net/colo.c: add colo.c to define and handle packet
The net/colo.c is used by colo-compare and filter-rewriter. this can share common data structure like net packet, and other functions. Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
parent
7dce4e6fd2
commit
59509ec16b
@ -17,3 +17,4 @@ common-obj-y += filter.o
|
|||||||
common-obj-y += filter-buffer.o
|
common-obj-y += filter-buffer.o
|
||||||
common-obj-y += filter-mirror.o
|
common-obj-y += filter-mirror.o
|
||||||
common-obj-y += colo-compare.o
|
common-obj-y += colo-compare.o
|
||||||
|
common-obj-y += colo.o
|
||||||
|
@ -14,6 +14,7 @@
|
|||||||
|
|
||||||
#include "qemu/osdep.h"
|
#include "qemu/osdep.h"
|
||||||
#include "qemu/error-report.h"
|
#include "qemu/error-report.h"
|
||||||
|
#include "trace.h"
|
||||||
#include "qemu-common.h"
|
#include "qemu-common.h"
|
||||||
#include "qapi/qmp/qerror.h"
|
#include "qapi/qmp/qerror.h"
|
||||||
#include "qapi/error.h"
|
#include "qapi/error.h"
|
||||||
@ -26,13 +27,34 @@
|
|||||||
#include "sysemu/char.h"
|
#include "sysemu/char.h"
|
||||||
#include "qemu/sockets.h"
|
#include "qemu/sockets.h"
|
||||||
#include "qapi-visit.h"
|
#include "qapi-visit.h"
|
||||||
|
#include "net/colo.h"
|
||||||
|
|
||||||
#define TYPE_COLO_COMPARE "colo-compare"
|
#define TYPE_COLO_COMPARE "colo-compare"
|
||||||
#define COLO_COMPARE(obj) \
|
#define COLO_COMPARE(obj) \
|
||||||
OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE)
|
OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE)
|
||||||
|
|
||||||
#define COMPARE_READ_LEN_MAX NET_BUFSIZE
|
/*
|
||||||
|
+ CompareState ++
|
||||||
|
| |
|
||||||
|
+---------------+ +---------------+ +---------------+
|
||||||
|
|conn list +--->conn +--------->conn |
|
||||||
|
+---------------+ +---------------+ +---------------+
|
||||||
|
| | | | | |
|
||||||
|
+---------------+ +---v----+ +---v----+ +---v----+ +---v----+
|
||||||
|
|primary | |secondary |primary | |secondary
|
||||||
|
|packet | |packet + |packet | |packet +
|
||||||
|
+--------+ +--------+ +--------+ +--------+
|
||||||
|
| | | |
|
||||||
|
+---v----+ +---v----+ +---v----+ +---v----+
|
||||||
|
|primary | |secondary |primary | |secondary
|
||||||
|
|packet | |packet + |packet | |packet +
|
||||||
|
+--------+ +--------+ +--------+ +--------+
|
||||||
|
| | | |
|
||||||
|
+---v----+ +---v----+ +---v----+ +---v----+
|
||||||
|
|primary | |secondary |primary | |secondary
|
||||||
|
|packet | |packet + |packet | |packet +
|
||||||
|
+--------+ +--------+ +--------+ +--------+
|
||||||
|
*/
|
||||||
typedef struct CompareState {
|
typedef struct CompareState {
|
||||||
Object parent;
|
Object parent;
|
||||||
|
|
||||||
@ -44,6 +66,9 @@ typedef struct CompareState {
|
|||||||
CharDriverState *chr_out;
|
CharDriverState *chr_out;
|
||||||
SocketReadState pri_rs;
|
SocketReadState pri_rs;
|
||||||
SocketReadState sec_rs;
|
SocketReadState sec_rs;
|
||||||
|
|
||||||
|
/* hashtable to save connection */
|
||||||
|
GHashTable *connection_track_table;
|
||||||
} CompareState;
|
} CompareState;
|
||||||
|
|
||||||
typedef struct CompareClass {
|
typedef struct CompareClass {
|
||||||
@ -54,6 +79,76 @@ typedef struct CompareChardevProps {
|
|||||||
bool is_socket;
|
bool is_socket;
|
||||||
} CompareChardevProps;
|
} CompareChardevProps;
|
||||||
|
|
||||||
|
enum {
|
||||||
|
PRIMARY_IN = 0,
|
||||||
|
SECONDARY_IN,
|
||||||
|
};
|
||||||
|
|
||||||
|
static int compare_chr_send(CharDriverState *out,
|
||||||
|
const uint8_t *buf,
|
||||||
|
uint32_t size);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Return 0 on success, if return -1 means the pkt
|
||||||
|
* is unsupported(arp and ipv6) and will be sent later
|
||||||
|
*/
|
||||||
|
static int packet_enqueue(CompareState *s, int mode)
|
||||||
|
{
|
||||||
|
Packet *pkt = NULL;
|
||||||
|
|
||||||
|
if (mode == PRIMARY_IN) {
|
||||||
|
pkt = packet_new(s->pri_rs.buf, s->pri_rs.packet_len);
|
||||||
|
} else {
|
||||||
|
pkt = packet_new(s->sec_rs.buf, s->sec_rs.packet_len);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (parse_packet_early(pkt)) {
|
||||||
|
packet_destroy(pkt, NULL);
|
||||||
|
pkt = NULL;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
/* TODO: get connection key from pkt */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* TODO: use connection key get conn from
|
||||||
|
* connection_track_table
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* TODO: insert pkt to it's conn->primary_list
|
||||||
|
* or conn->secondary_list
|
||||||
|
*/
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int compare_chr_send(CharDriverState *out,
|
||||||
|
const uint8_t *buf,
|
||||||
|
uint32_t size)
|
||||||
|
{
|
||||||
|
int ret = 0;
|
||||||
|
uint32_t len = htonl(size);
|
||||||
|
|
||||||
|
if (!size) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = qemu_chr_fe_write_all(out, (uint8_t *)&len, sizeof(len));
|
||||||
|
if (ret != sizeof(len)) {
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = qemu_chr_fe_write_all(out, (uint8_t *)buf, size);
|
||||||
|
if (ret != size) {
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
err:
|
||||||
|
return ret < 0 ? ret : -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
static char *compare_get_pri_indev(Object *obj, Error **errp)
|
static char *compare_get_pri_indev(Object *obj, Error **errp)
|
||||||
{
|
{
|
||||||
CompareState *s = COLO_COMPARE(obj);
|
CompareState *s = COLO_COMPARE(obj);
|
||||||
@ -101,12 +196,21 @@ static void compare_set_outdev(Object *obj, const char *value, Error **errp)
|
|||||||
|
|
||||||
static void compare_pri_rs_finalize(SocketReadState *pri_rs)
|
static void compare_pri_rs_finalize(SocketReadState *pri_rs)
|
||||||
{
|
{
|
||||||
/* if packet_enqueue pri pkt failed we will send unsupported packet */
|
CompareState *s = container_of(pri_rs, CompareState, pri_rs);
|
||||||
|
|
||||||
|
if (packet_enqueue(s, PRIMARY_IN)) {
|
||||||
|
trace_colo_compare_main("primary: unsupported packet in");
|
||||||
|
compare_chr_send(s->chr_out, pri_rs->buf, pri_rs->packet_len);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
static void compare_sec_rs_finalize(SocketReadState *sec_rs)
|
static void compare_sec_rs_finalize(SocketReadState *sec_rs)
|
||||||
{
|
{
|
||||||
/* if packet_enqueue sec pkt failed we will notify trace */
|
CompareState *s = container_of(sec_rs, CompareState, sec_rs);
|
||||||
|
|
||||||
|
if (packet_enqueue(s, SECONDARY_IN)) {
|
||||||
|
trace_colo_compare_main("secondary: unsupported packet in");
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
static int compare_chardev_opts(void *opaque,
|
static int compare_chardev_opts(void *opaque,
|
||||||
@ -204,6 +308,8 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
|
|||||||
net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize);
|
net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize);
|
||||||
net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize);
|
net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize);
|
||||||
|
|
||||||
|
/* use g_hash_table_new_full() to new a hashtable */
|
||||||
|
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
86
net/colo.c
Normal file
86
net/colo.c
Normal file
@ -0,0 +1,86 @@
|
|||||||
|
/*
|
||||||
|
* COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
|
||||||
|
* (a.k.a. Fault Tolerance or Continuous Replication)
|
||||||
|
*
|
||||||
|
* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
|
||||||
|
* Copyright (c) 2016 FUJITSU LIMITED
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
|
||||||
|
*
|
||||||
|
* This work is licensed under the terms of the GNU GPL, version 2 or
|
||||||
|
* later. See the COPYING file in the top-level directory.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "qemu/osdep.h"
|
||||||
|
#include "trace.h"
|
||||||
|
#include "net/colo.h"
|
||||||
|
|
||||||
|
int parse_packet_early(Packet *pkt)
|
||||||
|
{
|
||||||
|
int network_length;
|
||||||
|
static const uint8_t vlan[] = {0x81, 0x00};
|
||||||
|
uint8_t *data = pkt->data;
|
||||||
|
uint16_t l3_proto;
|
||||||
|
ssize_t l2hdr_len = eth_get_l2_hdr_length(data);
|
||||||
|
|
||||||
|
if (pkt->size < ETH_HLEN) {
|
||||||
|
trace_colo_proxy_main("pkt->size < ETH_HLEN");
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* TODO: support vlan.
|
||||||
|
*/
|
||||||
|
if (!memcmp(&data[12], vlan, sizeof(vlan))) {
|
||||||
|
trace_colo_proxy_main("COLO-proxy don't support vlan");
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
pkt->network_header = data + l2hdr_len;
|
||||||
|
|
||||||
|
const struct iovec l2vec = {
|
||||||
|
.iov_base = (void *) data,
|
||||||
|
.iov_len = l2hdr_len
|
||||||
|
};
|
||||||
|
l3_proto = eth_get_l3_proto(&l2vec, 1, l2hdr_len);
|
||||||
|
|
||||||
|
if (l3_proto != ETH_P_IP) {
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
network_length = pkt->ip->ip_hl * 4;
|
||||||
|
if (pkt->size < l2hdr_len + network_length) {
|
||||||
|
trace_colo_proxy_main("pkt->size < network_header + network_length");
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
pkt->transport_header = pkt->network_header + network_length;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
Packet *packet_new(const void *data, int size)
|
||||||
|
{
|
||||||
|
Packet *pkt = g_slice_new(Packet);
|
||||||
|
|
||||||
|
pkt->data = g_memdup(data, size);
|
||||||
|
pkt->size = size;
|
||||||
|
|
||||||
|
return pkt;
|
||||||
|
}
|
||||||
|
|
||||||
|
void packet_destroy(void *opaque, void *user_data)
|
||||||
|
{
|
||||||
|
Packet *pkt = opaque;
|
||||||
|
|
||||||
|
g_free(pkt->data);
|
||||||
|
g_slice_free(Packet, pkt);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Clear hashtable, stop this hash growing really huge
|
||||||
|
*/
|
||||||
|
void connection_hashtable_reset(GHashTable *connection_track_table)
|
||||||
|
{
|
||||||
|
g_hash_table_remove_all(connection_track_table);
|
||||||
|
}
|
37
net/colo.h
Normal file
37
net/colo.h
Normal file
@ -0,0 +1,37 @@
|
|||||||
|
/*
|
||||||
|
* COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
|
||||||
|
* (a.k.a. Fault Tolerance or Continuous Replication)
|
||||||
|
*
|
||||||
|
* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
|
||||||
|
* Copyright (c) 2016 FUJITSU LIMITED
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
|
||||||
|
*
|
||||||
|
* This work is licensed under the terms of the GNU GPL, version 2 or
|
||||||
|
* later. See the COPYING file in the top-level directory.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef QEMU_COLO_PROXY_H
|
||||||
|
#define QEMU_COLO_PROXY_H
|
||||||
|
|
||||||
|
#include "slirp/slirp.h"
|
||||||
|
|
||||||
|
#define HASHTABLE_MAX_SIZE 16384
|
||||||
|
|
||||||
|
typedef struct Packet {
|
||||||
|
void *data;
|
||||||
|
union {
|
||||||
|
uint8_t *network_header;
|
||||||
|
struct ip *ip;
|
||||||
|
};
|
||||||
|
uint8_t *transport_header;
|
||||||
|
int size;
|
||||||
|
} Packet;
|
||||||
|
|
||||||
|
int parse_packet_early(Packet *pkt);
|
||||||
|
void connection_hashtable_reset(GHashTable *connection_track_table);
|
||||||
|
Packet *packet_new(const void *data, int size);
|
||||||
|
void packet_destroy(void *opaque, void *user_data);
|
||||||
|
|
||||||
|
#endif /* QEMU_COLO_PROXY_H */
|
@ -139,6 +139,12 @@ memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t v
|
|||||||
memory_region_tb_read(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
|
memory_region_tb_read(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
|
||||||
memory_region_tb_write(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
|
memory_region_tb_write(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
|
||||||
|
|
||||||
|
# net/colo.c
|
||||||
|
colo_proxy_main(const char *chr) ": %s"
|
||||||
|
|
||||||
|
# net/colo-compare.c
|
||||||
|
colo_compare_main(const char *chr) ": %s"
|
||||||
|
|
||||||
### Guest events, keep at bottom
|
### Guest events, keep at bottom
|
||||||
|
|
||||||
# @vaddr: Access' virtual address.
|
# @vaddr: Access' virtual address.
|
||||||
|
Loading…
Reference in New Issue
Block a user