net/wireless/genregdb.awk

   1 #!/usr/bin/awk -f
   2 #
   3 # genregdb.awk -- generate regdb.c from db.txt
   4 #
   5 # Actually, it reads from stdin (presumed to be db.txt) and writes
   6 # to stdout (presumed to be regdb.c), but close enough...
   7 #
   8 # Copyright 2009 John W. Linville <linville@tuxdriver.com>
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License version 2 as
  12 # published by the Free Software Foundation.
  13 #
  14
  15 BEGIN {
  16         active = 0
  17         rules = 0;
  18         print "/*"
  19         print " * DO NOT EDIT -- file generated from data in db.txt"
  20         print " */"
  21         print ""
  22         print "#include <linux/nl80211.h>"
  23         print "#include <net/cfg80211.h>"
  24         print ""
  25         regdb = "const struct ieee80211_regdomain *reg_regdb[] = {\n"
  26 }
  27
  28 /^[ \t]*#/ {
  29         # Ignore
  30 }
  31
  32 !active && /^[ \t]*$/ {
  33         # Ignore
  34 }
  35
  36 !active && /country/ {
  37         country=$2
  38         sub(/:/, "", country)
  39         printf "static const struct ieee80211_regdomain regdom_%s = {\n", country
  40         printf "\t.alpha2 = \"%s\",\n", country
  41         printf "\t.reg_rules = {\n"
  42         active = 1
  43         regdb = regdb "\t&regdom_" country ",\n"
  44 }
  45
  46 active && /^[ \t]*\(/ {
  47         start = $1
  48         sub(/\(/, "", start)
  49         end = $3
  50         bw = $5
  51         sub(/\),/, "", bw)
  52         gain = $6
  53         sub(/\(/, "", gain)
  54         sub(/,/, "", gain)
  55         power = $7
  56         sub(/\)/, "", power)
  57         sub(/,/, "", power)
  58         # power might be in mW...
  59         units = $8
  60         sub(/\)/, "", units)
  61         sub(/,/, "", units)
  62         if (units == "mW") {
  63                 if (power == 100) {
  64                         power = 20
  65                 } else if (power == 200) {
  66                         power = 23
  67                 } else if (power == 500) {
  68                         power = 27
  69                 } else if (power == 1000) {
  70                         power = 30
  71                 } else {
  72                         print "Unknown power value in database!"
  73                 }
  74         }
  75         flagstr = ""
  76         for (i=8; i<=NF; i++)
  77                 flagstr = flagstr $i
  78         split(flagstr, flagarray, ",")
  79         flags = ""
  80         for (arg in flagarray) {
  81                 if (flagarray[arg] == "NO-OFDM") {
  82                         flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  83                 } else if (flagarray[arg] == "NO-CCK") {
  84                         flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  85                 } else if (flagarray[arg] == "NO-INDOOR") {
  86                         flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  87                 } else if (flagarray[arg] == "NO-OUTDOOR") {
  88                         flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
  89                 } else if (flagarray[arg] == "DFS") {
  90                         flags = flags "\n\t\t\tNL80211_RRF_DFS | "
  91                 } else if (flagarray[arg] == "PTP-ONLY") {
  92                         flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
  93                 } else if (flagarray[arg] == "PTMP-ONLY") {
  94                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
  95                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
  96                         flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
  97                 } else if (flagarray[arg] == "NO-IBSS") {
  98                         flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
  99                 }
 100         }
 101         flags = flags "0"
 102         printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
 103         rules++
 104 }
 105
 106 active && /^[ \t]*$/ {
 107         active = 0
 108         printf "\t},\n"
 109         printf "\t.n_reg_rules = %d\n", rules
 110         printf "};\n\n"
 111         rules = 0;
 112 }
 113
 114 END {
 115         print regdb "};"
 116         print ""
 117         print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 118 }