cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / netfilter / nf_conntrack_common.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_common.h b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_common.h
new file mode 100644 (file)
index 0000000..dc374c9
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_common.h
@@ -0,0 +1,142 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#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,
+
+       IP_CT_ESTABLISHED_REPLY = IP_CT_ESTABLISHED + IP_CT_IS_REPLY,
+       IP_CT_RELATED_REPLY = IP_CT_RELATED + IP_CT_IS_REPLY,
+       /* No NEW in reply direction. */
+
+       /* Number of distinct IP_CT types. */
+       IP_CT_NUMBER,
+
+       /* only for userspace compatibility */
+       IP_CT_NEW_REPLY = IP_CT_NUMBER,
+};
+
+#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 << 6)
+
+/* 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.  Obsolete and not used anymore */
+       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),
+
+       /* Conntrack has been offloaded to flow table. */
+       IPS_OFFLOAD_BIT = 14,
+       IPS_OFFLOAD = (1 << IPS_OFFLOAD_BIT),
+
+       /* Be careful here, modifying these bits can make things messy,
+        * so don't let users modify them directly.
+        */
+       IPS_UNCHANGEABLE_MASK = (IPS_NAT_DONE_MASK | IPS_NAT_MASK |
+                                IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING |
+                                IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_OFFLOAD),
+
+       __IPS_MAX_BIT = 15,
+};
+
+/* 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 */
+       IPCT_SYNPROXY,          /* synproxy 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 /* _NF_CONNTRACK_COMMON_H */