On 09.08, Phil Sutter wrote:
> This happens when networking namespaces are enabled.
>
> Suggested-by: Patrick McHardy <kaber@xxxxxxxxx>
> Signed-off-by: Phil Sutter <phil@xxxxxx>
Acked-by: Patrick McHardy <kaber@xxxxxxxxx>
> ---
> Changes since v1:
> - Moved snet param to first place.
> - Constify snet param.
> ---
> net/ipv6/netfilter/ip6t_SYNPROXY.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/net/ipv6/netfilter/ip6t_SYNPROXY.c b/net/ipv6/netfilter/ip6t_SYNPROXY.c
> index 6edb7b1..bcebc24 100644
> --- a/net/ipv6/netfilter/ip6t_SYNPROXY.c
> +++ b/net/ipv6/netfilter/ip6t_SYNPROXY.c
> @@ -37,12 +37,13 @@ synproxy_build_ip(struct sk_buff *skb, const struct in6_addr *saddr,
> }
>
> static void
> -synproxy_send_tcp(const struct sk_buff *skb, struct sk_buff *nskb,
> +synproxy_send_tcp(const struct synproxy_net *snet,
> + const struct sk_buff *skb, struct sk_buff *nskb,
> struct nf_conntrack *nfct, enum ip_conntrack_info ctinfo,
> struct ipv6hdr *niph, struct tcphdr *nth,
> unsigned int tcp_hdr_size)
> {
> - struct net *net = nf_ct_net((struct nf_conn *)nfct);
> + struct net *net = nf_ct_net(snet->tmpl);
> struct dst_entry *dst;
> struct flowi6 fl6;
>
> @@ -83,7 +84,8 @@ free_nskb:
> }
>
> static void
> -synproxy_send_client_synack(const struct sk_buff *skb, const struct tcphdr *th,
> +synproxy_send_client_synack(const struct synproxy_net *snet,
> + const struct sk_buff *skb, const struct tcphdr *th,
> const struct synproxy_options *opts)
> {
> struct sk_buff *nskb;
> @@ -119,7 +121,7 @@ synproxy_send_client_synack(const struct sk_buff *skb, const struct tcphdr *th,
>
> synproxy_build_options(nth, opts);
>
> - synproxy_send_tcp(skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
> + synproxy_send_tcp(snet, skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
> niph, nth, tcp_hdr_size);
> }
>
> @@ -163,7 +165,7 @@ synproxy_send_server_syn(const struct synproxy_net *snet,
>
> synproxy_build_options(nth, opts);
>
> - synproxy_send_tcp(skb, nskb, &snet->tmpl->ct_general, IP_CT_NEW,
> + synproxy_send_tcp(snet, skb, nskb, &snet->tmpl->ct_general, IP_CT_NEW,
> niph, nth, tcp_hdr_size);
> }
>
> @@ -203,7 +205,7 @@ synproxy_send_server_ack(const struct synproxy_net *snet,
>
> synproxy_build_options(nth, opts);
>
> - synproxy_send_tcp(skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
> + synproxy_send_tcp(snet, skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
> }
>
> static void
> @@ -241,7 +243,7 @@ synproxy_send_client_ack(const struct synproxy_net *snet,
>
> synproxy_build_options(nth, opts);
>
> - synproxy_send_tcp(skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
> + synproxy_send_tcp(snet, skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
> }
>
> static bool
> @@ -301,7 +303,7 @@ synproxy_tg6(struct sk_buff *skb, const struct xt_action_param *par)
> XT_SYNPROXY_OPT_SACK_PERM |
> XT_SYNPROXY_OPT_ECN);
>
> - synproxy_send_client_synack(skb, th, &opts);
> + synproxy_send_client_synack(snet, skb, th, &opts);
> return NF_DROP;
>
> } else if (th->ack && !(th->fin || th->rst || th->syn)) {
> --
> 2.1.2
>
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