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Date: Fri, 25 Aug 2023 10:53:08 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org,
pabeni@...hat.com,
davem@...emloft.net,
edumazet@...gle.com,
moshe@...dia.com
Subject: [patch net-next 02/15] devlink: push port related code into separate file
From: Jiri Pirko <jiri@...dia.com>
Cut out another chunk from leftover.c and put port related code
into a separate file.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
net/devlink/Makefile | 2 +-
net/devlink/devl_internal.h | 32 +-
net/devlink/leftover.c | 1446 +----------------------------------
net/devlink/port.c | 1411 ++++++++++++++++++++++++++++++++++
4 files changed, 1454 insertions(+), 1437 deletions(-)
create mode 100644 net/devlink/port.c
diff --git a/net/devlink/Makefile b/net/devlink/Makefile
index a087af581847..456bfb336540 100644
--- a/net/devlink/Makefile
+++ b/net/devlink/Makefile
@@ -1,3 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
-obj-y := leftover.o core.o netlink.o netlink_gen.o dev.o health.o
+obj-y := leftover.o core.o netlink.o netlink_gen.o dev.o port.o health.o
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index eb1d5066c73f..7d01e2060702 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -3,6 +3,7 @@
* Copyright (c) 2016 Jiri Pirko <jiri@...lanox.com>
*/
+#include <linux/etherdevice.h>
#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/notifier.h>
@@ -11,6 +12,8 @@
#include <linux/xarray.h>
#include <net/devlink.h>
#include <net/net_namespace.h>
+#include <net/rtnetlink.h>
+#include <rdma/ib_verbs.h>
#include "netlink_gen.h"
@@ -149,16 +152,37 @@ devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
/* Notify */
void devlink_notify(struct devlink *devlink, enum devlink_command cmd);
+void devlink_ports_notify_register(struct devlink *devlink);
+void devlink_ports_notify_unregister(struct devlink *devlink);
/* Ports */
+#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->initialized)
+
+struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
+ unsigned int port_index);
int devlink_port_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr);
-
struct devlink_port *
devlink_port_get_from_info(struct devlink *devlink, struct genl_info *info);
struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
struct nlattr **attrs);
+/* Linecards */
+struct devlink_linecard {
+ struct list_head list;
+ struct devlink *devlink;
+ unsigned int index;
+ const struct devlink_linecard_ops *ops;
+ void *priv;
+ enum devlink_linecard_state state;
+ struct mutex state_lock; /* Protects state */
+ const char *type;
+ struct devlink_linecard_type *types;
+ unsigned int types_count;
+ struct devlink *nested_devlink;
+};
+
/* Reload */
bool devlink_reload_actions_valid(const struct devlink_ops *ops);
int devlink_reload(struct devlink *devlink, struct net *dest_net,
@@ -190,6 +214,12 @@ int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, struct genl_info *info)
int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb, struct genl_info *info);
int devlink_nl_cmd_flash_update(struct sk_buff *skb, struct genl_info *info);
int devlink_nl_cmd_selftests_run(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
+ struct genl_info *info);
+int devlink_nl_cmd_port_new_doit(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_port_del_doit(struct sk_buff *skb, struct genl_info *info);
int devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
struct genl_info *info);
int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index a134dddf2632..d14b40fb8fdf 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -33,20 +33,6 @@
#include "devl_internal.h"
-struct devlink_linecard {
- struct list_head list;
- struct devlink *devlink;
- unsigned int index;
- const struct devlink_linecard_ops *ops;
- void *priv;
- enum devlink_linecard_state state;
- struct mutex state_lock; /* Protects state */
- const char *type;
- struct devlink_linecard_type *types;
- unsigned int types_count;
- struct devlink *nested_devlink;
-};
-
/**
* struct devlink_resource - devlink resource
* @name: name of the resource
@@ -131,52 +117,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
-#define DEVLINK_PORT_FN_CAPS_VALID_MASK \
- (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1)
-
-static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
- [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
- [DEVLINK_PORT_FN_ATTR_STATE] =
- NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
- DEVLINK_PORT_FN_STATE_ACTIVE),
- [DEVLINK_PORT_FN_ATTR_CAPS] =
- NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK),
-};
-
-#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
- WARN_ON_ONCE((devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->initialized)
-
-static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
- unsigned int port_index)
-{
- return xa_load(&devlink->ports, port_index);
-}
-
-struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
- u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_by_index(devlink, port_index);
- if (!devlink_port)
- return ERR_PTR(-ENODEV);
- return devlink_port;
- }
- return ERR_PTR(-EINVAL);
-}
-
-struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_port_get_from_attrs(devlink, info->attrs);
-}
-
static inline bool
devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
{
@@ -439,86 +379,6 @@ devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
return 0;
}
-static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps,
- u32 cap, bool is_enable)
-{
- caps->selector |= cap;
- if (is_enable)
- caps->value |= cap;
-}
-
-static int devlink_port_fn_roce_fill(struct devlink_port *devlink_port,
- struct nla_bitfield32 *caps,
- struct netlink_ext_ack *extack)
-{
- bool is_enable;
- int err;
-
- if (!devlink_port->ops->port_fn_roce_get)
- return 0;
-
- err = devlink_port->ops->port_fn_roce_get(devlink_port, &is_enable,
- extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
-
- devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable);
- return 0;
-}
-
-static int devlink_port_fn_migratable_fill(struct devlink_port *devlink_port,
- struct nla_bitfield32 *caps,
- struct netlink_ext_ack *extack)
-{
- bool is_enable;
- int err;
-
- if (!devlink_port->ops->port_fn_migratable_get ||
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
- return 0;
-
- err = devlink_port->ops->port_fn_migratable_get(devlink_port,
- &is_enable, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
-
- devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable);
- return 0;
-}
-
-static int devlink_port_fn_caps_fill(struct devlink_port *devlink_port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- struct nla_bitfield32 caps = {};
- int err;
-
- err = devlink_port_fn_roce_fill(devlink_port, &caps, extack);
- if (err)
- return err;
-
- err = devlink_port_fn_migratable_fill(devlink_port, &caps, extack);
- if (err)
- return err;
-
- if (!caps.selector)
- return 0;
- err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value,
- caps.selector);
- if (err)
- return err;
-
- *msg_updated = true;
- return 0;
-}
-
static int
devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
struct genl_info *info,
@@ -609,113 +469,6 @@ static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *dev
return -EMSGSIZE;
}
-int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
-{
- if (devlink_nl_put_handle(msg, devlink_port->devlink))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- return -EMSGSIZE;
- return 0;
-}
-
-size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
-{
- struct devlink *devlink = devlink_port->devlink;
-
- return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
- + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
- + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
-}
-
-static int devlink_nl_port_attrs_put(struct sk_buff *msg,
- struct devlink_port *devlink_port)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- if (!devlink_port->attrs_set)
- return 0;
- if (attrs->lanes) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
- return -EMSGSIZE;
- }
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
- return -EMSGSIZE;
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
- return -EMSGSIZE;
- switch (devlink_port->attrs.flavour) {
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_pf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_vf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_sf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
- attrs->pci_sf.pf) ||
- nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
- attrs->pci_sf.sf))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (!attrs->split)
- return 0;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
- attrs->phys.split_subport_number))
- return -EMSGSIZE;
- break;
- default:
- break;
- }
- return 0;
-}
-
-static int devlink_port_fn_hw_addr_fill(struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- u8 hw_addr[MAX_ADDR_LEN];
- int hw_addr_len;
- int err;
-
- if (!port->ops->port_fn_hw_addr_get)
- return 0;
-
- err = port->ops->port_fn_hw_addr_get(port, hw_addr, &hw_addr_len,
- extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
- if (err)
- return err;
- *msg_updated = true;
- return 0;
-}
-
static int devlink_nl_rate_fill(struct sk_buff *msg,
struct devlink_rate *devlink_rate,
enum devlink_command cmd, u32 portid, u32 seq,
@@ -773,231 +526,6 @@ static int devlink_nl_rate_fill(struct sk_buff *msg,
return -EMSGSIZE;
}
-static bool
-devlink_port_fn_state_valid(enum devlink_port_fn_state state)
-{
- return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
- state == DEVLINK_PORT_FN_STATE_ACTIVE;
-}
-
-static bool
-devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
-{
- return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
- opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
-}
-
-static int devlink_port_fn_state_fill(struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- enum devlink_port_fn_opstate opstate;
- enum devlink_port_fn_state state;
- int err;
-
- if (!port->ops->port_fn_state_get)
- return 0;
-
- err = port->ops->port_fn_state_get(port, &state, &opstate, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- if (!devlink_port_fn_state_valid(state)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG(extack, "Invalid state read from driver");
- return -EINVAL;
- }
- if (!devlink_port_fn_opstate_valid(opstate)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG(extack, "Invalid operational state read from driver");
- return -EINVAL;
- }
- if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
- nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
- return -EMSGSIZE;
- *msg_updated = true;
- return 0;
-}
-
-static int
-devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable,
- struct netlink_ext_ack *extack)
-{
- return devlink_port->ops->port_fn_migratable_set(devlink_port, enable,
- extack);
-}
-
-static int
-devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable,
- struct netlink_ext_ack *extack)
-{
- return devlink_port->ops->port_fn_roce_set(devlink_port, enable,
- extack);
-}
-
-static int devlink_port_fn_caps_set(struct devlink_port *devlink_port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct nla_bitfield32 caps;
- u32 caps_value;
- int err;
-
- caps = nla_get_bitfield32(attr);
- caps_value = caps.value & caps.selector;
- if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) {
- err = devlink_port_fn_roce_set(devlink_port,
- caps_value & DEVLINK_PORT_FN_CAP_ROCE,
- extack);
- if (err)
- return err;
- }
- if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
- err = devlink_port_fn_mig_set(devlink_port, caps_value &
- DEVLINK_PORT_FN_CAP_MIGRATABLE,
- extack);
- if (err)
- return err;
- }
- return 0;
-}
-
-static int
-devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *function_attr;
- bool msg_updated = false;
- int err;
-
- function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
- if (!function_attr)
- return -EMSGSIZE;
-
- err = devlink_port_fn_hw_addr_fill(port, msg, extack, &msg_updated);
- if (err)
- goto out;
- err = devlink_port_fn_caps_fill(port, msg, extack, &msg_updated);
- if (err)
- goto out;
- err = devlink_port_fn_state_fill(port, msg, extack, &msg_updated);
-out:
- if (err || !msg_updated)
- nla_nest_cancel(msg, function_attr);
- else
- nla_nest_end(msg, function_attr);
- return err;
-}
-
-static int devlink_nl_port_fill(struct sk_buff *msg,
- struct devlink_port *devlink_port,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_port->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
-
- spin_lock_bh(&devlink_port->type_lock);
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
- goto nla_put_failure_type_locked;
- if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
- nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
- devlink_port->desired_type))
- goto nla_put_failure_type_locked;
- if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
- if (devlink_port->type_eth.netdev &&
- (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
- devlink_port->type_eth.ifindex) ||
- nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
- devlink_port->type_eth.ifname)))
- goto nla_put_failure_type_locked;
- }
- if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
- struct ib_device *ibdev = devlink_port->type_ib.ibdev;
-
- if (ibdev &&
- nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
- ibdev->name))
- goto nla_put_failure_type_locked;
- }
- spin_unlock_bh(&devlink_port->type_lock);
- if (devlink_nl_port_attrs_put(msg, devlink_port))
- goto nla_put_failure;
- if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
- goto nla_put_failure;
- if (devlink_port->linecard &&
- nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
- devlink_port->linecard->index))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure_type_locked:
- spin_unlock_bh(&devlink_port->type_lock);
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_port_notify(struct devlink_port *devlink_port,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static void devlink_ports_notify(struct devlink *devlink,
- enum devlink_command cmd)
-{
- struct devlink_port *devlink_port;
- unsigned long port_index;
-
- xa_for_each(&devlink->ports, port_index, devlink_port)
- devlink_port_notify(devlink_port, cmd);
-}
-
-static void devlink_ports_notify_register(struct devlink *devlink)
-{
- devlink_ports_notify(devlink, DEVLINK_CMD_PORT_NEW);
-}
-
-static void devlink_ports_notify_unregister(struct devlink *devlink)
-{
- devlink_ports_notify(devlink, DEVLINK_CMD_PORT_DEL);
-}
-
static void devlink_rate_notify(struct devlink_rate *devlink_rate,
enum devlink_command cmd)
{
@@ -1096,367 +624,20 @@ int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info)
nlmsg_free(msg);
return err;
}
-
- return genlmsg_reply(msg, info);
-}
-
-static bool
-devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
- struct devlink_rate *parent)
-{
- while (parent) {
- if (parent == devlink_rate)
- return true;
- parent = parent->parent;
- }
- return false;
-}
-
-int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int
-devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
- struct netlink_callback *cb, int flags)
-{
- struct devlink_nl_dump_state *state = devlink_dump_state(cb);
- struct devlink_port *devlink_port;
- unsigned long port_index;
- int err = 0;
-
- xa_for_each_start(&devlink->ports, port_index, devlink_port, state->idx) {
- err = devlink_nl_port_fill(msg, devlink_port,
- DEVLINK_CMD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, flags,
- cb->extack);
- if (err) {
- state->idx = port_index;
- break;
- }
- }
-
- return err;
-}
-
-int devlink_nl_port_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
-{
- return devlink_nl_dumpit(skb, cb, devlink_nl_port_get_dump_one);
-}
-
-static int devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type port_type)
-
-{
- int err;
-
- if (!devlink_port->ops->port_type_set)
- return -EOPNOTSUPP;
-
- if (port_type == devlink_port->type)
- return 0;
-
- err = devlink_port->ops->port_type_set(devlink_port, port_type);
- if (err)
- return err;
-
- devlink_port->desired_type = port_type;
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-
-static int devlink_port_function_hw_addr_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- const u8 *hw_addr;
- int hw_addr_len;
-
- hw_addr = nla_data(attr);
- hw_addr_len = nla_len(attr);
- if (hw_addr_len > MAX_ADDR_LEN) {
- NL_SET_ERR_MSG(extack, "Port function hardware address too long");
- return -EINVAL;
- }
- if (port->type == DEVLINK_PORT_TYPE_ETH) {
- if (hw_addr_len != ETH_ALEN) {
- NL_SET_ERR_MSG(extack, "Address must be 6 bytes for Ethernet device");
- return -EINVAL;
- }
- if (!is_unicast_ether_addr(hw_addr)) {
- NL_SET_ERR_MSG(extack, "Non-unicast hardware address unsupported");
- return -EINVAL;
- }
- }
-
- return port->ops->port_fn_hw_addr_set(port, hw_addr, hw_addr_len,
- extack);
-}
-
-static int devlink_port_fn_state_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- enum devlink_port_fn_state state;
-
- state = nla_get_u8(attr);
- return port->ops->port_fn_state_set(port, state, extack);
-}
-
-static int devlink_port_function_validate(struct devlink_port *devlink_port,
- struct nlattr **tb,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_port_ops *ops = devlink_port->ops;
- struct nlattr *attr;
-
- if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] &&
- !ops->port_fn_hw_addr_set) {
- NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
- "Port doesn't support function attributes");
- return -EOPNOTSUPP;
- }
- if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) {
- NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
- "Function does not support state setting");
- return -EOPNOTSUPP;
- }
- attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
- if (attr) {
- struct nla_bitfield32 caps;
-
- caps = nla_get_bitfield32(attr);
- if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE &&
- !ops->port_fn_roce_set) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "Port doesn't support RoCE function attribute");
- return -EOPNOTSUPP;
- }
- if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
- if (!ops->port_fn_migratable_set) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "Port doesn't support migratable function attribute");
- return -EOPNOTSUPP;
- }
- if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
- NL_SET_ERR_MSG_ATTR(extack, attr,
- "migratable function attribute supported for VFs only");
- return -EOPNOTSUPP;
- }
- }
- }
- return 0;
-}
-
-static int devlink_port_function_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
- int err;
-
- err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
- devlink_function_nl_policy, extack);
- if (err < 0) {
- NL_SET_ERR_MSG(extack, "Fail to parse port function attributes");
- return err;
- }
-
- err = devlink_port_function_validate(port, tb, extack);
- if (err)
- return err;
-
- attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
- if (attr) {
- err = devlink_port_function_hw_addr_set(port, attr, extack);
- if (err)
- return err;
- }
-
- attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
- if (attr) {
- err = devlink_port_fn_caps_set(port, attr, extack);
- if (err)
- return err;
- }
-
- /* Keep this as the last function attribute set, so that when
- * multiple port function attributes are set along with state,
- * Those can be applied first before activating the state.
- */
- attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
- if (attr)
- err = devlink_port_fn_state_set(port, attr, extack);
-
- if (!err)
- devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- int err;
-
- if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
- enum devlink_port_type port_type;
-
- port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
- err = devlink_port_type_set(devlink_port, port_type);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
- struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
- struct netlink_ext_ack *extack = info->extack;
-
- err = devlink_port_function_set(devlink_port, attr, extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- u32 count;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
- return -EINVAL;
- if (!devlink_port->ops->port_split)
- return -EOPNOTSUPP;
-
- count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
-
- if (!devlink_port->attrs.splittable) {
- /* Split ports cannot be split. */
- if (devlink_port->attrs.split)
- NL_SET_ERR_MSG(info->extack, "Port cannot be split further");
- else
- NL_SET_ERR_MSG(info->extack, "Port cannot be split");
- return -EINVAL;
- }
-
- if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
- NL_SET_ERR_MSG(info->extack, "Invalid split count");
- return -EINVAL;
- }
-
- return devlink_port->ops->port_split(devlink, devlink_port, count,
- info->extack);
-}
-
-static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink_port->ops->port_unsplit)
- return -EOPNOTSUPP;
- return devlink_port->ops->port_unsplit(devlink, devlink_port, info->extack);
-}
-
-static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink_port_new_attrs new_attrs = {};
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_port *devlink_port;
- struct sk_buff *msg;
- int err;
-
- if (!devlink->ops->port_new)
- return -EOPNOTSUPP;
-
- if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
- !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
- NL_SET_ERR_MSG(extack, "Port flavour or PCI PF are not specified");
- return -EINVAL;
- }
- new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
- new_attrs.pfnum =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- /* Port index of the new port being created by driver. */
- new_attrs.port_index =
- nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
- new_attrs.port_index_valid = true;
- }
- if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
- new_attrs.controller =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
- new_attrs.controller_valid = true;
- }
- if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
- info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
- new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
- new_attrs.sfnum_valid = true;
- }
-
- err = devlink->ops->port_new(devlink, &new_attrs,
- extack, &devlink_port);
- if (err)
- return err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto err_out_port_del;
- }
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
- info->snd_portid, info->snd_seq, 0, NULL);
- if (WARN_ON_ONCE(err))
- goto err_out_msg_free;
- err = genlmsg_reply(msg, info);
- if (err)
- goto err_out_port_del;
- return 0;
-
-err_out_msg_free:
- nlmsg_free(msg);
-err_out_port_del:
- devlink_port->ops->port_del(devlink, devlink_port, NULL);
- return err;
+
+ return genlmsg_reply(msg, info);
}
-static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
- struct genl_info *info)
+static bool
+devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
+ struct devlink_rate *parent)
{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink_port->ops->port_del)
- return -EOPNOTSUPP;
-
- return devlink_port->ops->port_del(devlink, devlink_port, extack);
+ while (parent) {
+ if (parent == devlink_rate)
+ return true;
+ parent = parent->parent;
+ }
+ return false;
}
static int
@@ -6679,489 +5860,6 @@ void devlink_notify_unregister(struct devlink *devlink)
devlink_notify(devlink, DEVLINK_CMD_DEL);
}
-static void devlink_port_type_warn(struct work_struct *work)
-{
- struct devlink_port *port = container_of(to_delayed_work(work),
- struct devlink_port,
- type_warn_dw);
- dev_warn(port->devlink->dev, "Type was not set for devlink port.");
-}
-
-static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
-{
- /* Ignore CPU and DSA flavours. */
- return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
-}
-
-#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
-
-static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- /* Schedule a work to WARN in case driver does not set port
- * type within timeout.
- */
- schedule_delayed_work(&devlink_port->type_warn_dw,
- DEVLINK_PORT_TYPE_WARN_TIMEOUT);
-}
-
-static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- cancel_delayed_work_sync(&devlink_port->type_warn_dw);
-}
-
-/**
- * devlink_port_init() - Init devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- *
- * Initialize essential stuff that is needed for functions
- * that may be called before devlink port registration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_init(struct devlink *devlink,
- struct devlink_port *devlink_port)
-{
- if (devlink_port->initialized)
- return;
- devlink_port->devlink = devlink;
- INIT_LIST_HEAD(&devlink_port->region_list);
- devlink_port->initialized = true;
-}
-EXPORT_SYMBOL_GPL(devlink_port_init);
-
-/**
- * devlink_port_fini() - Deinitialize devlink port
- *
- * @devlink_port: devlink port
- *
- * Deinitialize essential stuff that is in use for functions
- * that may be called after devlink port unregistration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_fini(struct devlink_port *devlink_port)
-{
- WARN_ON(!list_empty(&devlink_port->region_list));
-}
-EXPORT_SYMBOL_GPL(devlink_port_fini);
-
-static const struct devlink_port_ops devlink_port_dummy_ops = {};
-
-/**
- * devl_port_register_with_ops() - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- * @ops: port ops
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- */
-int devl_port_register_with_ops(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index,
- const struct devlink_port_ops *ops)
-{
- int err;
-
- devl_assert_locked(devlink);
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port_init(devlink, devlink_port);
- devlink_port->registered = true;
- devlink_port->index = port_index;
- devlink_port->ops = ops ? ops : &devlink_port_dummy_ops;
- spin_lock_init(&devlink_port->type_lock);
- INIT_LIST_HEAD(&devlink_port->reporter_list);
- err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
- if (err) {
- devlink_port->registered = false;
- return err;
- }
-
- INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
- devlink_port_type_warn_schedule(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_port_register_with_ops);
-
-/**
- * devlink_port_register_with_ops - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- * @ops: port ops
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-int devlink_port_register_with_ops(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index,
- const struct devlink_port_ops *ops)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_port_register_with_ops(devlink, devlink_port,
- port_index, ops);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_port_register_with_ops);
-
-/**
- * devl_port_unregister() - Unregister devlink port
- *
- * @devlink_port: devlink port
- */
-void devl_port_unregister(struct devlink_port *devlink_port)
-{
- lockdep_assert_held(&devlink_port->devlink->lock);
- WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
-
- devlink_port_type_warn_cancel(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
- xa_erase(&devlink_port->devlink->ports, devlink_port->index);
- WARN_ON(!list_empty(&devlink_port->reporter_list));
- devlink_port->registered = false;
-}
-EXPORT_SYMBOL_GPL(devl_port_unregister);
-
-/**
- * devlink_port_unregister - Unregister devlink port
- *
- * @devlink_port: devlink port
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_port_unregister(struct devlink_port *devlink_port)
-{
- struct devlink *devlink = devlink_port->devlink;
-
- devl_lock(devlink);
- devl_port_unregister(devlink_port);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_port_unregister);
-
-static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
- struct net_device *netdev)
-{
- const struct net_device_ops *ops = netdev->netdev_ops;
-
- /* If driver registers devlink port, it should set devlink port
- * attributes accordingly so the compat functions are called
- * and the original ops are not used.
- */
- if (ops->ndo_get_phys_port_name) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_phys_port_name
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- char name[IFNAMSIZ];
- int err;
-
- err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
- WARN_ON(err != -EOPNOTSUPP);
- }
- if (ops->ndo_get_port_parent_id) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_port_parent_id
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- struct netdev_phys_item_id ppid;
- int err;
-
- err = ops->ndo_get_port_parent_id(netdev, &ppid);
- WARN_ON(err != -EOPNOTSUPP);
- }
-}
-
-static void __devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type type,
- void *type_dev)
-{
- struct net_device *netdev = type_dev;
-
- ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
-
- if (type == DEVLINK_PORT_TYPE_NOTSET) {
- devlink_port_type_warn_schedule(devlink_port);
- } else {
- devlink_port_type_warn_cancel(devlink_port);
- if (type == DEVLINK_PORT_TYPE_ETH && netdev)
- devlink_port_type_netdev_checks(devlink_port, netdev);
- }
-
- spin_lock_bh(&devlink_port->type_lock);
- devlink_port->type = type;
- switch (type) {
- case DEVLINK_PORT_TYPE_ETH:
- devlink_port->type_eth.netdev = netdev;
- if (netdev) {
- ASSERT_RTNL();
- devlink_port->type_eth.ifindex = netdev->ifindex;
- BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
- sizeof(netdev->name));
- strcpy(devlink_port->type_eth.ifname, netdev->name);
- }
- break;
- case DEVLINK_PORT_TYPE_IB:
- devlink_port->type_ib.ibdev = type_dev;
- break;
- default:
- break;
- }
- spin_unlock_bh(&devlink_port->type_lock);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-}
-
-/**
- * devlink_port_type_eth_set - Set port type to Ethernet
- *
- * @devlink_port: devlink port
- *
- * If driver is calling this, most likely it is doing something wrong.
- */
-void devlink_port_type_eth_set(struct devlink_port *devlink_port)
-{
- dev_warn(devlink_port->devlink->dev,
- "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
- devlink_port->index);
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
-
-/**
- * devlink_port_type_ib_set - Set port type to InfiniBand
- *
- * @devlink_port: devlink port
- * @ibdev: related IB device
- */
-void devlink_port_type_ib_set(struct devlink_port *devlink_port,
- struct ib_device *ibdev)
-{
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
-
-/**
- * devlink_port_type_clear - Clear port type
- *
- * @devlink_port: devlink port
- *
- * If driver is calling this for clearing Ethernet type, most likely
- * it is doing something wrong.
- */
-void devlink_port_type_clear(struct devlink_port *devlink_port)
-{
- if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
- dev_warn(devlink_port->devlink->dev,
- "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
- devlink_port->index);
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_clear);
-
-int devlink_port_netdevice_event(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
- struct devlink_port *devlink_port = netdev->devlink_port;
- struct devlink *devlink;
-
- if (!devlink_port)
- return NOTIFY_OK;
- devlink = devlink_port->devlink;
-
- switch (event) {
- case NETDEV_POST_INIT:
- /* Set the type but not netdev pointer. It is going to be set
- * later on by NETDEV_REGISTER event. Happens once during
- * netdevice register
- */
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
- NULL);
- break;
- case NETDEV_REGISTER:
- case NETDEV_CHANGENAME:
- if (devlink_net(devlink) != dev_net(netdev))
- return NOTIFY_OK;
- /* Set the netdev on top of previously set type. Note this
- * event happens also during net namespace change so here
- * we take into account netdev pointer appearing in this
- * namespace.
- */
- __devlink_port_type_set(devlink_port, devlink_port->type,
- netdev);
- break;
- case NETDEV_UNREGISTER:
- if (devlink_net(devlink) != dev_net(netdev))
- return NOTIFY_OK;
- /* Clear netdev pointer, but not the type. This event happens
- * also during net namespace change so we need to clear
- * pointer to netdev that is going to another net namespace.
- */
- __devlink_port_type_set(devlink_port, devlink_port->type,
- NULL);
- break;
- case NETDEV_PRE_UNINIT:
- /* Clear the type and the netdev pointer. Happens one during
- * netdevice unregister.
- */
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
- NULL);
- break;
- }
-
- return NOTIFY_OK;
-}
-
-static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
- enum devlink_port_flavour flavour)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- devlink_port->attrs_set = true;
- attrs->flavour = flavour;
- if (attrs->switch_id.id_len) {
- devlink_port->switch_port = true;
- if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
- attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
- } else {
- devlink_port->switch_port = false;
- }
- return 0;
-}
-
-/**
- * devlink_port_attrs_set - Set port attributes
- *
- * @devlink_port: devlink port
- * @attrs: devlink port attrs
- */
-void devlink_port_attrs_set(struct devlink_port *devlink_port,
- struct devlink_port_attrs *attrs)
-{
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->attrs = *attrs;
- ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
- if (ret)
- return;
- WARN_ON(attrs->splittable && attrs->split);
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
-
-/**
- * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_PF);
- if (ret)
- return;
- attrs->pci_pf.controller = controller;
- attrs->pci_pf.pf = pf;
- attrs->pci_pf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
-
-/**
- * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @vf: associated VF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u16 vf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_VF);
- if (ret)
- return;
- attrs->pci_vf.controller = controller;
- attrs->pci_vf.pf = pf;
- attrs->pci_vf.vf = vf;
- attrs->pci_vf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
-
-/**
- * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @sf: associated SF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u32 sf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_SF);
- if (ret)
- return;
- attrs->pci_sf.controller = controller;
- attrs->pci_sf.pf = pf;
- attrs->pci_sf.sf = sf;
- attrs->pci_sf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
-
/**
* devl_rate_node_create - create devlink rate node
* @devlink: devlink instance
@@ -7308,92 +6006,6 @@ void devl_rate_nodes_destroy(struct devlink *devlink)
}
EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
-/**
- * devlink_port_linecard_set - Link port with a linecard
- *
- * @devlink_port: devlink port
- * @linecard: devlink linecard
- */
-void devlink_port_linecard_set(struct devlink_port *devlink_port,
- struct devlink_linecard *linecard)
-{
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->linecard = linecard;
-}
-EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
-
-static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
- char *name, size_t len)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int n = 0;
-
- if (!devlink_port->attrs_set)
- return -EOPNOTSUPP;
-
- switch (attrs->flavour) {
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- if (devlink_port->linecard)
- n = snprintf(name, len, "l%u",
- devlink_port->linecard->index);
- if (n < len)
- n += snprintf(name + n, len - n, "p%u",
- attrs->phys.port_number);
- if (n < len && attrs->split)
- n += snprintf(name + n, len - n, "s%u",
- attrs->phys.split_subport_number);
- break;
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- case DEVLINK_PORT_FLAVOUR_UNUSED:
- /* As CPU and DSA ports do not have a netdevice associated
- * case should not ever happen.
- */
- WARN_ON(1);
- return -EINVAL;
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (attrs->pci_pf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (attrs->pci_vf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%uvf%u",
- attrs->pci_vf.pf, attrs->pci_vf.vf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (attrs->pci_sf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
- attrs->pci_sf.sf);
- break;
- case DEVLINK_PORT_FLAVOUR_VIRTUAL:
- return -EOPNOTSUPP;
- }
-
- if (n >= len)
- return -EINVAL;
-
- return 0;
-}
-
static int devlink_linecard_types_init(struct devlink_linecard *linecard)
{
struct devlink_linecard_type *linecard_type;
@@ -9468,39 +8080,3 @@ devl_trap_policers_unregister(struct devlink *devlink,
devlink_trap_policer_unregister(devlink, &policers[i]);
}
EXPORT_SYMBOL_GPL(devl_trap_policers_unregister);
-
-int devlink_compat_phys_port_name_get(struct net_device *dev,
- char *name, size_t len)
-{
- struct devlink_port *devlink_port;
-
- /* RTNL mutex is held here which ensures that devlink_port
- * instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- ASSERT_RTNL();
-
- devlink_port = dev->devlink_port;
- if (!devlink_port)
- return -EOPNOTSUPP;
-
- return __devlink_port_phys_port_name_get(devlink_port, name, len);
-}
-
-int devlink_compat_switch_id_get(struct net_device *dev,
- struct netdev_phys_item_id *ppid)
-{
- struct devlink_port *devlink_port;
-
- /* Caller must hold RTNL mutex or reference to dev, which ensures that
- * devlink_port instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- devlink_port = dev->devlink_port;
- if (!devlink_port || !devlink_port->switch_port)
- return -EOPNOTSUPP;
-
- memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
-
- return 0;
-}
diff --git a/net/devlink/port.c b/net/devlink/port.c
new file mode 100644
index 000000000000..0be8453012ee
--- /dev/null
+++ b/net/devlink/port.c
@@ -0,0 +1,1411 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Jiri Pirko <jiri@...lanox.com>
+ */
+
+#include "devl_internal.h"
+
+#define DEVLINK_PORT_FN_CAPS_VALID_MASK \
+ (_BITUL(__DEVLINK_PORT_FN_ATTR_CAPS_MAX) - 1)
+
+static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
+ [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
+ [DEVLINK_PORT_FN_ATTR_STATE] =
+ NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
+ DEVLINK_PORT_FN_STATE_ACTIVE),
+ [DEVLINK_PORT_FN_ATTR_CAPS] =
+ NLA_POLICY_BITFIELD32(DEVLINK_PORT_FN_CAPS_VALID_MASK),
+};
+
+#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->registered)
+#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE((devlink_port)->registered)
+
+struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
+ unsigned int port_index)
+{
+ return xa_load(&devlink->ports, port_index);
+}
+
+struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_by_index(devlink, port_index);
+ if (!devlink_port)
+ return ERR_PTR(-ENODEV);
+ return devlink_port;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_port_get_from_attrs(devlink, info->attrs);
+}
+
+static void devlink_port_fn_cap_fill(struct nla_bitfield32 *caps,
+ u32 cap, bool is_enable)
+{
+ caps->selector |= cap;
+ if (is_enable)
+ caps->value |= cap;
+}
+
+static int devlink_port_fn_roce_fill(struct devlink_port *devlink_port,
+ struct nla_bitfield32 *caps,
+ struct netlink_ext_ack *extack)
+{
+ bool is_enable;
+ int err;
+
+ if (!devlink_port->ops->port_fn_roce_get)
+ return 0;
+
+ err = devlink_port->ops->port_fn_roce_get(devlink_port, &is_enable,
+ extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+
+ devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_ROCE, is_enable);
+ return 0;
+}
+
+static int devlink_port_fn_migratable_fill(struct devlink_port *devlink_port,
+ struct nla_bitfield32 *caps,
+ struct netlink_ext_ack *extack)
+{
+ bool is_enable;
+ int err;
+
+ if (!devlink_port->ops->port_fn_migratable_get ||
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF)
+ return 0;
+
+ err = devlink_port->ops->port_fn_migratable_get(devlink_port,
+ &is_enable, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+
+ devlink_port_fn_cap_fill(caps, DEVLINK_PORT_FN_CAP_MIGRATABLE, is_enable);
+ return 0;
+}
+
+static int devlink_port_fn_caps_fill(struct devlink_port *devlink_port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ struct nla_bitfield32 caps = {};
+ int err;
+
+ err = devlink_port_fn_roce_fill(devlink_port, &caps, extack);
+ if (err)
+ return err;
+
+ err = devlink_port_fn_migratable_fill(devlink_port, &caps, extack);
+ if (err)
+ return err;
+
+ if (!caps.selector)
+ return 0;
+ err = nla_put_bitfield32(msg, DEVLINK_PORT_FN_ATTR_CAPS, caps.value,
+ caps.selector);
+ if (err)
+ return err;
+
+ *msg_updated = true;
+ return 0;
+}
+
+int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
+{
+ if (devlink_nl_put_handle(msg, devlink_port->devlink))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ return -EMSGSIZE;
+ return 0;
+}
+
+size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
+ + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
+ + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
+}
+
+static int devlink_nl_port_attrs_put(struct sk_buff *msg,
+ struct devlink_port *devlink_port)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ if (!devlink_port->attrs_set)
+ return 0;
+ if (attrs->lanes) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
+ return -EMSGSIZE;
+ }
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
+ return -EMSGSIZE;
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
+ return -EMSGSIZE;
+ switch (devlink_port->attrs.flavour) {
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_pf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_vf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_sf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
+ attrs->pci_sf.pf) ||
+ nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
+ attrs->pci_sf.sf))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (!attrs->split)
+ return 0;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
+ attrs->phys.split_subport_number))
+ return -EMSGSIZE;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int devlink_port_fn_hw_addr_fill(struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ u8 hw_addr[MAX_ADDR_LEN];
+ int hw_addr_len;
+ int err;
+
+ if (!port->ops->port_fn_hw_addr_get)
+ return 0;
+
+ err = port->ops->port_fn_hw_addr_get(port, hw_addr, &hw_addr_len,
+ extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
+ if (err)
+ return err;
+ *msg_updated = true;
+ return 0;
+}
+
+static bool
+devlink_port_fn_state_valid(enum devlink_port_fn_state state)
+{
+ return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
+ state == DEVLINK_PORT_FN_STATE_ACTIVE;
+}
+
+static bool
+devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
+{
+ return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
+ opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
+}
+
+static int devlink_port_fn_state_fill(struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ enum devlink_port_fn_opstate opstate;
+ enum devlink_port_fn_state state;
+ int err;
+
+ if (!port->ops->port_fn_state_get)
+ return 0;
+
+ err = port->ops->port_fn_state_get(port, &state, &opstate, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ if (!devlink_port_fn_state_valid(state)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG(extack, "Invalid state read from driver");
+ return -EINVAL;
+ }
+ if (!devlink_port_fn_opstate_valid(opstate)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG(extack, "Invalid operational state read from driver");
+ return -EINVAL;
+ }
+ if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
+ nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
+ return -EMSGSIZE;
+ *msg_updated = true;
+ return 0;
+}
+
+static int
+devlink_port_fn_mig_set(struct devlink_port *devlink_port, bool enable,
+ struct netlink_ext_ack *extack)
+{
+ return devlink_port->ops->port_fn_migratable_set(devlink_port, enable,
+ extack);
+}
+
+static int
+devlink_port_fn_roce_set(struct devlink_port *devlink_port, bool enable,
+ struct netlink_ext_ack *extack)
+{
+ return devlink_port->ops->port_fn_roce_set(devlink_port, enable,
+ extack);
+}
+
+static int devlink_port_fn_caps_set(struct devlink_port *devlink_port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct nla_bitfield32 caps;
+ u32 caps_value;
+ int err;
+
+ caps = nla_get_bitfield32(attr);
+ caps_value = caps.value & caps.selector;
+ if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE) {
+ err = devlink_port_fn_roce_set(devlink_port,
+ caps_value & DEVLINK_PORT_FN_CAP_ROCE,
+ extack);
+ if (err)
+ return err;
+ }
+ if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
+ err = devlink_port_fn_mig_set(devlink_port, caps_value &
+ DEVLINK_PORT_FN_CAP_MIGRATABLE,
+ extack);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+static int
+devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *function_attr;
+ bool msg_updated = false;
+ int err;
+
+ function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
+ if (!function_attr)
+ return -EMSGSIZE;
+
+ err = devlink_port_fn_hw_addr_fill(port, msg, extack, &msg_updated);
+ if (err)
+ goto out;
+ err = devlink_port_fn_caps_fill(port, msg, extack, &msg_updated);
+ if (err)
+ goto out;
+ err = devlink_port_fn_state_fill(port, msg, extack, &msg_updated);
+out:
+ if (err || !msg_updated)
+ nla_nest_cancel(msg, function_attr);
+ else
+ nla_nest_end(msg, function_attr);
+ return err;
+}
+
+static int devlink_nl_port_fill(struct sk_buff *msg,
+ struct devlink_port *devlink_port,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+
+ spin_lock_bh(&devlink_port->type_lock);
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
+ devlink_port->desired_type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (devlink_port->type_eth.netdev &&
+ (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
+ devlink_port->type_eth.ifindex) ||
+ nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
+ devlink_port->type_eth.ifname)))
+ goto nla_put_failure_type_locked;
+ }
+ if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
+ struct ib_device *ibdev = devlink_port->type_ib.ibdev;
+
+ if (ibdev &&
+ nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
+ ibdev->name))
+ goto nla_put_failure_type_locked;
+ }
+ spin_unlock_bh(&devlink_port->type_lock);
+ if (devlink_nl_port_attrs_put(msg, devlink_port))
+ goto nla_put_failure;
+ if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
+ goto nla_put_failure;
+ if (devlink_port->linecard &&
+ nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
+ devlink_port->linecard->index))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure_type_locked:
+ spin_unlock_bh(&devlink_port->type_lock);
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_port_notify(struct devlink_port *devlink_port,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static void devlink_ports_notify(struct devlink *devlink,
+ enum devlink_command cmd)
+{
+ struct devlink_port *devlink_port;
+ unsigned long port_index;
+
+ xa_for_each(&devlink->ports, port_index, devlink_port)
+ devlink_port_notify(devlink_port, cmd);
+}
+
+void devlink_ports_notify_register(struct devlink *devlink)
+{
+ devlink_ports_notify(devlink, DEVLINK_CMD_PORT_NEW);
+}
+
+void devlink_ports_notify_unregister(struct devlink *devlink)
+{
+ devlink_ports_notify(devlink, DEVLINK_CMD_PORT_DEL);
+}
+
+int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int
+devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
+ struct netlink_callback *cb, int flags)
+{
+ struct devlink_nl_dump_state *state = devlink_dump_state(cb);
+ struct devlink_port *devlink_port;
+ unsigned long port_index;
+ int err = 0;
+
+ xa_for_each_start(&devlink->ports, port_index, devlink_port, state->idx) {
+ err = devlink_nl_port_fill(msg, devlink_port,
+ DEVLINK_CMD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, flags,
+ cb->extack);
+ if (err) {
+ state->idx = port_index;
+ break;
+ }
+ }
+
+ return err;
+}
+
+int devlink_nl_port_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ return devlink_nl_dumpit(skb, cb, devlink_nl_port_get_dump_one);
+}
+
+static int devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type port_type)
+
+{
+ int err;
+
+ if (!devlink_port->ops->port_type_set)
+ return -EOPNOTSUPP;
+
+ if (port_type == devlink_port->type)
+ return 0;
+
+ err = devlink_port->ops->port_type_set(devlink_port, port_type);
+ if (err)
+ return err;
+
+ devlink_port->desired_type = port_type;
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+
+static int devlink_port_function_hw_addr_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ const u8 *hw_addr;
+ int hw_addr_len;
+
+ hw_addr = nla_data(attr);
+ hw_addr_len = nla_len(attr);
+ if (hw_addr_len > MAX_ADDR_LEN) {
+ NL_SET_ERR_MSG(extack, "Port function hardware address too long");
+ return -EINVAL;
+ }
+ if (port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (hw_addr_len != ETH_ALEN) {
+ NL_SET_ERR_MSG(extack, "Address must be 6 bytes for Ethernet device");
+ return -EINVAL;
+ }
+ if (!is_unicast_ether_addr(hw_addr)) {
+ NL_SET_ERR_MSG(extack, "Non-unicast hardware address unsupported");
+ return -EINVAL;
+ }
+ }
+
+ return port->ops->port_fn_hw_addr_set(port, hw_addr, hw_addr_len,
+ extack);
+}
+
+static int devlink_port_fn_state_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ enum devlink_port_fn_state state;
+
+ state = nla_get_u8(attr);
+ return port->ops->port_fn_state_set(port, state, extack);
+}
+
+static int devlink_port_function_validate(struct devlink_port *devlink_port,
+ struct nlattr **tb,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_port_ops *ops = devlink_port->ops;
+ struct nlattr *attr;
+
+ if (tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] &&
+ !ops->port_fn_hw_addr_set) {
+ NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
+ "Port doesn't support function attributes");
+ return -EOPNOTSUPP;
+ }
+ if (tb[DEVLINK_PORT_FN_ATTR_STATE] && !ops->port_fn_state_set) {
+ NL_SET_ERR_MSG_ATTR(extack, tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR],
+ "Function does not support state setting");
+ return -EOPNOTSUPP;
+ }
+ attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
+ if (attr) {
+ struct nla_bitfield32 caps;
+
+ caps = nla_get_bitfield32(attr);
+ if (caps.selector & DEVLINK_PORT_FN_CAP_ROCE &&
+ !ops->port_fn_roce_set) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "Port doesn't support RoCE function attribute");
+ return -EOPNOTSUPP;
+ }
+ if (caps.selector & DEVLINK_PORT_FN_CAP_MIGRATABLE) {
+ if (!ops->port_fn_migratable_set) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "Port doesn't support migratable function attribute");
+ return -EOPNOTSUPP;
+ }
+ if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PCI_VF) {
+ NL_SET_ERR_MSG_ATTR(extack, attr,
+ "migratable function attribute supported for VFs only");
+ return -EOPNOTSUPP;
+ }
+ }
+ }
+ return 0;
+}
+
+static int devlink_port_function_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
+ devlink_function_nl_policy, extack);
+ if (err < 0) {
+ NL_SET_ERR_MSG(extack, "Fail to parse port function attributes");
+ return err;
+ }
+
+ err = devlink_port_function_validate(port, tb, extack);
+ if (err)
+ return err;
+
+ attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
+ if (attr) {
+ err = devlink_port_function_hw_addr_set(port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ attr = tb[DEVLINK_PORT_FN_ATTR_CAPS];
+ if (attr) {
+ err = devlink_port_fn_caps_set(port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ /* Keep this as the last function attribute set, so that when
+ * multiple port function attributes are set along with state,
+ * Those can be applied first before activating the state.
+ */
+ attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
+ if (attr)
+ err = devlink_port_fn_state_set(port, attr, extack);
+
+ if (!err)
+ devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
+ return err;
+}
+
+int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ int err;
+
+ if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
+ enum devlink_port_type port_type;
+
+ port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
+ err = devlink_port_type_set(devlink_port, port_type);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
+ struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
+ struct netlink_ext_ack *extack = info->extack;
+
+ err = devlink_port_function_set(devlink_port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ u32 count;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
+ return -EINVAL;
+ if (!devlink_port->ops->port_split)
+ return -EOPNOTSUPP;
+
+ count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
+
+ if (!devlink_port->attrs.splittable) {
+ /* Split ports cannot be split. */
+ if (devlink_port->attrs.split)
+ NL_SET_ERR_MSG(info->extack, "Port cannot be split further");
+ else
+ NL_SET_ERR_MSG(info->extack, "Port cannot be split");
+ return -EINVAL;
+ }
+
+ if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
+ NL_SET_ERR_MSG(info->extack, "Invalid split count");
+ return -EINVAL;
+ }
+
+ return devlink_port->ops->port_split(devlink, devlink_port, count,
+ info->extack);
+}
+
+int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink_port->ops->port_unsplit)
+ return -EOPNOTSUPP;
+ return devlink_port->ops->port_unsplit(devlink, devlink_port, info->extack);
+}
+
+int devlink_nl_cmd_port_new_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink_port_new_attrs new_attrs = {};
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_port *devlink_port;
+ struct sk_buff *msg;
+ int err;
+
+ if (!devlink->ops->port_new)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
+ !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
+ NL_SET_ERR_MSG(extack, "Port flavour or PCI PF are not specified");
+ return -EINVAL;
+ }
+ new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
+ new_attrs.pfnum =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ /* Port index of the new port being created by driver. */
+ new_attrs.port_index =
+ nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+ new_attrs.port_index_valid = true;
+ }
+ if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
+ new_attrs.controller =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
+ new_attrs.controller_valid = true;
+ }
+ if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
+ info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
+ new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
+ new_attrs.sfnum_valid = true;
+ }
+
+ err = devlink->ops->port_new(devlink, &new_attrs,
+ extack, &devlink_port);
+ if (err)
+ return err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto err_out_port_del;
+ }
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
+ info->snd_portid, info->snd_seq, 0, NULL);
+ if (WARN_ON_ONCE(err))
+ goto err_out_msg_free;
+ err = genlmsg_reply(msg, info);
+ if (err)
+ goto err_out_port_del;
+ return 0;
+
+err_out_msg_free:
+ nlmsg_free(msg);
+err_out_port_del:
+ devlink_port->ops->port_del(devlink, devlink_port, NULL);
+ return err;
+}
+
+int devlink_nl_cmd_port_del_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink_port->ops->port_del)
+ return -EOPNOTSUPP;
+
+ return devlink_port->ops->port_del(devlink, devlink_port, extack);
+}
+
+static void devlink_port_type_warn(struct work_struct *work)
+{
+ struct devlink_port *port = container_of(to_delayed_work(work),
+ struct devlink_port,
+ type_warn_dw);
+ dev_warn(port->devlink->dev, "Type was not set for devlink port.");
+}
+
+static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
+{
+ /* Ignore CPU and DSA flavours. */
+ return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
+}
+
+#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
+
+static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ /* Schedule a work to WARN in case driver does not set port
+ * type within timeout.
+ */
+ schedule_delayed_work(&devlink_port->type_warn_dw,
+ DEVLINK_PORT_TYPE_WARN_TIMEOUT);
+}
+
+static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ cancel_delayed_work_sync(&devlink_port->type_warn_dw);
+}
+
+/**
+ * devlink_port_init() - Init devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ *
+ * Initialize essential stuff that is needed for functions
+ * that may be called before devlink port registration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_init(struct devlink *devlink,
+ struct devlink_port *devlink_port)
+{
+ if (devlink_port->initialized)
+ return;
+ devlink_port->devlink = devlink;
+ INIT_LIST_HEAD(&devlink_port->region_list);
+ devlink_port->initialized = true;
+}
+EXPORT_SYMBOL_GPL(devlink_port_init);
+
+/**
+ * devlink_port_fini() - Deinitialize devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Deinitialize essential stuff that is in use for functions
+ * that may be called after devlink port unregistration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_fini(struct devlink_port *devlink_port)
+{
+ WARN_ON(!list_empty(&devlink_port->region_list));
+}
+EXPORT_SYMBOL_GPL(devlink_port_fini);
+
+static const struct devlink_port_ops devlink_port_dummy_ops = {};
+
+/**
+ * devl_port_register_with_ops() - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ * @ops: port ops
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ */
+int devl_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops)
+{
+ int err;
+
+ devl_assert_locked(devlink);
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port_init(devlink, devlink_port);
+ devlink_port->registered = true;
+ devlink_port->index = port_index;
+ devlink_port->ops = ops ? ops : &devlink_port_dummy_ops;
+ spin_lock_init(&devlink_port->type_lock);
+ INIT_LIST_HEAD(&devlink_port->reporter_list);
+ err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
+ if (err) {
+ devlink_port->registered = false;
+ return err;
+ }
+
+ INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
+ devlink_port_type_warn_schedule(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_port_register_with_ops);
+
+/**
+ * devlink_port_register_with_ops - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ * @ops: port ops
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+int devlink_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_port_register_with_ops(devlink, devlink_port,
+ port_index, ops);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_port_register_with_ops);
+
+/**
+ * devl_port_unregister() - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ */
+void devl_port_unregister(struct devlink_port *devlink_port)
+{
+ lockdep_assert_held(&devlink_port->devlink->lock);
+ WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
+
+ devlink_port_type_warn_cancel(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ xa_erase(&devlink_port->devlink->ports, devlink_port->index);
+ WARN_ON(!list_empty(&devlink_port->reporter_list));
+ devlink_port->registered = false;
+}
+EXPORT_SYMBOL_GPL(devl_port_unregister);
+
+/**
+ * devlink_port_unregister - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_port_unregister(struct devlink_port *devlink_port)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ devl_lock(devlink);
+ devl_port_unregister(devlink_port);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_port_unregister);
+
+static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
+ struct net_device *netdev)
+{
+ const struct net_device_ops *ops = netdev->netdev_ops;
+
+ /* If driver registers devlink port, it should set devlink port
+ * attributes accordingly so the compat functions are called
+ * and the original ops are not used.
+ */
+ if (ops->ndo_get_phys_port_name) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_phys_port_name
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ char name[IFNAMSIZ];
+ int err;
+
+ err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+ if (ops->ndo_get_port_parent_id) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_port_parent_id
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ struct netdev_phys_item_id ppid;
+ int err;
+
+ err = ops->ndo_get_port_parent_id(netdev, &ppid);
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+}
+
+static void __devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type type,
+ void *type_dev)
+{
+ struct net_device *netdev = type_dev;
+
+ ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
+
+ if (type == DEVLINK_PORT_TYPE_NOTSET) {
+ devlink_port_type_warn_schedule(devlink_port);
+ } else {
+ devlink_port_type_warn_cancel(devlink_port);
+ if (type == DEVLINK_PORT_TYPE_ETH && netdev)
+ devlink_port_type_netdev_checks(devlink_port, netdev);
+ }
+
+ spin_lock_bh(&devlink_port->type_lock);
+ devlink_port->type = type;
+ switch (type) {
+ case DEVLINK_PORT_TYPE_ETH:
+ devlink_port->type_eth.netdev = netdev;
+ if (netdev) {
+ ASSERT_RTNL();
+ devlink_port->type_eth.ifindex = netdev->ifindex;
+ BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
+ sizeof(netdev->name));
+ strcpy(devlink_port->type_eth.ifname, netdev->name);
+ }
+ break;
+ case DEVLINK_PORT_TYPE_IB:
+ devlink_port->type_ib.ibdev = type_dev;
+ break;
+ default:
+ break;
+ }
+ spin_unlock_bh(&devlink_port->type_lock);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+}
+
+/**
+ * devlink_port_type_eth_set - Set port type to Ethernet
+ *
+ * @devlink_port: devlink port
+ *
+ * If driver is calling this, most likely it is doing something wrong.
+ */
+void devlink_port_type_eth_set(struct devlink_port *devlink_port)
+{
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
+
+/**
+ * devlink_port_type_ib_set - Set port type to InfiniBand
+ *
+ * @devlink_port: devlink port
+ * @ibdev: related IB device
+ */
+void devlink_port_type_ib_set(struct devlink_port *devlink_port,
+ struct ib_device *ibdev)
+{
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
+
+/**
+ * devlink_port_type_clear - Clear port type
+ *
+ * @devlink_port: devlink port
+ *
+ * If driver is calling this for clearing Ethernet type, most likely
+ * it is doing something wrong.
+ */
+void devlink_port_type_clear(struct devlink_port *devlink_port)
+{
+ if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_clear);
+
+int devlink_port_netdevice_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+ struct devlink_port *devlink_port = netdev->devlink_port;
+ struct devlink *devlink;
+
+ if (!devlink_port)
+ return NOTIFY_OK;
+ devlink = devlink_port->devlink;
+
+ switch (event) {
+ case NETDEV_POST_INIT:
+ /* Set the type but not netdev pointer. It is going to be set
+ * later on by NETDEV_REGISTER event. Happens once during
+ * netdevice register
+ */
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
+ NULL);
+ break;
+ case NETDEV_REGISTER:
+ case NETDEV_CHANGENAME:
+ if (devlink_net(devlink) != dev_net(netdev))
+ return NOTIFY_OK;
+ /* Set the netdev on top of previously set type. Note this
+ * event happens also during net namespace change so here
+ * we take into account netdev pointer appearing in this
+ * namespace.
+ */
+ __devlink_port_type_set(devlink_port, devlink_port->type,
+ netdev);
+ break;
+ case NETDEV_UNREGISTER:
+ if (devlink_net(devlink) != dev_net(netdev))
+ return NOTIFY_OK;
+ /* Clear netdev pointer, but not the type. This event happens
+ * also during net namespace change so we need to clear
+ * pointer to netdev that is going to another net namespace.
+ */
+ __devlink_port_type_set(devlink_port, devlink_port->type,
+ NULL);
+ break;
+ case NETDEV_PRE_UNINIT:
+ /* Clear the type and the netdev pointer. Happens one during
+ * netdevice unregister.
+ */
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
+ NULL);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
+ enum devlink_port_flavour flavour)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ devlink_port->attrs_set = true;
+ attrs->flavour = flavour;
+ if (attrs->switch_id.id_len) {
+ devlink_port->switch_port = true;
+ if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
+ attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
+ } else {
+ devlink_port->switch_port = false;
+ }
+ return 0;
+}
+
+/**
+ * devlink_port_attrs_set - Set port attributes
+ *
+ * @devlink_port: devlink port
+ * @attrs: devlink port attrs
+ */
+void devlink_port_attrs_set(struct devlink_port *devlink_port,
+ struct devlink_port_attrs *attrs)
+{
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->attrs = *attrs;
+ ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
+ if (ret)
+ return;
+ WARN_ON(attrs->splittable && attrs->split);
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
+
+/**
+ * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_PF);
+ if (ret)
+ return;
+ attrs->pci_pf.controller = controller;
+ attrs->pci_pf.pf = pf;
+ attrs->pci_pf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
+
+/**
+ * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @vf: associated VF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u16 vf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_VF);
+ if (ret)
+ return;
+ attrs->pci_vf.controller = controller;
+ attrs->pci_vf.pf = pf;
+ attrs->pci_vf.vf = vf;
+ attrs->pci_vf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
+
+/**
+ * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @sf: associated SF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u32 sf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_SF);
+ if (ret)
+ return;
+ attrs->pci_sf.controller = controller;
+ attrs->pci_sf.pf = pf;
+ attrs->pci_sf.sf = sf;
+ attrs->pci_sf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
+
+/**
+ * devlink_port_linecard_set - Link port with a linecard
+ *
+ * @devlink_port: devlink port
+ * @linecard: devlink linecard
+ */
+void devlink_port_linecard_set(struct devlink_port *devlink_port,
+ struct devlink_linecard *linecard)
+{
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->linecard = linecard;
+}
+EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
+
+static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
+ char *name, size_t len)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int n = 0;
+
+ if (!devlink_port->attrs_set)
+ return -EOPNOTSUPP;
+
+ switch (attrs->flavour) {
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ if (devlink_port->linecard)
+ n = snprintf(name, len, "l%u",
+ devlink_port->linecard->index);
+ if (n < len)
+ n += snprintf(name + n, len - n, "p%u",
+ attrs->phys.port_number);
+ if (n < len && attrs->split)
+ n += snprintf(name + n, len - n, "s%u",
+ attrs->phys.split_subport_number);
+ break;
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ case DEVLINK_PORT_FLAVOUR_UNUSED:
+ /* As CPU and DSA ports do not have a netdevice associated
+ * case should not ever happen.
+ */
+ WARN_ON(1);
+ return -EINVAL;
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (attrs->pci_pf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (attrs->pci_vf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%uvf%u",
+ attrs->pci_vf.pf, attrs->pci_vf.vf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (attrs->pci_sf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
+ attrs->pci_sf.sf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_VIRTUAL:
+ return -EOPNOTSUPP;
+ }
+
+ if (n >= len)
+ return -EINVAL;
+
+ return 0;
+}
+
+int devlink_compat_phys_port_name_get(struct net_device *dev,
+ char *name, size_t len)
+{
+ struct devlink_port *devlink_port;
+
+ /* RTNL mutex is held here which ensures that devlink_port
+ * instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ ASSERT_RTNL();
+
+ devlink_port = dev->devlink_port;
+ if (!devlink_port)
+ return -EOPNOTSUPP;
+
+ return __devlink_port_phys_port_name_get(devlink_port, name, len);
+}
+
+int devlink_compat_switch_id_get(struct net_device *dev,
+ struct netdev_phys_item_id *ppid)
+{
+ struct devlink_port *devlink_port;
+
+ /* Caller must hold RTNL mutex or reference to dev, which ensures that
+ * devlink_port instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ devlink_port = dev->devlink_port;
+ if (!devlink_port || !devlink_port->switch_port)
+ return -EOPNOTSUPP;
+
+ memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
+
+ return 0;
+}
--
2.41.0
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