/*
* handle build REPLY_TX command notification.
*/
static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv,
struct sk_buff *skb,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info,
struct ieee80211_hdr *hdr, u8 sta_id)
{
__le16 fc = hdr->frame_control;
__le32 tx_flags = tx_cmd->tx_flags;
tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
tx_flags |= TX_CMD_FLG_ACK_MSK;
else
tx_flags &= ~TX_CMD_FLG_ACK_MSK;
if (ieee80211_is_probe_resp(fc))
tx_flags |= TX_CMD_FLG_TSF_MSK;
else if (ieee80211_is_back_req(fc))
tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
else if (info->band == IEEE80211_BAND_2GHZ &&
cfg(priv)->bt_params &&
cfg(priv)->bt_params->advanced_bt_coexist &&
(ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) ||
ieee80211_is_reassoc_req(fc) ||
skb->protocol == cpu_to_be16(ETH_P_PAE)))
tx_flags |= TX_CMD_FLG_IGNORE_BT;
tx_cmd->sta_id = sta_id;
if (ieee80211_has_morefrags(fc))
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
if (ieee80211_is_data_qos(fc)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
tx_cmd->tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
} else {
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
else
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
}
iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags);
tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
if (ieee80211_is_mgmt(fc)) {
if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
else
tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
} else {
tx_cmd->timeout.pm_frame_timeout = 0;
}
tx_cmd->driver_txop = 0;
tx_cmd->tx_flags = tx_flags;
tx_cmd->next_frame_len = 0;
}
/*
* Sets most of the Tx cmd's fields
*/
void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info, u8 sta_id)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
__le16 fc = hdr->frame_control;
u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
u32 len = skb->len + FCS_LEN;
u8 ac;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
tx_flags |= TX_CMD_FLG_ACK;
else
tx_flags &= ~TX_CMD_FLG_ACK;
if (ieee80211_is_probe_resp(fc))
tx_flags |= TX_CMD_FLG_TSF;
if (ieee80211_has_morefrags(fc))
tx_flags |= TX_CMD_FLG_MORE_FRAG;
if (ieee80211_is_data_qos(fc)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
tx_cmd->tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
} else if (ieee80211_is_back_req(fc)) {
struct ieee80211_bar *bar = (void *)skb->data;
u16 control = le16_to_cpu(bar->control);
tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
tx_cmd->tid_tspec = (control &
IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT);
} else {
static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
struct sk_buff *skb,
u16 hw_queue)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct rtl_tx_desc *pdesc = NULL;
struct rtl_tcb_desc tcb_desc;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
__le16 fc = hdr->frame_control;
u8 *pda_addr = hdr->addr1;
/* ssn */
u8 *qc = NULL;
u8 tid = 0;
u16 seq_number = 0;
memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
if (ieee80211_is_auth(fc)) {
RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
rtl_ips_nic_on(hw);
}
if (rtlpriv->psc.sw_ps_enabled) {
if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
!ieee80211_has_pm(fc))
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
}
rtl_action_proc(hw, skb, true);
if (is_multicast_ether_addr(pda_addr))
rtlpriv->stats.txbytesmulticast += skb->len;
else if (is_broadcast_ether_addr(pda_addr))
rtlpriv->stats.txbytesbroadcast += skb->len;
else
rtlpriv->stats.txbytesunicast += skb->len;
if (ieee80211_is_data_qos(fc)) {
qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
seq_number = (le16_to_cpu(hdr->seq_ctrl) &
IEEE80211_SCTL_SEQ) >> 4;
seq_number += 1;
seq_number <<= 4;
}
rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
hw_queue, &tcb_desc);
if (!ieee80211_has_morefrags(hdr->frame_control)) {
if (qc)
mac->tids[tid].seq_number = seq_number;
}
if (ieee80211_is_data(fc))
rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
}
static int rtl_pci_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct rtl8192_tx_ring *ring;
struct rtl_tx_desc *pdesc;
u8 idx;
unsigned int queue_index, hw_queue;
unsigned long flags;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
__le16 fc = hdr->frame_control;
u8 *pda_addr = hdr->addr1;
struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
/*ssn */
u8 *qc = NULL;
u8 tid = 0;
u16 seq_number = 0;
u8 own;
u8 temp_one = 1;
if (ieee80211_is_mgmt(fc))
rtl_tx_mgmt_proc(hw, skb);
rtl_action_proc(hw, skb, true);
queue_index = skb_get_queue_mapping(skb);
hw_queue = _rtl_mac_to_hwqueue(fc, queue_index);
if (is_multicast_ether_addr(pda_addr))
rtlpriv->stats.txbytesmulticast += skb->len;
else if (is_broadcast_ether_addr(pda_addr))
rtlpriv->stats.txbytesbroadcast += skb->len;
else
rtlpriv->stats.txbytesunicast += skb->len;
spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
ring = &rtlpci->tx_ring[hw_queue];
if (hw_queue != BEACON_QUEUE)
idx = (ring->idx + skb_queue_len(&ring->queue)) %
ring->entries;
else
idx = 0;
pdesc = &ring->desc[idx];
own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
true, HW_DESC_OWN);
if ((own == 1) && (hw_queue != BEACON_QUEUE)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
("No more TX desc@%d, ring->idx = %d,"
"idx = %d, skb_queue_len = 0x%d\n",
hw_queue, ring->idx, idx,
skb_queue_len(&ring->queue)));
spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
return skb->len;
}
/*
*if(ieee80211_is_nullfunc(fc)) {
* spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
* return 1;
*}
*/
if (ieee80211_is_data_qos(fc)) {
qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
seq_number = mac->tids[tid].seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
/*
*hdr->seq_ctrl = hdr->seq_ctrl &
*cpu_to_le16(IEEE80211_SCTL_FRAG);
*hdr->seq_ctrl |= cpu_to_le16(seq_number);
*/
seq_number += 1;
}
if (ieee80211_is_data(fc))
rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc,
info, skb, hw_queue);
__skb_queue_tail(&ring->queue, skb);
rtlpriv->cfg->ops->set_desc((u8 *) pdesc, true,
HW_DESC_OWN, (u8 *)&temp_one);
if (!ieee80211_has_morefrags(hdr->frame_control)) {
if (qc)
mac->tids[tid].seq_number = seq_number;
}
if ((ring->entries - skb_queue_len(&ring->queue)) < 2 &&
hw_queue != BEACON_QUEUE) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
("less desc left, stop skb_queue@%d, "
"ring->idx = %d,"
"idx = %d, skb_queue_len = 0x%d\n",
hw_queue, ring->idx, idx,
skb_queue_len(&ring->queue)));
ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
}
spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
rtlpriv->cfg->ops->tx_polling(hw, hw_queue);
return 0;
}
/* Assumes you've already done the endian to CPU conversion */
bool ath9k_cmn_rx_accept(struct ath_common *common,
struct ieee80211_hdr *hdr,
struct ieee80211_rx_status *rxs,
struct ath_rx_status *rx_stats,
bool *decrypt_error,
unsigned int rxfilter)
{
struct ath_hw *ah = common->ah;
bool is_mc, is_valid_tkip, strip_mic, mic_error;
__le16 fc;
fc = hdr->frame_control;
is_mc = !!is_multicast_ether_addr(hdr->addr1);
is_valid_tkip = rx_stats->rs_keyix != ATH9K_RXKEYIX_INVALID &&
test_bit(rx_stats->rs_keyix, common->tkip_keymap);
strip_mic = is_valid_tkip && ieee80211_is_data(fc) &&
ieee80211_has_protected(fc) &&
!(rx_stats->rs_status &
(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_CRC | ATH9K_RXERR_MIC |
ATH9K_RXERR_KEYMISS));
/*
* Key miss events are only relevant for pairwise keys where the
* descriptor does contain a valid key index. This has been observed
* mostly with CCMP encryption.
*/
if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID ||
!test_bit(rx_stats->rs_keyix, common->ccmp_keymap))
rx_stats->rs_status &= ~ATH9K_RXERR_KEYMISS;
mic_error = is_valid_tkip && !ieee80211_is_ctl(fc) &&
!ieee80211_has_morefrags(fc) &&
!(le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG) &&
(rx_stats->rs_status & ATH9K_RXERR_MIC);
/*
* The rx_stats->rs_status will not be set until the end of the
* chained descriptors so it can be ignored if rs_more is set. The
* rs_more will be false at the last element of the chained
* descriptors.
*/
if (rx_stats->rs_status != 0) {
u8 status_mask;
if (rx_stats->rs_status & ATH9K_RXERR_CRC) {
rxs->flag |= RX_FLAG_FAILED_FCS_CRC;
mic_error = false;
}
if ((rx_stats->rs_status & ATH9K_RXERR_DECRYPT) ||
(!is_mc && (rx_stats->rs_status & ATH9K_RXERR_KEYMISS))) {
*decrypt_error = true;
mic_error = false;
}
/*
* Reject error frames with the exception of
* decryption and MIC failures. For monitor mode,
* we also ignore the CRC error.
*/
status_mask = ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC |
ATH9K_RXERR_KEYMISS;
if (ah->is_monitoring && (rxfilter & FIF_FCSFAIL))
status_mask |= ATH9K_RXERR_CRC;
if (rx_stats->rs_status & ~status_mask)
return false;
}
/*
* For unicast frames the MIC error bit can have false positives,
* so all MIC error reports need to be validated in software.
* False negatives are not common, so skip software verification
* if the hardware considers the MIC valid.
*/
if (strip_mic)
rxs->flag |= RX_FLAG_MMIC_STRIPPED;
else if (is_mc && mic_error)
rxs->flag |= RX_FLAG_MMIC_ERROR;
return true;
}
/*
* Sets most of the Tx cmd's fields
*/
static void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info, u8 sta_id)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
__le16 fc = hdr->frame_control;
u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
u32 len = skb->len + FCS_LEN;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
tx_flags |= TX_CMD_FLG_ACK;
else
tx_flags &= ~TX_CMD_FLG_ACK;
if (ieee80211_is_probe_resp(fc))
tx_flags |= TX_CMD_FLG_TSF;
else if (ieee80211_is_back_req(fc))
tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
/* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */
if (info->band == IEEE80211_BAND_2GHZ &&
(info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO ||
is_multicast_ether_addr(hdr->addr1) ||
ieee80211_is_back_req(fc) || ieee80211_is_mgmt(fc)))
tx_flags |= TX_CMD_FLG_BT_DIS;
if (ieee80211_has_morefrags(fc))
tx_flags |= TX_CMD_FLG_MORE_FRAG;
if (ieee80211_is_data_qos(fc)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
tx_cmd->tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
} else {
tx_cmd->tid_tspec = IWL_TID_NON_QOS;
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
tx_flags |= TX_CMD_FLG_SEQ_CTL;
else
tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
}
if (ieee80211_is_mgmt(fc)) {
if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
tx_cmd->pm_frame_timeout = cpu_to_le16(3);
else
tx_cmd->pm_frame_timeout = cpu_to_le16(2);
/* The spec allows Action frames in A-MPDU, we don't support
* it
*/
WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
} else if (skb->protocol == cpu_to_be16(ETH_P_PAE)) {
tx_cmd->pm_frame_timeout = cpu_to_le16(2);
} else {
tx_cmd->pm_frame_timeout = 0;
}
if (info->flags & IEEE80211_TX_CTL_AMPDU)
tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
!is_multicast_ether_addr(ieee80211_get_DA(hdr)))
tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
tx_cmd->driver_txop = 0;
tx_cmd->tx_flags = cpu_to_le32(tx_flags);
/* Total # bytes to be transmitted */
tx_cmd->len = cpu_to_le16((u16)skb->len);
tx_cmd->next_frame_len = 0;
tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
tx_cmd->sta_id = sta_id;
}
/*
* Sets the fields in the Tx cmd that are crypto related
*/
int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
struct ieee80211_sta *sta)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct iwl_mvm_sta *mvmsta;
struct iwl_device_cmd *dev_cmd;
struct iwl_tx_cmd *tx_cmd;
__le16 fc;
u16 seq_number = 0;
u8 tid = IWL_MAX_TID_COUNT;
u8 txq_id = info->hw_queue;
bool is_data_qos = false, is_ampdu = false;
mvmsta = (void *)sta->drv_priv;
fc = hdr->frame_control;
if (WARN_ON_ONCE(!mvmsta))
return -1;
if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
return -1;
dev_cmd = iwl_mvm_set_tx_params(mvm, skb, sta, mvmsta->sta_id);
if (!dev_cmd)
goto drop;
tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
/* From now on, we cannot access info->control */
spin_lock(&mvmsta->lock);
if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
u8 *qc = NULL;
qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
goto drop_unlock_sta;
seq_number = mvmsta->tid_data[tid].seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(seq_number);
seq_number += 0x10;
is_data_qos = true;
is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
}
/* Copy MAC header from skb into command buffer */
memcpy(tx_cmd->hdr, hdr, ieee80211_hdrlen(fc));
WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM);
if (is_ampdu) {
if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON))
goto drop_unlock_sta;
txq_id = mvmsta->tid_data[tid].txq_id;
}
IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id,
tid, txq_id, seq_number);
if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id))
goto drop_unlock_sta;
if (is_data_qos && !ieee80211_has_morefrags(fc))
mvmsta->tid_data[tid].seq_number = seq_number;
spin_unlock(&mvmsta->lock);
if (txq_id < mvm->first_agg_queue)
atomic_inc(&mvm->pending_frames[mvmsta->sta_id]);
return 0;
drop_unlock_sta:
iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
spin_unlock(&mvmsta->lock);
drop:
return -1;
}
/*
* Sets most of the Tx cmd's fields
*/
static void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info, u8 sta_id)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
__le16 fc = hdr->frame_control;
u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
u32 len = skb->len + FCS_LEN;
u8 ac;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
tx_flags |= TX_CMD_FLG_ACK;
else
tx_flags &= ~TX_CMD_FLG_ACK;
if (ieee80211_is_probe_resp(fc))
tx_flags |= TX_CMD_FLG_TSF;
else if (ieee80211_is_back_req(fc))
tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
if (ieee80211_has_morefrags(fc))
tx_flags |= TX_CMD_FLG_MORE_FRAG;
if (ieee80211_is_data_qos(fc)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
tx_cmd->tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
} else {
tx_cmd->tid_tspec = IWL_TID_NON_QOS;
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
tx_flags |= TX_CMD_FLG_SEQ_CTL;
else
tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
}
/* tid_tspec will default to 0 = BE when QOS isn't enabled */
ac = tid_to_mac80211_ac[tx_cmd->tid_tspec];
tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) <<
TX_CMD_FLG_BT_PRIO_POS;
if (ieee80211_is_mgmt(fc)) {
if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
tx_cmd->pm_frame_timeout = cpu_to_le16(3);
else
tx_cmd->pm_frame_timeout = cpu_to_le16(2);
/* The spec allows Action frames in A-MPDU, we don't support
* it
*/
WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
} else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) {
tx_cmd->pm_frame_timeout = cpu_to_le16(2);
} else {
tx_cmd->pm_frame_timeout = 0;
}
if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
!is_multicast_ether_addr(ieee80211_get_DA(hdr)))
tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
if ((mvm->fw->ucode_capa.capa[0] &
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
ieee80211_action_contains_tpc(skb))
tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
tx_cmd->tx_flags = cpu_to_le32(tx_flags);
/* Total # bytes to be transmitted */
tx_cmd->len = cpu_to_le16((u16)skb->len);
tx_cmd->next_frame_len = 0;
tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
tx_cmd->sta_id = sta_id;
}
static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
struct txentry_desc *txdesc)
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
struct ieee80211_rate *rate =
ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
const struct rt2x00_rate *hwrate;
unsigned int data_length;
unsigned int duration;
unsigned int residual;
unsigned long irqflags;
memset(txdesc, 0, sizeof(*txdesc));
/*
* Initialize information from queue
*/
txdesc->queue = entry->queue->qid;
txdesc->cw_min = entry->queue->cw_min;
txdesc->cw_max = entry->queue->cw_max;
txdesc->aifs = entry->queue->aifs;
/* Data length should be extended with 4 bytes for CRC */
data_length = entry->skb->len + 4;
/*
* Check whether this frame is to be acked.
*/
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK))
__set_bit(ENTRY_TXD_ACK, &txdesc->flags);
/*
* Check if this is a RTS/CTS frame
*/
if (ieee80211_is_rts(hdr->frame_control) ||
ieee80211_is_cts(hdr->frame_control)) {
__set_bit(ENTRY_TXD_BURST, &txdesc->flags);
if (ieee80211_is_rts(hdr->frame_control))
__set_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags);
else
__set_bit(ENTRY_TXD_CTS_FRAME, &txdesc->flags);
if (tx_info->control.rts_cts_rate_idx >= 0)
rate =
ieee80211_get_rts_cts_rate(rt2x00dev->hw, tx_info);
}
/*
* Determine retry information.
*/
txdesc->retry_limit = tx_info->control.retry_limit;
if (tx_info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
__set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags);
/*
* Check if more fragments are pending
*/
if (ieee80211_has_morefrags(hdr->frame_control)) {
__set_bit(ENTRY_TXD_BURST, &txdesc->flags);
__set_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags);
}
/*
* Beacons and probe responses require the tsf timestamp
* to be inserted into the frame.
*/
if (ieee80211_is_beacon(hdr->frame_control) ||
ieee80211_is_probe_resp(hdr->frame_control))
__set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags);
/*
* Determine with what IFS priority this frame should be send.
* Set ifs to IFS_SIFS when the this is not the first fragment,
* or this fragment came after RTS/CTS.
*/
if (test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags)) {
txdesc->ifs = IFS_SIFS;
} else if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) {
__set_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags);
txdesc->ifs = IFS_BACKOFF;
} else {
txdesc->ifs = IFS_SIFS;
}
/*
* Hardware should insert sequence counter.
* FIXME: We insert a software sequence counter first for
* hardware that doesn't support hardware sequence counting.
*
* This is wrong because beacons are not getting sequence
* numbers assigned properly.
*
* A secondary problem exists for drivers that cannot toggle
* sequence counting per-frame, since those will override the
* sequence counter given by mac80211.
*/
if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
spin_lock_irqsave(&intf->seqlock, irqflags);
if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
intf->seqno += 0x10;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(intf->seqno);
spin_unlock_irqrestore(&intf->seqlock, irqflags);
__set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
}
/*
* PLCP setup
* Length calculation depends on OFDM/CCK rate.
*/
hwrate = rt2x00_get_rate(rate->hw_value);
txdesc->signal = hwrate->plcp;
txdesc->service = 0x04;
if (hwrate->flags & DEV_RATE_OFDM) {
__set_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags);
txdesc->length_high = (data_length >> 6) & 0x3f;
txdesc->length_low = data_length & 0x3f;
} else {
static void iwl_pass_packet_to_mac80211(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
u16 len,
u32 ampdu_status,
struct iwl_rx_mem_buffer *rxb,
struct ieee80211_rx_status *stats)
{
struct sk_buff *skb;
int ret = 0;
__le16 fc = hdr->frame_control;
/* We only process data packets if the interface is open */
if (unlikely(!priv->is_open)) {
IWL_DEBUG_DROP_LIMIT(priv,
"Dropping packet while interface is not open.\n");
return;
}
/* In case of HW accelerated crypto and bad decryption, drop */
if (!priv->cfg->mod_params->sw_crypto &&
iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats))
return;
skb = alloc_skb(IWL_LINK_HDR_MAX * 2, GFP_ATOMIC);
if (!skb) {
IWL_ERR(priv, "alloc_skb failed\n");
return;
}
skb_reserve(skb, IWL_LINK_HDR_MAX);
skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), len);
/* mac80211 currently doesn't support paged SKB. Convert it to
* linear SKB for management frame and data frame requires
* software decryption or software defragementation. */
if (ieee80211_is_mgmt(fc) ||
ieee80211_has_protected(fc) ||
ieee80211_has_morefrags(fc) ||
le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG ||
(ieee80211_is_data_qos(fc) &&
*ieee80211_get_qos_ctl(hdr) &
IEEE80211_QOS_CONTROL_A_MSDU_PRESENT))
ret = skb_linearize(skb);
else
ret = __pskb_pull_tail(skb, min_t(u16, IWL_LINK_HDR_MAX, len)) ?
0 : -ENOMEM;
if (ret) {
kfree_skb(skb);
goto out;
}
/*
* XXX: We cannot touch the page and its virtual memory (hdr) after
* here. It might have already been freed by the above skb change.
*/
iwl_update_stats(priv, false, fc, len);
memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
ieee80211_rx(priv->hw, skb);
out:
priv->alloc_rxb_page--;
rxb->page = NULL;
}
static void
mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_sta *sta;
struct mt76_wcid *wcid = status->wcid;
bool ps;
int i;
if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
sta = ieee80211_find_sta_by_ifaddr(dev->hw, hdr->addr2, NULL);
if (sta)
wcid = status->wcid = (struct mt76_wcid *) sta->drv_priv;
}
if (!wcid || !wcid->sta)
return;
sta = container_of((void *) wcid, struct ieee80211_sta, drv_priv);
if (status->signal <= 0)
ewma_signal_add(&wcid->rssi, -status->signal);
wcid->inactive_count = 0;
if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags))
return;
if (ieee80211_is_pspoll(hdr->frame_control)) {
ieee80211_sta_pspoll(sta);
return;
}
if (ieee80211_has_morefrags(hdr->frame_control) ||
!(ieee80211_is_mgmt(hdr->frame_control) ||
ieee80211_is_data(hdr->frame_control)))
return;
ps = ieee80211_has_pm(hdr->frame_control);
if (ps && (ieee80211_is_data_qos(hdr->frame_control) ||
ieee80211_is_qos_nullfunc(hdr->frame_control)))
ieee80211_sta_uapsd_trigger(sta, status->tid);
if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps)
return;
if (ps)
set_bit(MT_WCID_FLAG_PS, &wcid->flags);
else
clear_bit(MT_WCID_FLAG_PS, &wcid->flags);
dev->drv->sta_ps(dev, sta, ps);
ieee80211_sta_ps_transition(sta, ps);
if (ps)
return;
for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
struct mt76_txq *mtxq;
if (!sta->txq[i])
continue;
mtxq = (struct mt76_txq *) sta->txq[i]->drv_priv;
if (!skb_queue_empty(&mtxq->retry_q))
ieee80211_schedule_txq(dev->hw, sta->txq[i]);
}
}
/*
* start REPLY_TX command process
*/
int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct iwl_station_priv *sta_priv = NULL;
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
struct iwl_device_cmd *dev_cmd = NULL;
struct iwl_tx_cmd *tx_cmd;
__le16 fc;
u8 hdr_len;
u16 len, seq_number = 0;
u8 sta_id, tid = IWL_MAX_TID_COUNT;
unsigned long flags;
bool is_agg = false;
if (info->control.vif)
ctx = iwl_rxon_ctx_from_vif(info->control.vif);
spin_lock_irqsave(&priv->shrd->lock, flags);
if (iwl_is_rfkill(priv->shrd)) {
IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
goto drop_unlock_priv;
}
fc = hdr->frame_control;
#ifdef CONFIG_IWLWIFI_DEBUG
if (ieee80211_is_auth(fc))
IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
else if (ieee80211_is_assoc_req(fc))
IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
else if (ieee80211_is_reassoc_req(fc))
IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
#endif
if (unlikely(ieee80211_is_probe_resp(fc))) {
struct iwl_wipan_noa_data *noa_data =
rcu_dereference(priv->noa_data);
if (noa_data &&
pskb_expand_head(skb, 0, noa_data->length,
GFP_ATOMIC) == 0) {
memcpy(skb_put(skb, noa_data->length),
noa_data->data, noa_data->length);
hdr = (struct ieee80211_hdr *)skb->data;
}
}
hdr_len = ieee80211_hdrlen(fc);
/* For management frames use broadcast id to do not break aggregation */
if (!ieee80211_is_data(fc))
sta_id = ctx->bcast_sta_id;
else {
/* Find index into station table for destination station */
sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta);
if (sta_id == IWL_INVALID_STATION) {
IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
hdr->addr1);
goto drop_unlock_priv;
}
}
IWL_DEBUG_TX(priv, "station Id %d\n", sta_id);
if (info->control.sta)
sta_priv = (void *)info->control.sta->drv_priv;
if (sta_priv && sta_priv->asleep &&
(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) {
/*
* This sends an asynchronous command to the device,
* but we can rely on it being processed before the
* next frame is processed -- and the next frame to
* this station is the one that will consume this
* counter.
* For now set the counter to just 1 since we do not
* support uAPSD yet.
*/
iwl_sta_modify_sleep_tx_count(priv, sta_id, 1);
}
if (info->flags & IEEE80211_TX_CTL_AMPDU)
is_agg = true;
/* irqs already disabled/saved above when locking priv->shrd->lock */
spin_lock(&priv->shrd->sta_lock);
dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC);
if (unlikely(!dev_cmd))
goto drop_unlock_sta;
memset(dev_cmd, 0, sizeof(*dev_cmd));
tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload;
/* Total # bytes to be transmitted */
len = (u16)skb->len;
tx_cmd->len = cpu_to_le16(len);
if (info->control.hw_key)
iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
/* TODO need this for burst mode later on */
iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id);
iwl_dbg_log_tx_data_frame(priv, len, hdr);
iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc);
iwl_update_stats(priv, true, fc, len);
memset(&info->status, 0, sizeof(info->status));
info->driver_data[0] = ctx;
info->driver_data[1] = dev_cmd;
if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
u8 *qc = NULL;
struct iwl_tid_data *tid_data;
qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
goto drop_unlock_sta;
tid_data = &priv->tid_data[sta_id][tid];
/* aggregation is on for this <sta,tid> */
if (info->flags & IEEE80211_TX_CTL_AMPDU &&
tid_data->agg.state != IWL_AGG_ON) {
IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:"
" Tx flags = 0x%08x, agg.state = %d",
info->flags, tid_data->agg.state);
IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d",
sta_id, tid, SEQ_TO_SN(tid_data->seq_number));
goto drop_unlock_sta;
}
/* We can receive packets from the stack in IWL_AGG_{ON,OFF}
* only. Check this here.
*/
if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON &&
tid_data->agg.state != IWL_AGG_OFF,
"Tx while agg.state = %d", tid_data->agg.state))
goto drop_unlock_sta;
seq_number = tid_data->seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(seq_number);
seq_number += 0x10;
}
/* Copy MAC header from skb into command buffer */
memcpy(tx_cmd->hdr, hdr, hdr_len);
if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id, tid))
goto drop_unlock_sta;
if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc) &&
!ieee80211_has_morefrags(fc))
priv->tid_data[sta_id][tid].seq_number = seq_number;
spin_unlock(&priv->shrd->sta_lock);
spin_unlock_irqrestore(&priv->shrd->lock, flags);
/*
* Avoid atomic ops if it isn't an associated client.
* Also, if this is a packet for aggregation, don't
* increase the counter because the ucode will stop
* aggregation queues when their respective station
* goes to sleep.
*/
if (sta_priv && sta_priv->client && !is_agg)
atomic_inc(&sta_priv->pending_frames);
return 0;
drop_unlock_sta:
if (dev_cmd)
kmem_cache_free(priv->tx_cmd_pool, dev_cmd);
spin_unlock(&priv->shrd->sta_lock);
drop_unlock_priv:
spin_unlock_irqrestore(&priv->shrd->lock, flags);
return -1;
}
