mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-22 23:09:34 +01:00
wiphy: Track regulatory domain changes
When a new wiphy is added query its regulatory domain and listen for nl80211 regulatory notifications to be able to provide current regulatory country code through the new wiphy_get_reg_domain_country().
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parent
0f3f0086ae
commit
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118
src/wiphy.c
118
src/wiphy.c
@ -52,6 +52,7 @@
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#include "src/common.h"
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#include "src/common.h"
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#include "src/watchlist.h"
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#include "src/watchlist.h"
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#include "src/nl80211util.h"
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#include "src/nl80211util.h"
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#include "src/nl80211cmd.h"
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#define EXT_CAP_LEN 10
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#define EXT_CAP_LEN 10
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@ -60,6 +61,7 @@ static struct l_hwdb *hwdb;
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static char **whitelist_filter;
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static char **whitelist_filter;
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static char **blacklist_filter;
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static char **blacklist_filter;
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static int mac_randomize_bytes = 6;
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static int mac_randomize_bytes = 6;
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static char regdom_country[2];
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struct wiphy {
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struct wiphy {
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uint32_t id;
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uint32_t id;
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@ -81,6 +83,8 @@ struct wiphy {
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uint8_t *iftype_extended_capabilities[NUM_NL80211_IFTYPES];
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uint8_t *iftype_extended_capabilities[NUM_NL80211_IFTYPES];
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uint8_t *supported_rates[NUM_NL80211_BANDS];
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uint8_t *supported_rates[NUM_NL80211_BANDS];
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uint8_t rm_enabled_capabilities[7]; /* 5 size max + header */
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uint8_t rm_enabled_capabilities[7]; /* 5 size max + header */
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struct l_genl_family *nl80211;
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char regdom_country[2];
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bool support_scheduled_scan:1;
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bool support_scheduled_scan:1;
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bool support_rekey_offload:1;
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bool support_rekey_offload:1;
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@ -227,6 +231,7 @@ static void wiphy_free(void *data)
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l_free(wiphy->model_str);
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l_free(wiphy->model_str);
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l_free(wiphy->vendor_str);
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l_free(wiphy->vendor_str);
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l_free(wiphy->driver_str);
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l_free(wiphy->driver_str);
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l_genl_family_free(wiphy->nl80211);
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l_free(wiphy);
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l_free(wiphy);
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}
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}
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@ -562,6 +567,18 @@ const uint8_t *wiphy_get_supported_rates(struct wiphy *wiphy, unsigned int band,
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return wiphy->supported_rates[band];
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return wiphy->supported_rates[band];
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}
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}
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void wiphy_get_reg_domain_country(struct wiphy *wiphy, char *out)
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{
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char *country = wiphy->regdom_country;
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if (!country[0])
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/* Wiphy uses the global regulatory domain */
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country = regdom_country;
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out[0] = country[0];
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out[1] = country[1];
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}
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uint32_t wiphy_state_watch_add(struct wiphy *wiphy,
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uint32_t wiphy_state_watch_add(struct wiphy *wiphy,
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wiphy_state_watch_func_t func,
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wiphy_state_watch_func_t func,
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void *user_data, wiphy_destroy_func_t destroy)
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void *user_data, wiphy_destroy_func_t destroy)
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@ -1046,9 +1063,11 @@ static void wiphy_register(struct wiphy *wiphy)
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struct wiphy *wiphy_create(uint32_t wiphy_id, const char *name)
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struct wiphy *wiphy_create(uint32_t wiphy_id, const char *name)
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{
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{
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struct wiphy *wiphy;
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struct wiphy *wiphy;
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struct l_genl *genl = iwd_get_genl();
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wiphy = wiphy_new(wiphy_id);
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wiphy = wiphy_new(wiphy_id);
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l_strlcpy(wiphy->name, name, sizeof(wiphy->name));
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l_strlcpy(wiphy->name, name, sizeof(wiphy->name));
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wiphy->nl80211 = l_genl_family_new(genl, NL80211_GENL_NAME);
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l_queue_push_head(wiphy_list, wiphy);
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l_queue_push_head(wiphy_list, wiphy);
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if (!wiphy_is_managed(name))
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if (!wiphy_is_managed(name))
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@ -1138,6 +1157,70 @@ static void wiphy_setup_rm_enabled_capabilities(struct wiphy *wiphy)
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*/
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*/
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}
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}
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static void wiphy_update_reg_domain(struct wiphy *wiphy, bool global,
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struct l_genl_msg *msg)
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{
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char *out_country;
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if (global)
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/*
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* Leave @wiphy->regdom_country as all zeros to mean that it
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* uses the global @regdom_country, i.e. is not self-managed.
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*
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* Even if we're called because we queried a new wiphy's
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* reg domain, use the value we received here to update our
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* global @regdom_country in case this is the first opportunity
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* we have to update it -- possibly because this is the first
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* wiphy created (that is not self-managed anyway) and we
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* haven't received any REG_CHANGE events yet.
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*/
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out_country = regdom_country;
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else
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out_country = wiphy->regdom_country;
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/*
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* Write the new country code or XX if the reg domain is not a
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* country domain.
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*/
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if (nl80211_parse_attrs(msg, NL80211_ATTR_REG_ALPHA2, out_country,
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NL80211_ATTR_UNSPEC) < 0)
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out_country[0] = out_country[1] = 'X';
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l_debug("New reg domain country code for %s is %c%c",
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global ? "(global)" : wiphy->name,
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out_country[0], out_country[1]);
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}
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static void wiphy_get_reg_cb(struct l_genl_msg *msg, void *user_data)
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{
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struct wiphy *wiphy = user_data;
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uint32_t tmp;
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bool global;
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/*
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* NL80211_CMD_GET_REG contains an NL80211_ATTR_WIPHY iff the wiphy
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* uses a self-managed regulatory domain.
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*/
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global = nl80211_parse_attrs(msg, NL80211_ATTR_WIPHY, &tmp,
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NL80211_ATTR_UNSPEC) < 0;
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wiphy_update_reg_domain(wiphy, global, msg);
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}
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static void wiphy_get_reg_domain(struct wiphy *wiphy)
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{
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struct l_genl_msg *msg;
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msg = l_genl_msg_new(NL80211_CMD_GET_REG);
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l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY, 4, &wiphy->id);
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if (!l_genl_family_send(wiphy->nl80211, msg, wiphy_get_reg_cb, wiphy,
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NULL)) {
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l_error("Error sending NL80211_CMD_GET_REG for %s", wiphy->name);
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l_genl_msg_unref(msg);
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}
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}
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void wiphy_create_complete(struct wiphy *wiphy)
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void wiphy_create_complete(struct wiphy *wiphy)
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{
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{
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wiphy_register(wiphy);
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wiphy_register(wiphy);
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@ -1152,6 +1235,7 @@ void wiphy_create_complete(struct wiphy *wiphy)
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wiphy_set_station_capability_bits(wiphy);
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wiphy_set_station_capability_bits(wiphy);
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wiphy_setup_rm_enabled_capabilities(wiphy);
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wiphy_setup_rm_enabled_capabilities(wiphy);
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wiphy_get_reg_domain(wiphy);
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wiphy_print_basic_info(wiphy);
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wiphy_print_basic_info(wiphy);
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}
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}
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@ -1338,6 +1422,36 @@ static void setup_wiphy_interface(struct l_dbus_interface *interface)
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NULL);
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NULL);
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}
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}
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static void wiphy_reg_notify(struct l_genl_msg *msg, void *user_data)
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{
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uint8_t cmd = l_genl_msg_get_command(msg);
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l_debug("Notification of command %s(%u)",
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nl80211cmd_to_string(cmd), cmd);
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switch (cmd) {
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case NL80211_CMD_REG_CHANGE:
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wiphy_update_reg_domain(NULL, true, msg);
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break;
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case NL80211_CMD_WIPHY_REG_CHANGE:
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{
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uint32_t wiphy_id;
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struct wiphy *wiphy;
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if (nl80211_parse_attrs(msg, NL80211_ATTR_WIPHY, &wiphy_id,
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NL80211_ATTR_UNSPEC) < 0)
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break;
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wiphy = wiphy_find(wiphy_id);
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if (!wiphy)
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break;
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wiphy_update_reg_domain(wiphy, false, msg);
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break;
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}
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}
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}
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static int wiphy_init(void)
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static int wiphy_init(void)
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{
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{
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struct l_genl *genl = iwd_get_genl();
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struct l_genl *genl = iwd_get_genl();
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@ -1388,6 +1502,10 @@ static int wiphy_init(void)
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" value: %s", s);
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" value: %s", s);
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}
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}
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if (!l_genl_family_register(nl80211, NL80211_MULTICAST_GROUP_REG,
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wiphy_reg_notify, NULL, NULL))
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l_error("Registering for regulatory notifications failed");
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return 0;
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return 0;
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}
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}
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@ -80,6 +80,7 @@ const uint8_t *wiphy_get_permanent_address(struct wiphy *wiphy);
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const uint8_t *wiphy_get_extended_capabilities(struct wiphy *wiphy,
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const uint8_t *wiphy_get_extended_capabilities(struct wiphy *wiphy,
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uint32_t iftype);
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uint32_t iftype);
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const uint8_t *wiphy_get_rm_enabled_capabilities(struct wiphy *wiphy);
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const uint8_t *wiphy_get_rm_enabled_capabilities(struct wiphy *wiphy);
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void wiphy_get_reg_domain_country(struct wiphy *wiphy, char *out);
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void wiphy_generate_random_address(struct wiphy *wiphy, uint8_t addr[static 6]);
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void wiphy_generate_random_address(struct wiphy *wiphy, uint8_t addr[static 6]);
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void wiphy_generate_address_from_ssid(struct wiphy *wiphy, const char *ssid,
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void wiphy_generate_address_from_ssid(struct wiphy *wiphy, const char *ssid,
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