Commit 7f624d02 authored by Steve Wise's avatar Steve Wise Committed by Roland Dreier
Browse files

RDMA/core: Add iWARP protocol statistics attributes in sysfs 



This patch adds a sysfs attribute group called "proto_stats" under
/sys/class/infiniband/$device/ and populates this group with protocol
statistics if they exist for a given device.  Currently, only iWARP
stats are defined, but the code is designed to allow InfiniBand
protocol stats if they become available.  These stats are per-device
and more importantly -not- per port.

Details:

- Add union rdma_protocol_stats in ib_verbs.h.  This union allows
  defining transport-specific stats.  Currently only iwarp stats are
  defined.

- Add struct iw_protocol_stats to define the current set of iwarp
  protocol stats.

- Add new ib_device method called get_proto_stats() to return protocol
  statistics.

- Add logic in core/sysfs.c to create iwarp protocol stats attributes
  if the device is an RNIC and has a get_proto_stats() method.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent a7d834c4

drivers/infiniband/core/sysfs.c

+120 −0
Original line number Diff line number Diff line
@@ -663,6 +663,120 @@ static struct class ib_class = { 
	.dev_uevent = ib_device_uevent,

};



/* Show a given an attribute in the statistics group */

static ssize_t show_protocol_stat(const struct device *device,

			    struct device_attribute *attr, char *buf,

			    unsigned offset)

{

	struct ib_device *dev = container_of(device, struct ib_device, dev);

	union rdma_protocol_stats stats;

	ssize_t ret;



	ret = dev->get_protocol_stats(dev, &stats);

	if (ret)

		return ret;



	return sprintf(buf, "%llu\n",

		       (unsigned long long) ((u64 *) &stats)[offset]);

}



/* generate a read-only iwarp statistics attribute */

#define IW_STATS_ENTRY(name)						\

static ssize_t show_##name(struct device *device,			\

			   struct device_attribute *attr, char *buf)	\

{									\

	return show_protocol_stat(device, attr, buf,			\

				  offsetof(struct iw_protocol_stats, name) / \

				  sizeof (u64));			\

}									\

static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)



IW_STATS_ENTRY(ipInReceives);

IW_STATS_ENTRY(ipInHdrErrors);

IW_STATS_ENTRY(ipInTooBigErrors);

IW_STATS_ENTRY(ipInNoRoutes);

IW_STATS_ENTRY(ipInAddrErrors);

IW_STATS_ENTRY(ipInUnknownProtos);

IW_STATS_ENTRY(ipInTruncatedPkts);

IW_STATS_ENTRY(ipInDiscards);

IW_STATS_ENTRY(ipInDelivers);

IW_STATS_ENTRY(ipOutForwDatagrams);

IW_STATS_ENTRY(ipOutRequests);

IW_STATS_ENTRY(ipOutDiscards);

IW_STATS_ENTRY(ipOutNoRoutes);

IW_STATS_ENTRY(ipReasmTimeout);

IW_STATS_ENTRY(ipReasmReqds);

IW_STATS_ENTRY(ipReasmOKs);

IW_STATS_ENTRY(ipReasmFails);

IW_STATS_ENTRY(ipFragOKs);

IW_STATS_ENTRY(ipFragFails);

IW_STATS_ENTRY(ipFragCreates);

IW_STATS_ENTRY(ipInMcastPkts);

IW_STATS_ENTRY(ipOutMcastPkts);

IW_STATS_ENTRY(ipInBcastPkts);

IW_STATS_ENTRY(ipOutBcastPkts);

IW_STATS_ENTRY(tcpRtoAlgorithm);

IW_STATS_ENTRY(tcpRtoMin);

IW_STATS_ENTRY(tcpRtoMax);

IW_STATS_ENTRY(tcpMaxConn);

IW_STATS_ENTRY(tcpActiveOpens);

IW_STATS_ENTRY(tcpPassiveOpens);

IW_STATS_ENTRY(tcpAttemptFails);

IW_STATS_ENTRY(tcpEstabResets);

IW_STATS_ENTRY(tcpCurrEstab);

IW_STATS_ENTRY(tcpInSegs);

IW_STATS_ENTRY(tcpOutSegs);

IW_STATS_ENTRY(tcpRetransSegs);

IW_STATS_ENTRY(tcpInErrs);

IW_STATS_ENTRY(tcpOutRsts);



static struct attribute *iw_proto_stats_attrs[] = {

	&dev_attr_ipInReceives.attr,

	&dev_attr_ipInHdrErrors.attr,

	&dev_attr_ipInTooBigErrors.attr,

	&dev_attr_ipInNoRoutes.attr,

	&dev_attr_ipInAddrErrors.attr,

	&dev_attr_ipInUnknownProtos.attr,

	&dev_attr_ipInTruncatedPkts.attr,

	&dev_attr_ipInDiscards.attr,

	&dev_attr_ipInDelivers.attr,

	&dev_attr_ipOutForwDatagrams.attr,

	&dev_attr_ipOutRequests.attr,

	&dev_attr_ipOutDiscards.attr,

	&dev_attr_ipOutNoRoutes.attr,

	&dev_attr_ipReasmTimeout.attr,

	&dev_attr_ipReasmReqds.attr,

	&dev_attr_ipReasmOKs.attr,

	&dev_attr_ipReasmFails.attr,

	&dev_attr_ipFragOKs.attr,

	&dev_attr_ipFragFails.attr,

	&dev_attr_ipFragCreates.attr,

	&dev_attr_ipInMcastPkts.attr,

	&dev_attr_ipOutMcastPkts.attr,

	&dev_attr_ipInBcastPkts.attr,

	&dev_attr_ipOutBcastPkts.attr,

	&dev_attr_tcpRtoAlgorithm.attr,

	&dev_attr_tcpRtoMin.attr,

	&dev_attr_tcpRtoMax.attr,

	&dev_attr_tcpMaxConn.attr,

	&dev_attr_tcpActiveOpens.attr,

	&dev_attr_tcpPassiveOpens.attr,

	&dev_attr_tcpAttemptFails.attr,

	&dev_attr_tcpEstabResets.attr,

	&dev_attr_tcpCurrEstab.attr,

	&dev_attr_tcpInSegs.attr,

	&dev_attr_tcpOutSegs.attr,

	&dev_attr_tcpRetransSegs.attr,

	&dev_attr_tcpInErrs.attr,

	&dev_attr_tcpOutRsts.attr,

	NULL

};



static struct attribute_group iw_stats_group = {

	.name	= "proto_stats",

	.attrs	= iw_proto_stats_attrs,

};



int ib_device_register_sysfs(struct ib_device *device)

{

	struct device *class_dev = &device->dev;
@@ -705,6 +819,12 @@ int ib_device_register_sysfs(struct ib_device *device) 
		}

	}



	if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {

		ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);

		if (ret)

			goto err_put;

	}



	return 0;



err_put:

include/rdma/ib_verbs.h

+53 −0
Original line number Diff line number Diff line
@@ -226,6 +226,57 @@ static inline int ib_width_enum_to_int(enum ib_port_width width) 
	}

}



struct ib_protocol_stats {

	/* TBD... */

};



struct iw_protocol_stats {

	u64	ipInReceives;

	u64	ipInHdrErrors;

	u64	ipInTooBigErrors;

	u64	ipInNoRoutes;

	u64	ipInAddrErrors;

	u64	ipInUnknownProtos;

	u64	ipInTruncatedPkts;

	u64	ipInDiscards;

	u64	ipInDelivers;

	u64	ipOutForwDatagrams;

	u64	ipOutRequests;

	u64	ipOutDiscards;

	u64	ipOutNoRoutes;

	u64	ipReasmTimeout;

	u64	ipReasmReqds;

	u64	ipReasmOKs;

	u64	ipReasmFails;

	u64	ipFragOKs;

	u64	ipFragFails;

	u64	ipFragCreates;

	u64	ipInMcastPkts;

	u64	ipOutMcastPkts;

	u64	ipInBcastPkts;

	u64	ipOutBcastPkts;



	u64	tcpRtoAlgorithm;

	u64	tcpRtoMin;

	u64	tcpRtoMax;

	u64	tcpMaxConn;

	u64	tcpActiveOpens;

	u64	tcpPassiveOpens;

	u64	tcpAttemptFails;

	u64	tcpEstabResets;

	u64	tcpCurrEstab;

	u64	tcpInSegs;

	u64	tcpOutSegs;

	u64	tcpRetransSegs;

	u64	tcpInErrs;

	u64	tcpOutRsts;

};



union rdma_protocol_stats {

	struct ib_protocol_stats	ib;

	struct iw_protocol_stats	iw;

};



struct ib_port_attr {

	enum ib_port_state	state;

	enum ib_mtu		max_mtu;
@@ -943,6 +994,8 @@ struct ib_device { 


	struct iw_cm_verbs	     *iwcm;



	int		           (*get_protocol_stats)(struct ib_device *device,

							 union rdma_protocol_stats *stats);

	int		           (*query_device)(struct ib_device *device,

						   struct ib_device_attr *device_attr);

	int		           (*query_port)(struct ib_device *device,

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