Initial commit

package/qca/qca-nss-ecm/files/ecm_dump.sh

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+#!/bin/sh
+#
+# Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+ECM_MODULE=${1:-ecm_state}
+MOUNT_ROOT=/dev/ecm
+
+#
+# usage: ecm_dump.sh [module=ecm_db]
+#
+# with no parameters, ecm_dump.sh will attempt to mount the
+# ecm_db state file and cat its contents.
+#
+# example with a parameter: ecm_dump.sh ecm_classifier_default
+#
+# this will cause ecm_dump to attempt to find and mount the state
+# file for the ecm_classifier_default module, and if successful
+# cat the contents.
+#
+
+# this is one of the state files, which happens to be the
+# last module started in ecm
+ECM_STATE=/sys/kernel/debug/ecm/ecm_state/state_dev_major
+
+# tests to see if ECM is up and ready to receive commands.
+# returns 0 if ECM is fully up and ready, else 1
+ecm_is_ready() {
+	if [ ! -e "${ECM_STATE}" ]
+	then
+		return 1
+	fi
+	return 0
+}
+
+#
+# module_state_mount(module_name)
+#      Mounts the state file of the module, if supported
+#
+module_state_mount() {
+	local module_name=$1
+	local mount_dir=$2
+	local state_file="/sys/kernel/debug/ecm/${module_name}/state_dev_major"
+
+	if [ -e "${mount_dir}/${module_name}" ]
+	then
+		# already mounted
+		return 0
+	fi
+
+	#echo "Mount state file for $module_name ..."
+	if [ ! -e "$state_file" ]
+	then
+		#echo "... $module_name does not support state"
+		return 1
+	fi
+
+	local major="`cat $state_file`"
+	#echo "... Mounting state $state_file with major: $major"
+	mknod "${mount_dir}/${module_name}" c $major 0
+}
+
+#
+# main
+#
+ecm_is_ready || {
+	#echo "ECM is not running"
+	exit 1
+}
+
+# all state files are mounted under MOUNT_ROOT, so make sure it exists
+mkdir -p ${MOUNT_ROOT}
+
+#
+# attempt to mount state files for the requested module and cat it
+# if the mount succeeded
+#
+module_state_mount ${ECM_MODULE} ${MOUNT_ROOT} && {
+	cat ${MOUNT_ROOT}/${ECM_MODULE}
+	exit 0
+}
+
+exit 2