2 * Copyright (c) 2018 Cumulus Networks. All rights reserved.
3 * Copyright (c) 2018 David Ahern <dsa@cumulusnetworks.com>
4 * Copyright (c) 2019 Mellanox Technologies. All rights reserved.
6 * This software is licensed under the GNU General License Version 2,
7 * June 1991 as shown in the file COPYING in the top-level directory of this
10 * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
11 * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
12 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
14 * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
15 * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
18 #include <linux/debugfs.h>
19 #include <linux/device.h>
20 #include <linux/etherdevice.h>
21 #include <linux/inet.h>
22 #include <linux/jiffies.h>
23 #include <linux/kernel.h>
24 #include <linux/list.h>
25 #include <linux/mutex.h>
26 #include <linux/random.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/workqueue.h>
29 #include <net/devlink.h>
31 #include <net/flow_offload.h>
32 #include <uapi/linux/devlink.h>
33 #include <uapi/linux/ip.h>
34 #include <uapi/linux/udp.h>
36 #include "netdevsim.h"
39 nsim_dev_port_index(enum nsim_dev_port_type type, unsigned int port_index)
42 case NSIM_DEV_PORT_TYPE_VF:
43 port_index = NSIM_DEV_VF_PORT_INDEX_BASE + port_index;
45 case NSIM_DEV_PORT_TYPE_PF:
52 static inline unsigned int nsim_dev_port_index_to_vf_index(unsigned int port_index)
54 return port_index - NSIM_DEV_VF_PORT_INDEX_BASE;
57 static struct dentry *nsim_dev_ddir;
59 unsigned int nsim_dev_get_vfs(struct nsim_dev *nsim_dev)
61 WARN_ON(!lockdep_rtnl_is_held() &&
62 !devl_lock_is_held(priv_to_devlink(nsim_dev)));
64 return nsim_dev->nsim_bus_dev->num_vfs;
68 nsim_bus_dev_set_vfs(struct nsim_bus_dev *nsim_bus_dev, unsigned int num_vfs)
71 nsim_bus_dev->num_vfs = num_vfs;
75 #define NSIM_DEV_DUMMY_REGION_SIZE (1024 * 32)
78 nsim_dev_take_snapshot(struct devlink *devlink,
79 const struct devlink_region_ops *ops,
80 struct netlink_ext_ack *extack,
85 dummy_data = kmalloc(NSIM_DEV_DUMMY_REGION_SIZE, GFP_KERNEL);
89 get_random_bytes(dummy_data, NSIM_DEV_DUMMY_REGION_SIZE);
96 static ssize_t nsim_dev_take_snapshot_write(struct file *file,
97 const char __user *data,
98 size_t count, loff_t *ppos)
100 struct nsim_dev *nsim_dev = file->private_data;
101 struct devlink *devlink;
106 devlink = priv_to_devlink(nsim_dev);
108 err = nsim_dev_take_snapshot(devlink, NULL, NULL, &dummy_data);
112 err = devlink_region_snapshot_id_get(devlink, &id);
114 pr_err("Failed to get snapshot id\n");
118 err = devlink_region_snapshot_create(nsim_dev->dummy_region,
120 devlink_region_snapshot_id_put(devlink, id);
122 pr_err("Failed to create region snapshot\n");
130 static const struct file_operations nsim_dev_take_snapshot_fops = {
132 .write = nsim_dev_take_snapshot_write,
133 .llseek = generic_file_llseek,
134 .owner = THIS_MODULE,
137 static ssize_t nsim_dev_trap_fa_cookie_read(struct file *file,
139 size_t count, loff_t *ppos)
141 struct nsim_dev *nsim_dev = file->private_data;
142 struct flow_action_cookie *fa_cookie;
143 unsigned int buf_len;
147 spin_lock(&nsim_dev->fa_cookie_lock);
148 fa_cookie = nsim_dev->fa_cookie;
153 buf_len = fa_cookie->cookie_len * 2;
154 buf = kmalloc(buf_len, GFP_ATOMIC);
159 bin2hex(buf, fa_cookie->cookie, fa_cookie->cookie_len);
160 spin_unlock(&nsim_dev->fa_cookie_lock);
162 ret = simple_read_from_buffer(data, count, ppos, buf, buf_len);
168 spin_unlock(&nsim_dev->fa_cookie_lock);
172 static ssize_t nsim_dev_trap_fa_cookie_write(struct file *file,
173 const char __user *data,
174 size_t count, loff_t *ppos)
176 struct nsim_dev *nsim_dev = file->private_data;
177 struct flow_action_cookie *fa_cookie;
184 cookie_len = (count - 1) / 2;
187 buf = kmalloc(count, GFP_KERNEL | __GFP_NOWARN);
191 ret = simple_write_to_buffer(buf, count, ppos, data, count);
195 fa_cookie = kmalloc(sizeof(*fa_cookie) + cookie_len,
196 GFP_KERNEL | __GFP_NOWARN);
202 fa_cookie->cookie_len = cookie_len;
203 ret = hex2bin(fa_cookie->cookie, buf, cookie_len);
208 spin_lock(&nsim_dev->fa_cookie_lock);
209 kfree(nsim_dev->fa_cookie);
210 nsim_dev->fa_cookie = fa_cookie;
211 spin_unlock(&nsim_dev->fa_cookie_lock);
222 static const struct file_operations nsim_dev_trap_fa_cookie_fops = {
224 .read = nsim_dev_trap_fa_cookie_read,
225 .write = nsim_dev_trap_fa_cookie_write,
226 .llseek = generic_file_llseek,
227 .owner = THIS_MODULE,
230 static ssize_t nsim_bus_dev_max_vfs_read(struct file *file, char __user *data,
231 size_t count, loff_t *ppos)
233 struct nsim_dev *nsim_dev = file->private_data;
237 len = scnprintf(buf, sizeof(buf), "%u\n",
238 READ_ONCE(nsim_dev->nsim_bus_dev->max_vfs));
240 return simple_read_from_buffer(data, count, ppos, buf, len);
243 static ssize_t nsim_bus_dev_max_vfs_write(struct file *file,
244 const char __user *data,
245 size_t count, loff_t *ppos)
247 struct nsim_vf_config *vfconfigs;
248 struct nsim_dev *nsim_dev;
256 if (count >= sizeof(buf))
259 ret = copy_from_user(buf, data, count);
264 ret = kstrtouint(buf, 10, &val);
268 /* max_vfs limited by the maximum number of provided port indexes */
269 if (val > NSIM_DEV_VF_PORT_INDEX_MAX - NSIM_DEV_VF_PORT_INDEX_BASE)
272 vfconfigs = kcalloc(val, sizeof(struct nsim_vf_config),
273 GFP_KERNEL | __GFP_NOWARN);
277 nsim_dev = file->private_data;
278 devl_lock(priv_to_devlink(nsim_dev));
279 /* Reject if VFs are configured */
280 if (nsim_dev_get_vfs(nsim_dev)) {
283 swap(nsim_dev->vfconfigs, vfconfigs);
284 WRITE_ONCE(nsim_dev->nsim_bus_dev->max_vfs, val);
288 devl_unlock(priv_to_devlink(nsim_dev));
294 static const struct file_operations nsim_dev_max_vfs_fops = {
296 .read = nsim_bus_dev_max_vfs_read,
297 .write = nsim_bus_dev_max_vfs_write,
298 .llseek = generic_file_llseek,
299 .owner = THIS_MODULE,
302 static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
304 char dev_ddir_name[sizeof(DRV_NAME) + 10];
307 sprintf(dev_ddir_name, DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id);
308 nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir);
309 if (IS_ERR(nsim_dev->ddir))
310 return PTR_ERR(nsim_dev->ddir);
311 nsim_dev->ports_ddir = debugfs_create_dir("ports", nsim_dev->ddir);
312 if (IS_ERR(nsim_dev->ports_ddir)) {
313 err = PTR_ERR(nsim_dev->ports_ddir);
316 debugfs_create_bool("fw_update_status", 0600, nsim_dev->ddir,
317 &nsim_dev->fw_update_status);
318 debugfs_create_u32("fw_update_overwrite_mask", 0600, nsim_dev->ddir,
319 &nsim_dev->fw_update_overwrite_mask);
320 debugfs_create_u32("max_macs", 0600, nsim_dev->ddir,
321 &nsim_dev->max_macs);
322 debugfs_create_bool("test1", 0600, nsim_dev->ddir,
324 nsim_dev->take_snapshot = debugfs_create_file("take_snapshot",
328 &nsim_dev_take_snapshot_fops);
329 debugfs_create_bool("dont_allow_reload", 0600, nsim_dev->ddir,
330 &nsim_dev->dont_allow_reload);
331 debugfs_create_bool("fail_reload", 0600, nsim_dev->ddir,
332 &nsim_dev->fail_reload);
333 debugfs_create_file("trap_flow_action_cookie", 0600, nsim_dev->ddir,
334 nsim_dev, &nsim_dev_trap_fa_cookie_fops);
335 debugfs_create_bool("fail_trap_group_set", 0600,
337 &nsim_dev->fail_trap_group_set);
338 debugfs_create_bool("fail_trap_policer_set", 0600,
340 &nsim_dev->fail_trap_policer_set);
341 debugfs_create_bool("fail_trap_policer_counter_get", 0600,
343 &nsim_dev->fail_trap_policer_counter_get);
344 /* caution, dev_max_vfs write takes devlink lock */
345 debugfs_create_file("max_vfs", 0600, nsim_dev->ddir,
346 nsim_dev, &nsim_dev_max_vfs_fops);
348 nsim_dev->nodes_ddir = debugfs_create_dir("rate_nodes", nsim_dev->ddir);
349 if (IS_ERR(nsim_dev->nodes_ddir)) {
350 err = PTR_ERR(nsim_dev->nodes_ddir);
353 debugfs_create_bool("fail_trap_drop_counter_get", 0600,
355 &nsim_dev->fail_trap_drop_counter_get);
356 nsim_udp_tunnels_debugfs_create(nsim_dev);
360 debugfs_remove_recursive(nsim_dev->ports_ddir);
362 debugfs_remove_recursive(nsim_dev->ddir);
366 static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev)
368 debugfs_remove_recursive(nsim_dev->nodes_ddir);
369 debugfs_remove_recursive(nsim_dev->ports_ddir);
370 debugfs_remove_recursive(nsim_dev->ddir);
373 static ssize_t nsim_dev_rate_parent_read(struct file *file,
375 size_t count, loff_t *ppos)
377 char **name_ptr = file->private_data;
383 len = strlen(*name_ptr);
384 return simple_read_from_buffer(data, count, ppos, *name_ptr, len);
387 static const struct file_operations nsim_dev_rate_parent_fops = {
389 .read = nsim_dev_rate_parent_read,
390 .llseek = generic_file_llseek,
391 .owner = THIS_MODULE,
394 static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev,
395 struct nsim_dev_port *nsim_dev_port)
397 struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
398 unsigned int port_index = nsim_dev_port->port_index;
399 char port_ddir_name[16];
400 char dev_link_name[32];
402 sprintf(port_ddir_name, "%u", port_index);
403 nsim_dev_port->ddir = debugfs_create_dir(port_ddir_name,
404 nsim_dev->ports_ddir);
405 if (IS_ERR(nsim_dev_port->ddir))
406 return PTR_ERR(nsim_dev_port->ddir);
408 sprintf(dev_link_name, "../../../" DRV_NAME "%u", nsim_bus_dev->dev.id);
409 if (nsim_dev_port_is_vf(nsim_dev_port)) {
410 unsigned int vf_id = nsim_dev_port_index_to_vf_index(port_index);
412 debugfs_create_u16("tx_share", 0400, nsim_dev_port->ddir,
413 &nsim_dev->vfconfigs[vf_id].min_tx_rate);
414 debugfs_create_u16("tx_max", 0400, nsim_dev_port->ddir,
415 &nsim_dev->vfconfigs[vf_id].max_tx_rate);
416 nsim_dev_port->rate_parent = debugfs_create_file("rate_parent",
419 &nsim_dev_port->parent_name,
420 &nsim_dev_rate_parent_fops);
422 debugfs_create_symlink("dev", nsim_dev_port->ddir, dev_link_name);
427 static void nsim_dev_port_debugfs_exit(struct nsim_dev_port *nsim_dev_port)
429 debugfs_remove_recursive(nsim_dev_port->ddir);
432 static int nsim_dev_resources_register(struct devlink *devlink)
434 struct devlink_resource_size_params params = {
436 .size_granularity = 1,
437 .unit = DEVLINK_RESOURCE_UNIT_ENTRY
441 /* Resources for IPv4 */
442 err = devl_resource_register(devlink, "IPv4", (u64)-1,
444 DEVLINK_RESOURCE_ID_PARENT_TOP,
447 pr_err("Failed to register IPv4 top resource\n");
451 err = devl_resource_register(devlink, "fib", (u64)-1,
452 NSIM_RESOURCE_IPV4_FIB,
453 NSIM_RESOURCE_IPV4, ¶ms);
455 pr_err("Failed to register IPv4 FIB resource\n");
459 err = devl_resource_register(devlink, "fib-rules", (u64)-1,
460 NSIM_RESOURCE_IPV4_FIB_RULES,
461 NSIM_RESOURCE_IPV4, ¶ms);
463 pr_err("Failed to register IPv4 FIB rules resource\n");
467 /* Resources for IPv6 */
468 err = devl_resource_register(devlink, "IPv6", (u64)-1,
470 DEVLINK_RESOURCE_ID_PARENT_TOP,
473 pr_err("Failed to register IPv6 top resource\n");
477 err = devl_resource_register(devlink, "fib", (u64)-1,
478 NSIM_RESOURCE_IPV6_FIB,
479 NSIM_RESOURCE_IPV6, ¶ms);
481 pr_err("Failed to register IPv6 FIB resource\n");
485 err = devl_resource_register(devlink, "fib-rules", (u64)-1,
486 NSIM_RESOURCE_IPV6_FIB_RULES,
487 NSIM_RESOURCE_IPV6, ¶ms);
489 pr_err("Failed to register IPv6 FIB rules resource\n");
493 /* Resources for nexthops */
494 err = devl_resource_register(devlink, "nexthops", (u64)-1,
495 NSIM_RESOURCE_NEXTHOPS,
496 DEVLINK_RESOURCE_ID_PARENT_TOP,
499 pr_err("Failed to register NEXTHOPS resource\n");
505 devl_resources_unregister(devlink);
509 enum nsim_devlink_param_id {
510 NSIM_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
511 NSIM_DEVLINK_PARAM_ID_TEST1,
514 static const struct devlink_param nsim_devlink_params[] = {
515 DEVLINK_PARAM_GENERIC(MAX_MACS,
516 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
518 DEVLINK_PARAM_DRIVER(NSIM_DEVLINK_PARAM_ID_TEST1,
519 "test1", DEVLINK_PARAM_TYPE_BOOL,
520 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
524 static void nsim_devlink_set_params_init_values(struct nsim_dev *nsim_dev,
525 struct devlink *devlink)
527 union devlink_param_value value;
529 value.vu32 = nsim_dev->max_macs;
530 devlink_param_driverinit_value_set(devlink,
531 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
533 value.vbool = nsim_dev->test1;
534 devlink_param_driverinit_value_set(devlink,
535 NSIM_DEVLINK_PARAM_ID_TEST1,
539 static void nsim_devlink_param_load_driverinit_values(struct devlink *devlink)
541 struct nsim_dev *nsim_dev = devlink_priv(devlink);
542 union devlink_param_value saved_value;
545 err = devlink_param_driverinit_value_get(devlink,
546 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
549 nsim_dev->max_macs = saved_value.vu32;
550 err = devlink_param_driverinit_value_get(devlink,
551 NSIM_DEVLINK_PARAM_ID_TEST1,
554 nsim_dev->test1 = saved_value.vbool;
557 #define NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX 16
559 static const struct devlink_region_ops dummy_region_ops = {
561 .destructor = &kfree,
562 .snapshot = nsim_dev_take_snapshot,
565 static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev,
566 struct devlink *devlink)
568 nsim_dev->dummy_region =
569 devl_region_create(devlink, &dummy_region_ops,
570 NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX,
571 NSIM_DEV_DUMMY_REGION_SIZE);
572 return PTR_ERR_OR_ZERO(nsim_dev->dummy_region);
575 static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev)
577 devl_region_destroy(nsim_dev->dummy_region);
581 __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
582 unsigned int port_index);
583 static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port);
585 static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev,
586 struct netlink_ext_ack *extack)
588 struct devlink *devlink = priv_to_devlink(nsim_dev);
589 struct nsim_dev_port *nsim_dev_port, *tmp;
591 devl_rate_nodes_destroy(devlink);
592 list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list)
593 if (nsim_dev_port_is_vf(nsim_dev_port))
594 __nsim_dev_port_del(nsim_dev_port);
595 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
599 static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev,
600 struct netlink_ext_ack *extack)
602 struct nsim_dev_port *nsim_dev_port, *tmp;
605 for (i = 0; i < nsim_dev_get_vfs(nsim_dev); i++) {
606 err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_VF, i);
608 NL_SET_ERR_MSG_MOD(extack, "Failed to initialize VFs' netdevsim ports");
609 pr_err("Failed to initialize VF id=%d. %d.\n", i, err);
610 goto err_port_add_vfs;
613 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
617 list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list)
618 if (nsim_dev_port_is_vf(nsim_dev_port))
619 __nsim_dev_port_del(nsim_dev_port);
623 static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
624 struct netlink_ext_ack *extack)
626 struct nsim_dev *nsim_dev = devlink_priv(devlink);
628 if (mode == nsim_dev->esw_mode)
631 if (mode == DEVLINK_ESWITCH_MODE_LEGACY)
632 return nsim_esw_legacy_enable(nsim_dev, extack);
633 if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
634 return nsim_esw_switchdev_enable(nsim_dev, extack);
639 static int nsim_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
641 struct nsim_dev *nsim_dev = devlink_priv(devlink);
643 *mode = nsim_dev->esw_mode;
647 struct nsim_trap_item {
649 enum devlink_trap_action action;
652 struct nsim_trap_data {
653 struct delayed_work trap_report_dw;
654 struct nsim_trap_item *trap_items_arr;
655 u64 *trap_policers_cnt_arr;
657 struct nsim_dev *nsim_dev;
658 spinlock_t trap_lock; /* Protects trap_items_arr */
661 /* All driver-specific traps must be documented in
662 * Documentation/networking/devlink/netdevsim.rst
665 NSIM_TRAP_ID_BASE = DEVLINK_TRAP_GENERIC_ID_MAX,
666 NSIM_TRAP_ID_FID_MISS,
669 #define NSIM_TRAP_NAME_FID_MISS "fid_miss"
671 #define NSIM_TRAP_METADATA DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT
673 #define NSIM_TRAP_DROP(_id, _group_id) \
674 DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
675 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
677 #define NSIM_TRAP_DROP_EXT(_id, _group_id, _metadata) \
678 DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
679 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
680 NSIM_TRAP_METADATA | (_metadata))
681 #define NSIM_TRAP_EXCEPTION(_id, _group_id) \
682 DEVLINK_TRAP_GENERIC(EXCEPTION, TRAP, _id, \
683 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
685 #define NSIM_TRAP_CONTROL(_id, _group_id, _action) \
686 DEVLINK_TRAP_GENERIC(CONTROL, _action, _id, \
687 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
689 #define NSIM_TRAP_DRIVER_EXCEPTION(_id, _group_id) \
690 DEVLINK_TRAP_DRIVER(EXCEPTION, TRAP, NSIM_TRAP_ID_##_id, \
691 NSIM_TRAP_NAME_##_id, \
692 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
695 #define NSIM_DEV_TRAP_POLICER_MIN_RATE 1
696 #define NSIM_DEV_TRAP_POLICER_MAX_RATE 8000
697 #define NSIM_DEV_TRAP_POLICER_MIN_BURST 8
698 #define NSIM_DEV_TRAP_POLICER_MAX_BURST 65536
700 #define NSIM_TRAP_POLICER(_id, _rate, _burst) \
701 DEVLINK_TRAP_POLICER(_id, _rate, _burst, \
702 NSIM_DEV_TRAP_POLICER_MAX_RATE, \
703 NSIM_DEV_TRAP_POLICER_MIN_RATE, \
704 NSIM_DEV_TRAP_POLICER_MAX_BURST, \
705 NSIM_DEV_TRAP_POLICER_MIN_BURST)
707 static const struct devlink_trap_policer nsim_trap_policers_arr[] = {
708 NSIM_TRAP_POLICER(1, 1000, 128),
709 NSIM_TRAP_POLICER(2, 2000, 256),
710 NSIM_TRAP_POLICER(3, 3000, 512),
713 static const struct devlink_trap_group nsim_trap_groups_arr[] = {
714 DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS, 0),
715 DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS, 1),
716 DEVLINK_TRAP_GROUP_GENERIC(L3_EXCEPTIONS, 1),
717 DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS, 2),
718 DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS, 3),
719 DEVLINK_TRAP_GROUP_GENERIC(MC_SNOOPING, 3),
722 static const struct devlink_trap nsim_traps_arr[] = {
723 NSIM_TRAP_DROP(SMAC_MC, L2_DROPS),
724 NSIM_TRAP_DROP(VLAN_TAG_MISMATCH, L2_DROPS),
725 NSIM_TRAP_DROP(INGRESS_VLAN_FILTER, L2_DROPS),
726 NSIM_TRAP_DROP(INGRESS_STP_FILTER, L2_DROPS),
727 NSIM_TRAP_DROP(EMPTY_TX_LIST, L2_DROPS),
728 NSIM_TRAP_DROP(PORT_LOOPBACK_FILTER, L2_DROPS),
729 NSIM_TRAP_DRIVER_EXCEPTION(FID_MISS, L2_DROPS),
730 NSIM_TRAP_DROP(BLACKHOLE_ROUTE, L3_DROPS),
731 NSIM_TRAP_EXCEPTION(TTL_ERROR, L3_EXCEPTIONS),
732 NSIM_TRAP_DROP(TAIL_DROP, BUFFER_DROPS),
733 NSIM_TRAP_DROP_EXT(INGRESS_FLOW_ACTION_DROP, ACL_DROPS,
734 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE),
735 NSIM_TRAP_DROP_EXT(EGRESS_FLOW_ACTION_DROP, ACL_DROPS,
736 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE),
737 NSIM_TRAP_CONTROL(IGMP_QUERY, MC_SNOOPING, MIRROR),
738 NSIM_TRAP_CONTROL(IGMP_V1_REPORT, MC_SNOOPING, TRAP),
741 #define NSIM_TRAP_L4_DATA_LEN 100
743 static struct sk_buff *nsim_dev_trap_skb_build(void)
745 int tot_len, data_len = NSIM_TRAP_L4_DATA_LEN;
751 skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC);
754 tot_len = sizeof(struct iphdr) + sizeof(struct udphdr) + data_len;
756 skb_reset_mac_header(skb);
757 eth = skb_put(skb, sizeof(struct ethhdr));
758 eth_random_addr(eth->h_dest);
759 eth_random_addr(eth->h_source);
760 eth->h_proto = htons(ETH_P_IP);
761 skb->protocol = htons(ETH_P_IP);
763 skb_set_network_header(skb, skb->len);
764 iph = skb_put(skb, sizeof(struct iphdr));
765 iph->protocol = IPPROTO_UDP;
766 iph->saddr = in_aton("192.0.2.1");
767 iph->daddr = in_aton("198.51.100.1");
771 iph->tot_len = htons(tot_len);
774 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
776 skb_set_transport_header(skb, skb->len);
777 udph = skb_put_zero(skb, sizeof(struct udphdr) + data_len);
778 get_random_bytes(&udph->source, sizeof(u16));
779 get_random_bytes(&udph->dest, sizeof(u16));
780 udph->len = htons(sizeof(struct udphdr) + data_len);
785 static void nsim_dev_trap_report(struct nsim_dev_port *nsim_dev_port)
787 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
788 struct devlink *devlink = priv_to_devlink(nsim_dev);
789 struct nsim_trap_data *nsim_trap_data;
792 nsim_trap_data = nsim_dev->trap_data;
794 spin_lock(&nsim_trap_data->trap_lock);
795 for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) {
796 struct flow_action_cookie *fa_cookie = NULL;
797 struct nsim_trap_item *nsim_trap_item;
801 has_fa_cookie = nsim_traps_arr[i].metadata_cap &
802 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE;
804 nsim_trap_item = &nsim_trap_data->trap_items_arr[i];
805 if (nsim_trap_item->action == DEVLINK_TRAP_ACTION_DROP)
808 skb = nsim_dev_trap_skb_build();
811 skb->dev = nsim_dev_port->ns->netdev;
813 /* Trapped packets are usually passed to devlink in softIRQ,
814 * but in this case they are generated in a workqueue. Disable
815 * softIRQs to prevent lockdep from complaining about
816 * "incosistent lock state".
819 spin_lock_bh(&nsim_dev->fa_cookie_lock);
820 fa_cookie = has_fa_cookie ? nsim_dev->fa_cookie : NULL;
821 devlink_trap_report(devlink, skb, nsim_trap_item->trap_ctx,
822 &nsim_dev_port->devlink_port, fa_cookie);
823 spin_unlock_bh(&nsim_dev->fa_cookie_lock);
826 spin_unlock(&nsim_trap_data->trap_lock);
829 #define NSIM_TRAP_REPORT_INTERVAL_MS 100
831 static void nsim_dev_trap_report_work(struct work_struct *work)
833 struct nsim_trap_data *nsim_trap_data;
834 struct nsim_dev_port *nsim_dev_port;
835 struct nsim_dev *nsim_dev;
837 nsim_trap_data = container_of(work, struct nsim_trap_data,
838 trap_report_dw.work);
839 nsim_dev = nsim_trap_data->nsim_dev;
841 /* For each running port and enabled packet trap, generate a UDP
842 * packet with a random 5-tuple and report it.
844 if (!devl_trylock(priv_to_devlink(nsim_dev))) {
845 schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, 0);
849 list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) {
850 if (!netif_running(nsim_dev_port->ns->netdev))
853 nsim_dev_trap_report(nsim_dev_port);
855 devl_unlock(priv_to_devlink(nsim_dev));
857 schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw,
858 msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS));
861 static int nsim_dev_traps_init(struct devlink *devlink)
863 size_t policers_count = ARRAY_SIZE(nsim_trap_policers_arr);
864 struct nsim_dev *nsim_dev = devlink_priv(devlink);
865 struct nsim_trap_data *nsim_trap_data;
868 nsim_trap_data = kzalloc(sizeof(*nsim_trap_data), GFP_KERNEL);
872 nsim_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(nsim_traps_arr),
873 sizeof(struct nsim_trap_item),
875 if (!nsim_trap_data->trap_items_arr) {
877 goto err_trap_data_free;
880 nsim_trap_data->trap_policers_cnt_arr = kcalloc(policers_count,
883 if (!nsim_trap_data->trap_policers_cnt_arr) {
885 goto err_trap_items_free;
888 /* The lock is used to protect the action state of the registered
889 * traps. The value is written by user and read in delayed work when
890 * iterating over all the traps.
892 spin_lock_init(&nsim_trap_data->trap_lock);
893 nsim_trap_data->nsim_dev = nsim_dev;
894 nsim_dev->trap_data = nsim_trap_data;
896 err = devl_trap_policers_register(devlink, nsim_trap_policers_arr,
899 goto err_trap_policers_cnt_free;
901 err = devl_trap_groups_register(devlink, nsim_trap_groups_arr,
902 ARRAY_SIZE(nsim_trap_groups_arr));
904 goto err_trap_policers_unregister;
906 err = devl_traps_register(devlink, nsim_traps_arr,
907 ARRAY_SIZE(nsim_traps_arr), NULL);
909 goto err_trap_groups_unregister;
911 INIT_DELAYED_WORK(&nsim_dev->trap_data->trap_report_dw,
912 nsim_dev_trap_report_work);
913 schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw,
914 msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS));
918 err_trap_groups_unregister:
919 devl_trap_groups_unregister(devlink, nsim_trap_groups_arr,
920 ARRAY_SIZE(nsim_trap_groups_arr));
921 err_trap_policers_unregister:
922 devl_trap_policers_unregister(devlink, nsim_trap_policers_arr,
923 ARRAY_SIZE(nsim_trap_policers_arr));
924 err_trap_policers_cnt_free:
925 kfree(nsim_trap_data->trap_policers_cnt_arr);
927 kfree(nsim_trap_data->trap_items_arr);
929 kfree(nsim_trap_data);
933 static void nsim_dev_traps_exit(struct devlink *devlink)
935 struct nsim_dev *nsim_dev = devlink_priv(devlink);
937 /* caution, trap work takes devlink lock */
938 cancel_delayed_work_sync(&nsim_dev->trap_data->trap_report_dw);
939 devl_traps_unregister(devlink, nsim_traps_arr,
940 ARRAY_SIZE(nsim_traps_arr));
941 devl_trap_groups_unregister(devlink, nsim_trap_groups_arr,
942 ARRAY_SIZE(nsim_trap_groups_arr));
943 devl_trap_policers_unregister(devlink, nsim_trap_policers_arr,
944 ARRAY_SIZE(nsim_trap_policers_arr));
945 kfree(nsim_dev->trap_data->trap_policers_cnt_arr);
946 kfree(nsim_dev->trap_data->trap_items_arr);
947 kfree(nsim_dev->trap_data);
950 static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
951 struct netlink_ext_ack *extack);
952 static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev);
954 static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change,
955 enum devlink_reload_action action, enum devlink_reload_limit limit,
956 struct netlink_ext_ack *extack)
958 struct nsim_dev *nsim_dev = devlink_priv(devlink);
960 if (nsim_dev->dont_allow_reload) {
961 /* For testing purposes, user set debugfs dont_allow_reload
962 * value to true. So forbid it.
964 NL_SET_ERR_MSG_MOD(extack, "User forbid the reload for testing purposes");
968 nsim_dev_reload_destroy(nsim_dev);
972 static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_action action,
973 enum devlink_reload_limit limit, u32 *actions_performed,
974 struct netlink_ext_ack *extack)
976 struct nsim_dev *nsim_dev = devlink_priv(devlink);
978 if (nsim_dev->fail_reload) {
979 /* For testing purposes, user set debugfs fail_reload
980 * value to true. Fail right away.
982 NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes");
986 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
988 return nsim_dev_reload_create(nsim_dev, extack);
991 static int nsim_dev_info_get(struct devlink *devlink,
992 struct devlink_info_req *req,
993 struct netlink_ext_ack *extack)
997 err = devlink_info_driver_name_put(req, DRV_NAME);
1000 err = devlink_info_version_stored_put_ext(req, "fw.mgmt", "10.20.30",
1001 DEVLINK_INFO_VERSION_TYPE_COMPONENT);
1004 return devlink_info_version_running_put_ext(req, "fw.mgmt", "10.20.30",
1005 DEVLINK_INFO_VERSION_TYPE_COMPONENT);
1008 #define NSIM_DEV_FLASH_SIZE 500000
1009 #define NSIM_DEV_FLASH_CHUNK_SIZE 1000
1010 #define NSIM_DEV_FLASH_CHUNK_TIME_MS 10
1012 static int nsim_dev_flash_update(struct devlink *devlink,
1013 struct devlink_flash_update_params *params,
1014 struct netlink_ext_ack *extack)
1016 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1019 if ((params->overwrite_mask & ~nsim_dev->fw_update_overwrite_mask) != 0)
1022 if (nsim_dev->fw_update_status) {
1023 devlink_flash_update_status_notify(devlink,
1024 "Preparing to flash",
1025 params->component, 0, 0);
1028 for (i = 0; i < NSIM_DEV_FLASH_SIZE / NSIM_DEV_FLASH_CHUNK_SIZE; i++) {
1029 if (nsim_dev->fw_update_status)
1030 devlink_flash_update_status_notify(devlink, "Flashing",
1032 i * NSIM_DEV_FLASH_CHUNK_SIZE,
1033 NSIM_DEV_FLASH_SIZE);
1034 msleep(NSIM_DEV_FLASH_CHUNK_TIME_MS);
1037 if (nsim_dev->fw_update_status) {
1038 devlink_flash_update_status_notify(devlink, "Flashing",
1040 NSIM_DEV_FLASH_SIZE,
1041 NSIM_DEV_FLASH_SIZE);
1042 devlink_flash_update_timeout_notify(devlink, "Flash select",
1043 params->component, 81);
1044 devlink_flash_update_status_notify(devlink, "Flashing done",
1045 params->component, 0, 0);
1051 static struct nsim_trap_item *
1052 nsim_dev_trap_item_lookup(struct nsim_dev *nsim_dev, u16 trap_id)
1054 struct nsim_trap_data *nsim_trap_data = nsim_dev->trap_data;
1057 for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) {
1058 if (nsim_traps_arr[i].id == trap_id)
1059 return &nsim_trap_data->trap_items_arr[i];
1065 static int nsim_dev_devlink_trap_init(struct devlink *devlink,
1066 const struct devlink_trap *trap,
1069 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1070 struct nsim_trap_item *nsim_trap_item;
1072 nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id);
1073 if (WARN_ON(!nsim_trap_item))
1076 nsim_trap_item->trap_ctx = trap_ctx;
1077 nsim_trap_item->action = trap->init_action;
1083 nsim_dev_devlink_trap_action_set(struct devlink *devlink,
1084 const struct devlink_trap *trap,
1085 enum devlink_trap_action action,
1086 struct netlink_ext_ack *extack)
1088 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1089 struct nsim_trap_item *nsim_trap_item;
1091 nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id);
1092 if (WARN_ON(!nsim_trap_item))
1095 spin_lock(&nsim_dev->trap_data->trap_lock);
1096 nsim_trap_item->action = action;
1097 spin_unlock(&nsim_dev->trap_data->trap_lock);
1103 nsim_dev_devlink_trap_group_set(struct devlink *devlink,
1104 const struct devlink_trap_group *group,
1105 const struct devlink_trap_policer *policer,
1106 struct netlink_ext_ack *extack)
1108 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1110 if (nsim_dev->fail_trap_group_set)
1117 nsim_dev_devlink_trap_policer_set(struct devlink *devlink,
1118 const struct devlink_trap_policer *policer,
1119 u64 rate, u64 burst,
1120 struct netlink_ext_ack *extack)
1122 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1124 if (nsim_dev->fail_trap_policer_set) {
1125 NL_SET_ERR_MSG_MOD(extack, "User setup the operation to fail for testing purposes");
1133 nsim_dev_devlink_trap_policer_counter_get(struct devlink *devlink,
1134 const struct devlink_trap_policer *policer,
1137 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1140 if (nsim_dev->fail_trap_policer_counter_get)
1143 cnt = &nsim_dev->trap_data->trap_policers_cnt_arr[policer->id - 1];
1144 *p_drops = (*cnt)++;
1149 #define NSIM_LINK_SPEED_MAX 5000 /* Mbps */
1150 #define NSIM_LINK_SPEED_UNIT 125000 /* 1 Mbps given in bytes/sec to avoid
1151 * u64 overflow during conversion from
1155 static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ack *extack)
1160 val = div_u64_rem(*rate, NSIM_LINK_SPEED_UNIT, &rem);
1162 pr_err("%s rate value %lluBps not in link speed units of 1Mbps.\n",
1164 NL_SET_ERR_MSG_MOD(extack, "TX rate value not in link speed units of 1Mbps.");
1168 if (val > NSIM_LINK_SPEED_MAX) {
1169 pr_err("%s rate value %lluMbps exceed link maximum speed 5000Mbps.\n",
1171 NL_SET_ERR_MSG_MOD(extack, "TX rate value exceed link maximum speed 5000Mbps.");
1178 static int nsim_leaf_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
1179 u64 tx_share, struct netlink_ext_ack *extack)
1181 struct nsim_dev_port *nsim_dev_port = priv;
1182 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
1183 int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index);
1186 err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack);
1190 nsim_dev->vfconfigs[vf_id].min_tx_rate = tx_share;
1194 static int nsim_leaf_tx_max_set(struct devlink_rate *devlink_rate, void *priv,
1195 u64 tx_max, struct netlink_ext_ack *extack)
1197 struct nsim_dev_port *nsim_dev_port = priv;
1198 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
1199 int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index);
1202 err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack);
1206 nsim_dev->vfconfigs[vf_id].max_tx_rate = tx_max;
1210 struct nsim_rate_node {
1211 struct dentry *ddir;
1212 struct dentry *rate_parent;
1218 static int nsim_node_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
1219 u64 tx_share, struct netlink_ext_ack *extack)
1221 struct nsim_rate_node *nsim_node = priv;
1224 err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack);
1228 nsim_node->tx_share = tx_share;
1232 static int nsim_node_tx_max_set(struct devlink_rate *devlink_rate, void *priv,
1233 u64 tx_max, struct netlink_ext_ack *extack)
1235 struct nsim_rate_node *nsim_node = priv;
1238 err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack);
1242 nsim_node->tx_max = tx_max;
1246 static int nsim_rate_node_new(struct devlink_rate *node, void **priv,
1247 struct netlink_ext_ack *extack)
1249 struct nsim_dev *nsim_dev = devlink_priv(node->devlink);
1250 struct nsim_rate_node *nsim_node;
1252 if (!nsim_esw_mode_is_switchdev(nsim_dev)) {
1253 NL_SET_ERR_MSG_MOD(extack, "Node creation allowed only in switchdev mode.");
1257 nsim_node = kzalloc(sizeof(*nsim_node), GFP_KERNEL);
1261 nsim_node->ddir = debugfs_create_dir(node->name, nsim_dev->nodes_ddir);
1263 debugfs_create_u16("tx_share", 0400, nsim_node->ddir, &nsim_node->tx_share);
1264 debugfs_create_u16("tx_max", 0400, nsim_node->ddir, &nsim_node->tx_max);
1265 nsim_node->rate_parent = debugfs_create_file("rate_parent", 0400,
1267 &nsim_node->parent_name,
1268 &nsim_dev_rate_parent_fops);
1274 static int nsim_rate_node_del(struct devlink_rate *node, void *priv,
1275 struct netlink_ext_ack *extack)
1277 struct nsim_rate_node *nsim_node = priv;
1279 debugfs_remove(nsim_node->rate_parent);
1280 debugfs_remove_recursive(nsim_node->ddir);
1285 static int nsim_rate_leaf_parent_set(struct devlink_rate *child,
1286 struct devlink_rate *parent,
1287 void *priv_child, void *priv_parent,
1288 struct netlink_ext_ack *extack)
1290 struct nsim_dev_port *nsim_dev_port = priv_child;
1293 nsim_dev_port->parent_name = parent->name;
1295 nsim_dev_port->parent_name = NULL;
1299 static int nsim_rate_node_parent_set(struct devlink_rate *child,
1300 struct devlink_rate *parent,
1301 void *priv_child, void *priv_parent,
1302 struct netlink_ext_ack *extack)
1304 struct nsim_rate_node *nsim_node = priv_child;
1307 nsim_node->parent_name = parent->name;
1309 nsim_node->parent_name = NULL;
1314 nsim_dev_devlink_trap_drop_counter_get(struct devlink *devlink,
1315 const struct devlink_trap *trap,
1318 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1321 if (nsim_dev->fail_trap_drop_counter_get)
1324 cnt = &nsim_dev->trap_data->trap_pkt_cnt;
1325 *p_drops = (*cnt)++;
1330 static const struct devlink_ops nsim_dev_devlink_ops = {
1331 .eswitch_mode_set = nsim_devlink_eswitch_mode_set,
1332 .eswitch_mode_get = nsim_devlink_eswitch_mode_get,
1333 .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK,
1334 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
1335 .reload_down = nsim_dev_reload_down,
1336 .reload_up = nsim_dev_reload_up,
1337 .info_get = nsim_dev_info_get,
1338 .flash_update = nsim_dev_flash_update,
1339 .trap_init = nsim_dev_devlink_trap_init,
1340 .trap_action_set = nsim_dev_devlink_trap_action_set,
1341 .trap_group_set = nsim_dev_devlink_trap_group_set,
1342 .trap_policer_set = nsim_dev_devlink_trap_policer_set,
1343 .trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get,
1344 .rate_leaf_tx_share_set = nsim_leaf_tx_share_set,
1345 .rate_leaf_tx_max_set = nsim_leaf_tx_max_set,
1346 .rate_node_tx_share_set = nsim_node_tx_share_set,
1347 .rate_node_tx_max_set = nsim_node_tx_max_set,
1348 .rate_node_new = nsim_rate_node_new,
1349 .rate_node_del = nsim_rate_node_del,
1350 .rate_leaf_parent_set = nsim_rate_leaf_parent_set,
1351 .rate_node_parent_set = nsim_rate_node_parent_set,
1352 .trap_drop_counter_get = nsim_dev_devlink_trap_drop_counter_get,
1355 #define NSIM_DEV_MAX_MACS_DEFAULT 32
1356 #define NSIM_DEV_TEST1_DEFAULT true
1358 static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
1359 unsigned int port_index)
1361 struct devlink_port_attrs attrs = {};
1362 struct nsim_dev_port *nsim_dev_port;
1363 struct devlink_port *devlink_port;
1366 if (type == NSIM_DEV_PORT_TYPE_VF && !nsim_dev_get_vfs(nsim_dev))
1369 nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL);
1372 nsim_dev_port->port_index = nsim_dev_port_index(type, port_index);
1373 nsim_dev_port->port_type = type;
1375 devlink_port = &nsim_dev_port->devlink_port;
1376 if (nsim_dev_port_is_pf(nsim_dev_port)) {
1377 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
1378 attrs.phys.port_number = port_index + 1;
1380 attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
1381 attrs.pci_vf.pf = 0;
1382 attrs.pci_vf.vf = port_index;
1384 memcpy(attrs.switch_id.id, nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
1385 attrs.switch_id.id_len = nsim_dev->switch_id.id_len;
1386 devlink_port_attrs_set(devlink_port, &attrs);
1387 err = devl_port_register(priv_to_devlink(nsim_dev), devlink_port,
1388 nsim_dev_port->port_index);
1392 err = nsim_dev_port_debugfs_init(nsim_dev, nsim_dev_port);
1394 goto err_dl_port_unregister;
1396 nsim_dev_port->ns = nsim_create(nsim_dev, nsim_dev_port);
1397 if (IS_ERR(nsim_dev_port->ns)) {
1398 err = PTR_ERR(nsim_dev_port->ns);
1399 goto err_port_debugfs_exit;
1402 if (nsim_dev_port_is_vf(nsim_dev_port)) {
1403 err = devl_rate_leaf_create(&nsim_dev_port->devlink_port,
1406 goto err_nsim_destroy;
1409 devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev);
1410 list_add(&nsim_dev_port->list, &nsim_dev->port_list);
1415 nsim_destroy(nsim_dev_port->ns);
1416 err_port_debugfs_exit:
1417 nsim_dev_port_debugfs_exit(nsim_dev_port);
1418 err_dl_port_unregister:
1419 devl_port_unregister(devlink_port);
1421 kfree(nsim_dev_port);
1425 static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port)
1427 struct devlink_port *devlink_port = &nsim_dev_port->devlink_port;
1429 list_del(&nsim_dev_port->list);
1430 if (nsim_dev_port_is_vf(nsim_dev_port))
1431 devl_rate_leaf_destroy(&nsim_dev_port->devlink_port);
1432 devlink_port_type_clear(devlink_port);
1433 nsim_destroy(nsim_dev_port->ns);
1434 nsim_dev_port_debugfs_exit(nsim_dev_port);
1435 devl_port_unregister(devlink_port);
1436 kfree(nsim_dev_port);
1439 static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
1441 struct nsim_dev_port *nsim_dev_port, *tmp;
1443 list_for_each_entry_safe(nsim_dev_port, tmp,
1444 &nsim_dev->port_list, list)
1445 __nsim_dev_port_del(nsim_dev_port);
1448 static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
1449 unsigned int port_count)
1453 for (i = 0; i < port_count; i++) {
1454 err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_PF, i);
1456 goto err_port_del_all;
1461 nsim_dev_port_del_all(nsim_dev);
1465 static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
1466 struct netlink_ext_ack *extack)
1468 struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
1469 struct devlink *devlink;
1472 devlink = priv_to_devlink(nsim_dev);
1473 nsim_dev = devlink_priv(devlink);
1474 INIT_LIST_HEAD(&nsim_dev->port_list);
1475 nsim_dev->fw_update_status = true;
1476 nsim_dev->fw_update_overwrite_mask = 0;
1478 nsim_devlink_param_load_driverinit_values(devlink);
1480 err = nsim_dev_dummy_region_init(nsim_dev, devlink);
1484 err = nsim_dev_traps_init(devlink);
1486 goto err_dummy_region_exit;
1488 nsim_dev->fib_data = nsim_fib_create(devlink, extack);
1489 if (IS_ERR(nsim_dev->fib_data)) {
1490 err = PTR_ERR(nsim_dev->fib_data);
1491 goto err_traps_exit;
1494 err = nsim_dev_health_init(nsim_dev, devlink);
1496 goto err_fib_destroy;
1498 err = nsim_dev_psample_init(nsim_dev);
1500 goto err_health_exit;
1502 err = nsim_dev_hwstats_init(nsim_dev);
1504 goto err_psample_exit;
1506 err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
1508 goto err_hwstats_exit;
1510 nsim_dev->take_snapshot = debugfs_create_file("take_snapshot",
1514 &nsim_dev_take_snapshot_fops);
1518 nsim_dev_hwstats_exit(nsim_dev);
1520 nsim_dev_psample_exit(nsim_dev);
1522 nsim_dev_health_exit(nsim_dev);
1524 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1526 nsim_dev_traps_exit(devlink);
1527 err_dummy_region_exit:
1528 nsim_dev_dummy_region_exit(nsim_dev);
1532 int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
1534 struct nsim_dev *nsim_dev;
1535 struct devlink *devlink;
1538 devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev),
1539 nsim_bus_dev->initial_net, &nsim_bus_dev->dev);
1543 nsim_dev = devlink_priv(devlink);
1544 nsim_dev->nsim_bus_dev = nsim_bus_dev;
1545 nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
1546 get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
1547 INIT_LIST_HEAD(&nsim_dev->port_list);
1548 nsim_dev->fw_update_status = true;
1549 nsim_dev->fw_update_overwrite_mask = 0;
1550 nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT;
1551 nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT;
1552 spin_lock_init(&nsim_dev->fa_cookie_lock);
1554 dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev);
1556 nsim_dev->vfconfigs = kcalloc(nsim_bus_dev->max_vfs,
1557 sizeof(struct nsim_vf_config),
1558 GFP_KERNEL | __GFP_NOWARN);
1559 if (!nsim_dev->vfconfigs) {
1561 goto err_devlink_unlock;
1564 err = nsim_dev_resources_register(devlink);
1568 err = devlink_params_register(devlink, nsim_devlink_params,
1569 ARRAY_SIZE(nsim_devlink_params));
1571 goto err_dl_unregister;
1572 nsim_devlink_set_params_init_values(nsim_dev, devlink);
1574 err = nsim_dev_dummy_region_init(nsim_dev, devlink);
1576 goto err_params_unregister;
1578 err = nsim_dev_traps_init(devlink);
1580 goto err_dummy_region_exit;
1582 err = nsim_dev_debugfs_init(nsim_dev);
1584 goto err_traps_exit;
1586 nsim_dev->fib_data = nsim_fib_create(devlink, NULL);
1587 if (IS_ERR(nsim_dev->fib_data)) {
1588 err = PTR_ERR(nsim_dev->fib_data);
1589 goto err_debugfs_exit;
1592 err = nsim_dev_health_init(nsim_dev, devlink);
1594 goto err_fib_destroy;
1596 err = nsim_bpf_dev_init(nsim_dev);
1598 goto err_health_exit;
1600 err = nsim_dev_psample_init(nsim_dev);
1602 goto err_bpf_dev_exit;
1604 err = nsim_dev_hwstats_init(nsim_dev);
1606 goto err_psample_exit;
1608 err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
1610 goto err_hwstats_exit;
1612 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
1613 devlink_set_features(devlink, DEVLINK_F_RELOAD);
1614 devl_unlock(devlink);
1615 devlink_register(devlink);
1619 nsim_dev_hwstats_exit(nsim_dev);
1621 nsim_dev_psample_exit(nsim_dev);
1623 nsim_bpf_dev_exit(nsim_dev);
1625 nsim_dev_health_exit(nsim_dev);
1627 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1629 nsim_dev_debugfs_exit(nsim_dev);
1631 nsim_dev_traps_exit(devlink);
1632 err_dummy_region_exit:
1633 nsim_dev_dummy_region_exit(nsim_dev);
1634 err_params_unregister:
1635 devlink_params_unregister(devlink, nsim_devlink_params,
1636 ARRAY_SIZE(nsim_devlink_params));
1638 devl_resources_unregister(devlink);
1640 kfree(nsim_dev->vfconfigs);
1642 devl_unlock(devlink);
1643 devlink_free(devlink);
1644 dev_set_drvdata(&nsim_bus_dev->dev, NULL);
1648 static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev)
1650 struct devlink *devlink = priv_to_devlink(nsim_dev);
1652 if (devlink_is_reload_failed(devlink))
1654 debugfs_remove(nsim_dev->take_snapshot);
1656 if (nsim_dev_get_vfs(nsim_dev)) {
1657 nsim_bus_dev_set_vfs(nsim_dev->nsim_bus_dev, 0);
1658 if (nsim_esw_mode_is_switchdev(nsim_dev))
1659 nsim_esw_legacy_enable(nsim_dev, NULL);
1662 nsim_dev_port_del_all(nsim_dev);
1663 nsim_dev_hwstats_exit(nsim_dev);
1664 nsim_dev_psample_exit(nsim_dev);
1665 nsim_dev_health_exit(nsim_dev);
1666 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1667 nsim_dev_traps_exit(devlink);
1668 nsim_dev_dummy_region_exit(nsim_dev);
1671 void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev)
1673 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1674 struct devlink *devlink = priv_to_devlink(nsim_dev);
1676 devlink_unregister(devlink);
1678 nsim_dev_reload_destroy(nsim_dev);
1680 nsim_bpf_dev_exit(nsim_dev);
1681 nsim_dev_debugfs_exit(nsim_dev);
1682 devlink_params_unregister(devlink, nsim_devlink_params,
1683 ARRAY_SIZE(nsim_devlink_params));
1684 devl_resources_unregister(devlink);
1685 kfree(nsim_dev->vfconfigs);
1686 kfree(nsim_dev->fa_cookie);
1687 devl_unlock(devlink);
1688 devlink_free(devlink);
1689 dev_set_drvdata(&nsim_bus_dev->dev, NULL);
1692 static struct nsim_dev_port *
1693 __nsim_dev_port_lookup(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
1694 unsigned int port_index)
1696 struct nsim_dev_port *nsim_dev_port;
1698 port_index = nsim_dev_port_index(type, port_index);
1699 list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list)
1700 if (nsim_dev_port->port_index == port_index)
1701 return nsim_dev_port;
1705 int nsim_drv_port_add(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type,
1706 unsigned int port_index)
1708 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1711 devl_lock(priv_to_devlink(nsim_dev));
1712 if (__nsim_dev_port_lookup(nsim_dev, type, port_index))
1715 err = __nsim_dev_port_add(nsim_dev, type, port_index);
1716 devl_unlock(priv_to_devlink(nsim_dev));
1720 int nsim_drv_port_del(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type,
1721 unsigned int port_index)
1723 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1724 struct nsim_dev_port *nsim_dev_port;
1727 devl_lock(priv_to_devlink(nsim_dev));
1728 nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, type, port_index);
1732 __nsim_dev_port_del(nsim_dev_port);
1733 devl_unlock(priv_to_devlink(nsim_dev));
1737 int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev,
1738 unsigned int num_vfs)
1740 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1741 struct devlink *devlink = priv_to_devlink(nsim_dev);
1745 if (nsim_bus_dev->num_vfs == num_vfs)
1747 if (nsim_bus_dev->num_vfs && num_vfs) {
1751 if (nsim_bus_dev->max_vfs < num_vfs) {
1756 nsim_bus_dev_set_vfs(nsim_bus_dev, num_vfs);
1757 if (nsim_esw_mode_is_switchdev(nsim_dev)) {
1759 ret = nsim_esw_switchdev_enable(nsim_dev, NULL);
1761 nsim_bus_dev_set_vfs(nsim_bus_dev, 0);
1765 nsim_esw_legacy_enable(nsim_dev, NULL);
1770 devl_unlock(devlink);
1775 int nsim_dev_init(void)
1777 nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL);
1778 return PTR_ERR_OR_ZERO(nsim_dev_ddir);
1781 void nsim_dev_exit(void)
1783 debugfs_remove_recursive(nsim_dev_ddir);