// SPDX-License-Identifier: GPL-2.0
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/******************************************************************************
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*
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* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
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*
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******************************************************************************/
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#define _RECV_OSDEP_C_
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#include <drv_types.h>
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#include <rtw_debug.h>
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#include <linux/jiffies.h>
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#include <net/cfg80211.h>
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#include <asm/unaligned.h>
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void rtw_os_free_recvframe(union recv_frame *precvframe)
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{
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if (precvframe->u.hdr.pkt) {
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dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */
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precvframe->u.hdr.pkt = NULL;
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}
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}
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/* alloc os related resource in union recv_frame */
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void rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe)
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{
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precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
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}
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/* free os related resource in union recv_frame */
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void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
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{
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sint i;
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union recv_frame *precvframe;
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precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
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for (i = 0; i < NR_RECVFRAME; i++) {
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if (precvframe->u.hdr.pkt) {
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/* free skb by driver */
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dev_kfree_skb_any(precvframe->u.hdr.pkt);
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precvframe->u.hdr.pkt = NULL;
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}
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precvframe++;
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}
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}
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/* free os related resource in struct recv_buf */
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void rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf)
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{
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if (precvbuf->pskb) {
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dev_kfree_skb_any(precvbuf->pskb);
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}
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}
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_pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata)
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{
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u16 eth_type;
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_pkt *sub_skb;
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struct rx_pkt_attrib *pattrib;
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pattrib = &prframe->u.hdr.attrib;
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sub_skb = rtw_skb_alloc(nSubframe_Length + 12);
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if (!sub_skb) {
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DBG_871X("%s(): rtw_skb_alloc() Fail!!!\n", __func__);
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return NULL;
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}
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skb_reserve(sub_skb, 12);
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skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length);
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eth_type = get_unaligned_be16(&sub_skb->data[6]);
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if (sub_skb->len >= 8 &&
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((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) &&
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eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
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!memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) {
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/*
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* remove RFC1042 or Bridge-Tunnel encapsulation and replace
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* EtherType
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*/
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skb_pull(sub_skb, SNAP_SIZE);
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memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
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memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
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} else {
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__be16 len;
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/* Leave Ethernet header part of hdr and full payload */
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len = htons(sub_skb->len);
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memcpy(skb_push(sub_skb, 2), &len, 2);
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memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
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memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
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}
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return sub_skb;
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}
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void rtw_os_recv_indicate_pkt(struct adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib)
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{
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struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
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int ret;
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/* Indicate the packets to upper layer */
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if (pkt) {
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if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
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_pkt *pskb2 = NULL;
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struct sta_info *psta = NULL;
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struct sta_priv *pstapriv = &padapter->stapriv;
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int bmcast = IS_MCAST(pattrib->dst);
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if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) {
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if (bmcast) {
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psta = rtw_get_bcmc_stainfo(padapter);
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pskb2 = skb_clone(pkt, GFP_ATOMIC);
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} else {
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psta = rtw_get_stainfo(pstapriv, pattrib->dst);
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}
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if (psta) {
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struct net_device *pnetdev = (struct net_device*)padapter->pnetdev;
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/* skb->ip_summed = CHECKSUM_NONE; */
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pkt->dev = pnetdev;
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skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt));
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_rtw_xmit_entry(pkt, pnetdev);
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if (bmcast && (pskb2 != NULL)) {
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pkt = pskb2;
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DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast);
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} else {
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DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward);
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return;
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}
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}
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} else {
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/* to APself */
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/* DBG_871X("to APSelf\n"); */
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DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self);
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}
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}
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pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
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pkt->dev = padapter->pnetdev;
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#ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
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if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1))
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pkt->ip_summed = CHECKSUM_UNNECESSARY;
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else
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pkt->ip_summed = CHECKSUM_NONE;
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#else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */
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pkt->ip_summed = CHECKSUM_NONE;
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#endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */
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ret = rtw_netif_rx(padapter->pnetdev, pkt);
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if (ret == NET_RX_SUCCESS)
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DBG_COUNTER(padapter->rx_logs.os_netif_ok);
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else
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DBG_COUNTER(padapter->rx_logs.os_netif_err);
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}
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}
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void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
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{
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enum nl80211_key_type key_type = 0;
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union iwreq_data wrqu;
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struct iw_michaelmicfailure ev;
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struct mlme_priv* pmlmepriv = &padapter->mlmepriv;
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struct security_priv *psecuritypriv = &padapter->securitypriv;
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unsigned long cur_time = 0;
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if (psecuritypriv->last_mic_err_time == 0) {
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psecuritypriv->last_mic_err_time = jiffies;
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} else {
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cur_time = jiffies;
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if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) {
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psecuritypriv->btkip_countermeasure = true;
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psecuritypriv->last_mic_err_time = 0;
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psecuritypriv->btkip_countermeasure_time = cur_time;
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} else {
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psecuritypriv->last_mic_err_time = jiffies;
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}
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}
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if (bgroup) {
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key_type |= NL80211_KEYTYPE_GROUP;
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} else {
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key_type |= NL80211_KEYTYPE_PAIRWISE;
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}
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cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[0], key_type, -1,
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NULL, GFP_ATOMIC);
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memset(&ev, 0x00, sizeof(ev));
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if (bgroup) {
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ev.flags |= IW_MICFAILURE_GROUP;
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} else {
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ev.flags |= IW_MICFAILURE_PAIRWISE;
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}
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ev.src_addr.sa_family = ARPHRD_ETHER;
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memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
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memset(&wrqu, 0x00, sizeof(wrqu));
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wrqu.data.length = sizeof(ev);
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}
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#ifdef CONFIG_AUTO_AP_MODE
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static void rtw_os_ksocket_send(struct adapter *padapter, union recv_frame *precv_frame)
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{
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_pkt *skb = precv_frame->u.hdr.pkt;
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struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
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struct sta_info *psta = precv_frame->u.hdr.psta;
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DBG_871X("eth rx: got eth_type = 0x%x\n", pattrib->eth_type);
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if (psta && psta->isrc && psta->pid > 0) {
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u16 rx_pid;
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rx_pid = *(u16*)(skb->data+ETH_HLEN);
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DBG_871X("eth rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
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rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
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if (rx_pid == psta->pid) {
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int i;
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u16 len = *(u16 *)(skb->data+ETH_HLEN+2);
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DBG_871X("eth, RC: len = 0x%x\n", len);
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for (i = 0; i < len; i++)
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DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i));
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DBG_871X("eth, RC-end\n");
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}
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}
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}
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#endif /* CONFIG_AUTO_AP_MODE */
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int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame)
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{
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struct recv_priv *precvpriv;
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struct __queue *pfree_recv_queue;
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_pkt *skb;
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struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
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DBG_COUNTER(padapter->rx_logs.os_indicate);
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precvpriv = &(padapter->recvpriv);
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pfree_recv_queue = &(precvpriv->free_recv_queue);
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skb = precv_frame->u.hdr.pkt;
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if (skb == NULL) {
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RT_TRACE(_module_recv_osdep_c_, _drv_err_, ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
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goto _recv_indicatepkt_drop;
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}
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RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
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RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():precv_frame->u.hdr.rx_head =%p precv_frame->hdr.rx_data =%p\n", precv_frame->u.hdr.rx_head, precv_frame->u.hdr.rx_data));
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RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("precv_frame->hdr.rx_tail =%p precv_frame->u.hdr.rx_end =%p precv_frame->hdr.len =%d\n", precv_frame->u.hdr.rx_tail, precv_frame->u.hdr.rx_end, precv_frame->u.hdr.len));
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skb->data = precv_frame->u.hdr.rx_data;
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skb_set_tail_pointer(skb, precv_frame->u.hdr.len);
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skb->len = precv_frame->u.hdr.len;
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RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n", skb->head, skb->data, skb_tail_pointer(skb), skb_end_pointer(skb), skb->len));
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#ifdef CONFIG_AUTO_AP_MODE
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if (0x8899 == pattrib->eth_type) {
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rtw_os_ksocket_send(padapter, precv_frame);
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/* goto _recv_indicatepkt_drop; */
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}
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#endif /* CONFIG_AUTO_AP_MODE */
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rtw_os_recv_indicate_pkt(padapter, skb, pattrib);
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/* pointers to NULL before rtw_free_recvframe() */
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precv_frame->u.hdr.pkt = NULL;
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rtw_free_recvframe(precv_frame, pfree_recv_queue);
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RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n"));
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return _SUCCESS;
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_recv_indicatepkt_drop:
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/* enqueue back to free_recv_queue */
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rtw_free_recvframe(precv_frame, pfree_recv_queue);
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DBG_COUNTER(padapter->rx_logs.os_indicate_err);
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return _FAIL;
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}
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void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
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{
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timer_setup(&preorder_ctrl->reordering_ctrl_timer,
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rtw_reordering_ctrl_timeout_handler, 0);
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}
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