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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
..
..
@@ -1,10 +1,8 @@
1
-/*
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- * aQuantia Corporation Network Driver
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- * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
1
+// SPDX-License-Identifier: GPL-2.0-only
2
+/* Atlantic Network Driver
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3
  *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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+ * Copyright (C) 2014-2019 aQuantia Corporation
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+ * Copyright (C) 2019-2020 Marvell International Ltd.
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6
  */
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7
 
10
8
 /* File aq_vec.c: Definition of common structure for vector of Rx and Tx rings.
..
..
@@ -45,8 +43,11 @@
45
43
 	if (!self) {
46
44
 		err = -EINVAL;
47
45
 	} else {
48
-		for (i = 0U, ring = self->ring[0];
49
-			self->tx_rings > i; ++i, ring = self->ring[i]) {
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+		for (i = 0U; self->tx_rings > i; ++i) {
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+			ring = self->ring[i];
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+			u64_stats_update_begin(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
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+			ring[AQ_VEC_RX_ID].stats.rx.polls++;
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+			u64_stats_update_end(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
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51
 			if (self->aq_hw_ops->hw_ring_tx_head_update) {
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52
 				err = self->aq_hw_ops->hw_ring_tx_head_update(
52
53
 							self->aq_hw,
..
..
@@ -107,15 +108,10 @@
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108
 			      struct aq_nic_cfg_s *aq_nic_cfg)
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109
 {
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110
 	struct aq_vec_s *self = NULL;
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-	struct aq_ring_s *ring = NULL;
111
-	unsigned int i = 0U;
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-	int err = 0;
113
111
 
114
112
 	self = kzalloc(sizeof(*self), GFP_KERNEL);
115
-	if (!self) {
116
-		err = -ENOMEM;
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+	if (!self)
117
114
 		goto err_exit;
118
-	}
119
115
 
120
116
 	self->aq_nic = aq_nic;
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117
 	self->aq_ring_param.vec_idx = idx;
..
..
@@ -131,10 +127,20 @@
131
127
 	netif_napi_add(aq_nic_get_ndev(aq_nic), &self->napi,
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128
 		       aq_vec_poll, AQ_CFG_NAPI_WEIGHT);
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129
 
130
+err_exit:
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+	return self;
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+}
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+
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+int aq_vec_ring_alloc(struct aq_vec_s *self, struct aq_nic_s *aq_nic,
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+		      unsigned int idx, struct aq_nic_cfg_s *aq_nic_cfg)
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+{
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+	struct aq_ring_s *ring = NULL;
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+	unsigned int i = 0U;
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+	int err = 0;
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+
134
141
 	for (i = 0; i < aq_nic_cfg->tcs; ++i) {
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-		unsigned int idx_ring = AQ_NIC_TCVEC2RING(self->nic,
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-						self->tx_rings,
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-						self->aq_ring_param.vec_idx);
142
+		const unsigned int idx_ring = AQ_NIC_CFG_TCVEC2RING(aq_nic_cfg,
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+								    i, idx);
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144
 
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 		ring = aq_ring_tx_alloc(&self->ring[i][AQ_VEC_TX_ID], aq_nic,
140
146
 					idx_ring, aq_nic_cfg);
..
..
@@ -159,10 +165,11 @@
159
165
 
160
166
 err_exit:
161
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 	if (err < 0) {
162
-		aq_vec_free(self);
168
+		aq_vec_ring_free(self);
163
169
 		self = NULL;
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170
 	}
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-	return self;
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+
172
+	return err;
166
173
 }
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174
 
168
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 int aq_vec_init(struct aq_vec_s *self, const struct aq_hw_ops *aq_hw_ops,
..
..
@@ -175,9 +182,9 @@
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182
 	self->aq_hw_ops = aq_hw_ops;
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183
 	self->aq_hw = aq_hw;
177
184
 
178
-	for (i = 0U, ring = self->ring[0];
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-		self->tx_rings > i; ++i, ring = self->ring[i]) {
180
-		err = aq_ring_init(&ring[AQ_VEC_TX_ID]);
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+	for (i = 0U; self->tx_rings > i; ++i) {
186
+		ring = self->ring[i];
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+		err = aq_ring_init(&ring[AQ_VEC_TX_ID], ATL_RING_TX);
181
188
 		if (err < 0)
182
189
 			goto err_exit;
183
190
 
..
..
@@ -187,7 +194,7 @@
187
194
 		if (err < 0)
188
195
 			goto err_exit;
189
196
 
190
-		err = aq_ring_init(&ring[AQ_VEC_RX_ID]);
197
+		err = aq_ring_init(&ring[AQ_VEC_RX_ID], ATL_RING_RX);
191
198
 		if (err < 0)
192
199
 			goto err_exit;
193
200
 
..
..
@@ -217,8 +224,8 @@
217
224
 	unsigned int i = 0U;
218
225
 	int err = 0;
219
226
 
220
-	for (i = 0U, ring = self->ring[0];
221
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
227
+	for (i = 0U; self->tx_rings > i; ++i) {
228
+		ring = self->ring[i];
222
229
 		err = self->aq_hw_ops->hw_ring_tx_start(self->aq_hw,
223
230
 							&ring[AQ_VEC_TX_ID]);
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231
 		if (err < 0)
..
..
@@ -241,8 +248,8 @@
241
248
 	struct aq_ring_s *ring = NULL;
242
249
 	unsigned int i = 0U;
243
250
 
244
-	for (i = 0U, ring = self->ring[0];
245
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
251
+	for (i = 0U; self->tx_rings > i; ++i) {
252
+		ring = self->ring[i];
246
253
 		self->aq_hw_ops->hw_ring_tx_stop(self->aq_hw,
247
254
 						 &ring[AQ_VEC_TX_ID]);
248
255
 
..
..
@@ -261,15 +268,28 @@
261
268
 	if (!self)
262
269
 		goto err_exit;
263
270
 
264
-	for (i = 0U, ring = self->ring[0];
265
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
271
+	for (i = 0U; self->tx_rings > i; ++i) {
272
+		ring = self->ring[i];
266
273
 		aq_ring_tx_clean(&ring[AQ_VEC_TX_ID]);
267
274
 		aq_ring_rx_deinit(&ring[AQ_VEC_RX_ID]);
268
275
 	}
276
+
269
277
 err_exit:;
270
278
 }
271
279
 
272
280
 void aq_vec_free(struct aq_vec_s *self)
281
+{
282
+	if (!self)
283
+		goto err_exit;
284
+
285
+	netif_napi_del(&self->napi);
286
+
287
+	kfree(self);
288
+
289
+err_exit:;
290
+}
291
+
292
+void aq_vec_ring_free(struct aq_vec_s *self)
273
293
 {
274
294
 	struct aq_ring_s *ring = NULL;
275
295
 	unsigned int i = 0U;
..
..
@@ -277,16 +297,15 @@
277
297
 	if (!self)
278
298
 		goto err_exit;
279
299
 
280
-	for (i = 0U, ring = self->ring[0];
281
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
300
+	for (i = 0U; self->tx_rings > i; ++i) {
301
+		ring = self->ring[i];
282
302
 		aq_ring_free(&ring[AQ_VEC_TX_ID]);
283
-		aq_ring_free(&ring[AQ_VEC_RX_ID]);
303
+		if (i < self->rx_rings)
304
+			aq_ring_free(&ring[AQ_VEC_RX_ID]);
284
305
 	}
285
306
 
286
-	netif_napi_del(&self->napi);
287
-
288
-	kfree(self);
289
-
307
+	self->tx_rings = 0;
308
+	self->rx_rings = 0;
290
309
 err_exit:;
291
310
 }
292
311
 
..
..
@@ -334,52 +353,20 @@
334
353
 	return &self->aq_ring_param.affinity_mask;
335
354
 }
336
355
 
337
-void aq_vec_add_stats(struct aq_vec_s *self,
338
-		      struct aq_ring_stats_rx_s *stats_rx,
339
-		      struct aq_ring_stats_tx_s *stats_tx)
356
+bool aq_vec_is_valid_tc(struct aq_vec_s *self, const unsigned int tc)
340
357
 {
341
-	struct aq_ring_s *ring = NULL;
342
-	unsigned int r = 0U;
343
-
344
-	for (r = 0U, ring = self->ring[0];
345
-		self->tx_rings > r; ++r, ring = self->ring[r]) {
346
-		struct aq_ring_stats_tx_s *tx = &ring[AQ_VEC_TX_ID].stats.tx;
347
-		struct aq_ring_stats_rx_s *rx = &ring[AQ_VEC_RX_ID].stats.rx;
348
-
349
-		stats_rx->packets += rx->packets;
350
-		stats_rx->bytes += rx->bytes;
351
-		stats_rx->errors += rx->errors;
352
-		stats_rx->jumbo_packets += rx->jumbo_packets;
353
-		stats_rx->lro_packets += rx->lro_packets;
354
-
355
-		stats_tx->packets += tx->packets;
356
-		stats_tx->bytes += tx->bytes;
357
-		stats_tx->errors += tx->errors;
358
-		stats_tx->queue_restarts += tx->queue_restarts;
359
-	}
358
+	return tc < self->rx_rings && tc < self->tx_rings;
360
359
 }
361
360
 
362
-int aq_vec_get_sw_stats(struct aq_vec_s *self, u64 *data, unsigned int *p_count)
361
+unsigned int aq_vec_get_sw_stats(struct aq_vec_s *self, const unsigned int tc, u64 *data)
363
362
 {
364
-	unsigned int count = 0U;
365
-	struct aq_ring_stats_rx_s stats_rx;
366
-	struct aq_ring_stats_tx_s stats_tx;
363
+	unsigned int count;
367
364
 
368
-	memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s));
369
-	memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s));
370
-	aq_vec_add_stats(self, &stats_rx, &stats_tx);
365
+	if (!aq_vec_is_valid_tc(self, tc))
366
+		return 0;
371
367
 
372
-	/* This data should mimic aq_ethtool_queue_stat_names structure
373
-	 */
374
-	data[count] += stats_rx.packets;
375
-	data[++count] += stats_tx.packets;
376
-	data[++count] += stats_tx.queue_restarts;
377
-	data[++count] += stats_rx.jumbo_packets;
378
-	data[++count] += stats_rx.lro_packets;
379
-	data[++count] += stats_rx.errors;
368
+	count = aq_ring_fill_stats_data(&self->ring[tc][AQ_VEC_RX_ID], data);
369
+	count += aq_ring_fill_stats_data(&self->ring[tc][AQ_VEC_TX_ID], data + count);
380
370
 
381
-	if (p_count)
382
-		*p_count = ++count;
383
-
384
-	return 0;
371
+	return count;
385
372
 }