From 2449ea2e191123729b2dc37a06fcb9d6ea7e2736 Mon Sep 17 00:00:00 2001 From: Alexandros Batsakis Date: Sat, 5 Dec 2009 13:36:55 -0500 Subject: [PATCH] nfs41: V2 adjust max_rqst_sz, max_resp_sz w.r.t to rsize, wsize The v4.1 client should take into account the desired rsize, wsize when negotiating the max size in CREATE_SESSION. Accordingly, it should use rsize, wsize that are smaller than the session negotiated values. Signed-off-by: Alexandros Batsakis Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 14 ++++++++++++-- fs/nfs/internal.h | 4 ++++ fs/nfs/nfs4proc.c | 7 +++++-- fs/nfs/nfs4xdr.c | 14 ++++++++++++++ 4 files changed, 35 insertions(+), 4 deletions(-) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 99ea196f071f..ee77713ce68b 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1260,10 +1260,20 @@ error: static void nfs4_session_set_rwsize(struct nfs_server *server) { #ifdef CONFIG_NFS_V4_1 + struct nfs4_session *sess; + u32 server_resp_sz; + u32 server_rqst_sz; + if (!nfs4_has_session(server->nfs_client)) return; - server->rsize = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - server->wsize = server->nfs_client->cl_session->fc_attrs.max_rqst_sz; + sess = server->nfs_client->cl_session; + server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead; + server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead; + + if (server->rsize > server_resp_sz) + server->rsize = server_resp_sz; + if (server->wsize > server_rqst_sz) + server->wsize = server_rqst_sz; #endif /* CONFIG_NFS_V4_1 */ } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 7466d24893f7..83a9284b83c7 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -191,6 +191,10 @@ extern __be32 *nfs3_decode_dirent(__be32 *, struct nfs_entry *, int); #ifdef CONFIG_NFS_V4 extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus); #endif +#ifdef CONFIG_NFS_V4_1 +extern const u32 nfs41_maxread_overhead; +extern const u32 nfs41_maxwrite_overhead; +#endif /* nfs4proc.c */ extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index dfd1ea99e2d6..d897b9e34f12 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4862,13 +4862,16 @@ int nfs4_proc_destroy_session(struct nfs4_session *session) int nfs4_init_session(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; + struct nfs4_session *session; int ret; if (!nfs4_has_session(clp)) return 0; - clp->cl_session->fc_attrs.max_rqst_sz = server->wsize; - clp->cl_session->fc_attrs.max_resp_sz = server->rsize; + session = clp->cl_session; + session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead; + session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead; + ret = nfs4_recover_expired_lease(server); if (!ret) ret = nfs4_check_client_ready(clp); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 0b1f3fcdd28a..4ddd04a1113e 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -46,6 +46,7 @@ #include #include #include +#include #include #include #include @@ -677,6 +678,19 @@ static int nfs4_stat_to_errno(int); decode_sequence_maxsz + \ decode_putrootfh_maxsz + \ decode_fsinfo_maxsz) + +const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + + compound_encode_hdr_maxsz + + encode_sequence_maxsz + + encode_putfh_maxsz + + encode_getattr_maxsz) * + XDR_UNIT); + +const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + + compound_decode_hdr_maxsz + + decode_sequence_maxsz + + decode_putfh_maxsz) * + XDR_UNIT); #endif /* CONFIG_NFS_V4_1 */ static const umode_t nfs_type2fmt[] = { -- 2.20.1