nfsd: New counter for generating client confirm verifier

If using clientid_counter, it seems possible that gen_confirm could
generate the same verifier for the same client in some situations.

Add a new counter for client confirm verifier to make sure gen_confirm
generates a different verifier on each call for the same clientid.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index ea6749a32760..d8b16c2568f3 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -110,6 +110,7 @@ struct nfsd_net {
 	unsigned int max_connections;
 
 	u32 clientid_counter;
+	u32 clverifier_counter;
 
 	struct svc_serv *nfsd_serv;
 };