Commit 53ded495 authored by Alex Elder's avatar Alex Elder Committed by Sage Weil

libceph: define mds_alloc_msg() method

The only user of the ceph messenger that doesn't define an alloc_msg
method is the mds client.  Define one, such that it works just like
it did before, and simplify ceph_con_in_msg_alloc() by assuming the
alloc_msg method is always present.

This and the next patch resolve:
    http://tracker.ceph.com/issues/4322Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarGreg Farnum <greg@inktank.com>
parent 1d866d1c
......@@ -3473,6 +3473,28 @@ static int invalidate_authorizer(struct ceph_connection *con)
return ceph_monc_validate_auth(&mdsc->fsc->client->monc);
}
static struct ceph_msg *mds_alloc_msg(struct ceph_connection *con,
struct ceph_msg_header *hdr, int *skip)
{
struct ceph_msg *msg;
int type = (int) le16_to_cpu(hdr->type);
int front_len = (int) le32_to_cpu(hdr->front_len);
if (con->in_msg)
return con->in_msg;
*skip = 0;
msg = ceph_msg_new(type, front_len, GFP_NOFS, false);
if (!msg) {
pr_err("unable to allocate msg type %d len %d\n",
type, front_len);
return NULL;
}
msg->page_alignment = (unsigned int) le16_to_cpu(hdr->data_off);
return msg;
}
static const struct ceph_connection_operations mds_con_ops = {
.get = con_get,
.put = con_put,
......@@ -3481,6 +3503,7 @@ static const struct ceph_connection_operations mds_con_ops = {
.verify_authorizer_reply = verify_authorizer_reply,
.invalidate_authorizer = invalidate_authorizer,
.peer_reset = peer_reset,
.alloc_msg = mds_alloc_msg,
};
/* eof */
......@@ -2804,15 +2804,13 @@ static int ceph_alloc_middle(struct ceph_connection *con, struct ceph_msg *msg)
static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip)
{
struct ceph_msg_header *hdr = &con->in_hdr;
int type = le16_to_cpu(hdr->type);
int front_len = le32_to_cpu(hdr->front_len);
int middle_len = le32_to_cpu(hdr->middle_len);
struct ceph_msg *msg;
int ret = 0;
BUG_ON(con->in_msg != NULL);
BUG_ON(!con->ops->alloc_msg);
if (con->ops->alloc_msg) {
mutex_unlock(&con->mutex);
msg = con->ops->alloc_msg(con, hdr, skip);
mutex_lock(&con->mutex);
......@@ -2835,25 +2833,6 @@ static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip)
"error allocating memory for incoming message";
return -ENOMEM;
}
}
if (!con->in_msg) {
mutex_unlock(&con->mutex);
msg = ceph_msg_new(type, front_len, GFP_NOFS, false);
mutex_lock(&con->mutex);
if (!msg) {
pr_err("unable to allocate msg type %d len %d\n",
type, front_len);
return -ENOMEM;
}
if (con->state != CON_STATE_OPEN) {
ceph_msg_put(msg);
return -EAGAIN;
}
con->in_msg = msg;
con->in_msg->con = con->ops->get(con);
BUG_ON(con->in_msg->con == NULL);
con->in_msg->page_alignment = le16_to_cpu(hdr->data_off);
}
memcpy(&con->in_msg->hdr, &con->in_hdr, sizeof(con->in_hdr));
if (middle_len && !con->in_msg->middle) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment