diff options
Diffstat (limited to 'package/kernel/mac80211/patches')
4 files changed, 591 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/363-mac80211-minstrel_ht-fix-per-group-max-throughput-ra.patch b/package/kernel/mac80211/patches/subsys/363-mac80211-minstrel_ht-fix-per-group-max-throughput-ra.patch new file mode 100644 index 0000000000..87a987dcf9 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/363-mac80211-minstrel_ht-fix-per-group-max-throughput-ra.patch @@ -0,0 +1,22 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 14 Jun 2019 21:12:04 +0200 +Subject: [PATCH] mac80211: minstrel_ht: fix per-group max throughput rate + initialization + +The group number needs to be multiplied by the number of rates per group +to get the full rate index + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -576,7 +576,7 @@ minstrel_ht_update_stats(struct minstrel + + /* (re)Initialize group rate indexes */ + for(j = 0; j < MAX_THR_RATES; j++) +- tmp_group_tp_rate[j] = group; ++ tmp_group_tp_rate[j] = MCS_GROUP_RATES * group; + + for (i = 0; i < MCS_GROUP_RATES; i++) { + if (!(mi->supported[group] & BIT(i))) diff --git a/package/kernel/mac80211/patches/subsys/364-mac80211-minstrel_ht-reduce-unnecessary-rate-probing.patch b/package/kernel/mac80211/patches/subsys/364-mac80211-minstrel_ht-reduce-unnecessary-rate-probing.patch new file mode 100644 index 0000000000..96dcdf6e02 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/364-mac80211-minstrel_ht-reduce-unnecessary-rate-probing.patch @@ -0,0 +1,42 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Wed, 5 Jun 2019 20:42:49 +0200 +Subject: [PATCH] mac80211: minstrel_ht: reduce unnecessary rate probing + attempts + +On hardware with static fallback tables (e.g. mt76x2), rate probing attempts +can be very expensive. +On such devices, avoid sampling rates slower than the per-group max throughput +rate, based on the assumption that the fallback table will take care of probing +lower rates within that group if the higher rates fail. +To make this work, this also fixes a wrong initialization in the previously +unused per-group sorted rate array. +To further reduce unnecessary probing attempts, skip duplicate attempts on +rates slower than the max throughput rate. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -1062,6 +1062,21 @@ minstrel_get_sample_rate(struct minstrel + minstrel_get_duration(mi->max_prob_rate) * 3 < sample_dur) + return -1; + ++ ++ /* ++ * For devices with no configurable multi-rate retry, skip sampling ++ * below the per-group max throughput rate, and only use one sampling ++ * attempt per rate ++ */ ++ if (mp->hw->max_rates == 1 && ++ (minstrel_get_duration(mg->max_group_tp_rate[0]) < sample_dur || ++ mrs->attempts)) ++ return -1; ++ ++ /* Skip already sampled slow rates */ ++ if (sample_dur >= minstrel_get_duration(tp_rate1) && mrs->attempts) ++ return -1; ++ + /* + * Make sure that lower rates get sampled only occasionally, + * if the link is working perfectly. diff --git a/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch b/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch new file mode 100644 index 0000000000..f1e684cad8 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch @@ -0,0 +1,46 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 14 Jun 2019 21:14:22 +0200 +Subject: [PATCH] mac80211: minstrel_ht: fix default max throughput rate + indexes + +Use the first supported rate instead of 0 (which can be invalid) + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -487,7 +487,7 @@ minstrel_ht_assign_best_tp_rates(struct + tmp_prob = mi->groups[tmp_group].rates[tmp_idx].prob_ewma; + tmp_mcs_tp = minstrel_ht_get_tp_avg(mi, tmp_group, tmp_idx, tmp_prob); + +- if (tmp_cck_tp > tmp_mcs_tp) { ++ if (tmp_cck_tp_rate && tmp_cck_tp > tmp_mcs_tp) { + for(i = 0; i < MAX_THR_RATES; i++) { + minstrel_ht_sort_best_tp_rates(mi, tmp_cck_tp_rate[i], + tmp_mcs_tp_rate); +@@ -559,11 +559,19 @@ minstrel_ht_update_stats(struct minstrel + mi->sample_slow = 0; + mi->sample_count = 0; + +- /* Initialize global rate indexes */ +- for(j = 0; j < MAX_THR_RATES; j++){ +- tmp_mcs_tp_rate[j] = 0; +- tmp_cck_tp_rate[j] = 0; +- } ++ memset(tmp_mcs_tp_rate, 0, sizeof(tmp_mcs_tp_rate)); ++ memset(tmp_cck_tp_rate, 0, sizeof(tmp_cck_tp_rate)); ++ if (mi->supported[MINSTREL_CCK_GROUP]) ++ for (j = 0; j < ARRAY_SIZE(tmp_cck_tp_rate); j++) ++ tmp_cck_tp_rate[j] = MINSTREL_CCK_GROUP * MCS_GROUP_RATES; ++ ++ if (mi->supported[MINSTREL_VHT_GROUP_0]) ++ index = MINSTREL_VHT_GROUP_0 * MCS_GROUP_RATES; ++ else ++ index = MINSTREL_HT_GROUP_0 * MCS_GROUP_RATES; ++ ++ for (j = 0; j < ARRAY_SIZE(tmp_mcs_tp_rate); j++) ++ tmp_mcs_tp_rate[j] = index; + + /* Find best rate sets within all MCS groups*/ + for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) { diff --git a/package/kernel/mac80211/patches/subsys/366-mac80211-minstrel_ht-improve-rate-probing-for-device.patch b/package/kernel/mac80211/patches/subsys/366-mac80211-minstrel_ht-improve-rate-probing-for-device.patch new file mode 100644 index 0000000000..2dd57e0f22 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/366-mac80211-minstrel_ht-improve-rate-probing-for-device.patch @@ -0,0 +1,481 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 14 Jun 2019 21:15:47 +0200 +Subject: [PATCH] mac80211: minstrel_ht: improve rate probing for devices + with static fallback + +On some devices that only support static rate fallback tables sending rate +control probing packets can be really expensive. +Probing lower rates can already hurt throughput quite a bit. What hurts even +more is the fact that on mt76x0/mt76x2, single probing packets can only be +forced by directing packets at a different internal hardware queue, which +causes some heavy reordering and extra latency. +The reordering issue is mainly problematic while pushing lots of packets to +a particular station. If there is little activity, the overhead of probing is +neglegible. + +The static fallback behavior is designed to pretty much only handle rate +control algorithms that use only a very limited set of rates on which the +algorithm switches up/down based on packet error rate. + +In order to better support that kind of hardware, this patch implements a +different approach to rate probing where it switches to a slightly higher rate, +waits for tx status feedback, then updates the stats and switches back to +the new max throughput rate. This only triggers above a packet rate of 100 +per stats interval (~50ms). +For that kind of probing, the code has to reduce the set of probing rates +a lot more compared to single packet probing, so it uses only one packet +per MCS group which is either slightly faster, or as close as possible to +the max throughput rate. +This allows switching between similar rates with different numbers of +streams. The algorithm assumes that the hardware will work its way lower +within an MCS group in case of retransmissions, so that lower rates don't +have to be probed by the high packets per second rate probing code. + +To further reduce the search space, it also does not probe rates with lower +channel bandwidth than the max throughput rate. + +At the moment, these changes will only affect mt76x0/mt76x2. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/rc80211_minstrel.h ++++ b/net/mac80211/rc80211_minstrel.h +@@ -114,6 +114,7 @@ struct minstrel_sta_info { + struct minstrel_priv { + struct ieee80211_hw *hw; + bool has_mrr; ++ u32 sample_switch; + unsigned int cw_min; + unsigned int cw_max; + unsigned int max_retry; +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -21,6 +21,8 @@ + #define AVG_AMPDU_SIZE 16 + #define AVG_PKT_SIZE 1200 + ++#define SAMPLE_SWITCH_THR 100 ++ + /* Number of bits for an average sized packet */ + #define MCS_NBITS ((AVG_PKT_SIZE * AVG_AMPDU_SIZE) << 3) + +@@ -59,6 +61,7 @@ + [GROUP_IDX(_streams, _sgi, _ht40)] = { \ + .streams = _streams, \ + .shift = _s, \ ++ .bw = _ht40, \ + .flags = \ + IEEE80211_TX_RC_MCS | \ + (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \ +@@ -95,6 +98,7 @@ + [VHT_GROUP_IDX(_streams, _sgi, _bw)] = { \ + .streams = _streams, \ + .shift = _s, \ ++ .bw = _bw, \ + .flags = \ + IEEE80211_TX_RC_VHT_MCS | \ + (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \ +@@ -527,6 +531,133 @@ minstrel_ht_prob_rate_reduce_streams(str + } + } + ++static inline int ++minstrel_get_duration(int index) ++{ ++ const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES]; ++ unsigned int duration = group->duration[index % MCS_GROUP_RATES]; ++ return duration << group->shift; ++} ++ ++static bool ++minstrel_ht_probe_group(struct minstrel_ht_sta *mi, const struct mcs_group *tp_group, ++ int tp_idx, const struct mcs_group *group) ++{ ++ if (group->bw < tp_group->bw) ++ return false; ++ ++ if (group->streams == tp_group->streams) ++ return true; ++ ++ if (tp_idx < 4 && group->streams == tp_group->streams - 1) ++ return true; ++ ++ return group->streams == tp_group->streams + 1; ++} ++ ++static void ++minstrel_ht_find_probe_rates(struct minstrel_ht_sta *mi, u16 *rates, int *n_rates, ++ bool faster_rate) ++{ ++ const struct mcs_group *group, *tp_group; ++ int i, g, max_dur; ++ int tp_idx; ++ ++ tp_group = &minstrel_mcs_groups[mi->max_tp_rate[0] / MCS_GROUP_RATES]; ++ tp_idx = mi->max_tp_rate[0] % MCS_GROUP_RATES; ++ ++ max_dur = minstrel_get_duration(mi->max_tp_rate[0]); ++ if (faster_rate) ++ max_dur -= max_dur / 16; ++ ++ for (g = 0; g < MINSTREL_GROUPS_NB; g++) { ++ u16 supported = mi->supported[g]; ++ ++ if (!supported) ++ continue; ++ ++ group = &minstrel_mcs_groups[g]; ++ if (!minstrel_ht_probe_group(mi, tp_group, tp_idx, group)) ++ continue; ++ ++ for (i = 0; supported; supported >>= 1, i++) { ++ int idx; ++ ++ if (!(supported & 1)) ++ continue; ++ ++ if ((group->duration[i] << group->shift) > max_dur) ++ continue; ++ ++ idx = g * MCS_GROUP_RATES + i; ++ if (idx == mi->max_tp_rate[0]) ++ continue; ++ ++ rates[(*n_rates)++] = idx; ++ break; ++ } ++ } ++} ++ ++static void ++minstrel_ht_rate_sample_switch(struct minstrel_priv *mp, ++ struct minstrel_ht_sta *mi) ++{ ++ struct minstrel_rate_stats *mrs; ++ u16 rates[MINSTREL_GROUPS_NB]; ++ int n_rates = 0; ++ int probe_rate = 0; ++ bool faster_rate; ++ int i; ++ u8 random; ++ ++ /* ++ * Use rate switching instead of probing packets for devices with ++ * little control over retry fallback behavior ++ */ ++ if (mp->hw->max_rates > 1) ++ return; ++ ++ /* ++ * If the current EWMA prob is >75%, look for a rate that's 6.25% ++ * faster than the max tp rate. ++ * If that fails, look again for a rate that is at least as fast ++ */ ++ mrs = minstrel_get_ratestats(mi, mi->max_tp_rate[0]); ++ faster_rate = mrs->prob_ewma > MINSTREL_FRAC(75, 100); ++ minstrel_ht_find_probe_rates(mi, rates, &n_rates, faster_rate); ++ if (!n_rates && faster_rate) ++ minstrel_ht_find_probe_rates(mi, rates, &n_rates, false); ++ ++ /* If no suitable rate was found, try to pick the next one in the group */ ++ if (!n_rates) { ++ int g_idx = mi->max_tp_rate[0] / MCS_GROUP_RATES; ++ u16 supported = mi->supported[g_idx]; ++ ++ supported >>= mi->max_tp_rate[0] % MCS_GROUP_RATES; ++ for (i = 0; supported; i++) { ++ if (!(supported & 1)) ++ continue; ++ ++ probe_rate = mi->max_tp_rate[0] + i; ++ goto out; ++ } ++ ++ return; ++ } ++ ++ i = 0; ++ if (n_rates > 1) { ++ random = prandom_u32(); ++ i = random % n_rates; ++ } ++ probe_rate = rates[i]; ++ ++out: ++ mi->sample_rate = probe_rate; ++ mi->sample_mode = MINSTREL_SAMPLE_ACTIVE; ++} ++ + /* + * Update rate statistics and select new primary rates + * +@@ -537,7 +668,8 @@ minstrel_ht_prob_rate_reduce_streams(str + * higher throughput rates, even if the probablity is a bit lower + */ + static void +-minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) ++minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi, ++ bool sample) + { + struct minstrel_mcs_group_data *mg; + struct minstrel_rate_stats *mrs; +@@ -545,6 +677,18 @@ minstrel_ht_update_stats(struct minstrel + u16 tmp_mcs_tp_rate[MAX_THR_RATES], tmp_group_tp_rate[MAX_THR_RATES]; + u16 tmp_cck_tp_rate[MAX_THR_RATES], index; + ++ mi->sample_mode = MINSTREL_SAMPLE_IDLE; ++ ++ if (sample) { ++ mi->total_packets_cur = mi->total_packets - ++ mi->total_packets_last; ++ mi->total_packets_last = mi->total_packets; ++ } ++ if (!mp->sample_switch) ++ sample = false; ++ if (mi->total_packets_cur < SAMPLE_SWITCH_THR && mp->sample_switch != 1) ++ sample = false; ++ + if (mi->ampdu_packets > 0) { + if (!ieee80211_hw_check(mp->hw, TX_STATUS_NO_AMPDU_LEN)) + mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len, +@@ -631,12 +775,16 @@ minstrel_ht_update_stats(struct minstrel + /* try to sample all available rates during each interval */ + mi->sample_count *= 8; + ++ if (sample) ++ minstrel_ht_rate_sample_switch(mp, mi); ++ + #ifdef CPTCFG_MAC80211_DEBUGFS + /* use fixed index if set */ + if (mp->fixed_rate_idx != -1) { + for (i = 0; i < 4; i++) + mi->max_tp_rate[i] = mp->fixed_rate_idx; + mi->max_prob_rate = mp->fixed_rate_idx; ++ mi->sample_mode = MINSTREL_SAMPLE_IDLE; + } + #endif + +@@ -740,15 +888,17 @@ minstrel_ht_tx_status(void *priv, struct + struct minstrel_ht_sta_priv *msp = priv_sta; + struct minstrel_ht_sta *mi = &msp->ht; + struct ieee80211_tx_rate *ar = info->status.rates; +- struct minstrel_rate_stats *rate, *rate2; ++ struct minstrel_rate_stats *rate, *rate2, *rate_sample = NULL; + struct minstrel_priv *mp = priv; + bool last, update = false; ++ bool sample_status = false; + int i; + + if (!msp->is_ht) + return mac80211_minstrel.tx_status_ext(priv, sband, + &msp->legacy, st); + ++ + /* This packet was aggregated but doesn't carry status info */ + if ((info->flags & IEEE80211_TX_CTL_AMPDU) && + !(info->flags & IEEE80211_TX_STAT_AMPDU)) +@@ -774,12 +924,17 @@ minstrel_ht_tx_status(void *priv, struct + if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) + mi->sample_packets += info->status.ampdu_len; + ++ if (mi->sample_mode != MINSTREL_SAMPLE_IDLE) ++ rate_sample = minstrel_get_ratestats(mi, mi->sample_rate); ++ + last = !minstrel_ht_txstat_valid(mp, &ar[0]); + for (i = 0; !last; i++) { + last = (i == IEEE80211_TX_MAX_RATES - 1) || + !minstrel_ht_txstat_valid(mp, &ar[i + 1]); + + rate = minstrel_ht_get_stats(mp, mi, &ar[i]); ++ if (rate == rate_sample) ++ sample_status = true; + + if (last) + rate->success += info->status.ampdu_ack_len; +@@ -787,44 +942,60 @@ minstrel_ht_tx_status(void *priv, struct + rate->attempts += ar[i].count * info->status.ampdu_len; + } + +- /* +- * check for sudden death of spatial multiplexing, +- * downgrade to a lower number of streams if necessary. +- */ +- rate = minstrel_get_ratestats(mi, mi->max_tp_rate[0]); +- if (rate->attempts > 30 && +- MINSTREL_FRAC(rate->success, rate->attempts) < +- MINSTREL_FRAC(20, 100)) { +- minstrel_downgrade_rate(mi, &mi->max_tp_rate[0], true); ++ switch (mi->sample_mode) { ++ case MINSTREL_SAMPLE_IDLE: ++ break; ++ ++ case MINSTREL_SAMPLE_ACTIVE: ++ if (!sample_status) ++ break; ++ ++ mi->sample_mode = MINSTREL_SAMPLE_PENDING; + update = true; +- } ++ break; ++ ++ case MINSTREL_SAMPLE_PENDING: ++ if (sample_status) ++ break; + +- rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate[1]); +- if (rate2->attempts > 30 && +- MINSTREL_FRAC(rate2->success, rate2->attempts) < +- MINSTREL_FRAC(20, 100)) { +- minstrel_downgrade_rate(mi, &mi->max_tp_rate[1], false); + update = true; ++ minstrel_ht_update_stats(mp, mi, false); ++ break; ++ } ++ ++ ++ if (mp->hw->max_rates > 1) { ++ /* ++ * check for sudden death of spatial multiplexing, ++ * downgrade to a lower number of streams if necessary. ++ */ ++ rate = minstrel_get_ratestats(mi, mi->max_tp_rate[0]); ++ if (rate->attempts > 30 && ++ MINSTREL_FRAC(rate->success, rate->attempts) < ++ MINSTREL_FRAC(20, 100)) { ++ minstrel_downgrade_rate(mi, &mi->max_tp_rate[0], true); ++ update = true; ++ } ++ ++ rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate[1]); ++ if (rate2->attempts > 30 && ++ MINSTREL_FRAC(rate2->success, rate2->attempts) < ++ MINSTREL_FRAC(20, 100)) { ++ minstrel_downgrade_rate(mi, &mi->max_tp_rate[1], false); ++ update = true; ++ } + } + + if (time_after(jiffies, mi->last_stats_update + + (mp->update_interval / 2 * HZ) / 1000)) { + update = true; +- minstrel_ht_update_stats(mp, mi); ++ minstrel_ht_update_stats(mp, mi, true); + } + + if (update) + minstrel_ht_update_rates(mp, mi); + } + +-static inline int +-minstrel_get_duration(int index) +-{ +- const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES]; +- unsigned int duration = group->duration[index % MCS_GROUP_RATES]; +- return duration << group->shift; +-} +- + static void + minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi, + int index) +@@ -989,14 +1160,18 @@ static void + minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) + { + struct ieee80211_sta_rates *rates; ++ u16 first_rate = mi->max_tp_rate[0]; + int i = 0; + ++ if (mi->sample_mode == MINSTREL_SAMPLE_ACTIVE) ++ first_rate = mi->sample_rate; ++ + rates = kzalloc(sizeof(*rates), GFP_ATOMIC); + if (!rates) + return; + + /* Start with max_tp_rate[0] */ +- minstrel_ht_set_rate(mp, mi, rates, i++, mi->max_tp_rate[0]); ++ minstrel_ht_set_rate(mp, mi, rates, i++, first_rate); + + if (mp->hw->max_rates >= 3) { + /* At least 3 tx rates supported, use max_tp_rate[1] next */ +@@ -1023,6 +1198,11 @@ minstrel_get_sample_rate(struct minstrel + int tp_rate1, tp_rate2; + int sample_idx = 0; + ++ if (mp->hw->max_rates == 1 && mp->sample_switch && ++ (mi->total_packets_cur >= SAMPLE_SWITCH_THR || ++ mp->sample_switch == 1)) ++ return -1; ++ + if (mi->sample_wait > 0) { + mi->sample_wait--; + return -1; +@@ -1349,7 +1529,7 @@ minstrel_ht_update_caps(void *priv, stru + mi->supported[MINSTREL_CCK_GROUP] |= mi->cck_supported_short << 4; + + /* create an initial rate table with the lowest supported rates */ +- minstrel_ht_update_stats(mp, mi); ++ minstrel_ht_update_stats(mp, mi, true); + minstrel_ht_update_rates(mp, mi); + + return; +@@ -1467,6 +1647,8 @@ minstrel_ht_alloc(struct ieee80211_hw *h + if (!mp) + return NULL; + ++ mp->sample_switch = -1; ++ + /* contention window settings + * Just an approximation. Using the per-queue values would complicate + * the calculations and is probably unnecessary */ +@@ -1498,6 +1680,8 @@ minstrel_ht_alloc(struct ieee80211_hw *h + mp->fixed_rate_idx = (u32) -1; + debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, debugfsdir, + &mp->fixed_rate_idx); ++ debugfs_create_u32("sample_switch", S_IRUGO | S_IWUSR, debugfsdir, ++ &mp->sample_switch); + #endif + + minstrel_ht_init_cck_rates(mp); +--- a/net/mac80211/rc80211_minstrel_ht.h ++++ b/net/mac80211/rc80211_minstrel_ht.h +@@ -36,6 +36,7 @@ struct mcs_group { + u16 flags; + u8 streams; + u8 shift; ++ u8 bw; + u16 duration[MCS_GROUP_RATES]; + }; + +@@ -53,6 +54,12 @@ struct minstrel_mcs_group_data { + struct minstrel_rate_stats rates[MCS_GROUP_RATES]; + }; + ++enum minstrel_sample_mode { ++ MINSTREL_SAMPLE_IDLE, ++ MINSTREL_SAMPLE_ACTIVE, ++ MINSTREL_SAMPLE_PENDING, ++}; ++ + struct minstrel_ht_sta { + struct ieee80211_sta *sta; + +@@ -74,6 +81,8 @@ struct minstrel_ht_sta { + unsigned int overhead; + unsigned int overhead_rtscts; + ++ unsigned int total_packets_last; ++ unsigned int total_packets_cur; + unsigned int total_packets; + unsigned int sample_packets; + +@@ -85,6 +94,9 @@ struct minstrel_ht_sta { + u8 sample_count; + u8 sample_slow; + ++ enum minstrel_sample_mode sample_mode; ++ u16 sample_rate; ++ + /* current MCS group to be sampled */ + u8 sample_group; + |