From: sashan <sashan@openbsd.org>
Date: Tue, 13 Oct 2015 19:32:31 +0000 (+0000)
Subject: - pf_insert_src_node(): global argument (arg6) is useless, function
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=614a62ad7ddb5b7e95bfb87244c323bef6740a59;p=openbsd

- pf_insert_src_node(): global argument (arg6) is useless, function
  always gets pointer to rule.

- pf_remove_src_node(): function should always remove matching src node,
  regardless the sn->rule.ptr being NULL or valid rule

- sn->rule.ptr is never NULL, spotted by mpi and Richard Procter _von_ gmail.com

OK mpi@, OK mikeb@
---

diff --git a/sys/net/pf.c b/sys/net/pf.c
index bc5cc6a9c34..174a4cc478f 100644
--- a/sys/net/pf.c
+++ b/sys/net/pf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pf.c,v 1.946 2015/10/08 11:36:51 dlg Exp $ */
+/*	$OpenBSD: pf.c,v 1.947 2015/10/13 19:32:31 sashan Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -501,7 +501,7 @@ pf_src_connlimit(struct pf_state **state)
 int
 pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
     enum pf_sn_types type, sa_family_t af, struct pf_addr *src,
-    struct pf_addr *raddr, int global)
+    struct pf_addr *raddr)
 {
 	struct pf_src_node	k;
 
@@ -509,10 +509,7 @@ pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
 		k.af = af;
 		k.type = type;
 		PF_ACPY(&k.addr, src, af);
-		if (global)
-			k.rule.ptr = NULL;
-		else
-			k.rule.ptr = rule;
+		k.rule.ptr = rule;
 		pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
 		*sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
 	}
@@ -531,10 +528,7 @@ pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
 
 		(*sn)->type = type;
 		(*sn)->af = af;
-		if (global)
-			(*sn)->rule.ptr = NULL;
-		else
-			(*sn)->rule.ptr = rule;
+		(*sn)->rule.ptr = rule;
 		PF_ACPY(&(*sn)->addr, src, af);
 		if (raddr)
 			PF_ACPY(&(*sn)->raddr, raddr, af);
@@ -550,8 +544,7 @@ pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
 			return (-1);
 		}
 		(*sn)->creation = time_uptime;
-		if ((*sn)->rule.ptr != NULL)
-			(*sn)->rule.ptr->src_nodes++;
+		(*sn)->rule.ptr->src_nodes++;
 		pf_status.scounters[SCNT_SRC_NODE_INSERT]++;
 		pf_status.src_nodes++;
 	} else {
@@ -570,16 +563,14 @@ pf_remove_src_node(struct pf_src_node *sn)
 	if (sn->states > 0 || sn->expire > time_uptime)
 		return;
 
-	if (sn->rule.ptr != NULL) {
-		sn->rule.ptr->src_nodes--;
-		if (sn->rule.ptr->states_cur == 0 &&
-		    sn->rule.ptr->src_nodes == 0)
-			pf_rm_rule(NULL, sn->rule.ptr);
-		RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
-		pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
-		pf_status.src_nodes--;
-		pool_put(&pf_src_tree_pl, sn);
-	}
+	sn->rule.ptr->src_nodes--;
+	if (sn->rule.ptr->states_cur == 0 &&
+	    sn->rule.ptr->src_nodes == 0)
+		pf_rm_rule(NULL, sn->rule.ptr);
+	RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
+	pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+	pf_status.src_nodes--;
+	pool_put(&pf_src_tree_pl, sn);
 }
 
 struct pf_src_node *
@@ -3381,7 +3372,7 @@ pf_test_rule(struct pf_pdesc *pd, struct pf_rule **rm, struct pf_state **sm,
 
 		if (r->rule_flag & PFRULE_SRCTRACK &&
 		    pf_insert_src_node(&sns[PF_SN_NONE], r, PF_SN_NONE, pd->af,
-		    pd->src, NULL, 0) != 0) {
+		    pd->src, NULL) != 0) {
 			REASON_SET(&reason, PFRES_SRCLIMIT);
 			goto cleanup;
 		}
diff --git a/sys/net/pf_ioctl.c b/sys/net/pf_ioctl.c
index 6939a4357e3..0709b8fb9ed 100644
--- a/sys/net/pf_ioctl.c
+++ b/sys/net/pf_ioctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pf_ioctl.c,v 1.290 2015/09/04 21:40:25 kettenis Exp $ */
+/*	$OpenBSD: pf_ioctl.c,v 1.291 2015/10/13 19:32:31 sashan Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -2175,8 +2175,7 @@ pfioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
 			bzero(&pstore->entry, sizeof(pstore->entry));
 			pstore->rule.ptr = NULL;
 			pstore->kif = NULL;
-			if (n->rule.ptr != NULL)
-				pstore->rule.nr = n->rule.ptr->nr;
+			pstore->rule.nr = n->rule.ptr->nr;
 			pstore->creation = secs - pstore->creation;
 			if (pstore->expire > secs)
 				pstore->expire -= secs;
diff --git a/sys/net/pf_lb.c b/sys/net/pf_lb.c
index 6a8ea988d1d..72d5c27950e 100644
--- a/sys/net/pf_lb.c
+++ b/sys/net/pf_lb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pf_lb.c,v 1.49 2015/08/03 13:33:12 jsg Exp $ */
+/*	$OpenBSD: pf_lb.c,v 1.50 2015/10/13 19:32:31 sashan Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -621,8 +621,7 @@ pf_map_addr(sa_family_t af, struct pf_rule *r, struct pf_addr *saddr,
 			pf_remove_src_node(sns[type]);
 			sns[type] = NULL;
 		}
-		if (pf_insert_src_node(&sns[type], r, type, af, saddr, naddr,
-		    0))
+		if (pf_insert_src_node(&sns[type], r, type, af, saddr, naddr))
 			return (1);
 	}
 
diff --git a/sys/net/pfvar.h b/sys/net/pfvar.h
index b540c73e74f..cdb2f7f1017 100644
--- a/sys/net/pfvar.h
+++ b/sys/net/pfvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pfvar.h,v 1.420 2015/08/19 21:22:41 sashan Exp $ */
+/*	$OpenBSD: pfvar.h,v 1.421 2015/10/13 19:32:32 sashan Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -1681,7 +1681,7 @@ extern int			 pf_state_insert(struct pfi_kif *,
 int				 pf_insert_src_node(struct pf_src_node **,
 				    struct pf_rule *, enum pf_sn_types,
 				    sa_family_t, struct pf_addr *,
-				    struct pf_addr *, int);
+				    struct pf_addr *);
 void				 pf_remove_src_node(struct pf_src_node *);
 struct pf_src_node		*pf_get_src_node(struct pf_state *,
 				    enum pf_sn_types);