 |
|
1164 |
if (!net_host_check_device(device)) {
|
1165 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
1166 |
return;
|
1167 |
} |
1168 |
|
1169 |
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
1170 |
if (!opts) {
|
1171 |
return;
|
1172 |
} |
1173 |
|
1174 |
qemu_opt_set(opts, "type", device);
|
1175 |
|
1176 |
if (net_client_init(mon, opts, 0) < 0) { |
1177 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
1178 |
} |
1179 |
} |
1180 |
|
1181 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
1182 |
{ |
1183 |
VLANClientState *vc; |
1184 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
1185 |
const char *device = qdict_get_str(qdict, "device"); |
1186 |
|
1187 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
1188 |
if (!vc) {
|
1189 |
return;
|
1190 |
} |
1191 |
if (!net_host_check_device(vc->model)) {
|
1192 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
1193 |
return;
|
1194 |
} |
1195 |
qemu_del_vlan_client(vc); |
1196 |
} |
1197 |
|
1198 |
int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1199 |
{ |
1200 |
QemuOpts *opts; |
1201 |
int res;
|
1202 |
|
1203 |
opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
|
1204 |
if (!opts) {
|
1205 |
return -1; |
1206 |
} |
1207 |
|
1208 |
res = net_client_init(mon, opts, 1);
|
1209 |
if (res < 0) { |
1210 |
qemu_opts_del(opts); |
1211 |
} |
1212 |
|
1213 |
return res;
|
1214 |
} |
1215 |
|
1216 |
int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1217 |
{ |
1218 |
const char *id = qdict_get_str(qdict, "id"); |
1219 |
VLANClientState *vc; |
1220 |
|
1221 |
vc = qemu_find_netdev(id); |
1222 |
if (!vc) {
|
1223 |
qerror_report(QERR_DEVICE_NOT_FOUND, id); |
1224 |
return -1; |
1225 |
} |
1226 |
qemu_del_vlan_client(vc); |
1227 |
qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
|
1228 |
return 0; |
1229 |
} |
1230 |
|
1231 |
static void print_net_client(Monitor *mon, VLANClientState *vc) |
1232 |
{ |
1233 |
monitor_printf(mon, "%s: type=%s,%s\n", vc->name,
|
1234 |
net_client_types[vc->info->type].type, vc->info_str); |
1235 |
} |
1236 |
|
1237 |
void do_info_network(Monitor *mon)
|
1238 |
{ |
1239 |
VLANState *vlan; |
1240 |
VLANClientState *vc, *peer; |
1241 |
net_client_type type; |
1242 |
|
1243 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1244 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
1245 |
|
1246 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
1247 |
monitor_printf(mon, " ");
|
1248 |
print_net_client(mon, vc); |
1249 |
} |
1250 |
} |
1251 |
monitor_printf(mon, "Devices not on any VLAN:\n");
|
1252 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
1253 |
peer = vc->peer; |
1254 |
type = vc->info->type; |
1255 |
if (!peer || type == NET_CLIENT_TYPE_NIC) {
|
1256 |
monitor_printf(mon, " ");
|
1257 |
print_net_client(mon, vc); |
1258 |
} /* else it's a netdev connected to a NIC, printed with the NIC */
|
1259 |
if (peer && type == NET_CLIENT_TYPE_NIC) {
|
1260 |
monitor_printf(mon, " \\ ");
|
1261 |
print_net_client(mon, peer); |
1262 |
} |
1263 |
} |
1264 |
} |
1265 |
|
1266 |
int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1267 |
{ |
1268 |
VLANState *vlan; |
1269 |
VLANClientState *vc = NULL;
|
1270 |
const char *name = qdict_get_str(qdict, "name"); |
1271 |
int up = qdict_get_bool(qdict, "up"); |
1272 |
|
1273 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1274 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
1275 |
if (strcmp(vc->name, name) == 0) { |
1276 |
goto done;
|
1277 |
} |
1278 |
} |
1279 |
} |
1280 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
1281 |
if (!strcmp(vc->name, name)) {
|
1282 |
goto done;
|
1283 |
} |
1284 |
} |
1285 |
done:
|
1286 |
|
1287 |
if (!vc) {
|
1288 |
qerror_report(QERR_DEVICE_NOT_FOUND, name); |
1289 |
return -1; |
1290 |
} |
1291 |
|
1292 |
vc->link_down = !up; |
1293 |
|
1294 |
if (vc->info->link_status_changed) {
|
1295 |
vc->info->link_status_changed(vc); |
1296 |
} |
1297 |
|
1298 |
/* Notify peer. Don't update peer link status: this makes it possible to
|
1299 |
* disconnect from host network without notifying the guest.
|
1300 |
* FIXME: is disconnected link status change operation useful?
|
1301 |
*
|
1302 |
* Current behaviour is compatible with qemu vlans where there could be
|
1303 |
* multiple clients that can still communicate with each other in
|
1304 |
* disconnected mode. For now maintain this compatibility. */
|
1305 |
if (vc->peer && vc->peer->info->link_status_changed) {
|
1306 |
vc->peer->info->link_status_changed(vc->peer); |
1307 |
} |
1308 |
return 0; |
1309 |
} |
1310 |
|
1311 |
void net_cleanup(void) |
1312 |
{ |
1313 |
VLANState *vlan; |
1314 |
VLANClientState *vc, *next_vc; |
1315 |
|
1316 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1317 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { |
1318 |
qemu_del_vlan_client(vc); |
1319 |
} |
1320 |
} |
1321 |
|
1322 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { |
1323 |
qemu_del_vlan_client(vc); |
1324 |
} |
1325 |
} |
1326 |
|
1327 |
void net_check_clients(void) |
1328 |
{ |
1329 |
VLANState *vlan; |
1330 |
VLANClientState *vc; |
1331 |
int i;
|
1332 |
|
1333 |
/* Don't warn about the default network setup that you get if
|
1334 |
* no command line -net or -netdev options are specified. There
|
1335 |
* are two cases that we would otherwise complain about:
|
1336 |
* (1) board doesn't support a NIC but the implicit "-net nic"
|
1337 |
* requested one
|
1338 |
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
|
1339 |
* sets up a nic that isn't connected to anything.
|
1340 |
*/
|
1341 |
if (default_net) {
|
1342 |
return;
|
1343 |
} |
1344 |
|
1345 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1346 |
int has_nic = 0, has_host_dev = 0; |
1347 |
|
1348 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
1349 |
switch (vc->info->type) {
|
1350 |
case NET_CLIENT_TYPE_NIC:
|
1351 |
has_nic = 1;
|
1352 |
break;
|
1353 |
case NET_CLIENT_TYPE_USER:
|
1354 |
case NET_CLIENT_TYPE_TAP:
|
1355 |
case NET_CLIENT_TYPE_SOCKET:
|
1356 |
case NET_CLIENT_TYPE_VDE:
|
1357 |
has_host_dev = 1;
|
1358 |
break;
|
1359 |
default: ;
|
1360 |
} |
1361 |
} |
1362 |
if (has_host_dev && !has_nic)
|
1363 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
1364 |
if (has_nic && !has_host_dev)
|
1365 |
fprintf(stderr, |
1366 |
"Warning: vlan %d is not connected to host network\n",
|
1367 |
vlan->id); |
1368 |
} |
1369 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
1370 |
if (!vc->peer) {
|
1371 |
fprintf(stderr, "Warning: %s %s has no peer\n",
|
1372 |
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", |
1373 |
vc->name); |
1374 |
} |
1375 |
} |
1376 |
|
1377 |
/* Check that all NICs requested via -net nic actually got created.
|
1378 |
* NICs created via -device don't need to be checked here because
|
1379 |
* they are always instantiated.
|
1380 |
*/
|
1381 |
for (i = 0; i < MAX_NICS; i++) { |
1382 |
NICInfo *nd = &nd_table[i]; |
1383 |
if (nd->used && !nd->instantiated) {
|
1384 |
fprintf(stderr, "Warning: requested NIC (%s, model %s) "
|
1385 |
"was not created (not supported by this machine?)\n",
|
1386 |
nd->name ? nd->name : "anonymous",
|
1387 |
nd->model ? nd->model : "unspecified");
|
1388 |
} |
1389 |
} |
1390 |
} |
1391 |
|
1392 |
static int net_init_client(QemuOpts *opts, void *dummy) |
1393 |
{ |
1394 |
if (net_client_init(NULL, opts, 0) < 0) |
1395 |
return -1; |
1396 |
return 0; |
1397 |
} |
1398 |
|
1399 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
1400 |
{ |
1401 |
return net_client_init(NULL, opts, 1); |
1402 |
} |
1403 |
|
1404 |
int net_init_clients(void) |
1405 |
{ |
1406 |
QemuOptsList *net = qemu_find_opts("net");
|
1407 |
|
1408 |
if (default_net) {
|
1409 |
/* if no clients, we use a default config */
|
1410 |
qemu_opts_set(net, NULL, "type", "nic"); |
1411 |
#ifdef CONFIG_SLIRP
|
1412 |
qemu_opts_set(net, NULL, "type", "user"); |
1413 |
#endif
|
1414 |
} |
1415 |
|
1416 |
QTAILQ_INIT(&vlans); |
1417 |
QTAILQ_INIT(&non_vlan_clients); |
1418 |
|
1419 |
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |
1420 |
return -1; |
1421 |
|
1422 |
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { |
1423 |
return -1; |
1424 |
} |
1425 |
|
1426 |
return 0; |
1427 |
} |
1428 |
|
1429 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
1430 |
{ |
1431 |
#if defined(CONFIG_SLIRP)
|
1432 |
int ret;
|
1433 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
1434 |
return ret;
|
1435 |
} |
1436 |
#endif
|
1437 |
|
1438 |
if (!qemu_opts_parse(opts_list, optarg, 1)) { |
1439 |
return -1; |
1440 |
} |
1441 |
|
1442 |
default_net = 0;
|
1443 |
return 0; |
1444 |
} |