1 files changed, 296 insertions, 0 deletions

diff --git a/drivers/staging/rtl8723bs/os_dep/xmit_linux.c b/drivers/staging/rtl8723bs/os_dep/xmit_linux.c
new file mode 100644
index 0000000..7696816
--- /dev/null
+++ b/drivers/staging/rtl8723bs/os_dep/xmit_linux.c
@@ -0,0 +1,296 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
+#define _XMIT_OSDEP_C_
+
+#include <drv_types.h>
+#include <rtw_debug.h>
+
+
+uint rtw_remainder_len(struct pkt_file *pfile)
+{
+	return (pfile->buf_len - ((SIZE_PTR)(pfile->cur_addr) - (SIZE_PTR)(pfile->buf_start)));
+}
+
+void _rtw_open_pktfile (_pkt *pktptr, struct pkt_file *pfile)
+{
+	pfile->pkt = pktptr;
+	pfile->cur_addr = pfile->buf_start = pktptr->data;
+	pfile->pkt_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;
+}
+
+sint rtw_endofpktfile(struct pkt_file *pfile)
+{
+	if (pfile->pkt_len == 0)
+		return true;
+	return false;
+}
+
+void rtw_set_tx_chksum_offload(_pkt *pkt, struct pkt_attrib *pattrib)
+{
+
+}
+
+int rtw_os_xmit_resource_alloc(struct adapter *padapter, struct xmit_buf *pxmitbuf, u32 alloc_sz, u8 flag)
+{
+	if (alloc_sz > 0) {
+		pxmitbuf->pallocated_buf = rtw_zmalloc(alloc_sz);
+		if (pxmitbuf->pallocated_buf == NULL)
+		{
+			return _FAIL;
+		}
+
+		pxmitbuf->pbuf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(pxmitbuf->pallocated_buf), XMITBUF_ALIGN_SZ);
+	}
+
+	return _SUCCESS;
+}
+
+void rtw_os_xmit_resource_free(struct adapter *padapter, struct xmit_buf *pxmitbuf, u32 free_sz, u8 flag)
+{
+	if (free_sz > 0)
+		kfree(pxmitbuf->pallocated_buf);
+}
+
+#define WMM_XMIT_THRESHOLD	(NR_XMITFRAME*2/5)
+
+void rtw_os_pkt_complete(struct adapter *padapter, _pkt *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 adapter *pri_adapter = padapter;
+
+	if (!padapter)
+		return;
+
+	if (!list_empty(&padapter->xmitpriv.pending_xmitbuf_queue.queue))
+		up(&pri_adapter->xmitpriv.xmit_sema);
+}
+
+static void rtw_check_xmit_resource(struct adapter *padapter, _pkt *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) {
+			/* DBG_871X("%s(): stop netif_subqueue[%d]\n", __func__, queue); */
+			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;
+	u8 chk_alive_num = 0;
+	char chk_alive_list[NUM_STA];
+	u8 bc_addr[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+	u8 null_addr[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+	int i;
+	s32	res;
+
+	DBG_COUNTER(padapter->tx_logs.os_tx_m2u);
+
+	spin_lock_bh(&pstapriv->asoc_list_lock);
+	phead = &pstapriv->asoc_list;
+	plist = get_next(phead);
+
+	/* free sta asoc_queue */
+	while (phead != plist) {
+		int stainfo_offset;
+		psta = LIST_CONTAINOR(plist, struct sta_info, asoc_list);
+		plist = get_next(plist);
+
+		stainfo_offset = rtw_stainfo_offset(pstapriv, psta);
+		if (stainfo_offset_valid(stainfo_offset)) {
+			chk_alive_list[chk_alive_num++] = stainfo_offset;
+		}
+	}
+	spin_unlock_bh(&pstapriv->asoc_list_lock);
+
+	for (i = 0; i < chk_alive_num; i++) {
+		psta = rtw_get_stainfo_by_offset(pstapriv, chk_alive_list[i]);
+		if (!(psta->state &_FW_LINKED))
+		{
+			DBG_COUNTER(padapter->tx_logs.os_tx_m2u_ignore_fw_linked);
+			continue;
+		}
+
+		/* avoid come from STA1 and send back STA1 */
+		if (!memcmp(psta->hwaddr, &skb->data[6], 6)
+			|| !memcmp(psta->hwaddr, null_addr, 6)
+			|| !memcmp(psta->hwaddr, bc_addr, 6)
+		)
+		{
+			DBG_COUNTER(padapter->tx_logs.os_tx_m2u_ignore_self);
+			continue;
+		}
+
+		DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry);
+
+		newskb = rtw_skb_copy(skb);
+
+		if (newskb) {
+			memcpy(newskb->data, psta->hwaddr, 6);
+			res = rtw_xmit(padapter, &newskb);
+			if (res < 0) {
+				DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry_err_xmit);
+				DBG_871X("%s()-%d: rtw_xmit() return error!\n", __func__, __LINE__);
+				pxmitpriv->tx_drop++;
+				dev_kfree_skb_any(newskb);
+			}
+		} else {
+			DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry_err_skb);
+			DBG_871X("%s-%d: rtw_skb_copy() failed!\n", __func__, __LINE__);
+			pxmitpriv->tx_drop++;
+			/* dev_kfree_skb_any(skb); */
+			return false;	/*  Caller shall tx this multicast frame via normal way. */
+		}
+	}
+
+	dev_kfree_skb_any(skb);
+	return true;
+}
+
+int _rtw_xmit_entry(_pkt *pkt, _nic_hdl 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;
+
+	DBG_COUNTER(padapter->tx_logs.os_tx);
+	RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("+xmit_enry\n"));
+
+	if (rtw_if_up(padapter) == false) {
+		DBG_COUNTER(padapter->tx_logs.os_tx_err_up);
+		RT_TRACE(_module_xmit_osdep_c_, _drv_err_, ("rtw_xmit_entry: rtw_if_up fail\n"));
+		#ifdef DBG_TX_DROP_FRAME
+		DBG_871X("DBG_TX_DROP_FRAME %s if_up fail\n", __func__);
+		#endif
+		goto drop_packet;
+	}
+
+	rtw_check_xmit_resource(padapter, pkt);
+
+	if (!rtw_mc2u_disable
+		&& check_fwstate(pmlmepriv, WIFI_AP_STATE) == true
+		&& (IP_MCAST_MAC(pkt->data)
+			|| ICMPV6_MCAST_MAC(pkt->data)
+			#ifdef CONFIG_TX_BCAST2UNI
+			|| is_broadcast_mac_addr(pkt->data)
+			#endif
+			)
+		&& (padapter->registrypriv.wifi_spec == 0)
+		)
+	{
+		if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME/4)) {
+			res = rtw_mlcst2unicst(padapter, pkt);
+			if (res == true) {
+				goto exit;
+			}
+		} else {
+			/* DBG_871X("Stop M2U(%d, %d)! ", pxmitpriv->free_xmitframe_cnt, pxmitpriv->free_xmitbuf_cnt); */
+			/* DBG_871X("!m2u); */
+			DBG_COUNTER(padapter->tx_logs.os_tx_m2u_stop);
+		}
+	}
+
+	res = rtw_xmit(padapter, &pkt);
+	if (res < 0) {
+		#ifdef DBG_TX_DROP_FRAME
+		DBG_871X("DBG_TX_DROP_FRAME %s rtw_xmit fail\n", __func__);
+		#endif
+		goto drop_packet;
+	}
+
+	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;
+}
+
+int rtw_xmit_entry(_pkt *pkt, _nic_hdl pnetdev)
+{
+	int ret = 0;
+
+	if (pkt) {
+		rtw_mstat_update(MSTAT_TYPE_SKB, MSTAT_ALLOC_SUCCESS, pkt->truesize);
+		ret = _rtw_xmit_entry(pkt, pnetdev);
+	}
+
+	return ret;
+}