// SPDX-License-Identifier: GPL-2.0-only /****************************************************************************** * * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. * * Contact Information: * Intel Linux Wireless <[email protected]> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #include <linux/kernel.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <net/mac80211.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/delay.h> #include <linux/workqueue.h> #include "commands.h" #include "3945.h" #define RS_NAME … static s32 il3945_expected_tpt_g[RATE_COUNT_3945] = …; static s32 il3945_expected_tpt_g_prot[RATE_COUNT_3945] = …; static s32 il3945_expected_tpt_a[RATE_COUNT_3945] = …; static s32 il3945_expected_tpt_b[RATE_COUNT_3945] = …; struct il3945_tpt_entry { … }; static struct il3945_tpt_entry il3945_tpt_table_a[] = …; static struct il3945_tpt_entry il3945_tpt_table_g[] = …; #define RATE_MAX_WINDOW … #define RATE_FLUSH … #define RATE_WIN_FLUSH … #define IL39_RATE_HIGH_TH … #define IL_SUCCESS_UP_TH … #define IL_SUCCESS_DOWN_TH … #define RATE_MIN_FAILURE_TH … #define RATE_MIN_SUCCESS_TH … #define RATE_DECREASE_TH … #define RATE_RETRY_TH … static u8 il3945_get_rate_idx_by_rssi(s32 rssi, enum nl80211_band band) { … } static void il3945_clear_win(struct il3945_rate_scale_data *win) { … } /* * il3945_rate_scale_flush_wins - flush out the rate scale wins * * Returns the number of wins that have gathered data but were * not flushed. If there were any that were not flushed, then * reschedule the rate flushing routine. */ static int il3945_rate_scale_flush_wins(struct il3945_rs_sta *rs_sta) { … } #define RATE_FLUSH_MAX … #define RATE_FLUSH_MIN … #define IL_AVERAGE_PACKETS … static void il3945_bg_rate_scale_flush(struct timer_list *t) { … } /* * il3945_collect_tx_data - Update the success/failure sliding win * * We keep a sliding win of the last 64 packets transmitted * at this rate. win->data contains the bitmask of successful * packets. */ static void il3945_collect_tx_data(struct il3945_rs_sta *rs_sta, struct il3945_rate_scale_data *win, int success, int retries, int idx) { … } /* * Called after adding a new station to initialize rate scaling */ void il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id) { … } static void * il3945_rs_alloc(struct ieee80211_hw *hw) { … } /* rate scale requires free function to be implemented */ static void il3945_rs_free(void *il) { … } static void * il3945_rs_alloc_sta(void *il_priv, struct ieee80211_sta *sta, gfp_t gfp) { … } static void il3945_rs_free_sta(void *il_priv, struct ieee80211_sta *sta, void *il_sta) { … } /* * il3945_rs_tx_status - Update rate control values based on Tx results * * NOTE: Uses il_priv->retry_rate for the # of retries attempted by * the hardware for each rate. */ static void il3945_rs_tx_status(void *il_rate, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *il_sta, struct sk_buff *skb) { … } static u16 il3945_get_adjacent_rate(struct il3945_rs_sta *rs_sta, u8 idx, u16 rate_mask, enum nl80211_band band) { … } /* * il3945_rs_get_rate - find the rate for the requested packet * * Returns the ieee80211_rate structure allocated by the driver. * * The rate control algorithm has no internal mapping between hw_mode's * rate ordering and the rate ordering used by the rate control algorithm. * * The rate control algorithm uses a single table of rates that goes across * the entire A/B/G spectrum vs. being limited to just one particular * hw_mode. * * As such, we can't convert the idx obtained below into the hw_mode's * rate table and must reference the driver allocated rate table * */ static void il3945_rs_get_rate(void *il_r, struct ieee80211_sta *sta, void *il_sta, struct ieee80211_tx_rate_control *txrc) { … } #ifdef CONFIG_MAC80211_DEBUGFS static ssize_t il3945_sta_dbgfs_stats_table_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations rs_sta_dbgfs_stats_table_ops = …; static void il3945_add_debugfs(void *il, void *il_sta, struct dentry *dir) { … } #endif /* * Initialization of rate scaling information is done by driver after * the station is added. Since mac80211 calls this function before a * station is added we ignore it. */ static void il3945_rs_rate_init_stub(void *il_r, struct ieee80211_supported_band *sband, struct cfg80211_chan_def *chandef, struct ieee80211_sta *sta, void *il_sta) { … } static const struct rate_control_ops rs_ops = …; void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id) { … } int il3945_rate_control_register(void) { … } void il3945_rate_control_unregister(void) { … }
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