txhdr.h

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#ifndef NDNDPDK_ETHFACE_TXHDR_H
#define NDNDPDK_ETHFACE_TXHDR_H

 
#include "locator.h"
 
typedef enum __rte_packed_begin EthTxHdrAct {
  EthTxHdrActNoHdr = 1,
  EthTxHdrActEther,
 
  EthTxHdrActUdp4Checksum = 0b1010,
  EthTxHdrActUdp4Offload = 0b1011,
  EthTxHdrActUdp6Checksum = 0b1000,
  EthTxHdrActUdp6Offload = 0b1001,
} __rte_packed_end EthTxHdrAct;

typedef enum __rte_packed_begin EthTxHdrFlags {
  EthTxHdrFlagsNewBurst = RTE_BIT32(0),
  EthTxHdrFlagsGtpip = RTE_BIT32(1),
} __rte_packed_end EthTxHdrFlags;
 
typedef struct EthTxHdr EthTxHdr;
typedef void (*EthTxHdr_PrependFunc)(const EthTxHdr* hdr, struct rte_mbuf* m, EthTxHdrFlags flags);
extern const EthTxHdr_PrependFunc EthTxHdr_PrependJmp[];

struct EthTxHdr {
  EthTxHdrAct act;
  uint8_t len;
  uint8_t l2len;
  char tunnel;
  uint8_t buf[EthLocator_MaxHdrLen];
};

__attribute__((nonnull)) void
EthTxHdr_Prepare(EthTxHdr* hdr, const EthLocator* loc, bool hasChecksumOffloads);

__attribute__((nonnull)) static inline void
EthTxHdr_Prepend(const EthTxHdr* hdr, struct rte_mbuf* m, EthTxHdrFlags flags) {
  EthTxHdr_PrependJmp[hdr->act](hdr, m, flags);
}
 
#endif // NDNDPDK_ETHFACE_TXHDR_H