From patchwork Tue Oct 5 06:53:50 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bernard Metzler X-Patchwork-Id: 66756 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 22691B70A3 for ; Tue, 5 Oct 2010 17:54:33 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757631Ab0JEGxy (ORCPT ); Tue, 5 Oct 2010 02:53:54 -0400 Received: from mtagate7.de.ibm.com ([195.212.17.167]:52071 "EHLO mtagate7.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757625Ab0JEGxw (ORCPT ); Tue, 5 Oct 2010 02:53:52 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate7.de.ibm.com (8.13.1/8.13.1) with ESMTP id o956rpcQ021049; Tue, 5 Oct 2010 06:53:51 GMT Received: from d12av03.megacenter.de.ibm.com (d12av03.megacenter.de.ibm.com [9.149.165.213]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o956rpFj3633180; Tue, 5 Oct 2010 08:53:51 +0200 Received: from d12av03.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av03.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id o956roaX023364; Tue, 5 Oct 2010 08:53:51 +0200 Received: from inn.zurich.ibm.com (inn.zurich.ibm.com [9.4.4.229]) by d12av03.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id o956ro5m023357; Tue, 5 Oct 2010 08:53:50 +0200 Received: from localhost.localdomain (achilles.zurich.ibm.com [9.4.243.2]) by inn.zurich.ibm.com (AIX5.3/8.13.4/8.13.4) with ESMTP id o956roXf770220; Tue, 5 Oct 2010 08:53:50 +0200 From: Bernard Metzler To: netdev@vger.kernel.org Cc: linux-rdma@vger.kernel.org, Bernard Metzler Subject: [PATCH] SIW: iWARP Protocol headers Date: Tue, 5 Oct 2010 08:53:50 +0200 Message-Id: <1286261630-5085-1-git-send-email-bmt@zurich.ibm.com> X-Mailer: git-send-email 1.5.4.3 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --- 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..762c1d3 --- /dev/null +++ b/drivers/infiniband/hw/siw/iwarp.h @@ -0,0 +1,324 @@ +/* + * Software iWARP device driver for Linux + * + * Authors: Bernard Metzler + * Fredy Neeser + * + * Copyright (c) 2008-2010, 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_MAX_PRIVATE_DATA */ +#include +#include + + +#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) + __u16 res:5, + r:1, + c:1, + m:1, + rev:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u16 m:1, + c:1, + r:1, + res:5, + rev:8; +#else +#error "Adjust your defines" +#endif + __u16 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 { + __u16 rsvd; + __u16 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]; + __u32 crc; +}; + +#define MPA_CRC_SIZE 4 + + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for any FPDU + */ +struct iwarp_ctrl { + __u16 mpa_len; +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u16 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) + __u16 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 defines" +#endif +}; + + +struct rdmap_terminate_ctrl { +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u32 etype:4, + layer:4, + ecode:8, + rsvd1:5, + r:1, + d:1, + m:1, + rsvd2:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u32 layer:4, + etype:4, + ecode:8, + m:1, + d:1, + r:1, + rsvd1:5, + rsvd2:8; +#else +#error "Adjust your defines" +#endif +}; + + +struct iwarp_rdma_write { + struct iwarp_ctrl ctrl; + __u32 sink_stag; + __u64 sink_to; +} __attribute__((__packed__)); + +struct iwarp_rdma_rreq { + struct iwarp_ctrl ctrl; + __u32 rsvd; + __u32 ddp_qn; + __u32 ddp_msn; + __u32 ddp_mo; + __u32 sink_stag; + __u64 sink_to; + __u32 read_size; + __u32 source_stag; + __u64 source_to; +} __attribute__((__packed__)); + +struct iwarp_rdma_rresp { + struct iwarp_ctrl ctrl; + __u32 sink_stag; + __u64 sink_to; +} __attribute__((__packed__)); + +struct iwarp_send { + struct iwarp_ctrl ctrl; + __u32 rsvd; + __u32 ddp_qn; + __u32 ddp_msn; + __u32 ddp_mo; +} __attribute__((__packed__)); + +struct iwarp_send_inv { + struct iwarp_ctrl ctrl; + __u32 inval_stag; + __u32 ddp_qn; + __u32 ddp_msn; + __u32 ddp_mo; +} __attribute__((__packed__)); + +struct iwarp_terminate { + struct iwarp_ctrl ctrl; + __u32 rsvd; + __u32 ddp_qn; + __u32 ddp_msn; + __u32 ddp_mo; + struct rdmap_terminate_ctrl term_ctrl; +} __attribute__((__packed__)); + + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for an FPDU carrying an untagged DDP segment + */ +struct iwarp_ctrl_untagged { + struct iwarp_ctrl ctrl; + __u32 rsvd; + __u32 ddp_qn; + __u32 ddp_msn; + __u32 ddp_mo; +} __attribute__((__packed__)); + +/* + * Common portion of iWARP headers (MPA, DDP, RDMAP) + * for an FPDU carrying a tagged DDP segment + */ +struct iwarp_ctrl_tagged { + struct iwarp_ctrl ctrl; + __u32 ddp_stag; + __u64 ddp_to; +} __attribute__((__packed__)); + +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