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mlxsw: spectrum_acl: Add C-TCAM spill tracepoint 

Add some visibility to the rule addition process and trace whenever rule
spilled into C-TCAM.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2019-01-30 08:58:34 +00:00 committed by David S. Miller
parent cb56e21467
commit a97cfe4de1
2 changed files with 41 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c
View File

@ -7,6 +7,8 @@
#include <linux/gfp.h>
#include <linux/refcount.h>
#include <linux/rhashtable.h>
#define CREATE_TRACE_POINTS
#include <trace/events/mlxsw.h>
#include "reg.h"
#include "core.h"
@ -578,6 +580,7 @@ int mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
/* It is possible we failed to add the rule to the A-TCAM due to
* exceeded number of masks. Try to spill into C-TCAM.
*/
trace_mlxsw_sp_acl_atcam_entry_add_ctcam_spill(mlxsw_sp, aregion);
err = mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, &aregion->cregion,
&achunk->cchunk, &aentry->centry,
rulei, true);

38
include/trace/events/mlxsw.h Normal file
View File

@ -0,0 +1,38 @@
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2019 Mellanox Technologies. All rights reserved */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mlxsw
#if !defined(_MLXSW_TRACEPOINT_H) || defined(TRACE_HEADER_MULTI_READ)
#define _MLXSW_TRACEPOINT_H
#include <linux/tracepoint.h>
struct mlxsw_sp;
struct mlxsw_sp_acl_atcam_region;
TRACE_EVENT(mlxsw_sp_acl_atcam_entry_add_ctcam_spill,
TP_PROTO(const struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_acl_atcam_region *aregion),
TP_ARGS(mlxsw_sp, aregion),
TP_STRUCT__entry(
__field(const void *, mlxsw_sp)
__field(const void *, aregion)
),
TP_fast_assign(
__entry->mlxsw_sp = mlxsw_sp;
__entry->aregion = aregion;
),
TP_printk("mlxsw_sp %p, aregion %p",
__entry->mlxsw_sp, __entry->aregion)
);
#endif /* _MLXSW_TRACEPOINT_H */
/* This part must be outside protection */
#include <trace/define_trace.h>