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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | // SPDX-License-Identifier: GPL-2.0-only /* * This file is part of wl18xx * * Copyright (C) 2011 Texas Instruments Inc. */ #include "../wlcore/wlcore.h" #include "../wlcore/cmd.h" #include "../wlcore/debug.h" #include "../wlcore/acx.h" #include "../wlcore/tx.h" #include "wl18xx.h" #include "tx.h" static void wl18xx_get_last_tx_rate(struct wl1271 *wl, struct ieee80211_vif *vif, u8 band, struct ieee80211_tx_rate *rate, u8 hlid) { u8 fw_rate = wl->links[hlid].fw_rate_idx; if (fw_rate > CONF_HW_RATE_INDEX_MAX) { wl1271_error("last Tx rate invalid: %d", fw_rate); rate->idx = 0; rate->flags = 0; return; } if (fw_rate <= CONF_HW_RATE_INDEX_54MBPS) { rate->idx = fw_rate; if (band == NL80211_BAND_5GHZ) rate->idx -= CONF_HW_RATE_INDEX_6MBPS; rate->flags = 0; } else { rate->flags = IEEE80211_TX_RC_MCS; rate->idx = fw_rate - CONF_HW_RATE_INDEX_MCS0; /* SGI modifier is counted as a separate rate */ if (fw_rate >= CONF_HW_RATE_INDEX_MCS7_SGI) (rate->idx)--; if (fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI) (rate->idx)--; /* this also covers the 40Mhz SGI case (= MCS15) */ if (fw_rate == CONF_HW_RATE_INDEX_MCS7_SGI || fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI) rate->flags |= IEEE80211_TX_RC_SHORT_GI; if (fw_rate > CONF_HW_RATE_INDEX_MCS7_SGI && vif) { struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif); if (wlvif->channel_type == NL80211_CHAN_HT40MINUS || wlvif->channel_type == NL80211_CHAN_HT40PLUS) { /* adjustment needed for range 0-7 */ rate->idx -= 8; rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; } } } } static void wl18xx_tx_complete_packet(struct wl1271 *wl, u8 tx_stat_byte) { struct ieee80211_tx_info *info; struct sk_buff *skb; int id = tx_stat_byte & WL18XX_TX_STATUS_DESC_ID_MASK; bool tx_success; struct wl1271_tx_hw_descr *tx_desc; /* check for id legality */ if (unlikely(id >= wl->num_tx_desc || wl->tx_frames[id] == NULL)) { wl1271_warning("illegal id in tx completion: %d", id); return; } /* a zero bit indicates Tx success */ tx_success = !(tx_stat_byte & BIT(WL18XX_TX_STATUS_STAT_BIT_IDX)); skb = wl->tx_frames[id]; info = IEEE80211_SKB_CB(skb); tx_desc = (struct wl1271_tx_hw_descr *)skb->data; if (wl12xx_is_dummy_packet(wl, skb)) { wl1271_free_tx_id(wl, id); return; } /* update the TX status info */ if (tx_success && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) info->flags |= IEEE80211_TX_STAT_ACK; /* * first pass info->control.vif while it's valid, and then fill out * the info->status structures */ wl18xx_get_last_tx_rate(wl, info->control.vif, info->band, &info->status.rates[0], tx_desc->hlid); info->status.rates[0].count = 1; /* no data about retries */ info->status.ack_signal = -1; if (!tx_success) wl->stats.retry_count++; /* * TODO: update sequence number for encryption? seems to be * unsupported for now. needed for recovery with encryption. */ /* remove private header from packet */ skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); /* remove TKIP header space if present */ if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && info->control.hw_key && info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { int hdrlen = ieee80211_get_hdrlen_from_skb(skb); memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data, hdrlen); skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); } wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p success %d", id, skb, tx_success); /* return the packet to the stack */ skb_queue_tail(&wl->deferred_tx_queue, skb); queue_work(wl->freezable_wq, &wl->netstack_work); wl1271_free_tx_id(wl, id); } void wl18xx_tx_immediate_complete(struct wl1271 *wl) { struct wl18xx_fw_status_priv *status_priv = (struct wl18xx_fw_status_priv *)wl->fw_status->priv; struct wl18xx_priv *priv = wl->priv; u8 i, hlid; /* nothing to do here */ if (priv->last_fw_rls_idx == status_priv->fw_release_idx) return; /* update rates per link */ hlid = wl->fw_status->counters.hlid; if (hlid < WLCORE_MAX_LINKS) { wl->links[hlid].fw_rate_idx = wl->fw_status->counters.tx_last_rate; wl->links[hlid].fw_rate_mbps = wl->fw_status->counters.tx_last_rate_mbps; } /* freed Tx descriptors */ wl1271_debug(DEBUG_TX, "last released desc = %d, current idx = %d", priv->last_fw_rls_idx, status_priv->fw_release_idx); if (status_priv->fw_release_idx >= WL18XX_FW_MAX_TX_STATUS_DESC) { wl1271_error("invalid desc release index %d", status_priv->fw_release_idx); WARN_ON(1); return; } for (i = priv->last_fw_rls_idx; i != status_priv->fw_release_idx; i = (i + 1) % WL18XX_FW_MAX_TX_STATUS_DESC) { wl18xx_tx_complete_packet(wl, status_priv->released_tx_desc[i]); wl->tx_results_count++; } priv->last_fw_rls_idx = status_priv->fw_release_idx; } |