[network.git] / functions.device

#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU General Public License as published by        #
# the Free Software Foundation, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# GNU General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

function devicify() {
	local device=${1}

	assert isset device

	if device_exists ${device}; then
		echo "${device}"
		return ${EXIT_OK}
	fi

	local d
	for d in $(devices_get_all); do
		if [ "$(device_get_address ${d})" = "${device}" ]; then
			echo "${d}"
			return ${EXIT_OK}
		fi
	done

	return ${EXIT_ERROR}
}

function macify() {
	local device=${1}

	assert isset device

	if mac_is_valid ${device}; then
		echo "${device}"
		return ${EXIT_OK}
	fi

	if device_exists ${device}; then
		device_get_address ${device}
		return ${EXIT_OK}
	fi

	return ${EXIT_ERROR}
}

# Check if the device exists
function device_exists() {
	local device=${1}

	# If device name was not found, exit.
	[ -n "${device}" ] || return ${EXIT_ERROR}

	[ -d "${SYS_CLASS_NET}/${device}" ]
}

# Check if the device is up
function device_is_up() {
	local device=${1}

	device_exists ${device} || return ${EXIT_ERROR}

	ip link show ${device} 2>/dev/null | grep -qE "<.*UP.*>"
}

# Check if the device is a bonding device
function device_is_bonding() {
	[ -d "/sys/class/net/${1}/bonding" ]
}

# Check if the device bonded in a bonding device
function device_is_bonded() {
	local device=${1}

	[ -d "${SYS_CLASS_NET}/${device}/master" ]
}

# Check if the device is a bridge
function device_is_bridge() {
	[ -d "/sys/class/net/${1}/bridge" ]
}

function device_is_bridge_attached() {
	local device=${1}

	[ -d "${SYS_CLASS_NET}/${device}/brport" ]
}

# Check if the device is a virtual device
function device_is_virtual() {
	local device=${1}

	[ -e "/proc/net/vlan/${device}" ]
}

# Check if the device has virtual devices
function device_has_virtuals() {
	local device=${1}

	if device_is_virtual ${device}; then
		return 1
	fi

	if [ ! -e "/proc/net/vlan/config" ]; then
		return 1
	fi
	grep -q "${1}$" /proc/net/vlan/config
}

# Check if the device is a ppp device
function device_is_ppp() {
	local device=${1}

	local type=$(__device_get_file ${device} type)

	case "${type}" in
		512|65534)
			return ${EXIT_OK}
			;;
	esac

	return ${EXIT_ERROR}
}

# Check if the device is a loopback device
function device_is_loopback() {
	local device=${1}

	[ "${device}" = "lo" ]
}

# Check if the device is a wireless device
function device_is_wireless() {
	local device=${1}

	[ -d "${SYS_CLASS_NET}/${device}/phy80211" ]
}

# Check if the device is a physical network interface
function device_is_real() {
	local device=${1}

	device_is_loopback ${device} && \
		return ${EXIT_ERROR}

	device_is_bonding ${device} &&  \
		return ${EXIT_ERROR}

	device_is_bridge ${device} && \
		return ${EXIT_ERROR}

	device_is_ppp ${device} && \
		return ${EXIT_ERROR}

	device_is_virtual ${device} && \
		return ${EXIT_ERROR}

	[ "$(__device_get_file ${device} type)" != "1" ] && \
		return ${EXIT_ERROR}

	return ${EXIT_OK}
}

# Get the device type
function device_get_type() {
	local device=${1}

	if device_is_virtual ${device}; then
		echo "vlan"

	elif device_is_bonding ${device}; then
		echo "bonding"

	elif device_is_bridge ${device}; then
		echo "bridge"

	elif device_is_ppp ${device}; then
		echo "ppp"

	elif device_is_loopback ${device}; then
		echo "loopback"

	elif device_is_wireless ${device}; then
		echo "wireless"

	elif device_is_real ${device}; then
		echo "real"

	else
		echo "unknown"
	fi
}

function device_get_status() {
	local device=${1}

	assert isset device

	local status=${STATUS_UNKNOWN}

	if ! device_has_carrier ${device}; then
		status=${STATUS_NOCARRIER}
	elif device_is_up ${device}; then
		status=${STATUS_UP}
	elif device_is_down ${device}; then
		status=${STATUS_DOWN}
	fi

	assert isset status

	echo "${status}"
}

function device_get_address() {
	local device=${1}

	cat ${SYS_CLASS_NET}/${device}/address 2>/dev/null
}

function device_set_address() {
	local device=${1}
	local addr=${2}
	
	if ! device_exists ${device}; then
		error "Device '${device}' does not exist."
		return ${EXIT_ERROR}
	fi

	log INFO "Setting address of '${device}' to '${addr}' - was $(device_get_address ${device})."

	local up
	if device_is_up ${device}; then
		device_set_down ${device}
		up=1
	fi

	ip link set ${device} address ${addr}
	local ret=$?

	if [ "${up}" = "1" ]; then
		device_set_up ${device}
	fi

	if [ "${ret}" != "0" ]; then
		error_log "Could not set address '${addr}' on device '${device}'."
	fi

	return ${ret}
}

function device_get() {
	local device
	local devices

	for device in ${SYS_CLASS_NET}/*; do
		device=$(basename ${device})

		# bonding_masters is no device
		[ "${device}" = "bonding_masters" ] && continue

		devices="${devices} ${device}"
	done

	echo ${devices}
	return ${EXIT_OK}
}

function devices_get_all() {
	device_get
}

# Check if a device has a cable plugged in
function device_has_carrier() {
	local device=${1}
	assert isset device

	[ "$(<${SYS_CLASS_NET}/${device}/carrier)" = "1" ]
}

function device_is_promisc() {
	local device=${1}

	ip link show ${device} | grep -qE "<.*PROMISC.*>"
}

function device_set_promisc() {
	local device=${1}
	local state=${2}

	assert device_exists ${device}
	assert isset state
	assert isoneof state on off

	ip link set ${device} promisc ${state}
}

# Check if the device is free
function device_is_free() {
	! device_is_used $@
}

# Check if the device is used
function device_is_used() {
	local device=${1}

	device_has_virtuals ${device} && \
		return ${EXIT_OK}
	device_is_bonded ${device} && \
		return ${EXIT_OK}
	device_is_bridge_attached ${device} && \
		return ${EXIT_OK}

	return ${EXIT_ERROR}
}

function device_hash() {
	local device=${1}

	# Get mac address of device and remove all colons (:)
	# that will result in a hash.
	device=$(macify ${device})

	echo "${device//:/}"
}

# Give the device a new name
function device_set_name() {
	local source=$1
	local destination=${2}

	# Check if devices exists
	if ! device_exists ${source} || device_exists ${destination}; then
		return 4
	fi

	local up
	if device_is_up ${source}; then
		ip link set ${source} down
		up=1
	fi

	ip link set ${source} name ${destination}

	if [ "${up}" = "1" ]; then
		ip link set ${destination} up
	fi
}

# Set device up
function device_set_up() {
	local device=${1}

	# Silently fail if device was not found
	[ -z "${device}" ] && return ${EXIT_ERROR}

	# Do nothing if device is already up
	device_is_up ${device} && return ${EXIT_OK}

	device_set_parent_up ${device}

	log DEBUG "Setting up device '${device}'"

	ip link set ${device} up
}

function device_set_parent_up() {
	local device=${1}
	local parent

	if device_is_virtual ${device}; then
		parent=$(virtual_get_parent ${device})

		device_is_up ${parent} && return ${EXIT_OK}

		log DEBUG "Setting up parent device '${parent}' of '${device}'"

		device_set_up ${parent}
		return $?
	fi

	return ${EXIT_OK}
}

# Set device down
function device_set_down() {
	local device=${1}
	assert isset device

	local ret=${EXIT_OK}

	if device_is_up ${device}; then
		log DEBUG "Tearing down device '${device}'"

		ip link set ${device} down
		ret=$?
	fi

	device_set_parent_down ${device}

	return ${ret}
}

function device_set_parent_down() {
	local device=${1}
	local parent

	if device_is_virtual ${device}; then
		parent=$(virtual_get_parent ${device})

		device_is_up ${parent} || return ${EXIT_OK}

		if device_is_free ${parent}; then
			log DEBUG "Tearing down parent device '${parent}' of '${device}'"

			device_set_down ${parent}
		fi
	fi
	
	return ${EXIT_OK}
}

function device_get_mtu() {
	local device=${1}

	if ! device_exists ${device}; then
		error "Device '${device}' does not exist."
		return ${EXIT_ERROR}
	fi

	echo $(<${SYS_CLASS_NET}/${device}/mtu)
}

# Set mtu to a device
function device_set_mtu() {
	local device=${1}
	local mtu=${2}

	if ! device_exists ${device}; then
		error "Device '${device}' does not exist."
		return ${EXIT_ERROR}
	fi
	
	local oldmtu=$(device_get_mtu ${device})

	if [ "${oldmtu}" = "${mtu}" ]; then
		# No need to set mtu.
		return ${EXIT_OK}
	fi

	log INFO "Setting mtu of '${device}' to '${mtu}' - was ${oldmtu}."

	local up
	if device_is_up ${device}; then
		device_set_down ${device}
		up=1
	fi

	ip link set ${device} mtu ${mtu}
	local ret=$?

	if [ "${up}" = "1" ]; then
		device_set_up ${device}
	fi

	if [ "${ret}" != "0" ]; then
		error_log "Could not set mtu '${mtu}' on device '${device}'."
	fi

	return ${ret}
}

function device_discover() {
	local device=${1}

	log INFO "Running discovery process on device '${device}'."

	local hook
	for hook in $(hook_zone_get_all); do
		hook_zone_exec ${hook} discover ${device}
	done
}

function device_has_ip() {
	local device=${1}
	local addr=${2}

	assert isset addr
	assert device_exists ${device}

	# IPv6 addresses must be fully imploded
	local protocol=$(ip_detect_protocol ${addr})
	case "${protocol}" in
		ipv6)
			addr=$(ipv6_implode ${addr})
			;;
	esac

	listmatch ${addr} $(device_get_addresses ${device})
}

function device_get_addresses() {
	local device=${1}

	assert device_exists ${device}

	local prot
	local addr
	local line
	ip addr show ${device} | \
		while read prot addr line; do
			[ "${prot:0:4}" = "inet" ] && echo "${addr}"
		done
}

function __device_get_file() {
	local device=${1}
	local file=${2}

	assert isset device
	assert isset file

	cat ${SYS_CLASS_NET}/${device}/${file}
}

function device_get_rx_bytes() {
	local device=${1}

	__device_get_file ${device} statistics/rx_bytes
}

function device_get_tx_bytes() {
	local device=${1}

	__device_get_file ${device} statistics/tx_bytes
}

function device_get_rx_packets() {
	local device=${1}

	__device_get_file ${device} statistics/rx_packets
}

function device_get_tx_packets() {
	local device=${1}

	__device_get_file ${device} statistics/tx_packets
}

function device_get_rx_errors() {
	local device=${1}

	__device_get_file ${device} statistics/rx_errors
}

function device_get_tx_errors() {
	local device=${1}

	__device_get_file ${device} statistics/tx_errors
}
Commit	Line	Data
1848564d MT	1	#!/bin/bash
	2	###############################################################################
	3	# #
	4	# IPFire.org - A linux based firewall #
	5	# Copyright (C) 2010 Michael Tremer & Christian Schmidt #
	6	# #
	7	# This program is free software: you can redistribute it and/or modify #
	8	# it under the terms of the GNU General Public License as published by #
	9	# the Free Software Foundation, either version 3 of the License, or #
	10	# (at your option) any later version. #
	11	# #
	12	# This program is distributed in the hope that it will be useful, #
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of #
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
	15	# GNU General Public License for more details. #
	16	# #
	17	# You should have received a copy of the GNU General Public License #
	18	# along with this program. If not, see <http://www.gnu.org/licenses/>. #
	19	# #
	20	###############################################################################
	21
1b7a1578	22	function devicify() {
1848564d MT	23	local device=${1}
1848564d MT	24
711ffac1 MT	25	assert isset device
711ffac1 MT	26
1848564d MT	27	if device_exists ${device}; then
	28	echo "${device}"
	29	return ${EXIT_OK}
	30	fi
	31
	32	local d
	33	for d in $(devices_get_all); do
	34	if [ "$(device_get_address ${d})" = "${device}" ]; then
	35	echo "${d}"
	36	return ${EXIT_OK}
	37	fi
	38	done
	39
	40	return ${EXIT_ERROR}
	41	}
	42
	43	function macify() {
	44	local device=${1}
	45
711ffac1 MT	46	assert isset device
711ffac1 MT	47
1848564d MT	48	if mac_is_valid ${device}; then
	49	echo "${device}"
	50	return ${EXIT_OK}
	51	fi
	52
	53	if device_exists ${device}; then
	54	device_get_address ${device}
	55	return ${EXIT_OK}
	56	fi
	57
	58	return ${EXIT_ERROR}
	59	}
	60
	61	# Check if the device exists
	62	function device_exists() {
	63	local device=${1}
	64
	65	# If device name was not found, exit.
	66	[ -n "${device}" ] \|\| return ${EXIT_ERROR}
	67
	68	[ -d "${SYS_CLASS_NET}/${device}" ]
	69	}
	70
	71	# Check if the device is up
	72	function device_is_up() {
	73	local device=${1}
	74
	75	device_exists ${device} \|\| return ${EXIT_ERROR}
	76
	77	ip link show ${device} 2>/dev/null \| grep -qE "<.UP.>"
	78	}
	79
	80	# Check if the device is a bonding device
	81	function device_is_bonding() {
	82	[ -d "/sys/class/net/${1}/bonding" ]
	83	}
	84
	85	# Check if the device bonded in a bonding device
	86	function device_is_bonded() {
711ffac1	87	local device=${1}
1848564d	88
711ffac1	89	[ -d "${SYS_CLASS_NET}/${device}/master" ]
1848564d MT	90	}
	91
	92	# Check if the device is a bridge
	93	function device_is_bridge() {
	94	[ -d "/sys/class/net/${1}/bridge" ]
	95	}
	96
81ed640c MT	97	function device_is_bridge_attached() {
	98	local device=${1}
	99
	100	[ -d "${SYS_CLASS_NET}/${device}/brport" ]
	101	}
	102
1848564d MT	103	# Check if the device is a virtual device
	104	function device_is_virtual() {
	105	local device=${1}
	106
	107	[ -e "/proc/net/vlan/${device}" ]
	108	}
	109
	110	# Check if the device has virtual devices
	111	function device_has_virtuals() {
fb02e543 MT	112	local device=${1}
	113
	114	if device_is_virtual ${device}; then
	115	return 1
	116	fi
	117
1848564d MT	118	if [ ! -e "/proc/net/vlan/config" ]; then
	119	return 1
	120	fi
	121	grep -q "${1}$" /proc/net/vlan/config
	122	}
	123
1848564d MT	124	# Check if the device is a ppp device
	125	function device_is_ppp() {
	126	local device=${1}
	127
55b802cc	128	local type=$(__device_get_file ${device} type)
28f0b4ab MT	129
	130	case "${type}" in
	131	512\|65534)
	132	return ${EXIT_OK}
	133	;;
	134	esac
55b802cc MT	135
55b802cc MT	136	return ${EXIT_ERROR}
1848564d MT	137	}
	138
	139	# Check if the device is a loopback device
	140	function device_is_loopback() {
5bb2429a MT	141	local device=${1}
5bb2429a MT	142
1848564d MT	143	[ "${device}" = "lo" ]
	144	}
	145
a508c27e MT	146	# Check if the device is a wireless device
	147	function device_is_wireless() {
	148	local device=${1}
	149
	150	[ -d "${SYS_CLASS_NET}/${device}/phy80211" ]
	151	}
	152
1848564d MT	153	# Check if the device is a physical network interface
	154	function device_is_real() {
	155	local device=${1}
	156
	157	device_is_loopback ${device} && \
	158	return ${EXIT_ERROR}
	159
	160	device_is_bonding ${device} && \
	161	return ${EXIT_ERROR}
	162
	163	device_is_bridge ${device} && \
	164	return ${EXIT_ERROR}
	165
	166	device_is_ppp ${device} && \
	167	return ${EXIT_ERROR}
	168
	169	device_is_virtual ${device} && \
	170	return ${EXIT_ERROR}
	171
419b4cd0 MT	172	[ "$(__device_get_file ${device} type)" != "1" ] && \
	173	return ${EXIT_ERROR}
	174
1848564d MT	175	return ${EXIT_OK}
	176	}
	177
	178	# Get the device type
	179	function device_get_type() {
5bb2429a	180	local device=${1}
1848564d	181
8c6a8966	182	if device_is_virtual ${device}; then
1848564d MT	183	echo "vlan"
	184
	185	elif device_is_bonding ${device}; then
	186	echo "bonding"
	187
	188	elif device_is_bridge ${device}; then
	189	echo "bridge"
	190
	191	elif device_is_ppp ${device}; then
	192	echo "ppp"
	193
	194	elif device_is_loopback ${device}; then
	195	echo "loopback"
	196
a508c27e MT	197	elif device_is_wireless ${device}; then
	198	echo "wireless"
	199
1848564d MT	200	elif device_is_real ${device}; then
	201	echo "real"
	202
	203	else
	204	echo "unknown"
	205	fi
	206	}
	207
711ffac1 MT	208	function device_get_status() {
	209	local device=${1}
	210
	211	assert isset device
	212
	213	local status=${STATUS_UNKNOWN}
	214
	215	if ! device_has_carrier ${device}; then
	216	status=${STATUS_NOCARRIER}
	217	elif device_is_up ${device}; then
	218	status=${STATUS_UP}
	219	elif device_is_down ${device}; then
	220	status=${STATUS_DOWN}
	221	fi
	222
	223	assert isset status
	224
	225	echo "${status}"
	226	}
	227
1848564d MT	228	function device_get_address() {
	229	local device=${1}
	230
	231	cat ${SYS_CLASS_NET}/${device}/address 2>/dev/null
	232	}
	233
	234	function device_set_address() {
1b7a1578 MT	235	local device=${1}
	236	local addr=${2}
	237
	238	if ! device_exists ${device}; then
	239	error "Device '${device}' does not exist."
	240	return ${EXIT_ERROR}
	241	fi
	242
	243	log INFO "Setting address of '${device}' to '${addr}' - was $(device_get_address ${device})."
	244
	245	local up
	246	if device_is_up ${device}; then
	247	device_set_down ${device}
	248	up=1
	249	fi
	250
	251	ip link set ${device} address ${addr}
	252	local ret=$?
	253
	254	if [ "${up}" = "1" ]; then
	255	device_set_up ${device}
	256	fi
	257
	258	if [ "${ret}" != "0" ]; then
	259	error_log "Could not set address '${addr}' on device '${device}'."
	260	fi
	261
	262	return ${ret}
1848564d MT	263	}
1848564d MT	264
711ffac1	265	function device_get() {
2ae0fb8d	266	local device
711ffac1 MT	267	local devices
711ffac1 MT	268
2ae0fb8d MT	269	for device in ${SYS_CLASS_NET}/*; do
2ae0fb8d MT	270	device=$(basename ${device})
711ffac1	271
2ae0fb8d MT	272	# bonding_masters is no device
	273	[ "${device}" = "bonding_masters" ] && continue
	274
	275	devices="${devices} ${device}"
	276	done
711ffac1 MT	277
	278	echo ${devices}
	279	return ${EXIT_OK}
	280	}
	281
1848564d	282	function devices_get_all() {
711ffac1	283	device_get
1848564d MT	284	}
	285
	286	# Check if a device has a cable plugged in
	287	function device_has_carrier() {
5bb2429a MT	288	local device=${1}
	289	assert isset device
	290
1848564d MT	291	[ "$(<${SYS_CLASS_NET}/${device}/carrier)" = "1" ]
	292	}
	293
1e4c26a4 MT	294	function device_is_promisc() {
	295	local device=${1}
	296
	297	ip link show ${device} \| grep -qE "<.PROMISC.>"
	298	}
	299
cf6e4606 MT	300	function device_set_promisc() {
	301	local device=${1}
	302	local state=${2}
	303
	304	assert device_exists ${device}
	305	assert isset state
	306	assert isoneof state on off
	307
	308	ip link set ${device} promisc ${state}
	309	}
	310
1848564d MT	311	# Check if the device is free
1848564d MT	312	function device_is_free() {
81ed640c	313	! device_is_used $@
1848564d MT	314	}
	315
	316	# Check if the device is used
	317	function device_is_used() {
5bb2429a	318	local device=${1}
1848564d	319
fb02e543 MT	320	device_has_virtuals ${device} && \
fb02e543 MT	321	return ${EXIT_OK}
1848564d	322	device_is_bonded ${device} && \
fb02e543	323	return ${EXIT_OK}
81ed640c MT	324	device_is_bridge_attached ${device} && \
81ed640c MT	325	return ${EXIT_OK}
1848564d	326
fb02e543	327	return ${EXIT_ERROR}
1848564d MT	328	}
1848564d MT	329
1b7a1578 MT	330	function device_hash() {
	331	local device=${1}
	332
37e4ec8b MT	333	# Get mac address of device and remove all colons (:)
	334	# that will result in a hash.
	335	device=$(macify ${device})
	336
	337	echo "${device//:/}"
1b7a1578 MT	338	}
	339
	340	# Give the device a new name
	341	function device_set_name() {
1848564d	342	local source=$1
1578dae9	343	local destination=${2}
1848564d MT	344
	345	# Check if devices exists
	346	if ! device_exists ${source} \|\| device_exists ${destination}; then
	347	return 4
	348	fi
	349
	350	local up
	351	if device_is_up ${source}; then
	352	ip link set ${source} down
	353	up=1
	354	fi
	355
	356	ip link set ${source} name ${destination}
	357
	358	if [ "${up}" = "1" ]; then
	359	ip link set ${destination} up
	360	fi
	361	}
	362
1848564d MT	363	# Set device up
1848564d MT	364	function device_set_up() {
5bb2429a	365	local device=${1}
1848564d	366
711ffac1 MT	367	# Silently fail if device was not found
	368	[ -z "${device}" ] && return ${EXIT_ERROR}
	369
1848564d MT	370	# Do nothing if device is already up
	371	device_is_up ${device} && return ${EXIT_OK}
	372
81ed640c MT	373	device_set_parent_up ${device}
	374
	375	log DEBUG "Setting up device '${device}'"
	376
1848564d MT	377	ip link set ${device} up
	378	}
	379
81ed640c MT	380	function device_set_parent_up() {
	381	local device=${1}
	382	local parent
	383
	384	if device_is_virtual ${device}; then
8c6a8966	385	parent=$(virtual_get_parent ${device})
81ed640c MT	386
	387	device_is_up ${parent} && return ${EXIT_OK}
	388
	389	log DEBUG "Setting up parent device '${parent}' of '${device}'"
	390
	391	device_set_up ${parent}
	392	return $?
	393	fi
	394
	395	return ${EXIT_OK}
	396	}
	397
1848564d MT	398	# Set device down
1848564d MT	399	function device_set_down() {
5bb2429a MT	400	local device=${1}
5bb2429a MT	401	assert isset device
1848564d	402
81ed640c MT	403	local ret=${EXIT_OK}
	404
	405	if device_is_up ${device}; then
	406	log DEBUG "Tearing down device '${device}'"
	407
	408	ip link set ${device} down
	409	ret=$?
	410	fi
	411
	412	device_set_parent_down ${device}
1848564d	413
81ed640c MT	414	return ${ret}
	415	}
	416
	417	function device_set_parent_down() {
	418	local device=${1}
	419	local parent
	420
	421	if device_is_virtual ${device}; then
8c6a8966	422	parent=$(virtual_get_parent ${device})
81ed640c MT	423
	424	device_is_up ${parent} \|\| return ${EXIT_OK}
	425
	426	if device_is_free ${parent}; then
	427	log DEBUG "Tearing down parent device '${parent}' of '${device}'"
	428
	429	device_set_down ${parent}
	430	fi
	431	fi
	432
	433	return ${EXIT_OK}
1848564d MT	434	}
1848564d MT	435
1848564d MT	436	function device_get_mtu() {
	437	local device=${1}
	438
	439	if ! device_exists ${device}; then
	440	error "Device '${device}' does not exist."
	441	return ${EXIT_ERROR}
	442	fi
	443
f3e6fe50	444	echo $(<${SYS_CLASS_NET}/${device}/mtu)
1848564d MT	445	}
	446
	447	# Set mtu to a device
	448	function device_set_mtu() {
1b7a1578	449	local device=${1}
1848564d MT	450	local mtu=${2}
1848564d MT	451
1b7a1578 MT	452	if ! device_exists ${device}; then
	453	error "Device '${device}' does not exist."
	454	return ${EXIT_ERROR}
	455	fi
	456
	457	local oldmtu=$(device_get_mtu ${device})
	458
	459	if [ "${oldmtu}" = "${mtu}" ]; then
	460	# No need to set mtu.
	461	return ${EXIT_OK}
	462	fi
	463
	464	log INFO "Setting mtu of '${device}' to '${mtu}' - was ${oldmtu}."
	465
1848564d	466	local up
1b7a1578 MT	467	if device_is_up ${device}; then
1b7a1578 MT	468	device_set_down ${device}
1848564d MT	469	up=1
	470	fi
	471
1b7a1578	472	ip link set ${device} mtu ${mtu}
1848564d MT	473	local ret=$?
	474
	475	if [ "${up}" = "1" ]; then
1b7a1578 MT	476	device_set_up ${device}
	477	fi
	478
	479	if [ "${ret}" != "0" ]; then
	480	error_log "Could not set mtu '${mtu}' on device '${device}'."
1848564d MT	481	fi
	482
	483	return ${ret}
	484	}
	485
	486	function device_discover() {
	487	local device=${1}
	488
1b7a1578 MT	489	log INFO "Running discovery process on device '${device}'."
1b7a1578 MT	490
1848564d	491	local hook
d61a01d4 MT	492	for hook in $(hook_zone_get_all); do
d61a01d4 MT	493	hook_zone_exec ${hook} discover ${device}
1848564d MT	494	done
	495	}
	496
38f61548	497	function device_has_ip() {
1848564d MT	498	local device=${1}
	499	local addr=${2}
	500
38f61548 MT	501	assert isset addr
	502	assert device_exists ${device}
	503
	504	# IPv6 addresses must be fully imploded
	505	local protocol=$(ip_detect_protocol ${addr})
	506	case "${protocol}" in
	507	ipv6)
	508	addr=$(ipv6_implode ${addr})
	509	;;
	510	esac
1848564d	511
38f61548	512	listmatch ${addr} $(device_get_addresses ${device})
1848564d	513	}
4231f419	514
38f61548	515	function device_get_addresses() {
4231f419	516	local device=${1}
4231f419	517
38f61548	518	assert device_exists ${device}
4231f419	519
38f61548 MT	520	local prot
	521	local addr
	522	local line
	523	ip addr show ${device} \| \
	524	while read prot addr line; do
	525	[ "${prot:0:4}" = "inet" ] && echo "${addr}"
	526	done
4231f419	527	}
711ffac1	528
711ffac1 MT	529	function __device_get_file() {
	530	local device=${1}
	531	local file=${2}
	532
	533	assert isset device
	534	assert isset file
	535
	536	cat ${SYS_CLASS_NET}/${device}/${file}
	537	}
	538
	539	function device_get_rx_bytes() {
	540	local device=${1}
	541
	542	__device_get_file ${device} statistics/rx_bytes
	543	}
	544
	545	function device_get_tx_bytes() {
	546	local device=${1}
	547
	548	__device_get_file ${device} statistics/tx_bytes
	549	}
	550
	551	function device_get_rx_packets() {
	552	local device=${1}
	553
	554	__device_get_file ${device} statistics/rx_packets
	555	}
	556
	557	function device_get_tx_packets() {
	558	local device=${1}
	559
	560	__device_get_file ${device} statistics/tx_packets
	561	}
	562
	563	function device_get_rx_errors() {
	564	local device=${1}
	565
	566	__device_get_file ${device} statistics/rx_errors
	567	}
	568
	569	function device_get_tx_errors() {
	570	local device=${1}
	571
	572	__device_get_file ${device} statistics/tx_errors
	573	}