1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * DPAA2 Ethernet Switch driver |
4 | * |
5 | * Copyright 2014-2016 Freescale Semiconductor Inc. |
6 | * Copyright 2017-2021 NXP |
7 | * |
8 | */ |
9 | |
10 | #include <linux/module.h> |
11 | |
12 | #include <linux/interrupt.h> |
13 | #include <linux/kthread.h> |
14 | #include <linux/workqueue.h> |
15 | #include <linux/iommu.h> |
16 | #include <net/pkt_cls.h> |
17 | |
18 | #include <linux/fsl/mc.h> |
19 | |
20 | #include "dpaa2-switch.h" |
21 | |
22 | /* Minimal supported DPSW version */ |
23 | #define DPSW_MIN_VER_MAJOR 8 |
24 | #define DPSW_MIN_VER_MINOR 9 |
25 | |
26 | #define DEFAULT_VLAN_ID 1 |
27 | |
28 | static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv) |
29 | { |
30 | return port_priv->fdb->fdb_id; |
31 | } |
32 | |
33 | static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw) |
34 | { |
35 | int i; |
36 | |
37 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) |
38 | if (!ethsw->fdbs[i].in_use) |
39 | return ðsw->fdbs[i]; |
40 | return NULL; |
41 | } |
42 | |
43 | static struct dpaa2_switch_filter_block * |
44 | dpaa2_switch_filter_block_get_unused(struct ethsw_core *ethsw) |
45 | { |
46 | int i; |
47 | |
48 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) |
49 | if (!ethsw->filter_blocks[i].in_use) |
50 | return ðsw->filter_blocks[i]; |
51 | return NULL; |
52 | } |
53 | |
54 | static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv, |
55 | struct net_device *bridge_dev) |
56 | { |
57 | struct ethsw_port_priv *other_port_priv = NULL; |
58 | struct dpaa2_switch_fdb *fdb; |
59 | struct net_device *other_dev; |
60 | struct list_head *iter; |
61 | |
62 | /* If we leave a bridge (bridge_dev is NULL), find an unused |
63 | * FDB and use that. |
64 | */ |
65 | if (!bridge_dev) { |
66 | fdb = dpaa2_switch_fdb_get_unused(ethsw: port_priv->ethsw_data); |
67 | |
68 | /* If there is no unused FDB, we must be the last port that |
69 | * leaves the last bridge, all the others are standalone. We |
70 | * can just keep the FDB that we already have. |
71 | */ |
72 | |
73 | if (!fdb) { |
74 | port_priv->fdb->bridge_dev = NULL; |
75 | return 0; |
76 | } |
77 | |
78 | port_priv->fdb = fdb; |
79 | port_priv->fdb->in_use = true; |
80 | port_priv->fdb->bridge_dev = NULL; |
81 | return 0; |
82 | } |
83 | |
84 | /* The below call to netdev_for_each_lower_dev() demands the RTNL lock |
85 | * being held. Assert on it so that it's easier to catch new code |
86 | * paths that reach this point without the RTNL lock. |
87 | */ |
88 | ASSERT_RTNL(); |
89 | |
90 | /* If part of a bridge, use the FDB of the first dpaa2 switch interface |
91 | * to be present in that bridge |
92 | */ |
93 | netdev_for_each_lower_dev(bridge_dev, other_dev, iter) { |
94 | if (!dpaa2_switch_port_dev_check(netdev: other_dev)) |
95 | continue; |
96 | |
97 | if (other_dev == port_priv->netdev) |
98 | continue; |
99 | |
100 | other_port_priv = netdev_priv(dev: other_dev); |
101 | break; |
102 | } |
103 | |
104 | /* The current port is about to change its FDB to the one used by the |
105 | * first port that joined the bridge. |
106 | */ |
107 | if (other_port_priv) { |
108 | /* The previous FDB is about to become unused, since the |
109 | * interface is no longer standalone. |
110 | */ |
111 | port_priv->fdb->in_use = false; |
112 | port_priv->fdb->bridge_dev = NULL; |
113 | |
114 | /* Get a reference to the new FDB */ |
115 | port_priv->fdb = other_port_priv->fdb; |
116 | } |
117 | |
118 | /* Keep track of the new upper bridge device */ |
119 | port_priv->fdb->bridge_dev = bridge_dev; |
120 | |
121 | return 0; |
122 | } |
123 | |
124 | static void dpaa2_switch_fdb_get_flood_cfg(struct ethsw_core *ethsw, u16 fdb_id, |
125 | enum dpsw_flood_type type, |
126 | struct dpsw_egress_flood_cfg *cfg) |
127 | { |
128 | int i = 0, j; |
129 | |
130 | memset(cfg, 0, sizeof(*cfg)); |
131 | |
132 | /* Add all the DPAA2 switch ports found in the same bridging domain to |
133 | * the egress flooding domain |
134 | */ |
135 | for (j = 0; j < ethsw->sw_attr.num_ifs; j++) { |
136 | if (!ethsw->ports[j]) |
137 | continue; |
138 | if (ethsw->ports[j]->fdb->fdb_id != fdb_id) |
139 | continue; |
140 | |
141 | if (type == DPSW_BROADCAST && ethsw->ports[j]->bcast_flood) |
142 | cfg->if_id[i++] = ethsw->ports[j]->idx; |
143 | else if (type == DPSW_FLOODING && ethsw->ports[j]->ucast_flood) |
144 | cfg->if_id[i++] = ethsw->ports[j]->idx; |
145 | } |
146 | |
147 | /* Add the CTRL interface to the egress flooding domain */ |
148 | cfg->if_id[i++] = ethsw->sw_attr.num_ifs; |
149 | |
150 | cfg->fdb_id = fdb_id; |
151 | cfg->flood_type = type; |
152 | cfg->num_ifs = i; |
153 | } |
154 | |
155 | static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id) |
156 | { |
157 | struct dpsw_egress_flood_cfg flood_cfg; |
158 | int err; |
159 | |
160 | /* Setup broadcast flooding domain */ |
161 | dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, type: DPSW_BROADCAST, cfg: &flood_cfg); |
162 | err = dpsw_set_egress_flood(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
163 | cfg: &flood_cfg); |
164 | if (err) { |
165 | dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n" , err); |
166 | return err; |
167 | } |
168 | |
169 | /* Setup unknown flooding domain */ |
170 | dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, type: DPSW_FLOODING, cfg: &flood_cfg); |
171 | err = dpsw_set_egress_flood(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
172 | cfg: &flood_cfg); |
173 | if (err) { |
174 | dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n" , err); |
175 | return err; |
176 | } |
177 | |
178 | return 0; |
179 | } |
180 | |
181 | static void *dpaa2_iova_to_virt(struct iommu_domain *domain, |
182 | dma_addr_t iova_addr) |
183 | { |
184 | phys_addr_t phys_addr; |
185 | |
186 | phys_addr = domain ? iommu_iova_to_phys(domain, iova: iova_addr) : iova_addr; |
187 | |
188 | return phys_to_virt(address: phys_addr); |
189 | } |
190 | |
191 | static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid) |
192 | { |
193 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
194 | struct dpsw_vlan_cfg vcfg = {0}; |
195 | int err; |
196 | |
197 | vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
198 | err = dpsw_vlan_add(mc_io: ethsw->mc_io, cmd_flags: 0, |
199 | token: ethsw->dpsw_handle, vlan_id: vid, cfg: &vcfg); |
200 | if (err) { |
201 | dev_err(ethsw->dev, "dpsw_vlan_add err %d\n" , err); |
202 | return err; |
203 | } |
204 | ethsw->vlans[vid] = ETHSW_VLAN_MEMBER; |
205 | |
206 | return 0; |
207 | } |
208 | |
209 | static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv) |
210 | { |
211 | struct net_device *netdev = port_priv->netdev; |
212 | struct dpsw_link_state state; |
213 | int err; |
214 | |
215 | err = dpsw_if_get_link_state(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
216 | token: port_priv->ethsw_data->dpsw_handle, |
217 | if_id: port_priv->idx, state: &state); |
218 | if (err) { |
219 | netdev_err(dev: netdev, format: "dpsw_if_get_link_state() err %d\n" , err); |
220 | return true; |
221 | } |
222 | |
223 | WARN_ONCE(state.up > 1, "Garbage read into link_state" ); |
224 | |
225 | return state.up ? true : false; |
226 | } |
227 | |
228 | static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid) |
229 | { |
230 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
231 | struct net_device *netdev = port_priv->netdev; |
232 | struct dpsw_tci_cfg tci_cfg = { 0 }; |
233 | bool up; |
234 | int err, ret; |
235 | |
236 | err = dpsw_if_get_tci(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
237 | if_id: port_priv->idx, cfg: &tci_cfg); |
238 | if (err) { |
239 | netdev_err(dev: netdev, format: "dpsw_if_get_tci err %d\n" , err); |
240 | return err; |
241 | } |
242 | |
243 | tci_cfg.vlan_id = pvid; |
244 | |
245 | /* Interface needs to be down to change PVID */ |
246 | up = dpaa2_switch_port_is_up(port_priv); |
247 | if (up) { |
248 | err = dpsw_if_disable(mc_io: ethsw->mc_io, cmd_flags: 0, |
249 | token: ethsw->dpsw_handle, |
250 | if_id: port_priv->idx); |
251 | if (err) { |
252 | netdev_err(dev: netdev, format: "dpsw_if_disable err %d\n" , err); |
253 | return err; |
254 | } |
255 | } |
256 | |
257 | err = dpsw_if_set_tci(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
258 | if_id: port_priv->idx, cfg: &tci_cfg); |
259 | if (err) { |
260 | netdev_err(dev: netdev, format: "dpsw_if_set_tci err %d\n" , err); |
261 | goto set_tci_error; |
262 | } |
263 | |
264 | /* Delete previous PVID info and mark the new one */ |
265 | port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID; |
266 | port_priv->vlans[pvid] |= ETHSW_VLAN_PVID; |
267 | port_priv->pvid = pvid; |
268 | |
269 | set_tci_error: |
270 | if (up) { |
271 | ret = dpsw_if_enable(mc_io: ethsw->mc_io, cmd_flags: 0, |
272 | token: ethsw->dpsw_handle, |
273 | if_id: port_priv->idx); |
274 | if (ret) { |
275 | netdev_err(dev: netdev, format: "dpsw_if_enable err %d\n" , ret); |
276 | return ret; |
277 | } |
278 | } |
279 | |
280 | return err; |
281 | } |
282 | |
283 | static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv, |
284 | u16 vid, u16 flags) |
285 | { |
286 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
287 | struct net_device *netdev = port_priv->netdev; |
288 | struct dpsw_vlan_if_cfg vcfg = {0}; |
289 | int err; |
290 | |
291 | if (port_priv->vlans[vid]) { |
292 | netdev_err(dev: netdev, format: "VLAN %d already configured\n" , vid); |
293 | return -EEXIST; |
294 | } |
295 | |
296 | /* If hit, this VLAN rule will lead the packet into the FDB table |
297 | * specified in the vlan configuration below |
298 | */ |
299 | vcfg.num_ifs = 1; |
300 | vcfg.if_id[0] = port_priv->idx; |
301 | vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
302 | vcfg.options |= DPSW_VLAN_ADD_IF_OPT_FDB_ID; |
303 | err = dpsw_vlan_add_if(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, vlan_id: vid, cfg: &vcfg); |
304 | if (err) { |
305 | netdev_err(dev: netdev, format: "dpsw_vlan_add_if err %d\n" , err); |
306 | return err; |
307 | } |
308 | |
309 | port_priv->vlans[vid] = ETHSW_VLAN_MEMBER; |
310 | |
311 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) { |
312 | err = dpsw_vlan_add_if_untagged(mc_io: ethsw->mc_io, cmd_flags: 0, |
313 | token: ethsw->dpsw_handle, |
314 | vlan_id: vid, cfg: &vcfg); |
315 | if (err) { |
316 | netdev_err(dev: netdev, |
317 | format: "dpsw_vlan_add_if_untagged err %d\n" , err); |
318 | return err; |
319 | } |
320 | port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED; |
321 | } |
322 | |
323 | if (flags & BRIDGE_VLAN_INFO_PVID) { |
324 | err = dpaa2_switch_port_set_pvid(port_priv, pvid: vid); |
325 | if (err) |
326 | return err; |
327 | } |
328 | |
329 | return 0; |
330 | } |
331 | |
332 | static enum dpsw_stp_state br_stp_state_to_dpsw(u8 state) |
333 | { |
334 | switch (state) { |
335 | case BR_STATE_DISABLED: |
336 | return DPSW_STP_STATE_DISABLED; |
337 | case BR_STATE_LISTENING: |
338 | return DPSW_STP_STATE_LISTENING; |
339 | case BR_STATE_LEARNING: |
340 | return DPSW_STP_STATE_LEARNING; |
341 | case BR_STATE_FORWARDING: |
342 | return DPSW_STP_STATE_FORWARDING; |
343 | case BR_STATE_BLOCKING: |
344 | return DPSW_STP_STATE_BLOCKING; |
345 | default: |
346 | return DPSW_STP_STATE_DISABLED; |
347 | } |
348 | } |
349 | |
350 | static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state) |
351 | { |
352 | struct dpsw_stp_cfg stp_cfg = {0}; |
353 | int err; |
354 | u16 vid; |
355 | |
356 | if (!netif_running(dev: port_priv->netdev) || state == port_priv->stp_state) |
357 | return 0; /* Nothing to do */ |
358 | |
359 | stp_cfg.state = br_stp_state_to_dpsw(state); |
360 | for (vid = 0; vid <= VLAN_VID_MASK; vid++) { |
361 | if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { |
362 | stp_cfg.vlan_id = vid; |
363 | err = dpsw_if_set_stp(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
364 | token: port_priv->ethsw_data->dpsw_handle, |
365 | if_id: port_priv->idx, cfg: &stp_cfg); |
366 | if (err) { |
367 | netdev_err(dev: port_priv->netdev, |
368 | format: "dpsw_if_set_stp err %d\n" , err); |
369 | return err; |
370 | } |
371 | } |
372 | } |
373 | |
374 | port_priv->stp_state = state; |
375 | |
376 | return 0; |
377 | } |
378 | |
379 | static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid) |
380 | { |
381 | struct ethsw_port_priv *ppriv_local = NULL; |
382 | int i, err; |
383 | |
384 | if (!ethsw->vlans[vid]) |
385 | return -ENOENT; |
386 | |
387 | err = dpsw_vlan_remove(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, vlan_id: vid); |
388 | if (err) { |
389 | dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n" , err); |
390 | return err; |
391 | } |
392 | ethsw->vlans[vid] = 0; |
393 | |
394 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
395 | ppriv_local = ethsw->ports[i]; |
396 | if (ppriv_local) |
397 | ppriv_local->vlans[vid] = 0; |
398 | } |
399 | |
400 | return 0; |
401 | } |
402 | |
403 | static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv, |
404 | const unsigned char *addr) |
405 | { |
406 | struct dpsw_fdb_unicast_cfg entry = {0}; |
407 | u16 fdb_id; |
408 | int err; |
409 | |
410 | entry.if_egress = port_priv->idx; |
411 | entry.type = DPSW_FDB_ENTRY_STATIC; |
412 | ether_addr_copy(dst: entry.mac_addr, src: addr); |
413 | |
414 | fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
415 | err = dpsw_fdb_add_unicast(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
416 | token: port_priv->ethsw_data->dpsw_handle, |
417 | fdb_id, cfg: &entry); |
418 | if (err) |
419 | netdev_err(dev: port_priv->netdev, |
420 | format: "dpsw_fdb_add_unicast err %d\n" , err); |
421 | return err; |
422 | } |
423 | |
424 | static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv, |
425 | const unsigned char *addr) |
426 | { |
427 | struct dpsw_fdb_unicast_cfg entry = {0}; |
428 | u16 fdb_id; |
429 | int err; |
430 | |
431 | entry.if_egress = port_priv->idx; |
432 | entry.type = DPSW_FDB_ENTRY_STATIC; |
433 | ether_addr_copy(dst: entry.mac_addr, src: addr); |
434 | |
435 | fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
436 | err = dpsw_fdb_remove_unicast(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
437 | token: port_priv->ethsw_data->dpsw_handle, |
438 | fdb_id, cfg: &entry); |
439 | /* Silently discard error for calling multiple times the del command */ |
440 | if (err && err != -ENXIO) |
441 | netdev_err(dev: port_priv->netdev, |
442 | format: "dpsw_fdb_remove_unicast err %d\n" , err); |
443 | return err; |
444 | } |
445 | |
446 | static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv, |
447 | const unsigned char *addr) |
448 | { |
449 | struct dpsw_fdb_multicast_cfg entry = {0}; |
450 | u16 fdb_id; |
451 | int err; |
452 | |
453 | ether_addr_copy(dst: entry.mac_addr, src: addr); |
454 | entry.type = DPSW_FDB_ENTRY_STATIC; |
455 | entry.num_ifs = 1; |
456 | entry.if_id[0] = port_priv->idx; |
457 | |
458 | fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
459 | err = dpsw_fdb_add_multicast(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
460 | token: port_priv->ethsw_data->dpsw_handle, |
461 | fdb_id, cfg: &entry); |
462 | /* Silently discard error for calling multiple times the add command */ |
463 | if (err && err != -ENXIO) |
464 | netdev_err(dev: port_priv->netdev, format: "dpsw_fdb_add_multicast err %d\n" , |
465 | err); |
466 | return err; |
467 | } |
468 | |
469 | static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv, |
470 | const unsigned char *addr) |
471 | { |
472 | struct dpsw_fdb_multicast_cfg entry = {0}; |
473 | u16 fdb_id; |
474 | int err; |
475 | |
476 | ether_addr_copy(dst: entry.mac_addr, src: addr); |
477 | entry.type = DPSW_FDB_ENTRY_STATIC; |
478 | entry.num_ifs = 1; |
479 | entry.if_id[0] = port_priv->idx; |
480 | |
481 | fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
482 | err = dpsw_fdb_remove_multicast(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
483 | token: port_priv->ethsw_data->dpsw_handle, |
484 | fdb_id, cfg: &entry); |
485 | /* Silently discard error for calling multiple times the del command */ |
486 | if (err && err != -ENAVAIL) |
487 | netdev_err(dev: port_priv->netdev, |
488 | format: "dpsw_fdb_remove_multicast err %d\n" , err); |
489 | return err; |
490 | } |
491 | |
492 | static void dpaa2_switch_port_get_stats(struct net_device *netdev, |
493 | struct rtnl_link_stats64 *stats) |
494 | { |
495 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
496 | u64 tmp; |
497 | int err; |
498 | |
499 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
500 | token: port_priv->ethsw_data->dpsw_handle, |
501 | if_id: port_priv->idx, |
502 | type: DPSW_CNT_ING_FRAME, counter: &stats->rx_packets); |
503 | if (err) |
504 | goto error; |
505 | |
506 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
507 | token: port_priv->ethsw_data->dpsw_handle, |
508 | if_id: port_priv->idx, |
509 | type: DPSW_CNT_EGR_FRAME, counter: &stats->tx_packets); |
510 | if (err) |
511 | goto error; |
512 | |
513 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
514 | token: port_priv->ethsw_data->dpsw_handle, |
515 | if_id: port_priv->idx, |
516 | type: DPSW_CNT_ING_BYTE, counter: &stats->rx_bytes); |
517 | if (err) |
518 | goto error; |
519 | |
520 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
521 | token: port_priv->ethsw_data->dpsw_handle, |
522 | if_id: port_priv->idx, |
523 | type: DPSW_CNT_EGR_BYTE, counter: &stats->tx_bytes); |
524 | if (err) |
525 | goto error; |
526 | |
527 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
528 | token: port_priv->ethsw_data->dpsw_handle, |
529 | if_id: port_priv->idx, |
530 | type: DPSW_CNT_ING_FRAME_DISCARD, |
531 | counter: &stats->rx_dropped); |
532 | if (err) |
533 | goto error; |
534 | |
535 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
536 | token: port_priv->ethsw_data->dpsw_handle, |
537 | if_id: port_priv->idx, |
538 | type: DPSW_CNT_ING_FLTR_FRAME, |
539 | counter: &tmp); |
540 | if (err) |
541 | goto error; |
542 | stats->rx_dropped += tmp; |
543 | |
544 | err = dpsw_if_get_counter(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
545 | token: port_priv->ethsw_data->dpsw_handle, |
546 | if_id: port_priv->idx, |
547 | type: DPSW_CNT_EGR_FRAME_DISCARD, |
548 | counter: &stats->tx_dropped); |
549 | if (err) |
550 | goto error; |
551 | |
552 | return; |
553 | |
554 | error: |
555 | netdev_err(dev: netdev, format: "dpsw_if_get_counter err %d\n" , err); |
556 | } |
557 | |
558 | static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev, |
559 | int attr_id) |
560 | { |
561 | return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT); |
562 | } |
563 | |
564 | static int dpaa2_switch_port_get_offload_stats(int attr_id, |
565 | const struct net_device *netdev, |
566 | void *sp) |
567 | { |
568 | switch (attr_id) { |
569 | case IFLA_OFFLOAD_XSTATS_CPU_HIT: |
570 | dpaa2_switch_port_get_stats(netdev: (struct net_device *)netdev, stats: sp); |
571 | return 0; |
572 | } |
573 | |
574 | return -EINVAL; |
575 | } |
576 | |
577 | static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu) |
578 | { |
579 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
580 | int err; |
581 | |
582 | err = dpsw_if_set_max_frame_length(mc_io: port_priv->ethsw_data->mc_io, |
583 | cmd_flags: 0, |
584 | token: port_priv->ethsw_data->dpsw_handle, |
585 | if_id: port_priv->idx, |
586 | frame_length: (u16)ETHSW_L2_MAX_FRM(mtu)); |
587 | if (err) { |
588 | netdev_err(dev: netdev, |
589 | format: "dpsw_if_set_max_frame_length() err %d\n" , err); |
590 | return err; |
591 | } |
592 | |
593 | netdev->mtu = mtu; |
594 | return 0; |
595 | } |
596 | |
597 | static int dpaa2_switch_port_link_state_update(struct net_device *netdev) |
598 | { |
599 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
600 | struct dpsw_link_state state; |
601 | int err; |
602 | |
603 | /* When we manage the MAC/PHY using phylink there is no need |
604 | * to manually update the netif_carrier. |
605 | * We can avoid locking because we are called from the "link changed" |
606 | * IRQ handler, which is the same as the "endpoint changed" IRQ handler |
607 | * (the writer to port_priv->mac), so we cannot race with it. |
608 | */ |
609 | if (dpaa2_mac_is_type_phy(mac: port_priv->mac)) |
610 | return 0; |
611 | |
612 | /* Interrupts are received even though no one issued an 'ifconfig up' |
613 | * on the switch interface. Ignore these link state update interrupts |
614 | */ |
615 | if (!netif_running(dev: netdev)) |
616 | return 0; |
617 | |
618 | err = dpsw_if_get_link_state(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
619 | token: port_priv->ethsw_data->dpsw_handle, |
620 | if_id: port_priv->idx, state: &state); |
621 | if (err) { |
622 | netdev_err(dev: netdev, format: "dpsw_if_get_link_state() err %d\n" , err); |
623 | return err; |
624 | } |
625 | |
626 | WARN_ONCE(state.up > 1, "Garbage read into link_state" ); |
627 | |
628 | if (state.up != port_priv->link_state) { |
629 | if (state.up) { |
630 | netif_carrier_on(dev: netdev); |
631 | netif_tx_start_all_queues(dev: netdev); |
632 | } else { |
633 | netif_carrier_off(dev: netdev); |
634 | netif_tx_stop_all_queues(dev: netdev); |
635 | } |
636 | port_priv->link_state = state.up; |
637 | } |
638 | |
639 | return 0; |
640 | } |
641 | |
642 | /* Manage all NAPI instances for the control interface. |
643 | * |
644 | * We only have one RX queue and one Tx Conf queue for all |
645 | * switch ports. Therefore, we only need to enable the NAPI instance once, the |
646 | * first time one of the switch ports runs .dev_open(). |
647 | */ |
648 | |
649 | static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw) |
650 | { |
651 | int i; |
652 | |
653 | /* Access to the ethsw->napi_users relies on the RTNL lock */ |
654 | ASSERT_RTNL(); |
655 | |
656 | /* a new interface is using the NAPI instance */ |
657 | ethsw->napi_users++; |
658 | |
659 | /* if there is already a user of the instance, return */ |
660 | if (ethsw->napi_users > 1) |
661 | return; |
662 | |
663 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) |
664 | napi_enable(n: ðsw->fq[i].napi); |
665 | } |
666 | |
667 | static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw) |
668 | { |
669 | int i; |
670 | |
671 | /* Access to the ethsw->napi_users relies on the RTNL lock */ |
672 | ASSERT_RTNL(); |
673 | |
674 | /* If we are not the last interface using the NAPI, return */ |
675 | ethsw->napi_users--; |
676 | if (ethsw->napi_users) |
677 | return; |
678 | |
679 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) |
680 | napi_disable(n: ðsw->fq[i].napi); |
681 | } |
682 | |
683 | static int dpaa2_switch_port_open(struct net_device *netdev) |
684 | { |
685 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
686 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
687 | int err; |
688 | |
689 | mutex_lock(&port_priv->mac_lock); |
690 | |
691 | if (!dpaa2_switch_port_is_type_phy(port_priv)) { |
692 | /* Explicitly set carrier off, otherwise |
693 | * netif_carrier_ok() will return true and cause 'ip link show' |
694 | * to report the LOWER_UP flag, even though the link |
695 | * notification wasn't even received. |
696 | */ |
697 | netif_carrier_off(dev: netdev); |
698 | } |
699 | |
700 | err = dpsw_if_enable(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
701 | token: port_priv->ethsw_data->dpsw_handle, |
702 | if_id: port_priv->idx); |
703 | if (err) { |
704 | mutex_unlock(lock: &port_priv->mac_lock); |
705 | netdev_err(dev: netdev, format: "dpsw_if_enable err %d\n" , err); |
706 | return err; |
707 | } |
708 | |
709 | dpaa2_switch_enable_ctrl_if_napi(ethsw); |
710 | |
711 | if (dpaa2_switch_port_is_type_phy(port_priv)) |
712 | dpaa2_mac_start(mac: port_priv->mac); |
713 | |
714 | mutex_unlock(lock: &port_priv->mac_lock); |
715 | |
716 | return 0; |
717 | } |
718 | |
719 | static int dpaa2_switch_port_stop(struct net_device *netdev) |
720 | { |
721 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
722 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
723 | int err; |
724 | |
725 | mutex_lock(&port_priv->mac_lock); |
726 | |
727 | if (dpaa2_switch_port_is_type_phy(port_priv)) { |
728 | dpaa2_mac_stop(mac: port_priv->mac); |
729 | } else { |
730 | netif_tx_stop_all_queues(dev: netdev); |
731 | netif_carrier_off(dev: netdev); |
732 | } |
733 | |
734 | mutex_unlock(lock: &port_priv->mac_lock); |
735 | |
736 | err = dpsw_if_disable(mc_io: port_priv->ethsw_data->mc_io, cmd_flags: 0, |
737 | token: port_priv->ethsw_data->dpsw_handle, |
738 | if_id: port_priv->idx); |
739 | if (err) { |
740 | netdev_err(dev: netdev, format: "dpsw_if_disable err %d\n" , err); |
741 | return err; |
742 | } |
743 | |
744 | dpaa2_switch_disable_ctrl_if_napi(ethsw); |
745 | |
746 | return 0; |
747 | } |
748 | |
749 | static int dpaa2_switch_port_parent_id(struct net_device *dev, |
750 | struct netdev_phys_item_id *ppid) |
751 | { |
752 | struct ethsw_port_priv *port_priv = netdev_priv(dev); |
753 | |
754 | ppid->id_len = 1; |
755 | ppid->id[0] = port_priv->ethsw_data->dev_id; |
756 | |
757 | return 0; |
758 | } |
759 | |
760 | static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name, |
761 | size_t len) |
762 | { |
763 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
764 | int err; |
765 | |
766 | err = snprintf(buf: name, size: len, fmt: "p%d" , port_priv->idx); |
767 | if (err >= len) |
768 | return -EINVAL; |
769 | |
770 | return 0; |
771 | } |
772 | |
773 | struct ethsw_dump_ctx { |
774 | struct net_device *dev; |
775 | struct sk_buff *skb; |
776 | struct netlink_callback *cb; |
777 | int idx; |
778 | }; |
779 | |
780 | static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry, |
781 | struct ethsw_dump_ctx *dump) |
782 | { |
783 | int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC; |
784 | u32 portid = NETLINK_CB(dump->cb->skb).portid; |
785 | u32 seq = dump->cb->nlh->nlmsg_seq; |
786 | struct nlmsghdr *nlh; |
787 | struct ndmsg *ndm; |
788 | |
789 | if (dump->idx < dump->cb->args[2]) |
790 | goto skip; |
791 | |
792 | nlh = nlmsg_put(skb: dump->skb, portid, seq, RTM_NEWNEIGH, |
793 | payload: sizeof(*ndm), NLM_F_MULTI); |
794 | if (!nlh) |
795 | return -EMSGSIZE; |
796 | |
797 | ndm = nlmsg_data(nlh); |
798 | ndm->ndm_family = AF_BRIDGE; |
799 | ndm->ndm_pad1 = 0; |
800 | ndm->ndm_pad2 = 0; |
801 | ndm->ndm_flags = NTF_SELF; |
802 | ndm->ndm_type = 0; |
803 | ndm->ndm_ifindex = dump->dev->ifindex; |
804 | ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP; |
805 | |
806 | if (nla_put(skb: dump->skb, attrtype: NDA_LLADDR, ETH_ALEN, data: entry->mac_addr)) |
807 | goto nla_put_failure; |
808 | |
809 | nlmsg_end(skb: dump->skb, nlh); |
810 | |
811 | skip: |
812 | dump->idx++; |
813 | return 0; |
814 | |
815 | nla_put_failure: |
816 | nlmsg_cancel(skb: dump->skb, nlh); |
817 | return -EMSGSIZE; |
818 | } |
819 | |
820 | static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry, |
821 | struct ethsw_port_priv *port_priv) |
822 | { |
823 | int idx = port_priv->idx; |
824 | int valid; |
825 | |
826 | if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) |
827 | valid = entry->if_info == port_priv->idx; |
828 | else |
829 | valid = entry->if_mask[idx / 8] & BIT(idx % 8); |
830 | |
831 | return valid; |
832 | } |
833 | |
834 | static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv, |
835 | dpaa2_switch_fdb_cb_t cb, void *data) |
836 | { |
837 | struct net_device *net_dev = port_priv->netdev; |
838 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
839 | struct device *dev = net_dev->dev.parent; |
840 | struct fdb_dump_entry *fdb_entries; |
841 | struct fdb_dump_entry fdb_entry; |
842 | dma_addr_t fdb_dump_iova; |
843 | u16 num_fdb_entries; |
844 | u32 fdb_dump_size; |
845 | int err = 0, i; |
846 | u8 *dma_mem; |
847 | u16 fdb_id; |
848 | |
849 | fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry); |
850 | dma_mem = kzalloc(size: fdb_dump_size, GFP_KERNEL); |
851 | if (!dma_mem) |
852 | return -ENOMEM; |
853 | |
854 | fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size, |
855 | DMA_FROM_DEVICE); |
856 | if (dma_mapping_error(dev, dma_addr: fdb_dump_iova)) { |
857 | netdev_err(dev: net_dev, format: "dma_map_single() failed\n" ); |
858 | err = -ENOMEM; |
859 | goto err_map; |
860 | } |
861 | |
862 | fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); |
863 | err = dpsw_fdb_dump(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, fdb_id, |
864 | iova_addr: fdb_dump_iova, iova_size: fdb_dump_size, num_entries: &num_fdb_entries); |
865 | if (err) { |
866 | netdev_err(dev: net_dev, format: "dpsw_fdb_dump() = %d\n" , err); |
867 | goto err_dump; |
868 | } |
869 | |
870 | dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE); |
871 | |
872 | fdb_entries = (struct fdb_dump_entry *)dma_mem; |
873 | for (i = 0; i < num_fdb_entries; i++) { |
874 | fdb_entry = fdb_entries[i]; |
875 | |
876 | err = cb(port_priv, &fdb_entry, data); |
877 | if (err) |
878 | goto end; |
879 | } |
880 | |
881 | end: |
882 | kfree(objp: dma_mem); |
883 | |
884 | return 0; |
885 | |
886 | err_dump: |
887 | dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE); |
888 | err_map: |
889 | kfree(objp: dma_mem); |
890 | return err; |
891 | } |
892 | |
893 | static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv, |
894 | struct fdb_dump_entry *fdb_entry, |
895 | void *data) |
896 | { |
897 | if (!dpaa2_switch_port_fdb_valid_entry(entry: fdb_entry, port_priv)) |
898 | return 0; |
899 | |
900 | return dpaa2_switch_fdb_dump_nl(entry: fdb_entry, dump: data); |
901 | } |
902 | |
903 | static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
904 | struct net_device *net_dev, |
905 | struct net_device *filter_dev, int *idx) |
906 | { |
907 | struct ethsw_port_priv *port_priv = netdev_priv(dev: net_dev); |
908 | struct ethsw_dump_ctx dump = { |
909 | .dev = net_dev, |
910 | .skb = skb, |
911 | .cb = cb, |
912 | .idx = *idx, |
913 | }; |
914 | int err; |
915 | |
916 | err = dpaa2_switch_fdb_iterate(port_priv, cb: dpaa2_switch_fdb_entry_dump, data: &dump); |
917 | *idx = dump.idx; |
918 | |
919 | return err; |
920 | } |
921 | |
922 | static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv, |
923 | struct fdb_dump_entry *fdb_entry, |
924 | void *data __always_unused) |
925 | { |
926 | if (!dpaa2_switch_port_fdb_valid_entry(entry: fdb_entry, port_priv)) |
927 | return 0; |
928 | |
929 | if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC)) |
930 | return 0; |
931 | |
932 | if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) |
933 | dpaa2_switch_port_fdb_del_uc(port_priv, addr: fdb_entry->mac_addr); |
934 | else |
935 | dpaa2_switch_port_fdb_del_mc(port_priv, addr: fdb_entry->mac_addr); |
936 | |
937 | return 0; |
938 | } |
939 | |
940 | static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv) |
941 | { |
942 | dpaa2_switch_fdb_iterate(port_priv, |
943 | cb: dpaa2_switch_fdb_entry_fast_age, NULL); |
944 | } |
945 | |
946 | static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto, |
947 | u16 vid) |
948 | { |
949 | struct switchdev_obj_port_vlan vlan = { |
950 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
951 | .vid = vid, |
952 | .obj.orig_dev = netdev, |
953 | /* This API only allows programming tagged, non-PVID VIDs */ |
954 | .flags = 0, |
955 | }; |
956 | |
957 | return dpaa2_switch_port_vlans_add(netdev, vlan: &vlan); |
958 | } |
959 | |
960 | static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto, |
961 | u16 vid) |
962 | { |
963 | struct switchdev_obj_port_vlan vlan = { |
964 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
965 | .vid = vid, |
966 | .obj.orig_dev = netdev, |
967 | /* This API only allows programming tagged, non-PVID VIDs */ |
968 | .flags = 0, |
969 | }; |
970 | |
971 | return dpaa2_switch_port_vlans_del(netdev, vlan: &vlan); |
972 | } |
973 | |
974 | static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv) |
975 | { |
976 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
977 | struct net_device *net_dev = port_priv->netdev; |
978 | struct device *dev = net_dev->dev.parent; |
979 | u8 mac_addr[ETH_ALEN]; |
980 | int err; |
981 | |
982 | if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR)) |
983 | return 0; |
984 | |
985 | /* Get firmware address, if any */ |
986 | err = dpsw_if_get_port_mac_addr(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
987 | if_id: port_priv->idx, mac_addr); |
988 | if (err) { |
989 | dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n" ); |
990 | return err; |
991 | } |
992 | |
993 | /* First check if firmware has any address configured by bootloader */ |
994 | if (!is_zero_ether_addr(addr: mac_addr)) { |
995 | eth_hw_addr_set(dev: net_dev, addr: mac_addr); |
996 | } else { |
997 | /* No MAC address configured, fill in net_dev->dev_addr |
998 | * with a random one |
999 | */ |
1000 | eth_hw_addr_random(dev: net_dev); |
1001 | dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n" ); |
1002 | |
1003 | /* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all |
1004 | * practical purposes, this will be our "permanent" mac address, |
1005 | * at least until the next reboot. This move will also permit |
1006 | * register_netdevice() to properly fill up net_dev->perm_addr. |
1007 | */ |
1008 | net_dev->addr_assign_type = NET_ADDR_PERM; |
1009 | } |
1010 | |
1011 | return 0; |
1012 | } |
1013 | |
1014 | static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw, |
1015 | const struct dpaa2_fd *fd) |
1016 | { |
1017 | struct device *dev = ethsw->dev; |
1018 | unsigned char *buffer_start; |
1019 | struct sk_buff **skbh, *skb; |
1020 | dma_addr_t fd_addr; |
1021 | |
1022 | fd_addr = dpaa2_fd_get_addr(fd); |
1023 | skbh = dpaa2_iova_to_virt(domain: ethsw->iommu_domain, iova_addr: fd_addr); |
1024 | |
1025 | skb = *skbh; |
1026 | buffer_start = (unsigned char *)skbh; |
1027 | |
1028 | dma_unmap_single(dev, fd_addr, |
1029 | skb_tail_pointer(skb) - buffer_start, |
1030 | DMA_TO_DEVICE); |
1031 | |
1032 | /* Move on with skb release */ |
1033 | dev_kfree_skb(skb); |
1034 | } |
1035 | |
1036 | static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw, |
1037 | struct sk_buff *skb, |
1038 | struct dpaa2_fd *fd) |
1039 | { |
1040 | struct device *dev = ethsw->dev; |
1041 | struct sk_buff **skbh; |
1042 | dma_addr_t addr; |
1043 | u8 *buff_start; |
1044 | void *hwa; |
1045 | |
1046 | buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET - |
1047 | DPAA2_SWITCH_TX_BUF_ALIGN, |
1048 | DPAA2_SWITCH_TX_BUF_ALIGN); |
1049 | |
1050 | /* Clear FAS to have consistent values for TX confirmation. It is |
1051 | * located in the first 8 bytes of the buffer's hardware annotation |
1052 | * area |
1053 | */ |
1054 | hwa = buff_start + DPAA2_SWITCH_SWA_SIZE; |
1055 | memset(hwa, 0, 8); |
1056 | |
1057 | /* Store a backpointer to the skb at the beginning of the buffer |
1058 | * (in the private data area) such that we can release it |
1059 | * on Tx confirm |
1060 | */ |
1061 | skbh = (struct sk_buff **)buff_start; |
1062 | *skbh = skb; |
1063 | |
1064 | addr = dma_map_single(dev, buff_start, |
1065 | skb_tail_pointer(skb) - buff_start, |
1066 | DMA_TO_DEVICE); |
1067 | if (unlikely(dma_mapping_error(dev, addr))) |
1068 | return -ENOMEM; |
1069 | |
1070 | /* Setup the FD fields */ |
1071 | memset(fd, 0, sizeof(*fd)); |
1072 | |
1073 | dpaa2_fd_set_addr(fd, addr); |
1074 | dpaa2_fd_set_offset(fd, offset: (u16)(skb->data - buff_start)); |
1075 | dpaa2_fd_set_len(fd, len: skb->len); |
1076 | dpaa2_fd_set_format(fd, format: dpaa2_fd_single); |
1077 | |
1078 | return 0; |
1079 | } |
1080 | |
1081 | static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb, |
1082 | struct net_device *net_dev) |
1083 | { |
1084 | struct ethsw_port_priv *port_priv = netdev_priv(dev: net_dev); |
1085 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1086 | int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES; |
1087 | struct dpaa2_fd fd; |
1088 | int err; |
1089 | |
1090 | if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) { |
1091 | struct sk_buff *ns; |
1092 | |
1093 | ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM); |
1094 | if (unlikely(!ns)) { |
1095 | net_err_ratelimited("%s: Error reallocating skb headroom\n" , net_dev->name); |
1096 | goto err_free_skb; |
1097 | } |
1098 | dev_consume_skb_any(skb); |
1099 | skb = ns; |
1100 | } |
1101 | |
1102 | /* We'll be holding a back-reference to the skb until Tx confirmation */ |
1103 | skb = skb_unshare(skb, GFP_ATOMIC); |
1104 | if (unlikely(!skb)) { |
1105 | /* skb_unshare() has already freed the skb */ |
1106 | net_err_ratelimited("%s: Error copying the socket buffer\n" , net_dev->name); |
1107 | goto err_exit; |
1108 | } |
1109 | |
1110 | /* At this stage, we do not support non-linear skbs so just try to |
1111 | * linearize the skb and if that's not working, just drop the packet. |
1112 | */ |
1113 | err = skb_linearize(skb); |
1114 | if (err) { |
1115 | net_err_ratelimited("%s: skb_linearize error (%d)!\n" , net_dev->name, err); |
1116 | goto err_free_skb; |
1117 | } |
1118 | |
1119 | err = dpaa2_switch_build_single_fd(ethsw, skb, fd: &fd); |
1120 | if (unlikely(err)) { |
1121 | net_err_ratelimited("%s: ethsw_build_*_fd() %d\n" , net_dev->name, err); |
1122 | goto err_free_skb; |
1123 | } |
1124 | |
1125 | do { |
1126 | err = dpaa2_io_service_enqueue_qd(NULL, |
1127 | qdid: port_priv->tx_qdid, |
1128 | prio: 8, qdbin: 0, fd: &fd); |
1129 | retries--; |
1130 | } while (err == -EBUSY && retries); |
1131 | |
1132 | if (unlikely(err < 0)) { |
1133 | dpaa2_switch_free_fd(ethsw, fd: &fd); |
1134 | goto err_exit; |
1135 | } |
1136 | |
1137 | return NETDEV_TX_OK; |
1138 | |
1139 | err_free_skb: |
1140 | dev_kfree_skb(skb); |
1141 | err_exit: |
1142 | return NETDEV_TX_OK; |
1143 | } |
1144 | |
1145 | static int |
1146 | dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block, |
1147 | struct flow_cls_offload *f) |
1148 | { |
1149 | switch (f->command) { |
1150 | case FLOW_CLS_REPLACE: |
1151 | return dpaa2_switch_cls_flower_replace(block: filter_block, cls: f); |
1152 | case FLOW_CLS_DESTROY: |
1153 | return dpaa2_switch_cls_flower_destroy(block: filter_block, cls: f); |
1154 | default: |
1155 | return -EOPNOTSUPP; |
1156 | } |
1157 | } |
1158 | |
1159 | static int |
1160 | dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block, |
1161 | struct tc_cls_matchall_offload *f) |
1162 | { |
1163 | switch (f->command) { |
1164 | case TC_CLSMATCHALL_REPLACE: |
1165 | return dpaa2_switch_cls_matchall_replace(block, cls: f); |
1166 | case TC_CLSMATCHALL_DESTROY: |
1167 | return dpaa2_switch_cls_matchall_destroy(block, cls: f); |
1168 | default: |
1169 | return -EOPNOTSUPP; |
1170 | } |
1171 | } |
1172 | |
1173 | static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type, |
1174 | void *type_data, |
1175 | void *cb_priv) |
1176 | { |
1177 | switch (type) { |
1178 | case TC_SETUP_CLSFLOWER: |
1179 | return dpaa2_switch_setup_tc_cls_flower(filter_block: cb_priv, f: type_data); |
1180 | case TC_SETUP_CLSMATCHALL: |
1181 | return dpaa2_switch_setup_tc_cls_matchall(block: cb_priv, f: type_data); |
1182 | default: |
1183 | return -EOPNOTSUPP; |
1184 | } |
1185 | } |
1186 | |
1187 | static LIST_HEAD(dpaa2_switch_block_cb_list); |
1188 | |
1189 | static int |
1190 | dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv, |
1191 | struct dpaa2_switch_filter_block *block) |
1192 | { |
1193 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1194 | struct net_device *netdev = port_priv->netdev; |
1195 | struct dpsw_acl_if_cfg acl_if_cfg; |
1196 | int err; |
1197 | |
1198 | if (port_priv->filter_block) |
1199 | return -EINVAL; |
1200 | |
1201 | acl_if_cfg.if_id[0] = port_priv->idx; |
1202 | acl_if_cfg.num_ifs = 1; |
1203 | err = dpsw_acl_add_if(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1204 | acl_id: block->acl_id, cfg: &acl_if_cfg); |
1205 | if (err) { |
1206 | netdev_err(dev: netdev, format: "dpsw_acl_add_if err %d\n" , err); |
1207 | return err; |
1208 | } |
1209 | |
1210 | block->ports |= BIT(port_priv->idx); |
1211 | port_priv->filter_block = block; |
1212 | |
1213 | return 0; |
1214 | } |
1215 | |
1216 | static int |
1217 | dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv, |
1218 | struct dpaa2_switch_filter_block *block) |
1219 | { |
1220 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1221 | struct net_device *netdev = port_priv->netdev; |
1222 | struct dpsw_acl_if_cfg acl_if_cfg; |
1223 | int err; |
1224 | |
1225 | if (port_priv->filter_block != block) |
1226 | return -EINVAL; |
1227 | |
1228 | acl_if_cfg.if_id[0] = port_priv->idx; |
1229 | acl_if_cfg.num_ifs = 1; |
1230 | err = dpsw_acl_remove_if(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1231 | acl_id: block->acl_id, cfg: &acl_if_cfg); |
1232 | if (err) { |
1233 | netdev_err(dev: netdev, format: "dpsw_acl_add_if err %d\n" , err); |
1234 | return err; |
1235 | } |
1236 | |
1237 | block->ports &= ~BIT(port_priv->idx); |
1238 | port_priv->filter_block = NULL; |
1239 | return 0; |
1240 | } |
1241 | |
1242 | static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv, |
1243 | struct dpaa2_switch_filter_block *block) |
1244 | { |
1245 | struct dpaa2_switch_filter_block *old_block = port_priv->filter_block; |
1246 | int err; |
1247 | |
1248 | /* Offload all the mirror entries found in the block on this new port |
1249 | * joining it. |
1250 | */ |
1251 | err = dpaa2_switch_block_offload_mirror(block, port_priv); |
1252 | if (err) |
1253 | return err; |
1254 | |
1255 | /* If the port is already bound to this ACL table then do nothing. This |
1256 | * can happen when this port is the first one to join a tc block |
1257 | */ |
1258 | if (port_priv->filter_block == block) |
1259 | return 0; |
1260 | |
1261 | err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block: old_block); |
1262 | if (err) |
1263 | return err; |
1264 | |
1265 | /* Mark the previous ACL table as being unused if this was the last |
1266 | * port that was using it. |
1267 | */ |
1268 | if (old_block->ports == 0) |
1269 | old_block->in_use = false; |
1270 | |
1271 | return dpaa2_switch_port_acl_tbl_bind(port_priv, block); |
1272 | } |
1273 | |
1274 | static int |
1275 | dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv, |
1276 | struct dpaa2_switch_filter_block *block) |
1277 | { |
1278 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1279 | struct dpaa2_switch_filter_block *new_block; |
1280 | int err; |
1281 | |
1282 | /* Unoffload all the mirror entries found in the block from the |
1283 | * port leaving it. |
1284 | */ |
1285 | err = dpaa2_switch_block_unoffload_mirror(block, port_priv); |
1286 | if (err) |
1287 | return err; |
1288 | |
1289 | /* We are the last port that leaves a block (an ACL table). |
1290 | * We'll continue to use this table. |
1291 | */ |
1292 | if (block->ports == BIT(port_priv->idx)) |
1293 | return 0; |
1294 | |
1295 | err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block); |
1296 | if (err) |
1297 | return err; |
1298 | |
1299 | if (block->ports == 0) |
1300 | block->in_use = false; |
1301 | |
1302 | new_block = dpaa2_switch_filter_block_get_unused(ethsw); |
1303 | new_block->in_use = true; |
1304 | return dpaa2_switch_port_acl_tbl_bind(port_priv, block: new_block); |
1305 | } |
1306 | |
1307 | static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev, |
1308 | struct flow_block_offload *f) |
1309 | { |
1310 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1311 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1312 | struct dpaa2_switch_filter_block *filter_block; |
1313 | struct flow_block_cb *block_cb; |
1314 | bool register_block = false; |
1315 | int err; |
1316 | |
1317 | block_cb = flow_block_cb_lookup(block: f->block, |
1318 | cb: dpaa2_switch_port_setup_tc_block_cb_ig, |
1319 | cb_ident: ethsw); |
1320 | |
1321 | if (!block_cb) { |
1322 | /* If the filter block is not already known, then this port |
1323 | * must be the first to join it. In this case, we can just |
1324 | * continue to use our private table |
1325 | */ |
1326 | filter_block = port_priv->filter_block; |
1327 | |
1328 | block_cb = flow_block_cb_alloc(cb: dpaa2_switch_port_setup_tc_block_cb_ig, |
1329 | cb_ident: ethsw, cb_priv: filter_block, NULL); |
1330 | if (IS_ERR(ptr: block_cb)) |
1331 | return PTR_ERR(ptr: block_cb); |
1332 | |
1333 | register_block = true; |
1334 | } else { |
1335 | filter_block = flow_block_cb_priv(block_cb); |
1336 | } |
1337 | |
1338 | flow_block_cb_incref(block_cb); |
1339 | err = dpaa2_switch_port_block_bind(port_priv, block: filter_block); |
1340 | if (err) |
1341 | goto err_block_bind; |
1342 | |
1343 | if (register_block) { |
1344 | flow_block_cb_add(block_cb, offload: f); |
1345 | list_add_tail(new: &block_cb->driver_list, |
1346 | head: &dpaa2_switch_block_cb_list); |
1347 | } |
1348 | |
1349 | return 0; |
1350 | |
1351 | err_block_bind: |
1352 | if (!flow_block_cb_decref(block_cb)) |
1353 | flow_block_cb_free(block_cb); |
1354 | return err; |
1355 | } |
1356 | |
1357 | static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev, |
1358 | struct flow_block_offload *f) |
1359 | { |
1360 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1361 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1362 | struct dpaa2_switch_filter_block *filter_block; |
1363 | struct flow_block_cb *block_cb; |
1364 | int err; |
1365 | |
1366 | block_cb = flow_block_cb_lookup(block: f->block, |
1367 | cb: dpaa2_switch_port_setup_tc_block_cb_ig, |
1368 | cb_ident: ethsw); |
1369 | if (!block_cb) |
1370 | return; |
1371 | |
1372 | filter_block = flow_block_cb_priv(block_cb); |
1373 | err = dpaa2_switch_port_block_unbind(port_priv, block: filter_block); |
1374 | if (!err && !flow_block_cb_decref(block_cb)) { |
1375 | flow_block_cb_remove(block_cb, offload: f); |
1376 | list_del(entry: &block_cb->driver_list); |
1377 | } |
1378 | } |
1379 | |
1380 | static int dpaa2_switch_setup_tc_block(struct net_device *netdev, |
1381 | struct flow_block_offload *f) |
1382 | { |
1383 | if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) |
1384 | return -EOPNOTSUPP; |
1385 | |
1386 | f->driver_block_list = &dpaa2_switch_block_cb_list; |
1387 | |
1388 | switch (f->command) { |
1389 | case FLOW_BLOCK_BIND: |
1390 | return dpaa2_switch_setup_tc_block_bind(netdev, f); |
1391 | case FLOW_BLOCK_UNBIND: |
1392 | dpaa2_switch_setup_tc_block_unbind(netdev, f); |
1393 | return 0; |
1394 | default: |
1395 | return -EOPNOTSUPP; |
1396 | } |
1397 | } |
1398 | |
1399 | static int dpaa2_switch_port_setup_tc(struct net_device *netdev, |
1400 | enum tc_setup_type type, |
1401 | void *type_data) |
1402 | { |
1403 | switch (type) { |
1404 | case TC_SETUP_BLOCK: { |
1405 | return dpaa2_switch_setup_tc_block(netdev, f: type_data); |
1406 | } |
1407 | default: |
1408 | return -EOPNOTSUPP; |
1409 | } |
1410 | |
1411 | return 0; |
1412 | } |
1413 | |
1414 | static const struct net_device_ops dpaa2_switch_port_ops = { |
1415 | .ndo_open = dpaa2_switch_port_open, |
1416 | .ndo_stop = dpaa2_switch_port_stop, |
1417 | |
1418 | .ndo_set_mac_address = eth_mac_addr, |
1419 | .ndo_get_stats64 = dpaa2_switch_port_get_stats, |
1420 | .ndo_change_mtu = dpaa2_switch_port_change_mtu, |
1421 | .ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats, |
1422 | .ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats, |
1423 | .ndo_fdb_dump = dpaa2_switch_port_fdb_dump, |
1424 | .ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add, |
1425 | .ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill, |
1426 | |
1427 | .ndo_start_xmit = dpaa2_switch_port_tx, |
1428 | .ndo_get_port_parent_id = dpaa2_switch_port_parent_id, |
1429 | .ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name, |
1430 | .ndo_setup_tc = dpaa2_switch_port_setup_tc, |
1431 | }; |
1432 | |
1433 | bool dpaa2_switch_port_dev_check(const struct net_device *netdev) |
1434 | { |
1435 | return netdev->netdev_ops == &dpaa2_switch_port_ops; |
1436 | } |
1437 | |
1438 | static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv) |
1439 | { |
1440 | struct fsl_mc_device *dpsw_port_dev, *dpmac_dev; |
1441 | struct dpaa2_mac *mac; |
1442 | int err; |
1443 | |
1444 | dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent); |
1445 | dpmac_dev = fsl_mc_get_endpoint(mc_dev: dpsw_port_dev, if_id: port_priv->idx); |
1446 | |
1447 | if (PTR_ERR(ptr: dpmac_dev) == -EPROBE_DEFER) |
1448 | return PTR_ERR(ptr: dpmac_dev); |
1449 | |
1450 | if (IS_ERR(ptr: dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) |
1451 | return 0; |
1452 | |
1453 | mac = kzalloc(size: sizeof(*mac), GFP_KERNEL); |
1454 | if (!mac) |
1455 | return -ENOMEM; |
1456 | |
1457 | mac->mc_dev = dpmac_dev; |
1458 | mac->mc_io = port_priv->ethsw_data->mc_io; |
1459 | mac->net_dev = port_priv->netdev; |
1460 | |
1461 | err = dpaa2_mac_open(mac); |
1462 | if (err) |
1463 | goto err_free_mac; |
1464 | |
1465 | if (dpaa2_mac_is_type_phy(mac)) { |
1466 | err = dpaa2_mac_connect(mac); |
1467 | if (err) { |
1468 | netdev_err(dev: port_priv->netdev, |
1469 | format: "Error connecting to the MAC endpoint %pe\n" , |
1470 | ERR_PTR(error: err)); |
1471 | goto err_close_mac; |
1472 | } |
1473 | } |
1474 | |
1475 | mutex_lock(&port_priv->mac_lock); |
1476 | port_priv->mac = mac; |
1477 | mutex_unlock(lock: &port_priv->mac_lock); |
1478 | |
1479 | return 0; |
1480 | |
1481 | err_close_mac: |
1482 | dpaa2_mac_close(mac); |
1483 | err_free_mac: |
1484 | kfree(objp: mac); |
1485 | return err; |
1486 | } |
1487 | |
1488 | static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv) |
1489 | { |
1490 | struct dpaa2_mac *mac; |
1491 | |
1492 | mutex_lock(&port_priv->mac_lock); |
1493 | mac = port_priv->mac; |
1494 | port_priv->mac = NULL; |
1495 | mutex_unlock(lock: &port_priv->mac_lock); |
1496 | |
1497 | if (!mac) |
1498 | return; |
1499 | |
1500 | if (dpaa2_mac_is_type_phy(mac)) |
1501 | dpaa2_mac_disconnect(mac); |
1502 | |
1503 | dpaa2_mac_close(mac); |
1504 | kfree(objp: mac); |
1505 | } |
1506 | |
1507 | static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) |
1508 | { |
1509 | struct device *dev = (struct device *)arg; |
1510 | struct ethsw_core *ethsw = dev_get_drvdata(dev); |
1511 | struct ethsw_port_priv *port_priv; |
1512 | int err, if_id; |
1513 | bool had_mac; |
1514 | u32 status; |
1515 | |
1516 | err = dpsw_get_irq_status(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1517 | DPSW_IRQ_INDEX_IF, status: &status); |
1518 | if (err) { |
1519 | dev_err(dev, "Can't get irq status (err %d)\n" , err); |
1520 | goto out; |
1521 | } |
1522 | |
1523 | if_id = (status & 0xFFFF0000) >> 16; |
1524 | port_priv = ethsw->ports[if_id]; |
1525 | |
1526 | if (status & DPSW_IRQ_EVENT_LINK_CHANGED) |
1527 | dpaa2_switch_port_link_state_update(netdev: port_priv->netdev); |
1528 | |
1529 | if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) { |
1530 | dpaa2_switch_port_set_mac_addr(port_priv); |
1531 | /* We can avoid locking because the "endpoint changed" IRQ |
1532 | * handler is the only one who changes priv->mac at runtime, |
1533 | * so we are not racing with anyone. |
1534 | */ |
1535 | had_mac = !!port_priv->mac; |
1536 | if (had_mac) |
1537 | dpaa2_switch_port_disconnect_mac(port_priv); |
1538 | else |
1539 | dpaa2_switch_port_connect_mac(port_priv); |
1540 | } |
1541 | |
1542 | err = dpsw_clear_irq_status(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1543 | DPSW_IRQ_INDEX_IF, status); |
1544 | if (err) |
1545 | dev_err(dev, "Can't clear irq status (err %d)\n" , err); |
1546 | |
1547 | out: |
1548 | return IRQ_HANDLED; |
1549 | } |
1550 | |
1551 | static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev) |
1552 | { |
1553 | u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED; |
1554 | struct device *dev = &sw_dev->dev; |
1555 | struct ethsw_core *ethsw = dev_get_drvdata(dev); |
1556 | struct fsl_mc_device_irq *irq; |
1557 | int err; |
1558 | |
1559 | err = fsl_mc_allocate_irqs(mc_dev: sw_dev); |
1560 | if (err) { |
1561 | dev_err(dev, "MC irqs allocation failed\n" ); |
1562 | return err; |
1563 | } |
1564 | |
1565 | if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { |
1566 | err = -EINVAL; |
1567 | goto free_irq; |
1568 | } |
1569 | |
1570 | err = dpsw_set_irq_enable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1571 | DPSW_IRQ_INDEX_IF, en: 0); |
1572 | if (err) { |
1573 | dev_err(dev, "dpsw_set_irq_enable err %d\n" , err); |
1574 | goto free_irq; |
1575 | } |
1576 | |
1577 | irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; |
1578 | |
1579 | err = devm_request_threaded_irq(dev, irq: irq->virq, NULL, |
1580 | thread_fn: dpaa2_switch_irq0_handler_thread, |
1581 | IRQF_NO_SUSPEND | IRQF_ONESHOT, |
1582 | devname: dev_name(dev), dev_id: dev); |
1583 | if (err) { |
1584 | dev_err(dev, "devm_request_threaded_irq(): %d\n" , err); |
1585 | goto free_irq; |
1586 | } |
1587 | |
1588 | err = dpsw_set_irq_mask(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1589 | DPSW_IRQ_INDEX_IF, mask); |
1590 | if (err) { |
1591 | dev_err(dev, "dpsw_set_irq_mask(): %d\n" , err); |
1592 | goto free_devm_irq; |
1593 | } |
1594 | |
1595 | err = dpsw_set_irq_enable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1596 | DPSW_IRQ_INDEX_IF, en: 1); |
1597 | if (err) { |
1598 | dev_err(dev, "dpsw_set_irq_enable(): %d\n" , err); |
1599 | goto free_devm_irq; |
1600 | } |
1601 | |
1602 | return 0; |
1603 | |
1604 | free_devm_irq: |
1605 | devm_free_irq(dev, irq: irq->virq, dev_id: dev); |
1606 | free_irq: |
1607 | fsl_mc_free_irqs(mc_dev: sw_dev); |
1608 | return err; |
1609 | } |
1610 | |
1611 | static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev) |
1612 | { |
1613 | struct device *dev = &sw_dev->dev; |
1614 | struct ethsw_core *ethsw = dev_get_drvdata(dev); |
1615 | int err; |
1616 | |
1617 | err = dpsw_set_irq_enable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1618 | DPSW_IRQ_INDEX_IF, en: 0); |
1619 | if (err) |
1620 | dev_err(dev, "dpsw_set_irq_enable err %d\n" , err); |
1621 | |
1622 | fsl_mc_free_irqs(mc_dev: sw_dev); |
1623 | } |
1624 | |
1625 | static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable) |
1626 | { |
1627 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1628 | enum dpsw_learning_mode learn_mode; |
1629 | int err; |
1630 | |
1631 | if (enable) |
1632 | learn_mode = DPSW_LEARNING_MODE_HW; |
1633 | else |
1634 | learn_mode = DPSW_LEARNING_MODE_DIS; |
1635 | |
1636 | err = dpsw_if_set_learning_mode(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1637 | if_id: port_priv->idx, mode: learn_mode); |
1638 | if (err) |
1639 | netdev_err(dev: port_priv->netdev, format: "dpsw_if_set_learning_mode err %d\n" , err); |
1640 | |
1641 | if (!enable) |
1642 | dpaa2_switch_port_fast_age(port_priv); |
1643 | |
1644 | return err; |
1645 | } |
1646 | |
1647 | static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev, |
1648 | u8 state) |
1649 | { |
1650 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1651 | int err; |
1652 | |
1653 | err = dpaa2_switch_port_set_stp_state(port_priv, state); |
1654 | if (err) |
1655 | return err; |
1656 | |
1657 | switch (state) { |
1658 | case BR_STATE_DISABLED: |
1659 | case BR_STATE_BLOCKING: |
1660 | case BR_STATE_LISTENING: |
1661 | err = dpaa2_switch_port_set_learning(port_priv, enable: false); |
1662 | break; |
1663 | case BR_STATE_LEARNING: |
1664 | case BR_STATE_FORWARDING: |
1665 | err = dpaa2_switch_port_set_learning(port_priv, |
1666 | enable: port_priv->learn_ena); |
1667 | break; |
1668 | } |
1669 | |
1670 | return err; |
1671 | } |
1672 | |
1673 | static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv, |
1674 | struct switchdev_brport_flags flags) |
1675 | { |
1676 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1677 | |
1678 | if (flags.mask & BR_BCAST_FLOOD) |
1679 | port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD); |
1680 | |
1681 | if (flags.mask & BR_FLOOD) |
1682 | port_priv->ucast_flood = !!(flags.val & BR_FLOOD); |
1683 | |
1684 | return dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: port_priv->fdb->fdb_id); |
1685 | } |
1686 | |
1687 | static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev, |
1688 | struct switchdev_brport_flags flags, |
1689 | struct netlink_ext_ack *extack) |
1690 | { |
1691 | if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD | |
1692 | BR_MCAST_FLOOD)) |
1693 | return -EINVAL; |
1694 | |
1695 | if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) { |
1696 | bool multicast = !!(flags.val & BR_MCAST_FLOOD); |
1697 | bool unicast = !!(flags.val & BR_FLOOD); |
1698 | |
1699 | if (unicast != multicast) { |
1700 | NL_SET_ERR_MSG_MOD(extack, |
1701 | "Cannot configure multicast flooding independently of unicast" ); |
1702 | return -EINVAL; |
1703 | } |
1704 | } |
1705 | |
1706 | return 0; |
1707 | } |
1708 | |
1709 | static int dpaa2_switch_port_bridge_flags(struct net_device *netdev, |
1710 | struct switchdev_brport_flags flags, |
1711 | struct netlink_ext_ack *extack) |
1712 | { |
1713 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1714 | int err; |
1715 | |
1716 | if (flags.mask & BR_LEARNING) { |
1717 | bool learn_ena = !!(flags.val & BR_LEARNING); |
1718 | |
1719 | err = dpaa2_switch_port_set_learning(port_priv, enable: learn_ena); |
1720 | if (err) |
1721 | return err; |
1722 | port_priv->learn_ena = learn_ena; |
1723 | } |
1724 | |
1725 | if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) { |
1726 | err = dpaa2_switch_port_flood(port_priv, flags); |
1727 | if (err) |
1728 | return err; |
1729 | } |
1730 | |
1731 | return 0; |
1732 | } |
1733 | |
1734 | static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx, |
1735 | const struct switchdev_attr *attr, |
1736 | struct netlink_ext_ack *extack) |
1737 | { |
1738 | int err = 0; |
1739 | |
1740 | switch (attr->id) { |
1741 | case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
1742 | err = dpaa2_switch_port_attr_stp_state_set(netdev, |
1743 | state: attr->u.stp_state); |
1744 | break; |
1745 | case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
1746 | if (!attr->u.vlan_filtering) { |
1747 | NL_SET_ERR_MSG_MOD(extack, |
1748 | "The DPAA2 switch does not support VLAN-unaware operation" ); |
1749 | return -EOPNOTSUPP; |
1750 | } |
1751 | break; |
1752 | case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: |
1753 | err = dpaa2_switch_port_pre_bridge_flags(netdev, flags: attr->u.brport_flags, extack); |
1754 | break; |
1755 | case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
1756 | err = dpaa2_switch_port_bridge_flags(netdev, flags: attr->u.brport_flags, extack); |
1757 | break; |
1758 | default: |
1759 | err = -EOPNOTSUPP; |
1760 | break; |
1761 | } |
1762 | |
1763 | return err; |
1764 | } |
1765 | |
1766 | int dpaa2_switch_port_vlans_add(struct net_device *netdev, |
1767 | const struct switchdev_obj_port_vlan *vlan) |
1768 | { |
1769 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1770 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1771 | struct dpsw_attr *attr = ðsw->sw_attr; |
1772 | int err = 0; |
1773 | |
1774 | /* Make sure that the VLAN is not already configured |
1775 | * on the switch port |
1776 | */ |
1777 | if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) { |
1778 | netdev_err(dev: netdev, format: "VLAN %d already configured\n" , vlan->vid); |
1779 | return -EEXIST; |
1780 | } |
1781 | |
1782 | /* Check if there is space for a new VLAN */ |
1783 | err = dpsw_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1784 | attr: ðsw->sw_attr); |
1785 | if (err) { |
1786 | netdev_err(dev: netdev, format: "dpsw_get_attributes err %d\n" , err); |
1787 | return err; |
1788 | } |
1789 | if (attr->max_vlans - attr->num_vlans < 1) |
1790 | return -ENOSPC; |
1791 | |
1792 | /* Check if there is space for a new VLAN */ |
1793 | err = dpsw_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1794 | attr: ðsw->sw_attr); |
1795 | if (err) { |
1796 | netdev_err(dev: netdev, format: "dpsw_get_attributes err %d\n" , err); |
1797 | return err; |
1798 | } |
1799 | if (attr->max_vlans - attr->num_vlans < 1) |
1800 | return -ENOSPC; |
1801 | |
1802 | if (!port_priv->ethsw_data->vlans[vlan->vid]) { |
1803 | /* this is a new VLAN */ |
1804 | err = dpaa2_switch_add_vlan(port_priv, vid: vlan->vid); |
1805 | if (err) |
1806 | return err; |
1807 | |
1808 | port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL; |
1809 | } |
1810 | |
1811 | return dpaa2_switch_port_add_vlan(port_priv, vid: vlan->vid, flags: vlan->flags); |
1812 | } |
1813 | |
1814 | static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc, |
1815 | const unsigned char *addr) |
1816 | { |
1817 | struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; |
1818 | struct netdev_hw_addr *ha; |
1819 | |
1820 | netif_addr_lock_bh(dev: netdev); |
1821 | list_for_each_entry(ha, &list->list, list) { |
1822 | if (ether_addr_equal(addr1: ha->addr, addr2: addr)) { |
1823 | netif_addr_unlock_bh(dev: netdev); |
1824 | return 1; |
1825 | } |
1826 | } |
1827 | netif_addr_unlock_bh(dev: netdev); |
1828 | return 0; |
1829 | } |
1830 | |
1831 | static int dpaa2_switch_port_mdb_add(struct net_device *netdev, |
1832 | const struct switchdev_obj_port_mdb *mdb) |
1833 | { |
1834 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1835 | int err; |
1836 | |
1837 | /* Check if address is already set on this port */ |
1838 | if (dpaa2_switch_port_lookup_address(netdev, is_uc: 0, addr: mdb->addr)) |
1839 | return -EEXIST; |
1840 | |
1841 | err = dpaa2_switch_port_fdb_add_mc(port_priv, addr: mdb->addr); |
1842 | if (err) |
1843 | return err; |
1844 | |
1845 | err = dev_mc_add(dev: netdev, addr: mdb->addr); |
1846 | if (err) { |
1847 | netdev_err(dev: netdev, format: "dev_mc_add err %d\n" , err); |
1848 | dpaa2_switch_port_fdb_del_mc(port_priv, addr: mdb->addr); |
1849 | } |
1850 | |
1851 | return err; |
1852 | } |
1853 | |
1854 | static int dpaa2_switch_port_obj_add(struct net_device *netdev, |
1855 | const struct switchdev_obj *obj) |
1856 | { |
1857 | int err; |
1858 | |
1859 | switch (obj->id) { |
1860 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
1861 | err = dpaa2_switch_port_vlans_add(netdev, |
1862 | SWITCHDEV_OBJ_PORT_VLAN(obj)); |
1863 | break; |
1864 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
1865 | err = dpaa2_switch_port_mdb_add(netdev, |
1866 | SWITCHDEV_OBJ_PORT_MDB(obj)); |
1867 | break; |
1868 | default: |
1869 | err = -EOPNOTSUPP; |
1870 | break; |
1871 | } |
1872 | |
1873 | return err; |
1874 | } |
1875 | |
1876 | static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) |
1877 | { |
1878 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
1879 | struct net_device *netdev = port_priv->netdev; |
1880 | struct dpsw_vlan_if_cfg vcfg; |
1881 | int i, err; |
1882 | |
1883 | if (!port_priv->vlans[vid]) |
1884 | return -ENOENT; |
1885 | |
1886 | if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { |
1887 | /* If we are deleting the PVID of a port, use VLAN 4095 instead |
1888 | * as we are sure that neither the bridge nor the 8021q module |
1889 | * will use it |
1890 | */ |
1891 | err = dpaa2_switch_port_set_pvid(port_priv, pvid: 4095); |
1892 | if (err) |
1893 | return err; |
1894 | } |
1895 | |
1896 | vcfg.num_ifs = 1; |
1897 | vcfg.if_id[0] = port_priv->idx; |
1898 | if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { |
1899 | err = dpsw_vlan_remove_if_untagged(mc_io: ethsw->mc_io, cmd_flags: 0, |
1900 | token: ethsw->dpsw_handle, |
1901 | vlan_id: vid, cfg: &vcfg); |
1902 | if (err) { |
1903 | netdev_err(dev: netdev, |
1904 | format: "dpsw_vlan_remove_if_untagged err %d\n" , |
1905 | err); |
1906 | } |
1907 | port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; |
1908 | } |
1909 | |
1910 | if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { |
1911 | err = dpsw_vlan_remove_if(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
1912 | vlan_id: vid, cfg: &vcfg); |
1913 | if (err) { |
1914 | netdev_err(dev: netdev, |
1915 | format: "dpsw_vlan_remove_if err %d\n" , err); |
1916 | return err; |
1917 | } |
1918 | port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; |
1919 | |
1920 | /* Delete VLAN from switch if it is no longer configured on |
1921 | * any port |
1922 | */ |
1923 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
1924 | if (ethsw->ports[i] && |
1925 | ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) |
1926 | return 0; /* Found a port member in VID */ |
1927 | } |
1928 | |
1929 | ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; |
1930 | |
1931 | err = dpaa2_switch_dellink(ethsw, vid); |
1932 | if (err) |
1933 | return err; |
1934 | } |
1935 | |
1936 | return 0; |
1937 | } |
1938 | |
1939 | int dpaa2_switch_port_vlans_del(struct net_device *netdev, |
1940 | const struct switchdev_obj_port_vlan *vlan) |
1941 | { |
1942 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1943 | |
1944 | if (netif_is_bridge_master(dev: vlan->obj.orig_dev)) |
1945 | return -EOPNOTSUPP; |
1946 | |
1947 | return dpaa2_switch_port_del_vlan(port_priv, vid: vlan->vid); |
1948 | } |
1949 | |
1950 | static int dpaa2_switch_port_mdb_del(struct net_device *netdev, |
1951 | const struct switchdev_obj_port_mdb *mdb) |
1952 | { |
1953 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
1954 | int err; |
1955 | |
1956 | if (!dpaa2_switch_port_lookup_address(netdev, is_uc: 0, addr: mdb->addr)) |
1957 | return -ENOENT; |
1958 | |
1959 | err = dpaa2_switch_port_fdb_del_mc(port_priv, addr: mdb->addr); |
1960 | if (err) |
1961 | return err; |
1962 | |
1963 | err = dev_mc_del(dev: netdev, addr: mdb->addr); |
1964 | if (err) { |
1965 | netdev_err(dev: netdev, format: "dev_mc_del err %d\n" , err); |
1966 | return err; |
1967 | } |
1968 | |
1969 | return err; |
1970 | } |
1971 | |
1972 | static int dpaa2_switch_port_obj_del(struct net_device *netdev, |
1973 | const struct switchdev_obj *obj) |
1974 | { |
1975 | int err; |
1976 | |
1977 | switch (obj->id) { |
1978 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
1979 | err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); |
1980 | break; |
1981 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
1982 | err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); |
1983 | break; |
1984 | default: |
1985 | err = -EOPNOTSUPP; |
1986 | break; |
1987 | } |
1988 | return err; |
1989 | } |
1990 | |
1991 | static int dpaa2_switch_port_attr_set_event(struct net_device *netdev, |
1992 | struct switchdev_notifier_port_attr_info *ptr) |
1993 | { |
1994 | int err; |
1995 | |
1996 | err = switchdev_handle_port_attr_set(dev: netdev, port_attr_info: ptr, |
1997 | check_cb: dpaa2_switch_port_dev_check, |
1998 | set_cb: dpaa2_switch_port_attr_set); |
1999 | return notifier_from_errno(err); |
2000 | } |
2001 | |
2002 | static int dpaa2_switch_port_bridge_join(struct net_device *netdev, |
2003 | struct net_device *upper_dev, |
2004 | struct netlink_ext_ack *extack) |
2005 | { |
2006 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
2007 | struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; |
2008 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
2009 | bool learn_ena; |
2010 | int err; |
2011 | |
2012 | /* Delete the previously manually installed VLAN 1 */ |
2013 | err = dpaa2_switch_port_del_vlan(port_priv, vid: 1); |
2014 | if (err) |
2015 | return err; |
2016 | |
2017 | dpaa2_switch_port_set_fdb(port_priv, bridge_dev: upper_dev); |
2018 | |
2019 | /* Inherit the initial bridge port learning state */ |
2020 | learn_ena = br_port_flag_is_set(dev: netdev, BR_LEARNING); |
2021 | err = dpaa2_switch_port_set_learning(port_priv, enable: learn_ena); |
2022 | port_priv->learn_ena = learn_ena; |
2023 | |
2024 | /* Setup the egress flood policy (broadcast, unknown unicast) */ |
2025 | err = dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: port_priv->fdb->fdb_id); |
2026 | if (err) |
2027 | goto err_egress_flood; |
2028 | |
2029 | /* Recreate the egress flood domain of the FDB that we just left. */ |
2030 | err = dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: old_fdb->fdb_id); |
2031 | if (err) |
2032 | goto err_egress_flood; |
2033 | |
2034 | err = switchdev_bridge_port_offload(brport_dev: netdev, dev: netdev, NULL, |
2035 | NULL, NULL, tx_fwd_offload: false, extack); |
2036 | if (err) |
2037 | goto err_switchdev_offload; |
2038 | |
2039 | return 0; |
2040 | |
2041 | err_switchdev_offload: |
2042 | err_egress_flood: |
2043 | dpaa2_switch_port_set_fdb(port_priv, NULL); |
2044 | return err; |
2045 | } |
2046 | |
2047 | static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg) |
2048 | { |
2049 | __be16 vlan_proto = htons(ETH_P_8021Q); |
2050 | |
2051 | if (vdev) |
2052 | vlan_proto = vlan_dev_vlan_proto(dev: vdev); |
2053 | |
2054 | return dpaa2_switch_port_vlan_kill(netdev: arg, proto: vlan_proto, vid); |
2055 | } |
2056 | |
2057 | static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg) |
2058 | { |
2059 | __be16 vlan_proto = htons(ETH_P_8021Q); |
2060 | |
2061 | if (vdev) |
2062 | vlan_proto = vlan_dev_vlan_proto(dev: vdev); |
2063 | |
2064 | return dpaa2_switch_port_vlan_add(netdev: arg, proto: vlan_proto, vid); |
2065 | } |
2066 | |
2067 | static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev) |
2068 | { |
2069 | switchdev_bridge_port_unoffload(brport_dev: netdev, NULL, NULL, NULL); |
2070 | } |
2071 | |
2072 | static int dpaa2_switch_port_bridge_leave(struct net_device *netdev) |
2073 | { |
2074 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
2075 | struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; |
2076 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
2077 | int err; |
2078 | |
2079 | /* First of all, fast age any learn FDB addresses on this switch port */ |
2080 | dpaa2_switch_port_fast_age(port_priv); |
2081 | |
2082 | /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN |
2083 | * upper devices or otherwise from the FDB table that we are about to |
2084 | * leave |
2085 | */ |
2086 | err = vlan_for_each(dev: netdev, action: dpaa2_switch_port_clear_rxvlan, arg: netdev); |
2087 | if (err) |
2088 | netdev_err(dev: netdev, format: "Unable to clear RX VLANs from old FDB table, err (%d)\n" , err); |
2089 | |
2090 | dpaa2_switch_port_set_fdb(port_priv, NULL); |
2091 | |
2092 | /* Restore all RX VLANs into the new FDB table that we just joined */ |
2093 | err = vlan_for_each(dev: netdev, action: dpaa2_switch_port_restore_rxvlan, arg: netdev); |
2094 | if (err) |
2095 | netdev_err(dev: netdev, format: "Unable to restore RX VLANs to the new FDB, err (%d)\n" , err); |
2096 | |
2097 | /* Reset the flooding state to denote that this port can send any |
2098 | * packet in standalone mode. With this, we are also ensuring that any |
2099 | * later bridge join will have the flooding flag on. |
2100 | */ |
2101 | port_priv->bcast_flood = true; |
2102 | port_priv->ucast_flood = true; |
2103 | |
2104 | /* Setup the egress flood policy (broadcast, unknown unicast). |
2105 | * When the port is not under a bridge, only the CTRL interface is part |
2106 | * of the flooding domain besides the actual port |
2107 | */ |
2108 | err = dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: port_priv->fdb->fdb_id); |
2109 | if (err) |
2110 | return err; |
2111 | |
2112 | /* Recreate the egress flood domain of the FDB that we just left */ |
2113 | err = dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: old_fdb->fdb_id); |
2114 | if (err) |
2115 | return err; |
2116 | |
2117 | /* No HW learning when not under a bridge */ |
2118 | err = dpaa2_switch_port_set_learning(port_priv, enable: false); |
2119 | if (err) |
2120 | return err; |
2121 | port_priv->learn_ena = false; |
2122 | |
2123 | /* Add the VLAN 1 as PVID when not under a bridge. We need this since |
2124 | * the dpaa2 switch interfaces are not capable to be VLAN unaware |
2125 | */ |
2126 | return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID, |
2127 | BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID); |
2128 | } |
2129 | |
2130 | static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev) |
2131 | { |
2132 | struct net_device *upper_dev; |
2133 | struct list_head *iter; |
2134 | |
2135 | /* RCU read lock not necessary because we have write-side protection |
2136 | * (rtnl_mutex), however a non-rcu iterator does not exist. |
2137 | */ |
2138 | netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter) |
2139 | if (is_vlan_dev(dev: upper_dev)) |
2140 | return -EOPNOTSUPP; |
2141 | |
2142 | return 0; |
2143 | } |
2144 | |
2145 | static int |
2146 | dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, |
2147 | struct net_device *upper_dev, |
2148 | struct netlink_ext_ack *extack) |
2149 | { |
2150 | struct ethsw_port_priv *port_priv = netdev_priv(dev: netdev); |
2151 | struct ethsw_port_priv *other_port_priv; |
2152 | struct net_device *other_dev; |
2153 | struct list_head *iter; |
2154 | int err; |
2155 | |
2156 | if (!br_vlan_enabled(dev: upper_dev)) { |
2157 | NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge" ); |
2158 | return -EOPNOTSUPP; |
2159 | } |
2160 | |
2161 | err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); |
2162 | if (err) { |
2163 | NL_SET_ERR_MSG_MOD(extack, |
2164 | "Cannot join a bridge while VLAN uppers are present" ); |
2165 | return 0; |
2166 | } |
2167 | |
2168 | netdev_for_each_lower_dev(upper_dev, other_dev, iter) { |
2169 | if (!dpaa2_switch_port_dev_check(netdev: other_dev)) |
2170 | continue; |
2171 | |
2172 | other_port_priv = netdev_priv(dev: other_dev); |
2173 | if (other_port_priv->ethsw_data != port_priv->ethsw_data) { |
2174 | NL_SET_ERR_MSG_MOD(extack, |
2175 | "Interface from a different DPSW is in the bridge already" ); |
2176 | return -EINVAL; |
2177 | } |
2178 | } |
2179 | |
2180 | return 0; |
2181 | } |
2182 | |
2183 | static int dpaa2_switch_port_prechangeupper(struct net_device *netdev, |
2184 | struct netdev_notifier_changeupper_info *info) |
2185 | { |
2186 | struct netlink_ext_ack *extack; |
2187 | struct net_device *upper_dev; |
2188 | int err; |
2189 | |
2190 | if (!dpaa2_switch_port_dev_check(netdev)) |
2191 | return 0; |
2192 | |
2193 | extack = netdev_notifier_info_to_extack(info: &info->info); |
2194 | upper_dev = info->upper_dev; |
2195 | if (netif_is_bridge_master(dev: upper_dev)) { |
2196 | err = dpaa2_switch_prechangeupper_sanity_checks(netdev, |
2197 | upper_dev, |
2198 | extack); |
2199 | if (err) |
2200 | return err; |
2201 | |
2202 | if (!info->linking) |
2203 | dpaa2_switch_port_pre_bridge_leave(netdev); |
2204 | } |
2205 | |
2206 | return 0; |
2207 | } |
2208 | |
2209 | static int dpaa2_switch_port_changeupper(struct net_device *netdev, |
2210 | struct netdev_notifier_changeupper_info *info) |
2211 | { |
2212 | struct netlink_ext_ack *extack; |
2213 | struct net_device *upper_dev; |
2214 | |
2215 | if (!dpaa2_switch_port_dev_check(netdev)) |
2216 | return 0; |
2217 | |
2218 | extack = netdev_notifier_info_to_extack(info: &info->info); |
2219 | |
2220 | upper_dev = info->upper_dev; |
2221 | if (netif_is_bridge_master(dev: upper_dev)) { |
2222 | if (info->linking) |
2223 | return dpaa2_switch_port_bridge_join(netdev, |
2224 | upper_dev, |
2225 | extack); |
2226 | else |
2227 | return dpaa2_switch_port_bridge_leave(netdev); |
2228 | } |
2229 | |
2230 | return 0; |
2231 | } |
2232 | |
2233 | static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, |
2234 | unsigned long event, void *ptr) |
2235 | { |
2236 | struct net_device *netdev = netdev_notifier_info_to_dev(info: ptr); |
2237 | int err = 0; |
2238 | |
2239 | switch (event) { |
2240 | case NETDEV_PRECHANGEUPPER: |
2241 | err = dpaa2_switch_port_prechangeupper(netdev, info: ptr); |
2242 | if (err) |
2243 | return notifier_from_errno(err); |
2244 | |
2245 | break; |
2246 | case NETDEV_CHANGEUPPER: |
2247 | err = dpaa2_switch_port_changeupper(netdev, info: ptr); |
2248 | if (err) |
2249 | return notifier_from_errno(err); |
2250 | |
2251 | break; |
2252 | } |
2253 | |
2254 | return NOTIFY_DONE; |
2255 | } |
2256 | |
2257 | struct ethsw_switchdev_event_work { |
2258 | struct work_struct work; |
2259 | struct switchdev_notifier_fdb_info fdb_info; |
2260 | struct net_device *dev; |
2261 | unsigned long event; |
2262 | }; |
2263 | |
2264 | static void dpaa2_switch_event_work(struct work_struct *work) |
2265 | { |
2266 | struct ethsw_switchdev_event_work *switchdev_work = |
2267 | container_of(work, struct ethsw_switchdev_event_work, work); |
2268 | struct net_device *dev = switchdev_work->dev; |
2269 | struct switchdev_notifier_fdb_info *fdb_info; |
2270 | int err; |
2271 | |
2272 | rtnl_lock(); |
2273 | fdb_info = &switchdev_work->fdb_info; |
2274 | |
2275 | switch (switchdev_work->event) { |
2276 | case SWITCHDEV_FDB_ADD_TO_DEVICE: |
2277 | if (!fdb_info->added_by_user || fdb_info->is_local) |
2278 | break; |
2279 | if (is_unicast_ether_addr(addr: fdb_info->addr)) |
2280 | err = dpaa2_switch_port_fdb_add_uc(port_priv: netdev_priv(dev), |
2281 | addr: fdb_info->addr); |
2282 | else |
2283 | err = dpaa2_switch_port_fdb_add_mc(port_priv: netdev_priv(dev), |
2284 | addr: fdb_info->addr); |
2285 | if (err) |
2286 | break; |
2287 | fdb_info->offloaded = true; |
2288 | call_switchdev_notifiers(val: SWITCHDEV_FDB_OFFLOADED, dev, |
2289 | info: &fdb_info->info, NULL); |
2290 | break; |
2291 | case SWITCHDEV_FDB_DEL_TO_DEVICE: |
2292 | if (!fdb_info->added_by_user || fdb_info->is_local) |
2293 | break; |
2294 | if (is_unicast_ether_addr(addr: fdb_info->addr)) |
2295 | dpaa2_switch_port_fdb_del_uc(port_priv: netdev_priv(dev), addr: fdb_info->addr); |
2296 | else |
2297 | dpaa2_switch_port_fdb_del_mc(port_priv: netdev_priv(dev), addr: fdb_info->addr); |
2298 | break; |
2299 | } |
2300 | |
2301 | rtnl_unlock(); |
2302 | kfree(objp: switchdev_work->fdb_info.addr); |
2303 | kfree(objp: switchdev_work); |
2304 | dev_put(dev); |
2305 | } |
2306 | |
2307 | /* Called under rcu_read_lock() */ |
2308 | static int dpaa2_switch_port_event(struct notifier_block *nb, |
2309 | unsigned long event, void *ptr) |
2310 | { |
2311 | struct net_device *dev = switchdev_notifier_info_to_dev(info: ptr); |
2312 | struct ethsw_port_priv *port_priv = netdev_priv(dev); |
2313 | struct ethsw_switchdev_event_work *switchdev_work; |
2314 | struct switchdev_notifier_fdb_info *fdb_info = ptr; |
2315 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
2316 | |
2317 | if (event == SWITCHDEV_PORT_ATTR_SET) |
2318 | return dpaa2_switch_port_attr_set_event(netdev: dev, ptr); |
2319 | |
2320 | if (!dpaa2_switch_port_dev_check(netdev: dev)) |
2321 | return NOTIFY_DONE; |
2322 | |
2323 | switchdev_work = kzalloc(size: sizeof(*switchdev_work), GFP_ATOMIC); |
2324 | if (!switchdev_work) |
2325 | return NOTIFY_BAD; |
2326 | |
2327 | INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work); |
2328 | switchdev_work->dev = dev; |
2329 | switchdev_work->event = event; |
2330 | |
2331 | switch (event) { |
2332 | case SWITCHDEV_FDB_ADD_TO_DEVICE: |
2333 | case SWITCHDEV_FDB_DEL_TO_DEVICE: |
2334 | memcpy(&switchdev_work->fdb_info, ptr, |
2335 | sizeof(switchdev_work->fdb_info)); |
2336 | switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); |
2337 | if (!switchdev_work->fdb_info.addr) |
2338 | goto err_addr_alloc; |
2339 | |
2340 | ether_addr_copy(dst: (u8 *)switchdev_work->fdb_info.addr, |
2341 | src: fdb_info->addr); |
2342 | |
2343 | /* Take a reference on the device to avoid being freed. */ |
2344 | dev_hold(dev); |
2345 | break; |
2346 | default: |
2347 | kfree(objp: switchdev_work); |
2348 | return NOTIFY_DONE; |
2349 | } |
2350 | |
2351 | queue_work(wq: ethsw->workqueue, work: &switchdev_work->work); |
2352 | |
2353 | return NOTIFY_DONE; |
2354 | |
2355 | err_addr_alloc: |
2356 | kfree(objp: switchdev_work); |
2357 | return NOTIFY_BAD; |
2358 | } |
2359 | |
2360 | static int dpaa2_switch_port_obj_event(unsigned long event, |
2361 | struct net_device *netdev, |
2362 | struct switchdev_notifier_port_obj_info *port_obj_info) |
2363 | { |
2364 | int err = -EOPNOTSUPP; |
2365 | |
2366 | if (!dpaa2_switch_port_dev_check(netdev)) |
2367 | return NOTIFY_DONE; |
2368 | |
2369 | switch (event) { |
2370 | case SWITCHDEV_PORT_OBJ_ADD: |
2371 | err = dpaa2_switch_port_obj_add(netdev, obj: port_obj_info->obj); |
2372 | break; |
2373 | case SWITCHDEV_PORT_OBJ_DEL: |
2374 | err = dpaa2_switch_port_obj_del(netdev, obj: port_obj_info->obj); |
2375 | break; |
2376 | } |
2377 | |
2378 | port_obj_info->handled = true; |
2379 | return notifier_from_errno(err); |
2380 | } |
2381 | |
2382 | static int dpaa2_switch_port_blocking_event(struct notifier_block *nb, |
2383 | unsigned long event, void *ptr) |
2384 | { |
2385 | struct net_device *dev = switchdev_notifier_info_to_dev(info: ptr); |
2386 | |
2387 | switch (event) { |
2388 | case SWITCHDEV_PORT_OBJ_ADD: |
2389 | case SWITCHDEV_PORT_OBJ_DEL: |
2390 | return dpaa2_switch_port_obj_event(event, netdev: dev, port_obj_info: ptr); |
2391 | case SWITCHDEV_PORT_ATTR_SET: |
2392 | return dpaa2_switch_port_attr_set_event(netdev: dev, ptr); |
2393 | } |
2394 | |
2395 | return NOTIFY_DONE; |
2396 | } |
2397 | |
2398 | /* Build a linear skb based on a single-buffer frame descriptor */ |
2399 | static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw, |
2400 | const struct dpaa2_fd *fd) |
2401 | { |
2402 | u16 fd_offset = dpaa2_fd_get_offset(fd); |
2403 | dma_addr_t addr = dpaa2_fd_get_addr(fd); |
2404 | u32 fd_length = dpaa2_fd_get_len(fd); |
2405 | struct device *dev = ethsw->dev; |
2406 | struct sk_buff *skb = NULL; |
2407 | void *fd_vaddr; |
2408 | |
2409 | fd_vaddr = dpaa2_iova_to_virt(domain: ethsw->iommu_domain, iova_addr: addr); |
2410 | dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE, |
2411 | DMA_FROM_DEVICE); |
2412 | |
2413 | skb = build_skb(data: fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE + |
2414 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); |
2415 | if (unlikely(!skb)) { |
2416 | dev_err(dev, "build_skb() failed\n" ); |
2417 | return NULL; |
2418 | } |
2419 | |
2420 | skb_reserve(skb, len: fd_offset); |
2421 | skb_put(skb, len: fd_length); |
2422 | |
2423 | ethsw->buf_count--; |
2424 | |
2425 | return skb; |
2426 | } |
2427 | |
2428 | static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq, |
2429 | const struct dpaa2_fd *fd) |
2430 | { |
2431 | dpaa2_switch_free_fd(ethsw: fq->ethsw, fd); |
2432 | } |
2433 | |
2434 | static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq, |
2435 | const struct dpaa2_fd *fd) |
2436 | { |
2437 | struct ethsw_core *ethsw = fq->ethsw; |
2438 | struct ethsw_port_priv *port_priv; |
2439 | struct net_device *netdev; |
2440 | struct vlan_ethhdr *hdr; |
2441 | struct sk_buff *skb; |
2442 | u16 vlan_tci, vid; |
2443 | int if_id, err; |
2444 | |
2445 | /* get switch ingress interface ID */ |
2446 | if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF; |
2447 | |
2448 | if (if_id >= ethsw->sw_attr.num_ifs) { |
2449 | dev_err(ethsw->dev, "Frame received from unknown interface!\n" ); |
2450 | goto err_free_fd; |
2451 | } |
2452 | port_priv = ethsw->ports[if_id]; |
2453 | netdev = port_priv->netdev; |
2454 | |
2455 | /* build the SKB based on the FD received */ |
2456 | if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) { |
2457 | if (net_ratelimit()) { |
2458 | netdev_err(dev: netdev, format: "Received invalid frame format\n" ); |
2459 | goto err_free_fd; |
2460 | } |
2461 | } |
2462 | |
2463 | skb = dpaa2_switch_build_linear_skb(ethsw, fd); |
2464 | if (unlikely(!skb)) |
2465 | goto err_free_fd; |
2466 | |
2467 | skb_reset_mac_header(skb); |
2468 | |
2469 | /* Remove the VLAN header if the packet that we just received has a vid |
2470 | * equal to the port PVIDs. Since the dpaa2-switch can operate only in |
2471 | * VLAN-aware mode and no alterations are made on the packet when it's |
2472 | * redirected/mirrored to the control interface, we are sure that there |
2473 | * will always be a VLAN header present. |
2474 | */ |
2475 | hdr = vlan_eth_hdr(skb); |
2476 | vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK; |
2477 | if (vid == port_priv->pvid) { |
2478 | err = __skb_vlan_pop(skb, vlan_tci: &vlan_tci); |
2479 | if (err) { |
2480 | dev_info(ethsw->dev, "__skb_vlan_pop() returned %d" , err); |
2481 | goto err_free_fd; |
2482 | } |
2483 | } |
2484 | |
2485 | skb->dev = netdev; |
2486 | skb->protocol = eth_type_trans(skb, dev: skb->dev); |
2487 | |
2488 | /* Setup the offload_fwd_mark only if the port is under a bridge */ |
2489 | skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev); |
2490 | |
2491 | netif_receive_skb(skb); |
2492 | |
2493 | return; |
2494 | |
2495 | err_free_fd: |
2496 | dpaa2_switch_free_fd(ethsw, fd); |
2497 | } |
2498 | |
2499 | static void dpaa2_switch_detect_features(struct ethsw_core *ethsw) |
2500 | { |
2501 | ethsw->features = 0; |
2502 | |
2503 | if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6)) |
2504 | ethsw->features |= ETHSW_FEATURE_MAC_ADDR; |
2505 | } |
2506 | |
2507 | static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw) |
2508 | { |
2509 | struct dpsw_ctrl_if_attr ctrl_if_attr; |
2510 | struct device *dev = ethsw->dev; |
2511 | int i = 0; |
2512 | int err; |
2513 | |
2514 | err = dpsw_ctrl_if_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
2515 | attr: &ctrl_if_attr); |
2516 | if (err) { |
2517 | dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n" , err); |
2518 | return err; |
2519 | } |
2520 | |
2521 | ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid; |
2522 | ethsw->fq[i].ethsw = ethsw; |
2523 | ethsw->fq[i++].type = DPSW_QUEUE_RX; |
2524 | |
2525 | ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid; |
2526 | ethsw->fq[i].ethsw = ethsw; |
2527 | ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF; |
2528 | |
2529 | return 0; |
2530 | } |
2531 | |
2532 | /* Free buffers acquired from the buffer pool or which were meant to |
2533 | * be released in the pool |
2534 | */ |
2535 | static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count) |
2536 | { |
2537 | struct device *dev = ethsw->dev; |
2538 | void *vaddr; |
2539 | int i; |
2540 | |
2541 | for (i = 0; i < count; i++) { |
2542 | vaddr = dpaa2_iova_to_virt(domain: ethsw->iommu_domain, iova_addr: buf_array[i]); |
2543 | dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE, |
2544 | DMA_FROM_DEVICE); |
2545 | free_pages(addr: (unsigned long)vaddr, order: 0); |
2546 | } |
2547 | } |
2548 | |
2549 | /* Perform a single release command to add buffers |
2550 | * to the specified buffer pool |
2551 | */ |
2552 | static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid) |
2553 | { |
2554 | struct device *dev = ethsw->dev; |
2555 | u64 buf_array[BUFS_PER_CMD]; |
2556 | struct page *page; |
2557 | int retries = 0; |
2558 | dma_addr_t addr; |
2559 | int err; |
2560 | int i; |
2561 | |
2562 | for (i = 0; i < BUFS_PER_CMD; i++) { |
2563 | /* Allocate one page for each Rx buffer. WRIOP sees |
2564 | * the entire page except for a tailroom reserved for |
2565 | * skb shared info |
2566 | */ |
2567 | page = dev_alloc_pages(order: 0); |
2568 | if (!page) { |
2569 | dev_err(dev, "buffer allocation failed\n" ); |
2570 | goto err_alloc; |
2571 | } |
2572 | |
2573 | addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE, |
2574 | DMA_FROM_DEVICE); |
2575 | if (dma_mapping_error(dev, dma_addr: addr)) { |
2576 | dev_err(dev, "dma_map_single() failed\n" ); |
2577 | goto err_map; |
2578 | } |
2579 | buf_array[i] = addr; |
2580 | } |
2581 | |
2582 | release_bufs: |
2583 | /* In case the portal is busy, retry until successful or |
2584 | * max retries hit. |
2585 | */ |
2586 | while ((err = dpaa2_io_service_release(NULL, bpid, |
2587 | buffers: buf_array, num_buffers: i)) == -EBUSY) { |
2588 | if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) |
2589 | break; |
2590 | |
2591 | cpu_relax(); |
2592 | } |
2593 | |
2594 | /* If release command failed, clean up and bail out. */ |
2595 | if (err) { |
2596 | dpaa2_switch_free_bufs(ethsw, buf_array, count: i); |
2597 | return 0; |
2598 | } |
2599 | |
2600 | return i; |
2601 | |
2602 | err_map: |
2603 | __free_pages(page, order: 0); |
2604 | err_alloc: |
2605 | /* If we managed to allocate at least some buffers, |
2606 | * release them to hardware |
2607 | */ |
2608 | if (i) |
2609 | goto release_bufs; |
2610 | |
2611 | return 0; |
2612 | } |
2613 | |
2614 | static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw) |
2615 | { |
2616 | int *count = ðsw->buf_count; |
2617 | int new_count; |
2618 | int err = 0; |
2619 | |
2620 | if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) { |
2621 | do { |
2622 | new_count = dpaa2_switch_add_bufs(ethsw, bpid: ethsw->bpid); |
2623 | if (unlikely(!new_count)) { |
2624 | /* Out of memory; abort for now, we'll |
2625 | * try later on |
2626 | */ |
2627 | break; |
2628 | } |
2629 | *count += new_count; |
2630 | } while (*count < DPAA2_ETHSW_NUM_BUFS); |
2631 | |
2632 | if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS)) |
2633 | err = -ENOMEM; |
2634 | } |
2635 | |
2636 | return err; |
2637 | } |
2638 | |
2639 | static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw) |
2640 | { |
2641 | int *count, i; |
2642 | |
2643 | for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) { |
2644 | count = ðsw->buf_count; |
2645 | *count += dpaa2_switch_add_bufs(ethsw, bpid: ethsw->bpid); |
2646 | |
2647 | if (unlikely(*count < BUFS_PER_CMD)) |
2648 | return -ENOMEM; |
2649 | } |
2650 | |
2651 | return 0; |
2652 | } |
2653 | |
2654 | static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw) |
2655 | { |
2656 | u64 buf_array[BUFS_PER_CMD]; |
2657 | int ret; |
2658 | |
2659 | do { |
2660 | ret = dpaa2_io_service_acquire(NULL, bpid: ethsw->bpid, |
2661 | buffers: buf_array, BUFS_PER_CMD); |
2662 | if (ret < 0) { |
2663 | dev_err(ethsw->dev, |
2664 | "dpaa2_io_service_acquire() = %d\n" , ret); |
2665 | return; |
2666 | } |
2667 | dpaa2_switch_free_bufs(ethsw, buf_array, count: ret); |
2668 | |
2669 | } while (ret); |
2670 | } |
2671 | |
2672 | static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw) |
2673 | { |
2674 | struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 }; |
2675 | struct device *dev = ethsw->dev; |
2676 | struct fsl_mc_device *dpbp_dev; |
2677 | struct dpbp_attr dpbp_attrs; |
2678 | int err; |
2679 | |
2680 | err = fsl_mc_object_allocate(to_fsl_mc_device(dev), pool_type: FSL_MC_POOL_DPBP, |
2681 | new_mc_adev: &dpbp_dev); |
2682 | if (err) { |
2683 | if (err == -ENXIO) |
2684 | err = -EPROBE_DEFER; |
2685 | else |
2686 | dev_err(dev, "DPBP device allocation failed\n" ); |
2687 | return err; |
2688 | } |
2689 | ethsw->dpbp_dev = dpbp_dev; |
2690 | |
2691 | err = dpbp_open(mc_io: ethsw->mc_io, cmd_flags: 0, dpbp_id: dpbp_dev->obj_desc.id, |
2692 | token: &dpbp_dev->mc_handle); |
2693 | if (err) { |
2694 | dev_err(dev, "dpbp_open() failed\n" ); |
2695 | goto err_open; |
2696 | } |
2697 | |
2698 | err = dpbp_reset(mc_io: ethsw->mc_io, cmd_flags: 0, token: dpbp_dev->mc_handle); |
2699 | if (err) { |
2700 | dev_err(dev, "dpbp_reset() failed\n" ); |
2701 | goto err_reset; |
2702 | } |
2703 | |
2704 | err = dpbp_enable(mc_io: ethsw->mc_io, cmd_flags: 0, token: dpbp_dev->mc_handle); |
2705 | if (err) { |
2706 | dev_err(dev, "dpbp_enable() failed\n" ); |
2707 | goto err_enable; |
2708 | } |
2709 | |
2710 | err = dpbp_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: dpbp_dev->mc_handle, |
2711 | attr: &dpbp_attrs); |
2712 | if (err) { |
2713 | dev_err(dev, "dpbp_get_attributes() failed\n" ); |
2714 | goto err_get_attr; |
2715 | } |
2716 | |
2717 | dpsw_ctrl_if_pools_cfg.num_dpbp = 1; |
2718 | dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id; |
2719 | dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE; |
2720 | dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0; |
2721 | |
2722 | err = dpsw_ctrl_if_set_pools(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
2723 | cfg: &dpsw_ctrl_if_pools_cfg); |
2724 | if (err) { |
2725 | dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n" ); |
2726 | goto err_get_attr; |
2727 | } |
2728 | ethsw->bpid = dpbp_attrs.id; |
2729 | |
2730 | return 0; |
2731 | |
2732 | err_get_attr: |
2733 | dpbp_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: dpbp_dev->mc_handle); |
2734 | err_enable: |
2735 | err_reset: |
2736 | dpbp_close(mc_io: ethsw->mc_io, cmd_flags: 0, token: dpbp_dev->mc_handle); |
2737 | err_open: |
2738 | fsl_mc_object_free(mc_adev: dpbp_dev); |
2739 | return err; |
2740 | } |
2741 | |
2742 | static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw) |
2743 | { |
2744 | dpbp_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpbp_dev->mc_handle); |
2745 | dpbp_close(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpbp_dev->mc_handle); |
2746 | fsl_mc_object_free(mc_adev: ethsw->dpbp_dev); |
2747 | } |
2748 | |
2749 | static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw) |
2750 | { |
2751 | int i; |
2752 | |
2753 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { |
2754 | ethsw->fq[i].store = |
2755 | dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE, |
2756 | dev: ethsw->dev); |
2757 | if (!ethsw->fq[i].store) { |
2758 | dev_err(ethsw->dev, "dpaa2_io_store_create failed\n" ); |
2759 | while (--i >= 0) |
2760 | dpaa2_io_store_destroy(s: ethsw->fq[i].store); |
2761 | return -ENOMEM; |
2762 | } |
2763 | } |
2764 | |
2765 | return 0; |
2766 | } |
2767 | |
2768 | static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw) |
2769 | { |
2770 | int i; |
2771 | |
2772 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) |
2773 | dpaa2_io_store_destroy(s: ethsw->fq[i].store); |
2774 | } |
2775 | |
2776 | static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq) |
2777 | { |
2778 | int err, retries = 0; |
2779 | |
2780 | /* Try to pull from the FQ while the portal is busy and we didn't hit |
2781 | * the maximum number fo retries |
2782 | */ |
2783 | do { |
2784 | err = dpaa2_io_service_pull_fq(NULL, fqid: fq->fqid, s: fq->store); |
2785 | cpu_relax(); |
2786 | } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); |
2787 | |
2788 | if (unlikely(err)) |
2789 | dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d" , err); |
2790 | |
2791 | return err; |
2792 | } |
2793 | |
2794 | /* Consume all frames pull-dequeued into the store */ |
2795 | static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq) |
2796 | { |
2797 | struct ethsw_core *ethsw = fq->ethsw; |
2798 | int cleaned = 0, is_last; |
2799 | struct dpaa2_dq *dq; |
2800 | int retries = 0; |
2801 | |
2802 | do { |
2803 | /* Get the next available FD from the store */ |
2804 | dq = dpaa2_io_store_next(s: fq->store, is_last: &is_last); |
2805 | if (unlikely(!dq)) { |
2806 | if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) { |
2807 | dev_err_once(ethsw->dev, |
2808 | "No valid dequeue response\n" ); |
2809 | return -ETIMEDOUT; |
2810 | } |
2811 | continue; |
2812 | } |
2813 | |
2814 | if (fq->type == DPSW_QUEUE_RX) |
2815 | dpaa2_switch_rx(fq, fd: dpaa2_dq_fd(dq)); |
2816 | else |
2817 | dpaa2_switch_tx_conf(fq, fd: dpaa2_dq_fd(dq)); |
2818 | cleaned++; |
2819 | |
2820 | } while (!is_last); |
2821 | |
2822 | return cleaned; |
2823 | } |
2824 | |
2825 | /* NAPI poll routine */ |
2826 | static int dpaa2_switch_poll(struct napi_struct *napi, int budget) |
2827 | { |
2828 | int err, cleaned = 0, store_cleaned, work_done; |
2829 | struct dpaa2_switch_fq *fq; |
2830 | int retries = 0; |
2831 | |
2832 | fq = container_of(napi, struct dpaa2_switch_fq, napi); |
2833 | |
2834 | do { |
2835 | err = dpaa2_switch_pull_fq(fq); |
2836 | if (unlikely(err)) |
2837 | break; |
2838 | |
2839 | /* Refill pool if appropriate */ |
2840 | dpaa2_switch_refill_bp(ethsw: fq->ethsw); |
2841 | |
2842 | store_cleaned = dpaa2_switch_store_consume(fq); |
2843 | cleaned += store_cleaned; |
2844 | |
2845 | if (cleaned >= budget) { |
2846 | work_done = budget; |
2847 | goto out; |
2848 | } |
2849 | |
2850 | } while (store_cleaned); |
2851 | |
2852 | /* We didn't consume the entire budget, so finish napi and re-enable |
2853 | * data availability notifications |
2854 | */ |
2855 | napi_complete_done(n: napi, work_done: cleaned); |
2856 | do { |
2857 | err = dpaa2_io_service_rearm(NULL, ctx: &fq->nctx); |
2858 | cpu_relax(); |
2859 | } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); |
2860 | |
2861 | work_done = max(cleaned, 1); |
2862 | out: |
2863 | |
2864 | return work_done; |
2865 | } |
2866 | |
2867 | static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx) |
2868 | { |
2869 | struct dpaa2_switch_fq *fq; |
2870 | |
2871 | fq = container_of(nctx, struct dpaa2_switch_fq, nctx); |
2872 | |
2873 | napi_schedule(n: &fq->napi); |
2874 | } |
2875 | |
2876 | static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw) |
2877 | { |
2878 | struct dpsw_ctrl_if_queue_cfg queue_cfg; |
2879 | struct dpaa2_io_notification_ctx *nctx; |
2880 | int err, i, j; |
2881 | |
2882 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { |
2883 | nctx = ðsw->fq[i].nctx; |
2884 | |
2885 | /* Register a new software context for the FQID. |
2886 | * By using NULL as the first parameter, we specify that we do |
2887 | * not care on which cpu are interrupts received for this queue |
2888 | */ |
2889 | nctx->is_cdan = 0; |
2890 | nctx->id = ethsw->fq[i].fqid; |
2891 | nctx->desired_cpu = DPAA2_IO_ANY_CPU; |
2892 | nctx->cb = dpaa2_switch_fqdan_cb; |
2893 | err = dpaa2_io_service_register(NULL, ctx: nctx, dev: ethsw->dev); |
2894 | if (err) { |
2895 | err = -EPROBE_DEFER; |
2896 | goto err_register; |
2897 | } |
2898 | |
2899 | queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST | |
2900 | DPSW_CTRL_IF_QUEUE_OPT_USER_CTX; |
2901 | queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO; |
2902 | queue_cfg.dest_cfg.dest_id = nctx->dpio_id; |
2903 | queue_cfg.dest_cfg.priority = 0; |
2904 | queue_cfg.user_ctx = nctx->qman64; |
2905 | |
2906 | err = dpsw_ctrl_if_set_queue(mc_io: ethsw->mc_io, cmd_flags: 0, |
2907 | token: ethsw->dpsw_handle, |
2908 | qtype: ethsw->fq[i].type, |
2909 | cfg: &queue_cfg); |
2910 | if (err) |
2911 | goto err_set_queue; |
2912 | } |
2913 | |
2914 | return 0; |
2915 | |
2916 | err_set_queue: |
2917 | dpaa2_io_service_deregister(NULL, ctx: nctx, dev: ethsw->dev); |
2918 | err_register: |
2919 | for (j = 0; j < i; j++) |
2920 | dpaa2_io_service_deregister(NULL, ctx: ðsw->fq[j].nctx, |
2921 | dev: ethsw->dev); |
2922 | |
2923 | return err; |
2924 | } |
2925 | |
2926 | static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw) |
2927 | { |
2928 | int i; |
2929 | |
2930 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) |
2931 | dpaa2_io_service_deregister(NULL, ctx: ðsw->fq[i].nctx, |
2932 | dev: ethsw->dev); |
2933 | } |
2934 | |
2935 | static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw) |
2936 | { |
2937 | int err; |
2938 | |
2939 | /* setup FQs for Rx and Tx Conf */ |
2940 | err = dpaa2_switch_setup_fqs(ethsw); |
2941 | if (err) |
2942 | return err; |
2943 | |
2944 | /* setup the buffer pool needed on the Rx path */ |
2945 | err = dpaa2_switch_setup_dpbp(ethsw); |
2946 | if (err) |
2947 | return err; |
2948 | |
2949 | err = dpaa2_switch_alloc_rings(ethsw); |
2950 | if (err) |
2951 | goto err_free_dpbp; |
2952 | |
2953 | err = dpaa2_switch_setup_dpio(ethsw); |
2954 | if (err) |
2955 | goto err_destroy_rings; |
2956 | |
2957 | err = dpaa2_switch_seed_bp(ethsw); |
2958 | if (err) |
2959 | goto err_deregister_dpio; |
2960 | |
2961 | err = dpsw_ctrl_if_enable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
2962 | if (err) { |
2963 | dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n" , err); |
2964 | goto err_drain_dpbp; |
2965 | } |
2966 | |
2967 | return 0; |
2968 | |
2969 | err_drain_dpbp: |
2970 | dpaa2_switch_drain_bp(ethsw); |
2971 | err_deregister_dpio: |
2972 | dpaa2_switch_free_dpio(ethsw); |
2973 | err_destroy_rings: |
2974 | dpaa2_switch_destroy_rings(ethsw); |
2975 | err_free_dpbp: |
2976 | dpaa2_switch_free_dpbp(ethsw); |
2977 | |
2978 | return err; |
2979 | } |
2980 | |
2981 | static void dpaa2_switch_remove_port(struct ethsw_core *ethsw, |
2982 | u16 port_idx) |
2983 | { |
2984 | struct ethsw_port_priv *port_priv = ethsw->ports[port_idx]; |
2985 | |
2986 | dpaa2_switch_port_disconnect_mac(port_priv); |
2987 | free_netdev(dev: port_priv->netdev); |
2988 | ethsw->ports[port_idx] = NULL; |
2989 | } |
2990 | |
2991 | static int dpaa2_switch_init(struct fsl_mc_device *sw_dev) |
2992 | { |
2993 | struct device *dev = &sw_dev->dev; |
2994 | struct ethsw_core *ethsw = dev_get_drvdata(dev); |
2995 | struct dpsw_vlan_if_cfg vcfg = {0}; |
2996 | struct dpsw_tci_cfg tci_cfg = {0}; |
2997 | struct dpsw_stp_cfg stp_cfg; |
2998 | int err; |
2999 | u16 i; |
3000 | |
3001 | ethsw->dev_id = sw_dev->obj_desc.id; |
3002 | |
3003 | err = dpsw_open(mc_io: ethsw->mc_io, cmd_flags: 0, dpsw_id: ethsw->dev_id, token: ðsw->dpsw_handle); |
3004 | if (err) { |
3005 | dev_err(dev, "dpsw_open err %d\n" , err); |
3006 | return err; |
3007 | } |
3008 | |
3009 | err = dpsw_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3010 | attr: ðsw->sw_attr); |
3011 | if (err) { |
3012 | dev_err(dev, "dpsw_get_attributes err %d\n" , err); |
3013 | goto err_close; |
3014 | } |
3015 | |
3016 | err = dpsw_get_api_version(mc_io: ethsw->mc_io, cmd_flags: 0, |
3017 | major_ver: ðsw->major, |
3018 | minor_ver: ðsw->minor); |
3019 | if (err) { |
3020 | dev_err(dev, "dpsw_get_api_version err %d\n" , err); |
3021 | goto err_close; |
3022 | } |
3023 | |
3024 | /* Minimum supported DPSW version check */ |
3025 | if (ethsw->major < DPSW_MIN_VER_MAJOR || |
3026 | (ethsw->major == DPSW_MIN_VER_MAJOR && |
3027 | ethsw->minor < DPSW_MIN_VER_MINOR)) { |
3028 | dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n" , |
3029 | ethsw->major, ethsw->minor); |
3030 | err = -EOPNOTSUPP; |
3031 | goto err_close; |
3032 | } |
3033 | |
3034 | if (!dpaa2_switch_supports_cpu_traffic(ethsw)) { |
3035 | err = -EOPNOTSUPP; |
3036 | goto err_close; |
3037 | } |
3038 | |
3039 | dpaa2_switch_detect_features(ethsw); |
3040 | |
3041 | err = dpsw_reset(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3042 | if (err) { |
3043 | dev_err(dev, "dpsw_reset err %d\n" , err); |
3044 | goto err_close; |
3045 | } |
3046 | |
3047 | stp_cfg.vlan_id = DEFAULT_VLAN_ID; |
3048 | stp_cfg.state = DPSW_STP_STATE_FORWARDING; |
3049 | |
3050 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
3051 | err = dpsw_if_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, if_id: i); |
3052 | if (err) { |
3053 | dev_err(dev, "dpsw_if_disable err %d\n" , err); |
3054 | goto err_close; |
3055 | } |
3056 | |
3057 | err = dpsw_if_set_stp(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, if_id: i, |
3058 | cfg: &stp_cfg); |
3059 | if (err) { |
3060 | dev_err(dev, "dpsw_if_set_stp err %d for port %d\n" , |
3061 | err, i); |
3062 | goto err_close; |
3063 | } |
3064 | |
3065 | /* Switch starts with all ports configured to VLAN 1. Need to |
3066 | * remove this setting to allow configuration at bridge join |
3067 | */ |
3068 | vcfg.num_ifs = 1; |
3069 | vcfg.if_id[0] = i; |
3070 | err = dpsw_vlan_remove_if_untagged(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3071 | DEFAULT_VLAN_ID, cfg: &vcfg); |
3072 | if (err) { |
3073 | dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n" , |
3074 | err); |
3075 | goto err_close; |
3076 | } |
3077 | |
3078 | tci_cfg.vlan_id = 4095; |
3079 | err = dpsw_if_set_tci(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, if_id: i, cfg: &tci_cfg); |
3080 | if (err) { |
3081 | dev_err(dev, "dpsw_if_set_tci err %d\n" , err); |
3082 | goto err_close; |
3083 | } |
3084 | |
3085 | err = dpsw_vlan_remove_if(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3086 | DEFAULT_VLAN_ID, cfg: &vcfg); |
3087 | if (err) { |
3088 | dev_err(dev, "dpsw_vlan_remove_if err %d\n" , err); |
3089 | goto err_close; |
3090 | } |
3091 | } |
3092 | |
3093 | err = dpsw_vlan_remove(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, DEFAULT_VLAN_ID); |
3094 | if (err) { |
3095 | dev_err(dev, "dpsw_vlan_remove err %d\n" , err); |
3096 | goto err_close; |
3097 | } |
3098 | |
3099 | ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered" , |
3100 | WQ_MEM_RECLAIM, "ethsw" , |
3101 | ethsw->sw_attr.id); |
3102 | if (!ethsw->workqueue) { |
3103 | err = -ENOMEM; |
3104 | goto err_close; |
3105 | } |
3106 | |
3107 | err = dpsw_fdb_remove(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, fdb_id: 0); |
3108 | if (err) |
3109 | goto err_destroy_ordered_workqueue; |
3110 | |
3111 | err = dpaa2_switch_ctrl_if_setup(ethsw); |
3112 | if (err) |
3113 | goto err_destroy_ordered_workqueue; |
3114 | |
3115 | return 0; |
3116 | |
3117 | err_destroy_ordered_workqueue: |
3118 | destroy_workqueue(wq: ethsw->workqueue); |
3119 | |
3120 | err_close: |
3121 | dpsw_close(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3122 | return err; |
3123 | } |
3124 | |
3125 | /* Add an ACL to redirect frames with specific destination MAC address to |
3126 | * control interface |
3127 | */ |
3128 | static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv, |
3129 | const char *mac) |
3130 | { |
3131 | struct dpaa2_switch_acl_entry acl_entry = {0}; |
3132 | |
3133 | /* Match on the destination MAC address */ |
3134 | ether_addr_copy(dst: acl_entry.key.match.l2_dest_mac, src: mac); |
3135 | eth_broadcast_addr(addr: acl_entry.key.mask.l2_dest_mac); |
3136 | |
3137 | /* Trap to CPU */ |
3138 | acl_entry.cfg.precedence = 0; |
3139 | acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; |
3140 | |
3141 | return dpaa2_switch_acl_entry_add(block: port_priv->filter_block, entry: &acl_entry); |
3142 | } |
3143 | |
3144 | static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port) |
3145 | { |
3146 | const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; |
3147 | struct switchdev_obj_port_vlan vlan = { |
3148 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
3149 | .vid = DEFAULT_VLAN_ID, |
3150 | .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID, |
3151 | }; |
3152 | struct net_device *netdev = port_priv->netdev; |
3153 | struct ethsw_core *ethsw = port_priv->ethsw_data; |
3154 | struct dpaa2_switch_filter_block *filter_block; |
3155 | struct dpsw_fdb_cfg fdb_cfg = {0}; |
3156 | struct dpsw_if_attr dpsw_if_attr; |
3157 | struct dpaa2_switch_fdb *fdb; |
3158 | struct dpsw_acl_cfg acl_cfg; |
3159 | u16 fdb_id, acl_tbl_id; |
3160 | int err; |
3161 | |
3162 | /* Get the Tx queue for this specific port */ |
3163 | err = dpsw_if_get_attributes(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3164 | if_id: port_priv->idx, attr: &dpsw_if_attr); |
3165 | if (err) { |
3166 | netdev_err(dev: netdev, format: "dpsw_if_get_attributes err %d\n" , err); |
3167 | return err; |
3168 | } |
3169 | port_priv->tx_qdid = dpsw_if_attr.qdid; |
3170 | |
3171 | /* Create a FDB table for this particular switch port */ |
3172 | fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs; |
3173 | err = dpsw_fdb_add(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3174 | fdb_id: &fdb_id, cfg: &fdb_cfg); |
3175 | if (err) { |
3176 | netdev_err(dev: netdev, format: "dpsw_fdb_add err %d\n" , err); |
3177 | return err; |
3178 | } |
3179 | |
3180 | /* Find an unused dpaa2_switch_fdb structure and use it */ |
3181 | fdb = dpaa2_switch_fdb_get_unused(ethsw); |
3182 | fdb->fdb_id = fdb_id; |
3183 | fdb->in_use = true; |
3184 | fdb->bridge_dev = NULL; |
3185 | port_priv->fdb = fdb; |
3186 | |
3187 | /* We need to add VLAN 1 as the PVID on this port until it is under a |
3188 | * bridge since the DPAA2 switch is not able to handle the traffic in a |
3189 | * VLAN unaware fashion |
3190 | */ |
3191 | err = dpaa2_switch_port_vlans_add(netdev, vlan: &vlan); |
3192 | if (err) |
3193 | return err; |
3194 | |
3195 | /* Setup the egress flooding domains (broadcast, unknown unicast */ |
3196 | err = dpaa2_switch_fdb_set_egress_flood(ethsw, fdb_id: port_priv->fdb->fdb_id); |
3197 | if (err) |
3198 | return err; |
3199 | |
3200 | /* Create an ACL table to be used by this switch port */ |
3201 | acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES; |
3202 | err = dpsw_acl_add(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle, |
3203 | acl_id: &acl_tbl_id, cfg: &acl_cfg); |
3204 | if (err) { |
3205 | netdev_err(dev: netdev, format: "dpsw_acl_add err %d\n" , err); |
3206 | return err; |
3207 | } |
3208 | |
3209 | filter_block = dpaa2_switch_filter_block_get_unused(ethsw); |
3210 | filter_block->ethsw = ethsw; |
3211 | filter_block->acl_id = acl_tbl_id; |
3212 | filter_block->in_use = true; |
3213 | filter_block->num_acl_rules = 0; |
3214 | INIT_LIST_HEAD(list: &filter_block->acl_entries); |
3215 | INIT_LIST_HEAD(list: &filter_block->mirror_entries); |
3216 | |
3217 | err = dpaa2_switch_port_acl_tbl_bind(port_priv, block: filter_block); |
3218 | if (err) |
3219 | return err; |
3220 | |
3221 | err = dpaa2_switch_port_trap_mac_addr(port_priv, mac: stpa); |
3222 | if (err) |
3223 | return err; |
3224 | |
3225 | return err; |
3226 | } |
3227 | |
3228 | static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw) |
3229 | { |
3230 | dpsw_ctrl_if_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3231 | dpaa2_switch_free_dpio(ethsw); |
3232 | dpaa2_switch_destroy_rings(ethsw); |
3233 | dpaa2_switch_drain_bp(ethsw); |
3234 | dpaa2_switch_free_dpbp(ethsw); |
3235 | } |
3236 | |
3237 | static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev) |
3238 | { |
3239 | struct device *dev = &sw_dev->dev; |
3240 | struct ethsw_core *ethsw = dev_get_drvdata(dev); |
3241 | int err; |
3242 | |
3243 | dpaa2_switch_ctrl_if_teardown(ethsw); |
3244 | |
3245 | destroy_workqueue(wq: ethsw->workqueue); |
3246 | |
3247 | err = dpsw_close(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3248 | if (err) |
3249 | dev_warn(dev, "dpsw_close err %d\n" , err); |
3250 | } |
3251 | |
3252 | static void dpaa2_switch_remove(struct fsl_mc_device *sw_dev) |
3253 | { |
3254 | struct ethsw_port_priv *port_priv; |
3255 | struct ethsw_core *ethsw; |
3256 | struct device *dev; |
3257 | int i; |
3258 | |
3259 | dev = &sw_dev->dev; |
3260 | ethsw = dev_get_drvdata(dev); |
3261 | |
3262 | dpaa2_switch_teardown_irqs(sw_dev); |
3263 | |
3264 | dpsw_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3265 | |
3266 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
3267 | port_priv = ethsw->ports[i]; |
3268 | unregister_netdev(dev: port_priv->netdev); |
3269 | dpaa2_switch_remove_port(ethsw, port_idx: i); |
3270 | } |
3271 | |
3272 | kfree(objp: ethsw->fdbs); |
3273 | kfree(objp: ethsw->filter_blocks); |
3274 | kfree(objp: ethsw->ports); |
3275 | |
3276 | dpaa2_switch_teardown(sw_dev); |
3277 | |
3278 | fsl_mc_portal_free(mc_io: ethsw->mc_io); |
3279 | |
3280 | kfree(objp: ethsw); |
3281 | |
3282 | dev_set_drvdata(dev, NULL); |
3283 | } |
3284 | |
3285 | static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, |
3286 | u16 port_idx) |
3287 | { |
3288 | struct ethsw_port_priv *port_priv; |
3289 | struct device *dev = ethsw->dev; |
3290 | struct net_device *port_netdev; |
3291 | int err; |
3292 | |
3293 | port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); |
3294 | if (!port_netdev) { |
3295 | dev_err(dev, "alloc_etherdev error\n" ); |
3296 | return -ENOMEM; |
3297 | } |
3298 | |
3299 | port_priv = netdev_priv(dev: port_netdev); |
3300 | port_priv->netdev = port_netdev; |
3301 | port_priv->ethsw_data = ethsw; |
3302 | |
3303 | mutex_init(&port_priv->mac_lock); |
3304 | |
3305 | port_priv->idx = port_idx; |
3306 | port_priv->stp_state = BR_STATE_FORWARDING; |
3307 | |
3308 | SET_NETDEV_DEV(port_netdev, dev); |
3309 | port_netdev->netdev_ops = &dpaa2_switch_port_ops; |
3310 | port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops; |
3311 | |
3312 | port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM; |
3313 | |
3314 | port_priv->bcast_flood = true; |
3315 | port_priv->ucast_flood = true; |
3316 | |
3317 | /* Set MTU limits */ |
3318 | port_netdev->min_mtu = ETH_MIN_MTU; |
3319 | port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; |
3320 | |
3321 | /* Populate the private port structure so that later calls to |
3322 | * dpaa2_switch_port_init() can use it. |
3323 | */ |
3324 | ethsw->ports[port_idx] = port_priv; |
3325 | |
3326 | /* The DPAA2 switch's ingress path depends on the VLAN table, |
3327 | * thus we are not able to disable VLAN filtering. |
3328 | */ |
3329 | port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | |
3330 | NETIF_F_HW_VLAN_STAG_FILTER | |
3331 | NETIF_F_HW_TC; |
3332 | port_netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
3333 | |
3334 | err = dpaa2_switch_port_init(port_priv, port: port_idx); |
3335 | if (err) |
3336 | goto err_port_probe; |
3337 | |
3338 | err = dpaa2_switch_port_set_mac_addr(port_priv); |
3339 | if (err) |
3340 | goto err_port_probe; |
3341 | |
3342 | err = dpaa2_switch_port_set_learning(port_priv, enable: false); |
3343 | if (err) |
3344 | goto err_port_probe; |
3345 | port_priv->learn_ena = false; |
3346 | |
3347 | err = dpaa2_switch_port_connect_mac(port_priv); |
3348 | if (err) |
3349 | goto err_port_probe; |
3350 | |
3351 | return 0; |
3352 | |
3353 | err_port_probe: |
3354 | free_netdev(dev: port_netdev); |
3355 | ethsw->ports[port_idx] = NULL; |
3356 | |
3357 | return err; |
3358 | } |
3359 | |
3360 | static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev) |
3361 | { |
3362 | struct device *dev = &sw_dev->dev; |
3363 | struct ethsw_core *ethsw; |
3364 | int i, err; |
3365 | |
3366 | /* Allocate switch core*/ |
3367 | ethsw = kzalloc(size: sizeof(*ethsw), GFP_KERNEL); |
3368 | |
3369 | if (!ethsw) |
3370 | return -ENOMEM; |
3371 | |
3372 | ethsw->dev = dev; |
3373 | ethsw->iommu_domain = iommu_get_domain_for_dev(dev); |
3374 | dev_set_drvdata(dev, data: ethsw); |
3375 | |
3376 | err = fsl_mc_portal_allocate(mc_dev: sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, |
3377 | new_mc_io: ðsw->mc_io); |
3378 | if (err) { |
3379 | if (err == -ENXIO) |
3380 | err = -EPROBE_DEFER; |
3381 | else |
3382 | dev_err(dev, "fsl_mc_portal_allocate err %d\n" , err); |
3383 | goto err_free_drvdata; |
3384 | } |
3385 | |
3386 | err = dpaa2_switch_init(sw_dev); |
3387 | if (err) |
3388 | goto err_free_cmdport; |
3389 | |
3390 | ethsw->ports = kcalloc(n: ethsw->sw_attr.num_ifs, size: sizeof(*ethsw->ports), |
3391 | GFP_KERNEL); |
3392 | if (!(ethsw->ports)) { |
3393 | err = -ENOMEM; |
3394 | goto err_teardown; |
3395 | } |
3396 | |
3397 | ethsw->fdbs = kcalloc(n: ethsw->sw_attr.num_ifs, size: sizeof(*ethsw->fdbs), |
3398 | GFP_KERNEL); |
3399 | if (!ethsw->fdbs) { |
3400 | err = -ENOMEM; |
3401 | goto err_free_ports; |
3402 | } |
3403 | |
3404 | ethsw->filter_blocks = kcalloc(n: ethsw->sw_attr.num_ifs, |
3405 | size: sizeof(*ethsw->filter_blocks), |
3406 | GFP_KERNEL); |
3407 | if (!ethsw->filter_blocks) { |
3408 | err = -ENOMEM; |
3409 | goto err_free_fdbs; |
3410 | } |
3411 | |
3412 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
3413 | err = dpaa2_switch_probe_port(ethsw, port_idx: i); |
3414 | if (err) |
3415 | goto err_free_netdev; |
3416 | } |
3417 | |
3418 | /* Add a NAPI instance for each of the Rx queues. The first port's |
3419 | * net_device will be associated with the instances since we do not have |
3420 | * different queues for each switch ports. |
3421 | */ |
3422 | for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) |
3423 | netif_napi_add(dev: ethsw->ports[0]->netdev, napi: ðsw->fq[i].napi, |
3424 | poll: dpaa2_switch_poll); |
3425 | |
3426 | /* Setup IRQs */ |
3427 | err = dpaa2_switch_setup_irqs(sw_dev); |
3428 | if (err) |
3429 | goto err_stop; |
3430 | |
3431 | /* By convention, if the mirror port is equal to the number of switch |
3432 | * interfaces, then mirroring of any kind is disabled. |
3433 | */ |
3434 | ethsw->mirror_port = ethsw->sw_attr.num_ifs; |
3435 | |
3436 | /* Register the netdev only when the entire setup is done and the |
3437 | * switch port interfaces are ready to receive traffic |
3438 | */ |
3439 | for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
3440 | err = register_netdev(dev: ethsw->ports[i]->netdev); |
3441 | if (err < 0) { |
3442 | dev_err(dev, "register_netdev error %d\n" , err); |
3443 | goto err_unregister_ports; |
3444 | } |
3445 | } |
3446 | |
3447 | return 0; |
3448 | |
3449 | err_unregister_ports: |
3450 | for (i--; i >= 0; i--) |
3451 | unregister_netdev(dev: ethsw->ports[i]->netdev); |
3452 | dpaa2_switch_teardown_irqs(sw_dev); |
3453 | err_stop: |
3454 | dpsw_disable(mc_io: ethsw->mc_io, cmd_flags: 0, token: ethsw->dpsw_handle); |
3455 | err_free_netdev: |
3456 | for (i--; i >= 0; i--) |
3457 | dpaa2_switch_remove_port(ethsw, port_idx: i); |
3458 | kfree(objp: ethsw->filter_blocks); |
3459 | err_free_fdbs: |
3460 | kfree(objp: ethsw->fdbs); |
3461 | err_free_ports: |
3462 | kfree(objp: ethsw->ports); |
3463 | |
3464 | err_teardown: |
3465 | dpaa2_switch_teardown(sw_dev); |
3466 | |
3467 | err_free_cmdport: |
3468 | fsl_mc_portal_free(mc_io: ethsw->mc_io); |
3469 | |
3470 | err_free_drvdata: |
3471 | kfree(objp: ethsw); |
3472 | dev_set_drvdata(dev, NULL); |
3473 | |
3474 | return err; |
3475 | } |
3476 | |
3477 | static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = { |
3478 | { |
3479 | .vendor = FSL_MC_VENDOR_FREESCALE, |
3480 | .obj_type = "dpsw" , |
3481 | }, |
3482 | { .vendor = 0x0 } |
3483 | }; |
3484 | MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table); |
3485 | |
3486 | static struct fsl_mc_driver dpaa2_switch_drv = { |
3487 | .driver = { |
3488 | .name = KBUILD_MODNAME, |
3489 | }, |
3490 | .probe = dpaa2_switch_probe, |
3491 | .remove = dpaa2_switch_remove, |
3492 | .match_id_table = dpaa2_switch_match_id_table |
3493 | }; |
3494 | |
3495 | static struct notifier_block dpaa2_switch_port_nb __read_mostly = { |
3496 | .notifier_call = dpaa2_switch_port_netdevice_event, |
3497 | }; |
3498 | |
3499 | static struct notifier_block dpaa2_switch_port_switchdev_nb = { |
3500 | .notifier_call = dpaa2_switch_port_event, |
3501 | }; |
3502 | |
3503 | static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = { |
3504 | .notifier_call = dpaa2_switch_port_blocking_event, |
3505 | }; |
3506 | |
3507 | static int dpaa2_switch_register_notifiers(void) |
3508 | { |
3509 | int err; |
3510 | |
3511 | err = register_netdevice_notifier(nb: &dpaa2_switch_port_nb); |
3512 | if (err) { |
3513 | pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n" , err); |
3514 | return err; |
3515 | } |
3516 | |
3517 | err = register_switchdev_notifier(nb: &dpaa2_switch_port_switchdev_nb); |
3518 | if (err) { |
3519 | pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n" , err); |
3520 | goto err_switchdev_nb; |
3521 | } |
3522 | |
3523 | err = register_switchdev_blocking_notifier(nb: &dpaa2_switch_port_switchdev_blocking_nb); |
3524 | if (err) { |
3525 | pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n" , err); |
3526 | goto err_switchdev_blocking_nb; |
3527 | } |
3528 | |
3529 | return 0; |
3530 | |
3531 | err_switchdev_blocking_nb: |
3532 | unregister_switchdev_notifier(nb: &dpaa2_switch_port_switchdev_nb); |
3533 | err_switchdev_nb: |
3534 | unregister_netdevice_notifier(nb: &dpaa2_switch_port_nb); |
3535 | |
3536 | return err; |
3537 | } |
3538 | |
3539 | static void dpaa2_switch_unregister_notifiers(void) |
3540 | { |
3541 | int err; |
3542 | |
3543 | err = unregister_switchdev_blocking_notifier(nb: &dpaa2_switch_port_switchdev_blocking_nb); |
3544 | if (err) |
3545 | pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n" , |
3546 | err); |
3547 | |
3548 | err = unregister_switchdev_notifier(nb: &dpaa2_switch_port_switchdev_nb); |
3549 | if (err) |
3550 | pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n" , err); |
3551 | |
3552 | err = unregister_netdevice_notifier(nb: &dpaa2_switch_port_nb); |
3553 | if (err) |
3554 | pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n" , err); |
3555 | } |
3556 | |
3557 | static int __init dpaa2_switch_driver_init(void) |
3558 | { |
3559 | int err; |
3560 | |
3561 | err = fsl_mc_driver_register(&dpaa2_switch_drv); |
3562 | if (err) |
3563 | return err; |
3564 | |
3565 | err = dpaa2_switch_register_notifiers(); |
3566 | if (err) { |
3567 | fsl_mc_driver_unregister(driver: &dpaa2_switch_drv); |
3568 | return err; |
3569 | } |
3570 | |
3571 | return 0; |
3572 | } |
3573 | |
3574 | static void __exit dpaa2_switch_driver_exit(void) |
3575 | { |
3576 | dpaa2_switch_unregister_notifiers(); |
3577 | fsl_mc_driver_unregister(driver: &dpaa2_switch_drv); |
3578 | } |
3579 | |
3580 | module_init(dpaa2_switch_driver_init); |
3581 | module_exit(dpaa2_switch_driver_exit); |
3582 | |
3583 | MODULE_LICENSE("GPL v2" ); |
3584 | MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver" ); |
3585 | |