netfilter: nft_flow_offload: don't offload when sequence numbers need adjustment
We can't deal with tcp sequence number rewrite in flow_offload. While at it, simplify helper check, we only need to know if the extension is present, we don't need the helper data. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Родитель
8437a6209f
Коммит
91a9048f23
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@ -12,7 +12,6 @@
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#include <net/netfilter/nf_conntrack_core.h>
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#include <net/netfilter/nf_conntrack_core.h>
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#include <linux/netfilter/nf_conntrack_common.h>
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#include <linux/netfilter/nf_conntrack_common.h>
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#include <net/netfilter/nf_flow_table.h>
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#include <net/netfilter/nf_flow_table.h>
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#include <net/netfilter/nf_conntrack_helper.h>
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struct nft_flow_offload {
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struct nft_flow_offload {
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struct nft_flowtable *flowtable;
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struct nft_flowtable *flowtable;
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@ -67,7 +66,6 @@ static void nft_flow_offload_eval(const struct nft_expr *expr,
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{
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{
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struct nft_flow_offload *priv = nft_expr_priv(expr);
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struct nft_flow_offload *priv = nft_expr_priv(expr);
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struct nf_flowtable *flowtable = &priv->flowtable->data;
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struct nf_flowtable *flowtable = &priv->flowtable->data;
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const struct nf_conn_help *help;
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enum ip_conntrack_info ctinfo;
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enum ip_conntrack_info ctinfo;
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struct nf_flow_route route;
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struct nf_flow_route route;
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struct flow_offload *flow;
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struct flow_offload *flow;
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@ -93,8 +91,8 @@ static void nft_flow_offload_eval(const struct nft_expr *expr,
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goto out;
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goto out;
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}
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}
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help = nfct_help(ct);
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if (nf_ct_ext_exist(ct, NF_CT_EXT_HELPER) ||
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if (help)
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ct->status & IPS_SEQ_ADJUST)
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goto out;
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goto out;
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if (!nf_ct_is_confirmed(ct))
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if (!nf_ct_is_confirmed(ct))
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