From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> the mapping tx_queue -> fifo is really transport related. The upper layer should be involved in such things. Note that upon agg_disable, the queue is always mapped to fifo 0, but this doesn't matter since when the queue will be setup again for a new BA session, it will be configured to the good fifo anyway. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx> --- drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 65 +-------------------- drivers/net/wireless/iwlwifi/iwl-agn.c | 5 +- drivers/net/wireless/iwlwifi/iwl-dev.h | 7 -- drivers/net/wireless/iwlwifi/iwl-shared.h | 46 ++++++++++++++- drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h | 8 +- drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c | 32 +++++++--- drivers/net/wireless/iwlwifi/iwl-trans.h | 22 ++++---- 7 files changed, 89 insertions(+), 96 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c index fa359f4..2b8fb53 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c @@ -42,43 +42,6 @@ #include "iwl-agn.h" #include "iwl-trans.h" -/* - * mac80211 queues, ACs, hardware queues, FIFOs. - * - * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues - * - * Mac80211 uses the following numbers, which we get as from it - * by way of skb_get_queue_mapping(skb): - * - * VO 0 - * VI 1 - * BE 2 - * BK 3 - * - * - * Regular (not A-MPDU) frames are put into hardware queues corresponding - * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their - * own queue per aggregation session (RA/TID combination), such queues are - * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In - * order to map frames to the right queue, we also need an AC->hw queue - * mapping. This is implemented here. - * - * Due to the way hw queues are set up (by the hw specific modules like - * iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity - * mapping. - */ - -static const u8 tid_to_ac[] = { - IEEE80211_AC_BE, - IEEE80211_AC_BK, - IEEE80211_AC_BK, - IEEE80211_AC_BE, - IEEE80211_AC_VI, - IEEE80211_AC_VI, - IEEE80211_AC_VO, - IEEE80211_AC_VO -}; - static inline int get_ac_from_tid(u16 tid) { if (likely(tid < ARRAY_SIZE(tid_to_ac))) @@ -88,15 +51,6 @@ static inline int get_ac_from_tid(u16 tid) return -EINVAL; } -static inline int get_fifo_from_tid(struct iwl_rxon_context *ctx, u16 tid) -{ - if (likely(tid < ARRAY_SIZE(tid_to_ac))) - return ctx->ac_to_fifo[tid_to_ac[tid]]; - - /* no support for TIDs 8-15 yet */ - return -EINVAL; -} - static int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id, int sta_id, int tid) { @@ -508,16 +462,11 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid, u16 *ssn) { int sta_id; - int tx_fifo; int txq_id; int ret; unsigned long flags; struct iwl_tid_data *tid_data; - tx_fifo = get_fifo_from_tid(iwl_rxon_ctx_from_vif(vif), tid); - if (unlikely(tx_fifo < 0)) - return tx_fifo; - IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", sta->addr, tid); @@ -544,7 +493,6 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, tid_data = &priv->shrd->tid_data[sta_id][tid]; *ssn = SEQ_TO_SN(tid_data->seq_number); tid_data->agg.txq_id = txq_id; - tid_data->agg.tx_fifo = tx_fifo; iwl_set_swq_id(&priv->txq[txq_id], get_ac_from_tid(tid), txq_id); spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); @@ -570,15 +518,11 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid) { - int tx_fifo_id, txq_id, sta_id, ssn; + int txq_id, sta_id, ssn; struct iwl_tid_data *tid_data; int write_ptr, read_ptr; unsigned long flags; - tx_fifo_id = get_fifo_from_tid(iwl_rxon_ctx_from_vif(vif), tid); - if (unlikely(tx_fifo_id < 0)) - return tx_fifo_id; - sta_id = iwl_sta_id(sta); if (sta_id == IWL_INVALID_STATION) { @@ -635,7 +579,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, * to deactivate the uCode queue, just return "success" to allow * mac80211 to clean up it own data. */ - iwl_trans_txq_agg_disable(trans(priv), txq_id, ssn, tx_fifo_id); + iwl_trans_txq_agg_disable(trans(priv), txq_id); spin_unlock_irqrestore(&priv->shrd->lock, flags); ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); @@ -661,11 +605,8 @@ static int iwlagn_txq_check_empty(struct iwl_priv *priv, /* aggregated HW queue */ if ((txq_id == tid_data->agg.txq_id) && (q->read_ptr == q->write_ptr)) { - u16 ssn = SEQ_TO_SN(tid_data->seq_number); - int tx_fifo = get_fifo_from_tid(ctx, tid); IWL_DEBUG_HT(priv, "HW queue empty: continue DELBA flow\n"); - iwl_trans_txq_agg_disable(trans(priv), txq_id, - ssn, tx_fifo); + iwl_trans_txq_agg_disable(trans(priv), txq_id); tid_data->agg.state = IWL_AGG_OFF; ieee80211_stop_tx_ba_cb_irqsafe(ctx->vif, addr, tid); } diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 868770b..da04c85 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2531,6 +2531,7 @@ static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, struct iwl_priv *priv = hw->priv; int ret = -EINVAL; struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; + struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", sta->addr, tid); @@ -2584,8 +2585,8 @@ static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, case IEEE80211_AMPDU_TX_OPERATIONAL: buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); - iwl_trans_txq_agg_setup(trans(priv), iwl_sta_id(sta), tid, - buf_size); + iwl_trans_txq_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta), + tid, buf_size); /* * If the limit is 0, then it wasn't initialised yet, diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 9c1163c..b490a2c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -960,13 +960,6 @@ struct iwl_notification_wait { bool triggered, aborted; }; -enum iwl_rxon_context_id { - IWL_RXON_CTX_BSS, - IWL_RXON_CTX_PAN, - - NUM_IWL_RXON_CTX -}; - struct iwl_rxon_context { struct ieee80211_vif *vif; diff --git a/drivers/net/wireless/iwlwifi/iwl-shared.h b/drivers/net/wireless/iwlwifi/iwl-shared.h index db606a6..4cfa31e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-shared.h +++ b/drivers/net/wireless/iwlwifi/iwl-shared.h @@ -67,6 +67,7 @@ #include <linux/spinlock.h> #include <linux/mutex.h> #include <linux/gfp.h> +#include <net/mac80211.h> #include "iwl-commands.h" @@ -192,7 +193,6 @@ struct iwl_ht_agg { #define IWL_EMPTYING_HW_QUEUE_ADDBA 2 #define IWL_EMPTYING_HW_QUEUE_DELBA 3 u8 state; - u8 tx_fifo; }; struct iwl_tid_data { @@ -284,6 +284,50 @@ struct iwl_rx_mem_buffer { #define rxb_addr(r) page_address(r->page) +/* + * mac80211 queues, ACs, hardware queues, FIFOs. + * + * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues + * + * Mac80211 uses the following numbers, which we get as from it + * by way of skb_get_queue_mapping(skb): + * + * VO 0 + * VI 1 + * BE 2 + * BK 3 + * + * + * Regular (not A-MPDU) frames are put into hardware queues corresponding + * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their + * own queue per aggregation session (RA/TID combination), such queues are + * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In + * order to map frames to the right queue, we also need an AC->hw queue + * mapping. This is implemented here. + * + * Due to the way hw queues are set up (by the hw specific modules like + * iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity + * mapping. + */ + +static const u8 tid_to_ac[] = { + IEEE80211_AC_BE, + IEEE80211_AC_BK, + IEEE80211_AC_BK, + IEEE80211_AC_BE, + IEEE80211_AC_VI, + IEEE80211_AC_VI, + IEEE80211_AC_VO, + IEEE80211_AC_VO +}; + +enum iwl_rxon_context_id { + IWL_RXON_CTX_BSS, + IWL_RXON_CTX_PAN, + + NUM_IWL_RXON_CTX +}; + #ifdef CONFIG_PM int iwl_suspend(struct iwl_priv *priv); int iwl_resume(struct iwl_priv *priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h index 269d9e3..f443c10 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h @@ -175,14 +175,14 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans, struct iwl_tx_queue *txq, u16 byte_cnt); -int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, - u16 ssn_idx, u8 tx_fifo); +int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id); void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index); void iwl_trans_tx_queue_set_status(struct iwl_priv *priv, struct iwl_tx_queue *txq, int tx_fifo_id, int scd_retry); -void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, - int frame_limit); +void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, + enum iwl_rxon_context_id ctx, + int sta_id, int tid, int frame_limit); void iwlagn_txq_free_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq, int index); void iwl_tx_queue_reclaim(struct iwl_trans *trans, int txq_id, int index, diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c index cc5ec2d..31adf99 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c @@ -424,8 +424,18 @@ void iwl_trans_tx_queue_set_status(struct iwl_priv *priv, scd_retry ? "BA" : "AC/CMD", txq_id, tx_fifo_id); } -void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, - int frame_limit) +static inline int get_fifo_from_tid(struct iwl_rxon_context *ctx, u16 tid) +{ + if (likely(tid < ARRAY_SIZE(tid_to_ac))) + return ctx->ac_to_fifo[tid_to_ac[tid]]; + + /* no support for TIDs 8-15 yet */ + return -EINVAL; +} + +void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, + enum iwl_rxon_context_id ctx, int sta_id, + int tid, int frame_limit) { int tx_fifo, txq_id, ssn_idx; u16 ra_tid; @@ -441,11 +451,16 @@ void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, if (WARN_ON(tid >= IWL_MAX_TID_COUNT)) return; + tx_fifo = get_fifo_from_tid(&priv->contexts[ctx], tid); + if (WARN_ON(tx_fifo < 0)) { + IWL_ERR(trans, "txq_agg_setup, bad fifo: %d\n", tx_fifo); + return; + } + spin_lock_irqsave(&priv->shrd->sta_lock, flags); tid_data = &priv->shrd->tid_data[sta_id][tid]; ssn_idx = SEQ_TO_SN(tid_data->seq_number); txq_id = tid_data->agg.txq_id; - tx_fifo = tid_data->agg.tx_fifo; spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); ra_tid = BUILD_RAxTID(sta_id, tid); @@ -492,8 +507,7 @@ void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, spin_unlock_irqrestore(&priv->shrd->lock, flags); } -int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, - u16 ssn_idx, u8 tx_fifo) +int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id) { struct iwl_trans *trans = trans(priv); if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) || @@ -511,14 +525,14 @@ int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, iwl_clear_bits_prph(bus(priv), SCD_AGGR_SEL, (1 << txq_id)); - priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); - priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); + priv->txq[txq_id].q.read_ptr = 0; + priv->txq[txq_id].q.write_ptr = 0; /* supposes that ssn_idx is valid (!= 0xFFF) */ - iwl_trans_set_wr_ptrs(trans, txq_id, ssn_idx); + iwl_trans_set_wr_ptrs(trans, txq_id, 0); iwl_clear_bits_prph(bus(priv), SCD_INTERRUPT_MASK, (1 << txq_id)); iwl_txq_ctx_deactivate(priv, txq_id); - iwl_trans_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); + iwl_trans_tx_queue_set_status(priv, &priv->txq[txq_id], 0, 0); return 0; } diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 2385de2..011c824 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -123,10 +123,10 @@ struct iwl_trans_ops { void (*reclaim)(struct iwl_trans *trans, int txq_id, int ssn, u32 status, struct sk_buff_head *skbs); - int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id, - u16 ssn_idx, u8 tx_fifo); - void (*txq_agg_setup)(struct iwl_priv *priv, int sta_id, int tid, - int frame_limit); + int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id); + void (*txq_agg_setup)(struct iwl_priv *priv, + enum iwl_rxon_context_id ctx, int sta_id, + int tid, int frame_limit); void (*kick_nic)(struct iwl_trans *trans); @@ -209,17 +209,17 @@ static inline void iwl_trans_reclaim(struct iwl_trans *trans, int txq_id, trans->ops->reclaim(trans, txq_id, ssn, status, skbs); } -static inline int iwl_trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id, - u16 ssn_idx, u8 tx_fifo) +static inline int iwl_trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id) { - return trans->ops->txq_agg_disable(priv(trans), txq_id, - ssn_idx, tx_fifo); + return trans->ops->txq_agg_disable(priv(trans), txq_id); } -static inline void iwl_trans_txq_agg_setup(struct iwl_trans *trans, int sta_id, - int tid, int frame_limit) +static inline void iwl_trans_txq_agg_setup(struct iwl_trans *trans, + enum iwl_rxon_context_id ctx, + int sta_id, int tid, + int frame_limit) { - trans->ops->txq_agg_setup(priv(trans), sta_id, tid, frame_limit); + trans->ops->txq_agg_setup(priv(trans), ctx, sta_id, tid, frame_limit); } static inline void iwl_trans_kick_nic(struct iwl_trans *trans) -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
