4.14-stable review patch. If anyone has any objections, please let me know.
------------------
commit 262614c4294d33b1f19e0d18c0091d9c329b544a upstream.
We already copy authorizer_reply_buf and authorizer_reply_buf_len into
ceph_connection. Factoring out __prepare_write_connect() requires two
more: authorizer_buf and authorizer_buf_len. Store the pointer to the
handshake in con->auth rather than piling on.
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/ceph/messenger.h | 3 +-
net/ceph/messenger.c | 54 ++++++++++++++++------------------
2 files changed, 27 insertions(+), 30 deletions(-)
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index ead9d85f1c11..9056077c023f 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -203,9 +203,8 @@ struct ceph_connection {
attempt for this connection, client */
u32 peer_global_seq; /* peer's global seq for this connection */
+ struct ceph_auth_handshake *auth;
int auth_retry; /* true if we need a newer authorizer */
- void *auth_reply_buf; /* where to put the authorizer reply */
- int auth_reply_buf_len;
struct mutex mutex;
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 5281da82371a..3a82e6d2864b 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1411,24 +1411,26 @@ static void prepare_write_keepalive(struct ceph_connection *con)
* Connection negotiation.
*/
-static struct ceph_auth_handshake *get_connect_authorizer(struct ceph_connection *con,
- int *auth_proto)
+static int get_connect_authorizer(struct ceph_connection *con)
{
struct ceph_auth_handshake *auth;
+ int auth_proto;
if (!con->ops->get_authorizer) {
+ con->auth = NULL;
con->out_connect.authorizer_protocol = CEPH_AUTH_UNKNOWN;
con->out_connect.authorizer_len = 0;
- return NULL;
+ return 0;
}
- auth = con->ops->get_authorizer(con, auth_proto, con->auth_retry);
+ auth = con->ops->get_authorizer(con, &auth_proto, con->auth_retry);
if (IS_ERR(auth))
- return auth;
+ return PTR_ERR(auth);
- con->auth_reply_buf = auth->authorizer_reply_buf;
- con->auth_reply_buf_len = auth->authorizer_reply_buf_len;
- return auth;
+ con->auth = auth;
+ con->out_connect.authorizer_protocol = cpu_to_le32(auth_proto);
+ con->out_connect.authorizer_len = cpu_to_le32(auth->authorizer_buf_len);
+ return 0;
}
/*
@@ -1448,8 +1450,7 @@ static int prepare_write_connect(struct ceph_connection *con)
{
unsigned int global_seq = get_global_seq(con->msgr, 0);
int proto;
- int auth_proto;
- struct ceph_auth_handshake *auth;
+ int ret;
switch (con->peer_name.type) {
case CEPH_ENTITY_TYPE_MON:
@@ -1476,20 +1477,15 @@ static int prepare_write_connect(struct ceph_connection *con)
con->out_connect.protocol_version = cpu_to_le32(proto);
con->out_connect.flags = 0;
- auth_proto = CEPH_AUTH_UNKNOWN;
- auth = get_connect_authorizer(con, &auth_proto);
- if (IS_ERR(auth))
- return PTR_ERR(auth);
-
- con->out_connect.authorizer_protocol = cpu_to_le32(auth_proto);
- con->out_connect.authorizer_len = auth ?
- cpu_to_le32(auth->authorizer_buf_len) : 0;
+ ret = get_connect_authorizer(con);
+ if (ret)
+ return ret;
con_out_kvec_add(con, sizeof (con->out_connect),
&con->out_connect);
- if (auth && auth->authorizer_buf_len)
- con_out_kvec_add(con, auth->authorizer_buf_len,
- auth->authorizer_buf);
+ if (con->auth)
+ con_out_kvec_add(con, con->auth->authorizer_buf_len,
+ con->auth->authorizer_buf);
con->out_more = 0;
con_flag_set(con, CON_FLAG_WRITE_PENDING);
@@ -1753,11 +1749,14 @@ static int read_partial_connect(struct ceph_connection *con)
if (ret <= 0)
goto out;
- size = le32_to_cpu(con->in_reply.authorizer_len);
- end += size;
- ret = read_partial(con, end, size, con->auth_reply_buf);
- if (ret <= 0)
- goto out;
+ if (con->auth) {
+ size = le32_to_cpu(con->in_reply.authorizer_len);
+ end += size;
+ ret = read_partial(con, end, size,
+ con->auth->authorizer_reply_buf);
+ if (ret <= 0)
+ goto out;
+ }
dout("read_partial_connect %p tag %d, con_seq = %u, g_seq = %u\n",
con, (int)con->in_reply.tag,
@@ -1765,7 +1764,6 @@ static int read_partial_connect(struct ceph_connection *con)
le32_to_cpu(con->in_reply.global_seq));
out:
return ret;
-
}
/*
@@ -2048,7 +2046,7 @@ static int process_connect(struct ceph_connection *con)
dout("process_connect on %p tag %d\n", con, (int)con->in_tag);
- if (con->auth_reply_buf) {
+ if (con->auth) {
/*
* Any connection that defines ->get_authorizer()
* should also define ->verify_authorizer_reply().
--
2.17.1
