[SRv6] Add SRv6 control plane test case (sonic-net#16516)

Summary: Add a control plane test case to verify that SRv6 static SIDs gets programmed correctly from CONFIG_DB to APPL_DB.

Author: BYGX-wcr

tests/srv6/test_srv6_static_config.py

@@ -0,0 +1,115 @@
+import time
+import pytest
+
+pytestmark = [
+    pytest.mark.topology('t0', 't1')
+]
+
+WAIT_TIME = 5
+
+
+def test_uN_config(duthosts, enum_frontend_dut_hostname, enum_rand_one_asic_index):
+    duthost = duthosts[enum_frontend_dut_hostname]
+    asic_index = enum_rand_one_asic_index
+
+    if duthost.is_multi_asic:
+        cli_options = " -n " + duthost.get_namespace_from_asic_id(asic_index)
+    else:
+        cli_options = ''
+
+    sonic_db_cli = "sonic-db-cli" + cli_options
+    vtysh_shell = "vtysh" + cli_options
+
+    # add a locator configuration entry
+    duthost.command(sonic_db_cli + " CONFIG_DB HSET SRV6_MY_LOCATORS\\|loc1 prefix fcbb:bbbb:1::")
+    # add a uN sid configuration entry
+    duthost.command(sonic_db_cli +
+                    " CONFIG_DB HSET SRV6_MY_SIDS\\|loc1\\|fcbb:bbbb:1::/48 action uN decap_dscp_mode pipe")
+    time.sleep(WAIT_TIME)
+
+    frr_config = duthost.command(vtysh_shell + " -c \"show running-config\"")["stdout"]
+
+    # verify that bgpcfgd generates FRR config correctly
+    assert "locator loc1" in frr_config
+    assert "sid fcbb:bbbb:1::/48 locator loc1 behavior uN" in frr_config
+
+    appl_db_my_sids = duthost.command(sonic_db_cli + " APPL_DB keys SRV6_MY_SID_TABLE*")["stdout"]
+
+    # verify that APPL_DB gets programmed by FRR correctly
+    assert "SRV6_MY_SID_TABLE:32:16:0:0:fcbb:bbbb:1::" in appl_db_my_sids
+    assert "un" == duthost.command(sonic_db_cli +
+                                   " APPL_DB hget SRV6_MY_SID_TABLE:32:16:0:0:fcbb:bbbb:1:: action")["stdout"]
+
+    # delete the configurations
+    duthost.command(sonic_db_cli + " CONFIG_DB DEL SRV6_MY_LOCATORS\\|loc1")
+    duthost.command(sonic_db_cli + " CONFIG_DB DEL SRV6_MY_SIDS\\|loc1\\|fcbb:bbbb:1::/48")
+    time.sleep(WAIT_TIME)
+
+    frr_config = duthost.command(vtysh_shell + " -c \"show running-config\"")["stdout"]
+
+    # verify that bgpcfgd deletes relevant FRR config
+    assert "locator loc1" not in frr_config
+    assert "sid fcbb:bbbb:1::/48 locator loc1 behavior uN" not in frr_config
+
+    appl_db_my_sids = duthost.command(sonic_db_cli + " APPL_DB keys SRV6_MY_SID_TABLE*")["stdout"]
+
+    # verify that the APPL_DB entry gets cleaned correctly
+    assert "SRV6_MY_SID_TABLE:32:16:0:0:fcbb:bbbb:1::" not in appl_db_my_sids
+
+
+def test_uDT46_config(duthosts, enum_frontend_dut_hostname, enum_rand_one_asic_index):
+    duthost = duthosts[enum_frontend_dut_hostname]
+    asic_index = enum_rand_one_asic_index
+
+    if duthost.is_multi_asic:
+        cli_options = " -n " + duthost.get_namespace_from_asic_id(asic_index)
+    else:
+        cli_options = ''
+
+    sonic_db_cli = "sonic-db-cli" + cli_options
+    vtysh_shell = "vtysh" + cli_options
+
+    # add Vrf1 config
+    duthost.command("config vrf add Vrf1")
+    duthost.command("sysctl -w net.vrf.strict_mode=1")
+
+    # add a locator configuration entry
+    duthost.command(sonic_db_cli + " CONFIG_DB HSET SRV6_MY_LOCATORS\\|loc1 prefix fcbb:bbbb:1::")
+    # add a uDT46 sid configuration entry
+    duthost.command(sonic_db_cli + " CONFIG_DB HSET SRV6_MY_SIDS\\|loc1\\|fcbb:bbbb:1:2::/64 \
+                    action uDT46 decap_vrf Vrf1 decap_dscp_mode uniform")
+    time.sleep(WAIT_TIME)
+
+    frr_config = duthost.command(vtysh_shell + " -c \"show running-config\"")["stdout"]
+
+    # verify that bgpcfgd generates FRR config correctly
+    assert "locator loc1" in frr_config
+    assert "sid fcbb:bbbb:1:2::/64 locator loc1 behavior uDT46 vrf Vrf1" in frr_config
+
+    appl_db_my_sids = duthost.command(sonic_db_cli + " APPL_DB keys SRV6_MY_SID_TABLE*")["stdout"]
+
+    # verify that APPL_DB gets programmed by FRR correctly
+    assert "SRV6_MY_SID_TABLE:32:16:16:0:fcbb:bbbb:1:2::" in appl_db_my_sids
+    assert "udt46" == duthost.command(sonic_db_cli +
+                                      " APPL_DB hget SRV6_MY_SID_TABLE:32:16:16:0:fcbb:bbbb:1:2:: action")["stdout"]
+    assert "Vrf1" == duthost.command(sonic_db_cli +
+                                     " APPL_DB hget SRV6_MY_SID_TABLE:32:16:16:0:fcbb:bbbb:1:2:: vrf")["stdout"]
+
+    # delete the configurations
+    duthost.command(sonic_db_cli + " CONFIG_DB DEL SRV6_MY_LOCATORS\\|loc1")
+    duthost.command(sonic_db_cli + " CONFIG_DB DEL SRV6_MY_SIDS\\|loc1\\|fcbb:bbbb:1:2::/64")
+    time.sleep(WAIT_TIME)
+
+    frr_config = duthost.command(vtysh_shell + " -c \"show running-config\"")["stdout"]
+
+    # verify that bgpcfgd deletes relevant FRR config
+    assert "locator loc1" not in frr_config
+    assert "sid fcbb:bbbb:1:2::/64 locator loc1 behavior uDT46 vrf Vrf1" not in frr_config
+
+    appl_db_my_sids = duthost.command(sonic_db_cli + " APPL_DB keys SRV6_MY_SID_TABLE*")["stdout"]
+
+    # verify that the APPL_DB entry gets cleaned correctly
+    assert "SRV6_MY_SID_TABLE:32:16:16:0:fcbb:bbbb:1:2::" not in appl_db_my_sids
+
+    # delete the Vrf config
+    duthost.command("config vrf del Vrf1")