/******************************************************************************
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*
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* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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*
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******************************************************************************/
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#define _XMIT_OSDEP_C_
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#include <drv_types.h>
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#define DBG_DUMP_OS_QUEUE_CTL 0
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uint rtw_remainder_len(struct pkt_file *pfile)
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{
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return pfile->buf_len - ((SIZE_PTR)(pfile->cur_addr) - (SIZE_PTR)(pfile->buf_start));
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}
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void _rtw_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 _rtw_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen)
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{
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uint len = 0;
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len = rtw_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, 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 rtw_endofpktfile(struct pkt_file *pfile)
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{
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if (pfile->pkt_len == 0) {
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return _TRUE;
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}
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return _FALSE;
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}
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void rtw_set_tx_chksum_offload(_pkt *pkt, struct pkt_attrib *pattrib)
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{
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#ifdef CONFIG_TCP_CSUM_OFFLOAD_TX
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struct sk_buff *skb = (struct sk_buff *)pkt;
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pattrib->hw_tcp_csum = 0;
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if (skb->ip_summed == CHECKSUM_PARTIAL) {
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if (skb_shinfo(skb)->nr_frags == 0) {
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const struct iphdr *ip = ip_hdr(skb);
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if (ip->protocol == IPPROTO_TCP) {
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/* TCP checksum offload by HW */
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RTW_INFO("CHECKSUM_PARTIAL TCP\n");
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pattrib->hw_tcp_csum = 1;
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/* skb_checksum_help(skb); */
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} else if (ip->protocol == IPPROTO_UDP) {
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/* RTW_INFO("CHECKSUM_PARTIAL UDP\n"); */
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#if 1
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skb_checksum_help(skb);
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#else
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/* Set UDP checksum = 0 to skip checksum check */
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struct udphdr *udp = skb_transport_header(skb);
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udp->check = 0;
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#endif
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} else {
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RTW_INFO("%s-%d TCP CSUM offload Error!!\n", __FUNCTION__, __LINE__);
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WARN_ON(1); /* we need a WARN() */
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}
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} else { /* IP fragmentation case */
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RTW_INFO("%s-%d nr_frags != 0, using skb_checksum_help(skb);!!\n", __FUNCTION__, __LINE__);
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skb_checksum_help(skb);
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}
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}
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#endif
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}
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int rtw_os_xmit_resource_alloc(_adapter *padapter, struct xmit_buf *pxmitbuf, u32 alloc_sz, u8 flag)
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{
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if (alloc_sz > 0) {
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#ifdef CONFIG_USE_USB_BUFFER_ALLOC_TX
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struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
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struct usb_device *pusbd = pdvobjpriv->pusbdev;
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pxmitbuf->pallocated_buf = rtw_usb_buffer_alloc(pusbd, (size_t)alloc_sz, &pxmitbuf->dma_transfer_addr);
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pxmitbuf->pbuf = pxmitbuf->pallocated_buf;
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if (pxmitbuf->pallocated_buf == NULL)
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return _FAIL;
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#else /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
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pxmitbuf->pallocated_buf = rtw_zmalloc(alloc_sz);
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if (pxmitbuf->pallocated_buf == NULL)
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return _FAIL;
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pxmitbuf->pbuf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(pxmitbuf->pallocated_buf), XMITBUF_ALIGN_SZ);
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#endif /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
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}
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if (flag) {
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#ifdef CONFIG_USB_HCI
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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] == NULL) {
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RTW_INFO("pxmitbuf->pxmit_urb[i]==NULL");
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return _FAIL;
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}
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}
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#endif
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}
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return _SUCCESS;
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}
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void rtw_os_xmit_resource_free(_adapter *padapter, struct xmit_buf *pxmitbuf, u32 free_sz, u8 flag)
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{
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if (flag) {
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#ifdef CONFIG_USB_HCI
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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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#endif
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}
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if (free_sz > 0) {
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#ifdef CONFIG_USE_USB_BUFFER_ALLOC_TX
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struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
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struct usb_device *pusbd = pdvobjpriv->pusbdev;
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rtw_usb_buffer_free(pusbd, (size_t)free_sz, pxmitbuf->pallocated_buf, pxmitbuf->dma_transfer_addr);
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pxmitbuf->pallocated_buf = NULL;
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pxmitbuf->dma_transfer_addr = 0;
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#else /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
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if (pxmitbuf->pallocated_buf)
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rtw_mfree(pxmitbuf->pallocated_buf, free_sz);
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#endif /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
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}
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}
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void dump_os_queue(void *sel, _adapter *padapter)
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{
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struct net_device *ndev = padapter->pnetdev;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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int i;
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for (i = 0; i < 4; i++) {
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RTW_PRINT_SEL(sel, "os_queue[%d]:%s\n"
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, i, __netif_subqueue_stopped(ndev, i) ? "stopped" : "waked");
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}
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#else
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RTW_PRINT_SEL(sel, "os_queue:%s\n"
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, netif_queue_stopped(ndev) ? "stopped" : "waked");
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#endif
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}
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#define WMM_XMIT_THRESHOLD (NR_XMITFRAME*2/5)
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static inline bool rtw_os_need_wake_queue(_adapter *padapter, u16 qidx)
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{
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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if (padapter->registrypriv.wifi_spec) {
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if (pxmitpriv->hwxmits[qidx].accnt < WMM_XMIT_THRESHOLD)
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return _TRUE;
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} else {
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#ifdef CONFIG_MCC_MODE
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if (MCC_EN(padapter)) {
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if (rtw_hal_check_mcc_status(padapter, MCC_STATUS_DOING_MCC)
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&& MCC_STOP(padapter))
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return _FALSE;
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}
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#endif /* CONFIG_MCC_MODE */
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return _TRUE;
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}
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return _FALSE;
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#else
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#ifdef CONFIG_MCC_MODE
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if (MCC_EN(padapter)) {
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if (rtw_hal_check_mcc_status(padapter, MCC_STATUS_DOING_MCC)
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&& MCC_STOP(padapter))
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return _FALSE;
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}
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#endif /* CONFIG_MCC_MODE */
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return _TRUE;
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#endif
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}
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static inline bool rtw_os_need_stop_queue(_adapter *padapter, u16 qidx)
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{
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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if (padapter->registrypriv.wifi_spec) {
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/* No free space for Tx, tx_worker is too slow */
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if (pxmitpriv->hwxmits[qidx].accnt > WMM_XMIT_THRESHOLD)
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return _TRUE;
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} else {
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if (pxmitpriv->free_xmitframe_cnt <= 4)
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return _TRUE;
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}
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#else
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if (pxmitpriv->free_xmitframe_cnt <= 4)
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return _TRUE;
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#endif
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return _FALSE;
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}
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void rtw_os_pkt_complete(_adapter *padapter, _pkt *pkt)
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{
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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u16 qidx;
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qidx = skb_get_queue_mapping(pkt);
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if (rtw_os_need_wake_queue(padapter, qidx)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_wake_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), qidx);
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netif_wake_subqueue(padapter->pnetdev, qidx);
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}
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#else
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if (rtw_os_need_wake_queue(padapter, 0)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_wake_queue\n", FUNC_ADPT_ARG(padapter));
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netif_wake_queue(padapter->pnetdev);
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}
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#endif
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rtw_skb_free(pkt);
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}
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void rtw_os_xmit_complete(_adapter *padapter, struct xmit_frame *pxframe)
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{
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if (pxframe->pkt)
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rtw_os_pkt_complete(padapter, pxframe->pkt);
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pxframe->pkt = NULL;
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}
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void rtw_os_xmit_schedule(_adapter *padapter)
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{
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#if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
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_adapter *pri_adapter = GET_PRIMARY_ADAPTER(padapter);
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if (!padapter)
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return;
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if (_rtw_queue_empty(&padapter->xmitpriv.pending_xmitbuf_queue) == _FALSE)
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_rtw_up_sema(&pri_adapter->xmitpriv.xmit_sema);
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#else
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_irqL irqL;
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struct xmit_priv *pxmitpriv;
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if (!padapter)
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return;
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pxmitpriv = &padapter->xmitpriv;
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_enter_critical_bh(&pxmitpriv->lock, &irqL);
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if (rtw_txframes_pending(padapter))
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tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
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_exit_critical_bh(&pxmitpriv->lock, &irqL);
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#if defined(CONFIG_PCI_HCI) && defined(CONFIG_XMIT_THREAD_MODE)
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if (_rtw_queue_empty(&padapter->xmitpriv.pending_xmitbuf_queue) == _FALSE)
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_rtw_up_sema(&padapter->xmitpriv.xmit_sema);
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#endif
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#endif
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}
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static bool rtw_check_xmit_resource(_adapter *padapter, _pkt *pkt)
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{
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bool busy = _FALSE;
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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u16 qidx;
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qidx = skb_get_queue_mapping(pkt);
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if (rtw_os_need_stop_queue(padapter, qidx)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_stop_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), qidx);
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netif_stop_subqueue(padapter->pnetdev, qidx);
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busy = _TRUE;
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}
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#else
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if (rtw_os_need_stop_queue(padapter, 0)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_stop_queue\n", FUNC_ADPT_ARG(padapter));
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rtw_netif_stop_queue(padapter->pnetdev);
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busy = _TRUE;
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}
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#endif
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return busy;
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}
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void rtw_os_wake_queue_at_free_stainfo(_adapter *padapter, int *qcnt_freed)
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{
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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int i;
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for (i = 0; i < 4; i++) {
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if (qcnt_freed[i] == 0)
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continue;
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if (rtw_os_need_wake_queue(padapter, i)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_wake_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), i);
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netif_wake_subqueue(padapter->pnetdev, i);
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}
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}
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#else
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if (qcnt_freed[0] || qcnt_freed[1] || qcnt_freed[2] || qcnt_freed[3]) {
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if (rtw_os_need_wake_queue(padapter, 0)) {
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if (DBG_DUMP_OS_QUEUE_CTL)
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RTW_INFO(FUNC_ADPT_FMT": netif_wake_queue\n", FUNC_ADPT_ARG(padapter));
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netif_wake_queue(padapter->pnetdev);
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}
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}
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#endif
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}
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#ifdef CONFIG_TX_MCAST2UNI
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int rtw_mlcst2unicst(_adapter *padapter, struct sk_buff *skb)
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{
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struct sta_priv *pstapriv = &padapter->stapriv;
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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_irqL irqL;
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_list *phead, *plist;
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struct sk_buff *newskb;
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struct sta_info *psta = NULL;
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u8 chk_alive_num = 0;
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char chk_alive_list[NUM_STA];
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u8 bc_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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u8 null_addr[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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int i;
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s32 res;
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u);
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_enter_critical_bh(&pstapriv->asoc_list_lock, &irqL);
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phead = &pstapriv->asoc_list;
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plist = get_next(phead);
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/* free sta asoc_queue */
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while ((rtw_end_of_queue_search(phead, plist)) == _FALSE) {
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int stainfo_offset;
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psta = LIST_CONTAINOR(plist, struct sta_info, asoc_list);
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plist = get_next(plist);
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stainfo_offset = rtw_stainfo_offset(pstapriv, psta);
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if (stainfo_offset_valid(stainfo_offset))
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chk_alive_list[chk_alive_num++] = stainfo_offset;
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}
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_exit_critical_bh(&pstapriv->asoc_list_lock, &irqL);
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for (i = 0; i < chk_alive_num; i++) {
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psta = rtw_get_stainfo_by_offset(pstapriv, chk_alive_list[i]);
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if (!(psta->state & _FW_LINKED)) {
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_ignore_fw_linked);
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continue;
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}
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/* avoid come from STA1 and send back STA1 */
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if (_rtw_memcmp(psta->hwaddr, &skb->data[6], 6) == _TRUE
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|| _rtw_memcmp(psta->hwaddr, null_addr, 6) == _TRUE
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|| _rtw_memcmp(psta->hwaddr, bc_addr, 6) == _TRUE
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) {
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_ignore_self);
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continue;
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}
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry);
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newskb = rtw_skb_copy(skb);
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if (newskb) {
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_rtw_memcpy(newskb->data, psta->hwaddr, 6);
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res = rtw_xmit(padapter, &newskb);
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if (res < 0) {
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry_err_xmit);
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RTW_INFO("%s()-%d: rtw_xmit() return error! res=%d\n", __FUNCTION__, __LINE__, res);
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pxmitpriv->tx_drop++;
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rtw_skb_free(newskb);
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}
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} else {
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry_err_skb);
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RTW_INFO("%s-%d: rtw_skb_copy() failed!\n", __FUNCTION__, __LINE__);
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pxmitpriv->tx_drop++;
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/* rtw_skb_free(skb); */
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return _FALSE; /* Caller shall tx this multicast frame via normal way. */
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}
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}
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rtw_skb_free(skb);
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return _TRUE;
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}
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#endif /* CONFIG_TX_MCAST2UNI */
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|
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int _rtw_xmit_entry(_pkt *pkt, _nic_hdl pnetdev)
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{
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_adapter *padapter = (_adapter *)rtw_netdev_priv(pnetdev);
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struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
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#ifdef CONFIG_TX_MCAST2UNI
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struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
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extern int rtw_mc2u_disable;
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#endif /* CONFIG_TX_MCAST2UNI */
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s32 res = 0;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
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u16 queue;
|
#endif
|
|
|
if (padapter->registrypriv.mp_mode) {
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RTW_INFO("MP_TX_DROP_OS_FRAME\n");
|
goto drop_packet;
|
}
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DBG_COUNTER(padapter->tx_logs.os_tx);
|
|
if (rtw_if_up(padapter) == _FALSE) {
|
DBG_COUNTER(padapter->tx_logs.os_tx_err_up);
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#ifdef DBG_TX_DROP_FRAME
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RTW_INFO("DBG_TX_DROP_FRAME %s if_up fail\n", __FUNCTION__);
|
#endif
|
goto drop_packet;
|
}
|
|
rtw_check_xmit_resource(padapter, pkt);
|
|
#ifdef CONFIG_TX_MCAST2UNI
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if (!rtw_mc2u_disable
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&& check_fwstate(pmlmepriv, WIFI_AP_STATE) == _TRUE
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&& (IP_MCAST_MAC(pkt->data)
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|| ICMPV6_MCAST_MAC(pkt->data)
|
#ifdef CONFIG_TX_BCAST2UNI
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|| is_broadcast_mac_addr(pkt->data)
|
#endif
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)
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&& (padapter->registrypriv.wifi_spec == 0)
|
) {
|
if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME / 4)) {
|
res = rtw_mlcst2unicst(padapter, pkt);
|
if (res == _TRUE)
|
goto exit;
|
} else {
|
/* RTW_INFO("Stop M2U(%d, %d)! ", pxmitpriv->free_xmitframe_cnt, pxmitpriv->free_xmitbuf_cnt); */
|
/* RTW_INFO("!m2u ); */
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DBG_COUNTER(padapter->tx_logs.os_tx_m2u_stop);
|
}
|
}
|
#endif /* CONFIG_TX_MCAST2UNI */
|
|
res = rtw_xmit(padapter, &pkt);
|
if (res < 0) {
|
#ifdef DBG_TX_DROP_FRAME
|
RTW_INFO("DBG_TX_DROP_FRAME %s rtw_xmit fail\n", __FUNCTION__);
|
#endif
|
goto drop_packet;
|
}
|
|
goto exit;
|
|
drop_packet:
|
pxmitpriv->tx_drop++;
|
rtw_os_pkt_complete(padapter, pkt);
|
|
exit:
|
|
|
return 0;
|
}
|
|
int rtw_xmit_entry(_pkt *pkt, _nic_hdl pnetdev)
|
{
|
_adapter *padapter = (_adapter *)rtw_netdev_priv(pnetdev);
|
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
|
int ret = 0;
|
|
if (pkt) {
|
if (check_fwstate(pmlmepriv, WIFI_MONITOR_STATE) == _TRUE) {
|
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24))
|
rtw_monitor_xmit_entry((struct sk_buff *)pkt, pnetdev);
|
#endif
|
}
|
else {
|
rtw_mstat_update(MSTAT_TYPE_SKB, MSTAT_ALLOC_SUCCESS, pkt->truesize);
|
ret = _rtw_xmit_entry(pkt, pnetdev);
|
}
|
|
}
|
|
return ret;
|
}
|
