1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
7 #include "devl_internal.h"
9 #define DEVLINK_PORT_FN_CAPS_VALID_MASK \
10 (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1)
12 static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
13 [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
14 [DEVLINK_PORT_FN_ATTR_STATE] =
15 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
16 DEVLINK_PORT_FN_STATE_ACTIVE),
17 [DEVLINK_PORT_FN_ATTR_CAPS] =
18 NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK),
21 #define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
22 WARN_ON_ONCE(!(devlink_port)->registered)
23 #define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
24 WARN_ON_ONCE((devlink_port)->registered)
26 struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
27 unsigned int port_index)
29 return xa_load(&devlink->ports, port_index);
32 struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
33 struct nlattr **attrs)
35 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
36 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
37 struct devlink_port *devlink_port;
39 devlink_port = devlink_port_get_by_index(devlink, port_index);
41 return ERR_PTR(-ENODEV);
44 return ERR_PTR(-EINVAL);
47 struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
48 struct genl_info *info)
50 return devlink_port_get_from_attrs(devlink, info->attrs);
53 static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps,
54 u32 cap, bool is_enable)
56 caps->selector |= cap;
61 static int devlink_port_fn_roce_fill(struct devlink_port *devlink_port,
62 struct nla_bitfield32 *caps,
63 struct netlink_ext_ack *extack)
68 if (!devlink_port->ops->port_fn_roce_get)
71 err = devlink_port->ops->port_fn_roce_get(devlink_port, &is_enable,
74 if (err == -EOPNOTSUPP)
79 devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable);
83 static int devlink_port_fn_migratable_fill(struct devlink_port *devlink_port,
84 struct nla_bitfield32 *caps,
85 struct netlink_ext_ack *extack)
90 if (!devlink_port->ops->port_fn_migratable_get ||
91 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
94 err = devlink_port->ops->port_fn_migratable_get(devlink_port,
97 if (err == -EOPNOTSUPP)
102 devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable);
106 static int devlink_port_fn_ipsec_crypto_fill(struct devlink_port *devlink_port,
107 struct nla_bitfield32 *caps,
108 struct netlink_ext_ack *extack)
113 if (!devlink_port->ops->port_fn_ipsec_crypto_get ||
114 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
117 err = devlink_port->ops->port_fn_ipsec_crypto_get(devlink_port, &is_enable, extack);
119 if (err == -EOPNOTSUPP)
124 devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO, is_enable);
128 static int devlink_port_fn_ipsec_packet_fill(struct devlink_port *devlink_port,
129 struct nla_bitfield32 *caps,
130 struct netlink_ext_ack *extack)
135 if (!devlink_port->ops->port_fn_ipsec_packet_get ||
136 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
139 err = devlink_port->ops->port_fn_ipsec_packet_get(devlink_port, &is_enable, extack);
141 if (err == -EOPNOTSUPP)
146 devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_IPSEC_PACKET, is_enable);
150 static int devlink_port_fn_caps_fill(struct devlink_port *devlink_port,
152 struct netlink_ext_ack *extack,
155 struct nla_bitfield32 caps = {};
158 err = devlink_port_fn_roce_fill(devlink_port, &caps, extack);
162 err = devlink_port_fn_migratable_fill(devlink_port, &caps, extack);
166 err = devlink_port_fn_ipsec_crypto_fill(devlink_port, &caps, extack);
170 err = devlink_port_fn_ipsec_packet_fill(devlink_port, &caps, extack);
176 err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value,
185 int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
187 if (devlink_nl_put_handle(msg, devlink_port->devlink))
189 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
194 size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
196 struct devlink *devlink = devlink_port->devlink;
198 return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
199 + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
200 + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
203 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
204 struct devlink_port *devlink_port)
206 struct devlink_port_attrs *attrs = &devlink_port->attrs;
208 if (!devlink_port->attrs_set)
211 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
214 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
216 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
218 switch (devlink_port->attrs.flavour) {
219 case DEVLINK_PORT_FLAVOUR_PCI_PF:
220 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
221 attrs->pci_pf.controller) ||
222 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
224 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
227 case DEVLINK_PORT_FLAVOUR_PCI_VF:
228 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
229 attrs->pci_vf.controller) ||
230 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
231 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
233 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
236 case DEVLINK_PORT_FLAVOUR_PCI_SF:
237 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
238 attrs->pci_sf.controller) ||
239 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
241 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
245 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
246 case DEVLINK_PORT_FLAVOUR_CPU:
247 case DEVLINK_PORT_FLAVOUR_DSA:
248 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
249 attrs->phys.port_number))
253 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
254 attrs->phys.port_number))
256 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
257 attrs->phys.split_subport_number))
266 static int devlink_port_fn_hw_addr_fill(struct devlink_port *port,
268 struct netlink_ext_ack *extack,
271 u8 hw_addr[MAX_ADDR_LEN];
275 if (!port->ops->port_fn_hw_addr_get)
278 err = port->ops->port_fn_hw_addr_get(port, hw_addr, &hw_addr_len,
281 if (err == -EOPNOTSUPP)
285 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
293 devlink_port_fn_state_valid(enum devlink_port_fn_state state)
295 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
296 state == DEVLINK_PORT_FN_STATE_ACTIVE;
300 devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
302 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
303 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
306 static int devlink_port_fn_state_fill(struct devlink_port *port,
308 struct netlink_ext_ack *extack,
311 enum devlink_port_fn_opstate opstate;
312 enum devlink_port_fn_state state;
315 if (!port->ops->port_fn_state_get)
318 err = port->ops->port_fn_state_get(port, &state, &opstate, extack);
320 if (err == -EOPNOTSUPP)
324 if (!devlink_port_fn_state_valid(state)) {
326 NL_SET_ERR_MSG(extack, "Invalid state read from driver");
329 if (!devlink_port_fn_opstate_valid(opstate)) {
331 NL_SET_ERR_MSG(extack, "Invalid operational state read from driver");
334 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
335 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
342 devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable,
343 struct netlink_ext_ack *extack)
345 return devlink_port->ops->port_fn_migratable_set(devlink_port, enable,
350 devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable,
351 struct netlink_ext_ack *extack)
353 return devlink_port->ops->port_fn_roce_set(devlink_port, enable,
358 devlink_port_fn_ipsec_crypto_set(struct devlink_port *devlink_port, bool enable,
359 struct netlink_ext_ack *extack)
361 return devlink_port->ops->port_fn_ipsec_crypto_set(devlink_port, enable, extack);
365 devlink_port_fn_ipsec_packet_set(struct devlink_port *devlink_port, bool enable,
366 struct netlink_ext_ack *extack)
368 return devlink_port->ops->port_fn_ipsec_packet_set(devlink_port, enable, extack);
371 static int devlink_port_fn_caps_set(struct devlink_port *devlink_port,
372 const struct nlattr *attr,
373 struct netlink_ext_ack *extack)
375 struct nla_bitfield32 caps;
379 caps = nla_get_bitfield32(attr);
380 caps_value = caps.value & caps.selector;
381 if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) {
382 err = devlink_port_fn_roce_set(devlink_port,
383 caps_value & DEVLINK_PORT_FN_CAP_ROCE,
388 if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
389 err = devlink_port_fn_mig_set(devlink_port, caps_value &
390 DEVLINK_PORT_FN_CAP_MIGRATABLE,
395 if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO) {
396 err = devlink_port_fn_ipsec_crypto_set(devlink_port, caps_value &
397 DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO,
402 if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_PACKET) {
403 err = devlink_port_fn_ipsec_packet_set(devlink_port, caps_value &
404 DEVLINK_PORT_FN_CAP_IPSEC_PACKET,
413 devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
414 struct netlink_ext_ack *extack)
416 struct nlattr *function_attr;
417 bool msg_updated = false;
420 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
424 err = devlink_port_fn_hw_addr_fill(port, msg, extack, &msg_updated);
427 err = devlink_port_fn_caps_fill(port, msg, extack, &msg_updated);
430 err = devlink_port_fn_state_fill(port, msg, extack, &msg_updated);
433 err = devlink_rel_devlink_handle_put(msg, port->devlink,
435 DEVLINK_PORT_FN_ATTR_DEVLINK,
439 if (err || !msg_updated)
440 nla_nest_cancel(msg, function_attr);
442 nla_nest_end(msg, function_attr);
446 static int devlink_nl_port_fill(struct sk_buff *msg,
447 struct devlink_port *devlink_port,
448 enum devlink_command cmd, u32 portid, u32 seq,
449 int flags, struct netlink_ext_ack *extack)
451 struct devlink *devlink = devlink_port->devlink;
454 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
458 if (devlink_nl_put_handle(msg, devlink))
459 goto nla_put_failure;
460 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
461 goto nla_put_failure;
463 spin_lock_bh(&devlink_port->type_lock);
464 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
465 goto nla_put_failure_type_locked;
466 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
467 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
468 devlink_port->desired_type))
469 goto nla_put_failure_type_locked;
470 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
471 if (devlink_port->type_eth.netdev &&
472 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
473 devlink_port->type_eth.ifindex) ||
474 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
475 devlink_port->type_eth.ifname)))
476 goto nla_put_failure_type_locked;
478 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
479 struct ib_device *ibdev = devlink_port->type_ib.ibdev;
482 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
484 goto nla_put_failure_type_locked;
486 spin_unlock_bh(&devlink_port->type_lock);
487 if (devlink_nl_port_attrs_put(msg, devlink_port))
488 goto nla_put_failure;
489 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
490 goto nla_put_failure;
491 if (devlink_port->linecard &&
492 nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
493 devlink_linecard_index(devlink_port->linecard)))
494 goto nla_put_failure;
496 genlmsg_end(msg, hdr);
499 nla_put_failure_type_locked:
500 spin_unlock_bh(&devlink_port->type_lock);
502 genlmsg_cancel(msg, hdr);
506 static void devlink_port_notify(struct devlink_port *devlink_port,
507 enum devlink_command cmd)
509 struct devlink *devlink = devlink_port->devlink;
513 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
515 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
522 err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
528 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
529 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
532 static void devlink_ports_notify(struct devlink *devlink,
533 enum devlink_command cmd)
535 struct devlink_port *devlink_port;
536 unsigned long port_index;
538 xa_for_each(&devlink->ports, port_index, devlink_port)
539 devlink_port_notify(devlink_port, cmd);
542 void devlink_ports_notify_register(struct devlink *devlink)
544 devlink_ports_notify(devlink, DEVLINK_CMD_PORT_NEW);
547 void devlink_ports_notify_unregister(struct devlink *devlink)
549 devlink_ports_notify(devlink, DEVLINK_CMD_PORT_DEL);
552 int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info)
554 struct devlink_port *devlink_port = info->user_ptr[1];
558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
562 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
563 info->snd_portid, info->snd_seq, 0,
570 return genlmsg_reply(msg, info);
574 devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
575 struct netlink_callback *cb, int flags)
577 struct devlink_nl_dump_state *state = devlink_dump_state(cb);
578 struct devlink_port *devlink_port;
579 unsigned long port_index;
582 xa_for_each_start(&devlink->ports, port_index, devlink_port, state->idx) {
583 err = devlink_nl_port_fill(msg, devlink_port,
585 NETLINK_CB(cb->skb).portid,
586 cb->nlh->nlmsg_seq, flags,
589 state->idx = port_index;
597 int devlink_nl_port_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
599 return devlink_nl_dumpit(skb, cb, devlink_nl_port_get_dump_one);
602 static int devlink_port_type_set(struct devlink_port *devlink_port,
603 enum devlink_port_type port_type)
608 if (!devlink_port->ops->port_type_set)
611 if (port_type == devlink_port->type)
614 err = devlink_port->ops->port_type_set(devlink_port, port_type);
618 devlink_port->desired_type = port_type;
619 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
623 static int devlink_port_function_hw_addr_set(struct devlink_port *port,
624 const struct nlattr *attr,
625 struct netlink_ext_ack *extack)
630 hw_addr = nla_data(attr);
631 hw_addr_len = nla_len(attr);
632 if (hw_addr_len > MAX_ADDR_LEN) {
633 NL_SET_ERR_MSG(extack, "Port function hardware address too long");
636 if (port->type == DEVLINK_PORT_TYPE_ETH) {
637 if (hw_addr_len != ETH_ALEN) {
638 NL_SET_ERR_MSG(extack, "Address must be 6 bytes for Ethernet device");
641 if (!is_unicast_ether_addr(hw_addr)) {
642 NL_SET_ERR_MSG(extack, "Non-unicast hardware address unsupported");
647 return port->ops->port_fn_hw_addr_set(port, hw_addr, hw_addr_len,
651 static int devlink_port_fn_state_set(struct devlink_port *port,
652 const struct nlattr *attr,
653 struct netlink_ext_ack *extack)
655 enum devlink_port_fn_state state;
657 state = nla_get_u8(attr);
658 return port->ops->port_fn_state_set(port, state, extack);
661 static int devlink_port_function_validate(struct devlink_port *devlink_port,
663 struct netlink_ext_ack *extack)
665 const struct devlink_port_ops *ops = devlink_port->ops;
668 if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] &&
669 !ops->port_fn_hw_addr_set) {
670 NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
671 "Port doesn't support function attributes");
674 if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) {
675 NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
676 "Function does not support state setting");
679 attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
681 struct nla_bitfield32 caps;
683 caps = nla_get_bitfield32(attr);
684 if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE &&
685 !ops->port_fn_roce_set) {
686 NL_SET_ERR_MSG_ATTR(extack, attr,
687 "Port doesn't support RoCE function attribute");
690 if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
691 if (!ops->port_fn_migratable_set) {
692 NL_SET_ERR_MSG_ATTR(extack, attr,
693 "Port doesn't support migratable function attribute");
696 if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
697 NL_SET_ERR_MSG_ATTR(extack, attr,
698 "migratable function attribute supported for VFs only");
702 if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_CRYPTO) {
703 if (!ops->port_fn_ipsec_crypto_set) {
704 NL_SET_ERR_MSG_ATTR(extack, attr,
705 "Port doesn't support ipsec_crypto function attribute");
708 if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
709 NL_SET_ERR_MSG_ATTR(extack, attr,
710 "ipsec_crypto function attribute supported for VFs only");
714 if (caps.selector & DEVLINK_PORT_FN_CAP_IPSEC_PACKET) {
715 if (!ops->port_fn_ipsec_packet_set) {
716 NL_SET_ERR_MSG_ATTR(extack, attr,
717 "Port doesn't support ipsec_packet function attribute");
720 if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
721 NL_SET_ERR_MSG_ATTR(extack, attr,
722 "ipsec_packet function attribute supported for VFs only");
730 static int devlink_port_function_set(struct devlink_port *port,
731 const struct nlattr *attr,
732 struct netlink_ext_ack *extack)
734 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
737 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
738 devlink_function_nl_policy, extack);
740 NL_SET_ERR_MSG(extack, "Fail to parse port function attributes");
744 err = devlink_port_function_validate(port, tb, extack);
748 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
750 err = devlink_port_function_hw_addr_set(port, attr, extack);
755 attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
757 err = devlink_port_fn_caps_set(port, attr, extack);
762 /* Keep this as the last function attribute set, so that when
763 * multiple port function attributes are set along with state,
764 * Those can be applied first before activating the state.
766 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
768 err = devlink_port_fn_state_set(port, attr, extack);
771 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
775 int devlink_nl_port_set_doit(struct sk_buff *skb, struct genl_info *info)
777 struct devlink_port *devlink_port = info->user_ptr[1];
780 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
781 enum devlink_port_type port_type;
783 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
784 err = devlink_port_type_set(devlink_port, port_type);
789 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
790 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
791 struct netlink_ext_ack *extack = info->extack;
793 err = devlink_port_function_set(devlink_port, attr, extack);
801 int devlink_nl_port_split_doit(struct sk_buff *skb, struct genl_info *info)
803 struct devlink_port *devlink_port = info->user_ptr[1];
804 struct devlink *devlink = info->user_ptr[0];
807 if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
809 if (!devlink_port->ops->port_split)
812 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
814 if (!devlink_port->attrs.splittable) {
815 /* Split ports cannot be split. */
816 if (devlink_port->attrs.split)
817 NL_SET_ERR_MSG(info->extack, "Port cannot be split further");
819 NL_SET_ERR_MSG(info->extack, "Port cannot be split");
823 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
824 NL_SET_ERR_MSG(info->extack, "Invalid split count");
828 return devlink_port->ops->port_split(devlink, devlink_port, count,
832 int devlink_nl_port_unsplit_doit(struct sk_buff *skb, struct genl_info *info)
834 struct devlink_port *devlink_port = info->user_ptr[1];
835 struct devlink *devlink = info->user_ptr[0];
837 if (!devlink_port->ops->port_unsplit)
839 return devlink_port->ops->port_unsplit(devlink, devlink_port, info->extack);
842 int devlink_nl_port_new_doit(struct sk_buff *skb, struct genl_info *info)
844 struct netlink_ext_ack *extack = info->extack;
845 struct devlink_port_new_attrs new_attrs = {};
846 struct devlink *devlink = info->user_ptr[0];
847 struct devlink_port *devlink_port;
851 if (!devlink->ops->port_new)
854 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
855 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
856 NL_SET_ERR_MSG(extack, "Port flavour or PCI PF are not specified");
859 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
861 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
863 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
864 /* Port index of the new port being created by driver. */
865 new_attrs.port_index =
866 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
867 new_attrs.port_index_valid = true;
869 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
870 new_attrs.controller =
871 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
872 new_attrs.controller_valid = true;
874 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
875 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
876 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
877 new_attrs.sfnum_valid = true;
880 err = devlink->ops->port_new(devlink, &new_attrs,
881 extack, &devlink_port);
885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
888 goto err_out_port_del;
890 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
891 info->snd_portid, info->snd_seq, 0, NULL);
892 if (WARN_ON_ONCE(err))
893 goto err_out_msg_free;
894 err = genlmsg_reply(msg, info);
896 goto err_out_port_del;
902 devlink_port->ops->port_del(devlink, devlink_port, NULL);
906 int devlink_nl_port_del_doit(struct sk_buff *skb, struct genl_info *info)
908 struct devlink_port *devlink_port = info->user_ptr[1];
909 struct netlink_ext_ack *extack = info->extack;
910 struct devlink *devlink = info->user_ptr[0];
912 if (!devlink_port->ops->port_del)
915 return devlink_port->ops->port_del(devlink, devlink_port, extack);
918 static void devlink_port_type_warn(struct work_struct *work)
920 struct devlink_port *port = container_of(to_delayed_work(work),
923 dev_warn(port->devlink->dev, "Type was not set for devlink port.");
926 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
928 /* Ignore CPU and DSA flavours. */
929 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
930 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
931 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
934 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
936 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
938 if (!devlink_port_type_should_warn(devlink_port))
940 /* Schedule a work to WARN in case driver does not set port
941 * type within timeout.
943 schedule_delayed_work(&devlink_port->type_warn_dw,
944 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
947 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
949 if (!devlink_port_type_should_warn(devlink_port))
951 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
955 * devlink_port_init() - Init devlink port
958 * @devlink_port: devlink port
960 * Initialize essential stuff that is needed for functions
961 * that may be called before devlink port registration.
962 * Call to this function is optional and not needed
963 * in case the driver does not use such functions.
965 void devlink_port_init(struct devlink *devlink,
966 struct devlink_port *devlink_port)
968 if (devlink_port->initialized)
970 devlink_port->devlink = devlink;
971 INIT_LIST_HEAD(&devlink_port->region_list);
972 devlink_port->initialized = true;
974 EXPORT_SYMBOL_GPL(devlink_port_init);
977 * devlink_port_fini() - Deinitialize devlink port
979 * @devlink_port: devlink port
981 * Deinitialize essential stuff that is in use for functions
982 * that may be called after devlink port unregistration.
983 * Call to this function is optional and not needed
984 * in case the driver does not use such functions.
986 void devlink_port_fini(struct devlink_port *devlink_port)
988 WARN_ON(!list_empty(&devlink_port->region_list));
990 EXPORT_SYMBOL_GPL(devlink_port_fini);
992 static const struct devlink_port_ops devlink_port_dummy_ops = {};
995 * devl_port_register_with_ops() - Register devlink port
998 * @devlink_port: devlink port
999 * @port_index: driver-specific numerical identifier of the port
1002 * Register devlink port with provided port index. User can use
1003 * any indexing, even hw-related one. devlink_port structure
1004 * is convenient to be embedded inside user driver private structure.
1005 * Note that the caller should take care of zeroing the devlink_port
1008 int devl_port_register_with_ops(struct devlink *devlink,
1009 struct devlink_port *devlink_port,
1010 unsigned int port_index,
1011 const struct devlink_port_ops *ops)
1015 devl_assert_locked(devlink);
1017 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1019 devlink_port_init(devlink, devlink_port);
1020 devlink_port->registered = true;
1021 devlink_port->index = port_index;
1022 devlink_port->ops = ops ? ops : &devlink_port_dummy_ops;
1023 spin_lock_init(&devlink_port->type_lock);
1024 INIT_LIST_HEAD(&devlink_port->reporter_list);
1025 err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
1027 devlink_port->registered = false;
1031 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
1032 devlink_port_type_warn_schedule(devlink_port);
1033 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1036 EXPORT_SYMBOL_GPL(devl_port_register_with_ops);
1039 * devlink_port_register_with_ops - Register devlink port
1042 * @devlink_port: devlink port
1043 * @port_index: driver-specific numerical identifier of the port
1046 * Register devlink port with provided port index. User can use
1047 * any indexing, even hw-related one. devlink_port structure
1048 * is convenient to be embedded inside user driver private structure.
1049 * Note that the caller should take care of zeroing the devlink_port
1052 * Context: Takes and release devlink->lock <mutex>.
1054 int devlink_port_register_with_ops(struct devlink *devlink,
1055 struct devlink_port *devlink_port,
1056 unsigned int port_index,
1057 const struct devlink_port_ops *ops)
1062 err = devl_port_register_with_ops(devlink, devlink_port,
1064 devl_unlock(devlink);
1067 EXPORT_SYMBOL_GPL(devlink_port_register_with_ops);
1070 * devl_port_unregister() - Unregister devlink port
1072 * @devlink_port: devlink port
1074 void devl_port_unregister(struct devlink_port *devlink_port)
1076 lockdep_assert_held(&devlink_port->devlink->lock);
1077 WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
1079 devlink_port_type_warn_cancel(devlink_port);
1080 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
1081 xa_erase(&devlink_port->devlink->ports, devlink_port->index);
1082 WARN_ON(!list_empty(&devlink_port->reporter_list));
1083 devlink_port->registered = false;
1085 EXPORT_SYMBOL_GPL(devl_port_unregister);
1088 * devlink_port_unregister - Unregister devlink port
1090 * @devlink_port: devlink port
1092 * Context: Takes and release devlink->lock <mutex>.
1094 void devlink_port_unregister(struct devlink_port *devlink_port)
1096 struct devlink *devlink = devlink_port->devlink;
1099 devl_port_unregister(devlink_port);
1100 devl_unlock(devlink);
1102 EXPORT_SYMBOL_GPL(devlink_port_unregister);
1104 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
1105 struct net_device *netdev)
1107 const struct net_device_ops *ops = netdev->netdev_ops;
1109 /* If driver registers devlink port, it should set devlink port
1110 * attributes accordingly so the compat functions are called
1111 * and the original ops are not used.
1113 if (ops->ndo_get_phys_port_name) {
1114 /* Some drivers use the same set of ndos for netdevs
1115 * that have devlink_port registered and also for
1116 * those who don't. Make sure that ndo_get_phys_port_name
1117 * returns -EOPNOTSUPP here in case it is defined.
1120 char name[IFNAMSIZ];
1123 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
1124 WARN_ON(err != -EOPNOTSUPP);
1126 if (ops->ndo_get_port_parent_id) {
1127 /* Some drivers use the same set of ndos for netdevs
1128 * that have devlink_port registered and also for
1129 * those who don't. Make sure that ndo_get_port_parent_id
1130 * returns -EOPNOTSUPP here in case it is defined.
1133 struct netdev_phys_item_id ppid;
1136 err = ops->ndo_get_port_parent_id(netdev, &ppid);
1137 WARN_ON(err != -EOPNOTSUPP);
1141 static void __devlink_port_type_set(struct devlink_port *devlink_port,
1142 enum devlink_port_type type,
1145 struct net_device *netdev = type_dev;
1147 ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
1149 if (type == DEVLINK_PORT_TYPE_NOTSET) {
1150 devlink_port_type_warn_schedule(devlink_port);
1152 devlink_port_type_warn_cancel(devlink_port);
1153 if (type == DEVLINK_PORT_TYPE_ETH && netdev)
1154 devlink_port_type_netdev_checks(devlink_port, netdev);
1157 spin_lock_bh(&devlink_port->type_lock);
1158 devlink_port->type = type;
1160 case DEVLINK_PORT_TYPE_ETH:
1161 devlink_port->type_eth.netdev = netdev;
1164 devlink_port->type_eth.ifindex = netdev->ifindex;
1165 BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
1166 sizeof(netdev->name));
1167 strcpy(devlink_port->type_eth.ifname, netdev->name);
1170 case DEVLINK_PORT_TYPE_IB:
1171 devlink_port->type_ib.ibdev = type_dev;
1176 spin_unlock_bh(&devlink_port->type_lock);
1177 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1181 * devlink_port_type_eth_set - Set port type to Ethernet
1183 * @devlink_port: devlink port
1185 * If driver is calling this, most likely it is doing something wrong.
1187 void devlink_port_type_eth_set(struct devlink_port *devlink_port)
1189 dev_warn(devlink_port->devlink->dev,
1190 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
1191 devlink_port->index);
1192 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
1194 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
1197 * devlink_port_type_ib_set - Set port type to InfiniBand
1199 * @devlink_port: devlink port
1200 * @ibdev: related IB device
1202 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
1203 struct ib_device *ibdev)
1205 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
1207 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
1210 * devlink_port_type_clear - Clear port type
1212 * @devlink_port: devlink port
1214 * If driver is calling this for clearing Ethernet type, most likely
1215 * it is doing something wrong.
1217 void devlink_port_type_clear(struct devlink_port *devlink_port)
1219 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
1220 dev_warn(devlink_port->devlink->dev,
1221 "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
1222 devlink_port->index);
1223 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
1225 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
1227 int devlink_port_netdevice_event(struct notifier_block *nb,
1228 unsigned long event, void *ptr)
1230 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
1231 struct devlink_port *devlink_port = netdev->devlink_port;
1232 struct devlink *devlink;
1236 devlink = devlink_port->devlink;
1239 case NETDEV_POST_INIT:
1240 /* Set the type but not netdev pointer. It is going to be set
1241 * later on by NETDEV_REGISTER event. Happens once during
1242 * netdevice register
1244 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
1247 case NETDEV_REGISTER:
1248 case NETDEV_CHANGENAME:
1249 if (devlink_net(devlink) != dev_net(netdev))
1251 /* Set the netdev on top of previously set type. Note this
1252 * event happens also during net namespace change so here
1253 * we take into account netdev pointer appearing in this
1256 __devlink_port_type_set(devlink_port, devlink_port->type,
1259 case NETDEV_UNREGISTER:
1260 if (devlink_net(devlink) != dev_net(netdev))
1262 /* Clear netdev pointer, but not the type. This event happens
1263 * also during net namespace change so we need to clear
1264 * pointer to netdev that is going to another net namespace.
1266 __devlink_port_type_set(devlink_port, devlink_port->type,
1269 case NETDEV_PRE_UNINIT:
1270 /* Clear the type and the netdev pointer. Happens one during
1271 * netdevice unregister.
1273 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
1281 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
1282 enum devlink_port_flavour flavour)
1284 struct devlink_port_attrs *attrs = &devlink_port->attrs;
1286 devlink_port->attrs_set = true;
1287 attrs->flavour = flavour;
1288 if (attrs->switch_id.id_len) {
1289 devlink_port->switch_port = true;
1290 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
1291 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
1293 devlink_port->switch_port = false;
1299 * devlink_port_attrs_set - Set port attributes
1301 * @devlink_port: devlink port
1302 * @attrs: devlink port attrs
1304 void devlink_port_attrs_set(struct devlink_port *devlink_port,
1305 struct devlink_port_attrs *attrs)
1309 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1311 devlink_port->attrs = *attrs;
1312 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
1315 WARN_ON(attrs->splittable && attrs->split);
1317 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
1320 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
1322 * @devlink_port: devlink port
1323 * @controller: associated controller number for the devlink port instance
1324 * @pf: associated PF for the devlink port instance
1325 * @external: indicates if the port is for an external controller
1327 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
1328 u16 pf, bool external)
1330 struct devlink_port_attrs *attrs = &devlink_port->attrs;
1333 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1335 ret = __devlink_port_attrs_set(devlink_port,
1336 DEVLINK_PORT_FLAVOUR_PCI_PF);
1339 attrs->pci_pf.controller = controller;
1340 attrs->pci_pf.pf = pf;
1341 attrs->pci_pf.external = external;
1343 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
1346 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
1348 * @devlink_port: devlink port
1349 * @controller: associated controller number for the devlink port instance
1350 * @pf: associated PF for the devlink port instance
1351 * @vf: associated VF of a PF for the devlink port instance
1352 * @external: indicates if the port is for an external controller
1354 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
1355 u16 pf, u16 vf, bool external)
1357 struct devlink_port_attrs *attrs = &devlink_port->attrs;
1360 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1362 ret = __devlink_port_attrs_set(devlink_port,
1363 DEVLINK_PORT_FLAVOUR_PCI_VF);
1366 attrs->pci_vf.controller = controller;
1367 attrs->pci_vf.pf = pf;
1368 attrs->pci_vf.vf = vf;
1369 attrs->pci_vf.external = external;
1371 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
1374 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
1376 * @devlink_port: devlink port
1377 * @controller: associated controller number for the devlink port instance
1378 * @pf: associated PF for the devlink port instance
1379 * @sf: associated SF of a PF for the devlink port instance
1380 * @external: indicates if the port is for an external controller
1382 void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
1383 u16 pf, u32 sf, bool external)
1385 struct devlink_port_attrs *attrs = &devlink_port->attrs;
1388 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1390 ret = __devlink_port_attrs_set(devlink_port,
1391 DEVLINK_PORT_FLAVOUR_PCI_SF);
1394 attrs->pci_sf.controller = controller;
1395 attrs->pci_sf.pf = pf;
1396 attrs->pci_sf.sf = sf;
1397 attrs->pci_sf.external = external;
1399 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
1401 static void devlink_port_rel_notify_cb(struct devlink *devlink, u32 port_index)
1403 struct devlink_port *devlink_port;
1405 devlink_port = devlink_port_get_by_index(devlink, port_index);
1408 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1411 static void devlink_port_rel_cleanup_cb(struct devlink *devlink, u32 port_index,
1414 struct devlink_port *devlink_port;
1416 devlink_port = devlink_port_get_by_index(devlink, port_index);
1417 if (devlink_port && devlink_port->rel_index == rel_index)
1418 devlink_port->rel_index = 0;
1422 * devl_port_fn_devlink_set - Attach peer devlink
1423 * instance to port function.
1424 * @devlink_port: devlink port
1425 * @fn_devlink: devlink instance to attach
1427 int devl_port_fn_devlink_set(struct devlink_port *devlink_port,
1428 struct devlink *fn_devlink)
1430 ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
1432 if (WARN_ON(devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_SF ||
1433 devlink_port->attrs.pci_sf.external))
1436 return devlink_rel_nested_in_add(&devlink_port->rel_index,
1437 devlink_port->devlink->index,
1438 devlink_port->index,
1439 devlink_port_rel_notify_cb,
1440 devlink_port_rel_cleanup_cb,
1443 EXPORT_SYMBOL_GPL(devl_port_fn_devlink_set);
1446 * devlink_port_linecard_set - Link port with a linecard
1448 * @devlink_port: devlink port
1449 * @linecard: devlink linecard
1451 void devlink_port_linecard_set(struct devlink_port *devlink_port,
1452 struct devlink_linecard *linecard)
1454 ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
1456 devlink_port->linecard = linecard;
1458 EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
1460 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
1461 char *name, size_t len)
1463 struct devlink_port_attrs *attrs = &devlink_port->attrs;
1466 if (!devlink_port->attrs_set)
1469 switch (attrs->flavour) {
1470 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
1471 if (devlink_port->linecard)
1472 n = snprintf(name, len, "l%u",
1473 devlink_linecard_index(devlink_port->linecard));
1475 n += snprintf(name + n, len - n, "p%u",
1476 attrs->phys.port_number);
1477 if (n < len && attrs->split)
1478 n += snprintf(name + n, len - n, "s%u",
1479 attrs->phys.split_subport_number);
1481 case DEVLINK_PORT_FLAVOUR_CPU:
1482 case DEVLINK_PORT_FLAVOUR_DSA:
1483 case DEVLINK_PORT_FLAVOUR_UNUSED:
1484 /* As CPU and DSA ports do not have a netdevice associated
1485 * case should not ever happen.
1489 case DEVLINK_PORT_FLAVOUR_PCI_PF:
1490 if (attrs->pci_pf.external) {
1491 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
1497 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
1499 case DEVLINK_PORT_FLAVOUR_PCI_VF:
1500 if (attrs->pci_vf.external) {
1501 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
1507 n = snprintf(name, len, "pf%uvf%u",
1508 attrs->pci_vf.pf, attrs->pci_vf.vf);
1510 case DEVLINK_PORT_FLAVOUR_PCI_SF:
1511 if (attrs->pci_sf.external) {
1512 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
1518 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
1521 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
1531 int devlink_compat_phys_port_name_get(struct net_device *dev,
1532 char *name, size_t len)
1534 struct devlink_port *devlink_port;
1536 /* RTNL mutex is held here which ensures that devlink_port
1537 * instance cannot disappear in the middle. No need to take
1538 * any devlink lock as only permanent values are accessed.
1542 devlink_port = dev->devlink_port;
1546 return __devlink_port_phys_port_name_get(devlink_port, name, len);
1549 int devlink_compat_switch_id_get(struct net_device *dev,
1550 struct netdev_phys_item_id *ppid)
1552 struct devlink_port *devlink_port;
1554 /* Caller must hold RTNL mutex or reference to dev, which ensures that
1555 * devlink_port instance cannot disappear in the middle. No need to take
1556 * any devlink lock as only permanent values are accessed.
1558 devlink_port = dev->devlink_port;
1559 if (!devlink_port || !devlink_port->switch_port)
1562 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));