#ifndef __LIBSRP_H__ #define __LIBSRP_H__ #include <linux/list.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_host.h> #include <scsi/srp.h> enum iue_flags { V_DIOVER, V_WRITE, V_LINKED, V_FLYING, }; struct srp_buf { dma_addr_t dma; void *buf; }; struct srp_queue { void *pool; void *items; struct kfifo *queue; spinlock_t lock; }; struct srp_target { struct Scsi_Host *shost; struct device *dev; spinlock_t lock; struct list_head cmd_queue; size_t srp_iu_size; struct srp_queue iu_queue; size_t rx_ring_size; struct srp_buf **rx_ring; void *ldata; }; struct iu_entry { struct srp_target *target; struct list_head ilist; dma_addr_t remote_token; unsigned long flags; struct srp_buf *sbuf; }; typedef int (srp_rdma_t)(struct scsi_cmnd *, struct scatterlist *, int, struct srp_direct_buf *, int, enum dma_data_direction, unsigned int); extern int srp_target_alloc(struct srp_target *, struct device *, size_t, size_t); extern void srp_target_free(struct srp_target *); extern struct iu_entry *srp_iu_get(struct srp_target *); extern void srp_iu_put(struct iu_entry *); extern int srp_cmd_queue(struct Scsi_Host *, struct srp_cmd *, void *, u64); extern int srp_transfer_data(struct scsi_cmnd *, struct srp_cmd *, srp_rdma_t, int, int); static inline struct srp_target *host_to_srp_target(struct Scsi_Host *host) { return (struct srp_target *) host->hostdata; } static inline int srp_cmd_direction(struct srp_cmd *cmd) { return (cmd->buf_fmt >> 4) ? DMA_TO_DEVICE : DMA_FROM_DEVICE; } #endif