diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 85 |
1 files changed, 72 insertions, 13 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 01ded7038b19..f293e052e351 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -216,6 +216,7 @@ struct cifs_io_parms; struct cifs_search_info; struct cifsInodeInfo; struct cifs_open_parms; +struct cifs_credits; struct smb_version_operations { int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, @@ -230,12 +231,15 @@ struct smb_version_operations { /* check response: verify signature, map error */ int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, bool); - void (*add_credits)(struct TCP_Server_Info *, const unsigned int, - const int); + void (*add_credits)(struct TCP_Server_Info *server, + const struct cifs_credits *credits, + const int optype); void (*set_credits)(struct TCP_Server_Info *, const int); int * (*get_credits_field)(struct TCP_Server_Info *, const int); unsigned int (*get_credits)(struct mid_q_entry *); __u64 (*get_next_mid)(struct TCP_Server_Info *); + void (*revert_current_mid)(struct TCP_Server_Info *server, + const unsigned int val); /* data offset from read response message */ unsigned int (*read_data_offset)(char *); /* @@ -383,8 +387,8 @@ struct smb_version_operations { struct cifs_fid *); /* calculate a size of SMB message */ unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); - /* check for STATUS_PENDING and process it in a positive case */ - bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); + /* check for STATUS_PENDING and process the response if yes */ + bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); /* check for STATUS_NETWORK_SESSION_EXPIRED */ bool (*is_session_expired)(char *); /* send oplock break response */ @@ -452,7 +456,11 @@ struct smb_version_operations { unsigned int (*wp_retry_size)(struct inode *); /* get mtu credits */ int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, - unsigned int *, unsigned int *); + unsigned int *, struct cifs_credits *); + /* adjust previously taken mtu credits to request size */ + int (*adjust_credits)(struct TCP_Server_Info *server, + struct cifs_credits *credits, + const unsigned int payload_size); /* check if we need to issue closedir */ bool (*dir_needs_close)(struct cifsFileInfo *); long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, @@ -557,6 +565,7 @@ struct smb_vol { bool resilient:1; /* noresilient not required since not fored for CA */ bool domainauto:1; bool rdma:1; + unsigned int bsize; unsigned int rsize; unsigned int wsize; bool sockopt_tcp_nodelay:1; @@ -710,6 +719,11 @@ struct TCP_Server_Info { int nr_targets; }; +struct cifs_credits { + unsigned int value; + unsigned int instance; +}; + static inline unsigned int in_flight(struct TCP_Server_Info *server) { @@ -731,18 +745,18 @@ has_credits(struct TCP_Server_Info *server, int *credits) } static inline void -add_credits(struct TCP_Server_Info *server, const unsigned int add, +add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, const int optype) { - server->ops->add_credits(server, add, optype); + server->ops->add_credits(server, credits, optype); } static inline void -add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, - const int optype) +add_credits_and_wake_if(struct TCP_Server_Info *server, + const struct cifs_credits *credits, const int optype) { - if (add) { - server->ops->add_credits(server, add, optype); + if (credits->value) { + server->ops->add_credits(server, credits, optype); wake_up(&server->request_q); } } @@ -753,6 +767,14 @@ set_credits(struct TCP_Server_Info *server, const int val) server->ops->set_credits(server, val); } +static inline int +adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, + const unsigned int payload_size) +{ + return server->ops->adjust_credits ? + server->ops->adjust_credits(server, credits, payload_size) : 0; +} + static inline __le64 get_next_mid64(struct TCP_Server_Info *server) { @@ -770,6 +792,22 @@ get_next_mid(struct TCP_Server_Info *server) return cpu_to_le16(mid); } +static inline void +revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) +{ + if (server->ops->revert_current_mid) + server->ops->revert_current_mid(server, val); +} + +static inline void +revert_current_mid_from_hdr(struct TCP_Server_Info *server, + const struct smb2_sync_hdr *shdr) +{ + unsigned int num = le16_to_cpu(shdr->CreditCharge); + + return revert_current_mid(server, num > 0 ? num : 1); +} + static inline __u16 get_mid(const struct smb_hdr *smb) { @@ -1234,7 +1272,7 @@ struct cifs_readdata { unsigned int pagesz; unsigned int page_offset; unsigned int tailsz; - unsigned int credits; + struct cifs_credits credits; unsigned int nr_pages; struct page **pages; }; @@ -1260,7 +1298,7 @@ struct cifs_writedata { unsigned int pagesz; unsigned int page_offset; unsigned int tailsz; - unsigned int credits; + struct cifs_credits credits; unsigned int nr_pages; struct page **pages; }; @@ -1422,6 +1460,7 @@ struct mid_q_entry { struct kref refcount; struct TCP_Server_Info *server; /* server corresponding to this mid */ __u64 mid; /* multiplex id */ + __u16 credits; /* number of credits consumed by this mid */ __u32 pid; /* process id */ __u32 sequence_number; /* for CIFS signing */ unsigned long when_alloc; /* when mid was created */ @@ -1438,6 +1477,7 @@ struct mid_q_entry { int mid_state; /* wish this were enum but can not pass to wait_event */ unsigned int mid_flags; __le16 command; /* smb command code */ + unsigned int optype; /* operation type */ bool large_buf:1; /* if valid response, is pointer to large buf */ bool multiRsp:1; /* multiple trans2 responses for one request */ bool multiEnd:1; /* both received */ @@ -1574,6 +1614,25 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param, kfree(param); } +static inline bool is_interrupt_error(int error) +{ + switch (error) { + case -EINTR: + case -ERESTARTSYS: + case -ERESTARTNOHAND: + case -ERESTARTNOINTR: + return true; + } + return false; +} + +static inline bool is_retryable_error(int error) +{ + if (is_interrupt_error(error) || error == -EAGAIN) + return true; + return false; +} + #define MID_FREE 0 #define MID_REQUEST_ALLOCATED 1 #define MID_REQUEST_SUBMITTED 2 |