diff mbox series

[for-next,V4,5/6] IB/MAD: Add SMP details to MAD tracing

Message ID 20190211151503.16434-6-ira.weiny@intel.com (mailing list archive)
State Superseded
Delegated to: Jason Gunthorpe
Headers show
Series Add MAD stack trace points | expand

Commit Message

Ira Weiny Feb. 11, 2019, 3:15 p.m. UTC 
From: Ira Weiny <ira.weiny@intel.com>

In addition to the normal mad tracing this adds information about Subnet
Management packets, especially path information on directed route packets.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>

---
Changes from V2
	change field order for better ring buffer utilization

 drivers/infiniband/core/mad.c |  8 ++++
 include/trace/events/ib_mad.h | 90 +++++++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+)
diff mbox series

Patch

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 3912cff864e4..53c5b3ce0fd6 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -868,6 +868,8 @@  static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
 	if (opa && smp->class_version == OPA_SM_CLASS_VERSION) {
 		u32 opa_drslid;
 
+		trace_ib_mad_handle_out_opa_smi(opa_smp);
+
 		if ((opa_get_smp_direction(opa_smp)
 		     ? opa_smp->route.dr.dr_dlid : opa_smp->route.dr.dr_slid) ==
 		     OPA_LID_PERMISSIVE &&
@@ -893,6 +895,8 @@  static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
 		    opa_smi_check_local_returning_smp(opa_smp, device) == IB_SMI_DISCARD)
 			goto out;
 	} else {
+		trace_ib_mad_handle_out_ib_smi(smp);
+
 		if ((ib_get_smp_direction(smp) ? smp->dr_dlid : smp->dr_slid) ==
 		     IB_LID_PERMISSIVE &&
 		     smi_handle_dr_smp_send(smp, rdma_cap_ib_switch(device), port_num) ==
@@ -2132,6 +2136,8 @@  static enum smi_action handle_ib_smi(const struct ib_mad_port_private *port_priv
 	enum smi_forward_action retsmi;
 	struct ib_smp *smp = (struct ib_smp *)recv->mad;
 
+	trace_ib_mad_handle_ib_smi(smp);
+
 	if (smi_handle_dr_smp_recv(smp,
 				   rdma_cap_ib_switch(port_priv->device),
 				   port_num,
@@ -2217,6 +2223,8 @@  handle_opa_smi(struct ib_mad_port_private *port_priv,
 	enum smi_forward_action retsmi;
 	struct opa_smp *smp = (struct opa_smp *)recv->mad;
 
+	trace_ib_mad_handle_opa_smi(smp);
+
 	if (opa_smi_handle_dr_smp_recv(smp,
 				   rdma_cap_ib_switch(port_priv->device),
 				   port_num,
diff --git a/include/trace/events/ib_mad.h b/include/trace/events/ib_mad.h
index 35a111fce3cf..9d048095f482 100644
--- a/include/trace/events/ib_mad.h
+++ b/include/trace/events/ib_mad.h
@@ -267,6 +267,96 @@  DEFINE_EVENT(ib_mad_agent_template, ib_mad_unregister_agent,
 	TP_ARGS(agent));
 
 
+
+DECLARE_EVENT_CLASS(ib_mad_opa_smi_template,
+	TP_PROTO(struct opa_smp *smp),
+	TP_ARGS(smp),
+
+	TP_STRUCT__entry(
+		__field(u64,            mkey)
+		__field(u32,            dr_slid)
+		__field(u32,            dr_dlid)
+		__field(u8,             hop_ptr)
+		__field(u8,             hop_cnt)
+		__array(u8,             initial_path, OPA_SMP_MAX_PATH_HOPS)
+		__array(u8,             return_path, OPA_SMP_MAX_PATH_HOPS)
+	),
+
+	TP_fast_assign(
+		__entry->hop_ptr = smp->hop_ptr;
+		__entry->hop_cnt = smp->hop_cnt;
+		__entry->mkey = smp->mkey;
+		__entry->dr_slid = smp->route.dr.dr_slid;
+		__entry->dr_dlid = smp->route.dr.dr_dlid;
+		memcpy(__entry->initial_path, smp->route.dr.initial_path,
+			OPA_SMP_MAX_PATH_HOPS);
+		memcpy(__entry->return_path, smp->route.dr.return_path,
+			OPA_SMP_MAX_PATH_HOPS);
+	),
+
+	TP_printk("OPA SMP: hop_ptr %d hop_cnt %d " \
+		  "mkey 0x%016llx dr_slid 0x%08x dr_dlid 0x%08x " \
+		  "initial_path %*ph return_path %*ph ",
+		__entry->hop_ptr, __entry->hop_cnt,
+		be64_to_cpu(__entry->mkey), be32_to_cpu(__entry->dr_slid),
+		be32_to_cpu(__entry->dr_dlid),
+		OPA_SMP_MAX_PATH_HOPS, __entry->initial_path,
+		OPA_SMP_MAX_PATH_HOPS, __entry->return_path
+	)
+);
+
+DEFINE_EVENT(ib_mad_opa_smi_template, ib_mad_handle_opa_smi,
+	TP_PROTO(struct opa_smp *smp),
+	TP_ARGS(smp));
+DEFINE_EVENT(ib_mad_opa_smi_template, ib_mad_handle_out_opa_smi,
+	TP_PROTO(struct opa_smp *smp),
+	TP_ARGS(smp));
+
+
+DECLARE_EVENT_CLASS(ib_mad_opa_ib_template,
+	TP_PROTO(struct ib_smp *smp),
+	TP_ARGS(smp),
+
+	TP_STRUCT__entry(
+		__field(u64,            mkey)
+		__field(u32,            dr_slid)
+		__field(u32,            dr_dlid)
+		__field(u8,             hop_ptr)
+		__field(u8,             hop_cnt)
+		__array(u8,             initial_path, IB_SMP_MAX_PATH_HOPS)
+		__array(u8,             return_path, IB_SMP_MAX_PATH_HOPS)
+	),
+
+	TP_fast_assign(
+		__entry->hop_ptr = smp->hop_ptr;
+		__entry->hop_cnt = smp->hop_cnt;
+		__entry->mkey = smp->mkey;
+		__entry->dr_slid = smp->dr_slid;
+		__entry->dr_dlid = smp->dr_dlid;
+		memcpy(__entry->initial_path, smp->initial_path,
+			IB_SMP_MAX_PATH_HOPS);
+		memcpy(__entry->return_path, smp->return_path,
+			IB_SMP_MAX_PATH_HOPS);
+	),
+
+	TP_printk("OPA SMP: hop_ptr %d hop_cnt %d " \
+		  "mkey 0x%016llx dr_slid 0x%04x dr_dlid 0x%04x " \
+		  "initial_path %*ph return_path %*ph ",
+		__entry->hop_ptr, __entry->hop_cnt,
+		be64_to_cpu(__entry->mkey), be16_to_cpu(__entry->dr_slid),
+		be16_to_cpu(__entry->dr_dlid),
+		IB_SMP_MAX_PATH_HOPS, __entry->initial_path,
+		IB_SMP_MAX_PATH_HOPS, __entry->return_path
+	)
+);
+
+DEFINE_EVENT(ib_mad_opa_ib_template, ib_mad_handle_ib_smi,
+	TP_PROTO(struct ib_smp *smp),
+	TP_ARGS(smp));
+DEFINE_EVENT(ib_mad_opa_ib_template, ib_mad_handle_out_ib_smi,
+	TP_PROTO(struct ib_smp *smp),
+	TP_ARGS(smp));
+
 #endif /* _TRACE_IB_MAD_H */
 
 #include <trace/define_trace.h>