/*
* 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>
#include <rdma/ib_cache.h>
#include <rdma/rdma_counter.h>
#include <rdma/ib_sysfs.h>
struct port_table_attribute {
struct ib_port_attribute attr;
char name[8];
int index;
__be16 attr_id;
};
struct gid_attr_group {
struct ib_port *port;
struct kobject kobj;
struct attribute_group groups[2];
const struct attribute_group *groups_list[3];
struct port_table_attribute attrs_list[];
};
struct ib_port {
struct kobject kobj;
struct ib_device *ibdev;
struct gid_attr_group *gid_attr_group;
struct hw_stats_port_data *hw_stats_data;
struct attribute_group groups[3];
const struct attribute_group *groups_list[5];
u32 port_num;
struct port_table_attribute attrs_list[];
};
struct hw_stats_device_attribute {
struct device_attribute attr;
ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num, char *buf);
ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num,
const char *buf, size_t count);
};
struct hw_stats_port_attribute {
struct ib_port_attribute attr;
ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num, char *buf);
ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num,
const char *buf, size_t count);
};
struct hw_stats_device_data {
struct attribute_group group;
struct rdma_hw_stats *stats;
struct hw_stats_device_attribute attrs[];
};
struct hw_stats_port_data {
struct rdma_hw_stats *stats;
struct hw_stats_port_attribute attrs[];
};
static ssize_t port_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct ib_port_attribute *port_attr =
container_of(attr, struct ib_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->ibdev, p->port_num, port_attr, buf);
}
static ssize_t port_attr_store(struct kobject *kobj,
struct attribute *attr,
const char *buf, size_t count)
{
struct ib_port_attribute *port_attr =
container_of(attr, struct ib_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->ibdev, p->port_num, port_attr, buf, count);
}
struct ib_device *ib_port_sysfs_get_ibdev_kobj(struct kobject *kobj,
u32 *port_num)
{
struct ib_port *port = container_of(kobj, struct ib_port, kobj);
*port_num = port->port_num;
return port->ibdev;
}
EXPORT_SYMBOL(ib_port_sysfs_get_ibdev_kobj);
static const struct sysfs_ops port_sysfs_ops = {
.show = port_attr_show,
.store = port_attr_store
};
static ssize_t hw_stat_device_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hw_stats_device_attribute *stat_attr =
container_of(attr, struct hw_stats_device_attribute, attr);
struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
return stat_attr->show(ibdev, ibdev->hw_stats_data->stats,
stat_attr - ibdev->hw_stats_data->attrs, 0, buf);
}
static ssize_t hw_stat_device_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct hw_stats_device_attribute *stat_attr =
container_of(attr, struct hw_stats_device_attribute, attr);
struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
return stat_attr->store(ibdev, ibdev->hw_stats_data->stats,
stat_attr - ibdev->hw_stats_data->attrs, 0, buf,
count);
}
static ssize_t hw_stat_port_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *attr, char *buf)
{
struct hw_stats_port_attribute *stat_attr =
container_of(attr, struct hw_stats_port_attribute, attr);
struct ib_port *port = ibdev->port_data[port_num].sysfs;
return stat_attr->show(ibdev, port->hw_stats_data->stats,
stat_attr - port->hw_stats_data->attrs,
port->port_num, buf);
}
static ssize_t hw_stat_port_store(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *attr,
const char *buf, size_t count)
{
struct hw_stats_port_attribute *stat_attr =
container_of(attr, struct hw_stats_port_attribute, attr);
struct ib_port *port = ibdev->port_data[port_num].sysfs;
return stat_attr->store(ibdev, port->hw_stats_data->stats,
stat_attr - port->hw_stats_data->attrs,
port->port_num, buf, count);
}
static ssize_t gid_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct ib_port_attribute *port_attr =
container_of(attr, struct ib_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->ibdev, p->port_num, port_attr, buf);
}
static const struct sysfs_ops gid_attr_sysfs_ops = {
.show = gid_attr_show
};
static ssize_t state_show(struct ib_device *ibdev, u32 port_num,
struct ib_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(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(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_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%x\n", attr.lid);
}
static ssize_t lid_mask_count_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "%u\n", attr.lmc);
}
static ssize_t sm_lid_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%x\n", attr.sm_lid);
}
static ssize_t sm_sl_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "%u\n", attr.sm_sl);
}
static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%08x\n", attr.port_cap_flags);
}
static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
struct ib_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(ibdev, 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_NDR:
speed = " NDR";
rate = 1000;
break;
case IB_SPEED_XDR:
speed = " XDR";
rate = 2000;
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 sysfs_emit(buf, "%d%s Gb/sec (%dX%s)\n", rate / 10,
rate % 10 ? ".5" : "",
ib_width_enum_to_int(attr.active_width), speed);
}
static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
{
static const char *phys_state_str[] = {
"<unknown>",
"Sleep",
"Polling",
"Disabled",
"PortConfigurationTraining",
"LinkUp",
"LinkErrorRecovery",
"Phy Test",
};
if (phys_state < ARRAY_SIZE(phys_state_str))
return phys_state_str[phys_state];
return "<unknown>";
}
static ssize_t phys_state_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "%u: %s\n", attr.phys_state,
phys_state_to_str(attr.phys_state));
}
static ssize_t link_layer_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
const char *output;
switch (rdma_port_get_link_layer(ibdev, port_num)) {
case IB_LINK_LAYER_INFINIBAND:
output = "InfiniBand";
break;
case IB_LINK_LAYER_ETHERNET:
output = "Ethernet";
break;
default:
output = "Unknown";
break;
}
return sysfs_emit(buf, "%s\n", output);
}
static IB_PORT_ATTR_RO(state);
static IB_PORT_ATTR_RO(lid);
static IB_PORT_ATTR_RO(lid_mask_count);
static IB_PORT_ATTR_RO(sm_lid);
static IB_PORT_ATTR_RO(sm_sl);
static IB_PORT_ATTR_RO(cap_mask);
static IB_PORT_ATTR_RO(rate);
static IB_PORT_ATTR_RO(phys_state);
static IB_PORT_ATTR_RO(link_layer);
static struct attribute *port_default_attrs[] = {
&ib_port_attr_state.attr,
&ib_port_attr_lid.attr,
&ib_port_attr_lid_mask_count.attr,
&ib_port_attr_sm_lid.attr,
&ib_port_attr_sm_sl.attr,
&ib_port_attr_cap_mask.attr,
&ib_port_attr_rate.attr,
&ib_port_attr_phys_state.attr,
&ib_port_attr_link_layer.attr,
NULL
};
ATTRIBUTE_GROUPS(port_default);
static ssize_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
{
struct net_device *ndev;
int ret = -EINVAL;
rcu_read_lock();
ndev = rcu_dereference(gid_attr->ndev);
if (ndev)
ret = sysfs_emit(buf, "%s\n", ndev->name);
rcu_read_unlock();
return ret;
}
static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
{
return sysfs_emit(buf, "%s\n",
ib_cache_gid_type_str(gid_attr->gid_type));
}
static ssize_t _show_port_gid_attr(
struct ib_device *ibdev, u32 port_num, struct ib_port_attribute *attr,
char *buf,
ssize_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(ibdev, port_num, tab_attr->index);
if (IS_ERR(gid_attr))
/* -EINVAL is returned for user space compatibility reasons. */
return -EINVAL;
ret = print(gid_attr, buf);
rdma_put_gid_attr(gid_attr);
return ret;
}
static ssize_t show_port_gid(struct ib_device *ibdev, u32 port_num,
struct ib_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;
int len;
gid_attr = rdma_get_gid_attr(ibdev, 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 sysfs_emit(buf, "%pI6\n", zgid.raw);
}
len = sysfs_emit(buf, "%pI6\n", gid_attr->gid.raw);
rdma_put_gid_attr(gid_attr);
return len;
}
static ssize_t show_port_gid_attr_ndev(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *attr,
char *buf)
{
return _show_port_gid_attr(ibdev, port_num, attr, buf, print_ndev);
}
static ssize_t show_port_gid_attr_gid_type(struct ib_device *ibdev,
u32 port_num,
struct ib_port_attribute *attr,
char *buf)
{
return _show_port_gid_attr(ibdev, port_num, attr, buf, print_gid_type);
}
static ssize_t show_port_pkey(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *attr, char *buf)
{
struct port_table_attribute *tab_attr =
container_of(attr, struct port_table_attribute, attr);
u16 pkey;
int ret;
ret = ib_query_pkey(ibdev, port_num, tab_attr->index, &pkey);
if (ret)
return ret;
return sysfs_emit(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->ops.process_mad)
return -ENOSYS;
in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
out_mad = kzalloc(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->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
in_mad, 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_device *ibdev, u32 port_num,
struct ib_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;
int ret;
u8 data[8];
int len;
ret = get_perf_mad(ibdev, port_num, tab_attr->attr_id, &data,
40 + offset / 8, sizeof(data));
if (ret < 0)
return ret;
switch (width) {
case 4:
len = sysfs_emit(buf, "%d\n",
(*data >> (4 - (offset % 8))) & 0xf);
break;
case 8:
len = sysfs_emit(buf, "%u\n", *data);
break;
case 16:
len = sysfs_emit(buf, "%u\n", be16_to_cpup((__be16 *)data));
break;
case 32:
len = sysfs_emit(buf, "%u\n", be32_to_cpup((__be32 *)data));
break;
case 64:
len = sysfs_emit(buf, "%llu\n", be64_to_cpup((__be64 *)data));
break;
default:
len = 0;
break;
}
return len;
}
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 const struct attribute_group pma_group = {
.name = "counters",
.attrs = pma_attrs
};
static const struct attribute_group pma_group_ext = {
.name = "counters",
.attrs = pma_attrs_ext
};
static const struct attribute_group pma_group_noietf = {
.name = "counters",
.attrs = pma_attrs_noietf
};
static void ib_port_release(struct kobject *kobj)
{
struct ib_port *port = container_of(kobj, struct ib_port, kobj);
int i;
for (i = 0; i != ARRAY_SIZE(port->groups); i++)
kfree(port->groups[i].attrs);
if (port->hw_stats_data)
rdma_free_hw_stats_struct(port->hw_stats_data->stats);
kfree(port->hw_stats_data);
kvfree(port);
}
static void ib_port_gid_attr_release(struct kobject *kobj)
{
struct gid_attr_group *gid_attr_group =
container_of(kobj, struct gid_attr_group, kobj);
int i;
for (i = 0; i != ARRAY_SIZE(gid_attr_group->groups); i++)
kfree(gid_attr_group->groups[i].attrs);
kfree(gid_attr_group);
}
static struct kobj_type port_type = {
.release = ib_port_release,
.sysfs_ops = &port_sysfs_ops,
.default_groups = port_default_groups,
};
static struct kobj_type gid_attr_type = {
.sysfs_ops = &gid_attr_sysfs_ops,
.release = ib_port_gid_attr_release
};
/*
* Figure out which counter table to use depending on
* the device capabilities.
*/
static const 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,
u32 port_num, int index)
{
int ret;
if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
return 0;
ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
if (ret < 0)
return ret;
if (ret == stats->num_counters)
stats->timestamp = jiffies;
return 0;
}
static int print_hw_stat(struct ib_device *dev, int port_num,
struct rdma_hw_stats *stats, int index, char *buf)
{
u64 v = rdma_counter_get_hwstat_value(dev, port_num, index);
return sysfs_emit(buf, "%llu\n", stats->value[index] + v);
}
static ssize_t show_hw_stats(struct ib_device *ibdev,
struct rdma_hw_stats *stats, unsigned int index,
unsigned int port_num, char *buf)
{
int ret;
mutex_lock(&stats->lock);
ret = update_hw_stats(ibdev, stats, port_num, index);
if (ret)
goto unlock;
ret = print_hw_stat(ibdev, port_num, stats, index, buf);
unlock:
mutex_unlock(&stats->lock);
return ret;
}
static ssize_t show_stats_lifespan(struct ib_device *ibdev,
struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num,
char *buf)
{
int msecs;
mutex_lock(&stats->lock);
msecs = jiffies_to_msecs(stats->lifespan);
mutex_unlock(&stats->lock);
return sysfs_emit(buf, "%d\n", msecs);
}
static ssize_t set_stats_lifespan(struct ib_device *ibdev,
struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num,
const char *buf, size_t count)
{
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);
mutex_lock(&stats->lock);
stats->lifespan = jiffies;
mutex_unlock(&stats->lock);
return count;
}
static struct hw_stats_device_data *
alloc_hw_stats_device(struct ib_device *ibdev)
{
struct hw_stats_device_data *data;
struct rdma_hw_stats *stats;
if (!ibdev->ops.alloc_hw_device_stats)
return ERR_PTR(-EOPNOTSUPP);
stats = ibdev->ops.alloc_hw_device_stats(ibdev);
if (!stats)
return ERR_PTR(-ENOMEM);
if (!stats->descs || 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
*/
data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
GFP_KERNEL);
if (!data)
goto err_free_stats;
data->group.attrs = kcalloc(stats->num_counters + 2,
sizeof(*data->group.attrs), GFP_KERNEL);
if (!data->group.attrs)
goto err_free_data;
data->group.name = "hw_counters";
data->stats = stats;
return data;
err_free_data:
kfree(data);
err_free_stats:
rdma_free_hw_stats_struct(stats);
return ERR_PTR(-ENOMEM);
}
void ib_device_release_hw_stats(struct hw_stats_device_data *data)
{
kfree(data->group.attrs);
rdma_free_hw_stats_struct(data->stats);
kfree(data);
}
int ib_setup_device_attrs(struct ib_device *ibdev)
{
struct hw_stats_device_attribute *attr;
struct hw_stats_device_data *data;
bool opstat_skipped = false;
int i, ret, pos = 0;
data = alloc_hw_stats_device(ibdev);
if (IS_ERR(data)) {
if (PTR_ERR(data) == -EOPNOTSUPP)
return 0;
return PTR_ERR(data);
}
ibdev->hw_stats_data = data;
ret = ibdev->ops.get_hw_stats(ibdev, data->stats, 0,
data->stats->num_counters);
if (ret != data->stats->num_counters) {
if (WARN_ON(ret >= 0))
return -EINVAL;
return ret;
}
data->stats->timestamp = jiffies;
for (i = 0; i < data->stats->num_counters; i++) {
if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
opstat_skipped = true;
continue;
}
WARN_ON(opstat_skipped);
attr = &data->attrs[pos];
sysfs_attr_init(&attr->attr.attr);
attr->attr.attr.name = data->stats->descs[i].name;
attr->attr.attr.mode = 0444;
attr->attr.show = hw_stat_device_show;
attr->show = show_hw_stats;
data->group.attrs[pos] = &attr->attr.attr;
pos++;
}
attr = &data->attrs[pos];
sysfs_attr_init(&attr->attr.attr);
attr->attr.attr.name = "lifespan";
attr->attr.attr.mode = 0644;
attr->attr.show = hw_stat_device_show;
attr->show = show_stats_lifespan;
attr->attr.store = hw_stat_device_store;
attr->store = set_stats_lifespan;
data->group.attrs[pos] = &attr->attr.attr;
for (i = 0; i != ARRAY_SIZE(ibdev->groups); i++)
if (!ibdev->groups[i]) {
ibdev->groups[i] = &data->group;
return 0;
}
WARN(true, "struct ib_device->groups is too small");
return -EINVAL;
}
static struct hw_stats_port_data *
alloc_hw_stats_port(struct ib_port *port, struct attribute_group *group)
{
struct ib_device *ibdev = port->ibdev;
struct hw_stats_port_data *data;
struct rdma_hw_stats *stats;
if (!ibdev->ops.alloc_hw_port_stats)
return ERR_PTR(-EOPNOTSUPP);
stats = ibdev->ops.alloc_hw_port_stats(port->ibdev, port->port_num);
if (!stats)
return ERR_PTR(-ENOMEM);
if (!stats->descs || 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
*/
data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
GFP_KERNEL);
if (!data)
goto err_free_stats;
group->attrs = kcalloc(stats->num_counters + 2,
sizeof(*group->attrs), GFP_KERNEL);
if (!group->attrs)
goto err_free_data;
group->name = "hw_counters";
data->stats = stats;
return data;
err_free_data:
kfree(data);
err_free_stats:
rdma_free_hw_stats_struct(stats);
return ERR_PTR(-ENOMEM);
}
static int setup_hw_port_stats(struct ib_port *port,
struct attribute_group *group)
{
struct hw_stats_port_attribute *attr;
struct hw_stats_port_data *data;
bool opstat_skipped = false;
int i, ret, pos = 0;
data = alloc_hw_stats_port(port, group);
if (IS_ERR(data))
return PTR_ERR(data);
ret = port->ibdev->ops.get_hw_stats(port->ibdev, data->stats,
port->port_num,
data->stats->num_counters);
if (ret != data->stats->num_counters) {
if (WARN_ON(ret >= 0))
return -EINVAL;
return ret;
}
data->stats->timestamp = jiffies;
for (i = 0; i < data->stats->num_counters; i++) {
if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
opstat_skipped = true;
continue;
}
WARN_ON(opstat_skipped);
attr = &data->attrs[pos];
sysfs_attr_init(&attr->attr.attr);
attr->attr.attr.name = data->stats->descs[i].name;
attr->attr.attr.mode = 0444;
attr->attr.show = hw_stat_port_show;
attr->show = show_hw_stats;
group->attrs[pos] = &attr->attr.attr;
pos++;
}
attr = &data->attrs[pos];
sysfs_attr_init(&attr->attr.attr);
attr->attr.attr.name = "lifespan";
attr->attr.attr.mode = 0644;
attr->attr.show = hw_stat_port_show;
attr->show = show_stats_lifespan;
attr->attr.store = hw_stat_port_store;
attr->store = set_stats_lifespan;
group->attrs[pos] = &attr->attr.attr;
port->hw_stats_data = data;
return 0;
}
struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
u32 port_num)
{
if (!ibdev->port_data || !rdma_is_port_valid(ibdev, port_num) ||
!ibdev->port_data[port_num].sysfs->hw_stats_data)
return NULL;
return ibdev->port_data[port_num].sysfs->hw_stats_data->stats;
}
static int
alloc_port_table_group(const char *name, struct attribute_group *group,
struct port_table_attribute *attrs, size_t num,
ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *, char *buf))
{
struct attribute **attr_list;
int i;
attr_list = kcalloc(num + 1, sizeof(*attr_list), GFP_KERNEL);
if (!attr_list)
return -ENOMEM;
for (i = 0; i < num; i++) {
struct port_table_attribute *element = &attrs[i];
if (snprintf(element->name, sizeof(element->name), "%d", i) >=
sizeof(element->name))
goto err;
sysfs_attr_init(&element->attr.attr);
element->attr.attr.name = element->name;
element->attr.attr.mode = 0444;
element->attr.show = show;
element->index = i;
attr_list[i] = &element->attr.attr;
}
group->name = name;
group->attrs = attr_list;
return 0;
err:
kfree(attr_list);
return -EINVAL;
}
/*
* Create the sysfs:
* ibp0s9/ports/XX/gid_attrs/{ndevs,types}/YYY
* YYY is the gid table index in decimal
*/
static int setup_gid_attrs(struct ib_port *port,
const struct ib_port_attr *attr)
{
struct gid_attr_group *gid_attr_group;
int ret;
gid_attr_group = kzalloc(struct_size(gid_attr_group, attrs_list,
size_mul(attr->gid_tbl_len, 2)),
GFP_KERNEL);
if (!gid_attr_group)
return -ENOMEM;
gid_attr_group->port = port;
kobject_init(&gid_attr_group->kobj, &gid_attr_type);
ret = alloc_port_table_group("ndevs", &gid_attr_group->groups[0],
gid_attr_group->attrs_list,
attr->gid_tbl_len,
show_port_gid_attr_ndev);
if (ret)
goto err_put;
gid_attr_group->groups_list[0] = &gid_attr_group->groups[0];
ret = alloc_port_table_group(
"types", &gid_attr_group->groups[1],
gid_attr_group->attrs_list + attr->gid_tbl_len,
attr->gid_tbl_len, show_port_gid_attr_gid_type);
if (ret)
goto err_put;
gid_attr_group->groups_list[1] = &gid_attr_group->groups[1];
ret = kobject_add(&gid_attr_group->kobj, &port->kobj, "gid_attrs");
if (ret)
goto err_put;
ret = sysfs_create_groups(&gid_attr_group->kobj,
gid_attr_group->groups_list);
if (ret)
goto err_del;
port->gid_attr_group = gid_attr_group;
return 0;
err_del:
kobject_del(&gid_attr_group->kobj);
err_put:
kobject_put(&gid_attr_group->kobj);
return ret;
}
static void destroy_gid_attrs(struct ib_port *port)
{
struct gid_attr_group *gid_attr_group = port->gid_attr_group;
if (!gid_attr_group)
return;
sysfs_remove_groups(&gid_attr_group->kobj, gid_attr_group->groups_list);
kobject_del(&gid_attr_group->kobj);
kobject_put(&gid_attr_group->kobj);
}
/*
* Create the sysfs:
* ibp0s9/ports/XX/{gids,pkeys,counters}/YYY
*/
static struct ib_port *setup_port(struct ib_core_device *coredev, int port_num,
const struct ib_port_attr *attr)
{
struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
bool is_full_dev = &device->coredev == coredev;
const struct attribute_group **cur_group;
struct ib_port *p;
int ret;
p = kvzalloc(struct_size(p, attrs_list,
size_add(attr->gid_tbl_len, attr->pkey_tbl_len)),
GFP_KERNEL);
if (!p)
return ERR_PTR(-ENOMEM);
p->ibdev = device;
p->port_num = port_num;
kobject_init(&p->kobj, &port_type);
if (device->port_data && is_full_dev)
device->port_data[port_num].sysfs = p;
cur_group = p->groups_list;
ret = alloc_port_table_group("gids", &p->groups[0], p->attrs_list,
attr->gid_tbl_len, show_port_gid);
if (ret)
goto err_put;
*cur_group++ = &p->groups[0];
if (attr->pkey_tbl_len) {
ret = alloc_port_table_group("pkeys", &p->groups[1],
p->attrs_list + attr->gid_tbl_len,
attr->pkey_tbl_len, show_port_pkey);
if (ret)
goto err_put;
*cur_group++ = &p->groups[1];
}
/*
* If port == 0, it means hw_counters are per device and not per
* port, so holder should be device. Therefore skip per port
* counter initialization.
*/
if (port_num && is_full_dev) {
ret = setup_hw_port_stats(p, &p->groups[2]);
if (ret && ret != -EOPNOTSUPP)
goto err_put;
if (!ret)
*cur_group++ = &p->groups[2];
}
if (device->ops.process_mad && is_full_dev)
*cur_group++ = get_counter_table(device, port_num);
ret = kobject_add(&p->kobj, coredev->ports_kobj, "%d", port_num);
if (ret)
goto err_put;
ret = sysfs_create_groups(&p->kobj, p->groups_list);
if (ret)
goto err_del;
if (is_full_dev) {
ret = sysfs_create_groups(&p->kobj, device->ops.port_groups);
if (ret)
goto err_groups;
}
list_add_tail(&p->kobj.entry, &coredev->port_list);
return p;
err_groups:
sysfs_remove_groups(&p->kobj, p->groups_list);
err_del:
kobject_del(&p->kobj);
err_put:
if (device->port_data && is_full_dev)
device->port_data[port_num].sysfs = NULL;
kobject_put(&p->kobj);
return ERR_PTR(ret);
}
static void destroy_port(struct ib_core_device *coredev, struct ib_port *port)
{
bool is_full_dev = &port->ibdev->coredev == coredev;
list_del(&port->kobj.entry);
if (is_full_dev)
sysfs_remove_groups(&port->kobj, port->ibdev->ops.port_groups);
sysfs_remove_groups(&port->kobj, port->groups_list);
kobject_del(&port->kobj);
if (port->ibdev->port_data &&
port->ibdev->port_data[port->port_num].sysfs == port)
port->ibdev->port_data[port->port_num].sysfs = NULL;
kobject_put(&port->kobj);
}
static const char *node_type_string(int node_type)
{
switch (node_type) {
case RDMA_NODE_IB_CA:
return "CA";
case RDMA_NODE_IB_SWITCH:
return "switch";
case RDMA_NODE_IB_ROUTER:
return "router";
case RDMA_NODE_RNIC:
return "RNIC";
case RDMA_NODE_USNIC:
return "usNIC";
case RDMA_NODE_USNIC_UDP:
return "usNIC UDP";
case RDMA_NODE_UNSPECIFIED:
return "unspecified";
}
return "<unknown>";
}
static ssize_t node_type_show(struct device *device,
struct device_attribute *attr, char *buf)
{
struct ib_device *dev = rdma_device_to_ibdev(device);
return sysfs_emit(buf, "%u: %s\n", dev->node_type,
node_type_string(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 = rdma_device_to_ibdev(device);
__be16 *guid = (__be16 *)&dev->attrs.sys_image_guid;
return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
be16_to_cpu(guid[0]),
be16_to_cpu(guid[1]),
be16_to_cpu(guid[2]),
be16_to_cpu(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 = rdma_device_to_ibdev(device);
__be16 *node_guid = (__be16 *)&dev->node_guid;
return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
be16_to_cpu(node_guid[0]),
be16_to_cpu(node_guid[1]),
be16_to_cpu(node_guid[2]),
be16_to_cpu(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 = rdma_device_to_ibdev(device);
return sysfs_emit(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 = rdma_device_to_ibdev(device);
struct ib_device_modify desc = {};
int ret;
if (!dev->ops.modify_device)
return -EOPNOTSUPP;
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 = rdma_device_to_ibdev(device);
char version[IB_FW_VERSION_NAME_MAX] = {};
ib_get_device_fw_str(dev, version);
return sysfs_emit(buf, "%s\n", version);
}
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,
};
const struct attribute_group ib_dev_attr_group = {
.attrs = ib_dev_attrs,
};
void ib_free_port_attrs(struct ib_core_device *coredev)
{
struct kobject *p, *t;
list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
struct ib_port *port = container_of(p, struct ib_port, kobj);
destroy_gid_attrs(port);
destroy_port(coredev, port);
}
kobject_put(coredev->ports_kobj);
}
int ib_setup_port_attrs(struct ib_core_device *coredev)
{
struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
u32 port_num;
int ret;
coredev->ports_kobj = kobject_create_and_add("ports",
&coredev->dev.kobj);
if (!coredev->ports_kobj)
return -ENOMEM;
rdma_for_each_port (device, port_num) {
struct ib_port_attr attr;
struct ib_port *port;
ret = ib_query_port(device, port_num, &attr);
if (ret)
goto err_put;
port = setup_port(coredev, port_num, &attr);
if (IS_ERR(port)) {
ret = PTR_ERR(port);
goto err_put;
}
ret = setup_gid_attrs(port, &attr);
if (ret)
goto err_put;
}
return 0;
err_put:
ib_free_port_attrs(coredev);
return ret;
}
/**
* ib_port_register_client_groups - Add an ib_client's attributes to the port
*
* @ibdev: IB device to add counters
* @port_num: valid port number
* @groups: Group list of attributes
*
* Do not use. Only for legacy sysfs compatibility.
*/
int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
const struct attribute_group **groups)
{
return sysfs_create_groups(&ibdev->port_data[port_num].sysfs->kobj,
groups);
}
EXPORT_SYMBOL(ib_port_register_client_groups);
void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
const struct attribute_group **groups)
{
return sysfs_remove_groups(&ibdev->port_data[port_num].sysfs->kobj,
groups);
}
EXPORT_SYMBOL(ib_port_unregister_client_groups);
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