| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * QLogic FCoE Offload Driver |
| * Copyright (c) 2016-2018 QLogic Corporation |
| */ |
| #ifdef CONFIG_DEBUG_FS |
| |
| #include <linux/uaccess.h> |
| #include <linux/debugfs.h> |
| #include <linux/module.h> |
| |
| #include "qedf.h" |
| #include "qedf_dbg.h" |
| |
| static struct dentry *qedf_dbg_root; |
| |
| /** |
| * qedf_dbg_host_init - setup the debugfs file for the pf |
| * @pf: the pf that is starting up |
| **/ |
| void |
| qedf_dbg_host_init(struct qedf_dbg_ctx *qedf, |
| const struct qedf_debugfs_ops *dops, |
| const struct file_operations *fops) |
| { |
| char host_dirname[32]; |
| |
| QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Creating debugfs host node\n"); |
| /* create pf dir */ |
| sprintf(host_dirname, "host%u", qedf->host_no); |
| qedf->bdf_dentry = debugfs_create_dir(host_dirname, qedf_dbg_root); |
| |
| /* create debugfs files */ |
| while (dops) { |
| if (!(dops->name)) |
| break; |
| |
| debugfs_create_file(dops->name, 0600, qedf->bdf_dentry, qedf, |
| fops); |
| dops++; |
| fops++; |
| } |
| } |
| |
| /** |
| * qedf_dbg_host_exit - clear out the pf's debugfs entries |
| * @pf: the pf that is stopping |
| **/ |
| void |
| qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf) |
| { |
| QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Destroying debugfs host " |
| "entry\n"); |
| /* remove debugfs entries of this PF */ |
| debugfs_remove_recursive(qedf->bdf_dentry); |
| qedf->bdf_dentry = NULL; |
| } |
| |
| /** |
| * qedf_dbg_init - start up debugfs for the driver |
| **/ |
| void |
| qedf_dbg_init(char *drv_name) |
| { |
| QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Creating debugfs root node\n"); |
| |
| /* create qed dir in root of debugfs. NULL means debugfs root */ |
| qedf_dbg_root = debugfs_create_dir(drv_name, NULL); |
| } |
| |
| /** |
| * qedf_dbg_exit - clean out the driver's debugfs entries |
| **/ |
| void |
| qedf_dbg_exit(void) |
| { |
| QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Destroying debugfs root " |
| "entry\n"); |
| |
| /* remove qed dir in root of debugfs */ |
| debugfs_remove_recursive(qedf_dbg_root); |
| qedf_dbg_root = NULL; |
| } |
| |
| const struct qedf_debugfs_ops qedf_debugfs_ops[] = { |
| { "fp_int", NULL }, |
| { "io_trace", NULL }, |
| { "debug", NULL }, |
| { "stop_io_on_error", NULL}, |
| { "driver_stats", NULL}, |
| { "clear_stats", NULL}, |
| { "offload_stats", NULL}, |
| /* This must be last */ |
| { NULL, NULL } |
| }; |
| |
| DECLARE_PER_CPU(struct qedf_percpu_iothread_s, qedf_percpu_iothreads); |
| |
| static ssize_t |
| qedf_dbg_fp_int_cmd_read(struct file *filp, char __user *buffer, size_t count, |
| loff_t *ppos) |
| { |
| size_t cnt = 0; |
| int id; |
| struct qedf_fastpath *fp = NULL; |
| 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, "entered\n"); |
| |
| cnt = sprintf(buffer, "\nFastpath I/O completions\n\n"); |
| |
| for (id = 0; id < qedf->num_queues; id++) { |
| fp = &(qedf->fp_array[id]); |
| if (fp->sb_id == QEDF_SB_ID_NULL) |
| continue; |
| cnt += sprintf((buffer + cnt), "#%d: %lu\n", id, |
| fp->completions); |
| } |
| |
| cnt = min_t(int, count, cnt - *ppos); |
| *ppos += cnt; |
| return cnt; |
| } |
| |
| static ssize_t |
| qedf_dbg_fp_int_cmd_write(struct file *filp, const char __user *buffer, |
| size_t count, loff_t *ppos) |
| { |
| if (!count || *ppos) |
| return 0; |
| |
| return count; |
| } |
| |
| static ssize_t |
| qedf_dbg_debug_cmd_read(struct file *filp, char __user *buffer, size_t count, |
| loff_t *ppos) |
| { |
| int cnt; |
| struct qedf_dbg_ctx *qedf = |
| (struct qedf_dbg_ctx *)filp->private_data; |
| |
| QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "entered\n"); |
| cnt = sprintf(buffer, "debug mask = 0x%x\n", qedf_debug); |
| |
| cnt = min_t(int, count, cnt - *ppos); |
| *ppos += cnt; |
| return cnt; |
| } |
| |
| static ssize_t |
| qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer, |
| size_t count, loff_t *ppos) |
| { |
| uint32_t val; |
| void *kern_buf; |
| int rval; |
| struct qedf_dbg_ctx *qedf = |
| (struct qedf_dbg_ctx *)filp->private_data; |
| |
| if (!count || *ppos) |
| return 0; |
| |
| kern_buf = memdup_user(buffer, count); |
| if (IS_ERR(kern_buf)) |
| return PTR_ERR(kern_buf); |
| |
| rval = kstrtouint(kern_buf, 10, &val); |
| kfree(kern_buf); |
| if (rval) |
| return rval; |
| |
| if (val == 1) |
| qedf_debug = QEDF_DEFAULT_LOG_MASK; |
| else |
| qedf_debug = val; |
| |
| QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val); |
| return count; |
| } |
| |
| static ssize_t |
| qedf_dbg_stop_io_on_error_cmd_read(struct file *filp, char __user *buffer, |
| size_t count, loff_t *ppos) |
| { |
| int cnt; |
| 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, "entered\n"); |
| cnt = sprintf(buffer, "%s\n", |
| qedf->stop_io_on_error ? "true" : "false"); |
| |
| cnt = min_t(int, count, cnt - *ppos); |
| *ppos += cnt; |
| return cnt; |
| } |
| |
| static ssize_t |
| qedf_dbg_stop_io_on_error_cmd_write(struct file *filp, |
| const char __user *buffer, size_t count, |
| loff_t *ppos) |
| { |
| void *kern_buf; |
| 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, "entered\n"); |
| |
| if (!count || *ppos) |
| return 0; |
| |
| kern_buf = memdup_user(buffer, 6); |
| if (IS_ERR(kern_buf)) |
| return PTR_ERR(kern_buf); |
| |
| if (strncmp(kern_buf, "false", 5) == 0) |
| qedf->stop_io_on_error = false; |
| else if (strncmp(kern_buf, "true", 4) == 0) |
| qedf->stop_io_on_error = true; |
| else if (strncmp(kern_buf, "now", 3) == 0) |
| /* Trigger from user to stop all I/O on this host */ |
| set_bit(QEDF_DBG_STOP_IO, &qedf->flags); |
| |
| kfree(kern_buf); |
| return count; |
| } |
| |
| static int |
| qedf_io_trace_show(struct seq_file *s, void *unused) |
| { |
| int i, idx = 0; |
| struct qedf_ctx *qedf = s->private; |
| struct qedf_dbg_ctx *qedf_dbg = &qedf->dbg_ctx; |
| struct qedf_io_log *io_log; |
| unsigned long flags; |
| |
| if (!qedf_io_tracing) { |
| seq_puts(s, "I/O tracing not enabled.\n"); |
| goto out; |
| } |
| |
| QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n"); |
| |
| spin_lock_irqsave(&qedf->io_trace_lock, flags); |
| idx = qedf->io_trace_idx; |
| for (i = 0; i < QEDF_IO_TRACE_SIZE; i++) { |
| io_log = &qedf->io_trace_buf[idx]; |
| seq_printf(s, "%d:", io_log->direction); |
| seq_printf(s, "0x%x:", io_log->task_id); |
| seq_printf(s, "0x%06x:", io_log->port_id); |
| seq_printf(s, "%d:", io_log->lun); |
| seq_printf(s, "0x%02x:", io_log->op); |
| seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0], |
| io_log->lba[1], io_log->lba[2], io_log->lba[3]); |
| seq_printf(s, "%d:", io_log->bufflen); |
| seq_printf(s, "%d:", io_log->sg_count); |
| seq_printf(s, "0x%08x:", io_log->result); |
| seq_printf(s, "%lu:", io_log->jiffies); |
| seq_printf(s, "%d:", io_log->refcount); |
| seq_printf(s, "%d:", io_log->req_cpu); |
| seq_printf(s, "%d:", io_log->int_cpu); |
| seq_printf(s, "%d:", io_log->rsp_cpu); |
| seq_printf(s, "%d\n", io_log->sge_type); |
| |
| idx++; |
| if (idx == QEDF_IO_TRACE_SIZE) |
| idx = 0; |
| } |
| spin_unlock_irqrestore(&qedf->io_trace_lock, flags); |
| |
| out: |
| return 0; |
| } |
| |
| static int |
| qedf_dbg_io_trace_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_io_trace_show, qedf); |
| } |
| |
| /* Based on fip_state enum from libfcoe.h */ |
| static char *fip_state_names[] = { |
| "FIP_ST_DISABLED", |
| "FIP_ST_LINK_WAIT", |
| "FIP_ST_AUTO", |
| "FIP_ST_NON_FIP", |
| "FIP_ST_ENABLED", |
| "FIP_ST_VNMP_START", |
| "FIP_ST_VNMP_PROBE1", |
| "FIP_ST_VNMP_PROBE2", |
| "FIP_ST_VNMP_CLAIM", |
| "FIP_ST_VNMP_UP", |
| }; |
| |
| /* Based on fc_rport_state enum from libfc.h */ |
| static char *fc_rport_state_names[] = { |
| "RPORT_ST_INIT", |
| "RPORT_ST_FLOGI", |
| "RPORT_ST_PLOGI_WAIT", |
| "RPORT_ST_PLOGI", |
| "RPORT_ST_PRLI", |
| "RPORT_ST_RTV", |
| "RPORT_ST_READY", |
| "RPORT_ST_ADISC", |
| "RPORT_ST_DELETE", |
| }; |
| |
| static int |
| qedf_driver_stats_show(struct seq_file *s, void *unused) |
| { |
| struct qedf_ctx *qedf = s->private; |
| struct qedf_rport *fcport; |
| struct fc_rport_priv *rdata; |
| |
| seq_printf(s, "Host WWNN/WWPN: %016llx/%016llx\n", |
| qedf->wwnn, qedf->wwpn); |
| seq_printf(s, "Host NPortID: %06x\n", qedf->lport->port_id); |
| seq_printf(s, "Link State: %s\n", atomic_read(&qedf->link_state) ? |
| "Up" : "Down"); |
| seq_printf(s, "Logical Link State: %s\n", qedf->lport->link_up ? |
| "Up" : "Down"); |
| seq_printf(s, "FIP state: %s\n", fip_state_names[qedf->ctlr.state]); |
| seq_printf(s, "FIP VLAN ID: %d\n", qedf->vlan_id & 0xfff); |
| seq_printf(s, "FIP 802.1Q Priority: %d\n", qedf->prio); |
| if (qedf->ctlr.sel_fcf) { |
| seq_printf(s, "FCF WWPN: %016llx\n", |
| qedf->ctlr.sel_fcf->switch_name); |
| seq_printf(s, "FCF MAC: %pM\n", qedf->ctlr.sel_fcf->fcf_mac); |
| } else { |
| seq_puts(s, "FCF not selected\n"); |
| } |
| |
| seq_puts(s, "\nSGE stats:\n\n"); |
| seq_printf(s, "cmg_mgr free io_reqs: %d\n", |
| atomic_read(&qedf->cmd_mgr->free_list_cnt)); |
| seq_printf(s, "slow SGEs: %d\n", qedf->slow_sge_ios); |
| seq_printf(s, "fast SGEs: %d\n\n", qedf->fast_sge_ios); |
| |
| seq_puts(s, "Offloaded ports:\n\n"); |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { |
| rdata = fcport->rdata; |
| if (rdata == NULL) |
| continue; |
| seq_printf(s, "%016llx/%016llx/%06x: state=%s, free_sqes=%d, num_active_ios=%d\n", |
| rdata->rport->node_name, rdata->rport->port_name, |
| rdata->ids.port_id, |
| fc_rport_state_names[rdata->rp_state], |
| atomic_read(&fcport->free_sqes), |
| atomic_read(&fcport->num_active_ios)); |
| } |
| rcu_read_unlock(); |
| |
| return 0; |
| } |
| |
| static int |
| qedf_dbg_driver_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_driver_stats_show, qedf); |
| } |
| |
| static ssize_t |
| qedf_dbg_clear_stats_cmd_read(struct file *filp, char __user *buffer, |
| 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->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 */ |