86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
#ifndef _GPXE_IP_H
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#define _GPXE_IP_H
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/** @file
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*
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* IP protocol
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*
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*/
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#include <ip.h>
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#include <gpxe/retry.h>
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/* IP constants */
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#define IP_VER 0x40U
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#define IP_MASK_VER 0xf0U
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#define IP_MASK_HLEN 0x0fU
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#define IP_MASK_OFFSET 0x1fffU
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#define IP_MASK_DONOTFRAG 0x4000U
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#define IP_MASK_MOREFRAGS 0x2000U
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#define IP_PSHLEN 12
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/* IP header defaults */
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#define IP_TOS 0
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#define IP_TTL 64
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#define IP_FRAG_IOB_SIZE 1500
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#define IP_FRAG_TIMEOUT 50
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/* IP4 pseudo header */
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struct ipv4_pseudo_header {
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struct in_addr src;
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struct in_addr dest;
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uint8_t zero_padding;
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uint8_t protocol;
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uint16_t len;
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};
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/** An IPv4 address/routing table entry */
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struct ipv4_miniroute {
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/** List of miniroutes */
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struct list_head list;
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/** Network device */
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struct net_device *netdev;
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/** IPv4 address */
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struct in_addr address;
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/** Subnet mask */
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struct in_addr netmask;
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/** Gateway address */
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struct in_addr gateway;
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};
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/* Fragment reassembly buffer */
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struct frag_buffer {
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/* Identification number */
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uint16_t ident;
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/* Source network address */
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struct in_addr src;
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/* Destination network address */
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struct in_addr dest;
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/* Reassembled I/O buffer */
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struct io_buffer *frag_iob;
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/* Reassembly timer */
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struct retry_timer frag_timer;
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/* List of fragment reassembly buffers */
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struct list_head list;
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};
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struct io_buffer;
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struct net_device;
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struct net_protocol;
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struct tcpip_protocol;
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extern struct list_head ipv4_miniroutes;
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extern struct net_protocol ipv4_protocol;
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extern int add_ipv4_address ( struct net_device *netdev,
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struct in_addr address, struct in_addr netmask,
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struct in_addr gateway );
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extern void del_ipv4_address ( struct net_device *netdev );
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#endif /* _GPXE_IP_H */
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