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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" |
25 |
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#include "config-host.h" |
27 |
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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 "sysemu.h" |
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#include "qemu-common.h" |
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#include "qemu_socket.h" |
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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; |
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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); |
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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_src_port(struct sockaddr_in *haddr, |
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struct sockaddr_in *saddr,
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const char *input_str) |
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{ |
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char *str = qemu_strdup(input_str);
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char *host_str = str;
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char *src_str;
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const char *src_str2; |
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char *ptr;
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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,','))) |
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*ptr = '\0';
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|
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if ((src_str = strchr(input_str,'@'))) { |
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*src_str = '\0';
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src_str++; |
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} |
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if (parse_host_port(haddr, host_str) < 0) |
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goto fail;
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src_str2 = src_str; |
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if (!src_str || *src_str == '\0') |
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src_str2 = ":0";
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if (parse_host_port(saddr, src_str2) < 0) |
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goto fail;
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free(str); |
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return(0); |
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fail:
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free(str); |
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return -1; |
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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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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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char buf[256]; |
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int id = 0; |
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QTAILQ_FOREACH(vlan, &vlans, next) { |
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VLANClientState *vc; |
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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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snprintf(buf, sizeof(buf), "%s.%d", model, id); |
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return qemu_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 = qemu_mallocz(info->size); |
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vc->info = info; |
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vc->model = qemu_strdup(model); |
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if (name) {
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vc->name = qemu_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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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); |
252 |
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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); |
256 |
} |
257 |
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return vc;
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} |
260 |
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NICState *qemu_new_nic(NetClientInfo *info, |
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NICConf *conf, |
263 |
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); |
274 |
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nic = DO_UPCAST(NICState, nc, nc); |
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nic->conf = conf; |
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nic->opaque = opaque; |
278 |
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return nic;
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} |
281 |
|
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void qemu_del_vlan_client(VLANClientState *vc)
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{ |
284 |
if (vc->vlan) {
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QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
286 |
} else {
|
287 |
if (vc->send_queue) {
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qemu_del_net_queue(vc->send_queue); |
289 |
} |
290 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
291 |
if (vc->peer) {
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vc->peer->peer = NULL;
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} |
294 |
} |
295 |
|
296 |
if (vc->info->cleanup) {
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vc->info->cleanup(vc); |
298 |
} |
299 |
|
300 |
qemu_free(vc->name); |
301 |
qemu_free(vc->model); |
302 |
qemu_free(vc); |
303 |
} |
304 |
|
305 |
VLANClientState * |
306 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
307 |
const char *client_str) |
308 |
{ |
309 |
VLANState *vlan; |
310 |
VLANClientState *vc; |
311 |
|
312 |
vlan = qemu_find_vlan(vlan_id, 0);
|
313 |
if (!vlan) {
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314 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
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315 |
return NULL; |
316 |
} |
317 |
|
318 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
319 |
if (!strcmp(vc->name, client_str)) {
|
320 |
break;
|
321 |
} |
322 |
} |
323 |
if (!vc) {
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324 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
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325 |
client_str, vlan_id); |
326 |
} |
327 |
|
328 |
return vc;
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329 |
} |
330 |
|
331 |
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
332 |
{ |
333 |
VLANClientState *nc; |
334 |
VLANState *vlan; |
335 |
|
336 |
QTAILQ_FOREACH(nc, &non_vlan_clients, next) { |
337 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
338 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
339 |
} |
340 |
} |
341 |
|
342 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
343 |
QTAILQ_FOREACH(nc, &vlan->clients, next) { |
344 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
345 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
346 |
} |
347 |
} |
348 |
} |
349 |
} |
350 |
|
351 |
int qemu_can_send_packet(VLANClientState *sender)
|
352 |
{ |
353 |
VLANState *vlan = sender->vlan; |
354 |
VLANClientState *vc; |
355 |
|
356 |
if (sender->peer) {
|
357 |
if (sender->peer->receive_disabled) {
|
358 |
return 0; |
359 |
} else if (sender->peer->info->can_receive && |
360 |
!sender->peer->info->can_receive(sender->peer)) { |
361 |
return 0; |
362 |
} else {
|
363 |
return 1; |
364 |
} |
365 |
} |
366 |
|
367 |
if (!sender->vlan) {
|
368 |
return 1; |
369 |
} |
370 |
|
371 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
372 |
if (vc == sender) {
|
373 |
continue;
|
374 |
} |
375 |
|
376 |
/* no can_receive() handler, they can always receive */
|
377 |
if (!vc->info->can_receive || vc->info->can_receive(vc)) {
|
378 |
return 1; |
379 |
} |
380 |
} |
381 |
return 0; |
382 |
} |
383 |
|
384 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
385 |
unsigned flags,
|
386 |
const uint8_t *data,
|
387 |
size_t size, |
388 |
void *opaque)
|
389 |
{ |
390 |
VLANClientState *vc = opaque; |
391 |
ssize_t ret; |
392 |
|
393 |
if (vc->link_down) {
|
394 |
return size;
|
395 |
} |
396 |
|
397 |
if (vc->receive_disabled) {
|
398 |
return 0; |
399 |
} |
400 |
|
401 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
402 |
ret = vc->info->receive_raw(vc, data, size); |
403 |
} else {
|
404 |
ret = vc->info->receive(vc, data, size); |
405 |
} |
406 |
|
407 |
if (ret == 0) { |
408 |
vc->receive_disabled = 1;
|
409 |
}; |
410 |
|
411 |
return ret;
|
412 |
} |
413 |
|
414 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
415 |
unsigned flags,
|
416 |
const uint8_t *buf,
|
417 |
size_t size, |
418 |
void *opaque)
|
419 |
{ |
420 |
VLANState *vlan = opaque; |
421 |
VLANClientState *vc; |
422 |
ssize_t ret = -1;
|
423 |
|
424 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
425 |
ssize_t len; |
426 |
|
427 |
if (vc == sender) {
|
428 |
continue;
|
429 |
} |
430 |
|
431 |
if (vc->link_down) {
|
432 |
ret = size; |
433 |
continue;
|
434 |
} |
435 |
|
436 |
if (vc->receive_disabled) {
|
437 |
ret = 0;
|
438 |
continue;
|
439 |
} |
440 |
|
441 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
442 |
len = vc->info->receive_raw(vc, buf, size); |
443 |
} else {
|
444 |
len = vc->info->receive(vc, buf, size); |
445 |
} |
446 |
|
447 |
if (len == 0) { |
448 |
vc->receive_disabled = 1;
|
449 |
} |
450 |
|
451 |
ret = (ret >= 0) ? ret : len;
|
452 |
|
453 |
} |
454 |
|
455 |
return ret;
|
456 |
} |
457 |
|
458 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
459 |
{ |
460 |
NetQueue *queue; |
461 |
|
462 |
if (!vc->peer && !vc->vlan) {
|
463 |
return;
|
464 |
} |
465 |
|
466 |
if (vc->peer) {
|
467 |
queue = vc->peer->send_queue; |
468 |
} else {
|
469 |
queue = vc->vlan->send_queue; |
470 |
} |
471 |
|
472 |
qemu_net_queue_purge(queue, vc); |
473 |
} |
474 |
|
475 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
476 |
{ |
477 |
NetQueue *queue; |
478 |
|
479 |
vc->receive_disabled = 0;
|
480 |
|
481 |
if (vc->vlan) {
|
482 |
queue = vc->vlan->send_queue; |
483 |
} else {
|
484 |
queue = vc->send_queue; |
485 |
} |
486 |
|
487 |
qemu_net_queue_flush(queue); |
488 |
} |
489 |
|
490 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
491 |
unsigned flags,
|
492 |
const uint8_t *buf, int size, |
493 |
NetPacketSent *sent_cb) |
494 |
{ |
495 |
NetQueue *queue; |
496 |
|
497 |
#ifdef DEBUG_NET
|
498 |
printf("qemu_send_packet_async:\n");
|
499 |
hex_dump(stdout, buf, size); |
500 |
#endif
|
501 |
|
502 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
503 |
return size;
|
504 |
} |
505 |
|
506 |
if (sender->peer) {
|
507 |
queue = sender->peer->send_queue; |
508 |
} else {
|
509 |
queue = sender->vlan->send_queue; |
510 |
} |
511 |
|
512 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
513 |
} |
514 |
|
515 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
516 |
const uint8_t *buf, int size, |
517 |
NetPacketSent *sent_cb) |
518 |
{ |
519 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
520 |
buf, size, sent_cb); |
521 |
} |
522 |
|
523 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
524 |
{ |
525 |
qemu_send_packet_async(vc, buf, size, NULL);
|
526 |
} |
527 |
|
528 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
529 |
{ |
530 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
531 |
buf, size, NULL);
|
532 |
} |
533 |
|
534 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
535 |
int iovcnt)
|
536 |
{ |
537 |
uint8_t buffer[4096];
|
538 |
size_t offset = 0;
|
539 |
int i;
|
540 |
|
541 |
for (i = 0; i < iovcnt; i++) { |
542 |
size_t len; |
543 |
|
544 |
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
545 |
memcpy(buffer + offset, iov[i].iov_base, len); |
546 |
offset += len; |
547 |
} |
548 |
|
549 |
return vc->info->receive(vc, buffer, offset);
|
550 |
} |
551 |
|
552 |
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
553 |
{ |
554 |
size_t offset = 0;
|
555 |
int i;
|
556 |
|
557 |
for (i = 0; i < iovcnt; i++) |
558 |
offset += iov[i].iov_len; |
559 |
return offset;
|
560 |
} |
561 |
|
562 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
563 |
unsigned flags,
|
564 |
const struct iovec *iov, |
565 |
int iovcnt,
|
566 |
void *opaque)
|
567 |
{ |
568 |
VLANClientState *vc = opaque; |
569 |
|
570 |
if (vc->link_down) {
|
571 |
return calc_iov_length(iov, iovcnt);
|
572 |
} |
573 |
|
574 |
if (vc->info->receive_iov) {
|
575 |
return vc->info->receive_iov(vc, iov, iovcnt);
|
576 |
} else {
|
577 |
return vc_sendv_compat(vc, iov, iovcnt);
|
578 |
} |
579 |
} |
580 |
|
581 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
582 |
unsigned flags,
|
583 |
const struct iovec *iov, |
584 |
int iovcnt,
|
585 |
void *opaque)
|
586 |
{ |
587 |
VLANState *vlan = opaque; |
588 |
VLANClientState *vc; |
589 |
ssize_t ret = -1;
|
590 |
|
591 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
592 |
ssize_t len; |
593 |
|
594 |
if (vc == sender) {
|
595 |
continue;
|
596 |
} |
597 |
|
598 |
if (vc->link_down) {
|
599 |
ret = calc_iov_length(iov, iovcnt); |
600 |
continue;
|
601 |
} |
602 |
|
603 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
604 |
|
605 |
if (vc->info->receive_iov) {
|
606 |
len = vc->info->receive_iov(vc, iov, iovcnt); |
607 |
} else {
|
608 |
len = vc_sendv_compat(vc, iov, iovcnt); |
609 |
} |
610 |
|
611 |
ret = (ret >= 0) ? ret : len;
|
612 |
} |
613 |
|
614 |
return ret;
|
615 |
} |
616 |
|
617 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
618 |
const struct iovec *iov, int iovcnt, |
619 |
NetPacketSent *sent_cb) |
620 |
{ |
621 |
NetQueue *queue; |
622 |
|
623 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
624 |
return calc_iov_length(iov, iovcnt);
|
625 |
} |
626 |
|
627 |
if (sender->peer) {
|
628 |
queue = sender->peer->send_queue; |
629 |
} else {
|
630 |
queue = sender->vlan->send_queue; |
631 |
} |
632 |
|
633 |
return qemu_net_queue_send_iov(queue, sender,
|
634 |
QEMU_NET_PACKET_FLAG_NONE, |
635 |
iov, iovcnt, sent_cb); |
636 |
} |
637 |
|
638 |
ssize_t |
639 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
640 |
{ |
641 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
642 |
} |
643 |
|
644 |
/* find or alloc a new VLAN */
|
645 |
VLANState *qemu_find_vlan(int id, int allocate) |
646 |
{ |
647 |
VLANState *vlan; |
648 |
|
649 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
650 |
if (vlan->id == id) {
|
651 |
return vlan;
|
652 |
} |
653 |
} |
654 |
|
655 |
if (!allocate) {
|
656 |
return NULL; |
657 |
} |
658 |
|
659 |
vlan = qemu_mallocz(sizeof(VLANState));
|
660 |
vlan->id = id; |
661 |
QTAILQ_INIT(&vlan->clients); |
662 |
|
663 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
664 |
qemu_vlan_deliver_packet_iov, |
665 |
vlan); |
666 |
|
667 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
668 |
|
669 |
return vlan;
|
670 |
} |
671 |
|
672 |
VLANClientState *qemu_find_netdev(const char *id) |
673 |
{ |
674 |
VLANClientState *vc; |
675 |
|
676 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
677 |
if (!strcmp(vc->name, id)) {
|
678 |
return vc;
|
679 |
} |
680 |
} |
681 |
|
682 |
return NULL; |
683 |
} |
684 |
|
685 |
static int nic_get_free_idx(void) |
686 |
{ |
687 |
int index;
|
688 |
|
689 |
for (index = 0; index < MAX_NICS; index++) |
690 |
if (!nd_table[index].used)
|
691 |
return index;
|
692 |
return -1; |
693 |
} |
694 |
|
695 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
696 |
{ |
697 |
int i;
|
698 |
|
699 |
if (!arg || strcmp(arg, "?")) |
700 |
return 0; |
701 |
|
702 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
703 |
for (i = 0 ; models[i]; i++) |
704 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
705 |
return 1; |
706 |
} |
707 |
|
708 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
709 |
{ |
710 |
const char *models[2]; |
711 |
|
712 |
models[0] = model;
|
713 |
models[1] = NULL; |
714 |
|
715 |
if (qemu_show_nic_models(nd->model, models))
|
716 |
exit(0);
|
717 |
if (qemu_find_nic_model(nd, models, model) < 0) |
718 |
exit(1);
|
719 |
} |
720 |
|
721 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
722 |
const char *default_model) |
723 |
{ |
724 |
int i;
|
725 |
|
726 |
if (!nd->model)
|
727 |
nd->model = qemu_strdup(default_model); |
728 |
|
729 |
for (i = 0 ; models[i]; i++) { |
730 |
if (strcmp(nd->model, models[i]) == 0) |
731 |
return i;
|
732 |
} |
733 |
|
734 |
qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
|
735 |
return -1; |
736 |
} |
737 |
|
738 |
int net_handle_fd_param(Monitor *mon, const char *param) |
739 |
{ |
740 |
if (!qemu_isdigit(param[0])) { |
741 |
int fd;
|
742 |
|
743 |
fd = monitor_get_fd(mon, param); |
744 |
if (fd == -1) { |
745 |
qemu_error("No file descriptor named %s found", param);
|
746 |
return -1; |
747 |
} |
748 |
|
749 |
return fd;
|
750 |
} else {
|
751 |
return strtol(param, NULL, 0); |
752 |
} |
753 |
} |
754 |
|
755 |
static int net_init_nic(QemuOpts *opts, |
756 |
Monitor *mon, |
757 |
const char *name, |
758 |
VLANState *vlan) |
759 |
{ |
760 |
int idx;
|
761 |
NICInfo *nd; |
762 |
const char *netdev; |
763 |
|
764 |
idx = nic_get_free_idx(); |
765 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
766 |
qemu_error("Too Many NICs\n");
|
767 |
return -1; |
768 |
} |
769 |
|
770 |
nd = &nd_table[idx]; |
771 |
|
772 |
memset(nd, 0, sizeof(*nd)); |
773 |
|
774 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
775 |
nd->netdev = qemu_find_netdev(netdev); |
776 |
if (!nd->netdev) {
|
777 |
qemu_error("netdev '%s' not found\n", netdev);
|
778 |
return -1; |
779 |
} |
780 |
} else {
|
781 |
assert(vlan); |
782 |
nd->vlan = vlan; |
783 |
} |
784 |
if (name) {
|
785 |
nd->name = qemu_strdup(name); |
786 |
} |
787 |
if (qemu_opt_get(opts, "model")) { |
788 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
789 |
} |
790 |
if (qemu_opt_get(opts, "addr")) { |
791 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
792 |
} |
793 |
|
794 |
nd->macaddr[0] = 0x52; |
795 |
nd->macaddr[1] = 0x54; |
796 |
nd->macaddr[2] = 0x00; |
797 |
nd->macaddr[3] = 0x12; |
798 |
nd->macaddr[4] = 0x34; |
799 |
nd->macaddr[5] = 0x56 + idx; |
800 |
|
801 |
if (qemu_opt_get(opts, "macaddr") && |
802 |
net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { |
803 |
qemu_error("invalid syntax for ethernet address\n");
|
804 |
return -1; |
805 |
} |
806 |
|
807 |
nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
|
808 |
if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
|
809 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
810 |
qemu_error("invalid # of vectors: %d\n", nd->nvectors);
|
811 |
return -1; |
812 |
} |
813 |
|
814 |
nd->used = 1;
|
815 |
if (vlan) {
|
816 |
nd->vlan->nb_guest_devs++; |
817 |
} |
818 |
nb_nics++; |
819 |
|
820 |
return idx;
|
821 |
} |
822 |
|
823 |
#define NET_COMMON_PARAMS_DESC \
|
824 |
{ \ |
825 |
.name = "type", \
|
826 |
.type = QEMU_OPT_STRING, \ |
827 |
.help = "net client type (nic, tap etc.)", \
|
828 |
}, { \ |
829 |
.name = "vlan", \
|
830 |
.type = QEMU_OPT_NUMBER, \ |
831 |
.help = "vlan number", \
|
832 |
}, { \ |
833 |
.name = "name", \
|
834 |
.type = QEMU_OPT_STRING, \ |
835 |
.help = "identifier for monitor commands", \
|
836 |
} |
837 |
|
838 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
839 |
Monitor *mon, |
840 |
const char *name, |
841 |
VLANState *vlan); |
842 |
|
843 |
/* magic number, but compiler will warn if too small */
|
844 |
#define NET_MAX_DESC 20 |
845 |
|
846 |
static struct { |
847 |
const char *type; |
848 |
net_client_init_func init; |
849 |
QemuOptDesc desc[NET_MAX_DESC]; |
850 |
} net_client_types[] = { |
851 |
{ |
852 |
.type = "none",
|
853 |
.desc = { |
854 |
NET_COMMON_PARAMS_DESC, |
855 |
{ /* end of list */ }
|
856 |
}, |
857 |
}, { |
858 |
.type = "nic",
|
859 |
.init = net_init_nic, |
860 |
.desc = { |
861 |
NET_COMMON_PARAMS_DESC, |
862 |
{ |
863 |
.name = "netdev",
|
864 |
.type = QEMU_OPT_STRING, |
865 |
.help = "id of -netdev to connect to",
|
866 |
}, |
867 |
{ |
868 |
.name = "macaddr",
|
869 |
.type = QEMU_OPT_STRING, |
870 |
.help = "MAC address",
|
871 |
}, { |
872 |
.name = "model",
|
873 |
.type = QEMU_OPT_STRING, |
874 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
875 |
}, { |
876 |
.name = "addr",
|
877 |
.type = QEMU_OPT_STRING, |
878 |
.help = "PCI device address",
|
879 |
}, { |
880 |
.name = "vectors",
|
881 |
.type = QEMU_OPT_NUMBER, |
882 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
883 |
}, |
884 |
{ /* end of list */ }
|
885 |
}, |
886 |
#ifdef CONFIG_SLIRP
|
887 |
}, { |
888 |
.type = "user",
|
889 |
.init = net_init_slirp, |
890 |
.desc = { |
891 |
NET_COMMON_PARAMS_DESC, |
892 |
{ |
893 |
.name = "hostname",
|
894 |
.type = QEMU_OPT_STRING, |
895 |
.help = "client hostname reported by the builtin DHCP server",
|
896 |
}, { |
897 |
.name = "restrict",
|
898 |
.type = QEMU_OPT_STRING, |
899 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
900 |
}, { |
901 |
.name = "ip",
|
902 |
.type = QEMU_OPT_STRING, |
903 |
.help = "legacy parameter, use net= instead",
|
904 |
}, { |
905 |
.name = "net",
|
906 |
.type = QEMU_OPT_STRING, |
907 |
.help = "IP address and optional netmask",
|
908 |
}, { |
909 |
.name = "host",
|
910 |
.type = QEMU_OPT_STRING, |
911 |
.help = "guest-visible address of the host",
|
912 |
}, { |
913 |
.name = "tftp",
|
914 |
.type = QEMU_OPT_STRING, |
915 |
.help = "root directory of the built-in TFTP server",
|
916 |
}, { |
917 |
.name = "bootfile",
|
918 |
.type = QEMU_OPT_STRING, |
919 |
.help = "BOOTP filename, for use with tftp=",
|
920 |
}, { |
921 |
.name = "dhcpstart",
|
922 |
.type = QEMU_OPT_STRING, |
923 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
924 |
}, { |
925 |
.name = "dns",
|
926 |
.type = QEMU_OPT_STRING, |
927 |
.help = "guest-visible address of the virtual nameserver",
|
928 |
}, { |
929 |
.name = "smb",
|
930 |
.type = QEMU_OPT_STRING, |
931 |
.help = "root directory of the built-in SMB server",
|
932 |
}, { |
933 |
.name = "smbserver",
|
934 |
.type = QEMU_OPT_STRING, |
935 |
.help = "IP address of the built-in SMB server",
|
936 |
}, { |
937 |
.name = "hostfwd",
|
938 |
.type = QEMU_OPT_STRING, |
939 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
940 |
}, { |
941 |
.name = "guestfwd",
|
942 |
.type = QEMU_OPT_STRING, |
943 |
.help = "IP address and port to forward guest TCP connections",
|
944 |
}, |
945 |
{ /* end of list */ }
|
946 |
}, |
947 |
#endif
|
948 |
}, { |
949 |
.type = "tap",
|
950 |
.init = net_init_tap, |
951 |
.desc = { |
952 |
NET_COMMON_PARAMS_DESC, |
953 |
{ |
954 |
.name = "ifname",
|
955 |
.type = QEMU_OPT_STRING, |
956 |
.help = "interface name",
|
957 |
}, |
958 |
#ifndef _WIN32
|
959 |
{ |
960 |
.name = "fd",
|
961 |
.type = QEMU_OPT_STRING, |
962 |
.help = "file descriptor of an already opened tap",
|
963 |
}, { |
964 |
.name = "script",
|
965 |
.type = QEMU_OPT_STRING, |
966 |
.help = "script to initialize the interface",
|
967 |
}, { |
968 |
.name = "downscript",
|
969 |
.type = QEMU_OPT_STRING, |
970 |
.help = "script to shut down the interface",
|
971 |
}, { |
972 |
.name = "sndbuf",
|
973 |
.type = QEMU_OPT_SIZE, |
974 |
.help = "send buffer limit"
|
975 |
}, { |
976 |
.name = "vnet_hdr",
|
977 |
.type = QEMU_OPT_BOOL, |
978 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
979 |
}, |
980 |
#endif /* _WIN32 */ |
981 |
{ /* end of list */ }
|
982 |
}, |
983 |
}, { |
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 |
{ /* end of list */ }
|
1006 |
}, |
1007 |
#ifdef CONFIG_VDE
|
1008 |
}, { |
1009 |
.type = "vde",
|
1010 |
.init = net_init_vde, |
1011 |
.desc = { |
1012 |
NET_COMMON_PARAMS_DESC, |
1013 |
{ |
1014 |
.name = "sock",
|
1015 |
.type = QEMU_OPT_STRING, |
1016 |
.help = "socket path",
|
1017 |
}, { |
1018 |
.name = "port",
|
1019 |
.type = QEMU_OPT_NUMBER, |
1020 |
.help = "port number",
|
1021 |
}, { |
1022 |
.name = "group",
|
1023 |
.type = QEMU_OPT_STRING, |
1024 |
.help = "group owner of socket",
|
1025 |
}, { |
1026 |
.name = "mode",
|
1027 |
.type = QEMU_OPT_NUMBER, |
1028 |
.help = "permissions for socket",
|
1029 |
}, |
1030 |
{ /* end of list */ }
|
1031 |
}, |
1032 |
#endif
|
1033 |
}, { |
1034 |
.type = "dump",
|
1035 |
.init = net_init_dump, |
1036 |
.desc = { |
1037 |
NET_COMMON_PARAMS_DESC, |
1038 |
{ |
1039 |
.name = "len",
|
1040 |
.type = QEMU_OPT_SIZE, |
1041 |
.help = "per-packet size limit (64k default)",
|
1042 |
}, { |
1043 |
.name = "file",
|
1044 |
.type = QEMU_OPT_STRING, |
1045 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
1046 |
}, |
1047 |
{ /* end of list */ }
|
1048 |
}, |
1049 |
}, |
1050 |
{ /* end of list */ }
|
1051 |
}; |
1052 |
|
1053 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
1054 |
{ |
1055 |
const char *name; |
1056 |
const char *type; |
1057 |
int i;
|
1058 |
|
1059 |
type = qemu_opt_get(opts, "type");
|
1060 |
|
1061 |
if (!is_netdev) {
|
1062 |
if (!type) {
|
1063 |
qemu_error("No type specified for -net\n");
|
1064 |
return -1; |
1065 |
} |
1066 |
} else {
|
1067 |
if (!type) {
|
1068 |
qemu_error("No type specified for -netdev\n");
|
1069 |
return -1; |
1070 |
} |
1071 |
|
1072 |
if (strcmp(type, "tap") != 0 && |
1073 |
#ifdef CONFIG_SLIRP
|
1074 |
strcmp(type, "user") != 0 && |
1075 |
#endif
|
1076 |
#ifdef CONFIG_VDE
|
1077 |
strcmp(type, "vde") != 0 && |
1078 |
#endif
|
1079 |
strcmp(type, "socket") != 0) { |
1080 |
qemu_error("The '%s' network backend type is not valid with -netdev\n",
|
1081 |
type); |
1082 |
return -1; |
1083 |
} |
1084 |
|
1085 |
if (qemu_opt_get(opts, "vlan")) { |
1086 |
qemu_error("The 'vlan' parameter is not valid with -netdev\n");
|
1087 |
return -1; |
1088 |
} |
1089 |
if (qemu_opt_get(opts, "name")) { |
1090 |
qemu_error("The 'name' parameter is not valid with -netdev\n");
|
1091 |
return -1; |
1092 |
} |
1093 |
if (!qemu_opts_id(opts)) {
|
1094 |
qemu_error("The id= parameter is required with -netdev\n");
|
1095 |
return -1; |
1096 |
} |
1097 |
} |
1098 |
|
1099 |
name = qemu_opts_id(opts); |
1100 |
if (!name) {
|
1101 |
name = qemu_opt_get(opts, "name");
|
1102 |
} |
1103 |
|
1104 |
for (i = 0; net_client_types[i].type != NULL; i++) { |
1105 |
if (!strcmp(net_client_types[i].type, type)) {
|
1106 |
VLANState *vlan = NULL;
|
1107 |
|
1108 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
1109 |
return -1; |
1110 |
} |
1111 |
|
1112 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
1113 |
* netdev= parameter. */
|
1114 |
if (!(is_netdev ||
|
1115 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
1116 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
1117 |
} |
1118 |
|
1119 |
if (net_client_types[i].init) {
|
1120 |
return net_client_types[i].init(opts, mon, name, vlan);
|
1121 |
} else {
|
1122 |
return 0; |
1123 |
} |
1124 |
} |
1125 |
} |
1126 |
|
1127 |
qemu_error("Invalid -net type '%s'\n", type);
|
1128 |
return -1; |
1129 |
} |
1130 |
|
1131 |
static int net_host_check_device(const char *device) |
1132 |
{ |
1133 |
int i;
|
1134 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
1135 |
#ifdef CONFIG_SLIRP
|
1136 |
,"user"
|
1137 |
#endif
|
1138 |
#ifdef CONFIG_VDE
|
1139 |
,"vde"
|
1140 |
#endif
|
1141 |
}; |
1142 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
1143 |
if (!strncmp(valid_param_list[i], device,
|
1144 |
strlen(valid_param_list[i]))) |
1145 |
return 1; |
1146 |
} |
1147 |
|
1148 |
return 0; |
1149 |
} |
1150 |
|
1151 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
1152 |
{ |
1153 |
const char *device = qdict_get_str(qdict, "device"); |
1154 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
1155 |
QemuOpts *opts; |
1156 |
|
1157 |
if (!net_host_check_device(device)) {
|
1158 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
1159 |
return;
|
1160 |
} |
1161 |
|
1162 |
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
1163 |
if (!opts) {
|
1164 |
monitor_printf(mon, "parsing network options '%s' failed\n",
|
1165 |
opts_str ? opts_str : "");
|
1166 |
return;
|
1167 |
} |
1168 |
|
1169 |
qemu_opt_set(opts, "type", device);
|
1170 |
|
1171 |
if (net_client_init(mon, opts, 0) < 0) { |
1172 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
1173 |
} |
1174 |
} |
1175 |
|
1176 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
1177 |
{ |
1178 |
VLANClientState *vc; |
1179 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
1180 |
const char *device = qdict_get_str(qdict, "device"); |
1181 |
|
1182 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
1183 |
if (!vc) {
|
1184 |
return;
|
1185 |
} |
1186 |
if (!net_host_check_device(vc->model)) {
|
1187 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
1188 |
return;
|
1189 |
} |
1190 |
qemu_del_vlan_client(vc); |
1191 |
} |
1192 |
|
1193 |
void net_set_boot_mask(int net_boot_mask) |
1194 |
{ |
1195 |
int i;
|
1196 |
|
1197 |
/* Only the first four NICs may be bootable */
|
1198 |
net_boot_mask = net_boot_mask & 0xF;
|
1199 |
|
1200 |
for (i = 0; i < nb_nics; i++) { |
1201 |
if (net_boot_mask & (1 << i)) { |
1202 |
nd_table[i].bootable = 1;
|
1203 |
net_boot_mask &= ~(1 << i);
|
1204 |
} |
1205 |
} |
1206 |
|
1207 |
if (net_boot_mask) {
|
1208 |
fprintf(stderr, "Cannot boot from non-existent NIC\n");
|
1209 |
exit(1);
|
1210 |
} |
1211 |
} |
1212 |
|
1213 |
void do_info_network(Monitor *mon)
|
1214 |
{ |
1215 |
VLANState *vlan; |
1216 |
|
1217 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1218 |
VLANClientState *vc; |
1219 |
|
1220 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
1221 |
|
1222 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
1223 |
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
1224 |
} |
1225 |
} |
1226 |
} |
1227 |
|
1228 |
void do_set_link(Monitor *mon, const QDict *qdict) |
1229 |
{ |
1230 |
VLANState *vlan; |
1231 |
VLANClientState *vc = NULL;
|
1232 |
const char *name = qdict_get_str(qdict, "name"); |
1233 |
const char *up_or_down = qdict_get_str(qdict, "up_or_down"); |
1234 |
|
1235 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1236 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
1237 |
if (strcmp(vc->name, name) == 0) { |
1238 |
goto done;
|
1239 |
} |
1240 |
} |
1241 |
} |
1242 |
done:
|
1243 |
|
1244 |
if (!vc) {
|
1245 |
monitor_printf(mon, "could not find network device '%s'\n", name);
|
1246 |
return;
|
1247 |
} |
1248 |
|
1249 |
if (strcmp(up_or_down, "up") == 0) |
1250 |
vc->link_down = 0;
|
1251 |
else if (strcmp(up_or_down, "down") == 0) |
1252 |
vc->link_down = 1;
|
1253 |
else
|
1254 |
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
1255 |
"valid\n", up_or_down);
|
1256 |
|
1257 |
if (vc->info->link_status_changed) {
|
1258 |
vc->info->link_status_changed(vc); |
1259 |
} |
1260 |
} |
1261 |
|
1262 |
void net_cleanup(void) |
1263 |
{ |
1264 |
VLANState *vlan; |
1265 |
VLANClientState *vc, *next_vc; |
1266 |
|
1267 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1268 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { |
1269 |
qemu_del_vlan_client(vc); |
1270 |
} |
1271 |
} |
1272 |
|
1273 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { |
1274 |
qemu_del_vlan_client(vc); |
1275 |
} |
1276 |
} |
1277 |
|
1278 |
static void net_check_clients(void) |
1279 |
{ |
1280 |
VLANState *vlan; |
1281 |
|
1282 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
1283 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
1284 |
continue;
|
1285 |
if (vlan->nb_guest_devs == 0) |
1286 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
1287 |
if (vlan->nb_host_devs == 0) |
1288 |
fprintf(stderr, |
1289 |
"Warning: vlan %d is not connected to host network\n",
|
1290 |
vlan->id); |
1291 |
} |
1292 |
} |
1293 |
|
1294 |
static int net_init_client(QemuOpts *opts, void *dummy) |
1295 |
{ |
1296 |
if (net_client_init(NULL, opts, 0) < 0) |
1297 |
return -1; |
1298 |
return 0; |
1299 |
} |
1300 |
|
1301 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
1302 |
{ |
1303 |
return net_client_init(NULL, opts, 1); |
1304 |
} |
1305 |
|
1306 |
int net_init_clients(void) |
1307 |
{ |
1308 |
if (default_net) {
|
1309 |
/* if no clients, we use a default config */
|
1310 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); |
1311 |
#ifdef CONFIG_SLIRP
|
1312 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); |
1313 |
#endif
|
1314 |
} |
1315 |
|
1316 |
QTAILQ_INIT(&vlans); |
1317 |
QTAILQ_INIT(&non_vlan_clients); |
1318 |
|
1319 |
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) |
1320 |
return -1; |
1321 |
|
1322 |
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { |
1323 |
return -1; |
1324 |
} |
1325 |
|
1326 |
net_check_clients(); |
1327 |
|
1328 |
return 0; |
1329 |
} |
1330 |
|
1331 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
1332 |
{ |
1333 |
#if defined(CONFIG_SLIRP)
|
1334 |
int ret;
|
1335 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
1336 |
return ret;
|
1337 |
} |
1338 |
#endif
|
1339 |
|
1340 |
if (!qemu_opts_parse(opts_list, optarg, "type")) { |
1341 |
return -1; |
1342 |
} |
1343 |
|
1344 |
default_net = 0;
|
1345 |
return 0; |
1346 |
} |