1ace7f46bSManish Rangankar /* 2ace7f46bSManish Rangankar * QLogic iSCSI Offload Driver 3ace7f46bSManish Rangankar * Copyright (c) 2016 Cavium Inc. 4ace7f46bSManish Rangankar * 5ace7f46bSManish Rangankar * This software is available under the terms of the GNU General Public License 6ace7f46bSManish Rangankar * (GPL) Version 2, available from the file COPYING in the main directory of 7ace7f46bSManish Rangankar * this source tree. 8ace7f46bSManish Rangankar */ 9ace7f46bSManish Rangankar 10ace7f46bSManish Rangankar #include <linux/blkdev.h> 11ace7f46bSManish Rangankar #include <linux/etherdevice.h> 12ace7f46bSManish Rangankar #include <linux/if_ether.h> 13ace7f46bSManish Rangankar #include <linux/if_vlan.h> 14ace7f46bSManish Rangankar #include <scsi/scsi_tcq.h> 15ace7f46bSManish Rangankar 16ace7f46bSManish Rangankar #include "qedi.h" 17ace7f46bSManish Rangankar #include "qedi_iscsi.h" 18ace7f46bSManish Rangankar #include "qedi_gbl.h" 19ace7f46bSManish Rangankar 20ace7f46bSManish Rangankar int qedi_recover_all_conns(struct qedi_ctx *qedi) 21ace7f46bSManish Rangankar { 22ace7f46bSManish Rangankar struct qedi_conn *qedi_conn; 23ace7f46bSManish Rangankar int i; 24ace7f46bSManish Rangankar 25ace7f46bSManish Rangankar for (i = 0; i < qedi->max_active_conns; i++) { 26ace7f46bSManish Rangankar qedi_conn = qedi_get_conn_from_id(qedi, i); 27ace7f46bSManish Rangankar if (!qedi_conn) 28ace7f46bSManish Rangankar continue; 29ace7f46bSManish Rangankar 30ace7f46bSManish Rangankar qedi_start_conn_recovery(qedi, qedi_conn); 31ace7f46bSManish Rangankar } 32ace7f46bSManish Rangankar 33ace7f46bSManish Rangankar return SUCCESS; 34ace7f46bSManish Rangankar } 35ace7f46bSManish Rangankar 36ace7f46bSManish Rangankar static int qedi_eh_host_reset(struct scsi_cmnd *cmd) 37ace7f46bSManish Rangankar { 38ace7f46bSManish Rangankar struct Scsi_Host *shost = cmd->device->host; 39ace7f46bSManish Rangankar struct qedi_ctx *qedi; 40ace7f46bSManish Rangankar 41ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 42ace7f46bSManish Rangankar 43ace7f46bSManish Rangankar return qedi_recover_all_conns(qedi); 44ace7f46bSManish Rangankar } 45ace7f46bSManish Rangankar 46ace7f46bSManish Rangankar struct scsi_host_template qedi_host_template = { 47ace7f46bSManish Rangankar .module = THIS_MODULE, 48ace7f46bSManish Rangankar .name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver", 49ace7f46bSManish Rangankar .proc_name = QEDI_MODULE_NAME, 50ace7f46bSManish Rangankar .queuecommand = iscsi_queuecommand, 51b6a05c82SChristoph Hellwig .eh_timed_out = iscsi_eh_cmd_timed_out, 52ace7f46bSManish Rangankar .eh_abort_handler = iscsi_eh_abort, 53ace7f46bSManish Rangankar .eh_device_reset_handler = iscsi_eh_device_reset, 54ace7f46bSManish Rangankar .eh_target_reset_handler = iscsi_eh_recover_target, 55ace7f46bSManish Rangankar .eh_host_reset_handler = qedi_eh_host_reset, 56ace7f46bSManish Rangankar .target_alloc = iscsi_target_alloc, 57ace7f46bSManish Rangankar .change_queue_depth = scsi_change_queue_depth, 58ace7f46bSManish Rangankar .can_queue = QEDI_MAX_ISCSI_TASK, 59ace7f46bSManish Rangankar .this_id = -1, 60ace7f46bSManish Rangankar .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD, 61ace7f46bSManish Rangankar .max_sectors = 0xffff, 62d0788a52Smanish.rangankar@cavium.com .dma_boundary = QEDI_HW_DMA_BOUNDARY, 63ace7f46bSManish Rangankar .cmd_per_lun = 128, 64ace7f46bSManish Rangankar .use_clustering = ENABLE_CLUSTERING, 65ace7f46bSManish Rangankar .shost_attrs = qedi_shost_attrs, 66ace7f46bSManish Rangankar }; 67ace7f46bSManish Rangankar 68ace7f46bSManish Rangankar static void qedi_conn_free_login_resources(struct qedi_ctx *qedi, 69ace7f46bSManish Rangankar struct qedi_conn *qedi_conn) 70ace7f46bSManish Rangankar { 71ace7f46bSManish Rangankar if (qedi_conn->gen_pdu.resp_bd_tbl) { 72ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 73ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_bd_tbl, 74ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_bd_dma); 75ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_bd_tbl = NULL; 76ace7f46bSManish Rangankar } 77ace7f46bSManish Rangankar 78ace7f46bSManish Rangankar if (qedi_conn->gen_pdu.req_bd_tbl) { 79ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 80ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_tbl, 81ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_dma); 82ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_tbl = NULL; 83ace7f46bSManish Rangankar } 84ace7f46bSManish Rangankar 85ace7f46bSManish Rangankar if (qedi_conn->gen_pdu.resp_buf) { 86ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, 87ace7f46bSManish Rangankar ISCSI_DEF_MAX_RECV_SEG_LEN, 88ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf, 89ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_dma_addr); 90ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf = NULL; 91ace7f46bSManish Rangankar } 92ace7f46bSManish Rangankar 93ace7f46bSManish Rangankar if (qedi_conn->gen_pdu.req_buf) { 94ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, 95ace7f46bSManish Rangankar ISCSI_DEF_MAX_RECV_SEG_LEN, 96ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf, 97ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_dma_addr); 98ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf = NULL; 99ace7f46bSManish Rangankar } 100ace7f46bSManish Rangankar } 101ace7f46bSManish Rangankar 102ace7f46bSManish Rangankar static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi, 103ace7f46bSManish Rangankar struct qedi_conn *qedi_conn) 104ace7f46bSManish Rangankar { 105ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf = 106ace7f46bSManish Rangankar dma_alloc_coherent(&qedi->pdev->dev, 107ace7f46bSManish Rangankar ISCSI_DEF_MAX_RECV_SEG_LEN, 108ace7f46bSManish Rangankar &qedi_conn->gen_pdu.req_dma_addr, 109ace7f46bSManish Rangankar GFP_KERNEL); 110ace7f46bSManish Rangankar if (!qedi_conn->gen_pdu.req_buf) 111ace7f46bSManish Rangankar goto login_req_buf_failure; 112ace7f46bSManish Rangankar 113ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf_size = 0; 114ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf; 115ace7f46bSManish Rangankar 116ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf = 117ace7f46bSManish Rangankar dma_alloc_coherent(&qedi->pdev->dev, 118ace7f46bSManish Rangankar ISCSI_DEF_MAX_RECV_SEG_LEN, 119ace7f46bSManish Rangankar &qedi_conn->gen_pdu.resp_dma_addr, 120ace7f46bSManish Rangankar GFP_KERNEL); 121ace7f46bSManish Rangankar if (!qedi_conn->gen_pdu.resp_buf) 122ace7f46bSManish Rangankar goto login_resp_buf_failure; 123ace7f46bSManish Rangankar 124ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN; 125ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf; 126ace7f46bSManish Rangankar 127ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_tbl = 128ace7f46bSManish Rangankar dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 129ace7f46bSManish Rangankar &qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL); 130ace7f46bSManish Rangankar if (!qedi_conn->gen_pdu.req_bd_tbl) 131ace7f46bSManish Rangankar goto login_req_bd_tbl_failure; 132ace7f46bSManish Rangankar 133ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_bd_tbl = 134ace7f46bSManish Rangankar dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 135ace7f46bSManish Rangankar &qedi_conn->gen_pdu.resp_bd_dma, 136ace7f46bSManish Rangankar GFP_KERNEL); 137ace7f46bSManish Rangankar if (!qedi_conn->gen_pdu.resp_bd_tbl) 138ace7f46bSManish Rangankar goto login_resp_bd_tbl_failure; 139ace7f46bSManish Rangankar 140ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS, 141ace7f46bSManish Rangankar "Allocation successful, cid=0x%x\n", 142ace7f46bSManish Rangankar qedi_conn->iscsi_conn_id); 143ace7f46bSManish Rangankar return 0; 144ace7f46bSManish Rangankar 145ace7f46bSManish Rangankar login_resp_bd_tbl_failure: 146ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 147ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_tbl, 148ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_dma); 149ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_bd_tbl = NULL; 150ace7f46bSManish Rangankar 151ace7f46bSManish Rangankar login_req_bd_tbl_failure: 152ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, 153ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf, 154ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_dma_addr); 155ace7f46bSManish Rangankar qedi_conn->gen_pdu.resp_buf = NULL; 156ace7f46bSManish Rangankar login_resp_buf_failure: 157ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, 158ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf, 159ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_dma_addr); 160ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf = NULL; 161ace7f46bSManish Rangankar login_req_buf_failure: 162ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data, 163ace7f46bSManish Rangankar "login resource alloc failed!!\n"); 164ace7f46bSManish Rangankar return -ENOMEM; 165ace7f46bSManish Rangankar } 166ace7f46bSManish Rangankar 167ace7f46bSManish Rangankar static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi, 168ace7f46bSManish Rangankar struct iscsi_session *session) 169ace7f46bSManish Rangankar { 170ace7f46bSManish Rangankar int i; 171ace7f46bSManish Rangankar 172ace7f46bSManish Rangankar for (i = 0; i < session->cmds_max; i++) { 173ace7f46bSManish Rangankar struct iscsi_task *task = session->cmds[i]; 174ace7f46bSManish Rangankar struct qedi_cmd *cmd = task->dd_data; 175ace7f46bSManish Rangankar 176ace7f46bSManish Rangankar if (cmd->io_tbl.sge_tbl) 177ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, 178ace7f46bSManish Rangankar QEDI_ISCSI_MAX_BDS_PER_CMD * 179be086e7cSMintz, Yuval sizeof(struct scsi_sge), 180ace7f46bSManish Rangankar cmd->io_tbl.sge_tbl, 181ace7f46bSManish Rangankar cmd->io_tbl.sge_tbl_dma); 182ace7f46bSManish Rangankar 183ace7f46bSManish Rangankar if (cmd->sense_buffer) 184ace7f46bSManish Rangankar dma_free_coherent(&qedi->pdev->dev, 185ace7f46bSManish Rangankar SCSI_SENSE_BUFFERSIZE, 186ace7f46bSManish Rangankar cmd->sense_buffer, 187ace7f46bSManish Rangankar cmd->sense_buffer_dma); 188ace7f46bSManish Rangankar } 189ace7f46bSManish Rangankar } 190ace7f46bSManish Rangankar 191ace7f46bSManish Rangankar static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session, 192ace7f46bSManish Rangankar struct qedi_cmd *cmd) 193ace7f46bSManish Rangankar { 194ace7f46bSManish Rangankar struct qedi_io_bdt *io = &cmd->io_tbl; 195be086e7cSMintz, Yuval struct scsi_sge *sge; 196ace7f46bSManish Rangankar 197ace7f46bSManish Rangankar io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev, 198ace7f46bSManish Rangankar QEDI_ISCSI_MAX_BDS_PER_CMD * 199ace7f46bSManish Rangankar sizeof(*sge), 200ace7f46bSManish Rangankar &io->sge_tbl_dma, GFP_KERNEL); 201ace7f46bSManish Rangankar if (!io->sge_tbl) { 202ace7f46bSManish Rangankar iscsi_session_printk(KERN_ERR, session, 203ace7f46bSManish Rangankar "Could not allocate BD table.\n"); 204ace7f46bSManish Rangankar return -ENOMEM; 205ace7f46bSManish Rangankar } 206ace7f46bSManish Rangankar 207ace7f46bSManish Rangankar io->sge_valid = 0; 208ace7f46bSManish Rangankar return 0; 209ace7f46bSManish Rangankar } 210ace7f46bSManish Rangankar 211ace7f46bSManish Rangankar static int qedi_setup_cmd_pool(struct qedi_ctx *qedi, 212ace7f46bSManish Rangankar struct iscsi_session *session) 213ace7f46bSManish Rangankar { 214ace7f46bSManish Rangankar int i; 215ace7f46bSManish Rangankar 216ace7f46bSManish Rangankar for (i = 0; i < session->cmds_max; i++) { 217ace7f46bSManish Rangankar struct iscsi_task *task = session->cmds[i]; 218ace7f46bSManish Rangankar struct qedi_cmd *cmd = task->dd_data; 219ace7f46bSManish Rangankar 220ace7f46bSManish Rangankar task->hdr = &cmd->hdr; 221ace7f46bSManish Rangankar task->hdr_max = sizeof(struct iscsi_hdr); 222ace7f46bSManish Rangankar 223ace7f46bSManish Rangankar if (qedi_alloc_sget(qedi, session, cmd)) 224ace7f46bSManish Rangankar goto free_sgets; 225ace7f46bSManish Rangankar 226ace7f46bSManish Rangankar cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev, 227ace7f46bSManish Rangankar SCSI_SENSE_BUFFERSIZE, 228ace7f46bSManish Rangankar &cmd->sense_buffer_dma, 229ace7f46bSManish Rangankar GFP_KERNEL); 230ace7f46bSManish Rangankar if (!cmd->sense_buffer) 231ace7f46bSManish Rangankar goto free_sgets; 232ace7f46bSManish Rangankar } 233ace7f46bSManish Rangankar 234ace7f46bSManish Rangankar return 0; 235ace7f46bSManish Rangankar 236ace7f46bSManish Rangankar free_sgets: 237ace7f46bSManish Rangankar qedi_destroy_cmd_pool(qedi, session); 238ace7f46bSManish Rangankar return -ENOMEM; 239ace7f46bSManish Rangankar } 240ace7f46bSManish Rangankar 241ace7f46bSManish Rangankar static struct iscsi_cls_session * 242ace7f46bSManish Rangankar qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, 243ace7f46bSManish Rangankar u16 qdepth, uint32_t initial_cmdsn) 244ace7f46bSManish Rangankar { 245ace7f46bSManish Rangankar struct Scsi_Host *shost; 246ace7f46bSManish Rangankar struct iscsi_cls_session *cls_session; 247ace7f46bSManish Rangankar struct qedi_ctx *qedi; 248ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 249ace7f46bSManish Rangankar 250ace7f46bSManish Rangankar if (!ep) 251ace7f46bSManish Rangankar return NULL; 252ace7f46bSManish Rangankar 253ace7f46bSManish Rangankar qedi_ep = ep->dd_data; 254ace7f46bSManish Rangankar shost = qedi_ep->qedi->shost; 255ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 256ace7f46bSManish Rangankar 257ace7f46bSManish Rangankar if (cmds_max > qedi->max_sqes) 258ace7f46bSManish Rangankar cmds_max = qedi->max_sqes; 259ace7f46bSManish Rangankar else if (cmds_max < QEDI_SQ_WQES_MIN) 260ace7f46bSManish Rangankar cmds_max = QEDI_SQ_WQES_MIN; 261ace7f46bSManish Rangankar 262ace7f46bSManish Rangankar cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost, 263ace7f46bSManish Rangankar cmds_max, 0, sizeof(struct qedi_cmd), 264ace7f46bSManish Rangankar initial_cmdsn, ISCSI_MAX_TARGET); 265ace7f46bSManish Rangankar if (!cls_session) { 266ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 267ace7f46bSManish Rangankar "Failed to setup session for ep=%p\n", qedi_ep); 268ace7f46bSManish Rangankar return NULL; 269ace7f46bSManish Rangankar } 270ace7f46bSManish Rangankar 271ace7f46bSManish Rangankar if (qedi_setup_cmd_pool(qedi, cls_session->dd_data)) { 272ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 273ace7f46bSManish Rangankar "Failed to setup cmd pool for ep=%p\n", qedi_ep); 274ace7f46bSManish Rangankar goto session_teardown; 275ace7f46bSManish Rangankar } 276ace7f46bSManish Rangankar 277ace7f46bSManish Rangankar return cls_session; 278ace7f46bSManish Rangankar 279ace7f46bSManish Rangankar session_teardown: 280ace7f46bSManish Rangankar iscsi_session_teardown(cls_session); 281ace7f46bSManish Rangankar return NULL; 282ace7f46bSManish Rangankar } 283ace7f46bSManish Rangankar 284ace7f46bSManish Rangankar static void qedi_session_destroy(struct iscsi_cls_session *cls_session) 285ace7f46bSManish Rangankar { 286ace7f46bSManish Rangankar struct iscsi_session *session = cls_session->dd_data; 287ace7f46bSManish Rangankar struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 288ace7f46bSManish Rangankar struct qedi_ctx *qedi = iscsi_host_priv(shost); 289ace7f46bSManish Rangankar 290ace7f46bSManish Rangankar qedi_destroy_cmd_pool(qedi, session); 291ace7f46bSManish Rangankar iscsi_session_teardown(cls_session); 292ace7f46bSManish Rangankar } 293ace7f46bSManish Rangankar 294ace7f46bSManish Rangankar static struct iscsi_cls_conn * 295ace7f46bSManish Rangankar qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid) 296ace7f46bSManish Rangankar { 297ace7f46bSManish Rangankar struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 298ace7f46bSManish Rangankar struct qedi_ctx *qedi = iscsi_host_priv(shost); 299ace7f46bSManish Rangankar struct iscsi_cls_conn *cls_conn; 300ace7f46bSManish Rangankar struct qedi_conn *qedi_conn; 301ace7f46bSManish Rangankar struct iscsi_conn *conn; 302ace7f46bSManish Rangankar 303ace7f46bSManish Rangankar cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn), 304ace7f46bSManish Rangankar cid); 305ace7f46bSManish Rangankar if (!cls_conn) { 306ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 307ace7f46bSManish Rangankar "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n", 308ace7f46bSManish Rangankar cid, cls_session); 309ace7f46bSManish Rangankar return NULL; 310ace7f46bSManish Rangankar } 311ace7f46bSManish Rangankar 312ace7f46bSManish Rangankar conn = cls_conn->dd_data; 313ace7f46bSManish Rangankar qedi_conn = conn->dd_data; 314ace7f46bSManish Rangankar qedi_conn->cls_conn = cls_conn; 315ace7f46bSManish Rangankar qedi_conn->qedi = qedi; 316ace7f46bSManish Rangankar qedi_conn->ep = NULL; 317ace7f46bSManish Rangankar qedi_conn->active_cmd_count = 0; 318ace7f46bSManish Rangankar INIT_LIST_HEAD(&qedi_conn->active_cmd_list); 319ace7f46bSManish Rangankar spin_lock_init(&qedi_conn->list_lock); 320ace7f46bSManish Rangankar 321ace7f46bSManish Rangankar if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) { 322ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, conn, 323ace7f46bSManish Rangankar "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n", 324ace7f46bSManish Rangankar cid, cls_session); 325ace7f46bSManish Rangankar goto free_conn; 326ace7f46bSManish Rangankar } 327ace7f46bSManish Rangankar 328ace7f46bSManish Rangankar return cls_conn; 329ace7f46bSManish Rangankar 330ace7f46bSManish Rangankar free_conn: 331ace7f46bSManish Rangankar iscsi_conn_teardown(cls_conn); 332ace7f46bSManish Rangankar return NULL; 333ace7f46bSManish Rangankar } 334ace7f46bSManish Rangankar 335ace7f46bSManish Rangankar void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) 336ace7f46bSManish Rangankar { 337ace7f46bSManish Rangankar iscsi_block_session(cls_session); 338ace7f46bSManish Rangankar } 339ace7f46bSManish Rangankar 340ace7f46bSManish Rangankar void qedi_mark_device_available(struct iscsi_cls_session *cls_session) 341ace7f46bSManish Rangankar { 342ace7f46bSManish Rangankar iscsi_unblock_session(cls_session); 343ace7f46bSManish Rangankar } 344ace7f46bSManish Rangankar 345ace7f46bSManish Rangankar static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, 346ace7f46bSManish Rangankar struct qedi_conn *qedi_conn) 347ace7f46bSManish Rangankar { 348ace7f46bSManish Rangankar u32 iscsi_cid = qedi_conn->iscsi_conn_id; 349ace7f46bSManish Rangankar 350ace7f46bSManish Rangankar if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) { 351ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, 352ace7f46bSManish Rangankar "conn bind - entry #%d not free\n", 353ace7f46bSManish Rangankar iscsi_cid); 354ace7f46bSManish Rangankar return -EBUSY; 355ace7f46bSManish Rangankar } 356ace7f46bSManish Rangankar 357ace7f46bSManish Rangankar qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn; 358ace7f46bSManish Rangankar return 0; 359ace7f46bSManish Rangankar } 360ace7f46bSManish Rangankar 361ace7f46bSManish Rangankar struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid) 362ace7f46bSManish Rangankar { 363ace7f46bSManish Rangankar if (!qedi->cid_que.conn_cid_tbl) { 364ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n"); 365ace7f46bSManish Rangankar return NULL; 366ace7f46bSManish Rangankar 367ace7f46bSManish Rangankar } else if (iscsi_cid >= qedi->max_active_conns) { 368ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid); 369ace7f46bSManish Rangankar return NULL; 370ace7f46bSManish Rangankar } 371ace7f46bSManish Rangankar return qedi->cid_que.conn_cid_tbl[iscsi_cid]; 372ace7f46bSManish Rangankar } 373ace7f46bSManish Rangankar 374ace7f46bSManish Rangankar static int qedi_conn_bind(struct iscsi_cls_session *cls_session, 375ace7f46bSManish Rangankar struct iscsi_cls_conn *cls_conn, 376ace7f46bSManish Rangankar u64 transport_fd, int is_leading) 377ace7f46bSManish Rangankar { 378ace7f46bSManish Rangankar struct iscsi_conn *conn = cls_conn->dd_data; 379ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = conn->dd_data; 380ace7f46bSManish Rangankar struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 381ace7f46bSManish Rangankar struct qedi_ctx *qedi = iscsi_host_priv(shost); 382ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 383ace7f46bSManish Rangankar struct iscsi_endpoint *ep; 384ace7f46bSManish Rangankar 385ace7f46bSManish Rangankar ep = iscsi_lookup_endpoint(transport_fd); 386ace7f46bSManish Rangankar if (!ep) 387ace7f46bSManish Rangankar return -EINVAL; 388ace7f46bSManish Rangankar 389ace7f46bSManish Rangankar qedi_ep = ep->dd_data; 390ace7f46bSManish Rangankar if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) || 391ace7f46bSManish Rangankar (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) 392ace7f46bSManish Rangankar return -EINVAL; 393ace7f46bSManish Rangankar 394ace7f46bSManish Rangankar if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) 395ace7f46bSManish Rangankar return -EINVAL; 396ace7f46bSManish Rangankar 397ace7f46bSManish Rangankar qedi_ep->conn = qedi_conn; 398ace7f46bSManish Rangankar qedi_conn->ep = qedi_ep; 399ace7f46bSManish Rangankar qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid; 400ace7f46bSManish Rangankar qedi_conn->fw_cid = qedi_ep->fw_cid; 401ace7f46bSManish Rangankar qedi_conn->cmd_cleanup_req = 0; 402ace7f46bSManish Rangankar qedi_conn->cmd_cleanup_cmpl = 0; 403ace7f46bSManish Rangankar 404ace7f46bSManish Rangankar if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) 405ace7f46bSManish Rangankar return -EINVAL; 406ace7f46bSManish Rangankar 407ace7f46bSManish Rangankar spin_lock_init(&qedi_conn->tmf_work_lock); 408ace7f46bSManish Rangankar INIT_LIST_HEAD(&qedi_conn->tmf_work_list); 409ace7f46bSManish Rangankar init_waitqueue_head(&qedi_conn->wait_queue); 410ace7f46bSManish Rangankar return 0; 411ace7f46bSManish Rangankar } 412ace7f46bSManish Rangankar 413ace7f46bSManish Rangankar static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, 414ace7f46bSManish Rangankar struct qedi_conn *qedi_conn) 415ace7f46bSManish Rangankar { 416ace7f46bSManish Rangankar struct qed_iscsi_params_update *conn_info; 417ace7f46bSManish Rangankar struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn; 418ace7f46bSManish Rangankar struct iscsi_conn *conn = cls_conn->dd_data; 419ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 420ace7f46bSManish Rangankar int rval; 421ace7f46bSManish Rangankar 422ace7f46bSManish Rangankar qedi_ep = qedi_conn->ep; 423ace7f46bSManish Rangankar 424ace7f46bSManish Rangankar conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); 425ace7f46bSManish Rangankar if (!conn_info) { 426ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n"); 427ace7f46bSManish Rangankar return -ENOMEM; 428ace7f46bSManish Rangankar } 429ace7f46bSManish Rangankar 430ace7f46bSManish Rangankar conn_info->update_flag = 0; 431ace7f46bSManish Rangankar 432ace7f46bSManish Rangankar if (conn->hdrdgst_en) 433ace7f46bSManish Rangankar SET_FIELD(conn_info->update_flag, 434ace7f46bSManish Rangankar ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true); 435ace7f46bSManish Rangankar if (conn->datadgst_en) 436ace7f46bSManish Rangankar SET_FIELD(conn_info->update_flag, 437ace7f46bSManish Rangankar ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true); 438ace7f46bSManish Rangankar if (conn->session->initial_r2t_en) 439ace7f46bSManish Rangankar SET_FIELD(conn_info->update_flag, 440ace7f46bSManish Rangankar ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T, 441ace7f46bSManish Rangankar true); 442ace7f46bSManish Rangankar if (conn->session->imm_data_en) 443ace7f46bSManish Rangankar SET_FIELD(conn_info->update_flag, 444ace7f46bSManish Rangankar ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, 445ace7f46bSManish Rangankar true); 446ace7f46bSManish Rangankar 447ace7f46bSManish Rangankar conn_info->max_seq_size = conn->session->max_burst; 448ace7f46bSManish Rangankar conn_info->max_recv_pdu_length = conn->max_recv_dlength; 449ace7f46bSManish Rangankar conn_info->max_send_pdu_length = conn->max_xmit_dlength; 450ace7f46bSManish Rangankar conn_info->first_seq_length = conn->session->first_burst; 451ace7f46bSManish Rangankar conn_info->exp_stat_sn = conn->exp_statsn; 452ace7f46bSManish Rangankar 453ace7f46bSManish Rangankar rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle, 454ace7f46bSManish Rangankar conn_info); 455ace7f46bSManish Rangankar if (rval) { 456ace7f46bSManish Rangankar rval = -ENXIO; 457ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n"); 458ace7f46bSManish Rangankar } 459ace7f46bSManish Rangankar 460ace7f46bSManish Rangankar kfree(conn_info); 461ace7f46bSManish Rangankar return rval; 462ace7f46bSManish Rangankar } 463ace7f46bSManish Rangankar 464ace7f46bSManish Rangankar static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en) 465ace7f46bSManish Rangankar { 466ace7f46bSManish Rangankar u16 mss = 0; 467ace7f46bSManish Rangankar u16 hdrs = TCP_HDR_LEN; 468ace7f46bSManish Rangankar 469ace7f46bSManish Rangankar if (is_ipv6) 470ace7f46bSManish Rangankar hdrs += IPV6_HDR_LEN; 471ace7f46bSManish Rangankar else 472ace7f46bSManish Rangankar hdrs += IPV4_HDR_LEN; 473ace7f46bSManish Rangankar 474ace7f46bSManish Rangankar if (vlan_en) 475ace7f46bSManish Rangankar hdrs += VLAN_LEN; 476ace7f46bSManish Rangankar 477ace7f46bSManish Rangankar mss = pmtu - hdrs; 478ace7f46bSManish Rangankar 479ace7f46bSManish Rangankar if (tcp_ts_en) 480ace7f46bSManish Rangankar mss -= TCP_OPTION_LEN; 481ace7f46bSManish Rangankar 482ace7f46bSManish Rangankar if (!mss) 483ace7f46bSManish Rangankar mss = DEF_MSS; 484ace7f46bSManish Rangankar 485ace7f46bSManish Rangankar return mss; 486ace7f46bSManish Rangankar } 487ace7f46bSManish Rangankar 488ace7f46bSManish Rangankar static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep) 489ace7f46bSManish Rangankar { 490ace7f46bSManish Rangankar struct qedi_ctx *qedi = qedi_ep->qedi; 491ace7f46bSManish Rangankar struct qed_iscsi_params_offload *conn_info; 492ace7f46bSManish Rangankar int rval; 493ace7f46bSManish Rangankar int i; 494ace7f46bSManish Rangankar 495ace7f46bSManish Rangankar conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); 496ace7f46bSManish Rangankar if (!conn_info) { 497ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 498ace7f46bSManish Rangankar "Failed to allocate memory ep=%p\n", qedi_ep); 499ace7f46bSManish Rangankar return -ENOMEM; 500ace7f46bSManish Rangankar } 501ace7f46bSManish Rangankar 502ace7f46bSManish Rangankar ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac); 503ace7f46bSManish Rangankar ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac); 504ace7f46bSManish Rangankar 505ace7f46bSManish Rangankar conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]); 506ace7f46bSManish Rangankar conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]); 507ace7f46bSManish Rangankar 508ace7f46bSManish Rangankar if (qedi_ep->ip_type == TCP_IPV4) { 509ace7f46bSManish Rangankar conn_info->ip_version = 0; 510ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 511ace7f46bSManish Rangankar "After ntohl: src_addr=%pI4, dst_addr=%pI4\n", 512ace7f46bSManish Rangankar qedi_ep->src_addr, qedi_ep->dst_addr); 513ace7f46bSManish Rangankar } else { 514ace7f46bSManish Rangankar for (i = 1; i < 4; i++) { 515ace7f46bSManish Rangankar conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]); 516ace7f46bSManish Rangankar conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]); 517ace7f46bSManish Rangankar } 518ace7f46bSManish Rangankar 519ace7f46bSManish Rangankar conn_info->ip_version = 1; 520ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 521ace7f46bSManish Rangankar "After ntohl: src_addr=%pI6, dst_addr=%pI6\n", 522ace7f46bSManish Rangankar qedi_ep->src_addr, qedi_ep->dst_addr); 523ace7f46bSManish Rangankar } 524ace7f46bSManish Rangankar 525ace7f46bSManish Rangankar conn_info->src.port = qedi_ep->src_port; 526ace7f46bSManish Rangankar conn_info->dst.port = qedi_ep->dst_port; 527ace7f46bSManish Rangankar 528ace7f46bSManish Rangankar conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE; 529ace7f46bSManish Rangankar conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma; 530ace7f46bSManish Rangankar conn_info->vlan_id = qedi_ep->vlan_id; 531ace7f46bSManish Rangankar 532ace7f46bSManish Rangankar SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1); 533ace7f46bSManish Rangankar SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1); 534ace7f46bSManish Rangankar SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1); 535ace7f46bSManish Rangankar SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1); 536ace7f46bSManish Rangankar 537ace7f46bSManish Rangankar conn_info->default_cq = (qedi_ep->fw_cid % 8); 538ace7f46bSManish Rangankar 539ace7f46bSManish Rangankar conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT; 540ace7f46bSManish Rangankar conn_info->dup_ack_theshold = 3; 541ace7f46bSManish Rangankar conn_info->rcv_wnd = 65535; 542ace7f46bSManish Rangankar conn_info->cwnd = DEF_MAX_CWND; 543ace7f46bSManish Rangankar 544ace7f46bSManish Rangankar conn_info->ss_thresh = 65535; 545ace7f46bSManish Rangankar conn_info->srtt = 300; 546ace7f46bSManish Rangankar conn_info->rtt_var = 150; 547ace7f46bSManish Rangankar conn_info->flow_label = 0; 548ace7f46bSManish Rangankar conn_info->ka_timeout = DEF_KA_TIMEOUT; 549ace7f46bSManish Rangankar conn_info->ka_interval = DEF_KA_INTERVAL; 550ace7f46bSManish Rangankar conn_info->max_rt_time = DEF_MAX_RT_TIME; 551ace7f46bSManish Rangankar conn_info->ttl = DEF_TTL; 552ace7f46bSManish Rangankar conn_info->tos_or_tc = DEF_TOS; 553ace7f46bSManish Rangankar conn_info->remote_port = qedi_ep->dst_port; 554ace7f46bSManish Rangankar conn_info->local_port = qedi_ep->src_port; 555ace7f46bSManish Rangankar 556ace7f46bSManish Rangankar conn_info->mss = qedi_calc_mss(qedi_ep->pmtu, 557ace7f46bSManish Rangankar (qedi_ep->ip_type == TCP_IPV6), 558ace7f46bSManish Rangankar 1, (qedi_ep->vlan_id != 0)); 559ace7f46bSManish Rangankar 560ace7f46bSManish Rangankar conn_info->rcv_wnd_scale = 4; 561ace7f46bSManish Rangankar conn_info->ts_ticks_per_second = 1000; 562ace7f46bSManish Rangankar conn_info->da_timeout_value = 200; 563ace7f46bSManish Rangankar conn_info->ack_frequency = 2; 564ace7f46bSManish Rangankar 565ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 566ace7f46bSManish Rangankar "Default cq index [%d], mss [%d]\n", 567ace7f46bSManish Rangankar conn_info->default_cq, conn_info->mss); 568ace7f46bSManish Rangankar 569ace7f46bSManish Rangankar rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info); 570ace7f46bSManish Rangankar if (rval) 571ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n", 572ace7f46bSManish Rangankar rval, qedi_ep); 573ace7f46bSManish Rangankar 574ace7f46bSManish Rangankar kfree(conn_info); 575ace7f46bSManish Rangankar return rval; 576ace7f46bSManish Rangankar } 577ace7f46bSManish Rangankar 578ace7f46bSManish Rangankar static int qedi_conn_start(struct iscsi_cls_conn *cls_conn) 579ace7f46bSManish Rangankar { 580ace7f46bSManish Rangankar struct iscsi_conn *conn = cls_conn->dd_data; 581ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = conn->dd_data; 582ace7f46bSManish Rangankar struct qedi_ctx *qedi; 583ace7f46bSManish Rangankar int rval; 584ace7f46bSManish Rangankar 585ace7f46bSManish Rangankar qedi = qedi_conn->qedi; 586ace7f46bSManish Rangankar 587ace7f46bSManish Rangankar rval = qedi_iscsi_update_conn(qedi, qedi_conn); 588ace7f46bSManish Rangankar if (rval) { 589ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, conn, 590ace7f46bSManish Rangankar "conn_start: FW oflload conn failed.\n"); 591ace7f46bSManish Rangankar rval = -EINVAL; 592ace7f46bSManish Rangankar goto start_err; 593ace7f46bSManish Rangankar } 594ace7f46bSManish Rangankar 595ace7f46bSManish Rangankar clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 596ace7f46bSManish Rangankar qedi_conn->abrt_conn = 0; 597ace7f46bSManish Rangankar 598ace7f46bSManish Rangankar rval = iscsi_conn_start(cls_conn); 599ace7f46bSManish Rangankar if (rval) { 600ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, conn, 601ace7f46bSManish Rangankar "iscsi_conn_start: FW oflload conn failed!!\n"); 602ace7f46bSManish Rangankar } 603ace7f46bSManish Rangankar 604ace7f46bSManish Rangankar start_err: 605ace7f46bSManish Rangankar return rval; 606ace7f46bSManish Rangankar } 607ace7f46bSManish Rangankar 608ace7f46bSManish Rangankar static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn) 609ace7f46bSManish Rangankar { 610ace7f46bSManish Rangankar struct iscsi_conn *conn = cls_conn->dd_data; 611ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = conn->dd_data; 612ace7f46bSManish Rangankar struct Scsi_Host *shost; 613ace7f46bSManish Rangankar struct qedi_ctx *qedi; 614ace7f46bSManish Rangankar 615ace7f46bSManish Rangankar shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); 616ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 617ace7f46bSManish Rangankar 618ace7f46bSManish Rangankar qedi_conn_free_login_resources(qedi, qedi_conn); 619ace7f46bSManish Rangankar iscsi_conn_teardown(cls_conn); 620ace7f46bSManish Rangankar } 621ace7f46bSManish Rangankar 622ace7f46bSManish Rangankar static int qedi_ep_get_param(struct iscsi_endpoint *ep, 623ace7f46bSManish Rangankar enum iscsi_param param, char *buf) 624ace7f46bSManish Rangankar { 625ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep = ep->dd_data; 626ace7f46bSManish Rangankar int len; 627ace7f46bSManish Rangankar 628ace7f46bSManish Rangankar if (!qedi_ep) 629ace7f46bSManish Rangankar return -ENOTCONN; 630ace7f46bSManish Rangankar 631ace7f46bSManish Rangankar switch (param) { 632ace7f46bSManish Rangankar case ISCSI_PARAM_CONN_PORT: 633ace7f46bSManish Rangankar len = sprintf(buf, "%hu\n", qedi_ep->dst_port); 634ace7f46bSManish Rangankar break; 635ace7f46bSManish Rangankar case ISCSI_PARAM_CONN_ADDRESS: 636ace7f46bSManish Rangankar if (qedi_ep->ip_type == TCP_IPV4) 637ace7f46bSManish Rangankar len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr); 638ace7f46bSManish Rangankar else 639ace7f46bSManish Rangankar len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr); 640ace7f46bSManish Rangankar break; 641ace7f46bSManish Rangankar default: 642ace7f46bSManish Rangankar return -ENOTCONN; 643ace7f46bSManish Rangankar } 644ace7f46bSManish Rangankar 645ace7f46bSManish Rangankar return len; 646ace7f46bSManish Rangankar } 647ace7f46bSManish Rangankar 648ace7f46bSManish Rangankar static int qedi_host_get_param(struct Scsi_Host *shost, 649ace7f46bSManish Rangankar enum iscsi_host_param param, char *buf) 650ace7f46bSManish Rangankar { 651ace7f46bSManish Rangankar struct qedi_ctx *qedi; 652ace7f46bSManish Rangankar int len; 653ace7f46bSManish Rangankar 654ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 655ace7f46bSManish Rangankar 656ace7f46bSManish Rangankar switch (param) { 657ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_HWADDRESS: 658ace7f46bSManish Rangankar len = sysfs_format_mac(buf, qedi->mac, 6); 659ace7f46bSManish Rangankar break; 660ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_NETDEV_NAME: 661ace7f46bSManish Rangankar len = sprintf(buf, "host%d\n", shost->host_no); 662ace7f46bSManish Rangankar break; 663ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_IPADDRESS: 664ace7f46bSManish Rangankar if (qedi->ip_type == TCP_IPV4) 665ace7f46bSManish Rangankar len = sprintf(buf, "%pI4\n", qedi->src_ip); 666ace7f46bSManish Rangankar else 667ace7f46bSManish Rangankar len = sprintf(buf, "%pI6\n", qedi->src_ip); 668ace7f46bSManish Rangankar break; 669ace7f46bSManish Rangankar default: 670ace7f46bSManish Rangankar return iscsi_host_get_param(shost, param, buf); 671ace7f46bSManish Rangankar } 672ace7f46bSManish Rangankar 673ace7f46bSManish Rangankar return len; 674ace7f46bSManish Rangankar } 675ace7f46bSManish Rangankar 676ace7f46bSManish Rangankar static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn, 677ace7f46bSManish Rangankar struct iscsi_stats *stats) 678ace7f46bSManish Rangankar { 679ace7f46bSManish Rangankar struct iscsi_conn *conn = cls_conn->dd_data; 680ace7f46bSManish Rangankar struct qed_iscsi_stats iscsi_stats; 681ace7f46bSManish Rangankar struct Scsi_Host *shost; 682ace7f46bSManish Rangankar struct qedi_ctx *qedi; 683ace7f46bSManish Rangankar 684ace7f46bSManish Rangankar shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); 685ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 686ace7f46bSManish Rangankar qedi_ops->get_stats(qedi->cdev, &iscsi_stats); 687ace7f46bSManish Rangankar 688ace7f46bSManish Rangankar conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt; 689ace7f46bSManish Rangankar conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt; 690ace7f46bSManish Rangankar conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt; 691ace7f46bSManish Rangankar conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt; 692ace7f46bSManish Rangankar conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt; 693ace7f46bSManish Rangankar 694ace7f46bSManish Rangankar stats->txdata_octets = conn->txdata_octets; 695ace7f46bSManish Rangankar stats->rxdata_octets = conn->rxdata_octets; 696ace7f46bSManish Rangankar stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; 697ace7f46bSManish Rangankar stats->dataout_pdus = conn->dataout_pdus_cnt; 698ace7f46bSManish Rangankar stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; 699ace7f46bSManish Rangankar stats->datain_pdus = conn->datain_pdus_cnt; 700ace7f46bSManish Rangankar stats->r2t_pdus = conn->r2t_pdus_cnt; 701ace7f46bSManish Rangankar stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; 702ace7f46bSManish Rangankar stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; 703ace7f46bSManish Rangankar stats->digest_err = 0; 704ace7f46bSManish Rangankar stats->timeout_err = 0; 705ace7f46bSManish Rangankar strcpy(stats->custom[0].desc, "eh_abort_cnt"); 706ace7f46bSManish Rangankar stats->custom[0].value = conn->eh_abort_cnt; 707ace7f46bSManish Rangankar stats->custom_length = 1; 708ace7f46bSManish Rangankar } 709ace7f46bSManish Rangankar 710ace7f46bSManish Rangankar static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn) 711ace7f46bSManish Rangankar { 712be086e7cSMintz, Yuval struct scsi_sge *bd_tbl; 713ace7f46bSManish Rangankar 714be086e7cSMintz, Yuval bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 715ace7f46bSManish Rangankar 716ace7f46bSManish Rangankar bd_tbl->sge_addr.hi = 717ace7f46bSManish Rangankar (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 718ace7f46bSManish Rangankar bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr; 719ace7f46bSManish Rangankar bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr - 720ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf; 721be086e7cSMintz, Yuval bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 722ace7f46bSManish Rangankar bd_tbl->sge_addr.hi = 723ace7f46bSManish Rangankar (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 724ace7f46bSManish Rangankar bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr; 725ace7f46bSManish Rangankar bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN; 726ace7f46bSManish Rangankar } 727ace7f46bSManish Rangankar 728ace7f46bSManish Rangankar static int qedi_iscsi_send_generic_request(struct iscsi_task *task) 729ace7f46bSManish Rangankar { 730ace7f46bSManish Rangankar struct qedi_cmd *cmd = task->dd_data; 731ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = cmd->conn; 732ace7f46bSManish Rangankar char *buf; 733ace7f46bSManish Rangankar int data_len; 734ace7f46bSManish Rangankar int rc = 0; 735ace7f46bSManish Rangankar 736ace7f46bSManish Rangankar qedi_iscsi_prep_generic_pdu_bd(qedi_conn); 737ace7f46bSManish Rangankar switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { 738ace7f46bSManish Rangankar case ISCSI_OP_LOGIN: 739ace7f46bSManish Rangankar qedi_send_iscsi_login(qedi_conn, task); 740ace7f46bSManish Rangankar break; 741ace7f46bSManish Rangankar case ISCSI_OP_NOOP_OUT: 742ace7f46bSManish Rangankar data_len = qedi_conn->gen_pdu.req_buf_size; 743ace7f46bSManish Rangankar buf = qedi_conn->gen_pdu.req_buf; 744ace7f46bSManish Rangankar if (data_len) 745ace7f46bSManish Rangankar rc = qedi_send_iscsi_nopout(qedi_conn, task, 746ace7f46bSManish Rangankar buf, data_len, 1); 747ace7f46bSManish Rangankar else 748ace7f46bSManish Rangankar rc = qedi_send_iscsi_nopout(qedi_conn, task, 749ace7f46bSManish Rangankar NULL, 0, 1); 750ace7f46bSManish Rangankar break; 751ace7f46bSManish Rangankar case ISCSI_OP_LOGOUT: 752ace7f46bSManish Rangankar rc = qedi_send_iscsi_logout(qedi_conn, task); 753ace7f46bSManish Rangankar break; 754ace7f46bSManish Rangankar case ISCSI_OP_SCSI_TMFUNC: 755ace7f46bSManish Rangankar rc = qedi_iscsi_abort_work(qedi_conn, task); 756ace7f46bSManish Rangankar break; 757ace7f46bSManish Rangankar case ISCSI_OP_TEXT: 758ace7f46bSManish Rangankar rc = qedi_send_iscsi_text(qedi_conn, task); 759ace7f46bSManish Rangankar break; 760ace7f46bSManish Rangankar default: 761ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, 762ace7f46bSManish Rangankar "unsupported op 0x%x\n", task->hdr->opcode); 763ace7f46bSManish Rangankar } 764ace7f46bSManish Rangankar 765ace7f46bSManish Rangankar return rc; 766ace7f46bSManish Rangankar } 767ace7f46bSManish Rangankar 768ace7f46bSManish Rangankar static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) 769ace7f46bSManish Rangankar { 770ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = conn->dd_data; 771ace7f46bSManish Rangankar struct qedi_cmd *cmd = task->dd_data; 772ace7f46bSManish Rangankar 773ace7f46bSManish Rangankar memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN); 774ace7f46bSManish Rangankar 775ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf_size = task->data_count; 776ace7f46bSManish Rangankar 777ace7f46bSManish Rangankar if (task->data_count) { 778ace7f46bSManish Rangankar memcpy(qedi_conn->gen_pdu.req_buf, task->data, 779ace7f46bSManish Rangankar task->data_count); 780ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_wr_ptr = 781ace7f46bSManish Rangankar qedi_conn->gen_pdu.req_buf + task->data_count; 782ace7f46bSManish Rangankar } 783ace7f46bSManish Rangankar 784ace7f46bSManish Rangankar cmd->conn = conn->dd_data; 785ace7f46bSManish Rangankar cmd->scsi_cmd = NULL; 786ace7f46bSManish Rangankar return qedi_iscsi_send_generic_request(task); 787ace7f46bSManish Rangankar } 788ace7f46bSManish Rangankar 789ace7f46bSManish Rangankar static int qedi_task_xmit(struct iscsi_task *task) 790ace7f46bSManish Rangankar { 791ace7f46bSManish Rangankar struct iscsi_conn *conn = task->conn; 792ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = conn->dd_data; 793ace7f46bSManish Rangankar struct qedi_cmd *cmd = task->dd_data; 794ace7f46bSManish Rangankar struct scsi_cmnd *sc = task->sc; 795ace7f46bSManish Rangankar 796ace7f46bSManish Rangankar cmd->state = 0; 797ace7f46bSManish Rangankar cmd->task = NULL; 798ace7f46bSManish Rangankar cmd->use_slowpath = false; 799ace7f46bSManish Rangankar cmd->conn = qedi_conn; 800ace7f46bSManish Rangankar cmd->task = task; 801ace7f46bSManish Rangankar cmd->io_cmd_in_list = false; 802ace7f46bSManish Rangankar INIT_LIST_HEAD(&cmd->io_cmd); 803ace7f46bSManish Rangankar 804ace7f46bSManish Rangankar if (!sc) 805ace7f46bSManish Rangankar return qedi_mtask_xmit(conn, task); 806ace7f46bSManish Rangankar 807ace7f46bSManish Rangankar cmd->scsi_cmd = sc; 808ace7f46bSManish Rangankar return qedi_iscsi_send_ioreq(task); 809ace7f46bSManish Rangankar } 810ace7f46bSManish Rangankar 811ace7f46bSManish Rangankar static struct iscsi_endpoint * 812ace7f46bSManish Rangankar qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, 813ace7f46bSManish Rangankar int non_blocking) 814ace7f46bSManish Rangankar { 815ace7f46bSManish Rangankar struct qedi_ctx *qedi; 816ace7f46bSManish Rangankar struct iscsi_endpoint *ep; 817ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 818ace7f46bSManish Rangankar struct sockaddr_in *addr; 819ace7f46bSManish Rangankar struct sockaddr_in6 *addr6; 820ace7f46bSManish Rangankar struct qed_dev *cdev = NULL; 821ace7f46bSManish Rangankar struct qedi_uio_dev *udev = NULL; 822ace7f46bSManish Rangankar struct iscsi_path path_req; 823ace7f46bSManish Rangankar u32 msg_type = ISCSI_KEVENT_IF_DOWN; 824ace7f46bSManish Rangankar u32 iscsi_cid = QEDI_CID_RESERVED; 825ace7f46bSManish Rangankar u16 len = 0; 826ace7f46bSManish Rangankar char *buf = NULL; 8272c675218SDan Carpenter int ret, tmp; 828ace7f46bSManish Rangankar 829ace7f46bSManish Rangankar if (!shost) { 830ace7f46bSManish Rangankar ret = -ENXIO; 831ace7f46bSManish Rangankar QEDI_ERR(NULL, "shost is NULL\n"); 832ace7f46bSManish Rangankar return ERR_PTR(ret); 833ace7f46bSManish Rangankar } 834ace7f46bSManish Rangankar 835bd571195SArnd Bergmann if (qedi_do_not_recover) { 836ace7f46bSManish Rangankar ret = -ENOMEM; 837ace7f46bSManish Rangankar return ERR_PTR(ret); 838ace7f46bSManish Rangankar } 839ace7f46bSManish Rangankar 840ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 841ace7f46bSManish Rangankar cdev = qedi->cdev; 842ace7f46bSManish Rangankar udev = qedi->udev; 843ace7f46bSManish Rangankar 844ace7f46bSManish Rangankar if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) || 845ace7f46bSManish Rangankar test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { 846ace7f46bSManish Rangankar ret = -ENOMEM; 847ace7f46bSManish Rangankar return ERR_PTR(ret); 848ace7f46bSManish Rangankar } 849ace7f46bSManish Rangankar 850ace7f46bSManish Rangankar ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint)); 851ace7f46bSManish Rangankar if (!ep) { 852ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n"); 853ace7f46bSManish Rangankar ret = -ENOMEM; 854ace7f46bSManish Rangankar return ERR_PTR(ret); 855ace7f46bSManish Rangankar } 856ace7f46bSManish Rangankar qedi_ep = ep->dd_data; 857ace7f46bSManish Rangankar memset(qedi_ep, 0, sizeof(struct qedi_endpoint)); 858ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_IDLE; 859ace7f46bSManish Rangankar qedi_ep->iscsi_cid = (u32)-1; 860ace7f46bSManish Rangankar qedi_ep->qedi = qedi; 861ace7f46bSManish Rangankar 862ace7f46bSManish Rangankar if (dst_addr->sa_family == AF_INET) { 863ace7f46bSManish Rangankar addr = (struct sockaddr_in *)dst_addr; 864ace7f46bSManish Rangankar memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr, 865ace7f46bSManish Rangankar sizeof(struct in_addr)); 866ace7f46bSManish Rangankar qedi_ep->dst_port = ntohs(addr->sin_port); 867ace7f46bSManish Rangankar qedi_ep->ip_type = TCP_IPV4; 868ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 869ace7f46bSManish Rangankar "dst_addr=%pI4, dst_port=%u\n", 870ace7f46bSManish Rangankar qedi_ep->dst_addr, qedi_ep->dst_port); 871ace7f46bSManish Rangankar } else if (dst_addr->sa_family == AF_INET6) { 872ace7f46bSManish Rangankar addr6 = (struct sockaddr_in6 *)dst_addr; 873ace7f46bSManish Rangankar memcpy(qedi_ep->dst_addr, &addr6->sin6_addr, 874ace7f46bSManish Rangankar sizeof(struct in6_addr)); 875ace7f46bSManish Rangankar qedi_ep->dst_port = ntohs(addr6->sin6_port); 876ace7f46bSManish Rangankar qedi_ep->ip_type = TCP_IPV6; 877ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 878ace7f46bSManish Rangankar "dst_addr=%pI6, dst_port=%u\n", 879ace7f46bSManish Rangankar qedi_ep->dst_addr, qedi_ep->dst_port); 880ace7f46bSManish Rangankar } else { 881ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n"); 882ace7f46bSManish Rangankar } 883ace7f46bSManish Rangankar 884ace7f46bSManish Rangankar if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) { 885ace7f46bSManish Rangankar QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n"); 886ace7f46bSManish Rangankar ret = -ENXIO; 887ace7f46bSManish Rangankar goto ep_conn_exit; 888ace7f46bSManish Rangankar } 889ace7f46bSManish Rangankar 890ace7f46bSManish Rangankar ret = qedi_alloc_sq(qedi, qedi_ep); 891ace7f46bSManish Rangankar if (ret) 892ace7f46bSManish Rangankar goto ep_conn_exit; 893ace7f46bSManish Rangankar 894ace7f46bSManish Rangankar ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle, 895ace7f46bSManish Rangankar &qedi_ep->fw_cid, &qedi_ep->p_doorbell); 896ace7f46bSManish Rangankar 897ace7f46bSManish Rangankar if (ret) { 898ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n"); 899ace7f46bSManish Rangankar ret = -ENXIO; 900ace7f46bSManish Rangankar goto ep_free_sq; 901ace7f46bSManish Rangankar } 902ace7f46bSManish Rangankar 903ace7f46bSManish Rangankar iscsi_cid = qedi_ep->handle; 904ace7f46bSManish Rangankar qedi_ep->iscsi_cid = iscsi_cid; 905ace7f46bSManish Rangankar 906ace7f46bSManish Rangankar init_waitqueue_head(&qedi_ep->ofld_wait); 907ace7f46bSManish Rangankar init_waitqueue_head(&qedi_ep->tcp_ofld_wait); 908ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_OFLDCONN_START; 909ace7f46bSManish Rangankar qedi->ep_tbl[iscsi_cid] = qedi_ep; 910ace7f46bSManish Rangankar 911ace7f46bSManish Rangankar buf = (char *)&path_req; 912ace7f46bSManish Rangankar len = sizeof(path_req); 913ace7f46bSManish Rangankar memset(&path_req, 0, len); 914ace7f46bSManish Rangankar 915ace7f46bSManish Rangankar msg_type = ISCSI_KEVENT_PATH_REQ; 916ace7f46bSManish Rangankar path_req.handle = (u64)qedi_ep->iscsi_cid; 917ace7f46bSManish Rangankar path_req.pmtu = qedi->ll2_mtu; 918ace7f46bSManish Rangankar qedi_ep->pmtu = qedi->ll2_mtu; 919ace7f46bSManish Rangankar if (qedi_ep->ip_type == TCP_IPV4) { 920ace7f46bSManish Rangankar memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr, 921ace7f46bSManish Rangankar sizeof(struct in_addr)); 922ace7f46bSManish Rangankar path_req.ip_addr_len = 4; 923ace7f46bSManish Rangankar } else { 924ace7f46bSManish Rangankar memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr, 925ace7f46bSManish Rangankar sizeof(struct in6_addr)); 926ace7f46bSManish Rangankar path_req.ip_addr_len = 16; 927ace7f46bSManish Rangankar } 928ace7f46bSManish Rangankar 929ace7f46bSManish Rangankar ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf, 930ace7f46bSManish Rangankar len); 931ace7f46bSManish Rangankar if (ret) { 932ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 933ace7f46bSManish Rangankar "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n", 934ace7f46bSManish Rangankar iscsi_cid, ret); 935ace7f46bSManish Rangankar goto ep_rel_conn; 936ace7f46bSManish Rangankar } 937ace7f46bSManish Rangankar 938ace7f46bSManish Rangankar atomic_inc(&qedi->num_offloads); 939ace7f46bSManish Rangankar return ep; 940ace7f46bSManish Rangankar 941ace7f46bSManish Rangankar ep_rel_conn: 942ace7f46bSManish Rangankar qedi->ep_tbl[iscsi_cid] = NULL; 9432c675218SDan Carpenter tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); 9442c675218SDan Carpenter if (tmp) 945ace7f46bSManish Rangankar QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n", 9462c675218SDan Carpenter tmp); 947ace7f46bSManish Rangankar ep_free_sq: 948ace7f46bSManish Rangankar qedi_free_sq(qedi, qedi_ep); 949ace7f46bSManish Rangankar ep_conn_exit: 950ace7f46bSManish Rangankar iscsi_destroy_endpoint(ep); 951ace7f46bSManish Rangankar return ERR_PTR(ret); 952ace7f46bSManish Rangankar } 953ace7f46bSManish Rangankar 954ace7f46bSManish Rangankar static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) 955ace7f46bSManish Rangankar { 956ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 957ace7f46bSManish Rangankar int ret = 0; 958ace7f46bSManish Rangankar 959bd571195SArnd Bergmann if (qedi_do_not_recover) 960ace7f46bSManish Rangankar return 1; 961ace7f46bSManish Rangankar 962ace7f46bSManish Rangankar qedi_ep = ep->dd_data; 963ace7f46bSManish Rangankar if (qedi_ep->state == EP_STATE_IDLE || 964ace7f46bSManish Rangankar qedi_ep->state == EP_STATE_OFLDCONN_FAILED) 965ace7f46bSManish Rangankar return -1; 966ace7f46bSManish Rangankar 967ace7f46bSManish Rangankar if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL) 968ace7f46bSManish Rangankar ret = 1; 969ace7f46bSManish Rangankar 970ace7f46bSManish Rangankar ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait, 971ace7f46bSManish Rangankar QEDI_OFLD_WAIT_STATE(qedi_ep), 972ace7f46bSManish Rangankar msecs_to_jiffies(timeout_ms)); 973ace7f46bSManish Rangankar 974ace7f46bSManish Rangankar if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED) 975ace7f46bSManish Rangankar ret = -1; 976ace7f46bSManish Rangankar 977ace7f46bSManish Rangankar if (ret > 0) 978ace7f46bSManish Rangankar return 1; 979ace7f46bSManish Rangankar else if (!ret) 980ace7f46bSManish Rangankar return 0; 981ace7f46bSManish Rangankar else 982ace7f46bSManish Rangankar return ret; 983ace7f46bSManish Rangankar } 984ace7f46bSManish Rangankar 985ace7f46bSManish Rangankar static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) 986ace7f46bSManish Rangankar { 987ace7f46bSManish Rangankar struct qedi_cmd *cmd, *cmd_tmp; 988ace7f46bSManish Rangankar 989ace7f46bSManish Rangankar list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 990ace7f46bSManish Rangankar io_cmd) { 991ace7f46bSManish Rangankar list_del_init(&cmd->io_cmd); 992ace7f46bSManish Rangankar qedi_conn->active_cmd_count--; 993ace7f46bSManish Rangankar } 994ace7f46bSManish Rangankar } 995ace7f46bSManish Rangankar 996ace7f46bSManish Rangankar static void qedi_ep_disconnect(struct iscsi_endpoint *ep) 997ace7f46bSManish Rangankar { 998ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 999ace7f46bSManish Rangankar struct qedi_conn *qedi_conn = NULL; 1000ace7f46bSManish Rangankar struct iscsi_conn *conn = NULL; 1001ace7f46bSManish Rangankar struct qedi_ctx *qedi; 1002ace7f46bSManish Rangankar int ret = 0; 1003ace7f46bSManish Rangankar int wait_delay = 20 * HZ; 1004ace7f46bSManish Rangankar int abrt_conn = 0; 1005ace7f46bSManish Rangankar int count = 10; 1006ace7f46bSManish Rangankar 1007ace7f46bSManish Rangankar qedi_ep = ep->dd_data; 1008ace7f46bSManish Rangankar qedi = qedi_ep->qedi; 1009ace7f46bSManish Rangankar 1010ace7f46bSManish Rangankar flush_work(&qedi_ep->offload_work); 1011ace7f46bSManish Rangankar 1012ace7f46bSManish Rangankar if (qedi_ep->conn) { 1013ace7f46bSManish Rangankar qedi_conn = qedi_ep->conn; 1014ace7f46bSManish Rangankar conn = qedi_conn->cls_conn->dd_data; 1015ace7f46bSManish Rangankar iscsi_suspend_queue(conn); 1016ace7f46bSManish Rangankar abrt_conn = qedi_conn->abrt_conn; 1017ace7f46bSManish Rangankar 1018ace7f46bSManish Rangankar while (count--) { 1019ace7f46bSManish Rangankar if (!test_bit(QEDI_CONN_FW_CLEANUP, 1020ace7f46bSManish Rangankar &qedi_conn->flags)) { 1021ace7f46bSManish Rangankar break; 1022ace7f46bSManish Rangankar } 1023ace7f46bSManish Rangankar msleep(1000); 1024ace7f46bSManish Rangankar } 1025ace7f46bSManish Rangankar 1026ace7f46bSManish Rangankar if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { 1027bd571195SArnd Bergmann if (qedi_do_not_recover) { 1028ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1029ace7f46bSManish Rangankar "Do not recover cid=0x%x\n", 1030ace7f46bSManish Rangankar qedi_ep->iscsi_cid); 1031ace7f46bSManish Rangankar goto ep_exit_recover; 1032ace7f46bSManish Rangankar } 1033ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1034ace7f46bSManish Rangankar "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n", 1035ace7f46bSManish Rangankar qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state); 1036ace7f46bSManish Rangankar qedi_cleanup_active_cmd_list(qedi_conn); 1037ace7f46bSManish Rangankar goto ep_release_conn; 1038ace7f46bSManish Rangankar } 1039ace7f46bSManish Rangankar } 1040ace7f46bSManish Rangankar 1041bd571195SArnd Bergmann if (qedi_do_not_recover) 1042ace7f46bSManish Rangankar goto ep_exit_recover; 1043ace7f46bSManish Rangankar 1044ace7f46bSManish Rangankar switch (qedi_ep->state) { 1045ace7f46bSManish Rangankar case EP_STATE_OFLDCONN_START: 1046ace7f46bSManish Rangankar goto ep_release_conn; 1047ace7f46bSManish Rangankar case EP_STATE_OFLDCONN_FAILED: 1048ace7f46bSManish Rangankar break; 1049ace7f46bSManish Rangankar case EP_STATE_OFLDCONN_COMPL: 1050ace7f46bSManish Rangankar if (unlikely(!qedi_conn)) 1051ace7f46bSManish Rangankar break; 1052ace7f46bSManish Rangankar 1053ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1054ace7f46bSManish Rangankar "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n", 1055ace7f46bSManish Rangankar qedi_conn->active_cmd_count, abrt_conn, 1056ace7f46bSManish Rangankar qedi_ep->state, 1057ace7f46bSManish Rangankar qedi_ep->iscsi_cid, 1058ace7f46bSManish Rangankar qedi_ep->conn 1059ace7f46bSManish Rangankar ); 1060ace7f46bSManish Rangankar 1061ace7f46bSManish Rangankar if (!qedi_conn->active_cmd_count) 1062ace7f46bSManish Rangankar abrt_conn = 0; 1063ace7f46bSManish Rangankar else 1064ace7f46bSManish Rangankar abrt_conn = 1; 1065ace7f46bSManish Rangankar 1066ace7f46bSManish Rangankar if (abrt_conn) 1067ace7f46bSManish Rangankar qedi_clearsq(qedi, qedi_conn, NULL); 1068ace7f46bSManish Rangankar break; 1069ace7f46bSManish Rangankar default: 1070ace7f46bSManish Rangankar break; 1071ace7f46bSManish Rangankar } 1072ace7f46bSManish Rangankar 1073ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_DISCONN_START; 1074ace7f46bSManish Rangankar ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn); 1075ace7f46bSManish Rangankar if (ret) { 1076ace7f46bSManish Rangankar QEDI_WARN(&qedi->dbg_ctx, 1077ace7f46bSManish Rangankar "destroy_conn failed returned %d\n", ret); 1078ace7f46bSManish Rangankar } else { 1079ace7f46bSManish Rangankar ret = wait_event_interruptible_timeout( 1080ace7f46bSManish Rangankar qedi_ep->tcp_ofld_wait, 1081ace7f46bSManish Rangankar (qedi_ep->state != 1082ace7f46bSManish Rangankar EP_STATE_DISCONN_START), 1083ace7f46bSManish Rangankar wait_delay); 1084ace7f46bSManish Rangankar if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) { 1085ace7f46bSManish Rangankar QEDI_WARN(&qedi->dbg_ctx, 1086ace7f46bSManish Rangankar "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n", 1087ace7f46bSManish Rangankar ret, wait_delay, qedi_ep->iscsi_cid); 1088ace7f46bSManish Rangankar } 1089ace7f46bSManish Rangankar } 1090ace7f46bSManish Rangankar 1091ace7f46bSManish Rangankar ep_release_conn: 1092ace7f46bSManish Rangankar ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); 1093ace7f46bSManish Rangankar if (ret) 1094ace7f46bSManish Rangankar QEDI_WARN(&qedi->dbg_ctx, 1095ace7f46bSManish Rangankar "release_conn returned %d, cid=0x%x\n", 1096ace7f46bSManish Rangankar ret, qedi_ep->iscsi_cid); 1097ace7f46bSManish Rangankar ep_exit_recover: 1098ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_IDLE; 1099ace7f46bSManish Rangankar qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL; 1100ace7f46bSManish Rangankar qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL; 1101ace7f46bSManish Rangankar qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port); 1102ace7f46bSManish Rangankar qedi_free_sq(qedi, qedi_ep); 1103ace7f46bSManish Rangankar 1104ace7f46bSManish Rangankar if (qedi_conn) 1105ace7f46bSManish Rangankar qedi_conn->ep = NULL; 1106ace7f46bSManish Rangankar 1107ace7f46bSManish Rangankar qedi_ep->conn = NULL; 1108ace7f46bSManish Rangankar qedi_ep->qedi = NULL; 1109ace7f46bSManish Rangankar atomic_dec(&qedi->num_offloads); 1110ace7f46bSManish Rangankar 1111ace7f46bSManish Rangankar iscsi_destroy_endpoint(ep); 1112ace7f46bSManish Rangankar } 1113ace7f46bSManish Rangankar 1114ace7f46bSManish Rangankar static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid) 1115ace7f46bSManish Rangankar { 1116ace7f46bSManish Rangankar struct qed_dev *cdev = qedi->cdev; 1117ace7f46bSManish Rangankar struct qedi_uio_dev *udev; 1118ace7f46bSManish Rangankar struct qedi_uio_ctrl *uctrl; 1119ace7f46bSManish Rangankar struct sk_buff *skb; 1120ace7f46bSManish Rangankar u32 len; 1121ace7f46bSManish Rangankar int rc = 0; 1122ace7f46bSManish Rangankar 1123ace7f46bSManish Rangankar udev = qedi->udev; 1124ace7f46bSManish Rangankar if (!udev) { 1125ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n"); 1126ace7f46bSManish Rangankar return -EINVAL; 1127ace7f46bSManish Rangankar } 1128ace7f46bSManish Rangankar 1129ace7f46bSManish Rangankar uctrl = (struct qedi_uio_ctrl *)udev->uctrl; 1130ace7f46bSManish Rangankar if (!uctrl) { 1131ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n"); 1132ace7f46bSManish Rangankar return -EINVAL; 1133ace7f46bSManish Rangankar } 1134ace7f46bSManish Rangankar 1135ace7f46bSManish Rangankar len = uctrl->host_tx_pkt_len; 1136ace7f46bSManish Rangankar if (!len) { 1137ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len); 1138ace7f46bSManish Rangankar return -EINVAL; 1139ace7f46bSManish Rangankar } 1140ace7f46bSManish Rangankar 1141ace7f46bSManish Rangankar skb = alloc_skb(len, GFP_ATOMIC); 1142ace7f46bSManish Rangankar if (!skb) { 1143ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n"); 1144ace7f46bSManish Rangankar return -EINVAL; 1145ace7f46bSManish Rangankar } 1146ace7f46bSManish Rangankar 1147ace7f46bSManish Rangankar skb_put(skb, len); 1148ace7f46bSManish Rangankar memcpy(skb->data, udev->tx_pkt, len); 1149ace7f46bSManish Rangankar skb->ip_summed = CHECKSUM_NONE; 1150ace7f46bSManish Rangankar 1151ace7f46bSManish Rangankar if (vlanid) 1152ace7f46bSManish Rangankar __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid); 1153ace7f46bSManish Rangankar 1154ace7f46bSManish Rangankar rc = qedi_ops->ll2->start_xmit(cdev, skb); 1155ace7f46bSManish Rangankar if (rc) { 1156ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n", 1157ace7f46bSManish Rangankar rc); 1158ace7f46bSManish Rangankar kfree_skb(skb); 1159ace7f46bSManish Rangankar } 1160ace7f46bSManish Rangankar 1161ace7f46bSManish Rangankar uctrl->host_tx_pkt_len = 0; 1162ace7f46bSManish Rangankar uctrl->hw_tx_cons++; 1163ace7f46bSManish Rangankar 1164ace7f46bSManish Rangankar return rc; 1165ace7f46bSManish Rangankar } 1166ace7f46bSManish Rangankar 1167ace7f46bSManish Rangankar static void qedi_offload_work(struct work_struct *work) 1168ace7f46bSManish Rangankar { 1169ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep = 1170ace7f46bSManish Rangankar container_of(work, struct qedi_endpoint, offload_work); 1171ace7f46bSManish Rangankar struct qedi_ctx *qedi; 1172ace7f46bSManish Rangankar int wait_delay = 20 * HZ; 1173ace7f46bSManish Rangankar int ret; 1174ace7f46bSManish Rangankar 1175ace7f46bSManish Rangankar qedi = qedi_ep->qedi; 1176ace7f46bSManish Rangankar 1177ace7f46bSManish Rangankar ret = qedi_iscsi_offload_conn(qedi_ep); 1178ace7f46bSManish Rangankar if (ret) { 1179ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 1180ace7f46bSManish Rangankar "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n", 1181ace7f46bSManish Rangankar qedi_ep->iscsi_cid, qedi_ep, ret); 1182ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_OFLDCONN_FAILED; 1183ace7f46bSManish Rangankar return; 1184ace7f46bSManish Rangankar } 1185ace7f46bSManish Rangankar 1186ace7f46bSManish Rangankar ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait, 1187ace7f46bSManish Rangankar (qedi_ep->state == 1188ace7f46bSManish Rangankar EP_STATE_OFLDCONN_COMPL), 1189ace7f46bSManish Rangankar wait_delay); 1190ace7f46bSManish Rangankar if ((ret <= 0) || (qedi_ep->state != EP_STATE_OFLDCONN_COMPL)) { 1191ace7f46bSManish Rangankar qedi_ep->state = EP_STATE_OFLDCONN_FAILED; 1192ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 1193ace7f46bSManish Rangankar "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n", 1194ace7f46bSManish Rangankar qedi_ep->iscsi_cid, qedi_ep); 1195ace7f46bSManish Rangankar } 1196ace7f46bSManish Rangankar } 1197ace7f46bSManish Rangankar 1198ace7f46bSManish Rangankar static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) 1199ace7f46bSManish Rangankar { 1200ace7f46bSManish Rangankar struct qedi_ctx *qedi; 1201ace7f46bSManish Rangankar struct qedi_endpoint *qedi_ep; 1202ace7f46bSManish Rangankar int ret = 0; 1203ace7f46bSManish Rangankar u32 iscsi_cid; 1204ace7f46bSManish Rangankar u16 port_id = 0; 1205ace7f46bSManish Rangankar 1206ace7f46bSManish Rangankar if (!shost) { 1207ace7f46bSManish Rangankar ret = -ENXIO; 1208ace7f46bSManish Rangankar QEDI_ERR(NULL, "shost is NULL\n"); 1209ace7f46bSManish Rangankar return ret; 1210ace7f46bSManish Rangankar } 1211ace7f46bSManish Rangankar 1212ace7f46bSManish Rangankar if (strcmp(shost->hostt->proc_name, "qedi")) { 1213ace7f46bSManish Rangankar ret = -ENXIO; 1214ace7f46bSManish Rangankar QEDI_ERR(NULL, "shost %s is invalid\n", 1215ace7f46bSManish Rangankar shost->hostt->proc_name); 1216ace7f46bSManish Rangankar return ret; 1217ace7f46bSManish Rangankar } 1218ace7f46bSManish Rangankar 1219ace7f46bSManish Rangankar qedi = iscsi_host_priv(shost); 1220ace7f46bSManish Rangankar if (path_data->handle == QEDI_PATH_HANDLE) { 1221ace7f46bSManish Rangankar ret = qedi_data_avail(qedi, path_data->vlan_id); 1222ace7f46bSManish Rangankar goto set_path_exit; 1223ace7f46bSManish Rangankar } 1224ace7f46bSManish Rangankar 1225ace7f46bSManish Rangankar iscsi_cid = (u32)path_data->handle; 1226ace7f46bSManish Rangankar qedi_ep = qedi->ep_tbl[iscsi_cid]; 12270ea9314fSmanish.rangankar@cavium.com QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1228ace7f46bSManish Rangankar "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep); 12290ea9314fSmanish.rangankar@cavium.com if (!qedi_ep) { 12300ea9314fSmanish.rangankar@cavium.com ret = -EINVAL; 12310ea9314fSmanish.rangankar@cavium.com goto set_path_exit; 12320ea9314fSmanish.rangankar@cavium.com } 1233ace7f46bSManish Rangankar 1234ace7f46bSManish Rangankar if (!is_valid_ether_addr(&path_data->mac_addr[0])) { 1235ace7f46bSManish Rangankar QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n"); 1236ace7f46bSManish Rangankar ret = -EIO; 1237ace7f46bSManish Rangankar goto set_path_exit; 1238ace7f46bSManish Rangankar } 1239ace7f46bSManish Rangankar 1240ace7f46bSManish Rangankar ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]); 1241ace7f46bSManish Rangankar ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]); 1242ace7f46bSManish Rangankar 1243ace7f46bSManish Rangankar qedi_ep->vlan_id = path_data->vlan_id; 1244ace7f46bSManish Rangankar if (path_data->pmtu < DEF_PATH_MTU) { 1245ace7f46bSManish Rangankar qedi_ep->pmtu = qedi->ll2_mtu; 1246ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1247ace7f46bSManish Rangankar "MTU cannot be %u, using default MTU %u\n", 1248ace7f46bSManish Rangankar path_data->pmtu, qedi_ep->pmtu); 1249ace7f46bSManish Rangankar } 1250ace7f46bSManish Rangankar 1251ace7f46bSManish Rangankar if (path_data->pmtu != qedi->ll2_mtu) { 1252ace7f46bSManish Rangankar if (path_data->pmtu > JUMBO_MTU) { 1253ace7f46bSManish Rangankar ret = -EINVAL; 1254ace7f46bSManish Rangankar QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu); 1255ace7f46bSManish Rangankar goto set_path_exit; 1256ace7f46bSManish Rangankar } 1257ace7f46bSManish Rangankar 1258ace7f46bSManish Rangankar qedi_reset_host_mtu(qedi, path_data->pmtu); 1259ace7f46bSManish Rangankar qedi_ep->pmtu = qedi->ll2_mtu; 1260ace7f46bSManish Rangankar } 1261ace7f46bSManish Rangankar 1262ace7f46bSManish Rangankar port_id = qedi_ep->src_port; 1263ace7f46bSManish Rangankar if (port_id >= QEDI_LOCAL_PORT_MIN && 1264ace7f46bSManish Rangankar port_id < QEDI_LOCAL_PORT_MAX) { 1265ace7f46bSManish Rangankar if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id)) 1266ace7f46bSManish Rangankar port_id = 0; 1267ace7f46bSManish Rangankar } else { 1268ace7f46bSManish Rangankar port_id = 0; 1269ace7f46bSManish Rangankar } 1270ace7f46bSManish Rangankar 1271ace7f46bSManish Rangankar if (!port_id) { 1272ace7f46bSManish Rangankar port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl); 1273ace7f46bSManish Rangankar if (port_id == QEDI_LOCAL_PORT_INVALID) { 1274ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 1275ace7f46bSManish Rangankar "Failed to allocate port id for iscsi_cid=0x%x\n", 1276ace7f46bSManish Rangankar iscsi_cid); 1277ace7f46bSManish Rangankar ret = -ENOMEM; 1278ace7f46bSManish Rangankar goto set_path_exit; 1279ace7f46bSManish Rangankar } 1280ace7f46bSManish Rangankar } 1281ace7f46bSManish Rangankar 1282ace7f46bSManish Rangankar qedi_ep->src_port = port_id; 1283ace7f46bSManish Rangankar 1284ace7f46bSManish Rangankar if (qedi_ep->ip_type == TCP_IPV4) { 1285ace7f46bSManish Rangankar memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr, 1286ace7f46bSManish Rangankar sizeof(struct in_addr)); 1287ace7f46bSManish Rangankar memcpy(&qedi->src_ip[0], &path_data->src.v4_addr, 1288ace7f46bSManish Rangankar sizeof(struct in_addr)); 1289ace7f46bSManish Rangankar qedi->ip_type = TCP_IPV4; 1290ace7f46bSManish Rangankar 1291ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1292ace7f46bSManish Rangankar "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n", 1293ace7f46bSManish Rangankar qedi_ep->src_addr, qedi_ep->src_port, 1294ace7f46bSManish Rangankar qedi_ep->dst_addr, qedi_ep->dst_port); 1295ace7f46bSManish Rangankar } else { 1296ace7f46bSManish Rangankar memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr, 1297ace7f46bSManish Rangankar sizeof(struct in6_addr)); 1298ace7f46bSManish Rangankar memcpy(&qedi->src_ip[0], &path_data->src.v6_addr, 1299ace7f46bSManish Rangankar sizeof(struct in6_addr)); 1300ace7f46bSManish Rangankar qedi->ip_type = TCP_IPV6; 1301ace7f46bSManish Rangankar 1302ace7f46bSManish Rangankar QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1303ace7f46bSManish Rangankar "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n", 1304ace7f46bSManish Rangankar qedi_ep->src_addr, qedi_ep->src_port, 1305ace7f46bSManish Rangankar qedi_ep->dst_addr, qedi_ep->dst_port); 1306ace7f46bSManish Rangankar } 1307ace7f46bSManish Rangankar 1308ace7f46bSManish Rangankar INIT_WORK(&qedi_ep->offload_work, qedi_offload_work); 1309ace7f46bSManish Rangankar queue_work(qedi->offload_thread, &qedi_ep->offload_work); 1310ace7f46bSManish Rangankar 1311ace7f46bSManish Rangankar ret = 0; 1312ace7f46bSManish Rangankar 1313ace7f46bSManish Rangankar set_path_exit: 1314ace7f46bSManish Rangankar return ret; 1315ace7f46bSManish Rangankar } 1316ace7f46bSManish Rangankar 1317ace7f46bSManish Rangankar static umode_t qedi_attr_is_visible(int param_type, int param) 1318ace7f46bSManish Rangankar { 1319ace7f46bSManish Rangankar switch (param_type) { 1320ace7f46bSManish Rangankar case ISCSI_HOST_PARAM: 1321ace7f46bSManish Rangankar switch (param) { 1322ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_NETDEV_NAME: 1323ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_HWADDRESS: 1324ace7f46bSManish Rangankar case ISCSI_HOST_PARAM_IPADDRESS: 1325ace7f46bSManish Rangankar return 0444; 1326ace7f46bSManish Rangankar default: 1327ace7f46bSManish Rangankar return 0; 1328ace7f46bSManish Rangankar } 1329ace7f46bSManish Rangankar case ISCSI_PARAM: 1330ace7f46bSManish Rangankar switch (param) { 1331ace7f46bSManish Rangankar case ISCSI_PARAM_MAX_RECV_DLENGTH: 1332ace7f46bSManish Rangankar case ISCSI_PARAM_MAX_XMIT_DLENGTH: 1333ace7f46bSManish Rangankar case ISCSI_PARAM_HDRDGST_EN: 1334ace7f46bSManish Rangankar case ISCSI_PARAM_DATADGST_EN: 1335ace7f46bSManish Rangankar case ISCSI_PARAM_CONN_ADDRESS: 1336ace7f46bSManish Rangankar case ISCSI_PARAM_CONN_PORT: 1337ace7f46bSManish Rangankar case ISCSI_PARAM_EXP_STATSN: 1338ace7f46bSManish Rangankar case ISCSI_PARAM_PERSISTENT_ADDRESS: 1339ace7f46bSManish Rangankar case ISCSI_PARAM_PERSISTENT_PORT: 1340ace7f46bSManish Rangankar case ISCSI_PARAM_PING_TMO: 1341ace7f46bSManish Rangankar case ISCSI_PARAM_RECV_TMO: 1342ace7f46bSManish Rangankar case ISCSI_PARAM_INITIAL_R2T_EN: 1343ace7f46bSManish Rangankar case ISCSI_PARAM_MAX_R2T: 1344ace7f46bSManish Rangankar case ISCSI_PARAM_IMM_DATA_EN: 1345ace7f46bSManish Rangankar case ISCSI_PARAM_FIRST_BURST: 1346ace7f46bSManish Rangankar case ISCSI_PARAM_MAX_BURST: 1347ace7f46bSManish Rangankar case ISCSI_PARAM_PDU_INORDER_EN: 1348ace7f46bSManish Rangankar case ISCSI_PARAM_DATASEQ_INORDER_EN: 1349ace7f46bSManish Rangankar case ISCSI_PARAM_ERL: 1350ace7f46bSManish Rangankar case ISCSI_PARAM_TARGET_NAME: 1351ace7f46bSManish Rangankar case ISCSI_PARAM_TPGT: 1352ace7f46bSManish Rangankar case ISCSI_PARAM_USERNAME: 1353ace7f46bSManish Rangankar case ISCSI_PARAM_PASSWORD: 1354ace7f46bSManish Rangankar case ISCSI_PARAM_USERNAME_IN: 1355ace7f46bSManish Rangankar case ISCSI_PARAM_PASSWORD_IN: 1356ace7f46bSManish Rangankar case ISCSI_PARAM_FAST_ABORT: 1357ace7f46bSManish Rangankar case ISCSI_PARAM_ABORT_TMO: 1358ace7f46bSManish Rangankar case ISCSI_PARAM_LU_RESET_TMO: 1359ace7f46bSManish Rangankar case ISCSI_PARAM_TGT_RESET_TMO: 1360ace7f46bSManish Rangankar case ISCSI_PARAM_IFACE_NAME: 1361ace7f46bSManish Rangankar case ISCSI_PARAM_INITIATOR_NAME: 1362ace7f46bSManish Rangankar case ISCSI_PARAM_BOOT_ROOT: 1363ace7f46bSManish Rangankar case ISCSI_PARAM_BOOT_NIC: 1364ace7f46bSManish Rangankar case ISCSI_PARAM_BOOT_TARGET: 1365ace7f46bSManish Rangankar return 0444; 1366ace7f46bSManish Rangankar default: 1367ace7f46bSManish Rangankar return 0; 1368ace7f46bSManish Rangankar } 1369ace7f46bSManish Rangankar } 1370ace7f46bSManish Rangankar 1371ace7f46bSManish Rangankar return 0; 1372ace7f46bSManish Rangankar } 1373ace7f46bSManish Rangankar 1374ace7f46bSManish Rangankar static void qedi_cleanup_task(struct iscsi_task *task) 1375ace7f46bSManish Rangankar { 1376ace7f46bSManish Rangankar if (!task->sc || task->state == ISCSI_TASK_PENDING) { 1377ace7f46bSManish Rangankar QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n", 13786dc618cdSElena Reshetova refcount_read(&task->refcount)); 1379ace7f46bSManish Rangankar return; 1380ace7f46bSManish Rangankar } 1381ace7f46bSManish Rangankar 1382ace7f46bSManish Rangankar qedi_iscsi_unmap_sg_list(task->dd_data); 1383ace7f46bSManish Rangankar } 1384ace7f46bSManish Rangankar 1385ace7f46bSManish Rangankar struct iscsi_transport qedi_iscsi_transport = { 1386ace7f46bSManish Rangankar .owner = THIS_MODULE, 1387ace7f46bSManish Rangankar .name = QEDI_MODULE_NAME, 1388ace7f46bSManish Rangankar .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST | 1389ace7f46bSManish Rangankar CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO, 1390ace7f46bSManish Rangankar .create_session = qedi_session_create, 1391ace7f46bSManish Rangankar .destroy_session = qedi_session_destroy, 1392ace7f46bSManish Rangankar .create_conn = qedi_conn_create, 1393ace7f46bSManish Rangankar .bind_conn = qedi_conn_bind, 1394ace7f46bSManish Rangankar .start_conn = qedi_conn_start, 1395ace7f46bSManish Rangankar .stop_conn = iscsi_conn_stop, 1396ace7f46bSManish Rangankar .destroy_conn = qedi_conn_destroy, 1397ace7f46bSManish Rangankar .set_param = iscsi_set_param, 1398ace7f46bSManish Rangankar .get_ep_param = qedi_ep_get_param, 1399ace7f46bSManish Rangankar .get_conn_param = iscsi_conn_get_param, 1400ace7f46bSManish Rangankar .get_session_param = iscsi_session_get_param, 1401ace7f46bSManish Rangankar .get_host_param = qedi_host_get_param, 1402ace7f46bSManish Rangankar .send_pdu = iscsi_conn_send_pdu, 1403ace7f46bSManish Rangankar .get_stats = qedi_conn_get_stats, 1404ace7f46bSManish Rangankar .xmit_task = qedi_task_xmit, 1405ace7f46bSManish Rangankar .cleanup_task = qedi_cleanup_task, 1406ace7f46bSManish Rangankar .session_recovery_timedout = iscsi_session_recovery_timedout, 1407ace7f46bSManish Rangankar .ep_connect = qedi_ep_connect, 1408ace7f46bSManish Rangankar .ep_poll = qedi_ep_poll, 1409ace7f46bSManish Rangankar .ep_disconnect = qedi_ep_disconnect, 1410ace7f46bSManish Rangankar .set_path = qedi_set_path, 1411ace7f46bSManish Rangankar .attr_is_visible = qedi_attr_is_visible, 1412ace7f46bSManish Rangankar }; 1413ace7f46bSManish Rangankar 1414ace7f46bSManish Rangankar void qedi_start_conn_recovery(struct qedi_ctx *qedi, 1415ace7f46bSManish Rangankar struct qedi_conn *qedi_conn) 1416ace7f46bSManish Rangankar { 1417ace7f46bSManish Rangankar struct iscsi_cls_session *cls_sess; 1418ace7f46bSManish Rangankar struct iscsi_cls_conn *cls_conn; 1419ace7f46bSManish Rangankar struct iscsi_conn *conn; 1420ace7f46bSManish Rangankar 1421ace7f46bSManish Rangankar cls_conn = qedi_conn->cls_conn; 1422ace7f46bSManish Rangankar conn = cls_conn->dd_data; 1423ace7f46bSManish Rangankar cls_sess = iscsi_conn_to_session(cls_conn); 1424ace7f46bSManish Rangankar 1425ace7f46bSManish Rangankar if (iscsi_is_session_online(cls_sess)) { 1426ace7f46bSManish Rangankar qedi_conn->abrt_conn = 1; 1427ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, 1428ace7f46bSManish Rangankar "Failing connection, state=0x%x, cid=0x%x\n", 1429ace7f46bSManish Rangankar conn->session->state, qedi_conn->iscsi_conn_id); 1430ace7f46bSManish Rangankar iscsi_conn_failure(qedi_conn->cls_conn->dd_data, 1431ace7f46bSManish Rangankar ISCSI_ERR_CONN_FAILED); 1432ace7f46bSManish Rangankar } 1433ace7f46bSManish Rangankar } 1434ace7f46bSManish Rangankar 1435ace7f46bSManish Rangankar static const struct { 1436ace7f46bSManish Rangankar enum iscsi_error_types error_code; 1437ace7f46bSManish Rangankar char *err_string; 1438ace7f46bSManish Rangankar } qedi_iscsi_error[] = { 1439ace7f46bSManish Rangankar { ISCSI_STATUS_NONE, 1440ace7f46bSManish Rangankar "tcp_error none" 1441ace7f46bSManish Rangankar }, 1442ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_TASK_CID_MISMATCH, 1443ace7f46bSManish Rangankar "task cid mismatch" 1444ace7f46bSManish Rangankar }, 1445ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_TASK_NOT_VALID, 1446ace7f46bSManish Rangankar "invalid task" 1447ace7f46bSManish Rangankar }, 1448ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_RQ_RING_IS_FULL, 1449ace7f46bSManish Rangankar "rq ring full" 1450ace7f46bSManish Rangankar }, 1451ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL, 1452ace7f46bSManish Rangankar "cmdq ring full" 1453ace7f46bSManish Rangankar }, 1454ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_HQE_CACHING_FAILED, 1455ace7f46bSManish Rangankar "sge caching failed" 1456ace7f46bSManish Rangankar }, 1457ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR, 1458ace7f46bSManish Rangankar "hdr digest error" 1459ace7f46bSManish Rangankar }, 1460ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR, 1461ace7f46bSManish Rangankar "local cmpl error" 1462ace7f46bSManish Rangankar }, 1463ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_DATA_OVERRUN, 1464ace7f46bSManish Rangankar "invalid task" 1465ace7f46bSManish Rangankar }, 1466ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR, 1467ace7f46bSManish Rangankar "out of sge error" 1468ace7f46bSManish Rangankar }, 1469ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR, 1470ace7f46bSManish Rangankar "tcp ip fragment error" 1471ace7f46bSManish Rangankar }, 1472ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN, 1473ace7f46bSManish Rangankar "AHS len protocol error" 1474ace7f46bSManish Rangankar }, 1475ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE, 1476ace7f46bSManish Rangankar "itt out of range error" 1477ace7f46bSManish Rangankar }, 1478ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE, 1479ace7f46bSManish Rangankar "data seg more than pdu size" 1480ace7f46bSManish Rangankar }, 1481ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE, 1482ace7f46bSManish Rangankar "invalid opcode" 1483ace7f46bSManish Rangankar }, 1484ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE, 1485ace7f46bSManish Rangankar "invalid opcode before update" 1486ace7f46bSManish Rangankar }, 1487ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL, 1488ace7f46bSManish Rangankar "unexpected opcode" 1489ace7f46bSManish Rangankar }, 1490ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA, 1491ace7f46bSManish Rangankar "r2t carries no data" 1492ace7f46bSManish Rangankar }, 1493ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN, 1494ace7f46bSManish Rangankar "data sn error" 1495ace7f46bSManish Rangankar }, 1496ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT, 1497ace7f46bSManish Rangankar "data TTT error" 1498ace7f46bSManish Rangankar }, 1499ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT, 1500ace7f46bSManish Rangankar "r2t TTT error" 1501ace7f46bSManish Rangankar }, 1502ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET, 1503ace7f46bSManish Rangankar "buffer offset error" 1504ace7f46bSManish Rangankar }, 1505ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO, 1506ace7f46bSManish Rangankar "buffer offset ooo" 1507ace7f46bSManish Rangankar }, 1508ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN, 1509ace7f46bSManish Rangankar "data seg len 0" 1510ace7f46bSManish Rangankar }, 1511ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0, 1512ace7f46bSManish Rangankar "data xer len error" 1513ace7f46bSManish Rangankar }, 1514ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1, 1515ace7f46bSManish Rangankar "data xer len1 error" 1516ace7f46bSManish Rangankar }, 1517ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2, 1518ace7f46bSManish Rangankar "data xer len2 error" 1519ace7f46bSManish Rangankar }, 1520ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN, 1521ace7f46bSManish Rangankar "protocol lun error" 1522ace7f46bSManish Rangankar }, 1523ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO, 1524ace7f46bSManish Rangankar "f bit zero error" 1525ace7f46bSManish Rangankar }, 1526ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN, 1527ace7f46bSManish Rangankar "exp stat sn error" 1528ace7f46bSManish Rangankar }, 1529ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO, 1530ace7f46bSManish Rangankar "dsl not zero error" 1531ace7f46bSManish Rangankar }, 1532ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL, 1533ace7f46bSManish Rangankar "invalid dsl" 1534ace7f46bSManish Rangankar }, 1535ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG, 1536ace7f46bSManish Rangankar "data seg len too big" 1537ace7f46bSManish Rangankar }, 1538ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT, 1539ace7f46bSManish Rangankar "outstanding r2t count error" 1540ace7f46bSManish Rangankar }, 1541ace7f46bSManish Rangankar { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH, 1542ace7f46bSManish Rangankar "sense datalen error" 1543ace7f46bSManish Rangankar }, 1544ace7f46bSManish Rangankar }; 1545ace7f46bSManish Rangankar 1546ace7f46bSManish Rangankar char *qedi_get_iscsi_error(enum iscsi_error_types err_code) 1547ace7f46bSManish Rangankar { 1548ace7f46bSManish Rangankar int i; 1549ace7f46bSManish Rangankar char *msg = NULL; 1550ace7f46bSManish Rangankar 1551ace7f46bSManish Rangankar for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) { 1552ace7f46bSManish Rangankar if (qedi_iscsi_error[i].error_code == err_code) { 1553ace7f46bSManish Rangankar msg = qedi_iscsi_error[i].err_string; 1554ace7f46bSManish Rangankar break; 1555ace7f46bSManish Rangankar } 1556ace7f46bSManish Rangankar } 1557ace7f46bSManish Rangankar return msg; 1558ace7f46bSManish Rangankar } 1559ace7f46bSManish Rangankar 1560ace7f46bSManish Rangankar void qedi_process_iscsi_error(struct qedi_endpoint *ep, struct async_data *data) 1561ace7f46bSManish Rangankar { 1562ace7f46bSManish Rangankar struct qedi_conn *qedi_conn; 1563ace7f46bSManish Rangankar struct qedi_ctx *qedi; 1564ace7f46bSManish Rangankar char warn_notice[] = "iscsi_warning"; 1565ace7f46bSManish Rangankar char error_notice[] = "iscsi_error"; 1566ace7f46bSManish Rangankar char unknown_msg[] = "Unknown error"; 1567ace7f46bSManish Rangankar char *message; 1568ace7f46bSManish Rangankar int need_recovery = 0; 1569ace7f46bSManish Rangankar u32 err_mask = 0; 1570ace7f46bSManish Rangankar char *msg; 1571ace7f46bSManish Rangankar 1572ace7f46bSManish Rangankar if (!ep) 1573ace7f46bSManish Rangankar return; 1574ace7f46bSManish Rangankar 1575ace7f46bSManish Rangankar qedi_conn = ep->conn; 1576ace7f46bSManish Rangankar if (!qedi_conn) 1577ace7f46bSManish Rangankar return; 1578ace7f46bSManish Rangankar 1579ace7f46bSManish Rangankar qedi = ep->qedi; 1580ace7f46bSManish Rangankar 1581ace7f46bSManish Rangankar QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n", 1582ace7f46bSManish Rangankar data->error_code); 1583ace7f46bSManish Rangankar 1584ace7f46bSManish Rangankar if (err_mask) { 1585ace7f46bSManish Rangankar need_recovery = 0; 1586ace7f46bSManish Rangankar message = warn_notice; 1587ace7f46bSManish Rangankar } else { 1588ace7f46bSManish Rangankar need_recovery = 1; 1589ace7f46bSManish Rangankar message = error_notice; 1590ace7f46bSManish Rangankar } 1591ace7f46bSManish Rangankar 1592ace7f46bSManish Rangankar msg = qedi_get_iscsi_error(data->error_code); 1593ace7f46bSManish Rangankar if (!msg) { 1594ace7f46bSManish Rangankar need_recovery = 0; 1595ace7f46bSManish Rangankar msg = unknown_msg; 1596ace7f46bSManish Rangankar } 1597ace7f46bSManish Rangankar 1598ace7f46bSManish Rangankar iscsi_conn_printk(KERN_ALERT, 1599ace7f46bSManish Rangankar qedi_conn->cls_conn->dd_data, 1600ace7f46bSManish Rangankar "qedi: %s - %s\n", message, msg); 1601ace7f46bSManish Rangankar 1602ace7f46bSManish Rangankar if (need_recovery) 1603ace7f46bSManish Rangankar qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); 1604ace7f46bSManish Rangankar } 1605ace7f46bSManish Rangankar 1606ace7f46bSManish Rangankar void qedi_process_tcp_error(struct qedi_endpoint *ep, struct async_data *data) 1607ace7f46bSManish Rangankar { 1608ace7f46bSManish Rangankar struct qedi_conn *qedi_conn; 1609ace7f46bSManish Rangankar 1610ace7f46bSManish Rangankar if (!ep) 1611ace7f46bSManish Rangankar return; 1612ace7f46bSManish Rangankar 1613ace7f46bSManish Rangankar qedi_conn = ep->conn; 1614ace7f46bSManish Rangankar if (!qedi_conn) 1615ace7f46bSManish Rangankar return; 1616ace7f46bSManish Rangankar 1617ace7f46bSManish Rangankar QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n", 1618ace7f46bSManish Rangankar data->error_code); 1619ace7f46bSManish Rangankar 1620ace7f46bSManish Rangankar qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); 1621ace7f46bSManish Rangankar } 1622