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docs: networking: convert regulatory.txt to ReST
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -98,6 +98,7 @@ Contents:
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radiotap-headers
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ray_cs
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rds
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regulatory
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.. only:: subproject and html
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@ -1,5 +1,8 @@
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.. SPDX-License-Identifier: GPL-2.0
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=======================================
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Linux wireless regulatory documentation
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---------------------------------------
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=======================================
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This document gives a brief review over how the Linux wireless
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regulatory infrastructure works.
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@ -57,7 +60,7 @@ Users can use iw:
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http://wireless.kernel.org/en/users/Documentation/iw
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An example:
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An example::
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# set regulatory domain to "Costa Rica"
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iw reg set CR
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@ -104,9 +107,9 @@ Example code - drivers hinting an alpha2:
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This example comes from the zd1211rw device driver. You can start
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by having a mapping of your device's EEPROM country/regulatory
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domain value to a specific alpha2 as follows:
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domain value to a specific alpha2 as follows::
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static struct zd_reg_alpha2_map reg_alpha2_map[] = {
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static struct zd_reg_alpha2_map reg_alpha2_map[] = {
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{ ZD_REGDOMAIN_FCC, "US" },
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{ ZD_REGDOMAIN_IC, "CA" },
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{ ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */
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@ -116,10 +119,10 @@ static struct zd_reg_alpha2_map reg_alpha2_map[] = {
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{ ZD_REGDOMAIN_FRANCE, "FR" },
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Then you can define a routine to map your read EEPROM value to an alpha2,
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as follows:
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as follows::
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static int zd_reg2alpha2(u8 regdomain, char *alpha2)
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{
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static int zd_reg2alpha2(u8 regdomain, char *alpha2)
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{
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unsigned int i;
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struct zd_reg_alpha2_map *reg_map;
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for (i = 0; i < ARRAY_SIZE(reg_alpha2_map); i++) {
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@ -131,12 +134,14 @@ static int zd_reg2alpha2(u8 regdomain, char *alpha2)
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}
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}
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return 1;
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}
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}
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Lastly, you can then hint to the core of your discovered alpha2, if a match
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was found. You need to do this after you have registered your wiphy. You
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are expected to do this during initialization.
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::
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r = zd_reg2alpha2(mac->regdomain, alpha2);
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if (!r)
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regulatory_hint(hw->wiphy, alpha2);
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@ -156,9 +161,9 @@ call regulatory_hint() with the regulatory domain structure in it.
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Bellow is a simple example, with a regulatory domain cached using the stack.
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Your implementation may vary (read EEPROM cache instead, for example).
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Example cache of some regulatory domain
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Example cache of some regulatory domain::
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struct ieee80211_regdomain mydriver_jp_regdom = {
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struct ieee80211_regdomain mydriver_jp_regdom = {
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.n_reg_rules = 3,
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.alpha2 = "JP",
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//.alpha2 = "99", /* If I have no alpha2 to map it to */
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@ -173,9 +178,9 @@ struct ieee80211_regdomain mydriver_jp_regdom = {
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NL80211_RRF_NO_IR|
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NL80211_RRF_DFS),
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}
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};
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};
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Then in some part of your code after your wiphy has been registered:
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Then in some part of your code after your wiphy has been registered::
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struct ieee80211_regdomain *rd;
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int size_of_regd;
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@ -193,7 +193,7 @@ W: https://wireless.wiki.kernel.org/
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
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F: Documentation/driver-api/80211/cfg80211.rst
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F: Documentation/networking/regulatory.txt
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F: Documentation/networking/regulatory.rst
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F: include/linux/ieee80211.h
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F: include/net/cfg80211.h
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F: include/net/ieee80211_radiotap.h
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