1
2
3
4#include <linux/etherdevice.h>
5#include <linux/lockdep.h>
6#include <linux/pci.h>
7#include <linux/skbuff.h>
8#include <linux/vmalloc.h>
9#include <net/devlink.h>
10#include <net/dst_metadata.h>
11
12#include "main.h"
13#include "../nfpcore/nfp_cpp.h"
14#include "../nfpcore/nfp_nffw.h"
15#include "../nfpcore/nfp_nsp.h"
16#include "../nfp_app.h"
17#include "../nfp_main.h"
18#include "../nfp_net.h"
19#include "../nfp_net_repr.h"
20#include "../nfp_port.h"
21#include "./cmsg.h"
22
23#define NFP_FLOWER_ALLOWED_VER 0x0001000000010000UL
24
25#define NFP_MIN_INT_PORT_ID 1
26#define NFP_MAX_INT_PORT_ID 256
27
28static const char *nfp_flower_extra_cap(struct nfp_app *app, struct nfp_net *nn)
29{
30 return "FLOWER";
31}
32
33static enum devlink_eswitch_mode eswitch_mode_get(struct nfp_app *app)
34{
35 return DEVLINK_ESWITCH_MODE_SWITCHDEV;
36}
37
38static int
39nfp_flower_lookup_internal_port_id(struct nfp_flower_priv *priv,
40 struct net_device *netdev)
41{
42 struct net_device *entry;
43 int i, id = 0;
44
45 rcu_read_lock();
46 idr_for_each_entry(&priv->internal_ports.port_ids, entry, i)
47 if (entry == netdev) {
48 id = i;
49 break;
50 }
51 rcu_read_unlock();
52
53 return id;
54}
55
56static int
57nfp_flower_get_internal_port_id(struct nfp_app *app, struct net_device *netdev)
58{
59 struct nfp_flower_priv *priv = app->priv;
60 int id;
61
62 id = nfp_flower_lookup_internal_port_id(priv, netdev);
63 if (id > 0)
64 return id;
65
66 idr_preload(GFP_ATOMIC);
67 spin_lock_bh(&priv->internal_ports.lock);
68 id = idr_alloc(&priv->internal_ports.port_ids, netdev,
69 NFP_MIN_INT_PORT_ID, NFP_MAX_INT_PORT_ID, GFP_ATOMIC);
70 spin_unlock_bh(&priv->internal_ports.lock);
71 idr_preload_end();
72
73 return id;
74}
75
76u32 nfp_flower_get_port_id_from_netdev(struct nfp_app *app,
77 struct net_device *netdev)
78{
79 int ext_port;
80
81 if (nfp_netdev_is_nfp_repr(netdev)) {
82 return nfp_repr_get_port_id(netdev);
83 } else if (nfp_flower_internal_port_can_offload(app, netdev)) {
84 ext_port = nfp_flower_get_internal_port_id(app, netdev);
85 if (ext_port < 0)
86 return 0;
87
88 return nfp_flower_internal_port_get_port_id(ext_port);
89 }
90
91 return 0;
92}
93
94static struct net_device *
95nfp_flower_get_netdev_from_internal_port_id(struct nfp_app *app, int port_id)
96{
97 struct nfp_flower_priv *priv = app->priv;
98 struct net_device *netdev;
99
100 rcu_read_lock();
101 netdev = idr_find(&priv->internal_ports.port_ids, port_id);
102 rcu_read_unlock();
103
104 return netdev;
105}
106
107static void
108nfp_flower_free_internal_port_id(struct nfp_app *app, struct net_device *netdev)
109{
110 struct nfp_flower_priv *priv = app->priv;
111 int id;
112
113 id = nfp_flower_lookup_internal_port_id(priv, netdev);
114 if (!id)
115 return;
116
117 spin_lock_bh(&priv->internal_ports.lock);
118 idr_remove(&priv->internal_ports.port_ids, id);
119 spin_unlock_bh(&priv->internal_ports.lock);
120}
121
122static int
123nfp_flower_internal_port_event_handler(struct nfp_app *app,
124 struct net_device *netdev,
125 unsigned long event)
126{
127 if (event == NETDEV_UNREGISTER &&
128 nfp_flower_internal_port_can_offload(app, netdev))
129 nfp_flower_free_internal_port_id(app, netdev);
130
131 return NOTIFY_OK;
132}
133
134static void nfp_flower_internal_port_init(struct nfp_flower_priv *priv)
135{
136 spin_lock_init(&priv->internal_ports.lock);
137 idr_init(&priv->internal_ports.port_ids);
138}
139
140static void nfp_flower_internal_port_cleanup(struct nfp_flower_priv *priv)
141{
142 idr_destroy(&priv->internal_ports.port_ids);
143}
144
145static struct nfp_flower_non_repr_priv *
146nfp_flower_non_repr_priv_lookup(struct nfp_app *app, struct net_device *netdev)
147{
148 struct nfp_flower_priv *priv = app->priv;
149 struct nfp_flower_non_repr_priv *entry;
150
151 ASSERT_RTNL();
152
153 list_for_each_entry(entry, &priv->non_repr_priv, list)
154 if (entry->netdev == netdev)
155 return entry;
156
157 return NULL;
158}
159
160void
161__nfp_flower_non_repr_priv_get(struct nfp_flower_non_repr_priv *non_repr_priv)
162{
163 non_repr_priv->ref_count++;
164}
165
166struct nfp_flower_non_repr_priv *
167nfp_flower_non_repr_priv_get(struct nfp_app *app, struct net_device *netdev)
168{
169 struct nfp_flower_priv *priv = app->priv;
170 struct nfp_flower_non_repr_priv *entry;
171
172 entry = nfp_flower_non_repr_priv_lookup(app, netdev);
173 if (entry)
174 goto inc_ref;
175
176 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
177 if (!entry)
178 return NULL;
179
180 entry->netdev = netdev;
181 list_add(&entry->list, &priv->non_repr_priv);
182
183inc_ref:
184 __nfp_flower_non_repr_priv_get(entry);
185 return entry;
186}
187
188void
189__nfp_flower_non_repr_priv_put(struct nfp_flower_non_repr_priv *non_repr_priv)
190{
191 if (--non_repr_priv->ref_count)
192 return;
193
194 list_del(&non_repr_priv->list);
195 kfree(non_repr_priv);
196}
197
198void
199nfp_flower_non_repr_priv_put(struct nfp_app *app, struct net_device *netdev)
200{
201 struct nfp_flower_non_repr_priv *entry;
202
203 entry = nfp_flower_non_repr_priv_lookup(app, netdev);
204 if (!entry)
205 return;
206
207 __nfp_flower_non_repr_priv_put(entry);
208}
209
210static enum nfp_repr_type
211nfp_flower_repr_get_type_and_port(struct nfp_app *app, u32 port_id, u8 *port)
212{
213 switch (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port_id)) {
214 case NFP_FLOWER_CMSG_PORT_TYPE_PHYS_PORT:
215 *port = FIELD_GET(NFP_FLOWER_CMSG_PORT_PHYS_PORT_NUM,
216 port_id);
217 return NFP_REPR_TYPE_PHYS_PORT;
218
219 case NFP_FLOWER_CMSG_PORT_TYPE_PCIE_PORT:
220 *port = FIELD_GET(NFP_FLOWER_CMSG_PORT_VNIC, port_id);
221 if (FIELD_GET(NFP_FLOWER_CMSG_PORT_VNIC_TYPE, port_id) ==
222 NFP_FLOWER_CMSG_PORT_VNIC_TYPE_PF)
223 return NFP_REPR_TYPE_PF;
224 else
225 return NFP_REPR_TYPE_VF;
226 }
227
228 return __NFP_REPR_TYPE_MAX;
229}
230
231static struct net_device *
232nfp_flower_dev_get(struct nfp_app *app, u32 port_id, bool *redir_egress)
233{
234 enum nfp_repr_type repr_type;
235 struct nfp_reprs *reprs;
236 u8 port = 0;
237
238
239 if (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port_id) ==
240 NFP_FLOWER_CMSG_PORT_TYPE_OTHER_PORT) {
241 if (redir_egress)
242 *redir_egress = true;
243 port = FIELD_GET(NFP_FLOWER_CMSG_PORT_PHYS_PORT_NUM, port_id);
244 return nfp_flower_get_netdev_from_internal_port_id(app, port);
245 }
246
247 repr_type = nfp_flower_repr_get_type_and_port(app, port_id, &port);
248 if (repr_type > NFP_REPR_TYPE_MAX)
249 return NULL;
250
251 reprs = rcu_dereference(app->reprs[repr_type]);
252 if (!reprs)
253 return NULL;
254
255 if (port >= reprs->num_reprs)
256 return NULL;
257
258 return rcu_dereference(reprs->reprs[port]);
259}
260
261static int
262nfp_flower_reprs_reify(struct nfp_app *app, enum nfp_repr_type type,
263 bool exists)
264{
265 struct nfp_reprs *reprs;
266 int i, err, count = 0;
267
268 reprs = rcu_dereference_protected(app->reprs[type],
269 lockdep_is_held(&app->pf->lock));
270 if (!reprs)
271 return 0;
272
273 for (i = 0; i < reprs->num_reprs; i++) {
274 struct net_device *netdev;
275
276 netdev = nfp_repr_get_locked(app, reprs, i);
277 if (netdev) {
278 struct nfp_repr *repr = netdev_priv(netdev);
279
280 err = nfp_flower_cmsg_portreify(repr, exists);
281 if (err)
282 return err;
283 count++;
284 }
285 }
286
287 return count;
288}
289
290static int
291nfp_flower_wait_repr_reify(struct nfp_app *app, atomic_t *replies, int tot_repl)
292{
293 struct nfp_flower_priv *priv = app->priv;
294
295 if (!tot_repl)
296 return 0;
297
298 lockdep_assert_held(&app->pf->lock);
299 if (!wait_event_timeout(priv->reify_wait_queue,
300 atomic_read(replies) >= tot_repl,
301 NFP_FL_REPLY_TIMEOUT)) {
302 nfp_warn(app->cpp, "Not all reprs responded to reify\n");
303 return -EIO;
304 }
305
306 return 0;
307}
308
309static int
310nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
311{
312 int err;
313
314 err = nfp_flower_cmsg_portmod(repr, true, repr->netdev->mtu, false);
315 if (err)
316 return err;
317
318 netif_tx_wake_all_queues(repr->netdev);
319
320 return 0;
321}
322
323static int
324nfp_flower_repr_netdev_stop(struct nfp_app *app, struct nfp_repr *repr)
325{
326 netif_tx_disable(repr->netdev);
327
328 return nfp_flower_cmsg_portmod(repr, false, repr->netdev->mtu, false);
329}
330
331static void
332nfp_flower_repr_netdev_clean(struct nfp_app *app, struct net_device *netdev)
333{
334 struct nfp_repr *repr = netdev_priv(netdev);
335
336 kfree(repr->app_priv);
337}
338
339static void
340nfp_flower_repr_netdev_preclean(struct nfp_app *app, struct net_device *netdev)
341{
342 struct nfp_repr *repr = netdev_priv(netdev);
343 struct nfp_flower_priv *priv = app->priv;
344 atomic_t *replies = &priv->reify_replies;
345 int err;
346
347 atomic_set(replies, 0);
348 err = nfp_flower_cmsg_portreify(repr, false);
349 if (err) {
350 nfp_warn(app->cpp, "Failed to notify firmware about repr destruction\n");
351 return;
352 }
353
354 nfp_flower_wait_repr_reify(app, replies, 1);
355}
356
357static void nfp_flower_sriov_disable(struct nfp_app *app)
358{
359 struct nfp_flower_priv *priv = app->priv;
360
361 if (!priv->nn)
362 return;
363
364 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_VF);
365}
366
367static int
368nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
369 enum nfp_flower_cmsg_port_vnic_type vnic_type,
370 enum nfp_repr_type repr_type, unsigned int cnt)
371{
372 u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp);
373 struct nfp_flower_priv *priv = app->priv;
374 atomic_t *replies = &priv->reify_replies;
375 struct nfp_flower_repr_priv *repr_priv;
376 enum nfp_port_type port_type;
377 struct nfp_repr *nfp_repr;
378 struct nfp_reprs *reprs;
379 int i, err, reify_cnt;
380 const u8 queue = 0;
381
382 port_type = repr_type == NFP_REPR_TYPE_PF ? NFP_PORT_PF_PORT :
383 NFP_PORT_VF_PORT;
384
385 reprs = nfp_reprs_alloc(cnt);
386 if (!reprs)
387 return -ENOMEM;
388
389 for (i = 0; i < cnt; i++) {
390 struct net_device *repr;
391 struct nfp_port *port;
392 u32 port_id;
393
394 repr = nfp_repr_alloc(app);
395 if (!repr) {
396 err = -ENOMEM;
397 goto err_reprs_clean;
398 }
399
400 repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
401 if (!repr_priv) {
402 err = -ENOMEM;
403 nfp_repr_free(repr);
404 goto err_reprs_clean;
405 }
406
407 nfp_repr = netdev_priv(repr);
408 nfp_repr->app_priv = repr_priv;
409 repr_priv->nfp_repr = nfp_repr;
410
411
412 WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);
413
414 port = nfp_port_alloc(app, port_type, repr);
415 if (IS_ERR(port)) {
416 err = PTR_ERR(port);
417 kfree(repr_priv);
418 nfp_repr_free(repr);
419 goto err_reprs_clean;
420 }
421 if (repr_type == NFP_REPR_TYPE_PF) {
422 port->pf_id = i;
423 port->vnic = priv->nn->dp.ctrl_bar;
424 } else {
425 port->pf_id = 0;
426 port->vf_id = i;
427 port->vnic =
428 app->pf->vf_cfg_mem + i * NFP_NET_CFG_BAR_SZ;
429 }
430
431 eth_hw_addr_random(repr);
432
433 port_id = nfp_flower_cmsg_pcie_port(nfp_pcie, vnic_type,
434 i, queue);
435 err = nfp_repr_init(app, repr,
436 port_id, port, priv->nn->dp.netdev);
437 if (err) {
438 kfree(repr_priv);
439 nfp_port_free(port);
440 nfp_repr_free(repr);
441 goto err_reprs_clean;
442 }
443
444 RCU_INIT_POINTER(reprs->reprs[i], repr);
445 nfp_info(app->cpp, "%s%d Representor(%s) created\n",
446 repr_type == NFP_REPR_TYPE_PF ? "PF" : "VF", i,
447 repr->name);
448 }
449
450 nfp_app_reprs_set(app, repr_type, reprs);
451
452 atomic_set(replies, 0);
453 reify_cnt = nfp_flower_reprs_reify(app, repr_type, true);
454 if (reify_cnt < 0) {
455 err = reify_cnt;
456 nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
457 goto err_reprs_remove;
458 }
459
460 err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
461 if (err)
462 goto err_reprs_remove;
463
464 return 0;
465err_reprs_remove:
466 reprs = nfp_app_reprs_set(app, repr_type, NULL);
467err_reprs_clean:
468 nfp_reprs_clean_and_free(app, reprs);
469 return err;
470}
471
472static int nfp_flower_sriov_enable(struct nfp_app *app, int num_vfs)
473{
474 struct nfp_flower_priv *priv = app->priv;
475
476 if (!priv->nn)
477 return 0;
478
479 return nfp_flower_spawn_vnic_reprs(app,
480 NFP_FLOWER_CMSG_PORT_VNIC_TYPE_VF,
481 NFP_REPR_TYPE_VF, num_vfs);
482}
483
484static int
485nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
486{
487 struct nfp_eth_table *eth_tbl = app->pf->eth_tbl;
488 atomic_t *replies = &priv->reify_replies;
489 struct nfp_flower_repr_priv *repr_priv;
490 struct nfp_repr *nfp_repr;
491 struct sk_buff *ctrl_skb;
492 struct nfp_reprs *reprs;
493 int err, reify_cnt;
494 unsigned int i;
495
496 ctrl_skb = nfp_flower_cmsg_mac_repr_start(app, eth_tbl->count);
497 if (!ctrl_skb)
498 return -ENOMEM;
499
500 reprs = nfp_reprs_alloc(eth_tbl->max_index + 1);
501 if (!reprs) {
502 err = -ENOMEM;
503 goto err_free_ctrl_skb;
504 }
505
506 for (i = 0; i < eth_tbl->count; i++) {
507 unsigned int phys_port = eth_tbl->ports[i].index;
508 struct net_device *repr;
509 struct nfp_port *port;
510 u32 cmsg_port_id;
511
512 repr = nfp_repr_alloc(app);
513 if (!repr) {
514 err = -ENOMEM;
515 goto err_reprs_clean;
516 }
517
518 repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
519 if (!repr_priv) {
520 err = -ENOMEM;
521 nfp_repr_free(repr);
522 goto err_reprs_clean;
523 }
524
525 nfp_repr = netdev_priv(repr);
526 nfp_repr->app_priv = repr_priv;
527 repr_priv->nfp_repr = nfp_repr;
528
529 port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
530 if (IS_ERR(port)) {
531 err = PTR_ERR(port);
532 kfree(repr_priv);
533 nfp_repr_free(repr);
534 goto err_reprs_clean;
535 }
536 err = nfp_port_init_phy_port(app->pf, app, port, i);
537 if (err) {
538 kfree(repr_priv);
539 nfp_port_free(port);
540 nfp_repr_free(repr);
541 goto err_reprs_clean;
542 }
543
544 SET_NETDEV_DEV(repr, &priv->nn->pdev->dev);
545 nfp_net_get_mac_addr(app->pf, repr, port);
546
547 cmsg_port_id = nfp_flower_cmsg_phys_port(phys_port);
548 err = nfp_repr_init(app, repr,
549 cmsg_port_id, port, priv->nn->dp.netdev);
550 if (err) {
551 kfree(repr_priv);
552 nfp_port_free(port);
553 nfp_repr_free(repr);
554 goto err_reprs_clean;
555 }
556
557 nfp_flower_cmsg_mac_repr_add(ctrl_skb, i,
558 eth_tbl->ports[i].nbi,
559 eth_tbl->ports[i].base,
560 phys_port);
561
562 RCU_INIT_POINTER(reprs->reprs[phys_port], repr);
563 nfp_info(app->cpp, "Phys Port %d Representor(%s) created\n",
564 phys_port, repr->name);
565 }
566
567 nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, reprs);
568
569
570
571
572
573
574
575
576 atomic_set(replies, 0);
577 reify_cnt = nfp_flower_reprs_reify(app, NFP_REPR_TYPE_PHYS_PORT, true);
578 if (reify_cnt < 0) {
579 err = reify_cnt;
580 nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
581 goto err_reprs_remove;
582 }
583
584 err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
585 if (err)
586 goto err_reprs_remove;
587
588 nfp_ctrl_tx(app->ctrl, ctrl_skb);
589
590 return 0;
591err_reprs_remove:
592 reprs = nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, NULL);
593err_reprs_clean:
594 nfp_reprs_clean_and_free(app, reprs);
595err_free_ctrl_skb:
596 kfree_skb(ctrl_skb);
597 return err;
598}
599
600static int nfp_flower_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
601 unsigned int id)
602{
603 if (id > 0) {
604 nfp_warn(app->cpp, "FlowerNIC doesn't support more than one data vNIC\n");
605 goto err_invalid_port;
606 }
607
608 eth_hw_addr_random(nn->dp.netdev);
609 netif_keep_dst(nn->dp.netdev);
610 nn->vnic_no_name = true;
611
612 return 0;
613
614err_invalid_port:
615 nn->port = nfp_port_alloc(app, NFP_PORT_INVALID, nn->dp.netdev);
616 return PTR_ERR_OR_ZERO(nn->port);
617}
618
619static void nfp_flower_vnic_clean(struct nfp_app *app, struct nfp_net *nn)
620{
621 struct nfp_flower_priv *priv = app->priv;
622
623 if (app->pf->num_vfs)
624 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_VF);
625 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PF);
626 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PHYS_PORT);
627
628 priv->nn = NULL;
629}
630
631static int nfp_flower_vnic_init(struct nfp_app *app, struct nfp_net *nn)
632{
633 struct nfp_flower_priv *priv = app->priv;
634 int err;
635
636 priv->nn = nn;
637
638 err = nfp_flower_spawn_phy_reprs(app, app->priv);
639 if (err)
640 goto err_clear_nn;
641
642 err = nfp_flower_spawn_vnic_reprs(app,
643 NFP_FLOWER_CMSG_PORT_VNIC_TYPE_PF,
644 NFP_REPR_TYPE_PF, 1);
645 if (err)
646 goto err_destroy_reprs_phy;
647
648 if (app->pf->num_vfs) {
649 err = nfp_flower_spawn_vnic_reprs(app,
650 NFP_FLOWER_CMSG_PORT_VNIC_TYPE_VF,
651 NFP_REPR_TYPE_VF,
652 app->pf->num_vfs);
653 if (err)
654 goto err_destroy_reprs_pf;
655 }
656
657 return 0;
658
659err_destroy_reprs_pf:
660 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PF);
661err_destroy_reprs_phy:
662 nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PHYS_PORT);
663err_clear_nn:
664 priv->nn = NULL;
665 return err;
666}
667
668static void nfp_flower_wait_host_bit(struct nfp_app *app)
669{
670 unsigned long err_at;
671 u64 feat;
672 int err;
673
674
675 err_at = jiffies + msecs_to_jiffies(100);
676 do {
677 feat = nfp_rtsym_read_le(app->pf->rtbl,
678 "_abi_flower_combined_features_global",
679 &err);
680 if (time_is_before_eq_jiffies(err_at)) {
681 nfp_warn(app->cpp,
682 "HOST_ACK bit not propagated in FW.\n");
683 break;
684 }
685 usleep_range(1000, 2000);
686 } while (!err && !(feat & NFP_FL_FEATS_HOST_ACK));
687
688 if (err)
689 nfp_warn(app->cpp,
690 "Could not read global features entry from FW\n");
691}
692
693static int nfp_flower_sync_feature_bits(struct nfp_app *app)
694{
695 struct nfp_flower_priv *app_priv = app->priv;
696 int err;
697
698
699 err = nfp_rtsym_write_le(app->pf->rtbl, "_abi_flower_host_mask",
700 app_priv->flower_ext_feats |
701 NFP_FL_FEATS_HOST_ACK);
702 if (!err)
703 nfp_flower_wait_host_bit(app);
704 else if (err != -ENOENT)
705 return err;
706
707
708 err = nfp_rtsym_write_le(app->pf->rtbl,
709 "_abi_flower_balance_sync_enable", 1);
710 if (!err) {
711 app_priv->flower_en_feats |= NFP_FL_ENABLE_LAG;
712 nfp_flower_lag_init(&app_priv->nfp_lag);
713 } else if (err == -ENOENT) {
714 nfp_warn(app->cpp, "LAG not supported by FW.\n");
715 } else {
716 return err;
717 }
718
719 if (app_priv->flower_ext_feats & NFP_FL_FEATS_FLOW_MOD) {
720
721 err = nfp_rtsym_write_le(app->pf->rtbl,
722 "_abi_flower_merge_hint_enable", 1);
723 if (!err) {
724 app_priv->flower_en_feats |= NFP_FL_ENABLE_FLOW_MERGE;
725 nfp_flower_internal_port_init(app_priv);
726 } else if (err == -ENOENT) {
727 nfp_warn(app->cpp,
728 "Flow merge not supported by FW.\n");
729 } else {
730 return err;
731 }
732 } else {
733 nfp_warn(app->cpp, "Flow mod/merge not supported by FW.\n");
734 }
735
736 return 0;
737}
738
739static int nfp_flower_init(struct nfp_app *app)
740{
741 u64 version, features, ctx_count, num_mems;
742 const struct nfp_pf *pf = app->pf;
743 struct nfp_flower_priv *app_priv;
744 int err;
745
746 if (!pf->eth_tbl) {
747 nfp_warn(app->cpp, "FlowerNIC requires eth table\n");
748 return -EINVAL;
749 }
750
751 if (!pf->mac_stats_bar) {
752 nfp_warn(app->cpp, "FlowerNIC requires mac_stats BAR\n");
753 return -EINVAL;
754 }
755
756 if (!pf->vf_cfg_bar) {
757 nfp_warn(app->cpp, "FlowerNIC requires vf_cfg BAR\n");
758 return -EINVAL;
759 }
760
761 version = nfp_rtsym_read_le(app->pf->rtbl, "hw_flower_version", &err);
762 if (err) {
763 nfp_warn(app->cpp, "FlowerNIC requires hw_flower_version memory symbol\n");
764 return err;
765 }
766
767 num_mems = nfp_rtsym_read_le(app->pf->rtbl, "CONFIG_FC_HOST_CTX_SPLIT",
768 &err);
769 if (err) {
770 nfp_warn(app->cpp,
771 "FlowerNIC: unsupported host context memory: %d\n",
772 err);
773 err = 0;
774 num_mems = 1;
775 }
776
777 if (!FIELD_FIT(NFP_FL_STAT_ID_MU_NUM, num_mems) || !num_mems) {
778 nfp_warn(app->cpp,
779 "FlowerNIC: invalid host context memory: %llu\n",
780 num_mems);
781 return -EINVAL;
782 }
783
784 ctx_count = nfp_rtsym_read_le(app->pf->rtbl, "CONFIG_FC_HOST_CTX_COUNT",
785 &err);
786 if (err) {
787 nfp_warn(app->cpp,
788 "FlowerNIC: unsupported host context count: %d\n",
789 err);
790 err = 0;
791 ctx_count = BIT(17);
792 }
793
794
795 if (version != NFP_FLOWER_ALLOWED_VER) {
796 nfp_warn(app->cpp, "FlowerNIC: unsupported firmware version\n");
797 return -EINVAL;
798 }
799
800 app_priv = vzalloc(sizeof(struct nfp_flower_priv));
801 if (!app_priv)
802 return -ENOMEM;
803
804 app_priv->total_mem_units = num_mems;
805 app_priv->active_mem_unit = 0;
806 app_priv->stats_ring_size = roundup_pow_of_two(ctx_count);
807 app->priv = app_priv;
808 app_priv->app = app;
809 skb_queue_head_init(&app_priv->cmsg_skbs_high);
810 skb_queue_head_init(&app_priv->cmsg_skbs_low);
811 INIT_WORK(&app_priv->cmsg_work, nfp_flower_cmsg_process_rx);
812 init_waitqueue_head(&app_priv->reify_wait_queue);
813
814 init_waitqueue_head(&app_priv->mtu_conf.wait_q);
815 spin_lock_init(&app_priv->mtu_conf.lock);
816
817 err = nfp_flower_metadata_init(app, ctx_count, num_mems);
818 if (err)
819 goto err_free_app_priv;
820
821
822 features = nfp_rtsym_read_le(app->pf->rtbl,
823 "_abi_flower_extra_features", &err);
824 if (err)
825 app_priv->flower_ext_feats = 0;
826 else
827 app_priv->flower_ext_feats = features & NFP_FL_FEATS_HOST;
828
829 err = nfp_flower_sync_feature_bits(app);
830 if (err)
831 goto err_cleanup;
832
833 if (app_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)
834 nfp_flower_qos_init(app);
835
836 INIT_LIST_HEAD(&app_priv->indr_block_cb_priv);
837 INIT_LIST_HEAD(&app_priv->non_repr_priv);
838 app_priv->pre_tun_rule_cnt = 0;
839
840 return 0;
841
842err_cleanup:
843 if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG)
844 nfp_flower_lag_cleanup(&app_priv->nfp_lag);
845 nfp_flower_metadata_cleanup(app);
846err_free_app_priv:
847 vfree(app->priv);
848 return err;
849}
850
851static void nfp_flower_clean(struct nfp_app *app)
852{
853 struct nfp_flower_priv *app_priv = app->priv;
854
855 skb_queue_purge(&app_priv->cmsg_skbs_high);
856 skb_queue_purge(&app_priv->cmsg_skbs_low);
857 flush_work(&app_priv->cmsg_work);
858
859 if (app_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)
860 nfp_flower_qos_cleanup(app);
861
862 if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG)
863 nfp_flower_lag_cleanup(&app_priv->nfp_lag);
864
865 if (app_priv->flower_en_feats & NFP_FL_ENABLE_FLOW_MERGE)
866 nfp_flower_internal_port_cleanup(app_priv);
867
868 nfp_flower_metadata_cleanup(app);
869 vfree(app->priv);
870 app->priv = NULL;
871}
872
873static bool nfp_flower_check_ack(struct nfp_flower_priv *app_priv)
874{
875 bool ret;
876
877 spin_lock_bh(&app_priv->mtu_conf.lock);
878 ret = app_priv->mtu_conf.ack;
879 spin_unlock_bh(&app_priv->mtu_conf.lock);
880
881 return ret;
882}
883
884static int
885nfp_flower_repr_change_mtu(struct nfp_app *app, struct net_device *netdev,
886 int new_mtu)
887{
888 struct nfp_flower_priv *app_priv = app->priv;
889 struct nfp_repr *repr = netdev_priv(netdev);
890 int err;
891
892
893 if (repr->port->type != NFP_PORT_PHYS_PORT)
894 return 0;
895
896 if (!(app_priv->flower_ext_feats & NFP_FL_NBI_MTU_SETTING)) {
897 nfp_err(app->cpp, "Physical port MTU setting not supported\n");
898 return -EINVAL;
899 }
900
901 spin_lock_bh(&app_priv->mtu_conf.lock);
902 app_priv->mtu_conf.ack = false;
903 app_priv->mtu_conf.requested_val = new_mtu;
904 app_priv->mtu_conf.portnum = repr->dst->u.port_info.port_id;
905 spin_unlock_bh(&app_priv->mtu_conf.lock);
906
907 err = nfp_flower_cmsg_portmod(repr, netif_carrier_ok(netdev), new_mtu,
908 true);
909 if (err) {
910 spin_lock_bh(&app_priv->mtu_conf.lock);
911 app_priv->mtu_conf.requested_val = 0;
912 spin_unlock_bh(&app_priv->mtu_conf.lock);
913 return err;
914 }
915
916
917 if (!wait_event_timeout(app_priv->mtu_conf.wait_q,
918 nfp_flower_check_ack(app_priv),
919 NFP_FL_REPLY_TIMEOUT)) {
920 spin_lock_bh(&app_priv->mtu_conf.lock);
921 app_priv->mtu_conf.requested_val = 0;
922 spin_unlock_bh(&app_priv->mtu_conf.lock);
923 nfp_warn(app->cpp, "MTU change not verified with fw\n");
924 return -EIO;
925 }
926
927 return 0;
928}
929
930static int nfp_flower_start(struct nfp_app *app)
931{
932 struct nfp_flower_priv *app_priv = app->priv;
933 int err;
934
935 if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG) {
936 err = nfp_flower_lag_reset(&app_priv->nfp_lag);
937 if (err)
938 return err;
939 }
940
941 err = flow_indr_dev_register(nfp_flower_indr_setup_tc_cb, app);
942 if (err)
943 return err;
944
945 err = nfp_tunnel_config_start(app);
946 if (err)
947 goto err_tunnel_config;
948
949 return 0;
950
951err_tunnel_config:
952 flow_indr_dev_unregister(nfp_flower_indr_setup_tc_cb, app,
953 nfp_flower_setup_indr_tc_release);
954 return err;
955}
956
957static void nfp_flower_stop(struct nfp_app *app)
958{
959 nfp_tunnel_config_stop(app);
960
961 flow_indr_dev_unregister(nfp_flower_indr_setup_tc_cb, app,
962 nfp_flower_setup_indr_tc_release);
963}
964
965static int
966nfp_flower_netdev_event(struct nfp_app *app, struct net_device *netdev,
967 unsigned long event, void *ptr)
968{
969 struct nfp_flower_priv *app_priv = app->priv;
970 int ret;
971
972 if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG) {
973 ret = nfp_flower_lag_netdev_event(app_priv, netdev, event, ptr);
974 if (ret & NOTIFY_STOP_MASK)
975 return ret;
976 }
977
978 ret = nfp_flower_internal_port_event_handler(app, netdev, event);
979 if (ret & NOTIFY_STOP_MASK)
980 return ret;
981
982 return nfp_tunnel_mac_event_handler(app, netdev, event, ptr);
983}
984
985const struct nfp_app_type app_flower = {
986 .id = NFP_APP_FLOWER_NIC,
987 .name = "flower",
988
989 .ctrl_cap_mask = ~0U,
990 .ctrl_has_meta = true,
991
992 .extra_cap = nfp_flower_extra_cap,
993
994 .init = nfp_flower_init,
995 .clean = nfp_flower_clean,
996
997 .repr_change_mtu = nfp_flower_repr_change_mtu,
998
999 .vnic_alloc = nfp_flower_vnic_alloc,
1000 .vnic_init = nfp_flower_vnic_init,
1001 .vnic_clean = nfp_flower_vnic_clean,
1002
1003 .repr_preclean = nfp_flower_repr_netdev_preclean,
1004 .repr_clean = nfp_flower_repr_netdev_clean,
1005
1006 .repr_open = nfp_flower_repr_netdev_open,
1007 .repr_stop = nfp_flower_repr_netdev_stop,
1008
1009 .start = nfp_flower_start,
1010 .stop = nfp_flower_stop,
1011
1012 .netdev_event = nfp_flower_netdev_event,
1013
1014 .ctrl_msg_rx = nfp_flower_cmsg_rx,
1015
1016 .sriov_enable = nfp_flower_sriov_enable,
1017 .sriov_disable = nfp_flower_sriov_disable,
1018
1019 .eswitch_mode_get = eswitch_mode_get,
1020 .dev_get = nfp_flower_dev_get,
1021
1022 .setup_tc = nfp_flower_setup_tc,
1023};
1024
