461 lines
12 KiB
C
461 lines
12 KiB
C
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/*
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* QLogic FCoE Offload Driver
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* Copyright (c) 2016-2017 QLogic Corporation
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*
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* This software is available under the terms of the GNU General Public License
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* (GPL) Version 2, available from the file COPYING in the main directory of
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* this source tree.
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*/
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#ifdef CONFIG_DEBUG_FS
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#include <linux/uaccess.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include "qedf.h"
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#include "qedf_dbg.h"
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static struct dentry *qedf_dbg_root;
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/**
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* qedf_dbg_host_init - setup the debugfs file for the pf
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* @pf: the pf that is starting up
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**/
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void
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qedf_dbg_host_init(struct qedf_dbg_ctx *qedf,
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struct qedf_debugfs_ops *dops,
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struct file_operations *fops)
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{
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char host_dirname[32];
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struct dentry *file_dentry = NULL;
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QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Creating debugfs host node\n");
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/* create pf dir */
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sprintf(host_dirname, "host%u", qedf->host_no);
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qedf->bdf_dentry = debugfs_create_dir(host_dirname, qedf_dbg_root);
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if (!qedf->bdf_dentry)
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return;
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/* create debugfs files */
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while (dops) {
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if (!(dops->name))
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break;
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file_dentry = debugfs_create_file(dops->name, 0600,
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qedf->bdf_dentry, qedf,
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fops);
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if (!file_dentry) {
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QEDF_INFO(qedf, QEDF_LOG_DEBUGFS,
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"Debugfs entry %s creation failed\n",
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dops->name);
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debugfs_remove_recursive(qedf->bdf_dentry);
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return;
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}
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dops++;
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fops++;
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}
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}
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/**
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* qedf_dbg_host_exit - clear out the pf's debugfs entries
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* @pf: the pf that is stopping
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**/
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void
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qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf)
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{
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QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Destroying debugfs host "
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"entry\n");
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/* remove debugfs entries of this PF */
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debugfs_remove_recursive(qedf->bdf_dentry);
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qedf->bdf_dentry = NULL;
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}
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/**
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* qedf_dbg_init - start up debugfs for the driver
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**/
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void
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qedf_dbg_init(char *drv_name)
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{
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QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Creating debugfs root node\n");
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/* create qed dir in root of debugfs. NULL means debugfs root */
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qedf_dbg_root = debugfs_create_dir(drv_name, NULL);
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if (!qedf_dbg_root)
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QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Init of debugfs "
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"failed\n");
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}
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/**
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* qedf_dbg_exit - clean out the driver's debugfs entries
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**/
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void
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qedf_dbg_exit(void)
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{
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QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Destroying debugfs root "
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"entry\n");
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/* remove qed dir in root of debugfs */
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debugfs_remove_recursive(qedf_dbg_root);
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qedf_dbg_root = NULL;
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}
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struct qedf_debugfs_ops qedf_debugfs_ops[] = {
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{ "fp_int", NULL },
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{ "io_trace", NULL },
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{ "debug", NULL },
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{ "stop_io_on_error", NULL},
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{ "driver_stats", NULL},
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{ "clear_stats", NULL},
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{ "offload_stats", NULL},
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/* This must be last */
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{ NULL, NULL }
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};
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DECLARE_PER_CPU(struct qedf_percpu_iothread_s, qedf_percpu_iothreads);
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static ssize_t
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qedf_dbg_fp_int_cmd_read(struct file *filp, char __user *buffer, size_t count,
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loff_t *ppos)
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{
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size_t cnt = 0;
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int id;
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struct qedf_fastpath *fp = NULL;
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struct qedf_dbg_ctx *qedf_dbg =
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(struct qedf_dbg_ctx *)filp->private_data;
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struct qedf_ctx *qedf = container_of(qedf_dbg,
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struct qedf_ctx, dbg_ctx);
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QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
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cnt = sprintf(buffer, "\nFastpath I/O completions\n\n");
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for (id = 0; id < qedf->num_queues; id++) {
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fp = &(qedf->fp_array[id]);
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if (fp->sb_id == QEDF_SB_ID_NULL)
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continue;
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cnt += sprintf((buffer + cnt), "#%d: %lu\n", id,
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fp->completions);
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}
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cnt = min_t(int, count, cnt - *ppos);
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*ppos += cnt;
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return cnt;
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}
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static ssize_t
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qedf_dbg_fp_int_cmd_write(struct file *filp, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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if (!count || *ppos)
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return 0;
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return count;
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}
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static ssize_t
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qedf_dbg_debug_cmd_read(struct file *filp, char __user *buffer, size_t count,
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loff_t *ppos)
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{
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int cnt;
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struct qedf_dbg_ctx *qedf =
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(struct qedf_dbg_ctx *)filp->private_data;
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QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "entered\n");
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cnt = sprintf(buffer, "debug mask = 0x%x\n", qedf_debug);
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cnt = min_t(int, count, cnt - *ppos);
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*ppos += cnt;
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return cnt;
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}
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static ssize_t
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qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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uint32_t val;
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void *kern_buf;
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int rval;
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struct qedf_dbg_ctx *qedf =
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(struct qedf_dbg_ctx *)filp->private_data;
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if (!count || *ppos)
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return 0;
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kern_buf = memdup_user(buffer, count);
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if (IS_ERR(kern_buf))
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return PTR_ERR(kern_buf);
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rval = kstrtouint(kern_buf, 10, &val);
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kfree(kern_buf);
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if (rval)
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return rval;
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if (val == 1)
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qedf_debug = QEDF_DEFAULT_LOG_MASK;
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else
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qedf_debug = val;
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QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val);
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return count;
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}
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static ssize_t
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qedf_dbg_stop_io_on_error_cmd_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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int cnt;
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struct qedf_dbg_ctx *qedf_dbg =
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(struct qedf_dbg_ctx *)filp->private_data;
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struct qedf_ctx *qedf = container_of(qedf_dbg,
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struct qedf_ctx, dbg_ctx);
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QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
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cnt = sprintf(buffer, "%s\n",
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qedf->stop_io_on_error ? "true" : "false");
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cnt = min_t(int, count, cnt - *ppos);
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*ppos += cnt;
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return cnt;
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}
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static ssize_t
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qedf_dbg_stop_io_on_error_cmd_write(struct file *filp,
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const char __user *buffer, size_t count,
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loff_t *ppos)
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{
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void *kern_buf;
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struct qedf_dbg_ctx *qedf_dbg =
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(struct qedf_dbg_ctx *)filp->private_data;
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struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
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dbg_ctx);
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QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
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if (!count || *ppos)
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return 0;
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kern_buf = memdup_user(buffer, 6);
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if (IS_ERR(kern_buf))
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return PTR_ERR(kern_buf);
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if (strncmp(kern_buf, "false", 5) == 0)
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qedf->stop_io_on_error = false;
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else if (strncmp(kern_buf, "true", 4) == 0)
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qedf->stop_io_on_error = true;
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else if (strncmp(kern_buf, "now", 3) == 0)
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/* Trigger from user to stop all I/O on this host */
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set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
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kfree(kern_buf);
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return count;
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}
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static int
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qedf_io_trace_show(struct seq_file *s, void *unused)
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{
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int i, idx = 0;
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struct qedf_ctx *qedf = s->private;
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struct qedf_dbg_ctx *qedf_dbg = &qedf->dbg_ctx;
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struct qedf_io_log *io_log;
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unsigned long flags;
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if (!qedf_io_tracing) {
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seq_puts(s, "I/O tracing not enabled.\n");
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goto out;
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}
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QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
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spin_lock_irqsave(&qedf->io_trace_lock, flags);
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idx = qedf->io_trace_idx;
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for (i = 0; i < QEDF_IO_TRACE_SIZE; i++) {
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io_log = &qedf->io_trace_buf[idx];
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seq_printf(s, "%d:", io_log->direction);
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seq_printf(s, "0x%x:", io_log->task_id);
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seq_printf(s, "0x%06x:", io_log->port_id);
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seq_printf(s, "%d:", io_log->lun);
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seq_printf(s, "0x%02x:", io_log->op);
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seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
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io_log->lba[1], io_log->lba[2], io_log->lba[3]);
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seq_printf(s, "%d:", io_log->bufflen);
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seq_printf(s, "%d:", io_log->sg_count);
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seq_printf(s, "0x%08x:", io_log->result);
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seq_printf(s, "%lu:", io_log->jiffies);
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seq_printf(s, "%d:", io_log->refcount);
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seq_printf(s, "%d:", io_log->req_cpu);
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seq_printf(s, "%d:", io_log->int_cpu);
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seq_printf(s, "%d:", io_log->rsp_cpu);
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seq_printf(s, "%d\n", io_log->sge_type);
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idx++;
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if (idx == QEDF_IO_TRACE_SIZE)
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idx = 0;
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}
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spin_unlock_irqrestore(&qedf->io_trace_lock, flags);
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out:
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return 0;
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}
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static int
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qedf_dbg_io_trace_open(struct inode *inode, struct file *file)
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{
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struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
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struct qedf_ctx *qedf = container_of(qedf_dbg,
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struct qedf_ctx, dbg_ctx);
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return single_open(file, qedf_io_trace_show, qedf);
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}
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static int
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qedf_driver_stats_show(struct seq_file *s, void *unused)
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{
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struct qedf_ctx *qedf = s->private;
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struct qedf_rport *fcport;
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struct fc_rport_priv *rdata;
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seq_printf(s, "cmg_mgr free io_reqs: %d\n",
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atomic_read(&qedf->cmd_mgr->free_list_cnt));
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seq_printf(s, "slow SGEs: %d\n", qedf->slow_sge_ios);
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seq_printf(s, "single SGEs: %d\n", qedf->single_sge_ios);
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seq_printf(s, "fast SGEs: %d\n\n", qedf->fast_sge_ios);
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seq_puts(s, "Offloaded ports:\n\n");
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rcu_read_lock();
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list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
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rdata = fcport->rdata;
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if (rdata == NULL)
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continue;
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seq_printf(s, "%06x: free_sqes: %d, num_active_ios: %d\n",
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rdata->ids.port_id, atomic_read(&fcport->free_sqes),
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atomic_read(&fcport->num_active_ios));
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}
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rcu_read_unlock();
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return 0;
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}
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static int
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qedf_dbg_driver_stats_open(struct inode *inode, struct file *file)
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{
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struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
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struct qedf_ctx *qedf = container_of(qedf_dbg,
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struct qedf_ctx, dbg_ctx);
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return single_open(file, qedf_driver_stats_show, qedf);
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}
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static ssize_t
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qedf_dbg_clear_stats_cmd_read(struct file *filp, char __user *buffer,
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|
|
size_t count, loff_t *ppos)
|
||
|
|
{
|
||
|
|
int cnt = 0;
|
||
|
|
|
||
|
|
/* Essentially a read stub */
|
||
|
|
cnt = min_t(int, count, cnt - *ppos);
|
||
|
|
*ppos += cnt;
|
||
|
|
return cnt;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t
|
||
|
|
qedf_dbg_clear_stats_cmd_write(struct file *filp,
|
||
|
|
const char __user *buffer, size_t count,
|
||
|
|
loff_t *ppos)
|
||
|
|
{
|
||
|
|
struct qedf_dbg_ctx *qedf_dbg =
|
||
|
|
(struct qedf_dbg_ctx *)filp->private_data;
|
||
|
|
struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
|
||
|
|
dbg_ctx);
|
||
|
|
|
||
|
|
QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Clearing stat counters.\n");
|
||
|
|
|
||
|
|
if (!count || *ppos)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* Clear stat counters exposed by 'stats' node */
|
||
|
|
qedf->slow_sge_ios = 0;
|
||
|
|
qedf->single_sge_ios = 0;
|
||
|
|
qedf->fast_sge_ios = 0;
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
qedf_offload_stats_show(struct seq_file *s, void *unused)
|
||
|
|
{
|
||
|
|
struct qedf_ctx *qedf = s->private;
|
||
|
|
struct qed_fcoe_stats *fw_fcoe_stats;
|
||
|
|
|
||
|
|
fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
|
||
|
|
if (!fw_fcoe_stats) {
|
||
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
|
||
|
|
"fw_fcoe_stats.\n");
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Query firmware for offload stats */
|
||
|
|
qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
|
||
|
|
|
||
|
|
seq_printf(s, "fcoe_rx_byte_cnt=%llu\n"
|
||
|
|
"fcoe_rx_data_pkt_cnt=%llu\n"
|
||
|
|
"fcoe_rx_xfer_pkt_cnt=%llu\n"
|
||
|
|
"fcoe_rx_other_pkt_cnt=%llu\n"
|
||
|
|
"fcoe_silent_drop_pkt_cmdq_full_cnt=%u\n"
|
||
|
|
"fcoe_silent_drop_pkt_crc_error_cnt=%u\n"
|
||
|
|
"fcoe_silent_drop_pkt_task_invalid_cnt=%u\n"
|
||
|
|
"fcoe_silent_drop_total_pkt_cnt=%u\n"
|
||
|
|
"fcoe_silent_drop_pkt_rq_full_cnt=%u\n"
|
||
|
|
"fcoe_tx_byte_cnt=%llu\n"
|
||
|
|
"fcoe_tx_data_pkt_cnt=%llu\n"
|
||
|
|
"fcoe_tx_xfer_pkt_cnt=%llu\n"
|
||
|
|
"fcoe_tx_other_pkt_cnt=%llu\n",
|
||
|
|
fw_fcoe_stats->fcoe_rx_byte_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_rx_data_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_rx_other_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_silent_drop_pkt_cmdq_full_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_silent_drop_pkt_task_invalid_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_silent_drop_pkt_rq_full_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_tx_byte_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_tx_data_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt,
|
||
|
|
fw_fcoe_stats->fcoe_tx_other_pkt_cnt);
|
||
|
|
|
||
|
|
kfree(fw_fcoe_stats);
|
||
|
|
out:
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
qedf_dbg_offload_stats_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
|
||
|
|
struct qedf_ctx *qedf = container_of(qedf_dbg,
|
||
|
|
struct qedf_ctx, dbg_ctx);
|
||
|
|
|
||
|
|
return single_open(file, qedf_offload_stats_show, qedf);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
const struct file_operations qedf_dbg_fops[] = {
|
||
|
|
qedf_dbg_fileops(qedf, fp_int),
|
||
|
|
qedf_dbg_fileops_seq(qedf, io_trace),
|
||
|
|
qedf_dbg_fileops(qedf, debug),
|
||
|
|
qedf_dbg_fileops(qedf, stop_io_on_error),
|
||
|
|
qedf_dbg_fileops_seq(qedf, driver_stats),
|
||
|
|
qedf_dbg_fileops(qedf, clear_stats),
|
||
|
|
qedf_dbg_fileops_seq(qedf, offload_stats),
|
||
|
|
/* This must be last */
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
|
||
|
|
#else /* CONFIG_DEBUG_FS */
|
||
|
|
void qedf_dbg_host_init(struct qedf_dbg_ctx *);
|
||
|
|
void qedf_dbg_host_exit(struct qedf_dbg_ctx *);
|
||
|
|
void qedf_dbg_init(char *);
|
||
|
|
void qedf_dbg_exit(void);
|
||
|
|
#endif /* CONFIG_DEBUG_FS */
|