1
by Serge Hallyn
Import upstream version 0.15.0+noroms |
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/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "net.h" |
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26 |
#include "config-host.h" |
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27 |
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28 |
#include "net/tap.h" |
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#include "net/socket.h" |
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#include "net/dump.h" |
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#include "net/slirp.h" |
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#include "net/vde.h" |
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#include "net/util.h" |
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#include "monitor.h" |
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#include "qemu-common.h" |
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#include "qemu_socket.h" |
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#include "hw/qdev.h" |
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#include "iov.h" |
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39 |
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40 |
static QTAILQ_HEAD(, VLANState) vlans; |
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41 |
static QTAILQ_HEAD(, VLANClientState) non_vlan_clients; |
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42 |
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43 |
int default_net = 1; |
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44 |
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45 |
/***********************************************************/
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/* network device redirectors */
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47 |
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48 |
#if defined(DEBUG_NET)
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static void hex_dump(FILE *f, const uint8_t *buf, int size) |
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50 |
{
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51 |
int len, i, j, c; |
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52 |
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53 |
for(i=0;i<size;i+=16) { |
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54 |
len = size - i; |
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55 |
if (len > 16) |
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56 |
len = 16; |
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57 |
fprintf(f, "%08x ", i); |
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58 |
for(j=0;j<16;j++) { |
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59 |
if (j < len) |
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60 |
fprintf(f, " %02x", buf[i+j]); |
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61 |
else
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62 |
fprintf(f, " "); |
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63 |
}
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64 |
fprintf(f, " "); |
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65 |
for(j=0;j<len;j++) { |
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c = buf[i+j]; |
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67 |
if (c < ' ' || c > '~') |
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68 |
c = '.'; |
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fprintf(f, "%c", c); |
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70 |
}
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71 |
fprintf(f, "\n"); |
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72 |
}
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73 |
}
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74 |
#endif
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75 |
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76 |
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
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77 |
{
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78 |
const char *p, *p1; |
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int len; |
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p = *pp; |
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p1 = strchr(p, sep); |
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82 |
if (!p1) |
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83 |
return -1; |
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84 |
len = p1 - p; |
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85 |
p1++; |
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86 |
if (buf_size > 0) { |
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87 |
if (len > buf_size - 1) |
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88 |
len = buf_size - 1; |
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89 |
memcpy(buf, p, len); |
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buf[len] = '\0'; |
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91 |
}
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92 |
*pp = p1; |
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93 |
return 0; |
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94 |
}
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95 |
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96 |
int parse_host_port(struct sockaddr_in *saddr, const char *str) |
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{
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char buf[512]; |
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struct hostent *he; |
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const char *p, *r; |
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int port; |
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102 |
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103 |
p = str; |
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104 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
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return -1; |
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106 |
saddr->sin_family = AF_INET; |
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107 |
if (buf[0] == '\0') { |
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108 |
saddr->sin_addr.s_addr = 0; |
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109 |
} else { |
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110 |
if (qemu_isdigit(buf[0])) { |
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111 |
if (!inet_aton(buf, &saddr->sin_addr)) |
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return -1; |
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113 |
} else { |
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114 |
if ((he = gethostbyname(buf)) == NULL) |
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115 |
return - 1; |
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116 |
saddr->sin_addr = *(struct in_addr *)he->h_addr; |
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117 |
}
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118 |
}
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119 |
port = strtol(p, (char **)&r, 0); |
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120 |
if (r == p) |
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121 |
return -1; |
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122 |
saddr->sin_port = htons(port); |
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123 |
return 0; |
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124 |
}
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125 |
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126 |
void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
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127 |
{
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snprintf(vc->info_str, sizeof(vc->info_str), |
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
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vc->model, |
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macaddr[0], macaddr[1], macaddr[2], |
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macaddr[3], macaddr[4], macaddr[5]); |
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}
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135 |
void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
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{
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static int index = 0; |
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static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
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139 |
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140 |
if (memcmp(macaddr, &zero, sizeof(zero)) != 0) |
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return; |
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macaddr->a[0] = 0x52; |
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macaddr->a[1] = 0x54; |
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macaddr->a[2] = 0x00; |
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macaddr->a[3] = 0x12; |
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macaddr->a[4] = 0x34; |
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macaddr->a[5] = 0x56 + index++; |
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}
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static char *assign_name(VLANClientState *vc1, const char *model) |
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{
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VLANState *vlan; |
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char buf[256]; |
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int id = 0; |
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156 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
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VLANClientState *vc; |
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QTAILQ_FOREACH(vc, &vlan->clients, next) { |
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if (vc != vc1 && strcmp(vc->model, model) == 0) { |
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id++; |
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}
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}
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}
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snprintf(buf, sizeof(buf), "%s.%d", model, id); |
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return qemu_strdup(buf); |
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}
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static ssize_t qemu_deliver_packet(VLANClientState *sender, |
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unsigned flags, |
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const uint8_t *data, |
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size_t size, |
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void *opaque); |
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static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, |
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unsigned flags, |
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const struct iovec *iov, |
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int iovcnt, |
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void *opaque); |
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181 |
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182 |
VLANClientState *qemu_new_net_client(NetClientInfo *info, |
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VLANState *vlan, |
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VLANClientState *peer, |
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const char *model, |
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const char *name) |
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187 |
{
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VLANClientState *vc; |
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189 |
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assert(info->size >= sizeof(VLANClientState)); |
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vc = qemu_mallocz(info->size); |
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vc->info = info; |
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vc->model = qemu_strdup(model); |
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if (name) { |
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vc->name = qemu_strdup(name); |
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} else { |
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vc->name = assign_name(vc, model); |
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200 |
}
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202 |
if (vlan) { |
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203 |
assert(!peer); |
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vc->vlan = vlan; |
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QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
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} else { |
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207 |
if (peer) { |
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assert(!peer->peer); |
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vc->peer = peer; |
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peer->peer = vc; |
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}
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QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
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213 |
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214 |
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
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qemu_deliver_packet_iov, |
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vc); |
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}
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218 |
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219 |
return vc; |
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}
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221 |
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222 |
NICState *qemu_new_nic(NetClientInfo *info, |
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NICConf *conf, |
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224 |
const char *model, |
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const char *name, |
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226 |
void *opaque) |
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227 |
{
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VLANClientState *nc; |
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NICState *nic; |
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230 |
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231 |
assert(info->type == NET_CLIENT_TYPE_NIC); |
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assert(info->size >= sizeof(NICState)); |
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233 |
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nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); |
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235 |
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nic = DO_UPCAST(NICState, nc, nc); |
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nic->conf = conf; |
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nic->opaque = opaque; |
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240 |
return nic; |
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}
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243 |
static void qemu_cleanup_vlan_client(VLANClientState *vc) |
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{
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245 |
if (vc->vlan) { |
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QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
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} else { |
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248 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
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249 |
}
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250 |
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251 |
if (vc->info->cleanup) { |
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vc->info->cleanup(vc); |
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253 |
}
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}
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255 |
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256 |
static void qemu_free_vlan_client(VLANClientState *vc) |
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{
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if (!vc->vlan) { |
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259 |
if (vc->send_queue) { |
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qemu_del_net_queue(vc->send_queue); |
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}
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262 |
if (vc->peer) { |
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vc->peer->peer = NULL; |
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}
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}
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qemu_free(vc->name); |
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qemu_free(vc->model); |
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qemu_free(vc); |
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}
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270 |
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271 |
void qemu_del_vlan_client(VLANClientState *vc) |
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272 |
{
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273 |
/* If there is a peer NIC, delete and cleanup client, but do not free. */
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274 |
if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) { |
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275 |
NICState *nic = DO_UPCAST(NICState, nc, vc->peer); |
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276 |
if (nic->peer_deleted) { |
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277 |
return; |
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278 |
}
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279 |
nic->peer_deleted = true; |
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280 |
/* Let NIC know peer is gone. */
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281 |
vc->peer->link_down = true; |
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282 |
if (vc->peer->info->link_status_changed) { |
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283 |
vc->peer->info->link_status_changed(vc->peer); |
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284 |
}
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285 |
qemu_cleanup_vlan_client(vc); |
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286 |
return; |
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287 |
}
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288 |
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289 |
/* If this is a peer NIC and peer has already been deleted, free it now. */
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290 |
if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) { |
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291 |
NICState *nic = DO_UPCAST(NICState, nc, vc); |
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292 |
if (nic->peer_deleted) { |
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293 |
qemu_free_vlan_client(vc->peer); |
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294 |
}
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295 |
}
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296 |
||
297 |
qemu_cleanup_vlan_client(vc); |
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298 |
qemu_free_vlan_client(vc); |
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299 |
}
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300 |
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301 |
VLANClientState * |
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302 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, |
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303 |
const char *client_str) |
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304 |
{
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305 |
VLANState *vlan; |
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306 |
VLANClientState *vc; |
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307 |
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308 |
vlan = qemu_find_vlan(vlan_id, 0); |
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309 |
if (!vlan) { |
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310 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id); |
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311 |
return NULL; |
|
312 |
}
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313 |
||
314 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
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315 |
if (!strcmp(vc->name, client_str)) { |
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316 |
break; |
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317 |
}
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318 |
}
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319 |
if (!vc) { |
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320 |
monitor_printf(mon, "can't find device %s on VLAN %d\n", |
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321 |
client_str, vlan_id); |
|
322 |
}
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323 |
||
324 |
return vc; |
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325 |
}
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326 |
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327 |
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
|
328 |
{
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329 |
VLANClientState *nc; |
|
330 |
VLANState *vlan; |
|
331 |
||
332 |
QTAILQ_FOREACH(nc, &non_vlan_clients, next) { |
|
333 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) { |
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334 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
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335 |
}
|
|
336 |
}
|
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337 |
||
338 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
339 |
QTAILQ_FOREACH(nc, &vlan->clients, next) { |
|
340 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) { |
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341 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
|
342 |
}
|
|
343 |
}
|
|
344 |
}
|
|
345 |
}
|
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346 |
||
347 |
int qemu_can_send_packet(VLANClientState *sender) |
|
348 |
{
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|
349 |
VLANState *vlan = sender->vlan; |
|
350 |
VLANClientState *vc; |
|
351 |
||
352 |
if (sender->peer) { |
|
353 |
if (sender->peer->receive_disabled) { |
|
354 |
return 0; |
|
355 |
} else if (sender->peer->info->can_receive && |
|
356 |
!sender->peer->info->can_receive(sender->peer)) { |
|
357 |
return 0; |
|
358 |
} else { |
|
359 |
return 1; |
|
360 |
}
|
|
361 |
}
|
|
362 |
||
363 |
if (!sender->vlan) { |
|
364 |
return 1; |
|
365 |
}
|
|
366 |
||
367 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
368 |
if (vc == sender) { |
|
369 |
continue; |
|
370 |
}
|
|
371 |
||
372 |
/* no can_receive() handler, they can always receive */
|
|
373 |
if (vc->info->can_receive && !vc->info->can_receive(vc)) { |
|
374 |
return 0; |
|
375 |
}
|
|
376 |
}
|
|
377 |
return 1; |
|
378 |
}
|
|
379 |
||
380 |
static ssize_t qemu_deliver_packet(VLANClientState *sender, |
|
381 |
unsigned flags, |
|
382 |
const uint8_t *data, |
|
383 |
size_t size, |
|
384 |
void *opaque) |
|
385 |
{
|
|
386 |
VLANClientState *vc = opaque; |
|
387 |
ssize_t ret; |
|
388 |
||
389 |
if (vc->link_down) { |
|
390 |
return size; |
|
391 |
}
|
|
392 |
||
393 |
if (vc->receive_disabled) { |
|
394 |
return 0; |
|
395 |
}
|
|
396 |
||
397 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { |
|
398 |
ret = vc->info->receive_raw(vc, data, size); |
|
399 |
} else { |
|
400 |
ret = vc->info->receive(vc, data, size); |
|
401 |
}
|
|
402 |
||
403 |
if (ret == 0) { |
|
404 |
vc->receive_disabled = 1; |
|
405 |
};
|
|
406 |
||
407 |
return ret; |
|
408 |
}
|
|
409 |
||
410 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender, |
|
411 |
unsigned flags, |
|
412 |
const uint8_t *buf, |
|
413 |
size_t size, |
|
414 |
void *opaque) |
|
415 |
{
|
|
416 |
VLANState *vlan = opaque; |
|
417 |
VLANClientState *vc; |
|
418 |
ssize_t ret = -1; |
|
419 |
||
420 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
421 |
ssize_t len; |
|
422 |
||
423 |
if (vc == sender) { |
|
424 |
continue; |
|
425 |
}
|
|
426 |
||
427 |
if (vc->link_down) { |
|
428 |
ret = size; |
|
429 |
continue; |
|
430 |
}
|
|
431 |
||
432 |
if (vc->receive_disabled) { |
|
433 |
ret = 0; |
|
434 |
continue; |
|
435 |
}
|
|
436 |
||
437 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { |
|
438 |
len = vc->info->receive_raw(vc, buf, size); |
|
439 |
} else { |
|
440 |
len = vc->info->receive(vc, buf, size); |
|
441 |
}
|
|
442 |
||
443 |
if (len == 0) { |
|
444 |
vc->receive_disabled = 1; |
|
445 |
}
|
|
446 |
||
447 |
ret = (ret >= 0) ? ret : len; |
|
448 |
||
449 |
}
|
|
450 |
||
451 |
return ret; |
|
452 |
}
|
|
453 |
||
454 |
void qemu_purge_queued_packets(VLANClientState *vc) |
|
455 |
{
|
|
456 |
NetQueue *queue; |
|
457 |
||
458 |
if (!vc->peer && !vc->vlan) { |
|
459 |
return; |
|
460 |
}
|
|
461 |
||
462 |
if (vc->peer) { |
|
463 |
queue = vc->peer->send_queue; |
|
464 |
} else { |
|
465 |
queue = vc->vlan->send_queue; |
|
466 |
}
|
|
467 |
||
468 |
qemu_net_queue_purge(queue, vc); |
|
469 |
}
|
|
470 |
||
471 |
void qemu_flush_queued_packets(VLANClientState *vc) |
|
472 |
{
|
|
473 |
NetQueue *queue; |
|
474 |
||
475 |
vc->receive_disabled = 0; |
|
476 |
||
477 |
if (vc->vlan) { |
|
478 |
queue = vc->vlan->send_queue; |
|
479 |
} else { |
|
480 |
queue = vc->send_queue; |
|
481 |
}
|
|
482 |
||
483 |
qemu_net_queue_flush(queue); |
|
484 |
}
|
|
485 |
||
486 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender, |
|
487 |
unsigned flags, |
|
488 |
const uint8_t *buf, int size, |
|
489 |
NetPacketSent *sent_cb) |
|
490 |
{
|
|
491 |
NetQueue *queue; |
|
492 |
||
493 |
#ifdef DEBUG_NET
|
|
494 |
printf("qemu_send_packet_async:\n"); |
|
495 |
hex_dump(stdout, buf, size); |
|
496 |
#endif
|
|
497 |
||
498 |
if (sender->link_down || (!sender->peer && !sender->vlan)) { |
|
499 |
return size; |
|
500 |
}
|
|
501 |
||
502 |
if (sender->peer) { |
|
503 |
queue = sender->peer->send_queue; |
|
504 |
} else { |
|
505 |
queue = sender->vlan->send_queue; |
|
506 |
}
|
|
507 |
||
508 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
|
509 |
}
|
|
510 |
||
511 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
|
512 |
const uint8_t *buf, int size, |
|
513 |
NetPacketSent *sent_cb) |
|
514 |
{
|
|
515 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, |
|
516 |
buf, size, sent_cb); |
|
517 |
}
|
|
518 |
||
519 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
|
520 |
{
|
|
521 |
qemu_send_packet_async(vc, buf, size, NULL); |
|
522 |
}
|
|
523 |
||
524 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
|
525 |
{
|
|
526 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW, |
|
527 |
buf, size, NULL); |
|
528 |
}
|
|
529 |
||
530 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
|
531 |
int iovcnt) |
|
532 |
{
|
|
533 |
uint8_t buffer[4096]; |
|
534 |
size_t offset; |
|
535 |
||
536 |
offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer)); |
|
537 |
||
538 |
return vc->info->receive(vc, buffer, offset); |
|
539 |
}
|
|
540 |
||
541 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, |
|
542 |
unsigned flags, |
|
543 |
const struct iovec *iov, |
|
544 |
int iovcnt, |
|
545 |
void *opaque) |
|
546 |
{
|
|
547 |
VLANClientState *vc = opaque; |
|
548 |
||
549 |
if (vc->link_down) { |
|
550 |
return iov_size(iov, iovcnt); |
|
551 |
}
|
|
552 |
||
553 |
if (vc->info->receive_iov) { |
|
554 |
return vc->info->receive_iov(vc, iov, iovcnt); |
|
555 |
} else { |
|
556 |
return vc_sendv_compat(vc, iov, iovcnt); |
|
557 |
}
|
|
558 |
}
|
|
559 |
||
560 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender, |
|
561 |
unsigned flags, |
|
562 |
const struct iovec *iov, |
|
563 |
int iovcnt, |
|
564 |
void *opaque) |
|
565 |
{
|
|
566 |
VLANState *vlan = opaque; |
|
567 |
VLANClientState *vc; |
|
568 |
ssize_t ret = -1; |
|
569 |
||
570 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
571 |
ssize_t len; |
|
572 |
||
573 |
if (vc == sender) { |
|
574 |
continue; |
|
575 |
}
|
|
576 |
||
577 |
if (vc->link_down) { |
|
578 |
ret = iov_size(iov, iovcnt); |
|
579 |
continue; |
|
580 |
}
|
|
581 |
||
582 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
|
583 |
||
584 |
if (vc->info->receive_iov) { |
|
585 |
len = vc->info->receive_iov(vc, iov, iovcnt); |
|
586 |
} else { |
|
587 |
len = vc_sendv_compat(vc, iov, iovcnt); |
|
588 |
}
|
|
589 |
||
590 |
ret = (ret >= 0) ? ret : len; |
|
591 |
}
|
|
592 |
||
593 |
return ret; |
|
594 |
}
|
|
595 |
||
596 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
|
597 |
const struct iovec *iov, int iovcnt, |
|
598 |
NetPacketSent *sent_cb) |
|
599 |
{
|
|
600 |
NetQueue *queue; |
|
601 |
||
602 |
if (sender->link_down || (!sender->peer && !sender->vlan)) { |
|
603 |
return iov_size(iov, iovcnt); |
|
604 |
}
|
|
605 |
||
606 |
if (sender->peer) { |
|
607 |
queue = sender->peer->send_queue; |
|
608 |
} else { |
|
609 |
queue = sender->vlan->send_queue; |
|
610 |
}
|
|
611 |
||
612 |
return qemu_net_queue_send_iov(queue, sender, |
|
613 |
QEMU_NET_PACKET_FLAG_NONE, |
|
614 |
iov, iovcnt, sent_cb); |
|
615 |
}
|
|
616 |
||
617 |
ssize_t
|
|
618 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
|
619 |
{
|
|
620 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
|
621 |
}
|
|
622 |
||
623 |
/* find or alloc a new VLAN */
|
|
624 |
VLANState *qemu_find_vlan(int id, int allocate) |
|
625 |
{
|
|
626 |
VLANState *vlan; |
|
627 |
||
628 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
629 |
if (vlan->id == id) { |
|
630 |
return vlan; |
|
631 |
}
|
|
632 |
}
|
|
633 |
||
634 |
if (!allocate) { |
|
635 |
return NULL; |
|
636 |
}
|
|
637 |
||
638 |
vlan = qemu_mallocz(sizeof(VLANState)); |
|
639 |
vlan->id = id; |
|
640 |
QTAILQ_INIT(&vlan->clients); |
|
641 |
||
642 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
|
643 |
qemu_vlan_deliver_packet_iov, |
|
644 |
vlan); |
|
645 |
||
646 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
|
647 |
||
648 |
return vlan; |
|
649 |
}
|
|
650 |
||
651 |
VLANClientState *qemu_find_netdev(const char *id) |
|
652 |
{
|
|
653 |
VLANClientState *vc; |
|
654 |
||
655 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
|
656 |
if (!strcmp(vc->name, id)) { |
|
657 |
return vc; |
|
658 |
}
|
|
659 |
}
|
|
660 |
||
661 |
return NULL; |
|
662 |
}
|
|
663 |
||
664 |
static int nic_get_free_idx(void) |
|
665 |
{
|
|
666 |
int index; |
|
667 |
||
668 |
for (index = 0; index < MAX_NICS; index++) |
|
669 |
if (!nd_table[index].used) |
|
670 |
return index; |
|
671 |
return -1; |
|
672 |
}
|
|
673 |
||
674 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
|
675 |
{
|
|
676 |
int i; |
|
677 |
||
678 |
if (!arg || strcmp(arg, "?")) |
|
679 |
return 0; |
|
680 |
||
681 |
fprintf(stderr, "qemu: Supported NIC models: "); |
|
682 |
for (i = 0 ; models[i]; i++) |
|
683 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
|
684 |
return 1; |
|
685 |
}
|
|
686 |
||
687 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
|
688 |
{
|
|
689 |
const char *models[2]; |
|
690 |
||
691 |
models[0] = model; |
|
692 |
models[1] = NULL; |
|
693 |
||
694 |
if (qemu_show_nic_models(nd->model, models)) |
|
695 |
exit(0); |
|
696 |
if (qemu_find_nic_model(nd, models, model) < 0) |
|
697 |
exit(1); |
|
698 |
}
|
|
699 |
||
700 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
|
701 |
const char *default_model) |
|
702 |
{
|
|
703 |
int i; |
|
704 |
||
705 |
if (!nd->model) |
|
706 |
nd->model = qemu_strdup(default_model); |
|
707 |
||
708 |
for (i = 0 ; models[i]; i++) { |
|
709 |
if (strcmp(nd->model, models[i]) == 0) |
|
710 |
return i; |
|
711 |
}
|
|
712 |
||
713 |
error_report("Unsupported NIC model: %s", nd->model); |
|
714 |
return -1; |
|
715 |
}
|
|
716 |
||
717 |
int net_handle_fd_param(Monitor *mon, const char *param) |
|
718 |
{
|
|
719 |
int fd; |
|
720 |
||
721 |
if (!qemu_isdigit(param[0]) && mon) { |
|
722 |
||
723 |
fd = monitor_get_fd(mon, param); |
|
724 |
if (fd == -1) { |
|
725 |
error_report("No file descriptor named %s found", param); |
|
726 |
return -1; |
|
727 |
}
|
|
728 |
} else { |
|
729 |
char *endptr = NULL; |
|
730 |
||
731 |
fd = strtol(param, &endptr, 10); |
|
732 |
if (*endptr || (fd == 0 && param == endptr)) { |
|
733 |
return -1; |
|
734 |
}
|
|
735 |
}
|
|
736 |
||
737 |
return fd; |
|
738 |
}
|
|
739 |
||
740 |
static int net_init_nic(QemuOpts *opts, |
|
741 |
Monitor *mon, |
|
742 |
const char *name, |
|
743 |
VLANState *vlan) |
|
744 |
{
|
|
745 |
int idx; |
|
746 |
NICInfo *nd; |
|
747 |
const char *netdev; |
|
748 |
||
749 |
idx = nic_get_free_idx(); |
|
750 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
|
751 |
error_report("Too Many NICs"); |
|
752 |
return -1; |
|
753 |
}
|
|
754 |
||
755 |
nd = &nd_table[idx]; |
|
756 |
||
757 |
memset(nd, 0, sizeof(*nd)); |
|
758 |
||
759 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
|
760 |
nd->netdev = qemu_find_netdev(netdev); |
|
761 |
if (!nd->netdev) { |
|
762 |
error_report("netdev '%s' not found", netdev); |
|
763 |
return -1; |
|
764 |
}
|
|
765 |
} else { |
|
766 |
assert(vlan); |
|
767 |
nd->vlan = vlan; |
|
768 |
}
|
|
769 |
if (name) { |
|
770 |
nd->name = qemu_strdup(name); |
|
771 |
}
|
|
772 |
if (qemu_opt_get(opts, "model")) { |
|
773 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model")); |
|
774 |
}
|
|
775 |
if (qemu_opt_get(opts, "addr")) { |
|
776 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr")); |
|
777 |
}
|
|
778 |
||
779 |
if (qemu_opt_get(opts, "macaddr") && |
|
780 |
net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) { |
|
781 |
error_report("invalid syntax for ethernet address"); |
|
782 |
return -1; |
|
783 |
}
|
|
784 |
qemu_macaddr_default_if_unset(&nd->macaddr); |
|
785 |
||
786 |
nd->nvectors = qemu_opt_get_number(opts, "vectors", |
|
787 |
DEV_NVECTORS_UNSPECIFIED); |
|
788 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
|
789 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
|
790 |
error_report("invalid # of vectors: %d", nd->nvectors); |
|
791 |
return -1; |
|
792 |
}
|
|
793 |
||
794 |
nd->used = 1; |
|
795 |
nb_nics++; |
|
796 |
||
797 |
return idx; |
|
798 |
}
|
|
799 |
||
800 |
#define NET_COMMON_PARAMS_DESC \
|
|
801 |
{ \
|
|
802 |
.name = "type", \
|
|
803 |
.type = QEMU_OPT_STRING, \
|
|
804 |
.help = "net client type (nic, tap etc.)", \
|
|
805 |
}, { \
|
|
806 |
.name = "vlan", \
|
|
807 |
.type = QEMU_OPT_NUMBER, \
|
|
808 |
.help = "vlan number", \
|
|
809 |
}, { \
|
|
810 |
.name = "name", \
|
|
811 |
.type = QEMU_OPT_STRING, \
|
|
812 |
.help = "identifier for monitor commands", \
|
|
813 |
}
|
|
814 |
||
815 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
|
816 |
Monitor *mon, |
|
817 |
const char *name, |
|
818 |
VLANState *vlan); |
|
819 |
||
820 |
/* magic number, but compiler will warn if too small */
|
|
821 |
#define NET_MAX_DESC 20
|
|
822 |
||
823 |
static const struct { |
|
824 |
const char *type; |
|
825 |
net_client_init_func init; |
|
826 |
QemuOptDesc desc[NET_MAX_DESC]; |
|
827 |
} net_client_types[NET_CLIENT_TYPE_MAX] = { |
|
828 |
[NET_CLIENT_TYPE_NONE] = { |
|
829 |
.type = "none", |
|
830 |
.desc = { |
|
831 |
NET_COMMON_PARAMS_DESC, |
|
832 |
{ /* end of list */ } |
|
833 |
},
|
|
834 |
},
|
|
835 |
[NET_CLIENT_TYPE_NIC] = { |
|
836 |
.type = "nic", |
|
837 |
.init = net_init_nic, |
|
838 |
.desc = { |
|
839 |
NET_COMMON_PARAMS_DESC, |
|
840 |
{
|
|
841 |
.name = "netdev", |
|
842 |
.type = QEMU_OPT_STRING, |
|
843 |
.help = "id of -netdev to connect to", |
|
844 |
},
|
|
845 |
{
|
|
846 |
.name = "macaddr", |
|
847 |
.type = QEMU_OPT_STRING, |
|
848 |
.help = "MAC address", |
|
849 |
}, { |
|
850 |
.name = "model", |
|
851 |
.type = QEMU_OPT_STRING, |
|
852 |
.help = "device model (e1000, rtl8139, virtio etc.)", |
|
853 |
}, { |
|
854 |
.name = "addr", |
|
855 |
.type = QEMU_OPT_STRING, |
|
856 |
.help = "PCI device address", |
|
857 |
}, { |
|
858 |
.name = "vectors", |
|
859 |
.type = QEMU_OPT_NUMBER, |
|
860 |
.help = "number of MSI-x vectors, 0 to disable MSI-X", |
|
861 |
},
|
|
862 |
{ /* end of list */ } |
|
863 |
},
|
|
864 |
},
|
|
865 |
#ifdef CONFIG_SLIRP
|
|
866 |
[NET_CLIENT_TYPE_USER] = { |
|
867 |
.type = "user", |
|
868 |
.init = net_init_slirp, |
|
869 |
.desc = { |
|
870 |
NET_COMMON_PARAMS_DESC, |
|
871 |
{
|
|
872 |
.name = "hostname", |
|
873 |
.type = QEMU_OPT_STRING, |
|
874 |
.help = "client hostname reported by the builtin DHCP server", |
|
875 |
}, { |
|
876 |
.name = "restrict", |
|
877 |
.type = QEMU_OPT_STRING, |
|
878 |
.help = "isolate the guest from the host (y|yes|n|no)", |
|
879 |
}, { |
|
880 |
.name = "ip", |
|
881 |
.type = QEMU_OPT_STRING, |
|
882 |
.help = "legacy parameter, use net= instead", |
|
883 |
}, { |
|
884 |
.name = "net", |
|
885 |
.type = QEMU_OPT_STRING, |
|
886 |
.help = "IP address and optional netmask", |
|
887 |
}, { |
|
888 |
.name = "host", |
|
889 |
.type = QEMU_OPT_STRING, |
|
890 |
.help = "guest-visible address of the host", |
|
891 |
}, { |
|
892 |
.name = "tftp", |
|
893 |
.type = QEMU_OPT_STRING, |
|
894 |
.help = "root directory of the built-in TFTP server", |
|
895 |
}, { |
|
896 |
.name = "bootfile", |
|
897 |
.type = QEMU_OPT_STRING, |
|
898 |
.help = "BOOTP filename, for use with tftp=", |
|
899 |
}, { |
|
900 |
.name = "dhcpstart", |
|
901 |
.type = QEMU_OPT_STRING, |
|
902 |
.help = "the first of the 16 IPs the built-in DHCP server can assign", |
|
903 |
}, { |
|
904 |
.name = "dns", |
|
905 |
.type = QEMU_OPT_STRING, |
|
906 |
.help = "guest-visible address of the virtual nameserver", |
|
907 |
}, { |
|
908 |
.name = "smb", |
|
909 |
.type = QEMU_OPT_STRING, |
|
910 |
.help = "root directory of the built-in SMB server", |
|
911 |
}, { |
|
912 |
.name = "smbserver", |
|
913 |
.type = QEMU_OPT_STRING, |
|
914 |
.help = "IP address of the built-in SMB server", |
|
915 |
}, { |
|
916 |
.name = "hostfwd", |
|
917 |
.type = QEMU_OPT_STRING, |
|
918 |
.help = "guest port number to forward incoming TCP or UDP connections", |
|
919 |
}, { |
|
920 |
.name = "guestfwd", |
|
921 |
.type = QEMU_OPT_STRING, |
|
922 |
.help = "IP address and port to forward guest TCP connections", |
|
923 |
},
|
|
924 |
{ /* end of list */ } |
|
925 |
},
|
|
926 |
},
|
|
927 |
#endif
|
|
928 |
[NET_CLIENT_TYPE_TAP] = { |
|
929 |
.type = "tap", |
|
930 |
.init = net_init_tap, |
|
931 |
.desc = { |
|
932 |
NET_COMMON_PARAMS_DESC, |
|
933 |
{
|
|
934 |
.name = "ifname", |
|
935 |
.type = QEMU_OPT_STRING, |
|
936 |
.help = "interface name", |
|
937 |
},
|
|
938 |
#ifndef _WIN32
|
|
939 |
{
|
|
940 |
.name = "fd", |
|
941 |
.type = QEMU_OPT_STRING, |
|
942 |
.help = "file descriptor of an already opened tap", |
|
943 |
}, { |
|
944 |
.name = "script", |
|
945 |
.type = QEMU_OPT_STRING, |
|
946 |
.help = "script to initialize the interface", |
|
947 |
}, { |
|
948 |
.name = "downscript", |
|
949 |
.type = QEMU_OPT_STRING, |
|
950 |
.help = "script to shut down the interface", |
|
951 |
}, { |
|
952 |
.name = "sndbuf", |
|
953 |
.type = QEMU_OPT_SIZE, |
|
954 |
.help = "send buffer limit" |
|
955 |
}, { |
|
956 |
.name = "vnet_hdr", |
|
957 |
.type = QEMU_OPT_BOOL, |
|
958 |
.help = "enable the IFF_VNET_HDR flag on the tap interface" |
|
959 |
}, { |
|
960 |
.name = "vhost", |
|
961 |
.type = QEMU_OPT_BOOL, |
|
962 |
.help = "enable vhost-net network accelerator", |
|
963 |
}, { |
|
964 |
.name = "vhostfd", |
|
965 |
.type = QEMU_OPT_STRING, |
|
966 |
.help = "file descriptor of an already opened vhost net device", |
|
967 |
}, { |
|
968 |
.name = "vhostforce", |
|
969 |
.type = QEMU_OPT_BOOL, |
|
970 |
.help = "force vhost on for non-MSIX virtio guests", |
|
971 |
},
|
|
972 |
#endif /* _WIN32 */ |
|
973 |
{ /* end of list */ } |
|
974 |
},
|
|
975 |
},
|
|
976 |
[NET_CLIENT_TYPE_SOCKET] = { |
|
977 |
.type = "socket", |
|
978 |
.init = net_init_socket, |
|
979 |
.desc = { |
|
980 |
NET_COMMON_PARAMS_DESC, |
|
981 |
{
|
|
982 |
.name = "fd", |
|
983 |
.type = QEMU_OPT_STRING, |
|
984 |
.help = "file descriptor of an already opened socket", |
|
985 |
}, { |
|
986 |
.name = "listen", |
|
987 |
.type = QEMU_OPT_STRING, |
|
988 |
.help = "port number, and optional hostname, to listen on", |
|
989 |
}, { |
|
990 |
.name = "connect", |
|
991 |
.type = QEMU_OPT_STRING, |
|
992 |
.help = "port number, and optional hostname, to connect to", |
|
993 |
}, { |
|
994 |
.name = "mcast", |
|
995 |
.type = QEMU_OPT_STRING, |
|
996 |
.help = "UDP multicast address and port number", |
|
997 |
}, { |
|
998 |
.name = "localaddr", |
|
999 |
.type = QEMU_OPT_STRING, |
|
1000 |
.help = "source address for multicast packets", |
|
1001 |
},
|
|
1002 |
{ /* end of list */ } |
|
1003 |
},
|
|
1004 |
},
|
|
1005 |
#ifdef CONFIG_VDE
|
|
1006 |
[NET_CLIENT_TYPE_VDE] = { |
|
1007 |
.type = "vde", |
|
1008 |
.init = net_init_vde, |
|
1009 |
.desc = { |
|
1010 |
NET_COMMON_PARAMS_DESC, |
|
1011 |
{
|
|
1012 |
.name = "sock", |
|
1013 |
.type = QEMU_OPT_STRING, |
|
1014 |
.help = "socket path", |
|
1015 |
}, { |
|
1016 |
.name = "port", |
|
1017 |
.type = QEMU_OPT_NUMBER, |
|
1018 |
.help = "port number", |
|
1019 |
}, { |
|
1020 |
.name = "group", |
|
1021 |
.type = QEMU_OPT_STRING, |
|
1022 |
.help = "group owner of socket", |
|
1023 |
}, { |
|
1024 |
.name = "mode", |
|
1025 |
.type = QEMU_OPT_NUMBER, |
|
1026 |
.help = "permissions for socket", |
|
1027 |
},
|
|
1028 |
{ /* end of list */ } |
|
1029 |
},
|
|
1030 |
},
|
|
1031 |
#endif
|
|
1032 |
[NET_CLIENT_TYPE_DUMP] = { |
|
1033 |
.type = "dump", |
|
1034 |
.init = net_init_dump, |
|
1035 |
.desc = { |
|
1036 |
NET_COMMON_PARAMS_DESC, |
|
1037 |
{
|
|
1038 |
.name = "len", |
|
1039 |
.type = QEMU_OPT_SIZE, |
|
1040 |
.help = "per-packet size limit (64k default)", |
|
1041 |
}, { |
|
1042 |
.name = "file", |
|
1043 |
.type = QEMU_OPT_STRING, |
|
1044 |
.help = "dump file path (default is qemu-vlan0.pcap)", |
|
1045 |
},
|
|
1046 |
{ /* end of list */ } |
|
1047 |
},
|
|
1048 |
},
|
|
1049 |
};
|
|
1050 |
||
1051 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
|
1052 |
{
|
|
1053 |
const char *name; |
|
1054 |
const char *type; |
|
1055 |
int i; |
|
1056 |
||
1057 |
type = qemu_opt_get(opts, "type"); |
|
1058 |
if (!type) { |
|
1059 |
qerror_report(QERR_MISSING_PARAMETER, "type"); |
|
1060 |
return -1; |
|
1061 |
}
|
|
1062 |
||
1063 |
if (is_netdev) { |
|
1064 |
if (strcmp(type, "tap") != 0 && |
|
1065 |
#ifdef CONFIG_SLIRP
|
|
1066 |
strcmp(type, "user") != 0 && |
|
1067 |
#endif
|
|
1068 |
#ifdef CONFIG_VDE
|
|
1069 |
strcmp(type, "vde") != 0 && |
|
1070 |
#endif
|
|
1071 |
strcmp(type, "socket") != 0) { |
|
1072 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type", |
|
1073 |
"a netdev backend type"); |
|
1074 |
return -1; |
|
1075 |
}
|
|
1076 |
||
1077 |
if (qemu_opt_get(opts, "vlan")) { |
|
1078 |
qerror_report(QERR_INVALID_PARAMETER, "vlan"); |
|
1079 |
return -1; |
|
1080 |
}
|
|
1081 |
if (qemu_opt_get(opts, "name")) { |
|
1082 |
qerror_report(QERR_INVALID_PARAMETER, "name"); |
|
1083 |
return -1; |
|
1084 |
}
|
|
1085 |
if (!qemu_opts_id(opts)) { |
|
1086 |
qerror_report(QERR_MISSING_PARAMETER, "id"); |
|
1087 |
return -1; |
|
1088 |
}
|
|
1089 |
}
|
|
1090 |
||
1091 |
name = qemu_opts_id(opts); |
|
1092 |
if (!name) { |
|
1093 |
name = qemu_opt_get(opts, "name"); |
|
1094 |
}
|
|
1095 |
||
1096 |
for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) { |
|
1097 |
if (net_client_types[i].type != NULL && |
|
1098 |
!strcmp(net_client_types[i].type, type)) { |
|
1099 |
VLANState *vlan = NULL; |
|
1100 |
int ret; |
|
1101 |
||
1102 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
|
1103 |
return -1; |
|
1104 |
}
|
|
1105 |
||
1106 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
|
1107 |
* netdev= parameter. */
|
|
1108 |
if (!(is_netdev || |
|
1109 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
|
1110 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
|
1111 |
}
|
|
1112 |
||
1113 |
ret = 0; |
|
1114 |
if (net_client_types[i].init) { |
|
1115 |
ret = net_client_types[i].init(opts, mon, name, vlan); |
|
1116 |
if (ret < 0) { |
|
1117 |
/* TODO push error reporting into init() methods */
|
|
1118 |
qerror_report(QERR_DEVICE_INIT_FAILED, type); |
|
1119 |
return -1; |
|
1120 |
}
|
|
1121 |
}
|
|
1122 |
return ret; |
|
1123 |
}
|
|
1124 |
}
|
|
1125 |
||
1126 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type", |
|
1127 |
"a network client type"); |
|
1128 |
return -1; |
|
1129 |
}
|
|
1130 |
||
1131 |
static int net_host_check_device(const char *device) |
|
1132 |
{
|
|
1133 |
int i; |
|
1134 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
|
1135 |
#ifdef CONFIG_SLIRP
|
|
1136 |
,"user" |
|
1137 |
#endif
|
|
1138 |
#ifdef CONFIG_VDE
|
|
1139 |
,"vde" |
|
1140 |
#endif
|
|
1141 |
};
|
|
1142 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
|
1143 |
if (!strncmp(valid_param_list[i], device, |
|
1144 |
strlen(valid_param_list[i]))) |
|
1145 |
return 1; |
|
1146 |
}
|
|
1147 |
||
1148 |
return 0; |
|
1149 |
}
|
|
1150 |
||
1151 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
|
1152 |
{
|
|
1153 |
const char *device = qdict_get_str(qdict, "device"); |
|
1154 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
|
1155 |
QemuOpts *opts; |
|
1156 |
||
1157 |
if (!net_host_check_device(device)) { |
|
1158 |
monitor_printf(mon, "invalid host network device %s\n", device); |
|
1159 |
return; |
|
1160 |
}
|
|
1161 |
||
1162 |
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
|
1163 |
if (!opts) { |
|
1164 |
return; |
|
1165 |
}
|
|
1166 |
||
1167 |
qemu_opt_set(opts, "type", device); |
|
1168 |
||
1169 |
if (net_client_init(mon, opts, 0) < 0) { |
|
1170 |
monitor_printf(mon, "adding host network device %s failed\n", device); |
|
1171 |
}
|
|
1172 |
}
|
|
1173 |
||
1174 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
|
1175 |
{
|
|
1176 |
VLANClientState *vc; |
|
1177 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
|
1178 |
const char *device = qdict_get_str(qdict, "device"); |
|
1179 |
||
1180 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
|
1181 |
if (!vc) { |
|
1182 |
return; |
|
1183 |
}
|
|
1184 |
if (!net_host_check_device(vc->model)) { |
|
1185 |
monitor_printf(mon, "invalid host network device %s\n", device); |
|
1186 |
return; |
|
1187 |
}
|
|
1188 |
qemu_del_vlan_client(vc); |
|
1189 |
}
|
|
1190 |
||
1191 |
int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
|
1192 |
{
|
|
1193 |
QemuOpts *opts; |
|
1194 |
int res; |
|
1195 |
||
1196 |
opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict); |
|
1197 |
if (!opts) { |
|
1198 |
return -1; |
|
1199 |
}
|
|
1200 |
||
1201 |
res = net_client_init(mon, opts, 1); |
|
1202 |
if (res < 0) { |
|
1203 |
qemu_opts_del(opts); |
|
1204 |
}
|
|
1205 |
||
1206 |
return res; |
|
1207 |
}
|
|
1208 |
||
1209 |
int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
|
1210 |
{
|
|
1211 |
const char *id = qdict_get_str(qdict, "id"); |
|
1212 |
VLANClientState *vc; |
|
1213 |
||
1214 |
vc = qemu_find_netdev(id); |
|
1215 |
if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) { |
|
1216 |
qerror_report(QERR_DEVICE_NOT_FOUND, id); |
|
1217 |
return -1; |
|
1218 |
}
|
|
1219 |
qemu_del_vlan_client(vc); |
|
1220 |
qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id)); |
|
1221 |
return 0; |
|
1222 |
}
|
|
1223 |
||
1224 |
static void print_net_client(Monitor *mon, VLANClientState *vc) |
|
1225 |
{
|
|
1226 |
monitor_printf(mon, "%s: type=%s,%s\n", vc->name, |
|
1227 |
net_client_types[vc->info->type].type, vc->info_str); |
|
1228 |
}
|
|
1229 |
||
1230 |
void do_info_network(Monitor *mon) |
|
1231 |
{
|
|
1232 |
VLANState *vlan; |
|
1233 |
VLANClientState *vc, *peer; |
|
1234 |
net_client_type type; |
|
1235 |
||
1236 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
1237 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id); |
|
1238 |
||
1239 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
1240 |
monitor_printf(mon, " "); |
|
1241 |
print_net_client(mon, vc); |
|
1242 |
}
|
|
1243 |
}
|
|
1244 |
monitor_printf(mon, "Devices not on any VLAN:\n"); |
|
1245 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
|
1246 |
peer = vc->peer; |
|
1247 |
type = vc->info->type; |
|
1248 |
if (!peer || type == NET_CLIENT_TYPE_NIC) { |
|
1249 |
monitor_printf(mon, " "); |
|
1250 |
print_net_client(mon, vc); |
|
1251 |
} /* else it's a netdev connected to a NIC, printed with the NIC */ |
|
1252 |
if (peer && type == NET_CLIENT_TYPE_NIC) { |
|
1253 |
monitor_printf(mon, " \\ "); |
|
1254 |
print_net_client(mon, peer); |
|
1255 |
}
|
|
1256 |
}
|
|
1257 |
}
|
|
1258 |
||
1259 |
int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data) |
|
1260 |
{
|
|
1261 |
VLANState *vlan; |
|
1262 |
VLANClientState *vc = NULL; |
|
1263 |
const char *name = qdict_get_str(qdict, "name"); |
|
1264 |
int up = qdict_get_bool(qdict, "up"); |
|
1265 |
||
1266 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
1267 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
1268 |
if (strcmp(vc->name, name) == 0) { |
|
1269 |
goto done; |
|
1270 |
}
|
|
1271 |
}
|
|
1272 |
}
|
|
1273 |
vc = qemu_find_netdev(name); |
|
1274 |
done: |
|
1275 |
||
1276 |
if (!vc) { |
|
1277 |
qerror_report(QERR_DEVICE_NOT_FOUND, name); |
|
1278 |
return -1; |
|
1279 |
}
|
|
1280 |
||
1281 |
vc->link_down = !up; |
|
1282 |
||
1283 |
if (vc->info->link_status_changed) { |
|
1284 |
vc->info->link_status_changed(vc); |
|
1285 |
}
|
|
1286 |
||
1287 |
/* Notify peer. Don't update peer link status: this makes it possible to
|
|
1288 |
* disconnect from host network without notifying the guest.
|
|
1289 |
* FIXME: is disconnected link status change operation useful?
|
|
1290 |
*
|
|
1291 |
* Current behaviour is compatible with qemu vlans where there could be
|
|
1292 |
* multiple clients that can still communicate with each other in
|
|
1293 |
* disconnected mode. For now maintain this compatibility. */
|
|
1294 |
if (vc->peer && vc->peer->info->link_status_changed) { |
|
1295 |
vc->peer->info->link_status_changed(vc->peer); |
|
1296 |
}
|
|
1297 |
return 0; |
|
1298 |
}
|
|
1299 |
||
1300 |
void net_cleanup(void) |
|
1301 |
{
|
|
1302 |
VLANState *vlan; |
|
1303 |
VLANClientState *vc, *next_vc; |
|
1304 |
||
1305 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
1306 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { |
|
1307 |
qemu_del_vlan_client(vc); |
|
1308 |
}
|
|
1309 |
}
|
|
1310 |
||
1311 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { |
|
1312 |
qemu_del_vlan_client(vc); |
|
1313 |
}
|
|
1314 |
}
|
|
1315 |
||
1316 |
void net_check_clients(void) |
|
1317 |
{
|
|
1318 |
VLANState *vlan; |
|
1319 |
VLANClientState *vc; |
|
1320 |
int i; |
|
1321 |
||
1322 |
/* Don't warn about the default network setup that you get if
|
|
1323 |
* no command line -net or -netdev options are specified. There
|
|
1324 |
* are two cases that we would otherwise complain about:
|
|
1325 |
* (1) board doesn't support a NIC but the implicit "-net nic"
|
|
1326 |
* requested one
|
|
1327 |
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
|
|
1328 |
* sets up a nic that isn't connected to anything.
|
|
1329 |
*/
|
|
1330 |
if (default_net) { |
|
1331 |
return; |
|
1332 |
}
|
|
1333 |
||
1334 |
QTAILQ_FOREACH(vlan, &vlans, next) { |
|
1335 |
int has_nic = 0, has_host_dev = 0; |
|
1336 |
||
1337 |
QTAILQ_FOREACH(vc, &vlan->clients, next) { |
|
1338 |
switch (vc->info->type) { |
|
1339 |
case NET_CLIENT_TYPE_NIC: |
|
1340 |
has_nic = 1; |
|
1341 |
break; |
|
1342 |
case NET_CLIENT_TYPE_USER: |
|
1343 |
case NET_CLIENT_TYPE_TAP: |
|
1344 |
case NET_CLIENT_TYPE_SOCKET: |
|
1345 |
case NET_CLIENT_TYPE_VDE: |
|
1346 |
has_host_dev = 1; |
|
1347 |
break; |
|
1348 |
default: ; |
|
1349 |
}
|
|
1350 |
}
|
|
1351 |
if (has_host_dev && !has_nic) |
|
1352 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); |
|
1353 |
if (has_nic && !has_host_dev) |
|
1354 |
fprintf(stderr, |
|
1355 |
"Warning: vlan %d is not connected to host network\n", |
|
1356 |
vlan->id); |
|
1357 |
}
|
|
1358 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) { |
|
1359 |
if (!vc->peer) { |
|
1360 |
fprintf(stderr, "Warning: %s %s has no peer\n", |
|
1361 |
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", |
|
1362 |
vc->name); |
|
1363 |
}
|
|
1364 |
}
|
|
1365 |
||
1366 |
/* Check that all NICs requested via -net nic actually got created.
|
|
1367 |
* NICs created via -device don't need to be checked here because
|
|
1368 |
* they are always instantiated.
|
|
1369 |
*/
|
|
1370 |
for (i = 0; i < MAX_NICS; i++) { |
|
1371 |
NICInfo *nd = &nd_table[i]; |
|
1372 |
if (nd->used && !nd->instantiated) { |
|
1373 |
fprintf(stderr, "Warning: requested NIC (%s, model %s) " |
|
1374 |
"was not created (not supported by this machine?)\n", |
|
1375 |
nd->name ? nd->name : "anonymous", |
|
1376 |
nd->model ? nd->model : "unspecified"); |
|
1377 |
}
|
|
1378 |
}
|
|
1379 |
}
|
|
1380 |
||
1381 |
static int net_init_client(QemuOpts *opts, void *dummy) |
|
1382 |
{
|
|
1383 |
if (net_client_init(NULL, opts, 0) < 0) |
|
1384 |
return -1; |
|
1385 |
return 0; |
|
1386 |
}
|
|
1387 |
||
1388 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
|
1389 |
{
|
|
1390 |
return net_client_init(NULL, opts, 1); |
|
1391 |
}
|
|
1392 |
||
1393 |
int net_init_clients(void) |
|
1394 |
{
|
|
1395 |
QemuOptsList *net = qemu_find_opts("net"); |
|
1396 |
||
1397 |
if (default_net) { |
|
1398 |
/* if no clients, we use a default config */
|
|
1399 |
qemu_opts_set(net, NULL, "type", "nic"); |
|
1400 |
#ifdef CONFIG_SLIRP
|
|
1401 |
qemu_opts_set(net, NULL, "type", "user"); |
|
1402 |
#endif
|
|
1403 |
}
|
|
1404 |
||
1405 |
QTAILQ_INIT(&vlans); |
|
1406 |
QTAILQ_INIT(&non_vlan_clients); |
|
1407 |
||
1408 |
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |
|
1409 |
return -1; |
|
1410 |
||
1411 |
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { |
|
1412 |
return -1; |
|
1413 |
}
|
|
1414 |
||
1415 |
return 0; |
|
1416 |
}
|
|
1417 |
||
1418 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
|
1419 |
{
|
|
1420 |
#if defined(CONFIG_SLIRP)
|
|
1421 |
int ret; |
|
1422 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { |
|
1423 |
return ret; |
|
1424 |
}
|
|
1425 |
#endif
|
|
1426 |
||
1427 |
if (!qemu_opts_parse(opts_list, optarg, 1)) { |
|
1428 |
return -1; |
|
1429 |
}
|
|
1430 |
||
1431 |
default_net = 0; |
|
1432 |
return 0; |
|
1433 |
}
|