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- /*
- * 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>
- 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;
- const 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 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_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: %s\n", attr.phys_state,
- phys_state_to_str(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)
- {
- struct net_device *ndev;
- size_t ret = -EINVAL;
- rcu_read_lock();
- ndev = rcu_dereference(gid_attr->ndev);
- if (ndev)
- ret = sprintf(buf, "%s\n", ndev->name);
- rcu_read_unlock();
- return ret;
- }
- 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))
- /* -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_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->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_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 ret;
- 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 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 *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) {
- if (p->pkey_group->attrs) {
- for (i = 0; (a = p->pkey_group->attrs[i]); ++i)
- kfree(a);
- kfree(p->pkey_group->attrs);
- }
- kfree(p->pkey_group);
- p->pkey_group = NULL;
- }
- 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 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,
- u8 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 ssize_t 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 sprintf(buf, "%llu\n", stats->value[index] + v);
- }
- 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(dev, hsa->port_num, 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->ops.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->ops.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;
- if (device->port_data)
- device->port_data[port_num].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_core_device *coredev, int port_num)
- {
- struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
- bool is_full_dev = &device->coredev == coredev;
- 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,
- coredev->ports_kobj,
- "%d", port_num);
- if (ret) {
- goto err_put;
- }
- 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) {
- goto err_put_gid_attrs;
- }
- if (device->ops.process_mad && is_full_dev) {
- 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;
- if (attr.pkey_tbl_len) {
- p->pkey_group = kzalloc(sizeof(*p->pkey_group), GFP_KERNEL);
- if (!p->pkey_group) {
- ret = -ENOMEM;
- goto err_remove_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_free_pkey_group;
- }
- ret = sysfs_create_group(&p->kobj, p->pkey_group);
- if (ret)
- goto err_free_pkey;
- }
- if (device->ops.init_port && is_full_dev) {
- ret = device->ops.init_port(device, port_num, &p->kobj);
- if (ret)
- goto err_remove_pkey;
- }
- /*
- * If port == 0, it means hw_counters are per device and not per
- * port, so holder should be device. Therefore skip per port conunter
- * initialization.
- */
- if (device->ops.alloc_hw_stats && port_num && is_full_dev)
- setup_hw_stats(device, p, port_num);
- list_add_tail(&p->kobj.entry, &coredev->port_list);
- kobject_uevent(&p->kobj, KOBJ_ADD);
- return 0;
- err_remove_pkey:
- if (p->pkey_group)
- sysfs_remove_group(&p->kobj, p->pkey_group);
- err_free_pkey:
- if (p->pkey_group) {
- 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_free_pkey_group:
- kfree(p->pkey_group);
- 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:
- if (p->pma_table)
- 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 = rdma_device_to_ibdev(device);
- 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_UNSPECIFIED: return sprintf(buf, "%d: unspecified\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);
- }
- }
- 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);
- 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 = rdma_device_to_ibdev(device);
- 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 = rdma_device_to_ibdev(device);
- 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 = 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);
- 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,
- };
- const struct attribute_group ib_dev_attr_group = {
- .attrs = ib_dev_attrs,
- };
- void ib_free_port_attrs(struct ib_core_device *coredev)
- {
- struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
- bool is_full_dev = &device->coredev == 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);
- list_del(&p->entry);
- if (port->hw_stats_ag)
- free_hsag(&port->kobj, port->hw_stats_ag);
- kfree(port->hw_stats);
- if (device->port_data && is_full_dev)
- device->port_data[port->port_num].hw_stats = NULL;
- if (port->pma_table)
- sysfs_remove_group(p, port->pma_table);
- if (port->pkey_group)
- 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(coredev->ports_kobj);
- }
- int ib_setup_port_attrs(struct ib_core_device *coredev)
- {
- struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
- unsigned int port;
- 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) {
- ret = add_port(coredev, port);
- if (ret)
- goto err_put;
- }
- return 0;
- err_put:
- ib_free_port_attrs(coredev);
- return ret;
- }
- int ib_device_register_sysfs(struct ib_device *device)
- {
- int ret;
- ret = ib_setup_port_attrs(&device->coredev);
- if (ret)
- return ret;
- if (device->ops.alloc_hw_stats)
- setup_hw_stats(device, NULL, 0);
- return 0;
- }
- void ib_device_unregister_sysfs(struct ib_device *device)
- {
- if (device->hw_stats_ag)
- free_hsag(&device->dev.kobj, device->hw_stats_ag);
- kfree(device->hw_stats);
- ib_free_port_attrs(&device->coredev);
- }
- /**
- * ib_port_register_module_stat - add module counters under relevant port
- * of IB device.
- *
- * @device: IB device to add counters
- * @port_num: valid port number
- * @kobj: pointer to the kobject to initialize
- * @ktype: pointer to the ktype for this kobject.
- * @name: the name of the kobject
- */
- int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
- struct kobject *kobj, struct kobj_type *ktype,
- const char *name)
- {
- struct kobject *p, *t;
- int ret;
- list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
- struct ib_port *port = container_of(p, struct ib_port, kobj);
- if (port->port_num != port_num)
- continue;
- ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
- name);
- if (ret) {
- kobject_put(kobj);
- return ret;
- }
- }
- return 0;
- }
- EXPORT_SYMBOL(ib_port_register_module_stat);
- /**
- * ib_port_unregister_module_stat - release module counters
- * @kobj: pointer to the kobject to release
- */
- void ib_port_unregister_module_stat(struct kobject *kobj)
- {
- kobject_put(kobj);
- }
- EXPORT_SYMBOL(ib_port_unregister_module_stat);
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