All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH net-2.6.25 1/8] Create ipv4_is_<type>(__be32 addr) functions
@ 2007-12-13 23:38 ` Joe Perches
  2007-12-16 21:42   ` David Miller
  2007-12-17 22:37   ` Jan Engelhardt
  0 siblings, 2 replies; 28+ messages in thread
From: Joe Perches @ 2007-12-13 23:38 UTC (permalink / raw)
  To: netdev; +Cc: linux-kernel

Change IPV4 specific macros LOOPBACK MULTICAST LOCAL_MCAST BADCLASS and ZERONET
macros to inline functions ipv4_is_<type>(__be32 addr)

Adds type safety and arguably some readability.

Changes since last submission:

Removed ipv4_addr_octets function
Used hex constants
Converted recently added rfc3330 macros

Signed-off-by: Joe Perches <joe@perches.com>
---
 include/linux/in.h |   87 ++++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 74 insertions(+), 13 deletions(-)

diff --git a/include/linux/in.h b/include/linux/in.h
index a8f00ca..f8d6073 100644
--- a/include/linux/in.h
+++ b/include/linux/in.h
@@ -246,21 +246,82 @@ struct sockaddr_in {
 #include <asm/byteorder.h> 
 
 #ifdef __KERNEL__
-/* Some random defines to make it easier in the kernel.. */
-#define LOOPBACK(x)	(((x) & htonl(0xff000000)) == htonl(0x7f000000))
-#define MULTICAST(x)	(((x) & htonl(0xf0000000)) == htonl(0xe0000000))
-#define BADCLASS(x)	(((x) & htonl(0xf0000000)) == htonl(0xf0000000))
-#define ZERONET(x)	(((x) & htonl(0xff000000)) == htonl(0x00000000))
-#define LOCAL_MCAST(x)	(((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
+
+static inline bool ipv4_is_loopback(__be32 addr)
+{
+	return (addr & htonl(0xff000000)) == htonl(0x7f000000);
+}
+
+static inline bool ipv4_is_multicast(__be32 addr)
+{
+	return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
+}
+
+static inline bool ipv4_is_local_multicast(__be32 addr)
+{
+	return (addr & htonl(0xffffff00)) == htonl(0xe0000000);
+}
+
+static inline bool ipv4_is_badclass(__be32 addr)
+{
+	return (addr & htonl(0xf0000000)) == htonl(0xf0000000);
+}
+
+static inline bool ipv4_is_zeronet(__be32 addr)
+{
+	return (addr & htonl(0xff000000)) == htonl(0x00000000);
+}
+
+#define LOOPBACK(x)		ipv4_is_loopback(x)
+#define MULTICAST(x)		ipv4_is_multicast(x)
+#define BADCLASS(x)		ipv4_is_badclass(x)
+#define ZERONET(x)		ipv4_is_zeronet(x)
+#define LOCAL_MCAST(x)		ipv4_is_local_multicast(x)
 
 /* Special-Use IPv4 Addresses (RFC3330) */
-#define PRIVATE_10(x)	(((x) & htonl(0xff000000)) == htonl(0x0A000000))
-#define LINKLOCAL_169(x) (((x) & htonl(0xffff0000)) == htonl(0xA9FE0000))
-#define PRIVATE_172(x)	(((x) & htonl(0xfff00000)) == htonl(0xAC100000))
-#define TEST_192(x)	(((x) & htonl(0xffffff00)) == htonl(0xC0000200))
-#define ANYCAST_6TO4(x)	(((x) & htonl(0xffffff00)) == htonl(0xC0586300))
-#define PRIVATE_192(x)	(((x) & htonl(0xffff0000)) == htonl(0xC0A80000))
-#define TEST_198(x)	(((x) & htonl(0xfffe0000)) == htonl(0xC6120000))
+
+static inline bool ipv4_is_private_10(__be32 addr)
+{
+	return (addr & htonl(0xff000000)) == htonl(0x0a000000);
+}
+
+static inline bool ipv4_is_private_172(__be32 addr)
+{
+	return (addr & htonl(0xfff00000)) == htonl(0xac100000);
+}
+
+static inline bool ipv4_is_private_192(__be32 addr)
+{
+	return (addr & htonl(0xffff0000)) == htonl(0xc0a80000);
+}
+
+static inline bool ipv4_is_linklocal_169(__be32 addr)
+{
+	return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000);
+}
+
+static inline bool ipv4_is_anycast_6to4(__be32 addr)
+{
+	return (addr & htonl(0xffffff00)) == htonl(0xc0586300);
+}
+
+static inline bool ipv4_is_test_192(__be32 addr)
+{
+	return (addr & htonl(0xffffff00)) == htonl(0xc0000200);
+}
+
+static inline bool ipv4_is_test_198(__be32 addr)
+{
+	return (addr & htonl(0xfffe0000)) == htonl(0xc6120000);
+}
 #endif
 
+#define PRIVATE_10(x)		ipv4_is_private_10(x)
+#define LINKLOCAL_169(x)	ipv4_is_linklocal_169(x)
+#define PRIVATE_172(x)		ipv4_is_private_172(x)
+#define TEST_192(x)		ipv4_is_test_192(x)
+#define ANYCAST_6TO4(x)		ipv4_is_anycast_6to4(x)
+#define PRIVATE_192(x)		ipv4_is_private_192(x)
+#define TEST_198(x)		ipv4_is_test_198(x)
+
 #endif	/* _LINUX_IN_H */
-- 
1.5.3.7.949.g2221a6


^ permalink raw reply related	[flat|nested] 28+ messages in thread

end of thread, other threads:[~2007-12-17 23:03 UTC | newest]

Thread overview: 28+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-12-13 23:38 [PATCH net-2.6.25 1/8] Create ipv4_is_<type>(__be32 addr) functions Joe Perches
2007-12-13 23:38 ` Joe Perches
2007-12-16 21:42   ` David Miller
2007-12-17 22:37   ` Jan Engelhardt
2007-12-17 22:41     ` David Miller
2007-12-17 22:42     ` Joe Perches
2007-12-17 22:43     ` David Miller
2007-12-17 23:02       ` Jan Engelhardt
2007-12-13 23:38 ` [PATCH net-2.6.25 2/8] include/net: Use ipv4_is_<type> Joe Perches
2007-12-13 23:38   ` Joe Perches
2007-12-16 21:43     ` David Miller
2007-12-13 23:38 ` [PATCH net-2.6.25 3/8] net/core: " Joe Perches
2007-12-13 23:38   ` Joe Perches
2007-12-16 21:44     ` David Miller
2007-12-13 23:38 ` [PATCH net-2.6.25 4/8] net/ipv4: " Joe Perches
2007-12-13 23:38   ` Joe Perches
2007-12-16 21:45     ` David Miller
2007-12-13 23:38 ` [PATCH net-2.6.25 5/8] net/netfilter: " Joe Perches
2007-12-13 23:38   ` Joe Perches
2007-12-16 21:46     ` David Miller
2007-12-13 23:38 ` [PATCH net-2.6.25 6/8] sctp: " Joe Perches
2007-12-13 23:38   ` Joe Perches
2007-12-14 19:11     ` Vlad Yasevich
2007-12-14 19:14       ` David Miller
2007-12-14 19:17         ` Vlad Yasevich
2007-12-16 21:47     ` David Miller
2007-12-13 23:39 ` [ofa-general] [PATCH net-2.6.25 7/8] drivers/infiniband: " Joe Perches
2007-12-13 23:39   ` Joe Perches
2007-12-13 23:39   ` [ofa-general] " Joe Perches
2007-12-16 21:47     ` David Miller
2007-12-13 23:39 ` [PATCH net-2.6.25 8/8] Remove unused IPV4TYPE macros Joe Perches
2007-12-13 23:39   ` Joe Perches
2007-12-13 23:39   ` Joe Perches
2007-12-16 21:48     ` David Miller
2007-12-17  4:01       ` Joe Perches
2007-12-17  4:28         ` David Miller

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.