* [PATCH] netfilter: use actual socket sk for REJECT action
@ 2020-11-21 11:11 Jan Engelhardt
2020-12-01 8:49 ` Pablo Neira Ayuso
0 siblings, 1 reply; 6+ messages in thread
From: Jan Engelhardt @ 2020-11-21 11:11 UTC (permalink / raw)
To: pablo; +Cc: netfilter-devel, jengelh
True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_
actually make use of state->sk when possible, such as in the REJECT
modules.
Reported-by: Minqiang Chen <ptpt52@gmail.com>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
---
Compile-tested only.
As 46d6c5ae9 has made its way into stable, maybe this one shall too.
include/net/netfilter/ipv4/nf_reject.h | 4 ++--
include/net/netfilter/ipv6/nf_reject.h | 5 ++---
net/ipv4/netfilter/ipt_REJECT.c | 3 ++-
net/ipv4/netfilter/nf_reject_ipv4.c | 6 +++---
net/ipv4/netfilter/nft_reject_ipv4.c | 3 ++-
net/ipv6/netfilter/ip6t_REJECT.c | 2 +-
net/ipv6/netfilter/nf_reject_ipv6.c | 5 +++--
net/ipv6/netfilter/nft_reject_ipv6.c | 3 ++-
net/netfilter/nft_reject_inet.c | 6 ++++--
9 files changed, 21 insertions(+), 16 deletions(-)
diff --git include/net/netfilter/ipv4/nf_reject.h include/net/netfilter/ipv4/nf_reject.h
index 40e0e0623f46..d8207a82d761 100644
--- include/net/netfilter/ipv4/nf_reject.h
+++ include/net/netfilter/ipv4/nf_reject.h
@@ -8,8 +8,8 @@
#include <net/netfilter/nf_reject.h>
void nf_send_unreach(struct sk_buff *skb_in, int code, int hook);
-void nf_send_reset(struct net *net, struct sk_buff *oldskb, int hook);
-
+void nf_send_reset(struct net *net, struct sock *, struct sk_buff *oldskb,
+ int hook);
const struct tcphdr *nf_reject_ip_tcphdr_get(struct sk_buff *oldskb,
struct tcphdr *_oth, int hook);
struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
diff --git include/net/netfilter/ipv6/nf_reject.h include/net/netfilter/ipv6/nf_reject.h
index 4a3ef9ebdf6f..86e87bc2c516 100644
--- include/net/netfilter/ipv6/nf_reject.h
+++ include/net/netfilter/ipv6/nf_reject.h
@@ -7,9 +7,8 @@
void nf_send_unreach6(struct net *net, struct sk_buff *skb_in, unsigned char code,
unsigned int hooknum);
-
-void nf_send_reset6(struct net *net, struct sk_buff *oldskb, int hook);
-
+void nf_send_reset6(struct net *net, struct sock *sk, struct sk_buff *oldskb,
+ int hook);
const struct tcphdr *nf_reject_ip6_tcphdr_get(struct sk_buff *oldskb,
struct tcphdr *otcph,
unsigned int *otcplen, int hook);
diff --git net/ipv4/netfilter/ipt_REJECT.c net/ipv4/netfilter/ipt_REJECT.c
index e16b98ee6266..4b8840734762 100644
--- net/ipv4/netfilter/ipt_REJECT.c
+++ net/ipv4/netfilter/ipt_REJECT.c
@@ -56,7 +56,8 @@ reject_tg(struct sk_buff *skb, const struct xt_action_param *par)
nf_send_unreach(skb, ICMP_PKT_FILTERED, hook);
break;
case IPT_TCP_RESET:
- nf_send_reset(xt_net(par), skb, hook);
+ nf_send_reset(xt_net(par), par->state->sk, skb, hook);
+ break;
case IPT_ICMP_ECHOREPLY:
/* Doesn't happen. */
break;
diff --git net/ipv4/netfilter/nf_reject_ipv4.c net/ipv4/netfilter/nf_reject_ipv4.c
index 93b07739807b..efe14a6a5d9b 100644
--- net/ipv4/netfilter/nf_reject_ipv4.c
+++ net/ipv4/netfilter/nf_reject_ipv4.c
@@ -112,7 +112,8 @@ static int nf_reject_fill_skb_dst(struct sk_buff *skb_in)
}
/* Send RST reply */
-void nf_send_reset(struct net *net, struct sk_buff *oldskb, int hook)
+void nf_send_reset(struct net *net, struct sock *sk, struct sk_buff *oldskb,
+ int hook)
{
struct net_device *br_indev __maybe_unused;
struct sk_buff *nskb;
@@ -144,8 +145,7 @@ void nf_send_reset(struct net *net, struct sk_buff *oldskb, int hook)
niph = nf_reject_iphdr_put(nskb, oldskb, IPPROTO_TCP,
ip4_dst_hoplimit(skb_dst(nskb)));
nf_reject_ip_tcphdr_put(nskb, oldskb, oth);
-
- if (ip_route_me_harder(net, nskb->sk, nskb, RTN_UNSPEC))
+ if (ip_route_me_harder(net, sk, nskb, RTN_UNSPEC))
goto free_nskb;
niph = ip_hdr(nskb);
diff --git net/ipv4/netfilter/nft_reject_ipv4.c net/ipv4/netfilter/nft_reject_ipv4.c
index e408f813f5d8..ff437e4ed6db 100644
--- net/ipv4/netfilter/nft_reject_ipv4.c
+++ net/ipv4/netfilter/nft_reject_ipv4.c
@@ -27,7 +27,8 @@ static void nft_reject_ipv4_eval(const struct nft_expr *expr,
nf_send_unreach(pkt->skb, priv->icmp_code, nft_hook(pkt));
break;
case NFT_REJECT_TCP_RST:
- nf_send_reset(nft_net(pkt), pkt->skb, nft_hook(pkt));
+ nf_send_reset(nft_net(pkt), pkt->xt.state->sk, pkt->skb,
+ nft_hook(pkt));
break;
default:
break;
diff --git net/ipv6/netfilter/ip6t_REJECT.c net/ipv6/netfilter/ip6t_REJECT.c
index 3ac5485049f0..a35019d2e480 100644
--- net/ipv6/netfilter/ip6t_REJECT.c
+++ net/ipv6/netfilter/ip6t_REJECT.c
@@ -61,7 +61,7 @@ reject_tg6(struct sk_buff *skb, const struct xt_action_param *par)
/* Do nothing */
break;
case IP6T_TCP_RESET:
- nf_send_reset6(net, skb, xt_hooknum(par));
+ nf_send_reset6(net, par->state->sk, skb, xt_hooknum(par));
break;
case IP6T_ICMP6_POLICY_FAIL:
nf_send_unreach6(net, skb, ICMPV6_POLICY_FAIL, xt_hooknum(par));
diff --git net/ipv6/netfilter/nf_reject_ipv6.c net/ipv6/netfilter/nf_reject_ipv6.c
index 4aef6baaa55e..8b145f2a2841 100644
--- net/ipv6/netfilter/nf_reject_ipv6.c
+++ net/ipv6/netfilter/nf_reject_ipv6.c
@@ -141,7 +141,8 @@ static int nf_reject6_fill_skb_dst(struct sk_buff *skb_in)
return 0;
}
-void nf_send_reset6(struct net *net, struct sk_buff *oldskb, int hook)
+void nf_send_reset6(struct net *net, struct sock *sk, struct sk_buff *oldskb,
+ int hook)
{
struct net_device *br_indev __maybe_unused;
struct sk_buff *nskb;
@@ -233,7 +234,7 @@ void nf_send_reset6(struct net *net, struct sk_buff *oldskb, int hook)
dev_queue_xmit(nskb);
} else
#endif
- ip6_local_out(net, nskb->sk, nskb);
+ ip6_local_out(net, sk, nskb);
}
EXPORT_SYMBOL_GPL(nf_send_reset6);
diff --git net/ipv6/netfilter/nft_reject_ipv6.c net/ipv6/netfilter/nft_reject_ipv6.c
index c1098a1968e1..7969d1f3018d 100644
--- net/ipv6/netfilter/nft_reject_ipv6.c
+++ net/ipv6/netfilter/nft_reject_ipv6.c
@@ -28,7 +28,8 @@ static void nft_reject_ipv6_eval(const struct nft_expr *expr,
nft_hook(pkt));
break;
case NFT_REJECT_TCP_RST:
- nf_send_reset6(nft_net(pkt), pkt->skb, nft_hook(pkt));
+ nf_send_reset6(nft_net(pkt), pkt->xt.state->sk, pkt->skb,
+ nft_hook(pkt));
break;
default:
break;
diff --git net/netfilter/nft_reject_inet.c net/netfilter/nft_reject_inet.c
index cf8f2646e93c..36b219e2e896 100644
--- net/netfilter/nft_reject_inet.c
+++ net/netfilter/nft_reject_inet.c
@@ -28,7 +28,8 @@ static void nft_reject_inet_eval(const struct nft_expr *expr,
nft_hook(pkt));
break;
case NFT_REJECT_TCP_RST:
- nf_send_reset(nft_net(pkt), pkt->skb, nft_hook(pkt));
+ nf_send_reset(nft_net(pkt), pkt->xt.state->sk,
+ pkt->skb, nft_hook(pkt));
break;
case NFT_REJECT_ICMPX_UNREACH:
nf_send_unreach(pkt->skb,
@@ -44,7 +45,8 @@ static void nft_reject_inet_eval(const struct nft_expr *expr,
priv->icmp_code, nft_hook(pkt));
break;
case NFT_REJECT_TCP_RST:
- nf_send_reset6(nft_net(pkt), pkt->skb, nft_hook(pkt));
+ nf_send_reset6(nft_net(pkt), pkt->xt.state->sk,
+ pkt->skb, nft_hook(pkt));
break;
case NFT_REJECT_ICMPX_UNREACH:
nf_send_unreach6(nft_net(pkt), pkt->skb,
--
2.29.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] netfilter: use actual socket sk for REJECT action
2020-11-21 11:11 [PATCH] netfilter: use actual socket sk for REJECT action Jan Engelhardt
@ 2020-12-01 8:49 ` Pablo Neira Ayuso
2020-12-01 12:49 ` Jan Engelhardt
0 siblings, 1 reply; 6+ messages in thread
From: Pablo Neira Ayuso @ 2020-12-01 8:49 UTC (permalink / raw)
To: Jan Engelhardt; +Cc: netfilter-devel
Hi Jan,
On Sat, Nov 21, 2020 at 12:11:51PM +0100, Jan Engelhardt wrote:
> True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_
> actually make use of state->sk when possible, such as in the REJECT
> modules.
Could you rebase and resend a v2? I think this patch is clashing with
recent updates to add REJECT support for ingress.
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] netfilter: use actual socket sk for REJECT action
2020-12-01 8:49 ` Pablo Neira Ayuso
@ 2020-12-01 12:49 ` Jan Engelhardt
2020-12-01 13:36 ` Pablo Neira Ayuso
0 siblings, 1 reply; 6+ messages in thread
From: Jan Engelhardt @ 2020-12-01 12:49 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: netfilter-devel
On Tuesday 2020-12-01 09:49, Pablo Neira Ayuso wrote:
>Hi Jan,
>
>On Sat, Nov 21, 2020 at 12:11:51PM +0100, Jan Engelhardt wrote:
>> True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_
>> actually make use of state->sk when possible, such as in the REJECT
>> modules.
>
>Could you rebase and resend a v2? I think this patch is clashing with
>recent updates to add REJECT support for ingress.
I observed no conflict when attempting the rebase command, either onto
cb7fb043e69a (/pub/scm/linux/kernel/git/netdev/net-next.git #master) or
f7583f02a538 (/pub/scm/linux/kernel/git/pablo/nf-next #master)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] netfilter: use actual socket sk for REJECT action
2020-12-01 12:49 ` Jan Engelhardt
@ 2020-12-01 13:36 ` Pablo Neira Ayuso
2020-12-01 13:41 ` Jeremy Sowden
2020-12-01 14:31 ` Jan Engelhardt
0 siblings, 2 replies; 6+ messages in thread
From: Pablo Neira Ayuso @ 2020-12-01 13:36 UTC (permalink / raw)
To: Jan Engelhardt; +Cc: netfilter-devel
On Tue, Dec 01, 2020 at 01:49:21PM +0100, Jan Engelhardt wrote:
> On Tuesday 2020-12-01 09:49, Pablo Neira Ayuso wrote:
>
> >Hi Jan,
> >
> >On Sat, Nov 21, 2020 at 12:11:51PM +0100, Jan Engelhardt wrote:
> >> True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_
> >> actually make use of state->sk when possible, such as in the REJECT
> >> modules.
> >
> >Could you rebase and resend a v2? I think this patch is clashing with
> >recent updates to add REJECT support for ingress.
>
> I observed no conflict when attempting the rebase command, either onto
> cb7fb043e69a (/pub/scm/linux/kernel/git/netdev/net-next.git #master) or
> f7583f02a538 (/pub/scm/linux/kernel/git/pablo/nf-next #master)
I see, it does not apply via:
git am netfilter-use-actual-socket-sk-for-REJECT-action.patch
because patch shows:
diff --git include/net/netfilter/ipv4/nf_reject.h include/net/netfilter/ipv4/nf_reject.h
index 40e0e0623f46..d8207a82d761 100644
--- include/net/netfilter/ipv4/nf_reject.h
+++ include/net/netfilter/ipv4/nf_reject.h
instead of:
diff --git a/include/net/netfilter/ipv4/nf_reject.h b/include/net/netfilter/ipv4/nf_reject.h
index 40e0e0623f46..d8207a82d761 100644
--- a/include/net/netfilter/ipv4/nf_reject.h
+++ b/include/net/netfilter/ipv4/nf_reject.h
I just manually updated the patch so now it works.
Is there a similar way to make patch -p0 for git-am BTW?
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] netfilter: use actual socket sk for REJECT action
2020-12-01 13:36 ` Pablo Neira Ayuso
@ 2020-12-01 13:41 ` Jeremy Sowden
2020-12-01 14:31 ` Jan Engelhardt
1 sibling, 0 replies; 6+ messages in thread
From: Jeremy Sowden @ 2020-12-01 13:41 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: Jan Engelhardt, netfilter-devel
[-- Attachment #1: Type: text/plain, Size: 1514 bytes --]
On 2020-12-01, at 14:36:39 +0100, Pablo Neira Ayuso wrote:
> On Tue, Dec 01, 2020 at 01:49:21PM +0100, Jan Engelhardt wrote:
> > On Tuesday 2020-12-01 09:49, Pablo Neira Ayuso wrote:
> > >On Sat, Nov 21, 2020 at 12:11:51PM +0100, Jan Engelhardt wrote:
> > >> True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_
> > >> actually make use of state->sk when possible, such as in the REJECT
> > >> modules.
> > >
> > >Could you rebase and resend a v2? I think this patch is clashing with
> > >recent updates to add REJECT support for ingress.
> >
> > I observed no conflict when attempting the rebase command, either onto
> > cb7fb043e69a (/pub/scm/linux/kernel/git/netdev/net-next.git #master) or
> > f7583f02a538 (/pub/scm/linux/kernel/git/pablo/nf-next #master)
>
> I see, it does not apply via:
>
> git am netfilter-use-actual-socket-sk-for-REJECT-action.patch
>
> because patch shows:
>
> diff --git include/net/netfilter/ipv4/nf_reject.h include/net/netfilter/ipv4/nf_reject.h
> index 40e0e0623f46..d8207a82d761 100644
> --- include/net/netfilter/ipv4/nf_reject.h
> +++ include/net/netfilter/ipv4/nf_reject.h
>
> instead of:
>
> diff --git a/include/net/netfilter/ipv4/nf_reject.h b/include/net/netfilter/ipv4/nf_reject.h
> index 40e0e0623f46..d8207a82d761 100644
> --- a/include/net/netfilter/ipv4/nf_reject.h
> +++ b/include/net/netfilter/ipv4/nf_reject.h
>
> I just manually updated the patch so now it works.
>
> Is there a similar way to make patch -p0 for git-am BTW?
git am -p0.
J.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] netfilter: use actual socket sk for REJECT action
2020-12-01 13:36 ` Pablo Neira Ayuso
2020-12-01 13:41 ` Jeremy Sowden
@ 2020-12-01 14:31 ` Jan Engelhardt
1 sibling, 0 replies; 6+ messages in thread
From: Jan Engelhardt @ 2020-12-01 14:31 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: netfilter-devel
On Tuesday 2020-12-01 14:36, Pablo Neira Ayuso wrote:
>I see, it does not apply via:
>
> git am netfilter-use-actual-socket-sk-for-REJECT-action.patch
>
>because patch shows:
>
>--- include/net/netfilter/ipv4/nf_reject.h
>
>instead of:
>
>--- a/include/net/netfilter/ipv4/nf_reject.h
Ooxh! ~/.gitconfig:
[diff]
algorithm = histogram
noprefix = true
diff.noprefix has an effect on `git diff`, but not `git add -p`,
but then again does on `git send-email`.
That's real intuitive. Not. :-/
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-12-01 14:32 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-11-21 11:11 [PATCH] netfilter: use actual socket sk for REJECT action Jan Engelhardt
2020-12-01 8:49 ` Pablo Neira Ayuso
2020-12-01 12:49 ` Jan Engelhardt
2020-12-01 13:36 ` Pablo Neira Ayuso
2020-12-01 13:41 ` Jeremy Sowden
2020-12-01 14:31 ` Jan Engelhardt
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