2 * LiMon Monitor (LiMon) - Network.
4 * Copyright 1994 - 2000 Neil Russell.
6 * SPDX-License-Identifier: GPL-2.0
9 * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
15 #if defined(CONFIG_8xx)
17 #endif /* CONFIG_8xx */
19 #include <asm/cache.h>
20 #include <asm/byteorder.h> /* for nton* / ntoh* stuff */
22 #define DEBUG_LL_STATE 0 /* Link local state machine changes */
23 #define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */
24 #define DEBUG_NET_PKT 0 /* Packets on info on the network at large */
25 #define DEBUG_INT_STATE 0 /* Internal network state changes */
28 * The number of receive packet buffers, and the required packet buffer
29 * alignment in memory.
33 #ifdef CONFIG_SYS_RX_ETH_BUFFER
34 # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
39 #define PKTALIGN ARCH_DMA_MINALIGN
41 /* ARP hardware address length */
44 * The size of a MAC address in string form, each digit requires two chars
45 * and five separator characters to form '00:00:00:00:00:00'.
47 #define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1)
49 /* IPv4 addresses are always 32 bits in size */
55 * An incoming packet handler.
56 * @param pkt pointer to the application packet
57 * @param dport destination UDP port
58 * @param sip source IP address
59 * @param sport source UDP port
60 * @param len packet length
62 typedef void rxhand_f(uchar
*pkt
, unsigned dport
,
63 struct in_addr sip
, unsigned sport
,
67 * An incoming ICMP packet handler.
68 * @param type ICMP type
69 * @param code ICMP code
70 * @param dport destination UDP port
71 * @param sip source IP address
72 * @param sport source UDP port
73 * @param pkt pointer to the ICMP packet data
74 * @param len packet length
76 typedef void rxhand_icmp_f(unsigned type
, unsigned code
, unsigned dport
,
77 struct in_addr sip
, unsigned sport
, uchar
*pkt
, unsigned len
);
80 * A timeout handler. Called after time interval has expired.
82 typedef void thand_f(void);
92 * struct eth_pdata - Platform data for Ethernet MAC controllers
94 * @iobase: The base address of the hardware registers
95 * @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env
96 * @phy_interface: PHY interface to use - see PHY_INTERFACE_MODE_...
97 * @max_speed: Maximum speed of Ethernet connection supported by MAC
101 unsigned char enetaddr
[ARP_HLEN
];
106 enum eth_recv_flags
{
108 * Check hardware device for new packets (otherwise only return those
109 * which are already in the memory buffer ready to process)
111 ETH_RECV_CHECK_DEVICE
= 1 << 0,
115 * struct eth_ops - functions of Ethernet MAC controllers
117 * start: Prepare the hardware to send and receive packets
118 * send: Send the bytes passed in "packet" as a packet on the wire
119 * recv: Check if the hardware received a packet. If so, set the pointer to the
120 * packet buffer in the packetp parameter. If not, return an error or 0 to
121 * indicate that the hardware receive FIFO is empty. If 0 is returned, the
122 * network stack will not process the empty packet, but free_pkt() will be
124 * free_pkt: Give the driver an opportunity to manage its packet buffer memory
125 * when the network stack is finished processing it. This will only be
126 * called when no error was returned from recv - optional
127 * stop: Stop the hardware from looking for packets - may be called even if
129 * mcast: Join or leave a multicast group (for TFTP) - optional
130 * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux
131 * on some platforms like ARM). This function expects the
132 * eth_pdata::enetaddr field to be populated. The method can
133 * return -ENOSYS to indicate that this is not implemented for
134 this hardware - optional.
135 * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a
136 * ROM on the board. This is how the driver should expose it
137 * to the network stack. This function should fill in the
138 * eth_pdata::enetaddr field - optional
141 int (*start
)(struct udevice
*dev
);
142 int (*send
)(struct udevice
*dev
, void *packet
, int length
);
143 int (*recv
)(struct udevice
*dev
, int flags
, uchar
**packetp
);
144 int (*free_pkt
)(struct udevice
*dev
, uchar
*packet
, int length
);
145 void (*stop
)(struct udevice
*dev
);
146 #ifdef CONFIG_MCAST_TFTP
147 int (*mcast
)(struct udevice
*dev
, const u8
*enetaddr
, int join
);
149 int (*write_hwaddr
)(struct udevice
*dev
);
150 int (*read_rom_hwaddr
)(struct udevice
*dev
);
153 #define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
155 struct udevice
*eth_get_dev(void); /* get the current device */
157 * The devname can be either an exact name given by the driver or device tree
158 * or it can be an alias of the form "eth%d"
160 struct udevice
*eth_get_dev_by_name(const char *devname
);
161 unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
163 /* Used only when NetConsole is enabled */
164 int eth_is_active(struct udevice
*dev
); /* Test device for active state */
165 int eth_init_state_only(void); /* Set active state */
166 void eth_halt_state_only(void); /* Set passive state */
169 #ifndef CONFIG_DM_ETH
171 #define ETH_NAME_LEN 16
172 char name
[ETH_NAME_LEN
];
173 unsigned char enetaddr
[ARP_HLEN
];
177 int (*init
)(struct eth_device
*, bd_t
*);
178 int (*send
)(struct eth_device
*, void *packet
, int length
);
179 int (*recv
)(struct eth_device
*);
180 void (*halt
)(struct eth_device
*);
181 #ifdef CONFIG_MCAST_TFTP
182 int (*mcast
)(struct eth_device
*, const u8
*enetaddr
, u8 set
);
184 int (*write_hwaddr
)(struct eth_device
*);
185 struct eth_device
*next
;
190 int eth_register(struct eth_device
*dev
);/* Register network device */
191 int eth_unregister(struct eth_device
*dev
);/* Remove network device */
193 extern struct eth_device
*eth_current
;
195 static __always_inline
struct eth_device
*eth_get_dev(void)
199 struct eth_device
*eth_get_dev_by_name(const char *devname
);
200 struct eth_device
*eth_get_dev_by_index(int index
); /* get dev @ index */
202 /* get the current device MAC */
203 static inline unsigned char *eth_get_ethaddr(void)
206 return eth_current
->enetaddr
;
210 /* Used only when NetConsole is enabled */
211 int eth_is_active(struct eth_device
*dev
); /* Test device for active state */
212 /* Set active state */
213 static __always_inline
int eth_init_state_only(void)
215 eth_get_dev()->state
= ETH_STATE_ACTIVE
;
219 /* Set passive state */
220 static __always_inline
void eth_halt_state_only(void)
222 eth_get_dev()->state
= ETH_STATE_PASSIVE
;
226 * Set the hardware address for an ethernet interface based on 'eth%daddr'
227 * environment variable (or just 'ethaddr' if eth_number is 0).
229 * base_name - base name for device (normally "eth")
230 * eth_number - value of %d (0 for first device of this type)
232 * 0 is success, non-zero is error status from driver.
234 int eth_write_hwaddr(struct eth_device
*dev
, const char *base_name
,
237 int usb_eth_initialize(bd_t
*bi
);
240 int eth_initialize(void); /* Initialize network subsystem */
241 void eth_try_another(int first_restart
); /* Change the device */
242 void eth_set_current(void); /* set nterface to ethcur var */
244 int eth_get_dev_index(void); /* get the device index */
245 void eth_parse_enetaddr(const char *addr
, uchar
*enetaddr
);
246 int eth_getenv_enetaddr(const char *name
, uchar
*enetaddr
);
247 int eth_setenv_enetaddr(const char *name
, const uchar
*enetaddr
);
250 * eth_setenv_enetaddr_by_index() - set the MAC address environment variable
252 * This sets up an environment variable with the given MAC address (@enetaddr).
253 * The environment variable to be set is defined by <@base_name><@index>addr.
254 * If @index is 0 it is omitted. For common Ethernet this means ethaddr,
257 * @base_name: Base name for variable, typically "eth"
258 * @index: Index of interface being updated (>=0)
259 * @enetaddr: Pointer to MAC address to put into the variable
260 * @return 0 if OK, other value on error
262 int eth_setenv_enetaddr_by_index(const char *base_name
, int index
,
267 * Initialize USB ethernet device with CONFIG_DM_ETH
269 * 0 is success, non-zero is error status.
271 int usb_ether_init(void);
274 * Get the hardware address for an ethernet interface .
276 * base_name - base name for device (normally "eth")
277 * index - device index number (0 for first)
278 * enetaddr - returns 6 byte hardware address
280 * Return true if the address is valid.
282 int eth_getenv_enetaddr_by_index(const char *base_name
, int index
,
285 int eth_init(void); /* Initialize the device */
286 int eth_send(void *packet
, int length
); /* Send a packet */
288 #if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
289 int eth_receive(void *packet
, int length
); /* Receive a packet*/
290 extern void (*push_packet
)(void *packet
, int length
);
292 int eth_rx(void); /* Check for received packets */
293 void eth_halt(void); /* stop SCC */
294 const char *eth_get_name(void); /* get name of current device */
296 #ifdef CONFIG_MCAST_TFTP
297 int eth_mcast_join(struct in_addr mcast_addr
, int join
);
298 u32
ether_crc(size_t len
, unsigned char const *p
);
302 /**********************************************************************/
311 struct ethernet_hdr
{
312 u8 et_dest
[ARP_HLEN
]; /* Destination node */
313 u8 et_src
[ARP_HLEN
]; /* Source node */
314 u16 et_protlen
; /* Protocol or length */
317 /* Ethernet header size */
318 #define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr))
320 #define ETH_FCS_LEN 4 /* Octets in the FCS */
323 u8 et_dest
[ARP_HLEN
]; /* Destination node */
324 u8 et_src
[ARP_HLEN
]; /* Source node */
325 u16 et_protlen
; /* Protocol or length */
326 u8 et_dsap
; /* 802 DSAP */
327 u8 et_ssap
; /* 802 SSAP */
328 u8 et_ctl
; /* 802 control */
329 u8 et_snap1
; /* SNAP */
332 u16 et_prot
; /* 802 protocol */
335 /* 802 + SNAP + ethernet header size */
336 #define E802_HDR_SIZE (sizeof(struct e802_hdr))
339 * Virtual LAN Ethernet header
341 struct vlan_ethernet_hdr
{
342 u8 vet_dest
[ARP_HLEN
]; /* Destination node */
343 u8 vet_src
[ARP_HLEN
]; /* Source node */
344 u16 vet_vlan_type
; /* PROT_VLAN */
345 u16 vet_tag
; /* TAG of VLAN */
346 u16 vet_type
; /* protocol type */
349 /* VLAN Ethernet header size */
350 #define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr))
352 #define PROT_IP 0x0800 /* IP protocol */
353 #define PROT_ARP 0x0806 /* IP ARP protocol */
354 #define PROT_RARP 0x8035 /* IP ARP protocol */
355 #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
356 #define PROT_IPV6 0x86dd /* IPv6 over bluebook */
357 #define PROT_PPP_SES 0x8864 /* PPPoE session messages */
359 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
360 #define IPPROTO_UDP 17 /* User Datagram Protocol */
363 * Internet Protocol (IP) header.
366 u8 ip_hl_v
; /* header length and version */
367 u8 ip_tos
; /* type of service */
368 u16 ip_len
; /* total length */
369 u16 ip_id
; /* identification */
370 u16 ip_off
; /* fragment offset field */
371 u8 ip_ttl
; /* time to live */
372 u8 ip_p
; /* protocol */
373 u16 ip_sum
; /* checksum */
374 struct in_addr ip_src
; /* Source IP address */
375 struct in_addr ip_dst
; /* Destination IP address */
378 #define IP_OFFS 0x1fff /* ip offset *= 8 */
379 #define IP_FLAGS 0xe000 /* first 3 bits */
380 #define IP_FLAGS_RES 0x8000 /* reserved */
381 #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */
382 #define IP_FLAGS_MFRAG 0x2000 /* more fragments */
384 #define IP_HDR_SIZE (sizeof(struct ip_hdr))
387 * Internet Protocol (IP) + UDP header.
390 u8 ip_hl_v
; /* header length and version */
391 u8 ip_tos
; /* type of service */
392 u16 ip_len
; /* total length */
393 u16 ip_id
; /* identification */
394 u16 ip_off
; /* fragment offset field */
395 u8 ip_ttl
; /* time to live */
396 u8 ip_p
; /* protocol */
397 u16 ip_sum
; /* checksum */
398 struct in_addr ip_src
; /* Source IP address */
399 struct in_addr ip_dst
; /* Destination IP address */
400 u16 udp_src
; /* UDP source port */
401 u16 udp_dst
; /* UDP destination port */
402 u16 udp_len
; /* Length of UDP packet */
403 u16 udp_xsum
; /* Checksum */
406 #define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr))
407 #define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE)
410 * Address Resolution Protocol (ARP) header.
413 u16 ar_hrd
; /* Format of hardware address */
414 # define ARP_ETHER 1 /* Ethernet hardware address */
415 u16 ar_pro
; /* Format of protocol address */
416 u8 ar_hln
; /* Length of hardware address */
417 u8 ar_pln
; /* Length of protocol address */
419 u16 ar_op
; /* Operation */
420 # define ARPOP_REQUEST 1 /* Request to resolve address */
421 # define ARPOP_REPLY 2 /* Response to previous request */
423 # define RARPOP_REQUEST 3 /* Request to resolve address */
424 # define RARPOP_REPLY 4 /* Response to previous request */
427 * The remaining fields are variable in size, according to
428 * the sizes above, and are defined as appropriate for
429 * specific hardware/protocol combinations.
432 #define ar_sha ar_data[0]
433 #define ar_spa ar_data[ARP_HLEN]
434 #define ar_tha ar_data[ARP_HLEN + ARP_PLEN]
435 #define ar_tpa ar_data[ARP_HLEN + ARP_PLEN + ARP_HLEN]
437 u8 ar_sha
[]; /* Sender hardware address */
438 u8 ar_spa
[]; /* Sender protocol address */
439 u8 ar_tha
[]; /* Target hardware address */
440 u8 ar_tpa
[]; /* Target protocol address */
444 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
447 * ICMP stuff (just enough to handle (host) redirect messages)
449 #define ICMP_ECHO_REPLY 0 /* Echo reply */
450 #define ICMP_NOT_REACH 3 /* Detination unreachable */
451 #define ICMP_REDIRECT 5 /* Redirect (change route) */
452 #define ICMP_ECHO_REQUEST 8 /* Echo request */
454 /* Codes for REDIRECT. */
455 #define ICMP_REDIR_NET 0 /* Redirect Net */
456 #define ICMP_REDIR_HOST 1 /* Redirect Host */
458 /* Codes for NOT_REACH */
459 #define ICMP_NOT_REACH_PORT 3 /* Port unreachable */
479 #define ICMP_HDR_SIZE (sizeof(struct icmp_hdr))
480 #define IP_ICMP_HDR_SIZE (IP_HDR_SIZE + ICMP_HDR_SIZE)
483 * Maximum packet size; used to allocate packet storage. Use
484 * the maxium Ethernet frame size as specified by the Ethernet
485 * standard including the 802.1Q tag (VLAN tagging).
486 * maximum packet size = 1522
487 * maximum packet size and multiple of 32 bytes = 1536
490 #define PKTSIZE_ALIGN 1536
493 * Maximum receive ring size; that is, the number of packets
494 * we can buffer before overflow happens. Basically, this just
495 * needs to be enough to prevent a packet being discarded while
496 * we are processing the previous one.
499 #define RINGSZ_LOG2 2
501 /**********************************************************************/
507 * All variables of type struct in_addr are stored in NETWORK byte order
512 /** BOOTP EXTENTIONS **/
513 extern struct in_addr net_gateway
; /* Our gateway IP address */
514 extern struct in_addr net_netmask
; /* Our subnet mask (0 = unknown) */
515 /* Our Domain Name Server (0 = unknown) */
516 extern struct in_addr net_dns_server
;
517 #if defined(CONFIG_BOOTP_DNS2)
518 /* Our 2nd Domain Name Server (0 = unknown) */
519 extern struct in_addr net_dns_server2
;
521 extern char net_nis_domain
[32]; /* Our IS domain */
522 extern char net_hostname
[32]; /* Our hostname */
523 extern char net_root_path
[64]; /* Our root path */
524 /** END OF BOOTP EXTENTIONS **/
525 extern u8 net_ethaddr
[ARP_HLEN
]; /* Our ethernet address */
526 extern u8 net_server_ethaddr
[ARP_HLEN
]; /* Boot server enet address */
527 extern struct in_addr net_ip
; /* Our IP addr (0 = unknown) */
528 extern struct in_addr net_server_ip
; /* Server IP addr (0 = unknown) */
529 extern uchar
*net_tx_packet
; /* THE transmit packet */
530 extern uchar
*net_rx_packets
[PKTBUFSRX
]; /* Receive packets */
531 extern uchar
*net_rx_packet
; /* Current receive packet */
532 extern int net_rx_packet_len
; /* Current rx packet length */
533 extern const u8 net_bcast_ethaddr
[ARP_HLEN
]; /* Ethernet broadcast address */
534 extern const u8 net_null_ethaddr
[ARP_HLEN
];
536 #define VLAN_NONE 4095 /* untagged */
537 #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
538 extern ushort net_our_vlan
; /* Our VLAN */
539 extern ushort net_native_vlan
; /* Our Native VLAN */
541 extern int net_restart_wrap
; /* Tried all network devices */
544 BOOTP
, RARP
, ARP
, TFTPGET
, DHCP
, PING
, DNS
, NFS
, CDP
, NETCONS
, SNTP
,
545 TFTPSRV
, TFTPPUT
, LINKLOCAL
548 extern char net_boot_file_name
[1024];/* Boot File name */
549 /* The actual transferred size of the bootfile (in bytes) */
550 extern u32 net_boot_file_size
;
551 /* Boot file size in blocks as reported by the DHCP server */
552 extern u32 net_boot_file_expected_size_in_blocks
;
554 #if defined(CONFIG_CMD_DNS)
555 extern char *net_dns_resolve
; /* The host to resolve */
556 extern char *net_dns_env_var
; /* the env var to put the ip into */
559 #if defined(CONFIG_CMD_PING)
560 extern struct in_addr net_ping_ip
; /* the ip address to ping */
563 #if defined(CONFIG_CMD_CDP)
564 /* when CDP completes these hold the return values */
565 extern ushort cdp_native_vlan
; /* CDP returned native VLAN */
566 extern ushort cdp_appliance_vlan
; /* CDP returned appliance VLAN */
569 * Check for a CDP packet by examining the received MAC address field
571 static inline int is_cdp_packet(const uchar
*ethaddr
)
573 extern const u8 net_cdp_ethaddr
[ARP_HLEN
];
575 return memcmp(ethaddr
, net_cdp_ethaddr
, ARP_HLEN
) == 0;
579 #if defined(CONFIG_CMD_SNTP)
580 extern struct in_addr net_ntp_server
; /* the ip address to NTP */
581 extern int net_ntp_time_offset
; /* offset time from UTC */
584 #if defined(CONFIG_MCAST_TFTP)
585 extern struct in_addr net_mcast_addr
;
588 /* Initialize the network adapter */
590 int net_loop(enum proto_t
);
592 /* Load failed. Start again. */
593 int net_start_again(void);
595 /* Get size of the ethernet header when we send */
596 int net_eth_hdr_size(void);
598 /* Set ethernet header; returns the size of the header */
599 int net_set_ether(uchar
*xet
, const uchar
*dest_ethaddr
, uint prot
);
600 int net_update_ether(struct ethernet_hdr
*et
, uchar
*addr
, uint prot
);
603 void net_set_ip_header(uchar
*pkt
, struct in_addr dest
, struct in_addr source
);
604 void net_set_udp_header(uchar
*pkt
, struct in_addr dest
, int dport
,
608 * compute_ip_checksum() - Compute IP checksum
610 * @addr: Address to check (must be 16-bit aligned)
611 * @nbytes: Number of bytes to check (normally a multiple of 2)
612 * @return 16-bit IP checksum
614 unsigned compute_ip_checksum(const void *addr
, unsigned nbytes
);
617 * add_ip_checksums() - add two IP checksums
619 * @offset: Offset of first sum (if odd we do a byte-swap)
620 * @sum: First checksum
621 * @new_sum: New checksum to add
622 * @return updated 16-bit IP checksum
624 unsigned add_ip_checksums(unsigned offset
, unsigned sum
, unsigned new_sum
);
627 * ip_checksum_ok() - check if a checksum is correct
629 * This works by making sure the checksum sums to 0
631 * @addr: Address to check (must be 16-bit aligned)
632 * @nbytes: Number of bytes to check (normally a multiple of 2)
633 * @return true if the checksum matches, false if not
635 int ip_checksum_ok(const void *addr
, unsigned nbytes
);
638 rxhand_f
*net_get_udp_handler(void); /* Get UDP RX packet handler */
639 void net_set_udp_handler(rxhand_f
*); /* Set UDP RX packet handler */
640 rxhand_f
*net_get_arp_handler(void); /* Get ARP RX packet handler */
641 void net_set_arp_handler(rxhand_f
*); /* Set ARP RX packet handler */
642 void net_set_icmp_handler(rxhand_icmp_f
*f
); /* Set ICMP RX handler */
643 void net_set_timeout_handler(ulong
, thand_f
*);/* Set timeout handler */
645 /* Network loop state */
646 enum net_loop_state
{
652 extern enum net_loop_state net_state
;
654 static inline void net_set_state(enum net_loop_state state
)
656 debug_cond(DEBUG_INT_STATE
, "--- NetState set to %d\n", state
);
660 /* Transmit a packet */
661 static inline void net_send_packet(uchar
*pkt
, int len
)
663 /* Currently no way to return errors from eth_send() */
664 (void) eth_send(pkt
, len
);
668 * Transmit "net_tx_packet" as UDP packet, performing ARP request if needed
669 * (ether will be populated)
671 * @param ether Raw packet buffer
672 * @param dest IP address to send the datagram to
673 * @param dport Destination UDP port
674 * @param sport Source UDP port
675 * @param payload_len Length of data after the UDP header
677 int net_send_udp_packet(uchar
*ether
, struct in_addr dest
, int dport
,
678 int sport
, int payload_len
);
680 /* Processes a received packet */
681 void net_process_received_packet(uchar
*in_packet
, int len
);
683 #ifdef CONFIG_NETCONSOLE
685 int nc_input_packet(uchar
*pkt
, struct in_addr src_ip
, unsigned dest_port
,
686 unsigned src_port
, unsigned len
);
689 static __always_inline
int eth_is_on_demand_init(void)
691 #ifdef CONFIG_NETCONSOLE
692 extern enum proto_t net_loop_last_protocol
;
694 return net_loop_last_protocol
!= NETCONS
;
700 static inline void eth_set_last_protocol(int protocol
)
702 #ifdef CONFIG_NETCONSOLE
703 extern enum proto_t net_loop_last_protocol
;
705 net_loop_last_protocol
= protocol
;
710 * Check if autoload is enabled. If so, use either NFS or TFTP to download
713 void net_auto_load(void);
716 * The following functions are a bit ugly, but necessary to deal with
717 * alignment restrictions on ARM.
719 * We're using inline functions, which had the smallest memory
720 * footprint in our tests.
722 /* return IP *in network byteorder* */
723 static inline struct in_addr
net_read_ip(void *from
)
727 memcpy((void *)&ip
, (void *)from
, sizeof(ip
));
731 /* return ulong *in network byteorder* */
732 static inline u32
net_read_u32(u32
*from
)
736 memcpy((void *)&l
, (void *)from
, sizeof(l
));
740 /* write IP *in network byteorder* */
741 static inline void net_write_ip(void *to
, struct in_addr ip
)
743 memcpy(to
, (void *)&ip
, sizeof(ip
));
747 static inline void net_copy_ip(void *to
, void *from
)
749 memcpy((void *)to
, from
, sizeof(struct in_addr
));
753 static inline void net_copy_u32(u32
*to
, u32
*from
)
755 memcpy((void *)to
, (void *)from
, sizeof(u32
));
759 * is_zero_ethaddr - Determine if give Ethernet address is all zeros.
760 * @addr: Pointer to a six-byte array containing the Ethernet address
762 * Return true if the address is all zeroes.
764 static inline int is_zero_ethaddr(const u8
*addr
)
766 return !(addr
[0] | addr
[1] | addr
[2] | addr
[3] | addr
[4] | addr
[5]);
770 * is_multicast_ethaddr - Determine if the Ethernet address is a multicast.
771 * @addr: Pointer to a six-byte array containing the Ethernet address
773 * Return true if the address is a multicast address.
774 * By definition the broadcast address is also a multicast address.
776 static inline int is_multicast_ethaddr(const u8
*addr
)
778 return 0x01 & addr
[0];
782 * is_broadcast_ethaddr - Determine if the Ethernet address is broadcast
783 * @addr: Pointer to a six-byte array containing the Ethernet address
785 * Return true if the address is the broadcast address.
787 static inline int is_broadcast_ethaddr(const u8
*addr
)
789 return (addr
[0] & addr
[1] & addr
[2] & addr
[3] & addr
[4] & addr
[5]) ==
794 * is_valid_ethaddr - Determine if the given Ethernet address is valid
795 * @addr: Pointer to a six-byte array containing the Ethernet address
797 * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
798 * a multicast address, and is not FF:FF:FF:FF:FF:FF.
800 * Return true if the address is valid.
802 static inline int is_valid_ethaddr(const u8
*addr
)
804 /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
805 * explicitly check for it here. */
806 return !is_multicast_ethaddr(addr
) && !is_zero_ethaddr(addr
);
810 * net_random_ethaddr - Generate software assigned random Ethernet address
811 * @addr: Pointer to a six-byte array containing the Ethernet address
813 * Generate a random Ethernet address (MAC) that is not multicast
814 * and has the local assigned bit set.
816 static inline void net_random_ethaddr(uchar
*addr
)
819 unsigned int seed
= get_timer(0);
821 for (i
= 0; i
< 6; i
++)
822 addr
[i
] = rand_r(&seed
);
824 addr
[0] &= 0xfe; /* clear multicast bit */
825 addr
[0] |= 0x02; /* set local assignment bit (IEEE802) */
828 /* Convert an IP address to a string */
829 void ip_to_string(struct in_addr x
, char *s
);
831 /* Convert a string to ip address */
832 struct in_addr
string_to_ip(const char *s
);
834 /* Convert a VLAN id to a string */
835 void vlan_to_string(ushort x
, char *s
);
837 /* Convert a string to a vlan id */
838 ushort
string_to_vlan(const char *s
);
840 /* read a VLAN id from an environment variable */
841 ushort
getenv_vlan(char *);
843 /* copy a filename (allow for "..." notation, limit length) */
844 void copy_filename(char *dst
, const char *src
, int size
);
846 /* get a random source port */
847 unsigned int random_port(void);
850 * update_tftp - Update firmware over TFTP (via DFU)
852 * This function updates board's firmware via TFTP
854 * @param addr - memory address where data is stored
855 * @param interface - the DFU medium name - e.g. "mmc"
856 * @param devstring - the DFU medium number - e.g. "1"
858 * @return - 0 on success, other value on failure
860 int update_tftp(ulong addr
, char *interface
, char *devstring
);
862 /**********************************************************************/
864 #endif /* __NET_H__ */