cregit-Linux how code gets into the kernel

Release 4.11 drivers/infiniband/core/sysfs.c

/*
 * 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 <linux/slab.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>

#include <rdma/ib_mad.h>
#include <rdma/ib_pma.h>

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); }

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static const struct sysfs_ops port_sysfs_ops = { .show = port_attr_show };
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); }

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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"); }

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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); }

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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); }

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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); }

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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); }

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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); }

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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_SDR: default: /* default to SDR for invalid rates */ 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); }

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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: <unknown>\n", attr.phys_state); } }

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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"); } }

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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(struct ib_gid_attr *gid_attr, char *buf) { if (!gid_attr->ndev) return -EINVAL; return sprintf(buf, "%s\n", gid_attr->ndev->name); }

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static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) { return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); }

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static ssize_t _show_port_gid_attr(struct ib_port *p, struct port_attribute *attr, char *buf, size_t (*print)(struct ib_gid_attr *gid_attr, char *buf)) { struct port_table_attribute *tab_attr = container_of(attr, struct port_table_attribute, attr); union ib_gid gid; struct ib_gid_attr gid_attr = {}; ssize_t ret; ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, &gid_attr); if (ret) goto err; ret = print(&gid_attr, buf); err: if (gid_attr.ndev) dev_put(gid_attr.ndev); return ret; }

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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); union ib_gid gid; ssize_t ret; ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); if (ret) return ret; return sprintf(buf, "%pI6\n", gid.raw); }

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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); }

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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); }

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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); }

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#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; }

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Dotan Barak10.39%112.50%
Total257100.00%8100.00%


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; }

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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); }

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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); }

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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; }

Contributors

PersonTokensPropCommitsCommitProp
Roland Dreier15667.83%240.00%
Dmitry Torokhov6327.39%120.00%
Greg Kroah-Hartman104.35%120.00%
Pekka J Enberg10.43%120.00%
Total230100.00%5100.00%

/* * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter7092.11%133.33%
Hal Rosenstock45.26%133.33%
Eran Ben Elisha22.63%133.33%
Total76100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter3643.90%125.00%
Matan Barak2226.83%125.00%
Roland Dreier1821.95%125.00%
Ralph Campbell67.32%125.00%
Total82100.00%4100.00%


static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) { return sprintf(buf, "%llu\n", stats->value[index]); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter3296.97%150.00%
Matan Barak13.03%150.00%
Total33100.00%2100.00%


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; } ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); if (ret) return ret; return print_hw_stat(stats, hsa->index, buf); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter11073.33%240.00%
Matan Barak2617.33%120.00%
Roland Dreier117.33%120.00%
Greg Kroah-Hartman32.00%120.00%
Total150100.00%5100.00%


static ssize_t show_stats_lifespan(struct kobject *kobj, struct attribute *attr, char *buf) { struct hw_stats_attribute *hsa; 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); msecs = jiffies_to_msecs(dev->hw_stats->lifespan); } else { struct ib_port *p = container_of(kobj, struct ib_port, kobj); msecs = jiffies_to_msecs(p->hw_stats->lifespan); } return sprintf(buf, "%d\n", msecs); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter9277.31%120.00%
Matan Barak1310.92%120.00%
Roland Dreier108.40%120.00%
Haggai Eran21.68%120.00%
Dmitry Torokhov21.68%120.00%
Total119100.00%5100.00%


static ssize_t set_stats_lifespan(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { struct hw_stats_attribute *hsa; 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); dev->hw_stats->lifespan = jiffies; } else { struct ib_port *p = container_of(kobj, struct ib_port, kobj); p->hw_stats->lifespan = jiffies; } return count; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter11775.00%120.00%
Roland Dreier2717.31%120.00%
Wei Yongjun63.85%120.00%
Dmitry Torokhov53.21%120.00%
Ralph Campbell10.64%120.00%
Total156100.00%5100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter3259.26%133.33%
Roland Dreier1629.63%133.33%
Ralph Campbell611.11%133.33%
Total54100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter7477.89%133.33%
Matan Barak2021.05%133.33%
Haggai Eran11.05%133.33%
Total95100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter6573.03%240.00%
Matan Barak1011.24%120.00%
Roland Dreier910.11%120.00%
Haggai Eran55.62%120.00%
Total89100.00%5100.00%


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]); } /* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter28374.67%19.09%
Roland Dreier348.97%218.18%
Mark Bloch297.65%19.09%
Colin Ian King112.90%19.09%
Upinder Malhi71.85%218.18%
Tony Jones71.85%19.09%
Doug Ledford51.32%218.18%
Tom Tucker30.79%19.09%
Total379100.00%11100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter85695.54%120.00%
Roland Dreier313.46%120.00%
Sean Hefty40.45%120.00%
Or Gerlitz40.45%120.00%
Tony Jones10.11%120.00%
Total896100.00%5100.00%


static ssize_t show_node_type(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: <unknown>\n", dev->node_type); } }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter10269.86%133.33%
Roland Dreier3523.97%133.33%
Tony Jones96.16%133.33%
Total146100.00%3100.00%


static ssize_t show_sys_image_guid(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])); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter7663.87%120.00%
Roland Dreier3529.41%360.00%
Tony Jones86.72%120.00%
Total119100.00%5100.00%


static ssize_t show_node_guid(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])); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter5751.35%150.00%
Steve Wise5448.65%150.00%
Total111100.00%2100.00%


static ssize_t show_node_desc(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); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter4391.49%150.00%
Steve Wise48.51%150.00%
Total47100.00%2100.00%


static ssize_t set_node_desc(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; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter8989.90%133.33%
Steve Wise99.09%133.33%
Yuval Shaia11.01%133.33%
Total99100.00%3100.00%


static ssize_t show_fw_ver(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, PAGE_SIZE); strlcat(buf, "\n", PAGE_SIZE); return strlen(buf); }

Contributors

PersonTokensPropCommitsCommitProp
Ira Weiny59100.00%1100.00%
Total59100.00%1100.00%

static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); static struct device_attribute *ib_class_attributes[] = { &dev_attr_node_type, &dev_attr_sys_image_guid, &dev_attr_node_guid, &dev_attr_node_desc, &dev_attr_fw_ver, };
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); }

Contributors

PersonTokensPropCommitsCommitProp
Haggai Eran9255.42%125.00%
Matan Barak4426.51%125.00%
Christoph Lameter3018.07%250.00%
Total166100.00%4100.00%


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; WARN_ON_ONCE(!device->dev.parent); ret = dev_set_name(class_dev, "%s", device->name); if (ret) return ret; ret = device_add(class_dev); if (ret) goto err; for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { ret = device_create_file(class_dev, ib_class_attributes[i]); if (ret) goto err_unregister; } 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); err_unregister: device_unregister(class_dev); err: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Roland Dreier17869.26%17.14%
Ralph Campbell218.17%17.14%
Jason Gunthorpe135.06%17.14%
Steve Wise93.50%17.14%
Li Zefan72.72%17.14%
Christoph Lameter62.33%17.14%
Tony Jones51.95%17.14%
Greg Kroah-Hartman51.95%17.14%
Bart Van Assche41.56%17.14%
Hal Rosenstock31.17%17.14%
Haggai Eran20.78%17.14%
Kees Cook20.78%17.14%
Kay Sievers10.39%17.14%
Joachim Fenkes10.39%17.14%
Total257100.00%14100.00%


void ib_device_unregister_sysfs(struct ib_device *device) { int i; /* Hold kobject until ib_dealloc_device() */ kobject_get(&device->dev.kobj); free_port_list_attributes(device); if (device->hw_stats) { kfree(device->hw_stats); free_hsag(&device->dev.kobj, device->hw_stats_ag); } for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) device_remove_file(&device->dev, ib_class_attributes[i]); device_unregister(&device->dev); }

Contributors

PersonTokensPropCommitsCommitProp
Roland Dreier3941.05%240.00%
Haggai Eran2829.47%120.00%
Christoph Lameter2627.37%120.00%
Tony Jones22.11%120.00%
Total95100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter294942.61%58.33%
Roland Dreier249636.06%1118.33%
Matan Barak6849.88%23.33%
Haggai Eran1502.17%23.33%
Ira Weiny1131.63%35.00%
Steve Wise1021.47%11.67%
Dmitry Torokhov921.33%23.33%
Eli Cohen831.20%11.67%
Ralph Campbell390.56%23.33%
Tony Jones320.46%11.67%
Marcel Apfelbaum310.45%11.67%
Mark Bloch290.42%11.67%
Greg Kroah-Hartman180.26%23.33%
Jason Gunthorpe130.19%11.67%
Hal Rosenstock130.19%23.33%
Colin Ian King110.16%11.67%
Or Gerlitz90.13%23.33%
Upinder Malhi70.10%23.33%
Li Zefan70.10%11.67%
Tim Schmielau60.09%11.67%
Wei Yongjun60.09%11.67%
Sean Hefty60.09%23.33%
Doug Ledford50.07%23.33%
Bart Van Assche40.06%11.67%
Tom Tucker30.04%11.67%
Paul Gortmaker30.04%11.67%
Eran Ben Elisha20.03%11.67%
Kees Cook20.03%11.67%
Joachim Fenkes10.01%11.67%
Pekka J Enberg10.01%11.67%
Dotan Barak10.01%11.67%
Yuval Shaia10.01%11.67%
Kay Sievers10.01%11.67%
Emese Revfy10.01%11.67%
Total6921100.00%60100.00%
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