AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

net/mlx5e: Add trace point for neigh update

Browse Source 
Allow tracing neigh state during neigh update task that is executed on
workqueue and is scheduled by neigh state change event.

Usage example:
 ># cd /sys/kernel/debug/tracing
 ># echo mlx5:mlx5e_rep_neigh_update >> set_event
 ># cat trace
    ...
    kworker/u48:7-2221  [009] ...1  1475.387435: mlx5e_rep_neigh_update:
netdev: ens1f0 MAC: 24:8a:07:9a:17:9a IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_connected=1

Added corresponding documentation in
    Documentation/networking/device-driver/mellanox/mlx5.rst

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Dmytro Linkin <dmitrolin@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Vlad Buslov 2019-06-25 22:40:20 +03:00 committed by Saeed Mahameed
parent c786fe596b
commit 5970882a25
3 changed files with 65 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/networking/device_drivers/mellanox/mlx5.rst
View File

@ -258,3 +258,10 @@ tc and eswitch offloads tracepoints:
$ cat /sys/kernel/debug/tracing/trace
...
kworker/u48:4-8806 [009] ...1 55117.882428: mlx5e_tc_update_neigh_used_value: netdev: ens1f0 IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_used=1
- mlx5e_rep_neigh_update: trace neigh update tasks scheduled due to neigh state change events::
$ echo mlx5:mlx5e_rep_neigh_update >> /sys/kernel/debug/tracing/set_event
$ cat /sys/kernel/debug/tracing/trace
...
kworker/u48:7-2221 [009] ...1 1475.387435: mlx5e_rep_neigh_update: netdev: ens1f0 MAC: 24:8a:07:9a:17:9a IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_connected=1

54
drivers/net/ethernet/mellanox/mlx5/core/diag/en_rep_tracepoint.h Normal file
View File

@ -0,0 +1,54 @@
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2019 Mellanox Technologies. */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mlx5
#if !defined(_MLX5_EN_REP_TP_) || defined(TRACE_HEADER_MULTI_READ)
#define _MLX5_EN_REP_TP_
#include <linux/tracepoint.h>
#include <linux/trace_seq.h>
#include "en_rep.h"
TRACE_EVENT(mlx5e_rep_neigh_update,
TP_PROTO(const struct mlx5e_neigh_hash_entry *nhe, const u8 *ha,
bool neigh_connected),
TP_ARGS(nhe, ha, neigh_connected),
TP_STRUCT__entry(__string(devname, nhe->m_neigh.dev->name)
__array(u8, ha, ETH_ALEN)
__array(u8, v4, 4)
__array(u8, v6, 16)
__field(bool, neigh_connected)
),
TP_fast_assign(const struct mlx5e_neigh *mn = &nhe->m_neigh;
struct in6_addr *pin6;
__be32 *p32;
__assign_str(devname, mn->dev->name);
__entry->neigh_connected = neigh_connected;
memcpy(__entry->ha, ha, ETH_ALEN);
p32 = (__be32 *)__entry->v4;
pin6 = (struct in6_addr *)__entry->v6;
if (mn->family == AF_INET) {
*p32 = mn->dst_ip.v4;
ipv6_addr_set_v4mapped(*p32, pin6);
} else if (mn->family == AF_INET6) {
*pin6 = mn->dst_ip.v6;
}
),
TP_printk("netdev: %s MAC: %pM IPv4: %pI4 IPv6: %pI6c neigh_connected=%d\n",
__get_str(devname), __entry->ha,
__entry->v4, __entry->v6, __entry->neigh_connected
)
);
#endif /* _MLX5_EN_REP_TP_ */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH ./diag
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE en_rep_tracepoint
#include <trace/define_trace.h>

4
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View File

@ -46,6 +46,8 @@
#include "en/tc_tun.h"
#include "fs_core.h"
#include "lib/port_tun.h"
#define CREATE_TRACE_POINTS
#include "diag/en_rep_tracepoint.h"
#define MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE \
max(0x7, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)
@ -657,6 +659,8 @@ static void mlx5e_rep_neigh_update(struct work_struct *work)
neigh_connected = (nud_state & NUD_VALID) && !dead;
trace_mlx5e_rep_neigh_update(nhe, ha, neigh_connected);
list_for_each_entry(e, &nhe->encap_list, encap_list) {
if (!mlx5e_encap_take(e))
continue;