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532 lines
15 KiB
532 lines
15 KiB
/* |
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* Copyright(c) 2015 - 2018 Intel Corporation. |
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* |
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* This file is provided under a dual BSD/GPLv2 license. When using or |
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* redistributing this file, you may do so under either license. |
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* |
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* GPL LICENSE SUMMARY |
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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 version 2 of the GNU General Public License as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* BSD LICENSE |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* - Neither the name of Intel Corporation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef HFI1_VERBS_H |
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#define HFI1_VERBS_H |
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|
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#include <linux/types.h> |
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#include <linux/seqlock.h> |
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#include <linux/kernel.h> |
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#include <linux/interrupt.h> |
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#include <linux/kref.h> |
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#include <linux/workqueue.h> |
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#include <linux/kthread.h> |
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#include <linux/completion.h> |
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#include <linux/slab.h> |
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#include <rdma/ib_pack.h> |
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#include <rdma/ib_user_verbs.h> |
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#include <rdma/ib_mad.h> |
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#include <rdma/ib_hdrs.h> |
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#include <rdma/rdma_vt.h> |
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#include <rdma/rdmavt_qp.h> |
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#include <rdma/rdmavt_cq.h> |
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struct hfi1_ctxtdata; |
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struct hfi1_pportdata; |
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struct hfi1_devdata; |
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struct hfi1_packet; |
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|
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#include "iowait.h" |
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#include "tid_rdma.h" |
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#include "opfn.h" |
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|
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#define HFI1_MAX_RDMA_ATOMIC 16 |
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|
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/* |
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* Increment this value if any changes that break userspace ABI |
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* compatibility are made. |
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*/ |
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#define HFI1_UVERBS_ABI_VERSION 2 |
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|
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/* IB Performance Manager status values */ |
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#define IB_PMA_SAMPLE_STATUS_DONE 0x00 |
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#define IB_PMA_SAMPLE_STATUS_STARTED 0x01 |
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#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02 |
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|
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/* Mandatory IB performance counter select values. */ |
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#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001) |
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#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002) |
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#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003) |
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#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004) |
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#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005) |
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#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0) |
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#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL) |
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#define OPA_BTH_MIG_REQ BIT(31) |
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#define RC_OP(x) IB_OPCODE_RC_##x |
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#define UC_OP(x) IB_OPCODE_UC_##x |
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|
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/* flags passed by hfi1_ib_rcv() */ |
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enum { |
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HFI1_HAS_GRH = (1 << 0), |
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}; |
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#define LRH_16B_BYTES (sizeof_field(struct hfi1_16b_header, lrh)) |
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#define LRH_16B_DWORDS (LRH_16B_BYTES / sizeof(u32)) |
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#define LRH_9B_BYTES (sizeof_field(struct ib_header, lrh)) |
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#define LRH_9B_DWORDS (LRH_9B_BYTES / sizeof(u32)) |
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/* 24Bits for qpn, upper 8Bits reserved */ |
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struct opa_16b_mgmt { |
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__be32 dest_qpn; |
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__be32 src_qpn; |
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}; |
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struct hfi1_16b_header { |
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u32 lrh[4]; |
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union { |
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struct { |
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struct ib_grh grh; |
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struct ib_other_headers oth; |
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} l; |
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struct ib_other_headers oth; |
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struct opa_16b_mgmt mgmt; |
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} u; |
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} __packed; |
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struct hfi1_opa_header { |
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union { |
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struct ib_header ibh; /* 9B header */ |
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struct hfi1_16b_header opah; /* 16B header */ |
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}; |
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u8 hdr_type; /* 9B or 16B */ |
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} __packed; |
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struct hfi1_ahg_info { |
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u32 ahgdesc[2]; |
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u16 tx_flags; |
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u8 ahgcount; |
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u8 ahgidx; |
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}; |
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struct hfi1_sdma_header { |
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__le64 pbc; |
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struct hfi1_opa_header hdr; |
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} __packed; |
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/* |
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* hfi1 specific data structures that will be hidden from rvt after the queue |
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* pair is made common |
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*/ |
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struct hfi1_qp_priv { |
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struct hfi1_ahg_info *s_ahg; /* ahg info for next header */ |
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struct sdma_engine *s_sde; /* current sde */ |
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struct send_context *s_sendcontext; /* current sendcontext */ |
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struct hfi1_ctxtdata *rcd; /* QP's receive context */ |
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struct page **pages; /* for TID page scan */ |
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u32 tid_enqueue; /* saved when tid waited */ |
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u8 s_sc; /* SC[0..4] for next packet */ |
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struct iowait s_iowait; |
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struct timer_list s_tid_timer; /* for timing tid wait */ |
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struct timer_list s_tid_retry_timer; /* for timing tid ack */ |
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struct list_head tid_wait; /* for queueing tid space */ |
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struct hfi1_opfn_data opfn; |
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struct tid_flow_state flow_state; |
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struct tid_rdma_qp_params tid_rdma; |
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struct rvt_qp *owner; |
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u16 s_running_pkt_size; |
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u8 hdr_type; /* 9B or 16B */ |
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struct rvt_sge_state tid_ss; /* SGE state pointer for 2nd leg */ |
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atomic_t n_requests; /* # of TID RDMA requests in the */ |
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/* queue */ |
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atomic_t n_tid_requests; /* # of sent TID RDMA requests */ |
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unsigned long tid_timer_timeout_jiffies; |
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unsigned long tid_retry_timeout_jiffies; |
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|
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/* variables for the TID RDMA SE state machine */ |
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u8 s_state; |
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u8 s_retry; |
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u8 rnr_nak_state; /* RNR NAK state */ |
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u8 s_nak_state; |
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u32 s_nak_psn; |
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u32 s_flags; |
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u32 s_tid_cur; |
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u32 s_tid_head; |
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u32 s_tid_tail; |
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u32 r_tid_head; /* Most recently added TID RDMA request */ |
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u32 r_tid_tail; /* the last completed TID RDMA request */ |
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u32 r_tid_ack; /* the TID RDMA request to be ACK'ed */ |
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u32 r_tid_alloc; /* Request for which we are allocating resources */ |
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u32 pending_tid_w_segs; /* Num of pending tid write segments */ |
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u32 pending_tid_w_resp; /* Num of pending tid write responses */ |
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u32 alloc_w_segs; /* Number of segments for which write */ |
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/* resources have been allocated for this QP */ |
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/* For TID RDMA READ */ |
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u32 tid_r_reqs; /* Num of tid reads requested */ |
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u32 tid_r_comp; /* Num of tid reads completed */ |
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u32 pending_tid_r_segs; /* Num of pending tid read segments */ |
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u16 pkts_ps; /* packets per segment */ |
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u8 timeout_shift; /* account for number of packets per segment */ |
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u32 r_next_psn_kdeth; |
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u32 r_next_psn_kdeth_save; |
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u32 s_resync_psn; |
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u8 sync_pt; /* Set when QP reaches sync point */ |
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u8 resync; |
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}; |
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#define HFI1_QP_WQE_INVALID ((u32)-1) |
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struct hfi1_swqe_priv { |
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struct tid_rdma_request tid_req; |
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struct rvt_sge_state ss; /* Used for TID RDMA READ Request */ |
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}; |
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struct hfi1_ack_priv { |
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struct rvt_sge_state ss; /* used for TID WRITE RESP */ |
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struct tid_rdma_request tid_req; |
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}; |
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/* |
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* This structure is used to hold commonly lookedup and computed values during |
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* the send engine progress. |
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*/ |
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struct iowait_work; |
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struct hfi1_pkt_state { |
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struct hfi1_ibdev *dev; |
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struct hfi1_ibport *ibp; |
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struct hfi1_pportdata *ppd; |
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struct verbs_txreq *s_txreq; |
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struct iowait_work *wait; |
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unsigned long flags; |
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unsigned long timeout; |
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unsigned long timeout_int; |
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int cpu; |
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u8 opcode; |
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bool in_thread; |
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bool pkts_sent; |
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}; |
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#define HFI1_PSN_CREDIT 16 |
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struct hfi1_opcode_stats { |
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u64 n_packets; /* number of packets */ |
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u64 n_bytes; /* total number of bytes */ |
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}; |
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struct hfi1_opcode_stats_perctx { |
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struct hfi1_opcode_stats stats[256]; |
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}; |
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static inline void inc_opstats( |
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u32 tlen, |
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struct hfi1_opcode_stats *stats) |
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{ |
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#ifdef CONFIG_DEBUG_FS |
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stats->n_bytes += tlen; |
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stats->n_packets++; |
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#endif |
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} |
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struct hfi1_ibport { |
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struct rvt_qp __rcu *qp[2]; |
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struct rvt_ibport rvp; |
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/* the first 16 entries are sl_to_vl for !OPA */ |
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u8 sl_to_sc[32]; |
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u8 sc_to_sl[32]; |
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}; |
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struct hfi1_ibdev { |
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struct rvt_dev_info rdi; /* Must be first */ |
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/* QP numbers are shared by all IB ports */ |
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/* protect txwait list */ |
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seqlock_t txwait_lock ____cacheline_aligned_in_smp; |
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struct list_head txwait; /* list for wait verbs_txreq */ |
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struct list_head memwait; /* list for wait kernel memory */ |
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struct kmem_cache *verbs_txreq_cache; |
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u64 n_txwait; |
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u64 n_kmem_wait; |
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u64 n_tidwait; |
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/* protect iowait lists */ |
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seqlock_t iowait_lock ____cacheline_aligned_in_smp; |
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u64 n_piowait; |
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u64 n_piodrain; |
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struct timer_list mem_timer; |
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#ifdef CONFIG_DEBUG_FS |
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/* per HFI debugfs */ |
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struct dentry *hfi1_ibdev_dbg; |
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/* per HFI symlinks to above */ |
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struct dentry *hfi1_ibdev_link; |
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#ifdef CONFIG_FAULT_INJECTION |
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struct fault *fault; |
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#endif |
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#endif |
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}; |
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static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev) |
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{ |
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struct rvt_dev_info *rdi; |
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rdi = container_of(ibdev, struct rvt_dev_info, ibdev); |
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return container_of(rdi, struct hfi1_ibdev, rdi); |
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} |
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static inline struct rvt_qp *iowait_to_qp(struct iowait *s_iowait) |
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{ |
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struct hfi1_qp_priv *priv; |
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priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait); |
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return priv->owner; |
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} |
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/* |
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* This must be called with s_lock held. |
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*/ |
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void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl, |
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u32 qp1, u32 qp2, u32 lid1, u32 lid2); |
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void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num); |
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void hfi1_sys_guid_chg(struct hfi1_ibport *ibp); |
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void hfi1_node_desc_chg(struct hfi1_ibport *ibp); |
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int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, |
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const struct ib_wc *in_wc, const struct ib_grh *in_grh, |
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const struct ib_mad *in_mad, struct ib_mad *out_mad, |
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size_t *out_mad_size, u16 *out_mad_pkey_index); |
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/* |
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* The PSN_MASK and PSN_SHIFT allow for |
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* 1) comparing two PSNs |
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* 2) returning the PSN with any upper bits masked |
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* 3) returning the difference between to PSNs |
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* |
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* The number of significant bits in the PSN must |
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* necessarily be at least one bit less than |
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* the container holding the PSN. |
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*/ |
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#define PSN_MASK 0x7FFFFFFF |
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#define PSN_SHIFT 1 |
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#define PSN_MODIFY_MASK 0xFFFFFF |
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/* |
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* Compare two PSNs |
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* Returns an integer <, ==, or > than zero. |
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*/ |
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static inline int cmp_psn(u32 a, u32 b) |
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{ |
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return (((int)a) - ((int)b)) << PSN_SHIFT; |
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} |
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/* |
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* Return masked PSN |
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*/ |
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static inline u32 mask_psn(u32 a) |
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{ |
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return a & PSN_MASK; |
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} |
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/* |
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* Return delta between two PSNs |
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*/ |
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static inline u32 delta_psn(u32 a, u32 b) |
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{ |
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return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT; |
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} |
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static inline struct tid_rdma_request *wqe_to_tid_req(struct rvt_swqe *wqe) |
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{ |
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return &((struct hfi1_swqe_priv *)wqe->priv)->tid_req; |
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} |
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static inline struct tid_rdma_request *ack_to_tid_req(struct rvt_ack_entry *e) |
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{ |
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return &((struct hfi1_ack_priv *)e->priv)->tid_req; |
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} |
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/* |
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* Look through all the active flows for a TID RDMA request and find |
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* the one (if it exists) that contains the specified PSN. |
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*/ |
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static inline u32 __full_flow_psn(struct flow_state *state, u32 psn) |
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{ |
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return mask_psn((state->generation << HFI1_KDETH_BTH_SEQ_SHIFT) | |
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(psn & HFI1_KDETH_BTH_SEQ_MASK)); |
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} |
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static inline u32 full_flow_psn(struct tid_rdma_flow *flow, u32 psn) |
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{ |
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return __full_flow_psn(&flow->flow_state, psn); |
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} |
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struct verbs_txreq; |
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void hfi1_put_txreq(struct verbs_txreq *tx); |
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int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps); |
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void hfi1_cnp_rcv(struct hfi1_packet *packet); |
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void hfi1_uc_rcv(struct hfi1_packet *packet); |
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void hfi1_rc_rcv(struct hfi1_packet *packet); |
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void hfi1_rc_hdrerr( |
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struct hfi1_ctxtdata *rcd, |
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struct hfi1_packet *packet, |
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struct rvt_qp *qp); |
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u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr); |
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void hfi1_rc_verbs_aborted(struct rvt_qp *qp, struct hfi1_opa_header *opah); |
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void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah); |
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void hfi1_ud_rcv(struct hfi1_packet *packet); |
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int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey); |
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void hfi1_migrate_qp(struct rvt_qp *qp); |
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int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr, |
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int attr_mask, struct ib_udata *udata); |
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void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr, |
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int attr_mask, struct ib_udata *udata); |
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void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait); |
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int hfi1_setup_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe, |
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bool *call_send); |
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extern const u32 rc_only_opcode; |
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extern const u32 uc_only_opcode; |
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int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet); |
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u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr, |
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const struct ib_global_route *grh, u32 hwords, u32 nwords); |
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void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr, |
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u32 bth0, u32 bth1, u32 bth2, int middle, |
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struct hfi1_pkt_state *ps); |
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bool hfi1_schedule_send_yield(struct rvt_qp *qp, struct hfi1_pkt_state *ps, |
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bool tid); |
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void _hfi1_do_send(struct work_struct *work); |
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void hfi1_do_send_from_rvt(struct rvt_qp *qp); |
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void hfi1_do_send(struct rvt_qp *qp, bool in_thread); |
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void hfi1_send_rc_ack(struct hfi1_packet *packet, bool is_fecn); |
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int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps); |
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int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps); |
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int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps); |
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int hfi1_register_ib_device(struct hfi1_devdata *); |
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void hfi1_unregister_ib_device(struct hfi1_devdata *); |
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void hfi1_kdeth_eager_rcv(struct hfi1_packet *packet); |
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void hfi1_kdeth_expected_rcv(struct hfi1_packet *packet); |
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void hfi1_ib_rcv(struct hfi1_packet *packet); |
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void hfi1_16B_rcv(struct hfi1_packet *packet); |
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unsigned hfi1_get_npkeys(struct hfi1_devdata *); |
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int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps, |
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u64 pbc); |
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int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, |
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u64 pbc); |
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static inline bool opa_bth_is_migration(struct ib_other_headers *ohdr) |
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{ |
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return ohdr->bth[1] & cpu_to_be32(OPA_BTH_MIG_REQ); |
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} |
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void hfi1_wait_kmem(struct rvt_qp *qp); |
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static inline void hfi1_trdma_send_complete(struct rvt_qp *qp, |
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struct rvt_swqe *wqe, |
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enum ib_wc_status status) |
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{ |
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trdma_clean_swqe(qp, wqe); |
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rvt_send_complete(qp, wqe, status); |
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} |
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extern const enum ib_wc_opcode ib_hfi1_wc_opcode[]; |
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extern const u8 hdr_len_by_opcode[]; |
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extern const int ib_rvt_state_ops[]; |
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extern __be64 ib_hfi1_sys_image_guid; /* in network order */ |
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extern unsigned int hfi1_max_cqes; |
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extern unsigned int hfi1_max_cqs; |
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extern unsigned int hfi1_max_qp_wrs; |
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extern unsigned int hfi1_max_qps; |
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extern unsigned int hfi1_max_sges; |
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extern unsigned int hfi1_max_mcast_grps; |
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extern unsigned int hfi1_max_mcast_qp_attached; |
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extern unsigned int hfi1_max_srqs; |
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extern unsigned int hfi1_max_srq_sges; |
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extern unsigned int hfi1_max_srq_wrs; |
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extern unsigned short piothreshold; |
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extern const u32 ib_hfi1_rnr_table[]; |
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#endif /* HFI1_VERBS_H */
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