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authorDave Wysochanski <dwysocha@redhat.com>2021-06-02 13:51:39 -0400
committerJ. Bruce Fields <bfields@redhat.com>2021-07-06 20:14:41 -0400
commit3518c8666f15cdd5d38878005dab1d589add1c19 (patch)
treeb020f59e9560694e6100856f38c92c10ef30df67 /fs/nfsd
parentd50295255e787a142a1329d53c7c410227ceaac2 (diff)
nfsd4: Expose the callback address and state of each NFS4 client
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>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c01ecb7b3fd3..6c64ce93510f 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;