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119 lines
4.0 KiB
119 lines
4.0 KiB
4 years ago
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From e2600e33bb83fcfb5ee3505f069d5c469e1633ef 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 14:52:05 -0400
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Subject: [PATCH 039/312] [netdrv] net/mlx5e: Add trace point for neigh used
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value update
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Message-id: <20200510145245.10054-43-ahleihel@redhat.com>
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Patchwork-id: 306583
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Patchwork-instance: patchwork
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O-Subject: [RHEL8.3 BZ 1789378 v2 42/82] net/mlx5e: Add trace point for neigh used value 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 c786fe596bede275f887f212eebee74490043b84
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Author: Vlad Buslov <vladbu@mellanox.com>
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Date: Tue Jun 25 22:33:15 2019 +0300
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net/mlx5e: Add trace point for neigh used value update
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Allow tracing result of neigh used value update task that is executed
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periodically on workqueue.
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Usage example:
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># cd /sys/kernel/debug/tracing
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># echo mlx5:mlx5e_tc_update_neigh_used_value >> set_event
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># cat trace
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...
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kworker/u48:4-8806 [009] ...1 55117.882428: mlx5e_tc_update_neigh_used_value:
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netdev: ens1f0 IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_used=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_tc_tracepoint.h | 31 ++++++++++++++++++++++
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drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 ++
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2 files changed, 33 insertions(+)
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/en_tc_tracepoint.h b/drivers/net/ethernet/mellanox/mlx5/core/diag/en_tc_tracepoint.h
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index a362100fe6d3..d4e6cfaaade3 100644
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--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/en_tc_tracepoint.h
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/en_tc_tracepoint.h
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@@ -10,6 +10,7 @@
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include <net/flow_offload.h>
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+#include "en_rep.h"
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#define __parse_action(ids, num) parse_action(p, ids, num)
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@@ -73,6 +74,36 @@ TRACE_EVENT(mlx5e_stats_flower,
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)
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);
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+TRACE_EVENT(mlx5e_tc_update_neigh_used_value,
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+ TP_PROTO(const struct mlx5e_neigh_hash_entry *nhe, bool neigh_used),
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+ TP_ARGS(nhe, neigh_used),
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+ TP_STRUCT__entry(__string(devname, nhe->m_neigh.dev->name)
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+ __array(u8, v4, 4)
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+ __array(u8, v6, 16)
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+ __field(bool, neigh_used)
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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_used = neigh_used;
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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 IPv4: %pI4 IPv6: %pI6c neigh_used=%d\n",
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+ __get_str(devname), __entry->v4, __entry->v6,
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+ __entry->neigh_used
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+ )
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+);
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+
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#endif /* _MLX5_TC_TP_ */
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/* This part must be outside protection */
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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index 8d0cf434d16c..31d71e1f0545 100644
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--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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@@ -1536,6 +1536,8 @@ void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
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}
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}
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+ trace_mlx5e_tc_update_neigh_used_value(nhe, neigh_used);
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+
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if (neigh_used) {
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nhe->reported_lastuse = jiffies;
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--
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2.13.6
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