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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 }