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Commit ed55635e authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 

Pull SCSI target fixes from Nicholas Bellinger:
 "The highlights this merge window include:

   - Allow target fabric drivers to function as built-in.  (Roland)
   - Fix tcm_loop multi-TPG endpoint nexus bug.  (Hannes)
   - Move per device config_item_type into se_subsystem_api, allowing
     configfs attributes to be defined at module_init time.  (Jerome +
     nab)
   - Convert existing IBLOCK/FILEIO/RAMDISK/PSCSI/TCMU drivers to use
     external configfs attributes.  (nab)
   - A number of iser-target fixes related to active session + network
     portal shutdown stability during extended stress testing.  (Sagi +
     Slava)
   - Dynamic allocation of T10-PI contexts for iser-target, fixing a
     potentially bogus iscsi_np->tpg_np pointer reference in >= v3.14
     code.  (Sagi)
   - iser-target performance + scalability improvements.  (Sagi)
   - Fixes for SPC-4 Persistent Reservation AllRegistrants spec
     compliance.  (Ilias + James + nab)
   - Avoid potential short kern_sendmsg() in iscsi-target for now until
     Al's conversion to use msghdr iteration is merged post -rc1.
     (Viro)

  Also, Sagi has requested a number of iser-target patches (9) that
  address stability issues he's encountered during extended stress
  testing be considered for v3.10.y + v3.14.y code.  Given the amount of
  LOC involved, it will certainly require extra backporting effort.

  Apologies in advance to Greg-KH & Co on this.  Sagi and I will be
  working post-merge to ensure they each get applied correctly"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (53 commits)
  target: Allow AllRegistrants to re-RESERVE existing reservation
  uapi/linux/target_core_user.h: fix headers_install.sh badness
  iscsi-target: Fail connection on short sendmsg writes
  iscsi-target: nullify session in failed login sequence
  target: Avoid dropping AllRegistrants reservation during unregister
  target: Fix R_HOLDER bit usage for AllRegistrants
  iscsi-target: Drop left-over bogus iscsi_np->tpg_np
  iser-target: Fix wc->wr_id cast warning
  iser-target: Remove code duplication
  iser-target: Adjust log levels and prettify some prints
  iser-target: Use debug_level parameter to control logging level
  iser-target: Fix logout sequence
  iser-target: Don't wait for session commands from completion context
  iser-target: Reduce CQ lock contention by batch polling
  iser-target: Introduce isert_poll_budget
  iser-target: Remove an atomic operation from the IO path
  iser-target: Remove redundant call to isert_conn_terminate
  iser-target: Use single CQ for TX and RX
  iser-target: Centralize completion elements to a context
  iser-target: Cast wr_id with uintptr_t instead of unsinged long
  ...
parents 5be95b7e ae450e24
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Showing with 1511 additions and 1238 deletions
drivers/infiniband/ulp/isert/ib_isert.c
View file @ ed55635e
......@@ -22,7 +22,6 @@
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/llist.h>
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
#include <target/target_core_base.h>
......@@ -36,11 +35,17 @@
#define ISERT_MAX_CONN 8
#define ISER_MAX_RX_CQ_LEN (ISERT_QP_MAX_RECV_DTOS * ISERT_MAX_CONN)
#define ISER_MAX_TX_CQ_LEN (ISERT_QP_MAX_REQ_DTOS * ISERT_MAX_CONN)
#define ISER_MAX_CQ_LEN (ISER_MAX_RX_CQ_LEN + ISER_MAX_TX_CQ_LEN + \
ISERT_MAX_CONN)
int isert_debug_level = 0;
module_param_named(debug_level, isert_debug_level, int, 0644);
MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:0)");
static DEFINE_MUTEX(device_list_mutex);
static LIST_HEAD(device_list);
static struct workqueue_struct *isert_rx_wq;
static struct workqueue_struct *isert_comp_wq;
static struct workqueue_struct *isert_release_wq;
static void
isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn);
......@@ -54,19 +59,32 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);
static int
isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd);
static int
isert_rdma_post_recvl(struct isert_conn *isert_conn);
static int
isert_rdma_accept(struct isert_conn *isert_conn);
struct rdma_cm_id *isert_setup_id(struct isert_np *isert_np);
static inline bool
isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd)
{
return (conn->pi_support &&
cmd->prot_op != TARGET_PROT_NORMAL);
}
static void
isert_qp_event_callback(struct ib_event *e, void *context)
{
struct isert_conn *isert_conn = (struct isert_conn *)context;
pr_err("isert_qp_event_callback event: %d\n", e->event);
isert_err("conn %p event: %d\n", isert_conn, e->event);
switch (e->event) {
case IB_EVENT_COMM_EST:
rdma_notify(isert_conn->conn_cm_id, IB_EVENT_COMM_EST);
break;
case IB_EVENT_QP_LAST_WQE_REACHED:
pr_warn("Reached TX IB_EVENT_QP_LAST_WQE_REACHED:\n");
isert_warn("Reached TX IB_EVENT_QP_LAST_WQE_REACHED\n");
break;
default:
break;
......@@ -80,39 +98,41 @@ isert_query_device(struct ib_device *ib_dev, struct ib_device_attr *devattr)
ret = ib_query_device(ib_dev, devattr);
if (ret) {
pr_err("ib_query_device() failed: %d\n", ret);
isert_err("ib_query_device() failed: %d\n", ret);
return ret;
}
pr_debug("devattr->max_sge: %d\n", devattr->max_sge);
pr_debug("devattr->max_sge_rd: %d\n", devattr->max_sge_rd);
isert_dbg("devattr->max_sge: %d\n", devattr->max_sge);
isert_dbg("devattr->max_sge_rd: %d\n", devattr->max_sge_rd);
return 0;
}
static int
isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id,
u8 protection)
isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id)
{
struct isert_device *device = isert_conn->conn_device;
struct ib_qp_init_attr attr;
int ret, index, min_index = 0;
struct isert_comp *comp;
int ret, i, min = 0;
mutex_lock(&device_list_mutex);
for (index = 0; index < device->cqs_used; index++)
if (device->cq_active_qps[index] <
device->cq_active_qps[min_index])
min_index = index;
device->cq_active_qps[min_index]++;
pr_debug("isert_conn_setup_qp: Using min_index: %d\n", min_index);
for (i = 0; i < device->comps_used; i++)
if (device->comps[i].active_qps <
device->comps[min].active_qps)
min = i;
comp = &device->comps[min];
comp->active_qps++;
isert_info("conn %p, using comp %p min_index: %d\n",
isert_conn, comp, min);
mutex_unlock(&device_list_mutex);
memset(&attr, 0, sizeof(struct ib_qp_init_attr));
attr.event_handler = isert_qp_event_callback;
attr.qp_context = isert_conn;
attr.send_cq = device->dev_tx_cq[min_index];
attr.recv_cq = device->dev_rx_cq[min_index];
attr.send_cq = comp->cq;
attr.recv_cq = comp->cq;
attr.cap.max_send_wr = ISERT_QP_MAX_REQ_DTOS;
attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS;
attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1;
/*
* FIXME: Use devattr.max_sge - 2 for max_send_sge as
* work-around for RDMA_READs with ConnectX-2.
......@@ -126,29 +146,29 @@ isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id,
attr.cap.max_recv_sge = 1;
attr.sq_sig_type = IB_SIGNAL_REQ_WR;
attr.qp_type = IB_QPT_RC;
if (protection)
if (device->pi_capable)
attr.create_flags |= IB_QP_CREATE_SIGNATURE_EN;
pr_debug("isert_conn_setup_qp cma_id->device: %p\n",
cma_id->device);
pr_debug("isert_conn_setup_qp conn_pd->device: %p\n",
isert_conn->conn_pd->device);
ret = rdma_create_qp(cma_id, isert_conn->conn_pd, &attr);
if (ret) {
pr_err("rdma_create_qp failed for cma_id %d\n", ret);
return ret;
isert_err("rdma_create_qp failed for cma_id %d\n", ret);
goto err;
}
isert_conn->conn_qp = cma_id->qp;
pr_debug("rdma_create_qp() returned success >>>>>>>>>>>>>>>>>>>>>>>>>.\n");
return 0;
err:
mutex_lock(&device_list_mutex);
comp->active_qps--;
mutex_unlock(&device_list_mutex);
return ret;
}
static void
isert_cq_event_callback(struct ib_event *e, void *context)
{
pr_debug("isert_cq_event_callback event: %d\n", e->event);
isert_dbg("event: %d\n", e->event);
}
static int
......@@ -182,6 +202,7 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn)
}
isert_conn->conn_rx_desc_head = 0;
return 0;
dma_map_fail:
......@@ -193,6 +214,8 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn)
kfree(isert_conn->conn_rx_descs);
isert_conn->conn_rx_descs = NULL;
fail:
isert_err("conn %p failed to allocate rx descriptors\n", isert_conn);
return -ENOMEM;
}
......@@ -216,27 +239,23 @@ isert_free_rx_descriptors(struct isert_conn *isert_conn)
isert_conn->conn_rx_descs = NULL;
}
static void isert_cq_tx_work(struct work_struct *);
static void isert_cq_tx_callback(struct ib_cq *, void *);
static void isert_cq_rx_work(struct work_struct *);
static void isert_cq_rx_callback(struct ib_cq *, void *);
static void isert_cq_work(struct work_struct *);
static void isert_cq_callback(struct ib_cq *, void *);
static int
isert_create_device_ib_res(struct isert_device *device)
{
struct ib_device *ib_dev = device->ib_device;
struct isert_cq_desc *cq_desc;
struct ib_device_attr *dev_attr;
int ret = 0, i, j;
int max_rx_cqe, max_tx_cqe;
int ret = 0, i;
int max_cqe;
dev_attr = &device->dev_attr;
ret = isert_query_device(ib_dev, dev_attr);
if (ret)
return ret;
max_rx_cqe = min(ISER_MAX_RX_CQ_LEN, dev_attr->max_cqe);
max_tx_cqe = min(ISER_MAX_TX_CQ_LEN, dev_attr->max_cqe);
max_cqe = min(ISER_MAX_CQ_LEN, dev_attr->max_cqe);
/* asign function handlers */
if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS &&
......@@ -254,55 +273,38 @@ isert_create_device_ib_res(struct isert_device *device)
device->pi_capable = dev_attr->device_cap_flags &
IB_DEVICE_SIGNATURE_HANDOVER ? true : false;
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 "
device->comps_used = min(ISERT_MAX_CQ, min_t(int, num_online_cpus(),
device->ib_device->num_comp_vectors));
isert_info("Using %d CQs, %s supports %d vectors support "
"Fast registration %d pi_capable %d\n",
device->cqs_used, device->ib_device->name,
device->comps_used, device->ib_device->name,
device->ib_device->num_comp_vectors, device->use_fastreg,
device->pi_capable);
device->cq_desc = kzalloc(sizeof(struct isert_cq_desc) *
device->cqs_used, GFP_KERNEL);
if (!device->cq_desc) {
pr_err("Unable to allocate device->cq_desc\n");
device->comps = kcalloc(device->comps_used, sizeof(struct isert_comp),
GFP_KERNEL);
if (!device->comps) {
isert_err("Unable to allocate completion contexts\n");
return -ENOMEM;
}
cq_desc = device->cq_desc;
for (i = 0; i < device->cqs_used; i++) {
cq_desc[i].device = device;
cq_desc[i].cq_index = i;
INIT_WORK(&cq_desc[i].cq_rx_work, isert_cq_rx_work);
device->dev_rx_cq[i] = ib_create_cq(device->ib_device,
isert_cq_rx_callback,
isert_cq_event_callback,
(void *)&cq_desc[i],
max_rx_cqe, i);
if (IS_ERR(device->dev_rx_cq[i])) {
ret = PTR_ERR(device->dev_rx_cq[i]);
device->dev_rx_cq[i] = NULL;
goto out_cq;
}
for (i = 0; i < device->comps_used; i++) {
struct isert_comp *comp = &device->comps[i];
INIT_WORK(&cq_desc[i].cq_tx_work, isert_cq_tx_work);
device->dev_tx_cq[i] = ib_create_cq(device->ib_device,
isert_cq_tx_callback,
comp->device = device;
INIT_WORK(&comp->work, isert_cq_work);
comp->cq = ib_create_cq(device->ib_device,
isert_cq_callback,
isert_cq_event_callback,
(void *)&cq_desc[i],
max_tx_cqe, i);
if (IS_ERR(device->dev_tx_cq[i])) {
ret = PTR_ERR(device->dev_tx_cq[i]);
device->dev_tx_cq[i] = NULL;
(void *)comp,
max_cqe, i);
if (IS_ERR(comp->cq)) {
ret = PTR_ERR(comp->cq);
comp->cq = NULL;
goto out_cq;
}
ret = ib_req_notify_cq(device->dev_rx_cq[i], IB_CQ_NEXT_COMP);
if (ret)
goto out_cq;
ret = ib_req_notify_cq(device->dev_tx_cq[i], IB_CQ_NEXT_COMP);
ret = ib_req_notify_cq(comp->cq, IB_CQ_NEXT_COMP);
if (ret)
goto out_cq;
}
......@@ -310,19 +312,15 @@ isert_create_device_ib_res(struct isert_device *device)
return 0;
out_cq:
for (j = 0; j < i; j++) {
cq_desc = &device->cq_desc[j];
for (i = 0; i < device->comps_used; i++) {
struct isert_comp *comp = &device->comps[i];
if (device->dev_rx_cq[j]) {
cancel_work_sync(&cq_desc->cq_rx_work);
ib_destroy_cq(device->dev_rx_cq[j]);
}
if (device->dev_tx_cq[j]) {
cancel_work_sync(&cq_desc->cq_tx_work);
ib_destroy_cq(device->dev_tx_cq[j]);
if (comp->cq) {
cancel_work_sync(&comp->work);
ib_destroy_cq(comp->cq);
}
}
kfree(device->cq_desc);
kfree(device->comps);
return ret;
}
......@@ -330,21 +328,18 @@ isert_create_device_ib_res(struct isert_device *device)
static void
isert_free_device_ib_res(struct isert_device *device)
{
struct isert_cq_desc *cq_desc;
int i;
for (i = 0; i < device->cqs_used; i++) {
cq_desc = &device->cq_desc[i];
isert_info("device %p\n", device);
cancel_work_sync(&cq_desc->cq_rx_work);
cancel_work_sync(&cq_desc->cq_tx_work);
ib_destroy_cq(device->dev_rx_cq[i]);
ib_destroy_cq(device->dev_tx_cq[i]);
device->dev_rx_cq[i] = NULL;
device->dev_tx_cq[i] = NULL;
}
for (i = 0; i < device->comps_used; i++) {
struct isert_comp *comp = &device->comps[i];
kfree(device->cq_desc);
cancel_work_sync(&comp->work);
ib_destroy_cq(comp->cq);
comp->cq = NULL;
}
kfree(device->comps);
}
static void
......@@ -352,6 +347,7 @@ isert_device_try_release(struct isert_device *device)
{
mutex_lock(&device_list_mutex);
device->refcount--;
isert_info("device %p refcount %d\n", device, device->refcount);
if (!device->refcount) {
isert_free_device_ib_res(device);
list_del(&device->dev_node);
......@@ -370,6 +366,8 @@ isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id)
list_for_each_entry(device, &device_list, dev_node) {
if (device->ib_device->node_guid == cma_id->device->node_guid) {
device->refcount++;
isert_info("Found iser device %p refcount %d\n",
device, device->refcount);
mutex_unlock(&device_list_mutex);
return device;
}
......@@ -393,6 +391,8 @@ isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id)
device->refcount++;
list_add_tail(&device->dev_node, &device_list);
isert_info("Created a new iser device %p refcount %d\n",
device, device->refcount);
mutex_unlock(&device_list_mutex);
return device;
......@@ -407,7 +407,7 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn)
if (list_empty(&isert_conn->conn_fr_pool))
return;
pr_debug("Freeing conn %p fastreg pool", isert_conn);
isert_info("Freeing conn %p fastreg pool", isert_conn);
list_for_each_entry_safe(fr_desc, tmp,
&isert_conn->conn_fr_pool, list) {
......@@ -425,51 +425,29 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn)
}
if (i < isert_conn->conn_fr_pool_size)
pr_warn("Pool still has %d regions registered\n",
isert_warn("Pool still has %d regions registered\n",
isert_conn->conn_fr_pool_size - i);
}
static int
isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
struct fast_reg_descriptor *fr_desc, u8 protection)
isert_create_pi_ctx(struct fast_reg_descriptor *desc,
struct ib_device *device,
struct ib_pd *pd)
{
int ret;
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));
ret = PTR_ERR(fr_desc->data_mr);
goto err_data_frpl;
}
pr_debug("Create fr_desc %p page_list %p\n",
fr_desc, fr_desc->data_frpl->page_list);
fr_desc->ind |= ISERT_DATA_KEY_VALID;
if (protection) {
struct ib_mr_init_attr mr_init_attr = {0};
struct ib_mr_init_attr mr_init_attr;
struct pi_context *pi_ctx;
int ret;
fr_desc->pi_ctx = kzalloc(sizeof(*fr_desc->pi_ctx), GFP_KERNEL);
if (!fr_desc->pi_ctx) {
pr_err("Failed to allocate pi context\n");
ret = -ENOMEM;
goto err_data_mr;
pi_ctx = kzalloc(sizeof(*desc->pi_ctx), GFP_KERNEL);
if (!pi_ctx) {
isert_err("Failed to allocate pi context\n");
return -ENOMEM;
}
pi_ctx = fr_desc->pi_ctx;
pi_ctx->prot_frpl = ib_alloc_fast_reg_page_list(ib_device,
pi_ctx->prot_frpl = ib_alloc_fast_reg_page_list(device,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(pi_ctx->prot_frpl)) {
pr_err("Failed to allocate prot frpl err=%ld\n",
isert_err("Failed to allocate prot frpl err=%ld\n",
PTR_ERR(pi_ctx->prot_frpl));
ret = PTR_ERR(pi_ctx->prot_frpl);
goto err_pi_ctx;
......@@ -477,35 +455,67 @@ isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
pi_ctx->prot_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(pi_ctx->prot_mr)) {
pr_err("Failed to allocate prot frmr err=%ld\n",
isert_err("Failed to allocate prot frmr err=%ld\n",
PTR_ERR(pi_ctx->prot_mr));
ret = PTR_ERR(pi_ctx->prot_mr);
goto err_prot_frpl;
}
fr_desc->ind |= ISERT_PROT_KEY_VALID;
desc->ind |= ISERT_PROT_KEY_VALID;
memset(&mr_init_attr, 0, sizeof(mr_init_attr));
mr_init_attr.max_reg_descriptors = 2;
mr_init_attr.flags |= IB_MR_SIGNATURE_EN;
pi_ctx->sig_mr = ib_create_mr(pd, &mr_init_attr);
if (IS_ERR(pi_ctx->sig_mr)) {
pr_err("Failed to allocate signature enabled mr err=%ld\n",
isert_err("Failed to allocate signature enabled mr err=%ld\n",
PTR_ERR(pi_ctx->sig_mr));
ret = PTR_ERR(pi_ctx->sig_mr);
goto err_prot_mr;
}
fr_desc->ind |= ISERT_SIG_KEY_VALID;
}
fr_desc->ind &= ~ISERT_PROTECTED;
desc->pi_ctx = pi_ctx;
desc->ind |= ISERT_SIG_KEY_VALID;
desc->ind &= ~ISERT_PROTECTED;
return 0;
err_prot_mr:
ib_dereg_mr(fr_desc->pi_ctx->prot_mr);
ib_dereg_mr(desc->pi_ctx->prot_mr);
err_prot_frpl:
ib_free_fast_reg_page_list(fr_desc->pi_ctx->prot_frpl);
ib_free_fast_reg_page_list(desc->pi_ctx->prot_frpl);
err_pi_ctx:
kfree(fr_desc->pi_ctx);
err_data_mr:
ib_dereg_mr(fr_desc->data_mr);
kfree(desc->pi_ctx);
return ret;
}
static int
isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
struct fast_reg_descriptor *fr_desc)
{
int ret;
fr_desc->data_frpl = ib_alloc_fast_reg_page_list(ib_device,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_frpl)) {
isert_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)) {
isert_err("Failed to allocate data frmr err=%ld\n",
PTR_ERR(fr_desc->data_mr));
ret = PTR_ERR(fr_desc->data_mr);
goto err_data_frpl;
}
fr_desc->ind |= ISERT_DATA_KEY_VALID;
isert_dbg("Created fr_desc %p\n", fr_desc);
return 0;
err_data_frpl:
ib_free_fast_reg_page_list(fr_desc->data_frpl);
......@@ -513,7 +523,7 @@ isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
}
static int
isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support)
isert_conn_create_fastreg_pool(struct isert_conn *isert_conn)
{
struct fast_reg_descriptor *fr_desc;
struct isert_device *device = isert_conn->conn_device;
......@@ -531,16 +541,15 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support)
for (i = 0; i < tag_num; i++) {
fr_desc = kzalloc(sizeof(*fr_desc), GFP_KERNEL);
if (!fr_desc) {
pr_err("Failed to allocate fast_reg descriptor\n");
isert_err("Failed to allocate fast_reg descriptor\n");
ret = -ENOMEM;
goto err;
}
ret = isert_create_fr_desc(device->ib_device,
isert_conn->conn_pd, fr_desc,
pi_support);
isert_conn->conn_pd, fr_desc);
if (ret) {
pr_err("Failed to create fastreg descriptor err=%d\n",
isert_err("Failed to create fastreg descriptor err=%d\n",
ret);
kfree(fr_desc);
goto err;
......@@ -550,7 +559,7 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support)
isert_conn->conn_fr_pool_size++;
}
pr_debug("Creating conn %p fastreg pool size=%d",
isert_dbg("Creating conn %p fastreg pool size=%d",
isert_conn, isert_conn->conn_fr_pool_size);
return 0;
......@@ -563,47 +572,45 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support)
static int
isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
{
struct iscsi_np *np = cma_id->context;
struct isert_np *isert_np = np->np_context;
struct isert_np *isert_np = cma_id->context;
struct iscsi_np *np = isert_np->np;
struct isert_conn *isert_conn;
struct isert_device *device;
struct ib_device *ib_dev = cma_id->device;
int ret = 0;
u8 pi_support;
spin_lock_bh(&np->np_thread_lock);
if (!np->enabled) {
spin_unlock_bh(&np->np_thread_lock);
pr_debug("iscsi_np is not enabled, reject connect request\n");
isert_dbg("iscsi_np is not enabled, reject connect request\n");
return rdma_reject(cma_id, NULL, 0);
}
spin_unlock_bh(&np->np_thread_lock);
pr_debug("Entering isert_connect_request cma_id: %p, context: %p\n",
isert_dbg("cma_id: %p, portal: %p\n",
cma_id, cma_id->context);
isert_conn = kzalloc(sizeof(struct isert_conn), GFP_KERNEL);
if (!isert_conn) {
pr_err("Unable to allocate isert_conn\n");
isert_err("Unable to allocate isert_conn\n");
return -ENOMEM;
}
isert_conn->state = ISER_CONN_INIT;
INIT_LIST_HEAD(&isert_conn->conn_accept_node);
init_completion(&isert_conn->conn_login_comp);
init_completion(&isert_conn->login_req_comp);
init_completion(&isert_conn->conn_wait);
init_completion(&isert_conn->conn_wait_comp_err);
kref_init(&isert_conn->conn_kref);
mutex_init(&isert_conn->conn_mutex);
spin_lock_init(&isert_conn->conn_lock);
INIT_LIST_HEAD(&isert_conn->conn_fr_pool);
cma_id->context = isert_conn;
isert_conn->conn_cm_id = cma_id;
isert_conn->login_buf = kzalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
ISER_RX_LOGIN_SIZE, GFP_KERNEL);
if (!isert_conn->login_buf) {
pr_err("Unable to allocate isert_conn->login_buf\n");
isert_err("Unable to allocate isert_conn->login_buf\n");
ret = -ENOMEM;
goto out;
}
......@@ -611,7 +618,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
isert_conn->login_req_buf = isert_conn->login_buf;
isert_conn->login_rsp_buf = isert_conn->login_buf +
ISCSI_DEF_MAX_RECV_SEG_LEN;
pr_debug("Set login_buf: %p login_req_buf: %p login_rsp_buf: %p\n",
isert_dbg("Set login_buf: %p login_req_buf: %p login_rsp_buf: %p\n",
isert_conn->login_buf, isert_conn->login_req_buf,
isert_conn->login_rsp_buf);
......@@ -621,7 +628,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
ret = ib_dma_mapping_error(ib_dev, isert_conn->login_req_dma);
if (ret) {
pr_err("ib_dma_mapping_error failed for login_req_dma: %d\n",
isert_err("ib_dma_mapping_error failed for login_req_dma: %d\n",
ret);
isert_conn->login_req_dma = 0;
goto out_login_buf;
......@@ -633,7 +640,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
ret = ib_dma_mapping_error(ib_dev, isert_conn->login_rsp_dma);
if (ret) {
pr_err("ib_dma_mapping_error failed for login_rsp_dma: %d\n",
isert_err("ib_dma_mapping_error failed for login_rsp_dma: %d\n",
ret);
isert_conn->login_rsp_dma = 0;
goto out_req_dma_map;
......@@ -649,13 +656,13 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
isert_conn->initiator_depth = min_t(u8,
event->param.conn.initiator_depth,
device->dev_attr.max_qp_init_rd_atom);
pr_debug("Using initiator_depth: %u\n", isert_conn->initiator_depth);
isert_dbg("Using initiator_depth: %u\n", isert_conn->initiator_depth);
isert_conn->conn_device = device;
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_err("ib_alloc_pd failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_pd;
}
......@@ -664,20 +671,20 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
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_err("ib_get_dma_mr failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_mr;
}
pi_support = np->tpg_np->tpg->tpg_attrib.t10_pi;
if (pi_support && !device->pi_capable) {
pr_err("Protection information requested but not supported, "
"rejecting connect request\n");
ret = rdma_reject(cma_id, NULL, 0);
goto out_mr;
}
ret = isert_conn_setup_qp(isert_conn, cma_id);
if (ret)
goto out_conn_dev;
ret = isert_conn_setup_qp(isert_conn, cma_id, pi_support);
ret = isert_rdma_post_recvl(isert_conn);
if (ret)
goto out_conn_dev;
ret = isert_rdma_accept(isert_conn);
if (ret)
goto out_conn_dev;
......@@ -685,7 +692,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
list_add_tail(&isert_conn->conn_accept_node, &isert_np->np_accept_list);
mutex_unlock(&isert_np->np_accept_mutex);
pr_debug("isert_connect_request() up np_sem np: %p\n", np);
isert_info("np %p: Allow accept_np to continue\n", np);
up(&isert_np->np_sem);
return 0;
......@@ -705,6 +712,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
kfree(isert_conn->login_buf);
out:
kfree(isert_conn);
rdma_reject(cma_id, NULL, 0);
return ret;
}
......@@ -713,24 +721,25 @@ isert_connect_release(struct isert_conn *isert_conn)
{
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct isert_device *device = isert_conn->conn_device;
int cq_index;
pr_debug("Entering isert_connect_release(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p\n", isert_conn);
if (device && device->use_fastreg)
isert_conn_free_fastreg_pool(isert_conn);
isert_free_rx_descriptors(isert_conn);
rdma_destroy_id(isert_conn->conn_cm_id);
if (isert_conn->conn_qp) {
cq_index = ((struct isert_cq_desc *)
isert_conn->conn_qp->recv_cq->cq_context)->cq_index;
pr_debug("isert_connect_release: cq_index: %d\n", cq_index);
isert_conn->conn_device->cq_active_qps[cq_index]--;
struct isert_comp *comp = isert_conn->conn_qp->recv_cq->cq_context;
rdma_destroy_qp(isert_conn->conn_cm_id);
}
isert_dbg("dec completion context %p active_qps\n", comp);
mutex_lock(&device_list_mutex);
comp->active_qps--;
mutex_unlock(&device_list_mutex);
isert_free_rx_descriptors(isert_conn);
rdma_destroy_id(isert_conn->conn_cm_id);
ib_destroy_qp(isert_conn->conn_qp);
}
ib_dereg_mr(isert_conn->conn_mr);
ib_dealloc_pd(isert_conn->conn_pd);
......@@ -747,16 +756,24 @@ isert_connect_release(struct isert_conn *isert_conn)
if (device)
isert_device_try_release(device);
pr_debug("Leaving isert_connect_release >>>>>>>>>>>>\n");
}
static void
isert_connected_handler(struct rdma_cm_id *cma_id)
{
struct isert_conn *isert_conn = cma_id->context;
struct isert_conn *isert_conn = cma_id->qp->qp_context;
kref_get(&isert_conn->conn_kref);
isert_info("conn %p\n", isert_conn);
if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
isert_warn("conn %p connect_release is running\n", isert_conn);
return;
}
mutex_lock(&isert_conn->conn_mutex);
if (isert_conn->state != ISER_CONN_FULL_FEATURE)
isert_conn->state = ISER_CONN_UP;
mutex_unlock(&isert_conn->conn_mutex);
}
static void
......@@ -765,8 +782,8 @@ isert_release_conn_kref(struct kref *kref)
struct isert_conn *isert_conn = container_of(kref,
struct isert_conn, conn_kref);
pr_debug("Calling isert_connect_release for final kref %s/%d\n",
current->comm, current->pid);
isert_info("conn %p final kref %s/%d\n", isert_conn, current->comm,
current->pid);
isert_connect_release(isert_conn);
}
......@@ -777,75 +794,111 @@ isert_put_conn(struct isert_conn *isert_conn)
kref_put(&isert_conn->conn_kref, isert_release_conn_kref);
}
/**
* isert_conn_terminate() - Initiate connection termination
* @isert_conn: isert connection struct
*
* Notes:
* In case the connection state is FULL_FEATURE, move state
* to TEMINATING and start teardown sequence (rdma_disconnect).
* In case the connection state is UP, complete flush as well.
*
* This routine must be called with conn_mutex held. Thus it is
* safe to call multiple times.
*/
static void
isert_disconnect_work(struct work_struct *work)
isert_conn_terminate(struct isert_conn *isert_conn)
{
struct isert_conn *isert_conn = container_of(work,
struct isert_conn, conn_logout_work);
int err;
pr_debug("isert_disconnect_work(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
mutex_lock(&isert_conn->conn_mutex);
if (isert_conn->state == ISER_CONN_UP)
switch (isert_conn->state) {
case ISER_CONN_TERMINATING:
break;
case ISER_CONN_UP:
case ISER_CONN_FULL_FEATURE: /* FALLTHRU */
isert_info("Terminating conn %p state %d\n",
isert_conn, isert_conn->state);
isert_conn->state = ISER_CONN_TERMINATING;
if (isert_conn->post_recv_buf_count == 0 &&
atomic_read(&isert_conn->post_send_buf_count) == 0) {
mutex_unlock(&isert_conn->conn_mutex);
goto wake_up;
}
if (!isert_conn->conn_cm_id) {
mutex_unlock(&isert_conn->conn_mutex);
isert_put_conn(isert_conn);
return;
err = rdma_disconnect(isert_conn->conn_cm_id);
if (err)
isert_warn("Failed rdma_disconnect isert_conn %p\n",
isert_conn);
break;
default:
isert_warn("conn %p teminating in state %d\n",
isert_conn, isert_conn->state);
}
}
if (isert_conn->disconnect) {
/* Send DREQ/DREP towards our initiator */
rdma_disconnect(isert_conn->conn_cm_id);
}
static int
isert_np_cma_handler(struct isert_np *isert_np,
enum rdma_cm_event_type event)
{
isert_dbg("isert np %p, handling event %d\n", isert_np, event);
mutex_unlock(&isert_conn->conn_mutex);
switch (event) {
case RDMA_CM_EVENT_DEVICE_REMOVAL:
isert_np->np_cm_id = NULL;
break;
case RDMA_CM_EVENT_ADDR_CHANGE:
isert_np->np_cm_id = isert_setup_id(isert_np);
if (IS_ERR(isert_np->np_cm_id)) {
isert_err("isert np %p setup id failed: %ld\n",
isert_np, PTR_ERR(isert_np->np_cm_id));
isert_np->np_cm_id = NULL;
}
break;
default:
isert_err("isert np %p Unexpected event %d\n",
isert_np, event);
}
wake_up:
complete(&isert_conn->conn_wait);
return -1;
}
static int
isert_disconnected_handler(struct rdma_cm_id *cma_id, bool disconnect)
isert_disconnected_handler(struct rdma_cm_id *cma_id,
enum rdma_cm_event_type event)
{
struct isert_np *isert_np = cma_id->context;
struct isert_conn *isert_conn;
if (!cma_id->qp) {
struct isert_np *isert_np = cma_id->context;
if (isert_np->np_cm_id == cma_id)
return isert_np_cma_handler(cma_id->context, event);
isert_np->np_cm_id = NULL;
return -1;
}
isert_conn = cma_id->qp->qp_context;
isert_conn = (struct isert_conn *)cma_id->context;
mutex_lock(&isert_conn->conn_mutex);
isert_conn_terminate(isert_conn);
mutex_unlock(&isert_conn->conn_mutex);
isert_conn->disconnect = disconnect;
INIT_WORK(&isert_conn->conn_logout_work, isert_disconnect_work);
schedule_work(&isert_conn->conn_logout_work);
isert_info("conn %p completing conn_wait\n", isert_conn);
complete(&isert_conn->conn_wait);
return 0;
}
static void
isert_connect_error(struct rdma_cm_id *cma_id)
{
struct isert_conn *isert_conn = cma_id->qp->qp_context;
isert_put_conn(isert_conn);
}
static int
isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
{
int ret = 0;
bool disconnect = false;
pr_debug("isert_cma_handler: event %d status %d conn %p id %p\n",
event->event, event->status, cma_id->context, cma_id);
isert_info("event %d status %d id %p np %p\n", event->event,
event->status, cma_id, cma_id->context);
switch (event->event) {
case RDMA_CM_EVENT_CONNECT_REQUEST:
ret = isert_connect_request(cma_id, event);
if (ret)
pr_err("isert_cma_handler failed RDMA_CM_EVENT: 0x%08x %d\n",
event->event, ret);
isert_err("failed handle connect request %d\n", ret);
break;
case RDMA_CM_EVENT_ESTABLISHED:
isert_connected_handler(cma_id);
......@@ -853,13 +906,16 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
case RDMA_CM_EVENT_ADDR_CHANGE: /* FALLTHRU */
case RDMA_CM_EVENT_DISCONNECTED: /* FALLTHRU */
case RDMA_CM_EVENT_DEVICE_REMOVAL: /* FALLTHRU */
disconnect = true;
case RDMA_CM_EVENT_TIMEWAIT_EXIT: /* FALLTHRU */
ret = isert_disconnected_handler(cma_id, disconnect);
ret = isert_disconnected_handler(cma_id, event->event);
break;
case RDMA_CM_EVENT_REJECTED: /* FALLTHRU */
case RDMA_CM_EVENT_UNREACHABLE: /* FALLTHRU */
case RDMA_CM_EVENT_CONNECT_ERROR:
isert_connect_error(cma_id);
break;
default:
pr_err("Unhandled RDMA CMA event: %d\n", event->event);
isert_err("Unhandled RDMA CMA event: %d\n", event->event);
break;
}
......@@ -876,7 +932,7 @@ isert_post_recv(struct isert_conn *isert_conn, u32 count)
for (rx_wr = isert_conn->conn_rx_wr, i = 0; i < count; i++, rx_wr++) {
rx_desc = &isert_conn->conn_rx_descs[rx_head];
rx_wr->wr_id = (unsigned long)rx_desc;
rx_wr->wr_id = (uintptr_t)rx_desc;
rx_wr->sg_list = &rx_desc->rx_sg;
rx_wr->num_sge = 1;
rx_wr->next = rx_wr + 1;
......@@ -890,10 +946,10 @@ isert_post_recv(struct isert_conn *isert_conn, u32 count)
ret = ib_post_recv(isert_conn->conn_qp, isert_conn->conn_rx_wr,
&rx_wr_failed);
if (ret) {
pr_err("ib_post_recv() failed with ret: %d\n", ret);
isert_err("ib_post_recv() failed with ret: %d\n", ret);
isert_conn->post_recv_buf_count -= count;
} else {
pr_debug("isert_post_recv(): Posted %d RX buffers\n", count);
isert_dbg("isert_post_recv(): Posted %d RX buffers\n", count);
isert_conn->conn_rx_desc_head = rx_head;
}
return ret;
......@@ -910,19 +966,15 @@ isert_post_send(struct isert_conn *isert_conn, struct iser_tx_desc *tx_desc)
ISER_HEADERS_LEN, DMA_TO_DEVICE);
send_wr.next = NULL;
send_wr.wr_id = (unsigned long)tx_desc;
send_wr.wr_id = (uintptr_t)tx_desc;
send_wr.sg_list = tx_desc->tx_sg;
send_wr.num_sge = tx_desc->num_sge;
send_wr.opcode = IB_WR_SEND;
send_wr.send_flags = IB_SEND_SIGNALED;
atomic_inc(&isert_conn->post_send_buf_count);
ret = ib_post_send(isert_conn->conn_qp, &send_wr, &send_wr_failed);
if (ret) {
pr_err("ib_post_send() failed, ret: %d\n", ret);
atomic_dec(&isert_conn->post_send_buf_count);
}
if (ret)
isert_err("ib_post_send() failed, ret: %d\n", ret);
return ret;
}
......@@ -945,7 +997,7 @@ isert_create_send_desc(struct isert_conn *isert_conn,
if (tx_desc->tx_sg[0].lkey != isert_conn->conn_mr->lkey) {
tx_desc->tx_sg[0].lkey = isert_conn->conn_mr->lkey;
pr_debug("tx_desc %p lkey mismatch, fixing\n", tx_desc);
isert_dbg("tx_desc %p lkey mismatch, fixing\n", tx_desc);
}
}
......@@ -959,7 +1011,7 @@ isert_init_tx_hdrs(struct isert_conn *isert_conn,
dma_addr = ib_dma_map_single(ib_dev, (void *)tx_desc,
ISER_HEADERS_LEN, DMA_TO_DEVICE);
if (ib_dma_mapping_error(ib_dev, dma_addr)) {
pr_err("ib_dma_mapping_error() failed\n");
isert_err("ib_dma_mapping_error() failed\n");
return -ENOMEM;
}
......@@ -968,40 +1020,24 @@ isert_init_tx_hdrs(struct isert_conn *isert_conn,
tx_desc->tx_sg[0].length = ISER_HEADERS_LEN;
tx_desc->tx_sg[0].lkey = isert_conn->conn_mr->lkey;
pr_debug("isert_init_tx_hdrs: Setup tx_sg[0].addr: 0x%llx length: %u"
" lkey: 0x%08x\n", tx_desc->tx_sg[0].addr,
tx_desc->tx_sg[0].length, tx_desc->tx_sg[0].lkey);
isert_dbg("Setup tx_sg[0].addr: 0x%llx length: %u lkey: 0x%x\n",
tx_desc->tx_sg[0].addr, tx_desc->tx_sg[0].length,
tx_desc->tx_sg[0].lkey);
return 0;
}
static void
isert_init_send_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd,
struct ib_send_wr *send_wr, bool coalesce)
struct ib_send_wr *send_wr)
{
struct iser_tx_desc *tx_desc = &isert_cmd->tx_desc;
isert_cmd->rdma_wr.iser_ib_op = ISER_IB_SEND;
send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc;
send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc;
send_wr->opcode = IB_WR_SEND;
send_wr->sg_list = &tx_desc->tx_sg[0];
send_wr->num_sge = isert_cmd->tx_desc.num_sge;
/*
* Coalesce send completion interrupts by only setting IB_SEND_SIGNALED
* bit for every ISERT_COMP_BATCH_COUNT number of ib_post_send() calls.
*/
mutex_lock(&isert_conn->conn_mutex);
if (coalesce && isert_conn->state == ISER_CONN_UP &&
++isert_conn->conn_comp_batch < ISERT_COMP_BATCH_COUNT) {
tx_desc->llnode_active = true;
llist_add(&tx_desc->comp_llnode, &isert_conn->conn_comp_llist);
mutex_unlock(&isert_conn->conn_mutex);
return;
}
isert_conn->conn_comp_batch = 0;
tx_desc->comp_llnode_batch = llist_del_all(&isert_conn->conn_comp_llist);
mutex_unlock(&isert_conn->conn_mutex);
send_wr->send_flags = IB_SEND_SIGNALED;
}
......@@ -1017,22 +1053,21 @@ isert_rdma_post_recvl(struct isert_conn *isert_conn)
sge.length = ISER_RX_LOGIN_SIZE;
sge.lkey = isert_conn->conn_mr->lkey;
pr_debug("Setup sge: addr: %llx length: %d 0x%08x\n",
isert_dbg("Setup sge: addr: %llx length: %d 0x%08x\n",
sge.addr, sge.length, sge.lkey);
memset(&rx_wr, 0, sizeof(struct ib_recv_wr));
rx_wr.wr_id = (unsigned long)isert_conn->login_req_buf;
rx_wr.wr_id = (uintptr_t)isert_conn->login_req_buf;
rx_wr.sg_list = &sge;
rx_wr.num_sge = 1;
isert_conn->post_recv_buf_count++;
ret = ib_post_recv(isert_conn->conn_qp, &rx_wr, &rx_wr_fail);
if (ret) {
pr_err("ib_post_recv() failed: %d\n", ret);
isert_err("ib_post_recv() failed: %d\n", ret);
isert_conn->post_recv_buf_count--;
}
pr_debug("ib_post_recv(): returned success >>>>>>>>>>>>>>>>>>>>>>>>\n");
return ret;
}
......@@ -1072,13 +1107,9 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login,
if (login->login_complete) {
if (!conn->sess->sess_ops->SessionType &&
isert_conn->conn_device->use_fastreg) {
/* Normal Session and fastreg is used */
u8 pi_support = login->np->tpg_np->tpg->tpg_attrib.t10_pi;
ret = isert_conn_create_fastreg_pool(isert_conn,
pi_support);
ret = isert_conn_create_fastreg_pool(isert_conn);
if (ret) {
pr_err("Conn: %p failed to create"
isert_err("Conn: %p failed to create"
" fastreg pool\n", isert_conn);
return ret;
}
......@@ -1092,7 +1123,10 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login,
if (ret)
return ret;
isert_conn->state = ISER_CONN_UP;
/* Now we are in FULL_FEATURE phase */
mutex_lock(&isert_conn->conn_mutex);
isert_conn->state = ISER_CONN_FULL_FEATURE;
mutex_unlock(&isert_conn->conn_mutex);
goto post_send;
}
......@@ -1109,18 +1143,17 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login,
}
static void
isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen,
struct isert_conn *isert_conn)
isert_rx_login_req(struct isert_conn *isert_conn)
{
struct iser_rx_desc *rx_desc = (void *)isert_conn->login_req_buf;
int rx_buflen = isert_conn->login_req_len;
struct iscsi_conn *conn = isert_conn->conn;
struct iscsi_login *login = conn->conn_login;
int size;
if (!login) {
pr_err("conn->conn_login is NULL\n");
dump_stack();
return;
}
isert_info("conn %p\n", isert_conn);
WARN_ON_ONCE(!login);
if (login->first_request) {
struct iscsi_login_req *login_req =
......@@ -1146,8 +1179,9 @@ isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen,
memcpy(&login->req[0], (void *)&rx_desc->iscsi_header, ISCSI_HDR_LEN);
size = min(rx_buflen, MAX_KEY_VALUE_PAIRS);
pr_debug("Using login payload size: %d, rx_buflen: %d MAX_KEY_VALUE_PAIRS: %d\n",
size, rx_buflen, MAX_KEY_VALUE_PAIRS);
isert_dbg("Using login payload size: %d, rx_buflen: %d "
"MAX_KEY_VALUE_PAIRS: %d\n", size, rx_buflen,
MAX_KEY_VALUE_PAIRS);
memcpy(login->req_buf, &rx_desc->data[0], size);
if (login->first_request) {
......@@ -1166,7 +1200,7 @@ static struct iscsi_cmd
cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
if (!cmd) {
pr_err("Unable to allocate iscsi_cmd + isert_cmd\n");
isert_err("Unable to allocate iscsi_cmd + isert_cmd\n");
return NULL;
}
isert_cmd = iscsit_priv_cmd(cmd);
......@@ -1209,7 +1243,7 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
sg = &cmd->se_cmd.t_data_sg[0];
sg_nents = max(1UL, DIV_ROUND_UP(imm_data_len, PAGE_SIZE));
pr_debug("Copying Immediate SG: %p sg_nents: %u from %p imm_data_len: %d\n",
isert_dbg("Copying Immediate SG: %p sg_nents: %u from %p imm_data_len: %d\n",
sg, sg_nents, &rx_desc->data[0], imm_data_len);
sg_copy_from_buffer(sg, sg_nents, &rx_desc->data[0], imm_data_len);
......@@ -1254,13 +1288,15 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn,
* FIXME: Unexpected unsolicited_data out
*/
if (!cmd->unsolicited_data) {
pr_err("Received unexpected solicited data payload\n");
isert_err("Received unexpected solicited data payload\n");
dump_stack();
return -1;
}
pr_debug("Unsolicited DataOut unsol_data_len: %u, write_data_done: %u, data_length: %u\n",
unsol_data_len, cmd->write_data_done, cmd->se_cmd.data_length);
isert_dbg("Unsolicited DataOut unsol_data_len: %u, "
"write_data_done: %u, data_length: %u\n",
unsol_data_len, cmd->write_data_done,
cmd->se_cmd.data_length);
sg_off = cmd->write_data_done / PAGE_SIZE;
sg_start = &cmd->se_cmd.t_data_sg[sg_off];
......@@ -1270,12 +1306,13 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn,
* FIXME: Non page-aligned unsolicited_data out
*/
if (page_off) {
pr_err("Received unexpected non-page aligned data payload\n");
isert_err("unexpected non-page aligned data payload\n");
dump_stack();
return -1;
}
pr_debug("Copying DataOut: sg_start: %p, sg_off: %u sg_nents: %u from %p %u\n",
sg_start, sg_off, sg_nents, &rx_desc->data[0], unsol_data_len);
isert_dbg("Copying DataOut: sg_start: %p, sg_off: %u "
"sg_nents: %u from %p %u\n", sg_start, sg_off,
sg_nents, &rx_desc->data[0], unsol_data_len);
sg_copy_from_buffer(sg_start, sg_nents, &rx_desc->data[0],
unsol_data_len);
......@@ -1322,7 +1359,7 @@ isert_handle_text_cmd(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd
text_in = kzalloc(payload_length, GFP_KERNEL);
if (!text_in) {
pr_err("Unable to allocate text_in of payload_length: %u\n",
isert_err("Unable to allocate text_in of payload_length: %u\n",
payload_length);
return -ENOMEM;
}
......@@ -1348,7 +1385,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
if (sess->sess_ops->SessionType &&
(!(opcode & ISCSI_OP_TEXT) || !(opcode & ISCSI_OP_LOGOUT))) {
pr_err("Got illegal opcode: 0x%02x in SessionType=Discovery,"
isert_err("Got illegal opcode: 0x%02x in SessionType=Discovery,"
" ignoring\n", opcode);
return 0;
}
......@@ -1395,10 +1432,6 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
break;
ret = iscsit_handle_logout_cmd(conn, cmd, (unsigned char *)hdr);
if (ret > 0)
wait_for_completion_timeout(&conn->conn_logout_comp,
SECONDS_FOR_LOGOUT_COMP *
HZ);
break;
case ISCSI_OP_TEXT:
cmd = isert_allocate_cmd(conn);
......@@ -1410,7 +1443,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
rx_desc, (struct iscsi_text *)hdr);
break;
default:
pr_err("Got unknown iSCSI OpCode: 0x%02x\n", opcode);
isert_err("Got unknown iSCSI OpCode: 0x%02x\n", opcode);
dump_stack();
break;
}
......@@ -1431,23 +1464,23 @@ isert_rx_do_work(struct iser_rx_desc *rx_desc, struct isert_conn *isert_conn)
if (iser_hdr->flags & ISER_RSV) {
read_stag = be32_to_cpu(iser_hdr->read_stag);
read_va = be64_to_cpu(iser_hdr->read_va);
pr_debug("ISER_RSV: read_stag: 0x%08x read_va: 0x%16llx\n",
isert_dbg("ISER_RSV: read_stag: 0x%x read_va: 0x%llx\n",
read_stag, (unsigned long long)read_va);
}
if (iser_hdr->flags & ISER_WSV) {
write_stag = be32_to_cpu(iser_hdr->write_stag);
write_va = be64_to_cpu(iser_hdr->write_va);
pr_debug("ISER_WSV: write__stag: 0x%08x write_va: 0x%16llx\n",
isert_dbg("ISER_WSV: write_stag: 0x%x write_va: 0x%llx\n",
write_stag, (unsigned long long)write_va);
}
pr_debug("ISER ISCSI_CTRL PDU\n");
isert_dbg("ISER ISCSI_CTRL PDU\n");
break;
case ISER_HELLO:
pr_err("iSER Hello message\n");
isert_err("iSER Hello message\n");
break;
default:
pr_warn("Unknown iSER hdr flags: 0x%02x\n", iser_hdr->flags);
isert_warn("Unknown iSER hdr flags: 0x%02x\n", iser_hdr->flags);
break;
}
......@@ -1457,7 +1490,7 @@ isert_rx_do_work(struct iser_rx_desc *rx_desc, struct isert_conn *isert_conn)
static void
isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn,
unsigned long xfer_len)
u32 xfer_len)
{
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct iscsi_hdr *hdr;
......@@ -1467,33 +1500,42 @@ isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn,
if ((char *)desc == isert_conn->login_req_buf) {
rx_dma = isert_conn->login_req_dma;
rx_buflen = ISER_RX_LOGIN_SIZE;
pr_debug("ISER login_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n",
isert_dbg("login_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n",
rx_dma, rx_buflen);
} else {
rx_dma = desc->dma_addr;
rx_buflen = ISER_RX_PAYLOAD_SIZE;
pr_debug("ISER req_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n",
isert_dbg("req_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n",
rx_dma, rx_buflen);
}
ib_dma_sync_single_for_cpu(ib_dev, rx_dma, rx_buflen, DMA_FROM_DEVICE);
hdr = &desc->iscsi_header;
pr_debug("iSCSI opcode: 0x%02x, ITT: 0x%08x, flags: 0x%02x dlen: %d\n",
isert_dbg("iSCSI opcode: 0x%02x, ITT: 0x%08x, flags: 0x%02x dlen: %d\n",
hdr->opcode, hdr->itt, hdr->flags,
(int)(xfer_len - ISER_HEADERS_LEN));
if ((char *)desc == isert_conn->login_req_buf)
isert_rx_login_req(desc, xfer_len - ISER_HEADERS_LEN,
isert_conn);
else
if ((char *)desc == isert_conn->login_req_buf) {
isert_conn->login_req_len = xfer_len - ISER_HEADERS_LEN;
if (isert_conn->conn) {
struct iscsi_login *login = isert_conn->conn->conn_login;
if (login && !login->first_request)
isert_rx_login_req(isert_conn);
}
mutex_lock(&isert_conn->conn_mutex);
complete(&isert_conn->login_req_comp);
mutex_unlock(&isert_conn->conn_mutex);
} else {
isert_rx_do_work(desc, isert_conn);
}
ib_dma_sync_single_for_device(ib_dev, rx_dma, rx_buflen,
DMA_FROM_DEVICE);
isert_conn->post_recv_buf_count--;
pr_debug("iSERT: Decremented post_recv_buf_count: %d\n",
isert_dbg("Decremented post_recv_buf_count: %d\n",
isert_conn->post_recv_buf_count);
if ((char *)desc == isert_conn->login_req_buf)
......@@ -1505,7 +1547,7 @@ isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn,
ISERT_MIN_POSTED_RX);
err = isert_post_recv(isert_conn, count);
if (err) {
pr_err("isert_post_recv() count: %d failed, %d\n",
isert_err("isert_post_recv() count: %d failed, %d\n",
count, err);
}
}
......@@ -1534,11 +1576,11 @@ isert_map_data_buf(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd,
data->dma_nents = ib_dma_map_sg(ib_dev, data->sg, data->nents,
data->dma_dir);
if (unlikely(!data->dma_nents)) {
pr_err("Cmd: unable to dma map SGs %p\n", sg);
isert_err("Cmd: unable to dma map SGs %p\n", sg);
return -EINVAL;
}
pr_debug("Mapped cmd: %p count: %u sg: %p sg_nents: %u rdma_len %d\n",
isert_dbg("Mapped cmd: %p count: %u sg: %p sg_nents: %u rdma_len %d\n",
isert_cmd, data->dma_nents, data->sg, data->nents, data->len);
return 0;
......@@ -1560,21 +1602,21 @@ isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
{
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
pr_debug("isert_unmap_cmd: %p\n", isert_cmd);
isert_dbg("Cmd %p\n", isert_cmd);
if (wr->data.sg) {
pr_debug("isert_unmap_cmd: %p unmap_sg op\n", isert_cmd);
isert_dbg("Cmd %p unmap_sg op\n", isert_cmd);
isert_unmap_data_buf(isert_conn, &wr->data);
}
if (wr->send_wr) {
pr_debug("isert_unmap_cmd: %p free send_wr\n", isert_cmd);
isert_dbg("Cmd %p free send_wr\n", isert_cmd);
kfree(wr->send_wr);
wr->send_wr = NULL;
}
if (wr->ib_sge) {
pr_debug("isert_unmap_cmd: %p free ib_sge\n", isert_cmd);
isert_dbg("Cmd %p free ib_sge\n", isert_cmd);
kfree(wr->ib_sge);
wr->ib_sge = NULL;
}
......@@ -1586,11 +1628,10 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
LIST_HEAD(unmap_list);
pr_debug("unreg_fastreg_cmd: %p\n", isert_cmd);
isert_dbg("Cmd %p\n", isert_cmd);
if (wr->fr_desc) {
pr_debug("unreg_fastreg_cmd: %p free fr_desc %p\n",
isert_cmd, wr->fr_desc);
isert_dbg("Cmd %p free fr_desc %p\n", isert_cmd, wr->fr_desc);
if (wr->fr_desc->ind & ISERT_PROTECTED) {
isert_unmap_data_buf(isert_conn, &wr->prot);
wr->fr_desc->ind &= ~ISERT_PROTECTED;
......@@ -1602,7 +1643,7 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn)
}
if (wr->data.sg) {
pr_debug("unreg_fastreg_cmd: %p unmap_sg op\n", isert_cmd);
isert_dbg("Cmd %p unmap_sg op\n", isert_cmd);
isert_unmap_data_buf(isert_conn, &wr->data);
}
......@@ -1618,7 +1659,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err)
struct iscsi_conn *conn = isert_conn->conn;
struct isert_device *device = isert_conn->conn_device;
pr_debug("Entering isert_put_cmd: %p\n", isert_cmd);
isert_dbg("Cmd %p\n", isert_cmd);
switch (cmd->iscsi_opcode) {
case ISCSI_OP_SCSI_CMD:
......@@ -1668,7 +1709,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err)
* associated cmd->se_cmd needs to be released.
*/
if (cmd->se_cmd.se_tfo != NULL) {
pr_debug("Calling transport_generic_free_cmd from"
isert_dbg("Calling transport_generic_free_cmd from"
" isert_put_cmd for 0x%02x\n",
cmd->iscsi_opcode);
transport_generic_free_cmd(&cmd->se_cmd, 0);
......@@ -1687,7 +1728,7 @@ static void
isert_unmap_tx_desc(struct iser_tx_desc *tx_desc, struct ib_device *ib_dev)
{
if (tx_desc->dma_addr != 0) {
pr_debug("Calling ib_dma_unmap_single for tx_desc->dma_addr\n");
isert_dbg("unmap single for tx_desc->dma_addr\n");
ib_dma_unmap_single(ib_dev, tx_desc->dma_addr,
ISER_HEADERS_LEN, DMA_TO_DEVICE);
tx_desc->dma_addr = 0;
......@@ -1699,7 +1740,7 @@ isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd,
struct ib_device *ib_dev, bool comp_err)
{
if (isert_cmd->pdu_buf_dma != 0) {
pr_debug("Calling ib_dma_unmap_single for isert_cmd->pdu_buf_dma\n");
isert_dbg("unmap single for isert_cmd->pdu_buf_dma\n");
ib_dma_unmap_single(ib_dev, isert_cmd->pdu_buf_dma,
isert_cmd->pdu_buf_len, DMA_TO_DEVICE);
isert_cmd->pdu_buf_dma = 0;
......@@ -1717,7 +1758,7 @@ isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr)
ret = ib_check_mr_status(sig_mr, IB_MR_CHECK_SIG_STATUS, &mr_status);
if (ret) {
pr_err("ib_check_mr_status failed, ret %d\n", ret);
isert_err("ib_check_mr_status failed, ret %d\n", ret);
goto fail_mr_status;
}
......@@ -1740,7 +1781,7 @@ isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr)
do_div(sec_offset_err, block_size);
se_cmd->bad_sector = sec_offset_err + se_cmd->t_task_lba;
pr_err("isert: PI error found type %d at sector 0x%llx "
isert_err("PI error found type %d at sector 0x%llx "
"expected 0x%x vs actual 0x%x\n",
mr_status.sig_err.err_type,
(unsigned long long)se_cmd->bad_sector,
......@@ -1801,7 +1842,7 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc,
cmd->write_data_done = wr->data.len;
wr->send_wr_num = 0;
pr_debug("Cmd: %p RDMA_READ comp calling execute_cmd\n", isert_cmd);
isert_dbg("Cmd: %p RDMA_READ comp calling execute_cmd\n", isert_cmd);
spin_lock_bh(&cmd->istate_lock);
cmd->cmd_flags |= ICF_GOT_LAST_DATAOUT;
cmd->i_state = ISTATE_RECEIVED_LAST_DATAOUT;
......@@ -1823,36 +1864,22 @@ isert_do_control_comp(struct work_struct *work)
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
isert_dbg("Cmd %p i_state %d\n", isert_cmd, cmd->i_state);
switch (cmd->i_state) {
case ISTATE_SEND_TASKMGTRSP:
pr_debug("Calling iscsit_tmr_post_handler >>>>>>>>>>>>>>>>>\n");
atomic_dec(&isert_conn->post_send_buf_count);
iscsit_tmr_post_handler(cmd, cmd->conn);
case ISTATE_SEND_REJECT: /* FALLTHRU */
case ISTATE_SEND_TEXTRSP: /* FALLTHRU */
cmd->i_state = ISTATE_SENT_STATUS;
isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false);
break;
case ISTATE_SEND_REJECT:
pr_debug("Got isert_do_control_comp ISTATE_SEND_REJECT: >>>\n");
atomic_dec(&isert_conn->post_send_buf_count);
cmd->i_state = ISTATE_SENT_STATUS;
isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false);
isert_completion_put(&isert_cmd->tx_desc, isert_cmd,
ib_dev, false);
break;
case ISTATE_SEND_LOGOUTRSP:
pr_debug("Calling iscsit_logout_post_handler >>>>>>>>>>>>>>\n");
atomic_dec(&isert_conn->post_send_buf_count);
iscsit_logout_post_handler(cmd, cmd->conn);
break;
case ISTATE_SEND_TEXTRSP:
atomic_dec(&isert_conn->post_send_buf_count);
cmd->i_state = ISTATE_SENT_STATUS;
isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false);
break;
default:
pr_err("Unknown do_control_comp i_state %d\n", cmd->i_state);
isert_err("Unknown i_state %d\n", cmd->i_state);
dump_stack();
break;
}
......@@ -1865,7 +1892,6 @@ isert_response_completion(struct iser_tx_desc *tx_desc,
struct ib_device *ib_dev)
{
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
if (cmd->i_state == ISTATE_SEND_TASKMGTRSP ||
cmd->i_state == ISTATE_SEND_LOGOUTRSP ||
......@@ -1878,24 +1904,12 @@ isert_response_completion(struct iser_tx_desc *tx_desc,
return;
}
/**
* If send_wr_num is 0 this means that we got
* RDMA completion and we cleared it and we should
* simply decrement the response post. else the
* response is incorporated in send_wr_num, just
* sub it.
**/
if (wr->send_wr_num)
atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count);
else
atomic_dec(&isert_conn->post_send_buf_count);
cmd->i_state = ISTATE_SENT_STATUS;
isert_completion_put(tx_desc, isert_cmd, ib_dev, false);
}
static void
__isert_send_completion(struct iser_tx_desc *tx_desc,
isert_send_completion(struct iser_tx_desc *tx_desc,
struct isert_conn *isert_conn)
{
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
......@@ -1903,242 +1917,138 @@ __isert_send_completion(struct iser_tx_desc *tx_desc,
struct isert_rdma_wr *wr;
if (!isert_cmd) {
atomic_dec(&isert_conn->post_send_buf_count);
isert_unmap_tx_desc(tx_desc, ib_dev);
return;
}
wr = &isert_cmd->rdma_wr;
isert_dbg("Cmd %p iser_ib_op %d\n", isert_cmd, wr->iser_ib_op);
switch (wr->iser_ib_op) {
case ISER_IB_RECV:
pr_err("isert_send_completion: Got ISER_IB_RECV\n");
isert_err("Got ISER_IB_RECV\n");
dump_stack();
break;
case ISER_IB_SEND:
pr_debug("isert_send_completion: Got ISER_IB_SEND\n");
isert_response_completion(tx_desc, isert_cmd,
isert_conn, ib_dev);
break;
case ISER_IB_RDMA_WRITE:
pr_debug("isert_send_completion: Got ISER_IB_RDMA_WRITE\n");
atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count);
isert_completion_rdma_write(tx_desc, isert_cmd);
break;
case ISER_IB_RDMA_READ:
pr_debug("isert_send_completion: Got ISER_IB_RDMA_READ:\n");
atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count);
isert_completion_rdma_read(tx_desc, isert_cmd);
break;
default:
pr_err("Unknown wr->iser_ib_op: 0x%02x\n", wr->iser_ib_op);
isert_err("Unknown wr->iser_ib_op: 0x%x\n", wr->iser_ib_op);
dump_stack();
break;
}
}
static void
isert_send_completion(struct iser_tx_desc *tx_desc,
struct isert_conn *isert_conn)
{
struct llist_node *llnode = tx_desc->comp_llnode_batch;
struct iser_tx_desc *t;
/*
* Drain coalesced completion llist starting from comp_llnode_batch
* setup in isert_init_send_wr(), and then complete trailing tx_desc.
/**
* is_isert_tx_desc() - Indicate if the completion wr_id
* is a TX descriptor or not.
* @isert_conn: iser connection
* @wr_id: completion WR identifier
*
* Since we cannot rely on wc opcode in FLUSH errors
* we must work around it by checking if the wr_id address
* falls in the iser connection rx_descs buffer. If so
* it is an RX descriptor, otherwize it is a TX.
*/
while (llnode) {
t = llist_entry(llnode, struct iser_tx_desc, comp_llnode);
llnode = llist_next(llnode);
__isert_send_completion(t, isert_conn);
}
__isert_send_completion(tx_desc, isert_conn);
}
static void
isert_cq_drain_comp_llist(struct isert_conn *isert_conn, struct ib_device *ib_dev)
static inline bool
is_isert_tx_desc(struct isert_conn *isert_conn, void *wr_id)
{
struct llist_node *llnode;
struct isert_rdma_wr *wr;
struct iser_tx_desc *t;
void *start = isert_conn->conn_rx_descs;
int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->conn_rx_descs);
mutex_lock(&isert_conn->conn_mutex);
llnode = llist_del_all(&isert_conn->conn_comp_llist);
isert_conn->conn_comp_batch = 0;
mutex_unlock(&isert_conn->conn_mutex);
while (llnode) {
t = llist_entry(llnode, struct iser_tx_desc, comp_llnode);
llnode = llist_next(llnode);
wr = &t->isert_cmd->rdma_wr;
if (wr_id >= start && wr_id < start + len)
return false;
/**
* If send_wr_num is 0 this means that we got
* RDMA completion and we cleared it and we should
* simply decrement the response post. else the
* response is incorporated in send_wr_num, just
* sub it.
**/
if (wr->send_wr_num)
atomic_sub(wr->send_wr_num,
&isert_conn->post_send_buf_count);
else
atomic_dec(&isert_conn->post_send_buf_count);
isert_completion_put(t, t->isert_cmd, ib_dev, true);
}
return true;
}
static void
isert_cq_tx_comp_err(struct iser_tx_desc *tx_desc, struct isert_conn *isert_conn)
isert_cq_comp_err(struct isert_conn *isert_conn, struct ib_wc *wc)
{
if (wc->wr_id == ISER_BEACON_WRID) {
isert_info("conn %p completing conn_wait_comp_err\n",
isert_conn);
complete(&isert_conn->conn_wait_comp_err);
} else if (is_isert_tx_desc(isert_conn, (void *)(uintptr_t)wc->wr_id)) {
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct isert_cmd *isert_cmd = tx_desc->isert_cmd;
struct llist_node *llnode = tx_desc->comp_llnode_batch;
struct isert_rdma_wr *wr;
struct iser_tx_desc *t;
while (llnode) {
t = llist_entry(llnode, struct iser_tx_desc, comp_llnode);
llnode = llist_next(llnode);
wr = &t->isert_cmd->rdma_wr;
/**
* If send_wr_num is 0 this means that we got
* RDMA completion and we cleared it and we should
* simply decrement the response post. else the
* response is incorporated in send_wr_num, just
* sub it.
**/
if (wr->send_wr_num)
atomic_sub(wr->send_wr_num,
&isert_conn->post_send_buf_count);
else
atomic_dec(&isert_conn->post_send_buf_count);
isert_completion_put(t, t->isert_cmd, ib_dev, true);
}
tx_desc->comp_llnode_batch = NULL;
struct isert_cmd *isert_cmd;
struct iser_tx_desc *desc;
desc = (struct iser_tx_desc *)(uintptr_t)wc->wr_id;
isert_cmd = desc->isert_cmd;
if (!isert_cmd)
isert_unmap_tx_desc(tx_desc, ib_dev);
isert_unmap_tx_desc(desc, ib_dev);
else
isert_completion_put(tx_desc, isert_cmd, ib_dev, true);
}
static void
isert_cq_rx_comp_err(struct isert_conn *isert_conn)
{
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
struct iscsi_conn *conn = isert_conn->conn;
if (isert_conn->post_recv_buf_count)
return;
isert_cq_drain_comp_llist(isert_conn, ib_dev);
if (conn->sess) {
target_sess_cmd_list_set_waiting(conn->sess->se_sess);
target_wait_for_sess_cmds(conn->sess->se_sess);
}
while (atomic_read(&isert_conn->post_send_buf_count))
msleep(3000);
mutex_lock(&isert_conn->conn_mutex);
isert_conn->state = ISER_CONN_DOWN;
mutex_unlock(&isert_conn->conn_mutex);
isert_completion_put(desc, isert_cmd, ib_dev, true);
} else {
isert_conn->post_recv_buf_count--;
if (!isert_conn->post_recv_buf_count)
iscsit_cause_connection_reinstatement(isert_conn->conn, 0);
complete(&isert_conn->conn_wait_comp_err);
}
}
static void
isert_cq_tx_work(struct work_struct *work)
isert_handle_wc(struct ib_wc *wc)
{
struct isert_cq_desc *cq_desc = container_of(work,
struct isert_cq_desc, cq_tx_work);
struct isert_device *device = cq_desc->device;
int cq_index = cq_desc->cq_index;
struct ib_cq *tx_cq = device->dev_tx_cq[cq_index];
struct isert_conn *isert_conn;
struct iser_tx_desc *tx_desc;
struct ib_wc wc;
while (ib_poll_cq(tx_cq, 1, &wc) == 1) {
tx_desc = (struct iser_tx_desc *)(unsigned long)wc.wr_id;
isert_conn = wc.qp->qp_context;
struct iser_rx_desc *rx_desc;
if (wc.status == IB_WC_SUCCESS) {
isert_conn = wc->qp->qp_context;
if (likely(wc->status == IB_WC_SUCCESS)) {
if (wc->opcode == IB_WC_RECV) {
rx_desc = (struct iser_rx_desc *)(uintptr_t)wc->wr_id;
isert_rx_completion(rx_desc, isert_conn, wc->byte_len);
} else {
tx_desc = (struct iser_tx_desc *)(uintptr_t)wc->wr_id;
isert_send_completion(tx_desc, isert_conn);
}
} else {
pr_debug("TX wc.status != IB_WC_SUCCESS >>>>>>>>>>>>>>\n");
pr_debug("TX wc.status: 0x%08x\n", wc.status);
pr_debug("TX wc.vendor_err: 0x%08x\n", wc.vendor_err);
if (wc.wr_id != ISER_FASTREG_LI_WRID) {
if (tx_desc->llnode_active)
continue;
if (wc->status != IB_WC_WR_FLUSH_ERR)
isert_err("wr id %llx status %d vend_err %x\n",
wc->wr_id, wc->status, wc->vendor_err);
else
isert_dbg("flush error: wr id %llx\n", wc->wr_id);
atomic_dec(&isert_conn->post_send_buf_count);
isert_cq_tx_comp_err(tx_desc, isert_conn);
}
if (wc->wr_id != ISER_FASTREG_LI_WRID)
isert_cq_comp_err(isert_conn, wc);
}
}
ib_req_notify_cq(tx_cq, IB_CQ_NEXT_COMP);
}
static void
isert_cq_tx_callback(struct ib_cq *cq, void *context)
isert_cq_work(struct work_struct *work)
{
struct isert_cq_desc *cq_desc = (struct isert_cq_desc *)context;
queue_work(isert_comp_wq, &cq_desc->cq_tx_work);
}
enum { isert_poll_budget = 65536 };
struct isert_comp *comp = container_of(work, struct isert_comp,
work);
struct ib_wc *const wcs = comp->wcs;
int i, n, completed = 0;
static void
isert_cq_rx_work(struct work_struct *work)
{
struct isert_cq_desc *cq_desc = container_of(work,
struct isert_cq_desc, cq_rx_work);
struct isert_device *device = cq_desc->device;
int cq_index = cq_desc->cq_index;
struct ib_cq *rx_cq = device->dev_rx_cq[cq_index];
struct isert_conn *isert_conn;
struct iser_rx_desc *rx_desc;
struct ib_wc wc;
unsigned long xfer_len;
while ((n = ib_poll_cq(comp->cq, ARRAY_SIZE(comp->wcs), wcs)) > 0) {
for (i = 0; i < n; i++)
isert_handle_wc(&wcs[i]);
while (ib_poll_cq(rx_cq, 1, &wc) == 1) {
rx_desc = (struct iser_rx_desc *)(unsigned long)wc.wr_id;
isert_conn = wc.qp->qp_context;
if (wc.status == IB_WC_SUCCESS) {
xfer_len = (unsigned long)wc.byte_len;
isert_rx_completion(rx_desc, isert_conn, xfer_len);
} else {
pr_debug("RX wc.status != IB_WC_SUCCESS >>>>>>>>>>>>>>\n");
if (wc.status != IB_WC_WR_FLUSH_ERR) {
pr_debug("RX wc.status: 0x%08x\n", wc.status);
pr_debug("RX wc.vendor_err: 0x%08x\n",
wc.vendor_err);
}
isert_conn->post_recv_buf_count--;
isert_cq_rx_comp_err(isert_conn);
}
completed += n;
if (completed >= isert_poll_budget)
break;
}
ib_req_notify_cq(rx_cq, IB_CQ_NEXT_COMP);
ib_req_notify_cq(comp->cq, IB_CQ_NEXT_COMP);
}
static void
isert_cq_rx_callback(struct ib_cq *cq, void *context)
isert_cq_callback(struct ib_cq *cq, void *context)
{
struct isert_cq_desc *cq_desc = (struct isert_cq_desc *)context;
struct isert_comp *comp = context;
queue_work(isert_rx_wq, &cq_desc->cq_rx_work);
queue_work(isert_comp_wq, &comp->work);
}
static int
......@@ -2147,13 +2057,10 @@ isert_post_response(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd)
struct ib_send_wr *wr_failed;
int ret;
atomic_inc(&isert_conn->post_send_buf_count);
ret = ib_post_send(isert_conn->conn_qp, &isert_cmd->tx_desc.send_wr,
&wr_failed);
if (ret) {
pr_err("ib_post_send failed with %d\n", ret);
atomic_dec(&isert_conn->post_send_buf_count);
isert_err("ib_post_send failed with %d\n", ret);
return ret;
}
return ret;
......@@ -2200,9 +2107,9 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
isert_cmd->tx_desc.num_sge = 2;
}
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting SCSI Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("Posting SCSI Response\n");
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2231,8 +2138,16 @@ isert_get_sup_prot_ops(struct iscsi_conn *conn)
struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
struct isert_device *device = isert_conn->conn_device;
if (device->pi_capable)
if (conn->tpg->tpg_attrib.t10_pi) {
if (device->pi_capable) {
isert_info("conn %p PI offload enabled\n", isert_conn);
isert_conn->pi_support = true;
return TARGET_PROT_ALL;
}
}
isert_info("conn %p PI offload disabled\n", isert_conn);
isert_conn->pi_support = false;
return TARGET_PROT_NORMAL;
}
......@@ -2250,9 +2165,9 @@ isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn,
&isert_cmd->tx_desc.iscsi_header,
nopout_response);
isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting NOPIN Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p Posting NOPIN Response\n", isert_conn);
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2268,9 +2183,9 @@ isert_put_logout_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
iscsit_build_logout_rsp(cmd, conn, (struct iscsi_logout_rsp *)
&isert_cmd->tx_desc.iscsi_header);
isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting Logout Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p Posting Logout Response\n", isert_conn);
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2286,9 +2201,9 @@ isert_put_tm_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
iscsit_build_task_mgt_rsp(cmd, conn, (struct iscsi_tm_rsp *)
&isert_cmd->tx_desc.iscsi_header);
isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting Task Management Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p Posting Task Management Response\n", isert_conn);
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2318,9 +2233,9 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
tx_dsg->lkey = isert_conn->conn_mr->lkey;
isert_cmd->tx_desc.num_sge = 2;
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting Reject IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p Posting Reject\n", isert_conn);
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2358,9 +2273,9 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
tx_dsg->lkey = isert_conn->conn_mr->lkey;
isert_cmd->tx_desc.num_sge = 2;
}
isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
isert_init_send_wr(isert_conn, isert_cmd, send_wr);
pr_debug("Posting Text Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
isert_dbg("conn %p Text Reject\n", isert_conn);
return isert_post_response(isert_conn, isert_cmd);
}
......@@ -2383,12 +2298,13 @@ isert_build_rdma_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd,
send_wr->sg_list = ib_sge;
send_wr->num_sge = sg_nents;
send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc;
send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc;
/*
* Perform mapping of TCM scatterlist memory ib_sge dma_addr.
*/
for_each_sg(sg_start, tmp_sg, sg_nents, i) {
pr_debug("ISER RDMA from SGL dma_addr: 0x%16llx dma_len: %u, page_off: %u\n",
isert_dbg("RDMA from SGL dma_addr: 0x%llx dma_len: %u, "
"page_off: %u\n",
(unsigned long long)tmp_sg->dma_address,
tmp_sg->length, page_off);
......@@ -2397,15 +2313,15 @@ isert_build_rdma_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd,
ib_sg_dma_len(ib_dev, tmp_sg) - page_off);
ib_sge->lkey = isert_conn->conn_mr->lkey;
pr_debug("RDMA ib_sge: addr: 0x%16llx length: %u lkey: %08x\n",
isert_dbg("RDMA ib_sge: addr: 0x%llx length: %u lkey: %x\n",
ib_sge->addr, ib_sge->length, ib_sge->lkey);
page_off = 0;
data_left -= ib_sge->length;
ib_sge++;
pr_debug("Incrementing ib_sge pointer to %p\n", ib_sge);
isert_dbg("Incrementing ib_sge pointer to %p\n", ib_sge);
}
pr_debug("Set outgoing sg_list: %p num_sg: %u from TCM SGLs\n",
isert_dbg("Set outgoing sg_list: %p num_sg: %u from TCM SGLs\n",
send_wr->sg_list, send_wr->num_sge);
return sg_nents;
......@@ -2438,7 +2354,7 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
ib_sge = kzalloc(sizeof(struct ib_sge) * data->nents, GFP_KERNEL);
if (!ib_sge) {
pr_warn("Unable to allocate ib_sge\n");
isert_warn("Unable to allocate ib_sge\n");
ret = -ENOMEM;
goto unmap_cmd;
}
......@@ -2448,7 +2364,7 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
wr->send_wr = kzalloc(sizeof(struct ib_send_wr) * wr->send_wr_num,
GFP_KERNEL);
if (!wr->send_wr) {
pr_debug("Unable to allocate wr->send_wr\n");
isert_dbg("Unable to allocate wr->send_wr\n");
ret = -ENOMEM;
goto unmap_cmd;
}
......@@ -2512,7 +2428,7 @@ isert_map_fr_pagelist(struct ib_device *ib_dev,
chunk_start = start_addr;
end_addr = start_addr + ib_sg_dma_len(ib_dev, tmp_sg);
pr_debug("SGL[%d] dma_addr: 0x%16llx len: %u\n",
isert_dbg("SGL[%d] dma_addr: 0x%llx len: %u\n",
i, (unsigned long long)tmp_sg->dma_address,
tmp_sg->length);
......@@ -2525,7 +2441,7 @@ isert_map_fr_pagelist(struct ib_device *ib_dev,
page = chunk_start & PAGE_MASK;
do {
fr_pl[n_pages++] = page;
pr_debug("Mapped page_list[%d] page_addr: 0x%16llx\n",
isert_dbg("Mapped page_list[%d] page_addr: 0x%llx\n",
n_pages - 1, page);
page += PAGE_SIZE;
} while (page < end_addr);
......@@ -2534,6 +2450,21 @@ isert_map_fr_pagelist(struct ib_device *ib_dev,
return n_pages;
}
static inline void
isert_inv_rkey(struct ib_send_wr *inv_wr, struct ib_mr *mr)
{
u32 rkey;
memset(inv_wr, 0, sizeof(*inv_wr));
inv_wr->wr_id = ISER_FASTREG_LI_WRID;
inv_wr->opcode = IB_WR_LOCAL_INV;
inv_wr->ex.invalidate_rkey = mr->rkey;
/* Bump the key */
rkey = ib_inc_rkey(mr->rkey);
ib_update_fast_reg_key(mr, rkey);
}
static int
isert_fast_reg_mr(struct isert_conn *isert_conn,
struct fast_reg_descriptor *fr_desc,
......@@ -2548,15 +2479,13 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
struct ib_send_wr *bad_wr, *wr = NULL;
int ret, pagelist_len;
u32 page_off;
u8 key;
if (mem->dma_nents == 1) {
sge->lkey = isert_conn->conn_mr->lkey;
sge->addr = ib_sg_dma_address(ib_dev, &mem->sg[0]);
sge->length = ib_sg_dma_len(ib_dev, &mem->sg[0]);
pr_debug("%s:%d sge: addr: 0x%llx length: %u lkey: %x\n",
__func__, __LINE__, sge->addr, sge->length,
sge->lkey);
isert_dbg("sge: addr: 0x%llx length: %u lkey: %x\n",
sge->addr, sge->length, sge->lkey);
return 0;
}
......@@ -2572,21 +2501,15 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
page_off = mem->offset % PAGE_SIZE;
pr_debug("Use fr_desc %p sg_nents %d offset %u\n",
isert_dbg("Use fr_desc %p sg_nents %d offset %u\n",
fr_desc, mem->nents, mem->offset);
pagelist_len = isert_map_fr_pagelist(ib_dev, mem->sg, mem->nents,
&frpl->page_list[0]);
if (!(fr_desc->ind & ISERT_DATA_KEY_VALID)) {
memset(&inv_wr, 0, sizeof(inv_wr));
inv_wr.wr_id = ISER_FASTREG_LI_WRID;
inv_wr.opcode = IB_WR_LOCAL_INV;
inv_wr.ex.invalidate_rkey = mr->rkey;
if (!(fr_desc->ind & ind)) {
isert_inv_rkey(&inv_wr, mr);
wr = &inv_wr;
/* Bump the key */
key = (u8)(mr->rkey & 0x000000FF);
ib_update_fast_reg_key(mr, ++key);
}
/* Prepare FASTREG WR */
......@@ -2608,7 +2531,7 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr);
if (ret) {
pr_err("fast registration failed, ret:%d\n", ret);
isert_err("fast registration failed, ret:%d\n", ret);
return ret;
}
fr_desc->ind &= ~ind;
......@@ -2617,9 +2540,8 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
sge->addr = frpl->page_list[0] + page_off;
sge->length = mem->len;
pr_debug("%s:%d sge: addr: 0x%llx length: %u lkey: %x\n",
__func__, __LINE__, sge->addr, sge->length,
sge->lkey);
isert_dbg("sge: addr: 0x%llx length: %u lkey: %x\n",
sge->addr, sge->length, sge->lkey);
return ret;
}
......@@ -2665,7 +2587,7 @@ isert_set_sig_attrs(struct se_cmd *se_cmd, struct ib_sig_attrs *sig_attrs)
isert_set_dif_domain(se_cmd, sig_attrs, &sig_attrs->mem);
break;
default:
pr_err("Unsupported PI operation %d\n", se_cmd->prot_op);
isert_err("Unsupported PI operation %d\n", se_cmd->prot_op);
return -EINVAL;
}
......@@ -2681,17 +2603,16 @@ isert_set_prot_checks(u8 prot_checks)
}
static int
isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd,
struct fast_reg_descriptor *fr_desc,
struct ib_sge *data_sge, struct ib_sge *prot_sge,
struct ib_sge *sig_sge)
isert_reg_sig_mr(struct isert_conn *isert_conn,
struct se_cmd *se_cmd,
struct isert_rdma_wr *rdma_wr,
struct fast_reg_descriptor *fr_desc)
{
struct ib_send_wr sig_wr, inv_wr;
struct ib_send_wr *bad_wr, *wr = NULL;
struct pi_context *pi_ctx = fr_desc->pi_ctx;
struct ib_sig_attrs sig_attrs;
int ret;
u32 key;
memset(&sig_attrs, 0, sizeof(sig_attrs));
ret = isert_set_sig_attrs(se_cmd, &sig_attrs);
......@@ -2701,26 +2622,20 @@ isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd,
sig_attrs.check_mask = isert_set_prot_checks(se_cmd->prot_checks);
if (!(fr_desc->ind & ISERT_SIG_KEY_VALID)) {
memset(&inv_wr, 0, sizeof(inv_wr));
inv_wr.opcode = IB_WR_LOCAL_INV;
inv_wr.wr_id = ISER_FASTREG_LI_WRID;
inv_wr.ex.invalidate_rkey = pi_ctx->sig_mr->rkey;
isert_inv_rkey(&inv_wr, pi_ctx->sig_mr);
wr = &inv_wr;
/* Bump the key */
key = (u8)(pi_ctx->sig_mr->rkey & 0x000000FF);
ib_update_fast_reg_key(pi_ctx->sig_mr, ++key);
}
memset(&sig_wr, 0, sizeof(sig_wr));
sig_wr.opcode = IB_WR_REG_SIG_MR;
sig_wr.wr_id = ISER_FASTREG_LI_WRID;
sig_wr.sg_list = data_sge;
sig_wr.sg_list = &rdma_wr->ib_sg[DATA];
sig_wr.num_sge = 1;
sig_wr.wr.sig_handover.access_flags = IB_ACCESS_LOCAL_WRITE;
sig_wr.wr.sig_handover.sig_attrs = &sig_attrs;
sig_wr.wr.sig_handover.sig_mr = pi_ctx->sig_mr;
if (se_cmd->t_prot_sg)
sig_wr.wr.sig_handover.prot = prot_sge;
sig_wr.wr.sig_handover.prot = &rdma_wr->ib_sg[PROT];
if (!wr)
wr = &sig_wr;
......@@ -2729,29 +2644,88 @@ isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd,
ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr);
if (ret) {
pr_err("fast registration failed, ret:%d\n", ret);
isert_err("fast registration failed, ret:%d\n", ret);
goto err;
}
fr_desc->ind &= ~ISERT_SIG_KEY_VALID;
sig_sge->lkey = pi_ctx->sig_mr->lkey;
sig_sge->addr = 0;
sig_sge->length = se_cmd->data_length;
rdma_wr->ib_sg[SIG].lkey = pi_ctx->sig_mr->lkey;
rdma_wr->ib_sg[SIG].addr = 0;
rdma_wr->ib_sg[SIG].length = se_cmd->data_length;
if (se_cmd->prot_op != TARGET_PROT_DIN_STRIP &&
se_cmd->prot_op != TARGET_PROT_DOUT_INSERT)
/*
* We have protection guards on the wire
* so we need to set a larget transfer
*/
sig_sge->length += se_cmd->prot_length;
rdma_wr->ib_sg[SIG].length += se_cmd->prot_length;
pr_debug("sig_sge: addr: 0x%llx length: %u lkey: %x\n",
sig_sge->addr, sig_sge->length,
sig_sge->lkey);
isert_dbg("sig_sge: addr: 0x%llx length: %u lkey: %x\n",
rdma_wr->ib_sg[SIG].addr, rdma_wr->ib_sg[SIG].length,
rdma_wr->ib_sg[SIG].lkey);
err:
return ret;
}
static int
isert_handle_prot_cmd(struct isert_conn *isert_conn,
struct isert_cmd *isert_cmd,
struct isert_rdma_wr *wr)
{
struct isert_device *device = isert_conn->conn_device;
struct se_cmd *se_cmd = &isert_cmd->iscsi_cmd->se_cmd;
int ret;
if (!wr->fr_desc->pi_ctx) {
ret = isert_create_pi_ctx(wr->fr_desc,
device->ib_device,
isert_conn->conn_pd);
if (ret) {
isert_err("conn %p failed to allocate pi_ctx\n",
isert_conn);
return ret;
}
}
if (se_cmd->t_prot_sg) {
ret = isert_map_data_buf(isert_conn, isert_cmd,
se_cmd->t_prot_sg,
se_cmd->t_prot_nents,
se_cmd->prot_length,
0, wr->iser_ib_op, &wr->prot);
if (ret) {
isert_err("conn %p failed to map protection buffer\n",
isert_conn);
return ret;
}
memset(&wr->ib_sg[PROT], 0, sizeof(wr->ib_sg[PROT]));
ret = isert_fast_reg_mr(isert_conn, wr->fr_desc, &wr->prot,
ISERT_PROT_KEY_VALID, &wr->ib_sg[PROT]);
if (ret) {
isert_err("conn %p failed to fast reg mr\n",
isert_conn);
goto unmap_prot_cmd;
}
}
ret = isert_reg_sig_mr(isert_conn, se_cmd, wr, wr->fr_desc);
if (ret) {
isert_err("conn %p failed to fast reg mr\n",
isert_conn);
goto unmap_prot_cmd;
}
wr->fr_desc->ind |= ISERT_PROTECTED;
return 0;
unmap_prot_cmd:
if (se_cmd->t_prot_sg)
isert_unmap_data_buf(isert_conn, &wr->prot);
return ret;
}
static int
isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr)
......@@ -2759,9 +2733,9 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
struct isert_conn *isert_conn = conn->context;
struct ib_sge data_sge;
struct ib_send_wr *send_wr;
struct fast_reg_descriptor *fr_desc = NULL;
struct ib_send_wr *send_wr;
struct ib_sge *ib_sg;
u32 offset;
int ret = 0;
unsigned long flags;
......@@ -2775,8 +2749,7 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
if (ret)
return ret;
if (wr->data.dma_nents != 1 ||
se_cmd->prot_op != TARGET_PROT_NORMAL) {
if (wr->data.dma_nents != 1 || isert_prot_cmd(isert_conn, se_cmd)) {
spin_lock_irqsave(&isert_conn->conn_lock, flags);
fr_desc = list_first_entry(&isert_conn->conn_fr_pool,
struct fast_reg_descriptor, list);
......@@ -2786,38 +2759,21 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
}
ret = isert_fast_reg_mr(isert_conn, fr_desc, &wr->data,
ISERT_DATA_KEY_VALID, &data_sge);
ISERT_DATA_KEY_VALID, &wr->ib_sg[DATA]);
if (ret)
goto unmap_cmd;
if (se_cmd->prot_op != TARGET_PROT_NORMAL) {
struct ib_sge prot_sge, sig_sge;
if (se_cmd->t_prot_sg) {
ret = isert_map_data_buf(isert_conn, isert_cmd,
se_cmd->t_prot_sg,
se_cmd->t_prot_nents,
se_cmd->prot_length,
0, wr->iser_ib_op, &wr->prot);
if (isert_prot_cmd(isert_conn, se_cmd)) {
ret = isert_handle_prot_cmd(isert_conn, isert_cmd, wr);
if (ret)
goto unmap_cmd;
ret = isert_fast_reg_mr(isert_conn, fr_desc, &wr->prot,
ISERT_PROT_KEY_VALID, &prot_sge);
if (ret)
goto unmap_prot_cmd;
ib_sg = &wr->ib_sg[SIG];
} else {
ib_sg = &wr->ib_sg[DATA];
}
ret = isert_reg_sig_mr(isert_conn, se_cmd, fr_desc,
&data_sge, &prot_sge, &sig_sge);
if (ret)
goto unmap_prot_cmd;
fr_desc->ind |= ISERT_PROTECTED;
memcpy(&wr->s_ib_sge, &sig_sge, sizeof(sig_sge));
} else
memcpy(&wr->s_ib_sge, &data_sge, sizeof(data_sge));
memcpy(&wr->s_ib_sge, ib_sg, sizeof(*ib_sg));
wr->ib_sge = &wr->s_ib_sge;
wr->send_wr_num = 1;
memset(&wr->s_send_wr, 0, sizeof(*send_wr));
......@@ -2827,12 +2783,12 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
send_wr = &isert_cmd->rdma_wr.s_send_wr;
send_wr->sg_list = &wr->s_ib_sge;
send_wr->num_sge = 1;
send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc;
send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc;
if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
send_wr->opcode = IB_WR_RDMA_WRITE;
send_wr->wr.rdma.remote_addr = isert_cmd->read_va;
send_wr->wr.rdma.rkey = isert_cmd->read_stag;
send_wr->send_flags = se_cmd->prot_op == TARGET_PROT_NORMAL ?
send_wr->send_flags = !isert_prot_cmd(isert_conn, se_cmd) ?
0 : IB_SEND_SIGNALED;
} else {
send_wr->opcode = IB_WR_RDMA_READ;
......@@ -2842,9 +2798,7 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
}
return 0;
unmap_prot_cmd:
if (se_cmd->t_prot_sg)
isert_unmap_data_buf(isert_conn, &wr->prot);
unmap_cmd:
if (fr_desc) {
spin_lock_irqsave(&isert_conn->conn_lock, flags);
......@@ -2867,16 +2821,17 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
struct ib_send_wr *wr_failed;
int rc;
pr_debug("Cmd: %p RDMA_WRITE data_length: %u\n",
isert_dbg("Cmd: %p RDMA_WRITE data_length: %u\n",
isert_cmd, se_cmd->data_length);
wr->iser_ib_op = ISER_IB_RDMA_WRITE;
rc = device->reg_rdma_mem(conn, cmd, wr);
if (rc) {
pr_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd);
isert_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd);
return rc;
}
if (se_cmd->prot_op == TARGET_PROT_NORMAL) {
if (!isert_prot_cmd(isert_conn, se_cmd)) {
/*
* Build isert_conn->tx_desc for iSCSI response PDU and attach
*/
......@@ -2886,24 +2841,20 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
&isert_cmd->tx_desc.iscsi_header);
isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
isert_init_send_wr(isert_conn, isert_cmd,
&isert_cmd->tx_desc.send_wr, false);
&isert_cmd->tx_desc.send_wr);
isert_cmd->rdma_wr.s_send_wr.next = &isert_cmd->tx_desc.send_wr;
wr->send_wr_num += 1;
}
atomic_add(wr->send_wr_num, &isert_conn->post_send_buf_count);
rc = ib_post_send(isert_conn->conn_qp, wr->send_wr, &wr_failed);
if (rc) {
pr_warn("ib_post_send() failed for IB_WR_RDMA_WRITE\n");
atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count);
}
if (rc)
isert_warn("ib_post_send() failed for IB_WR_RDMA_WRITE\n");
if (se_cmd->prot_op == TARGET_PROT_NORMAL)
pr_debug("Cmd: %p posted RDMA_WRITE + Response for iSER Data "
if (!isert_prot_cmd(isert_conn, se_cmd))
isert_dbg("Cmd: %p posted RDMA_WRITE + Response for iSER Data "
"READ\n", isert_cmd);
else
pr_debug("Cmd: %p posted RDMA_WRITE for iSER Data READ\n",
isert_dbg("Cmd: %p posted RDMA_WRITE for iSER Data READ\n",
isert_cmd);
return 1;
......@@ -2920,23 +2871,20 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery)
struct ib_send_wr *wr_failed;
int rc;
pr_debug("Cmd: %p RDMA_READ data_length: %u write_data_done: %u\n",
isert_dbg("Cmd: %p RDMA_READ data_length: %u write_data_done: %u\n",
isert_cmd, se_cmd->data_length, cmd->write_data_done);
wr->iser_ib_op = ISER_IB_RDMA_READ;
rc = device->reg_rdma_mem(conn, cmd, wr);
if (rc) {
pr_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd);
isert_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd);
return rc;
}
atomic_add(wr->send_wr_num, &isert_conn->post_send_buf_count);
rc = ib_post_send(isert_conn->conn_qp, wr->send_wr, &wr_failed);
if (rc) {
pr_warn("ib_post_send() failed for IB_WR_RDMA_READ\n");
atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count);
}
pr_debug("Cmd: %p posted RDMA_READ memory for ISER Data WRITE\n",
if (rc)
isert_warn("ib_post_send() failed for IB_WR_RDMA_READ\n");
isert_dbg("Cmd: %p posted RDMA_READ memory for ISER Data WRITE\n",
isert_cmd);
return 0;
......@@ -2952,7 +2900,7 @@ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
ret = isert_put_nopin(cmd, conn, false);
break;
default:
pr_err("Unknown immediate state: 0x%02x\n", state);
isert_err("Unknown immediate state: 0x%02x\n", state);
ret = -EINVAL;
break;
}
......@@ -2963,15 +2911,14 @@ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
static int
isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
{
struct isert_conn *isert_conn = conn->context;
int ret;
switch (state) {
case ISTATE_SEND_LOGOUTRSP:
ret = isert_put_logout_rsp(cmd, conn);
if (!ret) {
pr_debug("Returning iSER Logout -EAGAIN\n");
ret = -EAGAIN;
}
if (!ret)
isert_conn->logout_posted = true;
break;
case ISTATE_SEND_NOPIN:
ret = isert_put_nopin(cmd, conn, true);
......@@ -2993,7 +2940,7 @@ isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
ret = isert_put_response(conn, cmd);
break;
default:
pr_err("Unknown response state: 0x%02x\n", state);
isert_err("Unknown response state: 0x%02x\n", state);
ret = -EINVAL;
break;
}
......@@ -3001,27 +2948,64 @@ isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
return ret;
}
struct rdma_cm_id *
isert_setup_id(struct isert_np *isert_np)
{
struct iscsi_np *np = isert_np->np;
struct rdma_cm_id *id;
struct sockaddr *sa;
int ret;
sa = (struct sockaddr *)&np->np_sockaddr;
isert_dbg("ksockaddr: %p, sa: %p\n", &np->np_sockaddr, sa);
id = rdma_create_id(isert_cma_handler, isert_np,
RDMA_PS_TCP, IB_QPT_RC);
if (IS_ERR(id)) {
isert_err("rdma_create_id() failed: %ld\n", PTR_ERR(id));
ret = PTR_ERR(id);
goto out;
}
isert_dbg("id %p context %p\n", id, id->context);
ret = rdma_bind_addr(id, sa);
if (ret) {
isert_err("rdma_bind_addr() failed: %d\n", ret);
goto out_id;
}
ret = rdma_listen(id, ISERT_RDMA_LISTEN_BACKLOG);
if (ret) {
isert_err("rdma_listen() failed: %d\n", ret);
goto out_id;
}
return id;
out_id:
rdma_destroy_id(id);
out:
return ERR_PTR(ret);
}
static int
isert_setup_np(struct iscsi_np *np,
struct __kernel_sockaddr_storage *ksockaddr)
{
struct isert_np *isert_np;
struct rdma_cm_id *isert_lid;
struct sockaddr *sa;
int ret;
isert_np = kzalloc(sizeof(struct isert_np), GFP_KERNEL);
if (!isert_np) {
pr_err("Unable to allocate struct isert_np\n");
isert_err("Unable to allocate struct isert_np\n");
return -ENOMEM;
}
sema_init(&isert_np->np_sem, 0);
mutex_init(&isert_np->np_accept_mutex);
INIT_LIST_HEAD(&isert_np->np_accept_list);
init_completion(&isert_np->np_login_comp);
isert_np->np = np;
sa = (struct sockaddr *)ksockaddr;
pr_debug("ksockaddr: %p, sa: %p\n", ksockaddr, sa);
/*
* Setup the np->np_sockaddr from the passed sockaddr setup
* in iscsi_target_configfs.c code..
......@@ -3029,37 +3013,20 @@ isert_setup_np(struct iscsi_np *np,
memcpy(&np->np_sockaddr, ksockaddr,
sizeof(struct __kernel_sockaddr_storage));
isert_lid = rdma_create_id(isert_cma_handler, np, RDMA_PS_TCP,
IB_QPT_RC);
isert_lid = isert_setup_id(isert_np);
if (IS_ERR(isert_lid)) {
pr_err("rdma_create_id() for isert_listen_handler failed: %ld\n",
PTR_ERR(isert_lid));
ret = PTR_ERR(isert_lid);
goto out;
}
ret = rdma_bind_addr(isert_lid, sa);
if (ret) {
pr_err("rdma_bind_addr() for isert_lid failed: %d\n", ret);
goto out_lid;
}
ret = rdma_listen(isert_lid, ISERT_RDMA_LISTEN_BACKLOG);
if (ret) {
pr_err("rdma_listen() for isert_lid failed: %d\n", ret);
goto out_lid;
}
isert_np->np_cm_id = isert_lid;
np->np_context = isert_np;
pr_debug("Setup isert_lid->context: %p\n", isert_lid->context);
return 0;
out_lid:
rdma_destroy_id(isert_lid);
out:
kfree(isert_np);
return ret;
}
......@@ -3075,16 +3042,12 @@ isert_rdma_accept(struct isert_conn *isert_conn)
cp.retry_count = 7;
cp.rnr_retry_count = 7;
pr_debug("Before rdma_accept >>>>>>>>>>>>>>>>>>>>.\n");
ret = rdma_accept(cm_id, &cp);
if (ret) {
pr_err("rdma_accept() failed with: %d\n", ret);
isert_err("rdma_accept() failed with: %d\n", ret);
return ret;
}
pr_debug("After rdma_accept >>>>>>>>>>>>>>>>>>>>>.\n");
return 0;
}
......@@ -3094,7 +3057,15 @@ isert_get_login_rx(struct iscsi_conn *conn, struct iscsi_login *login)
struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
int ret;
pr_debug("isert_get_login_rx before conn_login_comp conn: %p\n", conn);
isert_info("before login_req comp conn: %p\n", isert_conn);
ret = wait_for_completion_interruptible(&isert_conn->login_req_comp);
if (ret) {
isert_err("isert_conn %p interrupted before got login req\n",
isert_conn);
return ret;
}
reinit_completion(&isert_conn->login_req_comp);
/*
* For login requests after the first PDU, isert_rx_login_req() will
* kick schedule_delayed_work(&conn->login_work) as the packet is
......@@ -3104,11 +3075,15 @@ isert_get_login_rx(struct iscsi_conn *conn, struct iscsi_login *login)
if (!login->first_request)
return 0;
isert_rx_login_req(isert_conn);
isert_info("before conn_login_comp conn: %p\n", conn);
ret = wait_for_completion_interruptible(&isert_conn->conn_login_comp);
if (ret)
return ret;
pr_debug("isert_get_login_rx processing login->req: %p\n", login->req);
isert_info("processing login->req: %p\n", login->req);
return 0;
}
......@@ -3161,7 +3136,7 @@ isert_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
spin_lock_bh(&np->np_thread_lock);
if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) {
spin_unlock_bh(&np->np_thread_lock);
pr_debug("np_thread_state %d for isert_accept_np\n",
isert_dbg("np_thread_state %d for isert_accept_np\n",
np->np_thread_state);
/**
* No point in stalling here when np_thread
......@@ -3186,17 +3161,10 @@ isert_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
isert_conn->conn = conn;
max_accept = 0;
ret = isert_rdma_post_recvl(isert_conn);
if (ret)
return ret;
ret = isert_rdma_accept(isert_conn);
if (ret)
return ret;
isert_set_conn_info(np, conn, isert_conn);
pr_debug("Processing isert_accept_np: isert_conn: %p\n", isert_conn);
isert_dbg("Processing isert_conn: %p\n", isert_conn);
return 0;
}
......@@ -3204,25 +3172,103 @@ static void
isert_free_np(struct iscsi_np *np)
{
struct isert_np *isert_np = (struct isert_np *)np->np_context;
struct isert_conn *isert_conn, *n;
if (isert_np->np_cm_id)
rdma_destroy_id(isert_np->np_cm_id);
/*
* FIXME: At this point we don't have a good way to insure
* that at this point we don't have hanging connections that
* completed RDMA establishment but didn't start iscsi login
* process. So work-around this by cleaning up what ever piled
* up in np_accept_list.
*/
mutex_lock(&isert_np->np_accept_mutex);
if (!list_empty(&isert_np->np_accept_list)) {
isert_info("Still have isert connections, cleaning up...\n");
list_for_each_entry_safe(isert_conn, n,
&isert_np->np_accept_list,
conn_accept_node) {
isert_info("cleaning isert_conn %p state (%d)\n",
isert_conn, isert_conn->state);
isert_connect_release(isert_conn);
}
}
mutex_unlock(&isert_np->np_accept_mutex);
np->np_context = NULL;
kfree(isert_np);
}
static void isert_release_work(struct work_struct *work)
{
struct isert_conn *isert_conn = container_of(work,
struct isert_conn,
release_work);
isert_info("Starting release conn %p\n", isert_conn);
wait_for_completion(&isert_conn->conn_wait);
mutex_lock(&isert_conn->conn_mutex);
isert_conn->state = ISER_CONN_DOWN;
mutex_unlock(&isert_conn->conn_mutex);
isert_info("Destroying conn %p\n", isert_conn);
isert_put_conn(isert_conn);
}
static void
isert_wait4logout(struct isert_conn *isert_conn)
{
struct iscsi_conn *conn = isert_conn->conn;
isert_info("conn %p\n", isert_conn);
if (isert_conn->logout_posted) {
isert_info("conn %p wait for conn_logout_comp\n", isert_conn);
wait_for_completion_timeout(&conn->conn_logout_comp,
SECONDS_FOR_LOGOUT_COMP * HZ);
}
}
static void
isert_wait4cmds(struct iscsi_conn *conn)
{
isert_info("iscsi_conn %p\n", conn);
if (conn->sess) {
target_sess_cmd_list_set_waiting(conn->sess->se_sess);
target_wait_for_sess_cmds(conn->sess->se_sess);
}
}
static void
isert_wait4flush(struct isert_conn *isert_conn)
{
struct ib_recv_wr *bad_wr;
isert_info("conn %p\n", isert_conn);
init_completion(&isert_conn->conn_wait_comp_err);
isert_conn->beacon.wr_id = ISER_BEACON_WRID;
/* post an indication that all flush errors were consumed */
if (ib_post_recv(isert_conn->conn_qp, &isert_conn->beacon, &bad_wr)) {
isert_err("conn %p failed to post beacon", isert_conn);
return;
}
wait_for_completion(&isert_conn->conn_wait_comp_err);
}
static void isert_wait_conn(struct iscsi_conn *conn)
{
struct isert_conn *isert_conn = conn->context;
pr_debug("isert_wait_conn: Starting \n");
isert_info("Starting conn %p\n", isert_conn);
mutex_lock(&isert_conn->conn_mutex);
if (isert_conn->conn_cm_id && !isert_conn->disconnect) {
pr_debug("Calling rdma_disconnect from isert_wait_conn\n");
rdma_disconnect(isert_conn->conn_cm_id);
}
/*
* Only wait for conn_wait_comp_err if the isert_conn made it
* into full feature phase..
......@@ -3231,14 +3277,15 @@ static void isert_wait_conn(struct iscsi_conn *conn)
mutex_unlock(&isert_conn->conn_mutex);
return;
}
if (isert_conn->state == ISER_CONN_UP)
isert_conn->state = ISER_CONN_TERMINATING;
isert_conn_terminate(isert_conn);
mutex_unlock(&isert_conn->conn_mutex);
wait_for_completion(&isert_conn->conn_wait_comp_err);
isert_wait4cmds(conn);
isert_wait4flush(isert_conn);
isert_wait4logout(isert_conn);
wait_for_completion(&isert_conn->conn_wait);
isert_put_conn(isert_conn);
INIT_WORK(&isert_conn->release_work, isert_release_work);
queue_work(isert_release_wq, &isert_conn->release_work);
}
static void isert_free_conn(struct iscsi_conn *conn)
......@@ -3273,35 +3320,39 @@ static int __init isert_init(void)
{
int ret;
isert_rx_wq = alloc_workqueue("isert_rx_wq", 0, 0);
if (!isert_rx_wq) {
pr_err("Unable to allocate isert_rx_wq\n");
isert_comp_wq = alloc_workqueue("isert_comp_wq", 0, 0);
if (!isert_comp_wq) {
isert_err("Unable to allocate isert_comp_wq\n");
ret = -ENOMEM;
return -ENOMEM;
}
isert_comp_wq = alloc_workqueue("isert_comp_wq", 0, 0);
if (!isert_comp_wq) {
pr_err("Unable to allocate isert_comp_wq\n");
isert_release_wq = alloc_workqueue("isert_release_wq", WQ_UNBOUND,
WQ_UNBOUND_MAX_ACTIVE);
if (!isert_release_wq) {
isert_err("Unable to allocate isert_release_wq\n");
ret = -ENOMEM;
goto destroy_rx_wq;
goto destroy_comp_wq;
}
iscsit_register_transport(&iser_target_transport);
pr_debug("iSER_TARGET[0] - Loaded iser_target_transport\n");
isert_info("iSER_TARGET[0] - Loaded iser_target_transport\n");
return 0;
destroy_rx_wq:
destroy_workqueue(isert_rx_wq);
destroy_comp_wq:
destroy_workqueue(isert_comp_wq);
return ret;
}
static void __exit isert_exit(void)
{
flush_scheduled_work();
destroy_workqueue(isert_release_wq);
destroy_workqueue(isert_comp_wq);
destroy_workqueue(isert_rx_wq);
iscsit_unregister_transport(&iser_target_transport);
pr_debug("iSER_TARGET[0] - Released iser_target_transport\n");
isert_info("iSER_TARGET[0] - Released iser_target_transport\n");
}
MODULE_DESCRIPTION("iSER-Target for mainline target infrastructure");
......
drivers/infiniband/ulp/isert/ib_isert.h
View file @ ed55635e
......@@ -4,9 +4,37 @@
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
#define DRV_NAME "isert"
#define PFX DRV_NAME ": "
#define isert_dbg(fmt, arg...) \
do { \
if (unlikely(isert_debug_level > 2)) \
printk(KERN_DEBUG PFX "%s: " fmt,\
__func__ , ## arg); \
} while (0)
#define isert_warn(fmt, arg...) \
do { \
if (unlikely(isert_debug_level > 0)) \
pr_warn(PFX "%s: " fmt, \
__func__ , ## arg); \
} while (0)
#define isert_info(fmt, arg...) \
do { \
if (unlikely(isert_debug_level > 1)) \
pr_info(PFX "%s: " fmt, \
__func__ , ## arg); \
} while (0)
#define isert_err(fmt, arg...) \
pr_err(PFX "%s: " fmt, __func__ , ## arg)
#define ISERT_RDMA_LISTEN_BACKLOG 10
#define ISCSI_ISER_SG_TABLESIZE 256
#define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL
#define ISER_BEACON_WRID 0xfffffffffffffffeULL
enum isert_desc_type {
ISCSI_TX_CONTROL,
......@@ -23,6 +51,7 @@ enum iser_ib_op_code {
enum iser_conn_state {
ISER_CONN_INIT,
ISER_CONN_UP,
ISER_CONN_FULL_FEATURE,
ISER_CONN_TERMINATING,
ISER_CONN_DOWN,
};
......@@ -44,9 +73,6 @@ struct iser_tx_desc {
struct ib_sge tx_sg[2];
int num_sge;
struct isert_cmd *isert_cmd;
struct llist_node *comp_llnode_batch;
struct llist_node comp_llnode;
bool llnode_active;
struct ib_send_wr send_wr;
} __packed;
......@@ -81,6 +107,12 @@ struct isert_data_buf {
enum dma_data_direction dma_dir;
};
enum {
DATA = 0,
PROT = 1,
SIG = 2,
};
struct isert_rdma_wr {
struct list_head wr_list;
struct isert_cmd *isert_cmd;
......@@ -90,6 +122,7 @@ struct isert_rdma_wr {
int send_wr_num;
struct ib_send_wr *send_wr;
struct ib_send_wr s_send_wr;
struct ib_sge ib_sg[3];
struct isert_data_buf data;
struct isert_data_buf prot;
struct fast_reg_descriptor *fr_desc;
......@@ -117,14 +150,15 @@ struct isert_device;
struct isert_conn {
enum iser_conn_state state;
int post_recv_buf_count;
atomic_t post_send_buf_count;
u32 responder_resources;
u32 initiator_depth;
bool pi_support;
u32 max_sge;
char *login_buf;
char *login_req_buf;
char *login_rsp_buf;
u64 login_req_dma;
int login_req_len;
u64 login_rsp_dma;
unsigned int conn_rx_desc_head;
struct iser_rx_desc *conn_rx_descs;
......@@ -132,13 +166,13 @@ struct isert_conn {
struct iscsi_conn *conn;
struct list_head conn_accept_node;
struct completion conn_login_comp;
struct completion login_req_comp;
struct iser_tx_desc conn_login_tx_desc;
struct rdma_cm_id *conn_cm_id;
struct ib_pd *conn_pd;
struct ib_mr *conn_mr;
struct ib_qp *conn_qp;
struct isert_device *conn_device;
struct work_struct conn_logout_work;
struct mutex conn_mutex;
struct completion conn_wait;
struct completion conn_wait_comp_err;
......@@ -147,31 +181,38 @@ struct isert_conn {
int conn_fr_pool_size;
/* lock to protect fastreg pool */
spinlock_t conn_lock;
#define ISERT_COMP_BATCH_COUNT 8
int conn_comp_batch;
struct llist_head conn_comp_llist;
bool disconnect;
struct work_struct release_work;
struct ib_recv_wr beacon;
bool logout_posted;
};
#define ISERT_MAX_CQ 64
struct isert_cq_desc {
/**
* struct isert_comp - iSER completion context
*
* @device: pointer to device handle
* @cq: completion queue
* @wcs: work completion array
* @active_qps: Number of active QPs attached
* to completion context
* @work: completion work handle
*/
struct isert_comp {
struct isert_device *device;
int cq_index;
struct work_struct cq_rx_work;
struct work_struct cq_tx_work;
struct ib_cq *cq;
struct ib_wc wcs[16];
int active_qps;
struct work_struct work;
};
struct isert_device {
int use_fastreg;
bool pi_capable;
int cqs_used;
int refcount;
int cq_active_qps[ISERT_MAX_CQ];
struct ib_device *ib_device;
struct ib_cq *dev_rx_cq[ISERT_MAX_CQ];
struct ib_cq *dev_tx_cq[ISERT_MAX_CQ];
struct isert_cq_desc *cq_desc;
struct isert_comp *comps;
int comps_used;
struct list_head dev_node;
struct ib_device_attr dev_attr;
int (*reg_rdma_mem)(struct iscsi_conn *conn,
......@@ -182,6 +223,7 @@ struct isert_device {
};
struct isert_np {
struct iscsi_np *np;
struct semaphore np_sem;
struct rdma_cm_id *np_cm_id;
struct mutex np_accept_mutex;
......
drivers/target/iscsi/iscsi_target.c
View file @ ed55635e
......@@ -609,6 +609,7 @@ static int __init iscsi_target_init_module(void)
return ret;
r2t_out:
iscsit_unregister_transport(&iscsi_target_transport);
kmem_cache_destroy(lio_r2t_cache);
ooo_out:
kmem_cache_destroy(lio_ooo_cache);
......
drivers/target/iscsi/iscsi_target_core.h
View file @ ed55635e
......@@ -790,7 +790,6 @@ struct iscsi_np {
void *np_context;
struct iscsit_transport *np_transport;
struct list_head np_list;
struct iscsi_tpg_np *tpg_np;
} ____cacheline_aligned;
struct iscsi_tpg_np {
......
drivers/target/iscsi/iscsi_target_login.c
View file @ ed55635e
......@@ -281,7 +281,6 @@ static int iscsi_login_zero_tsih_s1(
{
struct iscsi_session *sess = NULL;
struct iscsi_login_req *pdu = (struct iscsi_login_req *)buf;
enum target_prot_op sup_pro_ops;
int ret;
sess = kzalloc(sizeof(struct iscsi_session), GFP_KERNEL);
......@@ -343,9 +342,8 @@ static int iscsi_login_zero_tsih_s1(
kfree(sess);
return -ENOMEM;
}
sup_pro_ops = conn->conn_transport->iscsit_get_sup_prot_ops(conn);
sess->se_sess = transport_init_session(sup_pro_ops);
sess->se_sess = transport_init_session(TARGET_PROT_NORMAL);
if (IS_ERR(sess->se_sess)) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
......@@ -1161,6 +1159,7 @@ void iscsi_target_login_sess_out(struct iscsi_conn *conn,
}
kfree(conn->sess->sess_ops);
kfree(conn->sess);
conn->sess = NULL;
old_sess_out:
iscsi_stop_login_thread_timer(np);
......@@ -1204,6 +1203,9 @@ void iscsi_target_login_sess_out(struct iscsi_conn *conn,
conn->sock = NULL;
}
if (conn->conn_transport->iscsit_wait_conn)
conn->conn_transport->iscsit_wait_conn(conn);
if (conn->conn_transport->iscsit_free_conn)
conn->conn_transport->iscsit_free_conn(conn);
......@@ -1364,6 +1366,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
}
login->zero_tsih = zero_tsih;
conn->sess->se_sess->sup_prot_ops =
conn->conn_transport->iscsit_get_sup_prot_ops(conn);
tpg = conn->tpg;
if (!tpg) {
pr_err("Unable to locate struct iscsi_conn->tpg\n");
......
drivers/target/iscsi/iscsi_target_tpg.c
View file @ ed55635e
......@@ -501,7 +501,6 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
init_completion(&tpg_np->tpg_np_comp);
kref_init(&tpg_np->tpg_np_kref);
tpg_np->tpg_np = np;
np->tpg_np = tpg_np;
tpg_np->tpg = tpg;
spin_lock(&tpg->tpg_np_lock);
......
drivers/target/iscsi/iscsi_target_transport.c
View file @ ed55635e
......@@ -26,7 +26,6 @@ struct iscsit_transport *iscsit_get_transport(int type)
void iscsit_put_transport(struct iscsit_transport *t)
{
if (t->owner)
module_put(t->owner);
}
......
drivers/target/iscsi/iscsi_target_util.c
View file @ ed55635e
......@@ -1356,15 +1356,15 @@ static int iscsit_do_tx_data(
struct iscsi_conn *conn,
struct iscsi_data_count *count)
{
int data = count->data_length, total_tx = 0, tx_loop = 0, iov_len;
int ret, iov_len;
struct kvec *iov_p;
struct msghdr msg;
if (!conn || !conn->sock || !conn->conn_ops)
return -1;
if (data <= 0) {
pr_err("Data length is: %d\n", data);
if (count->data_length <= 0) {
pr_err("Data length is: %d\n", count->data_length);
return -1;
}
......@@ -1373,20 +1373,16 @@ static int iscsit_do_tx_data(
iov_p = count->iov;
iov_len = count->iov_count;
while (total_tx < data) {
tx_loop = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len,
(data - total_tx));
if (tx_loop <= 0) {
pr_debug("tx_loop: %d total_tx %d\n",
tx_loop, total_tx);
return tx_loop;
}
total_tx += tx_loop;
pr_debug("tx_loop: %d, total_tx: %d, data: %d\n",
tx_loop, total_tx, data);
ret = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len,
count->data_length);
if (ret != count->data_length) {
pr_err("Unexpected ret: %d send data %d\n",
ret, count->data_length);
return -EPIPE;
}
pr_debug("ret: %d, sent data: %d\n", ret, count->data_length);
return total_tx;
return ret;
}
int rx_data(
......
drivers/target/loopback/tcm_loop.c
View file @ ed55635e
......@@ -138,7 +138,7 @@ static void tcm_loop_submission_work(struct work_struct *work)
set_host_byte(sc, DID_TRANSPORT_DISRUPTED);
goto out_done;
}
tl_nexus = tl_hba->tl_nexus;
tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus) {
scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus"
" does not exist\n");
......@@ -218,16 +218,26 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
* to struct scsi_device
*/
static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
struct tcm_loop_nexus *tl_nexus,
int lun, int task, enum tcm_tmreq_table tmr)
{
struct se_cmd *se_cmd = NULL;
struct se_session *se_sess;
struct se_portal_group *se_tpg;
struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_cmd *tl_cmd = NULL;
struct tcm_loop_tmr *tl_tmr = NULL;
int ret = TMR_FUNCTION_FAILED, rc;
/*
* Locate the tl_nexus and se_sess pointers
*/
tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus) {
pr_err("Unable to perform device reset without"
" active I_T Nexus\n");
return ret;
}
tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
if (!tl_cmd) {
pr_err("Unable to allocate memory for tl_cmd\n");
......@@ -243,7 +253,7 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
se_cmd = &tl_cmd->tl_se_cmd;
se_tpg = &tl_tpg->tl_se_tpg;
se_sess = tl_nexus->se_sess;
se_sess = tl_tpg->tl_nexus->se_sess;
/*
* Initialize struct se_cmd descriptor from target_core_mod infrastructure
*/
......@@ -288,7 +298,6 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
static int tcm_loop_abort_task(struct scsi_cmnd *sc)
{
struct tcm_loop_hba *tl_hba;
struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_tpg *tl_tpg;
int ret = FAILED;
......@@ -296,21 +305,8 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
* Locate the tcm_loop_hba_t pointer
*/
tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
/*
* Locate the tl_nexus and se_sess pointers
*/
tl_nexus = tl_hba->tl_nexus;
if (!tl_nexus) {
pr_err("Unable to perform device reset without"
" active I_T Nexus\n");
return FAILED;
}
/*
* Locate the tl_tpg pointer from TargetID in sc->device->id
*/
tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
sc->request->tag, TMR_ABORT_TASK);
return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
}
......@@ -322,7 +318,6 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
static int tcm_loop_device_reset(struct scsi_cmnd *sc)
{
struct tcm_loop_hba *tl_hba;
struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_tpg *tl_tpg;
int ret = FAILED;
......@@ -330,20 +325,9 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
* Locate the tcm_loop_hba_t pointer
*/
tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
/*
* Locate the tl_nexus and se_sess pointers
*/
tl_nexus = tl_hba->tl_nexus;
if (!tl_nexus) {
pr_err("Unable to perform device reset without"
" active I_T Nexus\n");
return FAILED;
}
/*
* Locate the tl_tpg pointer from TargetID in sc->device->id
*/
tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
0, TMR_LUN_RESET);
return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
}
......@@ -940,8 +924,8 @@ static int tcm_loop_make_nexus(
struct tcm_loop_nexus *tl_nexus;
int ret = -ENOMEM;
if (tl_tpg->tl_hba->tl_nexus) {
pr_debug("tl_tpg->tl_hba->tl_nexus already exists\n");
if (tl_tpg->tl_nexus) {
pr_debug("tl_tpg->tl_nexus already exists\n");
return -EEXIST;
}
se_tpg = &tl_tpg->tl_se_tpg;
......@@ -976,7 +960,7 @@ static int tcm_loop_make_nexus(
*/
__transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl,
tl_nexus->se_sess, tl_nexus);
tl_tpg->tl_hba->tl_nexus = tl_nexus;
tl_tpg->tl_nexus = tl_nexus;
pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
name);
......@@ -992,12 +976,8 @@ static int tcm_loop_drop_nexus(
{
struct se_session *se_sess;
struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_hba *tl_hba = tpg->tl_hba;
if (!tl_hba)
return -ENODEV;
tl_nexus = tl_hba->tl_nexus;
tl_nexus = tpg->tl_nexus;
if (!tl_nexus)
return -ENODEV;
......@@ -1013,13 +993,13 @@ static int tcm_loop_drop_nexus(
}
pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba),
tl_nexus->se_sess->se_node_acl->initiatorname);
/*
* Release the SCSI I_T Nexus to the emulated SAS Target Port
*/
transport_deregister_session(tl_nexus->se_sess);
tpg->tl_hba->tl_nexus = NULL;
tpg->tl_nexus = NULL;
kfree(tl_nexus);
return 0;
}
......@@ -1035,7 +1015,7 @@ static ssize_t tcm_loop_tpg_show_nexus(
struct tcm_loop_nexus *tl_nexus;
ssize_t ret;
tl_nexus = tl_tpg->tl_hba->tl_nexus;
tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus)
return -ENODEV;
......
drivers/target/loopback/tcm_loop.h
View file @ ed55635e
......@@ -27,11 +27,6 @@ struct tcm_loop_tmr {
};
struct tcm_loop_nexus {
int it_nexus_active;
/*
* Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
*/
struct scsi_host *sh;
/*
* Pointer to TCM session for I_T Nexus
*/
......@@ -51,6 +46,7 @@ struct tcm_loop_tpg {
atomic_t tl_tpg_port_count;
struct se_portal_group tl_se_tpg;
struct tcm_loop_hba *tl_hba;
struct tcm_loop_nexus *tl_nexus;
};
struct tcm_loop_hba {
......@@ -59,7 +55,6 @@ struct tcm_loop_hba {
struct se_hba_s *se_hba;
struct se_lun *tl_hba_lun;
struct se_port *tl_hba_lun_sep;
struct tcm_loop_nexus *tl_nexus;
struct device dev;
struct Scsi_Host *sh;
struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
......
drivers/target/target_core_configfs.c
View file @ ed55635e
......@@ -50,6 +50,19 @@
#include "target_core_rd.h"
#include "target_core_xcopy.h"
#define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \
{ \
struct target_backend_cits *tbc = &sa->tb_cits; \
struct config_item_type *cit = &tbc->tb_##_name##_cit; \
\
cit->ct_item_ops = _item_ops; \
cit->ct_group_ops = _group_ops; \
cit->ct_attrs = _attrs; \
cit->ct_owner = sa->owner; \
pr_debug("Setup generic %s\n", __stringify(_name)); \
}
extern struct t10_alua_lu_gp *default_lu_gp;
static LIST_HEAD(g_tf_list);
......@@ -126,6 +139,12 @@ static struct config_group *target_core_register_fabric(
pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
" %s\n", group, name);
tf = target_core_get_fabric(name);
if (!tf) {
pr_err("target_core_register_fabric() trying autoload for %s\n",
name);
/*
* Below are some hardcoded request_module() calls to automatically
* local fabric modules when the following is called:
......@@ -136,6 +155,7 @@ static struct config_group *target_core_register_fabric(
* registered, but simply provids auto loading logic for modules with
* mkdir(2) system calls with known TCM fabric modules.
*/
if (!strncmp(name, "iscsi", 5)) {
/*
* Automatically load the LIO Target fabric module when the
......@@ -165,6 +185,8 @@ static struct config_group *target_core_register_fabric(
}
tf = target_core_get_fabric(name);
}
if (!tf) {
pr_err("target_core_get_fabric() failed for %s\n",
name);
......@@ -562,198 +584,21 @@ EXPORT_SYMBOL(target_fabric_configfs_deregister);
// Stop functions called by external Target Fabrics Modules
//############################################################################*/
/* Start functions for struct config_item_type target_core_dev_attrib_cit */
#define DEF_DEV_ATTRIB_SHOW(_name) \
static ssize_t target_core_dev_show_attr_##_name( \
struct se_dev_attrib *da, \
char *page) \
{ \
return snprintf(page, PAGE_SIZE, "%u\n", \
(u32)da->da_dev->dev_attrib._name); \
}
#define DEF_DEV_ATTRIB_STORE(_name) \
static ssize_t target_core_dev_store_attr_##_name( \
struct se_dev_attrib *da, \
const char *page, \
size_t count) \
{ \
unsigned long val; \
int ret; \
\
ret = kstrtoul(page, 0, &val); \
if (ret < 0) { \
pr_err("kstrtoul() failed with" \
" ret: %d\n", ret); \
return -EINVAL; \
} \
ret = se_dev_set_##_name(da->da_dev, (u32)val); \
\
return (!ret) ? count : -EINVAL; \
}
#define DEF_DEV_ATTRIB(_name) \
DEF_DEV_ATTRIB_SHOW(_name); \
DEF_DEV_ATTRIB_STORE(_name);
#define DEF_DEV_ATTRIB_RO(_name) \
DEF_DEV_ATTRIB_SHOW(_name);
/* Start functions for struct config_item_type tb_dev_attrib_cit */
CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib);
#define SE_DEV_ATTR(_name, _mode) \
static struct target_core_dev_attrib_attribute \
target_core_dev_attrib_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
target_core_dev_show_attr_##_name, \
target_core_dev_store_attr_##_name);
#define SE_DEV_ATTR_RO(_name); \
static struct target_core_dev_attrib_attribute \
target_core_dev_attrib_##_name = \
__CONFIGFS_EATTR_RO(_name, \
target_core_dev_show_attr_##_name);
DEF_DEV_ATTRIB(emulate_model_alias);
SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_dpo);
SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_fua_write);
SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_fua_read);
SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_write_cache);
SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl);
SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_tas);
SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_tpu);
SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_tpws);
SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_caw);
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);
DEF_DEV_ATTRIB(is_nonrot);
SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(emulate_rest_reord);
SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(force_pr_aptpl);
SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB_RO(hw_block_size);
SE_DEV_ATTR_RO(hw_block_size);
DEF_DEV_ATTRIB(block_size);
SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB_RO(hw_max_sectors);
SE_DEV_ATTR_RO(hw_max_sectors);
DEF_DEV_ATTRIB(fabric_max_sectors);
SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(optimal_sectors);
SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB_RO(hw_queue_depth);
SE_DEV_ATTR_RO(hw_queue_depth);
DEF_DEV_ATTRIB(queue_depth);
SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(max_unmap_lba_count);
SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(max_unmap_block_desc_count);
SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(unmap_granularity);
SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(unmap_granularity_alignment);
SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR);
DEF_DEV_ATTRIB(max_write_same_len);
SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR);
CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group);
static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
&target_core_dev_attrib_emulate_model_alias.attr,
&target_core_dev_attrib_emulate_dpo.attr,
&target_core_dev_attrib_emulate_fua_write.attr,
&target_core_dev_attrib_emulate_fua_read.attr,
&target_core_dev_attrib_emulate_write_cache.attr,
&target_core_dev_attrib_emulate_ua_intlck_ctrl.attr,
&target_core_dev_attrib_emulate_tas.attr,
&target_core_dev_attrib_emulate_tpu.attr,
&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_force_pr_aptpl.attr,
&target_core_dev_attrib_is_nonrot.attr,
&target_core_dev_attrib_emulate_rest_reord.attr,
&target_core_dev_attrib_hw_block_size.attr,
&target_core_dev_attrib_block_size.attr,
&target_core_dev_attrib_hw_max_sectors.attr,
&target_core_dev_attrib_fabric_max_sectors.attr,
&target_core_dev_attrib_optimal_sectors.attr,
&target_core_dev_attrib_hw_queue_depth.attr,
&target_core_dev_attrib_queue_depth.attr,
&target_core_dev_attrib_max_unmap_lba_count.attr,
&target_core_dev_attrib_max_unmap_block_desc_count.attr,
&target_core_dev_attrib_unmap_granularity.attr,
&target_core_dev_attrib_unmap_granularity_alignment.attr,
&target_core_dev_attrib_max_write_same_len.attr,
NULL,
};
static struct configfs_item_operations target_core_dev_attrib_ops = {
.show_attribute = target_core_dev_attrib_attr_show,
.store_attribute = target_core_dev_attrib_attr_store,
};
static struct config_item_type target_core_dev_attrib_cit = {
.ct_item_ops = &target_core_dev_attrib_ops,
.ct_attrs = target_core_dev_attrib_attrs,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL);
/* End functions for struct config_item_type target_core_dev_attrib_cit */
/* End functions for struct config_item_type tb_dev_attrib_cit */
/* Start functions for struct config_item_type target_core_dev_wwn_cit */
/* Start functions for struct config_item_type tb_dev_wwn_cit */
CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn);
#define SE_DEV_WWN_ATTR(_name, _mode) \
......@@ -984,15 +829,11 @@ static struct configfs_item_operations target_core_dev_wwn_ops = {
.store_attribute = target_core_dev_wwn_attr_store,
};
static struct config_item_type target_core_dev_wwn_cit = {
.ct_item_ops = &target_core_dev_wwn_ops,
.ct_attrs = target_core_dev_wwn_attrs,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs);
/* End functions for struct config_item_type target_core_dev_wwn_cit */
/* End functions for struct config_item_type tb_dev_wwn_cit */
/* Start functions for struct config_item_type target_core_dev_pr_cit */
/* Start functions for struct config_item_type tb_dev_pr_cit */
CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device);
#define SE_DEV_PR_ATTR(_name, _mode) \
......@@ -1453,15 +1294,11 @@ static struct configfs_item_operations target_core_dev_pr_ops = {
.store_attribute = target_core_dev_pr_attr_store,
};
static struct config_item_type target_core_dev_pr_cit = {
.ct_item_ops = &target_core_dev_pr_ops,
.ct_attrs = target_core_dev_pr_attrs,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs);
/* End functions for struct config_item_type target_core_dev_pr_cit */
/* End functions for struct config_item_type tb_dev_pr_cit */
/* Start functions for struct config_item_type target_core_dev_cit */
/* Start functions for struct config_item_type tb_dev_cit */
static ssize_t target_core_show_dev_info(void *p, char *page)
{
......@@ -1925,7 +1762,7 @@ static struct target_core_configfs_attribute target_core_attr_dev_lba_map = {
.store = target_core_store_dev_lba_map,
};
static struct configfs_attribute *lio_core_dev_attrs[] = {
static struct configfs_attribute *target_core_dev_attrs[] = {
&target_core_attr_dev_info.attr,
&target_core_attr_dev_control.attr,
&target_core_attr_dev_alias.attr,
......@@ -1984,13 +1821,9 @@ static struct configfs_item_operations target_core_dev_item_ops = {
.store_attribute = target_core_dev_store,
};
static struct config_item_type target_core_dev_cit = {
.ct_item_ops = &target_core_dev_item_ops,
.ct_attrs = lio_core_dev_attrs,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs);
/* End functions for struct config_item_type target_core_dev_cit */
/* End functions for struct config_item_type tb_dev_cit */
/* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
......@@ -2670,7 +2503,7 @@ static struct config_item_type target_core_alua_tg_pt_gp_cit = {
/* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
/* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
/* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */
static struct config_group *target_core_alua_create_tg_pt_gp(
struct config_group *group,
......@@ -2721,12 +2554,9 @@ static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
.drop_item = &target_core_alua_drop_tg_pt_gp,
};
static struct config_item_type target_core_alua_tg_pt_gps_cit = {
.ct_group_ops = &target_core_alua_tg_pt_gps_group_ops,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL);
/* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
/* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */
/* Start functions for struct config_item_type target_core_alua_cit */
......@@ -2744,7 +2574,7 @@ static struct config_item_type target_core_alua_cit = {
/* End functions for struct config_item_type target_core_alua_cit */
/* Start functions for struct config_item_type target_core_stat_cit */
/* Start functions for struct config_item_type tb_dev_stat_cit */
static struct config_group *target_core_stat_mkdir(
struct config_group *group,
......@@ -2765,12 +2595,9 @@ static struct configfs_group_operations target_core_stat_group_ops = {
.drop_item = &target_core_stat_rmdir,
};
static struct config_item_type target_core_stat_cit = {
.ct_group_ops = &target_core_stat_group_ops,
.ct_owner = THIS_MODULE,
};
TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL);
/* End functions for struct config_item_type target_core_stat_cit */
/* End functions for struct config_item_type tb_dev_stat_cit */
/* Start functions for struct config_item_type target_core_hba_cit */
......@@ -2806,17 +2633,17 @@ static struct config_group *target_core_make_subdev(
if (!dev_cg->default_groups)
goto out_free_device;
config_group_init_type_name(dev_cg, name, &target_core_dev_cit);
config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit);
config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
&target_core_dev_attrib_cit);
&t->tb_cits.tb_dev_attrib_cit);
config_group_init_type_name(&dev->dev_pr_group, "pr",
&target_core_dev_pr_cit);
&t->tb_cits.tb_dev_pr_cit);
config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
&target_core_dev_wwn_cit);
&t->tb_cits.tb_dev_wwn_cit);
config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
"alua", &target_core_alua_tg_pt_gps_cit);
"alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit);
config_group_init_type_name(&dev->dev_stat_grps.stat_group,
"statistics", &target_core_stat_cit);
"statistics", &t->tb_cits.tb_dev_stat_cit);
dev_cg->default_groups[0] = &dev->dev_attrib.da_group;
dev_cg->default_groups[1] = &dev->dev_pr_group;
......@@ -3110,6 +2937,17 @@ static struct config_item_type target_core_cit = {
/* Stop functions for struct config_item_type target_core_hba_cit */
void target_core_setup_sub_cits(struct se_subsystem_api *sa)
{
target_core_setup_dev_cit(sa);
target_core_setup_dev_attrib_cit(sa);
target_core_setup_dev_pr_cit(sa);
target_core_setup_dev_wwn_cit(sa);
target_core_setup_dev_alua_tg_pt_gps_cit(sa);
target_core_setup_dev_stat_cit(sa);
}
EXPORT_SYMBOL(target_core_setup_sub_cits);
static int __init target_core_init_configfs(void)
{
struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
......
drivers/target/target_core_device.c
View file @ ed55635e
......@@ -659,6 +659,7 @@ int se_dev_set_max_unmap_lba_count(
dev, dev->dev_attrib.max_unmap_lba_count);
return 0;
}
EXPORT_SYMBOL(se_dev_set_max_unmap_lba_count);
int se_dev_set_max_unmap_block_desc_count(
struct se_device *dev,
......@@ -670,6 +671,7 @@ int se_dev_set_max_unmap_block_desc_count(
dev, dev->dev_attrib.max_unmap_block_desc_count);
return 0;
}
EXPORT_SYMBOL(se_dev_set_max_unmap_block_desc_count);
int se_dev_set_unmap_granularity(
struct se_device *dev,
......@@ -680,6 +682,7 @@ int se_dev_set_unmap_granularity(
dev, dev->dev_attrib.unmap_granularity);
return 0;
}
EXPORT_SYMBOL(se_dev_set_unmap_granularity);
int se_dev_set_unmap_granularity_alignment(
struct se_device *dev,
......@@ -690,6 +693,7 @@ int se_dev_set_unmap_granularity_alignment(
dev, dev->dev_attrib.unmap_granularity_alignment);
return 0;
}
EXPORT_SYMBOL(se_dev_set_unmap_granularity_alignment);
int se_dev_set_max_write_same_len(
struct se_device *dev,
......@@ -700,6 +704,7 @@ int se_dev_set_max_write_same_len(
dev, dev->dev_attrib.max_write_same_len);
return 0;
}
EXPORT_SYMBOL(se_dev_set_max_write_same_len);
static void dev_set_t10_wwn_model_alias(struct se_device *dev)
{
......@@ -738,6 +743,7 @@ int se_dev_set_emulate_model_alias(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_model_alias);
int se_dev_set_emulate_dpo(struct se_device *dev, int flag)
{
......@@ -753,6 +759,7 @@ int se_dev_set_emulate_dpo(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_dpo);
int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
{
......@@ -760,17 +767,12 @@ int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
pr_err("Illegal value %d\n", flag);
return -EINVAL;
}
if (flag &&
dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
pr_err("emulate_fua_write not supported for pSCSI\n");
return -EINVAL;
}
dev->dev_attrib.emulate_fua_write = flag;
pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
dev, dev->dev_attrib.emulate_fua_write);
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_fua_write);
int se_dev_set_emulate_fua_read(struct se_device *dev, int flag)
{
......@@ -786,6 +788,7 @@ int se_dev_set_emulate_fua_read(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_fua_read);
int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
{
......@@ -793,11 +796,6 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
pr_err("Illegal value %d\n", flag);
return -EINVAL;
}
if (flag &&
dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
pr_err("emulate_write_cache not supported for pSCSI\n");
return -EINVAL;
}
if (flag &&
dev->transport->get_write_cache) {
pr_err("emulate_write_cache not supported for this device\n");
......@@ -809,6 +807,7 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
dev, dev->dev_attrib.emulate_write_cache);
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_write_cache);
int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
{
......@@ -829,6 +828,7 @@ int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_ua_intlck_ctrl);
int se_dev_set_emulate_tas(struct se_device *dev, int flag)
{
......@@ -849,6 +849,7 @@ int se_dev_set_emulate_tas(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_tas);
int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
{
......@@ -870,6 +871,7 @@ int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
dev, flag);
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_tpu);
int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
{
......@@ -891,6 +893,7 @@ int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
dev, flag);
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_tpws);
int se_dev_set_emulate_caw(struct se_device *dev, int flag)
{
......@@ -904,6 +907,7 @@ int se_dev_set_emulate_caw(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_caw);
int se_dev_set_emulate_3pc(struct se_device *dev, int flag)
{
......@@ -917,6 +921,7 @@ int se_dev_set_emulate_3pc(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_3pc);
int se_dev_set_pi_prot_type(struct se_device *dev, int flag)
{
......@@ -970,6 +975,7 @@ int se_dev_set_pi_prot_type(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_pi_prot_type);
int se_dev_set_pi_prot_format(struct se_device *dev, int flag)
{
......@@ -1005,6 +1011,7 @@ int se_dev_set_pi_prot_format(struct se_device *dev, int flag)
return 0;
}
EXPORT_SYMBOL(se_dev_set_pi_prot_format);
int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
{
......@@ -1017,6 +1024,7 @@ int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
(dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled");
return 0;
}
EXPORT_SYMBOL(se_dev_set_enforce_pr_isids);
int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag)
{
......@@ -1034,6 +1042,7 @@ int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag)
pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", dev, flag);
return 0;
}
EXPORT_SYMBOL(se_dev_set_force_pr_aptpl);
int se_dev_set_is_nonrot(struct se_device *dev, int flag)
{
......@@ -1046,6 +1055,7 @@ int se_dev_set_is_nonrot(struct se_device *dev, int flag)
dev, flag);
return 0;
}
EXPORT_SYMBOL(se_dev_set_is_nonrot);
int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag)
{
......@@ -1058,6 +1068,7 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag)
pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag);
return 0;
}
EXPORT_SYMBOL(se_dev_set_emulate_rest_reord);
/*
* Note, this can only be called on unexported SE Device Object.
......@@ -1076,15 +1087,6 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
if (queue_depth > dev->dev_attrib.hw_queue_depth) {
pr_err("dev[%p]: Passed queue_depth: %u"
" exceeds TCM/SE_Device TCQ: %u\n",
dev, queue_depth,
dev->dev_attrib.hw_queue_depth);
return -EINVAL;
}
} else {
if (queue_depth > dev->dev_attrib.queue_depth) {
if (queue_depth > dev->dev_attrib.hw_queue_depth) {
pr_err("dev[%p]: Passed queue_depth:"
......@@ -1094,13 +1096,12 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
return -EINVAL;
}
}
}
dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth;
pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n",
dev, queue_depth);
return 0;
}
EXPORT_SYMBOL(se_dev_set_queue_depth);
int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
{
......@@ -1123,15 +1124,6 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
DA_STATUS_MAX_SECTORS_MIN);
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) {
pr_err("dev[%p]: Passed fabric_max_sectors: %u"
" greater than TCM/SE_Device max_sectors:"
" %u\n", dev, fabric_max_sectors,
dev->dev_attrib.hw_max_sectors);
return -EINVAL;
}
} else {
if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) {
pr_err("dev[%p]: Passed fabric_max_sectors: %u"
" greater than DA_STATUS_MAX_SECTORS_MAX:"
......@@ -1139,7 +1131,6 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
DA_STATUS_MAX_SECTORS_MAX);
return -EINVAL;
}
}
/*
* Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
*/
......@@ -1155,6 +1146,7 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
dev, fabric_max_sectors);
return 0;
}
EXPORT_SYMBOL(se_dev_set_fabric_max_sectors);
int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
{
......@@ -1164,11 +1156,6 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
dev, dev->export_count);
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
pr_err("dev[%p]: Passed optimal_sectors cannot be"
" changed for TCM/pSCSI\n", dev);
return -EINVAL;
}
if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) {
pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
" greater than fabric_max_sectors: %u\n", dev,
......@@ -1181,6 +1168,7 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
dev, optimal_sectors);
return 0;
}
EXPORT_SYMBOL(se_dev_set_optimal_sectors);
int se_dev_set_block_size(struct se_device *dev, u32 block_size)
{
......@@ -1201,13 +1189,6 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size)
return -EINVAL;
}
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
pr_err("dev[%p]: Not allowed to change block_size for"
" Physical Device, use for Linux/SCSI to change"
" block_size for underlying hardware\n", dev);
return -EINVAL;
}
dev->dev_attrib.block_size = block_size;
pr_debug("dev[%p]: SE Device block_size changed to %u\n",
dev, block_size);
......@@ -1218,6 +1199,7 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size)
return 0;
}
EXPORT_SYMBOL(se_dev_set_block_size);
struct se_lun *core_dev_add_lun(
struct se_portal_group *tpg,
......
drivers/target/target_core_file.c
View file @ ed55635e
......@@ -37,6 +37,7 @@
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_backend_configfs.h>
#include "target_core_file.h"
......@@ -934,6 +935,42 @@ fd_parse_cdb(struct se_cmd *cmd)
return sbc_parse_cdb(cmd, &fd_sbc_ops);
}
DEF_TB_DEFAULT_ATTRIBS(fileio);
static struct configfs_attribute *fileio_backend_dev_attrs[] = {
&fileio_dev_attrib_emulate_model_alias.attr,
&fileio_dev_attrib_emulate_dpo.attr,
&fileio_dev_attrib_emulate_fua_write.attr,
&fileio_dev_attrib_emulate_fua_read.attr,
&fileio_dev_attrib_emulate_write_cache.attr,
&fileio_dev_attrib_emulate_ua_intlck_ctrl.attr,
&fileio_dev_attrib_emulate_tas.attr,
&fileio_dev_attrib_emulate_tpu.attr,
&fileio_dev_attrib_emulate_tpws.attr,
&fileio_dev_attrib_emulate_caw.attr,
&fileio_dev_attrib_emulate_3pc.attr,
&fileio_dev_attrib_pi_prot_type.attr,
&fileio_dev_attrib_hw_pi_prot_type.attr,
&fileio_dev_attrib_pi_prot_format.attr,
&fileio_dev_attrib_enforce_pr_isids.attr,
&fileio_dev_attrib_is_nonrot.attr,
&fileio_dev_attrib_emulate_rest_reord.attr,
&fileio_dev_attrib_force_pr_aptpl.attr,
&fileio_dev_attrib_hw_block_size.attr,
&fileio_dev_attrib_block_size.attr,
&fileio_dev_attrib_hw_max_sectors.attr,
&fileio_dev_attrib_fabric_max_sectors.attr,
&fileio_dev_attrib_optimal_sectors.attr,
&fileio_dev_attrib_hw_queue_depth.attr,
&fileio_dev_attrib_queue_depth.attr,
&fileio_dev_attrib_max_unmap_lba_count.attr,
&fileio_dev_attrib_max_unmap_block_desc_count.attr,
&fileio_dev_attrib_unmap_granularity.attr,
&fileio_dev_attrib_unmap_granularity_alignment.attr,
&fileio_dev_attrib_max_write_same_len.attr,
NULL,
};
static struct se_subsystem_api fileio_template = {
.name = "fileio",
.inquiry_prod = "FILEIO",
......@@ -957,6 +994,11 @@ static struct se_subsystem_api fileio_template = {
static int __init fileio_module_init(void)
{
struct target_backend_cits *tbc = &fileio_template.tb_cits;
target_core_setup_sub_cits(&fileio_template);
tbc->tb_dev_attrib_cit.ct_attrs = fileio_backend_dev_attrs;
return transport_subsystem_register(&fileio_template);
}
......
drivers/target/target_core_hba.c
View file @ ed55635e
......@@ -36,6 +36,7 @@
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_fabric.h>
#include <target/target_core_configfs.h>
#include "target_core_internal.h"
......@@ -137,7 +138,6 @@ core_alloc_hba(const char *plugin_name, u32 plugin_dep_id, u32 hba_flags)
return hba;
out_module_put:
if (hba->transport->owner)
module_put(hba->transport->owner);
hba->transport = NULL;
out_free_hba:
......@@ -159,7 +159,6 @@ core_delete_hba(struct se_hba *hba)
pr_debug("CORE_HBA[%d] - Detached HBA from Generic Target"
" Core\n", hba->hba_id);
if (hba->transport->owner)
module_put(hba->transport->owner);
hba->transport = NULL;
......
drivers/target/target_core_iblock.c
View file @ ed55635e
......@@ -41,6 +41,7 @@
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_backend_configfs.h>
#include "target_core_iblock.h"
......@@ -858,6 +859,42 @@ static bool iblock_get_write_cache(struct se_device *dev)
return q->flush_flags & REQ_FLUSH;
}
DEF_TB_DEFAULT_ATTRIBS(iblock);
static struct configfs_attribute *iblock_backend_dev_attrs[] = {
&iblock_dev_attrib_emulate_model_alias.attr,
&iblock_dev_attrib_emulate_dpo.attr,
&iblock_dev_attrib_emulate_fua_write.attr,
&iblock_dev_attrib_emulate_fua_read.attr,
&iblock_dev_attrib_emulate_write_cache.attr,
&iblock_dev_attrib_emulate_ua_intlck_ctrl.attr,
&iblock_dev_attrib_emulate_tas.attr,
&iblock_dev_attrib_emulate_tpu.attr,
&iblock_dev_attrib_emulate_tpws.attr,
&iblock_dev_attrib_emulate_caw.attr,
&iblock_dev_attrib_emulate_3pc.attr,
&iblock_dev_attrib_pi_prot_type.attr,
&iblock_dev_attrib_hw_pi_prot_type.attr,
&iblock_dev_attrib_pi_prot_format.attr,
&iblock_dev_attrib_enforce_pr_isids.attr,
&iblock_dev_attrib_is_nonrot.attr,
&iblock_dev_attrib_emulate_rest_reord.attr,
&iblock_dev_attrib_force_pr_aptpl.attr,
&iblock_dev_attrib_hw_block_size.attr,
&iblock_dev_attrib_block_size.attr,
&iblock_dev_attrib_hw_max_sectors.attr,
&iblock_dev_attrib_fabric_max_sectors.attr,
&iblock_dev_attrib_optimal_sectors.attr,
&iblock_dev_attrib_hw_queue_depth.attr,
&iblock_dev_attrib_queue_depth.attr,
&iblock_dev_attrib_max_unmap_lba_count.attr,
&iblock_dev_attrib_max_unmap_block_desc_count.attr,
&iblock_dev_attrib_unmap_granularity.attr,
&iblock_dev_attrib_unmap_granularity_alignment.attr,
&iblock_dev_attrib_max_write_same_len.attr,
NULL,
};
static struct se_subsystem_api iblock_template = {
.name = "iblock",
.inquiry_prod = "IBLOCK",
......@@ -883,6 +920,11 @@ static struct se_subsystem_api iblock_template = {
static int __init iblock_module_init(void)
{
struct target_backend_cits *tbc = &iblock_template.tb_cits;
target_core_setup_sub_cits(&iblock_template);
tbc->tb_dev_attrib_cit.ct_attrs = iblock_backend_dev_attrs;
return transport_subsystem_register(&iblock_template);
}
......
drivers/target/target_core_internal.h
View file @ ed55635e
......@@ -18,34 +18,6 @@ int core_dev_export(struct se_device *, struct se_portal_group *,
struct se_lun *);
void core_dev_unexport(struct se_device *, struct se_portal_group *,
struct se_lun *);
int se_dev_set_task_timeout(struct se_device *, u32);
int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
int se_dev_set_unmap_granularity(struct se_device *, u32);
int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
int se_dev_set_max_write_same_len(struct se_device *, u32);
int se_dev_set_emulate_model_alias(struct se_device *, int);
int se_dev_set_emulate_dpo(struct se_device *, int);
int se_dev_set_emulate_fua_write(struct se_device *, int);
int se_dev_set_emulate_fua_read(struct se_device *, int);
int se_dev_set_emulate_write_cache(struct se_device *, int);
int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
int se_dev_set_emulate_tas(struct se_device *, int);
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_force_pr_aptpl(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);
int se_dev_set_queue_depth(struct se_device *, u32);
int se_dev_set_max_sectors(struct se_device *, u32);
int se_dev_set_fabric_max_sectors(struct se_device *, u32);
int se_dev_set_optimal_sectors(struct se_device *, u32);
int se_dev_set_block_size(struct se_device *, u32);
struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_device *, u32);
void core_dev_del_lun(struct se_portal_group *, struct se_lun *);
struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
......
drivers/target/target_core_pr.c
View file @ ed55635e
......@@ -76,7 +76,7 @@ enum preempt_type {
};
static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *,
struct t10_pr_registration *, int);
struct t10_pr_registration *, int, int);
static sense_reason_t
target_scsi2_reservation_check(struct se_cmd *cmd)
......@@ -1177,7 +1177,7 @@ static int core_scsi3_check_implicit_release(
* service action with the SERVICE ACTION RESERVATION KEY
* field set to zero (see 5.7.11.3).
*/
__core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0);
__core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0, 1);
ret = 1;
/*
* For 'All Registrants' reservation types, all existing
......@@ -1219,6 +1219,7 @@ static void __core_scsi3_free_registration(
pr_reg->pr_reg_deve->def_pr_registered = 0;
pr_reg->pr_reg_deve->pr_res_key = 0;
if (!list_empty(&pr_reg->pr_reg_list))
list_del(&pr_reg->pr_reg_list);
/*
* Caller accessing *pr_reg using core_scsi3_locate_pr_reg(),
......@@ -1271,6 +1272,7 @@ void core_scsi3_free_pr_reg_from_nacl(
{
struct t10_reservation *pr_tmpl = &dev->t10_pr;
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
bool free_reg = false;
/*
* If the passed se_node_acl matches the reservation holder,
* release the reservation.
......@@ -1278,13 +1280,18 @@ void core_scsi3_free_pr_reg_from_nacl(
spin_lock(&dev->dev_reservation_lock);
pr_res_holder = dev->dev_pr_res_holder;
if ((pr_res_holder != NULL) &&
(pr_res_holder->pr_reg_nacl == nacl))
__core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0);
(pr_res_holder->pr_reg_nacl == nacl)) {
__core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0, 1);
free_reg = true;
}
spin_unlock(&dev->dev_reservation_lock);
/*
* Release any registration associated with the struct se_node_acl.
*/
spin_lock(&pr_tmpl->registration_lock);
if (pr_res_holder && free_reg)
__core_scsi3_free_registration(dev, pr_res_holder, NULL, 0);
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
&pr_tmpl->registration_list, pr_reg_list) {
......@@ -1307,7 +1314,7 @@ void core_scsi3_free_all_registrations(
if (pr_res_holder != NULL) {
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
pr_res_holder, 0);
pr_res_holder, 0, 0);
}
spin_unlock(&dev->dev_reservation_lock);
......@@ -1429,14 +1436,12 @@ core_scsi3_decode_spec_i_port(
struct target_core_fabric_ops *tmp_tf_ops;
unsigned char *buf;
unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident;
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN];
sense_reason_t ret;
u32 tpdl, tid_len = 0;
int dest_local_nexus;
u32 dest_rtpi = 0;
memset(dest_iport, 0, 64);
local_se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
/*
* Allocate a struct pr_transport_id_holder and setup the
......@@ -2105,13 +2110,13 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key,
/*
* sa_res_key=0 Unregister Reservation Key for registered I_T Nexus.
*/
pr_holder = core_scsi3_check_implicit_release(
cmd->se_dev, pr_reg);
type = pr_reg->pr_res_type;
pr_holder = core_scsi3_check_implicit_release(cmd->se_dev,
pr_reg);
if (pr_holder < 0) {
ret = TCM_RESERVATION_CONFLICT;
goto out;
}
type = pr_reg->pr_res_type;
spin_lock(&pr_tmpl->registration_lock);
/*
......@@ -2269,6 +2274,7 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
spin_lock(&dev->dev_reservation_lock);
pr_res_holder = dev->dev_pr_res_holder;
if (pr_res_holder) {
int pr_res_type = pr_res_holder->pr_res_type;
/*
* From spc4r17 Section 5.7.9: Reserving:
*
......@@ -2279,7 +2285,9 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
* the logical unit, then the command shall be completed with
* RESERVATION CONFLICT status.
*/
if (pr_res_holder != pr_reg) {
if ((pr_res_holder != pr_reg) &&
(pr_res_type != PR_TYPE_WRITE_EXCLUSIVE_ALLREG) &&
(pr_res_type != PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
pr_err("SPC-3 PR: Attempted RESERVE from"
" [%s]: %s while reservation already held by"
......@@ -2385,23 +2393,59 @@ static void __core_scsi3_complete_pro_release(
struct se_device *dev,
struct se_node_acl *se_nacl,
struct t10_pr_registration *pr_reg,
int explicit)
int explicit,
int unreg)
{
struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo;
char i_buf[PR_REG_ISID_ID_LEN];
int pr_res_type = 0, pr_res_scope = 0;
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
/*
* Go ahead and release the current PR reservation holder.
*/
* If an All Registrants reservation is currently active and
* a unregister operation is requested, replace the current
* dev_pr_res_holder with another active registration.
*/
if (dev->dev_pr_res_holder) {
pr_res_type = dev->dev_pr_res_holder->pr_res_type;
pr_res_scope = dev->dev_pr_res_holder->pr_res_scope;
dev->dev_pr_res_holder->pr_res_type = 0;
dev->dev_pr_res_holder->pr_res_scope = 0;
dev->dev_pr_res_holder->pr_res_holder = 0;
dev->dev_pr_res_holder = NULL;
}
if (!unreg)
goto out;
spin_lock(&dev->t10_pr.registration_lock);
list_del_init(&pr_reg->pr_reg_list);
/*
* If the I_T nexus is a reservation holder, the persistent reservation
* is of an all registrants type, and the I_T nexus is the last remaining
* registered I_T nexus, then the device server shall also release the
* persistent reservation.
*/
if (!list_empty(&dev->t10_pr.registration_list) &&
((pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
(pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))) {
dev->dev_pr_res_holder =
list_entry(dev->t10_pr.registration_list.next,
struct t10_pr_registration, pr_reg_list);
dev->dev_pr_res_holder->pr_res_type = pr_res_type;
dev->dev_pr_res_holder->pr_res_scope = pr_res_scope;
dev->dev_pr_res_holder->pr_res_holder = 1;
}
spin_unlock(&dev->t10_pr.registration_lock);
out:
if (!dev->dev_pr_res_holder) {
pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared"
" reservation holder TYPE: %s ALL_TG_PT: %d\n",
tfo->get_fabric_name(), (explicit) ? "explicit" : "implicit",
core_scsi3_pr_dump_type(pr_reg->pr_res_type),
tfo->get_fabric_name(), (explicit) ? "explicit" :
"implicit", core_scsi3_pr_dump_type(pr_res_type),
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
}
pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n",
tfo->get_fabric_name(), se_nacl->initiatorname,
i_buf);
......@@ -2532,7 +2576,7 @@ core_scsi3_emulate_pro_release(struct se_cmd *cmd, int type, int scope,
* server shall not establish a unit attention condition.
*/
__core_scsi3_complete_pro_release(dev, se_sess->se_node_acl,
pr_reg, 1);
pr_reg, 1, 0);
spin_unlock(&dev->dev_reservation_lock);
......@@ -2620,7 +2664,7 @@ core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key)
if (pr_res_holder) {
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
pr_res_holder, 0);
pr_res_holder, 0, 0);
}
spin_unlock(&dev->dev_reservation_lock);
/*
......@@ -2679,7 +2723,7 @@ static void __core_scsi3_complete_pro_preempt(
*/
if (dev->dev_pr_res_holder)
__core_scsi3_complete_pro_release(dev, nacl,
dev->dev_pr_res_holder, 0);
dev->dev_pr_res_holder, 0, 0);
dev->dev_pr_res_holder = pr_reg;
pr_reg->pr_res_holder = 1;
......@@ -2925,7 +2969,7 @@ core_scsi3_pro_preempt(struct se_cmd *cmd, int type, int scope, u64 res_key,
if (pr_reg_n != pr_res_holder)
__core_scsi3_complete_pro_release(dev,
pr_res_holder->pr_reg_nacl,
dev->dev_pr_res_holder, 0);
dev->dev_pr_res_holder, 0, 0);
/*
* b) Remove the registrations for all I_T nexuses identified
* by the SERVICE ACTION RESERVATION KEY field, except the
......@@ -3059,7 +3103,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char *buf;
unsigned char *initiator_str;
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN];
u32 tid_len, tmp_tid_len;
int new_reg = 0, type, scope, matching_iname;
sense_reason_t ret;
......@@ -3071,7 +3115,6 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
memset(dest_iport, 0, 64);
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
se_tpg = se_sess->se_tpg;
tf_ops = se_tpg->se_tpg_tfo;
......@@ -3389,7 +3432,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
* holder (i.e., the I_T nexus on which the
*/
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
dev->dev_pr_res_holder, 0);
dev->dev_pr_res_holder, 0, 0);
/*
* g) Move the persistent reservation to the specified I_T nexus using
* the same scope and type as the persistent reservation released in
......@@ -3837,7 +3880,8 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd)
unsigned char *buf;
u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len;
u32 off = 8; /* off into first Full Status descriptor */
int format_code = 0;
int format_code = 0, pr_res_type = 0, pr_res_scope = 0;
bool all_reg = false;
if (cmd->data_length < 8) {
pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u"
......@@ -3854,6 +3898,19 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd)
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
buf[3] = (dev->t10_pr.pr_generation & 0xff);
spin_lock(&dev->dev_reservation_lock);
if (dev->dev_pr_res_holder) {
struct t10_pr_registration *pr_holder = dev->dev_pr_res_holder;
if (pr_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG ||
pr_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG) {
all_reg = true;
pr_res_type = pr_holder->pr_res_type;
pr_res_scope = pr_holder->pr_res_scope;
}
}
spin_unlock(&dev->dev_reservation_lock);
spin_lock(&pr_tmpl->registration_lock);
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
&pr_tmpl->registration_list, pr_reg_list) {
......@@ -3901,14 +3958,20 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd)
* reservation holder for PR_HOLDER bit.
*
* Also, if this registration is the reservation
* holder, fill in SCOPE and TYPE in the next byte.
* holder or there is an All Registrants reservation
* active, fill in SCOPE and TYPE in the next byte.
*/
if (pr_reg->pr_res_holder) {
buf[off++] |= 0x01;
buf[off++] = (pr_reg->pr_res_scope & 0xf0) |
(pr_reg->pr_res_type & 0x0f);
} else
} else if (all_reg) {
buf[off++] |= 0x01;
buf[off++] = (pr_res_scope & 0xf0) |
(pr_res_type & 0x0f);
} else {
off += 2;
}
off += 4; /* Skip over reserved area */
/*
......
drivers/target/target_core_pscsi.c
View file @ ed55635e
......@@ -44,6 +44,7 @@
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_backend_configfs.h>
#include "target_core_alua.h"
#include "target_core_pscsi.h"
......@@ -1165,6 +1166,26 @@ static void pscsi_req_done(struct request *req, int uptodate)
kfree(pt);
}
DEF_TB_DEV_ATTRIB_RO(pscsi, hw_pi_prot_type);
TB_DEV_ATTR_RO(pscsi, hw_pi_prot_type);
DEF_TB_DEV_ATTRIB_RO(pscsi, hw_block_size);
TB_DEV_ATTR_RO(pscsi, hw_block_size);
DEF_TB_DEV_ATTRIB_RO(pscsi, hw_max_sectors);
TB_DEV_ATTR_RO(pscsi, hw_max_sectors);
DEF_TB_DEV_ATTRIB_RO(pscsi, hw_queue_depth);
TB_DEV_ATTR_RO(pscsi, hw_queue_depth);
static struct configfs_attribute *pscsi_backend_dev_attrs[] = {
&pscsi_dev_attrib_hw_pi_prot_type.attr,
&pscsi_dev_attrib_hw_block_size.attr,
&pscsi_dev_attrib_hw_max_sectors.attr,
&pscsi_dev_attrib_hw_queue_depth.attr,
NULL,
};
static struct se_subsystem_api pscsi_template = {
.name = "pscsi",
.owner = THIS_MODULE,
......@@ -1185,6 +1206,11 @@ static struct se_subsystem_api pscsi_template = {
static int __init pscsi_module_init(void)
{
struct target_backend_cits *tbc = &pscsi_template.tb_cits;
target_core_setup_sub_cits(&pscsi_template);
tbc->tb_dev_attrib_cit.ct_attrs = pscsi_backend_dev_attrs;
return transport_subsystem_register(&pscsi_template);
}
......
drivers/target/target_core_rd.c
View file @ ed55635e
......@@ -34,6 +34,7 @@
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_backend_configfs.h>
#include "target_core_rd.h"
......@@ -632,6 +633,42 @@ rd_parse_cdb(struct se_cmd *cmd)
return sbc_parse_cdb(cmd, &rd_sbc_ops);
}
DEF_TB_DEFAULT_ATTRIBS(rd_mcp);
static struct configfs_attribute *rd_mcp_backend_dev_attrs[] = {
&rd_mcp_dev_attrib_emulate_model_alias.attr,
&rd_mcp_dev_attrib_emulate_dpo.attr,
&rd_mcp_dev_attrib_emulate_fua_write.attr,
&rd_mcp_dev_attrib_emulate_fua_read.attr,
&rd_mcp_dev_attrib_emulate_write_cache.attr,
&rd_mcp_dev_attrib_emulate_ua_intlck_ctrl.attr,
&rd_mcp_dev_attrib_emulate_tas.attr,
&rd_mcp_dev_attrib_emulate_tpu.attr,
&rd_mcp_dev_attrib_emulate_tpws.attr,
&rd_mcp_dev_attrib_emulate_caw.attr,
&rd_mcp_dev_attrib_emulate_3pc.attr,
&rd_mcp_dev_attrib_pi_prot_type.attr,
&rd_mcp_dev_attrib_hw_pi_prot_type.attr,
&rd_mcp_dev_attrib_pi_prot_format.attr,
&rd_mcp_dev_attrib_enforce_pr_isids.attr,
&rd_mcp_dev_attrib_is_nonrot.attr,
&rd_mcp_dev_attrib_emulate_rest_reord.attr,
&rd_mcp_dev_attrib_force_pr_aptpl.attr,
&rd_mcp_dev_attrib_hw_block_size.attr,
&rd_mcp_dev_attrib_block_size.attr,
&rd_mcp_dev_attrib_hw_max_sectors.attr,
&rd_mcp_dev_attrib_fabric_max_sectors.attr,
&rd_mcp_dev_attrib_optimal_sectors.attr,
&rd_mcp_dev_attrib_hw_queue_depth.attr,
&rd_mcp_dev_attrib_queue_depth.attr,
&rd_mcp_dev_attrib_max_unmap_lba_count.attr,
&rd_mcp_dev_attrib_max_unmap_block_desc_count.attr,
&rd_mcp_dev_attrib_unmap_granularity.attr,
&rd_mcp_dev_attrib_unmap_granularity_alignment.attr,
&rd_mcp_dev_attrib_max_write_same_len.attr,
NULL,
};
static struct se_subsystem_api rd_mcp_template = {
.name = "rd_mcp",
.inquiry_prod = "RAMDISK-MCP",
......@@ -653,8 +690,12 @@ static struct se_subsystem_api rd_mcp_template = {
int __init rd_module_init(void)
{
struct target_backend_cits *tbc = &rd_mcp_template.tb_cits;
int ret;
target_core_setup_sub_cits(&rd_mcp_template);
tbc->tb_dev_attrib_cit.ct_attrs = rd_mcp_backend_dev_attrs;
ret = transport_subsystem_register(&rd_mcp_template);
if (ret < 0) {
return ret;
......
drivers/target/target_core_user.c
View file @ ed55635e
......@@ -28,6 +28,8 @@
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
#include <target/target_core_backend.h>
#include <target/target_core_backend_configfs.h>
#include <linux/target_core_user.h>
/*
......@@ -1092,6 +1094,42 @@ tcmu_parse_cdb(struct se_cmd *cmd)
return ret;
}
DEF_TB_DEFAULT_ATTRIBS(tcmu);
static struct configfs_attribute *tcmu_backend_dev_attrs[] = {
&tcmu_dev_attrib_emulate_model_alias.attr,
&tcmu_dev_attrib_emulate_dpo.attr,
&tcmu_dev_attrib_emulate_fua_write.attr,
&tcmu_dev_attrib_emulate_fua_read.attr,
&tcmu_dev_attrib_emulate_write_cache.attr,
&tcmu_dev_attrib_emulate_ua_intlck_ctrl.attr,
&tcmu_dev_attrib_emulate_tas.attr,
&tcmu_dev_attrib_emulate_tpu.attr,
&tcmu_dev_attrib_emulate_tpws.attr,
&tcmu_dev_attrib_emulate_caw.attr,
&tcmu_dev_attrib_emulate_3pc.attr,
&tcmu_dev_attrib_pi_prot_type.attr,
&tcmu_dev_attrib_hw_pi_prot_type.attr,
&tcmu_dev_attrib_pi_prot_format.attr,
&tcmu_dev_attrib_enforce_pr_isids.attr,
&tcmu_dev_attrib_is_nonrot.attr,
&tcmu_dev_attrib_emulate_rest_reord.attr,
&tcmu_dev_attrib_force_pr_aptpl.attr,
&tcmu_dev_attrib_hw_block_size.attr,
&tcmu_dev_attrib_block_size.attr,
&tcmu_dev_attrib_hw_max_sectors.attr,
&tcmu_dev_attrib_fabric_max_sectors.attr,
&tcmu_dev_attrib_optimal_sectors.attr,
&tcmu_dev_attrib_hw_queue_depth.attr,
&tcmu_dev_attrib_queue_depth.attr,
&tcmu_dev_attrib_max_unmap_lba_count.attr,
&tcmu_dev_attrib_max_unmap_block_desc_count.attr,
&tcmu_dev_attrib_unmap_granularity.attr,
&tcmu_dev_attrib_unmap_granularity_alignment.attr,
&tcmu_dev_attrib_max_write_same_len.attr,
NULL,
};
static struct se_subsystem_api tcmu_template = {
.name = "user",
.inquiry_prod = "USER",
......@@ -1112,6 +1150,7 @@ static struct se_subsystem_api tcmu_template = {
static int __init tcmu_module_init(void)
{
struct target_backend_cits *tbc = &tcmu_template.tb_cits;
int ret;
BUILD_BUG_ON((sizeof(struct tcmu_cmd_entry) % TCMU_OP_ALIGN_SIZE) != 0);
......@@ -1134,6 +1173,9 @@ static int __init tcmu_module_init(void)
goto out_unreg_device;
}
target_core_setup_sub_cits(&tcmu_template);
tbc->tb_dev_attrib_cit.ct_attrs = tcmu_backend_dev_attrs;
ret = transport_subsystem_register(&tcmu_template);
if (ret)
goto out_unreg_genl;
......
include/target/target_core_backend.h
View file @ ed55635e
......@@ -5,6 +5,15 @@
#define TRANSPORT_PLUGIN_VHBA_PDEV 2
#define TRANSPORT_PLUGIN_VHBA_VDEV 3
struct target_backend_cits {
struct config_item_type tb_dev_cit;
struct config_item_type tb_dev_attrib_cit;
struct config_item_type tb_dev_pr_cit;
struct config_item_type tb_dev_wwn_cit;
struct config_item_type tb_dev_alua_tg_pt_gps_cit;
struct config_item_type tb_dev_stat_cit;
};
struct se_subsystem_api {
struct list_head sub_api_list;
......@@ -44,6 +53,8 @@ struct se_subsystem_api {
int (*init_prot)(struct se_device *);
int (*format_prot)(struct se_device *);
void (*free_prot)(struct se_device *);
struct target_backend_cits tb_cits;
};
struct sbc_ops {
......@@ -96,4 +107,36 @@ sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
void array_free(void *array, int n);
/* From target_core_configfs.c to setup default backend config_item_types */
void target_core_setup_sub_cits(struct se_subsystem_api *);
/* attribute helpers from target_core_device.c for backend drivers */
int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
int se_dev_set_unmap_granularity(struct se_device *, u32);
int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
int se_dev_set_max_write_same_len(struct se_device *, u32);
int se_dev_set_emulate_model_alias(struct se_device *, int);
int se_dev_set_emulate_dpo(struct se_device *, int);
int se_dev_set_emulate_fua_write(struct se_device *, int);
int se_dev_set_emulate_fua_read(struct se_device *, int);
int se_dev_set_emulate_write_cache(struct se_device *, int);
int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
int se_dev_set_emulate_tas(struct se_device *, int);
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_force_pr_aptpl(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);
int se_dev_set_queue_depth(struct se_device *, u32);
int se_dev_set_max_sectors(struct se_device *, u32);
int se_dev_set_fabric_max_sectors(struct se_device *, u32);
int se_dev_set_optimal_sectors(struct se_device *, u32);
int se_dev_set_block_size(struct se_device *, u32);
#endif /* TARGET_CORE_BACKEND_H */
include/target/target_core_backend_configfs.h 0 → 100644
View file @ ed55635e
#ifndef TARGET_CORE_BACKEND_CONFIGFS_H
#define TARGET_CORE_BACKEND_CONFIGFS_H
#include <target/configfs_macros.h>
#define DEF_TB_DEV_ATTRIB_SHOW(_backend, _name) \
static ssize_t _backend##_dev_show_attr_##_name( \
struct se_dev_attrib *da, \
char *page) \
{ \
return snprintf(page, PAGE_SIZE, "%u\n", \
(u32)da->da_dev->dev_attrib._name); \
}
#define DEF_TB_DEV_ATTRIB_STORE(_backend, _name) \
static ssize_t _backend##_dev_store_attr_##_name( \
struct se_dev_attrib *da, \
const char *page, \
size_t count) \
{ \
unsigned long val; \
int ret; \
\
ret = kstrtoul(page, 0, &val); \
if (ret < 0) { \
pr_err("kstrtoul() failed with ret: %d\n", ret); \
return -EINVAL; \
} \
ret = se_dev_set_##_name(da->da_dev, (u32)val); \
\
return (!ret) ? count : -EINVAL; \
}
#define DEF_TB_DEV_ATTRIB(_backend, _name) \
DEF_TB_DEV_ATTRIB_SHOW(_backend, _name); \
DEF_TB_DEV_ATTRIB_STORE(_backend, _name);
#define DEF_TB_DEV_ATTRIB_RO(_backend, name) \
DEF_TB_DEV_ATTRIB_SHOW(_backend, name);
CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib);
#define TB_DEV_ATTR(_backend, _name, _mode) \
static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_backend##_dev_show_attr_##_name, \
_backend##_dev_store_attr_##_name);
#define TB_DEV_ATTR_RO(_backend, _name) \
static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_backend##_dev_show_attr_##_name);
/*
* Default list of target backend device attributes as defined by
* struct se_dev_attrib
*/
#define DEF_TB_DEFAULT_ATTRIBS(_backend) \
DEF_TB_DEV_ATTRIB(_backend, emulate_model_alias); \
TB_DEV_ATTR(_backend, emulate_model_alias, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_dpo); \
TB_DEV_ATTR(_backend, emulate_dpo, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_fua_write); \
TB_DEV_ATTR(_backend, emulate_fua_write, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_fua_read); \
TB_DEV_ATTR(_backend, emulate_fua_read, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_write_cache); \
TB_DEV_ATTR(_backend, emulate_write_cache, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_ua_intlck_ctrl); \
TB_DEV_ATTR(_backend, emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_tas); \
TB_DEV_ATTR(_backend, emulate_tas, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_tpu); \
TB_DEV_ATTR(_backend, emulate_tpu, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_tpws); \
TB_DEV_ATTR(_backend, emulate_tpws, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_caw); \
TB_DEV_ATTR(_backend, emulate_caw, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_3pc); \
TB_DEV_ATTR(_backend, emulate_3pc, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, pi_prot_type); \
TB_DEV_ATTR(_backend, pi_prot_type, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB_RO(_backend, hw_pi_prot_type); \
TB_DEV_ATTR_RO(_backend, hw_pi_prot_type); \
DEF_TB_DEV_ATTRIB(_backend, pi_prot_format); \
TB_DEV_ATTR(_backend, pi_prot_format, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, enforce_pr_isids); \
TB_DEV_ATTR(_backend, enforce_pr_isids, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, is_nonrot); \
TB_DEV_ATTR(_backend, is_nonrot, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, emulate_rest_reord); \
TB_DEV_ATTR(_backend, emulate_rest_reord, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, force_pr_aptpl); \
TB_DEV_ATTR(_backend, force_pr_aptpl, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB_RO(_backend, hw_block_size); \
TB_DEV_ATTR_RO(_backend, hw_block_size); \
DEF_TB_DEV_ATTRIB(_backend, block_size); \
TB_DEV_ATTR(_backend, block_size, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB_RO(_backend, hw_max_sectors); \
TB_DEV_ATTR_RO(_backend, hw_max_sectors); \
DEF_TB_DEV_ATTRIB(_backend, fabric_max_sectors); \
TB_DEV_ATTR(_backend, fabric_max_sectors, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, optimal_sectors); \
TB_DEV_ATTR(_backend, optimal_sectors, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB_RO(_backend, hw_queue_depth); \
TB_DEV_ATTR_RO(_backend, hw_queue_depth); \
DEF_TB_DEV_ATTRIB(_backend, queue_depth); \
TB_DEV_ATTR(_backend, queue_depth, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, max_unmap_lba_count); \
TB_DEV_ATTR(_backend, max_unmap_lba_count, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, max_unmap_block_desc_count); \
TB_DEV_ATTR(_backend, max_unmap_block_desc_count, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, unmap_granularity); \
TB_DEV_ATTR(_backend, unmap_granularity, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, unmap_granularity_alignment); \
TB_DEV_ATTR(_backend, unmap_granularity_alignment, S_IRUGO | S_IWUSR); \
DEF_TB_DEV_ATTRIB(_backend, max_write_same_len); \
TB_DEV_ATTR(_backend, max_write_same_len, S_IRUGO | S_IWUSR);
#endif /* TARGET_CORE_BACKEND_CONFIGFS_H */
include/uapi/linux/target_core_user.h
View file @ ed55635e
......@@ -6,10 +6,6 @@
#include <linux/types.h>
#include <linux/uio.h>
#ifndef __packed
#define __packed __attribute__((packed))
#endif
#define TCMU_VERSION "1.0"
/*
......
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