X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.h;h=3162e41b696e9dcbc41b1d4c4c081968109fd57e;hb=ffba3c3;hp=0549acdba3af811e8444d789cd293831898411eb;hpb=e2f4e2f175beb6d6490d275049199db7dd61c783;p=vpp.git

diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h
index 0549acdba3a..3162e41b696 100644
--- a/src/plugins/nat/nat.h
+++ b/src/plugins/nat/nat.h
@@ -165,6 +165,7 @@ typedef enum
 #define NAT44_SES_O2I_FIN_ACK 8
 #define NAT44_SES_I2O_SYN 16
 #define NAT44_SES_O2I_SYN 32
+#define NAT44_SES_RST     64
 
 /* Session flags */
 #define SNAT_SESSION_FLAG_STATIC_MAPPING       1
@@ -174,6 +175,7 @@ typedef enum
 #define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT   16
 #define SNAT_SESSION_FLAG_FWD_BYPASS           32
 #define SNAT_SESSION_FLAG_AFFINITY             64
+#define SNAT_SESSION_FLAG_OUTPUT_FEATURE       128
 
 /* NAT interface flags */
 #define NAT_INTERFACE_FLAG_IS_INSIDE 1
@@ -183,6 +185,7 @@ typedef enum
 #define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY    1
 #define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY  2
 #define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4
+#define NAT_STATIC_MAPPING_FLAG_LB           8
 
 /* *INDENT-OFF* */
 typedef CLIB_PACKED(struct
@@ -666,6 +669,18 @@ unformat_function_t unformat_snat_protocol;
 */
 #define is_identity_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT)
 
+/** \brief Check if NAT static mapping is load-balancing.
+    @param sm NAT static mapping
+    @return 1 if load-balancing
+*/
+#define is_lb_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_LB)
+
+/** \brief Check if client initiating TCP connection (received SYN from client)
+    @param t TCP header
+    @return 1 if client initiating TCP connection
+*/
+#define tcp_is_init(t) ((t->flags & TCP_FLAG_SYN) && !(t->flags & TCP_FLAG_ACK))
+
 /* logging */
 #define nat_log_err(...) \
   vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)