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Diffstat (limited to 'drivers/infiniband/ulp/srp/ib_srp.h')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.h46
1 files changed, 25 insertions, 21 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index ed0dce9e479f..9dc6fc3fd894 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -59,16 +59,15 @@ enum {
SRP_RQ_SHIFT = 6,
SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
- SRP_RQ_MASK = SRP_RQ_SIZE - 1,
SRP_SQ_SIZE = SRP_RQ_SIZE,
- SRP_SQ_MASK = SRP_SQ_SIZE - 1,
SRP_RSP_SQ_SIZE = 1,
SRP_REQ_SQ_SIZE = SRP_SQ_SIZE - SRP_RSP_SQ_SIZE,
SRP_TSK_MGMT_SQ_SIZE = 1,
SRP_CMD_SQ_SIZE = SRP_REQ_SQ_SIZE - SRP_TSK_MGMT_SQ_SIZE,
- SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1),
+ SRP_TAG_NO_REQ = ~0U,
+ SRP_TAG_TSK_MGMT = 1U << 31,
SRP_FMR_SIZE = 256,
SRP_FMR_POOL_SIZE = 1024,
@@ -113,15 +112,29 @@ struct srp_request {
struct list_head list;
struct scsi_cmnd *scmnd;
struct srp_iu *cmd;
- struct srp_iu *tsk_mgmt;
struct ib_pool_fmr *fmr;
- struct completion done;
short index;
- u8 cmd_done;
- u8 tsk_status;
};
struct srp_target_port {
+ /* These are RW in the hot path, and commonly used together */
+ struct list_head free_tx;
+ struct list_head free_reqs;
+ spinlock_t lock;
+ s32 req_lim;
+
+ /* These are read-only in the hot path */
+ struct ib_cq *send_cq ____cacheline_aligned_in_smp;
+ struct ib_cq *recv_cq;
+ struct ib_qp *qp;
+ u32 lkey;
+ u32 rkey;
+ enum srp_target_state state;
+
+ /* Everything above this point is used in the hot path of
+ * command processing. Try to keep them packed into cachelines.
+ */
+
__be64 id_ext;
__be64 ioc_guid;
__be64 service_id;
@@ -138,24 +151,13 @@ struct srp_target_port {
int path_query_id;
struct ib_cm_id *cm_id;
- struct ib_cq *recv_cq;
- struct ib_cq *send_cq;
- struct ib_qp *qp;
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_head;
- unsigned tx_tail;
struct srp_iu *tx_ring[SRP_SQ_SIZE];
-
- struct list_head free_reqs;
- struct list_head req_queue;
+ struct srp_iu *rx_ring[SRP_RQ_SIZE];
struct srp_request req_ring[SRP_CMD_SQ_SIZE];
struct work_struct work;
@@ -163,16 +165,18 @@ struct srp_target_port {
struct list_head list;
struct completion done;
int status;
- enum srp_target_state state;
int qp_in_error;
+
+ struct completion tsk_mgmt_done;
+ u8 tsk_mgmt_status;
};
struct srp_iu {
+ struct list_head list;
u64 dma;
void *buf;
size_t size;
enum dma_data_direction direction;
- enum srp_iu_type type;
};
#endif /* IB_SRP_H */