| /** Copyright (c) 2013 Qualcomm Atheros, Inc. */ |
| |
| #ifndef _NF_CONNTRACK_COMMON_H |
| #define _NF_CONNTRACK_COMMON_H |
| /* Connection state tracking for netfilter. This is separated from, |
| but required by, the NAT layer; it can also be used by an iptables |
| extension. */ |
| enum ip_conntrack_info |
| { |
| /* Part of an established connection (either direction). */ |
| IP_CT_ESTABLISHED, |
| |
| /* Like NEW, but related to an existing connection, or ICMP error |
| (in either direction). */ |
| IP_CT_RELATED, |
| |
| /* Started a new connection to track (only |
| IP_CT_DIR_ORIGINAL); may be a retransmission. */ |
| IP_CT_NEW, |
| |
| /* >= this indicates reply direction */ |
| IP_CT_IS_REPLY, |
| |
| /* Number of distinct IP_CT types (no NEW in reply dirn). */ |
| IP_CT_NUMBER = IP_CT_IS_REPLY * 2 - 1 |
| }; |
| |
| /* Bitset representing status of connection. */ |
| enum ip_conntrack_status { |
| /* It's an expected connection: bit 0 set. This bit never changed */ |
| IPS_EXPECTED_BIT = 0, |
| IPS_EXPECTED = (1 << IPS_EXPECTED_BIT), |
| |
| /* We've seen packets both ways: bit 1 set. Can be set, not unset. */ |
| IPS_SEEN_REPLY_BIT = 1, |
| IPS_SEEN_REPLY = (1 << IPS_SEEN_REPLY_BIT), |
| |
| /* Conntrack should never be early-expired. */ |
| IPS_ASSURED_BIT = 2, |
| IPS_ASSURED = (1 << IPS_ASSURED_BIT), |
| |
| /* Connection is confirmed: originating packet has left box */ |
| IPS_CONFIRMED_BIT = 3, |
| IPS_CONFIRMED = (1 << IPS_CONFIRMED_BIT), |
| |
| /* Connection needs src nat in orig dir. This bit never changed. */ |
| IPS_SRC_NAT_BIT = 4, |
| IPS_SRC_NAT = (1 << IPS_SRC_NAT_BIT), |
| |
| /* Connection needs dst nat in orig dir. This bit never changed. */ |
| IPS_DST_NAT_BIT = 5, |
| IPS_DST_NAT = (1 << IPS_DST_NAT_BIT), |
| |
| /* Both together. */ |
| IPS_NAT_MASK = (IPS_DST_NAT | IPS_SRC_NAT), |
| |
| /* Connection needs TCP sequence adjusted. */ |
| IPS_SEQ_ADJUST_BIT = 6, |
| IPS_SEQ_ADJUST = (1 << IPS_SEQ_ADJUST_BIT), |
| |
| /* NAT initialization bits. */ |
| IPS_SRC_NAT_DONE_BIT = 7, |
| IPS_SRC_NAT_DONE = (1 << IPS_SRC_NAT_DONE_BIT), |
| |
| IPS_DST_NAT_DONE_BIT = 8, |
| IPS_DST_NAT_DONE = (1 << IPS_DST_NAT_DONE_BIT), |
| |
| /* Both together */ |
| IPS_NAT_DONE_MASK = (IPS_DST_NAT_DONE | IPS_SRC_NAT_DONE), |
| |
| /* Connection is dying (removed from lists), can not be unset. */ |
| IPS_DYING_BIT = 9, |
| IPS_DYING = (1 << IPS_DYING_BIT), |
| |
| /* Connection has fixed timeout. */ |
| IPS_FIXED_TIMEOUT_BIT = 10, |
| IPS_FIXED_TIMEOUT = (1 << IPS_FIXED_TIMEOUT_BIT), |
| |
| #ifdef CONFIG_ATHRS_HW_NAT |
| |
| /* Marked when a ct/nat help owns this pkt */ |
| IPS_NAT_ALG_PKT_BIT = 11, |
| IPS_NAT_ALG_PKT = (1 << IPS_NAT_ALG_PKT_BIT), |
| |
| /* Marked when the tuple is added to the h/w nat */ |
| IPS_ATHR_HW_NAT_ADDED_BIT = 12, |
| IPS_ATHR_HW_NAT_ADDED = (1 << IPS_ATHR_HW_NAT_ADDED_BIT), |
| |
| /* Marked when the tuple is added to the h/w nat for a UDP pkt*/ |
| IPS_ATHR_HW_NAT_IS_UDP_BIT = 13, |
| IPS_ATHR_HW_NAT_IS_UDP = (1 << IPS_ATHR_HW_NAT_IS_UDP_BIT), |
| |
| /* Marked when the tuple is added to the h/w nat for a UDP pkt*/ |
| IPS_ATHR_HW_NAT_IS_ONLY_EGRESS_BIT = 14, |
| IPS_ATHR_HW_NAT_IS_ONLY_EGRESS = (1 << IPS_ATHR_HW_NAT_IS_ONLY_EGRESS_BIT), |
| |
| /* Marked when the tuple is added to the h/w nat for a UDP pkt*/ |
| IPS_ATHR_SW_NAT_SKIPPED_BIT = 15, |
| IPS_ATHR_SW_NAT_SKIPPED = (1 << IPS_ATHR_SW_NAT_SKIPPED_BIT), |
| |
| /* |
| * Addded for nat frag table fast hash entry lookup |
| */ |
| |
| IPS_ATHR_HW_CT_INGRESS_BIT = 16, |
| IPS_ATHR_HW_CT_INGRESS = (1 << IPS_ATHR_HW_CT_INGRESS_BIT), |
| |
| IPS_ATHR_HW_CT_EGRESS_BIT = 17, |
| IPS_ATHR_HW_CT_EGRESS = (1 << IPS_ATHR_HW_CT_EGRESS_BIT), |
| |
| /*added for hw nat, mark ct when packet go through unsupported layer2 interface*/ |
| IPS_ATHR_HW_SRC_NAT_L2NOSUPPORT_BIT = 18, |
| IPS_ATHR_HW_SRC_NAT_L2NOSUPPORT = (1 << IPS_ATHR_HW_SRC_NAT_L2NOSUPPORT_BIT), |
| |
| IPS_ATHR_HW_DST_NAT_L2NOSUPPORT_BIT = 19, |
| IPS_ATHR_HW_DST_NAT_L2NOSUPPORT = (1 << IPS_ATHR_HW_DST_NAT_L2NOSUPPORT_BIT), |
| #endif |
| }; |
| |
| |
| #endif /* _NF_CONNTRACK_COMMON_H */ |
