Update: additional cleaning

src/upf_app/bpf/lib/crc16.h

-// #ifndef __CRC16_H__
-// #define __CRC16_H__
-
-// #include <stdint.h>
-
-// #define CRC16 0x8005
-
-// static uint16_t gen_crc16(const uint8_t *data, uint16_t size)
-// {
-//     uint16_t out = 0;
-//     int bits_read = 0, bit_flag;
-
-//     /* Sanity check: */
-//     if(data == 0)
-//         return 0;
-
-//     // while(size > 0)
-//     int k;
-//     for(k = 0; k < 32; k++)
-//     {
-//         bit_flag = out >> 15;
-
-//         /* Get next bit: */
-//         out <<= 1;
-//         out |= (*data >> bits_read) & 1; // item a) work from the least
-//         significant bits
-
-//         /* Increment bit counter: */
-//         bits_read++;
-//         if(bits_read > 7)
-//         {
-//             bits_read = 0;
-//             data++;
-//             // size--;
-//         }
-
-//         /* Cycle check: */
-//         if(bit_flag)
-//             out ^= CRC16;
-
-//     }
-
-//     // item b) "push out" the last 16 bits
-//     int i;
-//     for (i = 0; i < 16; ++i) {
-//         bit_flag = out >> 15;
-//         out <<= 1;
-//         if(bit_flag)
-//             out ^= CRC16;
-//     }
-
-//     // item c) reverse the bits
-//     uint16_t crc = 0;
-//     i = 0x8000;
-//     int j = 0x0001;
-//     for (; i != 0; i >>=1, j <<= 1) {
-//         if (i & out) crc |= j;
-//     }
-
-//     return crc;
-// }
-
-// #endif // __CRC16_H__
\ No newline at end of file

src/upf_app/bpf/msg/pfcp_header.h

-#ifndef __PFCP_HEADER_H__
-#define __PFCP_HEADER_H__
-
-#include <types.h>
-#include <ie/ie_base.h>
-
-namespace pfcp {
-//--------------------------------------------------------
-// 7.2.2.2-1: PFCP Message Header for node related messages
-typedef struct header_node {
-  u8 s : 1;
-  u8 mp : 1;
-  u8 spare : 3;
-  u8 version : 3 u16 message_length;
-  u32 sequence_number : 24;
-  u32 spare : 8;
-} header_node_t_;
-
-//--------------------------------------------------------
-// 7.2.2.3-1: PFCP message Header for session related messages
-// TODO
-typedef struct header_node {
-  u8 s : 1;
-  u8 mp : 1;
-  u8 spare : 3;
-  u8 version : 3
-} header_session_t_;
-}  // namespace pfcp
-#endif  // __PFCP_HEADER_H__
\ No newline at end of file

src/upf_app/bpf/rules/pdr_and_far/pfcp_session_lookup_xdp_kernel.c

@@ -4,7 +4,7 @@
 #include <bpf_helpers.h>
 #include <bpf_endian.h>
 #include <endian.h>
-#include <lib/crc16.h>
+//#include <lib/crc16.h>
 #include <utils/csum.h>
 
 #include <protocols/ip.h>