commit af9b7156c8fd16c671ce9332613faaf864b075b3
author qinyang <qiny@yusur.tech> Tue Jun 27 01:11:53 2023 -0700
committer Florin Coras <florin.coras@gmail.com> Fri Jul 21 16:27:14 2023 +0000
tree 201f45dacba23771db635c563b34315b6594d4af
parent ae916b39049669bbada12dbcfecbb4e3f9c09c69

vcl: ldp support SO_ORIGINAL_DST

Type: improvement

Support SO_ORIGINAL_DST socket option to get original dst_ip4 and dst_port if nat44 rule enabled.

Change-Id: If00e00d03e48f3b78a23a68f1b078954d79dd0f7
Signed-off-by: qinyang <qiny@yusur.tech>

src/vnet/session/application_interface.h

diff --git a/src/vnet/session/application_interface.h b/src/vnet/session/application_interface.h
index 138953b..510068b 100644
--- a/src/vnet/session/application_interface.h
+++ b/src/vnet/session/application_interface.h
@@ -233,7 +233,8 @@
   _ (USE_LOCAL_SCOPE, "App can use local session scope")                      \
   _ (EVT_MQ_USE_EVENTFD, "Use eventfds for signaling")                        \
   _ (MEMFD_FOR_BUILTIN, "Use memfd for builtin app segs")                     \
-  _ (USE_HUGE_PAGE, "Use huge page for FIFO")
+  _ (USE_HUGE_PAGE, "Use huge page for FIFO")                                 \
+  _ (GET_ORIGINAL_DST, "Get original dst enabled")
 
 typedef enum _app_options
 {
@@ -299,15 +300,15 @@
   u8 is_ip4;			/**< set if uses ip4 networking */
 } app_session_transport_t;
 
-#define foreach_app_session_field					\
-  _(svm_fifo_t, *rx_fifo)		/**< rx fifo */			\
-  _(svm_fifo_t, *tx_fifo)		/**< tx fifo */			\
-  _(session_type_t, session_type)	/**< session type */		\
-  _(volatile u8, session_state)		/**< session state */		\
-  _(u32, session_index)			/**< index in owning pool */	\
-  _(app_session_transport_t, transport)	/**< transport info */		\
-  _(svm_msg_q_t, *vpp_evt_q)		/**< vpp event queue  */	\
-  _(u8, is_dgram)			/**< flag for dgram mode */	\
+#define foreach_app_session_field                                             \
+  _ (svm_fifo_t, *rx_fifo)		 /**< rx fifo */                      \
+  _ (svm_fifo_t, *tx_fifo)		 /**< tx fifo */                      \
+  _ (session_type_t, session_type)	 /**< session type */                 \
+  _ (volatile u8, session_state)	 /**< session state */                \
+  _ (u32, session_index)		 /**< index in owning pool */         \
+  _ (app_session_transport_t, transport) /**< transport info */               \
+  _ (svm_msg_q_t, *vpp_evt_q)		 /**< vpp event queue  */             \
+  _ (u8, is_dgram)			 /**< flag for dgram mode */
 
 typedef struct
 {
@@ -386,6 +387,8 @@
   transport_endpoint_t lcl;
   transport_endpoint_t rmt;
   u8 flags;
+  u32 original_dst_ip4;
+  u16 original_dst_port;
 } __clib_packed session_accepted_msg_t;
 
 typedef struct session_accepted_reply_msg_