/**
* ieee80211_set_qos_hdr - Fill in the QoS header if there is one.
*
* @sdata: local subif
* @skb: packet to be updated
*/
void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u8 *p;
u8 ack_policy, tid;
if (!ieee80211_is_data_qos(hdr->frame_control))
return;
p = ieee80211_get_qos_ctl(hdr);
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
/* preserve EOSP bit */
ack_policy = *p & IEEE80211_QOS_CTL_EOSP;
if (is_multicast_ether_addr(hdr->addr1) ||
sdata->noack_map & BIT(tid)) {
ack_policy |= IEEE80211_QOS_CTL_ACK_POLICY_NOACK;
info->flags |= IEEE80211_TX_CTL_NO_ACK;
}
/* qos header is 2 bytes */
*p++ = ack_policy | tid;
if (ieee80211_vif_is_mesh(&sdata->vif)) {
/* preserve RSPI and Mesh PS Level bit */
*p &= ((IEEE80211_QOS_CTL_RSPI |
IEEE80211_QOS_CTL_MESH_PS_LEVEL) >> 8);
/* Nulls don't have a mesh header (frame body) */
if (!ieee80211_is_qos_nullfunc(hdr->frame_control))
*p |= (IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8);
} else {
static bool carl9170_ampdu_check(struct ar9170 *ar, u8 *buf, u8 ms)
{
__le16 fc;
if ((ms & AR9170_RX_STATUS_MPDU) == AR9170_RX_STATUS_MPDU_SINGLE) {
/*
* This frame is not part of an aMPDU.
* Therefore it is not subjected to any
* of the following content restrictions.
*/
return true;
}
/*
* "802.11n - 7.4a.3 A-MPDU contents" describes in which contexts
* certain frame types can be part of an aMPDU.
*
* In order to keep the processing cost down, I opted for a
* stateless filter solely based on the frame control field.
*/
fc = ((struct ieee80211_hdr *)buf)->frame_control;
if (ieee80211_is_data_qos(fc) && ieee80211_is_data_present(fc))
return true;
if (ieee80211_is_ack(fc) || ieee80211_is_back(fc) ||
ieee80211_is_back_req(fc))
return true;
if (ieee80211_is_action(fc))
return true;
return false;
}
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc)
{
unsigned int hdrlen = 24;
if (ieee80211_is_data(fc)) {
if (ieee80211_has_a4(fc))
hdrlen = 30;
if (ieee80211_is_data_qos(fc)) {
hdrlen += IEEE80211_QOS_CTL_LEN;
if (ieee80211_has_order(fc))
hdrlen += IEEE80211_HT_CTL_LEN;
}
goto out;
}
if (ieee80211_is_ctl(fc)) {
/*
* ACK and CTS are 10 bytes, all others 16. To see how
* to get this condition consider
* subtype mask: 0b0000000011110000 (0x00F0)
* ACK subtype: 0b0000000011010000 (0x00D0)
* CTS subtype: 0b0000000011000000 (0x00C0)
* bits that matter: ^^^ (0x00E0)
* value of those: 0b0000000011000000 (0x00C0)
*/
if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0))
hdrlen = 10;
else
hdrlen = 16;
}
out:
return hdrlen;
}
void ieee80211_select_queue(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
u16 queue;
u8 tid;
queue = classify80211(local, skb);
if (unlikely(queue >= local->hw.queues))
queue = local->hw.queues - 1;
/*
* Now we know the 1d priority, fill in the QoS header if
* there is one (and we haven't done this before).
*/
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *p = ieee80211_get_qos_ctl(hdr);
u8 ack_policy = 0;
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
if (unlikely(local->wifi_wme_noack_test))
ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK <<
QOS_CONTROL_ACK_POLICY_SHIFT;
/* qos header is 2 bytes, second reserved */
*p++ = ack_policy | tid;
*p = 0;
}
#if 0 /* Not in RHEl5... */
skb_set_queue_mapping(skb, queue);
#else
ieee80211_set_queue_mapping(skb, queue);
#endif
}
/*
* 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 _rtl8822be_translate_rx_signal_stuff(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct rtl_stats *pstatus,
u8 *p_phystrpt)
{
struct ieee80211_hdr *hdr;
u8 *tmp_buf;
tmp_buf = skb->data + pstatus->rx_drvinfo_size + pstatus->rx_bufshift +
24;
hdr = (struct ieee80211_hdr *)tmp_buf;
/* query phy status */
_rtl8822be_query_rxphystatus(hw, p_phystrpt, hdr, pstatus);
/* packet statistics */
if (pstatus->packet_beacon && pstatus->packet_matchbssid)
rtl_priv(hw)->dm.dbginfo.num_qry_beacon_pkt++;
if (pstatus->packet_matchbssid &&
ieee80211_is_data_qos(hdr->frame_control) &&
!is_multicast_ether_addr(ieee80211_get_DA(hdr))) {
struct ieee80211_qos_hdr *hdr_qos =
(struct ieee80211_qos_hdr *)tmp_buf;
u16 tid = le16_to_cpu(hdr_qos->qos_ctrl) & 0xf;
if (tid != 0 && tid != 3)
rtl_priv(hw)->dm.dbginfo.num_non_be_pkt++;
}
/* signal statistics */
if (p_phystrpt)
rtl_process_phyinfo(hw, tmp_buf, pstatus);
}
/*
* 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;
}
static unsigned int _rtl_rx_get_padding(struct ieee80211_hdr *hdr,
unsigned int len)
{
#if NET_IP_ALIGN != 0
unsigned int padding = 0;
#endif
/* make function no-op when possible */
if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
return 0;
#if NET_IP_ALIGN != 0
/* alignment calculation as in lbtf_rx() / carl9170_rx_copy_data() */
/* TODO: deduplicate common code, define helper function instead? */
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
padding ^= NET_IP_ALIGN;
/* Input might be invalid, avoid accessing memory outside
* the buffer.
*/
if ((unsigned long)qc - (unsigned long)hdr < len &&
*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
padding ^= NET_IP_ALIGN;
}
if (ieee80211_has_a4(hdr->frame_control))
padding ^= NET_IP_ALIGN;
return padding;
#endif
}
static struct sk_buff *carl9170_rx_copy_data(u8 *buf, int len)
{
struct sk_buff *skb;
int reserved = 0;
struct ieee80211_hdr *hdr = (void *) buf;
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
reserved += NET_IP_ALIGN;
if (*qc & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
reserved += NET_IP_ALIGN;
}
if (ieee80211_has_a4(hdr->frame_control))
reserved += NET_IP_ALIGN;
reserved = 32 + (reserved & NET_IP_ALIGN);
skb = dev_alloc_skb(len + reserved);
if (likely(skb)) {
skb_reserve(skb, reserved);
memcpy(skb_put(skb, len), buf, len);
}
return skb;
}
/* This function only applies for first msdu in an msdu chain */
static bool ath10k_htt_rx_hdr_is_amsdu(struct ieee80211_hdr *hdr)
{
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
if (qc[0] & 0x80)
return true;
}
return false;
}
/*
* returns true if a packet outside BA session is a duplicate and
* should be dropped
*/
static bool iwl_mvm_is_nonagg_dup(struct ieee80211_sta *sta, int queue,
struct ieee80211_rx_status *rx_status,
struct ieee80211_hdr *hdr,
struct iwl_rx_mpdu_desc *desc)
{
struct iwl_mvm_sta *mvm_sta;
struct iwl_mvm_rxq_dup_data *dup_data;
u8 baid, tid, sub_frame_idx;
if (WARN_ON(IS_ERR_OR_NULL(sta)))
return false;
baid = (le32_to_cpu(desc->reorder_data) &
IWL_RX_MPDU_REORDER_BAID_MASK) >>
IWL_RX_MPDU_REORDER_BAID_SHIFT;
if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
return false;
mvm_sta = iwl_mvm_sta_from_mac80211(sta);
dup_data = &mvm_sta->dup_data[queue];
/*
* Drop duplicate 802.11 retransmissions
* (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
*/
if (ieee80211_is_ctl(hdr->frame_control) ||
ieee80211_is_qos_nullfunc(hdr->frame_control) ||
is_multicast_ether_addr(hdr->addr1)) {
rx_status->flag |= RX_FLAG_DUP_VALIDATED;
return false;
}
if (ieee80211_is_data_qos(hdr->frame_control))
/* frame has qos control */
tid = *ieee80211_get_qos_ctl(hdr) &
IEEE80211_QOS_CTL_TID_MASK;
else
tid = IWL_MAX_TID_COUNT;
/* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
dup_data->last_seq[tid] == hdr->seq_ctrl &&
dup_data->last_sub_frame[tid] >= sub_frame_idx))
return true;
dup_data->last_seq[tid] = hdr->seq_ctrl;
dup_data->last_sub_frame[tid] = sub_frame_idx;
rx_status->flag |= RX_FLAG_DUP_VALIDATED;
return false;
}
int ath9k_cmn_padpos(__le16 frame_control)
{
int padpos = 24;
if (ieee80211_has_a4(frame_control)) {
padpos += ETH_ALEN;
}
if (ieee80211_is_data_qos(frame_control)) {
padpos += IEEE80211_QOS_CTL_LEN;
}
return padpos;
}
static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct ieee80211_hdr *hdr, u32 len,
struct iwl_rx_phy_info *phy_info,
u32 rate_n_flags)
{
struct iwl_mvm_sta *mvmsta;
struct iwl_mvm_tcm_mac *mdata;
int mac;
int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
struct iwl_mvm_vif *mvmvif;
/* expected throughput in 100Kbps, single stream, 20 MHz */
static const u8 thresh_tpt[] = {
9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
};
u16 thr;
if (ieee80211_is_data_qos(hdr->frame_control))
ac = tid_to_mac80211_ac[ieee80211_get_tid(hdr)];
mvmsta = iwl_mvm_sta_from_mac80211(sta);
mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
schedule_delayed_work(&mvm->tcm.work, 0);
mdata = &mvm->tcm.data[mac];
mdata->rx.pkts[ac]++;
/* count the airtime only once for each ampdu */
if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
}
if (!(rate_n_flags & (RATE_MCS_HT_MSK | RATE_MCS_VHT_MSK)))
return;
mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
if (mdata->opened_rx_ba_sessions ||
mdata->uapsd_nonagg_detect.detected ||
(!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_BK].uapsd) ||
mvmsta->sta_id != mvmvif->ap_sta_id)
return;
if (rate_n_flags & RATE_MCS_HT_MSK) {
thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK];
thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >>
RATE_HT_MCS_NSS_POS);
} else {
/*
* increment traffic load value for tid and also remove
* any old values if passed the certain time period
*/
static u8 rs_tl_add_packet(struct iwl_lq_sta *lq_data,
struct ieee80211_hdr *hdr)
{
u32 curr_time = jiffies_to_msecs(jiffies);
u32 time_diff;
s32 index;
struct iwl_traffic_load *tl = NULL;
u8 tid;
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & 0xf;
} else
return IWL_MAX_TID_COUNT;
if (unlikely(tid >= IWL_MAX_TID_COUNT))
return IWL_MAX_TID_COUNT;
tl = &lq_data->load[tid];
curr_time -= curr_time % TID_ROUND_VALUE;
/* Happens only for the first packet. Initialize the data */
if (!(tl->queue_count)) {
tl->total = 1;
tl->time_stamp = curr_time;
tl->queue_count = 1;
tl->head = 0;
tl->packet_count[0] = 1;
return IWL_MAX_TID_COUNT;
}
time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time);
index = time_diff / TID_QUEUE_CELL_SPACING;
/* The history is too long: remove data that is older than */
/* TID_MAX_TIME_DIFF */
if (index >= TID_QUEUE_MAX_SIZE)
rs_tl_rm_old_stats(tl, curr_time);
index = (tl->head + index) % TID_QUEUE_MAX_SIZE;
tl->packet_count[index] = tl->packet_count[index] + 1;
tl->total = tl->total + 1;
if ((index + 1) > tl->queue_count)
tl->queue_count = index + 1;
return tid;
}
/*mac80211 Rate Control callbacks*/
static void rtl_tx_status(void *ppriv,
struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb)
{
struct rtl_priv *rtlpriv = ppriv;
struct rtl_mac *mac = rtl_mac(rtlpriv);
struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
__le16 fc = rtl_get_fc(skb);
struct rtl_sta_info *sta_entry;
if (!priv_sta || !ieee80211_is_data(fc))
return;
if (rtl_is_special_data(mac->hw, skb, true))
return;
if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
return;
if (sta) {
/* Check if aggregation has to be enabled for this tid */
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
if ((sta->ht_cap.ht_supported == true) &&
!(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
if (ieee80211_is_data_qos(fc)) {
u8 tid = rtl_get_tid(skb);
if (_rtl_tx_aggr_check(rtlpriv, sta_entry,
tid)) {
sta_entry->tids[tid].agg.agg_state =
RTL_AGG_PROGRESS;
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
/*<delete in kernel end>*/
ieee80211_start_tx_ba_session(sta, tid,
5000);
/*<delete in kernel start>*/
#else
ieee80211_start_tx_ba_session(sta, tid);
#endif
/*<delete in kernel end>*/
}
}
}
}
}
void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
/* Fill in the QoS header if there is one. */
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *p = ieee80211_get_qos_ctl(hdr);
u8 ack_policy = 0, tid;
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
if (unlikely(local->wifi_wme_noack_test))
ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK <<
QOS_CONTROL_ACK_POLICY_SHIFT;
/* qos header is 2 bytes, second reserved */
*p++ = ack_policy | tid;
*p = 0;
}
}
/**
* ieee80211_set_qos_hdr - Fill in the QoS header if there is one.
*
* @sdata: local subif
* @skb: packet to be updated
*/
void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u8 tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
u8 flags;
u8 *p;
if (!ieee80211_is_data_qos(hdr->frame_control))
return;
p = ieee80211_get_qos_ctl(hdr);
/* set up the first byte */
/*
* preserve everything but the TID and ACK policy
* (which we both write here)
*/
flags = *p & ~(IEEE80211_QOS_CTL_TID_MASK |
IEEE80211_QOS_CTL_ACK_POLICY_MASK);
if (is_multicast_ether_addr(hdr->addr1) ||
sdata->noack_map & BIT(tid)) {
flags |= IEEE80211_QOS_CTL_ACK_POLICY_NOACK;
info->flags |= IEEE80211_TX_CTL_NO_ACK;
}
*p = flags | tid;
/* set up the second byte */
p++;
if (ieee80211_vif_is_mesh(&sdata->vif)) {
/* preserve RSPI and Mesh PS Level bit */
*p &= ((IEEE80211_QOS_CTL_RSPI |
IEEE80211_QOS_CTL_MESH_PS_LEVEL) >> 8);
/* Nulls don't have a mesh header (frame body) */
if (!ieee80211_is_qos_nullfunc(hdr->frame_control))
*p |= (IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8);
} else {
static inline void mwl_rx_remove_dma_header(struct sk_buff *skb, u16 qos)
{
struct mwl_dma_data *tr;
int hdrlen;
tr = (struct mwl_dma_data *)skb->data;
hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
if (hdrlen != sizeof(tr->wh)) {
if (ieee80211_is_data_qos(tr->wh.frame_control)) {
memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
*((u16 *)(tr->data - 2)) = qos;
} else {
memmove(tr->data - hdrlen, &tr->wh, hdrlen);
}
}
if (hdrlen != sizeof(*tr))
skb_pull(skb, sizeof(*tr) - hdrlen);
}
static inline void mwl_tx_add_dma_header(struct mwl_priv *priv,
struct sk_buff *skb,
int head_pad,
int tail_pad)
{
struct ieee80211_hdr *wh;
int hdrlen;
int reqd_hdrlen;
struct mwl_dma_data *tr;
/* Add a firmware DMA header; the firmware requires that we
* present a 2-byte payload length followed by a 4-address
* header (without QoS field), followed (optionally) by any
* WEP/ExtIV header (but only filled in for CCMP).
*/
wh = (struct ieee80211_hdr *)skb->data;
hdrlen = ieee80211_hdrlen(wh->frame_control);
reqd_hdrlen = sizeof(*tr) + head_pad;
if (hdrlen != reqd_hdrlen)
skb_push(skb, reqd_hdrlen - hdrlen);
if (ieee80211_is_data_qos(wh->frame_control))
hdrlen -= IEEE80211_QOS_CTL_LEN;
tr = (struct mwl_dma_data *)skb->data;
if (wh != &tr->wh)
memmove(&tr->wh, wh, hdrlen);
if (hdrlen != sizeof(tr->wh))
memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
/* Firmware length is the length of the fully formed "802.11
* payload". That is, everything except for the 802.11 header.
* This includes all crypto material including the MIC.
*/
tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
}
static
struct iwl_tfh_tfd *iwl_pcie_gen2_build_tfd(struct iwl_trans *trans,
struct iwl_txq *txq,
struct iwl_device_cmd *dev_cmd,
struct sk_buff *skb,
struct iwl_cmd_meta *out_meta)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
struct iwl_tfh_tfd *tfd = iwl_pcie_get_tfd(trans, txq, idx);
int len, hdr_len;
bool amsdu;
/* There must be data left over for TB1 or this code must be changed */
BUILD_BUG_ON(sizeof(struct iwl_tx_cmd_gen2) < IWL_FIRST_TB_SIZE);
memset(tfd, 0, sizeof(*tfd));
if (trans->cfg->device_family < IWL_DEVICE_FAMILY_22560)
len = sizeof(struct iwl_tx_cmd_gen2);
else
len = sizeof(struct iwl_tx_cmd_gen3);
amsdu = ieee80211_is_data_qos(hdr->frame_control) &&
(*ieee80211_get_qos_ctl(hdr) &
IEEE80211_QOS_CTL_A_MSDU_PRESENT);
hdr_len = ieee80211_hdrlen(hdr->frame_control);
/*
* Only build A-MSDUs here if doing so by GSO, otherwise it may be
* an A-MSDU for other reasons, e.g. NAN or an A-MSDU having been
* built in the higher layers already.
*/
if (amsdu && skb_shinfo(skb)->gso_size)
return iwl_pcie_gen2_build_tx_amsdu(trans, txq, dev_cmd, skb,
out_meta, hdr_len, len);
return iwl_pcie_gen2_build_tx(trans, txq, dev_cmd, skb, out_meta,
hdr_len, len, !amsdu);
}
static void
minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
u16 tid;
if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
return;
if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
return;
if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
return;
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
if (likely(sta->ampdu_mlme.tid_tx[tid]))
return;
ieee80211_start_tx_ba_session(pubsta, tid, 5000);
}
/* Indicate which queue to use. */
static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (!ieee80211_is_data(hdr->frame_control)) {
/* management frames go on AC_VO queue, but are sent
* without QoS control fields */
return 0;
}
if (0 /* injected */) {
/* use AC from radiotap */
}
if (!ieee80211_is_data_qos(hdr->frame_control)) {
skb->priority = 0; /* required for correct WPA/11i MIC */
return ieee802_1d_to_ac[skb->priority];
}
/* use the data classifier to determine what 802.1d tag the
* data frame has */
skb->priority = cfg80211_classify8021d(skb);
/* in case we are a client verify acm is not set for this ac */
while (unlikely(local->wmm_acm & BIT(skb->priority))) {
if (wme_downgrade_ac(skb)) {
/*
* This should not really happen. The AP has marked all
* lower ACs to require admission control which is not
* a reasonable configuration. Allow the frame to be
* transmitted using AC_BK as a workaround.
*/
break;
}
}
/* look up which queue to use for frames with this 1d tag */
return ieee802_1d_to_ac[skb->priority];
}
static void michael_mic_hdr(struct michael_mic_ctx *mctx, const u8 *key,
struct ieee80211_hdr *hdr)
{
u8 *da, *sa, tid;
da = ieee80211_get_DA(hdr);
sa = ieee80211_get_SA(hdr);
if (ieee80211_is_data_qos(hdr->frame_control))
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
else
tid = 0;
mctx->l = get_unaligned_le32(key);
mctx->r = get_unaligned_le32(key + 4);
michael_block(mctx, get_unaligned_le32(da));
michael_block(mctx, get_unaligned_le16(&da[4]) |
(get_unaligned_le16(sa) << 16));
michael_block(mctx, get_unaligned_le32(&sa[2]));
michael_block(mctx, tid);
}
u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
struct ieee80211_tx_info *info, u8 ac)
{
__le16 fc = hdr->frame_control;
bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
if (info->band != NL80211_BAND_2GHZ)
return 0;
if (unlikely(mvm->bt_tx_prio))
return mvm->bt_tx_prio - 1;
if (likely(ieee80211_is_data(fc))) {
if (likely(ieee80211_is_data_qos(fc))) {
switch (ac) {
case IEEE80211_AC_BE:
return mplut_enabled ? 1 : 0;
case IEEE80211_AC_VI:
return mplut_enabled ? 2 : 3;
case IEEE80211_AC_VO:
return 3;
default:
return 0;
}
} else if (is_multicast_ether_addr(hdr->addr1)) {
return 3;
} else
return 0;
} else if (ieee80211_is_mgmt(fc)) {
return ieee80211_is_disassoc(fc) ? 0 : 3;
} else if (ieee80211_is_ctl(fc)) {
/* ignore cfend and cfendack frames as we never send those */
return 3;
}
return 0;
}
/* Indicate which queue to use. */
static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (!ieee80211_is_data(hdr->frame_control)) {
/* management frames go on AC_VO queue, but are sent
* without QoS control fields */
return 0;
}
if (0 /* injected */) {
/* use AC from radiotap */
}
if (!ieee80211_is_data_qos(hdr->frame_control)) {
skb->priority = 0; /* required for correct WPA/11i MIC */
return ieee802_1d_to_ac[skb->priority];
}
/* use the data classifier to determine what 802.1d tag the
* data frame has */
skb->priority = classify_1d(skb);
/* in case we are a client verify acm is not set for this ac */
while (unlikely(local->wmm_acm & BIT(skb->priority))) {
if (wme_downgrade_ac(skb)) {
/* The old code would drop the packet in this
* case.
*/
return 0;
}
}
/* look up which queue to use for frames with this 1d tag */
return ieee802_1d_to_ac[skb->priority];
}
static enum r92su_rx_control_t
r92su_rx_deduplicate(struct r92su *r92su, struct sk_buff *skb,
struct r92su_bss_priv *bss_priv)
{
struct ieee80211_hdr *i3e = (void *)skb->data;
struct r92su_rx_info *rx_info = r92su_get_rx_info(skb);
struct r92su_sta *sta = rx_info->sta;
__le16 *rx_seq;
if (sta) {
if (ieee80211_is_data_qos(i3e->frame_control))
rx_seq = &sta->rx_seq_tid[get_tid_h(i3e)];
else
rx_seq = &sta->rx_seq;
if (*rx_seq == i3e->seq_ctrl) {
sta->drop_dup++;
return RX_DROP;
}
*rx_seq = i3e->seq_ctrl;
}
return RX_CONTINUE;
}
/* Indicate which queue to use for this fully formed 802.11 frame */
u16 ieee80211_select_queue_80211(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb,
struct ieee80211_hdr *hdr)
{
struct ieee80211_local *local = sdata->local;
u8 *p;
if (local->hw.queues < IEEE80211_NUM_ACS)
return 0;
if (!ieee80211_is_data(hdr->frame_control)) {
skb->priority = 7;
return ieee802_1d_to_ac[skb->priority];
}
if (!ieee80211_is_data_qos(hdr->frame_control)) {
skb->priority = 0;
return ieee802_1d_to_ac[skb->priority];
}
p = ieee80211_get_qos_ctl(hdr);
skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK;
return ieee80211_downgrade_queue(sdata, skb);
}
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;
}
static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
int encrypted)
{
__le16 mask_fc;
int a4_included;
u8 qos_tid;
u8 *b_0, *aad;
u16 data_len, len_a;
unsigned int hdrlen;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
b_0 = scratch + 3 * AES_BLOCK_LEN;
aad = scratch + 4 * AES_BLOCK_LEN;
/*
* Mask FC: zero subtype b4 b5 b6
* Retry, PwrMgt, MoreData; set Protected
*/
mask_fc = hdr->frame_control;
mask_fc &= ~cpu_to_le16(0x0070 | IEEE80211_FCTL_RETRY |
IEEE80211_FCTL_PM | IEEE80211_FCTL_MOREDATA);
mask_fc |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
hdrlen = ieee80211_hdrlen(hdr->frame_control);
len_a = hdrlen - 2;
a4_included = ieee80211_has_a4(hdr->frame_control);
if (ieee80211_is_data_qos(hdr->frame_control))
qos_tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
else
qos_tid = 0;
data_len = skb->len - hdrlen - CCMP_HDR_LEN;
if (encrypted)
data_len -= CCMP_MIC_LEN;
/* First block, b_0 */
b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
/* Nonce: QoS Priority | A2 | PN */
b_0[1] = qos_tid;
memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
memcpy(&b_0[8], pn, CCMP_PN_LEN);
/* l(m) */
put_unaligned_be16(data_len, &b_0[14]);
/* AAD (extra authenticate-only data) / masked 802.11 header
* FC | A1 | A2 | A3 | SC | [A4] | [QC] */
put_unaligned_be16(len_a, &aad[0]);
put_unaligned(mask_fc, (__le16 *)&aad[2]);
memcpy(&aad[4], &hdr->addr1, 3 * ETH_ALEN);
/* Mask Seq#, leave Frag# */
aad[22] = *((u8 *) &hdr->seq_ctrl) & 0x0f;
aad[23] = 0;
if (a4_included) {
memcpy(&aad[24], hdr->addr4, ETH_ALEN);
aad[30] = qos_tid;
aad[31] = 0;
} else {
memset(&aad[24], 0, ETH_ALEN + IEEE80211_QOS_CTL_LEN);
aad[24] = qos_tid;
}
}
/**
* rsi_core_xmit() - This function transmits the packets received from mac80211
* @common: Pointer to the driver private structure.
* @skb: Pointer to the socket buffer structure.
*
* Return: None.
*/
void rsi_core_xmit(struct rsi_common *common, struct sk_buff *skb)
{
struct rsi_hw *adapter = common->priv;
struct ieee80211_tx_info *info;
struct skb_info *tx_params;
struct ieee80211_hdr *wh = NULL;
struct ieee80211_vif *vif;
u8 q_num, tid = 0;
struct rsi_sta *rsta = NULL;
if ((!skb) || (!skb->len)) {
rsi_dbg(ERR_ZONE, "%s: Null skb/zero Length packet\n",
__func__);
goto xmit_fail;
}
if (common->fsm_state != FSM_MAC_INIT_DONE) {
rsi_dbg(ERR_ZONE, "%s: FSM state not open\n", __func__);
goto xmit_fail;
}
if (common->wow_flags & RSI_WOW_ENABLED) {
rsi_dbg(ERR_ZONE,
"%s: Blocking Tx_packets when WOWLAN is enabled\n",
__func__);
goto xmit_fail;
}
info = IEEE80211_SKB_CB(skb);
tx_params = (struct skb_info *)info->driver_data;
wh = (struct ieee80211_hdr *)&skb->data[0];
tx_params->sta_id = 0;
vif = rsi_get_vif(adapter, wh->addr2);
if (!vif)
goto xmit_fail;
tx_params->vif = vif;
tx_params->vap_id = ((struct vif_priv *)vif->drv_priv)->vap_id;
if ((ieee80211_is_mgmt(wh->frame_control)) ||
(ieee80211_is_ctl(wh->frame_control)) ||
(ieee80211_is_qos_nullfunc(wh->frame_control))) {
if (ieee80211_is_assoc_req(wh->frame_control) ||
ieee80211_is_reassoc_req(wh->frame_control)) {
struct ieee80211_bss_conf *bss = &vif->bss_conf;
common->eapol4_confirm = false;
rsi_hal_send_sta_notify_frame(common,
RSI_IFTYPE_STATION,
STA_CONNECTED, bss->bssid,
bss->qos, bss->aid, 0,
vif);
}
q_num = MGMT_SOFT_Q;
skb->priority = q_num;
if (rsi_prepare_mgmt_desc(common, skb)) {
rsi_dbg(ERR_ZONE, "Failed to prepare desc\n");
goto xmit_fail;
}
} else {
if (ieee80211_is_data_qos(wh->frame_control)) {
u8 *qos = ieee80211_get_qos_ctl(wh);
tid = *qos & IEEE80211_QOS_CTL_TID_MASK;
skb->priority = TID_TO_WME_AC(tid);
} else {
tid = IEEE80211_NONQOS_TID;
skb->priority = BE_Q;
}
q_num = skb->priority;
tx_params->tid = tid;
if (((vif->type == NL80211_IFTYPE_AP) ||
(vif->type == NL80211_IFTYPE_P2P_GO)) &&
(!is_broadcast_ether_addr(wh->addr1)) &&
(!is_multicast_ether_addr(wh->addr1))) {
rsta = rsi_find_sta(common, wh->addr1);
if (!rsta)
goto xmit_fail;
tx_params->sta_id = rsta->sta_id;
} else {
tx_params->sta_id = 0;
}
if (rsta) {
/* Start aggregation if not done for this tid */
if (!rsta->start_tx_aggr[tid]) {
rsta->start_tx_aggr[tid] = true;
ieee80211_start_tx_ba_session(rsta->sta,
tid, 0);
}
}
if (skb->protocol == cpu_to_be16(ETH_P_PAE)) {
q_num = MGMT_SOFT_Q;
skb->priority = q_num;
}
if (rsi_prepare_data_desc(common, skb)) {
rsi_dbg(ERR_ZONE, "Failed to prepare data desc\n");
goto xmit_fail;
}
}
if ((q_num < MGMT_SOFT_Q) &&
((skb_queue_len(&common->tx_queue[q_num]) + 1) >=
DATA_QUEUE_WATER_MARK)) {
rsi_dbg(ERR_ZONE, "%s: sw queue full\n", __func__);
if (!ieee80211_queue_stopped(adapter->hw, WME_AC(q_num)))
ieee80211_stop_queue(adapter->hw, WME_AC(q_num));
rsi_set_event(&common->tx_thread.event);
goto xmit_fail;
}
rsi_core_queue_pkt(common, skb);
rsi_dbg(DATA_TX_ZONE, "%s: ===> Scheduling TX thread <===\n", __func__);
rsi_set_event(&common->tx_thread.event);
return;
xmit_fail:
rsi_dbg(ERR_ZONE, "%s: Failed to queue packet\n", __func__);
/* Dropping pkt here */
ieee80211_free_txskb(common->priv->hw, skb);
}
