// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
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*
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* Contact Information: wlanfae <wlanfae@realtek.com>
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*/
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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#include <linux/etherdevice.h>
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#include "rtllib.h"
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#include "rtl819x_BA.h"
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static void ActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA,
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u16 Time)
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{
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pBA->bValid = true;
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if (Time != 0)
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mod_timer(&pBA->Timer, jiffies + msecs_to_jiffies(Time));
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}
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static void DeActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA)
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{
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pBA->bValid = false;
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del_timer_sync(&pBA->Timer);
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}
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static u8 TxTsDeleteBA(struct rtllib_device *ieee, struct tx_ts_record *pTxTs)
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{
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struct ba_record *pAdmittedBa = &pTxTs->TxAdmittedBARecord;
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struct ba_record *pPendingBa = &pTxTs->TxPendingBARecord;
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u8 bSendDELBA = false;
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if (pPendingBa->bValid) {
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DeActivateBAEntry(ieee, pPendingBa);
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bSendDELBA = true;
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}
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if (pAdmittedBa->bValid) {
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DeActivateBAEntry(ieee, pAdmittedBa);
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bSendDELBA = true;
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}
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return bSendDELBA;
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}
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static u8 RxTsDeleteBA(struct rtllib_device *ieee, struct rx_ts_record *pRxTs)
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{
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struct ba_record *pBa = &pRxTs->RxAdmittedBARecord;
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u8 bSendDELBA = false;
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if (pBa->bValid) {
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DeActivateBAEntry(ieee, pBa);
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bSendDELBA = true;
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}
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return bSendDELBA;
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}
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void ResetBaEntry(struct ba_record *pBA)
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{
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pBA->bValid = false;
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pBA->BaParamSet.shortData = 0;
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pBA->BaTimeoutValue = 0;
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pBA->DialogToken = 0;
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pBA->BaStartSeqCtrl.ShortData = 0;
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}
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static struct sk_buff *rtllib_ADDBA(struct rtllib_device *ieee, u8 *Dst,
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struct ba_record *pBA,
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u16 StatusCode, u8 type)
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{
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struct sk_buff *skb = NULL;
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struct rtllib_hdr_3addr *BAReq = NULL;
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u8 *tag = NULL;
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u16 len = ieee->tx_headroom + 9;
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netdev_dbg(ieee->dev, "%s(): frame(%d) sentd to: %pM, ieee->dev:%p\n",
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__func__, type, Dst, ieee->dev);
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if (!pBA) {
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netdev_warn(ieee->dev, "pBA is NULL\n");
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return NULL;
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}
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skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
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if (!skb)
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return NULL;
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memset(skb->data, 0, sizeof(struct rtllib_hdr_3addr));
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skb_reserve(skb, ieee->tx_headroom);
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BAReq = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
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ether_addr_copy(BAReq->addr1, Dst);
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ether_addr_copy(BAReq->addr2, ieee->dev->dev_addr);
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ether_addr_copy(BAReq->addr3, ieee->current_network.bssid);
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BAReq->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
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tag = skb_put(skb, 9);
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*tag++ = ACT_CAT_BA;
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*tag++ = type;
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*tag++ = pBA->DialogToken;
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if (type == ACT_ADDBARSP) {
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RT_TRACE(COMP_DBG, "====>to send ADDBARSP\n");
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put_unaligned_le16(StatusCode, tag);
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tag += 2;
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}
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put_unaligned_le16(pBA->BaParamSet.shortData, tag);
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tag += 2;
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put_unaligned_le16(pBA->BaTimeoutValue, tag);
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tag += 2;
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if (type == ACT_ADDBAREQ) {
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memcpy(tag, (u8 *)&(pBA->BaStartSeqCtrl), 2);
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tag += 2;
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}
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#ifdef VERBOSE_DEBUG
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print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
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__func__, skb->len);
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#endif
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return skb;
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}
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static struct sk_buff *rtllib_DELBA(struct rtllib_device *ieee, u8 *dst,
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struct ba_record *pBA,
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enum tr_select TxRxSelect, u16 ReasonCode)
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{
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union delba_param_set DelbaParamSet;
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struct sk_buff *skb = NULL;
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struct rtllib_hdr_3addr *Delba = NULL;
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u8 *tag = NULL;
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u16 len = 6 + ieee->tx_headroom;
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if (net_ratelimit())
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netdev_dbg(ieee->dev, "%s(): ReasonCode(%d) sentd to: %pM\n",
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__func__, ReasonCode, dst);
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memset(&DelbaParamSet, 0, 2);
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DelbaParamSet.field.Initiator = (TxRxSelect == TX_DIR) ? 1 : 0;
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DelbaParamSet.field.TID = pBA->BaParamSet.field.TID;
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skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
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if (!skb)
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return NULL;
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skb_reserve(skb, ieee->tx_headroom);
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Delba = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
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ether_addr_copy(Delba->addr1, dst);
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ether_addr_copy(Delba->addr2, ieee->dev->dev_addr);
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ether_addr_copy(Delba->addr3, ieee->current_network.bssid);
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Delba->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
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tag = skb_put(skb, 6);
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*tag++ = ACT_CAT_BA;
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*tag++ = ACT_DELBA;
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put_unaligned_le16(DelbaParamSet.shortData, tag);
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tag += 2;
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put_unaligned_le16(ReasonCode, tag);
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tag += 2;
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#ifdef VERBOSE_DEBUG
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print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
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__func__, skb->len);
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#endif
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return skb;
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}
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static void rtllib_send_ADDBAReq(struct rtllib_device *ieee, u8 *dst,
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struct ba_record *pBA)
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{
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struct sk_buff *skb;
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skb = rtllib_ADDBA(ieee, dst, pBA, 0, ACT_ADDBAREQ);
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if (skb) {
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RT_TRACE(COMP_DBG, "====>to send ADDBAREQ!!!!!\n");
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softmac_mgmt_xmit(skb, ieee);
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} else {
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netdev_dbg(ieee->dev, "Failed to generate ADDBAReq packet.\n");
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}
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}
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static void rtllib_send_ADDBARsp(struct rtllib_device *ieee, u8 *dst,
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struct ba_record *pBA, u16 StatusCode)
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{
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struct sk_buff *skb;
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skb = rtllib_ADDBA(ieee, dst, pBA, StatusCode, ACT_ADDBARSP);
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if (skb)
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softmac_mgmt_xmit(skb, ieee);
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else
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netdev_dbg(ieee->dev, "Failed to generate ADDBARsp packet.\n");
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}
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static void rtllib_send_DELBA(struct rtllib_device *ieee, u8 *dst,
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struct ba_record *pBA, enum tr_select TxRxSelect,
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u16 ReasonCode)
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{
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struct sk_buff *skb;
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skb = rtllib_DELBA(ieee, dst, pBA, TxRxSelect, ReasonCode);
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if (skb)
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softmac_mgmt_xmit(skb, ieee);
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else
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netdev_dbg(ieee->dev, "Failed to generate DELBA packet.\n");
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}
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int rtllib_rx_ADDBAReq(struct rtllib_device *ieee, struct sk_buff *skb)
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{
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struct rtllib_hdr_3addr *req = NULL;
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u16 rc = 0;
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u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
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struct ba_record *pBA = NULL;
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union ba_param_set *pBaParamSet = NULL;
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u16 *pBaTimeoutVal = NULL;
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union sequence_control *pBaStartSeqCtrl = NULL;
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struct rx_ts_record *pTS = NULL;
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if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
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netdev_warn(ieee->dev, "Invalid skb len in BAREQ(%d / %d)\n",
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(int)skb->len,
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(int)(sizeof(struct rtllib_hdr_3addr) + 9));
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return -1;
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}
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#ifdef VERBOSE_DEBUG
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print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, __func__,
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skb->data, skb->len);
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#endif
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req = (struct rtllib_hdr_3addr *) skb->data;
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tag = (u8 *)req;
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dst = (u8 *)(&req->addr2[0]);
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tag += sizeof(struct rtllib_hdr_3addr);
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pDialogToken = tag + 2;
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pBaParamSet = (union ba_param_set *)(tag + 3);
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pBaTimeoutVal = (u16 *)(tag + 5);
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pBaStartSeqCtrl = (union sequence_control *)(req + 7);
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RT_TRACE(COMP_DBG, "====>rx ADDBAREQ from : %pM\n", dst);
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if (!ieee->current_network.qos_data.active ||
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!ieee->pHTInfo->bCurrentHTSupport ||
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(ieee->pHTInfo->IOTAction & HT_IOT_ACT_REJECT_ADDBA_REQ)) {
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rc = ADDBA_STATUS_REFUSED;
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netdev_warn(ieee->dev,
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"Failed to reply on ADDBA_REQ as some capability is not ready(%d, %d)\n",
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ieee->current_network.qos_data.active,
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ieee->pHTInfo->bCurrentHTSupport);
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goto OnADDBAReq_Fail;
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}
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if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
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(u8)(pBaParamSet->field.TID), RX_DIR, true)) {
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rc = ADDBA_STATUS_REFUSED;
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netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
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goto OnADDBAReq_Fail;
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}
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pBA = &pTS->RxAdmittedBARecord;
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if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
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rc = ADDBA_STATUS_INVALID_PARAM;
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netdev_warn(ieee->dev, "%s(): BA Policy is not correct\n",
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__func__);
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goto OnADDBAReq_Fail;
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}
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rtllib_FlushRxTsPendingPkts(ieee, pTS);
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DeActivateBAEntry(ieee, pBA);
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pBA->DialogToken = *pDialogToken;
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pBA->BaParamSet = *pBaParamSet;
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pBA->BaTimeoutValue = *pBaTimeoutVal;
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pBA->BaStartSeqCtrl = *pBaStartSeqCtrl;
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if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev) ||
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(ieee->pHTInfo->IOTAction & HT_IOT_ACT_ALLOW_PEER_AGG_ONE_PKT))
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pBA->BaParamSet.field.BufferSize = 1;
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else
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pBA->BaParamSet.field.BufferSize = 32;
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ActivateBAEntry(ieee, pBA, 0);
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rtllib_send_ADDBARsp(ieee, dst, pBA, ADDBA_STATUS_SUCCESS);
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return 0;
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OnADDBAReq_Fail:
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{
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struct ba_record BA;
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BA.BaParamSet = *pBaParamSet;
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BA.BaTimeoutValue = *pBaTimeoutVal;
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BA.DialogToken = *pDialogToken;
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BA.BaParamSet.field.BAPolicy = BA_POLICY_IMMEDIATE;
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rtllib_send_ADDBARsp(ieee, dst, &BA, rc);
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return 0;
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}
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}
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int rtllib_rx_ADDBARsp(struct rtllib_device *ieee, struct sk_buff *skb)
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{
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struct rtllib_hdr_3addr *rsp = NULL;
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struct ba_record *pPendingBA, *pAdmittedBA;
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struct tx_ts_record *pTS = NULL;
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u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
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u16 *pStatusCode = NULL, *pBaTimeoutVal = NULL;
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union ba_param_set *pBaParamSet = NULL;
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u16 ReasonCode;
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if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
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netdev_warn(ieee->dev, "Invalid skb len in BARSP(%d / %d)\n",
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(int)skb->len,
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(int)(sizeof(struct rtllib_hdr_3addr) + 9));
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return -1;
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}
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rsp = (struct rtllib_hdr_3addr *)skb->data;
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tag = (u8 *)rsp;
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dst = (u8 *)(&rsp->addr2[0]);
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tag += sizeof(struct rtllib_hdr_3addr);
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pDialogToken = tag + 2;
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pStatusCode = (u16 *)(tag + 3);
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pBaParamSet = (union ba_param_set *)(tag + 5);
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pBaTimeoutVal = (u16 *)(tag + 7);
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RT_TRACE(COMP_DBG, "====>rx ADDBARSP from : %pM\n", dst);
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if (!ieee->current_network.qos_data.active ||
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!ieee->pHTInfo->bCurrentHTSupport ||
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!ieee->pHTInfo->bCurrentAMPDUEnable) {
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netdev_warn(ieee->dev,
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"reject to ADDBA_RSP as some capability is not ready(%d, %d, %d)\n",
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ieee->current_network.qos_data.active,
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ieee->pHTInfo->bCurrentHTSupport,
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ieee->pHTInfo->bCurrentAMPDUEnable);
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ReasonCode = DELBA_REASON_UNKNOWN_BA;
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goto OnADDBARsp_Reject;
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}
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|
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if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
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(u8)(pBaParamSet->field.TID), TX_DIR, false)) {
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netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
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ReasonCode = DELBA_REASON_UNKNOWN_BA;
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goto OnADDBARsp_Reject;
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}
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pTS->bAddBaReqInProgress = false;
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pPendingBA = &pTS->TxPendingBARecord;
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pAdmittedBA = &pTS->TxAdmittedBARecord;
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|
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if (pAdmittedBA->bValid) {
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netdev_dbg(ieee->dev, "%s(): ADDBA response already admitted\n",
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__func__);
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return -1;
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} else if (!pPendingBA->bValid ||
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(*pDialogToken != pPendingBA->DialogToken)) {
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netdev_warn(ieee->dev,
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"%s(): ADDBA Rsp. BA invalid, DELBA!\n",
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__func__);
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ReasonCode = DELBA_REASON_UNKNOWN_BA;
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goto OnADDBARsp_Reject;
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} else {
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netdev_dbg(ieee->dev,
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"%s(): Recv ADDBA Rsp. BA is admitted! Status code:%X\n",
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__func__, *pStatusCode);
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DeActivateBAEntry(ieee, pPendingBA);
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}
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|
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if (*pStatusCode == ADDBA_STATUS_SUCCESS) {
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if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
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pTS->bAddBaReqDelayed = true;
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DeActivateBAEntry(ieee, pAdmittedBA);
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ReasonCode = DELBA_REASON_END_BA;
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goto OnADDBARsp_Reject;
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}
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pAdmittedBA->DialogToken = *pDialogToken;
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pAdmittedBA->BaTimeoutValue = *pBaTimeoutVal;
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pAdmittedBA->BaStartSeqCtrl = pPendingBA->BaStartSeqCtrl;
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pAdmittedBA->BaParamSet = *pBaParamSet;
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DeActivateBAEntry(ieee, pAdmittedBA);
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ActivateBAEntry(ieee, pAdmittedBA, *pBaTimeoutVal);
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} else {
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pTS->bAddBaReqDelayed = true;
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pTS->bDisable_AddBa = true;
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ReasonCode = DELBA_REASON_END_BA;
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goto OnADDBARsp_Reject;
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}
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return 0;
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OnADDBARsp_Reject:
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{
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struct ba_record BA;
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BA.BaParamSet = *pBaParamSet;
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rtllib_send_DELBA(ieee, dst, &BA, TX_DIR, ReasonCode);
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return 0;
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}
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}
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int rtllib_rx_DELBA(struct rtllib_device *ieee, struct sk_buff *skb)
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{
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struct rtllib_hdr_3addr *delba = NULL;
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union delba_param_set *pDelBaParamSet = NULL;
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u8 *dst = NULL;
|
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if (skb->len < sizeof(struct rtllib_hdr_3addr) + 6) {
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netdev_warn(ieee->dev, "Invalid skb len in DELBA(%d / %d)\n",
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(int)skb->len,
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(int)(sizeof(struct rtllib_hdr_3addr) + 6));
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return -1;
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}
|
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if (!ieee->current_network.qos_data.active ||
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!ieee->pHTInfo->bCurrentHTSupport) {
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netdev_warn(ieee->dev,
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"received DELBA while QOS or HT is not supported(%d, %d)\n",
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ieee->current_network. qos_data.active,
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ieee->pHTInfo->bCurrentHTSupport);
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return -1;
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}
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#ifdef VERBOSE_DEBUG
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print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
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__func__, skb->len);
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#endif
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delba = (struct rtllib_hdr_3addr *)skb->data;
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dst = (u8 *)(&delba->addr2[0]);
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pDelBaParamSet = (union delba_param_set *)&delba->payload[2];
|
|
if (pDelBaParamSet->field.Initiator == 1) {
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struct rx_ts_record *pRxTs;
|
|
if (!GetTs(ieee, (struct ts_common_info **)&pRxTs, dst,
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(u8)pDelBaParamSet->field.TID, RX_DIR, false)) {
|
netdev_warn(ieee->dev,
|
"%s(): can't get TS for RXTS. dst:%pM TID:%d\n",
|
__func__, dst,
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(u8)pDelBaParamSet->field.TID);
|
return -1;
|
}
|
|
RxTsDeleteBA(ieee, pRxTs);
|
} else {
|
struct tx_ts_record *pTxTs;
|
|
if (!GetTs(ieee, (struct ts_common_info **)&pTxTs, dst,
|
(u8)pDelBaParamSet->field.TID, TX_DIR, false)) {
|
netdev_warn(ieee->dev, "%s(): can't get TS for TXTS\n",
|
__func__);
|
return -1;
|
}
|
|
pTxTs->bUsingBa = false;
|
pTxTs->bAddBaReqInProgress = false;
|
pTxTs->bAddBaReqDelayed = false;
|
del_timer_sync(&pTxTs->TsAddBaTimer);
|
TxTsDeleteBA(ieee, pTxTs);
|
}
|
return 0;
|
}
|
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void TsInitAddBA(struct rtllib_device *ieee, struct tx_ts_record *pTS,
|
u8 Policy, u8 bOverwritePending)
|
{
|
struct ba_record *pBA = &pTS->TxPendingBARecord;
|
|
if (pBA->bValid && !bOverwritePending)
|
return;
|
|
DeActivateBAEntry(ieee, pBA);
|
|
pBA->DialogToken++;
|
pBA->BaParamSet.field.AMSDU_Support = 0;
|
pBA->BaParamSet.field.BAPolicy = Policy;
|
pBA->BaParamSet.field.TID =
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pTS->TsCommonInfo.TSpec.f.TSInfo.field.ucTSID;
|
pBA->BaParamSet.field.BufferSize = 32;
|
pBA->BaTimeoutValue = 0;
|
pBA->BaStartSeqCtrl.field.SeqNum = (pTS->TxCurSeq + 3) % 4096;
|
|
ActivateBAEntry(ieee, pBA, BA_SETUP_TIMEOUT);
|
|
rtllib_send_ADDBAReq(ieee, pTS->TsCommonInfo.Addr, pBA);
|
}
|
|
void TsInitDelBA(struct rtllib_device *ieee,
|
struct ts_common_info *pTsCommonInfo,
|
enum tr_select TxRxSelect)
|
{
|
if (TxRxSelect == TX_DIR) {
|
struct tx_ts_record *pTxTs =
|
(struct tx_ts_record *)pTsCommonInfo;
|
|
if (TxTsDeleteBA(ieee, pTxTs))
|
rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
|
(pTxTs->TxAdmittedBARecord.bValid) ?
|
(&pTxTs->TxAdmittedBARecord) :
|
(&pTxTs->TxPendingBARecord),
|
TxRxSelect, DELBA_REASON_END_BA);
|
} else if (TxRxSelect == RX_DIR) {
|
struct rx_ts_record *pRxTs =
|
(struct rx_ts_record *)pTsCommonInfo;
|
if (RxTsDeleteBA(ieee, pRxTs))
|
rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
|
&pRxTs->RxAdmittedBARecord,
|
TxRxSelect, DELBA_REASON_END_BA);
|
}
|
}
|
|
void BaSetupTimeOut(struct timer_list *t)
|
{
|
struct tx_ts_record *pTxTs = from_timer(pTxTs, t,
|
TxPendingBARecord.Timer);
|
|
pTxTs->bAddBaReqInProgress = false;
|
pTxTs->bAddBaReqDelayed = true;
|
pTxTs->TxPendingBARecord.bValid = false;
|
}
|
|
void TxBaInactTimeout(struct timer_list *t)
|
{
|
struct tx_ts_record *pTxTs = from_timer(pTxTs, t,
|
TxAdmittedBARecord.Timer);
|
struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
|
TxTsRecord[pTxTs->num]);
|
TxTsDeleteBA(ieee, pTxTs);
|
rtllib_send_DELBA(ieee, pTxTs->TsCommonInfo.Addr,
|
&pTxTs->TxAdmittedBARecord, TX_DIR,
|
DELBA_REASON_TIMEOUT);
|
}
|
|
void RxBaInactTimeout(struct timer_list *t)
|
{
|
struct rx_ts_record *pRxTs = from_timer(pRxTs, t,
|
RxAdmittedBARecord.Timer);
|
struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
|
RxTsRecord[pRxTs->num]);
|
|
RxTsDeleteBA(ieee, pRxTs);
|
rtllib_send_DELBA(ieee, pRxTs->TsCommonInfo.Addr,
|
&pRxTs->RxAdmittedBARecord, RX_DIR,
|
DELBA_REASON_TIMEOUT);
|
}
|
