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# 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
36function 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
52function 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    dfs_cac = $9
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    } else {
83        dfs_cac = $8
84    }
85    sub(/,/, "", dfs_cac)
86    sub(/\(/, "", dfs_cac)
87    sub(/\)/, "", dfs_cac)
88    flagstr = ""
89    for (i=8; i<=NF; i++)
90        flagstr = flagstr $i
91    split(flagstr, flagarray, ",")
92    flags = ""
93    for (arg in flagarray) {
94        if (flagarray[arg] == "NO-OFDM") {
95            flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
96        } else if (flagarray[arg] == "NO-CCK") {
97            flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
98        } else if (flagarray[arg] == "NO-INDOOR") {
99            flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
100        } else if (flagarray[arg] == "NO-OUTDOOR") {
101            flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
102        } else if (flagarray[arg] == "DFS") {
103            flags = flags "\n\t\t\tNL80211_RRF_DFS | "
104        } else if (flagarray[arg] == "PTP-ONLY") {
105            flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
106        } else if (flagarray[arg] == "PTMP-ONLY") {
107            flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
108        } else if (flagarray[arg] == "PASSIVE-SCAN") {
109            flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
110        } else if (flagarray[arg] == "NO-IBSS") {
111            flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
112        } else if (flagarray[arg] == "NO-IR") {
113            flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
114        } else if (flagarray[arg] == "AUTO-BW") {
115            flags = flags "\n\t\t\tNL80211_RRF_AUTO_BW | "
116        }
117
118    }
119    flags = flags "0"
120    printf "\t\tREG_RULE_EXT(%d, %d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, dfs_cac, flags
121    rules++
122}
123
124function print_tail_country()
125{
126    active = 0
127    printf "\t},\n"
128    printf "\t.n_reg_rules = %d\n", rules
129    printf "};\n\n"
130    rules = 0;
131}
132
133/^[ \t]*#/ {
134    # Ignore
135}
136
137!active && /^[ \t]*$/ {
138    # Ignore
139}
140
141!active && /country/ {
142    parse_country_head()
143}
144
145active && /^[ \t]*\(/ {
146    parse_reg_rule()
147}
148
149active && /^[ \t]*$/ {
150    print_tail_country()
151}
152
153END {
154    if (active)
155        print_tail_country()
156    print regdb "};"
157    print ""
158    print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
159}
160

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