static void rate_control_pid_get_rate(void *priv, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *priv_sta, struct sk_buff *skb, struct rate_selection *sel) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct rc_pid_sta_info *spinfo = priv_sta; int rateidx; u16 fc; /* Send management frames and broadcast/multicast data using lowest * rate. */ fc = le16_to_cpu(hdr->frame_control); if (!sta || !spinfo || (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA || is_multicast_ether_addr(hdr->addr1)) { sel->rate_idx = rate_lowest_index(sband, sta); return; } rateidx = spinfo->txrate_idx; if (rateidx >= sband->n_bitrates) rateidx = sband->n_bitrates - 1; sel->rate_idx = rateidx; #ifdef CONFIG_MAC80211_DEBUGFS rate_control_pid_event_tx_rate(&spinfo->events, rateidx, sband->bitrates[rateidx].bitrate); #endif }
static void rate_control_pid_rate_init(void *priv, void *priv_sta, struct ieee80211_local *local, struct sta_info *sta) { /* TODO: This routine should consider using RSSI from previous packets * as we need to have IEEE 802.1X auth succeed immediately after assoc.. * Until that method is implemented, we will use the lowest supported * rate as a workaround. */ sta->txrate = rate_lowest_index(local, local->oper_hw_mode, sta); }
static void indra_rate_init(void *priv, struct ieee80211_supported_band *sband, struct cfg80211_chan_def *chandef, struct ieee80211_sta *sta, void *priv_sta) { struct indra_sta_info *ii = priv_sta; struct indra_priv *ip = priv; unsigned int i, n = 0, s, st = 0; u32 rate_flags; ii->sta = sta; ii->lowest_rix = rate_lowest_index(sband, sta); rate_flags = ieee80211_chandef_rate_flags(&ip->hw->conf.chandef); for (i = 0; i < sband->n_bitrates; i++) { struct indra_rate *ir = &ii->r[n]; if (!rate_supported(sta, sband->band, i)) continue; if ((rate_flags & sband->bitrates[i].flags) != rate_flags) continue; n++; memset(ir, 0, sizeof(*ir)); ir->rix = i; ir->last_attempts = 0; ir->last_success = 0; calc_service_time_values(ip,sband->band, ir, &sband->bitrates[i], chandef); initialize_map(ir,&sband->bitrates[i],chandef); } for (i = n; i < sband->n_bitrates; i++) { struct indra_rate *ir = &ii->r[i]; ir->rix = -1; } /* Check if max retry is compliant with constraint on service time */ for (s = 1; s <= ip->max_retry; s++) { struct indra_rate *ir = &ii->r[n-1]; st = st + ir->attempts[s-1]; if (st>ip->st_deadline) { ip->max_retry = s - 1; break; } } ii->n_rates = n; ii->last_snr = 0; ii->flags = 0; ii->tx_flags = 0; indra_update_rates(ip, ii); }
static void rate_control_pid_rate_init(void *priv, void *priv_sta, struct ieee80211_local *local, struct sta_info *sta) { /* TODO: This routine should consider using RSSI from previous packets * as we need to have IEEE 802.1X auth succeed immediately after assoc.. * Until that method is implemented, we will use the lowest supported * rate as a workaround. */ struct ieee80211_supported_band *sband; sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; sta->txrate_idx = rate_lowest_index(local, sband, sta); sta->fail_avg = 0; }
static void rate_control_pid_get_rate(void *priv, struct net_device *dev, struct ieee80211_supported_band *sband, struct sk_buff *skb, struct rate_selection *sel) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; int rateidx; u16 fc; rcu_read_lock(); sta = sta_info_get(local, hdr->addr1); /* Send management frames and broadcast/multicast data using lowest * rate. */ fc = le16_to_cpu(hdr->frame_control); if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA || is_multicast_ether_addr(hdr->addr1) || !sta) { sel->rate_idx = rate_lowest_index(local, sband, sta); rcu_read_unlock(); return; } /* If a forced rate is in effect, select it. */ sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->force_unicast_rateidx > -1) sta->txrate_idx = sdata->force_unicast_rateidx; rateidx = sta->txrate_idx; if (rateidx >= sband->n_bitrates) rateidx = sband->n_bitrates - 1; sta->last_txrate_idx = rateidx; rcu_read_unlock(); sel->rate_idx = rateidx; #ifdef CONFIG_MAC80211_DEBUGFS rate_control_pid_event_tx_rate( &((struct rc_pid_sta_info *) sta->rate_ctrl_priv)->events, rateidx, sband->bitrates[rateidx].bitrate); #endif }
static void rate_control_pid_rate_init(void *priv, void *priv_sta, struct ieee80211_local *local, struct sta_info *sta) { /* TODO: This routine should consider using RSSI from previous packets * as we need to have IEEE 802.1X auth succeed immediately after assoc.. * Until that method is implemented, we will use the lowest supported * rate as a workaround. */ struct ieee80211_supported_band *sband; struct rc_pid_info *pinfo = priv; struct rc_pid_rateinfo *rinfo = pinfo->rinfo; int i, j, tmp; bool s; sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; /* Sort the rates. This is optimized for the most common case (i.e. * almost-sorted CCK+OFDM rates). Kind of bubble-sort with reversed * mapping too. */ for (i = 0; i < sband->n_bitrates; i++) { rinfo[i].index = i; rinfo[i].rev_index = i; if (RC_PID_FAST_START) rinfo[i].diff = 0; else rinfo[i].diff = i * pinfo->norm_offset; } for (i = 1; i < sband->n_bitrates; i++) { s = 0; for (j = 0; j < sband->n_bitrates - i; j++) if (unlikely(sband->bitrates[rinfo[j].index].bitrate > sband->bitrates[rinfo[j + 1].index].bitrate)) { tmp = rinfo[j].index; rinfo[j].index = rinfo[j + 1].index; rinfo[j + 1].index = tmp; rinfo[rinfo[j].index].rev_index = j; rinfo[rinfo[j + 1].index].rev_index = j + 1; s = 1; } if (!s) break; } sta->txrate_idx = rate_lowest_index(local, sband, sta); sta->fail_avg = 0; }
static void rate_control_pid_rate_init(void *priv, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *priv_sta) { struct rc_pid_sta_info *spinfo = priv_sta; struct sta_info *si; /* TODO: This routine should consider using RSSI from previous packets * as we need to have IEEE 802.1X auth succeed immediately after assoc.. * Until that method is implemented, we will use the lowest supported * rate as a workaround. */ spinfo->txrate_idx = rate_lowest_index(sband, sta); /* HACK */ si = container_of(sta, struct sta_info, sta); si->fail_avg = 0; }
static void rate_control_pid_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, struct ieee80211_tx_rate_control *txrc) { struct sk_buff *skb = txrc->skb; struct ieee80211_supported_band *sband = txrc->sband; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct rc_pid_sta_info *spinfo = priv_sta; int rateidx; u16 fc; if (txrc->rts) info->control.rates[0].count = txrc->hw->conf.long_frame_max_tx_count; else info->control.rates[0].count = txrc->hw->conf.short_frame_max_tx_count; /* Send management frames and broadcast/multicast data using lowest * rate. */ fc = le16_to_cpu(hdr->frame_control); if (!sta || !spinfo || (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA || is_multicast_ether_addr(hdr->addr1)) { info->control.rates[0].idx = rate_lowest_index(sband, sta); return; } rateidx = spinfo->txrate_idx; if (rateidx >= sband->n_bitrates) rateidx = sband->n_bitrates - 1; info->control.rates[0].idx = rateidx; #ifdef CONFIG_MAC80211_DEBUGFS rate_control_pid_event_tx_rate(&spinfo->events, rateidx, sband->bitrates[rateidx].bitrate); #endif }
/* * Sets the fields in the Tx cmd that are rate related */ static void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, struct ieee80211_tx_info *info, struct ieee80211_sta *sta, __le16 fc) { u32 rate_flags; int rate_idx; u8 rate_plcp; /* Set retry limit on RTS packets */ tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; /* Set retry limit on DATA packets and Probe Responses*/ if (ieee80211_is_probe_resp(fc)) { tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; tx_cmd->rts_retry_limit = min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); } else if (ieee80211_is_back_req(fc)) { tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; } else { tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; } /* * for data packets, rate info comes from the table inside the fw. This * table is controlled by LINK_QUALITY commands */ if (ieee80211_is_data(fc) && sta) { tx_cmd->initial_rate_index = 0; tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); return; } else if (ieee80211_is_back_req(fc)) { tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); } /* HT rate doesn't make sense for a non data frame */ WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS, "Got an HT rate for a non data frame 0x%x\n", info->control.rates[0].flags); rate_idx = info->control.rates[0].idx; /* if the rate isn't a well known legacy rate, take the lowest one */ if (rate_idx < 0 || rate_idx > IWL_RATE_COUNT_LEGACY) rate_idx = rate_lowest_index( &mvm->nvm_data->bands[info->band], sta); /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ if (info->band == IEEE80211_BAND_5GHZ) rate_idx += IWL_FIRST_OFDM_RATE; /* For 2.4 GHZ band, check that there is no need to remap */ BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); /* Get PLCP rate for tx_cmd->rate_n_flags */ rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx); mvm->mgmt_last_antenna_idx = iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw), mvm->mgmt_last_antenna_idx); rate_flags = BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; /* Set CCK flag as needed */ if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) rate_flags |= RATE_MCS_CCK_MSK; /* Set the rate in the TX cmd */ tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags); }
static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, struct iwl_tx_cmd *tx_cmd, struct ieee80211_tx_info *info, __le16 fc) { u32 rate_flags; int rate_idx; u8 rts_retry_limit; u8 data_retry_limit; u8 rate_plcp; if (priv->shrd->wowlan) { rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; } else { /* Set retry limit on RTS packets */ rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; /* Set retry limit on DATA packets and Probe Responses*/ if (ieee80211_is_probe_resp(fc)) { data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; rts_retry_limit = min(data_retry_limit, rts_retry_limit); } else if (ieee80211_is_back_req(fc)) data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; else data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; } tx_cmd->data_retry_limit = data_retry_limit; tx_cmd->rts_retry_limit = rts_retry_limit; /* DATA packets will use the uCode station table for rate/antenna * selection */ if (ieee80211_is_data(fc)) { tx_cmd->initial_rate_index = 0; tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL if (priv->tm_fixed_rate) { /* * rate overwrite by testmode * we not only send lq command to change rate * we also re-enforce per data pkt base. */ tx_cmd->tx_flags &= ~TX_CMD_FLG_STA_RATE_MSK; memcpy(&tx_cmd->rate_n_flags, &priv->tm_fixed_rate, sizeof(tx_cmd->rate_n_flags)); } #endif return; } /** * If the current TX rate stored in mac80211 has the MCS bit set, it's * not really a TX rate. Thus, we use the lowest supported rate for * this band. Also use the lowest supported rate if the stored rate * index is invalid. */ rate_idx = info->control.rates[0].idx; if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) rate_idx = rate_lowest_index(&priv->bands[info->band], info->control.sta); /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ if (info->band == IEEE80211_BAND_5GHZ) rate_idx += IWL_FIRST_OFDM_RATE; /* Get PLCP rate for tx_cmd->rate_n_flags */ rate_plcp = iwl_rates[rate_idx].plcp; /* Zero out flags for this packet */ rate_flags = 0; /* Set CCK flag as needed */ if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) rate_flags |= RATE_MCS_CCK_MSK; /* Set up antennas */ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist && priv->bt_full_concurrent) { /* operated as 1x1 in full concurrency mode */ priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, first_antenna(hw_params(priv).valid_tx_ant)); } else priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, hw_params(priv).valid_tx_ant); rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); /* Set the rate in the TX cmd */ tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); }
void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, enum ieee80211_band band) { int i, j; struct ieee80211_hw *hw = mvm->hw; struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; struct iwl_mvm_sta *sta_priv; struct iwl_lq_sta *lq_sta; struct ieee80211_supported_band *sband; unsigned long supp; /* must be unsigned long for for_each_set_bit */ sta_priv = (struct iwl_mvm_sta *)sta->drv_priv; lq_sta = &sta_priv->lq_sta; sband = hw->wiphy->bands[band]; lq_sta->lq.sta_id = sta_priv->sta_id; 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]); lq_sta->flush_timer = 0; lq_sta->supp_rates = sta->supp_rates[sband->band]; 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(mvm, "LQ: *** rate scale station global init for station %d ***\n", sta_priv->sta_id); /* 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->max_rate_idx = -1; lq_sta->missed_rate_counter = IWL_MISSED_RATE_MAX; lq_sta->is_green = rs_use_green(sta); lq_sta->band = sband->band; /* * active legacy rates as per supported rates bitmap */ supp = sta->supp_rates[sband->band]; lq_sta->active_legacy_rate = 0; for_each_set_bit(i, &supp, BITS_PER_LONG) lq_sta->active_legacy_rate |= BIT(sband->bitrates[i].hw_value); /* * 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 = 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 = 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 = 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(mvm, "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 overridden later */ lq_sta->lq.single_stream_ant_msk = first_antenna(iwl_fw_valid_tx_ant(mvm->fw)); lq_sta->lq.dual_stream_ant_msk = iwl_fw_valid_tx_ant(mvm->fw) & ~first_antenna(iwl_fw_valid_tx_ant(mvm->fw)); if (!lq_sta->lq.dual_stream_ant_msk) { lq_sta->lq.dual_stream_ant_msk = ANT_AB; } else if (num_of_ant(iwl_fw_valid_tx_ant(mvm->fw)) == 2) { lq_sta->lq.dual_stream_ant_msk = iwl_fw_valid_tx_ant(mvm->fw); } /* as default allow aggregation for all tids */ lq_sta->tx_agg_tid_en = IWL_AGG_ALL_TID; lq_sta->drv = mvm; /* 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; lq_sta->is_agg = 0; #ifdef CONFIG_MAC80211_DEBUGFS lq_sta->dbg_fixed_rate = 0; #endif rs_initialize_lq(mvm, sta, lq_sta, band); }