X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Fiwlwifi%2Fiwl-agn-rs.c;h=346dc06fa7b77f79f5cdd986653e19b8d547bf56;hb=4a86eaa46dbaf26498bcf0bb3535d4fd36a32858;hp=754fef5b592f656f20cca1e13b74b9361e2d01b9;hpb=3ac7f14694dd38273d9d96f1c873233d71190c15;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c index 754fef5..346dc06 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c @@ -1,6 +1,6 @@ /****************************************************************************** * - * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved. + * Copyright(c) 2005 - 2009 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as @@ -19,7 +19,7 @@ * file called LICENSE. * * Contact Information: - * James P. Ketrenos + * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ @@ -35,12 +35,9 @@ #include -#include "../net/mac80211/rate.h" - #include "iwl-dev.h" #include "iwl-sta.h" #include "iwl-core.h" -#include "iwl-helpers.h" #define RS_NAME "iwl-agn-rs" @@ -52,8 +49,10 @@ #define IWL_RATE_MIN_FAILURE_TH 6 /* min failures to calc tpt */ #define IWL_RATE_MIN_SUCCESS_TH 8 /* min successes to calc tpt */ +/* max allowed rate miss before sync LQ cmd */ +#define IWL_MISSED_RATE_MAX 15 /* max time to accum history 2 seconds */ -#define IWL_RATE_SCALE_FLUSH_INTVL (2*HZ) +#define IWL_RATE_SCALE_FLUSH_INTVL (3*HZ) static u8 rs_ht_to_legacy[] = { IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX, @@ -98,9 +97,10 @@ struct iwl_scale_tbl_info { enum iwl_table_type lq_type; u8 ant_type; u8 is_SGI; /* 1 = short guard interval */ - u8 is_fat; /* 1 = 40 MHz channel width */ + u8 is_ht40; /* 1 = 40 MHz channel width */ u8 is_dup; /* 1 = duplicated data streams */ u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */ + u8 max_search; /* maximun number of tables we can search */ s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ u32 current_rate; /* rate_n_flags, uCode API format */ struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ @@ -136,7 +136,7 @@ struct iwl_lq_sta { u32 table_count; u32 total_failed; /* total failed frames, any/all rates */ u32 total_success; /* total successful frames, any/all rates */ - u32 flush_timer; /* time staying in mode before new search */ + u64 flush_timer; /* time staying in mode before new search */ u8 action_counter; /* # mode-switch actions tried */ u8 is_green; @@ -151,6 +151,8 @@ struct iwl_lq_sta { u16 active_mimo2_rate; u16 active_mimo3_rate; u16 active_rate_basic; + s8 max_rate_idx; /* Max rate set by user */ + u8 missed_rate_counter; struct iwl_link_quality_cmd lq; struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ @@ -159,17 +161,23 @@ struct iwl_lq_sta { #ifdef CONFIG_MAC80211_DEBUGFS struct dentry *rs_sta_dbgfs_scale_table_file; struct dentry *rs_sta_dbgfs_stats_table_file; + struct dentry *rs_sta_dbgfs_rate_scale_data_file; struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; u32 dbg_fixed_rate; #endif struct iwl_priv *drv; + + /* used to be in sta_info */ + int last_txrate_idx; + /* last tx rate_n_flags */ + u32 last_rate_n_flags; }; static void rs_rate_scale_perform(struct iwl_priv *priv, - struct net_device *dev, - struct ieee80211_hdr *hdr, - struct sta_info *sta); -static void rs_fill_link_cmd(const struct iwl_priv *priv, + struct sk_buff *skb, + struct ieee80211_sta *sta, + struct iwl_lq_sta *lq_sta); +static void rs_fill_link_cmd(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, u32 rate_n_flags); @@ -187,7 +195,7 @@ static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, * 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54, 60 MBits * "G" is the only table that supports CCK (the first 4 rates). */ -/*FIXME:RS:need to spearate tables for MIMO2/MIMO3*/ + static s32 expected_tpt_A[IWL_RATE_COUNT] = { 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186, 186 }; @@ -204,11 +212,11 @@ static s32 expected_tpt_siso20MHzSGI[IWL_RATE_COUNT] = { 0, 0, 0, 0, 46, 46, 82, 110, 132, 168, 192, 202, 211 }; -static s32 expected_tpt_mimo20MHz[IWL_RATE_COUNT] = { +static s32 expected_tpt_mimo2_20MHz[IWL_RATE_COUNT] = { 0, 0, 0, 0, 74, 74, 123, 155, 179, 214, 236, 244, 251 }; -static s32 expected_tpt_mimo20MHzSGI[IWL_RATE_COUNT] = { +static s32 expected_tpt_mimo2_20MHzSGI[IWL_RATE_COUNT] = { 0, 0, 0, 0, 81, 81, 131, 164, 188, 222, 243, 251, 257 }; @@ -220,14 +228,50 @@ static s32 expected_tpt_siso40MHzSGI[IWL_RATE_COUNT] = { 0, 0, 0, 0, 83, 83, 135, 169, 193, 229, 250, 257, 264 }; -static s32 expected_tpt_mimo40MHz[IWL_RATE_COUNT] = { +static s32 expected_tpt_mimo2_40MHz[IWL_RATE_COUNT] = { 0, 0, 0, 0, 123, 123, 182, 214, 235, 264, 279, 285, 289 }; -static s32 expected_tpt_mimo40MHzSGI[IWL_RATE_COUNT] = { +static s32 expected_tpt_mimo2_40MHzSGI[IWL_RATE_COUNT] = { 0, 0, 0, 0, 131, 131, 191, 222, 242, 270, 284, 289, 293 }; +/* Expected throughput metric MIMO3 */ +static s32 expected_tpt_mimo3_20MHz[IWL_RATE_COUNT] = { + 0, 0, 0, 0, 99, 99, 153, 186, 208, 239, 256, 263, 268 +}; + +static s32 expected_tpt_mimo3_20MHzSGI[IWL_RATE_COUNT] = { + 0, 0, 0, 0, 106, 106, 162, 194, 215, 246, 262, 268, 273 +}; + +static s32 expected_tpt_mimo3_40MHz[IWL_RATE_COUNT] = { + 0, 0, 0, 0, 152, 152, 211, 239, 255, 279, 290, 294, 297 +}; + +static s32 expected_tpt_mimo3_40MHzSGI[IWL_RATE_COUNT] = { + 0, 0, 0, 0, 160, 160, 219, 245, 261, 284, 294, 297, 300 +}; + +/* mbps, mcs */ +const static struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = { + {"1", ""}, + {"2", ""}, + {"5.5", ""}, + {"11", ""}, + {"6", "BPSK 1/2"}, + {"9", "BPSK 1/2"}, + {"12", "QPSK 1/2"}, + {"18", "QPSK 3/4"}, + {"24", "16QAM 1/2"}, + {"36", "16QAM 3/4"}, + {"48", "64QAM 2/3"}, + {"54", "64QAM 3/4"}, + {"60", "64QAM 5/6"} +}; + +#define MCS_INDEX_PER_STREAM (8) + static inline u8 rs_extract_rate(u32 rate_n_flags) { return (u8)(rate_n_flags & 0xFF); @@ -280,15 +324,17 @@ static u8 rs_tl_add_packet(struct iwl_lq_sta *lq_data, u32 time_diff; s32 index; struct iwl_traffic_load *tl = NULL; - __le16 fc = hdr->frame_control; u8 tid; - if (ieee80211_is_data_qos(fc)) { + if (ieee80211_is_data_qos(hdr->frame_control)) { u8 *qc = ieee80211_get_qos_ctl(hdr); tid = qc[0] & 0xf; } else return MAX_TID_COUNT; + if (unlikely(tid >= TID_MAX_LOAD_COUNT)) + return MAX_TID_COUNT; + tl = &lq_data->load[tid]; curr_time -= curr_time % TID_ROUND_VALUE; @@ -354,26 +400,18 @@ static u32 rs_tl_get_load(struct iwl_lq_sta *lq_data, u8 tid) static void rs_tl_turn_on_agg_for_tid(struct iwl_priv *priv, struct iwl_lq_sta *lq_data, u8 tid, - struct sta_info *sta) + struct ieee80211_sta *sta) { - unsigned long state; - DECLARE_MAC_BUF(mac); - - spin_lock_bh(&sta->lock); - state = sta->ampdu_mlme.tid_state_tx[tid]; - spin_unlock_bh(&sta->lock); - - if (state == HT_AGG_STATE_IDLE && - rs_tl_get_load(lq_data, tid) > IWL_AGG_LOAD_THRESHOLD) { - IWL_DEBUG_HT("Starting Tx agg: STA: %s tid: %d\n", - print_mac(mac, sta->addr), tid); + if (rs_tl_get_load(lq_data, tid) > IWL_AGG_LOAD_THRESHOLD) { + IWL_DEBUG_HT(priv, "Starting Tx agg: STA: %pM tid: %d\n", + sta->addr, tid); ieee80211_start_tx_ba_session(priv->hw, sta->addr, tid); } } static void rs_tl_turn_on_agg(struct iwl_priv *priv, u8 tid, struct iwl_lq_sta *lq_data, - struct sta_info *sta) + struct ieee80211_sta *sta) { if ((tid < TID_MAX_LOAD_COUNT)) rs_tl_turn_on_agg_for_tid(priv, lq_data, tid, sta); @@ -436,7 +474,7 @@ static int rs_collect_tx_data(struct iwl_rate_scale_data *windows, /* Shift bitmap by one frame (throw away oldest history), * OR in "1", and increment "success" if this * frame was successful. */ - window->data <<= 1;; + window->data <<= 1; if (successes > 0) { window->success_counter++; window->data |= 0x1; @@ -472,8 +510,9 @@ static int rs_collect_tx_data(struct iwl_rate_scale_data *windows, * Fill uCode API rate_n_flags field, based on "search" or "active" table. */ /* FIXME:RS:remove this function and put the flags statically in the table */ -static u32 rate_n_flags_from_tbl(struct iwl_scale_tbl_info *tbl, - int index, u8 use_green) +static u32 rate_n_flags_from_tbl(struct iwl_priv *priv, + struct iwl_scale_tbl_info *tbl, + int index, u8 use_green) { u32 rate_n_flags = 0; @@ -484,7 +523,7 @@ static u32 rate_n_flags_from_tbl(struct iwl_scale_tbl_info *tbl, } else if (is_Ht(tbl->lq_type)) { if (index > IWL_LAST_OFDM_RATE) { - IWL_ERROR("invalid HT rate index %d\n", index); + IWL_ERR(priv, "Invalid HT rate index %d\n", index); index = IWL_LAST_OFDM_RATE; } rate_n_flags = RATE_MCS_HT_MSK; @@ -496,18 +535,18 @@ static u32 rate_n_flags_from_tbl(struct iwl_scale_tbl_info *tbl, else rate_n_flags |= iwl_rates[index].plcp_mimo3; } else { - IWL_ERROR("Invalid tbl->lq_type %d\n", tbl->lq_type); + IWL_ERR(priv, "Invalid tbl->lq_type %d\n", tbl->lq_type); } rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) & RATE_MCS_ANT_ABC_MSK); if (is_Ht(tbl->lq_type)) { - if (tbl->is_fat) { + if (tbl->is_ht40) { if (tbl->is_dup) rate_n_flags |= RATE_MCS_DUP_MSK; else - rate_n_flags |= RATE_MCS_FAT_MSK; + rate_n_flags |= RATE_MCS_HT40_MSK; } if (tbl->is_SGI) rate_n_flags |= RATE_MCS_SGI_MSK; @@ -516,7 +555,7 @@ static u32 rate_n_flags_from_tbl(struct iwl_scale_tbl_info *tbl, rate_n_flags |= RATE_MCS_GF_MSK; if (is_siso(tbl->lq_type) && tbl->is_SGI) { rate_n_flags &= ~RATE_MCS_SGI_MSK; - IWL_ERROR("GF was set with SGI:SISO\n"); + IWL_ERR(priv, "GF was set with SGI:SISO\n"); } } } @@ -543,10 +582,11 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, return -EINVAL; } tbl->is_SGI = 0; /* default legacy setup */ - tbl->is_fat = 0; + tbl->is_ht40 = 0; tbl->is_dup = 0; tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS); tbl->lq_type = LQ_NONE; + tbl->max_search = IWL_MAX_SEARCH; /* legacy rate format */ if (!(rate_n_flags & RATE_MCS_HT_MSK)) { @@ -561,9 +601,9 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, if (rate_n_flags & RATE_MCS_SGI_MSK) tbl->is_SGI = 1; - if ((rate_n_flags & RATE_MCS_FAT_MSK) || + if ((rate_n_flags & RATE_MCS_HT40_MSK) || (rate_n_flags & RATE_MCS_DUP_MSK)) - tbl->is_fat = 1; + tbl->is_ht40 = 1; if (rate_n_flags & RATE_MCS_DUP_MSK) tbl->is_dup = 1; @@ -580,8 +620,10 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, tbl->lq_type = LQ_MIMO2; /* MIMO3 */ } else { - if (num_of_ant == 3) + if (num_of_ant == 3) { + tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH; tbl->lq_type = LQ_MIMO3; + } } } return 0; @@ -615,19 +657,15 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags, return 1; } -/* FIXME:RS: in 4965 we don't use greenfield at all */ -/* FIXME:RS: don't use greenfield for now in TX */ -#if 0 -static inline u8 rs_use_green(struct iwl_priv *priv, struct ieee80211_conf *conf) +/** + * Green-field mode is valid if the station supports it and + * there are no non-GF stations present in the BSS. + */ +static inline u8 rs_use_green(struct ieee80211_sta *sta, + struct iwl_ht_info *ht_conf) { - return (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) && - priv->current_ht_config.is_green_field && - !priv->current_ht_config.non_GF_STA_present; -} -#endif -static inline u8 rs_use_green(struct iwl_priv *priv, struct ieee80211_conf *conf) -{ - return 0; + return (sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) && + !(ht_conf->non_GF_STA_present); } /** @@ -697,7 +735,7 @@ static u16 rs_get_adjacent_rate(struct iwl_priv *priv, u8 index, u16 rate_mask, break; if (rate_mask & (1 << low)) break; - IWL_DEBUG_RATE("Skipping masked lower rate: %d\n", low); + IWL_DEBUG_RATE(priv, "Skipping masked lower rate: %d\n", low); } high = index; @@ -707,7 +745,7 @@ static u16 rs_get_adjacent_rate(struct iwl_priv *priv, u8 index, u16 rate_mask, break; if (rate_mask & (1 << high)) break; - IWL_DEBUG_RATE("Skipping masked higher rate: %d\n", high); + IWL_DEBUG_RATE(priv, "Skipping masked higher rate: %d\n", high); } return (high << 8) | low; @@ -722,6 +760,7 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, u16 high_low; u8 switch_to_legacy = 0; u8 is_green = lq_sta->is_green; + struct iwl_priv *priv = lq_sta->drv; /* check if we need to switch from HT to legacy rates. * assumption is that mandatory rates (1Mbps or 6Mbps) @@ -735,10 +774,12 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, tbl->lq_type = LQ_G; if (num_of_ant(tbl->ant_type) > 1) - tbl->ant_type = ANT_A;/*FIXME:RS*/ + tbl->ant_type = + first_antenna(priv->hw_params.valid_tx_ant); - tbl->is_fat = 0; + tbl->is_ht40 = 0; tbl->is_SGI = 0; + tbl->max_search = IWL_MAX_SEARCH; } rate_mask = rs_get_supported_rates(lq_sta, NULL, tbl->lq_type); @@ -767,38 +808,37 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, low = scale_index; out: - return rate_n_flags_from_tbl(tbl, low, is_green); + return rate_n_flags_from_tbl(lq_sta->drv, tbl, low, is_green); } /* * mac80211 sends us Tx status */ -static void rs_tx_status(void *priv_rate, struct net_device *dev, +static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband, + struct ieee80211_sta *sta, void *priv_sta, struct sk_buff *skb) { int status; u8 retries; - int rs_index, index = 0; - struct iwl_lq_sta *lq_sta; + int rs_index, mac_index, index = 0; + struct iwl_lq_sta *lq_sta = priv_sta; struct iwl_link_quality_cmd *table; - struct sta_info *sta; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct iwl_priv *priv = (struct iwl_priv *)priv_rate; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw *hw = local_to_hw(local); + struct iwl_priv *priv = (struct iwl_priv *)priv_r; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct iwl_rate_scale_data *window = NULL; struct iwl_rate_scale_data *search_win = NULL; + enum mac80211_rate_control_flags mac_flags; u32 tx_rate; struct iwl_scale_tbl_info tbl_type; struct iwl_scale_tbl_info *curr_tbl, *search_tbl; u8 active_index = 0; - __le16 fc = hdr->frame_control; s32 tpt = 0; - IWL_DEBUG_RATE_LIMIT("get frame ack response, update rate scale window\n"); + IWL_DEBUG_RATE_LIMIT(priv, "get frame ack response, update rate scale window\n"); - if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1)) + if (!ieee80211_is_data(hdr->frame_control) || + info->flags & IEEE80211_TX_CTL_NO_ACK) return; /* This packet was aggregated but doesn't carry rate scale info */ @@ -806,22 +846,15 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, !(info->flags & IEEE80211_TX_STAT_AMPDU)) return; - retries = info->status.retry_count; + if (info->flags & IEEE80211_TX_STAT_AMPDU) + retries = 0; + else + retries = info->status.rates[0].count - 1; if (retries > 15) retries = 15; - rcu_read_lock(); - - sta = sta_info_get(local, hdr->addr1); - - if (!sta || !sta->rate_ctrl_priv) - goto out; - - - lq_sta = (struct iwl_lq_sta *)sta->rate_ctrl_priv; - - if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && + if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) && !lq_sta->ibss_sta_added) goto out; @@ -845,25 +878,42 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index); if (priv->band == IEEE80211_BAND_5GHZ) rs_index -= IWL_FIRST_OFDM_RATE; + mac_flags = info->status.rates[0].flags; + mac_index = info->status.rates[0].idx; + /* For HT packets, map MCS to PLCP */ + if (mac_flags & IEEE80211_TX_RC_MCS) { + mac_index &= RATE_MCS_CODE_MSK; /* Remove # of streams */ + if (mac_index >= (IWL_RATE_9M_INDEX - IWL_FIRST_OFDM_RATE)) + mac_index++; + /* + * mac80211 HT index is always zero-indexed; we need to move + * HT OFDM rates after CCK rates in 2.4 GHz band + */ + if (priv->band == IEEE80211_BAND_2GHZ) + mac_index += IWL_FIRST_OFDM_RATE; + } - if ((info->tx_rate_idx < 0) || - (tbl_type.is_SGI ^ - !!(info->flags & IEEE80211_TX_CTL_SHORT_GI)) || - (tbl_type.is_fat ^ - !!(info->flags & IEEE80211_TX_CTL_40_MHZ_WIDTH)) || - (tbl_type.is_dup ^ - !!(info->flags & IEEE80211_TX_CTL_DUP_DATA)) || - (tbl_type.ant_type ^ info->antenna_sel_tx) || - (!!(tx_rate & RATE_MCS_HT_MSK) ^ - !!(info->flags & IEEE80211_TX_CTL_OFDM_HT)) || - (!!(tx_rate & RATE_MCS_GF_MSK) ^ - !!(info->flags & IEEE80211_TX_CTL_GREEN_FIELD)) || - (hw->wiphy->bands[priv->band]->bitrates[rs_index].bitrate != - hw->wiphy->bands[info->band]->bitrates[info->tx_rate_idx].bitrate)) { - IWL_DEBUG_RATE("initial rate does not match 0x%x\n", tx_rate); + if ((mac_index < 0) || + (tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) || + (tbl_type.is_ht40 != !!(mac_flags & IEEE80211_TX_RC_40_MHZ_WIDTH)) || + (tbl_type.is_dup != !!(mac_flags & IEEE80211_TX_RC_DUP_DATA)) || + (tbl_type.ant_type != info->antenna_sel_tx) || + (!!(tx_rate & RATE_MCS_HT_MSK) != !!(mac_flags & IEEE80211_TX_RC_MCS)) || + (!!(tx_rate & RATE_MCS_GF_MSK) != !!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD)) || + (rs_index != mac_index)) { + IWL_DEBUG_RATE(priv, "initial rate %d does not match %d (0x%x)\n", mac_index, rs_index, tx_rate); + /* the last LQ command could failed so the LQ in ucode not + * the same in driver sync up + */ + lq_sta->missed_rate_counter++; + if (lq_sta->missed_rate_counter > IWL_MISSED_RATE_MAX) { + lq_sta->missed_rate_counter = 0; + iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); + } goto out; } + lq_sta->missed_rate_counter = 0; /* Update frame history window with "failure" for each Tx retry. */ while (retries) { /* Look up the rate and other info used for each tx attempt. @@ -910,6 +960,7 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, * else look up the rate that was, finally, successful. */ tx_rate = le32_to_cpu(table->rs_table[index].rate_n_flags); + lq_sta->last_rate_n_flags = tx_rate; rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index); /* Update frame history window with "success" if Tx got ACKed ... */ @@ -924,7 +975,7 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, tpt = search_tbl->expected_tpt[rs_index]; else tpt = 0; - if (info->flags & IEEE80211_TX_CTL_AMPDU) + if (info->flags & IEEE80211_TX_STAT_AMPDU) rs_collect_tx_data(search_win, rs_index, tpt, info->status.ampdu_ack_len, info->status.ampdu_ack_map); @@ -940,7 +991,7 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, tpt = curr_tbl->expected_tpt[rs_index]; else tpt = 0; - if (info->flags & IEEE80211_TX_CTL_AMPDU) + if (info->flags & IEEE80211_TX_STAT_AMPDU) rs_collect_tx_data(window, rs_index, tpt, info->status.ampdu_ack_len, info->status.ampdu_ack_map); @@ -952,7 +1003,7 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, /* If not searching for new mode, increment success/failed counter * ... these help determine when to start searching again */ if (lq_sta->stay_in_tbl) { - if (info->flags & IEEE80211_TX_CTL_AMPDU) { + if (info->flags & IEEE80211_TX_STAT_AMPDU) { lq_sta->total_success += info->status.ampdu_ack_map; lq_sta->total_failed += (info->status.ampdu_ack_len - info->status.ampdu_ack_map); @@ -965,9 +1016,9 @@ static void rs_tx_status(void *priv_rate, struct net_device *dev, } /* See if there's a better rate or modulation mode to try. */ - rs_rate_scale_perform(priv, dev, hdr, sta); + if (sta && sta->supp_rates[sband->band]) + rs_rate_scale_perform(priv, skb, sta, lq_sta); out: - rcu_read_unlock(); return; } @@ -982,7 +1033,7 @@ out: static void rs_set_stay_in_table(struct iwl_priv *priv, u8 is_legacy, struct iwl_lq_sta *lq_sta) { - IWL_DEBUG_RATE("we are staying in the same table\n"); + IWL_DEBUG_RATE(priv, "we are staying in the same table\n"); lq_sta->stay_in_tbl = 1; /* only place this gets set */ if (is_legacy) { lq_sta->table_count_limit = IWL_LEGACY_TABLE_COUNT; @@ -996,6 +1047,8 @@ static void rs_set_stay_in_table(struct iwl_priv *priv, u8 is_legacy, lq_sta->table_count = 0; lq_sta->total_failed = 0; lq_sta->total_success = 0; + lq_sta->flush_timer = jiffies; + lq_sta->action_counter = 0; } /* @@ -1010,7 +1063,7 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, else tbl->expected_tpt = expected_tpt_A; } else if (is_siso(tbl->lq_type)) { - if (tbl->is_fat && !lq_sta->is_dup) + if (tbl->is_ht40 && !lq_sta->is_dup) if (tbl->is_SGI) tbl->expected_tpt = expected_tpt_siso40MHzSGI; else @@ -1019,17 +1072,26 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, tbl->expected_tpt = expected_tpt_siso20MHzSGI; else tbl->expected_tpt = expected_tpt_siso20MHz; - - } else if (is_mimo(tbl->lq_type)) { /* FIXME:need to separate mimo2/3 */ - if (tbl->is_fat && !lq_sta->is_dup) + } else if (is_mimo2(tbl->lq_type)) { + if (tbl->is_ht40 && !lq_sta->is_dup) if (tbl->is_SGI) - tbl->expected_tpt = expected_tpt_mimo40MHzSGI; + tbl->expected_tpt = expected_tpt_mimo2_40MHzSGI; else - tbl->expected_tpt = expected_tpt_mimo40MHz; + tbl->expected_tpt = expected_tpt_mimo2_40MHz; else if (tbl->is_SGI) - tbl->expected_tpt = expected_tpt_mimo20MHzSGI; + tbl->expected_tpt = expected_tpt_mimo2_20MHzSGI; else - tbl->expected_tpt = expected_tpt_mimo20MHz; + tbl->expected_tpt = expected_tpt_mimo2_20MHz; + } else if (is_mimo3(tbl->lq_type)) { + if (tbl->is_ht40 && !lq_sta->is_dup) + if (tbl->is_SGI) + tbl->expected_tpt = expected_tpt_mimo3_40MHzSGI; + else + tbl->expected_tpt = expected_tpt_mimo3_40MHz; + else if (tbl->is_SGI) + tbl->expected_tpt = expected_tpt_mimo3_20MHzSGI; + else + tbl->expected_tpt = expected_tpt_mimo3_20MHz; } else tbl->expected_tpt = expected_tpt_G; } @@ -1128,6 +1190,7 @@ static s32 rs_get_best_rate(struct iwl_priv *priv, /* Higher rate not available, use the original */ } else { + new_rate = rate; break; } } @@ -1137,68 +1200,110 @@ static s32 rs_get_best_rate(struct iwl_priv *priv, } /* - * Set up search table for MIMO + * Set up search table for MIMO2 */ static int rs_switch_to_mimo2(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, struct ieee80211_conf *conf, - struct sta_info *sta, + struct ieee80211_sta *sta, struct iwl_scale_tbl_info *tbl, int index) { u16 rate_mask; s32 rate; s8 is_green = lq_sta->is_green; - if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) || - !sta->ht_info.ht_supported) + if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) return -1; - if (priv->current_ht_config.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC) + if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2) + == WLAN_HT_CAP_SM_PS_STATIC) return -1; /* Need both Tx chains/antennas to support MIMO */ if (priv->hw_params.tx_chains_num < 2) return -1; - IWL_DEBUG_RATE("LQ: try to switch to MIMO2\n"); + IWL_DEBUG_RATE(priv, "LQ: try to switch to MIMO2\n"); tbl->lq_type = LQ_MIMO2; tbl->is_dup = lq_sta->is_dup; tbl->action = 0; + tbl->max_search = IWL_MAX_SEARCH; rate_mask = lq_sta->active_mimo2_rate; - if (priv->current_ht_config.supported_chan_width - == IWL_CHANNEL_WIDTH_40MHZ) - tbl->is_fat = 1; + if (iwl_is_ht40_tx_allowed(priv, &sta->ht_cap)) + tbl->is_ht40 = 1; else - tbl->is_fat = 0; + tbl->is_ht40 = 0; - /* FIXME: - don't toggle SGI here - if (tbl->is_fat) { - if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY) - tbl->is_SGI = 1; - else - tbl->is_SGI = 0; - } else if (priv->current_ht_config.sgf & HT_SHORT_GI_20MHZ_ONLY) - tbl->is_SGI = 1; + rs_set_expected_tpt_table(lq_sta, tbl); + + rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index); + + IWL_DEBUG_RATE(priv, "LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask); + if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { + IWL_DEBUG_RATE(priv, "Can't switch with index %d rate mask %x\n", + rate, rate_mask); + return -1; + } + tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green); + + IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n", + tbl->current_rate, is_green); + return 0; +} + +/* + * Set up search table for MIMO3 + */ +static int rs_switch_to_mimo3(struct iwl_priv *priv, + struct iwl_lq_sta *lq_sta, + struct ieee80211_conf *conf, + struct ieee80211_sta *sta, + struct iwl_scale_tbl_info *tbl, int index) +{ + u16 rate_mask; + s32 rate; + s8 is_green = lq_sta->is_green; + + if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) + return -1; + + if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2) + == WLAN_HT_CAP_SM_PS_STATIC) + return -1; + + /* Need both Tx chains/antennas to support MIMO */ + if (priv->hw_params.tx_chains_num < 3) + return -1; + + IWL_DEBUG_RATE(priv, "LQ: try to switch to MIMO3\n"); + + tbl->lq_type = LQ_MIMO3; + tbl->is_dup = lq_sta->is_dup; + tbl->action = 0; + tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH; + rate_mask = lq_sta->active_mimo3_rate; + + if (iwl_is_ht40_tx_allowed(priv, &sta->ht_cap)) + tbl->is_ht40 = 1; else - tbl->is_SGI = 0; - */ + tbl->is_ht40 = 0; rs_set_expected_tpt_table(lq_sta, tbl); rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index); - IWL_DEBUG_RATE("LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask); - + IWL_DEBUG_RATE(priv, "LQ: MIMO3 best rate %d mask %X\n", + rate, rate_mask); if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { - IWL_DEBUG_RATE("Can't switch with index %d rate mask %x\n", + IWL_DEBUG_RATE(priv, "Can't switch with index %d rate mask %x\n", rate, rate_mask); return -1; } - tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green); + tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green); - IWL_DEBUG_RATE("LQ: Switch to new mcs %X index is green %X\n", + IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n", tbl->current_rate, is_green); return 0; } @@ -1209,41 +1314,28 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv, static int rs_switch_to_siso(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, struct ieee80211_conf *conf, - struct sta_info *sta, + struct ieee80211_sta *sta, struct iwl_scale_tbl_info *tbl, int index) { u16 rate_mask; u8 is_green = lq_sta->is_green; s32 rate; - if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) || - !sta->ht_info.ht_supported) + if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) return -1; - IWL_DEBUG_RATE("LQ: try to switch to SISO\n"); + IWL_DEBUG_RATE(priv, "LQ: try to switch to SISO\n"); tbl->is_dup = lq_sta->is_dup; tbl->lq_type = LQ_SISO; tbl->action = 0; + tbl->max_search = IWL_MAX_SEARCH; rate_mask = lq_sta->active_siso_rate; - if (priv->current_ht_config.supported_chan_width - == IWL_CHANNEL_WIDTH_40MHZ) - tbl->is_fat = 1; + if (iwl_is_ht40_tx_allowed(priv, &sta->ht_cap)) + tbl->is_ht40 = 1; else - tbl->is_fat = 0; - - /* FIXME: - don't toggle SGI here - if (tbl->is_fat) { - if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY) - tbl->is_SGI = 1; - else - tbl->is_SGI = 0; - } else if (priv->current_ht_config.sgf & HT_SHORT_GI_20MHZ_ONLY) - tbl->is_SGI = 1; - else - tbl->is_SGI = 0; - */ + tbl->is_ht40 = 0; if (is_green) tbl->is_SGI = 0; /*11n spec: no SGI in SISO+Greenfield*/ @@ -1251,14 +1343,14 @@ static int rs_switch_to_siso(struct iwl_priv *priv, rs_set_expected_tpt_table(lq_sta, tbl); rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index); - IWL_DEBUG_RATE("LQ: get best rate %d mask %X\n", rate, rate_mask); + IWL_DEBUG_RATE(priv, "LQ: get best rate %d mask %X\n", rate, rate_mask); if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { - IWL_DEBUG_RATE("can not switch with index %d rate mask %x\n", + IWL_DEBUG_RATE(priv, "can not switch with index %d rate mask %x\n", rate, rate_mask); return -1; } - tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green); - IWL_DEBUG_RATE("LQ: Switch to new mcs %X index is green %X\n", + tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green); + IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n", tbl->current_rate, is_green); return 0; } @@ -1269,7 +1361,7 @@ static int rs_switch_to_siso(struct iwl_priv *priv, static int rs_move_legacy_other(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, struct ieee80211_conf *conf, - struct sta_info *sta, + struct ieee80211_sta *sta, int index) { struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); @@ -1280,14 +1372,28 @@ static int rs_move_legacy_other(struct iwl_priv *priv, (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); u8 start_action = tbl->action; u8 valid_tx_ant = priv->hw_params.valid_tx_ant; + u8 tx_chains_num = priv->hw_params.tx_chains_num; int ret = 0; - + u8 update_search_tbl_counter = 0; + + if (!iwl_ht_enabled(priv)) + /* stay in Legacy */ + tbl->action = IWL_LEGACY_SWITCH_ANTENNA1; + else if (iwl_tx_ant_restriction(priv) == IWL_ANT_OK_SINGLE && + tbl->action > IWL_LEGACY_SWITCH_SISO) + tbl->action = IWL_LEGACY_SWITCH_SISO; for (; ;) { + lq_sta->action_counter++; switch (tbl->action) { - case IWL_LEGACY_SWITCH_ANTENNA: - IWL_DEBUG_RATE("LQ: Legacy toggle Antenna\n"); - - lq_sta->action_counter++; + case IWL_LEGACY_SWITCH_ANTENNA1: + case IWL_LEGACY_SWITCH_ANTENNA2: + IWL_DEBUG_RATE(priv, "LQ: Legacy toggle Antenna\n"); + + if ((tbl->action == IWL_LEGACY_SWITCH_ANTENNA1 && + tx_chains_num <= 1) || + (tbl->action == IWL_LEGACY_SWITCH_ANTENNA2 && + tx_chains_num <= 2)) + break; /* Don't change antenna if success has been great */ if (window->success_ratio >= IWL_RS_GOOD_RATIO) @@ -1298,12 +1404,13 @@ static int rs_move_legacy_other(struct iwl_priv *priv, if (rs_toggle_antenna(valid_tx_ant, &search_tbl->current_rate, search_tbl)) { - lq_sta->search_better_tbl = 1; + update_search_tbl_counter = 1; + rs_set_expected_tpt_table(lq_sta, search_tbl); goto out; } break; case IWL_LEGACY_SWITCH_SISO: - IWL_DEBUG_RATE("LQ: Legacy switch to SISO\n"); + IWL_DEBUG_RATE(priv, "LQ: Legacy switch to SISO\n"); /* Set up search table to try SISO */ memcpy(search_tbl, tbl, sz); @@ -1311,43 +1418,76 @@ static int rs_move_legacy_other(struct iwl_priv *priv, ret = rs_switch_to_siso(priv, lq_sta, conf, sta, search_tbl, index); if (!ret) { - lq_sta->search_better_tbl = 1; lq_sta->action_counter = 0; goto out; } break; - case IWL_LEGACY_SWITCH_MIMO2: - IWL_DEBUG_RATE("LQ: Legacy switch to MIMO2\n"); + case IWL_LEGACY_SWITCH_MIMO2_AB: + case IWL_LEGACY_SWITCH_MIMO2_AC: + case IWL_LEGACY_SWITCH_MIMO2_BC: + IWL_DEBUG_RATE(priv, "LQ: Legacy switch to MIMO2\n"); /* Set up search table to try MIMO */ memcpy(search_tbl, tbl, sz); search_tbl->is_SGI = 0; - search_tbl->ant_type = ANT_AB;/*FIXME:RS*/ - /*FIXME:RS:need to check ant validity*/ + + if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AB) + search_tbl->ant_type = ANT_AB; + else if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AC) + search_tbl->ant_type = ANT_AC; + else + search_tbl->ant_type = ANT_BC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta, search_tbl, index); if (!ret) { - lq_sta->search_better_tbl = 1; + lq_sta->action_counter = 0; + goto out; + } + break; + + case IWL_LEGACY_SWITCH_MIMO3_ABC: + IWL_DEBUG_RATE(priv, "LQ: Legacy switch to MIMO3\n"); + + /* Set up search table to try MIMO3 */ + memcpy(search_tbl, tbl, sz); + search_tbl->is_SGI = 0; + + search_tbl->ant_type = ANT_ABC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + + ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta, + search_tbl, index); + if (!ret) { lq_sta->action_counter = 0; goto out; } break; } tbl->action++; - if (tbl->action > IWL_LEGACY_SWITCH_MIMO2) - tbl->action = IWL_LEGACY_SWITCH_ANTENNA; + if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + tbl->action = IWL_LEGACY_SWITCH_ANTENNA1; if (tbl->action == start_action) break; } + search_tbl->lq_type = LQ_NONE; return 0; - out: +out: + lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_LEGACY_SWITCH_MIMO2) - tbl->action = IWL_LEGACY_SWITCH_ANTENNA; + if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + tbl->action = IWL_LEGACY_SWITCH_ANTENNA1; + if (update_search_tbl_counter) + search_tbl->action = tbl->action; return 0; } @@ -1358,64 +1498,89 @@ static int rs_move_legacy_other(struct iwl_priv *priv, static int rs_move_siso_to_other(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, struct ieee80211_conf *conf, - struct sta_info *sta, int index) + struct ieee80211_sta *sta, int index) { u8 is_green = lq_sta->is_green; struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); struct iwl_scale_tbl_info *search_tbl = &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); struct iwl_rate_scale_data *window = &(tbl->win[index]); + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; u32 sz = (sizeof(struct iwl_scale_tbl_info) - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); u8 start_action = tbl->action; u8 valid_tx_ant = priv->hw_params.valid_tx_ant; + u8 tx_chains_num = priv->hw_params.tx_chains_num; + u8 update_search_tbl_counter = 0; int ret; + if (iwl_tx_ant_restriction(priv) == IWL_ANT_OK_SINGLE && + tbl->action > IWL_SISO_SWITCH_ANTENNA2) { + /* stay in SISO */ + tbl->action = IWL_SISO_SWITCH_ANTENNA1; + } for (;;) { lq_sta->action_counter++; switch (tbl->action) { - case IWL_SISO_SWITCH_ANTENNA: - IWL_DEBUG_RATE("LQ: SISO toggle Antenna\n"); + case IWL_SISO_SWITCH_ANTENNA1: + case IWL_SISO_SWITCH_ANTENNA2: + IWL_DEBUG_RATE(priv, "LQ: SISO toggle Antenna\n"); + + if ((tbl->action == IWL_SISO_SWITCH_ANTENNA1 && + tx_chains_num <= 1) || + (tbl->action == IWL_SISO_SWITCH_ANTENNA2 && + tx_chains_num <= 2)) + break; + if (window->success_ratio >= IWL_RS_GOOD_RATIO) break; memcpy(search_tbl, tbl, sz); if (rs_toggle_antenna(valid_tx_ant, &search_tbl->current_rate, search_tbl)) { - lq_sta->search_better_tbl = 1; + update_search_tbl_counter = 1; goto out; } break; - case IWL_SISO_SWITCH_MIMO2: - IWL_DEBUG_RATE("LQ: SISO switch to MIMO2\n"); + case IWL_SISO_SWITCH_MIMO2_AB: + case IWL_SISO_SWITCH_MIMO2_AC: + case IWL_SISO_SWITCH_MIMO2_BC: + IWL_DEBUG_RATE(priv, "LQ: SISO switch to MIMO2\n"); memcpy(search_tbl, tbl, sz); search_tbl->is_SGI = 0; - search_tbl->ant_type = ANT_AB; /*FIXME:RS*/ + + if (tbl->action == IWL_SISO_SWITCH_MIMO2_AB) + search_tbl->ant_type = ANT_AB; + else if (tbl->action == IWL_SISO_SWITCH_MIMO2_AC) + search_tbl->ant_type = ANT_AC; + else + search_tbl->ant_type = ANT_BC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta, search_tbl, index); - if (!ret) { - lq_sta->search_better_tbl = 1; + if (!ret) goto out; - } break; case IWL_SISO_SWITCH_GI: - if (!tbl->is_fat && - !(priv->current_ht_config.sgf & - HT_SHORT_GI_20MHZ)) + if (!tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_20)) break; - if (tbl->is_fat && - !(priv->current_ht_config.sgf & - HT_SHORT_GI_40MHZ)) + if (tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_40)) break; - IWL_DEBUG_RATE("LQ: SISO toggle SGI/NGI\n"); + IWL_DEBUG_RATE(priv, "LQ: SISO toggle SGI/NGI\n"); memcpy(search_tbl, tbl, sz); if (is_green) { if (!tbl->is_SGI) break; else - IWL_ERROR("SGI was set in GF+SISO\n"); + IWL_ERR(priv, + "SGI was set in GF+SISO\n"); } search_tbl->is_SGI = !tbl->is_SGI; rs_set_expected_tpt_table(lq_sta, search_tbl); @@ -1424,82 +1589,131 @@ static int rs_move_siso_to_other(struct iwl_priv *priv, if (tpt >= search_tbl->expected_tpt[index]) break; } - search_tbl->current_rate = rate_n_flags_from_tbl( - search_tbl, index, is_green); - lq_sta->search_better_tbl = 1; + search_tbl->current_rate = + rate_n_flags_from_tbl(priv, search_tbl, + index, is_green); + update_search_tbl_counter = 1; goto out; + case IWL_SISO_SWITCH_MIMO3_ABC: + IWL_DEBUG_RATE(priv, "LQ: SISO switch to MIMO3\n"); + memcpy(search_tbl, tbl, sz); + search_tbl->is_SGI = 0; + search_tbl->ant_type = ANT_ABC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + + ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta, + search_tbl, index); + if (!ret) + goto out; + break; } tbl->action++; - if (tbl->action > IWL_SISO_SWITCH_GI) - tbl->action = IWL_SISO_SWITCH_ANTENNA; + if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC) + tbl->action = IWL_SISO_SWITCH_ANTENNA1; if (tbl->action == start_action) break; } + search_tbl->lq_type = LQ_NONE; return 0; out: + lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_SISO_SWITCH_GI) - tbl->action = IWL_SISO_SWITCH_ANTENNA; + if (tbl->action > IWL_SISO_SWITCH_MIMO3_ABC) + tbl->action = IWL_SISO_SWITCH_ANTENNA1; + if (update_search_tbl_counter) + search_tbl->action = tbl->action; + return 0; } /* - * Try to switch to new modulation mode from MIMO + * Try to switch to new modulation mode from MIMO2 */ -static int rs_move_mimo_to_other(struct iwl_priv *priv, +static int rs_move_mimo2_to_other(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, struct ieee80211_conf *conf, - struct sta_info *sta, int index) + struct ieee80211_sta *sta, int index) { s8 is_green = lq_sta->is_green; struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); struct iwl_scale_tbl_info *search_tbl = &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); + struct iwl_rate_scale_data *window = &(tbl->win[index]); + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; u32 sz = (sizeof(struct iwl_scale_tbl_info) - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); u8 start_action = tbl->action; - /*u8 valid_tx_ant = priv->hw_params.valid_tx_ant;*/ + u8 valid_tx_ant = priv->hw_params.valid_tx_ant; + u8 tx_chains_num = priv->hw_params.tx_chains_num; + u8 update_search_tbl_counter = 0; int ret; + if ((iwl_tx_ant_restriction(priv) == IWL_ANT_OK_SINGLE) && + (tbl->action < IWL_MIMO2_SWITCH_SISO_A || + tbl->action > IWL_MIMO2_SWITCH_SISO_C)) { + /* switch in SISO */ + tbl->action = IWL_MIMO2_SWITCH_SISO_A; + } for (;;) { lq_sta->action_counter++; switch (tbl->action) { - case IWL_MIMO_SWITCH_ANTENNA_A: - case IWL_MIMO_SWITCH_ANTENNA_B: - IWL_DEBUG_RATE("LQ: MIMO2 switch to SISO\n"); + case IWL_MIMO2_SWITCH_ANTENNA1: + case IWL_MIMO2_SWITCH_ANTENNA2: + IWL_DEBUG_RATE(priv, "LQ: MIMO2 toggle Antennas\n"); + + if (tx_chains_num <= 2) + break; + + if (window->success_ratio >= IWL_RS_GOOD_RATIO) + break; + + memcpy(search_tbl, tbl, sz); + if (rs_toggle_antenna(valid_tx_ant, + &search_tbl->current_rate, search_tbl)) { + update_search_tbl_counter = 1; + goto out; + } + break; + case IWL_MIMO2_SWITCH_SISO_A: + case IWL_MIMO2_SWITCH_SISO_B: + case IWL_MIMO2_SWITCH_SISO_C: + IWL_DEBUG_RATE(priv, "LQ: MIMO2 switch to SISO\n"); /* Set up new search table for SISO */ memcpy(search_tbl, tbl, sz); - /*FIXME:RS:need to check ant validity + C*/ - if (tbl->action == IWL_MIMO_SWITCH_ANTENNA_A) + if (tbl->action == IWL_MIMO2_SWITCH_SISO_A) search_tbl->ant_type = ANT_A; - else + else if (tbl->action == IWL_MIMO2_SWITCH_SISO_B) search_tbl->ant_type = ANT_B; + else + search_tbl->ant_type = ANT_C; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; ret = rs_switch_to_siso(priv, lq_sta, conf, sta, search_tbl, index); - if (!ret) { - lq_sta->search_better_tbl = 1; + if (!ret) goto out; - } + break; - case IWL_MIMO_SWITCH_GI: - if (!tbl->is_fat && - !(priv->current_ht_config.sgf & - HT_SHORT_GI_20MHZ)) + case IWL_MIMO2_SWITCH_GI: + if (!tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_20)) break; - if (tbl->is_fat && - !(priv->current_ht_config.sgf & - HT_SHORT_GI_40MHZ)) + if (tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_40)) break; - IWL_DEBUG_RATE("LQ: MIMO toggle SGI/NGI\n"); + IWL_DEBUG_RATE(priv, "LQ: MIMO2 toggle SGI/NGI\n"); - /* Set up new search table for MIMO */ + /* Set up new search table for MIMO2 */ memcpy(search_tbl, tbl, sz); search_tbl->is_SGI = !tbl->is_SGI; rs_set_expected_tpt_table(lq_sta, search_tbl); @@ -1514,25 +1728,192 @@ static int rs_move_mimo_to_other(struct iwl_priv *priv, if (tpt >= search_tbl->expected_tpt[index]) break; } - search_tbl->current_rate = rate_n_flags_from_tbl( - search_tbl, index, is_green); - lq_sta->search_better_tbl = 1; + search_tbl->current_rate = + rate_n_flags_from_tbl(priv, search_tbl, + index, is_green); + update_search_tbl_counter = 1; goto out; + case IWL_MIMO2_SWITCH_MIMO3_ABC: + IWL_DEBUG_RATE(priv, "LQ: MIMO2 switch to MIMO3\n"); + memcpy(search_tbl, tbl, sz); + search_tbl->is_SGI = 0; + search_tbl->ant_type = ANT_ABC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + + ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta, + search_tbl, index); + if (!ret) + goto out; + + break; } tbl->action++; - if (tbl->action > IWL_MIMO_SWITCH_GI) - tbl->action = IWL_MIMO_SWITCH_ANTENNA_A; + if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC) + tbl->action = IWL_MIMO2_SWITCH_ANTENNA1; if (tbl->action == start_action) break; } + search_tbl->lq_type = LQ_NONE; + return 0; + out: + lq_sta->search_better_tbl = 1; + tbl->action++; + if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC) + tbl->action = IWL_MIMO2_SWITCH_ANTENNA1; + if (update_search_tbl_counter) + search_tbl->action = tbl->action; return 0; + +} + +/* + * Try to switch to new modulation mode from MIMO3 + */ +static int rs_move_mimo3_to_other(struct iwl_priv *priv, + struct iwl_lq_sta *lq_sta, + struct ieee80211_conf *conf, + struct ieee80211_sta *sta, int index) +{ + s8 is_green = lq_sta->is_green; + struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); + struct iwl_scale_tbl_info *search_tbl = + &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); + struct iwl_rate_scale_data *window = &(tbl->win[index]); + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + u32 sz = (sizeof(struct iwl_scale_tbl_info) - + (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); + u8 start_action = tbl->action; + u8 valid_tx_ant = priv->hw_params.valid_tx_ant; + u8 tx_chains_num = priv->hw_params.tx_chains_num; + int ret; + u8 update_search_tbl_counter = 0; + + if ((iwl_tx_ant_restriction(priv) == IWL_ANT_OK_SINGLE) && + (tbl->action < IWL_MIMO3_SWITCH_SISO_A || + tbl->action > IWL_MIMO3_SWITCH_SISO_C)) { + /* switch in SISO */ + tbl->action = IWL_MIMO3_SWITCH_SISO_A; + } + for (;;) { + lq_sta->action_counter++; + switch (tbl->action) { + case IWL_MIMO3_SWITCH_ANTENNA1: + case IWL_MIMO3_SWITCH_ANTENNA2: + IWL_DEBUG_RATE(priv, "LQ: MIMO3 toggle Antennas\n"); + + if (tx_chains_num <= 3) + break; + + if (window->success_ratio >= IWL_RS_GOOD_RATIO) + break; + + memcpy(search_tbl, tbl, sz); + if (rs_toggle_antenna(valid_tx_ant, + &search_tbl->current_rate, search_tbl)) + goto out; + break; + case IWL_MIMO3_SWITCH_SISO_A: + case IWL_MIMO3_SWITCH_SISO_B: + case IWL_MIMO3_SWITCH_SISO_C: + IWL_DEBUG_RATE(priv, "LQ: MIMO3 switch to SISO\n"); + + /* Set up new search table for SISO */ + memcpy(search_tbl, tbl, sz); + + if (tbl->action == IWL_MIMO3_SWITCH_SISO_A) + search_tbl->ant_type = ANT_A; + else if (tbl->action == IWL_MIMO3_SWITCH_SISO_B) + search_tbl->ant_type = ANT_B; + else + search_tbl->ant_type = ANT_C; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + + ret = rs_switch_to_siso(priv, lq_sta, conf, sta, + search_tbl, index); + if (!ret) + goto out; + + break; + + case IWL_MIMO3_SWITCH_MIMO2_AB: + case IWL_MIMO3_SWITCH_MIMO2_AC: + case IWL_MIMO3_SWITCH_MIMO2_BC: + IWL_DEBUG_RATE(priv, "LQ: MIMO3 switch to MIMO2\n"); + + memcpy(search_tbl, tbl, sz); + search_tbl->is_SGI = 0; + if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AB) + search_tbl->ant_type = ANT_AB; + else if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AC) + search_tbl->ant_type = ANT_AC; + else + search_tbl->ant_type = ANT_BC; + + if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type)) + break; + + ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta, + search_tbl, index); + if (!ret) + goto out; + + break; + + case IWL_MIMO3_SWITCH_GI: + if (!tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_20)) + break; + if (tbl->is_ht40 && !(ht_cap->cap & + IEEE80211_HT_CAP_SGI_40)) + break; + + IWL_DEBUG_RATE(priv, "LQ: MIMO3 toggle SGI/NGI\n"); + + /* Set up new search table for MIMO */ + memcpy(search_tbl, tbl, sz); + search_tbl->is_SGI = !tbl->is_SGI; + rs_set_expected_tpt_table(lq_sta, search_tbl); + /* + * If active table already uses the fastest possible + * modulation (dual stream with short guard interval), + * and it's working well, there's no need to look + * for a better type of modulation! + */ + if (tbl->is_SGI) { + s32 tpt = lq_sta->last_tpt / 100; + if (tpt >= search_tbl->expected_tpt[index]) + break; + } + search_tbl->current_rate = + rate_n_flags_from_tbl(priv, search_tbl, + index, is_green); + update_search_tbl_counter = 1; + goto out; + } + tbl->action++; + if (tbl->action > IWL_MIMO3_SWITCH_GI) + tbl->action = IWL_MIMO3_SWITCH_ANTENNA1; + + if (tbl->action == start_action) + break; + } + search_tbl->lq_type = LQ_NONE; + return 0; out: + lq_sta->search_better_tbl = 1; tbl->action++; - if (tbl->action > IWL_MIMO_SWITCH_GI) - tbl->action = IWL_MIMO_SWITCH_ANTENNA_A; + if (tbl->action > IWL_MIMO3_SWITCH_GI) + tbl->action = IWL_MIMO3_SWITCH_ANTENNA1; + if (update_search_tbl_counter) + search_tbl->action = tbl->action; + return 0; } @@ -1563,8 +1944,8 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta) /* Elapsed time using current modulation mode */ if (lq_sta->flush_timer) flush_interval_passed = - time_after(jiffies, - (unsigned long)(lq_sta->flush_timer + + time_after(jiffies, + (unsigned long)(lq_sta->flush_timer + IWL_RATE_SCALE_FLUSH_INTVL)); /* @@ -1579,7 +1960,7 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta) (lq_sta->total_success > lq_sta->max_success_limit) || ((!lq_sta->search_better_tbl) && (lq_sta->flush_timer) && (flush_interval_passed))) { - IWL_DEBUG_RATE("LQ: stay is expired %d %d %d\n:", + IWL_DEBUG_RATE(priv, "LQ: stay is expired %d %d %d\n:", lq_sta->total_failed, lq_sta->total_success, flush_interval_passed); @@ -1602,7 +1983,7 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta) lq_sta->table_count_limit) { lq_sta->table_count = 0; - IWL_DEBUG_RATE("LQ: stay in table clear win\n"); + IWL_DEBUG_RATE(priv, "LQ: stay in table clear win\n"); for (i = 0; i < IWL_RATE_COUNT; i++) rs_rate_scale_clear_window( &(tbl->win[i])); @@ -1620,16 +2001,36 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta) } /* + * setup rate table in uCode + * return rate_n_flags as used in the table + */ +static u32 rs_update_rate_tbl(struct iwl_priv *priv, + struct iwl_lq_sta *lq_sta, + struct iwl_scale_tbl_info *tbl, + int index, u8 is_green) +{ + u32 rate; + + /* Update uCode's rate table. */ + rate = rate_n_flags_from_tbl(priv, tbl, index, is_green); + rs_fill_link_cmd(priv, lq_sta, rate); + iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); + + return rate; +} + +/* * Do rate scaling and search for new modulation mode. */ static void rs_rate_scale_perform(struct iwl_priv *priv, - struct net_device *dev, - struct ieee80211_hdr *hdr, - struct sta_info *sta) + struct sk_buff *skb, + struct ieee80211_sta *sta, + struct iwl_lq_sta *lq_sta) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw *hw = local_to_hw(local); + struct ieee80211_hw *hw = priv->hw; struct ieee80211_conf *conf = &hw->conf; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; int low = IWL_RATE_INVALID; int high = IWL_RATE_INVALID; int index; @@ -1640,10 +2041,8 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, int high_tpt = IWL_INVALID_VALUE; u32 fail_count; s8 scale_action = 0; - __le16 fc; u16 rate_mask; u8 update_lq = 0; - struct iwl_lq_sta *lq_sta; struct iwl_scale_tbl_info *tbl, *tbl1; u16 rate_scale_index_msk = 0; u32 rate; @@ -1653,21 +2052,20 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, u16 high_low; s32 sr; u8 tid = MAX_TID_COUNT; + struct iwl_tid_data *tid_data; - IWL_DEBUG_RATE("rate scale calculate new rate for skb\n"); + IWL_DEBUG_RATE(priv, "rate scale calculate new rate for skb\n"); - fc = hdr->frame_control; - if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1)) { - /* Send management frames and broadcast/multicast data using - * lowest rate. */ - /* TODO: this could probably be improved.. */ + /* Send management frames and NO_ACK data using lowest rate. */ + /* TODO: this could probably be improved.. */ + if (!ieee80211_is_data(hdr->frame_control) || + info->flags & IEEE80211_TX_CTL_NO_ACK) return; - } - if (!sta || !sta->rate_ctrl_priv) + if (!sta || !lq_sta) return; - lq_sta = (struct iwl_lq_sta *)sta->rate_ctrl_priv; + lq_sta->supp_rates = sta->supp_rates[lq_sta->band]; tid = rs_tl_add_packet(lq_sta, hdr); @@ -1682,18 +2080,22 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, active_tbl = 1 - lq_sta->active_tbl; tbl = &(lq_sta->lq_info[active_tbl]); + if (is_legacy(tbl->lq_type)) + lq_sta->is_green = 0; + else + lq_sta->is_green = rs_use_green(sta, &priv->current_ht_config); is_green = lq_sta->is_green; /* current tx rate */ - index = sta->last_txrate_idx; + index = lq_sta->last_txrate_idx; - IWL_DEBUG_RATE("Rate scale index %d for type %d\n", index, + IWL_DEBUG_RATE(priv, "Rate scale index %d for type %d\n", index, tbl->lq_type); /* rates available for this association, and for modulation mode */ rate_mask = rs_get_supported_rates(lq_sta, hdr, tbl->lq_type); - IWL_DEBUG_RATE("mask 0x%04X \n", rate_mask); + IWL_DEBUG_RATE(priv, "mask 0x%04X \n", rate_mask); /* mask with station rate restriction */ if (is_legacy(tbl->lq_type)) { @@ -1712,16 +2114,35 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, rate_scale_index_msk = rate_mask; if (!((1 << index) & rate_scale_index_msk)) { - IWL_ERROR("Current Rate is not valid\n"); + IWL_ERR(priv, "Current Rate is not valid\n"); + if (lq_sta->search_better_tbl) { + /* revert to active table if search table is not valid*/ + tbl->lq_type = LQ_NONE; + lq_sta->search_better_tbl = 0; + tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); + /* get "active" rate info */ + index = iwl_hwrate_to_plcp_idx(tbl->current_rate); + rate = rs_update_rate_tbl(priv, lq_sta, + tbl, index, is_green); + } return; } /* Get expected throughput table and history window for current rate */ if (!tbl->expected_tpt) { - IWL_ERROR("tbl->expected_tpt is NULL\n"); + IWL_ERR(priv, "tbl->expected_tpt is NULL\n"); return; } + /* force user max rate if set by user */ + if ((lq_sta->max_rate_idx != -1) && + (lq_sta->max_rate_idx < index)) { + index = lq_sta->max_rate_idx; + update_lq = 1; + window = &(tbl->win[index]); + goto lq_update; + } + window = &(tbl->win[index]); /* @@ -1734,7 +2155,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, fail_count = window->counter - window->success_counter; if ((fail_count < IWL_RATE_MIN_FAILURE_TH) && (window->success_counter < IWL_RATE_MIN_SUCCESS_TH)) { - IWL_DEBUG_RATE("LQ: still below TH. succ=%d total=%d " + IWL_DEBUG_RATE(priv, "LQ: still below TH. succ=%d total=%d " "for index %d\n", window->success_counter, window->counter, index); @@ -1746,29 +2167,23 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, rs_stay_in_table(lq_sta); goto out; + } /* Else we have enough samples; calculate estimate of * actual average throughput */ - } else { - /*FIXME:RS remove this else if we don't get this error*/ - if (window->average_tpt != ((window->success_ratio * - tbl->expected_tpt[index] + 64) / 128)) { - IWL_ERROR("expected_tpt should have been calculated" - " by now\n"); - window->average_tpt = ((window->success_ratio * - tbl->expected_tpt[index] + 64) / 128); - } - } - /* If we are searching for better modulation mode, check success. */ - if (lq_sta->search_better_tbl) { + BUG_ON(window->average_tpt != ((window->success_ratio * + tbl->expected_tpt[index] + 64) / 128)); + /* If we are searching for better modulation mode, check success. */ + if (lq_sta->search_better_tbl && + (iwl_tx_ant_restriction(priv) == IWL_ANT_OK_MULTI)) { /* If good success, continue using the "search" mode; * no need to send new link quality command, since we're * continuing to use the setup that we've been trying. */ if (window->average_tpt > lq_sta->last_tpt) { - IWL_DEBUG_RATE("LQ: SWITCHING TO CURRENT TABLE " + IWL_DEBUG_RATE(priv, "LQ: SWITCHING TO NEW TABLE " "suc=%d cur-tpt=%d old-tpt=%d\n", window->success_ratio, window->average_tpt, @@ -1784,7 +2199,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, /* Else poor success; go back to mode in "active" table */ } else { - IWL_DEBUG_RATE("LQ: GOING BACK TO THE OLD TABLE " + IWL_DEBUG_RATE(priv, "LQ: GOING BACK TO THE OLD TABLE " "suc=%d cur-tpt=%d old-tpt=%d\n", window->success_ratio, window->average_tpt, @@ -1819,6 +2234,11 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, low = high_low & 0xff; high = (high_low >> 8) & 0xff; + /* If user set max rate, dont allow higher than user constrain */ + if ((lq_sta->max_rate_idx != -1) && + (lq_sta->max_rate_idx < high)) + high = IWL_RATE_INVALID; + sr = window->success_ratio; /* Collect measured throughputs for current and adjacent rates */ @@ -1832,7 +2252,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, /* Too many failures, decrease rate */ if ((sr <= IWL_RATE_DECREASE_TH) || (current_tpt == 0)) { - IWL_DEBUG_RATE("decrease rate because of low success_ratio\n"); + IWL_DEBUG_RATE(priv, "decrease rate because of low success_ratio\n"); scale_action = -1; /* No throughput measured yet for adjacent rates; try increase. */ @@ -1842,7 +2262,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, if (high != IWL_RATE_INVALID && sr >= IWL_RATE_INCREASE_TH) scale_action = 1; else if (low != IWL_RATE_INVALID) - scale_action = -1; + scale_action = 0; } /* Both adjacent throughputs are measured, but neither one has better @@ -1863,17 +2283,15 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, sr >= IWL_RATE_INCREASE_TH) { scale_action = 1; } else { - IWL_DEBUG_RATE - ("decrease rate because of high tpt\n"); - scale_action = -1; + scale_action = 0; } /* Lower adjacent rate's throughput is measured */ } else if (low_tpt != IWL_INVALID_VALUE) { /* Lower rate has better throughput */ if (low_tpt > current_tpt) { - IWL_DEBUG_RATE - ("decrease rate because of low tpt\n"); + IWL_DEBUG_RATE(priv, + "decrease rate because of low tpt\n"); scale_action = -1; } else if (sr >= IWL_RATE_INCREASE_TH) { scale_action = 1; @@ -1887,7 +2305,11 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, ((sr > IWL_RATE_HIGH_TH) || (current_tpt > (100 * tbl->expected_tpt[low])))) scale_action = 0; - + if (!iwl_ht_enabled(priv) && !is_legacy(tbl->lq_type)) + scale_action = -1; + if (iwl_tx_ant_restriction(priv) != IWL_ANT_OK_MULTI && + (is_mimo2(tbl->lq_type) || is_mimo3(tbl->lq_type))) + scale_action = -1; switch (scale_action) { case -1: /* Decrease starting rate, update uCode's rate table */ @@ -1895,6 +2317,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, update_lq = 1; index = low; } + break; case 1: /* Increase starting rate, update uCode's rate table */ @@ -1910,21 +2333,21 @@ static void rs_rate_scale_perform(struct iwl_priv *priv, break; } - IWL_DEBUG_RATE("choose rate scale index %d action %d low %d " + IWL_DEBUG_RATE(priv, "choose rate scale index %d action %d low %d " "high %d type %d\n", index, scale_action, low, high, tbl->lq_type); lq_update: /* Replace uCode's rate table for the destination station. */ - if (update_lq) { - rate = rate_n_flags_from_tbl(tbl, index, is_green); - rs_fill_link_cmd(priv, lq_sta, rate); - iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); - } - - /* Should we stay with this modulation mode, or search for a new one? */ - rs_stay_in_table(lq_sta); + if (update_lq) + rate = rs_update_rate_tbl(priv, lq_sta, + tbl, index, is_green); + if (iwl_tx_ant_restriction(priv) == IWL_ANT_OK_MULTI) { + /* Should we stay with this modulation mode, + * or search for a new one? */ + rs_stay_in_table(lq_sta); + } /* * Search for new modulation mode if we're: * 1) Not changing rates right now @@ -1941,8 +2364,10 @@ lq_update: rs_move_legacy_other(priv, lq_sta, conf, sta, index); else if (is_siso(tbl->lq_type)) rs_move_siso_to_other(priv, lq_sta, conf, sta, index); + else if (is_mimo2(tbl->lq_type)) + rs_move_mimo2_to_other(priv, lq_sta, conf, sta, index); else - rs_move_mimo_to_other(priv, lq_sta, conf, sta, index); + rs_move_mimo3_to_other(priv, lq_sta, conf, sta, index); /* If new "search" mode was selected, set up in uCode table */ if (lq_sta->search_better_tbl) { @@ -1954,23 +2379,24 @@ lq_update: /* Use new "search" start rate */ index = iwl_hwrate_to_plcp_idx(tbl->current_rate); - IWL_DEBUG_RATE("Switch current mcs: %X index: %d\n", + IWL_DEBUG_RATE(priv, "Switch current mcs: %X index: %d\n", tbl->current_rate, index); rs_fill_link_cmd(priv, lq_sta, tbl->current_rate); iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC); - } + } else + done_search = 1; + } + if (done_search && !lq_sta->stay_in_tbl) { /* If the "active" (non-search) mode was legacy, * and we've tried switching antennas, * but we haven't been able to try HT modes (not available), * stay with best antenna legacy modulation for a while * before next round of mode comparisons. */ tbl1 = &(lq_sta->lq_info[lq_sta->active_tbl]); - if (is_legacy(tbl1->lq_type) && - (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) && - (lq_sta->action_counter >= 1)) { - lq_sta->action_counter = 0; - IWL_DEBUG_RATE("LQ: STAY in legacy table\n"); + if (is_legacy(tbl1->lq_type) && !conf_is_ht(conf) && + lq_sta->action_counter > tbl1->max_search) { + IWL_DEBUG_RATE(priv, "LQ: STAY in legacy table\n"); rs_set_stay_in_table(priv, 1, lq_sta); } @@ -1978,41 +2404,29 @@ lq_update: * have been tried and compared, stay in this best modulation * mode for a while before next round of mode comparisons. */ if (lq_sta->enable_counter && - (lq_sta->action_counter >= IWL_ACTION_LIMIT)) { + (lq_sta->action_counter >= tbl1->max_search) && + iwl_ht_enabled(priv)) { if ((lq_sta->last_tpt > IWL_AGG_TPT_THREHOLD) && (lq_sta->tx_agg_tid_en & (1 << tid)) && (tid != MAX_TID_COUNT)) { - IWL_DEBUG_RATE("try to aggregate tid %d\n", tid); - rs_tl_turn_on_agg(priv, tid, lq_sta, sta); + tid_data = + &priv->stations[lq_sta->lq.sta_id].tid[tid]; + if (tid_data->agg.state == IWL_AGG_OFF) { + IWL_DEBUG_RATE(priv, + "try to aggregate tid %d\n", + tid); + rs_tl_turn_on_agg(priv, tid, + lq_sta, sta); + } } - lq_sta->action_counter = 0; rs_set_stay_in_table(priv, 0, lq_sta); } - - /* - * Else, don't search for a new modulation mode. - * Put new timestamp in stay-in-modulation-mode flush timer if: - * 1) Not changing rates right now - * 2) Not just finishing up a search - * 3) flush timer is empty - */ - } else { - if ((!update_lq) && (!done_search) && (!lq_sta->flush_timer)) - lq_sta->flush_timer = jiffies; } out: - tbl->current_rate = rate_n_flags_from_tbl(tbl, index, is_green); + tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, index, is_green); i = index; - sta->last_txrate_idx = i; - - /* sta->txrate_idx is an index to A mode rates which start - * at IWL_FIRST_OFDM_RATE - */ - if (lq_sta->band == IEEE80211_BAND_5GHZ) - sta->txrate_idx = i - IWL_FIRST_OFDM_RATE; - else - sta->txrate_idx = i; + lq_sta->last_txrate_idx = i; return; } @@ -2020,25 +2434,24 @@ out: static void rs_initialize_lq(struct iwl_priv *priv, struct ieee80211_conf *conf, - struct sta_info *sta) + struct ieee80211_sta *sta, + struct iwl_lq_sta *lq_sta) { - struct iwl_lq_sta *lq_sta; struct iwl_scale_tbl_info *tbl; int rate_idx; int i; u32 rate; - u8 use_green = rs_use_green(priv, conf); + u8 use_green = rs_use_green(sta, &priv->current_ht_config); u8 active_tbl = 0; u8 valid_tx_ant; - if (!sta || !sta->rate_ctrl_priv) + if (!sta || !lq_sta) goto out; - lq_sta = (struct iwl_lq_sta *)sta->rate_ctrl_priv; - i = sta->last_txrate_idx; + i = lq_sta->last_txrate_idx; if ((lq_sta->lq.sta_id == 0xff) && - (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)) + (priv->iw_mode == NL80211_IFTYPE_ADHOC)) goto out; valid_tx_ant = priv->hw_params.valid_tx_ant; @@ -2053,20 +2466,18 @@ static void rs_initialize_lq(struct iwl_priv *priv, if ((i < 0) || (i >= IWL_RATE_COUNT)) i = 0; - /* FIXME:RS: This is also wrong in 4965 */ rate = iwl_rates[i].plcp; - rate |= RATE_MCS_ANT_B_MSK; - rate &= ~RATE_MCS_ANT_A_MSK; + tbl->ant_type = first_antenna(valid_tx_ant); + rate |= tbl->ant_type << RATE_MCS_ANT_POS; if (i >= IWL_FIRST_CCK_RATE && i <= IWL_LAST_CCK_RATE) rate |= RATE_MCS_CCK_MSK; - tbl->ant_type = ANT_B; rs_get_tbl_info_from_mcs(rate, priv->band, tbl, &rate_idx); if (!rs_is_valid_ant(valid_tx_ant, tbl->ant_type)) rs_toggle_antenna(valid_tx_ant, &rate, tbl); - rate = rate_n_flags_from_tbl(tbl, rate_idx, use_green); + rate = rate_n_flags_from_tbl(priv, tbl, rate_idx, use_green); tbl->current_rate = rate; rs_set_expected_tpt_table(lq_sta, tbl); rs_fill_link_cmd(NULL, lq_sta, rate); @@ -2075,78 +2486,100 @@ static void rs_initialize_lq(struct iwl_priv *priv, return; } -static void rs_get_rate(void *priv_rate, struct net_device *dev, - struct ieee80211_supported_band *sband, - struct sk_buff *skb, - struct rate_selection *sel) +static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, void *priv_sta, + struct ieee80211_tx_rate_control *txrc) { - int i; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_conf *conf = &local->hw.conf; + struct sk_buff *skb = txrc->skb; + struct ieee80211_supported_band *sband = txrc->sband; + struct iwl_priv *priv = (struct iwl_priv *)priv_r; + struct ieee80211_conf *conf = &priv->hw->conf; + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct sta_info *sta; - __le16 fc; - struct iwl_priv *priv = (struct iwl_priv *)priv_rate; - struct iwl_lq_sta *lq_sta; - - IWL_DEBUG_RATE_LIMIT("rate scale calculate new rate for skb\n"); - - rcu_read_lock(); - - sta = sta_info_get(local, hdr->addr1); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct iwl_lq_sta *lq_sta = priv_sta; + int rate_idx; - /* Send management frames and broadcast/multicast data using lowest - * rate. */ - fc = hdr->frame_control; - if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1) || - !sta || !sta->rate_ctrl_priv) { - sel->rate_idx = rate_lowest_index(local, sband, sta); - goto out; + IWL_DEBUG_RATE_LIMIT(priv, "rate scale calculate new rate for skb\n"); + + /* Get max rate if user set max rate */ + if (lq_sta) { + lq_sta->max_rate_idx = txrc->max_rate_idx; + if ((sband->band == IEEE80211_BAND_5GHZ) && + (lq_sta->max_rate_idx != -1)) + lq_sta->max_rate_idx += IWL_FIRST_OFDM_RATE; + if ((lq_sta->max_rate_idx < 0) || + (lq_sta->max_rate_idx >= IWL_RATE_COUNT)) + lq_sta->max_rate_idx = -1; } - lq_sta = (struct iwl_lq_sta *)sta->rate_ctrl_priv; - i = sta->last_txrate_idx; + /* Send management frames and NO_ACK data using lowest rate. */ + if (rate_control_send_low(sta, priv_sta, txrc)) + return; + + rate_idx = lq_sta->last_txrate_idx; - if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && + if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) && !lq_sta->ibss_sta_added) { u8 sta_id = iwl_find_station(priv, hdr->addr1); - DECLARE_MAC_BUF(mac); if (sta_id == IWL_INVALID_STATION) { - IWL_DEBUG_RATE("LQ: ADD station %s\n", - print_mac(mac, hdr->addr1)); - sta_id = iwl_add_station_flags(priv, hdr->addr1, - 0, CMD_ASYNC, NULL); + IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n", + hdr->addr1); + sta_id = iwl_add_station(priv, hdr->addr1, + false, CMD_ASYNC, ht_cap); } if ((sta_id != IWL_INVALID_STATION)) { lq_sta->lq.sta_id = sta_id; lq_sta->lq.rs_table[0].rate_n_flags = 0; lq_sta->ibss_sta_added = 1; - rs_initialize_lq(priv, conf, sta); + rs_initialize_lq(priv, conf, sta, lq_sta); } } - if ((i < 0) || (i > IWL_RATE_COUNT)) { - sel->rate_idx = rate_lowest_index(local, sband, sta); - goto out; + if (lq_sta->last_rate_n_flags & RATE_MCS_HT_MSK) { + rate_idx -= IWL_FIRST_OFDM_RATE; + /* 6M and 9M shared same MCS index */ + rate_idx = (rate_idx > 0) ? (rate_idx - 1) : 0; + if (rs_extract_rate(lq_sta->last_rate_n_flags) >= + IWL_RATE_MIMO3_6M_PLCP) + rate_idx = rate_idx + (2 * MCS_INDEX_PER_STREAM); + else if (rs_extract_rate(lq_sta->last_rate_n_flags) >= + IWL_RATE_MIMO2_6M_PLCP) + rate_idx = rate_idx + MCS_INDEX_PER_STREAM; + info->control.rates[0].flags = IEEE80211_TX_RC_MCS; + if (lq_sta->last_rate_n_flags & RATE_MCS_SGI_MSK) + info->control.rates[0].flags |= IEEE80211_TX_RC_SHORT_GI; + if (lq_sta->last_rate_n_flags & RATE_MCS_DUP_MSK) + info->control.rates[0].flags |= IEEE80211_TX_RC_DUP_DATA; + if (lq_sta->last_rate_n_flags & RATE_MCS_HT40_MSK) + info->control.rates[0].flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; + if (lq_sta->last_rate_n_flags & RATE_MCS_GF_MSK) + info->control.rates[0].flags |= IEEE80211_TX_RC_GREEN_FIELD; + } else { + /* Check for invalid rates */ + if ((rate_idx < 0) || (rate_idx >= IWL_RATE_COUNT_LEGACY) || + ((sband->band == IEEE80211_BAND_5GHZ) && + (rate_idx < IWL_FIRST_OFDM_RATE))) + rate_idx = rate_lowest_index(sband, sta); + /* On valid 5 GHz rate, adjust index */ + else if (sband->band == IEEE80211_BAND_5GHZ) + rate_idx -= IWL_FIRST_OFDM_RATE; + info->control.rates[0].flags = 0; } + info->control.rates[0].idx = rate_idx; - if (sband->band == IEEE80211_BAND_5GHZ) - i -= IWL_FIRST_OFDM_RATE; - sel->rate_idx = i; -out: - rcu_read_unlock(); } -static void *rs_alloc_sta(void *priv_rate, gfp_t gfp) +static void *rs_alloc_sta(void *priv_rate, struct ieee80211_sta *sta, + gfp_t gfp) { struct iwl_lq_sta *lq_sta; struct iwl_priv *priv; int i, j; priv = (struct iwl_priv *)priv_rate; - IWL_DEBUG_RATE("create station rate scale window\n"); + IWL_DEBUG_RATE(priv, "create station rate scale window\n"); lq_sta = kzalloc(sizeof(struct iwl_lq_sta), gfp); @@ -2162,45 +2595,39 @@ static void *rs_alloc_sta(void *priv_rate, gfp_t gfp) return lq_sta; } -static void rs_rate_init(void *priv_rate, void *priv_sta, - struct ieee80211_local *local, - struct sta_info *sta) +static void rs_rate_init(void *priv_r, struct ieee80211_supported_band *sband, + struct ieee80211_sta *sta, void *priv_sta) { int i, j; - struct ieee80211_conf *conf = &local->hw.conf; - struct ieee80211_supported_band *sband; - struct iwl_priv *priv = (struct iwl_priv *)priv_rate; + struct iwl_priv *priv = (struct iwl_priv *)priv_r; + struct ieee80211_conf *conf = &priv->hw->conf; + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; struct iwl_lq_sta *lq_sta = priv_sta; - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - lq_sta->flush_timer = 0; lq_sta->supp_rates = sta->supp_rates[sband->band]; - sta->txrate_idx = 3; for (j = 0; j < LQ_SIZE; j++) for (i = 0; i < IWL_RATE_COUNT; i++) rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]); - IWL_DEBUG_RATE("LQ: *** rate scale global init ***\n"); + IWL_DEBUG_RATE(priv, "LQ: *** rate scale station global init ***\n"); /* TODO: what is a good starting rate for STA? About middle? Maybe not * the lowest or the highest rate.. Could consider using RSSI from * previous packets? Need to have IEEE 802.1X auth succeed immediately * after assoc.. */ lq_sta->ibss_sta_added = 0; - if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { - u8 sta_id = iwl_find_station(priv, sta->addr); - DECLARE_MAC_BUF(mac); + if (priv->iw_mode == NL80211_IFTYPE_AP) { + u8 sta_id = iwl_find_station(priv, + sta->addr); /* for IBSS the call are from tasklet */ - IWL_DEBUG_RATE("LQ: ADD station %s\n", - print_mac(mac, sta->addr)); + IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n", sta->addr); if (sta_id == IWL_INVALID_STATION) { - IWL_DEBUG_RATE("LQ: ADD station %s\n", - print_mac(mac, sta->addr)); - sta_id = iwl_add_station_flags(priv, sta->addr, - 0, CMD_ASYNC, NULL); + IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n", sta->addr); + sta_id = iwl_add_station(priv, sta->addr, false, + CMD_ASYNC, ht_cap); } if ((sta_id != IWL_INVALID_STATION)) { lq_sta->lq.sta_id = sta_id; @@ -2210,19 +2637,10 @@ static void rs_rate_init(void *priv_rate, void *priv_sta, priv->assoc_station_added = 1; } - /* Find highest tx rate supported by hardware and destination station */ - for (i = 0; i < sband->n_bitrates; i++) - if (sta->supp_rates[sband->band] & BIT(i)) - sta->txrate_idx = i; - - sta->last_txrate_idx = sta->txrate_idx; - /* WTF is with this bogus comment? A doesn't have cck rates */ - /* For MODE_IEEE80211A, cck rates are at end of rate table */ - if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) - sta->last_txrate_idx += IWL_FIRST_OFDM_RATE; - lq_sta->is_dup = 0; - lq_sta->is_green = rs_use_green(priv, conf); + lq_sta->max_rate_idx = -1; + lq_sta->missed_rate_counter = IWL_MISSED_RATE_MAX; + lq_sta->is_green = rs_use_green(sta, &priv->current_ht_config); lq_sta->active_legacy_rate = priv->active_rate & ~(0x1000); lq_sta->active_rate_basic = priv->active_rate_basic; lq_sta->band = priv->band; @@ -2230,28 +2648,28 @@ static void rs_rate_init(void *priv_rate, void *priv_sta, * active_siso_rate mask includes 9 MBits (bit 5), and CCK (bits 0-3), * supp_rates[] does not; shift to convert format, force 9 MBits off. */ - lq_sta->active_siso_rate = conf->ht_conf.supp_mcs_set[0] << 1; - lq_sta->active_siso_rate |= conf->ht_conf.supp_mcs_set[0] & 0x1; + lq_sta->active_siso_rate = ht_cap->mcs.rx_mask[0] << 1; + lq_sta->active_siso_rate |= ht_cap->mcs.rx_mask[0] & 0x1; lq_sta->active_siso_rate &= ~((u16)0x2); lq_sta->active_siso_rate <<= IWL_FIRST_OFDM_RATE; /* Same here */ - lq_sta->active_mimo2_rate = conf->ht_conf.supp_mcs_set[1] << 1; - lq_sta->active_mimo2_rate |= conf->ht_conf.supp_mcs_set[1] & 0x1; + lq_sta->active_mimo2_rate = ht_cap->mcs.rx_mask[1] << 1; + lq_sta->active_mimo2_rate |= ht_cap->mcs.rx_mask[1] & 0x1; lq_sta->active_mimo2_rate &= ~((u16)0x2); lq_sta->active_mimo2_rate <<= IWL_FIRST_OFDM_RATE; - lq_sta->active_mimo3_rate = conf->ht_conf.supp_mcs_set[2] << 1; - lq_sta->active_mimo3_rate |= conf->ht_conf.supp_mcs_set[2] & 0x1; + lq_sta->active_mimo3_rate = ht_cap->mcs.rx_mask[2] << 1; + lq_sta->active_mimo3_rate |= ht_cap->mcs.rx_mask[2] & 0x1; lq_sta->active_mimo3_rate &= ~((u16)0x2); lq_sta->active_mimo3_rate <<= IWL_FIRST_OFDM_RATE; - IWL_DEBUG_RATE("SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n", + IWL_DEBUG_RATE(priv, "SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n", lq_sta->active_siso_rate, lq_sta->active_mimo2_rate, lq_sta->active_mimo3_rate); - /* These values will be overriden later */ + /* These values will be overridden later */ lq_sta->lq.general_params.single_stream_ant_msk = ANT_A; lq_sta->lq.general_params.dual_stream_ant_msk = ANT_AB; @@ -2259,10 +2677,15 @@ static void rs_rate_init(void *priv_rate, void *priv_sta, lq_sta->tx_agg_tid_en = IWL_AGG_ALL_TID; lq_sta->drv = priv; - rs_initialize_lq(priv, conf, sta); + /* Set last_txrate_idx to lowest rate */ + lq_sta->last_txrate_idx = rate_lowest_index(sband, sta); + if (sband->band == IEEE80211_BAND_5GHZ) + lq_sta->last_txrate_idx += IWL_FIRST_OFDM_RATE; + + rs_initialize_lq(priv, conf, sta, lq_sta); } -static void rs_fill_link_cmd(const struct iwl_priv *priv, +static void rs_fill_link_cmd(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta, u32 new_rate) { struct iwl_scale_tbl_info tbl_type; @@ -2376,14 +2799,15 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv, repeat_rate--; } - lq_cmd->agg_params.agg_frame_cnt_limit = 64; - lq_cmd->agg_params.agg_dis_start_th = 3; - lq_cmd->agg_params.agg_time_limit = cpu_to_le16(4000); + lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_MAX; + lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; + lq_cmd->agg_params.agg_time_limit = + cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); } -static void *rs_alloc(struct ieee80211_local *local) +static void *rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) { - return local->hw.priv; + return hw->priv; } /* rate scale requires free function to be implemented */ static void rs_free(void *priv_rate) @@ -2391,28 +2815,15 @@ static void rs_free(void *priv_rate) return; } -static void rs_clear(void *priv_rate) -{ -#ifdef CONFIG_IWLWIFI_DEBUG - struct iwl_priv *priv = (struct iwl_priv *) priv_rate; - - IWL_DEBUG_RATE("enter\n"); - - /* TODO - add rate scale state reset */ - - IWL_DEBUG_RATE("leave\n"); -#endif /* CONFIG_IWLWIFI_DEBUG */ -} - -static void rs_free_sta(void *priv_rate, void *priv_sta) +static void rs_free_sta(void *priv_r, struct ieee80211_sta *sta, + void *priv_sta) { struct iwl_lq_sta *lq_sta = priv_sta; - struct iwl_priv *priv; + struct iwl_priv *priv __maybe_unused = priv_r; - priv = (struct iwl_priv *)priv_rate; - IWL_DEBUG_RATE("enter\n"); + IWL_DEBUG_RATE(priv, "enter\n"); kfree(lq_sta); - IWL_DEBUG_RATE("leave\n"); + IWL_DEBUG_RATE(priv, "leave\n"); } @@ -2426,20 +2837,27 @@ static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, u32 *rate_n_flags, int index) { struct iwl_priv *priv; + u8 valid_tx_ant; + u8 ant_sel_tx; priv = lq_sta->drv; + valid_tx_ant = priv->hw_params.valid_tx_ant; if (lq_sta->dbg_fixed_rate) { - if (index < 12) { + ant_sel_tx = + ((lq_sta->dbg_fixed_rate & RATE_MCS_ANT_ABC_MSK) + >> RATE_MCS_ANT_POS); + if ((valid_tx_ant & ant_sel_tx) == ant_sel_tx) { *rate_n_flags = lq_sta->dbg_fixed_rate; + IWL_DEBUG_RATE(priv, "Fixed rate ON\n"); } else { - if (lq_sta->band == IEEE80211_BAND_5GHZ) - *rate_n_flags = 0x800D; - else - *rate_n_flags = 0x820A; + lq_sta->dbg_fixed_rate = 0; + IWL_ERR(priv, + "Invalid antenna selection 0x%X, Valid is 0x%X\n", + ant_sel_tx, valid_tx_ant); + IWL_DEBUG_RATE(priv, "Fixed rate OFF\n"); } - IWL_DEBUG_RATE("Fixed rate ON\n"); } else { - IWL_DEBUG_RATE("Fixed rate OFF\n"); + IWL_DEBUG_RATE(priv, "Fixed rate OFF\n"); } } @@ -2468,7 +2886,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ - IWL_DEBUG_RATE("sta_id %d rate 0x%X\n", + IWL_DEBUG_RATE(priv, "sta_id %d rate 0x%X\n", lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate); if (lq_sta->dbg_fixed_rate) { @@ -2482,11 +2900,20 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { - char buff[1024]; + char *buff; int desc = 0; int i = 0; + int index = 0; + ssize_t ret; struct iwl_lq_sta *lq_sta = file->private_data; + struct iwl_priv *priv; + struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); + + priv = lq_sta->drv; + buff = kmalloc(1024, GFP_KERNEL); + if (!buff) + return -ENOMEM; desc += sprintf(buff+desc, "sta_id %d\n", lq_sta->lq.sta_id); desc += sprintf(buff+desc, "failed=%d success=%d rate=0%X\n", @@ -2494,6 +2921,23 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, lq_sta->active_legacy_rate); desc += sprintf(buff+desc, "fixed rate 0x%X\n", lq_sta->dbg_fixed_rate); + desc += sprintf(buff+desc, "valid_tx_ant %s%s%s\n", + (priv->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "", + (priv->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "", + (priv->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : ""); + desc += sprintf(buff+desc, "lq type %s\n", + (is_legacy(tbl->lq_type)) ? "legacy" : "HT"); + if (is_Ht(tbl->lq_type)) { + desc += sprintf(buff+desc, " %s", + (is_siso(tbl->lq_type)) ? "SISO" : + ((is_mimo2(tbl->lq_type)) ? "MIMO2" : "MIMO3")); + desc += sprintf(buff+desc, " %s", + (tbl->is_ht40) ? "40MHz" : "20MHz"); + desc += sprintf(buff+desc, " %s %s\n", (tbl->is_SGI) ? "SGI" : "", + (lq_sta->is_green) ? "GF enabled" : ""); + } + desc += sprintf(buff+desc, "last tx rate=0x%X\n", + lq_sta->last_rate_n_flags); desc += sprintf(buff+desc, "general:" "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n", lq_sta->lq.general_params.flags, @@ -2514,12 +2958,23 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, lq_sta->lq.general_params.start_rate_index[2], lq_sta->lq.general_params.start_rate_index[3]); + for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { + index = iwl_hwrate_to_plcp_idx( + le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags)); + if (is_legacy(tbl->lq_type)) { + desc += sprintf(buff+desc, " rate[%d] 0x%X %smbps\n", + i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags), + iwl_rate_mcs[index].mbps); + } else { + desc += sprintf(buff+desc, " rate[%d] 0x%X %smbps (%s)\n", + i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags), + iwl_rate_mcs[index].mbps, iwl_rate_mcs[index].mcs); + } + } - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) - desc += sprintf(buff+desc, " rate[%d] 0x%X\n", - i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags)); - - return simple_read_from_buffer(user_buf, count, ppos, buff, desc); + ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); + kfree(buff); + return ret; } static const struct file_operations rs_sta_dbgfs_scale_table_ops = { @@ -2530,19 +2985,27 @@ static const struct file_operations rs_sta_dbgfs_scale_table_ops = { static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { - char buff[1024]; + char *buff; int desc = 0; int i, j; + ssize_t ret; struct iwl_lq_sta *lq_sta = file->private_data; + + buff = kmalloc(1024, GFP_KERNEL); + if (!buff) + return -ENOMEM; + for (i = 0; i < LQ_SIZE; i++) { - desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d\n" + desc += sprintf(buff+desc, + "%s type=%d SGI=%d HT40=%d DUP=%d GF=%d\n" "rate=0x%X\n", - lq_sta->active_tbl == i?"*":"x", + lq_sta->active_tbl == i ? "*" : "x", lq_sta->lq_info[i].lq_type, lq_sta->lq_info[i].is_SGI, - lq_sta->lq_info[i].is_fat, + lq_sta->lq_info[i].is_ht40, lq_sta->lq_info[i].is_dup, + lq_sta->is_green, lq_sta->lq_info[i].current_rate); for (j = 0; j < IWL_RATE_COUNT; j++) { desc += sprintf(buff+desc, @@ -2552,7 +3015,9 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file, lq_sta->lq_info[i].win[j].success_ratio); } } - return simple_read_from_buffer(user_buf, count, ppos, buff, desc); + ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); + kfree(buff); + return ret; } static const struct file_operations rs_sta_dbgfs_stats_table_ops = { @@ -2560,6 +3025,43 @@ static const struct file_operations rs_sta_dbgfs_stats_table_ops = { .open = open_file_generic, }; +static ssize_t rs_sta_dbgfs_rate_scale_data_read(struct file *file, + char __user *user_buf, size_t count, loff_t *ppos) +{ + char buff[120]; + int desc = 0; + ssize_t ret; + + struct iwl_lq_sta *lq_sta = file->private_data; + struct iwl_priv *priv; + struct iwl_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl]; + + priv = lq_sta->drv; + + if (is_Ht(tbl->lq_type)) + desc += sprintf(buff+desc, + "Bit Rate= %d Mb/s\n", + tbl->expected_tpt[lq_sta->last_txrate_idx]); + else + desc += sprintf(buff+desc, + "Bit Rate= %d Mb/s\n", + iwl_rates[lq_sta->last_txrate_idx].ieee >> 1); + desc += sprintf(buff+desc, + "Signal Level= %d dBm\tNoise Level= %d dBm\n", + priv->last_rx_rssi, priv->last_rx_noise); + desc += sprintf(buff+desc, + "Tsf= 0x%llx\tBeacon time= 0x%08X\n", + priv->last_tsf, priv->last_beacon_time); + + ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); + return ret; +} + +static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = { + .read = rs_sta_dbgfs_rate_scale_data_read, + .open = open_file_generic, +}; + static void rs_add_debugfs(void *priv, void *priv_sta, struct dentry *dir) { @@ -2570,6 +3072,9 @@ static void rs_add_debugfs(void *priv, void *priv_sta, lq_sta->rs_sta_dbgfs_stats_table_file = debugfs_create_file("rate_stats_table", 0600, dir, lq_sta, &rs_sta_dbgfs_stats_table_ops); + lq_sta->rs_sta_dbgfs_rate_scale_data_file = + debugfs_create_file("rate_scale_data", 0600, dir, + lq_sta, &rs_sta_dbgfs_rate_scale_data_ops); lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file = debugfs_create_u8("tx_agg_tid_enable", 0600, dir, &lq_sta->tx_agg_tid_en); @@ -2581,6 +3086,7 @@ static void rs_remove_debugfs(void *priv, void *priv_sta) struct iwl_lq_sta *lq_sta = priv_sta; debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file); debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); + debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file); debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file); } #endif @@ -2591,7 +3097,6 @@ static struct rate_control_ops rs_ops = { .tx_status = rs_tx_status, .get_rate = rs_get_rate, .rate_init = rs_rate_init, - .clear = rs_clear, .alloc = rs_alloc, .free = rs_free, .alloc_sta = rs_alloc_sta,