diff options
Diffstat (limited to 'fs/afs/internal.h')
| -rw-r--r-- | fs/afs/internal.h | 66 |
1 files changed, 45 insertions, 21 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 88db04220773..4d42f84a8da4 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -33,6 +33,7 @@ struct pagevec; struct afs_call; struct afs_vnode; +struct afs_server_probe; /* * Partial file-locking emulation mode. (The problem being that AFS3 only @@ -146,14 +147,13 @@ struct afs_call { }; void *buffer; /* reply receive buffer */ union { - struct { - struct afs_addr_list *probe_alist; - unsigned char probe_index; /* Address in ->probe_alist */ - }; + struct afs_endpoint_state *probe; + struct afs_addr_list *vl_probe; struct afs_addr_list *ret_alist; struct afs_vldb_entry *ret_vldb; char *ret_str; }; + unsigned char probe_index; /* Address in ->probe_alist */ struct afs_operation *op; unsigned int server_index; refcount_t ref; @@ -521,6 +521,32 @@ struct afs_vldb_entry { }; /* + * Fileserver endpoint state. The records the addresses of a fileserver's + * endpoints and the state and result of a round of probing on them. This + * allows the rotation algorithm to access those results without them being + * erased by a subsequent round of probing. + */ +struct afs_endpoint_state { + struct rcu_head rcu; + struct afs_addr_list *addresses; /* The addresses being probed */ + unsigned long responsive_set; /* Bitset of responsive endpoints */ + unsigned long failed_set; /* Bitset of endpoints we failed to probe */ + refcount_t ref; + unsigned int server_id; /* Debug ID of server */ + unsigned int probe_seq; /* Probe sequence (from server::probe_counter) */ + + atomic_t nr_probing; /* Number of outstanding probes */ + unsigned int rtt; /* Best RTT in uS (or UINT_MAX) */ + s32 abort_code; + short error; + bool responded:1; + bool is_yfs:1; + bool not_yfs:1; + bool local_failure:1; + bool superseded:1; /* Set if has been superseded */ +}; + +/* * Record of fileserver with which we're actively communicating. */ struct afs_server { @@ -530,7 +556,6 @@ struct afs_server { struct afs_uuid _uuid; }; - struct afs_addr_list __rcu *addresses; struct afs_cell *cell; /* Cell to which belongs (pins ref) */ struct rb_node uuid_rb; /* Link in net->fs_servers */ struct afs_server __rcu *uuid_next; /* Next server with same UUID */ @@ -568,19 +593,11 @@ struct afs_server { unsigned cb_s_break; /* Break-everything counter. */ /* Probe state */ + struct afs_endpoint_state __rcu *endpoint_state; /* Latest endpoint/probe state */ unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ wait_queue_head_t probe_wq; - atomic_t probe_outstanding; + unsigned int probe_counter; /* Number of probes issued */ spinlock_t probe_lock; - struct { - unsigned int rtt; /* Best RTT in uS (or UINT_MAX) */ - u32 abort_code; - short error; - bool responded:1; - bool is_yfs:1; - bool not_yfs:1; - bool local_failure:1; - } probe; }; /* @@ -883,7 +900,7 @@ struct afs_operation { /* Fileserver iteration state */ struct afs_server_list *server_list; /* Current server list (pins ref) */ struct afs_server *server; /* Server we're using (ref pinned by server_list) */ - struct afs_addr_list *alist; /* Current address list (pins ref) */ + struct afs_endpoint_state *estate; /* Current endpoint state (pins ref) */ struct afs_call *call; unsigned long untried_servers; /* Bitmask of untried servers */ unsigned long addr_tried; /* Tried addresses */ @@ -1153,7 +1170,7 @@ extern void afs_fs_release_lock(struct afs_operation *); int afs_fs_give_up_all_callbacks(struct afs_net *net, struct afs_server *server, struct afs_address *addr, struct key *key); bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server, - struct afs_addr_list *alist, unsigned int addr_index, + struct afs_endpoint_state *estate, unsigned int addr_index, struct key *key); extern void afs_fs_inline_bulk_status(struct afs_operation *); @@ -1190,12 +1207,17 @@ static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, /* * fs_probe.c */ +struct afs_endpoint_state *afs_get_endpoint_state(struct afs_endpoint_state *estate, + enum afs_estate_trace where); +void afs_put_endpoint_state(struct afs_endpoint_state *estate, enum afs_estate_trace where); extern void afs_fileserver_probe_result(struct afs_call *); -extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); +void afs_fs_probe_fileserver(struct afs_net *net, struct afs_server *server, + struct afs_addr_list *new_addrs, struct key *key); extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); extern void afs_fs_probe_dispatcher(struct work_struct *); -extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); +int afs_wait_for_one_fs_probe(struct afs_server *server, struct afs_endpoint_state *estate, + bool is_intr); extern void afs_fs_probe_cleanup(struct afs_net *); /* @@ -1348,12 +1370,14 @@ extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, gfp_t gfp) { + struct afs_addr_list *alist = op->estate->addresses; + op->call = call; op->type = call->type; call->op = op; call->key = op->key; call->intr = !(op->flags & AFS_OPERATION_UNINTR); - call->peer = rxrpc_kernel_get_peer(op->alist->addrs[op->addr_index].peer); + call->peer = rxrpc_kernel_get_peer(alist->addrs[op->addr_index].peer); call->service_id = op->server->service_id; afs_make_call(call, gfp); } @@ -1476,7 +1500,7 @@ extern void afs_manage_servers(struct work_struct *); extern void afs_servers_timer(struct timer_list *); extern void afs_fs_probe_timer(struct timer_list *); extern void __net_exit afs_purge_servers(struct afs_net *); -extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); +bool afs_check_server_record(struct afs_operation *op, struct afs_server *server, struct key *key); static inline void afs_inc_servers_outstanding(struct afs_net *net) { |