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Date: Mon, 22 Nov 2010 08:19:10 -0800
From: Randy Dunlap <randy.dunlap@...cle.com>
To: KOVACS Krisztian <hidden@...abit.hu>
CC: Patrick McHardy <kaber@...sh.net>,
Stephen Rothwell <sfr@...b.auug.org.au>,
netfilter-devel@...r.kernel.org, linux-next@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>,
netdev <netdev@...r.kernel.org>,
Balazs Scheidler <bazsi@...abit.hu>
Subject: Re: linux-next: Tree for November 18 (netfilter)
On 11/22/10 04:28, KOVACS Krisztian wrote:
> Hi,
>
> On Mon, 2010-11-22 at 13:14 +0100, KOVACS Krisztian wrote:
>> Indeed, we were missing quite a few of those ifdefs... The patch below
>> seems to fix the issue for me.
>>
>> commit ec0ac6f3e7749e25f481c1e0f75766974820fe84
>> Author: KOVACS Krisztian <hidden@...abit.hu>
>> Date: Mon Nov 22 13:07:15 2010 +0100
>
> Bah, it seems the patch got line-wrapped by my MUA, here it is again.
> Let's hope I got it right this time...
>
> commit ec0ac6f3e7749e25f481c1e0f75766974820fe84
> Author: KOVACS Krisztian <hidden@...abit.hu>
> Date: Mon Nov 22 13:07:15 2010 +0100
>
> netfilter: fix compilation when conntrack is disabled but tproxy is enabled
>
> The IPv6 tproxy patches split IPv6 defragmentation off of conntrack, but
> failed to update the #ifdef stanzas guarding the defragmentation related
> fields and code in skbuff and conntrack related code in nf_defrag_ipv6.c.
>
> This patch adds the required #ifdefs so that IPv6 tproxy can truly be used
> without connection tracking.
>
> Original report:
> http://marc.info/?l=linux-netdev&m=129010118516341&w=2
>
> Reported-by: Randy Dunlap <randy.dunlap@...cle.com>
> Signed-off-by: KOVACS Krisztian <hidden@...abit.hu>
That builds. Thanks.
Acked-by: Randy Dunlap <randy.dunlap@...cle.com>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index e6ba898..4f2db79 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -255,6 +255,11 @@ typedef unsigned int sk_buff_data_t;
> typedef unsigned char *sk_buff_data_t;
> #endif
>
> +#if defined(CONFIG_NF_DEFRAG_IPV4) || defined(CONFIG_NF_DEFRAG_IPV4_MODULE) || \
> + defined(CONFIG_NF_DEFRAG_IPV6) || defined(CONFIG_NF_DEFRAG_IPV6_MODULE)
> +#define NET_SKBUFF_NF_DEFRAG_NEEDED 1
> +#endif
> +
> /**
> * struct sk_buff - socket buffer
> * @next: Next buffer in list
> @@ -362,6 +367,8 @@ struct sk_buff {
> void (*destructor)(struct sk_buff *skb);
> #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> struct nf_conntrack *nfct;
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> struct sk_buff *nfct_reasm;
> #endif
> #ifdef CONFIG_BRIDGE_NETFILTER
> @@ -2051,6 +2058,8 @@ static inline void nf_conntrack_get(struct nf_conntrack *nfct)
> if (nfct)
> atomic_inc(&nfct->use);
> }
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> static inline void nf_conntrack_get_reasm(struct sk_buff *skb)
> {
> if (skb)
> @@ -2079,6 +2088,8 @@ static inline void nf_reset(struct sk_buff *skb)
> #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> nf_conntrack_put(skb->nfct);
> skb->nfct = NULL;
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> nf_conntrack_put_reasm(skb->nfct_reasm);
> skb->nfct_reasm = NULL;
> #endif
> @@ -2095,6 +2106,8 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src)
> dst->nfct = src->nfct;
> nf_conntrack_get(src->nfct);
> dst->nfctinfo = src->nfctinfo;
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> dst->nfct_reasm = src->nfct_reasm;
> nf_conntrack_get_reasm(src->nfct_reasm);
> #endif
> @@ -2108,6 +2121,8 @@ static inline void nf_copy(struct sk_buff *dst, const struct sk_buff *src)
> {
> #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> nf_conntrack_put(dst->nfct);
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> nf_conntrack_put_reasm(dst->nfct_reasm);
> #endif
> #ifdef CONFIG_BRIDGE_NETFILTER
> diff --git a/include/net/netfilter/ipv6/nf_conntrack_ipv6.h b/include/net/netfilter/ipv6/nf_conntrack_ipv6.h
> index 1ee717e..a4c9936 100644
> --- a/include/net/netfilter/ipv6/nf_conntrack_ipv6.h
> +++ b/include/net/netfilter/ipv6/nf_conntrack_ipv6.h
> @@ -7,16 +7,6 @@ extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6;
> extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6;
> extern struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6;
>
> -extern int nf_ct_frag6_init(void);
> -extern void nf_ct_frag6_cleanup(void);
> -extern struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user);
> -extern void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
> - struct net_device *in,
> - struct net_device *out,
> - int (*okfn)(struct sk_buff *));
> -
> -struct inet_frags_ctl;
> -
> #include <linux/sysctl.h>
> extern struct ctl_table nf_ct_ipv6_sysctl_table[];
>
> diff --git a/include/net/netfilter/ipv6/nf_defrag_ipv6.h b/include/net/netfilter/ipv6/nf_defrag_ipv6.h
> index 94dd54d..fd79c9a 100644
> --- a/include/net/netfilter/ipv6/nf_defrag_ipv6.h
> +++ b/include/net/netfilter/ipv6/nf_defrag_ipv6.h
> @@ -3,4 +3,14 @@
>
> extern void nf_defrag_ipv6_enable(void);
>
> +extern int nf_ct_frag6_init(void);
> +extern void nf_ct_frag6_cleanup(void);
> +extern struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user);
> +extern void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
> + struct net_device *in,
> + struct net_device *out,
> + int (*okfn)(struct sk_buff *));
> +
> +struct inet_frags_ctl;
> +
> #endif /* _NF_DEFRAG_IPV6_H */
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index 104f844..74ebf4b 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -380,6 +380,8 @@ static void skb_release_head_state(struct sk_buff *skb)
> }
> #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> nf_conntrack_put(skb->nfct);
> +#endif
> +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
> nf_conntrack_put_reasm(skb->nfct_reasm);
> #endif
> #ifdef CONFIG_BRIDGE_NETFILTER
> diff --git a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
> index 99abfb5..97c5b21 100644
> --- a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
> +++ b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
> @@ -19,13 +19,15 @@
>
> #include <linux/netfilter_ipv6.h>
> #include <linux/netfilter_bridge.h>
> +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> #include <net/netfilter/nf_conntrack.h>
> #include <net/netfilter/nf_conntrack_helper.h>
> #include <net/netfilter/nf_conntrack_l4proto.h>
> #include <net/netfilter/nf_conntrack_l3proto.h>
> #include <net/netfilter/nf_conntrack_core.h>
> -#include <net/netfilter/nf_conntrack_zones.h>
> #include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
> +#endif
> +#include <net/netfilter/nf_conntrack_zones.h>
> #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
>
> static enum ip6_defrag_users nf_ct6_defrag_user(unsigned int hooknum,
> @@ -33,8 +35,10 @@ static enum ip6_defrag_users nf_ct6_defrag_user(unsigned int hooknum,
> {
> u16 zone = NF_CT_DEFAULT_ZONE;
>
> +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> if (skb->nfct)
> zone = nf_ct_zone((struct nf_conn *)skb->nfct);
> +#endif
>
> #ifdef CONFIG_BRIDGE_NETFILTER
> if (skb->nf_bridge &&
> @@ -56,9 +60,11 @@ static unsigned int ipv6_defrag(unsigned int hooknum,
> {
> struct sk_buff *reasm;
>
> +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> /* Previously seen (loopback)? */
> if (skb->nfct && !nf_ct_is_template((struct nf_conn *)skb->nfct))
> return NF_ACCEPT;
> +#endif
>
> reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(hooknum, skb));
> /* queued */
>
>
--
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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