change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/net/rxrpc/peer_object.c
..
..
@@ -1,12 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /* RxRPC remote transport endpoint record management
2
3
  *
3
4
  * Copyright (C) 2007, 2016 Red Hat, Inc. All Rights Reserved.
4
5
  * Written by David Howells (dhowells@redhat.com)
5
- *
6
- * This program is free software; you can redistribute it and/or
7
- * modify it under the terms of the GNU General Public License
8
- * as published by the Free Software Foundation; either version
9
- * 2 of the License, or (at your option) any later version.
10
6
  */
11
7
 
12
8
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
..
..
@@ -125,7 +121,7 @@
125
121
 
126
122
 	hash_for_each_possible_rcu(rxnet->peer_hash, peer, hash_link, hash_key) {
127
123
 		if (rxrpc_peer_cmp_key(peer, local, srx, hash_key) == 0 &&
128
-		    atomic_read(&peer->usage) > 0)
124
+		    refcount_read(&peer->ref) > 0)
129
125
 			return peer;
130
126
 	}
131
127
 
..
..
@@ -144,7 +140,7 @@
144
140
 	peer = __rxrpc_lookup_peer_rcu(local, srx, hash_key);
145
141
 	if (peer) {
146
142
 		_net("PEER %d {%pISp}", peer->debug_id, &peer->srx.transport);
147
-		_leave(" = %p {u=%d}", peer, atomic_read(&peer->usage));
143
+		_leave(" = %p {u=%d}", peer, refcount_read(&peer->ref));
148
144
 	}
149
145
 	return peer;
150
146
 }
..
..
@@ -213,13 +209,14 @@
213
209
  */
214
210
 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp)
215
211
 {
212
+	const void *here = __builtin_return_address(0);
216
213
 	struct rxrpc_peer *peer;
217
214
 
218
215
 	_enter("");
219
216
 
220
217
 	peer = kzalloc(sizeof(struct rxrpc_peer), gfp);
221
218
 	if (peer) {
222
-		atomic_set(&peer->usage, 1);
219
+		refcount_set(&peer->ref, 1);
223
220
 		peer->local = rxrpc_get_local(local);
224
221
 		INIT_HLIST_HEAD(&peer->error_targets);
225
222
 		peer->service_conns = RB_ROOT;
..
..
@@ -228,12 +225,15 @@
228
225
 		spin_lock_init(&peer->rtt_input_lock);
229
226
 		peer->debug_id = atomic_inc_return(&rxrpc_debug_id);
230
227
 
228
+		rxrpc_peer_init_rtt(peer);
229
+
231
230
 		if (RXRPC_TX_SMSS > 2190)
232
231
 			peer->cong_cwnd = 2;
233
232
 		else if (RXRPC_TX_SMSS > 1095)
234
233
 			peer->cong_cwnd = 3;
235
234
 		else
236
235
 			peer->cong_cwnd = 4;
236
+		trace_rxrpc_peer(peer->debug_id, rxrpc_peer_new, 1, here);
237
237
 	}
238
238
 
239
239
 	_leave(" = %p", peer);
..
..
@@ -378,7 +378,7 @@
378
378
 
379
379
 	_net("PEER %d {%pISp}", peer->debug_id, &peer->srx.transport);
380
380
 
381
-	_leave(" = %p {u=%d}", peer, atomic_read(&peer->usage));
381
+	_leave(" = %p {u=%d}", peer, refcount_read(&peer->ref));
382
382
 	return peer;
383
383
 }
384
384
 
..
..
@@ -388,10 +388,10 @@
388
388
 struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer)
389
389
 {
390
390
 	const void *here = __builtin_return_address(0);
391
-	int n;
391
+	int r;
392
392
 
393
-	n = atomic_inc_return(&peer->usage);
394
-	trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, n, here);
393
+	__refcount_inc(&peer->ref, &r);
394
+	trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, r + 1, here);
395
395
 	return peer;
396
396
 }
397
397
 
..
..
@@ -401,11 +401,11 @@
401
401
 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer)
402
402
 {
403
403
 	const void *here = __builtin_return_address(0);
404
+	int r;
404
405
 
405
406
 	if (peer) {
406
-		int n = atomic_fetch_add_unless(&peer->usage, 1, 0);
407
-		if (n > 0)
408
-			trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, n + 1, here);
407
+		if (__refcount_inc_not_zero(&peer->ref, &r))
408
+			trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, r + 1, here);
409
409
 		else
410
410
 			peer = NULL;
411
411
 	}
..
..
@@ -436,13 +436,14 @@
436
436
 {
437
437
 	const void *here = __builtin_return_address(0);
438
438
 	unsigned int debug_id;
439
-	int n;
439
+	bool dead;
440
+	int r;
440
441
 
441
442
 	if (peer) {
442
443
 		debug_id = peer->debug_id;
443
-		n = atomic_dec_return(&peer->usage);
444
-		trace_rxrpc_peer(debug_id, rxrpc_peer_put, n, here);
445
-		if (n == 0)
444
+		dead = __refcount_dec_and_test(&peer->ref, &r);
445
+		trace_rxrpc_peer(debug_id, rxrpc_peer_put, r - 1, here);
446
+		if (dead)
446
447
 			__rxrpc_put_peer(peer);
447
448
 	}
448
449
 }
..
..
@@ -455,11 +456,12 @@
455
456
 {
456
457
 	const void *here = __builtin_return_address(0);
457
458
 	unsigned int debug_id = peer->debug_id;
458
-	int n;
459
+	bool dead;
460
+	int r;
459
461
 
460
-	n = atomic_dec_return(&peer->usage);
461
-	trace_rxrpc_peer(debug_id, rxrpc_peer_put, n, here);
462
-	if (n == 0) {
462
+	dead = __refcount_dec_and_test(&peer->ref, &r);
463
+	trace_rxrpc_peer(debug_id, rxrpc_peer_put, r - 1, here);
464
+	if (dead) {
463
465
 		hash_del_rcu(&peer->hash_link);
464
466
 		list_del_init(&peer->keepalive_link);
465
467
 		rxrpc_free_peer(peer);
..
..
@@ -481,7 +483,7 @@
481
483
 		hlist_for_each_entry(peer, &rxnet->peer_hash[i], hash_link) {
482
484
 			pr_err("Leaked peer %u {%u} %pISp\n",
483
485
 			       peer->debug_id,
484
-			       atomic_read(&peer->usage),
486
+			       refcount_read(&peer->ref),
485
487
 			       &peer->srx.transport);
486
488
 		}
487
489
 	}
..
..
@@ -503,14 +505,24 @@
503
505
 EXPORT_SYMBOL(rxrpc_kernel_get_peer);
504
506
 
505
507
 /**
506
- * rxrpc_kernel_get_rtt - Get a call's peer RTT
508
+ * rxrpc_kernel_get_srtt - Get a call's peer smoothed RTT
507
509
  * @sock: The socket on which the call is in progress.
508
510
  * @call: The call to query
511
+ * @_srtt: Where to store the SRTT value.
509
512
  *
510
- * Get the call's peer RTT.
513
+ * Get the call's peer smoothed RTT in uS.
511
514
  */
512
-u64 rxrpc_kernel_get_rtt(struct socket *sock, struct rxrpc_call *call)
515
+bool rxrpc_kernel_get_srtt(struct socket *sock, struct rxrpc_call *call,
516
+			   u32 *_srtt)
513
517
 {
514
-	return call->peer->rtt;
518
+	struct rxrpc_peer *peer = call->peer;
519
+
520
+	if (peer->rtt_count == 0) {
521
+		*_srtt = 1000000; /* 1S */
522
+		return false;
523
+	}
524
+
525
+	*_srtt = call->peer->srtt_us >> 3;
526
+	return true;
515
527
 }
516
-EXPORT_SYMBOL(rxrpc_kernel_get_rtt);
528
+EXPORT_SYMBOL(rxrpc_kernel_get_srtt);