diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 101 |
1 files changed, 71 insertions, 30 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 606ca8bb7102..17afb0fbcaed 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -161,46 +161,41 @@ struct TCP_Server_Info { int srv_count; /* reference counter */ /* 15 character server name + 0x20 16th byte indicating type = srv */ char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; + enum statusEnum tcpStatus; /* what we think the status is */ char *hostname; /* hostname portion of UNC string */ struct socket *ssocket; struct sockaddr_storage dstaddr; struct sockaddr_storage srcaddr; /* locally bind to this IP */ +#ifdef CONFIG_NET_NS + struct net *net; +#endif wait_queue_head_t response_q; wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ struct list_head pending_mid_q; - void *Server_NlsInfo; /* BB - placeholder for future NLS info */ - unsigned short server_codepage; /* codepage for the server */ - enum protocolEnum protocolType; - char versionMajor; - char versionMinor; - bool svlocal:1; /* local server or remote */ bool noblocksnd; /* use blocking sendmsg */ bool noautotune; /* do not autotune send buf sizes */ bool tcp_nodelay; atomic_t inFlight; /* number of requests on the wire to server */ -#ifdef CONFIG_CIFS_STATS2 - atomic_t inSend; /* requests trying to send */ - atomic_t num_waiters; /* blocked waiting to get in sendrecv */ -#endif - enum statusEnum tcpStatus; /* what we think the status is */ struct mutex srv_mutex; struct task_struct *tsk; char server_GUID[16]; char secMode; + bool session_estab; /* mark when very first sess is established */ + u16 dialect; /* dialect index that server chose */ enum securityEnum secType; unsigned int maxReq; /* Clients should submit no more */ /* than maxReq distinct unanswered SMBs to the server when using */ /* multiplexed reads or writes */ unsigned int maxBuf; /* maxBuf specifies the maximum */ /* message size the server can send or receive for non-raw SMBs */ + /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ + /* when socket is setup (and during reconnect) before NegProt sent */ unsigned int max_rw; /* maxRw specifies the maximum */ /* message size the server can send or receive for */ /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ unsigned int max_vcs; /* maximum number of smb sessions, at least those that can be specified uniquely with vcnumbers */ - char sessid[4]; /* unique token id for this session */ - /* (returned on Negotiate */ int capabilities; /* allow selective disabling of caps by smb sess */ int timeAdj; /* Adjust for difference in server time zone in sec */ __u16 CurrentMid; /* multiplex id - rotating counter */ @@ -210,20 +205,53 @@ struct TCP_Server_Info { __u32 sequence_number; /* for signing, protected by srv_mutex */ struct session_key session_key; unsigned long lstrp; /* when we got last response from this server */ - u16 dialect; /* dialect index that server chose */ struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ /* extended security flavors that server supports */ + bool sec_ntlmssp; /* supports NTLMSSP */ + bool sec_kerberosu2u; /* supports U2U Kerberos */ bool sec_kerberos; /* supports plain Kerberos */ bool sec_mskerberos; /* supports legacy MS Kerberos */ - bool sec_kerberosu2u; /* supports U2U Kerberos */ - bool sec_ntlmssp; /* supports NTLMSSP */ - bool session_estab; /* mark when very first sess is established */ + struct delayed_work echo; /* echo ping workqueue job */ #ifdef CONFIG_CIFS_FSCACHE struct fscache_cookie *fscache; /* client index cache cookie */ #endif +#ifdef CONFIG_CIFS_STATS2 + atomic_t inSend; /* requests trying to send */ + atomic_t num_waiters; /* blocked waiting to get in sendrecv */ +#endif }; /* + * Macros to allow the TCP_Server_Info->net field and related code to drop out + * when CONFIG_NET_NS isn't set. + */ + +#ifdef CONFIG_NET_NS + +static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) +{ + return srv->net; +} + +static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) +{ + srv->net = net; +} + +#else + +static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) +{ + return &init_net; +} + +static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) +{ +} + +#endif + +/* * Session structure. One of these for each uid session with a particular host */ struct cifsSesInfo { @@ -446,11 +474,11 @@ struct cifsInodeInfo { /* BB add in lists for dirty pages i.e. write caching info for oplock */ struct list_head openFileList; __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ - unsigned long time; /* jiffies of last update/check of inode */ - bool clientCanCacheRead:1; /* read oplock */ - bool clientCanCacheAll:1; /* read and writebehind oplock */ - bool delete_pending:1; /* DELETE_ON_CLOSE is set */ - bool invalid_mapping:1; /* pagecache is invalid */ + bool clientCanCacheRead; /* read oplock */ + bool clientCanCacheAll; /* read and writebehind oplock */ + bool delete_pending; /* DELETE_ON_CLOSE is set */ + bool invalid_mapping; /* pagecache is invalid */ + unsigned long time; /* jiffies of last update of inode */ u64 server_eof; /* current file size on server */ u64 uniqueid; /* server inode number */ u64 createtime; /* creation time on server */ @@ -508,6 +536,18 @@ static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, #endif +struct mid_q_entry; + +/* + * This is the prototype for the mid callback function. When creating one, + * take special care to avoid deadlocks. Things to bear in mind: + * + * - it will be called by cifsd + * - the GlobalMid_Lock will be held + * - the mid will be removed from the pending_mid_q list + */ +typedef void (mid_callback_t)(struct mid_q_entry *mid); + /* one of these for every pending CIFS request to the server */ struct mid_q_entry { struct list_head qhead; /* mids waiting on reply from this server */ @@ -519,7 +559,8 @@ struct mid_q_entry { unsigned long when_sent; /* time when smb send finished */ unsigned long when_received; /* when demux complete (taken off wire) */ #endif - struct task_struct *tsk; /* task waiting for response */ + mid_callback_t *callback; /* call completion callback */ + void *callback_data; /* general purpose pointer for callback */ struct smb_hdr *resp_buf; /* response buffer */ int midState; /* wish this were enum but can not pass to wait_event */ __u8 command; /* smb command code */ @@ -613,7 +654,7 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param, #define MID_REQUEST_SUBMITTED 2 #define MID_RESPONSE_RECEIVED 4 #define MID_RETRY_NEEDED 8 /* session closed while this request out */ -#define MID_NO_RESP_NEEDED 0x10 +#define MID_RESPONSE_MALFORMED 0x10 /* Types of response buffer returned from SendReceive2 */ #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ @@ -622,12 +663,9 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param, #define CIFS_IOVEC 4 /* array of response buffers */ /* Type of Request to SendReceive2 */ -#define CIFS_STD_OP 0 /* normal request timeout */ -#define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ -#define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ -#define CIFS_BLOCKING_OP 4 /* operation can block */ -#define CIFS_ASYNC_OP 8 /* do not wait for response */ -#define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ +#define CIFS_BLOCKING_OP 1 /* operation can block */ +#define CIFS_ASYNC_OP 2 /* do not wait for response */ +#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ #define CIFS_NO_RESP 0x040 /* no response buffer required */ @@ -790,6 +828,9 @@ GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ +/* reconnect after this many failed echo attempts */ +GLOBAL_EXTERN unsigned short echo_retries; + void cifs_oplock_break(struct work_struct *work); void cifs_oplock_break_get(struct cifsFileInfo *cfile); void cifs_oplock_break_put(struct cifsFileInfo *cfile); |