From: Michael Tremer <michael.tremer@ipfire.org>
Date: Thu, 20 Sep 2018 22:19:02 +0000 (+0100)
Subject: port: ethernet: Allow setting link speed
X-Git-Tag: 010~52
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a0e1ddab115f021f02f84322ffa577fe1423ae1;p=network.git

port: ethernet: Allow setting link speed

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/functions/functions.device b/src/functions/functions.device
index ace40220..7e830ed2 100644
--- a/src/functions/functions.device
+++ b/src/functions/functions.device
@@ -895,6 +895,23 @@ device_get_speed() {
 	print "${speed}"
 }
 
+device_set_speed() {
+	local device="${1}"
+	assert isset device
+
+	local speed="${2}"
+	assert isinteger speed
+
+	if ! cmd_quiet ethtool --change "${device}" speed "${speed}"; then
+		log ERROR "Could not set speed of ${device} to ${speed} MBit/s"
+		return ${EXIT_ERROR}
+	fi
+
+	log DEBUG "Set speed of ${device} to ${speed} MBit/s"
+
+	return ${EXIT_OK}
+}
+
 device_get_duplex() {
 	local device=${1}
 
diff --git a/src/hooks/ports/ethernet b/src/hooks/ports/ethernet
index 4c8eee83..beec3ccd 100644
--- a/src/hooks/ports/ethernet
+++ b/src/hooks/ports/ethernet
@@ -24,10 +24,13 @@
 # Default MTU
 DEFAULT_MTU=1500
 
+# Selectable speeds in MBit/s
+VALID_SPEEDS="10000 1000 100 10"
+
 # DEVICE equals the actual MAC address of the device.
 # If ADDRESS is set, the device will get ADDRESS set for its MAC address.
 
-HOOK_SETTINGS="HOOK ADDRESS DEVICE MTU"
+HOOK_SETTINGS="HOOK ADDRESS DEVICE MTU SPEED"
 
 hook_check_settings() {
 	assert ismac DEVICE
@@ -39,6 +42,10 @@ hook_check_settings() {
 	if isset MTU; then
 		assert mtu_is_valid "ethernet" "${MTU}"
 	fi
+
+	if isset SPEED; then
+		assert isoneof SPEED ${VALID_SPEEDS}
+	fi
 }
 
 hook_parse_cmdline() {
@@ -61,6 +68,16 @@ hook_parse_cmdline() {
 					return ${EXIT_ERROR}
 				fi
 				;;
+
+			--speed=*)
+				SPEED="$(cli_get_val "${1}")"
+
+				if ! isoneof SPEED ${VALID_SPEEDS}; then
+					error "Invalid speed: ${SPEED}"
+					return ${EXIT_ERROR}
+				fi
+				;;
+
 			*)
 				error "Unknown argument: ${1}"
 				return ${EXIT_ERROR}
@@ -95,6 +112,11 @@ hook_up() {
 		device_set_mtu "${port}" "${DEFAULT_MTU}"
 	fi
 
+	# Set speed
+	if isset SPEED; then
+		device_set_speed "${port}" "${SPEED}"
+	fi
+
 	# Bring up the device
 	device_set_up "${port}"