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         flag_starts_at = 7
  55
  56         start = $1
  57         sub(/\(/, "", start)
  58         end = $3
  59         bw = $5
  60         sub(/\),/, "", bw)
  61         gain = 0
  62         power = $6
  63         # power might be in mW...
  64         units = $7
  65         dfs_cac = 0
  66
  67         sub(/\(/, "", power)
  68         sub(/\),/, "", power)
  69         sub(/\),/, "", units)
  70         sub(/\)/, "", units)
  71
  72         if (units == "mW") {
  73                 flag_starts_at = 8
  74                 power = 10 * log(power)/log(10)
  75                 if ($8 ~ /[[:digit:]]/) {
  76                         flag_starts_at = 9
  77                         dfs_cac = $8
  78                 }
  79         } else {
  80                 if ($7 ~ /[[:digit:]]/) {
  81                         flag_starts_at = 8
  82                         dfs_cac = $7
  83                 }
  84         }
  85         sub(/\(/, "", dfs_cac)
  86         sub(/\),/, "", dfs_cac)
  87         flagstr = ""
  88         for (i=flag_starts_at; i<=NF; i++)
  89                 flagstr = flagstr $i
  90         split(flagstr, flagarray, ",")
  91         flags = ""
  92         for (arg in flagarray) {
  93                 if (flagarray[arg] == "NO-OFDM") {
  94                         flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  95                 } else if (flagarray[arg] == "NO-CCK") {
  96                         flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  97                 } else if (flagarray[arg] == "NO-INDOOR") {
  98                         flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  99                 } else if (flagarray[arg] == "NO-OUTDOOR") {
 100                         flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
 101                 } else if (flagarray[arg] == "DFS") {
 102                         flags = flags "\n\t\t\tNL80211_RRF_DFS | "
 103                 } else if (flagarray[arg] == "PTP-ONLY") {
 104                         flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
 105                 } else if (flagarray[arg] == "PTMP-ONLY") {
 106                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
 107                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
 108                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 109                 } else if (flagarray[arg] == "NO-IBSS") {
 110                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 111                 } else if (flagarray[arg] == "NO-IR") {
 112                         flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 113                 } else if (flagarray[arg] == "AUTO-BW") {
 114                         flags = flags "\n\t\t\tNL80211_RRF_AUTO_BW | "
 115                 }
 116
 117         }
 118         flags = flags "0"
 119         printf "\t\tREG_RULE_EXT(%d, %d, %d, %d, %.0f, %d, %s),\n", start, end, bw, gain, power, dfs_cac, flags
 120         rules++
 121 }
 122
 123 function print_tail_country()
 124 {
 125         active = 0
 126         printf "\t},\n"
 127         printf "\t.n_reg_rules = %d\n", rules
 128         printf "};\n\n"
 129         rules = 0;
 130 }
 131
 132 /^[ \t]*#/ {
 133         # Ignore
 134 }
 135
 136 !active && /^[ \t]*$/ {
 137         # Ignore
 138 }
 139
 140 !active && /country/ {
 141         parse_country_head()
 142 }
 143
 144 active && /^[ \t]*\(/ {
 145         parse_reg_rule()
 146 }
 147
 148 active && /^[ \t]*$/ {
 149         print_tail_country()
 150 }
 151
 152 END {
 153         if (active)
 154                 print_tail_country()
 155         print regdb "};"
 156         print ""
 157         print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 158 }