Root/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
15BEGIN {
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 ""
25    regdb = "const struct ieee80211_regdomain *reg_regdb[] = {\n"
26}
27
28/^[ \t]*#/ {
29    # Ignore
30}
31
32!active && /^[ \t]*$/ {
33    # Ignore
34}
35
36!active && /country/ {
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    printf "\t.reg_rules = {\n"
42    active = 1
43    regdb = regdb "\t&regdom_" country ",\n"
44}
45
46active && /^[ \t]*\(/ {
47    start = $1
48    sub(/\(/, "", start)
49    end = $3
50    bw = $5
51    sub(/\),/, "", bw)
52    gain = $6
53    sub(/\(/, "", gain)
54    sub(/,/, "", gain)
55    power = $7
56    sub(/\)/, "", power)
57    sub(/,/, "", power)
58    # power might be in mW...
59    units = $8
60    sub(/\)/, "", units)
61    sub(/,/, "", units)
62    if (units == "mW") {
63        if (power == 100) {
64            power = 20
65        } else if (power == 200) {
66            power = 23
67        } else if (power == 500) {
68            power = 27
69        } else if (power == 1000) {
70            power = 30
71        } else {
72            print "Unknown power value in database!"
73        }
74    }
75    flagstr = ""
76    for (i=8; i<=NF; i++)
77        flagstr = flagstr $i
78    split(flagstr, flagarray, ",")
79    flags = ""
80    for (arg in flagarray) {
81        if (flagarray[arg] == "NO-OFDM") {
82            flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
83        } else if (flagarray[arg] == "NO-CCK") {
84            flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
85        } else if (flagarray[arg] == "NO-INDOOR") {
86            flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
87        } else if (flagarray[arg] == "NO-OUTDOOR") {
88            flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
89        } else if (flagarray[arg] == "DFS") {
90            flags = flags "\n\t\t\tNL80211_RRF_DFS | "
91        } else if (flagarray[arg] == "PTP-ONLY") {
92            flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
93        } else if (flagarray[arg] == "PTMP-ONLY") {
94            flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
95        } else if (flagarray[arg] == "PASSIVE-SCAN") {
96            flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
97        } else if (flagarray[arg] == "NO-IBSS") {
98            flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
99        }
100    }
101    flags = flags "0"
102    printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
103    rules++
104}
105
106active && /^[ \t]*$/ {
107    active = 0
108    printf "\t},\n"
109    printf "\t.n_reg_rules = %d\n", rules
110    printf "};\n\n"
111    rules = 0;
112}
113
114END {
115    print regdb "};"
116    print ""
117    print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
118}
119

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