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nfsd: Update NFS server comments related to RDMA support

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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>
This commit is contained in:
Chuck Lever 2016-03-01 13:05:27 -05:00 committed by J. Bruce Fields
parent 8edf4b0288
commit 4ce85c8cf8
2 changed files with 3 additions and 4 deletions
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5
fs/nfsd/nfs4state.c
View file

@ -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);

2
fs/nfsd/nfs4xdr.c
View file

@ -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;