-/* $NetBSD: if_ether.h,v 1.58 2010/05/19 20:41:59 christos Exp $ */
+/* $NetBSD: if_ether.h,v 1.59 2012/09/30 05:08:08 dholland Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
#ifndef _NET_IF_ETHER_H_
#define _NET_IF_ETHER_H_
+#ifdef _KERNEL
+#ifdef _KERNEL_OPT
+#include "opt_mbuftrace.h"
+#endif
+#include <sys/mbuf.h>
+#endif
+
+#ifndef _STANDALONE
+#include <net/if.h>
+#endif
+
/*
* Some basic Ethernet constants.
*/
uint8_t ether_addr_octet[ETHER_ADDR_LEN];
} __packed;
+#ifdef __minix
+#define ea_addr ether_addr_octet
+typedef struct ether_addr ether_addr_t;
+#endif
+
/*
* Structure of a 10Mb/s Ethernet header.
*/
#define ETHER_CRC_POLY_LE 0xedb88320
#define ETHER_CRC_POLY_BE 0x04c11db6
+#ifndef _STANDALONE
+
+/*
+ * Ethernet-specific mbuf flags.
+ */
+#define M_HASFCS M_LINK0 /* FCS included at end of frame */
+#define M_PROMISC M_LINK1 /* this packet is not for us */
+
+#ifdef _KERNEL
+/*
+ * Macro to map an IP multicast address to an Ethernet multicast address.
+ * The high-order 25 bits of the Ethernet address are statically assigned,
+ * and the low-order 23 bits are taken from the low end of the IP address.
+ */
+#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
+ /* const struct in_addr *ipaddr; */ \
+ /* uint8_t enaddr[ETHER_ADDR_LEN]; */ \
+do { \
+ (enaddr)[0] = 0x01; \
+ (enaddr)[1] = 0x00; \
+ (enaddr)[2] = 0x5e; \
+ (enaddr)[3] = ((const uint8_t *)ipaddr)[1] & 0x7f; \
+ (enaddr)[4] = ((const uint8_t *)ipaddr)[2]; \
+ (enaddr)[5] = ((const uint8_t *)ipaddr)[3]; \
+} while (/*CONSTCOND*/0)
+/*
+ * Macro to map an IP6 multicast address to an Ethernet multicast address.
+ * The high-order 16 bits of the Ethernet address are statically assigned,
+ * and the low-order 32 bits are taken from the low end of the IP6 address.
+ */
+#define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \
+ /* struct in6_addr *ip6addr; */ \
+ /* uint8_t enaddr[ETHER_ADDR_LEN]; */ \
+{ \
+ (enaddr)[0] = 0x33; \
+ (enaddr)[1] = 0x33; \
+ (enaddr)[2] = ((const uint8_t *)ip6addr)[12]; \
+ (enaddr)[3] = ((const uint8_t *)ip6addr)[13]; \
+ (enaddr)[4] = ((const uint8_t *)ip6addr)[14]; \
+ (enaddr)[5] = ((const uint8_t *)ip6addr)[15]; \
+}
+#endif
+
+struct mii_data;
+
+struct ethercom;
+
+typedef int (*ether_cb_t)(struct ethercom *);
+
+#ifndef __minix
+/*
+ * Structure shared between the ethernet driver modules and
+ * the multicast list code. For example, each ec_softc or il_softc
+ * begins with this structure.
+ */
+struct ethercom {
+ struct ifnet ec_if; /* network-visible interface */
+ LIST_HEAD(, ether_multi) ec_multiaddrs; /* list of ether multicast
+ addrs */
+ int ec_multicnt; /* length of ec_multiaddrs
+ list */
+ int ec_capabilities; /* capabilities, provided by
+ driver */
+ int ec_capenable; /* tells hardware which
+ capabilities to enable */
+
+ int ec_nvlans; /* # VLANs on this interface */
+ /* The device handle for the MII bus child device. */
+ struct mii_data *ec_mii;
+ /* Called after a change to ec_if.if_flags. Returns
+ * ENETRESET if the device should be reinitialized with
+ * ec_if.if_init, 0 on success, not 0 on failure.
+ */
+ ether_cb_t ec_ifflags_cb;
+#ifdef MBUFTRACE
+ struct mowner ec_rx_mowner; /* mbufs received */
+ struct mowner ec_tx_mowner; /* mbufs transmitted */
+#endif
+};
+#endif
+
+#define ETHERCAP_VLAN_MTU 0x00000001 /* VLAN-compatible MTU */
+#define ETHERCAP_VLAN_HWTAGGING 0x00000002 /* hardware VLAN tag support */
+#define ETHERCAP_JUMBO_MTU 0x00000004 /* 9000 byte MTU supported */
+
+#ifdef _KERNEL
+extern const uint8_t etherbroadcastaddr[ETHER_ADDR_LEN];
+extern const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN];
+extern const uint8_t ether_ipmulticast_min[ETHER_ADDR_LEN];
+extern const uint8_t ether_ipmulticast_max[ETHER_ADDR_LEN];
+
+void ether_set_ifflags_cb(struct ethercom *, ether_cb_t);
+int ether_ioctl(struct ifnet *, u_long, void *);
+int ether_addmulti(const struct sockaddr *, struct ethercom *);
+int ether_delmulti(const struct sockaddr *, struct ethercom *);
+int ether_multiaddr(const struct sockaddr *, uint8_t[], uint8_t[]);
+#endif /* _KERNEL */
+
+#ifndef __minix
+/*
+ * Ethernet multicast address structure. There is one of these for each
+ * multicast address or range of multicast addresses that we are supposed
+ * to listen to on a particular interface. They are kept in a linked list,
+ * rooted in the interface's ethercom structure.
+ */
+struct ether_multi {
+ uint8_t enm_addrlo[ETHER_ADDR_LEN]; /* low or only address of range */
+ uint8_t enm_addrhi[ETHER_ADDR_LEN]; /* high or only address of range */
+ u_int enm_refcount; /* no. claims to this addr/range */
+ LIST_ENTRY(ether_multi) enm_list;
+};
+#endif
+
+/*
+ * Structure used by macros below to remember position when stepping through
+ * all of the ether_multi records.
+ */
+struct ether_multistep {
+ struct ether_multi *e_enm;
+};
+
+/*
+ * Macro for looking up the ether_multi record for a given range of Ethernet
+ * multicast addresses connected to a given ethercom structure. If no matching
+ * record is found, "enm" returns NULL.
+ */
+#define ETHER_LOOKUP_MULTI(addrlo, addrhi, ec, enm) \
+ /* uint8_t addrlo[ETHER_ADDR_LEN]; */ \
+ /* uint8_t addrhi[ETHER_ADDR_LEN]; */ \
+ /* struct ethercom *ec; */ \
+ /* struct ether_multi *enm; */ \
+{ \
+ for ((enm) = LIST_FIRST(&(ec)->ec_multiaddrs); \
+ (enm) != NULL && \
+ (memcmp((enm)->enm_addrlo, (addrlo), ETHER_ADDR_LEN) != 0 || \
+ memcmp((enm)->enm_addrhi, (addrhi), ETHER_ADDR_LEN) != 0); \
+ (enm) = LIST_NEXT((enm), enm_list)); \
+}
+
+/*
+ * Macro to step through all of the ether_multi records, one at a time.
+ * The current position is remembered in "step", which the caller must
+ * provide. ETHER_FIRST_MULTI(), below, must be called to initialize "step"
+ * and get the first record. Both macros return a NULL "enm" when there
+ * are no remaining records.
+ */
+#define ETHER_NEXT_MULTI(step, enm) \
+ /* struct ether_multistep step; */ \
+ /* struct ether_multi *enm; */ \
+{ \
+ if (((enm) = (step).e_enm) != NULL) \
+ (step).e_enm = LIST_NEXT((enm), enm_list); \
+}
+
+#define ETHER_FIRST_MULTI(step, ec, enm) \
+ /* struct ether_multistep step; */ \
+ /* struct ethercom *ec; */ \
+ /* struct ether_multi *enm; */ \
+{ \
+ (step).e_enm = LIST_FIRST(&(ec)->ec_multiaddrs); \
+ ETHER_NEXT_MULTI((step), (enm)); \
+}
+
+#ifdef _KERNEL
+
+/*
+ * Ethernet 802.1Q VLAN structures.
+ */
+
+/* add VLAN tag to input/received packet */
+static inline int vlan_input_tag(struct ifnet *, struct mbuf *, u_int);
+static inline int
+vlan_input_tag(struct ifnet *ifp, struct mbuf *m, u_int vlanid)
+{
+ struct m_tag *mtag;
+ mtag = m_tag_get(PACKET_TAG_VLAN, sizeof(u_int), M_NOWAIT);
+ if (mtag == NULL) {
+ ifp->if_ierrors++;
+ printf("%s: unable to allocate VLAN tag\n", ifp->if_xname);
+ m_freem(m);
+ return 1;
+ }
+ *(u_int *)(mtag + 1) = vlanid;
+ m_tag_prepend(m, mtag);
+ return 0;
+}
+
+#define VLAN_INPUT_TAG(ifp, m, vlanid, _errcase) \
+ if (vlan_input_tag(ifp, m, vlanid) != 0) { \
+ _errcase; \
+ }
+
+/* extract VLAN tag from output/trasmit packet */
+#define VLAN_OUTPUT_TAG(ec, m0) \
+ (VLAN_ATTACHED(ec) ? m_tag_find((m0), PACKET_TAG_VLAN, NULL) : NULL)
+
+/* extract VLAN ID value from a VLAN tag */
+#define VLAN_TAG_VALUE(mtag) \
+ ((*(u_int *)(mtag + 1)) & 4095)
+
+/* test if any VLAN is configured for this interface */
+#define VLAN_ATTACHED(ec) ((ec)->ec_nvlans > 0)
+
+void ether_ifattach(struct ifnet *, const uint8_t *);
+void ether_ifdetach(struct ifnet *);
+int ether_mediachange(struct ifnet *);
+void ether_mediastatus(struct ifnet *, struct ifmediareq *);
+
+char *ether_sprintf(const uint8_t *);
+char *ether_snprintf(char *, size_t, const uint8_t *);
+
+uint32_t ether_crc32_le(const uint8_t *, size_t);
+uint32_t ether_crc32_be(const uint8_t *, size_t);
+
+int ether_aton_r(u_char *, size_t, const char *);
+#else
/*
* Prototype ethers(3) functions.
*/
int ether_hostton(const char *, struct ether_addr *);
int ether_line(const char *, struct ether_addr *, char *);
__END_DECLS
+#endif
+
+#endif /* _STANDALONE */
#endif /* !_NET_IF_ETHER_H_ */