Commit d2329fff authored by Sarika Sharma's avatar Sarika Sharma Committed by Johannes Berg
Browse files

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: default avatarSarika Sharma <quic_sarishar@quicinc.com>
Link: https://patch.msgid.link/20250528054420.3050133-3-quic_sarishar@quicinc.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent e581b7fe

include/net/cfg80211.h

+101 −0
Original line number Diff line number Diff line
@@ -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];

};



/**