1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3 
4 /* ethtool support for i40e */
5 
6 #include "i40e.h"
7 #include "i40e_diag.h"
8 #include "i40e_txrx_common.h"
9 
10 /* ethtool statistics helpers */
11 
12 /**
13  * struct i40e_stats - definition for an ethtool statistic
14  * @stat_string: statistic name to display in ethtool -S output
15  * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
16  * @stat_offset: offsetof() the stat from a base pointer
17  *
18  * This structure defines a statistic to be added to the ethtool stats buffer.
19  * It defines a statistic as offset from a common base pointer. Stats should
20  * be defined in constant arrays using the I40E_STAT macro, with every element
21  * of the array using the same _type for calculating the sizeof_stat and
22  * stat_offset.
23  *
24  * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
25  * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
26  * the i40e_add_ethtool_stat() helper function.
27  *
28  * The @stat_string is interpreted as a format string, allowing formatted
29  * values to be inserted while looping over multiple structures for a given
30  * statistics array. Thus, every statistic string in an array should have the
31  * same type and number of format specifiers, to be formatted by variadic
32  * arguments to the i40e_add_stat_string() helper function.
33  **/
34 struct i40e_stats {
35 	char stat_string[ETH_GSTRING_LEN];
36 	int sizeof_stat;
37 	int stat_offset;
38 };
39 
40 /* Helper macro to define an i40e_stat structure with proper size and type.
41  * Use this when defining constant statistics arrays. Note that @_type expects
42  * only a type name and is used multiple times.
43  */
44 #define I40E_STAT(_type, _name, _stat) { \
45 	.stat_string = _name, \
46 	.sizeof_stat = sizeof_field(_type, _stat), \
47 	.stat_offset = offsetof(_type, _stat) \
48 }
49 
50 /* Helper macro for defining some statistics directly copied from the netdev
51  * stats structure.
52  */
53 #define I40E_NETDEV_STAT(_net_stat) \
54 	I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
55 
56 /* Helper macro for defining some statistics related to queues */
57 #define I40E_QUEUE_STAT(_name, _stat) \
58 	I40E_STAT(struct i40e_ring, _name, _stat)
59 
60 /* Stats associated with a Tx or Rx ring */
61 static const struct i40e_stats i40e_gstrings_queue_stats[] = {
62 	I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
63 	I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
64 };
65 
66 /**
67  * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
68  * @data: location to store the stat value
69  * @pointer: basis for where to copy from
70  * @stat: the stat definition
71  *
72  * Copies the stat data defined by the pointer and stat structure pair into
73  * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
74  * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
75  */
76 static void
77 i40e_add_one_ethtool_stat(u64 *data, void *pointer,
78 			  const struct i40e_stats *stat)
79 {
80 	char *p;
81 
82 	if (!pointer) {
83 		/* ensure that the ethtool data buffer is zero'd for any stats
84 		 * which don't have a valid pointer.
85 		 */
86 		*data = 0;
87 		return;
88 	}
89 
90 	p = (char *)pointer + stat->stat_offset;
91 	switch (stat->sizeof_stat) {
92 	case sizeof(u64):
93 		*data = *((u64 *)p);
94 		break;
95 	case sizeof(u32):
96 		*data = *((u32 *)p);
97 		break;
98 	case sizeof(u16):
99 		*data = *((u16 *)p);
100 		break;
101 	case sizeof(u8):
102 		*data = *((u8 *)p);
103 		break;
104 	default:
105 		WARN_ONCE(1, "unexpected stat size for %s",
106 			  stat->stat_string);
107 		*data = 0;
108 	}
109 }
110 
111 /**
112  * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
113  * @data: ethtool stats buffer
114  * @pointer: location to copy stats from
115  * @stats: array of stats to copy
116  * @size: the size of the stats definition
117  *
118  * Copy the stats defined by the stats array using the pointer as a base into
119  * the data buffer supplied by ethtool. Updates the data pointer to point to
120  * the next empty location for successive calls to __i40e_add_ethtool_stats.
121  * If pointer is null, set the data values to zero and update the pointer to
122  * skip these stats.
123  **/
124 static void
125 __i40e_add_ethtool_stats(u64 **data, void *pointer,
126 			 const struct i40e_stats stats[],
127 			 const unsigned int size)
128 {
129 	unsigned int i;
130 
131 	for (i = 0; i < size; i++)
132 		i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
133 }
134 
135 /**
136  * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
137  * @data: ethtool stats buffer
138  * @pointer: location where stats are stored
139  * @stats: static const array of stat definitions
140  *
141  * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
142  * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
143  * ensuring that we pass the size associated with the given stats array.
144  *
145  * The parameter @stats is evaluated twice, so parameters with side effects
146  * should be avoided.
147  **/
148 #define i40e_add_ethtool_stats(data, pointer, stats) \
149 	__i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
150 
151 /**
152  * i40e_add_queue_stats - copy queue statistics into supplied buffer
153  * @data: ethtool stats buffer
154  * @ring: the ring to copy
155  *
156  * Queue statistics must be copied while protected by
157  * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
158  * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
159  * ring pointer is null, zero out the queue stat values and update the data
160  * pointer. Otherwise safely copy the stats from the ring into the supplied
161  * buffer and update the data pointer when finished.
162  *
163  * This function expects to be called while under rcu_read_lock().
164  **/
165 static void
166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
167 {
168 	const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
169 	const struct i40e_stats *stats = i40e_gstrings_queue_stats;
170 	unsigned int start;
171 	unsigned int i;
172 
173 	/* To avoid invalid statistics values, ensure that we keep retrying
174 	 * the copy until we get a consistent value according to
175 	 * u64_stats_fetch_retry_irq. But first, make sure our ring is
176 	 * non-null before attempting to access its syncp.
177 	 */
178 	do {
179 		start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
180 		for (i = 0; i < size; i++) {
181 			i40e_add_one_ethtool_stat(&(*data)[i], ring,
182 						  &stats[i]);
183 		}
184 	} while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
185 
186 	/* Once we successfully copy the stats in, update the data pointer */
187 	*data += size;
188 }
189 
190 /**
191  * __i40e_add_stat_strings - copy stat strings into ethtool buffer
192  * @p: ethtool supplied buffer
193  * @stats: stat definitions array
194  * @size: size of the stats array
195  *
196  * Format and copy the strings described by stats into the buffer pointed at
197  * by p.
198  **/
199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
200 				    const unsigned int size, ...)
201 {
202 	unsigned int i;
203 
204 	for (i = 0; i < size; i++) {
205 		va_list args;
206 
207 		va_start(args, size);
208 		vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
209 		*p += ETH_GSTRING_LEN;
210 		va_end(args);
211 	}
212 }
213 
214 /**
215  * i40e_add_stat_strings - copy stat strings into ethtool buffer
216  * @p: ethtool supplied buffer
217  * @stats: stat definitions array
218  *
219  * Format and copy the strings described by the const static stats value into
220  * the buffer pointed at by p.
221  *
222  * The parameter @stats is evaluated twice, so parameters with side effects
223  * should be avoided. Additionally, stats must be an array such that
224  * ARRAY_SIZE can be called on it.
225  **/
226 #define i40e_add_stat_strings(p, stats, ...) \
227 	__i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
228 
229 #define I40E_PF_STAT(_name, _stat) \
230 	I40E_STAT(struct i40e_pf, _name, _stat)
231 #define I40E_VSI_STAT(_name, _stat) \
232 	I40E_STAT(struct i40e_vsi, _name, _stat)
233 #define I40E_VEB_STAT(_name, _stat) \
234 	I40E_STAT(struct i40e_veb, _name, _stat)
235 #define I40E_VEB_TC_STAT(_name, _stat) \
236 	I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
237 #define I40E_PFC_STAT(_name, _stat) \
238 	I40E_STAT(struct i40e_pfc_stats, _name, _stat)
239 #define I40E_QUEUE_STAT(_name, _stat) \
240 	I40E_STAT(struct i40e_ring, _name, _stat)
241 
242 static const struct i40e_stats i40e_gstrings_net_stats[] = {
243 	I40E_NETDEV_STAT(rx_packets),
244 	I40E_NETDEV_STAT(tx_packets),
245 	I40E_NETDEV_STAT(rx_bytes),
246 	I40E_NETDEV_STAT(tx_bytes),
247 	I40E_NETDEV_STAT(rx_errors),
248 	I40E_NETDEV_STAT(tx_errors),
249 	I40E_NETDEV_STAT(rx_dropped),
250 	I40E_NETDEV_STAT(tx_dropped),
251 	I40E_NETDEV_STAT(collisions),
252 	I40E_NETDEV_STAT(rx_length_errors),
253 	I40E_NETDEV_STAT(rx_crc_errors),
254 };
255 
256 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
257 	I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
258 	I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
259 	I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
260 	I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
261 	I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
262 	I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
263 	I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
264 	I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
265 	I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
266 	I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
267 	I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
268 	I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
269 };
270 
271 struct i40e_cp_veb_tc_stats {
272 	u64 tc_rx_packets;
273 	u64 tc_rx_bytes;
274 	u64 tc_tx_packets;
275 	u64 tc_tx_bytes;
276 };
277 
278 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
279 	I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
280 	I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
281 	I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
282 	I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
283 };
284 
285 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
286 	I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
287 	I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
288 	I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
289 	I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
290 	I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
291 	I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
292 	I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
293 	I40E_VSI_STAT("tx_linearize", tx_linearize),
294 	I40E_VSI_STAT("tx_force_wb", tx_force_wb),
295 	I40E_VSI_STAT("tx_busy", tx_busy),
296 	I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
297 	I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
298 };
299 
300 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
301  * but they are separate.  This device supports Virtualization, and
302  * as such might have several netdevs supporting VMDq and FCoE going
303  * through a single port.  The NETDEV_STATs are for individual netdevs
304  * seen at the top of the stack, and the PF_STATs are for the physical
305  * function at the bottom of the stack hosting those netdevs.
306  *
307  * The PF_STATs are appended to the netdev stats only when ethtool -S
308  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
309  */
310 static const struct i40e_stats i40e_gstrings_stats[] = {
311 	I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
312 	I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
313 	I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
314 	I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
315 	I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
316 	I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
317 	I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
318 	I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
319 	I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
320 	I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
321 	I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
322 	I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
323 	I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
324 	I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
325 	I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
326 	I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
327 	I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
328 	I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
329 	I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
330 	I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
331 	I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
332 	I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
333 	I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
334 	I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
335 	I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
336 	I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
337 	I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
338 	I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
339 	I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
340 	I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
341 	I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
342 	I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
343 	I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
344 	I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
345 	I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
346 	I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
347 	I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
348 	I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
349 	I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
350 	I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
351 	I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
352 	I40E_PF_STAT("port.arq_overflows", arq_overflows),
353 	I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
354 	I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
355 	I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
356 	I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
357 	I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
358 	I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
359 	I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
360 	I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
361 	I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
362 
363 	/* LPI stats */
364 	I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
365 	I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
366 	I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
367 	I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
368 };
369 
370 struct i40e_pfc_stats {
371 	u64 priority_xon_rx;
372 	u64 priority_xoff_rx;
373 	u64 priority_xon_tx;
374 	u64 priority_xoff_tx;
375 	u64 priority_xon_2_xoff;
376 };
377 
378 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
379 	I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
380 	I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
381 	I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
382 	I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
383 	I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
384 };
385 
386 #define I40E_NETDEV_STATS_LEN	ARRAY_SIZE(i40e_gstrings_net_stats)
387 
388 #define I40E_MISC_STATS_LEN	ARRAY_SIZE(i40e_gstrings_misc_stats)
389 
390 #define I40E_VSI_STATS_LEN	(I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
391 
392 #define I40E_PFC_STATS_LEN	(ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
393 				 I40E_MAX_USER_PRIORITY)
394 
395 #define I40E_VEB_STATS_LEN	(ARRAY_SIZE(i40e_gstrings_veb_stats) + \
396 				 (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
397 				  I40E_MAX_TRAFFIC_CLASS))
398 
399 #define I40E_GLOBAL_STATS_LEN	ARRAY_SIZE(i40e_gstrings_stats)
400 
401 #define I40E_PF_STATS_LEN	(I40E_GLOBAL_STATS_LEN + \
402 				 I40E_PFC_STATS_LEN + \
403 				 I40E_VEB_STATS_LEN + \
404 				 I40E_VSI_STATS_LEN)
405 
406 /* Length of stats for a single queue */
407 #define I40E_QUEUE_STATS_LEN	ARRAY_SIZE(i40e_gstrings_queue_stats)
408 
409 enum i40e_ethtool_test_id {
410 	I40E_ETH_TEST_REG = 0,
411 	I40E_ETH_TEST_EEPROM,
412 	I40E_ETH_TEST_INTR,
413 	I40E_ETH_TEST_LINK,
414 };
415 
416 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
417 	"Register test  (offline)",
418 	"Eeprom test    (offline)",
419 	"Interrupt test (offline)",
420 	"Link test   (on/offline)"
421 };
422 
423 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
424 
425 struct i40e_priv_flags {
426 	char flag_string[ETH_GSTRING_LEN];
427 	u64 flag;
428 	bool read_only;
429 };
430 
431 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
432 	.flag_string = _name, \
433 	.flag = _flag, \
434 	.read_only = _read_only, \
435 }
436 
437 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
438 	/* NOTE: MFP setting cannot be changed */
439 	I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
440 	I40E_PRIV_FLAG("total-port-shutdown",
441 		       I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1),
442 	I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
443 	I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
444 	I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
445 	I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
446 	I40E_PRIV_FLAG("link-down-on-close",
447 		       I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
448 	I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
449 	I40E_PRIV_FLAG("disable-source-pruning",
450 		       I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
451 	I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
452 	I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
453 	I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
454 };
455 
456 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
457 
458 /* Private flags with a global effect, restricted to PF 0 */
459 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
460 	I40E_PRIV_FLAG("vf-true-promisc-support",
461 		       I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
462 };
463 
464 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
465 
466 /**
467  * i40e_partition_setting_complaint - generic complaint for MFP restriction
468  * @pf: the PF struct
469  **/
470 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
471 {
472 	dev_info(&pf->pdev->dev,
473 		 "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
474 }
475 
476 /**
477  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
478  * @pf: PF struct with phy_types
479  * @ks: ethtool link ksettings struct to fill out
480  *
481  **/
482 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
483 				     struct ethtool_link_ksettings *ks)
484 {
485 	struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
486 	u64 phy_types = pf->hw.phy.phy_types;
487 
488 	ethtool_link_ksettings_zero_link_mode(ks, supported);
489 	ethtool_link_ksettings_zero_link_mode(ks, advertising);
490 
491 	if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
492 		ethtool_link_ksettings_add_link_mode(ks, supported,
493 						     1000baseT_Full);
494 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
495 			ethtool_link_ksettings_add_link_mode(ks, advertising,
496 							     1000baseT_Full);
497 		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
498 			ethtool_link_ksettings_add_link_mode(ks, supported,
499 							     100baseT_Full);
500 			ethtool_link_ksettings_add_link_mode(ks, advertising,
501 							     100baseT_Full);
502 		}
503 	}
504 	if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
505 	    phy_types & I40E_CAP_PHY_TYPE_XFI ||
506 	    phy_types & I40E_CAP_PHY_TYPE_SFI ||
507 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
508 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
509 		ethtool_link_ksettings_add_link_mode(ks, supported,
510 						     10000baseT_Full);
511 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
512 			ethtool_link_ksettings_add_link_mode(ks, advertising,
513 							     10000baseT_Full);
514 	}
515 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
516 		ethtool_link_ksettings_add_link_mode(ks, supported,
517 						     10000baseT_Full);
518 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
519 			ethtool_link_ksettings_add_link_mode(ks, advertising,
520 							     10000baseT_Full);
521 	}
522 	if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
523 		ethtool_link_ksettings_add_link_mode(ks, supported,
524 						     2500baseT_Full);
525 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
526 			ethtool_link_ksettings_add_link_mode(ks, advertising,
527 							     2500baseT_Full);
528 	}
529 	if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
530 		ethtool_link_ksettings_add_link_mode(ks, supported,
531 						     5000baseT_Full);
532 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
533 			ethtool_link_ksettings_add_link_mode(ks, advertising,
534 							     5000baseT_Full);
535 	}
536 	if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
537 	    phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
538 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
539 		ethtool_link_ksettings_add_link_mode(ks, supported,
540 						     40000baseCR4_Full);
541 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
542 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
543 		ethtool_link_ksettings_add_link_mode(ks, supported,
544 						     40000baseCR4_Full);
545 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
546 			ethtool_link_ksettings_add_link_mode(ks, advertising,
547 							     40000baseCR4_Full);
548 	}
549 	if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
550 		ethtool_link_ksettings_add_link_mode(ks, supported,
551 						     100baseT_Full);
552 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
553 			ethtool_link_ksettings_add_link_mode(ks, advertising,
554 							     100baseT_Full);
555 	}
556 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
557 		ethtool_link_ksettings_add_link_mode(ks, supported,
558 						     1000baseT_Full);
559 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
560 			ethtool_link_ksettings_add_link_mode(ks, advertising,
561 							     1000baseT_Full);
562 	}
563 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
564 		ethtool_link_ksettings_add_link_mode(ks, supported,
565 						     40000baseSR4_Full);
566 		ethtool_link_ksettings_add_link_mode(ks, advertising,
567 						     40000baseSR4_Full);
568 	}
569 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
570 		ethtool_link_ksettings_add_link_mode(ks, supported,
571 						     40000baseLR4_Full);
572 		ethtool_link_ksettings_add_link_mode(ks, advertising,
573 						     40000baseLR4_Full);
574 	}
575 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
576 		ethtool_link_ksettings_add_link_mode(ks, supported,
577 						     40000baseKR4_Full);
578 		ethtool_link_ksettings_add_link_mode(ks, advertising,
579 						     40000baseKR4_Full);
580 	}
581 	if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
582 		ethtool_link_ksettings_add_link_mode(ks, supported,
583 						     20000baseKR2_Full);
584 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
585 			ethtool_link_ksettings_add_link_mode(ks, advertising,
586 							     20000baseKR2_Full);
587 	}
588 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
589 		ethtool_link_ksettings_add_link_mode(ks, supported,
590 						     10000baseKX4_Full);
591 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
592 			ethtool_link_ksettings_add_link_mode(ks, advertising,
593 							     10000baseKX4_Full);
594 	}
595 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
596 	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
597 		ethtool_link_ksettings_add_link_mode(ks, supported,
598 						     10000baseKR_Full);
599 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
600 			ethtool_link_ksettings_add_link_mode(ks, advertising,
601 							     10000baseKR_Full);
602 	}
603 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
604 	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
605 		ethtool_link_ksettings_add_link_mode(ks, supported,
606 						     1000baseKX_Full);
607 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
608 			ethtool_link_ksettings_add_link_mode(ks, advertising,
609 							     1000baseKX_Full);
610 	}
611 	/* need to add 25G PHY types */
612 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
613 		ethtool_link_ksettings_add_link_mode(ks, supported,
614 						     25000baseKR_Full);
615 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
616 			ethtool_link_ksettings_add_link_mode(ks, advertising,
617 							     25000baseKR_Full);
618 	}
619 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
620 		ethtool_link_ksettings_add_link_mode(ks, supported,
621 						     25000baseCR_Full);
622 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
623 			ethtool_link_ksettings_add_link_mode(ks, advertising,
624 							     25000baseCR_Full);
625 	}
626 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
627 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
628 		ethtool_link_ksettings_add_link_mode(ks, supported,
629 						     25000baseSR_Full);
630 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
631 			ethtool_link_ksettings_add_link_mode(ks, advertising,
632 							     25000baseSR_Full);
633 	}
634 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
635 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
636 		ethtool_link_ksettings_add_link_mode(ks, supported,
637 						     25000baseCR_Full);
638 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
639 			ethtool_link_ksettings_add_link_mode(ks, advertising,
640 							     25000baseCR_Full);
641 	}
642 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
643 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
644 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
645 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
646 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
647 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
648 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
649 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
650 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
651 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
652 			ethtool_link_ksettings_add_link_mode(ks, advertising,
653 							     FEC_NONE);
654 			ethtool_link_ksettings_add_link_mode(ks, advertising,
655 							     FEC_RS);
656 			ethtool_link_ksettings_add_link_mode(ks, advertising,
657 							     FEC_BASER);
658 		}
659 	}
660 	/* need to add new 10G PHY types */
661 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
662 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
663 		ethtool_link_ksettings_add_link_mode(ks, supported,
664 						     10000baseCR_Full);
665 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
666 			ethtool_link_ksettings_add_link_mode(ks, advertising,
667 							     10000baseCR_Full);
668 	}
669 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
670 		ethtool_link_ksettings_add_link_mode(ks, supported,
671 						     10000baseSR_Full);
672 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
673 			ethtool_link_ksettings_add_link_mode(ks, advertising,
674 							     10000baseSR_Full);
675 	}
676 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
677 		ethtool_link_ksettings_add_link_mode(ks, supported,
678 						     10000baseLR_Full);
679 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
680 			ethtool_link_ksettings_add_link_mode(ks, advertising,
681 							     10000baseLR_Full);
682 	}
683 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
684 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
685 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
686 		ethtool_link_ksettings_add_link_mode(ks, supported,
687 						     1000baseX_Full);
688 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
689 			ethtool_link_ksettings_add_link_mode(ks, advertising,
690 							     1000baseX_Full);
691 	}
692 	/* Autoneg PHY types */
693 	if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
694 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
695 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
696 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
697 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
698 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
699 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
700 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
701 	    phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
702 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
703 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
704 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
705 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
706 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
707 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
708 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
709 	    phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
710 	    phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
711 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
712 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
713 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
714 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
715 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
716 	    phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
717 		ethtool_link_ksettings_add_link_mode(ks, supported,
718 						     Autoneg);
719 		ethtool_link_ksettings_add_link_mode(ks, advertising,
720 						     Autoneg);
721 	}
722 }
723 
724 /**
725  * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
726  * @req_fec_info: mask request FEC info
727  * @ks: ethtool ksettings to fill in
728  **/
729 static void i40e_get_settings_link_up_fec(u8 req_fec_info,
730 					  struct ethtool_link_ksettings *ks)
731 {
732 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
733 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
734 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
735 
736 	if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
737 	    (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
738 		ethtool_link_ksettings_add_link_mode(ks, advertising,
739 						     FEC_NONE);
740 		ethtool_link_ksettings_add_link_mode(ks, advertising,
741 						     FEC_BASER);
742 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
743 	} else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
744 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
745 	} else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
746 		ethtool_link_ksettings_add_link_mode(ks, advertising,
747 						     FEC_BASER);
748 	} else {
749 		ethtool_link_ksettings_add_link_mode(ks, advertising,
750 						     FEC_NONE);
751 	}
752 }
753 
754 /**
755  * i40e_get_settings_link_up - Get the Link settings for when link is up
756  * @hw: hw structure
757  * @ks: ethtool ksettings to fill in
758  * @netdev: network interface device structure
759  * @pf: pointer to physical function struct
760  **/
761 static void i40e_get_settings_link_up(struct i40e_hw *hw,
762 				      struct ethtool_link_ksettings *ks,
763 				      struct net_device *netdev,
764 				      struct i40e_pf *pf)
765 {
766 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
767 	struct ethtool_link_ksettings cap_ksettings;
768 	u32 link_speed = hw_link_info->link_speed;
769 
770 	/* Initialize supported and advertised settings based on phy settings */
771 	switch (hw_link_info->phy_type) {
772 	case I40E_PHY_TYPE_40GBASE_CR4:
773 	case I40E_PHY_TYPE_40GBASE_CR4_CU:
774 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
775 		ethtool_link_ksettings_add_link_mode(ks, supported,
776 						     40000baseCR4_Full);
777 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
778 		ethtool_link_ksettings_add_link_mode(ks, advertising,
779 						     40000baseCR4_Full);
780 		break;
781 	case I40E_PHY_TYPE_XLAUI:
782 	case I40E_PHY_TYPE_XLPPI:
783 	case I40E_PHY_TYPE_40GBASE_AOC:
784 		ethtool_link_ksettings_add_link_mode(ks, supported,
785 						     40000baseCR4_Full);
786 		ethtool_link_ksettings_add_link_mode(ks, advertising,
787 						     40000baseCR4_Full);
788 		break;
789 	case I40E_PHY_TYPE_40GBASE_SR4:
790 		ethtool_link_ksettings_add_link_mode(ks, supported,
791 						     40000baseSR4_Full);
792 		ethtool_link_ksettings_add_link_mode(ks, advertising,
793 						     40000baseSR4_Full);
794 		break;
795 	case I40E_PHY_TYPE_40GBASE_LR4:
796 		ethtool_link_ksettings_add_link_mode(ks, supported,
797 						     40000baseLR4_Full);
798 		ethtool_link_ksettings_add_link_mode(ks, advertising,
799 						     40000baseLR4_Full);
800 		break;
801 	case I40E_PHY_TYPE_25GBASE_SR:
802 	case I40E_PHY_TYPE_25GBASE_LR:
803 	case I40E_PHY_TYPE_10GBASE_SR:
804 	case I40E_PHY_TYPE_10GBASE_LR:
805 	case I40E_PHY_TYPE_1000BASE_SX:
806 	case I40E_PHY_TYPE_1000BASE_LX:
807 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
808 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
809 		ethtool_link_ksettings_add_link_mode(ks, supported,
810 						     25000baseSR_Full);
811 		ethtool_link_ksettings_add_link_mode(ks, advertising,
812 						     25000baseSR_Full);
813 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
814 		ethtool_link_ksettings_add_link_mode(ks, supported,
815 						     10000baseSR_Full);
816 		ethtool_link_ksettings_add_link_mode(ks, advertising,
817 						     10000baseSR_Full);
818 		ethtool_link_ksettings_add_link_mode(ks, supported,
819 						     10000baseLR_Full);
820 		ethtool_link_ksettings_add_link_mode(ks, advertising,
821 						     10000baseLR_Full);
822 		ethtool_link_ksettings_add_link_mode(ks, supported,
823 						     1000baseX_Full);
824 		ethtool_link_ksettings_add_link_mode(ks, advertising,
825 						     1000baseX_Full);
826 		ethtool_link_ksettings_add_link_mode(ks, supported,
827 						     10000baseT_Full);
828 		if (hw_link_info->module_type[2] &
829 		    I40E_MODULE_TYPE_1000BASE_SX ||
830 		    hw_link_info->module_type[2] &
831 		    I40E_MODULE_TYPE_1000BASE_LX) {
832 			ethtool_link_ksettings_add_link_mode(ks, supported,
833 							     1000baseT_Full);
834 			if (hw_link_info->requested_speeds &
835 			    I40E_LINK_SPEED_1GB)
836 				ethtool_link_ksettings_add_link_mode(
837 				     ks, advertising, 1000baseT_Full);
838 		}
839 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
840 			ethtool_link_ksettings_add_link_mode(ks, advertising,
841 							     10000baseT_Full);
842 		break;
843 	case I40E_PHY_TYPE_10GBASE_T:
844 	case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
845 	case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
846 	case I40E_PHY_TYPE_1000BASE_T:
847 	case I40E_PHY_TYPE_100BASE_TX:
848 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
849 		ethtool_link_ksettings_add_link_mode(ks, supported,
850 						     10000baseT_Full);
851 		ethtool_link_ksettings_add_link_mode(ks, supported,
852 						     5000baseT_Full);
853 		ethtool_link_ksettings_add_link_mode(ks, supported,
854 						     2500baseT_Full);
855 		ethtool_link_ksettings_add_link_mode(ks, supported,
856 						     1000baseT_Full);
857 		ethtool_link_ksettings_add_link_mode(ks, supported,
858 						     100baseT_Full);
859 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
860 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
861 			ethtool_link_ksettings_add_link_mode(ks, advertising,
862 							     10000baseT_Full);
863 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
864 			ethtool_link_ksettings_add_link_mode(ks, advertising,
865 							     5000baseT_Full);
866 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
867 			ethtool_link_ksettings_add_link_mode(ks, advertising,
868 							     2500baseT_Full);
869 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
870 			ethtool_link_ksettings_add_link_mode(ks, advertising,
871 							     1000baseT_Full);
872 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
873 			ethtool_link_ksettings_add_link_mode(ks, advertising,
874 							     100baseT_Full);
875 		break;
876 	case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
877 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
878 		ethtool_link_ksettings_add_link_mode(ks, supported,
879 						     1000baseT_Full);
880 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
881 		ethtool_link_ksettings_add_link_mode(ks, advertising,
882 						     1000baseT_Full);
883 		break;
884 	case I40E_PHY_TYPE_10GBASE_CR1_CU:
885 	case I40E_PHY_TYPE_10GBASE_CR1:
886 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
887 		ethtool_link_ksettings_add_link_mode(ks, supported,
888 						     10000baseT_Full);
889 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
890 		ethtool_link_ksettings_add_link_mode(ks, advertising,
891 						     10000baseT_Full);
892 		break;
893 	case I40E_PHY_TYPE_XAUI:
894 	case I40E_PHY_TYPE_XFI:
895 	case I40E_PHY_TYPE_SFI:
896 	case I40E_PHY_TYPE_10GBASE_SFPP_CU:
897 	case I40E_PHY_TYPE_10GBASE_AOC:
898 		ethtool_link_ksettings_add_link_mode(ks, supported,
899 						     10000baseT_Full);
900 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
901 			ethtool_link_ksettings_add_link_mode(ks, advertising,
902 							     10000baseT_Full);
903 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
904 		break;
905 	case I40E_PHY_TYPE_SGMII:
906 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
907 		ethtool_link_ksettings_add_link_mode(ks, supported,
908 						     1000baseT_Full);
909 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
910 			ethtool_link_ksettings_add_link_mode(ks, advertising,
911 							     1000baseT_Full);
912 		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
913 			ethtool_link_ksettings_add_link_mode(ks, supported,
914 							     100baseT_Full);
915 			if (hw_link_info->requested_speeds &
916 			    I40E_LINK_SPEED_100MB)
917 				ethtool_link_ksettings_add_link_mode(
918 				      ks, advertising, 100baseT_Full);
919 		}
920 		break;
921 	case I40E_PHY_TYPE_40GBASE_KR4:
922 	case I40E_PHY_TYPE_25GBASE_KR:
923 	case I40E_PHY_TYPE_20GBASE_KR2:
924 	case I40E_PHY_TYPE_10GBASE_KR:
925 	case I40E_PHY_TYPE_10GBASE_KX4:
926 	case I40E_PHY_TYPE_1000BASE_KX:
927 		ethtool_link_ksettings_add_link_mode(ks, supported,
928 						     40000baseKR4_Full);
929 		ethtool_link_ksettings_add_link_mode(ks, supported,
930 						     25000baseKR_Full);
931 		ethtool_link_ksettings_add_link_mode(ks, supported,
932 						     20000baseKR2_Full);
933 		ethtool_link_ksettings_add_link_mode(ks, supported,
934 						     10000baseKR_Full);
935 		ethtool_link_ksettings_add_link_mode(ks, supported,
936 						     10000baseKX4_Full);
937 		ethtool_link_ksettings_add_link_mode(ks, supported,
938 						     1000baseKX_Full);
939 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
940 		ethtool_link_ksettings_add_link_mode(ks, advertising,
941 						     40000baseKR4_Full);
942 		ethtool_link_ksettings_add_link_mode(ks, advertising,
943 						     25000baseKR_Full);
944 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
945 		ethtool_link_ksettings_add_link_mode(ks, advertising,
946 						     20000baseKR2_Full);
947 		ethtool_link_ksettings_add_link_mode(ks, advertising,
948 						     10000baseKR_Full);
949 		ethtool_link_ksettings_add_link_mode(ks, advertising,
950 						     10000baseKX4_Full);
951 		ethtool_link_ksettings_add_link_mode(ks, advertising,
952 						     1000baseKX_Full);
953 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
954 		break;
955 	case I40E_PHY_TYPE_25GBASE_CR:
956 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
957 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
958 		ethtool_link_ksettings_add_link_mode(ks, supported,
959 						     25000baseCR_Full);
960 		ethtool_link_ksettings_add_link_mode(ks, advertising,
961 						     25000baseCR_Full);
962 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
963 
964 		break;
965 	case I40E_PHY_TYPE_25GBASE_AOC:
966 	case I40E_PHY_TYPE_25GBASE_ACC:
967 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
968 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
969 		ethtool_link_ksettings_add_link_mode(ks, supported,
970 						     25000baseCR_Full);
971 		ethtool_link_ksettings_add_link_mode(ks, advertising,
972 						     25000baseCR_Full);
973 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
974 
975 		ethtool_link_ksettings_add_link_mode(ks, supported,
976 						     10000baseCR_Full);
977 		ethtool_link_ksettings_add_link_mode(ks, advertising,
978 						     10000baseCR_Full);
979 		break;
980 	default:
981 		/* if we got here and link is up something bad is afoot */
982 		netdev_info(netdev,
983 			    "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
984 			    hw_link_info->phy_type);
985 	}
986 
987 	/* Now that we've worked out everything that could be supported by the
988 	 * current PHY type, get what is supported by the NVM and intersect
989 	 * them to get what is truly supported
990 	 */
991 	memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
992 	i40e_phy_type_to_ethtool(pf, &cap_ksettings);
993 	ethtool_intersect_link_masks(ks, &cap_ksettings);
994 
995 	/* Set speed and duplex */
996 	switch (link_speed) {
997 	case I40E_LINK_SPEED_40GB:
998 		ks->base.speed = SPEED_40000;
999 		break;
1000 	case I40E_LINK_SPEED_25GB:
1001 		ks->base.speed = SPEED_25000;
1002 		break;
1003 	case I40E_LINK_SPEED_20GB:
1004 		ks->base.speed = SPEED_20000;
1005 		break;
1006 	case I40E_LINK_SPEED_10GB:
1007 		ks->base.speed = SPEED_10000;
1008 		break;
1009 	case I40E_LINK_SPEED_5GB:
1010 		ks->base.speed = SPEED_5000;
1011 		break;
1012 	case I40E_LINK_SPEED_2_5GB:
1013 		ks->base.speed = SPEED_2500;
1014 		break;
1015 	case I40E_LINK_SPEED_1GB:
1016 		ks->base.speed = SPEED_1000;
1017 		break;
1018 	case I40E_LINK_SPEED_100MB:
1019 		ks->base.speed = SPEED_100;
1020 		break;
1021 	default:
1022 		ks->base.speed = SPEED_UNKNOWN;
1023 		break;
1024 	}
1025 	ks->base.duplex = DUPLEX_FULL;
1026 }
1027 
1028 /**
1029  * i40e_get_settings_link_down - Get the Link settings for when link is down
1030  * @hw: hw structure
1031  * @ks: ethtool ksettings to fill in
1032  * @pf: pointer to physical function struct
1033  *
1034  * Reports link settings that can be determined when link is down
1035  **/
1036 static void i40e_get_settings_link_down(struct i40e_hw *hw,
1037 					struct ethtool_link_ksettings *ks,
1038 					struct i40e_pf *pf)
1039 {
1040 	/* link is down and the driver needs to fall back on
1041 	 * supported phy types to figure out what info to display
1042 	 */
1043 	i40e_phy_type_to_ethtool(pf, ks);
1044 
1045 	/* With no link speed and duplex are unknown */
1046 	ks->base.speed = SPEED_UNKNOWN;
1047 	ks->base.duplex = DUPLEX_UNKNOWN;
1048 }
1049 
1050 /**
1051  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1052  * @netdev: network interface device structure
1053  * @ks: ethtool ksettings
1054  *
1055  * Reports speed/duplex settings based on media_type
1056  **/
1057 static int i40e_get_link_ksettings(struct net_device *netdev,
1058 				   struct ethtool_link_ksettings *ks)
1059 {
1060 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1061 	struct i40e_pf *pf = np->vsi->back;
1062 	struct i40e_hw *hw = &pf->hw;
1063 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1064 	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1065 
1066 	ethtool_link_ksettings_zero_link_mode(ks, supported);
1067 	ethtool_link_ksettings_zero_link_mode(ks, advertising);
1068 
1069 	if (link_up)
1070 		i40e_get_settings_link_up(hw, ks, netdev, pf);
1071 	else
1072 		i40e_get_settings_link_down(hw, ks, pf);
1073 
1074 	/* Now set the settings that don't rely on link being up/down */
1075 	/* Set autoneg settings */
1076 	ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1077 			    AUTONEG_ENABLE : AUTONEG_DISABLE);
1078 
1079 	/* Set media type settings */
1080 	switch (hw->phy.media_type) {
1081 	case I40E_MEDIA_TYPE_BACKPLANE:
1082 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1083 		ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1084 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1085 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1086 						     Backplane);
1087 		ks->base.port = PORT_NONE;
1088 		break;
1089 	case I40E_MEDIA_TYPE_BASET:
1090 		ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1091 		ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1092 		ks->base.port = PORT_TP;
1093 		break;
1094 	case I40E_MEDIA_TYPE_DA:
1095 	case I40E_MEDIA_TYPE_CX4:
1096 		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1097 		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1098 		ks->base.port = PORT_DA;
1099 		break;
1100 	case I40E_MEDIA_TYPE_FIBER:
1101 		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1102 		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1103 		ks->base.port = PORT_FIBRE;
1104 		break;
1105 	case I40E_MEDIA_TYPE_UNKNOWN:
1106 	default:
1107 		ks->base.port = PORT_OTHER;
1108 		break;
1109 	}
1110 
1111 	/* Set flow control settings */
1112 	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1113 	ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
1114 
1115 	switch (hw->fc.requested_mode) {
1116 	case I40E_FC_FULL:
1117 		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1118 		break;
1119 	case I40E_FC_TX_PAUSE:
1120 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1121 						     Asym_Pause);
1122 		break;
1123 	case I40E_FC_RX_PAUSE:
1124 		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1125 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1126 						     Asym_Pause);
1127 		break;
1128 	default:
1129 		ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1130 		ethtool_link_ksettings_del_link_mode(ks, advertising,
1131 						     Asym_Pause);
1132 		break;
1133 	}
1134 
1135 	return 0;
1136 }
1137 
1138 /**
1139  * i40e_set_link_ksettings - Set Speed and Duplex
1140  * @netdev: network interface device structure
1141  * @ks: ethtool ksettings
1142  *
1143  * Set speed/duplex per media_types advertised/forced
1144  **/
1145 static int i40e_set_link_ksettings(struct net_device *netdev,
1146 				   const struct ethtool_link_ksettings *ks)
1147 {
1148 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1149 	struct i40e_aq_get_phy_abilities_resp abilities;
1150 	struct ethtool_link_ksettings safe_ks;
1151 	struct ethtool_link_ksettings copy_ks;
1152 	struct i40e_aq_set_phy_config config;
1153 	struct i40e_pf *pf = np->vsi->back;
1154 	struct i40e_vsi *vsi = np->vsi;
1155 	struct i40e_hw *hw = &pf->hw;
1156 	bool autoneg_changed = false;
1157 	i40e_status status = 0;
1158 	int timeout = 50;
1159 	int err = 0;
1160 	u8 autoneg;
1161 
1162 	/* Changing port settings is not supported if this isn't the
1163 	 * port's controlling PF
1164 	 */
1165 	if (hw->partition_id != 1) {
1166 		i40e_partition_setting_complaint(pf);
1167 		return -EOPNOTSUPP;
1168 	}
1169 	if (vsi != pf->vsi[pf->lan_vsi])
1170 		return -EOPNOTSUPP;
1171 	if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1172 	    hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1173 	    hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1174 	    hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1175 	    hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1176 		return -EOPNOTSUPP;
1177 	if (hw->device_id == I40E_DEV_ID_KX_B ||
1178 	    hw->device_id == I40E_DEV_ID_KX_C ||
1179 	    hw->device_id == I40E_DEV_ID_20G_KR2 ||
1180 	    hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1181 	    hw->device_id == I40E_DEV_ID_25G_B ||
1182 	    hw->device_id == I40E_DEV_ID_KX_X722) {
1183 		netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1184 		return -EOPNOTSUPP;
1185 	}
1186 
1187 	/* copy the ksettings to copy_ks to avoid modifying the origin */
1188 	memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1189 
1190 	/* save autoneg out of ksettings */
1191 	autoneg = copy_ks.base.autoneg;
1192 
1193 	/* get our own copy of the bits to check against */
1194 	memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1195 	safe_ks.base.cmd = copy_ks.base.cmd;
1196 	safe_ks.base.link_mode_masks_nwords =
1197 		copy_ks.base.link_mode_masks_nwords;
1198 	i40e_get_link_ksettings(netdev, &safe_ks);
1199 
1200 	/* Get link modes supported by hardware and check against modes
1201 	 * requested by the user.  Return an error if unsupported mode was set.
1202 	 */
1203 	if (!bitmap_subset(copy_ks.link_modes.advertising,
1204 			   safe_ks.link_modes.supported,
1205 			   __ETHTOOL_LINK_MODE_MASK_NBITS))
1206 		return -EINVAL;
1207 
1208 	/* set autoneg back to what it currently is */
1209 	copy_ks.base.autoneg = safe_ks.base.autoneg;
1210 
1211 	/* If copy_ks.base and safe_ks.base are not the same now, then they are
1212 	 * trying to set something that we do not support.
1213 	 */
1214 	if (memcmp(&copy_ks.base, &safe_ks.base,
1215 		   sizeof(struct ethtool_link_settings)))
1216 		return -EOPNOTSUPP;
1217 
1218 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1219 		timeout--;
1220 		if (!timeout)
1221 			return -EBUSY;
1222 		usleep_range(1000, 2000);
1223 	}
1224 
1225 	/* Get the current phy config */
1226 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1227 					      NULL);
1228 	if (status) {
1229 		err = -EAGAIN;
1230 		goto done;
1231 	}
1232 
1233 	/* Copy abilities to config in case autoneg is not
1234 	 * set below
1235 	 */
1236 	memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1237 	config.abilities = abilities.abilities;
1238 
1239 	/* Check autoneg */
1240 	if (autoneg == AUTONEG_ENABLE) {
1241 		/* If autoneg was not already enabled */
1242 		if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1243 			/* If autoneg is not supported, return error */
1244 			if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1245 								   supported,
1246 								   Autoneg)) {
1247 				netdev_info(netdev, "Autoneg not supported on this phy\n");
1248 				err = -EINVAL;
1249 				goto done;
1250 			}
1251 			/* Autoneg is allowed to change */
1252 			config.abilities = abilities.abilities |
1253 					   I40E_AQ_PHY_ENABLE_AN;
1254 			autoneg_changed = true;
1255 		}
1256 	} else {
1257 		/* If autoneg is currently enabled */
1258 		if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1259 			/* If autoneg is supported 10GBASE_T is the only PHY
1260 			 * that can disable it, so otherwise return error
1261 			 */
1262 			if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1263 								  supported,
1264 								  Autoneg) &&
1265 			    hw->phy.link_info.phy_type !=
1266 			    I40E_PHY_TYPE_10GBASE_T) {
1267 				netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1268 				err = -EINVAL;
1269 				goto done;
1270 			}
1271 			/* Autoneg is allowed to change */
1272 			config.abilities = abilities.abilities &
1273 					   ~I40E_AQ_PHY_ENABLE_AN;
1274 			autoneg_changed = true;
1275 		}
1276 	}
1277 
1278 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1279 						  100baseT_Full))
1280 		config.link_speed |= I40E_LINK_SPEED_100MB;
1281 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1282 						  1000baseT_Full) ||
1283 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1284 						  1000baseX_Full) ||
1285 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1286 						  1000baseKX_Full))
1287 		config.link_speed |= I40E_LINK_SPEED_1GB;
1288 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1289 						  10000baseT_Full) ||
1290 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1291 						  10000baseKX4_Full) ||
1292 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1293 						  10000baseKR_Full) ||
1294 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1295 						  10000baseCR_Full) ||
1296 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1297 						  10000baseSR_Full) ||
1298 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1299 						  10000baseLR_Full))
1300 		config.link_speed |= I40E_LINK_SPEED_10GB;
1301 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1302 						  2500baseT_Full))
1303 		config.link_speed |= I40E_LINK_SPEED_2_5GB;
1304 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1305 						  5000baseT_Full))
1306 		config.link_speed |= I40E_LINK_SPEED_5GB;
1307 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1308 						  20000baseKR2_Full))
1309 		config.link_speed |= I40E_LINK_SPEED_20GB;
1310 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1311 						  25000baseCR_Full) ||
1312 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1313 						  25000baseKR_Full) ||
1314 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1315 						  25000baseSR_Full))
1316 		config.link_speed |= I40E_LINK_SPEED_25GB;
1317 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1318 						  40000baseKR4_Full) ||
1319 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1320 						  40000baseCR4_Full) ||
1321 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1322 						  40000baseSR4_Full) ||
1323 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1324 						  40000baseLR4_Full))
1325 		config.link_speed |= I40E_LINK_SPEED_40GB;
1326 
1327 	/* If speed didn't get set, set it to what it currently is.
1328 	 * This is needed because if advertise is 0 (as it is when autoneg
1329 	 * is disabled) then speed won't get set.
1330 	 */
1331 	if (!config.link_speed)
1332 		config.link_speed = abilities.link_speed;
1333 	if (autoneg_changed || abilities.link_speed != config.link_speed) {
1334 		/* copy over the rest of the abilities */
1335 		config.phy_type = abilities.phy_type;
1336 		config.phy_type_ext = abilities.phy_type_ext;
1337 		config.eee_capability = abilities.eee_capability;
1338 		config.eeer = abilities.eeer_val;
1339 		config.low_power_ctrl = abilities.d3_lpan;
1340 		config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1341 				    I40E_AQ_PHY_FEC_CONFIG_MASK;
1342 
1343 		/* save the requested speeds */
1344 		hw->phy.link_info.requested_speeds = config.link_speed;
1345 		/* set link and auto negotiation so changes take effect */
1346 		config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1347 		/* If link is up put link down */
1348 		if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1349 			/* Tell the OS link is going down, the link will go
1350 			 * back up when fw says it is ready asynchronously
1351 			 */
1352 			i40e_print_link_message(vsi, false);
1353 			netif_carrier_off(netdev);
1354 			netif_tx_stop_all_queues(netdev);
1355 		}
1356 
1357 		/* make the aq call */
1358 		status = i40e_aq_set_phy_config(hw, &config, NULL);
1359 		if (status) {
1360 			netdev_info(netdev,
1361 				    "Set phy config failed, err %s aq_err %s\n",
1362 				    i40e_stat_str(hw, status),
1363 				    i40e_aq_str(hw, hw->aq.asq_last_status));
1364 			err = -EAGAIN;
1365 			goto done;
1366 		}
1367 
1368 		status = i40e_update_link_info(hw);
1369 		if (status)
1370 			netdev_dbg(netdev,
1371 				   "Updating link info failed with err %s aq_err %s\n",
1372 				   i40e_stat_str(hw, status),
1373 				   i40e_aq_str(hw, hw->aq.asq_last_status));
1374 
1375 	} else {
1376 		netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1377 	}
1378 
1379 done:
1380 	clear_bit(__I40E_CONFIG_BUSY, pf->state);
1381 
1382 	return err;
1383 }
1384 
1385 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1386 {
1387 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1388 	struct i40e_aq_get_phy_abilities_resp abilities;
1389 	struct i40e_pf *pf = np->vsi->back;
1390 	struct i40e_hw *hw = &pf->hw;
1391 	i40e_status status = 0;
1392 	u32 flags = 0;
1393 	int err = 0;
1394 
1395 	flags = READ_ONCE(pf->flags);
1396 	i40e_set_fec_in_flags(fec_cfg, &flags);
1397 
1398 	/* Get the current phy config */
1399 	memset(&abilities, 0, sizeof(abilities));
1400 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1401 					      NULL);
1402 	if (status) {
1403 		err = -EAGAIN;
1404 		goto done;
1405 	}
1406 
1407 	if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1408 		struct i40e_aq_set_phy_config config;
1409 
1410 		memset(&config, 0, sizeof(config));
1411 		config.phy_type = abilities.phy_type;
1412 		config.abilities = abilities.abilities |
1413 				   I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1414 		config.phy_type_ext = abilities.phy_type_ext;
1415 		config.link_speed = abilities.link_speed;
1416 		config.eee_capability = abilities.eee_capability;
1417 		config.eeer = abilities.eeer_val;
1418 		config.low_power_ctrl = abilities.d3_lpan;
1419 		config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1420 		status = i40e_aq_set_phy_config(hw, &config, NULL);
1421 		if (status) {
1422 			netdev_info(netdev,
1423 				    "Set phy config failed, err %s aq_err %s\n",
1424 				    i40e_stat_str(hw, status),
1425 				    i40e_aq_str(hw, hw->aq.asq_last_status));
1426 			err = -EAGAIN;
1427 			goto done;
1428 		}
1429 		pf->flags = flags;
1430 		status = i40e_update_link_info(hw);
1431 		if (status)
1432 			/* debug level message only due to relation to the link
1433 			 * itself rather than to the FEC settings
1434 			 * (e.g. no physical connection etc.)
1435 			 */
1436 			netdev_dbg(netdev,
1437 				   "Updating link info failed with err %s aq_err %s\n",
1438 				   i40e_stat_str(hw, status),
1439 				   i40e_aq_str(hw, hw->aq.asq_last_status));
1440 	}
1441 
1442 done:
1443 	return err;
1444 }
1445 
1446 static int i40e_get_fec_param(struct net_device *netdev,
1447 			      struct ethtool_fecparam *fecparam)
1448 {
1449 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1450 	struct i40e_aq_get_phy_abilities_resp abilities;
1451 	struct i40e_pf *pf = np->vsi->back;
1452 	struct i40e_hw *hw = &pf->hw;
1453 	i40e_status status = 0;
1454 	int err = 0;
1455 	u8 fec_cfg;
1456 
1457 	/* Get the current phy config */
1458 	memset(&abilities, 0, sizeof(abilities));
1459 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1460 					      NULL);
1461 	if (status) {
1462 		err = -EAGAIN;
1463 		goto done;
1464 	}
1465 
1466 	fecparam->fec = 0;
1467 	fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
1468 	if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
1469 		fecparam->fec |= ETHTOOL_FEC_AUTO;
1470 	else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
1471 		 I40E_AQ_SET_FEC_ABILITY_RS))
1472 		fecparam->fec |= ETHTOOL_FEC_RS;
1473 	else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
1474 		 I40E_AQ_SET_FEC_ABILITY_KR))
1475 		fecparam->fec |= ETHTOOL_FEC_BASER;
1476 	if (fec_cfg == 0)
1477 		fecparam->fec |= ETHTOOL_FEC_OFF;
1478 
1479 	if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1480 		fecparam->active_fec = ETHTOOL_FEC_BASER;
1481 	else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1482 		fecparam->active_fec = ETHTOOL_FEC_RS;
1483 	else
1484 		fecparam->active_fec = ETHTOOL_FEC_OFF;
1485 done:
1486 	return err;
1487 }
1488 
1489 static int i40e_set_fec_param(struct net_device *netdev,
1490 			      struct ethtool_fecparam *fecparam)
1491 {
1492 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1493 	struct i40e_pf *pf = np->vsi->back;
1494 	struct i40e_hw *hw = &pf->hw;
1495 	u8 fec_cfg = 0;
1496 
1497 	if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1498 	    hw->device_id != I40E_DEV_ID_25G_B &&
1499 	    hw->device_id != I40E_DEV_ID_KX_X722)
1500 		return -EPERM;
1501 
1502 	if (hw->mac.type == I40E_MAC_X722 &&
1503 	    !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
1504 		netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
1505 		return -EOPNOTSUPP;
1506 	}
1507 
1508 	switch (fecparam->fec) {
1509 	case ETHTOOL_FEC_AUTO:
1510 		fec_cfg = I40E_AQ_SET_FEC_AUTO;
1511 		break;
1512 	case ETHTOOL_FEC_RS:
1513 		fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1514 			     I40E_AQ_SET_FEC_ABILITY_RS);
1515 		break;
1516 	case ETHTOOL_FEC_BASER:
1517 		fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1518 			     I40E_AQ_SET_FEC_ABILITY_KR);
1519 		break;
1520 	case ETHTOOL_FEC_OFF:
1521 	case ETHTOOL_FEC_NONE:
1522 		fec_cfg = 0;
1523 		break;
1524 	default:
1525 		dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1526 			 fecparam->fec);
1527 		return -EINVAL;
1528 	}
1529 
1530 	return i40e_set_fec_cfg(netdev, fec_cfg);
1531 }
1532 
1533 static int i40e_nway_reset(struct net_device *netdev)
1534 {
1535 	/* restart autonegotiation */
1536 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1537 	struct i40e_pf *pf = np->vsi->back;
1538 	struct i40e_hw *hw = &pf->hw;
1539 	bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1540 	i40e_status ret = 0;
1541 
1542 	ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1543 	if (ret) {
1544 		netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1545 			    i40e_stat_str(hw, ret),
1546 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1547 		return -EIO;
1548 	}
1549 
1550 	return 0;
1551 }
1552 
1553 /**
1554  * i40e_get_pauseparam -  Get Flow Control status
1555  * @netdev: netdevice structure
1556  * @pause: buffer to return pause parameters
1557  *
1558  * Return tx/rx-pause status
1559  **/
1560 static void i40e_get_pauseparam(struct net_device *netdev,
1561 				struct ethtool_pauseparam *pause)
1562 {
1563 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1564 	struct i40e_pf *pf = np->vsi->back;
1565 	struct i40e_hw *hw = &pf->hw;
1566 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1567 	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1568 
1569 	pause->autoneg =
1570 		((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1571 		  AUTONEG_ENABLE : AUTONEG_DISABLE);
1572 
1573 	/* PFC enabled so report LFC as off */
1574 	if (dcbx_cfg->pfc.pfcenable) {
1575 		pause->rx_pause = 0;
1576 		pause->tx_pause = 0;
1577 		return;
1578 	}
1579 
1580 	if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1581 		pause->rx_pause = 1;
1582 	} else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1583 		pause->tx_pause = 1;
1584 	} else if (hw->fc.current_mode == I40E_FC_FULL) {
1585 		pause->rx_pause = 1;
1586 		pause->tx_pause = 1;
1587 	}
1588 }
1589 
1590 /**
1591  * i40e_set_pauseparam - Set Flow Control parameter
1592  * @netdev: network interface device structure
1593  * @pause: return tx/rx flow control status
1594  **/
1595 static int i40e_set_pauseparam(struct net_device *netdev,
1596 			       struct ethtool_pauseparam *pause)
1597 {
1598 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1599 	struct i40e_pf *pf = np->vsi->back;
1600 	struct i40e_vsi *vsi = np->vsi;
1601 	struct i40e_hw *hw = &pf->hw;
1602 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1603 	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1604 	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1605 	i40e_status status;
1606 	u8 aq_failures;
1607 	int err = 0;
1608 	u32 is_an;
1609 
1610 	/* Changing the port's flow control is not supported if this isn't the
1611 	 * port's controlling PF
1612 	 */
1613 	if (hw->partition_id != 1) {
1614 		i40e_partition_setting_complaint(pf);
1615 		return -EOPNOTSUPP;
1616 	}
1617 
1618 	if (vsi != pf->vsi[pf->lan_vsi])
1619 		return -EOPNOTSUPP;
1620 
1621 	is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1622 	if (pause->autoneg != is_an) {
1623 		netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1624 		return -EOPNOTSUPP;
1625 	}
1626 
1627 	/* If we have link and don't have autoneg */
1628 	if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1629 		/* Send message that it might not necessarily work*/
1630 		netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1631 	}
1632 
1633 	if (dcbx_cfg->pfc.pfcenable) {
1634 		netdev_info(netdev,
1635 			    "Priority flow control enabled. Cannot set link flow control.\n");
1636 		return -EOPNOTSUPP;
1637 	}
1638 
1639 	if (pause->rx_pause && pause->tx_pause)
1640 		hw->fc.requested_mode = I40E_FC_FULL;
1641 	else if (pause->rx_pause && !pause->tx_pause)
1642 		hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1643 	else if (!pause->rx_pause && pause->tx_pause)
1644 		hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1645 	else if (!pause->rx_pause && !pause->tx_pause)
1646 		hw->fc.requested_mode = I40E_FC_NONE;
1647 	else
1648 		return -EINVAL;
1649 
1650 	/* Tell the OS link is going down, the link will go back up when fw
1651 	 * says it is ready asynchronously
1652 	 */
1653 	i40e_print_link_message(vsi, false);
1654 	netif_carrier_off(netdev);
1655 	netif_tx_stop_all_queues(netdev);
1656 
1657 	/* Set the fc mode and only restart an if link is up*/
1658 	status = i40e_set_fc(hw, &aq_failures, link_up);
1659 
1660 	if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1661 		netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1662 			    i40e_stat_str(hw, status),
1663 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1664 		err = -EAGAIN;
1665 	}
1666 	if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1667 		netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1668 			    i40e_stat_str(hw, status),
1669 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1670 		err = -EAGAIN;
1671 	}
1672 	if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1673 		netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1674 			    i40e_stat_str(hw, status),
1675 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1676 		err = -EAGAIN;
1677 	}
1678 
1679 	if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1680 		/* Give it a little more time to try to come back */
1681 		msleep(75);
1682 		if (!test_bit(__I40E_DOWN, pf->state))
1683 			return i40e_nway_reset(netdev);
1684 	}
1685 
1686 	return err;
1687 }
1688 
1689 static u32 i40e_get_msglevel(struct net_device *netdev)
1690 {
1691 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1692 	struct i40e_pf *pf = np->vsi->back;
1693 	u32 debug_mask = pf->hw.debug_mask;
1694 
1695 	if (debug_mask)
1696 		netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1697 
1698 	return pf->msg_enable;
1699 }
1700 
1701 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1702 {
1703 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1704 	struct i40e_pf *pf = np->vsi->back;
1705 
1706 	if (I40E_DEBUG_USER & data)
1707 		pf->hw.debug_mask = data;
1708 	else
1709 		pf->msg_enable = data;
1710 }
1711 
1712 static int i40e_get_regs_len(struct net_device *netdev)
1713 {
1714 	int reg_count = 0;
1715 	int i;
1716 
1717 	for (i = 0; i40e_reg_list[i].offset != 0; i++)
1718 		reg_count += i40e_reg_list[i].elements;
1719 
1720 	return reg_count * sizeof(u32);
1721 }
1722 
1723 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1724 			  void *p)
1725 {
1726 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1727 	struct i40e_pf *pf = np->vsi->back;
1728 	struct i40e_hw *hw = &pf->hw;
1729 	u32 *reg_buf = p;
1730 	unsigned int i, j, ri;
1731 	u32 reg;
1732 
1733 	/* Tell ethtool which driver-version-specific regs output we have.
1734 	 *
1735 	 * At some point, if we have ethtool doing special formatting of
1736 	 * this data, it will rely on this version number to know how to
1737 	 * interpret things.  Hence, this needs to be updated if/when the
1738 	 * diags register table is changed.
1739 	 */
1740 	regs->version = 1;
1741 
1742 	/* loop through the diags reg table for what to print */
1743 	ri = 0;
1744 	for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1745 		for (j = 0; j < i40e_reg_list[i].elements; j++) {
1746 			reg = i40e_reg_list[i].offset
1747 				+ (j * i40e_reg_list[i].stride);
1748 			reg_buf[ri++] = rd32(hw, reg);
1749 		}
1750 	}
1751 
1752 }
1753 
1754 static int i40e_get_eeprom(struct net_device *netdev,
1755 			   struct ethtool_eeprom *eeprom, u8 *bytes)
1756 {
1757 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1758 	struct i40e_hw *hw = &np->vsi->back->hw;
1759 	struct i40e_pf *pf = np->vsi->back;
1760 	int ret_val = 0, len, offset;
1761 	u8 *eeprom_buff;
1762 	u16 i, sectors;
1763 	bool last;
1764 	u32 magic;
1765 
1766 #define I40E_NVM_SECTOR_SIZE  4096
1767 	if (eeprom->len == 0)
1768 		return -EINVAL;
1769 
1770 	/* check for NVMUpdate access method */
1771 	magic = hw->vendor_id | (hw->device_id << 16);
1772 	if (eeprom->magic && eeprom->magic != magic) {
1773 		struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1774 		int errno = 0;
1775 
1776 		/* make sure it is the right magic for NVMUpdate */
1777 		if ((eeprom->magic >> 16) != hw->device_id)
1778 			errno = -EINVAL;
1779 		else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1780 			 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1781 			errno = -EBUSY;
1782 		else
1783 			ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1784 
1785 		if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1786 			dev_info(&pf->pdev->dev,
1787 				 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1788 				 ret_val, hw->aq.asq_last_status, errno,
1789 				 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1790 				 cmd->offset, cmd->data_size);
1791 
1792 		return errno;
1793 	}
1794 
1795 	/* normal ethtool get_eeprom support */
1796 	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1797 
1798 	eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1799 	if (!eeprom_buff)
1800 		return -ENOMEM;
1801 
1802 	ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1803 	if (ret_val) {
1804 		dev_info(&pf->pdev->dev,
1805 			 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1806 			 ret_val, hw->aq.asq_last_status);
1807 		goto free_buff;
1808 	}
1809 
1810 	sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1811 	sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1812 	len = I40E_NVM_SECTOR_SIZE;
1813 	last = false;
1814 	for (i = 0; i < sectors; i++) {
1815 		if (i == (sectors - 1)) {
1816 			len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1817 			last = true;
1818 		}
1819 		offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1820 		ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1821 				(u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1822 				last, NULL);
1823 		if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1824 			dev_info(&pf->pdev->dev,
1825 				 "read NVM failed, invalid offset 0x%x\n",
1826 				 offset);
1827 			break;
1828 		} else if (ret_val &&
1829 			   hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1830 			dev_info(&pf->pdev->dev,
1831 				 "read NVM failed, access, offset 0x%x\n",
1832 				 offset);
1833 			break;
1834 		} else if (ret_val) {
1835 			dev_info(&pf->pdev->dev,
1836 				 "read NVM failed offset %d err=%d status=0x%x\n",
1837 				 offset, ret_val, hw->aq.asq_last_status);
1838 			break;
1839 		}
1840 	}
1841 
1842 	i40e_release_nvm(hw);
1843 	memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1844 free_buff:
1845 	kfree(eeprom_buff);
1846 	return ret_val;
1847 }
1848 
1849 static int i40e_get_eeprom_len(struct net_device *netdev)
1850 {
1851 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1852 	struct i40e_hw *hw = &np->vsi->back->hw;
1853 	u32 val;
1854 
1855 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1856 	if (hw->mac.type == I40E_MAC_X722) {
1857 		val = X722_EEPROM_SCOPE_LIMIT + 1;
1858 		return val;
1859 	}
1860 	val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1861 		& I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1862 		>> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1863 	/* register returns value in power of 2, 64Kbyte chunks. */
1864 	val = (64 * 1024) * BIT(val);
1865 	return val;
1866 }
1867 
1868 static int i40e_set_eeprom(struct net_device *netdev,
1869 			   struct ethtool_eeprom *eeprom, u8 *bytes)
1870 {
1871 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1872 	struct i40e_hw *hw = &np->vsi->back->hw;
1873 	struct i40e_pf *pf = np->vsi->back;
1874 	struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1875 	int ret_val = 0;
1876 	int errno = 0;
1877 	u32 magic;
1878 
1879 	/* normal ethtool set_eeprom is not supported */
1880 	magic = hw->vendor_id | (hw->device_id << 16);
1881 	if (eeprom->magic == magic)
1882 		errno = -EOPNOTSUPP;
1883 	/* check for NVMUpdate access method */
1884 	else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1885 		errno = -EINVAL;
1886 	else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1887 		 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1888 		errno = -EBUSY;
1889 	else
1890 		ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1891 
1892 	if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1893 		dev_info(&pf->pdev->dev,
1894 			 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1895 			 ret_val, hw->aq.asq_last_status, errno,
1896 			 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1897 			 cmd->offset, cmd->data_size);
1898 
1899 	return errno;
1900 }
1901 
1902 static void i40e_get_drvinfo(struct net_device *netdev,
1903 			     struct ethtool_drvinfo *drvinfo)
1904 {
1905 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1906 	struct i40e_vsi *vsi = np->vsi;
1907 	struct i40e_pf *pf = vsi->back;
1908 
1909 	strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1910 	strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1911 		sizeof(drvinfo->fw_version));
1912 	strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1913 		sizeof(drvinfo->bus_info));
1914 	drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1915 	if (pf->hw.pf_id == 0)
1916 		drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1917 }
1918 
1919 static void i40e_get_ringparam(struct net_device *netdev,
1920 			       struct ethtool_ringparam *ring)
1921 {
1922 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1923 	struct i40e_pf *pf = np->vsi->back;
1924 	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1925 
1926 	ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1927 	ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1928 	ring->rx_mini_max_pending = 0;
1929 	ring->rx_jumbo_max_pending = 0;
1930 	ring->rx_pending = vsi->rx_rings[0]->count;
1931 	ring->tx_pending = vsi->tx_rings[0]->count;
1932 	ring->rx_mini_pending = 0;
1933 	ring->rx_jumbo_pending = 0;
1934 }
1935 
1936 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1937 {
1938 	if (i40e_enabled_xdp_vsi(vsi)) {
1939 		return index < vsi->num_queue_pairs ||
1940 			(index >= vsi->alloc_queue_pairs &&
1941 			 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1942 	}
1943 
1944 	return index < vsi->num_queue_pairs;
1945 }
1946 
1947 static int i40e_set_ringparam(struct net_device *netdev,
1948 			      struct ethtool_ringparam *ring)
1949 {
1950 	struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1951 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1952 	struct i40e_hw *hw = &np->vsi->back->hw;
1953 	struct i40e_vsi *vsi = np->vsi;
1954 	struct i40e_pf *pf = vsi->back;
1955 	u32 new_rx_count, new_tx_count;
1956 	u16 tx_alloc_queue_pairs;
1957 	int timeout = 50;
1958 	int i, err = 0;
1959 
1960 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1961 		return -EINVAL;
1962 
1963 	if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1964 	    ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1965 	    ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1966 	    ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1967 		netdev_info(netdev,
1968 			    "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1969 			    ring->tx_pending, ring->rx_pending,
1970 			    I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1971 		return -EINVAL;
1972 	}
1973 
1974 	new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1975 	new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1976 
1977 	/* if nothing to do return success */
1978 	if ((new_tx_count == vsi->tx_rings[0]->count) &&
1979 	    (new_rx_count == vsi->rx_rings[0]->count))
1980 		return 0;
1981 
1982 	/* If there is a AF_XDP page pool attached to any of Rx rings,
1983 	 * disallow changing the number of descriptors -- regardless
1984 	 * if the netdev is running or not.
1985 	 */
1986 	if (i40e_xsk_any_rx_ring_enabled(vsi))
1987 		return -EBUSY;
1988 
1989 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1990 		timeout--;
1991 		if (!timeout)
1992 			return -EBUSY;
1993 		usleep_range(1000, 2000);
1994 	}
1995 
1996 	if (!netif_running(vsi->netdev)) {
1997 		/* simple case - set for the next time the netdev is started */
1998 		for (i = 0; i < vsi->num_queue_pairs; i++) {
1999 			vsi->tx_rings[i]->count = new_tx_count;
2000 			vsi->rx_rings[i]->count = new_rx_count;
2001 			if (i40e_enabled_xdp_vsi(vsi))
2002 				vsi->xdp_rings[i]->count = new_tx_count;
2003 		}
2004 		vsi->num_tx_desc = new_tx_count;
2005 		vsi->num_rx_desc = new_rx_count;
2006 		goto done;
2007 	}
2008 
2009 	/* We can't just free everything and then setup again,
2010 	 * because the ISRs in MSI-X mode get passed pointers
2011 	 * to the Tx and Rx ring structs.
2012 	 */
2013 
2014 	/* alloc updated Tx and XDP Tx resources */
2015 	tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
2016 			       (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
2017 	if (new_tx_count != vsi->tx_rings[0]->count) {
2018 		netdev_info(netdev,
2019 			    "Changing Tx descriptor count from %d to %d.\n",
2020 			    vsi->tx_rings[0]->count, new_tx_count);
2021 		tx_rings = kcalloc(tx_alloc_queue_pairs,
2022 				   sizeof(struct i40e_ring), GFP_KERNEL);
2023 		if (!tx_rings) {
2024 			err = -ENOMEM;
2025 			goto done;
2026 		}
2027 
2028 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2029 			if (!i40e_active_tx_ring_index(vsi, i))
2030 				continue;
2031 
2032 			tx_rings[i] = *vsi->tx_rings[i];
2033 			tx_rings[i].count = new_tx_count;
2034 			/* the desc and bi pointers will be reallocated in the
2035 			 * setup call
2036 			 */
2037 			tx_rings[i].desc = NULL;
2038 			tx_rings[i].rx_bi = NULL;
2039 			err = i40e_setup_tx_descriptors(&tx_rings[i]);
2040 			if (err) {
2041 				while (i) {
2042 					i--;
2043 					if (!i40e_active_tx_ring_index(vsi, i))
2044 						continue;
2045 					i40e_free_tx_resources(&tx_rings[i]);
2046 				}
2047 				kfree(tx_rings);
2048 				tx_rings = NULL;
2049 
2050 				goto done;
2051 			}
2052 		}
2053 	}
2054 
2055 	/* alloc updated Rx resources */
2056 	if (new_rx_count != vsi->rx_rings[0]->count) {
2057 		netdev_info(netdev,
2058 			    "Changing Rx descriptor count from %d to %d\n",
2059 			    vsi->rx_rings[0]->count, new_rx_count);
2060 		rx_rings = kcalloc(vsi->alloc_queue_pairs,
2061 				   sizeof(struct i40e_ring), GFP_KERNEL);
2062 		if (!rx_rings) {
2063 			err = -ENOMEM;
2064 			goto free_tx;
2065 		}
2066 
2067 		for (i = 0; i < vsi->num_queue_pairs; i++) {
2068 			u16 unused;
2069 
2070 			/* clone ring and setup updated count */
2071 			rx_rings[i] = *vsi->rx_rings[i];
2072 			rx_rings[i].count = new_rx_count;
2073 			/* the desc and bi pointers will be reallocated in the
2074 			 * setup call
2075 			 */
2076 			rx_rings[i].desc = NULL;
2077 			rx_rings[i].rx_bi = NULL;
2078 			/* Clear cloned XDP RX-queue info before setup call */
2079 			memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2080 			/* this is to allow wr32 to have something to write to
2081 			 * during early allocation of Rx buffers
2082 			 */
2083 			rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2084 			err = i40e_setup_rx_descriptors(&rx_rings[i]);
2085 			if (err)
2086 				goto rx_unwind;
2087 			err = i40e_alloc_rx_bi(&rx_rings[i]);
2088 			if (err)
2089 				goto rx_unwind;
2090 
2091 			/* now allocate the Rx buffers to make sure the OS
2092 			 * has enough memory, any failure here means abort
2093 			 */
2094 			unused = I40E_DESC_UNUSED(&rx_rings[i]);
2095 			err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
2096 rx_unwind:
2097 			if (err) {
2098 				do {
2099 					i40e_free_rx_resources(&rx_rings[i]);
2100 				} while (i--);
2101 				kfree(rx_rings);
2102 				rx_rings = NULL;
2103 
2104 				goto free_tx;
2105 			}
2106 		}
2107 	}
2108 
2109 	/* Bring interface down, copy in the new ring info,
2110 	 * then restore the interface
2111 	 */
2112 	i40e_down(vsi);
2113 
2114 	if (tx_rings) {
2115 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2116 			if (i40e_active_tx_ring_index(vsi, i)) {
2117 				i40e_free_tx_resources(vsi->tx_rings[i]);
2118 				*vsi->tx_rings[i] = tx_rings[i];
2119 			}
2120 		}
2121 		kfree(tx_rings);
2122 		tx_rings = NULL;
2123 	}
2124 
2125 	if (rx_rings) {
2126 		for (i = 0; i < vsi->num_queue_pairs; i++) {
2127 			i40e_free_rx_resources(vsi->rx_rings[i]);
2128 			/* get the real tail offset */
2129 			rx_rings[i].tail = vsi->rx_rings[i]->tail;
2130 			/* this is to fake out the allocation routine
2131 			 * into thinking it has to realloc everything
2132 			 * but the recycling logic will let us re-use
2133 			 * the buffers allocated above
2134 			 */
2135 			rx_rings[i].next_to_use = 0;
2136 			rx_rings[i].next_to_clean = 0;
2137 			rx_rings[i].next_to_alloc = 0;
2138 			/* do a struct copy */
2139 			*vsi->rx_rings[i] = rx_rings[i];
2140 		}
2141 		kfree(rx_rings);
2142 		rx_rings = NULL;
2143 	}
2144 
2145 	vsi->num_tx_desc = new_tx_count;
2146 	vsi->num_rx_desc = new_rx_count;
2147 	i40e_up(vsi);
2148 
2149 free_tx:
2150 	/* error cleanup if the Rx allocations failed after getting Tx */
2151 	if (tx_rings) {
2152 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2153 			if (i40e_active_tx_ring_index(vsi, i))
2154 				i40e_free_tx_resources(vsi->tx_rings[i]);
2155 		}
2156 		kfree(tx_rings);
2157 		tx_rings = NULL;
2158 	}
2159 
2160 done:
2161 	clear_bit(__I40E_CONFIG_BUSY, pf->state);
2162 
2163 	return err;
2164 }
2165 
2166 /**
2167  * i40e_get_stats_count - return the stats count for a device
2168  * @netdev: the netdev to return the count for
2169  *
2170  * Returns the total number of statistics for this netdev. Note that even
2171  * though this is a function, it is required that the count for a specific
2172  * netdev must never change. Basing the count on static values such as the
2173  * maximum number of queues or the device type is ok. However, the API for
2174  * obtaining stats is *not* safe against changes based on non-static
2175  * values such as the *current* number of queues, or runtime flags.
2176  *
2177  * If a statistic is not always enabled, return it as part of the count
2178  * anyways, always return its string, and report its value as zero.
2179  **/
2180 static int i40e_get_stats_count(struct net_device *netdev)
2181 {
2182 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2183 	struct i40e_vsi *vsi = np->vsi;
2184 	struct i40e_pf *pf = vsi->back;
2185 	int stats_len;
2186 
2187 	if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2188 		stats_len = I40E_PF_STATS_LEN;
2189 	else
2190 		stats_len = I40E_VSI_STATS_LEN;
2191 
2192 	/* The number of stats reported for a given net_device must remain
2193 	 * constant throughout the life of that device.
2194 	 *
2195 	 * This is because the API for obtaining the size, strings, and stats
2196 	 * is spread out over three separate ethtool ioctls. There is no safe
2197 	 * way to lock the number of stats across these calls, so we must
2198 	 * assume that they will never change.
2199 	 *
2200 	 * Due to this, we report the maximum number of queues, even if not
2201 	 * every queue is currently configured. Since we always allocate
2202 	 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2203 	 * works because the num_tx_queues is set at device creation and never
2204 	 * changes.
2205 	 */
2206 	stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2207 
2208 	return stats_len;
2209 }
2210 
2211 static int i40e_get_sset_count(struct net_device *netdev, int sset)
2212 {
2213 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2214 	struct i40e_vsi *vsi = np->vsi;
2215 	struct i40e_pf *pf = vsi->back;
2216 
2217 	switch (sset) {
2218 	case ETH_SS_TEST:
2219 		return I40E_TEST_LEN;
2220 	case ETH_SS_STATS:
2221 		return i40e_get_stats_count(netdev);
2222 	case ETH_SS_PRIV_FLAGS:
2223 		return I40E_PRIV_FLAGS_STR_LEN +
2224 			(pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2225 	default:
2226 		return -EOPNOTSUPP;
2227 	}
2228 }
2229 
2230 /**
2231  * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
2232  * @tc: the TC statistics in VEB structure (veb->tc_stats)
2233  * @i: the index of traffic class in (veb->tc_stats) structure to copy
2234  *
2235  * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
2236  * one dimensional structure i40e_cp_veb_tc_stats.
2237  * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
2238  * statistics for the given TC.
2239  **/
2240 static struct i40e_cp_veb_tc_stats
2241 i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
2242 {
2243 	struct i40e_cp_veb_tc_stats veb_tc = {
2244 		.tc_rx_packets = tc->tc_rx_packets[i],
2245 		.tc_rx_bytes = tc->tc_rx_bytes[i],
2246 		.tc_tx_packets = tc->tc_tx_packets[i],
2247 		.tc_tx_bytes = tc->tc_tx_bytes[i],
2248 	};
2249 
2250 	return veb_tc;
2251 }
2252 
2253 /**
2254  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2255  * @pf: the PF device structure
2256  * @i: the priority value to copy
2257  *
2258  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2259  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2260  * of the PFC stats for the given priority.
2261  **/
2262 static inline struct i40e_pfc_stats
2263 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2264 {
2265 #define I40E_GET_PFC_STAT(stat, priority) \
2266 	.stat = pf->stats.stat[priority]
2267 
2268 	struct i40e_pfc_stats pfc = {
2269 		I40E_GET_PFC_STAT(priority_xon_rx, i),
2270 		I40E_GET_PFC_STAT(priority_xoff_rx, i),
2271 		I40E_GET_PFC_STAT(priority_xon_tx, i),
2272 		I40E_GET_PFC_STAT(priority_xoff_tx, i),
2273 		I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2274 	};
2275 	return pfc;
2276 }
2277 
2278 /**
2279  * i40e_get_ethtool_stats - copy stat values into supplied buffer
2280  * @netdev: the netdev to collect stats for
2281  * @stats: ethtool stats command structure
2282  * @data: ethtool supplied buffer
2283  *
2284  * Copy the stats values for this netdev into the buffer. Expects data to be
2285  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2286  * statistics must be copied in a static order, and the count must not change
2287  * for a given netdev. See i40e_get_stats_count for more details.
2288  *
2289  * If a statistic is not currently valid (such as a disabled queue), this
2290  * function reports its value as zero.
2291  **/
2292 static void i40e_get_ethtool_stats(struct net_device *netdev,
2293 				   struct ethtool_stats *stats, u64 *data)
2294 {
2295 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2296 	struct i40e_vsi *vsi = np->vsi;
2297 	struct i40e_pf *pf = vsi->back;
2298 	struct i40e_veb *veb = NULL;
2299 	unsigned int i;
2300 	bool veb_stats;
2301 	u64 *p = data;
2302 
2303 	i40e_update_stats(vsi);
2304 
2305 	i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2306 			       i40e_gstrings_net_stats);
2307 
2308 	i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2309 
2310 	rcu_read_lock();
2311 	for (i = 0; i < netdev->num_tx_queues; i++) {
2312 		i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2313 		i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2314 	}
2315 	rcu_read_unlock();
2316 
2317 	if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2318 		goto check_data_pointer;
2319 
2320 	veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2321 		     (pf->lan_veb < I40E_MAX_VEB) &&
2322 		     (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2323 
2324 	if (veb_stats) {
2325 		veb = pf->veb[pf->lan_veb];
2326 		i40e_update_veb_stats(veb);
2327 	}
2328 
2329 	/* If veb stats aren't enabled, pass NULL instead of the veb so that
2330 	 * we initialize stats to zero and update the data pointer
2331 	 * intelligently
2332 	 */
2333 	i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2334 			       i40e_gstrings_veb_stats);
2335 
2336 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2337 		if (veb_stats) {
2338 			struct i40e_cp_veb_tc_stats veb_tc =
2339 				i40e_get_veb_tc_stats(&veb->tc_stats, i);
2340 
2341 			i40e_add_ethtool_stats(&data, &veb_tc,
2342 					       i40e_gstrings_veb_tc_stats);
2343 		} else {
2344 			i40e_add_ethtool_stats(&data, NULL,
2345 					       i40e_gstrings_veb_tc_stats);
2346 		}
2347 
2348 	i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2349 
2350 	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2351 		struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2352 
2353 		i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2354 	}
2355 
2356 check_data_pointer:
2357 	WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2358 		  "ethtool stats count mismatch!");
2359 }
2360 
2361 /**
2362  * i40e_get_stat_strings - copy stat strings into supplied buffer
2363  * @netdev: the netdev to collect strings for
2364  * @data: supplied buffer to copy strings into
2365  *
2366  * Copy the strings related to stats for this netdev. Expects data to be
2367  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2368  * strings must be copied in a static order and the total count must not
2369  * change for a given netdev. See i40e_get_stats_count for more details.
2370  **/
2371 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2372 {
2373 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2374 	struct i40e_vsi *vsi = np->vsi;
2375 	struct i40e_pf *pf = vsi->back;
2376 	unsigned int i;
2377 	u8 *p = data;
2378 
2379 	i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2380 
2381 	i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2382 
2383 	for (i = 0; i < netdev->num_tx_queues; i++) {
2384 		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2385 				      "tx", i);
2386 		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2387 				      "rx", i);
2388 	}
2389 
2390 	if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2391 		goto check_data_pointer;
2392 
2393 	i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2394 
2395 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2396 		i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2397 
2398 	i40e_add_stat_strings(&data, i40e_gstrings_stats);
2399 
2400 	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2401 		i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2402 
2403 check_data_pointer:
2404 	WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2405 		  "stat strings count mismatch!");
2406 }
2407 
2408 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2409 {
2410 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2411 	struct i40e_vsi *vsi = np->vsi;
2412 	struct i40e_pf *pf = vsi->back;
2413 	unsigned int i;
2414 	u8 *p = data;
2415 
2416 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
2417 		ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string);
2418 	if (pf->hw.pf_id != 0)
2419 		return;
2420 	for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
2421 		ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
2422 }
2423 
2424 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2425 			     u8 *data)
2426 {
2427 	switch (stringset) {
2428 	case ETH_SS_TEST:
2429 		memcpy(data, i40e_gstrings_test,
2430 		       I40E_TEST_LEN * ETH_GSTRING_LEN);
2431 		break;
2432 	case ETH_SS_STATS:
2433 		i40e_get_stat_strings(netdev, data);
2434 		break;
2435 	case ETH_SS_PRIV_FLAGS:
2436 		i40e_get_priv_flag_strings(netdev, data);
2437 		break;
2438 	default:
2439 		break;
2440 	}
2441 }
2442 
2443 static int i40e_get_ts_info(struct net_device *dev,
2444 			    struct ethtool_ts_info *info)
2445 {
2446 	struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2447 
2448 	/* only report HW timestamping if PTP is enabled */
2449 	if (!(pf->flags & I40E_FLAG_PTP))
2450 		return ethtool_op_get_ts_info(dev, info);
2451 
2452 	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2453 				SOF_TIMESTAMPING_RX_SOFTWARE |
2454 				SOF_TIMESTAMPING_SOFTWARE |
2455 				SOF_TIMESTAMPING_TX_HARDWARE |
2456 				SOF_TIMESTAMPING_RX_HARDWARE |
2457 				SOF_TIMESTAMPING_RAW_HARDWARE;
2458 
2459 	if (pf->ptp_clock)
2460 		info->phc_index = ptp_clock_index(pf->ptp_clock);
2461 	else
2462 		info->phc_index = -1;
2463 
2464 	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2465 
2466 	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2467 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2468 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2469 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2470 
2471 	if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2472 		info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2473 				    BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2474 				    BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2475 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2476 				    BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2477 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2478 				    BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2479 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2480 
2481 	return 0;
2482 }
2483 
2484 static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2485 {
2486 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2487 	struct i40e_pf *pf = np->vsi->back;
2488 	i40e_status status;
2489 	bool link_up = false;
2490 
2491 	netif_info(pf, hw, netdev, "link test\n");
2492 	status = i40e_get_link_status(&pf->hw, &link_up);
2493 	if (status) {
2494 		netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2495 		*data = 1;
2496 		return *data;
2497 	}
2498 
2499 	if (link_up)
2500 		*data = 0;
2501 	else
2502 		*data = 1;
2503 
2504 	return *data;
2505 }
2506 
2507 static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2508 {
2509 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2510 	struct i40e_pf *pf = np->vsi->back;
2511 
2512 	netif_info(pf, hw, netdev, "register test\n");
2513 	*data = i40e_diag_reg_test(&pf->hw);
2514 
2515 	return *data;
2516 }
2517 
2518 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2519 {
2520 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2521 	struct i40e_pf *pf = np->vsi->back;
2522 
2523 	netif_info(pf, hw, netdev, "eeprom test\n");
2524 	*data = i40e_diag_eeprom_test(&pf->hw);
2525 
2526 	/* forcebly clear the NVM Update state machine */
2527 	pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2528 
2529 	return *data;
2530 }
2531 
2532 static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2533 {
2534 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2535 	struct i40e_pf *pf = np->vsi->back;
2536 	u16 swc_old = pf->sw_int_count;
2537 
2538 	netif_info(pf, hw, netdev, "interrupt test\n");
2539 	wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2540 	     (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2541 	      I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2542 	      I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2543 	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2544 	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2545 	usleep_range(1000, 2000);
2546 	*data = (swc_old == pf->sw_int_count);
2547 
2548 	return *data;
2549 }
2550 
2551 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2552 {
2553 	struct i40e_vf *vfs = pf->vf;
2554 	int i;
2555 
2556 	for (i = 0; i < pf->num_alloc_vfs; i++)
2557 		if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2558 			return true;
2559 	return false;
2560 }
2561 
2562 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2563 {
2564 	return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2565 }
2566 
2567 static void i40e_diag_test(struct net_device *netdev,
2568 			   struct ethtool_test *eth_test, u64 *data)
2569 {
2570 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2571 	bool if_running = netif_running(netdev);
2572 	struct i40e_pf *pf = np->vsi->back;
2573 
2574 	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2575 		/* Offline tests */
2576 		netif_info(pf, drv, netdev, "offline testing starting\n");
2577 
2578 		set_bit(__I40E_TESTING, pf->state);
2579 
2580 		if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2581 			dev_warn(&pf->pdev->dev,
2582 				 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2583 			data[I40E_ETH_TEST_REG]		= 1;
2584 			data[I40E_ETH_TEST_EEPROM]	= 1;
2585 			data[I40E_ETH_TEST_INTR]	= 1;
2586 			data[I40E_ETH_TEST_LINK]	= 1;
2587 			eth_test->flags |= ETH_TEST_FL_FAILED;
2588 			clear_bit(__I40E_TESTING, pf->state);
2589 			goto skip_ol_tests;
2590 		}
2591 
2592 		/* If the device is online then take it offline */
2593 		if (if_running)
2594 			/* indicate we're in test mode */
2595 			i40e_close(netdev);
2596 		else
2597 			/* This reset does not affect link - if it is
2598 			 * changed to a type of reset that does affect
2599 			 * link then the following link test would have
2600 			 * to be moved to before the reset
2601 			 */
2602 			i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2603 
2604 		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2605 			eth_test->flags |= ETH_TEST_FL_FAILED;
2606 
2607 		if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2608 			eth_test->flags |= ETH_TEST_FL_FAILED;
2609 
2610 		if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2611 			eth_test->flags |= ETH_TEST_FL_FAILED;
2612 
2613 		/* run reg test last, a reset is required after it */
2614 		if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2615 			eth_test->flags |= ETH_TEST_FL_FAILED;
2616 
2617 		clear_bit(__I40E_TESTING, pf->state);
2618 		i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2619 
2620 		if (if_running)
2621 			i40e_open(netdev);
2622 	} else {
2623 		/* Online tests */
2624 		netif_info(pf, drv, netdev, "online testing starting\n");
2625 
2626 		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2627 			eth_test->flags |= ETH_TEST_FL_FAILED;
2628 
2629 		/* Offline only tests, not run in online; pass by default */
2630 		data[I40E_ETH_TEST_REG] = 0;
2631 		data[I40E_ETH_TEST_EEPROM] = 0;
2632 		data[I40E_ETH_TEST_INTR] = 0;
2633 	}
2634 
2635 skip_ol_tests:
2636 
2637 	netif_info(pf, drv, netdev, "testing finished\n");
2638 }
2639 
2640 static void i40e_get_wol(struct net_device *netdev,
2641 			 struct ethtool_wolinfo *wol)
2642 {
2643 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2644 	struct i40e_pf *pf = np->vsi->back;
2645 	struct i40e_hw *hw = &pf->hw;
2646 	u16 wol_nvm_bits;
2647 
2648 	/* NVM bit on means WoL disabled for the port */
2649 	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2650 	if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2651 		wol->supported = 0;
2652 		wol->wolopts = 0;
2653 	} else {
2654 		wol->supported = WAKE_MAGIC;
2655 		wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2656 	}
2657 }
2658 
2659 /**
2660  * i40e_set_wol - set the WakeOnLAN configuration
2661  * @netdev: the netdev in question
2662  * @wol: the ethtool WoL setting data
2663  **/
2664 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2665 {
2666 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2667 	struct i40e_pf *pf = np->vsi->back;
2668 	struct i40e_vsi *vsi = np->vsi;
2669 	struct i40e_hw *hw = &pf->hw;
2670 	u16 wol_nvm_bits;
2671 
2672 	/* WoL not supported if this isn't the controlling PF on the port */
2673 	if (hw->partition_id != 1) {
2674 		i40e_partition_setting_complaint(pf);
2675 		return -EOPNOTSUPP;
2676 	}
2677 
2678 	if (vsi != pf->vsi[pf->lan_vsi])
2679 		return -EOPNOTSUPP;
2680 
2681 	/* NVM bit on means WoL disabled for the port */
2682 	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2683 	if (BIT(hw->port) & wol_nvm_bits)
2684 		return -EOPNOTSUPP;
2685 
2686 	/* only magic packet is supported */
2687 	if (wol->wolopts & ~WAKE_MAGIC)
2688 		return -EOPNOTSUPP;
2689 
2690 	/* is this a new value? */
2691 	if (pf->wol_en != !!wol->wolopts) {
2692 		pf->wol_en = !!wol->wolopts;
2693 		device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2694 	}
2695 
2696 	return 0;
2697 }
2698 
2699 static int i40e_set_phys_id(struct net_device *netdev,
2700 			    enum ethtool_phys_id_state state)
2701 {
2702 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2703 	i40e_status ret = 0;
2704 	struct i40e_pf *pf = np->vsi->back;
2705 	struct i40e_hw *hw = &pf->hw;
2706 	int blink_freq = 2;
2707 	u16 temp_status;
2708 
2709 	switch (state) {
2710 	case ETHTOOL_ID_ACTIVE:
2711 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2712 			pf->led_status = i40e_led_get(hw);
2713 		} else {
2714 			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2715 				i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2716 						      NULL);
2717 			ret = i40e_led_get_phy(hw, &temp_status,
2718 					       &pf->phy_led_val);
2719 			pf->led_status = temp_status;
2720 		}
2721 		return blink_freq;
2722 	case ETHTOOL_ID_ON:
2723 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2724 			i40e_led_set(hw, 0xf, false);
2725 		else
2726 			ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2727 		break;
2728 	case ETHTOOL_ID_OFF:
2729 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2730 			i40e_led_set(hw, 0x0, false);
2731 		else
2732 			ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2733 		break;
2734 	case ETHTOOL_ID_INACTIVE:
2735 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2736 			i40e_led_set(hw, pf->led_status, false);
2737 		} else {
2738 			ret = i40e_led_set_phy(hw, false, pf->led_status,
2739 					       (pf->phy_led_val |
2740 					       I40E_PHY_LED_MODE_ORIG));
2741 			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2742 				i40e_aq_set_phy_debug(hw, 0, NULL);
2743 		}
2744 		break;
2745 	default:
2746 		break;
2747 	}
2748 	if (ret)
2749 		return -ENOENT;
2750 	else
2751 		return 0;
2752 }
2753 
2754 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2755  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2756  * 125us (8000 interrupts per second) == ITR(62)
2757  */
2758 
2759 /**
2760  * __i40e_get_coalesce - get per-queue coalesce settings
2761  * @netdev: the netdev to check
2762  * @ec: ethtool coalesce data structure
2763  * @queue: which queue to pick
2764  *
2765  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2766  * are per queue. If queue is <0 then we default to queue 0 as the
2767  * representative value.
2768  **/
2769 static int __i40e_get_coalesce(struct net_device *netdev,
2770 			       struct ethtool_coalesce *ec,
2771 			       int queue)
2772 {
2773 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2774 	struct i40e_ring *rx_ring, *tx_ring;
2775 	struct i40e_vsi *vsi = np->vsi;
2776 
2777 	ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2778 	ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2779 
2780 	/* rx and tx usecs has per queue value. If user doesn't specify the
2781 	 * queue, return queue 0's value to represent.
2782 	 */
2783 	if (queue < 0)
2784 		queue = 0;
2785 	else if (queue >= vsi->num_queue_pairs)
2786 		return -EINVAL;
2787 
2788 	rx_ring = vsi->rx_rings[queue];
2789 	tx_ring = vsi->tx_rings[queue];
2790 
2791 	if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2792 		ec->use_adaptive_rx_coalesce = 1;
2793 
2794 	if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2795 		ec->use_adaptive_tx_coalesce = 1;
2796 
2797 	ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2798 	ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2799 
2800 	/* we use the _usecs_high to store/set the interrupt rate limit
2801 	 * that the hardware supports, that almost but not quite
2802 	 * fits the original intent of the ethtool variable,
2803 	 * the rx_coalesce_usecs_high limits total interrupts
2804 	 * per second from both tx/rx sources.
2805 	 */
2806 	ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2807 	ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2808 
2809 	return 0;
2810 }
2811 
2812 /**
2813  * i40e_get_coalesce - get a netdev's coalesce settings
2814  * @netdev: the netdev to check
2815  * @ec: ethtool coalesce data structure
2816  *
2817  * Gets the coalesce settings for a particular netdev. Note that if user has
2818  * modified per-queue settings, this only guarantees to represent queue 0. See
2819  * __i40e_get_coalesce for more details.
2820  **/
2821 static int i40e_get_coalesce(struct net_device *netdev,
2822 			     struct ethtool_coalesce *ec)
2823 {
2824 	return __i40e_get_coalesce(netdev, ec, -1);
2825 }
2826 
2827 /**
2828  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2829  * @netdev: netdev structure
2830  * @ec: ethtool's coalesce settings
2831  * @queue: the particular queue to read
2832  *
2833  * Will read a specific queue's coalesce settings
2834  **/
2835 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2836 				       struct ethtool_coalesce *ec)
2837 {
2838 	return __i40e_get_coalesce(netdev, ec, queue);
2839 }
2840 
2841 /**
2842  * i40e_set_itr_per_queue - set ITR values for specific queue
2843  * @vsi: the VSI to set values for
2844  * @ec: coalesce settings from ethtool
2845  * @queue: the queue to modify
2846  *
2847  * Change the ITR settings for a specific queue.
2848  **/
2849 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2850 				   struct ethtool_coalesce *ec,
2851 				   int queue)
2852 {
2853 	struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2854 	struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2855 	struct i40e_pf *pf = vsi->back;
2856 	struct i40e_hw *hw = &pf->hw;
2857 	struct i40e_q_vector *q_vector;
2858 	u16 intrl;
2859 
2860 	intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2861 
2862 	rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2863 	tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2864 
2865 	if (ec->use_adaptive_rx_coalesce)
2866 		rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2867 	else
2868 		rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2869 
2870 	if (ec->use_adaptive_tx_coalesce)
2871 		tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2872 	else
2873 		tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2874 
2875 	q_vector = rx_ring->q_vector;
2876 	q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2877 
2878 	q_vector = tx_ring->q_vector;
2879 	q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2880 
2881 	/* The interrupt handler itself will take care of programming
2882 	 * the Tx and Rx ITR values based on the values we have entered
2883 	 * into the q_vector, no need to write the values now.
2884 	 */
2885 
2886 	wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2887 	i40e_flush(hw);
2888 }
2889 
2890 /**
2891  * __i40e_set_coalesce - set coalesce settings for particular queue
2892  * @netdev: the netdev to change
2893  * @ec: ethtool coalesce settings
2894  * @queue: the queue to change
2895  *
2896  * Sets the coalesce settings for a particular queue.
2897  **/
2898 static int __i40e_set_coalesce(struct net_device *netdev,
2899 			       struct ethtool_coalesce *ec,
2900 			       int queue)
2901 {
2902 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2903 	u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2904 	struct i40e_vsi *vsi = np->vsi;
2905 	struct i40e_pf *pf = vsi->back;
2906 	int i;
2907 
2908 	if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2909 		vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2910 
2911 	if (queue < 0) {
2912 		cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2913 		cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2914 	} else if (queue < vsi->num_queue_pairs) {
2915 		cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2916 		cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2917 	} else {
2918 		netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2919 			   vsi->num_queue_pairs - 1);
2920 		return -EINVAL;
2921 	}
2922 
2923 	cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2924 	cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2925 
2926 	/* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2927 	if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2928 		netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2929 		return -EINVAL;
2930 	}
2931 
2932 	if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2933 		netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2934 			   INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2935 		return -EINVAL;
2936 	}
2937 
2938 	if (ec->rx_coalesce_usecs != cur_rx_itr &&
2939 	    ec->use_adaptive_rx_coalesce) {
2940 		netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2941 		return -EINVAL;
2942 	}
2943 
2944 	if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2945 		netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2946 		return -EINVAL;
2947 	}
2948 
2949 	if (ec->tx_coalesce_usecs != cur_tx_itr &&
2950 	    ec->use_adaptive_tx_coalesce) {
2951 		netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2952 		return -EINVAL;
2953 	}
2954 
2955 	if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2956 		netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2957 		return -EINVAL;
2958 	}
2959 
2960 	if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2961 		ec->rx_coalesce_usecs = I40E_MIN_ITR;
2962 
2963 	if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2964 		ec->tx_coalesce_usecs = I40E_MIN_ITR;
2965 
2966 	intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2967 	vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2968 	if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2969 		netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2970 			   vsi->int_rate_limit);
2971 	}
2972 
2973 	/* rx and tx usecs has per queue value. If user doesn't specify the
2974 	 * queue, apply to all queues.
2975 	 */
2976 	if (queue < 0) {
2977 		for (i = 0; i < vsi->num_queue_pairs; i++)
2978 			i40e_set_itr_per_queue(vsi, ec, i);
2979 	} else {
2980 		i40e_set_itr_per_queue(vsi, ec, queue);
2981 	}
2982 
2983 	return 0;
2984 }
2985 
2986 /**
2987  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
2988  * @netdev: the netdev to change
2989  * @ec: ethtool coalesce settings
2990  *
2991  * This will set each queue to the same coalesce settings.
2992  **/
2993 static int i40e_set_coalesce(struct net_device *netdev,
2994 			     struct ethtool_coalesce *ec)
2995 {
2996 	return __i40e_set_coalesce(netdev, ec, -1);
2997 }
2998 
2999 /**
3000  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
3001  * @netdev: the netdev to change
3002  * @ec: ethtool's coalesce settings
3003  * @queue: the queue to change
3004  *
3005  * Sets the specified queue's coalesce settings.
3006  **/
3007 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
3008 				       struct ethtool_coalesce *ec)
3009 {
3010 	return __i40e_set_coalesce(netdev, ec, queue);
3011 }
3012 
3013 /**
3014  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
3015  * @pf: pointer to the physical function struct
3016  * @cmd: ethtool rxnfc command
3017  *
3018  * Returns Success if the flow is supported, else Invalid Input.
3019  **/
3020 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
3021 {
3022 	struct i40e_hw *hw = &pf->hw;
3023 	u8 flow_pctype = 0;
3024 	u64 i_set = 0;
3025 
3026 	cmd->data = 0;
3027 
3028 	switch (cmd->flow_type) {
3029 	case TCP_V4_FLOW:
3030 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3031 		break;
3032 	case UDP_V4_FLOW:
3033 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3034 		break;
3035 	case TCP_V6_FLOW:
3036 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3037 		break;
3038 	case UDP_V6_FLOW:
3039 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3040 		break;
3041 	case SCTP_V4_FLOW:
3042 	case AH_ESP_V4_FLOW:
3043 	case AH_V4_FLOW:
3044 	case ESP_V4_FLOW:
3045 	case IPV4_FLOW:
3046 	case SCTP_V6_FLOW:
3047 	case AH_ESP_V6_FLOW:
3048 	case AH_V6_FLOW:
3049 	case ESP_V6_FLOW:
3050 	case IPV6_FLOW:
3051 		/* Default is src/dest for IP, no matter the L4 hashing */
3052 		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
3053 		break;
3054 	default:
3055 		return -EINVAL;
3056 	}
3057 
3058 	/* Read flow based hash input set register */
3059 	if (flow_pctype) {
3060 		i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3061 					      flow_pctype)) |
3062 			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3063 					       flow_pctype)) << 32);
3064 	}
3065 
3066 	/* Process bits of hash input set */
3067 	if (i_set) {
3068 		if (i_set & I40E_L4_SRC_MASK)
3069 			cmd->data |= RXH_L4_B_0_1;
3070 		if (i_set & I40E_L4_DST_MASK)
3071 			cmd->data |= RXH_L4_B_2_3;
3072 
3073 		if (cmd->flow_type == TCP_V4_FLOW ||
3074 		    cmd->flow_type == UDP_V4_FLOW) {
3075 			if (i_set & I40E_L3_SRC_MASK)
3076 				cmd->data |= RXH_IP_SRC;
3077 			if (i_set & I40E_L3_DST_MASK)
3078 				cmd->data |= RXH_IP_DST;
3079 		} else if (cmd->flow_type == TCP_V6_FLOW ||
3080 			  cmd->flow_type == UDP_V6_FLOW) {
3081 			if (i_set & I40E_L3_V6_SRC_MASK)
3082 				cmd->data |= RXH_IP_SRC;
3083 			if (i_set & I40E_L3_V6_DST_MASK)
3084 				cmd->data |= RXH_IP_DST;
3085 		}
3086 	}
3087 
3088 	return 0;
3089 }
3090 
3091 /**
3092  * i40e_check_mask - Check whether a mask field is set
3093  * @mask: the full mask value
3094  * @field: mask of the field to check
3095  *
3096  * If the given mask is fully set, return positive value. If the mask for the
3097  * field is fully unset, return zero. Otherwise return a negative error code.
3098  **/
3099 static int i40e_check_mask(u64 mask, u64 field)
3100 {
3101 	u64 value = mask & field;
3102 
3103 	if (value == field)
3104 		return 1;
3105 	else if (!value)
3106 		return 0;
3107 	else
3108 		return -1;
3109 }
3110 
3111 /**
3112  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3113  * @fsp: pointer to rx flow specification
3114  * @data: pointer to userdef data structure for storage
3115  *
3116  * Read the user-defined data and deconstruct the value into a structure. No
3117  * other code should read the user-defined data, so as to ensure that every
3118  * place consistently reads the value correctly.
3119  *
3120  * The user-defined field is a 64bit Big Endian format value, which we
3121  * deconstruct by reading bits or bit fields from it. Single bit flags shall
3122  * be defined starting from the highest bits, while small bit field values
3123  * shall be defined starting from the lowest bits.
3124  *
3125  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3126  * and the filter should be rejected. The data structure will always be
3127  * modified even if FLOW_EXT is not set.
3128  *
3129  **/
3130 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3131 					struct i40e_rx_flow_userdef *data)
3132 {
3133 	u64 value, mask;
3134 	int valid;
3135 
3136 	/* Zero memory first so it's always consistent. */
3137 	memset(data, 0, sizeof(*data));
3138 
3139 	if (!(fsp->flow_type & FLOW_EXT))
3140 		return 0;
3141 
3142 	value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3143 	mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3144 
3145 #define I40E_USERDEF_FLEX_WORD		GENMASK_ULL(15, 0)
3146 #define I40E_USERDEF_FLEX_OFFSET	GENMASK_ULL(31, 16)
3147 #define I40E_USERDEF_FLEX_FILTER	GENMASK_ULL(31, 0)
3148 
3149 	valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3150 	if (valid < 0) {
3151 		return -EINVAL;
3152 	} else if (valid) {
3153 		data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3154 		data->flex_offset =
3155 			(value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3156 		data->flex_filter = true;
3157 	}
3158 
3159 	return 0;
3160 }
3161 
3162 /**
3163  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3164  * @fsp: pointer to rx_flow specification
3165  * @data: pointer to return userdef data
3166  *
3167  * Reads the userdef data structure and properly fills in the user defined
3168  * fields of the rx_flow_spec.
3169  **/
3170 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3171 					struct i40e_rx_flow_userdef *data)
3172 {
3173 	u64 value = 0, mask = 0;
3174 
3175 	if (data->flex_filter) {
3176 		value |= data->flex_word;
3177 		value |= (u64)data->flex_offset << 16;
3178 		mask |= I40E_USERDEF_FLEX_FILTER;
3179 	}
3180 
3181 	if (value || mask)
3182 		fsp->flow_type |= FLOW_EXT;
3183 
3184 	*((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3185 	*((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3186 }
3187 
3188 /**
3189  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3190  * @pf: Pointer to the physical function struct
3191  * @cmd: The command to get or set Rx flow classification rules
3192  * @rule_locs: Array of used rule locations
3193  *
3194  * This function populates both the total and actual rule count of
3195  * the ethtool flow classification command
3196  *
3197  * Returns 0 on success or -EMSGSIZE if entry not found
3198  **/
3199 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3200 				     struct ethtool_rxnfc *cmd,
3201 				     u32 *rule_locs)
3202 {
3203 	struct i40e_fdir_filter *rule;
3204 	struct hlist_node *node2;
3205 	int cnt = 0;
3206 
3207 	/* report total rule count */
3208 	cmd->data = i40e_get_fd_cnt_all(pf);
3209 
3210 	hlist_for_each_entry_safe(rule, node2,
3211 				  &pf->fdir_filter_list, fdir_node) {
3212 		if (cnt == cmd->rule_cnt)
3213 			return -EMSGSIZE;
3214 
3215 		rule_locs[cnt] = rule->fd_id;
3216 		cnt++;
3217 	}
3218 
3219 	cmd->rule_cnt = cnt;
3220 
3221 	return 0;
3222 }
3223 
3224 /**
3225  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3226  * @pf: Pointer to the physical function struct
3227  * @cmd: The command to get or set Rx flow classification rules
3228  *
3229  * This function looks up a filter based on the Rx flow classification
3230  * command and fills the flow spec info for it if found
3231  *
3232  * Returns 0 on success or -EINVAL if filter not found
3233  **/
3234 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3235 				       struct ethtool_rxnfc *cmd)
3236 {
3237 	struct ethtool_rx_flow_spec *fsp =
3238 			(struct ethtool_rx_flow_spec *)&cmd->fs;
3239 	struct i40e_rx_flow_userdef userdef = {0};
3240 	struct i40e_fdir_filter *rule = NULL;
3241 	struct hlist_node *node2;
3242 	u64 input_set;
3243 	u16 index;
3244 
3245 	hlist_for_each_entry_safe(rule, node2,
3246 				  &pf->fdir_filter_list, fdir_node) {
3247 		if (fsp->location <= rule->fd_id)
3248 			break;
3249 	}
3250 
3251 	if (!rule || fsp->location != rule->fd_id)
3252 		return -EINVAL;
3253 
3254 	fsp->flow_type = rule->flow_type;
3255 	if (fsp->flow_type == IP_USER_FLOW) {
3256 		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3257 		fsp->h_u.usr_ip4_spec.proto = 0;
3258 		fsp->m_u.usr_ip4_spec.proto = 0;
3259 	}
3260 
3261 	if (fsp->flow_type == IPV6_USER_FLOW ||
3262 	    fsp->flow_type == UDP_V6_FLOW ||
3263 	    fsp->flow_type == TCP_V6_FLOW ||
3264 	    fsp->flow_type == SCTP_V6_FLOW) {
3265 		/* Reverse the src and dest notion, since the HW views them
3266 		 * from Tx perspective where as the user expects it from
3267 		 * Rx filter view.
3268 		 */
3269 		fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
3270 		fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
3271 		memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
3272 		       sizeof(__be32) * 4);
3273 		memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
3274 		       sizeof(__be32) * 4);
3275 	} else {
3276 		/* Reverse the src and dest notion, since the HW views them
3277 		 * from Tx perspective where as the user expects it from
3278 		 * Rx filter view.
3279 		 */
3280 		fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3281 		fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3282 		fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3283 		fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3284 	}
3285 
3286 	switch (rule->flow_type) {
3287 	case SCTP_V4_FLOW:
3288 		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3289 		break;
3290 	case TCP_V4_FLOW:
3291 		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3292 		break;
3293 	case UDP_V4_FLOW:
3294 		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3295 		break;
3296 	case SCTP_V6_FLOW:
3297 		index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
3298 		break;
3299 	case TCP_V6_FLOW:
3300 		index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3301 		break;
3302 	case UDP_V6_FLOW:
3303 		index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3304 		break;
3305 	case IP_USER_FLOW:
3306 		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3307 		break;
3308 	case IPV6_USER_FLOW:
3309 		index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
3310 		break;
3311 	default:
3312 		/* If we have stored a filter with a flow type not listed here
3313 		 * it is almost certainly a driver bug. WARN(), and then
3314 		 * assign the input_set as if all fields are enabled to avoid
3315 		 * reading unassigned memory.
3316 		 */
3317 		WARN(1, "Missing input set index for flow_type %d\n",
3318 		     rule->flow_type);
3319 		input_set = 0xFFFFFFFFFFFFFFFFULL;
3320 		goto no_input_set;
3321 	}
3322 
3323 	input_set = i40e_read_fd_input_set(pf, index);
3324 
3325 no_input_set:
3326 	if (input_set & I40E_L3_V6_SRC_MASK) {
3327 		fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
3328 		fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
3329 		fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
3330 		fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
3331 	}
3332 
3333 	if (input_set & I40E_L3_V6_DST_MASK) {
3334 		fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
3335 		fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
3336 		fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
3337 		fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
3338 	}
3339 
3340 	if (input_set & I40E_L3_SRC_MASK)
3341 		fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3342 
3343 	if (input_set & I40E_L3_DST_MASK)
3344 		fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3345 
3346 	if (input_set & I40E_L4_SRC_MASK)
3347 		fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3348 
3349 	if (input_set & I40E_L4_DST_MASK)
3350 		fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3351 
3352 	if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3353 		fsp->ring_cookie = RX_CLS_FLOW_DISC;
3354 	else
3355 		fsp->ring_cookie = rule->q_index;
3356 
3357 	if (rule->vlan_tag) {
3358 		fsp->h_ext.vlan_etype = rule->vlan_etype;
3359 		fsp->m_ext.vlan_etype = htons(0xFFFF);
3360 		fsp->h_ext.vlan_tci = rule->vlan_tag;
3361 		fsp->m_ext.vlan_tci = htons(0xFFFF);
3362 		fsp->flow_type |= FLOW_EXT;
3363 	}
3364 
3365 	if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3366 		struct i40e_vsi *vsi;
3367 
3368 		vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3369 		if (vsi && vsi->type == I40E_VSI_SRIOV) {
3370 			/* VFs are zero-indexed by the driver, but ethtool
3371 			 * expects them to be one-indexed, so add one here
3372 			 */
3373 			u64 ring_vf = vsi->vf_id + 1;
3374 
3375 			ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3376 			fsp->ring_cookie |= ring_vf;
3377 		}
3378 	}
3379 
3380 	if (rule->flex_filter) {
3381 		userdef.flex_filter = true;
3382 		userdef.flex_word = be16_to_cpu(rule->flex_word);
3383 		userdef.flex_offset = rule->flex_offset;
3384 	}
3385 
3386 	i40e_fill_rx_flow_user_data(fsp, &userdef);
3387 
3388 	return 0;
3389 }
3390 
3391 /**
3392  * i40e_get_rxnfc - command to get RX flow classification rules
3393  * @netdev: network interface device structure
3394  * @cmd: ethtool rxnfc command
3395  * @rule_locs: pointer to store rule data
3396  *
3397  * Returns Success if the command is supported.
3398  **/
3399 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3400 			  u32 *rule_locs)
3401 {
3402 	struct i40e_netdev_priv *np = netdev_priv(netdev);
3403 	struct i40e_vsi *vsi = np->vsi;
3404 	struct i40e_pf *pf = vsi->back;
3405 	int ret = -EOPNOTSUPP;
3406 
3407 	switch (cmd->cmd) {
3408 	case ETHTOOL_GRXRINGS:
3409 		cmd->data = vsi->rss_size;
3410 		ret = 0;
3411 		break;
3412 	case ETHTOOL_GRXFH:
3413 		ret = i40e_get_rss_hash_opts(pf, cmd);
3414 		break;
3415 	case ETHTOOL_GRXCLSRLCNT:
3416 		cmd->rule_cnt = pf->fdir_pf_active_filters;
3417 		/* report total rule count */
3418 		cmd->data = i40e_get_fd_cnt_all(pf);
3419 		ret = 0;
3420 		break;
3421 	case ETHTOOL_GRXCLSRULE:
3422 		ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3423 		break;
3424 	case ETHTOOL_GRXCLSRLALL:
3425 		ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3426 		break;
3427 	default:
3428 		break;
3429 	}
3430 
3431 	return ret;
3432 }
3433 
3434 /**
3435  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3436  * @nfc: pointer to user request
3437  * @i_setc: bits currently set
3438  *
3439  * Returns value of bits to be set per user request
3440  **/
3441 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3442 {
3443 	u64 i_set = i_setc;
3444 	u64 src_l3 = 0, dst_l3 = 0;
3445 
3446 	if (nfc->data & RXH_L4_B_0_1)
3447 		i_set |= I40E_L4_SRC_MASK;
3448 	else
3449 		i_set &= ~I40E_L4_SRC_MASK;
3450 	if (nfc->data & RXH_L4_B_2_3)
3451 		i_set |= I40E_L4_DST_MASK;
3452 	else
3453 		i_set &= ~I40E_L4_DST_MASK;
3454 
3455 	if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3456 		src_l3 = I40E_L3_V6_SRC_MASK;
3457 		dst_l3 = I40E_L3_V6_DST_MASK;
3458 	} else if (nfc->flow_type == TCP_V4_FLOW ||
3459 		  nfc->flow_type == UDP_V4_FLOW) {
3460 		src_l3 = I40E_L3_SRC_MASK;
3461 		dst_l3 = I40E_L3_DST_MASK;
3462 	} else {
3463 		/* Any other flow type are not supported here */
3464 		return i_set;
3465 	}
3466 
3467 	if (nfc->data & RXH_IP_SRC)
3468 		i_set |= src_l3;
3469 	else
3470 		i_set &= ~src_l3;
3471 	if (nfc->data & RXH_IP_DST)
3472 		i_set |= dst_l3;
3473 	else
3474 		i_set &= ~dst_l3;
3475 
3476 	return i_set;
3477 }
3478 
3479 /**
3480  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3481  * @pf: pointer to the physical function struct
3482  * @nfc: ethtool rxnfc command
3483  *
3484  * Returns Success if the flow input set is supported.
3485  **/
3486 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3487 {
3488 	struct i40e_hw *hw = &pf->hw;
3489 	u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3490 		   ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3491 	u8 flow_pctype = 0;
3492 	u64 i_set, i_setc;
3493 
3494 	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3495 		dev_err(&pf->pdev->dev,
3496 			"Change of RSS hash input set is not supported when MFP mode is enabled\n");
3497 		return -EOPNOTSUPP;
3498 	}
3499 
3500 	/* RSS does not support anything other than hashing
3501 	 * to queues on src and dst IPs and ports
3502 	 */
3503 	if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3504 			  RXH_L4_B_0_1 | RXH_L4_B_2_3))
3505 		return -EINVAL;
3506 
3507 	switch (nfc->flow_type) {
3508 	case TCP_V4_FLOW:
3509 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3510 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3511 			hena |=
3512 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3513 		break;
3514 	case TCP_V6_FLOW:
3515 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3516 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3517 			hena |=
3518 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3519 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3520 			hena |=
3521 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3522 		break;
3523 	case UDP_V4_FLOW:
3524 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3525 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3526 			hena |=
3527 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3528 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3529 
3530 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3531 		break;
3532 	case UDP_V6_FLOW:
3533 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3534 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3535 			hena |=
3536 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3537 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3538 
3539 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3540 		break;
3541 	case AH_ESP_V4_FLOW:
3542 	case AH_V4_FLOW:
3543 	case ESP_V4_FLOW:
3544 	case SCTP_V4_FLOW:
3545 		if ((nfc->data & RXH_L4_B_0_1) ||
3546 		    (nfc->data & RXH_L4_B_2_3))
3547 			return -EINVAL;
3548 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3549 		break;
3550 	case AH_ESP_V6_FLOW:
3551 	case AH_V6_FLOW:
3552 	case ESP_V6_FLOW:
3553 	case SCTP_V6_FLOW:
3554 		if ((nfc->data & RXH_L4_B_0_1) ||
3555 		    (nfc->data & RXH_L4_B_2_3))
3556 			return -EINVAL;
3557 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3558 		break;
3559 	case IPV4_FLOW:
3560 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3561 			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3562 		break;
3563 	case IPV6_FLOW:
3564 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3565 			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3566 		break;
3567 	default:
3568 		return -EINVAL;
3569 	}
3570 
3571 	if (flow_pctype) {
3572 		i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3573 					       flow_pctype)) |
3574 			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3575 					       flow_pctype)) << 32);
3576 		i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3577 		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3578 				  (u32)i_set);
3579 		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3580 				  (u32)(i_set >> 32));
3581 		hena |= BIT_ULL(flow_pctype);
3582 	}
3583 
3584 	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3585 	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3586 	i40e_flush(hw);
3587 
3588 	return 0;
3589 }
3590 
3591 /**
3592  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3593  * @vsi: Pointer to the targeted VSI
3594  * @input: The filter to update or NULL to indicate deletion
3595  * @sw_idx: Software index to the filter
3596  * @cmd: The command to get or set Rx flow classification rules
3597  *
3598  * This function updates (or deletes) a Flow Director entry from
3599  * the hlist of the corresponding PF
3600  *
3601  * Returns 0 on success
3602  **/
3603 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3604 					  struct i40e_fdir_filter *input,
3605 					  u16 sw_idx,
3606 					  struct ethtool_rxnfc *cmd)
3607 {
3608 	struct i40e_fdir_filter *rule, *parent;
3609 	struct i40e_pf *pf = vsi->back;
3610 	struct hlist_node *node2;
3611 	int err = -EINVAL;
3612 
3613 	parent = NULL;
3614 	rule = NULL;
3615 
3616 	hlist_for_each_entry_safe(rule, node2,
3617 				  &pf->fdir_filter_list, fdir_node) {
3618 		/* hash found, or no matching entry */
3619 		if (rule->fd_id >= sw_idx)
3620 			break;
3621 		parent = rule;
3622 	}
3623 
3624 	/* if there is an old rule occupying our place remove it */
3625 	if (rule && (rule->fd_id == sw_idx)) {
3626 		/* Remove this rule, since we're either deleting it, or
3627 		 * replacing it.
3628 		 */
3629 		err = i40e_add_del_fdir(vsi, rule, false);
3630 		hlist_del(&rule->fdir_node);
3631 		kfree(rule);
3632 		pf->fdir_pf_active_filters--;
3633 	}
3634 
3635 	/* If we weren't given an input, this is a delete, so just return the
3636 	 * error code indicating if there was an entry at the requested slot
3637 	 */
3638 	if (!input)
3639 		return err;
3640 
3641 	/* Otherwise, install the new rule as requested */
3642 	INIT_HLIST_NODE(&input->fdir_node);
3643 
3644 	/* add filter to the list */
3645 	if (parent)
3646 		hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3647 	else
3648 		hlist_add_head(&input->fdir_node,
3649 			       &pf->fdir_filter_list);
3650 
3651 	/* update counts */
3652 	pf->fdir_pf_active_filters++;
3653 
3654 	return 0;
3655 }
3656 
3657 /**
3658  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3659  * @pf: pointer to PF structure
3660  *
3661  * This function searches the list of filters and determines which FLX_PIT
3662  * entries are still required. It will prune any entries which are no longer
3663  * in use after the deletion.
3664  **/
3665 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3666 {
3667 	struct i40e_flex_pit *entry, *tmp;
3668 	struct i40e_fdir_filter *rule;
3669 
3670 	/* First, we'll check the l3 table */
3671 	list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3672 		bool found = false;
3673 
3674 		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3675 			if (rule->flow_type != IP_USER_FLOW)
3676 				continue;
3677 			if (rule->flex_filter &&
3678 			    rule->flex_offset == entry->src_offset) {
3679 				found = true;
3680 				break;
3681 			}
3682 		}
3683 
3684 		/* If we didn't find the filter, then we can prune this entry
3685 		 * from the list.
3686 		 */
3687 		if (!found) {
3688 			list_del(&entry->list);
3689 			kfree(entry);
3690 		}
3691 	}
3692 
3693 	/* Followed by the L4 table */
3694 	list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3695 		bool found = false;
3696 
3697 		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3698 			/* Skip this filter if it's L3, since we already
3699 			 * checked those in the above loop
3700 			 */
3701 			if (rule->flow_type == IP_USER_FLOW)
3702 				continue;
3703 			if (rule->flex_filter &&
3704 			    rule->flex_offset == entry->src_offset) {
3705 				found = true;
3706 				break;
3707 			}
3708 		}
3709 
3710 		/* If we didn't find the filter, then we can prune this entry
3711 		 * from the list.
3712 		 */
3713 		if (!found) {
3714 			list_del(&entry->list);
3715 			kfree(entry);
3716 		}
3717 	}
3718 }
3719 
3720 /**
3721  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3722  * @vsi: Pointer to the targeted VSI
3723  * @cmd: The command to get or set Rx flow classification rules
3724  *
3725  * The function removes a Flow Director filter entry from the
3726  * hlist of the corresponding PF
3727  *
3728  * Returns 0 on success
3729  */
3730 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3731 			       struct ethtool_rxnfc *cmd)
3732 {
3733 	struct ethtool_rx_flow_spec *fsp =
3734 		(struct ethtool_rx_flow_spec *)&cmd->fs;
3735 	struct i40e_pf *pf = vsi->back;
3736 	int ret = 0;
3737 
3738 	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3739 	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3740 		return -EBUSY;
3741 
3742 	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3743 		return -EBUSY;
3744 
3745 	ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3746 
3747 	i40e_prune_flex_pit_list(pf);
3748 
3749 	i40e_fdir_check_and_reenable(pf);
3750 	return ret;
3751 }
3752 
3753 /**
3754  * i40e_unused_pit_index - Find an unused PIT index for given list
3755  * @pf: the PF data structure
3756  *
3757  * Find the first unused flexible PIT index entry. We search both the L3 and
3758  * L4 flexible PIT lists so that the returned index is unique and unused by
3759  * either currently programmed L3 or L4 filters. We use a bit field as storage
3760  * to track which indexes are already used.
3761  **/
3762 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3763 {
3764 	unsigned long available_index = 0xFF;
3765 	struct i40e_flex_pit *entry;
3766 
3767 	/* We need to make sure that the new index isn't in use by either L3
3768 	 * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3769 	 * L4 to use the same index.
3770 	 */
3771 
3772 	list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3773 		clear_bit(entry->pit_index, &available_index);
3774 
3775 	list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3776 		clear_bit(entry->pit_index, &available_index);
3777 
3778 	return find_first_bit(&available_index, 8);
3779 }
3780 
3781 /**
3782  * i40e_find_flex_offset - Find an existing flex src_offset
3783  * @flex_pit_list: L3 or L4 flex PIT list
3784  * @src_offset: new src_offset to find
3785  *
3786  * Searches the flex_pit_list for an existing offset. If no offset is
3787  * currently programmed, then this will return an ERR_PTR if there is no space
3788  * to add a new offset, otherwise it returns NULL.
3789  **/
3790 static
3791 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3792 					    u16 src_offset)
3793 {
3794 	struct i40e_flex_pit *entry;
3795 	int size = 0;
3796 
3797 	/* Search for the src_offset first. If we find a matching entry
3798 	 * already programmed, we can simply re-use it.
3799 	 */
3800 	list_for_each_entry(entry, flex_pit_list, list) {
3801 		size++;
3802 		if (entry->src_offset == src_offset)
3803 			return entry;
3804 	}
3805 
3806 	/* If we haven't found an entry yet, then the provided src offset has
3807 	 * not yet been programmed. We will program the src offset later on,
3808 	 * but we need to indicate whether there is enough space to do so
3809 	 * here. We'll make use of ERR_PTR for this purpose.
3810 	 */
3811 	if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3812 		return ERR_PTR(-ENOSPC);
3813 
3814 	return NULL;
3815 }
3816 
3817 /**
3818  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3819  * @flex_pit_list: L3 or L4 flex PIT list
3820  * @src_offset: new src_offset to add
3821  * @pit_index: the PIT index to program
3822  *
3823  * This function programs the new src_offset to the list. It is expected that
3824  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3825  * that this offset is not programmed, and that the list has enough space to
3826  * store another offset.
3827  *
3828  * Returns 0 on success, and negative value on error.
3829  **/
3830 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3831 				u16 src_offset,
3832 				u8 pit_index)
3833 {
3834 	struct i40e_flex_pit *new_pit, *entry;
3835 
3836 	new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3837 	if (!new_pit)
3838 		return -ENOMEM;
3839 
3840 	new_pit->src_offset = src_offset;
3841 	new_pit->pit_index = pit_index;
3842 
3843 	/* We need to insert this item such that the list is sorted by
3844 	 * src_offset in ascending order.
3845 	 */
3846 	list_for_each_entry(entry, flex_pit_list, list) {
3847 		if (new_pit->src_offset < entry->src_offset) {
3848 			list_add_tail(&new_pit->list, &entry->list);
3849 			return 0;
3850 		}
3851 
3852 		/* If we found an entry with our offset already programmed we
3853 		 * can simply return here, after freeing the memory. However,
3854 		 * if the pit_index does not match we need to report an error.
3855 		 */
3856 		if (new_pit->src_offset == entry->src_offset) {
3857 			int err = 0;
3858 
3859 			/* If the PIT index is not the same we can't re-use
3860 			 * the entry, so we must report an error.
3861 			 */
3862 			if (new_pit->pit_index != entry->pit_index)
3863 				err = -EINVAL;
3864 
3865 			kfree(new_pit);
3866 			return err;
3867 		}
3868 	}
3869 
3870 	/* If we reached here, then we haven't yet added the item. This means
3871 	 * that we should add the item at the end of the list.
3872 	 */
3873 	list_add_tail(&new_pit->list, flex_pit_list);
3874 	return 0;
3875 }
3876 
3877 /**
3878  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3879  * @pf: Pointer to the PF structure
3880  * @flex_pit_list: list of flexible src offsets in use
3881  * @flex_pit_start: index to first entry for this section of the table
3882  *
3883  * In order to handle flexible data, the hardware uses a table of values
3884  * called the FLX_PIT table. This table is used to indicate which sections of
3885  * the input correspond to what PIT index values. Unfortunately, hardware is
3886  * very restrictive about programming this table. Entries must be ordered by
3887  * src_offset in ascending order, without duplicates. Additionally, unused
3888  * entries must be set to the unused index value, and must have valid size and
3889  * length according to the src_offset ordering.
3890  *
3891  * This function will reprogram the FLX_PIT register from a book-keeping
3892  * structure that we guarantee is already ordered correctly, and has no more
3893  * than 3 entries.
3894  *
3895  * To make things easier, we only support flexible values of one word length,
3896  * rather than allowing variable length flexible values.
3897  **/
3898 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3899 				      struct list_head *flex_pit_list,
3900 				      int flex_pit_start)
3901 {
3902 	struct i40e_flex_pit *entry = NULL;
3903 	u16 last_offset = 0;
3904 	int i = 0, j = 0;
3905 
3906 	/* First, loop over the list of flex PIT entries, and reprogram the
3907 	 * registers.
3908 	 */
3909 	list_for_each_entry(entry, flex_pit_list, list) {
3910 		/* We have to be careful when programming values for the
3911 		 * largest SRC_OFFSET value. It is possible that adding
3912 		 * additional empty values at the end would overflow the space
3913 		 * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3914 		 * we check here and add the empty values prior to adding the
3915 		 * largest value.
3916 		 *
3917 		 * To determine this, we will use a loop from i+1 to 3, which
3918 		 * will determine whether the unused entries would have valid
3919 		 * SRC_OFFSET. Note that there cannot be extra entries past
3920 		 * this value, because the only valid values would have been
3921 		 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3922 		 * have been added to the list in the first place.
3923 		 */
3924 		for (j = i + 1; j < 3; j++) {
3925 			u16 offset = entry->src_offset + j;
3926 			int index = flex_pit_start + i;
3927 			u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3928 						       1,
3929 						       offset - 3);
3930 
3931 			if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3932 				i40e_write_rx_ctl(&pf->hw,
3933 						  I40E_PRTQF_FLX_PIT(index),
3934 						  value);
3935 				i++;
3936 			}
3937 		}
3938 
3939 		/* Now, we can program the actual value into the table */
3940 		i40e_write_rx_ctl(&pf->hw,
3941 				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3942 				  I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3943 						     1,
3944 						     entry->src_offset));
3945 		i++;
3946 	}
3947 
3948 	/* In order to program the last entries in the table, we need to
3949 	 * determine the valid offset. If the list is empty, we'll just start
3950 	 * with 0. Otherwise, we'll start with the last item offset and add 1.
3951 	 * This ensures that all entries have valid sizes. If we don't do this
3952 	 * correctly, the hardware will disable flexible field parsing.
3953 	 */
3954 	if (!list_empty(flex_pit_list))
3955 		last_offset = list_prev_entry(entry, list)->src_offset + 1;
3956 
3957 	for (; i < 3; i++, last_offset++) {
3958 		i40e_write_rx_ctl(&pf->hw,
3959 				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3960 				  I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3961 						     1,
3962 						     last_offset));
3963 	}
3964 }
3965 
3966 /**
3967  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3968  * @pf: pointer to the PF structure
3969  *
3970  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3971  * internal helper function for implementation details.
3972  **/
3973 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3974 {
3975 	__i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3976 				  I40E_FLEX_PIT_IDX_START_L3);
3977 
3978 	__i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3979 				  I40E_FLEX_PIT_IDX_START_L4);
3980 
3981 	/* We also need to program the L3 and L4 GLQF ORT register */
3982 	i40e_write_rx_ctl(&pf->hw,
3983 			  I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
3984 			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3985 					    3, 1));
3986 
3987 	i40e_write_rx_ctl(&pf->hw,
3988 			  I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
3989 			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
3990 					    3, 1));
3991 }
3992 
3993 /**
3994  * i40e_flow_str - Converts a flow_type into a human readable string
3995  * @fsp: the flow specification
3996  *
3997  * Currently only flow types we support are included here, and the string
3998  * value attempts to match what ethtool would use to configure this flow type.
3999  **/
4000 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
4001 {
4002 	switch (fsp->flow_type & ~FLOW_EXT) {
4003 	case TCP_V4_FLOW:
4004 		return "tcp4";
4005 	case UDP_V4_FLOW:
4006 		return "udp4";
4007 	case SCTP_V4_FLOW:
4008 		return "sctp4";
4009 	case IP_USER_FLOW:
4010 		return "ip4";
4011 	case TCP_V6_FLOW:
4012 		return "tcp6";
4013 	case UDP_V6_FLOW:
4014 		return "udp6";
4015 	case SCTP_V6_FLOW:
4016 		return "sctp6";
4017 	case IPV6_USER_FLOW:
4018 		return "ip6";
4019 	default:
4020 		return "unknown";
4021 	}
4022 }
4023 
4024 /**
4025  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
4026  * @pit_index: PIT index to convert
4027  *
4028  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
4029  * of range.
4030  **/
4031 static u64 i40e_pit_index_to_mask(int pit_index)
4032 {
4033 	switch (pit_index) {
4034 	case 0:
4035 		return I40E_FLEX_50_MASK;
4036 	case 1:
4037 		return I40E_FLEX_51_MASK;
4038 	case 2:
4039 		return I40E_FLEX_52_MASK;
4040 	case 3:
4041 		return I40E_FLEX_53_MASK;
4042 	case 4:
4043 		return I40E_FLEX_54_MASK;
4044 	case 5:
4045 		return I40E_FLEX_55_MASK;
4046 	case 6:
4047 		return I40E_FLEX_56_MASK;
4048 	case 7:
4049 		return I40E_FLEX_57_MASK;
4050 	default:
4051 		return 0;
4052 	}
4053 }
4054 
4055 /**
4056  * i40e_print_input_set - Show changes between two input sets
4057  * @vsi: the vsi being configured
4058  * @old: the old input set
4059  * @new: the new input set
4060  *
4061  * Print the difference between old and new input sets by showing which series
4062  * of words are toggled on or off. Only displays the bits we actually support
4063  * changing.
4064  **/
4065 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
4066 {
4067 	struct i40e_pf *pf = vsi->back;
4068 	bool old_value, new_value;
4069 	int i;
4070 
4071 	old_value = !!(old & I40E_L3_SRC_MASK);
4072 	new_value = !!(new & I40E_L3_SRC_MASK);
4073 	if (old_value != new_value)
4074 		netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
4075 			   old_value ? "ON" : "OFF",
4076 			   new_value ? "ON" : "OFF");
4077 
4078 	old_value = !!(old & I40E_L3_DST_MASK);
4079 	new_value = !!(new & I40E_L3_DST_MASK);
4080 	if (old_value != new_value)
4081 		netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
4082 			   old_value ? "ON" : "OFF",
4083 			   new_value ? "ON" : "OFF");
4084 
4085 	old_value = !!(old & I40E_L4_SRC_MASK);
4086 	new_value = !!(new & I40E_L4_SRC_MASK);
4087 	if (old_value != new_value)
4088 		netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
4089 			   old_value ? "ON" : "OFF",
4090 			   new_value ? "ON" : "OFF");
4091 
4092 	old_value = !!(old & I40E_L4_DST_MASK);
4093 	new_value = !!(new & I40E_L4_DST_MASK);
4094 	if (old_value != new_value)
4095 		netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
4096 			   old_value ? "ON" : "OFF",
4097 			   new_value ? "ON" : "OFF");
4098 
4099 	old_value = !!(old & I40E_VERIFY_TAG_MASK);
4100 	new_value = !!(new & I40E_VERIFY_TAG_MASK);
4101 	if (old_value != new_value)
4102 		netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
4103 			   old_value ? "ON" : "OFF",
4104 			   new_value ? "ON" : "OFF");
4105 
4106 	/* Show change of flexible filter entries */
4107 	for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
4108 		u64 flex_mask = i40e_pit_index_to_mask(i);
4109 
4110 		old_value = !!(old & flex_mask);
4111 		new_value = !!(new & flex_mask);
4112 		if (old_value != new_value)
4113 			netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4114 				   i,
4115 				   old_value ? "ON" : "OFF",
4116 				   new_value ? "ON" : "OFF");
4117 	}
4118 
4119 	netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
4120 		   old);
4121 	netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4122 		   new);
4123 }
4124 
4125 /**
4126  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4127  * @vsi: pointer to the targeted VSI
4128  * @fsp: pointer to Rx flow specification
4129  * @userdef: userdefined data from flow specification
4130  *
4131  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4132  * for partial matches exists with a few limitations. First, hardware only
4133  * supports masking by word boundary (2 bytes) and not per individual bit.
4134  * Second, hardware is limited to using one mask for a flow type and cannot
4135  * use a separate mask for each filter.
4136  *
4137  * To support these limitations, if we already have a configured filter for
4138  * the specified type, this function enforces that new filters of the type
4139  * match the configured input set. Otherwise, if we do not have a filter of
4140  * the specified type, we allow the input set to be updated to match the
4141  * desired filter.
4142  *
4143  * To help ensure that administrators understand why filters weren't displayed
4144  * as supported, we print a diagnostic message displaying how the input set
4145  * would change and warning to delete the preexisting filters if required.
4146  *
4147  * Returns 0 on successful input set match, and a negative return code on
4148  * failure.
4149  **/
4150 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4151 				     struct ethtool_rx_flow_spec *fsp,
4152 				     struct i40e_rx_flow_userdef *userdef)
4153 {
4154 	static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
4155 		cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
4156 		cpu_to_be32(0xffffffff)};
4157 	struct ethtool_tcpip6_spec *tcp_ip6_spec;
4158 	struct ethtool_usrip6_spec *usr_ip6_spec;
4159 	struct ethtool_tcpip4_spec *tcp_ip4_spec;
4160 	struct ethtool_usrip4_spec *usr_ip4_spec;
4161 	struct i40e_pf *pf = vsi->back;
4162 	u64 current_mask, new_mask;
4163 	bool new_flex_offset = false;
4164 	bool flex_l3 = false;
4165 	u16 *fdir_filter_count;
4166 	u16 index, src_offset = 0;
4167 	u8 pit_index = 0;
4168 	int err;
4169 
4170 	switch (fsp->flow_type & ~FLOW_EXT) {
4171 	case SCTP_V4_FLOW:
4172 		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4173 		fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4174 		break;
4175 	case TCP_V4_FLOW:
4176 		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4177 		fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4178 		break;
4179 	case UDP_V4_FLOW:
4180 		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4181 		fdir_filter_count = &pf->fd_udp4_filter_cnt;
4182 		break;
4183 	case SCTP_V6_FLOW:
4184 		index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
4185 		fdir_filter_count = &pf->fd_sctp6_filter_cnt;
4186 		break;
4187 	case TCP_V6_FLOW:
4188 		index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
4189 		fdir_filter_count = &pf->fd_tcp6_filter_cnt;
4190 		break;
4191 	case UDP_V6_FLOW:
4192 		index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
4193 		fdir_filter_count = &pf->fd_udp6_filter_cnt;
4194 		break;
4195 	case IP_USER_FLOW:
4196 		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4197 		fdir_filter_count = &pf->fd_ip4_filter_cnt;
4198 		flex_l3 = true;
4199 		break;
4200 	case IPV6_USER_FLOW:
4201 		index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
4202 		fdir_filter_count = &pf->fd_ip6_filter_cnt;
4203 		flex_l3 = true;
4204 		break;
4205 	default:
4206 		return -EOPNOTSUPP;
4207 	}
4208 
4209 	/* Read the current input set from register memory. */
4210 	current_mask = i40e_read_fd_input_set(pf, index);
4211 	new_mask = current_mask;
4212 
4213 	/* Determine, if any, the required changes to the input set in order
4214 	 * to support the provided mask.
4215 	 *
4216 	 * Hardware only supports masking at word (2 byte) granularity and does
4217 	 * not support full bitwise masking. This implementation simplifies
4218 	 * even further and only supports fully enabled or fully disabled
4219 	 * masks for each field, even though we could split the ip4src and
4220 	 * ip4dst fields.
4221 	 */
4222 	switch (fsp->flow_type & ~FLOW_EXT) {
4223 	case SCTP_V4_FLOW:
4224 		new_mask &= ~I40E_VERIFY_TAG_MASK;
4225 		fallthrough;
4226 	case TCP_V4_FLOW:
4227 	case UDP_V4_FLOW:
4228 		tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4229 
4230 		/* IPv4 source address */
4231 		if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4232 			new_mask |= I40E_L3_SRC_MASK;
4233 		else if (!tcp_ip4_spec->ip4src)
4234 			new_mask &= ~I40E_L3_SRC_MASK;
4235 		else
4236 			return -EOPNOTSUPP;
4237 
4238 		/* IPv4 destination address */
4239 		if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4240 			new_mask |= I40E_L3_DST_MASK;
4241 		else if (!tcp_ip4_spec->ip4dst)
4242 			new_mask &= ~I40E_L3_DST_MASK;
4243 		else
4244 			return -EOPNOTSUPP;
4245 
4246 		/* L4 source port */
4247 		if (tcp_ip4_spec->psrc == htons(0xFFFF))
4248 			new_mask |= I40E_L4_SRC_MASK;
4249 		else if (!tcp_ip4_spec->psrc)
4250 			new_mask &= ~I40E_L4_SRC_MASK;
4251 		else
4252 			return -EOPNOTSUPP;
4253 
4254 		/* L4 destination port */
4255 		if (tcp_ip4_spec->pdst == htons(0xFFFF))
4256 			new_mask |= I40E_L4_DST_MASK;
4257 		else if (!tcp_ip4_spec->pdst)
4258 			new_mask &= ~I40E_L4_DST_MASK;
4259 		else
4260 			return -EOPNOTSUPP;
4261 
4262 		/* Filtering on Type of Service is not supported. */
4263 		if (tcp_ip4_spec->tos)
4264 			return -EOPNOTSUPP;
4265 
4266 		break;
4267 	case SCTP_V6_FLOW:
4268 		new_mask &= ~I40E_VERIFY_TAG_MASK;
4269 		fallthrough;
4270 	case TCP_V6_FLOW:
4271 	case UDP_V6_FLOW:
4272 		tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
4273 
4274 		/* Check if user provided IPv6 source address. */
4275 		if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
4276 				    (struct in6_addr *)&ipv6_full_mask))
4277 			new_mask |= I40E_L3_V6_SRC_MASK;
4278 		else if (ipv6_addr_any((struct in6_addr *)
4279 				       &tcp_ip6_spec->ip6src))
4280 			new_mask &= ~I40E_L3_V6_SRC_MASK;
4281 		else
4282 			return -EOPNOTSUPP;
4283 
4284 		/* Check if user provided destination address. */
4285 		if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
4286 				    (struct in6_addr *)&ipv6_full_mask))
4287 			new_mask |= I40E_L3_V6_DST_MASK;
4288 		else if (ipv6_addr_any((struct in6_addr *)
4289 				       &tcp_ip6_spec->ip6dst))
4290 			new_mask &= ~I40E_L3_V6_DST_MASK;
4291 		else
4292 			return -EOPNOTSUPP;
4293 
4294 		/* L4 source port */
4295 		if (tcp_ip6_spec->psrc == htons(0xFFFF))
4296 			new_mask |= I40E_L4_SRC_MASK;
4297 		else if (!tcp_ip6_spec->psrc)
4298 			new_mask &= ~I40E_L4_SRC_MASK;
4299 		else
4300 			return -EOPNOTSUPP;
4301 
4302 		/* L4 destination port */
4303 		if (tcp_ip6_spec->pdst == htons(0xFFFF))
4304 			new_mask |= I40E_L4_DST_MASK;
4305 		else if (!tcp_ip6_spec->pdst)
4306 			new_mask &= ~I40E_L4_DST_MASK;
4307 		else
4308 			return -EOPNOTSUPP;
4309 
4310 		/* Filtering on Traffic Classes is not supported. */
4311 		if (tcp_ip6_spec->tclass)
4312 			return -EOPNOTSUPP;
4313 		break;
4314 	case IP_USER_FLOW:
4315 		usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4316 
4317 		/* IPv4 source address */
4318 		if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4319 			new_mask |= I40E_L3_SRC_MASK;
4320 		else if (!usr_ip4_spec->ip4src)
4321 			new_mask &= ~I40E_L3_SRC_MASK;
4322 		else
4323 			return -EOPNOTSUPP;
4324 
4325 		/* IPv4 destination address */
4326 		if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4327 			new_mask |= I40E_L3_DST_MASK;
4328 		else if (!usr_ip4_spec->ip4dst)
4329 			new_mask &= ~I40E_L3_DST_MASK;
4330 		else
4331 			return -EOPNOTSUPP;
4332 
4333 		/* First 4 bytes of L4 header */
4334 		if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4335 			new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4336 		else if (!usr_ip4_spec->l4_4_bytes)
4337 			new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4338 		else
4339 			return -EOPNOTSUPP;
4340 
4341 		/* Filtering on Type of Service is not supported. */
4342 		if (usr_ip4_spec->tos)
4343 			return -EOPNOTSUPP;
4344 
4345 		/* Filtering on IP version is not supported */
4346 		if (usr_ip4_spec->ip_ver)
4347 			return -EINVAL;
4348 
4349 		/* Filtering on L4 protocol is not supported */
4350 		if (usr_ip4_spec->proto)
4351 			return -EINVAL;
4352 
4353 		break;
4354 	case IPV6_USER_FLOW:
4355 		usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
4356 
4357 		/* Check if user provided IPv6 source address. */
4358 		if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
4359 				    (struct in6_addr *)&ipv6_full_mask))
4360 			new_mask |= I40E_L3_V6_SRC_MASK;
4361 		else if (ipv6_addr_any((struct in6_addr *)
4362 				       &usr_ip6_spec->ip6src))
4363 			new_mask &= ~I40E_L3_V6_SRC_MASK;
4364 		else
4365 			return -EOPNOTSUPP;
4366 
4367 		/* Check if user provided destination address. */
4368 		if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
4369 				    (struct in6_addr *)&ipv6_full_mask))
4370 			new_mask |= I40E_L3_V6_DST_MASK;
4371 		else if (ipv6_addr_any((struct in6_addr *)
4372 				       &usr_ip6_spec->ip6src))
4373 			new_mask &= ~I40E_L3_V6_DST_MASK;
4374 		else
4375 			return -EOPNOTSUPP;
4376 
4377 		if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4378 			new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4379 		else if (!usr_ip6_spec->l4_4_bytes)
4380 			new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4381 		else
4382 			return -EOPNOTSUPP;
4383 
4384 		/* Filtering on Traffic class is not supported. */
4385 		if (usr_ip6_spec->tclass)
4386 			return -EOPNOTSUPP;
4387 
4388 		/* Filtering on L4 protocol is not supported */
4389 		if (usr_ip6_spec->l4_proto)
4390 			return -EINVAL;
4391 
4392 		break;
4393 	default:
4394 		return -EOPNOTSUPP;
4395 	}
4396 
4397 	if (fsp->flow_type & FLOW_EXT) {
4398 		/* Allow only 802.1Q and no etype defined, as
4399 		 * later it's modified to 0x8100
4400 		 */
4401 		if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
4402 		    fsp->h_ext.vlan_etype != 0)
4403 			return -EOPNOTSUPP;
4404 		if (fsp->m_ext.vlan_tci == htons(0xFFFF))
4405 			new_mask |= I40E_VLAN_SRC_MASK;
4406 		else
4407 			new_mask &= ~I40E_VLAN_SRC_MASK;
4408 	}
4409 
4410 	/* First, clear all flexible filter entries */
4411 	new_mask &= ~I40E_FLEX_INPUT_MASK;
4412 
4413 	/* If we have a flexible filter, try to add this offset to the correct
4414 	 * flexible filter PIT list. Once finished, we can update the mask.
4415 	 * If the src_offset changed, we will get a new mask value which will
4416 	 * trigger an input set change.
4417 	 */
4418 	if (userdef->flex_filter) {
4419 		struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4420 
4421 		/* Flexible offset must be even, since the flexible payload
4422 		 * must be aligned on 2-byte boundary.
4423 		 */
4424 		if (userdef->flex_offset & 0x1) {
4425 			dev_warn(&pf->pdev->dev,
4426 				 "Flexible data offset must be 2-byte aligned\n");
4427 			return -EINVAL;
4428 		}
4429 
4430 		src_offset = userdef->flex_offset >> 1;
4431 
4432 		/* FLX_PIT source offset value is only so large */
4433 		if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4434 			dev_warn(&pf->pdev->dev,
4435 				 "Flexible data must reside within first 64 bytes of the packet payload\n");
4436 			return -EINVAL;
4437 		}
4438 
4439 		/* See if this offset has already been programmed. If we get
4440 		 * an ERR_PTR, then the filter is not safe to add. Otherwise,
4441 		 * if we get a NULL pointer, this means we will need to add
4442 		 * the offset.
4443 		 */
4444 		flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
4445 						 src_offset);
4446 		if (IS_ERR(flex_pit))
4447 			return PTR_ERR(flex_pit);
4448 
4449 		/* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4450 		 * packet types, and thus we need to program both L3 and L4
4451 		 * flexible values. These must have identical flexible index,
4452 		 * as otherwise we can't correctly program the input set. So
4453 		 * we'll find both an L3 and L4 index and make sure they are
4454 		 * the same.
4455 		 */
4456 		if (flex_l3) {
4457 			l3_flex_pit =
4458 				i40e_find_flex_offset(&pf->l3_flex_pit_list,
4459 						      src_offset);
4460 			if (IS_ERR(l3_flex_pit))
4461 				return PTR_ERR(l3_flex_pit);
4462 
4463 			if (flex_pit) {
4464 				/* If we already had a matching L4 entry, we
4465 				 * need to make sure that the L3 entry we
4466 				 * obtained uses the same index.
4467 				 */
4468 				if (l3_flex_pit) {
4469 					if (l3_flex_pit->pit_index !=
4470 					    flex_pit->pit_index) {
4471 						return -EINVAL;
4472 					}
4473 				} else {
4474 					new_flex_offset = true;
4475 				}
4476 			} else {
4477 				flex_pit = l3_flex_pit;
4478 			}
4479 		}
4480 
4481 		/* If we didn't find an existing flex offset, we need to
4482 		 * program a new one. However, we don't immediately program it
4483 		 * here because we will wait to program until after we check
4484 		 * that it is safe to change the input set.
4485 		 */
4486 		if (!flex_pit) {
4487 			new_flex_offset = true;
4488 			pit_index = i40e_unused_pit_index(pf);
4489 		} else {
4490 			pit_index = flex_pit->pit_index;
4491 		}
4492 
4493 		/* Update the mask with the new offset */
4494 		new_mask |= i40e_pit_index_to_mask(pit_index);
4495 	}
4496 
4497 	/* If the mask and flexible filter offsets for this filter match the
4498 	 * currently programmed values we don't need any input set change, so
4499 	 * this filter is safe to install.
4500 	 */
4501 	if (new_mask == current_mask && !new_flex_offset)
4502 		return 0;
4503 
4504 	netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4505 		   i40e_flow_str(fsp));
4506 	i40e_print_input_set(vsi, current_mask, new_mask);
4507 	if (new_flex_offset) {
4508 		netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4509 			   pit_index, src_offset);
4510 	}
4511 
4512 	/* Hardware input sets are global across multiple ports, so even the
4513 	 * main port cannot change them when in MFP mode as this would impact
4514 	 * any filters on the other ports.
4515 	 */
4516 	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4517 		netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4518 		return -EOPNOTSUPP;
4519 	}
4520 
4521 	/* This filter requires us to update the input set. However, hardware
4522 	 * only supports one input set per flow type, and does not support
4523 	 * separate masks for each filter. This means that we can only support
4524 	 * a single mask for all filters of a specific type.
4525 	 *
4526 	 * If we have preexisting filters, they obviously depend on the
4527 	 * current programmed input set. Display a diagnostic message in this
4528 	 * case explaining why the filter could not be accepted.
4529 	 */
4530 	if (*fdir_filter_count) {
4531 		netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4532 			  i40e_flow_str(fsp),
4533 			  *fdir_filter_count);
4534 		return -EOPNOTSUPP;
4535 	}
4536 
4537 	i40e_write_fd_input_set(pf, index, new_mask);
4538 
4539 	/* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4540 	 * frames. If we're programming the input set for IPv4/Other, we also
4541 	 * need to program the IPv4/Fragmented input set. Since we don't have
4542 	 * separate support, we'll always assume and enforce that the two flow
4543 	 * types must have matching input sets.
4544 	 */
4545 	if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4546 		i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4547 					new_mask);
4548 
4549 	/* Add the new offset and update table, if necessary */
4550 	if (new_flex_offset) {
4551 		err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4552 					   pit_index);
4553 		if (err)
4554 			return err;
4555 
4556 		if (flex_l3) {
4557 			err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4558 						   src_offset,
4559 						   pit_index);
4560 			if (err)
4561 				return err;
4562 		}
4563 
4564 		i40e_reprogram_flex_pit(pf);
4565 	}
4566 
4567 	return 0;
4568 }
4569 
4570 /**
4571  * i40e_match_fdir_filter - Return true of two filters match
4572  * @a: pointer to filter struct
4573  * @b: pointer to filter struct
4574  *
4575  * Returns true if the two filters match exactly the same criteria. I.e. they
4576  * match the same flow type and have the same parameters. We don't need to
4577  * check any input-set since all filters of the same flow type must use the
4578  * same input set.
4579  **/
4580 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4581 				   struct i40e_fdir_filter *b)
4582 {
4583 	/* The filters do not much if any of these criteria differ. */
4584 	if (a->dst_ip != b->dst_ip ||
4585 	    a->src_ip != b->src_ip ||
4586 	    a->dst_port != b->dst_port ||
4587 	    a->src_port != b->src_port ||
4588 	    a->flow_type != b->flow_type ||
4589 	    a->ipl4_proto != b->ipl4_proto ||
4590 	    a->vlan_tag != b->vlan_tag ||
4591 	    a->vlan_etype != b->vlan_etype)
4592 		return false;
4593 
4594 	return true;
4595 }
4596 
4597 /**
4598  * i40e_disallow_matching_filters - Check that new filters differ
4599  * @vsi: pointer to the targeted VSI
4600  * @input: new filter to check
4601  *
4602  * Due to hardware limitations, it is not possible for two filters that match
4603  * similar criteria to be programmed at the same time. This is true for a few
4604  * reasons:
4605  *
4606  * (a) all filters matching a particular flow type must use the same input
4607  * set, that is they must match the same criteria.
4608  * (b) different flow types will never match the same packet, as the flow type
4609  * is decided by hardware before checking which rules apply.
4610  * (c) hardware has no way to distinguish which order filters apply in.
4611  *
4612  * Due to this, we can't really support using the location data to order
4613  * filters in the hardware parsing. It is technically possible for the user to
4614  * request two filters matching the same criteria but which select different
4615  * queues. In this case, rather than keep both filters in the list, we reject
4616  * the 2nd filter when the user requests adding it.
4617  *
4618  * This avoids needing to track location for programming the filter to
4619  * hardware, and ensures that we avoid some strange scenarios involving
4620  * deleting filters which match the same criteria.
4621  **/
4622 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4623 					  struct i40e_fdir_filter *input)
4624 {
4625 	struct i40e_pf *pf = vsi->back;
4626 	struct i40e_fdir_filter *rule;
4627 	struct hlist_node *node2;
4628 
4629 	/* Loop through every filter, and check that it doesn't match */
4630 	hlist_for_each_entry_safe(rule, node2,
4631 				  &pf->fdir_filter_list, fdir_node) {
4632 		/* Don't check the filters match if they share the same fd_id,
4633 		 * since the new filter is actually just updating the target
4634 		 * of the old filter.
4635 		 */
4636 		if (rule->fd_id == input->fd_id)
4637 			continue;
4638 
4639 		/* If any filters match, then print a warning message to the
4640 		 * kernel message buffer and bail out.
4641 		 */
4642 		if (i40e_match_fdir_filter(rule, input)) {
4643 			dev_warn(&pf->pdev->dev,
4644 				 "Existing user defined filter %d already matches this flow.\n",
4645 				 rule->fd_id);
4646 			return -EINVAL;
4647 		}
4648 	}
4649 
4650 	return 0;
4651 }
4652 
4653 /**
4654  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4655  * @vsi: pointer to the targeted VSI
4656  * @cmd: command to get or set RX flow classification rules
4657  *
4658  * Add Flow Director filters for a specific flow spec based on their
4659  * protocol.  Returns 0 if the filters were successfully added.
4660  **/
4661 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4662 				 struct ethtool_rxnfc *cmd)
4663 {
4664 	struct i40e_rx_flow_userdef userdef;
4665 	struct ethtool_rx_flow_spec *fsp;
4666 	struct i40e_fdir_filter *input;
4667 	u16 dest_vsi = 0, q_index = 0;
4668 	struct i40e_pf *pf;
4669 	int ret = -EINVAL;
4670 	u8 dest_ctl;
4671 
4672 	if (!vsi)
4673 		return -EINVAL;
4674 	pf = vsi->back;
4675 
4676 	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4677 		return -EOPNOTSUPP;
4678 
4679 	if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4680 		return -ENOSPC;
4681 
4682 	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4683 	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4684 		return -EBUSY;
4685 
4686 	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4687 		return -EBUSY;
4688 
4689 	fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4690 
4691 	/* Parse the user-defined field */
4692 	if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4693 		return -EINVAL;
4694 
4695 	/* Extended MAC field is not supported */
4696 	if (fsp->flow_type & FLOW_MAC_EXT)
4697 		return -EINVAL;
4698 
4699 	ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4700 	if (ret)
4701 		return ret;
4702 
4703 	if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4704 			      pf->hw.func_caps.fd_filters_guaranteed)) {
4705 		return -EINVAL;
4706 	}
4707 
4708 	/* ring_cookie is either the drop index, or is a mask of the queue
4709 	 * index and VF id we wish to target.
4710 	 */
4711 	if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4712 		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4713 	} else {
4714 		u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4715 		u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4716 
4717 		if (!vf) {
4718 			if (ring >= vsi->num_queue_pairs)
4719 				return -EINVAL;
4720 			dest_vsi = vsi->id;
4721 		} else {
4722 			/* VFs are zero-indexed, so we subtract one here */
4723 			vf--;
4724 
4725 			if (vf >= pf->num_alloc_vfs)
4726 				return -EINVAL;
4727 			if (ring >= pf->vf[vf].num_queue_pairs)
4728 				return -EINVAL;
4729 			dest_vsi = pf->vf[vf].lan_vsi_id;
4730 		}
4731 		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4732 		q_index = ring;
4733 	}
4734 
4735 	input = kzalloc(sizeof(*input), GFP_KERNEL);
4736 
4737 	if (!input)
4738 		return -ENOMEM;
4739 
4740 	input->fd_id = fsp->location;
4741 	input->q_index = q_index;
4742 	input->dest_vsi = dest_vsi;
4743 	input->dest_ctl = dest_ctl;
4744 	input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4745 	input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4746 	input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4747 	input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4748 	input->flow_type = fsp->flow_type & ~FLOW_EXT;
4749 
4750 	input->vlan_etype = fsp->h_ext.vlan_etype;
4751 	if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
4752 		input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
4753 	if (fsp->m_ext.vlan_tci && input->vlan_etype)
4754 		input->vlan_tag = fsp->h_ext.vlan_tci;
4755 	if (input->flow_type == IPV6_USER_FLOW ||
4756 	    input->flow_type == UDP_V6_FLOW ||
4757 	    input->flow_type == TCP_V6_FLOW ||
4758 	    input->flow_type == SCTP_V6_FLOW) {
4759 		/* Reverse the src and dest notion, since the HW expects them
4760 		 * to be from Tx perspective where as the input from user is
4761 		 * from Rx filter view.
4762 		 */
4763 		input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
4764 		input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
4765 		input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
4766 		memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
4767 		       sizeof(__be32) * 4);
4768 		memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
4769 		       sizeof(__be32) * 4);
4770 	} else {
4771 		/* Reverse the src and dest notion, since the HW expects them
4772 		 * to be from Tx perspective where as the input from user is
4773 		 * from Rx filter view.
4774 		 */
4775 		input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
4776 		input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4777 		input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4778 		input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4779 		input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4780 	}
4781 
4782 	if (userdef.flex_filter) {
4783 		input->flex_filter = true;
4784 		input->flex_word = cpu_to_be16(userdef.flex_word);
4785 		input->flex_offset = userdef.flex_offset;
4786 	}
4787 
4788 	/* Avoid programming two filters with identical match criteria. */
4789 	ret = i40e_disallow_matching_filters(vsi, input);
4790 	if (ret)
4791 		goto free_filter_memory;
4792 
4793 	/* Add the input filter to the fdir_input_list, possibly replacing
4794 	 * a previous filter. Do not free the input structure after adding it
4795 	 * to the list as this would cause a use-after-free bug.
4796 	 */
4797 	i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4798 	ret = i40e_add_del_fdir(vsi, input, true);
4799 	if (ret)
4800 		goto remove_sw_rule;
4801 	return 0;
4802 
4803 remove_sw_rule:
4804 	hlist_del(&input->fdir_node);
4805 	pf->fdir_pf_active_filters--;
4806 free_filter_memory:
4807 	kfree(input);
4808 	return ret;
4809 }
4810 
4811 /**
4812  * i40e_set_rxnfc - command to set RX flow classification rules
4813  * @netdev: network interface device structure
4814  * @cmd: ethtool rxnfc command
4815  *
4816  * Returns Success if the command is supported.
4817  **/
4818 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4819 {
4820 	struct i40e_netdev_priv *np = netdev_priv(netdev);
4821 	struct i40e_vsi *vsi = np->vsi;
4822 	struct i40e_pf *pf = vsi->back;
4823 	int ret = -EOPNOTSUPP;
4824 
4825 	switch (cmd->cmd) {
4826 	case ETHTOOL_SRXFH:
4827 		ret = i40e_set_rss_hash_opt(pf, cmd);
4828 		break;
4829 	case ETHTOOL_SRXCLSRLINS:
4830 		ret = i40e_add_fdir_ethtool(vsi, cmd);
4831 		break;
4832 	case ETHTOOL_SRXCLSRLDEL:
4833 		ret = i40e_del_fdir_entry(vsi, cmd);
4834 		break;
4835 	default:
4836 		break;
4837 	}
4838 
4839 	return ret;
4840 }
4841 
4842 /**
4843  * i40e_max_channels - get Max number of combined channels supported
4844  * @vsi: vsi pointer
4845  **/
4846 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4847 {
4848 	/* TODO: This code assumes DCB and FD is disabled for now. */
4849 	return vsi->alloc_queue_pairs;
4850 }
4851 
4852 /**
4853  * i40e_get_channels - Get the current channels enabled and max supported etc.
4854  * @dev: network interface device structure
4855  * @ch: ethtool channels structure
4856  *
4857  * We don't support separate tx and rx queues as channels. The other count
4858  * represents how many queues are being used for control. max_combined counts
4859  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4860  * q_vectors since we support a lot more queue pairs than q_vectors.
4861  **/
4862 static void i40e_get_channels(struct net_device *dev,
4863 			      struct ethtool_channels *ch)
4864 {
4865 	struct i40e_netdev_priv *np = netdev_priv(dev);
4866 	struct i40e_vsi *vsi = np->vsi;
4867 	struct i40e_pf *pf = vsi->back;
4868 
4869 	/* report maximum channels */
4870 	ch->max_combined = i40e_max_channels(vsi);
4871 
4872 	/* report info for other vector */
4873 	ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4874 	ch->max_other = ch->other_count;
4875 
4876 	/* Note: This code assumes DCB is disabled for now. */
4877 	ch->combined_count = vsi->num_queue_pairs;
4878 }
4879 
4880 /**
4881  * i40e_set_channels - Set the new channels count.
4882  * @dev: network interface device structure
4883  * @ch: ethtool channels structure
4884  *
4885  * The new channels count may not be the same as requested by the user
4886  * since it gets rounded down to a power of 2 value.
4887  **/
4888 static int i40e_set_channels(struct net_device *dev,
4889 			     struct ethtool_channels *ch)
4890 {
4891 	const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4892 	struct i40e_netdev_priv *np = netdev_priv(dev);
4893 	unsigned int count = ch->combined_count;
4894 	struct i40e_vsi *vsi = np->vsi;
4895 	struct i40e_pf *pf = vsi->back;
4896 	struct i40e_fdir_filter *rule;
4897 	struct hlist_node *node2;
4898 	int new_count;
4899 	int err = 0;
4900 
4901 	/* We do not support setting channels for any other VSI at present */
4902 	if (vsi->type != I40E_VSI_MAIN)
4903 		return -EINVAL;
4904 
4905 	/* We do not support setting channels via ethtool when TCs are
4906 	 * configured through mqprio
4907 	 */
4908 	if (pf->flags & I40E_FLAG_TC_MQPRIO)
4909 		return -EINVAL;
4910 
4911 	/* verify they are not requesting separate vectors */
4912 	if (!count || ch->rx_count || ch->tx_count)
4913 		return -EINVAL;
4914 
4915 	/* verify other_count has not changed */
4916 	if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4917 		return -EINVAL;
4918 
4919 	/* verify the number of channels does not exceed hardware limits */
4920 	if (count > i40e_max_channels(vsi))
4921 		return -EINVAL;
4922 
4923 	/* verify that the number of channels does not invalidate any current
4924 	 * flow director rules
4925 	 */
4926 	hlist_for_each_entry_safe(rule, node2,
4927 				  &pf->fdir_filter_list, fdir_node) {
4928 		if (rule->dest_ctl != drop && count <= rule->q_index) {
4929 			dev_warn(&pf->pdev->dev,
4930 				 "Existing user defined filter %d assigns flow to queue %d\n",
4931 				 rule->fd_id, rule->q_index);
4932 			err = -EINVAL;
4933 		}
4934 	}
4935 
4936 	if (err) {
4937 		dev_err(&pf->pdev->dev,
4938 			"Existing filter rules must be deleted to reduce combined channel count to %d\n",
4939 			count);
4940 		return err;
4941 	}
4942 
4943 	/* update feature limits from largest to smallest supported values */
4944 	/* TODO: Flow director limit, DCB etc */
4945 
4946 	/* use rss_reconfig to rebuild with new queue count and update traffic
4947 	 * class queue mapping
4948 	 */
4949 	new_count = i40e_reconfig_rss_queues(pf, count);
4950 	if (new_count > 0)
4951 		return 0;
4952 	else
4953 		return -EINVAL;
4954 }
4955 
4956 /**
4957  * i40e_get_rxfh_key_size - get the RSS hash key size
4958  * @netdev: network interface device structure
4959  *
4960  * Returns the table size.
4961  **/
4962 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4963 {
4964 	return I40E_HKEY_ARRAY_SIZE;
4965 }
4966 
4967 /**
4968  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4969  * @netdev: network interface device structure
4970  *
4971  * Returns the table size.
4972  **/
4973 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
4974 {
4975 	return I40E_HLUT_ARRAY_SIZE;
4976 }
4977 
4978 /**
4979  * i40e_get_rxfh - get the rx flow hash indirection table
4980  * @netdev: network interface device structure
4981  * @indir: indirection table
4982  * @key: hash key
4983  * @hfunc: hash function
4984  *
4985  * Reads the indirection table directly from the hardware. Returns 0 on
4986  * success.
4987  **/
4988 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
4989 			 u8 *hfunc)
4990 {
4991 	struct i40e_netdev_priv *np = netdev_priv(netdev);
4992 	struct i40e_vsi *vsi = np->vsi;
4993 	u8 *lut, *seed = NULL;
4994 	int ret;
4995 	u16 i;
4996 
4997 	if (hfunc)
4998 		*hfunc = ETH_RSS_HASH_TOP;
4999 
5000 	if (!indir)
5001 		return 0;
5002 
5003 	seed = key;
5004 	lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5005 	if (!lut)
5006 		return -ENOMEM;
5007 	ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
5008 	if (ret)
5009 		goto out;
5010 	for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5011 		indir[i] = (u32)(lut[i]);
5012 
5013 out:
5014 	kfree(lut);
5015 
5016 	return ret;
5017 }
5018 
5019 /**
5020  * i40e_set_rxfh - set the rx flow hash indirection table
5021  * @netdev: network interface device structure
5022  * @indir: indirection table
5023  * @key: hash key
5024  * @hfunc: hash function to use
5025  *
5026  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
5027  * returns 0 after programming the table.
5028  **/
5029 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
5030 			 const u8 *key, const u8 hfunc)
5031 {
5032 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5033 	struct i40e_vsi *vsi = np->vsi;
5034 	struct i40e_pf *pf = vsi->back;
5035 	u8 *seed = NULL;
5036 	u16 i;
5037 
5038 	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
5039 		return -EOPNOTSUPP;
5040 
5041 	if (key) {
5042 		if (!vsi->rss_hkey_user) {
5043 			vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
5044 						     GFP_KERNEL);
5045 			if (!vsi->rss_hkey_user)
5046 				return -ENOMEM;
5047 		}
5048 		memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
5049 		seed = vsi->rss_hkey_user;
5050 	}
5051 	if (!vsi->rss_lut_user) {
5052 		vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5053 		if (!vsi->rss_lut_user)
5054 			return -ENOMEM;
5055 	}
5056 
5057 	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
5058 	if (indir)
5059 		for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5060 			vsi->rss_lut_user[i] = (u8)(indir[i]);
5061 	else
5062 		i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
5063 				  vsi->rss_size);
5064 
5065 	return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
5066 			       I40E_HLUT_ARRAY_SIZE);
5067 }
5068 
5069 /**
5070  * i40e_get_priv_flags - report device private flags
5071  * @dev: network interface device structure
5072  *
5073  * The get string set count and the string set should be matched for each
5074  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
5075  * array.
5076  *
5077  * Returns a u32 bitmap of flags.
5078  **/
5079 static u32 i40e_get_priv_flags(struct net_device *dev)
5080 {
5081 	struct i40e_netdev_priv *np = netdev_priv(dev);
5082 	struct i40e_vsi *vsi = np->vsi;
5083 	struct i40e_pf *pf = vsi->back;
5084 	u32 i, j, ret_flags = 0;
5085 
5086 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5087 		const struct i40e_priv_flags *priv_flags;
5088 
5089 		priv_flags = &i40e_gstrings_priv_flags[i];
5090 
5091 		if (priv_flags->flag & pf->flags)
5092 			ret_flags |= BIT(i);
5093 	}
5094 
5095 	if (pf->hw.pf_id != 0)
5096 		return ret_flags;
5097 
5098 	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5099 		const struct i40e_priv_flags *priv_flags;
5100 
5101 		priv_flags = &i40e_gl_gstrings_priv_flags[j];
5102 
5103 		if (priv_flags->flag & pf->flags)
5104 			ret_flags |= BIT(i + j);
5105 	}
5106 
5107 	return ret_flags;
5108 }
5109 
5110 /**
5111  * i40e_set_priv_flags - set private flags
5112  * @dev: network interface device structure
5113  * @flags: bit flags to be set
5114  **/
5115 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
5116 {
5117 	struct i40e_netdev_priv *np = netdev_priv(dev);
5118 	u64 orig_flags, new_flags, changed_flags;
5119 	enum i40e_admin_queue_err adq_err;
5120 	struct i40e_vsi *vsi = np->vsi;
5121 	struct i40e_pf *pf = vsi->back;
5122 	u32 reset_needed = 0;
5123 	i40e_status status;
5124 	u32 i, j;
5125 
5126 	orig_flags = READ_ONCE(pf->flags);
5127 	new_flags = orig_flags;
5128 
5129 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5130 		const struct i40e_priv_flags *priv_flags;
5131 
5132 		priv_flags = &i40e_gstrings_priv_flags[i];
5133 
5134 		if (flags & BIT(i))
5135 			new_flags |= priv_flags->flag;
5136 		else
5137 			new_flags &= ~(priv_flags->flag);
5138 
5139 		/* If this is a read-only flag, it can't be changed */
5140 		if (priv_flags->read_only &&
5141 		    ((orig_flags ^ new_flags) & ~BIT(i)))
5142 			return -EOPNOTSUPP;
5143 	}
5144 
5145 	if (pf->hw.pf_id != 0)
5146 		goto flags_complete;
5147 
5148 	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5149 		const struct i40e_priv_flags *priv_flags;
5150 
5151 		priv_flags = &i40e_gl_gstrings_priv_flags[j];
5152 
5153 		if (flags & BIT(i + j))
5154 			new_flags |= priv_flags->flag;
5155 		else
5156 			new_flags &= ~(priv_flags->flag);
5157 
5158 		/* If this is a read-only flag, it can't be changed */
5159 		if (priv_flags->read_only &&
5160 		    ((orig_flags ^ new_flags) & ~BIT(i)))
5161 			return -EOPNOTSUPP;
5162 	}
5163 
5164 flags_complete:
5165 	changed_flags = orig_flags ^ new_flags;
5166 
5167 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
5168 		reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
5169 	if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
5170 	    I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
5171 		reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
5172 
5173 	/* Before we finalize any flag changes, we need to perform some
5174 	 * checks to ensure that the changes are supported and safe.
5175 	 */
5176 
5177 	/* ATR eviction is not supported on all devices */
5178 	if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
5179 	    !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
5180 		return -EOPNOTSUPP;
5181 
5182 	/* If the driver detected FW LLDP was disabled on init, this flag could
5183 	 * be set, however we do not support _changing_ the flag:
5184 	 * - on XL710 if NPAR is enabled or FW API version < 1.7
5185 	 * - on X722 with FW API version < 1.6
5186 	 * There are situations where older FW versions/NPAR enabled PFs could
5187 	 * disable LLDP, however we _must_ not allow the user to enable/disable
5188 	 * LLDP with this flag on unsupported FW versions.
5189 	 */
5190 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5191 		if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
5192 			dev_warn(&pf->pdev->dev,
5193 				 "Device does not support changing FW LLDP\n");
5194 			return -EOPNOTSUPP;
5195 		}
5196 	}
5197 
5198 	if (changed_flags & I40E_FLAG_RS_FEC &&
5199 	    pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5200 	    pf->hw.device_id != I40E_DEV_ID_25G_B) {
5201 		dev_warn(&pf->pdev->dev,
5202 			 "Device does not support changing FEC configuration\n");
5203 		return -EOPNOTSUPP;
5204 	}
5205 
5206 	if (changed_flags & I40E_FLAG_BASE_R_FEC &&
5207 	    pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5208 	    pf->hw.device_id != I40E_DEV_ID_25G_B &&
5209 	    pf->hw.device_id != I40E_DEV_ID_KX_X722) {
5210 		dev_warn(&pf->pdev->dev,
5211 			 "Device does not support changing FEC configuration\n");
5212 		return -EOPNOTSUPP;
5213 	}
5214 
5215 	/* Process any additional changes needed as a result of flag changes.
5216 	 * The changed_flags value reflects the list of bits that were
5217 	 * changed in the code above.
5218 	 */
5219 
5220 	/* Flush current ATR settings if ATR was disabled */
5221 	if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5222 	    !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5223 		set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
5224 		set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
5225 	}
5226 
5227 	if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
5228 		u16 sw_flags = 0, valid_flags = 0;
5229 		int ret;
5230 
5231 		if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
5232 			sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5233 		valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5234 		ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
5235 						0, NULL);
5236 		if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
5237 			dev_info(&pf->pdev->dev,
5238 				 "couldn't set switch config bits, err %s aq_err %s\n",
5239 				 i40e_stat_str(&pf->hw, ret),
5240 				 i40e_aq_str(&pf->hw,
5241 					     pf->hw.aq.asq_last_status));
5242 			/* not a fatal problem, just keep going */
5243 		}
5244 	}
5245 
5246 	if ((changed_flags & I40E_FLAG_RS_FEC) ||
5247 	    (changed_flags & I40E_FLAG_BASE_R_FEC)) {
5248 		u8 fec_cfg = 0;
5249 
5250 		if (new_flags & I40E_FLAG_RS_FEC &&
5251 		    new_flags & I40E_FLAG_BASE_R_FEC) {
5252 			fec_cfg = I40E_AQ_SET_FEC_AUTO;
5253 		} else if (new_flags & I40E_FLAG_RS_FEC) {
5254 			fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
5255 				   I40E_AQ_SET_FEC_ABILITY_RS);
5256 		} else if (new_flags & I40E_FLAG_BASE_R_FEC) {
5257 			fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
5258 				   I40E_AQ_SET_FEC_ABILITY_KR);
5259 		}
5260 		if (i40e_set_fec_cfg(dev, fec_cfg))
5261 			dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
5262 	}
5263 
5264 	if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5265 	    (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
5266 		dev_err(&pf->pdev->dev,
5267 			"Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
5268 		return -EOPNOTSUPP;
5269 	}
5270 
5271 	if ((changed_flags & new_flags &
5272 	     I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5273 	    (new_flags & I40E_FLAG_MFP_ENABLED))
5274 		dev_warn(&pf->pdev->dev,
5275 			 "Turning on link-down-on-close flag may affect other partitions\n");
5276 
5277 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5278 		if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5279 #ifdef CONFIG_I40E_DCB
5280 			i40e_dcb_sw_default_config(pf);
5281 #endif /* CONFIG_I40E_DCB */
5282 			i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
5283 			i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
5284 		} else {
5285 			status = i40e_aq_start_lldp(&pf->hw, false, NULL);
5286 			if (status) {
5287 				adq_err = pf->hw.aq.asq_last_status;
5288 				switch (adq_err) {
5289 				case I40E_AQ_RC_EEXIST:
5290 					dev_warn(&pf->pdev->dev,
5291 						 "FW LLDP agent is already running\n");
5292 					reset_needed = 0;
5293 					break;
5294 				case I40E_AQ_RC_EPERM:
5295 					dev_warn(&pf->pdev->dev,
5296 						 "Device configuration forbids SW from starting the LLDP agent.\n");
5297 					return -EINVAL;
5298 				default:
5299 					dev_warn(&pf->pdev->dev,
5300 						 "Starting FW LLDP agent failed: error: %s, %s\n",
5301 						 i40e_stat_str(&pf->hw,
5302 							       status),
5303 						 i40e_aq_str(&pf->hw,
5304 							     adq_err));
5305 					return -EINVAL;
5306 				}
5307 			}
5308 		}
5309 	}
5310 
5311 	/* Now that we've checked to ensure that the new flags are valid, load
5312 	 * them into place. Since we only modify flags either (a) during
5313 	 * initialization or (b) while holding the RTNL lock, we don't need
5314 	 * anything fancy here.
5315 	 */
5316 	pf->flags = new_flags;
5317 
5318 	/* Issue reset to cause things to take effect, as additional bits
5319 	 * are added we will need to create a mask of bits requiring reset
5320 	 */
5321 	if (reset_needed)
5322 		i40e_do_reset(pf, reset_needed, true);
5323 
5324 	return 0;
5325 }
5326 
5327 /**
5328  * i40e_get_module_info - get (Q)SFP+ module type info
5329  * @netdev: network interface device structure
5330  * @modinfo: module EEPROM size and layout information structure
5331  **/
5332 static int i40e_get_module_info(struct net_device *netdev,
5333 				struct ethtool_modinfo *modinfo)
5334 {
5335 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5336 	struct i40e_vsi *vsi = np->vsi;
5337 	struct i40e_pf *pf = vsi->back;
5338 	struct i40e_hw *hw = &pf->hw;
5339 	u32 sff8472_comp = 0;
5340 	u32 sff8472_swap = 0;
5341 	u32 sff8636_rev = 0;
5342 	i40e_status status;
5343 	u32 type = 0;
5344 
5345 	/* Check if firmware supports reading module EEPROM. */
5346 	if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5347 		netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
5348 		return -EINVAL;
5349 	}
5350 
5351 	status = i40e_update_link_info(hw);
5352 	if (status)
5353 		return -EIO;
5354 
5355 	if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5356 		netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
5357 		return -EINVAL;
5358 	}
5359 
5360 	type = hw->phy.link_info.module_type[0];
5361 
5362 	switch (type) {
5363 	case I40E_MODULE_TYPE_SFP:
5364 		status = i40e_aq_get_phy_register(hw,
5365 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5366 				I40E_I2C_EEPROM_DEV_ADDR, true,
5367 				I40E_MODULE_SFF_8472_COMP,
5368 				&sff8472_comp, NULL);
5369 		if (status)
5370 			return -EIO;
5371 
5372 		status = i40e_aq_get_phy_register(hw,
5373 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5374 				I40E_I2C_EEPROM_DEV_ADDR, true,
5375 				I40E_MODULE_SFF_8472_SWAP,
5376 				&sff8472_swap, NULL);
5377 		if (status)
5378 			return -EIO;
5379 
5380 		/* Check if the module requires address swap to access
5381 		 * the other EEPROM memory page.
5382 		 */
5383 		if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5384 			netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
5385 			modinfo->type = ETH_MODULE_SFF_8079;
5386 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5387 		} else if (sff8472_comp == 0x00) {
5388 			/* Module is not SFF-8472 compliant */
5389 			modinfo->type = ETH_MODULE_SFF_8079;
5390 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5391 		} else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
5392 			/* Module is SFF-8472 compliant but doesn't implement
5393 			 * Digital Diagnostic Monitoring (DDM).
5394 			 */
5395 			modinfo->type = ETH_MODULE_SFF_8079;
5396 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5397 		} else {
5398 			modinfo->type = ETH_MODULE_SFF_8472;
5399 			modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5400 		}
5401 		break;
5402 	case I40E_MODULE_TYPE_QSFP_PLUS:
5403 		/* Read from memory page 0. */
5404 		status = i40e_aq_get_phy_register(hw,
5405 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5406 				0, true,
5407 				I40E_MODULE_REVISION_ADDR,
5408 				&sff8636_rev, NULL);
5409 		if (status)
5410 			return -EIO;
5411 		/* Determine revision compliance byte */
5412 		if (sff8636_rev > 0x02) {
5413 			/* Module is SFF-8636 compliant */
5414 			modinfo->type = ETH_MODULE_SFF_8636;
5415 			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5416 		} else {
5417 			modinfo->type = ETH_MODULE_SFF_8436;
5418 			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5419 		}
5420 		break;
5421 	case I40E_MODULE_TYPE_QSFP28:
5422 		modinfo->type = ETH_MODULE_SFF_8636;
5423 		modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5424 		break;
5425 	default:
5426 		netdev_err(vsi->netdev, "Module type unrecognized\n");
5427 		return -EINVAL;
5428 	}
5429 	return 0;
5430 }
5431 
5432 /**
5433  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5434  * @netdev: network interface device structure
5435  * @ee: EEPROM dump request structure
5436  * @data: buffer to be filled with EEPROM contents
5437  **/
5438 static int i40e_get_module_eeprom(struct net_device *netdev,
5439 				  struct ethtool_eeprom *ee,
5440 				  u8 *data)
5441 {
5442 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5443 	struct i40e_vsi *vsi = np->vsi;
5444 	struct i40e_pf *pf = vsi->back;
5445 	struct i40e_hw *hw = &pf->hw;
5446 	bool is_sfp = false;
5447 	i40e_status status;
5448 	u32 value = 0;
5449 	int i;
5450 
5451 	if (!ee || !ee->len || !data)
5452 		return -EINVAL;
5453 
5454 	if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5455 		is_sfp = true;
5456 
5457 	for (i = 0; i < ee->len; i++) {
5458 		u32 offset = i + ee->offset;
5459 		u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5460 
5461 		/* Check if we need to access the other memory page */
5462 		if (is_sfp) {
5463 			if (offset >= ETH_MODULE_SFF_8079_LEN) {
5464 				offset -= ETH_MODULE_SFF_8079_LEN;
5465 				addr = I40E_I2C_EEPROM_DEV_ADDR2;
5466 			}
5467 		} else {
5468 			while (offset >= ETH_MODULE_SFF_8436_LEN) {
5469 				/* Compute memory page number and offset. */
5470 				offset -= ETH_MODULE_SFF_8436_LEN / 2;
5471 				addr++;
5472 			}
5473 		}
5474 
5475 		status = i40e_aq_get_phy_register(hw,
5476 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5477 				addr, true, offset, &value, NULL);
5478 		if (status)
5479 			return -EIO;
5480 		data[i] = value;
5481 	}
5482 	return 0;
5483 }
5484 
5485 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5486 {
5487 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5488 	struct i40e_aq_get_phy_abilities_resp phy_cfg;
5489 	enum i40e_status_code status = 0;
5490 	struct i40e_vsi *vsi = np->vsi;
5491 	struct i40e_pf *pf = vsi->back;
5492 	struct i40e_hw *hw = &pf->hw;
5493 
5494 	/* Get initial PHY capabilities */
5495 	status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
5496 	if (status)
5497 		return -EAGAIN;
5498 
5499 	/* Check whether NIC configuration is compatible with Energy Efficient
5500 	 * Ethernet (EEE) mode.
5501 	 */
5502 	if (phy_cfg.eee_capability == 0)
5503 		return -EOPNOTSUPP;
5504 
5505 	edata->supported = SUPPORTED_Autoneg;
5506 	edata->lp_advertised = edata->supported;
5507 
5508 	/* Get current configuration */
5509 	status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
5510 	if (status)
5511 		return -EAGAIN;
5512 
5513 	edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
5514 	edata->eee_enabled = !!edata->advertised;
5515 	edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
5516 
5517 	edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
5518 
5519 	return 0;
5520 }
5521 
5522 static int i40e_is_eee_param_supported(struct net_device *netdev,
5523 				       struct ethtool_eee *edata)
5524 {
5525 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5526 	struct i40e_vsi *vsi = np->vsi;
5527 	struct i40e_pf *pf = vsi->back;
5528 	struct i40e_ethtool_not_used {
5529 		u32 value;
5530 		const char *name;
5531 	} param[] = {
5532 		{edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
5533 		{edata->tx_lpi_timer, "tx-timer"},
5534 		{edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
5535 	};
5536 	int i;
5537 
5538 	for (i = 0; i < ARRAY_SIZE(param); i++) {
5539 		if (param[i].value) {
5540 			netdev_info(netdev,
5541 				    "EEE setting %s not supported\n",
5542 				    param[i].name);
5543 			return -EOPNOTSUPP;
5544 		}
5545 	}
5546 
5547 	return 0;
5548 }
5549 
5550 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5551 {
5552 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5553 	struct i40e_aq_get_phy_abilities_resp abilities;
5554 	enum i40e_status_code status = I40E_SUCCESS;
5555 	struct i40e_aq_set_phy_config config;
5556 	struct i40e_vsi *vsi = np->vsi;
5557 	struct i40e_pf *pf = vsi->back;
5558 	struct i40e_hw *hw = &pf->hw;
5559 	__le16 eee_capability;
5560 
5561 	/* Deny parameters we don't support */
5562 	if (i40e_is_eee_param_supported(netdev, edata))
5563 		return -EOPNOTSUPP;
5564 
5565 	/* Get initial PHY capabilities */
5566 	status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
5567 					      NULL);
5568 	if (status)
5569 		return -EAGAIN;
5570 
5571 	/* Check whether NIC configuration is compatible with Energy Efficient
5572 	 * Ethernet (EEE) mode.
5573 	 */
5574 	if (abilities.eee_capability == 0)
5575 		return -EOPNOTSUPP;
5576 
5577 	/* Cache initial EEE capability */
5578 	eee_capability = abilities.eee_capability;
5579 
5580 	/* Get current PHY configuration */
5581 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
5582 					      NULL);
5583 	if (status)
5584 		return -EAGAIN;
5585 
5586 	/* Cache current PHY configuration */
5587 	config.phy_type = abilities.phy_type;
5588 	config.phy_type_ext = abilities.phy_type_ext;
5589 	config.link_speed = abilities.link_speed;
5590 	config.abilities = abilities.abilities |
5591 			   I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
5592 	config.eeer = abilities.eeer_val;
5593 	config.low_power_ctrl = abilities.d3_lpan;
5594 	config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
5595 			    I40E_AQ_PHY_FEC_CONFIG_MASK;
5596 
5597 	/* Set desired EEE state */
5598 	if (edata->eee_enabled) {
5599 		config.eee_capability = eee_capability;
5600 		config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5601 	} else {
5602 		config.eee_capability = 0;
5603 		config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5604 	}
5605 
5606 	/* Apply modified PHY configuration */
5607 	status = i40e_aq_set_phy_config(hw, &config, NULL);
5608 	if (status)
5609 		return -EAGAIN;
5610 
5611 	return 0;
5612 }
5613 
5614 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5615 	.get_drvinfo		= i40e_get_drvinfo,
5616 	.set_eeprom		= i40e_set_eeprom,
5617 	.get_eeprom_len		= i40e_get_eeprom_len,
5618 	.get_eeprom		= i40e_get_eeprom,
5619 };
5620 
5621 static const struct ethtool_ops i40e_ethtool_ops = {
5622 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
5623 				     ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
5624 				     ETHTOOL_COALESCE_USE_ADAPTIVE |
5625 				     ETHTOOL_COALESCE_RX_USECS_HIGH |
5626 				     ETHTOOL_COALESCE_TX_USECS_HIGH,
5627 	.get_drvinfo		= i40e_get_drvinfo,
5628 	.get_regs_len		= i40e_get_regs_len,
5629 	.get_regs		= i40e_get_regs,
5630 	.nway_reset		= i40e_nway_reset,
5631 	.get_link		= ethtool_op_get_link,
5632 	.get_wol		= i40e_get_wol,
5633 	.set_wol		= i40e_set_wol,
5634 	.set_eeprom		= i40e_set_eeprom,
5635 	.get_eeprom_len		= i40e_get_eeprom_len,
5636 	.get_eeprom		= i40e_get_eeprom,
5637 	.get_ringparam		= i40e_get_ringparam,
5638 	.set_ringparam		= i40e_set_ringparam,
5639 	.get_pauseparam		= i40e_get_pauseparam,
5640 	.set_pauseparam		= i40e_set_pauseparam,
5641 	.get_msglevel		= i40e_get_msglevel,
5642 	.set_msglevel		= i40e_set_msglevel,
5643 	.get_rxnfc		= i40e_get_rxnfc,
5644 	.set_rxnfc		= i40e_set_rxnfc,
5645 	.self_test		= i40e_diag_test,
5646 	.get_strings		= i40e_get_strings,
5647 	.get_eee		= i40e_get_eee,
5648 	.set_eee		= i40e_set_eee,
5649 	.set_phys_id		= i40e_set_phys_id,
5650 	.get_sset_count		= i40e_get_sset_count,
5651 	.get_ethtool_stats	= i40e_get_ethtool_stats,
5652 	.get_coalesce		= i40e_get_coalesce,
5653 	.set_coalesce		= i40e_set_coalesce,
5654 	.get_rxfh_key_size	= i40e_get_rxfh_key_size,
5655 	.get_rxfh_indir_size	= i40e_get_rxfh_indir_size,
5656 	.get_rxfh		= i40e_get_rxfh,
5657 	.set_rxfh		= i40e_set_rxfh,
5658 	.get_channels		= i40e_get_channels,
5659 	.set_channels		= i40e_set_channels,
5660 	.get_module_info	= i40e_get_module_info,
5661 	.get_module_eeprom	= i40e_get_module_eeprom,
5662 	.get_ts_info		= i40e_get_ts_info,
5663 	.get_priv_flags		= i40e_get_priv_flags,
5664 	.set_priv_flags		= i40e_set_priv_flags,
5665 	.get_per_queue_coalesce	= i40e_get_per_queue_coalesce,
5666 	.set_per_queue_coalesce	= i40e_set_per_queue_coalesce,
5667 	.get_link_ksettings	= i40e_get_link_ksettings,
5668 	.set_link_ksettings	= i40e_set_link_ksettings,
5669 	.get_fecparam = i40e_get_fec_param,
5670 	.set_fecparam = i40e_set_fec_param,
5671 	.flash_device = i40e_ddp_flash,
5672 };
5673 
5674 void i40e_set_ethtool_ops(struct net_device *netdev)
5675 {
5676 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5677 	struct i40e_pf		*pf = np->vsi->back;
5678 
5679 	if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5680 		netdev->ethtool_ops = &i40e_ethtool_ops;
5681 	else
5682 		netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5683 }
5684