projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9fb9cbb1 YK |
1 | #ifndef _NF_CONNTRACK_COMMON_H |
| 2 | #define _NF_CONNTRACK_COMMON_H | |
| 3 | /* Connection state tracking for netfilter. This is separated from, | |
| 4 | but required by, the NAT layer; it can also be used by an iptables | |
| 5 | extension. */ | |
| d94d9fee | 6 | enum ip_conntrack_info { |
| 9fb9cbb1 YK |
7 | /* Part of an established connection (either direction). */ |
| 8 | IP_CT_ESTABLISHED, | |
| 9 | ||
| 10 | /* Like NEW, but related to an existing connection, or ICMP error | |
| 11 | (in either direction). */ | |
| 12 | IP_CT_RELATED, | |
| 13 | ||
| 14 | /* Started a new connection to track (only | |
| 15 | IP_CT_DIR_ORIGINAL); may be a retransmission. */ | |
| 16 | IP_CT_NEW, | |
| 17 | ||
| 18 | /* >= this indicates reply direction */ | |
| 19 | IP_CT_IS_REPLY, | |
| 20 | ||
| 21 | /* Number of distinct IP_CT types (no NEW in reply dirn). */ | |
| 22 | IP_CT_NUMBER = IP_CT_IS_REPLY * 2 - 1 | |
| 23 | }; | |
| 24 | ||
| 25 | /* Bitset representing status of connection. */ | |
| 26 | enum ip_conntrack_status { | |
| 27 | /* It's an expected connection: bit 0 set. This bit never changed */ | |
| 28 | IPS_EXPECTED_BIT = 0, | |
| 29 | IPS_EXPECTED = (1 << IPS_EXPECTED_BIT), | |
| 30 | ||
| 31 | /* We've seen packets both ways: bit 1 set. Can be set, not unset. */ | |
| 32 | IPS_SEEN_REPLY_BIT = 1, | |
| 33 | IPS_SEEN_REPLY = (1 << IPS_SEEN_REPLY_BIT), | |
| 34 | ||
| 35 | /* Conntrack should never be early-expired. */ | |
| 36 | IPS_ASSURED_BIT = 2, | |
| 37 | IPS_ASSURED = (1 << IPS_ASSURED_BIT), | |
| 38 | ||
| 39 | /* Connection is confirmed: originating packet has left box */ | |
| 40 | IPS_CONFIRMED_BIT = 3, | |
| 41 | IPS_CONFIRMED = (1 << IPS_CONFIRMED_BIT), | |
| 42 | ||
| 43 | /* Connection needs src nat in orig dir. This bit never changed. */ | |
| 44 | IPS_SRC_NAT_BIT = 4, | |
| 45 | IPS_SRC_NAT = (1 << IPS_SRC_NAT_BIT), | |
| 46 | ||
| 47 | /* Connection needs dst nat in orig dir. This bit never changed. */ | |
| 48 | IPS_DST_NAT_BIT = 5, | |
| 49 | IPS_DST_NAT = (1 << IPS_DST_NAT_BIT), | |
| 50 | ||
| 51 | /* Both together. */ | |
| 52 | IPS_NAT_MASK = (IPS_DST_NAT | IPS_SRC_NAT), | |
| 53 | ||
| 54 | /* Connection needs TCP sequence adjusted. */ | |
| 55 | IPS_SEQ_ADJUST_BIT = 6, | |
| 56 | IPS_SEQ_ADJUST = (1 << IPS_SEQ_ADJUST_BIT), | |
| 57 | ||
| 58 | /* NAT initialization bits. */ | |
| 59 | IPS_SRC_NAT_DONE_BIT = 7, | |
| 60 | IPS_SRC_NAT_DONE = (1 << IPS_SRC_NAT_DONE_BIT), | |
| 61 | ||
| 62 | IPS_DST_NAT_DONE_BIT = 8, | |
| 63 | IPS_DST_NAT_DONE = (1 << IPS_DST_NAT_DONE_BIT), | |
| 64 | ||
| 65 | /* Both together */ | |
| 66 | IPS_NAT_DONE_MASK = (IPS_DST_NAT_DONE | IPS_SRC_NAT_DONE), | |
| 67 | ||
| 68 | /* Connection is dying (removed from lists), can not be unset. */ | |
| 69 | IPS_DYING_BIT = 9, | |
| 70 | IPS_DYING = (1 << IPS_DYING_BIT), | |
| 997ae831 EL |
71 | |
| 72 | /* Connection has fixed timeout. */ | |
| 73 | IPS_FIXED_TIMEOUT_BIT = 10, | |
| 74 | IPS_FIXED_TIMEOUT = (1 << IPS_FIXED_TIMEOUT_BIT), | |
| 9fb9cbb1 YK |
75 | }; |
| 76 | ||
| 9fb9cbb1 | 77 | #ifdef __KERNEL__ |
| d94d9fee | 78 | struct ip_conntrack_stat { |
| 9fb9cbb1 YK |
79 | unsigned int searched; |
| 80 | unsigned int found; | |
| 81 | unsigned int new; | |
| 82 | unsigned int invalid; | |
| 83 | unsigned int ignore; | |
| 84 | unsigned int delete; | |
| 85 | unsigned int delete_list; | |
| 86 | unsigned int insert; | |
| 87 | unsigned int insert_failed; | |
| 88 | unsigned int drop; | |
| 89 | unsigned int early_drop; | |
| 90 | unsigned int error; | |
| 91 | unsigned int expect_new; | |
| 92 | unsigned int expect_create; | |
| 93 | unsigned int expect_delete; | |
| 94 | }; | |
| 95 | ||
| 2e4e6a17 HW |
96 | /* call to create an explicit dependency on nf_conntrack. */ |
| 97 | extern void need_conntrack(void); | |
| 98 | ||
| 9fb9cbb1 YK |
99 | #endif /* __KERNEL__ */ |
| 100 | ||
| 101 | #endif /* _NF_CONNTRACK_COMMON_H */ |