c3673464eb
This patch implements the cxgb3i iscsi connection acceleration for the open-iscsi initiator. The cxgb3i driver offers the iscsi PDU based offload: - digest insertion and verification - payload direct-placement into host memory buffer. Signed-off-by: Karen Xie <kxie@chelsio.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* cxgb3i_ulp2.h: Chelsio S3xx iSCSI driver.
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*
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* Copyright (c) 2008 Chelsio Communications, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Karen Xie (kxie@chelsio.com)
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*/
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#ifndef __CXGB3I_ULP2_PDU_H__
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#define __CXGB3I_ULP2_PDU_H__
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struct cpl_iscsi_hdr_norss {
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union opcode_tid ot;
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u16 pdu_len_ddp;
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u16 len;
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u32 seq;
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u16 urg;
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u8 rsvd;
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u8 status;
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};
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struct cpl_rx_data_ddp_norss {
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union opcode_tid ot;
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u16 urg;
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u16 len;
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u32 seq;
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u32 nxt_seq;
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u32 ulp_crc;
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u32 ddp_status;
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};
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#define RX_DDP_STATUS_IPP_SHIFT 27 /* invalid pagepod */
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#define RX_DDP_STATUS_TID_SHIFT 26 /* tid mismatch */
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#define RX_DDP_STATUS_COLOR_SHIFT 25 /* color mismatch */
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#define RX_DDP_STATUS_OFFSET_SHIFT 24 /* offset mismatch */
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#define RX_DDP_STATUS_ULIMIT_SHIFT 23 /* ulimit error */
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#define RX_DDP_STATUS_TAG_SHIFT 22 /* tag mismatch */
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#define RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */
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#define RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */
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#define RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */
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#define RX_DDP_STATUS_PPP_SHIFT 18 /* pagepod parity error */
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#define RX_DDP_STATUS_LLIMIT_SHIFT 17 /* llimit error */
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#define RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */
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#define RX_DDP_STATUS_PMM_SHIFT 15 /* pagepod mismatch */
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#define ULP2_FLAG_DATA_READY 0x1
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#define ULP2_FLAG_DATA_DDPED 0x2
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#define ULP2_FLAG_HCRC_ERROR 0x10
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#define ULP2_FLAG_DCRC_ERROR 0x20
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#define ULP2_FLAG_PAD_ERROR 0x40
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void cxgb3i_conn_closing(struct s3_conn *);
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void cxgb3i_conn_pdu_ready(struct s3_conn *c3cn);
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void cxgb3i_conn_tx_open(struct s3_conn *c3cn);
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#endif
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