From 1ed2f73d90fb49bcf5704aee7e9084adb882bfc5 Mon Sep 17 00:00:00 2001 From: Fernando Luis Vazquez Cao Date: Tue, 10 May 2011 10:00:21 +0200 Subject: [PATCH] netfilter: IPv6: fix DSCP mangle code 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 Signed-off-by: Pablo Neira Ayuso --- net/netfilter/xt_DSCP.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/xt_DSCP.c b/net/netfilter/xt_DSCP.c index 0a229191e55b..ae8271652efa 100644 --- a/net/netfilter/xt_DSCP.c +++ b/net/netfilter/xt_DSCP.c @@ -99,7 +99,7 @@ tos_tg6(struct sk_buff *skb, const struct xt_action_param *par) 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))) -- 2.20.1