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mirror of https://github.com/morrownr/8821cu-20210916.git synced 2024-12-23 06:42:50 +00:00
8821cu-20210916/os_dep/linux/recv_linux.c
2022-11-17 08:26:57 -06:00

741 lines
20 KiB
C

/******************************************************************************
*
* 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 _RECV_OSDEP_C_
#include <drv_types.h>
int rtw_os_recvframe_duplicate_skb(_adapter *padapter, union recv_frame *pcloneframe, _pkt *pskb)
{
int res = _SUCCESS;
_pkt *pkt_copy = NULL;
if (pskb == NULL) {
RTW_INFO("%s [WARN] skb == NULL, drop frag frame\n", __func__);
return _FAIL;
}
#if 1
pkt_copy = rtw_skb_copy(pskb);
if (pkt_copy == NULL) {
RTW_INFO("%s [WARN] rtw_skb_copy fail , drop frag frame\n", __func__);
return _FAIL;
}
#else
pkt_copy = rtw_skb_clone(pskb);
if (pkt_copy == NULL) {
RTW_INFO("%s [WARN] rtw_skb_clone fail , drop frag frame\n", __func__);
return _FAIL;
}
#endif
pkt_copy->dev = padapter->pnetdev;
pcloneframe->u.hdr.pkt = pkt_copy;
pcloneframe->u.hdr.rx_head = pkt_copy->head;
pcloneframe->u.hdr.rx_data = pkt_copy->data;
pcloneframe->u.hdr.rx_end = skb_end_pointer(pkt_copy);
pcloneframe->u.hdr.rx_tail = skb_tail_pointer(pkt_copy);
pcloneframe->u.hdr.len = pkt_copy->len;
return res;
}
int rtw_os_alloc_recvframe(_adapter *padapter, union recv_frame *precvframe, u8 *pdata, _pkt *pskb)
{
int res = _SUCCESS;
u8 shift_sz = 0;
u32 skb_len, alloc_sz;
_pkt *pkt_copy = NULL;
struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
if (pdata == NULL) {
precvframe->u.hdr.pkt = NULL;
res = _FAIL;
return res;
}
/* Modified by Albert 20101213 */
/* For 8 bytes IP header alignment. */
shift_sz = pattrib->qos ? 6 : 0; /* Qos data, wireless lan header length is 26 */
skb_len = pattrib->pkt_len;
/* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
/* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
/* alloc_sz = 1664; */ /* 1664 is 128 alignment. */
alloc_sz = (skb_len <= 1650) ? 1664 : (skb_len + 14);
} else {
alloc_sz = skb_len;
/* 6 is for IP header 8 bytes alignment in QoS packet case. */
/* 8 is for skb->data 4 bytes alignment. */
alloc_sz += 14;
}
pkt_copy = rtw_skb_alloc(alloc_sz);
if (pkt_copy) {
pkt_copy->dev = padapter->pnetdev;
pkt_copy->len = skb_len;
precvframe->u.hdr.pkt = pkt_copy;
precvframe->u.hdr.rx_head = pkt_copy->head;
precvframe->u.hdr.rx_end = pkt_copy->data + alloc_sz;
skb_reserve(pkt_copy, 8 - ((SIZE_PTR)(pkt_copy->data) & 7)); /* force pkt_copy->data at 8-byte alignment address */
skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
_rtw_memcpy(pkt_copy->data, pdata, skb_len);
precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data;
} else {
#if 0
{
rtw_free_recvframe(precvframe_if2, &precvpriv->free_recv_queue);
rtw_enqueue_recvbuf_to_head(precvbuf, &precvpriv->recv_buf_pending_queue);
/* The case of can't allocate skb is serious and may never be recovered,
once bDriverStopped is enable, this task should be stopped.*/
if (!rtw_is_drv_stopped(secondary_padapter))
#ifdef PLATFORM_LINUX
tasklet_schedule(&precvpriv->recv_tasklet);
#endif
return ret;
}
#endif
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
RTW_INFO("%s:can not allocate memory for skb copy\n", __func__);
precvframe->u.hdr.pkt = NULL;
/* rtw_free_recvframe(precvframe, pfree_recv_queue); */
/*exit_rtw_os_recv_resource_alloc;*/
res = _FAIL;
#else
if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
RTW_INFO("%s: alloc_skb fail , drop frag frame\n", __FUNCTION__);
/* rtw_free_recvframe(precvframe, pfree_recv_queue); */
res = _FAIL;
goto exit_rtw_os_recv_resource_alloc;
}
if (pskb == NULL) {
res = _FAIL;
goto exit_rtw_os_recv_resource_alloc;
}
precvframe->u.hdr.pkt = rtw_skb_clone(pskb);
if (precvframe->u.hdr.pkt) {
RTW_INFO("%s: rtw_skb_clone success, RX throughput may be low!\n", __FUNCTION__);
precvframe->u.hdr.pkt->dev = padapter->pnetdev;
precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pdata;
precvframe->u.hdr.rx_end = pdata + alloc_sz;
} else {
RTW_INFO("%s: rtw_skb_clone fail\n", __FUNCTION__);
/* rtw_free_recvframe(precvframe, pfree_recv_queue); */
/*exit_rtw_os_recv_resource_alloc;*/
res = _FAIL;
}
#endif
}
exit_rtw_os_recv_resource_alloc:
return res;
}
void rtw_os_free_recvframe(union recv_frame *precvframe)
{
if (precvframe->u.hdr.pkt) {
rtw_os_pkt_free(precvframe->u.hdr.pkt);
precvframe->u.hdr.pkt = NULL;
}
}
/* init os related resource in struct recv_priv */
int rtw_os_recv_resource_init(struct recv_priv *precvpriv, _adapter *padapter)
{
int res = _SUCCESS;
#ifdef CONFIG_RTW_NAPI
skb_queue_head_init(&precvpriv->rx_napi_skb_queue);
#endif /* CONFIG_RTW_NAPI */
return res;
}
/* alloc os related resource in union recv_frame */
int rtw_os_recv_resource_alloc(_adapter *padapter, union recv_frame *precvframe)
{
int res = _SUCCESS;
precvframe->u.hdr.pkt = NULL;
return res;
}
/* free os related resource in union recv_frame */
void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
{
sint i;
union recv_frame *precvframe;
precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
#ifdef CONFIG_RTW_NAPI
if (skb_queue_len(&precvpriv->rx_napi_skb_queue))
RTW_WARN("rx_napi_skb_queue not empty\n");
rtw_skb_queue_purge(&precvpriv->rx_napi_skb_queue);
#endif /* CONFIG_RTW_NAPI */
for (i = 0; i < NR_RECVFRAME; i++) {
rtw_os_free_recvframe(precvframe);
precvframe++;
}
}
#if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
#if !defined(CONFIG_RTL8822B) && !defined(CONFIG_RTL8822C)
#ifdef CONFIG_SDIO_RX_COPY
static int sdio_init_recvbuf_with_skb(struct recv_priv *recvpriv, struct recv_buf *rbuf, u32 size)
{
#ifdef CONFIG_PREALLOC_RX_SKB_BUFFER
if (RBUF_IS_PREALLOC(rbuf)) {
rbuf->pskb = rtw_alloc_skb_premem(size);
if (!rbuf->pskb) {
RTW_WARN("%s: Fail to get pre-alloc skb! size=%d\n", __func__, size);
return _FAIL;
}
skb_set_tail_pointer(rbuf->pskb, 0); /* TODO: do this in RTKM */
} else
#else
{
SIZE_PTR tmpaddr = 0;
SIZE_PTR alignment = 0;
rbuf->pskb = rtw_skb_alloc(size + RECVBUFF_ALIGN_SZ);
if (!rbuf->pskb)
return _FAIL;
tmpaddr = (SIZE_PTR)rbuf->pskb->data;
alignment = tmpaddr & (RECVBUFF_ALIGN_SZ - 1);
skb_reserve(rbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
}
#endif
rbuf->pskb->dev = recvpriv->adapter->pnetdev;
/* init recvbuf */
rbuf->phead = rbuf->pskb->head;
rbuf->pdata = rbuf->pskb->data;
rbuf->ptail = skb_tail_pointer(rbuf->pskb);
rbuf->pend = skb_end_pointer(rbuf->pskb);
rbuf->len = 0;
return _SUCCESS;
}
#endif /* CONFIG_SDIO_RX_COPY */
#endif /* !defined(CONFIG_RTL8822B) && !defined(CONFIG_RTL8822C) */
#endif /* defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI) */
/* alloc os related resource in struct recv_buf */
int rtw_os_recvbuf_resource_alloc(_adapter *padapter, struct recv_buf *precvbuf, u32 size)
{
int res = _SUCCESS;
#ifdef CONFIG_USB_HCI
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
struct usb_device *pusbd = pdvobjpriv->pusbdev;
#endif
precvbuf->irp_pending = _FALSE;
precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
if (precvbuf->purb == NULL)
res = _FAIL;
precvbuf->pskb = NULL;
precvbuf->pallocated_buf = precvbuf->pbuf = NULL;
precvbuf->pdata = precvbuf->phead = precvbuf->ptail = precvbuf->pend = NULL;
precvbuf->transfer_len = 0;
precvbuf->len = 0;
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
precvbuf->pallocated_buf = rtw_usb_buffer_alloc(pusbd, (size_t)size, &precvbuf->dma_transfer_addr);
precvbuf->pbuf = precvbuf->pallocated_buf;
if (precvbuf->pallocated_buf == NULL)
return _FAIL;
#endif /* CONFIG_USE_USB_BUFFER_ALLOC_RX */
#elif defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
#if !defined(CONFIG_RTL8822B) && !defined(CONFIG_RTL8822C)
#ifdef CONFIG_SDIO_RX_COPY
res = sdio_init_recvbuf_with_skb(&padapter->recvpriv, precvbuf, size);
#endif
#endif
#endif /* CONFIG_XXX_HCI */
return res;
}
/* free os related resource in struct recv_buf */
int rtw_os_recvbuf_resource_free(_adapter *padapter, struct recv_buf *precvbuf)
{
int ret = _SUCCESS;
#ifdef CONFIG_USB_HCI
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
struct usb_device *pusbd = pdvobjpriv->pusbdev;
rtw_usb_buffer_free(pusbd, (size_t)precvbuf->alloc_sz, precvbuf->pallocated_buf, precvbuf->dma_transfer_addr);
precvbuf->pallocated_buf = NULL;
precvbuf->dma_transfer_addr = 0;
#endif /* CONFIG_USE_USB_BUFFER_ALLOC_RX */
if (precvbuf->purb) {
/* usb_kill_urb(precvbuf->purb); */
usb_free_urb(precvbuf->purb);
}
#endif /* CONFIG_USB_HCI */
if (precvbuf->pskb) {
#ifdef CONFIG_PREALLOC_RX_SKB_BUFFER
if (rtw_free_skb_premem(precvbuf->pskb) != 0)
#endif
rtw_skb_free(precvbuf->pskb);
}
return ret;
}
_pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, const u8 *da, const u8 *sa
, u8 *msdu ,u16 msdu_len, enum rtw_rx_llc_hdl llc_hdl)
{
u8 *data_ptr;
_pkt *sub_skb;
struct rx_pkt_attrib *pattrib;
pattrib = &prframe->u.hdr.attrib;
#ifdef CONFIG_SKB_COPY
sub_skb = rtw_skb_alloc(msdu_len + 14);
if (sub_skb) {
skb_reserve(sub_skb, 14);
data_ptr = (u8 *)skb_put(sub_skb, msdu_len);
_rtw_memcpy(data_ptr, msdu, msdu_len);
} else
#endif /* CONFIG_SKB_COPY */
{
sub_skb = rtw_skb_clone(prframe->u.hdr.pkt);
if (sub_skb) {
sub_skb->data = msdu;
sub_skb->len = msdu_len;
skb_set_tail_pointer(sub_skb, msdu_len);
} else {
RTW_INFO("%s(): rtw_skb_clone() Fail!!!\n", __FUNCTION__);
return NULL;
}
}
if (llc_hdl) {
/* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
skb_pull(sub_skb, SNAP_SIZE);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), sa, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), da, ETH_ALEN);
} else {
/* Leave Ethernet header part of hdr and full payload */
u16 len;
len = htons(sub_skb->len);
_rtw_memcpy(skb_push(sub_skb, 2), &len, 2);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), sa, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), da, ETH_ALEN);
}
return sub_skb;
}
#ifdef CONFIG_RTW_NAPI
static int napi_recv(_adapter *padapter, int budget)
{
_pkt *pskb;
struct recv_priv *precvpriv = &padapter->recvpriv;
int work_done = 0;
struct registry_priv *pregistrypriv = &padapter->registrypriv;
u8 rx_ok;
while ((work_done < budget) &&
(!skb_queue_empty(&precvpriv->rx_napi_skb_queue))) {
pskb = skb_dequeue(&precvpriv->rx_napi_skb_queue);
if (!pskb)
break;
rx_ok = _FALSE;
#ifdef CONFIG_RTW_GRO
/*
cloned SKB use dataref to avoid kernel release it.
But dataref changed in napi_gro_receive.
So, we should prevent cloned SKB go into napi_gro_receive.
*/
if (pregistrypriv->en_gro && !skb_cloned(pskb)) {
#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 12, 0))
if (rtw_napi_gro_receive(&padapter->napi, pskb) != GRO_DROP)
rx_ok = _TRUE;
#else
rtw_napi_gro_receive(&padapter->napi, pskb);
rx_ok = _TRUE;
#endif
goto next;
}
#endif /* CONFIG_RTW_GRO */
if (rtw_netif_receive_skb(padapter->pnetdev, pskb) == NET_RX_SUCCESS)
rx_ok = _TRUE;
next:
if (rx_ok == _TRUE) {
work_done++;
DBG_COUNTER(padapter->rx_logs.os_netif_ok);
} else {
DBG_COUNTER(padapter->rx_logs.os_netif_err);
}
}
return work_done;
}
int rtw_recv_napi_poll(struct napi_struct *napi, int budget)
{
_adapter *padapter = container_of(napi, _adapter, napi);
int work_done = 0;
struct recv_priv *precvpriv = &padapter->recvpriv;
work_done = napi_recv(padapter, budget);
if (work_done < budget) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(CONFIG_PCI_HCI)
napi_complete_done(napi, work_done);
#else
napi_complete(napi);
#endif
if (!skb_queue_empty(&precvpriv->rx_napi_skb_queue))
napi_schedule(napi);
}
return work_done;
}
#ifdef CONFIG_RTW_NAPI_DYNAMIC
void dynamic_napi_th_chk (_adapter *adapter)
{
if (adapter->registrypriv.en_napi) {
struct dvobj_priv *dvobj;
struct registry_priv *registry;
dvobj = adapter_to_dvobj(adapter);
registry = &adapter->registrypriv;
if (dvobj->traffic_stat.cur_rx_tp > registry->napi_threshold)
dvobj->en_napi_dynamic = 1;
else
dvobj->en_napi_dynamic = 0;
}
}
#endif /* CONFIG_RTW_NAPI_DYNAMIC */
#endif /* CONFIG_RTW_NAPI */
void rtw_os_recv_indicate_pkt(_adapter *padapter, _pkt *pkt, union recv_frame *rframe)
{
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
struct recv_priv *precvpriv = &(padapter->recvpriv);
struct registry_priv *pregistrypriv = &padapter->registrypriv;
#ifdef CONFIG_BR_EXT
void *br_port = NULL;
#endif
int ret;
/* Indicat the packets to upper layer */
if (pkt) {
struct ethhdr *ehdr = (struct ethhdr *)pkt->data;
DBG_COUNTER(padapter->rx_logs.os_indicate);
#ifdef CONFIG_BR_EXT
if (!adapter_use_wds(padapter) && check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE) == _TRUE) {
/* Insert NAT2.5 RX here! */
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
br_port = padapter->pnetdev->br_port;
#else
rcu_read_lock();
br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
rcu_read_unlock();
#endif
if (br_port) {
int nat25_handle_frame(_adapter *priv, struct sk_buff *skb);
if (nat25_handle_frame(padapter, pkt) == -1) {
/* priv->ext_stats.rx_data_drops++; */
/* DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n"); */
/* return FAIL; */
#if 1
/* bypass this frame to upper layer!! */
#else
rtw_skb_free(sub_skb);
continue;
#endif
}
}
}
#endif /* CONFIG_BR_EXT */
/* After eth_type_trans process , pkt->data pointer will move from ethrnet header to ip header */
pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
pkt->dev = padapter->pnetdev;
pkt->ip_summed = CHECKSUM_NONE; /* CONFIG_TCP_CSUM_OFFLOAD_RX */
#ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
if ((rframe->u.hdr.attrib.csum_valid == 1)
&& (rframe->u.hdr.attrib.csum_err == 0))
pkt->ip_summed = CHECKSUM_UNNECESSARY;
#endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */
#ifdef CONFIG_RTW_NAPI
#ifdef CONFIG_RTW_NAPI_DYNAMIC
if (!skb_queue_empty(&precvpriv->rx_napi_skb_queue)
&& !adapter_to_dvobj(padapter)->en_napi_dynamic
)
napi_recv(padapter, RTL_NAPI_WEIGHT);
#endif
if (pregistrypriv->en_napi
#ifdef CONFIG_RTW_NAPI_DYNAMIC
&& adapter_to_dvobj(padapter)->en_napi_dynamic
#endif
) {
skb_queue_tail(&precvpriv->rx_napi_skb_queue, pkt);
#ifndef CONFIG_RTW_NAPI_V2
napi_schedule(&padapter->napi);
#endif
return;
}
#endif /* CONFIG_RTW_NAPI */
ret = rtw_netif_rx(padapter->pnetdev, pkt);
if (ret == NET_RX_SUCCESS)
DBG_COUNTER(padapter->rx_logs.os_netif_ok);
else
DBG_COUNTER(padapter->rx_logs.os_netif_err);
}
}
void rtw_handle_tkip_mic_err(_adapter *padapter, struct sta_info *sta, u8 bgroup)
{
#ifdef CONFIG_IOCTL_CFG80211
enum nl80211_key_type key_type = 0;
#endif
union iwreq_data wrqu;
struct iw_michaelmicfailure ev;
struct security_priv *psecuritypriv = &padapter->securitypriv;
systime cur_time = 0;
if (psecuritypriv->last_mic_err_time == 0)
psecuritypriv->last_mic_err_time = rtw_get_current_time();
else {
cur_time = rtw_get_current_time();
if (cur_time - psecuritypriv->last_mic_err_time < 60 * HZ) {
psecuritypriv->btkip_countermeasure = _TRUE;
psecuritypriv->last_mic_err_time = 0;
psecuritypriv->btkip_countermeasure_time = cur_time;
} else
psecuritypriv->last_mic_err_time = rtw_get_current_time();
}
#ifdef CONFIG_IOCTL_CFG80211
if (bgroup)
key_type |= NL80211_KEYTYPE_GROUP;
else
key_type |= NL80211_KEYTYPE_PAIRWISE;
cfg80211_michael_mic_failure(padapter->pnetdev, sta->cmn.mac_addr, key_type, -1, NULL, GFP_ATOMIC);
#endif
_rtw_memset(&ev, 0x00, sizeof(ev));
if (bgroup)
ev.flags |= IW_MICFAILURE_GROUP;
else
ev.flags |= IW_MICFAILURE_PAIRWISE;
ev.src_addr.sa_family = ARPHRD_ETHER;
_rtw_memcpy(ev.src_addr.sa_data, sta->cmn.mac_addr, ETH_ALEN);
_rtw_memset(&wrqu, 0x00, sizeof(wrqu));
wrqu.data.length = sizeof(ev);
#ifndef CONFIG_IOCTL_CFG80211
wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu, (char *) &ev);
#endif
}
#ifdef CONFIG_HOSTAPD_MLME
void rtw_hostapd_mlme_rx(_adapter *padapter, union recv_frame *precv_frame)
{
_pkt *skb;
struct hostapd_priv *phostapdpriv = padapter->phostapdpriv;
struct net_device *pmgnt_netdev = phostapdpriv->pmgnt_netdev;
skb = precv_frame->u.hdr.pkt;
if (skb == NULL)
return;
skb->data = precv_frame->u.hdr.rx_data;
skb->tail = precv_frame->u.hdr.rx_tail;
skb->len = precv_frame->u.hdr.len;
/* pskb_copy = rtw_skb_copy(skb);
* if(skb == NULL) goto _exit; */
skb->dev = pmgnt_netdev;
skb->ip_summed = CHECKSUM_NONE;
skb->pkt_type = PACKET_OTHERHOST;
/* skb->protocol = __constant_htons(0x0019); ETH_P_80211_RAW */
skb->protocol = __constant_htons(0x0003); /*ETH_P_80211_RAW*/
/* RTW_INFO("(1)data=0x%x, head=0x%x, tail=0x%x, mac_header=0x%x, len=%d\n", skb->data, skb->head, skb->tail, skb->mac_header, skb->len); */
/* skb->mac.raw = skb->data; */
skb_reset_mac_header(skb);
/* skb_pull(skb, 24); */
_rtw_memset(skb->cb, 0, sizeof(skb->cb));
rtw_netif_rx(pmgnt_netdev, skb);
precv_frame->u.hdr.pkt = NULL; /* set pointer to NULL before rtw_free_recvframe() if call rtw_netif_rx() */
}
#endif /* CONFIG_HOSTAPD_MLME */
#ifdef CONFIG_WIFI_MONITOR
/*
precv_frame: impossible to be NULL
precv_frame: free by caller
*/
int rtw_recv_monitor(_adapter *padapter, union recv_frame *precv_frame)
{
int ret = _FAIL;
_pkt *skb;
skb = precv_frame->u.hdr.pkt;
if (skb == NULL) {
RTW_INFO("%s :skb==NULL something wrong!!!!\n", __func__);
goto _recv_drop;
}
skb->data = precv_frame->u.hdr.rx_data;
skb_set_tail_pointer(skb, precv_frame->u.hdr.len);
skb->len = precv_frame->u.hdr.len;
skb->ip_summed = CHECKSUM_NONE;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(0x0019); /* ETH_P_80211_RAW */
/* send to kernel */
rtw_netif_rx(padapter->pnetdev, skb);
/* pointers to NULL before rtw_free_recvframe() */
precv_frame->u.hdr.pkt = NULL;
ret = _SUCCESS;
_recv_drop:
return ret;
}
#endif /* CONFIG_WIFI_MONITOR */
inline void rtw_rframe_set_os_pkt(union recv_frame *rframe)
{
_pkt *skb = rframe->u.hdr.pkt;
skb->data = rframe->u.hdr.rx_data;
skb_set_tail_pointer(skb, rframe->u.hdr.len);
skb->len = rframe->u.hdr.len;
}
int rtw_recv_indicatepkt(_adapter *padapter, union recv_frame *precv_frame)
{
struct recv_priv *precvpriv;
_queue *pfree_recv_queue;
precvpriv = &(padapter->recvpriv);
pfree_recv_queue = &(precvpriv->free_recv_queue);
if (precv_frame->u.hdr.pkt == NULL)
goto _recv_indicatepkt_drop;
rtw_os_recv_indicate_pkt(padapter, precv_frame->u.hdr.pkt, precv_frame);
precv_frame->u.hdr.pkt = NULL;
rtw_free_recvframe(precv_frame, pfree_recv_queue);
return _SUCCESS;
_recv_indicatepkt_drop:
rtw_free_recvframe(precv_frame, pfree_recv_queue);
DBG_COUNTER(padapter->rx_logs.os_indicate_err);
return _FAIL;
}
void rtw_os_read_port(_adapter *padapter, struct recv_buf *precvbuf)
{
#ifdef CONFIG_USB_HCI
struct recv_priv *precvpriv = &padapter->recvpriv;
precvbuf->ref_cnt--;
/* free skb in recv_buf */
rtw_skb_free(precvbuf->pskb);
precvbuf->pskb = NULL;
if (precvbuf->irp_pending == _FALSE)
rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
#endif
#if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
precvbuf->pskb = NULL;
#endif
}