summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/ixp/npe/IxEthDBFirewall.c
blob: eb46174b6c5a6188286bbe5c82a29b99cbd034b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
/**
 * @file IxEthDBFirewall.c
 *
 * @brief Implementation of the firewall API
 * 
 * @par
 * IXP400 SW Release version 2.0
 * 
 * -- Copyright Notice --
 * 
 * @par
 * Copyright 2001-2005, Intel Corporation.
 * All rights reserved.
 * 
 * @par
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * @par
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * @par
 * -- End of Copyright Notice --
 */


#include "IxEthDB_p.h"

/**
 * @brief updates the NPE firewall operating mode and 
 * firewall address table
 *
 * @param portID ID of the port
 * @param epDelta initial entry point for binary searches (NPE optimization)
 * @param address address of the firewall MAC address table
 *
 * This function will send a message to the NPE configuring the
 * firewall mode (white list or black list), invalid source 
 * address filtering and downloading a new MAC address database 
 * to be used for firewall matching.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed 
 * successfully or IX_ETH_DB_FAIL otherwise
 *
 * @internal
 */
IX_ETH_DB_PUBLIC
IxEthDBStatus ixEthDBFirewallUpdate(IxEthDBPortId portID, void *address, UINT32 epDelta)
{
    IxNpeMhMessage message;
    IX_STATUS result;
    
    UINT32 mode        = 0;    
    PortInfo *portInfo = &ixEthDBPortInfo[portID];

    mode = (portInfo->srcAddressFilterEnabled != FALSE) << 1 | (portInfo->firewallMode == IX_ETH_DB_FIREWALL_WHITE_LIST);

    FILL_SETFIREWALLMODE_MSG(message, 
        IX_ETH_DB_PORT_ID_TO_NPE_LOGICAL_ID(portID), 
        epDelta, 
        mode, 
        IX_OSAL_MMU_VIRT_TO_PHYS(address));

    IX_ETHDB_SEND_NPE_MSG(IX_ETH_DB_PORT_ID_TO_NPE(portID), message, result);
    
    return result;
}

/**
 * @brief configures the firewall white list/black list
 * access mode
 *
 * @param portID ID of the port
 * @param mode firewall filtering mode (IX_ETH_DB_FIREWALL_WHITE_LIST
 * or IX_ETH_DB_FIREWALL_BLACK_LIST)
 *
 * Note that this function is documented in the main component
 * header file, IxEthDB.h.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed
 * successfully or an appropriate error message otherwise
 */
IX_ETH_DB_PUBLIC 
IxEthDBStatus ixEthDBFirewallModeSet(IxEthDBPortId portID, IxEthDBFirewallMode mode)
{
    IX_ETH_DB_CHECK_PORT(portID);
    
    IX_ETH_DB_CHECK_SINGLE_NPE(portID);
     
    IX_ETH_DB_CHECK_FEATURE(portID, IX_ETH_DB_FIREWALL);
    
    if (mode != IX_ETH_DB_FIREWALL_WHITE_LIST
        && mode != IX_ETH_DB_FIREWALL_BLACK_LIST)
    {
        return IX_ETH_DB_INVALID_ARG;
    }    
    
    ixEthDBPortInfo[portID].firewallMode = mode;
    
    return ixEthDBFirewallTableDownload(portID);
}

/**
 * @brief enables or disables the invalid source MAC address filter
 *
 * @param portID ID of the port
 * @param enable TRUE to enable invalid source MAC address filtering
 * or FALSE to disable it
 *
 * The invalid source MAC address filter will discard, when enabled,
 * frames whose source MAC address is a multicast or the broadcast MAC
 * address.
 *
 * Note that this function is documented in the main component
 * header file, IxEthDB.h.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed 
 * successfully or an appropriate error message otherwise
 */
IX_ETH_DB_PUBLIC 
IxEthDBStatus ixEthDBFirewallInvalidAddressFilterEnable(IxEthDBPortId portID, BOOL enable)
{
    IX_ETH_DB_CHECK_PORT(portID);
    
    IX_ETH_DB_CHECK_SINGLE_NPE(portID);
    
    IX_ETH_DB_CHECK_FEATURE(portID, IX_ETH_DB_FIREWALL);

    ixEthDBPortInfo[portID].srcAddressFilterEnabled = enable;
    
    return ixEthDBFirewallTableDownload(portID);
}

/**
 * @brief adds a firewall record
 *
 * @param portID ID of the port
 * @param macAddr MAC address of the new record
 *
 * This function will add a new firewall record
 * on the specified port, using the specified 
 * MAC address. If the record already exists this
 * function will silently return IX_ETH_DB_SUCCESS,
 * although no duplicate records are added.
 *
 * Note that this function is documented in the main
 * component header file, IxEthDB.h.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed
 * successfully or an appropriate error message otherwise
 */
IX_ETH_DB_PUBLIC 
IxEthDBStatus ixEthDBFirewallEntryAdd(IxEthDBPortId portID, IxEthDBMacAddr *macAddr)
{
    MacDescriptor recordTemplate;

    IX_ETH_DB_CHECK_PORT(portID);

    IX_ETH_DB_CHECK_SINGLE_NPE(portID);

    IX_ETH_DB_CHECK_REFERENCE(macAddr);

    IX_ETH_DB_CHECK_FEATURE(portID, IX_ETH_DB_FIREWALL);
    
    memcpy(recordTemplate.macAddress, macAddr, sizeof (IxEthDBMacAddr));
    
    recordTemplate.type   = IX_ETH_DB_FIREWALL_RECORD;
    recordTemplate.portID = portID;
    
    return ixEthDBAdd(&recordTemplate, NULL);
}

/**
 * @brief removes a firewall record
 *
 * @param portID ID of the port
 * @param macAddr MAC address of the record to remove
 *
 * This function will attempt to remove a firewall
 * record from the given port, using the specified
 * MAC address.
 *
 * Note that this function is documented in the main
 * component header file, IxEthDB.h.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed
 * successfully of an appropriate error message otherwise
 */
IX_ETH_DB_PUBLIC 
IxEthDBStatus ixEthDBFirewallEntryRemove(IxEthDBPortId portID, IxEthDBMacAddr *macAddr)
{
    MacDescriptor recordTemplate;
    
    IX_ETH_DB_CHECK_PORT(portID);

    IX_ETH_DB_CHECK_SINGLE_NPE(portID);

    IX_ETH_DB_CHECK_REFERENCE(macAddr);

    IX_ETH_DB_CHECK_FEATURE(portID, IX_ETH_DB_FIREWALL);
    
    memcpy(recordTemplate.macAddress, macAddr, sizeof (IxEthDBMacAddr));
    
    recordTemplate.type   = IX_ETH_DB_FIREWALL_RECORD;
    recordTemplate.portID = portID;
    
    return ixEthDBRemove(&recordTemplate, NULL);
}

/**
 * @brief downloads the firewall address table to an NPE
 *
 * @param portID ID of the port
 *
 * This function will download the firewall address table to
 * an NPE port.
 *
 * Note that this function is documented in the main 
 * component header file, IxEthDB.h.
 *
 * @return IX_ETH_DB_SUCCESS if the operation completed
 * successfully or IX_ETH_DB_FAIL otherwise
 */
IX_ETH_DB_PUBLIC 
IxEthDBStatus ixEthDBFirewallTableDownload(IxEthDBPortId portID)
{
    IxEthDBPortMap query;
    IxEthDBStatus result;
    
    IX_ETH_DB_CHECK_PORT(portID);

    IX_ETH_DB_CHECK_SINGLE_NPE(portID);

    IX_ETH_DB_CHECK_FEATURE(portID, IX_ETH_DB_FIREWALL);
    
    SET_DEPENDENCY_MAP(query, portID);

    ixEthDBUpdateLock();
    
    ixEthDBPortInfo[portID].updateMethod.searchTree = ixEthDBQuery(NULL, query, IX_ETH_DB_FIREWALL_RECORD, MAX_FW_SIZE);
    
    result = ixEthDBNPEUpdateHandler(portID, IX_ETH_DB_FIREWALL_RECORD);

    ixEthDBUpdateUnlock();

    return result;
}