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raspberrypi-kernel
提交 5716af6e 编写于 作者: S Sagi Grimberg 提交者： Roland Dreier
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IB/iser: Rename ib_conn -> iser_conn 

Two reasons why we choose to do this:

1. No point today calling struct iser_conn by another name ib_conn
2. In the next patches we will restructure iser control plane representation
   - struct iser_conn: connection logical representation
   - struct ib_conn: connection RDMA layout representation

This patch does not change any functionality.
Signed-off-by: NAriel Nahum <arieln@mellanox.com>
Signed-off-by: NSagi Grimberg <sagig@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>
上级 fe82dcec
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Showing with 403 addition and 392 deletion
drivers/infiniband/ulp/iser/iscsi_iser.c
浏览文件 @ 5716af6e
......@@ -147,8 +147,8 @@ static int iscsi_iser_pdu_alloc(struct iscsi_task *task, uint8_t opcode)
int iser_initialize_task_headers(struct iscsi_task *task,
struct iser_tx_desc *tx_desc)
{
struct iser_conn *ib_conn = task->conn->dd_data;
struct iser_device *device = ib_conn->device;
struct iser_conn *iser_conn = task->conn->dd_data;
struct iser_device *device = iser_conn->device;
struct iscsi_iser_task *iser_task = task->dd_data;
u64 dma_addr;
......@@ -162,7 +162,7 @@ int iser_initialize_task_headers(struct iscsi_task *task,
tx_desc->tx_sg[0].length = ISER_HEADERS_LEN;
tx_desc->tx_sg[0].lkey = device->mr->lkey;
iser_task->ib_conn = ib_conn;
iser_task->iser_conn = iser_conn;
return 0;
}
/**
......@@ -290,8 +290,8 @@ static void iscsi_iser_cleanup_task(struct iscsi_task *task)
{
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *tx_desc = &iser_task->desc;
struct iser_conn *ib_conn = task->conn->dd_data;
struct iser_device *device = ib_conn->device;
struct iser_conn *iser_conn = task->conn->dd_data;
struct iser_device *device = iser_conn->device;
ib_dma_unmap_single(device->ib_device,
tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
......@@ -344,7 +344,7 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
int is_leading)
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
struct iscsi_endpoint *ep;
int error;
......@@ -360,30 +360,30 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
(unsigned long long)transport_eph);
return -EINVAL;
}
ib_conn = ep->dd_data;
iser_conn = ep->dd_data;
mutex_lock(&ib_conn->state_mutex);
if (ib_conn->state != ISER_CONN_UP) {
mutex_lock(&iser_conn->state_mutex);
if (iser_conn->state != ISER_CONN_UP) {
error = -EINVAL;
iser_err("iser_conn %p state is %d, teardown started\n",
ib_conn, ib_conn->state);
iser_conn, iser_conn->state);
goto out;
}
error = iser_alloc_rx_descriptors(ib_conn, conn->session);
error = iser_alloc_rx_descriptors(iser_conn, conn->session);
if (error)
goto out;
/* binds the iSER connection retrieved from the previously
* connected ep_handle to the iSCSI layer connection. exchanges
* connection pointers */
iser_info("binding iscsi conn %p to ib_conn %p\n", conn, ib_conn);
iser_info("binding iscsi conn %p to iser_conn %p\n", conn, iser_conn);
conn->dd_data = ib_conn;
ib_conn->iscsi_conn = conn;
conn->dd_data = iser_conn;
iser_conn->iscsi_conn = conn;
out:
mutex_unlock(&ib_conn->state_mutex);
mutex_unlock(&iser_conn->state_mutex);
return error;
}
......@@ -391,11 +391,11 @@ static int
iscsi_iser_conn_start(struct iscsi_cls_conn *cls_conn)
{
struct iscsi_conn *iscsi_conn;
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
iscsi_conn = cls_conn->dd_data;
ib_conn = iscsi_conn->dd_data;
reinit_completion(&ib_conn->stop_completion);
iser_conn = iscsi_conn->dd_data;
reinit_completion(&iser_conn->stop_completion);
return iscsi_conn_start(cls_conn);
}
......@@ -404,18 +404,18 @@ static void
iscsi_iser_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iser_conn *ib_conn = conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
iser_dbg("stopping iscsi_conn: %p, ib_conn: %p\n", conn, ib_conn);
iser_dbg("stopping iscsi_conn: %p, iser_conn: %p\n", conn, iser_conn);
iscsi_conn_stop(cls_conn, flag);
/*
* Userspace may have goofed up and not bound the connection or
* might have only partially setup the connection.
*/
if (ib_conn) {
if (iser_conn) {
conn->dd_data = NULL;
complete(&ib_conn->stop_completion);
complete(&iser_conn->stop_completion);
}
}
......@@ -447,7 +447,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
struct Scsi_Host *shost;
struct iser_conn *ib_conn = NULL;
struct iser_conn *iser_conn = NULL;
shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 0);
if (!shost)
......@@ -464,9 +464,9 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
* the leading conn's ep so this will be NULL;
*/
if (ep) {
ib_conn = ep->dd_data;
if (ib_conn->pi_support) {
u32 sig_caps = ib_conn->device->dev_attr.sig_prot_cap;
iser_conn = ep->dd_data;
if (iser_conn->pi_support) {
u32 sig_caps = iser_conn->device->dev_attr.sig_prot_cap;
scsi_host_set_prot(shost, iser_dif_prot_caps(sig_caps));
if (iser_pi_guard)
......@@ -476,8 +476,8 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
}
}
if (iscsi_host_add(shost,
ep ? ib_conn->device->ib_device->dma_device : NULL))
if (iscsi_host_add(shost, ep ?
iser_conn->device->ib_device->dma_device : NULL))
goto free_host;
if (cmds_max > ISER_DEF_XMIT_CMDS_MAX) {
......@@ -577,17 +577,17 @@ iscsi_iser_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *s
static int iscsi_iser_get_ep_param(struct iscsi_endpoint *ep,
enum iscsi_param param, char *buf)
{
struct iser_conn *ib_conn = ep->dd_data;
struct iser_conn *iser_conn = ep->dd_data;
int len;
switch (param) {
case ISCSI_PARAM_CONN_PORT:
case ISCSI_PARAM_CONN_ADDRESS:
if (!ib_conn || !ib_conn->cma_id)
if (!iser_conn || !iser_conn->cma_id)
return -ENOTCONN;
return iscsi_conn_get_addr_param((struct sockaddr_storage *)
&ib_conn->cma_id->route.addr.dst_addr,
&iser_conn->cma_id->route.addr.dst_addr,
param, buf);
break;
default:
......@@ -602,24 +602,24 @@ iscsi_iser_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
int non_blocking)
{
int err;
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
struct iscsi_endpoint *ep;
ep = iscsi_create_endpoint(0);
if (!ep)
return ERR_PTR(-ENOMEM);
ib_conn = kzalloc(sizeof(*ib_conn), GFP_KERNEL);
if (!ib_conn) {
iser_conn = kzalloc(sizeof(*iser_conn), GFP_KERNEL);
if (!iser_conn) {
err = -ENOMEM;
goto failure;
}
ep->dd_data = ib_conn;
ib_conn->ep = ep;
iser_conn_init(ib_conn);
ep->dd_data = iser_conn;
iser_conn->ep = ep;
iser_conn_init(iser_conn);
err = iser_connect(ib_conn, NULL, dst_addr, non_blocking);
err = iser_connect(iser_conn, NULL, dst_addr, non_blocking);
if (err)
goto failure;
......@@ -632,22 +632,22 @@ iscsi_iser_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
static int
iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
{
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
int rc;
ib_conn = ep->dd_data;
rc = wait_for_completion_interruptible_timeout(&ib_conn->up_completion,
iser_conn = ep->dd_data;
rc = wait_for_completion_interruptible_timeout(&iser_conn->up_completion,
msecs_to_jiffies(timeout_ms));
/* if conn establishment failed, return error code to iscsi */
if (rc == 0) {
mutex_lock(&ib_conn->state_mutex);
if (ib_conn->state == ISER_CONN_TERMINATING ||
ib_conn->state == ISER_CONN_DOWN)
mutex_lock(&iser_conn->state_mutex);
if (iser_conn->state == ISER_CONN_TERMINATING ||
iser_conn->state == ISER_CONN_DOWN)
rc = -1;
mutex_unlock(&ib_conn->state_mutex);
mutex_unlock(&iser_conn->state_mutex);
}
iser_info("ib conn %p rc = %d\n", ib_conn, rc);
iser_info("ib conn %p rc = %d\n", iser_conn, rc);
if (rc > 0)
return 1; /* success, this is the equivalent of POLLOUT */
......@@ -660,12 +660,14 @@ iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
static void
iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
{
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
ib_conn = ep->dd_data;
iser_info("ep %p ib conn %p state %d\n", ep, ib_conn, ib_conn->state);
mutex_lock(&ib_conn->state_mutex);
iser_conn_terminate(ib_conn);
iser_conn = ep->dd_data;
iser_info("ep %p iser conn %p state %d\n",
ep, iser_conn, iser_conn->state);
mutex_lock(&iser_conn->state_mutex);
iser_conn_terminate(iser_conn);
/*
* if iser_conn and iscsi_conn are bound, we must wait for
......@@ -673,14 +675,14 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
* the iser resources. Otherwise we are safe to free resources
* immediately.
*/
if (ib_conn->iscsi_conn) {
INIT_WORK(&ib_conn->release_work, iser_release_work);
queue_work(release_wq, &ib_conn->release_work);
mutex_unlock(&ib_conn->state_mutex);
if (iser_conn->iscsi_conn) {
INIT_WORK(&iser_conn->release_work, iser_release_work);
queue_work(release_wq, &iser_conn->release_work);
mutex_unlock(&iser_conn->state_mutex);
} else {
ib_conn->state = ISER_CONN_DOWN;
mutex_unlock(&ib_conn->state_mutex);
iser_conn_release(ib_conn);
iser_conn->state = ISER_CONN_DOWN;
mutex_unlock(&iser_conn->state_mutex);
iser_conn_release(iser_conn);
}
iscsi_destroy_endpoint(ep);
}
......@@ -843,7 +845,7 @@ static int __init iser_init(void)
static void __exit iser_exit(void)
{
struct iser_conn *ib_conn, *n;
struct iser_conn *iser_conn, *n;
int connlist_empty;
iser_dbg("Removing iSER datamover...\n");
......@@ -856,8 +858,9 @@ static void __exit iser_exit(void)
if (!connlist_empty) {
iser_err("Error cleanup stage completed but we still have iser "
"connections, destroying them anyway.\n");
list_for_each_entry_safe(ib_conn, n, &ig.connlist, conn_list) {
iser_conn_release(ib_conn);
list_for_each_entry_safe(iser_conn, n, &ig.connlist,
conn_list) {
iser_conn_release(iser_conn);
}
}
......
drivers/infiniband/ulp/iser/iscsi_iser.h
浏览文件 @ 5716af6e
......@@ -179,7 +179,7 @@ struct iser_cm_hdr {
/* Length of an object name string */
#define ISER_OBJECT_NAME_SIZE 64
enum iser_ib_conn_state {
enum iser_conn_state {
ISER_CONN_INIT, /* descriptor allocd, no conn */
ISER_CONN_PENDING, /* in the process of being established */
ISER_CONN_UP, /* up and running */
......@@ -281,9 +281,9 @@ struct iser_device {
int cq_active_qps[ISER_MAX_CQ];
int cqs_used;
struct iser_cq_desc *cq_desc;
int (*iser_alloc_rdma_reg_res)(struct iser_conn *ib_conn,
int (*iser_alloc_rdma_reg_res)(struct iser_conn *iser_conn,
unsigned cmds_max);
void (*iser_free_rdma_reg_res)(struct iser_conn *ib_conn);
void (*iser_free_rdma_reg_res)(struct iser_conn *iser_conn);
int (*iser_reg_rdma_mem)(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir);
void (*iser_unreg_rdma_mem)(struct iscsi_iser_task *iser_task,
......@@ -320,7 +320,7 @@ struct fast_reg_descriptor {
struct iser_conn {
struct iscsi_conn *iscsi_conn;
struct iscsi_endpoint *ep;
enum iser_ib_conn_state state; /* rdma connection state */
enum iser_conn_state state; /* rdma connection state */
atomic_t refcount;
spinlock_t lock; /* used for state changes */
struct iser_device *device; /* device context */
......@@ -363,7 +363,7 @@ struct iser_conn {
struct iscsi_iser_task {
struct iser_tx_desc desc;
struct iser_conn *ib_conn;
struct iser_conn *iser_conn;
enum iser_task_status status;
struct scsi_cmnd *sc;
int command_sent; /* set if command sent */
......@@ -419,25 +419,26 @@ void iscsi_iser_recv(struct iscsi_conn *conn,
char *rx_data,
int rx_data_len);
void iser_conn_init(struct iser_conn *ib_conn);
void iser_conn_init(struct iser_conn *iser_conn);
void iser_conn_release(struct iser_conn *ib_conn);
void iser_conn_release(struct iser_conn *iser_conn);
void iser_conn_terminate(struct iser_conn *ib_conn);
void iser_conn_terminate(struct iser_conn *iser_conn);
void iser_release_work(struct work_struct *work);
void iser_rcv_completion(struct iser_rx_desc *desc,
unsigned long dto_xfer_len,
struct iser_conn *ib_conn);
struct iser_conn *iser_conn);
void iser_snd_completion(struct iser_tx_desc *desc, struct iser_conn *ib_conn);
void iser_snd_completion(struct iser_tx_desc *desc,
struct iser_conn *iser_conn);
void iser_task_rdma_init(struct iscsi_iser_task *task);
void iser_task_rdma_finalize(struct iscsi_iser_task *task);
void iser_free_rx_descriptors(struct iser_conn *ib_conn);
void iser_free_rx_descriptors(struct iser_conn *iser_conn);
void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
struct iser_data_buf *mem,
......@@ -449,12 +450,12 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *task,
int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *task,
enum iser_data_dir cmd_dir);
int iser_connect(struct iser_conn *ib_conn,
int iser_connect(struct iser_conn *iser_conn,
struct sockaddr *src_addr,
struct sockaddr *dst_addr,
int non_blocking);
int iser_reg_page_vec(struct iser_conn *ib_conn,
int iser_reg_page_vec(struct iser_conn *iser_conn,
struct iser_page_vec *page_vec,
struct iser_mem_reg *mem_reg);
......@@ -463,9 +464,9 @@ void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir);
int iser_post_recvl(struct iser_conn *ib_conn);
int iser_post_recvm(struct iser_conn *ib_conn, int count);
int iser_post_send(struct iser_conn *ib_conn, struct iser_tx_desc *tx_desc);
int iser_post_recvl(struct iser_conn *iser_conn);
int iser_post_recvm(struct iser_conn *iser_conn, int count);
int iser_post_send(struct iser_conn *iser_conn, struct iser_tx_desc *tx_desc);
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
......@@ -476,11 +477,12 @@ void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data);
int iser_initialize_task_headers(struct iscsi_task *task,
struct iser_tx_desc *tx_desc);
int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *session);
int iser_create_fmr_pool(struct iser_conn *ib_conn, unsigned cmds_max);
void iser_free_fmr_pool(struct iser_conn *ib_conn);
int iser_create_fastreg_pool(struct iser_conn *ib_conn, unsigned cmds_max);
void iser_free_fastreg_pool(struct iser_conn *ib_conn);
int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
struct iscsi_session *session);
int iser_create_fmr_pool(struct iser_conn *iser_conn, unsigned cmds_max);
void iser_free_fmr_pool(struct iser_conn *iser_conn);
int iser_create_fastreg_pool(struct iser_conn *iser_conn, unsigned cmds_max);
void iser_free_fastreg_pool(struct iser_conn *iser_conn);
u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir, sector_t *sector);
#endif
drivers/infiniband/ulp/iser/iser_initiator.c
浏览文件 @ 5716af6e
......@@ -49,7 +49,7 @@ static int iser_prepare_read_cmd(struct iscsi_task *task)
{
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_device *device = iser_task->ib_conn->device;
struct iser_device *device = iser_task->iser_conn->device;
struct iser_regd_buf *regd_buf;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
......@@ -103,7 +103,7 @@ iser_prepare_write_cmd(struct iscsi_task *task,
unsigned int edtl)
{
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_device *device = iser_task->ib_conn->device;
struct iser_device *device = iser_task->iser_conn->device;
struct iser_regd_buf *regd_buf;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
......@@ -160,10 +160,10 @@ iser_prepare_write_cmd(struct iscsi_task *task,
}
/* creates a new tx descriptor and adds header regd buffer */
static void iser_create_send_desc(struct iser_conn *ib_conn,
static void iser_create_send_desc(struct iser_conn *iser_conn,
struct iser_tx_desc *tx_desc)
{
struct iser_device *device = ib_conn->device;
struct iser_device *device = iser_conn->device;
ib_dma_sync_single_for_cpu(device->ib_device,
tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
......@@ -179,103 +179,106 @@ static void iser_create_send_desc(struct iser_conn *ib_conn,
}
}
static void iser_free_login_buf(struct iser_conn *ib_conn)
static void iser_free_login_buf(struct iser_conn *iser_conn)
{
if (!ib_conn->login_buf)
if (!iser_conn->login_buf)
return;
if (ib_conn->login_req_dma)
ib_dma_unmap_single(ib_conn->device->ib_device,
ib_conn->login_req_dma,
if (iser_conn->login_req_dma)
ib_dma_unmap_single(iser_conn->device->ib_device,
iser_conn->login_req_dma,
ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE);
if (ib_conn->login_resp_dma)
ib_dma_unmap_single(ib_conn->device->ib_device,
ib_conn->login_resp_dma,
if (iser_conn->login_resp_dma)
ib_dma_unmap_single(iser_conn->device->ib_device,
iser_conn->login_resp_dma,
ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE);
kfree(ib_conn->login_buf);
kfree(iser_conn->login_buf);
/* make sure we never redo any unmapping */
ib_conn->login_req_dma = 0;
ib_conn->login_resp_dma = 0;
ib_conn->login_buf = NULL;
iser_conn->login_req_dma = 0;
iser_conn->login_resp_dma = 0;
iser_conn->login_buf = NULL;
}
static int iser_alloc_login_buf(struct iser_conn *ib_conn)
static int iser_alloc_login_buf(struct iser_conn *iser_conn)
{
struct iser_device *device;
int req_err, resp_err;
BUG_ON(ib_conn->device == NULL);
BUG_ON(iser_conn->device == NULL);
device = ib_conn->device;
device = iser_conn->device;
ib_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
iser_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
ISER_RX_LOGIN_SIZE, GFP_KERNEL);
if (!ib_conn->login_buf)
if (!iser_conn->login_buf)
goto out_err;
ib_conn->login_req_buf = ib_conn->login_buf;
ib_conn->login_resp_buf = ib_conn->login_buf +
iser_conn->login_req_buf = iser_conn->login_buf;
iser_conn->login_resp_buf = iser_conn->login_buf +
ISCSI_DEF_MAX_RECV_SEG_LEN;
ib_conn->login_req_dma = ib_dma_map_single(ib_conn->device->ib_device,
(void *)ib_conn->login_req_buf,
ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE);
iser_conn->login_req_dma = ib_dma_map_single(device->ib_device,
iser_conn->login_req_buf,
ISCSI_DEF_MAX_RECV_SEG_LEN,
DMA_TO_DEVICE);
ib_conn->login_resp_dma = ib_dma_map_single(ib_conn->device->ib_device,
(void *)ib_conn->login_resp_buf,
ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE);
iser_conn->login_resp_dma = ib_dma_map_single(device->ib_device,
iser_conn->login_resp_buf,
ISER_RX_LOGIN_SIZE,
DMA_FROM_DEVICE);
req_err = ib_dma_mapping_error(device->ib_device,
ib_conn->login_req_dma);
iser_conn->login_req_dma);
resp_err = ib_dma_mapping_error(device->ib_device,
ib_conn->login_resp_dma);
iser_conn->login_resp_dma);
if (req_err || resp_err) {
if (req_err)
ib_conn->login_req_dma = 0;
iser_conn->login_req_dma = 0;
if (resp_err)
ib_conn->login_resp_dma = 0;
iser_conn->login_resp_dma = 0;
goto free_login_buf;
}
return 0;
free_login_buf:
iser_free_login_buf(ib_conn);
iser_free_login_buf(iser_conn);
out_err:
iser_err("unable to alloc or map login buf\n");
return -ENOMEM;
}
int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *session)
int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
struct iscsi_session *session)
{
int i, j;
u64 dma_addr;
struct iser_rx_desc *rx_desc;
struct ib_sge *rx_sg;
struct iser_device *device = ib_conn->device;
struct iser_device *device = iser_conn->device;
ib_conn->qp_max_recv_dtos = session->cmds_max;
ib_conn->qp_max_recv_dtos_mask = session->cmds_max - 1; /* cmds_max is 2^N */
ib_conn->min_posted_rx = ib_conn->qp_max_recv_dtos >> 2;
iser_conn->qp_max_recv_dtos = session->cmds_max;
iser_conn->qp_max_recv_dtos_mask = session->cmds_max - 1; /* cmds_max is 2^N */
iser_conn->min_posted_rx = iser_conn->qp_max_recv_dtos >> 2;
if (device->iser_alloc_rdma_reg_res(ib_conn, session->scsi_cmds_max))
if (device->iser_alloc_rdma_reg_res(iser_conn, session->scsi_cmds_max))
goto create_rdma_reg_res_failed;
if (iser_alloc_login_buf(ib_conn))
if (iser_alloc_login_buf(iser_conn))
goto alloc_login_buf_fail;
ib_conn->rx_descs = kmalloc(session->cmds_max *
iser_conn->rx_descs = kmalloc(session->cmds_max *
sizeof(struct iser_rx_desc), GFP_KERNEL);
if (!ib_conn->rx_descs)
if (!iser_conn->rx_descs)
goto rx_desc_alloc_fail;
rx_desc = ib_conn->rx_descs;
rx_desc = iser_conn->rx_descs;
for (i = 0; i < ib_conn->qp_max_recv_dtos; i++, rx_desc++) {
for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++) {
dma_addr = ib_dma_map_single(device->ib_device, (void *)rx_desc,
ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
if (ib_dma_mapping_error(device->ib_device, dma_addr))
......@@ -289,52 +292,52 @@ int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *s
rx_sg->lkey = device->mr->lkey;
}
ib_conn->rx_desc_head = 0;
iser_conn->rx_desc_head = 0;
return 0;
rx_desc_dma_map_failed:
rx_desc = ib_conn->rx_descs;
rx_desc = iser_conn->rx_descs;
for (j = 0; j < i; j++, rx_desc++)
ib_dma_unmap_single(device->ib_device, rx_desc->dma_addr,
ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
kfree(ib_conn->rx_descs);
ib_conn->rx_descs = NULL;
kfree(iser_conn->rx_descs);
iser_conn->rx_descs = NULL;
rx_desc_alloc_fail:
iser_free_login_buf(ib_conn);
iser_free_login_buf(iser_conn);
alloc_login_buf_fail:
device->iser_free_rdma_reg_res(ib_conn);
device->iser_free_rdma_reg_res(iser_conn);
create_rdma_reg_res_failed:
iser_err("failed allocating rx descriptors / data buffers\n");
return -ENOMEM;
}
void iser_free_rx_descriptors(struct iser_conn *ib_conn)
void iser_free_rx_descriptors(struct iser_conn *iser_conn)
{
int i;
struct iser_rx_desc *rx_desc;
struct iser_device *device = ib_conn->device;
struct iser_device *device = iser_conn->device;
if (!ib_conn->rx_descs)
if (!iser_conn->rx_descs)
goto free_login_buf;
if (device->iser_free_rdma_reg_res)
device->iser_free_rdma_reg_res(ib_conn);
device->iser_free_rdma_reg_res(iser_conn);
rx_desc = ib_conn->rx_descs;
for (i = 0; i < ib_conn->qp_max_recv_dtos; i++, rx_desc++)
rx_desc = iser_conn->rx_descs;
for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++)
ib_dma_unmap_single(device->ib_device, rx_desc->dma_addr,
ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
kfree(ib_conn->rx_descs);
kfree(iser_conn->rx_descs);
/* make sure we never redo any unmapping */
ib_conn->rx_descs = NULL;
iser_conn->rx_descs = NULL;
free_login_buf:
iser_free_login_buf(ib_conn);
iser_free_login_buf(iser_conn);
}
static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req)
{
struct iser_conn *ib_conn = conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_session *session = conn->session;
iser_dbg("req op %x flags %x\n", req->opcode, req->flags);
......@@ -347,18 +350,18 @@ static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req)
* response) and no posted send buffers left - they must have been
* consumed during previous login phases.
*/
WARN_ON(ib_conn->post_recv_buf_count != 1);
WARN_ON(atomic_read(&ib_conn->post_send_buf_count) != 0);
WARN_ON(iser_conn->post_recv_buf_count != 1);
WARN_ON(atomic_read(&iser_conn->post_send_buf_count) != 0);
if (session->discovery_sess) {
iser_info("Discovery session, re-using login RX buffer\n");
return 0;
} else
iser_info("Normal session, posting batch of RX %d buffers\n",
ib_conn->min_posted_rx);
iser_conn->min_posted_rx);
/* Initial post receive buffers */
if (iser_post_recvm(ib_conn, ib_conn->min_posted_rx))
if (iser_post_recvm(iser_conn, iser_conn->min_posted_rx))
return -ENOMEM;
return 0;
......@@ -370,7 +373,7 @@ static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req)
int iser_send_command(struct iscsi_conn *conn,
struct iscsi_task *task)
{
struct iser_conn *ib_conn = conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
unsigned long edtl;
int err;
......@@ -383,7 +386,7 @@ int iser_send_command(struct iscsi_conn *conn,
/* build the tx desc regd header and add it to the tx desc dto */
tx_desc->type = ISCSI_TX_SCSI_COMMAND;
iser_create_send_desc(ib_conn, tx_desc);
iser_create_send_desc(iser_conn, tx_desc);
if (hdr->flags & ISCSI_FLAG_CMD_READ) {
data_buf = &iser_task->data[ISER_DIR_IN];
......@@ -423,7 +426,7 @@ int iser_send_command(struct iscsi_conn *conn,
iser_task->status = ISER_TASK_STATUS_STARTED;
err = iser_post_send(ib_conn, tx_desc);
err = iser_post_send(iser_conn, tx_desc);
if (!err)
return 0;
......@@ -439,7 +442,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
struct iscsi_task *task,
struct iscsi_data *hdr)
{
struct iser_conn *ib_conn = conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *tx_desc = NULL;
struct iser_regd_buf *regd_buf;
......@@ -488,7 +491,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
itt, buf_offset, data_seg_len);
err = iser_post_send(ib_conn, tx_desc);
err = iser_post_send(iser_conn, tx_desc);
if (!err)
return 0;
......@@ -501,7 +504,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
int iser_send_control(struct iscsi_conn *conn,
struct iscsi_task *task)
{
struct iser_conn *ib_conn = conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *mdesc = &iser_task->desc;
unsigned long data_seg_len;
......@@ -510,9 +513,9 @@ int iser_send_control(struct iscsi_conn *conn,
/* build the tx desc regd header and add it to the tx desc dto */
mdesc->type = ISCSI_TX_CONTROL;
iser_create_send_desc(ib_conn, mdesc);
iser_create_send_desc(iser_conn, mdesc);
device = ib_conn->device;
device = iser_conn->device;
data_seg_len = ntoh24(task->hdr->dlength);
......@@ -524,16 +527,16 @@ int iser_send_control(struct iscsi_conn *conn,
}
ib_dma_sync_single_for_cpu(device->ib_device,
ib_conn->login_req_dma, task->data_count,
iser_conn->login_req_dma, task->data_count,
DMA_TO_DEVICE);
memcpy(ib_conn->login_req_buf, task->data, task->data_count);
memcpy(iser_conn->login_req_buf, task->data, task->data_count);
ib_dma_sync_single_for_device(device->ib_device,
ib_conn->login_req_dma, task->data_count,
iser_conn->login_req_dma, task->data_count,
DMA_TO_DEVICE);
tx_dsg->addr = ib_conn->login_req_dma;
tx_dsg->addr = iser_conn->login_req_dma;
tx_dsg->length = task->data_count;
tx_dsg->lkey = device->mr->lkey;
mdesc->num_sge = 2;
......@@ -542,7 +545,7 @@ int iser_send_control(struct iscsi_conn *conn,
if (task == conn->login_task) {
iser_dbg("op %x dsl %lx, posting login rx buffer\n",
task->hdr->opcode, data_seg_len);
err = iser_post_recvl(ib_conn);
err = iser_post_recvl(iser_conn);
if (err)
goto send_control_error;
err = iser_post_rx_bufs(conn, task->hdr);
......@@ -550,7 +553,7 @@ int iser_send_control(struct iscsi_conn *conn,
goto send_control_error;
}
err = iser_post_send(ib_conn, mdesc);
err = iser_post_send(iser_conn, mdesc);
if (!err)
return 0;
......@@ -564,59 +567,59 @@ int iser_send_control(struct iscsi_conn *conn,
*/
void iser_rcv_completion(struct iser_rx_desc *rx_desc,
unsigned long rx_xfer_len,
struct iser_conn *ib_conn)
struct iser_conn *iser_conn)
{
struct iscsi_hdr *hdr;
u64 rx_dma;
int rx_buflen, outstanding, count, err;
/* differentiate between login to all other PDUs */
if ((char *)rx_desc == ib_conn->login_resp_buf) {
rx_dma = ib_conn->login_resp_dma;
if ((char *)rx_desc == iser_conn->login_resp_buf) {
rx_dma = iser_conn->login_resp_dma;
rx_buflen = ISER_RX_LOGIN_SIZE;
} else {
rx_dma = rx_desc->dma_addr;
rx_buflen = ISER_RX_PAYLOAD_SIZE;
}
ib_dma_sync_single_for_cpu(ib_conn->device->ib_device, rx_dma,
rx_buflen, DMA_FROM_DEVICE);
ib_dma_sync_single_for_cpu(iser_conn->device->ib_device, rx_dma,
rx_buflen, DMA_FROM_DEVICE);
hdr = &rx_desc->iscsi_header;
iser_dbg("op 0x%x itt 0x%x dlen %d\n", hdr->opcode,
hdr->itt, (int)(rx_xfer_len - ISER_HEADERS_LEN));
iscsi_iser_recv(ib_conn->iscsi_conn, hdr, rx_desc->data,
iscsi_iser_recv(iser_conn->iscsi_conn, hdr, rx_desc->data,
rx_xfer_len - ISER_HEADERS_LEN);
ib_dma_sync_single_for_device(ib_conn->device->ib_device, rx_dma,
ib_dma_sync_single_for_device(iser_conn->device->ib_device, rx_dma,
rx_buflen, DMA_FROM_DEVICE);
/* decrementing conn->post_recv_buf_count only --after-- freeing the *
* task eliminates the need to worry on tasks which are completed in *
* parallel to the execution of iser_conn_term. So the code that waits *
* for the posted rx bufs refcount to become zero handles everything */
ib_conn->post_recv_buf_count--;
iser_conn->post_recv_buf_count--;
if (rx_dma == ib_conn->login_resp_dma)
if (rx_dma == iser_conn->login_resp_dma)
return;
outstanding = ib_conn->post_recv_buf_count;
if (outstanding + ib_conn->min_posted_rx <= ib_conn->qp_max_recv_dtos) {
count = min(ib_conn->qp_max_recv_dtos - outstanding,
ib_conn->min_posted_rx);
err = iser_post_recvm(ib_conn, count);
outstanding = iser_conn->post_recv_buf_count;
if (outstanding + iser_conn->min_posted_rx <= iser_conn->qp_max_recv_dtos) {
count = min(iser_conn->qp_max_recv_dtos - outstanding,
iser_conn->min_posted_rx);
err = iser_post_recvm(iser_conn, count);
if (err)
iser_err("posting %d rx bufs err %d\n", count, err);
}
}
void iser_snd_completion(struct iser_tx_desc *tx_desc,
struct iser_conn *ib_conn)
struct iser_conn *iser_conn)
{
struct iscsi_task *task;
struct iser_device *device = ib_conn->device;
struct iser_device *device = iser_conn->device;
if (tx_desc->type == ISCSI_TX_DATAOUT) {
ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr,
......@@ -625,7 +628,7 @@ void iser_snd_completion(struct iser_tx_desc *tx_desc,
tx_desc = NULL;
}
atomic_dec(&ib_conn->post_send_buf_count);
atomic_dec(&iser_conn->post_send_buf_count);
if (tx_desc && tx_desc->type == ISCSI_TX_CONTROL) {
/* this arithmetic is legal by libiscsi dd_data allocation */
......@@ -658,7 +661,7 @@ void iser_task_rdma_init(struct iscsi_iser_task *iser_task)
void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
struct iser_device *device = iser_task->ib_conn->device;
struct iser_device *device = iser_task->iser_conn->device;
int is_rdma_data_aligned = 1;
int is_rdma_prot_aligned = 1;
int prot_count = scsi_prot_sg_count(iser_task->sc);
......
drivers/infiniband/ulp/iser/iser_memory.c
浏览文件 @ 5716af6e
......@@ -49,7 +49,7 @@ static int iser_start_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data_copy,
enum iser_data_dir cmd_dir)
{
struct ib_device *dev = iser_task->ib_conn->device->ib_device;
struct ib_device *dev = iser_task->iser_conn->device->ib_device;
struct scatterlist *sgl = (struct scatterlist *)data->buf;
struct scatterlist *sg;
char *mem = NULL;
......@@ -116,7 +116,7 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
struct ib_device *dev;
unsigned long cmd_data_len;
dev = iser_task->ib_conn->device->ib_device;
dev = iser_task->iser_conn->device->ib_device;
ib_dma_unmap_sg(dev, &data_copy->sg_single, 1,
(cmd_dir == ISER_DIR_OUT) ?
......@@ -322,7 +322,7 @@ int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct ib_device *dev;
iser_task->dir[iser_dir] = 1;
dev = iser_task->ib_conn->device->ib_device;
dev = iser_task->iser_conn->device->ib_device;
data->dma_nents = ib_dma_map_sg(dev, data->buf, data->size, dma_dir);
if (data->dma_nents == 0) {
......@@ -337,7 +337,7 @@ void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task,
{
struct ib_device *dev;
dev = iser_task->ib_conn->device->ib_device;
dev = iser_task->iser_conn->device->ib_device;
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_FROM_DEVICE);
}
......@@ -348,7 +348,7 @@ static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir,
int aligned_len)
{
struct iscsi_conn *iscsi_conn = iser_task->ib_conn->iscsi_conn;
struct iscsi_conn *iscsi_conn = iser_task->iser_conn->iscsi_conn;
iscsi_conn->fmr_unalign_cnt++;
iser_warn("rdma alignment violation (%d/%d aligned) or FMR not supported\n",
......@@ -377,8 +377,8 @@ static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task,
int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct iser_conn *ib_conn = iser_task->ib_conn;
struct iser_device *device = ib_conn->device;
struct iser_conn *iser_conn = iser_task->iser_conn;
struct iser_device *device = iser_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf;
......@@ -418,8 +418,8 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
(unsigned long)regd_buf->reg.va,
(unsigned long)regd_buf->reg.len);
} else { /* use FMR for multiple dma entries */
iser_page_vec_build(mem, ib_conn->fmr.page_vec, ibdev);
err = iser_reg_page_vec(ib_conn, ib_conn->fmr.page_vec,
iser_page_vec_build(mem, iser_conn->fmr.page_vec, ibdev);
err = iser_reg_page_vec(iser_conn, iser_conn->fmr.page_vec,
&regd_buf->reg);
if (err && err != -EAGAIN) {
iser_data_buf_dump(mem, ibdev);
......@@ -427,12 +427,12 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
mem->dma_nents,
ntoh24(iser_task->desc.iscsi_header.dlength));
iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
ib_conn->fmr.page_vec->data_size,
ib_conn->fmr.page_vec->length,
ib_conn->fmr.page_vec->offset);
for (i = 0; i < ib_conn->fmr.page_vec->length; i++)
iser_conn->fmr.page_vec->data_size,
iser_conn->fmr.page_vec->length,
iser_conn->fmr.page_vec->offset);
for (i = 0; i < iser_conn->fmr.page_vec->length; i++)
iser_err("page_vec[%d] = 0x%llx\n", i,
(unsigned long long) ib_conn->fmr.page_vec->pages[i]);
(unsigned long long)iser_conn->fmr.page_vec->pages[i]);
}
if (err)
return err;
......@@ -533,7 +533,7 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
struct fast_reg_descriptor *desc, struct ib_sge *data_sge,
struct ib_sge *prot_sge, struct ib_sge *sig_sge)
{
struct iser_conn *ib_conn = iser_task->ib_conn;
struct iser_conn *iser_conn = iser_task->iser_conn;
struct iser_pi_context *pi_ctx = desc->pi_ctx;
struct ib_send_wr sig_wr, inv_wr;
struct ib_send_wr *bad_wr, *wr = NULL;
......@@ -579,7 +579,7 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
else
wr->next = &sig_wr;
ret = ib_post_send(ib_conn->qp, wr, &bad_wr);
ret = ib_post_send(iser_conn->qp, wr, &bad_wr);
if (ret) {
iser_err("reg_sig_mr failed, ret:%d\n", ret);
goto err;
......@@ -609,8 +609,8 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
struct ib_sge *sge)
{
struct fast_reg_descriptor *desc = regd_buf->reg.mem_h;
struct iser_conn *ib_conn = iser_task->ib_conn;
struct iser_device *device = ib_conn->device;
struct iser_conn *iser_conn = iser_task->iser_conn;
struct iser_device *device = iser_conn->device;
struct ib_device *ibdev = device->ib_device;
struct ib_mr *mr;
struct ib_fast_reg_page_list *frpl;
......@@ -677,7 +677,7 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
else
wr->next = &fastreg_wr;
ret = ib_post_send(ib_conn->qp, wr, &bad_wr);
ret = ib_post_send(iser_conn->qp, wr, &bad_wr);
if (ret) {
iser_err("fast registration failed, ret:%d\n", ret);
return ret;
......@@ -700,8 +700,8 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct iser_conn *ib_conn = iser_task->ib_conn;
struct iser_device *device = ib_conn->device;
struct iser_conn *iser_conn = iser_task->iser_conn;
struct iser_device *device = iser_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf = &iser_task->rdma_regd[cmd_dir];
......@@ -724,11 +724,11 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
if (mem->dma_nents != 1 ||
scsi_get_prot_op(iser_task->sc) != SCSI_PROT_NORMAL) {
spin_lock_irqsave(&ib_conn->lock, flags);
desc = list_first_entry(&ib_conn->fastreg.pool,
spin_lock_irqsave(&iser_conn->lock, flags);
desc = list_first_entry(&iser_conn->fastreg.pool,
struct fast_reg_descriptor, list);
list_del(&desc->list);
spin_unlock_irqrestore(&ib_conn->lock, flags);
spin_unlock_irqrestore(&iser_conn->lock, flags);
regd_buf->reg.mem_h = desc;
}
......@@ -791,9 +791,9 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
return 0;
err_reg:
if (desc) {
spin_lock_irqsave(&ib_conn->lock, flags);
list_add_tail(&desc->list, &ib_conn->fastreg.pool);
spin_unlock_irqrestore(&ib_conn->lock, flags);
spin_lock_irqsave(&iser_conn->lock, flags);
list_add_tail(&desc->list, &iser_conn->fastreg.pool);
spin_unlock_irqrestore(&iser_conn->lock, flags);
}
return err;
......
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