github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-13 16:59:27 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

net/mlx5: SD, Add debugfs

Browse Source 
Add debugfs entries that describe the Socket-Direct group.

Example:
$ grep -H . /sys/kernel/debug/mlx5/0000\:08\:00.0/multi-pf/*
/sys/kernel/debug/mlx5/0000:08:00.0/multi-pf/group_id:0x00000101
/sys/kernel/debug/mlx5/0000:08:00.0/multi-pf/primary:0000:08:00.0 vhca 0x0
/sys/kernel/debug/mlx5/0000:08:00.0/multi-pf/secondary_0:0000:09:00.0 vhca 0x2

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Tariq Toukan 2024-02-14 19:08:06 -08:00 committed by Saeed Mahameed
parent ae40550e3a
commit 4375130bf5
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c
View File

@ -6,6 +6,7 @@
#include "lib/mlx5.h"
#include "fs_cmd.h"
#include <linux/mlx5/vport.h>
#include <linux/debugfs.h>
#define sd_info(__dev, format, ...) \
dev_info((__dev)->device, "Socket-Direct: " format, ##__VA_ARGS__)
@ -16,6 +17,7 @@ struct mlx5_sd {
u32 group_id;
u8 host_buses;
struct mlx5_devcom_comp_dev *devcom;
struct dentry *dfs;
bool primary;
union {
struct { /* primary */
@ -391,6 +393,26 @@ static void sd_print_group(struct mlx5_core_dev *primary)
MLX5_CAP_GEN(pos, vhca_id));
}
static ssize_t dev_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct mlx5_core_dev *dev;
char tbuf[32];
int ret;
dev = filp->private_data;
ret = snprintf(tbuf, sizeof(tbuf), "%s vhca %#x\n", pci_name(dev->pdev),
MLX5_CAP_GEN(dev, vhca_id));
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
static const struct file_operations dev_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = dev_read,
};
int mlx5_sd_init(struct mlx5_core_dev *dev)
{
struct mlx5_core_dev *primary, *pos, *to;
@ -422,10 +444,20 @@ int mlx5_sd_init(struct mlx5_core_dev *dev)
if (err)
goto err_sd_unregister;
sd->dfs = debugfs_create_dir("multi-pf", mlx5_debugfs_get_dev_root(primary));
debugfs_create_x32("group_id", 0400, sd->dfs, &sd->group_id);
debugfs_create_file("primary", 0400, sd->dfs, primary, &dev_fops);
mlx5_sd_for_each_secondary(i, primary, pos) {
char name[32];
err = sd_cmd_set_secondary(pos, primary, alias_key);
if (err)
goto err_unset_secondaries;
snprintf(name, sizeof(name), "secondary_%d", i - 1);
debugfs_create_file(name, 0400, sd->dfs, pos, &dev_fops);
}
sd_info(primary, "group id %#x, size %d, combined\n",
@ -439,6 +471,7 @@ int mlx5_sd_init(struct mlx5_core_dev *dev)
mlx5_sd_for_each_secondary_to(i, primary, to, pos)
sd_cmd_unset_secondary(pos);
sd_cmd_unset_primary(primary);
debugfs_remove_recursive(sd->dfs);
err_sd_unregister:
sd_unregister(dev);
err_sd_cleanup:
@ -462,6 +495,7 @@ void mlx5_sd_cleanup(struct mlx5_core_dev *dev)
mlx5_sd_for_each_secondary(i, primary, pos)
sd_cmd_unset_secondary(pos);
sd_cmd_unset_primary(primary);
debugfs_remove_recursive(sd->dfs);
sd_info(primary, "group id %#x, uncombined\n", sd->group_id);
out: