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authorJohn W. Linville <linville@tuxdriver.com>2009-12-18 22:59:01 (GMT)
committerJohn W. Linville <linville@tuxdriver.com>2009-12-21 23:56:10 (GMT)
commit3b377ea9d4efc94dc52fe41b4dfdb463635ab298 (patch)
tree76724e77913096c03f6b216573d4a24ce13fe7c3 /Documentation/networking
parent59d9cb071d6209f2e8df2d16228cfdc7bab1f2d1 (diff)
wireless: support internal statically compiled regulatory database
This patch provides infrastructure for machine translation of the regulatory rules database used by CRDA into a C data structure. It includes code for searching that database as an alternative to dynamic regulatory rules updates via CRDA. Most people should use CRDA instead of this infrastructure, but it provides a better alternative than the WIRELESS_OLD_REGULATORY infrastructure (which can now be removed). Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/regulatory.txt24
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/networking/regulatory.txt b/Documentation/networking/regulatory.txt
index ee31369..9551622 100644
--- a/Documentation/networking/regulatory.txt
+++ b/Documentation/networking/regulatory.txt
@@ -188,3 +188,27 @@ Then in some part of your code after your wiphy has been registered:
&mydriver_jp_regdom.reg_rules[i],
sizeof(struct ieee80211_reg_rule));
regulatory_struct_hint(rd);
+
+Statically compiled regulatory database
+---------------------------------------
+
+In most situations the userland solution using CRDA as described
+above is the preferred solution. However in some cases a set of
+rules built into the kernel itself may be desirable. To account
+for this situation, a configuration option has been provided
+(i.e. CONFIG_CFG80211_INTERNAL_REGDB). With this option enabled,
+the wireless database information contained in net/wireless/db.txt is
+used to generate a data structure encoded in net/wireless/regdb.c.
+That option also enables code in net/wireless/reg.c which queries
+the data in regdb.c as an alternative to using CRDA.
+
+The file net/wireless/db.txt should be kept up-to-date with the db.txt
+file available in the git repository here:
+
+ git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-regdb.git
+
+Again, most users in most situations should be using the CRDA package
+provided with their distribution, and in most other situations users
+should be building and using CRDA on their own rather than using
+this option. If you are not absolutely sure that you should be using
+CONFIG_CFG80211_INTERNAL_REGDB then _DO_NOT_USE_IT_.

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