From: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, yoshfuji@linux-ipv6.org, jengelh@medozas.de
Subject: [PATCH] netfilter/IPv6: fix DSCP mangle code
Date: Fri, 22 Apr 2011 16:02:39 +0900 [thread overview]
Message-ID: <1303455759.2023.39.camel@nausicaa> (raw)
The mask indicates the bits one wants to zero out, so it needs to be
inverted before applying to the original TOS field.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
---
diff -urNp linux-2.6.37-orig/net/netfilter/xt_DSCP.c linux-2.6.37/net/netfilter/xt_DSCP.c
--- linux-2.6.37-orig/net/netfilter/xt_DSCP.c 2011-01-05 09:50:19.000000000 +0900
+++ linux-2.6.37/net/netfilter/xt_DSCP.c 2011-04-21 16:01:25.801890733 +0900
@@ -99,7 +99,7 @@ tos_tg6(struct sk_buff *skb, const struc
u_int8_t orig, nv;
orig = ipv6_get_dsfield(iph);
- nv = (orig & info->tos_mask) ^ info->tos_value;
+ nv = (orig & ~info->tos_mask) ^ info->tos_value;
if (orig != nv) {
if (!skb_make_writable(skb, sizeof(struct iphdr)))
next reply other threads:[~2011-04-22 7:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 7:02 Fernando Luis Vazquez Cao [this message]
2011-04-22 7:08 ` [PATCH] netfilter/IPv6: fix DSCP mangle code David Miller
2011-04-22 7:29 ` Fernando Luis Vazquez Cao
2011-04-22 7:19 ` [PATCH] netfilter/IPv6: initialize TOS field in REJECT target module Fernando Luis Vazquez Cao
2011-04-22 7:34 ` Eric Dumazet
2011-04-22 7:47 ` Fernando Luis Vazquez Cao
2011-04-22 8:06 ` Eric Dumazet
2011-04-22 8:11 ` Fernando Luis Vazquez Cao
2011-04-22 8:37 ` Eric Dumazet
2011-04-26 1:13 ` Pablo Neira Ayuso
2011-04-26 1:26 ` Fernando Luis Vazquez Cao
2011-04-26 5:17 ` David Miller
2011-04-26 5:25 ` Fernando Luis Vazquez Cao
2011-04-26 15:34 ` Pablo Neira Ayuso
2011-04-26 15:35 ` Pablo Neira Ayuso
2011-04-27 4:21 ` Fernando Luis Vazquez Cao
2011-05-06 8:27 ` Fernando Luis Vázquez Cao
2011-05-06 10:38 ` Pablo Neira Ayuso
2011-05-06 10:45 ` Jan Engelhardt
2011-04-26 5:17 ` David Miller
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