5006a76cca
Eliminate nfs_server::client_sys in favour of nfs_client::cl_rpcclient as we only really need one per server that we're talking to since it doesn't have any security on it. The retransmission management variables are also moved to the common struct as they're required to set up the cl_rpcclient connection. The NFS2/3 client and client_acl connections are thenceforth derived by cloning the cl_rpcclient connection and post-applying the authorisation flavour. The code for setting up the initial common connection has been moved to client.c as nfs_create_rpc_client(). All the NFS program definition tables are also moved there as that's where they're now required rather than super.c. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
#ifndef _NFS_FS_SB
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#define _NFS_FS_SB
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#include <linux/list.h>
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#include <linux/backing-dev.h>
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struct nfs_iostats;
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/*
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* The nfs_client identifies our client state to the server.
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*/
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struct nfs_client {
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atomic_t cl_count;
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int cl_cons_state; /* current construction state (-ve: init error) */
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#define NFS_CS_READY 0 /* ready to be used */
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#define NFS_CS_INITING 1 /* busy initialising */
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int cl_nfsversion; /* NFS protocol version */
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unsigned long cl_res_state; /* NFS resources state */
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#define NFS_CS_RPCIOD 0 /* - rpciod started */
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#define NFS_CS_CALLBACK 1 /* - callback started */
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#define NFS_CS_IDMAP 2 /* - idmap started */
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struct sockaddr_in cl_addr; /* server identifier */
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char * cl_hostname; /* hostname of server */
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struct list_head cl_share_link; /* link in global client list */
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struct list_head cl_superblocks; /* List of nfs_server structs */
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struct rpc_clnt * cl_rpcclient;
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const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
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unsigned long retrans_timeo; /* retransmit timeout */
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unsigned int retrans_count; /* number of retransmit tries */
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#ifdef CONFIG_NFS_V4
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u64 cl_clientid; /* constant */
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nfs4_verifier cl_confirm;
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unsigned long cl_state;
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u32 cl_lockowner_id;
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/*
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* The following rwsem ensures exclusive access to the server
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* while we recover the state following a lease expiration.
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*/
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struct rw_semaphore cl_sem;
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struct list_head cl_delegations;
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struct list_head cl_state_owners;
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struct list_head cl_unused;
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int cl_nunused;
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spinlock_t cl_lock;
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unsigned long cl_lease_time;
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unsigned long cl_last_renewal;
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struct work_struct cl_renewd;
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struct work_struct cl_recoverd;
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struct rpc_wait_queue cl_rpcwaitq;
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/* used for the setclientid verifier */
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struct timespec cl_boot_time;
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/* idmapper */
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struct idmap * cl_idmap;
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/* Our own IP address, as a null-terminated string.
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* This is used to generate the clientid, and the callback address.
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*/
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char cl_ipaddr[16];
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unsigned char cl_id_uniquifier;
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#endif
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};
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/*
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* NFS client parameters stored in the superblock.
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*/
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struct nfs_server {
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struct nfs_client * nfs_client; /* shared client and NFS4 state */
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struct rpc_clnt * client; /* RPC client handle */
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struct rpc_clnt * client_acl; /* ACL RPC client handle */
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struct nfs_iostats * io_stats; /* I/O statistics */
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struct backing_dev_info backing_dev_info;
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int flags; /* various flags */
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unsigned int caps; /* server capabilities */
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unsigned int rsize; /* read size */
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unsigned int rpages; /* read size (in pages) */
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unsigned int wsize; /* write size */
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unsigned int wpages; /* write size (in pages) */
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unsigned int wtmult; /* server disk block size */
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unsigned int dtsize; /* readdir size */
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unsigned int bsize; /* server block size */
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unsigned int acregmin; /* attr cache timeouts */
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unsigned int acregmax;
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unsigned int acdirmin;
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unsigned int acdirmax;
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unsigned int namelen;
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char * hostname; /* remote hostname */
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struct nfs_fh fh;
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struct sockaddr_in addr;
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struct nfs_fsid fsid;
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unsigned long mount_time; /* when this fs was mounted */
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#ifdef CONFIG_NFS_V4
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/* Our own IP address, as a null-terminated string.
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* This is used to generate the clientid, and the callback address.
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*/
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char ip_addr[16];
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char * mnt_path;
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struct list_head nfs4_siblings; /* List of other nfs_server structs
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* that share the same clientid
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*/
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u32 attr_bitmask[2];/* V4 bitmask representing the set
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of attributes supported on this
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filesystem */
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u32 acl_bitmask; /* V4 bitmask representing the ACEs
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that are supported on this
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filesystem */
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#endif
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};
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/* Server capabilities */
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#define NFS_CAP_READDIRPLUS (1U << 0)
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#define NFS_CAP_HARDLINKS (1U << 1)
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#define NFS_CAP_SYMLINKS (1U << 2)
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#define NFS_CAP_ACLS (1U << 3)
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#define NFS_CAP_ATOMIC_OPEN (1U << 4)
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#endif
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