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223 lines
5.3 KiB
223 lines
5.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* linux/fs/nfs/callback.h |
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* |
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* Copyright (C) 2004 Trond Myklebust |
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* |
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* NFSv4 callback definitions |
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*/ |
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#ifndef __LINUX_FS_NFS_CALLBACK_H |
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#define __LINUX_FS_NFS_CALLBACK_H |
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#include <linux/sunrpc/svc.h> |
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#define NFS4_CALLBACK 0x40000000 |
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#define NFS4_CALLBACK_XDRSIZE 2048 |
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#define NFS4_CALLBACK_BUFSIZE (1024 + NFS4_CALLBACK_XDRSIZE) |
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enum nfs4_callback_procnum { |
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CB_NULL = 0, |
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CB_COMPOUND = 1, |
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}; |
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enum nfs4_callback_opnum { |
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OP_CB_GETATTR = 3, |
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OP_CB_RECALL = 4, |
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/* Callback operations new to NFSv4.1 */ |
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OP_CB_LAYOUTRECALL = 5, |
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OP_CB_NOTIFY = 6, |
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OP_CB_PUSH_DELEG = 7, |
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OP_CB_RECALL_ANY = 8, |
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OP_CB_RECALLABLE_OBJ_AVAIL = 9, |
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OP_CB_RECALL_SLOT = 10, |
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OP_CB_SEQUENCE = 11, |
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OP_CB_WANTS_CANCELLED = 12, |
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OP_CB_NOTIFY_LOCK = 13, |
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OP_CB_NOTIFY_DEVICEID = 14, |
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/* Callback operations new to NFSv4.2 */ |
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OP_CB_OFFLOAD = 15, |
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OP_CB_ILLEGAL = 10044, |
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}; |
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struct nfs4_slot; |
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struct cb_process_state { |
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__be32 drc_status; |
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struct nfs_client *clp; |
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struct nfs4_slot *slot; |
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u32 minorversion; |
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struct net *net; |
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}; |
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struct cb_compound_hdr_arg { |
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unsigned int taglen; |
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const char *tag; |
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unsigned int minorversion; |
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unsigned int cb_ident; /* v4.0 callback identifier */ |
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unsigned nops; |
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}; |
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struct cb_compound_hdr_res { |
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__be32 *status; |
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unsigned int taglen; |
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const char *tag; |
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__be32 *nops; |
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}; |
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struct cb_getattrargs { |
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struct nfs_fh fh; |
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uint32_t bitmap[2]; |
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}; |
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struct cb_getattrres { |
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__be32 status; |
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uint32_t bitmap[2]; |
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uint64_t size; |
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uint64_t change_attr; |
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struct timespec64 ctime; |
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struct timespec64 mtime; |
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}; |
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struct cb_recallargs { |
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struct nfs_fh fh; |
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nfs4_stateid stateid; |
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uint32_t truncate; |
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}; |
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#if defined(CONFIG_NFS_V4_1) |
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struct referring_call { |
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uint32_t rc_sequenceid; |
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uint32_t rc_slotid; |
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}; |
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struct referring_call_list { |
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struct nfs4_sessionid rcl_sessionid; |
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uint32_t rcl_nrefcalls; |
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struct referring_call *rcl_refcalls; |
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}; |
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struct cb_sequenceargs { |
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struct sockaddr *csa_addr; |
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struct nfs4_sessionid csa_sessionid; |
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uint32_t csa_sequenceid; |
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uint32_t csa_slotid; |
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uint32_t csa_highestslotid; |
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uint32_t csa_cachethis; |
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uint32_t csa_nrclists; |
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struct referring_call_list *csa_rclists; |
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}; |
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struct cb_sequenceres { |
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__be32 csr_status; |
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struct nfs4_sessionid csr_sessionid; |
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uint32_t csr_sequenceid; |
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uint32_t csr_slotid; |
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uint32_t csr_highestslotid; |
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uint32_t csr_target_highestslotid; |
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}; |
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extern __be32 nfs4_callback_sequence(void *argp, void *resp, |
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struct cb_process_state *cps); |
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#define RCA4_TYPE_MASK_RDATA_DLG 0 |
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#define RCA4_TYPE_MASK_WDATA_DLG 1 |
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#define RCA4_TYPE_MASK_DIR_DLG 2 |
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#define RCA4_TYPE_MASK_FILE_LAYOUT 3 |
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#define RCA4_TYPE_MASK_BLK_LAYOUT 4 |
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#define RCA4_TYPE_MASK_OBJ_LAYOUT_MIN 8 |
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#define RCA4_TYPE_MASK_OBJ_LAYOUT_MAX 9 |
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#define RCA4_TYPE_MASK_OTHER_LAYOUT_MIN 12 |
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#define RCA4_TYPE_MASK_OTHER_LAYOUT_MAX 15 |
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#define PNFS_FF_RCA4_TYPE_MASK_READ 16 |
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#define PNFS_FF_RCA4_TYPE_MASK_RW 17 |
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#define RCA4_TYPE_MASK_ALL 0x3f31f |
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struct cb_recallanyargs { |
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uint32_t craa_objs_to_keep; |
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uint32_t craa_type_mask; |
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}; |
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extern __be32 nfs4_callback_recallany(void *argp, void *resp, |
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struct cb_process_state *cps); |
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struct cb_recallslotargs { |
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uint32_t crsa_target_highest_slotid; |
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}; |
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extern __be32 nfs4_callback_recallslot(void *argp, void *resp, |
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struct cb_process_state *cps); |
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struct cb_layoutrecallargs { |
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uint32_t cbl_recall_type; |
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uint32_t cbl_layout_type; |
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uint32_t cbl_layoutchanged; |
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union { |
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struct { |
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struct nfs_fh cbl_fh; |
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struct pnfs_layout_range cbl_range; |
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nfs4_stateid cbl_stateid; |
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}; |
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struct nfs_fsid cbl_fsid; |
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}; |
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}; |
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extern __be32 nfs4_callback_layoutrecall(void *argp, void *resp, |
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struct cb_process_state *cps); |
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struct cb_devicenotifyitem { |
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uint32_t cbd_notify_type; |
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uint32_t cbd_layout_type; |
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struct nfs4_deviceid cbd_dev_id; |
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uint32_t cbd_immediate; |
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}; |
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struct cb_devicenotifyargs { |
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int ndevs; |
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struct cb_devicenotifyitem *devs; |
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}; |
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extern __be32 nfs4_callback_devicenotify(void *argp, void *resp, |
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struct cb_process_state *cps); |
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struct cb_notify_lock_args { |
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struct nfs_fh cbnl_fh; |
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struct nfs_lowner cbnl_owner; |
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bool cbnl_valid; |
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}; |
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extern __be32 nfs4_callback_notify_lock(void *argp, void *resp, |
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struct cb_process_state *cps); |
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#endif /* CONFIG_NFS_V4_1 */ |
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#ifdef CONFIG_NFS_V4_2 |
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struct cb_offloadargs { |
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struct nfs_fh coa_fh; |
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nfs4_stateid coa_stateid; |
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uint32_t error; |
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uint64_t wr_count; |
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struct nfs_writeverf wr_writeverf; |
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}; |
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extern __be32 nfs4_callback_offload(void *args, void *dummy, |
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struct cb_process_state *cps); |
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#endif /* CONFIG_NFS_V4_2 */ |
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extern int check_gss_callback_principal(struct nfs_client *, struct svc_rqst *); |
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extern __be32 nfs4_callback_getattr(void *argp, void *resp, |
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struct cb_process_state *cps); |
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extern __be32 nfs4_callback_recall(void *argp, void *resp, |
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struct cb_process_state *cps); |
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#if IS_ENABLED(CONFIG_NFS_V4) |
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extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt); |
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extern void nfs_callback_down(int minorversion, struct net *net); |
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#endif /* CONFIG_NFS_V4 */ |
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/* |
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* nfs41: Callbacks are expected to not cause substantial latency, |
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* so we limit their concurrency to 1 by setting up the maximum number |
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* of slots for the backchannel. |
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*/ |
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#define NFS41_BC_MIN_CALLBACKS 1 |
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#define NFS41_BC_MAX_CALLBACKS 1 |
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#define NFS4_MIN_NR_CALLBACK_THREADS 1 |
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extern unsigned int nfs_callback_set_tcpport; |
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extern unsigned short nfs_callback_nr_threads; |
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#endif /* __LINUX_FS_NFS_CALLBACK_H */
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