From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: Re: [PATCH] SIW: iWARP Protocol headers Date: Tue, 05 Oct 2010 08:53:30 -0500 Message-ID: <4CAB2DDA.1020207@opengridcomputing.com> References: <1286261630-5085-1-git-send-email-bmt@zurich.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Bernard Metzler Return-path: In-Reply-To: <1286261630-5085-1-git-send-email-bmt-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On 10/05/2010 01:53 AM, Bernard Metzler wrote: > --- > 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__)); > + > All of the above header structures should use __beXX types since the fields are all in Network Byte Order. Also, did you run sparse on the patches (Documentation/sparse.txt)? > +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 > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html