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cfg80211: Add airtime statistics and settings

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This adds TX airtime statistics to the cfg80211 station dump (to go along
with the RX info already present), and adds a new parameter to set the
airtime weight of each station. The latter allows userspace to implement
policies for different stations by varying their weights.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
[rmanohar@codeaurora.org: fixed checkpatch warnings]
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
[move airtime weight != 0 check into policy]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Toke Høiland-Jørgensen 2018-12-18 17:02:07 -08:00 committed by Johannes Berg
parent 1866760096
commit 36647055b3
3 changed files with 49 additions and 1 deletions
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11
include/net/cfg80211.h
View File

@ -1003,6 +1003,7 @@ enum station_parameters_apply_mask {
* @support_p2p_ps: information if station supports P2P PS mechanism
* @he_capa: HE capabilities of station
* @he_capa_len: the length of the HE capabilities
* @airtime_weight: airtime scheduler weight for this station
*/
struct station_parameters {
const u8 *supported_rates;
@ -1032,6 +1033,7 @@ struct station_parameters {
int support_p2p_ps;
const struct ieee80211_he_cap_elem *he_capa;
u8 he_capa_len;
u16 airtime_weight;
};
/**
@ -1300,6 +1302,8 @@ struct cfg80211_tid_stats {
* from this peer
* @connected_to_gate: true if mesh STA has a path to mesh gate
* @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.
@ -1350,8 +1354,9 @@ struct station_info {
u32 expected_throughput;
u64 rx_beacon;
u64 tx_duration;
u64 rx_duration;
u64 rx_beacon;
u8 rx_beacon_signal_avg;
u8 connected_to_gate;
@ -1359,6 +1364,8 @@ struct station_info {
s8 ack_signal;
s8 avg_ack_signal;
u16 airtime_weight;
u32 rx_mpdu_count;
u32 fcs_err_count;
};
@ -2391,6 +2398,8 @@ enum wiphy_params_flags {
WIPHY_PARAM_TXQ_QUANTUM = 1 << 8,
};
#define IEEE80211_DEFAULT_AIRTIME_WEIGHT 256
/**
* struct cfg80211_pmksa - PMK Security Association
*

15
include/uapi/linux/nl80211.h
View File

@ -2299,6 +2299,9 @@ enum nl80211_commands {
* This is also used for capability advertisement in the wiphy information,
* with the appropriate sub-attributes.
*
* @NL80211_ATTR_AIRTIME_WEIGHT: Station's weight when scheduled by the airtime
* scheduler.
*
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@ -2748,6 +2751,8 @@ enum nl80211_attrs {
NL80211_ATTR_PEER_MEASUREMENTS,
NL80211_ATTR_AIRTIME_WEIGHT,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@ -3125,6 +3130,9 @@ enum nl80211_sta_bss_param {
* might not be fully accurate.
* @NL80211_STA_INFO_CONNECTED_TO_GATE: set to true if STA has a path to a
* mesh gate (u8, 0 or 1)
* @NL80211_STA_INFO_TX_DURATION: aggregate PPDU duration for all frames
* sent to the station (u64, usec)
* @NL80211_STA_INFO_AIRTIME_WEIGHT: current airtime weight for station (u16)
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@ -3168,6 +3176,8 @@ enum nl80211_sta_info {
NL80211_STA_INFO_RX_MPDUS,
NL80211_STA_INFO_FCS_ERROR_COUNT,
NL80211_STA_INFO_CONNECTED_TO_GATE,
NL80211_STA_INFO_TX_DURATION,
NL80211_STA_INFO_AIRTIME_WEIGHT,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
@ -5316,6 +5326,10 @@ enum nl80211_feature_flags {
* if this flag is not set. Ignoring this can leak clear text packets and/or
* freeze the connection.
*
* @NL80211_EXT_FEATURE_AIRTIME_FAIRNESS: Driver supports getting airtime
* fairness for transmitted packets and has enabled airtime fairness
* scheduling.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@ -5355,6 +5369,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT,
NL80211_EXT_FEATURE_CAN_REPLACE_PTK0,
NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,

24
net/wireless/nl80211.c
View File

@ -557,6 +557,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_PEER_MEASUREMENTS] =
NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX,
nl80211_pmsr_attr_policy),
[NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
};
/* policy for the key attributes */
@ -4851,6 +4852,11 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
PUT_SINFO(PLID, plid, u16);
PUT_SINFO(PLINK_STATE, plink_state, u8);
PUT_SINFO_U64(RX_DURATION, rx_duration);
PUT_SINFO_U64(TX_DURATION, tx_duration);
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
@ -5470,6 +5476,15 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
}
if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
params.airtime_weight =
nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
if (params.airtime_weight &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
/* Include parameters for TDLS peer (will check later) */
err = nl80211_set_station_tdls(info, &params);
if (err)
@ -5598,6 +5613,15 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
params.airtime_weight =
nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
if (params.airtime_weight &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
err = nl80211_parse_sta_channel_info(info, &params);
if (err)
return err;