diff options
| -rw-r--r-- | include/net/cfg80211.h | 263 | ||||
| -rw-r--r-- | include/uapi/linux/nl80211.h | 418 | ||||
| -rw-r--r-- | net/wireless/Makefile | 1 | ||||
| -rw-r--r-- | net/wireless/core.c | 34 | ||||
| -rw-r--r-- | net/wireless/core.h | 5 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 192 | ||||
| -rw-r--r-- | net/wireless/nl80211.h | 32 | ||||
| -rw-r--r-- | net/wireless/pmsr.c | 590 | ||||
| -rw-r--r-- | net/wireless/rdev-ops.h | 25 | ||||
| -rw-r--r-- | net/wireless/trace.h | 68 |
10 files changed, 1609 insertions, 19 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 1fa41b7a1be3..c21c5c70a2fd 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2849,6 +2849,190 @@ struct cfg80211_ftm_responder_stats { }; /** + * struct cfg80211_pmsr_ftm_result - FTM result + * @failure_reason: if this measurement failed (PMSR status is + * %NL80211_PMSR_STATUS_FAILURE), this gives a more precise + * reason than just "failure" + * @burst_index: if reporting partial results, this is the index + * in [0 .. num_bursts-1] of the burst that's being reported + * @num_ftmr_attempts: number of FTM request frames transmitted + * @num_ftmr_successes: number of FTM request frames acked + * @busy_retry_time: if failure_reason is %NL80211_PMSR_FTM_FAILURE_PEER_BUSY, + * fill this to indicate in how many seconds a retry is deemed possible + * by the responder + * @num_bursts_exp: actual number of bursts exponent negotiated + * @burst_duration: actual burst duration negotiated + * @ftms_per_burst: actual FTMs per burst negotiated + * @lci_len: length of LCI information (if present) + * @civicloc_len: length of civic location information (if present) + * @lci: LCI data (may be %NULL) + * @civicloc: civic location data (may be %NULL) + * @rssi_avg: average RSSI over FTM action frames reported + * @rssi_spread: spread of the RSSI over FTM action frames reported + * @tx_rate: bitrate for transmitted FTM action frame response + * @rx_rate: bitrate of received FTM action frame + * @rtt_avg: average of RTTs measured (must have either this or @dist_avg) + * @rtt_variance: variance of RTTs measured (note that standard deviation is + * the square root of the variance) + * @rtt_spread: spread of the RTTs measured + * @dist_avg: average of distances (mm) measured + * (must have either this or @rtt_avg) + * @dist_variance: variance of distances measured (see also @rtt_variance) + * @dist_spread: spread of distances measured (see also @rtt_spread) + * @num_ftmr_attempts_valid: @num_ftmr_attempts is valid + * @num_ftmr_successes_valid: @num_ftmr_successes is valid + * @rssi_avg_valid: @rssi_avg is valid + * @rssi_spread_valid: @rssi_spread is valid + * @tx_rate_valid: @tx_rate is valid + * @rx_rate_valid: @rx_rate is valid + * @rtt_avg_valid: @rtt_avg is valid + * @rtt_variance_valid: @rtt_variance is valid + * @rtt_spread_valid: @rtt_spread is valid + * @dist_avg_valid: @dist_avg is valid + * @dist_variance_valid: @dist_variance is valid + * @dist_spread_valid: @dist_spread is valid + */ +struct cfg80211_pmsr_ftm_result { + const u8 *lci; + const u8 *civicloc; + unsigned int lci_len; + unsigned int civicloc_len; + enum nl80211_peer_measurement_ftm_failure_reasons failure_reason; + u32 num_ftmr_attempts, num_ftmr_successes; + s16 burst_index; + u8 busy_retry_time; + u8 num_bursts_exp; + u8 burst_duration; + u8 ftms_per_burst; + s32 rssi_avg; + s32 rssi_spread; + struct rate_info tx_rate, rx_rate; + s64 rtt_avg; + s64 rtt_variance; + s64 rtt_spread; + s64 dist_avg; + s64 dist_variance; + s64 dist_spread; + + u16 num_ftmr_attempts_valid:1, + num_ftmr_successes_valid:1, + rssi_avg_valid:1, + rssi_spread_valid:1, + tx_rate_valid:1, + rx_rate_valid:1, + rtt_avg_valid:1, + rtt_variance_valid:1, + rtt_spread_valid:1, + dist_avg_valid:1, + dist_variance_valid:1, + dist_spread_valid:1; +}; + +/** + * struct cfg80211_pmsr_result - peer measurement result + * @addr: address of the peer + * @host_time: host time (use ktime_get_boottime() adjust to the time when the + * measurement was made) + * @ap_tsf: AP's TSF at measurement time + * @status: status of the measurement + * @final: if reporting partial results, mark this as the last one; if not + * reporting partial results always set this flag + * @ap_tsf_valid: indicates the @ap_tsf value is valid + * @type: type of the measurement reported, note that we only support reporting + * one type at a time, but you can report multiple results separately and + * they're all aggregated for userspace. + */ +struct cfg80211_pmsr_result { + u64 host_time, ap_tsf; + enum nl80211_peer_measurement_status status; + + u8 addr[ETH_ALEN]; + + u8 final:1, + ap_tsf_valid:1; + + enum nl80211_peer_measurement_type type; + + union { + struct cfg80211_pmsr_ftm_result ftm; + }; +}; + +/** + * struct cfg80211_pmsr_ftm_request_peer - FTM request data + * @requested: indicates FTM is requested + * @preamble: frame preamble to use + * @burst_period: burst period to use + * @asap: indicates to use ASAP mode + * @num_bursts_exp: number of bursts exponent + * @burst_duration: burst duration + * @ftms_per_burst: number of FTMs per burst + * @ftmr_retries: number of retries for FTM request + * @request_lci: request LCI information + * @request_civicloc: request civic location information + * + * See also nl80211 for the respective attribute documentation. + */ +struct cfg80211_pmsr_ftm_request_peer { + enum nl80211_preamble preamble; + u16 burst_period; + u8 requested:1, + asap:1, + request_lci:1, + request_civicloc:1; + u8 num_bursts_exp; + u8 burst_duration; + u8 ftms_per_burst; + u8 ftmr_retries; +}; + +/** + * struct cfg80211_pmsr_request_peer - peer data for a peer measurement request + * @addr: MAC address + * @chandef: channel to use + * @report_ap_tsf: report the associated AP's TSF + * @ftm: FTM data, see &struct cfg80211_pmsr_ftm_request_peer + */ +struct cfg80211_pmsr_request_peer { + u8 addr[ETH_ALEN]; + struct cfg80211_chan_def chandef; + u8 report_ap_tsf:1; + struct cfg80211_pmsr_ftm_request_peer ftm; +}; + +/** + * struct cfg80211_pmsr_request - peer measurement request + * @cookie: cookie, set by cfg80211 + * @nl_portid: netlink portid - used by cfg80211 + * @drv_data: driver data for this request, if required for aborting, + * not otherwise freed or anything by cfg80211 + * @mac_addr: MAC address used for (randomised) request + * @mac_addr_mask: MAC address mask used for randomisation, bits that + * are 0 in the mask should be randomised, bits that are 1 should + * be taken from the @mac_addr + * @list: used by cfg80211 to hold on to the request + * @timeout: timeout (in milliseconds) for the whole operation, if + * zero it means there's no timeout + * @n_peers: number of peers to do measurements with + * @peers: per-peer measurement request data + */ +struct cfg80211_pmsr_request { + u64 cookie; + void *drv_data; + u32 n_peers; + u32 nl_portid; + + u32 timeout; + + u8 mac_addr[ETH_ALEN] __aligned(2); + u8 mac_addr_mask[ETH_ALEN] __aligned(2); + + struct list_head list; + + struct cfg80211_pmsr_request_peer peers[]; +}; + +/** * struct cfg80211_ops - backend description for wireless configuration * * This struct is registered by fullmac card drivers and/or wireless stacks @@ -3183,6 +3367,8 @@ struct cfg80211_ftm_responder_stats { * * @get_ftm_responder_stats: Retrieve FTM responder statistics, if available. * Statistics should be cumulative, currently no way to reset is provided. + * @start_pmsr: start peer measurement (e.g. FTM) + * @abort_pmsr: abort peer measurement */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); @@ -3492,6 +3678,11 @@ struct cfg80211_ops { int (*get_ftm_responder_stats)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ftm_responder_stats *ftm_stats); + + int (*start_pmsr)(struct wiphy *wiphy, struct wireless_dev *wdev, + struct cfg80211_pmsr_request *request); + void (*abort_pmsr)(struct wiphy *wiphy, struct wireless_dev *wdev, + struct cfg80211_pmsr_request *request); }; /* @@ -3864,6 +4055,42 @@ struct wiphy_iftype_ext_capab { }; /** + * struct cfg80211_pmsr_capabilities - cfg80211 peer measurement capabilities + * @max_peers: maximum number of peers in a single measurement + * @report_ap_tsf: can report assoc AP's TSF for radio resource measurement + * @randomize_mac_addr: can randomize MAC address for measurement + * @ftm.supported: FTM measurement is supported + * @ftm.asap: ASAP-mode is supported + * @ftm.non_asap: non-ASAP-mode is supported + * @ftm.request_lci: can request LCI data + * @ftm.request_civicloc: can request civic location data + * @ftm.preambles: bitmap of preambles supported (&enum nl80211_preamble) + * @ftm.bandwidths: bitmap of bandwidths supported (&enum nl80211_chan_width) + * @ftm.max_bursts_exponent: maximum burst exponent supported + * (set to -1 if not limited; note that setting this will necessarily + * forbid using the value 15 to let the responder pick) + * @ftm.max_ftms_per_burst: maximum FTMs per burst supported (set to 0 if + * not limited) + */ +struct cfg80211_pmsr_capabilities { + unsigned int max_peers; + u8 report_ap_tsf:1, + randomize_mac_addr:1; + + struct { + u32 preambles; + u32 bandwidths; + s8 max_bursts_exponent; + u8 max_ftms_per_burst; + u8 supported:1, + asap:1, + non_asap:1, + request_lci:1, + request_civicloc:1; + } ftm; +}; + +/** * struct wiphy - wireless hardware description * @reg_notifier: the driver's regulatory notification callback, * note that if your driver uses wiphy_apply_custom_regulatory() @@ -4027,6 +4254,8 @@ struct wiphy_iftype_ext_capab { * @txq_limit: configuration of internal TX queue frame limit * @txq_memory_limit: configuration internal TX queue memory limit * @txq_quantum: configuration of internal TX queue scheduler quantum + * + * @pmsr_capa: peer measurement capabilities */ struct wiphy { /* assign these fields before you register the wiphy */ @@ -4163,6 +4392,8 @@ struct wiphy { u32 txq_memory_limit; u32 txq_quantum; + const struct cfg80211_pmsr_capabilities *pmsr_capa; + char priv[0] __aligned(NETDEV_ALIGN); }; @@ -4365,6 +4596,9 @@ struct cfg80211_cqm_config; * @owner_nlportid: (private) owner socket port ID * @nl_owner_dead: (private) owner socket went away * @cqm_config: (private) nl80211 RSSI monitor state + * @pmsr_list: (private) peer measurement requests + * @pmsr_lock: (private) peer measurements requests/results lock + * @pmsr_free_wk: (private) peer measurements cleanup work */ struct wireless_dev { struct wiphy *wiphy; @@ -4436,6 +4670,10 @@ struct wireless_dev { #endif struct cfg80211_cqm_config *cqm_config; + + struct list_head pmsr_list; + spinlock_t pmsr_lock; + struct work_struct pmsr_free_wk; }; static inline u8 *wdev_address(struct wireless_dev *wdev) @@ -6630,6 +6868,31 @@ int cfg80211_external_auth_request(struct net_device *netdev, struct cfg80211_external_auth_params *params, gfp_t gfp); +/** + * cfg80211_pmsr_report - report peer measurement result data + * @wdev: the wireless device reporting the measurement + * @req: the original measurement request + * @result: the result data + * @gfp: allocation flags + */ +void cfg80211_pmsr_report(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + struct cfg80211_pmsr_result *result, + gfp_t gfp); + +/** + * cfg80211_pmsr_complete - report peer measurement completed + * @wdev: the wireless device reporting the measurement + * @req: the original measurement request + * @gfp: allocation flags + * + * Report that the entire measurement completed, after this + * the request pointer will no longer be valid. + */ +void cfg80211_pmsr_complete(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + gfp_t gfp); + /* Logging, debugging and troubleshooting/diagnostic helpers. */ /* wiphy_printk helpers, similar to dev_printk */ diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 6d610bae30a9..e45b88925783 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -1036,6 +1036,30 @@ * @NL80211_CMD_GET_FTM_RESPONDER_STATS: Retrieve FTM responder statistics, in * the %NL80211_ATTR_FTM_RESPONDER_STATS attribute. * + * @NL80211_CMD_PEER_MEASUREMENT_START: start a (set of) peer measurement(s) + * with the given parameters, which are encapsulated in the nested + * %NL80211_ATTR_PEER_MEASUREMENTS attribute. Optionally, MAC address + * randomization may be enabled and configured by specifying the + * %NL80211_ATTR_MAC and %NL80211_ATTR_MAC_MASK attributes. + * If a timeout is requested, use the %NL80211_ATTR_TIMEOUT attribute. + * A u64 cookie for further %NL80211_ATTR_COOKIE use is is returned in + * the netlink extended ack message. + * + * To cancel a measurement, close the socket that requested it. + * + * Measurement results are reported to the socket that requested the + * measurement using @NL80211_CMD_PEER_MEASUREMENT_RESULT when they + * become available, so applications must ensure a large enough socket + * buffer size. + * + * Depending on driver support it may or may not be possible to start + * multiple concurrent measurements. + * @NL80211_CMD_PEER_MEASUREMENT_RESULT: This command number is used for the + * result notification from the driver to the requesting socket. + * @NL80211_CMD_PEER_MEASUREMENT_COMPLETE: Notification only, indicating that + * the measurement completed, using the measurement cookie + * (%NL80211_ATTR_COOKIE). + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -1250,6 +1274,10 @@ enum nl80211_commands { NL80211_CMD_GET_FTM_RESPONDER_STATS, + NL80211_CMD_PEER_MEASUREMENT_START, + NL80211_CMD_PEER_MEASUREMENT_RESULT, + NL80211_CMD_PEER_MEASUREMENT_COMPLETE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -2254,6 +2282,16 @@ enum nl80211_commands { * @NL80211_ATTR_FTM_RESPONDER_STATS: Nested attribute with FTM responder * statistics, see &enum nl80211_ftm_responder_stats. * + * @NL80211_ATTR_TIMEOUT: Timeout for the given operation in milliseconds (u32), + * if the attribute is not given no timeout is requested. Note that 0 is an + * invalid value. + * + * @NL80211_ATTR_PEER_MEASUREMENTS: peer measurements request (and result) + * data, uses nested attributes specified in + * &enum nl80211_peer_measurement_attrs. + * This is also used for capability advertisement in the wiphy information, + * with the appropriate sub-attributes. + * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -2699,6 +2737,10 @@ enum nl80211_attrs { NL80211_ATTR_FTM_RESPONDER_STATS, + NL80211_ATTR_TIMEOUT, + + NL80211_ATTR_PEER_MEASUREMENTS, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -5906,4 +5948,380 @@ enum nl80211_ftm_responder_stats { NL80211_FTM_STATS_MAX = __NL80211_FTM_STATS_AFTER_LAST - 1 }; +/** + * enum nl80211_preamble - frame preamble types + * @NL80211_PREAMBLE_LEGACY: legacy (HR/DSSS, OFDM, ERP PHY) preamble + * @NL80211_PREAMBLE_HT: HT preamble + * @NL80211_PREAMBLE_VHT: VHT preamble + * @NL80211_PREAMBLE_DMG: DMG preamble + */ +enum nl80211_preamble { + NL80211_PREAMBLE_LEGACY, + NL80211_PREAMBLE_HT, + NL80211_PREAMBLE_VHT, + NL80211_PREAMBLE_DMG, +}; + +/** + * enum nl80211_peer_measurement_type - peer measurement types + * @NL80211_PMSR_TYPE_INVALID: invalid/unused, needed as we use + * these numbers also for attributes + * + * @NL80211_PMSR_TYPE_FTM: flight time measurement + * + * @NUM_NL80211_PMSR_TYPES: internal + * @NL80211_PMSR_TYPE_MAX: highest type number + */ +enum nl80211_peer_measurement_type { + NL80211_PMSR_TYPE_INVALID, + + NL80211_PMSR_TYPE_FTM, + + NUM_NL80211_PMSR_TYPES, + NL80211_PMSR_TYPE_MAX = NUM_NL80211_PMSR_TYPES - 1 +}; + +/** + * enum nl80211_peer_measurement_status - peer measurement status + * @NL80211_PMSR_STATUS_SUCCESS: measurement completed successfully + * @NL80211_PMSR_STATUS_REFUSED: measurement was locally refused + * @NL80211_PMSR_STATUS_TIMEOUT: measurement timed out + * @NL80211_PMSR_STATUS_FAILURE: measurement failed, a type-dependent + * reason may be available in the response data + */ +enum nl80211_peer_measurement_status { + NL80211_PMSR_STATUS_SUCCESS, + NL80211_PMSR_STATUS_REFUSED, + NL80211_PMSR_STATUS_TIMEOUT, + NL80211_PMSR_STATUS_FAILURE, +}; + +/** + * enum nl80211_peer_measurement_req - peer measurement request attributes + * @__NL80211_PMSR_REQ_ATTR_INVALID: invalid + * + * @NL80211_PMSR_REQ_ATTR_DATA: This is a nested attribute with measurement + * type-specific request data inside. The attributes used are from the + * enums named nl80211_peer_measurement_<type>_req. + * @NL80211_PMSR_REQ_ATTR_GET_AP_TSF: include AP TSF timestamp, if supported + * (flag attribute) + * + * @NUM_NL80211_PMSR_REQ_ATTRS: internal + * @NL80211_PMSR_REQ_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_req { + __NL80211_PMSR_REQ_ATTR_INVALID, + + NL80211_PMSR_REQ_ATTR_DATA, + NL80211_PMSR_REQ_ATTR_GET_AP_TSF, + + /* keep last */ + NUM_NL80211_PMSR_REQ_ATTRS, + NL80211_PMSR_REQ_ATTR_MAX = NUM_NL80211_PMSR_REQ_ATTRS - 1 +}; + +/** + * enum nl80211_peer_measurement_resp - peer measurement response attributes + * @__NL80211_PMSR_RESP_ATTR_INVALID: invalid + * + * @NL80211_PMSR_RESP_ATTR_DATA: This is a nested attribute with measurement + * type-specific results inside. The attributes used are from the enums + * named nl80211_peer_measurement_<type>_resp. + * @NL80211_PMSR_RESP_ATTR_STATUS: u32 value with the measurement status + * (using values from &enum nl80211_peer_measurement_status.) + * @NL80211_PMSR_RESP_ATTR_HOST_TIME: host time (%CLOCK_BOOTTIME) when the + * result was measured; this value is not expected to be accurate to + * more than 20ms. (u64, nanoseconds) + * @NL80211_PMSR_RESP_ATTR_AP_TSF: TSF of the AP that the interface + * doing the measurement is connected to when the result was measured. + * This shall be accurately reported if supported and requested + * (u64, usec) + * @NL80211_PMSR_RESP_ATTR_FINAL: If results are sent to the host partially + * (*e.g. with FTM per-burst data) this flag will be cleared on all but + * the last result; if all results are combined it's set on the single + * result. + * @NL80211_PMSR_RESP_ATTR_PAD: padding for 64-bit attributes, ignore + * + * @NUM_NL80211_PMSR_RESP_ATTRS: internal + * @NL80211_PMSR_RESP_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_resp { + __NL80211_PMSR_RESP_ATTR_INVALID, + + NL80211_PMSR_RESP_ATTR_DATA, + NL80211_PMSR_RESP_ATTR_STATUS, + NL80211_PMSR_RESP_ATTR_HOST_TIME, + NL80211_PMSR_RESP_ATTR_AP_TSF, + NL80211_PMSR_RESP_ATTR_FINAL, + NL80211_PMSR_RESP_ATTR_PAD, + + /* keep last */ + NUM_NL80211_PMSR_RESP_ATTRS, + NL80211_PMSR_RESP_ATTR_MAX = NUM_NL80211_PMSR_RESP_ATTRS - 1 +}; + +/** + * enum nl80211_peer_measurement_peer_attrs - peer attributes for measurement + * @__NL80211_PMSR_PEER_ATTR_INVALID: invalid + * + * @NL80211_PMSR_PEER_ATTR_ADDR: peer's MAC address + * @NL80211_PMSR_PEER_ATTR_CHAN: channel definition, nested, using top-level + * attributes like %NL80211_ATTR_WIPHY_FREQ etc. + * @NL80211_PMSR_PEER_ATTR_REQ: This is a nested attribute indexed by + * measurement type, with attributes from the + * &enum nl80211_peer_measurement_req inside. + * @NL80211_PMSR_PEER_ATTR_RESP: This is a nested attribute indexed by + * measurement type, with attributes from the + * &enum nl80211_peer_measurement_resp inside. + * + * @NUM_NL80211_PMSR_PEER_ATTRS: internal + * @NL80211_PMSR_PEER_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_peer_attrs { + __NL80211_PMSR_PEER_ATTR_INVALID, + + NL80211_PMSR_PEER_ATTR_ADDR, + NL80211_PMSR_PEER_ATTR_CHAN, + NL80211_PMSR_PEER_ATTR_REQ, + NL80211_PMSR_PEER_ATTR_RESP, + + /* keep last */ + NUM_NL80211_PMSR_PEER_ATTRS, + NL80211_PMSR_PEER_ATTR_MAX = NUM_NL80211_PMSR_PEER_ATTRS - 1, +}; + +/** + * enum nl80211_peer_measurement_attrs - peer measurement attributes + * @__NL80211_PMSR_ATTR_INVALID: invalid + * + * @NL80211_PMSR_ATTR_MAX_PEERS: u32 attribute used for capability + * advertisement only, indicates the maximum number of peers + * measurements can be done with in a single request + * @NL80211_PMSR_ATTR_REPORT_AP_TSF: flag attribute in capability + * indicating that the connected AP's TSF can be reported in + * measurement results + * @NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR: flag attribute in capability + * indicating that MAC address randomization is supported. + * @NL80211_PMSR_ATTR_TYPE_CAPA: capabilities reported by the device, + * this contains a nesting indexed by measurement type, and + * type-specific capabilities inside, which are from the enums + * named nl80211_peer_measurement_<type>_capa. + * @NL80211_PMSR_ATTR_PEERS: nested attribute, the nesting index is + * meaningless, just a list of peers to measure with, with the + * sub-attributes taken from + * &enum nl80211_peer_measurement_peer_attrs. + * + * @NUM_NL80211_PMSR_ATTR: internal + * @NL80211_PMSR_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_attrs { + __NL80211_PMSR_ATTR_INVALID, + + NL80211_PMSR_ATTR_MAX_PEERS, + NL80211_PMSR_ATTR_REPORT_AP_TSF, + NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR, + NL80211_PMSR_ATTR_TYPE_CAPA, + NL80211_PMSR_ATTR_PEERS, + + /* keep last */ + NUM_NL80211_PMSR_ATTR, + NL80211_PMSR_ATTR_MAX = NUM_NL80211_PMSR_ATTR - 1 +}; + +/** + * enum nl80211_peer_measurement_ftm_capa - FTM capabilities + * @__NL80211_PMSR_FTM_CAPA_ATTR_INVALID: invalid + * + * @NL80211_PMSR_FTM_CAPA_ATTR_ASAP: flag attribute indicating ASAP mode + * is supported + * @NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP: flag attribute indicating non-ASAP + * mode is supported + * @NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI: flag attribute indicating if LCI + * data can be requested during the measurement + * @NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC: flag attribute indicating if civic + * location data can be requested during the measurement + * @NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES: u32 bitmap attribute of bits + * from &enum nl80211_preamble. + * @NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS: bitmap of values from + * &enum nl80211_chan_width indicating the supported channel + * bandwidths for FTM. Note that a higher channel bandwidth may be + * configured to allow for other measurements types with different + * bandwidth requirement in the same measurement. + * @NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT: u32 attribute indicating + * the maximum bursts exponent that can be used (if not present anything + * is valid) + * @NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST: u32 attribute indicating + * the maximum FTMs per burst (if not present anything is valid) + * + * @NUM_NL80211_PMSR_FTM_CAPA_ATTR: internal + * @NL80211_PMSR_FTM_CAPA_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_ftm_capa { + __NL80211_PMSR_FTM_CAPA_ATTR_INVALID, + + NL80211_PMSR_FTM_CAPA_ATTR_ASAP, + NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP, + NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI, + NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC, + NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES, + NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS, + NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT, + NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST, + + /* keep last */ + NUM_NL80211_PMSR_FTM_CAPA_ATTR, + NL80211_PMSR_FTM_CAPA_ATTR_MAX = NUM_NL80211_PMSR_FTM_CAPA_ATTR - 1 +}; + +/** + * enum nl80211_peer_measurement_ftm_req - FTM request attributes + * @__NL80211_PMSR_FTM_REQ_ATTR_INVALID: invalid + * + * @NL80211_PMSR_FTM_REQ_ATTR_ASAP: ASAP mode requested (flag) + * @NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE: preamble type (see + * &enum nl80211_preamble), optional for DMG (u32) + * @NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP: number of bursts exponent as in + * 802.11-2016 9.4.2.168 "Fine Timing Measurement Parameters element" + * (u8, 0-15, optional with default 15 i.e. "no preference") + * @NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD: interval between bursts in units + * of 100ms (u16, optional with default 0) + * @NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION: burst duration, as in 802.11-2016 + * Table 9-257 "Burst Duration field encoding" (u8, 0-15, optional with + * default 15 i.e. "no preference") + * @NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST: number of successful FTM frames + * requested per burst + * (u8, 0-31, optional with default 0 i.e. "no preference") + * @NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES: number of FTMR frame retries + * (u8, default 3) + * @NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI: request LCI data (flag) + * @NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC: request civic location data + * (flag) + * + * @NUM_NL80211_PMSR_FTM_REQ_ATTR: internal + * @NL80211_PMSR_FTM_REQ_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_ftm_req { + __NL80211_PMSR_FTM_REQ_ATTR_INVALID, + + NL80211_PMSR_FTM_REQ_ATTR_ASAP, + NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE, + NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP, + NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD, + NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION, + NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST, + NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES, + NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI, + NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC, + + /* keep last */ + NUM_NL80211_PMSR_FTM_REQ_ATTR, + NL80211_PMSR_FTM_REQ_ATTR_MAX = NUM_NL80211_PMSR_FTM_REQ_ATTR - 1 +}; + +/** + * enum nl80211_peer_measurement_ftm_failure_reasons - FTM failure reasons + * @NL80211_PMSR_FTM_FAILURE_UNSPECIFIED: unspecified failure, not used + * @NL80211_PMSR_FTM_FAILURE_NO_RESPONSE: no response from the FTM responder + * @NL80211_PMSR_FTM_FAILURE_REJECTED: FTM responder rejected measurement + * @NL80211_PMSR_FTM_FAILURE_WRONG_CHANNEL: we already know the peer is + * on a different channel, so can't measure (if we didn't know, we'd + * try and get no response) + * @NL80211_PMSR_FTM_FAILURE_PEER_NOT_CAPABLE: peer can't actually do FTM + * @NL80211_PMSR_FTM_FAILURE_INVALID_TIMESTAMP: invalid T1/T4 timestamps + * received + * @NL80211_PMSR_FTM_FAILURE_PEER_BUSY: peer reports busy, you may retry + * later (see %NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME) + * @NL80211_PMSR_FTM_FAILURE_BAD_CHANGED_PARAMS: parameters were changed + * by the peer and are no longer supported + */ +enum nl80211_peer_measurement_ftm_failure_reasons { + NL80211_PMSR_FTM_FAILURE_UNSPECIFIED, + NL80211_PMSR_FTM_FAILURE_NO_RESPONSE, + NL80211_PMSR_FTM_FAILURE_REJECTED, + NL80211_PMSR_FTM_FAILURE_WRONG_CHANNEL, + NL80211_PMSR_FTM_FAILURE_PEER_NOT_CAPABLE, + NL80211_PMSR_FTM_FAILURE_INVALID_TIMESTAMP, + NL80211_PMSR_FTM_FAILURE_PEER_BUSY, + NL80211_PMSR_FTM_FAILURE_BAD_CHANGED_PARAMS, +}; + +/** + * enum nl80211_peer_measurement_ftm_resp - FTM response attributes + * @__NL80211_PMSR_FTM_RESP_ATTR_INVALID: invalid + * + * @NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON: FTM-specific failure reason + * (u32, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_BURST_INDEX: optional, if bursts are reported + * as separate results then it will be the burst index 0...(N-1) and + * the top level will indicate partial results (u32) + * @NL80211_PMSR_FTM_RESP_ATTR_NUM_FTMR_ATTEMPTS: number of FTM Request frames + * transmitted (u32, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_NUM_FTMR_SUCCESSES: number of FTM Request frames + * that were acknowleged (u32, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME: retry time received from the + * busy peer (u32, seconds) + * @NL80211_PMSR_FTM_RESP_ATTR_NUM_BURSTS_EXP: actual number of bursts exponent + * used by the responder (similar to request, u8) + * @NL80211_PMSR_FTM_RESP_ATTR_BURST_DURATION: actual burst duration used by + * the responder (similar to request, u8) + * @NL80211_PMSR_FTM_RESP_ATTR_FTMS_PER_BURST: actual FTMs per burst used + * by the responder (similar to request, u8) + * @NL80211_PMSR_FTM_RESP_ATTR_RSSI_AVG: average RSSI across all FTM action + * frames (optional, s32, 1/2 dBm) + * @NL80211_PMSR_FTM_RESP_ATTR_RSSI_SPREAD: RSSI spread across all FTM action + * frames (optional, s32, 1/2 dBm) + * @NL80211_PMSR_FTM_RESP_ATTR_TX_RATE: bitrate we used for the response to the + * FTM action frame (optional, nested, using &enum nl80211_rate_info + * attributes) + * @NL80211_PMSR_FTM_RESP_ATTR_RX_RATE: bitrate the responder used for the FTM + * action frame (optional, nested, using &enum nl80211_rate_info attrs) + * @NL80211_PMSR_FTM_RESP_ATTR_RTT_AVG: average RTT (s64, picoseconds, optional + * but one of RTT/DIST must be present) + * @NL80211_PMSR_FTM_RESP_ATTR_RTT_VARIANCE: RTT variance (u64, ps^2, note that + * standard deviation is the square root of variance, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_RTT_SPREAD: RTT spread (u64, picoseconds, + * optional) + * @NL80211_PMSR_FTM_RESP_ATTR_DIST_AVG: average distance (s64, mm, optional + * but one of RTT/DIST must be present) + * @NL80211_PMSR_FTM_RESP_ATTR_DIST_VARIANCE: distance variance (u64, mm^2, note + * that standard deviation is the square root of variance, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_DIST_SPREAD: distance spread (u64, mm, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_LCI: LCI data from peer (binary, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC: civic location data from peer + * (binary, optional) + * @NL80211_PMSR_FTM_RESP_ATTR_PAD: ignore, for u64/s64 padding only + * + * @NUM_NL80211_PMSR_FTM_RESP_ATTR: internal + * @NL80211_PMSR_FTM_RESP_ATTR_MAX: highest attribute number + */ +enum nl80211_peer_measurement_ftm_resp { + __NL80211_PMSR_FTM_RESP_ATTR_INVALID, + + NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON, + NL80211_PMSR_FTM_RESP_ATTR_BURST_INDEX, + NL80211_PMSR_FTM_RESP_ATTR_NUM_FTMR_ATTEMPTS, + NL80211_PMSR_FTM_RESP_ATTR_NUM_FTMR_SUCCESSES, + NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME, + NL80211_PMSR_FTM_RESP_ATTR_NUM_BURSTS_EXP, + NL80211_PMSR_FTM_RESP_ATTR_BURST_DURATION, + NL80211_PMSR_FTM_RESP_ATTR_FTMS_PER_BURST, + NL80211_PMSR_FTM_RESP_ATTR_RSSI_AVG, + NL80211_PMSR_FTM_RESP_ATTR_RSSI_SPREAD, + NL80211_PMSR_FTM_RESP_ATTR_TX_RATE, + NL80211_PMSR_FTM_RESP_ATTR_RX_RATE, + NL80211_PMSR_FTM_RESP_ATTR_RTT_AVG, + NL80211_PMSR_FTM_RESP_ATTR_RTT_VARIANCE, + NL80211_PMSR_FTM_RESP_ATTR_RTT_SPREAD, + NL80211_PMSR_FTM_RESP_ATTR_DIST_AVG, + NL80211_PMSR_FTM_RESP_ATTR_DIST_VARIANCE, + NL80211_PMSR_FTM_RESP_ATTR_DIST_SPREAD, + NL80211_PMSR_FTM_RESP_ATTR_LCI, + NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC, + NL80211_PMSR_FTM_RESP_ATTR_PAD, + + /* keep last */ + NUM_NL80211_PMSR_FTM_RESP_ATTR, + NL80211_PMSR_FTM_RESP_ATTR_MAX = NUM_NL80211_PMSR_FTM_RESP_ATTR - 1 +}; + #endif /* __LINUX_NL80211_H */ diff --git a/net/wireless/Makefile b/net/wireless/Makefile index 1d84f91bbfb0..72a224ce8e0a 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_WEXT_PRIV) += wext-priv.o cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o ap.o trace.o ocb.o +cfg80211-y += pmsr.o cfg80211-$(CONFIG_OF) += of.o cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o diff --git a/net/wireless/core.c b/net/wireless/core.c index 5bd01058b9e6..0a3092c56b3e 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -4,6 +4,7 @@ * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright 2015-2017 Intel Deutschland GmbH + * Copyright (C) 2018 Intel Corporation */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -664,6 +665,34 @@ int wiphy_register(struct wiphy *wiphy) return -EINVAL; #endif + if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported)) + return -EINVAL; + + if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) { + if (WARN_ON(!wiphy->pmsr_capa->ftm.asap && + !wiphy->pmsr_capa->ftm.non_asap)) + return -EINVAL; + if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles || + !wiphy->pmsr_capa->ftm.bandwidths)) + return -EINVAL; + if (WARN_ON(wiphy->pmsr_capa->ftm.preambles & + ~(BIT(NL80211_PREAMBLE_LEGACY) | + BIT(NL80211_PREAMBLE_HT) | + BIT(NL80211_PREAMBLE_VHT) | + BIT(NL80211_PREAMBLE_DMG)))) + return -EINVAL; + if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths & + ~(BIT(NL80211_CHAN_WIDTH_20_NOHT) | + BIT(NL80211_CHAN_WIDTH_20) | + BIT(NL80211_CHAN_WIDTH_40) | + BIT(NL80211_CHAN_WIDTH_80) | + BIT(NL80211_CHAN_WIDTH_80P80) | + BIT(NL80211_CHAN_WIDTH_160) | + BIT(NL80211_CHAN_WIDTH_5) | + BIT(NL80211_CHAN_WIDTH_10)))) + return -EINVAL; + } + /* * if a wiphy has unsupported modes for regulatory channel enforcement, * opt-out of enforcement checking @@ -1087,6 +1116,8 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev, ASSERT_RTNL(); ASSERT_WDEV_LOCK(wdev); + cfg80211_pmsr_wdev_down(wdev); + switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: __cfg80211_leave_ibss(rdev, dev, true); @@ -1174,6 +1205,9 @@ void cfg80211_init_wdev(struct cfg80211_registered_device *rdev, spin_lock_init(&wdev->event_lock); INIT_LIST_HEAD(&wdev->mgmt_registrations); spin_lock_init(&wdev->mgmt_registrations_lock); + INIT_LIST_HEAD(&wdev->pmsr_list); + spin_lock_init(&wdev->pmsr_lock); + INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk); /* * We get here also when the interface changes network namespaces, diff --git a/net/wireless/core.h b/net/wireless/core.h index c61dbba8bf47..c5d6f3418601 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -3,6 +3,7 @@ * Wireless configuration interface internals. * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> + * Copyright (C) 2018 Intel Corporation */ #ifndef __NET_WIRELESS_CORE_H #define __NET_WIRELESS_CORE_H @@ -530,4 +531,8 @@ void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, void cfg80211_cqm_config_free(struct wireless_dev *wdev); +void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid); +void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev); +void cfg80211_pmsr_free_wk(struct work_struct *work); + #endif /* __NET_WIRELESS_CORE_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 744b5851bbf9..6fd93eb0df6d 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -240,7 +240,63 @@ nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = { .len = U8_MAX }, }; -static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { +static const struct nla_policy +nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = { + [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG }, + [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 }, + [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] = + NLA_POLICY_MAX(NLA_U8, 15), + [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 }, + [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] = + NLA_POLICY_MAX(NLA_U8, 15), + [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] = + NLA_POLICY_MAX(NLA_U8, 15), + [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 }, + [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG }, + [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG }, +}; + +static const struct nla_policy +nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = { + [NL80211_PMSR_TYPE_FTM] = + NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX, + nl80211_pmsr_ftm_req_attr_policy), +}; + +static const struct nla_policy +nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = { + [NL80211_PMSR_REQ_ATTR_DATA] = + NLA_POLICY_NESTED(NL80211_PMSR_TYPE_MAX, + nl80211_pmsr_req_data_policy), + [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG }, +}; + +static const struct nla_policy +nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = { + [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR, + /* + * we could specify this again to be the top-level policy, + * but that would open us up to recursion problems ... + */ + [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED }, + [NL80211_PMSR_PEER_ATTR_REQ] = + NLA_POLICY_NESTED(NL80211_PMSR_REQ_ATTR_MAX, + nl80211_pmsr_req_attr_policy), + [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT }, +}; + +static const struct nla_policy +nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = { + [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT }, + [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT }, + [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT }, + [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT }, + [NL80211_PMSR_ATTR_PEERS] = + NLA_POLICY_NESTED_ARRAY(NL80211_PMSR_PEER_ATTR_MAX, + nl80211_psmr_peer_attr_policy), +}; + +const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, .len = 20-1 }, @@ -497,6 +553,10 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { .type = NLA_NESTED, .validation_data = nl80211_ftm_responder_policy, }, + [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1), + [NL80211_ATTR_PEER_MEASUREMENTS] = + NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX, + nl80211_pmsr_attr_policy), }; /* policy for the key attributes */ @@ -637,9 +697,9 @@ nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, }; -static int nl80211_prepare_wdev_dump(struct netlink_callback *cb, - struct cfg80211_registered_device **rdev, - struct wireless_dev **wdev) +int nl80211_prepare_wdev_dump(struct netlink_callback *cb, + struct cfg80211_registered_device **rdev, + struct wireless_dev **wdev) { int err; @@ -684,8 +744,8 @@ static int nl80211_prepare_wdev_dump(struct netlink_callback *cb, } /* message building helper */ -static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, - int flags, u8 cmd) +void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, + int flags, u8 cmd) { /* since there is no private header just add the generic one */ return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); @@ -1615,6 +1675,91 @@ static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, return -ENOBUFS; } +static int +nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap, + struct sk_buff *msg) +{ + struct nlattr *ftm; + + if (!cap->ftm.supported) + return 0; + + ftm = nla_nest_start(msg, NL80211_PMSR_TYPE_FTM); + if (!ftm) + return -ENOBUFS; + + if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP)) + return -ENOBUFS; + if (cap->ftm.non_asap && + nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP)) + return -ENOBUFS; + if (cap->ftm.request_lci && + nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI)) + return -ENOBUFS; + if (cap->ftm.request_civicloc && + nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC)) + return -ENOBUFS; + if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES, + cap->ftm.preambles)) + return -ENOBUFS; + if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS, + cap->ftm.bandwidths)) + return -ENOBUFS; + if (cap->ftm.max_bursts_exponent >= 0 && + nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT, + cap->ftm.max_bursts_exponent)) + return -ENOBUFS; + if (cap->ftm.max_ftms_per_burst && + nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST, + cap->ftm.max_ftms_per_burst)) + return -ENOBUFS; + + nla_nest_end(msg, ftm); + return 0; +} + +static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev, + struct sk_buff *msg) +{ + const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa; + struct nlattr *pmsr, *caps; + + if (!cap) + return 0; + + /* + * we don't need to clean up anything here since the caller + * will genlmsg_cancel() if we fail + */ + + pmsr = nla_nest_start(msg, NL80211_ATTR_PEER_MEASUREMENTS); + if (!pmsr) + return -ENOBUFS; + + if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers)) + return -ENOBUFS; + + if (cap->report_ap_tsf && + nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF)) + return -ENOBUFS; + + if (cap->randomize_mac_addr && + nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR)) + return -ENOBUFS; + + caps = nla_nest_start(msg, NL80211_PMSR_ATTR_TYPE_CAPA); + if (!caps) + return -ENOBUFS; + + if (nl80211_send_pmsr_ftm_capa(cap, msg)) + return -ENOBUFS; + + nla_nest_end(msg, caps); + nla_nest_end(msg, pmsr); + + return 0; +} + struct nl80211_dump_wiphy_state { s64 filter_wiphy; long start; @@ -2118,6 +2263,12 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, goto nla_put_failure; } + state->split_start++; + break; + case 14: + if (nl80211_send_pmsr_capa(rdev, msg)) + goto nla_put_failure; + /* done */ state->split_start = 0; break; @@ -2318,9 +2469,9 @@ static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) wdev->iftype == NL80211_IFTYPE_P2P_GO; } -static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, - struct genl_info *info, - struct cfg80211_chan_def *chandef) +int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, + struct genl_info *info, + struct cfg80211_chan_def *chandef) { struct netlink_ext_ack *extack = info->extack; struct nlattr **attrs = info->attrs; @@ -2794,12 +2945,6 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) return 0; } -static inline u64 wdev_id(struct wireless_dev *wdev) -{ - return (u64)wdev->identifier | - ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); -} - static int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef) { @@ -4521,8 +4666,7 @@ static int parse_station_flags(struct genl_info *info, return 0; } -static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, - int attr) +bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr) { struct nlattr *rate; u32 bitrate; @@ -6855,8 +6999,8 @@ static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, return 0; } -static int nl80211_parse_random_mac(struct nlattr **attrs, - u8 *mac_addr, u8 *mac_addr_mask) +int nl80211_parse_random_mac(struct nlattr **attrs, + u8 *mac_addr, u8 *mac_addr_mask) { int i; @@ -13898,6 +14042,14 @@ static const struct genl_ops nl80211_ops[] = { .internal_flags = NL80211_FLAG_NEED_NETDEV | NL80211_FLAG_NEED_RTNL, }, + { + .cmd = NL80211_CMD_PEER_MEASUREMENT_START, + .doit = nl80211_pmsr_start, + .policy = nl80211_policy, + .flags = GENL_UNS_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_WDEV_UP | + NL80211_FLAG_NEED_RTNL, + }, }; static struct genl_family nl80211_fam __ro_after_init = { @@ -15881,6 +16033,8 @@ static int nl80211_netlink_notify(struct notifier_block * nb, } else if (wdev->conn_owner_nlportid == notify->portid) { schedule_work(&wdev->disconnect_wk); } + + cfg80211_release_pmsr(wdev, notify->portid); } spin_lock_bh(&rdev->beacon_registrations_lock); diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 79e47fe60c35..531c82dcba6b 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -1,4 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0 */ +/* + * Portions of this file + * Copyright (C) 2018 Intel Corporation + */ #ifndef __NET_WIRELESS_NL80211_H #define __NET_WIRELESS_NL80211_H @@ -6,6 +10,30 @@ int nl80211_init(void); void nl80211_exit(void); + +extern const struct nla_policy nl80211_policy[NUM_NL80211_ATTR]; + +void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, + int flags, u8 cmd); +bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, + int attr); + +static inline u64 wdev_id(struct wireless_dev *wdev) +{ + return (u64)wdev->identifier | + ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); +} + +int nl80211_prepare_wdev_dump(struct netlink_callback *cb, + struct cfg80211_registered_device **rdev, + struct wireless_dev **wdev); + +int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, + struct genl_info *info, + struct cfg80211_chan_def *chandef); +int nl80211_parse_random_mac(struct nlattr **attrs, + u8 *mac_addr, u8 *mac_addr_mask); + void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, enum nl80211_commands cmd); void nl80211_notify_iface(struct cfg80211_registered_device *rdev, @@ -95,4 +123,8 @@ void nl80211_send_ap_stopped(struct wireless_dev *wdev); void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev); +/* peer measurement */ +int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info); +int nl80211_pmsr_dump_results(struct sk_buff *skb, struct netlink_callback *cb); + #endif /* __NET_WIRELESS_NL80211_H */ diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c new file mode 100644 index 000000000000..de9286703280 --- /dev/null +++ b/net/wireless/pmsr.c @@ -0,0 +1,590 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 Intel Corporation + */ +#ifndef __PMSR_H +#define __PMSR_H +#include <net/cfg80211.h> +#include "core.h" +#include "nl80211.h" +#include "rdev-ops.h" + +static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev, + struct nlattr *ftmreq, + struct cfg80211_pmsr_request_peer *out, + struct genl_info *info) +{ + const struct cfg80211_pmsr_capabilities *capa = rdev->wiphy.pmsr_capa; + struct nlattr *tb[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1]; + u32 preamble = NL80211_PREAMBLE_DMG; /* only optional in DMG */ + + /* validate existing data */ + if (!(rdev->wiphy.pmsr_capa->ftm.bandwidths & BIT(out->chandef.width))) { + NL_SET_ERR_MSG(info->extack, "FTM: unsupported bandwidth"); + return -EINVAL; + } + + /* no validation needed - was already done via nested policy */ + nla_parse_nested(tb, NL80211_PMSR_FTM_REQ_ATTR_MAX, ftmreq, NULL, NULL); + + if (tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) + preamble = nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]); + + /* set up values - struct is 0-initialized */ + out->ftm.requested = true; + + switch (out->chandef.chan->band) { + case NL80211_BAND_60GHZ: + /* optional */ + break; + default: + if (!tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) { + NL_SET_ERR_MSG(info->extack, + "FTM: must specify preamble"); + return -EINVAL; + } + } + + if (!(capa->ftm.preambles & BIT(preamble))) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], + "FTM: invalid preamble"); + return -EINVAL; + } + + out->ftm.preamble = preamble; + + out->ftm.burst_period = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]) + out->ftm.burst_period = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]); + + out->ftm.asap = !!tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP]; + if (out->ftm.asap && !capa->ftm.asap) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP], + "FTM: ASAP mode not supported"); + return -EINVAL; + } + + if (!out->ftm.asap && !capa->ftm.non_asap) { + NL_SET_ERR_MSG(info->extack, + "FTM: non-ASAP mode not supported"); + return -EINVAL; + } + + out->ftm.num_bursts_exp = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]) + out->ftm.num_bursts_exp = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]); + + if (capa->ftm.max_bursts_exponent >= 0 && + out->ftm.num_bursts_exp > capa->ftm.max_bursts_exponent) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP], + "FTM: max NUM_BURSTS_EXP must be set lower than the device limit"); + return -EINVAL; + } + + out->ftm.burst_duration = 15; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]) + out->ftm.burst_duration = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]); + + out->ftm.ftms_per_burst = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]) + out->ftm.ftms_per_burst = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]); + + if (capa->ftm.max_ftms_per_burst && + (out->ftm.ftms_per_burst > capa->ftm.max_ftms_per_burst || + out->ftm.ftms_per_burst == 0)) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST], + "FTM: FTMs per burst must be set lower than the device limit but non-zero"); + return -EINVAL; + } + + out->ftm.ftmr_retries = 3; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]) + out->ftm.ftmr_retries = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]); + + out->ftm.request_lci = !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI]; + if (out->ftm.request_lci && !capa->ftm.request_lci) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI], + "FTM: LCI request not supported"); + } + + out->ftm.request_civicloc = + !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC]; + if (out->ftm.request_civicloc && !capa->ftm.request_civicloc) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC], + "FTM: civic location request not supported"); + } + + return 0; +} + +static int pmsr_parse_peer(struct cfg80211_registered_device *rdev, + struct nlattr *peer, + struct cfg80211_pmsr_request_peer *out, + struct genl_info *info) +{ + struct nlattr *tb[NL80211_PMSR_PEER_ATTR_MAX + 1]; + struct nlattr *req[NL80211_PMSR_REQ_ATTR_MAX + 1]; + struct nlattr *treq; + int err, rem; + + /* no validation needed - was already done via nested policy */ + nla_parse_nested(tb, NL80211_PMSR_PEER_ATTR_MAX, peer, NULL, NULL); + + if (!tb[NL80211_PMSR_PEER_ATTR_ADDR] || + !tb[NL80211_PMSR_PEER_ATTR_CHAN] || + !tb[NL80211_PMSR_PEER_ATTR_REQ]) { + NL_SET_ERR_MSG_ATTR(info->extack, peer, + "insufficient peer data"); + return -EINVAL; + } + + memcpy(out->addr, nla_data(tb[NL80211_PMSR_PEER_ATTR_ADDR]), ETH_ALEN); + + /* reuse info->attrs */ + memset(info->attrs, 0, sizeof(*info->attrs) * (NL80211_ATTR_MAX + 1)); + /* need to validate here, we don't want to have validation recursion */ + err = nla_parse_nested(info->attrs, NL80211_ATTR_MAX, + tb[NL80211_PMSR_PEER_ATTR_CHAN], + nl80211_policy, info->extack); + if (err) + return err; + + err = nl80211_parse_chandef(rdev, info, &out->chandef); + if (err) + return err; + + /* no validation needed - was already done via nested policy */ + nla_parse_nested(req, NL80211_PMSR_REQ_ATTR_MAX, + tb[NL80211_PMSR_PEER_ATTR_REQ], + NULL, NULL); + + if (!req[NL80211_PMSR_REQ_ATTR_DATA]) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_PEER_ATTR_REQ], + "missing request type/data"); + return -EINVAL; + } + + if (req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF]) + out->report_ap_tsf = true; + + if (out->report_ap_tsf && !rdev->wiphy.pmsr_capa->report_ap_tsf) { + NL_SET_ERR_MSG_ATTR(info->extack, + req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF], + "reporting AP TSF is not supported"); + return -EINVAL; + } + + nla_for_each_nested(treq, req[NL80211_PMSR_REQ_ATTR_DATA], rem) { + switch (nla_type(treq)) { + case NL80211_PMSR_TYPE_FTM: + err = pmsr_parse_ftm(rdev, treq, out, info); + break; + default: + NL_SET_ERR_MSG_ATTR(info->extack, treq, + "unsupported measurement type"); + err = -EINVAL; + } + } + + if (err) + return err; + + return 0; +} + +int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info) +{ + struct nlattr *reqattr = info->attrs[NL80211_ATTR_PEER_MEASUREMENTS]; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct wireless_dev *wdev = info->user_ptr[1]; + struct cfg80211_pmsr_request *req; + struct nlattr *peers, *peer; + int count, rem, err, idx; + + if (!rdev->wiphy.pmsr_capa) + return -EOPNOTSUPP; + + if (!reqattr) + return -EINVAL; + + peers = nla_find(nla_data(reqattr), nla_len(reqattr), + NL80211_PMSR_ATTR_PEERS); + if (!peers) + return -EINVAL; + + count = 0; + nla_for_each_nested(peer, peers, rem) { + count++; + + if (count > rdev->wiphy.pmsr_capa->max_peers) { + NL_SET_ERR_MSG_ATTR(info->extack, peer, + "Too many peers used"); + return -EINVAL; + } + } + + req = kzalloc(struct_size(req, peers, count), GFP_KERNEL); + if (!req) + return -ENOMEM; + + if (info->attrs[NL80211_ATTR_TIMEOUT]) + req->timeout = nla_get_u32(info->attrs[NL80211_ATTR_TIMEOUT]); + + if (info->attrs[NL80211_ATTR_MAC]) { + if (!rdev->wiphy.pmsr_capa->randomize_mac_addr) { + NL_SET_ERR_MSG_ATTR(info->extack, + info->attrs[NL80211_ATTR_MAC], + "device cannot randomize MAC address"); + err = -EINVAL; + goto out_err; + } + + err = nl80211_parse_random_mac(info->attrs, req->mac_addr, + req->mac_addr_mask); + if (err) + goto out_err; + } else { + memcpy(req->mac_addr, nla_data(info->attrs[NL80211_ATTR_MAC]), + ETH_ALEN); + memset(req->mac_addr_mask, 0xff, ETH_ALEN); + } + + idx = 0; + nla_for_each_nested(peer, peers, rem) { + /* NB: this reuses info->attrs, but we no longer need it */ + err = pmsr_parse_peer(rdev, peer, &req->peers[idx], info); + if (err) + goto out_err; + idx++; + } + + req->n_peers = count; + req->cookie = cfg80211_assign_cookie(rdev); + + err = rdev_start_pmsr(rdev, wdev, req); + if (err) + goto out_err; + + list_add_tail(&req->list, &wdev->pmsr_list); + + nl_set_extack_cookie_u64(info->extack, req->cookie); + return 0; +out_err: + kfree(req); + return err; +} + +void cfg80211_pmsr_complete(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + gfp_t gfp) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct sk_buff *msg; + void *hdr; + + trace_cfg80211_pmsr_complete(wdev->wiphy, wdev, req->cookie); + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + goto free_request; + + hdr = nl80211hdr_put(msg, 0, 0, 0, + NL80211_CMD_PEER_MEASUREMENT_COMPLETE); + if (!hdr) + goto free_msg; + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), + NL80211_ATTR_PAD)) + goto free_msg; + + if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, + NL80211_ATTR_PAD)) + goto free_msg; + + genlmsg_end(msg, hdr); + genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); + goto free_request; +free_msg: + nlmsg_free(msg); +free_request: + spin_lock_bh(&wdev->pmsr_lock); + list_del(&req->list); + spin_unlock_bh(&wdev->pmsr_lock); + kfree(req); +} +EXPORT_SYMBOL_GPL(cfg80211_pmsr_complete); + +static int nl80211_pmsr_send_ftm_res(struct sk_buff *msg, + struct cfg80211_pmsr_result *res) +{ + if (res->status == NL80211_PMSR_STATUS_FAILURE) { + if (nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON, + res->ftm.failure_reason)) + goto error; + + if (res->ftm.failure_reason == + NL80211_PMSR_FTM_FAILURE_PEER_BUSY && + res->ftm.busy_retry_time && + nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME, + res->ftm.busy_retry_time)) + goto error; + + return 0; + } + +#define PUT(tp, attr, val) \ + do { \ + if (nla_put_##tp(msg, \ + NL80211_PMSR_FTM_RESP_ATTR_##attr, \ + res->ftm.val)) \ + goto error; \ + } while (0) + +#define PUTOPT(tp, attr, val) \ + do { \ + if (res->ftm.val##_valid) \ + PUT(tp, attr, val); \ + } while (0) + +#define PUT_U64(attr, val) \ + do { \ + if (nla_put_u64_64bit(msg, \ + NL80211_PMSR_FTM_RESP_ATTR_##attr,\ + res->ftm.val, \ + NL80211_PMSR_FTM_RESP_ATTR_PAD)) \ + goto error; \ + } while (0) + +#define PUTOPT_U64(attr, val) \ + do { \ + if (res->ftm.val##_valid) \ + PUT_U64(attr, val); \ + } while (0) + + if (res->ftm.burst_index >= 0) + PUT(u32, BURST_INDEX, burst_index); + PUTOPT(u32, NUM_FTMR_ATTEMPTS, num_ftmr_attempts); + PUTOPT(u32, NUM_FTMR_SUCCESSES, num_ftmr_successes); + PUT(u8, NUM_BURSTS_EXP, num_bursts_exp); + PUT(u8, BURST_DURATION, burst_duration); + PUT(u8, FTMS_PER_BURST, ftms_per_burst); + PUTOPT(s32, RSSI_AVG, rssi_avg); + PUTOPT(s32, RSSI_SPREAD, rssi_spread); + if (res->ftm.tx_rate_valid && + !nl80211_put_sta_rate(msg, &res->ftm.tx_rate, + NL80211_PMSR_FTM_RESP_ATTR_TX_RATE)) + goto error; + if (res->ftm.rx_rate_valid && + !nl80211_put_sta_rate(msg, &res->ftm.rx_rate, + NL80211_PMSR_FTM_RESP_ATTR_RX_RATE)) + goto error; + PUTOPT_U64(RTT_AVG, rtt_avg); + PUTOPT_U64(RTT_VARIANCE, rtt_variance); + PUTOPT_U64(RTT_SPREAD, rtt_spread); + PUTOPT_U64(DIST_AVG, dist_avg); + PUTOPT_U64(DIST_VARIANCE, dist_variance); + PUTOPT_U64(DIST_SPREAD, dist_spread); + if (res->ftm.lci && res->ftm.lci_len && + nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_LCI, + res->ftm.lci_len, res->ftm.lci)) + goto error; + if (res->ftm.civicloc && res->ftm.civicloc_len && + nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC, + res->ftm.civicloc_len, res->ftm.civicloc)) + goto error; +#undef PUT +#undef PUTOPT +#undef PUT_U64 +#undef PUTOPT_U64 + + return 0; +error: + return -ENOSPC; +} + +static int nl80211_pmsr_send_result(struct sk_buff *msg, + struct cfg80211_pmsr_result *res) +{ + struct nlattr *pmsr, *peers, *peer, *resp, *data, *typedata; + + pmsr = nla_nest_start(msg, NL80211_ATTR_PEER_MEASUREMENTS); + if (!pmsr) + goto error; + + peers = nla_nest_start(msg, NL80211_PMSR_ATTR_PEERS); + if (!peers) + goto error; + + peer = nla_nest_start(msg, 1); + if (!peer) + goto error; + + if (nla_put(msg, NL80211_PMSR_PEER_ATTR_ADDR, ETH_ALEN, res->addr)) + goto error; + + resp = nla_nest_start(msg, NL80211_PMSR_PEER_ATTR_RESP); + if (!resp) + goto error; + + if (nla_put_u32(msg, NL80211_PMSR_RESP_ATTR_STATUS, res->status) || + nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_HOST_TIME, + res->host_time, NL80211_PMSR_RESP_ATTR_PAD)) + goto error; + + if (res->ap_tsf_valid && + nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_AP_TSF, + res->host_time, NL80211_PMSR_RESP_ATTR_PAD)) + goto error; + + if (res->final && nla_put_flag(msg, NL80211_PMSR_RESP_ATTR_FINAL)) + goto error; + + data = nla_nest_start(msg, NL80211_PMSR_RESP_ATTR_DATA); + if (!data) + goto error; + + typedata = nla_nest_start(msg, res->type); + if (!typedata) + goto error; + + switch (res->type) { + case NL80211_PMSR_TYPE_FTM: + if (nl80211_pmsr_send_ftm_res(msg, res)) + goto error; + break; + default: + WARN_ON(1); + } + + nla_nest_end(msg, typedata); + nla_nest_end(msg, data); + nla_nest_end(msg, resp); + nla_nest_end(msg, peer); + nla_nest_end(msg, peers); + nla_nest_end(msg, pmsr); + + return 0; +error: + return -ENOSPC; +} + +void cfg80211_pmsr_report(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + struct cfg80211_pmsr_result *result, + gfp_t gfp) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct sk_buff *msg; + void *hdr; + int err; + + trace_cfg80211_pmsr_report(wdev->wiphy, wdev, req->cookie, + result->addr); + + /* + * Currently, only variable items are LCI and civic location, + * both of which are reasonably short so we don't need to + * worry about them here for the allocation. + */ + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PEER_MEASUREMENT_RESULT); + if (!hdr) + goto free; + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), + NL80211_ATTR_PAD)) + goto free; + + if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, + NL80211_ATTR_PAD)) + goto free; + + err = nl80211_pmsr_send_result(msg, result); + if (err) { + pr_err_ratelimited("peer measurement result: message didn't fit!"); + goto free; + } + + genlmsg_end(msg, hdr); + genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); + return; +free: + nlmsg_free(msg); +} +EXPORT_SYMBOL_GPL(cfg80211_pmsr_report); + +void cfg80211_pmsr_free_wk(struct work_struct *work) +{ + struct wireless_dev *wdev = container_of(work, struct wireless_dev, + pmsr_free_wk); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct cfg80211_pmsr_request *req, *tmp; + LIST_HEAD(free_list); + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry_safe(req, tmp, &wdev->pmsr_list, list) { + if (req->nl_portid) + continue; + list_move_tail(&req->list, &free_list); + } + spin_unlock_bh(&wdev->pmsr_lock); + + list_for_each_entry_safe(req, tmp, &free_list, list) { + wdev_lock(wdev); + rdev_abort_pmsr(rdev, wdev, req); + wdev_unlock(wdev); + + kfree(req); + } +} + +void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev) +{ + struct cfg80211_pmsr_request *req; + bool found = false; + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry(req, &wdev->pmsr_list, list) { + found = true; + req->nl_portid = 0; + } + spin_unlock_bh(&wdev->pmsr_lock); + + if (found) + schedule_work(&wdev->pmsr_free_wk); + flush_work(&wdev->pmsr_free_wk); + WARN_ON(!list_empty(&wdev->pmsr_list)); +} + +void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid) +{ + struct cfg80211_pmsr_request *req; + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry(req, &wdev->pmsr_list, list) { + if (req->nl_portid == portid) { + req->nl_portid = 0; + schedule_work(&wdev->pmsr_free_wk); + } + } + spin_unlock_bh(&wdev->pmsr_lock); +} + +#endif /* __PMSR_H */ diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h index 51380b5c32f2..5cb48d135fab 100644 --- a/net/wireless/rdev-ops.h +++ b/net/wireless/rdev-ops.h @@ -1247,4 +1247,29 @@ rdev_get_ftm_responder_stats(struct cfg80211_registered_device *rdev, return ret; } +static inline int +rdev_start_pmsr(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev, + struct cfg80211_pmsr_request *request) +{ + int ret = -EOPNOTSUPP; + + trace_rdev_start_pmsr(&rdev->wiphy, wdev, request->cookie); + if (rdev->ops->start_pmsr) + ret = rdev->ops->start_pmsr(&rdev->wiphy, wdev, request); + trace_rdev_return_int(&rdev->wiphy, ret); + return ret; +} + +static inline void +rdev_abort_pmsr(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev, + struct cfg80211_pmsr_request *request) +{ + trace_rdev_abort_pmsr(&rdev->wiphy, wdev, request->cookie); + if (rdev->ops->abort_pmsr) + rdev->ops->abort_pmsr(&rdev->wiphy, wdev, request); + trace_rdev_return_void(&rdev->wiphy); +} + #endif /* __CFG80211_RDEV_OPS */ diff --git a/net/wireless/trace.h b/net/wireless/trace.h index f7909867d8fb..44b2ce1bb13a 100644 --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -361,6 +361,24 @@ DECLARE_EVENT_CLASS(wiphy_wdev_evt, TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT, WIPHY_PR_ARG, WDEV_PR_ARG) ); +DECLARE_EVENT_CLASS(wiphy_wdev_cookie_evt, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie), + TP_ARGS(wiphy, wdev, cookie), + TP_STRUCT__entry( + WIPHY_ENTRY + WDEV_ENTRY + __field(u64, cookie) + ), + TP_fast_assign( + WIPHY_ASSIGN; + WDEV_ASSIGN; + __entry->cookie = cookie; + ), + TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", cookie: %lld", + WIPHY_PR_ARG, WDEV_PR_ARG, + (unsigned long long)__entry->cookie) +); + DEFINE_EVENT(wiphy_wdev_evt, rdev_return_wdev, TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev), TP_ARGS(wiphy, wdev) @@ -2502,6 +2520,16 @@ TRACE_EVENT(rdev_get_ftm_responder_stats, __entry->out_of_window) ); +DEFINE_EVENT(wiphy_wdev_cookie_evt, rdev_start_pmsr, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie), + TP_ARGS(wiphy, wdev, cookie) +); + +DEFINE_EVENT(wiphy_wdev_cookie_evt, rdev_abort_pmsr, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie), + TP_ARGS(wiphy, wdev, cookie) +); + /************************************************************* * cfg80211 exported functions traces * *************************************************************/ @@ -3294,6 +3322,46 @@ TRACE_EVENT(cfg80211_stop_iface, TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT, WIPHY_PR_ARG, WDEV_PR_ARG) ); + +TRACE_EVENT(cfg80211_pmsr_report, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev, + u64 cookie, const u8 *addr), + TP_ARGS(wiphy, wdev, cookie, addr), + TP_STRUCT__entry( + WIPHY_ENTRY + WDEV_ENTRY + __field(u64, cookie) + MAC_ENTRY(addr) + ), + TP_fast_assign( + WIPHY_ASSIGN; + WDEV_ASSIGN; + __entry->cookie = cookie; + MAC_ASSIGN(addr, addr); + ), + TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", cookie:%lld, " MAC_PR_FMT, + WIPHY_PR_ARG, WDEV_PR_ARG, + (unsigned long long)__entry->cookie, + MAC_PR_ARG(addr)) +); + +TRACE_EVENT(cfg80211_pmsr_complete, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie), + TP_ARGS(wiphy, wdev, cookie), + TP_STRUCT__entry( + WIPHY_ENTRY + WDEV_ENTRY + __field(u64, cookie) + ), + TP_fast_assign( + WIPHY_ASSIGN; + WDEV_ASSIGN; + __entry->cookie = cookie; + ), + TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", cookie:%lld", + WIPHY_PR_ARG, WDEV_PR_ARG, + (unsigned long long)__entry->cookie) +); #endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */ #undef TRACE_INCLUDE_PATH |