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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-12-19 10:59:12 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-01-02 12:05:17 -0500 |
| commit | 0dfbb5f05e7888903e7e1da6c2c4aa017ee1a207 (patch) | |
| tree | 3a1c7353352e32d4f08d179e4af96966c2c3de97 | |
| parent | 0a93fbcb16e6b1f36780f9a20d6427f26cec761d (diff) | |
| download | linux-0dfbb5f05e7888903e7e1da6c2c4aa017ee1a207.tar.bz2 | |
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>
| -rw-r--r-- | fs/nfs/super.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 5ef2c71348bd..7c942462d8c6 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); |