uqmi: Add support for QMI-based mobile broadband modems

Many of the 4G/LTE and 3G modems utilize the QMI-protocol to control the
modem. At the moment there is no support for them in OpenWrt. This
patch adds support for them in the form of a netifd script and a
control utility. Tested with Huawei E398 and ZTE MF820D (which requires
a delay of ~30 s before responding to QMI commands). I put myself up as
the maintainer, feel free to change this if you desire.

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

SVN-Revision: 40868

package/network/utils/uqmi/Makefile

@@ -0,0 +1,48 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=uqmi
+PKG_VERSION:=2014-05-27
+PKG_RELEASE=$(PKG_SOURCE_VERSION)
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=git://nbd.name/uqmi.git
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=d7a56cad6d6ef3c2a5602fc604e31999eb9e78fa
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
+PKG_MAINTAINER:=Matti Laakso <malaakso@elisanet.fi>
+# PKG_MIRROR_MD5SUM:=
+# CMAKE_INSTALL:=1
+
+PKG_LICENSE:=GPLv2
+PKG_LICENSE_FILES:=
+
+PKG_BUILD_PARALLEL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+define Package/uqmi
+  SECTION:=net
+  CATEGORY:=Network
+  DEPENDS:=+libubox +libblobmsg-json
+  TITLE:=Control utility for mobile broadband modems
+endef
+
+define Package/uqmi/description
+  uqmi is a command line tool for controlling mobile broadband modems using
+  the QMI-protocol.
+endef
+
+TARGET_CFLAGS += \
+	-I$(STAGING_DIR)/usr/include
+
+CMAKE_OPTIONS += \
+	-DDEBUG=1
+
+define Package/uqmi/install
+	$(INSTALL_DIR) $(1)/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/uqmi $(1)/sbin/
+	$(CP) ./files/* $(1)/
+endef
+
+$(eval $(call BuildPackage,uqmi))

package/network/utils/uqmi/files/lib/netifd/proto/qmi.sh

@@ -0,0 +1,137 @@
+#!/bin/sh
+
+. /lib/functions.sh
+. ../netifd-proto.sh
+init_proto "$@"
+
+proto_qmi_init_config() {
+	proto_config_add_string "device:device"
+	proto_config_add_string apn
+	proto_config_add_string auth
+	proto_config_add_string username
+	proto_config_add_string password
+	proto_config_add_string pincode
+	proto_config_add_string delay
+	proto_config_add_string modes
+}
+
+proto_qmi_setup() {
+	local interface="$1"
+
+	local device apn auth username password pincode delay modes cid pdh
+	json_get_vars device apn auth username password pincode delay modes
+
+	[ -n "$device" ] || {
+		logger -p daemon.err -t "qmi[$$]" "No control device specified"
+		proto_notify_error "$interface" NO_DEVICE
+		proto_block_restart "$interface"
+		return 1
+	}
+	[ -c "$device" ] || {
+		logger -p daemon.err -t "qmi[$$]" "The specified control device does not exist"
+		proto_notify_error "$interface" NO_DEVICE
+		proto_block_restart "$interface"
+		return 1
+	}
+
+	[ -n "$delay" ] && sleep "$delay"
+
+	while uqmi -s -d "$device" --get-pin-status | grep '"UIM uninitialized"' > /dev/null; do
+		sleep 1;
+	done
+
+	[ -n "$pincode" ] && {
+		uqmi -s -d "$device" --verify-pin1 "$pincode" || {
+			logger -p daemon.err -t "qmi[$$]" "Unable to verify PIN"
+			proto_notify_error "$interface" PIN_FAILED
+			proto_block_restart "$interface"
+			return 1
+		}
+	}
+
+	[ -n "$apn" ] || {
+		logger -p daemon.err -t "qmi[$$]" "No APN specified"
+		proto_notify_error "$interface" NO_APN
+		proto_block_restart "$interface"
+		return 1
+	}
+
+	logger -p daemon.info -t "qmi[$$]" "Waiting for network registration"
+	while uqmi -s -d "$device" --get-serving-system | grep '"searching"' > /dev/null; do
+		sleep 5;
+	done
+
+	[ -n "$modes" ] && uqmi -s -d "$device" --set-network-modes "$modes"
+
+	logger -p daemon.info -t "qmi[$$]" "Starting network $apn"
+	cid=`uqmi -s -d "$device" --get-client-id wds`
+	[ $? -ne 0 ] && {
+		logger -p daemon.err -t "qmi[$$]" "Unable to obtain client ID"
+		proto_notify_error "$interface" NO_CID
+		proto_block_restart "$interface"
+		return 1
+	}
+	uci_set_state network $interface cid "$cid"
+
+	pdh=`uqmi -s -d "$device" --set-client-id wds,"$cid" --start-network "$apn" \
+	${auth:+--auth-type $auth} \
+	${username:+--username $username} \
+	${password:+--password $password}`
+	[ $? -ne 0 ] && {
+		logger -p daemon.err -t "qmi[$$]" "Unable to connect, check APN and authentication"
+		proto_notify_error "$interface" NO_PDH
+		proto_block_restart "$interface"
+		return 1
+	}
+	uci_set_state network $interface pdh "$pdh"
+
+	if ! uqmi -s -d "$device" --get-data-status | grep '"connected"' > /dev/null; then
+		logger -p daemon.err -t "qmi[$$]" "Connection lost"
+		proto_notify_error "$interface" NOT_CONNECTED
+		proto_block_restart "$interface"
+		return 1
+	fi
+
+	logger -p daemon.info -t "qmi[$$]" "Connected, starting DHCP"
+	proto_init_update "*" 1
+	proto_send_update "$interface"
+
+	json_init
+	json_add_string name "${interface}_dhcp"
+	json_add_string ifname "@$interface"
+	json_add_string proto "dhcp"
+	json_close_object
+	ubus call network add_dynamic "$(json_dump)"
+
+	json_init
+	json_add_string name "${interface}_dhcpv6"
+	json_add_string ifname "@$interface"
+	json_add_string proto "dhcpv6"
+	json_close_object
+	ubus call network add_dynamic "$(json_dump)"
+}
+
+proto_qmi_teardown() {
+	local interface="$1"
+
+	local device
+	json_get_vars device
+	local cid=$(uci_get_state network $interface cid)
+	local pdh=$(uci_get_state network $interface pdh)
+
+	logger -p daemon.info -t "qmi[$$]" "Stopping network"
+	[ -n "$cid" ] && {
+		[ -n "$pdh" ] && {
+			uqmi -s -d "$device" --set-client-id wds,"$cid" --stop-network "$pdh"
+			uci_revert_state network $interface pdh
+		}
+		uqmi -s -d "$device" --set-client-id wds,"$cid" --release-client-id wds
+		uci_revert_state network $interface cid
+	}
+
+	proto_init_update "*" 0
+	proto_send_update "$interface"
+}
+
+add_protocol qmi
+