mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
e94667b91c
We'll be doing more packet queueing in later commits. Signed-off-by: Mark McLoughlin <markmc@redhat.com>
2475 lines
64 KiB
C
2475 lines
64 KiB
C
/*
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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>
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#include <fcntl.h>
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#include <signal.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <zlib.h>
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/* Needed early for HOST_BSD etc. */
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#include "config-host.h"
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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>
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#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 HOST_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>
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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"
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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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|
|
#if defined(__OpenBSD__)
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#include <util.h>
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|
#endif
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|
|
|
#if defined(CONFIG_VDE)
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#include <libvdeplug.h>
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#endif
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|
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#ifdef _WIN32
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#include <windows.h>
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#include <malloc.h>
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#include <sys/timeb.h>
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#include <mmsystem.h>
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#define getopt_long_only getopt_long
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#define memalign(align, size) malloc(size)
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#endif
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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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#if defined(CONFIG_SLIRP)
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#include "libslirp.h"
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#endif
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static VLANState *first_vlan;
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/***********************************************************/
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/* network device redirectors */
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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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for(i=0;i<size;i+=16) {
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len = size - i;
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if (len > 16)
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len = 16;
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fprintf(f, "%08x ", i);
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for(j=0;j<16;j++) {
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if (j < len)
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fprintf(f, " %02x", buf[i+j]);
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else
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fprintf(f, " ");
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}
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fprintf(f, " ");
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for(j=0;j<len;j++) {
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c = buf[i+j];
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if (c < ' ' || c > '~')
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c = '.';
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fprintf(f, "%c", c);
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}
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fprintf(f, "\n");
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}
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}
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#endif
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static int 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;
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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);
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if (i == 5) {
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if (*p != '\0')
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return -1;
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} else {
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if (*p != ':' && *p != '-')
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return -1;
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p++;
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}
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}
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return 0;
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}
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return -1;
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}
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
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{
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const char *p, *p1;
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int len;
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p = *pp;
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p1 = strchr(p, sep);
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if (!p1)
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return -1;
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len = p1 - p;
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p1++;
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if (buf_size > 0) {
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if (len > buf_size - 1)
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len = buf_size - 1;
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memcpy(buf, p, len);
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buf[len] = '\0';
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}
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*pp = p1;
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return 0;
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}
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int parse_host_src_port(struct sockaddr_in *haddr,
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struct sockaddr_in *saddr,
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const char *input_str)
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{
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char *str = strdup(input_str);
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char *host_str = str;
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char *src_str;
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const char *src_str2;
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char *ptr;
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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,',')))
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*ptr = '\0';
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if ((src_str = strchr(input_str,'@'))) {
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*src_str = '\0';
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src_str++;
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}
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if (parse_host_port(haddr, host_str) < 0)
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goto fail;
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src_str2 = src_str;
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if (!src_str || *src_str == '\0')
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src_str2 = ":0";
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if (parse_host_port(saddr, src_str2) < 0)
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goto fail;
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free(str);
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return(0);
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fail:
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free(str);
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return -1;
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}
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int parse_host_port(struct sockaddr_in *saddr, const char *str)
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{
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char buf[512];
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struct hostent *he;
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const char *p, *r;
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int port;
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p = str;
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
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return -1;
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saddr->sin_family = AF_INET;
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if (buf[0] == '\0') {
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saddr->sin_addr.s_addr = 0;
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} else {
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if (qemu_isdigit(buf[0])) {
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if (!inet_aton(buf, &saddr->sin_addr))
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return -1;
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} else {
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if ((he = gethostbyname(buf)) == NULL)
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return - 1;
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saddr->sin_addr = *(struct in_addr *)he->h_addr;
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}
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}
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port = strtol(p, (char **)&r, 0);
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if (r == p)
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return -1;
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saddr->sin_port = htons(port);
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return 0;
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}
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#if !defined(_WIN32) && 0
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static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
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{
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const char *p;
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int len;
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len = MIN(108, strlen(str));
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p = strchr(str, ',');
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if (p)
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len = MIN(len, p - str);
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memset(uaddr, 0, sizeof(*uaddr));
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uaddr->sun_family = AF_UNIX;
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memcpy(uaddr->sun_path, str, len);
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return 0;
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}
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#endif
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void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
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{
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snprintf(vc->info_str, sizeof(vc->info_str),
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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vc->model,
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macaddr[0], macaddr[1], macaddr[2],
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macaddr[3], macaddr[4], macaddr[5]);
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}
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static char *assign_name(VLANClientState *vc1, const char *model)
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{
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VLANState *vlan;
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char buf[256];
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int id = 0;
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for (vlan = first_vlan; vlan; vlan = vlan->next) {
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VLANClientState *vc;
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for (vc = vlan->first_client; vc; vc = vc->next)
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if (vc != vc1 && strcmp(vc->model, model) == 0)
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id++;
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}
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snprintf(buf, sizeof(buf), "%s.%d", model, id);
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return strdup(buf);
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}
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VLANClientState *qemu_new_vlan_client(VLANState *vlan,
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const char *model,
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const char *name,
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NetCanReceive *can_receive,
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NetReceive *receive,
|
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NetReceiveIOV *receive_iov,
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NetCleanup *cleanup,
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void *opaque)
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{
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VLANClientState *vc, **pvc;
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vc = qemu_mallocz(sizeof(VLANClientState));
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vc->model = strdup(model);
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if (name)
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vc->name = strdup(name);
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else
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vc->name = assign_name(vc, model);
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vc->can_receive = can_receive;
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vc->receive = receive;
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vc->receive_iov = receive_iov;
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vc->cleanup = cleanup;
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vc->opaque = opaque;
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vc->vlan = vlan;
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vc->next = NULL;
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pvc = &vlan->first_client;
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while (*pvc != NULL)
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pvc = &(*pvc)->next;
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*pvc = vc;
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return vc;
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}
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|
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void qemu_del_vlan_client(VLANClientState *vc)
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{
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VLANClientState **pvc = &vc->vlan->first_client;
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|
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while (*pvc != NULL)
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if (*pvc == vc) {
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*pvc = vc->next;
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if (vc->cleanup) {
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vc->cleanup(vc);
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}
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free(vc->name);
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free(vc->model);
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qemu_free(vc);
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break;
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} else
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pvc = &(*pvc)->next;
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}
|
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|
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VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
|
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{
|
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VLANClientState **pvc = &vlan->first_client;
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|
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while (*pvc != NULL)
|
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if ((*pvc)->opaque == opaque)
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return *pvc;
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else
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pvc = &(*pvc)->next;
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|
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return NULL;
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}
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|
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int qemu_can_send_packet(VLANClientState *sender)
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{
|
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VLANState *vlan = sender->vlan;
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VLANClientState *vc;
|
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|
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for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
|
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if (vc == sender) {
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continue;
|
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}
|
|
|
|
/* no can_receive() handler, they can always receive */
|
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if (!vc->can_receive || vc->can_receive(vc)) {
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return 1;
|
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}
|
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}
|
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return 0;
|
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}
|
|
|
|
static int
|
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qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
|
|
{
|
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VLANClientState *vc;
|
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int ret = -1;
|
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|
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sender->vlan->delivering = 1;
|
|
|
|
for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
|
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ssize_t len;
|
|
|
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if (vc == sender) {
|
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continue;
|
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}
|
|
|
|
if (vc->link_down) {
|
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ret = size;
|
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continue;
|
|
}
|
|
|
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len = vc->receive(vc, buf, size);
|
|
|
|
ret = (ret >= 0) ? ret : len;
|
|
}
|
|
|
|
sender->vlan->delivering = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void qemu_flush_queued_packets(VLANClientState *vc)
|
|
{
|
|
VLANPacket *packet;
|
|
|
|
while ((packet = vc->vlan->send_queue) != NULL) {
|
|
vc->vlan->send_queue = packet->next;
|
|
qemu_deliver_packet(packet->sender, packet->data, packet->size);
|
|
qemu_free(packet);
|
|
}
|
|
}
|
|
|
|
static void
|
|
qemu_enqueue_packet(VLANClientState *sender, const uint8_t *buf, int size)
|
|
{
|
|
VLANPacket *packet;
|
|
|
|
packet = qemu_malloc(sizeof(VLANPacket) + size);
|
|
packet->next = sender->vlan->send_queue;
|
|
packet->sender = sender;
|
|
packet->size = size;
|
|
memcpy(packet->data, buf, size);
|
|
sender->vlan->send_queue = packet;
|
|
}
|
|
|
|
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
|
|
{
|
|
VLANState *vlan = vc->vlan;
|
|
|
|
if (vc->link_down)
|
|
return;
|
|
|
|
#ifdef DEBUG_NET
|
|
printf("vlan %d send:\n", vlan->id);
|
|
hex_dump(stdout, buf, size);
|
|
#endif
|
|
if (vlan->delivering) {
|
|
qemu_enqueue_packet(vc, buf, size);
|
|
return;
|
|
}
|
|
|
|
qemu_deliver_packet(vc, buf, size);
|
|
qemu_flush_queued_packets(vc);
|
|
}
|
|
|
|
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
|
|
int iovcnt)
|
|
{
|
|
uint8_t buffer[4096];
|
|
size_t offset = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < iovcnt; i++) {
|
|
size_t len;
|
|
|
|
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
|
memcpy(buffer + offset, iov[i].iov_base, len);
|
|
offset += len;
|
|
}
|
|
|
|
vc->receive(vc, buffer, offset);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
|
|
{
|
|
size_t offset = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < iovcnt; i++)
|
|
offset += iov[i].iov_len;
|
|
return offset;
|
|
}
|
|
|
|
static int qemu_deliver_packet_iov(VLANClientState *sender,
|
|
const struct iovec *iov, int iovcnt)
|
|
{
|
|
VLANClientState *vc;
|
|
int ret = -1;
|
|
|
|
sender->vlan->delivering = 1;
|
|
|
|
for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
|
|
ssize_t len;
|
|
|
|
if (vc == sender) {
|
|
continue;
|
|
}
|
|
|
|
if (vc->link_down) {
|
|
ret = calc_iov_length(iov, iovcnt);
|
|
continue;
|
|
}
|
|
|
|
if (vc->receive_iov) {
|
|
len = vc->receive_iov(vc, iov, iovcnt);
|
|
} else {
|
|
len = vc_sendv_compat(vc, iov, iovcnt);
|
|
}
|
|
|
|
ret = (ret >= 0) ? ret : len;
|
|
}
|
|
|
|
sender->vlan->delivering = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
|
|
const struct iovec *iov, int iovcnt)
|
|
{
|
|
VLANPacket *packet;
|
|
size_t max_len = 0;
|
|
int i;
|
|
|
|
max_len = calc_iov_length(iov, iovcnt);
|
|
|
|
packet = qemu_malloc(sizeof(VLANPacket) + max_len);
|
|
packet->next = sender->vlan->send_queue;
|
|
packet->sender = sender;
|
|
packet->size = 0;
|
|
|
|
for (i = 0; i < iovcnt; i++) {
|
|
size_t len = iov[i].iov_len;
|
|
|
|
memcpy(packet->data + packet->size, iov[i].iov_base, len);
|
|
packet->size += len;
|
|
}
|
|
|
|
sender->vlan->send_queue = packet;
|
|
|
|
return packet->size;
|
|
}
|
|
|
|
ssize_t qemu_sendv_packet(VLANClientState *sender, const struct iovec *iov,
|
|
int iovcnt)
|
|
{
|
|
int ret;
|
|
|
|
if (sender->link_down) {
|
|
return calc_iov_length(iov, iovcnt);
|
|
}
|
|
|
|
if (sender->vlan->delivering) {
|
|
return qemu_enqueue_packet_iov(sender, iov, iovcnt);
|
|
}
|
|
|
|
ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
|
|
|
|
qemu_flush_queued_packets(sender);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void config_error(Monitor *mon, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
if (mon) {
|
|
monitor_vprintf(mon, fmt, ap);
|
|
} else {
|
|
fprintf(stderr, "qemu: ");
|
|
vfprintf(stderr, fmt, ap);
|
|
exit(1);
|
|
}
|
|
va_end(ap);
|
|
}
|
|
|
|
#if defined(CONFIG_SLIRP)
|
|
|
|
/* slirp network adapter */
|
|
|
|
struct slirp_config_str {
|
|
struct slirp_config_str *next;
|
|
const char *str;
|
|
};
|
|
|
|
static int slirp_inited;
|
|
static struct slirp_config_str *slirp_redirs;
|
|
#ifndef _WIN32
|
|
static const char *slirp_smb_export;
|
|
#endif
|
|
static VLANClientState *slirp_vc;
|
|
|
|
static void slirp_smb(const char *exported_dir);
|
|
static void slirp_redirection(Monitor *mon, const char *redir_str);
|
|
|
|
int slirp_can_output(void)
|
|
{
|
|
return !slirp_vc || qemu_can_send_packet(slirp_vc);
|
|
}
|
|
|
|
void slirp_output(const uint8_t *pkt, int pkt_len)
|
|
{
|
|
#ifdef DEBUG_SLIRP
|
|
printf("slirp output:\n");
|
|
hex_dump(stdout, pkt, pkt_len);
|
|
#endif
|
|
if (!slirp_vc)
|
|
return;
|
|
qemu_send_packet(slirp_vc, pkt, pkt_len);
|
|
}
|
|
|
|
int slirp_is_inited(void)
|
|
{
|
|
return slirp_inited;
|
|
}
|
|
|
|
static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
#ifdef DEBUG_SLIRP
|
|
printf("slirp input:\n");
|
|
hex_dump(stdout, buf, size);
|
|
#endif
|
|
slirp_input(buf, size);
|
|
return size;
|
|
}
|
|
|
|
static int slirp_in_use;
|
|
|
|
static void net_slirp_cleanup(VLANClientState *vc)
|
|
{
|
|
slirp_in_use = 0;
|
|
}
|
|
|
|
static int net_slirp_init(VLANState *vlan, const char *model, const char *name,
|
|
int restricted, const char *ip)
|
|
{
|
|
if (slirp_in_use) {
|
|
/* slirp only supports a single instance so far */
|
|
return -1;
|
|
}
|
|
if (!slirp_inited) {
|
|
slirp_inited = 1;
|
|
slirp_init(restricted, ip);
|
|
|
|
while (slirp_redirs) {
|
|
struct slirp_config_str *config = slirp_redirs;
|
|
|
|
slirp_redirection(NULL, config->str);
|
|
slirp_redirs = config->next;
|
|
qemu_free(config);
|
|
}
|
|
#ifndef _WIN32
|
|
if (slirp_smb_export) {
|
|
slirp_smb(slirp_smb_export);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
|
|
NULL, net_slirp_cleanup, NULL);
|
|
slirp_vc->info_str[0] = '\0';
|
|
slirp_in_use = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void net_slirp_redir_print(void *opaque, int is_udp,
|
|
struct in_addr *laddr, u_int lport,
|
|
struct in_addr *faddr, u_int fport)
|
|
{
|
|
Monitor *mon = (Monitor *)opaque;
|
|
uint32_t h_addr;
|
|
uint32_t g_addr;
|
|
char buf[16];
|
|
|
|
h_addr = ntohl(faddr->s_addr);
|
|
g_addr = ntohl(laddr->s_addr);
|
|
|
|
monitor_printf(mon, " %s |", is_udp ? "udp" : "tcp" );
|
|
snprintf(buf, 15, "%d.%d.%d.%d", (h_addr >> 24) & 0xff,
|
|
(h_addr >> 16) & 0xff,
|
|
(h_addr >> 8) & 0xff,
|
|
(h_addr) & 0xff);
|
|
monitor_printf(mon, " %15s |", buf);
|
|
monitor_printf(mon, " %5d |", fport);
|
|
|
|
snprintf(buf, 15, "%d.%d.%d.%d", (g_addr >> 24) & 0xff,
|
|
(g_addr >> 16) & 0xff,
|
|
(g_addr >> 8) & 0xff,
|
|
(g_addr) & 0xff);
|
|
monitor_printf(mon, " %15s |", buf);
|
|
monitor_printf(mon, " %5d\n", lport);
|
|
|
|
}
|
|
|
|
static void net_slirp_redir_list(Monitor *mon)
|
|
{
|
|
if (!mon)
|
|
return;
|
|
|
|
monitor_printf(mon, " Prot | Host Addr | HPort | Guest Addr | GPort\n");
|
|
monitor_printf(mon, " | | | | \n");
|
|
slirp_redir_loop(net_slirp_redir_print, mon);
|
|
}
|
|
|
|
static void net_slirp_redir_rm(Monitor *mon, const char *port_str)
|
|
{
|
|
int host_port;
|
|
char buf[256] = "";
|
|
const char *p = port_str;
|
|
int is_udp = 0;
|
|
int n;
|
|
|
|
if (!mon)
|
|
return;
|
|
|
|
if (!port_str || !port_str[0])
|
|
goto fail_syntax;
|
|
|
|
get_str_sep(buf, sizeof(buf), &p, ':');
|
|
|
|
if (!strcmp(buf, "tcp") || buf[0] == '\0') {
|
|
is_udp = 0;
|
|
} else if (!strcmp(buf, "udp")) {
|
|
is_udp = 1;
|
|
} else {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
host_port = atoi(p);
|
|
|
|
n = slirp_redir_rm(is_udp, host_port);
|
|
|
|
monitor_printf(mon, "removed %d redirections to %s port %d\n", n,
|
|
is_udp ? "udp" : "tcp", host_port);
|
|
return;
|
|
|
|
fail_syntax:
|
|
monitor_printf(mon, "invalid format\n");
|
|
}
|
|
|
|
static void slirp_redirection(Monitor *mon, const char *redir_str)
|
|
{
|
|
struct in_addr guest_addr;
|
|
int host_port, guest_port;
|
|
const char *p;
|
|
char buf[256], *r;
|
|
int is_udp;
|
|
|
|
p = redir_str;
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (!strcmp(buf, "tcp") || buf[0] == '\0') {
|
|
is_udp = 0;
|
|
} else if (!strcmp(buf, "udp")) {
|
|
is_udp = 1;
|
|
} else {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
host_port = strtol(buf, &r, 0);
|
|
if (r == buf) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] == '\0') {
|
|
pstrcpy(buf, sizeof(buf), "10.0.2.15");
|
|
}
|
|
if (!inet_aton(buf, &guest_addr)) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
guest_port = strtol(p, &r, 0);
|
|
if (r == p) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
|
|
config_error(mon, "could not set up redirection '%s'\n", redir_str);
|
|
}
|
|
return;
|
|
|
|
fail_syntax:
|
|
config_error(mon, "invalid redirection format '%s'\n", redir_str);
|
|
}
|
|
|
|
void net_slirp_redir(Monitor *mon, const char *redir_str, const char *redir_opt2)
|
|
{
|
|
struct slirp_config_str *config;
|
|
|
|
if (!slirp_inited) {
|
|
if (mon) {
|
|
monitor_printf(mon, "user mode network stack not in use\n");
|
|
} else {
|
|
config = qemu_malloc(sizeof(*config));
|
|
config->str = redir_str;
|
|
config->next = slirp_redirs;
|
|
slirp_redirs = config;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!strcmp(redir_str, "remove")) {
|
|
net_slirp_redir_rm(mon, redir_opt2);
|
|
return;
|
|
}
|
|
|
|
if (!strcmp(redir_str, "list")) {
|
|
net_slirp_redir_list(mon);
|
|
return;
|
|
}
|
|
|
|
slirp_redirection(mon, redir_str);
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
|
|
static char smb_dir[1024];
|
|
|
|
static void erase_dir(char *dir_name)
|
|
{
|
|
DIR *d;
|
|
struct dirent *de;
|
|
char filename[1024];
|
|
|
|
/* erase all the files in the directory */
|
|
if ((d = opendir(dir_name)) != NULL) {
|
|
for(;;) {
|
|
de = readdir(d);
|
|
if (!de)
|
|
break;
|
|
if (strcmp(de->d_name, ".") != 0 &&
|
|
strcmp(de->d_name, "..") != 0) {
|
|
snprintf(filename, sizeof(filename), "%s/%s",
|
|
smb_dir, de->d_name);
|
|
if (unlink(filename) != 0) /* is it a directory? */
|
|
erase_dir(filename);
|
|
}
|
|
}
|
|
closedir(d);
|
|
rmdir(dir_name);
|
|
}
|
|
}
|
|
|
|
/* automatic user mode samba server configuration */
|
|
static void smb_exit(void)
|
|
{
|
|
erase_dir(smb_dir);
|
|
}
|
|
|
|
static void slirp_smb(const char *exported_dir)
|
|
{
|
|
char smb_conf[1024];
|
|
char smb_cmdline[1024];
|
|
FILE *f;
|
|
|
|
/* XXX: better tmp dir construction */
|
|
snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
|
|
if (mkdir(smb_dir, 0700) < 0) {
|
|
fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
|
|
exit(1);
|
|
}
|
|
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
|
|
|
|
f = fopen(smb_conf, "w");
|
|
if (!f) {
|
|
fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
|
|
exit(1);
|
|
}
|
|
fprintf(f,
|
|
"[global]\n"
|
|
"private dir=%s\n"
|
|
"smb ports=0\n"
|
|
"socket address=127.0.0.1\n"
|
|
"pid directory=%s\n"
|
|
"lock directory=%s\n"
|
|
"log file=%s/log.smbd\n"
|
|
"smb passwd file=%s/smbpasswd\n"
|
|
"security = share\n"
|
|
"[qemu]\n"
|
|
"path=%s\n"
|
|
"read only=no\n"
|
|
"guest ok=yes\n",
|
|
smb_dir,
|
|
smb_dir,
|
|
smb_dir,
|
|
smb_dir,
|
|
smb_dir,
|
|
exported_dir
|
|
);
|
|
fclose(f);
|
|
atexit(smb_exit);
|
|
|
|
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
|
|
SMBD_COMMAND, smb_conf);
|
|
|
|
slirp_add_exec(0, smb_cmdline, 4, 139);
|
|
}
|
|
|
|
/* automatic user mode samba server configuration */
|
|
void net_slirp_smb(const char *exported_dir)
|
|
{
|
|
if (slirp_smb_export) {
|
|
fprintf(stderr, "-smb given twice\n");
|
|
exit(1);
|
|
}
|
|
slirp_smb_export = exported_dir;
|
|
if (slirp_inited) {
|
|
slirp_smb(exported_dir);
|
|
}
|
|
}
|
|
|
|
#endif /* !defined(_WIN32) */
|
|
|
|
void do_info_slirp(Monitor *mon)
|
|
{
|
|
slirp_stats();
|
|
}
|
|
|
|
struct VMChannel {
|
|
CharDriverState *hd;
|
|
int port;
|
|
};
|
|
|
|
static int vmchannel_can_read(void *opaque)
|
|
{
|
|
struct VMChannel *vmc = (struct VMChannel*)opaque;
|
|
return slirp_socket_can_recv(4, vmc->port);
|
|
}
|
|
|
|
static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
struct VMChannel *vmc = (struct VMChannel*)opaque;
|
|
slirp_socket_recv(4, vmc->port, buf, size);
|
|
}
|
|
|
|
#endif /* CONFIG_SLIRP */
|
|
|
|
#if !defined(_WIN32)
|
|
|
|
typedef struct TAPState {
|
|
VLANClientState *vc;
|
|
int fd;
|
|
char down_script[1024];
|
|
char down_script_arg[128];
|
|
uint8_t buf[4096];
|
|
} TAPState;
|
|
|
|
static int launch_script(const char *setup_script, const char *ifname, int fd);
|
|
|
|
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
|
|
int iovcnt)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
ssize_t len;
|
|
|
|
do {
|
|
len = writev(s->fd, iov, iovcnt);
|
|
} while (len == -1 && (errno == EINTR || errno == EAGAIN));
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
ssize_t len;
|
|
|
|
do {
|
|
len = write(s->fd, buf, size);
|
|
} while (len == -1 && (errno == EINTR || errno == EAGAIN));
|
|
|
|
return len;
|
|
}
|
|
|
|
static int tap_can_send(void *opaque)
|
|
{
|
|
TAPState *s = opaque;
|
|
|
|
return qemu_can_send_packet(s->vc);
|
|
}
|
|
|
|
#ifdef __sun__
|
|
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
|
|
{
|
|
struct strbuf sbuf;
|
|
int f = 0;
|
|
|
|
sbuf.maxlen = maxlen;
|
|
sbuf.buf = (char *)buf;
|
|
|
|
return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
|
|
}
|
|
#else
|
|
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
|
|
{
|
|
return read(tapfd, buf, maxlen);
|
|
}
|
|
#endif
|
|
|
|
static void tap_send(void *opaque)
|
|
{
|
|
TAPState *s = opaque;
|
|
int size;
|
|
|
|
size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
|
|
if (size > 0) {
|
|
qemu_send_packet(s->vc, s->buf, size);
|
|
}
|
|
}
|
|
|
|
static void tap_cleanup(VLANClientState *vc)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
|
|
if (s->down_script[0])
|
|
launch_script(s->down_script, s->down_script_arg, s->fd);
|
|
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
}
|
|
|
|
/* fd support */
|
|
|
|
static TAPState *net_tap_fd_init(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
int fd)
|
|
{
|
|
TAPState *s;
|
|
|
|
s = qemu_mallocz(sizeof(TAPState));
|
|
s->fd = fd;
|
|
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
|
|
tap_receive_iov, tap_cleanup, s);
|
|
qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
|
|
return s;
|
|
}
|
|
|
|
#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
|
|
static int tap_open(char *ifname, int ifname_size)
|
|
{
|
|
int fd;
|
|
char *dev;
|
|
struct stat s;
|
|
|
|
TFR(fd = open("/dev/tap", O_RDWR));
|
|
if (fd < 0) {
|
|
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
|
return -1;
|
|
}
|
|
|
|
fstat(fd, &s);
|
|
dev = devname(s.st_rdev, S_IFCHR);
|
|
pstrcpy(ifname, ifname_size, dev);
|
|
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
return fd;
|
|
}
|
|
#elif defined(__sun__)
|
|
#define TUNNEWPPA (('T'<<16) | 0x0001)
|
|
/*
|
|
* Allocate TAP device, returns opened fd.
|
|
* Stores dev name in the first arg(must be large enough).
|
|
*/
|
|
static int tap_alloc(char *dev, size_t dev_size)
|
|
{
|
|
int tap_fd, if_fd, ppa = -1;
|
|
static int ip_fd = 0;
|
|
char *ptr;
|
|
|
|
static int arp_fd = 0;
|
|
int ip_muxid, arp_muxid;
|
|
struct strioctl strioc_if, strioc_ppa;
|
|
int link_type = I_PLINK;;
|
|
struct lifreq ifr;
|
|
char actual_name[32] = "";
|
|
|
|
memset(&ifr, 0x0, sizeof(ifr));
|
|
|
|
if( *dev ){
|
|
ptr = dev;
|
|
while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
|
|
ppa = atoi(ptr);
|
|
}
|
|
|
|
/* Check if IP device was opened */
|
|
if( ip_fd )
|
|
close(ip_fd);
|
|
|
|
TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
|
|
if (ip_fd < 0) {
|
|
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
|
return -1;
|
|
}
|
|
|
|
TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
|
|
if (tap_fd < 0) {
|
|
syslog(LOG_ERR, "Can't open /dev/tap");
|
|
return -1;
|
|
}
|
|
|
|
/* Assign a new PPA and get its unit number. */
|
|
strioc_ppa.ic_cmd = TUNNEWPPA;
|
|
strioc_ppa.ic_timout = 0;
|
|
strioc_ppa.ic_len = sizeof(ppa);
|
|
strioc_ppa.ic_dp = (char *)&ppa;
|
|
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
|
|
syslog (LOG_ERR, "Can't assign new interface");
|
|
|
|
TFR(if_fd = open("/dev/tap", O_RDWR, 0));
|
|
if (if_fd < 0) {
|
|
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
|
return -1;
|
|
}
|
|
if(ioctl(if_fd, I_PUSH, "ip") < 0){
|
|
syslog(LOG_ERR, "Can't push IP module");
|
|
return -1;
|
|
}
|
|
|
|
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
|
|
syslog(LOG_ERR, "Can't get flags\n");
|
|
|
|
snprintf (actual_name, 32, "tap%d", ppa);
|
|
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
|
|
|
ifr.lifr_ppa = ppa;
|
|
/* Assign ppa according to the unit number returned by tun device */
|
|
|
|
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
|
|
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
|
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
|
|
syslog (LOG_ERR, "Can't get flags\n");
|
|
/* Push arp module to if_fd */
|
|
if (ioctl (if_fd, I_PUSH, "arp") < 0)
|
|
syslog (LOG_ERR, "Can't push ARP module (2)");
|
|
|
|
/* Push arp module to ip_fd */
|
|
if (ioctl (ip_fd, I_POP, NULL) < 0)
|
|
syslog (LOG_ERR, "I_POP failed\n");
|
|
if (ioctl (ip_fd, I_PUSH, "arp") < 0)
|
|
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
|
/* Open arp_fd */
|
|
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
|
|
if (arp_fd < 0)
|
|
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
|
|
|
|
/* Set ifname to arp */
|
|
strioc_if.ic_cmd = SIOCSLIFNAME;
|
|
strioc_if.ic_timout = 0;
|
|
strioc_if.ic_len = sizeof(ifr);
|
|
strioc_if.ic_dp = (char *)𝔦
|
|
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
|
|
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
|
}
|
|
|
|
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
|
|
syslog(LOG_ERR, "Can't link TAP device to IP");
|
|
return -1;
|
|
}
|
|
|
|
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
|
|
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
|
|
|
close (if_fd);
|
|
|
|
memset(&ifr, 0x0, sizeof(ifr));
|
|
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
|
ifr.lifr_ip_muxid = ip_muxid;
|
|
ifr.lifr_arp_muxid = arp_muxid;
|
|
|
|
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
|
|
{
|
|
ioctl (ip_fd, I_PUNLINK , arp_muxid);
|
|
ioctl (ip_fd, I_PUNLINK, ip_muxid);
|
|
syslog (LOG_ERR, "Can't set multiplexor id");
|
|
}
|
|
|
|
snprintf(dev, dev_size, "tap%d", ppa);
|
|
return tap_fd;
|
|
}
|
|
|
|
static int tap_open(char *ifname, int ifname_size)
|
|
{
|
|
char dev[10]="";
|
|
int fd;
|
|
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
|
|
fprintf(stderr, "Cannot allocate TAP device\n");
|
|
return -1;
|
|
}
|
|
pstrcpy(ifname, ifname_size, dev);
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
return fd;
|
|
}
|
|
#elif defined (_AIX)
|
|
static int tap_open(char *ifname, int ifname_size)
|
|
{
|
|
fprintf (stderr, "no tap on AIX\n");
|
|
return -1;
|
|
}
|
|
#else
|
|
static int tap_open(char *ifname, int ifname_size)
|
|
{
|
|
struct ifreq ifr;
|
|
int fd, ret;
|
|
|
|
TFR(fd = open("/dev/net/tun", O_RDWR));
|
|
if (fd < 0) {
|
|
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
|
return -1;
|
|
}
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
|
|
if (ifname[0] != '\0')
|
|
pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
|
|
else
|
|
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
|
|
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
|
if (ret != 0) {
|
|
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
pstrcpy(ifname, ifname_size, ifr.ifr_name);
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
return fd;
|
|
}
|
|
#endif
|
|
|
|
static int launch_script(const char *setup_script, const char *ifname, int fd)
|
|
{
|
|
sigset_t oldmask, mask;
|
|
int pid, status;
|
|
char *args[3];
|
|
char **parg;
|
|
|
|
sigemptyset(&mask);
|
|
sigaddset(&mask, SIGCHLD);
|
|
sigprocmask(SIG_BLOCK, &mask, &oldmask);
|
|
|
|
/* try to launch network script */
|
|
pid = fork();
|
|
if (pid == 0) {
|
|
int open_max = sysconf(_SC_OPEN_MAX), i;
|
|
|
|
for (i = 0; i < open_max; i++) {
|
|
if (i != STDIN_FILENO &&
|
|
i != STDOUT_FILENO &&
|
|
i != STDERR_FILENO &&
|
|
i != fd) {
|
|
close(i);
|
|
}
|
|
}
|
|
parg = args;
|
|
*parg++ = (char *)setup_script;
|
|
*parg++ = (char *)ifname;
|
|
*parg++ = NULL;
|
|
execv(setup_script, args);
|
|
_exit(1);
|
|
} else if (pid > 0) {
|
|
while (waitpid(pid, &status, 0) != pid) {
|
|
/* loop */
|
|
}
|
|
sigprocmask(SIG_SETMASK, &oldmask, NULL);
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
|
|
return 0;
|
|
}
|
|
}
|
|
fprintf(stderr, "%s: could not launch network script\n", setup_script);
|
|
return -1;
|
|
}
|
|
|
|
static int net_tap_init(VLANState *vlan, const char *model,
|
|
const char *name, const char *ifname1,
|
|
const char *setup_script, const char *down_script)
|
|
{
|
|
TAPState *s;
|
|
int fd;
|
|
char ifname[128];
|
|
|
|
if (ifname1 != NULL)
|
|
pstrcpy(ifname, sizeof(ifname), ifname1);
|
|
else
|
|
ifname[0] = '\0';
|
|
TFR(fd = tap_open(ifname, sizeof(ifname)));
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
if (!setup_script || !strcmp(setup_script, "no"))
|
|
setup_script = "";
|
|
if (setup_script[0] != '\0') {
|
|
if (launch_script(setup_script, ifname, fd))
|
|
return -1;
|
|
}
|
|
s = net_tap_fd_init(vlan, model, name, fd);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"ifname=%s,script=%s,downscript=%s",
|
|
ifname, setup_script, down_script);
|
|
if (down_script && strcmp(down_script, "no")) {
|
|
snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
|
|
snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* !_WIN32 */
|
|
|
|
#if defined(CONFIG_VDE)
|
|
typedef struct VDEState {
|
|
VLANClientState *vc;
|
|
VDECONN *vde;
|
|
} VDEState;
|
|
|
|
static void vde_to_qemu(void *opaque)
|
|
{
|
|
VDEState *s = opaque;
|
|
uint8_t buf[4096];
|
|
int size;
|
|
|
|
size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
|
|
if (size > 0) {
|
|
qemu_send_packet(s->vc, buf, size);
|
|
}
|
|
}
|
|
|
|
static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
VDEState *s = vc->opaque;
|
|
ssize ret;
|
|
|
|
do {
|
|
ret = vde_send(s->vde, (const char *)buf, size, 0);
|
|
} while (ret < 0 && errno == EINTR);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void vde_cleanup(VLANClientState *vc)
|
|
{
|
|
VDEState *s = vc->opaque;
|
|
qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
|
|
vde_close(s->vde);
|
|
qemu_free(s);
|
|
}
|
|
|
|
static int net_vde_init(VLANState *vlan, const char *model,
|
|
const char *name, const char *sock,
|
|
int port, const char *group, int mode)
|
|
{
|
|
VDEState *s;
|
|
char *init_group = strlen(group) ? (char *)group : NULL;
|
|
char *init_sock = strlen(sock) ? (char *)sock : NULL;
|
|
|
|
struct vde_open_args args = {
|
|
.port = port,
|
|
.group = init_group,
|
|
.mode = mode,
|
|
};
|
|
|
|
s = qemu_mallocz(sizeof(VDEState));
|
|
s->vde = vde_open(init_sock, (char *)"QEMU", &args);
|
|
if (!s->vde){
|
|
free(s);
|
|
return -1;
|
|
}
|
|
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
|
|
NULL, vde_cleanup, s);
|
|
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
|
|
sock, vde_datafd(s->vde));
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* network connection */
|
|
typedef struct NetSocketState {
|
|
VLANClientState *vc;
|
|
int fd;
|
|
int state; /* 0 = getting length, 1 = getting data */
|
|
unsigned int index;
|
|
unsigned int packet_len;
|
|
uint8_t buf[4096];
|
|
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
|
|
} NetSocketState;
|
|
|
|
typedef struct NetSocketListenState {
|
|
VLANState *vlan;
|
|
char *model;
|
|
char *name;
|
|
int fd;
|
|
} NetSocketListenState;
|
|
|
|
/* XXX: we consider we can send the whole packet without blocking */
|
|
static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
NetSocketState *s = vc->opaque;
|
|
uint32_t len;
|
|
len = htonl(size);
|
|
|
|
send_all(s->fd, (const uint8_t *)&len, sizeof(len));
|
|
return send_all(s->fd, buf, size);
|
|
}
|
|
|
|
static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
NetSocketState *s = vc->opaque;
|
|
|
|
return sendto(s->fd, buf, size, 0,
|
|
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
|
|
}
|
|
|
|
static void net_socket_send(void *opaque)
|
|
{
|
|
NetSocketState *s = opaque;
|
|
int size, err;
|
|
unsigned l;
|
|
uint8_t buf1[4096];
|
|
const uint8_t *buf;
|
|
|
|
size = recv(s->fd, buf1, sizeof(buf1), 0);
|
|
if (size < 0) {
|
|
err = socket_error();
|
|
if (err != EWOULDBLOCK)
|
|
goto eoc;
|
|
} else if (size == 0) {
|
|
/* end of connection */
|
|
eoc:
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
closesocket(s->fd);
|
|
return;
|
|
}
|
|
buf = buf1;
|
|
while (size > 0) {
|
|
/* reassemble a packet from the network */
|
|
switch(s->state) {
|
|
case 0:
|
|
l = 4 - s->index;
|
|
if (l > size)
|
|
l = size;
|
|
memcpy(s->buf + s->index, buf, l);
|
|
buf += l;
|
|
size -= l;
|
|
s->index += l;
|
|
if (s->index == 4) {
|
|
/* got length */
|
|
s->packet_len = ntohl(*(uint32_t *)s->buf);
|
|
s->index = 0;
|
|
s->state = 1;
|
|
}
|
|
break;
|
|
case 1:
|
|
l = s->packet_len - s->index;
|
|
if (l > size)
|
|
l = size;
|
|
if (s->index + l <= sizeof(s->buf)) {
|
|
memcpy(s->buf + s->index, buf, l);
|
|
} else {
|
|
fprintf(stderr, "serious error: oversized packet received,"
|
|
"connection terminated.\n");
|
|
s->state = 0;
|
|
goto eoc;
|
|
}
|
|
|
|
s->index += l;
|
|
buf += l;
|
|
size -= l;
|
|
if (s->index >= s->packet_len) {
|
|
qemu_send_packet(s->vc, s->buf, s->packet_len);
|
|
s->index = 0;
|
|
s->state = 0;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void net_socket_send_dgram(void *opaque)
|
|
{
|
|
NetSocketState *s = opaque;
|
|
int size;
|
|
|
|
size = recv(s->fd, s->buf, sizeof(s->buf), 0);
|
|
if (size < 0)
|
|
return;
|
|
if (size == 0) {
|
|
/* end of connection */
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
return;
|
|
}
|
|
qemu_send_packet(s->vc, s->buf, size);
|
|
}
|
|
|
|
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
|
|
{
|
|
struct ip_mreq imr;
|
|
int fd;
|
|
int val, ret;
|
|
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
|
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
|
inet_ntoa(mcastaddr->sin_addr),
|
|
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
|
return -1;
|
|
|
|
}
|
|
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (fd < 0) {
|
|
perror("socket(PF_INET, SOCK_DGRAM)");
|
|
return -1;
|
|
}
|
|
|
|
val = 1;
|
|
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
|
|
(const char *)&val, sizeof(val));
|
|
if (ret < 0) {
|
|
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
|
goto fail;
|
|
}
|
|
|
|
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
|
|
if (ret < 0) {
|
|
perror("bind");
|
|
goto fail;
|
|
}
|
|
|
|
/* Add host to multicast group */
|
|
imr.imr_multiaddr = mcastaddr->sin_addr;
|
|
imr.imr_interface.s_addr = htonl(INADDR_ANY);
|
|
|
|
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
|
|
(const char *)&imr, sizeof(struct ip_mreq));
|
|
if (ret < 0) {
|
|
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
|
goto fail;
|
|
}
|
|
|
|
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
|
val = 1;
|
|
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
|
|
(const char *)&val, sizeof(val));
|
|
if (ret < 0) {
|
|
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
|
goto fail;
|
|
}
|
|
|
|
socket_set_nonblock(fd);
|
|
return fd;
|
|
fail:
|
|
if (fd >= 0)
|
|
closesocket(fd);
|
|
return -1;
|
|
}
|
|
|
|
static void net_socket_cleanup(VLANClientState *vc)
|
|
{
|
|
NetSocketState *s = vc->opaque;
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
}
|
|
|
|
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
int fd, int is_connected)
|
|
{
|
|
struct sockaddr_in saddr;
|
|
int newfd;
|
|
socklen_t saddr_len;
|
|
NetSocketState *s;
|
|
|
|
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
|
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
|
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
|
*/
|
|
|
|
if (is_connected) {
|
|
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
|
|
/* must be bound */
|
|
if (saddr.sin_addr.s_addr==0) {
|
|
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
|
fd);
|
|
return NULL;
|
|
}
|
|
/* clone dgram socket */
|
|
newfd = net_socket_mcast_create(&saddr);
|
|
if (newfd < 0) {
|
|
/* error already reported by net_socket_mcast_create() */
|
|
close(fd);
|
|
return NULL;
|
|
}
|
|
/* clone newfd to fd, close newfd */
|
|
dup2(newfd, fd);
|
|
close(newfd);
|
|
|
|
} else {
|
|
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
|
fd, strerror(errno));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
s = qemu_mallocz(sizeof(NetSocketState));
|
|
s->fd = fd;
|
|
|
|
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
|
|
NULL, net_socket_cleanup, s);
|
|
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
|
|
|
/* mcast: save bound address as dst */
|
|
if (is_connected) s->dgram_dst=saddr;
|
|
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"socket: fd=%d (%s mcast=%s:%d)",
|
|
fd, is_connected? "cloned" : "",
|
|
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
return s;
|
|
}
|
|
|
|
static void net_socket_connect(void *opaque)
|
|
{
|
|
NetSocketState *s = opaque;
|
|
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
|
}
|
|
|
|
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
int fd, int is_connected)
|
|
{
|
|
NetSocketState *s;
|
|
s = qemu_mallocz(sizeof(NetSocketState));
|
|
s->fd = fd;
|
|
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
|
|
NULL, net_socket_cleanup, s);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"socket: fd=%d", fd);
|
|
if (is_connected) {
|
|
net_socket_connect(s);
|
|
} else {
|
|
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
static NetSocketState *net_socket_fd_init(VLANState *vlan,
|
|
const char *model, const char *name,
|
|
int fd, int is_connected)
|
|
{
|
|
int so_type=-1, optlen=sizeof(so_type);
|
|
|
|
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
|
|
(socklen_t *)&optlen)< 0) {
|
|
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
|
return NULL;
|
|
}
|
|
switch(so_type) {
|
|
case SOCK_DGRAM:
|
|
return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
|
|
case SOCK_STREAM:
|
|
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
|
default:
|
|
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
|
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
|
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void net_socket_accept(void *opaque)
|
|
{
|
|
NetSocketListenState *s = opaque;
|
|
NetSocketState *s1;
|
|
struct sockaddr_in saddr;
|
|
socklen_t len;
|
|
int fd;
|
|
|
|
for(;;) {
|
|
len = sizeof(saddr);
|
|
fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
|
|
if (fd < 0 && errno != EINTR) {
|
|
return;
|
|
} else if (fd >= 0) {
|
|
break;
|
|
}
|
|
}
|
|
s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
|
|
if (!s1) {
|
|
closesocket(fd);
|
|
} else {
|
|
snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
|
|
"socket: connection from %s:%d",
|
|
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
}
|
|
}
|
|
|
|
static int net_socket_listen_init(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
const char *host_str)
|
|
{
|
|
NetSocketListenState *s;
|
|
int fd, val, ret;
|
|
struct sockaddr_in saddr;
|
|
|
|
if (parse_host_port(&saddr, host_str) < 0)
|
|
return -1;
|
|
|
|
s = qemu_mallocz(sizeof(NetSocketListenState));
|
|
|
|
fd = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (fd < 0) {
|
|
perror("socket");
|
|
return -1;
|
|
}
|
|
socket_set_nonblock(fd);
|
|
|
|
/* allow fast reuse */
|
|
val = 1;
|
|
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
|
|
|
|
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
|
|
if (ret < 0) {
|
|
perror("bind");
|
|
return -1;
|
|
}
|
|
ret = listen(fd, 0);
|
|
if (ret < 0) {
|
|
perror("listen");
|
|
return -1;
|
|
}
|
|
s->vlan = vlan;
|
|
s->model = strdup(model);
|
|
s->name = name ? strdup(name) : NULL;
|
|
s->fd = fd;
|
|
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
|
return 0;
|
|
}
|
|
|
|
static int net_socket_connect_init(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
const char *host_str)
|
|
{
|
|
NetSocketState *s;
|
|
int fd, connected, ret, err;
|
|
struct sockaddr_in saddr;
|
|
|
|
if (parse_host_port(&saddr, host_str) < 0)
|
|
return -1;
|
|
|
|
fd = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (fd < 0) {
|
|
perror("socket");
|
|
return -1;
|
|
}
|
|
socket_set_nonblock(fd);
|
|
|
|
connected = 0;
|
|
for(;;) {
|
|
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
|
|
if (ret < 0) {
|
|
err = socket_error();
|
|
if (err == EINTR || err == EWOULDBLOCK) {
|
|
} else if (err == EINPROGRESS) {
|
|
break;
|
|
#ifdef _WIN32
|
|
} else if (err == WSAEALREADY) {
|
|
break;
|
|
#endif
|
|
} else {
|
|
perror("connect");
|
|
closesocket(fd);
|
|
return -1;
|
|
}
|
|
} else {
|
|
connected = 1;
|
|
break;
|
|
}
|
|
}
|
|
s = net_socket_fd_init(vlan, model, name, fd, connected);
|
|
if (!s)
|
|
return -1;
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"socket: connect to %s:%d",
|
|
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
return 0;
|
|
}
|
|
|
|
static int net_socket_mcast_init(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
const char *host_str)
|
|
{
|
|
NetSocketState *s;
|
|
int fd;
|
|
struct sockaddr_in saddr;
|
|
|
|
if (parse_host_port(&saddr, host_str) < 0)
|
|
return -1;
|
|
|
|
|
|
fd = net_socket_mcast_create(&saddr);
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
s = net_socket_fd_init(vlan, model, name, fd, 0);
|
|
if (!s)
|
|
return -1;
|
|
|
|
s->dgram_dst = saddr;
|
|
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"socket: mcast=%s:%d",
|
|
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
return 0;
|
|
|
|
}
|
|
|
|
typedef struct DumpState {
|
|
VLANClientState *pcap_vc;
|
|
int fd;
|
|
int pcap_caplen;
|
|
} DumpState;
|
|
|
|
#define PCAP_MAGIC 0xa1b2c3d4
|
|
|
|
struct pcap_file_hdr {
|
|
uint32_t magic;
|
|
uint16_t version_major;
|
|
uint16_t version_minor;
|
|
int32_t thiszone;
|
|
uint32_t sigfigs;
|
|
uint32_t snaplen;
|
|
uint32_t linktype;
|
|
};
|
|
|
|
struct pcap_sf_pkthdr {
|
|
struct {
|
|
int32_t tv_sec;
|
|
int32_t tv_usec;
|
|
} ts;
|
|
uint32_t caplen;
|
|
uint32_t len;
|
|
};
|
|
|
|
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
DumpState *s = vc->opaque;
|
|
struct pcap_sf_pkthdr hdr;
|
|
int64_t ts;
|
|
int caplen;
|
|
|
|
/* Early return in case of previous error. */
|
|
if (s->fd < 0) {
|
|
return size;
|
|
}
|
|
|
|
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
|
|
caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
|
|
|
|
hdr.ts.tv_sec = ts / 1000000;
|
|
hdr.ts.tv_usec = ts % 1000000;
|
|
hdr.caplen = caplen;
|
|
hdr.len = size;
|
|
if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
|
|
write(s->fd, buf, caplen) != caplen) {
|
|
qemu_log("-net dump write error - stop dump\n");
|
|
close(s->fd);
|
|
s->fd = -1;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void net_dump_cleanup(VLANClientState *vc)
|
|
{
|
|
DumpState *s = vc->opaque;
|
|
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
}
|
|
|
|
static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
|
|
const char *name, const char *filename, int len)
|
|
{
|
|
struct pcap_file_hdr hdr;
|
|
DumpState *s;
|
|
|
|
s = qemu_malloc(sizeof(DumpState));
|
|
|
|
s->fd = open(filename, O_CREAT | O_WRONLY, 0644);
|
|
if (s->fd < 0) {
|
|
config_error(mon, "-net dump: can't open %s\n", filename);
|
|
return -1;
|
|
}
|
|
|
|
s->pcap_caplen = len;
|
|
|
|
hdr.magic = PCAP_MAGIC;
|
|
hdr.version_major = 2;
|
|
hdr.version_minor = 4;
|
|
hdr.thiszone = 0;
|
|
hdr.sigfigs = 0;
|
|
hdr.snaplen = s->pcap_caplen;
|
|
hdr.linktype = 1;
|
|
|
|
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
|
|
config_error(mon, "-net dump write error: %s\n", strerror(errno));
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
return -1;
|
|
}
|
|
|
|
s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
|
|
net_dump_cleanup, s);
|
|
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
|
|
"dump to %s (len=%d)", filename, len);
|
|
return 0;
|
|
}
|
|
|
|
/* find or alloc a new VLAN */
|
|
VLANState *qemu_find_vlan(int id)
|
|
{
|
|
VLANState **pvlan, *vlan;
|
|
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
|
|
if (vlan->id == id)
|
|
return vlan;
|
|
}
|
|
vlan = qemu_mallocz(sizeof(VLANState));
|
|
vlan->id = id;
|
|
vlan->next = NULL;
|
|
pvlan = &first_vlan;
|
|
while (*pvlan != NULL)
|
|
pvlan = &(*pvlan)->next;
|
|
*pvlan = vlan;
|
|
return vlan;
|
|
}
|
|
|
|
static int nic_get_free_idx(void)
|
|
{
|
|
int index;
|
|
|
|
for (index = 0; index < MAX_NICS; index++)
|
|
if (!nd_table[index].used)
|
|
return index;
|
|
return -1;
|
|
}
|
|
|
|
void qemu_check_nic_model(NICInfo *nd, const char *model)
|
|
{
|
|
const char *models[2];
|
|
|
|
models[0] = model;
|
|
models[1] = NULL;
|
|
|
|
qemu_check_nic_model_list(nd, models, model);
|
|
}
|
|
|
|
void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
|
|
const char *default_model)
|
|
{
|
|
int i, exit_status = 0;
|
|
|
|
if (!nd->model)
|
|
nd->model = strdup(default_model);
|
|
|
|
if (strcmp(nd->model, "?") != 0) {
|
|
for (i = 0 ; models[i]; i++)
|
|
if (strcmp(nd->model, models[i]) == 0)
|
|
return;
|
|
|
|
fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
|
|
exit_status = 1;
|
|
}
|
|
|
|
fprintf(stderr, "qemu: Supported NIC models: ");
|
|
for (i = 0 ; models[i]; i++)
|
|
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
|
|
|
|
exit(exit_status);
|
|
}
|
|
|
|
int net_client_init(Monitor *mon, const char *device, const char *p)
|
|
{
|
|
static const char * const fd_params[] = {
|
|
"vlan", "name", "fd", NULL
|
|
};
|
|
char buf[1024];
|
|
int vlan_id, ret;
|
|
VLANState *vlan;
|
|
char *name = NULL;
|
|
|
|
vlan_id = 0;
|
|
if (get_param_value(buf, sizeof(buf), "vlan", p)) {
|
|
vlan_id = strtol(buf, NULL, 0);
|
|
}
|
|
vlan = qemu_find_vlan(vlan_id);
|
|
|
|
if (get_param_value(buf, sizeof(buf), "name", p)) {
|
|
name = qemu_strdup(buf);
|
|
}
|
|
if (!strcmp(device, "nic")) {
|
|
static const char * const nic_params[] = {
|
|
"vlan", "name", "macaddr", "model", NULL
|
|
};
|
|
NICInfo *nd;
|
|
uint8_t *macaddr;
|
|
int idx = nic_get_free_idx();
|
|
|
|
if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (idx == -1 || nb_nics >= MAX_NICS) {
|
|
config_error(mon, "Too Many NICs\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
nd = &nd_table[idx];
|
|
macaddr = nd->macaddr;
|
|
macaddr[0] = 0x52;
|
|
macaddr[1] = 0x54;
|
|
macaddr[2] = 0x00;
|
|
macaddr[3] = 0x12;
|
|
macaddr[4] = 0x34;
|
|
macaddr[5] = 0x56 + idx;
|
|
|
|
if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
|
|
if (parse_macaddr(macaddr, buf) < 0) {
|
|
config_error(mon, "invalid syntax for ethernet address\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "model", p)) {
|
|
nd->model = strdup(buf);
|
|
}
|
|
nd->vlan = vlan;
|
|
nd->name = name;
|
|
nd->used = 1;
|
|
name = NULL;
|
|
nb_nics++;
|
|
vlan->nb_guest_devs++;
|
|
ret = idx;
|
|
} else
|
|
if (!strcmp(device, "none")) {
|
|
if (*p != '\0') {
|
|
config_error(mon, "'none' takes no parameters\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
/* does nothing. It is needed to signal that no network cards
|
|
are wanted */
|
|
ret = 0;
|
|
} else
|
|
#ifdef CONFIG_SLIRP
|
|
if (!strcmp(device, "user")) {
|
|
static const char * const slirp_params[] = {
|
|
"vlan", "name", "hostname", "restrict", "ip", NULL
|
|
};
|
|
int restricted = 0;
|
|
char *ip = NULL;
|
|
|
|
if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "hostname", p)) {
|
|
pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "restrict", p)) {
|
|
restricted = (buf[0] == 'y') ? 1 : 0;
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "ip", p)) {
|
|
ip = qemu_strdup(buf);
|
|
}
|
|
vlan->nb_host_devs++;
|
|
ret = net_slirp_init(vlan, device, name, restricted, ip);
|
|
qemu_free(ip);
|
|
} else if (!strcmp(device, "channel")) {
|
|
long port;
|
|
char name[20], *devname;
|
|
struct VMChannel *vmc;
|
|
|
|
port = strtol(p, &devname, 10);
|
|
devname++;
|
|
if (port < 1 || port > 65535) {
|
|
config_error(mon, "vmchannel wrong port number\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
vmc = malloc(sizeof(struct VMChannel));
|
|
snprintf(name, 20, "vmchannel%ld", port);
|
|
vmc->hd = qemu_chr_open(name, devname, NULL);
|
|
if (!vmc->hd) {
|
|
config_error(mon, "could not open vmchannel device '%s'\n",
|
|
devname);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
vmc->port = port;
|
|
slirp_add_exec(3, vmc->hd, 4, port);
|
|
qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
|
|
NULL, vmc);
|
|
ret = 0;
|
|
} else
|
|
#endif
|
|
#ifdef _WIN32
|
|
if (!strcmp(device, "tap")) {
|
|
static const char * const tap_params[] = {
|
|
"vlan", "name", "ifname", NULL
|
|
};
|
|
char ifname[64];
|
|
|
|
if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
|
|
config_error(mon, "tap: no interface name\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
vlan->nb_host_devs++;
|
|
ret = tap_win32_init(vlan, device, name, ifname);
|
|
} else
|
|
#elif defined (_AIX)
|
|
#else
|
|
if (!strcmp(device, "tap")) {
|
|
char ifname[64], chkbuf[64];
|
|
char setup_script[1024], down_script[1024];
|
|
int fd;
|
|
vlan->nb_host_devs++;
|
|
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
|
|
if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
fd = strtol(buf, NULL, 0);
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
net_tap_fd_init(vlan, device, name, fd);
|
|
ret = 0;
|
|
} else {
|
|
static const char * const tap_params[] = {
|
|
"vlan", "name", "ifname", "script", "downscript", NULL
|
|
};
|
|
if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
|
|
ifname[0] = '\0';
|
|
}
|
|
if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
|
|
pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
|
|
}
|
|
if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
|
|
pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
|
|
}
|
|
ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
|
|
}
|
|
} else
|
|
#endif
|
|
if (!strcmp(device, "socket")) {
|
|
char chkbuf[64];
|
|
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
|
|
int fd;
|
|
if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
fd = strtol(buf, NULL, 0);
|
|
ret = -1;
|
|
if (net_socket_fd_init(vlan, device, name, fd, 1))
|
|
ret = 0;
|
|
} else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
|
|
static const char * const listen_params[] = {
|
|
"vlan", "name", "listen", NULL
|
|
};
|
|
if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
ret = net_socket_listen_init(vlan, device, name, buf);
|
|
} else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
|
|
static const char * const connect_params[] = {
|
|
"vlan", "name", "connect", NULL
|
|
};
|
|
if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
ret = net_socket_connect_init(vlan, device, name, buf);
|
|
} else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
|
|
static const char * const mcast_params[] = {
|
|
"vlan", "name", "mcast", NULL
|
|
};
|
|
if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
ret = net_socket_mcast_init(vlan, device, name, buf);
|
|
} else {
|
|
config_error(mon, "Unknown socket options: %s\n", p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
vlan->nb_host_devs++;
|
|
} else
|
|
#ifdef CONFIG_VDE
|
|
if (!strcmp(device, "vde")) {
|
|
static const char * const vde_params[] = {
|
|
"vlan", "name", "sock", "port", "group", "mode", NULL
|
|
};
|
|
char vde_sock[1024], vde_group[512];
|
|
int vde_port, vde_mode;
|
|
|
|
if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
|
|
config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
vlan->nb_host_devs++;
|
|
if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
|
|
vde_sock[0] = '\0';
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
|
|
vde_port = strtol(buf, NULL, 10);
|
|
} else {
|
|
vde_port = 0;
|
|
}
|
|
if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
|
|
vde_group[0] = '\0';
|
|
}
|
|
if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
|
|
vde_mode = strtol(buf, NULL, 8);
|
|
} else {
|
|
vde_mode = 0700;
|
|
}
|
|
ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
|
|
} else
|
|
#endif
|
|
if (!strcmp(device, "dump")) {
|
|
int len = 65536;
|
|
|
|
if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
|
|
len = strtol(buf, NULL, 0);
|
|
}
|
|
if (!get_param_value(buf, sizeof(buf), "file", p)) {
|
|
snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
|
|
}
|
|
ret = net_dump_init(mon, vlan, device, name, buf, len);
|
|
} else {
|
|
config_error(mon, "Unknown network device: %s\n", device);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (ret < 0) {
|
|
config_error(mon, "Could not initialize device '%s'\n", device);
|
|
}
|
|
out:
|
|
qemu_free(name);
|
|
return ret;
|
|
}
|
|
|
|
void net_client_uninit(NICInfo *nd)
|
|
{
|
|
nd->vlan->nb_guest_devs--;
|
|
nb_nics--;
|
|
nd->used = 0;
|
|
free((void *)nd->model);
|
|
}
|
|
|
|
static int net_host_check_device(const char *device)
|
|
{
|
|
int i;
|
|
const char *valid_param_list[] = { "tap", "socket", "dump"
|
|
#ifdef CONFIG_SLIRP
|
|
,"user"
|
|
#endif
|
|
#ifdef CONFIG_VDE
|
|
,"vde"
|
|
#endif
|
|
};
|
|
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
|
|
if (!strncmp(valid_param_list[i], device,
|
|
strlen(valid_param_list[i])))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void net_host_device_add(Monitor *mon, const char *device, const char *opts)
|
|
{
|
|
if (!net_host_check_device(device)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
if (net_client_init(mon, device, opts ? opts : "") < 0) {
|
|
monitor_printf(mon, "adding host network device %s failed\n", device);
|
|
}
|
|
}
|
|
|
|
void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc;
|
|
|
|
vlan = qemu_find_vlan(vlan_id);
|
|
|
|
for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
|
|
if (!strcmp(vc->name, device)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!vc) {
|
|
monitor_printf(mon, "can't find device %s\n", device);
|
|
return;
|
|
}
|
|
if (!net_host_check_device(vc->model)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
|
|
int net_client_parse(const char *str)
|
|
{
|
|
const char *p;
|
|
char *q;
|
|
char device[64];
|
|
|
|
p = str;
|
|
q = device;
|
|
while (*p != '\0' && *p != ',') {
|
|
if ((q - device) < sizeof(device) - 1)
|
|
*q++ = *p;
|
|
p++;
|
|
}
|
|
*q = '\0';
|
|
if (*p == ',')
|
|
p++;
|
|
|
|
return net_client_init(NULL, device, p);
|
|
}
|
|
|
|
void do_info_network(Monitor *mon)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc;
|
|
|
|
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
|
|
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
|
for(vc = vlan->first_client; vc != NULL; vc = vc->next)
|
|
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
|
}
|
|
}
|
|
|
|
int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc = NULL;
|
|
|
|
for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
|
|
for (vc = vlan->first_client; vc != NULL; vc = vc->next)
|
|
if (strcmp(vc->name, name) == 0)
|
|
goto done;
|
|
done:
|
|
|
|
if (!vc) {
|
|
monitor_printf(mon, "could not find network device '%s'", name);
|
|
return 0;
|
|
}
|
|
|
|
if (strcmp(up_or_down, "up") == 0)
|
|
vc->link_down = 0;
|
|
else if (strcmp(up_or_down, "down") == 0)
|
|
vc->link_down = 1;
|
|
else
|
|
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
|
"valid\n", up_or_down);
|
|
|
|
if (vc->link_status_changed)
|
|
vc->link_status_changed(vc);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void net_cleanup(void)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
/* close network clients */
|
|
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
|
|
VLANClientState *vc = vlan->first_client;
|
|
|
|
while (vc) {
|
|
VLANClientState *next = vc->next;
|
|
|
|
qemu_del_vlan_client(vc);
|
|
|
|
vc = next;
|
|
}
|
|
}
|
|
}
|
|
|
|
void net_client_check(void)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
|
|
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
|
|
continue;
|
|
if (vlan->nb_guest_devs == 0)
|
|
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
|
if (vlan->nb_host_devs == 0)
|
|
fprintf(stderr,
|
|
"Warning: vlan %d is not connected to host network\n",
|
|
vlan->id);
|
|
}
|
|
}
|