ceph: define ceph_auth_handshake type

The definitions for the ceph_mds_session and ceph_osd both contain
five fields related only to "authorizers." Encapsulate those fields
into their own struct type, allowing for better isolation in some
upcoming patches.

Fix the #includes in "linux/ceph/osd_client.h" to lay out their more
complete canonical path.

Signed-off-by: Alex Elder <[e-mail]>
Reviewed-by: Sage Weil <[e-mail]>

fs/ceph/mds_client.c

···
 	dout("mdsc put_session %p %d -> %d\n", s,
 	     atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1);
 	if (atomic_dec_and_test(&s->s_ref)) {
-		if (s->s_authorizer)
+		if (s->s_auth.authorizer)
 		     s->s_mdsc->fsc->client->monc.auth->ops->destroy_authorizer(
 			     s->s_mdsc->fsc->client->monc.auth,
-			     s->s_authorizer);
+			     s->s_auth.authorizer);
 		kfree(s);
 	}
 }
···
 	struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
 	int ret = 0;
 
-	if (force_new && s->s_authorizer) {
-		ac->ops->destroy_authorizer(ac, s->s_authorizer);
-		s->s_authorizer = NULL;
+	if (force_new && s->s_auth.authorizer) {
+		ac->ops->destroy_authorizer(ac, s->s_auth.authorizer);
+		s->s_auth.authorizer = NULL;
 	}
-	if (s->s_authorizer == NULL) {
+	if (s->s_auth.authorizer == NULL) {
 		if (ac->ops->create_authorizer) {
 			ret = ac->ops->create_authorizer(
 				ac, CEPH_ENTITY_TYPE_MDS,
-				&s->s_authorizer,
-				&s->s_authorizer_buf,
-				&s->s_authorizer_buf_len,
-				&s->s_authorizer_reply_buf,
-				&s->s_authorizer_reply_buf_len);
+				&s->s_auth.authorizer,
+				&s->s_auth.authorizer_buf,
+				&s->s_auth.authorizer_buf_len,
+				&s->s_auth.authorizer_reply_buf,
+				&s->s_auth.authorizer_reply_buf_len);
 			if (ret)
 				return ret;
 		}
 	}
 
 	*proto = ac->protocol;
-	*buf = s->s_authorizer_buf;
-	*len = s->s_authorizer_buf_len;
-	*reply_buf = s->s_authorizer_reply_buf;
-	*reply_len = s->s_authorizer_reply_buf_len;
+	*buf = s->s_auth.authorizer_buf;
+	*len = s->s_auth.authorizer_buf_len;
+	*reply_buf = s->s_auth.authorizer_reply_buf;
+	*reply_len = s->s_auth.authorizer_reply_buf_len;
 	return 0;
 }
 
···
 	struct ceph_mds_client *mdsc = s->s_mdsc;
 	struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
 
-	return ac->ops->verify_authorizer_reply(ac, s->s_authorizer, len);
+	return ac->ops->verify_authorizer_reply(ac, s->s_auth.authorizer, len);
 }
 
 static int invalidate_authorizer(struct ceph_connection *con)

fs/ceph/mds_client.h

···
 #include <linux/ceph/types.h>
 #include <linux/ceph/messenger.h>
 #include <linux/ceph/mdsmap.h>
+#include <linux/ceph/auth.h>
 
 /*
  * Some lock dependencies:
···
 
 	struct ceph_connection s_con;
 
-	struct ceph_authorizer *s_authorizer;
-	void             *s_authorizer_buf, *s_authorizer_reply_buf;
-	size_t            s_authorizer_buf_len, s_authorizer_reply_buf_len;
+	struct ceph_auth_handshake s_auth;
 
 	/* protected by s_gen_ttl_lock */
 	spinlock_t        s_gen_ttl_lock;

include/linux/ceph/auth.h

···
 struct ceph_auth_client;
 struct ceph_authorizer;
 
+struct ceph_auth_handshake {
+	struct ceph_authorizer *authorizer;
+	void *authorizer_buf;
+	size_t authorizer_buf_len;
+	void *authorizer_reply_buf;
+	size_t authorizer_reply_buf_len;
+};
+
 struct ceph_auth_client_ops {
 	const char *name;
 

include/linux/ceph/osd_client.h

···
 #include <linux/mempool.h>
 #include <linux/rbtree.h>
 
-#include "types.h"
-#include "osdmap.h"
-#include "messenger.h"
+#include <linux/ceph/types.h>
+#include <linux/ceph/osdmap.h>
+#include <linux/ceph/messenger.h>
+#include <linux/ceph/auth.h>
 
 /* 
  * Maximum object name size 
···
 	struct list_head o_requests;
 	struct list_head o_linger_requests;
 	struct list_head o_osd_lru;
-	struct ceph_authorizer *o_authorizer;
-	void *o_authorizer_buf, *o_authorizer_reply_buf;
-	size_t o_authorizer_buf_len, o_authorizer_reply_buf_len;
+	struct ceph_auth_handshake o_auth;
 	unsigned long lru_ttl;
 	int o_marked_for_keepalive;
 	struct list_head o_keepalive_item;

net/ceph/osd_client.c

···
 	if (atomic_dec_and_test(&osd->o_ref)) {
 		struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
 
-		if (osd->o_authorizer)
-			ac->ops->destroy_authorizer(ac, osd->o_authorizer);
+		if (osd->o_auth.authorizer)
+			ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer);
 		kfree(osd);
 	}
 }
···
 	struct ceph_auth_client *ac = osdc->client->monc.auth;
 	int ret = 0;
 
-	if (force_new && o->o_authorizer) {
-		ac->ops->destroy_authorizer(ac, o->o_authorizer);
-		o->o_authorizer = NULL;
+	if (force_new && o->o_auth.authorizer) {
+		ac->ops->destroy_authorizer(ac, o->o_auth.authorizer);
+		o->o_auth.authorizer = NULL;
 	}
-	if (o->o_authorizer == NULL) {
+	if (o->o_auth.authorizer == NULL) {
 		ret = ac->ops->create_authorizer(
 			ac, CEPH_ENTITY_TYPE_OSD,
-			&o->o_authorizer,
-			&o->o_authorizer_buf,
-			&o->o_authorizer_buf_len,
-			&o->o_authorizer_reply_buf,
-			&o->o_authorizer_reply_buf_len);
+			&o->o_auth.authorizer,
+			&o->o_auth.authorizer_buf,
+			&o->o_auth.authorizer_buf_len,
+			&o->o_auth.authorizer_reply_buf,
+			&o->o_auth.authorizer_reply_buf_len);
 		if (ret)
 			return ret;
 	}
 
 	*proto = ac->protocol;
-	*buf = o->o_authorizer_buf;
-	*len = o->o_authorizer_buf_len;
-	*reply_buf = o->o_authorizer_reply_buf;
-	*reply_len = o->o_authorizer_reply_buf_len;
+	*buf = o->o_auth.authorizer_buf;
+	*len = o->o_auth.authorizer_buf_len;
+	*reply_buf = o->o_auth.authorizer_reply_buf;
+	*reply_len = o->o_auth.authorizer_reply_buf_len;
 	return 0;
 }
 
···
 	struct ceph_osd_client *osdc = o->o_osdc;
 	struct ceph_auth_client *ac = osdc->client->monc.auth;
 
-	return ac->ops->verify_authorizer_reply(ac, o->o_authorizer, len);
+	return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len);
 }
 
 static int invalidate_authorizer(struct ceph_connection *con)