Commit | Line | Data |
---|---|---|
d9e78914 FW |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | #if IS_ENABLED(CONFIG_NFT_CT) | |
3 | #include <linux/netfilter/nf_tables.h> | |
4 | #include <net/netfilter/nf_tables_core.h> | |
5 | #include <net/netfilter/nf_conntrack.h> | |
6 | ||
7 | void nft_ct_get_fast_eval(const struct nft_expr *expr, | |
8 | struct nft_regs *regs, | |
9 | const struct nft_pktinfo *pkt) | |
10 | { | |
11 | const struct nft_ct *priv = nft_expr_priv(expr); | |
12 | u32 *dest = ®s->data[priv->dreg]; | |
13 | enum ip_conntrack_info ctinfo; | |
14 | const struct nf_conn *ct; | |
15 | unsigned int state; | |
16 | ||
17 | ct = nf_ct_get(pkt->skb, &ctinfo); | |
d9e78914 FW |
18 | |
19 | switch (priv->key) { | |
20 | case NFT_CT_STATE: | |
21 | if (ct) | |
22 | state = NF_CT_STATE_BIT(ctinfo); | |
23 | else if (ctinfo == IP_CT_UNTRACKED) | |
24 | state = NF_CT_STATE_UNTRACKED_BIT; | |
25 | else | |
26 | state = NF_CT_STATE_INVALID_BIT; | |
27 | *dest = state; | |
28 | return; | |
f057b63b FW |
29 | default: |
30 | break; | |
31 | } | |
32 | ||
33 | if (!ct) { | |
34 | regs->verdict.code = NFT_BREAK; | |
35 | return; | |
36 | } | |
37 | ||
38 | switch (priv->key) { | |
d9e78914 FW |
39 | case NFT_CT_DIRECTION: |
40 | nft_reg_store8(dest, CTINFO2DIR(ctinfo)); | |
41 | return; | |
42 | case NFT_CT_STATUS: | |
43 | *dest = ct->status; | |
44 | return; | |
45 | #ifdef CONFIG_NF_CONNTRACK_MARK | |
46 | case NFT_CT_MARK: | |
47 | *dest = ct->mark; | |
48 | return; | |
49 | #endif | |
50 | #ifdef CONFIG_NF_CONNTRACK_SECMARK | |
51 | case NFT_CT_SECMARK: | |
52 | *dest = ct->secmark; | |
53 | return; | |
54 | #endif | |
55 | default: | |
56 | WARN_ON_ONCE(1); | |
57 | regs->verdict.code = NFT_BREAK; | |
58 | break; | |
59 | } | |
60 | } | |
61 | EXPORT_SYMBOL_GPL(nft_ct_get_fast_eval); | |
62 | #endif |