Add hostif trap for NTP (#1453)

* Add hostif traps for NTP.

https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=ntp
Signed-off-by: Vivek Ramamoorthy <vivekmoorthy@google.com>

* retrigger python LGTM

Co-authored-by: Vivek Ramamoorthy <vivekmoorthy@google.com>

Author: vivekmoorthy

inc/saihostif.h

@@ -413,6 +413,18 @@ typedef enum _sai_hostif_trap_type_t
      */
     SAI_HOSTIF_TRAP_TYPE_P4RT = 0x0000400b,
 
+    /**
+     * @brief NTPCLIENT traffic (UDP/TCP src port == 123)
+     * to local router IP address (default packet action is drop)
+     */
+    SAI_HOSTIF_TRAP_TYPE_NTPCLIENT = 0x0000400c,
+
+    /**
+     * @brief NTPSERVER traffic (UDP/TCP dst port == 123)
+     * to local router IP address (default packet action is drop)
+     */
+    SAI_HOSTIF_TRAP_TYPE_NTPSERVER = 0x0000400d,
+
     /** Local IP traps custom range start */
     SAI_HOSTIF_TRAP_TYPE_LOCAL_IP_CUSTOM_RANGE_BASE = 0x00005000,
 

meta/acronyms.txt

@@ -85,6 +85,8 @@ NAPT - Network Address Port Translation
 NHLFE - Next Hop Label Forwarding Entry
 NPU - Numeric Processing Unit
 NRZ - Non Return to Zero
+NTPCLIENT - Network Time Protocol Client
+NTPSERVER - Network Time Protocol Server
 NVGRE - Network Virtualization using Generic Routing Encapsulation
 OAM - Operations Administration and Maintenance
 OUI - Organizationally Unique Identifier