![Markus Elfring](/assets/img/avatar_default.png)
Two single characters should be put into a sequence. Thus use the corresponding function "seq_putc". This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
259 lines
6.6 KiB
C
259 lines
6.6 KiB
C
/* Intel(R) Ethernet Switch Host Interface Driver
|
|
* Copyright(c) 2013 - 2016 Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* The full GNU General Public License is included in this distribution in
|
|
* the file called "COPYING".
|
|
*
|
|
* Contact Information:
|
|
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
*/
|
|
|
|
#include "fm10k.h"
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
static struct dentry *dbg_root;
|
|
|
|
/* Descriptor Seq Functions */
|
|
|
|
static void *fm10k_dbg_desc_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
struct fm10k_ring *ring = s->private;
|
|
|
|
return (*pos < ring->count) ? pos : NULL;
|
|
}
|
|
|
|
static void *fm10k_dbg_desc_seq_next(struct seq_file *s,
|
|
void __always_unused *v,
|
|
loff_t *pos)
|
|
{
|
|
struct fm10k_ring *ring = s->private;
|
|
|
|
return (++(*pos) < ring->count) ? pos : NULL;
|
|
}
|
|
|
|
static void fm10k_dbg_desc_seq_stop(struct seq_file __always_unused *s,
|
|
void __always_unused *v)
|
|
{
|
|
/* Do nothing. */
|
|
}
|
|
|
|
static void fm10k_dbg_desc_break(struct seq_file *s, int i)
|
|
{
|
|
while (i--)
|
|
seq_putc(s, '-');
|
|
|
|
seq_putc(s, '\n');
|
|
}
|
|
|
|
static int fm10k_dbg_tx_desc_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct fm10k_ring *ring = s->private;
|
|
int i = *(loff_t *)v;
|
|
static const char tx_desc_hdr[] =
|
|
"DES BUFFER_ADDRESS LENGTH VLAN MSS HDRLEN FLAGS\n";
|
|
|
|
/* Generate header */
|
|
if (!i) {
|
|
seq_printf(s, tx_desc_hdr);
|
|
fm10k_dbg_desc_break(s, sizeof(tx_desc_hdr) - 1);
|
|
}
|
|
|
|
/* Validate descriptor allocation */
|
|
if (!ring->desc) {
|
|
seq_printf(s, "%03X Descriptor ring not allocated.\n", i);
|
|
} else {
|
|
struct fm10k_tx_desc *txd = FM10K_TX_DESC(ring, i);
|
|
|
|
seq_printf(s, "%03X %#018llx %#06x %#06x %#06x %#06x %#04x\n",
|
|
i, txd->buffer_addr, txd->buflen, txd->vlan,
|
|
txd->mss, txd->hdrlen, txd->flags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fm10k_dbg_rx_desc_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct fm10k_ring *ring = s->private;
|
|
int i = *(loff_t *)v;
|
|
static const char rx_desc_hdr[] =
|
|
"DES DATA RSS STATERR LENGTH VLAN DGLORT SGLORT TIMESTAMP\n";
|
|
|
|
/* Generate header */
|
|
if (!i) {
|
|
seq_printf(s, rx_desc_hdr);
|
|
fm10k_dbg_desc_break(s, sizeof(rx_desc_hdr) - 1);
|
|
}
|
|
|
|
/* Validate descriptor allocation */
|
|
if (!ring->desc) {
|
|
seq_printf(s, "%03X Descriptor ring not allocated.\n", i);
|
|
} else {
|
|
union fm10k_rx_desc *rxd = FM10K_RX_DESC(ring, i);
|
|
|
|
seq_printf(s,
|
|
"%03X %#010x %#010x %#010x %#06x %#06x %#06x %#06x %#018llx\n",
|
|
i, rxd->d.data, rxd->d.rss, rxd->d.staterr,
|
|
rxd->w.length, rxd->w.vlan, rxd->w.dglort,
|
|
rxd->w.sglort, rxd->q.timestamp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations fm10k_dbg_tx_desc_seq_ops = {
|
|
.start = fm10k_dbg_desc_seq_start,
|
|
.next = fm10k_dbg_desc_seq_next,
|
|
.stop = fm10k_dbg_desc_seq_stop,
|
|
.show = fm10k_dbg_tx_desc_seq_show,
|
|
};
|
|
|
|
static const struct seq_operations fm10k_dbg_rx_desc_seq_ops = {
|
|
.start = fm10k_dbg_desc_seq_start,
|
|
.next = fm10k_dbg_desc_seq_next,
|
|
.stop = fm10k_dbg_desc_seq_stop,
|
|
.show = fm10k_dbg_rx_desc_seq_show,
|
|
};
|
|
|
|
static int fm10k_dbg_desc_open(struct inode *inode, struct file *filep)
|
|
{
|
|
struct fm10k_ring *ring = inode->i_private;
|
|
struct fm10k_q_vector *q_vector = ring->q_vector;
|
|
const struct seq_operations *desc_seq_ops;
|
|
int err;
|
|
|
|
if (ring < q_vector->rx.ring)
|
|
desc_seq_ops = &fm10k_dbg_tx_desc_seq_ops;
|
|
else
|
|
desc_seq_ops = &fm10k_dbg_rx_desc_seq_ops;
|
|
|
|
err = seq_open(filep, desc_seq_ops);
|
|
if (err)
|
|
return err;
|
|
|
|
((struct seq_file *)filep->private_data)->private = ring;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct file_operations fm10k_dbg_desc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = fm10k_dbg_desc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/**
|
|
* fm10k_dbg_q_vector_init - setup debugfs for the q_vectors
|
|
* @q_vector: q_vector to allocate directories for
|
|
*
|
|
* A folder is created for each q_vector found. In each q_vector
|
|
* folder, a debugfs file is created for each tx and rx ring
|
|
* allocated to the q_vector.
|
|
**/
|
|
void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector)
|
|
{
|
|
struct fm10k_intfc *interface = q_vector->interface;
|
|
char name[16];
|
|
int i;
|
|
|
|
if (!interface->dbg_intfc)
|
|
return;
|
|
|
|
/* Generate a folder for each q_vector */
|
|
snprintf(name, sizeof(name), "q_vector.%03d", q_vector->v_idx);
|
|
|
|
q_vector->dbg_q_vector = debugfs_create_dir(name, interface->dbg_intfc);
|
|
if (!q_vector->dbg_q_vector)
|
|
return;
|
|
|
|
/* Generate a file for each rx ring in the q_vector */
|
|
for (i = 0; i < q_vector->tx.count; i++) {
|
|
struct fm10k_ring *ring = &q_vector->tx.ring[i];
|
|
|
|
snprintf(name, sizeof(name), "tx_ring.%03d", ring->queue_index);
|
|
|
|
debugfs_create_file(name, 0600,
|
|
q_vector->dbg_q_vector, ring,
|
|
&fm10k_dbg_desc_fops);
|
|
}
|
|
|
|
/* Generate a file for each rx ring in the q_vector */
|
|
for (i = 0; i < q_vector->rx.count; i++) {
|
|
struct fm10k_ring *ring = &q_vector->rx.ring[i];
|
|
|
|
snprintf(name, sizeof(name), "rx_ring.%03d", ring->queue_index);
|
|
|
|
debugfs_create_file(name, 0600,
|
|
q_vector->dbg_q_vector, ring,
|
|
&fm10k_dbg_desc_fops);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fm10k_dbg_free_q_vector_dir - setup debugfs for the q_vectors
|
|
* @q_vector: q_vector to allocate directories for
|
|
**/
|
|
void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector)
|
|
{
|
|
struct fm10k_intfc *interface = q_vector->interface;
|
|
|
|
if (interface->dbg_intfc)
|
|
debugfs_remove_recursive(q_vector->dbg_q_vector);
|
|
q_vector->dbg_q_vector = NULL;
|
|
}
|
|
|
|
/**
|
|
* fm10k_dbg_intfc_init - setup the debugfs directory for the intferface
|
|
* @interface: the interface that is starting up
|
|
**/
|
|
|
|
void fm10k_dbg_intfc_init(struct fm10k_intfc *interface)
|
|
{
|
|
const char *name = pci_name(interface->pdev);
|
|
|
|
if (dbg_root)
|
|
interface->dbg_intfc = debugfs_create_dir(name, dbg_root);
|
|
}
|
|
|
|
/**
|
|
* fm10k_dbg_intfc_exit - clean out the interface's debugfs entries
|
|
* @interface: the interface that is stopping
|
|
**/
|
|
void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface)
|
|
{
|
|
if (dbg_root)
|
|
debugfs_remove_recursive(interface->dbg_intfc);
|
|
interface->dbg_intfc = NULL;
|
|
}
|
|
|
|
/**
|
|
* fm10k_dbg_init - start up debugfs for the driver
|
|
**/
|
|
void fm10k_dbg_init(void)
|
|
{
|
|
dbg_root = debugfs_create_dir(fm10k_driver_name, NULL);
|
|
}
|
|
|
|
/**
|
|
* fm10k_dbg_exit - clean out the driver's debugfs entries
|
|
**/
|
|
void fm10k_dbg_exit(void)
|
|
{
|
|
debugfs_remove_recursive(dbg_root);
|
|
dbg_root = NULL;
|
|
}
|