diff options
Diffstat (limited to 'dynamic_twt_manager.c')
| -rw-r--r-- | dynamic_twt_manager.c | 870 |
1 files changed, 870 insertions, 0 deletions
diff --git a/dynamic_twt_manager.c b/dynamic_twt_manager.c new file mode 100644 index 0000000..1701a57 --- /dev/null +++ b/dynamic_twt_manager.c @@ -0,0 +1,870 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for Wifi performance tracker + * + * Copyright 2022 Google LLC. + * + * Author: Star Chang <starchang@google.com> + */ +#include <linux/debugfs.h> +#include <linux/workqueue.h> +#include <linux/delay.h> +#include "core.h" + +#define DYMAIC_TWT_CONFIG_ID 3 + +/* for tcp one pair case */ +#define TWT_IDLE_INTERVAL (500 * 1024) /* 512000 */ +#define TWT_IDLE_DURATION (768 * 32) /* 24576 */ +#define TWT_WEB_INTERVAL (104 * 1024) /* 106496 */ +#define TWT_WEB_DURATION (256 * 32) /* 8192 */ +#define TWT_YOUTUBE_INTERVAL (10 * 1024) /* 10240 */ +#define TWT_YOUTUBE_DURATION (256 * 32) /* 8192 */ + +/* define reason*/ +enum { + TWT_SETUP_REASON_FRAMEWORK = WLAN_PTRACKER_NOTIFY_MAX, + TWT_SETUP_REASON_FORCE, + TWT_SETUP_REASON_RUNTIME, + TWT_SETUP_REASON_MAX, +}; + +static const char *const reason2str[TWT_SETUP_REASON_MAX] = { + "tp", "scene_change", "scene_prep", "suspend", "sta_connect", + "sta_discont", "dytwt_enable", "dytwt_disable", "framework", + "force", "runtime", +}; + +static const char *const state2str[WLAN_SCENE_MAX] = { + "Idle", "Web", "Youtube", "Low latency", "Throughput" +}; + +static struct dytwt_scene_action dytwt_actions[WLAN_SCENE_MAX + 1] = { + { + .action = TWT_ACTION_SETUP, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + .wake_duration = TWT_IDLE_DURATION, + .wake_interval = TWT_IDLE_INTERVAL, + }, + }, + { + .action = TWT_ACTION_SETUP, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + .wake_duration = TWT_WEB_DURATION, + .wake_interval = TWT_WEB_INTERVAL, + }, + }, + { + .action = TWT_ACTION_TEARDOWN, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + .wake_duration = TWT_YOUTUBE_DURATION, + .wake_interval = TWT_YOUTUBE_INTERVAL, + }, + }, + { + .action = TWT_ACTION_TEARDOWN, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + }, + }, + { + .action = TWT_ACTION_TEARDOWN, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + }, + }, + /* used for force mode */ + { + .action = TWT_ACTION_SETUP, + .param = { + .config_id = DYMAIC_TWT_CONFIG_ID, + .nego_type = 0, + .trigger_type = 0, + .wake_duration = TWT_IDLE_DURATION, + .wake_interval = TWT_IDLE_INTERVAL, + }, + } +}; +#define TWT_ACTION_SIZE ARRAY_SIZE(dytwt_actions) + +static int dytwt_client_twt_setup(struct wlan_ptracker_client *client, u32 state) +{ + if (!client->dytwt_ops || !client->priv) + return -EINVAL; + + if (!client->dytwt_ops->setup) + return -EINVAL; + + if (state >= WLAN_SCENE_MAX) + return -EINVAL; + + return client->dytwt_ops->setup(client->priv, &dytwt_actions[state].param); +} + +static int dytwt_client_twt_teardown(struct wlan_ptracker_client *client, u32 state) +{ + if (!client->dytwt_ops || !client->priv) + return -EINVAL; + + if (!client->dytwt_ops->teardown) + return -EINVAL; + + if (state >= WLAN_SCENE_MAX) + return -EINVAL; + return client->dytwt_ops->teardown(client->priv, &dytwt_actions[state].param); +} + +static bool dytwt_client_twt_cap(struct wlan_ptracker_client *client) +{ + struct dytwt_cap param; + struct wlan_ptracker_core *core = client->core; + struct dytwt_manager *dytwt = core->dytwt; + int ret; + + if (!client->dytwt_ops || !client->priv) + return false; + + if (!client->dytwt_ops->get_cap) + return false; + + ret = client->dytwt_ops->get_cap(client->priv, ¶m); + + ptracker_dbg(core, "%d, %d, %d, %d\n", param.device_cap, param.peer_cap, + param.link_speed, param.rssi); + if (ret) + return false; + + if (!param.peer_cap || !param.device_cap) { + ptracker_err(core, "dytwt is not enabled due to capability: %d, %d\n", + param.device_cap, param.peer_cap); + return false; + } + + if (param.rssi != 0 && param.rssi < dytwt->rssi_threshold) { + ptracker_err(dytwt->core, "dytwt is not enabled due to rssi %d < %d\n", + param.rssi, dytwt->rssi_threshold); + return false; + } + + if (param.link_speed < dytwt->link_threshold) { + ptracker_err(dytwt->core, "dytwt is not enabled due to linkspeed %d < %d\n", + param.link_speed, dytwt->link_threshold); + return false; + } + return true; +} + +static int dytwt_client_twt_pwrstates(struct wlan_ptracker_client *client, + struct dytwt_pwr_state *state) +{ + if (!client->dytwt_ops || !client->priv) + return -EINVAL; + + if (!client->dytwt_ops->get_pwrstates) + return -EINVAL; + + return client->dytwt_ops->get_pwrstates(client->priv, state); +} + +static int dytwt_client_twt_get_stats(struct wlan_ptracker_client *client, + struct dytwt_stats *stats) +{ + if (!client->dytwt_ops || !client->priv) + return -EINVAL; + + if (!client->dytwt_ops->get_stats) + return -EINVAL; + + return client->dytwt_ops->get_stats(client->priv, stats); +} + +static int dytwt_client_twt_get_status(struct wlan_ptracker_client *client, + struct dytwt_status *status) +{ + if (!client->dytwt_ops || !client->priv) + return -EINVAL; + + if (!client->dytwt_ops->get_status) + return -EINVAL; + + return client->dytwt_ops->get_status(client->priv, status); +} + +static inline void dytwt_record_get_pwr(u64 asleep, u64 awake, u64 *total, int *percent) +{ + /* for percent */ + *total = (asleep + awake) / 100; + *percent = (*total == 0) ? 0 : (asleep / *total); + /* trans 100 us to ms */ + *total /= 10; +} + +static int dytwt_record_priv_read(struct wlan_ptracker_core *core, void *cur, void *next, + char *buf, int len) +{ + struct dytwt_entry *c = cur; + struct dytwt_entry *n = next; + int period_percent, total_percent; + u64 period_time, total_time; + u64 awake, asleep; + + /* next is the current state */ + if (n->pwr.asleep < c->pwr.asleep) { + struct dytwt_pwr_state pwr; + dytwt_client_twt_pwrstates(core->client, &pwr); + awake = pwr.awake - c->pwr.awake; + asleep = pwr.asleep - c->pwr.asleep; + /* get total */ + dytwt_record_get_pwr(pwr.asleep, pwr.awake, &total_time, &total_percent); + } else { + /* get period */ + awake = n->pwr.awake - c->pwr.awake; + asleep = n->pwr.asleep - c->pwr.asleep; + /* get total */ + dytwt_record_get_pwr(c->pwr.asleep, c->pwr.awake, &total_time, &total_percent); + } + dytwt_record_get_pwr(asleep, awake, &period_time, &period_percent); + return scnprintf(buf, len, + "Applied: %s, Time: %llu (%llu) ms, Percent: %d%% (%d%%) Reason: %s, Rate: %d", + c->apply ? "TRUE" : "FALSE", period_time, total_time, period_percent, total_percent, + reason2str[c->reason], c->rate); +} + +static void dytwt_counter_update(struct dytwt_manager *dytwt, struct dytwt_pwr_state *pwr) +{ + struct dytwt_counters *counter = &dytwt->counters; + struct dytwt_statistic *stat = &counter->scene[dytwt->prev]; + u64 asleep = pwr->asleep - counter->prev_asleep; + u64 awake = pwr->awake - counter->prev_awake; + u64 count = pwr->count - counter->prev_asleep_cnt; + + stat->asleep += asleep; + stat->awake += awake; + counter->prev_asleep = pwr->asleep; + counter->prev_awake = pwr->awake; + counter->prev_asleep_cnt = pwr->count; + counter->total_awake += awake; + counter->total_sleep += asleep; + counter->total_sleep_cnt += count; +} + +static void dytwt_mgmt_history_store(struct wlan_ptracker_client *client, + struct dytwt_manager *dytwt, struct wlan_scene_event *msg, bool apply, u32 reason) +{ + struct dytwt_entry *entry; + + /* record assign base*/ + entry = wlan_ptracker_history_store(dytwt->hm, msg->dst); + if (!entry) + return; + /* record private values */ + entry->apply = apply; + entry->reason = reason; + entry->rate = msg->rate; + dytwt_client_twt_pwrstates(client, &entry->pwr); + dytwt_counter_update(dytwt, &entry->pwr); + /* prev will be used for decided teardown or not. */ + dytwt->prev = msg->dst; +} + +/* This function is running in thread context */ +static int _dytwt_scene_change_handler(struct dytwt_manager *dytwt, + struct wlan_ptracker_client *client) +{ + struct wlan_ptracker_core *core = client->core; + struct wlan_scene_event *msg = &core->fsm.msg; + struct dytwt_scene_action *act; + bool apply = false; + u32 state = msg->dst; + int ret = 0; + + if (!(dytwt->feature_flag & BIT(FEATURE_FLAG_TWT))) + goto out; + + if (!dytwt_client_twt_cap(client)) { + ptracker_dbg(dytwt->core, "twt is not supported on device or peer\n"); + goto out; + } + act = &dytwt_actions[state]; + + /* follow action to setup */ + if (act->action == TWT_ACTION_SETUP) + ret = dytwt_client_twt_setup(client, state); + apply = ret ? false : true; +out: + /* store record of history even twt is not applied */ + dytwt_mgmt_history_store(client, dytwt, msg, apply, msg->reason); + ptracker_dbg(dytwt->core, "twt setup for state: %d, reason: %s, ret: %d\n", + state, reason2str[msg->reason], ret); + return ret; +} + +static void dytwt_delay_setup(struct work_struct *work) +{ + struct dytwt_manager *dytwt = container_of(work, struct dytwt_manager, setup_wq.work); + struct wlan_ptracker_core *core = dytwt->core; + struct wlan_ptracker_client *client; + + if (!core) + return; + + client = core->client; + /* for first time update value is required*/ + dytwt->twt_cap = dytwt_client_twt_cap(client); + _dytwt_scene_change_handler(dytwt, client); +} + +#define TWT_WAIT_STA_READY_TIME 2000 +static int dytwt_scene_change_handler(struct wlan_ptracker_client *client) +{ + struct wlan_ptracker_core *core = client->core; + struct dytwt_manager *dytwt = core->dytwt; + struct wlan_scene_event *msg = &core->fsm.msg; + + if (msg->reason == WLAN_PTRACKER_NOTIFY_STA_CONNECT) + schedule_delayed_work(&dytwt->setup_wq, msecs_to_jiffies(TWT_WAIT_STA_READY_TIME)); + else + _dytwt_scene_change_handler(dytwt, client); + return 0; +} + +#define TWT_HISTORY_BUF_SIZE 10240 +static ssize_t twt_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) +{ + struct wlan_ptracker_core *core = file->private_data; + struct dytwt_manager *dytwt = core->dytwt; + char *buf; + int len; + ssize_t ret; + + buf = vmalloc(TWT_HISTORY_BUF_SIZE); + + if (!buf) + return -ENOMEM; + + len = wlan_ptracker_history_read(core, dytwt->hm, buf, TWT_HISTORY_BUF_SIZE); + ret = simple_read_from_buffer(userbuf, count, ppos, buf, len); + vfree(buf); + return ret; +} + +static const struct file_operations twt_ops = { + .open = simple_open, + .read = twt_read, + .llseek = generic_file_llseek, +}; + +static void dytwt_force_twt_setup(struct wlan_ptracker_client *client, struct dytwt_manager *dytwt, + u32 reason) +{ + int ret = 0; + bool apply = false; + u32 state = dytwt->state; + struct wlan_scene_event msg; + struct dytwt_scene_action *act = &dytwt_actions[state]; + + switch(act->action) { + case TWT_ACTION_SETUP: + ret = dytwt_client_twt_setup(client, state); + break; + case TWT_ACTION_TEARDOWN: + ret = dytwt_client_twt_teardown(client, state); + break; + default: + break; + } + apply = ret ? false : true; + msg.dst = dytwt->state; + /* store record of history even twt is not applied */ + dytwt_mgmt_history_store(client, dytwt, &msg, apply, reason); +} + +static inline void twt_enable(struct wlan_ptracker_client *client, bool enable, u32 reason) +{ + struct wlan_ptracker_core *core = client->core; + struct dytwt_manager *dytwt = core->dytwt; + + if (enable) { + dytwt->feature_flag |= BIT(FEATURE_FLAG_TWT); + dytwt_scene_change_handler(client); + } else { + dytwt->state = WLAN_SCENE_TPUT; + dytwt_force_twt_setup(client, dytwt, reason); + dytwt->feature_flag &= ~BIT(FEATURE_FLAG_TWT); + } +} + +#define DYTWT_RUNTIME_TIMER 2000 +static void dytwt_runtime(struct work_struct *work) +{ + struct dytwt_manager *dytwt = container_of(work, struct dytwt_manager, wq.work); + struct dytwt_scene_action *act; + struct wlan_ptracker_client *client; + + if (!dytwt->core) + goto end; + + if (dytwt->prev == WLAN_SCENE_MAX) + goto end; + + client = dytwt->core->client; + act = &dytwt_actions[dytwt->prev]; + /* update twt_cap periodically */ + dytwt->twt_cap = dytwt_client_twt_cap(client); + if (act->action == TWT_ACTION_SETUP && !dytwt->twt_cap) { + dytwt->state = WLAN_SCENE_TPUT; + ptracker_dbg(dytwt->core, "teardown twt due to hit threshold\n"); + dytwt_force_twt_setup(client, dytwt, TWT_SETUP_REASON_RUNTIME); + } +end: + schedule_delayed_work(&dytwt->wq, msecs_to_jiffies(DYTWT_RUNTIME_TIMER)); +} + +static void update_twt_flag(struct wlan_ptracker_core *core, struct dytwt_manager *dytwt) +{ + twt_enable(core->client, !(dytwt->feature_flag & BIT(FEATURE_FLAG_TWT)), + TWT_SETUP_REASON_FORCE); +} + +static void update_twt_parameters(struct dytwt_manager *dytwt) +{ + u32 state = dytwt->state; + struct dytwt_scene_action *cfg_act = &dytwt_actions[WLAN_SCENE_MAX]; + struct dytwt_scene_action *cur_act = &dytwt_actions[state]; + + cur_act->param.wake_duration = cfg_act->param.wake_duration; + cur_act->param.wake_interval = cfg_act->param.wake_interval; + cur_act->action = cfg_act->action; +} + +static void dytwt_stats_dump(struct wlan_ptracker_client *client, struct dytwt_manager *dytwt) +{ + struct dytwt_stats stats; + struct wlan_ptracker_core *core = dytwt->core; + + stats.config_id = DYMAIC_TWT_CONFIG_ID; + dytwt_client_twt_get_stats(client, &stats); + + ptracker_info(core, "rx_ucast_pkts: %d, rx_pkts_retried: %d\n", + stats.rx_ucast_pkts, stats.rx_pkts_retried); + ptracker_info(core, "rx_pkt_sz_avg: %d, rx_pkts_avg: %d\n", + stats.rx_pkt_sz_avg, stats.rx_pkts_avg); + ptracker_info(core, "rx_pkts_min: %d, rx_pkts_max: %d\n", + stats.rx_pkts_min, stats.rx_pkts_max); + ptracker_info(core, "tx_ucast_pkts: %d, tx_failures: %d\n", + stats.tx_ucast_pkts, stats.tx_failures); + ptracker_info(core, "tx_pkt_sz_avg: %d, tx_pkts_avg: %d\n", + stats.tx_pkt_sz_avg, stats.tx_pkts_avg); + ptracker_info(core, "tx_pkts_min: %d, tx_pkts_max: %d\n", + stats.tx_pkts_min, stats.tx_pkts_max); + ptracker_info(core, "sp_seq: %d, eosp_count: %d, eosp_dur_avg: %d\n", + stats.sp_seq, stats.eosp_count, stats.eosp_dur_avg); +} + +static void dytwt_status_dump(struct wlan_ptracker_client *client, struct dytwt_manager *dytwt) +{ + struct dytwt_status status; + + status.config_id = DYMAIC_TWT_CONFIG_ID; + dytwt_client_twt_get_status(client, &status); + + ptracker_info(dytwt->core, "config_id: %d, flow_id: %d, flow_flags: %x\n", + status.config_id, status.flow_id, status.flow_flags); + ptracker_info(dytwt->core, "setup_cmd: %d, channel: %d, nego_type: %d\n", + status.setup_cmd, status.channel, status.nego_type); + ptracker_info(dytwt->core, "wake_dur: %d, wake_int: %d\n", + status.wake_dur, status.wake_int); +} + +static int dytwt_debugfs_action(struct wlan_ptracker_core *core, u32 action) +{ + struct dytwt_pwr_state pwr_state; + struct dytwt_manager *dytwt = core->dytwt; + struct wlan_ptracker_client *client = core->client; + + switch (action) { + case TWT_TEST_FORCE_STATE: + dytwt_force_twt_setup(client, dytwt, TWT_SETUP_REASON_FORCE); + break; + case TWT_TEST_CAP: + dytwt_client_twt_cap(client); + break; + case TWT_TEST_PWRSTATS: + dytwt_client_twt_pwrstates(client, &pwr_state); + break; + case TWT_TEST_ONOFF: + update_twt_flag(core, dytwt); + break; + case TWT_TEST_SET_PARAM: + update_twt_parameters(dytwt); + break; + case TWT_TEST_DUMP_STATS: + dytwt_stats_dump(client, dytwt); + break; + case TWT_TEST_DUMP_STATUS: + dytwt_status_dump(client, dytwt); + break; + default: + ptracker_err(core, "action %d is not supported\n", action); + return -ENOTSUPP; + } + return 0; +} + +static ssize_t twt_params_write(struct file *file, const char __user *buf, size_t len, + loff_t *ppos) +{ + struct wlan_ptracker_core *core = file->private_data; + u32 action; + + if (kstrtouint_from_user(buf, len, 10, &action)) + return -EFAULT; + + dytwt_debugfs_action(core, action); + return len; +} + +static int dytwt_params_read(char *buf, int len) +{ + struct dytwt_scene_action *act; + struct dytwt_setup_param *param; + int count = 0; + int i; + + count += scnprintf(buf + count, len - count, + "===================\n"); + for (i = 0 ; i < TWT_ACTION_SIZE; i++) { + act = &dytwt_actions[i]; + param = &act->param; + count += scnprintf(buf + count, len - count, + "state: %d, action: %d\n", i, act->action); + count += scnprintf(buf + count, len - count, + "config_id: %d, nego_type: %d\n", + param->config_id, param->nego_type); + count += scnprintf(buf + count, len - count, + "wake_interval: %u\n", param->wake_interval); + count += scnprintf(buf + count, len - count, + "wake_duration: %u\n", param->wake_duration); + count += scnprintf(buf + count, len - count, + "===================\n"); + } + return count; +} + +#define TWT_PARAM_BUF_SIZE 1024 +static ssize_t twt_params_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) +{ + char *buf; + int len; + int ret; + + buf = vmalloc(TWT_PARAM_BUF_SIZE); + if (!buf) + return -ENOMEM; + len = dytwt_params_read(buf, TWT_PARAM_BUF_SIZE); + ret = simple_read_from_buffer(userbuf, count, ppos, buf, len); + vfree(buf); + return ret; +} + +static const struct file_operations twt_params_ops = { + .open = simple_open, + .read = twt_params_read, + .write = twt_params_write, + .llseek = generic_file_llseek, +}; + +static int dytwt_statistic_read(struct wlan_ptracker_core *core, char *buf, int len) +{ + struct dytwt_manager *dytwt = core->dytwt; + struct dytwt_counters *counter = &dytwt->counters; + struct dytwt_statistic *ds; + struct dytwt_pwr_state pwr; + int buf_count = 0; + int i, percent; + u64 total, awake, asleep, count; + + buf_count += scnprintf(buf + buf_count, len - buf_count, + "==== Dynamic TWT Setup Statistics ===\n"); + dytwt_client_twt_pwrstates(dytwt->core->client, &pwr); + for (i = 0 ; i < WLAN_SCENE_MAX; i++) { + ds = &counter->scene[i]; + awake = ds->awake; + asleep = ds->asleep; + if (i == dytwt->prev) { + awake += pwr.awake - counter->prev_awake; + asleep += pwr.asleep - counter->prev_asleep; + } + dytwt_record_get_pwr(asleep, awake, &total, &percent); + buf_count += scnprintf(buf + buf_count, len - buf_count, + "%s, total: %llu, awake: %llu, asleep: %llu (%d%%)\n", state2str[i], total, + awake / 1000, asleep / 1000, percent); + } + + awake = counter->total_awake + pwr.awake - counter->prev_awake; + asleep = counter->total_sleep + pwr.asleep - counter->prev_asleep; + count = counter->total_sleep_cnt + pwr.count - counter->prev_asleep_cnt; + dytwt_record_get_pwr(asleep, awake, &total, &percent); + buf_count += scnprintf(buf + buf_count, len - buf_count, + "All, total: %llu, awake: %llu, asleep: %llu (%d%%), sleep cnt: %llu\n", + total, awake / 1000, asleep / 1000, percent, count); + return buf_count; +} + +#define TWT_STATISTIC_SIZE 512 +static ssize_t twt_statistic_read(struct file *file, char __user *userbuf, size_t count, + loff_t *ppos) +{ + struct wlan_ptracker_core *core = file->private_data; + char *buf; + int len; + int ret; + + buf = vmalloc(TWT_STATISTIC_SIZE); + if (!buf) + return -ENOMEM; + + len = dytwt_statistic_read(core, buf, TWT_STATISTIC_SIZE); + ret = simple_read_from_buffer(userbuf, count, ppos, buf, len); + vfree(buf); + return ret; +} + +static const struct file_operations twt_statistic_ops = { + .open = simple_open, + .read = twt_statistic_read, + .llseek = generic_file_llseek, +}; + +static void dytwt_scene_change_prepare_handler(struct wlan_ptracker_client *client) +{ + struct wlan_ptracker_core *core = client->core; + struct dytwt_manager *dytwt = core->dytwt; + u32 prev_state = dytwt->prev; + + if (!(dytwt->feature_flag & BIT(FEATURE_FLAG_TWT))) + return; + + /* + * prepare to change state, teardown the original setup first. + * This change is not recorded in history. + */ + if (dytwt_actions[prev_state].action == TWT_ACTION_SETUP) + dytwt_client_twt_teardown(client, dytwt->prev); +} + +static int dytwt_notifier_handler(struct notifier_block *nb, unsigned long event, void *ptr) +{ + struct wlan_ptracker_core *core = ptr; + struct wlan_ptracker_client *client = core->client; + struct dytwt_manager *dytwt = core->dytwt; + + switch (event) { + case WLAN_PTRACKER_NOTIFY_SCENE_CHANGE: + dytwt_scene_change_handler(client); + break; + case WLAN_PTRACKER_NOTIFY_SCENE_CHANGE_PREPARE: + dytwt_scene_change_prepare_handler(client); + break; + case WLAN_PTRACKER_NOTIFY_STA_CONNECT: + schedule_delayed_work(&dytwt->wq, msecs_to_jiffies(DYTWT_RUNTIME_TIMER)); + break; + case WLAN_PTRACKER_NOTIFY_STA_DISCONNECT: + cancel_delayed_work_sync(&dytwt->wq); + break; + case WLAN_PTRACKER_NOTIFY_DYTWT_ENABLE: + twt_enable(client, true, TWT_SETUP_REASON_FRAMEWORK); + break; + case WLAN_PTRACKER_NOTIFY_DYTWT_DISABLE: + twt_enable(client, false, TWT_SETUP_REASON_FRAMEWORK); + break; + default: + break; + } + return NOTIFY_OK; +} + +static ssize_t dytwt_dumpstate_statistic(struct dytwt_manager *dytwt, char *buf) +{ + return dytwt_statistic_read(dytwt->core, buf, PAGE_SIZE); +} + +static ssize_t dytwt_dumpstate_history(struct dytwt_manager *dytwt, char *buf) +{ + return wlan_ptracker_history_read(dytwt->core, dytwt->hm, buf, PAGE_SIZE); +} + +static struct dytwt_kobj_attr attr_twt_history = + __ATTR(history, 0664, dytwt_dumpstate_history, NULL); + +static struct dytwt_kobj_attr attr_twt_statistic = + __ATTR(statistic, 0664, dytwt_dumpstate_statistic, NULL); + +static struct attribute *default_file_attrs[] = { + &attr_twt_history.attr, + &attr_twt_statistic.attr, + NULL, +}; + +static ssize_t dytwt_sysfs_show(struct kobject *kobj, struct attribute *attr, char *buf) +{ + struct dytwt_manager *dytwt; + struct dytwt_kobj_attr *dytwt_attr; + int ret = -EIO; + + dytwt = container_of(kobj, struct dytwt_manager, kobj); + dytwt_attr = container_of(attr, struct dytwt_kobj_attr, attr); + + if (dytwt_attr->show) + ret = dytwt_attr->show(dytwt, buf); + return ret; +} + +static ssize_t dytwt_sysfs_store(struct kobject *kobj, struct attribute *attr, const char *buf, + size_t count) +{ + struct dytwt_manager *dytwt; + struct dytwt_kobj_attr *dytwt_attr; + int ret = -EIO; + + dytwt = container_of(kobj, struct dytwt_manager, kobj); + dytwt_attr = container_of(attr, struct dytwt_kobj_attr, attr); + + if (dytwt_attr->show) + ret = dytwt_attr->store(dytwt, buf, count); + return ret; + +} + +static struct sysfs_ops dytwt_sysfs_ops = { + .show = dytwt_sysfs_show, + .store = dytwt_sysfs_store, +}; + +static struct kobj_type dytwt_ktype = { + .sysfs_ops = &dytwt_sysfs_ops, + .default_attrs = default_file_attrs, +}; + +static int dytwt_sysfs_init(struct dytwt_manager *dytwt, struct wlan_ptracker_debugfs *debugfs) +{ + int ret; + + ret = kobject_init_and_add(&dytwt->kobj, &dytwt_ktype, &debugfs->kobj, "twt"); + if (ret) + kobject_put(&dytwt->kobj); + return ret; +} + +static void dytwt_sysfs_exit(struct dytwt_manager *dytwt) +{ + kobject_del(&dytwt->kobj); + kobject_put(&dytwt->kobj); +} + +static int dytwt_debugfs_init(struct wlan_ptracker_core *core) +{ + struct wlan_ptracker_debugfs *debugfs = &core->debugfs; + struct dytwt_manager *dytwt = core->dytwt; + struct dytwt_scene_action *act = &dytwt_actions[WLAN_SCENE_MAX]; + + dytwt->feature_flag |= BIT(FEATURE_FLAG_TWT); + dytwt->dir = debugfs_create_dir("twt", debugfs->root); + if (!dytwt->dir) + return -ENODEV; + + debugfs_create_file("history", 0666, dytwt->dir, core, &twt_ops); + debugfs_create_file("statistics", 0666, dytwt->dir, core, &twt_statistic_ops); + debugfs_create_file("twt_params", 0666, dytwt->dir, core, &twt_params_ops); + debugfs_create_u32("state", 0666, dytwt->dir, &dytwt->state); + debugfs_create_u32("wake_interval", 0666, dytwt->dir, &act->param.wake_interval); + debugfs_create_u32("wake_duration", 0666, dytwt->dir, &act->param.wake_duration); + debugfs_create_u32("action", 0666, dytwt->dir, &act->action); + debugfs_create_u32("feature_flag", 0666, dytwt->dir, &dytwt->feature_flag); + dytwt_sysfs_init(dytwt, debugfs); + return 0; +} + +static void dytwt_debugfs_exit(struct dytwt_manager *dytwt) +{ + if (dytwt->dir) + debugfs_remove_recursive(dytwt->dir); + dytwt_sysfs_exit(dytwt); +} + +#define TWT_DEFAULT_MIN_LINK_SPEED (180000) +#define TWT_DEFAULT_MIN_RSSI (-70) +#define DYTWT_RECORD_MAX 30 +static struct dytwt_manager *dytwt_mgmt_init(struct wlan_ptracker_core *core) +{ + struct history_manager *hm; + struct dytwt_manager *dytwt = kzalloc(sizeof(struct dytwt_manager), GFP_KERNEL); + + if (!dytwt) + return NULL; + + dytwt->state = WLAN_SCENE_IDLE; + dytwt->prev = WLAN_SCENE_MAX; + dytwt->core = core; + dytwt->link_threshold = TWT_DEFAULT_MIN_LINK_SPEED; + dytwt->rssi_threshold = TWT_DEFAULT_MIN_RSSI; + INIT_DELAYED_WORK(&dytwt->wq, dytwt_runtime); + INIT_DELAYED_WORK(&dytwt->setup_wq, dytwt_delay_setup); + hm = wlan_ptracker_history_create(DYTWT_RECORD_MAX, sizeof(struct dytwt_entry)); + if (!hm) { + kfree(dytwt); + return NULL; + } + strncpy(hm->name, "Dynamic TWT Setup", sizeof(hm->name)); + hm->priv_read = dytwt_record_priv_read; + dytwt->hm = hm; + + return dytwt; +} + +static void dytwt_mgmt_exit(struct dytwt_manager *dytwt) +{ + cancel_delayed_work_sync(&dytwt->wq); + cancel_delayed_work_sync(&dytwt->setup_wq); + wlan_ptracker_history_destroy(dytwt->hm); + kfree(dytwt); +} + +static struct notifier_block twt_nb = { + .priority = 0, + .notifier_call = dytwt_notifier_handler, +}; + +int dytwt_init(struct wlan_ptracker_core *core) +{ + core->dytwt = dytwt_mgmt_init(core); + dytwt_debugfs_init(core); + return wlan_ptracker_register_notifier(&core->notifier, &twt_nb); +} + +void dytwt_exit(struct wlan_ptracker_core *core) +{ + struct dytwt_manager *dytwt = core->dytwt; + + core->dytwt = NULL; + wlan_ptracker_unregister_notifier(&core->notifier, &twt_nb); + + if (!dytwt) + return; + + dytwt_debugfs_exit(dytwt); + dytwt_mgmt_exit(dytwt); +} |