isisd: Add a hook when writing interface config

Signed-off-by: Christian Franke <chris@opensourcerouting.org>

5 files changed, 19 insertions, 3 deletions

diff --git a/isisd/isis_circuit.c b/isisd/isis_circuit.c
index 58c6dfa368..313564d95b 100644
--- a/isisd/isis_circuit.c
+++ b/isisd/isis_circuit.c
@@ -924,6 +924,10 @@ void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty,
 	return;
 }
 
+DEFINE_HOOK(isis_circuit_config_write,
+	    (struct isis_circuit *circuit, struct vty *vty),
+	    (circuit, vty))
+
 int isis_interface_config_write(struct vty *vty)
 {
 	struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT);
@@ -1138,7 +1142,7 @@ int isis_interface_config_write(struct vty *vty)
 					circuit->passwd.passwd);
 				write++;
 			}
-			write += circuit_write_mt_settings(circuit, vty);
+			write += hook_call(isis_circuit_config_write, circuit, vty);
 		}
 		vty_endframe(vty, "!\n");
 	}
diff --git a/isisd/isis_circuit.h b/isisd/isis_circuit.h
index 02abbb49ad..e83424a4ad 100644
--- a/isisd/isis_circuit.h
+++ b/isisd/isis_circuit.h
@@ -193,4 +193,8 @@ ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
 int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
 				bool enabled);
 
+DECLARE_HOOK(isis_circuit_config_write,
+	    (struct isis_circuit *circuit, struct vty *vty),
+	    (circuit, vty))
+
 #endif /* _ZEBRA_ISIS_CIRCUIT_H */
diff --git a/isisd/isis_main.c b/isisd/isis_main.c
index 474184fbd3..7956ddeaf1 100644
--- a/isisd/isis_main.c
+++ b/isisd/isis_main.c
@@ -57,6 +57,7 @@
 #include "isisd/isis_vty_common.h"
 #include "isisd/isis_bfd.h"
 #include "isisd/isis_lsp.h"
+#include "isisd/isis_mt.h"
 
 /* Default configuration file name */
 #define ISISD_DEFAULT_CONFIG "isisd.conf"
@@ -216,6 +217,7 @@ int main(int argc, char **argv, char **envp)
 	isis_route_map_init();
 	isis_mpls_te_init();
 	lsp_init();
+	mt_init();
 
 	/* create the global 'isis' instance */
 	isis_new(1);
diff --git a/isisd/isis_mt.c b/isisd/isis_mt.c
index e0227f4656..1b7fa5a46e 100644
--- a/isisd/isis_mt.c
+++ b/isisd/isis_mt.c
@@ -302,7 +302,7 @@ circuit_get_mt_setting(struct isis_circuit *circuit, uint16_t mtid)
 	return setting;
 }
 
-int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty)
+static int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty)
 {
 	int written = 0;
 	struct listnode *node;
@@ -551,3 +551,9 @@ void tlvs_add_mt_p2p(struct isis_tlvs *tlvs, struct isis_circuit *circuit,
 	tlvs_add_mt_set(circuit->area, tlvs, adj->mt_count, adj->mt_set, id,
 			metric, subtlvs, subtlv_len);
 }
+
+void mt_init(void)
+{
+	hook_register(isis_circuit_config_write,
+		      circuit_write_mt_settings);
+}
diff --git a/isisd/isis_mt.h b/isisd/isis_mt.h
index 8c57d24afa..515b63f50f 100644
--- a/isisd/isis_mt.h
+++ b/isisd/isis_mt.h
@@ -109,7 +109,6 @@ void circuit_mt_init(struct isis_circuit *circuit);
 void circuit_mt_finish(struct isis_circuit *circuit);
 struct isis_circuit_mt_setting *
 circuit_get_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
-int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty);
 struct isis_circuit_mt_setting **
 circuit_mt_settings(struct isis_circuit *circuit, unsigned int *mt_count);
 bool tlvs_to_adj_mt_set(struct isis_tlvs *tlvs, bool v4_usable, bool v6_usable,
@@ -122,4 +121,5 @@ void tlvs_add_mt_bcast(struct isis_tlvs *tlvs, struct isis_circuit *circuit,
 void tlvs_add_mt_p2p(struct isis_tlvs *tlvs, struct isis_circuit *circuit,
 		     uint8_t *id, uint32_t metric, uint8_t *subtlvs,
 		     uint8_t subtlv_len);
+void mt_init(void);
 #endif