From fc931582c260e53ca5ca23bd70ccc9b2265cca9f Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Wed, 1 Apr 2009 09:22:31 -0400 Subject: nfs41: create_session operation Implement the create_session operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Set the real fore channel max operations to preserve server resources. Note: If the server returns < NFS4_MAX_OPS, the client will very soon get an NFS4ERR_TOO_MANY_OPS. A later patch will handle this. Set the max_rqst_sz and max_resp_sz to PAGE_SIZE - we preallocate the buffers. Set the back channel max_resp_sz_cached to zero to force the client to always set csa_cachethis to FALSE because the current implementation of the back channel DRC only supports caching the CB_SEQUENCE operation. The client back channel server supports one slot, and desires 2 operations per compound. Signed-off-by: Ricardo Labiaga Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: remove extraneous rpc_clnt pointer] Use the struct nfs_client cl_rpcclient. Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: nfs4_init_channel_attrs, just use nfs41_create_session_args] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: use rsize and wsize for session channel attributes] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: set channel max operations] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: set back channel attributes] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: obliterate nfs4_adjust_channel_attrs] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: have create_session work on nfs_client] Signed-off-by: Benny Halevy [nfs41: move CONFIG_NFS_V4_1 endif] Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy [nfs41: pass *session in seq_args and seq_res] [moved nfs4_init_slot_table definition here] Signed-off-by: Benny Halevy [nfs41: use kcalloc to allocate slot table] Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust [nfs41: fix Xcode_create_session's xdr Xcoding pointer type] [nfs41: refactor decoding of channel attributes] Signed-off-by: Benny Halevy --- include/linux/nfs4.h | 10 ++++++++++ include/linux/nfs_xdr.h | 12 ++++++++++++ 2 files changed, 22 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index ad65709ed8d..bd2eba53066 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -131,6 +131,16 @@ #define NFS4_MAX_UINT64 (~(u64)0) +/* An NFS4 sessions server must support at least NFS4_MAX_OPS operations. + * If a compound requires more operations, adjust NFS4_MAX_OPS accordingly. + */ +#define NFS4_MAX_OPS 8 + +/* Our NFS4 client back channel server only wants the cb_sequene and the + * actual operation per compound + */ +#define NFS4_MAX_BACK_CHANNEL_OPS 2 + enum nfs4_acl_whotype { NFS4_ACL_WHO_NAMED = 0, NFS4_ACL_WHO_OWNER, diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ca643aa87d4..62f63fb0c4c 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -926,6 +926,18 @@ struct nfs41_exchange_id_res { struct nfs_client *client; u32 flags; }; + +struct nfs41_create_session_args { + struct nfs_client *client; + uint32_t flags; + uint32_t cb_program; + struct nfs4_channel_attrs fc_attrs; /* Fore Channel */ + struct nfs4_channel_attrs bc_attrs; /* Back Channel */ +}; + +struct nfs41_create_session_res { + struct nfs_client *client; +}; #endif /* CONFIG_NFS_V4_1 */ struct nfs_page; -- cgit v1.2.3-70-g09d2