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>
42 #include <rdma/ib_mad.h>
43 #include <rdma/ib_pma.h>
47 struct gid_attr_group {
50 struct attribute_group ndev;
51 struct attribute_group type;
55 struct ib_device *ibdev;
56 struct gid_attr_group *gid_attr_group;
57 struct attribute_group gid_group;
58 struct attribute_group pkey_group;
59 struct attribute_group *pma_table;
60 struct attribute_group *hw_stats_ag;
61 struct rdma_hw_stats *hw_stats;
65 struct port_attribute {
66 struct attribute attr;
67 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
68 ssize_t (*store)(struct ib_port *, struct port_attribute *,
69 const char *buf, size_t count);
72 #define PORT_ATTR(_name, _mode, _show, _store) \
73 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
75 #define PORT_ATTR_RO(_name) \
76 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
78 struct port_table_attribute {
79 struct port_attribute attr;
85 struct hw_stats_attribute {
86 struct attribute attr;
87 ssize_t (*show)(struct kobject *kobj,
88 struct attribute *attr, char *buf);
89 ssize_t (*store)(struct kobject *kobj,
90 struct attribute *attr,
97 static ssize_t port_attr_show(struct kobject *kobj,
98 struct attribute *attr, char *buf)
100 struct port_attribute *port_attr =
101 container_of(attr, struct port_attribute, attr);
102 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
104 if (!port_attr->show)
107 return port_attr->show(p, port_attr, buf);
110 static const struct sysfs_ops port_sysfs_ops = {
111 .show = port_attr_show
114 static ssize_t gid_attr_show(struct kobject *kobj,
115 struct attribute *attr, char *buf)
117 struct port_attribute *port_attr =
118 container_of(attr, struct port_attribute, attr);
119 struct ib_port *p = container_of(kobj, struct gid_attr_group,
122 if (!port_attr->show)
125 return port_attr->show(p, port_attr, buf);
128 static const struct sysfs_ops gid_attr_sysfs_ops = {
129 .show = gid_attr_show
132 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
135 struct ib_port_attr attr;
138 static const char *state_name[] = {
139 [IB_PORT_NOP] = "NOP",
140 [IB_PORT_DOWN] = "DOWN",
141 [IB_PORT_INIT] = "INIT",
142 [IB_PORT_ARMED] = "ARMED",
143 [IB_PORT_ACTIVE] = "ACTIVE",
144 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
147 ret = ib_query_port(p->ibdev, p->port_num, &attr);
151 return sprintf(buf, "%d: %s\n", attr.state,
152 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
153 state_name[attr.state] : "UNKNOWN");
156 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
159 struct ib_port_attr attr;
162 ret = ib_query_port(p->ibdev, p->port_num, &attr);
166 return sprintf(buf, "0x%x\n", attr.lid);
169 static ssize_t lid_mask_count_show(struct ib_port *p,
170 struct port_attribute *unused,
173 struct ib_port_attr attr;
176 ret = ib_query_port(p->ibdev, p->port_num, &attr);
180 return sprintf(buf, "%d\n", attr.lmc);
183 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
186 struct ib_port_attr attr;
189 ret = ib_query_port(p->ibdev, p->port_num, &attr);
193 return sprintf(buf, "0x%x\n", attr.sm_lid);
196 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
199 struct ib_port_attr attr;
202 ret = ib_query_port(p->ibdev, p->port_num, &attr);
206 return sprintf(buf, "%d\n", attr.sm_sl);
209 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
212 struct ib_port_attr attr;
215 ret = ib_query_port(p->ibdev, p->port_num, &attr);
219 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
222 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
225 struct ib_port_attr attr;
227 int rate; /* in deci-Gb/sec */
230 ret = ib_query_port(p->ibdev, p->port_num, &attr);
234 switch (attr.active_speed) {
256 default: /* default to SDR for invalid rates */
261 rate *= ib_width_enum_to_int(attr.active_width);
265 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
266 rate / 10, rate % 10 ? ".5" : "",
267 ib_width_enum_to_int(attr.active_width), speed);
270 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
273 struct ib_port_attr attr;
277 ret = ib_query_port(p->ibdev, p->port_num, &attr);
281 switch (attr.phys_state) {
282 case 1: return sprintf(buf, "1: Sleep\n");
283 case 2: return sprintf(buf, "2: Polling\n");
284 case 3: return sprintf(buf, "3: Disabled\n");
285 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
286 case 5: return sprintf(buf, "5: LinkUp\n");
287 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
288 case 7: return sprintf(buf, "7: Phy Test\n");
289 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
293 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
296 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
297 case IB_LINK_LAYER_INFINIBAND:
298 return sprintf(buf, "%s\n", "InfiniBand");
299 case IB_LINK_LAYER_ETHERNET:
300 return sprintf(buf, "%s\n", "Ethernet");
302 return sprintf(buf, "%s\n", "Unknown");
306 static PORT_ATTR_RO(state);
307 static PORT_ATTR_RO(lid);
308 static PORT_ATTR_RO(lid_mask_count);
309 static PORT_ATTR_RO(sm_lid);
310 static PORT_ATTR_RO(sm_sl);
311 static PORT_ATTR_RO(cap_mask);
312 static PORT_ATTR_RO(rate);
313 static PORT_ATTR_RO(phys_state);
314 static PORT_ATTR_RO(link_layer);
316 static struct attribute *port_default_attrs[] = {
317 &port_attr_state.attr,
319 &port_attr_lid_mask_count.attr,
320 &port_attr_sm_lid.attr,
321 &port_attr_sm_sl.attr,
322 &port_attr_cap_mask.attr,
323 &port_attr_rate.attr,
324 &port_attr_phys_state.attr,
325 &port_attr_link_layer.attr,
329 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
334 return sprintf(buf, "%s\n", gid_attr->ndev->name);
337 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
339 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
342 static ssize_t _show_port_gid_attr(struct ib_port *p,
343 struct port_attribute *attr,
345 size_t (*print)(struct ib_gid_attr *gid_attr,
348 struct port_table_attribute *tab_attr =
349 container_of(attr, struct port_table_attribute, attr);
351 struct ib_gid_attr gid_attr = {};
354 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
359 ret = print(&gid_attr, buf);
363 dev_put(gid_attr.ndev);
367 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
370 struct port_table_attribute *tab_attr =
371 container_of(attr, struct port_table_attribute, attr);
375 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
379 return sprintf(buf, "%pI6\n", gid.raw);
382 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
383 struct port_attribute *attr, char *buf)
385 return _show_port_gid_attr(p, attr, buf, print_ndev);
388 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
389 struct port_attribute *attr,
392 return _show_port_gid_attr(p, attr, buf, print_gid_type);
395 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
398 struct port_table_attribute *tab_attr =
399 container_of(attr, struct port_table_attribute, attr);
403 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
407 return sprintf(buf, "0x%04x\n", pkey);
410 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
411 struct port_table_attribute port_pma_attr_##_name = { \
412 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
413 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
414 .attr_id = IB_PMA_PORT_COUNTERS , \
417 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
418 struct port_table_attribute port_pma_attr_ext_##_name = { \
419 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
420 .index = (_offset) | ((_width) << 16), \
421 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
425 * Get a Perfmgmt MAD block of data.
426 * Returns error code or the number of bytes retrieved.
428 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
429 void *data, int offset, size_t size)
431 struct ib_mad *in_mad;
432 struct ib_mad *out_mad;
433 size_t mad_size = sizeof(*out_mad);
434 u16 out_mad_pkey_index = 0;
437 if (!dev->process_mad)
440 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
441 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
442 if (!in_mad || !out_mad) {
447 in_mad->mad_hdr.base_version = 1;
448 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
449 in_mad->mad_hdr.class_version = 1;
450 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
451 in_mad->mad_hdr.attr_id = attr;
453 if (attr != IB_PMA_CLASS_PORT_INFO)
454 in_mad->data[41] = port_num; /* PortSelect field */
456 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
457 port_num, NULL, NULL,
458 (const struct ib_mad_hdr *)in_mad, mad_size,
459 (struct ib_mad_hdr *)out_mad, &mad_size,
460 &out_mad_pkey_index) &
461 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
462 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
466 memcpy(data, out_mad->data + offset, size);
474 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
477 struct port_table_attribute *tab_attr =
478 container_of(attr, struct port_table_attribute, attr);
479 int offset = tab_attr->index & 0xffff;
480 int width = (tab_attr->index >> 16) & 0xff;
484 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
485 40 + offset / 8, sizeof(data));
487 return sprintf(buf, "N/A (no PMA)\n");
491 ret = sprintf(buf, "%u\n", (*data >>
492 (4 - (offset % 8))) & 0xf);
495 ret = sprintf(buf, "%u\n", *data);
498 ret = sprintf(buf, "%u\n",
499 be16_to_cpup((__be16 *)data));
502 ret = sprintf(buf, "%u\n",
503 be32_to_cpup((__be32 *)data));
506 ret = sprintf(buf, "%llu\n",
507 be64_to_cpup((__be64 *)data));
517 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
518 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
519 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
520 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
521 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
522 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
523 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
524 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
525 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
526 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
527 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
528 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
529 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
530 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
531 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
532 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
535 * Counters added by extended set
537 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
538 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
539 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
540 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
541 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
542 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
543 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
544 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
546 static struct attribute *pma_attrs[] = {
547 &port_pma_attr_symbol_error.attr.attr,
548 &port_pma_attr_link_error_recovery.attr.attr,
549 &port_pma_attr_link_downed.attr.attr,
550 &port_pma_attr_port_rcv_errors.attr.attr,
551 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
552 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
553 &port_pma_attr_port_xmit_discards.attr.attr,
554 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
555 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
556 &port_pma_attr_local_link_integrity_errors.attr.attr,
557 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
558 &port_pma_attr_VL15_dropped.attr.attr,
559 &port_pma_attr_port_xmit_data.attr.attr,
560 &port_pma_attr_port_rcv_data.attr.attr,
561 &port_pma_attr_port_xmit_packets.attr.attr,
562 &port_pma_attr_port_rcv_packets.attr.attr,
566 static struct attribute *pma_attrs_ext[] = {
567 &port_pma_attr_symbol_error.attr.attr,
568 &port_pma_attr_link_error_recovery.attr.attr,
569 &port_pma_attr_link_downed.attr.attr,
570 &port_pma_attr_port_rcv_errors.attr.attr,
571 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
572 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
573 &port_pma_attr_port_xmit_discards.attr.attr,
574 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
575 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
576 &port_pma_attr_local_link_integrity_errors.attr.attr,
577 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
578 &port_pma_attr_VL15_dropped.attr.attr,
579 &port_pma_attr_ext_port_xmit_data.attr.attr,
580 &port_pma_attr_ext_port_rcv_data.attr.attr,
581 &port_pma_attr_ext_port_xmit_packets.attr.attr,
582 &port_pma_attr_ext_port_rcv_packets.attr.attr,
583 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
584 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
585 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
586 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
590 static struct attribute *pma_attrs_noietf[] = {
591 &port_pma_attr_symbol_error.attr.attr,
592 &port_pma_attr_link_error_recovery.attr.attr,
593 &port_pma_attr_link_downed.attr.attr,
594 &port_pma_attr_port_rcv_errors.attr.attr,
595 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
596 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
597 &port_pma_attr_port_xmit_discards.attr.attr,
598 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
599 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
600 &port_pma_attr_local_link_integrity_errors.attr.attr,
601 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
602 &port_pma_attr_VL15_dropped.attr.attr,
603 &port_pma_attr_ext_port_xmit_data.attr.attr,
604 &port_pma_attr_ext_port_rcv_data.attr.attr,
605 &port_pma_attr_ext_port_xmit_packets.attr.attr,
606 &port_pma_attr_ext_port_rcv_packets.attr.attr,
610 static struct attribute_group pma_group = {
615 static struct attribute_group pma_group_ext = {
617 .attrs = pma_attrs_ext
620 static struct attribute_group pma_group_noietf = {
622 .attrs = pma_attrs_noietf
625 static void ib_port_release(struct kobject *kobj)
627 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
631 if (p->gid_group.attrs) {
632 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
635 kfree(p->gid_group.attrs);
638 if (p->pkey_group.attrs) {
639 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
642 kfree(p->pkey_group.attrs);
648 static void ib_port_gid_attr_release(struct kobject *kobj)
650 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
656 for (i = 0; (a = g->ndev.attrs[i]); ++i)
659 kfree(g->ndev.attrs);
663 for (i = 0; (a = g->type.attrs[i]); ++i)
666 kfree(g->type.attrs);
672 static struct kobj_type port_type = {
673 .release = ib_port_release,
674 .sysfs_ops = &port_sysfs_ops,
675 .default_attrs = port_default_attrs
678 static struct kobj_type gid_attr_type = {
679 .sysfs_ops = &gid_attr_sysfs_ops,
680 .release = ib_port_gid_attr_release
683 static struct attribute **
684 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
685 struct port_attribute *, char *buf),
688 struct attribute **tab_attr;
689 struct port_table_attribute *element;
692 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
696 for (i = 0; i < len; i++) {
697 element = kzalloc(sizeof(struct port_table_attribute),
702 if (snprintf(element->name, sizeof(element->name),
703 "%d", i) >= sizeof(element->name)) {
708 element->attr.attr.name = element->name;
709 element->attr.attr.mode = S_IRUGO;
710 element->attr.show = show;
712 sysfs_attr_init(&element->attr.attr);
714 tab_attr[i] = &element->attr.attr;
727 * Figure out which counter table to use depending on
728 * the device capabilities.
730 static struct attribute_group *get_counter_table(struct ib_device *dev,
733 struct ib_class_port_info cpi;
735 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
736 &cpi, 40, sizeof(cpi)) >= 0) {
737 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
738 /* We have extended counters */
739 return &pma_group_ext;
741 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
742 /* But not the IETF ones */
743 return &pma_group_noietf;
746 /* Fall back to normal counters */
750 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
751 u8 port_num, int index)
755 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
757 ret = dev->get_hw_stats(dev, stats, port_num, index);
760 if (ret == stats->num_counters)
761 stats->timestamp = jiffies;
766 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
768 return sprintf(buf, "%llu\n", stats->value[index]);
771 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
774 struct ib_device *dev;
775 struct ib_port *port;
776 struct hw_stats_attribute *hsa;
777 struct rdma_hw_stats *stats;
780 hsa = container_of(attr, struct hw_stats_attribute, attr);
781 if (!hsa->port_num) {
782 dev = container_of((struct device *)kobj,
783 struct ib_device, dev);
784 stats = dev->hw_stats;
786 port = container_of(kobj, struct ib_port, kobj);
788 stats = port->hw_stats;
790 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
793 return print_hw_stat(stats, hsa->index, buf);
796 static ssize_t show_stats_lifespan(struct kobject *kobj,
797 struct attribute *attr,
800 struct hw_stats_attribute *hsa;
803 hsa = container_of(attr, struct hw_stats_attribute, attr);
804 if (!hsa->port_num) {
805 struct ib_device *dev = container_of((struct device *)kobj,
806 struct ib_device, dev);
807 msecs = jiffies_to_msecs(dev->hw_stats->lifespan);
809 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
810 msecs = jiffies_to_msecs(p->hw_stats->lifespan);
812 return sprintf(buf, "%d\n", msecs);
815 static ssize_t set_stats_lifespan(struct kobject *kobj,
816 struct attribute *attr,
817 const char *buf, size_t count)
819 struct hw_stats_attribute *hsa;
824 ret = kstrtoint(buf, 10, &msecs);
827 if (msecs < 0 || msecs > 10000)
829 jiffies = msecs_to_jiffies(msecs);
830 hsa = container_of(attr, struct hw_stats_attribute, attr);
831 if (!hsa->port_num) {
832 struct ib_device *dev = container_of((struct device *)kobj,
833 struct ib_device, dev);
834 dev->hw_stats->lifespan = jiffies;
836 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
837 p->hw_stats->lifespan = jiffies;
842 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
844 struct attribute **attr;
846 sysfs_remove_group(kobj, attr_group);
848 for (attr = attr_group->attrs; *attr; attr++)
853 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
855 struct hw_stats_attribute *hsa;
857 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
861 hsa->attr.name = (char *)name;
862 hsa->attr.mode = S_IRUGO;
863 hsa->show = show_hw_stats;
866 hsa->port_num = port_num;
871 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
873 struct hw_stats_attribute *hsa;
875 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
879 hsa->attr.name = name;
880 hsa->attr.mode = S_IWUSR | S_IRUGO;
881 hsa->show = show_stats_lifespan;
882 hsa->store = set_stats_lifespan;
884 hsa->port_num = port_num;
889 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
892 struct attribute_group *hsag = NULL;
893 struct rdma_hw_stats *stats;
896 stats = device->alloc_hw_stats(device, port_num);
901 if (!stats->names || stats->num_counters <= 0)
904 hsag = kzalloc(sizeof(*hsag) +
905 // 1 extra for the lifespan config entry
906 sizeof(void *) * (stats->num_counters + 1),
911 ret = device->get_hw_stats(device, stats, port_num,
912 stats->num_counters);
913 if (ret != stats->num_counters)
916 stats->timestamp = jiffies;
918 hsag->name = "hw_counters";
919 hsag->attrs = (void *)hsag + sizeof(*hsag);
921 for (i = 0; i < stats->num_counters; i++) {
922 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
927 /* treat an error here as non-fatal */
928 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
931 struct kobject *kobj = &port->kobj;
932 ret = sysfs_create_group(kobj, hsag);
935 port->hw_stats_ag = hsag;
936 port->hw_stats = stats;
938 struct kobject *kobj = &device->dev.kobj;
939 ret = sysfs_create_group(kobj, hsag);
942 device->hw_stats_ag = hsag;
943 device->hw_stats = stats;
951 kfree(hsag->attrs[i]);
956 static int add_port(struct ib_device *device, int port_num,
957 int (*port_callback)(struct ib_device *,
958 u8, struct kobject *))
961 struct ib_port_attr attr;
965 ret = ib_query_port(device, port_num, &attr);
969 p = kzalloc(sizeof *p, GFP_KERNEL);
974 p->port_num = port_num;
976 ret = kobject_init_and_add(&p->kobj, &port_type,
977 device->ports_parent,
984 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
985 if (!p->gid_attr_group) {
990 p->gid_attr_group->port = p;
991 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
992 &p->kobj, "gid_attrs");
994 kfree(p->gid_attr_group);
998 p->pma_table = get_counter_table(device, port_num);
999 ret = sysfs_create_group(&p->kobj, p->pma_table);
1001 goto err_put_gid_attrs;
1003 p->gid_group.name = "gids";
1004 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1005 if (!p->gid_group.attrs) {
1007 goto err_remove_pma;
1010 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1014 p->gid_attr_group->ndev.name = "ndevs";
1015 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1017 if (!p->gid_attr_group->ndev.attrs) {
1019 goto err_remove_gid;
1022 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1023 &p->gid_attr_group->ndev);
1025 goto err_free_gid_ndev;
1027 p->gid_attr_group->type.name = "types";
1028 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1030 if (!p->gid_attr_group->type.attrs) {
1032 goto err_remove_gid_ndev;
1035 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1036 &p->gid_attr_group->type);
1038 goto err_free_gid_type;
1040 p->pkey_group.name = "pkeys";
1041 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1043 if (!p->pkey_group.attrs) {
1045 goto err_remove_gid_type;
1048 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1052 if (port_callback) {
1053 ret = port_callback(device, port_num, &p->kobj);
1055 goto err_remove_pkey;
1059 * If port == 0, it means we have only one port and the parent
1060 * device, not this port device, should be the holder of the
1063 if (device->alloc_hw_stats && port_num)
1064 setup_hw_stats(device, p, port_num);
1066 list_add_tail(&p->kobj.entry, &device->port_list);
1068 kobject_uevent(&p->kobj, KOBJ_ADD);
1072 sysfs_remove_group(&p->kobj, &p->pkey_group);
1075 for (i = 0; i < attr.pkey_tbl_len; ++i)
1076 kfree(p->pkey_group.attrs[i]);
1078 kfree(p->pkey_group.attrs);
1079 p->pkey_group.attrs = NULL;
1081 err_remove_gid_type:
1082 sysfs_remove_group(&p->gid_attr_group->kobj,
1083 &p->gid_attr_group->type);
1086 for (i = 0; i < attr.gid_tbl_len; ++i)
1087 kfree(p->gid_attr_group->type.attrs[i]);
1089 kfree(p->gid_attr_group->type.attrs);
1090 p->gid_attr_group->type.attrs = NULL;
1092 err_remove_gid_ndev:
1093 sysfs_remove_group(&p->gid_attr_group->kobj,
1094 &p->gid_attr_group->ndev);
1097 for (i = 0; i < attr.gid_tbl_len; ++i)
1098 kfree(p->gid_attr_group->ndev.attrs[i]);
1100 kfree(p->gid_attr_group->ndev.attrs);
1101 p->gid_attr_group->ndev.attrs = NULL;
1104 sysfs_remove_group(&p->kobj, &p->gid_group);
1107 for (i = 0; i < attr.gid_tbl_len; ++i)
1108 kfree(p->gid_group.attrs[i]);
1110 kfree(p->gid_group.attrs);
1111 p->gid_group.attrs = NULL;
1114 sysfs_remove_group(&p->kobj, p->pma_table);
1117 kobject_put(&p->gid_attr_group->kobj);
1120 kobject_put(&p->kobj);
1124 static ssize_t show_node_type(struct device *device,
1125 struct device_attribute *attr, char *buf)
1127 struct ib_device *dev = container_of(device, struct ib_device, dev);
1129 switch (dev->node_type) {
1130 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1131 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1132 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1133 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1134 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1135 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1136 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1140 static ssize_t show_sys_image_guid(struct device *device,
1141 struct device_attribute *dev_attr, char *buf)
1143 struct ib_device *dev = container_of(device, struct ib_device, dev);
1145 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1146 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1147 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1148 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1149 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1152 static ssize_t show_node_guid(struct device *device,
1153 struct device_attribute *attr, char *buf)
1155 struct ib_device *dev = container_of(device, struct ib_device, dev);
1157 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1158 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1159 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1160 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1161 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1164 static ssize_t show_node_desc(struct device *device,
1165 struct device_attribute *attr, char *buf)
1167 struct ib_device *dev = container_of(device, struct ib_device, dev);
1169 return sprintf(buf, "%.64s\n", dev->node_desc);
1172 static ssize_t set_node_desc(struct device *device,
1173 struct device_attribute *attr,
1174 const char *buf, size_t count)
1176 struct ib_device *dev = container_of(device, struct ib_device, dev);
1177 struct ib_device_modify desc = {};
1180 if (!dev->modify_device)
1183 memcpy(desc.node_desc, buf, min_t(int, count, 64));
1184 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1191 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1192 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1193 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1194 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1196 static struct device_attribute *ib_class_attributes[] = {
1197 &dev_attr_node_type,
1198 &dev_attr_sys_image_guid,
1199 &dev_attr_node_guid,
1203 static void free_port_list_attributes(struct ib_device *device)
1205 struct kobject *p, *t;
1207 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1208 struct ib_port *port = container_of(p, struct ib_port, kobj);
1209 list_del(&p->entry);
1210 if (port->hw_stats) {
1211 kfree(port->hw_stats);
1212 free_hsag(&port->kobj, port->hw_stats_ag);
1214 sysfs_remove_group(p, port->pma_table);
1215 sysfs_remove_group(p, &port->pkey_group);
1216 sysfs_remove_group(p, &port->gid_group);
1217 sysfs_remove_group(&port->gid_attr_group->kobj,
1218 &port->gid_attr_group->ndev);
1219 sysfs_remove_group(&port->gid_attr_group->kobj,
1220 &port->gid_attr_group->type);
1221 kobject_put(&port->gid_attr_group->kobj);
1225 kobject_put(device->ports_parent);
1228 int ib_device_register_sysfs(struct ib_device *device,
1229 int (*port_callback)(struct ib_device *,
1230 u8, struct kobject *))
1232 struct device *class_dev = &device->dev;
1236 device->dev.parent = device->dma_device;
1237 ret = dev_set_name(class_dev, "%s", device->name);
1241 ret = device_add(class_dev);
1245 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1246 ret = device_create_file(class_dev, ib_class_attributes[i]);
1248 goto err_unregister;
1251 device->ports_parent = kobject_create_and_add("ports",
1253 if (!device->ports_parent) {
1258 if (rdma_cap_ib_switch(device)) {
1259 ret = add_port(device, 0, port_callback);
1263 for (i = 1; i <= device->phys_port_cnt; ++i) {
1264 ret = add_port(device, i, port_callback);
1270 if (device->alloc_hw_stats)
1271 setup_hw_stats(device, NULL, 0);
1276 free_port_list_attributes(device);
1279 device_unregister(class_dev);
1285 void ib_device_unregister_sysfs(struct ib_device *device)
1289 /* Hold kobject until ib_dealloc_device() */
1290 kobject_get(&device->dev.kobj);
1292 free_port_list_attributes(device);
1294 if (device->hw_stats) {
1295 kfree(device->hw_stats);
1296 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1299 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1300 device_remove_file(&device->dev, ib_class_attributes[i]);
1302 device_unregister(&device->dev);