// SPDX-License-Identifier: GPL-2.0
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/******************************************************************************
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* rtl871x_xmit.c
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*
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* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
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* Linux device driver for RTL8192SU
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*
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* Modifications for inclusion into the Linux staging tree are
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* Copyright(c) 2010 Larry Finger. All rights reserved.
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*
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* Contact information:
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* WLAN FAE <wlanfae@realtek.com>
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* Larry Finger <Larry.Finger@lwfinger.net>
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*
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******************************************************************************/
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#define _RTL871X_XMIT_C_
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#include "osdep_service.h"
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#include "drv_types.h"
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#include "wifi.h"
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#include "osdep_intf.h"
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#include "usb_ops.h"
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static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
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static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
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static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
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static void alloc_hwxmits(struct _adapter *padapter);
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static void free_hwxmits(struct _adapter *padapter);
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static void _init_txservq(struct tx_servq *ptxservq)
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{
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INIT_LIST_HEAD(&ptxservq->tx_pending);
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_init_queue(&ptxservq->sta_pending);
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ptxservq->qcnt = 0;
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}
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void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
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{
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memset((unsigned char *)psta_xmitpriv, 0,
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sizeof(struct sta_xmit_priv));
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spin_lock_init(&psta_xmitpriv->lock);
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_init_txservq(&psta_xmitpriv->be_q);
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_init_txservq(&psta_xmitpriv->bk_q);
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_init_txservq(&psta_xmitpriv->vi_q);
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_init_txservq(&psta_xmitpriv->vo_q);
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INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz);
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INIT_LIST_HEAD(&psta_xmitpriv->apsd);
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}
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int _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
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struct _adapter *padapter)
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{
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sint i;
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struct xmit_buf *pxmitbuf;
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struct xmit_frame *pxframe;
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memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
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spin_lock_init(&pxmitpriv->lock);
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/*
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*Please insert all the queue initialization using _init_queue below
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*/
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pxmitpriv->adapter = padapter;
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_init_queue(&pxmitpriv->be_pending);
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_init_queue(&pxmitpriv->bk_pending);
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_init_queue(&pxmitpriv->vi_pending);
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_init_queue(&pxmitpriv->vo_pending);
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_init_queue(&pxmitpriv->bm_pending);
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_init_queue(&pxmitpriv->legacy_dz_queue);
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_init_queue(&pxmitpriv->apsd_queue);
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_init_queue(&pxmitpriv->free_xmit_queue);
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/*
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* Please allocate memory with sz = (struct xmit_frame) * NR_XMITFRAME,
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* and initialize free_xmit_frame below.
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* Please also apply free_txobj to link_up all the xmit_frames...
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*/
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pxmitpriv->pallocated_frame_buf =
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kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4,
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GFP_ATOMIC);
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if (!pxmitpriv->pallocated_frame_buf) {
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pxmitpriv->pxmit_frame_buf = NULL;
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return -ENOMEM;
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}
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pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
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((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
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pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
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for (i = 0; i < NR_XMITFRAME; i++) {
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INIT_LIST_HEAD(&(pxframe->list));
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pxframe->padapter = padapter;
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pxframe->frame_tag = DATA_FRAMETAG;
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pxframe->pkt = NULL;
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pxframe->buf_addr = NULL;
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pxframe->pxmitbuf = NULL;
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list_add_tail(&(pxframe->list),
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&(pxmitpriv->free_xmit_queue.queue));
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pxframe++;
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}
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pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
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/*
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* init xmit hw_txqueue
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*/
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_r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
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_r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
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_r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
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_r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
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_r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
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pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
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pxmitpriv->txirp_cnt = 1;
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/*per AC pending irp*/
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pxmitpriv->beq_cnt = 0;
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pxmitpriv->bkq_cnt = 0;
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pxmitpriv->viq_cnt = 0;
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pxmitpriv->voq_cnt = 0;
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/*init xmit_buf*/
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_init_queue(&pxmitpriv->free_xmitbuf_queue);
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_init_queue(&pxmitpriv->pending_xmitbuf_queue);
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pxmitpriv->pallocated_xmitbuf =
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kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4, GFP_ATOMIC);
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if (!pxmitpriv->pallocated_xmitbuf) {
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kfree(pxmitpriv->pallocated_frame_buf);
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pxmitpriv->pallocated_frame_buf = NULL;
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return -ENOMEM;
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}
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pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
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((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
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pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
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for (i = 0; i < NR_XMITBUFF; i++) {
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INIT_LIST_HEAD(&pxmitbuf->list);
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pxmitbuf->pallocated_buf =
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kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ, GFP_ATOMIC);
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if (!pxmitbuf->pallocated_buf)
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return -ENOMEM;
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pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
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((addr_t) (pxmitbuf->pallocated_buf) &
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(XMITBUF_ALIGN_SZ - 1));
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if (r8712_xmit_resource_alloc(padapter, pxmitbuf))
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return -ENOMEM;
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list_add_tail(&pxmitbuf->list,
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&(pxmitpriv->free_xmitbuf_queue.queue));
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pxmitbuf++;
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}
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pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
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INIT_WORK(&padapter->wk_filter_rx_ff0, r8712_SetFilter);
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alloc_hwxmits(padapter);
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init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
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tasklet_setup(&pxmitpriv->xmit_tasklet, r8712_xmit_bh);
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return 0;
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}
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void _free_xmit_priv(struct xmit_priv *pxmitpriv)
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{
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int i;
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struct _adapter *padapter = pxmitpriv->adapter;
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struct xmit_frame *pxmitframe = (struct xmit_frame *)
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pxmitpriv->pxmit_frame_buf;
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struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
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if (!pxmitpriv->pxmit_frame_buf)
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return;
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for (i = 0; i < NR_XMITFRAME; i++) {
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r8712_xmit_complete(padapter, pxmitframe);
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pxmitframe++;
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}
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for (i = 0; i < NR_XMITBUFF; i++) {
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r8712_xmit_resource_free(padapter, pxmitbuf);
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kfree(pxmitbuf->pallocated_buf);
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pxmitbuf++;
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}
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kfree(pxmitpriv->pallocated_frame_buf);
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kfree(pxmitpriv->pallocated_xmitbuf);
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free_hwxmits(padapter);
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}
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int r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
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struct pkt_attrib *pattrib)
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{
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struct pkt_file pktfile;
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struct sta_info *psta = NULL;
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struct ethhdr etherhdr;
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struct tx_cmd txdesc;
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bool bmcast;
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struct sta_priv *pstapriv = &padapter->stapriv;
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struct security_priv *psecuritypriv = &padapter->securitypriv;
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struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
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struct qos_priv *pqospriv = &pmlmepriv->qospriv;
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_r8712_open_pktfile(pkt, &pktfile);
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_r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
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pattrib->ether_type = ntohs(etherhdr.h_proto);
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/*
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* If driver xmit ARP packet, driver can set ps mode to initial
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* setting. It stands for getting DHCP or fix IP.
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*/
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if (pattrib->ether_type == 0x0806) {
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if (padapter->pwrctrlpriv.pwr_mode !=
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padapter->registrypriv.power_mgnt) {
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del_timer_sync(&pmlmepriv->dhcp_timer);
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r8712_set_ps_mode(padapter,
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padapter->registrypriv.power_mgnt,
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padapter->registrypriv.smart_ps);
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}
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}
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memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
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memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
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pattrib->pctrl = 0;
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if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
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check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
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memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
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memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
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} else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
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memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
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memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
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} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
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memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
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memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
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} else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
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/*firstly, filter packet not belongs to mp*/
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if (pattrib->ether_type != 0x8712)
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return -EINVAL;
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/* for mp storing the txcmd per packet,
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* according to the info of txcmd to update pattrib
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*/
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/*get MP_TXDESC_SIZE bytes txcmd per packet*/
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_r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
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memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
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memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
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pattrib->pctrl = 1;
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}
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/* r8712_xmitframe_coalesce() overwrite this!*/
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pattrib->pktlen = pktfile.pkt_len;
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if (pattrib->ether_type == ETH_P_IP) {
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/* The following is for DHCP and ARP packet, we use cck1M to
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* tx these packets and let LPS awake some time
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* to prevent DHCP protocol fail
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*/
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u8 tmp[24];
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_r8712_pktfile_read(&pktfile, &tmp[0], 24);
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pattrib->dhcp_pkt = 0;
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if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
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if (pattrib->ether_type == ETH_P_IP) {/* IP header*/
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if (((tmp[21] == 68) && (tmp[23] == 67)) ||
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((tmp[21] == 67) && (tmp[23] == 68))) {
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/* 68 : UDP BOOTP client
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* 67 : UDP BOOTP server
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* Use low rate to send DHCP packet.
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*/
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pattrib->dhcp_pkt = 1;
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}
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}
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}
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}
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bmcast = is_multicast_ether_addr(pattrib->ra);
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/* get sta_info*/
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if (bmcast) {
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psta = r8712_get_bcmc_stainfo(padapter);
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pattrib->mac_id = 4;
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} else {
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if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
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psta = r8712_get_stainfo(pstapriv,
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get_bssid(pmlmepriv));
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pattrib->mac_id = 5;
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} else {
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psta = r8712_get_stainfo(pstapriv, pattrib->ra);
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if (!psta) /* drop the pkt */
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return -ENOMEM;
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if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
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pattrib->mac_id = 5;
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else
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pattrib->mac_id = psta->mac_id;
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}
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}
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if (psta) {
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pattrib->psta = psta;
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} else {
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/* if we cannot get psta => drrp the pkt */
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return -ENOMEM;
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}
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pattrib->ack_policy = 0;
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/* get ether_hdr_len */
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pattrib->pkt_hdrlen = ETH_HLEN;
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if (pqospriv->qos_option) {
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r8712_set_qos(&pktfile, pattrib);
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} else {
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pattrib->hdrlen = WLAN_HDR_A3_LEN;
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pattrib->subtype = WIFI_DATA_TYPE;
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pattrib->priority = 0;
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}
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if (psta->ieee8021x_blocked) {
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pattrib->encrypt = 0;
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if ((pattrib->ether_type != 0x888e) &&
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!check_fwstate(pmlmepriv, WIFI_MP_STATE))
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return -EINVAL;
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} else {
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GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
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}
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switch (pattrib->encrypt) {
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case _WEP40_:
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case _WEP104_:
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pattrib->iv_len = 4;
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pattrib->icv_len = 4;
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break;
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case _TKIP_:
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pattrib->iv_len = 8;
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pattrib->icv_len = 4;
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if (padapter->securitypriv.busetkipkey == _FAIL)
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return -EINVAL;
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break;
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case _AES_:
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pattrib->iv_len = 8;
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pattrib->icv_len = 8;
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break;
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default:
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pattrib->iv_len = 0;
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pattrib->icv_len = 0;
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break;
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}
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if (pattrib->encrypt &&
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(padapter->securitypriv.sw_encrypt ||
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!psecuritypriv->hw_decrypted))
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pattrib->bswenc = true;
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else
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pattrib->bswenc = false;
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/* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
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* some settings above.
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*/
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if (check_fwstate(pmlmepriv, WIFI_MP_STATE))
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pattrib->priority =
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(le32_to_cpu(txdesc.txdw1) >> QSEL_SHT) & 0x1f;
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return 0;
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}
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static int xmitframe_addmic(struct _adapter *padapter,
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struct xmit_frame *pxmitframe)
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{
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u32 curfragnum, length;
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u8 *pframe, *payload, mic[8];
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struct mic_data micdata;
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struct sta_info *stainfo;
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struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
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struct pkt_attrib *pattrib = &pxmitframe->attrib;
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struct security_priv *psecpriv = &padapter->securitypriv;
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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u8 priority[4] = {};
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bool bmcst = is_multicast_ether_addr(pattrib->ra);
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if (pattrib->psta)
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stainfo = pattrib->psta;
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else
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stainfo = r8712_get_stainfo(&padapter->stapriv,
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&pattrib->ra[0]);
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if (pattrib->encrypt == _TKIP_) {
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/*encode mic code*/
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if (stainfo) {
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u8 null_key[16] = {};
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pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
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if (bmcst) {
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if (!memcmp(psecpriv->XGrptxmickey
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[psecpriv->XGrpKeyid].skey,
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null_key, 16))
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return -ENOMEM;
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/*start to calculate the mic code*/
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r8712_secmicsetkey(&micdata,
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psecpriv->XGrptxmickey
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[psecpriv->XGrpKeyid].skey);
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} else {
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if (!memcmp(&stainfo->tkiptxmickey.skey[0],
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null_key, 16))
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return -ENOMEM;
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/* start to calculate the mic code */
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r8712_secmicsetkey(&micdata,
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&stainfo->tkiptxmickey.skey[0]);
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}
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if (pframe[1] & 1) { /* ToDS==1 */
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r8712_secmicappend(&micdata,
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&pframe[16], 6); /*DA*/
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if (pframe[1] & 2) /* From Ds==1 */
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r8712_secmicappend(&micdata,
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&pframe[24], 6);
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else
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r8712_secmicappend(&micdata,
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&pframe[10], 6);
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} else { /* ToDS==0 */
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r8712_secmicappend(&micdata,
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&pframe[4], 6); /* DA */
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if (pframe[1] & 2) /* From Ds==1 */
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r8712_secmicappend(&micdata,
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&pframe[16], 6);
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else
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r8712_secmicappend(&micdata,
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&pframe[10], 6);
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}
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if (pqospriv->qos_option == 1)
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priority[0] = (u8)pxmitframe->attrib.priority;
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r8712_secmicappend(&micdata, &priority[0], 4);
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payload = pframe;
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for (curfragnum = 0; curfragnum < pattrib->nr_frags;
|
curfragnum++) {
|
payload = (u8 *)RND4((addr_t)(payload));
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payload += pattrib->hdrlen + pattrib->iv_len;
|
if ((curfragnum + 1) == pattrib->nr_frags) {
|
length = pattrib->last_txcmdsz -
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pattrib->hdrlen -
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pattrib->iv_len -
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((psecpriv->sw_encrypt)
|
? pattrib->icv_len : 0);
|
r8712_secmicappend(&micdata, payload,
|
length);
|
payload = payload + length;
|
} else {
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length = pxmitpriv->frag_len -
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pattrib->hdrlen - pattrib->iv_len -
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((psecpriv->sw_encrypt) ?
|
pattrib->icv_len : 0);
|
r8712_secmicappend(&micdata, payload,
|
length);
|
payload = payload + length +
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pattrib->icv_len;
|
}
|
}
|
r8712_secgetmic(&micdata, &(mic[0]));
|
/* add mic code and add the mic code length in
|
* last_txcmdsz
|
*/
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memcpy(payload, &(mic[0]), 8);
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pattrib->last_txcmdsz += 8;
|
payload = payload - pattrib->last_txcmdsz + 8;
|
}
|
}
|
return 0;
|
}
|
|
static sint xmitframe_swencrypt(struct _adapter *padapter,
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struct xmit_frame *pxmitframe)
|
{
|
struct pkt_attrib *pattrib = &pxmitframe->attrib;
|
|
if (pattrib->bswenc) {
|
switch (pattrib->encrypt) {
|
case _WEP40_:
|
case _WEP104_:
|
r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
|
break;
|
case _TKIP_:
|
r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
|
break;
|
case _AES_:
|
r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
|
break;
|
default:
|
break;
|
}
|
}
|
return _SUCCESS;
|
}
|
|
static int make_wlanhdr(struct _adapter *padapter, u8 *hdr,
|
struct pkt_attrib *pattrib)
|
{
|
u16 *qc;
|
|
struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
|
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
|
struct qos_priv *pqospriv = &pmlmepriv->qospriv;
|
__le16 *fctrl = &pwlanhdr->frame_control;
|
u8 *bssid;
|
|
memset(hdr, 0, WLANHDR_OFFSET);
|
SetFrameSubType(fctrl, pattrib->subtype);
|
if (!(pattrib->subtype & WIFI_DATA_TYPE))
|
return 0;
|
|
bssid = get_bssid(pmlmepriv);
|
|
if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
|
/* to_ds = 1, fr_ds = 0; */
|
SetToDs(fctrl);
|
ether_addr_copy(pwlanhdr->addr1, bssid);
|
ether_addr_copy(pwlanhdr->addr2, pattrib->src);
|
ether_addr_copy(pwlanhdr->addr3, pattrib->dst);
|
} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
|
/* to_ds = 0, fr_ds = 1; */
|
SetFrDs(fctrl);
|
ether_addr_copy(pwlanhdr->addr1, pattrib->dst);
|
ether_addr_copy(pwlanhdr->addr2, bssid);
|
ether_addr_copy(pwlanhdr->addr3, pattrib->src);
|
} else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
|
check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
|
ether_addr_copy(pwlanhdr->addr1, pattrib->dst);
|
ether_addr_copy(pwlanhdr->addr2, pattrib->src);
|
ether_addr_copy(pwlanhdr->addr3, bssid);
|
} else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
|
ether_addr_copy(pwlanhdr->addr1, pattrib->dst);
|
ether_addr_copy(pwlanhdr->addr2, pattrib->src);
|
ether_addr_copy(pwlanhdr->addr3, bssid);
|
} else {
|
return -EINVAL;
|
}
|
|
if (pattrib->encrypt)
|
SetPrivacy(fctrl);
|
if (pqospriv->qos_option) {
|
qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
|
if (pattrib->priority)
|
SetPriority(qc, pattrib->priority);
|
SetAckpolicy(qc, pattrib->ack_policy);
|
}
|
/* TODO: fill HT Control Field */
|
/* Update Seq Num will be handled by f/w */
|
{
|
struct sta_info *psta;
|
bool bmcst = is_multicast_ether_addr(pattrib->ra);
|
|
if (pattrib->psta)
|
psta = pattrib->psta;
|
else if (bmcst)
|
psta = r8712_get_bcmc_stainfo(padapter);
|
else
|
psta = r8712_get_stainfo(&padapter->stapriv,
|
pattrib->ra);
|
|
if (psta) {
|
u16 *txtid = psta->sta_xmitpriv.txseq_tid;
|
|
txtid[pattrib->priority]++;
|
txtid[pattrib->priority] &= 0xFFF;
|
pattrib->seqnum = txtid[pattrib->priority];
|
SetSeqNum(hdr, pattrib->seqnum);
|
}
|
}
|
|
return 0;
|
}
|
|
static sint r8712_put_snap(u8 *data, u16 h_proto)
|
{
|
struct ieee80211_snap_hdr *snap;
|
const u8 *oui;
|
|
snap = (struct ieee80211_snap_hdr *)data;
|
snap->dsap = 0xaa;
|
snap->ssap = 0xaa;
|
snap->ctrl = 0x03;
|
if (h_proto == 0x8137 || h_proto == 0x80f3)
|
oui = P802_1H_OUI;
|
else
|
oui = RFC1042_OUI;
|
snap->oui[0] = oui[0];
|
snap->oui[1] = oui[1];
|
snap->oui[2] = oui[2];
|
*(__be16 *)(data + SNAP_SIZE) = htons(h_proto);
|
return SNAP_SIZE + sizeof(u16);
|
}
|
|
/*
|
* This sub-routine will perform all the following:
|
* 1. remove 802.3 header.
|
* 2. create wlan_header, based on the info in pxmitframe
|
* 3. append sta's iv/ext-iv
|
* 4. append LLC
|
* 5. move frag chunk from pframe to pxmitframe->mem
|
* 6. apply sw-encrypt, if necessary.
|
*/
|
sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
|
struct xmit_frame *pxmitframe)
|
{
|
struct pkt_file pktfile;
|
|
sint frg_len, mpdu_len, llc_sz;
|
u32 mem_sz;
|
u8 frg_inx;
|
addr_t addr;
|
u8 *pframe, *mem_start, *ptxdesc;
|
struct sta_info *psta;
|
struct security_priv *psecpriv = &padapter->securitypriv;
|
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
|
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
|
struct pkt_attrib *pattrib = &pxmitframe->attrib;
|
u8 *pbuf_start;
|
bool bmcst = is_multicast_ether_addr(pattrib->ra);
|
|
if (!pattrib->psta)
|
return _FAIL;
|
psta = pattrib->psta;
|
if (!pxmitframe->buf_addr)
|
return _FAIL;
|
pbuf_start = pxmitframe->buf_addr;
|
ptxdesc = pbuf_start;
|
mem_start = pbuf_start + TXDESC_OFFSET;
|
if (make_wlanhdr(padapter, mem_start, pattrib))
|
return _FAIL;
|
_r8712_open_pktfile(pkt, &pktfile);
|
_r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
|
if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
|
/* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
|
if (pattrib->ether_type == 0x8712) {
|
/* take care - update_txdesc overwrite this */
|
_r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
|
}
|
}
|
pattrib->pktlen = pktfile.pkt_len;
|
frg_inx = 0;
|
frg_len = pxmitpriv->frag_len - 4;
|
while (1) {
|
llc_sz = 0;
|
mpdu_len = frg_len;
|
pframe = mem_start;
|
SetMFrag(mem_start);
|
pframe += pattrib->hdrlen;
|
mpdu_len -= pattrib->hdrlen;
|
/* adding icv, if necessary...*/
|
if (pattrib->iv_len) {
|
if (psta) {
|
switch (pattrib->encrypt) {
|
case _WEP40_:
|
case _WEP104_:
|
WEP_IV(pattrib->iv, psta->txpn,
|
(u8)psecpriv->PrivacyKeyIndex);
|
break;
|
case _TKIP_:
|
if (bmcst)
|
TKIP_IV(pattrib->iv,
|
psta->txpn,
|
(u8)psecpriv->XGrpKeyid);
|
else
|
TKIP_IV(pattrib->iv, psta->txpn,
|
0);
|
break;
|
case _AES_:
|
if (bmcst)
|
AES_IV(pattrib->iv, psta->txpn,
|
(u8)psecpriv->XGrpKeyid);
|
else
|
AES_IV(pattrib->iv, psta->txpn,
|
0);
|
break;
|
}
|
}
|
memcpy(pframe, pattrib->iv, pattrib->iv_len);
|
pframe += pattrib->iv_len;
|
mpdu_len -= pattrib->iv_len;
|
}
|
if (frg_inx == 0) {
|
llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
|
pframe += llc_sz;
|
mpdu_len -= llc_sz;
|
}
|
if ((pattrib->icv_len > 0) && (pattrib->bswenc))
|
mpdu_len -= pattrib->icv_len;
|
if (bmcst)
|
mem_sz = _r8712_pktfile_read(&pktfile, pframe,
|
pattrib->pktlen);
|
else
|
mem_sz = _r8712_pktfile_read(&pktfile, pframe,
|
mpdu_len);
|
pframe += mem_sz;
|
if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
|
memcpy(pframe, pattrib->icv, pattrib->icv_len);
|
pframe += pattrib->icv_len;
|
}
|
frg_inx++;
|
if (bmcst || r8712_endofpktfile(&pktfile)) {
|
pattrib->nr_frags = frg_inx;
|
pattrib->last_txcmdsz = pattrib->hdrlen +
|
pattrib->iv_len +
|
((pattrib->nr_frags == 1) ?
|
llc_sz : 0) +
|
((pattrib->bswenc) ?
|
pattrib->icv_len : 0) + mem_sz;
|
ClearMFrag(mem_start);
|
break;
|
}
|
addr = (addr_t)(pframe);
|
mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
|
memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
|
}
|
|
if (xmitframe_addmic(padapter, pxmitframe))
|
return _FAIL;
|
xmitframe_swencrypt(padapter, pxmitframe);
|
return _SUCCESS;
|
}
|
|
void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
|
{
|
uint protection;
|
u8 *perp;
|
uint erp_len;
|
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
|
struct registry_priv *pregistrypriv = &padapter->registrypriv;
|
|
switch (pxmitpriv->vcs_setting) {
|
case DISABLE_VCS:
|
pxmitpriv->vcs = NONE_VCS;
|
break;
|
case ENABLE_VCS:
|
break;
|
case AUTO_VCS:
|
default:
|
perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
|
if (!perp) {
|
pxmitpriv->vcs = NONE_VCS;
|
} else {
|
protection = (*(perp + 2)) & BIT(1);
|
if (protection) {
|
if (pregistrypriv->vcs_type == RTS_CTS)
|
pxmitpriv->vcs = RTS_CTS;
|
else
|
pxmitpriv->vcs = CTS_TO_SELF;
|
} else {
|
pxmitpriv->vcs = NONE_VCS;
|
}
|
}
|
break;
|
}
|
}
|
|
struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
|
{
|
unsigned long irqL;
|
struct xmit_buf *pxmitbuf;
|
struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
|
|
spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
|
pxmitbuf = list_first_entry_or_null(&pfree_xmitbuf_queue->queue,
|
struct xmit_buf, list);
|
if (pxmitbuf) {
|
list_del_init(&pxmitbuf->list);
|
pxmitpriv->free_xmitbuf_cnt--;
|
}
|
spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
|
return pxmitbuf;
|
}
|
|
void r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
|
{
|
unsigned long irqL;
|
struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
|
|
if (!pxmitbuf)
|
return;
|
spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
|
list_del_init(&pxmitbuf->list);
|
list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue);
|
pxmitpriv->free_xmitbuf_cnt++;
|
spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
|
}
|
|
/*
|
* Calling context:
|
* 1. OS_TXENTRY
|
* 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
|
*
|
* If we turn on USE_RXTHREAD, then, no need for critical section.
|
* Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
|
*
|
* Must be very very cautious...
|
*
|
*/
|
struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
|
{
|
/*
|
* Please remember to use all the osdep_service api,
|
* and lock/unlock or _enter/_exit critical to protect
|
* pfree_xmit_queue
|
*/
|
unsigned long irqL;
|
struct xmit_frame *pxframe;
|
struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
|
|
spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
|
pxframe = list_first_entry_or_null(&pfree_xmit_queue->queue,
|
struct xmit_frame, list);
|
if (pxframe) {
|
list_del_init(&pxframe->list);
|
pxmitpriv->free_xmitframe_cnt--;
|
pxframe->buf_addr = NULL;
|
pxframe->pxmitbuf = NULL;
|
pxframe->attrib.psta = NULL;
|
pxframe->pkt = NULL;
|
}
|
spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
|
return pxframe;
|
}
|
|
void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
|
struct xmit_frame *pxmitframe)
|
{
|
unsigned long irqL;
|
struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
|
struct _adapter *padapter = pxmitpriv->adapter;
|
|
if (!pxmitframe)
|
return;
|
spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
|
list_del_init(&pxmitframe->list);
|
if (pxmitframe->pkt)
|
pxmitframe->pkt = NULL;
|
list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
|
pxmitpriv->free_xmitframe_cnt++;
|
spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
|
if (netif_queue_stopped(padapter->pnetdev))
|
netif_wake_queue(padapter->pnetdev);
|
}
|
|
void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
|
struct xmit_frame *pxmitframe)
|
{
|
if (!pxmitframe)
|
return;
|
if (pxmitframe->frame_tag == DATA_FRAMETAG)
|
r8712_free_xmitframe(pxmitpriv, pxmitframe);
|
}
|
|
void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
|
struct __queue *pframequeue)
|
{
|
unsigned long irqL;
|
struct list_head *plist, *phead;
|
struct xmit_frame *pxmitframe;
|
|
spin_lock_irqsave(&(pframequeue->lock), irqL);
|
phead = &pframequeue->queue;
|
plist = phead->next;
|
while (!end_of_queue_search(phead, plist)) {
|
pxmitframe = container_of(plist, struct xmit_frame, list);
|
plist = plist->next;
|
r8712_free_xmitframe(pxmitpriv, pxmitframe);
|
}
|
spin_unlock_irqrestore(&(pframequeue->lock), irqL);
|
}
|
|
static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
|
struct __queue **ppstapending,
|
struct sta_info *psta, sint up)
|
{
|
|
struct tx_servq *ptxservq;
|
struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
|
|
switch (up) {
|
case 1:
|
case 2:
|
ptxservq = &(psta->sta_xmitpriv.bk_q);
|
*ppstapending = &padapter->xmitpriv.bk_pending;
|
(phwxmits + 3)->accnt++;
|
break;
|
case 4:
|
case 5:
|
ptxservq = &(psta->sta_xmitpriv.vi_q);
|
*ppstapending = &padapter->xmitpriv.vi_pending;
|
(phwxmits + 1)->accnt++;
|
break;
|
case 6:
|
case 7:
|
ptxservq = &(psta->sta_xmitpriv.vo_q);
|
*ppstapending = &padapter->xmitpriv.vo_pending;
|
(phwxmits + 0)->accnt++;
|
break;
|
case 0:
|
case 3:
|
default:
|
ptxservq = &(psta->sta_xmitpriv.be_q);
|
*ppstapending = &padapter->xmitpriv.be_pending;
|
(phwxmits + 2)->accnt++;
|
break;
|
}
|
return ptxservq;
|
}
|
|
/*
|
* Will enqueue pxmitframe to the proper queue, and indicate it
|
* to xx_pending list.....
|
*/
|
int r8712_xmit_classifier(struct _adapter *padapter,
|
struct xmit_frame *pxmitframe)
|
{
|
unsigned long irqL0;
|
struct __queue *pstapending;
|
struct sta_info *psta;
|
struct tx_servq *ptxservq;
|
struct pkt_attrib *pattrib = &pxmitframe->attrib;
|
struct sta_priv *pstapriv = &padapter->stapriv;
|
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
|
bool bmcst = is_multicast_ether_addr(pattrib->ra);
|
|
if (pattrib->psta) {
|
psta = pattrib->psta;
|
} else {
|
if (bmcst) {
|
psta = r8712_get_bcmc_stainfo(padapter);
|
} else {
|
if (check_fwstate(pmlmepriv, WIFI_MP_STATE))
|
psta = r8712_get_stainfo(pstapriv,
|
get_bssid(pmlmepriv));
|
else
|
psta = r8712_get_stainfo(pstapriv, pattrib->ra);
|
}
|
}
|
if (!psta)
|
return -EINVAL;
|
ptxservq = get_sta_pending(padapter, &pstapending,
|
psta, pattrib->priority);
|
spin_lock_irqsave(&pstapending->lock, irqL0);
|
if (list_empty(&ptxservq->tx_pending))
|
list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
|
list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
|
ptxservq->qcnt++;
|
spin_unlock_irqrestore(&pstapending->lock, irqL0);
|
return 0;
|
}
|
|
static void alloc_hwxmits(struct _adapter *padapter)
|
{
|
struct hw_xmit *hwxmits;
|
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
|
|
pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
|
pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry,
|
sizeof(struct hw_xmit), GFP_ATOMIC);
|
if (!pxmitpriv->hwxmits)
|
return;
|
hwxmits = pxmitpriv->hwxmits;
|
if (pxmitpriv->hwxmit_entry == 5) {
|
pxmitpriv->bmc_txqueue.head = 0;
|
hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
|
hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
|
pxmitpriv->vo_txqueue.head = 0;
|
hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
|
hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
|
pxmitpriv->vi_txqueue.head = 0;
|
hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
|
hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
|
pxmitpriv->bk_txqueue.head = 0;
|
hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
|
hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
|
pxmitpriv->be_txqueue.head = 0;
|
hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
|
hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
|
} else if (pxmitpriv->hwxmit_entry == 4) {
|
pxmitpriv->vo_txqueue.head = 0;
|
hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
|
hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
|
pxmitpriv->vi_txqueue.head = 0;
|
hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
|
hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
|
pxmitpriv->be_txqueue.head = 0;
|
hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
|
hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
|
pxmitpriv->bk_txqueue.head = 0;
|
hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
|
hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
|
}
|
}
|
|
static void free_hwxmits(struct _adapter *padapter)
|
{
|
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
|
|
kfree(pxmitpriv->hwxmits);
|
}
|
|
static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
|
{
|
sint i;
|
|
for (i = 0; i < entry; i++, phwxmit++) {
|
spin_lock_init(&phwxmit->xmit_lock);
|
INIT_LIST_HEAD(&phwxmit->pending);
|
phwxmit->txcmdcnt = 0;
|
phwxmit->accnt = 0;
|
}
|
}
|
|
void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
|
struct xmit_buf *pxmitbuf)
|
{
|
/* pxmitbuf attach to pxmitframe */
|
pxmitframe->pxmitbuf = pxmitbuf;
|
/* urb and irp connection */
|
pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
|
/* buffer addr assoc */
|
pxmitframe->buf_addr = pxmitbuf->pbuf;
|
/* pxmitframe attach to pxmitbuf */
|
pxmitbuf->priv_data = pxmitframe;
|
}
|
|
/*
|
* tx_action == 0 == no frames to transmit
|
* tx_action > 0 ==> we have frames to transmit
|
* tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
|
* to transmit 1 frame.
|
*/
|
|
int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
|
{
|
unsigned long irqL;
|
int ret;
|
struct xmit_buf *pxmitbuf = NULL;
|
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
|
struct pkt_attrib *pattrib = &pxmitframe->attrib;
|
|
r8712_do_queue_select(padapter, pattrib);
|
spin_lock_irqsave(&pxmitpriv->lock, irqL);
|
if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
|
ret = false;
|
r8712_xmit_enqueue(padapter, pxmitframe);
|
spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
|
return ret;
|
}
|
pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
|
if (!pxmitbuf) { /*enqueue packet*/
|
ret = false;
|
r8712_xmit_enqueue(padapter, pxmitframe);
|
spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
|
} else { /*dump packet directly*/
|
spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
|
ret = true;
|
xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
|
r8712_xmit_direct(padapter, pxmitframe);
|
}
|
return ret;
|
}
|
