linux/net/wireless/genregdb.awk
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   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# Permission to use, copy, modify, and/or distribute this software for any
  11# purpose with or without fee is hereby granted, provided that the above
  12# copyright notice and this permission notice appear in all copies.
  13#
  14# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  15# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  16# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  17# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  18# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  19# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  20# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  21
  22BEGIN {
  23        active = 0
  24        rules = 0;
  25        print "/*"
  26        print " * DO NOT EDIT -- file generated from data in db.txt"
  27        print " */"
  28        print ""
  29        print "#include <linux/nl80211.h>"
  30        print "#include <net/cfg80211.h>"
  31        print "#include \"regdb.h\""
  32        print ""
  33        regdb = "const struct ieee80211_regdomain *reg_regdb[] = {\n"
  34}
  35
  36/^[ \t]*#/ {
  37        # Ignore
  38}
  39
  40!active && /^[ \t]*$/ {
  41        # Ignore
  42}
  43
  44!active && /country/ {
  45        country=$2
  46        sub(/:/, "", country)
  47        printf "static const struct ieee80211_regdomain regdom_%s = {\n", country
  48        printf "\t.alpha2 = \"%s\",\n", country
  49        printf "\t.reg_rules = {\n"
  50        active = 1
  51        regdb = regdb "\t&regdom_" country ",\n"
  52}
  53
  54active && /^[ \t]*\(/ {
  55        start = $1
  56        sub(/\(/, "", start)
  57        end = $3
  58        bw = $5
  59        sub(/\),/, "", bw)
  60        gain = $6
  61        sub(/\(/, "", gain)
  62        sub(/,/, "", gain)
  63        power = $7
  64        sub(/\)/, "", power)
  65        sub(/,/, "", power)
  66        # power might be in mW...
  67        units = $8
  68        sub(/\)/, "", units)
  69        sub(/,/, "", units)
  70        if (units == "mW") {
  71                if (power == 100) {
  72                        power = 20
  73                } else if (power == 200) {
  74                        power = 23
  75                } else if (power == 500) {
  76                        power = 27
  77                } else if (power == 1000) {
  78                        power = 30
  79                } else {
  80                        print "Unknown power value in database!"
  81                }
  82        }
  83        flagstr = ""
  84        for (i=8; i<=NF; i++)
  85                flagstr = flagstr $i
  86        split(flagstr, flagarray, ",")
  87        flags = ""
  88        for (arg in flagarray) {
  89                if (flagarray[arg] == "NO-OFDM") {
  90                        flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  91                } else if (flagarray[arg] == "NO-CCK") {
  92                        flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  93                } else if (flagarray[arg] == "NO-INDOOR") {
  94                        flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  95                } else if (flagarray[arg] == "NO-OUTDOOR") {
  96                        flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
  97                } else if (flagarray[arg] == "DFS") {
  98                        flags = flags "\n\t\t\tNL80211_RRF_DFS | "
  99                } else if (flagarray[arg] == "PTP-ONLY") {
 100                        flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
 101                } else if (flagarray[arg] == "PTMP-ONLY") {
 102                        flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
 103                } else if (flagarray[arg] == "PASSIVE-SCAN") {
 104                        flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
 105                } else if (flagarray[arg] == "NO-IBSS") {
 106                        flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
 107                }
 108        }
 109        flags = flags "0"
 110        printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
 111        rules++
 112}
 113
 114active && /^[ \t]*$/ {
 115        active = 0
 116        printf "\t},\n"
 117        printf "\t.n_reg_rules = %d\n", rules
 118        printf "};\n\n"
 119        rules = 0;
 120}
 121
 122END {
 123        print regdb "};"
 124        print ""
 125        print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 126}
 127
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