diff options
Diffstat (limited to 'fs/nfsd/nfs4state.c')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index c484a2b6c..0462eeddf 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2408,7 +2408,8 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, default: /* checked by xdr code */ WARN_ON_ONCE(1); case SP4_SSV: - return nfserr_encr_alg_unsupp; + status = nfserr_encr_alg_unsupp; + goto out_nolock; } /* Cases below refer to rfc 5661 section 18.35.4: */ @@ -2586,21 +2587,26 @@ static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs *ca, struct nfs return nfs_ok; } +/* + * Server's NFSv4.1 backchannel support is AUTH_SYS-only for now. + * These are based on similar macros in linux/sunrpc/msg_prot.h . + */ +#define RPC_MAX_HEADER_WITH_AUTH_SYS \ + (RPC_CALLHDRSIZE + 2 * (2 + UNX_CALLSLACK)) + +#define RPC_MAX_REPHEADER_WITH_AUTH_SYS \ + (RPC_REPHDRSIZE + (2 + NUL_REPLYSLACK)) + #define NFSD_CB_MAX_REQ_SZ ((NFS4_enc_cb_recall_sz + \ - RPC_MAX_HEADER_WITH_AUTH) * sizeof(__be32)) + RPC_MAX_HEADER_WITH_AUTH_SYS) * sizeof(__be32)) #define NFSD_CB_MAX_RESP_SZ ((NFS4_dec_cb_recall_sz + \ - RPC_MAX_REPHEADER_WITH_AUTH) * sizeof(__be32)) + RPC_MAX_REPHEADER_WITH_AUTH_SYS) * \ + sizeof(__be32)) static __be32 check_backchannel_attrs(struct nfsd4_channel_attrs *ca) { ca->headerpadsz = 0; - /* - * These RPC_MAX_HEADER macros are overkill, especially since we - * don't even do gss on the backchannel yet. But this is still - * less than 1k. Tighten up this estimate in the unlikely event - * it turns out to be a problem for some client: - */ if (ca->maxreq_sz < NFSD_CB_MAX_REQ_SZ) return nfserr_toosmall; if (ca->maxresp_sz < NFSD_CB_MAX_RESP_SZ) @@ -2710,10 +2716,9 @@ 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); |