NFS: Add nfs_client behavior flags

"noresvport" and "discrtry" can be passed to nfs_create_rpc_client()
by setting flags in the passed-in nfs_client.  This change makes it
easy to add new flags.

Note that these settings are now "sticky" over the lifetime of a
struct nfs_client, and may even be copied when an nfs_client is
cloned.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index fbec57d6dc0a..3a99f5252340 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -35,6 +35,9 @@ struct nfs_client {
 #define NFS_CS_RENEWD           3               /* - renewd started */
 #define NFS_CS_STOP_RENEW       4               /* no more state to renew */
 #define NFS_CS_CHECK_LEASE_TIME 5               /* need to check lease time */
+        unsigned long           cl_flags;       /* behavior switches */
+#define NFS_CS_NORESVPORT       0               /* - use ephemeral src port */
+#define NFS_CS_DISCRTRY         1               /* - disconnect on RPC retry */
         struct sockaddr_storage cl_addr;        /* server identifier */
         size_t                  cl_addrlen;
         char *                  cl_hostname;    /* hostname of server */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 0c521cd496a7..07048c012dec 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1399,7 +1399,7 @@ struct nfs_rpc_ops {
                                 struct iattr *iattr);
         struct nfs_client *
                 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
-                                const char *, rpc_authflavor_t, int);
+                                const char *, rpc_authflavor_t);
 };
 
 /*