batman-adv: new package

This package introduces batman-adv, a kernel module implementation of
the B.A.T.M.A.N. IV and V mesh network routing protocols.

While batman-adv exists in the mainline kernel tree, it can also be
built as an external out-of-tree module. This package adds the
flexibility to chose a more up to date version of the module than exists
in the official tree, and also allows for compilation against kernels
without batman-adv in-tree support.

https://www.open-mesh.org/projects/batman-adv/

Signed-off-by: Christian Stewart <christian@paral.in>
[Thomas:
 - remove "default n", since it's the default
 - fix indentation of Config.in help text
 - license is GPLv2, not just GPL
 - remove variable BATMAN_ADV_MAKE_OPTS, name it directly
   BATMAN_ADV_MODULE_MAKE_OPTS as this is what is expected by the kernel
   module infrastructure.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -1107,6 +1107,7 @@ endmenu
 
 menu "Networking"
 	source "package/agentpp/Config.in"
+	source "package/batman-adv/Config.in"
 	source "package/c-ares/Config.in"
 	source "package/canfestival/Config.in"
 	source "package/cgic/Config.in"

package/batman-adv/Config.in

@@ -0,0 +1,35 @@
+comment "batman-adv needs a Linux kernel to be built"
+	depends on !BR2_LINUX_KERNEL
+
+config BR2_PACKAGE_BATMAN_ADV
+	bool "batman-adv"
+	depends on BR2_LINUX_KERNEL
+	help
+	  batman-adv mesh networking kernel module
+
+	  https://www.open-mesh.org/projects/batman-adv/
+
+if BR2_PACKAGE_BATMAN_ADV
+
+config BR2_PACKAGE_BATMAN_ADV_DEBUG
+	bool "enable debugging"
+	help
+	  Enables B.A.T.M.A.N. debugging.
+
+config BR2_PACKAGE_BATMAN_ADV_NC
+	bool "enable network coding"
+	help
+	  Enables B.A.T.M.A.N. network coding.
+	  Note: this requires promiscuous mode on ALL nodes!
+
+	  https://www.open-mesh.org/projects/batman-adv/wiki/NetworkCoding
+
+config BR2_PACKAGE_BATMAN_ADV_BATMAN_V
+	bool "enable B.A.T.M.A.N. V protocol (experimental)"
+	help
+	  Enables B.A.T.M.A.N. V network protocol.
+	  This is the next-gen protocol and is experimental at this time.
+
+	  https://www.open-mesh.org/projects/batman-adv/wiki/BATMAN_V
+
+endif

package/batman-adv/batman-adv.hash

@@ -0,0 +1,2 @@
+# From https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2016.1.tar.gz.sha1
+sha1 c9ca52c913fbf81aca266695a77359ecdbcc8bd8 batman-adv-2016.1.tar.gz

package/batman-adv/batman-adv.mk

@@ -0,0 +1,35 @@
+################################################################################
+#
+# batman-adv
+#
+################################################################################
+
+BATMAN_ADV_VERSION = 2016.1
+BATMAN_ADV_SITE = https://downloads.open-mesh.org/batman/stable/sources/batman-adv
+BATMAN_ADV_SOURCE = batman-adv-$(BATMAN_ADV_VERSION).tar.gz
+BATMAN_ADV_LICENSE = GPLv2
+
+# Bridge Loop Avoidance, Distributed Arp Table are always enabled
+BATMAN_ADV_CFLAGS = \
+	-I$(@D)/compat-include/ \
+	-include $(@D)/compat.h \
+	-DBATADV_SOURCE_VERSION=\"\\\"$(BATMAN_ADV_VERSION)\\\"\"
+BATMAN_ADV_MODULE_MAKE_OPTS = \
+	KVER=$(LINUX_VERSION_PROBED) \
+	INSTALL_MOD_DIR=updates/net/batman-adv \
+	NOSTDINC_FLAGS="$(BATMAN_ADV_CFLAGS)" \
+	CONFIG_BATMAN_ADV=m \
+	CONFIG_BATMAN_ADV_BATMAN_V=$(BR2_PACKAGE_BATMAN_ADV_BATMAN_V) \
+	CONFIG_BATMAN_ADV_BLA=y \
+	CONFIG_BATMAN_ADV_DAT=y \
+	CONFIG_BATMAN_ADV_DEBUG=$(BR2_PACKAGE_BATMAN_ADV_DEBUG) \
+	CONFIG_BATMAN_ADV_MCAST=y \
+	CONFIG_BATMAN_ADV_NC=$(BR2_PACKAGE_BATMAN_ADV_NC)
+BATMAN_ADV_MODULE_SUBDIRS = net/batman-adv
+
+define BATMAN_ADV_CONFIGURE_CMDS
+	$(BATMAN_ADV_MODULE_MAKE_OPTS) $(@D)/gen-compat-autoconf.sh $(@D)/compat-autoconf.h
+endef
+
+$(eval $(kernel-module))
+$(eval $(generic-package))