--- drivers/infiniband/hw/siw/iwarp.h | 324 +++++++++++++++++++++++++++++++++++++ 1 files changed, 324 insertions(+), 0 deletions(-) create mode 100644 drivers/infiniband/hw/siw/iwarp.h
diff --git a/drivers/infiniband/hw/siw/iwarp.h b/drivers/infiniband/hw/siw/iwarp.h new file mode 100644 index 0000000..5aebd86 --- /dev/null +++ b/drivers/infiniband/hw/siw/iwarp.h @@ -0,0 +1,324 @@ +/* + * Software iWARP device driver for Linux + * + * Authors: Bernard Metzler <[email protected]> + * Fredy Neeser <[email protected]> + * + * Copyright (c) 2008-2011, IBM Corporation + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of IBM nor the names of its contributors may be + * used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _IWARP_H +#define _IWARP_H + +#include <rdma/rdma_user_cm.h> /* RDMA_MAX_PRIVATE_DATA */ +#include <linux/types.h> +#include <asm/byteorder.h> + + +#define RDMAP_VERSION 1 +#define DDP_VERSION 1 +#define MPA_REVISION_1 1 +#define MPA_MAX_PRIVDATA RDMA_MAX_PRIVATE_DATA +#define MPA_KEY_REQ "MPA ID Req Frame" +#define MPA_KEY_REP "MPA ID Rep Frame" + +struct mpa_rr_params { +#if defined(__LITTLE_ENDIAN_BITFIELD) + __be16 res:5, + r:1, + c:1, + m:1, + rev:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __be16 m:1, + c:1, + r:1, + res:5, + rev:8; +#else +#error "Adjust your <asm/byteorder.h> defines" +#endif + __be16 pd_len; +}; + +/* + * MPA request/reply header + */ +struct mpa_rr { + __u8 key[16]; + struct mpa_rr_params params; +}; + +/* + * Don't change the layout/size of this struct! + */ +struct mpa_marker { + __be16 rsvd; + __be16 fpdu_hmd; /* FPDU header-marker distance (= MPA's FPDUPTR) */ +}; + +#define MPA_MARKER_SPACING 512 +#define MPA_HDR_SIZE 2 + +/* + * MPA marker size: + * - Standards-compliant marker insertion: Use sizeof(struct mpa_marker) + * - "Invisible markers" for testing sender's marker insertion + * without affecting receiver: Use 0 + */ +#define MPA_MARKER_SIZE sizeof(struct mpa_marker) + + +/* + * maximum MPA trailer + */ +struct mpa_trailer { + char pad[4]; + __be32 crc; +}; + +#define MPA_CRC_SIZE 4 + + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for any FPDU + */ +struct iwarp_ctrl { + __be16 mpa_len; +#if defined(__LITTLE_ENDIAN_BITFIELD) + __be16 dv:2, /* DDP Version */ + rsvd:4, /* DDP reserved, MBZ */ + l:1, /* DDP Last flag */ + t:1, /* DDP Tagged flag */ + opcode:4, /* RDMAP opcode */ + rsv:2, /* RDMAP reserved, MBZ */ + rv:2; /* RDMAP Version, 01 for IETF, 00 for RDMAC */ +#elif defined(__BIG_ENDIAN_BITFIELD) + __be16 t:1, /* DDP Tagged flag */ + l:1, /* DDP Last flag */ + rsvd:4, /* DDP reserved, MBZ */ + dv:2, /* DDP Version */ + rv:2, /* RDMAP Version, 01 for IETF, 00 for RDMAC */ + rsv:2, /* RDMAP reserved, MBZ */ + opcode:4; /* RDMAP opcode */ +#else +#error "Adjust your <asm/byteorder.h> defines" +#endif +}; + + +struct rdmap_terminate_ctrl { +#if defined(__LITTLE_ENDIAN_BITFIELD) + __be32 etype:4, + layer:4, + ecode:8, + rsvd1:5, + r:1, + d:1, + m:1, + rsvd2:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __be32 layer:4, + etype:4, + ecode:8, + m:1, + d:1, + r:1, + rsvd1:5, + rsvd2:8; +#else +#error "Adjust your <asm/byteorder.h> defines" +#endif +}; + + +struct iwarp_rdma_write { + struct iwarp_ctrl ctrl; + __be32 sink_stag; + __be64 sink_to; +}; + +struct iwarp_rdma_rreq { + struct iwarp_ctrl ctrl; + __be32 rsvd; + __be32 ddp_qn; + __be32 ddp_msn; + __be32 ddp_mo; + __be32 sink_stag; + __be64 sink_to; + __be32 read_size; + __be32 source_stag; + __be64 source_to; +}; + +struct iwarp_rdma_rresp { + struct iwarp_ctrl ctrl; + __be32 sink_stag; + __be64 sink_to; +}; + +struct iwarp_send { + struct iwarp_ctrl ctrl; + __be32 rsvd; + __be32 ddp_qn; + __be32 ddp_msn; + __be32 ddp_mo; +}; + +struct iwarp_send_inv { + struct iwarp_ctrl ctrl; + __be32 inval_stag; + __be32 ddp_qn; + __be32 ddp_msn; + __be32 ddp_mo; +}; + +struct iwarp_terminate { + struct iwarp_ctrl ctrl; + __be32 rsvd; + __be32 ddp_qn; + __be32 ddp_msn; + __be32 ddp_mo; + struct rdmap_terminate_ctrl term_ctrl; +}; + + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for an FPDU carrying an untagged DDP segment + */ +struct iwarp_ctrl_untagged { + struct iwarp_ctrl ctrl; + __be32 rsvd; + __be32 ddp_qn; + __be32 ddp_msn; + __be32 ddp_mo; +}; + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for an FPDU carrying a tagged DDP segment + */ +struct iwarp_ctrl_tagged { + struct iwarp_ctrl ctrl; + __be32 ddp_stag; + __be64 ddp_to; +}; + +union iwarp_hdrs { + struct iwarp_ctrl ctrl; + struct iwarp_ctrl_untagged c_untagged; + struct iwarp_ctrl_tagged c_tagged; + struct iwarp_rdma_write rwrite; + struct iwarp_rdma_rreq rreq; + struct iwarp_rdma_rresp rresp; + struct iwarp_terminate terminate; + struct iwarp_send send; + struct iwarp_send_inv send_inv; +}; + + +#define MPA_MIN_FRAG ((sizeof(union iwarp_hdrs) + MPA_CRC_SIZE)) + +enum ddp_etype { + DDP_ETYPE_CATASTROPHIC = 0x0, + DDP_ETYPE_TAGGED_BUF = 0x1, + DDP_ETYPE_UNTAGGED_BUF = 0x2, + DDP_ETYPE_RSVD = 0x3 +}; + +enum ddp_ecode { + DDP_ECODE_CATASTROPHIC = 0x00, + /* Tagged Buffer Errors */ + DDP_ECODE_T_INVALID_STAG = 0x00, + DDP_ECODE_T_BASE_BOUNDS = 0x01, + DDP_ECODE_T_STAG_NOT_ASSOC = 0x02, + DDP_ECODE_T_TO_WRAP = 0x03, + DDP_ECODE_T_DDP_VERSION = 0x04, + /* Untagged Buffer Errors */ + DDP_ECODE_UT_INVALID_QN = 0x01, + DDP_ECODE_UT_INVALID_MSN_NOBUF = 0x02, + DDP_ECODE_UT_INVALID_MSN_RANGE = 0x03, + DDP_ECODE_UT_INVALID_MO = 0x04, + DDP_ECODE_UT_MSG_TOOLONG = 0x05, + DDP_ECODE_UT_DDP_VERSION = 0x06 +}; + + +enum rdmap_untagged_qn { + RDMAP_UNTAGGED_QN_SEND = 0, + RDMAP_UNTAGGED_QN_RDMA_READ = 1, + RDMAP_UNTAGGED_QN_TERMINATE = 2, + RDMAP_UNTAGGED_QN_COUNT = 3 +}; + +enum rdmap_etype { + RDMAP_ETYPE_CATASTROPHIC = 0x0, + RDMAP_ETYPE_REMOTE_PROTECTION = 0x1, + RDMAP_ETYPE_REMOTE_OPERATION = 0x2 +}; + +enum rdmap_ecode { + RDMAP_ECODE_INVALID_STAG = 0x00, + RDMAP_ECODE_BASE_BOUNDS = 0x01, + RDMAP_ECODE_ACCESS_RIGHTS = 0x02, + RDMAP_ECODE_STAG_NOT_ASSOC = 0x03, + RDMAP_ECODE_TO_WRAP = 0x04, + RDMAP_ECODE_RDMAP_VERSION = 0x05, + RDMAP_ECODE_UNEXPECTED_OPCODE = 0x06, + RDMAP_ECODE_CATASTROPHIC_STREAM = 0x07, + RDMAP_ECODE_CATASTROPHIC_GLOBAL = 0x08, + RDMAP_ECODE_STAG_NOT_INVALIDATE = 0x09, + RDMAP_ECODE_UNSPECIFIED = 0xff +}; + +enum rdmap_elayer { + RDMAP_ERROR_LAYER_RDMA = 0x00, + RDMAP_ERROR_LAYER_DDP = 0x01, + RDMAP_ERROR_LAYER_LLP = 0x02 /* eg., MPA */ +}; + +enum rdma_opcode { + RDMAP_RDMA_WRITE = 0x0, + RDMAP_RDMA_READ_REQ = 0x1, + RDMAP_RDMA_READ_RESP = 0x2, + RDMAP_SEND = 0x3, + RDMAP_SEND_INVAL = 0x4, + RDMAP_SEND_SE = 0x5, + RDMAP_SEND_SE_INVAL = 0x6, + RDMAP_TERMINATE = 0x7, + RDMAP_NOT_SUPPORTED = RDMAP_TERMINATE + 1 +}; + +#endif -- 1.5.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
