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 /^[ \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
  54 active && /^[ \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 $i
  86         split(flagstr, flagarray, ",")
  87         flags = ""
  88         for (arg in flagarray) {
  89                 if (flagarray[arg] == "NO-OFDM") {
  90                         flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
  91                 } else if (flagarray[arg] == "NO-CCK") {
  92                         flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
  93                 } else if (flagarray[arg] == "NO-INDOOR") {
  94                         flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
  95                 } else if (flagarray[arg] == "NO-OUTDOOR") {
  96                         flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
  97                 } else if (flagarray[arg] == "DFS") {
  98                         flags = flags "\n\t\t\tNL80211_RRF_DFS | "
  99                 } else if (flagarray[arg] == "PTP-ONLY") {
 100                         flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
 101                 } else if (flagarray[arg] == "PTMP-ONLY") {
 102                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
 103                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
 104                         flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
 105                 } else if (flagarray[arg] == "NO-IBSS") {
 106                         flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
 107                 }
 108         }
 109         flags = flags "0"
 110         printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
 111         rules++
 112 }
 113
 114 active && /^[ \t]*$/ {
 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
 122 END {
 123         print regdb "};"
 124         print ""
 125         print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
 126 }