1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 /* ethtool support for iavf */
5 #include "iavf.h"
6
7 #include <linux/uaccess.h>
8
9 /* ethtool statistics helpers */
10
11 /**
12 * struct iavf_stats - definition for an ethtool statistic
13 * @stat_string: statistic name to display in ethtool -S output
14 * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
15 * @stat_offset: offsetof() the stat from a base pointer
16 *
17 * This structure defines a statistic to be added to the ethtool stats buffer.
18 * It defines a statistic as offset from a common base pointer. Stats should
19 * be defined in constant arrays using the IAVF_STAT macro, with every element
20 * of the array using the same _type for calculating the sizeof_stat and
21 * stat_offset.
22 *
23 * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
24 * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
25 * the iavf_add_ethtool_stat() helper function.
26 *
27 * The @stat_string is interpreted as a format string, allowing formatted
28 * values to be inserted while looping over multiple structures for a given
29 * statistics array. Thus, every statistic string in an array should have the
30 * same type and number of format specifiers, to be formatted by variadic
31 * arguments to the iavf_add_stat_string() helper function.
32 **/
33 struct iavf_stats {
34 char stat_string[ETH_GSTRING_LEN];
35 int sizeof_stat;
36 int stat_offset;
37 };
38
39 /* Helper macro to define an iavf_stat structure with proper size and type.
40 * Use this when defining constant statistics arrays. Note that @_type expects
41 * only a type name and is used multiple times.
42 */
43 #define IAVF_STAT(_type, _name, _stat) { \
44 .stat_string = _name, \
45 .sizeof_stat = sizeof_field(_type, _stat), \
46 .stat_offset = offsetof(_type, _stat) \
47 }
48
49 /* Helper macro for defining some statistics related to queues */
50 #define IAVF_QUEUE_STAT(_name, _stat) \
51 IAVF_STAT(struct iavf_ring, _name, _stat)
52
53 /* Stats associated with a Tx or Rx ring */
54 static const struct iavf_stats iavf_gstrings_queue_stats[] = {
55 IAVF_QUEUE_STAT("%s-%u.packets", stats.packets),
56 IAVF_QUEUE_STAT("%s-%u.bytes", stats.bytes),
57 };
58
59 /**
60 * iavf_add_one_ethtool_stat - copy the stat into the supplied buffer
61 * @data: location to store the stat value
62 * @pointer: basis for where to copy from
63 * @stat: the stat definition
64 *
65 * Copies the stat data defined by the pointer and stat structure pair into
66 * the memory supplied as data. Used to implement iavf_add_ethtool_stats and
67 * iavf_add_queue_stats. If the pointer is null, data will be zero'd.
68 */
69 static void
iavf_add_one_ethtool_stat(u64 *data, void *pointer, const struct iavf_stats *stat)70 iavf_add_one_ethtool_stat(u64 *data, void *pointer,
71 const struct iavf_stats *stat)
72 {
73 char *p;
74
75 if (!pointer) {
76 /* ensure that the ethtool data buffer is zero'd for any stats
77 * which don't have a valid pointer.
78 */
79 *data = 0;
80 return;
81 }
82
83 p = (char *)pointer + stat->stat_offset;
84 switch (stat->sizeof_stat) {
85 case sizeof(u64):
86 *data = *((u64 *)p);
87 break;
88 case sizeof(u32):
89 *data = *((u32 *)p);
90 break;
91 case sizeof(u16):
92 *data = *((u16 *)p);
93 break;
94 case sizeof(u8):
95 *data = *((u8 *)p);
96 break;
97 default:
98 WARN_ONCE(1, "unexpected stat size for %s",
99 stat->stat_string);
100 *data = 0;
101 }
102 }
103
104 /**
105 * __iavf_add_ethtool_stats - copy stats into the ethtool supplied buffer
106 * @data: ethtool stats buffer
107 * @pointer: location to copy stats from
108 * @stats: array of stats to copy
109 * @size: the size of the stats definition
110 *
111 * Copy the stats defined by the stats array using the pointer as a base into
112 * the data buffer supplied by ethtool. Updates the data pointer to point to
113 * the next empty location for successive calls to __iavf_add_ethtool_stats.
114 * If pointer is null, set the data values to zero and update the pointer to
115 * skip these stats.
116 **/
117 static void
__iavf_add_ethtool_stats(u64 **data, void *pointer, const struct iavf_stats stats[], const unsigned int size)118 __iavf_add_ethtool_stats(u64 **data, void *pointer,
119 const struct iavf_stats stats[],
120 const unsigned int size)
121 {
122 unsigned int i;
123
124 for (i = 0; i < size; i++)
125 iavf_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
126 }
127
128 /**
129 * iavf_add_ethtool_stats - copy stats into ethtool supplied buffer
130 * @data: ethtool stats buffer
131 * @pointer: location where stats are stored
132 * @stats: static const array of stat definitions
133 *
134 * Macro to ease the use of __iavf_add_ethtool_stats by taking a static
135 * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
136 * ensuring that we pass the size associated with the given stats array.
137 *
138 * The parameter @stats is evaluated twice, so parameters with side effects
139 * should be avoided.
140 **/
141 #define iavf_add_ethtool_stats(data, pointer, stats) \
142 __iavf_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
143
144 /**
145 * iavf_add_queue_stats - copy queue statistics into supplied buffer
146 * @data: ethtool stats buffer
147 * @ring: the ring to copy
148 *
149 * Queue statistics must be copied while protected by
150 * u64_stats_fetch_begin, so we can't directly use iavf_add_ethtool_stats.
151 * Assumes that queue stats are defined in iavf_gstrings_queue_stats. If the
152 * ring pointer is null, zero out the queue stat values and update the data
153 * pointer. Otherwise safely copy the stats from the ring into the supplied
154 * buffer and update the data pointer when finished.
155 *
156 * This function expects to be called while under rcu_read_lock().
157 **/
158 static void
iavf_add_queue_stats(u64 **data, struct iavf_ring *ring)159 iavf_add_queue_stats(u64 **data, struct iavf_ring *ring)
160 {
161 const unsigned int size = ARRAY_SIZE(iavf_gstrings_queue_stats);
162 const struct iavf_stats *stats = iavf_gstrings_queue_stats;
163 unsigned int start;
164 unsigned int i;
165
166 /* To avoid invalid statistics values, ensure that we keep retrying
167 * the copy until we get a consistent value according to
168 * u64_stats_fetch_retry. But first, make sure our ring is
169 * non-null before attempting to access its syncp.
170 */
171 do {
172 start = !ring ? 0 : u64_stats_fetch_begin(&ring->syncp);
173 for (i = 0; i < size; i++)
174 iavf_add_one_ethtool_stat(&(*data)[i], ring, &stats[i]);
175 } while (ring && u64_stats_fetch_retry(&ring->syncp, start));
176
177 /* Once we successfully copy the stats in, update the data pointer */
178 *data += size;
179 }
180
181 /**
182 * __iavf_add_stat_strings - copy stat strings into ethtool buffer
183 * @p: ethtool supplied buffer
184 * @stats: stat definitions array
185 * @size: size of the stats array
186 *
187 * Format and copy the strings described by stats into the buffer pointed at
188 * by p.
189 **/
__iavf_add_stat_strings(u8 **p, const struct iavf_stats stats[], const unsigned int size, ...)190 static void __iavf_add_stat_strings(u8 **p, const struct iavf_stats stats[],
191 const unsigned int size, ...)
192 {
193 unsigned int i;
194
195 for (i = 0; i < size; i++) {
196 va_list args;
197
198 va_start(args, size);
199 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
200 *p += ETH_GSTRING_LEN;
201 va_end(args);
202 }
203 }
204
205 /**
206 * iavf_add_stat_strings - copy stat strings into ethtool buffer
207 * @p: ethtool supplied buffer
208 * @stats: stat definitions array
209 *
210 * Format and copy the strings described by the const static stats value into
211 * the buffer pointed at by p.
212 *
213 * The parameter @stats is evaluated twice, so parameters with side effects
214 * should be avoided. Additionally, stats must be an array such that
215 * ARRAY_SIZE can be called on it.
216 **/
217 #define iavf_add_stat_strings(p, stats, ...) \
218 __iavf_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
219
220 #define VF_STAT(_name, _stat) \
221 IAVF_STAT(struct iavf_adapter, _name, _stat)
222
223 static const struct iavf_stats iavf_gstrings_stats[] = {
224 VF_STAT("rx_bytes", current_stats.rx_bytes),
225 VF_STAT("rx_unicast", current_stats.rx_unicast),
226 VF_STAT("rx_multicast", current_stats.rx_multicast),
227 VF_STAT("rx_broadcast", current_stats.rx_broadcast),
228 VF_STAT("rx_discards", current_stats.rx_discards),
229 VF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
230 VF_STAT("tx_bytes", current_stats.tx_bytes),
231 VF_STAT("tx_unicast", current_stats.tx_unicast),
232 VF_STAT("tx_multicast", current_stats.tx_multicast),
233 VF_STAT("tx_broadcast", current_stats.tx_broadcast),
234 VF_STAT("tx_discards", current_stats.tx_discards),
235 VF_STAT("tx_errors", current_stats.tx_errors),
236 };
237
238 #define IAVF_STATS_LEN ARRAY_SIZE(iavf_gstrings_stats)
239
240 #define IAVF_QUEUE_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats)
241
242 /* For now we have one and only one private flag and it is only defined
243 * when we have support for the SKIP_CPU_SYNC DMA attribute. Instead
244 * of leaving all this code sitting around empty we will strip it unless
245 * our one private flag is actually available.
246 */
247 struct iavf_priv_flags {
248 char flag_string[ETH_GSTRING_LEN];
249 u32 flag;
250 bool read_only;
251 };
252
253 #define IAVF_PRIV_FLAG(_name, _flag, _read_only) { \
254 .flag_string = _name, \
255 .flag = _flag, \
256 .read_only = _read_only, \
257 }
258
259 static const struct iavf_priv_flags iavf_gstrings_priv_flags[] = {
260 IAVF_PRIV_FLAG("legacy-rx", IAVF_FLAG_LEGACY_RX, 0),
261 };
262
263 #define IAVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(iavf_gstrings_priv_flags)
264
265 /**
266 * iavf_get_link_ksettings - Get Link Speed and Duplex settings
267 * @netdev: network interface device structure
268 * @cmd: ethtool command
269 *
270 * Reports speed/duplex settings. Because this is a VF, we don't know what
271 * kind of link we really have, so we fake it.
272 **/
iavf_get_link_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd)273 static int iavf_get_link_ksettings(struct net_device *netdev,
274 struct ethtool_link_ksettings *cmd)
275 {
276 struct iavf_adapter *adapter = netdev_priv(netdev);
277
278 ethtool_link_ksettings_zero_link_mode(cmd, supported);
279 cmd->base.autoneg = AUTONEG_DISABLE;
280 cmd->base.port = PORT_NONE;
281 cmd->base.duplex = DUPLEX_FULL;
282
283 if (ADV_LINK_SUPPORT(adapter)) {
284 if (adapter->link_speed_mbps &&
285 adapter->link_speed_mbps < U32_MAX)
286 cmd->base.speed = adapter->link_speed_mbps;
287 else
288 cmd->base.speed = SPEED_UNKNOWN;
289
290 return 0;
291 }
292
293 switch (adapter->link_speed) {
294 case VIRTCHNL_LINK_SPEED_40GB:
295 cmd->base.speed = SPEED_40000;
296 break;
297 case VIRTCHNL_LINK_SPEED_25GB:
298 cmd->base.speed = SPEED_25000;
299 break;
300 case VIRTCHNL_LINK_SPEED_20GB:
301 cmd->base.speed = SPEED_20000;
302 break;
303 case VIRTCHNL_LINK_SPEED_10GB:
304 cmd->base.speed = SPEED_10000;
305 break;
306 case VIRTCHNL_LINK_SPEED_5GB:
307 cmd->base.speed = SPEED_5000;
308 break;
309 case VIRTCHNL_LINK_SPEED_2_5GB:
310 cmd->base.speed = SPEED_2500;
311 break;
312 case VIRTCHNL_LINK_SPEED_1GB:
313 cmd->base.speed = SPEED_1000;
314 break;
315 case VIRTCHNL_LINK_SPEED_100MB:
316 cmd->base.speed = SPEED_100;
317 break;
318 default:
319 break;
320 }
321
322 return 0;
323 }
324
325 /**
326 * iavf_get_sset_count - Get length of string set
327 * @netdev: network interface device structure
328 * @sset: id of string set
329 *
330 * Reports size of various string tables.
331 **/
iavf_get_sset_count(struct net_device *netdev, int sset)332 static int iavf_get_sset_count(struct net_device *netdev, int sset)
333 {
334 /* Report the maximum number queues, even if not every queue is
335 * currently configured. Since allocation of queues is in pairs,
336 * use netdev->real_num_tx_queues * 2. The real_num_tx_queues is set
337 * at device creation and never changes.
338 */
339
340 if (sset == ETH_SS_STATS)
341 return IAVF_STATS_LEN +
342 (IAVF_QUEUE_STATS_LEN * 2 *
343 netdev->real_num_tx_queues);
344 else if (sset == ETH_SS_PRIV_FLAGS)
345 return IAVF_PRIV_FLAGS_STR_LEN;
346 else
347 return -EINVAL;
348 }
349
350 /**
351 * iavf_get_ethtool_stats - report device statistics
352 * @netdev: network interface device structure
353 * @stats: ethtool statistics structure
354 * @data: pointer to data buffer
355 *
356 * All statistics are added to the data buffer as an array of u64.
357 **/
iavf_get_ethtool_stats(struct net_device *netdev, struct ethtool_stats *stats, u64 *data)358 static void iavf_get_ethtool_stats(struct net_device *netdev,
359 struct ethtool_stats *stats, u64 *data)
360 {
361 struct iavf_adapter *adapter = netdev_priv(netdev);
362 unsigned int i;
363
364 /* Explicitly request stats refresh */
365 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_REQUEST_STATS);
366
367 iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats);
368
369 rcu_read_lock();
370 /* As num_active_queues describe both tx and rx queues, we can use
371 * it to iterate over rings' stats.
372 */
373 for (i = 0; i < adapter->num_active_queues; i++) {
374 struct iavf_ring *ring;
375
376 /* Tx rings stats */
377 ring = &adapter->tx_rings[i];
378 iavf_add_queue_stats(&data, ring);
379
380 /* Rx rings stats */
381 ring = &adapter->rx_rings[i];
382 iavf_add_queue_stats(&data, ring);
383 }
384 rcu_read_unlock();
385 }
386
387 /**
388 * iavf_get_priv_flag_strings - Get private flag strings
389 * @netdev: network interface device structure
390 * @data: buffer for string data
391 *
392 * Builds the private flags string table
393 **/
iavf_get_priv_flag_strings(struct net_device *netdev, u8 *data)394 static void iavf_get_priv_flag_strings(struct net_device *netdev, u8 *data)
395 {
396 unsigned int i;
397
398 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
399 snprintf(data, ETH_GSTRING_LEN, "%s",
400 iavf_gstrings_priv_flags[i].flag_string);
401 data += ETH_GSTRING_LEN;
402 }
403 }
404
405 /**
406 * iavf_get_stat_strings - Get stat strings
407 * @netdev: network interface device structure
408 * @data: buffer for string data
409 *
410 * Builds the statistics string table
411 **/
iavf_get_stat_strings(struct net_device *netdev, u8 *data)412 static void iavf_get_stat_strings(struct net_device *netdev, u8 *data)
413 {
414 unsigned int i;
415
416 iavf_add_stat_strings(&data, iavf_gstrings_stats);
417
418 /* Queues are always allocated in pairs, so we just use
419 * real_num_tx_queues for both Tx and Rx queues.
420 */
421 for (i = 0; i < netdev->real_num_tx_queues; i++) {
422 iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
423 "tx", i);
424 iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
425 "rx", i);
426 }
427 }
428
429 /**
430 * iavf_get_strings - Get string set
431 * @netdev: network interface device structure
432 * @sset: id of string set
433 * @data: buffer for string data
434 *
435 * Builds string tables for various string sets
436 **/
iavf_get_strings(struct net_device *netdev, u32 sset, u8 *data)437 static void iavf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
438 {
439 switch (sset) {
440 case ETH_SS_STATS:
441 iavf_get_stat_strings(netdev, data);
442 break;
443 case ETH_SS_PRIV_FLAGS:
444 iavf_get_priv_flag_strings(netdev, data);
445 break;
446 default:
447 break;
448 }
449 }
450
451 /**
452 * iavf_get_priv_flags - report device private flags
453 * @netdev: network interface device structure
454 *
455 * The get string set count and the string set should be matched for each
456 * flag returned. Add new strings for each flag to the iavf_gstrings_priv_flags
457 * array.
458 *
459 * Returns a u32 bitmap of flags.
460 **/
iavf_get_priv_flags(struct net_device *netdev)461 static u32 iavf_get_priv_flags(struct net_device *netdev)
462 {
463 struct iavf_adapter *adapter = netdev_priv(netdev);
464 u32 i, ret_flags = 0;
465
466 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
467 const struct iavf_priv_flags *priv_flags;
468
469 priv_flags = &iavf_gstrings_priv_flags[i];
470
471 if (priv_flags->flag & adapter->flags)
472 ret_flags |= BIT(i);
473 }
474
475 return ret_flags;
476 }
477
478 /**
479 * iavf_set_priv_flags - set private flags
480 * @netdev: network interface device structure
481 * @flags: bit flags to be set
482 **/
iavf_set_priv_flags(struct net_device *netdev, u32 flags)483 static int iavf_set_priv_flags(struct net_device *netdev, u32 flags)
484 {
485 struct iavf_adapter *adapter = netdev_priv(netdev);
486 u32 orig_flags, new_flags, changed_flags;
487 int ret = 0;
488 u32 i;
489
490 orig_flags = READ_ONCE(adapter->flags);
491 new_flags = orig_flags;
492
493 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
494 const struct iavf_priv_flags *priv_flags;
495
496 priv_flags = &iavf_gstrings_priv_flags[i];
497
498 if (flags & BIT(i))
499 new_flags |= priv_flags->flag;
500 else
501 new_flags &= ~(priv_flags->flag);
502
503 if (priv_flags->read_only &&
504 ((orig_flags ^ new_flags) & ~BIT(i)))
505 return -EOPNOTSUPP;
506 }
507
508 /* Before we finalize any flag changes, any checks which we need to
509 * perform to determine if the new flags will be supported should go
510 * here...
511 */
512
513 /* Compare and exchange the new flags into place. If we failed, that
514 * is if cmpxchg returns anything but the old value, this means
515 * something else must have modified the flags variable since we
516 * copied it. We'll just punt with an error and log something in the
517 * message buffer.
518 */
519 if (cmpxchg(&adapter->flags, orig_flags, new_flags) != orig_flags) {
520 dev_warn(&adapter->pdev->dev,
521 "Unable to update adapter->flags as it was modified by another thread...\n");
522 return -EAGAIN;
523 }
524
525 changed_flags = orig_flags ^ new_flags;
526
527 /* Process any additional changes needed as a result of flag changes.
528 * The changed_flags value reflects the list of bits that were changed
529 * in the code above.
530 */
531
532 /* issue a reset to force legacy-rx change to take effect */
533 if (changed_flags & IAVF_FLAG_LEGACY_RX) {
534 if (netif_running(netdev)) {
535 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
536 ret = iavf_wait_for_reset(adapter);
537 if (ret)
538 netdev_warn(netdev, "Changing private flags timeout or interrupted waiting for reset");
539 }
540 }
541
542 return ret;
543 }
544
545 /**
546 * iavf_get_msglevel - Get debug message level
547 * @netdev: network interface device structure
548 *
549 * Returns current debug message level.
550 **/
iavf_get_msglevel(struct net_device *netdev)551 static u32 iavf_get_msglevel(struct net_device *netdev)
552 {
553 struct iavf_adapter *adapter = netdev_priv(netdev);
554
555 return adapter->msg_enable;
556 }
557
558 /**
559 * iavf_set_msglevel - Set debug message level
560 * @netdev: network interface device structure
561 * @data: message level
562 *
563 * Set current debug message level. Higher values cause the driver to
564 * be noisier.
565 **/
iavf_set_msglevel(struct net_device *netdev, u32 data)566 static void iavf_set_msglevel(struct net_device *netdev, u32 data)
567 {
568 struct iavf_adapter *adapter = netdev_priv(netdev);
569
570 if (IAVF_DEBUG_USER & data)
571 adapter->hw.debug_mask = data;
572 adapter->msg_enable = data;
573 }
574
575 /**
576 * iavf_get_drvinfo - Get driver info
577 * @netdev: network interface device structure
578 * @drvinfo: ethool driver info structure
579 *
580 * Returns information about the driver and device for display to the user.
581 **/
iavf_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)582 static void iavf_get_drvinfo(struct net_device *netdev,
583 struct ethtool_drvinfo *drvinfo)
584 {
585 struct iavf_adapter *adapter = netdev_priv(netdev);
586
587 strscpy(drvinfo->driver, iavf_driver_name, 32);
588 strscpy(drvinfo->fw_version, "N/A", 4);
589 strscpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
590 drvinfo->n_priv_flags = IAVF_PRIV_FLAGS_STR_LEN;
591 }
592
593 /**
594 * iavf_get_ringparam - Get ring parameters
595 * @netdev: network interface device structure
596 * @ring: ethtool ringparam structure
597 * @kernel_ring: ethtool extenal ringparam structure
598 * @extack: netlink extended ACK report struct
599 *
600 * Returns current ring parameters. TX and RX rings are reported separately,
601 * but the number of rings is not reported.
602 **/
iavf_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack)603 static void iavf_get_ringparam(struct net_device *netdev,
604 struct ethtool_ringparam *ring,
605 struct kernel_ethtool_ringparam *kernel_ring,
606 struct netlink_ext_ack *extack)
607 {
608 struct iavf_adapter *adapter = netdev_priv(netdev);
609
610 ring->rx_max_pending = IAVF_MAX_RXD;
611 ring->tx_max_pending = IAVF_MAX_TXD;
612 ring->rx_pending = adapter->rx_desc_count;
613 ring->tx_pending = adapter->tx_desc_count;
614 }
615
616 /**
617 * iavf_set_ringparam - Set ring parameters
618 * @netdev: network interface device structure
619 * @ring: ethtool ringparam structure
620 * @kernel_ring: ethtool external ringparam structure
621 * @extack: netlink extended ACK report struct
622 *
623 * Sets ring parameters. TX and RX rings are controlled separately, but the
624 * number of rings is not specified, so all rings get the same settings.
625 **/
iavf_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack)626 static int iavf_set_ringparam(struct net_device *netdev,
627 struct ethtool_ringparam *ring,
628 struct kernel_ethtool_ringparam *kernel_ring,
629 struct netlink_ext_ack *extack)
630 {
631 struct iavf_adapter *adapter = netdev_priv(netdev);
632 u32 new_rx_count, new_tx_count;
633 int ret = 0;
634
635 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
636 return -EINVAL;
637
638 if (ring->tx_pending > IAVF_MAX_TXD ||
639 ring->tx_pending < IAVF_MIN_TXD ||
640 ring->rx_pending > IAVF_MAX_RXD ||
641 ring->rx_pending < IAVF_MIN_RXD) {
642 netdev_err(netdev, "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d] (increment %d)\n",
643 ring->tx_pending, ring->rx_pending, IAVF_MIN_TXD,
644 IAVF_MAX_RXD, IAVF_REQ_DESCRIPTOR_MULTIPLE);
645 return -EINVAL;
646 }
647
648 new_tx_count = ALIGN(ring->tx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
649 if (new_tx_count != ring->tx_pending)
650 netdev_info(netdev, "Requested Tx descriptor count rounded up to %d\n",
651 new_tx_count);
652
653 new_rx_count = ALIGN(ring->rx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
654 if (new_rx_count != ring->rx_pending)
655 netdev_info(netdev, "Requested Rx descriptor count rounded up to %d\n",
656 new_rx_count);
657
658 /* if nothing to do return success */
659 if ((new_tx_count == adapter->tx_desc_count) &&
660 (new_rx_count == adapter->rx_desc_count)) {
661 netdev_dbg(netdev, "Nothing to change, descriptor count is same as requested\n");
662 return 0;
663 }
664
665 if (new_tx_count != adapter->tx_desc_count) {
666 netdev_dbg(netdev, "Changing Tx descriptor count from %d to %d\n",
667 adapter->tx_desc_count, new_tx_count);
668 adapter->tx_desc_count = new_tx_count;
669 }
670
671 if (new_rx_count != adapter->rx_desc_count) {
672 netdev_dbg(netdev, "Changing Rx descriptor count from %d to %d\n",
673 adapter->rx_desc_count, new_rx_count);
674 adapter->rx_desc_count = new_rx_count;
675 }
676
677 if (netif_running(netdev)) {
678 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
679 ret = iavf_wait_for_reset(adapter);
680 if (ret)
681 netdev_warn(netdev, "Changing ring parameters timeout or interrupted waiting for reset");
682 }
683
684 return ret;
685 }
686
687 /**
688 * __iavf_get_coalesce - get per-queue coalesce settings
689 * @netdev: the netdev to check
690 * @ec: ethtool coalesce data structure
691 * @queue: which queue to pick
692 *
693 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
694 * are per queue. If queue is <0 then we default to queue 0 as the
695 * representative value.
696 **/
__iavf_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, int queue)697 static int __iavf_get_coalesce(struct net_device *netdev,
698 struct ethtool_coalesce *ec, int queue)
699 {
700 struct iavf_adapter *adapter = netdev_priv(netdev);
701 struct iavf_ring *rx_ring, *tx_ring;
702
703 /* Rx and Tx usecs per queue value. If user doesn't specify the
704 * queue, return queue 0's value to represent.
705 */
706 if (queue < 0)
707 queue = 0;
708 else if (queue >= adapter->num_active_queues)
709 return -EINVAL;
710
711 rx_ring = &adapter->rx_rings[queue];
712 tx_ring = &adapter->tx_rings[queue];
713
714 if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
715 ec->use_adaptive_rx_coalesce = 1;
716
717 if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
718 ec->use_adaptive_tx_coalesce = 1;
719
720 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
721 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
722
723 return 0;
724 }
725
726 /**
727 * iavf_get_coalesce - Get interrupt coalescing settings
728 * @netdev: network interface device structure
729 * @ec: ethtool coalesce structure
730 * @kernel_coal: ethtool CQE mode setting structure
731 * @extack: extack for reporting error messages
732 *
733 * Returns current coalescing settings. This is referred to elsewhere in the
734 * driver as Interrupt Throttle Rate, as this is how the hardware describes
735 * this functionality. Note that if per-queue settings have been modified this
736 * only represents the settings of queue 0.
737 **/
iavf_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack)738 static int iavf_get_coalesce(struct net_device *netdev,
739 struct ethtool_coalesce *ec,
740 struct kernel_ethtool_coalesce *kernel_coal,
741 struct netlink_ext_ack *extack)
742 {
743 return __iavf_get_coalesce(netdev, ec, -1);
744 }
745
746 /**
747 * iavf_get_per_queue_coalesce - get coalesce values for specific queue
748 * @netdev: netdev to read
749 * @ec: coalesce settings from ethtool
750 * @queue: the queue to read
751 *
752 * Read specific queue's coalesce settings.
753 **/
iavf_get_per_queue_coalesce(struct net_device *netdev, u32 queue, struct ethtool_coalesce *ec)754 static int iavf_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
755 struct ethtool_coalesce *ec)
756 {
757 return __iavf_get_coalesce(netdev, ec, queue);
758 }
759
760 /**
761 * iavf_set_itr_per_queue - set ITR values for specific queue
762 * @adapter: the VF adapter struct to set values for
763 * @ec: coalesce settings from ethtool
764 * @queue: the queue to modify
765 *
766 * Change the ITR settings for a specific queue.
767 **/
iavf_set_itr_per_queue(struct iavf_adapter *adapter, struct ethtool_coalesce *ec, int queue)768 static int iavf_set_itr_per_queue(struct iavf_adapter *adapter,
769 struct ethtool_coalesce *ec, int queue)
770 {
771 struct iavf_ring *rx_ring = &adapter->rx_rings[queue];
772 struct iavf_ring *tx_ring = &adapter->tx_rings[queue];
773 struct iavf_q_vector *q_vector;
774 u16 itr_setting;
775
776 itr_setting = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
777
778 if (ec->rx_coalesce_usecs != itr_setting &&
779 ec->use_adaptive_rx_coalesce) {
780 netif_info(adapter, drv, adapter->netdev,
781 "Rx interrupt throttling cannot be changed if adaptive-rx is enabled\n");
782 return -EINVAL;
783 }
784
785 itr_setting = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
786
787 if (ec->tx_coalesce_usecs != itr_setting &&
788 ec->use_adaptive_tx_coalesce) {
789 netif_info(adapter, drv, adapter->netdev,
790 "Tx interrupt throttling cannot be changed if adaptive-tx is enabled\n");
791 return -EINVAL;
792 }
793
794 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
795 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
796
797 rx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
798 if (!ec->use_adaptive_rx_coalesce)
799 rx_ring->itr_setting ^= IAVF_ITR_DYNAMIC;
800
801 tx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
802 if (!ec->use_adaptive_tx_coalesce)
803 tx_ring->itr_setting ^= IAVF_ITR_DYNAMIC;
804
805 q_vector = rx_ring->q_vector;
806 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
807
808 q_vector = tx_ring->q_vector;
809 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
810
811 /* The interrupt handler itself will take care of programming
812 * the Tx and Rx ITR values based on the values we have entered
813 * into the q_vector, no need to write the values now.
814 */
815 return 0;
816 }
817
818 /**
819 * __iavf_set_coalesce - set coalesce settings for particular queue
820 * @netdev: the netdev to change
821 * @ec: ethtool coalesce settings
822 * @queue: the queue to change
823 *
824 * Sets the coalesce settings for a particular queue.
825 **/
__iavf_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, int queue)826 static int __iavf_set_coalesce(struct net_device *netdev,
827 struct ethtool_coalesce *ec, int queue)
828 {
829 struct iavf_adapter *adapter = netdev_priv(netdev);
830 int i;
831
832 if (ec->rx_coalesce_usecs > IAVF_MAX_ITR) {
833 netif_info(adapter, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
834 return -EINVAL;
835 } else if (ec->tx_coalesce_usecs > IAVF_MAX_ITR) {
836 netif_info(adapter, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
837 return -EINVAL;
838 }
839
840 /* Rx and Tx usecs has per queue value. If user doesn't specify the
841 * queue, apply to all queues.
842 */
843 if (queue < 0) {
844 for (i = 0; i < adapter->num_active_queues; i++)
845 if (iavf_set_itr_per_queue(adapter, ec, i))
846 return -EINVAL;
847 } else if (queue < adapter->num_active_queues) {
848 if (iavf_set_itr_per_queue(adapter, ec, queue))
849 return -EINVAL;
850 } else {
851 netif_info(adapter, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
852 adapter->num_active_queues - 1);
853 return -EINVAL;
854 }
855
856 return 0;
857 }
858
859 /**
860 * iavf_set_coalesce - Set interrupt coalescing settings
861 * @netdev: network interface device structure
862 * @ec: ethtool coalesce structure
863 * @kernel_coal: ethtool CQE mode setting structure
864 * @extack: extack for reporting error messages
865 *
866 * Change current coalescing settings for every queue.
867 **/
iavf_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack)868 static int iavf_set_coalesce(struct net_device *netdev,
869 struct ethtool_coalesce *ec,
870 struct kernel_ethtool_coalesce *kernel_coal,
871 struct netlink_ext_ack *extack)
872 {
873 return __iavf_set_coalesce(netdev, ec, -1);
874 }
875
876 /**
877 * iavf_set_per_queue_coalesce - set specific queue's coalesce settings
878 * @netdev: the netdev to change
879 * @ec: ethtool's coalesce settings
880 * @queue: the queue to modify
881 *
882 * Modifies a specific queue's coalesce settings.
883 */
iavf_set_per_queue_coalesce(struct net_device *netdev, u32 queue, struct ethtool_coalesce *ec)884 static int iavf_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
885 struct ethtool_coalesce *ec)
886 {
887 return __iavf_set_coalesce(netdev, ec, queue);
888 }
889
890 /**
891 * iavf_fltr_to_ethtool_flow - convert filter type values to ethtool
892 * flow type values
893 * @flow: filter type to be converted
894 *
895 * Returns the corresponding ethtool flow type.
896 */
iavf_fltr_to_ethtool_flow(enum iavf_fdir_flow_type flow)897 static int iavf_fltr_to_ethtool_flow(enum iavf_fdir_flow_type flow)
898 {
899 switch (flow) {
900 case IAVF_FDIR_FLOW_IPV4_TCP:
901 return TCP_V4_FLOW;
902 case IAVF_FDIR_FLOW_IPV4_UDP:
903 return UDP_V4_FLOW;
904 case IAVF_FDIR_FLOW_IPV4_SCTP:
905 return SCTP_V4_FLOW;
906 case IAVF_FDIR_FLOW_IPV4_AH:
907 return AH_V4_FLOW;
908 case IAVF_FDIR_FLOW_IPV4_ESP:
909 return ESP_V4_FLOW;
910 case IAVF_FDIR_FLOW_IPV4_OTHER:
911 return IPV4_USER_FLOW;
912 case IAVF_FDIR_FLOW_IPV6_TCP:
913 return TCP_V6_FLOW;
914 case IAVF_FDIR_FLOW_IPV6_UDP:
915 return UDP_V6_FLOW;
916 case IAVF_FDIR_FLOW_IPV6_SCTP:
917 return SCTP_V6_FLOW;
918 case IAVF_FDIR_FLOW_IPV6_AH:
919 return AH_V6_FLOW;
920 case IAVF_FDIR_FLOW_IPV6_ESP:
921 return ESP_V6_FLOW;
922 case IAVF_FDIR_FLOW_IPV6_OTHER:
923 return IPV6_USER_FLOW;
924 case IAVF_FDIR_FLOW_NON_IP_L2:
925 return ETHER_FLOW;
926 default:
927 /* 0 is undefined ethtool flow */
928 return 0;
929 }
930 }
931
932 /**
933 * iavf_ethtool_flow_to_fltr - convert ethtool flow type to filter enum
934 * @eth: Ethtool flow type to be converted
935 *
936 * Returns flow enum
937 */
iavf_ethtool_flow_to_fltr(int eth)938 static enum iavf_fdir_flow_type iavf_ethtool_flow_to_fltr(int eth)
939 {
940 switch (eth) {
941 case TCP_V4_FLOW:
942 return IAVF_FDIR_FLOW_IPV4_TCP;
943 case UDP_V4_FLOW:
944 return IAVF_FDIR_FLOW_IPV4_UDP;
945 case SCTP_V4_FLOW:
946 return IAVF_FDIR_FLOW_IPV4_SCTP;
947 case AH_V4_FLOW:
948 return IAVF_FDIR_FLOW_IPV4_AH;
949 case ESP_V4_FLOW:
950 return IAVF_FDIR_FLOW_IPV4_ESP;
951 case IPV4_USER_FLOW:
952 return IAVF_FDIR_FLOW_IPV4_OTHER;
953 case TCP_V6_FLOW:
954 return IAVF_FDIR_FLOW_IPV6_TCP;
955 case UDP_V6_FLOW:
956 return IAVF_FDIR_FLOW_IPV6_UDP;
957 case SCTP_V6_FLOW:
958 return IAVF_FDIR_FLOW_IPV6_SCTP;
959 case AH_V6_FLOW:
960 return IAVF_FDIR_FLOW_IPV6_AH;
961 case ESP_V6_FLOW:
962 return IAVF_FDIR_FLOW_IPV6_ESP;
963 case IPV6_USER_FLOW:
964 return IAVF_FDIR_FLOW_IPV6_OTHER;
965 case ETHER_FLOW:
966 return IAVF_FDIR_FLOW_NON_IP_L2;
967 default:
968 return IAVF_FDIR_FLOW_NONE;
969 }
970 }
971
972 /**
973 * iavf_is_mask_valid - check mask field set
974 * @mask: full mask to check
975 * @field: field for which mask should be valid
976 *
977 * If the mask is fully set return true. If it is not valid for field return
978 * false.
979 */
iavf_is_mask_valid(u64 mask, u64 field)980 static bool iavf_is_mask_valid(u64 mask, u64 field)
981 {
982 return (mask & field) == field;
983 }
984
985 /**
986 * iavf_parse_rx_flow_user_data - deconstruct user-defined data
987 * @fsp: pointer to ethtool Rx flow specification
988 * @fltr: pointer to Flow Director filter for userdef data storage
989 *
990 * Returns 0 on success, negative error value on failure
991 */
992 static int
iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, struct iavf_fdir_fltr *fltr)993 iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
994 struct iavf_fdir_fltr *fltr)
995 {
996 struct iavf_flex_word *flex;
997 int i, cnt = 0;
998
999 if (!(fsp->flow_type & FLOW_EXT))
1000 return 0;
1001
1002 for (i = 0; i < IAVF_FLEX_WORD_NUM; i++) {
1003 #define IAVF_USERDEF_FLEX_WORD_M GENMASK(15, 0)
1004 #define IAVF_USERDEF_FLEX_OFFS_S 16
1005 #define IAVF_USERDEF_FLEX_OFFS_M GENMASK(31, IAVF_USERDEF_FLEX_OFFS_S)
1006 #define IAVF_USERDEF_FLEX_FLTR_M GENMASK(31, 0)
1007 u32 value = be32_to_cpu(fsp->h_ext.data[i]);
1008 u32 mask = be32_to_cpu(fsp->m_ext.data[i]);
1009
1010 if (!value || !mask)
1011 continue;
1012
1013 if (!iavf_is_mask_valid(mask, IAVF_USERDEF_FLEX_FLTR_M))
1014 return -EINVAL;
1015
1016 /* 504 is the maximum value for offsets, and offset is measured
1017 * from the start of the MAC address.
1018 */
1019 #define IAVF_USERDEF_FLEX_MAX_OFFS_VAL 504
1020 flex = &fltr->flex_words[cnt++];
1021 flex->word = value & IAVF_USERDEF_FLEX_WORD_M;
1022 flex->offset = (value & IAVF_USERDEF_FLEX_OFFS_M) >>
1023 IAVF_USERDEF_FLEX_OFFS_S;
1024 if (flex->offset > IAVF_USERDEF_FLEX_MAX_OFFS_VAL)
1025 return -EINVAL;
1026 }
1027
1028 fltr->flex_cnt = cnt;
1029
1030 return 0;
1031 }
1032
1033 /**
1034 * iavf_fill_rx_flow_ext_data - fill the additional data
1035 * @fsp: pointer to ethtool Rx flow specification
1036 * @fltr: pointer to Flow Director filter to get additional data
1037 */
1038 static void
iavf_fill_rx_flow_ext_data(struct ethtool_rx_flow_spec *fsp, struct iavf_fdir_fltr *fltr)1039 iavf_fill_rx_flow_ext_data(struct ethtool_rx_flow_spec *fsp,
1040 struct iavf_fdir_fltr *fltr)
1041 {
1042 if (!fltr->ext_mask.usr_def[0] && !fltr->ext_mask.usr_def[1])
1043 return;
1044
1045 fsp->flow_type |= FLOW_EXT;
1046
1047 memcpy(fsp->h_ext.data, fltr->ext_data.usr_def, sizeof(fsp->h_ext.data));
1048 memcpy(fsp->m_ext.data, fltr->ext_mask.usr_def, sizeof(fsp->m_ext.data));
1049 }
1050
1051 /**
1052 * iavf_get_ethtool_fdir_entry - fill ethtool structure with Flow Director filter data
1053 * @adapter: the VF adapter structure that contains filter list
1054 * @cmd: ethtool command data structure to receive the filter data
1055 *
1056 * Returns 0 as expected for success by ethtool
1057 */
1058 static int
iavf_get_ethtool_fdir_entry(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)1059 iavf_get_ethtool_fdir_entry(struct iavf_adapter *adapter,
1060 struct ethtool_rxnfc *cmd)
1061 {
1062 struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1063 struct iavf_fdir_fltr *rule = NULL;
1064 int ret = 0;
1065
1066 if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED))
1067 return -EOPNOTSUPP;
1068
1069 spin_lock_bh(&adapter->fdir_fltr_lock);
1070
1071 rule = iavf_find_fdir_fltr_by_loc(adapter, fsp->location);
1072 if (!rule) {
1073 ret = -EINVAL;
1074 goto release_lock;
1075 }
1076
1077 fsp->flow_type = iavf_fltr_to_ethtool_flow(rule->flow_type);
1078
1079 memset(&fsp->m_u, 0, sizeof(fsp->m_u));
1080 memset(&fsp->m_ext, 0, sizeof(fsp->m_ext));
1081
1082 switch (fsp->flow_type) {
1083 case TCP_V4_FLOW:
1084 case UDP_V4_FLOW:
1085 case SCTP_V4_FLOW:
1086 fsp->h_u.tcp_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1087 fsp->h_u.tcp_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1088 fsp->h_u.tcp_ip4_spec.psrc = rule->ip_data.src_port;
1089 fsp->h_u.tcp_ip4_spec.pdst = rule->ip_data.dst_port;
1090 fsp->h_u.tcp_ip4_spec.tos = rule->ip_data.tos;
1091 fsp->m_u.tcp_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1092 fsp->m_u.tcp_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1093 fsp->m_u.tcp_ip4_spec.psrc = rule->ip_mask.src_port;
1094 fsp->m_u.tcp_ip4_spec.pdst = rule->ip_mask.dst_port;
1095 fsp->m_u.tcp_ip4_spec.tos = rule->ip_mask.tos;
1096 break;
1097 case AH_V4_FLOW:
1098 case ESP_V4_FLOW:
1099 fsp->h_u.ah_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1100 fsp->h_u.ah_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1101 fsp->h_u.ah_ip4_spec.spi = rule->ip_data.spi;
1102 fsp->h_u.ah_ip4_spec.tos = rule->ip_data.tos;
1103 fsp->m_u.ah_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1104 fsp->m_u.ah_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1105 fsp->m_u.ah_ip4_spec.spi = rule->ip_mask.spi;
1106 fsp->m_u.ah_ip4_spec.tos = rule->ip_mask.tos;
1107 break;
1108 case IPV4_USER_FLOW:
1109 fsp->h_u.usr_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1110 fsp->h_u.usr_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1111 fsp->h_u.usr_ip4_spec.l4_4_bytes = rule->ip_data.l4_header;
1112 fsp->h_u.usr_ip4_spec.tos = rule->ip_data.tos;
1113 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
1114 fsp->h_u.usr_ip4_spec.proto = rule->ip_data.proto;
1115 fsp->m_u.usr_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1116 fsp->m_u.usr_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1117 fsp->m_u.usr_ip4_spec.l4_4_bytes = rule->ip_mask.l4_header;
1118 fsp->m_u.usr_ip4_spec.tos = rule->ip_mask.tos;
1119 fsp->m_u.usr_ip4_spec.ip_ver = 0xFF;
1120 fsp->m_u.usr_ip4_spec.proto = rule->ip_mask.proto;
1121 break;
1122 case TCP_V6_FLOW:
1123 case UDP_V6_FLOW:
1124 case SCTP_V6_FLOW:
1125 memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1126 sizeof(struct in6_addr));
1127 memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1128 sizeof(struct in6_addr));
1129 fsp->h_u.tcp_ip6_spec.psrc = rule->ip_data.src_port;
1130 fsp->h_u.tcp_ip6_spec.pdst = rule->ip_data.dst_port;
1131 fsp->h_u.tcp_ip6_spec.tclass = rule->ip_data.tclass;
1132 memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1133 sizeof(struct in6_addr));
1134 memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1135 sizeof(struct in6_addr));
1136 fsp->m_u.tcp_ip6_spec.psrc = rule->ip_mask.src_port;
1137 fsp->m_u.tcp_ip6_spec.pdst = rule->ip_mask.dst_port;
1138 fsp->m_u.tcp_ip6_spec.tclass = rule->ip_mask.tclass;
1139 break;
1140 case AH_V6_FLOW:
1141 case ESP_V6_FLOW:
1142 memcpy(fsp->h_u.ah_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1143 sizeof(struct in6_addr));
1144 memcpy(fsp->h_u.ah_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1145 sizeof(struct in6_addr));
1146 fsp->h_u.ah_ip6_spec.spi = rule->ip_data.spi;
1147 fsp->h_u.ah_ip6_spec.tclass = rule->ip_data.tclass;
1148 memcpy(fsp->m_u.ah_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1149 sizeof(struct in6_addr));
1150 memcpy(fsp->m_u.ah_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1151 sizeof(struct in6_addr));
1152 fsp->m_u.ah_ip6_spec.spi = rule->ip_mask.spi;
1153 fsp->m_u.ah_ip6_spec.tclass = rule->ip_mask.tclass;
1154 break;
1155 case IPV6_USER_FLOW:
1156 memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1157 sizeof(struct in6_addr));
1158 memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1159 sizeof(struct in6_addr));
1160 fsp->h_u.usr_ip6_spec.l4_4_bytes = rule->ip_data.l4_header;
1161 fsp->h_u.usr_ip6_spec.tclass = rule->ip_data.tclass;
1162 fsp->h_u.usr_ip6_spec.l4_proto = rule->ip_data.proto;
1163 memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1164 sizeof(struct in6_addr));
1165 memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1166 sizeof(struct in6_addr));
1167 fsp->m_u.usr_ip6_spec.l4_4_bytes = rule->ip_mask.l4_header;
1168 fsp->m_u.usr_ip6_spec.tclass = rule->ip_mask.tclass;
1169 fsp->m_u.usr_ip6_spec.l4_proto = rule->ip_mask.proto;
1170 break;
1171 case ETHER_FLOW:
1172 fsp->h_u.ether_spec.h_proto = rule->eth_data.etype;
1173 fsp->m_u.ether_spec.h_proto = rule->eth_mask.etype;
1174 break;
1175 default:
1176 ret = -EINVAL;
1177 break;
1178 }
1179
1180 iavf_fill_rx_flow_ext_data(fsp, rule);
1181
1182 if (rule->action == VIRTCHNL_ACTION_DROP)
1183 fsp->ring_cookie = RX_CLS_FLOW_DISC;
1184 else
1185 fsp->ring_cookie = rule->q_index;
1186
1187 release_lock:
1188 spin_unlock_bh(&adapter->fdir_fltr_lock);
1189 return ret;
1190 }
1191
1192 /**
1193 * iavf_get_fdir_fltr_ids - fill buffer with filter IDs of active filters
1194 * @adapter: the VF adapter structure containing the filter list
1195 * @cmd: ethtool command data structure
1196 * @rule_locs: ethtool array passed in from OS to receive filter IDs
1197 *
1198 * Returns 0 as expected for success by ethtool
1199 */
1200 static int
iavf_get_fdir_fltr_ids(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd, u32 *rule_locs)1201 iavf_get_fdir_fltr_ids(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd,
1202 u32 *rule_locs)
1203 {
1204 struct iavf_fdir_fltr *fltr;
1205 unsigned int cnt = 0;
1206 int val = 0;
1207
1208 if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED))
1209 return -EOPNOTSUPP;
1210
1211 cmd->data = IAVF_MAX_FDIR_FILTERS;
1212
1213 spin_lock_bh(&adapter->fdir_fltr_lock);
1214
1215 list_for_each_entry(fltr, &adapter->fdir_list_head, list) {
1216 if (cnt == cmd->rule_cnt) {
1217 val = -EMSGSIZE;
1218 goto release_lock;
1219 }
1220 rule_locs[cnt] = fltr->loc;
1221 cnt++;
1222 }
1223
1224 release_lock:
1225 spin_unlock_bh(&adapter->fdir_fltr_lock);
1226 if (!val)
1227 cmd->rule_cnt = cnt;
1228
1229 return val;
1230 }
1231
1232 /**
1233 * iavf_add_fdir_fltr_info - Set the input set for Flow Director filter
1234 * @adapter: pointer to the VF adapter structure
1235 * @fsp: pointer to ethtool Rx flow specification
1236 * @fltr: filter structure
1237 */
1238 static int
iavf_add_fdir_fltr_info(struct iavf_adapter *adapter, struct ethtool_rx_flow_spec *fsp, struct iavf_fdir_fltr *fltr)1239 iavf_add_fdir_fltr_info(struct iavf_adapter *adapter, struct ethtool_rx_flow_spec *fsp,
1240 struct iavf_fdir_fltr *fltr)
1241 {
1242 u32 flow_type, q_index = 0;
1243 enum virtchnl_action act;
1244 int err;
1245
1246 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
1247 act = VIRTCHNL_ACTION_DROP;
1248 } else {
1249 q_index = fsp->ring_cookie;
1250 if (q_index >= adapter->num_active_queues)
1251 return -EINVAL;
1252
1253 act = VIRTCHNL_ACTION_QUEUE;
1254 }
1255
1256 fltr->action = act;
1257 fltr->loc = fsp->location;
1258 fltr->q_index = q_index;
1259
1260 if (fsp->flow_type & FLOW_EXT) {
1261 memcpy(fltr->ext_data.usr_def, fsp->h_ext.data,
1262 sizeof(fltr->ext_data.usr_def));
1263 memcpy(fltr->ext_mask.usr_def, fsp->m_ext.data,
1264 sizeof(fltr->ext_mask.usr_def));
1265 }
1266
1267 flow_type = fsp->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS);
1268 fltr->flow_type = iavf_ethtool_flow_to_fltr(flow_type);
1269
1270 switch (flow_type) {
1271 case TCP_V4_FLOW:
1272 case UDP_V4_FLOW:
1273 case SCTP_V4_FLOW:
1274 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.tcp_ip4_spec.ip4src;
1275 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
1276 fltr->ip_data.src_port = fsp->h_u.tcp_ip4_spec.psrc;
1277 fltr->ip_data.dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1278 fltr->ip_data.tos = fsp->h_u.tcp_ip4_spec.tos;
1279 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.tcp_ip4_spec.ip4src;
1280 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.tcp_ip4_spec.ip4dst;
1281 fltr->ip_mask.src_port = fsp->m_u.tcp_ip4_spec.psrc;
1282 fltr->ip_mask.dst_port = fsp->m_u.tcp_ip4_spec.pdst;
1283 fltr->ip_mask.tos = fsp->m_u.tcp_ip4_spec.tos;
1284 fltr->ip_ver = 4;
1285 break;
1286 case AH_V4_FLOW:
1287 case ESP_V4_FLOW:
1288 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.ah_ip4_spec.ip4src;
1289 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.ah_ip4_spec.ip4dst;
1290 fltr->ip_data.spi = fsp->h_u.ah_ip4_spec.spi;
1291 fltr->ip_data.tos = fsp->h_u.ah_ip4_spec.tos;
1292 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.ah_ip4_spec.ip4src;
1293 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.ah_ip4_spec.ip4dst;
1294 fltr->ip_mask.spi = fsp->m_u.ah_ip4_spec.spi;
1295 fltr->ip_mask.tos = fsp->m_u.ah_ip4_spec.tos;
1296 fltr->ip_ver = 4;
1297 break;
1298 case IPV4_USER_FLOW:
1299 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.usr_ip4_spec.ip4src;
1300 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.usr_ip4_spec.ip4dst;
1301 fltr->ip_data.l4_header = fsp->h_u.usr_ip4_spec.l4_4_bytes;
1302 fltr->ip_data.tos = fsp->h_u.usr_ip4_spec.tos;
1303 fltr->ip_data.proto = fsp->h_u.usr_ip4_spec.proto;
1304 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.usr_ip4_spec.ip4src;
1305 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.usr_ip4_spec.ip4dst;
1306 fltr->ip_mask.l4_header = fsp->m_u.usr_ip4_spec.l4_4_bytes;
1307 fltr->ip_mask.tos = fsp->m_u.usr_ip4_spec.tos;
1308 fltr->ip_mask.proto = fsp->m_u.usr_ip4_spec.proto;
1309 fltr->ip_ver = 4;
1310 break;
1311 case TCP_V6_FLOW:
1312 case UDP_V6_FLOW:
1313 case SCTP_V6_FLOW:
1314 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1315 sizeof(struct in6_addr));
1316 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1317 sizeof(struct in6_addr));
1318 fltr->ip_data.src_port = fsp->h_u.tcp_ip6_spec.psrc;
1319 fltr->ip_data.dst_port = fsp->h_u.tcp_ip6_spec.pdst;
1320 fltr->ip_data.tclass = fsp->h_u.tcp_ip6_spec.tclass;
1321 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src,
1322 sizeof(struct in6_addr));
1323 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst,
1324 sizeof(struct in6_addr));
1325 fltr->ip_mask.src_port = fsp->m_u.tcp_ip6_spec.psrc;
1326 fltr->ip_mask.dst_port = fsp->m_u.tcp_ip6_spec.pdst;
1327 fltr->ip_mask.tclass = fsp->m_u.tcp_ip6_spec.tclass;
1328 fltr->ip_ver = 6;
1329 break;
1330 case AH_V6_FLOW:
1331 case ESP_V6_FLOW:
1332 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.ah_ip6_spec.ip6src,
1333 sizeof(struct in6_addr));
1334 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.ah_ip6_spec.ip6dst,
1335 sizeof(struct in6_addr));
1336 fltr->ip_data.spi = fsp->h_u.ah_ip6_spec.spi;
1337 fltr->ip_data.tclass = fsp->h_u.ah_ip6_spec.tclass;
1338 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.ah_ip6_spec.ip6src,
1339 sizeof(struct in6_addr));
1340 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.ah_ip6_spec.ip6dst,
1341 sizeof(struct in6_addr));
1342 fltr->ip_mask.spi = fsp->m_u.ah_ip6_spec.spi;
1343 fltr->ip_mask.tclass = fsp->m_u.ah_ip6_spec.tclass;
1344 fltr->ip_ver = 6;
1345 break;
1346 case IPV6_USER_FLOW:
1347 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1348 sizeof(struct in6_addr));
1349 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1350 sizeof(struct in6_addr));
1351 fltr->ip_data.l4_header = fsp->h_u.usr_ip6_spec.l4_4_bytes;
1352 fltr->ip_data.tclass = fsp->h_u.usr_ip6_spec.tclass;
1353 fltr->ip_data.proto = fsp->h_u.usr_ip6_spec.l4_proto;
1354 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src,
1355 sizeof(struct in6_addr));
1356 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst,
1357 sizeof(struct in6_addr));
1358 fltr->ip_mask.l4_header = fsp->m_u.usr_ip6_spec.l4_4_bytes;
1359 fltr->ip_mask.tclass = fsp->m_u.usr_ip6_spec.tclass;
1360 fltr->ip_mask.proto = fsp->m_u.usr_ip6_spec.l4_proto;
1361 fltr->ip_ver = 6;
1362 break;
1363 case ETHER_FLOW:
1364 fltr->eth_data.etype = fsp->h_u.ether_spec.h_proto;
1365 fltr->eth_mask.etype = fsp->m_u.ether_spec.h_proto;
1366 break;
1367 default:
1368 /* not doing un-parsed flow types */
1369 return -EINVAL;
1370 }
1371
1372 err = iavf_validate_fdir_fltr_masks(adapter, fltr);
1373 if (err)
1374 return err;
1375
1376 if (iavf_fdir_is_dup_fltr(adapter, fltr))
1377 return -EEXIST;
1378
1379 err = iavf_parse_rx_flow_user_data(fsp, fltr);
1380 if (err)
1381 return err;
1382
1383 return iavf_fill_fdir_add_msg(adapter, fltr);
1384 }
1385
1386 /**
1387 * iavf_add_fdir_ethtool - add Flow Director filter
1388 * @adapter: pointer to the VF adapter structure
1389 * @cmd: command to add Flow Director filter
1390 *
1391 * Returns 0 on success and negative values for failure
1392 */
iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)1393 static int iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)
1394 {
1395 struct ethtool_rx_flow_spec *fsp = &cmd->fs;
1396 struct iavf_fdir_fltr *fltr;
1397 int count = 50;
1398 int err;
1399
1400 if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED))
1401 return -EOPNOTSUPP;
1402
1403 if (fsp->flow_type & FLOW_MAC_EXT)
1404 return -EINVAL;
1405
1406 spin_lock_bh(&adapter->fdir_fltr_lock);
1407 if (adapter->fdir_active_fltr >= IAVF_MAX_FDIR_FILTERS) {
1408 spin_unlock_bh(&adapter->fdir_fltr_lock);
1409 dev_err(&adapter->pdev->dev,
1410 "Unable to add Flow Director filter because VF reached the limit of max allowed filters (%u)\n",
1411 IAVF_MAX_FDIR_FILTERS);
1412 return -ENOSPC;
1413 }
1414
1415 if (iavf_find_fdir_fltr_by_loc(adapter, fsp->location)) {
1416 dev_err(&adapter->pdev->dev, "Failed to add Flow Director filter, it already exists\n");
1417 spin_unlock_bh(&adapter->fdir_fltr_lock);
1418 return -EEXIST;
1419 }
1420 spin_unlock_bh(&adapter->fdir_fltr_lock);
1421
1422 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL);
1423 if (!fltr)
1424 return -ENOMEM;
1425
1426 while (!mutex_trylock(&adapter->crit_lock)) {
1427 if (--count == 0) {
1428 kfree(fltr);
1429 return -EINVAL;
1430 }
1431 udelay(1);
1432 }
1433
1434 err = iavf_add_fdir_fltr_info(adapter, fsp, fltr);
1435 if (err)
1436 goto ret;
1437
1438 spin_lock_bh(&adapter->fdir_fltr_lock);
1439 iavf_fdir_list_add_fltr(adapter, fltr);
1440 adapter->fdir_active_fltr++;
1441 if (adapter->link_up) {
1442 fltr->state = IAVF_FDIR_FLTR_ADD_REQUEST;
1443 adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
1444 } else {
1445 fltr->state = IAVF_FDIR_FLTR_INACTIVE;
1446 }
1447 spin_unlock_bh(&adapter->fdir_fltr_lock);
1448
1449 if (adapter->link_up)
1450 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1451 ret:
1452 if (err && fltr)
1453 kfree(fltr);
1454
1455 mutex_unlock(&adapter->crit_lock);
1456 return err;
1457 }
1458
1459 /**
1460 * iavf_del_fdir_ethtool - delete Flow Director filter
1461 * @adapter: pointer to the VF adapter structure
1462 * @cmd: command to delete Flow Director filter
1463 *
1464 * Returns 0 on success and negative values for failure
1465 */
iavf_del_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)1466 static int iavf_del_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)
1467 {
1468 struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1469 struct iavf_fdir_fltr *fltr = NULL;
1470 int err = 0;
1471
1472 if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED))
1473 return -EOPNOTSUPP;
1474
1475 spin_lock_bh(&adapter->fdir_fltr_lock);
1476 fltr = iavf_find_fdir_fltr_by_loc(adapter, fsp->location);
1477 if (fltr) {
1478 if (fltr->state == IAVF_FDIR_FLTR_ACTIVE) {
1479 fltr->state = IAVF_FDIR_FLTR_DEL_REQUEST;
1480 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
1481 } else if (fltr->state == IAVF_FDIR_FLTR_INACTIVE) {
1482 list_del(&fltr->list);
1483 kfree(fltr);
1484 adapter->fdir_active_fltr--;
1485 fltr = NULL;
1486 } else {
1487 err = -EBUSY;
1488 }
1489 } else if (adapter->fdir_active_fltr) {
1490 err = -EINVAL;
1491 }
1492 spin_unlock_bh(&adapter->fdir_fltr_lock);
1493
1494 if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST)
1495 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1496
1497 return err;
1498 }
1499
1500 /**
1501 * iavf_adv_rss_parse_hdrs - parses headers from RSS hash input
1502 * @cmd: ethtool rxnfc command
1503 *
1504 * This function parses the rxnfc command and returns intended
1505 * header types for RSS configuration
1506 */
iavf_adv_rss_parse_hdrs(struct ethtool_rxnfc *cmd)1507 static u32 iavf_adv_rss_parse_hdrs(struct ethtool_rxnfc *cmd)
1508 {
1509 u32 hdrs = IAVF_ADV_RSS_FLOW_SEG_HDR_NONE;
1510
1511 switch (cmd->flow_type) {
1512 case TCP_V4_FLOW:
1513 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP |
1514 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1515 break;
1516 case UDP_V4_FLOW:
1517 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP |
1518 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1519 break;
1520 case SCTP_V4_FLOW:
1521 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP |
1522 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1523 break;
1524 case TCP_V6_FLOW:
1525 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP |
1526 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1527 break;
1528 case UDP_V6_FLOW:
1529 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP |
1530 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1531 break;
1532 case SCTP_V6_FLOW:
1533 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP |
1534 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1535 break;
1536 default:
1537 break;
1538 }
1539
1540 return hdrs;
1541 }
1542
1543 /**
1544 * iavf_adv_rss_parse_hash_flds - parses hash fields from RSS hash input
1545 * @cmd: ethtool rxnfc command
1546 *
1547 * This function parses the rxnfc command and returns intended hash fields for
1548 * RSS configuration
1549 */
iavf_adv_rss_parse_hash_flds(struct ethtool_rxnfc *cmd)1550 static u64 iavf_adv_rss_parse_hash_flds(struct ethtool_rxnfc *cmd)
1551 {
1552 u64 hfld = IAVF_ADV_RSS_HASH_INVALID;
1553
1554 if (cmd->data & RXH_IP_SRC || cmd->data & RXH_IP_DST) {
1555 switch (cmd->flow_type) {
1556 case TCP_V4_FLOW:
1557 case UDP_V4_FLOW:
1558 case SCTP_V4_FLOW:
1559 if (cmd->data & RXH_IP_SRC)
1560 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_SA;
1561 if (cmd->data & RXH_IP_DST)
1562 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_DA;
1563 break;
1564 case TCP_V6_FLOW:
1565 case UDP_V6_FLOW:
1566 case SCTP_V6_FLOW:
1567 if (cmd->data & RXH_IP_SRC)
1568 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_SA;
1569 if (cmd->data & RXH_IP_DST)
1570 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_DA;
1571 break;
1572 default:
1573 break;
1574 }
1575 }
1576
1577 if (cmd->data & RXH_L4_B_0_1 || cmd->data & RXH_L4_B_2_3) {
1578 switch (cmd->flow_type) {
1579 case TCP_V4_FLOW:
1580 case TCP_V6_FLOW:
1581 if (cmd->data & RXH_L4_B_0_1)
1582 hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT;
1583 if (cmd->data & RXH_L4_B_2_3)
1584 hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT;
1585 break;
1586 case UDP_V4_FLOW:
1587 case UDP_V6_FLOW:
1588 if (cmd->data & RXH_L4_B_0_1)
1589 hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT;
1590 if (cmd->data & RXH_L4_B_2_3)
1591 hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT;
1592 break;
1593 case SCTP_V4_FLOW:
1594 case SCTP_V6_FLOW:
1595 if (cmd->data & RXH_L4_B_0_1)
1596 hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT;
1597 if (cmd->data & RXH_L4_B_2_3)
1598 hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT;
1599 break;
1600 default:
1601 break;
1602 }
1603 }
1604
1605 return hfld;
1606 }
1607
1608 /**
1609 * iavf_set_adv_rss_hash_opt - Enable/Disable flow types for RSS hash
1610 * @adapter: pointer to the VF adapter structure
1611 * @cmd: ethtool rxnfc command
1612 *
1613 * Returns Success if the flow input set is supported.
1614 */
1615 static int
iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)1616 iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter,
1617 struct ethtool_rxnfc *cmd)
1618 {
1619 struct iavf_adv_rss *rss_old, *rss_new;
1620 bool rss_new_add = false;
1621 int count = 50, err = 0;
1622 u64 hash_flds;
1623 u32 hdrs;
1624
1625 if (!ADV_RSS_SUPPORT(adapter))
1626 return -EOPNOTSUPP;
1627
1628 hdrs = iavf_adv_rss_parse_hdrs(cmd);
1629 if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE)
1630 return -EINVAL;
1631
1632 hash_flds = iavf_adv_rss_parse_hash_flds(cmd);
1633 if (hash_flds == IAVF_ADV_RSS_HASH_INVALID)
1634 return -EINVAL;
1635
1636 rss_new = kzalloc(sizeof(*rss_new), GFP_KERNEL);
1637 if (!rss_new)
1638 return -ENOMEM;
1639
1640 if (iavf_fill_adv_rss_cfg_msg(&rss_new->cfg_msg, hdrs, hash_flds)) {
1641 kfree(rss_new);
1642 return -EINVAL;
1643 }
1644
1645 while (!mutex_trylock(&adapter->crit_lock)) {
1646 if (--count == 0) {
1647 kfree(rss_new);
1648 return -EINVAL;
1649 }
1650
1651 udelay(1);
1652 }
1653
1654 spin_lock_bh(&adapter->adv_rss_lock);
1655 rss_old = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs);
1656 if (rss_old) {
1657 if (rss_old->state != IAVF_ADV_RSS_ACTIVE) {
1658 err = -EBUSY;
1659 } else if (rss_old->hash_flds != hash_flds) {
1660 rss_old->state = IAVF_ADV_RSS_ADD_REQUEST;
1661 rss_old->hash_flds = hash_flds;
1662 memcpy(&rss_old->cfg_msg, &rss_new->cfg_msg,
1663 sizeof(rss_new->cfg_msg));
1664 adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG;
1665 } else {
1666 err = -EEXIST;
1667 }
1668 } else {
1669 rss_new_add = true;
1670 rss_new->state = IAVF_ADV_RSS_ADD_REQUEST;
1671 rss_new->packet_hdrs = hdrs;
1672 rss_new->hash_flds = hash_flds;
1673 list_add_tail(&rss_new->list, &adapter->adv_rss_list_head);
1674 adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG;
1675 }
1676 spin_unlock_bh(&adapter->adv_rss_lock);
1677
1678 if (!err)
1679 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1680
1681 mutex_unlock(&adapter->crit_lock);
1682
1683 if (!rss_new_add)
1684 kfree(rss_new);
1685
1686 return err;
1687 }
1688
1689 /**
1690 * iavf_get_adv_rss_hash_opt - Retrieve hash fields for a given flow-type
1691 * @adapter: pointer to the VF adapter structure
1692 * @cmd: ethtool rxnfc command
1693 *
1694 * Returns Success if the flow input set is supported.
1695 */
1696 static int
iavf_get_adv_rss_hash_opt(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)1697 iavf_get_adv_rss_hash_opt(struct iavf_adapter *adapter,
1698 struct ethtool_rxnfc *cmd)
1699 {
1700 struct iavf_adv_rss *rss;
1701 u64 hash_flds;
1702 u32 hdrs;
1703
1704 if (!ADV_RSS_SUPPORT(adapter))
1705 return -EOPNOTSUPP;
1706
1707 cmd->data = 0;
1708
1709 hdrs = iavf_adv_rss_parse_hdrs(cmd);
1710 if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE)
1711 return -EINVAL;
1712
1713 spin_lock_bh(&adapter->adv_rss_lock);
1714 rss = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs);
1715 if (rss)
1716 hash_flds = rss->hash_flds;
1717 else
1718 hash_flds = IAVF_ADV_RSS_HASH_INVALID;
1719 spin_unlock_bh(&adapter->adv_rss_lock);
1720
1721 if (hash_flds == IAVF_ADV_RSS_HASH_INVALID)
1722 return -EINVAL;
1723
1724 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA |
1725 IAVF_ADV_RSS_HASH_FLD_IPV6_SA))
1726 cmd->data |= (u64)RXH_IP_SRC;
1727
1728 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA |
1729 IAVF_ADV_RSS_HASH_FLD_IPV6_DA))
1730 cmd->data |= (u64)RXH_IP_DST;
1731
1732 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT |
1733 IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT |
1734 IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT))
1735 cmd->data |= (u64)RXH_L4_B_0_1;
1736
1737 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT |
1738 IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT |
1739 IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT))
1740 cmd->data |= (u64)RXH_L4_B_2_3;
1741
1742 return 0;
1743 }
1744
1745 /**
1746 * iavf_set_rxnfc - command to set Rx flow rules.
1747 * @netdev: network interface device structure
1748 * @cmd: ethtool rxnfc command
1749 *
1750 * Returns 0 for success and negative values for errors
1751 */
iavf_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)1752 static int iavf_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1753 {
1754 struct iavf_adapter *adapter = netdev_priv(netdev);
1755 int ret = -EOPNOTSUPP;
1756
1757 switch (cmd->cmd) {
1758 case ETHTOOL_SRXCLSRLINS:
1759 ret = iavf_add_fdir_ethtool(adapter, cmd);
1760 break;
1761 case ETHTOOL_SRXCLSRLDEL:
1762 ret = iavf_del_fdir_ethtool(adapter, cmd);
1763 break;
1764 case ETHTOOL_SRXFH:
1765 ret = iavf_set_adv_rss_hash_opt(adapter, cmd);
1766 break;
1767 default:
1768 break;
1769 }
1770
1771 return ret;
1772 }
1773
1774 /**
1775 * iavf_get_rxnfc - command to get RX flow classification rules
1776 * @netdev: network interface device structure
1777 * @cmd: ethtool rxnfc command
1778 * @rule_locs: pointer to store rule locations
1779 *
1780 * Returns Success if the command is supported.
1781 **/
iavf_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, u32 *rule_locs)1782 static int iavf_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1783 u32 *rule_locs)
1784 {
1785 struct iavf_adapter *adapter = netdev_priv(netdev);
1786 int ret = -EOPNOTSUPP;
1787
1788 switch (cmd->cmd) {
1789 case ETHTOOL_GRXRINGS:
1790 cmd->data = adapter->num_active_queues;
1791 ret = 0;
1792 break;
1793 case ETHTOOL_GRXCLSRLCNT:
1794 if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED))
1795 break;
1796 spin_lock_bh(&adapter->fdir_fltr_lock);
1797 cmd->rule_cnt = adapter->fdir_active_fltr;
1798 spin_unlock_bh(&adapter->fdir_fltr_lock);
1799 cmd->data = IAVF_MAX_FDIR_FILTERS;
1800 ret = 0;
1801 break;
1802 case ETHTOOL_GRXCLSRULE:
1803 ret = iavf_get_ethtool_fdir_entry(adapter, cmd);
1804 break;
1805 case ETHTOOL_GRXCLSRLALL:
1806 ret = iavf_get_fdir_fltr_ids(adapter, cmd, (u32 *)rule_locs);
1807 break;
1808 case ETHTOOL_GRXFH:
1809 ret = iavf_get_adv_rss_hash_opt(adapter, cmd);
1810 break;
1811 default:
1812 break;
1813 }
1814
1815 return ret;
1816 }
1817 /**
1818 * iavf_get_channels: get the number of channels supported by the device
1819 * @netdev: network interface device structure
1820 * @ch: channel information structure
1821 *
1822 * For the purposes of our device, we only use combined channels, i.e. a tx/rx
1823 * queue pair. Report one extra channel to match our "other" MSI-X vector.
1824 **/
iavf_get_channels(struct net_device *netdev, struct ethtool_channels *ch)1825 static void iavf_get_channels(struct net_device *netdev,
1826 struct ethtool_channels *ch)
1827 {
1828 struct iavf_adapter *adapter = netdev_priv(netdev);
1829
1830 /* Report maximum channels */
1831 ch->max_combined = adapter->vsi_res->num_queue_pairs;
1832
1833 ch->max_other = NONQ_VECS;
1834 ch->other_count = NONQ_VECS;
1835
1836 ch->combined_count = adapter->num_active_queues;
1837 }
1838
1839 /**
1840 * iavf_set_channels: set the new channel count
1841 * @netdev: network interface device structure
1842 * @ch: channel information structure
1843 *
1844 * Negotiate a new number of channels with the PF then do a reset. During
1845 * reset we'll realloc queues and fix the RSS table. Returns 0 on success,
1846 * negative on failure.
1847 **/
iavf_set_channels(struct net_device *netdev, struct ethtool_channels *ch)1848 static int iavf_set_channels(struct net_device *netdev,
1849 struct ethtool_channels *ch)
1850 {
1851 struct iavf_adapter *adapter = netdev_priv(netdev);
1852 u32 num_req = ch->combined_count;
1853 int ret = 0;
1854
1855 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
1856 adapter->num_tc) {
1857 dev_info(&adapter->pdev->dev, "Cannot set channels since ADq is enabled.\n");
1858 return -EINVAL;
1859 }
1860
1861 /* All of these should have already been checked by ethtool before this
1862 * even gets to us, but just to be sure.
1863 */
1864 if (num_req == 0 || num_req > adapter->vsi_res->num_queue_pairs)
1865 return -EINVAL;
1866
1867 if (num_req == adapter->num_active_queues)
1868 return 0;
1869
1870 if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS)
1871 return -EINVAL;
1872
1873 adapter->num_req_queues = num_req;
1874 adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
1875 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
1876
1877 ret = iavf_wait_for_reset(adapter);
1878 if (ret)
1879 netdev_warn(netdev, "Changing channel count timeout or interrupted waiting for reset");
1880
1881 return ret;
1882 }
1883
1884 /**
1885 * iavf_get_rxfh_key_size - get the RSS hash key size
1886 * @netdev: network interface device structure
1887 *
1888 * Returns the table size.
1889 **/
iavf_get_rxfh_key_size(struct net_device *netdev)1890 static u32 iavf_get_rxfh_key_size(struct net_device *netdev)
1891 {
1892 struct iavf_adapter *adapter = netdev_priv(netdev);
1893
1894 return adapter->rss_key_size;
1895 }
1896
1897 /**
1898 * iavf_get_rxfh_indir_size - get the rx flow hash indirection table size
1899 * @netdev: network interface device structure
1900 *
1901 * Returns the table size.
1902 **/
iavf_get_rxfh_indir_size(struct net_device *netdev)1903 static u32 iavf_get_rxfh_indir_size(struct net_device *netdev)
1904 {
1905 struct iavf_adapter *adapter = netdev_priv(netdev);
1906
1907 return adapter->rss_lut_size;
1908 }
1909
1910 /**
1911 * iavf_get_rxfh - get the rx flow hash indirection table
1912 * @netdev: network interface device structure
1913 * @indir: indirection table
1914 * @key: hash key
1915 * @hfunc: hash function in use
1916 *
1917 * Reads the indirection table directly from the hardware. Always returns 0.
1918 **/
iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, u8 *hfunc)1919 static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1920 u8 *hfunc)
1921 {
1922 struct iavf_adapter *adapter = netdev_priv(netdev);
1923 u16 i;
1924
1925 if (hfunc)
1926 *hfunc = ETH_RSS_HASH_TOP;
1927 if (key)
1928 memcpy(key, adapter->rss_key, adapter->rss_key_size);
1929
1930 if (indir)
1931 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
1932 for (i = 0; i < adapter->rss_lut_size; i++)
1933 indir[i] = (u32)adapter->rss_lut[i];
1934
1935 return 0;
1936 }
1937
1938 /**
1939 * iavf_set_rxfh - set the rx flow hash indirection table
1940 * @netdev: network interface device structure
1941 * @indir: indirection table
1942 * @key: hash key
1943 * @hfunc: hash function to use
1944 *
1945 * Returns -EINVAL if the table specifies an invalid queue id, otherwise
1946 * returns 0 after programming the table.
1947 **/
iavf_set_rxfh(struct net_device *netdev, const u32 *indir, const u8 *key, const u8 hfunc)1948 static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
1949 const u8 *key, const u8 hfunc)
1950 {
1951 struct iavf_adapter *adapter = netdev_priv(netdev);
1952 u16 i;
1953
1954 /* Only support toeplitz hash function */
1955 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1956 return -EOPNOTSUPP;
1957
1958 if (!key && !indir)
1959 return 0;
1960
1961 if (key)
1962 memcpy(adapter->rss_key, key, adapter->rss_key_size);
1963
1964 if (indir) {
1965 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
1966 for (i = 0; i < adapter->rss_lut_size; i++)
1967 adapter->rss_lut[i] = (u8)(indir[i]);
1968 }
1969
1970 return iavf_config_rss(adapter);
1971 }
1972
1973 static const struct ethtool_ops iavf_ethtool_ops = {
1974 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1975 ETHTOOL_COALESCE_USE_ADAPTIVE,
1976 .get_drvinfo = iavf_get_drvinfo,
1977 .get_link = ethtool_op_get_link,
1978 .get_ringparam = iavf_get_ringparam,
1979 .set_ringparam = iavf_set_ringparam,
1980 .get_strings = iavf_get_strings,
1981 .get_ethtool_stats = iavf_get_ethtool_stats,
1982 .get_sset_count = iavf_get_sset_count,
1983 .get_priv_flags = iavf_get_priv_flags,
1984 .set_priv_flags = iavf_set_priv_flags,
1985 .get_msglevel = iavf_get_msglevel,
1986 .set_msglevel = iavf_set_msglevel,
1987 .get_coalesce = iavf_get_coalesce,
1988 .set_coalesce = iavf_set_coalesce,
1989 .get_per_queue_coalesce = iavf_get_per_queue_coalesce,
1990 .set_per_queue_coalesce = iavf_set_per_queue_coalesce,
1991 .set_rxnfc = iavf_set_rxnfc,
1992 .get_rxnfc = iavf_get_rxnfc,
1993 .get_rxfh_indir_size = iavf_get_rxfh_indir_size,
1994 .get_rxfh = iavf_get_rxfh,
1995 .set_rxfh = iavf_set_rxfh,
1996 .get_channels = iavf_get_channels,
1997 .set_channels = iavf_set_channels,
1998 .get_rxfh_key_size = iavf_get_rxfh_key_size,
1999 .get_link_ksettings = iavf_get_link_ksettings,
2000 };
2001
2002 /**
2003 * iavf_set_ethtool_ops - Initialize ethtool ops struct
2004 * @netdev: network interface device structure
2005 *
2006 * Sets ethtool ops struct in our netdev so that ethtool can call
2007 * our functions.
2008 **/
iavf_set_ethtool_ops(struct net_device *netdev)2009 void iavf_set_ethtool_ops(struct net_device *netdev)
2010 {
2011 netdev->ethtool_ops = &iavf_ethtool_ops;
2012 }
2013