return status;
}
+/* Reset a slot table */
+static int nfs4_reset_slot_table(struct nfs4_session *session)
+{
+ struct nfs4_slot_table *tbl = &session->fc_slot_table;
+ int i, max_slots = session->fc_attrs.max_reqs;
+ int old_max_slots = session->fc_slot_table.max_slots;
+ int ret = 0;
+
+ dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__,
+ session->fc_attrs.max_reqs, tbl);
+
+ /* Until we have dynamic slot table adjustment, insist
+ * upon the same slot table size */
+ if (max_slots != old_max_slots) {
+ dprintk("%s reset slot table does't match old\n",
+ __func__);
+ ret = -EINVAL; /*XXX NFS4ERR_REQ_TOO_BIG ? */
+ goto out;
+ }
+ spin_lock(&tbl->slot_tbl_lock);
+ for (i = 0; i < max_slots; ++i)
+ tbl->slots[i].seq_nr = 1;
+ tbl->highest_used_slotid = -1;
+ spin_unlock(&tbl->slot_tbl_lock);
+ dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
+ tbl, tbl->slots, tbl->max_slots);
+out:
+ dprintk("<-- %s: return %d\n", __func__, ret);
+ return ret;
+}
+
/*
* Initialize slot table
*/
session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL);
if (!session)
return NULL;
+
+ set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
+ /*
+ * The create session reply races with the server back
+ * channel probe. Mark the client NFS_CS_SESSION_INITING
+ * so that the client back channel can find the
+ * nfs_client struct
+ */
+ clp->cl_cons_state = NFS_CS_SESSION_INITING;
+
tbl = &session->fc_slot_table;
spin_lock_init(&tbl->slot_tbl_lock);
rpc_init_wait_queue(&tbl->slot_tbl_waitq, "Slot table");
* It is the responsibility of the caller to verify the session is
* expired before calling this routine.
*/
-int nfs4_proc_create_session(struct nfs_client *clp)
+int nfs4_proc_create_session(struct nfs_client *clp, int reset)
{
int status;
unsigned *ptr;
if (status)
goto out;
- /* Init the fore channel */
- status = nfs4_init_slot_table(session);
+ /* Init or reset the fore channel */
+ if (reset)
+ status = nfs4_reset_slot_table(session);
+ else
+ status = nfs4_init_slot_table(session);
dprintk("fore channel slot table initialization returned %d\n", status);
if (status)
goto out;
dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
+ if (reset)
+ /* Lease time is aleady set */
+ goto out;
+
/* Get the lease time */
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
return status;
}
+/*
+ * Renew the cl_session lease.
+ */
+static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
+{
+ struct nfs4_sequence_args args;
+ struct nfs4_sequence_res res;
+
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ .rpc_cred = cred,
+ };
+
+ args.sa_cache_this = 0;
+
+ return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args,
+ &res, 0);
+}
+
+void nfs41_sequence_call_done(struct rpc_task *task, void *data)
+{
+ struct nfs_client *clp = (struct nfs_client *)data;
+
+ nfs41_sequence_done(clp, task->tk_msg.rpc_resp, task->tk_status);
+
+ if (task->tk_status < 0) {
+ dprintk("%s ERROR %d\n", __func__, task->tk_status);
+
+ if (_nfs4_async_handle_error(task, NULL, clp, NULL)
+ == -EAGAIN) {
+ rpc_restart_call(task);
+ return;
+ }
+ }
+ nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
+ dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
+
+ put_rpccred(task->tk_msg.rpc_cred);
+ kfree(task->tk_msg.rpc_argp);
+ kfree(task->tk_msg.rpc_resp);
+
+ dprintk("<-- %s\n", __func__);
+}
+
+static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
+{
+ struct nfs_client *clp;
+ struct nfs4_sequence_args *args;
+ struct nfs4_sequence_res *res;
+
+ clp = (struct nfs_client *)data;
+ args = task->tk_msg.rpc_argp;
+ res = task->tk_msg.rpc_resp;
+
+ if (nfs4_setup_sequence(clp, args, res, 0, task))
+ return;
+ rpc_call_start(task);
+}
+
+static const struct rpc_call_ops nfs41_sequence_ops = {
+ .rpc_call_done = nfs41_sequence_call_done,
+ .rpc_call_prepare = nfs41_sequence_prepare,
+};
+
+static int nfs41_proc_async_sequence(struct nfs_client *clp,
+ struct rpc_cred *cred)
+{
+ struct nfs4_sequence_args *args;
+ struct nfs4_sequence_res *res;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
+ .rpc_cred = cred,
+ };
+
+ args = kzalloc(sizeof(*args), GFP_KERNEL);
+ if (!args)
+ return -ENOMEM;
+ res = kzalloc(sizeof(*res), GFP_KERNEL);
+ if (!res) {
+ kfree(args);
+ return -ENOMEM;
+ }
+ res->sr_slotid = NFS4_MAX_SLOT_TABLE;
+ msg.rpc_argp = args;
+ msg.rpc_resp = res;
+
+ return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
+ &nfs41_sequence_ops, (void *)clp);
+}
+
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = {
git.openpandora.org / pandora-kernel.git / blobdiff