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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Browse Source 
Pull SCSI target updates from Nicholas Bellinger:
 "The highlights this round include:

  - add support for SCSI Referrals (Hannes)
  - add support for T10 DIF into target core (nab + mkp)
  - add support for T10 DIF emulation in FILEIO + RAMDISK backends (Sagi + nab)
  - add support for T10 DIF -> bio_integrity passthrough in IBLOCK backend (nab)
  - prep changes to iser-target for >= v3.15 T10 DIF support (Sagi)
  - add support for qla2xxx N_Port ID Virtualization - NPIV (Saurav + Quinn)
  - allow percpu_ida_alloc() to receive task state bitmask (Kent)
  - fix >= v3.12 iscsi-target session reset hung task regression (nab)
  - fix >= v3.13 percpu_ref se_lun->lun_ref_active race (nab)
  - fix a long-standing network portal creation race (Andy)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (51 commits)
  target: Fix percpu_ref_put race in transport_lun_remove_cmd
  target/iscsi: Fix network portal creation race
  target: Report bad sector in sense data for DIF errors
  iscsi-target: Convert gfp_t parameter to task state bitmask
  iscsi-target: Fix connection reset hang with percpu_ida_alloc
  percpu_ida: Make percpu_ida_alloc + callers accept task state bitmask
  iscsi-target: Pre-allocate more tags to avoid ack starvation
  qla2xxx: Configure NPIV fc_vport via tcm_qla2xxx_npiv_make_lport
  qla2xxx: Enhancements to enable NPIV support for QLOGIC ISPs with TCM/LIO.
  qla2xxx: Fix scsi_host leak on qlt_lport_register callback failure
  IB/isert: pass scatterlist instead of cmd to fast_reg_mr routine
  IB/isert: Move fastreg descriptor creation to a function
  IB/isert: Avoid frwr notation, user fastreg
  IB/isert: seperate connection protection domains and dma MRs
  tcm_loop: Enable DIF/DIX modes in SCSI host LLD
  target/rd: Add DIF protection into rd_execute_rw
  target/rd: Add support for protection SGL setup + release
  target/rd: Refactor rd_build_device_space + rd_release_device_space
  target/file: Add DIF protection support to fd_execute_rw
  target/file: Add DIF protection init/format support
  ...
This commit is contained in:
Linus Torvalds 2014-01-31 15:31:23 -08:00
commit 4e13c5d021
43 changed files with 2302 additions and 507 deletions
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6
block/blk-mq-tag.c
View File

@ -36,7 +36,8 @@ static unsigned int __blk_mq_get_tag(struct blk_mq_tags *tags, gfp_t gfp)
{
int tag;
tag = percpu_ida_alloc(&tags->free_tags, gfp);
tag = percpu_ida_alloc(&tags->free_tags, (gfp & __GFP_WAIT) ?
TASK_UNINTERRUPTIBLE : TASK_RUNNING);
if (tag < 0)
return BLK_MQ_TAG_FAIL;
return tag + tags->nr_reserved_tags;
@ -52,7 +53,8 @@ static unsigned int __blk_mq_get_reserved_tag(struct blk_mq_tags *tags,
return BLK_MQ_TAG_FAIL;
}
tag = percpu_ida_alloc(&tags->reserved_tags, gfp);
tag = percpu_ida_alloc(&tags->reserved_tags, (gfp & __GFP_WAIT) ?
TASK_UNINTERRUPTIBLE : TASK_RUNNING);
if (tag < 0)
return BLK_MQ_TAG_FAIL;
return tag;

222
drivers/infiniband/ulp/isert/ib_isert.c
View File

@ -47,10 +47,10 @@ static int
isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);
static void
isert_unreg_rdma_frwr(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn);
isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn);
static int
isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);
isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);
static void
isert_qp_event_callback(struct ib_event *e, void *context)
@ -227,11 +227,11 @@ isert_create_device_ib_res(struct isert_device *device)
/* asign function handlers */
if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) {
device->use_frwr = 1;
device->reg_rdma_mem = isert_reg_rdma_frwr;
device->unreg_rdma_mem = isert_unreg_rdma_frwr;
device->use_fastreg = 1;
device->reg_rdma_mem = isert_reg_rdma;
device->unreg_rdma_mem = isert_unreg_rdma;
} else {
device->use_frwr = 0;
device->use_fastreg = 0;
device->reg_rdma_mem = isert_map_rdma;
device->unreg_rdma_mem = isert_unmap_cmd;
}
@ -239,9 +239,10 @@ isert_create_device_ib_res(struct isert_device *device)
device->cqs_used = min_t(int, num_online_cpus(),
device->ib_device->num_comp_vectors);
device->cqs_used = min(ISERT_MAX_CQ, device->cqs_used);
pr_debug("Using %d CQs, device %s supports %d vectors support FRWR %d\n",
pr_debug("Using %d CQs, device %s supports %d vectors support "
"Fast registration %d\n",
device->cqs_used, device->ib_device->name,
device->ib_device->num_comp_vectors, device->use_frwr);
device->ib_device->num_comp_vectors, device->use_fastreg);
device->cq_desc = kzalloc(sizeof(struct isert_cq_desc) *
device->cqs_used, GFP_KERNEL);
if (!device->cq_desc) {
@ -250,13 +251,6 @@ isert_create_device_ib_res(struct isert_device *device)
}
cq_desc = device->cq_desc;
device->dev_pd = ib_alloc_pd(ib_dev);
if (IS_ERR(device->dev_pd)) {
ret = PTR_ERR(device->dev_pd);
pr_err("ib_alloc_pd failed for dev_pd: %d\n", ret);
goto out_cq_desc;
}
for (i = 0; i < device->cqs_used; i++) {
cq_desc[i].device = device;
cq_desc[i].cq_index = i;
@ -294,13 +288,6 @@ isert_create_device_ib_res(struct isert_device *device)
goto out_cq;
}
device->dev_mr = ib_get_dma_mr(device->dev_pd, IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(device->dev_mr)) {
ret = PTR_ERR(device->dev_mr);
pr_err("ib_get_dma_mr failed for dev_mr: %d\n", ret);
goto out_cq;
}
return 0;
out_cq:
@ -316,9 +303,6 @@ out_cq:
ib_destroy_cq(device->dev_tx_cq[j]);
}
}
ib_dealloc_pd(device->dev_pd);
out_cq_desc:
kfree(device->cq_desc);
return ret;
@ -341,8 +325,6 @@ isert_free_device_ib_res(struct isert_device *device)
device->dev_tx_cq[i] = NULL;
}
ib_dereg_mr(device->dev_mr);
ib_dealloc_pd(device->dev_pd);
kfree(device->cq_desc);
}
@ -398,18 +380,18 @@ isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id)
}
static void
isert_conn_free_frwr_pool(struct isert_conn *isert_conn)
isert_conn_free_fastreg_pool(struct isert_conn *isert_conn)
{
struct fast_reg_descriptor *fr_desc, *tmp;
int i = 0;
if (list_empty(&isert_conn->conn_frwr_pool))
if (list_empty(&isert_conn->conn_fr_pool))
return;
pr_debug("Freeing conn %p frwr pool", isert_conn);
pr_debug("Freeing conn %p fastreg pool", isert_conn);
list_for_each_entry_safe(fr_desc, tmp,
&isert_conn->conn_frwr_pool, list) {
&isert_conn->conn_fr_pool, list) {
list_del(&fr_desc->list);
ib_free_fast_reg_page_list(fr_desc->data_frpl);
ib_dereg_mr(fr_desc->data_mr);
@ -417,20 +399,47 @@ isert_conn_free_frwr_pool(struct isert_conn *isert_conn)
++i;
}
if (i < isert_conn->conn_frwr_pool_size)
if (i < isert_conn->conn_fr_pool_size)
pr_warn("Pool still has %d regions registered\n",
isert_conn->conn_frwr_pool_size - i);
isert_conn->conn_fr_pool_size - i);
}
static int
isert_conn_create_frwr_pool(struct isert_conn *isert_conn)
isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
struct fast_reg_descriptor *fr_desc)
{
fr_desc->data_frpl = ib_alloc_fast_reg_page_list(ib_device,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_frpl)) {
pr_err("Failed to allocate data frpl err=%ld\n",
PTR_ERR(fr_desc->data_frpl));
return PTR_ERR(fr_desc->data_frpl);
}
fr_desc->data_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_mr)) {
pr_err("Failed to allocate data frmr err=%ld\n",
PTR_ERR(fr_desc->data_mr));
ib_free_fast_reg_page_list(fr_desc->data_frpl);
return PTR_ERR(fr_desc->data_mr);
}
pr_debug("Create fr_desc %p page_list %p\n",
fr_desc, fr_desc->data_frpl->page_list);
fr_desc->valid = true;
return 0;
}
static int
isert_conn_create_fastreg_pool(struct isert_conn *isert_conn)
{
struct fast_reg_descriptor *fr_desc;
struct isert_device *device = isert_conn->conn_device;
int i, ret;
INIT_LIST_HEAD(&isert_conn->conn_frwr_pool);
isert_conn->conn_frwr_pool_size = 0;
INIT_LIST_HEAD(&isert_conn->conn_fr_pool);
isert_conn->conn_fr_pool_size = 0;
for (i = 0; i < ISCSI_DEF_XMIT_CMDS_MAX; i++) {
fr_desc = kzalloc(sizeof(*fr_desc), GFP_KERNEL);
if (!fr_desc) {
@ -439,40 +448,25 @@ isert_conn_create_frwr_pool(struct isert_conn *isert_conn)
goto err;
}
fr_desc->data_frpl =
ib_alloc_fast_reg_page_list(device->ib_device,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_frpl)) {
pr_err("Failed to allocate fr_pg_list err=%ld\n",
PTR_ERR(fr_desc->data_frpl));
ret = PTR_ERR(fr_desc->data_frpl);
ret = isert_create_fr_desc(device->ib_device,
isert_conn->conn_pd, fr_desc);
if (ret) {
pr_err("Failed to create fastreg descriptor err=%d\n",
ret);
goto err;
}
fr_desc->data_mr = ib_alloc_fast_reg_mr(device->dev_pd,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_mr)) {
pr_err("Failed to allocate frmr err=%ld\n",
PTR_ERR(fr_desc->data_mr));
ret = PTR_ERR(fr_desc->data_mr);
ib_free_fast_reg_page_list(fr_desc->data_frpl);
goto err;
}
pr_debug("Create fr_desc %p page_list %p\n",
fr_desc, fr_desc->data_frpl->page_list);
fr_desc->valid = true;
list_add_tail(&fr_desc->list, &isert_conn->conn_frwr_pool);
isert_conn->conn_frwr_pool_size++;
list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool);
isert_conn->conn_fr_pool_size++;
}
pr_debug("Creating conn %p frwr pool size=%d",
isert_conn, isert_conn->conn_frwr_pool_size);
pr_debug("Creating conn %p fastreg pool size=%d",
isert_conn, isert_conn->conn_fr_pool_size);
return 0;
err:
isert_conn_free_frwr_pool(isert_conn);
isert_conn_free_fastreg_pool(isert_conn);
return ret;
}
@ -558,14 +552,29 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
}
isert_conn->conn_device = device;
isert_conn->conn_pd = device->dev_pd;
isert_conn->conn_mr = device->dev_mr;
isert_conn->conn_pd = ib_alloc_pd(isert_conn->conn_device->ib_device);
if (IS_ERR(isert_conn->conn_pd)) {
ret = PTR_ERR(isert_conn->conn_pd);
pr_err("ib_alloc_pd failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_pd;
}
if (device->use_frwr) {
ret = isert_conn_create_frwr_pool(isert_conn);
isert_conn->conn_mr = ib_get_dma_mr(isert_conn->conn_pd,
IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(isert_conn->conn_mr)) {
ret = PTR_ERR(isert_conn->conn_mr);
pr_err("ib_get_dma_mr failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_mr;
}
if (device->use_fastreg) {
ret = isert_conn_create_fastreg_pool(isert_conn);
if (ret) {
pr_err("Conn: %p failed to create frwr_pool\n", isert_conn);
goto out_frwr;
pr_err("Conn: %p failed to create fastreg pool\n",
isert_conn);
goto out_fastreg;
}
}
@ -582,9 +591,13 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
return 0;
out_conn_dev:
if (device->use_frwr)
isert_conn_free_frwr_pool(isert_conn);
out_frwr:
if (device->use_fastreg)
isert_conn_free_fastreg_pool(isert_conn);
out_fastreg:
ib_dereg_mr(isert_conn->conn_mr);
out_mr:
ib_dealloc_pd(isert_conn->conn_pd);
out_pd:
isert_device_try_release(device);
out_rsp_dma_map:
ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
@ -608,8 +621,8 @@ isert_connect_release(struct isert_conn *isert_conn)
pr_debug("Entering isert_connect_release(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
if (device && device->use_frwr)
isert_conn_free_frwr_pool(isert_conn);
if (device && device->use_fastreg)
isert_conn_free_fastreg_pool(isert_conn);
if (isert_conn->conn_qp) {
cq_index = ((struct isert_cq_desc *)
@ -623,6 +636,9 @@ isert_connect_release(struct isert_conn *isert_conn)
isert_free_rx_descriptors(isert_conn);
rdma_destroy_id(isert_conn->conn_cm_id);
ib_dereg_mr(isert_conn->conn_mr);
ib_dealloc_pd(isert_conn->conn_pd);
if (isert_conn->login_buf) {
ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
ISER_RX_LOGIN_SIZE, DMA_TO_DEVICE);
@ -1024,13 +1040,13 @@ isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen,
}
static struct iscsi_cmd
*isert_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp)
*isert_allocate_cmd(struct iscsi_conn *conn)
{
struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
struct isert_cmd *isert_cmd;
struct iscsi_cmd *cmd;
cmd = iscsit_allocate_cmd(conn, gfp);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd) {
pr_err("Unable to allocate iscsi_cmd + isert_cmd\n");
return NULL;
@ -1219,7 +1235,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
switch (opcode) {
case ISCSI_OP_SCSI_CMD:
cmd = isert_allocate_cmd(conn, GFP_KERNEL);
cmd = isert_allocate_cmd(conn);
if (!cmd)
break;
@ -1233,7 +1249,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
rx_desc, (unsigned char *)hdr);
break;
case ISCSI_OP_NOOP_OUT:
cmd = isert_allocate_cmd(conn, GFP_KERNEL);
cmd = isert_allocate_cmd(conn);
if (!cmd)
break;
@ -1246,7 +1262,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
(unsigned char *)hdr);
break;
case ISCSI_OP_SCSI_TMFUNC:
cmd = isert_allocate_cmd(conn, GFP_KERNEL);
cmd = isert_allocate_cmd(conn);
if (!cmd)
break;
@ -1254,7 +1270,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
(unsigned char *)hdr);
break;
case ISCSI_OP_LOGOUT:
cmd = isert_allocate_cmd(conn, GFP_KERNEL);
cmd = isert_allocate_cmd(conn);
if (!cmd)
break;
@ -1265,7 +1281,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
HZ);
break;
case ISCSI_OP_TEXT:
cmd = isert_allocate_cmd(conn, GFP_KERNEL);
cmd = isert_allocate_cmd(conn);
if (!cmd)
break;
@ -1404,25 +1420,25 @@ isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
}
static void
isert_unreg_rdma_frwr(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
{
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
LIST_HEAD(unmap_list);
pr_debug("unreg_frwr_cmd: %p\n", isert_cmd);
pr_debug("unreg_fastreg_cmd: %p\n", isert_cmd);
if (wr->fr_desc) {
pr_debug("unreg_frwr_cmd: %p free fr_desc %p\n",
pr_debug("unreg_fastreg_cmd: %p free fr_desc %p\n",
isert_cmd, wr->fr_desc);
spin_lock_bh(&isert_conn->conn_lock);
list_add_tail(&wr->fr_desc->list, &isert_conn->conn_frwr_pool);
list_add_tail(&wr->fr_desc->list, &isert_conn->conn_fr_pool);
spin_unlock_bh(&isert_conn->conn_lock);
wr->fr_desc = NULL;
}
if (wr->sge) {
pr_debug("unreg_frwr_cmd: %p unmap_sg op\n", isert_cmd);
pr_debug("unreg_fastreg_cmd: %p unmap_sg op\n", isert_cmd);
ib_dma_unmap_sg(ib_dev, wr->sge, wr->num_sge,
(wr->iser_ib_op == ISER_IB_RDMA_WRITE) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
@ -2163,26 +2179,22 @@ isert_map_fr_pagelist(struct ib_device *ib_dev,
static int
isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc,
struct isert_cmd *isert_cmd, struct isert_conn *isert_conn,
struct ib_sge *ib_sge, u32 offset, unsigned int data_len)
struct isert_conn *isert_conn, struct scatterlist *sg_start,
struct ib_sge *ib_sge, u32 sg_nents, u32 offset,
unsigned int data_len)
{
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct scatterlist *sg_start;
u32 sg_off, page_off;
struct ib_send_wr fr_wr, inv_wr;
struct ib_send_wr *bad_wr, *wr = NULL;
int ret, pagelist_len;
u32 page_off;
u8 key;
int ret, sg_nents, pagelist_len;
sg_off = offset / PAGE_SIZE;
sg_start = &cmd->se_cmd.t_data_sg[sg_off];
sg_nents = min_t(unsigned int, cmd->se_cmd.t_data_nents - sg_off,
ISCSI_ISER_SG_TABLESIZE);
sg_nents = min_t(unsigned int, sg_nents, ISCSI_ISER_SG_TABLESIZE);
page_off = offset % PAGE_SIZE;
pr_debug("Cmd: %p use fr_desc %p sg_nents %d sg_off %d offset %u\n",
isert_cmd, fr_desc, sg_nents, sg_off, offset);
pr_debug("Use fr_desc %p sg_nents %d offset %u\n",
fr_desc, sg_nents, offset);
pagelist_len = isert_map_fr_pagelist(ib_dev, sg_start, sg_nents,
&fr_desc->data_frpl->page_list[0]);
@ -2232,8 +2244,8 @@ isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc,
}
static int
isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr)
isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr)
{
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
@ -2251,9 +2263,9 @@ isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
data_left = se_cmd->data_length;
} else {
sg_off = cmd->write_data_done / PAGE_SIZE;
data_left = se_cmd->data_length - cmd->write_data_done;
offset = cmd->write_data_done;
sg_off = offset / PAGE_SIZE;
data_left = se_cmd->data_length - cmd->write_data_done;
isert_cmd->tx_desc.isert_cmd = isert_cmd;
}
@ -2311,16 +2323,16 @@ isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
wr->fr_desc = NULL;
} else {
spin_lock_irqsave(&isert_conn->conn_lock, flags);
fr_desc = list_first_entry(&isert_conn->conn_frwr_pool,
fr_desc = list_first_entry(&isert_conn->conn_fr_pool,
struct fast_reg_descriptor, list);
list_del(&fr_desc->list);
spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
wr->fr_desc = fr_desc;
ret = isert_fast_reg_mr(fr_desc, isert_cmd, isert_conn,
ib_sge, offset, data_len);
ret = isert_fast_reg_mr(fr_desc, isert_conn, sg_start,
ib_sge, sg_nents, offset, data_len);
if (ret) {
list_add_tail(&fr_desc->list, &isert_conn->conn_frwr_pool);
list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool);
goto unmap_sg;
}
}

10
drivers/infiniband/ulp/isert/ib_isert.h
View File

@ -119,9 +119,9 @@ struct isert_conn {
wait_queue_head_t conn_wait;
wait_queue_head_t conn_wait_comp_err;
struct kref conn_kref;
struct list_head conn_frwr_pool;
int conn_frwr_pool_size;
/* lock to protect frwr_pool */
struct list_head conn_fr_pool;
int conn_fr_pool_size;
/* lock to protect fastreg pool */
spinlock_t conn_lock;
#define ISERT_COMP_BATCH_COUNT 8
int conn_comp_batch;
@ -139,13 +139,11 @@ struct isert_cq_desc {
};
struct isert_device {
int use_frwr;
int use_fastreg;
int cqs_used;
int refcount;
int cq_active_qps[ISERT_MAX_CQ];
struct ib_device *ib_device;
struct ib_pd *dev_pd;
struct ib_mr *dev_mr;
struct ib_cq *dev_rx_cq[ISERT_MAX_CQ];
struct ib_cq *dev_tx_cq[ISERT_MAX_CQ];
struct isert_cq_desc *cq_desc;

2
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -1990,6 +1990,8 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
vha->flags.delete_progress = 1;
qlt_remove_target(ha, vha);
fc_remove_host(vha->host);
scsi_remove_host(vha->host);

12
drivers/scsi/qla2xxx/qla_def.h
View File

@ -2750,6 +2750,13 @@ struct qlfc_fw {
uint32_t len;
};
struct scsi_qlt_host {
void *target_lport_ptr;
struct mutex tgt_mutex;
struct mutex tgt_host_action_mutex;
struct qla_tgt *qla_tgt;
};
struct qlt_hw_data {
/* Protected by hw lock */
uint32_t enable_class_2:1;
@ -2765,15 +2772,11 @@ struct qlt_hw_data {
uint32_t __iomem *atio_q_in;
uint32_t __iomem *atio_q_out;
void *target_lport_ptr;
struct qla_tgt_func_tmpl *tgt_ops;
struct qla_tgt *qla_tgt;
struct qla_tgt_cmd *cmds[DEFAULT_OUTSTANDING_COMMANDS];
uint16_t current_handle;
struct qla_tgt_vp_map *tgt_vp_map;
struct mutex tgt_mutex;
struct mutex tgt_host_action_mutex;
int saved_set;
uint16_t saved_exchange_count;
@ -3435,6 +3438,7 @@ typedef struct scsi_qla_host {
#define VP_ERR_FAB_LOGOUT 4
#define VP_ERR_ADAP_NORESOURCES 5
struct qla_hw_data *hw;
struct scsi_qlt_host vha_tgt;
struct req_que *req;
int fw_heartbeat_counter;
int seconds_since_last_heartbeat;

171
drivers/scsi/qla2xxx/qla_target.c
View File

@ -590,7 +590,7 @@ static struct qla_tgt_sess *qlt_create_sess(
/* Check to avoid double sessions */
spin_lock_irqsave(&ha->hardware_lock, flags);
list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list,
list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
sess_list_entry) {
if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
@ -627,7 +627,7 @@ static struct qla_tgt_sess *qlt_create_sess(
return NULL;
}
sess->tgt = ha->tgt.qla_tgt;
sess->tgt = vha->vha_tgt.qla_tgt;
sess->vha = vha;
sess->s_id = fcport->d_id;
sess->loop_id = fcport->loop_id;
@ -635,7 +635,7 @@ static struct qla_tgt_sess *qlt_create_sess(
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
"Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
sess, ha->tgt.qla_tgt);
sess, vha->vha_tgt.qla_tgt);
be_sid[0] = sess->s_id.b.domain;
be_sid[1] = sess->s_id.b.area;
@ -662,8 +662,8 @@ static struct qla_tgt_sess *qlt_create_sess(
memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
spin_lock_irqsave(&ha->hardware_lock, flags);
list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list);
ha->tgt.qla_tgt->sess_count++;
list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
vha->vha_tgt.qla_tgt->sess_count++;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
@ -682,7 +682,7 @@ static struct qla_tgt_sess *qlt_create_sess(
void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_sess *sess;
unsigned long flags;
@ -692,6 +692,9 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
if (!tgt || (fcport->port_type != FCT_INITIATOR))
return;
if (qla_ini_mode_enabled(vha))
return;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (tgt->tgt_stop) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -701,9 +704,9 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
if (!sess) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
sess = qlt_create_sess(vha, fcport, false);
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
} else {
@ -739,7 +742,7 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_sess *sess;
unsigned long flags;
@ -806,12 +809,12 @@ void qlt_stop_phase1(struct qla_tgt *tgt)
* Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
* Lock is needed, because we still can get an incoming packet.
*/
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
tgt->tgt_stop = 1;
qlt_clear_tgt_db(tgt, true);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
flush_delayed_work(&tgt->sess_del_work);
@ -845,20 +848,21 @@ EXPORT_SYMBOL(qlt_stop_phase1);
void qlt_stop_phase2(struct qla_tgt *tgt)
{
struct qla_hw_data *ha = tgt->ha;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
unsigned long flags;
if (tgt->tgt_stopped) {
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f,
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
"Already in tgt->tgt_stopped state\n");
dump_stack();
return;
}
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b,
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
"Waiting for %d IRQ commands to complete (tgt %p)",
tgt->irq_cmd_count, tgt);
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
while (tgt->irq_cmd_count != 0) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -868,9 +872,9 @@ void qlt_stop_phase2(struct qla_tgt *tgt)
tgt->tgt_stop = 0;
tgt->tgt_stopped = 1;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished",
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
tgt);
}
EXPORT_SYMBOL(qlt_stop_phase2);
@ -878,14 +882,14 @@ EXPORT_SYMBOL(qlt_stop_phase2);
/* Called from qlt_remove_target() -> qla2x00_remove_one() */
static void qlt_release(struct qla_tgt *tgt)
{
struct qla_hw_data *ha = tgt->ha;
scsi_qla_host_t *vha = tgt->vha;
if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
qlt_stop_phase2(tgt);
ha->tgt.qla_tgt = NULL;
vha->vha_tgt.qla_tgt = NULL;
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d,
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
"Release of tgt %p finished\n", tgt);
kfree(tgt);
@ -949,8 +953,8 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
return;
}
if (ha->tgt.qla_tgt != NULL)
ha->tgt.qla_tgt->notify_ack_expected++;
if (vha->vha_tgt.qla_tgt != NULL)
vha->vha_tgt.qla_tgt->notify_ack_expected++;
pkt->entry_type = NOTIFY_ACK_TYPE;
pkt->entry_count = 1;
@ -1054,7 +1058,7 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
/* Other bytes are zero */
}
ha->tgt.qla_tgt->abts_resp_expected++;
vha->vha_tgt.qla_tgt->abts_resp_expected++;
qla2x00_start_iocbs(vha, vha->req);
}
@ -1206,7 +1210,7 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
"qla_target(%d): task abort for non-existant session\n",
vha->vp_idx);
rc = qlt_sched_sess_work(ha->tgt.qla_tgt,
rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
if (rc != 0) {
qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
@ -2157,8 +2161,7 @@ static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd, void *ctio)
{
struct qla_tgt_srr_ctio *sc;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_srr_imm *imm;
tgt->ctio_srr_id++;
@ -2474,7 +2477,7 @@ static void qlt_do_work(struct work_struct *work)
struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
scsi_qla_host_t *vha = cmd->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_sess *sess = NULL;
struct atio_from_isp *atio = &cmd->atio;
unsigned char *cdb;
@ -2507,10 +2510,10 @@ static void qlt_do_work(struct work_struct *work)
goto out_term;
}
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
sess = qlt_make_local_sess(vha, s_id);
/* sess has an extra creation ref. */
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
if (!sess)
goto out_term;
@ -2576,8 +2579,7 @@ out_term:
static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
struct atio_from_isp *atio)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_cmd *cmd;
if (unlikely(tgt->tgt_stop)) {
@ -2597,7 +2599,7 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
memcpy(&cmd->atio, atio, sizeof(*atio));
cmd->state = QLA_TGT_STATE_NEW;
cmd->tgt = ha->tgt.qla_tgt;
cmd->tgt = vha->vha_tgt.qla_tgt;
cmd->vha = vha;
INIT_WORK(&cmd->work, qlt_do_work);
@ -2723,7 +2725,7 @@ static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
uint32_t lun, unpacked_lun;
int lun_size, fn;
tgt = ha->tgt.qla_tgt;
tgt = vha->vha_tgt.qla_tgt;
lun = a->u.isp24.fcp_cmnd.lun;
lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
@ -2797,7 +2799,7 @@ static int qlt_abort_task(struct scsi_qla_host *vha,
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
"qla_target(%d): task abort for unexisting "
"session\n", vha->vp_idx);
return qlt_sched_sess_work(ha->tgt.qla_tgt,
return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
}
@ -2810,7 +2812,6 @@ static int qlt_abort_task(struct scsi_qla_host *vha,
static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_hw_data *ha = vha->hw;
int res = 0;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
@ -2828,7 +2829,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
case ELS_PDISC:
case ELS_ADISC:
{
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
if (tgt->link_reinit_iocb_pending) {
qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
0, 0, 0, 0, 0, 0);
@ -3202,8 +3203,7 @@ static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_tgt_srr_imm *imm;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_srr_ctio *sctio;
tgt->imm_srr_id++;
@ -3313,7 +3313,7 @@ static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
case IMM_NTFY_LIP_LINK_REINIT:
{
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
"qla_target(%d): LINK REINIT (loop %#x, "
"subcode %x)\n", vha->vp_idx,
@ -3489,7 +3489,7 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
struct atio_from_isp *atio)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
int rc;
if (unlikely(tgt == NULL)) {
@ -3591,7 +3591,7 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
if (unlikely(tgt == NULL)) {
ql_dbg(ql_dbg_tgt, vha, 0xe05d,
@ -3794,7 +3794,7 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
uint16_t *mailbox)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
int login_code;
ql_dbg(ql_dbg_tgt, vha, 0xe039,
@ -3924,14 +3924,14 @@ static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
uint8_t *s_id)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt_sess *sess = NULL;
fc_port_t *fcport = NULL;
int rc, global_resets;
uint16_t loop_id = 0;
retry:
global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
global_resets =
atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
if (rc != 0) {
@ -3958,12 +3958,13 @@ retry:
return NULL;
if (global_resets !=
atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
"qla_target(%d): global reset during session discovery "
"(counter was %d, new %d), retrying", vha->vp_idx,
global_resets,
atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
atomic_read(&vha->vha_tgt.
qla_tgt->tgt_global_resets_count));
goto retry;
}
@ -3998,10 +3999,10 @@ static void qlt_abort_work(struct qla_tgt *tgt,
if (!sess) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
sess = qlt_make_local_sess(vha, s_id);
/* sess has got an extra creation ref */
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!sess)
@ -4052,10 +4053,10 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
if (!sess) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mutex_lock(&ha->tgt.tgt_mutex);
mutex_lock(&vha->vha_tgt.tgt_mutex);
sess = qlt_make_local_sess(vha, s_id);
/* sess has got an extra creation ref */
mutex_unlock(&ha->tgt.tgt_mutex);
mutex_unlock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!sess)
@ -4141,9 +4142,9 @@ int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
}
ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
"Registering target for host %ld(%p)", base_vha->host_no, ha);
"Registering target for host %ld(%p).\n", base_vha->host_no, ha);
BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL));
BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
if (!tgt) {
@ -4171,7 +4172,7 @@ int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
atomic_set(&tgt->tgt_global_resets_count, 0);
ha->tgt.qla_tgt = tgt;
base_vha->vha_tgt.qla_tgt = tgt;
ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
"qla_target(%d): using 64 Bit PCI addressing",
@ -4192,16 +4193,16 @@ int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
/* Must be called under tgt_host_action_mutex */
int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
{
if (!ha->tgt.qla_tgt)
if (!vha->vha_tgt.qla_tgt)
return 0;
mutex_lock(&qla_tgt_mutex);
list_del(&ha->tgt.qla_tgt->tgt_list_entry);
list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
mutex_unlock(&qla_tgt_mutex);
ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
vha->host_no, ha);
qlt_release(ha->tgt.qla_tgt);
qlt_release(vha->vha_tgt.qla_tgt);
return 0;
}
@ -4235,8 +4236,9 @@ static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
* @callback: lport initialization callback for tcm_qla2xxx code
* @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
*/
int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
u64 npiv_wwpn, u64 npiv_wwnn,
int (*callback)(struct scsi_qla_host *, void *, u64, u64))
{
struct qla_tgt *tgt;
struct scsi_qla_host *vha;
@ -4255,14 +4257,11 @@ int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
if (!host)
continue;
if (ha->tgt.tgt_ops != NULL)
continue;
if (!(host->hostt->supported_mode & MODE_TARGET))
continue;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (host->active_mode & MODE_TARGET) {
if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
host->host_no);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -4276,24 +4275,18 @@ int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
" qla2xxx scsi_host\n");
continue;
}
qlt_lport_dump(vha, wwpn, b);
qlt_lport_dump(vha, phys_wwpn, b);
if (memcmp(vha->port_name, b, WWN_SIZE)) {
scsi_host_put(host);
continue;
}
/*
* Setup passed parameters ahead of invoking callback
*/
ha->tgt.tgt_ops = qla_tgt_ops;
ha->tgt.target_lport_ptr = target_lport_ptr;
rc = (*callback)(vha);
if (rc != 0) {
ha->tgt.tgt_ops = NULL;
ha->tgt.target_lport_ptr = NULL;
scsi_host_put(host);
}
mutex_unlock(&qla_tgt_mutex);
rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
if (rc != 0)
scsi_host_put(host);
return rc;
}
mutex_unlock(&qla_tgt_mutex);
@ -4314,7 +4307,7 @@ void qlt_lport_deregister(struct scsi_qla_host *vha)
/*
* Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
*/
ha->tgt.target_lport_ptr = NULL;
vha->vha_tgt.target_lport_ptr = NULL;
ha->tgt.tgt_ops = NULL;
/*
* Release the Scsi_Host reference for the underlying qla2xxx host
@ -4376,8 +4369,9 @@ void
qlt_enable_vha(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
if (!tgt) {
ql_dbg(ql_dbg_tgt, vha, 0xe069,
@ -4392,9 +4386,14 @@ qlt_enable_vha(struct scsi_qla_host *vha)
qlt_set_mode(vha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
qla2x00_wait_for_hba_online(vha);
if (vha->vp_idx) {
qla24xx_disable_vp(vha);
qla24xx_enable_vp(vha);
} else {
set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
qla2xxx_wake_dpc(base_vha);
qla2x00_wait_for_hba_online(base_vha);
}
}
EXPORT_SYMBOL(qlt_enable_vha);
@ -4407,7 +4406,7 @@ void
qlt_disable_vha(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = ha->tgt.qla_tgt;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
unsigned long flags;
if (!tgt) {
@ -4438,8 +4437,10 @@ qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
if (!qla_tgt_mode_enabled(vha))
return;
mutex_init(&ha->tgt.tgt_mutex);
mutex_init(&ha->tgt.tgt_host_action_mutex);
vha->vha_tgt.qla_tgt = NULL;
mutex_init(&vha->vha_tgt.tgt_mutex);
mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
qlt_clear_mode(vha);
@ -4450,6 +4451,8 @@ qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
* assigning the value appropriately.
*/
ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
qlt_add_target(ha, vha);
}
void
@ -4768,8 +4771,8 @@ qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
}
mutex_init(&ha->tgt.tgt_mutex);
mutex_init(&ha->tgt.tgt_host_action_mutex);
mutex_init(&base_vha->vha_tgt.tgt_mutex);
mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
qlt_clear_mode(base_vha);
}

4
drivers/scsi/qla2xxx/qla_target.h
View File

@ -932,8 +932,8 @@ void qlt_disable_vha(struct scsi_qla_host *);
*/
extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64,
int (*callback)(struct scsi_qla_host *), void *);
extern int qlt_lport_register(void *, u64, u64, u64,
int (*callback)(struct scsi_qla_host *, void *, u64, u64));
extern void qlt_lport_deregister(struct scsi_qla_host *);
extern void qlt_unreg_sess(struct qla_tgt_sess *);
extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);

182
drivers/scsi/qla2xxx/tcm_qla2xxx.c
View File

@ -53,16 +53,6 @@
struct workqueue_struct *tcm_qla2xxx_free_wq;
struct workqueue_struct *tcm_qla2xxx_cmd_wq;
static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
{
return 1;
}
static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
{
return 0;
}
/*
* Parse WWN.
* If strict, we require lower-case hex and colon separators to be sure
@ -174,7 +164,7 @@ static int tcm_qla2xxx_npiv_parse_wwn(
*wwnn = 0;
/* count may include a LF at end of string */
if (name[cnt-1] == '\n')
if (name[cnt-1] == '\n' || name[cnt-1] == 0)
cnt--;
/* validate we have enough characters for WWPN */
@ -777,6 +767,9 @@ static void tcm_qla2xxx_put_session(struct se_session *se_sess)
static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
{
if (!sess)
return;
assert_spin_locked(&sess->vha->hw->hardware_lock);
kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
}
@ -957,7 +950,6 @@ static ssize_t tcm_qla2xxx_tpg_store_enable(
struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
struct tcm_qla2xxx_lport, lport_wwn);
struct scsi_qla_host *vha = lport->qla_vha;
struct qla_hw_data *ha = vha->hw;
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
struct tcm_qla2xxx_tpg, se_tpg);
unsigned long op;
@ -977,12 +969,12 @@ static ssize_t tcm_qla2xxx_tpg_store_enable(
atomic_set(&tpg->lport_tpg_enabled, 1);
qlt_enable_vha(vha);
} else {
if (!ha->tgt.qla_tgt) {
pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
if (!vha->vha_tgt.qla_tgt) {
pr_err("struct qla_hw_data *vha->vha_tgt.qla_tgt is NULL\n");
return -ENODEV;
}
atomic_set(&tpg->lport_tpg_enabled, 0);
qlt_stop_phase1(ha->tgt.qla_tgt);
qlt_stop_phase1(vha->vha_tgt.qla_tgt);
}
return count;
@ -1011,7 +1003,7 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg(
if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
return ERR_PTR(-EINVAL);
if (!lport->qla_npiv_vp && (tpgt != 1)) {
if ((tpgt != 1)) {
pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
return ERR_PTR(-ENOSYS);
}
@ -1038,11 +1030,8 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg(
kfree(tpg);
return NULL;
}
/*
* Setup local TPG=1 pointer for non NPIV mode.
*/
if (lport->qla_npiv_vp == NULL)
lport->tpg_1 = tpg;
lport->tpg_1 = tpg;
return &tpg->se_tpg;
}
@ -1053,19 +1042,17 @@ static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
struct tcm_qla2xxx_tpg, se_tpg);
struct tcm_qla2xxx_lport *lport = tpg->lport;
struct scsi_qla_host *vha = lport->qla_vha;
struct qla_hw_data *ha = vha->hw;
/*
* Call into qla2x_target.c LLD logic to shutdown the active
* FC Nexuses and disable target mode operation for this qla_hw_data
*/
if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
qlt_stop_phase1(ha->tgt.qla_tgt);
if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
qlt_stop_phase1(vha->vha_tgt.qla_tgt);
core_tpg_deregister(se_tpg);
/*
* Clear local TPG=1 pointer for non NPIV mode.
*/
if (lport->qla_npiv_vp == NULL)
lport->tpg_1 = NULL;
kfree(tpg);
@ -1095,12 +1082,22 @@ static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
tpg->lport = lport;
tpg->lport_tpgt = tpgt;
/*
* By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
* NodeACLs
*/
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;
ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
if (ret < 0) {
kfree(tpg);
return NULL;
}
lport->tpg_1 = tpg;
return &tpg->se_tpg;
}
@ -1111,13 +1108,12 @@ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
scsi_qla_host_t *vha,
const uint8_t *s_id)
{
struct qla_hw_data *ha = vha->hw;
struct tcm_qla2xxx_lport *lport;
struct se_node_acl *se_nacl;
struct tcm_qla2xxx_nacl *nacl;
u32 key;
lport = ha->tgt.target_lport_ptr;
lport = vha->vha_tgt.target_lport_ptr;
if (!lport) {
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
dump_stack();
@ -1221,13 +1217,12 @@ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
scsi_qla_host_t *vha,
const uint16_t loop_id)
{
struct qla_hw_data *ha = vha->hw;
struct tcm_qla2xxx_lport *lport;
struct se_node_acl *se_nacl;
struct tcm_qla2xxx_nacl *nacl;
struct tcm_qla2xxx_fc_loopid *fc_loopid;
lport = ha->tgt.target_lport_ptr;
lport = vha->vha_tgt.target_lport_ptr;
if (!lport) {
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
dump_stack();
@ -1341,6 +1336,7 @@ static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
{
struct qla_tgt *tgt = sess->tgt;
struct qla_hw_data *ha = tgt->ha;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
struct se_session *se_sess;
struct se_node_acl *se_nacl;
struct tcm_qla2xxx_lport *lport;
@ -1357,7 +1353,7 @@ static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
se_nacl = se_sess->se_node_acl;
nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
lport = ha->tgt.target_lport_ptr;
lport = vha->vha_tgt.target_lport_ptr;
if (!lport) {
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
dump_stack();
@ -1391,7 +1387,7 @@ static int tcm_qla2xxx_check_initiator_node_acl(
unsigned char port_name[36];
unsigned long flags;
lport = ha->tgt.target_lport_ptr;
lport = vha->vha_tgt.target_lport_ptr;
if (!lport) {
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
dump_stack();
@ -1455,7 +1451,8 @@ static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
{
struct qla_tgt *tgt = sess->tgt;
struct qla_hw_data *ha = tgt->ha;
struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
struct tcm_qla2xxx_nacl, se_node_acl);
@ -1562,15 +1559,18 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
return 0;
}
static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
void *target_lport_ptr,
u64 npiv_wwpn, u64 npiv_wwnn)
{
struct qla_hw_data *ha = vha->hw;
struct tcm_qla2xxx_lport *lport;
struct tcm_qla2xxx_lport *lport =
(struct tcm_qla2xxx_lport *)target_lport_ptr;
/*
* Setup local pointer to vha, NPIV VP pointer (if present) and
* vha->tcm_lport pointer
* Setup tgt_ops, local pointer to vha and target_lport_ptr
*/
lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
ha->tgt.tgt_ops = &tcm_qla2xxx_template;
vha->vha_tgt.target_lport_ptr = target_lport_ptr;
lport->qla_vha = vha;
return 0;
@ -1602,8 +1602,8 @@ static struct se_wwn *tcm_qla2xxx_make_lport(
if (ret != 0)
goto out;
ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
tcm_qla2xxx_lport_register_cb, lport);
ret = qlt_lport_register(lport, wwpn, 0, 0,
tcm_qla2xxx_lport_register_cb);
if (ret != 0)
goto out_lport;
@ -1621,7 +1621,6 @@ static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
struct tcm_qla2xxx_lport *lport = container_of(wwn,
struct tcm_qla2xxx_lport, lport_wwn);
struct scsi_qla_host *vha = lport->qla_vha;
struct qla_hw_data *ha = vha->hw;
struct se_node_acl *node;
u32 key = 0;
@ -1630,8 +1629,8 @@ static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
* shutdown of struct qla_tgt after the call to
* qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
*/
if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
qlt_stop_phase2(ha->tgt.qla_tgt);
if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
qlt_stop_phase2(vha->vha_tgt.qla_tgt);
qlt_lport_deregister(vha);
@ -1642,17 +1641,70 @@ static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
kfree(lport);
}
static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
void *target_lport_ptr,
u64 npiv_wwpn, u64 npiv_wwnn)
{
struct fc_vport *vport;
struct Scsi_Host *sh = base_vha->host;
struct scsi_qla_host *npiv_vha;
struct tcm_qla2xxx_lport *lport =
(struct tcm_qla2xxx_lport *)target_lport_ptr;
struct fc_vport_identifiers vport_id;
if (!qla_tgt_mode_enabled(base_vha)) {
pr_err("qla2xxx base_vha not enabled for target mode\n");
return -EPERM;
}
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;
vport = fc_vport_create(sh, 0, &vport_id);
if (!vport) {
pr_err("fc_vport_create failed for qla2xxx_npiv\n");
return -ENODEV;
}
/*
* Setup local pointer to NPIV vhba + target_lport_ptr
*/
npiv_vha = (struct scsi_qla_host *)vport->dd_data;
npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
lport->qla_vha = npiv_vha;
scsi_host_get(npiv_vha->host);
return 0;
}
static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
struct target_fabric_configfs *tf,
struct config_group *group,
const char *name)
{
struct tcm_qla2xxx_lport *lport;
u64 npiv_wwpn, npiv_wwnn;
u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
char *p, tmp[128];
int ret;
if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
&npiv_wwpn, &npiv_wwnn) < 0)
snprintf(tmp, 128, "%s", name);
p = strchr(tmp, '@');
if (!p) {
pr_err("Unable to locate NPIV '@' seperator\n");
return ERR_PTR(-EINVAL);
}
*p++ = '\0';
if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
return ERR_PTR(-EINVAL);
if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
&npiv_wwpn, &npiv_wwnn) < 0)
return ERR_PTR(-EINVAL);
lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
@ -1666,12 +1718,19 @@ static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
/* FIXME: tcm_qla2xxx_npiv_make_lport */
ret = -ENOSYS;
ret = tcm_qla2xxx_init_lport(lport);
if (ret != 0)
goto out;
ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
tcm_qla2xxx_lport_register_npiv_cb);
if (ret != 0)
goto out_lport;
return &lport->lport_wwn;
out_lport:
vfree(lport->lport_loopid_map);
btree_destroy32(&lport->lport_fcport_map);
out:
kfree(lport);
return ERR_PTR(ret);
@ -1681,14 +1740,16 @@ static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
{
struct tcm_qla2xxx_lport *lport = container_of(wwn,
struct tcm_qla2xxx_lport, lport_wwn);
struct scsi_qla_host *vha = lport->qla_vha;
struct Scsi_Host *sh = vha->host;
/*
* Notify libfc that we want to release the lport->npiv_vport
*/
fc_vport_terminate(lport->npiv_vport);
struct scsi_qla_host *npiv_vha = lport->qla_vha;
struct qla_hw_data *ha = npiv_vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
scsi_host_put(sh);
scsi_host_put(npiv_vha->host);
/*
* Notify libfc that we want to release the vha->fc_vport
*/
fc_vport_terminate(npiv_vha->fc_vport);
scsi_host_put(base_vha->host);
kfree(lport);
}
@ -1769,14 +1830,16 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
.tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
.tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
.tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
.tpg_check_demo_mode = tcm_qla2xxx_check_false,
.tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
.tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
.tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
.tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
.tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
.tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
.tpg_check_prod_mode_write_protect =
tcm_qla2xxx_check_prod_write_protect,
.tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
.tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
.check_stop_free = tcm_qla2xxx_check_stop_free,
.release_cmd = tcm_qla2xxx_release_cmd,
.put_session = tcm_qla2xxx_put_session,
.shutdown_session = tcm_qla2xxx_shutdown_session,
@ -1871,7 +1934,8 @@ static int tcm_qla2xxx_register_configfs(void)
* Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
*/
npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL;
npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs =
tcm_qla2xxx_tpg_attrs;
npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;

4
drivers/scsi/qla2xxx/tcm_qla2xxx.h
View File

@ -70,12 +70,8 @@ struct tcm_qla2xxx_lport {
struct tcm_qla2xxx_fc_loopid *lport_loopid_map;
/* Pointer to struct scsi_qla_host from qla2xxx LLD */
struct scsi_qla_host *qla_vha;
/* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */
struct scsi_qla_host *qla_npiv_vp;
/* Pointer to struct qla_tgt pointer */
struct qla_tgt lport_qla_tgt;
/* Pointer to struct fc_vport for NPIV vport from libfc */
struct fc_vport *npiv_vport;
/* Pointer to TPG=1 for non NPIV mode */
struct tcm_qla2xxx_tpg *tpg_1;
/* Returned by tcm_qla2xxx_make_lport() */

2
drivers/target/Kconfig
View File

@ -3,6 +3,7 @@ menuconfig TARGET_CORE
tristate "Generic Target Core Mod (TCM) and ConfigFS Infrastructure"
depends on SCSI && BLOCK
select CONFIGFS_FS
select CRC_T10DIF
default n
help
Say Y or M here to enable the TCM Storage Engine and ConfigFS enabled
@ -13,6 +14,7 @@ if TARGET_CORE
config TCM_IBLOCK
tristate "TCM/IBLOCK Subsystem Plugin for Linux/BLOCK"
select BLK_DEV_INTEGRITY
help
Say Y here to enable the TCM/IBLOCK subsystem plugin for non-buffered
access to Linux/Block devices using BIO

48
drivers/target/iscsi/iscsi_target.c
View File

@ -52,7 +52,7 @@
static LIST_HEAD(g_tiqn_list);
static LIST_HEAD(g_np_list);
static DEFINE_SPINLOCK(tiqn_lock);
static DEFINE_SPINLOCK(np_lock);
static DEFINE_MUTEX(np_lock);
static struct idr tiqn_idr;
struct idr sess_idr;
@ -307,6 +307,9 @@ bool iscsit_check_np_match(
return false;
}
/*
* Called with mutex np_lock held
*/
static struct iscsi_np *iscsit_get_np(
struct __kernel_sockaddr_storage *sockaddr,
int network_transport)
@ -314,11 +317,10 @@ static struct iscsi_np *iscsit_get_np(
struct iscsi_np *np;
bool match;
spin_lock_bh(&np_lock);
list_for_each_entry(np, &g_np_list, np_list) {
spin_lock(&np->np_thread_lock);
spin_lock_bh(&np->np_thread_lock);
if (np->np_thread_state != ISCSI_NP_THREAD_ACTIVE) {
spin_unlock(&np->np_thread_lock);
spin_unlock_bh(&np->np_thread_lock);
continue;
}
@ -330,13 +332,11 @@ static struct iscsi_np *iscsit_get_np(
* while iscsi_tpg_add_network_portal() is called.
*/
np->np_exports++;
spin_unlock(&np->np_thread_lock);
spin_unlock_bh(&np_lock);
spin_unlock_bh(&np->np_thread_lock);
return np;
}
spin_unlock(&np->np_thread_lock);
spin_unlock_bh(&np->np_thread_lock);
}
spin_unlock_bh(&np_lock);
return NULL;
}
@ -350,16 +350,22 @@ struct iscsi_np *iscsit_add_np(
struct sockaddr_in6 *sock_in6;
struct iscsi_np *np;
int ret;
mutex_lock(&np_lock);
/*
* Locate the existing struct iscsi_np if already active..
*/
np = iscsit_get_np(sockaddr, network_transport);
if (np)
if (np) {
mutex_unlock(&np_lock);
return np;
}
np = kzalloc(sizeof(struct iscsi_np), GFP_KERNEL);
if (!np) {
pr_err("Unable to allocate memory for struct iscsi_np\n");
mutex_unlock(&np_lock);
return ERR_PTR(-ENOMEM);
}
@ -382,6 +388,7 @@ struct iscsi_np *iscsit_add_np(
ret = iscsi_target_setup_login_socket(np, sockaddr);
if (ret != 0) {
kfree(np);
mutex_unlock(&np_lock);
return ERR_PTR(ret);
}
@ -390,6 +397,7 @@ struct iscsi_np *iscsit_add_np(
pr_err("Unable to create kthread: iscsi_np\n");
ret = PTR_ERR(np->np_thread);
kfree(np);
mutex_unlock(&np_lock);
return ERR_PTR(ret);
}
/*
@ -400,10 +408,10 @@ struct iscsi_np *iscsit_add_np(
* point because iscsi_np has not been added to g_np_list yet.
*/
np->np_exports = 1;
np->np_thread_state = ISCSI_NP_THREAD_ACTIVE;
spin_lock_bh(&np_lock);
list_add_tail(&np->np_list, &g_np_list);
spin_unlock_bh(&np_lock);
mutex_unlock(&np_lock);
pr_debug("CORE[0] - Added Network Portal: %s:%hu on %s\n",
np->np_ip, np->np_port, np->np_transport->name);
@ -470,9 +478,9 @@ int iscsit_del_np(struct iscsi_np *np)
np->np_transport->iscsit_free_np(np);
spin_lock_bh(&np_lock);
mutex_lock(&np_lock);
list_del(&np->np_list);
spin_unlock_bh(&np_lock);
mutex_unlock(&np_lock);
pr_debug("CORE[0] - Removed Network Portal: %s:%hu on %s\n",
np->np_ip, np->np_port, np->np_transport->name);
@ -622,7 +630,7 @@ static int iscsit_add_reject(
{
struct iscsi_cmd *cmd;
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
return -1;
@ -2475,7 +2483,7 @@ static void iscsit_build_conn_drop_async_message(struct iscsi_conn *conn)
if (!conn_p)
return;
cmd = iscsit_allocate_cmd(conn_p, GFP_ATOMIC);
cmd = iscsit_allocate_cmd(conn_p, TASK_RUNNING);
if (!cmd) {
iscsit_dec_conn_usage_count(conn_p);
return;
@ -3951,7 +3959,7 @@ static int iscsi_target_rx_opcode(struct iscsi_conn *conn, unsigned char *buf)
switch (hdr->opcode & ISCSI_OPCODE_MASK) {
case ISCSI_OP_SCSI_CMD:
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
goto reject;
@ -3963,28 +3971,28 @@ static int iscsi_target_rx_opcode(struct iscsi_conn *conn, unsigned char *buf)
case ISCSI_OP_NOOP_OUT:
cmd = NULL;
if (hdr->ttt == cpu_to_be32(0xFFFFFFFF)) {
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
goto reject;
}
ret = iscsit_handle_nop_out(conn, cmd, buf);
break;
case ISCSI_OP_SCSI_TMFUNC:
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
goto reject;
ret = iscsit_handle_task_mgt_cmd(conn, cmd, buf);
break;
case ISCSI_OP_TEXT:
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
goto reject;
ret = iscsit_handle_text_cmd(conn, cmd, buf);
break;
case ISCSI_OP_LOGOUT:
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd)
goto reject;

2
drivers/target/iscsi/iscsi_target_nego.c
View File

@ -1192,7 +1192,7 @@ get_target:
*/
alloc_tags:
tag_num = max_t(u32, ISCSIT_MIN_TAGS, queue_depth);
tag_num += (tag_num / 2) + ISCSIT_EXTRA_TAGS;
tag_num = (tag_num * 2) + ISCSIT_EXTRA_TAGS;
tag_size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size;
ret = transport_alloc_session_tags(sess->se_sess, tag_num, tag_size);

9
drivers/target/iscsi/iscsi_target_util.c
View File

@ -152,13 +152,16 @@ void iscsit_free_r2ts_from_list(struct iscsi_cmd *cmd)
* May be called from software interrupt (timer) context for allocating
* iSCSI NopINs.
*/
struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask)
struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, int state)
{
struct iscsi_cmd *cmd;
struct se_session *se_sess = conn->sess->se_sess;
int size, tag;
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, gfp_mask);
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, state);
if (tag < 0)
return NULL;
size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size;
cmd = (struct iscsi_cmd *)(se_sess->sess_cmd_map + (tag * size));
memset(cmd, 0, size);
@ -926,7 +929,7 @@ static int iscsit_add_nopin(struct iscsi_conn *conn, int want_response)
u8 state;
struct iscsi_cmd *cmd;
cmd = iscsit_allocate_cmd(conn, GFP_ATOMIC);
cmd = iscsit_allocate_cmd(conn, TASK_RUNNING);
if (!cmd)
return -1;

2
drivers/target/iscsi/iscsi_target_util.h
View File

@ -9,7 +9,7 @@ extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsi_cmd *);
extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *);
extern void iscsit_free_r2ts_from_list(struct iscsi_cmd *);
extern struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *, gfp_t);
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int);
extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32);
extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);

20
drivers/target/loopback/tcm_loop.c
View File

@ -217,7 +217,8 @@ static void tcm_loop_submission_work(struct work_struct *work)
scsi_bufflen(sc), tcm_loop_sam_attr(sc),
sc->sc_data_direction, 0,
scsi_sglist(sc), scsi_sg_count(sc),
sgl_bidi, sgl_bidi_count);
sgl_bidi, sgl_bidi_count,
scsi_prot_sglist(sc), scsi_prot_sg_count(sc));
if (rc < 0) {
set_host_byte(sc, DID_NO_CONNECT);
goto out_done;
@ -462,7 +463,7 @@ static int tcm_loop_driver_probe(struct device *dev)
{
struct tcm_loop_hba *tl_hba;
struct Scsi_Host *sh;
int error;
int error, host_prot;
tl_hba = to_tcm_loop_hba(dev);
@ -486,6 +487,13 @@ static int tcm_loop_driver_probe(struct device *dev)
sh->max_channel = 0;
sh->max_cmd_len = TL_SCSI_MAX_CMD_LEN;
host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |
SHOST_DIX_TYPE2_PROTECTION | SHOST_DIX_TYPE3_PROTECTION;
scsi_host_set_prot(sh, host_prot);
scsi_host_set_guard(sh, SHOST_DIX_GUARD_CRC);
error = scsi_add_host(sh, &tl_hba->dev);
if (error) {
pr_err("%s: scsi_add_host failed\n", __func__);
@ -1228,7 +1236,7 @@ static struct configfs_attribute *tcm_loop_tpg_attrs[] = {
/* Start items for tcm_loop_naa_cit */
struct se_portal_group *tcm_loop_make_naa_tpg(
static struct se_portal_group *tcm_loop_make_naa_tpg(
struct se_wwn *wwn,
struct config_group *group,
const char *name)
@ -1273,7 +1281,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg(
return &tl_tpg->tl_se_tpg;
}
void tcm_loop_drop_naa_tpg(
static void tcm_loop_drop_naa_tpg(
struct se_portal_group *se_tpg)
{
struct se_wwn *wwn = se_tpg->se_tpg_wwn;
@ -1305,7 +1313,7 @@ void tcm_loop_drop_naa_tpg(
/* Start items for tcm_loop_cit */
struct se_wwn *tcm_loop_make_scsi_hba(
static struct se_wwn *tcm_loop_make_scsi_hba(
struct target_fabric_configfs *tf,
struct config_group *group,
const char *name)
@ -1375,7 +1383,7 @@ out:
return ERR_PTR(ret);
}
void tcm_loop_drop_scsi_hba(
static void tcm_loop_drop_scsi_hba(
struct se_wwn *wwn)
{
struct tcm_loop_hba *tl_hba = container_of(wwn,

560
drivers/target/target_core_alua.c
View File

@ -41,11 +41,14 @@
#include "target_core_alua.h"
#include "target_core_ua.h"
static sense_reason_t core_alua_check_transition(int state, int *primary);
static sense_reason_t core_alua_check_transition(int state, int valid,
int *primary);
static int core_alua_set_tg_pt_secondary_state(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port, int explicit, int offline);
static char *core_alua_dump_state(int state);
static u16 alua_lu_gps_counter;
static u32 alua_lu_gps_count;
@ -54,6 +57,86 @@ static LIST_HEAD(lu_gps_list);
struct t10_alua_lu_gp *default_lu_gp;
/*
* REPORT REFERRALS
*
* See sbc3r35 section 5.23
*/
sense_reason_t
target_emulate_report_referrals(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct t10_alua_lba_map *map;
struct t10_alua_lba_map_member *map_mem;
unsigned char *buf;
u32 rd_len = 0, off;
if (cmd->data_length < 4) {
pr_warn("REPORT REFERRALS allocation length %u too"
" small\n", cmd->data_length);
return TCM_INVALID_CDB_FIELD;
}
buf = transport_kmap_data_sg(cmd);
if (!buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
off = 4;
spin_lock(&dev->t10_alua.lba_map_lock);
if (list_empty(&dev->t10_alua.lba_map_list)) {
spin_unlock(&dev->t10_alua.lba_map_lock);
transport_kunmap_data_sg(cmd);
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
list_for_each_entry(map, &dev->t10_alua.lba_map_list,
lba_map_list) {
int desc_num = off + 3;
int pg_num;
off += 4;
if (cmd->data_length > off)
put_unaligned_be64(map->lba_map_first_lba, &buf[off]);
off += 8;
if (cmd->data_length > off)
put_unaligned_be64(map->lba_map_last_lba, &buf[off]);
off += 8;
rd_len += 20;
pg_num = 0;
list_for_each_entry(map_mem, &map->lba_map_mem_list,
lba_map_mem_list) {
int alua_state = map_mem->lba_map_mem_alua_state;
int alua_pg_id = map_mem->lba_map_mem_alua_pg_id;
if (cmd->data_length > off)
buf[off] = alua_state & 0x0f;
off += 2;
if (cmd->data_length > off)
buf[off] = (alua_pg_id >> 8) & 0xff;
off++;
if (cmd->data_length > off)
buf[off] = (alua_pg_id & 0xff);
off++;
rd_len += 4;
pg_num++;
}
if (cmd->data_length > desc_num)
buf[desc_num] = pg_num;
}
spin_unlock(&dev->t10_alua.lba_map_lock);
/*
* Set the RETURN DATA LENGTH set in the header of the DataIN Payload
*/
put_unaligned_be16(rd_len, &buf[2]);
transport_kunmap_data_sg(cmd);
target_complete_cmd(cmd, GOOD);
return 0;
}
/*
* REPORT_TARGET_PORT_GROUPS
*
@ -210,7 +293,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
unsigned char *ptr;
sense_reason_t rc = TCM_NO_SENSE;
u32 len = 4; /* Skip over RESERVED area in header */
int alua_access_state, primary = 0;
int alua_access_state, primary = 0, valid_states;
u16 tg_pt_id, rtpi;
if (!l_port)
@ -252,6 +335,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
valid_states = l_tg_pt_gp->tg_pt_gp_alua_supported_states;
ptr = &buf[4]; /* Skip over RESERVED area in header */
@ -263,7 +347,8 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
* the state is a primary or secondary target port asymmetric
* access state.
*/
rc = core_alua_check_transition(alua_access_state, &primary);
rc = core_alua_check_transition(alua_access_state,
valid_states, &primary);
if (rc) {
/*
* If the SET TARGET PORT GROUPS attempts to establish
@ -386,6 +471,81 @@ static inline int core_alua_state_nonoptimized(
return 0;
}
static inline int core_alua_state_lba_dependent(
struct se_cmd *cmd,
struct t10_alua_tg_pt_gp *tg_pt_gp,
u8 *alua_ascq)
{
struct se_device *dev = cmd->se_dev;
u64 segment_size, segment_mult, sectors, lba;
/* Only need to check for cdb actually containing LBAs */
if (!(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB))
return 0;
spin_lock(&dev->t10_alua.lba_map_lock);
segment_size = dev->t10_alua.lba_map_segment_size;
segment_mult = dev->t10_alua.lba_map_segment_multiplier;
sectors = cmd->data_length / dev->dev_attrib.block_size;
lba = cmd->t_task_lba;
while (lba < cmd->t_task_lba + sectors) {
struct t10_alua_lba_map *cur_map = NULL, *map;
struct t10_alua_lba_map_member *map_mem;
list_for_each_entry(map, &dev->t10_alua.lba_map_list,
lba_map_list) {
u64 start_lba, last_lba;
u64 first_lba = map->lba_map_first_lba;
if (segment_mult) {
u64 tmp = lba;
start_lba = sector_div(tmp, segment_size * segment_mult);
last_lba = first_lba + segment_size - 1;
if (start_lba >= first_lba &&
start_lba <= last_lba) {
lba += segment_size;
cur_map = map;
break;
}
} else {
last_lba = map->lba_map_last_lba;
if (lba >= first_lba && lba <= last_lba) {
lba = last_lba + 1;
cur_map = map;
break;
}
}
}
if (!cur_map) {
spin_unlock(&dev->t10_alua.lba_map_lock);
*alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE;
return 1;
}
list_for_each_entry(map_mem, &cur_map->lba_map_mem_list,
lba_map_mem_list) {
if (map_mem->lba_map_mem_alua_pg_id !=
tg_pt_gp->tg_pt_gp_id)
continue;
switch(map_mem->lba_map_mem_alua_state) {
case ALUA_ACCESS_STATE_STANDBY:
spin_unlock(&dev->t10_alua.lba_map_lock);
*alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY;
return 1;
case ALUA_ACCESS_STATE_UNAVAILABLE:
spin_unlock(&dev->t10_alua.lba_map_lock);
*alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE;
return 1;
default:
break;
}
}
}
spin_unlock(&dev->t10_alua.lba_map_lock);
return 0;
}
static inline int core_alua_state_standby(
struct se_cmd *cmd,
unsigned char *cdb,
@ -583,6 +743,9 @@ target_alua_state_check(struct se_cmd *cmd)
case ALUA_ACCESS_STATE_TRANSITION:
ret = core_alua_state_transition(cmd, cdb, &alua_ascq);
break;
case ALUA_ACCESS_STATE_LBA_DEPENDENT:
ret = core_alua_state_lba_dependent(cmd, tg_pt_gp, &alua_ascq);
break;
/*
* OFFLINE is a secondary ALUA target port group access state, that is
* handled above with struct se_port->sep_tg_pt_secondary_offline=1
@ -618,17 +781,36 @@ out:
* Check implicit and explicit ALUA state change request.
*/
static sense_reason_t
core_alua_check_transition(int state, int *primary)
core_alua_check_transition(int state, int valid, int *primary)
{
/*
* OPTIMIZED, NON-OPTIMIZED, STANDBY and UNAVAILABLE are
* defined as primary target port asymmetric access states.
*/
switch (state) {
case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
if (!(valid & ALUA_AO_SUP))
goto not_supported;
*primary = 1;
break;
case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
if (!(valid & ALUA_AN_SUP))
goto not_supported;
*primary = 1;
break;
case ALUA_ACCESS_STATE_STANDBY:
if (!(valid & ALUA_S_SUP))
goto not_supported;
*primary = 1;
break;
case ALUA_ACCESS_STATE_UNAVAILABLE:
/*
* OPTIMIZED, NON-OPTIMIZED, STANDBY and UNAVAILABLE are
* defined as primary target port asymmetric access states.
*/
if (!(valid & ALUA_U_SUP))
goto not_supported;
*primary = 1;
break;
case ALUA_ACCESS_STATE_LBA_DEPENDENT:
if (!(valid & ALUA_LBD_SUP))
goto not_supported;
*primary = 1;
break;
case ALUA_ACCESS_STATE_OFFLINE:
@ -636,14 +818,27 @@ core_alua_check_transition(int state, int *primary)
* OFFLINE state is defined as a secondary target port
* asymmetric access state.
*/
if (!(valid & ALUA_O_SUP))
goto not_supported;
*primary = 0;
break;
case ALUA_ACCESS_STATE_TRANSITION:
/*
* Transitioning is set internally, and
* cannot be selected manually.
*/
goto not_supported;
default:
pr_err("Unknown ALUA access state: 0x%02x\n", state);
return TCM_INVALID_PARAMETER_LIST;
}
return 0;
not_supported:
pr_err("ALUA access state %s not supported",
core_alua_dump_state(state));
return TCM_INVALID_PARAMETER_LIST;
}
static char *core_alua_dump_state(int state)
@ -653,12 +848,16 @@ static char *core_alua_dump_state(int state)
return "Active/Optimized";
case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
return "Active/NonOptimized";
case ALUA_ACCESS_STATE_LBA_DEPENDENT:
return "LBA Dependent";
case ALUA_ACCESS_STATE_STANDBY:
return "Standby";
case ALUA_ACCESS_STATE_UNAVAILABLE:
return "Unavailable";
case ALUA_ACCESS_STATE_OFFLINE:
return "Offline";
case ALUA_ACCESS_STATE_TRANSITION:
return "Transitioning";
default:
return "Unknown";
}
@ -735,58 +934,49 @@ static int core_alua_write_tpg_metadata(
* Called with tg_pt_gp->tg_pt_gp_md_mutex held
*/
static int core_alua_update_tpg_primary_metadata(
struct t10_alua_tg_pt_gp *tg_pt_gp,
int primary_state,
unsigned char *md_buf)
struct t10_alua_tg_pt_gp *tg_pt_gp)
{
unsigned char *md_buf;
struct t10_wwn *wwn = &tg_pt_gp->tg_pt_gp_dev->t10_wwn;
char path[ALUA_METADATA_PATH_LEN];
int len;
int len, rc;
md_buf = kzalloc(ALUA_MD_BUF_LEN, GFP_KERNEL);
if (!md_buf) {
pr_err("Unable to allocate buf for ALUA metadata\n");
return -ENOMEM;
}
memset(path, 0, ALUA_METADATA_PATH_LEN);
len = snprintf(md_buf, tg_pt_gp->tg_pt_gp_md_buf_len,
len = snprintf(md_buf, ALUA_MD_BUF_LEN,
"tg_pt_gp_id=%hu\n"
"alua_access_state=0x%02x\n"
"alua_access_status=0x%02x\n",
tg_pt_gp->tg_pt_gp_id, primary_state,
tg_pt_gp->tg_pt_gp_id,
tg_pt_gp->tg_pt_gp_alua_pending_state,
tg_pt_gp->tg_pt_gp_alua_access_status);
snprintf(path, ALUA_METADATA_PATH_LEN,
"/var/target/alua/tpgs_%s/%s", &wwn->unit_serial[0],
config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item));
return core_alua_write_tpg_metadata(path, md_buf, len);
rc = core_alua_write_tpg_metadata(path, md_buf, len);
kfree(md_buf);
return rc;
}
static int core_alua_do_transition_tg_pt(
struct t10_alua_tg_pt_gp *tg_pt_gp,
struct se_port *l_port,
struct se_node_acl *nacl,
unsigned char *md_buf,
int new_state,
int explicit)
static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
{
struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(work,
struct t10_alua_tg_pt_gp, tg_pt_gp_transition_work.work);
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
struct se_dev_entry *se_deve;
struct se_lun_acl *lacl;
struct se_port *port;
struct t10_alua_tg_pt_gp_member *mem;
int old_state = 0;
/*
* Save the old primary ALUA access state, and set the current state
* to ALUA_ACCESS_STATE_TRANSITION.
*/
old_state = atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state);
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
ALUA_ACCESS_STATE_TRANSITION);
tg_pt_gp->tg_pt_gp_alua_access_status = (explicit) ?
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
/*
* Check for the optional ALUA primary state transition delay
*/
if (tg_pt_gp->tg_pt_gp_trans_delay_msecs != 0)
msleep_interruptible(tg_pt_gp->tg_pt_gp_trans_delay_msecs);
bool explicit = (tg_pt_gp->tg_pt_gp_alua_access_status ==
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry(mem, &tg_pt_gp->tg_pt_gp_mem_list,
@ -821,9 +1011,12 @@ static int core_alua_do_transition_tg_pt(
if (!lacl)
continue;
if (explicit &&
(nacl != NULL) && (nacl == lacl->se_lun_nacl) &&
(l_port != NULL) && (l_port == port))
if ((tg_pt_gp->tg_pt_gp_alua_access_status ==
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
(tg_pt_gp->tg_pt_gp_alua_nacl != NULL) &&
(tg_pt_gp->tg_pt_gp_alua_nacl == lacl->se_lun_nacl) &&
(tg_pt_gp->tg_pt_gp_alua_port != NULL) &&
(tg_pt_gp->tg_pt_gp_alua_port == port))
continue;
core_scsi3_ua_allocate(lacl->se_lun_nacl,
@ -851,20 +1044,102 @@ static int core_alua_do_transition_tg_pt(
*/
if (tg_pt_gp->tg_pt_gp_write_metadata) {
mutex_lock(&tg_pt_gp->tg_pt_gp_md_mutex);
core_alua_update_tpg_primary_metadata(tg_pt_gp,
new_state, md_buf);
core_alua_update_tpg_primary_metadata(tg_pt_gp);
mutex_unlock(&tg_pt_gp->tg_pt_gp_md_mutex);
}
/*
* Set the current primary ALUA access state to the requested new state
*/
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state, new_state);
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
tg_pt_gp->tg_pt_gp_alua_pending_state);
pr_debug("Successful %s ALUA transition TG PT Group: %s ID: %hu"
" from primary access state %s to %s\n", (explicit) ? "explicit" :
"implicit", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
tg_pt_gp->tg_pt_gp_id, core_alua_dump_state(old_state),
core_alua_dump_state(new_state));
tg_pt_gp->tg_pt_gp_id,
core_alua_dump_state(tg_pt_gp->tg_pt_gp_alua_previous_state),
core_alua_dump_state(tg_pt_gp->tg_pt_gp_alua_pending_state));
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_dec();
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
if (tg_pt_gp->tg_pt_gp_transition_complete)
complete(tg_pt_gp->tg_pt_gp_transition_complete);
}
static int core_alua_do_transition_tg_pt(
struct t10_alua_tg_pt_gp *tg_pt_gp,
int new_state,
int explicit)
{
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
DECLARE_COMPLETION_ONSTACK(wait);
/* Nothing to be done here */
if (atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) == new_state)
return 0;
if (new_state == ALUA_ACCESS_STATE_TRANSITION)
return -EAGAIN;
/*
* Flush any pending transitions
*/
if (!explicit && tg_pt_gp->tg_pt_gp_implicit_trans_secs &&
atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) ==
ALUA_ACCESS_STATE_TRANSITION) {
/* Just in case */
tg_pt_gp->tg_pt_gp_alua_pending_state = new_state;
tg_pt_gp->tg_pt_gp_transition_complete = &wait;
flush_delayed_work(&tg_pt_gp->tg_pt_gp_transition_work);
wait_for_completion(&wait);
tg_pt_gp->tg_pt_gp_transition_complete = NULL;
return 0;
}
/*
* Save the old primary ALUA access state, and set the current state
* to ALUA_ACCESS_STATE_TRANSITION.
*/
tg_pt_gp->tg_pt_gp_alua_previous_state =
atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state);
tg_pt_gp->tg_pt_gp_alua_pending_state = new_state;
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
ALUA_ACCESS_STATE_TRANSITION);
tg_pt_gp->tg_pt_gp_alua_access_status = (explicit) ?
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
/*
* Check for the optional ALUA primary state transition delay
*/
if (tg_pt_gp->tg_pt_gp_trans_delay_msecs != 0)
msleep_interruptible(tg_pt_gp->tg_pt_gp_trans_delay_msecs);
/*
* Take a reference for workqueue item
*/
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_inc();
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
if (!explicit && tg_pt_gp->tg_pt_gp_implicit_trans_secs) {
unsigned long transition_tmo;
transition_tmo = tg_pt_gp->tg_pt_gp_implicit_trans_secs * HZ;
queue_delayed_work(tg_pt_gp->tg_pt_gp_dev->tmr_wq,
&tg_pt_gp->tg_pt_gp_transition_work,
transition_tmo);
} else {
tg_pt_gp->tg_pt_gp_transition_complete = &wait;
queue_delayed_work(tg_pt_gp->tg_pt_gp_dev->tmr_wq,
&tg_pt_gp->tg_pt_gp_transition_work, 0);
wait_for_completion(&wait);
tg_pt_gp->tg_pt_gp_transition_complete = NULL;
}
return 0;
}
@ -878,23 +1153,15 @@ int core_alua_do_port_transition(
int explicit)
{
struct se_device *dev;
struct se_port *port;
struct se_node_acl *nacl;
struct t10_alua_lu_gp *lu_gp;
struct t10_alua_lu_gp_member *lu_gp_mem, *local_lu_gp_mem;
struct t10_alua_tg_pt_gp *tg_pt_gp;
unsigned char *md_buf;
int primary;
int primary, valid_states, rc = 0;
if (core_alua_check_transition(new_state, &primary) != 0)
valid_states = l_tg_pt_gp->tg_pt_gp_alua_supported_states;
if (core_alua_check_transition(new_state, valid_states, &primary) != 0)
return -EINVAL;
md_buf = kzalloc(l_tg_pt_gp->tg_pt_gp_md_buf_len, GFP_KERNEL);
if (!md_buf) {
pr_err("Unable to allocate buf for ALUA metadata\n");
return -ENOMEM;
}
local_lu_gp_mem = l_dev->dev_alua_lu_gp_mem;
spin_lock(&local_lu_gp_mem->lu_gp_mem_lock);
lu_gp = local_lu_gp_mem->lu_gp;
@ -911,12 +1178,13 @@ int core_alua_do_port_transition(
* core_alua_do_transition_tg_pt() will always return
* success.
*/
core_alua_do_transition_tg_pt(l_tg_pt_gp, l_port, l_nacl,
md_buf, new_state, explicit);
l_tg_pt_gp->tg_pt_gp_alua_port = l_port;
l_tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl;
rc = core_alua_do_transition_tg_pt(l_tg_pt_gp,
new_state, explicit);
atomic_dec(&lu_gp->lu_gp_ref_cnt);
smp_mb__after_atomic_dec();
kfree(md_buf);
return 0;
return rc;
}
/*
* For all other LU groups aside from 'default_lu_gp', walk all of
@ -951,11 +1219,11 @@ int core_alua_do_port_transition(
continue;
if (l_tg_pt_gp == tg_pt_gp) {
port = l_port;
nacl = l_nacl;
tg_pt_gp->tg_pt_gp_alua_port = l_port;
tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl;
} else {
port = NULL;
nacl = NULL;
tg_pt_gp->tg_pt_gp_alua_port = NULL;
tg_pt_gp->tg_pt_gp_alua_nacl = NULL;
}
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_inc();
@ -964,12 +1232,14 @@ int core_alua_do_port_transition(
* core_alua_do_transition_tg_pt() will always return
* success.
*/
core_alua_do_transition_tg_pt(tg_pt_gp, port,
nacl, md_buf, new_state, explicit);
rc = core_alua_do_transition_tg_pt(tg_pt_gp,
new_state, explicit);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_dec();
if (rc)
break;
}
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
@ -979,16 +1249,18 @@ int core_alua_do_port_transition(
}
spin_unlock(&lu_gp->lu_gp_lock);
pr_debug("Successfully processed LU Group: %s all ALUA TG PT"
" Group IDs: %hu %s transition to primary state: %s\n",
config_item_name(&lu_gp->lu_gp_group.cg_item),
l_tg_pt_gp->tg_pt_gp_id, (explicit) ? "explicit" : "implicit",
core_alua_dump_state(new_state));
if (!rc) {
pr_debug("Successfully processed LU Group: %s all ALUA TG PT"
" Group IDs: %hu %s transition to primary state: %s\n",
config_item_name(&lu_gp->lu_gp_group.cg_item),
l_tg_pt_gp->tg_pt_gp_id,
(explicit) ? "explicit" : "implicit",
core_alua_dump_state(new_state));
}
atomic_dec(&lu_gp->lu_gp_ref_cnt);
smp_mb__after_atomic_dec();
kfree(md_buf);
return 0;
return rc;
}
/*
@ -996,13 +1268,18 @@ int core_alua_do_port_transition(
*/
static int core_alua_update_tpg_secondary_metadata(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port,
unsigned char *md_buf,
u32 md_buf_len)
struct se_port *port)
{
unsigned char *md_buf;
struct se_portal_group *se_tpg = port->sep_tpg;
char path[ALUA_METADATA_PATH_LEN], wwn[ALUA_SECONDARY_METADATA_WWN_LEN];
int len;
int len, rc;
md_buf = kzalloc(ALUA_MD_BUF_LEN, GFP_KERNEL);
if (!md_buf) {
pr_err("Unable to allocate buf for ALUA metadata\n");
return -ENOMEM;
}
memset(path, 0, ALUA_METADATA_PATH_LEN);
memset(wwn, 0, ALUA_SECONDARY_METADATA_WWN_LEN);
@ -1014,7 +1291,7 @@ static int core_alua_update_tpg_secondary_metadata(
snprintf(wwn+len, ALUA_SECONDARY_METADATA_WWN_LEN-len, "+%hu",
se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
len = snprintf(md_buf, md_buf_len, "alua_tg_pt_offline=%d\n"
len = snprintf(md_buf, ALUA_MD_BUF_LEN, "alua_tg_pt_offline=%d\n"
"alua_tg_pt_status=0x%02x\n",
atomic_read(&port->sep_tg_pt_secondary_offline),
port->sep_tg_pt_secondary_stat);
@ -1023,7 +1300,10 @@ static int core_alua_update_tpg_secondary_metadata(
se_tpg->se_tpg_tfo->get_fabric_name(), wwn,
port->sep_lun->unpacked_lun);
return core_alua_write_tpg_metadata(path, md_buf, len);
rc = core_alua_write_tpg_metadata(path, md_buf, len);
kfree(md_buf);
return rc;
}
static int core_alua_set_tg_pt_secondary_state(
@ -1033,8 +1313,6 @@ static int core_alua_set_tg_pt_secondary_state(
int offline)
{
struct t10_alua_tg_pt_gp *tg_pt_gp;
unsigned char *md_buf;
u32 md_buf_len;
int trans_delay_msecs;
spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
@ -1055,7 +1333,6 @@ static int core_alua_set_tg_pt_secondary_state(
else
atomic_set(&port->sep_tg_pt_secondary_offline, 0);
md_buf_len = tg_pt_gp->tg_pt_gp_md_buf_len;
port->sep_tg_pt_secondary_stat = (explicit) ?
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
@ -1077,23 +1354,115 @@ static int core_alua_set_tg_pt_secondary_state(
* secondary state and status
*/
if (port->sep_tg_pt_secondary_write_md) {
md_buf = kzalloc(md_buf_len, GFP_KERNEL);
if (!md_buf) {
pr_err("Unable to allocate md_buf for"
" secondary ALUA access metadata\n");
return -ENOMEM;
}
mutex_lock(&port->sep_tg_pt_md_mutex);
core_alua_update_tpg_secondary_metadata(tg_pt_gp_mem, port,
md_buf, md_buf_len);
core_alua_update_tpg_secondary_metadata(tg_pt_gp_mem, port);
mutex_unlock(&port->sep_tg_pt_md_mutex);
kfree(md_buf);
}
return 0;
}
struct t10_alua_lba_map *
core_alua_allocate_lba_map(struct list_head *list,
u64 first_lba, u64 last_lba)
{
struct t10_alua_lba_map *lba_map;
lba_map = kmem_cache_zalloc(t10_alua_lba_map_cache, GFP_KERNEL);
if (!lba_map) {
pr_err("Unable to allocate struct t10_alua_lba_map\n");
return ERR_PTR(-ENOMEM);
}
INIT_LIST_HEAD(&lba_map->lba_map_mem_list);
lba_map->lba_map_first_lba = first_lba;
lba_map->lba_map_last_lba = last_lba;
list_add_tail(&lba_map->lba_map_list, list);
return lba_map;
}
int
core_alua_allocate_lba_map_mem(struct t10_alua_lba_map *lba_map,
int pg_id, int state)
{
struct t10_alua_lba_map_member *lba_map_mem;
list_for_each_entry(lba_map_mem, &lba_map->lba_map_mem_list,
lba_map_mem_list) {
if (lba_map_mem->lba_map_mem_alua_pg_id == pg_id) {
pr_err("Duplicate pg_id %d in lba_map\n", pg_id);
return -EINVAL;
}
}
lba_map_mem = kmem_cache_zalloc(t10_alua_lba_map_mem_cache, GFP_KERNEL);
if (!lba_map_mem) {
pr_err("Unable to allocate struct t10_alua_lba_map_mem\n");
return -ENOMEM;
}
lba_map_mem->lba_map_mem_alua_state = state;
lba_map_mem->lba_map_mem_alua_pg_id = pg_id;
list_add_tail(&lba_map_mem->lba_map_mem_list,
&lba_map->lba_map_mem_list);
return 0;
}
void
core_alua_free_lba_map(struct list_head *lba_list)
{
struct t10_alua_lba_map *lba_map, *lba_map_tmp;
struct t10_alua_lba_map_member *lba_map_mem, *lba_map_mem_tmp;
list_for_each_entry_safe(lba_map, lba_map_tmp, lba_list,
lba_map_list) {
list_for_each_entry_safe(lba_map_mem, lba_map_mem_tmp,
&lba_map->lba_map_mem_list,
lba_map_mem_list) {
list_del(&lba_map_mem->lba_map_mem_list);
kmem_cache_free(t10_alua_lba_map_mem_cache,
lba_map_mem);
}
list_del(&lba_map->lba_map_list);
kmem_cache_free(t10_alua_lba_map_cache, lba_map);
}
}
void
core_alua_set_lba_map(struct se_device *dev, struct list_head *lba_map_list,
int segment_size, int segment_mult)
{
struct list_head old_lba_map_list;
struct t10_alua_tg_pt_gp *tg_pt_gp;
int activate = 0, supported;
INIT_LIST_HEAD(&old_lba_map_list);
spin_lock(&dev->t10_alua.lba_map_lock);
dev->t10_alua.lba_map_segment_size = segment_size;
dev->t10_alua.lba_map_segment_multiplier = segment_mult;
list_splice_init(&dev->t10_alua.lba_map_list, &old_lba_map_list);
if (lba_map_list) {
list_splice_init(lba_map_list, &dev->t10_alua.lba_map_list);
activate = 1;
}
spin_unlock(&dev->t10_alua.lba_map_lock);
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &dev->t10_alua.tg_pt_gps_list,
tg_pt_gp_list) {
if (!tg_pt_gp->tg_pt_gp_valid_id)
continue;
supported = tg_pt_gp->tg_pt_gp_alua_supported_states;
if (activate)
supported |= ALUA_LBD_SUP;
else
supported &= ~ALUA_LBD_SUP;
tg_pt_gp->tg_pt_gp_alua_supported_states = supported;
}
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
core_alua_free_lba_map(&old_lba_map_list);
}
struct t10_alua_lu_gp *
core_alua_allocate_lu_gp(const char *name, int def_group)
{
@ -1346,8 +1715,9 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev,
mutex_init(&tg_pt_gp->tg_pt_gp_md_mutex);
spin_lock_init(&tg_pt_gp->tg_pt_gp_lock);
atomic_set(&tg_pt_gp->tg_pt_gp_ref_cnt, 0);
INIT_DELAYED_WORK(&tg_pt_gp->tg_pt_gp_transition_work,
core_alua_do_transition_tg_pt_work);
tg_pt_gp->tg_pt_gp_dev = dev;
tg_pt_gp->tg_pt_gp_md_buf_len = ALUA_MD_BUF_LEN;
atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED);
/*
@ -1475,6 +1845,8 @@ void core_alua_free_tg_pt_gp(
dev->t10_alua.alua_tg_pt_gps_counter--;
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
flush_delayed_work(&tg_pt_gp->tg_pt_gp_transition_work);
/*
* Allow a struct t10_alua_tg_pt_gp_member * referenced by
* core_alua_get_tg_pt_gp_by_name() in

15
drivers/target/target_core_alua.h
View File

@ -13,12 +13,13 @@
/*
* ASYMMETRIC ACCESS STATE field
*
* from spc4r17 section 6.27 Table 245
* from spc4r36j section 6.37 Table 307
*/
#define ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED 0x0
#define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED 0x1
#define ALUA_ACCESS_STATE_STANDBY 0x2
#define ALUA_ACCESS_STATE_UNAVAILABLE 0x3
#define ALUA_ACCESS_STATE_LBA_DEPENDENT 0x4
#define ALUA_ACCESS_STATE_OFFLINE 0xe
#define ALUA_ACCESS_STATE_TRANSITION 0xf
@ -78,18 +79,30 @@
*/
#define ALUA_SECONDARY_METADATA_WWN_LEN 256
/* Used by core_alua_update_tpg_(primary,secondary)_metadata */
#define ALUA_MD_BUF_LEN 1024
extern struct kmem_cache *t10_alua_lu_gp_cache;
extern struct kmem_cache *t10_alua_lu_gp_mem_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
extern struct kmem_cache *t10_alua_lba_map_cache;
extern struct kmem_cache *t10_alua_lba_map_mem_cache;
extern sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *);
extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *);
extern sense_reason_t target_emulate_report_referrals(struct se_cmd *);
extern int core_alua_check_nonop_delay(struct se_cmd *);
extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *,
struct se_device *, struct se_port *,
struct se_node_acl *, int, int);
extern char *core_alua_dump_status(int);
extern struct t10_alua_lba_map *core_alua_allocate_lba_map(
struct list_head *, u64, u64);
extern int core_alua_allocate_lba_map_mem(struct t10_alua_lba_map *, int, int);
extern void core_alua_free_lba_map(struct list_head *);
extern void core_alua_set_lba_map(struct se_device *, struct list_head *,
int, int);
extern struct t10_alua_lu_gp *core_alua_allocate_lu_gp(const char *, int);
extern int core_alua_set_lu_gp_id(struct t10_alua_lu_gp *, u16);
extern void core_alua_free_lu_gp(struct t10_alua_lu_gp *);

194
drivers/target/target_core_configfs.c
View File

@ -643,6 +643,15 @@ SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_3pc);
SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(pi_prot_type);
SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB_RO(hw_pi_prot_type);
SE_DEV_ATTR_RO(hw_pi_prot_type);
DEF_DEV_ATTRIB(pi_prot_format);
SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(enforce_pr_isids);
SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR);
@ -702,6 +711,9 @@ static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
&target_core_dev_attrib_emulate_tpws.attr,
&target_core_dev_attrib_emulate_caw.attr,
&target_core_dev_attrib_emulate_3pc.attr,
&target_core_dev_attrib_pi_prot_type.attr,
&target_core_dev_attrib_hw_pi_prot_type.attr,
&target_core_dev_attrib_pi_prot_format.attr,
&target_core_dev_attrib_enforce_pr_isids.attr,
&target_core_dev_attrib_is_nonrot.attr,
&target_core_dev_attrib_emulate_rest_reord.attr,
@ -1741,6 +1753,176 @@ static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = {
.store = target_core_store_alua_lu_gp,
};
static ssize_t target_core_show_dev_lba_map(void *p, char *page)
{
struct se_device *dev = p;
struct t10_alua_lba_map *map;
struct t10_alua_lba_map_member *mem;
char *b = page;
int bl = 0;
char state;
spin_lock(&dev->t10_alua.lba_map_lock);
if (!list_empty(&dev->t10_alua.lba_map_list))
bl += sprintf(b + bl, "%u %u\n",
dev->t10_alua.lba_map_segment_size,
dev->t10_alua.lba_map_segment_multiplier);
list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) {
bl += sprintf(b + bl, "%llu %llu",
map->lba_map_first_lba, map->lba_map_last_lba);
list_for_each_entry(mem, &map->lba_map_mem_list,
lba_map_mem_list) {
switch (mem->lba_map_mem_alua_state) {
case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
state = 'O';
break;
case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
state = 'A';
break;
case ALUA_ACCESS_STATE_STANDBY:
state = 'S';
break;
case ALUA_ACCESS_STATE_UNAVAILABLE:
state = 'U';
break;
default:
state = '.';
break;
}
bl += sprintf(b + bl, " %d:%c",
mem->lba_map_mem_alua_pg_id, state);
}
bl += sprintf(b + bl, "\n");
}
spin_unlock(&dev->t10_alua.lba_map_lock);
return bl;
}
static ssize_t target_core_store_dev_lba_map(
void *p,
const char *page,
size_t count)
{
struct se_device *dev = p;
struct t10_alua_lba_map *lba_map = NULL;
struct list_head lba_list;
char *map_entries, *ptr;
char state;
int pg_num = -1, pg;
int ret = 0, num = 0, pg_id, alua_state;
unsigned long start_lba = -1, end_lba = -1;
unsigned long segment_size = -1, segment_mult = -1;
map_entries = kstrdup(page, GFP_KERNEL);
if (!map_entries)
return -ENOMEM;
INIT_LIST_HEAD(&lba_list);
while ((ptr = strsep(&map_entries, "\n")) != NULL) {
if (!*ptr)
continue;
if (num == 0) {
if (sscanf(ptr, "%lu %lu\n",
&segment_size, &segment_mult) != 2) {
pr_err("Invalid line %d\n", num);
ret = -EINVAL;
break;
}
num++;
continue;
}
if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) {
pr_err("Invalid line %d\n", num);
ret = -EINVAL;
break;
}
ptr = strchr(ptr, ' ');
if (!ptr) {
pr_err("Invalid line %d, missing end lba\n", num);
ret = -EINVAL;
break;
}
ptr++;
ptr = strchr(ptr, ' ');
if (!ptr) {
pr_err("Invalid line %d, missing state definitions\n",
num);
ret = -EINVAL;
break;
}
ptr++;
lba_map = core_alua_allocate_lba_map(&lba_list,
start_lba, end_lba);
if (IS_ERR(lba_map)) {
ret = PTR_ERR(lba_map);
break;
}
pg = 0;
while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) {
switch (state) {
case 'O':
alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED;
break;
case 'A':
alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED;
break;
case 'S':
alua_state = ALUA_ACCESS_STATE_STANDBY;
break;
case 'U':
alua_state = ALUA_ACCESS_STATE_UNAVAILABLE;
break;
default:
pr_err("Invalid ALUA state '%c'\n", state);
ret = -EINVAL;
goto out;
}
ret = core_alua_allocate_lba_map_mem(lba_map,
pg_id, alua_state);
if (ret) {
pr_err("Invalid target descriptor %d:%c "
"at line %d\n",
pg_id, state, num);
break;
}
pg++;
ptr = strchr(ptr, ' ');
if (ptr)
ptr++;
else
break;
}
if (pg_num == -1)
pg_num = pg;
else if (pg != pg_num) {
pr_err("Only %d from %d port groups definitions "
"at line %d\n", pg, pg_num, num);
ret = -EINVAL;
break;
}
num++;
}
out:
if (ret) {
core_alua_free_lba_map(&lba_list);
count = ret;
} else
core_alua_set_lba_map(dev, &lba_list,
segment_size, segment_mult);
kfree(map_entries);
return count;
}
static struct target_core_configfs_attribute target_core_attr_dev_lba_map = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "lba_map",
.ca_mode = S_IRUGO | S_IWUSR },
.show = target_core_show_dev_lba_map,
.store = target_core_store_dev_lba_map,
};
static struct configfs_attribute *lio_core_dev_attrs[] = {
&target_core_attr_dev_info.attr,
&target_core_attr_dev_control.attr,
@ -1748,6 +1930,7 @@ static struct configfs_attribute *lio_core_dev_attrs[] = {
&target_core_attr_dev_udev_path.attr,
&target_core_attr_dev_enable.attr,
&target_core_attr_dev_alua_lu_gp.attr,
&target_core_attr_dev_lba_map.attr,
NULL,
};
@ -2054,6 +2237,13 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
" transition while TPGS_IMPLICIT_ALUA is disabled\n");
return -EINVAL;
}
if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA &&
new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) {
/* LBA DEPENDENT is only allowed with implicit ALUA */
pr_err("Unable to process implicit configfs ALUA transition"
" while explicit ALUA management is enabled\n");
return -EINVAL;
}
ret = core_alua_do_port_transition(tg_pt_gp, dev,
NULL, NULL, new_state, 0);
@ -2188,7 +2378,7 @@ SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent,
tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent,
tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO | S_IWUSR);
SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO);
SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable,
tg_pt_gp_alua_supported_states, ALUA_U_SUP);
@ -2937,7 +3127,7 @@ static int __init target_core_init_configfs(void)
* and ALUA Logical Unit Group and Target Port Group infrastructure.
*/
target_cg = &subsys->su_group;
target_cg->default_groups = kmalloc(sizeof(struct config_group) * 2,
target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
GFP_KERNEL);
if (!target_cg->default_groups) {
pr_err("Unable to allocate target_cg->default_groups\n");

108
drivers/target/target_core_device.c
View File

@ -918,6 +918,90 @@ int se_dev_set_emulate_3pc(struct se_device *dev, int flag)
return 0;
}
int se_dev_set_pi_prot_type(struct se_device *dev, int flag)
{
int rc, old_prot = dev->dev_attrib.pi_prot_type;
if (flag != 0 && flag != 1 && flag != 2 && flag != 3) {
pr_err("Illegal value %d for pi_prot_type\n", flag);
return -EINVAL;
}
if (flag == 2) {
pr_err("DIF TYPE2 protection currently not supported\n");
return -ENOSYS;
}
if (dev->dev_attrib.hw_pi_prot_type) {
pr_warn("DIF protection enabled on underlying hardware,"
" ignoring\n");
return 0;
}
if (!dev->transport->init_prot || !dev->transport->free_prot) {
pr_err("DIF protection not supported by backend: %s\n",
dev->transport->name);
return -ENOSYS;
}
if (!(dev->dev_flags & DF_CONFIGURED)) {
pr_err("DIF protection requires device to be configured\n");
return -ENODEV;
}
if (dev->export_count) {
pr_err("dev[%p]: Unable to change SE Device PROT type while"
" export_count is %d\n", dev, dev->export_count);
return -EINVAL;
}
dev->dev_attrib.pi_prot_type = flag;
if (flag && !old_prot) {
rc = dev->transport->init_prot(dev);
if (rc) {
dev->dev_attrib.pi_prot_type = old_prot;
return rc;
}
} else if (!flag && old_prot) {
dev->transport->free_prot(dev);
}
pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag);
return 0;
}
int se_dev_set_pi_prot_format(struct se_device *dev, int flag)
{
int rc;
if (!flag)
return 0;
if (flag != 1) {
pr_err("Illegal value %d for pi_prot_format\n", flag);
return -EINVAL;
}
if (!dev->transport->format_prot) {
pr_err("DIF protection format not supported by backend %s\n",
dev->transport->name);
return -ENOSYS;
}
if (!(dev->dev_flags & DF_CONFIGURED)) {
pr_err("DIF protection format requires device to be configured\n");
return -ENODEV;
}
if (dev->export_count) {
pr_err("dev[%p]: Unable to format SE Device PROT type while"
" export_count is %d\n", dev, dev->export_count);
return -EINVAL;
}
rc = dev->transport->format_prot(dev);
if (rc)
return rc;
pr_debug("dev[%p]: SE Device Protection Format complete\n", dev);
return 0;
}
int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
{
if ((flag != 0) && (flag != 1)) {
@ -1117,23 +1201,23 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size)
struct se_lun *core_dev_add_lun(
struct se_portal_group *tpg,
struct se_device *dev,
u32 lun)
u32 unpacked_lun)
{
struct se_lun *lun_p;
struct se_lun *lun;
int rc;
lun_p = core_tpg_pre_addlun(tpg, lun);
if (IS_ERR(lun_p))
return lun_p;
lun = core_tpg_alloc_lun(tpg, unpacked_lun);
if (IS_ERR(lun))
return lun;
rc = core_tpg_post_addlun(tpg, lun_p,
rc = core_tpg_add_lun(tpg, lun,
TRANSPORT_LUNFLAGS_READ_WRITE, dev);
if (rc < 0)
return ERR_PTR(rc);
pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
" CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun,
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id);
/*
* Update LUN maps for dynamically added initiators when
@ -1154,7 +1238,7 @@ struct se_lun *core_dev_add_lun(
spin_unlock_irq(&tpg->acl_node_lock);
}
return lun_p;
return lun;
}
/* core_dev_del_lun():
@ -1420,6 +1504,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
dev->dev_link_magic = SE_DEV_LINK_MAGIC;
dev->se_hba = hba;
dev->transport = hba->transport;
dev->prot_length = sizeof(struct se_dif_v1_tuple);
INIT_LIST_HEAD(&dev->dev_list);
INIT_LIST_HEAD(&dev->dev_sep_list);
@ -1444,6 +1529,8 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
spin_lock_init(&dev->t10_pr.aptpl_reg_lock);
INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list);
spin_lock_init(&dev->t10_alua.tg_pt_gps_lock);
INIT_LIST_HEAD(&dev->t10_alua.lba_map_list);
spin_lock_init(&dev->t10_alua.lba_map_lock);
dev->t10_wwn.t10_dev = dev;
dev->t10_alua.t10_dev = dev;
@ -1460,6 +1547,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
dev->dev_attrib.emulate_caw = DA_EMULATE_CAW;
dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC;
dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT;
dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
dev->dev_attrib.is_nonrot = DA_IS_NONROT;
dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD;
@ -1588,9 +1676,13 @@ void target_free_device(struct se_device *dev)
}
core_alua_free_lu_gp_mem(dev);
core_alua_set_lba_map(dev, NULL, 0, 0);
core_scsi3_free_all_registrations(dev);
se_release_vpd_for_dev(dev);
if (dev->transport->free_prot)
dev->transport->free_prot(dev);
dev->transport->free_device(dev);
}

2
drivers/target/target_core_fabric_configfs.c
View File

@ -906,7 +906,7 @@ static struct config_group *target_fabric_make_lun(
lun_cg->default_groups[1] = NULL;
port_stat_grp = &lun->port_stat_grps.stat_group;
port_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
port_stat_grp->default_groups = kzalloc(sizeof(struct config_group *) * 4,
GFP_KERNEL);
if (!port_stat_grp->default_groups) {
pr_err("Unable to allocate port_stat_grp->default_groups\n");

256
drivers/target/target_core_file.c
View File

@ -257,6 +257,72 @@ static void fd_free_device(struct se_device *dev)
kfree(fd_dev);
}
static int fd_do_prot_rw(struct se_cmd *cmd, struct fd_prot *fd_prot,
int is_write)
{
struct se_device *se_dev = cmd->se_dev;
struct fd_dev *dev = FD_DEV(se_dev);
struct file *prot_fd = dev->fd_prot_file;
struct scatterlist *sg;
loff_t pos = (cmd->t_task_lba * se_dev->prot_length);
unsigned char *buf;
u32 prot_size, len, size;
int rc, ret = 1, i;
prot_size = (cmd->data_length / se_dev->dev_attrib.block_size) *
se_dev->prot_length;
if (!is_write) {
fd_prot->prot_buf = vzalloc(prot_size);
if (!fd_prot->prot_buf) {
pr_err("Unable to allocate fd_prot->prot_buf\n");
return -ENOMEM;
}
buf = fd_prot->prot_buf;
fd_prot->prot_sg_nents = cmd->t_prot_nents;
fd_prot->prot_sg = kzalloc(sizeof(struct scatterlist) *
fd_prot->prot_sg_nents, GFP_KERNEL);
if (!fd_prot->prot_sg) {
pr_err("Unable to allocate fd_prot->prot_sg\n");
vfree(fd_prot->prot_buf);
return -ENOMEM;
}
size = prot_size;
for_each_sg(fd_prot->prot_sg, sg, fd_prot->prot_sg_nents, i) {
len = min_t(u32, PAGE_SIZE, size);
sg_set_buf(sg, buf, len);
size -= len;
buf += len;
}
}
if (is_write) {
rc = kernel_write(prot_fd, fd_prot->prot_buf, prot_size, pos);
if (rc < 0 || prot_size != rc) {
pr_err("kernel_write() for fd_do_prot_rw failed:"
" %d\n", rc);
ret = -EINVAL;
}
} else {
rc = kernel_read(prot_fd, pos, fd_prot->prot_buf, prot_size);
if (rc < 0) {
pr_err("kernel_read() for fd_do_prot_rw failed:"
" %d\n", rc);
ret = -EINVAL;
}
}
if (is_write || ret < 0) {
kfree(fd_prot->prot_sg);
vfree(fd_prot->prot_buf);
}
return ret;
}
static int fd_do_rw(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents, int is_write)
{
@ -551,6 +617,8 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
enum dma_data_direction data_direction)
{
struct se_device *dev = cmd->se_dev;
struct fd_prot fd_prot;
sense_reason_t rc;
int ret = 0;
/*
@ -558,8 +626,48 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
* physical memory addresses to struct iovec virtual memory.
*/
if (data_direction == DMA_FROM_DEVICE) {
memset(&fd_prot, 0, sizeof(struct fd_prot));
if (cmd->prot_type) {
ret = fd_do_prot_rw(cmd, &fd_prot, false);
if (ret < 0)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
ret = fd_do_rw(cmd, sgl, sgl_nents, 0);
if (ret > 0 && cmd->prot_type) {
u32 sectors = cmd->data_length / dev->dev_attrib.block_size;
rc = sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors,
0, fd_prot.prot_sg, 0);
if (rc) {
kfree(fd_prot.prot_sg);
vfree(fd_prot.prot_buf);
return rc;
}
kfree(fd_prot.prot_sg);
vfree(fd_prot.prot_buf);
}
} else {
memset(&fd_prot, 0, sizeof(struct fd_prot));
if (cmd->prot_type) {
u32 sectors = cmd->data_length / dev->dev_attrib.block_size;
ret = fd_do_prot_rw(cmd, &fd_prot, false);
if (ret < 0)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
rc = sbc_dif_verify_write(cmd, cmd->t_task_lba, sectors,
0, fd_prot.prot_sg, 0);
if (rc) {
kfree(fd_prot.prot_sg);
vfree(fd_prot.prot_buf);
return rc;
}
}
ret = fd_do_rw(cmd, sgl, sgl_nents, 1);
/*
* Perform implicit vfs_fsync_range() for fd_do_writev() ops
@ -576,10 +684,19 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
vfs_fsync_range(fd_dev->fd_file, start, end, 1);
}
if (ret > 0 && cmd->prot_type) {
ret = fd_do_prot_rw(cmd, &fd_prot, true);
if (ret < 0)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
}
if (ret < 0)
if (ret < 0) {
kfree(fd_prot.prot_sg);
vfree(fd_prot.prot_buf);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
if (ret)
target_complete_cmd(cmd, SAM_STAT_GOOD);
@ -700,6 +817,140 @@ static sector_t fd_get_blocks(struct se_device *dev)
dev->dev_attrib.block_size);
}
static int fd_init_prot(struct se_device *dev)
{
struct fd_dev *fd_dev = FD_DEV(dev);
struct file *prot_file, *file = fd_dev->fd_file;
struct inode *inode;
int ret, flags = O_RDWR | O_CREAT | O_LARGEFILE | O_DSYNC;
char buf[FD_MAX_DEV_PROT_NAME];
if (!file) {
pr_err("Unable to locate fd_dev->fd_file\n");
return -ENODEV;
}
inode = file->f_mapping->host;
if (S_ISBLK(inode->i_mode)) {
pr_err("FILEIO Protection emulation only supported on"
" !S_ISBLK\n");
return -ENOSYS;
}
if (fd_dev->fbd_flags & FDBD_HAS_BUFFERED_IO_WCE)
flags &= ~O_DSYNC;
snprintf(buf, FD_MAX_DEV_PROT_NAME, "%s.protection",
fd_dev->fd_dev_name);
prot_file = filp_open(buf, flags, 0600);
if (IS_ERR(prot_file)) {
pr_err("filp_open(%s) failed\n", buf);
ret = PTR_ERR(prot_file);
return ret;
}
fd_dev->fd_prot_file = prot_file;
return 0;
}
static void fd_init_format_buf(struct se_device *dev, unsigned char *buf,
u32 unit_size, u32 *ref_tag, u16 app_tag,
bool inc_reftag)
{
unsigned char *p = buf;
int i;
for (i = 0; i < unit_size; i += dev->prot_length) {
*((u16 *)&p[0]) = 0xffff;
*((__be16 *)&p[2]) = cpu_to_be16(app_tag);
*((__be32 *)&p[4]) = cpu_to_be32(*ref_tag);
if (inc_reftag)
(*ref_tag)++;
p += dev->prot_length;
}
}
static int fd_format_prot(struct se_device *dev)
{
struct fd_dev *fd_dev = FD_DEV(dev);
struct file *prot_fd = fd_dev->fd_prot_file;
sector_t prot_length, prot;
unsigned char *buf;
loff_t pos = 0;
u32 ref_tag = 0;
int unit_size = FDBD_FORMAT_UNIT_SIZE * dev->dev_attrib.block_size;
int rc, ret = 0, size, len;
bool inc_reftag = false;
if (!dev->dev_attrib.pi_prot_type) {
pr_err("Unable to format_prot while pi_prot_type == 0\n");
return -ENODEV;
}
if (!prot_fd) {
pr_err("Unable to locate fd_dev->fd_prot_file\n");
return -ENODEV;
}
switch (dev->dev_attrib.pi_prot_type) {
case TARGET_DIF_TYPE3_PROT:
ref_tag = 0xffffffff;
break;
case TARGET_DIF_TYPE2_PROT:
case TARGET_DIF_TYPE1_PROT:
inc_reftag = true;
break;
default:
break;
}
buf = vzalloc(unit_size);
if (!buf) {
pr_err("Unable to allocate FILEIO prot buf\n");
return -ENOMEM;
}
prot_length = (dev->transport->get_blocks(dev) + 1) * dev->prot_length;
size = prot_length;
pr_debug("Using FILEIO prot_length: %llu\n",
(unsigned long long)prot_length);
for (prot = 0; prot < prot_length; prot += unit_size) {
fd_init_format_buf(dev, buf, unit_size, &ref_tag, 0xffff,
inc_reftag);
len = min(unit_size, size);
rc = kernel_write(prot_fd, buf, len, pos);
if (rc != len) {
pr_err("vfs_write to prot file failed: %d\n", rc);
ret = -ENODEV;
goto out;
}
pos += len;
size -= len;
}
out:
vfree(buf);
return ret;
}
static void fd_free_prot(struct se_device *dev)
{
struct fd_dev *fd_dev = FD_DEV(dev);
if (!fd_dev->fd_prot_file)
return;
filp_close(fd_dev->fd_prot_file, NULL);
fd_dev->fd_prot_file = NULL;
}
static struct sbc_ops fd_sbc_ops = {
.execute_rw = fd_execute_rw,
.execute_sync_cache = fd_execute_sync_cache,
@ -730,6 +981,9 @@ static struct se_subsystem_api fileio_template = {
.show_configfs_dev_params = fd_show_configfs_dev_params,
.get_device_type = sbc_get_device_type,
.get_blocks = fd_get_blocks,
.init_prot = fd_init_prot,
.format_prot = fd_format_prot,
.free_prot = fd_free_prot,
};
static int __init fileio_module_init(void)

9
drivers/target/target_core_file.h
View File

@ -4,6 +4,7 @@
#define FD_VERSION "4.0"
#define FD_MAX_DEV_NAME 256
#define FD_MAX_DEV_PROT_NAME FD_MAX_DEV_NAME + 16
#define FD_DEVICE_QUEUE_DEPTH 32
#define FD_MAX_DEVICE_QUEUE_DEPTH 128
#define FD_BLOCKSIZE 512
@ -18,6 +19,13 @@
#define FBDF_HAS_PATH 0x01
#define FBDF_HAS_SIZE 0x02
#define FDBD_HAS_BUFFERED_IO_WCE 0x04
#define FDBD_FORMAT_UNIT_SIZE 2048
struct fd_prot {
unsigned char *prot_buf;
struct scatterlist *prot_sg;
u32 prot_sg_nents;
};
struct fd_dev {
struct se_device dev;
@ -32,6 +40,7 @@ struct fd_dev {
u32 fd_block_size;
unsigned long long fd_dev_size;
struct file *fd_file;
struct file *fd_prot_file;
/* FILEIO HBA device is connected to */
struct fd_host *fd_host;
} ____cacheline_aligned;

93
drivers/target/target_core_iblock.c
View File

@ -91,6 +91,7 @@ static int iblock_configure_device(struct se_device *dev)
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct request_queue *q;
struct block_device *bd = NULL;
struct blk_integrity *bi;
fmode_t mode;
int ret = -ENOMEM;
@ -155,8 +156,40 @@ static int iblock_configure_device(struct se_device *dev)
if (blk_queue_nonrot(q))
dev->dev_attrib.is_nonrot = 1;
bi = bdev_get_integrity(bd);
if (bi) {
struct bio_set *bs = ib_dev->ibd_bio_set;
if (!strcmp(bi->name, "T10-DIF-TYPE3-IP") ||
!strcmp(bi->name, "T10-DIF-TYPE1-IP")) {
pr_err("IBLOCK export of blk_integrity: %s not"
" supported\n", bi->name);
ret = -ENOSYS;
goto out_blkdev_put;
}
if (!strcmp(bi->name, "T10-DIF-TYPE3-CRC")) {
dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE3_PROT;
} else if (!strcmp(bi->name, "T10-DIF-TYPE1-CRC")) {
dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE1_PROT;
}
if (dev->dev_attrib.pi_prot_type) {
if (bioset_integrity_create(bs, IBLOCK_BIO_POOL_SIZE) < 0) {
pr_err("Unable to allocate bioset for PI\n");
ret = -ENOMEM;
goto out_blkdev_put;
}
pr_debug("IBLOCK setup BIP bs->bio_integrity_pool: %p\n",
bs->bio_integrity_pool);
}
dev->dev_attrib.hw_pi_prot_type = dev->dev_attrib.pi_prot_type;
}
return 0;
out_blkdev_put:
blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
out_free_bioset:
bioset_free(ib_dev->ibd_bio_set);
ib_dev->ibd_bio_set = NULL;
@ -170,8 +203,10 @@ static void iblock_free_device(struct se_device *dev)
if (ib_dev->ibd_bd != NULL)
blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
if (ib_dev->ibd_bio_set != NULL)
if (ib_dev->ibd_bio_set != NULL) {
bioset_integrity_free(ib_dev->ibd_bio_set);
bioset_free(ib_dev->ibd_bio_set);
}
kfree(ib_dev);
}
@ -586,13 +621,58 @@ static ssize_t iblock_show_configfs_dev_params(struct se_device *dev, char *b)
return bl;
}
static int
iblock_alloc_bip(struct se_cmd *cmd, struct bio *bio)
{
struct se_device *dev = cmd->se_dev;
struct blk_integrity *bi;
struct bio_integrity_payload *bip;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct scatterlist *sg;
int i, rc;
bi = bdev_get_integrity(ib_dev->ibd_bd);
if (!bi) {
pr_err("Unable to locate bio_integrity\n");
return -ENODEV;
}
bip = bio_integrity_alloc(bio, GFP_NOIO, cmd->t_prot_nents);
if (!bip) {
pr_err("Unable to allocate bio_integrity_payload\n");
return -ENOMEM;
}
bip->bip_iter.bi_size = (cmd->data_length / dev->dev_attrib.block_size) *
dev->prot_length;
bip->bip_iter.bi_sector = bio->bi_iter.bi_sector;
pr_debug("IBLOCK BIP Size: %u Sector: %llu\n", bip->bip_iter.bi_size,
(unsigned long long)bip->bip_iter.bi_sector);
for_each_sg(cmd->t_prot_sg, sg, cmd->t_prot_nents, i) {
rc = bio_integrity_add_page(bio, sg_page(sg), sg->length,
sg->offset);
if (rc != sg->length) {
pr_err("bio_integrity_add_page() failed; %d\n", rc);
return -ENOMEM;
}
pr_debug("Added bio integrity page: %p length: %d offset; %d\n",
sg_page(sg), sg->length, sg->offset);
}
return 0;
}
static sense_reason_t
iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
enum dma_data_direction data_direction)
{
struct se_device *dev = cmd->se_dev;
struct iblock_req *ibr;
struct bio *bio;
struct bio *bio, *bio_start;
struct bio_list list;
struct scatterlist *sg;
u32 sg_num = sgl_nents;
@ -655,6 +735,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
if (!bio)
goto fail_free_ibr;
bio_start = bio;
bio_list_init(&list);
bio_list_add(&list, bio);
@ -688,6 +769,12 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
sg_num--;
}
if (cmd->prot_type) {
int rc = iblock_alloc_bip(cmd, bio_start);
if (rc)
goto fail_put_bios;
}
iblock_submit_bios(&list, rw);
iblock_complete_cmd(cmd);
return 0;
@ -763,7 +850,7 @@ iblock_parse_cdb(struct se_cmd *cmd)
return sbc_parse_cdb(cmd, &iblock_sbc_ops);
}
bool iblock_get_write_cache(struct se_device *dev)
static bool iblock_get_write_cache(struct se_device *dev)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct block_device *bd = ib_dev->ibd_bd;

8
drivers/target/target_core_internal.h
View File

@ -35,6 +35,8 @@ int se_dev_set_emulate_tpu(struct se_device *, int);
int se_dev_set_emulate_tpws(struct se_device *, int);
int se_dev_set_emulate_caw(struct se_device *, int);
int se_dev_set_emulate_3pc(struct se_device *, int);
int se_dev_set_pi_prot_type(struct se_device *, int);
int se_dev_set_pi_prot_format(struct se_device *, int);
int se_dev_set_enforce_pr_isids(struct se_device *, int);
int se_dev_set_is_nonrot(struct se_device *, int);
int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
@ -77,9 +79,9 @@ struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tp
const char *);
void core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *);
void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
struct se_lun *core_tpg_pre_addlun(struct se_portal_group *, u32);
int core_tpg_post_addlun(struct se_portal_group *, struct se_lun *,
u32, void *);
struct se_lun *core_tpg_alloc_lun(struct se_portal_group *, u32);
int core_tpg_add_lun(struct se_portal_group *, struct se_lun *,
u32, struct se_device *);
struct se_lun *core_tpg_pre_dellun(struct se_portal_group *, u32 unpacked_lun);
int core_tpg_post_dellun(struct se_portal_group *, struct se_lun *);

5
drivers/target/target_core_pr.h
View File

@ -43,6 +43,11 @@
#define PR_APTPL_MAX_IPORT_LEN 256
#define PR_APTPL_MAX_TPORT_LEN 256
/*
* Function defined in target_core_spc.c
*/
void spc_parse_naa_6h_vendor_specific(struct se_device *, unsigned char *);
extern struct kmem_cache *t10_pr_reg_cache;
extern void core_pr_dump_initiator_port(struct t10_pr_registration *,

252
drivers/target/target_core_rd.c
View File

@ -78,23 +78,14 @@ static void rd_detach_hba(struct se_hba *hba)
hba->hba_ptr = NULL;
}
/* rd_release_device_space():
*
*
*/
static void rd_release_device_space(struct rd_dev *rd_dev)
static u32 rd_release_sgl_table(struct rd_dev *rd_dev, struct rd_dev_sg_table *sg_table,
u32 sg_table_count)
{
u32 i, j, page_count = 0, sg_per_table;
struct rd_dev_sg_table *sg_table;
struct page *pg;
struct scatterlist *sg;
u32 i, j, page_count = 0, sg_per_table;
if (!rd_dev->sg_table_array || !rd_dev->sg_table_count)
return;
sg_table = rd_dev->sg_table_array;
for (i = 0; i < rd_dev->sg_table_count; i++) {
for (i = 0; i < sg_table_count; i++) {
sg = sg_table[i].sg_table;
sg_per_table = sg_table[i].rd_sg_count;
@ -105,16 +96,28 @@ static void rd_release_device_space(struct rd_dev *rd_dev)
page_count++;
}
}
kfree(sg);
}
kfree(sg_table);
return page_count;
}
static void rd_release_device_space(struct rd_dev *rd_dev)
{
u32 page_count;
if (!rd_dev->sg_table_array || !rd_dev->sg_table_count)
return;
page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_table_array,
rd_dev->sg_table_count);
pr_debug("CORE_RD[%u] - Released device space for Ramdisk"
" Device ID: %u, pages %u in %u tables total bytes %lu\n",
rd_dev->rd_host->rd_host_id, rd_dev->rd_dev_id, page_count,
rd_dev->sg_table_count, (unsigned long)page_count * PAGE_SIZE);
kfree(sg_table);
rd_dev->sg_table_array = NULL;
rd_dev->sg_table_count = 0;
}
@ -124,38 +127,15 @@ static void rd_release_device_space(struct rd_dev *rd_dev)
*
*
*/
static int rd_build_device_space(struct rd_dev *rd_dev)
static int rd_allocate_sgl_table(struct rd_dev *rd_dev, struct rd_dev_sg_table *sg_table,
u32 total_sg_needed, unsigned char init_payload)
{
u32 i = 0, j, page_offset = 0, sg_per_table, sg_tables, total_sg_needed;
u32 i = 0, j, page_offset = 0, sg_per_table;
u32 max_sg_per_table = (RD_MAX_ALLOCATION_SIZE /
sizeof(struct scatterlist));
struct rd_dev_sg_table *sg_table;
struct page *pg;
struct scatterlist *sg;
if (rd_dev->rd_page_count <= 0) {
pr_err("Illegal page count: %u for Ramdisk device\n",
rd_dev->rd_page_count);
return -EINVAL;
}
/* Don't need backing pages for NULLIO */
if (rd_dev->rd_flags & RDF_NULLIO)
return 0;
total_sg_needed = rd_dev->rd_page_count;
sg_tables = (total_sg_needed / max_sg_per_table) + 1;
sg_table = kzalloc(sg_tables * sizeof(struct rd_dev_sg_table), GFP_KERNEL);
if (!sg_table) {
pr_err("Unable to allocate memory for Ramdisk"
" scatterlist tables\n");
return -ENOMEM;
}
rd_dev->sg_table_array = sg_table;
rd_dev->sg_table_count = sg_tables;
unsigned char *p;
while (total_sg_needed) {
sg_per_table = (total_sg_needed > max_sg_per_table) ?
@ -186,16 +166,114 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
}
sg_assign_page(&sg[j], pg);
sg[j].length = PAGE_SIZE;
p = kmap(pg);
memset(p, init_payload, PAGE_SIZE);
kunmap(pg);
}
page_offset += sg_per_table;
total_sg_needed -= sg_per_table;
}
return 0;
}
static int rd_build_device_space(struct rd_dev *rd_dev)
{
struct rd_dev_sg_table *sg_table;
u32 sg_tables, total_sg_needed;
u32 max_sg_per_table = (RD_MAX_ALLOCATION_SIZE /
sizeof(struct scatterlist));
int rc;
if (rd_dev->rd_page_count <= 0) {
pr_err("Illegal page count: %u for Ramdisk device\n",
rd_dev->rd_page_count);
return -EINVAL;
}
/* Don't need backing pages for NULLIO */
if (rd_dev->rd_flags & RDF_NULLIO)
return 0;
total_sg_needed = rd_dev->rd_page_count;
sg_tables = (total_sg_needed / max_sg_per_table) + 1;
sg_table = kzalloc(sg_tables * sizeof(struct rd_dev_sg_table), GFP_KERNEL);
if (!sg_table) {
pr_err("Unable to allocate memory for Ramdisk"
" scatterlist tables\n");
return -ENOMEM;
}
rd_dev->sg_table_array = sg_table;
rd_dev->sg_table_count = sg_tables;
rc = rd_allocate_sgl_table(rd_dev, sg_table, total_sg_needed, 0x00);
if (rc)
return rc;
pr_debug("CORE_RD[%u] - Built Ramdisk Device ID: %u space of"
" %u pages in %u tables\n", rd_dev->rd_host->rd_host_id,
rd_dev->rd_dev_id, rd_dev->rd_page_count,
rd_dev->sg_table_count);
" %u pages in %u tables\n", rd_dev->rd_host->rd_host_id,
rd_dev->rd_dev_id, rd_dev->rd_page_count,
rd_dev->sg_table_count);
return 0;
}
static void rd_release_prot_space(struct rd_dev *rd_dev)
{
u32 page_count;
if (!rd_dev->sg_prot_array || !rd_dev->sg_prot_count)
return;
page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_prot_array,
rd_dev->sg_prot_count);
pr_debug("CORE_RD[%u] - Released protection space for Ramdisk"
" Device ID: %u, pages %u in %u tables total bytes %lu\n",
rd_dev->rd_host->rd_host_id, rd_dev->rd_dev_id, page_count,
rd_dev->sg_table_count, (unsigned long)page_count * PAGE_SIZE);
rd_dev->sg_prot_array = NULL;
rd_dev->sg_prot_count = 0;
}
static int rd_build_prot_space(struct rd_dev *rd_dev, int prot_length)
{
struct rd_dev_sg_table *sg_table;
u32 total_sg_needed, sg_tables;
u32 max_sg_per_table = (RD_MAX_ALLOCATION_SIZE /
sizeof(struct scatterlist));
int rc;
if (rd_dev->rd_flags & RDF_NULLIO)
return 0;
total_sg_needed = rd_dev->rd_page_count / prot_length;
sg_tables = (total_sg_needed / max_sg_per_table) + 1;
sg_table = kzalloc(sg_tables * sizeof(struct rd_dev_sg_table), GFP_KERNEL);
if (!sg_table) {
pr_err("Unable to allocate memory for Ramdisk protection"
" scatterlist tables\n");
return -ENOMEM;
}
rd_dev->sg_prot_array = sg_table;
rd_dev->sg_prot_count = sg_tables;
rc = rd_allocate_sgl_table(rd_dev, sg_table, total_sg_needed, 0xff);
if (rc)
return rc;
pr_debug("CORE_RD[%u] - Built Ramdisk Device ID: %u prot space of"
" %u pages in %u tables\n", rd_dev->rd_host->rd_host_id,
rd_dev->rd_dev_id, total_sg_needed, rd_dev->sg_prot_count);
return 0;
}
@ -278,6 +356,26 @@ static struct rd_dev_sg_table *rd_get_sg_table(struct rd_dev *rd_dev, u32 page)
return NULL;
}
static struct rd_dev_sg_table *rd_get_prot_table(struct rd_dev *rd_dev, u32 page)
{
struct rd_dev_sg_table *sg_table;
u32 i, sg_per_table = (RD_MAX_ALLOCATION_SIZE /
sizeof(struct scatterlist));
i = page / sg_per_table;
if (i < rd_dev->sg_prot_count) {
sg_table = &rd_dev->sg_prot_array[i];
if ((sg_table->page_start_offset <= page) &&
(sg_table->page_end_offset >= page))
return sg_table;
}
pr_err("Unable to locate struct prot rd_dev_sg_table for page: %u\n",
page);
return NULL;
}
static sense_reason_t
rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
enum dma_data_direction data_direction)
@ -292,6 +390,7 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
u32 rd_page;
u32 src_len;
u64 tmp;
sense_reason_t rc;
if (dev->rd_flags & RDF_NULLIO) {
target_complete_cmd(cmd, SAM_STAT_GOOD);
@ -314,6 +413,28 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
data_direction == DMA_FROM_DEVICE ? "Read" : "Write",
cmd->t_task_lba, rd_size, rd_page, rd_offset);
if (cmd->prot_type && data_direction == DMA_TO_DEVICE) {
struct rd_dev_sg_table *prot_table;
struct scatterlist *prot_sg;
u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size;
u32 prot_offset, prot_page;
tmp = cmd->t_task_lba * se_dev->prot_length;
prot_offset = do_div(tmp, PAGE_SIZE);
prot_page = tmp;
prot_table = rd_get_prot_table(dev, prot_page);
if (!prot_table)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
prot_sg = &prot_table->sg_table[prot_page - prot_table->page_start_offset];
rc = sbc_dif_verify_write(cmd, cmd->t_task_lba, sectors, 0,
prot_sg, prot_offset);
if (rc)
return rc;
}
src_len = PAGE_SIZE - rd_offset;
sg_miter_start(&m, sgl, sgl_nents,
data_direction == DMA_FROM_DEVICE ?
@ -375,6 +496,28 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
}
sg_miter_stop(&m);
if (cmd->prot_type && data_direction == DMA_FROM_DEVICE) {
struct rd_dev_sg_table *prot_table;
struct scatterlist *prot_sg;
u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size;
u32 prot_offset, prot_page;
tmp = cmd->t_task_lba * se_dev->prot_length;
prot_offset = do_div(tmp, PAGE_SIZE);
prot_page = tmp;
prot_table = rd_get_prot_table(dev, prot_page);
if (!prot_table)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
prot_sg = &prot_table->sg_table[prot_page - prot_table->page_start_offset];
rc = sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors, 0,
prot_sg, prot_offset);
if (rc)
return rc;
}
target_complete_cmd(cmd, SAM_STAT_GOOD);
return 0;
}
@ -456,6 +599,23 @@ static sector_t rd_get_blocks(struct se_device *dev)
return blocks_long;
}
static int rd_init_prot(struct se_device *dev)
{
struct rd_dev *rd_dev = RD_DEV(dev);
if (!dev->dev_attrib.pi_prot_type)
return 0;
return rd_build_prot_space(rd_dev, dev->prot_length);
}
static void rd_free_prot(struct se_device *dev)
{
struct rd_dev *rd_dev = RD_DEV(dev);
rd_release_prot_space(rd_dev);
}
static struct sbc_ops rd_sbc_ops = {
.execute_rw = rd_execute_rw,
};
@ -481,6 +641,8 @@ static struct se_subsystem_api rd_mcp_template = {
.show_configfs_dev_params = rd_show_configfs_dev_params,
.get_device_type = sbc_get_device_type,
.get_blocks = rd_get_blocks,
.init_prot = rd_init_prot,
.free_prot = rd_free_prot,
};
int __init rd_module_init(void)

4
drivers/target/target_core_rd.h
View File

@ -33,8 +33,12 @@ struct rd_dev {
u32 rd_page_count;
/* Number of SG tables in sg_table_array */
u32 sg_table_count;
/* Number of SG tables in sg_prot_array */
u32 sg_prot_count;
/* Array of rd_dev_sg_table_t containing scatterlists */
struct rd_dev_sg_table *sg_table_array;
/* Array of rd_dev_sg_table containing protection scatterlists */
struct rd_dev_sg_table *sg_prot_array;
/* Ramdisk HBA device is connected to */
struct rd_host *rd_host;
} ____cacheline_aligned;

252
drivers/target/target_core_sbc.c
View File

@ -23,6 +23,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/ratelimit.h>
#include <linux/crc-t10dif.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_tcq.h>
@ -33,7 +34,7 @@
#include "target_core_internal.h"
#include "target_core_ua.h"
#include "target_core_alua.h"
static sense_reason_t
sbc_emulate_readcapacity(struct se_cmd *cmd)
@ -105,6 +106,11 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
buf[9] = (dev->dev_attrib.block_size >> 16) & 0xff;
buf[10] = (dev->dev_attrib.block_size >> 8) & 0xff;
buf[11] = dev->dev_attrib.block_size & 0xff;
/*
* Set P_TYPE and PROT_EN bits for DIF support
*/
if (dev->dev_attrib.pi_prot_type)
buf[12] = (dev->dev_attrib.pi_prot_type - 1) << 1 | 0x1;
if (dev->transport->get_lbppbe)
buf[13] = dev->transport->get_lbppbe(dev) & 0x0f;
@ -563,6 +569,44 @@ sbc_compare_and_write(struct se_cmd *cmd)
return TCM_NO_SENSE;
}
static bool
sbc_check_prot(struct se_device *dev, struct se_cmd *cmd, unsigned char *cdb,
u32 sectors)
{
if (!cmd->t_prot_sg || !cmd->t_prot_nents)
return true;
switch (dev->dev_attrib.pi_prot_type) {
case TARGET_DIF_TYPE3_PROT:
if (!(cdb[1] & 0xe0))
return true;
cmd->reftag_seed = 0xffffffff;
break;
case TARGET_DIF_TYPE2_PROT:
if (cdb[1] & 0xe0)
return false;
cmd->reftag_seed = cmd->t_task_lba;
break;
case TARGET_DIF_TYPE1_PROT:
if (!(cdb[1] & 0xe0))
return true;
cmd->reftag_seed = cmd->t_task_lba;
break;
case TARGET_DIF_TYPE0_PROT:
default:
return true;
}
cmd->prot_type = dev->dev_attrib.pi_prot_type;
cmd->prot_length = dev->prot_length * sectors;
cmd->prot_handover = PROT_SEPERATED;
return true;
}
sense_reason_t
sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
{
@ -583,6 +627,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case READ_10:
sectors = transport_get_sectors_10(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
cmd->execute_rw = ops->execute_rw;
cmd->execute_cmd = sbc_execute_rw;
@ -590,6 +638,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case READ_12:
sectors = transport_get_sectors_12(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
cmd->execute_rw = ops->execute_rw;
cmd->execute_cmd = sbc_execute_rw;
@ -597,6 +649,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case READ_16:
sectors = transport_get_sectors_16(cdb);
cmd->t_task_lba = transport_lba_64(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
cmd->execute_rw = ops->execute_rw;
cmd->execute_cmd = sbc_execute_rw;
@ -612,6 +668,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case WRITE_VERIFY:
sectors = transport_get_sectors_10(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
@ -621,6 +681,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case WRITE_12:
sectors = transport_get_sectors_12(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
@ -630,6 +694,10 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case WRITE_16:
sectors = transport_get_sectors_16(cdb);
cmd->t_task_lba = transport_lba_64(cdb);
if (!sbc_check_prot(dev, cmd, cdb, sectors))
return TCM_UNSUPPORTED_SCSI_OPCODE;
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
@ -731,6 +799,9 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case SAI_READ_CAPACITY_16:
cmd->execute_cmd = sbc_emulate_readcapacity_16;
break;
case SAI_REPORT_REFERRALS:
cmd->execute_cmd = target_emulate_report_referrals;
break;
default:
pr_err("Unsupported SA: 0x%02x\n",
cmd->t_task_cdb[1] & 0x1f);
@ -959,3 +1030,182 @@ err:
return ret;
}
EXPORT_SYMBOL(sbc_execute_unmap);
static sense_reason_t
sbc_dif_v1_verify(struct se_device *dev, struct se_dif_v1_tuple *sdt,
const void *p, sector_t sector, unsigned int ei_lba)
{
int block_size = dev->dev_attrib.block_size;
__be16 csum;
csum = cpu_to_be16(crc_t10dif(p, block_size));
if (sdt->guard_tag != csum) {
pr_err("DIFv1 checksum failed on sector %llu guard tag 0x%04x"
" csum 0x%04x\n", (unsigned long long)sector,
be16_to_cpu(sdt->guard_tag), be16_to_cpu(csum));
return TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
}
if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT &&
be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) {
pr_err("DIFv1 Type 1 reference failed on sector: %llu tag: 0x%08x"
" sector MSB: 0x%08x\n", (unsigned long long)sector,
be32_to_cpu(sdt->ref_tag), (u32)(sector & 0xffffffff));
return TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
}
if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE2_PROT &&
be32_to_cpu(sdt->ref_tag) != ei_lba) {
pr_err("DIFv1 Type 2 reference failed on sector: %llu tag: 0x%08x"
" ei_lba: 0x%08x\n", (unsigned long long)sector,
be32_to_cpu(sdt->ref_tag), ei_lba);
return TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
}
return 0;
}
static void
sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read,
struct scatterlist *sg, int sg_off)
{
struct se_device *dev = cmd->se_dev;
struct scatterlist *psg;
void *paddr, *addr;
unsigned int i, len, left;
left = sectors * dev->prot_length;
for_each_sg(cmd->t_prot_sg, psg, cmd->t_prot_nents, i) {
len = min(psg->length, left);
paddr = kmap_atomic(sg_page(psg)) + psg->offset;
addr = kmap_atomic(sg_page(sg)) + sg_off;
if (read)
memcpy(paddr, addr, len);
else
memcpy(addr, paddr, len);
left -= len;
kunmap_atomic(paddr);
kunmap_atomic(addr);
}
}
sense_reason_t
sbc_dif_verify_write(struct se_cmd *cmd, sector_t start, unsigned int sectors,
unsigned int ei_lba, struct scatterlist *sg, int sg_off)
{
struct se_device *dev = cmd->se_dev;
struct se_dif_v1_tuple *sdt;
struct scatterlist *dsg, *psg = cmd->t_prot_sg;
sector_t sector = start;
void *daddr, *paddr;
int i, j, offset = 0;
sense_reason_t rc;
for_each_sg(cmd->t_data_sg, dsg, cmd->t_data_nents, i) {
daddr = kmap_atomic(sg_page(dsg)) + dsg->offset;
paddr = kmap_atomic(sg_page(psg)) + psg->offset;
for (j = 0; j < dsg->length; j += dev->dev_attrib.block_size) {
if (offset >= psg->length) {
kunmap_atomic(paddr);
psg = sg_next(psg);
paddr = kmap_atomic(sg_page(psg)) + psg->offset;
offset = 0;
}
sdt = paddr + offset;
pr_debug("DIF WRITE sector: %llu guard_tag: 0x%04x"
" app_tag: 0x%04x ref_tag: %u\n",
(unsigned long long)sector, sdt->guard_tag,
sdt->app_tag, be32_to_cpu(sdt->ref_tag));
rc = sbc_dif_v1_verify(dev, sdt, daddr + j, sector,
ei_lba);
if (rc) {
kunmap_atomic(paddr);
kunmap_atomic(daddr);
cmd->bad_sector = sector;
return rc;
}
sector++;
ei_lba++;
offset += sizeof(struct se_dif_v1_tuple);
}
kunmap_atomic(paddr);
kunmap_atomic(daddr);
}
sbc_dif_copy_prot(cmd, sectors, false, sg, sg_off);
return 0;
}
EXPORT_SYMBOL(sbc_dif_verify_write);
sense_reason_t
sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors,
unsigned int ei_lba, struct scatterlist *sg, int sg_off)
{
struct se_device *dev = cmd->se_dev;
struct se_dif_v1_tuple *sdt;
struct scatterlist *dsg;
sector_t sector = start;
void *daddr, *paddr;
int i, j, offset = sg_off;
sense_reason_t rc;
for_each_sg(cmd->t_data_sg, dsg, cmd->t_data_nents, i) {
daddr = kmap_atomic(sg_page(dsg)) + dsg->offset;
paddr = kmap_atomic(sg_page(sg)) + sg->offset;
for (j = 0; j < dsg->length; j += dev->dev_attrib.block_size) {
if (offset >= sg->length) {
kunmap_atomic(paddr);
sg = sg_next(sg);
paddr = kmap_atomic(sg_page(sg)) + sg->offset;
offset = 0;
}
sdt = paddr + offset;
pr_debug("DIF READ sector: %llu guard_tag: 0x%04x"
" app_tag: 0x%04x ref_tag: %u\n",
(unsigned long long)sector, sdt->guard_tag,
sdt->app_tag, be32_to_cpu(sdt->ref_tag));
if (sdt->app_tag == cpu_to_be16(0xffff)) {
sector++;
offset += sizeof(struct se_dif_v1_tuple);
continue;
}
rc = sbc_dif_v1_verify(dev, sdt, daddr + j, sector,
ei_lba);
if (rc) {
kunmap_atomic(paddr);
kunmap_atomic(daddr);
cmd->bad_sector = sector;
return rc;
}
sector++;
ei_lba++;
offset += sizeof(struct se_dif_v1_tuple);
}
kunmap_atomic(paddr);
kunmap_atomic(daddr);
}
sbc_dif_copy_prot(cmd, sectors, true, sg, sg_off);
return 0;
}
EXPORT_SYMBOL(sbc_dif_verify_read);

114
drivers/target/target_core_spc.c
View File

@ -100,6 +100,11 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
*/
if (dev->dev_attrib.emulate_3pc)
buf[5] |= 0x8;
/*
* Set Protection (PROTECT) bit when DIF has been enabled.
*/
if (dev->dev_attrib.pi_prot_type)
buf[5] |= 0x1;
buf[7] = 0x2; /* CmdQue=1 */
@ -267,7 +272,7 @@ check_t10_vend_desc:
port = lun->lun_sep;
if (port) {
struct t10_alua_lu_gp *lu_gp;
u32 padding, scsi_name_len;
u32 padding, scsi_name_len, scsi_target_len;
u16 lu_gp_id = 0;
u16 tg_pt_gp_id = 0;
u16 tpgt;
@ -365,16 +370,6 @@ check_lu_gp:
* section 7.5.1 Table 362
*/
check_scsi_name:
scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg));
/* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */
scsi_name_len += 10;
/* Check for 4-byte padding */
padding = ((-scsi_name_len) & 3);
if (padding != 0)
scsi_name_len += padding;
/* Header size + Designation descriptor */
scsi_name_len += 4;
buf[off] =
(tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4);
buf[off++] |= 0x3; /* CODE SET == UTF-8 */
@ -402,13 +397,57 @@ check_scsi_name:
* shall be no larger than 256 and shall be a multiple
* of four.
*/
padding = ((-scsi_name_len) & 3);
if (padding)
scsi_name_len += padding;
if (scsi_name_len > 256)
scsi_name_len = 256;
buf[off-1] = scsi_name_len;
off += scsi_name_len;
/* Header size + Designation descriptor */
len += (scsi_name_len + 4);
/*
* Target device designator
*/
buf[off] =
(tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4);
buf[off++] |= 0x3; /* CODE SET == UTF-8 */
buf[off] = 0x80; /* Set PIV=1 */
/* Set ASSOCIATION == target device: 10b */
buf[off] |= 0x20;
/* DESIGNATOR TYPE == SCSI name string */
buf[off++] |= 0x8;
off += 2; /* Skip over Reserved and length */
/*
* SCSI name string identifer containing, $FABRIC_MOD
* dependent information. For LIO-Target and iSCSI
* Target Port, this means "<iSCSI name>" in
* UTF-8 encoding.
*/
scsi_target_len = sprintf(&buf[off], "%s",
tpg->se_tpg_tfo->tpg_get_wwn(tpg));
scsi_target_len += 1 /* Include NULL terminator */;
/*
* The null-terminated, null-padded (see 4.4.2) SCSI
* NAME STRING field contains a UTF-8 format string.
* The number of bytes in the SCSI NAME STRING field
* (i.e., the value in the DESIGNATOR LENGTH field)
* shall be no larger than 256 and shall be a multiple
* of four.
*/
padding = ((-scsi_target_len) & 3);
if (padding)
scsi_target_len += padding;
if (scsi_name_len > 256)
scsi_name_len = 256;
buf[off-1] = scsi_target_len;
off += scsi_target_len;
/* Header size + Designation descriptor */
len += (scsi_target_len + 4);
}
buf[2] = ((len >> 8) & 0xff);
buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */
@ -436,12 +475,26 @@ spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
struct se_device *dev = cmd->se_dev;
buf[3] = 0x3c;
/*
* Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK
* only for TYPE3 protection.
*/
if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT)
buf[4] = 0x5;
else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT)
buf[4] = 0x4;
/* Set HEADSUP, ORDSUP, SIMPSUP */
buf[5] = 0x07;
/* If WriteCache emulation is enabled, set V_SUP */
if (spc_check_dev_wce(dev))
buf[6] = 0x01;
/* If an LBA map is present set R_SUP */
spin_lock(&cmd->se_dev->t10_alua.lba_map_lock);
if (!list_empty(&dev->t10_alua.lba_map_list))
buf[8] = 0x10;
spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock);
return 0;
}
@ -600,6 +653,20 @@ spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
return 0;
}
/* Referrals VPD page */
static sense_reason_t
spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
buf[0] = dev->transport->get_device_type(dev);
buf[3] = 0x0c;
put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]);
put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[12]);
return 0;
}
static sense_reason_t
spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf);
@ -614,6 +681,7 @@ static struct {
{ .page = 0xb0, .emulate = spc_emulate_evpd_b0 },
{ .page = 0xb1, .emulate = spc_emulate_evpd_b1 },
{ .page = 0xb2, .emulate = spc_emulate_evpd_b2 },
{ .page = 0xb3, .emulate = spc_emulate_evpd_b3 },
};
/* supported vital product data pages */
@ -643,11 +711,15 @@ spc_emulate_inquiry(struct se_cmd *cmd)
struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg;
unsigned char *rbuf;
unsigned char *cdb = cmd->t_task_cdb;
unsigned char buf[SE_INQUIRY_BUF];
unsigned char *buf;
sense_reason_t ret;
int p;
memset(buf, 0, SE_INQUIRY_BUF);
buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL);
if (!buf) {
pr_err("Unable to allocate response buffer for INQUIRY\n");
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
if (dev == tpg->tpg_virt_lun0.lun_se_dev)
buf[0] = 0x3f; /* Not connected */
@ -680,9 +752,10 @@ spc_emulate_inquiry(struct se_cmd *cmd)
out:
rbuf = transport_kmap_data_sg(cmd);
if (rbuf) {
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
memcpy(rbuf, buf, min_t(u32, SE_INQUIRY_BUF, cmd->data_length));
transport_kunmap_data_sg(cmd);
}
kfree(buf);
if (!ret)
target_complete_cmd(cmd, GOOD);
@ -785,6 +858,19 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p)
* status (see SAM-4).
*/
p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00;
/*
* From spc4r30, section 7.5.7 Control mode page
*
* Application Tag Owner (ATO) bit set to one.
*
* If the ATO bit is set to one the device server shall not modify the
* LOGICAL BLOCK APPLICATION TAG field and, depending on the protection
* type, shall not modify the contents of the LOGICAL BLOCK REFERENCE
* TAG field.
*/
if (dev->dev_attrib.pi_prot_type)
p[5] |= 0x80;
p[8] = 0xff;
p[9] = 0xff;
p[11] = 30;

10
drivers/target/target_core_tpg.c
View File

@ -656,7 +656,7 @@ static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
spin_lock_init(&lun->lun_sep_lock);
init_completion(&lun->lun_ref_comp);
ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev);
ret = core_tpg_add_lun(se_tpg, lun, lun_access, dev);
if (ret < 0)
return ret;
@ -781,7 +781,7 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
}
EXPORT_SYMBOL(core_tpg_deregister);
struct se_lun *core_tpg_pre_addlun(
struct se_lun *core_tpg_alloc_lun(
struct se_portal_group *tpg,
u32 unpacked_lun)
{
@ -811,11 +811,11 @@ struct se_lun *core_tpg_pre_addlun(
return lun;
}
int core_tpg_post_addlun(
int core_tpg_add_lun(
struct se_portal_group *tpg,
struct se_lun *lun,
u32 lun_access,
void *lun_ptr)
struct se_device *dev)
{
int ret;
@ -823,7 +823,7 @@ int core_tpg_post_addlun(
if (ret < 0)
return ret;
ret = core_dev_export(lun_ptr, tpg, lun);
ret = core_dev_export(dev, tpg, lun);
if (ret < 0) {
percpu_ref_cancel_init(&lun->lun_ref);
return ret;

95
drivers/target/target_core_transport.c
View File

@ -62,6 +62,8 @@ struct kmem_cache *t10_alua_lu_gp_cache;
struct kmem_cache *t10_alua_lu_gp_mem_cache;
struct kmem_cache *t10_alua_tg_pt_gp_cache;
struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
struct kmem_cache *t10_alua_lba_map_cache;
struct kmem_cache *t10_alua_lba_map_mem_cache;
static void transport_complete_task_attr(struct se_cmd *cmd);
static void transport_handle_queue_full(struct se_cmd *cmd,
@ -128,14 +130,36 @@ int init_se_kmem_caches(void)
"mem_t failed\n");
goto out_free_tg_pt_gp_cache;
}
t10_alua_lba_map_cache = kmem_cache_create(
"t10_alua_lba_map_cache",
sizeof(struct t10_alua_lba_map),
__alignof__(struct t10_alua_lba_map), 0, NULL);
if (!t10_alua_lba_map_cache) {
pr_err("kmem_cache_create() for t10_alua_lba_map_"
"cache failed\n");
goto out_free_tg_pt_gp_mem_cache;
}
t10_alua_lba_map_mem_cache = kmem_cache_create(
"t10_alua_lba_map_mem_cache",
sizeof(struct t10_alua_lba_map_member),
__alignof__(struct t10_alua_lba_map_member), 0, NULL);
if (!t10_alua_lba_map_mem_cache) {
pr_err("kmem_cache_create() for t10_alua_lba_map_mem_"
"cache failed\n");
goto out_free_lba_map_cache;
}
target_completion_wq = alloc_workqueue("target_completion",
WQ_MEM_RECLAIM, 0);
if (!target_completion_wq)
goto out_free_tg_pt_gp_mem_cache;
goto out_free_lba_map_mem_cache;
return 0;
out_free_lba_map_mem_cache:
kmem_cache_destroy(t10_alua_lba_map_mem_cache);
out_free_lba_map_cache:
kmem_cache_destroy(t10_alua_lba_map_cache);
out_free_tg_pt_gp_mem_cache:
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
out_free_tg_pt_gp_cache:
@ -164,6 +188,8 @@ void release_se_kmem_caches(void)
kmem_cache_destroy(t10_alua_lu_gp_mem_cache);
kmem_cache_destroy(t10_alua_tg_pt_gp_cache);
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
kmem_cache_destroy(t10_alua_lba_map_cache);
kmem_cache_destroy(t10_alua_lba_map_mem_cache);
}
/* This code ensures unique mib indexes are handed out. */
@ -568,10 +594,11 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd)
{
struct se_lun *lun = cmd->se_lun;
if (!lun || !cmd->lun_ref_active)
if (!lun)
return;
percpu_ref_put(&lun->lun_ref);
if (cmpxchg(&cmd->lun_ref_active, true, false))
percpu_ref_put(&lun->lun_ref);
}
void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
@ -1284,6 +1311,8 @@ transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *sgl,
* @sgl_count: scatterlist count for unidirectional mapping
* @sgl_bidi: struct scatterlist memory for bidirectional READ mapping
* @sgl_bidi_count: scatterlist count for bidirectional READ mapping
* @sgl_prot: struct scatterlist memory protection information
* @sgl_prot_count: scatterlist count for protection information
*
* Returns non zero to signal active I/O shutdown failure. All other
* setup exceptions will be returned as a SCSI CHECK_CONDITION response,
@ -1296,7 +1325,8 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
unsigned char *cdb, unsigned char *sense, u32 unpacked_lun,
u32 data_length, int task_attr, int data_dir, int flags,
struct scatterlist *sgl, u32 sgl_count,
struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
struct scatterlist *sgl_bidi, u32 sgl_bidi_count,
struct scatterlist *sgl_prot, u32 sgl_prot_count)
{
struct se_portal_group *se_tpg;
sense_reason_t rc;
@ -1338,6 +1368,14 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
target_put_sess_cmd(se_sess, se_cmd);
return 0;
}
/*
* Save pointers for SGLs containing protection information,
* if present.
*/
if (sgl_prot_count) {
se_cmd->t_prot_sg = sgl_prot;
se_cmd->t_prot_nents = sgl_prot_count;
}
rc = target_setup_cmd_from_cdb(se_cmd, cdb);
if (rc != 0) {
@ -1380,6 +1418,7 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
return 0;
}
}
/*
* Check if we need to delay processing because of ALUA
* Active/NonOptimized primary access state..
@ -1419,7 +1458,7 @@ int target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
{
return target_submit_cmd_map_sgls(se_cmd, se_sess, cdb, sense,
unpacked_lun, data_length, task_attr, data_dir,
flags, NULL, 0, NULL, 0);
flags, NULL, 0, NULL, 0, NULL, 0);
}
EXPORT_SYMBOL(target_submit_cmd);
@ -2455,6 +2494,19 @@ static int transport_get_sense_codes(
return 0;
}
static
void transport_err_sector_info(unsigned char *buffer, sector_t bad_sector)
{
/* Place failed LBA in sense data information descriptor 0. */
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 0xc;
buffer[SPC_DESC_TYPE_OFFSET] = 0; /* Information */
buffer[SPC_ADDITIONAL_DESC_LEN_OFFSET] = 0xa;
buffer[SPC_VALIDITY_OFFSET] = 0x80;
/* Descriptor Information: failing sector */
put_unaligned_be64(bad_sector, &buffer[12]);
}
int
transport_send_check_condition_and_sense(struct se_cmd *cmd,
sense_reason_t reason, int from_transport)
@ -2648,6 +2700,39 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd,
buffer[SPC_ASC_KEY_OFFSET] = 0x1d;
buffer[SPC_ASCQ_KEY_OFFSET] = 0x00;
break;
case TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED:
/* CURRENT ERROR */
buffer[0] = 0x70;
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* LOGICAL BLOCK GUARD CHECK FAILED */
buffer[SPC_ASC_KEY_OFFSET] = 0x10;
buffer[SPC_ASCQ_KEY_OFFSET] = 0x01;
transport_err_sector_info(buffer, cmd->bad_sector);
break;
case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED:
/* CURRENT ERROR */
buffer[0] = 0x70;
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* LOGICAL BLOCK APPLICATION TAG CHECK FAILED */
buffer[SPC_ASC_KEY_OFFSET] = 0x10;
buffer[SPC_ASCQ_KEY_OFFSET] = 0x02;
transport_err_sector_info(buffer, cmd->bad_sector);
break;
case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED:
/* CURRENT ERROR */
buffer[0] = 0x70;
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */
buffer[SPC_ASC_KEY_OFFSET] = 0x10;
buffer[SPC_ASCQ_KEY_OFFSET] = 0x03;
transport_err_sector_info(buffer, cmd->bad_sector);
break;
case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
default:
/* CURRENT ERROR */

1
drivers/target/target_core_ua.c
View File

@ -98,7 +98,6 @@ int core_scsi3_ua_allocate(
pr_err("Unable to allocate struct se_ua\n");
return -ENOMEM;
}
INIT_LIST_HEAD(&ua->ua_dev_list);
INIT_LIST_HEAD(&ua->ua_nacl_list);
ua->ua_nacl = nacl;

4
drivers/target/target_core_xcopy.c
View File

@ -39,10 +39,6 @@
#include "target_core_xcopy.h"
static struct workqueue_struct *xcopy_wq = NULL;
/*
* From target_core_spc.c
*/
extern void spc_parse_naa_6h_vendor_specific(struct se_device *, unsigned char *);
/*
* From target_core_device.c
*/

2
drivers/target/tcm_fc/tfc_cmd.c
View File

@ -438,7 +438,7 @@ static void ft_recv_cmd(struct ft_sess *sess, struct fc_frame *fp)
struct se_session *se_sess = sess->se_sess;
int tag;
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC);
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
if (tag < 0)
goto busy;

6
drivers/target/tcm_fc/tfc_conf.c
View File

@ -267,7 +267,7 @@ struct ft_node_acl *ft_acl_get(struct ft_tpg *tpg, struct fc_rport_priv *rdata)
return found;
}
struct se_node_acl *ft_tpg_alloc_fabric_acl(struct se_portal_group *se_tpg)
static struct se_node_acl *ft_tpg_alloc_fabric_acl(struct se_portal_group *se_tpg)
{
struct ft_node_acl *acl;
@ -552,7 +552,7 @@ static struct target_core_fabric_ops ft_fabric_ops = {
.fabric_drop_nodeacl = &ft_del_acl,
};
int ft_register_configfs(void)
static int ft_register_configfs(void)
{
struct target_fabric_configfs *fabric;
int ret;
@ -599,7 +599,7 @@ int ft_register_configfs(void)
return 0;
}
void ft_deregister_configfs(void)
static void ft_deregister_configfs(void)
{
if (!ft_configfs)
return;

4
drivers/vhost/scsi.c
View File

@ -728,7 +728,7 @@ vhost_scsi_get_tag(struct vhost_virtqueue *vq,
}
se_sess = tv_nexus->tvn_se_sess;
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC);
tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
if (tag < 0) {
pr_err("Unable to obtain tag for tcm_vhost_cmd\n");
return ERR_PTR(-ENOMEM);
@ -889,7 +889,7 @@ static void tcm_vhost_submission_work(struct work_struct *work)
cmd->tvc_lun, cmd->tvc_exp_data_len,
cmd->tvc_task_attr, cmd->tvc_data_direction,
TARGET_SCF_ACK_KREF, sg_ptr, cmd->tvc_sgl_count,
sg_bidi_ptr, sg_no_bidi);
sg_bidi_ptr, sg_no_bidi, NULL, 0);
if (rc < 0) {
transport_send_check_condition_and_sense(se_cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);

3
include/linux/percpu_ida.h
View File

@ -4,6 +4,7 @@
#include <linux/types.h>
#include <linux/bitops.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/spinlock_types.h>
#include <linux/wait.h>
#include <linux/cpumask.h>
@ -61,7 +62,7 @@ struct percpu_ida {
/* Max size of percpu freelist, */
#define IDA_DEFAULT_PCPU_SIZE ((IDA_DEFAULT_PCPU_BATCH_MOVE * 3) / 2)
int percpu_ida_alloc(struct percpu_ida *pool, gfp_t gfp);
int percpu_ida_alloc(struct percpu_ida *pool, int state);
void percpu_ida_free(struct percpu_ida *pool, unsigned tag);
void percpu_ida_destroy(struct percpu_ida *pool);

1
include/scsi/scsi.h
View File

@ -155,6 +155,7 @@ enum scsi_timeouts {
/* values for service action in */
#define SAI_READ_CAPACITY_16 0x10
#define SAI_GET_LBA_STATUS 0x12
#define SAI_REPORT_REFERRALS 0x13
/* values for VARIABLE_LENGTH_CMD service action codes
* see spc4r17 Section D.3.5, table D.7 and D.8 */
#define VLC_SA_RECEIVE_CREDENTIAL 0x1800

2
include/target/iscsi/iscsi_transport.h
View File

@ -94,7 +94,7 @@ extern int iscsit_tmr_post_handler(struct iscsi_cmd *, struct iscsi_conn *);
/*
* From iscsi_target_util.c
*/
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int);
extern int iscsit_sequence_cmd(struct iscsi_conn *, struct iscsi_cmd *,
unsigned char *, __be32);
extern void iscsit_release_cmd(struct iscsi_cmd *);

7
include/target/target_core_backend.h
View File

@ -41,6 +41,9 @@ struct se_subsystem_api {
unsigned int (*get_io_opt)(struct se_device *);
unsigned char *(*get_sense_buffer)(struct se_cmd *);
bool (*get_write_cache)(struct se_device *);
int (*init_prot)(struct se_device *);
int (*format_prot)(struct se_device *);
void (*free_prot)(struct se_device *);
};
struct sbc_ops {
@ -70,6 +73,10 @@ sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
sector_t lba, sector_t nolb),
void *priv);
sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);

82
include/target/target_core_base.h
View File

@ -37,6 +37,9 @@
/* Used by transport_send_check_condition_and_sense() */
#define SPC_SENSE_KEY_OFFSET 2
#define SPC_ADD_SENSE_LEN_OFFSET 7
#define SPC_DESC_TYPE_OFFSET 8
#define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
#define SPC_VALIDITY_OFFSET 10
#define SPC_ASC_KEY_OFFSET 12
#define SPC_ASCQ_KEY_OFFSET 13
#define TRANSPORT_IQN_LEN 224
@ -112,7 +115,7 @@
/* Queue Algorithm Modifier default for restricted reordering in control mode page */
#define DA_EMULATE_REST_REORD 0
#define SE_INQUIRY_BUF 512
#define SE_INQUIRY_BUF 1024
#define SE_MODE_PAGE_BUF 512
#define SE_SENSE_BUF 96
@ -205,6 +208,9 @@ enum tcm_sense_reason_table {
TCM_OUT_OF_RESOURCES = R(0x12),
TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
TCM_MISCOMPARE_VERIFY = R(0x14),
TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
#undef R
};
@ -247,10 +253,28 @@ typedef enum {
struct se_cmd;
struct t10_alua_lba_map_member {
struct list_head lba_map_mem_list;
int lba_map_mem_alua_state;
int lba_map_mem_alua_pg_id;
};
struct t10_alua_lba_map {
u64 lba_map_first_lba;
u64 lba_map_last_lba;
struct list_head lba_map_list;
struct list_head lba_map_mem_list;
};
struct t10_alua {
/* ALUA Target Port Group ID */
u16 alua_tg_pt_gps_counter;
u32 alua_tg_pt_gps_count;
/* Referrals support */
spinlock_t lba_map_lock;
u32 lba_map_segment_size;
u32 lba_map_segment_multiplier;
struct list_head lba_map_list;
spinlock_t tg_pt_gps_lock;
struct se_device *t10_dev;
/* Used for default ALUA Target Port Group */
@ -284,6 +308,8 @@ struct t10_alua_tg_pt_gp {
u16 tg_pt_gp_id;
int tg_pt_gp_valid_id;
int tg_pt_gp_alua_supported_states;
int tg_pt_gp_alua_pending_state;
int tg_pt_gp_alua_previous_state;
int tg_pt_gp_alua_access_status;
int tg_pt_gp_alua_access_type;
int tg_pt_gp_nonop_delay_msecs;
@ -291,9 +317,6 @@ struct t10_alua_tg_pt_gp {
int tg_pt_gp_implicit_trans_secs;
int tg_pt_gp_pref;
int tg_pt_gp_write_metadata;
/* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
#define ALUA_MD_BUF_LEN 1024
u32 tg_pt_gp_md_buf_len;
u32 tg_pt_gp_members;
atomic_t tg_pt_gp_alua_access_state;
atomic_t tg_pt_gp_ref_cnt;
@ -303,6 +326,10 @@ struct t10_alua_tg_pt_gp {
struct config_group tg_pt_gp_group;
struct list_head tg_pt_gp_list;
struct list_head tg_pt_gp_mem_list;
struct se_port *tg_pt_gp_alua_port;
struct se_node_acl *tg_pt_gp_alua_nacl;
struct delayed_work tg_pt_gp_transition_work;
struct completion *tg_pt_gp_transition_complete;
};
struct t10_alua_tg_pt_gp_member {
@ -414,6 +441,34 @@ struct se_tmr_req {
struct list_head tmr_list;
};
enum target_prot_op {
TARGET_PROT_NORMAL = 0,
TARGET_PROT_DIN_INSERT,
TARGET_PROT_DOUT_INSERT,
TARGET_PROT_DIN_STRIP,
TARGET_PROT_DOUT_STRIP,
TARGET_PROT_DIN_PASS,
TARGET_PROT_DOUT_PASS,
};
enum target_prot_ho {
PROT_SEPERATED,
PROT_INTERLEAVED,
};
enum target_prot_type {
TARGET_DIF_TYPE0_PROT,
TARGET_DIF_TYPE1_PROT,
TARGET_DIF_TYPE2_PROT,
TARGET_DIF_TYPE3_PROT,
};
struct se_dif_v1_tuple {
__be16 guard_tag;
__be16 app_tag;
__be32 ref_tag;
};
struct se_cmd {
/* SAM response code being sent to initiator */
u8 scsi_status;
@ -497,14 +552,24 @@ struct se_cmd {
void *priv;
/* Used for lun->lun_ref counting */
bool lun_ref_active;
int lun_ref_active;
/* DIF related members */
enum target_prot_op prot_op;
enum target_prot_type prot_type;
u32 prot_length;
u32 reftag_seed;
struct scatterlist *t_prot_sg;
unsigned int t_prot_nents;
enum target_prot_ho prot_handover;
sense_reason_t pi_err;
sector_t bad_sector;
};
struct se_ua {
u8 ua_asc;
u8 ua_ascq;
struct se_node_acl *ua_nacl;
struct list_head ua_dev_list;
struct list_head ua_nacl_list;
};
@ -605,6 +670,9 @@ struct se_dev_attrib {
int emulate_tpws;
int emulate_caw;
int emulate_3pc;
int pi_prot_format;
enum target_prot_type pi_prot_type;
enum target_prot_type hw_pi_prot_type;
int enforce_pr_isids;
int is_nonrot;
int emulate_rest_reord;
@ -736,6 +804,8 @@ struct se_device {
/* Linked list for struct se_hba struct se_device list */
struct list_head dev_list;
struct se_lun xcopy_lun;
/* Protection Information */
int prot_length;
};
struct se_hba {

3
include/target/target_core_fabric.h
View File

@ -105,7 +105,8 @@ sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *,
unsigned char *, unsigned char *, u32, u32, int, int, int,
struct scatterlist *, u32, struct scatterlist *, u32);
struct scatterlist *, u32, struct scatterlist *, u32,
struct scatterlist *, u32);
int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
unsigned char *, u32, u32, int, int, int);
int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,

21
lib/percpu_ida.c
View File

@ -132,22 +132,22 @@ static inline unsigned alloc_local_tag(struct percpu_ida_cpu *tags)
/**
* percpu_ida_alloc - allocate a tag
* @pool: pool to allocate from
* @gfp: gfp flags
* @state: task state for prepare_to_wait
*
* Returns a tag - an integer in the range [0..nr_tags) (passed to
* tag_pool_init()), or otherwise -ENOSPC on allocation failure.
*
* Safe to be called from interrupt context (assuming it isn't passed
* __GFP_WAIT, of course).
* TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, of course).
*
* @gfp indicates whether or not to wait until a free id is available (it's not
* used for internal memory allocations); thus if passed __GFP_WAIT we may sleep
* however long it takes until another thread frees an id (same semantics as a
* mempool).
*
* Will not fail if passed __GFP_WAIT.
* Will not fail if passed TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE.
*/
int percpu_ida_alloc(struct percpu_ida *pool, gfp_t gfp)
int percpu_ida_alloc(struct percpu_ida *pool, int state)
{
DEFINE_WAIT(wait);
struct percpu_ida_cpu *tags;
@ -174,7 +174,8 @@ int percpu_ida_alloc(struct percpu_ida *pool, gfp_t gfp)
*
* global lock held and irqs disabled, don't need percpu lock
*/
prepare_to_wait(&pool->wait, &wait, TASK_UNINTERRUPTIBLE);
if (state != TASK_RUNNING)
prepare_to_wait(&pool->wait, &wait, state);
if (!tags->nr_free)
alloc_global_tags(pool, tags);
@ -191,16 +192,22 @@ int percpu_ida_alloc(struct percpu_ida *pool, gfp_t gfp)
spin_unlock(&pool->lock);
local_irq_restore(flags);
if (tag >= 0 || !(gfp & __GFP_WAIT))
if (tag >= 0 || state == TASK_RUNNING)
break;
if (signal_pending_state(state, current)) {
tag = -ERESTARTSYS;
break;
}
schedule();
local_irq_save(flags);
tags = this_cpu_ptr(pool->tag_cpu);
}
if (state != TASK_RUNNING)
finish_wait(&pool->wait, &wait);
finish_wait(&pool->wait, &wait);
return tag;
}
EXPORT_SYMBOL_GPL(percpu_ida_alloc);