![Colin Ian King](/assets/img/avatar_default.png)
Variables rx_sts, sq, frame and is_pspoll are being assigned but are never used hence they are redundant and can be removed. Cleans up clang warnings: warning: variable 'sq' set but not used [-Wunused-but-set-variable] warning: variable 'rx_sts' set but not used [-Wunused-but-set-variable] warning: variable 'frame' set but not used [-Wunused-but-set-variable] warning: variable 'is_pspoll' set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
148 lines
3.2 KiB
C
148 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* File: dpc.c
|
|
*
|
|
* Purpose: handle dpc rx functions
|
|
*
|
|
* Author: Lyndon Chen
|
|
*
|
|
* Date: May 20, 2003
|
|
*
|
|
* Functions:
|
|
*
|
|
* Revision History:
|
|
*
|
|
*/
|
|
|
|
#include "device.h"
|
|
#include "baseband.h"
|
|
#include "rf.h"
|
|
#include "dpc.h"
|
|
|
|
static bool vnt_rx_data(struct vnt_private *priv, struct sk_buff *skb,
|
|
u16 bytes_received)
|
|
{
|
|
struct ieee80211_hw *hw = priv->hw;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_rx_status rx_status = { 0 };
|
|
struct ieee80211_hdr *hdr;
|
|
__le16 fc;
|
|
u8 *rsr, *new_rsr, *rssi;
|
|
__le64 *tsf_time;
|
|
u16 frame_size;
|
|
int ii, r;
|
|
u8 *rx_rate;
|
|
u8 *skb_data;
|
|
u8 rate_idx = 0;
|
|
u8 rate[MAX_RATE] = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
|
|
long rx_dbm;
|
|
|
|
/* [31:16]RcvByteCount ( not include 4-byte Status ) */
|
|
frame_size = le16_to_cpu(*((__le16 *)(skb->data + 2)));
|
|
if (frame_size > 2346 || frame_size < 14) {
|
|
dev_dbg(&priv->pcid->dev, "------- WRONG Length 1\n");
|
|
return false;
|
|
}
|
|
|
|
skb_data = (u8 *)skb->data;
|
|
|
|
rx_rate = skb_data + 1;
|
|
|
|
sband = hw->wiphy->bands[hw->conf.chandef.chan->band];
|
|
|
|
for (r = RATE_1M; r < MAX_RATE; r++) {
|
|
if (*rx_rate == rate[r])
|
|
break;
|
|
}
|
|
|
|
priv->rx_rate = r;
|
|
|
|
for (ii = 0; ii < sband->n_bitrates; ii++) {
|
|
if (sband->bitrates[ii].hw_value == r) {
|
|
rate_idx = ii;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ii == sband->n_bitrates) {
|
|
dev_dbg(&priv->pcid->dev, "Wrong RxRate %x\n", *rx_rate);
|
|
return false;
|
|
}
|
|
|
|
tsf_time = (__le64 *)(skb_data + bytes_received - 12);
|
|
new_rsr = skb_data + bytes_received - 3;
|
|
rssi = skb_data + bytes_received - 2;
|
|
rsr = skb_data + bytes_received - 1;
|
|
if (*rsr & (RSR_IVLDTYP | RSR_IVLDLEN))
|
|
return false;
|
|
|
|
RFvRSSITodBm(priv, *rssi, &rx_dbm);
|
|
|
|
priv->byBBPreEDRSSI = (u8)rx_dbm + 1;
|
|
priv->uCurrRSSI = *rssi;
|
|
|
|
skb_pull(skb, 4);
|
|
skb_trim(skb, frame_size);
|
|
|
|
rx_status.mactime = le64_to_cpu(*tsf_time);
|
|
rx_status.band = hw->conf.chandef.chan->band;
|
|
rx_status.signal = rx_dbm;
|
|
rx_status.flag = 0;
|
|
rx_status.freq = hw->conf.chandef.chan->center_freq;
|
|
|
|
if (!(*rsr & RSR_CRCOK))
|
|
rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
|
|
|
|
hdr = (struct ieee80211_hdr *)(skb->data);
|
|
fc = hdr->frame_control;
|
|
|
|
rx_status.rate_idx = rate_idx;
|
|
|
|
if (ieee80211_has_protected(fc)) {
|
|
if (priv->byLocalID > REV_ID_VT3253_A1)
|
|
rx_status.flag |= RX_FLAG_DECRYPTED;
|
|
|
|
/* Drop packet */
|
|
if (!(*new_rsr & NEWRSR_DECRYPTOK))
|
|
return false;
|
|
}
|
|
|
|
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
|
|
|
|
ieee80211_rx_irqsafe(priv->hw, skb);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool vnt_receive_frame(struct vnt_private *priv, struct vnt_rx_desc *curr_rd)
|
|
{
|
|
struct vnt_rd_info *rd_info = curr_rd->rd_info;
|
|
struct sk_buff *skb;
|
|
u16 frame_size;
|
|
|
|
skb = rd_info->skb;
|
|
|
|
dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
|
|
priv->rx_buf_sz, DMA_FROM_DEVICE);
|
|
|
|
frame_size = le16_to_cpu(curr_rd->rd1.req_count)
|
|
- le16_to_cpu(curr_rd->rd0.res_count);
|
|
|
|
if ((frame_size > 2364) || (frame_size < 33)) {
|
|
/* Frame Size error drop this packet.*/
|
|
dev_dbg(&priv->pcid->dev, "Wrong frame size %d\n", frame_size);
|
|
dev_kfree_skb_irq(skb);
|
|
return true;
|
|
}
|
|
|
|
if (vnt_rx_data(priv, skb, frame_size))
|
|
return true;
|
|
|
|
dev_kfree_skb_irq(skb);
|
|
|
|
return true;
|
|
}
|