--- /dev/null
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *
+ ******************************************************************************/
+#define _XMIT_OSDEP_C_
+
+#include <osdep_service.h>
+#include <drv_types.h>
+
+#include <wifi.h>
+#include <mlme_osdep.h>
+#include <xmit_osdep.h>
+#include <osdep_intf.h>
+
+uint rtw_remainder_len(struct pkt_file *pfile)
+{
+ return pfile->buf_len - ((size_t)(pfile->cur_addr) -
+ (size_t)(pfile->buf_start));
+}
+
+void _rtw_open_pktfile(struct sk_buff *pktptr, struct pkt_file *pfile)
+{
+
+ pfile->pkt = pktptr;
+ pfile->cur_addr = pktptr->data;
+ pfile->buf_start = pktptr->data;
+ pfile->pkt_len = pktptr->len;
+ pfile->buf_len = pktptr->len;
+
+ pfile->cur_buffer = pfile->buf_start;
+
+}
+
+uint _rtw_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen)
+{
+ uint len = 0;
+
+
+ len = rtw_remainder_len(pfile);
+ len = (rlen > len) ? len : rlen;
+
+ if (rmem)
+ skb_copy_bits(pfile->pkt, pfile->buf_len-pfile->pkt_len, rmem, len);
+
+ pfile->cur_addr += len;
+ pfile->pkt_len -= len;
+
+
+ return len;
+}
+
+int rtw_endofpktfile(struct pkt_file *pfile)
+{
+ return pfile->pkt_len == 0;
+}
+
+int rtw_os_xmit_resource_alloc(struct adapter *padapter, struct xmit_buf *pxmitbuf, u32 alloc_sz)
+{
+ int i;
+
+ pxmitbuf->pallocated_buf = kzalloc(alloc_sz, GFP_KERNEL);
+ if (pxmitbuf->pallocated_buf == NULL)
+ return _FAIL;
+
+ pxmitbuf->pbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitbuf->pallocated_buf), XMITBUF_ALIGN_SZ);
+ pxmitbuf->dma_transfer_addr = 0;
+
+ for (i = 0; i < 8; i++) {
+ pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (pxmitbuf->pxmit_urb[i] == NULL) {
+ DBG_88E("pxmitbuf->pxmit_urb[i]==NULL");
+ return _FAIL;
+ }
+ }
+ return _SUCCESS;
+}
+
+void rtw_os_xmit_resource_free(struct adapter *padapter,
+ struct xmit_buf *pxmitbuf, u32 free_sz)
+{
+ int i;
+
+ for (i = 0; i < 8; i++)
+ usb_free_urb(pxmitbuf->pxmit_urb[i]);
+
+ kfree(pxmitbuf->pallocated_buf);
+}
+
+#define WMM_XMIT_THRESHOLD (NR_XMITFRAME*2/5)
+
+void rtw_os_pkt_complete(struct adapter *padapter, struct sk_buff *pkt)
+{
+ u16 queue;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+ queue = skb_get_queue_mapping(pkt);
+ if (padapter->registrypriv.wifi_spec) {
+ if (__netif_subqueue_stopped(padapter->pnetdev, queue) &&
+ (pxmitpriv->hwxmits[queue].accnt < WMM_XMIT_THRESHOLD))
+ netif_wake_subqueue(padapter->pnetdev, queue);
+ } else {
+ if (__netif_subqueue_stopped(padapter->pnetdev, queue))
+ netif_wake_subqueue(padapter->pnetdev, queue);
+ }
+
+ dev_kfree_skb_any(pkt);
+}
+
+void rtw_os_xmit_complete(struct adapter *padapter, struct xmit_frame *pxframe)
+{
+ if (pxframe->pkt)
+ rtw_os_pkt_complete(padapter, pxframe->pkt);
+ pxframe->pkt = NULL;
+}
+
+void rtw_os_xmit_schedule(struct adapter *padapter)
+{
+ struct xmit_priv *pxmitpriv;
+
+ if (!padapter)
+ return;
+
+ pxmitpriv = &padapter->xmitpriv;
+
+ spin_lock_bh(&pxmitpriv->lock);
+
+ if (rtw_txframes_pending(padapter))
+ tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
+
+ spin_unlock_bh(&pxmitpriv->lock);
+}
+
+static void rtw_check_xmit_resource(struct adapter *padapter, struct sk_buff *pkt)
+{
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ u16 queue;
+
+ queue = skb_get_queue_mapping(pkt);
+ if (padapter->registrypriv.wifi_spec) {
+ /* No free space for Tx, tx_worker is too slow */
+ if (pxmitpriv->hwxmits[queue].accnt > WMM_XMIT_THRESHOLD)
+ netif_stop_subqueue(padapter->pnetdev, queue);
+ } else {
+ if (pxmitpriv->free_xmitframe_cnt <= 4) {
+ if (!netif_tx_queue_stopped(netdev_get_tx_queue(padapter->pnetdev, queue)))
+ netif_stop_subqueue(padapter->pnetdev, queue);
+ }
+ }
+}
+
+static int rtw_mlcst2unicst(struct adapter *padapter, struct sk_buff *skb)
+{
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ struct list_head *phead, *plist;
+ struct sk_buff *newskb;
+ struct sta_info *psta = NULL;
+ s32 res;
+
+ spin_lock_bh(&pstapriv->asoc_list_lock);
+ phead = &pstapriv->asoc_list;
+ plist = phead->next;
+
+ /* free sta asoc_queue */
+ while (phead != plist) {
+ psta = container_of(plist, struct sta_info, asoc_list);
+
+ plist = plist->next;
+
+ /* avoid come from STA1 and send back STA1 */
+ if (!memcmp(psta->hwaddr, &skb->data[6], 6))
+ continue;
+
+ newskb = skb_copy(skb, GFP_ATOMIC);
+
+ if (newskb) {
+ memcpy(newskb->data, psta->hwaddr, 6);
+ res = rtw_xmit(padapter, &newskb);
+ if (res < 0) {
+ DBG_88E("%s()-%d: rtw_xmit() return error!\n", __func__, __LINE__);
+ pxmitpriv->tx_drop++;
+ dev_kfree_skb_any(newskb);
+ } else {
+ pxmitpriv->tx_pkts++;
+ }
+ } else {
+ DBG_88E("%s-%d: skb_copy() failed!\n", __func__, __LINE__);
+ pxmitpriv->tx_drop++;
+
+ spin_unlock_bh(&pstapriv->asoc_list_lock);
+ return false; /* Caller shall tx this multicast frame via normal way. */
+ }
+ }
+
+ spin_unlock_bh(&pstapriv->asoc_list_lock);
+ dev_kfree_skb_any(skb);
+ return true;
+}
+
+
+int rtw_xmit_entry(struct sk_buff *pkt, struct net_device *pnetdev)
+{
+ struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ s32 res = 0;
+
+
+ RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("+xmit_enry\n"));
+
+ if (rtw_if_up(padapter) == false) {
+ RT_TRACE(_module_xmit_osdep_c_, _drv_err_, ("rtw_xmit_entry: rtw_if_up fail\n"));
+ goto drop_packet;
+ }
+
+ rtw_check_xmit_resource(padapter, pkt);
+
+ if (!rtw_mc2u_disable && check_fwstate(pmlmepriv, WIFI_AP_STATE) &&
+ (IP_MCAST_MAC(pkt->data) || ICMPV6_MCAST_MAC(pkt->data)) &&
+ (padapter->registrypriv.wifi_spec == 0)) {
+ if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME/4)) {
+ res = rtw_mlcst2unicst(padapter, pkt);
+ if (res)
+ goto exit;
+ }
+ }
+
+ res = rtw_xmit(padapter, &pkt);
+ if (res < 0)
+ goto drop_packet;
+
+ pxmitpriv->tx_pkts++;
+ RT_TRACE(_module_xmit_osdep_c_, _drv_info_, ("rtw_xmit_entry: tx_pkts=%d\n", (u32)pxmitpriv->tx_pkts));
+ goto exit;
+
+drop_packet:
+ pxmitpriv->tx_drop++;
+ dev_kfree_skb_any(pkt);
+ RT_TRACE(_module_xmit_osdep_c_, _drv_notice_, ("rtw_xmit_entry: drop, tx_drop=%d\n", (u32)pxmitpriv->tx_drop));
+
+exit:
+
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff