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] = cpu_to_le32(lower_32_bits(dma));
122 cbd.addr[1] = cpu_to_le32(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
458 /* Stream Identity Entry Set Descriptor */
enetc_streamid_hw_set(struct enetc_ndev_priv * priv,struct enetc_streamid * sid,u8 enable)459 static int enetc_streamid_hw_set(struct enetc_ndev_priv *priv,
460 struct enetc_streamid *sid,
461 u8 enable)
462 {
463 struct enetc_cbd cbd = {.cmd = 0};
464 struct streamid_data *si_data;
465 struct streamid_conf *si_conf;
466 u16 data_size;
467 dma_addr_t dma;
468 int port;
469 int err;
470
471 port = enetc_pf_to_port(priv->si->pdev);
472 if (port < 0)
473 return -EINVAL;
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] = cpu_to_le32(lower_32_bits(dma));
500 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma));
501 eth_broadcast_addr(si_data->dmac);
502 si_data->vid_vidm_tg = (ENETC_CBDR_SID_VID_MASK
503 + ((0x3 << 14) | ENETC_CBDR_SID_VIDM));
504
505 si_conf = &cbd.sid_set;
506 /* Only one port supported for one entry, set itself */
507 si_conf->iports = cpu_to_le32(1 << port);
508 si_conf->id_type = 1;
509 si_conf->oui[2] = 0x0;
510 si_conf->oui[1] = 0x80;
511 si_conf->oui[0] = 0xC2;
512
513 err = enetc_send_cmd(priv->si, &cbd);
514 if (err)
515 return -EINVAL;
516
517 if (!enable) {
518 kfree(si_data);
519 return 0;
520 }
521
522 /* Enable the entry overwrite again incase space flushed by hardware */
523 memset(&cbd, 0, sizeof(cbd));
524
525 cbd.index = cpu_to_le16((u16)sid->index);
526 cbd.cmd = 0;
527 cbd.cls = BDCR_CMD_STREAM_IDENTIFY;
528 cbd.status_flags = 0;
529
530 si_conf->en = 0x80;
531 si_conf->stream_handle = cpu_to_le32(sid->handle);
532 si_conf->iports = cpu_to_le32(1 << port);
533 si_conf->id_type = sid->filtertype;
534 si_conf->oui[2] = 0x0;
535 si_conf->oui[1] = 0x80;
536 si_conf->oui[0] = 0xC2;
537
538 memset(si_data, 0, data_size);
539
540 cbd.length = cpu_to_le16(data_size);
541
542 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma));
543 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma));
544
545 /* VIDM default to be 1.
546 * VID Match. If set (b1) then the VID must match, otherwise
547 * any VID is considered a match. VIDM setting is only used
548 * when TG is set to b01.
549 */
550 if (si_conf->id_type == STREAMID_TYPE_NULL) {
551 ether_addr_copy(si_data->dmac, sid->dst_mac);
552 si_data->vid_vidm_tg = (sid->vid & ENETC_CBDR_SID_VID_MASK) +
553 ((((u16)(sid->tagged) & 0x3) << 14)
554 | ENETC_CBDR_SID_VIDM);
555 } else if (si_conf->id_type == STREAMID_TYPE_SMAC) {
556 ether_addr_copy(si_data->smac, sid->src_mac);
557 si_data->vid_vidm_tg = (sid->vid & ENETC_CBDR_SID_VID_MASK) +
558 ((((u16)(sid->tagged) & 0x3) << 14)
559 | ENETC_CBDR_SID_VIDM);
560 }
561
562 err = enetc_send_cmd(priv->si, &cbd);
563 kfree(si_data);
564
565 return err;
566 }
567
568 /* Stream Filter Instance Set Descriptor */
enetc_streamfilter_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_filter * sfi,u8 enable)569 static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv,
570 struct enetc_psfp_filter *sfi,
571 u8 enable)
572 {
573 struct enetc_cbd cbd = {.cmd = 0};
574 struct sfi_conf *sfi_config;
575 int port;
576
577 port = enetc_pf_to_port(priv->si->pdev);
578 if (port < 0)
579 return -EINVAL;
580
581 cbd.index = cpu_to_le16(sfi->index);
582 cbd.cls = BDCR_CMD_STREAM_FILTER;
583 cbd.status_flags = 0x80;
584 cbd.length = cpu_to_le16(1);
585
586 sfi_config = &cbd.sfi_conf;
587 if (!enable)
588 goto exit;
589
590 sfi_config->en = 0x80;
591
592 if (sfi->handle >= 0) {
593 sfi_config->stream_handle =
594 cpu_to_le32(sfi->handle);
595 sfi_config->sthm |= 0x80;
596 }
597
598 sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id);
599 sfi_config->input_ports = cpu_to_le32(1 << port);
600
601 /* The priority value which may be matched against the
602 * frame’s priority value to determine a match for this entry.
603 */
604 if (sfi->prio >= 0)
605 sfi_config->multi |= (sfi->prio & 0x7) | 0x8;
606
607 /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX
608 * field as being either an MSDU value or an index into the Flow
609 * Meter Instance table.
610 */
611 if (sfi->maxsdu) {
612 sfi_config->msdu =
613 cpu_to_le16(sfi->maxsdu);
614 sfi_config->multi |= 0x40;
615 }
616
617 if (sfi->meter_id >= 0) {
618 sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id);
619 sfi_config->multi |= 0x80;
620 }
621
622 exit:
623 return enetc_send_cmd(priv->si, &cbd);
624 }
625
enetc_streamcounter_hw_get(struct enetc_ndev_priv * priv,u32 index,struct psfp_streamfilter_counters * cnt)626 static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv,
627 u32 index,
628 struct psfp_streamfilter_counters *cnt)
629 {
630 struct enetc_cbd cbd = { .cmd = 2 };
631 struct sfi_counter_data *data_buf;
632 dma_addr_t dma;
633 u16 data_size;
634 int err;
635
636 cbd.index = cpu_to_le16((u16)index);
637 cbd.cmd = 2;
638 cbd.cls = BDCR_CMD_STREAM_FILTER;
639 cbd.status_flags = 0;
640
641 data_size = sizeof(struct sfi_counter_data);
642 data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
643 if (!data_buf)
644 return -ENOMEM;
645
646 dma = dma_map_single(&priv->si->pdev->dev, data_buf,
647 data_size, DMA_FROM_DEVICE);
648 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
649 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
650 err = -ENOMEM;
651 goto exit;
652 }
653 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma));
654 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma));
655
656 cbd.length = cpu_to_le16(data_size);
657
658 err = enetc_send_cmd(priv->si, &cbd);
659 if (err)
660 goto exit;
661
662 cnt->matching_frames_count = ((u64)data_buf->matchh << 32) +
663 data_buf->matchl;
664
665 cnt->not_passing_sdu_count = ((u64)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)data_buf->stream_gate_droph << 32) +
673 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 = ((u64)data_buf->flow_meter_droph << 32) +
680 data_buf->flow_meter_dropl;
681
682 exit:
683 kfree(data_buf);
684 return err;
685 }
686
get_ptp_now(struct enetc_hw * hw)687 static u64 get_ptp_now(struct enetc_hw *hw)
688 {
689 u64 now_lo, now_hi, now;
690
691 now_lo = enetc_rd(hw, ENETC_SICTR0);
692 now_hi = enetc_rd(hw, ENETC_SICTR1);
693 now = now_lo | now_hi << 32;
694
695 return now;
696 }
697
get_start_ns(u64 now,u64 cycle,u64 * start)698 static int get_start_ns(u64 now, u64 cycle, u64 *start)
699 {
700 u64 n;
701
702 if (!cycle)
703 return -EFAULT;
704
705 n = div64_u64(now, cycle);
706
707 *start = (n + 1) * cycle;
708
709 return 0;
710 }
711
712 /* Stream Gate Instance Set Descriptor */
enetc_streamgate_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_gate * sgi,u8 enable)713 static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv,
714 struct enetc_psfp_gate *sgi,
715 u8 enable)
716 {
717 struct enetc_cbd cbd = { .cmd = 0 };
718 struct sgi_table *sgi_config;
719 struct sgcl_conf *sgcl_config;
720 struct sgcl_data *sgcl_data;
721 struct sgce *sgce;
722 dma_addr_t dma;
723 u16 data_size;
724 int err, i;
725 u64 now;
726
727 cbd.index = cpu_to_le16(sgi->index);
728 cbd.cmd = 0;
729 cbd.cls = BDCR_CMD_STREAM_GCL;
730 cbd.status_flags = 0x80;
731
732 /* disable */
733 if (!enable)
734 return enetc_send_cmd(priv->si, &cbd);
735
736 if (!sgi->num_entries)
737 return 0;
738
739 if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist ||
740 !sgi->cycletime)
741 return -EINVAL;
742
743 /* enable */
744 sgi_config = &cbd.sgi_table;
745
746 /* Keep open before gate list start */
747 sgi_config->ocgtst = 0x80;
748
749 sgi_config->oipv = (sgi->init_ipv < 0) ?
750 0x0 : ((sgi->init_ipv & 0x7) | 0x8);
751
752 sgi_config->en = 0x80;
753
754 /* Basic config */
755 err = enetc_send_cmd(priv->si, &cbd);
756 if (err)
757 return -EINVAL;
758
759 memset(&cbd, 0, sizeof(cbd));
760
761 cbd.index = cpu_to_le16(sgi->index);
762 cbd.cmd = 1;
763 cbd.cls = BDCR_CMD_STREAM_GCL;
764 cbd.status_flags = 0;
765
766 sgcl_config = &cbd.sgcl_conf;
767
768 sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3;
769
770 data_size = struct_size(sgcl_data, sgcl, sgi->num_entries);
771
772 sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
773 if (!sgcl_data)
774 return -ENOMEM;
775
776 cbd.length = cpu_to_le16(data_size);
777
778 dma = dma_map_single(&priv->si->pdev->dev,
779 sgcl_data, data_size,
780 DMA_FROM_DEVICE);
781 if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
782 netdev_err(priv->si->ndev, "DMA mapping failed!\n");
783 kfree(sgcl_data);
784 return -ENOMEM;
785 }
786
787 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma));
788 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma));
789
790 sgce = &sgcl_data->sgcl[0];
791
792 sgcl_config->agtst = 0x80;
793
794 sgcl_data->ct = sgi->cycletime;
795 sgcl_data->cte = sgi->cycletimext;
796
797 if (sgi->init_ipv >= 0)
798 sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8;
799
800 for (i = 0; i < sgi->num_entries; i++) {
801 struct action_gate_entry *from = &sgi->entries[i];
802 struct sgce *to = &sgce[i];
803
804 if (from->gate_state)
805 to->multi |= 0x10;
806
807 if (from->ipv >= 0)
808 to->multi |= ((from->ipv & 0x7) << 5) | 0x08;
809
810 if (from->maxoctets >= 0) {
811 to->multi |= 0x01;
812 to->msdu[0] = from->maxoctets & 0xFF;
813 to->msdu[1] = (from->maxoctets >> 8) & 0xFF;
814 to->msdu[2] = (from->maxoctets >> 16) & 0xFF;
815 }
816
817 to->interval = from->interval;
818 }
819
820 /* If basetime is less than now, calculate start time */
821 now = get_ptp_now(&priv->si->hw);
822
823 if (sgi->basetime < now) {
824 u64 start;
825
826 err = get_start_ns(now, sgi->cycletime, &start);
827 if (err)
828 goto exit;
829 sgcl_data->btl = lower_32_bits(start);
830 sgcl_data->bth = upper_32_bits(start);
831 } else {
832 u32 hi, lo;
833
834 hi = upper_32_bits(sgi->basetime);
835 lo = lower_32_bits(sgi->basetime);
836 sgcl_data->bth = hi;
837 sgcl_data->btl = lo;
838 }
839
840 err = enetc_send_cmd(priv->si, &cbd);
841
842 exit:
843 kfree(sgcl_data);
844
845 return err;
846 }
847
enetc_flowmeter_hw_set(struct enetc_ndev_priv * priv,struct enetc_psfp_meter * fmi,u8 enable)848 static int enetc_flowmeter_hw_set(struct enetc_ndev_priv *priv,
849 struct enetc_psfp_meter *fmi,
850 u8 enable)
851 {
852 struct enetc_cbd cbd = { .cmd = 0 };
853 struct fmi_conf *fmi_config;
854 u64 temp = 0;
855
856 cbd.index = cpu_to_le16((u16)fmi->index);
857 cbd.cls = BDCR_CMD_FLOW_METER;
858 cbd.status_flags = 0x80;
859
860 if (!enable)
861 return enetc_send_cmd(priv->si, &cbd);
862
863 fmi_config = &cbd.fmi_conf;
864 fmi_config->en = 0x80;
865
866 if (fmi->cir) {
867 temp = (u64)8000 * fmi->cir;
868 temp = div_u64(temp, 3725);
869 }
870
871 fmi_config->cir = cpu_to_le32((u32)temp);
872 fmi_config->cbs = cpu_to_le32(fmi->cbs);
873
874 /* Default for eir ebs disable */
875 fmi_config->eir = 0;
876 fmi_config->ebs = 0;
877
878 /* Default:
879 * mark red disable
880 * drop on yellow disable
881 * color mode disable
882 * couple flag disable
883 */
884 fmi_config->conf = 0;
885
886 return enetc_send_cmd(priv->si, &cbd);
887 }
888
enetc_get_stream_by_index(u32 index)889 static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index)
890 {
891 struct enetc_stream_filter *f;
892
893 hlist_for_each_entry(f, &epsfp.stream_list, node)
894 if (f->sid.index == index)
895 return f;
896
897 return NULL;
898 }
899
enetc_get_gate_by_index(u32 index)900 static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index)
901 {
902 struct enetc_psfp_gate *g;
903
904 hlist_for_each_entry(g, &epsfp.psfp_gate_list, node)
905 if (g->index == index)
906 return g;
907
908 return NULL;
909 }
910
enetc_get_filter_by_index(u32 index)911 static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index)
912 {
913 struct enetc_psfp_filter *s;
914
915 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
916 if (s->index == index)
917 return s;
918
919 return NULL;
920 }
921
enetc_get_meter_by_index(u32 index)922 static struct enetc_psfp_meter *enetc_get_meter_by_index(u32 index)
923 {
924 struct enetc_psfp_meter *m;
925
926 hlist_for_each_entry(m, &epsfp.psfp_meter_list, node)
927 if (m->index == index)
928 return m;
929
930 return NULL;
931 }
932
933 static struct enetc_psfp_filter
enetc_psfp_check_sfi(struct enetc_psfp_filter * sfi)934 *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi)
935 {
936 struct enetc_psfp_filter *s;
937
938 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
939 if (s->gate_id == sfi->gate_id &&
940 s->prio == sfi->prio &&
941 s->maxsdu == sfi->maxsdu &&
942 s->meter_id == sfi->meter_id)
943 return s;
944
945 return NULL;
946 }
947
enetc_get_free_index(struct enetc_ndev_priv * priv)948 static int enetc_get_free_index(struct enetc_ndev_priv *priv)
949 {
950 u32 max_size = priv->psfp_cap.max_psfp_filter;
951 unsigned long index;
952
953 index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size);
954 if (index == max_size)
955 return -1;
956
957 return index;
958 }
959
stream_filter_unref(struct enetc_ndev_priv * priv,u32 index)960 static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index)
961 {
962 struct enetc_psfp_filter *sfi;
963 u8 z;
964
965 sfi = enetc_get_filter_by_index(index);
966 WARN_ON(!sfi);
967 z = refcount_dec_and_test(&sfi->refcount);
968
969 if (z) {
970 enetc_streamfilter_hw_set(priv, sfi, false);
971 hlist_del(&sfi->node);
972 kfree(sfi);
973 clear_bit(index, epsfp.psfp_sfi_bitmap);
974 }
975 }
976
stream_gate_unref(struct enetc_ndev_priv * priv,u32 index)977 static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index)
978 {
979 struct enetc_psfp_gate *sgi;
980 u8 z;
981
982 sgi = enetc_get_gate_by_index(index);
983 WARN_ON(!sgi);
984 z = refcount_dec_and_test(&sgi->refcount);
985 if (z) {
986 enetc_streamgate_hw_set(priv, sgi, false);
987 hlist_del(&sgi->node);
988 kfree(sgi);
989 }
990 }
991
flow_meter_unref(struct enetc_ndev_priv * priv,u32 index)992 static void flow_meter_unref(struct enetc_ndev_priv *priv, u32 index)
993 {
994 struct enetc_psfp_meter *fmi;
995 u8 z;
996
997 fmi = enetc_get_meter_by_index(index);
998 WARN_ON(!fmi);
999 z = refcount_dec_and_test(&fmi->refcount);
1000 if (z) {
1001 enetc_flowmeter_hw_set(priv, fmi, false);
1002 hlist_del(&fmi->node);
1003 kfree(fmi);
1004 }
1005 }
1006
remove_one_chain(struct enetc_ndev_priv * priv,struct enetc_stream_filter * filter)1007 static void remove_one_chain(struct enetc_ndev_priv *priv,
1008 struct enetc_stream_filter *filter)
1009 {
1010 if (filter->flags & ENETC_PSFP_FLAGS_FMI)
1011 flow_meter_unref(priv, filter->fmi_index);
1012
1013 stream_gate_unref(priv, filter->sgi_index);
1014 stream_filter_unref(priv, filter->sfi_index);
1015
1016 hlist_del(&filter->node);
1017 kfree(filter);
1018 }
1019
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)1020 static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv,
1021 struct enetc_streamid *sid,
1022 struct enetc_psfp_filter *sfi,
1023 struct enetc_psfp_gate *sgi,
1024 struct enetc_psfp_meter *fmi)
1025 {
1026 int err;
1027
1028 err = enetc_streamid_hw_set(priv, sid, true);
1029 if (err)
1030 return err;
1031
1032 if (sfi) {
1033 err = enetc_streamfilter_hw_set(priv, sfi, true);
1034 if (err)
1035 goto revert_sid;
1036 }
1037
1038 err = enetc_streamgate_hw_set(priv, sgi, true);
1039 if (err)
1040 goto revert_sfi;
1041
1042 if (fmi) {
1043 err = enetc_flowmeter_hw_set(priv, fmi, true);
1044 if (err)
1045 goto revert_sgi;
1046 }
1047
1048 return 0;
1049
1050 revert_sgi:
1051 enetc_streamgate_hw_set(priv, sgi, false);
1052 revert_sfi:
1053 if (sfi)
1054 enetc_streamfilter_hw_set(priv, sfi, false);
1055 revert_sid:
1056 enetc_streamid_hw_set(priv, sid, false);
1057 return err;
1058 }
1059
enetc_check_flow_actions(u64 acts,unsigned int inputkeys)1060 static struct actions_fwd *enetc_check_flow_actions(u64 acts,
1061 unsigned int inputkeys)
1062 {
1063 int i;
1064
1065 for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++)
1066 if (acts == enetc_act_fwd[i].actions &&
1067 inputkeys & enetc_act_fwd[i].keys)
1068 return &enetc_act_fwd[i];
1069
1070 return NULL;
1071 }
1072
enetc_psfp_parse_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1073 static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv,
1074 struct flow_cls_offload *f)
1075 {
1076 struct flow_action_entry *entryg = NULL, *entryp = NULL;
1077 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1078 struct netlink_ext_ack *extack = f->common.extack;
1079 struct enetc_stream_filter *filter, *old_filter;
1080 struct enetc_psfp_meter *fmi = NULL, *old_fmi;
1081 struct enetc_psfp_filter *sfi, *old_sfi;
1082 struct enetc_psfp_gate *sgi, *old_sgi;
1083 struct flow_action_entry *entry;
1084 struct action_gate_entry *e;
1085 u8 sfi_overwrite = 0;
1086 int entries_size;
1087 int i, err;
1088
1089 if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
1090 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
1091 return -ENOSPC;
1092 }
1093
1094 flow_action_for_each(i, entry, &rule->action)
1095 if (entry->id == FLOW_ACTION_GATE)
1096 entryg = entry;
1097 else if (entry->id == FLOW_ACTION_POLICE)
1098 entryp = entry;
1099
1100 /* Not support without gate action */
1101 if (!entryg)
1102 return -EINVAL;
1103
1104 filter = kzalloc(sizeof(*filter), GFP_KERNEL);
1105 if (!filter)
1106 return -ENOMEM;
1107
1108 filter->sid.index = f->common.chain_index;
1109
1110 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1111 struct flow_match_eth_addrs match;
1112
1113 flow_rule_match_eth_addrs(rule, &match);
1114
1115 if (!is_zero_ether_addr(match.mask->dst) &&
1116 !is_zero_ether_addr(match.mask->src)) {
1117 NL_SET_ERR_MSG_MOD(extack,
1118 "Cannot match on both source and destination MAC");
1119 err = -EINVAL;
1120 goto free_filter;
1121 }
1122
1123 if (!is_zero_ether_addr(match.mask->dst)) {
1124 if (!is_broadcast_ether_addr(match.mask->dst)) {
1125 NL_SET_ERR_MSG_MOD(extack,
1126 "Masked matching on destination MAC not supported");
1127 err = -EINVAL;
1128 goto free_filter;
1129 }
1130 ether_addr_copy(filter->sid.dst_mac, match.key->dst);
1131 filter->sid.filtertype = STREAMID_TYPE_NULL;
1132 }
1133
1134 if (!is_zero_ether_addr(match.mask->src)) {
1135 if (!is_broadcast_ether_addr(match.mask->src)) {
1136 NL_SET_ERR_MSG_MOD(extack,
1137 "Masked matching on source MAC not supported");
1138 err = -EINVAL;
1139 goto free_filter;
1140 }
1141 ether_addr_copy(filter->sid.src_mac, match.key->src);
1142 filter->sid.filtertype = STREAMID_TYPE_SMAC;
1143 }
1144 } else {
1145 NL_SET_ERR_MSG_MOD(extack, "Unsupported, must include ETH_ADDRS");
1146 err = -EINVAL;
1147 goto free_filter;
1148 }
1149
1150 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
1151 struct flow_match_vlan match;
1152
1153 flow_rule_match_vlan(rule, &match);
1154 if (match.mask->vlan_priority) {
1155 if (match.mask->vlan_priority !=
1156 (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) {
1157 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority");
1158 err = -EINVAL;
1159 goto free_filter;
1160 }
1161 }
1162
1163 if (match.mask->vlan_id) {
1164 if (match.mask->vlan_id != VLAN_VID_MASK) {
1165 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id");
1166 err = -EINVAL;
1167 goto free_filter;
1168 }
1169
1170 filter->sid.vid = match.key->vlan_id;
1171 if (!filter->sid.vid)
1172 filter->sid.tagged = STREAMID_VLAN_UNTAGGED;
1173 else
1174 filter->sid.tagged = STREAMID_VLAN_TAGGED;
1175 }
1176 } else {
1177 filter->sid.tagged = STREAMID_VLAN_ALL;
1178 }
1179
1180 /* parsing gate action */
1181 if (entryg->gate.index >= priv->psfp_cap.max_psfp_gate) {
1182 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
1183 err = -ENOSPC;
1184 goto free_filter;
1185 }
1186
1187 if (entryg->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) {
1188 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
1189 err = -ENOSPC;
1190 goto free_filter;
1191 }
1192
1193 entries_size = struct_size(sgi, entries, entryg->gate.num_entries);
1194 sgi = kzalloc(entries_size, GFP_KERNEL);
1195 if (!sgi) {
1196 err = -ENOMEM;
1197 goto free_filter;
1198 }
1199
1200 refcount_set(&sgi->refcount, 1);
1201 sgi->index = entryg->gate.index;
1202 sgi->init_ipv = entryg->gate.prio;
1203 sgi->basetime = entryg->gate.basetime;
1204 sgi->cycletime = entryg->gate.cycletime;
1205 sgi->num_entries = entryg->gate.num_entries;
1206
1207 e = sgi->entries;
1208 for (i = 0; i < entryg->gate.num_entries; i++) {
1209 e[i].gate_state = entryg->gate.entries[i].gate_state;
1210 e[i].interval = entryg->gate.entries[i].interval;
1211 e[i].ipv = entryg->gate.entries[i].ipv;
1212 e[i].maxoctets = entryg->gate.entries[i].maxoctets;
1213 }
1214
1215 filter->sgi_index = sgi->index;
1216
1217 sfi = kzalloc(sizeof(*sfi), GFP_KERNEL);
1218 if (!sfi) {
1219 err = -ENOMEM;
1220 goto free_gate;
1221 }
1222
1223 refcount_set(&sfi->refcount, 1);
1224 sfi->gate_id = sgi->index;
1225 sfi->meter_id = ENETC_PSFP_WILDCARD;
1226
1227 /* Flow meter and max frame size */
1228 if (entryp) {
1229 if (entryp->police.rate_pkt_ps) {
1230 NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second");
1231 err = -EOPNOTSUPP;
1232 goto free_sfi;
1233 }
1234 if (entryp->police.burst) {
1235 fmi = kzalloc(sizeof(*fmi), GFP_KERNEL);
1236 if (!fmi) {
1237 err = -ENOMEM;
1238 goto free_sfi;
1239 }
1240 refcount_set(&fmi->refcount, 1);
1241 fmi->cir = entryp->police.rate_bytes_ps;
1242 fmi->cbs = entryp->police.burst;
1243 fmi->index = entryp->police.index;
1244 filter->flags |= ENETC_PSFP_FLAGS_FMI;
1245 filter->fmi_index = fmi->index;
1246 sfi->meter_id = fmi->index;
1247 }
1248
1249 if (entryp->police.mtu)
1250 sfi->maxsdu = entryp->police.mtu;
1251 }
1252
1253 /* prio ref the filter prio */
1254 if (f->common.prio && f->common.prio <= BIT(3))
1255 sfi->prio = f->common.prio - 1;
1256 else
1257 sfi->prio = ENETC_PSFP_WILDCARD;
1258
1259 old_sfi = enetc_psfp_check_sfi(sfi);
1260 if (!old_sfi) {
1261 int index;
1262
1263 index = enetc_get_free_index(priv);
1264 if (sfi->handle < 0) {
1265 NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!");
1266 err = -ENOSPC;
1267 goto free_fmi;
1268 }
1269
1270 sfi->index = index;
1271 sfi->handle = index + HANDLE_OFFSET;
1272 /* Update the stream filter handle also */
1273 filter->sid.handle = sfi->handle;
1274 filter->sfi_index = sfi->index;
1275 sfi_overwrite = 0;
1276 } else {
1277 filter->sfi_index = old_sfi->index;
1278 filter->sid.handle = old_sfi->handle;
1279 sfi_overwrite = 1;
1280 }
1281
1282 err = enetc_psfp_hw_set(priv, &filter->sid,
1283 sfi_overwrite ? NULL : sfi, sgi, fmi);
1284 if (err)
1285 goto free_fmi;
1286
1287 spin_lock(&epsfp.psfp_lock);
1288 if (filter->flags & ENETC_PSFP_FLAGS_FMI) {
1289 old_fmi = enetc_get_meter_by_index(filter->fmi_index);
1290 if (old_fmi) {
1291 fmi->refcount = old_fmi->refcount;
1292 refcount_set(&fmi->refcount,
1293 refcount_read(&old_fmi->refcount) + 1);
1294 hlist_del(&old_fmi->node);
1295 kfree(old_fmi);
1296 }
1297 hlist_add_head(&fmi->node, &epsfp.psfp_meter_list);
1298 }
1299
1300 /* Remove the old node if exist and update with a new node */
1301 old_sgi = enetc_get_gate_by_index(filter->sgi_index);
1302 if (old_sgi) {
1303 refcount_set(&sgi->refcount,
1304 refcount_read(&old_sgi->refcount) + 1);
1305 hlist_del(&old_sgi->node);
1306 kfree(old_sgi);
1307 }
1308
1309 hlist_add_head(&sgi->node, &epsfp.psfp_gate_list);
1310
1311 if (!old_sfi) {
1312 hlist_add_head(&sfi->node, &epsfp.psfp_filter_list);
1313 set_bit(sfi->index, epsfp.psfp_sfi_bitmap);
1314 } else {
1315 kfree(sfi);
1316 refcount_inc(&old_sfi->refcount);
1317 }
1318
1319 old_filter = enetc_get_stream_by_index(filter->sid.index);
1320 if (old_filter)
1321 remove_one_chain(priv, old_filter);
1322
1323 filter->stats.lastused = jiffies;
1324 hlist_add_head(&filter->node, &epsfp.stream_list);
1325
1326 spin_unlock(&epsfp.psfp_lock);
1327
1328 return 0;
1329
1330 free_fmi:
1331 kfree(fmi);
1332 free_sfi:
1333 kfree(sfi);
1334 free_gate:
1335 kfree(sgi);
1336 free_filter:
1337 kfree(filter);
1338
1339 return err;
1340 }
1341
enetc_config_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * cls_flower)1342 static int enetc_config_clsflower(struct enetc_ndev_priv *priv,
1343 struct flow_cls_offload *cls_flower)
1344 {
1345 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
1346 struct netlink_ext_ack *extack = cls_flower->common.extack;
1347 struct flow_dissector *dissector = rule->match.dissector;
1348 struct flow_action *action = &rule->action;
1349 struct flow_action_entry *entry;
1350 struct actions_fwd *fwd;
1351 u64 actions = 0;
1352 int i, err;
1353
1354 if (!flow_action_has_entries(action)) {
1355 NL_SET_ERR_MSG_MOD(extack, "At least one action is needed");
1356 return -EINVAL;
1357 }
1358
1359 flow_action_for_each(i, entry, action)
1360 actions |= BIT(entry->id);
1361
1362 fwd = enetc_check_flow_actions(actions, dissector->used_keys);
1363 if (!fwd) {
1364 NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!");
1365 return -EOPNOTSUPP;
1366 }
1367
1368 if (fwd->output & FILTER_ACTION_TYPE_PSFP) {
1369 err = enetc_psfp_parse_clsflower(priv, cls_flower);
1370 if (err) {
1371 NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs");
1372 return err;
1373 }
1374 } else {
1375 NL_SET_ERR_MSG_MOD(extack, "Unsupported actions");
1376 return -EOPNOTSUPP;
1377 }
1378
1379 return 0;
1380 }
1381
enetc_psfp_destroy_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1382 static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv,
1383 struct flow_cls_offload *f)
1384 {
1385 struct enetc_stream_filter *filter;
1386 struct netlink_ext_ack *extack = f->common.extack;
1387 int err;
1388
1389 if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
1390 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
1391 return -ENOSPC;
1392 }
1393
1394 filter = enetc_get_stream_by_index(f->common.chain_index);
1395 if (!filter)
1396 return -EINVAL;
1397
1398 err = enetc_streamid_hw_set(priv, &filter->sid, false);
1399 if (err)
1400 return err;
1401
1402 remove_one_chain(priv, filter);
1403
1404 return 0;
1405 }
1406
enetc_destroy_clsflower(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1407 static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv,
1408 struct flow_cls_offload *f)
1409 {
1410 return enetc_psfp_destroy_clsflower(priv, f);
1411 }
1412
enetc_psfp_get_stats(struct enetc_ndev_priv * priv,struct flow_cls_offload * f)1413 static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv,
1414 struct flow_cls_offload *f)
1415 {
1416 struct psfp_streamfilter_counters counters = {};
1417 struct enetc_stream_filter *filter;
1418 struct flow_stats stats = {};
1419 int err;
1420
1421 filter = enetc_get_stream_by_index(f->common.chain_index);
1422 if (!filter)
1423 return -EINVAL;
1424
1425 err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters);
1426 if (err)
1427 return -EINVAL;
1428
1429 spin_lock(&epsfp.psfp_lock);
1430 stats.pkts = counters.matching_frames_count +
1431 counters.not_passing_sdu_count -
1432 filter->stats.pkts;
1433 stats.drops = counters.not_passing_frames_count +
1434 counters.not_passing_sdu_count +
1435 counters.red_frames_count -
1436 filter->stats.drops;
1437 stats.lastused = filter->stats.lastused;
1438 filter->stats.pkts += stats.pkts;
1439 filter->stats.drops += stats.drops;
1440 spin_unlock(&epsfp.psfp_lock);
1441
1442 flow_stats_update(&f->stats, 0x0, stats.pkts, stats.drops,
1443 stats.lastused, FLOW_ACTION_HW_STATS_DELAYED);
1444
1445 return 0;
1446 }
1447
enetc_setup_tc_cls_flower(struct enetc_ndev_priv * priv,struct flow_cls_offload * cls_flower)1448 static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv,
1449 struct flow_cls_offload *cls_flower)
1450 {
1451 switch (cls_flower->command) {
1452 case FLOW_CLS_REPLACE:
1453 return enetc_config_clsflower(priv, cls_flower);
1454 case FLOW_CLS_DESTROY:
1455 return enetc_destroy_clsflower(priv, cls_flower);
1456 case FLOW_CLS_STATS:
1457 return enetc_psfp_get_stats(priv, cls_flower);
1458 default:
1459 return -EOPNOTSUPP;
1460 }
1461 }
1462
clean_psfp_sfi_bitmap(void)1463 static inline void clean_psfp_sfi_bitmap(void)
1464 {
1465 bitmap_free(epsfp.psfp_sfi_bitmap);
1466 epsfp.psfp_sfi_bitmap = NULL;
1467 }
1468
clean_stream_list(void)1469 static void clean_stream_list(void)
1470 {
1471 struct enetc_stream_filter *s;
1472 struct hlist_node *tmp;
1473
1474 hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) {
1475 hlist_del(&s->node);
1476 kfree(s);
1477 }
1478 }
1479
clean_sfi_list(void)1480 static void clean_sfi_list(void)
1481 {
1482 struct enetc_psfp_filter *sfi;
1483 struct hlist_node *tmp;
1484
1485 hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) {
1486 hlist_del(&sfi->node);
1487 kfree(sfi);
1488 }
1489 }
1490
clean_sgi_list(void)1491 static void clean_sgi_list(void)
1492 {
1493 struct enetc_psfp_gate *sgi;
1494 struct hlist_node *tmp;
1495
1496 hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) {
1497 hlist_del(&sgi->node);
1498 kfree(sgi);
1499 }
1500 }
1501
clean_psfp_all(void)1502 static void clean_psfp_all(void)
1503 {
1504 /* Disable all list nodes and free all memory */
1505 clean_sfi_list();
1506 clean_sgi_list();
1507 clean_stream_list();
1508 epsfp.dev_bitmap = 0;
1509 clean_psfp_sfi_bitmap();
1510 }
1511
enetc_setup_tc_block_cb(enum tc_setup_type type,void * type_data,void * cb_priv)1512 int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
1513 void *cb_priv)
1514 {
1515 struct net_device *ndev = cb_priv;
1516
1517 if (!tc_can_offload(ndev))
1518 return -EOPNOTSUPP;
1519
1520 switch (type) {
1521 case TC_SETUP_CLSFLOWER:
1522 return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data);
1523 default:
1524 return -EOPNOTSUPP;
1525 }
1526 }
1527
enetc_psfp_init(struct enetc_ndev_priv * priv)1528 int enetc_psfp_init(struct enetc_ndev_priv *priv)
1529 {
1530 if (epsfp.psfp_sfi_bitmap)
1531 return 0;
1532
1533 epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter,
1534 GFP_KERNEL);
1535 if (!epsfp.psfp_sfi_bitmap)
1536 return -ENOMEM;
1537
1538 spin_lock_init(&epsfp.psfp_lock);
1539
1540 if (list_empty(&enetc_block_cb_list))
1541 epsfp.dev_bitmap = 0;
1542
1543 return 0;
1544 }
1545
enetc_psfp_clean(struct enetc_ndev_priv * priv)1546 int enetc_psfp_clean(struct enetc_ndev_priv *priv)
1547 {
1548 if (!list_empty(&enetc_block_cb_list))
1549 return -EBUSY;
1550
1551 clean_psfp_all();
1552
1553 return 0;
1554 }
1555
enetc_setup_tc_psfp(struct net_device * ndev,void * type_data)1556 int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data)
1557 {
1558 struct enetc_ndev_priv *priv = netdev_priv(ndev);
1559 struct flow_block_offload *f = type_data;
1560 int port, err;
1561
1562 err = flow_block_cb_setup_simple(f, &enetc_block_cb_list,
1563 enetc_setup_tc_block_cb,
1564 ndev, ndev, true);
1565 if (err)
1566 return err;
1567
1568 switch (f->command) {
1569 case FLOW_BLOCK_BIND:
1570 port = enetc_pf_to_port(priv->si->pdev);
1571 if (port < 0)
1572 return -EINVAL;
1573
1574 set_bit(port, &epsfp.dev_bitmap);
1575 break;
1576 case FLOW_BLOCK_UNBIND:
1577 port = enetc_pf_to_port(priv->si->pdev);
1578 if (port < 0)
1579 return -EINVAL;
1580
1581 clear_bit(port, &epsfp.dev_bitmap);
1582 if (!epsfp.dev_bitmap)
1583 clean_psfp_all();
1584 break;
1585 }
1586
1587 return 0;
1588 }
1589
