diff options
Diffstat (limited to 'drivers/staging/rtl8723bs/os_dep/xmit_linux.c')
| -rw-r--r-- | drivers/staging/rtl8723bs/os_dep/xmit_linux.c | 226 |
1 files changed, 226 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 000000000..1eeabfffd --- /dev/null +++ b/drivers/staging/rtl8723bs/os_dep/xmit_linux.c @@ -0,0 +1,226 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * + * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. + * + ******************************************************************************/ +#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(struct sk_buff *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; +} + +signed int rtw_endofpktfile(struct pkt_file *pfile) +{ + if (pfile->pkt_len == 0) + return true; + return false; +} + +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) + 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, 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 adapter *pri_adapter = padapter; + + if (!padapter) + return; + + if (!list_empty(&padapter->xmitpriv.pending_xmitbuf_queue.queue)) + complete(&pri_adapter->xmitpriv.xmit_comp); +} + +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; + 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; + + spin_lock_bh(&pstapriv->asoc_list_lock); + phead = &pstapriv->asoc_list; + /* free sta asoc_queue */ + list_for_each(plist, phead) { + int stainfo_offset; + + psta = list_entry(plist, struct sta_info, asoc_list); + + 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)) + 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)) + continue; + + newskb = rtw_skb_copy(skb); + + if (newskb) { + memcpy(newskb->data, psta->hwaddr, 6); + res = rtw_xmit(padapter, &newskb); + if (res < 0) { + pxmitpriv->tx_drop++; + dev_kfree_skb_any(newskb); + } + } else { + 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; +} + +void _rtw_xmit_entry(struct sk_buff *pkt, struct net_device *pnetdev) +{ + struct adapter *padapter = rtw_netdev_priv(pnetdev); + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + s32 res = 0; + + if (rtw_if_up(padapter) == false) + 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) + ) + && padapter->registrypriv.wifi_spec == 0) { + if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME / 4)) { + res = rtw_mlcst2unicst(padapter, pkt); + if (res) + return; + } + } + + res = rtw_xmit(padapter, &pkt); + if (res < 0) + goto drop_packet; + + return; + +drop_packet: + pxmitpriv->tx_drop++; + dev_kfree_skb_any(pkt); +} + +netdev_tx_t rtw_xmit_entry(struct sk_buff *pkt, struct net_device *pnetdev) +{ + if (pkt) + _rtw_xmit_entry(pkt, pnetdev); + + return NETDEV_TX_OK; +} |