IB/MAD: Add recv path trace point

Trace received MAD details.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 2acb44b..7164db3 100644 (file)
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2305,6 +2305,9 @@ static void ib_mad_recv_done(struct ib_cq *cq, struct ib_wc *wc)
        if (!validate_mad((const struct ib_mad_hdr *)recv->mad, qp_info, opa))
                goto out;
 
+       trace_ib_mad_recv_done_handler(qp_info, wc,
+                                      (struct ib_mad_hdr *)recv->mad);
+
        mad_size = recv->mad_size;
        response = alloc_mad_private(mad_size, GFP_KERNEL);
        if (!response)

diff --git a/include/trace/events/ib_mad.h b/include/trace/events/ib_mad.h
index 585028f..245a916 100644 (file)
--- a/include/trace/events/ib_mad.h
+++ b/include/trace/events/ib_mad.h
@@ -181,6 +181,73 @@ TRACE_EVENT(ib_mad_send_done_handler,
        )
 );
 
+TRACE_EVENT(ib_mad_recv_done_handler,
+       TP_PROTO(struct ib_mad_qp_info *qp_info, struct ib_wc *wc,
+                struct ib_mad_hdr *mad_hdr),
+       TP_ARGS(qp_info, wc, mad_hdr),
+
+       TP_STRUCT__entry(
+               __field(u8,             base_version)
+               __field(u8,             mgmt_class)
+               __field(u8,             class_version)
+               __field(u8,             port_num)
+               __field(u32,            qp_num)
+               __field(u16,            status)
+               __field(u16,            class_specific)
+               __field(u32,            length)
+               __field(u64,            tid)
+               __field(u8,             method)
+               __field(u8,             sl)
+               __field(u16,            attr_id)
+               __field(u32,            attr_mod)
+               __field(u16,            src_qp)
+               __field(u16,            wc_status)
+               __field(u32,            slid)
+               __field(u32,            dev_index)
+               __field(u16,            pkey)
+       ),
+
+       TP_fast_assign(
+               __entry->dev_index = qp_info->port_priv->device->index;
+               __entry->port_num = qp_info->port_priv->port_num;
+               __entry->qp_num = qp_info->qp->qp_num;
+               __entry->length = wc->byte_len;
+               __entry->base_version = mad_hdr->base_version;
+               __entry->mgmt_class = mad_hdr->mgmt_class;
+               __entry->class_version = mad_hdr->class_version;
+               __entry->method = mad_hdr->method;
+               __entry->status = mad_hdr->status;
+               __entry->class_specific = mad_hdr->class_specific;
+               __entry->tid = mad_hdr->tid;
+               __entry->attr_id = mad_hdr->attr_id;
+               __entry->attr_mod = mad_hdr->attr_mod;
+               __entry->slid = wc->slid;
+               __entry->src_qp = wc->src_qp;
+               __entry->sl = wc->sl;
+               ib_query_pkey(qp_info->port_priv->device,
+                             qp_info->port_priv->port_num,
+                             wc->pkey_index, &__entry->pkey);
+               __entry->wc_status = wc->status;
+       ),
+
+       TP_printk("%d:%d QP%d : RECV WC Status %d : length %d : hdr : " \
+                 "base_ver 0x%02x class 0x%02x class_ver 0x%02x " \
+                 "method 0x%02x status 0x%04x class_specific 0x%04x " \
+                 "tid 0x%016llx attr_id 0x%04x attr_mod 0x%08x " \
+                 "slid 0x%08x src QP%d, sl %d pkey 0x%04x",
+               __entry->dev_index, __entry->port_num, __entry->qp_num,
+               __entry->wc_status,
+               __entry->length,
+               __entry->base_version, __entry->mgmt_class,
+               __entry->class_version, __entry->method,
+               be16_to_cpu(__entry->status),
+               be16_to_cpu(__entry->class_specific),
+               be64_to_cpu(__entry->tid), be16_to_cpu(__entry->attr_id),
+               be32_to_cpu(__entry->attr_mod),
+               __entry->slid, __entry->src_qp, __entry->sl, __entry->pkey
+       )
+);
+
 
 #endif /* _TRACE_IB_MAD_H */