--- /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 <drv_types.h>
+#include <hal_data.h>
+
+#define DBG_DUMP_OS_QUEUE_CTL 0
+
+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)
+{
+
+#ifdef CONFIG_TCP_CSUM_OFFLOAD_TX
+ struct sk_buff *skb = (struct sk_buff *)pkt;
+ pattrib->hw_tcp_csum = 0;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ if (skb_shinfo(skb)->nr_frags == 0) {
+ const struct iphdr *ip = ip_hdr(skb);
+ if (ip->protocol == IPPROTO_TCP) {
+ /* TCP checksum offload by HW */
+ RTW_INFO("CHECKSUM_PARTIAL TCP\n");
+ pattrib->hw_tcp_csum = 1;
+ /* skb_checksum_help(skb); */
+ } else if (ip->protocol == IPPROTO_UDP) {
+ /* RTW_INFO("CHECKSUM_PARTIAL UDP\n"); */
+ skb_checksum_help(skb);
+ } else {
+ RTW_INFO("%s-%d TCP CSUM offload Error!!\n", __FUNCTION__, __LINE__);
+ WARN_ON(1); /* we need a WARN() */
+ }
+ } else { /* IP fragmentation case */
+ RTW_INFO("%s-%d nr_frags != 0, using skb_checksum_help(skb);!!\n", __FUNCTION__, __LINE__);
+ skb_checksum_help(skb);
+ }
+ }
+#endif
+
+}
+
+int rtw_os_xmit_resource_alloc(_adapter *padapter, struct xmit_buf *pxmitbuf, u32 alloc_sz, u8 flag)
+{
+ if (alloc_sz > 0) {
+#ifdef CONFIG_USE_USB_BUFFER_ALLOC_TX
+ struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
+ struct usb_device *pusbd = pdvobjpriv->pusbdev;
+
+ pxmitbuf->pallocated_buf = rtw_usb_buffer_alloc(pusbd, (size_t)alloc_sz, &pxmitbuf->dma_transfer_addr);
+ pxmitbuf->pbuf = pxmitbuf->pallocated_buf;
+ if (pxmitbuf->pallocated_buf == NULL)
+ return _FAIL;
+#else /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
+
+ 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);
+
+#endif /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
+ }
+
+ if (flag) {
+#ifdef CONFIG_USB_HCI
+ int i;
+ for (i = 0; i < 8; i++) {
+ pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (pxmitbuf->pxmit_urb[i] == NULL) {
+ RTW_INFO("pxmitbuf->pxmit_urb[i]==NULL");
+ return _FAIL;
+ }
+ }
+#endif
+ }
+
+ return _SUCCESS;
+}
+
+void rtw_os_xmit_resource_free(_adapter *padapter, struct xmit_buf *pxmitbuf, u32 free_sz, u8 flag)
+{
+ if (flag) {
+#ifdef CONFIG_USB_HCI
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ if (pxmitbuf->pxmit_urb[i]) {
+ /* usb_kill_urb(pxmitbuf->pxmit_urb[i]); */
+ usb_free_urb(pxmitbuf->pxmit_urb[i]);
+ }
+ }
+#endif
+ }
+
+ if (free_sz > 0) {
+#ifdef CONFIG_USE_USB_BUFFER_ALLOC_TX
+ struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
+ struct usb_device *pusbd = pdvobjpriv->pusbdev;
+
+ rtw_usb_buffer_free(pusbd, (size_t)free_sz, pxmitbuf->pallocated_buf, pxmitbuf->dma_transfer_addr);
+ pxmitbuf->pallocated_buf = NULL;
+ pxmitbuf->dma_transfer_addr = 0;
+#else /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
+ if (pxmitbuf->pallocated_buf)
+ rtw_mfree(pxmitbuf->pallocated_buf, free_sz);
+#endif /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
+ }
+}
+
+void dump_os_queue(void *sel, _adapter *padapter)
+{
+ struct net_device *ndev = padapter->pnetdev;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ RTW_PRINT_SEL(sel, "os_queue[%d]:%s\n"
+ , i, __netif_subqueue_stopped(ndev, i) ? "stopped" : "waked");
+ }
+#else
+ RTW_PRINT_SEL(sel, "os_queue:%s\n"
+ , netif_queue_stopped(ndev) ? "stopped" : "waked");
+#endif
+}
+
+#define WMM_XMIT_THRESHOLD (NR_XMITFRAME*2/5)
+
+static inline bool rtw_os_need_wake_queue(_adapter *padapter, u16 qidx)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+ if (padapter->registrypriv.wifi_spec) {
+ if (pxmitpriv->hwxmits[qidx].accnt < WMM_XMIT_THRESHOLD)
+ return _TRUE;
+ } else {
+#ifdef CONFIG_MCC_MODE
+ if (MCC_EN(padapter)) {
+ if (rtw_hal_check_mcc_status(padapter, MCC_STATUS_DOING_MCC)
+ && MCC_STOP(padapter))
+ return _FALSE;
+ }
+#endif /* CONFIG_MCC_MODE */
+ return _TRUE;
+ }
+ return _FALSE;
+#else
+#ifdef CONFIG_MCC_MODE
+ if (MCC_EN(padapter)) {
+ if (rtw_hal_check_mcc_status(padapter, MCC_STATUS_DOING_MCC)
+ && MCC_STOP(padapter))
+ return _FALSE;
+ }
+#endif /* CONFIG_MCC_MODE */
+ return _TRUE;
+#endif
+}
+
+static inline bool rtw_os_need_stop_queue(_adapter *padapter, u16 qidx)
+{
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ if (padapter->registrypriv.wifi_spec) {
+ /* No free space for Tx, tx_worker is too slow */
+ if (pxmitpriv->hwxmits[qidx].accnt > WMM_XMIT_THRESHOLD)
+ return _TRUE;
+ } else {
+ if (pxmitpriv->free_xmitframe_cnt <= 4)
+ return _TRUE;
+ }
+#else
+ if (pxmitpriv->free_xmitframe_cnt <= 4)
+ return _TRUE;
+#endif
+ return _FALSE;
+}
+
+void rtw_os_pkt_complete(_adapter *padapter, _pkt *pkt)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ u16 qidx;
+
+ qidx = skb_get_queue_mapping(pkt);
+ if (rtw_os_need_wake_queue(padapter, qidx)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_wake_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), qidx);
+ netif_wake_subqueue(padapter->pnetdev, qidx);
+ }
+#else
+ if (rtw_os_need_wake_queue(padapter, 0)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_wake_queue\n", FUNC_ADPT_ARG(padapter));
+ netif_wake_queue(padapter->pnetdev);
+ }
+#endif
+
+ rtw_skb_free(pkt);
+}
+
+void rtw_os_xmit_complete(_adapter *padapter, struct xmit_frame *pxframe)
+{
+ if (pxframe->pkt)
+ rtw_os_pkt_complete(padapter, pxframe->pkt);
+
+ pxframe->pkt = NULL;
+}
+
+void rtw_os_xmit_schedule(_adapter *padapter)
+{
+#if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
+ _adapter *pri_adapter = GET_PRIMARY_ADAPTER(padapter);
+
+ if (!padapter)
+ return;
+
+ if (_rtw_queue_empty(&padapter->xmitpriv.pending_xmitbuf_queue) == _FALSE)
+ _rtw_up_sema(&pri_adapter->xmitpriv.xmit_sema);
+
+
+#else
+ _irqL irqL;
+ struct xmit_priv *pxmitpriv;
+
+ if (!padapter)
+ return;
+
+ pxmitpriv = &padapter->xmitpriv;
+
+ _enter_critical_bh(&pxmitpriv->lock, &irqL);
+
+ if (rtw_txframes_pending(padapter))
+ tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
+
+ _exit_critical_bh(&pxmitpriv->lock, &irqL);
+
+#if defined(CONFIG_PCI_HCI) && defined(CONFIG_XMIT_THREAD_MODE)
+ if (_rtw_queue_empty(&padapter->xmitpriv.pending_xmitbuf_queue) == _FALSE)
+ _rtw_up_sema(&padapter->xmitpriv.xmit_sema);
+#endif
+
+
+#endif
+}
+
+static bool rtw_check_xmit_resource(_adapter *padapter, _pkt *pkt)
+{
+ bool busy = _FALSE;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ u16 qidx;
+
+ qidx = skb_get_queue_mapping(pkt);
+ if (rtw_os_need_stop_queue(padapter, qidx)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_stop_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), qidx);
+ netif_stop_subqueue(padapter->pnetdev, qidx);
+ busy = _TRUE;
+ }
+#else
+ if (rtw_os_need_stop_queue(padapter, 0)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_stop_queue\n", FUNC_ADPT_ARG(padapter));
+ rtw_netif_stop_queue(padapter->pnetdev);
+ busy = _TRUE;
+ }
+#endif
+ return busy;
+}
+
+void rtw_os_wake_queue_at_free_stainfo(_adapter *padapter, int *qcnt_freed)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ if (qcnt_freed[i] == 0)
+ continue;
+
+ if (rtw_os_need_wake_queue(padapter, i)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_wake_subqueue[%d]\n", FUNC_ADPT_ARG(padapter), i);
+ netif_wake_subqueue(padapter->pnetdev, i);
+ }
+ }
+#else
+ if (qcnt_freed[0] || qcnt_freed[1] || qcnt_freed[2] || qcnt_freed[3]) {
+ if (rtw_os_need_wake_queue(padapter, 0)) {
+ if (DBG_DUMP_OS_QUEUE_CTL)
+ RTW_INFO(FUNC_ADPT_FMT": netif_wake_queue\n", FUNC_ADPT_ARG(padapter));
+ netif_wake_queue(padapter->pnetdev);
+ }
+ }
+#endif
+}
+
+#ifdef CONFIG_TX_MCAST2UNI
+static int rtw_mlcst2unicst(_adapter *padapter, struct sk_buff *skb)
+{
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ _irqL irqL;
+ _list *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);
+
+ _enter_critical_bh(&pstapriv->asoc_list_lock, &irqL);
+ phead = &pstapriv->asoc_list;
+ plist = get_next(phead);
+
+ /* free sta asoc_queue */
+ while ((rtw_end_of_queue_search(phead, plist)) == _FALSE) {
+ 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;
+ }
+ _exit_critical_bh(&pstapriv->asoc_list_lock, &irqL);
+
+ 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 (_rtw_memcmp(psta->hwaddr, &skb->data[6], 6) == _TRUE
+ || _rtw_memcmp(psta->hwaddr, null_addr, 6) == _TRUE
+ || _rtw_memcmp(psta->hwaddr, bc_addr, 6) == _TRUE
+ ) {
+ 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) {
+ _rtw_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);
+ RTW_INFO("%s()-%d: rtw_xmit() return error! res=%d\n", __FUNCTION__, __LINE__, res);
+ pxmitpriv->tx_drop++;
+ rtw_skb_free(newskb);
+ }
+ } else {
+ DBG_COUNTER(padapter->tx_logs.os_tx_m2u_entry_err_skb);
+ RTW_INFO("%s-%d: rtw_skb_copy() failed!\n", __FUNCTION__, __LINE__);
+ pxmitpriv->tx_drop++;
+ /* rtw_skb_free(skb); */
+ return _FALSE; /* Caller shall tx this multicast frame via normal way. */
+ }
+ }
+
+ rtw_skb_free(skb);
+ return _TRUE;
+}
+#endif /* CONFIG_TX_MCAST2UNI */
+
+
+int _rtw_xmit_entry(_pkt *pkt, _nic_hdl pnetdev)
+{
+ _adapter *padapter = (_adapter *)rtw_netdev_priv(pnetdev);
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+#ifdef CONFIG_TX_MCAST2UNI
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+#endif /* CONFIG_TX_MCAST2UNI */
+ s32 res = 0;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+ u16 queue;
+#endif
+
+
+ if (padapter->registrypriv.mp_mode) {
+ RTW_INFO("MP_TX_DROP_OS_FRAME\n");
+ goto drop_packet;
+ }
+ DBG_COUNTER(padapter->tx_logs.os_tx);
+
+ if (rtw_if_up(padapter) == _FALSE) {
+ DBG_COUNTER(padapter->tx_logs.os_tx_err_up);
+ #ifdef DBG_TX_DROP_FRAME
+ 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
+ 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 {
+ /* RTW_INFO("Stop M2U(%d, %d)! ", pxmitpriv->free_xmitframe_cnt, pxmitpriv->free_xmitbuf_cnt); */
+ /* RTW_INFO("!m2u ); */
+ 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;
+}
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