diff options
Diffstat (limited to 'drivers/infiniband/ulp/isert/ib_isert.h')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index 912fdaa4b0de..989c5da6278b 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -33,6 +33,38 @@ #define isert_err(fmt, arg...) \ pr_err(PFX "%s: " fmt, __func__ , ## arg) +/* Constant PDU lengths calculations */ +#define ISER_HEADERS_LEN (sizeof(struct iser_ctrl) + \ + sizeof(struct iscsi_hdr)) +#define ISER_RECV_DATA_SEG_LEN 8192 +#define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN) +#define ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN) + +/* QP settings */ +/* Maximal bounds on received asynchronous PDUs */ +#define ISERT_MAX_TX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */ + +#define ISERT_MAX_RX_MISC_PDUS 6 /* + * NOOP_OUT(2), TEXT(1), + * SCSI_TMFUNC(2), LOGOUT(1) + */ + +#define ISCSI_DEF_XMIT_CMDS_MAX 128 /* from libiscsi.h, must be power of 2 */ + +#define ISERT_QP_MAX_RECV_DTOS (ISCSI_DEF_XMIT_CMDS_MAX) + +#define ISERT_MIN_POSTED_RX (ISCSI_DEF_XMIT_CMDS_MAX >> 2) + +#define ISERT_INFLIGHT_DATAOUTS 8 + +#define ISERT_QP_MAX_REQ_DTOS (ISCSI_DEF_XMIT_CMDS_MAX * \ + (1 + ISERT_INFLIGHT_DATAOUTS) + \ + ISERT_MAX_TX_MISC_PDUS + \ + ISERT_MAX_RX_MISC_PDUS) + +#define ISER_RX_PAD_SIZE (ISER_RECV_DATA_SEG_LEN + 4096 - \ + (ISER_RX_PAYLOAD_SIZE + sizeof(u64) + sizeof(struct ib_sge))) + #define ISCSI_ISER_SG_TABLESIZE 256 #define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL #define ISER_BEACON_WRID 0xfffffffffffffffeULL |