diff options
| author |   Tariq Toukan <tariqt@nvidia.com> | 2024-02-14 19:08:06 -0800 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@nvidia.com> | 2024-03-07 00:40:39 -0800 |
| commit | 4375130bf527053ef2c1619921af4ceb2cb53172 (patch) | |
| tree | 04dd3651888f373b045b2b1e30b90d550f76dfda /drivers/net/ethernet/mellanox/mlx5 | |
| parent | net/mlx5: SD, Add informative prints in kernel log (diff) | |
| download | wireguard-linux-4375130bf527053ef2c1619921af4ceb2cb53172.tar.xz wireguard-linux-4375130bf527053ef2c1619921af4ceb2cb53172.zip | |
net/mlx5: SD, Add debugfs
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>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c index 918138c13a92..5b28084e8a03 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c @@ -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 @@ err_unset_secondaries: 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: |