From 60a96cfdb73d086dda5f628dad8ff0a94835656e Mon Sep 17 00:00:00 2001
From: Steven Barth <cyrus@openwrt.org>
Date: Fri, 11 Sep 2015 06:46:42 +0000
Subject: [PATCH] comgt-ncm: Add possibility to choose PDP context type

By setting the option pdptype to IP, IPV6 or IPV4V6 the user can
choose the context type between IPv4, IPv6 and dual stack,
respectively. The default setting is dual stack, except if option
ipv6=0 is specified, in which case IPv4 context is the default.
This allows for an out-of-the-box IPv6 support with modems
utilizing NCM-like protocols.

While we are at it, also add commands for Sierra DirectIP modems
(currently untested), which will allow us to drop the separate
comgt-directip package (once tested and verified working).

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>

SVN-Revision: 46844
---
 package/network/utils/comgt/Makefile       |  2 +-
 package/network/utils/comgt/files/ncm.json | 26 +++++++++++++---
 package/network/utils/comgt/files/ncm.sh   | 36 ++++++++++++++++------
 3 files changed, 50 insertions(+), 14 deletions(-)

diff --git a/package/network/utils/comgt/Makefile b/package/network/utils/comgt/Makefile
index 18085a6593..716bbbf3fa 100644
--- a/package/network/utils/comgt/Makefile
+++ b/package/network/utils/comgt/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=comgt
 PKG_VERSION:=0.32
-PKG_RELEASE:=25
+PKG_RELEASE:=26
 
 PKG_SOURCE:=$(PKG_NAME).$(PKG_VERSION).tgz
 PKG_SOURCE_URL:=@SF/comgt
diff --git a/package/network/utils/comgt/files/ncm.json b/package/network/utils/comgt/files/ncm.json
index ea4f98485f..d1f869974a 100644
--- a/package/network/utils/comgt/files/ncm.json
+++ b/package/network/utils/comgt/files/ncm.json
@@ -6,7 +6,8 @@
 			"ATQ0",
 			"ATV1",
 			"ATE1",
-			"ATS0=0"
+			"ATS0=0",
+			"AT+CGDCONT=1,\\\"${pdptype}\\\",\\\"${apn}\\\""
 		],
 		"modes": {
 			"preferlte": "AT^SYSCFGEX=\\\"030201\\\",3fffffff,2,4,7fffffffffffffff,,",
@@ -25,7 +26,7 @@
 			"AT+CGREG=2",
 			"AT+CFUN=5",
 			"AT+MODESELECT=3",
-			"AT+CGDCONT=1,\\\"IP\\\",\\\"${apn}\\\""
+			"AT+CGDCONT=1,\\\"${pdptype}\\\",\\\"${apn}\\\""
 		],
 		"modes": {
 			"umts": "AT+CHANGEALLPATH=1"
@@ -33,10 +34,27 @@
 		"connect": "AT+CGATT=1",
 		"disconnect": "AT+CGATT=0"
 	},
-	"sony": {
+	"sierra wireless, incorporated": {
 		"initialize": [
 			"AT+CFUN=1",
-			"AT+CGDCONT=1,\\\"IP\\\",\\\"${apn}\\\"",
+			"AT+CGDCONT=1,\\\"${pdptype}\\\",\\\"${apn}\\\"",
+			"AT$QCPDPP=1${auth:+,$auth}${password:+,\\\"$password\\\"}${username:+,\\\"$username\\\"}"
+		],
+		"modes": {
+			"preferlte": "AT!SELRAT=07",
+			"preferumts": "AT!SELRAT=05",
+			"lte": "AT!SELRAT=06",
+			"umts": "AT!SELRAT=01",
+			"gsm": "AT!SELRAT=02",
+			"auto": "AT!SELRAT=00"
+		},
+		"connect": "AT!SCACT=1,1",
+		"disconnect": "AT!SCACT=0,1"
+	},
+	"sony ericsson": {
+		"initialize": [
+			"AT+CFUN=1",
+			"AT+CGDCONT=1,\\\"${pdptype}\\\",\\\"${apn}\\\"",
 			"AT*EIAAUW=1,1,\\\"${username}\\\",\\\"${password}\\\",${auth:-00111}"
 		],
 		"modes": {
diff --git a/package/network/utils/comgt/files/ncm.sh b/package/network/utils/comgt/files/ncm.sh
index ffe5615e07..571cfaa28b 100644
--- a/package/network/utils/comgt/files/ncm.sh
+++ b/package/network/utils/comgt/files/ncm.sh
@@ -17,6 +17,8 @@ proto_ncm_init_config() {
 	proto_config_add_string pincode
 	proto_config_add_string delay
 	proto_config_add_string mode
+	proto_config_add_string pdptype
+	proto_config_add_boolean ipv6
 }
 
 proto_ncm_setup() {
@@ -24,8 +26,22 @@ proto_ncm_setup() {
 
 	local manufacturer initialize setmode connect ifname devname devpath
 
-	local device apn auth username password pincode delay mode
-	json_get_vars device apn auth username password pincode delay mode
+	local device apn auth username password pincode delay mode pdptype ipv6
+	json_get_vars device apn auth username password pincode delay mode pdptype ipv6
+	
+	if [ "$ipv6" = 0 ]; then
+		ipv6=""
+	else
+		ipv6=1
+	fi
+	
+	[ -z "$pdptype" ] && {
+		if [ -n "$ipv6" ]; then
+			pdptype="IPV4V6"
+		else
+			pdptype="IP"
+		fi
+	}
 
 	[ -n "$ctl_device" ] && device=$ctl_device
 
@@ -116,7 +132,7 @@ proto_ncm_setup() {
 		return 1
 	}
 
-	echo "Connected, starting DHCP"
+	echo "Connected, starting DHCP on $ifname"
 	
 	proto_init_update "$ifname" 1
 	proto_send_update "$interface"
@@ -127,12 +143,14 @@ proto_ncm_setup() {
 	json_add_string proto "dhcp"
 	ubus call network add_dynamic "$(json_dump)"
 
-	json_init
-	json_add_string name "${interface}_6"
-	json_add_string ifname "@$interface"
-	json_add_string proto "dhcpv6"
-	json_add_string extendprefix 1
-	ubus call network add_dynamic "$(json_dump)"
+	[ -n "$ipv6" ] && {
+		json_init
+		json_add_string name "${interface}_6"
+		json_add_string ifname "@$interface"
+		json_add_string proto "dhcpv6"
+		json_add_string extendprefix 1
+		ubus call network add_dynamic "$(json_dump)"
+	}
 }
 
 proto_ncm_teardown() {