diff options
Diffstat (limited to 'newlib/libc/sys/linux/include/net/ethernet.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/net/ethernet.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/include/net/ethernet.h b/newlib/libc/sys/linux/include/net/ethernet.h new file mode 100644 index 000000000..6b1d1c9be --- /dev/null +++ b/newlib/libc/sys/linux/include/net/ethernet.h @@ -0,0 +1,134 @@ +/* + * Fundamental constants relating to ethernet. + * + * $FreeBSD: src/sys/net/ethernet.h,v 1.20 2002/04/04 05:42:09 luigi Exp $ + * + */ + +#ifndef _NET_ETHERNET_H_ +#define _NET_ETHERNET_H_ + +/* + * The number of bytes in an ethernet (MAC) address. + */ +#define ETHER_ADDR_LEN 6 + +/* + * The number of bytes in the type field. + */ +#define ETHER_TYPE_LEN 2 + +/* + * The number of bytes in the trailing CRC field. + */ +#define ETHER_CRC_LEN 4 + +/* + * The length of the combined header. + */ +#define ETHER_HDR_LEN (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN) + +/* + * The minimum packet length. + */ +#define ETHER_MIN_LEN 64 + +/* + * The maximum packet length. + */ +#define ETHER_MAX_LEN 1518 + +/* + * A macro to validate a length with + */ +#define ETHER_IS_VALID_LEN(foo) \ + ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) + +/* + * Structure of a 10Mb/s Ethernet header. + */ +struct ether_header { + u_char ether_dhost[ETHER_ADDR_LEN]; + u_char ether_shost[ETHER_ADDR_LEN]; + u_short ether_type; +}; + +/* + * Structure of a 48-bit Ethernet address. + */ +struct ether_addr { + u_char octet[ETHER_ADDR_LEN]; +}; + +#define ETHERTYPE_PUP 0x0200 /* PUP protocol */ +#define ETHERTYPE_IP 0x0800 /* IP protocol */ +#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ +#define ETHERTYPE_REVARP 0x8035 /* reverse Addr. resolution protocol */ +#define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging */ +#define ETHERTYPE_IPV6 0x86dd /* IPv6 */ +#define ETHERTYPE_LOOPBACK 0x9000 /* used to test interfaces */ +/* XXX - add more useful types here */ + +/* + * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have + * (type-ETHERTYPE_TRAIL)*512 bytes of data followed + * by an ETHER type (as given above) and then the (variable-length) header. + */ +#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */ +#define ETHERTYPE_NTRAILER 16 + +#define ETHERMTU (ETHER_MAX_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) +#define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) + +#ifdef _KERNEL + +/* + * For device drivers to specify whether they support BPF or not + */ +#define ETHER_BPF_UNSUPPORTED 0 +#define ETHER_BPF_SUPPORTED 1 + +struct ifnet; +struct mbuf; + +extern void (*ng_ether_input_p)(struct ifnet *ifp, + struct mbuf **mp, struct ether_header *eh); +extern void (*ng_ether_input_orphan_p)(struct ifnet *ifp, + struct mbuf *m, struct ether_header *eh); +extern int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); +extern void (*ng_ether_attach_p)(struct ifnet *ifp); +extern void (*ng_ether_detach_p)(struct ifnet *ifp); + +extern int (*vlan_input_p)(struct ether_header *eh, struct mbuf *m); +extern int (*vlan_input_tag_p)(struct ether_header *eh, struct mbuf *m, + u_int16_t t); + +#define VLAN_INPUT_TAG(eh, m, t) do { \ + /* XXX: lock */ \ + if (vlan_input_tag_p != NULL) \ + (*vlan_input_tag_p)(eh, m, t); \ + else { \ + (m)->m_pkthdr.rcvif->if_noproto++; \ + m_freem(m); \ + } \ + /* XXX: unlock */ \ +} while (0) + +#else /* _KERNEL */ + +#include <sys/cdefs.h> + +/* + * Ethernet address conversion/parsing routines. + */ +__BEGIN_DECLS +struct ether_addr *ether_aton(const char *); +int ether_hostton(const char *, struct ether_addr *); +int ether_line(const char *, struct ether_addr *, char *); +char *ether_ntoa(const struct ether_addr *); +int ether_ntohost(char *, const struct ether_addr *); +__END_DECLS + +#endif /* !_KERNEL */ + +#endif /* !_NET_ETHERNET_H_ */ |