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 # 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
  22 BEGIN {
  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 function parse_country_head() {
  37         country=$2
  38         sub(/:/, "", country)
  39         printf "static const struct ieee80211_regdomain regdom_%s = {\n", country
  40         printf "\t.alpha2 = \"%s\",\n", country
  41         if ($NF ~ /DFS-ETSI/)
  42                 printf "\t.dfs_region = NL80211_DFS_ETSI,\n"
  43         else if ($NF ~ /DFS-FCC/)
  44                 printf "\t.dfs_region = NL80211_DFS_FCC,\n"
  45         else if ($NF ~ /DFS-JP/)
  46                 printf "\t.dfs_region = NL80211_DFS_JP,\n"
  47         printf "\t.reg_rules = {\n"
  48         active = 1
  49         regdb = regdb "\t&regdom_" country ",\n"
  50 }
  51
  52 function parse_reg_rule()
  53 {
  54         start = $1
  55         sub(/\(/, "", start)
  56         end = $3
  57         bw = $5
  58         sub(/\),/, "", bw)
  59         gain = $6
  60         sub(/\(/, "", gain)
  61         sub(/,/, "", gain)
  62         power = $7
  63         sub(/\)/, "", power)
  64         sub(/,/, "", power)
  65         # power might be in mW...
  66         units = $8
  67         sub(/\)/, "", units)
  68         sub(/,/, "", units)
  69         if (units == "mW") {
  70                 if (power == 100) {
  71                         power = 20
  72                 } else if (power == 200) {
  73                         power = 23
  74                 } else if (power == 500) {
  75                         power = 27
  76                 } else if (power == 1000) {
  77                         power = 30
  78                 } else {
  79                         print "Unknown power value in database!"
  80                 }
  81         }
  82         flagstr = ""
  83         for (i=8; i<=NF; i++)
  84                 flagstr = flagstr $i
  85         split(flagstr, flagarray, ",")
  86         flags = ""
  87         for (arg in flagarray) {
  88                 if (flagarray[arg] == "NO-OFDM") {
  89                         flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  90                 } else if (flagarray[arg] == "NO-CCK") {
  91                         flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  92                 } else if (flagarray[arg] == "NO-INDOOR") {
  93                         flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  94                 } else if (flagarray[arg] == "NO-OUTDOOR") {
  95                         flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
  96                 } else if (flagarray[arg] == "DFS") {
  97                         flags = flags "\n\t\t\tNL80211_RRF_DFS | "
  98                 } else if (flagarray[arg] == "PTP-ONLY") {
  99                         flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
 100                 } else if (flagarray[arg] == "PTMP-ONLY") {
 101                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
 102                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
 103                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 104                 } else if (flagarray[arg] == "NO-IBSS") {
 105                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 106                 } else if (flagarray[arg] == "NO-IR") {
 107                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 108                 }
 109
 110         }
 111         flags = flags "0"
 112         printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
 113         rules++
 114 }
 115
 116 function print_tail_country()
 117 {
 118         active = 0
 119         printf "\t},\n"
 120         printf "\t.n_reg_rules = %d\n", rules
 121         printf "};\n\n"
 122         rules = 0;
 123 }
 124
 125 /^[ \t]*#/ {
 126         # Ignore
 127 }
 128
 129 !active && /^[ \t]*$/ {
 130         # Ignore
 131 }
 132
 133 !active && /country/ {
 134         parse_country_head()
 135 }
 136
 137 active && /^[ \t]*\(/ {
 138         parse_reg_rule()
 139 }
 140
 141 active && /^[ \t]*$/ {
 142         print_tail_country()
 143 }
 144
 145 END {
 146         if (active)
 147                 print_tail_country()
 148         print regdb "};"
 149         print ""
 150         print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 151 }