[PATCH] SIW: iWARP Protocol headers

Bernard Metzler
2010-10-05T06:53:50Z

---
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 <bmt@zurich.ibm.com>
+ * Fredy Neeser <nfd@zurich.ibm.com>
+ *
+ * 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/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)
+ __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 <asm/byteorder.h> 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 <asm/byteorder.h> 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 <asm/byteorder.h> 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
--
1.5.4.3