[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/boot/common/src/uboot/include/net.h b/boot/common/src/uboot/include/net.h
new file mode 100644
index 0000000..d810e63
--- /dev/null
+++ b/boot/common/src/uboot/include/net.h
@@ -0,0 +1,700 @@
+/*
+ * LiMon Monitor (LiMon) - Network.
+ *
+ * Copyright 1994 - 2000 Neil Russell.
+ * (See License)
+ *
+ *
+ * History
+ * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
+ */
+
+#ifndef __NET_H__
+#define __NET_H__
+
+#if defined(CONFIG_8xx)
+#include <commproc.h>
+#endif /* CONFIG_8xx */
+
+#include <asm/cache.h>
+#include <asm/byteorder.h> /* for nton* / ntoh* stuff */
+
+#define DEBUG_LL_STATE 0 /* Link local state machine changes */
+#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */
+#define DEBUG_NET_PKT 0 /* Packets on info on the network at large */
+#define DEBUG_INT_STATE 0 /* Internal network state changes */
+
+/*
+ * The number of receive packet buffers, and the required packet buffer
+ * alignment in memory.
+ *
+ */
+
+#ifdef CONFIG_SYS_RX_ETH_BUFFER
+# define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
+#else
+# define PKTBUFSRX 4
+#endif
+
+//#define PKTALIGN ARCH_DMA_MINALIGN
+#define PKTALIGN 64
+/* IPv4 addresses are always 32 bits in size */
+typedef u32 IPaddr_t;
+
+
+/**
+ * An incoming packet handler.
+ * @param pkt pointer to the application packet
+ * @param dport destination UDP port
+ * @param sip source IP address
+ * @param sport source UDP port
+ * @param len packet length
+ */
+typedef void rxhand_f(uchar *pkt, unsigned dport,
+ IPaddr_t sip, unsigned sport,
+ unsigned len);
+
+/**
+ * An incoming ICMP packet handler.
+ * @param type ICMP type
+ * @param code ICMP code
+ * @param dport destination UDP port
+ * @param sip source IP address
+ * @param sport source UDP port
+ * @param pkt pointer to the ICMP packet data
+ * @param len packet length
+ */
+typedef void rxhand_icmp_f(unsigned type, unsigned code, unsigned dport,
+ IPaddr_t sip, unsigned sport, uchar *pkt, unsigned len);
+
+/*
+ * A timeout handler. Called after time interval has expired.
+ */
+typedef void thand_f(void);
+
+enum eth_state_t {
+ ETH_STATE_INIT,
+ ETH_STATE_PASSIVE,
+ ETH_STATE_ACTIVE
+};
+
+struct eth_device {
+ char name[16];
+ unsigned char enetaddr[6];
+ int iobase;
+ int state;
+
+ int (*init) (struct eth_device *, bd_t *);
+ int (*send) (struct eth_device *, void *packet, int length);
+ int (*recv) (struct eth_device *);
+ void (*halt) (struct eth_device *);
+#ifdef CONFIG_MCAST_TFTP
+ int (*mcast) (struct eth_device *, u32 ip, u8 set);
+#endif
+ int (*write_hwaddr) (struct eth_device *);
+ struct eth_device *next;
+ int index;
+ void *priv;
+};
+
+extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
+extern int eth_register(struct eth_device* dev);/* Register network device */
+extern int eth_unregister(struct eth_device *dev);/* Remove network device */
+extern void eth_try_another(int first_restart); /* Change the device */
+extern void eth_set_current(void); /* set nterface to ethcur var */
+
+/* get the current device MAC */
+extern struct eth_device *eth_current;
+
+static inline __attribute__((always_inline))
+struct eth_device *eth_get_dev(void)
+{
+ return eth_current;
+}
+extern struct eth_device *eth_get_dev_by_name(const char *devname);
+extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
+extern int eth_get_dev_index(void); /* get the device index */
+extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
+extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
+extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
+
+/*
+ * Get the hardware address for an ethernet interface .
+ * Args:
+ * base_name - base name for device (normally "eth")
+ * index - device index number (0 for first)
+ * enetaddr - returns 6 byte hardware address
+ * Returns:
+ * Return true if the address is valid.
+ */
+extern int eth_getenv_enetaddr_by_index(const char *base_name, int index,
+ uchar *enetaddr);
+
+#ifdef CONFIG_RANDOM_MACADDR
+/*
+ * The u-boot policy does not allow hardcoded ethernet addresses. Under the
+ * following circumstances a random generated address is allowed:
+ * - in emergency cases, where you need a working network connection to set
+ * the ethernet address.
+ * Eg. you want a rescue boot and don't have a serial port to access the
+ * CLI to set environment variables.
+ *
+ * In these cases, we generate a random locally administered ethernet address.
+ *
+ * Args:
+ * enetaddr - returns 6 byte hardware address
+ */
+extern void eth_random_enetaddr(uchar *enetaddr);
+#endif
+
+extern int usb_eth_initialize(bd_t *bi);
+extern int eth_init(bd_t *bis); /* Initialize the device */
+extern int eth_send(void *packet, int length); /* Send a packet */
+
+#ifdef CONFIG_API
+extern int eth_receive(void *packet, int length); /* Receive a packet*/
+extern void (*push_packet)(void *packet, int length);
+#endif
+extern int eth_rx(void); /* Check for received packets */
+extern void eth_halt(void); /* stop SCC */
+extern char *eth_get_name(void); /* get name of current device */
+
+/* Set active state */
+static inline __attribute__((always_inline)) int eth_init_state_only(bd_t *bis)
+{
+ eth_get_dev()->state = ETH_STATE_ACTIVE;
+
+ return 0;
+}
+/* Set passive state */
+static inline __attribute__((always_inline)) void eth_halt_state_only(void)
+{
+ eth_get_dev()->state = ETH_STATE_PASSIVE;
+}
+
+/*
+ * Set the hardware address for an ethernet interface based on 'eth%daddr'
+ * environment variable (or just 'ethaddr' if eth_number is 0).
+ * Args:
+ * base_name - base name for device (normally "eth")
+ * eth_number - value of %d (0 for first device of this type)
+ * Returns:
+ * 0 is success, non-zero is error status from driver.
+ */
+int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
+ int eth_number);
+
+#ifdef CONFIG_MCAST_TFTP
+int eth_mcast_join(IPaddr_t mcast_addr, u8 join);
+u32 ether_crc(size_t len, unsigned char const *p);
+#endif
+
+
+/**********************************************************************/
+/*
+ * Protocol headers.
+ */
+
+/*
+ * Ethernet header
+ */
+
+struct ethernet_hdr {
+ uchar et_dest[6]; /* Destination node */
+ uchar et_src[6]; /* Source node */
+ ushort et_protlen; /* Protocol or length */
+};
+
+/* Ethernet header size */
+#define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr))
+
+struct e802_hdr {
+ uchar et_dest[6]; /* Destination node */
+ uchar et_src[6]; /* Source node */
+ ushort et_protlen; /* Protocol or length */
+ uchar et_dsap; /* 802 DSAP */
+ uchar et_ssap; /* 802 SSAP */
+ uchar et_ctl; /* 802 control */
+ uchar et_snap1; /* SNAP */
+ uchar et_snap2;
+ uchar et_snap3;
+ ushort et_prot; /* 802 protocol */
+};
+
+/* 802 + SNAP + ethernet header size */
+#define E802_HDR_SIZE (sizeof(struct e802_hdr))
+
+/*
+ * Virtual LAN Ethernet header
+ */
+struct vlan_ethernet_hdr {
+ uchar vet_dest[6]; /* Destination node */
+ uchar vet_src[6]; /* Source node */
+ ushort vet_vlan_type; /* PROT_VLAN */
+ ushort vet_tag; /* TAG of VLAN */
+ ushort vet_type; /* protocol type */
+};
+
+/* VLAN Ethernet header size */
+#define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr))
+
+#define PROT_IP 0x0800 /* IP protocol */
+#define PROT_ARP 0x0806 /* IP ARP protocol */
+#define PROT_RARP 0x8035 /* IP ARP protocol */
+#define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
+
+#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
+#define IPPROTO_UDP 17 /* User Datagram Protocol */
+
+/*
+ * Internet Protocol (IP) header.
+ */
+struct ip_hdr {
+ uchar ip_hl_v; /* header length and version */
+ uchar ip_tos; /* type of service */
+ ushort ip_len; /* total length */
+ ushort ip_id; /* identification */
+ ushort ip_off; /* fragment offset field */
+ uchar ip_ttl; /* time to live */
+ uchar ip_p; /* protocol */
+ ushort ip_sum; /* checksum */
+ IPaddr_t ip_src; /* Source IP address */
+ IPaddr_t ip_dst; /* Destination IP address */
+};
+
+#define IP_OFFS 0x1fff /* ip offset *= 8 */
+#define IP_FLAGS 0xe000 /* first 3 bits */
+#define IP_FLAGS_RES 0x8000 /* reserved */
+#define IP_FLAGS_DFRAG 0x4000 /* don't fragments */
+#define IP_FLAGS_MFRAG 0x2000 /* more fragments */
+
+#define IP_HDR_SIZE (sizeof(struct ip_hdr))
+
+/*
+ * Internet Protocol (IP) + UDP header.
+ */
+struct ip_udp_hdr {
+ uchar ip_hl_v; /* header length and version */
+ uchar ip_tos; /* type of service */
+ ushort ip_len; /* total length */
+ ushort ip_id; /* identification */
+ ushort ip_off; /* fragment offset field */
+ uchar ip_ttl; /* time to live */
+ uchar ip_p; /* protocol */
+ ushort ip_sum; /* checksum */
+ IPaddr_t ip_src; /* Source IP address */
+ IPaddr_t ip_dst; /* Destination IP address */
+ ushort udp_src; /* UDP source port */
+ ushort udp_dst; /* UDP destination port */
+ ushort udp_len; /* Length of UDP packet */
+ ushort udp_xsum; /* Checksum */
+};
+
+#define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr))
+#define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE)
+
+/*
+ * Address Resolution Protocol (ARP) header.
+ */
+struct arp_hdr {
+ ushort ar_hrd; /* Format of hardware address */
+# define ARP_ETHER 1 /* Ethernet hardware address */
+ ushort ar_pro; /* Format of protocol address */
+ uchar ar_hln; /* Length of hardware address */
+# define ARP_HLEN 6
+ uchar ar_pln; /* Length of protocol address */
+# define ARP_PLEN 4
+ ushort ar_op; /* Operation */
+# define ARPOP_REQUEST 1 /* Request to resolve address */
+# define ARPOP_REPLY 2 /* Response to previous request */
+
+# define RARPOP_REQUEST 3 /* Request to resolve address */
+# define RARPOP_REPLY 4 /* Response to previous request */
+
+ /*
+ * The remaining fields are variable in size, according to
+ * the sizes above, and are defined as appropriate for
+ * specific hardware/protocol combinations.
+ */
+ uchar ar_data[0];
+#define ar_sha ar_data[0]
+#define ar_spa ar_data[ARP_HLEN]
+#define ar_tha ar_data[ARP_HLEN + ARP_PLEN]
+#define ar_tpa ar_data[ARP_HLEN + ARP_PLEN + ARP_HLEN]
+#if 0
+ uchar ar_sha[]; /* Sender hardware address */
+ uchar ar_spa[]; /* Sender protocol address */
+ uchar ar_tha[]; /* Target hardware address */
+ uchar ar_tpa[]; /* Target protocol address */
+#endif /* 0 */
+};
+
+#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
+
+/*
+ * ICMP stuff (just enough to handle (host) redirect messages)
+ */
+#define ICMP_ECHO_REPLY 0 /* Echo reply */
+#define ICMP_NOT_REACH 3 /* Detination unreachable */
+#define ICMP_REDIRECT 5 /* Redirect (change route) */
+#define ICMP_ECHO_REQUEST 8 /* Echo request */
+
+/* Codes for REDIRECT. */
+#define ICMP_REDIR_NET 0 /* Redirect Net */
+#define ICMP_REDIR_HOST 1 /* Redirect Host */
+
+/* Codes for NOT_REACH */
+#define ICMP_NOT_REACH_PORT 3 /* Port unreachable */
+
+struct icmp_hdr {
+ uchar type;
+ uchar code;
+ ushort checksum;
+ union {
+ struct {
+ ushort id;
+ ushort sequence;
+ } echo;
+ ulong gateway;
+ struct {
+ ushort __unused;
+ ushort mtu;
+ } frag;
+ uchar data[0];
+ } un;
+};
+
+#define ICMP_HDR_SIZE (sizeof(struct icmp_hdr))
+#define IP_ICMP_HDR_SIZE (IP_HDR_SIZE + ICMP_HDR_SIZE)
+
+/*
+ * Maximum packet size; used to allocate packet storage.
+ * TFTP packets can be 524 bytes + IP header + ethernet header.
+ * Lets be conservative, and go for 38 * 16. (Must also be
+ * a multiple of 32 bytes).
+ */
+/*
+ * AS.HARNOIS : Better to set PKTSIZE to maximum size because
+ * traffic type is not always controlled
+ * maximum packet size = 1518
+ * maximum packet size and multiple of 32 bytes = 1536
+ */
+#define PKTSIZE 1518
+#define PKTSIZE_ALIGN 1536
+/*#define PKTSIZE 608*/
+
+/*
+ * Maximum receive ring size; that is, the number of packets
+ * we can buffer before overflow happens. Basically, this just
+ * needs to be enough to prevent a packet being discarded while
+ * we are processing the previous one.
+ */
+#define RINGSZ 4
+#define RINGSZ_LOG2 2
+
+/**********************************************************************/
+/*
+ * Globals.
+ *
+ * Note:
+ *
+ * All variables of type IPaddr_t are stored in NETWORK byte order
+ * (big endian).
+ */
+
+/* net.c */
+/** BOOTP EXTENTIONS **/
+extern IPaddr_t NetOurGatewayIP; /* Our gateway IP address */
+extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown) */
+extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown) */
+#if defined(CONFIG_BOOTP_DNS2)
+extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown) */
+#endif
+extern char NetOurNISDomain[32]; /* Our NIS domain */
+extern char NetOurHostName[32]; /* Our hostname */
+extern char NetOurRootPath[64]; /* Our root path */
+extern ushort NetBootFileSize; /* Our boot file size in blocks */
+/** END OF BOOTP EXTENTIONS **/
+extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
+extern uchar NetOurEther[6]; /* Our ethernet address */
+extern uchar NetServerEther[6]; /* Boot server enet address */
+extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
+extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
+extern uchar *NetTxPacket; /* THE transmit packet */
+extern uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
+extern uchar *NetRxPacket; /* Current receive packet */
+extern int NetRxPacketLen; /* Current rx packet length */
+extern unsigned NetIPID; /* IP ID (counting) */
+extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
+extern uchar NetEtherNullAddr[6];
+
+#define VLAN_NONE 4095 /* untagged */
+#define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
+extern ushort NetOurVLAN; /* Our VLAN */
+extern ushort NetOurNativeVLAN; /* Our Native VLAN */
+
+extern int NetRestartWrap; /* Tried all network devices */
+
+enum proto_t {
+ BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP,
+ TFTPSRV, TFTPPUT, LINKLOCAL
+};
+
+/* from net/net.c */
+extern char BootFile[128]; /* Boot File name */
+
+#if defined(CONFIG_CMD_DNS)
+extern char *NetDNSResolve; /* The host to resolve */
+extern char *NetDNSenvvar; /* the env var to put the ip into */
+#endif
+
+#if defined(CONFIG_CMD_PING)
+extern IPaddr_t NetPingIP; /* the ip address to ping */
+#endif
+
+#if defined(CONFIG_CMD_CDP)
+/* when CDP completes these hold the return values */
+extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
+extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
+
+/*
+ * Check for a CDP packet by examining the received MAC address field
+ */
+static inline int is_cdp_packet(const uchar *et_addr)
+{
+ extern const uchar NetCDPAddr[6];
+
+ return memcmp(et_addr, NetCDPAddr, 6) == 0;
+}
+#endif
+
+#if defined(CONFIG_CMD_SNTP)
+extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
+extern int NetTimeOffset; /* offset time from UTC */
+#endif
+
+#if defined(CONFIG_MCAST_TFTP)
+extern IPaddr_t Mcast_addr;
+#endif
+
+/* Initialize the network adapter */
+extern void net_init(void);
+extern int NetLoop(enum proto_t);
+
+/* Shutdown adapters and cleanup */
+extern void NetStop(void);
+
+/* Load failed. Start again. */
+extern void NetStartAgain(void);
+
+/* Get size of the ethernet header when we send */
+extern int NetEthHdrSize(void);
+
+/* Set ethernet header; returns the size of the header */
+extern int NetSetEther(uchar *, uchar *, uint);
+extern int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot);
+
+/* Set IP header */
+extern void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source);
+extern void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport,
+ int sport, int len);
+
+/* Checksum */
+extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
+extern uint NetCksum(uchar *, int); /* Calculate the checksum */
+
+/* Callbacks */
+extern rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */
+extern void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */
+extern rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */
+extern void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */
+extern void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */
+extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
+
+/* Network loop state */
+enum net_loop_state {
+ NETLOOP_CONTINUE,
+ NETLOOP_RESTART,
+ NETLOOP_SUCCESS,
+ NETLOOP_FAIL
+};
+extern enum net_loop_state net_state;
+
+static inline void net_set_state(enum net_loop_state state)
+{
+ debug_cond(DEBUG_INT_STATE, "--- NetState set to %d\n", state);
+ net_state = state;
+}
+
+/* Transmit a packet */
+static inline void NetSendPacket(uchar *pkt, int len)
+{
+ (void) eth_send(pkt, len);
+}
+
+/*
+ * Transmit "NetTxPacket" as UDP packet, performing ARP request if needed
+ * (ether will be populated)
+ *
+ * @param ether Raw packet buffer
+ * @param dest IP address to send the datagram to
+ * @param dport Destination UDP port
+ * @param sport Source UDP port
+ * @param payload_len Length of data after the UDP header
+ */
+extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport,
+ int sport, int payload_len);
+
+/* Processes a received packet */
+extern void NetReceive(uchar *, int);
+
+#ifdef CONFIG_NETCONSOLE
+void NcStart(void);
+int nc_input_packet(uchar *pkt, IPaddr_t src_ip, unsigned dest_port,
+ unsigned src_port, unsigned len);
+#endif
+
+static inline __attribute__((always_inline)) int eth_is_on_demand_init(void)
+{
+#ifdef CONFIG_NETCONSOLE
+ extern enum proto_t net_loop_last_protocol;
+
+ return net_loop_last_protocol != NETCONS;
+#else
+ return 1;
+#endif
+}
+
+static inline void eth_set_last_protocol(int protocol)
+{
+#ifdef CONFIG_NETCONSOLE
+ extern enum proto_t net_loop_last_protocol;
+
+ net_loop_last_protocol = protocol;
+#endif
+}
+
+/*
+ * Check if autoload is enabled. If so, use either NFS or TFTP to download
+ * the boot file.
+ */
+void net_auto_load(void);
+
+/*
+ * The following functions are a bit ugly, but necessary to deal with
+ * alignment restrictions on ARM.
+ *
+ * We're using inline functions, which had the smallest memory
+ * footprint in our tests.
+ */
+/* return IP *in network byteorder* */
+static inline IPaddr_t NetReadIP(void *from)
+{
+ IPaddr_t ip;
+
+ memcpy((void *)&ip, (void *)from, sizeof(ip));
+ return ip;
+}
+
+/* return ulong *in network byteorder* */
+static inline ulong NetReadLong(ulong *from)
+{
+ ulong l;
+
+ memcpy((void *)&l, (void *)from, sizeof(l));
+ return l;
+}
+
+/* write IP *in network byteorder* */
+static inline void NetWriteIP(void *to, IPaddr_t ip)
+{
+ memcpy(to, (void *)&ip, sizeof(ip));
+}
+
+/* copy IP */
+static inline void NetCopyIP(void *to, void *from)
+{
+ memcpy((void *)to, from, sizeof(IPaddr_t));
+}
+
+/* copy ulong */
+static inline void NetCopyLong(ulong *to, ulong *from)
+{
+ memcpy((void *)to, (void *)from, sizeof(ulong));
+}
+
+/**
+ * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is all zeroes.
+ */
+static inline int is_zero_ether_addr(const u8 *addr)
+{
+ return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
+}
+
+/**
+ * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is a multicast address.
+ * By definition the broadcast address is also a multicast address.
+ */
+static inline int is_multicast_ether_addr(const u8 *addr)
+{
+ return 0x01 & addr[0];
+}
+
+/*
+ * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is the broadcast address.
+ */
+static inline int is_broadcast_ether_addr(const u8 *addr)
+{
+ return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) ==
+ 0xff;
+}
+
+/*
+ * is_valid_ether_addr - Determine if the given Ethernet address is valid
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
+ * a multicast address, and is not FF:FF:FF:FF:FF:FF.
+ *
+ * Return true if the address is valid.
+ */
+static inline int is_valid_ether_addr(const u8 *addr)
+{
+ /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
+ * explicitly check for it here. */
+ return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
+}
+
+/* Convert an IP address to a string */
+extern void ip_to_string(IPaddr_t x, char *s);
+
+/* Convert a string to ip address */
+extern IPaddr_t string_to_ip(const char *s);
+
+/* Convert a VLAN id to a string */
+extern void VLAN_to_string(ushort x, char *s);
+
+/* Convert a string to a vlan id */
+extern ushort string_to_VLAN(const char *s);
+
+/* read a VLAN id from an environment variable */
+extern ushort getenv_VLAN(char *);
+
+/* copy a filename (allow for "..." notation, limit length) */
+extern void copy_filename(char *dst, const char *src, int size);
+
+/* get a random source port */
+extern unsigned int random_port(void);
+
+/**********************************************************************/
+
+#endif /* __NET_H__ */