// SPDX-License-Identifier: GPL-2.0-only /* * Driver for Wifi performance tracker * * Copyright 2022 Google LLC. * * Author: Star Chang */ #include #include #include #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_TEARDOWN, .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); }