forked from Minki/linux
cfg80211: support FTM responder configuration/statistics
Allow userspace to enable fine timing measurement responder functionality with configurable lci/civic parameters in AP mode. This can be done at AP start or changing beacon parameters. A new EXT_FEATURE flag is introduced for drivers to advertise the capability. Also nl80211 API support for retrieving statistics is added. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> [remove unused cfg80211_ftm_responder_params, clarify docs, move validation into policy] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Pradeep Kumar Chitrapu
Johannes Berg
parent
7057f2496c
commit
81e54d08d9
@ -775,6 +775,12 @@ struct cfg80211_crypto_settings {
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* @assocresp_ies_len: length of assocresp_ies in octets
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* @probe_resp_len: length of probe response template (@probe_resp)
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* @probe_resp: probe response template (AP mode only)
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* @ftm_responder: enable FTM responder functionality; -1 for no change
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* (which also implies no change in LCI/civic location data)
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* @lci: LCI subelement content
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* @civicloc: Civic location subelement content
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* @lci_len: LCI data length
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* @civicloc_len: Civic location data length
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*/
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struct cfg80211_beacon_data {
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const u8 *head, *tail;
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@ -782,12 +788,17 @@ struct cfg80211_beacon_data {
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const u8 *proberesp_ies;
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const u8 *assocresp_ies;
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const u8 *probe_resp;
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const u8 *lci;
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const u8 *civicloc;
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s8 ftm_responder;
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size_t head_len, tail_len;
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size_t beacon_ies_len;
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size_t proberesp_ies_len;
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size_t assocresp_ies_len;
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size_t probe_resp_len;
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size_t lci_len;
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size_t civicloc_len;
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};
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struct mac_address {
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@ -2796,6 +2807,40 @@ struct cfg80211_external_auth_params {
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u16 status;
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};
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/**
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* cfg80211_ftm_responder_stats - FTM responder statistics
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*
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* @filled: bitflag of flags using the bits of &enum nl80211_ftm_stats to
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* indicate the relevant values in this struct for them
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* @success_num: number of FTM sessions in which all frames were successfully
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* answered
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* @partial_num: number of FTM sessions in which part of frames were
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* successfully answered
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* @failed_num: number of failed FTM sessions
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* @asap_num: number of ASAP FTM sessions
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* @non_asap_num: number of non-ASAP FTM sessions
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* @total_duration_ms: total sessions durations - gives an indication
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* of how much time the responder was busy
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* @unknown_triggers_num: number of unknown FTM triggers - triggers from
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* initiators that didn't finish successfully the negotiation phase with
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* the responder
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* @reschedule_requests_num: number of FTM reschedule requests - initiator asks
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* for a new scheduling although it already has scheduled FTM slot
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* @out_of_window_triggers_num: total FTM triggers out of scheduled window
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*/
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struct cfg80211_ftm_responder_stats {
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u32 filled;
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u32 success_num;
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u32 partial_num;
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u32 failed_num;
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u32 asap_num;
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u32 non_asap_num;
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u64 total_duration_ms;
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u32 unknown_triggers_num;
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u32 reschedule_requests_num;
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u32 out_of_window_triggers_num;
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};
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/**
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* struct cfg80211_ops - backend description for wireless configuration
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*
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@ -3128,6 +3173,9 @@ struct cfg80211_external_auth_params {
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*
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* @tx_control_port: TX a control port frame (EAPoL). The noencrypt parameter
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* tells the driver that the frame should not be encrypted.
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*
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* @get_ftm_responder_stats: Retrieve FTM responder statistics, if available.
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* Statistics should be cumulative, currently no way to reset is provided.
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*/
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struct cfg80211_ops {
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int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
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@ -3433,6 +3481,10 @@ struct cfg80211_ops {
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const u8 *buf, size_t len,
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const u8 *dest, const __be16 proto,
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const bool noencrypt);
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int (*get_ftm_responder_stats)(struct wiphy *wiphy,
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struct net_device *dev,
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struct cfg80211_ftm_responder_stats *ftm_stats);
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};
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/*
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@ -1033,6 +1033,9 @@
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* %NL80211_ATTR_CHANNEL_WIDTH,%NL80211_ATTR_NSS attributes with its
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* address(specified in %NL80211_ATTR_MAC).
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*
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* @NL80211_CMD_GET_FTM_RESPONDER_STATS: Retrieve FTM responder statistics, in
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* the %NL80211_ATTR_FTM_RESPONDER_STATS attribute.
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*
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* @NL80211_CMD_MAX: highest used command number
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* @__NL80211_CMD_AFTER_LAST: internal use
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*/
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@ -1245,6 +1248,8 @@ enum nl80211_commands {
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NL80211_CMD_CONTROL_PORT_FRAME,
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NL80211_CMD_GET_FTM_RESPONDER_STATS,
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/* add new commands above here */
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/* used to define NL80211_CMD_MAX below */
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@ -2241,6 +2246,14 @@ enum nl80211_commands {
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* association request when used with NL80211_CMD_NEW_STATION). Can be set
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* only if %NL80211_STA_FLAG_WME is set.
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*
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* @NL80211_ATTR_FTM_RESPONDER: nested attribute which user-space can include
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* in %NL80211_CMD_START_AP or %NL80211_CMD_SET_BEACON for fine timing
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* measurement (FTM) responder functionality and containing parameters as
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* possible, see &enum nl80211_ftm_responder_attr
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*
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* @NL80211_ATTR_FTM_RESPONDER_STATS: Nested attribute with FTM responder
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* statistics, see &enum nl80211_ftm_responder_stats.
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*
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* @NUM_NL80211_ATTR: total number of nl80211_attrs available
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* @NL80211_ATTR_MAX: highest attribute number currently defined
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* @__NL80211_ATTR_AFTER_LAST: internal use
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@ -2682,6 +2695,10 @@ enum nl80211_attrs {
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NL80211_ATTR_HE_CAPABILITY,
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NL80211_ATTR_FTM_RESPONDER,
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NL80211_ATTR_FTM_RESPONDER_STATS,
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/* add attributes here, update the policy in nl80211.c */
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__NL80211_ATTR_AFTER_LAST,
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@ -5225,6 +5242,8 @@ enum nl80211_feature_flags {
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* @NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT: Driver/device can omit all data
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* except for supported rates from the probe request content if requested
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* by the %NL80211_SCAN_FLAG_MIN_PREQ_CONTENT flag.
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* @NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER: Driver supports enabling fine
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* timing measurement responder role.
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*
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* @NL80211_EXT_FEATURE_CAN_REPLACE_PTK0: Driver/device confirm that they are
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* able to rekey an in-use key correctly. Userspace must not rekey PTK keys
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@ -5269,6 +5288,7 @@ enum nl80211_ext_feature_index {
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NL80211_EXT_FEATURE_SCAN_RANDOM_SN,
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NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT,
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NL80211_EXT_FEATURE_CAN_REPLACE_PTK0,
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NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER,
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/* add new features before the definition below */
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NUM_NL80211_EXT_FEATURES,
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@ -5808,4 +5828,74 @@ enum nl80211_external_auth_action {
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NL80211_EXTERNAL_AUTH_ABORT,
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};
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/**
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* enum nl80211_ftm_responder_attributes - fine timing measurement
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* responder attributes
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* @__NL80211_FTM_RESP_ATTR_INVALID: Invalid
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* @NL80211_FTM_RESP_ATTR_ENABLED: FTM responder is enabled
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* @NL80211_FTM_RESP_ATTR_LCI: The content of Measurement Report Element
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* (9.4.2.22 in 802.11-2016) with type 8 - LCI (9.4.2.22.10)
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* @NL80211_FTM_RESP_ATTR_CIVIC: The content of Measurement Report Element
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* (9.4.2.22 in 802.11-2016) with type 11 - Civic (Section 9.4.2.22.13)
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* @__NL80211_FTM_RESP_ATTR_LAST: Internal
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* @NL80211_FTM_RESP_ATTR_MAX: highest FTM responder attribute.
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*/
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enum nl80211_ftm_responder_attributes {
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__NL80211_FTM_RESP_ATTR_INVALID,
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NL80211_FTM_RESP_ATTR_ENABLED,
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NL80211_FTM_RESP_ATTR_LCI,
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NL80211_FTM_RESP_ATTR_CIVICLOC,
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/* keep last */
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__NL80211_FTM_RESP_ATTR_LAST,
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NL80211_FTM_RESP_ATTR_MAX = __NL80211_FTM_RESP_ATTR_LAST - 1,
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};
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/*
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* enum nl80211_ftm_responder_stats - FTM responder statistics
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*
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* These attribute types are used with %NL80211_ATTR_FTM_RESPONDER_STATS
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* when getting FTM responder statistics.
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*
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* @__NL80211_FTM_STATS_INVALID: attribute number 0 is reserved
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* @NL80211_FTM_STATS_SUCCESS_NUM: number of FTM sessions in which all frames
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* were ssfully answered (u32)
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* @NL80211_FTM_STATS_PARTIAL_NUM: number of FTM sessions in which part of the
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* frames were successfully answered (u32)
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* @NL80211_FTM_STATS_FAILED_NUM: number of failed FTM sessions (u32)
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* @NL80211_FTM_STATS_ASAP_NUM: number of ASAP sessions (u32)
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* @NL80211_FTM_STATS_NON_ASAP_NUM: number of non-ASAP sessions (u32)
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* @NL80211_FTM_STATS_TOTAL_DURATION_MSEC: total sessions durations - gives an
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* indication of how much time the responder was busy (u64, msec)
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* @NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM: number of unknown FTM triggers -
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* triggers from initiators that didn't finish successfully the negotiation
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* phase with the responder (u32)
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* @NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM: number of FTM reschedule requests
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* - initiator asks for a new scheduling although it already has scheduled
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* FTM slot (u32)
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* @NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM: number of FTM triggers out of
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* scheduled window (u32)
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* @NL80211_FTM_STATS_PAD: used for padding, ignore
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* @__NL80211_TXQ_ATTR_AFTER_LAST: Internal
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* @NL80211_FTM_STATS_MAX: highest possible FTM responder stats attribute
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*/
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enum nl80211_ftm_responder_stats {
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__NL80211_FTM_STATS_INVALID,
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NL80211_FTM_STATS_SUCCESS_NUM,
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NL80211_FTM_STATS_PARTIAL_NUM,
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NL80211_FTM_STATS_FAILED_NUM,
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NL80211_FTM_STATS_ASAP_NUM,
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NL80211_FTM_STATS_NON_ASAP_NUM,
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NL80211_FTM_STATS_TOTAL_DURATION_MSEC,
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NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM,
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NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM,
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NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM,
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NL80211_FTM_STATS_PAD,
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/* keep last */
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__NL80211_FTM_STATS_AFTER_LAST,
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NL80211_FTM_STATS_MAX = __NL80211_FTM_STATS_AFTER_LAST - 1
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};
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#endif /* __LINUX_NL80211_H */
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@ -201,6 +201,15 @@ cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
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}
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/* policy for the attributes */
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static const struct nla_policy
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nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
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[NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
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[NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
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.len = U8_MAX },
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[NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
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.len = U8_MAX },
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};
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static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
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[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
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@ -430,6 +439,11 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
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[NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
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[NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
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.len = NL80211_HE_MAX_CAPABILITY_LEN },
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[NL80211_ATTR_FTM_RESPONDER] = {
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.type = NLA_NESTED,
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.validation_data = nl80211_ftm_responder_policy,
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},
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};
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/* policy for the key attributes */
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@ -3989,10 +4003,12 @@ static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
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return 0;
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}
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static int nl80211_parse_beacon(struct nlattr *attrs[],
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static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
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struct nlattr *attrs[],
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struct cfg80211_beacon_data *bcn)
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{
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bool haveinfo = false;
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int err;
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if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
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!is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
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@ -4043,6 +4059,35 @@ static int nl80211_parse_beacon(struct nlattr *attrs[],
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bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
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}
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if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
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struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
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err = nla_parse_nested(tb, NL80211_FTM_RESP_ATTR_MAX,
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attrs[NL80211_ATTR_FTM_RESPONDER],
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NULL, NULL);
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if (err)
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return err;
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if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
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wiphy_ext_feature_isset(&rdev->wiphy,
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NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
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bcn->ftm_responder = 1;
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else
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return -EOPNOTSUPP;
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if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
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bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
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bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
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}
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if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
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bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
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bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
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}
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} else {
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bcn->ftm_responder = -1;
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}
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return 0;
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}
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@ -4189,7 +4234,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
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!info->attrs[NL80211_ATTR_BEACON_HEAD])
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return -EINVAL;
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err = nl80211_parse_beacon(info->attrs, ¶ms.beacon);
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err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon);
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if (err)
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return err;
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@ -4373,7 +4418,7 @@ static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
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if (!wdev->beacon_interval)
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return -EINVAL;
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err = nl80211_parse_beacon(info->attrs, ¶ms);
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err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
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if (err)
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return err;
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@ -7935,7 +7980,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
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if (!need_new_beacon)
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goto skip_beacons;
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err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after);
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err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
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if (err)
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return err;
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@ -7945,7 +7990,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
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if (err)
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return err;
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err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa);
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err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
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if (err)
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return err;
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@ -12984,6 +13029,76 @@ static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
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return err;
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}
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static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
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struct genl_info *info)
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{
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struct cfg80211_registered_device *rdev = info->user_ptr[0];
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struct net_device *dev = info->user_ptr[1];
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_ftm_responder_stats ftm_stats = {};
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struct sk_buff *msg;
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void *hdr;
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struct nlattr *ftm_stats_attr;
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int err;
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if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
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return -EOPNOTSUPP;
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err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
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if (err)
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return err;
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if (!ftm_stats.filled)
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return -ENODATA;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
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NL80211_CMD_GET_FTM_RESPONDER_STATS);
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if (!hdr)
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return -ENOBUFS;
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if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
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goto nla_put_failure;
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ftm_stats_attr = nla_nest_start(msg, NL80211_ATTR_FTM_RESPONDER_STATS);
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if (!ftm_stats_attr)
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goto nla_put_failure;
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|
||||
#define SET_FTM(field, name, type) \
|
||||
do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
|
||||
nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
|
||||
ftm_stats.field)) \
|
||||
goto nla_put_failure; } while (0)
|
||||
#define SET_FTM_U64(field, name) \
|
||||
do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
|
||||
nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
|
||||
ftm_stats.field, NL80211_FTM_STATS_PAD)) \
|
||||
goto nla_put_failure; } while (0)
|
||||
|
||||
SET_FTM(success_num, SUCCESS_NUM, u32);
|
||||
SET_FTM(partial_num, PARTIAL_NUM, u32);
|
||||
SET_FTM(failed_num, FAILED_NUM, u32);
|
||||
SET_FTM(asap_num, ASAP_NUM, u32);
|
||||
SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
|
||||
SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
|
||||
SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
|
||||
SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
|
||||
SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
|
||||
#undef SET_FTM
|
||||
|
||||
nla_nest_end(msg, ftm_stats_attr);
|
||||
|
||||
genlmsg_end(msg, hdr);
|
||||
return genlmsg_reply(msg, info);
|
||||
|
||||
nla_put_failure:
|
||||
nlmsg_free(msg);
|
||||
return -ENOBUFS;
|
||||
}
|
||||
|
||||
#define NL80211_FLAG_NEED_WIPHY 0x01
|
||||
#define NL80211_FLAG_NEED_NETDEV 0x02
|
||||
#define NL80211_FLAG_NEED_RTNL 0x04
|
||||
@ -13895,6 +14010,13 @@ static const struct genl_ops nl80211_ops[] = {
|
||||
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
|
||||
NL80211_FLAG_NEED_RTNL,
|
||||
},
|
||||
{
|
||||
.cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
|
||||
.doit = nl80211_get_ftm_responder_stats,
|
||||
.policy = nl80211_policy,
|
||||
.internal_flags = NL80211_FLAG_NEED_NETDEV |
|
||||
NL80211_FLAG_NEED_RTNL,
|
||||
},
|
||||
};
|
||||
|
||||
static struct genl_family nl80211_fam __ro_after_init = {
|
||||
|
||||
@ -1232,4 +1232,19 @@ rdev_external_auth(struct cfg80211_registered_device *rdev,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline int
|
||||
rdev_get_ftm_responder_stats(struct cfg80211_registered_device *rdev,
|
||||
struct net_device *dev,
|
||||
struct cfg80211_ftm_responder_stats *ftm_stats)
|
||||
{
|
||||
int ret = -EOPNOTSUPP;
|
||||
|
||||
trace_rdev_get_ftm_responder_stats(&rdev->wiphy, dev, ftm_stats);
|
||||
if (rdev->ops->get_ftm_responder_stats)
|
||||
ret = rdev->ops->get_ftm_responder_stats(&rdev->wiphy, dev,
|
||||
ftm_stats);
|
||||
trace_rdev_return_int(&rdev->wiphy, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif /* __CFG80211_RDEV_OPS */
|
||||
|
||||
@ -3250,6 +3250,50 @@ DEFINE_EVENT(wiphy_wdev_evt, rdev_get_txq_stats,
|
||||
TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
|
||||
TP_ARGS(wiphy, wdev)
|
||||
);
|
||||
|
||||
TRACE_EVENT(rdev_get_ftm_responder_stats,
|
||||
TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
|
||||
struct cfg80211_ftm_responder_stats *ftm_stats),
|
||||
|
||||
TP_ARGS(wiphy, netdev, ftm_stats),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
WIPHY_ENTRY
|
||||
NETDEV_ENTRY
|
||||
__field(u64, timestamp)
|
||||
__field(u32, success_num)
|
||||
__field(u32, partial_num)
|
||||
__field(u32, failed_num)
|
||||
__field(u32, asap_num)
|
||||
__field(u32, non_asap_num)
|
||||
__field(u64, duration)
|
||||
__field(u32, unknown_triggers)
|
||||
__field(u32, reschedule)
|
||||
__field(u32, out_of_window)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
WIPHY_ASSIGN;
|
||||
NETDEV_ASSIGN;
|
||||
__entry->success_num = ftm_stats->success_num;
|
||||
__entry->partial_num = ftm_stats->partial_num;
|
||||
__entry->failed_num = ftm_stats->failed_num;
|
||||
__entry->asap_num = ftm_stats->asap_num;
|
||||
__entry->non_asap_num = ftm_stats->non_asap_num;
|
||||
__entry->duration = ftm_stats->total_duration_ms;
|
||||
__entry->unknown_triggers = ftm_stats->unknown_triggers_num;
|
||||
__entry->reschedule = ftm_stats->reschedule_requests_num;
|
||||
__entry->out_of_window = ftm_stats->out_of_window_triggers_num;
|
||||
),
|
||||
|
||||
TP_printk(WIPHY_PR_FMT "Ftm responder stats: success %u, partial %u, "
|
||||
"failed %u, asap %u, non asap %u, total duration %llu, unknown "
|
||||
"triggers %u, rescheduled %u, out of window %u", WIPHY_PR_ARG,
|
||||
__entry->success_num, __entry->partial_num, __entry->failed_num,
|
||||
__entry->asap_num, __entry->non_asap_num, __entry->duration,
|
||||
__entry->unknown_triggers, __entry->reschedule,
|
||||
__entry->out_of_window)
|
||||
);
|
||||
#endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */
|
||||
|
||||
#undef TRACE_INCLUDE_PATH
|
||||
|
||||
Loading…
Reference in New Issue
Block a user