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Allow packet transmission to be deferred pending successful ARP resolution. This avoids the time spent waiting for a higher-level protocol (e.g. TCP or TFTP) to attempt retransmission. Signed-off-by: Michael Brown <mcb30@ipxe.org>
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#ifndef _IPXE_ARP_H
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#define _IPXE_ARP_H
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/** @file
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*
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* Address Resolution Protocol
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <ipxe/tables.h>
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#include <ipxe/netdevice.h>
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/** A network-layer protocol that relies upon ARP */
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struct arp_net_protocol {
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/** Network-layer protocol */
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struct net_protocol *net_protocol;
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/** Check existence of address
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*
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* @v netdev Network device
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* @v net_addr Network-layer address
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* @ret rc Return status code
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*/
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int ( * check ) ( struct net_device *netdev,
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const void *net_addr );
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};
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/** ARP protocol table */
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#define ARP_NET_PROTOCOLS \
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__table ( struct arp_net_protocol, "arp_net_protocols" )
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/** Declare an ARP protocol */
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#define __arp_net_protocol __table_entry ( ARP_NET_PROTOCOLS, 01 )
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extern struct net_protocol arp_protocol __net_protocol;
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extern int arp_tx ( struct io_buffer *iobuf, struct net_device *netdev,
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struct net_protocol *net_protocol, const void *net_dest,
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const void *net_source, const void *ll_source );
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#endif /* _IPXE_ARP_H */
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