rtslib: Add support for cpus_allowed_list attribute

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>

0002-handle-target-kernel-module-new-attribute-cpus_allow.patch

@@ -0,0 +1,82 @@
+From 8d2543c4da62e962661011fea5b19252b9660822 Mon Sep 17 00:00:00 2001
+From: Mingzhe Zou <zoumingzhe@qq.com>
+Date: Fri, 11 Feb 2022 15:49:23 +0800
+Subject: [PATCH] handle target kernel module new attribute cpus_allowed_list
+
+target has been added cpus_allowed_list attribute in sysfs.
+Therefore, the rtslib should handle the new attribute:
+    1. add cpus_allowed_list item in target_names_excludes
+    2. add cpus_allowed_list feature in ISCSIFabricModule
+
+Signed-off-by: Zou Mingzhe mingzhe.zou@easystack.cn
+---
+ rtslib/fabric.py | 32 ++++++++++++++++++++++++++++----
+ 1 file changed, 28 insertions(+), 4 deletions(-)
+
+diff --git a/rtslib/fabric.py b/rtslib/fabric.py
+index 86da3f6..eb8f115 100644
+--- a/rtslib/fabric.py
++++ b/rtslib/fabric.py
+@@ -118,9 +118,15 @@ from .utils import RTSLibError, modprobe, ignored
+ from .target import Target
+ from .utils import _get_auth_attr, _set_auth_attr
+ 
+-version_attributes = set(["lio_version", "version"])
+-discovery_auth_attributes = set(["discovery_auth"])
+-target_names_excludes = version_attributes | discovery_auth_attributes
++excludes_list = [
++    # version_attributes
++    "lio_version", "version",
++    # discovery_auth_attributes
++    "discovery_auth",
++    # cpus_allowed_list_attributes
++    "cpus_allowed_list",
++]
++target_names_excludes = set(excludes_list)
+ 
+ 
+ class _BaseFabricModule(CFSNode):
+@@ -144,7 +150,8 @@ class _BaseFabricModule(CFSNode):
+         self.name = name
+         self.spec_file = "N/A"
+         self._path = "%s/%s" % (self.configfs_dir, self.name)
+-        self.features = ('discovery_auth', 'acls', 'auth', 'nps', 'tpgts')
++        self.features = ('discovery_auth', 'acls', 'auth', 'nps', 'tpgts',
++            'cpus_allowed_list')
+         self.wwn_types = ('free',)
+         self.kernel_module = "%s_target_mod" % self.name
+ 
+@@ -220,6 +227,18 @@ class _BaseFabricModule(CFSNode):
+             raise RTSLibError("Fabric module %s does not implement "
+                               + "the %s feature" % (self.name, feature))
+ 
++    def _get_cpus_allowed_list(self):
++        self._check_self()
++        self._assert_feature('cpus_allowed_list')
++        path = "%s/cpus_allowed_list" % self.path
++        return fread(path)
++
++    def _set_cpus_allowed_list(self, allowed):
++        self._check_self()
++        self._assert_feature('cpus_allowed_list')
++        path = "%s/cpus_allowed_list" % self.path
++        fwrite(path, allowed)
++
+     def clear_discovery_auth_settings(self):
+         self._check_self()
+         self._assert_feature('discovery_auth')
+@@ -267,6 +286,11 @@ class _BaseFabricModule(CFSNode):
+         self._assert_feature('discovery_auth')
+         _set_auth_attr(self, *args, **kwargs)
+ 
++    cpus_allowed_list = \
++            property(_get_cpus_allowed_list,
++                     _set_cpus_allowed_list,
++                     doc="Set or get the cpus_allowed_list attribute.")
++
+     discovery_enable_auth = \
+             property(_get_discovery_enable_auth,
+                      _set_discovery_enable_auth,
+-- 
+2.27.0
+

python-rtslib.spec

@@ -7,10 +7,11 @@ Name:             python-rtslib
 License:          ASL 2.0
 Summary:          API for Linux kernel LIO SCSI target
 Version:          2.1.74
-Release:          6%{?dist}
+Release:          7%{?dist}
 URL:              https://github.com/open-iscsi/%{oname}
 Source:           %{url}/archive/v%{version}/%{oname}-%{version}.tar.gz
 Patch0:           0001-disable-xen_pvscsi.patch
+Patch1:           0002-handle-target-kernel-module-new-attribute-cpus_allow.patch
 BuildArch:        noarch
 %if %{with apidocs}
 BuildRequires:    epydoc
@@ -70,6 +71,7 @@ on system restart.
 %prep
 %setup -q -n %{oname}-%{version}
 %patch0 -p1
+%patch1 -p1
 
 
 %build
@@ -126,6 +128,9 @@ install -m 644 doc/saveconfig.json.5 %{buildroot}%{_mandir}/man5/
 %endif
 
 %changelog
+* Wed Mar 30 2022 Maurizio Lombardi <mlombard@redhat.com> - 2.1.74-7
+- Add support for cpus_allowed_list attribute
+
 * Fri Jan 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 2.1.74-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild