confd: add support for enabling LLDP agent using ieee802-dot1ab-lldp

This patch adds support for enabling LLDP using the std IEEE 802.1ab
LLDP yang model.  An infix-lldp model is as well to reduce the set of
available parameters to a bare minimum (enabled), for now.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

src/confd/confd-bootstrap.sh

@@ -79,6 +79,8 @@ sysrepoctl -s $SEARCH							\
 	   -i infix-if-type@2023-08-21.yang	-g wheel -p 0660	\
 	   -i infix-interfaces@2023-08-21.yang	-g wheel -p 0660	\
 		-e vlan-filtering					\
+	   -i ieee802-dot1ab-lldp@2022-03-15.yang -g wheel -p 0660	\
+	   -i infix-lldp@2023-08-23.yang	-g wheel -p 0660	\
 	   -i infix-dhcp-client@2023-05-22.yang -g wheel -p 0660	\
 	   -i infix-shell-type@2023-08-21.yang	-g wheel -p 0660	\
 	   -i infix-system@2023-08-15.yang	-g wheel -p 0660	\

src/confd/src/infix-services.c

@@ -16,7 +16,9 @@
 
 
 static const struct srx_module_requirement reqs[] = {
-	{ .dir = YANG_PATH_, .name = "infix-services", .rev = "2023-08-22" },
+	{ .dir = YANG_PATH_, .name = "infix-services",      .rev = "2023-08-22" },
+	{ .dir = YANG_PATH_, .name = "ieee802-dot1ab-lldp", .rev = "2022-03-15" },
+	{ .dir = YANG_PATH_, .name = "infix-lldp",          .rev = "2023-08-23" },
 	{ NULL }
 };
 
@@ -82,6 +84,12 @@ static int ssdp_change(sr_session_ctx_t *session, uint32_t sub_id, const char *m
 	return svc_change(session, event, xpath, "ssdp", "ssdpd");
 }
 
+static int lldp_change(sr_session_ctx_t *session, uint32_t sub_id, const char *module,
+	const char *xpath, sr_event_t event, unsigned request_id, void *_confd)
+{
+	return svc_change(session, event, xpath, "lldp", "lldpd");
+}
+
 int infix_services_init(struct confd *confd)
 {
 	int rc;
@@ -94,6 +102,9 @@ int infix_services_init(struct confd *confd)
 			0, mdns_change, confd, &confd->sub);
 	REGISTER_CHANGE(confd->session, "infix-services", "/infix-services:ssdp",
 			0, ssdp_change, confd, &confd->sub);
+	REGISTER_CHANGE(confd->session, "ieee802-dot1ab-lldp", "/ieee802-dot1ab-lldp:lldp",
+			0, lldp_change, confd, &confd->sub);
+
 	return SR_ERR_OK;
 fail:
 	ERROR("init failed: %s", sr_strerror(rc));