#include <linux/types.h>
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/scatterlist.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_sa.h>
#include <rdma/ib_cm.h>
+#include <rdma/ib_fmr_pool.h>
enum {
SRP_PATH_REC_TIMEOUT_MS = 1000,
SRP_DLID_REDIRECT = 2,
SRP_MAX_LUN = 512,
- SRP_MAX_IU_LEN = 256,
+ SRP_DEF_SG_TABLESIZE = 12,
SRP_RQ_SHIFT = 6,
SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
SRP_SQ_SIZE = SRP_RQ_SIZE - 1,
SRP_CQ_SIZE = SRP_SQ_SIZE + SRP_RQ_SIZE,
- SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1)
+ SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1),
+
+ SRP_FMR_SIZE = 256,
+ SRP_FMR_POOL_SIZE = 1024,
+ SRP_FMR_DIRTY_SIZE = SRP_FMR_POOL_SIZE / 4
};
#define SRP_OP_RECV (1 << 31)
-#define SRP_MAX_INDIRECT ((SRP_MAX_IU_LEN - \
- sizeof (struct srp_cmd) - \
- sizeof (struct srp_indirect_buf)) / 16)
enum srp_target_state {
SRP_TARGET_LIVE,
SRP_TARGET_REMOVED
};
-struct srp_host {
- u8 initiator_port_id[16];
+struct srp_device {
+ struct list_head dev_list;
struct ib_device *dev;
- u8 port;
struct ib_pd *pd;
struct ib_mr *mr;
+ struct ib_fmr_pool *fmr_pool;
+ int fmr_page_shift;
+ int fmr_page_size;
+ u64 fmr_page_mask;
+};
+
+struct srp_host {
+ struct srp_device *dev;
+ u8 port;
struct class_device class_dev;
struct list_head target_list;
- struct mutex target_mutex;
+ spinlock_t target_lock;
struct completion released;
struct list_head list;
};
struct scsi_cmnd *scmnd;
struct srp_iu *cmd;
struct srp_iu *tsk_mgmt;
- DECLARE_PCI_UNMAP_ADDR(direct_mapping)
+ struct ib_pool_fmr *fmr;
+ /*
+ * Fake scatterlist used when scmnd->use_sg==0. Can be killed
+ * when the SCSI midlayer no longer generates non-SG commands.
+ */
+ struct scatterlist fake_sg;
struct completion done;
- short next;
+ short index;
u8 cmd_done;
u8 tsk_status;
};
__be64 id_ext;
__be64 ioc_guid;
__be64 service_id;
+ __be64 initiator_ext;
+ u16 io_class;
struct srp_host *srp_host;
struct Scsi_Host *scsi_host;
char target_name[32];
int max_ti_iu_len;
s32 req_lim;
+ int zero_req_lim;
+
unsigned rx_head;
struct srp_iu *rx_ring[SRP_RQ_SIZE];
unsigned tx_tail;
struct srp_iu *tx_ring[SRP_SQ_SIZE + 1];
- int req_head;
+ struct list_head free_reqs;
struct list_head req_queue;
struct srp_request req_ring[SRP_SQ_SIZE];
};
struct srp_iu {
- dma_addr_t dma;
+ u64 dma;
void *buf;
size_t size;
enum dma_data_direction direction;