is_all_channels: rename to channel_id_is_all

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

common/wire_error.c

@@ -43,15 +43,8 @@ u8 *towire_errorfmt(const tal_t *ctx,
 	return msg;
 }
 
-bool is_all_channels(const struct channel_id *channel_id)
+bool channel_id_is_all(const struct channel_id *channel_id)
 {
-	/* BOLT #1:
-	 *
-	 * A node receiving `error` MUST fail the channel referred to by the
-	 * message, or if `channel_id` is zero, it MUST fail all channels and
-	 * MUST close the connection.  If no existing channel is referred to
-	 * by the message, the receiver MUST ignore the message.
-	 */
 	return memeqzero(channel_id, sizeof(*channel_id));
 }
 
@@ -86,7 +79,7 @@ char *sanitize_error(const tal_t *ctx, const u8 *errmsg,
 	}
 
 	return tal_fmt(ctx, "channel %s: %.*s",
-		       is_all_channels(channel_id)
+		       channel_id_is_all(channel_id)
 		       ? "ALL"
 		       : type_to_string(ctx, struct channel_id, channel_id),
 		       (int)tal_len(data), (char *)data);

common/wire_error.h

@@ -32,10 +32,16 @@ u8 *towire_errorfmtv(const tal_t *ctx,
 		     const char *fmt,
 		     va_list ap);
 
+/* BOLT #1:
+ *
+ * A node receiving `error` MUST fail the channel referred to by the message,
+ * or if `channel_id` is zero, it MUST fail all channels and MUST close the
+ * connection.
+ */
 /**
- * is_all_channels - True if channel_id is all zeroes.
+ * channel_id_is_all - True if channel_id is all zeroes.
  */
-bool is_all_channels(const struct channel_id *channel_id);
+bool channel_id_is_all(const struct channel_id *channel_id);
 
 /**
  * sanitize_error - extract and sanitize contents of WIRE_ERROR.

gossipd/gossip.c

@@ -267,7 +267,7 @@ static bool is_all_channel_error(const u8 *msg)
 	if (!fromwire_error(msg, msg, NULL, &channel_id, &data))
 		return false;
 	tal_free(data);
-	return is_all_channels(&channel_id);
+	return channel_id_is_all(&channel_id);
 }
 
 static struct io_plan *peer_close_after_error(struct io_conn *conn,