aboutsummaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
authorChuck Lever <chuck.lever@oracle.com>2018-12-19 15:59:12 (GMT)
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-01-02 17:05:17 (GMT)
commit0dfbb5f05e7888903e7e1da6c2c4aa017ee1a207 (patch)
tree3a1c7353352e32d4f08d179e4af96966c2c3de97 /fs
parent0a93fbcb16e6b1f36780f9a20d6427f26cec761d (diff)
NFS: Make "port=" mount option optional for RDMA mounts
Having to specify "proto=rdma,port=20049" is cumbersome. RFC 8267 Section 6.3 requires NFSv4 clients to use "the alternative well-known port number", which is 20049. Make the use of the well- known port number automatic, just as it is for NFS/TCP and port 2049. For NFSv2/3, Section 4.2 allows clients to simply choose 20049 as the default or use rpcbind. I don't know of an NFS/RDMA server implementation that registers it's NFS/RDMA service with rpcbind, so automatically choosing 20049 seems like the better choice. The other widely-deployed NFS/RDMA client, Solaris, also uses 20049 as the default port. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/super.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 5ef2c71..7c942462 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2168,7 +2168,10 @@ static int nfs_validate_text_mount_data(void *options,
if (args->version == 4) {
#if IS_ENABLED(CONFIG_NFS_V4)
- port = NFS_PORT;
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ port = NFS_RDMA_PORT;
+ else
+ port = NFS_PORT;
max_namelen = NFS4_MAXNAMLEN;
max_pathlen = NFS4_MAXPATHLEN;
nfs_validate_transport_protocol(args);
@@ -2178,8 +2181,11 @@ static int nfs_validate_text_mount_data(void *options,
#else
goto out_v4_not_compiled;
#endif /* CONFIG_NFS_V4 */
- } else
+ } else {
nfs_set_mount_transport_protocol(args);
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ port = NFS_RDMA_PORT;
+ }
nfs_set_port(sap, &args->nfs_server.port, port);

Privacy Policy