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Commit | Line | Data |
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2d966958 WD |
1 | /* |
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 | ||
71f95118 | 15 | #if defined(CONFIG_8xx) |
2d966958 | 16 | #include <commproc.h> |
71f95118 WD |
17 | # 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 */ | |
aacf9a49 | 23 | |
cbd8a35c | 24 | #if defined(CONFIG_MPC5xxx) |
77846748 | 25 | # if !defined(CONFIG_NET_MULTI) |
cbd8a35c | 26 | # if defined(CONFIG_MPC5xxx_FEC) |
77846748 WD |
27 | # define CONFIG_NET_MULTI |
28 | # endif | |
29 | # endif | |
cbd8a35c | 30 | #endif /* CONFIG_MPC5xxx */ |
77846748 | 31 | |
9c4c5ae3 | 32 | #if !defined(CONFIG_NET_MULTI) && defined(CONFIG_CPM2) |
aacf9a49 WD |
33 | #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 | |
6d0f6bcf JCPV |
41 | # define CONFIG_SYS_CMXFCR_MASK1 CONFIG_SYS_CMXFCR_MASK |
42 | # define CONFIG_SYS_CMXFCR_VALUE1 CONFIG_SYS_CMXFCR_VALUE | |
aacf9a49 WD |
43 | #elif (CONFIG_ETHER_INDEX == 2) |
44 | #define CONFIG_ETHER_ON_FCC2 | |
6d0f6bcf JCPV |
45 | # define CONFIG_SYS_CMXFCR_MASK2 CONFIG_SYS_CMXFCR_MASK |
46 | # define CONFIG_SYS_CMXFCR_VALUE2 CONFIG_SYS_CMXFCR_VALUE | |
aacf9a49 WD |
47 | #elif (CONFIG_ETHER_INDEX == 3) |
48 | #define CONFIG_ETHER_ON_FCC3 | |
6d0f6bcf JCPV |
49 | # define CONFIG_SYS_CMXFCR_MASK3 CONFIG_SYS_CMXFCR_MASK |
50 | # define CONFIG_SYS_CMXFCR_VALUE3 CONFIG_SYS_CMXFCR_VALUE | |
aacf9a49 WD |
51 | #endif /* CONFIG_ETHER_INDEX */ |
52 | #endif /* CONFIG_ETHER_ON_FCC */ | |
53 | #endif /* !CONFIG_NET_MULTI && CONFIG_8260 */ | |
54 | ||
2d966958 WD |
55 | #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 | ||
6d0f6bcf JCPV |
64 | #ifdef CONFIG_SYS_RX_ETH_BUFFER |
65 | # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER | |
1d0350ed | 66 | #else |
c6028835 | 67 | # define PKTBUFSRX 4 |
1d0350ed WD |
68 | #endif |
69 | ||
2d966958 WD |
70 | #define PKTALIGN 32 |
71 | ||
72 | typedef ulong IPaddr_t; | |
73 | ||
74 | ||
2d966958 WD |
75 | /* |
76 | * The current receive packet handler. Called with a pointer to the | |
77 | * application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP). | |
78 | * All other packets are dealt with without calling the handler. | |
79 | */ | |
80 | typedef void rxhand_f(uchar *, unsigned, unsigned, unsigned); | |
81 | ||
82 | /* | |
83 | * A timeout handler. Called after time interval has expired. | |
84 | */ | |
85 | typedef void thand_f(void); | |
86 | ||
2d966958 WD |
87 | #define NAMESIZE 16 |
88 | ||
89 | enum eth_state_t { | |
90 | ETH_STATE_INIT, | |
91 | ETH_STATE_PASSIVE, | |
92 | ETH_STATE_ACTIVE | |
93 | }; | |
94 | ||
95 | struct eth_device { | |
96 | char name[NAMESIZE]; | |
97 | unsigned char enetaddr[6]; | |
98 | int iobase; | |
99 | int state; | |
100 | ||
101 | int (*init) (struct eth_device*, bd_t*); | |
53a5c424 | 102 | int (*send) (struct eth_device*, volatile void* packet, int length); |
2d966958 WD |
103 | int (*recv) (struct eth_device*); |
104 | void (*halt) (struct eth_device*); | |
53a5c424 DU |
105 | #ifdef CONFIG_MCAST_TFTP |
106 | int (*mcast) (struct eth_device*, u32 ip, u8 set); | |
107 | #endif | |
ecee9324 | 108 | int (*write_hwaddr) (struct eth_device*); |
2d966958 WD |
109 | struct eth_device *next; |
110 | void *priv; | |
111 | }; | |
112 | ||
5dc0cf68 AF |
113 | extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */ |
114 | extern int eth_register(struct eth_device* dev);/* Register network device */ | |
115 | extern void eth_try_another(int first_restart); /* Change the device */ | |
a3d991bd | 116 | #ifdef CONFIG_NET_MULTI |
5dc0cf68 | 117 | extern void eth_set_current(void); /* set nterface to ethcur var */ |
a3d991bd | 118 | #endif |
5dc0cf68 AF |
119 | extern struct eth_device *eth_get_dev(void); /* get the current device MAC */ |
120 | extern struct eth_device *eth_get_dev_by_name(char *devname); /* get device */ | |
121 | extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */ | |
122 | extern int eth_get_dev_index (void); /* get the device index */ | |
3f6e6993 MF |
123 | extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr); |
124 | extern int eth_getenv_enetaddr(char *name, uchar *enetaddr); | |
125 | extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr); | |
86848a74 | 126 | extern int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr); |
5dc0cf68 AF |
127 | |
128 | extern int eth_init(bd_t *bis); /* Initialize the device */ | |
129 | extern int eth_send(volatile void *packet, int length); /* Send a packet */ | |
f85b6071 | 130 | #ifdef CONFIG_API |
5dc0cf68 | 131 | extern int eth_receive(volatile void *packet, int length); /* Receive a packet*/ |
f85b6071 | 132 | #endif |
5dc0cf68 AF |
133 | extern int eth_rx(void); /* Check for received packets */ |
134 | extern void eth_halt(void); /* stop SCC */ | |
135 | extern char *eth_get_name(void); /* get name of current device */ | |
2d966958 | 136 | |
53a5c424 DU |
137 | #ifdef CONFIG_MCAST_TFTP |
138 | int eth_mcast_join( IPaddr_t mcast_addr, u8 join); | |
139 | u32 ether_crc (size_t len, unsigned char const *p); | |
140 | #endif | |
141 | ||
2d966958 WD |
142 | |
143 | /**********************************************************************/ | |
144 | /* | |
145 | * Protocol headers. | |
146 | */ | |
147 | ||
148 | /* | |
149 | * Ethernet header | |
150 | */ | |
151 | typedef struct { | |
152 | uchar et_dest[6]; /* Destination node */ | |
153 | uchar et_src[6]; /* Source node */ | |
154 | ushort et_protlen; /* Protocol or length */ | |
155 | uchar et_dsap; /* 802 DSAP */ | |
156 | uchar et_ssap; /* 802 SSAP */ | |
157 | uchar et_ctl; /* 802 control */ | |
158 | uchar et_snap1; /* SNAP */ | |
159 | uchar et_snap2; | |
160 | uchar et_snap3; | |
161 | ushort et_prot; /* 802 protocol */ | |
162 | } Ethernet_t; | |
163 | ||
164 | #define ETHER_HDR_SIZE 14 /* Ethernet header size */ | |
165 | #define E802_HDR_SIZE 22 /* 802 ethernet header size */ | |
a3d991bd WD |
166 | |
167 | /* | |
168 | * Ethernet header | |
169 | */ | |
170 | typedef struct { | |
171 | uchar vet_dest[6]; /* Destination node */ | |
172 | uchar vet_src[6]; /* Source node */ | |
173 | ushort vet_vlan_type; /* PROT_VLAN */ | |
174 | ushort vet_tag; /* TAG of VLAN */ | |
175 | ushort vet_type; /* protocol type */ | |
176 | } VLAN_Ethernet_t; | |
177 | ||
178 | #define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */ | |
179 | ||
2d966958 WD |
180 | #define PROT_IP 0x0800 /* IP protocol */ |
181 | #define PROT_ARP 0x0806 /* IP ARP protocol */ | |
182 | #define PROT_RARP 0x8035 /* IP ARP protocol */ | |
a3d991bd | 183 | #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */ |
2d966958 WD |
184 | |
185 | #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */ | |
186 | #define IPPROTO_UDP 17 /* User Datagram Protocol */ | |
187 | ||
188 | /* | |
189 | * Internet Protocol (IP) header. | |
190 | */ | |
191 | typedef struct { | |
192 | uchar ip_hl_v; /* header length and version */ | |
193 | uchar ip_tos; /* type of service */ | |
194 | ushort ip_len; /* total length */ | |
195 | ushort ip_id; /* identification */ | |
196 | ushort ip_off; /* fragment offset field */ | |
197 | uchar ip_ttl; /* time to live */ | |
198 | uchar ip_p; /* protocol */ | |
199 | ushort ip_sum; /* checksum */ | |
200 | IPaddr_t ip_src; /* Source IP address */ | |
201 | IPaddr_t ip_dst; /* Destination IP address */ | |
202 | ushort udp_src; /* UDP source port */ | |
203 | ushort udp_dst; /* UDP destination port */ | |
204 | ushort udp_len; /* Length of UDP packet */ | |
205 | ushort udp_xsum; /* Checksum */ | |
206 | } IP_t; | |
207 | ||
e0c07b86 PT |
208 | #define IP_OFFS 0x1fff /* ip offset *= 8 */ |
209 | #define IP_FLAGS 0xe000 /* first 3 bits */ | |
210 | #define IP_FLAGS_RES 0x8000 /* reserved */ | |
211 | #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */ | |
212 | #define IP_FLAGS_MFRAG 0x2000 /* more fragments */ | |
213 | ||
2d966958 WD |
214 | #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8) |
215 | #define IP_HDR_SIZE (sizeof (IP_t)) | |
216 | ||
217 | ||
218 | /* | |
219 | * Address Resolution Protocol (ARP) header. | |
220 | */ | |
221 | typedef struct | |
222 | { | |
223 | ushort ar_hrd; /* Format of hardware address */ | |
224 | # define ARP_ETHER 1 /* Ethernet hardware address */ | |
225 | ushort ar_pro; /* Format of protocol address */ | |
226 | uchar ar_hln; /* Length of hardware address */ | |
227 | uchar ar_pln; /* Length of protocol address */ | |
228 | ushort ar_op; /* Operation */ | |
229 | # define ARPOP_REQUEST 1 /* Request to resolve address */ | |
230 | # define ARPOP_REPLY 2 /* Response to previous request */ | |
231 | ||
232 | # define RARPOP_REQUEST 3 /* Request to resolve address */ | |
233 | # define RARPOP_REPLY 4 /* Response to previous request */ | |
234 | ||
235 | /* | |
8bde7f77 WD |
236 | * The remaining fields are variable in size, according to |
237 | * the sizes above, and are defined as appropriate for | |
238 | * specific hardware/protocol combinations. | |
2d966958 WD |
239 | */ |
240 | uchar ar_data[0]; | |
241 | #if 0 | |
242 | uchar ar_sha[]; /* Sender hardware address */ | |
243 | uchar ar_spa[]; /* Sender protocol address */ | |
244 | uchar ar_tha[]; /* Target hardware address */ | |
245 | uchar ar_tpa[]; /* Target protocol address */ | |
246 | #endif /* 0 */ | |
247 | } ARP_t; | |
248 | ||
249 | #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */ | |
250 | ||
251 | /* | |
252 | * ICMP stuff (just enough to handle (host) redirect messages) | |
253 | */ | |
53677ef1 | 254 | #define ICMP_ECHO_REPLY 0 /* Echo reply */ |
2d966958 | 255 | #define ICMP_REDIRECT 5 /* Redirect (change route) */ |
73a8b27c | 256 | #define ICMP_ECHO_REQUEST 8 /* Echo request */ |
2d966958 WD |
257 | |
258 | /* Codes for REDIRECT. */ | |
259 | #define ICMP_REDIR_NET 0 /* Redirect Net */ | |
260 | #define ICMP_REDIR_HOST 1 /* Redirect Host */ | |
261 | ||
262 | typedef struct icmphdr { | |
263 | uchar type; | |
264 | uchar code; | |
265 | ushort checksum; | |
266 | union { | |
267 | struct { | |
268 | ushort id; | |
269 | ushort sequence; | |
270 | } echo; | |
271 | ulong gateway; | |
272 | struct { | |
273 | ushort __unused; | |
274 | ushort mtu; | |
275 | } frag; | |
276 | } un; | |
277 | } ICMP_t; | |
278 | ||
279 | ||
2d966958 WD |
280 | /* |
281 | * Maximum packet size; used to allocate packet storage. | |
282 | * TFTP packets can be 524 bytes + IP header + ethernet header. | |
283 | * Lets be conservative, and go for 38 * 16. (Must also be | |
284 | * a multiple of 32 bytes). | |
285 | */ | |
286 | /* | |
287 | * AS.HARNOIS : Better to set PKTSIZE to maximum size because | |
288 | * traffic type is not always controlled | |
289 | * maximum packet size = 1518 | |
290 | * maximum packet size and multiple of 32 bytes = 1536 | |
291 | */ | |
292 | #define PKTSIZE 1518 | |
293 | #define PKTSIZE_ALIGN 1536 | |
294 | /*#define PKTSIZE 608*/ | |
295 | ||
296 | /* | |
297 | * Maximum receive ring size; that is, the number of packets | |
298 | * we can buffer before overflow happens. Basically, this just | |
299 | * needs to be enough to prevent a packet being discarded while | |
300 | * we are processing the previous one. | |
301 | */ | |
302 | #define RINGSZ 4 | |
303 | #define RINGSZ_LOG2 2 | |
304 | ||
305 | /**********************************************************************/ | |
306 | /* | |
307 | * Globals. | |
308 | * | |
309 | * Note: | |
310 | * | |
311 | * All variables of type IPaddr_t are stored in NETWORK byte order | |
312 | * (big endian). | |
313 | */ | |
314 | ||
315 | /* net.c */ | |
316 | /** BOOTP EXTENTIONS **/ | |
317 | extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */ | |
318 | extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/ | |
319 | extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/ | |
1fe80d79 | 320 | #if defined(CONFIG_BOOTP_DNS2) |
fe389a82 SR |
321 | extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/ |
322 | #endif | |
2d966958 WD |
323 | extern char NetOurNISDomain[32]; /* Our NIS domain */ |
324 | extern char NetOurHostName[32]; /* Our hostname */ | |
325 | extern char NetOurRootPath[64]; /* Our root path */ | |
326 | extern ushort NetBootFileSize; /* Our boot file size in blocks */ | |
327 | /** END OF BOOTP EXTENTIONS **/ | |
328 | extern ulong NetBootFileXferSize; /* size of bootfile in bytes */ | |
329 | extern uchar NetOurEther[6]; /* Our ethernet address */ | |
330 | extern uchar NetServerEther[6]; /* Boot server enet address */ | |
331 | extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */ | |
332 | extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */ | |
333 | extern volatile uchar * NetTxPacket; /* THE transmit packet */ | |
334 | extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */ | |
d9bec9f4 MF |
335 | extern volatile uchar * NetRxPacket; /* Current receive packet */ |
336 | extern int NetRxPacketLen; /* Current rx packet length */ | |
2d966958 WD |
337 | extern unsigned NetIPID; /* IP ID (counting) */ |
338 | extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */ | |
68ceb29e | 339 | extern uchar NetEtherNullAddr[6]; |
2d966958 | 340 | |
53677ef1 WD |
341 | #define VLAN_NONE 4095 /* untagged */ |
342 | #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ | |
343 | extern ushort NetOurVLAN; /* Our VLAN */ | |
344 | extern ushort NetOurNativeVLAN; /* Our Native VLAN */ | |
a3d991bd | 345 | |
53677ef1 | 346 | extern uchar NetCDPAddr[6]; /* Ethernet CDP address */ |
a3d991bd WD |
347 | extern ushort CDPNativeVLAN; /* CDP returned native VLAN */ |
348 | extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */ | |
349 | ||
2d966958 WD |
350 | extern int NetState; /* Network loop state */ |
351 | #define NETLOOP_CONTINUE 1 | |
352 | #define NETLOOP_RESTART 2 | |
353 | #define NETLOOP_SUCCESS 3 | |
354 | #define NETLOOP_FAIL 4 | |
355 | ||
356 | #ifdef CONFIG_NET_MULTI | |
357 | extern int NetRestartWrap; /* Tried all network devices */ | |
358 | #endif | |
359 | ||
ea287deb | 360 | typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP } proto_t; |
2d966958 WD |
361 | |
362 | /* from net/net.c */ | |
363 | extern char BootFile[128]; /* Boot File name */ | |
364 | ||
1a32bf41 RG |
365 | #if defined(CONFIG_CMD_DNS) |
366 | extern char *NetDNSResolve; /* The host to resolve */ | |
367 | extern char *NetDNSenvvar; /* the env var to put the ip into */ | |
368 | #endif | |
369 | ||
639221c7 | 370 | #if defined(CONFIG_CMD_PING) |
53677ef1 | 371 | extern IPaddr_t NetPingIP; /* the ip address to ping */ |
73a8b27c WD |
372 | #endif |
373 | ||
639221c7 | 374 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
375 | /* when CDP completes these hold the return values */ |
376 | extern ushort CDPNativeVLAN; | |
377 | extern ushort CDPApplianceVLAN; | |
378 | #endif | |
379 | ||
639221c7 | 380 | #if defined(CONFIG_CMD_SNTP) |
53677ef1 | 381 | extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */ |
ea287deb WD |
382 | extern int NetTimeOffset; /* offset time from UTC */ |
383 | #endif | |
384 | ||
2d966958 WD |
385 | /* Initialize the network adapter */ |
386 | extern int NetLoop(proto_t); | |
387 | ||
388 | /* Shutdown adapters and cleanup */ | |
389 | extern void NetStop(void); | |
390 | ||
391 | /* Load failed. Start again. */ | |
392 | extern void NetStartAgain(void); | |
393 | ||
a3d991bd | 394 | /* Get size of the ethernet header when we send */ |
53677ef1 | 395 | extern int NetEthHdrSize(void); |
a3d991bd WD |
396 | |
397 | /* Set ethernet header; returns the size of the header */ | |
398 | extern int NetSetEther(volatile uchar *, uchar *, uint); | |
2d966958 WD |
399 | |
400 | /* Set IP header */ | |
401 | extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int); | |
402 | ||
403 | /* Checksum */ | |
404 | extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */ | |
405 | extern uint NetCksum(uchar *, int); /* Calculate the checksum */ | |
406 | ||
407 | /* Set callbacks */ | |
408 | extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */ | |
3e01d75f | 409 | extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */ |
2d966958 WD |
410 | |
411 | /* Transmit "NetTxPacket" */ | |
412 | extern void NetSendPacket(volatile uchar *, int); | |
413 | ||
73a8b27c WD |
414 | /* Transmit UDP packet, performing ARP request if needed */ |
415 | extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len); | |
416 | ||
2d966958 WD |
417 | /* Processes a received packet */ |
418 | extern void NetReceive(volatile uchar *, int); | |
419 | ||
2d966958 WD |
420 | /* |
421 | * The following functions are a bit ugly, but necessary to deal with | |
422 | * alignment restrictions on ARM. | |
423 | * | |
424 | * We're using inline functions, which had the smallest memory | |
425 | * footprint in our tests. | |
426 | */ | |
427 | /* return IP *in network byteorder* */ | |
33a4a70d | 428 | static inline IPaddr_t NetReadIP(volatile void *from) |
2d966958 WD |
429 | { |
430 | IPaddr_t ip; | |
33a4a70d | 431 | memcpy((void*)&ip, (void*)from, sizeof(ip)); |
2d966958 WD |
432 | return ip; |
433 | } | |
434 | ||
435 | /* return ulong *in network byteorder* */ | |
436 | static inline ulong NetReadLong(ulong *from) | |
437 | { | |
438 | ulong l; | |
439 | memcpy((void*)&l, (void*)from, sizeof(l)); | |
440 | return l; | |
441 | } | |
442 | ||
443 | /* write IP *in network byteorder* */ | |
444 | static inline void NetWriteIP(void *to, IPaddr_t ip) | |
445 | { | |
446 | memcpy(to, (void*)&ip, sizeof(ip)); | |
447 | } | |
448 | ||
449 | /* copy IP */ | |
33a4a70d | 450 | static inline void NetCopyIP(volatile void *to, void *from) |
2d966958 | 451 | { |
33a4a70d | 452 | memcpy((void*)to, from, sizeof(IPaddr_t)); |
2d966958 WD |
453 | } |
454 | ||
455 | /* copy ulong */ | |
456 | static inline void NetCopyLong(ulong *to, ulong *from) | |
457 | { | |
458 | memcpy((void*)to, (void*)from, sizeof(ulong)); | |
459 | } | |
460 | ||
50cca8b9 MR |
461 | /** |
462 | * is_zero_ether_addr - Determine if give Ethernet address is all zeros. | |
463 | * @addr: Pointer to a six-byte array containing the Ethernet address | |
464 | * | |
465 | * Return true if the address is all zeroes. | |
466 | */ | |
467 | static inline int is_zero_ether_addr(const u8 *addr) | |
468 | { | |
469 | return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]); | |
470 | } | |
471 | ||
472 | /** | |
473 | * is_multicast_ether_addr - Determine if the Ethernet address is a multicast. | |
474 | * @addr: Pointer to a six-byte array containing the Ethernet address | |
475 | * | |
476 | * Return true if the address is a multicast address. | |
477 | * By definition the broadcast address is also a multicast address. | |
478 | */ | |
479 | static inline int is_multicast_ether_addr(const u8 *addr) | |
480 | { | |
481 | return (0x01 & addr[0]); | |
482 | } | |
483 | ||
75edebe3 MF |
484 | /** |
485 | * is_valid_ether_addr - Determine if the given Ethernet address is valid | |
486 | * @addr: Pointer to a six-byte array containing the Ethernet address | |
487 | * | |
488 | * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not | |
489 | * a multicast address, and is not FF:FF:FF:FF:FF:FF. | |
490 | * | |
491 | * Return true if the address is valid. | |
492 | */ | |
493 | static inline int is_valid_ether_addr(const u8 * addr) | |
494 | { | |
495 | /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to | |
496 | * explicitly check for it here. */ | |
497 | return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr); | |
498 | } | |
499 | ||
2d966958 WD |
500 | /* Convert an IP address to a string */ |
501 | extern void ip_to_string (IPaddr_t x, char *s); | |
502 | ||
73a8b27c WD |
503 | /* Convert a string to ip address */ |
504 | extern IPaddr_t string_to_ip(char *s); | |
505 | ||
a3d991bd WD |
506 | /* Convert a VLAN id to a string */ |
507 | extern void VLAN_to_string (ushort x, char *s); | |
508 | ||
509 | /* Convert a string to a vlan id */ | |
510 | extern ushort string_to_VLAN(char *s); | |
511 | ||
a3d991bd WD |
512 | /* read a VLAN id from an environment variable */ |
513 | extern ushort getenv_VLAN(char *); | |
514 | ||
2d966958 | 515 | /* copy a filename (allow for "..." notation, limit length) */ |
77ddac94 | 516 | extern void copy_filename (char *dst, char *src, int size); |
2d966958 | 517 | |
91b469c9 MF |
518 | /* get a random source port */ |
519 | extern unsigned int random_port(void); | |
520 | ||
2d966958 WD |
521 | /**********************************************************************/ |
522 | ||
523 | #endif /* __NET_H__ */ |