[libvirt] [PATCH RFC 14/48] Track if stream is skippable

[Michal Privoznik]

Even though there's no way to make stream skippable right now,
it is going to be soon. We need to track this info so that we
don't send virStreamSkip to a client that did not want it or vice
versa.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 daemon/remote.c              | 2 +-
 daemon/stream.c              | 6 +++++-
 daemon/stream.h              | 3 ++-
 src/remote/remote_driver.c   | 6 ++++--
 src/rpc/gendispatch.pl       | 4 ++--
 src/rpc/virnetclientstream.c | 6 +++++-
 src/rpc/virnetclientstream.h | 3 ++-
 7 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/daemon/remote.c b/daemon/remote.c
index 4e2aff8..6610196 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -5038,7 +5038,7 @@ remoteDispatchDomainMigratePrepareTunnel3Params(virNetServerPtr server ATTRIBUTE
 
     if (!(st = virStreamNew(priv->conn, VIR_STREAM_NONBLOCK)) ||
         !(stream = daemonCreateClientStream(client, st, remoteProgram,
-                                            &msg->header)))
+                                            &msg->header, false)))
         goto cleanup;
 
     if (virDomainMigratePrepareTunnel3Params(priv->conn, st, params, nparams,
diff --git a/daemon/stream.c b/daemon/stream.c
index bd0b5d2..e07a245 100644
--- a/daemon/stream.c
+++ b/daemon/stream.c
@@ -52,6 +52,8 @@ struct daemonClientStream {
     virNetMessagePtr rx;
     bool tx;
 
+    bool skippable;
+
     daemonClientStreamPtr next;
 };
 
@@ -321,7 +323,8 @@ daemonClientStream *
 daemonCreateClientStream(virNetServerClientPtr client,
                          virStreamPtr st,
                          virNetServerProgramPtr prog,
-                         virNetMessageHeaderPtr header)
+                         virNetMessageHeaderPtr header,
+                         bool skippable)
 {
     daemonClientStream *stream;
     daemonClientPrivatePtr priv = virNetServerClientGetPrivateData(client);
@@ -339,6 +342,7 @@ daemonCreateClientStream(virNetServerClientPtr client,
     stream->serial = header->serial;
     stream->filterID = -1;
     stream->st = st;
+    stream->skippable = skippable;
 
     return stream;
 }
diff --git a/daemon/stream.h b/daemon/stream.h
index cf76e71..bf5dc24 100644
--- a/daemon/stream.h
+++ b/daemon/stream.h
@@ -30,7 +30,8 @@ daemonClientStream *
 daemonCreateClientStream(virNetServerClientPtr client,
                          virStreamPtr st,
                          virNetServerProgramPtr prog,
-                         virNetMessageHeaderPtr hdr);
+                         virNetMessageHeaderPtr hdr,
+                         bool seekable);
 
 int daemonFreeClientStream(virNetServerClientPtr client,
                            daemonClientStream *stream);
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index e80ec58..9f084a1 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -5763,7 +5763,8 @@ remoteDomainMigratePrepareTunnel3(virConnectPtr dconn,
     if (!(netst = virNetClientStreamNew(st,
                                         priv->remoteProgram,
                                         REMOTE_PROC_DOMAIN_MIGRATE_PREPARE_TUNNEL3,
-                                        priv->counter)))
+                                        priv->counter,
+                                        false)))
         goto done;
 
     if (virNetClientAddStream(priv->client, netst) < 0) {
@@ -6688,7 +6689,8 @@ remoteDomainMigratePrepareTunnel3Params(virConnectPtr dconn,
     if (!(netst = virNetClientStreamNew(st,
                                         priv->remoteProgram,
                                         REMOTE_PROC_DOMAIN_MIGRATE_PREPARE_TUNNEL3_PARAMS,
-                                        priv->counter)))
+                                        priv->counter,
+                                        false)))
         goto cleanup;
 
     if (virNetClientAddStream(priv->client, netst) < 0) {
diff --git a/src/rpc/gendispatch.pl b/src/rpc/gendispatch.pl
index e608812..9862598 100755
--- a/src/rpc/gendispatch.pl
+++ b/src/rpc/gendispatch.pl
@@ -1024,7 +1024,7 @@ elsif ($mode eq "server") {
             print "    if (!(st = virStreamNew(priv->conn, VIR_STREAM_NONBLOCK)))\n";
             print "        goto cleanup;\n";
             print "\n";
-            print "    if (!(stream = daemonCreateClientStream(client, st, remoteProgram, &msg->header)))\n";
+            print "    if (!(stream = daemonCreateClientStream(client, st, remoteProgram, &msg->header, false)))\n";
             print "        goto cleanup;\n";
             print "\n";
         }
@@ -1738,7 +1738,7 @@ elsif ($mode eq "client") {
 
         if ($call->{streamflag} ne "none") {
             print "\n";
-            print "    if (!(netst = virNetClientStreamNew(st, priv->remoteProgram, $call->{constname}, priv->counter)))\n";
+            print "    if (!(netst = virNetClientStreamNew(st, priv->remoteProgram, $call->{constname}, priv->counter, false)))\n";
             print "        goto done;\n";
             print "\n";
             print "    if (virNetClientAddStream(priv->client, netst) < 0) {\n";
diff --git a/src/rpc/virnetclientstream.c b/src/rpc/virnetclientstream.c
index 8920395..fb83693 100644
--- a/src/rpc/virnetclientstream.c
+++ b/src/rpc/virnetclientstream.c
@@ -54,6 +54,8 @@ struct _virNetClientStream {
     virNetMessagePtr rx;
     bool incomingEOF;
 
+    bool skippable; /* User requested skippable stream */
+
     virNetClientStreamEventCallback cb;
     void *cbOpaque;
     virFreeCallback cbFree;
@@ -138,7 +140,8 @@ virNetClientStreamEventTimer(int timer ATTRIBUTE_UNUSED, void *opaque)
 virNetClientStreamPtr virNetClientStreamNew(virStreamPtr stream,
                                             virNetClientProgramPtr prog,
                                             int proc,
-                                            unsigned serial)
+                                            unsigned serial,
+                                            bool skippable)
 {
     virNetClientStreamPtr st;
 
@@ -152,6 +155,7 @@ virNetClientStreamPtr virNetClientStreamNew(virStreamPtr stream,
     st->prog = prog;
     st->proc = proc;
     st->serial = serial;
+    st->skippable = skippable;
 
     virObjectRef(prog);
 
diff --git a/src/rpc/virnetclientstream.h b/src/rpc/virnetclientstream.h
index e278dab..0a5aafd 100644
--- a/src/rpc/virnetclientstream.h
+++ b/src/rpc/virnetclientstream.h
@@ -35,7 +35,8 @@ typedef void (*virNetClientStreamEventCallback)(virNetClientStreamPtr stream,
 virNetClientStreamPtr virNetClientStreamNew(virStreamPtr stream,
                                             virNetClientProgramPtr prog,
                                             int proc,
-                                            unsigned serial);
+                                            unsigned serial,
+                                            bool seekable);
 
 bool virNetClientStreamRaiseError(virNetClientStreamPtr st);
 
-- 
2.8.4