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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 <unistd.h> |
25 |
#include <fcntl.h> |
26 |
#include <signal.h> |
27 |
#include <time.h> |
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#include <errno.h> |
29 |
#include <sys/time.h> |
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#include <zlib.h> |
31 |
|
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/* Needed early for CONFIG_BSD etc. */
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#include "config-host.h" |
34 |
|
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#ifndef _WIN32
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#include <sys/times.h> |
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#include <sys/wait.h> |
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#include <termios.h> |
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#include <sys/mman.h> |
40 |
#include <sys/ioctl.h> |
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#include <sys/resource.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <net/if.h> |
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#ifdef __NetBSD__
|
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#include <net/if_tap.h> |
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#endif
|
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#ifdef __linux__
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#include <linux/if_tun.h> |
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#endif
|
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#include <arpa/inet.h> |
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#include <dirent.h> |
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#include <netdb.h> |
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#include <sys/select.h> |
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#ifdef CONFIG_BSD
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#include <sys/stat.h> |
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#if defined(__FreeBSD__) || defined(__DragonFly__)
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#include <libutil.h> |
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#else
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#include <util.h> |
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#endif
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#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
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#include <freebsd/stdlib.h> |
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#else
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#ifdef __linux__
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#include <pty.h> |
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#include <malloc.h> |
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#include <linux/rtc.h> |
69 |
|
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/* For the benefit of older linux systems which don't supply it,
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we use a local copy of hpet.h. */
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/* #include <linux/hpet.h> */
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#include "hpet.h" |
74 |
|
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#include <linux/ppdev.h> |
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#include <linux/parport.h> |
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#endif
|
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#ifdef __sun__
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#include <sys/stat.h> |
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#include <sys/ethernet.h> |
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#include <sys/sockio.h> |
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#include <netinet/arp.h> |
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#include <netinet/in.h> |
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#include <netinet/in_systm.h> |
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#include <netinet/ip.h> |
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#include <netinet/ip_icmp.h> // must come after ip.h |
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#include <netinet/udp.h> |
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#include <netinet/tcp.h> |
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#include <net/if.h> |
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#include <syslog.h> |
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#include <stropts.h> |
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#endif
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#endif
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#endif
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|
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#if defined(__OpenBSD__)
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#include <util.h> |
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#endif
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|
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#if defined(CONFIG_VDE)
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#include <libvdeplug.h> |
102 |
#endif
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|
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#include "qemu-common.h" |
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#include "net.h" |
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#include "monitor.h" |
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#include "sysemu.h" |
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#include "qemu-timer.h" |
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#include "qemu-char.h" |
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#include "audio/audio.h" |
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#include "qemu_socket.h" |
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#include "qemu-log.h" |
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#include "qemu-config.h" |
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|
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#include "slirp/libslirp.h" |
116 |
|
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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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/***********************************************************/
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/* network device redirectors */
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|
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#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
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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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150 |
|
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static int parse_macaddr(uint8_t *macaddr, const char *p) |
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{ |
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int i;
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char *last_char;
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long int offset; |
156 |
|
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errno = 0;
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offset = strtol(p, &last_char, 0);
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if (0 == errno && '\0' == *last_char && |
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offset >= 0 && offset <= 0xFFFFFF) { |
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macaddr[3] = (offset & 0xFF0000) >> 16; |
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macaddr[4] = (offset & 0xFF00) >> 8; |
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macaddr[5] = offset & 0xFF; |
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return 0; |
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} else {
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for(i = 0; i < 6; i++) { |
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macaddr[i] = strtol(p, (char **)&p, 16); |
168 |
if (i == 5) { |
169 |
if (*p != '\0') |
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return -1; |
171 |
} else {
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if (*p != ':' && *p != '-') |
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return -1; |
174 |
p++; |
175 |
} |
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} |
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return 0; |
178 |
} |
179 |
|
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return -1; |
181 |
} |
182 |
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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); |
189 |
if (!p1)
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return -1; |
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len = p1 - p; |
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p1++; |
193 |
if (buf_size > 0) { |
194 |
if (len > buf_size - 1) |
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len = buf_size - 1;
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memcpy(buf, p, len); |
197 |
buf[len] = '\0';
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} |
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*pp = p1; |
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return 0; |
201 |
} |
202 |
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int parse_host_src_port(struct sockaddr_in *haddr, |
204 |
struct sockaddr_in *saddr,
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const char *input_str) |
206 |
{ |
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char *str = 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,','))) |
219 |
*ptr = '\0';
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if ((src_str = strchr(input_str,'@'))) { |
222 |
*src_str = '\0';
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src_str++; |
224 |
} |
225 |
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if (parse_host_port(haddr, host_str) < 0) |
227 |
goto fail;
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228 |
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src_str2 = src_str; |
230 |
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); |
238 |
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fail:
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free(str); |
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return -1; |
242 |
} |
243 |
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int parse_host_port(struct sockaddr_in *saddr, const char *str) |
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{ |
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char buf[512]; |
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struct hostent *he;
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const char *p, *r; |
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int port;
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p = str; |
252 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
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return -1; |
254 |
saddr->sin_family = AF_INET; |
255 |
if (buf[0] == '\0') { |
256 |
saddr->sin_addr.s_addr = 0;
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} else {
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if (qemu_isdigit(buf[0])) { |
259 |
if (!inet_aton(buf, &saddr->sin_addr))
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return -1; |
261 |
} else {
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if ((he = gethostbyname(buf)) == NULL) |
263 |
return - 1; |
264 |
saddr->sin_addr = *(struct in_addr *)he->h_addr;
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} |
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} |
267 |
port = strtol(p, (char **)&r, 0); |
268 |
if (r == p)
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return -1; |
270 |
saddr->sin_port = htons(port); |
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return 0; |
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} |
273 |
|
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void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
275 |
{ |
276 |
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]); |
281 |
} |
282 |
|
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void qemu_macaddr_default_if_unset(MACAddr *macaddr)
|
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{ |
285 |
static int index = 0; |
286 |
static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
287 |
|
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if (memcmp(macaddr, &zero, sizeof(zero)) != 0) |
289 |
return;
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macaddr->a[0] = 0x52; |
291 |
macaddr->a[1] = 0x54; |
292 |
macaddr->a[2] = 0x00; |
293 |
macaddr->a[3] = 0x12; |
294 |
macaddr->a[4] = 0x34; |
295 |
macaddr->a[5] = 0x56 + index++; |
296 |
} |
297 |
|
298 |
static char *assign_name(VLANClientState *vc1, const char *model) |
299 |
{ |
300 |
VLANState *vlan; |
301 |
char buf[256]; |
302 |
int id = 0; |
303 |
|
304 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
305 |
VLANClientState *vc; |
306 |
|
307 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
308 |
if (vc != vc1 && strcmp(vc->model, model) == 0) { |
309 |
id++; |
310 |
} |
311 |
} |
312 |
} |
313 |
|
314 |
snprintf(buf, sizeof(buf), "%s.%d", model, id); |
315 |
|
316 |
return qemu_strdup(buf);
|
317 |
} |
318 |
|
319 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
320 |
const uint8_t *data,
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321 |
size_t size, |
322 |
void *opaque);
|
323 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
324 |
const struct iovec *iov, |
325 |
int iovcnt,
|
326 |
void *opaque);
|
327 |
|
328 |
VLANClientState *qemu_new_vlan_client(VLANState *vlan, |
329 |
VLANClientState *peer, |
330 |
const char *model, |
331 |
const char *name, |
332 |
NetCanReceive *can_receive, |
333 |
NetReceive *receive, |
334 |
NetReceiveIOV *receive_iov, |
335 |
NetCleanup *cleanup, |
336 |
void *opaque)
|
337 |
{ |
338 |
VLANClientState *vc; |
339 |
|
340 |
vc = qemu_mallocz(sizeof(VLANClientState));
|
341 |
|
342 |
vc->model = qemu_strdup(model); |
343 |
if (name)
|
344 |
vc->name = qemu_strdup(name); |
345 |
else
|
346 |
vc->name = assign_name(vc, model); |
347 |
vc->can_receive = can_receive; |
348 |
vc->receive = receive; |
349 |
vc->receive_iov = receive_iov; |
350 |
vc->cleanup = cleanup; |
351 |
vc->opaque = opaque; |
352 |
|
353 |
if (vlan) {
|
354 |
assert(!peer); |
355 |
vc->vlan = vlan; |
356 |
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
357 |
} else {
|
358 |
if (peer) {
|
359 |
vc->peer = peer; |
360 |
peer->peer = vc; |
361 |
} |
362 |
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
363 |
|
364 |
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
365 |
qemu_deliver_packet_iov, |
366 |
vc); |
367 |
} |
368 |
|
369 |
return vc;
|
370 |
} |
371 |
|
372 |
void qemu_del_vlan_client(VLANClientState *vc)
|
373 |
{ |
374 |
if (vc->vlan) {
|
375 |
QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
376 |
} else {
|
377 |
if (vc->send_queue) {
|
378 |
qemu_del_net_queue(vc->send_queue); |
379 |
} |
380 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
381 |
if (vc->peer) {
|
382 |
vc->peer->peer = NULL;
|
383 |
} |
384 |
} |
385 |
|
386 |
if (vc->cleanup) {
|
387 |
vc->cleanup(vc); |
388 |
} |
389 |
|
390 |
qemu_free(vc->name); |
391 |
qemu_free(vc->model); |
392 |
qemu_free(vc); |
393 |
} |
394 |
|
395 |
VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
|
396 |
{ |
397 |
VLANClientState *vc; |
398 |
|
399 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
400 |
if (vc->opaque == opaque) {
|
401 |
return vc;
|
402 |
} |
403 |
} |
404 |
|
405 |
return NULL; |
406 |
} |
407 |
|
408 |
static VLANClientState *
|
409 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
410 |
const char *client_str) |
411 |
{ |
412 |
VLANState *vlan; |
413 |
VLANClientState *vc; |
414 |
|
415 |
vlan = qemu_find_vlan(vlan_id, 0);
|
416 |
if (!vlan) {
|
417 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
418 |
return NULL; |
419 |
} |
420 |
|
421 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
422 |
if (!strcmp(vc->name, client_str)) {
|
423 |
break;
|
424 |
} |
425 |
} |
426 |
if (!vc) {
|
427 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
428 |
client_str, vlan_id); |
429 |
} |
430 |
|
431 |
return vc;
|
432 |
} |
433 |
|
434 |
int qemu_can_send_packet(VLANClientState *sender)
|
435 |
{ |
436 |
VLANState *vlan = sender->vlan; |
437 |
VLANClientState *vc; |
438 |
|
439 |
if (sender->peer) {
|
440 |
if (!sender->peer->can_receive ||
|
441 |
sender->peer->can_receive(sender->peer)) { |
442 |
return 1; |
443 |
} else {
|
444 |
return 0; |
445 |
} |
446 |
} |
447 |
|
448 |
if (!sender->vlan) {
|
449 |
return 1; |
450 |
} |
451 |
|
452 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
453 |
if (vc == sender) {
|
454 |
continue;
|
455 |
} |
456 |
|
457 |
/* no can_receive() handler, they can always receive */
|
458 |
if (!vc->can_receive || vc->can_receive(vc)) {
|
459 |
return 1; |
460 |
} |
461 |
} |
462 |
return 0; |
463 |
} |
464 |
|
465 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
466 |
const uint8_t *data,
|
467 |
size_t size, |
468 |
void *opaque)
|
469 |
{ |
470 |
VLANClientState *vc = opaque; |
471 |
|
472 |
if (vc->link_down) {
|
473 |
return size;
|
474 |
} |
475 |
|
476 |
return vc->receive(vc, data, size);
|
477 |
} |
478 |
|
479 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
480 |
const uint8_t *buf,
|
481 |
size_t size, |
482 |
void *opaque)
|
483 |
{ |
484 |
VLANState *vlan = opaque; |
485 |
VLANClientState *vc; |
486 |
int ret = -1; |
487 |
|
488 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
489 |
ssize_t len; |
490 |
|
491 |
if (vc == sender) {
|
492 |
continue;
|
493 |
} |
494 |
|
495 |
if (vc->link_down) {
|
496 |
ret = size; |
497 |
continue;
|
498 |
} |
499 |
|
500 |
len = vc->receive(vc, buf, size); |
501 |
|
502 |
ret = (ret >= 0) ? ret : len;
|
503 |
} |
504 |
|
505 |
return ret;
|
506 |
} |
507 |
|
508 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
509 |
{ |
510 |
NetQueue *queue; |
511 |
|
512 |
if (!vc->peer && !vc->vlan) {
|
513 |
return;
|
514 |
} |
515 |
|
516 |
if (vc->peer) {
|
517 |
queue = vc->peer->send_queue; |
518 |
} else {
|
519 |
queue = vc->vlan->send_queue; |
520 |
} |
521 |
|
522 |
qemu_net_queue_purge(queue, vc); |
523 |
} |
524 |
|
525 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
526 |
{ |
527 |
NetQueue *queue; |
528 |
|
529 |
if (vc->vlan) {
|
530 |
queue = vc->vlan->send_queue; |
531 |
} else {
|
532 |
queue = vc->send_queue; |
533 |
} |
534 |
|
535 |
qemu_net_queue_flush(queue); |
536 |
} |
537 |
|
538 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
539 |
const uint8_t *buf, int size, |
540 |
NetPacketSent *sent_cb) |
541 |
{ |
542 |
NetQueue *queue; |
543 |
|
544 |
#ifdef DEBUG_NET
|
545 |
printf("qemu_send_packet_async:\n");
|
546 |
hex_dump(stdout, buf, size); |
547 |
#endif
|
548 |
|
549 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
550 |
return size;
|
551 |
} |
552 |
|
553 |
if (sender->peer) {
|
554 |
queue = sender->peer->send_queue; |
555 |
} else {
|
556 |
queue = sender->vlan->send_queue; |
557 |
} |
558 |
|
559 |
return qemu_net_queue_send(queue, sender, buf, size, sent_cb);
|
560 |
} |
561 |
|
562 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
563 |
{ |
564 |
qemu_send_packet_async(vc, buf, size, NULL);
|
565 |
} |
566 |
|
567 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
568 |
int iovcnt)
|
569 |
{ |
570 |
uint8_t buffer[4096];
|
571 |
size_t offset = 0;
|
572 |
int i;
|
573 |
|
574 |
for (i = 0; i < iovcnt; i++) { |
575 |
size_t len; |
576 |
|
577 |
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
578 |
memcpy(buffer + offset, iov[i].iov_base, len); |
579 |
offset += len; |
580 |
} |
581 |
|
582 |
return vc->receive(vc, buffer, offset);
|
583 |
} |
584 |
|
585 |
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
586 |
{ |
587 |
size_t offset = 0;
|
588 |
int i;
|
589 |
|
590 |
for (i = 0; i < iovcnt; i++) |
591 |
offset += iov[i].iov_len; |
592 |
return offset;
|
593 |
} |
594 |
|
595 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
596 |
const struct iovec *iov, |
597 |
int iovcnt,
|
598 |
void *opaque)
|
599 |
{ |
600 |
VLANClientState *vc = opaque; |
601 |
|
602 |
if (vc->link_down) {
|
603 |
return calc_iov_length(iov, iovcnt);
|
604 |
} |
605 |
|
606 |
if (vc->receive_iov) {
|
607 |
return vc->receive_iov(vc, iov, iovcnt);
|
608 |
} else {
|
609 |
return vc_sendv_compat(vc, iov, iovcnt);
|
610 |
} |
611 |
} |
612 |
|
613 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
614 |
const struct iovec *iov, |
615 |
int iovcnt,
|
616 |
void *opaque)
|
617 |
{ |
618 |
VLANState *vlan = opaque; |
619 |
VLANClientState *vc; |
620 |
ssize_t ret = -1;
|
621 |
|
622 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
623 |
ssize_t len; |
624 |
|
625 |
if (vc == sender) {
|
626 |
continue;
|
627 |
} |
628 |
|
629 |
if (vc->link_down) {
|
630 |
ret = calc_iov_length(iov, iovcnt); |
631 |
continue;
|
632 |
} |
633 |
|
634 |
if (vc->receive_iov) {
|
635 |
len = vc->receive_iov(vc, iov, iovcnt); |
636 |
} else {
|
637 |
len = vc_sendv_compat(vc, iov, iovcnt); |
638 |
} |
639 |
|
640 |
ret = (ret >= 0) ? ret : len;
|
641 |
} |
642 |
|
643 |
return ret;
|
644 |
} |
645 |
|
646 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
647 |
const struct iovec *iov, int iovcnt, |
648 |
NetPacketSent *sent_cb) |
649 |
{ |
650 |
NetQueue *queue; |
651 |
|
652 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
653 |
return calc_iov_length(iov, iovcnt);
|
654 |
} |
655 |
|
656 |
if (sender->peer) {
|
657 |
queue = sender->peer->send_queue; |
658 |
} else {
|
659 |
queue = sender->vlan->send_queue; |
660 |
} |
661 |
|
662 |
return qemu_net_queue_send_iov(queue, sender, iov, iovcnt, sent_cb);
|
663 |
} |
664 |
|
665 |
ssize_t |
666 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
667 |
{ |
668 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
669 |
} |
670 |
|
671 |
#if defined(CONFIG_SLIRP)
|
672 |
|
673 |
/* slirp network adapter */
|
674 |
|
675 |
#define SLIRP_CFG_HOSTFWD 1 |
676 |
#define SLIRP_CFG_LEGACY 2 |
677 |
|
678 |
struct slirp_config_str {
|
679 |
struct slirp_config_str *next;
|
680 |
int flags;
|
681 |
char str[1024]; |
682 |
int legacy_format;
|
683 |
}; |
684 |
|
685 |
typedef struct SlirpState { |
686 |
QTAILQ_ENTRY(SlirpState) entry; |
687 |
VLANClientState *vc; |
688 |
Slirp *slirp; |
689 |
#ifndef _WIN32
|
690 |
char smb_dir[128]; |
691 |
#endif
|
692 |
} SlirpState; |
693 |
|
694 |
static struct slirp_config_str *slirp_configs; |
695 |
const char *legacy_tftp_prefix; |
696 |
const char *legacy_bootp_filename; |
697 |
static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
|
698 |
QTAILQ_HEAD_INITIALIZER(slirp_stacks); |
699 |
|
700 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
701 |
int legacy_format);
|
702 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
703 |
int legacy_format);
|
704 |
|
705 |
#ifndef _WIN32
|
706 |
static const char *legacy_smb_export; |
707 |
|
708 |
static int slirp_smb(SlirpState *s, const char *exported_dir, |
709 |
struct in_addr vserver_addr);
|
710 |
static void slirp_smb_cleanup(SlirpState *s); |
711 |
#else
|
712 |
static inline void slirp_smb_cleanup(SlirpState *s) { } |
713 |
#endif
|
714 |
|
715 |
int slirp_can_output(void *opaque) |
716 |
{ |
717 |
SlirpState *s = opaque; |
718 |
|
719 |
return qemu_can_send_packet(s->vc);
|
720 |
} |
721 |
|
722 |
void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) |
723 |
{ |
724 |
SlirpState *s = opaque; |
725 |
|
726 |
#ifdef DEBUG_SLIRP
|
727 |
printf("slirp output:\n");
|
728 |
hex_dump(stdout, pkt, pkt_len); |
729 |
#endif
|
730 |
qemu_send_packet(s->vc, pkt, pkt_len); |
731 |
} |
732 |
|
733 |
static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
734 |
{ |
735 |
SlirpState *s = vc->opaque; |
736 |
|
737 |
#ifdef DEBUG_SLIRP
|
738 |
printf("slirp input:\n");
|
739 |
hex_dump(stdout, buf, size); |
740 |
#endif
|
741 |
slirp_input(s->slirp, buf, size); |
742 |
return size;
|
743 |
} |
744 |
|
745 |
static void net_slirp_cleanup(VLANClientState *vc) |
746 |
{ |
747 |
SlirpState *s = vc->opaque; |
748 |
|
749 |
slirp_cleanup(s->slirp); |
750 |
slirp_smb_cleanup(s); |
751 |
QTAILQ_REMOVE(&slirp_stacks, s, entry); |
752 |
qemu_free(s); |
753 |
} |
754 |
|
755 |
static int net_slirp_init(VLANState *vlan, const char *model, |
756 |
const char *name, int restricted, |
757 |
const char *vnetwork, const char *vhost, |
758 |
const char *vhostname, const char *tftp_export, |
759 |
const char *bootfile, const char *vdhcp_start, |
760 |
const char *vnameserver, const char *smb_export, |
761 |
const char *vsmbserver) |
762 |
{ |
763 |
/* default settings according to historic slirp */
|
764 |
struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ |
765 |
struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ |
766 |
struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ |
767 |
struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ |
768 |
struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ |
769 |
#ifndef _WIN32
|
770 |
struct in_addr smbsrv = { .s_addr = 0 }; |
771 |
#endif
|
772 |
SlirpState *s; |
773 |
char buf[20]; |
774 |
uint32_t addr; |
775 |
int shift;
|
776 |
char *end;
|
777 |
struct slirp_config_str *config;
|
778 |
|
779 |
if (!tftp_export) {
|
780 |
tftp_export = legacy_tftp_prefix; |
781 |
} |
782 |
if (!bootfile) {
|
783 |
bootfile = legacy_bootp_filename; |
784 |
} |
785 |
|
786 |
if (vnetwork) {
|
787 |
if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { |
788 |
if (!inet_aton(vnetwork, &net)) {
|
789 |
return -1; |
790 |
} |
791 |
addr = ntohl(net.s_addr); |
792 |
if (!(addr & 0x80000000)) { |
793 |
mask.s_addr = htonl(0xff000000); /* class A */ |
794 |
} else if ((addr & 0xfff00000) == 0xac100000) { |
795 |
mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ |
796 |
} else if ((addr & 0xc0000000) == 0x80000000) { |
797 |
mask.s_addr = htonl(0xffff0000); /* class B */ |
798 |
} else if ((addr & 0xffff0000) == 0xc0a80000) { |
799 |
mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ |
800 |
} else if ((addr & 0xffff0000) == 0xc6120000) { |
801 |
mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ |
802 |
} else if ((addr & 0xe0000000) == 0xe0000000) { |
803 |
mask.s_addr = htonl(0xffffff00); /* class C */ |
804 |
} else {
|
805 |
mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ |
806 |
} |
807 |
} else {
|
808 |
if (!inet_aton(buf, &net)) {
|
809 |
return -1; |
810 |
} |
811 |
shift = strtol(vnetwork, &end, 10);
|
812 |
if (*end != '\0') { |
813 |
if (!inet_aton(vnetwork, &mask)) {
|
814 |
return -1; |
815 |
} |
816 |
} else if (shift < 4 || shift > 32) { |
817 |
return -1; |
818 |
} else {
|
819 |
mask.s_addr = htonl(0xffffffff << (32 - shift)); |
820 |
} |
821 |
} |
822 |
net.s_addr &= mask.s_addr; |
823 |
host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
|
824 |
dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
|
825 |
dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
|
826 |
} |
827 |
|
828 |
if (vhost && !inet_aton(vhost, &host)) {
|
829 |
return -1; |
830 |
} |
831 |
if ((host.s_addr & mask.s_addr) != net.s_addr) {
|
832 |
return -1; |
833 |
} |
834 |
|
835 |
if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
|
836 |
return -1; |
837 |
} |
838 |
if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
|
839 |
dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { |
840 |
return -1; |
841 |
} |
842 |
|
843 |
if (vnameserver && !inet_aton(vnameserver, &dns)) {
|
844 |
return -1; |
845 |
} |
846 |
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
|
847 |
dns.s_addr == host.s_addr) { |
848 |
return -1; |
849 |
} |
850 |
|
851 |
#ifndef _WIN32
|
852 |
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
853 |
return -1; |
854 |
} |
855 |
#endif
|
856 |
|
857 |
s = qemu_mallocz(sizeof(SlirpState));
|
858 |
s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
859 |
tftp_export, bootfile, dhcp, dns, s); |
860 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
861 |
|
862 |
for (config = slirp_configs; config; config = config->next) {
|
863 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
864 |
if (slirp_hostfwd(s, config->str,
|
865 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
866 |
return -1; |
867 |
} else {
|
868 |
if (slirp_guestfwd(s, config->str,
|
869 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
870 |
return -1; |
871 |
} |
872 |
} |
873 |
#ifndef _WIN32
|
874 |
if (!smb_export) {
|
875 |
smb_export = legacy_smb_export; |
876 |
} |
877 |
if (smb_export) {
|
878 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
879 |
return -1; |
880 |
} |
881 |
#endif
|
882 |
|
883 |
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL, |
884 |
slirp_receive, NULL,
|
885 |
net_slirp_cleanup, s); |
886 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
887 |
"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); |
888 |
return 0; |
889 |
} |
890 |
|
891 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
892 |
const char *stack) |
893 |
{ |
894 |
VLANClientState *vc; |
895 |
|
896 |
if (vlan) {
|
897 |
vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); |
898 |
if (!vc) {
|
899 |
return NULL; |
900 |
} |
901 |
if (strcmp(vc->model, "user")) { |
902 |
monitor_printf(mon, "invalid device specified\n");
|
903 |
return NULL; |
904 |
} |
905 |
return vc->opaque;
|
906 |
} else {
|
907 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
908 |
monitor_printf(mon, "user mode network stack not in use\n");
|
909 |
return NULL; |
910 |
} |
911 |
return QTAILQ_FIRST(&slirp_stacks);
|
912 |
} |
913 |
} |
914 |
|
915 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
916 |
{ |
917 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
918 |
int host_port;
|
919 |
char buf[256] = ""; |
920 |
const char *src_str, *p; |
921 |
SlirpState *s; |
922 |
int is_udp = 0; |
923 |
int err;
|
924 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
925 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
926 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
927 |
|
928 |
if (arg2) {
|
929 |
s = slirp_lookup(mon, arg1, arg2); |
930 |
src_str = arg3; |
931 |
} else {
|
932 |
s = slirp_lookup(mon, NULL, NULL); |
933 |
src_str = arg1; |
934 |
} |
935 |
if (!s) {
|
936 |
return;
|
937 |
} |
938 |
|
939 |
if (!src_str || !src_str[0]) |
940 |
goto fail_syntax;
|
941 |
|
942 |
p = src_str; |
943 |
get_str_sep(buf, sizeof(buf), &p, ':'); |
944 |
|
945 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
946 |
is_udp = 0;
|
947 |
} else if (!strcmp(buf, "udp")) { |
948 |
is_udp = 1;
|
949 |
} else {
|
950 |
goto fail_syntax;
|
951 |
} |
952 |
|
953 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
954 |
goto fail_syntax;
|
955 |
} |
956 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
957 |
goto fail_syntax;
|
958 |
} |
959 |
|
960 |
host_port = atoi(p); |
961 |
|
962 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
963 |
host_addr, host_port); |
964 |
|
965 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
966 |
err ? "removed" : "not found"); |
967 |
return;
|
968 |
|
969 |
fail_syntax:
|
970 |
monitor_printf(mon, "invalid format\n");
|
971 |
} |
972 |
|
973 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
974 |
int legacy_format)
|
975 |
{ |
976 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
977 |
struct in_addr guest_addr = { .s_addr = 0 }; |
978 |
int host_port, guest_port;
|
979 |
const char *p; |
980 |
char buf[256]; |
981 |
int is_udp;
|
982 |
char *end;
|
983 |
|
984 |
p = redir_str; |
985 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
986 |
goto fail_syntax;
|
987 |
} |
988 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
989 |
is_udp = 0;
|
990 |
} else if (!strcmp(buf, "udp")) { |
991 |
is_udp = 1;
|
992 |
} else {
|
993 |
goto fail_syntax;
|
994 |
} |
995 |
|
996 |
if (!legacy_format) {
|
997 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
998 |
goto fail_syntax;
|
999 |
} |
1000 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
1001 |
goto fail_syntax;
|
1002 |
} |
1003 |
} |
1004 |
|
1005 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
1006 |
goto fail_syntax;
|
1007 |
} |
1008 |
host_port = strtol(buf, &end, 0);
|
1009 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
1010 |
goto fail_syntax;
|
1011 |
} |
1012 |
|
1013 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
1014 |
goto fail_syntax;
|
1015 |
} |
1016 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
1017 |
goto fail_syntax;
|
1018 |
} |
1019 |
|
1020 |
guest_port = strtol(p, &end, 0);
|
1021 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
1022 |
goto fail_syntax;
|
1023 |
} |
1024 |
|
1025 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
1026 |
guest_port) < 0) {
|
1027 |
qemu_error("could not set up host forwarding rule '%s'\n",
|
1028 |
redir_str); |
1029 |
return -1; |
1030 |
} |
1031 |
return 0; |
1032 |
|
1033 |
fail_syntax:
|
1034 |
qemu_error("invalid host forwarding rule '%s'\n", redir_str);
|
1035 |
return -1; |
1036 |
} |
1037 |
|
1038 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
1039 |
{ |
1040 |
const char *redir_str; |
1041 |
SlirpState *s; |
1042 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
1043 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
1044 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
1045 |
|
1046 |
if (arg2) {
|
1047 |
s = slirp_lookup(mon, arg1, arg2); |
1048 |
redir_str = arg3; |
1049 |
} else {
|
1050 |
s = slirp_lookup(mon, NULL, NULL); |
1051 |
redir_str = arg1; |
1052 |
} |
1053 |
if (s) {
|
1054 |
slirp_hostfwd(s, redir_str, 0);
|
1055 |
} |
1056 |
|
1057 |
} |
1058 |
|
1059 |
int net_slirp_redir(const char *redir_str) |
1060 |
{ |
1061 |
struct slirp_config_str *config;
|
1062 |
|
1063 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
1064 |
config = qemu_malloc(sizeof(*config));
|
1065 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
1066 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
1067 |
config->next = slirp_configs; |
1068 |
slirp_configs = config; |
1069 |
return 0; |
1070 |
} |
1071 |
|
1072 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
1073 |
} |
1074 |
|
1075 |
#ifndef _WIN32
|
1076 |
|
1077 |
/* automatic user mode samba server configuration */
|
1078 |
static void slirp_smb_cleanup(SlirpState *s) |
1079 |
{ |
1080 |
char cmd[128]; |
1081 |
|
1082 |
if (s->smb_dir[0] != '\0') { |
1083 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
1084 |
system(cmd); |
1085 |
s->smb_dir[0] = '\0'; |
1086 |
} |
1087 |
} |
1088 |
|
1089 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
1090 |
struct in_addr vserver_addr)
|
1091 |
{ |
1092 |
static int instance; |
1093 |
char smb_conf[128]; |
1094 |
char smb_cmdline[128]; |
1095 |
FILE *f; |
1096 |
|
1097 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
1098 |
(long)getpid(), instance++);
|
1099 |
if (mkdir(s->smb_dir, 0700) < 0) { |
1100 |
qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
|
1101 |
return -1; |
1102 |
} |
1103 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
1104 |
|
1105 |
f = fopen(smb_conf, "w");
|
1106 |
if (!f) {
|
1107 |
slirp_smb_cleanup(s); |
1108 |
qemu_error("could not create samba server configuration file '%s'\n",
|
1109 |
smb_conf); |
1110 |
return -1; |
1111 |
} |
1112 |
fprintf(f, |
1113 |
"[global]\n"
|
1114 |
"private dir=%s\n"
|
1115 |
"smb ports=0\n"
|
1116 |
"socket address=127.0.0.1\n"
|
1117 |
"pid directory=%s\n"
|
1118 |
"lock directory=%s\n"
|
1119 |
"log file=%s/log.smbd\n"
|
1120 |
"smb passwd file=%s/smbpasswd\n"
|
1121 |
"security = share\n"
|
1122 |
"[qemu]\n"
|
1123 |
"path=%s\n"
|
1124 |
"read only=no\n"
|
1125 |
"guest ok=yes\n",
|
1126 |
s->smb_dir, |
1127 |
s->smb_dir, |
1128 |
s->smb_dir, |
1129 |
s->smb_dir, |
1130 |
s->smb_dir, |
1131 |
exported_dir |
1132 |
); |
1133 |
fclose(f); |
1134 |
|
1135 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
1136 |
SMBD_COMMAND, smb_conf); |
1137 |
|
1138 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
1139 |
slirp_smb_cleanup(s); |
1140 |
qemu_error("conflicting/invalid smbserver address\n");
|
1141 |
return -1; |
1142 |
} |
1143 |
return 0; |
1144 |
} |
1145 |
|
1146 |
/* automatic user mode samba server configuration (legacy interface) */
|
1147 |
int net_slirp_smb(const char *exported_dir) |
1148 |
{ |
1149 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
1150 |
|
1151 |
if (legacy_smb_export) {
|
1152 |
fprintf(stderr, "-smb given twice\n");
|
1153 |
return -1; |
1154 |
} |
1155 |
legacy_smb_export = exported_dir; |
1156 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
1157 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
1158 |
vserver_addr); |
1159 |
} |
1160 |
return 0; |
1161 |
} |
1162 |
|
1163 |
#endif /* !defined(_WIN32) */ |
1164 |
|
1165 |
struct GuestFwd {
|
1166 |
CharDriverState *hd; |
1167 |
struct in_addr server;
|
1168 |
int port;
|
1169 |
Slirp *slirp; |
1170 |
}; |
1171 |
|
1172 |
static int guestfwd_can_read(void *opaque) |
1173 |
{ |
1174 |
struct GuestFwd *fwd = opaque;
|
1175 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
1176 |
} |
1177 |
|
1178 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
1179 |
{ |
1180 |
struct GuestFwd *fwd = opaque;
|
1181 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
1182 |
} |
1183 |
|
1184 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
1185 |
int legacy_format)
|
1186 |
{ |
1187 |
struct in_addr server = { .s_addr = 0 }; |
1188 |
struct GuestFwd *fwd;
|
1189 |
const char *p; |
1190 |
char buf[128]; |
1191 |
char *end;
|
1192 |
int port;
|
1193 |
|
1194 |
p = config_str; |
1195 |
if (legacy_format) {
|
1196 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
1197 |
goto fail_syntax;
|
1198 |
} |
1199 |
} else {
|
1200 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
1201 |
goto fail_syntax;
|
1202 |
} |
1203 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
1204 |
goto fail_syntax;
|
1205 |
} |
1206 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
1207 |
goto fail_syntax;
|
1208 |
} |
1209 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
1210 |
goto fail_syntax;
|
1211 |
} |
1212 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
1213 |
goto fail_syntax;
|
1214 |
} |
1215 |
} |
1216 |
port = strtol(buf, &end, 10);
|
1217 |
if (*end != '\0' || port < 1 || port > 65535) { |
1218 |
goto fail_syntax;
|
1219 |
} |
1220 |
|
1221 |
fwd = qemu_malloc(sizeof(struct GuestFwd)); |
1222 |
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); |
1223 |
fwd->hd = qemu_chr_open(buf, p, NULL);
|
1224 |
if (!fwd->hd) {
|
1225 |
qemu_error("could not open guest forwarding device '%s'\n", buf);
|
1226 |
qemu_free(fwd); |
1227 |
return -1; |
1228 |
} |
1229 |
|
1230 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
1231 |
qemu_error("conflicting/invalid host:port in guest forwarding "
|
1232 |
"rule '%s'\n", config_str);
|
1233 |
qemu_free(fwd); |
1234 |
return -1; |
1235 |
} |
1236 |
fwd->server = server; |
1237 |
fwd->port = port; |
1238 |
fwd->slirp = s->slirp; |
1239 |
|
1240 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
1241 |
NULL, fwd);
|
1242 |
return 0; |
1243 |
|
1244 |
fail_syntax:
|
1245 |
qemu_error("invalid guest forwarding rule '%s'\n", config_str);
|
1246 |
return -1; |
1247 |
} |
1248 |
|
1249 |
void do_info_usernet(Monitor *mon)
|
1250 |
{ |
1251 |
SlirpState *s; |
1252 |
|
1253 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) { |
1254 |
monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
|
1255 |
slirp_connection_info(s->slirp, mon); |
1256 |
} |
1257 |
} |
1258 |
|
1259 |
#endif /* CONFIG_SLIRP */ |
1260 |
|
1261 |
#if !defined(_WIN32)
|
1262 |
|
1263 |
typedef struct TAPState { |
1264 |
VLANClientState *vc; |
1265 |
int fd;
|
1266 |
char down_script[1024]; |
1267 |
char down_script_arg[128]; |
1268 |
uint8_t buf[4096];
|
1269 |
unsigned int read_poll : 1; |
1270 |
unsigned int write_poll : 1; |
1271 |
} TAPState; |
1272 |
|
1273 |
static int launch_script(const char *setup_script, const char *ifname, int fd); |
1274 |
|
1275 |
static int tap_can_send(void *opaque); |
1276 |
static void tap_send(void *opaque); |
1277 |
static void tap_writable(void *opaque); |
1278 |
|
1279 |
static void tap_update_fd_handler(TAPState *s) |
1280 |
{ |
1281 |
qemu_set_fd_handler2(s->fd, |
1282 |
s->read_poll ? tap_can_send : NULL,
|
1283 |
s->read_poll ? tap_send : NULL,
|
1284 |
s->write_poll ? tap_writable : NULL,
|
1285 |
s); |
1286 |
} |
1287 |
|
1288 |
static void tap_read_poll(TAPState *s, int enable) |
1289 |
{ |
1290 |
s->read_poll = !!enable; |
1291 |
tap_update_fd_handler(s); |
1292 |
} |
1293 |
|
1294 |
static void tap_write_poll(TAPState *s, int enable) |
1295 |
{ |
1296 |
s->write_poll = !!enable; |
1297 |
tap_update_fd_handler(s); |
1298 |
} |
1299 |
|
1300 |
static void tap_writable(void *opaque) |
1301 |
{ |
1302 |
TAPState *s = opaque; |
1303 |
|
1304 |
tap_write_poll(s, 0);
|
1305 |
|
1306 |
qemu_flush_queued_packets(s->vc); |
1307 |
} |
1308 |
|
1309 |
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov, |
1310 |
int iovcnt)
|
1311 |
{ |
1312 |
TAPState *s = vc->opaque; |
1313 |
ssize_t len; |
1314 |
|
1315 |
do {
|
1316 |
len = writev(s->fd, iov, iovcnt); |
1317 |
} while (len == -1 && errno == EINTR); |
1318 |
|
1319 |
if (len == -1 && errno == EAGAIN) { |
1320 |
tap_write_poll(s, 1);
|
1321 |
return 0; |
1322 |
} |
1323 |
|
1324 |
return len;
|
1325 |
} |
1326 |
|
1327 |
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
1328 |
{ |
1329 |
TAPState *s = vc->opaque; |
1330 |
ssize_t len; |
1331 |
|
1332 |
do {
|
1333 |
len = write(s->fd, buf, size); |
1334 |
} while (len == -1 && (errno == EINTR || errno == EAGAIN)); |
1335 |
|
1336 |
return len;
|
1337 |
} |
1338 |
|
1339 |
static int tap_can_send(void *opaque) |
1340 |
{ |
1341 |
TAPState *s = opaque; |
1342 |
|
1343 |
return qemu_can_send_packet(s->vc);
|
1344 |
} |
1345 |
|
1346 |
#ifdef __sun__
|
1347 |
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) |
1348 |
{ |
1349 |
struct strbuf sbuf;
|
1350 |
int f = 0; |
1351 |
|
1352 |
sbuf.maxlen = maxlen; |
1353 |
sbuf.buf = (char *)buf;
|
1354 |
|
1355 |
return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; |
1356 |
} |
1357 |
#else
|
1358 |
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) |
1359 |
{ |
1360 |
return read(tapfd, buf, maxlen);
|
1361 |
} |
1362 |
#endif
|
1363 |
|
1364 |
static void tap_send_completed(VLANClientState *vc, ssize_t len) |
1365 |
{ |
1366 |
TAPState *s = vc->opaque; |
1367 |
tap_read_poll(s, 1);
|
1368 |
} |
1369 |
|
1370 |
static void tap_send(void *opaque) |
1371 |
{ |
1372 |
TAPState *s = opaque; |
1373 |
int size;
|
1374 |
|
1375 |
do {
|
1376 |
size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
|
1377 |
if (size <= 0) { |
1378 |
break;
|
1379 |
} |
1380 |
|
1381 |
size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed); |
1382 |
if (size == 0) { |
1383 |
tap_read_poll(s, 0);
|
1384 |
} |
1385 |
} while (size > 0); |
1386 |
} |
1387 |
|
1388 |
#ifdef TUNSETSNDBUF
|
1389 |
/* sndbuf should be set to a value lower than the tx queue
|
1390 |
* capacity of any destination network interface.
|
1391 |
* Ethernet NICs generally have txqueuelen=1000, so 1Mb is
|
1392 |
* a good default, given a 1500 byte MTU.
|
1393 |
*/
|
1394 |
#define TAP_DEFAULT_SNDBUF 1024*1024 |
1395 |
|
1396 |
static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) |
1397 |
{ |
1398 |
int sndbuf;
|
1399 |
|
1400 |
sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
|
1401 |
if (!sndbuf) {
|
1402 |
sndbuf = INT_MAX; |
1403 |
} |
1404 |
|
1405 |
if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) { |
1406 |
qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
|
1407 |
return -1; |
1408 |
} |
1409 |
return 0; |
1410 |
} |
1411 |
#else
|
1412 |
static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) |
1413 |
{ |
1414 |
return 0; |
1415 |
} |
1416 |
#endif /* TUNSETSNDBUF */ |
1417 |
|
1418 |
static void tap_cleanup(VLANClientState *vc) |
1419 |
{ |
1420 |
TAPState *s = vc->opaque; |
1421 |
|
1422 |
qemu_purge_queued_packets(vc); |
1423 |
|
1424 |
if (s->down_script[0]) |
1425 |
launch_script(s->down_script, s->down_script_arg, s->fd); |
1426 |
|
1427 |
tap_read_poll(s, 0);
|
1428 |
tap_write_poll(s, 0);
|
1429 |
close(s->fd); |
1430 |
qemu_free(s); |
1431 |
} |
1432 |
|
1433 |
/* fd support */
|
1434 |
|
1435 |
static TAPState *net_tap_fd_init(VLANState *vlan,
|
1436 |
const char *model, |
1437 |
const char *name, |
1438 |
int fd)
|
1439 |
{ |
1440 |
TAPState *s; |
1441 |
|
1442 |
s = qemu_mallocz(sizeof(TAPState));
|
1443 |
s->fd = fd; |
1444 |
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL, |
1445 |
tap_receive, tap_receive_iov, |
1446 |
tap_cleanup, s); |
1447 |
tap_read_poll(s, 1);
|
1448 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); |
1449 |
return s;
|
1450 |
} |
1451 |
|
1452 |
#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
|
1453 |
static int tap_open(char *ifname, int ifname_size) |
1454 |
{ |
1455 |
int fd;
|
1456 |
char *dev;
|
1457 |
struct stat s;
|
1458 |
|
1459 |
TFR(fd = open("/dev/tap", O_RDWR));
|
1460 |
if (fd < 0) { |
1461 |
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
1462 |
return -1; |
1463 |
} |
1464 |
|
1465 |
fstat(fd, &s); |
1466 |
dev = devname(s.st_rdev, S_IFCHR); |
1467 |
pstrcpy(ifname, ifname_size, dev); |
1468 |
|
1469 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1470 |
return fd;
|
1471 |
} |
1472 |
#elif defined(__sun__)
|
1473 |
#define TUNNEWPPA (('T'<<16) | 0x0001) |
1474 |
/*
|
1475 |
* Allocate TAP device, returns opened fd.
|
1476 |
* Stores dev name in the first arg(must be large enough).
|
1477 |
*/
|
1478 |
static int tap_alloc(char *dev, size_t dev_size) |
1479 |
{ |
1480 |
int tap_fd, if_fd, ppa = -1; |
1481 |
static int ip_fd = 0; |
1482 |
char *ptr;
|
1483 |
|
1484 |
static int arp_fd = 0; |
1485 |
int ip_muxid, arp_muxid;
|
1486 |
struct strioctl strioc_if, strioc_ppa;
|
1487 |
int link_type = I_PLINK;;
|
1488 |
struct lifreq ifr;
|
1489 |
char actual_name[32] = ""; |
1490 |
|
1491 |
memset(&ifr, 0x0, sizeof(ifr)); |
1492 |
|
1493 |
if( *dev ){
|
1494 |
ptr = dev; |
1495 |
while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
1496 |
ppa = atoi(ptr); |
1497 |
} |
1498 |
|
1499 |
/* Check if IP device was opened */
|
1500 |
if( ip_fd )
|
1501 |
close(ip_fd); |
1502 |
|
1503 |
TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); |
1504 |
if (ip_fd < 0) { |
1505 |
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
1506 |
return -1; |
1507 |
} |
1508 |
|
1509 |
TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); |
1510 |
if (tap_fd < 0) { |
1511 |
syslog(LOG_ERR, "Can't open /dev/tap");
|
1512 |
return -1; |
1513 |
} |
1514 |
|
1515 |
/* Assign a new PPA and get its unit number. */
|
1516 |
strioc_ppa.ic_cmd = TUNNEWPPA; |
1517 |
strioc_ppa.ic_timout = 0;
|
1518 |
strioc_ppa.ic_len = sizeof(ppa);
|
1519 |
strioc_ppa.ic_dp = (char *)&ppa;
|
1520 |
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) |
1521 |
syslog (LOG_ERR, "Can't assign new interface");
|
1522 |
|
1523 |
TFR(if_fd = open("/dev/tap", O_RDWR, 0)); |
1524 |
if (if_fd < 0) { |
1525 |
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
1526 |
return -1; |
1527 |
} |
1528 |
if(ioctl(if_fd, I_PUSH, "ip") < 0){ |
1529 |
syslog(LOG_ERR, "Can't push IP module");
|
1530 |
return -1; |
1531 |
} |
1532 |
|
1533 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) |
1534 |
syslog(LOG_ERR, "Can't get flags\n");
|
1535 |
|
1536 |
snprintf (actual_name, 32, "tap%d", ppa); |
1537 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
1538 |
|
1539 |
ifr.lifr_ppa = ppa; |
1540 |
/* Assign ppa according to the unit number returned by tun device */
|
1541 |
|
1542 |
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) |
1543 |
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
1544 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) |
1545 |
syslog (LOG_ERR, "Can't get flags\n");
|
1546 |
/* Push arp module to if_fd */
|
1547 |
if (ioctl (if_fd, I_PUSH, "arp") < 0) |
1548 |
syslog (LOG_ERR, "Can't push ARP module (2)");
|
1549 |
|
1550 |
/* Push arp module to ip_fd */
|
1551 |
if (ioctl (ip_fd, I_POP, NULL) < 0) |
1552 |
syslog (LOG_ERR, "I_POP failed\n");
|
1553 |
if (ioctl (ip_fd, I_PUSH, "arp") < 0) |
1554 |
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
1555 |
/* Open arp_fd */
|
1556 |
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); |
1557 |
if (arp_fd < 0) |
1558 |
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); |
1559 |
|
1560 |
/* Set ifname to arp */
|
1561 |
strioc_if.ic_cmd = SIOCSLIFNAME; |
1562 |
strioc_if.ic_timout = 0;
|
1563 |
strioc_if.ic_len = sizeof(ifr);
|
1564 |
strioc_if.ic_dp = (char *)𝔦
|
1565 |
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ |
1566 |
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
1567 |
} |
1568 |
|
1569 |
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ |
1570 |
syslog(LOG_ERR, "Can't link TAP device to IP");
|
1571 |
return -1; |
1572 |
} |
1573 |
|
1574 |
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) |
1575 |
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
1576 |
|
1577 |
close (if_fd); |
1578 |
|
1579 |
memset(&ifr, 0x0, sizeof(ifr)); |
1580 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
1581 |
ifr.lifr_ip_muxid = ip_muxid; |
1582 |
ifr.lifr_arp_muxid = arp_muxid; |
1583 |
|
1584 |
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) |
1585 |
{ |
1586 |
ioctl (ip_fd, I_PUNLINK , arp_muxid); |
1587 |
ioctl (ip_fd, I_PUNLINK, ip_muxid); |
1588 |
syslog (LOG_ERR, "Can't set multiplexor id");
|
1589 |
} |
1590 |
|
1591 |
snprintf(dev, dev_size, "tap%d", ppa);
|
1592 |
return tap_fd;
|
1593 |
} |
1594 |
|
1595 |
static int tap_open(char *ifname, int ifname_size) |
1596 |
{ |
1597 |
char dev[10]=""; |
1598 |
int fd;
|
1599 |
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ |
1600 |
fprintf(stderr, "Cannot allocate TAP device\n");
|
1601 |
return -1; |
1602 |
} |
1603 |
pstrcpy(ifname, ifname_size, dev); |
1604 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1605 |
return fd;
|
1606 |
} |
1607 |
#elif defined (_AIX)
|
1608 |
static int tap_open(char *ifname, int ifname_size) |
1609 |
{ |
1610 |
fprintf (stderr, "no tap on AIX\n");
|
1611 |
return -1; |
1612 |
} |
1613 |
#else
|
1614 |
static int tap_open(char *ifname, int ifname_size) |
1615 |
{ |
1616 |
struct ifreq ifr;
|
1617 |
int fd, ret;
|
1618 |
|
1619 |
TFR(fd = open("/dev/net/tun", O_RDWR));
|
1620 |
if (fd < 0) { |
1621 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
1622 |
return -1; |
1623 |
} |
1624 |
memset(&ifr, 0, sizeof(ifr)); |
1625 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
1626 |
if (ifname[0] != '\0') |
1627 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); |
1628 |
else
|
1629 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
|
1630 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
1631 |
if (ret != 0) { |
1632 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
1633 |
close(fd); |
1634 |
return -1; |
1635 |
} |
1636 |
pstrcpy(ifname, ifname_size, ifr.ifr_name); |
1637 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1638 |
return fd;
|
1639 |
} |
1640 |
#endif
|
1641 |
|
1642 |
static int launch_script(const char *setup_script, const char *ifname, int fd) |
1643 |
{ |
1644 |
sigset_t oldmask, mask; |
1645 |
int pid, status;
|
1646 |
char *args[3]; |
1647 |
char **parg;
|
1648 |
|
1649 |
sigemptyset(&mask); |
1650 |
sigaddset(&mask, SIGCHLD); |
1651 |
sigprocmask(SIG_BLOCK, &mask, &oldmask); |
1652 |
|
1653 |
/* try to launch network script */
|
1654 |
pid = fork(); |
1655 |
if (pid == 0) { |
1656 |
int open_max = sysconf(_SC_OPEN_MAX), i;
|
1657 |
|
1658 |
for (i = 0; i < open_max; i++) { |
1659 |
if (i != STDIN_FILENO &&
|
1660 |
i != STDOUT_FILENO && |
1661 |
i != STDERR_FILENO && |
1662 |
i != fd) { |
1663 |
close(i); |
1664 |
} |
1665 |
} |
1666 |
parg = args; |
1667 |
*parg++ = (char *)setup_script;
|
1668 |
*parg++ = (char *)ifname;
|
1669 |
*parg++ = NULL;
|
1670 |
execv(setup_script, args); |
1671 |
_exit(1);
|
1672 |
} else if (pid > 0) { |
1673 |
while (waitpid(pid, &status, 0) != pid) { |
1674 |
/* loop */
|
1675 |
} |
1676 |
sigprocmask(SIG_SETMASK, &oldmask, NULL);
|
1677 |
|
1678 |
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { |
1679 |
return 0; |
1680 |
} |
1681 |
} |
1682 |
fprintf(stderr, "%s: could not launch network script\n", setup_script);
|
1683 |
return -1; |
1684 |
} |
1685 |
|
1686 |
static TAPState *net_tap_init(VLANState *vlan, const char *model, |
1687 |
const char *name, const char *ifname1, |
1688 |
const char *setup_script, const char *down_script) |
1689 |
{ |
1690 |
TAPState *s; |
1691 |
int fd;
|
1692 |
char ifname[128]; |
1693 |
|
1694 |
if (ifname1 != NULL) |
1695 |
pstrcpy(ifname, sizeof(ifname), ifname1);
|
1696 |
else
|
1697 |
ifname[0] = '\0'; |
1698 |
TFR(fd = tap_open(ifname, sizeof(ifname)));
|
1699 |
if (fd < 0) |
1700 |
return NULL; |
1701 |
|
1702 |
if (!setup_script || !strcmp(setup_script, "no")) |
1703 |
setup_script = "";
|
1704 |
if (setup_script[0] != '\0' && |
1705 |
launch_script(setup_script, ifname, fd)) { |
1706 |
return NULL; |
1707 |
} |
1708 |
s = net_tap_fd_init(vlan, model, name, fd); |
1709 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
1710 |
"ifname=%s,script=%s,downscript=%s",
|
1711 |
ifname, setup_script, down_script); |
1712 |
if (down_script && strcmp(down_script, "no")) { |
1713 |
snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); |
1714 |
snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); |
1715 |
} |
1716 |
return s;
|
1717 |
} |
1718 |
|
1719 |
#endif /* !_WIN32 */ |
1720 |
|
1721 |
#if defined(CONFIG_VDE)
|
1722 |
typedef struct VDEState { |
1723 |
VLANClientState *vc; |
1724 |
VDECONN *vde; |
1725 |
} VDEState; |
1726 |
|
1727 |
static void vde_to_qemu(void *opaque) |
1728 |
{ |
1729 |
VDEState *s = opaque; |
1730 |
uint8_t buf[4096];
|
1731 |
int size;
|
1732 |
|
1733 |
size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); |
1734 |
if (size > 0) { |
1735 |
qemu_send_packet(s->vc, buf, size); |
1736 |
} |
1737 |
} |
1738 |
|
1739 |
static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
1740 |
{ |
1741 |
VDEState *s = vc->opaque; |
1742 |
ssize_t ret; |
1743 |
|
1744 |
do {
|
1745 |
ret = vde_send(s->vde, (const char *)buf, size, 0); |
1746 |
} while (ret < 0 && errno == EINTR); |
1747 |
|
1748 |
return ret;
|
1749 |
} |
1750 |
|
1751 |
static void vde_cleanup(VLANClientState *vc) |
1752 |
{ |
1753 |
VDEState *s = vc->opaque; |
1754 |
qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); |
1755 |
vde_close(s->vde); |
1756 |
qemu_free(s); |
1757 |
} |
1758 |
|
1759 |
static int net_vde_init(VLANState *vlan, const char *model, |
1760 |
const char *name, const char *sock, |
1761 |
int port, const char *group, int mode) |
1762 |
{ |
1763 |
VDEState *s; |
1764 |
char *init_group = (char *)group; |
1765 |
char *init_sock = (char *)sock; |
1766 |
|
1767 |
struct vde_open_args args = {
|
1768 |
.port = port, |
1769 |
.group = init_group, |
1770 |
.mode = mode, |
1771 |
}; |
1772 |
|
1773 |
s = qemu_mallocz(sizeof(VDEState));
|
1774 |
s->vde = vde_open(init_sock, (char *)"QEMU", &args); |
1775 |
if (!s->vde){
|
1776 |
free(s); |
1777 |
return -1; |
1778 |
} |
1779 |
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL, |
1780 |
vde_receive, NULL,
|
1781 |
vde_cleanup, s); |
1782 |
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
1783 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", |
1784 |
sock, vde_datafd(s->vde)); |
1785 |
return 0; |
1786 |
} |
1787 |
#endif
|
1788 |
|
1789 |
/* network connection */
|
1790 |
typedef struct NetSocketState { |
1791 |
VLANClientState *vc; |
1792 |
int fd;
|
1793 |
int state; /* 0 = getting length, 1 = getting data */ |
1794 |
unsigned int index; |
1795 |
unsigned int packet_len; |
1796 |
uint8_t buf[4096];
|
1797 |
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
1798 |
} NetSocketState; |
1799 |
|
1800 |
typedef struct NetSocketListenState { |
1801 |
VLANState *vlan; |
1802 |
char *model;
|
1803 |
char *name;
|
1804 |
int fd;
|
1805 |
} NetSocketListenState; |
1806 |
|
1807 |
/* XXX: we consider we can send the whole packet without blocking */
|
1808 |
static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
1809 |
{ |
1810 |
NetSocketState *s = vc->opaque; |
1811 |
uint32_t len; |
1812 |
len = htonl(size); |
1813 |
|
1814 |
send_all(s->fd, (const uint8_t *)&len, sizeof(len)); |
1815 |
return send_all(s->fd, buf, size);
|
1816 |
} |
1817 |
|
1818 |
static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) |
1819 |
{ |
1820 |
NetSocketState *s = vc->opaque; |
1821 |
|
1822 |
return sendto(s->fd, (const void *)buf, size, 0, |
1823 |
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); |
1824 |
} |
1825 |
|
1826 |
static void net_socket_send(void *opaque) |
1827 |
{ |
1828 |
NetSocketState *s = opaque; |
1829 |
int size, err;
|
1830 |
unsigned l;
|
1831 |
uint8_t buf1[4096];
|
1832 |
const uint8_t *buf;
|
1833 |
|
1834 |
size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); |
1835 |
if (size < 0) { |
1836 |
err = socket_error(); |
1837 |
if (err != EWOULDBLOCK)
|
1838 |
goto eoc;
|
1839 |
} else if (size == 0) { |
1840 |
/* end of connection */
|
1841 |
eoc:
|
1842 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
1843 |
closesocket(s->fd); |
1844 |
return;
|
1845 |
} |
1846 |
buf = buf1; |
1847 |
while (size > 0) { |
1848 |
/* reassemble a packet from the network */
|
1849 |
switch(s->state) {
|
1850 |
case 0: |
1851 |
l = 4 - s->index;
|
1852 |
if (l > size)
|
1853 |
l = size; |
1854 |
memcpy(s->buf + s->index, buf, l); |
1855 |
buf += l; |
1856 |
size -= l; |
1857 |
s->index += l; |
1858 |
if (s->index == 4) { |
1859 |
/* got length */
|
1860 |
s->packet_len = ntohl(*(uint32_t *)s->buf); |
1861 |
s->index = 0;
|
1862 |
s->state = 1;
|
1863 |
} |
1864 |
break;
|
1865 |
case 1: |
1866 |
l = s->packet_len - s->index; |
1867 |
if (l > size)
|
1868 |
l = size; |
1869 |
if (s->index + l <= sizeof(s->buf)) { |
1870 |
memcpy(s->buf + s->index, buf, l); |
1871 |
} else {
|
1872 |
fprintf(stderr, "serious error: oversized packet received,"
|
1873 |
"connection terminated.\n");
|
1874 |
s->state = 0;
|
1875 |
goto eoc;
|
1876 |
} |
1877 |
|
1878 |
s->index += l; |
1879 |
buf += l; |
1880 |
size -= l; |
1881 |
if (s->index >= s->packet_len) {
|
1882 |
qemu_send_packet(s->vc, s->buf, s->packet_len); |
1883 |
s->index = 0;
|
1884 |
s->state = 0;
|
1885 |
} |
1886 |
break;
|
1887 |
} |
1888 |
} |
1889 |
} |
1890 |
|
1891 |
static void net_socket_send_dgram(void *opaque) |
1892 |
{ |
1893 |
NetSocketState *s = opaque; |
1894 |
int size;
|
1895 |
|
1896 |
size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); |
1897 |
if (size < 0) |
1898 |
return;
|
1899 |
if (size == 0) { |
1900 |
/* end of connection */
|
1901 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
1902 |
return;
|
1903 |
} |
1904 |
qemu_send_packet(s->vc, s->buf, size); |
1905 |
} |
1906 |
|
1907 |
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) |
1908 |
{ |
1909 |
struct ip_mreq imr;
|
1910 |
int fd;
|
1911 |
int val, ret;
|
1912 |
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
1913 |
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
1914 |
inet_ntoa(mcastaddr->sin_addr), |
1915 |
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
1916 |
return -1; |
1917 |
|
1918 |
} |
1919 |
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
1920 |
if (fd < 0) { |
1921 |
perror("socket(PF_INET, SOCK_DGRAM)");
|
1922 |
return -1; |
1923 |
} |
1924 |
|
1925 |
val = 1;
|
1926 |
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
1927 |
(const char *)&val, sizeof(val)); |
1928 |
if (ret < 0) { |
1929 |
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
1930 |
goto fail;
|
1931 |
} |
1932 |
|
1933 |
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
1934 |
if (ret < 0) { |
1935 |
perror("bind");
|
1936 |
goto fail;
|
1937 |
} |
1938 |
|
1939 |
/* Add host to multicast group */
|
1940 |
imr.imr_multiaddr = mcastaddr->sin_addr; |
1941 |
imr.imr_interface.s_addr = htonl(INADDR_ANY); |
1942 |
|
1943 |
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
1944 |
(const char *)&imr, sizeof(struct ip_mreq)); |
1945 |
if (ret < 0) { |
1946 |
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
1947 |
goto fail;
|
1948 |
} |
1949 |
|
1950 |
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
1951 |
val = 1;
|
1952 |
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
1953 |
(const char *)&val, sizeof(val)); |
1954 |
if (ret < 0) { |
1955 |
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
1956 |
goto fail;
|
1957 |
} |
1958 |
|
1959 |
socket_set_nonblock(fd); |
1960 |
return fd;
|
1961 |
fail:
|
1962 |
if (fd >= 0) |
1963 |
closesocket(fd); |
1964 |
return -1; |
1965 |
} |
1966 |
|
1967 |
static void net_socket_cleanup(VLANClientState *vc) |
1968 |
{ |
1969 |
NetSocketState *s = vc->opaque; |
1970 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
1971 |
close(s->fd); |
1972 |
qemu_free(s); |
1973 |
} |
1974 |
|
1975 |
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
1976 |
const char *model, |
1977 |
const char *name, |
1978 |
int fd, int is_connected) |
1979 |
{ |
1980 |
struct sockaddr_in saddr;
|
1981 |
int newfd;
|
1982 |
socklen_t saddr_len; |
1983 |
NetSocketState *s; |
1984 |
|
1985 |
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
1986 |
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
1987 |
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
1988 |
*/
|
1989 |
|
1990 |
if (is_connected) {
|
1991 |
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
1992 |
/* must be bound */
|
1993 |
if (saddr.sin_addr.s_addr==0) { |
1994 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
1995 |
fd); |
1996 |
return NULL; |
1997 |
} |
1998 |
/* clone dgram socket */
|
1999 |
newfd = net_socket_mcast_create(&saddr); |
2000 |
if (newfd < 0) { |
2001 |
/* error already reported by net_socket_mcast_create() */
|
2002 |
close(fd); |
2003 |
return NULL; |
2004 |
} |
2005 |
/* clone newfd to fd, close newfd */
|
2006 |
dup2(newfd, fd); |
2007 |
close(newfd); |
2008 |
|
2009 |
} else {
|
2010 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
2011 |
fd, strerror(errno)); |
2012 |
return NULL; |
2013 |
} |
2014 |
} |
2015 |
|
2016 |
s = qemu_mallocz(sizeof(NetSocketState));
|
2017 |
s->fd = fd; |
2018 |
|
2019 |
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL, |
2020 |
net_socket_receive_dgram, NULL,
|
2021 |
net_socket_cleanup, s); |
2022 |
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
2023 |
|
2024 |
/* mcast: save bound address as dst */
|
2025 |
if (is_connected) s->dgram_dst=saddr;
|
2026 |
|
2027 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
2028 |
"socket: fd=%d (%s mcast=%s:%d)",
|
2029 |
fd, is_connected? "cloned" : "", |
2030 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
2031 |
return s;
|
2032 |
} |
2033 |
|
2034 |
static void net_socket_connect(void *opaque) |
2035 |
{ |
2036 |
NetSocketState *s = opaque; |
2037 |
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
2038 |
} |
2039 |
|
2040 |
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
|
2041 |
const char *model, |
2042 |
const char *name, |
2043 |
int fd, int is_connected) |
2044 |
{ |
2045 |
NetSocketState *s; |
2046 |
s = qemu_mallocz(sizeof(NetSocketState));
|
2047 |
s->fd = fd; |
2048 |
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL, |
2049 |
net_socket_receive, NULL,
|
2050 |
net_socket_cleanup, s); |
2051 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
2052 |
"socket: fd=%d", fd);
|
2053 |
if (is_connected) {
|
2054 |
net_socket_connect(s); |
2055 |
} else {
|
2056 |
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
2057 |
} |
2058 |
return s;
|
2059 |
} |
2060 |
|
2061 |
static NetSocketState *net_socket_fd_init(VLANState *vlan,
|
2062 |
const char *model, const char *name, |
2063 |
int fd, int is_connected) |
2064 |
{ |
2065 |
int so_type = -1, optlen=sizeof(so_type); |
2066 |
|
2067 |
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
2068 |
(socklen_t *)&optlen)< 0) {
|
2069 |
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
2070 |
return NULL; |
2071 |
} |
2072 |
switch(so_type) {
|
2073 |
case SOCK_DGRAM:
|
2074 |
return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
|
2075 |
case SOCK_STREAM:
|
2076 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
2077 |
default:
|
2078 |
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
2079 |
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
2080 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
2081 |
} |
2082 |
return NULL; |
2083 |
} |
2084 |
|
2085 |
static void net_socket_accept(void *opaque) |
2086 |
{ |
2087 |
NetSocketListenState *s = opaque; |
2088 |
NetSocketState *s1; |
2089 |
struct sockaddr_in saddr;
|
2090 |
socklen_t len; |
2091 |
int fd;
|
2092 |
|
2093 |
for(;;) {
|
2094 |
len = sizeof(saddr);
|
2095 |
fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
|
2096 |
if (fd < 0 && errno != EINTR) { |
2097 |
return;
|
2098 |
} else if (fd >= 0) { |
2099 |
break;
|
2100 |
} |
2101 |
} |
2102 |
s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
|
2103 |
if (!s1) {
|
2104 |
closesocket(fd); |
2105 |
} else {
|
2106 |
snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
|
2107 |
"socket: connection from %s:%d",
|
2108 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
2109 |
} |
2110 |
} |
2111 |
|
2112 |
static int net_socket_listen_init(VLANState *vlan, |
2113 |
const char *model, |
2114 |
const char *name, |
2115 |
const char *host_str) |
2116 |
{ |
2117 |
NetSocketListenState *s; |
2118 |
int fd, val, ret;
|
2119 |
struct sockaddr_in saddr;
|
2120 |
|
2121 |
if (parse_host_port(&saddr, host_str) < 0) |
2122 |
return -1; |
2123 |
|
2124 |
s = qemu_mallocz(sizeof(NetSocketListenState));
|
2125 |
|
2126 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
2127 |
if (fd < 0) { |
2128 |
perror("socket");
|
2129 |
return -1; |
2130 |
} |
2131 |
socket_set_nonblock(fd); |
2132 |
|
2133 |
/* allow fast reuse */
|
2134 |
val = 1;
|
2135 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); |
2136 |
|
2137 |
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
2138 |
if (ret < 0) { |
2139 |
perror("bind");
|
2140 |
return -1; |
2141 |
} |
2142 |
ret = listen(fd, 0);
|
2143 |
if (ret < 0) { |
2144 |
perror("listen");
|
2145 |
return -1; |
2146 |
} |
2147 |
s->vlan = vlan; |
2148 |
s->model = qemu_strdup(model); |
2149 |
s->name = name ? qemu_strdup(name) : NULL;
|
2150 |
s->fd = fd; |
2151 |
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
2152 |
return 0; |
2153 |
} |
2154 |
|
2155 |
static int net_socket_connect_init(VLANState *vlan, |
2156 |
const char *model, |
2157 |
const char *name, |
2158 |
const char *host_str) |
2159 |
{ |
2160 |
NetSocketState *s; |
2161 |
int fd, connected, ret, err;
|
2162 |
struct sockaddr_in saddr;
|
2163 |
|
2164 |
if (parse_host_port(&saddr, host_str) < 0) |
2165 |
return -1; |
2166 |
|
2167 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
2168 |
if (fd < 0) { |
2169 |
perror("socket");
|
2170 |
return -1; |
2171 |
} |
2172 |
socket_set_nonblock(fd); |
2173 |
|
2174 |
connected = 0;
|
2175 |
for(;;) {
|
2176 |
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
2177 |
if (ret < 0) { |
2178 |
err = socket_error(); |
2179 |
if (err == EINTR || err == EWOULDBLOCK) {
|
2180 |
} else if (err == EINPROGRESS) { |
2181 |
break;
|
2182 |
#ifdef _WIN32
|
2183 |
} else if (err == WSAEALREADY) { |
2184 |
break;
|
2185 |
#endif
|
2186 |
} else {
|
2187 |
perror("connect");
|
2188 |
closesocket(fd); |
2189 |
return -1; |
2190 |
} |
2191 |
} else {
|
2192 |
connected = 1;
|
2193 |
break;
|
2194 |
} |
2195 |
} |
2196 |
s = net_socket_fd_init(vlan, model, name, fd, connected); |
2197 |
if (!s)
|
2198 |
return -1; |
2199 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
2200 |
"socket: connect to %s:%d",
|
2201 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
2202 |
return 0; |
2203 |
} |
2204 |
|
2205 |
static int net_socket_mcast_init(VLANState *vlan, |
2206 |
const char *model, |
2207 |
const char *name, |
2208 |
const char *host_str) |
2209 |
{ |
2210 |
NetSocketState *s; |
2211 |
int fd;
|
2212 |
struct sockaddr_in saddr;
|
2213 |
|
2214 |
if (parse_host_port(&saddr, host_str) < 0) |
2215 |
return -1; |
2216 |
|
2217 |
|
2218 |
fd = net_socket_mcast_create(&saddr); |
2219 |
if (fd < 0) |
2220 |
return -1; |
2221 |
|
2222 |
s = net_socket_fd_init(vlan, model, name, fd, 0);
|
2223 |
if (!s)
|
2224 |
return -1; |
2225 |
|
2226 |
s->dgram_dst = saddr; |
2227 |
|
2228 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
2229 |
"socket: mcast=%s:%d",
|
2230 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
2231 |
return 0; |
2232 |
|
2233 |
} |
2234 |
|
2235 |
typedef struct DumpState { |
2236 |
VLANClientState *pcap_vc; |
2237 |
int fd;
|
2238 |
int pcap_caplen;
|
2239 |
} DumpState; |
2240 |
|
2241 |
#define PCAP_MAGIC 0xa1b2c3d4 |
2242 |
|
2243 |
struct pcap_file_hdr {
|
2244 |
uint32_t magic; |
2245 |
uint16_t version_major; |
2246 |
uint16_t version_minor; |
2247 |
int32_t thiszone; |
2248 |
uint32_t sigfigs; |
2249 |
uint32_t snaplen; |
2250 |
uint32_t linktype; |
2251 |
}; |
2252 |
|
2253 |
struct pcap_sf_pkthdr {
|
2254 |
struct {
|
2255 |
int32_t tv_sec; |
2256 |
int32_t tv_usec; |
2257 |
} ts; |
2258 |
uint32_t caplen; |
2259 |
uint32_t len; |
2260 |
}; |
2261 |
|
2262 |
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
2263 |
{ |
2264 |
DumpState *s = vc->opaque; |
2265 |
struct pcap_sf_pkthdr hdr;
|
2266 |
int64_t ts; |
2267 |
int caplen;
|
2268 |
|
2269 |
/* Early return in case of previous error. */
|
2270 |
if (s->fd < 0) { |
2271 |
return size;
|
2272 |
} |
2273 |
|
2274 |
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
|
2275 |
caplen = size > s->pcap_caplen ? s->pcap_caplen : size; |
2276 |
|
2277 |
hdr.ts.tv_sec = ts / 1000000;
|
2278 |
hdr.ts.tv_usec = ts % 1000000;
|
2279 |
hdr.caplen = caplen; |
2280 |
hdr.len = size; |
2281 |
if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || |
2282 |
write(s->fd, buf, caplen) != caplen) { |
2283 |
qemu_log("-net dump write error - stop dump\n");
|
2284 |
close(s->fd); |
2285 |
s->fd = -1;
|
2286 |
} |
2287 |
|
2288 |
return size;
|
2289 |
} |
2290 |
|
2291 |
static void net_dump_cleanup(VLANClientState *vc) |
2292 |
{ |
2293 |
DumpState *s = vc->opaque; |
2294 |
|
2295 |
close(s->fd); |
2296 |
qemu_free(s); |
2297 |
} |
2298 |
|
2299 |
static int net_dump_init(VLANState *vlan, const char *device, |
2300 |
const char *name, const char *filename, int len) |
2301 |
{ |
2302 |
struct pcap_file_hdr hdr;
|
2303 |
DumpState *s; |
2304 |
|
2305 |
s = qemu_malloc(sizeof(DumpState));
|
2306 |
|
2307 |
s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
|
2308 |
if (s->fd < 0) { |
2309 |
qemu_error("-net dump: can't open %s\n", filename);
|
2310 |
return -1; |
2311 |
} |
2312 |
|
2313 |
s->pcap_caplen = len; |
2314 |
|
2315 |
hdr.magic = PCAP_MAGIC; |
2316 |
hdr.version_major = 2;
|
2317 |
hdr.version_minor = 4;
|
2318 |
hdr.thiszone = 0;
|
2319 |
hdr.sigfigs = 0;
|
2320 |
hdr.snaplen = s->pcap_caplen; |
2321 |
hdr.linktype = 1;
|
2322 |
|
2323 |
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { |
2324 |
qemu_error("-net dump write error: %s\n", strerror(errno));
|
2325 |
close(s->fd); |
2326 |
qemu_free(s); |
2327 |
return -1; |
2328 |
} |
2329 |
|
2330 |
s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL, |
2331 |
dump_receive, NULL,
|
2332 |
net_dump_cleanup, s); |
2333 |
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
|
2334 |
"dump to %s (len=%d)", filename, len);
|
2335 |
return 0; |
2336 |
} |
2337 |
|
2338 |
/* find or alloc a new VLAN */
|
2339 |
VLANState *qemu_find_vlan(int id, int allocate) |
2340 |
{ |
2341 |
VLANState *vlan; |
2342 |
|
2343 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
2344 |
if (vlan->id == id) {
|
2345 |
return vlan;
|
2346 |
} |
2347 |
} |
2348 |
|
2349 |
if (!allocate) {
|
2350 |
return NULL; |
2351 |
} |
2352 |
|
2353 |
vlan = qemu_mallocz(sizeof(VLANState));
|
2354 |
vlan->id = id; |
2355 |
QTAILQ_INIT(&vlan->clients); |
2356 |
|
2357 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
2358 |
qemu_vlan_deliver_packet_iov, |
2359 |
vlan); |
2360 |
|
2361 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
2362 |
|
2363 |
return vlan;
|
2364 |
} |
2365 |
|
2366 |
VLANClientState *qemu_find_netdev(const char *id) |
2367 |
{ |
2368 |
VLANClientState *vc; |
2369 |
|
2370 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
2371 |
if (!strcmp(vc->name, id)) {
|
2372 |
return vc;
|
2373 |
} |
2374 |
} |
2375 |
|
2376 |
return NULL; |
2377 |
} |
2378 |
|
2379 |
static int nic_get_free_idx(void) |
2380 |
{ |
2381 |
int index;
|
2382 |
|
2383 |
for (index = 0; index < MAX_NICS; index++) |
2384 |
if (!nd_table[index].used)
|
2385 |
return index;
|
2386 |
return -1; |
2387 |
} |
2388 |
|
2389 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
2390 |
{ |
2391 |
int i;
|
2392 |
|
2393 |
if (!arg || strcmp(arg, "?")) |
2394 |
return 0; |
2395 |
|
2396 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
2397 |
for (i = 0 ; models[i]; i++) |
2398 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
2399 |
return 1; |
2400 |
} |
2401 |
|
2402 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
2403 |
{ |
2404 |
const char *models[2]; |
2405 |
|
2406 |
models[0] = model;
|
2407 |
models[1] = NULL; |
2408 |
|
2409 |
if (qemu_show_nic_models(nd->model, models))
|
2410 |
exit(0);
|
2411 |
if (qemu_find_nic_model(nd, models, model) < 0) |
2412 |
exit(1);
|
2413 |
} |
2414 |
|
2415 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
2416 |
const char *default_model) |
2417 |
{ |
2418 |
int i;
|
2419 |
|
2420 |
if (!nd->model)
|
2421 |
nd->model = qemu_strdup(default_model); |
2422 |
|
2423 |
for (i = 0 ; models[i]; i++) { |
2424 |
if (strcmp(nd->model, models[i]) == 0) |
2425 |
return i;
|
2426 |
} |
2427 |
|
2428 |
qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
|
2429 |
return -1; |
2430 |
} |
2431 |
|
2432 |
static int net_handle_fd_param(Monitor *mon, const char *param) |
2433 |
{ |
2434 |
if (!qemu_isdigit(param[0])) { |
2435 |
int fd;
|
2436 |
|
2437 |
fd = monitor_get_fd(mon, param); |
2438 |
if (fd == -1) { |
2439 |
qemu_error("No file descriptor named %s found", param);
|
2440 |
return -1; |
2441 |
} |
2442 |
|
2443 |
return fd;
|
2444 |
} else {
|
2445 |
return strtol(param, NULL, 0); |
2446 |
} |
2447 |
} |
2448 |
|
2449 |
static int net_init_nic(QemuOpts *opts, |
2450 |
Monitor *mon, |
2451 |
const char *name, |
2452 |
VLANState *vlan) |
2453 |
{ |
2454 |
int idx;
|
2455 |
NICInfo *nd; |
2456 |
const char *netdev; |
2457 |
|
2458 |
idx = nic_get_free_idx(); |
2459 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
2460 |
qemu_error("Too Many NICs\n");
|
2461 |
return -1; |
2462 |
} |
2463 |
|
2464 |
nd = &nd_table[idx]; |
2465 |
|
2466 |
memset(nd, 0, sizeof(*nd)); |
2467 |
|
2468 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
2469 |
nd->netdev = qemu_find_netdev(netdev); |
2470 |
if (!nd->netdev) {
|
2471 |
qemu_error("netdev '%s' not found\n", netdev);
|
2472 |
return -1; |
2473 |
} |
2474 |
} else {
|
2475 |
assert(vlan); |
2476 |
nd->vlan = vlan; |
2477 |
} |
2478 |
if (name) {
|
2479 |
nd->name = qemu_strdup(name); |
2480 |
} |
2481 |
if (qemu_opt_get(opts, "model")) { |
2482 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
2483 |
} |
2484 |
if (qemu_opt_get(opts, "addr")) { |
2485 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
2486 |
} |
2487 |
|
2488 |
nd->macaddr[0] = 0x52; |
2489 |
nd->macaddr[1] = 0x54; |
2490 |
nd->macaddr[2] = 0x00; |
2491 |
nd->macaddr[3] = 0x12; |
2492 |
nd->macaddr[4] = 0x34; |
2493 |
nd->macaddr[5] = 0x56 + idx; |
2494 |
|
2495 |
if (qemu_opt_get(opts, "macaddr") && |
2496 |
parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { |
2497 |
qemu_error("invalid syntax for ethernet address\n");
|
2498 |
return -1; |
2499 |
} |
2500 |
|
2501 |
nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
|
2502 |
if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
|
2503 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
2504 |
qemu_error("invalid # of vectors: %d\n", nd->nvectors);
|
2505 |
return -1; |
2506 |
} |
2507 |
|
2508 |
nd->used = 1;
|
2509 |
if (vlan) {
|
2510 |
nd->vlan->nb_guest_devs++; |
2511 |
} |
2512 |
nb_nics++; |
2513 |
|
2514 |
return idx;
|
2515 |
} |
2516 |
|
2517 |
#if defined(CONFIG_SLIRP)
|
2518 |
static int net_init_slirp_configs(const char *name, const char *value, void *opaque) |
2519 |
{ |
2520 |
struct slirp_config_str *config;
|
2521 |
|
2522 |
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { |
2523 |
return 0; |
2524 |
} |
2525 |
|
2526 |
config = qemu_mallocz(sizeof(*config));
|
2527 |
|
2528 |
pstrcpy(config->str, sizeof(config->str), value);
|
2529 |
|
2530 |
if (!strcmp(name, "hostfwd")) { |
2531 |
config->flags = SLIRP_CFG_HOSTFWD; |
2532 |
} |
2533 |
|
2534 |
config->next = slirp_configs; |
2535 |
slirp_configs = config; |
2536 |
|
2537 |
return 0; |
2538 |
} |
2539 |
|
2540 |
static int net_init_slirp(QemuOpts *opts, |
2541 |
Monitor *mon, |
2542 |
const char *name, |
2543 |
VLANState *vlan) |
2544 |
{ |
2545 |
struct slirp_config_str *config;
|
2546 |
const char *vhost; |
2547 |
const char *vhostname; |
2548 |
const char *vdhcp_start; |
2549 |
const char *vnamesrv; |
2550 |
const char *tftp_export; |
2551 |
const char *bootfile; |
2552 |
const char *smb_export; |
2553 |
const char *vsmbsrv; |
2554 |
char *vnet = NULL; |
2555 |
int restricted = 0; |
2556 |
int ret;
|
2557 |
|
2558 |
vhost = qemu_opt_get(opts, "host");
|
2559 |
vhostname = qemu_opt_get(opts, "hostname");
|
2560 |
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
2561 |
vnamesrv = qemu_opt_get(opts, "dns");
|
2562 |
tftp_export = qemu_opt_get(opts, "tftp");
|
2563 |
bootfile = qemu_opt_get(opts, "bootfile");
|
2564 |
smb_export = qemu_opt_get(opts, "smb");
|
2565 |
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
2566 |
|
2567 |
if (qemu_opt_get(opts, "ip")) { |
2568 |
const char *ip = qemu_opt_get(opts, "ip"); |
2569 |
int l = strlen(ip) + strlen("/24") + 1; |
2570 |
|
2571 |
vnet = qemu_malloc(l); |
2572 |
|
2573 |
/* emulate legacy ip= parameter */
|
2574 |
pstrcpy(vnet, l, ip); |
2575 |
pstrcat(vnet, l, "/24");
|
2576 |
} |
2577 |
|
2578 |
if (qemu_opt_get(opts, "net")) { |
2579 |
if (vnet) {
|
2580 |
qemu_free(vnet); |
2581 |
} |
2582 |
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
2583 |
} |
2584 |
|
2585 |
if (qemu_opt_get(opts, "restrict") && |
2586 |
qemu_opt_get(opts, "restrict")[0] == 'y') { |
2587 |
restricted = 1;
|
2588 |
} |
2589 |
|
2590 |
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
2591 |
|
2592 |
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
2593 |
vhostname, tftp_export, bootfile, vdhcp_start, |
2594 |
vnamesrv, smb_export, vsmbsrv); |
2595 |
|
2596 |
while (slirp_configs) {
|
2597 |
config = slirp_configs; |
2598 |
slirp_configs = config->next; |
2599 |
qemu_free(config); |
2600 |
} |
2601 |
|
2602 |
if (ret != -1 && vlan) { |
2603 |
vlan->nb_host_devs++; |
2604 |
} |
2605 |
|
2606 |
qemu_free(vnet); |
2607 |
|
2608 |
return ret;
|
2609 |
} |
2610 |
#endif /* CONFIG_SLIRP */ |
2611 |
|
2612 |
#ifdef _WIN32
|
2613 |
static int net_init_tap_win32(QemuOpts *opts, |
2614 |
Monitor *mon, |
2615 |
const char *name, |
2616 |
VLANState *vlan) |
2617 |
{ |
2618 |
const char *ifname; |
2619 |
|
2620 |
ifname = qemu_opt_get(opts, "ifname");
|
2621 |
|
2622 |
if (!ifname) {
|
2623 |
qemu_error("tap: no interface name\n");
|
2624 |
return -1; |
2625 |
} |
2626 |
|
2627 |
if (tap_win32_init(vlan, "tap", name, ifname) == -1) { |
2628 |
return -1; |
2629 |
} |
2630 |
|
2631 |
if (vlan) {
|
2632 |
vlan->nb_host_devs++; |
2633 |
} |
2634 |
|
2635 |
return 0; |
2636 |
} |
2637 |
#elif !defined(_AIX)
|
2638 |
static int net_init_tap(QemuOpts *opts, |
2639 |
Monitor *mon, |
2640 |
const char *name, |
2641 |
VLANState *vlan) |
2642 |
{ |
2643 |
TAPState *s; |
2644 |
|
2645 |
if (qemu_opt_get(opts, "fd")) { |
2646 |
int fd;
|
2647 |
|
2648 |
if (qemu_opt_get(opts, "ifname") || |
2649 |
qemu_opt_get(opts, "script") ||
|
2650 |
qemu_opt_get(opts, "downscript")) {
|
2651 |
qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
|
2652 |
return -1; |
2653 |
} |
2654 |
|
2655 |
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
2656 |
if (fd == -1) { |
2657 |
return -1; |
2658 |
} |
2659 |
|
2660 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
2661 |
|
2662 |
s = net_tap_fd_init(vlan, "tap", name, fd);
|
2663 |
if (!s) {
|
2664 |
close(fd); |
2665 |
} |
2666 |
} else {
|
2667 |
const char *ifname, *script, *downscript; |
2668 |
|
2669 |
ifname = qemu_opt_get(opts, "ifname");
|
2670 |
script = qemu_opt_get(opts, "script");
|
2671 |
downscript = qemu_opt_get(opts, "downscript");
|
2672 |
|
2673 |
if (!script) {
|
2674 |
script = DEFAULT_NETWORK_SCRIPT; |
2675 |
} |
2676 |
if (!downscript) {
|
2677 |
downscript = DEFAULT_NETWORK_DOWN_SCRIPT; |
2678 |
} |
2679 |
|
2680 |
s = net_tap_init(vlan, "tap", name, ifname, script, downscript);
|
2681 |
} |
2682 |
|
2683 |
if (!s) {
|
2684 |
return -1; |
2685 |
} |
2686 |
|
2687 |
if (tap_set_sndbuf(s, opts) < 0) { |
2688 |
return -1; |
2689 |
} |
2690 |
|
2691 |
if (vlan) {
|
2692 |
vlan->nb_host_devs++; |
2693 |
} |
2694 |
|
2695 |
return 0; |
2696 |
} |
2697 |
#endif
|
2698 |
|
2699 |
static int net_init_socket(QemuOpts *opts, |
2700 |
Monitor *mon, |
2701 |
const char *name, |
2702 |
VLANState *vlan) |
2703 |
{ |
2704 |
if (qemu_opt_get(opts, "fd")) { |
2705 |
int fd;
|
2706 |
|
2707 |
if (qemu_opt_get(opts, "listen") || |
2708 |
qemu_opt_get(opts, "connect") ||
|
2709 |
qemu_opt_get(opts, "mcast")) {
|
2710 |
qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
|
2711 |
return -1; |
2712 |
} |
2713 |
|
2714 |
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
2715 |
if (fd == -1) { |
2716 |
return -1; |
2717 |
} |
2718 |
|
2719 |
if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { |
2720 |
close(fd); |
2721 |
return -1; |
2722 |
} |
2723 |
} else if (qemu_opt_get(opts, "listen")) { |
2724 |
const char *listen; |
2725 |
|
2726 |
if (qemu_opt_get(opts, "fd") || |
2727 |
qemu_opt_get(opts, "connect") ||
|
2728 |
qemu_opt_get(opts, "mcast")) {
|
2729 |
qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
|
2730 |
return -1; |
2731 |
} |
2732 |
|
2733 |
listen = qemu_opt_get(opts, "listen");
|
2734 |
|
2735 |
if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { |
2736 |
return -1; |
2737 |
} |
2738 |
} else if (qemu_opt_get(opts, "connect")) { |
2739 |
const char *connect; |
2740 |
|
2741 |
if (qemu_opt_get(opts, "fd") || |
2742 |
qemu_opt_get(opts, "listen") ||
|
2743 |
qemu_opt_get(opts, "mcast")) {
|
2744 |
qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
|
2745 |
return -1; |
2746 |
} |
2747 |
|
2748 |
connect = qemu_opt_get(opts, "connect");
|
2749 |
|
2750 |
if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { |
2751 |
return -1; |
2752 |
} |
2753 |
} else if (qemu_opt_get(opts, "mcast")) { |
2754 |
const char *mcast; |
2755 |
|
2756 |
if (qemu_opt_get(opts, "fd") || |
2757 |
qemu_opt_get(opts, "connect") ||
|
2758 |
qemu_opt_get(opts, "listen")) {
|
2759 |
qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
|
2760 |
return -1; |
2761 |
} |
2762 |
|
2763 |
mcast = qemu_opt_get(opts, "mcast");
|
2764 |
|
2765 |
if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) { |
2766 |
return -1; |
2767 |
} |
2768 |
} else {
|
2769 |
qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
|
2770 |
return -1; |
2771 |
} |
2772 |
|
2773 |
if (vlan) {
|
2774 |
vlan->nb_host_devs++; |
2775 |
} |
2776 |
|
2777 |
return 0; |
2778 |
} |
2779 |
|
2780 |
#ifdef CONFIG_VDE
|
2781 |
static int net_init_vde(QemuOpts *opts, |
2782 |
Monitor *mon, |
2783 |
const char *name, |
2784 |
VLANState *vlan) |
2785 |
{ |
2786 |
const char *sock; |
2787 |
const char *group; |
2788 |
int port, mode;
|
2789 |
|
2790 |
sock = qemu_opt_get(opts, "sock");
|
2791 |
group = qemu_opt_get(opts, "group");
|
2792 |
|
2793 |
port = qemu_opt_get_number(opts, "port", 0); |
2794 |
mode = qemu_opt_get_number(opts, "mode", 0700); |
2795 |
|
2796 |
if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) { |
2797 |
return -1; |
2798 |
} |
2799 |
|
2800 |
if (vlan) {
|
2801 |
vlan->nb_host_devs++; |
2802 |
} |
2803 |
|
2804 |
return 0; |
2805 |
} |
2806 |
#endif
|
2807 |
|
2808 |
static int net_init_dump(QemuOpts *opts, |
2809 |
Monitor *mon, |
2810 |
const char *name, |
2811 |
VLANState *vlan) |
2812 |
{ |
2813 |
int len;
|
2814 |
const char *file; |
2815 |
char def_file[128]; |
2816 |
|
2817 |
assert(vlan); |
2818 |
|
2819 |
file = qemu_opt_get(opts, "file");
|
2820 |
if (!file) {
|
2821 |
snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id); |
2822 |
file = def_file; |
2823 |
} |
2824 |
|
2825 |
len = qemu_opt_get_size(opts, "len", 65536); |
2826 |
|
2827 |
return net_dump_init(vlan, "dump", name, file, len); |
2828 |
} |
2829 |
|
2830 |
#define NET_COMMON_PARAMS_DESC \
|
2831 |
{ \ |
2832 |
.name = "type", \
|
2833 |
.type = QEMU_OPT_STRING, \ |
2834 |
.help = "net client type (nic, tap etc.)", \
|
2835 |
}, { \ |
2836 |
.name = "vlan", \
|
2837 |
.type = QEMU_OPT_NUMBER, \ |
2838 |
.help = "vlan number", \
|
2839 |
}, { \ |
2840 |
.name = "name", \
|
2841 |
.type = QEMU_OPT_STRING, \ |
2842 |
.help = "identifier for monitor commands", \
|
2843 |
} |
2844 |
|
2845 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
2846 |
Monitor *mon, |
2847 |
const char *name, |
2848 |
VLANState *vlan); |
2849 |
|
2850 |
/* magic number, but compiler will warn if too small */
|
2851 |
#define NET_MAX_DESC 20 |
2852 |
|
2853 |
static struct { |
2854 |
const char *type; |
2855 |
net_client_init_func init; |
2856 |
QemuOptDesc desc[NET_MAX_DESC]; |
2857 |
} net_client_types[] = { |
2858 |
{ |
2859 |
.type = "none",
|
2860 |
.desc = { |
2861 |
NET_COMMON_PARAMS_DESC, |
2862 |
{ /* end of list */ }
|
2863 |
}, |
2864 |
}, { |
2865 |
.type = "nic",
|
2866 |
.init = net_init_nic, |
2867 |
.desc = { |
2868 |
NET_COMMON_PARAMS_DESC, |
2869 |
{ |
2870 |
.name = "netdev",
|
2871 |
.type = QEMU_OPT_STRING, |
2872 |
.help = "id of -netdev to connect to",
|
2873 |
}, |
2874 |
{ |
2875 |
.name = "macaddr",
|
2876 |
.type = QEMU_OPT_STRING, |
2877 |
.help = "MAC address",
|
2878 |
}, { |
2879 |
.name = "model",
|
2880 |
.type = QEMU_OPT_STRING, |
2881 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
2882 |
}, { |
2883 |
.name = "addr",
|
2884 |
.type = QEMU_OPT_STRING, |
2885 |
.help = "PCI device address",
|
2886 |
}, { |
2887 |
.name = "vectors",
|
2888 |
.type = QEMU_OPT_NUMBER, |
2889 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
2890 |
}, |
2891 |
{ /* end of list */ }
|
2892 |
}, |
2893 |
#ifdef CONFIG_SLIRP
|
2894 |
}, { |
2895 |
.type = "user",
|
2896 |
.init = net_init_slirp, |
2897 |
.desc = { |
2898 |
NET_COMMON_PARAMS_DESC, |
2899 |
{ |
2900 |
.name = "hostname",
|
2901 |
.type = QEMU_OPT_STRING, |
2902 |
.help = "client hostname reported by the builtin DHCP server",
|
2903 |
}, { |
2904 |
.name = "restrict",
|
2905 |
.type = QEMU_OPT_STRING, |
2906 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
2907 |
}, { |
2908 |
.name = "ip",
|
2909 |
.type = QEMU_OPT_STRING, |
2910 |
.help = "legacy parameter, use net= instead",
|
2911 |
}, { |
2912 |
.name = "net",
|
2913 |
.type = QEMU_OPT_STRING, |
2914 |
.help = "IP address and optional netmask",
|
2915 |
}, { |
2916 |
.name = "host",
|
2917 |
.type = QEMU_OPT_STRING, |
2918 |
.help = "guest-visible address of the host",
|
2919 |
}, { |
2920 |
.name = "tftp",
|
2921 |
.type = QEMU_OPT_STRING, |
2922 |
.help = "root directory of the built-in TFTP server",
|
2923 |
}, { |
2924 |
.name = "bootfile",
|
2925 |
.type = QEMU_OPT_STRING, |
2926 |
.help = "BOOTP filename, for use with tftp=",
|
2927 |
}, { |
2928 |
.name = "dhcpstart",
|
2929 |
.type = QEMU_OPT_STRING, |
2930 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
2931 |
}, { |
2932 |
.name = "dns",
|
2933 |
.type = QEMU_OPT_STRING, |
2934 |
.help = "guest-visible address of the virtual nameserver",
|
2935 |
}, { |
2936 |
.name = "smb",
|
2937 |
.type = QEMU_OPT_STRING, |
2938 |
.help = "root directory of the built-in SMB server",
|
2939 |
}, { |
2940 |
.name = "smbserver",
|
2941 |
.type = QEMU_OPT_STRING, |
2942 |
.help = "IP address of the built-in SMB server",
|
2943 |
}, { |
2944 |
.name = "hostfwd",
|
2945 |
.type = QEMU_OPT_STRING, |
2946 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
2947 |
}, { |
2948 |
.name = "guestfwd",
|
2949 |
.type = QEMU_OPT_STRING, |
2950 |
.help = "IP address and port to forward guest TCP connections",
|
2951 |
}, |
2952 |
{ /* end of list */ }
|
2953 |
}, |
2954 |
#endif
|
2955 |
#ifdef _WIN32
|
2956 |
}, { |
2957 |
.type = "tap",
|
2958 |
.init = net_init_tap_win32, |
2959 |
.desc = { |
2960 |
NET_COMMON_PARAMS_DESC, |
2961 |
{ |
2962 |
.name = "ifname",
|
2963 |
.type = QEMU_OPT_STRING, |
2964 |
.help = "interface name",
|
2965 |
}, |
2966 |
{ /* end of list */ }
|
2967 |
}, |
2968 |
#elif !defined(_AIX)
|
2969 |
}, { |
2970 |
.type = "tap",
|
2971 |
.init = net_init_tap, |
2972 |
.desc = { |
2973 |
NET_COMMON_PARAMS_DESC, |
2974 |
{ |
2975 |
.name = "fd",
|
2976 |
.type = QEMU_OPT_STRING, |
2977 |
.help = "file descriptor of an already opened tap",
|
2978 |
}, { |
2979 |
.name = "ifname",
|
2980 |
.type = QEMU_OPT_STRING, |
2981 |
.help = "interface name",
|
2982 |
}, { |
2983 |
.name = "script",
|
2984 |
.type = QEMU_OPT_STRING, |
2985 |
.help = "script to initialize the interface",
|
2986 |
}, { |
2987 |
.name = "downscript",
|
2988 |
.type = QEMU_OPT_STRING, |
2989 |
.help = "script to shut down the interface",
|
2990 |
#ifdef TUNSETSNDBUF
|
2991 |
}, { |
2992 |
.name = "sndbuf",
|
2993 |
.type = QEMU_OPT_SIZE, |
2994 |
.help = "send buffer limit"
|
2995 |
#endif
|
2996 |
}, |
2997 |
{ /* end of list */ }
|
2998 |
}, |
2999 |
#endif
|
3000 |
}, { |
3001 |
.type = "socket",
|
3002 |
.init = net_init_socket, |
3003 |
.desc = { |
3004 |
NET_COMMON_PARAMS_DESC, |
3005 |
{ |
3006 |
.name = "fd",
|
3007 |
.type = QEMU_OPT_STRING, |
3008 |
.help = "file descriptor of an already opened socket",
|
3009 |
}, { |
3010 |
.name = "listen",
|
3011 |
.type = QEMU_OPT_STRING, |
3012 |
.help = "port number, and optional hostname, to listen on",
|
3013 |
}, { |
3014 |
.name = "connect",
|
3015 |
.type = QEMU_OPT_STRING, |
3016 |
.help = "port number, and optional hostname, to connect to",
|
3017 |
}, { |
3018 |
.name = "mcast",
|
3019 |
.type = QEMU_OPT_STRING, |
3020 |
.help = "UDP multicast address and port number",
|
3021 |
}, |
3022 |
{ /* end of list */ }
|
3023 |
}, |
3024 |
#ifdef CONFIG_VDE
|
3025 |
}, { |
3026 |
.type = "vde",
|
3027 |
.init = net_init_vde, |
3028 |
.desc = { |
3029 |
NET_COMMON_PARAMS_DESC, |
3030 |
{ |
3031 |
.name = "sock",
|
3032 |
.type = QEMU_OPT_STRING, |
3033 |
.help = "socket path",
|
3034 |
}, { |
3035 |
.name = "port",
|
3036 |
.type = QEMU_OPT_NUMBER, |
3037 |
.help = "port number",
|
3038 |
}, { |
3039 |
.name = "group",
|
3040 |
.type = QEMU_OPT_STRING, |
3041 |
.help = "group owner of socket",
|
3042 |
}, { |
3043 |
.name = "mode",
|
3044 |
.type = QEMU_OPT_NUMBER, |
3045 |
.help = "permissions for socket",
|
3046 |
}, |
3047 |
{ /* end of list */ }
|
3048 |
}, |
3049 |
#endif
|
3050 |
}, { |
3051 |
.type = "dump",
|
3052 |
.init = net_init_dump, |
3053 |
.desc = { |
3054 |
NET_COMMON_PARAMS_DESC, |
3055 |
{ |
3056 |
.name = "len",
|
3057 |
.type = QEMU_OPT_SIZE, |
3058 |
.help = "per-packet size limit (64k default)",
|
3059 |
}, { |
3060 |
.name = "file",
|
3061 |
.type = QEMU_OPT_STRING, |
3062 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
3063 |
}, |
3064 |
{ /* end of list */ }
|
3065 |
}, |
3066 |
}, |
3067 |
{ /* end of list */ }
|
3068 |
}; |
3069 |
|
3070 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
3071 |
{ |
3072 |
const char *name; |
3073 |
const char *type; |
3074 |
int i;
|
3075 |
|
3076 |
type = qemu_opt_get(opts, "type");
|
3077 |
if (!type) {
|
3078 |
qemu_error("No type specified for -net\n");
|
3079 |
return -1; |
3080 |
} |
3081 |
|
3082 |
if (is_netdev) {
|
3083 |
if (strcmp(type, "tap") != 0 && |
3084 |
#ifdef CONFIG_SLIRP
|
3085 |
strcmp(type, "user") != 0 && |
3086 |
#endif
|
3087 |
#ifdef CONFIG_VDE
|
3088 |
strcmp(type, "vde") != 0 && |
3089 |
#endif
|
3090 |
strcmp(type, "socket") != 0) { |
3091 |
qemu_error("The '%s' network backend type is not valid with -netdev\n",
|
3092 |
type); |
3093 |
return -1; |
3094 |
} |
3095 |
|
3096 |
if (qemu_opt_get(opts, "vlan")) { |
3097 |
qemu_error("The 'vlan' parameter is not valid with -netdev\n");
|
3098 |
return -1; |
3099 |
} |
3100 |
if (qemu_opt_get(opts, "name")) { |
3101 |
qemu_error("The 'name' parameter is not valid with -netdev\n");
|
3102 |
return -1; |
3103 |
} |
3104 |
if (!qemu_opts_id(opts)) {
|
3105 |
qemu_error("The id= parameter is required with -netdev\n");
|
3106 |
return -1; |
3107 |
} |
3108 |
} |
3109 |
|
3110 |
name = qemu_opts_id(opts); |
3111 |
if (!name) {
|
3112 |
name = qemu_opt_get(opts, "name");
|
3113 |
} |
3114 |
|
3115 |
for (i = 0; net_client_types[i].type != NULL; i++) { |
3116 |
if (!strcmp(net_client_types[i].type, type)) {
|
3117 |
VLANState *vlan = NULL;
|
3118 |
|
3119 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
3120 |
return -1; |
3121 |
} |
3122 |
|
3123 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
3124 |
* netdev= parameter. */
|
3125 |
if (!(is_netdev ||
|
3126 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
3127 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
3128 |
} |
3129 |
|
3130 |
if (net_client_types[i].init) {
|
3131 |
return net_client_types[i].init(opts, mon, name, vlan);
|
3132 |
} else {
|
3133 |
return 0; |
3134 |
} |
3135 |
} |
3136 |
} |
3137 |
|
3138 |
qemu_error("Invalid -net type '%s'\n", type);
|
3139 |
return -1; |
3140 |
} |
3141 |
|
3142 |
void net_client_uninit(NICInfo *nd)
|
3143 |
{ |
3144 |
if (nd->vlan) {
|
3145 |
nd->vlan->nb_guest_devs--; |
3146 |
} |
3147 |
nb_nics--; |
3148 |
|
3149 |
qemu_free(nd->model); |
3150 |
qemu_free(nd->name); |
3151 |
qemu_free(nd->devaddr); |
3152 |
|
3153 |
nd->used = 0;
|
3154 |
} |
3155 |
|
3156 |
static int net_host_check_device(const char *device) |
3157 |
{ |
3158 |
int i;
|
3159 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
3160 |
#ifdef CONFIG_SLIRP
|
3161 |
,"user"
|
3162 |
#endif
|
3163 |
#ifdef CONFIG_VDE
|
3164 |
,"vde"
|
3165 |
#endif
|
3166 |
}; |
3167 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
3168 |
if (!strncmp(valid_param_list[i], device,
|
3169 |
strlen(valid_param_list[i]))) |
3170 |
return 1; |
3171 |
} |
3172 |
|
3173 |
return 0; |
3174 |
} |
3175 |
|
3176 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
3177 |
{ |
3178 |
const char *device = qdict_get_str(qdict, "device"); |
3179 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
3180 |
QemuOpts *opts; |
3181 |
|
3182 |
if (!net_host_check_device(device)) {
|
3183 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
3184 |
return;
|
3185 |
} |
3186 |
|
3187 |
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
3188 |
if (!opts) {
|
3189 |
monitor_printf(mon, "parsing network options '%s' failed\n",
|
3190 |
opts_str ? opts_str : "");
|
3191 |
return;
|
3192 |
} |
3193 |
|
3194 |
qemu_opt_set(opts, "type", device);
|
3195 |
|
3196 |
if (net_client_init(mon, opts, 0) < 0) { |
3197 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
3198 |
} |
3199 |
} |
3200 |
|
3201 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
3202 |
{ |
3203 |
VLANClientState *vc; |
3204 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
3205 |
const char *device = qdict_get_str(qdict, "device"); |
3206 |
|
3207 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
3208 |
if (!vc) {
|
3209 |
return;
|
3210 |
} |
3211 |
if (!net_host_check_device(vc->model)) {
|
3212 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
3213 |
return;
|
3214 |
} |
3215 |
qemu_del_vlan_client(vc); |
3216 |
} |
3217 |
|
3218 |
void net_set_boot_mask(int net_boot_mask) |
3219 |
{ |
3220 |
int i;
|
3221 |
|
3222 |
/* Only the first four NICs may be bootable */
|
3223 |
net_boot_mask = net_boot_mask & 0xF;
|
3224 |
|
3225 |
for (i = 0; i < nb_nics; i++) { |
3226 |
if (net_boot_mask & (1 << i)) { |
3227 |
nd_table[i].bootable = 1;
|
3228 |
net_boot_mask &= ~(1 << i);
|
3229 |
} |
3230 |
} |
3231 |
|
3232 |
if (net_boot_mask) {
|
3233 |
fprintf(stderr, "Cannot boot from non-existent NIC\n");
|
3234 |
exit(1);
|
3235 |
} |
3236 |
} |
3237 |
|
3238 |
void do_info_network(Monitor *mon)
|
3239 |
{ |
3240 |
VLANState *vlan; |
3241 |
|
3242 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
3243 |
VLANClientState *vc; |
3244 |
|
3245 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
3246 |
|
3247 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
3248 |
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
3249 |
} |
3250 |
} |
3251 |
} |
3252 |
|
3253 |
void do_set_link(Monitor *mon, const QDict *qdict) |
3254 |
{ |
3255 |
VLANState *vlan; |
3256 |
VLANClientState *vc = NULL;
|
3257 |
const char *name = qdict_get_str(qdict, "name"); |
3258 |
const char *up_or_down = qdict_get_str(qdict, "up_or_down"); |
3259 |
|
3260 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
3261 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
3262 |
if (strcmp(vc->name, name) == 0) { |
3263 |
goto done;
|
3264 |
} |
3265 |
} |
3266 |
} |
3267 |
done:
|
3268 |
|
3269 |
if (!vc) {
|
3270 |
monitor_printf(mon, "could not find network device '%s'\n", name);
|
3271 |
return;
|
3272 |
} |
3273 |
|
3274 |
if (strcmp(up_or_down, "up") == 0) |
3275 |
vc->link_down = 0;
|
3276 |
else if (strcmp(up_or_down, "down") == 0) |
3277 |
vc->link_down = 1;
|
3278 |
else
|
3279 |
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
3280 |
"valid\n", up_or_down);
|
3281 |
|
3282 |
if (vc->link_status_changed)
|
3283 |
vc->link_status_changed(vc); |
3284 |
} |
3285 |
|
3286 |
void net_cleanup(void) |
3287 |
{ |
3288 |
VLANState *vlan; |
3289 |
VLANClientState *vc, *next_vc; |
3290 |
|
3291 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
3292 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { |
3293 |
qemu_del_vlan_client(vc); |
3294 |
} |
3295 |
} |
3296 |
|
3297 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { |
3298 |
qemu_del_vlan_client(vc); |
3299 |
} |
3300 |
} |
3301 |
|
3302 |
static void net_check_clients(void) |
3303 |
{ |
3304 |
VLANState *vlan; |
3305 |
|
3306 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
3307 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
3308 |
continue;
|
3309 |
if (vlan->nb_guest_devs == 0) |
3310 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
3311 |
if (vlan->nb_host_devs == 0) |
3312 |
fprintf(stderr, |
3313 |
"Warning: vlan %d is not connected to host network\n",
|
3314 |
vlan->id); |
3315 |
} |
3316 |
} |
3317 |
|
3318 |
static int net_init_client(QemuOpts *opts, void *dummy) |
3319 |
{ |
3320 |
if (net_client_init(NULL, opts, 0) < 0) |
3321 |
return -1; |
3322 |
return 0; |
3323 |
} |
3324 |
|
3325 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
3326 |
{ |
3327 |
return net_client_init(NULL, opts, 1); |
3328 |
} |
3329 |
|
3330 |
int net_init_clients(void) |
3331 |
{ |
3332 |
if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
|
3333 |
/* if no clients, we use a default config */
|
3334 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); |
3335 |
#ifdef CONFIG_SLIRP
|
3336 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); |
3337 |
#endif
|
3338 |
} |
3339 |
|
3340 |
QTAILQ_INIT(&vlans); |
3341 |
QTAILQ_INIT(&non_vlan_clients); |
3342 |
|
3343 |
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) |
3344 |
return -1; |
3345 |
|
3346 |
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { |
3347 |
return -1; |
3348 |
} |
3349 |
|
3350 |
net_check_clients(); |
3351 |
|
3352 |
return 0; |
3353 |
} |
3354 |
|
3355 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
3356 |
{ |
3357 |
#if defined(CONFIG_SLIRP)
|
3358 |
/* handle legacy -net channel,port:chr */
|
3359 |
if (!strcmp(opts_list->name, "net") && |
3360 |
!strncmp(optarg, "channel,", strlen("channel,"))) { |
3361 |
int ret;
|
3362 |
|
3363 |
optarg += strlen("channel,");
|
3364 |
|
3365 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
3366 |
struct slirp_config_str *config;
|
3367 |
|
3368 |
config = qemu_malloc(sizeof(*config));
|
3369 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
3370 |
config->flags = SLIRP_CFG_LEGACY; |
3371 |
config->next = slirp_configs; |
3372 |
slirp_configs = config; |
3373 |
ret = 0;
|
3374 |
} else {
|
3375 |
ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
3376 |
} |
3377 |
|
3378 |
return ret;
|
3379 |
} |
3380 |
#endif
|
3381 |
if (!qemu_opts_parse(opts_list, optarg, "type")) { |
3382 |
return -1; |
3383 |
} |
3384 |
|
3385 |
return 0; |
3386 |
} |