diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rs.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rs.c | 568 |
1 files changed, 291 insertions, 277 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c index 0598f26b5da9..3af90620b3de 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/iwlwifi/mvm/rs.c @@ -175,6 +175,7 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, struct iwl_lq_sta *lq_sta, u32 rate_n_flags); static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search); static const char *rs_pretty_lq_type(enum iwl_table_type type); +static const char *rs_pretty_ant(u8 ant); #ifdef CONFIG_MAC80211_DEBUGFS static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta, @@ -264,6 +265,15 @@ static const struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = { #define MCS_INDEX_PER_STREAM (8) +static inline void rs_dump_rate(struct iwl_mvm *mvm, const struct rs_rate *rate, + const char *prefix) +{ + IWL_DEBUG_RATE(mvm, "%s: (%s: %d) ANT: %s BW: %d SGI: %d\n", + prefix, rs_pretty_lq_type(rate->type), + rate->index, rs_pretty_ant(rate->ant), + rate->bw, rate->sgi); +} + static void rs_rate_scale_clear_window(struct iwl_rate_scale_data *window) { window->data = 0; @@ -430,167 +440,160 @@ static int rs_collect_tx_data(struct iwl_scale_tbl_info *tbl, return 0; } -/* - * 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_mvm *mvm, - struct iwl_scale_tbl_info *tbl, int index) +/* Convert rs_rate object into ucode rate bitmask */ +static u32 ucode_rate_from_rs_rate(struct iwl_mvm *mvm, + struct rs_rate *rate) { - u32 rate_n_flags = 0; + u32 ucode_rate = 0; + int index = rate->index; - rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) & + ucode_rate |= ((rate->ant << RATE_MCS_ANT_POS) & RATE_MCS_ANT_ABC_MSK); - if (is_legacy(tbl->lq_type)) { - rate_n_flags |= iwl_rates[index].plcp; + if (is_legacy(rate)) { + ucode_rate |= iwl_rates[index].plcp; if (index >= IWL_FIRST_CCK_RATE && index <= IWL_LAST_CCK_RATE) - rate_n_flags |= RATE_MCS_CCK_MSK; - return rate_n_flags; + ucode_rate |= RATE_MCS_CCK_MSK; + return ucode_rate; } - if (is_ht(tbl->lq_type)) { + if (is_ht(rate)) { if (index < IWL_FIRST_HT_RATE || index > IWL_LAST_HT_RATE) { IWL_ERR(mvm, "Invalid HT rate index %d\n", index); index = IWL_LAST_HT_RATE; } - rate_n_flags |= RATE_MCS_HT_MSK; + ucode_rate |= RATE_MCS_HT_MSK; - if (is_ht_siso(tbl->lq_type)) - rate_n_flags |= iwl_rates[index].plcp_ht_siso; - else if (is_ht_mimo2(tbl->lq_type)) - rate_n_flags |= iwl_rates[index].plcp_ht_mimo2; + if (is_ht_siso(rate)) + ucode_rate |= iwl_rates[index].plcp_ht_siso; + else if (is_ht_mimo2(rate)) + ucode_rate |= iwl_rates[index].plcp_ht_mimo2; else WARN_ON_ONCE(1); - } else if (is_vht(tbl->lq_type)) { + } else if (is_vht(rate)) { if (index < IWL_FIRST_VHT_RATE || index > IWL_LAST_VHT_RATE) { IWL_ERR(mvm, "Invalid VHT rate index %d\n", index); index = IWL_LAST_VHT_RATE; } - rate_n_flags |= RATE_MCS_VHT_MSK; - if (is_vht_siso(tbl->lq_type)) - rate_n_flags |= iwl_rates[index].plcp_vht_siso; - else if (is_vht_mimo2(tbl->lq_type)) - rate_n_flags |= iwl_rates[index].plcp_vht_mimo2; + ucode_rate |= RATE_MCS_VHT_MSK; + if (is_vht_siso(rate)) + ucode_rate |= iwl_rates[index].plcp_vht_siso; + else if (is_vht_mimo2(rate)) + ucode_rate |= iwl_rates[index].plcp_vht_mimo2; else WARN_ON_ONCE(1); } else { - IWL_ERR(mvm, "Invalid tbl->lq_type %d\n", tbl->lq_type); + IWL_ERR(mvm, "Invalid rate->type %d\n", rate->type); } - rate_n_flags |= tbl->bw; - if (tbl->is_SGI) - rate_n_flags |= RATE_MCS_SGI_MSK; + ucode_rate |= rate->bw; + if (rate->sgi) + ucode_rate |= RATE_MCS_SGI_MSK; - return rate_n_flags; + return ucode_rate; } -/* - * Interpret uCode API's rate_n_flags format, - * fill "search" or "active" tx mode table. - */ -static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags, - enum ieee80211_band band, - struct iwl_scale_tbl_info *tbl, - int *rate_idx) +/* Convert a ucode rate into an rs_rate object */ +static int rs_rate_from_ucode_rate(const u32 ucode_rate, + enum ieee80211_band band, + struct rs_rate *rate) { - u32 ant_msk = (rate_n_flags & RATE_MCS_ANT_ABC_MSK); - u8 num_of_ant = get_num_of_ant_from_rate(rate_n_flags); + u32 ant_msk = ucode_rate & RATE_MCS_ANT_ABC_MSK; + u8 num_of_ant = get_num_of_ant_from_rate(ucode_rate); u8 nss; - memset(tbl, 0, offsetof(struct iwl_scale_tbl_info, win)); - *rate_idx = iwl_hwrate_to_plcp_idx(rate_n_flags); + memset(rate, 0, sizeof(struct rs_rate)); + rate->index = iwl_hwrate_to_plcp_idx(ucode_rate); - if (*rate_idx == IWL_RATE_INVALID) { - *rate_idx = -1; + if (rate->index == IWL_RATE_INVALID) { + rate->index = -1; return -EINVAL; } - tbl->is_SGI = 0; /* default legacy setup */ - tbl->bw = 0; - tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS); - tbl->lq_type = LQ_NONE; - tbl->max_search = IWL_MAX_SEARCH; + + rate->ant = (ant_msk >> RATE_MCS_ANT_POS); /* Legacy */ - if (!(rate_n_flags & RATE_MCS_HT_MSK) && - !(rate_n_flags & RATE_MCS_VHT_MSK)) { + if (!(ucode_rate & RATE_MCS_HT_MSK) && + !(ucode_rate & RATE_MCS_VHT_MSK)) { if (num_of_ant == 1) { if (band == IEEE80211_BAND_5GHZ) - tbl->lq_type = LQ_LEGACY_A; + rate->type = LQ_LEGACY_A; else - tbl->lq_type = LQ_LEGACY_G; + rate->type = LQ_LEGACY_G; } return 0; } /* HT or VHT */ - if (rate_n_flags & RATE_MCS_SGI_MSK) - tbl->is_SGI = 1; + if (ucode_rate & RATE_MCS_SGI_MSK) + rate->sgi = true; - tbl->bw = rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK; + rate->bw = ucode_rate & RATE_MCS_CHAN_WIDTH_MSK; - if (rate_n_flags & RATE_MCS_HT_MSK) { - nss = ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >> + if (ucode_rate & RATE_MCS_HT_MSK) { + nss = ((ucode_rate & RATE_HT_MCS_NSS_MSK) >> RATE_HT_MCS_NSS_POS) + 1; if (nss == 1) { - tbl->lq_type = LQ_HT_SISO; + rate->type = LQ_HT_SISO; WARN_ON_ONCE(num_of_ant != 1); } else if (nss == 2) { - tbl->lq_type = LQ_HT_MIMO2; + rate->type = LQ_HT_MIMO2; WARN_ON_ONCE(num_of_ant != 2); } else { WARN_ON_ONCE(1); } - } else if (rate_n_flags & RATE_MCS_VHT_MSK) { - nss = ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> + } else if (ucode_rate & RATE_MCS_VHT_MSK) { + nss = ((ucode_rate & RATE_VHT_MCS_NSS_MSK) >> RATE_VHT_MCS_NSS_POS) + 1; if (nss == 1) { - tbl->lq_type = LQ_VHT_SISO; + rate->type = LQ_VHT_SISO; WARN_ON_ONCE(num_of_ant != 1); } else if (nss == 2) { - tbl->lq_type = LQ_VHT_MIMO2; + rate->type = LQ_VHT_MIMO2; WARN_ON_ONCE(num_of_ant != 2); } else { WARN_ON_ONCE(1); } } - WARN_ON_ONCE(tbl->bw == RATE_MCS_CHAN_WIDTH_160); - WARN_ON_ONCE(tbl->bw == RATE_MCS_CHAN_WIDTH_80 && - !is_vht(tbl->lq_type)); + WARN_ON_ONCE(rate->bw == RATE_MCS_CHAN_WIDTH_160); + WARN_ON_ONCE(rate->bw == RATE_MCS_CHAN_WIDTH_80 && + !is_vht(rate)); return 0; } /* switch to another antenna/antennas and return 1 */ /* if no other valid antenna found, return 0 */ -static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags, - struct iwl_scale_tbl_info *tbl) +static int rs_toggle_antenna(u32 valid_ant, u32 *ucode_rate, + struct rs_rate *rate) { u8 new_ant_type; - if (!tbl->ant_type || tbl->ant_type > ANT_ABC) + if (!rate->ant || rate->ant > ANT_ABC) return 0; - if (!rs_is_valid_ant(valid_ant, tbl->ant_type)) + if (!rs_is_valid_ant(valid_ant, rate->ant)) return 0; - new_ant_type = ant_toggle_lookup[tbl->ant_type]; + new_ant_type = ant_toggle_lookup[rate->ant]; - while ((new_ant_type != tbl->ant_type) && + while ((new_ant_type != rate->ant) && !rs_is_valid_ant(valid_ant, new_ant_type)) new_ant_type = ant_toggle_lookup[new_ant_type]; - if (new_ant_type == tbl->ant_type) + if (new_ant_type == rate->ant) return 0; - tbl->ant_type = new_ant_type; - *rate_n_flags &= ~RATE_MCS_ANT_ABC_MSK; - *rate_n_flags |= new_ant_type << RATE_MCS_ANT_POS; + rate->ant = new_ant_type; + + /* TODO: get rid of ucode_rate here. This should handle only rs_rate */ + *ucode_rate &= ~RATE_MCS_ANT_ABC_MSK; + *ucode_rate |= new_ant_type << RATE_MCS_ANT_POS; return 1; } @@ -603,13 +606,13 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags, */ static u16 rs_get_supported_rates(struct iwl_lq_sta *lq_sta, struct ieee80211_hdr *hdr, - enum iwl_table_type rate_type) + struct rs_rate *rate) { - if (is_legacy(rate_type)) + if (is_legacy(rate)) return lq_sta->active_legacy_rate; - else if (is_siso(rate_type)) + else if (is_siso(rate)) return lq_sta->active_siso_rate; - else if (is_mimo2(rate_type)) + else if (is_mimo2(rate)) return lq_sta->active_mimo2_rate; WARN_ON_ONCE(1); @@ -624,7 +627,7 @@ static u16 rs_get_adjacent_rate(struct iwl_mvm *mvm, u8 index, u16 rate_mask, /* 802.11A or ht walks to the next literal adjacent rate in * the rate table */ - if (is_a_band(rate_type) || !is_legacy(rate_type)) { + if (is_type_a_band(rate_type) || !is_type_legacy(rate_type)) { int i; u32 mask; @@ -673,7 +676,7 @@ static u16 rs_get_adjacent_rate(struct iwl_mvm *mvm, u8 index, u16 rate_mask, } static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, - struct iwl_scale_tbl_info *tbl, + struct rs_rate *rate, u8 scale_index, u8 ht_possible) { s32 low; @@ -685,30 +688,29 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, /* check if we need to switch from HT to legacy rates. * assumption is that mandatory rates (1Mbps or 6Mbps) * are always supported (spec demand) */ - if (!is_legacy(tbl->lq_type) && (!ht_possible || !scale_index)) { + if (!is_legacy(rate) && (!ht_possible || !scale_index)) { switch_to_legacy = 1; scale_index = rs_ht_to_legacy[scale_index]; if (lq_sta->band == IEEE80211_BAND_5GHZ) - tbl->lq_type = LQ_LEGACY_A; + rate->type = LQ_LEGACY_A; else - tbl->lq_type = LQ_LEGACY_G; + rate->type = LQ_LEGACY_G; - if (num_of_ant(tbl->ant_type) > 1) - tbl->ant_type = + if (num_of_ant(rate->ant) > 1) + rate->ant = first_antenna(iwl_fw_valid_tx_ant(mvm->fw)); - tbl->bw = 0; - tbl->is_SGI = 0; - tbl->max_search = IWL_MAX_SEARCH; + rate->bw = 0; + rate->sgi = false; } - rate_mask = rs_get_supported_rates(lq_sta, NULL, tbl->lq_type); + rate_mask = rs_get_supported_rates(lq_sta, NULL, rate); /* Mask with station rate restriction */ - if (is_legacy(tbl->lq_type)) { + if (is_legacy(rate)) { /* supp_rates has no CCK bits in A mode */ if (lq_sta->band == IEEE80211_BAND_5GHZ) - rate_mask = (u16)(rate_mask & + rate_mask = (u16)(rate_mask & (lq_sta->supp_rates << IWL_FIRST_OFDM_RATE)); else rate_mask = (u16)(rate_mask & lq_sta->supp_rates); @@ -721,24 +723,22 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta, } high_low = rs_get_adjacent_rate(lq_sta->drv, scale_index, rate_mask, - tbl->lq_type); + rate->type); low = high_low & 0xff; if (low == IWL_RATE_INVALID) low = scale_index; out: - return rate_n_flags_from_tbl(lq_sta->drv, tbl, low); + rate->index = low; + return ucode_rate_from_rs_rate(lq_sta->drv, rate); } -/* - * Simple function to compare two rate scale table types - */ -static bool table_type_matches(struct iwl_scale_tbl_info *a, - struct iwl_scale_tbl_info *b) +/* Simple function to compare two rate scale table types */ +static inline bool rs_rate_match(struct rs_rate *a, + struct rs_rate *b) { - return (a->lq_type == b->lq_type) && (a->ant_type == b->ant_type) && - (a->is_SGI == b->is_SGI); + return (a->type == b->type) && (a->ant == b->ant) && (a->sgi == b->sgi); } static u32 rs_ch_width_from_mac_flags(enum mac80211_rate_control_flags flags) @@ -762,7 +762,7 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, { int legacy_success; int retries; - int rs_index, mac_index, i; + int mac_index, i; struct iwl_lq_sta *lq_sta = priv_sta; struct iwl_lq_cmd *table; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; @@ -770,8 +770,8 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); enum mac80211_rate_control_flags mac_flags; - u32 tx_rate; - struct iwl_scale_tbl_info tbl_type; + u32 ucode_rate; + struct rs_rate rate; struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl; /* Treat uninitialized rate scaling data same as non-existing. */ @@ -801,10 +801,10 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, * to a new "search" mode (which might become the new "active" mode). */ table = &lq_sta->lq; - tx_rate = le32_to_cpu(table->rs_table[0]); - rs_get_tbl_info_from_mcs(tx_rate, info->band, &tbl_type, &rs_index); + ucode_rate = le32_to_cpu(table->rs_table[0]); + rs_rate_from_ucode_rate(ucode_rate, info->band, &rate); if (info->band == IEEE80211_BAND_5GHZ) - rs_index -= IWL_FIRST_OFDM_RATE; + rate.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 */ @@ -827,19 +827,19 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, /* Here we actually compare this rate to the latest LQ command */ if ((mac_index < 0) || - (tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) || - (tbl_type.bw != rs_ch_width_from_mac_flags(mac_flags)) || - (tbl_type.ant_type != info->status.antenna) || - (!!(tx_rate & RATE_MCS_HT_MSK) != + (rate.sgi != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) || + (rate.bw != rs_ch_width_from_mac_flags(mac_flags)) || + (rate.ant != info->status.antenna) || + (!!(ucode_rate & RATE_MCS_HT_MSK) != !!(mac_flags & IEEE80211_TX_RC_MCS)) || - (!!(tx_rate & RATE_MCS_VHT_MSK) != + (!!(ucode_rate & RATE_MCS_VHT_MSK) != !!(mac_flags & IEEE80211_TX_RC_VHT_MCS)) || - (!!(tx_rate & RATE_HT_MCS_GF_MSK) != + (!!(ucode_rate & RATE_HT_MCS_GF_MSK) != !!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD)) || - (rs_index != mac_index)) { + (rate.index != mac_index)) { IWL_DEBUG_RATE(mvm, "initial rate %d does not match %d (0x%x)\n", - mac_index, rs_index, tx_rate); + mac_index, rate.index, ucode_rate); /* * Since rates mis-match, the last LQ command may have failed. * After IWL_MISSED_RATE_MAX mis-matches, resync the uCode with @@ -857,28 +857,23 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, lq_sta->missed_rate_counter = 0; /* Figure out if rate scale algorithm is in active or search table */ - if (table_type_matches(&tbl_type, - &(lq_sta->lq_info[lq_sta->active_tbl]))) { + if (rs_rate_match(&rate, + &(lq_sta->lq_info[lq_sta->active_tbl].rate))) { curr_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); other_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); - } else if (table_type_matches( - &tbl_type, &lq_sta->lq_info[1 - lq_sta->active_tbl])) { + } else if (rs_rate_match(&rate, + &lq_sta->lq_info[1 - lq_sta->active_tbl].rate)) { curr_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); other_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); } else { IWL_DEBUG_RATE(mvm, "Neither active nor search matches tx rate\n"); tmp_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - IWL_DEBUG_RATE(mvm, "active- lq:%x, ant:%x, SGI:%d\n", - tmp_tbl->lq_type, tmp_tbl->ant_type, - tmp_tbl->is_SGI); + rs_dump_rate(mvm, &tmp_tbl->rate, "ACTIVE"); tmp_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); - IWL_DEBUG_RATE(mvm, "search- lq:%x, ant:%x, SGI:%d\n", - tmp_tbl->lq_type, tmp_tbl->ant_type, - tmp_tbl->is_SGI); - IWL_DEBUG_RATE(mvm, "actual- lq:%x, ant:%x, SGI:%d\n", - tbl_type.lq_type, tbl_type.ant_type, - tbl_type.is_SGI); + rs_dump_rate(mvm, &tmp_tbl->rate, "SEARCH"); + rs_dump_rate(mvm, &rate, "ACTUAL"); + /* * no matching table found, let's by-pass the data collection * and continue to perform rate scale to find the rate table @@ -895,10 +890,9 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, * first index into rate scale table. */ if (info->flags & IEEE80211_TX_STAT_AMPDU) { - tx_rate = le32_to_cpu(table->rs_table[0]); - rs_get_tbl_info_from_mcs(tx_rate, info->band, &tbl_type, - &rs_index); - rs_collect_tx_data(curr_tbl, rs_index, + ucode_rate = le32_to_cpu(table->rs_table[0]); + rs_rate_from_ucode_rate(ucode_rate, info->band, &rate); + rs_collect_tx_data(curr_tbl, rate.index, info->status.ampdu_len, info->status.ampdu_ack_len); @@ -920,20 +914,19 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK); /* Collect data for each rate used during failed TX attempts */ for (i = 0; i <= retries; ++i) { - tx_rate = le32_to_cpu(table->rs_table[i]); - rs_get_tbl_info_from_mcs(tx_rate, info->band, - &tbl_type, &rs_index); + ucode_rate = le32_to_cpu(table->rs_table[i]); + rs_rate_from_ucode_rate(ucode_rate, info->band, &rate); /* * Only collect stats if retried rate is in the same RS * table as active/search. */ - if (table_type_matches(&tbl_type, curr_tbl)) + if (rs_rate_match(&rate, &curr_tbl->rate)) tmp_tbl = curr_tbl; - else if (table_type_matches(&tbl_type, other_tbl)) + else if (rs_rate_match(&rate, &other_tbl->rate)) tmp_tbl = other_tbl; else continue; - rs_collect_tx_data(tmp_tbl, rs_index, 1, + rs_collect_tx_data(tmp_tbl, rate.index, 1, i < retries ? 0 : legacy_success); } @@ -944,7 +937,7 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband, } } /* The last TX rate is cached in lq_sta; it's set in if/else above */ - lq_sta->last_rate_n_flags = tx_rate; + lq_sta->last_rate_n_flags = ucode_rate; done: /* See if there's a better rate or modulation mode to try. */ if (sta && sta->supp_rates[sband->band]) @@ -988,16 +981,17 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, { /* Used to choose among HT tables */ s32 (*ht_tbl_pointer)[IWL_RATE_COUNT]; + struct rs_rate *rate = &tbl->rate; /* Check for invalid LQ type */ - if (WARN_ON_ONCE(!is_legacy(tbl->lq_type) && !is_ht(tbl->lq_type) && - !(is_vht(tbl->lq_type)))) { + if (WARN_ON_ONCE(!is_legacy(rate) && !is_ht(rate) && + !(is_vht(rate)))) { tbl->expected_tpt = expected_tpt_legacy; return; } /* Legacy rates have only one table */ - if (is_legacy(tbl->lq_type)) { + if (is_legacy(rate)) { tbl->expected_tpt = expected_tpt_legacy; return; } @@ -1006,8 +1000,8 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, /* Choose among many HT tables depending on number of streams * (SISO/MIMO2), channel width (20/40/80), SGI, and aggregation * status */ - if (is_siso(tbl->lq_type)) { - switch (tbl->bw) { + if (is_siso(rate)) { + switch (rate->bw) { case RATE_MCS_CHAN_WIDTH_20: ht_tbl_pointer = expected_tpt_siso_20MHz; break; @@ -1020,8 +1014,8 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, default: WARN_ON_ONCE(1); } - } else if (is_mimo2(tbl->lq_type)) { - switch (tbl->bw) { + } else if (is_mimo2(rate)) { + switch (rate->bw) { case RATE_MCS_CHAN_WIDTH_20: ht_tbl_pointer = expected_tpt_mimo2_20MHz; break; @@ -1038,11 +1032,11 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta, WARN_ON_ONCE(1); } - if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */ + if (!rate->sgi && !lq_sta->is_agg) /* Normal */ tbl->expected_tpt = ht_tbl_pointer[0]; - else if (tbl->is_SGI && !lq_sta->is_agg) /* SGI */ + else if (rate->sgi && !lq_sta->is_agg) /* SGI */ tbl->expected_tpt = ht_tbl_pointer[1]; - else if (!tbl->is_SGI && lq_sta->is_agg) /* AGG */ + else if (!rate->sgi && lq_sta->is_agg) /* AGG */ tbl->expected_tpt = ht_tbl_pointer[2]; else /* AGG+SGI */ tbl->expected_tpt = ht_tbl_pointer[3]; @@ -1082,7 +1076,7 @@ static s32 rs_get_best_rate(struct iwl_mvm *mvm, while (1) { high_low = rs_get_adjacent_rate(mvm, rate, rate_mask, - tbl->lq_type); + tbl->rate.type); low = high_low & 0xff; high = (high_low >> 8) & 0xff; @@ -1163,30 +1157,29 @@ static inline void rs_move_next_action(struct iwl_scale_tbl_info *tbl, tbl->action = (tbl->action + 1) % (last_action + 1); } -static void rs_set_bw_from_sta(struct iwl_scale_tbl_info *tbl, - struct ieee80211_sta *sta) +static u32 rs_bw_from_sta_bw(struct ieee80211_sta *sta) { if (sta->bandwidth >= IEEE80211_STA_RX_BW_80) - tbl->bw = RATE_MCS_CHAN_WIDTH_80; + return RATE_MCS_CHAN_WIDTH_80; else if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) - tbl->bw = RATE_MCS_CHAN_WIDTH_40; - else - tbl->bw = RATE_MCS_CHAN_WIDTH_20; + return RATE_MCS_CHAN_WIDTH_40; + + return RATE_MCS_CHAN_WIDTH_20; } -static bool rs_sgi_allowed(struct iwl_scale_tbl_info *tbl, +static bool rs_sgi_allowed(struct rs_rate *rate, struct ieee80211_sta *sta) { struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; - if (is_ht20(tbl) && (ht_cap->cap & + if (is_ht20(rate) && (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)) return true; - if (is_ht40(tbl) && (ht_cap->cap & + if (is_ht40(rate) && (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)) return true; - if (is_ht80(tbl) && (vht_cap->cap & + if (is_ht80(rate) && (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)) return true; @@ -1202,7 +1195,7 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm, struct iwl_scale_tbl_info *tbl, int index) { u16 rate_mask; - s32 rate; + s32 rate_idx; if (!sta->ht_cap.ht_supported) return -1; @@ -1216,24 +1209,26 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm, IWL_DEBUG_RATE(mvm, "LQ: try to switch to MIMO2\n"); - tbl->lq_type = lq_sta->is_vht ? LQ_VHT_MIMO2 : LQ_HT_MIMO2; + tbl->rate.type = lq_sta->is_vht ? LQ_VHT_MIMO2 : LQ_HT_MIMO2; tbl->action = 0; tbl->max_search = IWL_MAX_SEARCH; rate_mask = lq_sta->active_mimo2_rate; - rs_set_bw_from_sta(tbl, sta); + tbl->rate.bw = rs_bw_from_sta_bw(sta); rs_set_expected_tpt_table(lq_sta, tbl); - rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index); + rate_idx = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index); IWL_DEBUG_RATE(mvm, "LQ: MIMO2 best rate %d mask %X\n", - rate, rate_mask); - if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { + rate_idx, rate_mask); + if ((rate_idx == IWL_RATE_INVALID) || !((1 << rate_idx) & rate_mask)) { IWL_DEBUG_RATE(mvm, "Can't switch with index %d rate mask %x\n", - rate, rate_mask); + rate_idx, rate_mask); return -1; } - tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate); + + tbl->rate.index = rate_idx; + tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate); IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n", tbl->current_rate); @@ -1249,30 +1244,34 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm, struct iwl_scale_tbl_info *tbl, int index) { u16 rate_mask; - s32 rate; + s32 rate_idx; if (!sta->ht_cap.ht_supported) return -1; IWL_DEBUG_RATE(mvm, "LQ: try to switch to SISO\n"); - tbl->lq_type = lq_sta->is_vht ? LQ_VHT_SISO : LQ_HT_SISO; + tbl->rate.type = lq_sta->is_vht ? LQ_VHT_SISO : LQ_HT_SISO; tbl->action = 0; tbl->max_search = IWL_MAX_SEARCH; rate_mask = lq_sta->active_siso_rate; - rs_set_bw_from_sta(tbl, sta); + tbl->rate.bw = rs_bw_from_sta_bw(sta); rs_set_expected_tpt_table(lq_sta, tbl); - rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index); + rate_idx = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index); - IWL_DEBUG_RATE(mvm, "LQ: get best rate %d mask %X\n", rate, rate_mask); - if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) { + IWL_DEBUG_RATE(mvm, "LQ: get best rate %d mask %X\n", + rate_idx, rate_mask); + if ((rate_idx == IWL_RATE_INVALID) || !((1 << rate_idx) & rate_mask)) { IWL_DEBUG_RATE(mvm, "can not switch with index %d rate mask %x\n", - rate, rate_mask); + rate_idx, rate_mask); return -1; } - tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate); + + tbl->rate.index = rate_idx; + tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate); + IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n", tbl->current_rate); return 0; @@ -1289,6 +1288,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, 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 rs_rate *rate = &search_tbl->rate; struct iwl_rate_scale_data *window = &(tbl->win[index]); u32 sz = (sizeof(struct iwl_scale_tbl_info) - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); @@ -1317,7 +1317,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, if (rs_toggle_antenna(valid_tx_ant, &search_tbl->current_rate, - search_tbl)) { + &search_tbl->rate)) { update_search_tbl_counter = 1; rs_set_expected_tpt_table(lq_sta, search_tbl); goto out; @@ -1328,7 +1328,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, /* Set up search table to try SISO */ memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; + rate->sgi = false; ret = rs_switch_to_siso(mvm, lq_sta, sta, search_tbl, index); if (!ret) { @@ -1342,12 +1342,11 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, /* Set up search table to try MIMO */ memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - - search_tbl->ant_type = ANT_AB; + rate->sgi = false; + rate->ant = ANT_AB; if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) + rate->ant)) break; ret = rs_switch_to_mimo2(mvm, lq_sta, sta, @@ -1365,7 +1364,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm, if (tbl->action == start_action) break; } - search_tbl->lq_type = LQ_NONE; + rate->type = LQ_NONE; return 0; out: @@ -1386,6 +1385,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, 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 rs_rate *rate = &search_tbl->rate; struct iwl_rate_scale_data *window = &(tbl->win[index]); u32 sz = (sizeof(struct iwl_scale_tbl_info) - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); @@ -1416,7 +1416,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, memcpy(search_tbl, tbl, sz); if (rs_toggle_antenna(valid_tx_ant, &search_tbl->current_rate, - search_tbl)) { + rate)) { update_search_tbl_counter = 1; goto out; } @@ -1424,12 +1424,11 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, case IWL_SISO_SWITCH_MIMO2: IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO2\n"); memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - - search_tbl->ant_type = ANT_AB; + rate->sgi = false; + rate->ant = ANT_AB; if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) + rate->ant)) break; ret = rs_switch_to_mimo2(mvm, lq_sta, sta, @@ -1438,21 +1437,22 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, goto out; break; case IWL_SISO_SWITCH_GI: - if (!rs_sgi_allowed(tbl, sta)) + if (!rs_sgi_allowed(rate, sta)) break; IWL_DEBUG_RATE(mvm, "LQ: SISO toggle SGI/NGI\n"); memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = !tbl->is_SGI; + rate->sgi = !tbl->rate.sgi; rs_set_expected_tpt_table(lq_sta, search_tbl); - if (tbl->is_SGI) { + if (tbl->rate.sgi) { s32 tpt = lq_sta->last_tpt / 100; if (tpt >= search_tbl->expected_tpt[index]) break; } + rate->index = index; search_tbl->current_rate = - rate_n_flags_from_tbl(mvm, search_tbl, index); + ucode_rate_from_rs_rate(mvm, rate); update_search_tbl_counter = 1; goto out; default: @@ -1463,7 +1463,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm, if (tbl->action == start_action) break; } - search_tbl->lq_type = LQ_NONE; + rate->type = LQ_NONE; return 0; out: @@ -1485,6 +1485,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, 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 rs_rate *rate = &search_tbl->rate; u32 sz = (sizeof(struct iwl_scale_tbl_info) - (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT)); u8 start_action; @@ -1509,12 +1510,12 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, memcpy(search_tbl, tbl, sz); if (tbl->action == IWL_MIMO2_SWITCH_SISO_A) - search_tbl->ant_type = ANT_A; + rate->ant = ANT_A; else /* tbl->action == IWL_MIMO2_SWITCH_SISO_B */ - search_tbl->ant_type = ANT_B; + rate->ant = ANT_B; if (!rs_is_valid_ant(valid_tx_ant, - search_tbl->ant_type)) + rate->ant)) break; ret = rs_switch_to_siso(mvm, lq_sta, sta, @@ -1525,14 +1526,14 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, break; case IWL_MIMO2_SWITCH_GI: - if (!rs_sgi_allowed(tbl, sta)) + if (!rs_sgi_allowed(rate, sta)) break; IWL_DEBUG_RATE(mvm, "LQ: MIMO2 toggle SGI/NGI\n"); /* Set up new search table for MIMO2 */ memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = !tbl->is_SGI; + rate->sgi = !tbl->rate.sgi; rs_set_expected_tpt_table(lq_sta, search_tbl); /* * If active table already uses the fastest possible @@ -1540,13 +1541,14 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, * and it's working well, there's no need to look * for a better type of modulation! */ - if (tbl->is_SGI) { + if (tbl->rate.sgi) { s32 tpt = lq_sta->last_tpt / 100; if (tpt >= search_tbl->expected_tpt[index]) break; } + rate->index = index; search_tbl->current_rate = - rate_n_flags_from_tbl(mvm, search_tbl, index); + ucode_rate_from_rs_rate(mvm, rate); update_search_tbl_counter = 1; goto out; default: @@ -1557,7 +1559,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm, if (tbl->action == start_action) break; } - search_tbl->lq_type = LQ_NONE; + rate->type = LQ_NONE; return 0; out: lq_sta->search_better_tbl = 1; @@ -1657,14 +1659,12 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search) static void rs_update_rate_tbl(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct iwl_lq_sta *lq_sta, - struct iwl_scale_tbl_info *tbl, - int index) + struct rs_rate *rate) { - u32 rate; + u32 ucode_rate; - /* Update uCode's rate table. */ - rate = rate_n_flags_from_tbl(mvm, tbl, index); - rs_fill_link_cmd(mvm, sta, lq_sta, rate); + ucode_rate = ucode_rate_from_rs_rate(mvm, rate); + rs_fill_link_cmd(mvm, sta, lq_sta, ucode_rate); iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false); } @@ -1716,6 +1716,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, u8 prev_agg = lq_sta->is_agg; struct iwl_mvm_sta *sta_priv = (void *)sta->drv_priv; struct iwl_mvm_tid_data *tid_data; + struct rs_rate *rate; /* Send management frames and NO_ACK data using lowest rate. */ /* TODO: this could probably be improved.. */ @@ -1748,6 +1749,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, active_tbl = 1 - lq_sta->active_tbl; tbl = &(lq_sta->lq_info[active_tbl]); + rate = &tbl->rate; if (prev_agg != lq_sta->is_agg) { IWL_DEBUG_RATE(mvm, @@ -1760,10 +1762,10 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, index = lq_sta->last_txrate_idx; /* rates available for this association, and for modulation mode */ - rate_mask = rs_get_supported_rates(lq_sta, hdr, tbl->lq_type); + rate_mask = rs_get_supported_rates(lq_sta, hdr, rate); /* mask with station rate restriction */ - if (is_legacy(tbl->lq_type)) { + if (is_legacy(rate)) { if (lq_sta->band == IEEE80211_BAND_5GHZ) /* supp_rates has no CCK bits in A mode */ rate_scale_index_msk = (u16) (rate_mask & @@ -1783,12 +1785,13 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, IWL_ERR(mvm, "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; + rate->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); - rs_update_rate_tbl(mvm, sta, lq_sta, tbl, index); + tbl->rate.index = index; + rs_update_rate_tbl(mvm, sta, lq_sta, &tbl->rate); } return; } @@ -1825,7 +1828,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, (window->success_counter < IWL_RATE_MIN_SUCCESS_TH)) { IWL_DEBUG_RATE(mvm, "(%s: %d): Test Window: succ %d total %d\n", - rs_pretty_lq_type(tbl->lq_type), + rs_pretty_lq_type(rate->type), index, window->success_counter, window->counter); /* Can't calculate this yet; not enough history */ @@ -1858,7 +1861,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, window->average_tpt, lq_sta->last_tpt); - if (!is_legacy(tbl->lq_type)) + if (!is_legacy(rate)) lq_sta->enable_counter = 1; /* Swap tables; "search" becomes "active" */ @@ -1874,7 +1877,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, lq_sta->last_tpt); /* Nullify "search" table */ - tbl->lq_type = LQ_NONE; + rate->type = LQ_NONE; /* Revert to "active" table */ active_tbl = lq_sta->active_tbl; @@ -1898,7 +1901,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, /* (Else) not in search of better modulation mode, try for better * starting rate, while staying in this mode. */ high_low = rs_get_adjacent_rate(mvm, index, rate_scale_index_msk, - tbl->lq_type); + rate->type); low = high_low & 0xff; high = (high_low >> 8) & 0xff; @@ -1918,8 +1921,8 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, IWL_DEBUG_RATE(mvm, "(%s: %d): cur_tpt %d SR %d low %d high %d low_tpt %d high_tpt %d\n", - rs_pretty_lq_type(tbl->lq_type), index, current_tpt, - sr, low, high, low_tpt, high_tpt); + rs_pretty_lq_type(rate->type), index, current_tpt, sr, + low, high, low_tpt, high_tpt); scale_action = 0; @@ -2002,7 +2005,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, } /* Force a search in case BT doesn't like us being in MIMO */ - if (is_mimo(tbl->lq_type) && + if (is_mimo(rate) && !iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta)) { IWL_DEBUG_RATE(mvm, "BT Coex forbids MIMO. Search for new config\n"); @@ -2041,8 +2044,10 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, lq_update: /* Replace uCode's rate table for the destination station. */ - if (update_lq) - rs_update_rate_tbl(mvm, sta, lq_sta, tbl, index); + if (update_lq) { + tbl->rate.index = index; + rs_update_rate_tbl(mvm, sta, lq_sta, &tbl->rate); + } rs_stay_in_table(lq_sta, false); @@ -2063,11 +2068,11 @@ lq_update: window->counter); /* Select a new "search" modulation mode to try. * If one is found, set up the new "search" table. */ - if (is_legacy(tbl->lq_type)) + if (is_legacy(&tbl->rate)) rs_move_legacy_other(mvm, lq_sta, sta, index); - else if (is_siso(tbl->lq_type)) + else if (is_siso(&tbl->rate)) rs_move_siso_to_other(mvm, lq_sta, sta, index); - else if (is_mimo2(tbl->lq_type)) + else if (is_mimo2(&tbl->rate)) rs_move_mimo2_to_other(mvm, lq_sta, sta, index); else WARN_ON_ONCE(1); @@ -2086,7 +2091,7 @@ lq_update: "Switch to SEARCH TABLE: " "mcs %X (%s: %d)\n", tbl->current_rate, - rs_pretty_lq_type(tbl->lq_type), + rs_pretty_lq_type(tbl->rate.type), index); rs_fill_link_cmd(mvm, sta, lq_sta, tbl->current_rate); iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false); @@ -2102,7 +2107,7 @@ lq_update: * 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) && !sta->ht_cap.ht_supported && + if (is_legacy(&tbl1->rate) && !sta->ht_cap.ht_supported && lq_sta->action_counter > tbl1->max_search) { IWL_DEBUG_RATE(mvm, "LQ: STAY in legacy table\n"); rs_set_stay_in_table(mvm, 1, lq_sta); @@ -2130,7 +2135,8 @@ lq_update: } out: - tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, index); + tbl->rate.index = index; + tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate); lq_sta->last_txrate_idx = index; } @@ -2155,9 +2161,9 @@ static void rs_initialize_lq(struct iwl_mvm *mvm, bool init) { struct iwl_scale_tbl_info *tbl; - int rate_idx; + struct rs_rate *rate; int i; - u32 rate; + u32 ucode_rate; u8 active_tbl = 0; u8 valid_tx_ant; @@ -2174,25 +2180,26 @@ static void rs_initialize_lq(struct iwl_mvm *mvm, active_tbl = 1 - lq_sta->active_tbl; tbl = &(lq_sta->lq_info[active_tbl]); + rate = &tbl->rate; if ((i < 0) || (i >= IWL_RATE_COUNT)) i = 0; - rate = iwl_rates[i].plcp; - tbl->ant_type = first_antenna(valid_tx_ant); - rate |= tbl->ant_type << RATE_MCS_ANT_POS; + ucode_rate = iwl_rates[i].plcp; + rate->ant = first_antenna(valid_tx_ant); + ucode_rate |= rate->ant << RATE_MCS_ANT_POS; if (i >= IWL_FIRST_CCK_RATE && i <= IWL_LAST_CCK_RATE) - rate |= RATE_MCS_CCK_MSK; + ucode_rate |= RATE_MCS_CCK_MSK; - rs_get_tbl_info_from_mcs(rate, band, tbl, &rate_idx); - if (!rs_is_valid_ant(valid_tx_ant, tbl->ant_type)) - rs_toggle_antenna(valid_tx_ant, &rate, tbl); + rs_rate_from_ucode_rate(ucode_rate, band, rate); + if (!rs_is_valid_ant(valid_tx_ant, rate->ant)) + rs_toggle_antenna(valid_tx_ant, &ucode_rate, rate); - rate = rate_n_flags_from_tbl(mvm, tbl, rate_idx); - tbl->current_rate = rate; + ucode_rate = ucode_rate_from_rs_rate(mvm, rate); + tbl->current_rate = ucode_rate; rs_set_expected_tpt_table(lq_sta, tbl); - rs_fill_link_cmd(NULL, NULL, lq_sta, rate); + rs_fill_link_cmd(NULL, NULL, lq_sta, ucode_rate); /* TODO restore station should remember the lq cmd */ iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, init); } @@ -2435,9 +2442,8 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct iwl_lq_sta *lq_sta, u32 new_rate) { - struct iwl_scale_tbl_info tbl_type; + struct rs_rate rate; int index = 0; - int rate_idx; int repeat_rate = 0; u8 ant_toggle_cnt = 0; u8 use_ht_possible = 1; @@ -2447,12 +2453,10 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, /* Override starting rate (index 0) if needed for debug purposes */ rs_dbgfs_set_mcs(lq_sta, &new_rate); - /* Interpret new_rate (rate_n_flags) */ - rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, - &tbl_type, &rate_idx); + rs_rate_from_ucode_rate(new_rate, lq_sta->band, &rate); /* How many times should we repeat the initial rate? */ - if (is_legacy(tbl_type.lq_type)) { + if (is_legacy(&rate)) { ant_toggle_cnt = 1; repeat_rate = IWL_NUMBER_TRY; } else { @@ -2460,15 +2464,15 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, LINK_QUAL_AGG_DISABLE_START_DEF - 1); } - lq_cmd->mimo_delim = is_mimo(tbl_type.lq_type) ? 1 : 0; + lq_cmd->mimo_delim = is_mimo(&rate) ? 1 : 0; /* Fill 1st table entry (index 0) */ lq_cmd->rs_table[index] = cpu_to_le32(new_rate); - if (num_of_ant(tbl_type.ant_type) == 1) - lq_cmd->single_stream_ant_msk = tbl_type.ant_type; - else if (num_of_ant(tbl_type.ant_type) == 2) - lq_cmd->dual_stream_ant_msk = tbl_type.ant_type; + if (num_of_ant(rate.ant) == 1) + lq_cmd->single_stream_ant_msk = rate.ant; + else if (num_of_ant(rate.ant) == 2) + lq_cmd->dual_stream_ant_msk = rate.ant; /* otherwise we don't modify the existing value */ index++; @@ -2482,12 +2486,12 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, * For legacy IWL_NUMBER_TRY == 1, this loop will not execute. * For HT IWL_HT_NUMBER_TRY == 3, this executes twice. */ while (repeat_rate > 0 && (index < LINK_QUAL_MAX_RETRY_NUM)) { - if (is_legacy(tbl_type.lq_type)) { + if (is_legacy(&rate)) { if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) ant_toggle_cnt++; else if (mvm && rs_toggle_antenna(valid_tx_ant, - &new_rate, &tbl_type)) + &new_rate, &rate)) ant_toggle_cnt = 1; } @@ -2501,26 +2505,25 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm, index++; } - rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type, - &rate_idx); + rs_rate_from_ucode_rate(new_rate, lq_sta->band, &rate); /* Indicate to uCode which entries might be MIMO. * If initial rate was MIMO, this will finally end up * as (IWL_HT_NUMBER_TRY * 2), after 2nd pass, otherwise 0. */ - if (is_mimo(tbl_type.lq_type)) + if (is_mimo(&rate)) lq_cmd->mimo_delim = index; /* Get next rate */ - new_rate = rs_get_lower_rate(lq_sta, &tbl_type, rate_idx, + new_rate = rs_get_lower_rate(lq_sta, &rate, rate.index, use_ht_possible); /* How many times should we repeat the next rate? */ - if (is_legacy(tbl_type.lq_type)) { + if (is_legacy(&rate)) { if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) ant_toggle_cnt++; else if (mvm && rs_toggle_antenna(valid_tx_ant, - &new_rate, &tbl_type)) + &new_rate, &rate)) ant_toggle_cnt = 1; repeat_rate = IWL_NUMBER_TRY; @@ -2629,7 +2632,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, static const char *rs_pretty_lq_type(enum iwl_table_type type) { - static const char * const lq_type[] = { + static const char * const lq_types[] = { [LQ_NONE] = "NONE", [LQ_LEGACY_A] = "LEGACY_A", [LQ_LEGACY_G] = "LEGACY_G", @@ -2642,10 +2645,10 @@ static const char *rs_pretty_lq_type(enum iwl_table_type type) if (type < LQ_NONE || type >= LQ_MAX) return "UNKNOWN"; - return lq_type[type]; + return lq_types[type]; } -static int rs_pretty_print_rate(char *buf, const u32 rate) +static const char *rs_pretty_ant(u8 ant) { static const char * const ant_name[] = { [ANT_NONE] = "None", @@ -2658,6 +2661,15 @@ static int rs_pretty_print_rate(char *buf, const u32 rate) [ANT_ABC] = "ABC", }; + if (ant > ANT_ABC) + return "UNKNOWN"; + + return ant_name[ant]; +} + +static int rs_pretty_print_rate(char *buf, const u32 rate) +{ + char *type, *bw; u8 mcs = 0, nss = 0; u8 ant = (rate & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS; @@ -2667,7 +2679,7 @@ static int rs_pretty_print_rate(char *buf, const u32 rate) int index = iwl_hwrate_to_plcp_idx(rate); return sprintf(buf, "Legacy | ANT: %s Rate: %s Mbps\n", - ant_name[ant], iwl_rate_mcs[index].mbps); + rs_pretty_ant(ant), iwl_rate_mcs[index].mbps); } if (rate & RATE_MCS_VHT_MSK) { @@ -2700,7 +2712,7 @@ static int rs_pretty_print_rate(char *buf, const u32 rate) } return sprintf(buf, "%s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s%s\n", - type, ant_name[ant], bw, mcs, nss, + type, rs_pretty_ant(ant), bw, mcs, nss, (rate & RATE_MCS_SGI_MSK) ? "SGI " : "NGI ", (rate & RATE_MCS_STBC_MSK) ? "STBC " : "", (rate & RATE_MCS_LDPC_MSK) ? "LDPC " : "", @@ -2719,7 +2731,7 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, struct iwl_lq_sta *lq_sta = file->private_data; struct iwl_mvm *mvm; struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - + struct rs_rate *rate = &tbl->rate; mvm = lq_sta->drv; buff = kmalloc(2048, GFP_KERNEL); if (!buff) @@ -2736,17 +2748,17 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, (iwl_fw_valid_tx_ant(mvm->fw) & ANT_B) ? "ANT_B," : "", (iwl_fw_valid_tx_ant(mvm->fw) & ANT_C) ? "ANT_C" : ""); desc += sprintf(buff+desc, "lq type %s\n", - (is_legacy(tbl->lq_type)) ? "legacy" : - is_vht(tbl->lq_type) ? "VHT" : "HT"); - if (!is_legacy(tbl->lq_type)) { + (is_legacy(rate)) ? "legacy" : + is_vht(rate) ? "VHT" : "HT"); + if (!is_legacy(rate)) { desc += sprintf(buff+desc, " %s", - (is_siso(tbl->lq_type)) ? "SISO" : "MIMO2"); + (is_siso(rate)) ? "SISO" : "MIMO2"); desc += sprintf(buff+desc, " %s", - (is_ht20(tbl)) ? "20MHz" : - (is_ht40(tbl)) ? "40MHz" : - (is_ht80(tbl)) ? "80Mhz" : "BAD BW"); + (is_ht20(rate)) ? "20MHz" : + (is_ht40(rate)) ? "40MHz" : + (is_ht80(rate)) ? "80Mhz" : "BAD BW"); desc += sprintf(buff+desc, " %s %s\n", - (tbl->is_SGI) ? "SGI" : "NGI", + (rate->sgi) ? "SGI" : "NGI", (lq_sta->is_agg) ? "AGG on" : ""); } desc += sprintf(buff+desc, "last tx rate=0x%X\n", @@ -2799,6 +2811,7 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file, int i, j; ssize_t ret; struct iwl_scale_tbl_info *tbl; + struct rs_rate *rate; struct iwl_lq_sta *lq_sta = file->private_data; buff = kmalloc(1024, GFP_KERNEL); @@ -2807,15 +2820,16 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file, for (i = 0; i < LQ_SIZE; i++) { tbl = &(lq_sta->lq_info[i]); + rate = &tbl->rate; desc += sprintf(buff+desc, "%s type=%d SGI=%d BW=%s DUP=0\n" "rate=0x%X\n", lq_sta->active_tbl == i ? "*" : "x", - tbl->lq_type, - tbl->is_SGI, - is_ht20(tbl) ? "20Mhz" : - is_ht40(tbl) ? "40Mhz" : - is_ht80(tbl) ? "80Mhz" : "ERR", + rate->type, + rate->sgi, + is_ht20(rate) ? "20Mhz" : + is_ht40(rate) ? "40Mhz" : + is_ht80(rate) ? "80Mhz" : "ERR", tbl->current_rate); for (j = 0; j < IWL_RATE_COUNT; j++) { desc += sprintf(buff+desc, |