ifname=<interface>:<MAC>
Assign network device name <interface> (ie eth0) to the NIC with MAC <MAC>.
Note that if you use this option you *must* specify an ifname= argument
for all interfaces used in ip= or fcoe= arguments
---
dracut.8 | 6 +++++
modules.d/40network/ifname-genrules.sh | 21 ++++++++++++++++++
modules.d/40network/install | 2 +
modules.d/40network/net-genrules.sh | 2 +-
modules.d/40network/parse-ifname.sh | 37 ++++++++++++++++++++++++++++++++
modules.d/95fcoe/fcoe-genrules.sh | 2 +-
modules.d/95fcoe/parse-fcoe.sh | 2 +-
7 files changed, 69 insertions(+), 3 deletions(-)
create mode 100755 modules.d/40network/ifname-genrules.sh
create mode 100755 modules.d/40network/parse-ifname.sh
diff --git a/dracut.8 b/dracut.8
index b0547d9..e9bd0d8 100644
--- a/dracut.8
+++ b/dracut.8
@@ -247,6 +247,12 @@ get ip from dhcp server on a specific interface
.B
ip=<client-IP-number>:[<server-id>]:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:{none|off}
explicit network configuration
+.TP
+.B ifname=<interface>:<MAC>
+Assign network device name <interface> (ie eth0) to the NIC with MAC <MAC>.
+Note that if you use this option you \fBmust\fR specify an ifname= argument
+for all interfaces used in ip= or fcoe= arguments
+
.SH Misc
.TP
.B rdblacklist=<drivername>
diff --git a/modules.d/40network/ifname-genrules.sh
b/modules.d/40network/ifname-genrules.sh
new file mode 100755
index 0000000..547f230
--- /dev/null
+++ b/modules.d/40network/ifname-genrules.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# if there are no ifname parameters, just use NAME=KERNEL
+if ! getarg ifname= >/dev/null ; then
+ echo 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="?*",
ATTR{type}=="1", NAME="%k"' \
+ > /etc/udev/rules.d/50-ifname.rules
+ return
+fi
+
+{
+ for p in $(getargs ifname=); do
+ parse_ifname_opts $p
+ printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="%s", ATTR{type}=="1", NAME="%s"\n' "$ifname_mac" "$ifname_if"
+ done
+
+ # Rename non named interfaces out of the way for named ones.
+ for p in $(getargs ifname=); do
+ parse_ifname_opts $p
+ printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="?*", ATTR{type}=="1", NAME!="?*", KERNEL=="%s",
NAME="%%k-renamed"\n' "$ifname_if"
+ done
+} > /etc/udev/rules.d/50-ifname.rules
diff --git a/modules.d/40network/install b/modules.d/40network/install
index 34aed93..ded70da 100755
--- a/modules.d/40network/install
+++ b/modules.d/40network/install
@@ -4,10 +4,12 @@ inst "$moddir/ifup" "/sbin/ifup"
inst "$moddir/netroot" "/sbin/netroot"
inst "$moddir/dhclient-script" "/sbin/dhclient-script"
inst "$moddir/dhclient.conf" "/etc/dhclient.conf"
+inst_hook pre-udev 50 "$moddir/ifname-genrules.sh"
inst_hook pre-udev 60 "$moddir/net-genrules.sh"
inst_hook cmdline 91 "$moddir/dhcp-root.sh"
inst_hook cmdline 99 "$moddir/parse-ip-opts.sh"
inst_hook cmdline 98 "$moddir/parse-bridge.sh"
+inst_hook cmdline 99 "$moddir/parse-ifname.sh"
inst_hook pre-pivot 10 "$moddir/kill-dhclient.sh"
# TODO ifcfg config style is redhat specific, this should probably
diff --git a/modules.d/40network/net-genrules.sh
b/modules.d/40network/net-genrules.sh
index 04e0528..ba369cc 100755
--- a/modules.d/40network/net-genrules.sh
+++ b/modules.d/40network/net-genrules.sh
@@ -29,7 +29,7 @@ fix_bootif() {
# If we have to handle multiple interfaces, handle only them.
elif [ -n "$IFACES" ] ; then
for iface in $IFACES ; do
- printf 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="%s",
RUN+="/sbin/ifup $env{INTERFACE}"\n' "$iface"
+ printf 'ACTION=="add", SUBSYSTEM=="net", NAME=="%s",
RUN+="/sbin/ifup $env{INTERFACE}"\n' "$iface"
done
# Default: We don't know the interface to use, handle all
diff --git a/modules.d/40network/parse-ifname.sh
b/modules.d/40network/parse-ifname.sh
new file mode 100755
index 0000000..aba8475
--- /dev/null
+++ b/modules.d/40network/parse-ifname.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+#
+# Format:
+# ifname=<interface>:<mac>
+#
+# Note letters in the macaddress must be lowercase!
+#
+# Examples:
+# ifname=eth0:4a:3f:4c:04:f8:d7
+#
+# Note when using ifname= to get persistent interface names, you must specify
+# an ifname= argument for each interface used in an ip= or fcoe= argument
+
+# check if there are any ifname parameters
+if ! getarg ifname= >/dev/null ; then
+ return
+fi
+
+parse_ifname_opts() {
+ local IFS=:
+ set $1
+
+ case $# in
+ 7)
+ ifname_if=$1
+ ifname_mac=$2:$3:$4:$5:$6:$7
+ ;;
+ *)
+ die "Invalid arguments for ifname="
+ ;;
+ esac
+}
+
+# Check ifname= lines
+for p in $(getargs ifname=); do
+ parse_ifname_opts $p
+done
diff --git a/modules.d/95fcoe/fcoe-genrules.sh
b/modules.d/95fcoe/fcoe-genrules.sh
index b5d6f07..e9d0157 100755
--- a/modules.d/95fcoe/fcoe-genrules.sh
+++ b/modules.d/95fcoe/fcoe-genrules.sh
@@ -9,6 +9,6 @@
if [ -n "$fcoe_mac" ] ; then
printf 'ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="%s",
RUN+="/sbin/fcoe-up $env{INTERFACE} %s"\n' "$fcoe_mac" "$fcoe_dcb"
else
- printf 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="%s",
RUN+="/sbin/fcoe-up $env{INTERFACE} %s"\n' "$fcoe_interface" "$fcoe_dcb"
+ printf 'ACTION=="add", SUBSYSTEM=="net", NAME=="%s",
RUN+="/sbin/fcoe-up $env{INTERFACE} %s"\n' "$fcoe_interface" "$fcoe_dcb"
fi
} > /etc/udev/rules.d/60-fcoe.rules
diff --git a/modules.d/95fcoe/parse-fcoe.sh b/modules.d/95fcoe/parse-fcoe.sh
index 81ec760..b35680f 100755
--- a/modules.d/95fcoe/parse-fcoe.sh
+++ b/modules.d/95fcoe/parse-fcoe.sh
@@ -11,7 +11,7 @@
#
# Examples:
# fcoe=eth0:nodcb
-# fcoe=4A:3F:4C:04:F8:D7:nodcb
+# fcoe=4a:3f:4c:04:f8:d7:nodcb
[ -z "$fcoe" ] && fcoe=$(getarg fcoe=)
--
1.6.4.2
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