From: Sarika Sharma Date: Wed, 28 May 2025 05:44:12 +0000 (+0530) Subject: wifi: cfg80211: add link_station_info structure to support MLO statistics X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d2329fff7e527e8b350086be2e7cbf0d190177a3;p=thirdparty%2Flinux.git wifi: cfg80211: add link_station_info structure to support MLO statistics Current implementation of NL80211_GET_STATION does not work for multi-link operation(MLO) since in case of MLO only deflink (or one of the links) is considered and not all links. Therefore to support for MLO, add link_station_info structure to account link level statistics for station. Additionally, add valid_links in station_info structure to indicate bitmap of valid links for MLO. This will be helpful to check the link related statistics during MLO. Signed-off-by: Sarika Sharma Link: https://patch.msgid.link/20250528054420.3050133-3-quic_sarishar@quicinc.com Signed-off-by: Johannes Berg --- diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 47b4235eea59e..b008357cac03c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2017,6 +2017,99 @@ struct cfg80211_tid_stats { #define IEEE80211_MAX_CHAINS 4 +/** + * struct link_station_info - link station information + * + * Link station information filled by driver for get_station() and + * dump_station(). + * @filled: bit flag of flags using the bits of &enum nl80211_sta_info to + * indicate the relevant values in this struct for them + * @connected_time: time(in secs) since a link of station is last connected + * @inactive_time: time since last activity for link station(tx/rx) + * in milliseconds + * @assoc_at: bootime (ns) of the last association of link of station + * @rx_bytes: bytes (size of MPDUs) received from this link of station + * @tx_bytes: bytes (size of MPDUs) transmitted to this link of station + * @signal: The signal strength, type depends on the wiphy's signal_type. + * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. + * @signal_avg: Average signal strength, type depends on the wiphy's + * signal_type. For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_ + * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg + * @chain_signal: per-chain signal strength of last received packet in dBm + * @chain_signal_avg: per-chain signal strength average in dBm + * @txrate: current unicast bitrate from this link of station + * @rxrate: current unicast bitrate to this link of station + * @rx_packets: packets (MSDUs & MMPDUs) received from this link of station + * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this link of station + * @tx_retries: cumulative retry counts (MPDUs) for this link of station + * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK) + * @rx_dropped_misc: Dropped for un-specified reason. + * @bss_param: current BSS parameters + * @beacon_loss_count: Number of times beacon loss event has triggered. + * @expected_throughput: expected throughput in kbps (including 802.11 headers) + * towards this station. + * @rx_beacon: number of beacons received from this peer + * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received + * from this peer + * @rx_duration: aggregate PPDU duration(usecs) for all the frames from a peer + * @tx_duration: aggregate PPDU duration(usecs) for all the frames to a peer + * @airtime_weight: current airtime scheduling weight + * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last + * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. + * Note that this doesn't use the @filled bit, but is used if non-NULL. + * @ack_signal: signal strength (in dBm) of the last ACK frame. + * @avg_ack_signal: average rssi value of ack packet for the no of msdu's has + * been sent. + * @rx_mpdu_count: number of MPDUs received from this station + * @fcs_err_count: number of packets (MPDUs) received from this station with + * an FCS error. This counter should be incremented only when TA of the + * received packet with an FCS error matches the peer MAC address. + * @addr: For MLO STA connection, filled with address of the link of station. + */ +struct link_station_info { + u64 filled; + u32 connected_time; + u32 inactive_time; + u64 assoc_at; + u64 rx_bytes; + u64 tx_bytes; + s8 signal; + s8 signal_avg; + + u8 chains; + s8 chain_signal[IEEE80211_MAX_CHAINS]; + s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; + + struct rate_info txrate; + struct rate_info rxrate; + u32 rx_packets; + u32 tx_packets; + u32 tx_retries; + u32 tx_failed; + u32 rx_dropped_misc; + struct sta_bss_parameters bss_param; + + u32 beacon_loss_count; + + u32 expected_throughput; + + u64 tx_duration; + u64 rx_duration; + u64 rx_beacon; + u8 rx_beacon_signal_avg; + + u16 airtime_weight; + + s8 ack_signal; + s8 avg_ack_signal; + struct cfg80211_tid_stats *pertid; + + u32 rx_mpdu_count; + u32 fcs_err_count; + + u8 addr[ETH_ALEN] __aligned(2); +}; + /** * struct station_info - station information * @@ -2101,6 +2194,11 @@ struct cfg80211_tid_stats { * dump_station() callbacks. User space needs this information to determine * the accepted and rejected affiliated links of the connected station. * @assoc_resp_ies_len: Length of @assoc_resp_ies buffer in octets. + * @valid_links: bitmap of valid links, or 0 for non-MLO. Drivers fill this + * information in cfg80211_new_sta(), cfg80211_del_sta_sinfo(), + * get_station() and dump_station() callbacks. + * @links: reference to Link sta entries for MLO STA, all link specific + * information is accessed through links[link_id]. */ struct station_info { u64 filled; @@ -2165,6 +2263,9 @@ struct station_info { u8 mld_addr[ETH_ALEN] __aligned(2); const u8 *assoc_resp_ies; size_t assoc_resp_ies_len; + + u16 valid_links; + struct link_station_info *links[IEEE80211_MLD_MAX_NUM_LINKS]; }; /**