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authorZhang Chen <zhangchen.fnst@cn.fujitsu.com>2017-07-04 14:53:52 +0800
committerJason Wang <jasowang@redhat.com>2017-07-17 20:13:50 +0800
commitaa3a7032f73f603818ea3e781b19ce8eab0d33f1 (patch)
treede1edbd56d51f87a372e284c33f96550cd3eac40 /net/colo-compare.c
parent3037e7a5b7670e9b99dd61e3fe4b9e41ce8c1143 (diff)
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net/colo-compare.c: Make colo-compare support vnet_hdr_len
We add the vnet_hdr_support option for colo-compare, default is disabled. If you use virtio-net-pci or other driver needs vnet_hdr, please enable it. You can use it for example: -object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0,vnet_hdr_support COLO-compare can get vnet header length from filter, Add vnet_hdr_len to struct packet and output packet with the vnet_hdr_len. Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net/colo-compare.c')
-rw-r--r--net/colo-compare.c60
1 files changed, 53 insertions, 7 deletions
diff --git a/net/colo-compare.c b/net/colo-compare.c
index c5d01da..95911a2 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -73,6 +73,7 @@ typedef struct CompareState {
CharBackend chr_out;
SocketReadState pri_rs;
SocketReadState sec_rs;
+ bool vnet_hdr;
/* connection list: the connections belonged to this NIC could be found
* in this list.
@@ -99,7 +100,8 @@ enum {
static int compare_chr_send(CompareState *s,
const uint8_t *buf,
- uint32_t size);
+ uint32_t size,
+ uint32_t vnet_hdr_len);
static gint seq_sorter(Packet *a, Packet *b, gpointer data)
{
@@ -483,7 +485,10 @@ static void colo_compare_connection(void *opaque, void *user_data)
}
if (result) {
- ret = compare_chr_send(s, pkt->data, pkt->size);
+ ret = compare_chr_send(s,
+ pkt->data,
+ pkt->size,
+ pkt->vnet_hdr_len);
if (ret < 0) {
error_report("colo_send_primary_packet failed");
}
@@ -506,7 +511,8 @@ static void colo_compare_connection(void *opaque, void *user_data)
static int compare_chr_send(CompareState *s,
const uint8_t *buf,
- uint32_t size)
+ uint32_t size,
+ uint32_t vnet_hdr_len)
{
int ret = 0;
uint32_t len = htonl(size);
@@ -520,6 +526,18 @@ static int compare_chr_send(CompareState *s,
goto err;
}
+ if (s->vnet_hdr) {
+ /*
+ * We send vnet header len make other module(like filter-redirector)
+ * know how to parse net packet correctly.
+ */
+ len = htonl(vnet_hdr_len);
+ ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof(len));
+ if (ret != sizeof(len)) {
+ goto err;
+ }
+ }
+
ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size);
if (ret != size) {
goto err;
@@ -659,13 +677,32 @@ static void compare_set_outdev(Object *obj, const char *value, Error **errp)
s->outdev = g_strdup(value);
}
+static bool compare_get_vnet_hdr(Object *obj, Error **errp)
+{
+ CompareState *s = COLO_COMPARE(obj);
+
+ return s->vnet_hdr;
+}
+
+static void compare_set_vnet_hdr(Object *obj,
+ bool value,
+ Error **errp)
+{
+ CompareState *s = COLO_COMPARE(obj);
+
+ s->vnet_hdr = value;
+}
+
static void compare_pri_rs_finalize(SocketReadState *pri_rs)
{
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, pri_rs->buf, pri_rs->packet_len);
+ compare_chr_send(s,
+ pri_rs->buf,
+ pri_rs->packet_len,
+ pri_rs->vnet_hdr_len);
} else {
/* compare connection */
g_queue_foreach(&s->conn_list, colo_compare_connection, s);
@@ -747,8 +784,8 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
return;
}
- net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, false);
- net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, false);
+ net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, s->vnet_hdr);
+ net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, s->vnet_hdr);
g_queue_init(&s->conn_list);
@@ -774,7 +811,10 @@ static void colo_flush_packets(void *opaque, void *user_data)
while (!g_queue_is_empty(&conn->primary_list)) {
pkt = g_queue_pop_head(&conn->primary_list);
- compare_chr_send(s, pkt->data, pkt->size);
+ compare_chr_send(s,
+ pkt->data,
+ pkt->size,
+ pkt->vnet_hdr_len);
packet_destroy(pkt, NULL);
}
while (!g_queue_is_empty(&conn->secondary_list)) {
@@ -792,6 +832,8 @@ static void colo_compare_class_init(ObjectClass *oc, void *data)
static void colo_compare_init(Object *obj)
{
+ CompareState *s = COLO_COMPARE(obj);
+
object_property_add_str(obj, "primary_in",
compare_get_pri_indev, compare_set_pri_indev,
NULL);
@@ -801,6 +843,10 @@ static void colo_compare_init(Object *obj)
object_property_add_str(obj, "outdev",
compare_get_outdev, compare_set_outdev,
NULL);
+
+ s->vnet_hdr = false;
+ object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr,
+ compare_set_vnet_hdr, NULL);
}
static void colo_compare_finalize(Object *obj)