// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* File: rxtx.c
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*
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* Purpose: handle WMAC/802.3/802.11 rx & tx functions
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*
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* Author: Lyndon Chen
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*
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* Date: May 20, 2003
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*
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* Functions:
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* vnt_generate_tx_parameter - Generate tx dma required parameter.
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* vnt_get_rsvtime- get frame reserved time
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* vnt_fill_cts_head- fulfill CTS ctl header
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*
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* Revision History:
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*
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*/
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#include <linux/etherdevice.h>
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#include "device.h"
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#include "rxtx.h"
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#include "card.h"
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#include "mac.h"
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#include "rf.h"
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#include "usbpipe.h"
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static const u16 vnt_time_stampoff[2][MAX_RATE] = {
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/* Long Preamble */
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{384, 288, 226, 209, 54, 43, 37, 31, 28, 25, 24, 23},
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/* Short Preamble */
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{384, 192, 130, 113, 54, 43, 37, 31, 28, 25, 24, 23},
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};
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#define DATADUR_B 10
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#define DATADUR_A 11
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static const u8 vnt_phy_signal[] = {
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0x00, /* RATE_1M */
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0x01, /* RATE_2M */
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0x02, /* RATE_5M */
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0x03, /* RATE_11M */
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0x8b, /* RATE_6M */
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0x8f, /* RATE_9M */
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0x8a, /* RATE_12M */
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0x8e, /* RATE_18M */
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0x89, /* RATE_24M */
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0x8d, /* RATE_36M */
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0x88, /* RATE_48M */
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0x8c /* RATE_54M */
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};
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static struct vnt_usb_send_context
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*vnt_get_free_context(struct vnt_private *priv)
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{
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struct vnt_usb_send_context *context = NULL;
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int ii;
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dev_dbg(&priv->usb->dev, "%s\n", __func__);
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for (ii = 0; ii < priv->num_tx_context; ii++) {
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if (!priv->tx_context[ii])
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return NULL;
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context = priv->tx_context[ii];
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if (!context->in_use) {
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context->in_use = true;
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return context;
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}
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}
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if (ii == priv->num_tx_context) {
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dev_dbg(&priv->usb->dev, "%s No Free Tx Context\n", __func__);
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ieee80211_stop_queues(priv->hw);
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}
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return NULL;
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}
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/* Get Length, Service, and Signal fields of Phy for Tx */
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static void vnt_get_phy_field(struct vnt_private *priv, u32 frame_length,
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u16 tx_rate, u8 pkt_type,
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struct vnt_phy_field *phy)
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{
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u32 bit_count;
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u32 count = 0;
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u32 tmp;
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int ext_bit;
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int i;
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u8 mask = 0;
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u8 preamble_type = priv->preamble_type;
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bit_count = frame_length * 8;
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ext_bit = false;
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switch (tx_rate) {
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case RATE_1M:
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count = bit_count;
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break;
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case RATE_2M:
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count = bit_count / 2;
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break;
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case RATE_5M:
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count = DIV_ROUND_UP(bit_count * 10, 55);
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break;
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case RATE_11M:
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count = bit_count / 11;
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tmp = count * 11;
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if (tmp != bit_count) {
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count++;
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if ((bit_count - tmp) <= 3)
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ext_bit = true;
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}
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break;
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}
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if (tx_rate > RATE_11M) {
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if (pkt_type == PK_TYPE_11A)
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mask = BIT(4);
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} else if (tx_rate > RATE_1M) {
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if (preamble_type == PREAMBLE_SHORT)
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mask = BIT(3);
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}
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i = tx_rate > RATE_54M ? RATE_54M : tx_rate;
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phy->signal = vnt_phy_signal[i] | mask;
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phy->service = 0x00;
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if (pkt_type == PK_TYPE_11B) {
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if (ext_bit)
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phy->service |= 0x80;
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phy->len = cpu_to_le16((u16)count);
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} else {
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phy->len = cpu_to_le16((u16)frame_length);
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}
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}
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static __le16 vnt_time_stamp_off(struct vnt_private *priv, u16 rate)
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{
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return cpu_to_le16(vnt_time_stampoff[priv->preamble_type % 2]
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[rate % MAX_RATE]);
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}
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static __le16 vnt_rxtx_rsvtime_le16(struct vnt_usb_send_context *context)
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{
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struct vnt_private *priv = context->priv;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
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struct ieee80211_rate *rate = ieee80211_get_tx_rate(priv->hw, info);
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return ieee80211_generic_frame_duration(priv->hw,
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info->control.vif, info->band,
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context->frame_len,
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rate);
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}
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static __le16 vnt_get_rts_duration(struct vnt_usb_send_context *context)
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{
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struct vnt_private *priv = context->priv;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
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return ieee80211_rts_duration(priv->hw, priv->vif,
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context->frame_len, info);
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}
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static __le16 vnt_get_cts_duration(struct vnt_usb_send_context *context)
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{
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struct vnt_private *priv = context->priv;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
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return ieee80211_ctstoself_duration(priv->hw, priv->vif,
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context->frame_len, info);
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}
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static void vnt_rxtx_datahead_g(struct vnt_usb_send_context *tx_context,
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struct vnt_tx_datahead_g *buf)
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{
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struct vnt_private *priv = tx_context->priv;
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struct ieee80211_hdr *hdr =
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(struct ieee80211_hdr *)tx_context->skb->data;
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u32 frame_len = tx_context->frame_len;
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u16 rate = tx_context->tx_rate;
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/* Get SignalField,ServiceField,Length */
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vnt_get_phy_field(priv, frame_len, rate, tx_context->pkt_type, &buf->a);
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vnt_get_phy_field(priv, frame_len, priv->top_cck_basic_rate,
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PK_TYPE_11B, &buf->b);
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/* Get Duration and TimeStamp */
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buf->duration_a = hdr->duration_id;
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buf->duration_b = hdr->duration_id;
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buf->time_stamp_off_a = vnt_time_stamp_off(priv, rate);
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buf->time_stamp_off_b = vnt_time_stamp_off(priv,
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priv->top_cck_basic_rate);
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}
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static void vnt_rxtx_datahead_ab(struct vnt_usb_send_context *tx_context,
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struct vnt_tx_datahead_ab *buf)
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{
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struct vnt_private *priv = tx_context->priv;
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struct ieee80211_hdr *hdr =
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(struct ieee80211_hdr *)tx_context->skb->data;
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u32 frame_len = tx_context->frame_len;
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u16 rate = tx_context->tx_rate;
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/* Get SignalField,ServiceField,Length */
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vnt_get_phy_field(priv, frame_len, rate,
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tx_context->pkt_type, &buf->ab);
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/* Get Duration and TimeStampOff */
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buf->duration = hdr->duration_id;
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buf->time_stamp_off = vnt_time_stamp_off(priv, rate);
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}
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static void vnt_fill_ieee80211_rts(struct vnt_usb_send_context *tx_context,
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struct ieee80211_rts *rts, __le16 duration)
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{
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struct ieee80211_hdr *hdr =
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(struct ieee80211_hdr *)tx_context->skb->data;
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rts->duration = duration;
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rts->frame_control =
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cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
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ether_addr_copy(rts->ra, hdr->addr1);
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ether_addr_copy(rts->ta, hdr->addr2);
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}
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static void vnt_rxtx_rts_g_head(struct vnt_usb_send_context *tx_context,
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struct vnt_rts_g *buf)
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{
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struct vnt_private *priv = tx_context->priv;
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u16 rts_frame_len = 20;
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vnt_get_phy_field(priv, rts_frame_len, priv->top_cck_basic_rate,
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PK_TYPE_11B, &buf->b);
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vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate,
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tx_context->pkt_type, &buf->a);
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buf->duration_bb = vnt_get_rts_duration(tx_context);
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buf->duration_aa = buf->duration_bb;
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buf->duration_ba = buf->duration_bb;
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vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration_aa);
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vnt_rxtx_datahead_g(tx_context, &buf->data_head);
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}
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static void vnt_rxtx_rts_ab_head(struct vnt_usb_send_context *tx_context,
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struct vnt_rts_ab *buf)
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{
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struct vnt_private *priv = tx_context->priv;
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u16 rts_frame_len = 20;
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vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate,
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tx_context->pkt_type, &buf->ab);
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buf->duration = vnt_get_rts_duration(tx_context);
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vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration);
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vnt_rxtx_datahead_ab(tx_context, &buf->data_head);
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}
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static void vnt_fill_cts_head(struct vnt_usb_send_context *tx_context,
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union vnt_tx_data_head *head)
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{
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struct vnt_private *priv = tx_context->priv;
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struct vnt_cts *buf = &head->cts_g;
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u32 cts_frame_len = 14;
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/* Get SignalField,ServiceField,Length */
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vnt_get_phy_field(priv, cts_frame_len, priv->top_cck_basic_rate,
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PK_TYPE_11B, &buf->b);
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/* Get CTSDuration_ba */
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buf->duration_ba = vnt_get_cts_duration(tx_context);
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/*Get CTS Frame body*/
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buf->data.duration = buf->duration_ba;
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buf->data.frame_control =
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cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
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ether_addr_copy(buf->data.ra, priv->current_net_addr);
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vnt_rxtx_datahead_g(tx_context, &buf->data_head);
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}
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/* returns true if mic_hdr is needed */
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static bool vnt_fill_txkey(struct vnt_tx_buffer *tx_buffer, struct sk_buff *skb)
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{
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struct vnt_tx_fifo_head *fifo = &tx_buffer->fifo_head;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct ieee80211_key_conf *tx_key = info->control.hw_key;
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struct vnt_mic_hdr *mic_hdr;
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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u64 pn64;
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u16 payload_len = skb->len;
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u8 *iv = ((u8 *)hdr + ieee80211_get_hdrlen_from_skb(skb));
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/* strip header and icv len from payload */
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payload_len -= ieee80211_get_hdrlen_from_skb(skb);
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payload_len -= tx_key->icv_len;
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switch (tx_key->cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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memcpy(fifo->tx_key, iv, 3);
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memcpy(fifo->tx_key + 3, tx_key->key, tx_key->keylen);
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if (tx_key->keylen == WLAN_KEY_LEN_WEP40) {
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memcpy(fifo->tx_key + 8, iv, 3);
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memcpy(fifo->tx_key + 11,
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tx_key->key, WLAN_KEY_LEN_WEP40);
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}
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fifo->frag_ctl |= cpu_to_le16(FRAGCTL_LEGACY);
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break;
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case WLAN_CIPHER_SUITE_TKIP:
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ieee80211_get_tkip_p2k(tx_key, skb, fifo->tx_key);
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fifo->frag_ctl |= cpu_to_le16(FRAGCTL_TKIP);
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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if (info->control.use_cts_prot) {
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if (info->control.use_rts)
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mic_hdr = &tx_buffer->tx_head.tx_rts.tx.mic.hdr;
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else
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mic_hdr = &tx_buffer->tx_head.tx_cts.tx.mic.hdr;
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} else {
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mic_hdr = &tx_buffer->tx_head.tx_ab.tx.mic.hdr;
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}
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mic_hdr->id = 0x59;
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mic_hdr->payload_len = cpu_to_be16(payload_len);
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ether_addr_copy(mic_hdr->mic_addr2, hdr->addr2);
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pn64 = atomic64_read(&tx_key->tx_pn);
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mic_hdr->ccmp_pn[5] = pn64;
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mic_hdr->ccmp_pn[4] = pn64 >> 8;
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mic_hdr->ccmp_pn[3] = pn64 >> 16;
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mic_hdr->ccmp_pn[2] = pn64 >> 24;
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mic_hdr->ccmp_pn[1] = pn64 >> 32;
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mic_hdr->ccmp_pn[0] = pn64 >> 40;
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if (ieee80211_has_a4(hdr->frame_control))
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mic_hdr->hlen = cpu_to_be16(28);
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else
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mic_hdr->hlen = cpu_to_be16(22);
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ether_addr_copy(mic_hdr->addr1, hdr->addr1);
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ether_addr_copy(mic_hdr->addr2, hdr->addr2);
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ether_addr_copy(mic_hdr->addr3, hdr->addr3);
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mic_hdr->frame_control = cpu_to_le16(
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le16_to_cpu(hdr->frame_control) & 0xc78f);
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mic_hdr->seq_ctrl = cpu_to_le16(
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le16_to_cpu(hdr->seq_ctrl) & 0xf);
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if (ieee80211_has_a4(hdr->frame_control))
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ether_addr_copy(mic_hdr->addr4, hdr->addr4);
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memcpy(fifo->tx_key, tx_key->key, WLAN_KEY_LEN_CCMP);
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fifo->frag_ctl |= cpu_to_le16(FRAGCTL_AES);
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return true;
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default:
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break;
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}
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return false;
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}
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static void vnt_rxtx_rts(struct vnt_usb_send_context *tx_context)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
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struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
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union vnt_tx_head *tx_head = &tx_buffer->tx_head;
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struct vnt_rrv_time_rts *buf = &tx_head->tx_rts.rts;
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union vnt_tx_data_head *head = &tx_head->tx_rts.tx.head;
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buf->rts_rrv_time_aa = vnt_get_rts_duration(tx_context);
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buf->rts_rrv_time_ba = buf->rts_rrv_time_aa;
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buf->rts_rrv_time_bb = buf->rts_rrv_time_aa;
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buf->rrv_time_a = vnt_rxtx_rsvtime_le16(tx_context);
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buf->rrv_time_b = buf->rrv_time_a;
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if (info->control.hw_key) {
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if (vnt_fill_txkey(tx_buffer, tx_context->skb))
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head = &tx_head->tx_rts.tx.mic.head;
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}
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vnt_rxtx_rts_g_head(tx_context, &head->rts_g);
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}
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static void vnt_rxtx_cts(struct vnt_usb_send_context *tx_context)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
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struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
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union vnt_tx_head *tx_head = &tx_buffer->tx_head;
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struct vnt_rrv_time_cts *buf = &tx_head->tx_cts.cts;
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union vnt_tx_data_head *head = &tx_head->tx_cts.tx.head;
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buf->rrv_time_a = vnt_rxtx_rsvtime_le16(tx_context);
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buf->rrv_time_b = buf->rrv_time_a;
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buf->cts_rrv_time_ba = vnt_get_cts_duration(tx_context);
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if (info->control.hw_key) {
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if (vnt_fill_txkey(tx_buffer, tx_context->skb))
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head = &tx_head->tx_cts.tx.mic.head;
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}
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vnt_fill_cts_head(tx_context, head);
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}
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static void vnt_rxtx_ab(struct vnt_usb_send_context *tx_context)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
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struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
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union vnt_tx_head *tx_head = &tx_buffer->tx_head;
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struct vnt_rrv_time_ab *buf = &tx_head->tx_ab.ab;
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union vnt_tx_data_head *head = &tx_head->tx_ab.tx.head;
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buf->rrv_time = vnt_rxtx_rsvtime_le16(tx_context);
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if (info->control.hw_key) {
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if (vnt_fill_txkey(tx_buffer, tx_context->skb))
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head = &tx_head->tx_ab.tx.mic.head;
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}
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if (info->control.use_rts) {
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buf->rts_rrv_time = vnt_get_rts_duration(tx_context);
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vnt_rxtx_rts_ab_head(tx_context, &head->rts_ab);
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return;
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}
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vnt_rxtx_datahead_ab(tx_context, &head->data_head_ab);
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}
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static void vnt_generate_tx_parameter(struct vnt_usb_send_context *tx_context)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
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if (info->control.use_cts_prot) {
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if (info->control.use_rts) {
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vnt_rxtx_rts(tx_context);
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return;
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}
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vnt_rxtx_cts(tx_context);
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return;
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}
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vnt_rxtx_ab(tx_context);
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}
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static u16 vnt_get_hdr_size(struct ieee80211_tx_info *info)
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{
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u16 size = sizeof(struct vnt_tx_datahead_ab);
|
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if (info->control.use_cts_prot) {
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if (info->control.use_rts)
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size = sizeof(struct vnt_rts_g);
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else
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size = sizeof(struct vnt_cts);
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} else if (info->control.use_rts) {
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size = sizeof(struct vnt_rts_ab);
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}
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if (info->control.hw_key) {
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if (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP)
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size += sizeof(struct vnt_mic_hdr);
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}
|
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/* Get rrv_time header */
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if (info->control.use_cts_prot) {
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if (info->control.use_rts)
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size += sizeof(struct vnt_rrv_time_rts);
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else
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size += sizeof(struct vnt_rrv_time_cts);
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} else {
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size += sizeof(struct vnt_rrv_time_ab);
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}
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size += sizeof(struct vnt_tx_fifo_head);
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return size;
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}
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int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct ieee80211_tx_rate *tx_rate = &info->control.rates[0];
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struct ieee80211_rate *rate;
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struct ieee80211_hdr *hdr;
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struct vnt_tx_buffer *tx_buffer;
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struct vnt_tx_fifo_head *tx_buffer_head;
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struct vnt_usb_send_context *tx_context;
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unsigned long flags;
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u8 pkt_type;
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hdr = (struct ieee80211_hdr *)(skb->data);
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rate = ieee80211_get_tx_rate(priv->hw, info);
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if (rate->hw_value > RATE_11M) {
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if (info->band == NL80211_BAND_5GHZ) {
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pkt_type = PK_TYPE_11A;
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} else {
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if (tx_rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
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if (priv->basic_rates & VNT_B_RATES)
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pkt_type = PK_TYPE_11GB;
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else
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pkt_type = PK_TYPE_11GA;
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} else {
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pkt_type = PK_TYPE_11A;
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}
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}
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} else {
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pkt_type = PK_TYPE_11B;
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}
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spin_lock_irqsave(&priv->lock, flags);
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tx_context = vnt_get_free_context(priv);
|
if (!tx_context) {
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dev_dbg(&priv->usb->dev, "%s No free context\n", __func__);
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spin_unlock_irqrestore(&priv->lock, flags);
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return -ENOMEM;
|
}
|
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tx_context->pkt_type = pkt_type;
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tx_context->frame_len = skb->len + 4;
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tx_context->tx_rate = rate->hw_value;
|
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spin_unlock_irqrestore(&priv->lock, flags);
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tx_context->skb = skb_clone(skb, GFP_ATOMIC);
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if (!tx_context->skb) {
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tx_context->in_use = false;
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return -ENOMEM;
|
}
|
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tx_buffer = skb_push(skb, vnt_get_hdr_size(info));
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tx_context->tx_buffer = tx_buffer;
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tx_buffer_head = &tx_buffer->fifo_head;
|
|
tx_context->type = CONTEXT_DATA_PACKET;
|
|
/*Set fifo controls */
|
if (pkt_type == PK_TYPE_11A)
|
tx_buffer_head->fifo_ctl = 0;
|
else if (pkt_type == PK_TYPE_11B)
|
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11B);
|
else if (pkt_type == PK_TYPE_11GB)
|
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GB);
|
else if (pkt_type == PK_TYPE_11GA)
|
tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GA);
|
|
if (!ieee80211_is_data(hdr->frame_control)) {
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_GENINT |
|
FIFOCTL_ISDMA0);
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_TMOEN);
|
|
tx_buffer_head->time_stamp =
|
cpu_to_le16(DEFAULT_MGN_LIFETIME_RES_64us);
|
} else {
|
tx_buffer_head->time_stamp =
|
cpu_to_le16(DEFAULT_MSDU_LIFETIME_RES_64us);
|
}
|
|
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_NEEDACK);
|
|
if (ieee80211_has_retry(hdr->frame_control))
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LRETRY);
|
|
if (info->control.use_rts)
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_RTS);
|
|
if (ieee80211_has_a4(hdr->frame_control))
|
tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LHEAD);
|
|
tx_buffer_head->frag_ctl =
|
cpu_to_le16(ieee80211_hdrlen(hdr->frame_control) << 10);
|
|
if (info->control.hw_key)
|
tx_context->frame_len += info->control.hw_key->icv_len;
|
|
tx_buffer_head->current_rate = cpu_to_le16(rate->hw_value);
|
|
vnt_generate_tx_parameter(tx_context);
|
|
tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_NONFRAG);
|
|
priv->seq_counter = (le16_to_cpu(hdr->seq_ctrl) &
|
IEEE80211_SCTL_SEQ) >> 4;
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (vnt_tx_context(priv, tx_context, skb)) {
|
dev_kfree_skb(tx_context->skb);
|
spin_unlock_irqrestore(&priv->lock, flags);
|
return -EIO;
|
}
|
|
dev_kfree_skb(skb);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return 0;
|
}
|
|
static int vnt_beacon_xmit(struct vnt_private *priv, struct sk_buff *skb)
|
{
|
struct vnt_tx_short_buf_head *short_head;
|
struct ieee80211_tx_info *info;
|
struct vnt_usb_send_context *context;
|
struct ieee80211_mgmt *mgmt_hdr;
|
unsigned long flags;
|
u32 frame_size = skb->len + 4;
|
u16 current_rate;
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
context = vnt_get_free_context(priv);
|
if (!context) {
|
dev_dbg(&priv->usb->dev, "%s No free context!\n", __func__);
|
spin_unlock_irqrestore(&priv->lock, flags);
|
return -ENOMEM;
|
}
|
|
context->skb = skb;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
mgmt_hdr = (struct ieee80211_mgmt *)skb->data;
|
short_head = skb_push(skb, sizeof(*short_head));
|
|
if (priv->bb_type == BB_TYPE_11A) {
|
current_rate = RATE_6M;
|
|
/* Get SignalField,ServiceField,Length */
|
vnt_get_phy_field(priv, frame_size, current_rate,
|
PK_TYPE_11A, &short_head->ab);
|
|
/* Get TimeStampOff */
|
short_head->time_stamp_off =
|
vnt_time_stamp_off(priv, current_rate);
|
} else {
|
current_rate = RATE_1M;
|
short_head->fifo_ctl |= cpu_to_le16(FIFOCTL_11B);
|
|
/* Get SignalField,ServiceField,Length */
|
vnt_get_phy_field(priv, frame_size, current_rate,
|
PK_TYPE_11B, &short_head->ab);
|
|
/* Get TimeStampOff */
|
short_head->time_stamp_off =
|
vnt_time_stamp_off(priv, current_rate);
|
}
|
|
/* Get Duration */
|
short_head->duration = mgmt_hdr->duration;
|
|
/* time stamp always 0 */
|
mgmt_hdr->u.beacon.timestamp = 0;
|
|
info = IEEE80211_SKB_CB(skb);
|
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)mgmt_hdr;
|
|
hdr->duration_id = 0;
|
hdr->seq_ctrl = cpu_to_le16(priv->seq_counter << 4);
|
}
|
|
priv->seq_counter++;
|
if (priv->seq_counter > 0x0fff)
|
priv->seq_counter = 0;
|
|
context->type = CONTEXT_BEACON_PACKET;
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (vnt_tx_context(priv, context, skb))
|
ieee80211_free_txskb(priv->hw, context->skb);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return 0;
|
}
|
|
int vnt_beacon_make(struct vnt_private *priv, struct ieee80211_vif *vif)
|
{
|
struct sk_buff *beacon;
|
|
beacon = ieee80211_beacon_get(priv->hw, vif);
|
if (!beacon)
|
return -ENOMEM;
|
|
if (vnt_beacon_xmit(priv, beacon)) {
|
ieee80211_free_txskb(priv->hw, beacon);
|
return -ENODEV;
|
}
|
|
return 0;
|
}
|
|
int vnt_beacon_enable(struct vnt_private *priv, struct ieee80211_vif *vif,
|
struct ieee80211_bss_conf *conf)
|
{
|
vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
|
|
vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
|
|
vnt_mac_set_beacon_interval(priv, conf->beacon_int);
|
|
vnt_clear_current_tsf(priv);
|
|
vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
|
|
vnt_reset_next_tbtt(priv, conf->beacon_int);
|
|
return vnt_beacon_make(priv, vif);
|
}
|
