mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 09:46:51 +07:00
e48354ce07
The Linux-iSCSI.org target module is a full featured in-kernel software implementation of iSCSI target mode (RFC-3720) for the current WIP mainline target v4.1 infrastructure code for the v3.1 kernel. More information can be found here: http://linux-iscsi.org/wiki/ISCSI This includes support for: * RFC-3720 defined request / response state machines and support for all defined iSCSI operation codes from Section 10.2.1.2 using libiscsi include/scsi/iscsi_proto.h PDU definitions * Target v4.1 compatible control plane using the generic layout in target_core_fabric_configfs.c and fabric dependent attributes within /sys/kernel/config/target/iscsi/ subdirectories. * Target v4.1 compatible iSCSI statistics based on RFC-4544 (iSCSI MIBS) * Support for IPv6 and IPv4 network portals in M:N mapping to TPGs * iSCSI Error Recovery Hierarchy support * Per iSCSI connection RX/TX thread pair scheduling affinity * crc32c + crc32c_intel SSEv4 instruction offload support using libcrypto * CHAP Authentication support using libcrypto * Conversion to use internal SGl allocation with iscsit_alloc_buffs() -> transport_generic_map_mem_to_cmd() (nab: Fix iscsi_proto.h struct scsi_lun usage from linux-next in commit: iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]) (nab: Fix 32-bit compile warnings) Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Andy Grover <agrover@redhat.com> Acked-by: Roland Dreier <roland@kernel.org> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
#ifndef ISCSI_THREAD_QUEUE_H
|
|
#define ISCSI_THREAD_QUEUE_H
|
|
|
|
/*
|
|
* Defines for thread sets.
|
|
*/
|
|
extern int iscsi_thread_set_force_reinstatement(struct iscsi_conn *);
|
|
extern void iscsi_add_ts_to_inactive_list(struct iscsi_thread_set *);
|
|
extern int iscsi_allocate_thread_sets(u32);
|
|
extern void iscsi_deallocate_thread_sets(void);
|
|
extern void iscsi_activate_thread_set(struct iscsi_conn *, struct iscsi_thread_set *);
|
|
extern struct iscsi_thread_set *iscsi_get_thread_set(void);
|
|
extern void iscsi_set_thread_clear(struct iscsi_conn *, u8);
|
|
extern void iscsi_set_thread_set_signal(struct iscsi_conn *, u8);
|
|
extern int iscsi_release_thread_set(struct iscsi_conn *);
|
|
extern struct iscsi_conn *iscsi_rx_thread_pre_handler(struct iscsi_thread_set *);
|
|
extern struct iscsi_conn *iscsi_tx_thread_pre_handler(struct iscsi_thread_set *);
|
|
extern int iscsi_thread_set_init(void);
|
|
extern void iscsi_thread_set_free(void);
|
|
|
|
extern int iscsi_target_tx_thread(void *);
|
|
extern int iscsi_target_rx_thread(void *);
|
|
|
|
#define TARGET_THREAD_SET_COUNT 4
|
|
|
|
#define ISCSI_RX_THREAD 1
|
|
#define ISCSI_TX_THREAD 2
|
|
#define ISCSI_RX_THREAD_NAME "iscsi_trx"
|
|
#define ISCSI_TX_THREAD_NAME "iscsi_ttx"
|
|
#define ISCSI_BLOCK_RX_THREAD 0x1
|
|
#define ISCSI_BLOCK_TX_THREAD 0x2
|
|
#define ISCSI_CLEAR_RX_THREAD 0x1
|
|
#define ISCSI_CLEAR_TX_THREAD 0x2
|
|
#define ISCSI_SIGNAL_RX_THREAD 0x1
|
|
#define ISCSI_SIGNAL_TX_THREAD 0x2
|
|
|
|
/* struct iscsi_thread_set->status */
|
|
#define ISCSI_THREAD_SET_FREE 1
|
|
#define ISCSI_THREAD_SET_ACTIVE 2
|
|
#define ISCSI_THREAD_SET_DIE 3
|
|
#define ISCSI_THREAD_SET_RESET 4
|
|
#define ISCSI_THREAD_SET_DEALLOCATE_THREADS 5
|
|
|
|
/* By default allow a maximum of 32K iSCSI connections */
|
|
#define ISCSI_TS_BITMAP_BITS 32768
|
|
|
|
struct iscsi_thread_set {
|
|
/* flags used for blocking and restarting sets */
|
|
int blocked_threads;
|
|
/* flag for creating threads */
|
|
int create_threads;
|
|
/* flag for delaying readding to inactive list */
|
|
int delay_inactive;
|
|
/* status for thread set */
|
|
int status;
|
|
/* which threads have had signals sent */
|
|
int signal_sent;
|
|
/* flag for which threads exited first */
|
|
int thread_clear;
|
|
/* Active threads in the thread set */
|
|
int thread_count;
|
|
/* Unique thread ID */
|
|
u32 thread_id;
|
|
/* pointer to connection if set is active */
|
|
struct iscsi_conn *conn;
|
|
/* used for controlling ts state accesses */
|
|
spinlock_t ts_state_lock;
|
|
/* Used for rx side post startup */
|
|
struct completion rx_post_start_comp;
|
|
/* Used for tx side post startup */
|
|
struct completion tx_post_start_comp;
|
|
/* used for restarting thread queue */
|
|
struct completion rx_restart_comp;
|
|
/* used for restarting thread queue */
|
|
struct completion tx_restart_comp;
|
|
/* used for normal unused blocking */
|
|
struct completion rx_start_comp;
|
|
/* used for normal unused blocking */
|
|
struct completion tx_start_comp;
|
|
/* OS descriptor for rx thread */
|
|
struct task_struct *rx_thread;
|
|
/* OS descriptor for tx thread */
|
|
struct task_struct *tx_thread;
|
|
/* struct iscsi_thread_set in list list head*/
|
|
struct list_head ts_list;
|
|
};
|
|
|
|
#endif /*** ISCSI_THREAD_QUEUE_H ***/
|