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[v3,1/1] nfsd4: Expose the callback address and state of each NFS4 client

Message ID 20210602175139.436357-2-dwysocha@redhat.com (mailing list archive)
State New
Headers show
Series Add callback address and state to nfsd4 client info | expand

Commit Message

David Wysochanski June 2, 2021, 5:51 p.m. UTC
In addition to the client's address, display the callback channel
state and address in the 'info' file.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4state.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Comments

J. Bruce Fields June 2, 2021, 7:33 p.m. UTC | #1
Thanks, applied.--b.

On Wed, Jun 02, 2021 at 01:51:39PM -0400, Dave Wysochanski wrote:
> In addition to the client's address, display the callback channel
> state and address in the 'info' file.
> 
> Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
> ---
>  fs/nfsd/nfs4state.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index c404c6ec52af..967912b4a7dd 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -2358,6 +2358,21 @@ static void seq_quote_mem(struct seq_file *m, char *data, int len)
>  	seq_printf(m, "\"");
>  }
>  
> +static const char *cb_state2str(int state)
> +{
> +	switch (state) {
> +	case NFSD4_CB_UP:
> +		return "UP";
> +	case NFSD4_CB_UNKNOWN:
> +		return "UNKNOWN";
> +	case NFSD4_CB_DOWN:
> +		return "DOWN";
> +	case NFSD4_CB_FAULT:
> +		return "FAULT";
> +	}
> +	return "UNDEFINED";
> +}
> +
>  static int client_info_show(struct seq_file *m, void *v)
>  {
>  	struct inode *inode = m->private;
> @@ -2386,6 +2401,8 @@ static int client_info_show(struct seq_file *m, void *v)
>  		seq_printf(m, "\nImplementation time: [%lld, %ld]\n",
>  			clp->cl_nii_time.tv_sec, clp->cl_nii_time.tv_nsec);
>  	}
> +	seq_printf(m, "callback state: %s\n", cb_state2str(clp->cl_cb_state));
> +	seq_printf(m, "callback address: %pISpc\n", &clp->cl_cb_conn.cb_addr);
>  	drop_client(clp);
>  
>  	return 0;
> -- 
> 2.31.1
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Patch

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c404c6ec52af..967912b4a7dd 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2358,6 +2358,21 @@  static void seq_quote_mem(struct seq_file *m, char *data, int len)
 	seq_printf(m, "\"");
 }
 
+static const char *cb_state2str(int state)
+{
+	switch (state) {
+	case NFSD4_CB_UP:
+		return "UP";
+	case NFSD4_CB_UNKNOWN:
+		return "UNKNOWN";
+	case NFSD4_CB_DOWN:
+		return "DOWN";
+	case NFSD4_CB_FAULT:
+		return "FAULT";
+	}
+	return "UNDEFINED";
+}
+
 static int client_info_show(struct seq_file *m, void *v)
 {
 	struct inode *inode = m->private;
@@ -2386,6 +2401,8 @@  static int client_info_show(struct seq_file *m, void *v)
 		seq_printf(m, "\nImplementation time: [%lld, %ld]\n",
 			clp->cl_nii_time.tv_sec, clp->cl_nii_time.tv_nsec);
 	}
+	seq_printf(m, "callback state: %s\n", cb_state2str(clp->cl_cb_state));
+	seq_printf(m, "callback address: %pISpc\n", &clp->cl_cb_conn.cb_addr);
 	drop_client(clp);
 
 	return 0;