[swss/cfgmgr] teammgr configure lacp rate (sonic-net#2121)

* add lacp_rate config
* add lacp_rate to teammgr addLag params
* docs for portchannel db config
* add test

Co-authored-by: Anton <antonx.novikau@intel.com>
Co-authored-by: Myron Sosyak <myronx.sosyak@intel.com>

cfgmgr/teammgr.cpp

@@ -252,6 +252,7 @@ void TeamMgr::doLagTask(Consumer &consumer)
         {
             int min_links = 0;
             bool fallback = false;
+            bool fast_rate = false;
             string admin_status = DEFAULT_ADMIN_STATUS_STR;
             string mtu = DEFAULT_MTU_STR;
             string learn_mode;
@@ -293,12 +294,18 @@ void TeamMgr::doLagTask(Consumer &consumer)
                 {
                     tpid = fvValue(i);
                     SWSS_LOG_INFO("Get TPID %s", tpid.c_str());
-                 }
+                }
+                else if (fvField(i) == "fast_rate")
+                {
+                    fast_rate = fvValue(i) == "true";
+                    SWSS_LOG_INFO("Get fast_rate `%s`",
+                                  fast_rate ? "true" : "false");
+                }
             }
 
             if (m_lagList.find(alias) == m_lagList.end())
             {
-                if (addLag(alias, min_links, fallback) == task_need_retry)
+                if (addLag(alias, min_links, fallback, fast_rate) == task_need_retry)
                 {
                     it++;
                     continue;
@@ -553,7 +560,7 @@ bool TeamMgr::setLagLearnMode(const string &alias, const string &learn_mode)
     return true;
 }
 
-task_process_status TeamMgr::addLag(const string &alias, int min_links, bool fallback)
+task_process_status TeamMgr::addLag(const string &alias, int min_links, bool fallback, bool fast_rate)
 {
     SWSS_LOG_ENTER();
 
@@ -610,6 +617,11 @@ task_process_status TeamMgr::addLag(const string &alias, int min_links, bool fal
         conf << ",\"fallback\":true";
     }
 
+    if (fast_rate)
+    {
+        conf << ",\"fast_rate\":true";
+    }
+
     conf << "}}'";
 
     SWSS_LOG_INFO("Port channel %s teamd configuration: %s",
@@ -652,7 +664,7 @@ bool TeamMgr::removeLag(const string &alias)
 }
 
 // Port-channel names are in the pattern of "PortChannel####"
-// 
+//
 // The LACP key could be generated in 3 ways based on the value in config DB:
 //      1. "auto" - LACP key is extracted from the port-channel name and is set to be the number at the end of the port-channel name
 //                  We are adding 1 at the beginning to avoid LACP key collisions between similar LACP keys e.g. PortChannel10 and PortChannel010.

cfgmgr/teammgr.h

@@ -41,7 +41,7 @@ class TeamMgr : public Orch
     void doLagMemberTask(Consumer &consumer);
     void doPortUpdateTask(Consumer &consumer);
 
-    task_process_status addLag(const std::string &alias, int min_links, bool fall_back);
+    task_process_status addLag(const std::string &alias, int min_links, bool fall_back, bool fast_rate);
     bool removeLag(const std::string &alias);
     task_process_status addLagMember(const std::string &lag, const std::string &member);
     bool removeLagMember(const std::string &lag, const std::string &member);

tests/conftest.py

@@ -412,7 +412,7 @@ def create_servers(self):
         for i in range(NUM_PORTS):
             server = VirtualServer(self.ctn_sw.name, self.ctn_sw_pid, i)
             self.servers.append(server)
-            
+
     def reset_dbs(self):
         # DB wrappers are declared here, lazy-loaded in the tests
         self.app_db = None
@@ -1853,7 +1853,8 @@ def dvs_route(request, dvs) -> DVSRoute:
 @pytest.yield_fixture(scope="class")
 def dvs_lag_manager(request, dvs):
     request.cls.dvs_lag = dvs_lag.DVSLag(dvs.get_asic_db(),
-                                         dvs.get_config_db())
+                                         dvs.get_config_db(),
+                                         dvs)
 
 
 @pytest.yield_fixture(scope="class")
@@ -1868,7 +1869,7 @@ def dvs_vlan_manager(request, dvs):
 def dvs_port_manager(request, dvs):
     request.cls.dvs_port = dvs_port.DVSPort(dvs.get_asic_db(),
                                             dvs.get_config_db())
-    
+
 @pytest.yield_fixture(scope="class")
 def dvs_mirror_manager(request, dvs):
     request.cls.dvs_mirror = dvs_mirror.DVSMirror(dvs.get_asic_db(),

tests/dvslib/dvs_lag.py

@@ -1,11 +1,14 @@
+import json
+
 class DVSLag(object):
-    def __init__(self, adb, cdb):
+    def __init__(self, adb, cdb, dvs):
         self.asic_db = adb
         self.config_db = cdb
+        self.dvs = dvs
 
-    def create_port_channel(self, lag_id, admin_status="up", mtu="1500"):
+    def create_port_channel(self, lag_id, admin_status="up", mtu="1500", fast_rate=False):
         lag = "PortChannel{}".format(lag_id)
-        lag_entry = {"admin_status": admin_status, "mtu": mtu}
+        lag_entry = {"admin_status": admin_status, "mtu": mtu, "fast_rate": str(fast_rate).lower()}
         self.config_db.create_entry("PORTCHANNEL", lag, lag_entry)
 
     def remove_port_channel(self, lag_id):
@@ -27,3 +30,12 @@ def get_and_verify_port_channel_members(self, expected_num):
     def get_and_verify_port_channel(self, expected_num):
         return self.asic_db.wait_for_n_keys("ASIC_STATE:SAI_OBJECT_TYPE_LAG", expected_num)
 
+    def dump_portchannel(self, lag_id):
+        lag = "PortChannel{}".format(lag_id)
+        output = self.dvs.runcmd("teamdctl {} state dump".format(lag))[1]
+        port_state_dump = json.loads(output)
+        return port_state_dump
+
+    def get_and_verify_port_channel_fast_rate(self, lag_id, fast_rate):
+        assert self.dump_portchannel(lag_id)["runner"]["fast_rate"] == fast_rate
+

tests/test_portchannel.py

@@ -1,3 +1,4 @@
+import pytest
 import time
 import re
 import json
@@ -6,6 +7,7 @@
 from swsscommon import swsscommon
 
 
+@pytest.mark.usefixtures('dvs_lag_manager')
 class TestPortchannel(object):
     def test_Portchannel(self, dvs, testlog):
 
@@ -89,6 +91,28 @@ def test_Portchannel(self, dvs, testlog):
         lagms = lagmtbl.getKeys()
         assert len(lagms) == 0
 
+    @pytest.mark.parametrize("fast_rate", [False, True])
+    def test_Portchannel_fast_rate(self, dvs, testlog, fast_rate):
+        po_id = "0003"
+        po_member = "Ethernet16"
+
+        # Create PortChannel
+        self.dvs_lag.create_port_channel(po_id, fast_rate=fast_rate)
+        self.dvs_lag.get_and_verify_port_channel(1)
+
+        # Add member to PortChannel
+        self.dvs_lag.create_port_channel_member(po_id, po_member)
+        self.dvs_lag.get_and_verify_port_channel_members(1)
+
+        # test fast rate configuration
+        self.dvs_lag.get_and_verify_port_channel_fast_rate(po_id, fast_rate)
+
+        # remove PortChannel
+        self.dvs_lag.create_port_channel_member(po_id, po_member)
+        self.dvs_lag.remove_port_channel(po_id)
+        self.dvs_lag.get_and_verify_port_channel(0)
+
+
     def test_Portchannel_lacpkey(self, dvs, testlog):
         portchannelNamesAuto = [("PortChannel001", "Ethernet0", 1001),
                             ("PortChannel002", "Ethernet4", 1002),
@@ -108,7 +132,7 @@ def test_Portchannel_lacpkey(self, dvs, testlog):
 
         for portchannel in portchannelNamesAuto:
             tbl.set(portchannel[0], fvs)
-            
+
         fvs_no_lacp_key = swsscommon.FieldValuePairs(
             [("admin_status", "up"), ("mtu", "9100"), ("oper_status", "up")])
         tbl.set(portchannelNames[0][0], fvs_no_lacp_key)