From 4ce85c8cf8a8ecfff932642cf20677d7efc90ad3 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 1 Mar 2016 13:05:27 -0500 Subject: [PATCH] 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 Signed-off-by: Chuck Lever Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 5 ++--- fs/nfsd/nfs4xdr.c | 2 +- 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; -- 2.39.2