From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org
Subject: [PATCH net 4/9] netfilter: conntrack: avoid misleading 'invalid' in log message
Date: Sat, 6 Mar 2021 13:12:18 +0100 [thread overview]
Message-ID: <20210306121223.28711-5-pablo@netfilter.org> (raw)
In-Reply-To: <20210306121223.28711-1-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
The packet is not flagged as invalid: conntrack will accept it and
its associated with the conntrack entry.
This happens e.g. when receiving a retransmitted SYN in SYN_RECV state.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_conntrack_proto_tcp.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 1d7e1c595546..ec23330687a5 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -982,8 +982,10 @@ int nf_conntrack_tcp_packet(struct nf_conn *ct,
IP_CT_EXP_CHALLENGE_ACK;
}
spin_unlock_bh(&ct->lock);
- nf_ct_l4proto_log_invalid(skb, ct, "invalid packet ignored in "
- "state %s ", tcp_conntrack_names[old_state]);
+ nf_ct_l4proto_log_invalid(skb, ct,
+ "packet (index %d) in dir %d ignored, state %s",
+ index, dir,
+ tcp_conntrack_names[old_state]);
return NF_ACCEPT;
case TCP_CONNTRACK_MAX:
/* Special case for SYN proxy: when the SYN to the server or
--
2.20.1
next prev parent reply other threads:[~2021-03-06 12:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-06 12:12 [PATCH net 0/9] Netfilter fixes for net Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 1/9] uapi: nfnetlink_cthelper.h: fix userspace compilation error Pablo Neira Ayuso
2021-03-07 1:10 ` patchwork-bot+netdevbpf
2021-03-06 12:12 ` [PATCH net 2/9] netfilter: conntrack: Remove a double space in a log message Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 3/9] netfilter: nf_nat: undo erroneous tcp edemux lookup Pablo Neira Ayuso
2021-03-06 14:49 ` Mika Penttilä
2021-03-06 16:10 ` Mika Penttilä
2021-03-06 12:12 ` Pablo Neira Ayuso [this message]
2021-03-06 12:12 ` [PATCH net 5/9] selftests: netfilter: test nat port clash resolution interaction with tcp early demux Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 6/9] netfilter: x_tables: gpf inside xt_find_revision() Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 7/9] netfilter: nftables: disallow updates on table ownership Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 8/9] netfilter: nftables: fix possible double hook unregistration with table owner Pablo Neira Ayuso
2021-03-06 12:12 ` [PATCH net 9/9] netfilter: nftables: bogus check for netlink portID " Pablo Neira Ayuso
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