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1021-udev-re-add-persistent-net-rules.patch
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File 1021-udev-re-add-persistent-net-rules.patch of Package systemd
Index: systemd-210/src/udev/rule_generator/75-persistent-net-generator.rules =================================================================== --- /dev/null +++ systemd-210/src/udev/rule_generator/75-persistent-net-generator.rules @@ -0,0 +1,105 @@ +# do not edit this file, it will be overwritten on update + +# these rules generate rules for persistent network device naming +# +# variables used to communicate: +# MATCHADDR MAC address used for the match +# MATCHID bus_id used for the match +# MATCHDRV driver name used for the match +# MATCHIFTYPE interface type match +# COMMENT comment to add to the generated rule +# INTERFACE_NAME requested name supplied by external tool +# INTERFACE_NEW new interface name returned by rule writer + +ACTION!="add", GOTO="persistent_net_generator_end" +SUBSYSTEM!="net", GOTO="persistent_net_generator_end" + +# ignore the interface if a name has already been set +NAME=="?*", GOTO="persistent_net_generator_end" + +# device name whitelist +KERNEL!="eth*|ath*|wlan*[0-9]|msh*|ra*|sta*|ctc*|lcs*|hsi*", GOTO="persistent_net_generator_end" + +IMPORT{cmdline}="net.ifnames" +ENV{net.ifnames}=="1", GOTO="persistent_net_generator_end" + +# ignore Xen virtual interfaces +SUBSYSTEMS=="xen", GOTO="persistent_net_generator_end" + +# read MAC address +ENV{MATCHADDR}="$attr{address}" + +# match interface type +ENV{MATCHIFTYPE}="$attr{type}" + +# ignore KVM virtual interfaces +ENV{MATCHADDR}=="52:54:00:*", GOTO="persistent_net_generator_end" +# ignore VMWare virtual interfaces +ENV{MATCHADDR}=="00:0c:29:*|00:50:56:*", GOTO="persistent_net_generator_end" +# ignore Hyper-V virtual interfaces +ENV{MATCHADDR}=="00:15:5d:*", GOTO="persistent_net_generator_end" + +# These vendors are known to violate the local MAC address assignment scheme +# Interlan, DEC (UNIBUS or QBUS), Apollo, Cisco, Racal-Datacom +ENV{MATCHADDR}=="02:07:01:*", GOTO="globally_administered_whitelist" +# 3Com +ENV{MATCHADDR}=="02:60:60:*", GOTO="globally_administered_whitelist" +# 3Com IBM PC; Imagen; Valid; Cisco; Apple +ENV{MATCHADDR}=="02:60:8c:*", GOTO="globally_administered_whitelist" +# Intel +ENV{MATCHADDR}=="02:a0:c9:*", GOTO="globally_administered_whitelist" +# Olivetti +ENV{MATCHADDR}=="02:aa:3c:*", GOTO="globally_administered_whitelist" +# CMC Masscomp; Silicon Graphics; Prime EXL +ENV{MATCHADDR}=="02:cf:1f:*", GOTO="globally_administered_whitelist" +# Prominet Corporation Gigabit Ethernet Switch +ENV{MATCHADDR}=="02:e0:3b:*", GOTO="globally_administered_whitelist" +# BTI (Bus-Tech, Inc.) IBM Mainframes +ENV{MATCHADDR}=="02:e6:d3:*", GOTO="globally_administered_whitelist" +# Realtek +ENV{MATCHADDR}=="52:54:00:*", GOTO="globally_administered_whitelist" +# Novell 2000 +ENV{MATCHADDR}=="52:54:4c:*", GOTO="globally_administered_whitelist" +# Realtec +ENV{MATCHADDR}=="52:54:ab:*", GOTO="globally_administered_whitelist" +# Kingston Technologies +ENV{MATCHADDR}=="e2:0c:0f:*", GOTO="globally_administered_whitelist" +# Xensource +ENV{MATCHADDR}=="00:16:3e:*", GOTO="globally_administered_whitelist" + +# match interface dev_id +ATTR{dev_id}=="?*", ENV{MATCHDEVID}="$attr{dev_id}" + +# do not use "locally administered" MAC address +ENV{MATCHADDR}=="?[2367abef]:*", ENV{MATCHADDR}="" + +# do not use empty address +ENV{MATCHADDR}=="00:00:00:00:00:00", ENV{MATCHADDR}="" + +LABEL="globally_administered_whitelist" + +# build comment line for generated rule: +SUBSYSTEMS=="pci", ENV{COMMENT}="PCI device $attr{vendor}:$attr{device} ($driver)" +SUBSYSTEMS=="usb", ATTRS{idVendor}=="?*", ENV{COMMENT}="USB device 0x$attr{idVendor}:0x$attr{idProduct} ($driver)" +SUBSYSTEMS=="pcmcia", ENV{COMMENT}="PCMCIA device $attr{card_id}:$attr{manf_id} ($driver)" +SUBSYSTEMS=="ieee1394", ENV{COMMENT}="Firewire device $attr{host_id})" + +# ibmveth likes to use "locally administered" MAC addresses +DRIVERS=="ibmveth", ENV{MATCHADDR}="$attr{address}", ENV{COMMENT}="ibmveth ($id)" + +# S/390 uses id matches only, do not use MAC address match +SUBSYSTEMS=="ccwgroup", ENV{COMMENT}="S/390 $driver device at $id", ENV{MATCHID}="$id", ENV{MATCHDRV}="$driver", ENV{MATCHADDR}="" + +# see if we got enough data to create a rule +ENV{MATCHADDR}=="", ENV{MATCHID}=="", ENV{INTERFACE_NAME}=="", GOTO="persistent_net_generator_end" + +# default comment +ENV{COMMENT}=="", ENV{COMMENT}="net device ($attr{driver})" + +# write rule +DRIVERS=="?*", IMPORT{program}="write_net_rules" + +# rename interface if needed +ENV{INTERFACE_NEW}=="?*", NAME="$env{INTERFACE_NEW}" + +LABEL="persistent_net_generator_end" Index: systemd-210/src/udev/rule_generator/rule_generator.functions =================================================================== --- /dev/null +++ systemd-210/src/udev/rule_generator/rule_generator.functions @@ -0,0 +1,113 @@ +# functions used by the udev rule generator + +# Copyright (C) 2006 Marco d'Itri <md@Linux.IT> + +# 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 2 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/>. + +PATH='/usr/bin:/bin:/usr/sbin:/sbin' + +# Read a single line from file $1 in the $DEVPATH directory. +# The function must not return an error even if the file does not exist. +sysread() { + local file="$1" + [ -e "/sys$DEVPATH/$file" ] || return 0 + local value + read value < "/sys$DEVPATH/$file" || return 0 + echo "$value" +} + +sysreadlink() { + local file="$1" + [ -e "/sys$DEVPATH/$file" ] || return 0 + readlink -f /sys$DEVPATH/$file 2> /dev/null || true +} + +# Return true if a directory is writeable. +writeable() { + if ln -s test-link $1/.is-writeable 2> /dev/null; then + rm -f $1/.is-writeable + return 0 + else + return 1 + fi +} + +# Create a lock file for the current rules file. +lock_rules_file() { + RUNDIR="/run/udev" + [ -e "$RUNDIR" ] || return 0 + + RULES_LOCK="$RUNDIR/.lock-${RULES_FILE##*/}" + + retry=30 + while ! mkdir $RULES_LOCK 2> /dev/null; do + if [ $retry -eq 0 ]; then + echo "Cannot lock $RULES_FILE!" >&2 + exit 2 + fi + sleep 1 + retry=$(($retry - 1)) + done +} + +unlock_rules_file() { + [ "$RULES_LOCK" ] || return 0 + rmdir $RULES_LOCK || true +} + +# Choose the real rules file if it is writeable or a temporary file if not. +# Both files should be checked later when looking for existing rules. +choose_rules_file() { + RUNDIR="/run/udev" + local tmp_rules_file="$RUNDIR/tmp-rules--${RULES_FILE##*/}" + [ -e "$RULES_FILE" -o -e "$tmp_rules_file" ] || PRINT_HEADER=1 + + if writeable ${RULES_FILE%/*}; then + RO_RULES_FILE='/dev/null' + else + RO_RULES_FILE=$RULES_FILE + RULES_FILE=$tmp_rules_file + fi +} + +# Return the name of the first free device. +raw_find_next_available() { + local links="$1" + + local basename=${links%%[ 0-9]*} + local max=-1 + for name in $links; do + local num=${name#$basename} + [ "$num" ] || num=0 + [ $num -gt $max ] && max=$num + done + + local max=$(($max + 1)) + # "name0" actually is just "name" + [ $max -eq 0 ] && return + echo "$max" +} + +# Find all rules matching a key (with action) and a pattern. +find_all_rules() { + local key="$1" + local linkre="$2" + local match="$3" + + local search='.*[[:space:],]'"$key"'"('"$linkre"')".*' + echo $(sed -n -r -e 's/^#.*//' -e "${match}s/${search}/\1/p" \ + $RO_RULES_FILE \ + $([ -e $RULES_FILE ] && echo $RULES_FILE) \ + 2>/dev/null) +} Index: systemd-210/src/udev/rule_generator/write_net_rules =================================================================== --- /dev/null +++ systemd-210/src/udev/rule_generator/write_net_rules @@ -0,0 +1,141 @@ +#!/bin/sh -e + +# This script is run to create persistent network device naming rules +# based on properties of the device. +# If the interface needs to be renamed, INTERFACE_NEW=<name> will be printed +# on stdout to allow udev to IMPORT it. + +# variables used to communicate: +# MATCHADDR MAC address used for the match +# MATCHID bus_id used for the match +# MATCHDEVID dev_id used for the match +# MATCHDRV driver name used for the match +# MATCHIFTYPE interface type match +# COMMENT comment to add to the generated rule +# INTERFACE_NAME requested name supplied by external tool +# INTERFACE_NEW new interface name returned by rule writer + +# Copyright (C) 2006 Marco d'Itri <md@Linux.IT> +# Copyright (C) 2007 Kay Sievers <kay.sievers@vrfy.org> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +# debug, if UDEV_LOG=<debug> +if [ -n "$UDEV_LOG" ]; then + if [ "$UDEV_LOG" -ge 7 ]; then + set -x + fi +fi + +RULES_FILE='/etc/udev/rules.d/70-persistent-net.rules' + +. /usr/lib/udev/rule_generator.functions + +interface_name_taken() { + local value="$(find_all_rules 'NAME=' $INTERFACE)" + if [ "$value" ]; then + return 0 + else + return 1 + fi +} + +find_next_available() { + raw_find_next_available "$(find_all_rules 'NAME=' "$1")" +} + +write_rule() { + local match="$1" + local name="$2" + local comment="$3" + + { + if [ "$PRINT_HEADER" ]; then + PRINT_HEADER= + echo "# This file was automatically generated by the $0" + echo "# program, run by the persistent-net-generator.rules rules file." + echo "#" + echo "# You can modify it, as long as you keep each rule on a single" + echo "# line, and change only the value of the NAME= key." + fi + + echo "" + [ "$comment" ] && echo "# $comment" + echo "SUBSYSTEM==\"net\", ACTION==\"add\"$match, NAME=\"$name\"" + } >> $RULES_FILE +} + +if [ -z "$INTERFACE" ]; then + echo "missing \$INTERFACE" >&2 + exit 1 +fi + +# Prevent concurrent processes from modifying the file at the same time. +lock_rules_file + +# Check if the rules file is writeable. +choose_rules_file + +# the DRIVERS key is needed to not match bridges and VLAN sub-interfaces +if [ "$MATCHADDR" ]; then + match="$match, DRIVERS==\"?*\", ATTR{address}==\"$MATCHADDR\"" +fi + +if [ "$MATCHDRV" ]; then + match="$match, DRIVERS==\"$MATCHDRV\"" +fi + +if [ "$MATCHDEVID" ]; then + match="$match, ATTR{dev_id}==\"$MATCHDEVID\"" +fi + +if [ "$MATCHID" ]; then + match="$match, KERNELS==\"$MATCHID\"" +fi + +if [ "$MATCHIFTYPE" ]; then + match="$match, ATTR{type}==\"$MATCHIFTYPE\"" +fi + +if [ -z "$match" ]; then + echo "missing valid match" >&2 + unlock_rules_file + exit 1 +fi + +basename=${INTERFACE%%[0-9]*} +match="$match, KERNEL==\"$basename*\"" + +if [ "$INTERFACE_NAME" ]; then + # external tools may request a custom name + COMMENT="$COMMENT (custom name provided by external tool)" + if [ "$INTERFACE_NAME" != "$INTERFACE" ]; then + INTERFACE=$INTERFACE_NAME; + echo "INTERFACE_NEW=$INTERFACE" + fi +else + # if a rule using the current name already exists, find a new name + if interface_name_taken; then + INTERFACE="$basename$(find_next_available "$basename[0-9]*")" + # prevent INTERFACE from being "eth" instead of "eth0" + [ "$INTERFACE" = "${INTERFACE%%[ \[\]0-9]*}" ] && INTERFACE=${INTERFACE}0 + echo "INTERFACE_NEW=$INTERFACE" + fi +fi + +write_rule "$match" "$INTERFACE" "$COMMENT" + +unlock_rules_file + +exit 0 Index: systemd-210/Makefile.am =================================================================== --- systemd-210.orig/Makefile.am +++ systemd-210/Makefile.am @@ -2552,7 +2552,14 @@ dist_udevrules_DATA += \ rules/75-tty-description.rules \ rules/78-sound-card.rules \ rules/80-net-setup-link.rules \ - rules/95-udev-late.rules + rules/95-udev-late.rules \ + src/udev/rule_generator/75-persistent-net-generator.rules \ + src/udev/rule_generator/76-net-sriov-names.rules + +udevlibexec_PROGRAMS += \ + src/udev/rule_generator/rule_generator.functions \ + src/udev/rule_generator/write_net_rules \ + src/udev/rule_generator/net-set-sriov-names dist_udevhwdb_DATA = \ hwdb/20-pci-vendor-model.hwdb \ Index: systemd-210/src/udev/rule_generator/76-net-sriov-names.rules =================================================================== --- /dev/null +++ systemd-210/src/udev/rule_generator/76-net-sriov-names.rules @@ -0,0 +1,18 @@ +# do not edit this file, it will be overwritten on update +# +# rename SRIOV virtual function interfaces + +ACTION=="remove", GOTO="net-sriov-names_end" +SUBSYSTEM!="net", GOTO="net-sriov-names_end" + +IMPORT{cmdline}="net.ifnames" +ENV{net.ifnames}=="1", GOTO="net-sriov-names_end" + +SUBSYSTEM=="net", SUBSYSTEMS=="pci", ACTION=="add", NAME=="?*", ENV{INTERFACE_NEW}="$name" +SUBSYSTEM=="net", SUBSYSTEMS=="pci", ACTION=="add", IMPORT{program}="net-set-sriov-names" + +# rename interface if needed +ENV{INTERFACE_NEW}=="?*", NAME="$env{INTERFACE_NEW}" +ENV{INTERFACE_NEW}=="", DRIVERS=="cxgb4vf|igbvf|ixgbevf", NAME="vf$attr{ifindex}" + +LABEL="net-sriov-names_end" Index: systemd-210/src/udev/rule_generator/net-set-sriov-names =================================================================== --- /dev/null +++ systemd-210/src/udev/rule_generator/net-set-sriov-names @@ -0,0 +1,79 @@ +#!/bin/bash -e +# +# This script is run to rename virtual interfaces +# + +if [ -n "$UDEV_LOG" ]; then + if [ "$UDEV_LOG" -ge 7 ]; then + set -x + fi +fi + +# according to dev_new_index(), ifindex is within [1, INT_MAX] +int_max=$(/usr/bin/getconf INT_MAX) +ifindex_before() { + a=$1 + b=$2 + + ((0 < (b - a) && (b - a) < int_max / 2 || + -1 * int_max < (b - a) && (b - a) < -1 * int_max / 2)) +} + +rename_interface() { + local src_net=$1 + local dest_net=$2 + local err=0 + + /sbin/ip link set dev $src_net down + /sbin/ip link set dev $src_net name $dest_net +} + +if [ -z "$INTERFACE" ]; then + echo "missing \$INTERFACE" >&2 + exit 1 +fi + +if [ -e "/sys/class/net/$INTERFACE/device/physfn" ]; then + pf=$(ls -1 "/sys/class/net/$INTERFACE/device/physfn/net") + if [ $(echo "$pf" | wc -l) -ne 1 ]; then + echo "too many pf's" >&2 + exit 1 + fi + read vfindex < "/sys/class/net/$INTERFACE/ifindex" + read pfindex < "/sys/class/net/$pf/ifindex" + if ifindex_before $pfindex $vfindex; then + bus_info=$(basename $(readlink "/sys/class/net/$INTERFACE/device")) + for virtfn in "/sys/class/net/$pf/device/"virtfn*; do + if [ "$(basename $(readlink "$virtfn"))" = "$bus_info" ]; then + vfnum=$(basename "$virtfn") + vfnum=${vfnum#virtfn} + echo "INTERFACE_NEW=$pf.vf$vfnum" + exit 0 + fi + done + fi +fi + +read pfindex < "/sys/class/net/$INTERFACE/ifindex" +shopt -s nullglob +for virtfn in "/sys/class/net/$INTERFACE/device/"virtfn*; do + vf=$(ls -1 "$virtfn/net") + if [ $(echo "$vf" | wc -l) -ne 1 ]; then + echo "too many vf's" >&2 + exit 1 + fi + read vfindex < "/sys/class/net/$vf/ifindex" + if ifindex_before $vfindex $pfindex; then + vfnum=$(basename "$virtfn") + vfnum=${vfnum#virtfn} + if [ "$INTERFACE_NEW" ]; then + new_name=$INTERFACE_NEW + else + new_name=$INTERFACE + fi + new_name="$new_name.vf$vfnum" + if [ "$vf" != "$new_name" ]; then + rename_interface "$vf" "$new_name" + fi + fi +done Index: systemd-210/src/udev/net/link-config.c =================================================================== --- systemd-210.orig/src/udev/net/link-config.c +++ systemd-210/src/udev/net/link-config.c @@ -193,6 +193,18 @@ static bool enable_name_policy(void) { r = proc_cmdline(&line); if (r < 0) log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); +#if defined(NET_IFNAMES) && (NET_IFNAMES == 1) +# warning Using persistent rules as a default + if (r <= 0) + return false; + + FOREACH_WORD_QUOTED(w, l, line, state) + if (strneq(w, "net.ifnames=1", l)) + return true; + + return false; +#else +# warning Using predictable rules as a default if (r <= 0) return true; @@ -201,6 +213,7 @@ static bool enable_name_policy(void) { return false; return true; +#endif } int link_config_load(link_config_ctx *ctx) {
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