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12 | ;; GNU GENERAL PUBLIC LICENSE ;; |
12 | ;; GNU GENERAL PUBLIC LICENSE ;; |
13 | ;; Version 2, June 1991 ;; |
13 | ;; Version 2, June 1991 ;; |
14 | ;; ;; |
14 | ;; ;; |
15 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
15 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
Line 16... | Line 16... | ||
16 | 16 | ||
Line 17... | Line 17... | ||
17 | $Revision: 5363 $ |
17 | $Revision: 5522 $ |
18 | 18 | ||
Line 19... | Line 19... | ||
19 | ETH_FRAME_MINIMUM = 60 |
19 | ETH_FRAME_MINIMUM = 60 |
Line 31... | Line 31... | ||
31 | 31 | ||
Line 32... | Line 32... | ||
32 | mac dp ? |
32 | mac dp ? |
Line 33... | Line -... | ||
33 | - | ||
34 | ends |
- | |
35 | - | ||
36 | struct ETH_queue_entry |
- | |
37 | - | ||
38 | device dd ? |
- | |
39 | packet dd ? |
- | |
40 | size dd ? |
- | |
41 | 33 | ||
42 | ends |
34 | ends |
Line 43... | Line 35... | ||
43 | 35 | ||
- | 36 | iglobal |
|
- | 37 | align 4 |
|
- | 38 | ||
- | 39 | ETH_BROADCAST dp 0xffffffffffff |
|
- | 40 | ||
- | 41 | ETH_frame_queued dd 0 ; Number of queued frames |
|
44 | iglobal |
42 | |
Line 45... | Line 43... | ||
45 | align 4 |
43 | ETH_frame_head dd ETH_frame_head ; Pointer to next frame in the linked list |
46 | 44 | ETH_frame_tail dd ETH_frame_head ; Pointer to last frame in the linked list |
|
47 | ETH_BROADCAST dp 0xffffffffffff |
45 | |
48 | endg |
- | |
49 | 46 | endg |
|
Line 50... | Line 47... | ||
50 | uglobal |
47 | |
Line 51... | Line -... | ||
51 | align 4 |
- | |
52 | ETH_input_event dd ? |
- | |
53 | ETH_queue rd (ETH_QUEUE_SIZE*sizeof.ETH_queue_entry + sizeof.queue)/4 |
48 | uglobal |
54 | endg |
49 | align 4 |
55 | 50 | ETH_input_event dd ? |
|
56 | macro ETH_init { |
51 | endg |
57 | 52 | ||
Line 70... | Line 65... | ||
70 | ;----------------------------------------------------------------- |
65 | ;----------------------------------------------------------------- |
71 | ; |
66 | ; |
72 | ; ETH_input |
67 | ; ETH_input |
73 | ; |
68 | ; |
74 | ; This function is called by ethernet drivers, |
69 | ; This function is called by ethernet drivers, |
75 | ; It pushes the received ethernet packets onto the eth_in_queue |
70 | ; It pushes the received ethernet packets onto the ethernet input queue |
76 | ; |
71 | ; |
77 | ; IN: [esp] = Pointer to buffer |
72 | ; IN: [esp] = Pointer to buffer |
78 | ; [esp+4] = size of buffer |
- | |
79 | ; ebx = pointer to eth_device |
- | |
- | 73 | ; |
|
80 | ; OUT: / |
74 | ; OUT: / |
81 | ; |
75 | ; |
82 | ;----------------------------------------------------------------- |
76 | ;----------------------------------------------------------------- |
83 | align 4 |
77 | align 4 |
84 | ETH_input: |
78 | ETH_input: |
Line 85... | Line 79... | ||
85 | 79 | ||
- | 80 | pop eax |
|
- | 81 | pushf |
|
- | 82 | cli |
|
- | 83 | ||
86 | push ebx |
84 | cmp [ETH_frame_queued], ETH_QUEUE_SIZE |
- | 85 | jae .full |
|
- | 86 | inc [ETH_frame_queued] |
|
- | 87 | ||
- | 88 | ; Add frame to the end of the linked list |
|
Line 87... | Line 89... | ||
87 | mov esi, esp |
89 | mov [eax + NET_BUFF.NextPtr], ETH_frame_head |
88 | 90 | ||
Line -... | Line 91... | ||
- | 91 | mov ebx, [ETH_frame_tail] |
|
- | 92 | mov [eax + NET_BUFF.PrevPtr], ebx |
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- | 93 | ||
- | 94 | mov [ETH_frame_tail], eax |
|
- | 95 | mov [ebx + NET_BUFF.NextPtr], eax |
|
- | 96 | ||
89 | add_to_queue ETH_queue, ETH_QUEUE_SIZE, sizeof.ETH_queue_entry, .fail |
97 | popf |
90 | add esp, sizeof.ETH_queue_entry |
98 | |
91 | 99 | ; Now queue an event to process it |
|
92 | xor edx, edx |
100 | xor edx, edx |
93 | mov eax, [ETH_input_event] |
101 | mov eax, [ETH_input_event] |
Line 94... | Line 102... | ||
94 | mov ebx, [eax + EVENT.id] |
102 | mov ebx, [eax + EVENT.id] |
Line 95... | Line 103... | ||
95 | xor esi, esi |
103 | xor esi, esi |
96 | call raise_event |
104 | call raise_event |
97 | - | ||
98 | ret |
105 | |
99 | 106 | ret |
|
100 | .fail: |
107 | |
101 | DEBUGF DEBUG_NETWORK_ERROR, "ETH incoming queue is full, discarding packet!\n" |
- | |
102 | 108 | .full: |
|
Line 114... | Line 120... | ||
114 | 120 | ||
115 | xor esi, esi |
121 | xor esi, esi |
116 | mov ecx, MANUAL_DESTROY |
122 | mov ecx, MANUAL_DESTROY |
117 | call create_event |
123 | call create_event |
118 | mov [ETH_input_event], eax |
124 | mov [ETH_input_event], eax |
119 | 125 | pushf |
|
- | 126 | .wait: |
|
120 | .wait: |
127 | popf |
121 | mov eax, [ETH_input_event] |
128 | mov eax, [ETH_input_event] |
122 | mov ebx, [eax + EVENT.id] |
129 | mov ebx, [eax + EVENT.id] |
Line 123... | Line 130... | ||
123 | call wait_event |
130 | call wait_event |
- | 131 | ||
- | 132 | .loop: |
|
124 | 133 | pushf |
|
- | 134 | cli |
|
- | 135 | cmp [ETH_frame_queued], 0 |
|
- | 136 | je .wait |
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Line 125... | Line 137... | ||
125 | .loop: |
137 | |
126 | get_from_queue ETH_queue, ETH_QUEUE_SIZE, sizeof.ETH_queue_entry, .wait |
138 | dec [ETH_frame_queued] |
127 | - | ||
Line 128... | Line 139... | ||
128 | mov eax, [esi + ETH_queue_entry.packet] |
139 | |
- | 140 | mov esi, [ETH_frame_head] |
|
- | 141 | mov ebx, [esi + NET_BUFF.NextPtr] |
|
- | 142 | ||
- | 143 | mov [ETH_frame_head], ebx |
|
- | 144 | mov [ebx + NET_BUFF.PrevPtr], ETH_frame_head |
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129 | mov ecx, [esi + ETH_queue_entry.size] |
145 | |
- | 146 | popf |
|
- | 147 | ||
- | 148 | mov eax, [esi + NET_BUFF.offset] |
|
- | 149 | add eax, esi |
|
- | 150 | mov ecx, [esi + NET_BUFF.length] |
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Line 130... | Line 151... | ||
130 | mov ebx, [esi + ETH_queue_entry.device] |
151 | mov ebx, [esi + NET_BUFF.device] |
131 | 152 | ||
132 | pushd .loop ; return address |
153 | pushd .loop ; return address for protocol handler |
Line -... | Line 154... | ||
- | 154 | push esi ; keep pointer to NET_BUFF on stack |
|
133 | push ecx eax |
155 | |
134 | 156 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: size=%u\n", ecx |
|
Line -... | Line 157... | ||
- | 157 | sub ecx, sizeof.ETH_header |
|
135 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: size=%u\n", ecx |
158 | jb .dump |
136 | sub ecx, sizeof.ETH_header |
159 | |
Line 137... | Line 160... | ||
137 | jb .dump |
160 | ; Set registers for protocol handlers |
138 | 161 | lea edx, [eax + sizeof.ETH_header] |
|
Line 156... | Line 179... | ||
156 | 179 | ||
Line 157... | Line 180... | ||
157 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: Unknown packet type=%x\n", ax |
180 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: Unknown packet type=%x\n", ax |
158 | 181 | ||
159 | .dump: |
182 | .dump: |
160 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: dumping\n" |
- | |
161 | call NET_packet_free |
183 | DEBUGF DEBUG_NETWORK_VERBOSE, "ETH_input: dumping\n" |
Line 162... | Line 184... | ||
162 | add esp, 4 |
184 | call NET_BUFF_free |
163 | ret |
185 | ret |
164 | 186 | ||
Line 169... | Line 191... | ||
169 | ; IN: ax = protocol |
191 | ; IN: ax = protocol |
170 | ; ebx = device ptr |
192 | ; ebx = device ptr |
171 | ; ecx = payload size |
193 | ; ecx = payload size |
172 | ; edx = pointer to destination mac |
194 | ; edx = pointer to destination mac |
173 | ; |
195 | ; |
174 | ; OUT: eax = start of ethernet frame / 0 on error |
196 | ; OUT: eax = start of net frame / 0 on error |
175 | ; ebx = device ptr |
197 | ; ebx = device ptr |
176 | ; ecx = payload size |
198 | ; ecx = payload size |
177 | ; edx = ethernet frame size |
- | |
178 | ; edi = start of ethernet payload |
199 | ; edi = start of payload |
179 | ; |
200 | ; |
180 | ;----------------------------------------------------------------- |
201 | ;----------------------------------------------------------------- |
181 | align 4 |
202 | align 4 |
182 | ETH_output: |
203 | ETH_output: |
Line 187... | Line 208... | ||
187 | ja .exit |
208 | ja .exit |
Line 188... | Line 209... | ||
188 | 209 | ||
189 | push ecx |
210 | push ecx |
Line 190... | Line 211... | ||
190 | push ax edx |
211 | push ax edx |
191 | 212 | ||
192 | add ecx, sizeof.ETH_header |
213 | add ecx, sizeof.ETH_header + NET_BUFF.data |
193 | stdcall kernel_alloc, ecx |
214 | stdcall NET_BUFF_alloc, ecx |
- | 215 | test eax, eax |
|
194 | test eax, eax |
216 | jz .out_of_ram |
- | 217 | mov [eax + NET_BUFF.type], NET_BUFF_ETH |
|
- | 218 | mov [eax + NET_BUFF.device], ebx |
|
Line 195... | Line 219... | ||
195 | jz .out_of_ram |
219 | mov [eax + NET_BUFF.offset], NET_BUFF.data |
196 | mov edi, eax |
220 | lea edi, [eax + NET_BUFF.data] |
197 | 221 | ||
198 | pop esi |
222 | pop esi |
199 | movsd |
223 | movsd |
200 | movsw |
224 | movsw |
201 | lea esi, [ebx + ETH_DEVICE.mac] |
225 | lea esi, [ebx + ETH_DEVICE.mac] |
202 | movsd |
226 | movsd |
Line 203... | Line 227... | ||
203 | movsw |
227 | movsw |
204 | pop ax |
228 | pop ax |
205 | stosw |
- | |
Line -... | Line 229... | ||
- | 229 | stosw |
|
206 | 230 | ||
207 | lea eax, [edi - sizeof.ETH_header] ; Set eax to buffer start |
231 | lea eax, [edi - sizeof.ETH_header - NET_BUFF.data] ; Set eax to buffer start |
208 | pop ecx |
232 | pop ecx |
- | 233 | ||
209 | lea edx, [ecx + sizeof.ETH_header] ; Set edx to complete buffer size |
234 | lea edx, [ecx + sizeof.ETH_header] ; Set edx to complete buffer size |
210 | 235 | cmp edx, ETH_FRAME_MINIMUM |
|
Line 211... | Line 236... | ||
211 | cmp edx, ETH_FRAME_MINIMUM |
236 | jbe .adjust_size |
212 | jbe .adjust_size |
237 | .done: |
Line 270... | Line 295... | ||
270 | 295 | ||
271 | 296 | ||
272 | .read_mac: |
297 | .read_mac: |
273 | movzx ebx, word [eax + ETH_DEVICE.mac] |
298 | movzx ebx, word [eax + ETH_DEVICE.mac] |
274 | mov eax, dword [eax + ETH_DEVICE.mac + 2] |
299 | mov eax, dword [eax + ETH_DEVICE.mac + 2] |