ARP.hpp

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#ifndef DPDKLIBS_INCLUDE_DPDKLIBS_ARP_ARP_HPP_
#define DPDKLIBS_INCLUDE_DPDKLIBS_ARP_ARP_HPP_
 
#include <cstdint>
#include <rte_mbuf.h>
#include "dpdklibs/udp/Utils.hpp"
 
namespace dunedaq {
namespace dpdklibs {
namespace arp {
 
// RARP and ARP opcodes
enum {
  ARP_REQUEST    = 1,
  ARP_REPLY      = 2,
  RARP_REQUEST   = 3, 
  RARP_REPLY     = 4,
  GRATUITOUS_ARP = 5
};
 
// Queue flags
enum {
  CLEAR_FAST_ALLOC_FLAG = 0x00000001, // < Clear the TX fast alloc flag
  DO_TX_FLUSH           = 0x00000002  // Do a TX Flush by sending all of the pkts in the queue
};
 
// ethSwap(u16_t * to, u16_t * from) - Swap two 16 bit values 
inline void
uint16Swap(void *t, void *f) {
  uint16_t *d = (uint16_t *)t;
  uint16_t *s = (uint16_t *)f;
  uint16_t v;
  v = *d; 
  *d = *s; 
  *s = v;
}
 
// ethAddrSwap( u16_t * to, u16_t * from ) - Swap two ethernet addresses
inline void
ethAddrSwap(void *t, void *f) {
  uint16_t *d = (uint16_t *)t;
  uint16_t *s = (uint16_t *)f;
  uint16Swap(d++, s++);
  uint16Swap(d++, s++);
  uint16Swap(d, s);
}
 
// inetAddrSwap( void * t, void * f ) - Swap two IPv4 addresses
inline void
inetAddrSwap(void *t, void *f) {
  uint32_t *d = (uint32_t *)t;
  uint32_t *s = (uint32_t *)f;
  uint32_t v;
  v = *d; 
  *d = *s; 
  *s = v;
}
 
/* inetAddrCopy( void * t, void * f ) - Copy IPv4 address */
inline void
inetAddrCopy(void *t, void *f) {
    uint32_t *d = (uint32_t *)t;
    uint32_t *s = (uint32_t *)f;
 
    *d = *s;
}
 
// Send GARP
void pktgen_send_garp(struct rte_mbuf *m, uint32_t port_id, rte_be32_t binary_ip_address);
 
// Reply to ARP
void pktgen_process_arp(struct rte_mbuf *m, uint32_t pid, rte_be32_t binary_ip_address);
 
} // namespace arp
} // namespace dpdklibs
} // namespace dunedaq
 
#endif // DPDKLIBS_INCLUDE_DPDKLIBS_ARP_ARP_HPP_