[people/ms/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 ${device} type)
	if [ "${type}" = "512" ]; then
		return ${EXIT_OK}
	fi

	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 MT	128	local type=$(__device_get_file ${device} type)
	129	if [ "${type}" = "512" ]; then
	130	return ${EXIT_OK}
	131	fi
	132
	133	return ${EXIT_ERROR}
1848564d MT	134	}
	135
	136	# Check if the device is a loopback device
	137	function device_is_loopback() {
5bb2429a MT	138	local device=${1}
5bb2429a MT	139
1848564d MT	140	[ "${device}" = "lo" ]
	141	}
	142
a508c27e MT	143	# Check if the device is a wireless device
	144	function device_is_wireless() {
	145	local device=${1}
	146
	147	[ -d "${SYS_CLASS_NET}/${device}/phy80211" ]
	148	}
	149
1848564d MT	150	# Check if the device is a physical network interface
	151	function device_is_real() {
	152	local device=${1}
	153
	154	device_is_loopback ${device} && \
	155	return ${EXIT_ERROR}
	156
	157	device_is_bonding ${device} && \
	158	return ${EXIT_ERROR}
	159
	160	device_is_bridge ${device} && \
	161	return ${EXIT_ERROR}
	162
	163	device_is_ppp ${device} && \
	164	return ${EXIT_ERROR}
	165
	166	device_is_virtual ${device} && \
	167	return ${EXIT_ERROR}
	168
419b4cd0 MT	169	[ "$(__device_get_file ${device} type)" != "1" ] && \
	170	return ${EXIT_ERROR}
	171
1848564d MT	172	return ${EXIT_OK}
	173	}
	174
	175	# Get the device type
	176	function device_get_type() {
5bb2429a	177	local device=${1}
1848564d	178
8c6a8966	179	if device_is_virtual ${device}; then
1848564d MT	180	echo "vlan"
	181
	182	elif device_is_bonding ${device}; then
	183	echo "bonding"
	184
	185	elif device_is_bridge ${device}; then
	186	echo "bridge"
	187
	188	elif device_is_ppp ${device}; then
	189	echo "ppp"
	190
	191	elif device_is_loopback ${device}; then
	192	echo "loopback"
	193
a508c27e MT	194	elif device_is_wireless ${device}; then
	195	echo "wireless"
	196
1848564d MT	197	elif device_is_real ${device}; then
	198	echo "real"
	199
	200	else
	201	echo "unknown"
	202	fi
	203	}
	204
711ffac1 MT	205	function device_get_status() {
	206	local device=${1}
	207
	208	assert isset device
	209
	210	local status=${STATUS_UNKNOWN}
	211
	212	if ! device_has_carrier ${device}; then
	213	status=${STATUS_NOCARRIER}
	214	elif device_is_up ${device}; then
	215	status=${STATUS_UP}
	216	elif device_is_down ${device}; then
	217	status=${STATUS_DOWN}
	218	fi
	219
	220	assert isset status
	221
	222	echo "${status}"
	223	}
	224
1848564d MT	225	function device_get_address() {
	226	local device=${1}
	227
	228	cat ${SYS_CLASS_NET}/${device}/address 2>/dev/null
	229	}
	230
	231	function device_set_address() {
1b7a1578 MT	232	local device=${1}
	233	local addr=${2}
	234
	235	if ! device_exists ${device}; then
	236	error "Device '${device}' does not exist."
	237	return ${EXIT_ERROR}
	238	fi
	239
	240	log INFO "Setting address of '${device}' to '${addr}' - was $(device_get_address ${device})."
	241
	242	local up
	243	if device_is_up ${device}; then
	244	device_set_down ${device}
	245	up=1
	246	fi
	247
	248	ip link set ${device} address ${addr}
	249	local ret=$?
	250
	251	if [ "${up}" = "1" ]; then
	252	device_set_up ${device}
	253	fi
	254
	255	if [ "${ret}" != "0" ]; then
	256	error_log "Could not set address '${addr}' on device '${device}'."
	257	fi
	258
	259	return ${ret}
1848564d MT	260	}
1848564d MT	261
711ffac1	262	function device_get() {
2ae0fb8d	263	local device
711ffac1 MT	264	local devices
711ffac1 MT	265
2ae0fb8d MT	266	for device in ${SYS_CLASS_NET}/*; do
2ae0fb8d MT	267	device=$(basename ${device})
711ffac1	268
2ae0fb8d MT	269	# bonding_masters is no device
	270	[ "${device}" = "bonding_masters" ] && continue
	271
	272	devices="${devices} ${device}"
	273	done
711ffac1 MT	274
	275	echo ${devices}
	276	return ${EXIT_OK}
	277	}
	278
1848564d	279	function devices_get_all() {
711ffac1	280	device_get
1848564d MT	281	}
	282
	283	# Check if a device has a cable plugged in
	284	function device_has_carrier() {
5bb2429a MT	285	local device=${1}
	286	assert isset device
	287
1848564d MT	288	[ "$(<${SYS_CLASS_NET}/${device}/carrier)" = "1" ]
	289	}
	290
1e4c26a4 MT	291	function device_is_promisc() {
	292	local device=${1}
	293
	294	ip link show ${device} \| grep -qE "<.PROMISC.>"
	295	}
	296
cf6e4606 MT	297	function device_set_promisc() {
	298	local device=${1}
	299	local state=${2}
	300
	301	assert device_exists ${device}
	302	assert isset state
	303	assert isoneof state on off
	304
	305	ip link set ${device} promisc ${state}
	306	}
	307
1848564d MT	308	# Check if the device is free
1848564d MT	309	function device_is_free() {
81ed640c	310	! device_is_used $@
1848564d MT	311	}
	312
	313	# Check if the device is used
	314	function device_is_used() {
5bb2429a	315	local device=${1}
1848564d	316
fb02e543 MT	317	device_has_virtuals ${device} && \
fb02e543 MT	318	return ${EXIT_OK}
1848564d	319	device_is_bonded ${device} && \
fb02e543	320	return ${EXIT_OK}
81ed640c MT	321	device_is_bridge_attached ${device} && \
81ed640c MT	322	return ${EXIT_OK}
1848564d	323
fb02e543	324	return ${EXIT_ERROR}
1848564d MT	325	}
1848564d MT	326
1b7a1578 MT	327	function device_hash() {
	328	local device=${1}
	329
37e4ec8b MT	330	# Get mac address of device and remove all colons (:)
	331	# that will result in a hash.
	332	device=$(macify ${device})
	333
	334	echo "${device//:/}"
1b7a1578 MT	335	}
	336
	337	# Give the device a new name
	338	function device_set_name() {
1848564d	339	local source=$1
1578dae9	340	local destination=${2}
1848564d MT	341
	342	# Check if devices exists
	343	if ! device_exists ${source} \|\| device_exists ${destination}; then
	344	return 4
	345	fi
	346
	347	local up
	348	if device_is_up ${source}; then
	349	ip link set ${source} down
	350	up=1
	351	fi
	352
	353	ip link set ${source} name ${destination}
	354
	355	if [ "${up}" = "1" ]; then
	356	ip link set ${destination} up
	357	fi
	358	}
	359
1848564d MT	360	# Set device up
1848564d MT	361	function device_set_up() {
5bb2429a	362	local device=${1}
1848564d	363
711ffac1 MT	364	# Silently fail if device was not found
	365	[ -z "${device}" ] && return ${EXIT_ERROR}
	366
1848564d MT	367	# Do nothing if device is already up
	368	device_is_up ${device} && return ${EXIT_OK}
	369
81ed640c MT	370	device_set_parent_up ${device}
	371
	372	log DEBUG "Setting up device '${device}'"
	373
1848564d MT	374	ip link set ${device} up
	375	}
	376
81ed640c MT	377	function device_set_parent_up() {
	378	local device=${1}
	379	local parent
	380
	381	if device_is_virtual ${device}; then
8c6a8966	382	parent=$(virtual_get_parent ${device})
81ed640c MT	383
	384	device_is_up ${parent} && return ${EXIT_OK}
	385
	386	log DEBUG "Setting up parent device '${parent}' of '${device}'"
	387
	388	device_set_up ${parent}
	389	return $?
	390	fi
	391
	392	return ${EXIT_OK}
	393	}
	394
1848564d MT	395	# Set device down
1848564d MT	396	function device_set_down() {
5bb2429a MT	397	local device=${1}
5bb2429a MT	398	assert isset device
1848564d	399
81ed640c MT	400	local ret=${EXIT_OK}
	401
	402	if device_is_up ${device}; then
	403	log DEBUG "Tearing down device '${device}'"
	404
	405	ip link set ${device} down
	406	ret=$?
	407	fi
	408
	409	device_set_parent_down ${device}
1848564d	410
81ed640c MT	411	return ${ret}
	412	}
	413
	414	function device_set_parent_down() {
	415	local device=${1}
	416	local parent
	417
	418	if device_is_virtual ${device}; then
8c6a8966	419	parent=$(virtual_get_parent ${device})
81ed640c MT	420
	421	device_is_up ${parent} \|\| return ${EXIT_OK}
	422
	423	if device_is_free ${parent}; then
	424	log DEBUG "Tearing down parent device '${parent}' of '${device}'"
	425
	426	device_set_down ${parent}
	427	fi
	428	fi
	429
	430	return ${EXIT_OK}
1848564d MT	431	}
1848564d MT	432
1848564d MT	433	function device_get_mtu() {
	434	local device=${1}
	435
	436	if ! device_exists ${device}; then
	437	error "Device '${device}' does not exist."
	438	return ${EXIT_ERROR}
	439	fi
	440
f3e6fe50	441	echo $(<${SYS_CLASS_NET}/${device}/mtu)
1848564d MT	442	}
	443
	444	# Set mtu to a device
	445	function device_set_mtu() {
1b7a1578	446	local device=${1}
1848564d MT	447	local mtu=${2}
1848564d MT	448
1b7a1578 MT	449	if ! device_exists ${device}; then
	450	error "Device '${device}' does not exist."
	451	return ${EXIT_ERROR}
	452	fi
	453
	454	local oldmtu=$(device_get_mtu ${device})
	455
	456	if [ "${oldmtu}" = "${mtu}" ]; then
	457	# No need to set mtu.
	458	return ${EXIT_OK}
	459	fi
	460
	461	log INFO "Setting mtu of '${device}' to '${mtu}' - was ${oldmtu}."
	462
1848564d	463	local up
1b7a1578 MT	464	if device_is_up ${device}; then
1b7a1578 MT	465	device_set_down ${device}
1848564d MT	466	up=1
	467	fi
	468
1b7a1578	469	ip link set ${device} mtu ${mtu}
1848564d MT	470	local ret=$?
	471
	472	if [ "${up}" = "1" ]; then
1b7a1578 MT	473	device_set_up ${device}
	474	fi
	475
	476	if [ "${ret}" != "0" ]; then
	477	error_log "Could not set mtu '${mtu}' on device '${device}'."
1848564d MT	478	fi
	479
	480	return ${ret}
	481	}
	482
	483	function device_discover() {
	484	local device=${1}
	485
1b7a1578 MT	486	log INFO "Running discovery process on device '${device}'."
1b7a1578 MT	487
1848564d	488	local hook
d61a01d4 MT	489	for hook in $(hook_zone_get_all); do
d61a01d4 MT	490	hook_zone_exec ${hook} discover ${device}
1848564d MT	491	done
	492	}
	493
38f61548	494	function device_has_ip() {
1848564d MT	495	local device=${1}
	496	local addr=${2}
	497
38f61548 MT	498	assert isset addr
	499	assert device_exists ${device}
	500
	501	# IPv6 addresses must be fully imploded
	502	local protocol=$(ip_detect_protocol ${addr})
	503	case "${protocol}" in
	504	ipv6)
	505	addr=$(ipv6_implode ${addr})
	506	;;
	507	esac
1848564d	508
38f61548	509	listmatch ${addr} $(device_get_addresses ${device})
1848564d	510	}
4231f419	511
38f61548	512	function device_get_addresses() {
4231f419	513	local device=${1}
4231f419	514
38f61548	515	assert device_exists ${device}
4231f419	516
38f61548 MT	517	local prot
	518	local addr
	519	local line
	520	ip addr show ${device} \| \
	521	while read prot addr line; do
	522	[ "${prot:0:4}" = "inet" ] && echo "${addr}"
	523	done
4231f419	524	}
711ffac1	525
711ffac1 MT	526	function __device_get_file() {
	527	local device=${1}
	528	local file=${2}
	529
	530	assert isset device
	531	assert isset file
	532
	533	cat ${SYS_CLASS_NET}/${device}/${file}
	534	}
	535
	536	function device_get_rx_bytes() {
	537	local device=${1}
	538
	539	__device_get_file ${device} statistics/rx_bytes
	540	}
	541
	542	function device_get_tx_bytes() {
	543	local device=${1}
	544
	545	__device_get_file ${device} statistics/tx_bytes
	546	}
	547
	548	function device_get_rx_packets() {
	549	local device=${1}
	550
	551	__device_get_file ${device} statistics/rx_packets
	552	}
	553
	554	function device_get_tx_packets() {
	555	local device=${1}
	556
	557	__device_get_file ${device} statistics/tx_packets
	558	}
	559
	560	function device_get_rx_errors() {
	561	local device=${1}
	562
	563	__device_get_file ${device} statistics/rx_errors
	564	}
	565
	566	function device_get_tx_errors() {
	567	local device=${1}
	568
	569	__device_get_file ${device} statistics/tx_errors
	570	}