projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e48354ce NB |
1 | #ifndef ISCSI_THREAD_QUEUE_H |
| 2 | #define ISCSI_THREAD_QUEUE_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Defines for thread sets. | |
| 6 | */ | |
| 7 | extern int iscsi_thread_set_force_reinstatement(struct iscsi_conn *); | |
| 8 | extern void iscsi_add_ts_to_inactive_list(struct iscsi_thread_set *); | |
| 9 | extern int iscsi_allocate_thread_sets(u32); | |
| 10 | extern void iscsi_deallocate_thread_sets(void); | |
| 11 | extern void iscsi_activate_thread_set(struct iscsi_conn *, struct iscsi_thread_set *); | |
| 12 | extern struct iscsi_thread_set *iscsi_get_thread_set(void); | |
| 13 | extern void iscsi_set_thread_clear(struct iscsi_conn *, u8); | |
| 14 | extern void iscsi_set_thread_set_signal(struct iscsi_conn *, u8); | |
| 15 | extern int iscsi_release_thread_set(struct iscsi_conn *); | |
| 16 | extern struct iscsi_conn *iscsi_rx_thread_pre_handler(struct iscsi_thread_set *); | |
| 17 | extern struct iscsi_conn *iscsi_tx_thread_pre_handler(struct iscsi_thread_set *); | |
| 18 | extern int iscsi_thread_set_init(void); | |
| 19 | extern void iscsi_thread_set_free(void); | |
| 20 | ||
| 21 | extern int iscsi_target_tx_thread(void *); | |
| 22 | extern int iscsi_target_rx_thread(void *); | |
| 23 | ||
| 24 | #define TARGET_THREAD_SET_COUNT 4 | |
| 25 | ||
| 26 | #define ISCSI_RX_THREAD 1 | |
| 27 | #define ISCSI_TX_THREAD 2 | |
| 28 | #define ISCSI_RX_THREAD_NAME "iscsi_trx" | |
| 29 | #define ISCSI_TX_THREAD_NAME "iscsi_ttx" | |
| 30 | #define ISCSI_BLOCK_RX_THREAD 0x1 | |
| 31 | #define ISCSI_BLOCK_TX_THREAD 0x2 | |
| 32 | #define ISCSI_CLEAR_RX_THREAD 0x1 | |
| 33 | #define ISCSI_CLEAR_TX_THREAD 0x2 | |
| 34 | #define ISCSI_SIGNAL_RX_THREAD 0x1 | |
| 35 | #define ISCSI_SIGNAL_TX_THREAD 0x2 | |
| 36 | ||
| 37 | /* struct iscsi_thread_set->status */ | |
| 38 | #define ISCSI_THREAD_SET_FREE 1 | |
| 39 | #define ISCSI_THREAD_SET_ACTIVE 2 | |
| 40 | #define ISCSI_THREAD_SET_DIE 3 | |
| 41 | #define ISCSI_THREAD_SET_RESET 4 | |
| 42 | #define ISCSI_THREAD_SET_DEALLOCATE_THREADS 5 | |
| 43 | ||
| 44 | /* By default allow a maximum of 32K iSCSI connections */ | |
| 45 | #define ISCSI_TS_BITMAP_BITS 32768 | |
| 46 | ||
| 47 | struct iscsi_thread_set { | |
| 48 | /* flags used for blocking and restarting sets */ | |
| 49 | int blocked_threads; | |
| 50 | /* flag for creating threads */ | |
| 51 | int create_threads; | |
| 52 | /* flag for delaying readding to inactive list */ | |
| 53 | int delay_inactive; | |
| 54 | /* status for thread set */ | |
| 55 | int status; | |
| 56 | /* which threads have had signals sent */ | |
| 57 | int signal_sent; | |
| 58 | /* flag for which threads exited first */ | |
| 59 | int thread_clear; | |
| 60 | /* Active threads in the thread set */ | |
| 61 | int thread_count; | |
| 62 | /* Unique thread ID */ | |
| 63 | u32 thread_id; | |
| 64 | /* pointer to connection if set is active */ | |
| 65 | struct iscsi_conn *conn; | |
| 66 | /* used for controlling ts state accesses */ | |
| 67 | spinlock_t ts_state_lock; | |
| 68 | /* Used for rx side post startup */ | |
| 69 | struct completion rx_post_start_comp; | |
| 70 | /* Used for tx side post startup */ | |
| 71 | struct completion tx_post_start_comp; | |
| 72 | /* used for restarting thread queue */ | |
| 73 | struct completion rx_restart_comp; | |
| 74 | /* used for restarting thread queue */ | |
| 75 | struct completion tx_restart_comp; | |
| 76 | /* used for normal unused blocking */ | |
| 77 | struct completion rx_start_comp; | |
| 78 | /* used for normal unused blocking */ | |
| 79 | struct completion tx_start_comp; | |
| 80 | /* OS descriptor for rx thread */ | |
| 81 | struct task_struct *rx_thread; | |
| 82 | /* OS descriptor for tx thread */ | |
| 83 | struct task_struct *tx_thread; | |
| 84 | /* struct iscsi_thread_set in list list head*/ | |
| 85 | struct list_head ts_list; | |
| 86 | }; | |
| 87 | ||
| 88 | #endif /*** ISCSI_THREAD_QUEUE_H ***/ |