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etharp_hdr struct
the ARP message, see RFC 826 ("Packet format")
Syntax
struct etharp_hdr
{
PACK_STRUCT_FIELD(u16_t hwtype);
PACK_STRUCT_FIELD(u16_t proto);
PACK_STRUCT_FLD_8(u8_t hwlen);
PACK_STRUCT_FLD_8(u8_t protolen);
PACK_STRUCT_FIELD(u16_t opcode);
PACK_STRUCT_FLD_S(struct eth_addr shwaddr);
PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned sipaddr);
PACK_STRUCT_FLD_S(struct eth_addr dhwaddr);
PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned dipaddr);
};