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[PATCH 3/3] net/colo-compare: Add handler for passthrough connection
From: |
Zhang Chen |
Subject: |
[PATCH 3/3] net/colo-compare: Add handler for passthrough connection |
Date: |
Thu, 24 Dec 2020 09:09:18 +0800 |
From: Zhang Chen <chen.zhang@intel.com>
Currently, we just use guest's TCP/UDP source port as the key
to bypass certain network traffic.
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
---
net/colo-compare.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++
net/colo-compare.h | 2 ++
net/net.c | 27 +++++++++++++++++++++++++
3 files changed, 78 insertions(+)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index 337025b44f..11a32caa9b 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -46,6 +46,9 @@ static QTAILQ_HEAD(, CompareState) net_compares =
static NotifierList colo_compare_notifiers =
NOTIFIER_LIST_INITIALIZER(colo_compare_notifiers);
+static QLIST_HEAD(, PassthroughEntry) passthroughlist =
+ QLIST_HEAD_INITIALIZER(passthroughlist);
+
#define COMPARE_READ_LEN_MAX NET_BUFSIZE
#define MAX_QUEUE_SIZE 1024
@@ -103,6 +106,12 @@ typedef struct SendEntry {
uint8_t *buf;
} SendEntry;
+typedef struct PassthroughEntry {
+ bool is_tcp;
+ uint16_t port;
+ QLIST_ENTRY(PassthroughEntry) node;
+} PassthroughEntry;
+
struct CompareState {
Object parent;
@@ -247,6 +256,7 @@ static int packet_enqueue(CompareState *s, int mode,
Connection **con)
ConnectionKey key;
Packet *pkt = NULL;
Connection *conn;
+ PassthroughEntry *bypass, *next;
int ret;
if (mode == PRIMARY_IN) {
@@ -264,8 +274,23 @@ static int packet_enqueue(CompareState *s, int mode,
Connection **con)
pkt = NULL;
return -1;
}
+
fill_connection_key(pkt, &key);
+ /* Check COLO passthrough connenction */
+ if (!QLIST_EMPTY(&passthroughlist)) {
+ QLIST_FOREACH_SAFE(bypass, &passthroughlist, node, next) {
+ if (((key.ip_proto == IPPROTO_TCP) && bypass->is_tcp) ||
+ ((key.ip_proto == IPPROTO_UDP) && !bypass->is_tcp)) {
+ if (bypass->port == key.src_port) {
+ packet_destroy(pkt, NULL);
+ pkt = NULL;
+ return -1;
+ }
+ }
+ }
+ }
+
conn = connection_get(s->connection_track_table,
&key,
&s->conn_list);
@@ -1373,6 +1398,30 @@ static void colo_flush_packets(void *opaque, void
*user_data)
}
}
+void colo_compare_passthrough_add(bool is_tcp, const uint16_t port)
+{
+ PassthroughEntry *bypass = NULL;
+
+ bypass = g_new0(PassthroughEntry, 1);
+ bypass->is_tcp = is_tcp;
+ bypass->port = port;
+ QLIST_INSERT_HEAD(&passthroughlist, bypass, node);
+}
+
+void colo_compare_passthrough_del(bool is_tcp, const uint16_t port)
+{
+ PassthroughEntry *bypass = NULL, *next = NULL;
+
+ if (!QLIST_EMPTY(&passthroughlist)) {
+ QLIST_FOREACH_SAFE(bypass, &passthroughlist, node, next) {
+ if ((bypass->is_tcp == is_tcp) && (bypass->port == port)) {
+ QLIST_REMOVE(bypass, node);
+ g_free(bypass);
+ }
+ }
+ }
+}
+
static void colo_compare_class_init(ObjectClass *oc, void *data)
{
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
diff --git a/net/colo-compare.h b/net/colo-compare.h
index 22ddd512e2..1fa026c85e 100644
--- a/net/colo-compare.h
+++ b/net/colo-compare.h
@@ -20,5 +20,7 @@
void colo_notify_compares_event(void *opaque, int event, Error **errp);
void colo_compare_register_notifier(Notifier *notify);
void colo_compare_unregister_notifier(Notifier *notify);
+void colo_compare_passthrough_add(bool is_tcp, const uint16_t port);
+void colo_compare_passthrough_del(bool is_tcp, const uint16_t port);
#endif /* QEMU_COLO_COMPARE_H */
diff --git a/net/net.c b/net/net.c
index eac7a92618..1f303e8309 100644
--- a/net/net.c
+++ b/net/net.c
@@ -55,6 +55,7 @@
#include "sysemu/sysemu.h"
#include "net/filter.h"
#include "qapi/string-output-visitor.h"
+#include "net/colo-compare.h"
/* Net bridge is currently not supported for W32. */
#if !defined(_WIN32)
@@ -1155,12 +1156,38 @@ void qmp_colo_passthrough_add(const char *prot, const
uint32_t port,
Error **errp)
{
/* Setup passthrough connection */
+ if (port > 65536) {
+ error_setg(errp, "COLO pass through get wrong port");
+ return;
+ }
+
+ if (!strcmp(prot, "tcp") || !strcmp(prot, "TCP")) {
+ colo_compare_passthrough_add(true, (uint16_t)port);
+ } else if (!strcmp(prot, "udp") || !strcmp(prot, "UDP")) {
+ colo_compare_passthrough_add(false, (uint16_t)port);
+ } else {
+ error_setg(errp, "COLO pass through just support tcp or udp protocol");
+ return;
+ }
}
void qmp_colo_passthrough_del(const char *prot, const uint32_t port,
Error **errp)
{
/* Delete passthrough connection */
+ if (port > 65536) {
+ error_setg(errp, "COLO pass through get wrong port");
+ return;
+ }
+
+ if (!strcmp(prot, "tcp") || !strcmp(prot, "TCP")) {
+ colo_compare_passthrough_del(true, (uint16_t)port);
+ } else if (!strcmp(prot, "udp") || !strcmp(prot, "UDP")) {
+ colo_compare_passthrough_del(false, (uint16_t)port);
+ } else {
+ error_setg(errp, "COLO pass through just support tcp or udp protocol");
+ return;
+ }
}
static void netfilter_print_info(Monitor *mon, NetFilterState *nf)
--
2.17.1
- [PATCH 0/3] Bypass specific network traffic in COLO, Zhang Chen, 2020/12/23
- [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Zhang Chen, 2020/12/23
- Re: [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Jason Wang, 2020/12/25
- RE: [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Zhang, Chen, 2020/12/27
- Re: [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Jason Wang, 2020/12/28
- RE: [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Zhang, Chen, 2020/12/28
- Re: [PATCH 1/3] qapi/net: Add new QMP command for COLO passthrough, Jason Wang, 2020/12/29
[PATCH 3/3] net/colo-compare: Add handler for passthrough connection,
Zhang Chen <=
[PATCH 2/3] hmp-commands: Add new HMP command for COLO passthrough, Zhang Chen, 2020/12/23
Re: [PATCH 0/3] Bypass specific network traffic in COLO, Jason Wang, 2020/12/25