This is a note to let you know that I've just added the patch titled
netfilter: don't reset nf_trace in nf_reset()
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
netfilter-don-t-reset-nf_trace-in-nf_reset.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 3eefcfb890381fd7072203598b5d5631ee136608 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <[email protected]>
Date: Fri, 5 Apr 2013 20:42:05 +0200
Subject: netfilter: don't reset nf_trace in nf_reset()
From: Patrick McHardy <[email protected]>
[ Upstream commit 124dff01afbdbff251f0385beca84ba1b9adda68 ]
Commit 130549fe ("netfilter: reset nf_trace in nf_reset") added code
to reset nf_trace in nf_reset(). This is wrong and unnecessary.
nf_reset() is used in the following cases:
- when passing packets up the the socket layer, at which point we want to
release all netfilter references that might keep modules pinned while
the packet is queued. nf_trace doesn't matter anymore at this point.
- when encapsulating or decapsulating IPsec packets. We want to continue
tracing these packets after IPsec processing.
- when passing packets through virtual network devices. Only devices on
that encapsulate in IPv4/v6 matter since otherwise nf_trace is not
used anymore. Its not entirely clear whether those packets should
be traced after that, however we've always done that.
- when passing packets through virtual network devices that make the
packet cross network namespace boundaries. This is the only cases
where we clearly want to reset nf_trace and is also what the
original patch intended to fix.
Add a new function nf_reset_trace() and use it in dev_forward_skb() to
fix this properly.
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/linux/skbuff.h | 8 ++++++++
net/core/dev.c | 1 +
2 files changed, 9 insertions(+)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2135,6 +2135,14 @@ static inline void nf_reset(struct sk_bu
#endif
}
+static inline void nf_reset_trace(struct sk_buff *skb)
+{
+#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
+ defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
+ skb->nf_trace = 0;
+#endif
+}
+
/* Note: This doesn't put any conntrack and bridge info in dst. */
static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src)
{
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1545,6 +1545,7 @@ int dev_forward_skb(struct net_device *d
skb->mark = 0;
secpath_reset(skb);
nf_reset(skb);
+ nf_reset_trace(skb);
return netif_rx(skb);
}
EXPORT_SYMBOL_GPL(dev_forward_skb);
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/netfilter-don-t-reset-nf_trace-in-nf_reset.patch
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