Redhat and small system support

Initial 17.10 commit
Final 17.07 cleanup, 17.10 next
Added CentOS grub support, this should complete the CentOS support
Added Centos install/unistall
Added TCP parameters.

Change-Id: I064e3a4118969ac36e62924a6a3f8a98f132ba60
Signed-off-by: John DeNisco <jdenisco@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 122 insertions, 0 deletions

diff --git a/extras/vpp_config/vpplib/VppHugePageUtil.py b/extras/vpp_config/vpplib/VppHugePageUtil.py
new file mode 100644
index 00000000000..43df72a455a
--- /dev/null
+++ b/extras/vpp_config/vpplib/VppHugePageUtil.py
@@ -0,0 +1,122 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""VPP Huge Page Utilities"""
+
+import re
+
+from vpplib.VPPUtil import VPPUtil
+
+# VPP Huge page File
+DEFAULT_VPP_HUGE_PAGE_CONFIG_FILENAME = "/etc/vpp/80-vpp.conf"
+VPP_HUGEPAGE_CONFIG = """
+vm.nr_hugepages={nr_hugepages}
+vm.max_map_count={max_map_count}
+vm.hugetlb_shm_group=0
+kernel.shmmax={shmmax}
+"""
+
+
+class VppHugePageUtil(object):
+    """
+    Huge Page Utilities
+    """
+    def hugepages_dryrun_apply(self):
+        """
+        Apply the huge page configuration
+
+        """
+
+        node = self._node
+        hugepages = node['hugepages']
+
+        vpp_hugepage_config = VPP_HUGEPAGE_CONFIG.format(
+            nr_hugepages=hugepages['total'],
+            max_map_count=hugepages['max_map_count'],
+            shmmax=hugepages['shmax'])
+
+        rootdir = node['rootdir']
+        filename = rootdir + node['hugepages']['hugepage_config_file']
+
+        cmd = 'echo "{0}" | sudo tee {1}'.\
+            format(vpp_hugepage_config, filename)
+        (ret, stdout, stderr) = VPPUtil.exec_command(cmd)
+        if ret != 0:
+            raise RuntimeError('{} failed on node {} {} {}'.
+                               format(cmd, node['host'],
+                                      stdout, stderr))
+
+    def get_actual_huge_pages(self):
+        """
+        Get the current huge page configuration
+
+        :returns the hugepage total, hugepage free, hugepage size,
+        total memory, and total memory free
+        :rtype: tuple
+        """
+
+        # Get the memory information using /proc/meminfo
+        cmd = 'sudo cat /proc/meminfo'
+        (ret, stdout, stderr) = VPPUtil.exec_command(cmd)
+        if ret != 0:
+            raise RuntimeError(
+                '{} failed on node {} {} {}'.format(
+                    cmd, self._node['host'],
+                    stdout, stderr))
+
+        total = re.findall(r'HugePages_Total:\s+\w+', stdout)
+        free = re.findall(r'HugePages_Free:\s+\w+', stdout)
+        size = re.findall(r'Hugepagesize:\s+\w+\s+\w+', stdout)
+        memtotal = re.findall(r'MemTotal:\s+\w+\s+\w+', stdout)
+        memfree = re.findall(r'MemFree:\s+\w+\s+\w+', stdout)
+
+        total = total[0].split(':')[1].lstrip()
+        free = free[0].split(':')[1].lstrip()
+        size = size[0].split(':')[1].lstrip()
+        memtotal = memtotal[0].split(':')[1].lstrip()
+        memfree = memfree[0].split(':')[1].lstrip()
+        return total, free, size, memtotal, memfree
+
+    def show_huge_pages(self):
+        """
+        Print the current huge page configuration
+
+        """
+
+        node = self._node
+        hugepages = node['hugepages']
+        print "  {:30}: {}".format("Total System Memory",
+                                   hugepages['memtotal'])
+        print "  {:30}: {}".format("Total Free Memory",
+                                   hugepages['memfree'])
+        print "  {:30}: {}".format("Actual Huge Page Total",
+                                   hugepages['actual_total'])
+        print "  {:30}: {}".format("Configured Huge Page Total",
+                                   hugepages['total'])
+        print "  {:30}: {}".format("Huge Pages Free", hugepages['free'])
+        print "  {:30}: {}".format("Huge Page Size", hugepages['size'])
+
+    def get_huge_page_config(self):
+        """
+        Returns the huge page config.
+
+        :returns: The map max count and shmmax
+        """
+
+        total = self._node['hugepages']['total']
+        max_map_count = int(total) * 2 + 1024
+        shmmax = int(total) * 2 * 1024 * 1024
+        return max_map_count, shmmax
+
+    def __init__(self, node):
+        self._node = node