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 return PTR_ERR(nsim_dev->ports_ddir);
314 debugfs_create_bool("fw_update_status", 0600, nsim_dev->ddir,
315 &nsim_dev->fw_update_status);
316 debugfs_create_u32("fw_update_overwrite_mask", 0600, nsim_dev->ddir,
317 &nsim_dev->fw_update_overwrite_mask);
318 debugfs_create_u32("max_macs", 0600, nsim_dev->ddir,
319 &nsim_dev->max_macs);
320 debugfs_create_bool("test1", 0600, nsim_dev->ddir,
322 nsim_dev->take_snapshot = debugfs_create_file("take_snapshot",
326 &nsim_dev_take_snapshot_fops);
327 debugfs_create_bool("dont_allow_reload", 0600, nsim_dev->ddir,
328 &nsim_dev->dont_allow_reload);
329 debugfs_create_bool("fail_reload", 0600, nsim_dev->ddir,
330 &nsim_dev->fail_reload);
331 debugfs_create_file("trap_flow_action_cookie", 0600, nsim_dev->ddir,
332 nsim_dev, &nsim_dev_trap_fa_cookie_fops);
333 debugfs_create_bool("fail_trap_group_set", 0600,
335 &nsim_dev->fail_trap_group_set);
336 debugfs_create_bool("fail_trap_policer_set", 0600,
338 &nsim_dev->fail_trap_policer_set);
339 debugfs_create_bool("fail_trap_policer_counter_get", 0600,
341 &nsim_dev->fail_trap_policer_counter_get);
342 /* caution, dev_max_vfs write takes devlink lock */
343 debugfs_create_file("max_vfs", 0600, nsim_dev->ddir,
344 nsim_dev, &nsim_dev_max_vfs_fops);
346 nsim_dev->nodes_ddir = debugfs_create_dir("rate_nodes", nsim_dev->ddir);
347 if (IS_ERR(nsim_dev->nodes_ddir)) {
348 err = PTR_ERR(nsim_dev->nodes_ddir);
351 debugfs_create_bool("fail_trap_drop_counter_get", 0600,
353 &nsim_dev->fail_trap_drop_counter_get);
354 nsim_udp_tunnels_debugfs_create(nsim_dev);
358 debugfs_remove_recursive(nsim_dev->ports_ddir);
359 debugfs_remove_recursive(nsim_dev->ddir);
363 static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev)
365 debugfs_remove_recursive(nsim_dev->nodes_ddir);
366 debugfs_remove_recursive(nsim_dev->ports_ddir);
367 debugfs_remove_recursive(nsim_dev->ddir);
370 static ssize_t nsim_dev_rate_parent_read(struct file *file,
372 size_t count, loff_t *ppos)
374 char **name_ptr = file->private_data;
380 len = strlen(*name_ptr);
381 return simple_read_from_buffer(data, count, ppos, *name_ptr, len);
384 static const struct file_operations nsim_dev_rate_parent_fops = {
386 .read = nsim_dev_rate_parent_read,
387 .llseek = generic_file_llseek,
388 .owner = THIS_MODULE,
391 static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev,
392 struct nsim_dev_port *nsim_dev_port)
394 struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
395 unsigned int port_index = nsim_dev_port->port_index;
396 char port_ddir_name[16];
397 char dev_link_name[32];
399 sprintf(port_ddir_name, "%u", port_index);
400 nsim_dev_port->ddir = debugfs_create_dir(port_ddir_name,
401 nsim_dev->ports_ddir);
402 if (IS_ERR(nsim_dev_port->ddir))
403 return PTR_ERR(nsim_dev_port->ddir);
405 sprintf(dev_link_name, "../../../" DRV_NAME "%u", nsim_bus_dev->dev.id);
406 if (nsim_dev_port_is_vf(nsim_dev_port)) {
407 unsigned int vf_id = nsim_dev_port_index_to_vf_index(port_index);
409 debugfs_create_u16("tx_share", 0400, nsim_dev_port->ddir,
410 &nsim_dev->vfconfigs[vf_id].min_tx_rate);
411 debugfs_create_u16("tx_max", 0400, nsim_dev_port->ddir,
412 &nsim_dev->vfconfigs[vf_id].max_tx_rate);
413 nsim_dev_port->rate_parent = debugfs_create_file("rate_parent",
416 &nsim_dev_port->parent_name,
417 &nsim_dev_rate_parent_fops);
419 debugfs_create_symlink("dev", nsim_dev_port->ddir, dev_link_name);
424 static void nsim_dev_port_debugfs_exit(struct nsim_dev_port *nsim_dev_port)
426 debugfs_remove_recursive(nsim_dev_port->ddir);
429 static int nsim_dev_resources_register(struct devlink *devlink)
431 struct devlink_resource_size_params params = {
433 .size_granularity = 1,
434 .unit = DEVLINK_RESOURCE_UNIT_ENTRY
438 /* Resources for IPv4 */
439 err = devlink_resource_register(devlink, "IPv4", (u64)-1,
441 DEVLINK_RESOURCE_ID_PARENT_TOP,
444 pr_err("Failed to register IPv4 top resource\n");
448 err = devlink_resource_register(devlink, "fib", (u64)-1,
449 NSIM_RESOURCE_IPV4_FIB,
450 NSIM_RESOURCE_IPV4, ¶ms);
452 pr_err("Failed to register IPv4 FIB resource\n");
456 err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
457 NSIM_RESOURCE_IPV4_FIB_RULES,
458 NSIM_RESOURCE_IPV4, ¶ms);
460 pr_err("Failed to register IPv4 FIB rules resource\n");
464 /* Resources for IPv6 */
465 err = devlink_resource_register(devlink, "IPv6", (u64)-1,
467 DEVLINK_RESOURCE_ID_PARENT_TOP,
470 pr_err("Failed to register IPv6 top resource\n");
474 err = devlink_resource_register(devlink, "fib", (u64)-1,
475 NSIM_RESOURCE_IPV6_FIB,
476 NSIM_RESOURCE_IPV6, ¶ms);
478 pr_err("Failed to register IPv6 FIB resource\n");
482 err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
483 NSIM_RESOURCE_IPV6_FIB_RULES,
484 NSIM_RESOURCE_IPV6, ¶ms);
486 pr_err("Failed to register IPv6 FIB rules resource\n");
490 /* Resources for nexthops */
491 err = devlink_resource_register(devlink, "nexthops", (u64)-1,
492 NSIM_RESOURCE_NEXTHOPS,
493 DEVLINK_RESOURCE_ID_PARENT_TOP,
500 enum nsim_devlink_param_id {
501 NSIM_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
502 NSIM_DEVLINK_PARAM_ID_TEST1,
505 static const struct devlink_param nsim_devlink_params[] = {
506 DEVLINK_PARAM_GENERIC(MAX_MACS,
507 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
509 DEVLINK_PARAM_DRIVER(NSIM_DEVLINK_PARAM_ID_TEST1,
510 "test1", DEVLINK_PARAM_TYPE_BOOL,
511 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
515 static void nsim_devlink_set_params_init_values(struct nsim_dev *nsim_dev,
516 struct devlink *devlink)
518 union devlink_param_value value;
520 value.vu32 = nsim_dev->max_macs;
521 devlink_param_driverinit_value_set(devlink,
522 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
524 value.vbool = nsim_dev->test1;
525 devlink_param_driverinit_value_set(devlink,
526 NSIM_DEVLINK_PARAM_ID_TEST1,
530 static void nsim_devlink_param_load_driverinit_values(struct devlink *devlink)
532 struct nsim_dev *nsim_dev = devlink_priv(devlink);
533 union devlink_param_value saved_value;
536 err = devlink_param_driverinit_value_get(devlink,
537 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
540 nsim_dev->max_macs = saved_value.vu32;
541 err = devlink_param_driverinit_value_get(devlink,
542 NSIM_DEVLINK_PARAM_ID_TEST1,
545 nsim_dev->test1 = saved_value.vbool;
548 #define NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX 16
550 static const struct devlink_region_ops dummy_region_ops = {
552 .destructor = &kfree,
553 .snapshot = nsim_dev_take_snapshot,
556 static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev,
557 struct devlink *devlink)
559 nsim_dev->dummy_region =
560 devlink_region_create(devlink, &dummy_region_ops,
561 NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX,
562 NSIM_DEV_DUMMY_REGION_SIZE);
563 return PTR_ERR_OR_ZERO(nsim_dev->dummy_region);
566 static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev)
568 devlink_region_destroy(nsim_dev->dummy_region);
572 __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
573 unsigned int port_index);
574 static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port);
576 static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev,
577 struct netlink_ext_ack *extack)
579 struct devlink *devlink = priv_to_devlink(nsim_dev);
580 struct nsim_dev_port *nsim_dev_port, *tmp;
582 devl_rate_nodes_destroy(devlink);
583 list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list)
584 if (nsim_dev_port_is_vf(nsim_dev_port))
585 __nsim_dev_port_del(nsim_dev_port);
586 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
590 static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev,
591 struct netlink_ext_ack *extack)
593 struct nsim_dev_port *nsim_dev_port, *tmp;
596 for (i = 0; i < nsim_dev_get_vfs(nsim_dev); i++) {
597 err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_VF, i);
599 NL_SET_ERR_MSG_MOD(extack, "Failed to initialize VFs' netdevsim ports");
600 pr_err("Failed to initialize VF id=%d. %d.\n", i, err);
601 goto err_port_add_vfs;
604 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
608 list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list)
609 if (nsim_dev_port_is_vf(nsim_dev_port))
610 __nsim_dev_port_del(nsim_dev_port);
614 static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
615 struct netlink_ext_ack *extack)
617 struct nsim_dev *nsim_dev = devlink_priv(devlink);
619 if (mode == nsim_dev->esw_mode)
622 if (mode == DEVLINK_ESWITCH_MODE_LEGACY)
623 return nsim_esw_legacy_enable(nsim_dev, extack);
624 if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
625 return nsim_esw_switchdev_enable(nsim_dev, extack);
630 static int nsim_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
632 struct nsim_dev *nsim_dev = devlink_priv(devlink);
634 *mode = nsim_dev->esw_mode;
638 struct nsim_trap_item {
640 enum devlink_trap_action action;
643 struct nsim_trap_data {
644 struct delayed_work trap_report_dw;
645 struct nsim_trap_item *trap_items_arr;
646 u64 *trap_policers_cnt_arr;
648 struct nsim_dev *nsim_dev;
649 spinlock_t trap_lock; /* Protects trap_items_arr */
652 /* All driver-specific traps must be documented in
653 * Documentation/networking/devlink/netdevsim.rst
656 NSIM_TRAP_ID_BASE = DEVLINK_TRAP_GENERIC_ID_MAX,
657 NSIM_TRAP_ID_FID_MISS,
660 #define NSIM_TRAP_NAME_FID_MISS "fid_miss"
662 #define NSIM_TRAP_METADATA DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT
664 #define NSIM_TRAP_DROP(_id, _group_id) \
665 DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
666 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
668 #define NSIM_TRAP_DROP_EXT(_id, _group_id, _metadata) \
669 DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
670 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
671 NSIM_TRAP_METADATA | (_metadata))
672 #define NSIM_TRAP_EXCEPTION(_id, _group_id) \
673 DEVLINK_TRAP_GENERIC(EXCEPTION, TRAP, _id, \
674 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
676 #define NSIM_TRAP_CONTROL(_id, _group_id, _action) \
677 DEVLINK_TRAP_GENERIC(CONTROL, _action, _id, \
678 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
680 #define NSIM_TRAP_DRIVER_EXCEPTION(_id, _group_id) \
681 DEVLINK_TRAP_DRIVER(EXCEPTION, TRAP, NSIM_TRAP_ID_##_id, \
682 NSIM_TRAP_NAME_##_id, \
683 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \
686 #define NSIM_DEV_TRAP_POLICER_MIN_RATE 1
687 #define NSIM_DEV_TRAP_POLICER_MAX_RATE 8000
688 #define NSIM_DEV_TRAP_POLICER_MIN_BURST 8
689 #define NSIM_DEV_TRAP_POLICER_MAX_BURST 65536
691 #define NSIM_TRAP_POLICER(_id, _rate, _burst) \
692 DEVLINK_TRAP_POLICER(_id, _rate, _burst, \
693 NSIM_DEV_TRAP_POLICER_MAX_RATE, \
694 NSIM_DEV_TRAP_POLICER_MIN_RATE, \
695 NSIM_DEV_TRAP_POLICER_MAX_BURST, \
696 NSIM_DEV_TRAP_POLICER_MIN_BURST)
698 static const struct devlink_trap_policer nsim_trap_policers_arr[] = {
699 NSIM_TRAP_POLICER(1, 1000, 128),
700 NSIM_TRAP_POLICER(2, 2000, 256),
701 NSIM_TRAP_POLICER(3, 3000, 512),
704 static const struct devlink_trap_group nsim_trap_groups_arr[] = {
705 DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS, 0),
706 DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS, 1),
707 DEVLINK_TRAP_GROUP_GENERIC(L3_EXCEPTIONS, 1),
708 DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS, 2),
709 DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS, 3),
710 DEVLINK_TRAP_GROUP_GENERIC(MC_SNOOPING, 3),
713 static const struct devlink_trap nsim_traps_arr[] = {
714 NSIM_TRAP_DROP(SMAC_MC, L2_DROPS),
715 NSIM_TRAP_DROP(VLAN_TAG_MISMATCH, L2_DROPS),
716 NSIM_TRAP_DROP(INGRESS_VLAN_FILTER, L2_DROPS),
717 NSIM_TRAP_DROP(INGRESS_STP_FILTER, L2_DROPS),
718 NSIM_TRAP_DROP(EMPTY_TX_LIST, L2_DROPS),
719 NSIM_TRAP_DROP(PORT_LOOPBACK_FILTER, L2_DROPS),
720 NSIM_TRAP_DRIVER_EXCEPTION(FID_MISS, L2_DROPS),
721 NSIM_TRAP_DROP(BLACKHOLE_ROUTE, L3_DROPS),
722 NSIM_TRAP_EXCEPTION(TTL_ERROR, L3_EXCEPTIONS),
723 NSIM_TRAP_DROP(TAIL_DROP, BUFFER_DROPS),
724 NSIM_TRAP_DROP_EXT(INGRESS_FLOW_ACTION_DROP, ACL_DROPS,
725 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE),
726 NSIM_TRAP_DROP_EXT(EGRESS_FLOW_ACTION_DROP, ACL_DROPS,
727 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE),
728 NSIM_TRAP_CONTROL(IGMP_QUERY, MC_SNOOPING, MIRROR),
729 NSIM_TRAP_CONTROL(IGMP_V1_REPORT, MC_SNOOPING, TRAP),
732 #define NSIM_TRAP_L4_DATA_LEN 100
734 static struct sk_buff *nsim_dev_trap_skb_build(void)
736 int tot_len, data_len = NSIM_TRAP_L4_DATA_LEN;
742 skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC);
745 tot_len = sizeof(struct iphdr) + sizeof(struct udphdr) + data_len;
747 skb_reset_mac_header(skb);
748 eth = skb_put(skb, sizeof(struct ethhdr));
749 eth_random_addr(eth->h_dest);
750 eth_random_addr(eth->h_source);
751 eth->h_proto = htons(ETH_P_IP);
752 skb->protocol = htons(ETH_P_IP);
754 skb_set_network_header(skb, skb->len);
755 iph = skb_put(skb, sizeof(struct iphdr));
756 iph->protocol = IPPROTO_UDP;
757 iph->saddr = in_aton("192.0.2.1");
758 iph->daddr = in_aton("198.51.100.1");
762 iph->tot_len = htons(tot_len);
765 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
767 skb_set_transport_header(skb, skb->len);
768 udph = skb_put_zero(skb, sizeof(struct udphdr) + data_len);
769 get_random_bytes(&udph->source, sizeof(u16));
770 get_random_bytes(&udph->dest, sizeof(u16));
771 udph->len = htons(sizeof(struct udphdr) + data_len);
776 static void nsim_dev_trap_report(struct nsim_dev_port *nsim_dev_port)
778 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
779 struct devlink *devlink = priv_to_devlink(nsim_dev);
780 struct nsim_trap_data *nsim_trap_data;
783 nsim_trap_data = nsim_dev->trap_data;
785 spin_lock(&nsim_trap_data->trap_lock);
786 for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) {
787 struct flow_action_cookie *fa_cookie = NULL;
788 struct nsim_trap_item *nsim_trap_item;
792 has_fa_cookie = nsim_traps_arr[i].metadata_cap &
793 DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE;
795 nsim_trap_item = &nsim_trap_data->trap_items_arr[i];
796 if (nsim_trap_item->action == DEVLINK_TRAP_ACTION_DROP)
799 skb = nsim_dev_trap_skb_build();
802 skb->dev = nsim_dev_port->ns->netdev;
804 /* Trapped packets are usually passed to devlink in softIRQ,
805 * but in this case they are generated in a workqueue. Disable
806 * softIRQs to prevent lockdep from complaining about
807 * "incosistent lock state".
810 spin_lock_bh(&nsim_dev->fa_cookie_lock);
811 fa_cookie = has_fa_cookie ? nsim_dev->fa_cookie : NULL;
812 devlink_trap_report(devlink, skb, nsim_trap_item->trap_ctx,
813 &nsim_dev_port->devlink_port, fa_cookie);
814 spin_unlock_bh(&nsim_dev->fa_cookie_lock);
817 spin_unlock(&nsim_trap_data->trap_lock);
820 #define NSIM_TRAP_REPORT_INTERVAL_MS 100
822 static void nsim_dev_trap_report_work(struct work_struct *work)
824 struct nsim_trap_data *nsim_trap_data;
825 struct nsim_dev_port *nsim_dev_port;
826 struct nsim_dev *nsim_dev;
828 nsim_trap_data = container_of(work, struct nsim_trap_data,
829 trap_report_dw.work);
830 nsim_dev = nsim_trap_data->nsim_dev;
832 /* For each running port and enabled packet trap, generate a UDP
833 * packet with a random 5-tuple and report it.
835 devl_lock(priv_to_devlink(nsim_dev));
836 list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) {
837 if (!netif_running(nsim_dev_port->ns->netdev))
840 nsim_dev_trap_report(nsim_dev_port);
842 devl_unlock(priv_to_devlink(nsim_dev));
844 schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw,
845 msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS));
848 static int nsim_dev_traps_init(struct devlink *devlink)
850 size_t policers_count = ARRAY_SIZE(nsim_trap_policers_arr);
851 struct nsim_dev *nsim_dev = devlink_priv(devlink);
852 struct nsim_trap_data *nsim_trap_data;
855 nsim_trap_data = kzalloc(sizeof(*nsim_trap_data), GFP_KERNEL);
859 nsim_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(nsim_traps_arr),
860 sizeof(struct nsim_trap_item),
862 if (!nsim_trap_data->trap_items_arr) {
864 goto err_trap_data_free;
867 nsim_trap_data->trap_policers_cnt_arr = kcalloc(policers_count,
870 if (!nsim_trap_data->trap_policers_cnt_arr) {
872 goto err_trap_items_free;
875 /* The lock is used to protect the action state of the registered
876 * traps. The value is written by user and read in delayed work when
877 * iterating over all the traps.
879 spin_lock_init(&nsim_trap_data->trap_lock);
880 nsim_trap_data->nsim_dev = nsim_dev;
881 nsim_dev->trap_data = nsim_trap_data;
883 err = devlink_trap_policers_register(devlink, nsim_trap_policers_arr,
886 goto err_trap_policers_cnt_free;
888 err = devlink_trap_groups_register(devlink, nsim_trap_groups_arr,
889 ARRAY_SIZE(nsim_trap_groups_arr));
891 goto err_trap_policers_unregister;
893 err = devlink_traps_register(devlink, nsim_traps_arr,
894 ARRAY_SIZE(nsim_traps_arr), NULL);
896 goto err_trap_groups_unregister;
898 INIT_DELAYED_WORK(&nsim_dev->trap_data->trap_report_dw,
899 nsim_dev_trap_report_work);
900 schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw,
901 msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS));
905 err_trap_groups_unregister:
906 devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr,
907 ARRAY_SIZE(nsim_trap_groups_arr));
908 err_trap_policers_unregister:
909 devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr,
910 ARRAY_SIZE(nsim_trap_policers_arr));
911 err_trap_policers_cnt_free:
912 kfree(nsim_trap_data->trap_policers_cnt_arr);
914 kfree(nsim_trap_data->trap_items_arr);
916 kfree(nsim_trap_data);
920 static void nsim_dev_traps_exit(struct devlink *devlink)
922 struct nsim_dev *nsim_dev = devlink_priv(devlink);
924 /* caution, trap work takes devlink lock */
925 cancel_delayed_work_sync(&nsim_dev->trap_data->trap_report_dw);
926 devlink_traps_unregister(devlink, nsim_traps_arr,
927 ARRAY_SIZE(nsim_traps_arr));
928 devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr,
929 ARRAY_SIZE(nsim_trap_groups_arr));
930 devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr,
931 ARRAY_SIZE(nsim_trap_policers_arr));
932 kfree(nsim_dev->trap_data->trap_policers_cnt_arr);
933 kfree(nsim_dev->trap_data->trap_items_arr);
934 kfree(nsim_dev->trap_data);
937 static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
938 struct netlink_ext_ack *extack);
939 static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev);
941 static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change,
942 enum devlink_reload_action action, enum devlink_reload_limit limit,
943 struct netlink_ext_ack *extack)
945 struct nsim_dev *nsim_dev = devlink_priv(devlink);
946 struct nsim_bus_dev *nsim_bus_dev;
948 nsim_bus_dev = nsim_dev->nsim_bus_dev;
949 if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock))
952 if (nsim_dev->dont_allow_reload) {
953 /* For testing purposes, user set debugfs dont_allow_reload
954 * value to true. So forbid it.
956 NL_SET_ERR_MSG_MOD(extack, "User forbid the reload for testing purposes");
957 mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
960 nsim_bus_dev->in_reload = true;
962 nsim_dev_reload_destroy(nsim_dev);
963 mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
967 static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_action action,
968 enum devlink_reload_limit limit, u32 *actions_performed,
969 struct netlink_ext_ack *extack)
971 struct nsim_dev *nsim_dev = devlink_priv(devlink);
972 struct nsim_bus_dev *nsim_bus_dev;
975 nsim_bus_dev = nsim_dev->nsim_bus_dev;
976 mutex_lock(&nsim_bus_dev->nsim_bus_reload_lock);
977 nsim_bus_dev->in_reload = false;
979 if (nsim_dev->fail_reload) {
980 /* For testing purposes, user set debugfs fail_reload
981 * value to true. Fail right away.
983 NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes");
984 mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
988 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
989 ret = nsim_dev_reload_create(nsim_dev, extack);
990 mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
994 static int nsim_dev_info_get(struct devlink *devlink,
995 struct devlink_info_req *req,
996 struct netlink_ext_ack *extack)
998 return devlink_info_driver_name_put(req, DRV_NAME);
1001 #define NSIM_DEV_FLASH_SIZE 500000
1002 #define NSIM_DEV_FLASH_CHUNK_SIZE 1000
1003 #define NSIM_DEV_FLASH_CHUNK_TIME_MS 10
1005 static int nsim_dev_flash_update(struct devlink *devlink,
1006 struct devlink_flash_update_params *params,
1007 struct netlink_ext_ack *extack)
1009 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1012 if ((params->overwrite_mask & ~nsim_dev->fw_update_overwrite_mask) != 0)
1015 if (nsim_dev->fw_update_status) {
1016 devlink_flash_update_status_notify(devlink,
1017 "Preparing to flash",
1018 params->component, 0, 0);
1021 for (i = 0; i < NSIM_DEV_FLASH_SIZE / NSIM_DEV_FLASH_CHUNK_SIZE; i++) {
1022 if (nsim_dev->fw_update_status)
1023 devlink_flash_update_status_notify(devlink, "Flashing",
1025 i * NSIM_DEV_FLASH_CHUNK_SIZE,
1026 NSIM_DEV_FLASH_SIZE);
1027 msleep(NSIM_DEV_FLASH_CHUNK_TIME_MS);
1030 if (nsim_dev->fw_update_status) {
1031 devlink_flash_update_status_notify(devlink, "Flashing",
1033 NSIM_DEV_FLASH_SIZE,
1034 NSIM_DEV_FLASH_SIZE);
1035 devlink_flash_update_timeout_notify(devlink, "Flash select",
1036 params->component, 81);
1037 devlink_flash_update_status_notify(devlink, "Flashing done",
1038 params->component, 0, 0);
1044 static struct nsim_trap_item *
1045 nsim_dev_trap_item_lookup(struct nsim_dev *nsim_dev, u16 trap_id)
1047 struct nsim_trap_data *nsim_trap_data = nsim_dev->trap_data;
1050 for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) {
1051 if (nsim_traps_arr[i].id == trap_id)
1052 return &nsim_trap_data->trap_items_arr[i];
1058 static int nsim_dev_devlink_trap_init(struct devlink *devlink,
1059 const struct devlink_trap *trap,
1062 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1063 struct nsim_trap_item *nsim_trap_item;
1065 nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id);
1066 if (WARN_ON(!nsim_trap_item))
1069 nsim_trap_item->trap_ctx = trap_ctx;
1070 nsim_trap_item->action = trap->init_action;
1076 nsim_dev_devlink_trap_action_set(struct devlink *devlink,
1077 const struct devlink_trap *trap,
1078 enum devlink_trap_action action,
1079 struct netlink_ext_ack *extack)
1081 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1082 struct nsim_trap_item *nsim_trap_item;
1084 nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id);
1085 if (WARN_ON(!nsim_trap_item))
1088 spin_lock(&nsim_dev->trap_data->trap_lock);
1089 nsim_trap_item->action = action;
1090 spin_unlock(&nsim_dev->trap_data->trap_lock);
1096 nsim_dev_devlink_trap_group_set(struct devlink *devlink,
1097 const struct devlink_trap_group *group,
1098 const struct devlink_trap_policer *policer,
1099 struct netlink_ext_ack *extack)
1101 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1103 if (nsim_dev->fail_trap_group_set)
1110 nsim_dev_devlink_trap_policer_set(struct devlink *devlink,
1111 const struct devlink_trap_policer *policer,
1112 u64 rate, u64 burst,
1113 struct netlink_ext_ack *extack)
1115 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1117 if (nsim_dev->fail_trap_policer_set) {
1118 NL_SET_ERR_MSG_MOD(extack, "User setup the operation to fail for testing purposes");
1126 nsim_dev_devlink_trap_policer_counter_get(struct devlink *devlink,
1127 const struct devlink_trap_policer *policer,
1130 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1133 if (nsim_dev->fail_trap_policer_counter_get)
1136 cnt = &nsim_dev->trap_data->trap_policers_cnt_arr[policer->id - 1];
1137 *p_drops = (*cnt)++;
1142 #define NSIM_LINK_SPEED_MAX 5000 /* Mbps */
1143 #define NSIM_LINK_SPEED_UNIT 125000 /* 1 Mbps given in bytes/sec to avoid
1144 * u64 overflow during conversion from
1148 static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ack *extack)
1153 val = div_u64_rem(*rate, NSIM_LINK_SPEED_UNIT, &rem);
1155 pr_err("%s rate value %lluBps not in link speed units of 1Mbps.\n",
1157 NL_SET_ERR_MSG_MOD(extack, "TX rate value not in link speed units of 1Mbps.");
1161 if (val > NSIM_LINK_SPEED_MAX) {
1162 pr_err("%s rate value %lluMbps exceed link maximum speed 5000Mbps.\n",
1164 NL_SET_ERR_MSG_MOD(extack, "TX rate value exceed link maximum speed 5000Mbps.");
1171 static int nsim_leaf_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
1172 u64 tx_share, struct netlink_ext_ack *extack)
1174 struct nsim_dev_port *nsim_dev_port = priv;
1175 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
1176 int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index);
1179 err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack);
1183 nsim_dev->vfconfigs[vf_id].min_tx_rate = tx_share;
1187 static int nsim_leaf_tx_max_set(struct devlink_rate *devlink_rate, void *priv,
1188 u64 tx_max, struct netlink_ext_ack *extack)
1190 struct nsim_dev_port *nsim_dev_port = priv;
1191 struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev;
1192 int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index);
1195 err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack);
1199 nsim_dev->vfconfigs[vf_id].max_tx_rate = tx_max;
1203 struct nsim_rate_node {
1204 struct dentry *ddir;
1205 struct dentry *rate_parent;
1211 static int nsim_node_tx_share_set(struct devlink_rate *devlink_rate, void *priv,
1212 u64 tx_share, struct netlink_ext_ack *extack)
1214 struct nsim_rate_node *nsim_node = priv;
1217 err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack);
1221 nsim_node->tx_share = tx_share;
1225 static int nsim_node_tx_max_set(struct devlink_rate *devlink_rate, void *priv,
1226 u64 tx_max, struct netlink_ext_ack *extack)
1228 struct nsim_rate_node *nsim_node = priv;
1231 err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack);
1235 nsim_node->tx_max = tx_max;
1239 static int nsim_rate_node_new(struct devlink_rate *node, void **priv,
1240 struct netlink_ext_ack *extack)
1242 struct nsim_dev *nsim_dev = devlink_priv(node->devlink);
1243 struct nsim_rate_node *nsim_node;
1245 if (!nsim_esw_mode_is_switchdev(nsim_dev)) {
1246 NL_SET_ERR_MSG_MOD(extack, "Node creation allowed only in switchdev mode.");
1250 nsim_node = kzalloc(sizeof(*nsim_node), GFP_KERNEL);
1254 nsim_node->ddir = debugfs_create_dir(node->name, nsim_dev->nodes_ddir);
1256 debugfs_create_u16("tx_share", 0400, nsim_node->ddir, &nsim_node->tx_share);
1257 debugfs_create_u16("tx_max", 0400, nsim_node->ddir, &nsim_node->tx_max);
1258 nsim_node->rate_parent = debugfs_create_file("rate_parent", 0400,
1260 &nsim_node->parent_name,
1261 &nsim_dev_rate_parent_fops);
1267 static int nsim_rate_node_del(struct devlink_rate *node, void *priv,
1268 struct netlink_ext_ack *extack)
1270 struct nsim_rate_node *nsim_node = priv;
1272 debugfs_remove(nsim_node->rate_parent);
1273 debugfs_remove_recursive(nsim_node->ddir);
1278 static int nsim_rate_leaf_parent_set(struct devlink_rate *child,
1279 struct devlink_rate *parent,
1280 void *priv_child, void *priv_parent,
1281 struct netlink_ext_ack *extack)
1283 struct nsim_dev_port *nsim_dev_port = priv_child;
1286 nsim_dev_port->parent_name = parent->name;
1288 nsim_dev_port->parent_name = NULL;
1292 static int nsim_rate_node_parent_set(struct devlink_rate *child,
1293 struct devlink_rate *parent,
1294 void *priv_child, void *priv_parent,
1295 struct netlink_ext_ack *extack)
1297 struct nsim_rate_node *nsim_node = priv_child;
1300 nsim_node->parent_name = parent->name;
1302 nsim_node->parent_name = NULL;
1307 nsim_dev_devlink_trap_drop_counter_get(struct devlink *devlink,
1308 const struct devlink_trap *trap,
1311 struct nsim_dev *nsim_dev = devlink_priv(devlink);
1314 if (nsim_dev->fail_trap_drop_counter_get)
1317 cnt = &nsim_dev->trap_data->trap_pkt_cnt;
1318 *p_drops = (*cnt)++;
1323 static const struct devlink_ops nsim_dev_devlink_ops = {
1324 .eswitch_mode_set = nsim_devlink_eswitch_mode_set,
1325 .eswitch_mode_get = nsim_devlink_eswitch_mode_get,
1326 .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT |
1327 DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK,
1328 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
1329 .reload_down = nsim_dev_reload_down,
1330 .reload_up = nsim_dev_reload_up,
1331 .info_get = nsim_dev_info_get,
1332 .flash_update = nsim_dev_flash_update,
1333 .trap_init = nsim_dev_devlink_trap_init,
1334 .trap_action_set = nsim_dev_devlink_trap_action_set,
1335 .trap_group_set = nsim_dev_devlink_trap_group_set,
1336 .trap_policer_set = nsim_dev_devlink_trap_policer_set,
1337 .trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get,
1338 .rate_leaf_tx_share_set = nsim_leaf_tx_share_set,
1339 .rate_leaf_tx_max_set = nsim_leaf_tx_max_set,
1340 .rate_node_tx_share_set = nsim_node_tx_share_set,
1341 .rate_node_tx_max_set = nsim_node_tx_max_set,
1342 .rate_node_new = nsim_rate_node_new,
1343 .rate_node_del = nsim_rate_node_del,
1344 .rate_leaf_parent_set = nsim_rate_leaf_parent_set,
1345 .rate_node_parent_set = nsim_rate_node_parent_set,
1346 .trap_drop_counter_get = nsim_dev_devlink_trap_drop_counter_get,
1349 #define NSIM_DEV_MAX_MACS_DEFAULT 32
1350 #define NSIM_DEV_TEST1_DEFAULT true
1352 static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
1353 unsigned int port_index)
1355 struct devlink_port_attrs attrs = {};
1356 struct nsim_dev_port *nsim_dev_port;
1357 struct devlink_port *devlink_port;
1360 if (type == NSIM_DEV_PORT_TYPE_VF && !nsim_dev_get_vfs(nsim_dev))
1363 nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL);
1366 nsim_dev_port->port_index = nsim_dev_port_index(type, port_index);
1367 nsim_dev_port->port_type = type;
1369 devlink_port = &nsim_dev_port->devlink_port;
1370 if (nsim_dev_port_is_pf(nsim_dev_port)) {
1371 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
1372 attrs.phys.port_number = port_index + 1;
1374 attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
1375 attrs.pci_vf.pf = 0;
1376 attrs.pci_vf.vf = port_index;
1378 memcpy(attrs.switch_id.id, nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
1379 attrs.switch_id.id_len = nsim_dev->switch_id.id_len;
1380 devlink_port_attrs_set(devlink_port, &attrs);
1381 err = devl_port_register(priv_to_devlink(nsim_dev), devlink_port,
1382 nsim_dev_port->port_index);
1386 err = nsim_dev_port_debugfs_init(nsim_dev, nsim_dev_port);
1388 goto err_dl_port_unregister;
1390 nsim_dev_port->ns = nsim_create(nsim_dev, nsim_dev_port);
1391 if (IS_ERR(nsim_dev_port->ns)) {
1392 err = PTR_ERR(nsim_dev_port->ns);
1393 goto err_port_debugfs_exit;
1396 if (nsim_dev_port_is_vf(nsim_dev_port)) {
1397 err = devl_rate_leaf_create(&nsim_dev_port->devlink_port,
1400 goto err_nsim_destroy;
1403 devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev);
1404 list_add(&nsim_dev_port->list, &nsim_dev->port_list);
1409 nsim_destroy(nsim_dev_port->ns);
1410 err_port_debugfs_exit:
1411 nsim_dev_port_debugfs_exit(nsim_dev_port);
1412 err_dl_port_unregister:
1413 devl_port_unregister(devlink_port);
1415 kfree(nsim_dev_port);
1419 static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port)
1421 struct devlink_port *devlink_port = &nsim_dev_port->devlink_port;
1423 list_del(&nsim_dev_port->list);
1424 if (nsim_dev_port_is_vf(nsim_dev_port))
1425 devl_rate_leaf_destroy(&nsim_dev_port->devlink_port);
1426 devlink_port_type_clear(devlink_port);
1427 nsim_destroy(nsim_dev_port->ns);
1428 nsim_dev_port_debugfs_exit(nsim_dev_port);
1429 devl_port_unregister(devlink_port);
1430 kfree(nsim_dev_port);
1433 static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
1435 struct nsim_dev_port *nsim_dev_port, *tmp;
1437 devl_lock(priv_to_devlink(nsim_dev));
1438 list_for_each_entry_safe(nsim_dev_port, tmp,
1439 &nsim_dev->port_list, list)
1440 __nsim_dev_port_del(nsim_dev_port);
1441 devl_unlock(priv_to_devlink(nsim_dev));
1444 static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
1445 unsigned int port_count)
1449 for (i = 0; i < port_count; i++) {
1450 devl_lock(priv_to_devlink(nsim_dev));
1451 err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_PF, i);
1452 devl_unlock(priv_to_devlink(nsim_dev));
1454 goto err_port_del_all;
1459 nsim_dev_port_del_all(nsim_dev);
1463 static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
1464 struct netlink_ext_ack *extack)
1466 struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
1467 struct devlink *devlink;
1470 devlink = priv_to_devlink(nsim_dev);
1471 nsim_dev = devlink_priv(devlink);
1472 INIT_LIST_HEAD(&nsim_dev->port_list);
1473 nsim_dev->fw_update_status = true;
1474 nsim_dev->fw_update_overwrite_mask = 0;
1476 nsim_devlink_param_load_driverinit_values(devlink);
1478 err = nsim_dev_dummy_region_init(nsim_dev, devlink);
1482 err = nsim_dev_traps_init(devlink);
1484 goto err_dummy_region_exit;
1486 nsim_dev->fib_data = nsim_fib_create(devlink, extack);
1487 if (IS_ERR(nsim_dev->fib_data)) {
1488 err = PTR_ERR(nsim_dev->fib_data);
1489 goto err_traps_exit;
1492 err = nsim_dev_health_init(nsim_dev, devlink);
1494 goto err_fib_destroy;
1496 err = nsim_dev_psample_init(nsim_dev);
1498 goto err_health_exit;
1500 err = nsim_dev_hwstats_init(nsim_dev);
1502 goto err_psample_exit;
1504 err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
1506 goto err_hwstats_exit;
1508 nsim_dev->take_snapshot = debugfs_create_file("take_snapshot",
1512 &nsim_dev_take_snapshot_fops);
1516 nsim_dev_hwstats_exit(nsim_dev);
1518 nsim_dev_psample_exit(nsim_dev);
1520 nsim_dev_health_exit(nsim_dev);
1522 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1524 nsim_dev_traps_exit(devlink);
1525 err_dummy_region_exit:
1526 nsim_dev_dummy_region_exit(nsim_dev);
1530 int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
1532 struct nsim_dev *nsim_dev;
1533 struct devlink *devlink;
1536 devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev),
1537 nsim_bus_dev->initial_net, &nsim_bus_dev->dev);
1540 nsim_dev = devlink_priv(devlink);
1541 nsim_dev->nsim_bus_dev = nsim_bus_dev;
1542 nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
1543 get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
1544 INIT_LIST_HEAD(&nsim_dev->port_list);
1545 nsim_dev->fw_update_status = true;
1546 nsim_dev->fw_update_overwrite_mask = 0;
1547 nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT;
1548 nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT;
1549 spin_lock_init(&nsim_dev->fa_cookie_lock);
1551 dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev);
1553 nsim_dev->vfconfigs = kcalloc(nsim_bus_dev->max_vfs,
1554 sizeof(struct nsim_vf_config),
1555 GFP_KERNEL | __GFP_NOWARN);
1556 if (!nsim_dev->vfconfigs) {
1558 goto err_devlink_free;
1561 err = nsim_dev_resources_register(devlink);
1565 err = devlink_params_register(devlink, nsim_devlink_params,
1566 ARRAY_SIZE(nsim_devlink_params));
1568 goto err_dl_unregister;
1569 nsim_devlink_set_params_init_values(nsim_dev, devlink);
1571 err = nsim_dev_dummy_region_init(nsim_dev, devlink);
1573 goto err_params_unregister;
1575 err = nsim_dev_traps_init(devlink);
1577 goto err_dummy_region_exit;
1579 err = nsim_dev_debugfs_init(nsim_dev);
1581 goto err_traps_exit;
1583 nsim_dev->fib_data = nsim_fib_create(devlink, NULL);
1584 if (IS_ERR(nsim_dev->fib_data)) {
1585 err = PTR_ERR(nsim_dev->fib_data);
1586 goto err_debugfs_exit;
1589 err = nsim_dev_health_init(nsim_dev, devlink);
1591 goto err_fib_destroy;
1593 err = nsim_bpf_dev_init(nsim_dev);
1595 goto err_health_exit;
1597 err = nsim_dev_psample_init(nsim_dev);
1599 goto err_bpf_dev_exit;
1601 err = nsim_dev_hwstats_init(nsim_dev);
1603 goto err_psample_exit;
1605 err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
1607 goto err_hwstats_exit;
1609 nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
1610 devlink_set_features(devlink, DEVLINK_F_RELOAD);
1611 devlink_register(devlink);
1615 nsim_dev_hwstats_exit(nsim_dev);
1617 nsim_dev_psample_exit(nsim_dev);
1619 nsim_bpf_dev_exit(nsim_dev);
1621 nsim_dev_health_exit(nsim_dev);
1623 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1625 nsim_dev_debugfs_exit(nsim_dev);
1627 nsim_dev_traps_exit(devlink);
1628 err_dummy_region_exit:
1629 nsim_dev_dummy_region_exit(nsim_dev);
1630 err_params_unregister:
1631 devlink_params_unregister(devlink, nsim_devlink_params,
1632 ARRAY_SIZE(nsim_devlink_params));
1634 devlink_resources_unregister(devlink);
1636 kfree(nsim_dev->vfconfigs);
1638 devlink_free(devlink);
1639 dev_set_drvdata(&nsim_bus_dev->dev, NULL);
1643 static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev)
1645 struct devlink *devlink = priv_to_devlink(nsim_dev);
1647 if (devlink_is_reload_failed(devlink))
1649 debugfs_remove(nsim_dev->take_snapshot);
1652 if (nsim_dev_get_vfs(nsim_dev)) {
1653 nsim_bus_dev_set_vfs(nsim_dev->nsim_bus_dev, 0);
1654 if (nsim_esw_mode_is_switchdev(nsim_dev))
1655 nsim_esw_legacy_enable(nsim_dev, NULL);
1657 devl_unlock(devlink);
1659 nsim_dev_port_del_all(nsim_dev);
1660 nsim_dev_hwstats_exit(nsim_dev);
1661 nsim_dev_psample_exit(nsim_dev);
1662 nsim_dev_health_exit(nsim_dev);
1663 nsim_fib_destroy(devlink, nsim_dev->fib_data);
1664 nsim_dev_traps_exit(devlink);
1665 nsim_dev_dummy_region_exit(nsim_dev);
1668 void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev)
1670 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1671 struct devlink *devlink = priv_to_devlink(nsim_dev);
1673 devlink_unregister(devlink);
1674 nsim_dev_reload_destroy(nsim_dev);
1676 nsim_bpf_dev_exit(nsim_dev);
1677 nsim_dev_debugfs_exit(nsim_dev);
1678 devlink_params_unregister(devlink, nsim_devlink_params,
1679 ARRAY_SIZE(nsim_devlink_params));
1680 devlink_resources_unregister(devlink);
1681 kfree(nsim_dev->vfconfigs);
1682 devlink_free(devlink);
1683 dev_set_drvdata(&nsim_bus_dev->dev, NULL);
1686 static struct nsim_dev_port *
1687 __nsim_dev_port_lookup(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type,
1688 unsigned int port_index)
1690 struct nsim_dev_port *nsim_dev_port;
1692 port_index = nsim_dev_port_index(type, port_index);
1693 list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list)
1694 if (nsim_dev_port->port_index == port_index)
1695 return nsim_dev_port;
1699 int nsim_drv_port_add(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type,
1700 unsigned int port_index)
1702 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1705 devl_lock(priv_to_devlink(nsim_dev));
1706 if (__nsim_dev_port_lookup(nsim_dev, type, port_index))
1709 err = __nsim_dev_port_add(nsim_dev, type, port_index);
1710 devl_unlock(priv_to_devlink(nsim_dev));
1714 int nsim_drv_port_del(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type,
1715 unsigned int port_index)
1717 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1718 struct nsim_dev_port *nsim_dev_port;
1721 devl_lock(priv_to_devlink(nsim_dev));
1722 nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, type, port_index);
1726 __nsim_dev_port_del(nsim_dev_port);
1727 devl_unlock(priv_to_devlink(nsim_dev));
1731 int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev,
1732 unsigned int num_vfs)
1734 struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
1735 struct devlink *devlink = priv_to_devlink(nsim_dev);
1739 if (nsim_bus_dev->num_vfs == num_vfs)
1741 if (nsim_bus_dev->num_vfs && num_vfs) {
1745 if (nsim_bus_dev->max_vfs < num_vfs) {
1750 nsim_bus_dev_set_vfs(nsim_bus_dev, num_vfs);
1751 if (nsim_esw_mode_is_switchdev(nsim_dev)) {
1753 ret = nsim_esw_switchdev_enable(nsim_dev, NULL);
1755 nsim_bus_dev_set_vfs(nsim_bus_dev, 0);
1759 nsim_esw_legacy_enable(nsim_dev, NULL);
1764 devl_unlock(devlink);
1769 int nsim_dev_init(void)
1771 nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL);
1772 return PTR_ERR_OR_ZERO(nsim_dev_ddir);
1775 void nsim_dev_exit(void)
1777 debugfs_remove_recursive(nsim_dev_ddir);