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: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise
Roland Dreier
parent
a7d834c4bc
commit
7f624d023b
2 changed files with 173 additions and 0 deletions
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@ -663,6 +663,120 @@ static struct class ib_class = {
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.dev_uevent = ib_device_uevent,
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};
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/* Show a given an attribute in the statistics group */
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static ssize_t show_protocol_stat(const struct device *device,
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struct device_attribute *attr, char *buf,
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unsigned offset)
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{
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struct ib_device *dev = container_of(device, struct ib_device, dev);
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union rdma_protocol_stats stats;
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ssize_t ret;
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ret = dev->get_protocol_stats(dev, &stats);
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if (ret)
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return ret;
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return sprintf(buf, "%llu\n",
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(unsigned long long) ((u64 *) &stats)[offset]);
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}
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/* generate a read-only iwarp statistics attribute */
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#define IW_STATS_ENTRY(name) \
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static ssize_t show_##name(struct device *device, \
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struct device_attribute *attr, char *buf) \
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{ \
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return show_protocol_stat(device, attr, buf, \
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offsetof(struct iw_protocol_stats, name) / \
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sizeof (u64)); \
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} \
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static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
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IW_STATS_ENTRY(ipInReceives);
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IW_STATS_ENTRY(ipInHdrErrors);
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IW_STATS_ENTRY(ipInTooBigErrors);
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IW_STATS_ENTRY(ipInNoRoutes);
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IW_STATS_ENTRY(ipInAddrErrors);
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IW_STATS_ENTRY(ipInUnknownProtos);
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IW_STATS_ENTRY(ipInTruncatedPkts);
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IW_STATS_ENTRY(ipInDiscards);
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IW_STATS_ENTRY(ipInDelivers);
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IW_STATS_ENTRY(ipOutForwDatagrams);
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IW_STATS_ENTRY(ipOutRequests);
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IW_STATS_ENTRY(ipOutDiscards);
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IW_STATS_ENTRY(ipOutNoRoutes);
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IW_STATS_ENTRY(ipReasmTimeout);
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IW_STATS_ENTRY(ipReasmReqds);
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IW_STATS_ENTRY(ipReasmOKs);
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IW_STATS_ENTRY(ipReasmFails);
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IW_STATS_ENTRY(ipFragOKs);
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IW_STATS_ENTRY(ipFragFails);
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IW_STATS_ENTRY(ipFragCreates);
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IW_STATS_ENTRY(ipInMcastPkts);
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IW_STATS_ENTRY(ipOutMcastPkts);
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IW_STATS_ENTRY(ipInBcastPkts);
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IW_STATS_ENTRY(ipOutBcastPkts);
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IW_STATS_ENTRY(tcpRtoAlgorithm);
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IW_STATS_ENTRY(tcpRtoMin);
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IW_STATS_ENTRY(tcpRtoMax);
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IW_STATS_ENTRY(tcpMaxConn);
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IW_STATS_ENTRY(tcpActiveOpens);
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IW_STATS_ENTRY(tcpPassiveOpens);
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IW_STATS_ENTRY(tcpAttemptFails);
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IW_STATS_ENTRY(tcpEstabResets);
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IW_STATS_ENTRY(tcpCurrEstab);
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IW_STATS_ENTRY(tcpInSegs);
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IW_STATS_ENTRY(tcpOutSegs);
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IW_STATS_ENTRY(tcpRetransSegs);
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IW_STATS_ENTRY(tcpInErrs);
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IW_STATS_ENTRY(tcpOutRsts);
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static struct attribute *iw_proto_stats_attrs[] = {
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&dev_attr_ipInReceives.attr,
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&dev_attr_ipInHdrErrors.attr,
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&dev_attr_ipInTooBigErrors.attr,
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&dev_attr_ipInNoRoutes.attr,
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&dev_attr_ipInAddrErrors.attr,
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&dev_attr_ipInUnknownProtos.attr,
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&dev_attr_ipInTruncatedPkts.attr,
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&dev_attr_ipInDiscards.attr,
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&dev_attr_ipInDelivers.attr,
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&dev_attr_ipOutForwDatagrams.attr,
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&dev_attr_ipOutRequests.attr,
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&dev_attr_ipOutDiscards.attr,
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&dev_attr_ipOutNoRoutes.attr,
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&dev_attr_ipReasmTimeout.attr,
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&dev_attr_ipReasmReqds.attr,
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&dev_attr_ipReasmOKs.attr,
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&dev_attr_ipReasmFails.attr,
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&dev_attr_ipFragOKs.attr,
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&dev_attr_ipFragFails.attr,
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&dev_attr_ipFragCreates.attr,
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&dev_attr_ipInMcastPkts.attr,
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&dev_attr_ipOutMcastPkts.attr,
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&dev_attr_ipInBcastPkts.attr,
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&dev_attr_ipOutBcastPkts.attr,
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&dev_attr_tcpRtoAlgorithm.attr,
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&dev_attr_tcpRtoMin.attr,
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&dev_attr_tcpRtoMax.attr,
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&dev_attr_tcpMaxConn.attr,
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&dev_attr_tcpActiveOpens.attr,
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&dev_attr_tcpPassiveOpens.attr,
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&dev_attr_tcpAttemptFails.attr,
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&dev_attr_tcpEstabResets.attr,
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&dev_attr_tcpCurrEstab.attr,
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&dev_attr_tcpInSegs.attr,
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&dev_attr_tcpOutSegs.attr,
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&dev_attr_tcpRetransSegs.attr,
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&dev_attr_tcpInErrs.attr,
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&dev_attr_tcpOutRsts.attr,
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NULL
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};
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static struct attribute_group iw_stats_group = {
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.name = "proto_stats",
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.attrs = iw_proto_stats_attrs,
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};
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int ib_device_register_sysfs(struct ib_device *device)
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{
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struct device *class_dev = &device->dev;
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@ -705,6 +819,12 @@ int ib_device_register_sysfs(struct ib_device *device)
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}
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}
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if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
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ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
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if (ret)
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goto err_put;
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}
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return 0;
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err_put:
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@ -226,6 +226,57 @@ static inline int ib_width_enum_to_int(enum ib_port_width width)
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}
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}
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struct ib_protocol_stats {
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/* TBD... */
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};
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struct iw_protocol_stats {
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u64 ipInReceives;
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u64 ipInHdrErrors;
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u64 ipInTooBigErrors;
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u64 ipInNoRoutes;
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u64 ipInAddrErrors;
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u64 ipInUnknownProtos;
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u64 ipInTruncatedPkts;
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u64 ipInDiscards;
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u64 ipInDelivers;
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u64 ipOutForwDatagrams;
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u64 ipOutRequests;
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u64 ipOutDiscards;
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u64 ipOutNoRoutes;
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u64 ipReasmTimeout;
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u64 ipReasmReqds;
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u64 ipReasmOKs;
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u64 ipReasmFails;
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u64 ipFragOKs;
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u64 ipFragFails;
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u64 ipFragCreates;
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u64 ipInMcastPkts;
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u64 ipOutMcastPkts;
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u64 ipInBcastPkts;
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u64 ipOutBcastPkts;
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u64 tcpRtoAlgorithm;
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u64 tcpRtoMin;
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u64 tcpRtoMax;
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u64 tcpMaxConn;
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u64 tcpActiveOpens;
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u64 tcpPassiveOpens;
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u64 tcpAttemptFails;
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u64 tcpEstabResets;
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u64 tcpCurrEstab;
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u64 tcpInSegs;
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u64 tcpOutSegs;
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u64 tcpRetransSegs;
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u64 tcpInErrs;
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u64 tcpOutRsts;
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};
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union rdma_protocol_stats {
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struct ib_protocol_stats ib;
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struct iw_protocol_stats iw;
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};
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struct ib_port_attr {
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enum ib_port_state state;
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enum ib_mtu max_mtu;
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@ -943,6 +994,8 @@ struct ib_device {
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struct iw_cm_verbs *iwcm;
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int (*get_protocol_stats)(struct ib_device *device,
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union rdma_protocol_stats *stats);
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int (*query_device)(struct ib_device *device,
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struct ib_device_attr *device_attr);
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int (*query_port)(struct ib_device *device,
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