*: Convert connected_free to a double pointer

Set the connected pointer to set the pointer to NULL.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

17 files changed, 39 insertions, 29 deletions

diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
index 7923f076c1..d0a732b153 100644
--- a/bgpd/bgp_zebra.c
+++ b/bgpd/bgp_zebra.c
@@ -357,7 +357,7 @@ static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS)
 		bgp_connected_delete(bgp, ifc);
 	}
 
-	connected_free(ifc);
+	connected_free(&ifc);
 
 	return 0;
 }
diff --git a/eigrpd/eigrp_zebra.c b/eigrpd/eigrp_zebra.c
index 9a0fdda0f9..3205f13922 100644
--- a/eigrpd/eigrp_zebra.c
+++ b/eigrpd/eigrp_zebra.c
@@ -189,7 +189,7 @@ static int eigrp_interface_address_delete(ZAPI_CALLBACK_ARGS)
 	if (prefix_cmp(&ei->address, c->address) == 0)
 		eigrp_if_free(ei, INTERFACE_DOWN_BY_ZEBRA);
 
-	connected_free(c);
+	connected_free(&c);
 
 	return 0;
 }
diff --git a/isisd/isis_zebra.c b/isisd/isis_zebra.c
index bdf6869f5c..b4c699ccbb 100644
--- a/isisd/isis_zebra.c
+++ b/isisd/isis_zebra.c
@@ -128,7 +128,7 @@ static int isis_zebra_if_address_del(ZAPI_CALLBACK_ARGS)
 
 	if (if_is_operative(ifp))
 		isis_circuit_del_addr(circuit_scan_by_ifp(ifp), c);
-	connected_free(c);
+	connected_free(&c);
 
 	return 0;
 }
diff --git a/ldpd/ldp_zebra.c b/ldpd/ldp_zebra.c
index 4df1fc0304..946b51e4ee 100644
--- a/ldpd/ldp_zebra.c
+++ b/ldpd/ldp_zebra.c
@@ -368,7 +368,7 @@ ldp_interface_address_delete(ZAPI_CALLBACK_ARGS)
 
 	ifp = ifc->ifp;
 	ifc2kaddr(ifp, ifc, &ka);
-	connected_free(ifc);
+	connected_free(&ifc);
 
 	/* Filter invalid addresses.  */
 	if (bad_addr(ka.af, &ka.addr))
diff --git a/lib/if.c b/lib/if.c
index a185d53ef7..e61bf00283 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -140,6 +140,13 @@ static int if_cmp_index_func(const struct interface *ifp1,
 	return ifp1->ifindex - ifp2->ifindex;
 }
 
+static void ifp_connected_free(void *arg)
+{
+	struct connected *c = arg;
+
+	connected_free(&c);
+}
+
 /* Create new interface structure. */
 static struct interface *if_new(vrf_id_t vrf_id)
 {
@@ -153,7 +160,7 @@ static struct interface *if_new(vrf_id_t vrf_id)
 	ifp->vrf_id = vrf_id;
 
 	ifp->connected = list_new();
-	ifp->connected->del = (void (*)(void *))connected_free;
+	ifp->connected->del = ifp_connected_free;
 
 	ifp->nbr_connected = list_new();
 	ifp->nbr_connected->del = (void (*)(void *))nbr_connected_free;
@@ -866,17 +873,20 @@ struct nbr_connected *nbr_connected_new(void)
 }
 
 /* Free connected structure. */
-void connected_free(struct connected *connected)
+void connected_free(struct connected **connected)
 {
-	if (connected->address)
-		prefix_free(&connected->address);
+	struct connected *ptr = *connected;
+
+	if (ptr->address)
+		prefix_free(&ptr->address);
 
-	if (connected->destination)
-		prefix_free(&connected->destination);
+	if (ptr->destination)
+		prefix_free(&ptr->destination);
 
-	XFREE(MTYPE_CONNECTED_LABEL, connected->label);
+	XFREE(MTYPE_CONNECTED_LABEL, ptr->label);
 
-	XFREE(MTYPE_CONNECTED, connected);
+	XFREE(MTYPE_CONNECTED, ptr);
+	*connected = NULL;
 }
 
 /* Free nbr connected structure. */
diff --git a/lib/if.h b/lib/if.h
index 6322290937..6d966a2556 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -543,7 +543,7 @@ extern ifindex_t ifname2ifindex(const char *ifname, vrf_id_t vrf_id);
 
 /* Connected address functions. */
 extern struct connected *connected_new(void);
-extern void connected_free(struct connected *);
+extern void connected_free(struct connected **connected);
 extern void connected_add(struct interface *, struct connected *);
 extern struct connected *
 connected_add_by_prefix(struct interface *, struct prefix *, struct prefix *);
diff --git a/nhrpd/nhrp_interface.c b/nhrpd/nhrp_interface.c
index e4f614c7c4..9f828a1c7d 100644
--- a/nhrpd/nhrp_interface.c
+++ b/nhrpd/nhrp_interface.c
@@ -364,7 +364,7 @@ int nhrp_interface_address_delete(ZAPI_CALLBACK_ARGS)
 
 	nhrp_interface_update_address(
 		ifc->ifp, family2afi(PREFIX_FAMILY(ifc->address)), 0);
-	connected_free(ifc);
+	connected_free(&ifc);
 
 	return 0;
 }
diff --git a/ospf6d/ospf6_zebra.c b/ospf6d/ospf6_zebra.c
index d8a6a39e1e..6832737ada 100644
--- a/ospf6d/ospf6_zebra.c
+++ b/ospf6d/ospf6_zebra.c
@@ -143,7 +143,7 @@ static int ospf6_zebra_if_address_update_delete(ZAPI_CALLBACK_ARGS)
 		ospf6_interface_state_update(c->ifp);
 	}
 
-	connected_free(c);
+	connected_free(&c);
 
 	return 0;
 }
diff --git a/ospfd/ospf_zebra.c b/ospfd/ospf_zebra.c
index 5678d545ba..68d9d3bf83 100644
--- a/ospfd/ospf_zebra.c
+++ b/ospfd/ospf_zebra.c
@@ -150,7 +150,7 @@ static int ospf_interface_address_delete(ZAPI_CALLBACK_ARGS)
 
 	rn = route_node_lookup(IF_OIFS(ifp), &p);
 	if (!rn) {
-		connected_free(c);
+		connected_free(&c);
 		return 0;
 	}
 
@@ -163,7 +163,7 @@ static int ospf_interface_address_delete(ZAPI_CALLBACK_ARGS)
 
 	ospf_if_interface(c->ifp);
 
-	connected_free(c);
+	connected_free(&c);
 
 	return 0;
 }
diff --git a/pbrd/pbr_zebra.c b/pbrd/pbr_zebra.c
index 39e92467ab..719374e3b9 100644
--- a/pbrd/pbr_zebra.c
+++ b/pbrd/pbr_zebra.c
@@ -109,7 +109,7 @@ static int interface_address_delete(ZAPI_CALLBACK_ARGS)
 	       "%s: %s deleted %s", __PRETTY_FUNCTION__, c->ifp->name,
 	       prefix2str(c->address, buf, sizeof(buf)));
 
-	connected_free(c);
+	connected_free(&c);
 	return 0;
 }
 
diff --git a/pimd/pim_zebra.c b/pimd/pim_zebra.c
index dadcbbe65d..dfddee99d0 100644
--- a/pimd/pim_zebra.c
+++ b/pimd/pim_zebra.c
@@ -233,7 +233,7 @@ static int pim_zebra_if_address_del(ZAPI_CALLBACK_ARGS)
 		pim_i_am_rp_re_evaluate(pim);
 	}
 
-	connected_free(c);
+	connected_free(&c);
 	return 0;
 }
 
diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index 3173277ba7..4d48740606 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -648,7 +648,7 @@ int rip_interface_address_delete(ZAPI_CALLBACK_ARGS)
 			rip_apply_address_del(ifc);
 		}
 
-		connected_free(ifc);
+		connected_free(&ifc);
 	}
 
 	return 0;
diff --git a/ripngd/ripng_interface.c b/ripngd/ripng_interface.c
index 9209a76460..97113a180f 100644
--- a/ripngd/ripng_interface.c
+++ b/ripngd/ripng_interface.c
@@ -430,7 +430,7 @@ int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS)
 			/* Check wether this prefix needs to be removed. */
 			ripng_apply_address_del(ifc);
 		}
-		connected_free(ifc);
+		connected_free(&ifc);
 	}
 
 	return 0;
diff --git a/sharpd/sharp_zebra.c b/sharpd/sharp_zebra.c
index da2aa2f539..cd577e9051 100644
--- a/sharpd/sharp_zebra.c
+++ b/sharpd/sharp_zebra.c
@@ -73,7 +73,7 @@ static int interface_address_delete(ZAPI_CALLBACK_ARGS)
 	if (!c)
 		return 0;
 
-	connected_free(c);
+	connected_free(&c);
 	return 0;
 }
 
diff --git a/staticd/static_zebra.c b/staticd/static_zebra.c
index 049cb4b4fa..a474613b4d 100644
--- a/staticd/static_zebra.c
+++ b/staticd/static_zebra.c
@@ -79,7 +79,7 @@ static int interface_address_delete(ZAPI_CALLBACK_ARGS)
 	if (!c)
 		return 0;
 
-	connected_free(c);
+	connected_free(&c);
 	return 0;
 }
 
diff --git a/zebra/connected.c b/zebra/connected.c
index 75f4f53bc6..0ff474d787 100644
--- a/zebra/connected.c
+++ b/zebra/connected.c
@@ -65,7 +65,7 @@ static void connected_withdraw(struct connected *ifc)
 
 	if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED)) {
 		listnode_delete(ifc->ifp->connected, ifc);
-		connected_free(ifc);
+		connected_free(&ifc);
 	}
 }
 
@@ -177,7 +177,7 @@ static void connected_update(struct interface *ifp, struct connected *ifc)
 		 */
 		if (connected_same(current, ifc)) {
 			/* nothing to do */
-			connected_free(ifc);
+			connected_free(&ifc);
 			return;
 		}
 
diff --git a/zebra/interface.c b/zebra/interface.c
index daa93e36d1..5871b8746f 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -738,7 +738,7 @@ static void if_delete_connected(struct interface *ifp)
 							ZEBRA_IFC_CONFIGURED)) {
 						listnode_delete(ifp->connected,
 								ifc);
-						connected_free(ifc);
+						connected_free(&ifc);
 					} else
 						last = node;
 				}
@@ -759,7 +759,7 @@ static void if_delete_connected(struct interface *ifp)
 				last = node;
 			else {
 				listnode_delete(ifp->connected, ifc);
-				connected_free(ifc);
+				connected_free(&ifc);
 			}
 		} else {
 			last = node;
@@ -2878,7 +2878,7 @@ static int ip_address_uninstall(struct vty *vty, struct interface *ifp,
 	if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_QUEUED)
 	    || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) {
 		listnode_delete(ifp->connected, ifc);
-		connected_free(ifc);
+		connected_free(&ifc);
 		return CMD_WARNING_CONFIG_FAILED;
 	}
 
@@ -3103,7 +3103,7 @@ static int ipv6_address_uninstall(struct vty *vty, struct interface *ifp,
 	if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_QUEUED)
 	    || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) {
 		listnode_delete(ifp->connected, ifc);
-		connected_free(ifc);
+		connected_free(&ifc);
 		return CMD_WARNING_CONFIG_FAILED;
 	}