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linux/include/trace/events/devlink.h
Leon Romanovsky 21314638c9 devlink: Reduce struct devlink exposure 
The declaration of struct devlink in general header provokes the
situation where internal fields can be accidentally used by the driver
authors. In order to reduce such possible situations, let's reduce the
namespace exposure of struct devlink.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-12 16:29:16 -07:00

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/* SPDX-License-Identifier: GPL-2.0 */
#if IS_ENABLED(CONFIG_NET_DEVLINK)
#undef TRACE_SYSTEM
#define TRACE_SYSTEM devlink
#if !defined(_TRACE_DEVLINK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_DEVLINK_H
#include <linux/device.h>
#include <net/devlink.h>
#include <linux/tracepoint.h>
/*
* Tracepoint for devlink hardware message:
*/
TRACE_EVENT(devlink_hwmsg,
TP_PROTO(const struct devlink *devlink, bool incoming,
unsigned long type, const u8 *buf, size_t len),
TP_ARGS(devlink, incoming, type, buf, len),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__field(bool, incoming)
__field(unsigned long, type)
__dynamic_array(u8, buf, len)
__field(size_t, len)
),
TP_fast_assign(
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__entry->incoming = incoming;
__entry->type = type;
memcpy(__get_dynamic_array(buf), buf, len);
__entry->len = len;
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s incoming=%d type=%lu buf=0x[%*phD] len=%zu",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __entry->incoming, __entry->type,
(int) __entry->len, __get_dynamic_array(buf), __entry->len)
);
/*
* Tracepoint for devlink hardware error:
*/
TRACE_EVENT(devlink_hwerr,
TP_PROTO(const struct devlink *devlink, int err, const char *msg),
TP_ARGS(devlink, err, msg),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__field(int, err)
__string(msg, msg)
),
TP_fast_assign(
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__entry->err = err;
__assign_str(msg, msg);
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s err=%d %s",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __entry->err, __get_str(msg))
);
/*
* Tracepoint for devlink health message:
*/
TRACE_EVENT(devlink_health_report,
TP_PROTO(const struct devlink *devlink, const char *reporter_name,
const char *msg),
TP_ARGS(devlink, reporter_name, msg),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__string(reporter_name, msg)
__string(msg, msg)
),
TP_fast_assign(
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__assign_str(reporter_name, reporter_name);
__assign_str(msg, msg);
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s reporter_name=%s: %s",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __get_str(reporter_name),
__get_str(msg))
);
/*
* Tracepoint for devlink health recover aborted message:
*/
TRACE_EVENT(devlink_health_recover_aborted,
TP_PROTO(const struct devlink *devlink, const char *reporter_name,
bool health_state, u64 time_since_last_recover),
TP_ARGS(devlink, reporter_name, health_state, time_since_last_recover),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__string(reporter_name, reporter_name)
__field(bool, health_state)
__field(u64, time_since_last_recover)
),
TP_fast_assign(
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__assign_str(reporter_name, reporter_name);
__entry->health_state = health_state;
__entry->time_since_last_recover = time_since_last_recover;
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s reporter_name=%s: health_state=%d time_since_last_recover=%llu recover aborted",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __get_str(reporter_name),
__entry->health_state,
__entry->time_since_last_recover)
);
/*
* Tracepoint for devlink health reporter state update:
*/
TRACE_EVENT(devlink_health_reporter_state_update,
TP_PROTO(const struct devlink *devlink, const char *reporter_name,
bool new_state),
TP_ARGS(devlink, reporter_name, new_state),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__string(reporter_name, reporter_name)
__field(u8, new_state)
),
TP_fast_assign(
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__assign_str(reporter_name, reporter_name);
__entry->new_state = new_state;
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s reporter_name=%s: new_state=%d",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __get_str(reporter_name),
__entry->new_state)
);
/*
* Tracepoint for devlink packet trap:
*/
TRACE_EVENT(devlink_trap_report,
TP_PROTO(const struct devlink *devlink, struct sk_buff *skb,
const struct devlink_trap_metadata *metadata),
TP_ARGS(devlink, skb, metadata),
TP_STRUCT__entry(
__string(bus_name, devlink_to_dev(devlink)->bus->name)
__string(dev_name, dev_name(devlink_to_dev(devlink)))
__string(driver_name, devlink_to_dev(devlink)->driver->name)
__string(trap_name, metadata->trap_name)
__string(trap_group_name, metadata->trap_group_name)
__dynamic_array(char, input_dev_name, IFNAMSIZ)
),
TP_fast_assign(
struct net_device *input_dev = metadata->input_dev;
__assign_str(bus_name, devlink_to_dev(devlink)->bus->name);
__assign_str(dev_name, dev_name(devlink_to_dev(devlink)));
__assign_str(driver_name, devlink_to_dev(devlink)->driver->name);
__assign_str(trap_name, metadata->trap_name);
__assign_str(trap_group_name, metadata->trap_group_name);
__assign_str(input_dev_name,
(input_dev ? input_dev->name : "NULL"));
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s trap_name=%s "
"trap_group_name=%s input_dev_name=%s", __get_str(bus_name),
__get_str(dev_name), __get_str(driver_name),
__get_str(trap_name), __get_str(trap_group_name),
__get_str(input_dev_name))
);
#endif /* _TRACE_DEVLINK_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
#else /* CONFIG_NET_DEVLINK */
#if !defined(_TRACE_DEVLINK_H)
#define _TRACE_DEVLINK_H
#include <net/devlink.h>
static inline void trace_devlink_hwmsg(const struct devlink *devlink,
bool incoming, unsigned long type,
const u8 *buf, size_t len)
{
}
static inline void trace_devlink_hwerr(const struct devlink *devlink,
int err, const char *msg)
{
}
#endif /* _TRACE_DEVLINK_H */
#endif
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