From a2ed29e48c36a45e35c4e2ec63c68c8aca5111dc Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 18 Nov 2010 22:04:46 +0000
Subject: [PATCH] --- yaml --- r: 224445 b: refs/heads/master c:
 c26aed40f4fd18f86bcc6aba557cab700b129b73 h: refs/heads/master i:   224443:
 d3cf53a4d4a0717a7c056f34ae3872e125810006 v: v3

---
 [refs]                  | 2 +-
 trunk/net/core/filter.c | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 77480d025271..186eebe5dfa8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8c1592d68bc89248bfd0ee287648f41c1370d826
+refs/heads/master: c26aed40f4fd18f86bcc6aba557cab700b129b73
diff --git a/trunk/net/core/filter.c b/trunk/net/core/filter.c
index c0b68f7c8036..23e0a2a9a4de 100644
--- a/trunk/net/core/filter.c
+++ b/trunk/net/core/filter.c
@@ -37,6 +37,7 @@
 #include <asm/uaccess.h>
 #include <asm/unaligned.h>
 #include <linux/filter.h>
+#include <linux/reciprocal_div.h>
 
 enum {
 	BPF_S_RET_K = 1,
@@ -205,7 +206,7 @@ unsigned int sk_run_filter(struct sk_buff *skb, const struct sock_filter *fentry
 			A /= X;
 			continue;
 		case BPF_S_ALU_DIV_K:
-			A /= K;
+			A = reciprocal_divide(A, K);
 			continue;
 		case BPF_S_ALU_AND_X:
 			A &= X;
@@ -506,6 +507,7 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
 			/* check for division by zero */
 			if (ftest->k == 0)
 				return -EINVAL;
+			ftest->k = reciprocal_value(ftest->k);
 			break;
 		case BPF_S_LD_MEM:
 		case BPF_S_LDX_MEM: