From 3927f2e8f9afa3424bb51ca81f7abac01ffd0005 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@linux-foundation.org>
Date: Sun, 25 Mar 2007 19:54:23 -0700
Subject: [NET]: div64_64 consolidate (rev3)

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

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/ipv4/tcp_cubic.c | 23 -----------------------
 net/ipv4/tcp_yeah.c  | 21 ---------------------
 net/ipv4/tcp_yeah.h  |  1 +
 3 files changed, 1 insertion(+), 44 deletions(-)

(limited to 'net/ipv4')

diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 9a582fb4ef9..6f08adbda54 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -51,8 +51,6 @@ MODULE_PARM_DESC(bic_scale, "scale (scaled by 1024) value for bic function (bic_
 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 */
@@ -93,27 +91,6 @@ static void bictcp_init(struct sock *sk)
 		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;
-}
-
 /*
  * calculate the cubic root of x using Newton-Raphson
  */
diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c
index 815e020e98f..18355a2608e 100644
--- a/net/ipv4/tcp_yeah.c
+++ b/net/ipv4/tcp_yeah.c
@@ -73,27 +73,6 @@ static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked)
 		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)
 {
diff --git a/net/ipv4/tcp_yeah.h b/net/ipv4/tcp_yeah.h
index b3255dba4e2..a62d82038fd 100644
--- a/net/ipv4/tcp_yeah.h
+++ b/net/ipv4/tcp_yeah.h
@@ -2,6 +2,7 @@
 #include <linux/module.h>
 #include <linux/skbuff.h>
 #include <linux/inet_diag.h>
+#include <asm/div64.h>
 
 #include <net/tcp.h>
 
-- 
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