sparse: Add guards to prevent FreeBSD-incompatible #include order.

FreeBSD insists that <sys/types.h> be included before <netinet/in.h> and
that <netinet/in.h> be included before <arpa/inet.h>.  This adds guards to
the "sparse" headers to yield a warning if this order is violated.  This
commit also adjusts the order of many #includes to suit this requirement.

Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Justin Pettit <jpettit@ovn.org>

configure.ac

@@ -105,6 +105,7 @@ AC_CHECK_MEMBERS([struct ifreq.ifr_flagshigh], [], [], [[#include <net/if.h>]])
 AC_CHECK_MEMBERS([struct mmsghdr.msg_len], [], [], [[#include <sys/socket.h>]])
 AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_scope_id], [], [],
   [[#include <sys/socket.h>
+#include <sys/types.h>
 #include <netinet/in.h>]])
 AC_CHECK_FUNCS([mlockall strnlen getloadavg statvfs getmntent_r sendmmsg clock_gettime])
 AC_CHECK_HEADERS([mntent.h sys/statvfs.h linux/types.h linux/if_ether.h stdatomic.h])

include/openvswitch/packets.h

@@ -17,6 +17,7 @@
 #ifndef OPENVSWITCH_PACKETS_H
 #define OPENVSWITCH_PACKETS_H 1
 
+#include <sys/types.h>
 #include <netinet/in.h>
 #include "openvswitch/tun-metadata.h"
 

include/sparse/arpa/inet.h

@@ -18,4 +18,8 @@
 #error "Use this header only with sparse.  It is not a correct implementation."
 #endif
 
+#ifndef NETINET_IN_H_INCLUDED
+#error "Must include <netinet/in.h> before <arpa/inet.h> for FreeBSD support"
+#endif
+
 #include <netinet/in.h>

include/sparse/automake.mk

@@ -13,4 +13,5 @@ noinst_HEADERS += \
         include/sparse/rte_memcpy.h \
         include/sparse/rte_vect.h \
         include/sparse/sys/socket.h \
+        include/sparse/sys/types.h \
         include/sparse/sys/wait.h

include/sparse/netinet/in.h

@@ -18,6 +18,12 @@
 #error "Use this header only with sparse.  It is not a correct implementation."
 #endif
 
+#define NETINET_IN_H_INCLUDED 1
+
+#ifndef SYS_TYPES_H_INCLUDED
+#error "Must include <sys/types.h> before <netinet/in.h> for FreeBSD support"
+#endif
+
 #ifndef _NETINET_IN_H
 #define _NETINET_IN_H 1
 

include/sparse/sys/types.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2011, 2013, 2014, 2015, 2017 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse.  It is not a correct implementation."
+#endif
+
+#define SYS_TYPES_H_INCLUDED 1
+#include_next <sys/types.h>

lib/bfd.c

@@ -16,6 +16,7 @@
 #include "bfd.h"
 
 #include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>

lib/bundle.c

@@ -17,6 +17,8 @@
 
 #include "bundle.h"
 
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <inttypes.h>
 

lib/bundle.h

@@ -16,6 +16,8 @@
 #ifndef BUNDLE_H
 #define BUNDLE_H 1
 
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdbool.h>
 #include <stddef.h>

lib/byte-order.h

@@ -16,8 +16,9 @@
 #ifndef BYTE_ORDER_H
 #define BYTE_ORDER_H 1
 
-#include <arpa/inet.h>
 #include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
 #include <inttypes.h>
 #include "openvswitch/types.h"
 

lib/classifier.c

@@ -18,6 +18,7 @@
 #include "classifier.h"
 #include "classifier-private.h"
 #include <errno.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include "byte-order.h"
 #include "openvswitch/dynamic-string.h"

lib/csum.c

@@ -17,6 +17,7 @@
 #include <config.h>
 #include "csum.h"
 #include "unaligned.h"
+#include <sys/types.h>
 #include <netinet/in.h>
 
 #ifndef __CHECKER__

lib/dpctl.c

@@ -15,12 +15,13 @@
  */
 
 #include <config.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <sys/socket.h>
 #include <net/if.h>
-#include <netinet/in.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>

lib/dpif-netdev.c

@@ -22,6 +22,7 @@
 #include <fcntl.h>
 #include <inttypes.h>
 #include <net/if.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <stdint.h>
 #include <stdlib.h>

lib/learning-switch.c

@@ -19,6 +19,7 @@
 
 #include <errno.h>
 #include <inttypes.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <stdlib.h>
 #include <time.h>

lib/lldp/lldpd-structs.h

@@ -20,11 +20,9 @@
 #define _LLDPD_STRUCTS_H
 
 #include <net/if.h>
-#ifndef _WIN32
+#include <sys/types.h>
 #include <netinet/in.h>
-#endif
 #include <sys/socket.h>
-#include <sys/types.h>
 #include "aa-structs.h"
 #include "lldp-const.h"
 #include "packets.h"

lib/lldp/lldpd.c

@@ -18,6 +18,8 @@
 
 #include <config.h>
 #include "lldpd.h"
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -28,7 +30,6 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/time.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 #ifndef _WIN32

lib/lldp/lldpd.h

@@ -19,13 +19,11 @@
 #ifndef _LLDPD_H
 #define _LLDPD_H
 
-#ifndef _WIN32
+#include <sys/types.h>
 #include <netinet/in.h>
-#endif
 #include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
-#include <sys/types.h>
 #include "dp-packet.h"
 #include "openvswitch/list.h"
 #include "lldpd-structs.h"

lib/multipath.c

@@ -17,10 +17,10 @@
 #include <config.h>
 
 #include "multipath.h"
-#include <arpa/inet.h>
-#include <inttypes.h>
 #include <sys/types.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
+#include <inttypes.h>
 #include "colors.h"
 #include "nx-match.h"
 #include "openflow/nicira-ext.h"

lib/netdev-linux.c

@@ -20,6 +20,8 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <inttypes.h>
 #include <linux/filter.h>
@@ -31,7 +33,6 @@
 #include <linux/mii.h>
 #include <linux/rtnetlink.h>
 #include <linux/sockios.h>
-#include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/utsname.h>
@@ -40,7 +41,6 @@
 #include <net/if_arp.h>
 #include <net/if_packet.h>
 #include <net/route.h>
-#include <netinet/in.h>
 #include <poll.h>
 #include <stdlib.h>
 #include <string.h>

lib/netdev-native-tnl.c

@@ -23,6 +23,7 @@
 #include <fcntl.h>
 #include <sys/socket.h>
 #include <net/if.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <netinet/ip.h>
 #include <netinet/ip6.h>

lib/netdev-vport.c

@@ -23,6 +23,7 @@
 #include <fcntl.h>
 #include <sys/socket.h>
 #include <net/if.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <netinet/ip6.h>
 #include <sys/ioctl.h>

lib/netdev.c

@@ -19,6 +19,7 @@
 
 #include <errno.h>
 #include <inttypes.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <stdlib.h>
 #include <string.h>
@@ -28,7 +29,6 @@
 #include <ifaddrs.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
-#include <sys/types.h>
 #endif
 
 #include "cmap.h"

lib/netlink.h

@@ -31,6 +31,7 @@
  * Linux-specific definitions for Netlink sockets, see netlink-socket.h.
  */
 
+#include <sys/types.h>
 #include <netinet/in.h>
 #include <stdbool.h>
 #include <stddef.h>

lib/odp-execute.c

@@ -17,8 +17,9 @@
 
 #include <config.h>
 #include "odp-execute.h"
-#include <arpa/inet.h>
+#include <sys/types.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <netinet/icmp6.h>
 #include <netinet/ip6.h>
 #include <stdlib.h>

lib/odp-util.c

@@ -15,12 +15,13 @@
  */
 
 #include <config.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include "odp-util.h"
 #include <errno.h>
 #include <inttypes.h>
 #include <math.h>
-#include <netinet/in.h>
 #include <netinet/icmp6.h>
 #include <netinet/ip6.h>
 #include <stdlib.h>

lib/ofp-actions.c

@@ -15,6 +15,8 @@
  */
 
 #include <config.h>
+
+#include <sys/types.h>
 #include <netinet/in.h>
 
 #include "bundle.h"

lib/ofp-ed-props.c

@@ -15,6 +15,8 @@
  */
 
 #include <config.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include "openvswitch/ofp-ed-props.h"
 #include "openvswitch/ofp-util.h"

lib/ofp-parse.c

@@ -19,6 +19,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <sys/types.h>
 #include <netinet/in.h>
 
 #include "byte-order.h"

lib/ovs-lldp.c

@@ -28,12 +28,12 @@
 
 #include <config.h>
 #include "ovs-lldp.h"
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <inttypes.h>
-#include <netinet/in.h>
 #include <stdbool.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include "openvswitch/dynamic-string.h"
 #include "flow.h"
 #include "openvswitch/list.h"

lib/ovs-router.c

@@ -18,12 +18,13 @@
 
 #include "ovs-router.h"
 
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <sys/socket.h>
 #include <net/if.h>
-#include <netinet/in.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>

lib/ovs-router.h

@@ -17,6 +17,7 @@
 #ifndef OVS_TNL_ROUTER_H
 #define OVS_TNL_ROUTER_H 1
 
+#include <sys/types.h>
 #include <netinet/in.h>
 
 #include "util.h"

lib/packets.c

@@ -16,13 +16,13 @@
 
 #include <config.h>
 #include "packets.h"
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <sys/socket.h>
-#include <netinet/in.h>
 #include <netinet/ip6.h>
 #include <netinet/icmp6.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include <netdb.h>
 #include "byte-order.h"
 #include "csum.h"

lib/route-table.c

@@ -19,6 +19,8 @@
 #include "route-table.h"
 
 #include <errno.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <arpa/inet.h>
 #include <sys/socket.h>
 #include <linux/rtnetlink.h>