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-rw-r--r--include/linux/nl80211.h48
-rw-r--r--net/wireless/core.c11
-rw-r--r--net/wireless/nl80211.c62
-rw-r--r--net/wireless/nl80211.h5
-rw-r--r--net/wireless/reg.c13
5 files changed, 138 insertions, 1 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index c0fd432b57dc..f33aa08dd9b3 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -150,6 +150,17 @@
* @NL80211_CMD_SCAN_ABORTED: scan was aborted, for unspecified reasons,
* partial scan results may be available
*
+ * @NL80211_CMD_REG_CHANGE: indicates to userspace the regulatory domain
+ * has been changed and provides details of the request information
+ * that caused the change such as who initiated the regulatory request
+ * (%NL80211_ATTR_REG_INITIATOR), the wiphy_idx
+ * (%NL80211_ATTR_REG_ALPHA2) on which the request was made from if
+ * the initiator was %NL80211_REGDOM_SET_BY_COUNTRY_IE or
+ * %NL80211_REGDOM_SET_BY_DRIVER, the type of regulatory domain
+ * set (%NL80211_ATTR_REG_TYPE), if the type of regulatory domain is
+ * %NL80211_REG_TYPE_COUNTRY the alpha2 to which we have moved on
+ * to (%NL80211_ATTR_REG_ALPHA2).
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -204,6 +215,8 @@ enum nl80211_commands {
NL80211_CMD_NEW_SCAN_RESULTS,
NL80211_CMD_SCAN_ABORTED,
+ NL80211_CMD_REG_CHANGE,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -218,6 +231,8 @@ enum nl80211_commands {
#define NL80211_CMD_SET_BSS NL80211_CMD_SET_BSS
#define NL80211_CMD_SET_MGMT_EXTRA_IE NL80211_CMD_SET_MGMT_EXTRA_IE
+#define NL80211_CMD_REG_CHANGE NL80211_CMD_REG_CHANGE
+
/**
* enum nl80211_attrs - nl80211 netlink attributes
*
@@ -329,6 +344,11 @@ enum nl80211_commands {
* messages carried the same generation number)
* @NL80211_ATTR_BSS: scan result BSS
*
+ * @NL80211_ATTR_REG_INITIATOR: indicates who requested the regulatory domain
+ * currently in effect. This could be any of the %NL80211_REGDOM_SET_BY_*
+ * @NL80211_ATTR_REG_TYPE: indicates the type of the regulatory domain currently
+ * set. This can be one of the nl80211_reg_type (%NL80211_REGDOM_TYPE_*)
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -403,6 +423,9 @@ enum nl80211_attrs {
NL80211_ATTR_SCAN_GENERATION,
NL80211_ATTR_BSS,
+ NL80211_ATTR_REG_INITIATOR,
+ NL80211_ATTR_REG_TYPE,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -420,6 +443,8 @@ enum nl80211_attrs {
#define NL80211_ATTR_WIPHY_CHANNEL_TYPE NL80211_ATTR_WIPHY_CHANNEL_TYPE
#define NL80211_ATTR_MGMT_SUBTYPE NL80211_ATTR_MGMT_SUBTYPE
#define NL80211_ATTR_IE NL80211_ATTR_IE
+#define NL80211_ATTR_REG_INITIATOR NL80211_ATTR_REG_INITIATOR
+#define NL80211_ATTR_REG_TYPE NL80211_ATTR_REG_TYPE
#define NL80211_MAX_SUPP_RATES 32
#define NL80211_MAX_SUPP_REG_RULES 32
@@ -692,6 +717,29 @@ enum nl80211_reg_initiator {
};
/**
+ * enum nl80211_reg_type - specifies the type of regulatory domain
+ * @NL80211_REGDOM_TYPE_COUNTRY: the regulatory domain set is one that pertains
+ * to a specific country. When this is set you can count on the
+ * ISO / IEC 3166 alpha2 country code being valid.
+ * @NL80211_REGDOM_TYPE_WORLD: the regulatory set domain is the world regulatory
+ * domain.
+ * @NL80211_REGDOM_TYPE_CUSTOM_WORLD: the regulatory domain set is a custom
+ * driver specific world regulatory domain. These do not apply system-wide
+ * and are only applicable to the individual devices which have requested
+ * them to be applied.
+ * @NL80211_REGDOM_TYPE_INTERSECTION: the regulatory domain set is the product
+ * of an intersection between two regulatory domains -- the previously
+ * set regulatory domain on the system and the last accepted regulatory
+ * domain request to be processed.
+ */
+enum nl80211_reg_type {
+ NL80211_REGDOM_TYPE_COUNTRY,
+ NL80211_REGDOM_TYPE_WORLD,
+ NL80211_REGDOM_TYPE_CUSTOM_WORLD,
+ NL80211_REGDOM_TYPE_INTERSECTION,
+};
+
+/**
* enum nl80211_reg_rule_attr - regulatory rule attributes
* @NL80211_ATTR_REG_RULE_FLAGS: a set of flags which specify additional
* considerations for a given frequency range. These are the
diff --git a/net/wireless/core.c b/net/wireless/core.c
index c939f5ee065e..17fe39049740 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -365,6 +365,17 @@ int wiphy_register(struct wiphy *wiphy)
if (IS_ERR(drv->wiphy.debugfsdir))
drv->wiphy.debugfsdir = NULL;
+ if (wiphy->custom_regulatory) {
+ struct regulatory_request request;
+
+ request.wiphy_idx = get_wiphy_idx(wiphy);
+ request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+ request.alpha2[0] = '9';
+ request.alpha2[1] = '9';
+
+ nl80211_send_reg_change_event(&request);
+ }
+
res = 0;
out_unlock:
mutex_unlock(&cfg80211_mutex);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 531bb67cf502..8ac3d26014a8 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2739,6 +2739,9 @@ static struct genl_multicast_group nl80211_config_mcgrp = {
static struct genl_multicast_group nl80211_scan_mcgrp = {
.name = "scan",
};
+static struct genl_multicast_group nl80211_regulatory_mcgrp = {
+ .name = "regulatory",
+};
/* notification functions */
@@ -2818,6 +2821,61 @@ void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
}
+/*
+ * This can happen on global regulatory changes or device specific settings
+ * based on custom world regulatory domains.
+ */
+void nl80211_send_reg_change_event(struct regulatory_request *request)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
+ if (!hdr) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ /* Userspace can always count this one always being set */
+ NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
+
+ if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
+ NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+ NL80211_REGDOM_TYPE_WORLD);
+ else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
+ NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+ NL80211_REGDOM_TYPE_CUSTOM_WORLD);
+ else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
+ request->intersect)
+ NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+ NL80211_REGDOM_TYPE_INTERSECTION);
+ else {
+ NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+ NL80211_REGDOM_TYPE_COUNTRY);
+ NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
+ }
+
+ if (wiphy_idx_valid(request->wiphy_idx))
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
+
+ if (genlmsg_end(msg, hdr) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
+
+ return;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ nlmsg_free(msg);
+}
+
/* initialisation/exit functions */
int nl80211_init(void)
@@ -2842,6 +2900,10 @@ int nl80211_init(void)
if (err)
goto err_out;
+ err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
+ if (err)
+ goto err_out;
+
return 0;
err_out:
genl_unregister_family(&nl80211_fam);
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 69787b621365..e65a3c38c52f 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -11,6 +11,7 @@ extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
struct net_device *netdev);
extern void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
struct net_device *netdev);
+extern void nl80211_send_reg_change_event(struct regulatory_request *request);
#else
static inline int nl80211_init(void)
{
@@ -31,6 +32,10 @@ static inline void nl80211_send_scan_aborted(
struct cfg80211_registered_device *rdev,
struct net_device *netdev)
{}
+static inline void
+nl80211_send_reg_change_event(struct regulatory_request *request)
+{
+}
#endif /* CONFIG_NL80211 */
#endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 68fde6d33dc3..eb8b8ed16155 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -41,6 +41,7 @@
#include <net/cfg80211.h>
#include "core.h"
#include "reg.h"
+#include "nl80211.h"
/* Receipt of information from last regulatory request */
static struct regulatory_request *last_request;
@@ -1403,8 +1404,16 @@ new_request:
pending_request = NULL;
/* When r == REG_INTERSECT we do need to call CRDA */
- if (r < 0)
+ if (r < 0) {
+ /*
+ * Since CRDA will not be called in this case as we already
+ * have applied the requested regulatory domain before we just
+ * inform userspace we have processed the request
+ */
+ if (r == -EALREADY)
+ nl80211_send_reg_change_event(last_request);
return r;
+ }
/*
* Note: When CONFIG_WIRELESS_OLD_REGULATORY is enabled
@@ -2084,6 +2093,8 @@ int set_regdom(const struct ieee80211_regdomain *rd)
print_regdomain(cfg80211_regdomain);
+ nl80211_send_reg_change_event(last_request);
+
return r;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 12:37:04 +0000