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nfsd4: Expose the callback address and state of each NFS4 client

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[ Upstream commit 3518c8666f15cdd5d38878005dab1d589add1c19 ]

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>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dave Wysochanski 2021-06-02 13:51:39 -04:00 committed by Greg Kroah-Hartman
parent dbc0aa4795
commit 22b7c93d96
1 changed files with 17 additions and 0 deletions
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17
fs/nfsd/nfs4state.c
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@ -2376,6 +2376,21 @@ 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;
@ -2404,6 +2419,8 @@ 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;