#include <linux/blkdev.h>
#include "rnbd-srv.h"
-#include "rnbd-srv-dev.h"
+#include "rnbd-srv-trace.h"
MODULE_DESCRIPTION("RDMA Network Block Device Server");
MODULE_LICENSE("GPL");
kref_put(&sess_dev->kref, rnbd_sess_dev_release);
}
-void rnbd_endio(void *priv, int error)
-{
- struct rnbd_io_private *rnbd_priv = priv;
- struct rnbd_srv_sess_dev *sess_dev = rnbd_priv->sess_dev;
-
- rnbd_put_sess_dev(sess_dev);
-
- rtrs_srv_resp_rdma(rnbd_priv->id, error);
-
- kfree(priv);
-}
-
static struct rnbd_srv_sess_dev *
rnbd_get_sess_dev(int dev_id, struct rnbd_srv_session *srv_sess)
{
static void rnbd_dev_bi_end_io(struct bio *bio)
{
- rnbd_endio(bio->bi_private, blk_status_to_errno(bio->bi_status));
+ struct rnbd_io_private *rnbd_priv = bio->bi_private;
+ struct rnbd_srv_sess_dev *sess_dev = rnbd_priv->sess_dev;
+
+ rnbd_put_sess_dev(sess_dev);
+ rtrs_srv_resp_rdma(rnbd_priv->id, blk_status_to_errno(bio->bi_status));
+
+ kfree(rnbd_priv);
bio_put(bio);
}
struct bio *bio;
short prio;
+ trace_process_rdma(srv_sess, msg, id, datalen, usrlen);
+
priv = kmalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->sess_dev = sess_dev;
priv->id = id;
- bio = bio_alloc(sess_dev->rnbd_dev->bdev, 1,
+ bio = bio_alloc(sess_dev->bdev, 1,
rnbd_to_bio_flags(le32_to_cpu(msg->rw)), GFP_KERNEL);
if (bio_add_page(bio, virt_to_page(data), datalen,
offset_in_page(data)) != datalen) {
rnbd_put_sess_dev(sess_dev);
wait_for_completion(&dc); /* wait for inflights to drop to zero */
- rnbd_dev_close(sess_dev->rnbd_dev);
+ blkdev_put(sess_dev->bdev, sess_dev->open_flags);
mutex_lock(&sess_dev->dev->lock);
list_del(&sess_dev->dev_list);
if (sess_dev->open_flags & FMODE_WRITE)
if (xa_empty(&srv_sess->index_idr))
goto out;
+ trace_destroy_sess(srv_sess);
+
mutex_lock(&srv_sess->lock);
xa_for_each(&srv_sess->index_idr, index, sess_dev)
rnbd_srv_destroy_dev_session_sysfs(sess_dev);
rtrs_srv_set_sess_priv(rtrs, srv_sess);
+ trace_create_sess(srv_sess);
+
return 0;
}
mutex_unlock(&sess->lock);
}
-static int process_msg_close(struct rnbd_srv_session *srv_sess,
+static void process_msg_close(struct rnbd_srv_session *srv_sess,
void *data, size_t datalen, const void *usr,
size_t usrlen)
{
const struct rnbd_msg_close *close_msg = usr;
struct rnbd_srv_sess_dev *sess_dev;
+ trace_process_msg_close(srv_sess, close_msg);
+
sess_dev = rnbd_get_sess_dev(le32_to_cpu(close_msg->device_id),
srv_sess);
if (IS_ERR(sess_dev))
- return 0;
+ return;
rnbd_put_sess_dev(sess_dev);
mutex_lock(&srv_sess->lock);
rnbd_srv_destroy_dev_session_sysfs(sess_dev);
mutex_unlock(&srv_sess->lock);
- return 0;
}
static int process_msg_open(struct rnbd_srv_session *srv_sess,
case RNBD_MSG_IO:
return process_rdma(srv_sess, id, data, datalen, usr, usrlen);
case RNBD_MSG_CLOSE:
- ret = process_msg_close(srv_sess, data, datalen, usr, usrlen);
+ process_msg_close(srv_sess, data, datalen, usr, usrlen);
break;
case RNBD_MSG_OPEN:
ret = process_msg_open(srv_sess, usr, usrlen, data, datalen);
return -EINVAL;
}
+ /*
+ * Since ret is passed to rtrs to handle the failure case, we
+ * just return 0 at the end otherwise callers in rtrs would call
+ * send_io_resp_imm again to print redundant err message.
+ */
rtrs_srv_resp_rdma(id, ret);
return 0;
}
}
static struct rnbd_srv_dev *
-rnbd_srv_get_or_create_srv_dev(struct rnbd_dev *rnbd_dev,
+rnbd_srv_get_or_create_srv_dev(struct block_device *bdev,
struct rnbd_srv_session *srv_sess,
enum rnbd_access_mode access_mode)
{
int ret;
struct rnbd_srv_dev *new_dev, *dev;
- new_dev = rnbd_srv_init_srv_dev(rnbd_dev->bdev);
+ new_dev = rnbd_srv_init_srv_dev(bdev);
if (IS_ERR(new_dev))
return new_dev;
static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
struct rnbd_srv_sess_dev *sess_dev)
{
- struct rnbd_dev *rnbd_dev = sess_dev->rnbd_dev;
+ struct block_device *bdev = sess_dev->bdev;
rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP);
- rsp->device_id =
- cpu_to_le32(sess_dev->device_id);
- rsp->nsectors =
- cpu_to_le64(get_capacity(rnbd_dev->bdev->bd_disk));
- rsp->logical_block_size =
- cpu_to_le16(bdev_logical_block_size(rnbd_dev->bdev));
- rsp->physical_block_size =
- cpu_to_le16(bdev_physical_block_size(rnbd_dev->bdev));
- rsp->max_segments =
- cpu_to_le16(rnbd_dev_get_max_segs(rnbd_dev));
+ rsp->device_id = cpu_to_le32(sess_dev->device_id);
+ rsp->nsectors = cpu_to_le64(bdev_nr_sectors(bdev));
+ rsp->logical_block_size = cpu_to_le16(bdev_logical_block_size(bdev));
+ rsp->physical_block_size = cpu_to_le16(bdev_physical_block_size(bdev));
+ rsp->max_segments = cpu_to_le16(bdev_max_segments(bdev));
rsp->max_hw_sectors =
- cpu_to_le32(rnbd_dev_get_max_hw_sects(rnbd_dev));
+ cpu_to_le32(queue_max_hw_sectors(bdev_get_queue(bdev)));
rsp->max_write_same_sectors = 0;
- rsp->max_discard_sectors =
- cpu_to_le32(rnbd_dev_get_max_discard_sects(rnbd_dev));
- rsp->discard_granularity =
- cpu_to_le32(rnbd_dev_get_discard_granularity(rnbd_dev));
- rsp->discard_alignment =
- cpu_to_le32(rnbd_dev_get_discard_alignment(rnbd_dev));
- rsp->secure_discard =
- cpu_to_le16(rnbd_dev_get_secure_discard(rnbd_dev));
+ rsp->max_discard_sectors = cpu_to_le32(bdev_max_discard_sectors(bdev));
+ rsp->discard_granularity = cpu_to_le32(bdev_discard_granularity(bdev));
+ rsp->discard_alignment = cpu_to_le32(bdev_discard_alignment(bdev));
+ rsp->secure_discard = cpu_to_le16(bdev_max_secure_erase_sectors(bdev));
rsp->cache_policy = 0;
- if (bdev_write_cache(rnbd_dev->bdev))
+ if (bdev_write_cache(bdev))
rsp->cache_policy |= RNBD_WRITEBACK;
- if (bdev_fua(rnbd_dev->bdev))
+ if (bdev_fua(bdev))
rsp->cache_policy |= RNBD_FUA;
}
static struct rnbd_srv_sess_dev *
rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess,
const struct rnbd_msg_open *open_msg,
- struct rnbd_dev *rnbd_dev, fmode_t open_flags,
+ struct block_device *bdev, fmode_t open_flags,
struct rnbd_srv_dev *srv_dev)
{
struct rnbd_srv_sess_dev *sdev = rnbd_sess_dev_alloc(srv_sess);
strscpy(sdev->pathname, open_msg->dev_name, sizeof(sdev->pathname));
- sdev->rnbd_dev = rnbd_dev;
+ sdev->bdev = bdev;
sdev->sess = srv_sess;
sdev->dev = srv_dev;
sdev->open_flags = open_flags;
struct rnbd_msg_sess_info_rsp *rsp = data;
srv_sess->ver = min_t(u8, sess_info_msg->ver, RNBD_PROTO_VER_MAJOR);
- pr_debug("Session %s using protocol version %d (client version: %d, server version: %d)\n",
- srv_sess->sessname, srv_sess->ver,
- sess_info_msg->ver, RNBD_PROTO_VER_MAJOR);
+
+ trace_process_msg_sess_info(srv_sess, sess_info_msg);
rsp->hdr.type = cpu_to_le16(RNBD_MSG_SESS_INFO_RSP);
rsp->ver = srv_sess->ver;
struct rnbd_srv_dev *srv_dev;
struct rnbd_srv_sess_dev *srv_sess_dev;
const struct rnbd_msg_open *open_msg = msg;
+ struct block_device *bdev;
fmode_t open_flags;
char *full_path;
- struct rnbd_dev *rnbd_dev;
struct rnbd_msg_open_rsp *rsp = data;
- pr_debug("Open message received: session='%s' path='%s' access_mode=%d\n",
- srv_sess->sessname, open_msg->dev_name,
- open_msg->access_mode);
+ trace_process_msg_open(srv_sess, open_msg);
+
open_flags = FMODE_READ;
if (open_msg->access_mode != RNBD_ACCESS_RO)
open_flags |= FMODE_WRITE;
goto reject;
}
- rnbd_dev = rnbd_dev_open(full_path, open_flags);
- if (IS_ERR(rnbd_dev)) {
- pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %ld\n",
- full_path, srv_sess->sessname, PTR_ERR(rnbd_dev));
- ret = PTR_ERR(rnbd_dev);
+ bdev = blkdev_get_by_path(full_path, open_flags, THIS_MODULE);
+ if (IS_ERR(bdev)) {
+ ret = PTR_ERR(bdev);
+ pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %d\n",
+ full_path, srv_sess->sessname, ret);
goto free_path;
}
- srv_dev = rnbd_srv_get_or_create_srv_dev(rnbd_dev, srv_sess,
+ srv_dev = rnbd_srv_get_or_create_srv_dev(bdev, srv_sess,
open_msg->access_mode);
if (IS_ERR(srv_dev)) {
pr_err("Opening device '%s' on session %s failed, creating srv_dev failed, err: %ld\n",
full_path, srv_sess->sessname, PTR_ERR(srv_dev));
ret = PTR_ERR(srv_dev);
- goto rnbd_dev_close;
+ goto blkdev_put;
}
srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg,
- rnbd_dev, open_flags,
+ bdev, open_flags,
srv_dev);
if (IS_ERR(srv_sess_dev)) {
pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %ld\n",
*/
mutex_lock(&srv_dev->lock);
if (!srv_dev->dev_kobj.state_in_sysfs) {
- ret = rnbd_srv_create_dev_sysfs(srv_dev, rnbd_dev->bdev);
+ ret = rnbd_srv_create_dev_sysfs(srv_dev, bdev);
if (ret) {
mutex_unlock(&srv_dev->lock);
rnbd_srv_err(srv_sess_dev,
mutex_unlock(&srv_dev->lock);
}
rnbd_put_srv_dev(srv_dev);
-rnbd_dev_close:
- rnbd_dev_close(rnbd_dev);
+blkdev_put:
+ blkdev_put(bdev, open_flags);
free_path:
kfree(full_path);
reject:
projects / platform / kernel / linux-starfive.git / blobdiff