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/*
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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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|
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#include "config-host.h" |
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|
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#include "net/tap.h" |
| 29 |
#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" |
| 33 |
#include "net/util.h" |
| 34 |
#include "monitor.h" |
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#include "qemu-common.h" |
| 36 |
#include "qemu_socket.h" |
| 37 |
#include "qmp-commands.h" |
| 38 |
#include "hw/qdev.h" |
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#include "iov.h" |
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|
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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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|
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static QTAILQ_HEAD(, VLANState) vlans;
|
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static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
|
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|
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int default_net = 1; |
| 50 |
|
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/***********************************************************/
|
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/* network device redirectors */
|
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|
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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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|
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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); |
| 88 |
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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|
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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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|
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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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|
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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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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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|
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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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|
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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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|
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snprintf(buf, sizeof(buf), "%s.%d", model, id); |
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|
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return g_strdup(buf);
|
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} |
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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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|
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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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|
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assert(info->size >= sizeof(VLANClientState));
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|
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vc = g_malloc0(info->size); |
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|
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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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|
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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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|
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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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|
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return vc;
|
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} |
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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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|
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assert(info->type == NET_CLIENT_TYPE_NIC); |
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assert(info->size >= sizeof(NICState));
|
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|
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nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); |
| 246 |
|
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nic = DO_UPCAST(NICState, nc, nc); |
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nic->conf = conf; |
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nic->opaque = opaque; |
| 250 |
|
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return nic;
|
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} |
| 253 |
|
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static void qemu_cleanup_vlan_client(VLANClientState *vc) |
| 255 |
{
|
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if (vc->vlan) {
|
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QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
| 258 |
} else {
|
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QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
| 260 |
} |
| 261 |
|
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if (vc->info->cleanup) {
|
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vc->info->cleanup(vc); |
| 264 |
} |
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} |
| 266 |
|
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static void qemu_free_vlan_client(VLANClientState *vc) |
| 268 |
{
|
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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); |
| 272 |
} |
| 273 |
if (vc->peer) {
|
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vc->peer->peer = NULL;
|
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} |
| 276 |
} |
| 277 |
g_free(vc->name); |
| 278 |
g_free(vc->model); |
| 279 |
g_free(vc); |
| 280 |
} |
| 281 |
|
| 282 |
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); |
| 287 |
if (nic->peer_deleted) {
|
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return;
|
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} |
| 290 |
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); |
| 295 |
} |
| 296 |
qemu_cleanup_vlan_client(vc); |
| 297 |
return;
|
| 298 |
} |
| 299 |
|
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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); |
| 303 |
if (nic->peer_deleted) {
|
| 304 |
qemu_free_vlan_client(vc->peer); |
| 305 |
} |
| 306 |
} |
| 307 |
|
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qemu_cleanup_vlan_client(vc); |
| 309 |
qemu_free_vlan_client(vc); |
| 310 |
} |
| 311 |
|
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VLANClientState * |
| 313 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
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const char *client_str) |
| 315 |
{
|
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VLANState *vlan; |
| 317 |
VLANClientState *vc; |
| 318 |
|
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vlan = qemu_find_vlan(vlan_id, 0);
|
| 320 |
if (!vlan) {
|
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monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
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return NULL; |
| 323 |
} |
| 324 |
|
| 325 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 326 |
if (!strcmp(vc->name, client_str)) {
|
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break;
|
| 328 |
} |
| 329 |
} |
| 330 |
if (!vc) {
|
| 331 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
| 332 |
client_str, vlan_id); |
| 333 |
} |
| 334 |
|
| 335 |
return vc;
|
| 336 |
} |
| 337 |
|
| 338 |
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
| 339 |
{
|
| 340 |
VLANClientState *nc; |
| 341 |
VLANState *vlan; |
| 342 |
|
| 343 |
QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
|
| 344 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 345 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
| 346 |
} |
| 347 |
} |
| 348 |
|
| 349 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 350 |
QTAILQ_FOREACH(nc, &vlan->clients, next) {
|
| 351 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 352 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
| 353 |
} |
| 354 |
} |
| 355 |
} |
| 356 |
} |
| 357 |
|
| 358 |
int qemu_can_send_packet(VLANClientState *sender)
|
| 359 |
{
|
| 360 |
VLANState *vlan = sender->vlan; |
| 361 |
VLANClientState *vc; |
| 362 |
|
| 363 |
if (sender->peer) {
|
| 364 |
if (sender->peer->receive_disabled) {
|
| 365 |
return 0; |
| 366 |
} else if (sender->peer->info->can_receive && |
| 367 |
!sender->peer->info->can_receive(sender->peer)) {
|
| 368 |
return 0; |
| 369 |
} else {
|
| 370 |
return 1; |
| 371 |
} |
| 372 |
} |
| 373 |
|
| 374 |
if (!sender->vlan) {
|
| 375 |
return 1; |
| 376 |
} |
| 377 |
|
| 378 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 379 |
if (vc == sender) {
|
| 380 |
continue;
|
| 381 |
} |
| 382 |
|
| 383 |
/* no can_receive() handler, they can always receive */
|
| 384 |
if (vc->info->can_receive && !vc->info->can_receive(vc)) {
|
| 385 |
return 0; |
| 386 |
} |
| 387 |
} |
| 388 |
return 1; |
| 389 |
} |
| 390 |
|
| 391 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 392 |
unsigned flags,
|
| 393 |
const uint8_t *data,
|
| 394 |
size_t size, |
| 395 |
void *opaque)
|
| 396 |
{
|
| 397 |
VLANClientState *vc = opaque; |
| 398 |
ssize_t ret; |
| 399 |
|
| 400 |
if (vc->link_down) {
|
| 401 |
return size;
|
| 402 |
} |
| 403 |
|
| 404 |
if (vc->receive_disabled) {
|
| 405 |
return 0; |
| 406 |
} |
| 407 |
|
| 408 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
| 409 |
ret = vc->info->receive_raw(vc, data, size); |
| 410 |
} else {
|
| 411 |
ret = vc->info->receive(vc, data, size); |
| 412 |
} |
| 413 |
|
| 414 |
if (ret == 0) { |
| 415 |
vc->receive_disabled = 1;
|
| 416 |
}; |
| 417 |
|
| 418 |
return ret;
|
| 419 |
} |
| 420 |
|
| 421 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
| 422 |
unsigned flags,
|
| 423 |
const uint8_t *buf,
|
| 424 |
size_t size, |
| 425 |
void *opaque)
|
| 426 |
{
|
| 427 |
VLANState *vlan = opaque; |
| 428 |
VLANClientState *vc; |
| 429 |
ssize_t ret = -1;
|
| 430 |
|
| 431 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 432 |
ssize_t len; |
| 433 |
|
| 434 |
if (vc == sender) {
|
| 435 |
continue;
|
| 436 |
} |
| 437 |
|
| 438 |
if (vc->link_down) {
|
| 439 |
ret = size; |
| 440 |
continue;
|
| 441 |
} |
| 442 |
|
| 443 |
if (vc->receive_disabled) {
|
| 444 |
ret = 0;
|
| 445 |
continue;
|
| 446 |
} |
| 447 |
|
| 448 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
| 449 |
len = vc->info->receive_raw(vc, buf, size); |
| 450 |
} else {
|
| 451 |
len = vc->info->receive(vc, buf, size); |
| 452 |
} |
| 453 |
|
| 454 |
if (len == 0) { |
| 455 |
vc->receive_disabled = 1;
|
| 456 |
} |
| 457 |
|
| 458 |
ret = (ret >= 0) ? ret : len;
|
| 459 |
|
| 460 |
} |
| 461 |
|
| 462 |
return ret;
|
| 463 |
} |
| 464 |
|
| 465 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
| 466 |
{
|
| 467 |
NetQueue *queue; |
| 468 |
|
| 469 |
if (!vc->peer && !vc->vlan) {
|
| 470 |
return;
|
| 471 |
} |
| 472 |
|
| 473 |
if (vc->peer) {
|
| 474 |
queue = vc->peer->send_queue; |
| 475 |
} else {
|
| 476 |
queue = vc->vlan->send_queue; |
| 477 |
} |
| 478 |
|
| 479 |
qemu_net_queue_purge(queue, vc); |
| 480 |
} |
| 481 |
|
| 482 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
| 483 |
{
|
| 484 |
NetQueue *queue; |
| 485 |
|
| 486 |
vc->receive_disabled = 0;
|
| 487 |
|
| 488 |
if (vc->vlan) {
|
| 489 |
queue = vc->vlan->send_queue; |
| 490 |
} else {
|
| 491 |
queue = vc->send_queue; |
| 492 |
} |
| 493 |
|
| 494 |
qemu_net_queue_flush(queue); |
| 495 |
} |
| 496 |
|
| 497 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
| 498 |
unsigned flags,
|
| 499 |
const uint8_t *buf, int size, |
| 500 |
NetPacketSent *sent_cb) |
| 501 |
{
|
| 502 |
NetQueue *queue; |
| 503 |
|
| 504 |
#ifdef DEBUG_NET
|
| 505 |
printf("qemu_send_packet_async:\n");
|
| 506 |
hex_dump(stdout, buf, size); |
| 507 |
#endif
|
| 508 |
|
| 509 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 510 |
return size;
|
| 511 |
} |
| 512 |
|
| 513 |
if (sender->peer) {
|
| 514 |
queue = sender->peer->send_queue; |
| 515 |
} else {
|
| 516 |
queue = sender->vlan->send_queue; |
| 517 |
} |
| 518 |
|
| 519 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
| 520 |
} |
| 521 |
|
| 522 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
| 523 |
const uint8_t *buf, int size, |
| 524 |
NetPacketSent *sent_cb) |
| 525 |
{
|
| 526 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
| 527 |
buf, size, sent_cb); |
| 528 |
} |
| 529 |
|
| 530 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
| 531 |
{
|
| 532 |
qemu_send_packet_async(vc, buf, size, NULL);
|
| 533 |
} |
| 534 |
|
| 535 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
| 536 |
{
|
| 537 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
| 538 |
buf, size, NULL);
|
| 539 |
} |
| 540 |
|
| 541 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
| 542 |
int iovcnt)
|
| 543 |
{
|
| 544 |
uint8_t buffer[4096];
|
| 545 |
size_t offset; |
| 546 |
|
| 547 |
offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer)); |
| 548 |
|
| 549 |
return vc->info->receive(vc, buffer, offset);
|
| 550 |
} |
| 551 |
|
| 552 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 553 |
unsigned flags,
|
| 554 |
const struct iovec *iov, |
| 555 |
int iovcnt,
|
| 556 |
void *opaque)
|
| 557 |
{
|
| 558 |
VLANClientState *vc = opaque; |
| 559 |
|
| 560 |
if (vc->link_down) {
|
| 561 |
return iov_size(iov, iovcnt);
|
| 562 |
} |
| 563 |
|
| 564 |
if (vc->info->receive_iov) {
|
| 565 |
return vc->info->receive_iov(vc, iov, iovcnt);
|
| 566 |
} else {
|
| 567 |
return vc_sendv_compat(vc, iov, iovcnt);
|
| 568 |
} |
| 569 |
} |
| 570 |
|
| 571 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
| 572 |
unsigned flags,
|
| 573 |
const struct iovec *iov, |
| 574 |
int iovcnt,
|
| 575 |
void *opaque)
|
| 576 |
{
|
| 577 |
VLANState *vlan = opaque; |
| 578 |
VLANClientState *vc; |
| 579 |
ssize_t ret = -1;
|
| 580 |
|
| 581 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 582 |
ssize_t len; |
| 583 |
|
| 584 |
if (vc == sender) {
|
| 585 |
continue;
|
| 586 |
} |
| 587 |
|
| 588 |
if (vc->link_down) {
|
| 589 |
ret = iov_size(iov, iovcnt); |
| 590 |
continue;
|
| 591 |
} |
| 592 |
|
| 593 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
| 594 |
|
| 595 |
if (vc->info->receive_iov) {
|
| 596 |
len = vc->info->receive_iov(vc, iov, iovcnt); |
| 597 |
} else {
|
| 598 |
len = vc_sendv_compat(vc, iov, iovcnt); |
| 599 |
} |
| 600 |
|
| 601 |
ret = (ret >= 0) ? ret : len;
|
| 602 |
} |
| 603 |
|
| 604 |
return ret;
|
| 605 |
} |
| 606 |
|
| 607 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
| 608 |
const struct iovec *iov, int iovcnt, |
| 609 |
NetPacketSent *sent_cb) |
| 610 |
{
|
| 611 |
NetQueue *queue; |
| 612 |
|
| 613 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 614 |
return iov_size(iov, iovcnt);
|
| 615 |
} |
| 616 |
|
| 617 |
if (sender->peer) {
|
| 618 |
queue = sender->peer->send_queue; |
| 619 |
} else {
|
| 620 |
queue = sender->vlan->send_queue; |
| 621 |
} |
| 622 |
|
| 623 |
return qemu_net_queue_send_iov(queue, sender,
|
| 624 |
QEMU_NET_PACKET_FLAG_NONE, |
| 625 |
iov, iovcnt, sent_cb); |
| 626 |
} |
| 627 |
|
| 628 |
ssize_t |
| 629 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
| 630 |
{
|
| 631 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
| 632 |
} |
| 633 |
|
| 634 |
/* find or alloc a new VLAN */
|
| 635 |
VLANState *qemu_find_vlan(int id, int allocate) |
| 636 |
{
|
| 637 |
VLANState *vlan; |
| 638 |
|
| 639 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 640 |
if (vlan->id == id) {
|
| 641 |
return vlan;
|
| 642 |
} |
| 643 |
} |
| 644 |
|
| 645 |
if (!allocate) {
|
| 646 |
return NULL; |
| 647 |
} |
| 648 |
|
| 649 |
vlan = g_malloc0(sizeof(VLANState));
|
| 650 |
vlan->id = id; |
| 651 |
QTAILQ_INIT(&vlan->clients); |
| 652 |
|
| 653 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
| 654 |
qemu_vlan_deliver_packet_iov, |
| 655 |
vlan); |
| 656 |
|
| 657 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
| 658 |
|
| 659 |
return vlan;
|
| 660 |
} |
| 661 |
|
| 662 |
VLANClientState *qemu_find_netdev(const char *id) |
| 663 |
{
|
| 664 |
VLANClientState *vc; |
| 665 |
|
| 666 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 667 |
if (vc->info->type == NET_CLIENT_TYPE_NIC)
|
| 668 |
continue;
|
| 669 |
if (!strcmp(vc->name, id)) {
|
| 670 |
return vc;
|
| 671 |
} |
| 672 |
} |
| 673 |
|
| 674 |
return NULL; |
| 675 |
} |
| 676 |
|
| 677 |
static int nic_get_free_idx(void) |
| 678 |
{
|
| 679 |
int index;
|
| 680 |
|
| 681 |
for (index = 0; index < MAX_NICS; index++) |
| 682 |
if (!nd_table[index].used)
|
| 683 |
return index;
|
| 684 |
return -1; |
| 685 |
} |
| 686 |
|
| 687 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
| 688 |
{
|
| 689 |
int i;
|
| 690 |
|
| 691 |
if (!arg || strcmp(arg, "?")) |
| 692 |
return 0; |
| 693 |
|
| 694 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
| 695 |
for (i = 0 ; models[i]; i++) |
| 696 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
| 697 |
return 1; |
| 698 |
} |
| 699 |
|
| 700 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
| 701 |
{
|
| 702 |
const char *models[2]; |
| 703 |
|
| 704 |
models[0] = model;
|
| 705 |
models[1] = NULL; |
| 706 |
|
| 707 |
if (qemu_show_nic_models(nd->model, models))
|
| 708 |
exit(0);
|
| 709 |
if (qemu_find_nic_model(nd, models, model) < 0) |
| 710 |
exit(1);
|
| 711 |
} |
| 712 |
|
| 713 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
| 714 |
const char *default_model) |
| 715 |
{
|
| 716 |
int i;
|
| 717 |
|
| 718 |
if (!nd->model)
|
| 719 |
nd->model = g_strdup(default_model); |
| 720 |
|
| 721 |
for (i = 0 ; models[i]; i++) { |
| 722 |
if (strcmp(nd->model, models[i]) == 0) |
| 723 |
return i;
|
| 724 |
} |
| 725 |
|
| 726 |
error_report("Unsupported NIC model: %s", nd->model);
|
| 727 |
return -1; |
| 728 |
} |
| 729 |
|
| 730 |
int net_handle_fd_param(Monitor *mon, const char *param) |
| 731 |
{
|
| 732 |
int fd;
|
| 733 |
|
| 734 |
if (!qemu_isdigit(param[0]) && mon) { |
| 735 |
|
| 736 |
fd = monitor_get_fd(mon, param); |
| 737 |
if (fd == -1) { |
| 738 |
error_report("No file descriptor named %s found", param);
|
| 739 |
return -1; |
| 740 |
} |
| 741 |
} else {
|
| 742 |
fd = qemu_parse_fd(param); |
| 743 |
} |
| 744 |
|
| 745 |
return fd;
|
| 746 |
} |
| 747 |
|
| 748 |
static int net_init_nic(QemuOpts *opts, const char *name, VLANState *vlan) |
| 749 |
{
|
| 750 |
int idx;
|
| 751 |
NICInfo *nd; |
| 752 |
const char *netdev; |
| 753 |
|
| 754 |
idx = nic_get_free_idx(); |
| 755 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
| 756 |
error_report("Too Many NICs");
|
| 757 |
return -1; |
| 758 |
} |
| 759 |
|
| 760 |
nd = &nd_table[idx]; |
| 761 |
|
| 762 |
memset(nd, 0, sizeof(*nd)); |
| 763 |
|
| 764 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
| 765 |
nd->netdev = qemu_find_netdev(netdev); |
| 766 |
if (!nd->netdev) {
|
| 767 |
error_report("netdev '%s' not found", netdev);
|
| 768 |
return -1; |
| 769 |
} |
| 770 |
} else {
|
| 771 |
assert(vlan); |
| 772 |
nd->vlan = vlan; |
| 773 |
} |
| 774 |
if (name) {
|
| 775 |
nd->name = g_strdup(name); |
| 776 |
} |
| 777 |
if (qemu_opt_get(opts, "model")) { |
| 778 |
nd->model = g_strdup(qemu_opt_get(opts, "model"));
|
| 779 |
} |
| 780 |
if (qemu_opt_get(opts, "addr")) { |
| 781 |
nd->devaddr = g_strdup(qemu_opt_get(opts, "addr"));
|
| 782 |
} |
| 783 |
|
| 784 |
if (qemu_opt_get(opts, "macaddr") && |
| 785 |
net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) { |
| 786 |
error_report("invalid syntax for ethernet address");
|
| 787 |
return -1; |
| 788 |
} |
| 789 |
qemu_macaddr_default_if_unset(&nd->macaddr); |
| 790 |
|
| 791 |
nd->nvectors = qemu_opt_get_number(opts, "vectors",
|
| 792 |
DEV_NVECTORS_UNSPECIFIED); |
| 793 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
| 794 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
| 795 |
error_report("invalid # of vectors: %d", nd->nvectors);
|
| 796 |
return -1; |
| 797 |
} |
| 798 |
|
| 799 |
nd->used = 1;
|
| 800 |
nb_nics++; |
| 801 |
|
| 802 |
return idx;
|
| 803 |
} |
| 804 |
|
| 805 |
#define NET_COMMON_PARAMS_DESC \
|
| 806 |
{ \
|
| 807 |
.name = "type", \
|
| 808 |
.type = QEMU_OPT_STRING, \ |
| 809 |
.help = "net client type (nic, tap etc.)", \
|
| 810 |
}, { \
|
| 811 |
.name = "vlan", \
|
| 812 |
.type = QEMU_OPT_NUMBER, \ |
| 813 |
.help = "vlan number", \
|
| 814 |
}, { \
|
| 815 |
.name = "name", \
|
| 816 |
.type = QEMU_OPT_STRING, \ |
| 817 |
.help = "identifier for monitor commands", \
|
| 818 |
} |
| 819 |
|
| 820 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
| 821 |
const char *name, |
| 822 |
VLANState *vlan); |
| 823 |
|
| 824 |
/* magic number, but compiler will warn if too small */
|
| 825 |
#define NET_MAX_DESC 20 |
| 826 |
|
| 827 |
static const struct { |
| 828 |
const char *type; |
| 829 |
net_client_init_func init; |
| 830 |
QemuOptDesc desc[NET_MAX_DESC]; |
| 831 |
} net_client_types[NET_CLIENT_TYPE_MAX] = {
|
| 832 |
[NET_CLIENT_TYPE_NONE] = {
|
| 833 |
.type = "none",
|
| 834 |
.desc = {
|
| 835 |
NET_COMMON_PARAMS_DESC, |
| 836 |
{ /* end of list */ }
|
| 837 |
}, |
| 838 |
}, |
| 839 |
[NET_CLIENT_TYPE_NIC] = {
|
| 840 |
.type = "nic",
|
| 841 |
.init = net_init_nic, |
| 842 |
.desc = {
|
| 843 |
NET_COMMON_PARAMS_DESC, |
| 844 |
{
|
| 845 |
.name = "netdev",
|
| 846 |
.type = QEMU_OPT_STRING, |
| 847 |
.help = "id of -netdev to connect to",
|
| 848 |
}, |
| 849 |
{
|
| 850 |
.name = "macaddr",
|
| 851 |
.type = QEMU_OPT_STRING, |
| 852 |
.help = "MAC address",
|
| 853 |
}, {
|
| 854 |
.name = "model",
|
| 855 |
.type = QEMU_OPT_STRING, |
| 856 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
| 857 |
}, {
|
| 858 |
.name = "addr",
|
| 859 |
.type = QEMU_OPT_STRING, |
| 860 |
.help = "PCI device address",
|
| 861 |
}, {
|
| 862 |
.name = "vectors",
|
| 863 |
.type = QEMU_OPT_NUMBER, |
| 864 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
| 865 |
}, |
| 866 |
{ /* end of list */ }
|
| 867 |
}, |
| 868 |
}, |
| 869 |
#ifdef CONFIG_SLIRP
|
| 870 |
[NET_CLIENT_TYPE_USER] = {
|
| 871 |
.type = "user",
|
| 872 |
.init = net_init_slirp, |
| 873 |
.desc = {
|
| 874 |
NET_COMMON_PARAMS_DESC, |
| 875 |
{
|
| 876 |
.name = "hostname",
|
| 877 |
.type = QEMU_OPT_STRING, |
| 878 |
.help = "client hostname reported by the builtin DHCP server",
|
| 879 |
}, {
|
| 880 |
.name = "restrict",
|
| 881 |
.type = QEMU_OPT_STRING, |
| 882 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
| 883 |
}, {
|
| 884 |
.name = "ip",
|
| 885 |
.type = QEMU_OPT_STRING, |
| 886 |
.help = "legacy parameter, use net= instead",
|
| 887 |
}, {
|
| 888 |
.name = "net",
|
| 889 |
.type = QEMU_OPT_STRING, |
| 890 |
.help = "IP address and optional netmask",
|
| 891 |
}, {
|
| 892 |
.name = "host",
|
| 893 |
.type = QEMU_OPT_STRING, |
| 894 |
.help = "guest-visible address of the host",
|
| 895 |
}, {
|
| 896 |
.name = "tftp",
|
| 897 |
.type = QEMU_OPT_STRING, |
| 898 |
.help = "root directory of the built-in TFTP server",
|
| 899 |
}, {
|
| 900 |
.name = "bootfile",
|
| 901 |
.type = QEMU_OPT_STRING, |
| 902 |
.help = "BOOTP filename, for use with tftp=",
|
| 903 |
}, {
|
| 904 |
.name = "dhcpstart",
|
| 905 |
.type = QEMU_OPT_STRING, |
| 906 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
| 907 |
}, {
|
| 908 |
.name = "dns",
|
| 909 |
.type = QEMU_OPT_STRING, |
| 910 |
.help = "guest-visible address of the virtual nameserver",
|
| 911 |
}, {
|
| 912 |
.name = "smb",
|
| 913 |
.type = QEMU_OPT_STRING, |
| 914 |
.help = "root directory of the built-in SMB server",
|
| 915 |
}, {
|
| 916 |
.name = "smbserver",
|
| 917 |
.type = QEMU_OPT_STRING, |
| 918 |
.help = "IP address of the built-in SMB server",
|
| 919 |
}, {
|
| 920 |
.name = "hostfwd",
|
| 921 |
.type = QEMU_OPT_STRING, |
| 922 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
| 923 |
}, {
|
| 924 |
.name = "guestfwd",
|
| 925 |
.type = QEMU_OPT_STRING, |
| 926 |
.help = "IP address and port to forward guest TCP connections",
|
| 927 |
}, |
| 928 |
{ /* end of list */ }
|
| 929 |
}, |
| 930 |
}, |
| 931 |
#endif
|
| 932 |
[NET_CLIENT_TYPE_TAP] = {
|
| 933 |
.type = "tap",
|
| 934 |
.init = net_init_tap, |
| 935 |
.desc = {
|
| 936 |
NET_COMMON_PARAMS_DESC, |
| 937 |
{
|
| 938 |
.name = "ifname",
|
| 939 |
.type = QEMU_OPT_STRING, |
| 940 |
.help = "interface name",
|
| 941 |
}, |
| 942 |
#ifndef _WIN32
|
| 943 |
{
|
| 944 |
.name = "fd",
|
| 945 |
.type = QEMU_OPT_STRING, |
| 946 |
.help = "file descriptor of an already opened tap",
|
| 947 |
}, {
|
| 948 |
.name = "script",
|
| 949 |
.type = QEMU_OPT_STRING, |
| 950 |
.help = "script to initialize the interface",
|
| 951 |
}, {
|
| 952 |
.name = "downscript",
|
| 953 |
.type = QEMU_OPT_STRING, |
| 954 |
.help = "script to shut down the interface",
|
| 955 |
}, {
|
| 956 |
#ifdef CONFIG_NET_BRIDGE
|
| 957 |
.name = "helper",
|
| 958 |
.type = QEMU_OPT_STRING, |
| 959 |
.help = "command to execute to configure bridge",
|
| 960 |
}, {
|
| 961 |
#endif
|
| 962 |
.name = "sndbuf",
|
| 963 |
.type = QEMU_OPT_SIZE, |
| 964 |
.help = "send buffer limit"
|
| 965 |
}, {
|
| 966 |
.name = "vnet_hdr",
|
| 967 |
.type = QEMU_OPT_BOOL, |
| 968 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
| 969 |
}, {
|
| 970 |
.name = "vhost",
|
| 971 |
.type = QEMU_OPT_BOOL, |
| 972 |
.help = "enable vhost-net network accelerator",
|
| 973 |
}, {
|
| 974 |
.name = "vhostfd",
|
| 975 |
.type = QEMU_OPT_STRING, |
| 976 |
.help = "file descriptor of an already opened vhost net device",
|
| 977 |
}, {
|
| 978 |
.name = "vhostforce",
|
| 979 |
.type = QEMU_OPT_BOOL, |
| 980 |
.help = "force vhost on for non-MSIX virtio guests",
|
| 981 |
}, |
| 982 |
#endif /* _WIN32 */ |
| 983 |
{ /* end of list */ }
|
| 984 |
}, |
| 985 |
}, |
| 986 |
[NET_CLIENT_TYPE_SOCKET] = {
|
| 987 |
.type = "socket",
|
| 988 |
.init = net_init_socket, |
| 989 |
.desc = {
|
| 990 |
NET_COMMON_PARAMS_DESC, |
| 991 |
{
|
| 992 |
.name = "fd",
|
| 993 |
.type = QEMU_OPT_STRING, |
| 994 |
.help = "file descriptor of an already opened socket",
|
| 995 |
}, {
|
| 996 |
.name = "listen",
|
| 997 |
.type = QEMU_OPT_STRING, |
| 998 |
.help = "port number, and optional hostname, to listen on",
|
| 999 |
}, {
|
| 1000 |
.name = "connect",
|
| 1001 |
.type = QEMU_OPT_STRING, |
| 1002 |
.help = "port number, and optional hostname, to connect to",
|
| 1003 |
}, {
|
| 1004 |
.name = "mcast",
|
| 1005 |
.type = QEMU_OPT_STRING, |
| 1006 |
.help = "UDP multicast address and port number",
|
| 1007 |
}, {
|
| 1008 |
.name = "localaddr",
|
| 1009 |
.type = QEMU_OPT_STRING, |
| 1010 |
.help = "source address and port for multicast and udp packets",
|
| 1011 |
}, {
|
| 1012 |
.name = "udp",
|
| 1013 |
.type = QEMU_OPT_STRING, |
| 1014 |
.help = "UDP unicast address and port number",
|
| 1015 |
}, |
| 1016 |
{ /* end of list */ }
|
| 1017 |
}, |
| 1018 |
}, |
| 1019 |
#ifdef CONFIG_VDE
|
| 1020 |
[NET_CLIENT_TYPE_VDE] = {
|
| 1021 |
.type = "vde",
|
| 1022 |
.init = net_init_vde, |
| 1023 |
.desc = {
|
| 1024 |
NET_COMMON_PARAMS_DESC, |
| 1025 |
{
|
| 1026 |
.name = "sock",
|
| 1027 |
.type = QEMU_OPT_STRING, |
| 1028 |
.help = "socket path",
|
| 1029 |
}, {
|
| 1030 |
.name = "port",
|
| 1031 |
.type = QEMU_OPT_NUMBER, |
| 1032 |
.help = "port number",
|
| 1033 |
}, {
|
| 1034 |
.name = "group",
|
| 1035 |
.type = QEMU_OPT_STRING, |
| 1036 |
.help = "group owner of socket",
|
| 1037 |
}, {
|
| 1038 |
.name = "mode",
|
| 1039 |
.type = QEMU_OPT_NUMBER, |
| 1040 |
.help = "permissions for socket",
|
| 1041 |
}, |
| 1042 |
{ /* end of list */ }
|
| 1043 |
}, |
| 1044 |
}, |
| 1045 |
#endif
|
| 1046 |
[NET_CLIENT_TYPE_DUMP] = {
|
| 1047 |
.type = "dump",
|
| 1048 |
.init = net_init_dump, |
| 1049 |
.desc = {
|
| 1050 |
NET_COMMON_PARAMS_DESC, |
| 1051 |
{
|
| 1052 |
.name = "len",
|
| 1053 |
.type = QEMU_OPT_SIZE, |
| 1054 |
.help = "per-packet size limit (64k default)",
|
| 1055 |
}, {
|
| 1056 |
.name = "file",
|
| 1057 |
.type = QEMU_OPT_STRING, |
| 1058 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
| 1059 |
}, |
| 1060 |
{ /* end of list */ }
|
| 1061 |
}, |
| 1062 |
}, |
| 1063 |
#ifdef CONFIG_NET_BRIDGE
|
| 1064 |
[NET_CLIENT_TYPE_BRIDGE] = {
|
| 1065 |
.type = "bridge",
|
| 1066 |
.init = net_init_bridge, |
| 1067 |
.desc = {
|
| 1068 |
NET_COMMON_PARAMS_DESC, |
| 1069 |
{
|
| 1070 |
.name = "br",
|
| 1071 |
.type = QEMU_OPT_STRING, |
| 1072 |
.help = "bridge name",
|
| 1073 |
}, {
|
| 1074 |
.name = "helper",
|
| 1075 |
.type = QEMU_OPT_STRING, |
| 1076 |
.help = "command to execute to configure bridge",
|
| 1077 |
}, |
| 1078 |
{ /* end of list */ }
|
| 1079 |
}, |
| 1080 |
}, |
| 1081 |
#endif /* CONFIG_NET_BRIDGE */ |
| 1082 |
}; |
| 1083 |
|
| 1084 |
int net_client_init(QemuOpts *opts, int is_netdev, Error **errp) |
| 1085 |
{
|
| 1086 |
const char *name; |
| 1087 |
const char *type; |
| 1088 |
int i;
|
| 1089 |
|
| 1090 |
type = qemu_opt_get(opts, "type");
|
| 1091 |
if (!type) {
|
| 1092 |
error_set(errp, QERR_MISSING_PARAMETER, "type");
|
| 1093 |
return -1; |
| 1094 |
} |
| 1095 |
|
| 1096 |
if (is_netdev) {
|
| 1097 |
if (strcmp(type, "tap") != 0 && |
| 1098 |
#ifdef CONFIG_NET_BRIDGE
|
| 1099 |
strcmp(type, "bridge") != 0 && |
| 1100 |
#endif
|
| 1101 |
#ifdef CONFIG_SLIRP
|
| 1102 |
strcmp(type, "user") != 0 && |
| 1103 |
#endif
|
| 1104 |
#ifdef CONFIG_VDE
|
| 1105 |
strcmp(type, "vde") != 0 && |
| 1106 |
#endif
|
| 1107 |
strcmp(type, "socket") != 0) { |
| 1108 |
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
|
| 1109 |
"a netdev backend type");
|
| 1110 |
return -1; |
| 1111 |
} |
| 1112 |
|
| 1113 |
if (qemu_opt_get(opts, "vlan")) { |
| 1114 |
error_set(errp, QERR_INVALID_PARAMETER, "vlan");
|
| 1115 |
return -1; |
| 1116 |
} |
| 1117 |
if (qemu_opt_get(opts, "name")) { |
| 1118 |
error_set(errp, QERR_INVALID_PARAMETER, "name");
|
| 1119 |
return -1; |
| 1120 |
} |
| 1121 |
if (!qemu_opts_id(opts)) {
|
| 1122 |
error_set(errp, QERR_MISSING_PARAMETER, "id");
|
| 1123 |
return -1; |
| 1124 |
} |
| 1125 |
} |
| 1126 |
|
| 1127 |
name = qemu_opts_id(opts); |
| 1128 |
if (!name) {
|
| 1129 |
name = qemu_opt_get(opts, "name");
|
| 1130 |
} |
| 1131 |
|
| 1132 |
for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) { |
| 1133 |
if (net_client_types[i].type != NULL && |
| 1134 |
!strcmp(net_client_types[i].type, type)) {
|
| 1135 |
Error *local_err = NULL;
|
| 1136 |
VLANState *vlan = NULL;
|
| 1137 |
int ret;
|
| 1138 |
|
| 1139 |
qemu_opts_validate(opts, &net_client_types[i].desc[0], &local_err);
|
| 1140 |
if (error_is_set(&local_err)) {
|
| 1141 |
error_propagate(errp, local_err); |
| 1142 |
return -1; |
| 1143 |
} |
| 1144 |
|
| 1145 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
| 1146 |
* netdev= parameter. */
|
| 1147 |
if (!(is_netdev ||
|
| 1148 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
| 1149 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
| 1150 |
} |
| 1151 |
|
| 1152 |
ret = 0;
|
| 1153 |
if (net_client_types[i].init) {
|
| 1154 |
ret = net_client_types[i].init(opts, name, vlan); |
| 1155 |
if (ret < 0) { |
| 1156 |
/* TODO push error reporting into init() methods */
|
| 1157 |
error_set(errp, QERR_DEVICE_INIT_FAILED, type); |
| 1158 |
return -1; |
| 1159 |
} |
| 1160 |
} |
| 1161 |
return ret;
|
| 1162 |
} |
| 1163 |
} |
| 1164 |
|
| 1165 |
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
|
| 1166 |
"a network client type");
|
| 1167 |
return -1; |
| 1168 |
} |
| 1169 |
|
| 1170 |
static int net_host_check_device(const char *device) |
| 1171 |
{
|
| 1172 |
int i;
|
| 1173 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
| 1174 |
#ifdef CONFIG_NET_BRIDGE
|
| 1175 |
, "bridge"
|
| 1176 |
#endif
|
| 1177 |
#ifdef CONFIG_SLIRP
|
| 1178 |
,"user"
|
| 1179 |
#endif
|
| 1180 |
#ifdef CONFIG_VDE
|
| 1181 |
,"vde"
|
| 1182 |
#endif
|
| 1183 |
}; |
| 1184 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
| 1185 |
if (!strncmp(valid_param_list[i], device,
|
| 1186 |
strlen(valid_param_list[i]))) |
| 1187 |
return 1; |
| 1188 |
} |
| 1189 |
|
| 1190 |
return 0; |
| 1191 |
} |
| 1192 |
|
| 1193 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
| 1194 |
{
|
| 1195 |
const char *device = qdict_get_str(qdict, "device"); |
| 1196 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
| 1197 |
Error *local_err = NULL;
|
| 1198 |
QemuOpts *opts; |
| 1199 |
|
| 1200 |
if (!net_host_check_device(device)) {
|
| 1201 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1202 |
return;
|
| 1203 |
} |
| 1204 |
|
| 1205 |
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
| 1206 |
if (!opts) {
|
| 1207 |
return;
|
| 1208 |
} |
| 1209 |
|
| 1210 |
qemu_opt_set(opts, "type", device);
|
| 1211 |
|
| 1212 |
net_client_init(opts, 0, &local_err);
|
| 1213 |
if (error_is_set(&local_err)) {
|
| 1214 |
qerror_report_err(local_err); |
| 1215 |
error_free(local_err); |
| 1216 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
| 1217 |
} |
| 1218 |
} |
| 1219 |
|
| 1220 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
| 1221 |
{
|
| 1222 |
VLANClientState *vc; |
| 1223 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
| 1224 |
const char *device = qdict_get_str(qdict, "device"); |
| 1225 |
|
| 1226 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
| 1227 |
if (!vc) {
|
| 1228 |
return;
|
| 1229 |
} |
| 1230 |
if (!net_host_check_device(vc->model)) {
|
| 1231 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1232 |
return;
|
| 1233 |
} |
| 1234 |
qemu_del_vlan_client(vc); |
| 1235 |
} |
| 1236 |
|
| 1237 |
void netdev_add(QemuOpts *opts, Error **errp)
|
| 1238 |
{
|
| 1239 |
net_client_init(opts, 1, errp);
|
| 1240 |
} |
| 1241 |
|
| 1242 |
int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret) |
| 1243 |
{
|
| 1244 |
Error *local_err = NULL;
|
| 1245 |
QemuOptsList *opts_list; |
| 1246 |
QemuOpts *opts; |
| 1247 |
|
| 1248 |
opts_list = qemu_find_opts_err("netdev", &local_err);
|
| 1249 |
if (error_is_set(&local_err)) {
|
| 1250 |
goto exit_err;
|
| 1251 |
} |
| 1252 |
|
| 1253 |
opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
| 1254 |
if (error_is_set(&local_err)) {
|
| 1255 |
goto exit_err;
|
| 1256 |
} |
| 1257 |
|
| 1258 |
netdev_add(opts, &local_err); |
| 1259 |
if (error_is_set(&local_err)) {
|
| 1260 |
qemu_opts_del(opts); |
| 1261 |
goto exit_err;
|
| 1262 |
} |
| 1263 |
|
| 1264 |
return 0; |
| 1265 |
|
| 1266 |
exit_err:
|
| 1267 |
qerror_report_err(local_err); |
| 1268 |
error_free(local_err); |
| 1269 |
return -1; |
| 1270 |
} |
| 1271 |
|
| 1272 |
void qmp_netdev_del(const char *id, Error **errp) |
| 1273 |
{
|
| 1274 |
VLANClientState *vc; |
| 1275 |
|
| 1276 |
vc = qemu_find_netdev(id); |
| 1277 |
if (!vc) {
|
| 1278 |
error_set(errp, QERR_DEVICE_NOT_FOUND, id); |
| 1279 |
return;
|
| 1280 |
} |
| 1281 |
|
| 1282 |
qemu_del_vlan_client(vc); |
| 1283 |
qemu_opts_del(qemu_opts_find(qemu_find_opts_err("netdev", errp), id));
|
| 1284 |
} |
| 1285 |
|
| 1286 |
static void print_net_client(Monitor *mon, VLANClientState *vc) |
| 1287 |
{
|
| 1288 |
monitor_printf(mon, "%s: type=%s,%s\n", vc->name,
|
| 1289 |
net_client_types[vc->info->type].type, vc->info_str); |
| 1290 |
} |
| 1291 |
|
| 1292 |
void do_info_network(Monitor *mon)
|
| 1293 |
{
|
| 1294 |
VLANState *vlan; |
| 1295 |
VLANClientState *vc, *peer; |
| 1296 |
net_client_type type; |
| 1297 |
|
| 1298 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1299 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
| 1300 |
|
| 1301 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1302 |
monitor_printf(mon, " ");
|
| 1303 |
print_net_client(mon, vc); |
| 1304 |
} |
| 1305 |
} |
| 1306 |
monitor_printf(mon, "Devices not on any VLAN:\n");
|
| 1307 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 1308 |
peer = vc->peer; |
| 1309 |
type = vc->info->type; |
| 1310 |
if (!peer || type == NET_CLIENT_TYPE_NIC) {
|
| 1311 |
monitor_printf(mon, " ");
|
| 1312 |
print_net_client(mon, vc); |
| 1313 |
} /* else it's a netdev connected to a NIC, printed with the NIC */
|
| 1314 |
if (peer && type == NET_CLIENT_TYPE_NIC) {
|
| 1315 |
monitor_printf(mon, " \\ ");
|
| 1316 |
print_net_client(mon, peer); |
| 1317 |
} |
| 1318 |
} |
| 1319 |
} |
| 1320 |
|
| 1321 |
void qmp_set_link(const char *name, bool up, Error **errp) |
| 1322 |
{
|
| 1323 |
VLANState *vlan; |
| 1324 |
VLANClientState *vc = NULL;
|
| 1325 |
|
| 1326 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1327 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1328 |
if (strcmp(vc->name, name) == 0) { |
| 1329 |
goto done;
|
| 1330 |
} |
| 1331 |
} |
| 1332 |
} |
| 1333 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 1334 |
if (!strcmp(vc->name, name)) {
|
| 1335 |
goto done;
|
| 1336 |
} |
| 1337 |
} |
| 1338 |
done:
|
| 1339 |
|
| 1340 |
if (!vc) {
|
| 1341 |
error_set(errp, QERR_DEVICE_NOT_FOUND, name); |
| 1342 |
return;
|
| 1343 |
} |
| 1344 |
|
| 1345 |
vc->link_down = !up; |
| 1346 |
|
| 1347 |
if (vc->info->link_status_changed) {
|
| 1348 |
vc->info->link_status_changed(vc); |
| 1349 |
} |
| 1350 |
|
| 1351 |
/* Notify peer. Don't update peer link status: this makes it possible to
|
| 1352 |
* disconnect from host network without notifying the guest.
|
| 1353 |
* FIXME: is disconnected link status change operation useful?
|
| 1354 |
*
|
| 1355 |
* Current behaviour is compatible with qemu vlans where there could be
|
| 1356 |
* multiple clients that can still communicate with each other in
|
| 1357 |
* disconnected mode. For now maintain this compatibility. */
|
| 1358 |
if (vc->peer && vc->peer->info->link_status_changed) {
|
| 1359 |
vc->peer->info->link_status_changed(vc->peer); |
| 1360 |
} |
| 1361 |
} |
| 1362 |
|
| 1363 |
void net_cleanup(void) |
| 1364 |
{
|
| 1365 |
VLANState *vlan; |
| 1366 |
VLANClientState *vc, *next_vc; |
| 1367 |
|
| 1368 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1369 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
| 1370 |
qemu_del_vlan_client(vc); |
| 1371 |
} |
| 1372 |
} |
| 1373 |
|
| 1374 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
| 1375 |
qemu_del_vlan_client(vc); |
| 1376 |
} |
| 1377 |
} |
| 1378 |
|
| 1379 |
void net_check_clients(void) |
| 1380 |
{
|
| 1381 |
VLANState *vlan; |
| 1382 |
VLANClientState *vc; |
| 1383 |
int i;
|
| 1384 |
|
| 1385 |
/* Don't warn about the default network setup that you get if
|
| 1386 |
* no command line -net or -netdev options are specified. There
|
| 1387 |
* are two cases that we would otherwise complain about:
|
| 1388 |
* (1) board doesn't support a NIC but the implicit "-net nic"
|
| 1389 |
* requested one
|
| 1390 |
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
|
| 1391 |
* sets up a nic that isn't connected to anything.
|
| 1392 |
*/
|
| 1393 |
if (default_net) {
|
| 1394 |
return;
|
| 1395 |
} |
| 1396 |
|
| 1397 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1398 |
int has_nic = 0, has_host_dev = 0; |
| 1399 |
|
| 1400 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1401 |
switch (vc->info->type) {
|
| 1402 |
case NET_CLIENT_TYPE_NIC:
|
| 1403 |
has_nic = 1;
|
| 1404 |
break;
|
| 1405 |
case NET_CLIENT_TYPE_USER:
|
| 1406 |
case NET_CLIENT_TYPE_TAP:
|
| 1407 |
case NET_CLIENT_TYPE_SOCKET:
|
| 1408 |
case NET_CLIENT_TYPE_VDE:
|
| 1409 |
has_host_dev = 1;
|
| 1410 |
break;
|
| 1411 |
default: ;
|
| 1412 |
} |
| 1413 |
} |
| 1414 |
if (has_host_dev && !has_nic)
|
| 1415 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
| 1416 |
if (has_nic && !has_host_dev)
|
| 1417 |
fprintf(stderr, |
| 1418 |
"Warning: vlan %d is not connected to host network\n",
|
| 1419 |
vlan->id); |
| 1420 |
} |
| 1421 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 1422 |
if (!vc->peer) {
|
| 1423 |
fprintf(stderr, "Warning: %s %s has no peer\n",
|
| 1424 |
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", |
| 1425 |
vc->name); |
| 1426 |
} |
| 1427 |
} |
| 1428 |
|
| 1429 |
/* Check that all NICs requested via -net nic actually got created.
|
| 1430 |
* NICs created via -device don't need to be checked here because
|
| 1431 |
* they are always instantiated.
|
| 1432 |
*/
|
| 1433 |
for (i = 0; i < MAX_NICS; i++) { |
| 1434 |
NICInfo *nd = &nd_table[i]; |
| 1435 |
if (nd->used && !nd->instantiated) {
|
| 1436 |
fprintf(stderr, "Warning: requested NIC (%s, model %s) "
|
| 1437 |
"was not created (not supported by this machine?)\n",
|
| 1438 |
nd->name ? nd->name : "anonymous",
|
| 1439 |
nd->model ? nd->model : "unspecified");
|
| 1440 |
} |
| 1441 |
} |
| 1442 |
} |
| 1443 |
|
| 1444 |
static int net_init_client(QemuOpts *opts, void *dummy) |
| 1445 |
{
|
| 1446 |
Error *local_err = NULL;
|
| 1447 |
|
| 1448 |
net_client_init(opts, 0, &local_err);
|
| 1449 |
if (error_is_set(&local_err)) {
|
| 1450 |
qerror_report_err(local_err); |
| 1451 |
error_free(local_err); |
| 1452 |
return -1; |
| 1453 |
} |
| 1454 |
|
| 1455 |
return 0; |
| 1456 |
} |
| 1457 |
|
| 1458 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
| 1459 |
{
|
| 1460 |
Error *local_err = NULL;
|
| 1461 |
int ret;
|
| 1462 |
|
| 1463 |
ret = net_client_init(opts, 1, &local_err);
|
| 1464 |
if (error_is_set(&local_err)) {
|
| 1465 |
qerror_report_err(local_err); |
| 1466 |
error_free(local_err); |
| 1467 |
return -1; |
| 1468 |
} |
| 1469 |
|
| 1470 |
return ret;
|
| 1471 |
} |
| 1472 |
|
| 1473 |
int net_init_clients(void) |
| 1474 |
{
|
| 1475 |
QemuOptsList *net = qemu_find_opts("net");
|
| 1476 |
|
| 1477 |
if (default_net) {
|
| 1478 |
/* if no clients, we use a default config */
|
| 1479 |
qemu_opts_set(net, NULL, "type", "nic"); |
| 1480 |
#ifdef CONFIG_SLIRP
|
| 1481 |
qemu_opts_set(net, NULL, "type", "user"); |
| 1482 |
#endif
|
| 1483 |
} |
| 1484 |
|
| 1485 |
QTAILQ_INIT(&vlans); |
| 1486 |
QTAILQ_INIT(&non_vlan_clients); |
| 1487 |
|
| 1488 |
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |
| 1489 |
return -1; |
| 1490 |
|
| 1491 |
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { |
| 1492 |
return -1; |
| 1493 |
} |
| 1494 |
|
| 1495 |
return 0; |
| 1496 |
} |
| 1497 |
|
| 1498 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
| 1499 |
{
|
| 1500 |
#if defined(CONFIG_SLIRP)
|
| 1501 |
int ret;
|
| 1502 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
| 1503 |
return ret;
|
| 1504 |
} |
| 1505 |
#endif
|
| 1506 |
|
| 1507 |
if (!qemu_opts_parse(opts_list, optarg, 1)) { |
| 1508 |
return -1; |
| 1509 |
} |
| 1510 |
|
| 1511 |
default_net = 0;
|
| 1512 |
return 0; |
| 1513 |
} |
| 1514 |
|
| 1515 |
/* From FreeBSD */
|
| 1516 |
/* XXX: optimize */
|
| 1517 |
unsigned compute_mcast_idx(const uint8_t *ep) |
| 1518 |
{
|
| 1519 |
uint32_t crc; |
| 1520 |
int carry, i, j;
|
| 1521 |
uint8_t b; |
| 1522 |
|
| 1523 |
crc = 0xffffffff;
|
| 1524 |
for (i = 0; i < 6; i++) { |
| 1525 |
b = *ep++; |
| 1526 |
for (j = 0; j < 8; j++) { |
| 1527 |
carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); |
| 1528 |
crc <<= 1;
|
| 1529 |
b >>= 1;
|
| 1530 |
if (carry) {
|
| 1531 |
crc = ((crc ^ POLYNOMIAL) | carry); |
| 1532 |
} |
| 1533 |
} |
| 1534 |
} |
| 1535 |
return crc >> 26; |
| 1536 |
} |