[PATCH v3 24/31] elx: efct: LIO backend interface routines

James Smart
2020-04-12T03:33:57Z

This patch continues the efct driver population.

This patch adds driver definitions for:
LIO backend template registration and template functions.

Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>

---
v3:
Fixed as per the review comments.
Removed vport pend list. Pending list is tracked based on the sport
assigned to vport.
---
drivers/scsi/elx/efct/efct_lio.c | 1840 ++++++++++++++++++++++++++++++++++++++
drivers/scsi/elx/efct/efct_lio.h | 178 ++++
2 files changed, 2018 insertions(+)
create mode 100644 drivers/scsi/elx/efct/efct_lio.c
create mode 100644 drivers/scsi/elx/efct/efct_lio.h

diff --git a/drivers/scsi/elx/efct/efct_lio.c b/drivers/scsi/elx/efct/efct_lio.c
new file mode 100644
index 000000000000..c784ef9dbbee
--- /dev/null
+++ b/drivers/scsi/elx/efct/efct_lio.c
@@ -0,0 +1,1840 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 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"
+
+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 EFC_SUCCESS;
+}
+
+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 EFC_SUCCESS;
+}
+
+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", atomic_read(&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;
+ int ret;
+
+ if (!tpg->sport || !tpg->sport->efct) {
+ pr_err("%s: Unable to find EFCT device\n", __func__);
+ return -EINVAL;
+ }
+
+ efct = tpg->sport->efct;
+ efc = efct->efcport;
+
+ if (kstrtoul(page, 0, &op) < 0)
+ return -EINVAL;
+
+ if (op == 1) {
+ atomic_set(&tpg->enabled, 1);
+ 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_sport = NULL;
+ efc_log_test(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->sport)
+ efct_scsi_tgt_del_sport(efc, efc->domain->sport);
+
+ atomic_set(&tpg->enabled, 0);
+ } 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", atomic_read(&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;
+ int ret;
+ 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) {
+ atomic_set(&tpg->enabled, 1);
+ efc_log_debug(efct, "enable portal group %d\n", tpg->tpgt);
+
+ if (efc->domain) {
+ ret = efc_sport_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);
+
+ atomic_set(&tpg->enabled, 0);
+ /* only physical sport should exist, free lio_sport
+ * allocated in efct_lio_make_sport
+ */
+ if (efc->domain) {
+ efc_sport_vport_del(efct->efcport, efc->domain,
+ lio_vport->npiv_wwpn,
+ lio_vport->npiv_wwnn);
+ return count;
+ }
+ } else {
+ return -EINVAL;
+ }
+ return count;
+}
+
+static bool efct_lio_node_is_initiator(struct efc_node *node)
+{
+ if (!node)
+ return false;
+
+ if (node->rnode.fc_id && node->rnode.fc_id != FC_FID_FLOGI &&
+ node->rnode.fc_id != FC_FID_DIR_SERV &&
+ node->rnode.fc_id != FC_FID_FCTRL) {
+ return true;
+ }
+
+ return false;
+}
+
+static int efct_lio_tgt_session_data(struct efct *efct, u64 wwpn,
+ char *buf, int size)
+{
+ struct efc_sli_port *sport = NULL;
+ struct efc_node *node = NULL;
+ struct efc *efc = efct->efcport;
+ u16 loop_id = 0;
+ int off = 0, rc = 0;
+
+ if (!efc->domain) {
+ efc_log_err(efct, "failed to find efct/domain\n");
+ return EFC_FAIL;
+ }
+
+ list_for_each_entry(sport, &efc->domain->sport_list, list_entry) {
+ if (sport->wwpn != wwpn)
+ continue;
+ list_for_each_entry(node, &sport->node_list,
+ list_entry) {
+ /* Dump only remote NPORT sessions */
+ if (!efct_lio_node_is_initiator(node))
+ continue;
+
+ rc = snprintf(buf + off, size - off,
+ "0x%016llx,0x%08x,0x%04x\n",
+ get_unaligned_be64(node->wwpn),
+ node->rnode.fc_id, loop_id);
+ if (rc < 0)
+ break;
+ off += rc;
+ }
+ }
+
+ return EFC_SUCCESS;
+}
+
+static int efct_debugfs_session_open(struct inode *inode, struct file *filp)
+{
+ struct efct_lio_sport *sport = inode->i_private;
+ int size = 17 * PAGE_SIZE; /* 34 byte per session*2048 sessions */
+
+ if (!(filp->f_mode & FMODE_READ)) {
+ filp->private_data = sport;
+ return EFC_SUCCESS;
+ }
+
+ filp->private_data = kmalloc(size, GFP_KERNEL);
+ if (!filp->private_data)
+ return -ENOMEM;
+
+ memset(filp->private_data, 0, size);
+ efct_lio_tgt_session_data(sport->efct, sport->wwpn, filp->private_data,
+ size);
+ return EFC_SUCCESS;
+}
+
+static int efct_debugfs_session_close(struct inode *inode, struct file *filp)
+{
+ if (filp->f_mode & FMODE_READ)
+ kfree(filp->private_data);
+
+ return EFC_SUCCESS;
+}
+
+static ssize_t efct_debugfs_session_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ if (!(filp->f_mode & FMODE_READ))
+ return -EPERM;
+ return simple_read_from_buffer(buf, count, ppos, filp->private_data,
+ strlen(filp->private_data));
+}
+
+static int efct_npiv_debugfs_session_open(struct inode *inode,
+ struct file *filp)
+{
+ struct efct_lio_vport *sport = inode->i_private;
+ int size = 17 * PAGE_SIZE; /* 34 byte per session*2048 sessions */
+
+ if (!(filp->f_mode & FMODE_READ)) {
+ filp->private_data = sport;
+ return EFC_SUCCESS;
+ }
+
+ filp->private_data = kmalloc(size, GFP_KERNEL);
+ if (!filp->private_data)
+ return -ENOMEM;
+
+ memset(filp->private_data, 0, size);
+ efct_lio_tgt_session_data(sport->efct, sport->npiv_wwpn,
+ filp->private_data, size);
+ return EFC_SUCCESS;
+}
+
+static const struct file_operations efct_debugfs_session_fops = {
+ .owner = THIS_MODULE,
+ .open = efct_debugfs_session_open,
+ .release = efct_debugfs_session_close,
+ .read = efct_debugfs_session_read,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations efct_npiv_debugfs_session_fops = {
+ .owner = THIS_MODULE,
+ .open = efct_npiv_debugfs_session_open,
+ .release = efct_debugfs_session_close,
+ .read = efct_debugfs_session_read,
+ .llseek = default_llseek,
+};
+
+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->sport->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 EFC_SUCCESS;
+}
+
+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, "%s\n", __func__);
+ return EFC_SUCCESS;
+}
+
+/* command has been aborted, cleanup here */
+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 (!(se_cmd->transport_state & CMD_T_ABORTED) || ocp->rsp_sent)
+ return;
+
+ ocp->aborting = true;
+ ocp->err = EFCT_SCSI_STATUS_ABORTED;
+ /* terminate the exchange */
+ efct_scsi_tgt_abort_io(io, efct_lio_abort_tgt_cb, NULL);
+}
+
+/* Called when se_cmd's ref count goes to 0 */
+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_scsi_io_complete(io);
+ atomic_sub_return(1, &efct->tgt_efct.ios_in_use);
+ efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_CMPL_CMD);
+}
+
+static void efct_lio_close_session(struct se_session *se_sess)
+{
+ struct efc_node *node = se_sess->fabric_sess_ptr;
+ struct efct *efct = NULL;
+ int rc;
+
+ pr_debug("se_sess=%p node=%p", se_sess, node);
+
+ if (!node) {
+ pr_debug("node is NULL");
+ return;
+ }
+
+ efct = node->efc->base;
+ rc = efct_xport_control(efct->xport,
+ EFCT_XPORT_POST_NODE_EVENT, node,
+ EFCT_XPORT_SHUTDOWN, NULL);
+ if (rc != 0) {
+ efc_log_test(efct,
+ "Failed to shutdown session %p node %p\n",
+ se_sess, node);
+ return;
+ }
+}
+
+static u32 efct_lio_sess_get_index(struct se_session *se_sess)
+{
+ return EFC_SUCCESS;
+}
+
+static void efct_lio_set_default_node_attrs(struct se_node_acl *nacl)
+{
+}
+
+static int efct_lio_get_cmd_state(struct se_cmd *se_cmd)
+{
+ return EFC_SUCCESS;
+}
+
+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 = pci_map_sg(io->efct->pcidev, cmd->t_data_sg,
+ cmd->t_data_nents, cmd->data_direction);
+ if (ocp->seg_map_cnt == 0)
+ return -EFAULT;
+ return EFC_SUCCESS;
+}
+
+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;
+
+ pci_unmap_sg(io->efct->pcidev, 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);
+
+ transport_generic_free_cmd(&io->tgt_io.cmd, 0);
+ efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
+ return EFC_SUCCESS;
+}
+
+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;
+ int rc = 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))
+ ;
+
+ 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;
+ rc = efct_scsi_recv_wr_data(io, flags, sgl, curcnt, length,
+ efct_lio_datamove_done, NULL);
+ return rc;
+}
+
+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;
+ int rc = 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;
+
+ rc = efct_scsi_send_rd_data(io, flags, sgl, curcnt, length,
+ efct_lio_datamove_done, NULL);
+ efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RD_DATA);
+ return rc;
+}
+
+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;
+ struct se_cmd *cmd = &io->tgt_io.cmd;
+ int rc;
+
+ 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) {
+ 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 == 0)
+ return EFC_SUCCESS;
+ 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 EFC_SUCCESS;
+ }
+
+ 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 {
+ if ((flags & EFCT_SCSI_IO_CMPL_RSP_SENT) == 0) {
+ struct efct_scsi_cmd_resp rsp;
+ /* 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, failed to send rsp, rc=%d\n",
+ rc);
+ transport_generic_free_cmd(&io->tgt_io.cmd, 0);
+ efct_set_lio_io_state(io,
+ EFCT_LIO_STATE_TGT_GENERIC_FREE);
+ } else {
+ ocp->rsp_sent = true;
+ }
+ } else {
+ ocp->rsp_sent = true;
+ transport_generic_free_cmd(&io->tgt_io.cmd, 0);
+ efct_set_lio_io_state(io,
+ EFCT_LIO_STATE_TGT_GENERIC_FREE);
+ }
+ }
+ return EFC_SUCCESS;
+}
+
+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);
+
+ transport_generic_free_cmd(&io->tgt_io.cmd, 0);
+ efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
+ return EFC_SUCCESS;
+}
+
+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 EFC_SUCCESS;
+}
+
+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)
+{
+ int efctidx;
+ struct efct *efct;
+
+ /* Search for the HBA that has this WWPN */
+ for (efctidx = 0; efctidx < MAX_EFCT_DEVICES; efctidx++) {
+
+ efct = efct_devices[efctidx];
+ if (!efct)
+ continue;
+
+ if (wwpn == efct_get_wwpn(&efct->hw))
+ break;
+ }
+
+ if (efctidx == MAX_EFCT_DEVICES)
+ return NULL;
+
+ return efct_devices[efctidx];
+}
+
+static struct dentry *
+efct_create_dfs_session(struct efct *efct, void *data, u8 npiv)
+{
+ char name[16];
+
+ if (!efct->sess_debugfs_dir)
+ return NULL;
+
+ if (!npiv) {
+ snprintf(name, sizeof(name), "efct-sessions-%d",
+ efct->instance_index);
+ return debugfs_create_file(name, 0644, efct->sess_debugfs_dir,
+ data, &efct_debugfs_session_fops);
+ }
+
+ snprintf(name, sizeof(name), "sessions-npiv-%d", efct->instance_index);
+
+ return debugfs_create_file(name, 0644, efct->sess_debugfs_dir, data,
+ &efct_npiv_debugfs_session_fops);
+}
+
+static struct se_wwn *
+efct_lio_make_sport(struct target_fabric_configfs *tf,
+ struct config_group *group, const char *name)
+{
+ struct efct_lio_sport *lio_sport;
+ 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_sport = kzalloc(sizeof(*lio_sport), GFP_KERNEL);
+ if (!lio_sport)
+ return ERR_PTR(-ENOMEM);
+
+ lio_sport->efct = efct;
+ lio_sport->wwpn = wwpn;
+ efct_format_wwn(lio_sport->wwpn_str, sizeof(lio_sport->wwpn_str),
+ "naa.", wwpn);
+ efct->tgt_efct.lio_sport = lio_sport;
+
+ lio_sport->sessions = efct_create_dfs_session(efct, lio_sport, 0);
+ return &lio_sport->sport_wwn;
+}
+
+static struct se_wwn *
+efct_lio_npiv_make_sport(struct target_fabric_configfs *tf,
+ struct config_group *group, const char *name)
+{
+ struct efct_lio_vport *lio_vport;
+ struct efct *efct;
+ int ret = -1;
+ 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 = kmalloc(sizeof(*vport_list), GFP_KERNEL);
+ if (!vport_list) {
+ kfree(lio_vport);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(vport_list, 0, sizeof(struct efct_lio_vport_list_t));
+ vport_list->lio_vport = lio_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);
+
+ lio_vport->sessions = efct_create_dfs_session(efct, lio_vport, 1);
+
+ 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;
+
+ return &lio_vport->vport_wwn;
+}
+
+static void
+efct_lio_drop_sport(struct se_wwn *wwn)
+{
+ struct efct_lio_sport *lio_sport = container_of(wwn,
+ struct efct_lio_sport, sport_wwn);
+ struct efct *efct = lio_sport->efct;
+
+ /* only physical sport should exist, free lio_sport allocated
+ * in efct_lio_make_sport.
+ */
+
+ debugfs_remove(lio_sport->sessions);
+ lio_sport->sessions = NULL;
+
+ kfree(efct->tgt_efct.lio_sport);
+ efct->tgt_efct.lio_sport = NULL;
+}
+
+static void
+efct_lio_npiv_drop_sport(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;
+
+ spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
+
+ debugfs_remove(lio_vport->sessions);
+
+ if (lio_vport->fc_vport)
+ fc_vport_terminate(lio_vport->fc_vport);
+
+ lio_vport->sessions = NULL;
+
+ 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_sport *lio_sport = container_of(wwn,
+ struct efct_lio_sport, sport_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->sport = lio_sport;
+ tpg->tpgt = n;
+ atomic_set(&tpg->enabled, 0);
+
+ 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_sport->efct;
+ efct->tgt_efct.tpg = tpg;
+ efc_log_debug(efct, "create portal group %d\n", tpg->tpgt);
+
+ 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);
+
+ efc_log_debug(tpg->sport->efct, "drop portal group %d\n", tpg->tpgt);
+ tpg->sport->efct->tgt_efct.tpg = NULL;
+ core_tpg_deregister(se_tpg);
+ 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;
+ atomic_set(&tpg->enabled, 0);
+
+ 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 EFC_SUCCESS;
+}
+
+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->sport->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_test(efct, "found tpg on vport\n");
+ tpg = lio_vport->tpg;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags);
+ return tpg;
+}
+
+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_scsi_tgt_node *tgt_node = NULL;
+
+ tgt_node = kzalloc(sizeof(*tgt_node), GFP_KERNEL);
+ if (!tgt_node)
+ return EFC_FAIL;
+
+ tgt_node->session = se_sess;
+ node->tgt_node = tgt_node;
+
+ return EFC_SUCCESS;
+}
+
+int efct_scsi_tgt_new_device(struct efct *efct)
+{
+ int rc = 0;
+ 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 -ENOMEM;
+ }
+
+ spin_lock_init(&efct->tgt_efct.efct_lio_lock);
+ INIT_LIST_HEAD(&efct->tgt_efct.vport_list);
+
+ return rc;
+}
+
+int efct_scsi_tgt_del_device(struct efct *efct)
+{
+ flush_workqueue(lio_wq);
+
+ return EFC_SUCCESS;
+}
+
+int
+efct_scsi_tgt_new_domain(struct efc *efc, struct efc_domain *domain)
+{
+ return 0;
+}
+
+void
+efct_scsi_tgt_del_domain(struct efc *efc, struct efc_domain *domain)
+{
+}
+
+/* Called by the libefc when new sli port (sport) is discovered */
+int
+efct_scsi_tgt_new_sport(struct efc *efc, struct efc_sli_port *sport)
+{
+ struct efct *efct = sport->efc->base;
+
+ efc_log_debug(efct, "New SPORT: %s bound to %s\n", sport->display_name,
+ efct->tgt_efct.lio_sport->wwpn_str);
+
+ return EFC_SUCCESS;
+}
+
+/* Called by the libefc when a sport goes away. */
+void
+efct_scsi_tgt_del_sport(struct efc *efc, struct efc_sli_port *sport)
+{
+ efc_log_debug(efc, "Del SPORT: %s\n",
+ sport->display_name);
+}
+/* Called by libefc to validate node. */
+int
+efct_scsi_validate_initiator(struct efc *efc, struct efc_node *node)
+{
+ return 1;
+}
+
+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 = NULL;
+ struct se_portal_group *se_tpg;
+ struct se_session *se_sess;
+ int watermark;
+ int initiator_count;
+
+ /* 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");
+ return;
+ }
+
+ efc_log_debug(efct, "new initiator se_sess=%p node=%p\n",
+ se_sess, node);
+
+ /* update IO watermark: increment initiator count */
+ initiator_count =
+ atomic_add_return(1, &efct->tgt_efct.initiator_count);
+ watermark = (efct->tgt_efct.watermark_max -
+ initiator_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);
+}
+
+/* Called by the libefc when new a new remote initiator is discovered */
+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_SUCCESS;
+}
+
+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_scsi_tgt_node *tgt_node = NULL;
+ struct se_session *se_sess;
+
+ tgt_node = node->tgt_node;
+ se_sess = tgt_node->session;
+
+ if (!se_sess) {
+ /* base driver has sent back-to-back requests
+ * to unreg session with no intervening
+ * register
+ */
+ efc_log_test(efct,
+ "unreg session for NULL session\n");
+ efc_scsi_del_initiator_complete(node->efc,
+ node);
+ return;
+ }
+
+ efc_log_debug(efct, "unreg session se_sess=%p node=%p\n",
+ se_sess, node);
+
+ /* first flag all session commands to complete */
+ target_sess_cmd_list_set_waiting(se_sess);
+
+ /* now wait for session commands to complete */
+ target_wait_for_sess_cmds(se_sess);
+ target_remove_session(se_sess);
+
+ kfree(node->tgt_node);
+
+ node->tgt_node = NULL;
+ efc_scsi_del_initiator_complete(node->efc, node);
+
+ kfree(wq_data);
+}
+
+/* Called by the libefc when an initiator goes away. */
+int efct_scsi_del_initiator(struct efc *efc, struct efc_node *node,
+ int reason)
+{
+ struct efct *efct = node->efc->base;
+ struct efct_lio_wq_data *wq_data;
+ int watermark;
+ int initiator_count;
+
+ if (reason == EFCT_SCSI_INITIATOR_MISSING)
+ return EFCT_SCSI_CALL_COMPLETE;
+
+ wq_data = kmalloc(sizeof(*wq_data), GFP_ATOMIC);
+ if (!wq_data)
+ return EFCT_SCSI_CALL_COMPLETE;
+
+ memset(wq_data, 0, sizeof(*wq_data));
+ 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
+ */
+ initiator_count =
+ atomic_sub_return(1, &efct->tgt_efct.initiator_count);
+ watermark = (efct->tgt_efct.watermark_max -
+ initiator_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 EFCT_SCSI_CALL_ASYNC;
+}
+
+int 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 efct *efct = io->efct;
+ char *ddir;
+ struct efct_scsi_tgt_node *tgt_node = NULL;
+ 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->tgt_node;
+ se_sess = tgt_node->session;
+ if (se_sess) {
+ efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_SUBMIT_CMD);
+ rc = target_submit_cmd(&io->tgt_io.cmd, se_sess,
+ cdb, &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 submit cmd se_cmd: %p\n",
+ &ocp->cmd);
+ efct_scsi_io_free(io);
+ }
+ }
+
+ return rc;
+}
+
+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_scsi_tgt_node *tgt_node = NULL;
+ 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->tgt_node;
+
+ se_sess = tgt_node->session;
+ if (!se_sess)
+ return EFC_SUCCESS;
+
+ 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 EFC_SUCCESS;
+
+tmf_fail:
+ efct_scsi_send_tmf_resp(tmfio, EFCT_SCSI_TMF_FUNCTION_REJECTED,
+ NULL, efct_lio_null_tmf_done, NULL);
+ return EFC_SUCCESS;
+}
+
+/* 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_sport,
+ .fabric_drop_wwn = efct_lio_drop_sport,
+ .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_sport,
+ .fabric_drop_wwn = efct_lio_npiv_drop_sport,
+ .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 EFC_SUCCESS;
+}
+
+int efct_scsi_tgt_driver_exit(void)
+{
+ target_unregister_template(&efct_lio_ops);
+ target_unregister_template(&efct_lio_npiv_ops);
+ return EFC_SUCCESS;
+}
diff --git a/drivers/scsi/elx/efct/efct_lio.h b/drivers/scsi/elx/efct/efct_lio.h
new file mode 100644
index 000000000000..f884bcd3b240
--- /dev/null
+++ b/drivers/scsi/elx/efct/efct_lio.h
@@ -0,0 +1,178 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#ifndef __EFCT_LIO_H__
+#define __EFCT_LIO_H__
+
+#include "efct_scsi.h"
+#include <target/target_core_base.h>
+
+#define efct_lio_io_printf(io, fmt, ...) \
+ efc_log_debug(io->efct, \
+ "[%s] [%04x][i:%04x t:%04x h:%04x][c:%02x]" fmt, \
+ io->node->display_name, io->instance_index, \
+ io->init_task_tag, io->tgt_task_tag, io->hw_tag, \
+ io->tgt_io.cmd.t_task_cdb[0], ##__VA_ARGS__)
+
+#define efct_lio_tmfio_printf(io, fmt, ...) \
+ efc_log_debug(io->efct, \
+ "[%s] [%04x][i:%04x t:%04x h:%04x][f:%02x]" fmt, \
+ io->node->display_name, io->instance_index, \
+ io->init_task_tag, io->tgt_task_tag, io->hw_tag, \
+ io->tgt_io.tmf, ##__VA_ARGS__)
+
+#define efct_set_lio_io_state(io, value) (io->tgt_io.state |= value)
+
+struct efct_lio_wq_data {
+ struct efct *efct;
+ void *ptr;
+ struct work_struct work;
+};
+
+/* Target private efct structure */
+struct efct_scsi_tgt {
+ u32 max_sge;
+ u32 max_sgl;
+
+ /*
+ * Variables used to send task set full. We are using a high watermark
+ * method to send task set full. We will reserve a fixed number of IOs
+ * per initiator plus a fudge factor. Once we reach this number,
+ * then the target will start sending task set full/busy responses.
+ */
+ atomic_t initiator_count;
+ atomic_t ios_in_use;
+ atomic_t io_high_watermark;
+
+ atomic_t watermark_hit;
+ int watermark_min;
+ int watermark_max;
+
+ struct efct_lio_sport *lio_sport;
+ struct efct_lio_tpg *tpg;
+
+ struct list_head vport_list;
+ /* Protects vport list*/
+ spinlock_t efct_lio_lock;
+
+ u64 wwnn;
+};
+
+struct efct_scsi_tgt_sport {
+ struct efct_lio_sport *lio_sport;
+};
+
+struct efct_scsi_tgt_node {
+ struct se_session *session;
+};
+
+#define EFCT_LIO_STATE_SCSI_RECV_CMD (1 << 0)
+#define EFCT_LIO_STATE_TGT_SUBMIT_CMD (1 << 1)
+#define EFCT_LIO_STATE_TFO_QUEUE_DATA_IN (1 << 2)
+#define EFCT_LIO_STATE_TFO_WRITE_PENDING (1 << 3)
+#define EFCT_LIO_STATE_TGT_EXECUTE_CMD (1 << 4)
+#define EFCT_LIO_STATE_SCSI_SEND_RD_DATA (1 << 5)
+#define EFCT_LIO_STATE_TFO_CHK_STOP_FREE (1 << 6)
+#define EFCT_LIO_STATE_SCSI_DATA_DONE (1 << 7)
+#define EFCT_LIO_STATE_TFO_QUEUE_STATUS (1 << 8)
+#define EFCT_LIO_STATE_SCSI_SEND_RSP (1 << 9)
+#define EFCT_LIO_STATE_SCSI_RSP_DONE (1 << 10)
+#define EFCT_LIO_STATE_TGT_GENERIC_FREE (1 << 11)
+#define EFCT_LIO_STATE_SCSI_RECV_TMF (1 << 12)
+#define EFCT_LIO_STATE_TGT_SUBMIT_TMR (1 << 13)
+#define EFCT_LIO_STATE_TFO_WRITE_PEND_STATUS (1 << 14)
+#define EFCT_LIO_STATE_TGT_GENERIC_REQ_FAILURE (1 << 15)
+
+#define EFCT_LIO_STATE_TFO_ABORTED_TASK (1 << 29)
+#define EFCT_LIO_STATE_TFO_RELEASE_CMD (1 << 30)
+#define EFCT_LIO_STATE_SCSI_CMPL_CMD (1 << 31)
+
+struct efct_scsi_tgt_io {
+ struct se_cmd cmd;
+ unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
+ enum dma_data_direction ddir;
+ int task_attr;
+ u64 lun;
+
+ u32 state;
+ u8 tmf;
+ struct efct_io *io_to_abort;
+ u32 seg_map_cnt;
+ u32 seg_cnt;
+ u32 cur_seg;
+ enum efct_scsi_io_status err;
+ bool aborting;
+ bool rsp_sent;
+ uint32_t transferred_len;
+};
+
+/* Handler return codes */
+enum {
+ SCSI_HANDLER_DATAPHASE_STARTED = 1,
+ SCSI_HANDLER_RESP_STARTED,
+ SCSI_HANDLER_VALIDATED_DATAPHASE_STARTED,
+ SCSI_CMD_NOT_SUPPORTED,
+};
+
+#define WWN_NAME_LEN 32
+struct efct_lio_vport {
+ u64 wwpn;
+ u64 npiv_wwpn;
+ u64 npiv_wwnn;
+ unsigned char wwpn_str[WWN_NAME_LEN];
+ struct se_wwn vport_wwn;
+ struct efct_lio_tpg *tpg;
+ struct efct *efct;
+ struct dentry *sessions;
+ struct Scsi_Host *shost;
+ struct fc_vport *fc_vport;
+ atomic_t enable;
+};
+
+struct efct_lio_sport {
+ u64 wwpn;
+ unsigned char wwpn_str[WWN_NAME_LEN];
+ struct se_wwn sport_wwn;
+ struct efct_lio_tpg *tpg;
+ struct efct *efct;
+ struct dentry *sessions;
+ atomic_t enable;
+};
+
+struct efct_lio_tpg_attrib {
+ int generate_node_acls;
+ int cache_dynamic_acls;
+ int demo_mode_write_protect;
+ int prod_mode_write_protect;
+ int demo_mode_login_only;
+ bool session_deletion_wait;
+};
+
+struct efct_lio_tpg {
+ struct se_portal_group tpg;
+ struct efct_lio_sport *sport;
+ struct efct_lio_vport *vport;
+ struct efct_lio_tpg_attrib tpg_attrib;
+ unsigned short tpgt;
+ atomic_t enabled;
+};
+
+struct efct_lio_nacl {
+ u64 nport_wwnn;
+ char nport_name[WWN_NAME_LEN];
+ struct se_session *session;
+ struct se_node_acl se_node_acl;
+};
+
+struct efct_lio_vport_list_t {
+ struct list_head list_entry;
+ struct efct_lio_vport *lio_vport;
+};
+
+int efct_scsi_tgt_driver_init(void);
+int efct_scsi_tgt_driver_exit(void);
+
+#endif /*__EFCT_LIO_H__ */
--
2.16.4