tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
}
- if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
- tx_flags |= TX_CMD_FLG_RTS_MSK;
- tx_flags &= ~TX_CMD_FLG_CTS_MSK;
- } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
- tx_flags &= ~TX_CMD_FLG_RTS_MSK;
- tx_flags |= TX_CMD_FLG_CTS_MSK;
- }
+ priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
* first entry */
iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
- if (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT))
+ if (info->control.hw_key)
iwl_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
/* Set up TFD's 2nd entry to point directly to remainder of skb,
}
EXPORT_SYMBOL(iwl_txq_check_empty);
-#ifdef CONFIG_IWLWIF_DEBUG
+/**
+ * iwl_tx_status_reply_compressed_ba - Update tx status from block-ack
+ *
+ * Go through block-ack's bitmap of ACK'd frames, update driver's record of
+ * ACK vs. not. This gets sent to mac80211, then to rate scaling algo.
+ */
+static int iwl_tx_status_reply_compressed_ba(struct iwl_priv *priv,
+ struct iwl_ht_agg *agg,
+ struct iwl_compressed_ba_resp *ba_resp)
+
+{
+ int i, sh, ack;
+ u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl);
+ u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
+ u64 bitmap;
+ int successes = 0;
+ struct ieee80211_tx_info *info;
+
+ if (unlikely(!agg->wait_for_ba)) {
+ IWL_ERROR("Received BA when not expected\n");
+ return -EINVAL;
+ }
+
+ /* Mark that the expected block-ack response arrived */
+ agg->wait_for_ba = 0;
+ IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl);
+
+ /* Calculate shift to align block-ack bits with our Tx window bits */
+ sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4);
+ if (sh < 0) /* tbw something is wrong with indices */
+ sh += 0x100;
+
+ /* don't use 64-bit values for now */
+ bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
+
+ if (agg->frame_count > (64 - sh)) {
+ IWL_DEBUG_TX_REPLY("more frames than bitmap size");
+ return -1;
+ }
+
+ /* check for success or failure according to the
+ * transmitted bitmap and block-ack bitmap */
+ bitmap &= agg->bitmap;
+
+ /* For each frame attempted in aggregation,
+ * update driver's record of tx frame's status. */
+ for (i = 0; i < agg->frame_count ; i++) {
+ ack = bitmap & (1 << i);
+ successes += !!ack;
+ IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
+ ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff,
+ agg->start_idx + i);
+ }
+
+ info = IEEE80211_SKB_CB(priv->txq[scd_flow].txb[agg->start_idx].skb[0]);
+ memset(&info->status, 0, sizeof(info->status));
+ info->flags = IEEE80211_TX_STAT_ACK;
+ info->flags |= IEEE80211_TX_STAT_AMPDU;
+ info->status.ampdu_ack_map = successes;
+ info->status.ampdu_ack_len = agg->frame_count;
+ iwl_hwrate_to_tx_control(priv, agg->rate_n_flags, info);
+
+ IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap);
+
+ return 0;
+}
+
+/**
+ * iwl_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
+ *
+ * Handles block-acknowledge notification from device, which reports success
+ * of frames sent via aggregation.
+ */
+void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
+ int index;
+ struct iwl_tx_queue *txq = NULL;
+ struct iwl_ht_agg *agg;
+ DECLARE_MAC_BUF(mac);
+
+ /* "flow" corresponds to Tx queue */
+ u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
+
+ /* "ssn" is start of block-ack Tx window, corresponds to index
+ * (in Tx queue's circular buffer) of first TFD/frame in window */
+ u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
+
+ if (scd_flow >= priv->hw_params.max_txq_num) {
+ IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
+ return;
+ }
+
+ txq = &priv->txq[scd_flow];
+ agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
+
+ /* Find index just before block-ack window */
+ index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
+
+ /* TODO: Need to get this copy more safely - now good for debug */
+
+ IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
+ "sta_id = %d\n",
+ agg->wait_for_ba,
+ print_mac(mac, (u8 *) &ba_resp->sta_addr_lo32),
+ ba_resp->sta_id);
+ IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
+ "%d, scd_ssn = %d\n",
+ ba_resp->tid,
+ ba_resp->seq_ctl,
+ (unsigned long long)le64_to_cpu(ba_resp->bitmap),
+ ba_resp->scd_flow,
+ ba_resp->scd_ssn);
+ IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n",
+ agg->start_idx,
+ (unsigned long long)agg->bitmap);
+
+ /* Update driver's record of ACK vs. not for each frame in window */
+ iwl_tx_status_reply_compressed_ba(priv, agg, ba_resp);
+
+ /* Release all TFDs before the SSN, i.e. all TFDs in front of
+ * block-ack window (we assume that they've been successfully
+ * transmitted ... if not, it's too late anyway). */
+ if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) {
+ /* calculate mac80211 ampdu sw queue to wake */
+ int ampdu_q =
+ scd_flow - priv->hw_params.first_ampdu_q + priv->hw->queues;
+ int freed = iwl_tx_queue_reclaim(priv, scd_flow, index);
+ priv->stations[ba_resp->sta_id].
+ tid[ba_resp->tid].tfds_in_queue -= freed;
+ if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
+ priv->mac80211_registered &&
+ agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
+ ieee80211_wake_queue(priv->hw, ampdu_q);
+
+ iwl_txq_check_empty(priv, ba_resp->sta_id,
+ ba_resp->tid, scd_flow);
+ }
+}
+EXPORT_SYMBOL(iwl_rx_reply_compressed_ba);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
const char *iwl_get_tx_fail_reason(u32 status)
git.openpandora.org / pandora-kernel.git / blobdiff