xfrm: Remove useless xfrm_audit struct.

Commit f1370cc4 "xfrm: Remove useless secid field from xfrm_audit." changed
"struct xfrm_audit" to have either
{ audit_get_loginuid(current) / audit_get_sessionid(current) } or
{ INVALID_UID / -1 } pair.

This means that we can represent "struct xfrm_audit" as "bool".
This patch replaces "struct xfrm_audit" argument with "bool".

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/key/af_key.c b/net/key/af_key.c
index d66ff72a..b47f8e5 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1476,9 +1476,7 @@
 	else
 		err = xfrm_state_update(x);
 
-	xfrm_audit_state_add(x, err ? 0 : 1,
-			     audit_get_loginuid(current),
-			     audit_get_sessionid(current));
+	xfrm_audit_state_add(x, err ? 0 : 1, true);
 
 	if (err < 0) {
 		x->km.state = XFRM_STATE_DEAD;
@@ -1532,9 +1530,7 @@
 	c.event = XFRM_MSG_DELSA;
 	km_state_notify(x, &c);
 out:
-	xfrm_audit_state_delete(x, err ? 0 : 1,
-				audit_get_loginuid(current),
-				audit_get_sessionid(current));
+	xfrm_audit_state_delete(x, err ? 0 : 1, true);
 	xfrm_state_put(x);
 
 	return err;
@@ -1726,16 +1722,13 @@
 	struct net *net = sock_net(sk);
 	unsigned int proto;
 	struct km_event c;
-	struct xfrm_audit audit_info;
 	int err, err2;
 
 	proto = pfkey_satype2proto(hdr->sadb_msg_satype);
 	if (proto == 0)
 		return -EINVAL;
 
-	audit_info.loginuid = audit_get_loginuid(current);
-	audit_info.sessionid = audit_get_sessionid(current);
-	err = xfrm_state_flush(net, proto, &audit_info);
+	err = xfrm_state_flush(net, proto, true);
 	err2 = unicast_flush_resp(sk, hdr);
 	if (err || err2) {
 		if (err == -ESRCH) /* empty table - go quietly */
@@ -2287,9 +2280,7 @@
 	err = xfrm_policy_insert(pol->sadb_x_policy_dir-1, xp,
 				 hdr->sadb_msg_type != SADB_X_SPDUPDATE);
 
-	xfrm_audit_policy_add(xp, err ? 0 : 1,
-			      audit_get_loginuid(current),
-			      audit_get_sessionid(current));
+	xfrm_audit_policy_add(xp, err ? 0 : 1, true);
 
 	if (err)
 		goto out;
@@ -2371,9 +2362,7 @@
 	if (xp == NULL)
 		return -ENOENT;
 
-	xfrm_audit_policy_delete(xp, err ? 0 : 1,
-				 audit_get_loginuid(current),
-				 audit_get_sessionid(current));
+	xfrm_audit_policy_delete(xp, err ? 0 : 1, true);
 
 	if (err)
 		goto out;
@@ -2621,9 +2610,7 @@
 		return -ENOENT;
 
 	if (delete) {
-		xfrm_audit_policy_delete(xp, err ? 0 : 1,
-				audit_get_loginuid(current),
-				audit_get_sessionid(current));
+		xfrm_audit_policy_delete(xp, err ? 0 : 1, true);
 
 		if (err)
 			goto out;
@@ -2732,12 +2719,9 @@
 {
 	struct net *net = sock_net(sk);
 	struct km_event c;
-	struct xfrm_audit audit_info;
 	int err, err2;
 
-	audit_info.loginuid = audit_get_loginuid(current);
-	audit_info.sessionid = audit_get_sessionid(current);
-	err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info);
+	err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, true);
 	err2 = unicast_flush_resp(sk, hdr);
 	if (err || err2) {
 		if (err == -ESRCH) /* empty table - old silent behavior */