272    to an underlying bufferevent using a BIO_bufferevent, and one that has the
288 	   If we were set up with an underlying bufferevent, we use the
293 	/* An underlying bufferevent that we're directing our output to.
295 	struct bufferevent *underlying;  member
379 /* Have the base communications channel (either the underlying bufferevent or
385 	if (bev_ssl->underlying) {  in start_reading()
386 		bufferevent_unsuspend_read_(bev_ssl->underlying,  in start_reading()
400 /* Have the base communications channel (either the underlying bufferevent or
407 	if (bev_ssl->underlying) {  in start_writing()
409 			bufferevent_unsuspend_read_(bev_ssl->underlying,  in start_writing()
427 	if (bev_ssl->underlying) {  in stop_reading()
428 		bufferevent_suspend_read_(bev_ssl->underlying,  in stop_reading()
441 	if (bev_ssl->underlying) {  in stop_writing()
442 		bufferevent_unsuspend_read_(bev_ssl->underlying,  in stop_writing()
453 	if (!bev_ssl->underlying)  in set_rbow()
462 	if (!bev_ssl->underlying)  in set_wbor()
621 				/* Can't read until underlying has more data. */  in do_read()
628 				 * underlying is full */  in do_read()
644 		if (bev_ssl->underlying)  in do_read()
699 				/* Can't read until underlying has more data. */  in do_write()
707 				 * underlying is full */  in do_write()
724 		if (bev_ssl->underlying)  in do_write()
781  * Read from the underlying buffer until we block or we hit our high-water
825 		 * by reading too much data from the underlying bufferevent;  in consider_reading()
826 		 * it can potentially cause read looping if the underlying  in consider_reading()
831 		 * potentially not read any more from bev_ssl->underlying  in consider_reading()
835 		if (!n_to_read && bev_ssl->underlying)  in consider_reading()
845 	if (!bev_ssl->underlying) {  in consider_reading()
874 	if (bev_ssl->underlying) {  in consider_writing()
875 		target = bev_ssl->underlying->output;  in consider_writing()
876 		wm = &bev_ssl->underlying->wm_write;  in consider_writing()
892 	if (!bev_ssl->underlying) {  in consider_writing()
973 	if (!bev_ssl->underlying) {  in be_openssl_auto_fd()
985 	if (bev_ssl->underlying) {  in set_open_callbacks()
986 		bufferevent_setcb(bev_ssl->underlying,  in set_open_callbacks()
1086 	if (bev_ssl->underlying) {  in set_handshake_callbacks()
1087 		bufferevent_setcb(bev_ssl->underlying,  in set_handshake_callbacks()
1095 		if (bufferevent_setfd(bev_ssl->underlying, fd))  in set_handshake_callbacks()
1130 	if (!bev_ssl->underlying)  in bufferevent_ssl_renegotiate()
1148 		if (bev_ssl->underlying)  in be_openssl_outbuf_cb()
1167 	if (bev_ssl->underlying) {  in be_openssl_enable()
1191 	if (bev_ssl->underlying) {  in be_openssl_disable()
1206 		if (bev_ssl->underlying) {  in be_openssl_unlink()
1207 			if (BEV_UPCAST(bev_ssl->underlying)->refcnt < 2) {  in be_openssl_unlink()
1211 				bufferevent_free(bev_ssl->underlying);  in be_openssl_unlink()
1214 				// bev_ssl->underlying = NULL;  in be_openssl_unlink()
1218 		if (bev_ssl->underlying) {  in be_openssl_unlink()
1219 			if (bev_ssl->underlying->errorcb == be_openssl_eventcb)  in be_openssl_unlink()
1220 				bufferevent_setcb(bev_ssl->underlying,  in be_openssl_unlink()
1222 			bufferevent_unsuspend_read_(bev_ssl->underlying,  in be_openssl_unlink()
1234 		if (! bev_ssl->underlying) {  in be_openssl_destruct()
1251 	if (bev_ssl->underlying) {  in be_openssl_adj_timeouts()
1305 		if (!bev_ssl->underlying) {  in be_openssl_ctrl()
1311 			if (!(bio = BIO_new_bufferevent(bev_ssl->underlying)))  in be_openssl_ctrl()
1318 		if (bev_ssl->underlying) {  in be_openssl_ctrl()
1319 			data->fd = event_get_fd(&bev_ssl->underlying->ev_read);  in be_openssl_ctrl()
1325 		data->ptr = bev_ssl->underlying;  in be_openssl_ctrl()
1344     struct bufferevent *underlying,  in bufferevent_openssl_new_impl()  argument
1355 	if (underlying != NULL && fd >= 0)  in bufferevent_openssl_new_impl()
1371 	bev_ssl->underlying = underlying;  in bufferevent_openssl_new_impl()
1380 	if (underlying) {  in bufferevent_openssl_new_impl()
1382 		bufferevent_incref_(underlying);  in bufferevent_openssl_new_impl()
1394 	if (underlying) {  in bufferevent_openssl_new_impl()
1395 		bufferevent_setwatermark(underlying, EV_READ, 0, 0);  in bufferevent_openssl_new_impl()
1396 		bufferevent_enable(underlying, EV_READ|EV_WRITE);  in bufferevent_openssl_new_impl()
1398 			bufferevent_suspend_read_(underlying,  in bufferevent_openssl_new_impl()
1415     struct bufferevent *underlying,  in bufferevent_openssl_filter_new()  argument
1423 	if (!underlying)  in bufferevent_openssl_filter_new()
1425 	if (!(bio = BIO_new_bufferevent(underlying)))  in bufferevent_openssl_filter_new()
1431 		base, underlying, -1, ssl, state, options);  in bufferevent_openssl_filter_new()