diff options
Diffstat (limited to 'drivers/scsi/elx/efct/efct_lio.c')
| -rw-r--r-- | drivers/scsi/elx/efct/efct_lio.c | 1695 |
1 files changed, 1695 insertions, 0 deletions
diff --git a/drivers/scsi/elx/efct/efct_lio.c b/drivers/scsi/elx/efct/efct_lio.c new file mode 100644 index 000000000..be4b5c1ee --- /dev/null +++ b/drivers/scsi/elx/efct/efct_lio.c @@ -0,0 +1,1695 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +#include <target/target_core_base.h> +#include <target/target_core_fabric.h> +#include "efct_driver.h" +#include "efct_lio.h" + +/* + * lio_wq is used to call the LIO backed during creation or deletion of + * sessions. This brings serialization to the session management as we create + * single threaded work queue. + */ +static struct workqueue_struct *lio_wq; + +static int +efct_format_wwn(char *str, size_t len, const char *pre, u64 wwn) +{ + u8 a[8]; + + put_unaligned_be64(wwn, a); + return snprintf(str, len, "%s%8phC", pre, a); +} + +static int +efct_lio_parse_wwn(const char *name, u64 *wwp, u8 npiv) +{ + int num; + u8 b[8]; + + if (npiv) { + num = sscanf(name, + "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx", + &b[0], &b[1], &b[2], &b[3], &b[4], &b[5], &b[6], + &b[7]); + } else { + num = sscanf(name, + "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", + &b[0], &b[1], &b[2], &b[3], &b[4], &b[5], &b[6], + &b[7]); + } + + if (num != 8) + return -EINVAL; + + *wwp = get_unaligned_be64(b); + return 0; +} + +static int +efct_lio_parse_npiv_wwn(const char *name, size_t size, u64 *wwpn, u64 *wwnn) +{ + unsigned int cnt = size; + int rc; + + *wwpn = *wwnn = 0; + if (name[cnt - 1] == '\n' || name[cnt - 1] == 0) + cnt--; + + /* validate we have enough characters for WWPN */ + if ((cnt != (16 + 1 + 16)) || (name[16] != ':')) + return -EINVAL; + + rc = efct_lio_parse_wwn(&name[0], wwpn, 1); + if (rc) + return rc; + + rc = efct_lio_parse_wwn(&name[17], wwnn, 1); + if (rc) + return rc; + + return 0; +} + +static ssize_t +efct_lio_tpg_enable_show(struct config_item *item, char *page) +{ + struct se_portal_group *se_tpg = to_tpg(item); + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return snprintf(page, PAGE_SIZE, "%d\n", tpg->enabled); +} + +static ssize_t +efct_lio_tpg_enable_store(struct config_item *item, const char *page, + size_t count) +{ + struct se_portal_group *se_tpg = to_tpg(item); + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + struct efct *efct; + struct efc *efc; + unsigned long op; + + if (!tpg->nport || !tpg->nport->efct) { + pr_err("%s: Unable to find EFCT device\n", __func__); + return -EINVAL; + } + + efct = tpg->nport->efct; + efc = efct->efcport; + + if (kstrtoul(page, 0, &op) < 0) + return -EINVAL; + + if (op == 1) { + int ret; + + tpg->enabled = true; + efc_log_debug(efct, "enable portal group %d\n", tpg->tpgt); + + ret = efct_xport_control(efct->xport, EFCT_XPORT_PORT_ONLINE); + if (ret) { + efct->tgt_efct.lio_nport = NULL; + efc_log_debug(efct, "cannot bring port online\n"); + return ret; + } + } else if (op == 0) { + efc_log_debug(efct, "disable portal group %d\n", tpg->tpgt); + + if (efc->domain && efc->domain->nport) + efct_scsi_tgt_del_nport(efc, efc->domain->nport); + + tpg->enabled = false; + } else { + return -EINVAL; + } + + return count; +} + +static ssize_t +efct_lio_npiv_tpg_enable_show(struct config_item *item, char *page) +{ + struct se_portal_group *se_tpg = to_tpg(item); + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return snprintf(page, PAGE_SIZE, "%d\n", tpg->enabled); +} + +static ssize_t +efct_lio_npiv_tpg_enable_store(struct config_item *item, const char *page, + size_t count) +{ + struct se_portal_group *se_tpg = to_tpg(item); + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + struct efct_lio_vport *lio_vport = tpg->vport; + struct efct *efct; + struct efc *efc; + unsigned long op; + + if (kstrtoul(page, 0, &op) < 0) + return -EINVAL; + + if (!lio_vport) { + pr_err("Unable to find vport\n"); + return -EINVAL; + } + + efct = lio_vport->efct; + efc = efct->efcport; + + if (op == 1) { + tpg->enabled = true; + efc_log_debug(efct, "enable portal group %d\n", tpg->tpgt); + + if (efc->domain) { + int ret; + + ret = efc_nport_vport_new(efc->domain, + lio_vport->npiv_wwpn, + lio_vport->npiv_wwnn, + U32_MAX, false, true, + NULL, NULL); + if (ret != 0) { + efc_log_err(efct, "Failed to create Vport\n"); + return ret; + } + return count; + } + + if (!(efc_vport_create_spec(efc, lio_vport->npiv_wwnn, + lio_vport->npiv_wwpn, U32_MAX, + false, true, NULL, NULL))) + return -ENOMEM; + + } else if (op == 0) { + efc_log_debug(efct, "disable portal group %d\n", tpg->tpgt); + + tpg->enabled = false; + /* only physical nport should exist, free lio_nport + * allocated in efct_lio_make_nport + */ + if (efc->domain) { + efc_nport_vport_del(efct->efcport, efc->domain, + lio_vport->npiv_wwpn, + lio_vport->npiv_wwnn); + return count; + } + } else { + return -EINVAL; + } + return count; +} + +static char *efct_lio_get_fabric_wwn(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->nport->wwpn_str; +} + +static char *efct_lio_get_npiv_fabric_wwn(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->vport->wwpn_str; +} + +static u16 efct_lio_get_tag(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpgt; +} + +static u16 efct_lio_get_npiv_tag(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpgt; +} + +static int efct_lio_check_demo_mode(struct se_portal_group *se_tpg) +{ + return 1; +} + +static int efct_lio_check_demo_mode_cache(struct se_portal_group *se_tpg) +{ + return 1; +} + +static int efct_lio_check_demo_write_protect(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.demo_mode_write_protect; +} + +static int +efct_lio_npiv_check_demo_write_protect(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.demo_mode_write_protect; +} + +static int efct_lio_check_prod_write_protect(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.prod_mode_write_protect; +} + +static int +efct_lio_npiv_check_prod_write_protect(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.prod_mode_write_protect; +} + +static u32 efct_lio_tpg_get_inst_index(struct se_portal_group *se_tpg) +{ + return 1; +} + +static int efct_lio_check_stop_free(struct se_cmd *se_cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(se_cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_CHK_STOP_FREE); + return target_put_sess_cmd(se_cmd); +} + +static int +efct_lio_abort_tgt_cb(struct efct_io *io, + enum efct_scsi_io_status scsi_status, + u32 flags, void *arg) +{ + efct_lio_io_printf(io, "Abort done, status:%d\n", scsi_status); + return 0; +} + +static void +efct_lio_aborted_task(struct se_cmd *se_cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(se_cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_ABORTED_TASK); + + if (ocp->rsp_sent) + return; + + /* command has been aborted, cleanup here */ + ocp->aborting = true; + ocp->err = EFCT_SCSI_STATUS_ABORTED; + /* terminate the exchange */ + efct_scsi_tgt_abort_io(io, efct_lio_abort_tgt_cb, NULL); +} + +static void efct_lio_release_cmd(struct se_cmd *se_cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(se_cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + struct efct *efct = io->efct; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_RELEASE_CMD); + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_CMPL_CMD); + efct_scsi_io_complete(io); + atomic_sub_return(1, &efct->tgt_efct.ios_in_use); +} + +static void efct_lio_close_session(struct se_session *se_sess) +{ + struct efc_node *node = se_sess->fabric_sess_ptr; + + pr_debug("se_sess=%p node=%p", se_sess, node); + + if (!node) { + pr_debug("node is NULL"); + return; + } + + efc_node_post_shutdown(node, NULL); +} + +static u32 efct_lio_sess_get_index(struct se_session *se_sess) +{ + return 0; +} + +static void efct_lio_set_default_node_attrs(struct se_node_acl *nacl) +{ +} + +static int efct_lio_get_cmd_state(struct se_cmd *cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + + return io->tgt_io.state; +} + +static int +efct_lio_sg_map(struct efct_io *io) +{ + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + struct se_cmd *cmd = &ocp->cmd; + + ocp->seg_map_cnt = dma_map_sg(&io->efct->pci->dev, cmd->t_data_sg, + cmd->t_data_nents, cmd->data_direction); + if (ocp->seg_map_cnt == 0) + return -EFAULT; + return 0; +} + +static void +efct_lio_sg_unmap(struct efct_io *io) +{ + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + struct se_cmd *cmd = &ocp->cmd; + + if (WARN_ON(!ocp->seg_map_cnt || !cmd->t_data_sg)) + return; + + dma_unmap_sg(&io->efct->pci->dev, cmd->t_data_sg, + ocp->seg_map_cnt, cmd->data_direction); + ocp->seg_map_cnt = 0; +} + +static int +efct_lio_status_done(struct efct_io *io, + enum efct_scsi_io_status scsi_status, + u32 flags, void *arg) +{ + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_RSP_DONE); + if (scsi_status != EFCT_SCSI_STATUS_GOOD) { + efct_lio_io_printf(io, "callback completed with error=%d\n", + scsi_status); + ocp->err = scsi_status; + } + if (ocp->seg_map_cnt) + efct_lio_sg_unmap(io); + + efct_lio_io_printf(io, "status=%d, err=%d flags=0x%x, dir=%d\n", + scsi_status, ocp->err, flags, ocp->ddir); + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE); + transport_generic_free_cmd(&io->tgt_io.cmd, 0); + return 0; +} + +static int +efct_lio_datamove_done(struct efct_io *io, enum efct_scsi_io_status scsi_status, + u32 flags, void *arg); + +static int +efct_lio_write_pending(struct se_cmd *cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + struct efct_scsi_sgl *sgl = io->sgl; + struct scatterlist *sg; + u32 flags = 0, cnt, curcnt; + u64 length = 0; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_WRITE_PENDING); + efct_lio_io_printf(io, "trans_state=0x%x se_cmd_flags=0x%x\n", + cmd->transport_state, cmd->se_cmd_flags); + + if (ocp->seg_cnt == 0) { + ocp->seg_cnt = cmd->t_data_nents; + ocp->cur_seg = 0; + if (efct_lio_sg_map(io)) { + efct_lio_io_printf(io, "efct_lio_sg_map failed\n"); + return -EFAULT; + } + } + curcnt = (ocp->seg_map_cnt - ocp->cur_seg); + curcnt = (curcnt < io->sgl_allocated) ? curcnt : io->sgl_allocated; + /* find current sg */ + for (cnt = 0, sg = cmd->t_data_sg; cnt < ocp->cur_seg; cnt++, + sg = sg_next(sg)) + ;/* do nothing */ + + for (cnt = 0; cnt < curcnt; cnt++, sg = sg_next(sg)) { + sgl[cnt].addr = sg_dma_address(sg); + sgl[cnt].dif_addr = 0; + sgl[cnt].len = sg_dma_len(sg); + length += sgl[cnt].len; + ocp->cur_seg++; + } + + if (ocp->cur_seg == ocp->seg_cnt) + flags = EFCT_SCSI_LAST_DATAPHASE; + + return efct_scsi_recv_wr_data(io, flags, sgl, curcnt, length, + efct_lio_datamove_done, NULL); +} + +static int +efct_lio_queue_data_in(struct se_cmd *cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + struct efct_scsi_sgl *sgl = io->sgl; + struct scatterlist *sg = NULL; + uint flags = 0, cnt = 0, curcnt = 0; + u64 length = 0; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_QUEUE_DATA_IN); + + if (ocp->seg_cnt == 0) { + if (cmd->data_length) { + ocp->seg_cnt = cmd->t_data_nents; + ocp->cur_seg = 0; + if (efct_lio_sg_map(io)) { + efct_lio_io_printf(io, + "efct_lio_sg_map failed\n"); + return -EAGAIN; + } + } else { + /* If command length is 0, send the response status */ + struct efct_scsi_cmd_resp rsp; + + memset(&rsp, 0, sizeof(rsp)); + efct_lio_io_printf(io, + "cmd : %p length 0, send status\n", + cmd); + return efct_scsi_send_resp(io, 0, &rsp, + efct_lio_status_done, NULL); + } + } + curcnt = min(ocp->seg_map_cnt - ocp->cur_seg, io->sgl_allocated); + + while (cnt < curcnt) { + sg = &cmd->t_data_sg[ocp->cur_seg]; + sgl[cnt].addr = sg_dma_address(sg); + sgl[cnt].dif_addr = 0; + if (ocp->transferred_len + sg_dma_len(sg) >= cmd->data_length) + sgl[cnt].len = cmd->data_length - ocp->transferred_len; + else + sgl[cnt].len = sg_dma_len(sg); + + ocp->transferred_len += sgl[cnt].len; + length += sgl[cnt].len; + ocp->cur_seg++; + cnt++; + if (ocp->transferred_len == cmd->data_length) + break; + } + + if (ocp->transferred_len == cmd->data_length) { + flags = EFCT_SCSI_LAST_DATAPHASE; + ocp->seg_cnt = ocp->cur_seg; + } + + /* If there is residual, disable Auto Good Response */ + if (cmd->residual_count) + flags |= EFCT_SCSI_NO_AUTO_RESPONSE; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RD_DATA); + + return efct_scsi_send_rd_data(io, flags, sgl, curcnt, length, + efct_lio_datamove_done, NULL); +} + +static void +efct_lio_send_resp(struct efct_io *io, enum efct_scsi_io_status scsi_status, + u32 flags) +{ + struct efct_scsi_cmd_resp rsp; + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + struct se_cmd *cmd = &io->tgt_io.cmd; + int rc; + + if (flags & EFCT_SCSI_IO_CMPL_RSP_SENT) { + ocp->rsp_sent = true; + efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE); + transport_generic_free_cmd(&io->tgt_io.cmd, 0); + return; + } + + /* send check condition if an error occurred */ + memset(&rsp, 0, sizeof(rsp)); + rsp.scsi_status = cmd->scsi_status; + rsp.sense_data = (uint8_t *)io->tgt_io.sense_buffer; + rsp.sense_data_length = cmd->scsi_sense_length; + + /* Check for residual underrun or overrun */ + if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) + rsp.residual = -cmd->residual_count; + else if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) + rsp.residual = cmd->residual_count; + + rc = efct_scsi_send_resp(io, 0, &rsp, efct_lio_status_done, NULL); + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RSP); + if (rc != 0) { + efct_lio_io_printf(io, "Read done, send rsp failed %d\n", rc); + efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE); + transport_generic_free_cmd(&io->tgt_io.cmd, 0); + } else { + ocp->rsp_sent = true; + } +} + +static int +efct_lio_datamove_done(struct efct_io *io, enum efct_scsi_io_status scsi_status, + u32 flags, void *arg) +{ + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_DATA_DONE); + if (scsi_status != EFCT_SCSI_STATUS_GOOD) { + efct_lio_io_printf(io, "callback completed with error=%d\n", + scsi_status); + ocp->err = scsi_status; + } + efct_lio_io_printf(io, "seg_map_cnt=%d\n", ocp->seg_map_cnt); + if (ocp->seg_map_cnt) { + if (ocp->err == EFCT_SCSI_STATUS_GOOD && + ocp->cur_seg < ocp->seg_cnt) { + int rc; + + efct_lio_io_printf(io, "continuing cmd at segm=%d\n", + ocp->cur_seg); + if (ocp->ddir == DMA_TO_DEVICE) + rc = efct_lio_write_pending(&ocp->cmd); + else + rc = efct_lio_queue_data_in(&ocp->cmd); + if (!rc) + return 0; + + ocp->err = EFCT_SCSI_STATUS_ERROR; + efct_lio_io_printf(io, "could not continue command\n"); + } + efct_lio_sg_unmap(io); + } + + if (io->tgt_io.aborting) { + efct_lio_io_printf(io, "IO done aborted\n"); + return 0; + } + + if (ocp->ddir == DMA_TO_DEVICE) { + efct_lio_io_printf(io, "Write done, trans_state=0x%x\n", + io->tgt_io.cmd.transport_state); + if (scsi_status != EFCT_SCSI_STATUS_GOOD) { + transport_generic_request_failure(&io->tgt_io.cmd, + TCM_CHECK_CONDITION_ABORT_CMD); + efct_set_lio_io_state(io, + EFCT_LIO_STATE_TGT_GENERIC_REQ_FAILURE); + } else { + efct_set_lio_io_state(io, + EFCT_LIO_STATE_TGT_EXECUTE_CMD); + target_execute_cmd(&io->tgt_io.cmd); + } + } else { + efct_lio_send_resp(io, scsi_status, flags); + } + return 0; +} + +static int +efct_lio_tmf_done(struct efct_io *io, enum efct_scsi_io_status scsi_status, + u32 flags, void *arg) +{ + efct_lio_tmfio_printf(io, "cmd=%p status=%d, flags=0x%x\n", + &io->tgt_io.cmd, scsi_status, flags); + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE); + transport_generic_free_cmd(&io->tgt_io.cmd, 0); + return 0; +} + +static int +efct_lio_null_tmf_done(struct efct_io *tmfio, + enum efct_scsi_io_status scsi_status, + u32 flags, void *arg) +{ + efct_lio_tmfio_printf(tmfio, "cmd=%p status=%d, flags=0x%x\n", + &tmfio->tgt_io.cmd, scsi_status, flags); + + /* free struct efct_io only, no active se_cmd */ + efct_scsi_io_complete(tmfio); + return 0; +} + +static int +efct_lio_queue_status(struct se_cmd *cmd) +{ + struct efct_scsi_cmd_resp rsp; + struct efct_scsi_tgt_io *ocp = + container_of(cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *io = container_of(ocp, struct efct_io, tgt_io); + int rc = 0; + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_QUEUE_STATUS); + efct_lio_io_printf(io, + "status=0x%x trans_state=0x%x se_cmd_flags=0x%x sns_len=%d\n", + cmd->scsi_status, cmd->transport_state, cmd->se_cmd_flags, + cmd->scsi_sense_length); + + memset(&rsp, 0, sizeof(rsp)); + rsp.scsi_status = cmd->scsi_status; + rsp.sense_data = (u8 *)io->tgt_io.sense_buffer; + rsp.sense_data_length = cmd->scsi_sense_length; + + /* Check for residual underrun or overrun, mark negitive value for + * underrun to recognize in HW + */ + if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) + rsp.residual = -cmd->residual_count; + else if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) + rsp.residual = cmd->residual_count; + + rc = efct_scsi_send_resp(io, 0, &rsp, efct_lio_status_done, NULL); + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RSP); + if (rc == 0) + ocp->rsp_sent = true; + return rc; +} + +static void efct_lio_queue_tm_rsp(struct se_cmd *cmd) +{ + struct efct_scsi_tgt_io *ocp = + container_of(cmd, struct efct_scsi_tgt_io, cmd); + struct efct_io *tmfio = container_of(ocp, struct efct_io, tgt_io); + struct se_tmr_req *se_tmr = cmd->se_tmr_req; + u8 rspcode; + + efct_lio_tmfio_printf(tmfio, "cmd=%p function=0x%x tmr->response=%d\n", + cmd, se_tmr->function, se_tmr->response); + switch (se_tmr->response) { + case TMR_FUNCTION_COMPLETE: + rspcode = EFCT_SCSI_TMF_FUNCTION_COMPLETE; + break; + case TMR_TASK_DOES_NOT_EXIST: + rspcode = EFCT_SCSI_TMF_FUNCTION_IO_NOT_FOUND; + break; + case TMR_LUN_DOES_NOT_EXIST: + rspcode = EFCT_SCSI_TMF_INCORRECT_LOGICAL_UNIT_NUMBER; + break; + case TMR_FUNCTION_REJECTED: + default: + rspcode = EFCT_SCSI_TMF_FUNCTION_REJECTED; + break; + } + efct_scsi_send_tmf_resp(tmfio, rspcode, NULL, efct_lio_tmf_done, NULL); +} + +static struct efct *efct_find_wwpn(u64 wwpn) +{ + struct efct *efct; + + /* Search for the HBA that has this WWPN */ + list_for_each_entry(efct, &efct_devices, list_entry) { + + if (wwpn == efct_get_wwpn(&efct->hw)) + return efct; + } + + return NULL; +} + +static struct se_wwn * +efct_lio_make_nport(struct target_fabric_configfs *tf, + struct config_group *group, const char *name) +{ + struct efct_lio_nport *lio_nport; + struct efct *efct; + int ret; + u64 wwpn; + + ret = efct_lio_parse_wwn(name, &wwpn, 0); + if (ret) + return ERR_PTR(ret); + + efct = efct_find_wwpn(wwpn); + if (!efct) { + pr_err("cannot find EFCT for base wwpn %s\n", name); + return ERR_PTR(-ENXIO); + } + + lio_nport = kzalloc(sizeof(*lio_nport), GFP_KERNEL); + if (!lio_nport) + return ERR_PTR(-ENOMEM); + + lio_nport->efct = efct; + lio_nport->wwpn = wwpn; + efct_format_wwn(lio_nport->wwpn_str, sizeof(lio_nport->wwpn_str), + "naa.", wwpn); + efct->tgt_efct.lio_nport = lio_nport; + + return &lio_nport->nport_wwn; +} + +static struct se_wwn * +efct_lio_npiv_make_nport(struct target_fabric_configfs *tf, + struct config_group *group, const char *name) +{ + struct efct_lio_vport *lio_vport; + struct efct *efct; + int ret; + u64 p_wwpn, npiv_wwpn, npiv_wwnn; + char *p, *pbuf, tmp[128]; + struct efct_lio_vport_list_t *vport_list; + struct fc_vport *new_fc_vport; + struct fc_vport_identifiers vport_id; + unsigned long flags = 0; + + snprintf(tmp, sizeof(tmp), "%s", name); + pbuf = &tmp[0]; + + p = strsep(&pbuf, "@"); + + if (!p || !pbuf) { + pr_err("Unable to find separator operator(@)\n"); + return ERR_PTR(-EINVAL); + } + + ret = efct_lio_parse_wwn(p, &p_wwpn, 0); + if (ret) + return ERR_PTR(ret); + + ret = efct_lio_parse_npiv_wwn(pbuf, strlen(pbuf), &npiv_wwpn, + &npiv_wwnn); + if (ret) + return ERR_PTR(ret); + + efct = efct_find_wwpn(p_wwpn); + if (!efct) { + pr_err("cannot find EFCT for base wwpn %s\n", name); + return ERR_PTR(-ENXIO); + } + + lio_vport = kzalloc(sizeof(*lio_vport), GFP_KERNEL); + if (!lio_vport) + return ERR_PTR(-ENOMEM); + + lio_vport->efct = efct; + lio_vport->wwpn = p_wwpn; + lio_vport->npiv_wwpn = npiv_wwpn; + lio_vport->npiv_wwnn = npiv_wwnn; + + efct_format_wwn(lio_vport->wwpn_str, sizeof(lio_vport->wwpn_str), + "naa.", npiv_wwpn); + + vport_list = kzalloc(sizeof(*vport_list), GFP_KERNEL); + if (!vport_list) { + kfree(lio_vport); + return ERR_PTR(-ENOMEM); + } + + vport_list->lio_vport = lio_vport; + + memset(&vport_id, 0, sizeof(vport_id)); + vport_id.port_name = npiv_wwpn; + vport_id.node_name = npiv_wwnn; + vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; + vport_id.vport_type = FC_PORTTYPE_NPIV; + vport_id.disable = false; + + new_fc_vport = fc_vport_create(efct->shost, 0, &vport_id); + if (!new_fc_vport) { + efc_log_err(efct, "fc_vport_create failed\n"); + kfree(lio_vport); + kfree(vport_list); + return ERR_PTR(-ENOMEM); + } + + lio_vport->fc_vport = new_fc_vport; + spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags); + INIT_LIST_HEAD(&vport_list->list_entry); + list_add_tail(&vport_list->list_entry, &efct->tgt_efct.vport_list); + spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags); + + return &lio_vport->vport_wwn; +} + +static void +efct_lio_drop_nport(struct se_wwn *wwn) +{ + struct efct_lio_nport *lio_nport = + container_of(wwn, struct efct_lio_nport, nport_wwn); + struct efct *efct = lio_nport->efct; + + /* only physical nport should exist, free lio_nport allocated + * in efct_lio_make_nport. + */ + kfree(efct->tgt_efct.lio_nport); + efct->tgt_efct.lio_nport = NULL; +} + +static void +efct_lio_npiv_drop_nport(struct se_wwn *wwn) +{ + struct efct_lio_vport *lio_vport = + container_of(wwn, struct efct_lio_vport, vport_wwn); + struct efct_lio_vport_list_t *vport, *next_vport; + struct efct *efct = lio_vport->efct; + unsigned long flags = 0; + + if (lio_vport->fc_vport) + fc_vport_terminate(lio_vport->fc_vport); + + spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags); + + list_for_each_entry_safe(vport, next_vport, &efct->tgt_efct.vport_list, + list_entry) { + if (vport->lio_vport == lio_vport) { + list_del(&vport->list_entry); + kfree(vport->lio_vport); + kfree(vport); + break; + } + } + spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags); +} + +static struct se_portal_group * +efct_lio_make_tpg(struct se_wwn *wwn, const char *name) +{ + struct efct_lio_nport *lio_nport = + container_of(wwn, struct efct_lio_nport, nport_wwn); + struct efct_lio_tpg *tpg; + struct efct *efct; + unsigned long n; + int ret; + + if (strstr(name, "tpgt_") != name) + return ERR_PTR(-EINVAL); + if (kstrtoul(name + 5, 10, &n) || n > USHRT_MAX) + return ERR_PTR(-EINVAL); + + tpg = kzalloc(sizeof(*tpg), GFP_KERNEL); + if (!tpg) + return ERR_PTR(-ENOMEM); + + tpg->nport = lio_nport; + tpg->tpgt = n; + tpg->enabled = false; + + tpg->tpg_attrib.generate_node_acls = 1; + tpg->tpg_attrib.demo_mode_write_protect = 1; + tpg->tpg_attrib.cache_dynamic_acls = 1; + tpg->tpg_attrib.demo_mode_login_only = 1; + tpg->tpg_attrib.session_deletion_wait = 1; + + ret = core_tpg_register(wwn, &tpg->tpg, SCSI_PROTOCOL_FCP); + if (ret < 0) { + kfree(tpg); + return NULL; + } + efct = lio_nport->efct; + efct->tgt_efct.tpg = tpg; + efc_log_debug(efct, "create portal group %d\n", tpg->tpgt); + + xa_init(&efct->lookup); + return &tpg->tpg; +} + +static void +efct_lio_drop_tpg(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + struct efct *efct = tpg->nport->efct; + + efc_log_debug(efct, "drop portal group %d\n", tpg->tpgt); + tpg->nport->efct->tgt_efct.tpg = NULL; + core_tpg_deregister(se_tpg); + xa_destroy(&efct->lookup); + kfree(tpg); +} + +static struct se_portal_group * +efct_lio_npiv_make_tpg(struct se_wwn *wwn, const char *name) +{ + struct efct_lio_vport *lio_vport = + container_of(wwn, struct efct_lio_vport, vport_wwn); + struct efct_lio_tpg *tpg; + struct efct *efct; + unsigned long n; + int ret; + + efct = lio_vport->efct; + if (strstr(name, "tpgt_") != name) + return ERR_PTR(-EINVAL); + if (kstrtoul(name + 5, 10, &n) || n > USHRT_MAX) + return ERR_PTR(-EINVAL); + + if (n != 1) { + efc_log_err(efct, "Invalid tpgt index: %ld provided\n", n); + return ERR_PTR(-EINVAL); + } + + tpg = kzalloc(sizeof(*tpg), GFP_KERNEL); + if (!tpg) + return ERR_PTR(-ENOMEM); + + tpg->vport = lio_vport; + tpg->tpgt = n; + tpg->enabled = false; + + tpg->tpg_attrib.generate_node_acls = 1; + tpg->tpg_attrib.demo_mode_write_protect = 1; + tpg->tpg_attrib.cache_dynamic_acls = 1; + tpg->tpg_attrib.demo_mode_login_only = 1; + tpg->tpg_attrib.session_deletion_wait = 1; + + ret = core_tpg_register(wwn, &tpg->tpg, SCSI_PROTOCOL_FCP); + + if (ret < 0) { + kfree(tpg); + return NULL; + } + lio_vport->tpg = tpg; + efc_log_debug(efct, "create vport portal group %d\n", tpg->tpgt); + + return &tpg->tpg; +} + +static void +efct_lio_npiv_drop_tpg(struct se_portal_group *se_tpg) +{ + struct efct_lio_tpg *tpg = + container_of(se_tpg, struct efct_lio_tpg, tpg); + + efc_log_debug(tpg->vport->efct, "drop npiv portal group %d\n", + tpg->tpgt); + core_tpg_deregister(se_tpg); + kfree(tpg); +} + +static int +efct_lio_init_nodeacl(struct se_node_acl *se_nacl, const char *name) +{ + struct efct_lio_nacl *nacl; + u64 wwnn; + + if (efct_lio_parse_wwn(name, &wwnn, 0) < 0) + return -EINVAL; + + nacl = container_of(se_nacl, struct efct_lio_nacl, se_node_acl); + nacl->nport_wwnn = wwnn; + + efct_format_wwn(nacl->nport_name, sizeof(nacl->nport_name), "", wwnn); + return 0; +} + +static int efct_lio_check_demo_mode_login_only(struct se_portal_group *stpg) +{ + struct efct_lio_tpg *tpg = container_of(stpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.demo_mode_login_only; +} + +static int +efct_lio_npiv_check_demo_mode_login_only(struct se_portal_group *stpg) +{ + struct efct_lio_tpg *tpg = container_of(stpg, struct efct_lio_tpg, tpg); + + return tpg->tpg_attrib.demo_mode_login_only; +} + +static struct efct_lio_tpg * +efct_get_vport_tpg(struct efc_node *node) +{ + struct efct *efct; + u64 wwpn = node->nport->wwpn; + struct efct_lio_vport_list_t *vport, *next; + struct efct_lio_vport *lio_vport = NULL; + struct efct_lio_tpg *tpg = NULL; + unsigned long flags = 0; + + efct = node->efc->base; + spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags); + list_for_each_entry_safe(vport, next, &efct->tgt_efct.vport_list, + list_entry) { + lio_vport = vport->lio_vport; + if (wwpn && lio_vport && lio_vport->npiv_wwpn == wwpn) { + efc_log_debug(efct, "found tpg on vport\n"); + tpg = lio_vport->tpg; + break; + } + } + spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags); + return tpg; +} + +static void +_efct_tgt_node_free(struct kref *arg) +{ + struct efct_node *tgt_node = container_of(arg, struct efct_node, ref); + struct efc_node *node = tgt_node->node; + + efc_scsi_del_initiator_complete(node->efc, node); + kfree(tgt_node); +} + +static int efct_session_cb(struct se_portal_group *se_tpg, + struct se_session *se_sess, void *private) +{ + struct efc_node *node = private; + struct efct_node *tgt_node; + struct efct *efct = node->efc->base; + + tgt_node = kzalloc(sizeof(*tgt_node), GFP_KERNEL); + if (!tgt_node) + return -ENOMEM; + + kref_init(&tgt_node->ref); + tgt_node->release = _efct_tgt_node_free; + + tgt_node->session = se_sess; + node->tgt_node = tgt_node; + tgt_node->efct = efct; + + tgt_node->node = node; + + tgt_node->node_fc_id = node->rnode.fc_id; + tgt_node->port_fc_id = node->nport->fc_id; + tgt_node->vpi = node->nport->indicator; + tgt_node->rpi = node->rnode.indicator; + + spin_lock_init(&tgt_node->active_ios_lock); + INIT_LIST_HEAD(&tgt_node->active_ios); + + return 0; +} + +int efct_scsi_tgt_new_device(struct efct *efct) +{ + u32 total_ios; + + /* Get the max settings */ + efct->tgt_efct.max_sge = sli_get_max_sge(&efct->hw.sli); + efct->tgt_efct.max_sgl = sli_get_max_sgl(&efct->hw.sli); + + /* initialize IO watermark fields */ + atomic_set(&efct->tgt_efct.ios_in_use, 0); + total_ios = efct->hw.config.n_io; + efc_log_debug(efct, "total_ios=%d\n", total_ios); + efct->tgt_efct.watermark_min = + (total_ios * EFCT_WATERMARK_LOW_PCT) / 100; + efct->tgt_efct.watermark_max = + (total_ios * EFCT_WATERMARK_HIGH_PCT) / 100; + atomic_set(&efct->tgt_efct.io_high_watermark, + efct->tgt_efct.watermark_max); + atomic_set(&efct->tgt_efct.watermark_hit, 0); + atomic_set(&efct->tgt_efct.initiator_count, 0); + + lio_wq = create_singlethread_workqueue("efct_lio_worker"); + if (!lio_wq) { + efc_log_err(efct, "workqueue create failed\n"); + return -EIO; + } + + spin_lock_init(&efct->tgt_efct.efct_lio_lock); + INIT_LIST_HEAD(&efct->tgt_efct.vport_list); + + return 0; +} + +int efct_scsi_tgt_del_device(struct efct *efct) +{ + flush_workqueue(lio_wq); + + return 0; +} + +int +efct_scsi_tgt_new_nport(struct efc *efc, struct efc_nport *nport) +{ + struct efct *efct = nport->efc->base; + + efc_log_debug(efct, "New SPORT: %s bound to %s\n", nport->display_name, + efct->tgt_efct.lio_nport->wwpn_str); + + return 0; +} + +void +efct_scsi_tgt_del_nport(struct efc *efc, struct efc_nport *nport) +{ + efc_log_debug(efc, "Del SPORT: %s\n", nport->display_name); +} + +static void efct_lio_setup_session(struct work_struct *work) +{ + struct efct_lio_wq_data *wq_data = + container_of(work, struct efct_lio_wq_data, work); + struct efct *efct = wq_data->efct; + struct efc_node *node = wq_data->ptr; + char wwpn[WWN_NAME_LEN]; + struct efct_lio_tpg *tpg; + struct efct_node *tgt_node; + struct se_portal_group *se_tpg; + struct se_session *se_sess; + int watermark; + int ini_count; + u64 id; + + /* Check to see if it's belongs to vport, + * if not get physical port + */ + tpg = efct_get_vport_tpg(node); + if (tpg) { + se_tpg = &tpg->tpg; + } else if (efct->tgt_efct.tpg) { + tpg = efct->tgt_efct.tpg; + se_tpg = &tpg->tpg; + } else { + efc_log_err(efct, "failed to init session\n"); + return; + } + + /* + * Format the FCP Initiator port_name into colon + * separated values to match the format by our explicit + * ConfigFS NodeACLs. + */ + efct_format_wwn(wwpn, sizeof(wwpn), "", efc_node_get_wwpn(node)); + + se_sess = target_setup_session(se_tpg, 0, 0, TARGET_PROT_NORMAL, wwpn, + node, efct_session_cb); + if (IS_ERR(se_sess)) { + efc_log_err(efct, "failed to setup session\n"); + kfree(wq_data); + efc_scsi_sess_reg_complete(node, -EIO); + return; + } + + tgt_node = node->tgt_node; + id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id; + + efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n", + se_sess, node, id); + + if (xa_err(xa_store(&efct->lookup, id, tgt_node, GFP_KERNEL))) + efc_log_err(efct, "Node lookup store failed\n"); + + efc_scsi_sess_reg_complete(node, 0); + + /* update IO watermark: increment initiator count */ + ini_count = atomic_add_return(1, &efct->tgt_efct.initiator_count); + watermark = efct->tgt_efct.watermark_max - + ini_count * EFCT_IO_WATERMARK_PER_INITIATOR; + watermark = (efct->tgt_efct.watermark_min > watermark) ? + efct->tgt_efct.watermark_min : watermark; + atomic_set(&efct->tgt_efct.io_high_watermark, watermark); + + kfree(wq_data); +} + +int efct_scsi_new_initiator(struct efc *efc, struct efc_node *node) +{ + struct efct *efct = node->efc->base; + struct efct_lio_wq_data *wq_data; + + /* + * Since LIO only supports initiator validation at thread level, + * we are open minded and accept all callers. + */ + wq_data = kzalloc(sizeof(*wq_data), GFP_ATOMIC); + if (!wq_data) + return -ENOMEM; + + wq_data->ptr = node; + wq_data->efct = efct; + INIT_WORK(&wq_data->work, efct_lio_setup_session); + queue_work(lio_wq, &wq_data->work); + return EFC_SCSI_CALL_ASYNC; +} + +static void efct_lio_remove_session(struct work_struct *work) +{ + struct efct_lio_wq_data *wq_data = + container_of(work, struct efct_lio_wq_data, work); + struct efct *efct = wq_data->efct; + struct efc_node *node = wq_data->ptr; + struct efct_node *tgt_node; + struct se_session *se_sess; + + tgt_node = node->tgt_node; + if (!tgt_node) { + /* base driver has sent back-to-back requests + * to unreg session with no intervening + * register + */ + efc_log_err(efct, "unreg session for NULL session\n"); + efc_scsi_del_initiator_complete(node->efc, node); + return; + } + + se_sess = tgt_node->session; + efc_log_debug(efct, "unreg session se_sess=%p node=%p\n", + se_sess, node); + + /* first flag all session commands to complete */ + target_stop_session(se_sess); + + /* now wait for session commands to complete */ + target_wait_for_sess_cmds(se_sess); + target_remove_session(se_sess); + tgt_node->session = NULL; + node->tgt_node = NULL; + kref_put(&tgt_node->ref, tgt_node->release); + + kfree(wq_data); +} + +int efct_scsi_del_initiator(struct efc *efc, struct efc_node *node, int reason) +{ + struct efct *efct = node->efc->base; + struct efct_node *tgt_node = node->tgt_node; + struct efct_lio_wq_data *wq_data; + int watermark; + int ini_count; + u64 id; + + if (reason == EFCT_SCSI_INITIATOR_MISSING) + return EFC_SCSI_CALL_COMPLETE; + + if (!tgt_node) { + efc_log_err(efct, "tgt_node is NULL\n"); + return -EIO; + } + + wq_data = kzalloc(sizeof(*wq_data), GFP_ATOMIC); + if (!wq_data) + return -ENOMEM; + + id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id; + xa_erase(&efct->lookup, id); + + wq_data->ptr = node; + wq_data->efct = efct; + INIT_WORK(&wq_data->work, efct_lio_remove_session); + queue_work(lio_wq, &wq_data->work); + + /* + * update IO watermark: decrement initiator count + */ + ini_count = atomic_sub_return(1, &efct->tgt_efct.initiator_count); + + watermark = efct->tgt_efct.watermark_max - + ini_count * EFCT_IO_WATERMARK_PER_INITIATOR; + watermark = (efct->tgt_efct.watermark_min > watermark) ? + efct->tgt_efct.watermark_min : watermark; + atomic_set(&efct->tgt_efct.io_high_watermark, watermark); + + return EFC_SCSI_CALL_ASYNC; +} + +void efct_scsi_recv_cmd(struct efct_io *io, uint64_t lun, u8 *cdb, + u32 cdb_len, u32 flags) +{ + struct efct_scsi_tgt_io *ocp = &io->tgt_io; + struct se_cmd *se_cmd = &io->tgt_io.cmd; + struct efct *efct = io->efct; + char *ddir; + struct efct_node *tgt_node; + struct se_session *se_sess; + int rc = 0; + + memset(ocp, 0, sizeof(struct efct_scsi_tgt_io)); + efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_RECV_CMD); + atomic_add_return(1, &efct->tgt_efct.ios_in_use); + + /* set target timeout */ + io->timeout = efct->target_io_timer_sec; + + if (flags & EFCT_SCSI_CMD_SIMPLE) + ocp->task_attr = TCM_SIMPLE_TAG; + else if (flags & EFCT_SCSI_CMD_HEAD_OF_QUEUE) + ocp->task_attr = TCM_HEAD_TAG; + else if (flags & EFCT_SCSI_CMD_ORDERED) + ocp->task_attr = TCM_ORDERED_TAG; + else if (flags & EFCT_SCSI_CMD_ACA) + ocp->task_attr = TCM_ACA_TAG; + + switch (flags & (EFCT_SCSI_CMD_DIR_IN | EFCT_SCSI_CMD_DIR_OUT)) { + case EFCT_SCSI_CMD_DIR_IN: + ddir = "FROM_INITIATOR"; + ocp->ddir = DMA_TO_DEVICE; + break; + case EFCT_SCSI_CMD_DIR_OUT: + ddir = "TO_INITIATOR"; + ocp->ddir = DMA_FROM_DEVICE; + break; + case EFCT_SCSI_CMD_DIR_IN | EFCT_SCSI_CMD_DIR_OUT: + ddir = "BIDIR"; + ocp->ddir = DMA_BIDIRECTIONAL; + break; + default: + ddir = "NONE"; + ocp->ddir = DMA_NONE; + break; + } + + ocp->lun = lun; + efct_lio_io_printf(io, "new cmd=0x%x ddir=%s dl=%u\n", + cdb[0], ddir, io->exp_xfer_len); + + tgt_node = io->node; + se_sess = tgt_node->session; + if (!se_sess) { + efc_log_err(efct, "No session found to submit IO se_cmd: %p\n", + &ocp->cmd); + efct_scsi_io_free(io); + return; + } + + efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_SUBMIT_CMD); + rc = target_init_cmd(se_cmd, se_sess, &io->tgt_io.sense_buffer[0], + ocp->lun, io->exp_xfer_len, ocp->task_attr, + ocp->ddir, TARGET_SCF_ACK_KREF); + if (rc) { + efc_log_err(efct, "failed to init cmd se_cmd: %p\n", se_cmd); + efct_scsi_io_free(io); + return; + } + + if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, + NULL, 0, GFP_ATOMIC)) + return; + + target_submit(se_cmd); +} + +int +efct_scsi_recv_tmf(struct efct_io *tmfio, u32 lun, enum efct_scsi_tmf_cmd cmd, + struct efct_io *io_to_abort, u32 flags) +{ + unsigned char tmr_func; + struct efct *efct = tmfio->efct; + struct efct_scsi_tgt_io *ocp = &tmfio->tgt_io; + struct efct_node *tgt_node; + struct se_session *se_sess; + int rc; + + memset(ocp, 0, sizeof(struct efct_scsi_tgt_io)); + efct_set_lio_io_state(tmfio, EFCT_LIO_STATE_SCSI_RECV_TMF); + atomic_add_return(1, &efct->tgt_efct.ios_in_use); + efct_lio_tmfio_printf(tmfio, "%s: new tmf %x lun=%u\n", + tmfio->display_name, cmd, lun); + + switch (cmd) { + case EFCT_SCSI_TMF_ABORT_TASK: + tmr_func = TMR_ABORT_TASK; + break; + case EFCT_SCSI_TMF_ABORT_TASK_SET: + tmr_func = TMR_ABORT_TASK_SET; + break; + case EFCT_SCSI_TMF_CLEAR_TASK_SET: + tmr_func = TMR_CLEAR_TASK_SET; + break; + case EFCT_SCSI_TMF_LOGICAL_UNIT_RESET: + tmr_func = TMR_LUN_RESET; + break; + case EFCT_SCSI_TMF_CLEAR_ACA: + tmr_func = TMR_CLEAR_ACA; + break; + case EFCT_SCSI_TMF_TARGET_RESET: + tmr_func = TMR_TARGET_WARM_RESET; + break; + case EFCT_SCSI_TMF_QUERY_ASYNCHRONOUS_EVENT: + case EFCT_SCSI_TMF_QUERY_TASK_SET: + default: + goto tmf_fail; + } + + tmfio->tgt_io.tmf = tmr_func; + tmfio->tgt_io.lun = lun; + tmfio->tgt_io.io_to_abort = io_to_abort; + + tgt_node = tmfio->node; + + se_sess = tgt_node->session; + if (!se_sess) + return 0; + + rc = target_submit_tmr(&ocp->cmd, se_sess, NULL, lun, ocp, tmr_func, + GFP_ATOMIC, tmfio->init_task_tag, TARGET_SCF_ACK_KREF); + + efct_set_lio_io_state(tmfio, EFCT_LIO_STATE_TGT_SUBMIT_TMR); + if (rc) + goto tmf_fail; + + return 0; + +tmf_fail: + efct_scsi_send_tmf_resp(tmfio, EFCT_SCSI_TMF_FUNCTION_REJECTED, + NULL, efct_lio_null_tmf_done, NULL); + return 0; +} + +/* Start items for efct_lio_tpg_attrib_cit */ + +#define DEF_EFCT_TPG_ATTRIB(name) \ + \ +static ssize_t efct_lio_tpg_attrib_##name##_show( \ + struct config_item *item, char *page) \ +{ \ + struct se_portal_group *se_tpg = to_tpg(item); \ + struct efct_lio_tpg *tpg = container_of(se_tpg, \ + struct efct_lio_tpg, tpg); \ + \ + return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ +} \ + \ +static ssize_t efct_lio_tpg_attrib_##name##_store( \ + struct config_item *item, const char *page, size_t count) \ +{ \ + struct se_portal_group *se_tpg = to_tpg(item); \ + struct efct_lio_tpg *tpg = container_of(se_tpg, \ + struct efct_lio_tpg, tpg); \ + struct efct_lio_tpg_attrib *a = &tpg->tpg_attrib; \ + unsigned long val; \ + int ret; \ + \ + ret = kstrtoul(page, 0, &val); \ + if (ret < 0) { \ + pr_err("kstrtoul() failed with ret: %d\n", ret); \ + return ret; \ + } \ + \ + if (val != 0 && val != 1) { \ + pr_err("Illegal boolean value %lu\n", val); \ + return -EINVAL; \ + } \ + \ + a->name = val; \ + \ + return count; \ +} \ +CONFIGFS_ATTR(efct_lio_tpg_attrib_, name) + +DEF_EFCT_TPG_ATTRIB(generate_node_acls); +DEF_EFCT_TPG_ATTRIB(cache_dynamic_acls); +DEF_EFCT_TPG_ATTRIB(demo_mode_write_protect); +DEF_EFCT_TPG_ATTRIB(prod_mode_write_protect); +DEF_EFCT_TPG_ATTRIB(demo_mode_login_only); +DEF_EFCT_TPG_ATTRIB(session_deletion_wait); + +static struct configfs_attribute *efct_lio_tpg_attrib_attrs[] = { + &efct_lio_tpg_attrib_attr_generate_node_acls, + &efct_lio_tpg_attrib_attr_cache_dynamic_acls, + &efct_lio_tpg_attrib_attr_demo_mode_write_protect, + &efct_lio_tpg_attrib_attr_prod_mode_write_protect, + &efct_lio_tpg_attrib_attr_demo_mode_login_only, + &efct_lio_tpg_attrib_attr_session_deletion_wait, + NULL, +}; + +#define DEF_EFCT_NPIV_TPG_ATTRIB(name) \ + \ +static ssize_t efct_lio_npiv_tpg_attrib_##name##_show( \ + struct config_item *item, char *page) \ +{ \ + struct se_portal_group *se_tpg = to_tpg(item); \ + struct efct_lio_tpg *tpg = container_of(se_tpg, \ + struct efct_lio_tpg, tpg); \ + \ + return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ +} \ + \ +static ssize_t efct_lio_npiv_tpg_attrib_##name##_store( \ + struct config_item *item, const char *page, size_t count) \ +{ \ + struct se_portal_group *se_tpg = to_tpg(item); \ + struct efct_lio_tpg *tpg = container_of(se_tpg, \ + struct efct_lio_tpg, tpg); \ + struct efct_lio_tpg_attrib *a = &tpg->tpg_attrib; \ + unsigned long val; \ + int ret; \ + \ + ret = kstrtoul(page, 0, &val); \ + if (ret < 0) { \ + pr_err("kstrtoul() failed with ret: %d\n", ret); \ + return ret; \ + } \ + \ + if (val != 0 && val != 1) { \ + pr_err("Illegal boolean value %lu\n", val); \ + return -EINVAL; \ + } \ + \ + a->name = val; \ + \ + return count; \ +} \ +CONFIGFS_ATTR(efct_lio_npiv_tpg_attrib_, name) + +DEF_EFCT_NPIV_TPG_ATTRIB(generate_node_acls); +DEF_EFCT_NPIV_TPG_ATTRIB(cache_dynamic_acls); +DEF_EFCT_NPIV_TPG_ATTRIB(demo_mode_write_protect); +DEF_EFCT_NPIV_TPG_ATTRIB(prod_mode_write_protect); +DEF_EFCT_NPIV_TPG_ATTRIB(demo_mode_login_only); +DEF_EFCT_NPIV_TPG_ATTRIB(session_deletion_wait); + +static struct configfs_attribute *efct_lio_npiv_tpg_attrib_attrs[] = { + &efct_lio_npiv_tpg_attrib_attr_generate_node_acls, + &efct_lio_npiv_tpg_attrib_attr_cache_dynamic_acls, + &efct_lio_npiv_tpg_attrib_attr_demo_mode_write_protect, + &efct_lio_npiv_tpg_attrib_attr_prod_mode_write_protect, + &efct_lio_npiv_tpg_attrib_attr_demo_mode_login_only, + &efct_lio_npiv_tpg_attrib_attr_session_deletion_wait, + NULL, +}; + +CONFIGFS_ATTR(efct_lio_tpg_, enable); +static struct configfs_attribute *efct_lio_tpg_attrs[] = { + &efct_lio_tpg_attr_enable, NULL }; +CONFIGFS_ATTR(efct_lio_npiv_tpg_, enable); +static struct configfs_attribute *efct_lio_npiv_tpg_attrs[] = { + &efct_lio_npiv_tpg_attr_enable, NULL }; + +static const struct target_core_fabric_ops efct_lio_ops = { + .module = THIS_MODULE, + .fabric_name = "efct", + .node_acl_size = sizeof(struct efct_lio_nacl), + .max_data_sg_nents = 65535, + .tpg_get_wwn = efct_lio_get_fabric_wwn, + .tpg_get_tag = efct_lio_get_tag, + .fabric_init_nodeacl = efct_lio_init_nodeacl, + .tpg_check_demo_mode = efct_lio_check_demo_mode, + .tpg_check_demo_mode_cache = efct_lio_check_demo_mode_cache, + .tpg_check_demo_mode_write_protect = efct_lio_check_demo_write_protect, + .tpg_check_prod_mode_write_protect = efct_lio_check_prod_write_protect, + .tpg_get_inst_index = efct_lio_tpg_get_inst_index, + .check_stop_free = efct_lio_check_stop_free, + .aborted_task = efct_lio_aborted_task, + .release_cmd = efct_lio_release_cmd, + .close_session = efct_lio_close_session, + .sess_get_index = efct_lio_sess_get_index, + .write_pending = efct_lio_write_pending, + .set_default_node_attributes = efct_lio_set_default_node_attrs, + .get_cmd_state = efct_lio_get_cmd_state, + .queue_data_in = efct_lio_queue_data_in, + .queue_status = efct_lio_queue_status, + .queue_tm_rsp = efct_lio_queue_tm_rsp, + .fabric_make_wwn = efct_lio_make_nport, + .fabric_drop_wwn = efct_lio_drop_nport, + .fabric_make_tpg = efct_lio_make_tpg, + .fabric_drop_tpg = efct_lio_drop_tpg, + .tpg_check_demo_mode_login_only = efct_lio_check_demo_mode_login_only, + .tpg_check_prot_fabric_only = NULL, + .sess_get_initiator_sid = NULL, + .tfc_tpg_base_attrs = efct_lio_tpg_attrs, + .tfc_tpg_attrib_attrs = efct_lio_tpg_attrib_attrs, +}; + +static const struct target_core_fabric_ops efct_lio_npiv_ops = { + .module = THIS_MODULE, + .fabric_name = "efct_npiv", + .node_acl_size = sizeof(struct efct_lio_nacl), + .max_data_sg_nents = 65535, + .tpg_get_wwn = efct_lio_get_npiv_fabric_wwn, + .tpg_get_tag = efct_lio_get_npiv_tag, + .fabric_init_nodeacl = efct_lio_init_nodeacl, + .tpg_check_demo_mode = efct_lio_check_demo_mode, + .tpg_check_demo_mode_cache = efct_lio_check_demo_mode_cache, + .tpg_check_demo_mode_write_protect = + efct_lio_npiv_check_demo_write_protect, + .tpg_check_prod_mode_write_protect = + efct_lio_npiv_check_prod_write_protect, + .tpg_get_inst_index = efct_lio_tpg_get_inst_index, + .check_stop_free = efct_lio_check_stop_free, + .aborted_task = efct_lio_aborted_task, + .release_cmd = efct_lio_release_cmd, + .close_session = efct_lio_close_session, + .sess_get_index = efct_lio_sess_get_index, + .write_pending = efct_lio_write_pending, + .set_default_node_attributes = efct_lio_set_default_node_attrs, + .get_cmd_state = efct_lio_get_cmd_state, + .queue_data_in = efct_lio_queue_data_in, + .queue_status = efct_lio_queue_status, + .queue_tm_rsp = efct_lio_queue_tm_rsp, + .fabric_make_wwn = efct_lio_npiv_make_nport, + .fabric_drop_wwn = efct_lio_npiv_drop_nport, + .fabric_make_tpg = efct_lio_npiv_make_tpg, + .fabric_drop_tpg = efct_lio_npiv_drop_tpg, + .tpg_check_demo_mode_login_only = + efct_lio_npiv_check_demo_mode_login_only, + .tpg_check_prot_fabric_only = NULL, + .sess_get_initiator_sid = NULL, + .tfc_tpg_base_attrs = efct_lio_npiv_tpg_attrs, + .tfc_tpg_attrib_attrs = efct_lio_npiv_tpg_attrib_attrs, +}; + +int efct_scsi_tgt_driver_init(void) +{ + int rc; + + /* Register the top level struct config_item_type with TCM core */ + rc = target_register_template(&efct_lio_ops); + if (rc < 0) { + pr_err("target_fabric_configfs_register failed with %d\n", rc); + return rc; + } + rc = target_register_template(&efct_lio_npiv_ops); + if (rc < 0) { + pr_err("target_fabric_configfs_register failed with %d\n", rc); + target_unregister_template(&efct_lio_ops); + return rc; + } + return 0; +} + +int efct_scsi_tgt_driver_exit(void) +{ + target_unregister_template(&efct_lio_ops); + target_unregister_template(&efct_lio_npiv_ops); + return 0; +} |