// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
******************************************************************************/
#include <drv_types.h>
#include <linux/jiffies.h>
#include <net/cfg80211.h>
#include <linux/unaligned.h>
void rtw_os_free_recvframe(union recv_frame *precvframe)
{
if (precvframe->u.hdr.pkt) {
dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */
precvframe->u.hdr.pkt = NULL;
}
}
/* alloc os related resource in union recv_frame */
void rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe)
{
precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
}
/* free os related resource in union recv_frame */
void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
{
signed int i;
union recv_frame *precvframe;
precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
for (i = 0; i < NR_RECVFRAME; i++) {
if (precvframe->u.hdr.pkt) {
/* free skb by driver */
dev_kfree_skb_any(precvframe->u.hdr.pkt);
precvframe->u.hdr.pkt = NULL;
}
precvframe++;
}
}
/* free os related resource in struct recv_buf */
void rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf)
{
if (precvbuf->pskb) {
dev_kfree_skb_any(precvbuf->pskb);
}
}
struct sk_buff *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata)
{
u16 eth_type;
struct sk_buff *sub_skb;
struct rx_pkt_attrib *pattrib;
pattrib = &prframe->u.hdr.attrib;
sub_skb = rtw_skb_alloc(nSubframe_Length + 12);
if (!sub_skb)
return NULL;
skb_reserve(sub_skb, 12);
skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length);
eth_type = get_unaligned_be16(&sub_skb->data[6]);
if (sub_skb->len >= 8 &&
((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) &&
eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
!memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) {
/*
* remove RFC1042 or Bridge-Tunnel encapsulation and replace
* EtherType
*/
skb_pull(sub_skb, SNAP_SIZE);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
} else {
__be16 len;
/* Leave Ethernet header part of hdr and full payload */
len = htons(sub_skb->len);
memcpy(skb_push(sub_skb, 2), &len, 2);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
}
return sub_skb;
}
void rtw_os_recv_indicate_pkt(struct adapter *padapter, struct sk_buff *pkt, struct rx_pkt_attrib *pattrib)
{
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
/* Indicate the packets to upper layer */
if (pkt) {
if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
struct sk_buff *pskb2 = NULL;
struct sta_info *psta = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
int bmcast = is_multicast_ether_addr(pattrib->dst);
if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) {
if (bmcast) {
psta = rtw_get_bcmc_stainfo(padapter);
pskb2 = skb_clone(pkt, GFP_ATOMIC);
} else {
psta = rtw_get_stainfo(pstapriv, pattrib->dst);
}
if (psta) {
struct net_device *pnetdev = (struct net_device *)padapter->pnetdev;
/* skb->ip_summed = CHECKSUM_NONE; */
pkt->dev = pnetdev;
skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt));
_rtw_xmit_entry(pkt, pnetdev);
if (bmcast && pskb2)
pkt = pskb2;
else
return;
}
} else {
/* to APself */
}
}
pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
pkt->dev = padapter->pnetdev;
pkt->ip_summed = CHECKSUM_NONE;
rtw_netif_rx(padapter->pnetdev, pkt);
}
}
void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
{
enum nl80211_key_type key_type = 0;
union iwreq_data wrqu;
struct iw_michaelmicfailure ev;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
struct security_priv *psecuritypriv = &padapter->securitypriv;
unsigned long cur_time = 0;
if (psecuritypriv->last_mic_err_time == 0) {
psecuritypriv->last_mic_err_time = jiffies;
} else {
cur_time = jiffies;
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 = jiffies;
}
}
if (bgroup) {
key_type |= NL80211_KEYTYPE_GROUP;
} else {
key_type |= NL80211_KEYTYPE_PAIRWISE;
}
cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[0], key_type, -1,
NULL, GFP_ATOMIC);
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;
memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
memset(&wrqu, 0x00, sizeof(wrqu));
wrqu.data.length = sizeof(ev);
}
int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame)
{
struct recv_priv *precvpriv;
struct __queue *pfree_recv_queue;
struct sk_buff *skb;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
precvpriv = &(padapter->recvpriv);
pfree_recv_queue = &(precvpriv->free_recv_queue);
skb = precv_frame->u.hdr.pkt;
if (!skb)
goto _recv_indicatepkt_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;
rtw_os_recv_indicate_pkt(padapter, skb, pattrib);
/* pointers to NULL before rtw_free_recvframe() */
precv_frame->u.hdr.pkt = NULL;
rtw_free_recvframe(precv_frame, pfree_recv_queue);
return _SUCCESS;
_recv_indicatepkt_drop:
/* enqueue back to free_recv_queue */
rtw_free_recvframe(precv_frame, pfree_recv_queue);
return _FAIL;
}
void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
{
timer_setup(&preorder_ctrl->reordering_ctrl_timer,
rtw_reordering_ctrl_timeout_handler, 0);
}
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