rules/debian/75-persistent-net-generator.rules

   1 # These rules generate rules to keep network interface names unchanged
   2 # across reboots and write them to /etc/udev/rules.d/70-persistent-net.rules.
   3
   4 # variables used to communicate:
   5 #   MATCHADDR           MAC address used for the match
   6 #   MATCHID             bus_id used for the match
   7 #   MATCHDRV            driver name used for the match
   8 #   MATCHIFTYPE         interface type match
   9 #   COMMENT             comment to add to the generated rule
  10 #   INTERFACE_NAME      requested name supplied by external tool
  11 #   INTERFACE_NEW       new interface name returned by rule writer
  12
  13 ACTION!="add",                          GOTO="persistent_net_generator_end"
  14 SUBSYSTEM!="net",                       GOTO="persistent_net_generator_end"
  15
  16 # ignore the interface if a name has already been set
  17 NAME=="?*",                             GOTO="persistent_net_generator_end"
  18
  19 # device name whitelist
  20 KERNEL!="eth*|ath*|wlan*[0-9]|msh*|ra*|sta*|ctc*|lcs*|hsi*", \
  21                                         GOTO="persistent_net_generator_end"
  22
  23 # ignore Xen virtual interfaces
  24 SUBSYSTEMS=="xen",                      GOTO="persistent_net_generator_end"
  25
  26 # ignore UML virtual interfaces
  27 DRIVERS=="uml-netdev",                  GOTO="persistent_net_generator_end"
  28
  29 # ignore "secondary" raw interfaces of the madwifi driver
  30 KERNEL=="ath*", ATTRS{type}=="802",     GOTO="persistent_net_generator_end"
  31
  32 # ignore "secondary" monitor interfaces of mac80211 drivers
  33 KERNEL=="wlan*", ATTRS{type}=="803",    GOTO="persistent_net_generator_end"
  34
  35 # by default match on the MAC address and interface type
  36 ENV{MATCHADDR}="$attr{address}"
  37 ENV{MATCHIFTYPE}="$attr{type}"
  38
  39 # ignore interfaces with locally administered or null MAC addresses
  40 # and VMWare virtual interfaces
  41 ENV{MATCHADDR}=="?[2367abef]:*",        ENV{MATCHADDR}=""
  42 ENV{MATCHADDR}=="00:00:00:00:00:00",    ENV{MATCHADDR}=""
  43 ENV{MATCHADDR}=="00:0c:29:*|00:50:56:*", ENV{MATCHADDR}=""
  44
  45 # ibmveth interfaces have stable locally administered MAC addresses
  46 SUBSYSTEMS=="ibmveth",                  ENV{MATCHADDR}="$attr{address}"
  47
  48 # S/390 interfaces are matched only by id
  49 SUBSYSTEMS=="ccwgroup", \
  50         ENV{MATCHDRV}="$driver", ENV{MATCHID}="$id", ENV{MATCHADDR}=""
  51
  52 # terminate processing if there are not enough conditions to create a rule
  53 ENV{MATCHADDR}=="", ENV{MATCHID}=="", ENV{INTERFACE_NAME}=="", \
  54                                         GOTO="persistent_net_generator_end"
  55
  56
  57 # provide nice comments for the generated rules
  58 SUBSYSTEMS=="pci", \
  59  ENV{COMMENT}="PCI device $attr{vendor}:$attr{device}"
  60 SUBSYSTEMS=="pcmcia", \
  61  ENV{COMMENT}="PCMCIA device $attr{card_id}:$attr{manf_id}"
  62 SUBSYSTEMS=="usb", \
  63  ENV{COMMENT}="USB device 0x$attr{idVendor}:0x$attr{idProduct}"
  64 SUBSYSTEMS=="ccwgroup", \
  65  ENV{COMMENT}="S/390 device at $id"
  66 SUBSYSTEMS=="ibmveth", \
  67  ENV{COMMENT}="LPAR virtual device at $id"
  68 SUBSYSTEMS=="ieee1394", \
  69  ENV{COMMENT}="Firewire device $attr{host_id}"
  70 ENV{COMMENT}=="", \
  71  ENV{COMMENT}="Unknown $env{SUBSYSTEM} device ($env{DEVPATH})"
  72 ATTRS{driver}=="?*", \
  73  ENV{COMMENT}="$env{COMMENT} ($attr{driver})"
  74
  75
  76 # ignore interfaces without a driver link like bridges and VLANs, otherwise
  77 # generate and write the rule
  78 DRIVERS=="?*", IMPORT{program}="write_net_rules"
  79
  80 # rename the interface if requested
  81 ENV{INTERFACE_NEW}=="?*", NAME="$env{INTERFACE_NEW}"
  82
  83 LABEL="persistent_net_generator_end"
  84