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From 94744255e69bab4bcd94627d5255f75bc71f09e0 Mon Sep 17 00:00:00 2001
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From: Alaa Hleihel <ahleihel@redhat.com>
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Date: Sun, 10 May 2020 14:52:06 -0400
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Subject: [PATCH 040/312] [netdrv] net/mlx5e: Add trace point for neigh update
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Message-id: <20200510145245.10054-44-ahleihel@redhat.com>
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Patchwork-id: 306584
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Patchwork-instance: patchwork
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O-Subject: [RHEL8.3 BZ 1789378 v2 43/82] net/mlx5e: Add trace point for neigh update
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Bugzilla: 1789378
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RH-Acked-by: Kamal Heib <kheib@redhat.com>
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RH-Acked-by: Jarod Wilson <jarod@redhat.com>
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RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
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RH-Acked-by: Jonathan Toppins <jtoppins@redhat.com>
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Bugzilla: http://bugzilla.redhat.com/1789378
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Upstream: v5.4-rc1
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Conflicts:
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- Documentation/networking/device_drivers/mellanox/mlx5.rst
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Drop changes to doc file that doesn't exist.
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commit 5970882a2510e8bffaef518a82ea207798187a93
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Author: Vlad Buslov <vladbu@mellanox.com>
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Date: Tue Jun 25 22:40:20 2019 +0300
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net/mlx5e: Add trace point for neigh update
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Allow tracing neigh state during neigh update task that is executed on
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workqueue and is scheduled by neigh state change event.
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Usage example:
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># cd /sys/kernel/debug/tracing
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># echo mlx5:mlx5e_rep_neigh_update >> set_event
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># cat trace
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...
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kworker/u48:7-2221 [009] ...1 1475.387435: mlx5e_rep_neigh_update:
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netdev: ens1f0 MAC: 24:8a:07:9a:17:9a IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_connected=1
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Added corresponding documentation in
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Documentation/networking/device-driver/mellanox/mlx5.rst
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Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
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Reviewed-by: Dmytro Linkin <dmitrolin@mellanox.com>
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Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Signed-off-by: Alaa Hleihel <ahleihel@redhat.com>
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Signed-off-by: Frantisek Hrbata <fhrbata@redhat.com>
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---
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.../mellanox/mlx5/core/diag/en_rep_tracepoint.h | 54 ++++++++++++++++++++++
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drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 4 ++
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2 files changed, 58 insertions(+)
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create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/diag/en_rep_tracepoint.h
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/en_rep_tracepoint.h b/drivers/net/ethernet/mellanox/mlx5/core/diag/en_rep_tracepoint.h
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new file mode 100644
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index 000000000000..1177860a2ee4
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--- /dev/null
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/en_rep_tracepoint.h
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@@ -0,0 +1,54 @@
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+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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+/* Copyright (c) 2019 Mellanox Technologies. */
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+
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+#undef TRACE_SYSTEM
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+#define TRACE_SYSTEM mlx5
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+
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+#if !defined(_MLX5_EN_REP_TP_) || defined(TRACE_HEADER_MULTI_READ)
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+#define _MLX5_EN_REP_TP_
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+
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+#include <linux/tracepoint.h>
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+#include <linux/trace_seq.h>
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+#include "en_rep.h"
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+
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+TRACE_EVENT(mlx5e_rep_neigh_update,
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+ TP_PROTO(const struct mlx5e_neigh_hash_entry *nhe, const u8 *ha,
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+ bool neigh_connected),
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+ TP_ARGS(nhe, ha, neigh_connected),
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+ TP_STRUCT__entry(__string(devname, nhe->m_neigh.dev->name)
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+ __array(u8, ha, ETH_ALEN)
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+ __array(u8, v4, 4)
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+ __array(u8, v6, 16)
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+ __field(bool, neigh_connected)
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+ ),
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+ TP_fast_assign(const struct mlx5e_neigh *mn = &nhe->m_neigh;
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+ struct in6_addr *pin6;
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+ __be32 *p32;
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+
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+ __assign_str(devname, mn->dev->name);
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+ __entry->neigh_connected = neigh_connected;
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+ memcpy(__entry->ha, ha, ETH_ALEN);
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+
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+ p32 = (__be32 *)__entry->v4;
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+ pin6 = (struct in6_addr *)__entry->v6;
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+ if (mn->family == AF_INET) {
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+ *p32 = mn->dst_ip.v4;
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+ ipv6_addr_set_v4mapped(*p32, pin6);
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+ } else if (mn->family == AF_INET6) {
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+ *pin6 = mn->dst_ip.v6;
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+ }
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+ ),
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+ TP_printk("netdev: %s MAC: %pM IPv4: %pI4 IPv6: %pI6c neigh_connected=%d\n",
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+ __get_str(devname), __entry->ha,
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+ __entry->v4, __entry->v6, __entry->neigh_connected
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+ )
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+);
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+
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+#endif /* _MLX5_EN_REP_TP_ */
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+
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+/* This part must be outside protection */
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+#undef TRACE_INCLUDE_PATH
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+#define TRACE_INCLUDE_PATH ./diag
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+#undef TRACE_INCLUDE_FILE
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+#define TRACE_INCLUDE_FILE en_rep_tracepoint
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+#include <trace/define_trace.h>
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
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index 66c8c2ace4b9..037983a8f149 100644
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--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
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@@ -46,6 +46,8 @@
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#include "en/tc_tun.h"
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#include "fs_core.h"
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#include "lib/port_tun.h"
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+#define CREATE_TRACE_POINTS
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+#include "diag/en_rep_tracepoint.h"
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#define MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE \
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max(0x7, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)
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@@ -633,6 +635,8 @@ static void mlx5e_rep_neigh_update(struct work_struct *work)
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neigh_connected = (nud_state & NUD_VALID) && !dead;
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+ trace_mlx5e_rep_neigh_update(nhe, ha, neigh_connected);
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+
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list_for_each_entry(e, &nhe->encap_list, encap_list) {
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if (!mlx5e_encap_take(e))
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continue;
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--
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2.13.6
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