T7938: VPP: Rewrite sFlow implementation

Execute commands for vpp sflow with API calls. Use values for polling interval and sampling rate from 'system sflow'. Add op-mode command

2 files changed, 52 insertions, 0 deletions

diff --git a/python/vyos/vpp/sflow/__init__.py b/python/vyos/vpp/sflow/__init__.py
new file mode 100644
index 000000000..8d27be75a
--- /dev/null
+++ b/python/vyos/vpp/sflow/__init__.py
@@ -0,0 +1,3 @@
+from .sflow import SFlow
+
+__all__ = ['SFlow']
diff --git a/python/vyos/vpp/sflow/sflow.py b/python/vyos/vpp/sflow/sflow.py
new file mode 100644
index 000000000..7677d32b3
--- /dev/null
+++ b/python/vyos/vpp/sflow/sflow.py
@@ -0,0 +1,49 @@
+#
+# Copyright (C) VyOS Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+from vyos.vpp import VPPControl
+
+
+class SFlow:
+    def __init__(self):
+        self.vpp = VPPControl()
+
+    def enable_sflow(self, interface):
+        """Enable sFlow on interface"""
+        self.vpp.api.sflow_enable_disable(
+            enable_disable=True,
+            sw_if_index=self.vpp.get_sw_if_index(interface),
+        )
+
+    def disable_sflow(self, interface):
+        """Disable sFlow on interface"""
+        self.vpp.api.sflow_enable_disable(
+            enable_disable=False,
+            sw_if_index=self.vpp.get_sw_if_index(interface),
+        )
+
+    def set_sampling_rate(self, sample_rate):
+        """Set sFlow sampling-rate"""
+        self.vpp.api.sflow_sampling_rate(sampling_N=sample_rate)
+
+    def set_polling_interval(self, interval):
+        """Set sFlow polling interval"""
+        self.vpp.api.sflow_polling_interval(polling_S=interval)
+
+    def set_header_bytes(self, header_bytes):
+        """Set sFlow maximum header length in bytes"""
+        self.vpp.api.sflow_header_bytes(header_B=header_bytes)