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net: move dump backend code from net.c to net/dump.c 

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-11-25 18:48:57 +00:00 committed by Anthony Liguori
parent 42281ac9a3
commit 1abecf77d8
4 changed files with 186 additions and 126 deletions
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1
Makefile
View File

@ -101,6 +101,7 @@ block-obj-y += $(addprefix block/, $(block-nested-y))
net-obj-y = net.o
net-nested-y = queue.o checksum.o
net-nested-y += socket.o
net-nested-y += dump.o
net-nested-$(CONFIG_POSIX) += tap.o
net-nested-$(CONFIG_LINUX) += tap-linux.o
net-nested-$(CONFIG_WIN32) += tap-win32.o

127
net.c
View File

@ -90,6 +90,7 @@
#include "net.h"
#include "net/tap.h"
#include "net/socket.h"
#include "net/dump.h"
#include "net/slirp.h"
#include "net/vde.h"
#include "monitor.h"
@ -717,110 +718,6 @@ qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
}
typedef struct DumpState {
VLANClientState *pcap_vc;
int fd;
int pcap_caplen;
} DumpState;
#define PCAP_MAGIC 0xa1b2c3d4
struct pcap_file_hdr {
uint32_t magic;
uint16_t version_major;
uint16_t version_minor;
int32_t thiszone;
uint32_t sigfigs;
uint32_t snaplen;
uint32_t linktype;
};
struct pcap_sf_pkthdr {
struct {
int32_t tv_sec;
int32_t tv_usec;
} ts;
uint32_t caplen;
uint32_t len;
};
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
{
DumpState *s = vc->opaque;
struct pcap_sf_pkthdr hdr;
int64_t ts;
int caplen;
/* Early return in case of previous error. */
if (s->fd < 0) {
return size;
}
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
hdr.ts.tv_sec = ts / 1000000;
hdr.ts.tv_usec = ts % 1000000;
hdr.caplen = caplen;
hdr.len = size;
if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
write(s->fd, buf, caplen) != caplen) {
qemu_log("-net dump write error - stop dump\n");
close(s->fd);
s->fd = -1;
}
return size;
}
static void net_dump_cleanup(VLANClientState *vc)
{
DumpState *s = vc->opaque;
close(s->fd);
qemu_free(s);
}
static int net_dump_init(VLANState *vlan, const char *device,
const char *name, const char *filename, int len)
{
struct pcap_file_hdr hdr;
DumpState *s;
s = qemu_malloc(sizeof(DumpState));
s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
if (s->fd < 0) {
qemu_error("-net dump: can't open %s\n", filename);
return -1;
}
s->pcap_caplen = len;
hdr.magic = PCAP_MAGIC;
hdr.version_major = 2;
hdr.version_minor = 4;
hdr.thiszone = 0;
hdr.sigfigs = 0;
hdr.snaplen = s->pcap_caplen;
hdr.linktype = 1;
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
qemu_error("-net dump write error: %s\n", strerror(errno));
close(s->fd);
qemu_free(s);
return -1;
}
s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
vlan, NULL, device, name, NULL,
dump_receive, NULL, NULL,
net_dump_cleanup, s);
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
"dump to %s (len=%d)", filename, len);
return 0;
}
/* find or alloc a new VLAN */
VLANState *qemu_find_vlan(int id, int allocate)
{
@ -1000,28 +897,6 @@ static int net_init_nic(QemuOpts *opts,
return idx;
}
static int net_init_dump(QemuOpts *opts,
Monitor *mon,
const char *name,
VLANState *vlan)
{
int len;
const char *file;
char def_file[128];
assert(vlan);
file = qemu_opt_get(opts, "file");
if (!file) {
snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
file = def_file;
}
len = qemu_opt_get_size(opts, "len", 65536);
return net_dump_init(vlan, "dump", name, file, len);
}
#define NET_COMMON_PARAMS_DESC \
{ \
.name = "type", \

151
net/dump.c Normal file
View File

@ -0,0 +1,151 @@
/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "dump.h"
#include "qemu-common.h"
#include "sysemu.h"
#include "qemu-log.h"
typedef struct DumpState {
VLANClientState *pcap_vc;
int fd;
int pcap_caplen;
} DumpState;
#define PCAP_MAGIC 0xa1b2c3d4
struct pcap_file_hdr {
uint32_t magic;
uint16_t version_major;
uint16_t version_minor;
int32_t thiszone;
uint32_t sigfigs;
uint32_t snaplen;
uint32_t linktype;
};
struct pcap_sf_pkthdr {
struct {
int32_t tv_sec;
int32_t tv_usec;
} ts;
uint32_t caplen;
uint32_t len;
};
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
{
DumpState *s = vc->opaque;
struct pcap_sf_pkthdr hdr;
int64_t ts;
int caplen;
/* Early return in case of previous error. */
if (s->fd < 0) {
return size;
}
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
hdr.ts.tv_sec = ts / 1000000;
hdr.ts.tv_usec = ts % 1000000;
hdr.caplen = caplen;
hdr.len = size;
if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
write(s->fd, buf, caplen) != caplen) {
qemu_log("-net dump write error - stop dump\n");
close(s->fd);
s->fd = -1;
}
return size;
}
static void net_dump_cleanup(VLANClientState *vc)
{
DumpState *s = vc->opaque;
close(s->fd);
qemu_free(s);
}
static int net_dump_init(VLANState *vlan, const char *device,
const char *name, const char *filename, int len)
{
struct pcap_file_hdr hdr;
DumpState *s;
s = qemu_malloc(sizeof(DumpState));
s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
if (s->fd < 0) {
qemu_error("-net dump: can't open %s\n", filename);
return -1;
}
s->pcap_caplen = len;
hdr.magic = PCAP_MAGIC;
hdr.version_major = 2;
hdr.version_minor = 4;
hdr.thiszone = 0;
hdr.sigfigs = 0;
hdr.snaplen = s->pcap_caplen;
hdr.linktype = 1;
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
qemu_error("-net dump write error: %s\n", strerror(errno));
close(s->fd);
qemu_free(s);
return -1;
}
s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
vlan, NULL, device, name, NULL,
dump_receive, NULL, NULL,
net_dump_cleanup, s);
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
"dump to %s (len=%d)", filename, len);
return 0;
}
int net_init_dump(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan)
{
int len;
const char *file;
char def_file[128];
assert(vlan);
file = qemu_opt_get(opts, "file");
if (!file) {
snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
file = def_file;
}
len = qemu_opt_get_size(opts, "len", 65536);
return net_dump_init(vlan, "dump", name, file, len);
}

33
net/dump.h Normal file
View File

@ -0,0 +1,33 @@
/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef QEMU_NET_DUMP_H
#define QEMU_NET_DUMP_H
#include "net.h"
#include "qemu-common.h"
int net_init_dump(QemuOpts *opts, Monitor *mon,
const char *name, VLANState *vlan);
#endif /* QEMU_NET_DUMP_H */