[NET]: div64_64 consolidate (rev3)

Here is the current version of the 64 bit divide common code.

Signed-off-by: Stephen Hemminger <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/asm-arm/div64.h

···
 #define __ASM_ARM_DIV64
 
 #include <asm/system.h>
+#include <linux/types.h>
 
 /*
  * The semantics of do_div() are:
···
 })
 
 #endif
+
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 
 #endif

include/asm-generic/div64.h

···
 	__rem;							\
  })
 
+static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+	return dividend / divisor;
+}
+
 #elif BITS_PER_LONG == 32
 
 extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
···
 		__rem = __div64_32(&(n), __base);	\
 	__rem;						\
  })
+
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 
 #else /* BITS_PER_LONG == ?? */
 

include/asm-i386/div64.h

···
 #ifndef __I386_DIV64
 #define __I386_DIV64
 
+#include <linux/types.h>
+
 /*
  * do_div() is NOT a C function. It wants to return
  * two values (the quotient and the remainder), but
···
 	return dum2;
 
 }
+
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 #endif

include/asm-m68k/div64.h

···
 #ifndef _M68K_DIV64_H
 #define _M68K_DIV64_H
 
+#include <linux/types.h>
+
 /* n = n / base; return rem; */
 
 #define do_div(n, base) ({					\
···
 	__rem;							\
 })
 
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 #endif /* _M68K_DIV64_H */

include/asm-mips/div64.h

···
 /*
  * Copyright (C) 2000, 2004  Maciej W. Rozycki
- * Copyright (C) 2003 Ralf Baechle
+ * Copyright (C) 2003, 07 Ralf Baechle ([e-mail])
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
···
  */
 #ifndef _ASM_DIV64_H
 #define _ASM_DIV64_H
+
+#include <linux/types.h>
 
 #if (_MIPS_SZLONG == 32)
 
···
 	__quot = __quot << 32 | __low; \
 	(n) = __quot; \
 	__mod; })
+
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 #endif /* (_MIPS_SZLONG == 32) */
 
 #if (_MIPS_SZLONG == 64)
···
 	\
 	(n) = __quot; \
 	__mod; })
+
+static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+	return dividend / divisor;
+}
 
 #endif /* (_MIPS_SZLONG == 64) */
 

include/asm-um/div64.h

···
 
 #include "asm/arch/div64.h"
 
+extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
 #endif

include/asm-xtensa/div64.h

···
 #ifndef _XTENSA_DIV64_H
 #define _XTENSA_DIV64_H
 
+#include <linux/types.h>
+
 #define do_div(n,base) ({ \
 	int __res = n % ((unsigned int) base); \
 	n /= (unsigned int) base; \
 	__res; })
 
+static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+	return dividend / divisor;
+}
 #endif

lib/Makefile

···
 
 lib-y := ctype.o string.o vsprintf.o cmdline.o \
 	 rbtree.o radix-tree.o dump_stack.o \
-	 idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
+	 idr.o int_sqrt.o bitmap.o extable.o prio_tree.o \
 	 sha1.o irq_regs.o reciprocal_div.o
 
 lib-$(CONFIG_MMU) += ioremap.o
···
 
 lib-y	+= kobject.o kref.o kobject_uevent.o klist.o
 
-obj-y += sort.o parser.o halfmd4.o debug_locks.o random32.o bust_spinlocks.o
+obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
+	 bust_spinlocks.o
 
 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 CFLAGS_kobject.o += -DDEBUG

lib/div64.c

···
 
 EXPORT_SYMBOL(__div64_32);
 
+/* 64bit divisor, dividend and result. dynamic precision */
+uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+	uint32_t d = divisor;
+
+	if (divisor > 0xffffffffULL) {
+		unsigned int shift = fls(divisor >> 32);
+
+		d = divisor >> shift;
+		dividend >>= shift;
+	}
+
+	/* avoid 64 bit division if possible */
+	if (dividend >> 32)
+		do_div(dividend, d);
+	else
+		dividend = (uint32_t) dividend / d;
+
+	return dividend;
+}
+EXPORT_SYMBOL(div64_64);
+
 #endif /* BITS_PER_LONG == 32 */

net/ipv4/tcp_cubic.c

···
 module_param(tcp_friendliness, int, 0644);
 MODULE_PARM_DESC(tcp_friendliness, "turn on/off tcp friendliness");
 
-#include <asm/div64.h>
-
 /* BIC TCP Parameters */
 struct bictcp {
 	u32	cnt;		/* increase cwnd by 1 after ACKs */
···
 	bictcp_reset(inet_csk_ca(sk));
 	if (initial_ssthresh)
 		tcp_sk(sk)->snd_ssthresh = initial_ssthresh;
-}
-
-/* 64bit divisor, dividend and result. dynamic precision */
-static inline u_int64_t div64_64(u_int64_t dividend, u_int64_t divisor)
-{
-	u_int32_t d = divisor;
-
-	if (divisor > 0xffffffffULL) {
-		unsigned int shift = fls(divisor >> 32);
-
-		d = divisor >> shift;
-		dividend >>= shift;
-	}
-
-	/* avoid 64 bit division if possible */
-	if (dividend >> 32)
-		do_div(dividend, d);
-	else
-		dividend = (uint32_t) dividend / d;
-
-	return dividend;
 }
 
 /*

net/ipv4/tcp_yeah.c

···
 		yeah->pkts_acked = pkts_acked;
 }
 
-/* 64bit divisor, dividend and result. dynamic precision */
-static inline u64 div64_64(u64 dividend, u64 divisor)
-{
-	u32 d = divisor;
-
-	if (divisor > 0xffffffffULL) {
-		unsigned int shift = fls(divisor >> 32);
-
-		d = divisor >> shift;
-		dividend >>= shift;
-	}
-
-	/* avoid 64 bit division if possible */
-	if (dividend >> 32)
-		do_div(dividend, d);
-	else
-		dividend = (u32) dividend / d;
-
-	return dividend;
-}
-
 static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack,
 				 u32 seq_rtt, u32 in_flight, int flag)
 {

net/ipv4/tcp_yeah.h

···
 #include <linux/module.h>
 #include <linux/skbuff.h>
 #include <linux/inet_diag.h>
+#include <asm/div64.h>
 
 #include <net/tcp.h>
 

net/netfilter/xt_connbytes.c

···
 MODULE_DESCRIPTION("iptables match for matching number of pkts/bytes per connection");
 MODULE_ALIAS("ipt_connbytes");
 
-/* 64bit divisor, dividend and result. dynamic precision */
-static u_int64_t div64_64(u_int64_t dividend, u_int64_t divisor)
-{
-	u_int32_t d = divisor;
-
-	if (divisor > 0xffffffffULL) {
-		unsigned int shift = fls(divisor >> 32);
-
-		d = divisor >> shift;
-		dividend >>= shift;
-	}
-
-	do_div(dividend, d);
-	return dividend;
-}
-
 static int
 match(const struct sk_buff *skb,
       const struct net_device *in,