From: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Signed-off-by: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Signed-off-by: Tom Haynes <Thomas.Haynes@xxxxxxxxxxxxxxx>
---
fs/nfs/pnfs_dev.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 51 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c
index 56f5c16..655333d 100644
--- a/fs/nfs/pnfs_dev.c
+++ b/fs/nfs/pnfs_dev.c
@@ -615,7 +615,44 @@ static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds)
wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING);
}
-static int _nfs4_pnfs_ds_connect(struct nfs_server *mds_srv,
+static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
+ struct nfs4_pnfs_ds *ds,
+ unsigned int timeo,
+ unsigned int retrans,
+ rpc_authflavor_t au_flavor)
+{
+ struct nfs_client *clp = ERR_PTR(-EIO);
+ struct nfs4_pnfs_ds_addr *da;
+ int status = 0;
+
+ dprintk("--> %s DS %s au_flavor %d\n", __func__,
+ ds->ds_remotestr, au_flavor);
+
+ list_for_each_entry(da, &ds->ds_addrs, da_node) {
+ dprintk("%s: DS %s: trying address %s\n",
+ __func__, ds->ds_remotestr, da->da_remotestr);
+
+ clp = nfs3_set_ds_client(mds_srv->nfs_client,
+ (struct sockaddr *)&da->da_addr,
+ da->da_addrlen, IPPROTO_TCP,
+ timeo, retrans, au_flavor);
+ if (!IS_ERR(clp))
+ break;
+ }
+
+ if (IS_ERR(clp)) {
+ status = PTR_ERR(clp);
+ goto out;
+ }
+
+ smp_wmb();
+ ds->ds_clp = clp;
+ dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr);
+out:
+ return status;
+}
+
+static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv,
struct nfs4_pnfs_ds *ds,
unsigned int timeo,
unsigned int retrans,
@@ -674,8 +711,19 @@ void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) {
int err = 0;
- err = _nfs4_pnfs_ds_connect(mds_srv, ds, timeo, retrans,
- minor_version, au_flavor);
+ if (version == 3) {
+ err = _nfs4_pnfs_v3_ds_connect(mds_srv, ds, timeo,
+ retrans, au_flavor);
+ } else if (version == 4) {
+ err = _nfs4_pnfs_v4_ds_connect(mds_srv, ds, timeo,
+ retrans, minor_version,
+ au_flavor);
+ } else {
+ dprintk("%s: unsupported DS version %d\n", __func__,
+ version);
+ err = -EPROTONOSUPPORT;
+ }
+
if (err)
nfs4_mark_deviceid_unavailable(devid);
nfs4_clear_ds_conn_bit(ds);
--
1.9.3
--
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