1 | /* |
---|
2 | * ksocket.c - kernel socket API implementation. |
---|
3 | * |
---|
4 | * Authors Alain Greiner (2016,2017,2018,2019,2020) |
---|
5 | * |
---|
6 | * Copyright (c) UPMC Sorbonne Universites |
---|
7 | * |
---|
8 | * This file is part of ALMOS-MKH. |
---|
9 | * |
---|
10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
---|
11 | * under the terms of the GNU General Public License as published by |
---|
12 | * the Free Software Foundation; version 2.0 of the License. |
---|
13 | * |
---|
14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
---|
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
17 | * General Public License for more details. |
---|
18 | * |
---|
19 | * You should have received a copy of the GNU General Public License |
---|
20 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
---|
21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
---|
22 | */ |
---|
23 | |
---|
24 | #include <kernel_config.h> |
---|
25 | #include <hal_kernel_types.h> |
---|
26 | #include <hal_remote.h> |
---|
27 | #include <hal_uspace.h> |
---|
28 | #include <shared_socket.h> |
---|
29 | #include <process.h> |
---|
30 | #include <remote_buf.h> |
---|
31 | #include <bits.h> |
---|
32 | #include <printk.h> |
---|
33 | #include <kmem.h> |
---|
34 | #include <thread.h> |
---|
35 | #include <vfs.h> |
---|
36 | #include <ksocket.h> |
---|
37 | #include <dev_nic.h> |
---|
38 | |
---|
39 | ////////////////////////////////////////////////////////////////////////////////////// |
---|
40 | // Extern global variables |
---|
41 | ////////////////////////////////////////////////////////////////////////////////////// |
---|
42 | |
---|
43 | extern chdev_directory_t chdev_dir; // allocated in kernel_init.c |
---|
44 | |
---|
45 | /////////////////////////////////////////// |
---|
46 | char * socket_domain_str( uint32_t domain ) |
---|
47 | { |
---|
48 | switch( domain ) |
---|
49 | { |
---|
50 | case AF_INET : return "INET"; |
---|
51 | case AF_LOCAL : return "LOCAL"; |
---|
52 | |
---|
53 | default : return "undefined"; |
---|
54 | } |
---|
55 | } |
---|
56 | |
---|
57 | /////////////////////////////////////// |
---|
58 | char * socket_type_str( uint32_t type ) |
---|
59 | { |
---|
60 | switch( type ) |
---|
61 | { |
---|
62 | case SOCK_DGRAM : return "UDP"; |
---|
63 | case SOCK_STREAM : return "TCP"; |
---|
64 | |
---|
65 | default : return "undefined"; |
---|
66 | } |
---|
67 | } |
---|
68 | |
---|
69 | ///////////////////////////////////////// |
---|
70 | char * socket_state_str( uint32_t state ) |
---|
71 | { |
---|
72 | switch( state ) |
---|
73 | { |
---|
74 | case UDP_STATE_UNBOUND : return "UDP_UNBOUND"; |
---|
75 | case UDP_STATE_BOUND : return "UDP_BOUND"; |
---|
76 | case UDP_STATE_ESTAB : return "UDP_ESTAB"; |
---|
77 | |
---|
78 | case TCP_STATE_UNBOUND : return "TCP_UNBOUND"; |
---|
79 | case TCP_STATE_BOUND : return "TCP_BOUND"; |
---|
80 | case TCP_STATE_LISTEN : return "TCP_LISTEN"; |
---|
81 | case TCP_STATE_SYN_SENT : return "TCP_SYN_SENT"; |
---|
82 | case TCP_STATE_SYN_RCVD : return "TCP_SYN_RCVD"; |
---|
83 | case TCP_STATE_ESTAB : return "TCP_ESTAB"; |
---|
84 | case TCP_STATE_FIN_WAIT1 : return "TCP_FIN_WAIT1"; |
---|
85 | case TCP_STATE_FIN_WAIT2 : return "TCP_FIN_WAIT2"; |
---|
86 | case TCP_STATE_CLOSING : return "TCP_CLOSING"; |
---|
87 | case TCP_STATE_TIME_WAIT : return "TCP_TIME_WAIT"; |
---|
88 | case TCP_STATE_CLOSE_WAIT : return "TCP_CLOSE_WAIT"; |
---|
89 | case TCP_STATE_LAST_ACK : return "TCP_LAST_ACK"; |
---|
90 | case TCP_STATE_CLOSED : return "TCP_CLOSED"; |
---|
91 | |
---|
92 | default : return "undefined"; |
---|
93 | } |
---|
94 | } |
---|
95 | |
---|
96 | /////////////////////////////////////////// |
---|
97 | char * socket_cmd_type_str( uint32_t type ) |
---|
98 | { |
---|
99 | switch( type ) |
---|
100 | { |
---|
101 | case CMD_TX_CONNECT : return "TX_CONNECT"; |
---|
102 | case CMD_TX_ACCEPT : return "TX_ACCEPT"; |
---|
103 | case CMD_TX_CLOSE : return "TX_CLOSE"; |
---|
104 | case CMD_TX_SEND : return "TX_SEND"; |
---|
105 | |
---|
106 | case CMD_RX_ACCEPT : return "RX_ACCEPT"; |
---|
107 | case CMD_RX_RECV : return "RX_RECV"; |
---|
108 | |
---|
109 | default : return "undefined"; |
---|
110 | } |
---|
111 | } |
---|
112 | |
---|
113 | /////////////////////////////////////////// |
---|
114 | char * socket_cmd_sts_str( uint32_t sts ) |
---|
115 | { |
---|
116 | switch( sts ) |
---|
117 | { |
---|
118 | case CMD_STS_SUCCESS : return "TX_CONNECT"; |
---|
119 | case CMD_STS_EOF : return "EOF"; |
---|
120 | case CMD_STS_RST : return "RST"; |
---|
121 | case CMD_STS_BADACK : return "BADACK"; |
---|
122 | case CMD_STS_BADSTATE : return "BADSTATE"; |
---|
123 | case CMD_STS_BADCMD : return "BADCMD"; |
---|
124 | |
---|
125 | default : return "undefined"; |
---|
126 | } |
---|
127 | } |
---|
128 | |
---|
129 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
130 | // This static function registers the socket defined by the <socket_xp> argument into |
---|
131 | // the lists of sockets attached to the relevant NIC_TX and NIC_TX chdevs identified |
---|
132 | // by the <channel> argument, and update the channel field in socket descriptor. |
---|
133 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
134 | // @ socket_xp : [in] extended pointer on socket descriptor. |
---|
135 | // @ channel : [in] NIC channel index. |
---|
136 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
137 | static void socket_link_to_servers( xptr_t socket_xp, |
---|
138 | uint32_t channel ) |
---|
139 | { |
---|
140 | cxy_t socket_cxy = GET_CXY( socket_xp ); |
---|
141 | socket_t * socket_ptr = GET_PTR( socket_xp ); |
---|
142 | |
---|
143 | #if DEBUG_SOCKET_LINK |
---|
144 | thread_t * this = CURRENT_THREAD; |
---|
145 | process_t * process = this->process; |
---|
146 | pid_t socket_pid = hal_remote_l32( XPTR( socket_cxy , &socket_ptr->pid )); |
---|
147 | fdid_t socket_fdid = hal_remote_l32( XPTR( socket_cxy , &socket_ptr->pid )); |
---|
148 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
149 | if( DEBUG_SOCKET_LINK < cycle ) |
---|
150 | printk("\n[%s] thread[%x,%x] enter for socket[%x,%d] / cycle %d\n", |
---|
151 | __FUNCTION__, process->pid, this->trdid, socket_pid, socket_fdid, cycle ); |
---|
152 | #endif |
---|
153 | |
---|
154 | // get pointers on NIC_TX[channel] chdev |
---|
155 | xptr_t tx_chdev_xp = chdev_dir.nic_tx[channel]; |
---|
156 | chdev_t * tx_chdev_ptr = GET_PTR( tx_chdev_xp ); |
---|
157 | cxy_t tx_chdev_cxy = GET_CXY( tx_chdev_xp ); |
---|
158 | |
---|
159 | // build various TX extended pointers |
---|
160 | xptr_t tx_root_xp = XPTR( tx_chdev_cxy , &tx_chdev_ptr->wait_root ); |
---|
161 | xptr_t tx_lock_xp = XPTR( tx_chdev_cxy , &tx_chdev_ptr->wait_lock ); |
---|
162 | xptr_t tx_list_xp = XPTR( socket_cxy , &socket_ptr->tx_list ); |
---|
163 | |
---|
164 | // get pointers on NIC_RX[channel] chdev |
---|
165 | xptr_t rx_chdev_xp = chdev_dir.nic_rx[channel]; |
---|
166 | chdev_t * rx_chdev_ptr = GET_PTR( rx_chdev_xp ); |
---|
167 | cxy_t rx_chdev_cxy = GET_CXY( rx_chdev_xp ); |
---|
168 | |
---|
169 | // build various RX extended pointers |
---|
170 | xptr_t rx_root_xp = XPTR( rx_chdev_cxy , &rx_chdev_ptr->wait_root ); |
---|
171 | xptr_t rx_lock_xp = XPTR( rx_chdev_cxy , &rx_chdev_ptr->wait_lock ); |
---|
172 | xptr_t rx_list_xp = XPTR( socket_cxy , &socket_ptr->rx_list ); |
---|
173 | |
---|
174 | // register socket in the NIC_TX[channel] chdev clients queue |
---|
175 | remote_busylock_acquire( tx_lock_xp ); |
---|
176 | xlist_add_last( tx_root_xp , tx_list_xp ); |
---|
177 | remote_busylock_release( tx_lock_xp ); |
---|
178 | |
---|
179 | // register socket in the NIC_RX[channel] chdev clients queue |
---|
180 | remote_busylock_acquire( rx_lock_xp ); |
---|
181 | xlist_add_last( rx_root_xp , rx_list_xp ); |
---|
182 | remote_busylock_release( rx_lock_xp ); |
---|
183 | |
---|
184 | #if DEBUG_SOCKET_LINK |
---|
185 | cycle = (uint32_t)hal_get_cycles(); |
---|
186 | if( DEBUG_SOCKET_LINK < cycle ) |
---|
187 | printk("\n[%s] thread[%x,%x] linked socket[%x,%d] to channel %d / cycle %d\n", |
---|
188 | __FUNCTION__, process->pid, this->trdid, process->pid, socket_pid, socket_fdid, channel, cycle ); |
---|
189 | #endif |
---|
190 | |
---|
191 | } // end socket_link_to_servers() |
---|
192 | |
---|
193 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
194 | // This function removes the socket defined by the <socket_xp> argument from the |
---|
195 | // lists of sockets attached to the relevant NIC_TX and NIC_TX chdevs. |
---|
196 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
197 | // @ socket_xp : [in] extended pointer on socket descriptor |
---|
198 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
199 | static void socket_unlink_from_servers( xptr_t socket_xp ) |
---|
200 | { |
---|
201 | cxy_t socket_cxy = GET_CXY( socket_xp ); |
---|
202 | socket_t * socket_ptr = GET_PTR( socket_xp ); |
---|
203 | |
---|
204 | #if DEBUG_SOCKET_LINK |
---|
205 | thread_t * this = CURRENT_THREAD; |
---|
206 | process_t * process = this->process; |
---|
207 | pid_t socket_pid = hal_remote_l32( XPTR( socket_cxy , &socket_ptr->pid )); |
---|
208 | fdid_t socket_fdid = hal_remote_l32( XPTR( socket_cxy , &socket_ptr->pid )); |
---|
209 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
210 | if( DEBUG_SOCKET_LINK < cycle ) |
---|
211 | printk("\n[%s] thread[%x,%x] enter for socket[%x,%d] / cycle %d\n", |
---|
212 | __FUNCTION__, process->pid, this->trdid, socket_pid, socket_fdid, cycle ); |
---|
213 | #endif |
---|
214 | |
---|
215 | // get NIC channel |
---|
216 | uint32_t channel = hal_remote_l32( XPTR( socket_cxy , &socket_ptr->nic_channel )); |
---|
217 | |
---|
218 | // get pointers on NIC_TX[channel] chdev |
---|
219 | xptr_t tx_chdev_xp = chdev_dir.nic_tx[channel]; |
---|
220 | chdev_t * tx_chdev_ptr = GET_PTR( tx_chdev_xp ); |
---|
221 | cxy_t tx_chdev_cxy = GET_CXY( tx_chdev_xp ); |
---|
222 | |
---|
223 | // build various TX extended pointers |
---|
224 | xptr_t tx_lock_xp = XPTR( tx_chdev_cxy , &tx_chdev_ptr->wait_lock ); |
---|
225 | xptr_t tx_list_xp = XPTR( socket_cxy , &socket_ptr->tx_list ); |
---|
226 | |
---|
227 | // get pointers on NIC_RX[channel] chdev |
---|
228 | xptr_t rx_chdev_xp = chdev_dir.nic_rx[channel]; |
---|
229 | chdev_t * rx_chdev_ptr = GET_PTR( rx_chdev_xp ); |
---|
230 | cxy_t rx_chdev_cxy = GET_CXY( rx_chdev_xp ); |
---|
231 | |
---|
232 | // build various RX extended pointers |
---|
233 | xptr_t rx_lock_xp = XPTR( rx_chdev_cxy , &rx_chdev_ptr->wait_lock ); |
---|
234 | xptr_t rx_list_xp = XPTR( socket_cxy , &socket_ptr->rx_list ); |
---|
235 | |
---|
236 | // remove socket from the NIC_TX[channel] chdev clients queue |
---|
237 | remote_busylock_acquire( tx_lock_xp ); |
---|
238 | xlist_unlink( tx_list_xp ); |
---|
239 | remote_busylock_release( tx_lock_xp ); |
---|
240 | |
---|
241 | // remove socket from the NIC_RX[channel] chdev clients queue |
---|
242 | remote_busylock_acquire( rx_lock_xp ); |
---|
243 | xlist_unlink( rx_list_xp ); |
---|
244 | remote_busylock_release( rx_lock_xp ); |
---|
245 | |
---|
246 | #if DEBUG_SOCKET_LINK |
---|
247 | cycle = (uint32_t)hal_get_cycles(); |
---|
248 | if( DEBUG_SOCKET_LINK < cycle ) |
---|
249 | printk("\n[%s] thread[%x,%x] unlinked socket [%x,%d] / cycle %d\n", |
---|
250 | __FUNCTION__, process->pid, this->trdid, socket_pid, socket_fdid, cycle ); |
---|
251 | #endif |
---|
252 | |
---|
253 | } // end socket_unlink_from_servers() |
---|
254 | |
---|
255 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
256 | // This static function is called by the socket_build() and socket_accept() functions. |
---|
257 | // It allocates memory in cluster defined by the <cxy> argument for all structures |
---|
258 | // associated to a socket: file descriptor, socket descriptor, RX buffer, R2T queue, |
---|
259 | // and CRQ queue. It allocates an fdid, and register it in the process fd_array. |
---|
260 | // It initialise the the socket desccriptor static fields, other than local_addr, |
---|
261 | // local_port, remote_addr, remote_port), and set the socket state to UNBOUND. |
---|
262 | // It returns the local pointer on socket descriptor and the fdid value in buffers |
---|
263 | // defined by the <socket_ptr> & <fdid_ptr> arguments. |
---|
264 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
265 | // @ cxy : [in] target cluster fo socket & file descriptors. |
---|
266 | // @ domain : [in] socket domain. |
---|
267 | // @ type : [in] socket type. |
---|
268 | // @ socket_ptr : [out] local pointer on buffer for socket pointer. |
---|
269 | // @ fdid_ptr : [out] local pointer on buffer for fdid value. |
---|
270 | // # return 0 if success / return -1 if no memory. |
---|
271 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
272 | static error_t socket_create( cxy_t cxy, |
---|
273 | uint32_t domain, |
---|
274 | uint32_t type, |
---|
275 | socket_t ** socket_ptr, |
---|
276 | uint32_t * fdid_ptr ) |
---|
277 | { |
---|
278 | uint32_t fdid; |
---|
279 | |
---|
280 | thread_t * this = CURRENT_THREAD; |
---|
281 | process_t * process = this->process; |
---|
282 | |
---|
283 | kmem_req_t req; |
---|
284 | socket_t * socket; |
---|
285 | vfs_file_t * file; |
---|
286 | uint32_t state; |
---|
287 | error_t error; |
---|
288 | |
---|
289 | #if DEBUG_SOCKET_CREATE |
---|
290 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
291 | if( DEBUG_SOCKET_CREATE < cycle ) |
---|
292 | printk("\n[%s] thread[%x,%x] enter / cycle %d\n", |
---|
293 | __FUNCTION__, process->pid, this->trdid, cycle ); |
---|
294 | #endif |
---|
295 | |
---|
296 | // allocate memory for socket descriptor |
---|
297 | req.type = KMEM_KCM; |
---|
298 | req.order = bits_log2( sizeof(socket_t) ); |
---|
299 | req.flags = AF_ZERO; |
---|
300 | socket = kmem_remote_alloc( cxy , &req ); |
---|
301 | |
---|
302 | if( socket == NULL ) |
---|
303 | { |
---|
304 | printk("\n[ERROR] in %s : cannot allocate socket descriptor / thread[%x,%x]\n", |
---|
305 | __FUNCTION__, process->pid, this->trdid ); |
---|
306 | return -1; |
---|
307 | } |
---|
308 | |
---|
309 | // allocate memory for rx_buf buffer |
---|
310 | error = remote_buf_init( XPTR( cxy , &socket->rx_buf ), |
---|
311 | NIC_RX_BUF_SIZE ); |
---|
312 | |
---|
313 | if( error ) |
---|
314 | { |
---|
315 | printk("\n[ERROR] in %s : cannot allocate rx_buf / thread[%x,%x]\n", |
---|
316 | __FUNCTION__, process->pid, this->trdid ); |
---|
317 | req.type = KMEM_KCM; |
---|
318 | req.ptr = socket; |
---|
319 | kmem_remote_free( cxy , &req ); |
---|
320 | return -1; |
---|
321 | } |
---|
322 | |
---|
323 | // allocate memory for r2tq queue |
---|
324 | error = remote_buf_init( XPTR( cxy , &socket->r2tq ), |
---|
325 | NIC_R2T_QUEUE_SIZE ); |
---|
326 | if( error ) |
---|
327 | { |
---|
328 | printk("\n[ERROR] in %s : cannot allocate R2T queue / thread[%x,%x]\n", |
---|
329 | __FUNCTION__, process->pid, this->trdid ); |
---|
330 | remote_buf_destroy( XPTR( cxy , &socket->rx_buf ) ); |
---|
331 | req.type = KMEM_KCM; |
---|
332 | req.ptr = socket; |
---|
333 | kmem_remote_free( cxy , &req ); |
---|
334 | return -1; |
---|
335 | } |
---|
336 | |
---|
337 | // don't allocate memory for crqq queue, as it is done by the socket_listen function |
---|
338 | |
---|
339 | // allocate memory for file descriptor |
---|
340 | req.type = KMEM_KCM; |
---|
341 | req.order = bits_log2( sizeof(vfs_file_t) ); |
---|
342 | req.flags = AF_ZERO; |
---|
343 | file = kmem_remote_alloc( cxy , &req ); |
---|
344 | |
---|
345 | if( file == NULL ) |
---|
346 | { |
---|
347 | printk("\n[ERROR] in %s : cannot allocate file descriptor / thread[%x,%x]\n", |
---|
348 | __FUNCTION__, process->pid, this->trdid ); |
---|
349 | remote_buf_destroy( XPTR( cxy , &socket->r2tq ) ); |
---|
350 | remote_buf_destroy( XPTR( cxy , &socket->rx_buf ) ); |
---|
351 | req.type = KMEM_KCM; |
---|
352 | req.ptr = socket; |
---|
353 | kmem_remote_free( cxy , &req ); |
---|
354 | return -1; |
---|
355 | } |
---|
356 | |
---|
357 | // get an fdid value, and register file descriptor in fd_array[] |
---|
358 | error = process_fd_register( process->ref_xp, |
---|
359 | XPTR( cxy , file ), |
---|
360 | &fdid ); |
---|
361 | if ( error ) |
---|
362 | { |
---|
363 | printk("\n[ERROR] in %s : cannot register file descriptor / thread[%x,%x]\n", |
---|
364 | __FUNCTION__, process->pid, this->trdid ); |
---|
365 | req.type = KMEM_KCM; |
---|
366 | req.ptr = file; |
---|
367 | kmem_free( &req ); |
---|
368 | remote_buf_destroy( XPTR( cxy , &socket->r2tq ) ); |
---|
369 | remote_buf_destroy( XPTR( cxy , &socket->rx_buf ) ); |
---|
370 | req.ptr = socket; |
---|
371 | kmem_free( &req ); |
---|
372 | return -1; |
---|
373 | } |
---|
374 | |
---|
375 | state = (type == SOCK_STREAM) ? TCP_STATE_UNBOUND : UDP_STATE_UNBOUND; |
---|
376 | |
---|
377 | // initialise socket descriptor |
---|
378 | hal_remote_s32( XPTR( cxy , &socket->pid ) , process->pid ); |
---|
379 | hal_remote_s32( XPTR( cxy , &socket->fdid ) , fdid ); |
---|
380 | hal_remote_s32( XPTR( cxy , &socket->domain ) , domain ); |
---|
381 | hal_remote_s32( XPTR( cxy , &socket->type ) , type ); |
---|
382 | hal_remote_s32( XPTR( cxy , &socket->state ) , state ); |
---|
383 | hal_remote_s64( XPTR( cxy , &socket->tx_client ) , XPTR_NULL ); |
---|
384 | hal_remote_s64( XPTR( cxy , &socket->rx_client ) , XPTR_NULL ); |
---|
385 | hal_remote_s32( XPTR( cxy , &socket->tx_valid ) , false ); |
---|
386 | hal_remote_s32( XPTR( cxy , &socket->rx_valid ) , false ); |
---|
387 | hal_remote_s32( XPTR( cxy , &socket->nic_channel ) , 0 ); |
---|
388 | |
---|
389 | // initialize file descriptor |
---|
390 | hal_remote_s32( XPTR( cxy , &file->type ) , INODE_TYPE_SOCK ); |
---|
391 | hal_remote_spt( XPTR( cxy , &file->socket ) , socket ); |
---|
392 | hal_remote_s32( XPTR( cxy , &file->refcount ) , 1 ); |
---|
393 | |
---|
394 | // initialize socket lock |
---|
395 | remote_queuelock_init( XPTR( cxy , &socket->lock ) , LOCK_SOCKET_STATE ); |
---|
396 | |
---|
397 | #if DEBUG_SOCKET_CREATE |
---|
398 | if( DEBUG_SOCKET_CREATE < cycle ) |
---|
399 | printk("\n[%s] thread[%x,%x] exit / socket[%x,%d] / xptr[%x,%x] / cycle %d\n", |
---|
400 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cxy, socket, cycle ); |
---|
401 | #endif |
---|
402 | |
---|
403 | // return success |
---|
404 | *socket_ptr = socket; |
---|
405 | *fdid_ptr = fdid; |
---|
406 | |
---|
407 | return 0; |
---|
408 | |
---|
409 | } // end socket_create |
---|
410 | |
---|
411 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
412 | // This static function is called by the socket_close() function to destroy a socket |
---|
413 | // identified by the <file_xp> argument. |
---|
414 | // It remove the associated file from the reference process fd_array. It unlink the |
---|
415 | // socket from the NIC_TX [k] and NIC_RX[k] chdevs. It release all memory allocated |
---|
416 | // for the structures associated to the target socket socket : file descriptor, |
---|
417 | // socket descriptor, RX buffer, R2T queue, CRQ queue. |
---|
418 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
419 | // @ file_xp : extended pointer on the file descriptor. |
---|
420 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
421 | static void socket_destroy( xptr_t file_xp ) |
---|
422 | { |
---|
423 | kmem_req_t req; |
---|
424 | |
---|
425 | thread_t * this = CURRENT_THREAD; |
---|
426 | process_t * process = this->process; |
---|
427 | |
---|
428 | // check file_xp argument |
---|
429 | assert( (file_xp != XPTR_NULL), "illegal argument\n" ); |
---|
430 | |
---|
431 | // get cluster & local pointer for file descriptor |
---|
432 | vfs_file_t * file_ptr = GET_PTR( file_xp ); |
---|
433 | cxy_t file_cxy = GET_CXY( file_xp ); |
---|
434 | |
---|
435 | #if DEBUG_SOCKET_DESTROY |
---|
436 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
437 | if( DEBUG_SOCKET_DESTROY < cycle ) |
---|
438 | printk("\n[%s] thread[%x,%x] enter / file[%x,%x] / cycle %d\n", |
---|
439 | __FUNCTION__, process->pid, this->trdid, file_cxy, file_ptr, cycle ); |
---|
440 | #endif |
---|
441 | |
---|
442 | // get local pointer for socket and file type |
---|
443 | socket_t * socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
444 | uint32_t file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
445 | |
---|
446 | // check file descriptor type |
---|
447 | assert( (file_type == INODE_TYPE_SOCK), "illegal file type\n" ); |
---|
448 | |
---|
449 | // get socket nic_channel and fdid |
---|
450 | uint32_t channel = hal_remote_l32( XPTR( file_cxy , &socket_ptr->nic_channel )); |
---|
451 | uint32_t fdid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->fdid )); |
---|
452 | |
---|
453 | // remove socket from NIC_TX & NIC_RX chdev queues when socket is connected |
---|
454 | if( channel < LOCAL_CLUSTER->nb_nic_channels ) |
---|
455 | { |
---|
456 | socket_unlink_from_servers( XPTR( file_cxy , socket_ptr ) ); |
---|
457 | } |
---|
458 | |
---|
459 | // remove the file descriptor from the fd_array |
---|
460 | process_fd_remove( process->owner_xp , fdid ); |
---|
461 | |
---|
462 | // release memory allocated for file descriptor |
---|
463 | req.type = KMEM_KCM; |
---|
464 | req.ptr = file_ptr; |
---|
465 | kmem_remote_free( file_cxy , &req ); |
---|
466 | |
---|
467 | // release memory allocated for buffers attached to socket descriptor |
---|
468 | remote_buf_destroy( XPTR( file_cxy , &socket_ptr->crqq ) ); |
---|
469 | remote_buf_destroy( XPTR( file_cxy , &socket_ptr->r2tq ) ); |
---|
470 | remote_buf_destroy( XPTR( file_cxy , &socket_ptr->rx_buf ) ); |
---|
471 | |
---|
472 | // release memory allocated for socket descriptor |
---|
473 | req.type = KMEM_KCM; |
---|
474 | req.ptr = socket_ptr; |
---|
475 | kmem_remote_free( file_cxy , &req ); |
---|
476 | |
---|
477 | #if DEBUG_SOCKET_DESTROY |
---|
478 | cycle = (uint32_t)hal_get_cycles(); |
---|
479 | if( DEBUG_SOCKET_DESTROY < cycle ) |
---|
480 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n", |
---|
481 | __FUNCTION__, process->pid, this->trdid, cycle ); |
---|
482 | #endif |
---|
483 | |
---|
484 | } // end socket_destroy() |
---|
485 | |
---|
486 | //////////////////////////////////////////////// |
---|
487 | void socket_put_r2t_request( xptr_t queue_xp, |
---|
488 | uint32_t flags, |
---|
489 | uint32_t channel ) |
---|
490 | { |
---|
491 | xptr_t chdev_xp; |
---|
492 | cxy_t chdev_cxy; |
---|
493 | chdev_t * chdev_ptr; |
---|
494 | thread_t * server_ptr; |
---|
495 | xptr_t server_xp; |
---|
496 | |
---|
497 | while( 1 ) |
---|
498 | { |
---|
499 | // try to register R2T request |
---|
500 | error_t error = remote_buf_put_from_kernel( queue_xp, |
---|
501 | (uint8_t *)(&flags), |
---|
502 | 1 ); |
---|
503 | if( error ) |
---|
504 | { |
---|
505 | // queue full => wait and retry |
---|
506 | sched_yield( "waiting R2T queue" ); |
---|
507 | } |
---|
508 | else |
---|
509 | { |
---|
510 | // get NIC_TX chdev pointers |
---|
511 | chdev_xp = chdev_dir.nic_tx[channel]; |
---|
512 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
513 | chdev_ptr = GET_PTR( chdev_xp ); |
---|
514 | |
---|
515 | // get NIC_TX server thread pointers |
---|
516 | server_ptr = hal_remote_lpt( XPTR( chdev_cxy , &chdev_ptr->server ) ); |
---|
517 | server_xp = XPTR( chdev_cxy , server_ptr ); |
---|
518 | |
---|
519 | // unblocks NIC_TX server thread |
---|
520 | thread_unblock( server_xp , THREAD_BLOCKED_CLIENT ); |
---|
521 | |
---|
522 | return; |
---|
523 | } |
---|
524 | } |
---|
525 | } // end socket_put_r2t_request() |
---|
526 | |
---|
527 | /////////////////////////////////////////////////// |
---|
528 | error_t socket_put_crq_request( xptr_t queue_xp, |
---|
529 | uint32_t remote_addr, |
---|
530 | uint32_t remote_port, |
---|
531 | uint32_t remote_iss, |
---|
532 | uint32_t remote_window ) |
---|
533 | { |
---|
534 | connect_request_t req; |
---|
535 | |
---|
536 | // build request |
---|
537 | req.addr = remote_addr; |
---|
538 | req.port = remote_port; |
---|
539 | req.iss = remote_iss; |
---|
540 | req.window = remote_window; |
---|
541 | |
---|
542 | // try to register request in CRQ |
---|
543 | return remote_buf_put_from_kernel( queue_xp, |
---|
544 | (uint8_t *)(&req), |
---|
545 | sizeof(connect_request_t) ); |
---|
546 | } // end socket_put_crq_request() |
---|
547 | |
---|
548 | //////////////////////////////////////////////////// |
---|
549 | error_t socket_get_crq_request( xptr_t queue_xp, |
---|
550 | uint32_t * remote_addr, |
---|
551 | uint32_t * remote_port, |
---|
552 | uint32_t * remote_iss, |
---|
553 | uint32_t * remote_window ) |
---|
554 | { |
---|
555 | connect_request_t req; |
---|
556 | error_t error; |
---|
557 | |
---|
558 | // get request from CRQ |
---|
559 | error = remote_buf_get_to_kernel( queue_xp, |
---|
560 | (uint8_t *)(&req), |
---|
561 | sizeof(connect_request_t) ); |
---|
562 | // extract request arguments |
---|
563 | *remote_addr = req.addr; |
---|
564 | *remote_port = req.port; |
---|
565 | *remote_iss = req.iss; |
---|
566 | *remote_window = req.window; |
---|
567 | |
---|
568 | return error; |
---|
569 | |
---|
570 | } // end socket_get_crq_request() |
---|
571 | |
---|
572 | |
---|
573 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
574 | // Functions implementing the SOCKET related syscalls |
---|
575 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
576 | |
---|
577 | ////////////////////////////////////// |
---|
578 | int socket_build( uint32_t domain, |
---|
579 | uint32_t type ) |
---|
580 | { |
---|
581 | uint32_t fdid; |
---|
582 | socket_t * socket; |
---|
583 | error_t error; |
---|
584 | |
---|
585 | #if DEBUG_SOCKET_BUILD |
---|
586 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
587 | thread_t * this = CURRENT_THREAD; |
---|
588 | process_t * process = this->process; |
---|
589 | if( DEBUG_SOCKET_BUILD < cycle ) |
---|
590 | printk("\n[%s] thread[%x,%x] enter / %s / %s / cycle %d\n", |
---|
591 | __FUNCTION__, process->pid, this->trdid, |
---|
592 | socket_domain_str(domain), socket_type_str(type), cycle ); |
---|
593 | #endif |
---|
594 | |
---|
595 | |
---|
596 | // allocate memory for the file descriptor and for the socket |
---|
597 | error = socket_create( local_cxy, |
---|
598 | domain, |
---|
599 | type, |
---|
600 | &socket, |
---|
601 | &fdid ); |
---|
602 | |
---|
603 | #if DEBUG_SOCKET_BUILD |
---|
604 | cycle = (uint32_t)hal_get_cycles(); |
---|
605 | if( DEBUG_SOCKET_BUILD < cycle ) |
---|
606 | printk("\n[%s] thread[%x,%x] exit / socket %x / fdid %d / %s / cycle %d\n", |
---|
607 | __FUNCTION__, process->pid, this->trdid, socket, fdid, |
---|
608 | socket_state_str(hal_remote_l32(XPTR(local_cxy , &socket->state))), |
---|
609 | cycle ); |
---|
610 | #endif |
---|
611 | |
---|
612 | if( error ) return -1; |
---|
613 | return fdid; |
---|
614 | } |
---|
615 | |
---|
616 | //////////////////////////////// |
---|
617 | int socket_bind( uint32_t fdid, |
---|
618 | uint32_t addr, |
---|
619 | uint16_t port ) |
---|
620 | { |
---|
621 | vfs_inode_type_t file_type; |
---|
622 | socket_t * socket; |
---|
623 | uint32_t socket_type; |
---|
624 | uint32_t socket_state; |
---|
625 | |
---|
626 | thread_t * this = CURRENT_THREAD; |
---|
627 | process_t * process = this->process; |
---|
628 | |
---|
629 | #if DEBUG_SOCKET_BIND |
---|
630 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
631 | if( DEBUG_SOCKET_BIND < cycle ) |
---|
632 | printk("\n[%s] thread[%x,%x] enter / socket[%x,%d] / addr %x / port %x / cycle %d\n", |
---|
633 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, addr, port, cycle ); |
---|
634 | #endif |
---|
635 | |
---|
636 | // get pointers on file descriptor |
---|
637 | xptr_t file_xp = process_fd_get_xptr_from_local( process , fdid ); |
---|
638 | vfs_file_t * file_ptr = GET_PTR( file_xp ); |
---|
639 | cxy_t file_cxy = GET_CXY( file_xp ); |
---|
640 | |
---|
641 | // check file_xp |
---|
642 | if( file_xp == XPTR_NULL ) |
---|
643 | { |
---|
644 | printk("\n[ERROR] in %s : undefined fdid %d / thread[%x,%x]\n", |
---|
645 | __FUNCTION__, fdid, process->pid, this->trdid ); |
---|
646 | return -1; |
---|
647 | } |
---|
648 | |
---|
649 | file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
650 | socket = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
651 | |
---|
652 | // check file descriptor type |
---|
653 | if( file_type != INODE_TYPE_SOCK ) |
---|
654 | { |
---|
655 | printk("\n[ERROR] in %s : illegal file type %s / thread[%x,%x]", |
---|
656 | __FUNCTION__, vfs_inode_type_str( file_type ), process->pid, this->trdid ); |
---|
657 | return -1; |
---|
658 | } |
---|
659 | |
---|
660 | // get socket type |
---|
661 | socket_type = hal_remote_l32(XPTR( file_cxy , &socket->type )); |
---|
662 | |
---|
663 | // compute socket state |
---|
664 | socket_state = (socket_type == SOCK_STREAM) ? TCP_STATE_BOUND : UDP_STATE_BOUND; |
---|
665 | |
---|
666 | // update the socket descriptor |
---|
667 | hal_remote_s32( XPTR( file_cxy , &socket->local_addr ) , addr ); |
---|
668 | hal_remote_s32( XPTR( file_cxy , &socket->local_port ) , port ); |
---|
669 | hal_remote_s32( XPTR( file_cxy , &socket->state ) , socket_state ); |
---|
670 | |
---|
671 | #if DEBUG_SOCKET_BIND |
---|
672 | cycle = (uint32_t)hal_get_cycles(); |
---|
673 | if( DEBUG_SOCKET_BIND < cycle ) |
---|
674 | printk("\n[%s] thread[%x,%x] exit / socket[%x,%d] / %s / addr %x / port %x / cycle %d\n", |
---|
675 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, |
---|
676 | socket_state_str(hal_remote_l32( XPTR( file_cxy , &socket->state ))), |
---|
677 | hal_remote_l32( XPTR( file_cxy , &socket->local_addr )), |
---|
678 | hal_remote_l32( XPTR( file_cxy , &socket->local_port )), |
---|
679 | cycle ); |
---|
680 | #endif |
---|
681 | |
---|
682 | return 0; |
---|
683 | |
---|
684 | } // end socket_bind() |
---|
685 | |
---|
686 | ////////////////////////////////// |
---|
687 | int socket_listen( uint32_t fdid, |
---|
688 | uint32_t crq_depth ) |
---|
689 | { |
---|
690 | xptr_t file_xp; |
---|
691 | vfs_file_t * file_ptr; |
---|
692 | cxy_t file_cxy; |
---|
693 | vfs_inode_type_t file_type; |
---|
694 | socket_t * socket_ptr; |
---|
695 | uint32_t socket_type; |
---|
696 | uint32_t socket_state; |
---|
697 | uint32_t socket_local_addr; |
---|
698 | uint32_t socket_local_port; |
---|
699 | error_t error; |
---|
700 | |
---|
701 | thread_t * this = CURRENT_THREAD; |
---|
702 | process_t * process = this->process; |
---|
703 | |
---|
704 | #if DEBUG_SOCKET_LISTEN |
---|
705 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
706 | if( DEBUG_SOCKET_LISTEN < cycle ) |
---|
707 | printk("\n[%s] thread[%x,%x] enter / socket[%x,%d] / crq_depth %x / cycle %d\n", |
---|
708 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, crq_depth, cycle ); |
---|
709 | #endif |
---|
710 | |
---|
711 | // get pointers on file descriptor |
---|
712 | file_xp = process_fd_get_xptr_from_local( process , fdid ); |
---|
713 | file_ptr = GET_PTR( file_xp ); |
---|
714 | file_cxy = GET_CXY( file_xp ); |
---|
715 | |
---|
716 | // check file_xp |
---|
717 | if( file_xp == XPTR_NULL ) |
---|
718 | { |
---|
719 | printk("\n[ERROR] in %s : undefined fdid %d / thread[%x,%x]\n", |
---|
720 | __FUNCTION__, fdid, process->pid, this->trdid ); |
---|
721 | return -1; |
---|
722 | } |
---|
723 | |
---|
724 | file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
725 | socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
726 | |
---|
727 | // check file descriptor type |
---|
728 | if( file_type != INODE_TYPE_SOCK ) |
---|
729 | { |
---|
730 | printk("\n[ERROR] in %s : illegal file type %s / thread[%x,%x]\n", |
---|
731 | __FUNCTION__, vfs_inode_type_str(file_type), process->pid, this->trdid ); |
---|
732 | return -1; |
---|
733 | } |
---|
734 | |
---|
735 | // get relevant infos from <fdid> socket descriptor |
---|
736 | socket_type = hal_remote_l32( XPTR( file_cxy , &socket_ptr->type )); |
---|
737 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state )); |
---|
738 | socket_local_addr = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_addr )); |
---|
739 | socket_local_port = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_port )); |
---|
740 | |
---|
741 | // check socket type |
---|
742 | if( socket_type != SOCK_STREAM ) |
---|
743 | { |
---|
744 | printk("\n[ERROR] in %s : illegal socket type %s / thread[%x,%x]\n", |
---|
745 | __FUNCTION__, socket_type_str(socket_type), process->pid, this->trdid ); |
---|
746 | return -1; |
---|
747 | } |
---|
748 | |
---|
749 | // check socket state |
---|
750 | if( socket_state != TCP_STATE_BOUND ) |
---|
751 | { |
---|
752 | printk("\n[ERROR] in %s : illegal socket state %s / thread[%x,%x]\n", |
---|
753 | __FUNCTION__, socket_state_str(socket_state), process->pid, this->trdid ); |
---|
754 | return -1; |
---|
755 | } |
---|
756 | |
---|
757 | // compute CRQ queue depth : max( crq_depth , NIC_CRQ_QUEUE_SIZE ) |
---|
758 | uint32_t depth = ( crq_depth > NIC_CRQ_QUEUE_SIZE ) ? crq_depth : NIC_CRQ_QUEUE_SIZE; |
---|
759 | |
---|
760 | // allocate memory for the CRQ queue |
---|
761 | error = remote_buf_init( XPTR( file_cxy , &socket_ptr->crqq ), |
---|
762 | depth * sizeof(connect_request_t) ); |
---|
763 | if( error ) |
---|
764 | { |
---|
765 | printk("\n[ERROR] in %s : cannot allocate CRQ queue / thread[%x,%x]\n", |
---|
766 | __FUNCTION__, process->pid, this->trdid ); |
---|
767 | return -1; |
---|
768 | } |
---|
769 | |
---|
770 | // update socket.state |
---|
771 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->state ) , TCP_STATE_LISTEN ); |
---|
772 | |
---|
773 | // get pointers on NIC_RX[0] chdev |
---|
774 | xptr_t rx0_chdev_xp = chdev_dir.nic_rx[0]; |
---|
775 | chdev_t * rx0_chdev_ptr = GET_PTR( rx0_chdev_xp ); |
---|
776 | cxy_t rx0_chdev_cxy = GET_CXY( rx0_chdev_xp ); |
---|
777 | |
---|
778 | // build extended pointers on list of listening sockets |
---|
779 | xptr_t rx0_root_xp = XPTR( rx0_chdev_cxy , &rx0_chdev_ptr->ext.nic.root ); |
---|
780 | xptr_t rx0_lock_xp = XPTR( rx0_chdev_cxy , &rx0_chdev_ptr->ext.nic.lock ); |
---|
781 | |
---|
782 | // build extended pointer on socket rx_list field |
---|
783 | xptr_t list_entry_xp = XPTR( file_cxy , &socket_ptr->rx_list ); |
---|
784 | |
---|
785 | // register <fdid> socket in listening sockets list |
---|
786 | remote_busylock_acquire( rx0_lock_xp ); |
---|
787 | xlist_add_last( rx0_root_xp , list_entry_xp ); |
---|
788 | remote_busylock_release( rx0_lock_xp ); |
---|
789 | |
---|
790 | #if DEBUG_SOCKET_LISTEN |
---|
791 | cycle = (uint32_t)hal_get_cycles(); |
---|
792 | if( DEBUG_SOCKET_LISTEN < cycle ) |
---|
793 | printk("\n[%s] thread[%x,%x] exit / socket[%x,%d] / %s / cycle %d\n", |
---|
794 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, |
---|
795 | socket_state_str(socket_state), cycle ); |
---|
796 | #endif |
---|
797 | |
---|
798 | return 0; |
---|
799 | |
---|
800 | } // end socket_listen() |
---|
801 | |
---|
802 | /////////////////////////////////// |
---|
803 | int socket_accept( uint32_t fdid, |
---|
804 | uint32_t * remote_addr, |
---|
805 | uint16_t * remote_port ) |
---|
806 | { |
---|
807 | xptr_t file_xp; // extended pointer on remote file |
---|
808 | vfs_file_t * file_ptr; |
---|
809 | cxy_t file_cxy; |
---|
810 | vfs_inode_type_t file_type; // file descriptor type |
---|
811 | socket_t * socket_ptr; // local pointer on remote waiting socket |
---|
812 | uint32_t socket_type; // listening socket type |
---|
813 | uint32_t socket_state; // listening socket state |
---|
814 | uint32_t socket_domain; // listening socket domain |
---|
815 | uint32_t socket_local_addr; // listening socket local IP address |
---|
816 | uint32_t socket_local_port; // listening socket local port |
---|
817 | uint32_t socket_tx_nxt; // listening socket tx_nxt |
---|
818 | bool_t socket_tx_valid; // listening socket tx_valid |
---|
819 | xptr_t socket_tx_client; // listening socket tx_client thread |
---|
820 | bool_t socket_rx_valid; // listening socket rx_valid |
---|
821 | xptr_t socket_rx_client; // listening socket rx_client thread |
---|
822 | xptr_t socket_lock_xp; // listening socket lock |
---|
823 | xptr_t crq_xp; // listening socket CRQ queue |
---|
824 | uint32_t crq_status; // number of bytes in CRQ |
---|
825 | cxy_t new_socket_cxy; // new socket cluster identifier |
---|
826 | socket_t * new_socket_ptr; // local pointer on new socket |
---|
827 | xptr_t new_socket_xp; // extended pointer on new socket |
---|
828 | volatile uint32_t new_state; // new socket state (modified by NIC_RX thread) |
---|
829 | uint32_t new_fdid; // new socket file descriptor index |
---|
830 | uint32_t new_remote_addr; // new socket remote IP address |
---|
831 | uint32_t new_remote_port; // new socket remote port |
---|
832 | uint32_t new_remote_iss; // new socket remote iss |
---|
833 | uint32_t new_remote_window; // new socket receive window |
---|
834 | xptr_t tx_server_xp; // extended pointer on TX server thread |
---|
835 | thread_t * tx_server_ptr; // local pointer on TX server thread |
---|
836 | uint32_t cmd_status; // command status (rx_sts or tx_sts) |
---|
837 | bool_t cmd_valid; // valid command (rx_valid or tx_valid) |
---|
838 | error_t error; |
---|
839 | |
---|
840 | thread_t * this = CURRENT_THREAD; |
---|
841 | xptr_t client_xp = XPTR( local_cxy , this ); |
---|
842 | process_t * process = this->process; |
---|
843 | |
---|
844 | #if DEBUG_SOCKET_ACCEPT |
---|
845 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
846 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
847 | printk("\n[%s] thread[%x,%x] enter for socket[%x,%d] / cycle %d\n", |
---|
848 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
849 | #endif |
---|
850 | |
---|
851 | // 1) get pointers on file descriptor |
---|
852 | file_xp = process_fd_get_xptr_from_local( process , fdid ); |
---|
853 | file_ptr = GET_PTR( file_xp ); |
---|
854 | file_cxy = GET_CXY( file_xp ); |
---|
855 | |
---|
856 | // check file_xp |
---|
857 | if( file_xp == XPTR_NULL ) |
---|
858 | { |
---|
859 | printk("\n[ERROR] in %s : undefined fdid %d", |
---|
860 | __FUNCTION__, fdid ); |
---|
861 | return -1; |
---|
862 | } |
---|
863 | |
---|
864 | file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
865 | socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
866 | |
---|
867 | // check file descriptor type |
---|
868 | if( file_type != INODE_TYPE_SOCK ) |
---|
869 | { |
---|
870 | printk("\n[ERROR] in %s : illegal file type %s / thread[%x,%x]\n", |
---|
871 | __FUNCTION__, vfs_inode_type_str(file_type), process->pid, this->trdid ); |
---|
872 | return -1; |
---|
873 | } |
---|
874 | |
---|
875 | // build extended pointer on listening socket lock |
---|
876 | socket_lock_xp = XPTR( file_cxy , &socket_ptr->lock ); |
---|
877 | |
---|
878 | // acquire listening socket lock |
---|
879 | remote_queuelock_acquire( socket_lock_xp ); |
---|
880 | |
---|
881 | // get listening socket type, domain, state, local_addr, local_port & tx_nxt |
---|
882 | socket_type = hal_remote_l32( XPTR( file_cxy , &socket_ptr->type )); |
---|
883 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state )); |
---|
884 | socket_domain = hal_remote_l32( XPTR( file_cxy , &socket_ptr->domain )); |
---|
885 | socket_local_addr = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_addr )); |
---|
886 | socket_local_port = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_port )); |
---|
887 | socket_tx_nxt = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_nxt )); |
---|
888 | socket_tx_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid )); |
---|
889 | socket_tx_client = hal_remote_l64( XPTR( file_cxy , &socket_ptr->tx_client )); |
---|
890 | socket_rx_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_valid )); |
---|
891 | socket_rx_client = hal_remote_l64( XPTR( file_cxy , &socket_ptr->rx_client )); |
---|
892 | |
---|
893 | // check socket type |
---|
894 | if( socket_type != SOCK_STREAM ) |
---|
895 | { |
---|
896 | // release listening socket lock |
---|
897 | remote_queuelock_release( socket_lock_xp ); |
---|
898 | |
---|
899 | printk("\n[ERROR] in %s : illegal socket type %s / thread[%x,%x]\n", |
---|
900 | __FUNCTION__, socket_type_str(socket_type), process->pid , this->trdid ); |
---|
901 | return -1; |
---|
902 | } |
---|
903 | |
---|
904 | // check socket state |
---|
905 | if( socket_state != TCP_STATE_LISTEN ) |
---|
906 | { |
---|
907 | // release listening socket lock |
---|
908 | remote_queuelock_release( socket_lock_xp ); |
---|
909 | |
---|
910 | printk("\n[ERROR] in %s : illegal socket state %s / thread[%x,%x]\n", |
---|
911 | __FUNCTION__, socket_state_str(socket_state), process->pid, this->trdid ); |
---|
912 | return -1; |
---|
913 | } |
---|
914 | |
---|
915 | // check no previous RX command |
---|
916 | if( (socket_rx_valid == true) || (socket_rx_client != XPTR_NULL) ) |
---|
917 | { |
---|
918 | // release listening socket lock |
---|
919 | remote_queuelock_release( socket_lock_xp ); |
---|
920 | |
---|
921 | printk("\n[ERROR] in %s : previous RX cmd on socket[%x,%d] / thread[%x,%x]\n", |
---|
922 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
923 | return -1; |
---|
924 | } |
---|
925 | |
---|
926 | // check no previous TX command |
---|
927 | if( (socket_tx_valid == true) || (socket_tx_client != XPTR_NULL) ) |
---|
928 | { |
---|
929 | // release socket lock |
---|
930 | remote_queuelock_release( socket_lock_xp ); |
---|
931 | |
---|
932 | printk("\n[ERROR] in %s : previous TX cmd on socket[%x,%d] / thread[%x,%x]\n", |
---|
933 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
934 | return -1; |
---|
935 | } |
---|
936 | |
---|
937 | // 2) build extended pointer on listening socket.crq |
---|
938 | crq_xp = XPTR( file_cxy , &socket_ptr->crqq ); |
---|
939 | |
---|
940 | // get CRQ status |
---|
941 | crq_status = remote_buf_status( crq_xp ); |
---|
942 | |
---|
943 | // block & deschedule when CRQ empty |
---|
944 | if( crq_status == 0 ) |
---|
945 | { |
---|
946 | // register command arguments in listening socket |
---|
947 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_cmd ), CMD_RX_ACCEPT ); |
---|
948 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->rx_client ), client_xp ); |
---|
949 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_valid ), true ); |
---|
950 | |
---|
951 | // release listening socket lock |
---|
952 | remote_queuelock_release( socket_lock_xp ); |
---|
953 | |
---|
954 | #if DEBUG_SOCKET_ACCEPT |
---|
955 | cycle = (uint32_t)hal_get_cycles(); |
---|
956 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
957 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / CRQ empty => blocks on <IO> / cycle %d\n", |
---|
958 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
959 | #endif |
---|
960 | // block & deschedule when CRQQ empty |
---|
961 | thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_IO ); |
---|
962 | sched_yield( "CRQ queue empty"); |
---|
963 | |
---|
964 | #if DEBUG_SOCKET_ACCEPT |
---|
965 | cycle = (uint32_t)hal_get_cycles(); |
---|
966 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
967 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / resumes / cycle %d\n", |
---|
968 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
969 | #endif |
---|
970 | // take listening socket lock |
---|
971 | remote_queuelock_acquire( socket_lock_xp ); |
---|
972 | |
---|
973 | // get CRQ status & command status |
---|
974 | cmd_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_valid ) ); |
---|
975 | cmd_status = hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_sts ) ); |
---|
976 | crq_status = remote_buf_status( crq_xp ); |
---|
977 | |
---|
978 | assert( (((crq_status > 0) || (cmd_status!= CMD_STS_SUCCESS)) && (cmd_valid == false)), |
---|
979 | "illegal socket state when client thread resumes after RX_ACCEPT" ); |
---|
980 | |
---|
981 | // reset socket.rx_client |
---|
982 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_client ) , XPTR_NULL ); |
---|
983 | |
---|
984 | if( cmd_status != CMD_STS_SUCCESS ) |
---|
985 | { |
---|
986 | // release socket lock |
---|
987 | remote_queuelock_release( socket_lock_xp ); |
---|
988 | |
---|
989 | printk("\n[ERROR] in %s for RX_ACCEPT command / socket[%x,%d] / thread[%x,%x]\n", |
---|
990 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
991 | return -1; |
---|
992 | } |
---|
993 | |
---|
994 | // extract first request from the listening socket CRQ |
---|
995 | error = socket_get_crq_request( crq_xp, |
---|
996 | &new_remote_addr, |
---|
997 | &new_remote_port, |
---|
998 | &new_remote_iss, |
---|
999 | &new_remote_window ); |
---|
1000 | |
---|
1001 | assert( (error == 0), |
---|
1002 | "cannot get a connection request from a non-empty CRQ" ); |
---|
1003 | |
---|
1004 | // reset listening socket rx_client |
---|
1005 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_client ) , XPTR_NULL ); |
---|
1006 | |
---|
1007 | // release socket lock |
---|
1008 | remote_queuelock_release( socket_lock_xp ); |
---|
1009 | |
---|
1010 | } // end blocking on CRQ status |
---|
1011 | |
---|
1012 | // from this point, we can create a new socket |
---|
1013 | // and ask the NIC_TX to send a SYN-ACK segment |
---|
1014 | |
---|
1015 | #if DEBUG_SOCKET_ACCEPT |
---|
1016 | cycle = (uint32_t)hal_get_cycles(); |
---|
1017 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
1018 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / got a CRQ request / cycle %d\n", |
---|
1019 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1020 | #endif |
---|
1021 | |
---|
1022 | // 3) select a cluster for the new socket |
---|
1023 | new_socket_cxy = cluster_random_select(); |
---|
1024 | |
---|
1025 | // allocate memory for the new socket descriptor |
---|
1026 | error = socket_create( new_socket_cxy, |
---|
1027 | socket_domain, |
---|
1028 | socket_type, |
---|
1029 | &new_socket_ptr, |
---|
1030 | &new_fdid ); |
---|
1031 | if( error ) |
---|
1032 | { |
---|
1033 | printk("\n[ERROR] in %s : cannot allocate new socket / thread[%x,%x]\n", |
---|
1034 | __FUNCTION__, process->pid, this->trdid ); |
---|
1035 | return -1; |
---|
1036 | } |
---|
1037 | |
---|
1038 | // build extended poiner on new socket |
---|
1039 | new_socket_xp = XPTR( new_socket_cxy , new_socket_ptr ); |
---|
1040 | |
---|
1041 | #if DEBUG_SOCKET_ACCEPT |
---|
1042 | cycle = (uint32_t)hal_get_cycles(); |
---|
1043 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
1044 | printk("\n[%s] thread[%x,%x] created new socket[%x,%d] / cycle %d\n", |
---|
1045 | __FUNCTION__, process->pid, this->trdid, process->pid, new_fdid, cycle ); |
---|
1046 | #endif |
---|
1047 | |
---|
1048 | // compute NIC channel index from remote_addr and remote_port |
---|
1049 | uint32_t new_nic_channel = dev_nic_get_key( new_remote_addr , new_remote_port ); |
---|
1050 | |
---|
1051 | // update new socket descriptor |
---|
1052 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->local_addr ) , socket_local_addr ); |
---|
1053 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->local_port ) , socket_local_port ); |
---|
1054 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->remote_addr) , new_remote_addr ); |
---|
1055 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->remote_port) , new_remote_port ); |
---|
1056 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->nic_channel) , new_nic_channel ); |
---|
1057 | hal_remote_s32(XPTR(new_socket_cxy , &new_socket_ptr->state ) , TCP_STATE_SYN_RCVD ); |
---|
1058 | |
---|
1059 | // set new socket TCB : increment tx_nxt / initialize rx_nxt, rx_irs, rx_wnd |
---|
1060 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->tx_nxt ), socket_tx_nxt + 1 ); |
---|
1061 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->rx_nxt ), new_remote_iss + 1 ); |
---|
1062 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->rx_irs ), new_remote_iss ); |
---|
1063 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->rx_wnd ), new_remote_window ); |
---|
1064 | |
---|
1065 | // link new socket to chdev servers |
---|
1066 | socket_link_to_servers( new_socket_xp , new_nic_channel ); |
---|
1067 | |
---|
1068 | // 3) get pointers on NIC_TX[channel] chdev |
---|
1069 | xptr_t tx_chdev_xp = chdev_dir.nic_tx[new_nic_channel]; |
---|
1070 | chdev_t * tx_chdev_ptr = GET_PTR( tx_chdev_xp ); |
---|
1071 | cxy_t tx_chdev_cxy = GET_CXY( tx_chdev_xp ); |
---|
1072 | |
---|
1073 | // get pointers on NIC_TX[channel] server thread |
---|
1074 | tx_server_ptr = hal_remote_lpt( XPTR( tx_chdev_cxy , &tx_chdev_ptr->server )); |
---|
1075 | tx_server_xp = XPTR( tx_chdev_cxy , tx_server_ptr ); |
---|
1076 | |
---|
1077 | // register command arguments in new socket to request a SYN_ACK segment |
---|
1078 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->tx_cmd ), CMD_TX_ACCEPT ); |
---|
1079 | hal_remote_s64( XPTR( new_socket_cxy , &new_socket_ptr->tx_client ), client_xp ); |
---|
1080 | hal_remote_s32( XPTR( new_socket_cxy , &new_socket_ptr->tx_valid ), true ); |
---|
1081 | |
---|
1082 | // unblock NIC_TX server thread |
---|
1083 | thread_unblock( tx_server_xp , THREAD_BLOCKED_CLIENT ); |
---|
1084 | |
---|
1085 | #if DEBUG_SOCKET_ACCEPT |
---|
1086 | cycle = (uint32_t)hal_get_cycles(); |
---|
1087 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
1088 | printk("\n[%s] thread[%x,%x] new_socket[%x,%d] blocks on <IO> waiting ESTAB / cycle %d\n", |
---|
1089 | __FUNCTION__, process->pid, this->trdid, process->pid, new_fdid, cycle ); |
---|
1090 | #endif |
---|
1091 | |
---|
1092 | // client thread blocks & deschedules |
---|
1093 | thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_IO ); |
---|
1094 | sched_yield( "waiting new socket connection"); |
---|
1095 | |
---|
1096 | #if DEBUG_SOCKET_ACCEPT |
---|
1097 | cycle = (uint32_t)hal_get_cycles(); |
---|
1098 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
1099 | printk("\n[%s] thread[%x,%x] new_socket[%x,%d] resumes / cycle %d\n", |
---|
1100 | __FUNCTION__, process->pid, this->trdid, process->pid, new_fdid, cycle ); |
---|
1101 | #endif |
---|
1102 | |
---|
1103 | // get new socket state, tx_valid and tx_sts |
---|
1104 | new_state = hal_remote_l32( XPTR( new_socket_cxy , &new_socket_ptr->state )); |
---|
1105 | cmd_valid = hal_remote_l32( XPTR( new_socket_cxy , &new_socket_ptr->tx_valid )); |
---|
1106 | cmd_status = hal_remote_l32( XPTR( new_socket_cxy , &new_socket_ptr->tx_sts )); |
---|
1107 | |
---|
1108 | assert( (((new_state == TCP_STATE_ESTAB) || (cmd_status != CMD_STS_SUCCESS)) |
---|
1109 | && (cmd_valid == false)), |
---|
1110 | "illegal socket state when client thread resumes after TX_ACCEPT" ); |
---|
1111 | |
---|
1112 | // reset socket.tx_client |
---|
1113 | hal_remote_s64( XPTR( new_socket_cxy , &new_socket_ptr->tx_client ) , XPTR_NULL ); |
---|
1114 | |
---|
1115 | if( cmd_status != CMD_STS_SUCCESS ) |
---|
1116 | { |
---|
1117 | printk("\n[ERROR] in %s for TX_ACCEPT command / socket[%x,%d] / thread[%x,%x]\n", |
---|
1118 | __FUNCTION__, process->pid, new_fdid, process->pid, this->trdid ); |
---|
1119 | return -1; |
---|
1120 | } |
---|
1121 | else |
---|
1122 | { |
---|
1123 | |
---|
1124 | #if DEBUG_SOCKET_ACCEPT |
---|
1125 | cycle = (uint32_t)hal_get_cycles(); |
---|
1126 | if( DEBUG_SOCKET_ACCEPT < cycle ) |
---|
1127 | printk("\n[%s] thread[%x,%x] new_socket[%x,%d] / state %s / addr %x / port %x / cycle %d\n", |
---|
1128 | __FUNCTION__, process->pid, this->trdid, process->pid, new_fdid, |
---|
1129 | socket_state_str(new_state), new_remote_addr, new_remote_port, cycle ); |
---|
1130 | #endif |
---|
1131 | |
---|
1132 | // return success |
---|
1133 | *remote_addr = new_remote_addr; |
---|
1134 | *remote_port = new_remote_port; |
---|
1135 | return new_fdid; |
---|
1136 | } |
---|
1137 | |
---|
1138 | } // end socket_accept() |
---|
1139 | |
---|
1140 | ////////////////////////////////// |
---|
1141 | int socket_connect( uint32_t fdid, |
---|
1142 | uint32_t remote_addr, |
---|
1143 | uint16_t remote_port ) |
---|
1144 | { |
---|
1145 | vfs_inode_type_t file_type; |
---|
1146 | socket_t * socket_ptr; // local pointer on thread descriptor |
---|
1147 | volatile uint32_t socket_state; // socket state (modified by the NIC_TX thread) |
---|
1148 | uint32_t socket_type; // socket type |
---|
1149 | uint32_t local_addr; // local IP address |
---|
1150 | uint32_t local_port; // local port |
---|
1151 | xptr_t tx_server_xp; // extended pointer on TX server thread |
---|
1152 | thread_t * tx_server_ptr; // local pointer on TX server thread |
---|
1153 | uint32_t nic_channel; // NIC channel index |
---|
1154 | uint32_t cmd_status; // command status (tx_sts field) |
---|
1155 | bool_t cmd_valid; // command valid (tx_valid field) |
---|
1156 | |
---|
1157 | thread_t * this = CURRENT_THREAD; |
---|
1158 | xptr_t client_xp = XPTR( local_cxy , this ); |
---|
1159 | |
---|
1160 | // get pointers on file descriptor |
---|
1161 | xptr_t file_xp = process_fd_get_xptr_from_local( this->process , fdid ); |
---|
1162 | vfs_file_t * file_ptr = GET_PTR( file_xp ); |
---|
1163 | cxy_t file_cxy = GET_CXY( file_xp ); |
---|
1164 | |
---|
1165 | // check file_xp |
---|
1166 | if( file_xp == XPTR_NULL ) |
---|
1167 | { |
---|
1168 | printk("\n[ERROR] in %s : undefined fdid %d", |
---|
1169 | __FUNCTION__, fdid ); |
---|
1170 | return -1; |
---|
1171 | } |
---|
1172 | |
---|
1173 | file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
1174 | socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
1175 | |
---|
1176 | #if DEBUG_SOCKET_CONNECT |
---|
1177 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1178 | pid_t pid = this->process->pid; |
---|
1179 | trdid_t trdid = this->trdid; |
---|
1180 | if( DEBUG_SOCKET_CONNECT < cycle ) |
---|
1181 | printk("\n[%s] thread[%x,%x] enter for socket[%x,%d] / addr %x / port %d / cycle %d\n", |
---|
1182 | __FUNCTION__, pid, trdid, pid, fdid, remote_addr, remote_port, cycle ); |
---|
1183 | #endif |
---|
1184 | |
---|
1185 | // check file descriptor type |
---|
1186 | if( file_type != INODE_TYPE_SOCK ) |
---|
1187 | { |
---|
1188 | printk("\n[ERROR] in %s : illegal file type %s", |
---|
1189 | __FUNCTION__, vfs_inode_type_str( file_type ) ); |
---|
1190 | return -1; |
---|
1191 | } |
---|
1192 | |
---|
1193 | // get relevant socket infos |
---|
1194 | socket_type = hal_remote_l32( XPTR( file_cxy , &socket_ptr->type ) ); |
---|
1195 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state ) ); |
---|
1196 | local_addr = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_addr ) ); |
---|
1197 | local_port = hal_remote_l32( XPTR( file_cxy , &socket_ptr->local_port ) ); |
---|
1198 | |
---|
1199 | if( socket_type == SOCK_DGRAM ) // UDP |
---|
1200 | { |
---|
1201 | if( socket_state != UDP_STATE_BOUND ) |
---|
1202 | { |
---|
1203 | printk("\n[ERROR] in %s : illegal socket state %s for type %s", |
---|
1204 | __FUNCTION__, socket_state_str(socket_state), socket_type_str(socket_type) ); |
---|
1205 | return -1; |
---|
1206 | } |
---|
1207 | } |
---|
1208 | else if( socket_type == SOCK_STREAM ) // TCP |
---|
1209 | { |
---|
1210 | if( socket_state != TCP_STATE_BOUND ) |
---|
1211 | { |
---|
1212 | printk("\n[ERROR] in %s : illegal socket state %s for type %s", |
---|
1213 | __FUNCTION__, socket_state_str(socket_state), socket_type_str(socket_type) ); |
---|
1214 | return -1; |
---|
1215 | } |
---|
1216 | } |
---|
1217 | else |
---|
1218 | { |
---|
1219 | printk("\n[ERROR] in %s : illegal socket type %s", |
---|
1220 | __FUNCTION__, socket_type_str(socket_type) ); |
---|
1221 | return -1; |
---|
1222 | } |
---|
1223 | |
---|
1224 | // compute nic_channel index from remote_addr and remote_port |
---|
1225 | nic_channel = dev_nic_get_key( remote_addr , remote_port ); |
---|
1226 | |
---|
1227 | // link socket to chdev servers |
---|
1228 | socket_link_to_servers( XPTR( file_cxy , socket_ptr ), nic_channel ); |
---|
1229 | |
---|
1230 | // update the socket descriptor |
---|
1231 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->remote_addr ) , remote_addr ); |
---|
1232 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->remote_port ) , remote_port ); |
---|
1233 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->nic_channel ) , nic_channel ); |
---|
1234 | |
---|
1235 | // the actual connection mechanism depends on socket type |
---|
1236 | // UDP : client thread updates the local socket state without blocking |
---|
1237 | // TCP : client thread request TX server thread to start the 3 steps handshake |
---|
1238 | |
---|
1239 | if( socket_type == SOCK_DGRAM ) // UDP |
---|
1240 | { |
---|
1241 | // directly update the local socket state |
---|
1242 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->state ) , UDP_STATE_ESTAB ); |
---|
1243 | |
---|
1244 | return 0; |
---|
1245 | } |
---|
1246 | else // TCP |
---|
1247 | { |
---|
1248 | // get pointers on NIC_TX[channel] chdev |
---|
1249 | xptr_t tx_chdev_xp = chdev_dir.nic_tx[nic_channel]; |
---|
1250 | chdev_t * tx_chdev_ptr = GET_PTR( tx_chdev_xp ); |
---|
1251 | cxy_t tx_chdev_cxy = GET_CXY( tx_chdev_xp ); |
---|
1252 | |
---|
1253 | // get pointers on NIC_TX[channel] server thread |
---|
1254 | tx_server_ptr = hal_remote_lpt( XPTR( tx_chdev_cxy , &tx_chdev_ptr->server )); |
---|
1255 | tx_server_xp = XPTR( tx_chdev_cxy , tx_server_ptr ); |
---|
1256 | |
---|
1257 | // register command arguments in socket descriptor for a SYN segment |
---|
1258 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_cmd ), CMD_TX_CONNECT ); |
---|
1259 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->tx_client ), client_xp ); |
---|
1260 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_valid ), true ); |
---|
1261 | |
---|
1262 | // unblock NIC_TX server thread |
---|
1263 | thread_unblock( tx_server_xp , THREAD_BLOCKED_CLIENT ); |
---|
1264 | |
---|
1265 | #if DEBUG_SOCKET_CONNECT |
---|
1266 | cycle = (uint32_t)hal_get_cycles(); |
---|
1267 | if( DEBUG_SOCKET_CONNECT < cycle ) |
---|
1268 | printk("\n[%s] thread[%x,%x] socket[%x,%d] blocks on <IO> waiting connexion / cycle %d \n", |
---|
1269 | __FUNCTION__, pid, trdid, pid, fdid, cycle ); |
---|
1270 | #endif |
---|
1271 | // block itself and deschedule |
---|
1272 | thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_IO ); |
---|
1273 | sched_yield( "waiting connection" ); |
---|
1274 | |
---|
1275 | #if DEBUG_SOCKET_CONNECT |
---|
1276 | cycle = (uint32_t)hal_get_cycles(); |
---|
1277 | if( DEBUG_SOCKET_CONNECT < cycle ) |
---|
1278 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / resumes / cycle %d \n", |
---|
1279 | __FUNCTION__, pid, trdid, pid, fdid, cycle ); |
---|
1280 | #endif |
---|
1281 | |
---|
1282 | // get socket state, tx_valid and tx_sts |
---|
1283 | cmd_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid )); |
---|
1284 | cmd_status = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_sts )); |
---|
1285 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state )); |
---|
1286 | |
---|
1287 | assert( (((socket_state == TCP_STATE_ESTAB) || (cmd_status != CMD_STS_SUCCESS)) |
---|
1288 | && (cmd_valid == false)), |
---|
1289 | "illegal socket state when client thread resumes after TX_CONNECT" ); |
---|
1290 | |
---|
1291 | // reset socket.tx_client |
---|
1292 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_client ) , XPTR_NULL ); |
---|
1293 | |
---|
1294 | if( cmd_status != CMD_STS_SUCCESS ) |
---|
1295 | { |
---|
1296 | printk("\n[ERROR] in %s : for command TX_CONNECT / socket[%x,%d] / thread[%x,%x]\n", |
---|
1297 | __FUNCTION__, pid, fdid, pid, trdid ); |
---|
1298 | return -1; |
---|
1299 | } |
---|
1300 | else |
---|
1301 | { |
---|
1302 | |
---|
1303 | #if DEBUG_SOCKET_CONNECT |
---|
1304 | cycle = (uint32_t)hal_get_cycles(); |
---|
1305 | if( DEBUG_SOCKET_CONNECT < cycle ) |
---|
1306 | printk("\n[%s] thread[%x,%x] exit for socket[%x,%d] / %s / cycle %d \n", |
---|
1307 | __FUNCTION__, pid, trdid, pid, fdid, socket_state_str(socket_state),cycle ); |
---|
1308 | #endif |
---|
1309 | return 0; |
---|
1310 | } |
---|
1311 | } // end TCP |
---|
1312 | |
---|
1313 | } // end socket_connect() |
---|
1314 | |
---|
1315 | /////////////////////////////////// |
---|
1316 | int socket_close( xptr_t file_xp, |
---|
1317 | uint32_t fdid ) |
---|
1318 | { |
---|
1319 | uint32_t socket_type; |
---|
1320 | uint32_t socket_state; |
---|
1321 | uint32_t nic_channel; |
---|
1322 | uint32_t cmd_status; // socket.tx_sts |
---|
1323 | bool_t cmd_valid; // socket.tx_valid |
---|
1324 | thread_t * tx_server_ptr; // local pointer on NIC_TX server thread |
---|
1325 | xptr_t tx_server_xp; // extended pointer on NIC_TX server thread |
---|
1326 | xptr_t socket_lock_xp; // extended pointer on socket lock |
---|
1327 | |
---|
1328 | thread_t * this = CURRENT_THREAD; |
---|
1329 | xptr_t client_xp = XPTR( local_cxy , this ); |
---|
1330 | process_t * process = this->process; |
---|
1331 | |
---|
1332 | // get pointer on socket descriptor |
---|
1333 | cxy_t file_cxy = GET_CXY( file_xp ); |
---|
1334 | vfs_file_t * file_ptr = GET_PTR( file_xp ); |
---|
1335 | socket_t * socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
1336 | |
---|
1337 | assert( (hal_remote_l32( XPTR( file_cxy , &socket_ptr->fdid )) == fdid), |
---|
1338 | "unconsistent file_xp & fdid arguments"); |
---|
1339 | |
---|
1340 | #if DEBUG_SOCKET_CLOSE |
---|
1341 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1342 | pid_t pid = this->process->pid; |
---|
1343 | if (DEBUG_SOCKET_CLOSE < cycle ) |
---|
1344 | printk("\n[%s] thread[%x,%x] enters for socket[%x,%d] / cycle %d\n", |
---|
1345 | __FUNCTION__, pid, this->trdid, pid, fdid, cycle ); |
---|
1346 | #endif |
---|
1347 | |
---|
1348 | // build extended pointer on lock protecting socket |
---|
1349 | socket_lock_xp = XPTR( file_cxy , &socket_ptr->lock ); |
---|
1350 | |
---|
1351 | // take socket lock |
---|
1352 | remote_queuelock_acquire( socket_lock_xp ); |
---|
1353 | |
---|
1354 | // check no previous TX command |
---|
1355 | if( (hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid )) == true) || |
---|
1356 | (hal_remote_l64( XPTR( file_cxy , &socket_ptr->tx_client)) != XPTR_NULL) ) |
---|
1357 | { |
---|
1358 | // release socket lock |
---|
1359 | remote_queuelock_release( socket_lock_xp ); |
---|
1360 | |
---|
1361 | printk("\n[ERROR] in %s : previous TX cmd on socket[%x,%d] / thread[%x,%x]\n", |
---|
1362 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
1363 | return -1; |
---|
1364 | } |
---|
1365 | |
---|
1366 | // get relevant socket infos |
---|
1367 | socket_type = hal_remote_l32( XPTR( file_cxy , &socket_ptr->type )); |
---|
1368 | nic_channel = hal_remote_l32( XPTR( file_cxy , &socket_ptr->nic_channel )); |
---|
1369 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state )); |
---|
1370 | |
---|
1371 | |
---|
1372 | // the actual close mechanism depends on socket type and state: |
---|
1373 | // UDP or TCP not connected : client thread directly destroy the socket descriptor |
---|
1374 | // TCP connected : client thread request TX server thread to make the TCP close handshake |
---|
1375 | |
---|
1376 | if( socket_type == SOCK_DGRAM ) // UDP |
---|
1377 | { |
---|
1378 | |
---|
1379 | #if DEBUG_SOCKET_CLOSE |
---|
1380 | cycle = (uint32_t)hal_get_cycles(); |
---|
1381 | if( cycle > DEBUG_DEV_NIC_TX ) |
---|
1382 | printk("\n[%s] thread[%x,%x] socket[%x,%d] %s / destroy socket / cycle %d\n", |
---|
1383 | __FUNCTION__, this->process->pid, this->trdid, pid, fdid, |
---|
1384 | socket_state_str( socket_state ), cycle ); |
---|
1385 | #endif |
---|
1386 | // directly destroy socket |
---|
1387 | socket_destroy( file_xp ); |
---|
1388 | |
---|
1389 | return 0; |
---|
1390 | } |
---|
1391 | else if( (socket_state == TCP_STATE_BOUND) || |
---|
1392 | (socket_state == TCP_STATE_LISTEN) || |
---|
1393 | (socket_state == TCP_STATE_SYN_SENT) ) // TCP not connected |
---|
1394 | { |
---|
1395 | |
---|
1396 | #if DEBUG_SOCKET_CLOSE |
---|
1397 | cycle = (uint32_t)hal_get_cycles(); |
---|
1398 | if( cycle > DEBUG_DEV_NIC_TX ) |
---|
1399 | printk("\n[%s] thread[%x,%x] socket[%x,%d] %s / destroy socket / cycle %d\n", |
---|
1400 | __FUNCTION__, this->process->pid, this->trdid, pid, fdid, |
---|
1401 | socket_state_str( socket_state ), cycle ); |
---|
1402 | #endif |
---|
1403 | // directly destroy socket |
---|
1404 | socket_destroy( file_xp ); |
---|
1405 | |
---|
1406 | return 0; |
---|
1407 | } |
---|
1408 | else // TCP connected |
---|
1409 | { |
---|
1410 | // get pointers on NIC_TX[index] chdev |
---|
1411 | xptr_t tx_chdev_xp = chdev_dir.nic_tx[nic_channel]; |
---|
1412 | chdev_t * tx_chdev_ptr = GET_PTR( tx_chdev_xp ); |
---|
1413 | cxy_t tx_chdev_cxy = GET_CXY( tx_chdev_xp ); |
---|
1414 | |
---|
1415 | // get pointers on NIC_TX[channel] server thread |
---|
1416 | tx_server_ptr = hal_remote_lpt( XPTR( tx_chdev_cxy , &tx_chdev_ptr->server )); |
---|
1417 | tx_server_xp = XPTR( tx_chdev_cxy , tx_server_ptr ); |
---|
1418 | |
---|
1419 | // register command arguments in socket descriptor |
---|
1420 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_cmd ), CMD_TX_CLOSE ); |
---|
1421 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->tx_client ), client_xp ); |
---|
1422 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_valid ), true ); |
---|
1423 | |
---|
1424 | // unblock NIC_TX server thread |
---|
1425 | thread_unblock( tx_server_xp , THREAD_BLOCKED_CLIENT ); |
---|
1426 | |
---|
1427 | // release socket lock |
---|
1428 | remote_queuelock_release( socket_lock_xp ); |
---|
1429 | |
---|
1430 | #if DEBUG_SOCKET_CLOSE |
---|
1431 | cycle = (uint32_t)hal_get_cycles(); |
---|
1432 | if( DEBUG_SOCKET_CLOSE < cycle ) |
---|
1433 | printk("\n[%s] thread[%x,%x] socket[%x,%d] blocks on <IO> waiting close / cycle %d \n", |
---|
1434 | __FUNCTION__, pid, this->trdid, pid, fdid, cycle ); |
---|
1435 | #endif |
---|
1436 | // block itself and deschedule |
---|
1437 | thread_block( client_xp , THREAD_BLOCKED_IO ); |
---|
1438 | sched_yield( "blocked in close" ); |
---|
1439 | |
---|
1440 | #if DEBUG_SOCKET_CLOSE |
---|
1441 | cycle = (uint32_t)hal_get_cycles(); |
---|
1442 | if( DEBUG_SOCKET_CLOSE < cycle ) |
---|
1443 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / resumes / cycle %d \n", |
---|
1444 | __FUNCTION__, pid, this->trdid, pid, fdid, cycle ); |
---|
1445 | #endif |
---|
1446 | // take socket lock |
---|
1447 | remote_queuelock_acquire( socket_lock_xp ); |
---|
1448 | |
---|
1449 | // get socket state & command status |
---|
1450 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state ) ); |
---|
1451 | cmd_status = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_sts) ); |
---|
1452 | cmd_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid ) ); |
---|
1453 | |
---|
1454 | assert( (((socket_state == TCP_STATE_CLOSED) || (cmd_status != CMD_STS_SUCCESS)) |
---|
1455 | && (cmd_valid == false)), |
---|
1456 | "illegal socket state when client thread resumes after TX_CLOSE\n" |
---|
1457 | " socket_state = %s / cmd_status = %d / cmd_valid = %d\n", |
---|
1458 | socket_state_str(socket_state), cmd_status, cmd_valid ); |
---|
1459 | |
---|
1460 | // reset socket.tx_client |
---|
1461 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_client ) , XPTR_NULL ); |
---|
1462 | |
---|
1463 | if( cmd_status != CMD_STS_SUCCESS ) // error reported |
---|
1464 | { |
---|
1465 | printk("\n[ERROR] in %s for command TX_CLOSE / socket[%x,%d] / thread[%x,%x]\n", |
---|
1466 | __FUNCTION__, pid, fdid, pid, this->trdid ); |
---|
1467 | return -1; |
---|
1468 | } |
---|
1469 | else // success |
---|
1470 | { |
---|
1471 | |
---|
1472 | #if DEBUG_SOCKET_CLOSE |
---|
1473 | cycle = (uint32_t)hal_get_cycles(); |
---|
1474 | if( DEBUG_SOCKET_CLOSE < cycle ) |
---|
1475 | printk("\n[%s] thread[%x,%x] socket[%x,%d] / destroy socket / cycle %d\n", |
---|
1476 | __FUNCTION__, pid, this->trdid, pid, fdid, socket_state_str(socket_state) , cycle ); |
---|
1477 | #endif |
---|
1478 | // destroy socket |
---|
1479 | socket_destroy( file_xp ); |
---|
1480 | |
---|
1481 | return 0; |
---|
1482 | } |
---|
1483 | } // end if TCP |
---|
1484 | } // end socket_close() |
---|
1485 | |
---|
1486 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
1487 | // This static and blocking function is executed by an user thread calling one of the |
---|
1488 | // four functions: socket_send() / socket_recv() / socket_sendto() / socket_recvfrom() |
---|
1489 | // It can be used for both UDP and TCP sockets. |
---|
1490 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
1491 | // @ is_send : send when true / receive when false. |
---|
1492 | // @ fdid : socket identifier. |
---|
1493 | // @ u_buf : pointer on user buffer in user space. |
---|
1494 | // @ length : number of bytes. |
---|
1495 | // @ explicit : explicit remote IP address and port when true. |
---|
1496 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
1497 | // Implementation note : The behavior is different for SEND & RECV |
---|
1498 | // - For a SEND, the client thread checks that there is no TX command registered |
---|
1499 | // in the socket. It registers the command arguments in the socket descriptor |
---|
1500 | // (tx_client, tx_cmd, tx_buf, tx_len). Then the client thread unblocks the |
---|
1501 | // TX server thread from the BLOCKED_CLIENT condition, blocks itself on the |
---|
1502 | // BLOCKED_IO condition, and deschedules. It is unblocked by the TX server thread |
---|
1503 | // when the last byte has been sent (for UDP) or acknowledged (for TCP). |
---|
1504 | // When the client thread resumes, it reset the command in socket, and returns. |
---|
1505 | // - For a RECV, the client thread checks that there is no RX command registered |
---|
1506 | // in the socket. It registers itself in socket (rx_client). It checks the status |
---|
1507 | // of the receive buffer. It the rx_buf is empty, it blocks on the BLOCKED_IO |
---|
1508 | // condition, and deschedules. It is unblocked by the RX server thread when an UDP |
---|
1509 | // packet or TCP segment has been writen in the rx_buf. When it resumes, it moves |
---|
1510 | // the available data from the rx_buf to the user buffer, reset its registration |
---|
1511 | // in socket (reset the rx_buf for an UDP socket), and returns. |
---|
1512 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
1513 | int socket_move_data( bool_t is_send, |
---|
1514 | uint32_t fdid, |
---|
1515 | uint8_t * u_buf, |
---|
1516 | uint32_t length, |
---|
1517 | bool_t explicit, |
---|
1518 | uint32_t explicit_addr, |
---|
1519 | uint32_t explicit_port ) |
---|
1520 | { |
---|
1521 | vfs_inode_type_t file_type; // file descriptor type |
---|
1522 | socket_t * socket_ptr; // local pointer on socket descriptor |
---|
1523 | uint32_t socket_state; // current socket state |
---|
1524 | uint32_t socket_type; // socket type (UDP/TCP) |
---|
1525 | uint32_t nic_channel; // NIC channel for this socket |
---|
1526 | xptr_t socket_lock_xp; // extended pointer on socket lock |
---|
1527 | xptr_t file_xp; // extended pointer on file descriptor |
---|
1528 | vfs_file_t * file_ptr; |
---|
1529 | cxy_t file_cxy; |
---|
1530 | xptr_t chdev_xp; // extended pointer on NIC_TX[channel] chdev |
---|
1531 | chdev_t * chdev_ptr; |
---|
1532 | cxy_t chdev_cxy; |
---|
1533 | uint32_t remote_addr; |
---|
1534 | uint32_t remote_port; |
---|
1535 | uint32_t buf_status; // number of bytes in rx_buf |
---|
1536 | int32_t moved_bytes; // total number of moved bytes (fot return) |
---|
1537 | xptr_t server_xp; // extended pointer on NIC_TX / NIC_RX server thread |
---|
1538 | thread_t * server_ptr; // local pointer on NIC_TX / NIC_RX server thread |
---|
1539 | kmem_req_t req; // KCM request for TX kernel buffer |
---|
1540 | uint8_t * tx_buf; // kernel buffer for TX transfer |
---|
1541 | bool_t cmd_valid; // from socket descriptor |
---|
1542 | uint32_t cmd_status; // from socket descriptor |
---|
1543 | uint32_t tx_todo; // from socket descriptor |
---|
1544 | |
---|
1545 | thread_t * this = CURRENT_THREAD; |
---|
1546 | process_t * process = this->process; |
---|
1547 | |
---|
1548 | // build extended pointer on client thread |
---|
1549 | xptr_t client_xp = XPTR( local_cxy , this ); |
---|
1550 | |
---|
1551 | // get pointers on file descriptor identifying the socket |
---|
1552 | file_xp = process_fd_get_xptr_from_local( process , fdid ); |
---|
1553 | file_ptr = GET_PTR( file_xp ); |
---|
1554 | file_cxy = GET_CXY( file_xp ); |
---|
1555 | |
---|
1556 | if( file_xp == XPTR_NULL ) |
---|
1557 | { |
---|
1558 | printk("\n[ERROR] in %s : undefined fdid %d / thread%x,%x]\n", |
---|
1559 | __FUNCTION__, fdid , process->pid, this->trdid ); |
---|
1560 | return -1; |
---|
1561 | } |
---|
1562 | |
---|
1563 | // get file type and socket pointer |
---|
1564 | file_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) ); |
---|
1565 | |
---|
1566 | // get local pointer on socket |
---|
1567 | socket_ptr = hal_remote_lpt( XPTR( file_cxy , &file_ptr->socket ) ); |
---|
1568 | |
---|
1569 | // check file descriptor type |
---|
1570 | if( file_type != INODE_TYPE_SOCK ) |
---|
1571 | { |
---|
1572 | printk("\n[ERROR] in %s : illegal file type %s / socket[%x,%d]\n", |
---|
1573 | __FUNCTION__, vfs_inode_type_str(file_type), process->pid, fdid ); |
---|
1574 | return -1; |
---|
1575 | } |
---|
1576 | |
---|
1577 | // build extended pointer on lock protecting socket |
---|
1578 | socket_lock_xp = XPTR( file_cxy , &socket_ptr->lock ); |
---|
1579 | |
---|
1580 | // take the socket lock |
---|
1581 | remote_queuelock_acquire( socket_lock_xp ); |
---|
1582 | |
---|
1583 | // get socket type, state, and channel |
---|
1584 | socket_type = hal_remote_l32( XPTR( file_cxy , &socket_ptr->type )); |
---|
1585 | socket_state = hal_remote_l32( XPTR( file_cxy , &socket_ptr->state )); |
---|
1586 | nic_channel = hal_remote_l32( XPTR( file_cxy , &socket_ptr->nic_channel )); |
---|
1587 | |
---|
1588 | // handle the explicit remote address and port |
---|
1589 | if( socket_type == SOCK_DGRAM ) // UDP socket |
---|
1590 | { |
---|
1591 | if( socket_state == UDP_STATE_UNBOUND ) |
---|
1592 | { |
---|
1593 | // release socket lock |
---|
1594 | remote_queuelock_release( socket_lock_xp ); |
---|
1595 | |
---|
1596 | printk("\n[ERROR] in %s : SEND/RECV for socket[%x,%d] in state %s\n", |
---|
1597 | __FUNCTION__, process->pid, fdid, socket_state_str(socket_state) ); |
---|
1598 | return -1; |
---|
1599 | } |
---|
1600 | |
---|
1601 | if( explicit ) |
---|
1602 | { |
---|
1603 | // update remote IP address and port into socket descriptor |
---|
1604 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->remote_addr ), explicit_addr ); |
---|
1605 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->remote_port ), explicit_port ); |
---|
1606 | |
---|
1607 | // update socket state if required |
---|
1608 | if( socket_state == UDP_STATE_BOUND ) |
---|
1609 | { |
---|
1610 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->state ), UDP_STATE_ESTAB ); |
---|
1611 | } |
---|
1612 | } |
---|
1613 | } |
---|
1614 | else // TCP socket |
---|
1615 | { |
---|
1616 | if( explicit ) |
---|
1617 | { |
---|
1618 | // get remote IP address and port from socket descriptor |
---|
1619 | remote_addr = hal_remote_l32( XPTR( file_cxy , &socket_ptr->remote_addr )); |
---|
1620 | remote_port = hal_remote_l32( XPTR( file_cxy , &socket_ptr->remote_port )); |
---|
1621 | |
---|
1622 | if( (remote_addr != explicit_addr) || (remote_port != explicit_port) ) |
---|
1623 | { |
---|
1624 | // release socket lock |
---|
1625 | remote_queuelock_release( socket_lock_xp ); |
---|
1626 | |
---|
1627 | printk("\n[ERROR] in %s : wrong expliciy access for socket[%x,%d]\n", |
---|
1628 | __FUNCTION__, process->pid, fdid ); |
---|
1629 | return -1; |
---|
1630 | } |
---|
1631 | } |
---|
1632 | } |
---|
1633 | |
---|
1634 | /////////////////////////////////////////////////////// |
---|
1635 | if( is_send ) // TX_SEND command |
---|
1636 | { |
---|
1637 | |
---|
1638 | #if DEBUG_SOCKET_SEND |
---|
1639 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1640 | if (DEBUG_SOCKET_SEND < cycle ) |
---|
1641 | printk("\n[%s] thread[%x,%x] received SEND command for socket[%x,%d] / length %d / cycle %d\n", |
---|
1642 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, length, cycle ); |
---|
1643 | #endif |
---|
1644 | // check no previous TX command |
---|
1645 | if( (hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid )) == true) || |
---|
1646 | (hal_remote_l64( XPTR( file_cxy , &socket_ptr->tx_client)) != XPTR_NULL) ) |
---|
1647 | { |
---|
1648 | // release socket lock |
---|
1649 | remote_queuelock_release( socket_lock_xp ); |
---|
1650 | |
---|
1651 | printk("\n[ERROR] in %s : previous TX command / socket[%x,%d] / thread[%x,%x]\n", |
---|
1652 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
1653 | return -1; |
---|
1654 | } |
---|
1655 | |
---|
1656 | // allocate a temporary kernel buffer |
---|
1657 | req.type = KMEM_KCM; |
---|
1658 | req.order = bits_log2( length ); |
---|
1659 | req.flags = AF_NONE; |
---|
1660 | tx_buf = kmem_alloc( &req ); |
---|
1661 | |
---|
1662 | if( tx_buf == NULL ) |
---|
1663 | { |
---|
1664 | // release socket lock |
---|
1665 | remote_queuelock_release( socket_lock_xp ); |
---|
1666 | |
---|
1667 | printk("\n[ERROR] in %s : no memory for tx_buf / socket[%x,%d] / thread[%x,%x]\n", |
---|
1668 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
1669 | return -1; |
---|
1670 | } |
---|
1671 | |
---|
1672 | // copy data from user u_buf to kernel tx_buf |
---|
1673 | hal_copy_from_uspace( XPTR( local_cxy , tx_buf ), |
---|
1674 | u_buf, |
---|
1675 | length ); |
---|
1676 | |
---|
1677 | // register command in socket descriptor |
---|
1678 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->tx_client ) , client_xp ); |
---|
1679 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_cmd ) , CMD_TX_SEND ); |
---|
1680 | hal_remote_spt( XPTR( file_cxy , &socket_ptr->tx_buf ) , tx_buf ); |
---|
1681 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_len ) , length ); |
---|
1682 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_todo ) , length ); |
---|
1683 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->tx_valid ) , true ); |
---|
1684 | |
---|
1685 | // release socket lock |
---|
1686 | remote_queuelock_release( socket_lock_xp ); |
---|
1687 | |
---|
1688 | // get pointers on relevant chdev |
---|
1689 | chdev_xp = chdev_dir.nic_tx[nic_channel]; |
---|
1690 | chdev_ptr = GET_PTR( chdev_xp ); |
---|
1691 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
1692 | |
---|
1693 | // get pointers on NIC_TX[channel] server thread |
---|
1694 | server_ptr = hal_remote_lpt( XPTR( chdev_cxy , &chdev_ptr->server )); |
---|
1695 | server_xp = XPTR( chdev_cxy , server_ptr ); |
---|
1696 | |
---|
1697 | // unblocks the NIC_TX server thread |
---|
1698 | thread_unblock( server_xp , THREAD_BLOCKED_CLIENT ); |
---|
1699 | |
---|
1700 | #if DEBUG_SOCKET_SEND |
---|
1701 | cycle = (uint32_t)hal_get_cycles(); |
---|
1702 | if( DEBUG_SOCKET_SEND < cycle ) |
---|
1703 | printk("\n[%s] thread[%x,%x] socket[%x,%d] register SEND => blocks on <IO> / cycle %d\n", |
---|
1704 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1705 | #endif |
---|
1706 | // client thread blocks itself and deschedules |
---|
1707 | thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_IO ); |
---|
1708 | sched_yield( "blocked in nic_io" ); |
---|
1709 | |
---|
1710 | #if DEBUG_SOCKET_SEND |
---|
1711 | cycle = (uint32_t)hal_get_cycles(); |
---|
1712 | if( DEBUG_SOCKET_SEND < cycle ) |
---|
1713 | printk("\n[%s] thread[%x,%x] socket[%x,%d] for SEND resumes / cycle %d\n", |
---|
1714 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1715 | #endif |
---|
1716 | // take socket lock |
---|
1717 | remote_queuelock_acquire( socket_lock_xp ); |
---|
1718 | |
---|
1719 | // get tx_valid, tx_todo, and tx_sts |
---|
1720 | tx_todo = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_todo )); |
---|
1721 | cmd_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_valid )); |
---|
1722 | cmd_status = hal_remote_l32( XPTR( file_cxy , &socket_ptr->tx_sts )); |
---|
1723 | |
---|
1724 | // reset tx_client in socket descriptor |
---|
1725 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->tx_client ) , XPTR_NULL ); |
---|
1726 | |
---|
1727 | // release socket lock |
---|
1728 | remote_queuelock_release( socket_lock_xp ); |
---|
1729 | |
---|
1730 | // check SEND command completed when TX client thread resumes |
---|
1731 | assert( (((tx_todo == 0) || (cmd_status != CMD_STS_SUCCESS)) && (cmd_valid == false)), |
---|
1732 | "illegal socket state when client thread resumes after TX_SEND\n" |
---|
1733 | " tx_todo = %d / tx_status = %d / tx_valid = %d\n", |
---|
1734 | tx_todo, cmd_status, cmd_valid ); |
---|
1735 | |
---|
1736 | // release the tx_buf |
---|
1737 | req.ptr = tx_buf; |
---|
1738 | kmem_free( &req ); |
---|
1739 | |
---|
1740 | if( cmd_status != CMD_STS_SUCCESS ) |
---|
1741 | { |
---|
1742 | |
---|
1743 | #if DEBUG_SOCKET_SEND |
---|
1744 | cycle = (uint32_t)hal_get_cycles(); |
---|
1745 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1746 | printk("\n[%s] error %s for TX_SEND / socket[%x,%d] / thread[%x,%x]\n", |
---|
1747 | __FUNCTION__, socket_cmd_sts_str(cmd_status), process->pid, fdid, process->pid, this->trdid ); |
---|
1748 | #endif |
---|
1749 | return -1; |
---|
1750 | } |
---|
1751 | else |
---|
1752 | { |
---|
1753 | |
---|
1754 | #if DEBUG_SOCKET_SEND |
---|
1755 | cycle = (uint32_t)hal_get_cycles(); |
---|
1756 | if (DEBUG_SOCKET_SEND < cycle ) |
---|
1757 | printk("\n[%s] thread[%x,%x] success for SEND / socket[%x,%d] / length %d / cycle %d\n", |
---|
1758 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, length, cycle ); |
---|
1759 | #endif |
---|
1760 | return length; |
---|
1761 | } |
---|
1762 | |
---|
1763 | } // end TX_SEND command |
---|
1764 | |
---|
1765 | //////////////////////////////////////////////////////// |
---|
1766 | else // RX_RECV command |
---|
1767 | { |
---|
1768 | |
---|
1769 | #if DEBUG_SOCKET_RECV |
---|
1770 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1771 | if (DEBUG_SOCKET_SEND < cycle ) |
---|
1772 | printk("\n[%s] thread[%x,%x] received RECV command for socket[%x,%d] / length %d / cycle %d\n", |
---|
1773 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, length, cycle ); |
---|
1774 | #endif |
---|
1775 | // check no previous RX command |
---|
1776 | if( (hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_valid )) == true) || |
---|
1777 | (hal_remote_l64( XPTR( file_cxy , &socket_ptr->rx_client)) != XPTR_NULL) ) |
---|
1778 | { |
---|
1779 | // release socket lock |
---|
1780 | remote_queuelock_release( socket_lock_xp ); |
---|
1781 | |
---|
1782 | printk("\n[ERROR] in %s : previous RX command on socket[%x,%d] / thread[%x,%x]\n", |
---|
1783 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
1784 | return -1; |
---|
1785 | } |
---|
1786 | |
---|
1787 | // return EOF for a TCP socket not in ESTAB state |
---|
1788 | if( (socket_type == SOCK_STREAM ) && (socket_state != TCP_STATE_ESTAB) ) |
---|
1789 | { |
---|
1790 | // release socket lock |
---|
1791 | remote_queuelock_release( socket_lock_xp ); |
---|
1792 | |
---|
1793 | #if DEBUG_SOCKET_RECV |
---|
1794 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1795 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1796 | printk("\n[%s] thread[%x,%x] socket[%x,%d] TCP connection closed / cycle %d\n", |
---|
1797 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1798 | #endif |
---|
1799 | return 0; |
---|
1800 | } |
---|
1801 | // build extended pointer on socket.rx_buf |
---|
1802 | xptr_t rx_buf_xp = XPTR( file_cxy , &socket_ptr->rx_buf ); |
---|
1803 | |
---|
1804 | // get rx_buf status |
---|
1805 | buf_status = remote_buf_status( rx_buf_xp ); |
---|
1806 | |
---|
1807 | if( buf_status == 0 ) |
---|
1808 | { |
---|
1809 | // registers RX_RECV command in socket descriptor |
---|
1810 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_cmd ) , CMD_RX_RECV ); |
---|
1811 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->rx_client ) , client_xp ); |
---|
1812 | hal_remote_s32( XPTR( file_cxy , &socket_ptr->rx_valid ) , true ); |
---|
1813 | |
---|
1814 | // release socket lock |
---|
1815 | remote_queuelock_release( socket_lock_xp ); |
---|
1816 | |
---|
1817 | #if DEBUG_SOCKET_RECV |
---|
1818 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
1819 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1820 | printk("\n[%s] thread[%x,%x] socket[%x,%d] rx_buf empty => blocks on <IO> / cycle %d\n", |
---|
1821 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1822 | #endif |
---|
1823 | // client thread blocks itself and deschedules |
---|
1824 | thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_IO ); |
---|
1825 | sched_yield( "blocked in nic_io" ); |
---|
1826 | |
---|
1827 | #if DEBUG_SOCKET_RECV |
---|
1828 | cycle = (uint32_t)hal_get_cycles(); |
---|
1829 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1830 | printk("\n[%s] thread[%x,%x] socket[%x,%d] for RECV resumes / cycle %d\n", |
---|
1831 | __FUNCTION__, process->pid, this->trdid, process->pid, fdid, cycle ); |
---|
1832 | #endif |
---|
1833 | // take socket lock |
---|
1834 | remote_queuelock_acquire( socket_lock_xp ); |
---|
1835 | |
---|
1836 | // get rx_sts and rx_buf status |
---|
1837 | cmd_valid = hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_valid )); |
---|
1838 | cmd_status = hal_remote_l32( XPTR( file_cxy , &socket_ptr->rx_sts )); |
---|
1839 | buf_status = remote_buf_status( rx_buf_xp ); |
---|
1840 | |
---|
1841 | assert( (((buf_status != 0) || (cmd_status != CMD_STS_SUCCESS)) && (cmd_valid == false)), |
---|
1842 | "illegal socket state when client thread resumes after RX_RECV\n" |
---|
1843 | " buf_status = %d / rx_sts = %d / rx_valid = %d\n", |
---|
1844 | buf_status , cmd_status , cmd_valid ); |
---|
1845 | |
---|
1846 | // reset rx_client in socket descriptor |
---|
1847 | hal_remote_s64( XPTR( file_cxy , &socket_ptr->rx_client ) , XPTR_NULL ); |
---|
1848 | |
---|
1849 | // reset rx_buf for an UDP socket |
---|
1850 | if( socket_type == SOCK_DGRAM ) remote_buf_reset( rx_buf_xp ); |
---|
1851 | |
---|
1852 | // release socket lock |
---|
1853 | remote_queuelock_release( socket_lock_xp ); |
---|
1854 | |
---|
1855 | if( cmd_status == CMD_STS_EOF ) // EOF (remote close) reported |
---|
1856 | { |
---|
1857 | |
---|
1858 | #if DEBUG_SOCKET_RECV |
---|
1859 | cycle = (uint32_t)hal_get_cycles(); |
---|
1860 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1861 | printk("\n[%s] EOF for RX_RECV / socket[%x,%d] / thread[%x,%x]\n", |
---|
1862 | __FUNCTION__, process->pid, fdid, process->pid, this->trdid ); |
---|
1863 | #endif |
---|
1864 | return 0; |
---|
1865 | } |
---|
1866 | else if( cmd_status != CMD_STS_SUCCESS ) // other error reported |
---|
1867 | { |
---|
1868 | |
---|
1869 | #if DEBUG_SOCKET_RECV |
---|
1870 | cycle = (uint32_t)hal_get_cycles(); |
---|
1871 | if( DEBUG_SOCKET_RECV < cycle ) |
---|
1872 | printk("\n[%s] error %s for RX_RECV / socket[%x,%d] / thread[%x,%x]\n", |
---|
1873 | __FUNCTION__, socket_cmd_sts_str(cmd_status), process->pid, fdid, process->pid, this->trdid ); |
---|
1874 | #endif |
---|
1875 | |
---|