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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | |
| 3 | #ifndef _NF_CONNTRACK_ACT_CT_H |
| 4 | #define _NF_CONNTRACK_ACT_CT_H |
| 5 | |
| 6 | #include <net/netfilter/nf_conntrack.h> |
| 7 | #include <linux/netfilter/nf_conntrack_common.h> |
| 8 | #include <net/netfilter/nf_conntrack_extend.h> |
| 9 | |
| 10 | struct nf_conn_act_ct_ext { |
| 11 | int ifindex[IP_CT_DIR_MAX]; |
| 12 | }; |
| 13 | |
| 14 | static inline struct nf_conn_act_ct_ext *nf_conn_act_ct_ext_find(const struct nf_conn *ct) |
| 15 | { |
| 16 | #if IS_ENABLED(CONFIG_NET_ACT_CT) |
| 17 | return nf_ct_ext_find(ct, NF_CT_EXT_ACT_CT); |
| 18 | #else |
| 19 | return NULL; |
| 20 | #endif |
| 21 | } |
| 22 | |
| 23 | static inline void nf_conn_act_ct_ext_fill(struct sk_buff *skb, struct nf_conn *ct, |
| 24 | enum ip_conntrack_info ctinfo) |
| 25 | { |
| 26 | #if IS_ENABLED(CONFIG_NET_ACT_CT) |
| 27 | struct nf_conn_act_ct_ext *act_ct_ext; |
| 28 | |
| 29 | act_ct_ext = nf_conn_act_ct_ext_find(ct); |
| 30 | if (dev_net(skb->dev) == &init_net && act_ct_ext) |
| 31 | act_ct_ext->ifindex[CTINFO2DIR(ctinfo)] = skb->dev->ifindex; |
| 32 | #endif |
| 33 | } |
| 34 | |
| 35 | static inline struct |
| 36 | nf_conn_act_ct_ext *nf_conn_act_ct_ext_add(struct sk_buff *skb, |
| 37 | struct nf_conn *ct, |
| 38 | enum ip_conntrack_info ctinfo) |
| 39 | { |
| 40 | #if IS_ENABLED(CONFIG_NET_ACT_CT) |
| 41 | struct nf_conn_act_ct_ext *act_ct = nf_ct_ext_find(ct, NF_CT_EXT_ACT_CT); |
| 42 | |
| 43 | if (act_ct) |
| 44 | return act_ct; |
| 45 | |
| 46 | act_ct = nf_ct_ext_add(ct, NF_CT_EXT_ACT_CT, GFP_ATOMIC); |
| 47 | nf_conn_act_ct_ext_fill(skb, ct, ctinfo); |
| 48 | return act_ct; |
| 49 | #else |
| 50 | return NULL; |
| 51 | #endif |
| 52 | } |
| 53 | |
| 54 | #endif /* _NF_CONNTRACK_ACT_CT_H */ |
| 55 |
Warning: This file is not a C or C++ file. It does not have highlighting.