From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 07/11] netfilter: nf_flow_table: ignore DF bit setting
Date: Thu, 23 May 2019 23:35:43 +0200 [thread overview]
Message-ID: <20190523213547.15523-8-pablo@netfilter.org> (raw)
In-Reply-To: <20190523213547.15523-1-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Its irrelevant if the DF bit is set or not, we must pass packet to
stack in either case.
If the DF bit is set, we must pass it to stack so the appropriate
ICMP error can be generated.
If the DF is not set, we must pass it to stack for fragmentation.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_flow_table_ip.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 0d603e20b519..bfd44db9f214 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c
@@ -243,8 +243,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
rt = (struct rtable *)flow->tuplehash[dir].tuple.dst_cache;
outdev = rt->dst.dev;
- if (unlikely(nf_flow_exceeds_mtu(skb, flow->tuplehash[dir].tuple.mtu)) &&
- (ip_hdr(skb)->frag_off & htons(IP_DF)) != 0)
+ if (unlikely(nf_flow_exceeds_mtu(skb, flow->tuplehash[dir].tuple.mtu)))
return NF_ACCEPT;
if (skb_try_make_writable(skb, sizeof(*iph)))
--
2.11.0
next prev parent reply other threads:[~2019-05-23 21:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-23 21:35 [PATCH 00/11] Netfilter/IPVS fixes for net Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 01/11] netfilter: nf_tables: fix oops during rule dump Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 02/11] netfilter: nf_queue: fix reinject verdict handling Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 03/11] netfilter: nft_fib: Fix existence check support Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 04/11] ipvs: Fix use-after-free in ip_vs_in Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 05/11] selftests: netfilter: missing error check when setting up veth interface Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 06/11] netfilter: nat: fix udp checksum corruption Pablo Neira Ayuso
2019-05-23 21:35 ` Pablo Neira Ayuso [this message]
2019-05-23 21:35 ` [PATCH 08/11] netfilter: nft_flow_offload: set liberal tracking mode for tcp Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 09/11] netfilter: nft_flow_offload: don't offload when sequence numbers need adjustment Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 10/11] netfilter: nft_flow_offload: IPCB is only valid for ipv4 family Pablo Neira Ayuso
2019-05-23 21:35 ` [PATCH 11/11] selftests: netfilter: add flowtable test script Pablo Neira Ayuso
2019-05-23 21:45 ` [PATCH 00/11] Netfilter/IPVS fixes for net David Miller
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