gossipd: don't initialize broadcast interval, make field name explicit.

We initialize it to 30 seconds, but it's *always* overridden by the
gossip_init message (and usually to 60 seconds, so it's doubly
misleading).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

gossipd/gossip_wire.csv

@@ -4,7 +4,7 @@
 
 # Initialize the gossip daemon.
 gossipctl_init,3000
-gossipctl_init,,broadcast_interval,u32
+gossipctl_init,,broadcast_interval_msec,u32
 gossipctl_init,,chain_hash,struct bitcoin_blkid
 gossipctl_init,,id,struct pubkey
 gossipctl_init,,gflen,u16

gossipd/gossipd.c

@@ -80,7 +80,7 @@ struct daemon {
 
 	struct timers timers;
 
-	u32 broadcast_interval;
+	u32 broadcast_interval_msec;
 
 	/* Global features to list in node_announcement. */
 	u8 *globalfeatures;
@@ -929,7 +929,7 @@ static bool maybe_queue_gossip(struct peer *peer)
 	/* Gossip is drained.  Wait for next timer. */
 	peer->gossip_timer
 		= new_reltimer(&peer->daemon->timers, peer,
-			       time_from_msec(peer->daemon->broadcast_interval),
+			       time_from_msec(peer->daemon->broadcast_interval_msec),
 			       wake_gossip_out, peer);
 	return false;
 }
@@ -1818,7 +1818,7 @@ static struct io_plan *gossip_init(struct daemon_conn *master,
 	u32 update_channel_interval;
 
 	if (!fromwire_gossipctl_init(
-		daemon, msg, &daemon->broadcast_interval, &chain_hash,
+		daemon, msg, &daemon->broadcast_interval_msec, &chain_hash,
 		&daemon->id, &daemon->globalfeatures,
 		daemon->rgb,
 		daemon->alias, &update_channel_interval,
@@ -2140,7 +2140,6 @@ int main(int argc, char *argv[])
 	daemon = tal(NULL, struct daemon);
 	list_head_init(&daemon->peers);
 	timers_init(&daemon->timers, time_mono());
-	daemon->broadcast_interval = 30000;
 	daemon->last_announce_timestamp = 0;
 
 	/* stdin == control */

lightningd/gossip_control.c

@@ -161,7 +161,7 @@ void gossip_init(struct lightningd *ld, int connectd_fd)
 		err(1, "Could not subdaemon gossip");
 
 	msg = towire_gossipctl_init(
-	    tmpctx, ld->config.broadcast_interval,
+	    tmpctx, ld->config.broadcast_interval_msec,
 	    &get_chainparams(ld)->genesis_blockhash, &ld->id,
 	    get_offered_globalfeatures(tmpctx),
 	    ld->rgb,

lightningd/lightningd.h

@@ -46,7 +46,7 @@ struct config {
 	u32 commit_time_ms;
 
 	/* How often to broadcast gossip (msec) */
-	u32 broadcast_interval;
+	u32 broadcast_interval_msec;
 
 	/* Channel update interval */
 	u32 channel_update_interval;

lightningd/options.c

@@ -405,7 +405,7 @@ static void dev_register_opts(struct lightningd *ld)
 	opt_register_arg("--dev-debugger=<subdaemon>", opt_subd_debug, NULL,
 			 ld, "Invoke gdb at start of <subdaemon>");
 	opt_register_arg("--dev-broadcast-interval=<ms>", opt_set_uintval,
-			 opt_show_uintval, &ld->config.broadcast_interval,
+			 opt_show_uintval, &ld->config.broadcast_interval_msec,
 			 "Time between gossip broadcasts in milliseconds");
 	opt_register_arg("--dev-disconnect=<filename>", opt_subd_dev_disconnect,
 			 NULL, ld, "File containing disconnection points");
@@ -465,7 +465,7 @@ static const struct config testnet_config = {
 	 *   - SHOULD flush outgoing gossip messages once every 60
 	 *     seconds, independently of the arrival times of the messages.
 	 */
-	.broadcast_interval = 60000,
+	.broadcast_interval_msec = 60000,
 
 	/* Send a keepalive update at least every week, prune every twice that */
 	.channel_update_interval = 1209600/2,
@@ -528,7 +528,7 @@ static const struct config mainnet_config = {
 	 *   - SHOULD flush outgoing gossip messages once every 60
 	 *     seconds, independently of the arrival times of the messages.
 	 */
-	.broadcast_interval = 60000,
+	.broadcast_interval_msec = 60000,
 
 	/* Send a keepalive update at least every week, prune every twice that */
 	.channel_update_interval = 1209600/2,