xref: /linux/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c (revision 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf)
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
3 
4 #include <linux/ethtool.h>
5 #include <linux/vmalloc.h>
6 
7 #include "fm10k.h"
8 
9 struct fm10k_stats {
10 	/* The stat_string is expected to be a format string formatted using
11 	 * vsnprintf by fm10k_add_stat_strings. Every member of a stats array
12 	 * should use the same format specifiers as they will be formatted
13 	 * using the same variadic arguments.
14 	 */
15 	char stat_string[ETH_GSTRING_LEN];
16 	int sizeof_stat;
17 	int stat_offset;
18 };
19 
20 #define FM10K_STAT_FIELDS(_type, _name, _stat) { \
21 	.stat_string = _name, \
22 	.sizeof_stat = sizeof_field(_type, _stat), \
23 	.stat_offset = offsetof(_type, _stat) \
24 }
25 
26 /* netdevice statistics */
27 #define FM10K_NETDEV_STAT(_net_stat) \
28 	FM10K_STAT_FIELDS(struct net_device_stats, __stringify(_net_stat), \
29 			  _net_stat)
30 
31 static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
32 	FM10K_NETDEV_STAT(tx_packets),
33 	FM10K_NETDEV_STAT(tx_bytes),
34 	FM10K_NETDEV_STAT(tx_errors),
35 	FM10K_NETDEV_STAT(rx_packets),
36 	FM10K_NETDEV_STAT(rx_bytes),
37 	FM10K_NETDEV_STAT(rx_errors),
38 	FM10K_NETDEV_STAT(rx_dropped),
39 
40 	/* detailed Rx errors */
41 	FM10K_NETDEV_STAT(rx_length_errors),
42 	FM10K_NETDEV_STAT(rx_crc_errors),
43 	FM10K_NETDEV_STAT(rx_fifo_errors),
44 };
45 
46 #define FM10K_NETDEV_STATS_LEN	ARRAY_SIZE(fm10k_gstrings_net_stats)
47 
48 /* General interface statistics */
49 #define FM10K_STAT(_name, _stat) \
50 	FM10K_STAT_FIELDS(struct fm10k_intfc, _name, _stat)
51 
52 static const struct fm10k_stats fm10k_gstrings_global_stats[] = {
53 	FM10K_STAT("tx_restart_queue", restart_queue),
54 	FM10K_STAT("tx_busy", tx_busy),
55 	FM10K_STAT("tx_csum_errors", tx_csum_errors),
56 	FM10K_STAT("rx_alloc_failed", alloc_failed),
57 	FM10K_STAT("rx_csum_errors", rx_csum_errors),
58 
59 	FM10K_STAT("tx_packets_nic", tx_packets_nic),
60 	FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
61 	FM10K_STAT("rx_packets_nic", rx_packets_nic),
62 	FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
63 	FM10K_STAT("rx_drops_nic", rx_drops_nic),
64 	FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
65 	FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
66 
67 	FM10K_STAT("swapi_status", hw.swapi.status),
68 	FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
69 	FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
70 
71 	FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending),
72 
73 	FM10K_STAT("tx_hang_count", tx_timeout_count),
74 };
75 
76 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = {
77 	FM10K_STAT("timeout", stats.timeout.count),
78 	FM10K_STAT("ur", stats.ur.count),
79 	FM10K_STAT("ca", stats.ca.count),
80 	FM10K_STAT("um", stats.um.count),
81 	FM10K_STAT("xec", stats.xec.count),
82 	FM10K_STAT("vlan_drop", stats.vlan_drop.count),
83 	FM10K_STAT("loopback_drop", stats.loopback_drop.count),
84 	FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
85 };
86 
87 /* mailbox statistics */
88 #define FM10K_MBX_STAT(_name, _stat) \
89 	FM10K_STAT_FIELDS(struct fm10k_mbx_info, _name, _stat)
90 
91 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
92 	FM10K_MBX_STAT("mbx_tx_busy", tx_busy),
93 	FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped),
94 	FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
95 	FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
96 	FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
97 	FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
98 	FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
99 	FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
100 	FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
101 };
102 
103 /* per-queue ring statistics */
104 #define FM10K_QUEUE_STAT(_name, _stat) \
105 	FM10K_STAT_FIELDS(struct fm10k_ring, _name, _stat)
106 
107 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = {
108 	FM10K_QUEUE_STAT("%s_queue_%u_packets", stats.packets),
109 	FM10K_QUEUE_STAT("%s_queue_%u_bytes", stats.bytes),
110 };
111 
112 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)
113 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats)
114 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats)
115 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats)
116 
117 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
118 				FM10K_NETDEV_STATS_LEN + \
119 				FM10K_MBX_STATS_LEN)
120 
121 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = {
122 	"Mailbox test (on/offline)"
123 };
124 
125 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN)
126 
127 enum fm10k_self_test_types {
128 	FM10K_TEST_MBX,
129 	FM10K_TEST_MAX = FM10K_TEST_LEN
130 };
131 
132 enum {
133 	FM10K_PRV_FLAG_LEN,
134 };
135 
136 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = {
137 };
138 
__fm10k_add_stat_strings(u8 ** p,const struct fm10k_stats stats[],const unsigned int size,...)139 static void __fm10k_add_stat_strings(u8 **p, const struct fm10k_stats stats[],
140 				     const unsigned int size, ...)
141 {
142 	unsigned int i;
143 
144 	for (i = 0; i < size; i++) {
145 		va_list args;
146 
147 		va_start(args, size);
148 		vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
149 		*p += ETH_GSTRING_LEN;
150 		va_end(args);
151 	}
152 }
153 
154 #define fm10k_add_stat_strings(p, stats, ...) \
155 	__fm10k_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
156 
fm10k_get_stat_strings(struct net_device * dev,u8 * data)157 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data)
158 {
159 	struct fm10k_intfc *interface = netdev_priv(dev);
160 	unsigned int i;
161 
162 	fm10k_add_stat_strings(&data, fm10k_gstrings_net_stats);
163 
164 	fm10k_add_stat_strings(&data, fm10k_gstrings_global_stats);
165 
166 	fm10k_add_stat_strings(&data, fm10k_gstrings_mbx_stats);
167 
168 	if (interface->hw.mac.type != fm10k_mac_vf)
169 		fm10k_add_stat_strings(&data, fm10k_gstrings_pf_stats);
170 
171 	for (i = 0; i < interface->hw.mac.max_queues; i++) {
172 		fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
173 				       "tx", i);
174 
175 		fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
176 				       "rx", i);
177 	}
178 }
179 
fm10k_get_strings(struct net_device * dev,u32 stringset,u8 * data)180 static void fm10k_get_strings(struct net_device *dev,
181 			      u32 stringset, u8 *data)
182 {
183 	switch (stringset) {
184 	case ETH_SS_TEST:
185 		memcpy(data, fm10k_gstrings_test,
186 		       FM10K_TEST_LEN * ETH_GSTRING_LEN);
187 		break;
188 	case ETH_SS_STATS:
189 		fm10k_get_stat_strings(dev, data);
190 		break;
191 	case ETH_SS_PRIV_FLAGS:
192 		memcpy(data, fm10k_prv_flags,
193 		       FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN);
194 		break;
195 	}
196 }
197 
fm10k_get_sset_count(struct net_device * dev,int sset)198 static int fm10k_get_sset_count(struct net_device *dev, int sset)
199 {
200 	struct fm10k_intfc *interface = netdev_priv(dev);
201 	struct fm10k_hw *hw = &interface->hw;
202 	int stats_len = FM10K_STATIC_STATS_LEN;
203 
204 	switch (sset) {
205 	case ETH_SS_TEST:
206 		return FM10K_TEST_LEN;
207 	case ETH_SS_STATS:
208 		stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN;
209 
210 		if (hw->mac.type != fm10k_mac_vf)
211 			stats_len += FM10K_PF_STATS_LEN;
212 
213 		return stats_len;
214 	case ETH_SS_PRIV_FLAGS:
215 		return FM10K_PRV_FLAG_LEN;
216 	default:
217 		return -EOPNOTSUPP;
218 	}
219 }
220 
__fm10k_add_ethtool_stats(u64 ** data,void * pointer,const struct fm10k_stats stats[],const unsigned int size)221 static void __fm10k_add_ethtool_stats(u64 **data, void *pointer,
222 				      const struct fm10k_stats stats[],
223 				      const unsigned int size)
224 {
225 	unsigned int i;
226 
227 	if (!pointer) {
228 		/* memory is not zero allocated so we have to clear it */
229 		for (i = 0; i < size; i++)
230 			*((*data)++) = 0;
231 		return;
232 	}
233 
234 	for (i = 0; i < size; i++) {
235 		char *p = (char *)pointer + stats[i].stat_offset;
236 
237 		switch (stats[i].sizeof_stat) {
238 		case sizeof(u64):
239 			*((*data)++) = *(u64 *)p;
240 			break;
241 		case sizeof(u32):
242 			*((*data)++) = *(u32 *)p;
243 			break;
244 		case sizeof(u16):
245 			*((*data)++) = *(u16 *)p;
246 			break;
247 		case sizeof(u8):
248 			*((*data)++) = *(u8 *)p;
249 			break;
250 		default:
251 			WARN_ONCE(1, "unexpected stat size for %s",
252 				  stats[i].stat_string);
253 			*((*data)++) = 0;
254 		}
255 	}
256 }
257 
258 #define fm10k_add_ethtool_stats(data, pointer, stats) \
259 	__fm10k_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
260 
fm10k_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats __always_unused * stats,u64 * data)261 static void fm10k_get_ethtool_stats(struct net_device *netdev,
262 				    struct ethtool_stats __always_unused *stats,
263 				    u64 *data)
264 {
265 	struct fm10k_intfc *interface = netdev_priv(netdev);
266 	struct net_device_stats *net_stats = &netdev->stats;
267 	int i;
268 
269 	fm10k_update_stats(interface);
270 
271 	fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats);
272 
273 	fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats);
274 
275 	fm10k_add_ethtool_stats(&data, &interface->hw.mbx,
276 				fm10k_gstrings_mbx_stats);
277 
278 	if (interface->hw.mac.type != fm10k_mac_vf) {
279 		fm10k_add_ethtool_stats(&data, interface,
280 					fm10k_gstrings_pf_stats);
281 	}
282 
283 	for (i = 0; i < interface->hw.mac.max_queues; i++) {
284 		struct fm10k_ring *ring;
285 
286 		ring = interface->tx_ring[i];
287 		fm10k_add_ethtool_stats(&data, ring,
288 					fm10k_gstrings_queue_stats);
289 
290 		ring = interface->rx_ring[i];
291 		fm10k_add_ethtool_stats(&data, ring,
292 					fm10k_gstrings_queue_stats);
293 	}
294 }
295 
296 /* If function below adds more registers this define needs to be updated */
297 #define FM10K_REGS_LEN_Q 29
298 
fm10k_get_reg_q(struct fm10k_hw * hw,u32 * buff,int i)299 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
300 {
301 	int idx = 0;
302 
303 	buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
304 	buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
305 	buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
306 	buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
307 	buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
308 	buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
309 	buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
310 	buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
311 	buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
312 	buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
313 	buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
314 	buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
315 	buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
316 	buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
317 	buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
318 	buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
319 	buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
320 	buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
321 	buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
322 	buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
323 	buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
324 	buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
325 	buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
326 	buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
327 	buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
328 	buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
329 	buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
330 	buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
331 	buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
332 
333 	BUG_ON(idx != FM10K_REGS_LEN_Q);
334 }
335 
336 /* If function above adds more registers this define needs to be updated */
337 #define FM10K_REGS_LEN_VSI 43
338 
fm10k_get_reg_vsi(struct fm10k_hw * hw,u32 * buff,int i)339 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
340 {
341 	int idx = 0, j;
342 
343 	buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
344 	for (j = 0; j < 10; j++)
345 		buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
346 	for (j = 0; j < 32; j++)
347 		buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
348 
349 	BUG_ON(idx != FM10K_REGS_LEN_VSI);
350 }
351 
fm10k_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)352 static void fm10k_get_regs(struct net_device *netdev,
353 			   struct ethtool_regs *regs, void *p)
354 {
355 	struct fm10k_intfc *interface = netdev_priv(netdev);
356 	struct fm10k_hw *hw = &interface->hw;
357 	u32 *buff = p;
358 	u16 i;
359 
360 	regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id;
361 
362 	switch (hw->mac.type) {
363 	case fm10k_mac_pf:
364 		/* General PF Registers */
365 		*(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
366 		*(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
367 		*(buff++) = fm10k_read_reg(hw, FM10K_GCR);
368 		*(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
369 
370 		for (i = 0; i < 8; i++) {
371 			*(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
372 			*(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
373 		}
374 
375 		for (i = 0; i < 65; i++) {
376 			fm10k_get_reg_vsi(hw, buff, i);
377 			buff += FM10K_REGS_LEN_VSI;
378 		}
379 
380 		*(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
381 		*(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
382 
383 		for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
384 			fm10k_get_reg_q(hw, buff, i);
385 			buff += FM10K_REGS_LEN_Q;
386 		}
387 
388 		*(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
389 
390 		for (i = 0; i < 8; i++)
391 			*(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
392 
393 		/* Interrupt Throttling Registers */
394 		for (i = 0; i < 130; i++)
395 			*(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
396 
397 		break;
398 	case fm10k_mac_vf:
399 		/* General VF registers */
400 		*(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL);
401 		*(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP);
402 		*(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME);
403 
404 		/* Interrupt Throttling Registers */
405 		for (i = 0; i < 8; i++)
406 			*(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i));
407 
408 		fm10k_get_reg_vsi(hw, buff, 0);
409 		buff += FM10K_REGS_LEN_VSI;
410 
411 		for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) {
412 			if (i < hw->mac.max_queues)
413 				fm10k_get_reg_q(hw, buff, i);
414 			else
415 				memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q);
416 			buff += FM10K_REGS_LEN_Q;
417 		}
418 
419 		break;
420 	default:
421 		return;
422 	}
423 }
424 
425 /* If function above adds more registers these define need to be updated */
426 #define FM10K_REGS_LEN_PF \
427 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
428 #define FM10K_REGS_LEN_VF \
429 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q))
430 
fm10k_get_regs_len(struct net_device * netdev)431 static int fm10k_get_regs_len(struct net_device *netdev)
432 {
433 	struct fm10k_intfc *interface = netdev_priv(netdev);
434 	struct fm10k_hw *hw = &interface->hw;
435 
436 	switch (hw->mac.type) {
437 	case fm10k_mac_pf:
438 		return FM10K_REGS_LEN_PF * sizeof(u32);
439 	case fm10k_mac_vf:
440 		return FM10K_REGS_LEN_VF * sizeof(u32);
441 	default:
442 		return 0;
443 	}
444 }
445 
fm10k_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)446 static void fm10k_get_drvinfo(struct net_device *dev,
447 			      struct ethtool_drvinfo *info)
448 {
449 	struct fm10k_intfc *interface = netdev_priv(dev);
450 
451 	strscpy(info->driver, fm10k_driver_name,
452 		sizeof(info->driver));
453 	strscpy(info->bus_info, pci_name(interface->pdev),
454 		sizeof(info->bus_info));
455 }
456 
fm10k_get_pauseparam(struct net_device * dev,struct ethtool_pauseparam * pause)457 static void fm10k_get_pauseparam(struct net_device *dev,
458 				 struct ethtool_pauseparam *pause)
459 {
460 	struct fm10k_intfc *interface = netdev_priv(dev);
461 
462 	/* record fixed values for autoneg and tx pause */
463 	pause->autoneg = 0;
464 	pause->tx_pause = 1;
465 
466 	pause->rx_pause = interface->rx_pause ? 1 : 0;
467 }
468 
fm10k_set_pauseparam(struct net_device * dev,struct ethtool_pauseparam * pause)469 static int fm10k_set_pauseparam(struct net_device *dev,
470 				struct ethtool_pauseparam *pause)
471 {
472 	struct fm10k_intfc *interface = netdev_priv(dev);
473 	struct fm10k_hw *hw = &interface->hw;
474 
475 	if (pause->autoneg || !pause->tx_pause)
476 		return -EINVAL;
477 
478 	/* we can only support pause on the PF to avoid head-of-line blocking */
479 	if (hw->mac.type == fm10k_mac_pf)
480 		interface->rx_pause = pause->rx_pause ? ~0 : 0;
481 	else if (pause->rx_pause)
482 		return -EINVAL;
483 
484 	if (netif_running(dev))
485 		fm10k_update_rx_drop_en(interface);
486 
487 	return 0;
488 }
489 
fm10k_get_msglevel(struct net_device * netdev)490 static u32 fm10k_get_msglevel(struct net_device *netdev)
491 {
492 	struct fm10k_intfc *interface = netdev_priv(netdev);
493 
494 	return interface->msg_enable;
495 }
496 
fm10k_set_msglevel(struct net_device * netdev,u32 data)497 static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
498 {
499 	struct fm10k_intfc *interface = netdev_priv(netdev);
500 
501 	interface->msg_enable = data;
502 }
503 
fm10k_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)504 static void fm10k_get_ringparam(struct net_device *netdev,
505 				struct ethtool_ringparam *ring,
506 				struct kernel_ethtool_ringparam *kernel_ring,
507 				struct netlink_ext_ack *extack)
508 {
509 	struct fm10k_intfc *interface = netdev_priv(netdev);
510 
511 	ring->rx_max_pending = FM10K_MAX_RXD;
512 	ring->tx_max_pending = FM10K_MAX_TXD;
513 	ring->rx_mini_max_pending = 0;
514 	ring->rx_jumbo_max_pending = 0;
515 	ring->rx_pending = interface->rx_ring_count;
516 	ring->tx_pending = interface->tx_ring_count;
517 	ring->rx_mini_pending = 0;
518 	ring->rx_jumbo_pending = 0;
519 }
520 
fm10k_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)521 static int fm10k_set_ringparam(struct net_device *netdev,
522 			       struct ethtool_ringparam *ring,
523 			       struct kernel_ethtool_ringparam *kernel_ring,
524 			       struct netlink_ext_ack *extack)
525 {
526 	struct fm10k_intfc *interface = netdev_priv(netdev);
527 	struct fm10k_ring *temp_ring;
528 	int i, err = 0;
529 	u32 new_rx_count, new_tx_count;
530 
531 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
532 		return -EINVAL;
533 
534 	new_tx_count = clamp_t(u32, ring->tx_pending,
535 			       FM10K_MIN_TXD, FM10K_MAX_TXD);
536 	new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
537 
538 	new_rx_count = clamp_t(u32, ring->rx_pending,
539 			       FM10K_MIN_RXD, FM10K_MAX_RXD);
540 	new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
541 
542 	if ((new_tx_count == interface->tx_ring_count) &&
543 	    (new_rx_count == interface->rx_ring_count)) {
544 		/* nothing to do */
545 		return 0;
546 	}
547 
548 	while (test_and_set_bit(__FM10K_RESETTING, interface->state))
549 		usleep_range(1000, 2000);
550 
551 	if (!netif_running(interface->netdev)) {
552 		for (i = 0; i < interface->num_tx_queues; i++)
553 			interface->tx_ring[i]->count = new_tx_count;
554 		for (i = 0; i < interface->num_rx_queues; i++)
555 			interface->rx_ring[i]->count = new_rx_count;
556 		interface->tx_ring_count = new_tx_count;
557 		interface->rx_ring_count = new_rx_count;
558 		goto clear_reset;
559 	}
560 
561 	/* allocate temporary buffer to store rings in */
562 	i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
563 	temp_ring = vmalloc(array_size(i, sizeof(struct fm10k_ring)));
564 
565 	if (!temp_ring) {
566 		err = -ENOMEM;
567 		goto clear_reset;
568 	}
569 
570 	fm10k_down(interface);
571 
572 	/* Setup new Tx resources and free the old Tx resources in that order.
573 	 * We can then assign the new resources to the rings via a memcpy.
574 	 * The advantage to this approach is that we are guaranteed to still
575 	 * have resources even in the case of an allocation failure.
576 	 */
577 	if (new_tx_count != interface->tx_ring_count) {
578 		for (i = 0; i < interface->num_tx_queues; i++) {
579 			memcpy(&temp_ring[i], interface->tx_ring[i],
580 			       sizeof(struct fm10k_ring));
581 
582 			temp_ring[i].count = new_tx_count;
583 			err = fm10k_setup_tx_resources(&temp_ring[i]);
584 			if (err) {
585 				while (i) {
586 					i--;
587 					fm10k_free_tx_resources(&temp_ring[i]);
588 				}
589 				goto err_setup;
590 			}
591 		}
592 
593 		for (i = 0; i < interface->num_tx_queues; i++) {
594 			fm10k_free_tx_resources(interface->tx_ring[i]);
595 
596 			memcpy(interface->tx_ring[i], &temp_ring[i],
597 			       sizeof(struct fm10k_ring));
598 		}
599 
600 		interface->tx_ring_count = new_tx_count;
601 	}
602 
603 	/* Repeat the process for the Rx rings if needed */
604 	if (new_rx_count != interface->rx_ring_count) {
605 		for (i = 0; i < interface->num_rx_queues; i++) {
606 			memcpy(&temp_ring[i], interface->rx_ring[i],
607 			       sizeof(struct fm10k_ring));
608 
609 			temp_ring[i].count = new_rx_count;
610 			err = fm10k_setup_rx_resources(&temp_ring[i]);
611 			if (err) {
612 				while (i) {
613 					i--;
614 					fm10k_free_rx_resources(&temp_ring[i]);
615 				}
616 				goto err_setup;
617 			}
618 		}
619 
620 		for (i = 0; i < interface->num_rx_queues; i++) {
621 			fm10k_free_rx_resources(interface->rx_ring[i]);
622 
623 			memcpy(interface->rx_ring[i], &temp_ring[i],
624 			       sizeof(struct fm10k_ring));
625 		}
626 
627 		interface->rx_ring_count = new_rx_count;
628 	}
629 
630 err_setup:
631 	fm10k_up(interface);
632 	vfree(temp_ring);
633 clear_reset:
634 	clear_bit(__FM10K_RESETTING, interface->state);
635 	return err;
636 }
637 
fm10k_get_coalesce(struct net_device * dev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)638 static int fm10k_get_coalesce(struct net_device *dev,
639 			      struct ethtool_coalesce *ec,
640 			      struct kernel_ethtool_coalesce *kernel_coal,
641 			      struct netlink_ext_ack *extack)
642 {
643 	struct fm10k_intfc *interface = netdev_priv(dev);
644 
645 	ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr);
646 	ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
647 
648 	ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr);
649 	ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
650 
651 	return 0;
652 }
653 
fm10k_set_coalesce(struct net_device * dev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)654 static int fm10k_set_coalesce(struct net_device *dev,
655 			      struct ethtool_coalesce *ec,
656 			      struct kernel_ethtool_coalesce *kernel_coal,
657 			      struct netlink_ext_ack *extack)
658 {
659 	struct fm10k_intfc *interface = netdev_priv(dev);
660 	u16 tx_itr, rx_itr;
661 	int i;
662 
663 	/* verify limits */
664 	if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
665 	    (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
666 		return -EINVAL;
667 
668 	/* record settings */
669 	tx_itr = ec->tx_coalesce_usecs;
670 	rx_itr = ec->rx_coalesce_usecs;
671 
672 	/* set initial values for adaptive ITR */
673 	if (ec->use_adaptive_tx_coalesce)
674 		tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT;
675 
676 	if (ec->use_adaptive_rx_coalesce)
677 		rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT;
678 
679 	/* update interface */
680 	interface->tx_itr = tx_itr;
681 	interface->rx_itr = rx_itr;
682 
683 	/* update q_vectors */
684 	for (i = 0; i < interface->num_q_vectors; i++) {
685 		struct fm10k_q_vector *qv = interface->q_vector[i];
686 
687 		qv->tx.itr = tx_itr;
688 		qv->rx.itr = rx_itr;
689 	}
690 
691 	return 0;
692 }
693 
fm10k_get_rssh_fields(struct net_device * dev,struct ethtool_rxfh_fields * cmd)694 static int fm10k_get_rssh_fields(struct net_device *dev,
695 				 struct ethtool_rxfh_fields *cmd)
696 {
697 	struct fm10k_intfc *interface = netdev_priv(dev);
698 
699 	cmd->data = 0;
700 
701 	/* Report default options for RSS on fm10k */
702 	switch (cmd->flow_type) {
703 	case TCP_V4_FLOW:
704 	case TCP_V6_FLOW:
705 		cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
706 		fallthrough;
707 	case UDP_V4_FLOW:
708 		if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
709 			     interface->flags))
710 			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
711 		fallthrough;
712 	case SCTP_V4_FLOW:
713 	case SCTP_V6_FLOW:
714 	case AH_ESP_V4_FLOW:
715 	case AH_ESP_V6_FLOW:
716 	case AH_V4_FLOW:
717 	case AH_V6_FLOW:
718 	case ESP_V4_FLOW:
719 	case ESP_V6_FLOW:
720 	case IPV4_FLOW:
721 	case IPV6_FLOW:
722 		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
723 		break;
724 	case UDP_V6_FLOW:
725 		if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
726 			     interface->flags))
727 			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
728 		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
729 		break;
730 	default:
731 		return -EINVAL;
732 	}
733 
734 	return 0;
735 }
736 
fm10k_get_rxnfc(struct net_device * dev,struct ethtool_rxnfc * cmd,u32 __always_unused * rule_locs)737 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
738 			   u32 __always_unused *rule_locs)
739 {
740 	struct fm10k_intfc *interface = netdev_priv(dev);
741 	int ret = -EOPNOTSUPP;
742 
743 	switch (cmd->cmd) {
744 	case ETHTOOL_GRXRINGS:
745 		cmd->data = interface->num_rx_queues;
746 		ret = 0;
747 		break;
748 	default:
749 		break;
750 	}
751 
752 	return ret;
753 }
754 
fm10k_set_rssh_fields(struct net_device * dev,const struct ethtool_rxfh_fields * nfc,struct netlink_ext_ack * extack)755 static int fm10k_set_rssh_fields(struct net_device *dev,
756 				 const struct ethtool_rxfh_fields *nfc,
757 				 struct netlink_ext_ack *extack)
758 {
759 	struct fm10k_intfc *interface = netdev_priv(dev);
760 	int rss_ipv4_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
761 				    interface->flags);
762 	int rss_ipv6_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
763 				    interface->flags);
764 
765 	/* RSS does not support anything other than hashing
766 	 * to queues on src and dst IPs and ports
767 	 */
768 	if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
769 			  RXH_L4_B_0_1 | RXH_L4_B_2_3))
770 		return -EINVAL;
771 
772 	switch (nfc->flow_type) {
773 	case TCP_V4_FLOW:
774 	case TCP_V6_FLOW:
775 		if (!(nfc->data & RXH_IP_SRC) ||
776 		    !(nfc->data & RXH_IP_DST) ||
777 		    !(nfc->data & RXH_L4_B_0_1) ||
778 		    !(nfc->data & RXH_L4_B_2_3))
779 			return -EINVAL;
780 		break;
781 	case UDP_V4_FLOW:
782 		if (!(nfc->data & RXH_IP_SRC) ||
783 		    !(nfc->data & RXH_IP_DST))
784 			return -EINVAL;
785 		switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
786 		case 0:
787 			clear_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
788 				  interface->flags);
789 			break;
790 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
791 			set_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
792 				interface->flags);
793 			break;
794 		default:
795 			return -EINVAL;
796 		}
797 		break;
798 	case UDP_V6_FLOW:
799 		if (!(nfc->data & RXH_IP_SRC) ||
800 		    !(nfc->data & RXH_IP_DST))
801 			return -EINVAL;
802 		switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
803 		case 0:
804 			clear_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
805 				  interface->flags);
806 			break;
807 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
808 			set_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
809 				interface->flags);
810 			break;
811 		default:
812 			return -EINVAL;
813 		}
814 		break;
815 	case AH_ESP_V4_FLOW:
816 	case AH_V4_FLOW:
817 	case ESP_V4_FLOW:
818 	case SCTP_V4_FLOW:
819 	case AH_ESP_V6_FLOW:
820 	case AH_V6_FLOW:
821 	case ESP_V6_FLOW:
822 	case SCTP_V6_FLOW:
823 		if (!(nfc->data & RXH_IP_SRC) ||
824 		    !(nfc->data & RXH_IP_DST) ||
825 		    (nfc->data & RXH_L4_B_0_1) ||
826 		    (nfc->data & RXH_L4_B_2_3))
827 			return -EINVAL;
828 		break;
829 	default:
830 		return -EINVAL;
831 	}
832 
833 	/* If something changed we need to update the MRQC register. Note that
834 	 * test_bit() is guaranteed to return strictly 0 or 1, so testing for
835 	 * equality is safe.
836 	 */
837 	if ((rss_ipv4_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
838 				      interface->flags)) ||
839 	    (rss_ipv6_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
840 				      interface->flags))) {
841 		struct fm10k_hw *hw = &interface->hw;
842 		bool warn = false;
843 		u32 mrqc;
844 
845 		/* Perform hash on these packet types */
846 		mrqc = FM10K_MRQC_IPV4 |
847 		       FM10K_MRQC_TCP_IPV4 |
848 		       FM10K_MRQC_IPV6 |
849 		       FM10K_MRQC_TCP_IPV6;
850 
851 		if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
852 			     interface->flags)) {
853 			mrqc |= FM10K_MRQC_UDP_IPV4;
854 			warn = true;
855 		}
856 		if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
857 			     interface->flags)) {
858 			mrqc |= FM10K_MRQC_UDP_IPV6;
859 			warn = true;
860 		}
861 
862 		/* If we enable UDP RSS display a warning that this may cause
863 		 * fragmented UDP packets to arrive out of order.
864 		 */
865 		if (warn)
866 			netif_warn(interface, drv, interface->netdev,
867 				   "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
868 
869 		fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
870 	}
871 
872 	return 0;
873 }
874 
fm10k_mbx_test(struct fm10k_intfc * interface,u64 * data)875 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data)
876 {
877 	struct fm10k_hw *hw = &interface->hw;
878 	struct fm10k_mbx_info *mbx = &hw->mbx;
879 	u32 attr_flag, test_msg[6];
880 	unsigned long timeout;
881 	int err = -EINVAL;
882 
883 	/* For now this is a VF only feature */
884 	if (hw->mac.type != fm10k_mac_vf)
885 		return 0;
886 
887 	/* loop through both nested and unnested attribute types */
888 	for (attr_flag = BIT(FM10K_TEST_MSG_UNSET);
889 	     attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED);
890 	     attr_flag += attr_flag) {
891 		/* generate message to be tested */
892 		fm10k_tlv_msg_test_create(test_msg, attr_flag);
893 
894 		fm10k_mbx_lock(interface);
895 		mbx->test_result = FM10K_NOT_IMPLEMENTED;
896 		err = mbx->ops.enqueue_tx(hw, mbx, test_msg);
897 		fm10k_mbx_unlock(interface);
898 
899 		/* wait up to 1 second for response */
900 		timeout = jiffies + HZ;
901 		do {
902 			if (err < 0)
903 				goto err_out;
904 
905 			usleep_range(500, 1000);
906 
907 			fm10k_mbx_lock(interface);
908 			mbx->ops.process(hw, mbx);
909 			fm10k_mbx_unlock(interface);
910 
911 			err = mbx->test_result;
912 			if (!err)
913 				break;
914 		} while (time_is_after_jiffies(timeout));
915 
916 		/* reporting errors */
917 		if (err)
918 			goto err_out;
919 	}
920 
921 err_out:
922 	*data = err < 0 ? (attr_flag) : (err > 0);
923 	return err;
924 }
925 
fm10k_self_test(struct net_device * dev,struct ethtool_test * eth_test,u64 * data)926 static void fm10k_self_test(struct net_device *dev,
927 			    struct ethtool_test *eth_test, u64 *data)
928 {
929 	struct fm10k_intfc *interface = netdev_priv(dev);
930 	struct fm10k_hw *hw = &interface->hw;
931 
932 	memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
933 
934 	if (FM10K_REMOVED(hw->hw_addr)) {
935 		netif_err(interface, drv, dev,
936 			  "Interface removed - test blocked\n");
937 		eth_test->flags |= ETH_TEST_FL_FAILED;
938 		return;
939 	}
940 
941 	if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX]))
942 		eth_test->flags |= ETH_TEST_FL_FAILED;
943 }
944 
fm10k_get_priv_flags(struct net_device * netdev)945 static u32 fm10k_get_priv_flags(struct net_device *netdev)
946 {
947 	return 0;
948 }
949 
fm10k_set_priv_flags(struct net_device * netdev,u32 priv_flags)950 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags)
951 {
952 	if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN))
953 		return -EINVAL;
954 
955 	return 0;
956 }
957 
fm10k_get_reta_size(struct net_device __always_unused * netdev)958 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev)
959 {
960 	return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
961 }
962 
fm10k_write_reta(struct fm10k_intfc * interface,const u32 * indir)963 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir)
964 {
965 	u16 rss_i = interface->ring_feature[RING_F_RSS].indices;
966 	struct fm10k_hw *hw = &interface->hw;
967 	u32 table[4];
968 	int i, j;
969 
970 	/* record entries to reta table */
971 	for (i = 0; i < FM10K_RETA_SIZE; i++) {
972 		u32 reta, n;
973 
974 		/* generate a new table if we weren't given one */
975 		for (j = 0; j < 4; j++) {
976 			if (indir)
977 				n = indir[4 * i + j];
978 			else
979 				n = ethtool_rxfh_indir_default(4 * i + j,
980 							       rss_i);
981 
982 			table[j] = n;
983 		}
984 
985 		reta = table[0] |
986 			(table[1] << 8) |
987 			(table[2] << 16) |
988 			(table[3] << 24);
989 
990 		if (interface->reta[i] == reta)
991 			continue;
992 
993 		interface->reta[i] = reta;
994 		fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
995 	}
996 }
997 
fm10k_get_reta(struct net_device * netdev,u32 * indir)998 static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
999 {
1000 	struct fm10k_intfc *interface = netdev_priv(netdev);
1001 	int i;
1002 
1003 	if (!indir)
1004 		return 0;
1005 
1006 	for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
1007 		u32 reta = interface->reta[i];
1008 
1009 		indir[0] = (reta << 24) >> 24;
1010 		indir[1] = (reta << 16) >> 24;
1011 		indir[2] = (reta <<  8) >> 24;
1012 		indir[3] = (reta) >> 24;
1013 	}
1014 
1015 	return 0;
1016 }
1017 
fm10k_set_reta(struct net_device * netdev,const u32 * indir)1018 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
1019 {
1020 	struct fm10k_intfc *interface = netdev_priv(netdev);
1021 	int i;
1022 	u16 rss_i;
1023 
1024 	if (!indir)
1025 		return 0;
1026 
1027 	/* Verify user input. */
1028 	rss_i = interface->ring_feature[RING_F_RSS].indices;
1029 	for (i = fm10k_get_reta_size(netdev); i--;) {
1030 		if (indir[i] < rss_i)
1031 			continue;
1032 		return -EINVAL;
1033 	}
1034 
1035 	fm10k_write_reta(interface, indir);
1036 
1037 	return 0;
1038 }
1039 
fm10k_get_rssrk_size(struct net_device __always_unused * netdev)1040 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev)
1041 {
1042 	return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
1043 }
1044 
fm10k_get_rssh(struct net_device * netdev,struct ethtool_rxfh_param * rxfh)1045 static int fm10k_get_rssh(struct net_device *netdev,
1046 			  struct ethtool_rxfh_param *rxfh)
1047 {
1048 	struct fm10k_intfc *interface = netdev_priv(netdev);
1049 	u8 *key = rxfh->key;
1050 	int i, err;
1051 
1052 	rxfh->hfunc = ETH_RSS_HASH_TOP;
1053 
1054 	err = fm10k_get_reta(netdev, rxfh->indir);
1055 	if (err || !key)
1056 		return err;
1057 
1058 	for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
1059 		*(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
1060 
1061 	return 0;
1062 }
1063 
fm10k_set_rssh(struct net_device * netdev,struct ethtool_rxfh_param * rxfh,struct netlink_ext_ack * extack)1064 static int fm10k_set_rssh(struct net_device *netdev,
1065 			  struct ethtool_rxfh_param *rxfh,
1066 			  struct netlink_ext_ack *extack)
1067 {
1068 	struct fm10k_intfc *interface = netdev_priv(netdev);
1069 	struct fm10k_hw *hw = &interface->hw;
1070 	int i, err;
1071 
1072 	/* We do not allow change in unsupported parameters */
1073 	if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
1074 	    rxfh->hfunc != ETH_RSS_HASH_TOP)
1075 		return -EOPNOTSUPP;
1076 
1077 	err = fm10k_set_reta(netdev, rxfh->indir);
1078 	if (err || !rxfh->key)
1079 		return err;
1080 
1081 	for (i = 0; i < FM10K_RSSRK_SIZE; i++, rxfh->key += 4) {
1082 		u32 rssrk = le32_to_cpu(*(__le32 *)rxfh->key);
1083 
1084 		if (interface->rssrk[i] == rssrk)
1085 			continue;
1086 
1087 		interface->rssrk[i] = rssrk;
1088 		fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
1089 	}
1090 
1091 	return 0;
1092 }
1093 
fm10k_max_channels(struct net_device * dev)1094 static unsigned int fm10k_max_channels(struct net_device *dev)
1095 {
1096 	struct fm10k_intfc *interface = netdev_priv(dev);
1097 	unsigned int max_combined = interface->hw.mac.max_queues;
1098 	u8 tcs = netdev_get_num_tc(dev);
1099 
1100 	/* For QoS report channels per traffic class */
1101 	if (tcs > 1)
1102 		max_combined = BIT((fls(max_combined / tcs) - 1));
1103 
1104 	return max_combined;
1105 }
1106 
fm10k_get_channels(struct net_device * dev,struct ethtool_channels * ch)1107 static void fm10k_get_channels(struct net_device *dev,
1108 			       struct ethtool_channels *ch)
1109 {
1110 	struct fm10k_intfc *interface = netdev_priv(dev);
1111 
1112 	/* report maximum channels */
1113 	ch->max_combined = fm10k_max_channels(dev);
1114 
1115 	/* report info for other vector */
1116 	ch->max_other = NON_Q_VECTORS;
1117 	ch->other_count = ch->max_other;
1118 
1119 	/* record RSS queues */
1120 	ch->combined_count = interface->ring_feature[RING_F_RSS].indices;
1121 }
1122 
fm10k_set_channels(struct net_device * dev,struct ethtool_channels * ch)1123 static int fm10k_set_channels(struct net_device *dev,
1124 			      struct ethtool_channels *ch)
1125 {
1126 	struct fm10k_intfc *interface = netdev_priv(dev);
1127 	unsigned int count = ch->combined_count;
1128 
1129 	/* verify they are not requesting separate vectors */
1130 	if (!count || ch->rx_count || ch->tx_count)
1131 		return -EINVAL;
1132 
1133 	/* verify other_count has not changed */
1134 	if (ch->other_count != NON_Q_VECTORS)
1135 		return -EINVAL;
1136 
1137 	/* verify the number of channels does not exceed hardware limits */
1138 	if (count > fm10k_max_channels(dev))
1139 		return -EINVAL;
1140 
1141 	interface->ring_feature[RING_F_RSS].limit = count;
1142 
1143 	/* use setup TC to update any traffic class queue mapping */
1144 	return fm10k_setup_tc(dev, netdev_get_num_tc(dev));
1145 }
1146 
1147 static const struct ethtool_ops fm10k_ethtool_ops = {
1148 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1149 				     ETHTOOL_COALESCE_USE_ADAPTIVE,
1150 	.get_strings		= fm10k_get_strings,
1151 	.get_sset_count		= fm10k_get_sset_count,
1152 	.get_ethtool_stats      = fm10k_get_ethtool_stats,
1153 	.get_drvinfo		= fm10k_get_drvinfo,
1154 	.get_link		= ethtool_op_get_link,
1155 	.get_pauseparam		= fm10k_get_pauseparam,
1156 	.set_pauseparam		= fm10k_set_pauseparam,
1157 	.get_msglevel		= fm10k_get_msglevel,
1158 	.set_msglevel		= fm10k_set_msglevel,
1159 	.get_ringparam		= fm10k_get_ringparam,
1160 	.set_ringparam		= fm10k_set_ringparam,
1161 	.get_coalesce		= fm10k_get_coalesce,
1162 	.set_coalesce		= fm10k_set_coalesce,
1163 	.get_rxnfc		= fm10k_get_rxnfc,
1164 	.get_regs               = fm10k_get_regs,
1165 	.get_regs_len           = fm10k_get_regs_len,
1166 	.self_test		= fm10k_self_test,
1167 	.get_priv_flags		= fm10k_get_priv_flags,
1168 	.set_priv_flags		= fm10k_set_priv_flags,
1169 	.get_rxfh_indir_size	= fm10k_get_reta_size,
1170 	.get_rxfh_key_size	= fm10k_get_rssrk_size,
1171 	.get_rxfh		= fm10k_get_rssh,
1172 	.set_rxfh		= fm10k_set_rssh,
1173 	.get_rxfh_fields	= fm10k_get_rssh_fields,
1174 	.set_rxfh_fields	= fm10k_set_rssh_fields,
1175 	.get_channels		= fm10k_get_channels,
1176 	.set_channels		= fm10k_set_channels,
1177 	.get_ts_info		= ethtool_op_get_ts_info,
1178 };
1179 
fm10k_set_ethtool_ops(struct net_device * dev)1180 void fm10k_set_ethtool_ops(struct net_device *dev)
1181 {
1182 	dev->ethtool_ops = &fm10k_ethtool_ops;
1183 }
1184