/* * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "core_priv.h" #include #include #include #include #include #include #include #include struct ib_port; struct gid_attr_group { struct ib_port *port; struct kobject kobj; struct attribute_group ndev; struct attribute_group type; }; struct ib_port { struct kobject kobj; struct ib_device *ibdev; struct gid_attr_group *gid_attr_group; struct attribute_group gid_group; struct attribute_group pkey_group; struct attribute_group *pma_table; struct attribute_group *hw_stats_ag; struct rdma_hw_stats *hw_stats; u8 port_num; }; struct port_attribute { struct attribute attr; ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); ssize_t (*store)(struct ib_port *, struct port_attribute *, const char *buf, size_t count); }; #define PORT_ATTR(_name, _mode, _show, _store) \ struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) #define PORT_ATTR_RO(_name) \ struct port_attribute port_attr_##_name = __ATTR_RO(_name) struct port_table_attribute { struct port_attribute attr; char name[8]; int index; __be16 attr_id; }; struct hw_stats_attribute { struct attribute attr; ssize_t (*show)(struct kobject *kobj, struct attribute *attr, char *buf); ssize_t (*store)(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count); int index; u8 port_num; }; static ssize_t port_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct port_attribute *port_attr = container_of(attr, struct port_attribute, attr); struct ib_port *p = container_of(kobj, struct ib_port, kobj); if (!port_attr->show) return -EIO; return port_attr->show(p, port_attr, buf); } static ssize_t port_attr_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { struct port_attribute *port_attr = container_of(attr, struct port_attribute, attr); struct ib_port *p = container_of(kobj, struct ib_port, kobj); if (!port_attr->store) return -EIO; return port_attr->store(p, port_attr, buf, count); } static const struct sysfs_ops port_sysfs_ops = { .show = port_attr_show, .store = port_attr_store }; static ssize_t gid_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct port_attribute *port_attr = container_of(attr, struct port_attribute, attr); struct ib_port *p = container_of(kobj, struct gid_attr_group, kobj)->port; if (!port_attr->show) return -EIO; return port_attr->show(p, port_attr, buf); } static const struct sysfs_ops gid_attr_sysfs_ops = { .show = gid_attr_show }; static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; static const char *state_name[] = { [IB_PORT_NOP] = "NOP", [IB_PORT_DOWN] = "DOWN", [IB_PORT_INIT] = "INIT", [IB_PORT_ARMED] = "ARMED", [IB_PORT_ACTIVE] = "ACTIVE", [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" }; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "%d: %s\n", attr.state, attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? state_name[attr.state] : "UNKNOWN"); } static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "0x%x\n", attr.lid); } static ssize_t lid_mask_count_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "%d\n", attr.lmc); } static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "0x%x\n", attr.sm_lid); } static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "%d\n", attr.sm_sl); } static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; return sprintf(buf, "0x%08x\n", attr.port_cap_flags); } static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; char *speed = ""; int rate; /* in deci-Gb/sec */ ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; switch (attr.active_speed) { case IB_SPEED_DDR: speed = " DDR"; rate = 50; break; case IB_SPEED_QDR: speed = " QDR"; rate = 100; break; case IB_SPEED_FDR10: speed = " FDR10"; rate = 100; break; case IB_SPEED_FDR: speed = " FDR"; rate = 140; break; case IB_SPEED_EDR: speed = " EDR"; rate = 250; break; case IB_SPEED_HDR: speed = " HDR"; rate = 500; break; case IB_SPEED_SDR: default: /* default to SDR for invalid rates */ speed = " SDR"; rate = 25; break; } rate *= ib_width_enum_to_int(attr.active_width); if (rate < 0) return -EINVAL; return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", rate / 10, rate % 10 ? ".5" : "", ib_width_enum_to_int(attr.active_width), speed); } static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, char *buf) { struct ib_port_attr attr; ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; switch (attr.phys_state) { case 1: return sprintf(buf, "1: Sleep\n"); case 2: return sprintf(buf, "2: Polling\n"); case 3: return sprintf(buf, "3: Disabled\n"); case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); case 5: return sprintf(buf, "5: LinkUp\n"); case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); case 7: return sprintf(buf, "7: Phy Test\n"); default: return sprintf(buf, "%d: \n", attr.phys_state); } } static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, char *buf) { switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { case IB_LINK_LAYER_INFINIBAND: return sprintf(buf, "%s\n", "InfiniBand"); case IB_LINK_LAYER_ETHERNET: return sprintf(buf, "%s\n", "Ethernet"); default: return sprintf(buf, "%s\n", "Unknown"); } } static PORT_ATTR_RO(state); static PORT_ATTR_RO(lid); static PORT_ATTR_RO(lid_mask_count); static PORT_ATTR_RO(sm_lid); static PORT_ATTR_RO(sm_sl); static PORT_ATTR_RO(cap_mask); static PORT_ATTR_RO(rate); static PORT_ATTR_RO(phys_state); static PORT_ATTR_RO(link_layer); static struct attribute *port_default_attrs[] = { &port_attr_state.attr, &port_attr_lid.attr, &port_attr_lid_mask_count.attr, &port_attr_sm_lid.attr, &port_attr_sm_sl.attr, &port_attr_cap_mask.attr, &port_attr_rate.attr, &port_attr_phys_state.attr, &port_attr_link_layer.attr, NULL }; static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf) { if (!gid_attr->ndev) return -EINVAL; return sprintf(buf, "%s\n", gid_attr->ndev->name); } static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf) { return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); } static ssize_t _show_port_gid_attr( struct ib_port *p, struct port_attribute *attr, char *buf, size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf)) { struct port_table_attribute *tab_attr = container_of(attr, struct port_table_attribute, attr); const struct ib_gid_attr *gid_attr; ssize_t ret; gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index); if (IS_ERR(gid_attr)) return PTR_ERR(gid_attr); ret = print(gid_attr, buf); rdma_put_gid_attr(gid_attr); return ret; } static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, char *buf) { struct port_table_attribute *tab_attr = container_of(attr, struct port_table_attribute, attr); const struct ib_gid_attr *gid_attr; ssize_t ret; gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index); if (IS_ERR(gid_attr)) { const union ib_gid zgid = {}; /* If reading GID fails, it is likely due to GID entry being * empty (invalid) or reserved GID in the table. User space * expects to read GID table entries as long as it given index * is within GID table size. Administrative/debugging tool * fails to query rest of the GID entries if it hits error * while querying a GID of the given index. To avoid user * space throwing such error on fail to read gid, return zero * GID as before. This maintains backward compatibility. */ return sprintf(buf, "%pI6\n", zgid.raw); } ret = sprintf(buf, "%pI6\n", gid_attr->gid.raw); rdma_put_gid_attr(gid_attr); return ret; } static ssize_t show_port_gid_attr_ndev(struct ib_port *p, struct port_attribute *attr, char *buf) { return _show_port_gid_attr(p, attr, buf, print_ndev); } static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, struct port_attribute *attr, char *buf) { return _show_port_gid_attr(p, attr, buf, print_gid_type); } static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, char *buf) { struct port_table_attribute *tab_attr = container_of(attr, struct port_table_attribute, attr); u16 pkey; ssize_t ret; ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); if (ret) return ret; return sprintf(buf, "0x%04x\n", pkey); } #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ struct port_table_attribute port_pma_attr_##_name = { \ .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ .attr_id = IB_PMA_PORT_COUNTERS , \ } #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ struct port_table_attribute port_pma_attr_ext_##_name = { \ .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ .index = (_offset) | ((_width) << 16), \ .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ } /* * Get a Perfmgmt MAD block of data. * Returns error code or the number of bytes retrieved. */ static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, void *data, int offset, size_t size) { struct ib_mad *in_mad; struct ib_mad *out_mad; size_t mad_size = sizeof(*out_mad); u16 out_mad_pkey_index = 0; ssize_t ret; if (!dev->process_mad) return -ENOSYS; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) { ret = -ENOMEM; goto out; } in_mad->mad_hdr.base_version = 1; in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; in_mad->mad_hdr.class_version = 1; in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; in_mad->mad_hdr.attr_id = attr; if (attr != IB_PMA_CLASS_PORT_INFO) in_mad->data[41] = port_num; /* PortSelect field */ if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL, (const struct ib_mad_hdr *)in_mad, mad_size, (struct ib_mad_hdr *)out_mad, &mad_size, &out_mad_pkey_index) & (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { ret = -EINVAL; goto out; } memcpy(data, out_mad->data + offset, size); ret = size; out: kfree(in_mad); kfree(out_mad); return ret; } static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, char *buf) { struct port_table_attribute *tab_attr = container_of(attr, struct port_table_attribute, attr); int offset = tab_attr->index & 0xffff; int width = (tab_attr->index >> 16) & 0xff; ssize_t ret; u8 data[8]; ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 40 + offset / 8, sizeof(data)); if (ret < 0) return sprintf(buf, "N/A (no PMA)\n"); switch (width) { case 4: ret = sprintf(buf, "%u\n", (*data >> (4 - (offset % 8))) & 0xf); break; case 8: ret = sprintf(buf, "%u\n", *data); break; case 16: ret = sprintf(buf, "%u\n", be16_to_cpup((__be16 *)data)); break; case 32: ret = sprintf(buf, "%u\n", be32_to_cpup((__be32 *)data)); break; case 64: ret = sprintf(buf, "%llu\n", be64_to_cpup((__be64 *)data)); break; default: ret = 0; } return ret; } static PORT_PMA_ATTR(symbol_error , 0, 16, 32); static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); static PORT_PMA_ATTR(link_downed , 2, 8, 56); static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); /* * Counters added by extended set */ static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); static struct attribute *pma_attrs[] = { &port_pma_attr_symbol_error.attr.attr, &port_pma_attr_link_error_recovery.attr.attr, &port_pma_attr_link_downed.attr.attr, &port_pma_attr_port_rcv_errors.attr.attr, &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, &port_pma_attr_port_xmit_discards.attr.attr, &port_pma_attr_port_xmit_constraint_errors.attr.attr, &port_pma_attr_port_rcv_constraint_errors.attr.attr, &port_pma_attr_local_link_integrity_errors.attr.attr, &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, &port_pma_attr_VL15_dropped.attr.attr, &port_pma_attr_port_xmit_data.attr.attr, &port_pma_attr_port_rcv_data.attr.attr, &port_pma_attr_port_xmit_packets.attr.attr, &port_pma_attr_port_rcv_packets.attr.attr, &port_pma_attr_port_xmit_wait.attr.attr, NULL }; static struct attribute *pma_attrs_ext[] = { &port_pma_attr_symbol_error.attr.attr, &port_pma_attr_link_error_recovery.attr.attr, &port_pma_attr_link_downed.attr.attr, &port_pma_attr_port_rcv_errors.attr.attr, &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, &port_pma_attr_port_xmit_discards.attr.attr, &port_pma_attr_port_xmit_constraint_errors.attr.attr, &port_pma_attr_port_rcv_constraint_errors.attr.attr, &port_pma_attr_local_link_integrity_errors.attr.attr, &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, &port_pma_attr_VL15_dropped.attr.attr, &port_pma_attr_ext_port_xmit_data.attr.attr, &port_pma_attr_ext_port_rcv_data.attr.attr, &port_pma_attr_ext_port_xmit_packets.attr.attr, &port_pma_attr_port_xmit_wait.attr.attr, &port_pma_attr_ext_port_rcv_packets.attr.attr, &port_pma_attr_ext_unicast_rcv_packets.attr.attr, &port_pma_attr_ext_unicast_xmit_packets.attr.attr, &port_pma_attr_ext_multicast_rcv_packets.attr.attr, &port_pma_attr_ext_multicast_xmit_packets.attr.attr, NULL }; static struct attribute *pma_attrs_noietf[] = { &port_pma_attr_symbol_error.attr.attr, &port_pma_attr_link_error_recovery.attr.attr, &port_pma_attr_link_downed.attr.attr, &port_pma_attr_port_rcv_errors.attr.attr, &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, &port_pma_attr_port_xmit_discards.attr.attr, &port_pma_attr_port_xmit_constraint_errors.attr.attr, &port_pma_attr_port_rcv_constraint_errors.attr.attr, &port_pma_attr_local_link_integrity_errors.attr.attr, &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, &port_pma_attr_VL15_dropped.attr.attr, &port_pma_attr_ext_port_xmit_data.attr.attr, &port_pma_attr_ext_port_rcv_data.attr.attr, &port_pma_attr_ext_port_xmit_packets.attr.attr, &port_pma_attr_ext_port_rcv_packets.attr.attr, &port_pma_attr_port_xmit_wait.attr.attr, NULL }; static struct attribute_group pma_group = { .name = "counters", .attrs = pma_attrs }; static struct attribute_group pma_group_ext = { .name = "counters", .attrs = pma_attrs_ext }; static struct attribute_group pma_group_noietf = { .name = "counters", .attrs = pma_attrs_noietf }; static void ib_port_release(struct kobject *kobj) { struct ib_port *p = container_of(kobj, struct ib_port, kobj); struct attribute *a; int i; if (p->gid_group.attrs) { for (i = 0; (a = p->gid_group.attrs[i]); ++i) kfree(a); kfree(p->gid_group.attrs); } if (p->pkey_group.attrs) { for (i = 0; (a = p->pkey_group.attrs[i]); ++i) kfree(a); kfree(p->pkey_group.attrs); } kfree(p); } static void ib_port_gid_attr_release(struct kobject *kobj) { struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, kobj); struct attribute *a; int i; if (g->ndev.attrs) { for (i = 0; (a = g->ndev.attrs[i]); ++i) kfree(a); kfree(g->ndev.attrs); } if (g->type.attrs) { for (i = 0; (a = g->type.attrs[i]); ++i) kfree(a); kfree(g->type.attrs); } kfree(g); } static struct kobj_type port_type = { .release = ib_port_release, .sysfs_ops = &port_sysfs_ops, .default_attrs = port_default_attrs }; static struct kobj_type gid_attr_type = { .sysfs_ops = &gid_attr_sysfs_ops, .release = ib_port_gid_attr_release }; static struct attribute ** alloc_group_attrs(ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf), int len) { struct attribute **tab_attr; struct port_table_attribute *element; int i; tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); if (!tab_attr) return NULL; for (i = 0; i < len; i++) { element = kzalloc(sizeof(struct port_table_attribute), GFP_KERNEL); if (!element) goto err; if (snprintf(element->name, sizeof(element->name), "%d", i) >= sizeof(element->name)) { kfree(element); goto err; } element->attr.attr.name = element->name; element->attr.attr.mode = S_IRUGO; element->attr.show = show; element->index = i; sysfs_attr_init(&element->attr.attr); tab_attr[i] = &element->attr.attr; } return tab_attr; err: while (--i >= 0) kfree(tab_attr[i]); kfree(tab_attr); return NULL; } /* * Figure out which counter table to use depending on * the device capabilities. */ static struct attribute_group *get_counter_table(struct ib_device *dev, int port_num) { struct ib_class_port_info cpi; if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, &cpi, 40, sizeof(cpi)) >= 0) { if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) /* We have extended counters */ return &pma_group_ext; if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) /* But not the IETF ones */ return &pma_group_noietf; } /* Fall back to normal counters */ return &pma_group; } static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, u8 port_num, int index) { int ret; if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) return 0; ret = dev->get_hw_stats(dev, stats, port_num, index); if (ret < 0) return ret; if (ret == stats->num_counters) stats->timestamp = jiffies; return 0; } static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) { return sprintf(buf, "%llu\n", stats->value[index]); } static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, char *buf) { struct ib_device *dev; struct ib_port *port; struct hw_stats_attribute *hsa; struct rdma_hw_stats *stats; int ret; hsa = container_of(attr, struct hw_stats_attribute, attr); if (!hsa->port_num) { dev = container_of((struct device *)kobj, struct ib_device, dev); stats = dev->hw_stats; } else { port = container_of(kobj, struct ib_port, kobj); dev = port->ibdev; stats = port->hw_stats; } mutex_lock(&stats->lock); ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); if (ret) goto unlock; ret = print_hw_stat(stats, hsa->index, buf); unlock: mutex_unlock(&stats->lock); return ret; } static ssize_t show_stats_lifespan(struct kobject *kobj, struct attribute *attr, char *buf) { struct hw_stats_attribute *hsa; struct rdma_hw_stats *stats; int msecs; hsa = container_of(attr, struct hw_stats_attribute, attr); if (!hsa->port_num) { struct ib_device *dev = container_of((struct device *)kobj, struct ib_device, dev); stats = dev->hw_stats; } else { struct ib_port *p = container_of(kobj, struct ib_port, kobj); stats = p->hw_stats; } mutex_lock(&stats->lock); msecs = jiffies_to_msecs(stats->lifespan); mutex_unlock(&stats->lock); return sprintf(buf, "%d\n", msecs); } static ssize_t set_stats_lifespan(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { struct hw_stats_attribute *hsa; struct rdma_hw_stats *stats; int msecs; int jiffies; int ret; ret = kstrtoint(buf, 10, &msecs); if (ret) return ret; if (msecs < 0 || msecs > 10000) return -EINVAL; jiffies = msecs_to_jiffies(msecs); hsa = container_of(attr, struct hw_stats_attribute, attr); if (!hsa->port_num) { struct ib_device *dev = container_of((struct device *)kobj, struct ib_device, dev); stats = dev->hw_stats; } else { struct ib_port *p = container_of(kobj, struct ib_port, kobj); stats = p->hw_stats; } mutex_lock(&stats->lock); stats->lifespan = jiffies; mutex_unlock(&stats->lock); return count; } static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) { struct attribute **attr; sysfs_remove_group(kobj, attr_group); for (attr = attr_group->attrs; *attr; attr++) kfree(*attr); kfree(attr_group); } static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) { struct hw_stats_attribute *hsa; hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); if (!hsa) return NULL; hsa->attr.name = (char *)name; hsa->attr.mode = S_IRUGO; hsa->show = show_hw_stats; hsa->store = NULL; hsa->index = index; hsa->port_num = port_num; return &hsa->attr; } static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) { struct hw_stats_attribute *hsa; hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); if (!hsa) return NULL; hsa->attr.name = name; hsa->attr.mode = S_IWUSR | S_IRUGO; hsa->show = show_stats_lifespan; hsa->store = set_stats_lifespan; hsa->index = 0; hsa->port_num = port_num; return &hsa->attr; } static void setup_hw_stats(struct ib_device *device, struct ib_port *port, u8 port_num) { struct attribute_group *hsag; struct rdma_hw_stats *stats; int i, ret; stats = device->alloc_hw_stats(device, port_num); if (!stats) return; if (!stats->names || stats->num_counters <= 0) goto err_free_stats; /* * Two extra attribue elements here, one for the lifespan entry and * one to NULL terminate the list for the sysfs core code */ hsag = kzalloc(sizeof(*hsag) + sizeof(void *) * (stats->num_counters + 2), GFP_KERNEL); if (!hsag) goto err_free_stats; ret = device->get_hw_stats(device, stats, port_num, stats->num_counters); if (ret != stats->num_counters) goto err_free_hsag; stats->timestamp = jiffies; hsag->name = "hw_counters"; hsag->attrs = (void *)hsag + sizeof(*hsag); for (i = 0; i < stats->num_counters; i++) { hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); if (!hsag->attrs[i]) goto err; sysfs_attr_init(hsag->attrs[i]); } mutex_init(&stats->lock); /* treat an error here as non-fatal */ hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); if (hsag->attrs[i]) sysfs_attr_init(hsag->attrs[i]); if (port) { struct kobject *kobj = &port->kobj; ret = sysfs_create_group(kobj, hsag); if (ret) goto err; port->hw_stats_ag = hsag; port->hw_stats = stats; } else { struct kobject *kobj = &device->dev.kobj; ret = sysfs_create_group(kobj, hsag); if (ret) goto err; device->hw_stats_ag = hsag; device->hw_stats = stats; } return; err: for (; i >= 0; i--) kfree(hsag->attrs[i]); err_free_hsag: kfree(hsag); err_free_stats: kfree(stats); return; } static int add_port(struct ib_device *device, int port_num, int (*port_callback)(struct ib_device *, u8, struct kobject *)) { struct ib_port *p; struct ib_port_attr attr; int i; int ret; ret = ib_query_port(device, port_num, &attr); if (ret) return ret; p = kzalloc(sizeof *p, GFP_KERNEL); if (!p) return -ENOMEM; p->ibdev = device; p->port_num = port_num; ret = kobject_init_and_add(&p->kobj, &port_type, device->ports_parent, "%d", port_num); if (ret) { kfree(p); return ret; } p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); if (!p->gid_attr_group) { ret = -ENOMEM; goto err_put; } p->gid_attr_group->port = p; ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, &p->kobj, "gid_attrs"); if (ret) { kfree(p->gid_attr_group); goto err_put; } p->pma_table = get_counter_table(device, port_num); ret = sysfs_create_group(&p->kobj, p->pma_table); if (ret) goto err_put_gid_attrs; p->gid_group.name = "gids"; p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); if (!p->gid_group.attrs) { ret = -ENOMEM; goto err_remove_pma; } ret = sysfs_create_group(&p->kobj, &p->gid_group); if (ret) goto err_free_gid; p->gid_attr_group->ndev.name = "ndevs"; p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, attr.gid_tbl_len); if (!p->gid_attr_group->ndev.attrs) { ret = -ENOMEM; goto err_remove_gid; } ret = sysfs_create_group(&p->gid_attr_group->kobj, &p->gid_attr_group->ndev); if (ret) goto err_free_gid_ndev; p->gid_attr_group->type.name = "types"; p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, attr.gid_tbl_len); if (!p->gid_attr_group->type.attrs) { ret = -ENOMEM; goto err_remove_gid_ndev; } ret = sysfs_create_group(&p->gid_attr_group->kobj, &p->gid_attr_group->type); if (ret) goto err_free_gid_type; p->pkey_group.name = "pkeys"; p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, attr.pkey_tbl_len); if (!p->pkey_group.attrs) { ret = -ENOMEM; goto err_remove_gid_type; } ret = sysfs_create_group(&p->kobj, &p->pkey_group); if (ret) goto err_free_pkey; if (port_callback) { ret = port_callback(device, port_num, &p->kobj); if (ret) goto err_remove_pkey; } /* * If port == 0, it means we have only one port and the parent * device, not this port device, should be the holder of the * hw_counters */ if (device->alloc_hw_stats && port_num) setup_hw_stats(device, p, port_num); list_add_tail(&p->kobj.entry, &device->port_list); kobject_uevent(&p->kobj, KOBJ_ADD); return 0; err_remove_pkey: sysfs_remove_group(&p->kobj, &p->pkey_group); err_free_pkey: for (i = 0; i < attr.pkey_tbl_len; ++i) kfree(p->pkey_group.attrs[i]); kfree(p->pkey_group.attrs); p->pkey_group.attrs = NULL; err_remove_gid_type: sysfs_remove_group(&p->gid_attr_group->kobj, &p->gid_attr_group->type); err_free_gid_type: for (i = 0; i < attr.gid_tbl_len; ++i) kfree(p->gid_attr_group->type.attrs[i]); kfree(p->gid_attr_group->type.attrs); p->gid_attr_group->type.attrs = NULL; err_remove_gid_ndev: sysfs_remove_group(&p->gid_attr_group->kobj, &p->gid_attr_group->ndev); err_free_gid_ndev: for (i = 0; i < attr.gid_tbl_len; ++i) kfree(p->gid_attr_group->ndev.attrs[i]); kfree(p->gid_attr_group->ndev.attrs); p->gid_attr_group->ndev.attrs = NULL; err_remove_gid: sysfs_remove_group(&p->kobj, &p->gid_group); err_free_gid: for (i = 0; i < attr.gid_tbl_len; ++i) kfree(p->gid_group.attrs[i]); kfree(p->gid_group.attrs); p->gid_group.attrs = NULL; err_remove_pma: sysfs_remove_group(&p->kobj, p->pma_table); err_put_gid_attrs: kobject_put(&p->gid_attr_group->kobj); err_put: kobject_put(&p->kobj); return ret; } static ssize_t node_type_show(struct device *device, struct device_attribute *attr, char *buf) { struct ib_device *dev = container_of(device, struct ib_device, dev); switch (dev->node_type) { case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); default: return sprintf(buf, "%d: \n", dev->node_type); } } static DEVICE_ATTR_RO(node_type); static ssize_t sys_image_guid_show(struct device *device, struct device_attribute *dev_attr, char *buf) { struct ib_device *dev = container_of(device, struct ib_device, dev); return sprintf(buf, "%04x:%04x:%04x:%04x\n", be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); } static DEVICE_ATTR_RO(sys_image_guid); static ssize_t node_guid_show(struct device *device, struct device_attribute *attr, char *buf) { struct ib_device *dev = container_of(device, struct ib_device, dev); return sprintf(buf, "%04x:%04x:%04x:%04x\n", be16_to_cpu(((__be16 *) &dev->node_guid)[0]), be16_to_cpu(((__be16 *) &dev->node_guid)[1]), be16_to_cpu(((__be16 *) &dev->node_guid)[2]), be16_to_cpu(((__be16 *) &dev->node_guid)[3])); } static DEVICE_ATTR_RO(node_guid); static ssize_t node_desc_show(struct device *device, struct device_attribute *attr, char *buf) { struct ib_device *dev = container_of(device, struct ib_device, dev); return sprintf(buf, "%.64s\n", dev->node_desc); } static ssize_t node_desc_store(struct device *device, struct device_attribute *attr, const char *buf, size_t count) { struct ib_device *dev = container_of(device, struct ib_device, dev); struct ib_device_modify desc = {}; int ret; if (!dev->modify_device) return -EIO; memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); if (ret) return ret; return count; } static DEVICE_ATTR_RW(node_desc); static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr, char *buf) { struct ib_device *dev = container_of(device, struct ib_device, dev); ib_get_device_fw_str(dev, buf); strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX); return strlen(buf); } static DEVICE_ATTR_RO(fw_ver); static struct attribute *ib_dev_attrs[] = { &dev_attr_node_type.attr, &dev_attr_node_guid.attr, &dev_attr_sys_image_guid.attr, &dev_attr_fw_ver.attr, &dev_attr_node_desc.attr, NULL, }; static const struct attribute_group dev_attr_group = { .attrs = ib_dev_attrs, }; static void free_port_list_attributes(struct ib_device *device) { struct kobject *p, *t; list_for_each_entry_safe(p, t, &device->port_list, entry) { struct ib_port *port = container_of(p, struct ib_port, kobj); list_del(&p->entry); if (port->hw_stats) { kfree(port->hw_stats); free_hsag(&port->kobj, port->hw_stats_ag); } sysfs_remove_group(p, port->pma_table); sysfs_remove_group(p, &port->pkey_group); sysfs_remove_group(p, &port->gid_group); sysfs_remove_group(&port->gid_attr_group->kobj, &port->gid_attr_group->ndev); sysfs_remove_group(&port->gid_attr_group->kobj, &port->gid_attr_group->type); kobject_put(&port->gid_attr_group->kobj); kobject_put(p); } kobject_put(device->ports_parent); } int ib_device_register_sysfs(struct ib_device *device, int (*port_callback)(struct ib_device *, u8, struct kobject *)) { struct device *class_dev = &device->dev; int ret; int i; ret = dev_set_name(class_dev, "%s", device->name); if (ret) return ret; device->groups[0] = &dev_attr_group; class_dev->groups = device->groups; ret = device_add(class_dev); if (ret) goto err; device->ports_parent = kobject_create_and_add("ports", &class_dev->kobj); if (!device->ports_parent) { ret = -ENOMEM; goto err_put; } if (rdma_cap_ib_switch(device)) { ret = add_port(device, 0, port_callback); if (ret) goto err_put; } else { for (i = 1; i <= device->phys_port_cnt; ++i) { ret = add_port(device, i, port_callback); if (ret) goto err_put; } } if (device->alloc_hw_stats) setup_hw_stats(device, NULL, 0); return 0; err_put: free_port_list_attributes(device); device_del(class_dev); err: return ret; } void ib_device_unregister_sysfs(struct ib_device *device) { /* Hold device until ib_dealloc_device() */ get_device(&device->dev); free_port_list_attributes(device); if (device->hw_stats) { kfree(device->hw_stats); free_hsag(&device->dev.kobj, device->hw_stats_ag); } device_unregister(&device->dev); }