// 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 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 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 = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM,
"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,
.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,
.write_pending = efct_lio_write_pending,
.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,
.default_submit_type = TARGET_DIRECT_SUBMIT,
.direct_submit_supp = 1,
};
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,
.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,
.write_pending = efct_lio_write_pending,
.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,
.default_submit_type = TARGET_DIRECT_SUBMIT,
.direct_submit_supp = 1,
};
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;
}
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