From 83d8a7ed8ba317462943fa1b953d88c6fc33c786 Mon Sep 17 00:00:00 2001
From: Anthony Merlino <anthony@vergeaero.com>
Date: Sun, 18 Jun 2017 10:53:31 -0400
Subject: [PATCH] wireless/ieee802154: Renames Kconfig option, adds option for
 unimplemented receiver priority.

---
 wireless/ieee802154/Kconfig   | 38 ++++++++++++++++++++++++++++-------
 wireless/ieee802154/Make.defs |  2 +-
 2 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/wireless/ieee802154/Kconfig b/wireless/ieee802154/Kconfig
index 7ffe2654f4..107063a43e 100644
--- a/wireless/ieee802154/Kconfig
+++ b/wireless/ieee802154/Kconfig
@@ -21,13 +21,7 @@ config IEEE802154_DEFAULT_EADDR
 	---help---
 		Set the default extended address to be used by MAC networks on init
 
-config IEEE802154_MAC_DEV
-	bool "Character driver for IEEE 802.15.4 MAC layer"
-	default n
-	depends on WIRELESS_IEEE802154
-	---help---
-		Enable the device driver to expose the IEEE 802.15.4 MAC layer
-		access to user space as IOCTLs
+
 
 choice
 	prompt "IEEE 802.15.4 work queue"
@@ -83,6 +77,36 @@ config IEEE802154_IND_IRQRESERVE
 		Non-interrupt logic will also first attempt to allocate from the
 		general, pre-allocated structure pool.  If that fails, it will
 		dynamically allocate the meta data structure with an additional cost in performance.
+		
+config IEEE802154_MACDEV
+	bool "Character driver for IEEE 802.15.4 MAC layer"
+	default n
+	depends on WIRELESS_IEEE802154
+	---help---
+		Enable the device driver to expose the IEEE 802.15.4 MAC layer
+		access to user space as IOCTLs
+
+if IEEE802154_MACDEV
+
+config IEEE802154_MACDEV_RECEIVERPRIORITY
+	int "Priority of frame receiver registerd with the MAC layer"
+	default 0
+	---help---
+		When the MAC layer receives an incoming data frame, it passes the frame
+		to registered receivers, in order of receiver priority, until one of the
+		receivers claim the frame.  
+		
+		An example case would be when 6LoWPAN and the MAC character driver are
+		enabled. Both have receivers registered with the MAC. The 6LoWPAN layer
+		should get assigned a higher priority than the character driver. In this
+		case, the 6LoWPAN receiver will receive the frame first. If the frame is
+		a 6LoWPAN frame, it will claim the frame and the MAC will not pass the
+		frame to any additional receivers. If it does not claim the frame, the
+		MAC layer will call the next highest priority receiver, in this case,
+		the MAC character driver (which should always be lowest priority since
+		it is a "catch-all" type receiver).
+
+endif # IEEE802154_MACDEV
 
 config IEEE802154_NETDEV
 	bool "IEEE802154 6loWPAN Network Device"
diff --git a/wireless/ieee802154/Make.defs b/wireless/ieee802154/Make.defs
index da1b1bc05e..26705a51a7 100644
--- a/wireless/ieee802154/Make.defs
+++ b/wireless/ieee802154/Make.defs
@@ -46,7 +46,7 @@ CSRCS += mac802154_sync.c
 
 # Include wireless devices build support
 
-ifeq ($(CONFIG_IEEE802154_MAC_DEV),y)
+ifeq ($(CONFIG_IEEE802154_MACDEV),y)
 CSRCS += mac802154_device.c
 endif