Current implementation of NL80211_CMD_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.
Hence, add the link_sinfo structure to provide infrastructure
for link-level station statistics for multi-link operation(MLO).
Additionally, accumulated stats for MLO are included in a concise
manner to provide a comprehensive overview of the ML stations.
V7:
- Redesign the approach according to provided comments( mentioned the
current implemented approach below in "Purposed Flow").
V6:
- Fix compilation failure.
- Add expected_throughput, beacon_loss_count, rx_dropped_misc at MLO
level.
- Removed is_per_link_stats_support boolean from sinfo structure.
- Used ether_addr_copy() instead of memcpy().
V5:
- Rebased the patches.
V4:
- Update helper function for link_sta derefrence.
- Instead of using unnecessary rssi variable directly use return.
- Correct commit tittle and message for some patches.
- Corrected cfg80211_sinfo_release_content() unnecessary logic.
- Split the patches for cfg80211/mac80211.
- Add additional fields at MLO level.
- Remove Ath12k patche from this series.
- Remove unnecessary if condition check from "add additional MLO
statistics".
V3:
- Convert RFC patch to actual PATCH with each patch bisectable.
- Add logic for MLO level signal and rates.
V2:
- Update cover letter to give more details on structural changes.
- Split the patch(1/7) in two patches.
- Do the required changes for MLO bringup before as seperate patches.
- Remove link_sinfo naming to sinfo for better clarity on changes.
- Add accumulated stats logic in cfg80211.
- Add flag to indicate driver supports per-link station statistics or not.
Current flow:
cfg80211:
- Structure station_info is used to fill all station information (station
level as well link level).
- Nl80211_get_station() - locally define sinfo, call -.get_station() ops
mac80211:
- Sta_set_sinfo() - fill station information and call mac80211
ops - .sta_statistics()(to fill the station_info structure).
Purposed Flow:
cfg80211:
- introduce link_station_info structure for link level statistics
structure link_station_info {
filled
rates
...etc // all link specific fields
}
- add link_station_info for MAX links in station_info structure
structure station_info {
filled
packets
sta_flags
... etc
valid_links
link_station_info *links[IEEE80211_MLD_MAX_NUM_LINKS]
}
- Station_info structure is used for non-ML station statistics and
update the sinfo_structure for MLO, for accumulated, best, least
among all valid links in cfg80211_sta_set_mld_sinfo().
- Allocate and free memory for link_sinfo for all links.
- Embed NL message to include link level data, if valid_links are present.
mac80211:
- Sta_set_sinfo() - fill station specific information as filled before
if non-ML:
- call mac80211 ops .sta_statistics() to fill station_info structure.
if MLO:
- call sta_set_link_sinfo(), for all valid links to fill
link_station_info in *links[link_id].
- introduce and call mac80211 ops for each link- .link_sta_statistics()
to fill link statistics from drivers.
- Maintain accumulated data for removed links in sta_info structure
and fill in to station_info structure for consistency.
Sarika Sharma (10):
wifi: mac80211: add support towards MLO handling of station statistics
wifi: cfg80211: add link_station_info structure to support MLO
statistics
wifi: cfg80211: extend to embed link level statistics in NL message
wifi: cfg80211: add statistics for providing overview for MLO station
wifi: cfg80211: allocate memory for link_station info structure
wifi: mac80211: add support to accumulate removed link statistics
wifi: cfg80211: reset sinfo->filled for MLO station statistics
wifi: mac80211: extend support to fill link level sinfo structure
wifi: mac80211: add link_sta_statistics ops to fill link station
statistics
wifi: mac80211: correct RX stats packet increment for multi-link
drivers/net/wireless/intel/iwlwifi/dvm/lib.c | 2 +-
include/net/cfg80211.h | 124 ++++++
include/net/mac80211.h | 16 +-
net/mac80211/cfg.c | 13 +
net/mac80211/driver-ops.h | 19 +
net/mac80211/ibss.c | 4 +-
net/mac80211/rx.c | 15 +-
net/mac80211/sta_info.c | 393 +++++++++++++++--
net/mac80211/sta_info.h | 36 +-
net/mac80211/trace.h | 7 +
net/mac80211/util.c | 14 +-
net/wireless/nl80211.c | 434 ++++++++++++++++++-
net/wireless/util.c | 12 +
13 files changed, 1051 insertions(+), 38 deletions(-)
base-commit: 63a9a727d373fa5b8ce509eef50dbc45e0f745b9
--
2.34.1
