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    Subject[Patch v4 03/22] CIFS: SMBD: export protocol initial values
    Date
    From: Long Li <longli@microsoft.com>

    Those values can be configured by user. Export them to /proc/fs/cifs.

    Signed-off-by: Long Li <longli@microsoft.com>
    ---
    fs/cifs/cifs_debug.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++
    1 file changed, 70 insertions(+)

    diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
    index 9727e1d..bdc2f38 100644
    --- a/fs/cifs/cifs_debug.c
    +++ b/fs/cifs/cifs_debug.c
    @@ -369,6 +369,52 @@ static const struct file_operations cifs_stats_proc_fops = {
    };
    #endif /* STATS */

    +#define PROC_FILE_DEFINE(name) \
    +static ssize_t name##_write(struct file *file, const char __user *buffer, \
    + size_t count, loff_t *ppos) \
    +{ \
    + int rc; \
    + rc = kstrtoint_from_user(buffer, count, 10, & name ); \
    + if (rc) \
    + return rc; \
    + return count; \
    +} \
    +static int name##_proc_show(struct seq_file *m, void *v) \
    +{ \
    + seq_printf(m, "%d\n", name ); \
    + return 0; \
    +} \
    +static int name##_open(struct inode *inode, struct file *file) \
    +{ \
    + return single_open(file, name##_proc_show, NULL); \
    +} \
    +\
    +static const struct file_operations cifs_##name##_proc_fops = { \
    + .open = name##_open, \
    + .read = seq_read, \
    + .llseek = seq_lseek, \
    + .release = single_release, \
    + .write = name##_write, \
    +}
    +
    +extern int rdma_readwrite_threshold;
    +extern int smbd_max_frmr_depth;
    +extern int smbd_keep_alive_interval;
    +extern int smbd_max_receive_size;
    +extern int smbd_max_fragmented_recv_size;
    +extern int smbd_max_send_size;
    +extern int smbd_send_credit_target;
    +extern int smbd_receive_credit_max;
    +
    +PROC_FILE_DEFINE(rdma_readwrite_threshold);
    +PROC_FILE_DEFINE(smbd_max_frmr_depth);
    +PROC_FILE_DEFINE(smbd_keep_alive_interval);
    +PROC_FILE_DEFINE(smbd_max_receive_size);
    +PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
    +PROC_FILE_DEFINE(smbd_max_send_size);
    +PROC_FILE_DEFINE(smbd_send_credit_target);
    +PROC_FILE_DEFINE(smbd_receive_credit_max);
    +
    static struct proc_dir_entry *proc_fs_cifs;
    static const struct file_operations cifsFYI_proc_fops;
    static const struct file_operations cifs_lookup_cache_proc_fops;
    @@ -396,6 +442,22 @@ cifs_proc_init(void)
    &cifs_security_flags_proc_fops);
    proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
    &cifs_lookup_cache_proc_fops);
    + proc_create("rdma_readwrite_threshold", 0, proc_fs_cifs,
    + &cifs_rdma_readwrite_threshold_proc_fops);
    + proc_create("smbd_max_frmr_depth", 0, proc_fs_cifs,
    + &cifs_smbd_max_frmr_depth_proc_fops);
    + proc_create("smbd_keep_alive_interval", 0, proc_fs_cifs,
    + &cifs_smbd_keep_alive_interval_proc_fops);
    + proc_create("smbd_max_receive_size", 0, proc_fs_cifs,
    + &cifs_smbd_max_receive_size_proc_fops);
    + proc_create("smbd_max_fragmented_recv_size", 0, proc_fs_cifs,
    + &cifs_smbd_max_fragmented_recv_size_proc_fops);
    + proc_create("smbd_max_send_size", 0, proc_fs_cifs,
    + &cifs_smbd_max_send_size_proc_fops);
    + proc_create("smbd_send_credit_target", 0, proc_fs_cifs,
    + &cifs_smbd_send_credit_target_proc_fops);
    + proc_create("smbd_receive_credit_max", 0, proc_fs_cifs,
    + &cifs_smbd_receive_credit_max_proc_fops);
    }

    void
    @@ -413,6 +475,14 @@ cifs_proc_clean(void)
    remove_proc_entry("SecurityFlags", proc_fs_cifs);
    remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
    remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
    + remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
    + remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
    + remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
    + remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
    + remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
    + remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
    + remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
    + remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
    remove_proc_entry("fs/cifs", NULL);
    }

    --
    2.7.4
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