masterd: Peer has to know which direction an eventual channel is

Signed-off-by: Christian Decker <decker.christian@gmail.com>

lightningd/peer_control.c

@@ -2095,6 +2095,8 @@ static bool peer_start_channeld(struct peer *peer,
 	if (peer->ld->config.ignore_fee_limits)
 		log_debug(peer->log, "Ignoring fee limits!");
 
+	peer->direction = pubkey_cmp(&peer->ld->id, &peer->id) > 0;
+
 	initmsg = towire_channel_init(tmpctx,
 				      &get_chainparams(peer->ld)
 				      ->genesis_blockhash,

lightningd/peer_control.h

@@ -100,6 +100,9 @@ struct peer {
 	struct changed_htlc *last_sent_commit;
 
 	struct wallet_channel *channel;
+
+	/* If we open a channel our direction will be this */
+	u8 direction;
 };
 
 static inline bool peer_can_add_htlc(const struct peer *peer)