drbd: Four new configuration settings for resync speed control

To reasonably control resync speed over drbd-proxy connections,
drbd has to measure the current delay of packets transmitted over
the (possibly congested) data socket vs the meta-data socket.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h
index de055c0..ce77a74 100644
--- a/include/linux/drbd_nl.h
+++ b/include/linux/drbd_nl.h
@@ -78,6 +78,10 @@
 	NL_INTEGER(	30,	T_MAY_IGNORE,	rate)
 	NL_INTEGER(	31,	T_MAY_IGNORE,	after)
 	NL_INTEGER(	32,	T_MAY_IGNORE,	al_extents)
+	NL_INTEGER(     71,	T_MAY_IGNORE,	dp_volume)
+	NL_INTEGER(     72,	T_MAY_IGNORE,	dp_interval)
+	NL_INTEGER(     73,	T_MAY_IGNORE,	throttle_th)
+	NL_INTEGER(     74,	T_MAY_IGNORE,	hold_off_th)
 	NL_STRING(      52,     T_MAY_IGNORE,   verify_alg,     SHARED_SECRET_MAX)
 	NL_STRING(      51,     T_MAY_IGNORE,   cpu_mask,       32)
 	NL_STRING(	64,	T_MAY_IGNORE,	csums_alg,	SHARED_SECRET_MAX)