forked from Minki/linux
add9d6be3d
The driver's interaction with the host nvme transport has been incorrect for a while. The driver did not wait for the unregister callbacks (waited only 5 jiffies). Thus the driver may remove objects that may be referenced by subsequent abort commands from the transport, and the actual unregister callback was effectively a noop. This was especially problematic if the driver was unloaded. The driver now waits for the unregister callbacks, as it should, before continuing with teardown. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
105 lines
3.6 KiB
C
105 lines
3.6 KiB
C
/*******************************************************************
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* This file is part of the Emulex Linux Device Driver for *
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* Fibre Channel Host Bus Adapters. *
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* Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
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* “Broadcom” refers to Broadcom Limited and/or its subsidiaries. *
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* Copyright (C) 2004-2016 Emulex. All rights reserved. *
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* EMULEX and SLI are trademarks of Emulex. *
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* www.broadcom.com *
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* Portions Copyright (C) 2004-2005 Christoph Hellwig *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of version 2 of the GNU General *
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* Public License as published by the Free Software Foundation. *
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* This program is distributed in the hope that it will be useful. *
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* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
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* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
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* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
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* TO BE LEGALLY INVALID. See the GNU General Public License for *
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* more details, a copy of which can be found in the file COPYING *
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* included with this package. *
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********************************************************************/
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#define LPFC_NVME_DEFAULT_SEGS (64 + 1) /* 256K IOs */
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#define LPFC_NVME_WQSIZE 1024
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#define LPFC_NVME_CQSIZE 4096
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#define LPFC_NVME_ERSP_LEN 0x20
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#define LPFC_NVME_WAIT_TMO 10
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struct lpfc_nvme_qhandle {
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uint32_t index; /* WQ index to use */
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uint32_t qidx; /* queue index passed to create */
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uint32_t cpu_id; /* current cpu id at time of create */
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};
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/* Declare nvme-based local and remote port definitions. */
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struct lpfc_nvme_lport {
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struct lpfc_vport *vport;
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struct completion lport_unreg_done;
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/* Add sttats counters here */
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};
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struct lpfc_nvme_rport {
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struct lpfc_nvme_lport *lport;
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struct nvme_fc_remote_port *remoteport;
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struct lpfc_nodelist *ndlp;
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struct completion rport_unreg_done;
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};
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struct lpfc_nvme_buf {
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struct list_head list;
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struct nvmefc_fcp_req *nvmeCmd;
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struct lpfc_nvme_rport *nrport;
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struct lpfc_nodelist *ndlp;
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uint32_t timeout;
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uint16_t flags; /* TBD convert exch_busy to flags */
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#define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */
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uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */
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uint16_t status; /* From IOCB Word 7- ulpStatus */
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uint16_t cpu;
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uint16_t qidx;
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uint16_t sqid;
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uint32_t result; /* From IOCB Word 4. */
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uint32_t seg_cnt; /* Number of scatter-gather segments returned by
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* dma_map_sg. The driver needs this for calls
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* to dma_unmap_sg.
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*/
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dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
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/*
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* data and dma_handle are the kernel virtual and bus address of the
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* dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
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* gather bde list that supports the sg_tablesize value.
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*/
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void *data;
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dma_addr_t dma_handle;
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struct sli4_sge *nvme_sgl;
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dma_addr_t dma_phys_sgl;
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/* cur_iocbq has phys of the dma-able buffer.
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* Iotag is in here
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*/
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struct lpfc_iocbq cur_iocbq;
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wait_queue_head_t *waitq;
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unsigned long start_time;
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#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
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uint64_t ts_cmd_start;
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uint64_t ts_last_cmd;
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uint64_t ts_cmd_wqput;
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uint64_t ts_isr_cmpl;
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uint64_t ts_data_nvme;
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#endif
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};
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struct lpfc_nvme_fcpreq_priv {
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struct lpfc_nvme_buf *nvme_buf;
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};
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