tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1/*
2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * File: wroute.c
20 *
21 * Purpose: handle WMAC frame relay & filtering
22 *
23 * Author: Lyndon Chen
24 *
25 * Date: May 20, 2003
26 *
27 * Functions:
28 * ROUTEbRelay - Relay packet
29 *
30 * Revision History:
31 *
32 */
33
34#include "mac.h"
35#include "tcrc.h"
36#include "rxtx.h"
37#include "wroute.h"
38#include "card.h"
39#include "baseband.h"
40
41/*--------------------- Static Definitions -------------------------*/
42
43/*--------------------- Static Classes ----------------------------*/
44
45/*--------------------- Static Variables --------------------------*/
46static int msglevel = MSG_LEVEL_INFO;
47//static int msglevel =MSG_LEVEL_DEBUG;
48/*--------------------- Static Functions --------------------------*/
49
50/*--------------------- Export Variables --------------------------*/
51
52/*
53 * Description:
54 * Relay packet. Return true if packet is copy to DMA1
55 *
56 * Parameters:
57 * In:
58 * pDevice -
59 * pbySkbData - rx packet skb data
60 * Out:
61 * true, false
62 *
63 * Return Value: true if packet duplicate; otherwise false
64 *
65 */
66bool ROUTEbRelay(PSDevice pDevice, unsigned char *pbySkbData,
67 unsigned int uDataLen, unsigned int uNodeIndex)
68{
69 PSMgmtObject pMgmt = pDevice->pMgmt;
70 PSTxDesc pHeadTD, pLastTD;
71 unsigned int cbFrameBodySize;
72 unsigned int uMACfragNum;
73 unsigned char byPktType;
74 bool bNeedEncryption = false;
75 SKeyItem STempKey;
76 PSKeyItem pTransmitKey = NULL;
77 unsigned int cbHeaderSize;
78 unsigned int ii;
79 unsigned char *pbyBSSID;
80
81 if (AVAIL_TD(pDevice, TYPE_AC0DMA) <= 0) {
82 DBG_PRT(MSG_LEVEL_DEBUG,
83 KERN_INFO "Relay can't allocate TD1..\n");
84 return false;
85 }
86
87 pHeadTD = pDevice->apCurrTD[TYPE_AC0DMA];
88
89 pHeadTD->m_td1TD1.byTCR = (TCR_EDP | TCR_STP);
90
91 memcpy(pDevice->sTxEthHeader.abyDstAddr, pbySkbData, ETH_HLEN);
92
93 cbFrameBodySize = uDataLen - ETH_HLEN;
94
95 if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN)
96 cbFrameBodySize += 8;
97
98 if (pDevice->bEncryptionEnable == true) {
99 bNeedEncryption = true;
100
101 // get group key
102 pbyBSSID = pDevice->abyBroadcastAddr;
103 if (KeybGetTransmitKey(&(pDevice->sKey), pbyBSSID,
104 GROUP_KEY, &pTransmitKey) == false) {
105 pTransmitKey = NULL;
106 DBG_PRT(MSG_LEVEL_DEBUG,
107 KERN_DEBUG "KEY is NULL. [%d]\n",
108 pDevice->pMgmt->eCurrMode);
109 } else {
110 DBG_PRT(MSG_LEVEL_DEBUG, KERN_DEBUG "Get GTK.\n");
111 }
112 }
113
114 if (pDevice->bEnableHostWEP) {
115 if (uNodeIndex < MAX_NODE_NUM + 1) {
116 pTransmitKey = &STempKey;
117 pTransmitKey->byCipherSuite = pMgmt->sNodeDBTable[uNodeIndex].byCipherSuite;
118 pTransmitKey->dwKeyIndex = pMgmt->sNodeDBTable[uNodeIndex].dwKeyIndex;
119 pTransmitKey->uKeyLength = pMgmt->sNodeDBTable[uNodeIndex].uWepKeyLength;
120 pTransmitKey->dwTSC47_16 = pMgmt->sNodeDBTable[uNodeIndex].dwTSC47_16;
121 pTransmitKey->wTSC15_0 = pMgmt->sNodeDBTable[uNodeIndex].wTSC15_0;
122 memcpy(pTransmitKey->abyKey,
123 &pMgmt->sNodeDBTable[uNodeIndex].abyWepKey[0],
124 pTransmitKey->uKeyLength);
125 }
126 }
127
128 uMACfragNum = cbGetFragCount(pDevice, pTransmitKey,
129 cbFrameBodySize, &pDevice->sTxEthHeader);
130
131 if (uMACfragNum > AVAIL_TD(pDevice, TYPE_AC0DMA))
132 return false;
133
134 byPktType = pDevice->byPacketType;
135
136 if (pDevice->bFixRate) {
137 if (pDevice->eCurrentPHYType == PHY_TYPE_11B) {
138 if (pDevice->uConnectionRate >= RATE_11M)
139 pDevice->wCurrentRate = RATE_11M;
140 else
141 pDevice->wCurrentRate = pDevice->uConnectionRate;
142 } else {
143 if ((pDevice->eCurrentPHYType == PHY_TYPE_11A) &&
144 (pDevice->uConnectionRate <= RATE_6M)) {
145 pDevice->wCurrentRate = RATE_6M;
146 } else {
147 if (pDevice->uConnectionRate >= RATE_54M)
148 pDevice->wCurrentRate = RATE_54M;
149 else
150 pDevice->wCurrentRate = pDevice->uConnectionRate;
151 }
152 }
153 } else {
154 pDevice->wCurrentRate = pDevice->pMgmt->sNodeDBTable[uNodeIndex].wTxDataRate;
155 }
156
157 if (pDevice->wCurrentRate <= RATE_11M)
158 byPktType = PK_TYPE_11B;
159
160 vGenerateFIFOHeader(pDevice, byPktType, pDevice->pbyTmpBuff,
161 bNeedEncryption, cbFrameBodySize, TYPE_AC0DMA,
162 pHeadTD, &pDevice->sTxEthHeader, pbySkbData,
163 pTransmitKey, uNodeIndex, &uMACfragNum,
164 &cbHeaderSize);
165
166 if (MACbIsRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PS)) {
167 // Disable PS
168 MACbPSWakeup(pDevice->PortOffset);
169 }
170
171 pDevice->bPWBitOn = false;
172
173 pLastTD = pHeadTD;
174 for (ii = 0; ii < uMACfragNum; ii++) {
175 // Poll Transmit the adapter
176 wmb();
177 pHeadTD->m_td0TD0.f1Owner = OWNED_BY_NIC;
178 wmb();
179 if (ii == (uMACfragNum - 1))
180 pLastTD = pHeadTD;
181 pHeadTD = pHeadTD->next;
182 }
183
184 pLastTD->pTDInfo->skb = NULL;
185 pLastTD->pTDInfo->byFlags = 0;
186
187 pDevice->apCurrTD[TYPE_AC0DMA] = pHeadTD;
188
189 MACvTransmitAC0(pDevice->PortOffset);
190
191 return true;
192}