mirror of
https://git.proxmox.com/git/grub2
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10830203a0
* include/grub/net/arp.h: added arp header, arp cache entry and related constants and functions * net/arp.c: added functions arp_init_table, arp_find_entry, arp_resolve and arp_receive * net/ethernet.c (send_ethernet_packet): replaced hardcoded hardware address by parameter target_addr * net/ethernet.c (recv_ethernet_packet): added call to arp_receive when packet is of type 0x803 (ARP) and only return when packet is of type determined by parameter ethertype * net/ip.c (send_ip_packet): added call to arp_resolve to determine hardware address of destination * net/netbuff.c (grub_netbuff_alloc): fixed swapped parameters in call to grub_memalign
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef GRUB_NET_ARP_HEADER
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#define GRUB_NET_ARP_HEADER 1
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#include <grub/misc.h>
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#include <grub/net.h>
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#include <grub/net/protocol.h>
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/* IANA ARP constant to define hardware type as ethernet */
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#define ARPHRD_ETHERNET 1
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/* IANA Ethertype */
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#define ARP_ETHERTYPE 0x806
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/* Size for cache table */
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#define SIZE_ARP_TABLE 5
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/* ARP header operation codes */
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#define ARP_REQUEST 1
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#define ARP_REPLY 2
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struct arp_entry {
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grub_uint8_t avail;
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struct grub_net_network_layer_protocol *nl_protocol;
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struct grub_net_link_layer_protocol *ll_protocol;
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struct grub_net_addr nl_address;
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struct grub_net_addr ll_address;
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};
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struct arphdr {
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grub_uint16_t hrd;
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grub_uint16_t pro;
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grub_uint8_t hln;
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grub_uint8_t pln;
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grub_uint16_t op;
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} __attribute__ ((packed));
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extern grub_err_t arp_receive(struct grub_net_network_layer_interface *inf __attribute__ ((unused)),
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struct grub_net_network_link_interface *net_link_inf, struct grub_net_buff *nb);
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extern grub_err_t arp_resolve(struct grub_net_network_layer_interface *inf __attribute__ ((unused)),
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struct grub_net_network_link_interface *net_link_inf, struct grub_net_addr *proto_addr,
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struct grub_net_addr *hw_addr);
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#endif
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