--- /dev/null
+#ifndef _UAPI_NF_CONNTRACK_COMMON_H
+#define _UAPI_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,
+
+ IP_CT_ESTABLISHED_REPLY = IP_CT_ESTABLISHED + IP_CT_IS_REPLY,
+ IP_CT_RELATED_REPLY = IP_CT_RELATED + IP_CT_IS_REPLY,
+ IP_CT_NEW_REPLY = IP_CT_NEW + IP_CT_IS_REPLY,
+ /* Number of distinct IP_CT types (no NEW in reply dirn). */
+ IP_CT_NUMBER = IP_CT_IS_REPLY * 2 - 1
+};
+
+#define NF_CT_STATE_INVALID_BIT (1 << 0)
+#define NF_CT_STATE_BIT(ctinfo) (1 << ((ctinfo) % IP_CT_IS_REPLY + 1))
+#define NF_CT_STATE_UNTRACKED_BIT (1 << (IP_CT_NUMBER + 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),
+
+ /* Conntrack is a template */
+ IPS_TEMPLATE_BIT = 11,
+ IPS_TEMPLATE = (1 << IPS_TEMPLATE_BIT),
+
+ /* Conntrack is a fake untracked entry */
+ IPS_UNTRACKED_BIT = 12,
+ IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),
+
+ /* Conntrack got a helper explicitly attached via CT target. */
+ IPS_HELPER_BIT = 13,
+ IPS_HELPER = (1 << IPS_HELPER_BIT),
+};
+
+/* Connection tracking event types */
+enum ip_conntrack_events {
+ IPCT_NEW, /* new conntrack */
+ IPCT_RELATED, /* related conntrack */
+ IPCT_DESTROY, /* destroyed conntrack */
+ IPCT_REPLY, /* connection has seen two-way traffic */
+ IPCT_ASSURED, /* connection status has changed to assured */
+ IPCT_PROTOINFO, /* protocol information has changed */
+ IPCT_HELPER, /* new helper has been set */
+ IPCT_MARK, /* new mark has been set */
+ IPCT_SEQADJ, /* sequence adjustment has changed */
+ IPCT_NATSEQADJ = IPCT_SEQADJ,
+ IPCT_SECMARK, /* new security mark has been set */
+ IPCT_LABEL, /* new connlabel has been set */
+};
+
+enum ip_conntrack_expect_events {
+ IPEXP_NEW, /* new expectation */
+ IPEXP_DESTROY, /* destroyed expectation */
+};
+
+/* expectation flags */
+#define NF_CT_EXPECT_PERMANENT 0x1
+#define NF_CT_EXPECT_INACTIVE 0x2
+#define NF_CT_EXPECT_USERSPACE 0x4
+
+
+#endif /* _UAPI_NF_CONNTRACK_COMMON_H */
Code Review / kvmfornfv.git / blobdiff