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>
48 struct gid_attr_group {
51 struct attribute_group ndev;
52 struct attribute_group type;
56 struct ib_device *ibdev;
57 struct gid_attr_group *gid_attr_group;
58 struct attribute_group gid_group;
59 struct attribute_group pkey_group;
60 struct attribute_group *pma_table;
61 struct attribute_group *hw_stats_ag;
62 struct rdma_hw_stats *hw_stats;
66 struct port_attribute {
67 struct attribute attr;
68 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
69 ssize_t (*store)(struct ib_port *, struct port_attribute *,
70 const char *buf, size_t count);
73 #define PORT_ATTR(_name, _mode, _show, _store) \
74 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
76 #define PORT_ATTR_RO(_name) \
77 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
79 struct port_table_attribute {
80 struct port_attribute attr;
86 struct hw_stats_attribute {
87 struct attribute attr;
88 ssize_t (*show)(struct kobject *kobj,
89 struct attribute *attr, char *buf);
90 ssize_t (*store)(struct kobject *kobj,
91 struct attribute *attr,
98 static ssize_t port_attr_show(struct kobject *kobj,
99 struct attribute *attr, char *buf)
101 struct port_attribute *port_attr =
102 container_of(attr, struct port_attribute, attr);
103 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
105 if (!port_attr->show)
108 return port_attr->show(p, port_attr, buf);
111 static const struct sysfs_ops port_sysfs_ops = {
112 .show = port_attr_show
115 static ssize_t gid_attr_show(struct kobject *kobj,
116 struct attribute *attr, char *buf)
118 struct port_attribute *port_attr =
119 container_of(attr, struct port_attribute, attr);
120 struct ib_port *p = container_of(kobj, struct gid_attr_group,
123 if (!port_attr->show)
126 return port_attr->show(p, port_attr, buf);
129 static const struct sysfs_ops gid_attr_sysfs_ops = {
130 .show = gid_attr_show
133 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
136 struct ib_port_attr attr;
139 static const char *state_name[] = {
140 [IB_PORT_NOP] = "NOP",
141 [IB_PORT_DOWN] = "DOWN",
142 [IB_PORT_INIT] = "INIT",
143 [IB_PORT_ARMED] = "ARMED",
144 [IB_PORT_ACTIVE] = "ACTIVE",
145 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
148 ret = ib_query_port(p->ibdev, p->port_num, &attr);
152 return sprintf(buf, "%d: %s\n", attr.state,
153 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
154 state_name[attr.state] : "UNKNOWN");
157 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
160 struct ib_port_attr attr;
163 ret = ib_query_port(p->ibdev, p->port_num, &attr);
167 return sprintf(buf, "0x%x\n", attr.lid);
170 static ssize_t lid_mask_count_show(struct ib_port *p,
171 struct port_attribute *unused,
174 struct ib_port_attr attr;
177 ret = ib_query_port(p->ibdev, p->port_num, &attr);
181 return sprintf(buf, "%d\n", attr.lmc);
184 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
187 struct ib_port_attr attr;
190 ret = ib_query_port(p->ibdev, p->port_num, &attr);
194 return sprintf(buf, "0x%x\n", attr.sm_lid);
197 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
200 struct ib_port_attr attr;
203 ret = ib_query_port(p->ibdev, p->port_num, &attr);
207 return sprintf(buf, "%d\n", attr.sm_sl);
210 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
213 struct ib_port_attr attr;
216 ret = ib_query_port(p->ibdev, p->port_num, &attr);
220 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
223 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
226 struct ib_port_attr attr;
228 int rate; /* in deci-Gb/sec */
231 ret = ib_query_port(p->ibdev, p->port_num, &attr);
235 switch (attr.active_speed) {
261 default: /* default to SDR for invalid rates */
266 rate *= ib_width_enum_to_int(attr.active_width);
270 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
271 rate / 10, rate % 10 ? ".5" : "",
272 ib_width_enum_to_int(attr.active_width), speed);
275 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
278 struct ib_port_attr attr;
282 ret = ib_query_port(p->ibdev, p->port_num, &attr);
286 switch (attr.phys_state) {
287 case 1: return sprintf(buf, "1: Sleep\n");
288 case 2: return sprintf(buf, "2: Polling\n");
289 case 3: return sprintf(buf, "3: Disabled\n");
290 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
291 case 5: return sprintf(buf, "5: LinkUp\n");
292 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
293 case 7: return sprintf(buf, "7: Phy Test\n");
294 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
298 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
301 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
302 case IB_LINK_LAYER_INFINIBAND:
303 return sprintf(buf, "%s\n", "InfiniBand");
304 case IB_LINK_LAYER_ETHERNET:
305 return sprintf(buf, "%s\n", "Ethernet");
307 return sprintf(buf, "%s\n", "Unknown");
311 static PORT_ATTR_RO(state);
312 static PORT_ATTR_RO(lid);
313 static PORT_ATTR_RO(lid_mask_count);
314 static PORT_ATTR_RO(sm_lid);
315 static PORT_ATTR_RO(sm_sl);
316 static PORT_ATTR_RO(cap_mask);
317 static PORT_ATTR_RO(rate);
318 static PORT_ATTR_RO(phys_state);
319 static PORT_ATTR_RO(link_layer);
321 static struct attribute *port_default_attrs[] = {
322 &port_attr_state.attr,
324 &port_attr_lid_mask_count.attr,
325 &port_attr_sm_lid.attr,
326 &port_attr_sm_sl.attr,
327 &port_attr_cap_mask.attr,
328 &port_attr_rate.attr,
329 &port_attr_phys_state.attr,
330 &port_attr_link_layer.attr,
334 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
339 return sprintf(buf, "%s\n", gid_attr->ndev->name);
342 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
344 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
347 static ssize_t _show_port_gid_attr(struct ib_port *p,
348 struct port_attribute *attr,
350 size_t (*print)(struct ib_gid_attr *gid_attr,
353 struct port_table_attribute *tab_attr =
354 container_of(attr, struct port_table_attribute, attr);
356 struct ib_gid_attr gid_attr = {};
359 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
364 ret = print(&gid_attr, buf);
368 dev_put(gid_attr.ndev);
372 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
375 struct port_table_attribute *tab_attr =
376 container_of(attr, struct port_table_attribute, attr);
380 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
384 return sprintf(buf, "%pI6\n", gid.raw);
387 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
388 struct port_attribute *attr, char *buf)
390 return _show_port_gid_attr(p, attr, buf, print_ndev);
393 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
394 struct port_attribute *attr,
397 return _show_port_gid_attr(p, attr, buf, print_gid_type);
400 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
403 struct port_table_attribute *tab_attr =
404 container_of(attr, struct port_table_attribute, attr);
408 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
412 return sprintf(buf, "0x%04x\n", pkey);
415 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
416 struct port_table_attribute port_pma_attr_##_name = { \
417 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
418 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
419 .attr_id = IB_PMA_PORT_COUNTERS , \
422 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
423 struct port_table_attribute port_pma_attr_ext_##_name = { \
424 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
425 .index = (_offset) | ((_width) << 16), \
426 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
430 * Get a Perfmgmt MAD block of data.
431 * Returns error code or the number of bytes retrieved.
433 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
434 void *data, int offset, size_t size)
436 struct ib_mad *in_mad;
437 struct ib_mad *out_mad;
438 size_t mad_size = sizeof(*out_mad);
439 u16 out_mad_pkey_index = 0;
442 if (!dev->process_mad)
445 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
446 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
447 if (!in_mad || !out_mad) {
452 in_mad->mad_hdr.base_version = 1;
453 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
454 in_mad->mad_hdr.class_version = 1;
455 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
456 in_mad->mad_hdr.attr_id = attr;
458 if (attr != IB_PMA_CLASS_PORT_INFO)
459 in_mad->data[41] = port_num; /* PortSelect field */
461 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
462 port_num, NULL, NULL,
463 (const struct ib_mad_hdr *)in_mad, mad_size,
464 (struct ib_mad_hdr *)out_mad, &mad_size,
465 &out_mad_pkey_index) &
466 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
467 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
471 memcpy(data, out_mad->data + offset, size);
479 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
482 struct port_table_attribute *tab_attr =
483 container_of(attr, struct port_table_attribute, attr);
484 int offset = tab_attr->index & 0xffff;
485 int width = (tab_attr->index >> 16) & 0xff;
489 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
490 40 + offset / 8, sizeof(data));
496 ret = sprintf(buf, "%u\n", (*data >>
497 (4 - (offset % 8))) & 0xf);
500 ret = sprintf(buf, "%u\n", *data);
503 ret = sprintf(buf, "%u\n",
504 be16_to_cpup((__be16 *)data));
507 ret = sprintf(buf, "%u\n",
508 be32_to_cpup((__be32 *)data));
511 ret = sprintf(buf, "%llu\n",
512 be64_to_cpup((__be64 *)data));
522 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
523 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
524 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
525 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
526 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
527 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
528 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
529 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
530 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
531 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
532 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
533 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
534 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
535 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
536 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
537 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
538 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
541 * Counters added by extended set
543 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
544 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
545 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
546 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
547 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
548 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
549 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
550 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
552 static struct attribute *pma_attrs[] = {
553 &port_pma_attr_symbol_error.attr.attr,
554 &port_pma_attr_link_error_recovery.attr.attr,
555 &port_pma_attr_link_downed.attr.attr,
556 &port_pma_attr_port_rcv_errors.attr.attr,
557 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
558 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
559 &port_pma_attr_port_xmit_discards.attr.attr,
560 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
561 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
562 &port_pma_attr_local_link_integrity_errors.attr.attr,
563 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
564 &port_pma_attr_VL15_dropped.attr.attr,
565 &port_pma_attr_port_xmit_data.attr.attr,
566 &port_pma_attr_port_rcv_data.attr.attr,
567 &port_pma_attr_port_xmit_packets.attr.attr,
568 &port_pma_attr_port_rcv_packets.attr.attr,
569 &port_pma_attr_port_xmit_wait.attr.attr,
573 static struct attribute *pma_attrs_ext[] = {
574 &port_pma_attr_symbol_error.attr.attr,
575 &port_pma_attr_link_error_recovery.attr.attr,
576 &port_pma_attr_link_downed.attr.attr,
577 &port_pma_attr_port_rcv_errors.attr.attr,
578 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
579 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
580 &port_pma_attr_port_xmit_discards.attr.attr,
581 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
582 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
583 &port_pma_attr_local_link_integrity_errors.attr.attr,
584 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
585 &port_pma_attr_VL15_dropped.attr.attr,
586 &port_pma_attr_ext_port_xmit_data.attr.attr,
587 &port_pma_attr_ext_port_rcv_data.attr.attr,
588 &port_pma_attr_ext_port_xmit_packets.attr.attr,
589 &port_pma_attr_port_xmit_wait.attr.attr,
590 &port_pma_attr_ext_port_rcv_packets.attr.attr,
591 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
592 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
593 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
594 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
598 static struct attribute *pma_attrs_noietf[] = {
599 &port_pma_attr_symbol_error.attr.attr,
600 &port_pma_attr_link_error_recovery.attr.attr,
601 &port_pma_attr_link_downed.attr.attr,
602 &port_pma_attr_port_rcv_errors.attr.attr,
603 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
604 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
605 &port_pma_attr_port_xmit_discards.attr.attr,
606 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
607 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
608 &port_pma_attr_local_link_integrity_errors.attr.attr,
609 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
610 &port_pma_attr_VL15_dropped.attr.attr,
611 &port_pma_attr_ext_port_xmit_data.attr.attr,
612 &port_pma_attr_ext_port_rcv_data.attr.attr,
613 &port_pma_attr_ext_port_xmit_packets.attr.attr,
614 &port_pma_attr_ext_port_rcv_packets.attr.attr,
615 &port_pma_attr_port_xmit_wait.attr.attr,
619 static struct attribute_group pma_group = {
624 static struct attribute_group pma_group_ext = {
626 .attrs = pma_attrs_ext
629 static struct attribute_group pma_group_noietf = {
631 .attrs = pma_attrs_noietf
634 static void ib_port_release(struct kobject *kobj)
636 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
640 if (p->gid_group.attrs) {
641 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
644 kfree(p->gid_group.attrs);
647 if (p->pkey_group.attrs) {
648 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
651 kfree(p->pkey_group.attrs);
657 static void ib_port_gid_attr_release(struct kobject *kobj)
659 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
665 for (i = 0; (a = g->ndev.attrs[i]); ++i)
668 kfree(g->ndev.attrs);
672 for (i = 0; (a = g->type.attrs[i]); ++i)
675 kfree(g->type.attrs);
681 static struct kobj_type port_type = {
682 .release = ib_port_release,
683 .sysfs_ops = &port_sysfs_ops,
684 .default_attrs = port_default_attrs
687 static struct kobj_type gid_attr_type = {
688 .sysfs_ops = &gid_attr_sysfs_ops,
689 .release = ib_port_gid_attr_release
692 static struct attribute **
693 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
694 struct port_attribute *, char *buf),
697 struct attribute **tab_attr;
698 struct port_table_attribute *element;
701 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
705 for (i = 0; i < len; i++) {
706 element = kzalloc(sizeof(struct port_table_attribute),
711 if (snprintf(element->name, sizeof(element->name),
712 "%d", i) >= sizeof(element->name)) {
717 element->attr.attr.name = element->name;
718 element->attr.attr.mode = S_IRUGO;
719 element->attr.show = show;
721 sysfs_attr_init(&element->attr.attr);
723 tab_attr[i] = &element->attr.attr;
736 * Figure out which counter table to use depending on
737 * the device capabilities.
739 static struct attribute_group *get_counter_table(struct ib_device *dev,
742 struct ib_class_port_info cpi;
744 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
745 &cpi, 40, sizeof(cpi)) >= 0) {
746 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
747 /* We have extended counters */
748 return &pma_group_ext;
750 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
751 /* But not the IETF ones */
752 return &pma_group_noietf;
755 /* Fall back to normal counters */
759 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
760 u8 port_num, int index)
764 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
766 ret = dev->get_hw_stats(dev, stats, port_num, index);
769 if (ret == stats->num_counters)
770 stats->timestamp = jiffies;
775 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
777 return sprintf(buf, "%llu\n", stats->value[index]);
780 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
783 struct ib_device *dev;
784 struct ib_port *port;
785 struct hw_stats_attribute *hsa;
786 struct rdma_hw_stats *stats;
789 hsa = container_of(attr, struct hw_stats_attribute, attr);
790 if (!hsa->port_num) {
791 dev = container_of((struct device *)kobj,
792 struct ib_device, dev);
793 stats = dev->hw_stats;
795 port = container_of(kobj, struct ib_port, kobj);
797 stats = port->hw_stats;
799 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
802 return print_hw_stat(stats, hsa->index, buf);
805 static ssize_t show_stats_lifespan(struct kobject *kobj,
806 struct attribute *attr,
809 struct hw_stats_attribute *hsa;
812 hsa = container_of(attr, struct hw_stats_attribute, attr);
813 if (!hsa->port_num) {
814 struct ib_device *dev = container_of((struct device *)kobj,
815 struct ib_device, dev);
816 msecs = jiffies_to_msecs(dev->hw_stats->lifespan);
818 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
819 msecs = jiffies_to_msecs(p->hw_stats->lifespan);
821 return sprintf(buf, "%d\n", msecs);
824 static ssize_t set_stats_lifespan(struct kobject *kobj,
825 struct attribute *attr,
826 const char *buf, size_t count)
828 struct hw_stats_attribute *hsa;
833 ret = kstrtoint(buf, 10, &msecs);
836 if (msecs < 0 || msecs > 10000)
838 jiffies = msecs_to_jiffies(msecs);
839 hsa = container_of(attr, struct hw_stats_attribute, attr);
840 if (!hsa->port_num) {
841 struct ib_device *dev = container_of((struct device *)kobj,
842 struct ib_device, dev);
843 dev->hw_stats->lifespan = jiffies;
845 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
846 p->hw_stats->lifespan = jiffies;
851 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
853 struct attribute **attr;
855 sysfs_remove_group(kobj, attr_group);
857 for (attr = attr_group->attrs; *attr; attr++)
862 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
864 struct hw_stats_attribute *hsa;
866 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
870 hsa->attr.name = (char *)name;
871 hsa->attr.mode = S_IRUGO;
872 hsa->show = show_hw_stats;
875 hsa->port_num = port_num;
880 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
882 struct hw_stats_attribute *hsa;
884 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
888 hsa->attr.name = name;
889 hsa->attr.mode = S_IWUSR | S_IRUGO;
890 hsa->show = show_stats_lifespan;
891 hsa->store = set_stats_lifespan;
893 hsa->port_num = port_num;
898 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
901 struct attribute_group *hsag;
902 struct rdma_hw_stats *stats;
905 stats = device->alloc_hw_stats(device, port_num);
910 if (!stats->names || stats->num_counters <= 0)
914 * Two extra attribue elements here, one for the lifespan entry and
915 * one to NULL terminate the list for the sysfs core code
917 hsag = kzalloc(sizeof(*hsag) +
918 sizeof(void *) * (stats->num_counters + 2),
923 ret = device->get_hw_stats(device, stats, port_num,
924 stats->num_counters);
925 if (ret != stats->num_counters)
928 stats->timestamp = jiffies;
930 hsag->name = "hw_counters";
931 hsag->attrs = (void *)hsag + sizeof(*hsag);
933 for (i = 0; i < stats->num_counters; i++) {
934 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
937 sysfs_attr_init(hsag->attrs[i]);
940 /* treat an error here as non-fatal */
941 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
943 sysfs_attr_init(hsag->attrs[i]);
946 struct kobject *kobj = &port->kobj;
947 ret = sysfs_create_group(kobj, hsag);
950 port->hw_stats_ag = hsag;
951 port->hw_stats = stats;
953 struct kobject *kobj = &device->dev.kobj;
954 ret = sysfs_create_group(kobj, hsag);
957 device->hw_stats_ag = hsag;
958 device->hw_stats = stats;
965 kfree(hsag->attrs[i]);
973 static int add_port(struct ib_device *device, int port_num,
974 int (*port_callback)(struct ib_device *,
975 u8, struct kobject *))
978 struct ib_port_attr attr;
982 ret = ib_query_port(device, port_num, &attr);
986 p = kzalloc(sizeof *p, GFP_KERNEL);
991 p->port_num = port_num;
993 ret = kobject_init_and_add(&p->kobj, &port_type,
994 device->ports_parent,
1001 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1002 if (!p->gid_attr_group) {
1007 p->gid_attr_group->port = p;
1008 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1009 &p->kobj, "gid_attrs");
1011 kfree(p->gid_attr_group);
1015 if (device->process_mad) {
1016 p->pma_table = get_counter_table(device, port_num);
1017 ret = sysfs_create_group(&p->kobj, p->pma_table);
1019 goto err_put_gid_attrs;
1022 p->gid_group.name = "gids";
1023 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1024 if (!p->gid_group.attrs) {
1026 goto err_remove_pma;
1029 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1033 p->gid_attr_group->ndev.name = "ndevs";
1034 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1036 if (!p->gid_attr_group->ndev.attrs) {
1038 goto err_remove_gid;
1041 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1042 &p->gid_attr_group->ndev);
1044 goto err_free_gid_ndev;
1046 p->gid_attr_group->type.name = "types";
1047 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1049 if (!p->gid_attr_group->type.attrs) {
1051 goto err_remove_gid_ndev;
1054 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1055 &p->gid_attr_group->type);
1057 goto err_free_gid_type;
1059 p->pkey_group.name = "pkeys";
1060 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1062 if (!p->pkey_group.attrs) {
1064 goto err_remove_gid_type;
1067 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1071 if (port_callback) {
1072 ret = port_callback(device, port_num, &p->kobj);
1074 goto err_remove_pkey;
1078 * If port == 0, it means we have only one port and the parent
1079 * device, not this port device, should be the holder of the
1082 if (device->alloc_hw_stats && port_num)
1083 setup_hw_stats(device, p, port_num);
1085 list_add_tail(&p->kobj.entry, &device->port_list);
1087 kobject_uevent(&p->kobj, KOBJ_ADD);
1091 sysfs_remove_group(&p->kobj, &p->pkey_group);
1094 for (i = 0; i < attr.pkey_tbl_len; ++i)
1095 kfree(p->pkey_group.attrs[i]);
1097 kfree(p->pkey_group.attrs);
1098 p->pkey_group.attrs = NULL;
1100 err_remove_gid_type:
1101 sysfs_remove_group(&p->gid_attr_group->kobj,
1102 &p->gid_attr_group->type);
1105 for (i = 0; i < attr.gid_tbl_len; ++i)
1106 kfree(p->gid_attr_group->type.attrs[i]);
1108 kfree(p->gid_attr_group->type.attrs);
1109 p->gid_attr_group->type.attrs = NULL;
1111 err_remove_gid_ndev:
1112 sysfs_remove_group(&p->gid_attr_group->kobj,
1113 &p->gid_attr_group->ndev);
1116 for (i = 0; i < attr.gid_tbl_len; ++i)
1117 kfree(p->gid_attr_group->ndev.attrs[i]);
1119 kfree(p->gid_attr_group->ndev.attrs);
1120 p->gid_attr_group->ndev.attrs = NULL;
1123 sysfs_remove_group(&p->kobj, &p->gid_group);
1126 for (i = 0; i < attr.gid_tbl_len; ++i)
1127 kfree(p->gid_group.attrs[i]);
1129 kfree(p->gid_group.attrs);
1130 p->gid_group.attrs = NULL;
1134 sysfs_remove_group(&p->kobj, p->pma_table);
1137 kobject_put(&p->gid_attr_group->kobj);
1140 kobject_put(&p->kobj);
1144 static ssize_t show_node_type(struct device *device,
1145 struct device_attribute *attr, char *buf)
1147 struct ib_device *dev = container_of(device, struct ib_device, dev);
1149 switch (dev->node_type) {
1150 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1151 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1152 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1153 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1154 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1155 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1156 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1160 static ssize_t show_sys_image_guid(struct device *device,
1161 struct device_attribute *dev_attr, char *buf)
1163 struct ib_device *dev = container_of(device, struct ib_device, dev);
1165 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1166 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1167 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1168 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1169 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1172 static ssize_t show_node_guid(struct device *device,
1173 struct device_attribute *attr, char *buf)
1175 struct ib_device *dev = container_of(device, struct ib_device, dev);
1177 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1178 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1179 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1180 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1181 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1184 static ssize_t show_node_desc(struct device *device,
1185 struct device_attribute *attr, char *buf)
1187 struct ib_device *dev = container_of(device, struct ib_device, dev);
1189 return sprintf(buf, "%.64s\n", dev->node_desc);
1192 static ssize_t set_node_desc(struct device *device,
1193 struct device_attribute *attr,
1194 const char *buf, size_t count)
1196 struct ib_device *dev = container_of(device, struct ib_device, dev);
1197 struct ib_device_modify desc = {};
1200 if (!dev->modify_device)
1203 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1204 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1211 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1214 struct ib_device *dev = container_of(device, struct ib_device, dev);
1216 ib_get_device_fw_str(dev, buf);
1217 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1221 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1222 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1223 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1224 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1225 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1227 static struct device_attribute *ib_class_attributes[] = {
1228 &dev_attr_node_type,
1229 &dev_attr_sys_image_guid,
1230 &dev_attr_node_guid,
1231 &dev_attr_node_desc,
1235 static void free_port_list_attributes(struct ib_device *device)
1237 struct kobject *p, *t;
1239 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1240 struct ib_port *port = container_of(p, struct ib_port, kobj);
1241 list_del(&p->entry);
1242 if (port->hw_stats) {
1243 kfree(port->hw_stats);
1244 free_hsag(&port->kobj, port->hw_stats_ag);
1247 if (port->pma_table)
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 ret = dev_set_name(class_dev, "%s", device->name);
1274 ret = device_add(class_dev);
1278 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1279 ret = device_create_file(class_dev, ib_class_attributes[i]);
1281 goto err_unregister;
1284 device->ports_parent = kobject_create_and_add("ports",
1286 if (!device->ports_parent) {
1291 if (rdma_cap_ib_switch(device)) {
1292 ret = add_port(device, 0, port_callback);
1296 for (i = 1; i <= device->phys_port_cnt; ++i) {
1297 ret = add_port(device, i, port_callback);
1303 if (device->alloc_hw_stats)
1304 setup_hw_stats(device, NULL, 0);
1309 free_port_list_attributes(device);
1312 device_del(class_dev);
1318 void ib_device_unregister_sysfs(struct ib_device *device)
1322 /* Hold kobject until ib_dealloc_device() */
1323 kobject_get(&device->dev.kobj);
1325 free_port_list_attributes(device);
1327 if (device->hw_stats) {
1328 kfree(device->hw_stats);
1329 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1332 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1333 device_remove_file(&device->dev, ib_class_attributes[i]);
1335 device_unregister(&device->dev);