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// SPDX-License-Identifier: GPL-2.0-only
#if IS_ENABLED(CONFIG_NFT_CT)
#include <linux/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables_core.h>
#include <net/netfilter/nf_conntrack.h>
void nft_ct_get_fast_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
const struct nft_ct *priv = nft_expr_priv(expr);
u32 *dest = ®s->data[priv->dreg];
enum ip_conntrack_info ctinfo;
const struct nf_conn *ct;
unsigned int state;
ct = nf_ct_get(pkt->skb, &ctinfo);
switch (priv->key) {
case NFT_CT_STATE:
if (ct)
state = NF_CT_STATE_BIT(ctinfo);
else if (ctinfo == IP_CT_UNTRACKED)
state = NF_CT_STATE_UNTRACKED_BIT;
else
state = NF_CT_STATE_INVALID_BIT;
*dest = state;
return;
default:
break;
}
if (!ct) {
regs->verdict.code = NFT_BREAK;
return;
}
switch (priv->key) {
case NFT_CT_DIRECTION:
nft_reg_store8(dest, CTINFO2DIR(ctinfo));
return;
case NFT_CT_STATUS:
*dest = ct->status;
return;
#ifdef CONFIG_NF_CONNTRACK_MARK
case NFT_CT_MARK:
*dest = ct->mark;
return;
#endif
#ifdef CONFIG_NF_CONNTRACK_SECMARK
case NFT_CT_SECMARK:
*dest = ct->secmark;
return;
#endif
default:
WARN_ON_ONCE(1);
regs->verdict.code = NFT_BREAK;
break;
}
}
EXPORT_SYMBOL_GPL(nft_ct_get_fast_eval);
#endif
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