| /****************************************************************************** |
| * |
| * 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; |
| } |