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-rw-r--r--src/plugins/nat/lib/lib.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/plugins/nat/lib/lib.h b/src/plugins/nat/lib/lib.h
index cea9ed71c8c..b0b5229b337 100644
--- a/src/plugins/nat/lib/lib.h
+++ b/src/plugins/nat/lib/lib.h
@@ -54,6 +54,19 @@ typedef enum
#undef _
} nat_error_t;
+#define foreach_nat_protocol \
+ _ (OTHER, 0, other, "other") \
+ _ (UDP, 1, udp, "udp") \
+ _ (TCP, 2, tcp, "tcp") \
+ _ (ICMP, 3, icmp, "icmp")
+
+typedef enum
+{
+#define _(N, i, n, s) NAT_PROTOCOL_##N = i,
+ foreach_nat_protocol
+#undef _
+} nat_protocol_t;
+
/* default protocol timeouts */
#define NAT_UDP_TIMEOUT 300
#define NAT_TCP_TRANSITORY_TIMEOUT 240
@@ -83,6 +96,29 @@ nat_reset_timeouts (nat_timeouts_t * timeouts)
}
static_always_inline u32
+nat_session_get_timeout (nat_timeouts_t *timeouts, nat_protocol_t proto,
+ u8 state)
+{
+ switch (proto)
+ {
+ case NAT_PROTOCOL_ICMP:
+ return timeouts->icmp;
+ case NAT_PROTOCOL_UDP:
+ return timeouts->udp;
+ case NAT_PROTOCOL_TCP:
+ {
+ if (state)
+ return timeouts->tcp.transitory;
+ else
+ return timeouts->tcp.established;
+ }
+ default:
+ return timeouts->udp;
+ }
+ return 0;
+}
+
+static_always_inline u32
nat_calc_bihash_buckets (u32 n_elts)
{
n_elts = n_elts / 2.5;
@@ -102,6 +138,10 @@ nat_calc_bihash_buckets (u32 n_elts)
return lower_pow2;
}
+u8 *format_nat_protocol (u8 *s, va_list *args);
+
+uword unformat_nat_protocol (unformat_input_t *input, va_list *args);
+
#endif /* included_nat_lib_h__ */
/*
* fd.io coding-style-patch-verification: ON