// SPDX-License-Identifier: GPL-2.0
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/******************************************************************************
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* xmit_linux.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 _XMIT_OSDEP_C_
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#include <linux/usb.h>
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#include <linux/ip.h>
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#include <linux/if_ether.h>
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#include <linux/kmemleak.h>
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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 "mlme_osdep.h"
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#include "xmit_osdep.h"
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#include "osdep_intf.h"
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static uint remainder_len(struct pkt_file *pfile)
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{
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return (uint)(pfile->buf_len - ((addr_t)(pfile->cur_addr) -
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(addr_t)(pfile->buf_start)));
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}
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void _r8712_open_pktfile(_pkt *pktptr, struct pkt_file *pfile)
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{
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pfile->pkt = pktptr;
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pfile->cur_addr = pfile->buf_start = pktptr->data;
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pfile->pkt_len = pfile->buf_len = pktptr->len;
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pfile->cur_buffer = pfile->buf_start;
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}
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uint _r8712_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen)
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{
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uint len;
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len = remainder_len(pfile);
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len = (rlen > len) ? len : rlen;
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if (rmem)
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skb_copy_bits(pfile->pkt, pfile->buf_len - pfile->pkt_len,
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rmem, len);
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pfile->cur_addr += len;
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pfile->pkt_len -= len;
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return len;
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}
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sint r8712_endofpktfile(struct pkt_file *pfile)
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{
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return (pfile->pkt_len == 0);
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}
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void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib)
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{
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struct ethhdr etherhdr;
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struct iphdr ip_hdr;
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u16 UserPriority = 0;
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_r8712_open_pktfile(ppktfile->pkt, ppktfile);
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_r8712_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN);
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/* get UserPriority from IP hdr*/
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if (pattrib->ether_type == 0x0800) {
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_r8712_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr));
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/*UserPriority = (ntohs(ip_hdr.tos) >> 5) & 0x3 ;*/
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UserPriority = ip_hdr.tos >> 5;
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} else {
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/* "When priority processing of data frames is supported,
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* a STA's SME should send EAPOL-Key frames at the highest
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* priority."
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*/
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if (pattrib->ether_type == 0x888e)
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UserPriority = 7;
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}
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pattrib->priority = UserPriority;
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pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN;
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pattrib->subtype = WIFI_QOS_DATA_TYPE;
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}
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void r8712_SetFilter(struct work_struct *work)
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{
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struct _adapter *adapter = container_of(work, struct _adapter,
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wk_filter_rx_ff0);
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u8 oldvalue = 0x00, newvalue = 0x00;
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unsigned long irqL;
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oldvalue = r8712_read8(adapter, 0x117);
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newvalue = oldvalue & 0xfe;
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r8712_write8(adapter, 0x117, newvalue);
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spin_lock_irqsave(&adapter->lock_rx_ff0_filter, irqL);
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adapter->blnEnableRxFF0Filter = 1;
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spin_unlock_irqrestore(&adapter->lock_rx_ff0_filter, irqL);
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do {
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msleep(100);
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} while (adapter->blnEnableRxFF0Filter == 1);
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r8712_write8(adapter, 0x117, oldvalue);
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}
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int r8712_xmit_resource_alloc(struct _adapter *padapter,
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struct xmit_buf *pxmitbuf)
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{
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int i;
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for (i = 0; i < 8; i++) {
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pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
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if (!pxmitbuf->pxmit_urb[i]) {
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int k;
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for (k = i - 1; k >= 0; k--) {
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/* handle allocation errors part way through loop */
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usb_free_urb(pxmitbuf->pxmit_urb[k]);
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}
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netdev_err(padapter->pnetdev, "pxmitbuf->pxmit_urb[i] == NULL\n");
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return -ENOMEM;
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}
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kmemleak_not_leak(pxmitbuf->pxmit_urb[i]);
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}
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return 0;
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}
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void r8712_xmit_resource_free(struct _adapter *padapter,
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struct xmit_buf *pxmitbuf)
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{
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int i;
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for (i = 0; i < 8; i++) {
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if (pxmitbuf->pxmit_urb[i]) {
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usb_kill_urb(pxmitbuf->pxmit_urb[i]);
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usb_free_urb(pxmitbuf->pxmit_urb[i]);
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}
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}
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}
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void r8712_xmit_complete(struct _adapter *padapter, struct xmit_frame *pxframe)
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{
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if (pxframe->pkt)
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dev_kfree_skb_any(pxframe->pkt);
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pxframe->pkt = NULL;
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}
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int r8712_xmit_entry(_pkt *pkt, struct net_device *netdev)
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{
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struct xmit_frame *xmitframe = NULL;
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struct _adapter *adapter = netdev_priv(netdev);
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struct xmit_priv *xmitpriv = &(adapter->xmitpriv);
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if (!r8712_if_up(adapter))
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goto _xmit_entry_drop;
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xmitframe = r8712_alloc_xmitframe(xmitpriv);
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if (!xmitframe)
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goto _xmit_entry_drop;
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if (r8712_update_attrib(adapter, pkt, &xmitframe->attrib))
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goto _xmit_entry_drop;
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adapter->ledpriv.LedControlHandler(adapter, LED_CTL_TX);
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xmitframe->pkt = pkt;
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if (r8712_pre_xmit(adapter, xmitframe)) {
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/*dump xmitframe directly or drop xframe*/
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dev_kfree_skb_any(pkt);
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xmitframe->pkt = NULL;
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}
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xmitpriv->tx_pkts++;
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xmitpriv->tx_bytes += xmitframe->attrib.last_txcmdsz;
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return 0;
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_xmit_entry_drop:
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if (xmitframe)
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r8712_free_xmitframe(xmitpriv, xmitframe);
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xmitpriv->tx_drop++;
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dev_kfree_skb_any(pkt);
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return 0;
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}
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