lp.h

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#ifndef NDNDPDK_NDNI_LP_H
#define NDNDPDK_NDNI_LP_H

 
#include "common.h"

typedef struct LpL2 {
  uint64_t seqNumBase; 
  uint8_t fragIndex;
  uint8_t fragCount;

  uint32_t reassBitmap;
  struct cds_list_head reassNode;
  Packet* reassFrags[LpMaxFragments];
} LpL2;
static_assert(LpMaxFragments <= UINT8_MAX, "");
static_assert(LpMaxFragments < CHAR_BIT * RTE_SIZEOF_FIELD(LpL2, reassBitmap), "");
 
static __rte_always_inline uint64_t
LpL2_GetSeqNum(const LpL2* l2) {
  return l2->seqNumBase + l2->fragIndex;
}

typedef struct __rte_packed_begin LpPitToken {
  uint8_t length;
  uint8_t value[32];
} __rte_packed_end LpPitToken;

__attribute__((nonnull)) static __rte_always_inline void
LpPitToken_Set(LpPitToken* token, uint8_t length, const uint8_t* value) {
  token->length = length;
  rte_memcpy(token->value, value, length);
  memset(RTE_PTR_ADD(token->value, length), 0, sizeof(token->value) - length);
}

__attribute__((nonnull, returns_nonnull)) const char*
LpPitToken_ToString(const LpPitToken* token);

typedef struct LpL3 {
  uint8_t nackReason;
  uint8_t congMark;
  LpPitToken pitToken;
} LpL3;

typedef struct LpHeader {
  LpL3 l3;
  LpL2 l2;
} LpHeader;

__attribute__((nonnull)) bool
LpHeader_Parse(LpHeader* lph, struct rte_mbuf* pkt);

__attribute__((nonnull)) void
LpHeader_Prepend(struct rte_mbuf* pkt, const LpL3* l3, const LpL2* l2);
 
#endif // NDNDPDK_NDN_LP_H