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8821cu-20210916/os_dep/linux/xmit_linux.c

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2022-11-17 14:26:57 +00:00
/******************************************************************************
*
* Copyright(c) 2007 - 2017 Realtek Corporation.
*
* 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>
#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;
struct iphdr *iph = NULL;
struct ipv6hdr *i6ph = NULL;
struct udphdr *uh = NULL;
struct tcphdr *th = NULL;
u8 protocol = 0xFF;
if (skb->protocol == htons(ETH_P_IP)) {
iph = (struct iphdr *)skb_network_header(skb);
protocol = iph->protocol;
} else if (skb->protocol == htons(ETH_P_IPV6)) {
i6ph = (struct ipv6hdr *)skb_network_header(skb);
protocol = i6ph->nexthdr;
} else
{}
/* HW unable to compute CSUM if header & payload was be encrypted by SW(cause TXDMA error) */
if (pattrib->bswenc == _TRUE) {
if (skb->ip_summed == CHECKSUM_PARTIAL)
skb_checksum_help(skb);
return;
}
/* For HW rule, clear ipv4_csum & UDP/TCP_csum if it is UDP/TCP packet */
switch (protocol) {
case IPPROTO_UDP:
uh = (struct udphdr *)skb_transport_header(skb);
uh->check = 0;
if (iph)
iph->check = 0;
pattrib->hw_csum = _TRUE;
break;
case IPPROTO_TCP:
th = (struct tcphdr *)skb_transport_header(skb);
th->check = 0;
if (iph)
iph->check = 0;
pattrib->hw_csum = _TRUE;
break;
default:
break;
}
#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 os_qid)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
if (padapter->registrypriv.wifi_spec) {
if (pxmitpriv->hwxmits[os_qid].accnt < WMM_XMIT_THRESHOLD)
return _TRUE;
#ifdef DBG_CONFIG_ERROR_DETECT
#ifdef DBG_CONFIG_ERROR_RESET
} else if (rtw_hal_sreset_inprogress(padapter) == _TRUE) {
return _FALSE;
#endif/* #ifdef DBG_CONFIG_ERROR_RESET */
#endif/* #ifdef DBG_CONFIG_ERROR_DETECT */
} 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 os_qid)
{
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[os_qid].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)
{
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;
if (!padapter)
return;
pri_adapter = GET_PRIMARY_ADAPTER(padapter);
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
}
void rtw_os_check_wakup_queue(_adapter *adapter, u16 os_qid)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
if (rtw_os_need_wake_queue(adapter, os_qid)) {
if (DBG_DUMP_OS_QUEUE_CTL)
RTW_INFO(FUNC_ADPT_FMT": netif_wake_subqueue[%d]\n", FUNC_ADPT_ARG(adapter), os_qid);
netif_wake_subqueue(adapter->pnetdev, os_qid);
}
#else
if (rtw_os_need_wake_queue(adapter, 0)) {
if (DBG_DUMP_OS_QUEUE_CTL)
RTW_INFO(FUNC_ADPT_FMT": netif_wake_queue\n", FUNC_ADPT_ARG(adapter));
netif_wake_queue(adapter->pnetdev);
}
#endif
}
bool rtw_os_check_stop_queue(_adapter *adapter, u16 os_qid)
{
bool busy = _FALSE;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
if (rtw_os_need_stop_queue(adapter, os_qid)) {
if (DBG_DUMP_OS_QUEUE_CTL)
RTW_INFO(FUNC_ADPT_FMT": netif_stop_subqueue[%d]\n", FUNC_ADPT_ARG(adapter), os_qid);
netif_stop_subqueue(adapter->pnetdev, os_qid);
busy = _TRUE;
}
#else
if (rtw_os_need_stop_queue(adapter, 0)) {
if (DBG_DUMP_OS_QUEUE_CTL)
RTW_INFO(FUNC_ADPT_FMT": netif_stop_queue\n", FUNC_ADPT_ARG(adapter));
rtw_netif_stop_queue(adapter->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
}
int _rtw_xmit_entry(_pkt *pkt, _nic_hdl pnetdev)
{
_adapter *padapter = (_adapter *)rtw_netdev_priv(pnetdev);
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
#ifdef CONFIG_TCP_CSUM_OFFLOAD_TX
struct sk_buff *skb = pkt;
struct sk_buff *segs, *nskb;
netdev_features_t features = padapter->pnetdev->features;
#endif
u16 os_qid = 0;
s32 res = 0;
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;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
os_qid = skb_get_queue_mapping(pkt);
#endif
#ifdef CONFIG_TCP_CSUM_OFFLOAD_TX
if (skb_shinfo(skb)->gso_size) {
/* split a big(65k) skb into several small(1.5k) skbs */
features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
segs = skb_gso_segment(skb, features);
if (IS_ERR(segs) || !segs)
goto drop_packet;
do {
nskb = segs;
segs = segs->next;
nskb->next = NULL;
rtw_mstat_update( MSTAT_TYPE_SKB, MSTAT_ALLOC_SUCCESS, nskb->truesize);
res = rtw_xmit(padapter, &nskb, os_qid);
if (res < 0) {
#ifdef DBG_TX_DROP_FRAME
RTW_INFO("DBG_TX_DROP_FRAME %s rtw_xmit fail\n", __FUNCTION__);
#endif
pxmitpriv->tx_drop++;
rtw_os_pkt_complete(padapter, nskb);
}
} while (segs);
rtw_os_pkt_complete(padapter, skb);
goto exit;
}
#endif
res = rtw_xmit(padapter, &pkt, os_qid);
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;
}
#ifdef CONFIG_CUSTOMER_ALIBABA_GENERAL
int check_alibaba_meshpkt(struct sk_buff *skb)
{
u16 protocol;
if (skb)
return (htons(skb->protocol) == ETH_P_ALL);
return _FALSE;
}
s32 rtw_alibaba_mesh_xmit_entry(_pkt *pkt, struct net_device *ndev)
{
u16 frame_ctl;
_adapter *padapter = (_adapter *)rtw_netdev_priv(ndev);
struct pkt_file pktfile;
struct rtw_ieee80211_hdr *pwlanhdr;
struct pkt_attrib *pattrib;
struct xmit_frame *pmgntframe;
struct mlme_ext_priv *pmlmeext = &(padapter->mlmeextpriv);
struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
unsigned char *pframe;
struct sk_buff *skb = (struct sk_buff *)pkt;
int len = skb->len;
rtw_mstat_update(MSTAT_TYPE_SKB, MSTAT_ALLOC_SUCCESS, skb->truesize);
pmgntframe = alloc_mgtxmitframe(pxmitpriv);
if (pmgntframe == NULL) {
goto fail;
return -1;
}
pattrib = &pmgntframe->attrib;
update_mgntframe_attrib(padapter, pattrib);
_rtw_memset(pmgntframe->buf_addr, 0, WLANHDR_OFFSET + TXDESC_OFFSET);
pframe = (u8 *)(pmgntframe->buf_addr) + TXDESC_OFFSET;
pwlanhdr = (struct rtw_ieee80211_hdr *)pframe;
_rtw_open_pktfile(pkt, &pktfile);
_rtw_pktfile_read(&pktfile, pframe, len);
pattrib->type = pframe[0] & 0x0C;
pattrib->subtype = pframe[0] & 0xF0;
pattrib->raid = rtw_get_mgntframe_raid(padapter, WIRELESS_11G);
pattrib->rate = MGN_24M;
pattrib->pktlen = len;
SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
pmlmeext->mgnt_seq++;
RTW_DBG_DUMP("rtw_alibaba_mesh_xmit_entry payload:", skb->data, len);
pattrib->last_txcmdsz = pattrib->pktlen;
dump_mgntframe(padapter, pmgntframe);
fail:
rtw_skb_free(skb);
return 0;
}
#endif
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) {
#ifdef CONFIG_CUSTOMER_ALIBABA_GENERAL
if (check_alibaba_meshpkt(pkt)) {
return rtw_alibaba_mesh_xmit_entry(pkt, pnetdev);
}
#endif
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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