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Merge branch 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penber...
[deliverable/linux.git] / drivers / net / gianfar_ethtool.c
1 /*
2 * drivers/net/gianfar_ethtool.c
3 *
4 * Gianfar Ethernet Driver
5 * Ethtool support for Gianfar Enet
6 * Based on e1000 ethtool support
7 *
8 * Author: Andy Fleming
9 * Maintainer: Kumar Gala
10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
11 *
12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
13 *
14 * This software may be used and distributed according to
15 * the terms of the GNU Public License, Version 2, incorporated herein
16 * by reference.
17 */
18
19 #include <linux/kernel.h>
20 #include <linux/string.h>
21 #include <linux/errno.h>
22 #include <linux/interrupt.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/netdevice.h>
26 #include <linux/etherdevice.h>
27 #include <linux/skbuff.h>
28 #include <linux/spinlock.h>
29 #include <linux/mm.h>
30
31 #include <asm/io.h>
32 #include <asm/irq.h>
33 #include <asm/uaccess.h>
34 #include <linux/module.h>
35 #include <linux/crc32.h>
36 #include <asm/types.h>
37 #include <linux/ethtool.h>
38 #include <linux/mii.h>
39 #include <linux/phy.h>
40
41 #include "gianfar.h"
42
43 extern void gfar_start(struct net_device *dev);
44 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
45
46 #define GFAR_MAX_COAL_USECS 0xffff
47 #define GFAR_MAX_COAL_FRAMES 0xff
48 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
49 u64 * buf);
50 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
51 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
52 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
53 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
54 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
55 static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo);
56
57 static char stat_gstrings[][ETH_GSTRING_LEN] = {
58 "rx-dropped-by-kernel",
59 "rx-large-frame-errors",
60 "rx-short-frame-errors",
61 "rx-non-octet-errors",
62 "rx-crc-errors",
63 "rx-overrun-errors",
64 "rx-busy-errors",
65 "rx-babbling-errors",
66 "rx-truncated-frames",
67 "ethernet-bus-error",
68 "tx-babbling-errors",
69 "tx-underrun-errors",
70 "rx-skb-missing-errors",
71 "tx-timeout-errors",
72 "tx-rx-64-frames",
73 "tx-rx-65-127-frames",
74 "tx-rx-128-255-frames",
75 "tx-rx-256-511-frames",
76 "tx-rx-512-1023-frames",
77 "tx-rx-1024-1518-frames",
78 "tx-rx-1519-1522-good-vlan",
79 "rx-bytes",
80 "rx-packets",
81 "rx-fcs-errors",
82 "receive-multicast-packet",
83 "receive-broadcast-packet",
84 "rx-control-frame-packets",
85 "rx-pause-frame-packets",
86 "rx-unknown-op-code",
87 "rx-alignment-error",
88 "rx-frame-length-error",
89 "rx-code-error",
90 "rx-carrier-sense-error",
91 "rx-undersize-packets",
92 "rx-oversize-packets",
93 "rx-fragmented-frames",
94 "rx-jabber-frames",
95 "rx-dropped-frames",
96 "tx-byte-counter",
97 "tx-packets",
98 "tx-multicast-packets",
99 "tx-broadcast-packets",
100 "tx-pause-control-frames",
101 "tx-deferral-packets",
102 "tx-excessive-deferral-packets",
103 "tx-single-collision-packets",
104 "tx-multiple-collision-packets",
105 "tx-late-collision-packets",
106 "tx-excessive-collision-packets",
107 "tx-total-collision",
108 "reserved",
109 "tx-dropped-frames",
110 "tx-jabber-frames",
111 "tx-fcs-errors",
112 "tx-control-frames",
113 "tx-oversize-frames",
114 "tx-undersize-frames",
115 "tx-fragmented-frames",
116 };
117
118 /* Fill in a buffer with the strings which correspond to the
119 * stats */
120 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
121 {
122 struct gfar_private *priv = netdev_priv(dev);
123
124 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
125 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
126 else
127 memcpy(buf, stat_gstrings,
128 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
129 }
130
131 /* Fill in an array of 64-bit statistics from various sources.
132 * This array will be appended to the end of the ethtool_stats
133 * structure, and returned to user space
134 */
135 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf)
136 {
137 int i;
138 struct gfar_private *priv = netdev_priv(dev);
139 struct gfar __iomem *regs = priv->gfargrp[0].regs;
140 u64 *extra = (u64 *) & priv->extra_stats;
141
142 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
143 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
144 struct gfar_stats *stats = (struct gfar_stats *) buf;
145
146 for (i = 0; i < GFAR_RMON_LEN; i++)
147 stats->rmon[i] = (u64) gfar_read(&rmon[i]);
148
149 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
150 stats->extra[i] = extra[i];
151 } else
152 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
153 buf[i] = extra[i];
154 }
155
156 static int gfar_sset_count(struct net_device *dev, int sset)
157 {
158 struct gfar_private *priv = netdev_priv(dev);
159
160 switch (sset) {
161 case ETH_SS_STATS:
162 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
163 return GFAR_STATS_LEN;
164 else
165 return GFAR_EXTRA_STATS_LEN;
166 default:
167 return -EOPNOTSUPP;
168 }
169 }
170
171 /* Fills in the drvinfo structure with some basic info */
172 static void gfar_gdrvinfo(struct net_device *dev, struct
173 ethtool_drvinfo *drvinfo)
174 {
175 strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
176 strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
177 strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
178 strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
179 drvinfo->regdump_len = 0;
180 drvinfo->eedump_len = 0;
181 }
182
183
184 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
185 {
186 struct gfar_private *priv = netdev_priv(dev);
187 struct phy_device *phydev = priv->phydev;
188
189 if (NULL == phydev)
190 return -ENODEV;
191
192 return phy_ethtool_sset(phydev, cmd);
193 }
194
195
196 /* Return the current settings in the ethtool_cmd structure */
197 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
198 {
199 struct gfar_private *priv = netdev_priv(dev);
200 struct phy_device *phydev = priv->phydev;
201 struct gfar_priv_rx_q *rx_queue = NULL;
202 struct gfar_priv_tx_q *tx_queue = NULL;
203
204 if (NULL == phydev)
205 return -ENODEV;
206 tx_queue = priv->tx_queue[0];
207 rx_queue = priv->rx_queue[0];
208
209 /* etsec-1.7 and older versions have only one txic
210 * and rxic regs although they support multiple queues */
211 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
212 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
213
214 return phy_ethtool_gset(phydev, cmd);
215 }
216
217 /* Return the length of the register structure */
218 static int gfar_reglen(struct net_device *dev)
219 {
220 return sizeof (struct gfar);
221 }
222
223 /* Return a dump of the GFAR register space */
224 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
225 {
226 int i;
227 struct gfar_private *priv = netdev_priv(dev);
228 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
229 u32 *buf = (u32 *) regbuf;
230
231 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
232 buf[i] = gfar_read(&theregs[i]);
233 }
234
235 /* Convert microseconds to ethernet clock ticks, which changes
236 * depending on what speed the controller is running at */
237 static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
238 {
239 unsigned int count;
240
241 /* The timer is different, depending on the interface speed */
242 switch (priv->phydev->speed) {
243 case SPEED_1000:
244 count = GFAR_GBIT_TIME;
245 break;
246 case SPEED_100:
247 count = GFAR_100_TIME;
248 break;
249 case SPEED_10:
250 default:
251 count = GFAR_10_TIME;
252 break;
253 }
254
255 /* Make sure we return a number greater than 0
256 * if usecs > 0 */
257 return (usecs * 1000 + count - 1) / count;
258 }
259
260 /* Convert ethernet clock ticks to microseconds */
261 static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
262 {
263 unsigned int count;
264
265 /* The timer is different, depending on the interface speed */
266 switch (priv->phydev->speed) {
267 case SPEED_1000:
268 count = GFAR_GBIT_TIME;
269 break;
270 case SPEED_100:
271 count = GFAR_100_TIME;
272 break;
273 case SPEED_10:
274 default:
275 count = GFAR_10_TIME;
276 break;
277 }
278
279 /* Make sure we return a number greater than 0 */
280 /* if ticks is > 0 */
281 return (ticks * count) / 1000;
282 }
283
284 /* Get the coalescing parameters, and put them in the cvals
285 * structure. */
286 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
287 {
288 struct gfar_private *priv = netdev_priv(dev);
289 struct gfar_priv_rx_q *rx_queue = NULL;
290 struct gfar_priv_tx_q *tx_queue = NULL;
291 unsigned long rxtime;
292 unsigned long rxcount;
293 unsigned long txtime;
294 unsigned long txcount;
295
296 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
297 return -EOPNOTSUPP;
298
299 if (NULL == priv->phydev)
300 return -ENODEV;
301
302 rx_queue = priv->rx_queue[0];
303 tx_queue = priv->tx_queue[0];
304
305 rxtime = get_ictt_value(rx_queue->rxic);
306 rxcount = get_icft_value(rx_queue->rxic);
307 txtime = get_ictt_value(tx_queue->txic);
308 txcount = get_icft_value(tx_queue->txic);
309 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
310 cvals->rx_max_coalesced_frames = rxcount;
311
312 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
313 cvals->tx_max_coalesced_frames = txcount;
314
315 cvals->use_adaptive_rx_coalesce = 0;
316 cvals->use_adaptive_tx_coalesce = 0;
317
318 cvals->pkt_rate_low = 0;
319 cvals->rx_coalesce_usecs_low = 0;
320 cvals->rx_max_coalesced_frames_low = 0;
321 cvals->tx_coalesce_usecs_low = 0;
322 cvals->tx_max_coalesced_frames_low = 0;
323
324 /* When the packet rate is below pkt_rate_high but above
325 * pkt_rate_low (both measured in packets per second) the
326 * normal {rx,tx}_* coalescing parameters are used.
327 */
328
329 /* When the packet rate is (measured in packets per second)
330 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
331 * used.
332 */
333 cvals->pkt_rate_high = 0;
334 cvals->rx_coalesce_usecs_high = 0;
335 cvals->rx_max_coalesced_frames_high = 0;
336 cvals->tx_coalesce_usecs_high = 0;
337 cvals->tx_max_coalesced_frames_high = 0;
338
339 /* How often to do adaptive coalescing packet rate sampling,
340 * measured in seconds. Must not be zero.
341 */
342 cvals->rate_sample_interval = 0;
343
344 return 0;
345 }
346
347 /* Change the coalescing values.
348 * Both cvals->*_usecs and cvals->*_frames have to be > 0
349 * in order for coalescing to be active
350 */
351 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
352 {
353 struct gfar_private *priv = netdev_priv(dev);
354 int i = 0;
355
356 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
357 return -EOPNOTSUPP;
358
359 /* Set up rx coalescing */
360 /* As of now, we will enable/disable coalescing for all
361 * queues together in case of eTSEC2, this will be modified
362 * along with the ethtool interface */
363 if ((cvals->rx_coalesce_usecs == 0) ||
364 (cvals->rx_max_coalesced_frames == 0)) {
365 for (i = 0; i < priv->num_rx_queues; i++)
366 priv->rx_queue[i]->rxcoalescing = 0;
367 } else {
368 for (i = 0; i < priv->num_rx_queues; i++)
369 priv->rx_queue[i]->rxcoalescing = 1;
370 }
371
372 if (NULL == priv->phydev)
373 return -ENODEV;
374
375 /* Check the bounds of the values */
376 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
377 pr_info("Coalescing is limited to %d microseconds\n",
378 GFAR_MAX_COAL_USECS);
379 return -EINVAL;
380 }
381
382 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
383 pr_info("Coalescing is limited to %d frames\n",
384 GFAR_MAX_COAL_FRAMES);
385 return -EINVAL;
386 }
387
388 for (i = 0; i < priv->num_rx_queues; i++) {
389 priv->rx_queue[i]->rxic = mk_ic_value(
390 cvals->rx_max_coalesced_frames,
391 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
392 }
393
394 /* Set up tx coalescing */
395 if ((cvals->tx_coalesce_usecs == 0) ||
396 (cvals->tx_max_coalesced_frames == 0)) {
397 for (i = 0; i < priv->num_tx_queues; i++)
398 priv->tx_queue[i]->txcoalescing = 0;
399 } else {
400 for (i = 0; i < priv->num_tx_queues; i++)
401 priv->tx_queue[i]->txcoalescing = 1;
402 }
403
404 /* Check the bounds of the values */
405 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
406 pr_info("Coalescing is limited to %d microseconds\n",
407 GFAR_MAX_COAL_USECS);
408 return -EINVAL;
409 }
410
411 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
412 pr_info("Coalescing is limited to %d frames\n",
413 GFAR_MAX_COAL_FRAMES);
414 return -EINVAL;
415 }
416
417 for (i = 0; i < priv->num_tx_queues; i++) {
418 priv->tx_queue[i]->txic = mk_ic_value(
419 cvals->tx_max_coalesced_frames,
420 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
421 }
422
423 gfar_configure_coalescing(priv, 0xFF, 0xFF);
424
425 return 0;
426 }
427
428 /* Fills in rvals with the current ring parameters. Currently,
429 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
430 * jumbo are ignored by the driver */
431 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
432 {
433 struct gfar_private *priv = netdev_priv(dev);
434 struct gfar_priv_tx_q *tx_queue = NULL;
435 struct gfar_priv_rx_q *rx_queue = NULL;
436
437 tx_queue = priv->tx_queue[0];
438 rx_queue = priv->rx_queue[0];
439
440 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
441 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
442 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
443 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
444
445 /* Values changeable by the user. The valid values are
446 * in the range 1 to the "*_max_pending" counterpart above.
447 */
448 rvals->rx_pending = rx_queue->rx_ring_size;
449 rvals->rx_mini_pending = rx_queue->rx_ring_size;
450 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
451 rvals->tx_pending = tx_queue->tx_ring_size;
452 }
453
454 /* Change the current ring parameters, stopping the controller if
455 * necessary so that we don't mess things up while we're in
456 * motion. We wait for the ring to be clean before reallocating
457 * the rings. */
458 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
459 {
460 struct gfar_private *priv = netdev_priv(dev);
461 int err = 0, i = 0;
462
463 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
464 return -EINVAL;
465
466 if (!is_power_of_2(rvals->rx_pending)) {
467 printk("%s: Ring sizes must be a power of 2\n",
468 dev->name);
469 return -EINVAL;
470 }
471
472 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
473 return -EINVAL;
474
475 if (!is_power_of_2(rvals->tx_pending)) {
476 printk("%s: Ring sizes must be a power of 2\n",
477 dev->name);
478 return -EINVAL;
479 }
480
481
482 if (dev->flags & IFF_UP) {
483 unsigned long flags;
484
485 /* Halt TX and RX, and process the frames which
486 * have already been received */
487 local_irq_save(flags);
488 lock_tx_qs(priv);
489 lock_rx_qs(priv);
490
491 gfar_halt(dev);
492
493 unlock_rx_qs(priv);
494 unlock_tx_qs(priv);
495 local_irq_restore(flags);
496
497 for (i = 0; i < priv->num_rx_queues; i++)
498 gfar_clean_rx_ring(priv->rx_queue[i],
499 priv->rx_queue[i]->rx_ring_size);
500
501 /* Now we take down the rings to rebuild them */
502 stop_gfar(dev);
503 }
504
505 /* Change the size */
506 for (i = 0; i < priv->num_rx_queues; i++) {
507 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
508 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
509 priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size;
510 }
511
512 /* Rebuild the rings with the new size */
513 if (dev->flags & IFF_UP) {
514 err = startup_gfar(dev);
515 netif_tx_wake_all_queues(dev);
516 }
517 return err;
518 }
519
520 int gfar_set_features(struct net_device *dev, u32 features)
521 {
522 struct gfar_private *priv = netdev_priv(dev);
523 unsigned long flags;
524 int err = 0, i = 0;
525 u32 changed = dev->features ^ features;
526
527 if (!(changed & NETIF_F_RXCSUM))
528 return 0;
529
530 if (dev->flags & IFF_UP) {
531 /* Halt TX and RX, and process the frames which
532 * have already been received */
533 local_irq_save(flags);
534 lock_tx_qs(priv);
535 lock_rx_qs(priv);
536
537 gfar_halt(dev);
538
539 unlock_tx_qs(priv);
540 unlock_rx_qs(priv);
541 local_irq_restore(flags);
542
543 for (i = 0; i < priv->num_rx_queues; i++)
544 gfar_clean_rx_ring(priv->rx_queue[i],
545 priv->rx_queue[i]->rx_ring_size);
546
547 /* Now we take down the rings to rebuild them */
548 stop_gfar(dev);
549
550 dev->features = features;
551
552 err = startup_gfar(dev);
553 netif_tx_wake_all_queues(dev);
554 }
555 return err;
556 }
557
558 static uint32_t gfar_get_msglevel(struct net_device *dev)
559 {
560 struct gfar_private *priv = netdev_priv(dev);
561 return priv->msg_enable;
562 }
563
564 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
565 {
566 struct gfar_private *priv = netdev_priv(dev);
567 priv->msg_enable = data;
568 }
569
570 #ifdef CONFIG_PM
571 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
572 {
573 struct gfar_private *priv = netdev_priv(dev);
574
575 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
576 wol->supported = WAKE_MAGIC;
577 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
578 } else {
579 wol->supported = wol->wolopts = 0;
580 }
581 }
582
583 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
584 {
585 struct gfar_private *priv = netdev_priv(dev);
586 unsigned long flags;
587
588 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
589 wol->wolopts != 0)
590 return -EINVAL;
591
592 if (wol->wolopts & ~WAKE_MAGIC)
593 return -EINVAL;
594
595 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
596
597 spin_lock_irqsave(&priv->bflock, flags);
598 priv->wol_en = !!device_may_wakeup(&dev->dev);
599 spin_unlock_irqrestore(&priv->bflock, flags);
600
601 return 0;
602 }
603 #endif
604
605 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
606 {
607 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
608
609 if (ethflow & RXH_L2DA) {
610 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
611 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
612 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
613 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
614 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
615 priv->cur_filer_idx = priv->cur_filer_idx - 1;
616
617 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
618 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
619 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
620 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
621 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
622 priv->cur_filer_idx = priv->cur_filer_idx - 1;
623 }
624
625 if (ethflow & RXH_VLAN) {
626 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
627 RQFCR_AND | RQFCR_HASHTBL_0;
628 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
629 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
630 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
631 priv->cur_filer_idx = priv->cur_filer_idx - 1;
632 }
633
634 if (ethflow & RXH_IP_SRC) {
635 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
636 RQFCR_AND | RQFCR_HASHTBL_0;
637 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
638 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
639 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
640 priv->cur_filer_idx = priv->cur_filer_idx - 1;
641 }
642
643 if (ethflow & (RXH_IP_DST)) {
644 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
645 RQFCR_AND | RQFCR_HASHTBL_0;
646 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
647 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
648 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
649 priv->cur_filer_idx = priv->cur_filer_idx - 1;
650 }
651
652 if (ethflow & RXH_L3_PROTO) {
653 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
654 RQFCR_AND | RQFCR_HASHTBL_0;
655 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
656 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
657 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
658 priv->cur_filer_idx = priv->cur_filer_idx - 1;
659 }
660
661 if (ethflow & RXH_L4_B_0_1) {
662 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
663 RQFCR_AND | RQFCR_HASHTBL_0;
664 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
665 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
666 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
667 priv->cur_filer_idx = priv->cur_filer_idx - 1;
668 }
669
670 if (ethflow & RXH_L4_B_2_3) {
671 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
672 RQFCR_AND | RQFCR_HASHTBL_0;
673 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
674 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
675 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
676 priv->cur_filer_idx = priv->cur_filer_idx - 1;
677 }
678 }
679
680 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
681 {
682 unsigned int last_rule_idx = priv->cur_filer_idx;
683 unsigned int cmp_rqfpr;
684 unsigned int local_rqfpr[MAX_FILER_IDX + 1];
685 unsigned int local_rqfcr[MAX_FILER_IDX + 1];
686 int i = 0x0, k = 0x0;
687 int j = MAX_FILER_IDX, l = 0x0;
688
689 switch (class) {
690 case TCP_V4_FLOW:
691 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
692 break;
693 case UDP_V4_FLOW:
694 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
695 break;
696 case TCP_V6_FLOW:
697 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
698 break;
699 case UDP_V6_FLOW:
700 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
701 break;
702 default:
703 printk(KERN_ERR "Right now this class is not supported\n");
704 return 0;
705 }
706
707 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
708 local_rqfpr[j] = priv->ftp_rqfpr[i];
709 local_rqfcr[j] = priv->ftp_rqfcr[i];
710 j--;
711 if ((priv->ftp_rqfcr[i] == (RQFCR_PID_PARSE |
712 RQFCR_CLE |RQFCR_AND)) &&
713 (priv->ftp_rqfpr[i] == cmp_rqfpr))
714 break;
715 }
716
717 if (i == MAX_FILER_IDX + 1) {
718 printk(KERN_ERR "No parse rule found, ");
719 printk(KERN_ERR "can't create hash rules\n");
720 return 0;
721 }
722
723 /* If a match was found, then it begins the starting of a cluster rule
724 * if it was already programmed, we need to overwrite these rules
725 */
726 for (l = i+1; l < MAX_FILER_IDX; l++) {
727 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
728 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
729 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
730 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
731 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
732 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
733 priv->ftp_rqfpr[l]);
734 break;
735 }
736
737 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
738 (priv->ftp_rqfcr[l] & RQFCR_AND))
739 continue;
740 else {
741 local_rqfpr[j] = priv->ftp_rqfpr[l];
742 local_rqfcr[j] = priv->ftp_rqfcr[l];
743 j--;
744 }
745 }
746
747 priv->cur_filer_idx = l - 1;
748 last_rule_idx = l;
749
750 /* hash rules */
751 ethflow_to_filer_rules(priv, ethflow);
752
753 /* Write back the popped out rules again */
754 for (k = j+1; k < MAX_FILER_IDX; k++) {
755 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
756 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
757 gfar_write_filer(priv, priv->cur_filer_idx,
758 local_rqfcr[k], local_rqfpr[k]);
759 if (!priv->cur_filer_idx)
760 break;
761 priv->cur_filer_idx = priv->cur_filer_idx - 1;
762 }
763
764 return 1;
765 }
766
767 static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
768 {
769 /* write the filer rules here */
770 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
771 return -EINVAL;
772
773 return 0;
774 }
775
776 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
777 {
778 struct gfar_private *priv = netdev_priv(dev);
779 int ret = 0;
780
781 switch(cmd->cmd) {
782 case ETHTOOL_SRXFH:
783 ret = gfar_set_hash_opts(priv, cmd);
784 break;
785 default:
786 ret = -EINVAL;
787 }
788
789 return ret;
790 }
791
792 const struct ethtool_ops gfar_ethtool_ops = {
793 .get_settings = gfar_gsettings,
794 .set_settings = gfar_ssettings,
795 .get_drvinfo = gfar_gdrvinfo,
796 .get_regs_len = gfar_reglen,
797 .get_regs = gfar_get_regs,
798 .get_link = ethtool_op_get_link,
799 .get_coalesce = gfar_gcoalesce,
800 .set_coalesce = gfar_scoalesce,
801 .get_ringparam = gfar_gringparam,
802 .set_ringparam = gfar_sringparam,
803 .get_strings = gfar_gstrings,
804 .get_sset_count = gfar_sset_count,
805 .get_ethtool_stats = gfar_fill_stats,
806 .get_msglevel = gfar_get_msglevel,
807 .set_msglevel = gfar_set_msglevel,
808 #ifdef CONFIG_PM
809 .get_wol = gfar_get_wol,
810 .set_wol = gfar_set_wol,
811 #endif
812 .set_rxnfc = gfar_set_nfc,
813 };
Linux kernel - Deliverables
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