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wdenk2d966952002-10-31 22:12:35 +00001/*
2 * LiMon Monitor (LiMon) - Network.
3 *
4 * Copyright 1994 - 2000 Neil Russell.
5 * (See License)
6 *
7 *
8 * History
9 * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
10 */
11
12#ifndef __NET_H__
13#define __NET_H__
14
wdenk71f95112003-06-15 22:40:42 +000015#if defined(CONFIG_8xx)
wdenk2d966952002-10-31 22:12:35 +000016#include <commproc.h>
wdenk71f95112003-06-15 22:40:42 +000017# if !defined(CONFIG_NET_MULTI)
18# if defined(FEC_ENET) || defined(SCC_ENET)
19# define CONFIG_NET_MULTI
20# endif
21# endif
22#endif /* CONFIG_8xx */
wdenkaacf9a42003-01-17 16:27:01 +000023
wdenkcbd8a352004-02-24 02:00:03 +000024#if defined(CONFIG_MPC5xxx)
wdenk77846742003-07-26 08:08:08 +000025# if !defined(CONFIG_NET_MULTI)
wdenkcbd8a352004-02-24 02:00:03 +000026# if defined(CONFIG_MPC5xxx_FEC)
wdenk77846742003-07-26 08:08:08 +000027# define CONFIG_NET_MULTI
28# endif
29# endif
wdenkcbd8a352004-02-24 02:00:03 +000030#endif /* CONFIG_MPC5xxx */
wdenk77846742003-07-26 08:08:08 +000031
Jon Loeliger9c4c5ae2005-07-23 10:37:35 -050032#if !defined(CONFIG_NET_MULTI) && defined(CONFIG_CPM2)
wdenkaacf9a42003-01-17 16:27:01 +000033#include <config.h>
34#if defined(CONFIG_ETHER_ON_FCC)
35#if defined(CONFIG_ETHER_ON_SCC)
36#error "Ethernet not correctly defined"
37#endif /* CONFIG_ETHER_ON_SCC */
38#define CONFIG_NET_MULTI
39#if (CONFIG_ETHER_INDEX == 1)
40#define CONFIG_ETHER_ON_FCC1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020041# define CONFIG_SYS_CMXFCR_MASK1 CONFIG_SYS_CMXFCR_MASK
42# define CONFIG_SYS_CMXFCR_VALUE1 CONFIG_SYS_CMXFCR_VALUE
wdenkaacf9a42003-01-17 16:27:01 +000043#elif (CONFIG_ETHER_INDEX == 2)
44#define CONFIG_ETHER_ON_FCC2
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020045# define CONFIG_SYS_CMXFCR_MASK2 CONFIG_SYS_CMXFCR_MASK
46# define CONFIG_SYS_CMXFCR_VALUE2 CONFIG_SYS_CMXFCR_VALUE
wdenkaacf9a42003-01-17 16:27:01 +000047#elif (CONFIG_ETHER_INDEX == 3)
48#define CONFIG_ETHER_ON_FCC3
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020049# define CONFIG_SYS_CMXFCR_MASK3 CONFIG_SYS_CMXFCR_MASK
50# define CONFIG_SYS_CMXFCR_VALUE3 CONFIG_SYS_CMXFCR_VALUE
wdenkaacf9a42003-01-17 16:27:01 +000051#endif /* CONFIG_ETHER_INDEX */
52#endif /* CONFIG_ETHER_ON_FCC */
53#endif /* !CONFIG_NET_MULTI && CONFIG_8260 */
54
wdenk2d966952002-10-31 22:12:35 +000055#include <asm/byteorder.h> /* for nton* / ntoh* stuff */
56
57
58/*
59 * The number of receive packet buffers, and the required packet buffer
60 * alignment in memory.
61 *
62 */
63
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020064#ifdef CONFIG_SYS_RX_ETH_BUFFER
65# define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
wdenk1d0350e2002-11-11 21:14:20 +000066#else
stroesec6028832003-06-05 15:38:29 +000067# define PKTBUFSRX 4
wdenk1d0350e2002-11-11 21:14:20 +000068#endif
69
wdenk2d966952002-10-31 22:12:35 +000070#define PKTALIGN 32
71
72typedef ulong IPaddr_t;
73
74
Luca Ceresoli03eb1292011-04-18 06:19:50 +000075/**
76 * An incoming packet handler.
77 * @param pkt pointer to the application packet
78 * @param dport destination UDP port
79 * @param sip source IP address
80 * @param sport source UDP port
81 * @param len packet length
wdenk2d966952002-10-31 22:12:35 +000082 */
Luca Ceresoli03eb1292011-04-18 06:19:50 +000083typedef void rxhand_f(uchar *pkt, unsigned dport,
84 IPaddr_t sip, unsigned sport,
85 unsigned len);
wdenk2d966952002-10-31 22:12:35 +000086
87/*
88 * A timeout handler. Called after time interval has expired.
89 */
90typedef void thand_f(void);
91
wdenk2d966952002-10-31 22:12:35 +000092#define NAMESIZE 16
93
94enum eth_state_t {
95 ETH_STATE_INIT,
96 ETH_STATE_PASSIVE,
97 ETH_STATE_ACTIVE
98};
99
100struct eth_device {
101 char name[NAMESIZE];
102 unsigned char enetaddr[6];
103 int iobase;
104 int state;
105
106 int (*init) (struct eth_device*, bd_t*);
David Updegraff53a5c422007-06-11 10:41:07 -0500107 int (*send) (struct eth_device*, volatile void* packet, int length);
wdenk2d966952002-10-31 22:12:35 +0000108 int (*recv) (struct eth_device*);
109 void (*halt) (struct eth_device*);
David Updegraff53a5c422007-06-11 10:41:07 -0500110#ifdef CONFIG_MCAST_TFTP
111 int (*mcast) (struct eth_device*, u32 ip, u8 set);
112#endif
Ben Warrenecee9322010-04-26 11:11:46 -0700113 int (*write_hwaddr) (struct eth_device*);
wdenk2d966952002-10-31 22:12:35 +0000114 struct eth_device *next;
115 void *priv;
116};
117
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600118extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
119extern int eth_register(struct eth_device* dev);/* Register network device */
120extern void eth_try_another(int first_restart); /* Change the device */
wdenka3d991b2004-04-15 21:48:45 +0000121#ifdef CONFIG_NET_MULTI
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600122extern void eth_set_current(void); /* set nterface to ethcur var */
wdenka3d991b2004-04-15 21:48:45 +0000123#endif
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600124extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
Ben Warrend7fb9bc2010-07-29 12:56:11 -0700125extern struct eth_device *eth_get_dev_by_name(const char *devname);
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600126extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
127extern int eth_get_dev_index (void); /* get the device index */
Mike Frysinger3f6e6992009-01-29 19:43:44 -0500128extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
129extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
130extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
Mike Frysinger86848a72009-07-15 21:31:28 -0400131extern int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr);
wdenk2d966952002-10-31 22:12:35 +0000132
Remy Bohmer23cd1382009-07-29 18:18:43 +0200133extern int usb_eth_initialize(bd_t *bi);
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600134extern int eth_init(bd_t *bis); /* Initialize the device */
135extern int eth_send(volatile void *packet, int length); /* Send a packet */
Remy Bohmer23cd1382009-07-29 18:18:43 +0200136
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100137#ifdef CONFIG_API
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600138extern int eth_receive(volatile void *packet, int length); /* Receive a packet*/
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100139#endif
Andy Fleming5dc0cf62009-02-11 15:10:31 -0600140extern int eth_rx(void); /* Check for received packets */
141extern void eth_halt(void); /* stop SCC */
142extern char *eth_get_name(void); /* get name of current device */
wdenk2d966952002-10-31 22:12:35 +0000143
David Updegraff53a5c422007-06-11 10:41:07 -0500144#ifdef CONFIG_MCAST_TFTP
145int eth_mcast_join( IPaddr_t mcast_addr, u8 join);
146u32 ether_crc (size_t len, unsigned char const *p);
147#endif
148
wdenk2d966952002-10-31 22:12:35 +0000149
150/**********************************************************************/
151/*
152 * Protocol headers.
153 */
154
155/*
156 * Ethernet header
157 */
158typedef struct {
159 uchar et_dest[6]; /* Destination node */
160 uchar et_src[6]; /* Source node */
161 ushort et_protlen; /* Protocol or length */
162 uchar et_dsap; /* 802 DSAP */
163 uchar et_ssap; /* 802 SSAP */
164 uchar et_ctl; /* 802 control */
165 uchar et_snap1; /* SNAP */
166 uchar et_snap2;
167 uchar et_snap3;
168 ushort et_prot; /* 802 protocol */
169} Ethernet_t;
170
171#define ETHER_HDR_SIZE 14 /* Ethernet header size */
172#define E802_HDR_SIZE 22 /* 802 ethernet header size */
wdenka3d991b2004-04-15 21:48:45 +0000173
174/*
175 * Ethernet header
176 */
177typedef struct {
178 uchar vet_dest[6]; /* Destination node */
179 uchar vet_src[6]; /* Source node */
180 ushort vet_vlan_type; /* PROT_VLAN */
181 ushort vet_tag; /* TAG of VLAN */
182 ushort vet_type; /* protocol type */
183} VLAN_Ethernet_t;
184
185#define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
186
wdenk2d966952002-10-31 22:12:35 +0000187#define PROT_IP 0x0800 /* IP protocol */
188#define PROT_ARP 0x0806 /* IP ARP protocol */
189#define PROT_RARP 0x8035 /* IP ARP protocol */
wdenka3d991b2004-04-15 21:48:45 +0000190#define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
wdenk2d966952002-10-31 22:12:35 +0000191
192#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
193#define IPPROTO_UDP 17 /* User Datagram Protocol */
194
195/*
196 * Internet Protocol (IP) header.
197 */
198typedef struct {
199 uchar ip_hl_v; /* header length and version */
200 uchar ip_tos; /* type of service */
201 ushort ip_len; /* total length */
202 ushort ip_id; /* identification */
203 ushort ip_off; /* fragment offset field */
204 uchar ip_ttl; /* time to live */
205 uchar ip_p; /* protocol */
206 ushort ip_sum; /* checksum */
207 IPaddr_t ip_src; /* Source IP address */
208 IPaddr_t ip_dst; /* Destination IP address */
209 ushort udp_src; /* UDP source port */
210 ushort udp_dst; /* UDP destination port */
211 ushort udp_len; /* Length of UDP packet */
212 ushort udp_xsum; /* Checksum */
213} IP_t;
214
Peter Tysere0c07b82008-12-01 16:26:20 -0600215#define IP_OFFS 0x1fff /* ip offset *= 8 */
216#define IP_FLAGS 0xe000 /* first 3 bits */
217#define IP_FLAGS_RES 0x8000 /* reserved */
218#define IP_FLAGS_DFRAG 0x4000 /* don't fragments */
219#define IP_FLAGS_MFRAG 0x2000 /* more fragments */
220
wdenk2d966952002-10-31 22:12:35 +0000221#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
222#define IP_HDR_SIZE (sizeof (IP_t))
223
224
225/*
226 * Address Resolution Protocol (ARP) header.
227 */
228typedef struct
229{
230 ushort ar_hrd; /* Format of hardware address */
231# define ARP_ETHER 1 /* Ethernet hardware address */
232 ushort ar_pro; /* Format of protocol address */
233 uchar ar_hln; /* Length of hardware address */
234 uchar ar_pln; /* Length of protocol address */
235 ushort ar_op; /* Operation */
236# define ARPOP_REQUEST 1 /* Request to resolve address */
237# define ARPOP_REPLY 2 /* Response to previous request */
238
239# define RARPOP_REQUEST 3 /* Request to resolve address */
240# define RARPOP_REPLY 4 /* Response to previous request */
241
242 /*
wdenk8bde7f72003-06-27 21:31:46 +0000243 * The remaining fields are variable in size, according to
244 * the sizes above, and are defined as appropriate for
245 * specific hardware/protocol combinations.
wdenk2d966952002-10-31 22:12:35 +0000246 */
247 uchar ar_data[0];
248#if 0
249 uchar ar_sha[]; /* Sender hardware address */
250 uchar ar_spa[]; /* Sender protocol address */
251 uchar ar_tha[]; /* Target hardware address */
252 uchar ar_tpa[]; /* Target protocol address */
253#endif /* 0 */
254} ARP_t;
255
256#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
257
258/*
259 * ICMP stuff (just enough to handle (host) redirect messages)
260 */
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200261#define ICMP_ECHO_REPLY 0 /* Echo reply */
wdenk2d966952002-10-31 22:12:35 +0000262#define ICMP_REDIRECT 5 /* Redirect (change route) */
wdenk73a8b272003-06-05 19:27:42 +0000263#define ICMP_ECHO_REQUEST 8 /* Echo request */
wdenk2d966952002-10-31 22:12:35 +0000264
265/* Codes for REDIRECT. */
266#define ICMP_REDIR_NET 0 /* Redirect Net */
267#define ICMP_REDIR_HOST 1 /* Redirect Host */
268
269typedef struct icmphdr {
270 uchar type;
271 uchar code;
272 ushort checksum;
273 union {
274 struct {
275 ushort id;
276 ushort sequence;
277 } echo;
278 ulong gateway;
279 struct {
280 ushort __unused;
281 ushort mtu;
282 } frag;
283 } un;
284} ICMP_t;
285
286
wdenk2d966952002-10-31 22:12:35 +0000287/*
288 * Maximum packet size; used to allocate packet storage.
289 * TFTP packets can be 524 bytes + IP header + ethernet header.
290 * Lets be conservative, and go for 38 * 16. (Must also be
291 * a multiple of 32 bytes).
292 */
293/*
294 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
295 * traffic type is not always controlled
296 * maximum packet size = 1518
297 * maximum packet size and multiple of 32 bytes = 1536
298 */
299#define PKTSIZE 1518
300#define PKTSIZE_ALIGN 1536
301/*#define PKTSIZE 608*/
302
303/*
304 * Maximum receive ring size; that is, the number of packets
305 * we can buffer before overflow happens. Basically, this just
306 * needs to be enough to prevent a packet being discarded while
307 * we are processing the previous one.
308 */
309#define RINGSZ 4
310#define RINGSZ_LOG2 2
311
312/**********************************************************************/
313/*
314 * Globals.
315 *
316 * Note:
317 *
318 * All variables of type IPaddr_t are stored in NETWORK byte order
319 * (big endian).
320 */
321
322/* net.c */
323/** BOOTP EXTENTIONS **/
324extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
325extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
326extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500327#if defined(CONFIG_BOOTP_DNS2)
stroesefe389a82003-08-28 14:17:32 +0000328extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
329#endif
wdenk2d966952002-10-31 22:12:35 +0000330extern char NetOurNISDomain[32]; /* Our NIS domain */
331extern char NetOurHostName[32]; /* Our hostname */
332extern char NetOurRootPath[64]; /* Our root path */
333extern ushort NetBootFileSize; /* Our boot file size in blocks */
334/** END OF BOOTP EXTENTIONS **/
335extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
336extern uchar NetOurEther[6]; /* Our ethernet address */
337extern uchar NetServerEther[6]; /* Boot server enet address */
338extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
339extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
340extern volatile uchar * NetTxPacket; /* THE transmit packet */
341extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
Mike Frysingerd9bec9f2009-07-18 21:04:08 -0400342extern volatile uchar * NetRxPacket; /* Current receive packet */
343extern int NetRxPacketLen; /* Current rx packet length */
wdenk2d966952002-10-31 22:12:35 +0000344extern unsigned NetIPID; /* IP ID (counting) */
345extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
wdenk68ceb292004-08-02 21:11:11 +0000346extern uchar NetEtherNullAddr[6];
wdenk2d966952002-10-31 22:12:35 +0000347
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200348#define VLAN_NONE 4095 /* untagged */
349#define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
350extern ushort NetOurVLAN; /* Our VLAN */
351extern ushort NetOurNativeVLAN; /* Our Native VLAN */
wdenka3d991b2004-04-15 21:48:45 +0000352
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200353extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
wdenka3d991b2004-04-15 21:48:45 +0000354extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
355extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
356
wdenk2d966952002-10-31 22:12:35 +0000357extern int NetState; /* Network loop state */
358#define NETLOOP_CONTINUE 1
359#define NETLOOP_RESTART 2
360#define NETLOOP_SUCCESS 3
361#define NETLOOP_FAIL 4
362
363#ifdef CONFIG_NET_MULTI
364extern int NetRestartWrap; /* Tried all network devices */
365#endif
366
wdenkea287de2005-04-01 00:25:43 +0000367typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP } proto_t;
wdenk2d966952002-10-31 22:12:35 +0000368
369/* from net/net.c */
370extern char BootFile[128]; /* Boot File name */
371
Robin Getz1a32bf42009-07-20 14:53:54 -0400372#if defined(CONFIG_CMD_DNS)
373extern char *NetDNSResolve; /* The host to resolve */
374extern char *NetDNSenvvar; /* the env var to put the ip into */
375#endif
376
Jon Loeliger639221c2007-07-09 17:15:49 -0500377#if defined(CONFIG_CMD_PING)
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200378extern IPaddr_t NetPingIP; /* the ip address to ping */
wdenk73a8b272003-06-05 19:27:42 +0000379#endif
380
Jon Loeliger639221c2007-07-09 17:15:49 -0500381#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000382/* when CDP completes these hold the return values */
383extern ushort CDPNativeVLAN;
384extern ushort CDPApplianceVLAN;
385#endif
386
Jon Loeliger639221c2007-07-09 17:15:49 -0500387#if defined(CONFIG_CMD_SNTP)
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200388extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
wdenkea287de2005-04-01 00:25:43 +0000389extern int NetTimeOffset; /* offset time from UTC */
390#endif
391
wdenk2d966952002-10-31 22:12:35 +0000392/* Initialize the network adapter */
393extern int NetLoop(proto_t);
394
395/* Shutdown adapters and cleanup */
396extern void NetStop(void);
397
398/* Load failed. Start again. */
399extern void NetStartAgain(void);
400
wdenka3d991b2004-04-15 21:48:45 +0000401/* Get size of the ethernet header when we send */
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200402extern int NetEthHdrSize(void);
wdenka3d991b2004-04-15 21:48:45 +0000403
404/* Set ethernet header; returns the size of the header */
405extern int NetSetEther(volatile uchar *, uchar *, uint);
wdenk2d966952002-10-31 22:12:35 +0000406
407/* Set IP header */
408extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
409
410/* Checksum */
411extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
412extern uint NetCksum(uchar *, int); /* Calculate the checksum */
413
414/* Set callbacks */
415extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
wdenk3e01d752004-10-09 21:56:21 +0000416extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
wdenk2d966952002-10-31 22:12:35 +0000417
418/* Transmit "NetTxPacket" */
419extern void NetSendPacket(volatile uchar *, int);
420
wdenk73a8b272003-06-05 19:27:42 +0000421/* Transmit UDP packet, performing ARP request if needed */
422extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
423
wdenk2d966952002-10-31 22:12:35 +0000424/* Processes a received packet */
425extern void NetReceive(volatile uchar *, int);
426
wdenk2d966952002-10-31 22:12:35 +0000427/*
428 * The following functions are a bit ugly, but necessary to deal with
429 * alignment restrictions on ARM.
430 *
431 * We're using inline functions, which had the smallest memory
432 * footprint in our tests.
433 */
434/* return IP *in network byteorder* */
Anatolij Gustschin33a4a702008-04-30 13:34:40 +0200435static inline IPaddr_t NetReadIP(volatile void *from)
wdenk2d966952002-10-31 22:12:35 +0000436{
437 IPaddr_t ip;
Anatolij Gustschin33a4a702008-04-30 13:34:40 +0200438 memcpy((void*)&ip, (void*)from, sizeof(ip));
wdenk2d966952002-10-31 22:12:35 +0000439 return ip;
440}
441
442/* return ulong *in network byteorder* */
443static inline ulong NetReadLong(ulong *from)
444{
445 ulong l;
446 memcpy((void*)&l, (void*)from, sizeof(l));
447 return l;
448}
449
450/* write IP *in network byteorder* */
451static inline void NetWriteIP(void *to, IPaddr_t ip)
452{
453 memcpy(to, (void*)&ip, sizeof(ip));
454}
455
456/* copy IP */
Anatolij Gustschin33a4a702008-04-30 13:34:40 +0200457static inline void NetCopyIP(volatile void *to, void *from)
wdenk2d966952002-10-31 22:12:35 +0000458{
Anatolij Gustschin33a4a702008-04-30 13:34:40 +0200459 memcpy((void*)to, from, sizeof(IPaddr_t));
wdenk2d966952002-10-31 22:12:35 +0000460}
461
462/* copy ulong */
463static inline void NetCopyLong(ulong *to, ulong *from)
464{
465 memcpy((void*)to, (void*)from, sizeof(ulong));
466}
467
Mike Rapoport50cca8b2007-08-12 08:48:27 +0300468/**
469 * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
470 * @addr: Pointer to a six-byte array containing the Ethernet address
471 *
472 * Return true if the address is all zeroes.
473 */
474static inline int is_zero_ether_addr(const u8 *addr)
475{
476 return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
477}
478
479/**
480 * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
481 * @addr: Pointer to a six-byte array containing the Ethernet address
482 *
483 * Return true if the address is a multicast address.
484 * By definition the broadcast address is also a multicast address.
485 */
486static inline int is_multicast_ether_addr(const u8 *addr)
487{
488 return (0x01 & addr[0]);
489}
490
Remy Bohmer23cd1382009-07-29 18:18:43 +0200491/*
492 * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
493 * @addr: Pointer to a six-byte array containing the Ethernet address
494 *
495 * Return true if the address is the broadcast address.
496 */
497static inline int is_broadcast_ether_addr(const u8 *addr)
498{
499 return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
500}
501
502/*
Mike Frysinger75edebe2009-01-27 16:53:39 -0500503 * is_valid_ether_addr - Determine if the given Ethernet address is valid
504 * @addr: Pointer to a six-byte array containing the Ethernet address
505 *
506 * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
507 * a multicast address, and is not FF:FF:FF:FF:FF:FF.
508 *
509 * Return true if the address is valid.
510 */
Remy Bohmer23cd1382009-07-29 18:18:43 +0200511static inline int is_valid_ether_addr(const u8 *addr)
Mike Frysinger75edebe2009-01-27 16:53:39 -0500512{
513 /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
514 * explicitly check for it here. */
515 return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
516}
517
wdenk2d966952002-10-31 22:12:35 +0000518/* Convert an IP address to a string */
519extern void ip_to_string (IPaddr_t x, char *s);
520
wdenk73a8b272003-06-05 19:27:42 +0000521/* Convert a string to ip address */
Mike Frysinger908c6b62010-10-20 07:16:58 -0400522extern IPaddr_t string_to_ip(const char *s);
wdenk73a8b272003-06-05 19:27:42 +0000523
wdenka3d991b2004-04-15 21:48:45 +0000524/* Convert a VLAN id to a string */
525extern void VLAN_to_string (ushort x, char *s);
526
527/* Convert a string to a vlan id */
Mike Frysinger2e3ef6e2010-10-20 07:16:48 -0400528extern ushort string_to_VLAN(const char *s);
wdenka3d991b2004-04-15 21:48:45 +0000529
wdenka3d991b2004-04-15 21:48:45 +0000530/* read a VLAN id from an environment variable */
531extern ushort getenv_VLAN(char *);
532
wdenk2d966952002-10-31 22:12:35 +0000533/* copy a filename (allow for "..." notation, limit length) */
Mike Frysingerb920ee92010-10-20 07:16:40 -0400534extern void copy_filename (char *dst, const char *src, int size);
wdenk2d966952002-10-31 22:12:35 +0000535
Mike Frysinger91b469c2009-09-02 04:18:55 -0400536/* get a random source port */
537extern unsigned int random_port(void);
538
wdenk2d966952002-10-31 22:12:35 +0000539/**********************************************************************/
540
541#endif /* __NET_H__ */