[Xen-devel] [PATCH v8 --for 4.6 COLO 24/25] setup and control colo proxy on secondary side

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

setup and control colo proxy on secondary side

Signed-off-by: Yang Hongyang <yanghy@xxxxxxxxxxxxxx>
---
 tools/libxl/libxl_colo_restore.c | 28 +++++++++++++++++++++++++---
 tools/libxl/libxl_internal.h     |  3 +++
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/tools/libxl/libxl_colo_restore.c b/tools/libxl/libxl_colo_restore.c
index 96ea0b9..da546f9 100644
--- a/tools/libxl/libxl_colo_restore.c
+++ b/tools/libxl/libxl_colo_restore.c
@@ -49,9 +49,11 @@ static void 
libxl__colo_restore_domain_checkpoint_callback(void *data);
 static void libxl__colo_restore_domain_should_checkpoint_callback(void *data);
 static void libxl__colo_restore_domain_suspend_callback(void *data);
 
+extern const libxl__checkpoint_device_instance_ops colo_restore_device_nic;
 extern const libxl__checkpoint_device_instance_ops colo_restore_device_qdisk;
 
 static const libxl__checkpoint_device_instance_ops *colo_restore_ops[] = {
+    &colo_restore_device_nic,
     &colo_restore_device_qdisk,
     NULL,
 };
@@ -151,8 +153,14 @@ static int 
init_device_subkind(libxl__checkpoint_devices_state *cds)
     int rc;
     STATE_AO_GC(cds->ao);
 
+    rc = init_subkind_colo_nic(cds);
+    if (rc) goto out;
+
     rc = init_subkind_qdisk(cds);
-    if (rc)  goto out;
+    if (rc) {
+        cleanup_subkind_colo_nic(cds);
+        goto out;
+    }
 
     rc = 0;
 out:
@@ -164,6 +172,7 @@ static void 
cleanup_device_subkind(libxl__checkpoint_devices_state *cds)
     /* cleanup device subkind-specific state in the libxl ctx */
     STATE_AO_GC(cds->ao);
 
+    cleanup_subkind_colo_nic(cds);
     cleanup_subkind_qdisk(cds);
 }
 
@@ -351,6 +360,8 @@ static void colo_restore_teardown_done(libxl__egc *egc,
     if (crcs->teardown_devices)
         cleanup_device_subkind(cds);
 
+    colo_proxy_teardown(&crs->cps);
+
     rc = crcs->saved_rc;
     if (!rc) {
         crcs->callback = do_failover_done;
@@ -535,6 +546,8 @@ static void colo_restore_preresume_cb(libxl__egc *egc,
         goto out;
     }
 
+    colo_proxy_preresume(&crs->cps);
+
     colo_restore_resume_vm(egc, crcs);
 
     return;
@@ -571,6 +584,8 @@ static void colo_resume_vm_done(libxl__egc *egc,
 
     crcs->status = LIBXL_COLO_RESUMED;
 
+    colo_proxy_postresume(&crs->cps);
+
     /* avoid calling libxl__xc_domain_restore_done() more than once */
     if (crs->saved_cb) {
         dcs->callback = crs->saved_cb;
@@ -690,13 +705,20 @@ static void colo_setup_checkpoint_devices(libxl__egc *egc,
 
     STATE_AO_GC(crs->ao);
 
-    /* TODO: nic support */
-    cds->device_kind_flags = (1 << LIBXL__DEVICE_KIND_VBD);
+    cds->device_kind_flags = (1 << LIBXL__DEVICE_KIND_VIF) |
+                             (1 << LIBXL__DEVICE_KIND_VBD);
     cds->callback = colo_restore_setup_cds_done;
     cds->ao = ao;
     cds->domid = crs->domid;
     cds->ops = colo_restore_ops;
 
+    crs->cps.ao = ao;
+    if (colo_proxy_setup(&crs->cps)) {
+        LOG(ERROR, "COLO: failed to setup colo proxy for guest with domid %u",
+            cds->domid);
+        goto out;
+    }
+
     if (init_device_subkind(cds))
         goto out;
 
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index d12297d..33a93a1 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -3476,6 +3476,9 @@ struct libxl__colo_restore_state {
 
     /* private, used by qdisk block replication */
     bool qdisk_setuped;
+
+    /* private, used by colo proxy */
+    libxl__colo_proxy_state cps;
 };
 
 struct libxl__domain_create_state {
-- 
1.9.1


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