projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 48b1de4c PM |
2 | #ifndef _NF_CONNTRACK_SYNPROXY_H |
| 3 | #define _NF_CONNTRACK_SYNPROXY_H | |
| 4 | ||
| ad49d86e | 5 | #include <net/netfilter/nf_conntrack_seqadj.h> |
| 48b1de4c PM |
6 | #include <net/netns/generic.h> |
| 7 | ||
| 8 | struct nf_conn_synproxy { | |
| 9 | u32 isn; | |
| 10 | u32 its; | |
| 11 | u32 tsoff; | |
| 12 | }; | |
| 13 | ||
| 14 | static inline struct nf_conn_synproxy *nfct_synproxy(const struct nf_conn *ct) | |
| 15 | { | |
| 16 | #if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) | |
| 17 | return nf_ct_ext_find(ct, NF_CT_EXT_SYNPROXY); | |
| 18 | #else | |
| 19 | return NULL; | |
| 20 | #endif | |
| 21 | } | |
| 22 | ||
| 23 | static inline struct nf_conn_synproxy *nfct_synproxy_ext_add(struct nf_conn *ct) | |
| 24 | { | |
| 25 | #if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) | |
| 26 | return nf_ct_ext_add(ct, NF_CT_EXT_SYNPROXY, GFP_ATOMIC); | |
| 27 | #else | |
| 28 | return NULL; | |
| 29 | #endif | |
| 30 | } | |
| 31 | ||
| 4440a2ab GF |
32 | static inline bool nf_ct_add_synproxy(struct nf_conn *ct, |
| 33 | const struct nf_conn *tmpl) | |
| 34 | { | |
| 22e81d74 | 35 | #if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) |
| 4440a2ab GF |
36 | if (tmpl && nfct_synproxy(tmpl)) { |
| 37 | if (!nfct_seqadj_ext_add(ct)) | |
| 38 | return false; | |
| 39 | ||
| 40 | if (!nfct_synproxy_ext_add(ct)) | |
| 41 | return false; | |
| 42 | } | |
| 22e81d74 | 43 | #endif |
| 4440a2ab GF |
44 | |
| 45 | return true; | |
| 46 | } | |
| 47 | ||
| 48b1de4c | 48 | #endif /* _NF_CONNTRACK_SYNPROXY_H */ |