2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
4 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
6 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include "core_priv.h"
42 #include <linux/slab.h>
43 #include <linux/string.h>
44 #include <linux/netdevice.h>
46 #include <linux/printk.h>
48 #include <rdma/ib_mad.h>
49 #include <rdma/ib_pma.h>
53 struct gid_attr_group {
56 struct attribute_group ndev;
57 struct attribute_group type;
61 struct ib_device *ibdev;
62 struct gid_attr_group *gid_attr_group;
63 struct attribute_group gid_group;
64 struct attribute_group pkey_group;
65 struct attribute_group *pma_table;
66 struct attribute_group *hw_stats_ag;
67 struct rdma_hw_stats *hw_stats;
71 struct port_attribute {
72 struct attribute attr;
73 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
74 ssize_t (*store)(struct ib_port *, struct port_attribute *,
75 const char *buf, size_t count);
78 #define PORT_ATTR(_name, _mode, _show, _store) \
79 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
81 #define PORT_ATTR_RO(_name) \
82 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
84 struct port_table_attribute {
85 struct port_attribute attr;
91 struct hw_stats_attribute {
92 struct attribute attr;
93 ssize_t (*show)(struct kobject *kobj,
94 struct attribute *attr, char *buf);
95 ssize_t (*store)(struct kobject *kobj,
96 struct attribute *attr,
103 static ssize_t port_attr_show(struct kobject *kobj,
104 struct attribute *attr, char *buf)
106 struct port_attribute *port_attr =
107 container_of(attr, struct port_attribute, attr);
108 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
110 if (!port_attr->show)
113 return port_attr->show(p, port_attr, buf);
116 static const struct sysfs_ops port_sysfs_ops = {
117 .show = port_attr_show
120 static ssize_t gid_attr_show(struct kobject *kobj,
121 struct attribute *attr, char *buf)
123 struct port_attribute *port_attr =
124 container_of(attr, struct port_attribute, attr);
125 struct ib_port *p = container_of(kobj, struct gid_attr_group,
128 if (!port_attr->show)
131 return port_attr->show(p, port_attr, buf);
134 static const struct sysfs_ops gid_attr_sysfs_ops = {
135 .show = gid_attr_show
138 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
141 struct ib_port_attr attr;
144 static const char *state_name[] = {
145 [IB_PORT_NOP] = "NOP",
146 [IB_PORT_DOWN] = "DOWN",
147 [IB_PORT_INIT] = "INIT",
148 [IB_PORT_ARMED] = "ARMED",
149 [IB_PORT_ACTIVE] = "ACTIVE",
150 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
153 ret = ib_query_port(p->ibdev, p->port_num, &attr);
157 return sprintf(buf, "%d: %s\n", attr.state,
158 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
159 state_name[attr.state] : "UNKNOWN");
162 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
165 struct ib_port_attr attr;
168 ret = ib_query_port(p->ibdev, p->port_num, &attr);
172 return sprintf(buf, "0x%x\n", attr.lid);
175 static ssize_t lid_mask_count_show(struct ib_port *p,
176 struct port_attribute *unused,
179 struct ib_port_attr attr;
182 ret = ib_query_port(p->ibdev, p->port_num, &attr);
186 return sprintf(buf, "%d\n", attr.lmc);
189 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
192 struct ib_port_attr attr;
195 ret = ib_query_port(p->ibdev, p->port_num, &attr);
199 return sprintf(buf, "0x%x\n", attr.sm_lid);
202 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
205 struct ib_port_attr attr;
208 ret = ib_query_port(p->ibdev, p->port_num, &attr);
212 return sprintf(buf, "%d\n", attr.sm_sl);
215 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
218 struct ib_port_attr attr;
221 ret = ib_query_port(p->ibdev, p->port_num, &attr);
225 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
228 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
231 struct ib_port_attr attr;
233 int rate; /* in deci-Gb/sec */
236 ret = ib_query_port(p->ibdev, p->port_num, &attr);
240 switch (attr.active_speed) {
266 default: /* default to SDR for invalid rates */
272 rate *= ib_width_enum_to_int(attr.active_width);
276 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
277 rate / 10, rate % 10 ? ".5" : "",
278 ib_width_enum_to_int(attr.active_width), speed);
281 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
284 struct ib_port_attr attr;
288 ret = ib_query_port(p->ibdev, p->port_num, &attr);
292 switch (attr.phys_state) {
293 case 1: return sprintf(buf, "1: Sleep\n");
294 case 2: return sprintf(buf, "2: Polling\n");
295 case 3: return sprintf(buf, "3: Disabled\n");
296 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
297 case 5: return sprintf(buf, "5: LinkUp\n");
298 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
299 case 7: return sprintf(buf, "7: Phy Test\n");
300 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
304 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
307 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
308 case IB_LINK_LAYER_INFINIBAND:
309 return sprintf(buf, "%s\n", "InfiniBand");
310 case IB_LINK_LAYER_ETHERNET:
311 return sprintf(buf, "%s\n", "Ethernet");
313 return sprintf(buf, "%s\n", "Unknown");
317 static PORT_ATTR_RO(state);
318 static PORT_ATTR_RO(lid);
319 static PORT_ATTR_RO(lid_mask_count);
320 static PORT_ATTR_RO(sm_lid);
321 static PORT_ATTR_RO(sm_sl);
322 static PORT_ATTR_RO(cap_mask);
323 static PORT_ATTR_RO(rate);
324 static PORT_ATTR_RO(phys_state);
325 static PORT_ATTR_RO(link_layer);
327 static struct attribute *port_default_attrs[] = {
328 &port_attr_state.attr,
330 &port_attr_lid_mask_count.attr,
331 &port_attr_sm_lid.attr,
332 &port_attr_sm_sl.attr,
333 &port_attr_cap_mask.attr,
334 &port_attr_rate.attr,
335 &port_attr_phys_state.attr,
336 &port_attr_link_layer.attr,
340 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
345 return sprintf(buf, "%s\n", if_name(gid_attr->ndev));
348 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
350 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
353 static ssize_t _show_port_gid_attr(struct ib_port *p,
354 struct port_attribute *attr,
356 size_t (*print)(struct ib_gid_attr *gid_attr,
359 struct port_table_attribute *tab_attr =
360 container_of(attr, struct port_table_attribute, attr);
362 struct ib_gid_attr gid_attr = {};
365 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
370 ret = print(&gid_attr, buf);
374 dev_put(gid_attr.ndev);
378 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
381 struct port_table_attribute *tab_attr =
382 container_of(attr, struct port_table_attribute, attr);
386 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
390 return sprintf(buf, GID_PRINT_FMT"\n", GID_PRINT_ARGS(gid.raw));
393 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
394 struct port_attribute *attr, char *buf)
396 return _show_port_gid_attr(p, attr, buf, print_ndev);
399 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
400 struct port_attribute *attr,
403 return _show_port_gid_attr(p, attr, buf, print_gid_type);
406 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
409 struct port_table_attribute *tab_attr =
410 container_of(attr, struct port_table_attribute, attr);
414 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
418 return sprintf(buf, "0x%04x\n", pkey);
421 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
422 struct port_table_attribute port_pma_attr_##_name = { \
423 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
424 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
425 .attr_id = IB_PMA_PORT_COUNTERS , \
428 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
429 struct port_table_attribute port_pma_attr_ext_##_name = { \
430 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
431 .index = (_offset) | ((_width) << 16), \
432 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
436 * Get a Perfmgmt MAD block of data.
437 * Returns error code or the number of bytes retrieved.
439 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
440 void *data, int offset, size_t size)
442 struct ib_mad *in_mad;
443 struct ib_mad *out_mad;
444 size_t mad_size = sizeof(*out_mad);
445 u16 out_mad_pkey_index = 0;
448 if (!dev->process_mad)
451 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
452 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
453 if (!in_mad || !out_mad) {
458 in_mad->mad_hdr.base_version = 1;
459 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
460 in_mad->mad_hdr.class_version = 1;
461 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
462 in_mad->mad_hdr.attr_id = attr;
464 if (attr != IB_PMA_CLASS_PORT_INFO)
465 in_mad->data[41] = port_num; /* PortSelect field */
467 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
468 port_num, NULL, NULL,
469 (const struct ib_mad_hdr *)in_mad, mad_size,
470 (struct ib_mad_hdr *)out_mad, &mad_size,
471 &out_mad_pkey_index) &
472 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
473 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
477 memcpy(data, out_mad->data + offset, size);
485 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
488 struct port_table_attribute *tab_attr =
489 container_of(attr, struct port_table_attribute, attr);
490 int offset = tab_attr->index & 0xffff;
491 int width = (tab_attr->index >> 16) & 0xff;
495 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
496 40 + offset / 8, sizeof(data));
498 return sprintf(buf, "N/A (no PMA)\n");
502 ret = sprintf(buf, "%u\n", (*data >>
503 (4 - (offset % 8))) & 0xf);
506 ret = sprintf(buf, "%u\n", *data);
509 ret = sprintf(buf, "%u\n",
510 be16_to_cpup((__be16 *)data));
513 ret = sprintf(buf, "%u\n",
514 be32_to_cpup((__be32 *)data));
517 ret = sprintf(buf, "%llu\n",
518 (unsigned long long)be64_to_cpup((__be64 *)data));
528 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
529 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
530 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
531 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
532 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
533 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
534 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
535 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
536 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
537 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
538 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
539 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
540 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
541 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
542 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
543 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
544 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
547 * Counters added by extended set
549 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
550 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
551 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
552 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
553 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
554 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
555 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
556 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
558 static struct attribute *pma_attrs[] = {
559 &port_pma_attr_symbol_error.attr.attr,
560 &port_pma_attr_link_error_recovery.attr.attr,
561 &port_pma_attr_link_downed.attr.attr,
562 &port_pma_attr_port_rcv_errors.attr.attr,
563 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
564 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
565 &port_pma_attr_port_xmit_discards.attr.attr,
566 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
567 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
568 &port_pma_attr_local_link_integrity_errors.attr.attr,
569 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
570 &port_pma_attr_VL15_dropped.attr.attr,
571 &port_pma_attr_port_xmit_data.attr.attr,
572 &port_pma_attr_port_rcv_data.attr.attr,
573 &port_pma_attr_port_xmit_packets.attr.attr,
574 &port_pma_attr_port_rcv_packets.attr.attr,
575 &port_pma_attr_port_xmit_wait.attr.attr,
579 static struct attribute *pma_attrs_ext[] = {
580 &port_pma_attr_symbol_error.attr.attr,
581 &port_pma_attr_link_error_recovery.attr.attr,
582 &port_pma_attr_link_downed.attr.attr,
583 &port_pma_attr_port_rcv_errors.attr.attr,
584 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
585 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
586 &port_pma_attr_port_xmit_discards.attr.attr,
587 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
588 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
589 &port_pma_attr_local_link_integrity_errors.attr.attr,
590 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
591 &port_pma_attr_VL15_dropped.attr.attr,
592 &port_pma_attr_ext_port_xmit_data.attr.attr,
593 &port_pma_attr_ext_port_rcv_data.attr.attr,
594 &port_pma_attr_ext_port_xmit_packets.attr.attr,
595 &port_pma_attr_port_xmit_wait.attr.attr,
596 &port_pma_attr_ext_port_rcv_packets.attr.attr,
597 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
598 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
599 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
600 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
604 static struct attribute *pma_attrs_noietf[] = {
605 &port_pma_attr_symbol_error.attr.attr,
606 &port_pma_attr_link_error_recovery.attr.attr,
607 &port_pma_attr_link_downed.attr.attr,
608 &port_pma_attr_port_rcv_errors.attr.attr,
609 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
610 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
611 &port_pma_attr_port_xmit_discards.attr.attr,
612 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
613 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
614 &port_pma_attr_local_link_integrity_errors.attr.attr,
615 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
616 &port_pma_attr_VL15_dropped.attr.attr,
617 &port_pma_attr_ext_port_xmit_data.attr.attr,
618 &port_pma_attr_ext_port_rcv_data.attr.attr,
619 &port_pma_attr_ext_port_xmit_packets.attr.attr,
620 &port_pma_attr_ext_port_rcv_packets.attr.attr,
621 &port_pma_attr_port_xmit_wait.attr.attr,
625 static struct attribute_group pma_group = {
630 static struct attribute_group pma_group_ext = {
632 .attrs = pma_attrs_ext
635 static struct attribute_group pma_group_noietf = {
637 .attrs = pma_attrs_noietf
640 static void ib_port_release(struct kobject *kobj)
642 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
646 if (p->gid_group.attrs) {
647 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
650 kfree(p->gid_group.attrs);
653 if (p->pkey_group.attrs) {
654 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
657 kfree(p->pkey_group.attrs);
663 static void ib_port_gid_attr_release(struct kobject *kobj)
665 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
671 for (i = 0; (a = g->ndev.attrs[i]); ++i)
674 kfree(g->ndev.attrs);
678 for (i = 0; (a = g->type.attrs[i]); ++i)
681 kfree(g->type.attrs);
687 static struct kobj_type port_type = {
688 .release = ib_port_release,
689 .sysfs_ops = &port_sysfs_ops,
690 .default_attrs = port_default_attrs
693 static struct kobj_type gid_attr_type = {
694 .sysfs_ops = &gid_attr_sysfs_ops,
695 .release = ib_port_gid_attr_release
698 static struct attribute **
699 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
700 struct port_attribute *, char *buf),
703 struct attribute **tab_attr;
704 struct port_table_attribute *element;
707 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
711 for (i = 0; i < len; i++) {
712 element = kzalloc(sizeof(struct port_table_attribute),
717 if (snprintf(element->name, sizeof(element->name),
718 "%d", i) >= sizeof(element->name)) {
723 element->attr.attr.name = element->name;
724 element->attr.attr.mode = S_IRUGO;
725 element->attr.show = show;
727 sysfs_attr_init(&element->attr.attr);
729 tab_attr[i] = &element->attr.attr;
742 * Figure out which counter table to use depending on
743 * the device capabilities.
745 static struct attribute_group *get_counter_table(struct ib_device *dev,
748 struct ib_class_port_info cpi;
750 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
751 &cpi, 40, sizeof(cpi)) >= 0) {
752 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
753 /* We have extended counters */
754 return &pma_group_ext;
756 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
757 /* But not the IETF ones */
758 return &pma_group_noietf;
761 /* Fall back to normal counters */
765 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
766 u8 port_num, int index)
770 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
772 ret = dev->get_hw_stats(dev, stats, port_num, index);
775 if (ret == stats->num_counters)
776 stats->timestamp = jiffies;
781 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
783 return sprintf(buf, "%llu\n", (unsigned long long)stats->value[index]);
786 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
789 struct ib_device *dev;
790 struct ib_port *port;
791 struct hw_stats_attribute *hsa;
792 struct rdma_hw_stats *stats;
795 hsa = container_of(attr, struct hw_stats_attribute, attr);
796 if (!hsa->port_num) {
797 dev = container_of((struct device *)kobj,
798 struct ib_device, dev);
799 stats = dev->hw_stats;
801 port = container_of(kobj, struct ib_port, kobj);
803 stats = port->hw_stats;
805 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
808 return print_hw_stat(stats, hsa->index, buf);
811 static ssize_t show_stats_lifespan(struct kobject *kobj,
812 struct attribute *attr,
815 struct hw_stats_attribute *hsa;
818 hsa = container_of(attr, struct hw_stats_attribute, attr);
819 if (!hsa->port_num) {
820 struct ib_device *dev = container_of((struct device *)kobj,
821 struct ib_device, dev);
822 msecs = jiffies_to_msecs(dev->hw_stats->lifespan);
824 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
825 msecs = jiffies_to_msecs(p->hw_stats->lifespan);
827 return sprintf(buf, "%d\n", msecs);
830 static ssize_t set_stats_lifespan(struct kobject *kobj,
831 struct attribute *attr,
832 const char *buf, size_t count)
834 struct hw_stats_attribute *hsa;
839 ret = kstrtoint(buf, 10, &msecs);
842 if (msecs < 0 || msecs > 10000)
844 jiffies = msecs_to_jiffies(msecs);
845 hsa = container_of(attr, struct hw_stats_attribute, attr);
846 if (!hsa->port_num) {
847 struct ib_device *dev = container_of((struct device *)kobj,
848 struct ib_device, dev);
849 dev->hw_stats->lifespan = jiffies;
851 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
852 p->hw_stats->lifespan = jiffies;
857 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
859 struct attribute **attr;
861 sysfs_remove_group(kobj, attr_group);
863 for (attr = attr_group->attrs; *attr; attr++)
868 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
870 struct hw_stats_attribute *hsa;
872 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
876 hsa->attr.name = __DECONST(char *, name);
877 hsa->attr.mode = S_IRUGO;
878 hsa->show = show_hw_stats;
881 hsa->port_num = port_num;
886 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
888 struct hw_stats_attribute *hsa;
890 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
894 hsa->attr.name = name;
895 hsa->attr.mode = S_IWUSR | S_IRUGO;
896 hsa->show = show_stats_lifespan;
897 hsa->store = set_stats_lifespan;
899 hsa->port_num = port_num;
904 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
907 struct attribute_group *hsag;
908 struct rdma_hw_stats *stats;
911 stats = device->alloc_hw_stats(device, port_num);
916 if (!stats->names || stats->num_counters <= 0)
920 * Two extra attribue elements here, one for the lifespan entry and
921 * one to NULL terminate the list for the sysfs core code
923 hsag = kzalloc(sizeof(*hsag) +
924 sizeof(void *) * (stats->num_counters + 2),
929 ret = device->get_hw_stats(device, stats, port_num,
930 stats->num_counters);
931 if (ret != stats->num_counters)
934 stats->timestamp = jiffies;
936 hsag->name = "hw_counters";
937 hsag->attrs = (void *)((char *)hsag + sizeof(*hsag));
939 for (i = 0; i < stats->num_counters; i++) {
940 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
943 sysfs_attr_init(hsag->attrs[i]);
946 /* treat an error here as non-fatal */
947 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
949 sysfs_attr_init(hsag->attrs[i]);
952 struct kobject *kobj = &port->kobj;
953 ret = sysfs_create_group(kobj, hsag);
956 port->hw_stats_ag = hsag;
957 port->hw_stats = stats;
959 struct kobject *kobj = &device->dev.kobj;
960 ret = sysfs_create_group(kobj, hsag);
963 device->hw_stats_ag = hsag;
964 device->hw_stats = stats;
971 kfree(hsag->attrs[i]);
979 static int add_port(struct ib_device *device, int port_num,
980 int (*port_callback)(struct ib_device *,
981 u8, struct kobject *))
984 struct ib_port_attr attr;
988 ret = ib_query_port(device, port_num, &attr);
992 p = kzalloc(sizeof *p, GFP_KERNEL);
997 p->port_num = port_num;
999 ret = kobject_init_and_add(&p->kobj, &port_type,
1000 device->ports_parent,
1007 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1008 if (!p->gid_attr_group) {
1013 p->gid_attr_group->port = p;
1014 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1015 &p->kobj, "gid_attrs");
1017 kfree(p->gid_attr_group);
1021 p->pma_table = get_counter_table(device, port_num);
1022 ret = sysfs_create_group(&p->kobj, p->pma_table);
1024 goto err_put_gid_attrs;
1026 p->gid_group.name = "gids";
1027 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1028 if (!p->gid_group.attrs) {
1030 goto err_remove_pma;
1033 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1037 p->gid_attr_group->ndev.name = "ndevs";
1038 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1040 if (!p->gid_attr_group->ndev.attrs) {
1042 goto err_remove_gid;
1045 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1046 &p->gid_attr_group->ndev);
1048 goto err_free_gid_ndev;
1050 p->gid_attr_group->type.name = "types";
1051 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1053 if (!p->gid_attr_group->type.attrs) {
1055 goto err_remove_gid_ndev;
1058 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1059 &p->gid_attr_group->type);
1061 goto err_free_gid_type;
1063 p->pkey_group.name = "pkeys";
1064 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1066 if (!p->pkey_group.attrs) {
1068 goto err_remove_gid_type;
1071 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1075 if (port_callback) {
1076 ret = port_callback(device, port_num, &p->kobj);
1078 goto err_remove_pkey;
1082 * If port == 0, it means we have only one port and the parent
1083 * device, not this port device, should be the holder of the
1086 if (device->alloc_hw_stats && port_num)
1087 setup_hw_stats(device, p, port_num);
1089 list_add_tail(&p->kobj.entry, &device->port_list);
1094 sysfs_remove_group(&p->kobj, &p->pkey_group);
1097 for (i = 0; i < attr.pkey_tbl_len; ++i)
1098 kfree(p->pkey_group.attrs[i]);
1100 kfree(p->pkey_group.attrs);
1101 p->pkey_group.attrs = NULL;
1103 err_remove_gid_type:
1104 sysfs_remove_group(&p->gid_attr_group->kobj,
1105 &p->gid_attr_group->type);
1108 for (i = 0; i < attr.gid_tbl_len; ++i)
1109 kfree(p->gid_attr_group->type.attrs[i]);
1111 kfree(p->gid_attr_group->type.attrs);
1112 p->gid_attr_group->type.attrs = NULL;
1114 err_remove_gid_ndev:
1115 sysfs_remove_group(&p->gid_attr_group->kobj,
1116 &p->gid_attr_group->ndev);
1119 for (i = 0; i < attr.gid_tbl_len; ++i)
1120 kfree(p->gid_attr_group->ndev.attrs[i]);
1122 kfree(p->gid_attr_group->ndev.attrs);
1123 p->gid_attr_group->ndev.attrs = NULL;
1126 sysfs_remove_group(&p->kobj, &p->gid_group);
1129 for (i = 0; i < attr.gid_tbl_len; ++i)
1130 kfree(p->gid_group.attrs[i]);
1132 kfree(p->gid_group.attrs);
1133 p->gid_group.attrs = NULL;
1136 sysfs_remove_group(&p->kobj, p->pma_table);
1139 kobject_put(&p->gid_attr_group->kobj);
1142 kobject_put(&p->kobj);
1146 static ssize_t show_node_type(struct device *device,
1147 struct device_attribute *attr, char *buf)
1149 struct ib_device *dev = container_of(device, struct ib_device, dev);
1151 switch (dev->node_type) {
1152 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1153 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1154 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1155 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1156 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1157 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1158 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1162 static ssize_t show_sys_image_guid(struct device *device,
1163 struct device_attribute *dev_attr, char *buf)
1165 struct ib_device *dev = container_of(device, struct ib_device, dev);
1167 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1168 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1169 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1170 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1171 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1174 static ssize_t show_node_guid(struct device *device,
1175 struct device_attribute *attr, char *buf)
1177 struct ib_device *dev = container_of(device, struct ib_device, dev);
1179 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1180 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1181 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1182 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1183 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1186 static ssize_t show_node_desc(struct device *device,
1187 struct device_attribute *attr, char *buf)
1189 struct ib_device *dev = container_of(device, struct ib_device, dev);
1191 return sprintf(buf, "%.64s\n", dev->node_desc);
1194 static ssize_t set_node_desc(struct device *device,
1195 struct device_attribute *attr,
1196 const char *buf, size_t count)
1198 struct ib_device *dev = container_of(device, struct ib_device, dev);
1199 struct ib_device_modify desc = {};
1202 if (!dev->modify_device)
1205 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1206 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1213 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1216 struct ib_device *dev = container_of(device, struct ib_device, dev);
1218 ib_get_device_fw_str(dev, buf, PAGE_SIZE);
1219 strlcat(buf, "\n", PAGE_SIZE);
1223 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1224 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1225 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1226 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1227 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1229 static struct device_attribute *ib_class_attributes[] = {
1230 &dev_attr_node_type,
1231 &dev_attr_sys_image_guid,
1232 &dev_attr_node_guid,
1233 &dev_attr_node_desc,
1237 static void free_port_list_attributes(struct ib_device *device)
1239 struct kobject *p, *t;
1241 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1242 struct ib_port *port = container_of(p, struct ib_port, kobj);
1243 list_del(&p->entry);
1244 if (port->hw_stats) {
1245 kfree(port->hw_stats);
1246 free_hsag(&port->kobj, port->hw_stats_ag);
1248 sysfs_remove_group(p, port->pma_table);
1249 sysfs_remove_group(p, &port->pkey_group);
1250 sysfs_remove_group(p, &port->gid_group);
1251 sysfs_remove_group(&port->gid_attr_group->kobj,
1252 &port->gid_attr_group->ndev);
1253 sysfs_remove_group(&port->gid_attr_group->kobj,
1254 &port->gid_attr_group->type);
1255 kobject_put(&port->gid_attr_group->kobj);
1259 kobject_put(device->ports_parent);
1262 int ib_device_register_sysfs(struct ib_device *device,
1263 int (*port_callback)(struct ib_device *,
1264 u8, struct kobject *))
1266 struct device *class_dev = &device->dev;
1270 device->dev.parent = device->dma_device;
1271 ret = dev_set_name(class_dev, "%s", device->name);
1275 ret = device_add(class_dev);
1279 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1280 ret = device_create_file(class_dev, ib_class_attributes[i]);
1282 goto err_unregister;
1285 device->ports_parent = kobject_create_and_add("ports",
1287 if (!device->ports_parent) {
1292 if (rdma_cap_ib_switch(device)) {
1293 ret = add_port(device, 0, port_callback);
1297 for (i = 1; i <= device->phys_port_cnt; ++i) {
1298 ret = add_port(device, i, port_callback);
1304 if (device->alloc_hw_stats)
1305 setup_hw_stats(device, NULL, 0);
1310 free_port_list_attributes(device);
1313 device_unregister(class_dev);
1319 void ib_device_unregister_sysfs(struct ib_device *device)
1323 /* Hold kobject until ib_dealloc_device() */
1324 kobject_get(&device->dev.kobj);
1326 free_port_list_attributes(device);
1328 if (device->hw_stats) {
1329 kfree(device->hw_stats);
1330 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1333 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1334 device_remove_file(&device->dev, ib_class_attributes[i]);
1336 device_unregister(&device->dev);