xenserver: modify module spec file

Based on feedback from Citrix about building for multiple kernels,
the spec file has been modified to take three arguments on the
command line: kernel_name, kernel_version and kernel_flavor.

The kernel_flavor is either xen or kdump. The kernel_name is the
Name value embedded in the kernel rpm and the kernel_version
is Version-Release values embedded in the kernel rpm. The
xen_version is calculated.

The INSTALL document has been updated to reflect these changes.

Signed-off-by: Sajjad Lateef <[email protected]>
(cherry picked from commit b11e4aa7e92854612a4d139b8a620d036a5d41a2)

INSTALL.XenServer

@@ -23,26 +23,42 @@ Once you have a distribution tarball, copy it into
 /usr/src/redhat/SOURCES inside the VM.  Then execute the following:
 
    VERSION=<Open vSwitch version>
-   XENKERNEL=<Xen kernel version>
+   KERNEL_NAME=<Xen Kernel name>
+   KERNEL_VERSION=<Xen Kernel version>
+   KERNEL_FLAVOR=<Xen Kernel flavor(suffix) >
    cd /tmp
    tar xfz /usr/src/redhat/SOURCES/openvswitch-$VERSION.tar.gz
    rpmbuild \
         -D "openvswitch_version $VERSION" \
-        -D "xen_version $XENKERNEL" \
+        -D "kernel_name $KERNEL_NAME" \
+        -D "kernel_version $KERNEL_VERSION" \
+        -D "kernel_flavor $KERNEL_FLAVOR" \
         -bb openvswitch-$VERSION/xenserver/openvswitch-xen.spec
 
 where:
 
     <openvswitch version> is the version number that appears in the
     name of the Open vSwitch tarball, e.g. 0.90.0.
 
-    <Xen kernel version> is the version number of the Xen kernel,
-    e.g. 2.6.32.12-0.7.1.xs5.6.100.307.170586xen.  This version number
-    appears as the name of a directory in /lib/modules inside the VM.
-    It always ends in "xen".
+    <Xen Kernel name> is the name of the Xen Kernel,
+    e.g. kernel-xen or kernel-NAME-xen. By convention, the name
+    starts with "kernel-" and ends with "-xen".
+    This can be obtained by executing 
+        'rpm -q --queryformat "%{Name}" kernel.*xen'
+    with the "kernel-" stripped out using  sed 's/kernel-//'
+    e.g. kernel-NAME-xen => NAME-xen
+
+    <Xen Kernel version> is the output of:
+    rpm -q --queryformat "%{Version}-%{Release}" kernel.*xen-devel
+    e.g. 2.6.32.12-0.7.1.xs5.6.100.323.170596
+
+    <Xen Kernel flavor (suffix) > is either "xen" or "kdump".
+    The "xen" flavor is the main running kernel flavor and the "kdump" flavor is
+    the crashdump kernel flavor. Commonly, one would specify "xen" here.
 
 Three RPMs will be output into /usr/src/redhat/RPMS/i386, whose names begin
-with "openvswitch", "openvswitch-modules-xen", and "openvswitch-debuginfo".
+with "openvswitch", "openvswitch-modules-xen" (if building for kernel_flavor=xen),
+and "openvswitch-debuginfo".
 
 Installing Open vSwitch for XenServer
 -------------------------------------

xenserver/openvswitch-xen.spec

@@ -8,12 +8,18 @@
 # without warranty of any kind.
 
 # When building, the rpmbuild command line should define
-# openvswitch_version, xen_version, and build_number using -D arguments.
+# openvswitch_version, kernel_name, kernel_version, kernel_flavor,
+# and build_number using -D arguments.
 # for example:
 #
-#    rpmbuild -D "openvswitch_version 0.8.9~1+build123" -D "xen_version 2.6.18-128.1.1.el5.xs5.1.0.483.1000xen" -D "build_number --with-build-number=123" -bb /usr/src/redhat/SPECS/openvswitch-xen.spec
+#    rpmbuild -D "openvswitch_version 1.1.0+build123"
+#      -D "kernel_name  NAME-xen"
+#      -D "kernel_version 2.6.32.12-0.7.1.xs5.6.100.323.170596"
+#      -D "kernel_flavor xen"
+#      -D "build_number --with-build-number=123"
+#      -bb /usr/src/redhat/SPECS/openvswitch-xen.spec
 
-%define version %{openvswitch_version}-%{xen_version}
+%define xen_version %{kernel_version}%{kernel_flavor}
 
 # bump this when breaking compatibility with userspace
 %define module_abi_version 0
@@ -23,7 +29,7 @@
 # kernel version string w/o kernel type
 %define kernel_version %(echo '%{xen_version}' | sed -r 's/[a-z]+$//')
 # build-supplemental-pack.sh requires this naming for kernel module packages
-%define module_package modules%{binsuffix}-%{kernel_version}
+%define module_package modules-%{kernel_flavor}-%{kernel_version}
 
 Name: openvswitch
 Summary: Open vSwitch daemon/database/utilities
@@ -47,8 +53,8 @@ traffic.
 Summary: Open vSwitch kernel module
 Group: System Environment/Kernel
 License: GPLv2
-Provides: %{name}-modules = %{kernel_version}, openvswitch_mod.ko.%{module_abi_version}
-Requires: kernel%{binsuffix} = %{kernel_version}
+Provides: %{name}-modules-%{kernel_flavor} = %{kernel_version}, openvswitch_mod.ko.%{module_abi_version}
+Requires: kernel-%{kernel_name} = %{kernel_version}
 
 %description %{module_package}
 Open vSwitch Linux kernel module compiled against kernel version