2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include "core_priv.h"
37 #include <linux/slab.h>
38 #include <linux/stat.h>
39 #include <linux/string.h>
40 #include <linux/netdevice.h>
41 #include <linux/ethtool.h>
43 #include <rdma/ib_mad.h>
44 #include <rdma/ib_pma.h>
45 #include <rdma/ib_cache.h>
46 #include <rdma/rdma_counter.h>
50 struct gid_attr_group {
53 struct attribute_group ndev;
54 struct attribute_group type;
58 struct ib_device *ibdev;
59 struct gid_attr_group *gid_attr_group;
60 struct attribute_group gid_group;
61 struct attribute_group *pkey_group;
62 struct attribute_group *pma_table;
63 struct attribute_group *hw_stats_ag;
64 struct rdma_hw_stats *hw_stats;
68 struct port_attribute {
69 struct attribute attr;
70 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
71 ssize_t (*store)(struct ib_port *, struct port_attribute *,
72 const char *buf, size_t count);
75 #define PORT_ATTR(_name, _mode, _show, _store) \
76 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
78 #define PORT_ATTR_RO(_name) \
79 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
81 struct port_table_attribute {
82 struct port_attribute attr;
88 struct hw_stats_attribute {
89 struct attribute attr;
90 ssize_t (*show)(struct kobject *kobj,
91 struct attribute *attr, char *buf);
92 ssize_t (*store)(struct kobject *kobj,
93 struct attribute *attr,
100 static ssize_t port_attr_show(struct kobject *kobj,
101 struct attribute *attr, char *buf)
103 struct port_attribute *port_attr =
104 container_of(attr, struct port_attribute, attr);
105 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
107 if (!port_attr->show)
110 return port_attr->show(p, port_attr, buf);
113 static ssize_t port_attr_store(struct kobject *kobj,
114 struct attribute *attr,
115 const char *buf, size_t count)
117 struct port_attribute *port_attr =
118 container_of(attr, struct port_attribute, attr);
119 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
121 if (!port_attr->store)
123 return port_attr->store(p, port_attr, buf, count);
126 static const struct sysfs_ops port_sysfs_ops = {
127 .show = port_attr_show,
128 .store = port_attr_store
131 static ssize_t gid_attr_show(struct kobject *kobj,
132 struct attribute *attr, char *buf)
134 struct port_attribute *port_attr =
135 container_of(attr, struct port_attribute, attr);
136 struct ib_port *p = container_of(kobj, struct gid_attr_group,
139 if (!port_attr->show)
142 return port_attr->show(p, port_attr, buf);
145 static const struct sysfs_ops gid_attr_sysfs_ops = {
146 .show = gid_attr_show
149 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
152 struct ib_port_attr attr;
155 static const char *state_name[] = {
156 [IB_PORT_NOP] = "NOP",
157 [IB_PORT_DOWN] = "DOWN",
158 [IB_PORT_INIT] = "INIT",
159 [IB_PORT_ARMED] = "ARMED",
160 [IB_PORT_ACTIVE] = "ACTIVE",
161 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
164 ret = ib_query_port(p->ibdev, p->port_num, &attr);
168 return sprintf(buf, "%d: %s\n", attr.state,
169 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
170 state_name[attr.state] : "UNKNOWN");
173 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
176 struct ib_port_attr attr;
179 ret = ib_query_port(p->ibdev, p->port_num, &attr);
183 return sprintf(buf, "0x%x\n", attr.lid);
186 static ssize_t lid_mask_count_show(struct ib_port *p,
187 struct port_attribute *unused,
190 struct ib_port_attr attr;
193 ret = ib_query_port(p->ibdev, p->port_num, &attr);
197 return sprintf(buf, "%d\n", attr.lmc);
200 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
203 struct ib_port_attr attr;
206 ret = ib_query_port(p->ibdev, p->port_num, &attr);
210 return sprintf(buf, "0x%x\n", attr.sm_lid);
213 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
216 struct ib_port_attr attr;
219 ret = ib_query_port(p->ibdev, p->port_num, &attr);
223 return sprintf(buf, "%d\n", attr.sm_sl);
226 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
229 struct ib_port_attr attr;
232 ret = ib_query_port(p->ibdev, p->port_num, &attr);
236 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
239 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
242 struct ib_port_attr attr;
244 int rate; /* in deci-Gb/sec */
247 ret = ib_query_port(p->ibdev, p->port_num, &attr);
251 switch (attr.active_speed) {
277 default: /* default to SDR for invalid rates */
283 rate *= ib_width_enum_to_int(attr.active_width);
287 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
288 rate / 10, rate % 10 ? ".5" : "",
289 ib_width_enum_to_int(attr.active_width), speed);
292 static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
294 static const char * phys_state_str[] = {
299 "PortConfigurationTraining",
305 if (phys_state < ARRAY_SIZE(phys_state_str))
306 return phys_state_str[phys_state];
310 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
313 struct ib_port_attr attr;
317 ret = ib_query_port(p->ibdev, p->port_num, &attr);
321 return sprintf(buf, "%d: %s\n", attr.phys_state,
322 phys_state_to_str(attr.phys_state));
325 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
328 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
329 case IB_LINK_LAYER_INFINIBAND:
330 return sprintf(buf, "%s\n", "InfiniBand");
331 case IB_LINK_LAYER_ETHERNET:
332 return sprintf(buf, "%s\n", "Ethernet");
334 return sprintf(buf, "%s\n", "Unknown");
338 static PORT_ATTR_RO(state);
339 static PORT_ATTR_RO(lid);
340 static PORT_ATTR_RO(lid_mask_count);
341 static PORT_ATTR_RO(sm_lid);
342 static PORT_ATTR_RO(sm_sl);
343 static PORT_ATTR_RO(cap_mask);
344 static PORT_ATTR_RO(rate);
345 static PORT_ATTR_RO(phys_state);
346 static PORT_ATTR_RO(link_layer);
348 static struct attribute *port_default_attrs[] = {
349 &port_attr_state.attr,
351 &port_attr_lid_mask_count.attr,
352 &port_attr_sm_lid.attr,
353 &port_attr_sm_sl.attr,
354 &port_attr_cap_mask.attr,
355 &port_attr_rate.attr,
356 &port_attr_phys_state.attr,
357 &port_attr_link_layer.attr,
361 static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
363 struct net_device *ndev;
364 size_t ret = -EINVAL;
367 ndev = rcu_dereference(gid_attr->ndev);
369 ret = sprintf(buf, "%s\n", ndev->name);
374 static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
376 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
379 static ssize_t _show_port_gid_attr(
380 struct ib_port *p, struct port_attribute *attr, char *buf,
381 size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
383 struct port_table_attribute *tab_attr =
384 container_of(attr, struct port_table_attribute, attr);
385 const struct ib_gid_attr *gid_attr;
388 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
389 if (IS_ERR(gid_attr))
390 return PTR_ERR(gid_attr);
392 ret = print(gid_attr, buf);
393 rdma_put_gid_attr(gid_attr);
397 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
400 struct port_table_attribute *tab_attr =
401 container_of(attr, struct port_table_attribute, attr);
402 const struct ib_gid_attr *gid_attr;
405 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
406 if (IS_ERR(gid_attr)) {
407 const union ib_gid zgid = {};
409 /* If reading GID fails, it is likely due to GID entry being
410 * empty (invalid) or reserved GID in the table. User space
411 * expects to read GID table entries as long as it given index
412 * is within GID table size. Administrative/debugging tool
413 * fails to query rest of the GID entries if it hits error
414 * while querying a GID of the given index. To avoid user
415 * space throwing such error on fail to read gid, return zero
416 * GID as before. This maintains backward compatibility.
418 return sprintf(buf, "%pI6\n", zgid.raw);
421 ret = sprintf(buf, "%pI6\n", gid_attr->gid.raw);
422 rdma_put_gid_attr(gid_attr);
426 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
427 struct port_attribute *attr, char *buf)
429 return _show_port_gid_attr(p, attr, buf, print_ndev);
432 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
433 struct port_attribute *attr,
436 return _show_port_gid_attr(p, attr, buf, print_gid_type);
439 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
442 struct port_table_attribute *tab_attr =
443 container_of(attr, struct port_table_attribute, attr);
447 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
451 return sprintf(buf, "0x%04x\n", pkey);
454 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
455 struct port_table_attribute port_pma_attr_##_name = { \
456 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
457 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
458 .attr_id = IB_PMA_PORT_COUNTERS , \
461 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
462 struct port_table_attribute port_pma_attr_ext_##_name = { \
463 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
464 .index = (_offset) | ((_width) << 16), \
465 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
469 * Get a Perfmgmt MAD block of data.
470 * Returns error code or the number of bytes retrieved.
472 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
473 void *data, int offset, size_t size)
475 struct ib_mad *in_mad;
476 struct ib_mad *out_mad;
477 size_t mad_size = sizeof(*out_mad);
478 u16 out_mad_pkey_index = 0;
481 if (!dev->ops.process_mad)
484 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
485 out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
486 if (!in_mad || !out_mad) {
491 in_mad->mad_hdr.base_version = 1;
492 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
493 in_mad->mad_hdr.class_version = 1;
494 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
495 in_mad->mad_hdr.attr_id = attr;
497 if (attr != IB_PMA_CLASS_PORT_INFO)
498 in_mad->data[41] = port_num; /* PortSelect field */
500 if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
501 in_mad, out_mad, &mad_size,
502 &out_mad_pkey_index) &
503 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
504 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
508 memcpy(data, out_mad->data + offset, size);
516 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
519 struct port_table_attribute *tab_attr =
520 container_of(attr, struct port_table_attribute, attr);
521 int offset = tab_attr->index & 0xffff;
522 int width = (tab_attr->index >> 16) & 0xff;
526 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
527 40 + offset / 8, sizeof(data));
533 ret = sprintf(buf, "%u\n", (*data >>
534 (4 - (offset % 8))) & 0xf);
537 ret = sprintf(buf, "%u\n", *data);
540 ret = sprintf(buf, "%u\n",
541 be16_to_cpup((__be16 *)data));
544 ret = sprintf(buf, "%u\n",
545 be32_to_cpup((__be32 *)data));
548 ret = sprintf(buf, "%llu\n",
549 be64_to_cpup((__be64 *)data));
559 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
560 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
561 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
562 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
563 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
564 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
565 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
566 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
567 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
568 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
569 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
570 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
571 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
572 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
573 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
574 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
575 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
578 * Counters added by extended set
580 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
581 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
582 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
583 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
584 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
585 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
586 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
587 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
589 static struct attribute *pma_attrs[] = {
590 &port_pma_attr_symbol_error.attr.attr,
591 &port_pma_attr_link_error_recovery.attr.attr,
592 &port_pma_attr_link_downed.attr.attr,
593 &port_pma_attr_port_rcv_errors.attr.attr,
594 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
595 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
596 &port_pma_attr_port_xmit_discards.attr.attr,
597 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
598 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
599 &port_pma_attr_local_link_integrity_errors.attr.attr,
600 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
601 &port_pma_attr_VL15_dropped.attr.attr,
602 &port_pma_attr_port_xmit_data.attr.attr,
603 &port_pma_attr_port_rcv_data.attr.attr,
604 &port_pma_attr_port_xmit_packets.attr.attr,
605 &port_pma_attr_port_rcv_packets.attr.attr,
606 &port_pma_attr_port_xmit_wait.attr.attr,
610 static struct attribute *pma_attrs_ext[] = {
611 &port_pma_attr_symbol_error.attr.attr,
612 &port_pma_attr_link_error_recovery.attr.attr,
613 &port_pma_attr_link_downed.attr.attr,
614 &port_pma_attr_port_rcv_errors.attr.attr,
615 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
616 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
617 &port_pma_attr_port_xmit_discards.attr.attr,
618 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
619 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
620 &port_pma_attr_local_link_integrity_errors.attr.attr,
621 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
622 &port_pma_attr_VL15_dropped.attr.attr,
623 &port_pma_attr_ext_port_xmit_data.attr.attr,
624 &port_pma_attr_ext_port_rcv_data.attr.attr,
625 &port_pma_attr_ext_port_xmit_packets.attr.attr,
626 &port_pma_attr_port_xmit_wait.attr.attr,
627 &port_pma_attr_ext_port_rcv_packets.attr.attr,
628 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
629 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
630 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
631 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
635 static struct attribute *pma_attrs_noietf[] = {
636 &port_pma_attr_symbol_error.attr.attr,
637 &port_pma_attr_link_error_recovery.attr.attr,
638 &port_pma_attr_link_downed.attr.attr,
639 &port_pma_attr_port_rcv_errors.attr.attr,
640 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
641 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
642 &port_pma_attr_port_xmit_discards.attr.attr,
643 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
644 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
645 &port_pma_attr_local_link_integrity_errors.attr.attr,
646 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
647 &port_pma_attr_VL15_dropped.attr.attr,
648 &port_pma_attr_ext_port_xmit_data.attr.attr,
649 &port_pma_attr_ext_port_rcv_data.attr.attr,
650 &port_pma_attr_ext_port_xmit_packets.attr.attr,
651 &port_pma_attr_ext_port_rcv_packets.attr.attr,
652 &port_pma_attr_port_xmit_wait.attr.attr,
656 static struct attribute_group pma_group = {
661 static struct attribute_group pma_group_ext = {
663 .attrs = pma_attrs_ext
666 static struct attribute_group pma_group_noietf = {
668 .attrs = pma_attrs_noietf
671 static void ib_port_release(struct kobject *kobj)
673 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
677 if (p->gid_group.attrs) {
678 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
681 kfree(p->gid_group.attrs);
685 if (p->pkey_group->attrs) {
686 for (i = 0; (a = p->pkey_group->attrs[i]); ++i)
689 kfree(p->pkey_group->attrs);
692 kfree(p->pkey_group);
693 p->pkey_group = NULL;
699 static void ib_port_gid_attr_release(struct kobject *kobj)
701 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
707 for (i = 0; (a = g->ndev.attrs[i]); ++i)
710 kfree(g->ndev.attrs);
714 for (i = 0; (a = g->type.attrs[i]); ++i)
717 kfree(g->type.attrs);
723 static struct kobj_type port_type = {
724 .release = ib_port_release,
725 .sysfs_ops = &port_sysfs_ops,
726 .default_attrs = port_default_attrs
729 static struct kobj_type gid_attr_type = {
730 .sysfs_ops = &gid_attr_sysfs_ops,
731 .release = ib_port_gid_attr_release
734 static struct attribute **
735 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
736 struct port_attribute *, char *buf),
739 struct attribute **tab_attr;
740 struct port_table_attribute *element;
743 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
747 for (i = 0; i < len; i++) {
748 element = kzalloc(sizeof(struct port_table_attribute),
753 if (snprintf(element->name, sizeof(element->name),
754 "%d", i) >= sizeof(element->name)) {
759 element->attr.attr.name = element->name;
760 element->attr.attr.mode = S_IRUGO;
761 element->attr.show = show;
763 sysfs_attr_init(&element->attr.attr);
765 tab_attr[i] = &element->attr.attr;
778 * Figure out which counter table to use depending on
779 * the device capabilities.
781 static struct attribute_group *get_counter_table(struct ib_device *dev,
784 struct ib_class_port_info cpi;
786 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
787 &cpi, 40, sizeof(cpi)) >= 0) {
788 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
789 /* We have extended counters */
790 return &pma_group_ext;
792 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
793 /* But not the IETF ones */
794 return &pma_group_noietf;
797 /* Fall back to normal counters */
801 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
802 u8 port_num, int index)
806 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
808 ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
811 if (ret == stats->num_counters)
812 stats->timestamp = jiffies;
817 static ssize_t print_hw_stat(struct ib_device *dev, int port_num,
818 struct rdma_hw_stats *stats, int index, char *buf)
820 u64 v = rdma_counter_get_hwstat_value(dev, port_num, index);
822 return sprintf(buf, "%llu\n", stats->value[index] + v);
825 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
828 struct ib_device *dev;
829 struct ib_port *port;
830 struct hw_stats_attribute *hsa;
831 struct rdma_hw_stats *stats;
834 hsa = container_of(attr, struct hw_stats_attribute, attr);
835 if (!hsa->port_num) {
836 dev = container_of((struct device *)kobj,
837 struct ib_device, dev);
838 stats = dev->hw_stats;
840 port = container_of(kobj, struct ib_port, kobj);
842 stats = port->hw_stats;
844 mutex_lock(&stats->lock);
845 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
848 ret = print_hw_stat(dev, hsa->port_num, stats, hsa->index, buf);
850 mutex_unlock(&stats->lock);
855 static ssize_t show_stats_lifespan(struct kobject *kobj,
856 struct attribute *attr,
859 struct hw_stats_attribute *hsa;
860 struct rdma_hw_stats *stats;
863 hsa = container_of(attr, struct hw_stats_attribute, attr);
864 if (!hsa->port_num) {
865 struct ib_device *dev = container_of((struct device *)kobj,
866 struct ib_device, dev);
868 stats = dev->hw_stats;
870 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
875 mutex_lock(&stats->lock);
876 msecs = jiffies_to_msecs(stats->lifespan);
877 mutex_unlock(&stats->lock);
879 return sprintf(buf, "%d\n", msecs);
882 static ssize_t set_stats_lifespan(struct kobject *kobj,
883 struct attribute *attr,
884 const char *buf, size_t count)
886 struct hw_stats_attribute *hsa;
887 struct rdma_hw_stats *stats;
892 ret = kstrtoint(buf, 10, &msecs);
895 if (msecs < 0 || msecs > 10000)
897 jiffies = msecs_to_jiffies(msecs);
898 hsa = container_of(attr, struct hw_stats_attribute, attr);
899 if (!hsa->port_num) {
900 struct ib_device *dev = container_of((struct device *)kobj,
901 struct ib_device, dev);
903 stats = dev->hw_stats;
905 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
910 mutex_lock(&stats->lock);
911 stats->lifespan = jiffies;
912 mutex_unlock(&stats->lock);
917 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
919 struct attribute **attr;
921 sysfs_remove_group(kobj, attr_group);
923 for (attr = attr_group->attrs; *attr; attr++)
928 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
930 struct hw_stats_attribute *hsa;
932 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
936 hsa->attr.name = (char *)name;
937 hsa->attr.mode = S_IRUGO;
938 hsa->show = show_hw_stats;
941 hsa->port_num = port_num;
946 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
948 struct hw_stats_attribute *hsa;
950 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
954 hsa->attr.name = name;
955 hsa->attr.mode = S_IWUSR | S_IRUGO;
956 hsa->show = show_stats_lifespan;
957 hsa->store = set_stats_lifespan;
959 hsa->port_num = port_num;
964 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
967 struct attribute_group *hsag;
968 struct rdma_hw_stats *stats;
971 stats = device->ops.alloc_hw_stats(device, port_num);
976 if (!stats->names || stats->num_counters <= 0)
980 * Two extra attribue elements here, one for the lifespan entry and
981 * one to NULL terminate the list for the sysfs core code
983 hsag = kzalloc(sizeof(*hsag) +
984 sizeof(void *) * (stats->num_counters + 2),
989 ret = device->ops.get_hw_stats(device, stats, port_num,
990 stats->num_counters);
991 if (ret != stats->num_counters)
994 stats->timestamp = jiffies;
996 hsag->name = "hw_counters";
997 hsag->attrs = (void *)hsag + sizeof(*hsag);
999 for (i = 0; i < stats->num_counters; i++) {
1000 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
1001 if (!hsag->attrs[i])
1003 sysfs_attr_init(hsag->attrs[i]);
1006 mutex_init(&stats->lock);
1007 /* treat an error here as non-fatal */
1008 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
1010 sysfs_attr_init(hsag->attrs[i]);
1013 struct kobject *kobj = &port->kobj;
1014 ret = sysfs_create_group(kobj, hsag);
1017 port->hw_stats_ag = hsag;
1018 port->hw_stats = stats;
1019 if (device->port_data)
1020 device->port_data[port_num].hw_stats = stats;
1022 struct kobject *kobj = &device->dev.kobj;
1023 ret = sysfs_create_group(kobj, hsag);
1026 device->hw_stats_ag = hsag;
1027 device->hw_stats = stats;
1034 kfree(hsag->attrs[i]);
1042 static int add_port(struct ib_core_device *coredev, int port_num)
1044 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1045 bool is_full_dev = &device->coredev == coredev;
1047 struct ib_port_attr attr;
1051 ret = ib_query_port(device, port_num, &attr);
1055 p = kzalloc(sizeof *p, GFP_KERNEL);
1060 p->port_num = port_num;
1062 ret = kobject_init_and_add(&p->kobj, &port_type,
1063 coredev->ports_kobj,
1069 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1070 if (!p->gid_attr_group) {
1075 p->gid_attr_group->port = p;
1076 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1077 &p->kobj, "gid_attrs");
1079 goto err_put_gid_attrs;
1082 if (device->ops.process_mad && is_full_dev) {
1083 p->pma_table = get_counter_table(device, port_num);
1084 ret = sysfs_create_group(&p->kobj, p->pma_table);
1086 goto err_put_gid_attrs;
1089 p->gid_group.name = "gids";
1090 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1091 if (!p->gid_group.attrs) {
1093 goto err_remove_pma;
1096 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1100 p->gid_attr_group->ndev.name = "ndevs";
1101 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1103 if (!p->gid_attr_group->ndev.attrs) {
1105 goto err_remove_gid;
1108 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1109 &p->gid_attr_group->ndev);
1111 goto err_free_gid_ndev;
1113 p->gid_attr_group->type.name = "types";
1114 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1116 if (!p->gid_attr_group->type.attrs) {
1118 goto err_remove_gid_ndev;
1121 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1122 &p->gid_attr_group->type);
1124 goto err_free_gid_type;
1126 if (attr.pkey_tbl_len) {
1127 p->pkey_group = kzalloc(sizeof(*p->pkey_group), GFP_KERNEL);
1128 if (!p->pkey_group) {
1130 goto err_remove_gid_type;
1133 p->pkey_group->name = "pkeys";
1134 p->pkey_group->attrs = alloc_group_attrs(show_port_pkey,
1136 if (!p->pkey_group->attrs) {
1138 goto err_free_pkey_group;
1141 ret = sysfs_create_group(&p->kobj, p->pkey_group);
1147 if (device->ops.init_port && is_full_dev) {
1148 ret = device->ops.init_port(device, port_num, &p->kobj);
1150 goto err_remove_pkey;
1154 * If port == 0, it means hw_counters are per device and not per
1155 * port, so holder should be device. Therefore skip per port conunter
1158 if (device->ops.alloc_hw_stats && port_num && is_full_dev)
1159 setup_hw_stats(device, p, port_num);
1161 list_add_tail(&p->kobj.entry, &coredev->port_list);
1163 kobject_uevent(&p->kobj, KOBJ_ADD);
1168 sysfs_remove_group(&p->kobj, p->pkey_group);
1171 if (p->pkey_group) {
1172 for (i = 0; i < attr.pkey_tbl_len; ++i)
1173 kfree(p->pkey_group->attrs[i]);
1175 kfree(p->pkey_group->attrs);
1176 p->pkey_group->attrs = NULL;
1179 err_free_pkey_group:
1180 kfree(p->pkey_group);
1182 err_remove_gid_type:
1183 sysfs_remove_group(&p->gid_attr_group->kobj,
1184 &p->gid_attr_group->type);
1187 for (i = 0; i < attr.gid_tbl_len; ++i)
1188 kfree(p->gid_attr_group->type.attrs[i]);
1190 kfree(p->gid_attr_group->type.attrs);
1191 p->gid_attr_group->type.attrs = NULL;
1193 err_remove_gid_ndev:
1194 sysfs_remove_group(&p->gid_attr_group->kobj,
1195 &p->gid_attr_group->ndev);
1198 for (i = 0; i < attr.gid_tbl_len; ++i)
1199 kfree(p->gid_attr_group->ndev.attrs[i]);
1201 kfree(p->gid_attr_group->ndev.attrs);
1202 p->gid_attr_group->ndev.attrs = NULL;
1205 sysfs_remove_group(&p->kobj, &p->gid_group);
1208 for (i = 0; i < attr.gid_tbl_len; ++i)
1209 kfree(p->gid_group.attrs[i]);
1211 kfree(p->gid_group.attrs);
1212 p->gid_group.attrs = NULL;
1216 sysfs_remove_group(&p->kobj, p->pma_table);
1219 kobject_put(&p->gid_attr_group->kobj);
1222 kobject_put(&p->kobj);
1226 static ssize_t node_type_show(struct device *device,
1227 struct device_attribute *attr, char *buf)
1229 struct ib_device *dev = rdma_device_to_ibdev(device);
1231 switch (dev->node_type) {
1232 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1233 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1234 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1235 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1236 case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type);
1237 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1238 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1239 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1242 static DEVICE_ATTR_RO(node_type);
1244 static ssize_t sys_image_guid_show(struct device *device,
1245 struct device_attribute *dev_attr, char *buf)
1247 struct ib_device *dev = rdma_device_to_ibdev(device);
1249 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1250 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1251 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1252 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1253 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1255 static DEVICE_ATTR_RO(sys_image_guid);
1257 static ssize_t node_guid_show(struct device *device,
1258 struct device_attribute *attr, char *buf)
1260 struct ib_device *dev = rdma_device_to_ibdev(device);
1262 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1263 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1264 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1265 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1266 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1268 static DEVICE_ATTR_RO(node_guid);
1270 static ssize_t node_desc_show(struct device *device,
1271 struct device_attribute *attr, char *buf)
1273 struct ib_device *dev = rdma_device_to_ibdev(device);
1275 return sprintf(buf, "%.64s\n", dev->node_desc);
1278 static ssize_t node_desc_store(struct device *device,
1279 struct device_attribute *attr,
1280 const char *buf, size_t count)
1282 struct ib_device *dev = rdma_device_to_ibdev(device);
1283 struct ib_device_modify desc = {};
1286 if (!dev->ops.modify_device)
1289 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1290 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1296 static DEVICE_ATTR_RW(node_desc);
1298 static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1301 struct ib_device *dev = rdma_device_to_ibdev(device);
1303 ib_get_device_fw_str(dev, buf);
1304 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1307 static DEVICE_ATTR_RO(fw_ver);
1309 static struct attribute *ib_dev_attrs[] = {
1310 &dev_attr_node_type.attr,
1311 &dev_attr_node_guid.attr,
1312 &dev_attr_sys_image_guid.attr,
1313 &dev_attr_fw_ver.attr,
1314 &dev_attr_node_desc.attr,
1318 const struct attribute_group ib_dev_attr_group = {
1319 .attrs = ib_dev_attrs,
1322 void ib_free_port_attrs(struct ib_core_device *coredev)
1324 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1325 bool is_full_dev = &device->coredev == coredev;
1326 struct kobject *p, *t;
1328 list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1329 struct ib_port *port = container_of(p, struct ib_port, kobj);
1331 list_del(&p->entry);
1332 if (port->hw_stats_ag)
1333 free_hsag(&port->kobj, port->hw_stats_ag);
1334 kfree(port->hw_stats);
1335 if (device->port_data && is_full_dev)
1336 device->port_data[port->port_num].hw_stats = NULL;
1338 if (port->pma_table)
1339 sysfs_remove_group(p, port->pma_table);
1340 if (port->pkey_group)
1341 sysfs_remove_group(p, port->pkey_group);
1342 sysfs_remove_group(p, &port->gid_group);
1343 sysfs_remove_group(&port->gid_attr_group->kobj,
1344 &port->gid_attr_group->ndev);
1345 sysfs_remove_group(&port->gid_attr_group->kobj,
1346 &port->gid_attr_group->type);
1347 kobject_put(&port->gid_attr_group->kobj);
1351 kobject_put(coredev->ports_kobj);
1354 int ib_setup_port_attrs(struct ib_core_device *coredev)
1356 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1360 coredev->ports_kobj = kobject_create_and_add("ports",
1361 &coredev->dev.kobj);
1362 if (!coredev->ports_kobj)
1365 rdma_for_each_port (device, port) {
1366 ret = add_port(coredev, port);
1374 ib_free_port_attrs(coredev);
1378 int ib_device_register_sysfs(struct ib_device *device)
1382 ret = ib_setup_port_attrs(&device->coredev);
1386 if (device->ops.alloc_hw_stats)
1387 setup_hw_stats(device, NULL, 0);
1392 void ib_device_unregister_sysfs(struct ib_device *device)
1394 if (device->hw_stats_ag)
1395 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1396 kfree(device->hw_stats);
1398 ib_free_port_attrs(&device->coredev);
1402 * ib_port_register_module_stat - add module counters under relevant port
1405 * @device: IB device to add counters
1406 * @port_num: valid port number
1407 * @kobj: pointer to the kobject to initialize
1408 * @ktype: pointer to the ktype for this kobject.
1409 * @name: the name of the kobject
1411 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
1412 struct kobject *kobj, struct kobj_type *ktype,
1415 struct kobject *p, *t;
1418 list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
1419 struct ib_port *port = container_of(p, struct ib_port, kobj);
1421 if (port->port_num != port_num)
1424 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
1434 EXPORT_SYMBOL(ib_port_register_module_stat);
1437 * ib_port_unregister_module_stat - release module counters
1438 * @kobj: pointer to the kobject to release
1440 void ib_port_unregister_module_stat(struct kobject *kobj)
1444 EXPORT_SYMBOL(ib_port_unregister_module_stat);