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authorChuck Lever2016-03-01 13:05:27 -0500
committerJ. Bruce Fields2016-03-01 13:06:32 -0800
commit4ce85c8cf8a8ecfff932642cf20677d7efc90ad3 (patch)
treed34d4028bebcf0f0dec7b65240e01581571f92b9 /fs/nfsd
parent8edf4b028818336ccff7dff5ef60b3d81fac5380 (diff)
nfsd: Update NFS server comments related to RDMA support
The server does indeed now support NFSv4.1 on RDMA transports. It does not support shifting an RDMA-capable TCP transport (such as iWARP) to RDMA mode. Reported-by: Shirley Ma <shirley.ma@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c5
-rw-r--r--fs/nfsd/nfs4xdr.c2
2 files changed, 3 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9d20c6a54734..d4b0b789ea24 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2711,10 +2711,9 @@ nfsd4_create_session(struct svc_rqst *rqstp,
goto out_free_conn;
}
status = nfs_ok;
- /*
- * We do not support RDMA or persistent sessions
- */
+ /* Persistent sessions are not supported */
cr_ses->flags &= ~SESSION4_PERSIST;
+ /* Upshifting from TCP to RDMA is not supported */
cr_ses->flags &= ~SESSION4_RDMA;
init_session(rqstp, new, conf, cr_ses);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 1600ec470ce7..aa87954b4af2 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3063,7 +3063,7 @@ static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp,
p = xdr_encode_opaque_fixed(p, bcts->sessionid.data,
NFS4_MAX_SESSIONID_LEN);
*p++ = cpu_to_be32(bcts->dir);
- /* Sorry, we do not yet support RDMA over 4.1: */
+ /* Upshifting from TCP to RDMA is not supported */
*p++ = cpu_to_be32(0);
}
return nfserr;