1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2 /* Copyright 2019 NXP */
3
4 #include "enetc.h"
5
6 #include <net/pkt_sched.h>
7 #include <linux/math64.h>
8 #include <linux/refcount.h>
9 #include <net/pkt_cls.h>
10 #include <net/tc_act/tc_gate.h>
11
enetc_get_max_gcl_len(struct enetc_hw * hw)12 static u16 enetc_get_max_gcl_len(struct enetc_hw *hw)
13 {
14 return enetc_rd(hw, ENETC_QBV_PTGCAPR_OFFSET)
15 & ENETC_QBV_MAX_GCL_LEN_MASK;
16 }
17
enetc_sched_speed_set(struct enetc_ndev_priv * priv,int speed)18 void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed)
19 {
20 u32 old_speed = priv->speed;
21 u32 pspeed;
22
23 if (speed == old_speed)
24 return;
25
26 switch (speed) {
27 case SPEED_1000:
28 pspeed = ENETC_PMR_PSPEED_1000M;
29 break;
30 case SPEED_2500:
31 pspeed = ENETC_PMR_PSPEED_2500M;
32 break;
33 case SPEED_100:
34 pspeed = ENETC_PMR_PSPEED_100M;
35 break;
36 case SPEED_10:
37 default:
38 pspeed = ENETC_PMR_PSPEED_10M;
39 }
40
41 priv->speed = speed;
42 enetc_port_wr(&priv->si->hw, ENETC_PMR,
43 (enetc_port_rd(&priv->si->hw, ENETC_PMR)
44 & (~ENETC_PMR_PSPEED_MASK))
45 | pspeed);
46 }
47
enetc_setup_taprio(struct net_device * ndev,struct tc_taprio_qopt_offload * admin_conf)48 static int enetc_setup_taprio(struct net_device *ndev,
49 struct tc_taprio_qopt_offload *admin_conf)
50 {
51 struct enetc_ndev_priv *priv = netdev_priv(ndev);
52 struct enetc_cbd cbd = {.cmd = 0};
53 struct tgs_gcl_conf *gcl_config;
54 struct tgs_gcl_data *gcl_data;
55 struct gce *gce;
56 dma_addr_t dma;
57 u16 data_size;
58 u16 gcl_len;
59 u32 tge;
60 int err;
61 int i;
62
63 if (admin_conf->num_entries > enetc_get_max_gcl_len(&priv->si->hw))
64 return -EINVAL;
65 gcl_len = admin_conf->num_entries;
66
67 tge = enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET);
68 if (!admin_conf->enable) {
69 enetc_wr(&priv->si->hw,
70 ENETC_QBV_PTGCR_OFFSET,
71 tge & (~ENETC_QBV_TGE));
72 return 0;
73 }
74
75 if (admin_conf->cycle_time > U32_MAX ||
76 admin_conf->cycle_time_extension > U32_MAX)
77 return -EINVAL;
78
79 /* Configure the (administrative) gate control list using the
80 * control BD descriptor.
81 */
82 gcl_config = &cbd.gcl_conf;
83
84 data_size = struct_size(gcl_data, entry, gcl_len);
85 gcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
86 if (!gcl_data)
87 return -ENOMEM;
88
89 gce = (struct gce *)(gcl_data + 1);
90
91 /* Set all gates open as default */
92 gcl_config->atc = 0xff;
93 gcl_config->acl_len = cpu_to_le16(gcl_len);
94
95 gcl_data->btl = cpu_to_le32(lower_32_bits(admin_conf->base_time));
96 gcl_data->bth = cpu_to_le32(upper_32_bits(admin_conf->base_time));
97 gcl_data->ct = cpu_to_le32(admin_conf->cycle_time);
98 gcl_data->cte = cpu_to_le32(admin_conf->cycle_time_extension);
99
100 for (i = 0; i < gcl_len; i++) {
101 struct tc_taprio_sched_entry *temp_entry;
102 struct gce *temp_gce = gce + i;
103
104 temp_entry = &admin_conf->entries[i];
105
106 temp_gce->gate = (u8)temp_entry->gate_mask;
107 temp_gce->period = cpu_to_le32(temp_entry->interval);
108 }
109
110 cbd.length = cpu_to_le16(data_size);
111 cbd.status_flags = 0;
112
113 dma = dma_map_single(&priv->si->pdev->dev, gcl_data,
114 data_size, DMA_TO_DEVICE);
115 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
116 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
117 kfree(gcl_data);
118 return -ENOMEM;
119 }
120
121 cbd.addr[0] = lower_32_bits(dma);
122 cbd.addr[1] = upper_32_bits(dma);
123 cbd.cls = BDCR_CMD_PORT_GCL;
124 cbd.status_flags = 0;
125
126 enetc_wr(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET,
127 tge | ENETC_QBV_TGE);
128
129 err = enetc_send_cmd(priv->si, &cbd);
130 if (err)
131 enetc_wr(&priv->si->hw,
132 ENETC_QBV_PTGCR_OFFSET,
133 tge & (~ENETC_QBV_TGE));
134
135 dma_unmap_single(&priv->si->pdev->dev, dma, data_size, DMA_TO_DEVICE);
136 kfree(gcl_data);
137
138 return err;
139 }
140
enetc_setup_tc_taprio(struct net_device * ndev,void * type_data)141 int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data)
142 {
143 struct tc_taprio_qopt_offload *taprio = type_data;
144 struct enetc_ndev_priv *priv = netdev_priv(ndev);
145 int err;
146 int i;
147
148 /* TSD and Qbv are mutually exclusive in hardware */
149 for (i = 0; i < priv->num_tx_rings; i++)
150 if (priv->tx_ring[i]->tsd_enable)
151 return -EBUSY;
152
153 for (i = 0; i < priv->num_tx_rings; i++)
154 enetc_set_bdr_prio(&priv->si->hw,
155 priv->tx_ring[i]->index,
156 taprio->enable ? i : 0);
157
158 err = enetc_setup_taprio(ndev, taprio);
159
160 if (err)
161 for (i = 0; i < priv->num_tx_rings; i++)
162 enetc_set_bdr_prio(&priv->si->hw,
163 priv->tx_ring[i]->index,
164 taprio->enable ? 0 : i);
165
166 return err;
167 }
168
enetc_get_cbs_enable(struct enetc_hw * hw,u8 tc)169 static u32 enetc_get_cbs_enable(struct enetc_hw *hw, u8 tc)
170 {
171 return enetc_port_rd(hw, ENETC_PTCCBSR0(tc)) & ENETC_CBSE;
172 }
173
enetc_get_cbs_bw(struct enetc_hw * hw,u8 tc)174 static u8 enetc_get_cbs_bw(struct enetc_hw *hw, u8 tc)
175 {
176 return enetc_port_rd(hw, ENETC_PTCCBSR0(tc)) & ENETC_CBS_BW_MASK;
177 }
178
enetc_setup_tc_cbs(struct net_device * ndev,void * type_data)179 int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
180 {
181 struct enetc_ndev_priv *priv = netdev_priv(ndev);
182 struct tc_cbs_qopt_offload *cbs = type_data;
183 u32 port_transmit_rate = priv->speed;
184 u8 tc_nums = netdev_get_num_tc(ndev);
185 struct enetc_si *si = priv->si;
186 u32 hi_credit_bit, hi_credit_reg;
187 u32 max_interference_size;
188 u32 port_frame_max_size;
189 u8 tc = cbs->queue;
190 u8 prio_top, prio_next;
191 int bw_sum = 0;
192 u8 bw;
193
194 prio_top = netdev_get_prio_tc_map(ndev, tc_nums - 1);
195 prio_next = netdev_get_prio_tc_map(ndev, tc_nums - 2);
196
197 /* Support highest prio and second prio tc in cbs mode */
198 if (tc != prio_top && tc != prio_next)
199 return -EOPNOTSUPP;
200
201 if (!cbs->enable) {
202 /* Make sure the other TC that are numerically
203 * lower than this TC have been disabled.
204 */
205 if (tc == prio_top &&
206 enetc_get_cbs_enable(&si->hw, prio_next)) {
207 dev_err(&ndev->dev,
208 "Disable TC%d before disable TC%d\n",
209 prio_next, tc);
210 return -EINVAL;
211 }
212
213 enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), 0);
214 enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), 0);
215
216 return 0;
217 }
218
219 if (cbs->idleslope - cbs->sendslope != port_transmit_rate * 1000L ||
220 cbs->idleslope < 0 || cbs->sendslope > 0)
221 return -EOPNOTSUPP;
222
223 port_frame_max_size = ndev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
224
225 bw = cbs->idleslope / (port_transmit_rate * 10UL);
226
227 /* Make sure the other TC that are numerically
228 * higher than this TC have been enabled.
229 */
230 if (tc == prio_next) {
231 if (!enetc_get_cbs_enable(&si->hw, prio_top)) {
232 dev_err(&ndev->dev,
233 "Enable TC%d first before enable TC%d\n",
234 prio_top, prio_next);
235 return -EINVAL;
236 }
237 bw_sum += enetc_get_cbs_bw(&si->hw, prio_top);
238 }
239
240 if (bw_sum + bw >= 100) {
241 dev_err(&ndev->dev,
242 "The sum of all CBS Bandwidth can't exceed 100\n");
243 return -EINVAL;
244 }
245
246 enetc_port_rd(&si->hw, ENETC_PTCMSDUR(tc));
247
248 /* For top prio TC, the max_interfrence_size is maxSizedFrame.
249 *
250 * For next prio TC, the max_interfrence_size is calculated as below:
251 *
252 * max_interference_size = M0 + Ma + Ra * M0 / (R0 - Ra)
253 *
254 * - RA: idleSlope for AVB Class A
255 * - R0: port transmit rate
256 * - M0: maximum sized frame for the port
257 * - MA: maximum sized frame for AVB Class A
258 */
259
260 if (tc == prio_top) {
261 max_interference_size = port_frame_max_size * 8;
262 } else {
263 u32 m0, ma, r0, ra;
264
265 m0 = port_frame_max_size * 8;
266 ma = enetc_port_rd(&si->hw, ENETC_PTCMSDUR(prio_top)) * 8;
267 ra = enetc_get_cbs_bw(&si->hw, prio_top) *
268 port_transmit_rate * 10000ULL;
269 r0 = port_transmit_rate * 1000000ULL;
270 max_interference_size = m0 + ma +
271 (u32)div_u64((u64)ra * m0, r0 - ra);
272 }
273
274 /* hiCredit bits calculate by:
275 *
276 * maxSizedFrame * (idleSlope/portTxRate)
277 */
278 hi_credit_bit = max_interference_size * bw / 100;
279
280 /* hiCredit bits to hiCredit register need to calculated as:
281 *
282 * (enetClockFrequency / portTransmitRate) * 100
283 */
284 hi_credit_reg = (u32)div_u64((ENETC_CLK * 100ULL) * hi_credit_bit,
285 port_transmit_rate * 1000000ULL);
286
287 enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), hi_credit_reg);
288
289 /* Set bw register and enable this traffic class */
290 enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), bw | ENETC_CBSE);
291
292 return 0;
293 }
294
enetc_setup_tc_txtime(struct net_device * ndev,void * type_data)295 int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data)
296 {
297 struct enetc_ndev_priv *priv = netdev_priv(ndev);
298 struct tc_etf_qopt_offload *qopt = type_data;
299 u8 tc_nums = netdev_get_num_tc(ndev);
300 int tc;
301
302 if (!tc_nums)
303 return -EOPNOTSUPP;
304
305 tc = qopt->queue;
306
307 if (tc < 0 || tc >= priv->num_tx_rings)
308 return -EINVAL;
309
310 /* Do not support TXSTART and TX CSUM offload simutaniously */
311 if (ndev->features & NETIF_F_CSUM_MASK)
312 return -EBUSY;
313
314 /* TSD and Qbv are mutually exclusive in hardware */
315 if (enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET) & ENETC_QBV_TGE)
316 return -EBUSY;
317
318 priv->tx_ring[tc]->tsd_enable = qopt->enable;
319 enetc_port_wr(&priv->si->hw, ENETC_PTCTSDR(tc),
320 qopt->enable ? ENETC_TSDE : 0);
321
322 return 0;
323 }
324
325 enum streamid_type {
326 STREAMID_TYPE_RESERVED = 0,
327 STREAMID_TYPE_NULL,
328 STREAMID_TYPE_SMAC,
329 };
330
331 enum streamid_vlan_tagged {
332 STREAMID_VLAN_RESERVED = 0,
333 STREAMID_VLAN_TAGGED,
334 STREAMID_VLAN_UNTAGGED,
335 STREAMID_VLAN_ALL,
336 };
337
338 #define ENETC_PSFP_WILDCARD -1
339 #define HANDLE_OFFSET 100
340
341 enum forward_type {
342 FILTER_ACTION_TYPE_PSFP = BIT(0),
343 FILTER_ACTION_TYPE_ACL = BIT(1),
344 FILTER_ACTION_TYPE_BOTH = GENMASK(1, 0),
345 };
346
347 /* This is for limit output type for input actions */
348 struct actions_fwd {
349 u64 actions;
350 u64 keys; /* include the must needed keys */
351 enum forward_type output;
352 };
353
354 struct psfp_streamfilter_counters {
355 u64 matching_frames_count;
356 u64 passing_frames_count;
357 u64 not_passing_frames_count;
358 u64 passing_sdu_count;
359 u64 not_passing_sdu_count;
360 u64 red_frames_count;
361 };
362
363 struct enetc_streamid {
364 u32 index;
365 union {
366 u8 src_mac[6];
367 u8 dst_mac[6];
368 };
369 u8 filtertype;
370 u16 vid;
371 u8 tagged;
372 s32 handle;
373 };
374
375 struct enetc_psfp_filter {
376 u32 index;
377 s32 handle;
378 s8 prio;
379 u32 maxsdu;
380 u32 gate_id;
381 s32 meter_id;
382 refcount_t refcount;
383 struct hlist_node node;
384 };
385
386 struct enetc_psfp_gate {
387 u32 index;
388 s8 init_ipv;
389 u64 basetime;
390 u64 cycletime;
391 u64 cycletimext;
392 u32 num_entries;
393 refcount_t refcount;
394 struct hlist_node node;
395 struct action_gate_entry entries[];
396 };
397
398 /* Only enable the green color frame now
399 * Will add eir and ebs color blind, couple flag etc when
400 * policing action add more offloading parameters
401 */
402 struct enetc_psfp_meter {
403 u32 index;
404 u32 cir;
405 u32 cbs;
406 refcount_t refcount;
407 struct hlist_node node;
408 };
409
410 #define ENETC_PSFP_FLAGS_FMI BIT(0)
411
412 struct enetc_stream_filter {
413 struct enetc_streamid sid;
414 u32 sfi_index;
415 u32 sgi_index;
416 u32 flags;
417 u32 fmi_index;
418 struct flow_stats stats;
419 struct hlist_node node;
420 };
421
422 struct enetc_psfp {
423 unsigned long dev_bitmap;
424 unsigned long *psfp_sfi_bitmap;
425 struct hlist_head stream_list;
426 struct hlist_head psfp_filter_list;
427 struct hlist_head psfp_gate_list;
428 struct hlist_head psfp_meter_list;
429 spinlock_t psfp_lock; /* spinlock for the struct enetc_psfp r/w */
430 };
431
432 static struct actions_fwd enetc_act_fwd[] = {
433 {
434 BIT(FLOW_ACTION_GATE),
435 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS),
436 FILTER_ACTION_TYPE_PSFP
437 },
438 {
439 BIT(FLOW_ACTION_POLICE) |
440 BIT(FLOW_ACTION_GATE),
441 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS),
442 FILTER_ACTION_TYPE_PSFP
443 },
444 /* example for ACL actions */
445 {
446 BIT(FLOW_ACTION_DROP),
447 0,
448 FILTER_ACTION_TYPE_ACL
449 }
450 };
451
452 static struct enetc_psfp epsfp = {
453 .psfp_sfi_bitmap = NULL,
454 };
455
456 static LIST_HEAD(enetc_block_cb_list);
457
enetc_get_port(struct enetc_ndev_priv * priv)458 static inline int enetc_get_port(struct enetc_ndev_priv *priv)
459 {
460 return priv->si->pdev->devfn & 0x7;
461 }
462
463 /* Stream Identity Entry Set Descriptor */
enetc_streamid_hw_set(struct enetc_ndev_priv * priv,struct enetc_streamid * sid,u8 enable)464 static int enetc_streamid_hw_set(struct enetc_ndev_priv *priv,
465 struct enetc_streamid *sid,
466 u8 enable)
467 {
468 struct enetc_cbd cbd = {.cmd = 0};
469 struct streamid_data *si_data;
470 struct streamid_conf *si_conf;
471 u16 data_size;
472 dma_addr_t dma;
473 int err;
474
475 if (sid->index >= priv->psfp_cap.max_streamid)
476 return -EINVAL;
477
478 if (sid->filtertype != STREAMID_TYPE_NULL &&
479 sid->filtertype != STREAMID_TYPE_SMAC)
480 return -EOPNOTSUPP;
481
482 /* Disable operation before enable */
483 cbd.index = cpu_to_le16((u16)sid->index);
484 cbd.cls = BDCR_CMD_STREAM_IDENTIFY;
485 cbd.status_flags = 0;
486
487 data_size = sizeof(struct streamid_data);
488 si_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
489 cbd.length = cpu_to_le16(data_size);
490
491 dma = dma_map_single(&priv->si->pdev->dev, si_data,
492 data_size, DMA_FROM_DEVICE);
493 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
494 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
495 kfree(si_data);
496 return -ENOMEM;
497 }
498
499 cbd.addr[0] = lower_32_bits(dma);
500 cbd.addr[1] = upper_32_bits(dma);
501 eth_broadcast_addr(si_data->dmac);
502 si_data->vid_vidm_tg =
503 cpu_to_le16(ENETC_CBDR_SID_VID_MASK
504 + ((0x3 << 14) | ENETC_CBDR_SID_VIDM));
505
506 si_conf = &cbd.sid_set;
507 /* Only one port supported for one entry, set itself */
508 si_conf->iports = 1 << enetc_get_port(priv);
509 si_conf->id_type = 1;
510 si_conf->oui[2] = 0x0;
511 si_conf->oui[1] = 0x80;
512 si_conf->oui[0] = 0xC2;
513
514 err = enetc_send_cmd(priv->si, &cbd);
515 if (err)
516 return -EINVAL;
517
518 if (!enable) {
519 kfree(si_data);
520 return 0;
521 }
522
523 /* Enable the entry overwrite again incase space flushed by hardware */
524 memset(&cbd, 0, sizeof(cbd));
525
526 cbd.index = cpu_to_le16((u16)sid->index);
527 cbd.cmd = 0;
528 cbd.cls = BDCR_CMD_STREAM_IDENTIFY;
529 cbd.status_flags = 0;
530
531 si_conf->en = 0x80;
532 si_conf->stream_handle = cpu_to_le32(sid->handle);
533 si_conf->iports = 1 << enetc_get_port(priv);
534 si_conf->id_type = sid->filtertype;
535 si_conf->oui[2] = 0x0;
536 si_conf->oui[1] = 0x80;
537 si_conf->oui[0] = 0xC2;
538
539 memset(si_data, 0, data_size);
540
541 cbd.length = cpu_to_le16(data_size);
542
543 cbd.addr[0] = lower_32_bits(dma);
544 cbd.addr[1] = upper_32_bits(dma);
545
546 /* VIDM default to be 1.
547 * VID Match. If set (b1) then the VID must match, otherwise
548 * any VID is considered a match. VIDM setting is only used
549 * when TG is set to b01.
550 */
551 if (si_conf->id_type == STREAMID_TYPE_NULL) {
552 ether_addr_copy(si_data->dmac, sid->dst_mac);
553 si_data->vid_vidm_tg =
554 cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) +
555 ((((u16)(sid->tagged) & 0x3) << 14)
556 | ENETC_CBDR_SID_VIDM));
557 } else if (si_conf->id_type == STREAMID_TYPE_SMAC) {
558 ether_addr_copy(si_data->smac, sid->src_mac);
559 si_data->vid_vidm_tg =
560 cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) +
561 ((((u16)(sid->tagged) & 0x3) << 14)
562 | ENETC_CBDR_SID_VIDM));
563 }
564
565 err = enetc_send_cmd(priv->si, &cbd);
566 kfree(si_data);
567
568 return err;
569 }
570
571 /* Stream Filter Instance Set Descriptor */
enetc_streamfilter_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_filter * sfi,u8 enable)572 static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv,
573 struct enetc_psfp_filter *sfi,
574 u8 enable)
575 {
576 struct enetc_cbd cbd = {.cmd = 0};
577 struct sfi_conf *sfi_config;
578
579 cbd.index = cpu_to_le16(sfi->index);
580 cbd.cls = BDCR_CMD_STREAM_FILTER;
581 cbd.status_flags = 0x80;
582 cbd.length = cpu_to_le16(1);
583
584 sfi_config = &cbd.sfi_conf;
585 if (!enable)
586 goto exit;
587
588 sfi_config->en = 0x80;
589
590 if (sfi->handle >= 0) {
591 sfi_config->stream_handle =
592 cpu_to_le32(sfi->handle);
593 sfi_config->sthm |= 0x80;
594 }
595
596 sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id);
597 sfi_config->input_ports = 1 << enetc_get_port(priv);
598
599 /* The priority value which may be matched against the
600 * frame’s priority value to determine a match for this entry.
601 */
602 if (sfi->prio >= 0)
603 sfi_config->multi |= (sfi->prio & 0x7) | 0x8;
604
605 /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX
606 * field as being either an MSDU value or an index into the Flow
607 * Meter Instance table.
608 */
609 if (sfi->maxsdu) {
610 sfi_config->msdu =
611 cpu_to_le16(sfi->maxsdu);
612 sfi_config->multi |= 0x40;
613 }
614
615 if (sfi->meter_id >= 0) {
616 sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id);
617 sfi_config->multi |= 0x80;
618 }
619
620 exit:
621 return enetc_send_cmd(priv->si, &cbd);
622 }
623
enetc_streamcounter_hw_get(struct enetc_ndev_priv * priv,u32 index,struct psfp_streamfilter_counters * cnt)624 static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv,
625 u32 index,
626 struct psfp_streamfilter_counters *cnt)
627 {
628 struct enetc_cbd cbd = { .cmd = 2 };
629 struct sfi_counter_data *data_buf;
630 dma_addr_t dma;
631 u16 data_size;
632 int err;
633
634 cbd.index = cpu_to_le16((u16)index);
635 cbd.cmd = 2;
636 cbd.cls = BDCR_CMD_STREAM_FILTER;
637 cbd.status_flags = 0;
638
639 data_size = sizeof(struct sfi_counter_data);
640 data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
641 if (!data_buf)
642 return -ENOMEM;
643
644 dma = dma_map_single(&priv->si->pdev->dev, data_buf,
645 data_size, DMA_FROM_DEVICE);
646 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
647 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
648 err = -ENOMEM;
649 goto exit;
650 }
651 cbd.addr[0] = lower_32_bits(dma);
652 cbd.addr[1] = upper_32_bits(dma);
653
654 cbd.length = cpu_to_le16(data_size);
655
656 err = enetc_send_cmd(priv->si, &cbd);
657 if (err)
658 goto exit;
659
660 cnt->matching_frames_count =
661 ((u64)le32_to_cpu(data_buf->matchh) << 32)
662 + data_buf->matchl;
663
664 cnt->not_passing_sdu_count =
665 ((u64)le32_to_cpu(data_buf->msdu_droph) << 32)
666 + data_buf->msdu_dropl;
667
668 cnt->passing_sdu_count = cnt->matching_frames_count
669 - cnt->not_passing_sdu_count;
670
671 cnt->not_passing_frames_count =
672 ((u64)le32_to_cpu(data_buf->stream_gate_droph) << 32)
673 + le32_to_cpu(data_buf->stream_gate_dropl);
674
675 cnt->passing_frames_count = cnt->matching_frames_count
676 - cnt->not_passing_sdu_count
677 - cnt->not_passing_frames_count;
678
679 cnt->red_frames_count =
680 ((u64)le32_to_cpu(data_buf->flow_meter_droph) << 32)
681 + le32_to_cpu(data_buf->flow_meter_dropl);
682
683 exit:
684 kfree(data_buf);
685 return err;
686 }
687
get_ptp_now(struct enetc_hw * hw)688 static u64 get_ptp_now(struct enetc_hw *hw)
689 {
690 u64 now_lo, now_hi, now;
691
692 now_lo = enetc_rd(hw, ENETC_SICTR0);
693 now_hi = enetc_rd(hw, ENETC_SICTR1);
694 now = now_lo | now_hi << 32;
695
696 return now;
697 }
698
get_start_ns(u64 now,u64 cycle,u64 * start)699 static int get_start_ns(u64 now, u64 cycle, u64 *start)
700 {
701 u64 n;
702
703 if (!cycle)
704 return -EFAULT;
705
706 n = div64_u64(now, cycle);
707
708 *start = (n + 1) * cycle;
709
710 return 0;
711 }
712
713 /* Stream Gate Instance Set Descriptor */
enetc_streamgate_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_gate * sgi,u8 enable)714 static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv,
715 struct enetc_psfp_gate *sgi,
716 u8 enable)
717 {
718 struct enetc_cbd cbd = { .cmd = 0 };
719 struct sgi_table *sgi_config;
720 struct sgcl_conf *sgcl_config;
721 struct sgcl_data *sgcl_data;
722 struct sgce *sgce;
723 dma_addr_t dma;
724 u16 data_size;
725 int err, i;
726 u64 now;
727
728 cbd.index = cpu_to_le16(sgi->index);
729 cbd.cmd = 0;
730 cbd.cls = BDCR_CMD_STREAM_GCL;
731 cbd.status_flags = 0x80;
732
733 /* disable */
734 if (!enable)
735 return enetc_send_cmd(priv->si, &cbd);
736
737 if (!sgi->num_entries)
738 return 0;
739
740 if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist ||
741 !sgi->cycletime)
742 return -EINVAL;
743
744 /* enable */
745 sgi_config = &cbd.sgi_table;
746
747 /* Keep open before gate list start */
748 sgi_config->ocgtst = 0x80;
749
750 sgi_config->oipv = (sgi->init_ipv < 0) ?
751 0x0 : ((sgi->init_ipv & 0x7) | 0x8);
752
753 sgi_config->en = 0x80;
754
755 /* Basic config */
756 err = enetc_send_cmd(priv->si, &cbd);
757 if (err)
758 return -EINVAL;
759
760 memset(&cbd, 0, sizeof(cbd));
761
762 cbd.index = cpu_to_le16(sgi->index);
763 cbd.cmd = 1;
764 cbd.cls = BDCR_CMD_STREAM_GCL;
765 cbd.status_flags = 0;
766
767 sgcl_config = &cbd.sgcl_conf;
768
769 sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3;
770
771 data_size = struct_size(sgcl_data, sgcl, sgi->num_entries);
772
773 sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
774 if (!sgcl_data)
775 return -ENOMEM;
776
777 cbd.length = cpu_to_le16(data_size);
778
779 dma = dma_map_single(&priv->si->pdev->dev,
780 sgcl_data, data_size,
781 DMA_FROM_DEVICE);
782 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
783 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
784 kfree(sgcl_data);
785 return -ENOMEM;
786 }
787
788 cbd.addr[0] = lower_32_bits(dma);
789 cbd.addr[1] = upper_32_bits(dma);
790
791 sgce = &sgcl_data->sgcl[0];
792
793 sgcl_config->agtst = 0x80;
794
795 sgcl_data->ct = cpu_to_le32(sgi->cycletime);
796 sgcl_data->cte = cpu_to_le32(sgi->cycletimext);
797
798 if (sgi->init_ipv >= 0)
799 sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8;
800
801 for (i = 0; i < sgi->num_entries; i++) {
802 struct action_gate_entry *from = &sgi->entries[i];
803 struct sgce *to = &sgce[i];
804
805 if (from->gate_state)
806 to->multi |= 0x10;
807
808 if (from->ipv >= 0)
809 to->multi |= ((from->ipv & 0x7) << 5) | 0x08;
810
811 if (from->maxoctets >= 0) {
812 to->multi |= 0x01;
813 to->msdu[0] = from->maxoctets & 0xFF;
814 to->msdu[1] = (from->maxoctets >> 8) & 0xFF;
815 to->msdu[2] = (from->maxoctets >> 16) & 0xFF;
816 }
817
818 to->interval = cpu_to_le32(from->interval);
819 }
820
821 /* If basetime is less than now, calculate start time */
822 now = get_ptp_now(&priv->si->hw);
823
824 if (sgi->basetime < now) {
825 u64 start;
826
827 err = get_start_ns(now, sgi->cycletime, &start);
828 if (err)
829 goto exit;
830 sgcl_data->btl = cpu_to_le32(lower_32_bits(start));
831 sgcl_data->bth = cpu_to_le32(upper_32_bits(start));
832 } else {
833 u32 hi, lo;
834
835 hi = upper_32_bits(sgi->basetime);
836 lo = lower_32_bits(sgi->basetime);
837 sgcl_data->bth = cpu_to_le32(hi);
838 sgcl_data->btl = cpu_to_le32(lo);
839 }
840
841 err = enetc_send_cmd(priv->si, &cbd);
842
843 exit:
844 kfree(sgcl_data);
845
846 return err;
847 }
848
enetc_flowmeter_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_meter * fmi,u8 enable)849 static int enetc_flowmeter_hw_set(struct enetc_ndev_priv *priv,
850 struct enetc_psfp_meter *fmi,
851 u8 enable)
852 {
853 struct enetc_cbd cbd = { .cmd = 0 };
854 struct fmi_conf *fmi_config;
855 u64 temp = 0;
856
857 cbd.index = cpu_to_le16((u16)fmi->index);
858 cbd.cls = BDCR_CMD_FLOW_METER;
859 cbd.status_flags = 0x80;
860
861 if (!enable)
862 return enetc_send_cmd(priv->si, &cbd);
863
864 fmi_config = &cbd.fmi_conf;
865 fmi_config->en = 0x80;
866
867 if (fmi->cir) {
868 temp = (u64)8000 * fmi->cir;
869 temp = div_u64(temp, 3725);
870 }
871
872 fmi_config->cir = cpu_to_le32((u32)temp);
873 fmi_config->cbs = cpu_to_le32(fmi->cbs);
874
875 /* Default for eir ebs disable */
876 fmi_config->eir = 0;
877 fmi_config->ebs = 0;
878
879 /* Default:
880 * mark red disable
881 * drop on yellow disable
882 * color mode disable
883 * couple flag disable
884 */
885 fmi_config->conf = 0;
886
887 return enetc_send_cmd(priv->si, &cbd);
888 }
889
enetc_get_stream_by_index(u32 index)890 static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index)
891 {
892 struct enetc_stream_filter *f;
893
894 hlist_for_each_entry(f, &epsfp.stream_list, node)
895 if (f->sid.index == index)
896 return f;
897
898 return NULL;
899 }
900
enetc_get_gate_by_index(u32 index)901 static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index)
902 {
903 struct enetc_psfp_gate *g;
904
905 hlist_for_each_entry(g, &epsfp.psfp_gate_list, node)
906 if (g->index == index)
907 return g;
908
909 return NULL;
910 }
911
enetc_get_filter_by_index(u32 index)912 static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index)
913 {
914 struct enetc_psfp_filter *s;
915
916 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
917 if (s->index == index)
918 return s;
919
920 return NULL;
921 }
922
enetc_get_meter_by_index(u32 index)923 static struct enetc_psfp_meter *enetc_get_meter_by_index(u32 index)
924 {
925 struct enetc_psfp_meter *m;
926
927 hlist_for_each_entry(m, &epsfp.psfp_meter_list, node)
928 if (m->index == index)
929 return m;
930
931 return NULL;
932 }
933
934 static struct enetc_psfp_filter
enetc_psfp_check_sfi(struct enetc_psfp_filter * sfi)935 *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi)
936 {
937 struct enetc_psfp_filter *s;
938
939 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
940 if (s->gate_id == sfi->gate_id &&
941 s->prio == sfi->prio &&
942 s->maxsdu == sfi->maxsdu &&
943 s->meter_id == sfi->meter_id)
944 return s;
945
946 return NULL;
947 }
948
enetc_get_free_index(struct enetc_ndev_priv * priv)949 static int enetc_get_free_index(struct enetc_ndev_priv *priv)
950 {
951 u32 max_size = priv->psfp_cap.max_psfp_filter;
952 unsigned long index;
953
954 index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size);
955 if (index == max_size)
956 return -1;
957
958 return index;
959 }
960
stream_filter_unref(struct enetc_ndev_priv * priv,u32 index)961 static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index)
962 {
963 struct enetc_psfp_filter *sfi;
964 u8 z;
965
966 sfi = enetc_get_filter_by_index(index);
967 WARN_ON(!sfi);
968 z = refcount_dec_and_test(&sfi->refcount);
969
970 if (z) {
971 enetc_streamfilter_hw_set(priv, sfi, false);
972 hlist_del(&sfi->node);
973 kfree(sfi);
974 clear_bit(index, epsfp.psfp_sfi_bitmap);
975 }
976 }
977
stream_gate_unref(struct enetc_ndev_priv * priv,u32 index)978 static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index)
979 {
980 struct enetc_psfp_gate *sgi;
981 u8 z;
982
983 sgi = enetc_get_gate_by_index(index);
984 WARN_ON(!sgi);
985 z = refcount_dec_and_test(&sgi->refcount);
986 if (z) {
987 enetc_streamgate_hw_set(priv, sgi, false);
988 hlist_del(&sgi->node);
989 kfree(sgi);
990 }
991 }
992
flow_meter_unref(struct enetc_ndev_priv * priv,u32 index)993 static void flow_meter_unref(struct enetc_ndev_priv *priv, u32 index)
994 {
995 struct enetc_psfp_meter *fmi;
996 u8 z;
997
998 fmi = enetc_get_meter_by_index(index);
999 WARN_ON(!fmi);
1000 z = refcount_dec_and_test(&fmi->refcount);
1001 if (z) {
1002 enetc_flowmeter_hw_set(priv, fmi, false);
1003 hlist_del(&fmi->node);
1004 kfree(fmi);
1005 }
1006 }
1007
remove_one_chain(struct enetc_ndev_priv * priv,struct enetc_stream_filter * filter)1008 static void remove_one_chain(struct enetc_ndev_priv *priv,
1009 struct enetc_stream_filter *filter)
1010 {
1011 if (filter->flags & ENETC_PSFP_FLAGS_FMI)
1012 flow_meter_unref(priv, filter->fmi_index);
1013
1014 stream_gate_unref(priv, filter->sgi_index);
1015 stream_filter_unref(priv, filter->sfi_index);
1016
1017 hlist_del(&filter->node);
1018 kfree(filter);
1019 }
1020
enetc_psfp_hw_set(struct enetc_ndev_priv * priv,struct enetc_streamid * sid,struct enetc_psfp_filter * sfi,struct enetc_psfp_gate * sgi,struct enetc_psfp_meter * fmi)1021 static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv,
1022 struct enetc_streamid *sid,
1023 struct enetc_psfp_filter *sfi,
1024 struct enetc_psfp_gate *sgi,
1025 struct enetc_psfp_meter *fmi)
1026 {
1027 int err;
1028
1029 err = enetc_streamid_hw_set(priv, sid, true);
1030 if (err)
1031 return err;
1032
1033 if (sfi) {
1034 err = enetc_streamfilter_hw_set(priv, sfi, true);
1035 if (err)
1036 goto revert_sid;
1037 }
1038
1039 err = enetc_streamgate_hw_set(priv, sgi, true);
1040 if (err)
1041 goto revert_sfi;
1042
1043 if (fmi) {
1044 err = enetc_flowmeter_hw_set(priv, fmi, true);
1045 if (err)
1046 goto revert_sgi;
1047 }
1048
1049 return 0;
1050
1051 revert_sgi:
1052 enetc_streamgate_hw_set(priv, sgi, false);
1053 revert_sfi:
1054 if (sfi)
1055 enetc_streamfilter_hw_set(priv, sfi, false);
1056 revert_sid:
1057 enetc_streamid_hw_set(priv, sid, false);
1058 return err;
1059 }
1060
enetc_check_flow_actions(u64 acts,unsigned int inputkeys)1061 static struct actions_fwd *enetc_check_flow_actions(u64 acts,
1062 unsigned int inputkeys)
1063 {
1064 int i;
1065
1066 for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++)
1067 if (acts == enetc_act_fwd[i].actions &&
1068 inputkeys & enetc_act_fwd[i].keys)
1069 return &enetc_act_fwd[i];
1070
1071 return NULL;
1072 }
1073
enetc_psfp_parse_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1074 static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv,
1075 struct flow_cls_offload *f)
1076 {
1077 struct flow_action_entry *entryg = NULL, *entryp = NULL;
1078 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1079 struct netlink_ext_ack *extack = f->common.extack;
1080 struct enetc_stream_filter *filter, *old_filter;
1081 struct enetc_psfp_meter *fmi = NULL, *old_fmi;
1082 struct enetc_psfp_filter *sfi, *old_sfi;
1083 struct enetc_psfp_gate *sgi, *old_sgi;
1084 struct flow_action_entry *entry;
1085 struct action_gate_entry *e;
1086 u8 sfi_overwrite = 0;
1087 int entries_size;
1088 int i, err;
1089
1090 if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
1091 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
1092 return -ENOSPC;
1093 }
1094
1095 flow_action_for_each(i, entry, &rule->action)
1096 if (entry->id == FLOW_ACTION_GATE)
1097 entryg = entry;
1098 else if (entry->id == FLOW_ACTION_POLICE)
1099 entryp = entry;
1100
1101 /* Not support without gate action */
1102 if (!entryg)
1103 return -EINVAL;
1104
1105 filter = kzalloc(sizeof(*filter), GFP_KERNEL);
1106 if (!filter)
1107 return -ENOMEM;
1108
1109 filter->sid.index = f->common.chain_index;
1110
1111 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1112 struct flow_match_eth_addrs match;
1113
1114 flow_rule_match_eth_addrs(rule, &match);
1115
1116 if (!is_zero_ether_addr(match.mask->dst) &&
1117 !is_zero_ether_addr(match.mask->src)) {
1118 NL_SET_ERR_MSG_MOD(extack,
1119 "Cannot match on both source and destination MAC");
1120 err = -EINVAL;
1121 goto free_filter;
1122 }
1123
1124 if (!is_zero_ether_addr(match.mask->dst)) {
1125 if (!is_broadcast_ether_addr(match.mask->dst)) {
1126 NL_SET_ERR_MSG_MOD(extack,
1127 "Masked matching on destination MAC not supported");
1128 err = -EINVAL;
1129 goto free_filter;
1130 }
1131 ether_addr_copy(filter->sid.dst_mac, match.key->dst);
1132 filter->sid.filtertype = STREAMID_TYPE_NULL;
1133 }
1134
1135 if (!is_zero_ether_addr(match.mask->src)) {
1136 if (!is_broadcast_ether_addr(match.mask->src)) {
1137 NL_SET_ERR_MSG_MOD(extack,
1138 "Masked matching on source MAC not supported");
1139 err = -EINVAL;
1140 goto free_filter;
1141 }
1142 ether_addr_copy(filter->sid.src_mac, match.key->src);
1143 filter->sid.filtertype = STREAMID_TYPE_SMAC;
1144 }
1145 } else {
1146 NL_SET_ERR_MSG_MOD(extack, "Unsupported, must include ETH_ADDRS");
1147 err = -EINVAL;
1148 goto free_filter;
1149 }
1150
1151 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
1152 struct flow_match_vlan match;
1153
1154 flow_rule_match_vlan(rule, &match);
1155 if (match.mask->vlan_priority) {
1156 if (match.mask->vlan_priority !=
1157 (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) {
1158 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority");
1159 err = -EINVAL;
1160 goto free_filter;
1161 }
1162 }
1163
1164 if (match.mask->vlan_id) {
1165 if (match.mask->vlan_id != VLAN_VID_MASK) {
1166 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id");
1167 err = -EINVAL;
1168 goto free_filter;
1169 }
1170
1171 filter->sid.vid = match.key->vlan_id;
1172 if (!filter->sid.vid)
1173 filter->sid.tagged = STREAMID_VLAN_UNTAGGED;
1174 else
1175 filter->sid.tagged = STREAMID_VLAN_TAGGED;
1176 }
1177 } else {
1178 filter->sid.tagged = STREAMID_VLAN_ALL;
1179 }
1180
1181 /* parsing gate action */
1182 if (entryg->gate.index >= priv->psfp_cap.max_psfp_gate) {
1183 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
1184 err = -ENOSPC;
1185 goto free_filter;
1186 }
1187
1188 if (entryg->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) {
1189 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
1190 err = -ENOSPC;
1191 goto free_filter;
1192 }
1193
1194 entries_size = struct_size(sgi, entries, entryg->gate.num_entries);
1195 sgi = kzalloc(entries_size, GFP_KERNEL);
1196 if (!sgi) {
1197 err = -ENOMEM;
1198 goto free_filter;
1199 }
1200
1201 refcount_set(&sgi->refcount, 1);
1202 sgi->index = entryg->gate.index;
1203 sgi->init_ipv = entryg->gate.prio;
1204 sgi->basetime = entryg->gate.basetime;
1205 sgi->cycletime = entryg->gate.cycletime;
1206 sgi->num_entries = entryg->gate.num_entries;
1207
1208 e = sgi->entries;
1209 for (i = 0; i < entryg->gate.num_entries; i++) {
1210 e[i].gate_state = entryg->gate.entries[i].gate_state;
1211 e[i].interval = entryg->gate.entries[i].interval;
1212 e[i].ipv = entryg->gate.entries[i].ipv;
1213 e[i].maxoctets = entryg->gate.entries[i].maxoctets;
1214 }
1215
1216 filter->sgi_index = sgi->index;
1217
1218 sfi = kzalloc(sizeof(*sfi), GFP_KERNEL);
1219 if (!sfi) {
1220 err = -ENOMEM;
1221 goto free_gate;
1222 }
1223
1224 refcount_set(&sfi->refcount, 1);
1225 sfi->gate_id = sgi->index;
1226 sfi->meter_id = ENETC_PSFP_WILDCARD;
1227
1228 /* Flow meter and max frame size */
1229 if (entryp) {
1230 if (entryp->police.burst) {
1231 fmi = kzalloc(sizeof(*fmi), GFP_KERNEL);
1232 if (!fmi) {
1233 err = -ENOMEM;
1234 goto free_sfi;
1235 }
1236 refcount_set(&fmi->refcount, 1);
1237 fmi->cir = entryp->police.rate_bytes_ps;
1238 fmi->cbs = entryp->police.burst;
1239 fmi->index = entryp->police.index;
1240 filter->flags |= ENETC_PSFP_FLAGS_FMI;
1241 filter->fmi_index = fmi->index;
1242 sfi->meter_id = fmi->index;
1243 }
1244
1245 if (entryp->police.mtu)
1246 sfi->maxsdu = entryp->police.mtu;
1247 }
1248
1249 /* prio ref the filter prio */
1250 if (f->common.prio && f->common.prio <= BIT(3))
1251 sfi->prio = f->common.prio - 1;
1252 else
1253 sfi->prio = ENETC_PSFP_WILDCARD;
1254
1255 old_sfi = enetc_psfp_check_sfi(sfi);
1256 if (!old_sfi) {
1257 int index;
1258
1259 index = enetc_get_free_index(priv);
1260 if (sfi->handle < 0) {
1261 NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!");
1262 err = -ENOSPC;
1263 goto free_fmi;
1264 }
1265
1266 sfi->index = index;
1267 sfi->handle = index + HANDLE_OFFSET;
1268 /* Update the stream filter handle also */
1269 filter->sid.handle = sfi->handle;
1270 filter->sfi_index = sfi->index;
1271 sfi_overwrite = 0;
1272 } else {
1273 filter->sfi_index = old_sfi->index;
1274 filter->sid.handle = old_sfi->handle;
1275 sfi_overwrite = 1;
1276 }
1277
1278 err = enetc_psfp_hw_set(priv, &filter->sid,
1279 sfi_overwrite ? NULL : sfi, sgi, fmi);
1280 if (err)
1281 goto free_fmi;
1282
1283 spin_lock(&epsfp.psfp_lock);
1284 if (filter->flags & ENETC_PSFP_FLAGS_FMI) {
1285 old_fmi = enetc_get_meter_by_index(filter->fmi_index);
1286 if (old_fmi) {
1287 fmi->refcount = old_fmi->refcount;
1288 refcount_set(&fmi->refcount,
1289 refcount_read(&old_fmi->refcount) + 1);
1290 hlist_del(&old_fmi->node);
1291 kfree(old_fmi);
1292 }
1293 hlist_add_head(&fmi->node, &epsfp.psfp_meter_list);
1294 }
1295
1296 /* Remove the old node if exist and update with a new node */
1297 old_sgi = enetc_get_gate_by_index(filter->sgi_index);
1298 if (old_sgi) {
1299 refcount_set(&sgi->refcount,
1300 refcount_read(&old_sgi->refcount) + 1);
1301 hlist_del(&old_sgi->node);
1302 kfree(old_sgi);
1303 }
1304
1305 hlist_add_head(&sgi->node, &epsfp.psfp_gate_list);
1306
1307 if (!old_sfi) {
1308 hlist_add_head(&sfi->node, &epsfp.psfp_filter_list);
1309 set_bit(sfi->index, epsfp.psfp_sfi_bitmap);
1310 } else {
1311 kfree(sfi);
1312 refcount_inc(&old_sfi->refcount);
1313 }
1314
1315 old_filter = enetc_get_stream_by_index(filter->sid.index);
1316 if (old_filter)
1317 remove_one_chain(priv, old_filter);
1318
1319 filter->stats.lastused = jiffies;
1320 hlist_add_head(&filter->node, &epsfp.stream_list);
1321
1322 spin_unlock(&epsfp.psfp_lock);
1323
1324 return 0;
1325
1326 free_fmi:
1327 kfree(fmi);
1328 free_sfi:
1329 kfree(sfi);
1330 free_gate:
1331 kfree(sgi);
1332 free_filter:
1333 kfree(filter);
1334
1335 return err;
1336 }
1337
enetc_config_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * cls_flower)1338 static int enetc_config_clsflower(struct enetc_ndev_priv *priv,
1339 struct flow_cls_offload *cls_flower)
1340 {
1341 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
1342 struct netlink_ext_ack *extack = cls_flower->common.extack;
1343 struct flow_dissector *dissector = rule->match.dissector;
1344 struct flow_action *action = &rule->action;
1345 struct flow_action_entry *entry;
1346 struct actions_fwd *fwd;
1347 u64 actions = 0;
1348 int i, err;
1349
1350 if (!flow_action_has_entries(action)) {
1351 NL_SET_ERR_MSG_MOD(extack, "At least one action is needed");
1352 return -EINVAL;
1353 }
1354
1355 flow_action_for_each(i, entry, action)
1356 actions |= BIT(entry->id);
1357
1358 fwd = enetc_check_flow_actions(actions, dissector->used_keys);
1359 if (!fwd) {
1360 NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!");
1361 return -EOPNOTSUPP;
1362 }
1363
1364 if (fwd->output & FILTER_ACTION_TYPE_PSFP) {
1365 err = enetc_psfp_parse_clsflower(priv, cls_flower);
1366 if (err) {
1367 NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs");
1368 return err;
1369 }
1370 } else {
1371 NL_SET_ERR_MSG_MOD(extack, "Unsupported actions");
1372 return -EOPNOTSUPP;
1373 }
1374
1375 return 0;
1376 }
1377
enetc_psfp_destroy_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1378 static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv,
1379 struct flow_cls_offload *f)
1380 {
1381 struct enetc_stream_filter *filter;
1382 struct netlink_ext_ack *extack = f->common.extack;
1383 int err;
1384
1385 if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
1386 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
1387 return -ENOSPC;
1388 }
1389
1390 filter = enetc_get_stream_by_index(f->common.chain_index);
1391 if (!filter)
1392 return -EINVAL;
1393
1394 err = enetc_streamid_hw_set(priv, &filter->sid, false);
1395 if (err)
1396 return err;
1397
1398 remove_one_chain(priv, filter);
1399
1400 return 0;
1401 }
1402
enetc_destroy_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1403 static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv,
1404 struct flow_cls_offload *f)
1405 {
1406 return enetc_psfp_destroy_clsflower(priv, f);
1407 }
1408
enetc_psfp_get_stats(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1409 static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv,
1410 struct flow_cls_offload *f)
1411 {
1412 struct psfp_streamfilter_counters counters = {};
1413 struct enetc_stream_filter *filter;
1414 struct flow_stats stats = {};
1415 int err;
1416
1417 filter = enetc_get_stream_by_index(f->common.chain_index);
1418 if (!filter)
1419 return -EINVAL;
1420
1421 err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters);
1422 if (err)
1423 return -EINVAL;
1424
1425 spin_lock(&epsfp.psfp_lock);
1426 stats.pkts = counters.matching_frames_count +
1427 counters.not_passing_sdu_count -
1428 filter->stats.pkts;
1429 stats.drops = counters.not_passing_frames_count +
1430 counters.not_passing_sdu_count +
1431 counters.red_frames_count -
1432 filter->stats.drops;
1433 stats.lastused = filter->stats.lastused;
1434 filter->stats.pkts += stats.pkts;
1435 filter->stats.drops += stats.drops;
1436 spin_unlock(&epsfp.psfp_lock);
1437
1438 flow_stats_update(&f->stats, 0x0, stats.pkts, stats.drops,
1439 stats.lastused, FLOW_ACTION_HW_STATS_DELAYED);
1440
1441 return 0;
1442 }
1443
enetc_setup_tc_cls_flower(struct enetc_ndev_priv * priv,struct flow_cls_offload * cls_flower)1444 static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv,
1445 struct flow_cls_offload *cls_flower)
1446 {
1447 switch (cls_flower->command) {
1448 case FLOW_CLS_REPLACE:
1449 return enetc_config_clsflower(priv, cls_flower);
1450 case FLOW_CLS_DESTROY:
1451 return enetc_destroy_clsflower(priv, cls_flower);
1452 case FLOW_CLS_STATS:
1453 return enetc_psfp_get_stats(priv, cls_flower);
1454 default:
1455 return -EOPNOTSUPP;
1456 }
1457 }
1458
clean_psfp_sfi_bitmap(void)1459 static inline void clean_psfp_sfi_bitmap(void)
1460 {
1461 bitmap_free(epsfp.psfp_sfi_bitmap);
1462 epsfp.psfp_sfi_bitmap = NULL;
1463 }
1464
clean_stream_list(void)1465 static void clean_stream_list(void)
1466 {
1467 struct enetc_stream_filter *s;
1468 struct hlist_node *tmp;
1469
1470 hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) {
1471 hlist_del(&s->node);
1472 kfree(s);
1473 }
1474 }
1475
clean_sfi_list(void)1476 static void clean_sfi_list(void)
1477 {
1478 struct enetc_psfp_filter *sfi;
1479 struct hlist_node *tmp;
1480
1481 hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) {
1482 hlist_del(&sfi->node);
1483 kfree(sfi);
1484 }
1485 }
1486
clean_sgi_list(void)1487 static void clean_sgi_list(void)
1488 {
1489 struct enetc_psfp_gate *sgi;
1490 struct hlist_node *tmp;
1491
1492 hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) {
1493 hlist_del(&sgi->node);
1494 kfree(sgi);
1495 }
1496 }
1497
clean_psfp_all(void)1498 static void clean_psfp_all(void)
1499 {
1500 /* Disable all list nodes and free all memory */
1501 clean_sfi_list();
1502 clean_sgi_list();
1503 clean_stream_list();
1504 epsfp.dev_bitmap = 0;
1505 clean_psfp_sfi_bitmap();
1506 }
1507
enetc_setup_tc_block_cb(enum tc_setup_type type,void * type_data,void * cb_priv)1508 int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
1509 void *cb_priv)
1510 {
1511 struct net_device *ndev = cb_priv;
1512
1513 if (!tc_can_offload(ndev))
1514 return -EOPNOTSUPP;
1515
1516 switch (type) {
1517 case TC_SETUP_CLSFLOWER:
1518 return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data);
1519 default:
1520 return -EOPNOTSUPP;
1521 }
1522 }
1523
enetc_psfp_init(struct enetc_ndev_priv * priv)1524 int enetc_psfp_init(struct enetc_ndev_priv *priv)
1525 {
1526 if (epsfp.psfp_sfi_bitmap)
1527 return 0;
1528
1529 epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter,
1530 GFP_KERNEL);
1531 if (!epsfp.psfp_sfi_bitmap)
1532 return -ENOMEM;
1533
1534 spin_lock_init(&epsfp.psfp_lock);
1535
1536 if (list_empty(&enetc_block_cb_list))
1537 epsfp.dev_bitmap = 0;
1538
1539 return 0;
1540 }
1541
enetc_psfp_clean(struct enetc_ndev_priv * priv)1542 int enetc_psfp_clean(struct enetc_ndev_priv *priv)
1543 {
1544 if (!list_empty(&enetc_block_cb_list))
1545 return -EBUSY;
1546
1547 clean_psfp_all();
1548
1549 return 0;
1550 }
1551
enetc_setup_tc_psfp(struct net_device * ndev,void * type_data)1552 int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data)
1553 {
1554 struct enetc_ndev_priv *priv = netdev_priv(ndev);
1555 struct flow_block_offload *f = type_data;
1556 int err;
1557
1558 err = flow_block_cb_setup_simple(f, &enetc_block_cb_list,
1559 enetc_setup_tc_block_cb,
1560 ndev, ndev, true);
1561 if (err)
1562 return err;
1563
1564 switch (f->command) {
1565 case FLOW_BLOCK_BIND:
1566 set_bit(enetc_get_port(priv), &epsfp.dev_bitmap);
1567 break;
1568 case FLOW_BLOCK_UNBIND:
1569 clear_bit(enetc_get_port(priv), &epsfp.dev_bitmap);
1570 if (!epsfp.dev_bitmap)
1571 clean_psfp_all();
1572 break;
1573 }
1574
1575 return 0;
1576 }
1577
