--- /dev/null
+/*
+ * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_addr.h>
+
+#include "usnic_common_util.h"
+#include "usnic_ib.h"
+#include "usnic_ib_qp_grp.h"
+#include "usnic_vnic.h"
+#include "usnic_ib_verbs.h"
+#include "usnic_log.h"
+
+static ssize_t usnic_ib_show_fw_ver(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev =
+ container_of(device, struct usnic_ib_dev, ib_dev.dev);
+ struct ethtool_drvinfo info;
+
+ mutex_lock(&us_ibdev->usdev_lock);
+ us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
+ mutex_unlock(&us_ibdev->usdev_lock);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", info.fw_version);
+}
+
+static ssize_t usnic_ib_show_board(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev =
+ container_of(device, struct usnic_ib_dev, ib_dev.dev);
+ unsigned short subsystem_device_id;
+
+ mutex_lock(&us_ibdev->usdev_lock);
+ subsystem_device_id = us_ibdev->pdev->subsystem_device;
+ mutex_unlock(&us_ibdev->usdev_lock);
+
+ return scnprintf(buf, PAGE_SIZE, "%hu\n", subsystem_device_id);
+}
+
+/*
+ * Report the configuration for this PF
+ */
+static ssize_t
+usnic_ib_show_config(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev;
+ char *ptr;
+ unsigned left;
+ unsigned n;
+ enum usnic_vnic_res_type res_type;
+
+ us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
+
+ /* Buffer space limit is 1 page */
+ ptr = buf;
+ left = PAGE_SIZE;
+
+ mutex_lock(&us_ibdev->usdev_lock);
+ if (atomic_read(&us_ibdev->vf_cnt.refcount) > 0) {
+ char *busname;
+
+ /*
+ * bus name seems to come with annoying prefix.
+ * Remove it if it is predictable
+ */
+ busname = us_ibdev->pdev->bus->name;
+ if (strncmp(busname, "PCI Bus ", 8) == 0)
+ busname += 8;
+
+ n = scnprintf(ptr, left,
+ "%s: %s:%d.%d, %s, %pM, %u VFs\n Per VF:",
+ us_ibdev->ib_dev.name,
+ busname,
+ PCI_SLOT(us_ibdev->pdev->devfn),
+ PCI_FUNC(us_ibdev->pdev->devfn),
+ netdev_name(us_ibdev->netdev),
+ us_ibdev->ufdev->mac,
+ atomic_read(&us_ibdev->vf_cnt.refcount));
+ UPDATE_PTR_LEFT(n, ptr, left);
+
+ for (res_type = USNIC_VNIC_RES_TYPE_EOL;
+ res_type < USNIC_VNIC_RES_TYPE_MAX;
+ res_type++) {
+ if (us_ibdev->vf_res_cnt[res_type] == 0)
+ continue;
+ n = scnprintf(ptr, left, " %d %s%s",
+ us_ibdev->vf_res_cnt[res_type],
+ usnic_vnic_res_type_to_str(res_type),
+ (res_type < (USNIC_VNIC_RES_TYPE_MAX - 1)) ?
+ "," : "");
+ UPDATE_PTR_LEFT(n, ptr, left);
+ }
+ n = scnprintf(ptr, left, "\n");
+ UPDATE_PTR_LEFT(n, ptr, left);
+ } else {
+ n = scnprintf(ptr, left, "%s: no VFs\n",
+ us_ibdev->ib_dev.name);
+ UPDATE_PTR_LEFT(n, ptr, left);
+ }
+ mutex_unlock(&us_ibdev->usdev_lock);
+
+ return ptr - buf;
+}
+
+static ssize_t
+usnic_ib_show_iface(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev;
+
+ us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n",
+ netdev_name(us_ibdev->netdev));
+}
+
+static ssize_t
+usnic_ib_show_max_vf(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev;
+
+ us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ atomic_read(&us_ibdev->vf_cnt.refcount));
+}
+
+static ssize_t
+usnic_ib_show_qp_per_vf(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev;
+ int qp_per_vf;
+
+ us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
+ qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
+ us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
+
+ return scnprintf(buf, PAGE_SIZE,
+ "%d\n", qp_per_vf);
+}
+
+static ssize_t
+usnic_ib_show_cq_per_vf(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct usnic_ib_dev *us_ibdev;
+
+ us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n",
+ us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
+}
+
+static DEVICE_ATTR(fw_ver, S_IRUGO, usnic_ib_show_fw_ver, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, usnic_ib_show_board, NULL);
+static DEVICE_ATTR(config, S_IRUGO, usnic_ib_show_config, NULL);
+static DEVICE_ATTR(iface, S_IRUGO, usnic_ib_show_iface, NULL);
+static DEVICE_ATTR(max_vf, S_IRUGO, usnic_ib_show_max_vf, NULL);
+static DEVICE_ATTR(qp_per_vf, S_IRUGO, usnic_ib_show_qp_per_vf, NULL);
+static DEVICE_ATTR(cq_per_vf, S_IRUGO, usnic_ib_show_cq_per_vf, NULL);
+
+static struct device_attribute *usnic_class_attributes[] = {
+ &dev_attr_fw_ver,
+ &dev_attr_board_id,
+ &dev_attr_config,
+ &dev_attr_iface,
+ &dev_attr_max_vf,
+ &dev_attr_qp_per_vf,
+ &dev_attr_cq_per_vf,
+};
+
+struct qpn_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf);
+};
+
+/*
+ * Definitions for supporting QPN entries in sysfs
+ */
+static ssize_t
+usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ struct usnic_ib_qp_grp *qp_grp;
+ struct qpn_attribute *qpn_attr;
+
+ qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj);
+ qpn_attr = container_of(attr, struct qpn_attribute, attr);
+
+ return qpn_attr->show(qp_grp, buf);
+}
+
+static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = {
+ .show = usnic_ib_qpn_attr_show
+};
+
+#define QPN_ATTR_RO(NAME) \
+struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME)
+
+static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "0x%p\n", qp_grp->ctx);
+}
+
+static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
+{
+ int i, j, n;
+ int left;
+ char *ptr;
+ struct usnic_vnic_res_chunk *res_chunk;
+ struct usnic_vnic_res *vnic_res;
+
+ left = PAGE_SIZE;
+ ptr = buf;
+
+ n = scnprintf(ptr, left,
+ "QPN: %d State: (%s) PID: %u VF Idx: %hu ",
+ qp_grp->ibqp.qp_num,
+ usnic_ib_qp_grp_state_to_string(qp_grp->state),
+ qp_grp->owner_pid,
+ usnic_vnic_get_index(qp_grp->vf->vnic));
+ UPDATE_PTR_LEFT(n, ptr, left);
+
+ for (i = 0; qp_grp->res_chunk_list[i]; i++) {
+ res_chunk = qp_grp->res_chunk_list[i];
+ for (j = 0; j < res_chunk->cnt; j++) {
+ vnic_res = res_chunk->res[j];
+ n = scnprintf(ptr, left, "%s[%d] ",
+ usnic_vnic_res_type_to_str(vnic_res->type),
+ vnic_res->vnic_idx);
+ UPDATE_PTR_LEFT(n, ptr, left);
+ }
+ }
+
+ n = scnprintf(ptr, left, "\n");
+ UPDATE_PTR_LEFT(n, ptr, left);
+
+ return ptr - buf;
+}
+
+static QPN_ATTR_RO(context);
+static QPN_ATTR_RO(summary);
+
+static struct attribute *usnic_ib_qpn_default_attrs[] = {
+ &qpn_attr_context.attr,
+ &qpn_attr_summary.attr,
+ NULL
+};
+
+static struct kobj_type usnic_ib_qpn_type = {
+ .sysfs_ops = &usnic_ib_qpn_sysfs_ops,
+ .default_attrs = usnic_ib_qpn_default_attrs
+};
+
+int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev)
+{
+ int i;
+ int err;
+ for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
+ err = device_create_file(&us_ibdev->ib_dev.dev,
+ usnic_class_attributes[i]);
+ if (err) {
+ usnic_err("Failed to create device file %d for %s eith err %d",
+ i, us_ibdev->ib_dev.name, err);
+ return -EINVAL;
+ }
+ }
+
+ /* create kernel object for looking at individual QPs */
+ kobject_get(&us_ibdev->ib_dev.dev.kobj);
+ us_ibdev->qpn_kobj = kobject_create_and_add("qpn",
+ &us_ibdev->ib_dev.dev.kobj);
+ if (us_ibdev->qpn_kobj == NULL) {
+ kobject_put(&us_ibdev->ib_dev.dev.kobj);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
+ device_remove_file(&us_ibdev->ib_dev.dev,
+ usnic_class_attributes[i]);
+ }
+
+ kobject_put(us_ibdev->qpn_kobj);
+}
+
+void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp)
+{
+ struct usnic_ib_dev *us_ibdev;
+ int err;
+
+ us_ibdev = qp_grp->vf->pf;
+
+ err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type,
+ kobject_get(us_ibdev->qpn_kobj),
+ "%d", qp_grp->grp_id);
+ if (err) {
+ kobject_put(us_ibdev->qpn_kobj);
+ return;
+ }
+}
+
+void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp)
+{
+ struct usnic_ib_dev *us_ibdev;
+
+ us_ibdev = qp_grp->vf->pf;
+
+ kobject_put(&qp_grp->kobj);
+ kobject_put(us_ibdev->qpn_kobj);
+}
Code Review / kvmfornfv.git / blobdiff