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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / sfc / ethtool_common.c
blobb8d281ab6c7a1d82b14658671fa16f52cb1279fd
1 // SPDX-License-Identifier: GPL-2.0-only
2 /****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2019 Solarflare Communications Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
9 */
10 #include <linux/module.h>
11 #include <linux/netdevice.h>
12 #include "net_driver.h"
13 #include "mcdi.h"
14 #include "nic.h"
15 #include "selftest.h"
16 #include "ethtool_common.h"
17
18 struct efx_sw_stat_desc {
19 const char *name;
20 enum {
21 EFX_ETHTOOL_STAT_SOURCE_nic,
22 EFX_ETHTOOL_STAT_SOURCE_channel,
23 EFX_ETHTOOL_STAT_SOURCE_tx_queue
24 } source;
25 unsigned int offset;
26 u64 (*get_stat)(void *field); /* Reader function */
27 };
28
29 /* Initialiser for a struct efx_sw_stat_desc with type-checking */
30 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
31 get_stat_function) { \
32 .name = #stat_name, \
33 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
34 .offset = ((((field_type *) 0) == \
35 &((struct efx_##source_name *)0)->field) ? \
36 offsetof(struct efx_##source_name, field) : \
37 offsetof(struct efx_##source_name, field)), \
38 .get_stat = get_stat_function, \
39 }
40
41 static u64 efx_get_uint_stat(void *field)
42 {
43 return *(unsigned int *)field;
44 }
45
46 static u64 efx_get_atomic_stat(void *field)
47 {
48 return atomic_read((atomic_t *) field);
49 }
50
51 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
52 EFX_ETHTOOL_STAT(field, nic, field, \
53 atomic_t, efx_get_atomic_stat)
54
55 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
56 EFX_ETHTOOL_STAT(field, channel, n_##field, \
57 unsigned int, efx_get_uint_stat)
58 #define EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(field) \
59 EFX_ETHTOOL_STAT(field, channel, field, \
60 unsigned int, efx_get_uint_stat)
61
62 #define EFX_ETHTOOL_UINT_TXQ_STAT(field) \
63 EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \
64 unsigned int, efx_get_uint_stat)
65
66 static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
67 EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
68 EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
69 EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
70 EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
71 EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks),
72 EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
73 EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
74 EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets),
75 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
76 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
77 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
78 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
79 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err),
80 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err),
81 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err),
82 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err),
83 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err),
84 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
85 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
86 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
87 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
88 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_drops),
89 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_bad_drops),
90 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_tx),
91 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_redirect),
92 #ifdef CONFIG_RFS_ACCEL
93 EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(rfs_filter_count),
94 EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_succeeded),
95 EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_failed),
96 #endif
97 };
98
99 #define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
100
101 void efx_ethtool_get_drvinfo(struct net_device *net_dev,
102 struct ethtool_drvinfo *info)
103 {
104 struct efx_nic *efx = netdev_priv(net_dev);
105
106 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
107 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
108 efx_mcdi_print_fwver(efx, info->fw_version,
109 sizeof(info->fw_version));
110 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
111 }
112
113 u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
114 {
115 struct efx_nic *efx = netdev_priv(net_dev);
116
117 return efx->msg_enable;
118 }
119
120 void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
121 {
122 struct efx_nic *efx = netdev_priv(net_dev);
123
124 efx->msg_enable = msg_enable;
125 }
126
127 void efx_ethtool_get_pauseparam(struct net_device *net_dev,
128 struct ethtool_pauseparam *pause)
129 {
130 struct efx_nic *efx = netdev_priv(net_dev);
131
132 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
133 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
134 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
135 }
136
137 /**
138 * efx_fill_test - fill in an individual self-test entry
139 * @test_index: Index of the test
140 * @strings: Ethtool strings, or %NULL
141 * @data: Ethtool test results, or %NULL
142 * @test: Pointer to test result (used only if data != %NULL)
143 * @unit_format: Unit name format (e.g. "chan\%d")
144 * @unit_id: Unit id (e.g. 0 for "chan0")
145 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
146 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
147 *
148 * Fill in an individual self-test entry.
149 */
150 static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
151 int *test, const char *unit_format, int unit_id,
152 const char *test_format, const char *test_id)
153 {
154 char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
155
156 /* Fill data value, if applicable */
157 if (data)
158 data[test_index] = *test;
159
160 /* Fill string, if applicable */
161 if (strings) {
162 if (strchr(unit_format, '%'))
163 snprintf(unit_str, sizeof(unit_str),
164 unit_format, unit_id);
165 else
166 strcpy(unit_str, unit_format);
167 snprintf(test_str, sizeof(test_str), test_format, test_id);
168 snprintf(strings + test_index * ETH_GSTRING_LEN,
169 ETH_GSTRING_LEN,
170 "%-6s %-24s", unit_str, test_str);
171 }
172 }
173
174 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
175 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
176 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
177 #define EFX_LOOPBACK_NAME(_mode, _counter) \
178 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
179
180 /**
181 * efx_fill_loopback_test - fill in a block of loopback self-test entries
182 * @efx: Efx NIC
183 * @lb_tests: Efx loopback self-test results structure
184 * @mode: Loopback test mode
185 * @test_index: Starting index of the test
186 * @strings: Ethtool strings, or %NULL
187 * @data: Ethtool test results, or %NULL
188 *
189 * Fill in a block of loopback self-test entries. Return new test
190 * index.
191 */
192 static int efx_fill_loopback_test(struct efx_nic *efx,
193 struct efx_loopback_self_tests *lb_tests,
194 enum efx_loopback_mode mode,
195 unsigned int test_index,
196 u8 *strings, u64 *data)
197 {
198 struct efx_channel *channel =
199 efx_get_channel(efx, efx->tx_channel_offset);
200 struct efx_tx_queue *tx_queue;
201
202 efx_for_each_channel_tx_queue(tx_queue, channel) {
203 efx_fill_test(test_index++, strings, data,
204 &lb_tests->tx_sent[tx_queue->queue],
205 EFX_TX_QUEUE_NAME(tx_queue),
206 EFX_LOOPBACK_NAME(mode, "tx_sent"));
207 efx_fill_test(test_index++, strings, data,
208 &lb_tests->tx_done[tx_queue->queue],
209 EFX_TX_QUEUE_NAME(tx_queue),
210 EFX_LOOPBACK_NAME(mode, "tx_done"));
211 }
212 efx_fill_test(test_index++, strings, data,
213 &lb_tests->rx_good,
214 "rx", 0,
215 EFX_LOOPBACK_NAME(mode, "rx_good"));
216 efx_fill_test(test_index++, strings, data,
217 &lb_tests->rx_bad,
218 "rx", 0,
219 EFX_LOOPBACK_NAME(mode, "rx_bad"));
220
221 return test_index;
222 }
223
224 /**
225 * efx_ethtool_fill_self_tests - get self-test details
226 * @efx: Efx NIC
227 * @tests: Efx self-test results structure, or %NULL
228 * @strings: Ethtool strings, or %NULL
229 * @data: Ethtool test results, or %NULL
230 *
231 * Get self-test number of strings, strings, and/or test results.
232 * Return number of strings (== number of test results).
233 *
234 * The reason for merging these three functions is to make sure that
235 * they can never be inconsistent.
236 */
237 int efx_ethtool_fill_self_tests(struct efx_nic *efx,
238 struct efx_self_tests *tests,
239 u8 *strings, u64 *data)
240 {
241 struct efx_channel *channel;
242 unsigned int n = 0, i;
243 enum efx_loopback_mode mode;
244
245 efx_fill_test(n++, strings, data, &tests->phy_alive,
246 "phy", 0, "alive", NULL);
247 efx_fill_test(n++, strings, data, &tests->nvram,
248 "core", 0, "nvram", NULL);
249 efx_fill_test(n++, strings, data, &tests->interrupt,
250 "core", 0, "interrupt", NULL);
251
252 /* Event queues */
253 efx_for_each_channel(channel, efx) {
254 efx_fill_test(n++, strings, data,
255 &tests->eventq_dma[channel->channel],
256 EFX_CHANNEL_NAME(channel),
257 "eventq.dma", NULL);
258 efx_fill_test(n++, strings, data,
259 &tests->eventq_int[channel->channel],
260 EFX_CHANNEL_NAME(channel),
261 "eventq.int", NULL);
262 }
263
264 efx_fill_test(n++, strings, data, &tests->memory,
265 "core", 0, "memory", NULL);
266 efx_fill_test(n++, strings, data, &tests->registers,
267 "core", 0, "registers", NULL);
268
269 if (efx->phy_op->run_tests != NULL) {
270 EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
271
272 for (i = 0; true; ++i) {
273 const char *name;
274
275 EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
276 name = efx->phy_op->test_name(efx, i);
277 if (name == NULL)
278 break;
279
280 efx_fill_test(n++, strings, data, &tests->phy_ext[i],
281 "phy", 0, name, NULL);
282 }
283 }
284
285 /* Loopback tests */
286 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
287 if (!(efx->loopback_modes & (1 << mode)))
288 continue;
289 n = efx_fill_loopback_test(efx,
290 &tests->loopback[mode], mode, n,
291 strings, data);
292 }
293
294 return n;
295 }
296
297 static size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings)
298 {
299 size_t n_stats = 0;
300 struct efx_channel *channel;
301
302 efx_for_each_channel(channel, efx) {
303 if (efx_channel_has_tx_queues(channel)) {
304 n_stats++;
305 if (strings != NULL) {
306 snprintf(strings, ETH_GSTRING_LEN,
307 "tx-%u.tx_packets",
308 channel->tx_queue[0].queue /
309 EFX_TXQ_TYPES);
310
311 strings += ETH_GSTRING_LEN;
312 }
313 }
314 }
315 efx_for_each_channel(channel, efx) {
316 if (efx_channel_has_rx_queue(channel)) {
317 n_stats++;
318 if (strings != NULL) {
319 snprintf(strings, ETH_GSTRING_LEN,
320 "rx-%d.rx_packets", channel->channel);
321 strings += ETH_GSTRING_LEN;
322 }
323 }
324 }
325 if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
326 unsigned short xdp;
327
328 for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
329 n_stats++;
330 if (strings) {
331 snprintf(strings, ETH_GSTRING_LEN,
332 "tx-xdp-cpu-%hu.tx_packets", xdp);
333 strings += ETH_GSTRING_LEN;
334 }
335 }
336 }
337
338 return n_stats;
339 }
340
341 int efx_ethtool_get_sset_count(struct net_device *net_dev, int string_set)
342 {
343 struct efx_nic *efx = netdev_priv(net_dev);
344
345 switch (string_set) {
346 case ETH_SS_STATS:
347 return efx->type->describe_stats(efx, NULL) +
348 EFX_ETHTOOL_SW_STAT_COUNT +
349 efx_describe_per_queue_stats(efx, NULL) +
350 efx_ptp_describe_stats(efx, NULL);
351 case ETH_SS_TEST:
352 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
353 default:
354 return -EINVAL;
355 }
356 }
357
358 void efx_ethtool_get_strings(struct net_device *net_dev,
359 u32 string_set, u8 *strings)
360 {
361 struct efx_nic *efx = netdev_priv(net_dev);
362 int i;
363
364 switch (string_set) {
365 case ETH_SS_STATS:
366 strings += (efx->type->describe_stats(efx, strings) *
367 ETH_GSTRING_LEN);
368 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
369 strlcpy(strings + i * ETH_GSTRING_LEN,
370 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
371 strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
372 strings += (efx_describe_per_queue_stats(efx, strings) *
373 ETH_GSTRING_LEN);
374 efx_ptp_describe_stats(efx, strings);
375 break;
376 case ETH_SS_TEST:
377 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
378 break;
379 default:
380 /* No other string sets */
381 break;
382 }
383 }
384
385 void efx_ethtool_get_stats(struct net_device *net_dev,
386 struct ethtool_stats *stats,
387 u64 *data)
388 {
389 struct efx_nic *efx = netdev_priv(net_dev);
390 const struct efx_sw_stat_desc *stat;
391 struct efx_channel *channel;
392 struct efx_tx_queue *tx_queue;
393 struct efx_rx_queue *rx_queue;
394 int i;
395
396 spin_lock_bh(&efx->stats_lock);
397
398 /* Get NIC statistics */
399 data += efx->type->update_stats(efx, data, NULL);
400
401 /* Get software statistics */
402 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
403 stat = &efx_sw_stat_desc[i];
404 switch (stat->source) {
405 case EFX_ETHTOOL_STAT_SOURCE_nic:
406 data[i] = stat->get_stat((void *)efx + stat->offset);
407 break;
408 case EFX_ETHTOOL_STAT_SOURCE_channel:
409 data[i] = 0;
410 efx_for_each_channel(channel, efx)
411 data[i] += stat->get_stat((void *)channel +
412 stat->offset);
413 break;
414 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
415 data[i] = 0;
416 efx_for_each_channel(channel, efx) {
417 efx_for_each_channel_tx_queue(tx_queue, channel)
418 data[i] +=
419 stat->get_stat((void *)tx_queue
420 + stat->offset);
421 }
422 break;
423 }
424 }
425 data += EFX_ETHTOOL_SW_STAT_COUNT;
426
427 spin_unlock_bh(&efx->stats_lock);
428
429 efx_for_each_channel(channel, efx) {
430 if (efx_channel_has_tx_queues(channel)) {
431 *data = 0;
432 efx_for_each_channel_tx_queue(tx_queue, channel) {
433 *data += tx_queue->tx_packets;
434 }
435 data++;
436 }
437 }
438 efx_for_each_channel(channel, efx) {
439 if (efx_channel_has_rx_queue(channel)) {
440 *data = 0;
441 efx_for_each_channel_rx_queue(rx_queue, channel) {
442 *data += rx_queue->rx_packets;
443 }
444 data++;
445 }
446 }
447 if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
448 int xdp;
449
450 for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
451 data[0] = efx->xdp_tx_queues[xdp]->tx_packets;
452 data++;
453 }
454 }
455
456 efx_ptp_update_stats(efx, data);
457 }
Linux with added FPC-III support