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 "#include \"regdb.h\""
  25         print ""
  26         regdb = "const struct ieee80211_regdomain *reg_regdb[] = {\n"
  27 }
  28
  29 /^[ \t]*#/ {
  30         # Ignore
  31 }
  32
  33 !active && /^[ \t]*$/ {
  34         # Ignore
  35 }
  36
  37 !active && /country/ {
  38         country=$2
  39         sub(/:/, "", country)
  40         printf "static const struct ieee80211_regdomain regdom_%s = {\n", country
  41         printf "\t.alpha2 = \"%s\",\n", country
  42         printf "\t.reg_rules = {\n"
  43         active = 1
  44         regdb = regdb "\t&regdom_" country ",\n"
  45 }
  46
  47 active && /^[ \t]*\(/ {
  48         start = $1
  49         sub(/\(/, "", start)
  50         end = $3
  51         bw = $5
  52         sub(/\),/, "", bw)
  53         gain = $6
  54         sub(/\(/, "", gain)
  55         sub(/,/, "", gain)
  56         power = $7
  57         sub(/\)/, "", power)
  58         sub(/,/, "", power)
  59         # power might be in mW...
  60         units = $8
  61         sub(/\)/, "", units)
  62         sub(/,/, "", units)
  63         if (units == "mW") {
  64                 if (power == 100) {
  65                         power = 20
  66                 } else if (power == 200) {
  67                         power = 23
  68                 } else if (power == 500) {
  69                         power = 27
  70                 } else if (power == 1000) {
  71                         power = 30
  72                 } else {
  73                         print "Unknown power value in database!"
  74                 }
  75         }
  76         flagstr = ""
  77         for (i=8; i<=NF; i++)
  78                 flagstr = flagstr $i
  79         split(flagstr, flagarray, ",")
  80         flags = ""
  81         for (arg in flagarray) {
  82                 if (flagarray[arg] == "NO-OFDM") {
  83                         flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  84                 } else if (flagarray[arg] == "NO-CCK") {
  85                         flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  86                 } else if (flagarray[arg] == "NO-INDOOR") {
  87                         flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  88                 } else if (flagarray[arg] == "NO-OUTDOOR") {
  89                         flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
  90                 } else if (flagarray[arg] == "DFS") {
  91                         flags = flags "\n\t\t\tNL80211_RRF_DFS | "
  92                 } else if (flagarray[arg] == "PTP-ONLY") {
  93                         flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
  94                 } else if (flagarray[arg] == "PTMP-ONLY") {
  95                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
  96                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
  97                         flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
  98                 } else if (flagarray[arg] == "NO-IBSS") {
  99                         flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
 100                 }
 101         }
 102         flags = flags "0"
 103         printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
 104         rules++
 105 }
 106
 107 active && /^[ \t]*$/ {
 108         active = 0
 109         printf "\t},\n"
 110         printf "\t.n_reg_rules = %d\n", rules
 111         printf "};\n\n"
 112         rules = 0;
 113 }
 114
 115 END {
 116         print regdb "};"
 117         print ""
 118         print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 119 }