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/*
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|---|---|
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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| 8 |
* 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> |
| 28 |
#include <errno.h> |
| 29 |
#include <sys/time.h> |
| 30 |
#include <zlib.h> |
| 31 |
|
| 32 |
/* Needed early for CONFIG_BSD etc. */
|
| 33 |
#include "config-host.h" |
| 34 |
|
| 35 |
#ifndef _WIN32
|
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#include <sys/times.h> |
| 37 |
#include <sys/wait.h> |
| 38 |
#include <termios.h> |
| 39 |
#include <sys/mman.h> |
| 40 |
#include <sys/ioctl.h> |
| 41 |
#include <sys/resource.h> |
| 42 |
#include <sys/socket.h> |
| 43 |
#include <netinet/in.h> |
| 44 |
#include <net/if.h> |
| 45 |
#ifdef __NetBSD__
|
| 46 |
#include <net/if_tap.h> |
| 47 |
#endif
|
| 48 |
#ifdef __linux__
|
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#include "tap-linux.h" |
| 50 |
#endif
|
| 51 |
#include <arpa/inet.h> |
| 52 |
#include <dirent.h> |
| 53 |
#include <netdb.h> |
| 54 |
#include <sys/select.h> |
| 55 |
#ifdef CONFIG_BSD
|
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#include <sys/stat.h> |
| 57 |
#if defined(__FreeBSD__) || defined(__DragonFly__)
|
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#include <libutil.h> |
| 59 |
#else
|
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#include <util.h> |
| 61 |
#endif
|
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#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
|
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#include <freebsd/stdlib.h> |
| 64 |
#else
|
| 65 |
#ifdef __linux__
|
| 66 |
#include <pty.h> |
| 67 |
#include <malloc.h> |
| 68 |
#include <linux/rtc.h> |
| 69 |
|
| 70 |
/* 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 |
|
| 75 |
#include <linux/ppdev.h> |
| 76 |
#include <linux/parport.h> |
| 77 |
#endif
|
| 78 |
#ifdef __sun__
|
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#include <sys/stat.h> |
| 80 |
#include <sys/ethernet.h> |
| 81 |
#include <sys/sockio.h> |
| 82 |
#include <netinet/arp.h> |
| 83 |
#include <netinet/in.h> |
| 84 |
#include <netinet/in_systm.h> |
| 85 |
#include <netinet/ip.h> |
| 86 |
#include <netinet/ip_icmp.h> // must come after ip.h |
| 87 |
#include <netinet/udp.h> |
| 88 |
#include <netinet/tcp.h> |
| 89 |
#include <net/if.h> |
| 90 |
#include <syslog.h> |
| 91 |
#include <stropts.h> |
| 92 |
#endif
|
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#endif
|
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#endif
|
| 95 |
|
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#if defined(__OpenBSD__)
|
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#include <util.h> |
| 98 |
#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" |
| 106 |
#include "monitor.h" |
| 107 |
#include "sysemu.h" |
| 108 |
#include "qemu-timer.h" |
| 109 |
#include "qemu-char.h" |
| 110 |
#include "audio/audio.h" |
| 111 |
#include "qemu_socket.h" |
| 112 |
#include "qemu-log.h" |
| 113 |
#include "qemu-config.h" |
| 114 |
|
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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++) { |
| 134 |
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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} |
| 139 |
fprintf(f, " ");
|
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for(j=0;j<len;j++) { |
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c = buf[i+j]; |
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if (c < ' ' || c > '~') |
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c = '.';
|
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fprintf(f, "%c", c);
|
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} |
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fprintf(f, "\n");
|
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} |
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} |
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#endif
|
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|
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static int 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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|
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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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} |
| 179 |
|
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return -1; |
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} |
| 182 |
|
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
| 184 |
{
|
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const char *p, *p1; |
| 186 |
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); |
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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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} |
| 202 |
|
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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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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,','))) |
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*ptr = '\0';
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|
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if ((src_str = strchr(input_str,'@'))) { |
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*src_str = '\0';
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src_str++; |
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} |
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if (parse_host_port(haddr, host_str) < 0) |
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goto fail;
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src_str2 = src_str; |
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if (!src_str || *src_str == '\0') |
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src_str2 = ":0";
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|
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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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|
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fail:
|
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free(str); |
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return -1; |
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} |
| 243 |
|
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int parse_host_port(struct sockaddr_in *saddr, const char *str) |
| 245 |
{
|
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char buf[512]; |
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struct hostent *he;
|
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const char *p, *r; |
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int port;
|
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|
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p = str; |
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
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return -1; |
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saddr->sin_family = AF_INET; |
| 255 |
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; |
| 261 |
} 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); |
| 268 |
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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} |
| 273 |
|
| 274 |
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]); |
| 281 |
} |
| 282 |
|
| 283 |
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 |
|
| 288 |
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 |
|
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return qemu_strdup(buf);
|
| 317 |
} |
| 318 |
|
| 319 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 320 |
unsigned flags,
|
| 321 |
const uint8_t *data,
|
| 322 |
size_t size, |
| 323 |
void *opaque);
|
| 324 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 325 |
unsigned flags,
|
| 326 |
const struct iovec *iov, |
| 327 |
int iovcnt,
|
| 328 |
void *opaque);
|
| 329 |
|
| 330 |
VLANClientState *qemu_new_vlan_client(net_client_type type, |
| 331 |
VLANState *vlan, |
| 332 |
VLANClientState *peer, |
| 333 |
const char *model, |
| 334 |
const char *name, |
| 335 |
NetCanReceive *can_receive, |
| 336 |
NetReceive *receive, |
| 337 |
NetReceive *receive_raw, |
| 338 |
NetReceiveIOV *receive_iov, |
| 339 |
NetCleanup *cleanup, |
| 340 |
void *opaque)
|
| 341 |
{
|
| 342 |
VLANClientState *vc; |
| 343 |
|
| 344 |
vc = qemu_mallocz(sizeof(VLANClientState));
|
| 345 |
|
| 346 |
vc->type = type; |
| 347 |
vc->model = qemu_strdup(model); |
| 348 |
if (name)
|
| 349 |
vc->name = qemu_strdup(name); |
| 350 |
else
|
| 351 |
vc->name = assign_name(vc, model); |
| 352 |
vc->can_receive = can_receive; |
| 353 |
vc->receive = receive; |
| 354 |
vc->receive_raw = receive_raw; |
| 355 |
vc->receive_iov = receive_iov; |
| 356 |
vc->cleanup = cleanup; |
| 357 |
vc->opaque = opaque; |
| 358 |
|
| 359 |
if (vlan) {
|
| 360 |
assert(!peer); |
| 361 |
vc->vlan = vlan; |
| 362 |
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
| 363 |
} else {
|
| 364 |
if (peer) {
|
| 365 |
vc->peer = peer; |
| 366 |
peer->peer = vc; |
| 367 |
} |
| 368 |
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
| 369 |
|
| 370 |
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
| 371 |
qemu_deliver_packet_iov, |
| 372 |
vc); |
| 373 |
} |
| 374 |
|
| 375 |
return vc;
|
| 376 |
} |
| 377 |
|
| 378 |
void qemu_del_vlan_client(VLANClientState *vc)
|
| 379 |
{
|
| 380 |
if (vc->vlan) {
|
| 381 |
QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
| 382 |
} else {
|
| 383 |
if (vc->send_queue) {
|
| 384 |
qemu_del_net_queue(vc->send_queue); |
| 385 |
} |
| 386 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
| 387 |
if (vc->peer) {
|
| 388 |
vc->peer->peer = NULL;
|
| 389 |
} |
| 390 |
} |
| 391 |
|
| 392 |
if (vc->cleanup) {
|
| 393 |
vc->cleanup(vc); |
| 394 |
} |
| 395 |
|
| 396 |
qemu_free(vc->name); |
| 397 |
qemu_free(vc->model); |
| 398 |
qemu_free(vc); |
| 399 |
} |
| 400 |
|
| 401 |
VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
|
| 402 |
{
|
| 403 |
VLANClientState *vc; |
| 404 |
|
| 405 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 406 |
if (vc->opaque == opaque) {
|
| 407 |
return vc;
|
| 408 |
} |
| 409 |
} |
| 410 |
|
| 411 |
return NULL; |
| 412 |
} |
| 413 |
|
| 414 |
static VLANClientState *
|
| 415 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
| 416 |
const char *client_str) |
| 417 |
{
|
| 418 |
VLANState *vlan; |
| 419 |
VLANClientState *vc; |
| 420 |
|
| 421 |
vlan = qemu_find_vlan(vlan_id, 0);
|
| 422 |
if (!vlan) {
|
| 423 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
| 424 |
return NULL; |
| 425 |
} |
| 426 |
|
| 427 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 428 |
if (!strcmp(vc->name, client_str)) {
|
| 429 |
break;
|
| 430 |
} |
| 431 |
} |
| 432 |
if (!vc) {
|
| 433 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
| 434 |
client_str, vlan_id); |
| 435 |
} |
| 436 |
|
| 437 |
return vc;
|
| 438 |
} |
| 439 |
|
| 440 |
int qemu_can_send_packet(VLANClientState *sender)
|
| 441 |
{
|
| 442 |
VLANState *vlan = sender->vlan; |
| 443 |
VLANClientState *vc; |
| 444 |
|
| 445 |
if (sender->peer) {
|
| 446 |
if (!sender->peer->can_receive ||
|
| 447 |
sender->peer->can_receive(sender->peer)) {
|
| 448 |
return 1; |
| 449 |
} else {
|
| 450 |
return 0; |
| 451 |
} |
| 452 |
} |
| 453 |
|
| 454 |
if (!sender->vlan) {
|
| 455 |
return 1; |
| 456 |
} |
| 457 |
|
| 458 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 459 |
if (vc == sender) {
|
| 460 |
continue;
|
| 461 |
} |
| 462 |
|
| 463 |
/* no can_receive() handler, they can always receive */
|
| 464 |
if (!vc->can_receive || vc->can_receive(vc)) {
|
| 465 |
return 1; |
| 466 |
} |
| 467 |
} |
| 468 |
return 0; |
| 469 |
} |
| 470 |
|
| 471 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 472 |
unsigned flags,
|
| 473 |
const uint8_t *data,
|
| 474 |
size_t size, |
| 475 |
void *opaque)
|
| 476 |
{
|
| 477 |
VLANClientState *vc = opaque; |
| 478 |
|
| 479 |
if (vc->link_down) {
|
| 480 |
return size;
|
| 481 |
} |
| 482 |
|
| 483 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
|
| 484 |
return vc->receive_raw(vc, data, size);
|
| 485 |
else
|
| 486 |
return vc->receive(vc, data, size);
|
| 487 |
} |
| 488 |
|
| 489 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
| 490 |
unsigned flags,
|
| 491 |
const uint8_t *buf,
|
| 492 |
size_t size, |
| 493 |
void *opaque)
|
| 494 |
{
|
| 495 |
VLANState *vlan = opaque; |
| 496 |
VLANClientState *vc; |
| 497 |
int ret = -1; |
| 498 |
|
| 499 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 500 |
ssize_t len; |
| 501 |
|
| 502 |
if (vc == sender) {
|
| 503 |
continue;
|
| 504 |
} |
| 505 |
|
| 506 |
if (vc->link_down) {
|
| 507 |
ret = size; |
| 508 |
continue;
|
| 509 |
} |
| 510 |
|
| 511 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
|
| 512 |
len = vc->receive_raw(vc, buf, size); |
| 513 |
else
|
| 514 |
len = vc->receive(vc, buf, size); |
| 515 |
|
| 516 |
ret = (ret >= 0) ? ret : len;
|
| 517 |
} |
| 518 |
|
| 519 |
return ret;
|
| 520 |
} |
| 521 |
|
| 522 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
| 523 |
{
|
| 524 |
NetQueue *queue; |
| 525 |
|
| 526 |
if (!vc->peer && !vc->vlan) {
|
| 527 |
return;
|
| 528 |
} |
| 529 |
|
| 530 |
if (vc->peer) {
|
| 531 |
queue = vc->peer->send_queue; |
| 532 |
} else {
|
| 533 |
queue = vc->vlan->send_queue; |
| 534 |
} |
| 535 |
|
| 536 |
qemu_net_queue_purge(queue, vc); |
| 537 |
} |
| 538 |
|
| 539 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
| 540 |
{
|
| 541 |
NetQueue *queue; |
| 542 |
|
| 543 |
if (vc->vlan) {
|
| 544 |
queue = vc->vlan->send_queue; |
| 545 |
} else {
|
| 546 |
queue = vc->send_queue; |
| 547 |
} |
| 548 |
|
| 549 |
qemu_net_queue_flush(queue); |
| 550 |
} |
| 551 |
|
| 552 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
| 553 |
unsigned flags,
|
| 554 |
const uint8_t *buf, int size, |
| 555 |
NetPacketSent *sent_cb) |
| 556 |
{
|
| 557 |
NetQueue *queue; |
| 558 |
|
| 559 |
#ifdef DEBUG_NET
|
| 560 |
printf("qemu_send_packet_async:\n");
|
| 561 |
hex_dump(stdout, buf, size); |
| 562 |
#endif
|
| 563 |
|
| 564 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 565 |
return size;
|
| 566 |
} |
| 567 |
|
| 568 |
if (sender->peer) {
|
| 569 |
queue = sender->peer->send_queue; |
| 570 |
} else {
|
| 571 |
queue = sender->vlan->send_queue; |
| 572 |
} |
| 573 |
|
| 574 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
| 575 |
} |
| 576 |
|
| 577 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
| 578 |
const uint8_t *buf, int size, |
| 579 |
NetPacketSent *sent_cb) |
| 580 |
{
|
| 581 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
| 582 |
buf, size, sent_cb); |
| 583 |
} |
| 584 |
|
| 585 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
| 586 |
{
|
| 587 |
qemu_send_packet_async(vc, buf, size, NULL);
|
| 588 |
} |
| 589 |
|
| 590 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
| 591 |
{
|
| 592 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
| 593 |
buf, size, NULL);
|
| 594 |
} |
| 595 |
|
| 596 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
| 597 |
int iovcnt)
|
| 598 |
{
|
| 599 |
uint8_t buffer[4096];
|
| 600 |
size_t offset = 0;
|
| 601 |
int i;
|
| 602 |
|
| 603 |
for (i = 0; i < iovcnt; i++) { |
| 604 |
size_t len; |
| 605 |
|
| 606 |
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
| 607 |
memcpy(buffer + offset, iov[i].iov_base, len); |
| 608 |
offset += len; |
| 609 |
} |
| 610 |
|
| 611 |
return vc->receive(vc, buffer, offset);
|
| 612 |
} |
| 613 |
|
| 614 |
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
| 615 |
{
|
| 616 |
size_t offset = 0;
|
| 617 |
int i;
|
| 618 |
|
| 619 |
for (i = 0; i < iovcnt; i++) |
| 620 |
offset += iov[i].iov_len; |
| 621 |
return offset;
|
| 622 |
} |
| 623 |
|
| 624 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 625 |
unsigned flags,
|
| 626 |
const struct iovec *iov, |
| 627 |
int iovcnt,
|
| 628 |
void *opaque)
|
| 629 |
{
|
| 630 |
VLANClientState *vc = opaque; |
| 631 |
|
| 632 |
if (vc->link_down) {
|
| 633 |
return calc_iov_length(iov, iovcnt);
|
| 634 |
} |
| 635 |
|
| 636 |
if (vc->receive_iov) {
|
| 637 |
return vc->receive_iov(vc, iov, iovcnt);
|
| 638 |
} else {
|
| 639 |
return vc_sendv_compat(vc, iov, iovcnt);
|
| 640 |
} |
| 641 |
} |
| 642 |
|
| 643 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
| 644 |
unsigned flags,
|
| 645 |
const struct iovec *iov, |
| 646 |
int iovcnt,
|
| 647 |
void *opaque)
|
| 648 |
{
|
| 649 |
VLANState *vlan = opaque; |
| 650 |
VLANClientState *vc; |
| 651 |
ssize_t ret = -1;
|
| 652 |
|
| 653 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 654 |
ssize_t len; |
| 655 |
|
| 656 |
if (vc == sender) {
|
| 657 |
continue;
|
| 658 |
} |
| 659 |
|
| 660 |
if (vc->link_down) {
|
| 661 |
ret = calc_iov_length(iov, iovcnt); |
| 662 |
continue;
|
| 663 |
} |
| 664 |
|
| 665 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
| 666 |
|
| 667 |
if (vc->receive_iov) {
|
| 668 |
len = vc->receive_iov(vc, iov, iovcnt); |
| 669 |
} else {
|
| 670 |
len = vc_sendv_compat(vc, iov, iovcnt); |
| 671 |
} |
| 672 |
|
| 673 |
ret = (ret >= 0) ? ret : len;
|
| 674 |
} |
| 675 |
|
| 676 |
return ret;
|
| 677 |
} |
| 678 |
|
| 679 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
| 680 |
const struct iovec *iov, int iovcnt, |
| 681 |
NetPacketSent *sent_cb) |
| 682 |
{
|
| 683 |
NetQueue *queue; |
| 684 |
|
| 685 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 686 |
return calc_iov_length(iov, iovcnt);
|
| 687 |
} |
| 688 |
|
| 689 |
if (sender->peer) {
|
| 690 |
queue = sender->peer->send_queue; |
| 691 |
} else {
|
| 692 |
queue = sender->vlan->send_queue; |
| 693 |
} |
| 694 |
|
| 695 |
return qemu_net_queue_send_iov(queue, sender,
|
| 696 |
QEMU_NET_PACKET_FLAG_NONE, |
| 697 |
iov, iovcnt, sent_cb); |
| 698 |
} |
| 699 |
|
| 700 |
ssize_t |
| 701 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
| 702 |
{
|
| 703 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
| 704 |
} |
| 705 |
|
| 706 |
#if defined(CONFIG_SLIRP)
|
| 707 |
|
| 708 |
/* slirp network adapter */
|
| 709 |
|
| 710 |
#define SLIRP_CFG_HOSTFWD 1 |
| 711 |
#define SLIRP_CFG_LEGACY 2 |
| 712 |
|
| 713 |
struct slirp_config_str {
|
| 714 |
struct slirp_config_str *next;
|
| 715 |
int flags;
|
| 716 |
char str[1024]; |
| 717 |
int legacy_format;
|
| 718 |
}; |
| 719 |
|
| 720 |
typedef struct SlirpState { |
| 721 |
QTAILQ_ENTRY(SlirpState) entry; |
| 722 |
VLANClientState *vc; |
| 723 |
Slirp *slirp; |
| 724 |
#ifndef _WIN32
|
| 725 |
char smb_dir[128]; |
| 726 |
#endif
|
| 727 |
} SlirpState; |
| 728 |
|
| 729 |
static struct slirp_config_str *slirp_configs; |
| 730 |
const char *legacy_tftp_prefix; |
| 731 |
const char *legacy_bootp_filename; |
| 732 |
static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
|
| 733 |
QTAILQ_HEAD_INITIALIZER(slirp_stacks); |
| 734 |
|
| 735 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
| 736 |
int legacy_format);
|
| 737 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
| 738 |
int legacy_format);
|
| 739 |
|
| 740 |
#ifndef _WIN32
|
| 741 |
static const char *legacy_smb_export; |
| 742 |
|
| 743 |
static int slirp_smb(SlirpState *s, const char *exported_dir, |
| 744 |
struct in_addr vserver_addr);
|
| 745 |
static void slirp_smb_cleanup(SlirpState *s); |
| 746 |
#else
|
| 747 |
static inline void slirp_smb_cleanup(SlirpState *s) { } |
| 748 |
#endif
|
| 749 |
|
| 750 |
int slirp_can_output(void *opaque) |
| 751 |
{
|
| 752 |
SlirpState *s = opaque; |
| 753 |
|
| 754 |
return qemu_can_send_packet(s->vc);
|
| 755 |
} |
| 756 |
|
| 757 |
void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) |
| 758 |
{
|
| 759 |
SlirpState *s = opaque; |
| 760 |
|
| 761 |
#ifdef DEBUG_SLIRP
|
| 762 |
printf("slirp output:\n");
|
| 763 |
hex_dump(stdout, pkt, pkt_len); |
| 764 |
#endif
|
| 765 |
qemu_send_packet(s->vc, pkt, pkt_len); |
| 766 |
} |
| 767 |
|
| 768 |
static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 769 |
{
|
| 770 |
SlirpState *s = vc->opaque; |
| 771 |
|
| 772 |
#ifdef DEBUG_SLIRP
|
| 773 |
printf("slirp input:\n");
|
| 774 |
hex_dump(stdout, buf, size); |
| 775 |
#endif
|
| 776 |
slirp_input(s->slirp, buf, size); |
| 777 |
return size;
|
| 778 |
} |
| 779 |
|
| 780 |
static void net_slirp_cleanup(VLANClientState *vc) |
| 781 |
{
|
| 782 |
SlirpState *s = vc->opaque; |
| 783 |
|
| 784 |
slirp_cleanup(s->slirp); |
| 785 |
slirp_smb_cleanup(s); |
| 786 |
QTAILQ_REMOVE(&slirp_stacks, s, entry); |
| 787 |
qemu_free(s); |
| 788 |
} |
| 789 |
|
| 790 |
static int net_slirp_init(VLANState *vlan, const char *model, |
| 791 |
const char *name, int restricted, |
| 792 |
const char *vnetwork, const char *vhost, |
| 793 |
const char *vhostname, const char *tftp_export, |
| 794 |
const char *bootfile, const char *vdhcp_start, |
| 795 |
const char *vnameserver, const char *smb_export, |
| 796 |
const char *vsmbserver) |
| 797 |
{
|
| 798 |
/* default settings according to historic slirp */
|
| 799 |
struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ |
| 800 |
struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ |
| 801 |
struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ |
| 802 |
struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ |
| 803 |
struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ |
| 804 |
#ifndef _WIN32
|
| 805 |
struct in_addr smbsrv = { .s_addr = 0 }; |
| 806 |
#endif
|
| 807 |
SlirpState *s; |
| 808 |
char buf[20]; |
| 809 |
uint32_t addr; |
| 810 |
int shift;
|
| 811 |
char *end;
|
| 812 |
struct slirp_config_str *config;
|
| 813 |
|
| 814 |
if (!tftp_export) {
|
| 815 |
tftp_export = legacy_tftp_prefix; |
| 816 |
} |
| 817 |
if (!bootfile) {
|
| 818 |
bootfile = legacy_bootp_filename; |
| 819 |
} |
| 820 |
|
| 821 |
if (vnetwork) {
|
| 822 |
if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { |
| 823 |
if (!inet_aton(vnetwork, &net)) {
|
| 824 |
return -1; |
| 825 |
} |
| 826 |
addr = ntohl(net.s_addr); |
| 827 |
if (!(addr & 0x80000000)) { |
| 828 |
mask.s_addr = htonl(0xff000000); /* class A */ |
| 829 |
} else if ((addr & 0xfff00000) == 0xac100000) { |
| 830 |
mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ |
| 831 |
} else if ((addr & 0xc0000000) == 0x80000000) { |
| 832 |
mask.s_addr = htonl(0xffff0000); /* class B */ |
| 833 |
} else if ((addr & 0xffff0000) == 0xc0a80000) { |
| 834 |
mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ |
| 835 |
} else if ((addr & 0xffff0000) == 0xc6120000) { |
| 836 |
mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ |
| 837 |
} else if ((addr & 0xe0000000) == 0xe0000000) { |
| 838 |
mask.s_addr = htonl(0xffffff00); /* class C */ |
| 839 |
} else {
|
| 840 |
mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ |
| 841 |
} |
| 842 |
} else {
|
| 843 |
if (!inet_aton(buf, &net)) {
|
| 844 |
return -1; |
| 845 |
} |
| 846 |
shift = strtol(vnetwork, &end, 10);
|
| 847 |
if (*end != '\0') { |
| 848 |
if (!inet_aton(vnetwork, &mask)) {
|
| 849 |
return -1; |
| 850 |
} |
| 851 |
} else if (shift < 4 || shift > 32) { |
| 852 |
return -1; |
| 853 |
} else {
|
| 854 |
mask.s_addr = htonl(0xffffffff << (32 - shift)); |
| 855 |
} |
| 856 |
} |
| 857 |
net.s_addr &= mask.s_addr; |
| 858 |
host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
|
| 859 |
dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
|
| 860 |
dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
|
| 861 |
} |
| 862 |
|
| 863 |
if (vhost && !inet_aton(vhost, &host)) {
|
| 864 |
return -1; |
| 865 |
} |
| 866 |
if ((host.s_addr & mask.s_addr) != net.s_addr) {
|
| 867 |
return -1; |
| 868 |
} |
| 869 |
|
| 870 |
if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
|
| 871 |
return -1; |
| 872 |
} |
| 873 |
if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
|
| 874 |
dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
|
| 875 |
return -1; |
| 876 |
} |
| 877 |
|
| 878 |
if (vnameserver && !inet_aton(vnameserver, &dns)) {
|
| 879 |
return -1; |
| 880 |
} |
| 881 |
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
|
| 882 |
dns.s_addr == host.s_addr) {
|
| 883 |
return -1; |
| 884 |
} |
| 885 |
|
| 886 |
#ifndef _WIN32
|
| 887 |
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
| 888 |
return -1; |
| 889 |
} |
| 890 |
#endif
|
| 891 |
|
| 892 |
s = qemu_mallocz(sizeof(SlirpState));
|
| 893 |
s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
| 894 |
tftp_export, bootfile, dhcp, dns, s); |
| 895 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
| 896 |
|
| 897 |
for (config = slirp_configs; config; config = config->next) {
|
| 898 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
| 899 |
if (slirp_hostfwd(s, config->str,
|
| 900 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
| 901 |
return -1; |
| 902 |
} else {
|
| 903 |
if (slirp_guestfwd(s, config->str,
|
| 904 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
| 905 |
return -1; |
| 906 |
} |
| 907 |
} |
| 908 |
#ifndef _WIN32
|
| 909 |
if (!smb_export) {
|
| 910 |
smb_export = legacy_smb_export; |
| 911 |
} |
| 912 |
if (smb_export) {
|
| 913 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
| 914 |
return -1; |
| 915 |
} |
| 916 |
#endif
|
| 917 |
|
| 918 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP, |
| 919 |
vlan, NULL, model, name, NULL, |
| 920 |
slirp_receive, NULL, NULL, |
| 921 |
net_slirp_cleanup, s); |
| 922 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 923 |
"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); |
| 924 |
return 0; |
| 925 |
} |
| 926 |
|
| 927 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
| 928 |
const char *stack) |
| 929 |
{
|
| 930 |
VLANClientState *vc; |
| 931 |
|
| 932 |
if (vlan) {
|
| 933 |
vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); |
| 934 |
if (!vc) {
|
| 935 |
return NULL; |
| 936 |
} |
| 937 |
if (strcmp(vc->model, "user")) { |
| 938 |
monitor_printf(mon, "invalid device specified\n");
|
| 939 |
return NULL; |
| 940 |
} |
| 941 |
return vc->opaque;
|
| 942 |
} else {
|
| 943 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 944 |
monitor_printf(mon, "user mode network stack not in use\n");
|
| 945 |
return NULL; |
| 946 |
} |
| 947 |
return QTAILQ_FIRST(&slirp_stacks);
|
| 948 |
} |
| 949 |
} |
| 950 |
|
| 951 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
| 952 |
{
|
| 953 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
| 954 |
int host_port;
|
| 955 |
char buf[256] = ""; |
| 956 |
const char *src_str, *p; |
| 957 |
SlirpState *s; |
| 958 |
int is_udp = 0; |
| 959 |
int err;
|
| 960 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
| 961 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
| 962 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
| 963 |
|
| 964 |
if (arg2) {
|
| 965 |
s = slirp_lookup(mon, arg1, arg2); |
| 966 |
src_str = arg3; |
| 967 |
} else {
|
| 968 |
s = slirp_lookup(mon, NULL, NULL); |
| 969 |
src_str = arg1; |
| 970 |
} |
| 971 |
if (!s) {
|
| 972 |
return;
|
| 973 |
} |
| 974 |
|
| 975 |
if (!src_str || !src_str[0]) |
| 976 |
goto fail_syntax;
|
| 977 |
|
| 978 |
p = src_str; |
| 979 |
get_str_sep(buf, sizeof(buf), &p, ':'); |
| 980 |
|
| 981 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
| 982 |
is_udp = 0;
|
| 983 |
} else if (!strcmp(buf, "udp")) { |
| 984 |
is_udp = 1;
|
| 985 |
} else {
|
| 986 |
goto fail_syntax;
|
| 987 |
} |
| 988 |
|
| 989 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 990 |
goto fail_syntax;
|
| 991 |
} |
| 992 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
| 993 |
goto fail_syntax;
|
| 994 |
} |
| 995 |
|
| 996 |
host_port = atoi(p); |
| 997 |
|
| 998 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
| 999 |
host_addr, host_port); |
| 1000 |
|
| 1001 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
| 1002 |
err ? "removed" : "not found"); |
| 1003 |
return;
|
| 1004 |
|
| 1005 |
fail_syntax:
|
| 1006 |
monitor_printf(mon, "invalid format\n");
|
| 1007 |
} |
| 1008 |
|
| 1009 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
| 1010 |
int legacy_format)
|
| 1011 |
{
|
| 1012 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
| 1013 |
struct in_addr guest_addr = { .s_addr = 0 }; |
| 1014 |
int host_port, guest_port;
|
| 1015 |
const char *p; |
| 1016 |
char buf[256]; |
| 1017 |
int is_udp;
|
| 1018 |
char *end;
|
| 1019 |
|
| 1020 |
p = redir_str; |
| 1021 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1022 |
goto fail_syntax;
|
| 1023 |
} |
| 1024 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
| 1025 |
is_udp = 0;
|
| 1026 |
} else if (!strcmp(buf, "udp")) { |
| 1027 |
is_udp = 1;
|
| 1028 |
} else {
|
| 1029 |
goto fail_syntax;
|
| 1030 |
} |
| 1031 |
|
| 1032 |
if (!legacy_format) {
|
| 1033 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1034 |
goto fail_syntax;
|
| 1035 |
} |
| 1036 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
| 1037 |
goto fail_syntax;
|
| 1038 |
} |
| 1039 |
} |
| 1040 |
|
| 1041 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
| 1042 |
goto fail_syntax;
|
| 1043 |
} |
| 1044 |
host_port = strtol(buf, &end, 0);
|
| 1045 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
| 1046 |
goto fail_syntax;
|
| 1047 |
} |
| 1048 |
|
| 1049 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1050 |
goto fail_syntax;
|
| 1051 |
} |
| 1052 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
| 1053 |
goto fail_syntax;
|
| 1054 |
} |
| 1055 |
|
| 1056 |
guest_port = strtol(p, &end, 0);
|
| 1057 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
| 1058 |
goto fail_syntax;
|
| 1059 |
} |
| 1060 |
|
| 1061 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
| 1062 |
guest_port) < 0) {
|
| 1063 |
qemu_error("could not set up host forwarding rule '%s'\n",
|
| 1064 |
redir_str); |
| 1065 |
return -1; |
| 1066 |
} |
| 1067 |
return 0; |
| 1068 |
|
| 1069 |
fail_syntax:
|
| 1070 |
qemu_error("invalid host forwarding rule '%s'\n", redir_str);
|
| 1071 |
return -1; |
| 1072 |
} |
| 1073 |
|
| 1074 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
| 1075 |
{
|
| 1076 |
const char *redir_str; |
| 1077 |
SlirpState *s; |
| 1078 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
| 1079 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
| 1080 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
| 1081 |
|
| 1082 |
if (arg2) {
|
| 1083 |
s = slirp_lookup(mon, arg1, arg2); |
| 1084 |
redir_str = arg3; |
| 1085 |
} else {
|
| 1086 |
s = slirp_lookup(mon, NULL, NULL); |
| 1087 |
redir_str = arg1; |
| 1088 |
} |
| 1089 |
if (s) {
|
| 1090 |
slirp_hostfwd(s, redir_str, 0);
|
| 1091 |
} |
| 1092 |
|
| 1093 |
} |
| 1094 |
|
| 1095 |
int net_slirp_redir(const char *redir_str) |
| 1096 |
{
|
| 1097 |
struct slirp_config_str *config;
|
| 1098 |
|
| 1099 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 1100 |
config = qemu_malloc(sizeof(*config));
|
| 1101 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
| 1102 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
| 1103 |
config->next = slirp_configs; |
| 1104 |
slirp_configs = config; |
| 1105 |
return 0; |
| 1106 |
} |
| 1107 |
|
| 1108 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
| 1109 |
} |
| 1110 |
|
| 1111 |
#ifndef _WIN32
|
| 1112 |
|
| 1113 |
/* automatic user mode samba server configuration */
|
| 1114 |
static void slirp_smb_cleanup(SlirpState *s) |
| 1115 |
{
|
| 1116 |
char cmd[128]; |
| 1117 |
|
| 1118 |
if (s->smb_dir[0] != '\0') { |
| 1119 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
| 1120 |
system(cmd); |
| 1121 |
s->smb_dir[0] = '\0'; |
| 1122 |
} |
| 1123 |
} |
| 1124 |
|
| 1125 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
| 1126 |
struct in_addr vserver_addr)
|
| 1127 |
{
|
| 1128 |
static int instance; |
| 1129 |
char smb_conf[128]; |
| 1130 |
char smb_cmdline[128]; |
| 1131 |
FILE *f; |
| 1132 |
|
| 1133 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
| 1134 |
(long)getpid(), instance++);
|
| 1135 |
if (mkdir(s->smb_dir, 0700) < 0) { |
| 1136 |
qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
|
| 1137 |
return -1; |
| 1138 |
} |
| 1139 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
| 1140 |
|
| 1141 |
f = fopen(smb_conf, "w");
|
| 1142 |
if (!f) {
|
| 1143 |
slirp_smb_cleanup(s); |
| 1144 |
qemu_error("could not create samba server configuration file '%s'\n",
|
| 1145 |
smb_conf); |
| 1146 |
return -1; |
| 1147 |
} |
| 1148 |
fprintf(f, |
| 1149 |
"[global]\n"
|
| 1150 |
"private dir=%s\n"
|
| 1151 |
"smb ports=0\n"
|
| 1152 |
"socket address=127.0.0.1\n"
|
| 1153 |
"pid directory=%s\n"
|
| 1154 |
"lock directory=%s\n"
|
| 1155 |
"log file=%s/log.smbd\n"
|
| 1156 |
"smb passwd file=%s/smbpasswd\n"
|
| 1157 |
"security = share\n"
|
| 1158 |
"[qemu]\n"
|
| 1159 |
"path=%s\n"
|
| 1160 |
"read only=no\n"
|
| 1161 |
"guest ok=yes\n",
|
| 1162 |
s->smb_dir, |
| 1163 |
s->smb_dir, |
| 1164 |
s->smb_dir, |
| 1165 |
s->smb_dir, |
| 1166 |
s->smb_dir, |
| 1167 |
exported_dir |
| 1168 |
); |
| 1169 |
fclose(f); |
| 1170 |
|
| 1171 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
| 1172 |
SMBD_COMMAND, smb_conf); |
| 1173 |
|
| 1174 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
| 1175 |
slirp_smb_cleanup(s); |
| 1176 |
qemu_error("conflicting/invalid smbserver address\n");
|
| 1177 |
return -1; |
| 1178 |
} |
| 1179 |
return 0; |
| 1180 |
} |
| 1181 |
|
| 1182 |
/* automatic user mode samba server configuration (legacy interface) */
|
| 1183 |
int net_slirp_smb(const char *exported_dir) |
| 1184 |
{
|
| 1185 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
| 1186 |
|
| 1187 |
if (legacy_smb_export) {
|
| 1188 |
fprintf(stderr, "-smb given twice\n");
|
| 1189 |
return -1; |
| 1190 |
} |
| 1191 |
legacy_smb_export = exported_dir; |
| 1192 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
| 1193 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
| 1194 |
vserver_addr); |
| 1195 |
} |
| 1196 |
return 0; |
| 1197 |
} |
| 1198 |
|
| 1199 |
#endif /* !defined(_WIN32) */ |
| 1200 |
|
| 1201 |
struct GuestFwd {
|
| 1202 |
CharDriverState *hd; |
| 1203 |
struct in_addr server;
|
| 1204 |
int port;
|
| 1205 |
Slirp *slirp; |
| 1206 |
}; |
| 1207 |
|
| 1208 |
static int guestfwd_can_read(void *opaque) |
| 1209 |
{
|
| 1210 |
struct GuestFwd *fwd = opaque;
|
| 1211 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
| 1212 |
} |
| 1213 |
|
| 1214 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
| 1215 |
{
|
| 1216 |
struct GuestFwd *fwd = opaque;
|
| 1217 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
| 1218 |
} |
| 1219 |
|
| 1220 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
| 1221 |
int legacy_format)
|
| 1222 |
{
|
| 1223 |
struct in_addr server = { .s_addr = 0 }; |
| 1224 |
struct GuestFwd *fwd;
|
| 1225 |
const char *p; |
| 1226 |
char buf[128]; |
| 1227 |
char *end;
|
| 1228 |
int port;
|
| 1229 |
|
| 1230 |
p = config_str; |
| 1231 |
if (legacy_format) {
|
| 1232 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1233 |
goto fail_syntax;
|
| 1234 |
} |
| 1235 |
} else {
|
| 1236 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1237 |
goto fail_syntax;
|
| 1238 |
} |
| 1239 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
| 1240 |
goto fail_syntax;
|
| 1241 |
} |
| 1242 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 1243 |
goto fail_syntax;
|
| 1244 |
} |
| 1245 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
| 1246 |
goto fail_syntax;
|
| 1247 |
} |
| 1248 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
| 1249 |
goto fail_syntax;
|
| 1250 |
} |
| 1251 |
} |
| 1252 |
port = strtol(buf, &end, 10);
|
| 1253 |
if (*end != '\0' || port < 1 || port > 65535) { |
| 1254 |
goto fail_syntax;
|
| 1255 |
} |
| 1256 |
|
| 1257 |
fwd = qemu_malloc(sizeof(struct GuestFwd)); |
| 1258 |
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); |
| 1259 |
fwd->hd = qemu_chr_open(buf, p, NULL);
|
| 1260 |
if (!fwd->hd) {
|
| 1261 |
qemu_error("could not open guest forwarding device '%s'\n", buf);
|
| 1262 |
qemu_free(fwd); |
| 1263 |
return -1; |
| 1264 |
} |
| 1265 |
|
| 1266 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
| 1267 |
qemu_error("conflicting/invalid host:port in guest forwarding "
|
| 1268 |
"rule '%s'\n", config_str);
|
| 1269 |
qemu_free(fwd); |
| 1270 |
return -1; |
| 1271 |
} |
| 1272 |
fwd->server = server; |
| 1273 |
fwd->port = port; |
| 1274 |
fwd->slirp = s->slirp; |
| 1275 |
|
| 1276 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
| 1277 |
NULL, fwd);
|
| 1278 |
return 0; |
| 1279 |
|
| 1280 |
fail_syntax:
|
| 1281 |
qemu_error("invalid guest forwarding rule '%s'\n", config_str);
|
| 1282 |
return -1; |
| 1283 |
} |
| 1284 |
|
| 1285 |
void do_info_usernet(Monitor *mon)
|
| 1286 |
{
|
| 1287 |
SlirpState *s; |
| 1288 |
|
| 1289 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) {
|
| 1290 |
monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
|
| 1291 |
slirp_connection_info(s->slirp, mon); |
| 1292 |
} |
| 1293 |
} |
| 1294 |
|
| 1295 |
#endif /* CONFIG_SLIRP */ |
| 1296 |
|
| 1297 |
#if defined(_WIN32)
|
| 1298 |
int tap_has_ufo(VLANClientState *vc)
|
| 1299 |
{
|
| 1300 |
return 0; |
| 1301 |
} |
| 1302 |
int tap_has_vnet_hdr(VLANClientState *vc)
|
| 1303 |
{
|
| 1304 |
return 0; |
| 1305 |
} |
| 1306 |
void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr) |
| 1307 |
{
|
| 1308 |
} |
| 1309 |
void tap_set_offload(VLANClientState *vc, int csum, int tso4, |
| 1310 |
int tso6, int ecn, int ufo) |
| 1311 |
{
|
| 1312 |
} |
| 1313 |
#else /* !defined(_WIN32) */ |
| 1314 |
|
| 1315 |
/* Maximum GSO packet size (64k) plus plenty of room for
|
| 1316 |
* the ethernet and virtio_net headers
|
| 1317 |
*/
|
| 1318 |
#define TAP_BUFSIZE (4096 + 65536) |
| 1319 |
|
| 1320 |
typedef struct TAPState { |
| 1321 |
VLANClientState *vc; |
| 1322 |
int fd;
|
| 1323 |
char down_script[1024]; |
| 1324 |
char down_script_arg[128]; |
| 1325 |
uint8_t buf[TAP_BUFSIZE]; |
| 1326 |
unsigned int read_poll : 1; |
| 1327 |
unsigned int write_poll : 1; |
| 1328 |
unsigned int has_vnet_hdr : 1; |
| 1329 |
unsigned int using_vnet_hdr : 1; |
| 1330 |
unsigned int has_ufo: 1; |
| 1331 |
} TAPState; |
| 1332 |
|
| 1333 |
static int launch_script(const char *setup_script, const char *ifname, int fd); |
| 1334 |
|
| 1335 |
static int tap_can_send(void *opaque); |
| 1336 |
static void tap_send(void *opaque); |
| 1337 |
static void tap_writable(void *opaque); |
| 1338 |
|
| 1339 |
static void tap_update_fd_handler(TAPState *s) |
| 1340 |
{
|
| 1341 |
qemu_set_fd_handler2(s->fd, |
| 1342 |
s->read_poll ? tap_can_send : NULL,
|
| 1343 |
s->read_poll ? tap_send : NULL,
|
| 1344 |
s->write_poll ? tap_writable : NULL,
|
| 1345 |
s); |
| 1346 |
} |
| 1347 |
|
| 1348 |
static void tap_read_poll(TAPState *s, int enable) |
| 1349 |
{
|
| 1350 |
s->read_poll = !!enable; |
| 1351 |
tap_update_fd_handler(s); |
| 1352 |
} |
| 1353 |
|
| 1354 |
static void tap_write_poll(TAPState *s, int enable) |
| 1355 |
{
|
| 1356 |
s->write_poll = !!enable; |
| 1357 |
tap_update_fd_handler(s); |
| 1358 |
} |
| 1359 |
|
| 1360 |
static void tap_writable(void *opaque) |
| 1361 |
{
|
| 1362 |
TAPState *s = opaque; |
| 1363 |
|
| 1364 |
tap_write_poll(s, 0);
|
| 1365 |
|
| 1366 |
qemu_flush_queued_packets(s->vc); |
| 1367 |
} |
| 1368 |
|
| 1369 |
static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt) |
| 1370 |
{
|
| 1371 |
ssize_t len; |
| 1372 |
|
| 1373 |
do {
|
| 1374 |
len = writev(s->fd, iov, iovcnt); |
| 1375 |
} while (len == -1 && errno == EINTR); |
| 1376 |
|
| 1377 |
if (len == -1 && errno == EAGAIN) { |
| 1378 |
tap_write_poll(s, 1);
|
| 1379 |
return 0; |
| 1380 |
} |
| 1381 |
|
| 1382 |
return len;
|
| 1383 |
} |
| 1384 |
|
| 1385 |
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov, |
| 1386 |
int iovcnt)
|
| 1387 |
{
|
| 1388 |
TAPState *s = vc->opaque; |
| 1389 |
const struct iovec *iovp = iov; |
| 1390 |
struct iovec iov_copy[iovcnt + 1]; |
| 1391 |
struct virtio_net_hdr hdr = { 0, }; |
| 1392 |
|
| 1393 |
if (s->has_vnet_hdr && !s->using_vnet_hdr) {
|
| 1394 |
iov_copy[0].iov_base = &hdr;
|
| 1395 |
iov_copy[0].iov_len = sizeof(hdr); |
| 1396 |
memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov)); |
| 1397 |
iovp = iov_copy; |
| 1398 |
iovcnt++; |
| 1399 |
} |
| 1400 |
|
| 1401 |
return tap_write_packet(s, iovp, iovcnt);
|
| 1402 |
} |
| 1403 |
|
| 1404 |
static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 1405 |
{
|
| 1406 |
TAPState *s = vc->opaque; |
| 1407 |
struct iovec iov[2]; |
| 1408 |
int iovcnt = 0; |
| 1409 |
struct virtio_net_hdr hdr = { 0, }; |
| 1410 |
|
| 1411 |
if (s->has_vnet_hdr) {
|
| 1412 |
iov[iovcnt].iov_base = &hdr; |
| 1413 |
iov[iovcnt].iov_len = sizeof(hdr);
|
| 1414 |
iovcnt++; |
| 1415 |
} |
| 1416 |
|
| 1417 |
iov[iovcnt].iov_base = (char *)buf;
|
| 1418 |
iov[iovcnt].iov_len = size; |
| 1419 |
iovcnt++; |
| 1420 |
|
| 1421 |
return tap_write_packet(s, iov, iovcnt);
|
| 1422 |
} |
| 1423 |
|
| 1424 |
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 1425 |
{
|
| 1426 |
TAPState *s = vc->opaque; |
| 1427 |
struct iovec iov[1]; |
| 1428 |
|
| 1429 |
if (s->has_vnet_hdr && !s->using_vnet_hdr) {
|
| 1430 |
return tap_receive_raw(vc, buf, size);
|
| 1431 |
} |
| 1432 |
|
| 1433 |
iov[0].iov_base = (char *)buf; |
| 1434 |
iov[0].iov_len = size;
|
| 1435 |
|
| 1436 |
return tap_write_packet(s, iov, 1); |
| 1437 |
} |
| 1438 |
|
| 1439 |
static int tap_can_send(void *opaque) |
| 1440 |
{
|
| 1441 |
TAPState *s = opaque; |
| 1442 |
|
| 1443 |
return qemu_can_send_packet(s->vc);
|
| 1444 |
} |
| 1445 |
|
| 1446 |
#ifdef __sun__
|
| 1447 |
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) |
| 1448 |
{
|
| 1449 |
struct strbuf sbuf;
|
| 1450 |
int f = 0; |
| 1451 |
|
| 1452 |
sbuf.maxlen = maxlen; |
| 1453 |
sbuf.buf = (char *)buf;
|
| 1454 |
|
| 1455 |
return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; |
| 1456 |
} |
| 1457 |
#else
|
| 1458 |
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) |
| 1459 |
{
|
| 1460 |
return read(tapfd, buf, maxlen);
|
| 1461 |
} |
| 1462 |
#endif
|
| 1463 |
|
| 1464 |
static void tap_send_completed(VLANClientState *vc, ssize_t len) |
| 1465 |
{
|
| 1466 |
TAPState *s = vc->opaque; |
| 1467 |
tap_read_poll(s, 1);
|
| 1468 |
} |
| 1469 |
|
| 1470 |
static void tap_send(void *opaque) |
| 1471 |
{
|
| 1472 |
TAPState *s = opaque; |
| 1473 |
int size;
|
| 1474 |
|
| 1475 |
do {
|
| 1476 |
uint8_t *buf = s->buf; |
| 1477 |
|
| 1478 |
size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
|
| 1479 |
if (size <= 0) { |
| 1480 |
break;
|
| 1481 |
} |
| 1482 |
|
| 1483 |
if (s->has_vnet_hdr && !s->using_vnet_hdr) {
|
| 1484 |
buf += sizeof(struct virtio_net_hdr); |
| 1485 |
size -= sizeof(struct virtio_net_hdr); |
| 1486 |
} |
| 1487 |
|
| 1488 |
size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed); |
| 1489 |
if (size == 0) { |
| 1490 |
tap_read_poll(s, 0);
|
| 1491 |
} |
| 1492 |
} while (size > 0); |
| 1493 |
} |
| 1494 |
|
| 1495 |
/* sndbuf should be set to a value lower than the tx queue
|
| 1496 |
* capacity of any destination network interface.
|
| 1497 |
* Ethernet NICs generally have txqueuelen=1000, so 1Mb is
|
| 1498 |
* a good default, given a 1500 byte MTU.
|
| 1499 |
*/
|
| 1500 |
#define TAP_DEFAULT_SNDBUF 1024*1024 |
| 1501 |
|
| 1502 |
static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) |
| 1503 |
{
|
| 1504 |
int sndbuf;
|
| 1505 |
|
| 1506 |
sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
|
| 1507 |
if (!sndbuf) {
|
| 1508 |
sndbuf = INT_MAX; |
| 1509 |
} |
| 1510 |
|
| 1511 |
if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) { |
| 1512 |
qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
|
| 1513 |
return -1; |
| 1514 |
} |
| 1515 |
return 0; |
| 1516 |
} |
| 1517 |
|
| 1518 |
int tap_has_ufo(VLANClientState *vc)
|
| 1519 |
{
|
| 1520 |
TAPState *s = vc->opaque; |
| 1521 |
|
| 1522 |
assert(vc->type == NET_CLIENT_TYPE_TAP); |
| 1523 |
|
| 1524 |
return s->has_ufo;
|
| 1525 |
} |
| 1526 |
|
| 1527 |
int tap_has_vnet_hdr(VLANClientState *vc)
|
| 1528 |
{
|
| 1529 |
TAPState *s = vc->opaque; |
| 1530 |
|
| 1531 |
assert(vc->type == NET_CLIENT_TYPE_TAP); |
| 1532 |
|
| 1533 |
return s->has_vnet_hdr;
|
| 1534 |
} |
| 1535 |
|
| 1536 |
void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr) |
| 1537 |
{
|
| 1538 |
TAPState *s = vc->opaque; |
| 1539 |
|
| 1540 |
using_vnet_hdr = using_vnet_hdr != 0;
|
| 1541 |
|
| 1542 |
assert(vc->type == NET_CLIENT_TYPE_TAP); |
| 1543 |
assert(s->has_vnet_hdr == using_vnet_hdr); |
| 1544 |
|
| 1545 |
s->using_vnet_hdr = using_vnet_hdr; |
| 1546 |
} |
| 1547 |
|
| 1548 |
static int tap_probe_vnet_hdr(int fd) |
| 1549 |
{
|
| 1550 |
struct ifreq ifr;
|
| 1551 |
|
| 1552 |
if (ioctl(fd, TUNGETIFF, &ifr) != 0) { |
| 1553 |
qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
|
| 1554 |
return 0; |
| 1555 |
} |
| 1556 |
|
| 1557 |
return ifr.ifr_flags & IFF_VNET_HDR;
|
| 1558 |
} |
| 1559 |
|
| 1560 |
void tap_set_offload(VLANClientState *vc, int csum, int tso4, |
| 1561 |
int tso6, int ecn, int ufo) |
| 1562 |
{
|
| 1563 |
TAPState *s = vc->opaque; |
| 1564 |
unsigned int offload = 0; |
| 1565 |
|
| 1566 |
if (csum) {
|
| 1567 |
offload |= TUN_F_CSUM; |
| 1568 |
if (tso4)
|
| 1569 |
offload |= TUN_F_TSO4; |
| 1570 |
if (tso6)
|
| 1571 |
offload |= TUN_F_TSO6; |
| 1572 |
if ((tso4 || tso6) && ecn)
|
| 1573 |
offload |= TUN_F_TSO_ECN; |
| 1574 |
if (ufo)
|
| 1575 |
offload |= TUN_F_UFO; |
| 1576 |
} |
| 1577 |
|
| 1578 |
if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) { |
| 1579 |
offload &= ~TUN_F_UFO; |
| 1580 |
if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) { |
| 1581 |
fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
|
| 1582 |
strerror(errno)); |
| 1583 |
} |
| 1584 |
} |
| 1585 |
} |
| 1586 |
|
| 1587 |
static void tap_cleanup(VLANClientState *vc) |
| 1588 |
{
|
| 1589 |
TAPState *s = vc->opaque; |
| 1590 |
|
| 1591 |
qemu_purge_queued_packets(vc); |
| 1592 |
|
| 1593 |
if (s->down_script[0]) |
| 1594 |
launch_script(s->down_script, s->down_script_arg, s->fd); |
| 1595 |
|
| 1596 |
tap_read_poll(s, 0);
|
| 1597 |
tap_write_poll(s, 0);
|
| 1598 |
close(s->fd); |
| 1599 |
qemu_free(s); |
| 1600 |
} |
| 1601 |
|
| 1602 |
/* fd support */
|
| 1603 |
|
| 1604 |
static TAPState *net_tap_fd_init(VLANState *vlan,
|
| 1605 |
const char *model, |
| 1606 |
const char *name, |
| 1607 |
int fd,
|
| 1608 |
int vnet_hdr)
|
| 1609 |
{
|
| 1610 |
TAPState *s; |
| 1611 |
unsigned int offload; |
| 1612 |
|
| 1613 |
s = qemu_mallocz(sizeof(TAPState));
|
| 1614 |
s->fd = fd; |
| 1615 |
s->has_vnet_hdr = vnet_hdr != 0;
|
| 1616 |
s->using_vnet_hdr = 0;
|
| 1617 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP, |
| 1618 |
vlan, NULL, model, name, NULL, |
| 1619 |
tap_receive, tap_receive_raw, |
| 1620 |
tap_receive_iov, tap_cleanup, s); |
| 1621 |
s->has_ufo = 0;
|
| 1622 |
/* Check if tap supports UFO */
|
| 1623 |
offload = TUN_F_CSUM | TUN_F_UFO; |
| 1624 |
if (ioctl(s->fd, TUNSETOFFLOAD, offload) == 0) |
| 1625 |
s->has_ufo = 1;
|
| 1626 |
tap_set_offload(s->vc, 0, 0, 0, 0, 0); |
| 1627 |
tap_read_poll(s, 1);
|
| 1628 |
return s;
|
| 1629 |
} |
| 1630 |
|
| 1631 |
#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
|
| 1632 |
static int tap_open(char *ifname, int ifname_size, |
| 1633 |
int *vnet_hdr, int vnet_hdr_required) |
| 1634 |
{
|
| 1635 |
int fd;
|
| 1636 |
char *dev;
|
| 1637 |
struct stat s;
|
| 1638 |
|
| 1639 |
TFR(fd = open("/dev/tap", O_RDWR));
|
| 1640 |
if (fd < 0) { |
| 1641 |
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
| 1642 |
return -1; |
| 1643 |
} |
| 1644 |
|
| 1645 |
fstat(fd, &s); |
| 1646 |
dev = devname(s.st_rdev, S_IFCHR); |
| 1647 |
pstrcpy(ifname, ifname_size, dev); |
| 1648 |
|
| 1649 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
| 1650 |
return fd;
|
| 1651 |
} |
| 1652 |
#elif defined(__sun__)
|
| 1653 |
#define TUNNEWPPA (('T'<<16) | 0x0001) |
| 1654 |
/*
|
| 1655 |
* Allocate TAP device, returns opened fd.
|
| 1656 |
* Stores dev name in the first arg(must be large enough).
|
| 1657 |
*/
|
| 1658 |
static int tap_alloc(char *dev, size_t dev_size) |
| 1659 |
{
|
| 1660 |
int tap_fd, if_fd, ppa = -1; |
| 1661 |
static int ip_fd = 0; |
| 1662 |
char *ptr;
|
| 1663 |
|
| 1664 |
static int arp_fd = 0; |
| 1665 |
int ip_muxid, arp_muxid;
|
| 1666 |
struct strioctl strioc_if, strioc_ppa;
|
| 1667 |
int link_type = I_PLINK;;
|
| 1668 |
struct lifreq ifr;
|
| 1669 |
char actual_name[32] = ""; |
| 1670 |
|
| 1671 |
memset(&ifr, 0x0, sizeof(ifr)); |
| 1672 |
|
| 1673 |
if( *dev ){
|
| 1674 |
ptr = dev; |
| 1675 |
while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
| 1676 |
ppa = atoi(ptr); |
| 1677 |
} |
| 1678 |
|
| 1679 |
/* Check if IP device was opened */
|
| 1680 |
if( ip_fd )
|
| 1681 |
close(ip_fd); |
| 1682 |
|
| 1683 |
TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); |
| 1684 |
if (ip_fd < 0) { |
| 1685 |
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
| 1686 |
return -1; |
| 1687 |
} |
| 1688 |
|
| 1689 |
TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); |
| 1690 |
if (tap_fd < 0) { |
| 1691 |
syslog(LOG_ERR, "Can't open /dev/tap");
|
| 1692 |
return -1; |
| 1693 |
} |
| 1694 |
|
| 1695 |
/* Assign a new PPA and get its unit number. */
|
| 1696 |
strioc_ppa.ic_cmd = TUNNEWPPA; |
| 1697 |
strioc_ppa.ic_timout = 0;
|
| 1698 |
strioc_ppa.ic_len = sizeof(ppa);
|
| 1699 |
strioc_ppa.ic_dp = (char *)&ppa;
|
| 1700 |
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) |
| 1701 |
syslog (LOG_ERR, "Can't assign new interface");
|
| 1702 |
|
| 1703 |
TFR(if_fd = open("/dev/tap", O_RDWR, 0)); |
| 1704 |
if (if_fd < 0) { |
| 1705 |
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
| 1706 |
return -1; |
| 1707 |
} |
| 1708 |
if(ioctl(if_fd, I_PUSH, "ip") < 0){ |
| 1709 |
syslog(LOG_ERR, "Can't push IP module");
|
| 1710 |
return -1; |
| 1711 |
} |
| 1712 |
|
| 1713 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) |
| 1714 |
syslog(LOG_ERR, "Can't get flags\n");
|
| 1715 |
|
| 1716 |
snprintf (actual_name, 32, "tap%d", ppa); |
| 1717 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
| 1718 |
|
| 1719 |
ifr.lifr_ppa = ppa; |
| 1720 |
/* Assign ppa according to the unit number returned by tun device */
|
| 1721 |
|
| 1722 |
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) |
| 1723 |
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
| 1724 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) |
| 1725 |
syslog (LOG_ERR, "Can't get flags\n");
|
| 1726 |
/* Push arp module to if_fd */
|
| 1727 |
if (ioctl (if_fd, I_PUSH, "arp") < 0) |
| 1728 |
syslog (LOG_ERR, "Can't push ARP module (2)");
|
| 1729 |
|
| 1730 |
/* Push arp module to ip_fd */
|
| 1731 |
if (ioctl (ip_fd, I_POP, NULL) < 0) |
| 1732 |
syslog (LOG_ERR, "I_POP failed\n");
|
| 1733 |
if (ioctl (ip_fd, I_PUSH, "arp") < 0) |
| 1734 |
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
| 1735 |
/* Open arp_fd */
|
| 1736 |
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); |
| 1737 |
if (arp_fd < 0) |
| 1738 |
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); |
| 1739 |
|
| 1740 |
/* Set ifname to arp */
|
| 1741 |
strioc_if.ic_cmd = SIOCSLIFNAME; |
| 1742 |
strioc_if.ic_timout = 0;
|
| 1743 |
strioc_if.ic_len = sizeof(ifr);
|
| 1744 |
strioc_if.ic_dp = (char *)𝔦
|
| 1745 |
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ |
| 1746 |
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
| 1747 |
} |
| 1748 |
|
| 1749 |
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ |
| 1750 |
syslog(LOG_ERR, "Can't link TAP device to IP");
|
| 1751 |
return -1; |
| 1752 |
} |
| 1753 |
|
| 1754 |
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) |
| 1755 |
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
| 1756 |
|
| 1757 |
close (if_fd); |
| 1758 |
|
| 1759 |
memset(&ifr, 0x0, sizeof(ifr)); |
| 1760 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
| 1761 |
ifr.lifr_ip_muxid = ip_muxid; |
| 1762 |
ifr.lifr_arp_muxid = arp_muxid; |
| 1763 |
|
| 1764 |
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) |
| 1765 |
{
|
| 1766 |
ioctl (ip_fd, I_PUNLINK , arp_muxid); |
| 1767 |
ioctl (ip_fd, I_PUNLINK, ip_muxid); |
| 1768 |
syslog (LOG_ERR, "Can't set multiplexor id");
|
| 1769 |
} |
| 1770 |
|
| 1771 |
snprintf(dev, dev_size, "tap%d", ppa);
|
| 1772 |
return tap_fd;
|
| 1773 |
} |
| 1774 |
|
| 1775 |
static int tap_open(char *ifname, int ifname_size, |
| 1776 |
int *vnet_hdr, int vnet_hdr_required) |
| 1777 |
{
|
| 1778 |
char dev[10]=""; |
| 1779 |
int fd;
|
| 1780 |
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ |
| 1781 |
fprintf(stderr, "Cannot allocate TAP device\n");
|
| 1782 |
return -1; |
| 1783 |
} |
| 1784 |
pstrcpy(ifname, ifname_size, dev); |
| 1785 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
| 1786 |
return fd;
|
| 1787 |
} |
| 1788 |
#elif defined (_AIX)
|
| 1789 |
static int tap_open(char *ifname, int ifname_size, |
| 1790 |
int *vnet_hdr, int vnet_hdr_required) |
| 1791 |
{
|
| 1792 |
fprintf (stderr, "no tap on AIX\n");
|
| 1793 |
return -1; |
| 1794 |
} |
| 1795 |
#else
|
| 1796 |
static int tap_open(char *ifname, int ifname_size, |
| 1797 |
int *vnet_hdr, int vnet_hdr_required) |
| 1798 |
{
|
| 1799 |
struct ifreq ifr;
|
| 1800 |
int fd, ret;
|
| 1801 |
|
| 1802 |
TFR(fd = open("/dev/net/tun", O_RDWR));
|
| 1803 |
if (fd < 0) { |
| 1804 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
| 1805 |
return -1; |
| 1806 |
} |
| 1807 |
memset(&ifr, 0, sizeof(ifr)); |
| 1808 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
| 1809 |
|
| 1810 |
if (*vnet_hdr) {
|
| 1811 |
unsigned int features; |
| 1812 |
|
| 1813 |
if (ioctl(fd, TUNGETFEATURES, &features) == 0 && |
| 1814 |
features & IFF_VNET_HDR) {
|
| 1815 |
*vnet_hdr = 1;
|
| 1816 |
ifr.ifr_flags |= IFF_VNET_HDR; |
| 1817 |
} |
| 1818 |
|
| 1819 |
if (vnet_hdr_required && !*vnet_hdr) {
|
| 1820 |
qemu_error("vnet_hdr=1 requested, but no kernel "
|
| 1821 |
"support for IFF_VNET_HDR available");
|
| 1822 |
close(fd); |
| 1823 |
return -1; |
| 1824 |
} |
| 1825 |
} |
| 1826 |
|
| 1827 |
if (ifname[0] != '\0') |
| 1828 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); |
| 1829 |
else
|
| 1830 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
|
| 1831 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
| 1832 |
if (ret != 0) { |
| 1833 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
| 1834 |
close(fd); |
| 1835 |
return -1; |
| 1836 |
} |
| 1837 |
pstrcpy(ifname, ifname_size, ifr.ifr_name); |
| 1838 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
| 1839 |
return fd;
|
| 1840 |
} |
| 1841 |
#endif
|
| 1842 |
|
| 1843 |
static int launch_script(const char *setup_script, const char *ifname, int fd) |
| 1844 |
{
|
| 1845 |
sigset_t oldmask, mask; |
| 1846 |
int pid, status;
|
| 1847 |
char *args[3]; |
| 1848 |
char **parg;
|
| 1849 |
|
| 1850 |
sigemptyset(&mask); |
| 1851 |
sigaddset(&mask, SIGCHLD); |
| 1852 |
sigprocmask(SIG_BLOCK, &mask, &oldmask); |
| 1853 |
|
| 1854 |
/* try to launch network script */
|
| 1855 |
pid = fork(); |
| 1856 |
if (pid == 0) { |
| 1857 |
int open_max = sysconf(_SC_OPEN_MAX), i;
|
| 1858 |
|
| 1859 |
for (i = 0; i < open_max; i++) { |
| 1860 |
if (i != STDIN_FILENO &&
|
| 1861 |
i != STDOUT_FILENO && |
| 1862 |
i != STDERR_FILENO && |
| 1863 |
i != fd) {
|
| 1864 |
close(i); |
| 1865 |
} |
| 1866 |
} |
| 1867 |
parg = args; |
| 1868 |
*parg++ = (char *)setup_script;
|
| 1869 |
*parg++ = (char *)ifname;
|
| 1870 |
*parg++ = NULL;
|
| 1871 |
execv(setup_script, args); |
| 1872 |
_exit(1);
|
| 1873 |
} else if (pid > 0) { |
| 1874 |
while (waitpid(pid, &status, 0) != pid) { |
| 1875 |
/* loop */
|
| 1876 |
} |
| 1877 |
sigprocmask(SIG_SETMASK, &oldmask, NULL);
|
| 1878 |
|
| 1879 |
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { |
| 1880 |
return 0; |
| 1881 |
} |
| 1882 |
} |
| 1883 |
fprintf(stderr, "%s: could not launch network script\n", setup_script);
|
| 1884 |
return -1; |
| 1885 |
} |
| 1886 |
|
| 1887 |
static int net_tap_init(QemuOpts *opts, int *vnet_hdr) |
| 1888 |
{
|
| 1889 |
int fd, vnet_hdr_required;
|
| 1890 |
char ifname[128] = {0,}; |
| 1891 |
const char *setup_script; |
| 1892 |
|
| 1893 |
if (qemu_opt_get(opts, "ifname")) { |
| 1894 |
pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname")); |
| 1895 |
} |
| 1896 |
|
| 1897 |
*vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1); |
| 1898 |
if (qemu_opt_get(opts, "vnet_hdr")) { |
| 1899 |
vnet_hdr_required = *vnet_hdr; |
| 1900 |
} else {
|
| 1901 |
vnet_hdr_required = 0;
|
| 1902 |
} |
| 1903 |
|
| 1904 |
TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
|
| 1905 |
if (fd < 0) { |
| 1906 |
return -1; |
| 1907 |
} |
| 1908 |
|
| 1909 |
setup_script = qemu_opt_get(opts, "script");
|
| 1910 |
if (setup_script &&
|
| 1911 |
setup_script[0] != '\0' && |
| 1912 |
strcmp(setup_script, "no") != 0 && |
| 1913 |
launch_script(setup_script, ifname, fd)) {
|
| 1914 |
close(fd); |
| 1915 |
return -1; |
| 1916 |
} |
| 1917 |
|
| 1918 |
qemu_opt_set(opts, "ifname", ifname);
|
| 1919 |
|
| 1920 |
return fd;
|
| 1921 |
} |
| 1922 |
|
| 1923 |
#endif /* !_WIN32 */ |
| 1924 |
|
| 1925 |
#if defined(CONFIG_VDE)
|
| 1926 |
typedef struct VDEState { |
| 1927 |
VLANClientState *vc; |
| 1928 |
VDECONN *vde; |
| 1929 |
} VDEState; |
| 1930 |
|
| 1931 |
static void vde_to_qemu(void *opaque) |
| 1932 |
{
|
| 1933 |
VDEState *s = opaque; |
| 1934 |
uint8_t buf[4096];
|
| 1935 |
int size;
|
| 1936 |
|
| 1937 |
size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); |
| 1938 |
if (size > 0) { |
| 1939 |
qemu_send_packet(s->vc, buf, size); |
| 1940 |
} |
| 1941 |
} |
| 1942 |
|
| 1943 |
static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 1944 |
{
|
| 1945 |
VDEState *s = vc->opaque; |
| 1946 |
ssize_t ret; |
| 1947 |
|
| 1948 |
do {
|
| 1949 |
ret = vde_send(s->vde, (const char *)buf, size, 0); |
| 1950 |
} while (ret < 0 && errno == EINTR); |
| 1951 |
|
| 1952 |
return ret;
|
| 1953 |
} |
| 1954 |
|
| 1955 |
static void vde_cleanup(VLANClientState *vc) |
| 1956 |
{
|
| 1957 |
VDEState *s = vc->opaque; |
| 1958 |
qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); |
| 1959 |
vde_close(s->vde); |
| 1960 |
qemu_free(s); |
| 1961 |
} |
| 1962 |
|
| 1963 |
static int net_vde_init(VLANState *vlan, const char *model, |
| 1964 |
const char *name, const char *sock, |
| 1965 |
int port, const char *group, int mode) |
| 1966 |
{
|
| 1967 |
VDEState *s; |
| 1968 |
char *init_group = (char *)group; |
| 1969 |
char *init_sock = (char *)sock; |
| 1970 |
|
| 1971 |
struct vde_open_args args = {
|
| 1972 |
.port = port, |
| 1973 |
.group = init_group, |
| 1974 |
.mode = mode, |
| 1975 |
}; |
| 1976 |
|
| 1977 |
s = qemu_mallocz(sizeof(VDEState));
|
| 1978 |
s->vde = vde_open(init_sock, (char *)"QEMU", &args); |
| 1979 |
if (!s->vde){
|
| 1980 |
free(s); |
| 1981 |
return -1; |
| 1982 |
} |
| 1983 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE, |
| 1984 |
vlan, NULL, model, name, NULL, |
| 1985 |
vde_receive, NULL, NULL, |
| 1986 |
vde_cleanup, s); |
| 1987 |
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
| 1988 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", |
| 1989 |
sock, vde_datafd(s->vde)); |
| 1990 |
return 0; |
| 1991 |
} |
| 1992 |
#endif
|
| 1993 |
|
| 1994 |
/* network connection */
|
| 1995 |
typedef struct NetSocketState { |
| 1996 |
VLANClientState *vc; |
| 1997 |
int fd;
|
| 1998 |
int state; /* 0 = getting length, 1 = getting data */ |
| 1999 |
unsigned int index; |
| 2000 |
unsigned int packet_len; |
| 2001 |
uint8_t buf[4096];
|
| 2002 |
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
| 2003 |
} NetSocketState; |
| 2004 |
|
| 2005 |
typedef struct NetSocketListenState { |
| 2006 |
VLANState *vlan; |
| 2007 |
char *model;
|
| 2008 |
char *name;
|
| 2009 |
int fd;
|
| 2010 |
} NetSocketListenState; |
| 2011 |
|
| 2012 |
/* XXX: we consider we can send the whole packet without blocking */
|
| 2013 |
static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 2014 |
{
|
| 2015 |
NetSocketState *s = vc->opaque; |
| 2016 |
uint32_t len; |
| 2017 |
len = htonl(size); |
| 2018 |
|
| 2019 |
send_all(s->fd, (const uint8_t *)&len, sizeof(len)); |
| 2020 |
return send_all(s->fd, buf, size);
|
| 2021 |
} |
| 2022 |
|
| 2023 |
static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 2024 |
{
|
| 2025 |
NetSocketState *s = vc->opaque; |
| 2026 |
|
| 2027 |
return sendto(s->fd, (const void *)buf, size, 0, |
| 2028 |
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); |
| 2029 |
} |
| 2030 |
|
| 2031 |
static void net_socket_send(void *opaque) |
| 2032 |
{
|
| 2033 |
NetSocketState *s = opaque; |
| 2034 |
int size, err;
|
| 2035 |
unsigned l;
|
| 2036 |
uint8_t buf1[4096];
|
| 2037 |
const uint8_t *buf;
|
| 2038 |
|
| 2039 |
size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); |
| 2040 |
if (size < 0) { |
| 2041 |
err = socket_error(); |
| 2042 |
if (err != EWOULDBLOCK)
|
| 2043 |
goto eoc;
|
| 2044 |
} else if (size == 0) { |
| 2045 |
/* end of connection */
|
| 2046 |
eoc:
|
| 2047 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| 2048 |
closesocket(s->fd); |
| 2049 |
return;
|
| 2050 |
} |
| 2051 |
buf = buf1; |
| 2052 |
while (size > 0) { |
| 2053 |
/* reassemble a packet from the network */
|
| 2054 |
switch(s->state) {
|
| 2055 |
case 0: |
| 2056 |
l = 4 - s->index;
|
| 2057 |
if (l > size)
|
| 2058 |
l = size; |
| 2059 |
memcpy(s->buf + s->index, buf, l); |
| 2060 |
buf += l; |
| 2061 |
size -= l; |
| 2062 |
s->index += l; |
| 2063 |
if (s->index == 4) { |
| 2064 |
/* got length */
|
| 2065 |
s->packet_len = ntohl(*(uint32_t *)s->buf); |
| 2066 |
s->index = 0;
|
| 2067 |
s->state = 1;
|
| 2068 |
} |
| 2069 |
break;
|
| 2070 |
case 1: |
| 2071 |
l = s->packet_len - s->index; |
| 2072 |
if (l > size)
|
| 2073 |
l = size; |
| 2074 |
if (s->index + l <= sizeof(s->buf)) { |
| 2075 |
memcpy(s->buf + s->index, buf, l); |
| 2076 |
} else {
|
| 2077 |
fprintf(stderr, "serious error: oversized packet received,"
|
| 2078 |
"connection terminated.\n");
|
| 2079 |
s->state = 0;
|
| 2080 |
goto eoc;
|
| 2081 |
} |
| 2082 |
|
| 2083 |
s->index += l; |
| 2084 |
buf += l; |
| 2085 |
size -= l; |
| 2086 |
if (s->index >= s->packet_len) {
|
| 2087 |
qemu_send_packet(s->vc, s->buf, s->packet_len); |
| 2088 |
s->index = 0;
|
| 2089 |
s->state = 0;
|
| 2090 |
} |
| 2091 |
break;
|
| 2092 |
} |
| 2093 |
} |
| 2094 |
} |
| 2095 |
|
| 2096 |
static void net_socket_send_dgram(void *opaque) |
| 2097 |
{
|
| 2098 |
NetSocketState *s = opaque; |
| 2099 |
int size;
|
| 2100 |
|
| 2101 |
size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); |
| 2102 |
if (size < 0) |
| 2103 |
return;
|
| 2104 |
if (size == 0) { |
| 2105 |
/* end of connection */
|
| 2106 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| 2107 |
return;
|
| 2108 |
} |
| 2109 |
qemu_send_packet(s->vc, s->buf, size); |
| 2110 |
} |
| 2111 |
|
| 2112 |
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) |
| 2113 |
{
|
| 2114 |
struct ip_mreq imr;
|
| 2115 |
int fd;
|
| 2116 |
int val, ret;
|
| 2117 |
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
| 2118 |
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
| 2119 |
inet_ntoa(mcastaddr->sin_addr), |
| 2120 |
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
| 2121 |
return -1; |
| 2122 |
|
| 2123 |
} |
| 2124 |
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
| 2125 |
if (fd < 0) { |
| 2126 |
perror("socket(PF_INET, SOCK_DGRAM)");
|
| 2127 |
return -1; |
| 2128 |
} |
| 2129 |
|
| 2130 |
val = 1;
|
| 2131 |
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
| 2132 |
(const char *)&val, sizeof(val)); |
| 2133 |
if (ret < 0) { |
| 2134 |
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
| 2135 |
goto fail;
|
| 2136 |
} |
| 2137 |
|
| 2138 |
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
| 2139 |
if (ret < 0) { |
| 2140 |
perror("bind");
|
| 2141 |
goto fail;
|
| 2142 |
} |
| 2143 |
|
| 2144 |
/* Add host to multicast group */
|
| 2145 |
imr.imr_multiaddr = mcastaddr->sin_addr; |
| 2146 |
imr.imr_interface.s_addr = htonl(INADDR_ANY); |
| 2147 |
|
| 2148 |
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
| 2149 |
(const char *)&imr, sizeof(struct ip_mreq)); |
| 2150 |
if (ret < 0) { |
| 2151 |
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
| 2152 |
goto fail;
|
| 2153 |
} |
| 2154 |
|
| 2155 |
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
| 2156 |
val = 1;
|
| 2157 |
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
| 2158 |
(const char *)&val, sizeof(val)); |
| 2159 |
if (ret < 0) { |
| 2160 |
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
| 2161 |
goto fail;
|
| 2162 |
} |
| 2163 |
|
| 2164 |
socket_set_nonblock(fd); |
| 2165 |
return fd;
|
| 2166 |
fail:
|
| 2167 |
if (fd >= 0) |
| 2168 |
closesocket(fd); |
| 2169 |
return -1; |
| 2170 |
} |
| 2171 |
|
| 2172 |
static void net_socket_cleanup(VLANClientState *vc) |
| 2173 |
{
|
| 2174 |
NetSocketState *s = vc->opaque; |
| 2175 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| 2176 |
close(s->fd); |
| 2177 |
qemu_free(s); |
| 2178 |
} |
| 2179 |
|
| 2180 |
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
| 2181 |
const char *model, |
| 2182 |
const char *name, |
| 2183 |
int fd, int is_connected) |
| 2184 |
{
|
| 2185 |
struct sockaddr_in saddr;
|
| 2186 |
int newfd;
|
| 2187 |
socklen_t saddr_len; |
| 2188 |
NetSocketState *s; |
| 2189 |
|
| 2190 |
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
| 2191 |
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
| 2192 |
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
| 2193 |
*/
|
| 2194 |
|
| 2195 |
if (is_connected) {
|
| 2196 |
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
| 2197 |
/* must be bound */
|
| 2198 |
if (saddr.sin_addr.s_addr==0) { |
| 2199 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
| 2200 |
fd); |
| 2201 |
return NULL; |
| 2202 |
} |
| 2203 |
/* clone dgram socket */
|
| 2204 |
newfd = net_socket_mcast_create(&saddr); |
| 2205 |
if (newfd < 0) { |
| 2206 |
/* error already reported by net_socket_mcast_create() */
|
| 2207 |
close(fd); |
| 2208 |
return NULL; |
| 2209 |
} |
| 2210 |
/* clone newfd to fd, close newfd */
|
| 2211 |
dup2(newfd, fd); |
| 2212 |
close(newfd); |
| 2213 |
|
| 2214 |
} else {
|
| 2215 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
| 2216 |
fd, strerror(errno)); |
| 2217 |
return NULL; |
| 2218 |
} |
| 2219 |
} |
| 2220 |
|
| 2221 |
s = qemu_mallocz(sizeof(NetSocketState));
|
| 2222 |
s->fd = fd; |
| 2223 |
|
| 2224 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET, |
| 2225 |
vlan, NULL, model, name, NULL, |
| 2226 |
net_socket_receive_dgram, NULL, NULL, |
| 2227 |
net_socket_cleanup, s); |
| 2228 |
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
| 2229 |
|
| 2230 |
/* mcast: save bound address as dst */
|
| 2231 |
if (is_connected) s->dgram_dst=saddr;
|
| 2232 |
|
| 2233 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 2234 |
"socket: fd=%d (%s mcast=%s:%d)",
|
| 2235 |
fd, is_connected? "cloned" : "", |
| 2236 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| 2237 |
return s;
|
| 2238 |
} |
| 2239 |
|
| 2240 |
static void net_socket_connect(void *opaque) |
| 2241 |
{
|
| 2242 |
NetSocketState *s = opaque; |
| 2243 |
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
| 2244 |
} |
| 2245 |
|
| 2246 |
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
|
| 2247 |
const char *model, |
| 2248 |
const char *name, |
| 2249 |
int fd, int is_connected) |
| 2250 |
{
|
| 2251 |
NetSocketState *s; |
| 2252 |
s = qemu_mallocz(sizeof(NetSocketState));
|
| 2253 |
s->fd = fd; |
| 2254 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET, |
| 2255 |
vlan, NULL, model, name, NULL, |
| 2256 |
net_socket_receive, NULL, NULL, |
| 2257 |
net_socket_cleanup, s); |
| 2258 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 2259 |
"socket: fd=%d", fd);
|
| 2260 |
if (is_connected) {
|
| 2261 |
net_socket_connect(s); |
| 2262 |
} else {
|
| 2263 |
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
| 2264 |
} |
| 2265 |
return s;
|
| 2266 |
} |
| 2267 |
|
| 2268 |
static NetSocketState *net_socket_fd_init(VLANState *vlan,
|
| 2269 |
const char *model, const char *name, |
| 2270 |
int fd, int is_connected) |
| 2271 |
{
|
| 2272 |
int so_type = -1, optlen=sizeof(so_type); |
| 2273 |
|
| 2274 |
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
| 2275 |
(socklen_t *)&optlen)< 0) {
|
| 2276 |
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
| 2277 |
return NULL; |
| 2278 |
} |
| 2279 |
switch(so_type) {
|
| 2280 |
case SOCK_DGRAM:
|
| 2281 |
return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
|
| 2282 |
case SOCK_STREAM:
|
| 2283 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
| 2284 |
default:
|
| 2285 |
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
| 2286 |
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
| 2287 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
| 2288 |
} |
| 2289 |
return NULL; |
| 2290 |
} |
| 2291 |
|
| 2292 |
static void net_socket_accept(void *opaque) |
| 2293 |
{
|
| 2294 |
NetSocketListenState *s = opaque; |
| 2295 |
NetSocketState *s1; |
| 2296 |
struct sockaddr_in saddr;
|
| 2297 |
socklen_t len; |
| 2298 |
int fd;
|
| 2299 |
|
| 2300 |
for(;;) {
|
| 2301 |
len = sizeof(saddr);
|
| 2302 |
fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
|
| 2303 |
if (fd < 0 && errno != EINTR) { |
| 2304 |
return;
|
| 2305 |
} else if (fd >= 0) { |
| 2306 |
break;
|
| 2307 |
} |
| 2308 |
} |
| 2309 |
s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
|
| 2310 |
if (!s1) {
|
| 2311 |
closesocket(fd); |
| 2312 |
} else {
|
| 2313 |
snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
|
| 2314 |
"socket: connection from %s:%d",
|
| 2315 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| 2316 |
} |
| 2317 |
} |
| 2318 |
|
| 2319 |
static int net_socket_listen_init(VLANState *vlan, |
| 2320 |
const char *model, |
| 2321 |
const char *name, |
| 2322 |
const char *host_str) |
| 2323 |
{
|
| 2324 |
NetSocketListenState *s; |
| 2325 |
int fd, val, ret;
|
| 2326 |
struct sockaddr_in saddr;
|
| 2327 |
|
| 2328 |
if (parse_host_port(&saddr, host_str) < 0) |
| 2329 |
return -1; |
| 2330 |
|
| 2331 |
s = qemu_mallocz(sizeof(NetSocketListenState));
|
| 2332 |
|
| 2333 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
| 2334 |
if (fd < 0) { |
| 2335 |
perror("socket");
|
| 2336 |
return -1; |
| 2337 |
} |
| 2338 |
socket_set_nonblock(fd); |
| 2339 |
|
| 2340 |
/* allow fast reuse */
|
| 2341 |
val = 1;
|
| 2342 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); |
| 2343 |
|
| 2344 |
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| 2345 |
if (ret < 0) { |
| 2346 |
perror("bind");
|
| 2347 |
return -1; |
| 2348 |
} |
| 2349 |
ret = listen(fd, 0);
|
| 2350 |
if (ret < 0) { |
| 2351 |
perror("listen");
|
| 2352 |
return -1; |
| 2353 |
} |
| 2354 |
s->vlan = vlan; |
| 2355 |
s->model = qemu_strdup(model); |
| 2356 |
s->name = name ? qemu_strdup(name) : NULL;
|
| 2357 |
s->fd = fd; |
| 2358 |
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
| 2359 |
return 0; |
| 2360 |
} |
| 2361 |
|
| 2362 |
static int net_socket_connect_init(VLANState *vlan, |
| 2363 |
const char *model, |
| 2364 |
const char *name, |
| 2365 |
const char *host_str) |
| 2366 |
{
|
| 2367 |
NetSocketState *s; |
| 2368 |
int fd, connected, ret, err;
|
| 2369 |
struct sockaddr_in saddr;
|
| 2370 |
|
| 2371 |
if (parse_host_port(&saddr, host_str) < 0) |
| 2372 |
return -1; |
| 2373 |
|
| 2374 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
| 2375 |
if (fd < 0) { |
| 2376 |
perror("socket");
|
| 2377 |
return -1; |
| 2378 |
} |
| 2379 |
socket_set_nonblock(fd); |
| 2380 |
|
| 2381 |
connected = 0;
|
| 2382 |
for(;;) {
|
| 2383 |
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| 2384 |
if (ret < 0) { |
| 2385 |
err = socket_error(); |
| 2386 |
if (err == EINTR || err == EWOULDBLOCK) {
|
| 2387 |
} else if (err == EINPROGRESS) { |
| 2388 |
break;
|
| 2389 |
#ifdef _WIN32
|
| 2390 |
} else if (err == WSAEALREADY) { |
| 2391 |
break;
|
| 2392 |
#endif
|
| 2393 |
} else {
|
| 2394 |
perror("connect");
|
| 2395 |
closesocket(fd); |
| 2396 |
return -1; |
| 2397 |
} |
| 2398 |
} else {
|
| 2399 |
connected = 1;
|
| 2400 |
break;
|
| 2401 |
} |
| 2402 |
} |
| 2403 |
s = net_socket_fd_init(vlan, model, name, fd, connected); |
| 2404 |
if (!s)
|
| 2405 |
return -1; |
| 2406 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 2407 |
"socket: connect to %s:%d",
|
| 2408 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| 2409 |
return 0; |
| 2410 |
} |
| 2411 |
|
| 2412 |
static int net_socket_mcast_init(VLANState *vlan, |
| 2413 |
const char *model, |
| 2414 |
const char *name, |
| 2415 |
const char *host_str) |
| 2416 |
{
|
| 2417 |
NetSocketState *s; |
| 2418 |
int fd;
|
| 2419 |
struct sockaddr_in saddr;
|
| 2420 |
|
| 2421 |
if (parse_host_port(&saddr, host_str) < 0) |
| 2422 |
return -1; |
| 2423 |
|
| 2424 |
|
| 2425 |
fd = net_socket_mcast_create(&saddr); |
| 2426 |
if (fd < 0) |
| 2427 |
return -1; |
| 2428 |
|
| 2429 |
s = net_socket_fd_init(vlan, model, name, fd, 0);
|
| 2430 |
if (!s)
|
| 2431 |
return -1; |
| 2432 |
|
| 2433 |
s->dgram_dst = saddr; |
| 2434 |
|
| 2435 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 2436 |
"socket: mcast=%s:%d",
|
| 2437 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| 2438 |
return 0; |
| 2439 |
|
| 2440 |
} |
| 2441 |
|
| 2442 |
typedef struct DumpState { |
| 2443 |
VLANClientState *pcap_vc; |
| 2444 |
int fd;
|
| 2445 |
int pcap_caplen;
|
| 2446 |
} DumpState; |
| 2447 |
|
| 2448 |
#define PCAP_MAGIC 0xa1b2c3d4 |
| 2449 |
|
| 2450 |
struct pcap_file_hdr {
|
| 2451 |
uint32_t magic; |
| 2452 |
uint16_t version_major; |
| 2453 |
uint16_t version_minor; |
| 2454 |
int32_t thiszone; |
| 2455 |
uint32_t sigfigs; |
| 2456 |
uint32_t snaplen; |
| 2457 |
uint32_t linktype; |
| 2458 |
}; |
| 2459 |
|
| 2460 |
struct pcap_sf_pkthdr {
|
| 2461 |
struct {
|
| 2462 |
int32_t tv_sec; |
| 2463 |
int32_t tv_usec; |
| 2464 |
} ts; |
| 2465 |
uint32_t caplen; |
| 2466 |
uint32_t len; |
| 2467 |
}; |
| 2468 |
|
| 2469 |
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
| 2470 |
{
|
| 2471 |
DumpState *s = vc->opaque; |
| 2472 |
struct pcap_sf_pkthdr hdr;
|
| 2473 |
int64_t ts; |
| 2474 |
int caplen;
|
| 2475 |
|
| 2476 |
/* Early return in case of previous error. */
|
| 2477 |
if (s->fd < 0) { |
| 2478 |
return size;
|
| 2479 |
} |
| 2480 |
|
| 2481 |
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
|
| 2482 |
caplen = size > s->pcap_caplen ? s->pcap_caplen : size; |
| 2483 |
|
| 2484 |
hdr.ts.tv_sec = ts / 1000000;
|
| 2485 |
hdr.ts.tv_usec = ts % 1000000;
|
| 2486 |
hdr.caplen = caplen; |
| 2487 |
hdr.len = size; |
| 2488 |
if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || |
| 2489 |
write(s->fd, buf, caplen) != caplen) {
|
| 2490 |
qemu_log("-net dump write error - stop dump\n");
|
| 2491 |
close(s->fd); |
| 2492 |
s->fd = -1;
|
| 2493 |
} |
| 2494 |
|
| 2495 |
return size;
|
| 2496 |
} |
| 2497 |
|
| 2498 |
static void net_dump_cleanup(VLANClientState *vc) |
| 2499 |
{
|
| 2500 |
DumpState *s = vc->opaque; |
| 2501 |
|
| 2502 |
close(s->fd); |
| 2503 |
qemu_free(s); |
| 2504 |
} |
| 2505 |
|
| 2506 |
static int net_dump_init(VLANState *vlan, const char *device, |
| 2507 |
const char *name, const char *filename, int len) |
| 2508 |
{
|
| 2509 |
struct pcap_file_hdr hdr;
|
| 2510 |
DumpState *s; |
| 2511 |
|
| 2512 |
s = qemu_malloc(sizeof(DumpState));
|
| 2513 |
|
| 2514 |
s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
|
| 2515 |
if (s->fd < 0) { |
| 2516 |
qemu_error("-net dump: can't open %s\n", filename);
|
| 2517 |
return -1; |
| 2518 |
} |
| 2519 |
|
| 2520 |
s->pcap_caplen = len; |
| 2521 |
|
| 2522 |
hdr.magic = PCAP_MAGIC; |
| 2523 |
hdr.version_major = 2;
|
| 2524 |
hdr.version_minor = 4;
|
| 2525 |
hdr.thiszone = 0;
|
| 2526 |
hdr.sigfigs = 0;
|
| 2527 |
hdr.snaplen = s->pcap_caplen; |
| 2528 |
hdr.linktype = 1;
|
| 2529 |
|
| 2530 |
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { |
| 2531 |
qemu_error("-net dump write error: %s\n", strerror(errno));
|
| 2532 |
close(s->fd); |
| 2533 |
qemu_free(s); |
| 2534 |
return -1; |
| 2535 |
} |
| 2536 |
|
| 2537 |
s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP, |
| 2538 |
vlan, NULL, device, name, NULL, |
| 2539 |
dump_receive, NULL, NULL, |
| 2540 |
net_dump_cleanup, s); |
| 2541 |
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
|
| 2542 |
"dump to %s (len=%d)", filename, len);
|
| 2543 |
return 0; |
| 2544 |
} |
| 2545 |
|
| 2546 |
/* find or alloc a new VLAN */
|
| 2547 |
VLANState *qemu_find_vlan(int id, int allocate) |
| 2548 |
{
|
| 2549 |
VLANState *vlan; |
| 2550 |
|
| 2551 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 2552 |
if (vlan->id == id) {
|
| 2553 |
return vlan;
|
| 2554 |
} |
| 2555 |
} |
| 2556 |
|
| 2557 |
if (!allocate) {
|
| 2558 |
return NULL; |
| 2559 |
} |
| 2560 |
|
| 2561 |
vlan = qemu_mallocz(sizeof(VLANState));
|
| 2562 |
vlan->id = id; |
| 2563 |
QTAILQ_INIT(&vlan->clients); |
| 2564 |
|
| 2565 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
| 2566 |
qemu_vlan_deliver_packet_iov, |
| 2567 |
vlan); |
| 2568 |
|
| 2569 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
| 2570 |
|
| 2571 |
return vlan;
|
| 2572 |
} |
| 2573 |
|
| 2574 |
VLANClientState *qemu_find_netdev(const char *id) |
| 2575 |
{
|
| 2576 |
VLANClientState *vc; |
| 2577 |
|
| 2578 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 2579 |
if (!strcmp(vc->name, id)) {
|
| 2580 |
return vc;
|
| 2581 |
} |
| 2582 |
} |
| 2583 |
|
| 2584 |
return NULL; |
| 2585 |
} |
| 2586 |
|
| 2587 |
static int nic_get_free_idx(void) |
| 2588 |
{
|
| 2589 |
int index;
|
| 2590 |
|
| 2591 |
for (index = 0; index < MAX_NICS; index++) |
| 2592 |
if (!nd_table[index].used)
|
| 2593 |
return index;
|
| 2594 |
return -1; |
| 2595 |
} |
| 2596 |
|
| 2597 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
| 2598 |
{
|
| 2599 |
int i;
|
| 2600 |
|
| 2601 |
if (!arg || strcmp(arg, "?")) |
| 2602 |
return 0; |
| 2603 |
|
| 2604 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
| 2605 |
for (i = 0 ; models[i]; i++) |
| 2606 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
| 2607 |
return 1; |
| 2608 |
} |
| 2609 |
|
| 2610 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
| 2611 |
{
|
| 2612 |
const char *models[2]; |
| 2613 |
|
| 2614 |
models[0] = model;
|
| 2615 |
models[1] = NULL; |
| 2616 |
|
| 2617 |
if (qemu_show_nic_models(nd->model, models))
|
| 2618 |
exit(0);
|
| 2619 |
if (qemu_find_nic_model(nd, models, model) < 0) |
| 2620 |
exit(1);
|
| 2621 |
} |
| 2622 |
|
| 2623 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
| 2624 |
const char *default_model) |
| 2625 |
{
|
| 2626 |
int i;
|
| 2627 |
|
| 2628 |
if (!nd->model)
|
| 2629 |
nd->model = qemu_strdup(default_model); |
| 2630 |
|
| 2631 |
for (i = 0 ; models[i]; i++) { |
| 2632 |
if (strcmp(nd->model, models[i]) == 0) |
| 2633 |
return i;
|
| 2634 |
} |
| 2635 |
|
| 2636 |
qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
|
| 2637 |
return -1; |
| 2638 |
} |
| 2639 |
|
| 2640 |
static int net_handle_fd_param(Monitor *mon, const char *param) |
| 2641 |
{
|
| 2642 |
if (!qemu_isdigit(param[0])) { |
| 2643 |
int fd;
|
| 2644 |
|
| 2645 |
fd = monitor_get_fd(mon, param); |
| 2646 |
if (fd == -1) { |
| 2647 |
qemu_error("No file descriptor named %s found", param);
|
| 2648 |
return -1; |
| 2649 |
} |
| 2650 |
|
| 2651 |
return fd;
|
| 2652 |
} else {
|
| 2653 |
return strtol(param, NULL, 0); |
| 2654 |
} |
| 2655 |
} |
| 2656 |
|
| 2657 |
static int net_init_nic(QemuOpts *opts, |
| 2658 |
Monitor *mon, |
| 2659 |
const char *name, |
| 2660 |
VLANState *vlan) |
| 2661 |
{
|
| 2662 |
int idx;
|
| 2663 |
NICInfo *nd; |
| 2664 |
const char *netdev; |
| 2665 |
|
| 2666 |
idx = nic_get_free_idx(); |
| 2667 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
| 2668 |
qemu_error("Too Many NICs\n");
|
| 2669 |
return -1; |
| 2670 |
} |
| 2671 |
|
| 2672 |
nd = &nd_table[idx]; |
| 2673 |
|
| 2674 |
memset(nd, 0, sizeof(*nd)); |
| 2675 |
|
| 2676 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
| 2677 |
nd->netdev = qemu_find_netdev(netdev); |
| 2678 |
if (!nd->netdev) {
|
| 2679 |
qemu_error("netdev '%s' not found\n", netdev);
|
| 2680 |
return -1; |
| 2681 |
} |
| 2682 |
} else {
|
| 2683 |
assert(vlan); |
| 2684 |
nd->vlan = vlan; |
| 2685 |
} |
| 2686 |
if (name) {
|
| 2687 |
nd->name = qemu_strdup(name); |
| 2688 |
} |
| 2689 |
if (qemu_opt_get(opts, "model")) { |
| 2690 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
| 2691 |
} |
| 2692 |
if (qemu_opt_get(opts, "addr")) { |
| 2693 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
| 2694 |
} |
| 2695 |
|
| 2696 |
nd->macaddr[0] = 0x52; |
| 2697 |
nd->macaddr[1] = 0x54; |
| 2698 |
nd->macaddr[2] = 0x00; |
| 2699 |
nd->macaddr[3] = 0x12; |
| 2700 |
nd->macaddr[4] = 0x34; |
| 2701 |
nd->macaddr[5] = 0x56 + idx; |
| 2702 |
|
| 2703 |
if (qemu_opt_get(opts, "macaddr") && |
| 2704 |
parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { |
| 2705 |
qemu_error("invalid syntax for ethernet address\n");
|
| 2706 |
return -1; |
| 2707 |
} |
| 2708 |
|
| 2709 |
nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
|
| 2710 |
if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
|
| 2711 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
| 2712 |
qemu_error("invalid # of vectors: %d\n", nd->nvectors);
|
| 2713 |
return -1; |
| 2714 |
} |
| 2715 |
|
| 2716 |
nd->used = 1;
|
| 2717 |
if (vlan) {
|
| 2718 |
nd->vlan->nb_guest_devs++; |
| 2719 |
} |
| 2720 |
nb_nics++; |
| 2721 |
|
| 2722 |
return idx;
|
| 2723 |
} |
| 2724 |
|
| 2725 |
#if defined(CONFIG_SLIRP)
|
| 2726 |
static int net_init_slirp_configs(const char *name, const char *value, void *opaque) |
| 2727 |
{
|
| 2728 |
struct slirp_config_str *config;
|
| 2729 |
|
| 2730 |
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { |
| 2731 |
return 0; |
| 2732 |
} |
| 2733 |
|
| 2734 |
config = qemu_mallocz(sizeof(*config));
|
| 2735 |
|
| 2736 |
pstrcpy(config->str, sizeof(config->str), value);
|
| 2737 |
|
| 2738 |
if (!strcmp(name, "hostfwd")) { |
| 2739 |
config->flags = SLIRP_CFG_HOSTFWD; |
| 2740 |
} |
| 2741 |
|
| 2742 |
config->next = slirp_configs; |
| 2743 |
slirp_configs = config; |
| 2744 |
|
| 2745 |
return 0; |
| 2746 |
} |
| 2747 |
|
| 2748 |
static int net_init_slirp(QemuOpts *opts, |
| 2749 |
Monitor *mon, |
| 2750 |
const char *name, |
| 2751 |
VLANState *vlan) |
| 2752 |
{
|
| 2753 |
struct slirp_config_str *config;
|
| 2754 |
const char *vhost; |
| 2755 |
const char *vhostname; |
| 2756 |
const char *vdhcp_start; |
| 2757 |
const char *vnamesrv; |
| 2758 |
const char *tftp_export; |
| 2759 |
const char *bootfile; |
| 2760 |
const char *smb_export; |
| 2761 |
const char *vsmbsrv; |
| 2762 |
char *vnet = NULL; |
| 2763 |
int restricted = 0; |
| 2764 |
int ret;
|
| 2765 |
|
| 2766 |
vhost = qemu_opt_get(opts, "host");
|
| 2767 |
vhostname = qemu_opt_get(opts, "hostname");
|
| 2768 |
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
| 2769 |
vnamesrv = qemu_opt_get(opts, "dns");
|
| 2770 |
tftp_export = qemu_opt_get(opts, "tftp");
|
| 2771 |
bootfile = qemu_opt_get(opts, "bootfile");
|
| 2772 |
smb_export = qemu_opt_get(opts, "smb");
|
| 2773 |
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
| 2774 |
|
| 2775 |
if (qemu_opt_get(opts, "ip")) { |
| 2776 |
const char *ip = qemu_opt_get(opts, "ip"); |
| 2777 |
int l = strlen(ip) + strlen("/24") + 1; |
| 2778 |
|
| 2779 |
vnet = qemu_malloc(l); |
| 2780 |
|
| 2781 |
/* emulate legacy ip= parameter */
|
| 2782 |
pstrcpy(vnet, l, ip); |
| 2783 |
pstrcat(vnet, l, "/24");
|
| 2784 |
} |
| 2785 |
|
| 2786 |
if (qemu_opt_get(opts, "net")) { |
| 2787 |
if (vnet) {
|
| 2788 |
qemu_free(vnet); |
| 2789 |
} |
| 2790 |
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
| 2791 |
} |
| 2792 |
|
| 2793 |
if (qemu_opt_get(opts, "restrict") && |
| 2794 |
qemu_opt_get(opts, "restrict")[0] == 'y') { |
| 2795 |
restricted = 1;
|
| 2796 |
} |
| 2797 |
|
| 2798 |
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
| 2799 |
|
| 2800 |
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
| 2801 |
vhostname, tftp_export, bootfile, vdhcp_start, |
| 2802 |
vnamesrv, smb_export, vsmbsrv); |
| 2803 |
|
| 2804 |
while (slirp_configs) {
|
| 2805 |
config = slirp_configs; |
| 2806 |
slirp_configs = config->next; |
| 2807 |
qemu_free(config); |
| 2808 |
} |
| 2809 |
|
| 2810 |
if (ret != -1 && vlan) { |
| 2811 |
vlan->nb_host_devs++; |
| 2812 |
} |
| 2813 |
|
| 2814 |
qemu_free(vnet); |
| 2815 |
|
| 2816 |
return ret;
|
| 2817 |
} |
| 2818 |
#endif /* CONFIG_SLIRP */ |
| 2819 |
|
| 2820 |
#ifdef _WIN32
|
| 2821 |
static int net_init_tap_win32(QemuOpts *opts, |
| 2822 |
Monitor *mon, |
| 2823 |
const char *name, |
| 2824 |
VLANState *vlan) |
| 2825 |
{
|
| 2826 |
const char *ifname; |
| 2827 |
|
| 2828 |
ifname = qemu_opt_get(opts, "ifname");
|
| 2829 |
|
| 2830 |
if (!ifname) {
|
| 2831 |
qemu_error("tap: no interface name\n");
|
| 2832 |
return -1; |
| 2833 |
} |
| 2834 |
|
| 2835 |
if (tap_win32_init(vlan, "tap", name, ifname) == -1) { |
| 2836 |
return -1; |
| 2837 |
} |
| 2838 |
|
| 2839 |
if (vlan) {
|
| 2840 |
vlan->nb_host_devs++; |
| 2841 |
} |
| 2842 |
|
| 2843 |
return 0; |
| 2844 |
} |
| 2845 |
#elif !defined(_AIX)
|
| 2846 |
static int net_init_tap(QemuOpts *opts, |
| 2847 |
Monitor *mon, |
| 2848 |
const char *name, |
| 2849 |
VLANState *vlan) |
| 2850 |
{
|
| 2851 |
TAPState *s; |
| 2852 |
int fd, vnet_hdr;
|
| 2853 |
|
| 2854 |
if (qemu_opt_get(opts, "fd")) { |
| 2855 |
if (qemu_opt_get(opts, "ifname") || |
| 2856 |
qemu_opt_get(opts, "script") ||
|
| 2857 |
qemu_opt_get(opts, "downscript") ||
|
| 2858 |
qemu_opt_get(opts, "vnet_hdr")) {
|
| 2859 |
qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
|
| 2860 |
return -1; |
| 2861 |
} |
| 2862 |
|
| 2863 |
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
| 2864 |
if (fd == -1) { |
| 2865 |
return -1; |
| 2866 |
} |
| 2867 |
|
| 2868 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
| 2869 |
|
| 2870 |
vnet_hdr = tap_probe_vnet_hdr(fd); |
| 2871 |
} else {
|
| 2872 |
if (!qemu_opt_get(opts, "script")) { |
| 2873 |
qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
|
| 2874 |
} |
| 2875 |
|
| 2876 |
if (!qemu_opt_get(opts, "downscript")) { |
| 2877 |
qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
|
| 2878 |
} |
| 2879 |
|
| 2880 |
fd = net_tap_init(opts, &vnet_hdr); |
| 2881 |
} |
| 2882 |
|
| 2883 |
s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
|
| 2884 |
if (!s) {
|
| 2885 |
close(fd); |
| 2886 |
return -1; |
| 2887 |
} |
| 2888 |
|
| 2889 |
if (tap_set_sndbuf(s, opts) < 0) { |
| 2890 |
return -1; |
| 2891 |
} |
| 2892 |
|
| 2893 |
if (qemu_opt_get(opts, "fd")) { |
| 2894 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); |
| 2895 |
} else {
|
| 2896 |
const char *ifname, *script, *downscript; |
| 2897 |
|
| 2898 |
ifname = qemu_opt_get(opts, "ifname");
|
| 2899 |
script = qemu_opt_get(opts, "script");
|
| 2900 |
downscript = qemu_opt_get(opts, "downscript");
|
| 2901 |
|
| 2902 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
| 2903 |
"ifname=%s,script=%s,downscript=%s",
|
| 2904 |
ifname, script, downscript); |
| 2905 |
|
| 2906 |
if (strcmp(downscript, "no") != 0) { |
| 2907 |
snprintf(s->down_script, sizeof(s->down_script), "%s", downscript); |
| 2908 |
snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); |
| 2909 |
} |
| 2910 |
} |
| 2911 |
|
| 2912 |
if (vlan) {
|
| 2913 |
vlan->nb_host_devs++; |
| 2914 |
} |
| 2915 |
|
| 2916 |
return 0; |
| 2917 |
} |
| 2918 |
#endif
|
| 2919 |
|
| 2920 |
static int net_init_socket(QemuOpts *opts, |
| 2921 |
Monitor *mon, |
| 2922 |
const char *name, |
| 2923 |
VLANState *vlan) |
| 2924 |
{
|
| 2925 |
if (qemu_opt_get(opts, "fd")) { |
| 2926 |
int fd;
|
| 2927 |
|
| 2928 |
if (qemu_opt_get(opts, "listen") || |
| 2929 |
qemu_opt_get(opts, "connect") ||
|
| 2930 |
qemu_opt_get(opts, "mcast")) {
|
| 2931 |
qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
|
| 2932 |
return -1; |
| 2933 |
} |
| 2934 |
|
| 2935 |
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
| 2936 |
if (fd == -1) { |
| 2937 |
return -1; |
| 2938 |
} |
| 2939 |
|
| 2940 |
if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { |
| 2941 |
close(fd); |
| 2942 |
return -1; |
| 2943 |
} |
| 2944 |
} else if (qemu_opt_get(opts, "listen")) { |
| 2945 |
const char *listen; |
| 2946 |
|
| 2947 |
if (qemu_opt_get(opts, "fd") || |
| 2948 |
qemu_opt_get(opts, "connect") ||
|
| 2949 |
qemu_opt_get(opts, "mcast")) {
|
| 2950 |
qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
|
| 2951 |
return -1; |
| 2952 |
} |
| 2953 |
|
| 2954 |
listen = qemu_opt_get(opts, "listen");
|
| 2955 |
|
| 2956 |
if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { |
| 2957 |
return -1; |
| 2958 |
} |
| 2959 |
} else if (qemu_opt_get(opts, "connect")) { |
| 2960 |
const char *connect; |
| 2961 |
|
| 2962 |
if (qemu_opt_get(opts, "fd") || |
| 2963 |
qemu_opt_get(opts, "listen") ||
|
| 2964 |
qemu_opt_get(opts, "mcast")) {
|
| 2965 |
qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
|
| 2966 |
return -1; |
| 2967 |
} |
| 2968 |
|
| 2969 |
connect = qemu_opt_get(opts, "connect");
|
| 2970 |
|
| 2971 |
if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { |
| 2972 |
return -1; |
| 2973 |
} |
| 2974 |
} else if (qemu_opt_get(opts, "mcast")) { |
| 2975 |
const char *mcast; |
| 2976 |
|
| 2977 |
if (qemu_opt_get(opts, "fd") || |
| 2978 |
qemu_opt_get(opts, "connect") ||
|
| 2979 |
qemu_opt_get(opts, "listen")) {
|
| 2980 |
qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
|
| 2981 |
return -1; |
| 2982 |
} |
| 2983 |
|
| 2984 |
mcast = qemu_opt_get(opts, "mcast");
|
| 2985 |
|
| 2986 |
if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) { |
| 2987 |
return -1; |
| 2988 |
} |
| 2989 |
} else {
|
| 2990 |
qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
|
| 2991 |
return -1; |
| 2992 |
} |
| 2993 |
|
| 2994 |
if (vlan) {
|
| 2995 |
vlan->nb_host_devs++; |
| 2996 |
} |
| 2997 |
|
| 2998 |
return 0; |
| 2999 |
} |
| 3000 |
|
| 3001 |
#ifdef CONFIG_VDE
|
| 3002 |
static int net_init_vde(QemuOpts *opts, |
| 3003 |
Monitor *mon, |
| 3004 |
const char *name, |
| 3005 |
VLANState *vlan) |
| 3006 |
{
|
| 3007 |
const char *sock; |
| 3008 |
const char *group; |
| 3009 |
int port, mode;
|
| 3010 |
|
| 3011 |
sock = qemu_opt_get(opts, "sock");
|
| 3012 |
group = qemu_opt_get(opts, "group");
|
| 3013 |
|
| 3014 |
port = qemu_opt_get_number(opts, "port", 0); |
| 3015 |
mode = qemu_opt_get_number(opts, "mode", 0700); |
| 3016 |
|
| 3017 |
if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) { |
| 3018 |
return -1; |
| 3019 |
} |
| 3020 |
|
| 3021 |
if (vlan) {
|
| 3022 |
vlan->nb_host_devs++; |
| 3023 |
} |
| 3024 |
|
| 3025 |
return 0; |
| 3026 |
} |
| 3027 |
#endif
|
| 3028 |
|
| 3029 |
static int net_init_dump(QemuOpts *opts, |
| 3030 |
Monitor *mon, |
| 3031 |
const char *name, |
| 3032 |
VLANState *vlan) |
| 3033 |
{
|
| 3034 |
int len;
|
| 3035 |
const char *file; |
| 3036 |
char def_file[128]; |
| 3037 |
|
| 3038 |
assert(vlan); |
| 3039 |
|
| 3040 |
file = qemu_opt_get(opts, "file");
|
| 3041 |
if (!file) {
|
| 3042 |
snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id); |
| 3043 |
file = def_file; |
| 3044 |
} |
| 3045 |
|
| 3046 |
len = qemu_opt_get_size(opts, "len", 65536); |
| 3047 |
|
| 3048 |
return net_dump_init(vlan, "dump", name, file, len); |
| 3049 |
} |
| 3050 |
|
| 3051 |
#define NET_COMMON_PARAMS_DESC \
|
| 3052 |
{ \
|
| 3053 |
.name = "type", \
|
| 3054 |
.type = QEMU_OPT_STRING, \ |
| 3055 |
.help = "net client type (nic, tap etc.)", \
|
| 3056 |
}, { \
|
| 3057 |
.name = "vlan", \
|
| 3058 |
.type = QEMU_OPT_NUMBER, \ |
| 3059 |
.help = "vlan number", \
|
| 3060 |
}, { \
|
| 3061 |
.name = "name", \
|
| 3062 |
.type = QEMU_OPT_STRING, \ |
| 3063 |
.help = "identifier for monitor commands", \
|
| 3064 |
} |
| 3065 |
|
| 3066 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
| 3067 |
Monitor *mon, |
| 3068 |
const char *name, |
| 3069 |
VLANState *vlan); |
| 3070 |
|
| 3071 |
/* magic number, but compiler will warn if too small */
|
| 3072 |
#define NET_MAX_DESC 20 |
| 3073 |
|
| 3074 |
static struct { |
| 3075 |
const char *type; |
| 3076 |
net_client_init_func init; |
| 3077 |
QemuOptDesc desc[NET_MAX_DESC]; |
| 3078 |
} net_client_types[] = {
|
| 3079 |
{
|
| 3080 |
.type = "none",
|
| 3081 |
.desc = {
|
| 3082 |
NET_COMMON_PARAMS_DESC, |
| 3083 |
{ /* end of list */ }
|
| 3084 |
}, |
| 3085 |
}, {
|
| 3086 |
.type = "nic",
|
| 3087 |
.init = net_init_nic, |
| 3088 |
.desc = {
|
| 3089 |
NET_COMMON_PARAMS_DESC, |
| 3090 |
{
|
| 3091 |
.name = "netdev",
|
| 3092 |
.type = QEMU_OPT_STRING, |
| 3093 |
.help = "id of -netdev to connect to",
|
| 3094 |
}, |
| 3095 |
{
|
| 3096 |
.name = "macaddr",
|
| 3097 |
.type = QEMU_OPT_STRING, |
| 3098 |
.help = "MAC address",
|
| 3099 |
}, {
|
| 3100 |
.name = "model",
|
| 3101 |
.type = QEMU_OPT_STRING, |
| 3102 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
| 3103 |
}, {
|
| 3104 |
.name = "addr",
|
| 3105 |
.type = QEMU_OPT_STRING, |
| 3106 |
.help = "PCI device address",
|
| 3107 |
}, {
|
| 3108 |
.name = "vectors",
|
| 3109 |
.type = QEMU_OPT_NUMBER, |
| 3110 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
| 3111 |
}, |
| 3112 |
{ /* end of list */ }
|
| 3113 |
}, |
| 3114 |
#ifdef CONFIG_SLIRP
|
| 3115 |
}, {
|
| 3116 |
.type = "user",
|
| 3117 |
.init = net_init_slirp, |
| 3118 |
.desc = {
|
| 3119 |
NET_COMMON_PARAMS_DESC, |
| 3120 |
{
|
| 3121 |
.name = "hostname",
|
| 3122 |
.type = QEMU_OPT_STRING, |
| 3123 |
.help = "client hostname reported by the builtin DHCP server",
|
| 3124 |
}, {
|
| 3125 |
.name = "restrict",
|
| 3126 |
.type = QEMU_OPT_STRING, |
| 3127 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
| 3128 |
}, {
|
| 3129 |
.name = "ip",
|
| 3130 |
.type = QEMU_OPT_STRING, |
| 3131 |
.help = "legacy parameter, use net= instead",
|
| 3132 |
}, {
|
| 3133 |
.name = "net",
|
| 3134 |
.type = QEMU_OPT_STRING, |
| 3135 |
.help = "IP address and optional netmask",
|
| 3136 |
}, {
|
| 3137 |
.name = "host",
|
| 3138 |
.type = QEMU_OPT_STRING, |
| 3139 |
.help = "guest-visible address of the host",
|
| 3140 |
}, {
|
| 3141 |
.name = "tftp",
|
| 3142 |
.type = QEMU_OPT_STRING, |
| 3143 |
.help = "root directory of the built-in TFTP server",
|
| 3144 |
}, {
|
| 3145 |
.name = "bootfile",
|
| 3146 |
.type = QEMU_OPT_STRING, |
| 3147 |
.help = "BOOTP filename, for use with tftp=",
|
| 3148 |
}, {
|
| 3149 |
.name = "dhcpstart",
|
| 3150 |
.type = QEMU_OPT_STRING, |
| 3151 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
| 3152 |
}, {
|
| 3153 |
.name = "dns",
|
| 3154 |
.type = QEMU_OPT_STRING, |
| 3155 |
.help = "guest-visible address of the virtual nameserver",
|
| 3156 |
}, {
|
| 3157 |
.name = "smb",
|
| 3158 |
.type = QEMU_OPT_STRING, |
| 3159 |
.help = "root directory of the built-in SMB server",
|
| 3160 |
}, {
|
| 3161 |
.name = "smbserver",
|
| 3162 |
.type = QEMU_OPT_STRING, |
| 3163 |
.help = "IP address of the built-in SMB server",
|
| 3164 |
}, {
|
| 3165 |
.name = "hostfwd",
|
| 3166 |
.type = QEMU_OPT_STRING, |
| 3167 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
| 3168 |
}, {
|
| 3169 |
.name = "guestfwd",
|
| 3170 |
.type = QEMU_OPT_STRING, |
| 3171 |
.help = "IP address and port to forward guest TCP connections",
|
| 3172 |
}, |
| 3173 |
{ /* end of list */ }
|
| 3174 |
}, |
| 3175 |
#endif
|
| 3176 |
#ifdef _WIN32
|
| 3177 |
}, {
|
| 3178 |
.type = "tap",
|
| 3179 |
.init = net_init_tap_win32, |
| 3180 |
.desc = {
|
| 3181 |
NET_COMMON_PARAMS_DESC, |
| 3182 |
{
|
| 3183 |
.name = "ifname",
|
| 3184 |
.type = QEMU_OPT_STRING, |
| 3185 |
.help = "interface name",
|
| 3186 |
}, |
| 3187 |
{ /* end of list */ }
|
| 3188 |
}, |
| 3189 |
#elif !defined(_AIX)
|
| 3190 |
}, {
|
| 3191 |
.type = "tap",
|
| 3192 |
.init = net_init_tap, |
| 3193 |
.desc = {
|
| 3194 |
NET_COMMON_PARAMS_DESC, |
| 3195 |
{
|
| 3196 |
.name = "fd",
|
| 3197 |
.type = QEMU_OPT_STRING, |
| 3198 |
.help = "file descriptor of an already opened tap",
|
| 3199 |
}, {
|
| 3200 |
.name = "ifname",
|
| 3201 |
.type = QEMU_OPT_STRING, |
| 3202 |
.help = "interface name",
|
| 3203 |
}, {
|
| 3204 |
.name = "script",
|
| 3205 |
.type = QEMU_OPT_STRING, |
| 3206 |
.help = "script to initialize the interface",
|
| 3207 |
}, {
|
| 3208 |
.name = "downscript",
|
| 3209 |
.type = QEMU_OPT_STRING, |
| 3210 |
.help = "script to shut down the interface",
|
| 3211 |
}, {
|
| 3212 |
.name = "sndbuf",
|
| 3213 |
.type = QEMU_OPT_SIZE, |
| 3214 |
.help = "send buffer limit"
|
| 3215 |
}, {
|
| 3216 |
.name = "vnet_hdr",
|
| 3217 |
.type = QEMU_OPT_BOOL, |
| 3218 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
| 3219 |
}, |
| 3220 |
{ /* end of list */ }
|
| 3221 |
}, |
| 3222 |
#endif
|
| 3223 |
}, {
|
| 3224 |
.type = "socket",
|
| 3225 |
.init = net_init_socket, |
| 3226 |
.desc = {
|
| 3227 |
NET_COMMON_PARAMS_DESC, |
| 3228 |
{
|
| 3229 |
.name = "fd",
|
| 3230 |
.type = QEMU_OPT_STRING, |
| 3231 |
.help = "file descriptor of an already opened socket",
|
| 3232 |
}, {
|
| 3233 |
.name = "listen",
|
| 3234 |
.type = QEMU_OPT_STRING, |
| 3235 |
.help = "port number, and optional hostname, to listen on",
|
| 3236 |
}, {
|
| 3237 |
.name = "connect",
|
| 3238 |
.type = QEMU_OPT_STRING, |
| 3239 |
.help = "port number, and optional hostname, to connect to",
|
| 3240 |
}, {
|
| 3241 |
.name = "mcast",
|
| 3242 |
.type = QEMU_OPT_STRING, |
| 3243 |
.help = "UDP multicast address and port number",
|
| 3244 |
}, |
| 3245 |
{ /* end of list */ }
|
| 3246 |
}, |
| 3247 |
#ifdef CONFIG_VDE
|
| 3248 |
}, {
|
| 3249 |
.type = "vde",
|
| 3250 |
.init = net_init_vde, |
| 3251 |
.desc = {
|
| 3252 |
NET_COMMON_PARAMS_DESC, |
| 3253 |
{
|
| 3254 |
.name = "sock",
|
| 3255 |
.type = QEMU_OPT_STRING, |
| 3256 |
.help = "socket path",
|
| 3257 |
}, {
|
| 3258 |
.name = "port",
|
| 3259 |
.type = QEMU_OPT_NUMBER, |
| 3260 |
.help = "port number",
|
| 3261 |
}, {
|
| 3262 |
.name = "group",
|
| 3263 |
.type = QEMU_OPT_STRING, |
| 3264 |
.help = "group owner of socket",
|
| 3265 |
}, {
|
| 3266 |
.name = "mode",
|
| 3267 |
.type = QEMU_OPT_NUMBER, |
| 3268 |
.help = "permissions for socket",
|
| 3269 |
}, |
| 3270 |
{ /* end of list */ }
|
| 3271 |
}, |
| 3272 |
#endif
|
| 3273 |
}, {
|
| 3274 |
.type = "dump",
|
| 3275 |
.init = net_init_dump, |
| 3276 |
.desc = {
|
| 3277 |
NET_COMMON_PARAMS_DESC, |
| 3278 |
{
|
| 3279 |
.name = "len",
|
| 3280 |
.type = QEMU_OPT_SIZE, |
| 3281 |
.help = "per-packet size limit (64k default)",
|
| 3282 |
}, {
|
| 3283 |
.name = "file",
|
| 3284 |
.type = QEMU_OPT_STRING, |
| 3285 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
| 3286 |
}, |
| 3287 |
{ /* end of list */ }
|
| 3288 |
}, |
| 3289 |
}, |
| 3290 |
{ /* end of list */ }
|
| 3291 |
}; |
| 3292 |
|
| 3293 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
| 3294 |
{
|
| 3295 |
const char *name; |
| 3296 |
const char *type; |
| 3297 |
int i;
|
| 3298 |
|
| 3299 |
type = qemu_opt_get(opts, "type");
|
| 3300 |
if (!type) {
|
| 3301 |
qemu_error("No type specified for -net\n");
|
| 3302 |
return -1; |
| 3303 |
} |
| 3304 |
|
| 3305 |
if (is_netdev) {
|
| 3306 |
if (strcmp(type, "tap") != 0 && |
| 3307 |
#ifdef CONFIG_SLIRP
|
| 3308 |
strcmp(type, "user") != 0 && |
| 3309 |
#endif
|
| 3310 |
#ifdef CONFIG_VDE
|
| 3311 |
strcmp(type, "vde") != 0 && |
| 3312 |
#endif
|
| 3313 |
strcmp(type, "socket") != 0) { |
| 3314 |
qemu_error("The '%s' network backend type is not valid with -netdev\n",
|
| 3315 |
type); |
| 3316 |
return -1; |
| 3317 |
} |
| 3318 |
|
| 3319 |
if (qemu_opt_get(opts, "vlan")) { |
| 3320 |
qemu_error("The 'vlan' parameter is not valid with -netdev\n");
|
| 3321 |
return -1; |
| 3322 |
} |
| 3323 |
if (qemu_opt_get(opts, "name")) { |
| 3324 |
qemu_error("The 'name' parameter is not valid with -netdev\n");
|
| 3325 |
return -1; |
| 3326 |
} |
| 3327 |
if (!qemu_opts_id(opts)) {
|
| 3328 |
qemu_error("The id= parameter is required with -netdev\n");
|
| 3329 |
return -1; |
| 3330 |
} |
| 3331 |
} |
| 3332 |
|
| 3333 |
name = qemu_opts_id(opts); |
| 3334 |
if (!name) {
|
| 3335 |
name = qemu_opt_get(opts, "name");
|
| 3336 |
} |
| 3337 |
|
| 3338 |
for (i = 0; net_client_types[i].type != NULL; i++) { |
| 3339 |
if (!strcmp(net_client_types[i].type, type)) {
|
| 3340 |
VLANState *vlan = NULL;
|
| 3341 |
|
| 3342 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
| 3343 |
return -1; |
| 3344 |
} |
| 3345 |
|
| 3346 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
| 3347 |
* netdev= parameter. */
|
| 3348 |
if (!(is_netdev ||
|
| 3349 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
| 3350 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
| 3351 |
} |
| 3352 |
|
| 3353 |
if (net_client_types[i].init) {
|
| 3354 |
return net_client_types[i].init(opts, mon, name, vlan);
|
| 3355 |
} else {
|
| 3356 |
return 0; |
| 3357 |
} |
| 3358 |
} |
| 3359 |
} |
| 3360 |
|
| 3361 |
qemu_error("Invalid -net type '%s'\n", type);
|
| 3362 |
return -1; |
| 3363 |
} |
| 3364 |
|
| 3365 |
void net_client_uninit(NICInfo *nd)
|
| 3366 |
{
|
| 3367 |
if (nd->vlan) {
|
| 3368 |
nd->vlan->nb_guest_devs--; |
| 3369 |
} |
| 3370 |
nb_nics--; |
| 3371 |
|
| 3372 |
qemu_free(nd->model); |
| 3373 |
qemu_free(nd->name); |
| 3374 |
qemu_free(nd->devaddr); |
| 3375 |
|
| 3376 |
nd->used = 0;
|
| 3377 |
} |
| 3378 |
|
| 3379 |
static int net_host_check_device(const char *device) |
| 3380 |
{
|
| 3381 |
int i;
|
| 3382 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
| 3383 |
#ifdef CONFIG_SLIRP
|
| 3384 |
,"user"
|
| 3385 |
#endif
|
| 3386 |
#ifdef CONFIG_VDE
|
| 3387 |
,"vde"
|
| 3388 |
#endif
|
| 3389 |
}; |
| 3390 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
| 3391 |
if (!strncmp(valid_param_list[i], device,
|
| 3392 |
strlen(valid_param_list[i]))) |
| 3393 |
return 1; |
| 3394 |
} |
| 3395 |
|
| 3396 |
return 0; |
| 3397 |
} |
| 3398 |
|
| 3399 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
| 3400 |
{
|
| 3401 |
const char *device = qdict_get_str(qdict, "device"); |
| 3402 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
| 3403 |
QemuOpts *opts; |
| 3404 |
|
| 3405 |
if (!net_host_check_device(device)) {
|
| 3406 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 3407 |
return;
|
| 3408 |
} |
| 3409 |
|
| 3410 |
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
| 3411 |
if (!opts) {
|
| 3412 |
monitor_printf(mon, "parsing network options '%s' failed\n",
|
| 3413 |
opts_str ? opts_str : "");
|
| 3414 |
return;
|
| 3415 |
} |
| 3416 |
|
| 3417 |
qemu_opt_set(opts, "type", device);
|
| 3418 |
|
| 3419 |
if (net_client_init(mon, opts, 0) < 0) { |
| 3420 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
| 3421 |
} |
| 3422 |
} |
| 3423 |
|
| 3424 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
| 3425 |
{
|
| 3426 |
VLANClientState *vc; |
| 3427 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
| 3428 |
const char *device = qdict_get_str(qdict, "device"); |
| 3429 |
|
| 3430 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
| 3431 |
if (!vc) {
|
| 3432 |
return;
|
| 3433 |
} |
| 3434 |
if (!net_host_check_device(vc->model)) {
|
| 3435 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 3436 |
return;
|
| 3437 |
} |
| 3438 |
qemu_del_vlan_client(vc); |
| 3439 |
} |
| 3440 |
|
| 3441 |
void net_set_boot_mask(int net_boot_mask) |
| 3442 |
{
|
| 3443 |
int i;
|
| 3444 |
|
| 3445 |
/* Only the first four NICs may be bootable */
|
| 3446 |
net_boot_mask = net_boot_mask & 0xF;
|
| 3447 |
|
| 3448 |
for (i = 0; i < nb_nics; i++) { |
| 3449 |
if (net_boot_mask & (1 << i)) { |
| 3450 |
nd_table[i].bootable = 1;
|
| 3451 |
net_boot_mask &= ~(1 << i);
|
| 3452 |
} |
| 3453 |
} |
| 3454 |
|
| 3455 |
if (net_boot_mask) {
|
| 3456 |
fprintf(stderr, "Cannot boot from non-existent NIC\n");
|
| 3457 |
exit(1);
|
| 3458 |
} |
| 3459 |
} |
| 3460 |
|
| 3461 |
void do_info_network(Monitor *mon)
|
| 3462 |
{
|
| 3463 |
VLANState *vlan; |
| 3464 |
|
| 3465 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 3466 |
VLANClientState *vc; |
| 3467 |
|
| 3468 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
| 3469 |
|
| 3470 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 3471 |
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
| 3472 |
} |
| 3473 |
} |
| 3474 |
} |
| 3475 |
|
| 3476 |
void do_set_link(Monitor *mon, const QDict *qdict) |
| 3477 |
{
|
| 3478 |
VLANState *vlan; |
| 3479 |
VLANClientState *vc = NULL;
|
| 3480 |
const char *name = qdict_get_str(qdict, "name"); |
| 3481 |
const char *up_or_down = qdict_get_str(qdict, "up_or_down"); |
| 3482 |
|
| 3483 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 3484 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 3485 |
if (strcmp(vc->name, name) == 0) { |
| 3486 |
goto done;
|
| 3487 |
} |
| 3488 |
} |
| 3489 |
} |
| 3490 |
done:
|
| 3491 |
|
| 3492 |
if (!vc) {
|
| 3493 |
monitor_printf(mon, "could not find network device '%s'\n", name);
|
| 3494 |
return;
|
| 3495 |
} |
| 3496 |
|
| 3497 |
if (strcmp(up_or_down, "up") == 0) |
| 3498 |
vc->link_down = 0;
|
| 3499 |
else if (strcmp(up_or_down, "down") == 0) |
| 3500 |
vc->link_down = 1;
|
| 3501 |
else
|
| 3502 |
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
| 3503 |
"valid\n", up_or_down);
|
| 3504 |
|
| 3505 |
if (vc->link_status_changed)
|
| 3506 |
vc->link_status_changed(vc); |
| 3507 |
} |
| 3508 |
|
| 3509 |
void net_cleanup(void) |
| 3510 |
{
|
| 3511 |
VLANState *vlan; |
| 3512 |
VLANClientState *vc, *next_vc; |
| 3513 |
|
| 3514 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 3515 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
| 3516 |
qemu_del_vlan_client(vc); |
| 3517 |
} |
| 3518 |
} |
| 3519 |
|
| 3520 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
| 3521 |
qemu_del_vlan_client(vc); |
| 3522 |
} |
| 3523 |
} |
| 3524 |
|
| 3525 |
static void net_check_clients(void) |
| 3526 |
{
|
| 3527 |
VLANState *vlan; |
| 3528 |
|
| 3529 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 3530 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
| 3531 |
continue;
|
| 3532 |
if (vlan->nb_guest_devs == 0) |
| 3533 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
| 3534 |
if (vlan->nb_host_devs == 0) |
| 3535 |
fprintf(stderr, |
| 3536 |
"Warning: vlan %d is not connected to host network\n",
|
| 3537 |
vlan->id); |
| 3538 |
} |
| 3539 |
} |
| 3540 |
|
| 3541 |
static int net_init_client(QemuOpts *opts, void *dummy) |
| 3542 |
{
|
| 3543 |
if (net_client_init(NULL, opts, 0) < 0) |
| 3544 |
return -1; |
| 3545 |
return 0; |
| 3546 |
} |
| 3547 |
|
| 3548 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
| 3549 |
{
|
| 3550 |
return net_client_init(NULL, opts, 1); |
| 3551 |
} |
| 3552 |
|
| 3553 |
int net_init_clients(void) |
| 3554 |
{
|
| 3555 |
if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
|
| 3556 |
/* if no clients, we use a default config */
|
| 3557 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); |
| 3558 |
#ifdef CONFIG_SLIRP
|
| 3559 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); |
| 3560 |
#endif
|
| 3561 |
} |
| 3562 |
|
| 3563 |
QTAILQ_INIT(&vlans); |
| 3564 |
QTAILQ_INIT(&non_vlan_clients); |
| 3565 |
|
| 3566 |
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) |
| 3567 |
return -1; |
| 3568 |
|
| 3569 |
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { |
| 3570 |
return -1; |
| 3571 |
} |
| 3572 |
|
| 3573 |
net_check_clients(); |
| 3574 |
|
| 3575 |
return 0; |
| 3576 |
} |
| 3577 |
|
| 3578 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
| 3579 |
{
|
| 3580 |
#if defined(CONFIG_SLIRP)
|
| 3581 |
/* handle legacy -net channel,port:chr */
|
| 3582 |
if (!strcmp(opts_list->name, "net") && |
| 3583 |
!strncmp(optarg, "channel,", strlen("channel,"))) { |
| 3584 |
int ret;
|
| 3585 |
|
| 3586 |
optarg += strlen("channel,");
|
| 3587 |
|
| 3588 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 3589 |
struct slirp_config_str *config;
|
| 3590 |
|
| 3591 |
config = qemu_malloc(sizeof(*config));
|
| 3592 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
| 3593 |
config->flags = SLIRP_CFG_LEGACY; |
| 3594 |
config->next = slirp_configs; |
| 3595 |
slirp_configs = config; |
| 3596 |
ret = 0;
|
| 3597 |
} else {
|
| 3598 |
ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
| 3599 |
} |
| 3600 |
|
| 3601 |
return ret;
|
| 3602 |
} |
| 3603 |
#endif
|
| 3604 |
if (!qemu_opts_parse(opts_list, optarg, "type")) { |
| 3605 |
return -1; |
| 3606 |
} |
| 3607 |
|
| 3608 |
return 0; |
| 3609 |
} |