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
|
/*
* Copyright 2013-2014 Intel Corporation - All Rights Reserved
*/
#include "efi.h"
#include "net.h"
#include "fs/pxe/pxe.h"
extern EFI_GUID Tcp4ServiceBindingProtocol;
extern EFI_GUID Tcp4Protocol;
extern struct efi_binding *efi_create_binding(EFI_GUID *, EFI_GUID *);
extern void efi_destroy_binding(struct efi_binding *, EFI_GUID *);
int core_tcp_open(struct pxe_pvt_inode *socket)
{
struct efi_binding *b;
b = efi_create_binding(&Tcp4ServiceBindingProtocol, &Tcp4Protocol);
if (!b)
return -1;
socket->net.efi.binding = b;
return 0;
}
static EFIAPI void null_cb(EFI_EVENT ev, void *context)
{
EFI_TCP4_COMPLETION_TOKEN *token = context;
(void)ev;
uefi_call_wrapper(BS->CloseEvent, 1, token->Event);
}
static int volatile cb_status = -1;
static EFIAPI void tcp_cb(EFI_EVENT ev, void *context)
{
EFI_TCP4_COMPLETION_TOKEN *token = context;
(void)ev;
if (token->Status == EFI_SUCCESS)
cb_status = 0;
else
cb_status = 1;
}
int core_tcp_connect(struct pxe_pvt_inode *socket, uint32_t ip, uint16_t port)
{
EFI_TCP4_CONNECTION_TOKEN token;
EFI_TCP4_ACCESS_POINT *ap;
EFI_TCP4_CONFIG_DATA tdata;
struct efi_binding *b = socket->net.efi.binding;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
int rv = -1;
int unmapped = 1;
jiffies_t start, last, cur;
memset(&tdata, 0, sizeof(tdata));
ap = &tdata.AccessPoint;
ap->UseDefaultAddress = TRUE;
memcpy(&ap->RemoteAddress, &ip, sizeof(ip));
ap->RemotePort = port;
ap->ActiveFlag = TRUE; /* Initiate active open */
tdata.TimeToLive = 64;
last = start = jiffies();
while (unmapped){
status = uefi_call_wrapper(tcp->Configure, 2, tcp, &tdata);
if (status != EFI_NO_MAPPING)
unmapped = 0;
else {
cur = jiffies();
if ( (cur - last) >= EFI_NOMAP_PRINT_DELAY ) {
last = cur;
Print(L"core_tcp_connect: stalling on configure with no mapping\n");
} else if ( (cur - start) > EFI_NOMAP_PRINT_DELAY * EFI_NOMAP_PRINT_COUNT) {
Print(L"core_tcp_connect: aborting on no mapping\n");
unmapped = 0;
}
}
}
if (status != EFI_SUCCESS)
return -1;
status = efi_setup_event(&token.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &token.CompletionToken);
if (status != EFI_SUCCESS)
return -1;
status = uefi_call_wrapper(tcp->Connect, 2, tcp, &token);
if (status != EFI_SUCCESS) {
Print(L"Failed to connect: %d\n", status);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
if (cb_status == 0)
rv = 0;
/* Reset */
cb_status = -1;
out:
uefi_call_wrapper(BS->CloseEvent, 1, token.CompletionToken.Event);
return rv;
}
bool core_tcp_is_connected(struct pxe_pvt_inode *socket)
{
if (socket->net.efi.binding)
return true;
return false;
}
int core_tcp_write(struct pxe_pvt_inode *socket, const void *data,
size_t len, bool copy)
{
EFI_TCP4_TRANSMIT_DATA txdata;
EFI_TCP4_FRAGMENT_DATA *frag;
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_IO_TOKEN iotoken;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
int rv = -1;
(void)copy;
memset(&iotoken, 0, sizeof(iotoken));
memset(&txdata, 0, sizeof(txdata));
txdata.DataLength = len;
txdata.FragmentCount = 1;
frag = &txdata.FragmentTable[0];
frag->FragmentLength = len;
frag->FragmentBuffer = (void *)data;
iotoken.Packet.TxData = &txdata;
status = efi_setup_event(&iotoken.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &iotoken.CompletionToken);
if (status != EFI_SUCCESS)
return -1;
status = uefi_call_wrapper(tcp->Transmit, 2, tcp, &iotoken);
if (status != EFI_SUCCESS) {
Print(L"tcp transmit failed, %d\n", status);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
if (cb_status == 0)
rv = 0;
/* Reset */
cb_status = -1;
out:
uefi_call_wrapper(BS->CloseEvent, 1, iotoken.CompletionToken.Event);
return rv;
}
void core_tcp_close_file(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_CLOSE_TOKEN token;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
if (!socket->tftp_goteof) {
memset(&token, 0, sizeof(token));
status = efi_setup_event(&token.CompletionToken.Event,
(EFI_EVENT_NOTIFY)null_cb,
&token.CompletionToken);
if (status != EFI_SUCCESS)
return;
status = uefi_call_wrapper(tcp->Close, 2, tcp, &token);
if (status != EFI_SUCCESS)
Print(L"tcp close failed: %d\n", status);
}
efi_destroy_binding(b, &Tcp4ServiceBindingProtocol);
socket->net.efi.binding = NULL;
}
static char databuf[8192];
void core_tcp_fill_buffer(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_IO_TOKEN iotoken;
EFI_TCP4_RECEIVE_DATA rxdata;
EFI_TCP4_FRAGMENT_DATA *frag;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
void *data;
size_t len;
memset(&iotoken, 0, sizeof(iotoken));
memset(&rxdata, 0, sizeof(rxdata));
status = efi_setup_event(&iotoken.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &iotoken.CompletionToken);
if (status != EFI_SUCCESS)
return;
iotoken.Packet.RxData = &rxdata;
rxdata.FragmentCount = 1;
rxdata.DataLength = sizeof(databuf);
frag = &rxdata.FragmentTable[0];
frag->FragmentBuffer = databuf;
frag->FragmentLength = sizeof(databuf);
status = uefi_call_wrapper(tcp->Receive, 2, tcp, &iotoken);
if (status == EFI_CONNECTION_FIN) {
socket->tftp_goteof = 1;
if (inode->size == (uint64_t)-1)
inode->size = socket->tftp_filepos;
socket->ops->close(inode);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
/* Reset */
cb_status = -1;
len = frag->FragmentLength;
memcpy(databuf, frag->FragmentBuffer, len);
data = databuf;
socket->tftp_dataptr = data;
socket->tftp_filepos += len;
socket->tftp_bytesleft = len;
out:
uefi_call_wrapper(BS->CloseEvent, 1, iotoken.CompletionToken.Event);
}
|
