--- /dev/null
+/*
+ * 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 <rdma/ib_mad.h>
+
+struct ib_port {
+ struct kobject kobj;
+ struct ib_device *ibdev;
+ struct attribute_group gid_group;
+ struct attribute_group pkey_group;
+ 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;
+};
+
+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 const struct sysfs_ops port_sysfs_ops = {
+ .show = port_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_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);
+}
+
+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);
+ }
+}
+
+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 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);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%pI6\n", gid.raw);
+}
+
+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) \
+}
+
+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;
+ struct ib_mad *in_mad = NULL;
+ struct ib_mad *out_mad = NULL;
+ ssize_t ret;
+
+ if (!p->ibdev->process_mad)
+ return sprintf(buf, "N/A (no PMA)\n");
+
+ 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 = cpu_to_be16(0x12); /* PortCounters */
+
+ in_mad->data[41] = p->port_num; /* PortSelect field */
+
+ if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
+ p->port_num, NULL, NULL, in_mad, out_mad) &
+ (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
+ (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ switch (width) {
+ case 4:
+ ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
+ (4 - (offset % 8))) & 0xf);
+ break;
+ case 8:
+ ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
+ break;
+ case 16:
+ ret = sprintf(buf, "%u\n",
+ be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
+ break;
+ case 32:
+ ret = sprintf(buf, "%u\n",
+ be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
+ break;
+ default:
+ ret = 0;
+ }
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+
+ 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 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,
+ NULL
+};
+
+static struct attribute_group pma_group = {
+ .name = "counters",
+ .attrs = pma_attrs
+};
+
+static void ib_port_release(struct kobject *kobj)
+{
+ struct ib_port *p = container_of(kobj, struct ib_port, kobj);
+ struct attribute *a;
+ int i;
+
+ if (p->gid_group.attrs) {
+ for (i = 0; (a = p->gid_group.attrs[i]); ++i)
+ kfree(a);
+
+ kfree(p->gid_group.attrs);
+ }
+
+ if (p->pkey_group.attrs) {
+ for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
+ kfree(a);
+
+ kfree(p->pkey_group.attrs);
+ }
+
+ kfree(p);
+}
+
+static struct kobj_type port_type = {
+ .release = ib_port_release,
+ .sysfs_ops = &port_sysfs_ops,
+ .default_attrs = port_default_attrs
+};
+
+static void ib_device_release(struct device *device)
+{
+ struct ib_device *dev = container_of(device, struct ib_device, dev);
+
+ kfree(dev);
+}
+
+static int ib_device_uevent(struct device *device,
+ struct kobj_uevent_env *env)
+{
+ struct ib_device *dev = container_of(device, struct ib_device, dev);
+
+ if (add_uevent_var(env, "NAME=%s", dev->name))
+ return -ENOMEM;
+
+ /*
+ * It would be nice to pass the node GUID with the event...
+ */
+
+ return 0;
+}
+
+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;
+}
+
+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;
+ }
+
+ ret = sysfs_create_group(&p->kobj, &pma_group);
+ if (ret)
+ goto err_put;
+
+ 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->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;
+ }
+
+ 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;
+ }
+
+ 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:
+ 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, &pma_group);
+
+err_put:
+ kobject_put(&p->kobj);
+ return ret;
+}
+
+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);
+ }
+}
+
+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);
+ struct ib_device_attr attr;
+ ssize_t ret;
+
+ ret = ib_query_device(dev, &attr);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%04x:%04x:%04x:%04x\n",
+ be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
+ be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
+ be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
+ be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
+}
+
+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]));
+}
+
+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);
+}
+
+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, 64));
+ ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+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 struct device_attribute *ib_class_attributes[] = {
+ &dev_attr_node_type,
+ &dev_attr_sys_image_guid,
+ &dev_attr_node_guid,
+ &dev_attr_node_desc
+};
+
+static struct class ib_class = {
+ .name = "infiniband",
+ .dev_release = ib_device_release,
+ .dev_uevent = ib_device_uevent,
+};
+
+/* Show a given an attribute in the statistics group */
+static ssize_t show_protocol_stat(const struct device *device,
+ struct device_attribute *attr, char *buf,
+ unsigned offset)
+{
+ struct ib_device *dev = container_of(device, struct ib_device, dev);
+ union rdma_protocol_stats stats;
+ ssize_t ret;
+
+ ret = dev->get_protocol_stats(dev, &stats);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%llu\n",
+ (unsigned long long) ((u64 *) &stats)[offset]);
+}
+
+/* generate a read-only iwarp statistics attribute */
+#define IW_STATS_ENTRY(name) \
+static ssize_t show_##name(struct device *device, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return show_protocol_stat(device, attr, buf, \
+ offsetof(struct iw_protocol_stats, name) / \
+ sizeof (u64)); \
+} \
+static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
+
+IW_STATS_ENTRY(ipInReceives);
+IW_STATS_ENTRY(ipInHdrErrors);
+IW_STATS_ENTRY(ipInTooBigErrors);
+IW_STATS_ENTRY(ipInNoRoutes);
+IW_STATS_ENTRY(ipInAddrErrors);
+IW_STATS_ENTRY(ipInUnknownProtos);
+IW_STATS_ENTRY(ipInTruncatedPkts);
+IW_STATS_ENTRY(ipInDiscards);
+IW_STATS_ENTRY(ipInDelivers);
+IW_STATS_ENTRY(ipOutForwDatagrams);
+IW_STATS_ENTRY(ipOutRequests);
+IW_STATS_ENTRY(ipOutDiscards);
+IW_STATS_ENTRY(ipOutNoRoutes);
+IW_STATS_ENTRY(ipReasmTimeout);
+IW_STATS_ENTRY(ipReasmReqds);
+IW_STATS_ENTRY(ipReasmOKs);
+IW_STATS_ENTRY(ipReasmFails);
+IW_STATS_ENTRY(ipFragOKs);
+IW_STATS_ENTRY(ipFragFails);
+IW_STATS_ENTRY(ipFragCreates);
+IW_STATS_ENTRY(ipInMcastPkts);
+IW_STATS_ENTRY(ipOutMcastPkts);
+IW_STATS_ENTRY(ipInBcastPkts);
+IW_STATS_ENTRY(ipOutBcastPkts);
+IW_STATS_ENTRY(tcpRtoAlgorithm);
+IW_STATS_ENTRY(tcpRtoMin);
+IW_STATS_ENTRY(tcpRtoMax);
+IW_STATS_ENTRY(tcpMaxConn);
+IW_STATS_ENTRY(tcpActiveOpens);
+IW_STATS_ENTRY(tcpPassiveOpens);
+IW_STATS_ENTRY(tcpAttemptFails);
+IW_STATS_ENTRY(tcpEstabResets);
+IW_STATS_ENTRY(tcpCurrEstab);
+IW_STATS_ENTRY(tcpInSegs);
+IW_STATS_ENTRY(tcpOutSegs);
+IW_STATS_ENTRY(tcpRetransSegs);
+IW_STATS_ENTRY(tcpInErrs);
+IW_STATS_ENTRY(tcpOutRsts);
+
+static struct attribute *iw_proto_stats_attrs[] = {
+ &dev_attr_ipInReceives.attr,
+ &dev_attr_ipInHdrErrors.attr,
+ &dev_attr_ipInTooBigErrors.attr,
+ &dev_attr_ipInNoRoutes.attr,
+ &dev_attr_ipInAddrErrors.attr,
+ &dev_attr_ipInUnknownProtos.attr,
+ &dev_attr_ipInTruncatedPkts.attr,
+ &dev_attr_ipInDiscards.attr,
+ &dev_attr_ipInDelivers.attr,
+ &dev_attr_ipOutForwDatagrams.attr,
+ &dev_attr_ipOutRequests.attr,
+ &dev_attr_ipOutDiscards.attr,
+ &dev_attr_ipOutNoRoutes.attr,
+ &dev_attr_ipReasmTimeout.attr,
+ &dev_attr_ipReasmReqds.attr,
+ &dev_attr_ipReasmOKs.attr,
+ &dev_attr_ipReasmFails.attr,
+ &dev_attr_ipFragOKs.attr,
+ &dev_attr_ipFragFails.attr,
+ &dev_attr_ipFragCreates.attr,
+ &dev_attr_ipInMcastPkts.attr,
+ &dev_attr_ipOutMcastPkts.attr,
+ &dev_attr_ipInBcastPkts.attr,
+ &dev_attr_ipOutBcastPkts.attr,
+ &dev_attr_tcpRtoAlgorithm.attr,
+ &dev_attr_tcpRtoMin.attr,
+ &dev_attr_tcpRtoMax.attr,
+ &dev_attr_tcpMaxConn.attr,
+ &dev_attr_tcpActiveOpens.attr,
+ &dev_attr_tcpPassiveOpens.attr,
+ &dev_attr_tcpAttemptFails.attr,
+ &dev_attr_tcpEstabResets.attr,
+ &dev_attr_tcpCurrEstab.attr,
+ &dev_attr_tcpInSegs.attr,
+ &dev_attr_tcpOutSegs.attr,
+ &dev_attr_tcpRetransSegs.attr,
+ &dev_attr_tcpInErrs.attr,
+ &dev_attr_tcpOutRsts.attr,
+ NULL
+};
+
+static struct attribute_group iw_stats_group = {
+ .name = "proto_stats",
+ .attrs = iw_proto_stats_attrs,
+};
+
+static void free_port_list_attributes(struct ib_device *device)
+{
+ struct kobject *p, *t;
+
+ list_for_each_entry_safe(p, t, &device->port_list, entry) {
+ struct ib_port *port = container_of(p, struct ib_port, kobj);
+ list_del(&p->entry);
+ sysfs_remove_group(p, &pma_group);
+ sysfs_remove_group(p, &port->pkey_group);
+ sysfs_remove_group(p, &port->gid_group);
+ kobject_put(p);
+ }
+
+ kobject_put(device->ports_parent);
+}
+
+int ib_device_register_sysfs(struct ib_device *device,
+ int (*port_callback)(struct ib_device *,
+ u8, struct kobject *))
+{
+ struct device *class_dev = &device->dev;
+ int ret;
+ int i;
+
+ class_dev->class = &ib_class;
+ class_dev->parent = device->dma_device;
+ dev_set_name(class_dev, "%s", device->name);
+ dev_set_drvdata(class_dev, device);
+
+ INIT_LIST_HEAD(&device->port_list);
+
+ ret = device_register(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 (device->node_type == RDMA_NODE_IB_SWITCH) {
+ 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->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
+ ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
+ if (ret)
+ goto err_put;
+ }
+
+ return 0;
+
+err_put:
+ free_port_list_attributes(device);
+
+err_unregister:
+ device_unregister(class_dev);
+
+err:
+ return ret;
+}
+
+void ib_device_unregister_sysfs(struct ib_device *device)
+{
+ /* Hold kobject until ib_dealloc_device() */
+ struct kobject *kobj_dev = kobject_get(&device->dev.kobj);
+ int i;
+
+ if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats)
+ sysfs_remove_group(kobj_dev, &iw_stats_group);
+
+ free_port_list_attributes(device);
+
+ for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
+ device_remove_file(&device->dev, ib_class_attributes[i]);
+
+ device_unregister(&device->dev);
+}
+
+int ib_sysfs_setup(void)
+{
+ return class_register(&ib_class);
+}
+
+void ib_sysfs_cleanup(void)
+{
+ class_unregister(&ib_class);
+}
Code Review / kvmfornfv.git / blobdiff