//Generic Networking definitions

#define ETHERNET_MIN_FRAME_SIZE     46
#define ETHERNET_MAC_HEADER_LENGTH  14
#define ETHERNET_ETHERTYPE_OFFSET   12
#define ETHERNET_DATA_OFFSET        14
#define MAC_ADDRESS_LENGTH          6

/*  Ethernet Frame Size.
    Linux uses 1544, OSDev and Shrine use 1548. Based on IEEE 802.3as, max frame size was agreed upon as 2000 bytes. */
#define ETHERNET_FRAME_SIZE 2000

#define HTYPE_ETHERNET  1
#define HLEN_ETHERNET   6
#define PLEN_IPV4       4

#define ETHERTYPE_IPV4  0x0800
#define ETHERTYPE_ARP   0x0806
#define ETHERTYPE_IPV6  0x86DD

#define IP_ADDRESS_LENGTH   4

/*  PCNet reroutes PCI interrupts to software. See PCNet.
    Net Handler interrupt is generated whenever an entry is
    pushed to the NetQueue. See NetHandler. */

/*
#define I_PCNET0        I_USER + 0
#define I_PCNET1        I_USER + 1
#define I_PCNET2        I_USER + 2
#define I_PCNET3        I_USER + 3

#define I_E1000_0       I_USER + 0
#define I_E1000_1       I_USER + 1
#define I_E1000_2       I_USER + 2
#define I_E1000_3       I_USER + 3

#define I_NETHANDLER    I_USER + 4
*/

I64 I_NETHANDLER = IntEntryAlloc;
// TODO: needed across NetHandler & NetQueue,
//       need a dynamic #define.. (I64 allows trashing)

#define INT_DEST_CPU    0