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![Mike Christie](/assets/img/avatar_default.png)
[ Upstream commit 857b06527f
]
We set the qedi_ep state to EP_STATE_OFLDCONN_START when the ep is
created. Then in qedi_set_path we kick off the offload work. If userspace
times out the connection and calls ep_disconnect, qedi will only flush the
offload work if the qedi_ep state has transitioned away from
EP_STATE_OFLDCONN_START. If we can't connect we will not have transitioned
state and will leave the offload work running, and we will free the qedi_ep
from under it.
This patch just has us init the work when we create the ep, then always
flush it.
Link: https://lore.kernel.org/r/20220408001314.5014-10-michael.christie@oracle.com
Tested-by: Manish Rangankar <mrangankar@marvell.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
1709 lines
44 KiB
C
1709 lines
44 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* QLogic iSCSI Offload Driver
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* Copyright (c) 2016 Cavium Inc.
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*/
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#include <linux/blkdev.h>
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#include <linux/etherdevice.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <scsi/scsi_tcq.h>
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#include "qedi.h"
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#include "qedi_iscsi.h"
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#include "qedi_gbl.h"
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int qedi_recover_all_conns(struct qedi_ctx *qedi)
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{
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struct qedi_conn *qedi_conn;
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int i;
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for (i = 0; i < qedi->max_active_conns; i++) {
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qedi_conn = qedi_get_conn_from_id(qedi, i);
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if (!qedi_conn)
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continue;
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qedi_start_conn_recovery(qedi, qedi_conn);
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}
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return SUCCESS;
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}
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static int qedi_eh_host_reset(struct scsi_cmnd *cmd)
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{
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struct Scsi_Host *shost = cmd->device->host;
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struct qedi_ctx *qedi;
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qedi = iscsi_host_priv(shost);
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return qedi_recover_all_conns(qedi);
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}
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struct scsi_host_template qedi_host_template = {
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.module = THIS_MODULE,
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.name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver",
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.proc_name = QEDI_MODULE_NAME,
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.queuecommand = iscsi_queuecommand,
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.eh_timed_out = iscsi_eh_cmd_timed_out,
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.eh_abort_handler = iscsi_eh_abort,
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.eh_device_reset_handler = iscsi_eh_device_reset,
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.eh_target_reset_handler = iscsi_eh_recover_target,
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.eh_host_reset_handler = qedi_eh_host_reset,
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.target_alloc = iscsi_target_alloc,
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.change_queue_depth = scsi_change_queue_depth,
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.can_queue = QEDI_MAX_ISCSI_TASK,
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.this_id = -1,
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.sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD,
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.max_sectors = 0xffff,
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.dma_boundary = QEDI_HW_DMA_BOUNDARY,
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.cmd_per_lun = 128,
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.shost_groups = qedi_shost_groups,
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};
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static void qedi_conn_free_login_resources(struct qedi_ctx *qedi,
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struct qedi_conn *qedi_conn)
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{
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if (qedi_conn->gen_pdu.resp_bd_tbl) {
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dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
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qedi_conn->gen_pdu.resp_bd_tbl,
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qedi_conn->gen_pdu.resp_bd_dma);
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qedi_conn->gen_pdu.resp_bd_tbl = NULL;
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}
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if (qedi_conn->gen_pdu.req_bd_tbl) {
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dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
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qedi_conn->gen_pdu.req_bd_tbl,
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qedi_conn->gen_pdu.req_bd_dma);
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qedi_conn->gen_pdu.req_bd_tbl = NULL;
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}
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if (qedi_conn->gen_pdu.resp_buf) {
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dma_free_coherent(&qedi->pdev->dev,
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ISCSI_DEF_MAX_RECV_SEG_LEN,
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qedi_conn->gen_pdu.resp_buf,
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qedi_conn->gen_pdu.resp_dma_addr);
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qedi_conn->gen_pdu.resp_buf = NULL;
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}
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if (qedi_conn->gen_pdu.req_buf) {
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dma_free_coherent(&qedi->pdev->dev,
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ISCSI_DEF_MAX_RECV_SEG_LEN,
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qedi_conn->gen_pdu.req_buf,
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qedi_conn->gen_pdu.req_dma_addr);
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qedi_conn->gen_pdu.req_buf = NULL;
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}
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}
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static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi,
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struct qedi_conn *qedi_conn)
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{
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qedi_conn->gen_pdu.req_buf =
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dma_alloc_coherent(&qedi->pdev->dev,
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ISCSI_DEF_MAX_RECV_SEG_LEN,
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&qedi_conn->gen_pdu.req_dma_addr,
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GFP_KERNEL);
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if (!qedi_conn->gen_pdu.req_buf)
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goto login_req_buf_failure;
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qedi_conn->gen_pdu.req_buf_size = 0;
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qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf;
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qedi_conn->gen_pdu.resp_buf =
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dma_alloc_coherent(&qedi->pdev->dev,
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ISCSI_DEF_MAX_RECV_SEG_LEN,
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&qedi_conn->gen_pdu.resp_dma_addr,
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GFP_KERNEL);
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if (!qedi_conn->gen_pdu.resp_buf)
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goto login_resp_buf_failure;
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qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN;
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qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf;
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qedi_conn->gen_pdu.req_bd_tbl =
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dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
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&qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL);
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if (!qedi_conn->gen_pdu.req_bd_tbl)
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goto login_req_bd_tbl_failure;
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qedi_conn->gen_pdu.resp_bd_tbl =
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dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
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&qedi_conn->gen_pdu.resp_bd_dma,
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GFP_KERNEL);
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if (!qedi_conn->gen_pdu.resp_bd_tbl)
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goto login_resp_bd_tbl_failure;
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS,
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"Allocation successful, cid=0x%x\n",
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qedi_conn->iscsi_conn_id);
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return 0;
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login_resp_bd_tbl_failure:
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dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
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qedi_conn->gen_pdu.req_bd_tbl,
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qedi_conn->gen_pdu.req_bd_dma);
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qedi_conn->gen_pdu.req_bd_tbl = NULL;
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login_req_bd_tbl_failure:
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dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
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qedi_conn->gen_pdu.resp_buf,
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qedi_conn->gen_pdu.resp_dma_addr);
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qedi_conn->gen_pdu.resp_buf = NULL;
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login_resp_buf_failure:
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dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
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qedi_conn->gen_pdu.req_buf,
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qedi_conn->gen_pdu.req_dma_addr);
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qedi_conn->gen_pdu.req_buf = NULL;
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login_req_buf_failure:
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iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data,
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"login resource alloc failed!!\n");
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return -ENOMEM;
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}
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static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi,
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struct iscsi_session *session)
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{
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int i;
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for (i = 0; i < session->cmds_max; i++) {
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struct iscsi_task *task = session->cmds[i];
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struct qedi_cmd *cmd = task->dd_data;
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if (cmd->io_tbl.sge_tbl)
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dma_free_coherent(&qedi->pdev->dev,
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QEDI_ISCSI_MAX_BDS_PER_CMD *
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sizeof(struct scsi_sge),
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cmd->io_tbl.sge_tbl,
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cmd->io_tbl.sge_tbl_dma);
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if (cmd->sense_buffer)
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dma_free_coherent(&qedi->pdev->dev,
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SCSI_SENSE_BUFFERSIZE,
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cmd->sense_buffer,
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cmd->sense_buffer_dma);
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}
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}
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static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session,
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struct qedi_cmd *cmd)
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{
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struct qedi_io_bdt *io = &cmd->io_tbl;
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struct scsi_sge *sge;
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io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev,
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QEDI_ISCSI_MAX_BDS_PER_CMD *
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sizeof(*sge),
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&io->sge_tbl_dma, GFP_KERNEL);
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if (!io->sge_tbl) {
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iscsi_session_printk(KERN_ERR, session,
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"Could not allocate BD table.\n");
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return -ENOMEM;
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}
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io->sge_valid = 0;
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return 0;
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}
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static int qedi_setup_cmd_pool(struct qedi_ctx *qedi,
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struct iscsi_session *session)
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{
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int i;
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for (i = 0; i < session->cmds_max; i++) {
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struct iscsi_task *task = session->cmds[i];
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struct qedi_cmd *cmd = task->dd_data;
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task->hdr = &cmd->hdr;
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task->hdr_max = sizeof(struct iscsi_hdr);
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if (qedi_alloc_sget(qedi, session, cmd))
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goto free_sgets;
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cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev,
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SCSI_SENSE_BUFFERSIZE,
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&cmd->sense_buffer_dma,
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GFP_KERNEL);
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if (!cmd->sense_buffer)
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goto free_sgets;
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}
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return 0;
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free_sgets:
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qedi_destroy_cmd_pool(qedi, session);
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return -ENOMEM;
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}
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static struct iscsi_cls_session *
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qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max,
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u16 qdepth, uint32_t initial_cmdsn)
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{
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struct Scsi_Host *shost;
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struct iscsi_cls_session *cls_session;
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struct qedi_ctx *qedi;
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struct qedi_endpoint *qedi_ep;
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if (!ep)
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return NULL;
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qedi_ep = ep->dd_data;
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shost = qedi_ep->qedi->shost;
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qedi = iscsi_host_priv(shost);
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if (cmds_max > qedi->max_sqes)
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cmds_max = qedi->max_sqes;
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else if (cmds_max < QEDI_SQ_WQES_MIN)
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cmds_max = QEDI_SQ_WQES_MIN;
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cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost,
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cmds_max, 0, sizeof(struct qedi_cmd),
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initial_cmdsn, ISCSI_MAX_TARGET);
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if (!cls_session) {
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QEDI_ERR(&qedi->dbg_ctx,
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"Failed to setup session for ep=%p\n", qedi_ep);
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return NULL;
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}
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if (qedi_setup_cmd_pool(qedi, cls_session->dd_data)) {
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QEDI_ERR(&qedi->dbg_ctx,
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"Failed to setup cmd pool for ep=%p\n", qedi_ep);
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goto session_teardown;
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}
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return cls_session;
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session_teardown:
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iscsi_session_teardown(cls_session);
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return NULL;
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}
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static void qedi_session_destroy(struct iscsi_cls_session *cls_session)
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{
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struct iscsi_session *session = cls_session->dd_data;
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struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
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struct qedi_ctx *qedi = iscsi_host_priv(shost);
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qedi_destroy_cmd_pool(qedi, session);
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iscsi_session_teardown(cls_session);
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}
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static struct iscsi_cls_conn *
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qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
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{
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struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
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struct qedi_ctx *qedi = iscsi_host_priv(shost);
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struct iscsi_cls_conn *cls_conn;
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struct qedi_conn *qedi_conn;
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struct iscsi_conn *conn;
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cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn),
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cid);
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if (!cls_conn) {
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QEDI_ERR(&qedi->dbg_ctx,
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"conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n",
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cid, cls_session);
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return NULL;
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}
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conn = cls_conn->dd_data;
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qedi_conn = conn->dd_data;
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qedi_conn->cls_conn = cls_conn;
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qedi_conn->qedi = qedi;
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qedi_conn->ep = NULL;
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qedi_conn->active_cmd_count = 0;
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INIT_LIST_HEAD(&qedi_conn->active_cmd_list);
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spin_lock_init(&qedi_conn->list_lock);
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if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) {
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iscsi_conn_printk(KERN_ALERT, conn,
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"conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n",
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cid, cls_session);
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goto free_conn;
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}
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return cls_conn;
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free_conn:
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iscsi_conn_teardown(cls_conn);
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return NULL;
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}
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void qedi_mark_device_missing(struct iscsi_cls_session *cls_session)
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{
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struct iscsi_session *session = cls_session->dd_data;
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struct qedi_conn *qedi_conn = session->leadconn->dd_data;
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spin_lock_bh(&session->frwd_lock);
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set_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags);
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spin_unlock_bh(&session->frwd_lock);
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}
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void qedi_mark_device_available(struct iscsi_cls_session *cls_session)
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{
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struct iscsi_session *session = cls_session->dd_data;
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struct qedi_conn *qedi_conn = session->leadconn->dd_data;
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spin_lock_bh(&session->frwd_lock);
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clear_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags);
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spin_unlock_bh(&session->frwd_lock);
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}
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|
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static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi,
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struct qedi_conn *qedi_conn)
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{
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u32 iscsi_cid = qedi_conn->iscsi_conn_id;
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if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) {
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iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
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"conn bind - entry #%d not free\n",
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iscsi_cid);
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return -EBUSY;
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}
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qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn;
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return 0;
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}
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struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid)
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{
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if (!qedi->cid_que.conn_cid_tbl) {
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QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n");
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return NULL;
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|
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} else if (iscsi_cid >= qedi->max_active_conns) {
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QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid);
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return NULL;
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}
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return qedi->cid_que.conn_cid_tbl[iscsi_cid];
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}
|
|
|
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static int qedi_conn_bind(struct iscsi_cls_session *cls_session,
|
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struct iscsi_cls_conn *cls_conn,
|
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u64 transport_fd, int is_leading)
|
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{
|
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struct iscsi_conn *conn = cls_conn->dd_data;
|
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struct qedi_conn *qedi_conn = conn->dd_data;
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struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
|
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struct qedi_ctx *qedi = iscsi_host_priv(shost);
|
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struct qedi_endpoint *qedi_ep;
|
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struct iscsi_endpoint *ep;
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int rc = 0;
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|
|
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ep = iscsi_lookup_endpoint(transport_fd);
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if (!ep)
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return -EINVAL;
|
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|
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qedi_ep = ep->dd_data;
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if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) ||
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(qedi_ep->state == EP_STATE_TCP_RST_RCVD)) {
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rc = -EINVAL;
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goto put_ep;
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}
|
|
|
|
if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) {
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rc = -EINVAL;
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goto put_ep;
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}
|
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|
|
|
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qedi_ep->conn = qedi_conn;
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qedi_conn->ep = qedi_ep;
|
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qedi_conn->iscsi_ep = ep;
|
|
qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid;
|
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qedi_conn->fw_cid = qedi_ep->fw_cid;
|
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qedi_conn->cmd_cleanup_req = 0;
|
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atomic_set(&qedi_conn->cmd_cleanup_cmpl, 0);
|
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|
|
if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) {
|
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rc = -EINVAL;
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goto put_ep;
|
|
}
|
|
|
|
|
|
spin_lock_init(&qedi_conn->tmf_work_lock);
|
|
INIT_LIST_HEAD(&qedi_conn->tmf_work_list);
|
|
init_waitqueue_head(&qedi_conn->wait_queue);
|
|
put_ep:
|
|
iscsi_put_endpoint(ep);
|
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return rc;
|
|
}
|
|
|
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static int qedi_iscsi_update_conn(struct qedi_ctx *qedi,
|
|
struct qedi_conn *qedi_conn)
|
|
{
|
|
struct qed_iscsi_params_update *conn_info;
|
|
struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn;
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct qedi_endpoint *qedi_ep;
|
|
int rval;
|
|
|
|
qedi_ep = qedi_conn->ep;
|
|
|
|
conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
|
|
if (!conn_info) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
conn_info->update_flag = 0;
|
|
|
|
if (conn->hdrdgst_en)
|
|
SET_FIELD(conn_info->update_flag,
|
|
ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true);
|
|
if (conn->datadgst_en)
|
|
SET_FIELD(conn_info->update_flag,
|
|
ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true);
|
|
if (conn->session->initial_r2t_en)
|
|
SET_FIELD(conn_info->update_flag,
|
|
ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T,
|
|
true);
|
|
if (conn->session->imm_data_en)
|
|
SET_FIELD(conn_info->update_flag,
|
|
ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA,
|
|
true);
|
|
|
|
conn_info->max_seq_size = conn->session->max_burst;
|
|
conn_info->max_recv_pdu_length = conn->max_recv_dlength;
|
|
conn_info->max_send_pdu_length = conn->max_xmit_dlength;
|
|
conn_info->first_seq_length = conn->session->first_burst;
|
|
conn_info->exp_stat_sn = conn->exp_statsn;
|
|
|
|
rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle,
|
|
conn_info);
|
|
if (rval) {
|
|
rval = -ENXIO;
|
|
QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n");
|
|
}
|
|
|
|
kfree(conn_info);
|
|
return rval;
|
|
}
|
|
|
|
static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en)
|
|
{
|
|
u16 mss = 0;
|
|
u16 hdrs = TCP_HDR_LEN;
|
|
|
|
if (is_ipv6)
|
|
hdrs += IPV6_HDR_LEN;
|
|
else
|
|
hdrs += IPV4_HDR_LEN;
|
|
|
|
mss = pmtu - hdrs;
|
|
|
|
if (!mss)
|
|
mss = DEF_MSS;
|
|
|
|
return mss;
|
|
}
|
|
|
|
static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep)
|
|
{
|
|
struct qed_iscsi_params_offload *conn_info;
|
|
struct qedi_ctx *qedi = qedi_ep->qedi;
|
|
int rval;
|
|
int i;
|
|
|
|
conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
|
|
if (!conn_info) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Failed to allocate memory ep=%p\n", qedi_ep);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac);
|
|
ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac);
|
|
|
|
conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]);
|
|
conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]);
|
|
|
|
if (qedi_ep->ip_type == TCP_IPV4) {
|
|
conn_info->ip_version = 0;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"After ntohl: src_addr=%pI4, dst_addr=%pI4\n",
|
|
qedi_ep->src_addr, qedi_ep->dst_addr);
|
|
} else {
|
|
for (i = 1; i < 4; i++) {
|
|
conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]);
|
|
conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]);
|
|
}
|
|
|
|
conn_info->ip_version = 1;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"After ntohl: src_addr=%pI6, dst_addr=%pI6\n",
|
|
qedi_ep->src_addr, qedi_ep->dst_addr);
|
|
}
|
|
|
|
conn_info->src.port = qedi_ep->src_port;
|
|
conn_info->dst.port = qedi_ep->dst_port;
|
|
|
|
conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE;
|
|
conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma;
|
|
conn_info->vlan_id = qedi_ep->vlan_id;
|
|
|
|
SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1);
|
|
SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1);
|
|
SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1);
|
|
SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1);
|
|
|
|
conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues);
|
|
|
|
conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT;
|
|
conn_info->dup_ack_theshold = 3;
|
|
conn_info->rcv_wnd = 65535;
|
|
|
|
conn_info->ss_thresh = 65535;
|
|
conn_info->srtt = 300;
|
|
conn_info->rtt_var = 150;
|
|
conn_info->flow_label = 0;
|
|
conn_info->ka_timeout = DEF_KA_TIMEOUT;
|
|
conn_info->ka_interval = DEF_KA_INTERVAL;
|
|
conn_info->max_rt_time = DEF_MAX_RT_TIME;
|
|
conn_info->ttl = DEF_TTL;
|
|
conn_info->tos_or_tc = DEF_TOS;
|
|
conn_info->remote_port = qedi_ep->dst_port;
|
|
conn_info->local_port = qedi_ep->src_port;
|
|
|
|
conn_info->mss = qedi_calc_mss(qedi_ep->pmtu,
|
|
(qedi_ep->ip_type == TCP_IPV6),
|
|
1, (qedi_ep->vlan_id != 0));
|
|
|
|
conn_info->cwnd = DEF_MAX_CWND * conn_info->mss;
|
|
conn_info->rcv_wnd_scale = 4;
|
|
conn_info->da_timeout_value = 200;
|
|
conn_info->ack_frequency = 2;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Default cq index [%d], mss [%d]\n",
|
|
conn_info->default_cq, conn_info->mss);
|
|
|
|
/* Prepare the doorbell parameters */
|
|
qedi_ep->db_data.agg_flags = 0;
|
|
qedi_ep->db_data.params = 0;
|
|
SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_DEST, DB_DEST_XCM);
|
|
SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_CMD,
|
|
DB_AGG_CMD_MAX);
|
|
SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_VAL_SEL,
|
|
DQ_XCM_ISCSI_SQ_PROD_CMD);
|
|
SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_BYPASS_EN, 1);
|
|
|
|
/* Register doorbell with doorbell recovery mechanism */
|
|
rval = qedi_ops->common->db_recovery_add(qedi->cdev,
|
|
qedi_ep->p_doorbell,
|
|
&qedi_ep->db_data,
|
|
DB_REC_WIDTH_32B,
|
|
DB_REC_KERNEL);
|
|
if (rval) {
|
|
kfree(conn_info);
|
|
return rval;
|
|
}
|
|
|
|
rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info);
|
|
if (rval) {
|
|
/* delete doorbell from doorbell recovery mechanism */
|
|
rval = qedi_ops->common->db_recovery_del(qedi->cdev,
|
|
qedi_ep->p_doorbell,
|
|
&qedi_ep->db_data);
|
|
|
|
QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n",
|
|
rval, qedi_ep);
|
|
}
|
|
|
|
kfree(conn_info);
|
|
return rval;
|
|
}
|
|
|
|
static int qedi_conn_start(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct qedi_conn *qedi_conn = conn->dd_data;
|
|
struct qedi_ctx *qedi;
|
|
int rval;
|
|
|
|
qedi = qedi_conn->qedi;
|
|
|
|
rval = qedi_iscsi_update_conn(qedi, qedi_conn);
|
|
if (rval) {
|
|
iscsi_conn_printk(KERN_ALERT, conn,
|
|
"conn_start: FW offload conn failed.\n");
|
|
rval = -EINVAL;
|
|
goto start_err;
|
|
}
|
|
|
|
spin_lock(&qedi_conn->tmf_work_lock);
|
|
qedi_conn->fw_cleanup_works = 0;
|
|
qedi_conn->ep_disconnect_starting = false;
|
|
spin_unlock(&qedi_conn->tmf_work_lock);
|
|
|
|
qedi_conn->abrt_conn = 0;
|
|
|
|
rval = iscsi_conn_start(cls_conn);
|
|
if (rval) {
|
|
iscsi_conn_printk(KERN_ALERT, conn,
|
|
"iscsi_conn_start: FW offload conn failed!!\n");
|
|
}
|
|
|
|
start_err:
|
|
return rval;
|
|
}
|
|
|
|
static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct qedi_conn *qedi_conn = conn->dd_data;
|
|
struct Scsi_Host *shost;
|
|
struct qedi_ctx *qedi;
|
|
|
|
shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
|
|
qedi = iscsi_host_priv(shost);
|
|
|
|
qedi_conn_free_login_resources(qedi, qedi_conn);
|
|
iscsi_conn_teardown(cls_conn);
|
|
}
|
|
|
|
static int qedi_ep_get_param(struct iscsi_endpoint *ep,
|
|
enum iscsi_param param, char *buf)
|
|
{
|
|
struct qedi_endpoint *qedi_ep = ep->dd_data;
|
|
int len;
|
|
|
|
if (!qedi_ep)
|
|
return -ENOTCONN;
|
|
|
|
switch (param) {
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
len = sprintf(buf, "%hu\n", qedi_ep->dst_port);
|
|
break;
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
if (qedi_ep->ip_type == TCP_IPV4)
|
|
len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr);
|
|
else
|
|
len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr);
|
|
break;
|
|
default:
|
|
return -ENOTCONN;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int qedi_host_get_param(struct Scsi_Host *shost,
|
|
enum iscsi_host_param param, char *buf)
|
|
{
|
|
struct qedi_ctx *qedi;
|
|
int len;
|
|
|
|
qedi = iscsi_host_priv(shost);
|
|
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
len = sysfs_format_mac(buf, qedi->mac, 6);
|
|
break;
|
|
case ISCSI_HOST_PARAM_NETDEV_NAME:
|
|
len = sprintf(buf, "host%d\n", shost->host_no);
|
|
break;
|
|
case ISCSI_HOST_PARAM_IPADDRESS:
|
|
if (qedi->ip_type == TCP_IPV4)
|
|
len = sprintf(buf, "%pI4\n", qedi->src_ip);
|
|
else
|
|
len = sprintf(buf, "%pI6\n", qedi->src_ip);
|
|
break;
|
|
default:
|
|
return iscsi_host_get_param(shost, param, buf);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
|
|
struct iscsi_stats *stats)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct qed_iscsi_stats iscsi_stats;
|
|
struct Scsi_Host *shost;
|
|
struct qedi_ctx *qedi;
|
|
|
|
shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
|
|
qedi = iscsi_host_priv(shost);
|
|
qedi_ops->get_stats(qedi->cdev, &iscsi_stats);
|
|
|
|
conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt;
|
|
conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt;
|
|
conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt;
|
|
conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt;
|
|
conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt;
|
|
|
|
stats->txdata_octets = conn->txdata_octets;
|
|
stats->rxdata_octets = conn->rxdata_octets;
|
|
stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
|
|
stats->dataout_pdus = conn->dataout_pdus_cnt;
|
|
stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
|
|
stats->datain_pdus = conn->datain_pdus_cnt;
|
|
stats->r2t_pdus = conn->r2t_pdus_cnt;
|
|
stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
|
|
stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
|
|
stats->digest_err = 0;
|
|
stats->timeout_err = 0;
|
|
strcpy(stats->custom[0].desc, "eh_abort_cnt");
|
|
stats->custom[0].value = conn->eh_abort_cnt;
|
|
stats->custom_length = 1;
|
|
}
|
|
|
|
static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn)
|
|
{
|
|
struct scsi_sge *bd_tbl;
|
|
|
|
bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
|
|
|
|
bd_tbl->sge_addr.hi =
|
|
(u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
|
|
bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr;
|
|
bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr -
|
|
qedi_conn->gen_pdu.req_buf;
|
|
bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
|
|
bd_tbl->sge_addr.hi =
|
|
(u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
|
|
bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr;
|
|
bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN;
|
|
}
|
|
|
|
static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
|
|
{
|
|
struct qedi_cmd *cmd = task->dd_data;
|
|
struct qedi_conn *qedi_conn = cmd->conn;
|
|
char *buf;
|
|
int data_len;
|
|
int rc = 0;
|
|
|
|
qedi_iscsi_prep_generic_pdu_bd(qedi_conn);
|
|
switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
|
|
case ISCSI_OP_LOGIN:
|
|
qedi_send_iscsi_login(qedi_conn, task);
|
|
break;
|
|
case ISCSI_OP_NOOP_OUT:
|
|
data_len = qedi_conn->gen_pdu.req_buf_size;
|
|
buf = qedi_conn->gen_pdu.req_buf;
|
|
if (data_len)
|
|
rc = qedi_send_iscsi_nopout(qedi_conn, task,
|
|
buf, data_len, 1);
|
|
else
|
|
rc = qedi_send_iscsi_nopout(qedi_conn, task,
|
|
NULL, 0, 1);
|
|
break;
|
|
case ISCSI_OP_LOGOUT:
|
|
rc = qedi_send_iscsi_logout(qedi_conn, task);
|
|
break;
|
|
case ISCSI_OP_SCSI_TMFUNC:
|
|
rc = qedi_send_iscsi_tmf(qedi_conn, task);
|
|
break;
|
|
case ISCSI_OP_TEXT:
|
|
rc = qedi_send_iscsi_text(qedi_conn, task);
|
|
break;
|
|
default:
|
|
iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
|
|
"unsupported op 0x%x\n", task->hdr->opcode);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
|
|
{
|
|
struct qedi_conn *qedi_conn = conn->dd_data;
|
|
struct qedi_cmd *cmd = task->dd_data;
|
|
|
|
memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
|
|
|
|
qedi_conn->gen_pdu.req_buf_size = task->data_count;
|
|
|
|
if (task->data_count) {
|
|
memcpy(qedi_conn->gen_pdu.req_buf, task->data,
|
|
task->data_count);
|
|
qedi_conn->gen_pdu.req_wr_ptr =
|
|
qedi_conn->gen_pdu.req_buf + task->data_count;
|
|
}
|
|
|
|
cmd->conn = conn->dd_data;
|
|
return qedi_iscsi_send_generic_request(task);
|
|
}
|
|
|
|
static int qedi_task_xmit(struct iscsi_task *task)
|
|
{
|
|
struct iscsi_conn *conn = task->conn;
|
|
struct qedi_conn *qedi_conn = conn->dd_data;
|
|
struct qedi_cmd *cmd = task->dd_data;
|
|
struct scsi_cmnd *sc = task->sc;
|
|
|
|
/* Clear now so in cleanup_task we know it didn't make it */
|
|
cmd->scsi_cmd = NULL;
|
|
cmd->task_id = U16_MAX;
|
|
|
|
if (test_bit(QEDI_IN_SHUTDOWN, &qedi_conn->qedi->flags))
|
|
return -ENODEV;
|
|
|
|
if (test_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags))
|
|
return -EACCES;
|
|
|
|
cmd->state = 0;
|
|
cmd->task = NULL;
|
|
cmd->use_slowpath = false;
|
|
cmd->conn = qedi_conn;
|
|
cmd->task = task;
|
|
cmd->io_cmd_in_list = false;
|
|
INIT_LIST_HEAD(&cmd->io_cmd);
|
|
|
|
if (!sc)
|
|
return qedi_mtask_xmit(conn, task);
|
|
|
|
cmd->scsi_cmd = sc;
|
|
return qedi_iscsi_send_ioreq(task);
|
|
}
|
|
|
|
static void qedi_offload_work(struct work_struct *work)
|
|
{
|
|
struct qedi_endpoint *qedi_ep =
|
|
container_of(work, struct qedi_endpoint, offload_work);
|
|
struct qedi_ctx *qedi;
|
|
int wait_delay = 5 * HZ;
|
|
int ret;
|
|
|
|
qedi = qedi_ep->qedi;
|
|
|
|
ret = qedi_iscsi_offload_conn(qedi_ep);
|
|
if (ret) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
|
|
qedi_ep->iscsi_cid, qedi_ep, ret);
|
|
qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
|
|
return;
|
|
}
|
|
|
|
ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
|
|
(qedi_ep->state ==
|
|
EP_STATE_OFLDCONN_COMPL),
|
|
wait_delay);
|
|
if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) {
|
|
qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
|
|
qedi_ep->iscsi_cid, qedi_ep);
|
|
}
|
|
}
|
|
|
|
static struct iscsi_endpoint *
|
|
qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
|
|
int non_blocking)
|
|
{
|
|
struct qedi_ctx *qedi;
|
|
struct iscsi_endpoint *ep;
|
|
struct qedi_endpoint *qedi_ep;
|
|
struct sockaddr_in *addr;
|
|
struct sockaddr_in6 *addr6;
|
|
struct iscsi_path path_req;
|
|
u32 msg_type = ISCSI_KEVENT_IF_DOWN;
|
|
u32 iscsi_cid = QEDI_CID_RESERVED;
|
|
u16 len = 0;
|
|
char *buf = NULL;
|
|
int ret, tmp;
|
|
|
|
if (!shost) {
|
|
ret = -ENXIO;
|
|
QEDI_ERR(NULL, "shost is NULL\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
if (qedi_do_not_recover) {
|
|
ret = -ENOMEM;
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
qedi = iscsi_host_priv(shost);
|
|
|
|
if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) ||
|
|
test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
|
|
ret = -ENOMEM;
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) {
|
|
QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n");
|
|
return ERR_PTR(-ENXIO);
|
|
}
|
|
|
|
ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint));
|
|
if (!ep) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n");
|
|
ret = -ENOMEM;
|
|
return ERR_PTR(ret);
|
|
}
|
|
qedi_ep = ep->dd_data;
|
|
memset(qedi_ep, 0, sizeof(struct qedi_endpoint));
|
|
INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
|
|
qedi_ep->state = EP_STATE_IDLE;
|
|
qedi_ep->iscsi_cid = (u32)-1;
|
|
qedi_ep->qedi = qedi;
|
|
|
|
if (dst_addr->sa_family == AF_INET) {
|
|
addr = (struct sockaddr_in *)dst_addr;
|
|
memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
qedi_ep->dst_port = ntohs(addr->sin_port);
|
|
qedi_ep->ip_type = TCP_IPV4;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"dst_addr=%pI4, dst_port=%u\n",
|
|
qedi_ep->dst_addr, qedi_ep->dst_port);
|
|
} else if (dst_addr->sa_family == AF_INET6) {
|
|
addr6 = (struct sockaddr_in6 *)dst_addr;
|
|
memcpy(qedi_ep->dst_addr, &addr6->sin6_addr,
|
|
sizeof(struct in6_addr));
|
|
qedi_ep->dst_port = ntohs(addr6->sin6_port);
|
|
qedi_ep->ip_type = TCP_IPV6;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"dst_addr=%pI6, dst_port=%u\n",
|
|
qedi_ep->dst_addr, qedi_ep->dst_port);
|
|
} else {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n");
|
|
}
|
|
|
|
ret = qedi_alloc_sq(qedi, qedi_ep);
|
|
if (ret)
|
|
goto ep_conn_exit;
|
|
|
|
ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle,
|
|
&qedi_ep->fw_cid, &qedi_ep->p_doorbell);
|
|
|
|
if (ret) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n");
|
|
ret = -ENXIO;
|
|
goto ep_free_sq;
|
|
}
|
|
|
|
iscsi_cid = qedi_ep->handle;
|
|
qedi_ep->iscsi_cid = iscsi_cid;
|
|
|
|
init_waitqueue_head(&qedi_ep->ofld_wait);
|
|
init_waitqueue_head(&qedi_ep->tcp_ofld_wait);
|
|
qedi_ep->state = EP_STATE_OFLDCONN_START;
|
|
qedi->ep_tbl[iscsi_cid] = qedi_ep;
|
|
|
|
buf = (char *)&path_req;
|
|
len = sizeof(path_req);
|
|
memset(&path_req, 0, len);
|
|
|
|
msg_type = ISCSI_KEVENT_PATH_REQ;
|
|
path_req.handle = (u64)qedi_ep->iscsi_cid;
|
|
path_req.pmtu = qedi->ll2_mtu;
|
|
qedi_ep->pmtu = qedi->ll2_mtu;
|
|
if (qedi_ep->ip_type == TCP_IPV4) {
|
|
memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr,
|
|
sizeof(struct in_addr));
|
|
path_req.ip_addr_len = 4;
|
|
} else {
|
|
memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr,
|
|
sizeof(struct in6_addr));
|
|
path_req.ip_addr_len = 16;
|
|
}
|
|
|
|
ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf,
|
|
len);
|
|
if (ret) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"iscsi_offload_mesg() failed for cid=0x%x ret=%d\n",
|
|
iscsi_cid, ret);
|
|
goto ep_rel_conn;
|
|
}
|
|
|
|
atomic_inc(&qedi->num_offloads);
|
|
return ep;
|
|
|
|
ep_rel_conn:
|
|
qedi->ep_tbl[iscsi_cid] = NULL;
|
|
tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
|
|
if (tmp)
|
|
QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n",
|
|
tmp);
|
|
ep_free_sq:
|
|
qedi_free_sq(qedi, qedi_ep);
|
|
ep_conn_exit:
|
|
iscsi_destroy_endpoint(ep);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
|
|
{
|
|
struct qedi_endpoint *qedi_ep;
|
|
int ret = 0;
|
|
|
|
if (qedi_do_not_recover)
|
|
return 1;
|
|
|
|
qedi_ep = ep->dd_data;
|
|
if (qedi_ep->state == EP_STATE_IDLE ||
|
|
qedi_ep->state == EP_STATE_OFLDCONN_NONE ||
|
|
qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
|
|
return -1;
|
|
|
|
if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL)
|
|
ret = 1;
|
|
|
|
ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait,
|
|
QEDI_OFLD_WAIT_STATE(qedi_ep),
|
|
msecs_to_jiffies(timeout_ms));
|
|
|
|
if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
|
|
ret = -1;
|
|
|
|
if (ret > 0)
|
|
return 1;
|
|
else if (!ret)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn)
|
|
{
|
|
struct qedi_cmd *cmd, *cmd_tmp;
|
|
|
|
spin_lock(&qedi_conn->list_lock);
|
|
list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
|
|
io_cmd) {
|
|
list_del_init(&cmd->io_cmd);
|
|
qedi_conn->active_cmd_count--;
|
|
}
|
|
spin_unlock(&qedi_conn->list_lock);
|
|
}
|
|
|
|
static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
|
|
{
|
|
struct qedi_endpoint *qedi_ep;
|
|
struct qedi_conn *qedi_conn = NULL;
|
|
struct qedi_ctx *qedi;
|
|
int ret = 0;
|
|
int wait_delay;
|
|
int abrt_conn = 0;
|
|
|
|
wait_delay = 60 * HZ + DEF_MAX_RT_TIME;
|
|
qedi_ep = ep->dd_data;
|
|
qedi = qedi_ep->qedi;
|
|
|
|
flush_work(&qedi_ep->offload_work);
|
|
|
|
if (qedi_ep->state == EP_STATE_OFLDCONN_START)
|
|
goto ep_exit_recover;
|
|
|
|
if (qedi_ep->conn) {
|
|
qedi_conn = qedi_ep->conn;
|
|
abrt_conn = qedi_conn->abrt_conn;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"cid=0x%x qedi_ep=%p waiting for %d tmfs\n",
|
|
qedi_ep->iscsi_cid, qedi_ep,
|
|
qedi_conn->fw_cleanup_works);
|
|
|
|
spin_lock(&qedi_conn->tmf_work_lock);
|
|
qedi_conn->ep_disconnect_starting = true;
|
|
while (qedi_conn->fw_cleanup_works > 0) {
|
|
spin_unlock(&qedi_conn->tmf_work_lock);
|
|
msleep(1000);
|
|
spin_lock(&qedi_conn->tmf_work_lock);
|
|
}
|
|
spin_unlock(&qedi_conn->tmf_work_lock);
|
|
|
|
if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
|
|
if (qedi_do_not_recover) {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Do not recover cid=0x%x\n",
|
|
qedi_ep->iscsi_cid);
|
|
goto ep_exit_recover;
|
|
}
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n",
|
|
qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state);
|
|
qedi_cleanup_active_cmd_list(qedi_conn);
|
|
goto ep_release_conn;
|
|
}
|
|
}
|
|
|
|
if (qedi_do_not_recover)
|
|
goto ep_exit_recover;
|
|
|
|
switch (qedi_ep->state) {
|
|
case EP_STATE_OFLDCONN_START:
|
|
case EP_STATE_OFLDCONN_NONE:
|
|
goto ep_release_conn;
|
|
case EP_STATE_OFLDCONN_FAILED:
|
|
break;
|
|
case EP_STATE_OFLDCONN_COMPL:
|
|
if (unlikely(!qedi_conn))
|
|
break;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n",
|
|
qedi_conn->active_cmd_count, abrt_conn,
|
|
qedi_ep->state,
|
|
qedi_ep->iscsi_cid,
|
|
qedi_ep->conn
|
|
);
|
|
|
|
if (!qedi_conn->active_cmd_count)
|
|
abrt_conn = 0;
|
|
else
|
|
abrt_conn = 1;
|
|
|
|
if (abrt_conn)
|
|
qedi_clearsq(qedi, qedi_conn, NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!abrt_conn)
|
|
wait_delay += qedi->pf_params.iscsi_pf_params.two_msl_timer;
|
|
|
|
qedi_ep->state = EP_STATE_DISCONN_START;
|
|
|
|
if (test_bit(QEDI_IN_SHUTDOWN, &qedi->flags) ||
|
|
test_bit(QEDI_IN_RECOVERY, &qedi->flags))
|
|
goto ep_release_conn;
|
|
|
|
/* Delete doorbell from doorbell recovery mechanism */
|
|
ret = qedi_ops->common->db_recovery_del(qedi->cdev,
|
|
qedi_ep->p_doorbell,
|
|
&qedi_ep->db_data);
|
|
|
|
ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn);
|
|
if (ret) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"destroy_conn failed returned %d\n", ret);
|
|
} else {
|
|
ret = wait_event_interruptible_timeout(
|
|
qedi_ep->tcp_ofld_wait,
|
|
(qedi_ep->state !=
|
|
EP_STATE_DISCONN_START),
|
|
wait_delay);
|
|
if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n",
|
|
ret, wait_delay, qedi_ep->iscsi_cid);
|
|
}
|
|
}
|
|
|
|
ep_release_conn:
|
|
ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
|
|
if (ret)
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"release_conn returned %d, cid=0x%x\n",
|
|
ret, qedi_ep->iscsi_cid);
|
|
ep_exit_recover:
|
|
qedi_ep->state = EP_STATE_IDLE;
|
|
qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL;
|
|
qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL;
|
|
qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port);
|
|
qedi_free_sq(qedi, qedi_ep);
|
|
|
|
if (qedi_conn)
|
|
qedi_conn->ep = NULL;
|
|
|
|
qedi_ep->conn = NULL;
|
|
qedi_ep->qedi = NULL;
|
|
atomic_dec(&qedi->num_offloads);
|
|
|
|
iscsi_destroy_endpoint(ep);
|
|
}
|
|
|
|
static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid)
|
|
{
|
|
struct qed_dev *cdev = qedi->cdev;
|
|
struct qedi_uio_dev *udev;
|
|
struct qedi_uio_ctrl *uctrl;
|
|
struct sk_buff *skb;
|
|
u32 len;
|
|
int rc = 0;
|
|
|
|
udev = qedi->udev;
|
|
if (!udev) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
uctrl = (struct qedi_uio_ctrl *)udev->uctrl;
|
|
if (!uctrl) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
len = uctrl->host_tx_pkt_len;
|
|
if (!len) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len);
|
|
return -EINVAL;
|
|
}
|
|
|
|
skb = alloc_skb(len, GFP_ATOMIC);
|
|
if (!skb) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
skb_put(skb, len);
|
|
memcpy(skb->data, udev->tx_pkt, len);
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
if (vlanid)
|
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid);
|
|
|
|
rc = qedi_ops->ll2->start_xmit(cdev, skb, 0);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n",
|
|
rc);
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
uctrl->host_tx_pkt_len = 0;
|
|
uctrl->hw_tx_cons++;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
|
|
{
|
|
struct qedi_ctx *qedi;
|
|
struct qedi_endpoint *qedi_ep;
|
|
int ret = 0;
|
|
u32 iscsi_cid;
|
|
u16 port_id = 0;
|
|
|
|
if (!shost) {
|
|
ret = -ENXIO;
|
|
QEDI_ERR(NULL, "shost is NULL\n");
|
|
return ret;
|
|
}
|
|
|
|
if (strcmp(shost->hostt->proc_name, "qedi")) {
|
|
ret = -ENXIO;
|
|
QEDI_ERR(NULL, "shost %s is invalid\n",
|
|
shost->hostt->proc_name);
|
|
return ret;
|
|
}
|
|
|
|
qedi = iscsi_host_priv(shost);
|
|
if (path_data->handle == QEDI_PATH_HANDLE) {
|
|
ret = qedi_data_avail(qedi, path_data->vlan_id);
|
|
goto set_path_exit;
|
|
}
|
|
|
|
iscsi_cid = (u32)path_data->handle;
|
|
if (iscsi_cid >= qedi->max_active_conns) {
|
|
ret = -EINVAL;
|
|
goto set_path_exit;
|
|
}
|
|
qedi_ep = qedi->ep_tbl[iscsi_cid];
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep);
|
|
if (!qedi_ep) {
|
|
ret = -EINVAL;
|
|
goto set_path_exit;
|
|
}
|
|
|
|
if (!is_valid_ether_addr(&path_data->mac_addr[0])) {
|
|
QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n");
|
|
qedi_ep->state = EP_STATE_OFLDCONN_NONE;
|
|
ret = -EIO;
|
|
goto set_path_exit;
|
|
}
|
|
|
|
ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]);
|
|
ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]);
|
|
|
|
qedi_ep->vlan_id = path_data->vlan_id;
|
|
if (path_data->pmtu < DEF_PATH_MTU) {
|
|
qedi_ep->pmtu = qedi->ll2_mtu;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"MTU cannot be %u, using default MTU %u\n",
|
|
path_data->pmtu, qedi_ep->pmtu);
|
|
}
|
|
|
|
if (path_data->pmtu != qedi->ll2_mtu) {
|
|
if (path_data->pmtu > JUMBO_MTU) {
|
|
ret = -EINVAL;
|
|
QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu);
|
|
goto set_path_exit;
|
|
}
|
|
|
|
qedi_reset_host_mtu(qedi, path_data->pmtu);
|
|
qedi_ep->pmtu = qedi->ll2_mtu;
|
|
}
|
|
|
|
port_id = qedi_ep->src_port;
|
|
if (port_id >= QEDI_LOCAL_PORT_MIN &&
|
|
port_id < QEDI_LOCAL_PORT_MAX) {
|
|
if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id))
|
|
port_id = 0;
|
|
} else {
|
|
port_id = 0;
|
|
}
|
|
|
|
if (!port_id) {
|
|
port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl);
|
|
if (port_id == QEDI_LOCAL_PORT_INVALID) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Failed to allocate port id for iscsi_cid=0x%x\n",
|
|
iscsi_cid);
|
|
ret = -ENOMEM;
|
|
goto set_path_exit;
|
|
}
|
|
}
|
|
|
|
qedi_ep->src_port = port_id;
|
|
|
|
if (qedi_ep->ip_type == TCP_IPV4) {
|
|
memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr,
|
|
sizeof(struct in_addr));
|
|
memcpy(&qedi->src_ip[0], &path_data->src.v4_addr,
|
|
sizeof(struct in_addr));
|
|
qedi->ip_type = TCP_IPV4;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n",
|
|
qedi_ep->src_addr, qedi_ep->src_port,
|
|
qedi_ep->dst_addr, qedi_ep->dst_port);
|
|
} else {
|
|
memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr,
|
|
sizeof(struct in6_addr));
|
|
memcpy(&qedi->src_ip[0], &path_data->src.v6_addr,
|
|
sizeof(struct in6_addr));
|
|
qedi->ip_type = TCP_IPV6;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n",
|
|
qedi_ep->src_addr, qedi_ep->src_port,
|
|
qedi_ep->dst_addr, qedi_ep->dst_port);
|
|
}
|
|
|
|
queue_work(qedi->offload_thread, &qedi_ep->offload_work);
|
|
|
|
ret = 0;
|
|
|
|
set_path_exit:
|
|
return ret;
|
|
}
|
|
|
|
static umode_t qedi_attr_is_visible(int param_type, int param)
|
|
{
|
|
switch (param_type) {
|
|
case ISCSI_HOST_PARAM:
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_NETDEV_NAME:
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
case ISCSI_HOST_PARAM_IPADDRESS:
|
|
return 0444;
|
|
default:
|
|
return 0;
|
|
}
|
|
case ISCSI_PARAM:
|
|
switch (param) {
|
|
case ISCSI_PARAM_MAX_RECV_DLENGTH:
|
|
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
|
|
case ISCSI_PARAM_HDRDGST_EN:
|
|
case ISCSI_PARAM_DATADGST_EN:
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
case ISCSI_PARAM_EXP_STATSN:
|
|
case ISCSI_PARAM_PERSISTENT_ADDRESS:
|
|
case ISCSI_PARAM_PERSISTENT_PORT:
|
|
case ISCSI_PARAM_PING_TMO:
|
|
case ISCSI_PARAM_RECV_TMO:
|
|
case ISCSI_PARAM_INITIAL_R2T_EN:
|
|
case ISCSI_PARAM_MAX_R2T:
|
|
case ISCSI_PARAM_IMM_DATA_EN:
|
|
case ISCSI_PARAM_FIRST_BURST:
|
|
case ISCSI_PARAM_MAX_BURST:
|
|
case ISCSI_PARAM_PDU_INORDER_EN:
|
|
case ISCSI_PARAM_DATASEQ_INORDER_EN:
|
|
case ISCSI_PARAM_ERL:
|
|
case ISCSI_PARAM_TARGET_NAME:
|
|
case ISCSI_PARAM_TPGT:
|
|
case ISCSI_PARAM_USERNAME:
|
|
case ISCSI_PARAM_PASSWORD:
|
|
case ISCSI_PARAM_USERNAME_IN:
|
|
case ISCSI_PARAM_PASSWORD_IN:
|
|
case ISCSI_PARAM_FAST_ABORT:
|
|
case ISCSI_PARAM_ABORT_TMO:
|
|
case ISCSI_PARAM_LU_RESET_TMO:
|
|
case ISCSI_PARAM_TGT_RESET_TMO:
|
|
case ISCSI_PARAM_IFACE_NAME:
|
|
case ISCSI_PARAM_INITIATOR_NAME:
|
|
case ISCSI_PARAM_BOOT_ROOT:
|
|
case ISCSI_PARAM_BOOT_NIC:
|
|
case ISCSI_PARAM_BOOT_TARGET:
|
|
return 0444;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qedi_cleanup_task(struct iscsi_task *task)
|
|
{
|
|
struct qedi_cmd *cmd;
|
|
|
|
if (task->state == ISCSI_TASK_PENDING) {
|
|
QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n",
|
|
refcount_read(&task->refcount));
|
|
return;
|
|
}
|
|
|
|
if (task->sc)
|
|
qedi_iscsi_unmap_sg_list(task->dd_data);
|
|
|
|
cmd = task->dd_data;
|
|
if (cmd->task_id != U16_MAX)
|
|
qedi_clear_task_idx(iscsi_host_priv(task->conn->session->host),
|
|
cmd->task_id);
|
|
|
|
cmd->task_id = U16_MAX;
|
|
cmd->scsi_cmd = NULL;
|
|
}
|
|
|
|
struct iscsi_transport qedi_iscsi_transport = {
|
|
.owner = THIS_MODULE,
|
|
.name = QEDI_MODULE_NAME,
|
|
.caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST |
|
|
CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO,
|
|
.create_session = qedi_session_create,
|
|
.destroy_session = qedi_session_destroy,
|
|
.create_conn = qedi_conn_create,
|
|
.bind_conn = qedi_conn_bind,
|
|
.unbind_conn = iscsi_conn_unbind,
|
|
.start_conn = qedi_conn_start,
|
|
.stop_conn = iscsi_conn_stop,
|
|
.destroy_conn = qedi_conn_destroy,
|
|
.set_param = iscsi_set_param,
|
|
.get_ep_param = qedi_ep_get_param,
|
|
.get_conn_param = iscsi_conn_get_param,
|
|
.get_session_param = iscsi_session_get_param,
|
|
.get_host_param = qedi_host_get_param,
|
|
.send_pdu = iscsi_conn_send_pdu,
|
|
.get_stats = qedi_conn_get_stats,
|
|
.xmit_task = qedi_task_xmit,
|
|
.cleanup_task = qedi_cleanup_task,
|
|
.session_recovery_timedout = iscsi_session_recovery_timedout,
|
|
.ep_connect = qedi_ep_connect,
|
|
.ep_poll = qedi_ep_poll,
|
|
.ep_disconnect = qedi_ep_disconnect,
|
|
.set_path = qedi_set_path,
|
|
.attr_is_visible = qedi_attr_is_visible,
|
|
};
|
|
|
|
void qedi_start_conn_recovery(struct qedi_ctx *qedi,
|
|
struct qedi_conn *qedi_conn)
|
|
{
|
|
struct iscsi_cls_session *cls_sess;
|
|
struct iscsi_cls_conn *cls_conn;
|
|
struct iscsi_conn *conn;
|
|
|
|
cls_conn = qedi_conn->cls_conn;
|
|
conn = cls_conn->dd_data;
|
|
cls_sess = iscsi_conn_to_session(cls_conn);
|
|
|
|
if (iscsi_is_session_online(cls_sess)) {
|
|
qedi_conn->abrt_conn = 1;
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Failing connection, state=0x%x, cid=0x%x\n",
|
|
conn->session->state, qedi_conn->iscsi_conn_id);
|
|
iscsi_conn_failure(qedi_conn->cls_conn->dd_data,
|
|
ISCSI_ERR_CONN_FAILED);
|
|
}
|
|
}
|
|
|
|
static const struct {
|
|
enum iscsi_error_types error_code;
|
|
char *err_string;
|
|
} qedi_iscsi_error[] = {
|
|
{ ISCSI_STATUS_NONE,
|
|
"tcp_error none"
|
|
},
|
|
{ ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
|
|
"task cid mismatch"
|
|
},
|
|
{ ISCSI_CONN_ERROR_TASK_NOT_VALID,
|
|
"invalid task"
|
|
},
|
|
{ ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
|
|
"rq ring full"
|
|
},
|
|
{ ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
|
|
"cmdq ring full"
|
|
},
|
|
{ ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
|
|
"sge caching failed"
|
|
},
|
|
{ ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
|
|
"hdr digest error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
|
|
"local cmpl error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_DATA_OVERRUN,
|
|
"invalid task"
|
|
},
|
|
{ ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
|
|
"out of sge error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
|
|
"tcp ip fragment error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
|
|
"AHS len protocol error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
|
|
"itt out of range error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
|
|
"data seg more than pdu size"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
|
|
"invalid opcode"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
|
|
"invalid opcode before update"
|
|
},
|
|
{ ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
|
|
"unexpected opcode"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
|
|
"r2t carries no data"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
|
|
"data sn error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
|
|
"data TTT error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
|
|
"r2t TTT error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
|
|
"buffer offset error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
|
|
"buffer offset ooo"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
|
|
"data seg len 0"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
|
|
"data xer len error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
|
|
"data xer len1 error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
|
|
"data xer len2 error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
|
|
"protocol lun error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
|
|
"f bit zero error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
|
|
"exp stat sn error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
|
|
"dsl not zero error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
|
|
"invalid dsl"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
|
|
"data seg len too big"
|
|
},
|
|
{ ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
|
|
"outstanding r2t count error"
|
|
},
|
|
{ ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
|
|
"sense datalen error"
|
|
},
|
|
};
|
|
|
|
static char *qedi_get_iscsi_error(enum iscsi_error_types err_code)
|
|
{
|
|
int i;
|
|
char *msg = NULL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) {
|
|
if (qedi_iscsi_error[i].error_code == err_code) {
|
|
msg = qedi_iscsi_error[i].err_string;
|
|
break;
|
|
}
|
|
}
|
|
return msg;
|
|
}
|
|
|
|
void qedi_process_iscsi_error(struct qedi_endpoint *ep,
|
|
struct iscsi_eqe_data *data)
|
|
{
|
|
struct qedi_conn *qedi_conn;
|
|
struct qedi_ctx *qedi;
|
|
char warn_notice[] = "iscsi_warning";
|
|
char error_notice[] = "iscsi_error";
|
|
char unknown_msg[] = "Unknown error";
|
|
char *message;
|
|
int need_recovery = 0;
|
|
u32 err_mask = 0;
|
|
char *msg;
|
|
|
|
if (!ep)
|
|
return;
|
|
|
|
qedi_conn = ep->conn;
|
|
if (!qedi_conn)
|
|
return;
|
|
|
|
qedi = ep->qedi;
|
|
|
|
QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n",
|
|
data->error_code);
|
|
|
|
if (err_mask) {
|
|
need_recovery = 0;
|
|
message = warn_notice;
|
|
} else {
|
|
need_recovery = 1;
|
|
message = error_notice;
|
|
}
|
|
|
|
msg = qedi_get_iscsi_error(data->error_code);
|
|
if (!msg) {
|
|
need_recovery = 0;
|
|
msg = unknown_msg;
|
|
}
|
|
|
|
iscsi_conn_printk(KERN_ALERT,
|
|
qedi_conn->cls_conn->dd_data,
|
|
"qedi: %s - %s\n", message, msg);
|
|
|
|
if (need_recovery)
|
|
qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
|
|
}
|
|
|
|
void qedi_process_tcp_error(struct qedi_endpoint *ep,
|
|
struct iscsi_eqe_data *data)
|
|
{
|
|
struct qedi_conn *qedi_conn;
|
|
|
|
if (!ep)
|
|
return;
|
|
|
|
qedi_conn = ep->conn;
|
|
if (!qedi_conn)
|
|
return;
|
|
|
|
QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n",
|
|
data->error_code);
|
|
|
|
qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
|
|
}
|