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authorSantosh kumar pradhan <santoshkumar.pradhan@wdc.com>2018-12-19 06:59:57 (GMT)
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-01-02 17:05:19 (GMT)
commit10e037d1e0d5d93cc057e4fad6911e481a462407 (patch)
tree5826e59131a9a00b58ab16a65316c47a808e7907 /fs
parentcb24e35b4fa8448e7ee963884958235b8de44f25 (diff)
sunrpc: Add xprt after nfs4_test_session_trunk()
Multipathing: In case of NFSv3, rpc_clnt_test_and_add_xprt() adds the xprt to xprt switch (i.e. xps) if rpc_call_null_helper() returns success. But in case of NFSv4.1, it needs to do EXCHANGEID to verify the path along with check for session trunking. Add the xprt in nfs4_test_session_trunk() only when nfs4_detect_session_trunking() returns success. Also release refcount hold by rpc_clnt_setup_test_and_add_xprt(). Signed-off-by: Santosh kumar pradhan <santoshkumar.pradhan@wdc.com> Tested-by: Suresh Jayaraman <suresh.jayaraman@wdc.com> Reported-by: Aditya Agnihotri <aditya.agnihotri@wdc.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/internal.h6
-rw-r--r--fs/nfs/nfs4_fs.h3
-rw-r--r--fs/nfs/nfs4proc.c8
3 files changed, 10 insertions, 7 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 78d83b4..7f80f03 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -568,9 +568,9 @@ extern int nfs40_walk_client_list(struct nfs_client *clp,
extern int nfs41_walk_client_list(struct nfs_client *clp,
struct nfs_client **result,
const struct cred *cred);
-extern int nfs4_test_session_trunk(struct rpc_clnt *,
- struct rpc_xprt *,
- void *);
+extern void nfs4_test_session_trunk(struct rpc_clnt *clnt,
+ struct rpc_xprt *xprt,
+ void *data);
static inline struct inode *nfs_igrab_and_active(struct inode *inode)
{
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 993378a..06ac3d9a 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -65,7 +65,8 @@ struct nfs4_minor_version_ops {
nfs4_stateid *, const struct cred *);
struct nfs_seqid *
(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
- int (*session_trunk)(struct rpc_clnt *, struct rpc_xprt *, void *);
+ void (*session_trunk)(struct rpc_clnt *clnt,
+ struct rpc_xprt *xprt, void *data);
const struct rpc_call_ops *call_sync_ops;
const struct nfs4_state_recovery_ops *reboot_recovery_ops;
const struct nfs4_state_recovery_ops *nograce_recovery_ops;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7d1f080..72961b5 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -8082,7 +8082,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred)
* @xprt: the rpc_xprt to test
* @data: call data for _nfs4_proc_exchange_id.
*/
-int nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt,
+void nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt,
void *data)
{
struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data;
@@ -8099,15 +8099,17 @@ int nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt,
/* Test connection for session trunking. Async exchange_id call */
task = nfs4_run_exchange_id(adata->clp, adata->cred, sp4_how, xprt);
if (IS_ERR(task))
- return PTR_ERR(task);
+ return;
status = task->tk_status;
if (status == 0)
status = nfs4_detect_session_trunking(adata->clp,
task->tk_msg.rpc_resp, xprt);
+ if (status == 0)
+ rpc_clnt_xprt_switch_add_xprt(clnt, xprt);
+
rpc_put_task(task);
- return status;
}
EXPORT_SYMBOL_GPL(nfs4_test_session_trunk);

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