nfs41: establish sessions-based clientid

nfsv4.1 clientid is established via EXCHANGE_ID rather than
SETCLIENTID{,_CONFIRM}

This is implemented using a new establish_clid method in
nfs4_state_recovery_ops.

nfs41: establish clientid via exchange id only if cred != NULL

>From 2.6.26 reclaimer() uses machine cred for setting up the client id
therefore it is never expected to be NULL.

Signed-off-by: Rahul Iyer <iyer@netapp.com>
[removed dprintk]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: lease renewal]
[revamped patch for new nfs4_state_manager design]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 38 insertions, 2 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index f862a66e5fb9..dd46339095ce 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4780,19 +4780,41 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp,
 
 #endif /* CONFIG_NFS_V4_1 */
 
-struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = {
+struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
         .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
         .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
         .recover_open   = nfs4_open_reclaim,
         .recover_lock   = nfs4_lock_reclaim,
+        .establish_clid = nfs4_init_clientid,
 };
 
-struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = {
+#if defined(CONFIG_NFS_V4_1)
+struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
+        .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
+        .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
+        .recover_open   = nfs4_open_reclaim,
+        .recover_lock   = nfs4_lock_reclaim,
+        .establish_clid = nfs4_proc_exchange_id,
+};
+#endif /* CONFIG_NFS_V4_1 */
+
+struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
+        .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
+        .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
+        .recover_open   = nfs4_open_expired,
+        .recover_lock   = nfs4_lock_expired,
+        .establish_clid = nfs4_init_clientid,
+};
+
+#if defined(CONFIG_NFS_V4_1)
+struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
         .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
         .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
         .recover_open   = nfs4_open_expired,
         .recover_lock   = nfs4_lock_expired,
+        .establish_clid = nfs4_proc_exchange_id,
 };
+#endif /* CONFIG_NFS_V4_1 */
 
 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
         .sched_state_renewal = nfs4_proc_async_renew,
@@ -4812,6 +4834,20 @@ struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
  * Per minor version reboot and network partition recovery ops
  */
 
+struct nfs4_state_recovery_ops *nfs4_reboot_recovery_ops[] = {
+        &nfs40_reboot_recovery_ops,
+#if defined(CONFIG_NFS_V4_1)
+        &nfs41_reboot_recovery_ops,
+#endif
+};
+
+struct nfs4_state_recovery_ops *nfs4_nograce_recovery_ops[] = {
+        &nfs40_nograce_recovery_ops,
+#if defined(CONFIG_NFS_V4_1)
+        &nfs41_nograce_recovery_ops,
+#endif
+};
+
 struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[] = {
         &nfs40_state_renewal_ops,
 #if defined(CONFIG_NFS_V4_1)