diff options
Diffstat (limited to 'abs/core/dhcpcd/0001-set-MTU-via-sysfs-if-file-is-available.patch')
| -rw-r--r-- | abs/core/dhcpcd/0001-set-MTU-via-sysfs-if-file-is-available.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/abs/core/dhcpcd/0001-set-MTU-via-sysfs-if-file-is-available.patch b/abs/core/dhcpcd/0001-set-MTU-via-sysfs-if-file-is-available.patch new file mode 100644 index 0000000..7e78ecd --- /dev/null +++ b/abs/core/dhcpcd/0001-set-MTU-via-sysfs-if-file-is-available.patch @@ -0,0 +1,61 @@ +From 950c00d1b183796034d227ef47a90eb248d79b72 Mon Sep 17 00:00:00 2001 +From: Dave Reisner <d@falconindy.com> +Date: Tue, 21 Jun 2011 09:32:47 -0400 +Subject: [PATCH] set MTU via sysfs if file is available + +On Linux, a network interface's MTU can be set by writing to +/sys/class/net/$interface/mtu, which removes the dependency on ifconfig. + +Signed-off-by: Dave Reisner <d@falconindy.com> +--- + dhcpcd-hooks/10-mtu | 4 ++-- + dhcpcd-run-hooks.in | 11 +++++++++++ + 2 files changed, 13 insertions(+), 2 deletions(-) + +diff --git a/dhcpcd-hooks/10-mtu b/dhcpcd-hooks/10-mtu +index 639697c..8763930 100644 +--- a/dhcpcd-hooks/10-mtu ++++ b/dhcpcd-hooks/10-mtu +@@ -7,7 +7,7 @@ if [ "$reason" = PREINIT -a -e "$mtu_dir/$interface" ]; then + elif [ -n "$new_interface_mtu" ] && $if_up; then + # The smalled MTU dhcpcd can work with is 576 + if [ "$new_interface_mtu" -ge 576 ]; then +- if ifconfig "$interface" mtu "$new_interface_mtu"; then ++ if set_mtu "$interface" "$new_interface_mtu"; then + syslog info "$interface: MTU set to $new_interface_mtu" + # Save the MTU so we can restore it later + if [ ! -e "$mtu_dir/$interface" ]; then +@@ -21,7 +21,7 @@ elif [ -e "$mtu_dir/$interface" ]; then + # No MTU in this state, so restore the prior MTU + mtu=$(cat "$mtu_dir/$interface") + syslog info "$interface: MTU restored to $mtu" +- ifconfig "$interface" mtu "$mtu" ++ set_mtu "$interface" "$mtu" + rm "$mtu_dir/$interface" + fi + fi +diff --git a/dhcpcd-run-hooks.in b/dhcpcd-run-hooks.in +index 0e60338..843f3ca 100644 +--- a/dhcpcd-run-hooks.in ++++ b/dhcpcd-run-hooks.in +@@ -215,6 +215,17 @@ service_condcommand() + service_exists $1 && service_status $1 && service_cmd $1 $2 + } + ++# Set MTU for an interface ++set_mtu() { ++ local interface=$1 mtu=$2 ++ ++ if [ -e /sys/class/net/$interface/mtu ]; then ++ echo "$mtu" > /sys/class/net/$interface/mtu ++ else ++ ifconfig "$interface" mtu "$mtu" ++ fi ++} ++ + # We source each script into this one so that scripts run earlier can + # remove variables from the environment so later scripts don't see them. + # Thus, the user can create their dhcpcd.enter/exit-hook script to configure +-- +1.7.5.4 + |