[libvirt] [PATCH] qemu: add port check for iscsi host when disk type is network

[Shanzhi Yu]

For network type disk, host port is not checked when source protocol is
iscsi, so the error is not sure when with invalid port. If pass -1 to port
the error  will be
error: Failed to start domain rh6-i
error: An error occurred, but the cause is unknown

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1163553
Signed-off-by: Shanzhi Yu <shyu at redhat.com>
---
 src/qemu/qemu_command.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f674ba9..f806225 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3016,6 +3016,12 @@ qemuBuildNetworkDriveURI(int protocol,
         case VIR_STORAGE_NET_PROTOCOL_FTPS:
         case VIR_STORAGE_NET_PROTOCOL_TFTP:
         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
+            if (STRNEQ_NULLABLE(hosts->port,"3260")) {
+                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                               _("expected port for iscsi host should be 3260"));
+                goto cleanup;
+            }
+
         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
             if (nhosts != 1) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
-- 
1.9.3