| Nicholas Bellinger | b8d26b3 | 2013-03-07 00:56:19 -0800 | [diff] [blame] | 1 | /* From iscsi_iser.h */ |
| 2 | |
| 3 | struct iser_hdr { |
| 4 | u8 flags; |
| 5 | u8 rsvd[3]; |
| 6 | __be32 write_stag; /* write rkey */ |
| 7 | __be64 write_va; |
| 8 | __be32 read_stag; /* read rkey */ |
| 9 | __be64 read_va; |
| 10 | } __packed; |
| 11 | |
| 12 | /*Constant PDU lengths calculations */ |
| 13 | #define ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr)) |
| 14 | |
| 15 | #define ISER_RECV_DATA_SEG_LEN 8192 |
| 16 | #define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN) |
| 17 | #define ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN) |
| 18 | |
| 19 | /* QP settings */ |
| 20 | /* Maximal bounds on received asynchronous PDUs */ |
| 21 | #define ISERT_MAX_TX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */ |
| 22 | |
| 23 | #define ISERT_MAX_RX_MISC_PDUS 6 /* NOOP_OUT(2), TEXT(1), * |
| 24 | * SCSI_TMFUNC(2), LOGOUT(1) */ |
| 25 | |
| 26 | #define ISCSI_DEF_XMIT_CMDS_MAX 128 /* from libiscsi.h, must be power of 2 */ |
| 27 | |
| 28 | #define ISERT_QP_MAX_RECV_DTOS (ISCSI_DEF_XMIT_CMDS_MAX) |
| 29 | |
| 30 | #define ISERT_MIN_POSTED_RX (ISCSI_DEF_XMIT_CMDS_MAX >> 2) |
| 31 | |
| 32 | #define ISERT_INFLIGHT_DATAOUTS 8 |
| 33 | |
| 34 | #define ISERT_QP_MAX_REQ_DTOS (ISCSI_DEF_XMIT_CMDS_MAX * \ |
| 35 | (1 + ISERT_INFLIGHT_DATAOUTS) + \ |
| 36 | ISERT_MAX_TX_MISC_PDUS + \ |
| 37 | ISERT_MAX_RX_MISC_PDUS) |
| 38 | |
| 39 | #define ISER_RX_PAD_SIZE (ISER_RECV_DATA_SEG_LEN + 4096 - \ |
| 40 | (ISER_RX_PAYLOAD_SIZE + sizeof(u64) + sizeof(struct ib_sge))) |
| 41 | |
| 42 | #define ISER_VER 0x10 |
| 43 | #define ISER_WSV 0x08 |
| 44 | #define ISER_RSV 0x04 |
| 45 | #define ISCSI_CTRL 0x10 |
| 46 | #define ISER_HELLO 0x20 |
| 47 | #define ISER_HELLORPLY 0x30 |
