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
|
/** @file
Copyright (c) 2005 - 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
Ip4If.h
Abstract:
Definition for IP4 pesudo interface structure.
**/
#ifndef __EFI_IP4_IF_H__
#define __EFI_IP4_IF_H__
enum {
IP4_FRAME_RX_SIGNATURE = EFI_SIGNATURE_32 ('I', 'P', 'F', 'R'),
IP4_FRAME_TX_SIGNATURE = EFI_SIGNATURE_32 ('I', 'P', 'F', 'T'),
IP4_FRAME_ARP_SIGNATURE = EFI_SIGNATURE_32 ('I', 'P', 'F', 'A'),
IP4_INTERFACE_SIGNATURE = EFI_SIGNATURE_32 ('I', 'P', 'I', 'F')
};
//
// This prototype is used by both receive and transmission.
// When receiving Netbuf is allocated by IP4_INTERFACE, and
// released by IP4. Flag shows whether the frame is received
// as link broadcast/multicast...
//
// When transmitting, the Netbuf is from IP4, and provided
// to the callback as a reference. Flag isn't used.
//
// IpInstance can be NULL which means that it is the IP4 driver
// itself sending the packets. IP4 driver may send packets that
// don't belong to any instance, such as ICMP errors, ICMP echo
// responses, or IGMP packets. IpInstance is used as a tag in
// this module.
//
typedef
VOID
(*IP4_FRAME_CALLBACK) (
IP4_PROTOCOL *IpInstance, OPTIONAL
NET_BUF *Packet,
EFI_STATUS IoStatus,
UINT32 LinkFlag,
VOID *Context
);
//
// Each receive request is wrapped in an IP4_LINK_RX_TOKEN.
// Upon completion, the Callback will be called. Only one
// receive request is send to MNP. IpInstance is always NULL.
// Reference MNP's spec for information.
//
typedef struct {
UINT32 Signature;
IP4_INTERFACE *Interface;
IP4_PROTOCOL *IpInstance;
IP4_FRAME_CALLBACK CallBack;
VOID *Context;
EFI_MANAGED_NETWORK_COMPLETION_TOKEN MnpToken;
} IP4_LINK_RX_TOKEN;
//
// Each transmit request is wrapped in an IP4_LINK_TX_TOKEN.
// Upon completion, the Callback will be called.
//
typedef struct {
UINT32 Signature;
NET_LIST_ENTRY Link;
IP4_INTERFACE *Interface;
IP4_PROTOCOL *IpInstance;
IP4_FRAME_CALLBACK CallBack;
NET_BUF *Packet;
VOID *Context;
EFI_MAC_ADDRESS DstMac;
EFI_MAC_ADDRESS SrcMac;
EFI_MANAGED_NETWORK_COMPLETION_TOKEN MnpToken;
EFI_MANAGED_NETWORK_TRANSMIT_DATA MnpTxData;
} IP4_LINK_TX_TOKEN;
//
// Only one ARP request is requested for all the frames in
// a time. It is started for the first frames to the Ip. Any
// subsequent transmission frame will be linked to Frames, and
// be sent all at once the ARP requests succeed.
//
typedef struct {
UINT32 Signature;
NET_LIST_ENTRY Link;
NET_LIST_ENTRY Frames;
IP4_INTERFACE *Interface;
//
// ARP requesting staffs
//
EFI_EVENT OnResolved;
IP4_ADDR Ip;
EFI_MAC_ADDRESS Mac;
} IP4_ARP_QUE;
//
// Callback to select which frame to cancel. Caller can cancel a
// single frame, or all the frame from an IP instance.
//
typedef
BOOLEAN
(*IP4_FRAME_TO_CANCEL) (
IP4_LINK_TX_TOKEN *Frame,
VOID *Context
);
//
// Each IP4 instance has its own station address. All the instances
// with the same station address share a single interface structure.
// Each interface has its own ARP child, and shares one MNP child.
// Notice the special cases that DHCP can configure the interface
// with 0.0.0.0/0.0.0.0.
//
struct _IP4_INTERFACE {
UINT32 Signature;
NET_LIST_ENTRY Link;
INTN RefCnt;
//
// IP address and subnet mask of the interface. It also contains
// the subnet/net broadcast address for quick access. The fileds
// are invalid if (Configured == FALSE)
//
IP4_ADDR Ip;
IP4_ADDR SubnetMask;
IP4_ADDR SubnetBrdcast;
IP4_ADDR NetBrdcast;
BOOLEAN Configured;
//
// Handle used to create/destory ARP child. All the IP children
// share one MNP which is owned by IP service binding.
//
EFI_HANDLE Controller;
EFI_HANDLE Image;
EFI_MANAGED_NETWORK_PROTOCOL *Mnp;
EFI_ARP_PROTOCOL *Arp;
EFI_HANDLE ArpHandle;
//
// Queues to keep the frames sent and waiting ARP request.
//
NET_LIST_ENTRY ArpQues;
NET_LIST_ENTRY SentFrames;
IP4_LINK_RX_TOKEN *RecvRequest;
//
// The interface's MAC and broadcast MAC address.
//
EFI_MAC_ADDRESS Mac;
EFI_MAC_ADDRESS BroadcastMac;
UINT32 HwaddrLen;
//
// All the IP instances that have the same IP/SubnetMask are linked
// together through IpInstances. If any of the instance enables
// promiscuous receive, PromiscRecv is true.
//
NET_LIST_ENTRY IpInstances;
BOOLEAN PromiscRecv;
};
IP4_INTERFACE *
Ip4CreateInterface (
IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,
IN EFI_HANDLE Controller,
IN EFI_HANDLE ImageHandle
);
EFI_STATUS
Ip4SetAddress (
IN IP4_INTERFACE *Interface,
IN IP4_ADDR IpAddr,
IN IP4_ADDR SubnetMask
);
EFI_STATUS
Ip4FreeInterface (
IN IP4_INTERFACE *Interface,
IN IP4_PROTOCOL *IpInstance OPTIONAL
);
EFI_STATUS
Ip4SendFrame (
IN IP4_INTERFACE *Interface,
IN IP4_PROTOCOL *IpInstance, OPTIONAL
IN NET_BUF *Packet,
IN IP4_ADDR NextHop,
IN IP4_FRAME_CALLBACK CallBack,
IN VOID *Context
);
VOID
Ip4CancelFrames (
IN IP4_INTERFACE *Interface,
IN EFI_STATUS IoStatus,
IN IP4_FRAME_TO_CANCEL FrameToCancel, OPTIONAL
IN VOID *Context
);
VOID
Ip4CancelReceive (
IN IP4_INTERFACE *Interface
);
EFI_STATUS
Ip4ReceiveFrame (
IN IP4_INTERFACE *Interface,
IN IP4_PROTOCOL *IpInstance, OPTIONAL
IN IP4_FRAME_CALLBACK CallBack,
IN VOID *Context
);
#endif
|
