staticd: Add no form for static-sids command (backport #18263)

staticd/static_nb.h

@@ -172,6 +172,10 @@ int routing_control_plane_protocols_name_validate(
 	"frr-staticd:staticd/segment-routing/srv6"
 
 /* srv6/static-sids */
+#define FRR_STATIC_SRV6_STATIC_SIDS_XPATH                                                          \
+	FRR_STATIC_SRV6_INFO_KEY_XPATH                                                             \
+	"/static-sids"
+
 #define FRR_STATIC_SRV6_SID_KEY_XPATH                                                              \
 	FRR_STATIC_SRV6_INFO_KEY_XPATH                                                             \
 	"/static-sids/"                                                                            \

staticd/static_vty.c

@@ -1174,10 +1174,22 @@ DEFUN_YANG_NOSH (no_static_srv6, no_static_srv6_cmd,
 	return nb_cli_apply_changes(vty, "%s", xpath);
 }
 
-DEFUN_NOSH (static_srv6_sids, static_srv6_sids_cmd,
-      "static-sids",
+DEFPY_YANG_NOSH (static_srv6_sids, static_srv6_sids_cmd,
+      "[no] static-sids",
+	  NO_STR
       "Segment Routing SRv6 SIDs\n")
 {
+	char xpath[XPATH_MAXLEN];
+
+	if (no) {
+		snprintf(xpath, sizeof(xpath), FRR_STATIC_SRV6_STATIC_SIDS_XPATH,
+			 "frr-staticd:staticd", "staticd", VRF_DEFAULT_NAME);
+
+		nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+
+		return nb_cli_apply_changes(vty, "%s", xpath);
+	}
+
 	VTY_PUSH_CONTEXT_NULL(SRV6_SIDS_NODE);
 	return CMD_SUCCESS;
 }

tests/topotests/static_srv6_sids/expected_srv6_sids_delete_all.json

@@ -0,0 +1 @@
+{}

tests/topotests/static_srv6_sids/test_static_srv6_sids.py

@@ -172,6 +172,85 @@ def check_srv6_static_sids(router, expected_file):
     check_srv6_static_sids(router, "expected_srv6_sids.json")
 
 
+def test_srv6_static_sids_sid_delete_all():
+    """
+    Remove all static SIDs and verify they get removed
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+    router = tgen.gears["r1"]
+
+    def _check_srv6_static_sids(router, expected_route_file):
+        logger.info("checking zebra srv6 static sids")
+        output = json.loads(router.vtysh_cmd("show ipv6 route static json"))
+        expected = open_json_file("{}/{}".format(CWD, expected_route_file))
+        return topotest.json_cmp(output, expected, exact=True)
+
+    def check_srv6_static_sids(router, expected_file):
+        func = functools.partial(_check_srv6_static_sids, router, expected_file)
+        _, result = topotest.run_and_expect(func, None, count=15, wait=1)
+        assert result is None, "Failed"
+
+    router.vtysh_cmd(
+        """
+        configure terminal
+         segment-routing
+          srv6
+           no static-sids
+        """
+    )
+
+    # FOR DEVELOPER:
+    # If you want to stop some specific line and start interactive shell,
+    # please use tgen.mininet_cli() to start it.
+
+    logger.info("Test for srv6 sids configuration")
+    check_srv6_static_sids(router, "expected_srv6_sids_delete_all.json")
+
+
+def test_srv6_static_sids_sid_readd_all():
+    """
+    Re-add the static SIDs and verify the routing table
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+    router = tgen.gears["r1"]
+
+    def _check_srv6_static_sids(router, expected_route_file):
+        logger.info("checking zebra srv6 static sids")
+        output = json.loads(router.vtysh_cmd("show ipv6 route static json"))
+        expected = open_json_file("{}/{}".format(CWD, expected_route_file))
+        return topotest.json_cmp(output, expected)
+
+    def check_srv6_static_sids(router, expected_file):
+        func = functools.partial(_check_srv6_static_sids, router, expected_file)
+        _, result = topotest.run_and_expect(func, None, count=15, wait=1)
+        assert result is None, "Failed"
+
+    router.vtysh_cmd(
+        """
+        configure terminal
+         segment-routing
+          srv6
+           static-sids
+            sid fcbb:bbbb:1::/48 locator MAIN behavior uN
+            sid fcbb:bbbb:1:fe10::/64 locator MAIN behavior uDT4 vrf Vrf10
+            sid fcbb:bbbb:1:fe20::/64 locator MAIN behavior uDT6 vrf Vrf20
+            sid fcbb:bbbb:1:fe30::/64 locator MAIN behavior uDT46 vrf Vrf30
+            sid fcbb:bbbb:1:fe40::/64 locator MAIN behavior uA interface sr0 nexthop 2001::2
+        """
+    )
+
+    # FOR DEVELOPER:
+    # If you want to stop some specific line and start interactive shell,
+    # please use tgen.mininet_cli() to start it.
+
+    logger.info("Test for srv6 sids configuration")
+    check_srv6_static_sids(router, "expected_srv6_sids.json")
+
+
 if __name__ == "__main__":
     args = ["-s"] + sys.argv[1:]
     sys.exit(pytest.main(args))

vtysh/vtysh.c

@@ -1708,6 +1708,14 @@ DEFUNSH(VTYSH_MGMTD, srv6_sids, srv6_sids_cmd,
 	return CMD_SUCCESS;
 }
 
+DEFUNSH(VTYSH_MGMTD, no_srv6_sids, no_srv6_sids_cmd,
+	"no static-sids",
+	NO_STR
+	"Segment-Routing SRv6 SIDs configuration\n")
+{
+	return CMD_SUCCESS;
+}
+
 DEFUNSH(VTYSH_ZEBRA, srv6_locators, srv6_locators_cmd,
 	"locators",
 	"Segment-Routing SRv6 locators configuration\n")
@@ -5543,6 +5551,7 @@ void vtysh_init_vty(void)
 	install_element(SRV6_NODE, &vtysh_end_all_cmd);
 	install_element(SRV6_NODE, &srv6_encap_cmd);
 	install_element(SRV6_NODE, &srv6_sids_cmd);
+	install_element(SRV6_NODE, &no_srv6_sids_cmd);
 
 	install_element(SRV6_SIDS_NODE, &exit_srv6_sids_config_cmd);
 	install_element(SRV6_SIDS_NODE, &vtysh_end_all_cmd);