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f739fcd8 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2d966958 WD |
2 | /* |
3 | * LiMon Monitor (LiMon) - Network. | |
4 | * | |
5 | * Copyright 1994 - 2000 Neil Russell. | |
6 | * (See License) | |
2d966958 WD |
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 | ||
2c4b3c19 | 15 | #include <asm/cache.h> |
2d966958 | 16 | #include <asm/byteorder.h> /* for nton* / ntoh* stuff */ |
9fb625ce | 17 | #include <env.h> |
dda52510 | 18 | #include <linux/if_ether.h> |
840ef4d4 | 19 | #include <rand.h> |
2d966958 | 20 | |
4ef8d53c JH |
21 | #define DEBUG_LL_STATE 0 /* Link local state machine changes */ |
22 | #define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ | |
23 | #define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ | |
24 | #define DEBUG_INT_STATE 0 /* Internal network state changes */ | |
2d966958 WD |
25 | |
26 | /* | |
27 | * The number of receive packet buffers, and the required packet buffer | |
28 | * alignment in memory. | |
29 | * | |
30 | */ | |
31 | ||
6d0f6bcf JCPV |
32 | #ifdef CONFIG_SYS_RX_ETH_BUFFER |
33 | # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER | |
1d0350ed | 34 | #else |
c6028835 | 35 | # define PKTBUFSRX 4 |
1d0350ed WD |
36 | #endif |
37 | ||
2c4b3c19 | 38 | #define PKTALIGN ARCH_DMA_MINALIGN |
2d966958 | 39 | |
a40db6d5 | 40 | /* ARP hardware address length */ |
41 | #define ARP_HLEN 6 | |
9f455bcb | 42 | /* |
43 | * The size of a MAC address in string form, each digit requires two chars | |
44 | * and five separator characters to form '00:00:00:00:00:00'. | |
45 | */ | |
46 | #define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1) | |
a40db6d5 | 47 | |
ea45cb0a | 48 | /* IPv4 addresses are always 32 bits in size */ |
049a95a7 JH |
49 | struct in_addr { |
50 | __be32 s_addr; | |
51 | }; | |
2d966958 | 52 | |
77f4e477 SG |
53 | /** |
54 | * do_tftpb - Run the tftpboot command | |
55 | * | |
56 | * @cmdtp: Command information for tftpboot | |
57 | * @flag: Command flags (CMD_FLAG_...) | |
58 | * @argc: Number of arguments | |
59 | * @argv: List of arguments | |
60 | * @return result (see enum command_ret_t) | |
61 | */ | |
62 | int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); | |
63 | ||
03eb129f LC |
64 | /** |
65 | * An incoming packet handler. | |
66 | * @param pkt pointer to the application packet | |
67 | * @param dport destination UDP port | |
68 | * @param sip source IP address | |
69 | * @param sport source UDP port | |
70 | * @param len packet length | |
2d966958 | 71 | */ |
03eb129f | 72 | typedef void rxhand_f(uchar *pkt, unsigned dport, |
049a95a7 | 73 | struct in_addr sip, unsigned sport, |
03eb129f | 74 | unsigned len); |
2d966958 | 75 | |
4793ee65 SG |
76 | /** |
77 | * An incoming ICMP packet handler. | |
78 | * @param type ICMP type | |
79 | * @param code ICMP code | |
80 | * @param dport destination UDP port | |
81 | * @param sip source IP address | |
82 | * @param sport source UDP port | |
83 | * @param pkt pointer to the ICMP packet data | |
84 | * @param len packet length | |
85 | */ | |
86 | typedef void rxhand_icmp_f(unsigned type, unsigned code, unsigned dport, | |
049a95a7 | 87 | struct in_addr sip, unsigned sport, uchar *pkt, unsigned len); |
4793ee65 | 88 | |
2d966958 WD |
89 | /* |
90 | * A timeout handler. Called after time interval has expired. | |
91 | */ | |
92 | typedef void thand_f(void); | |
93 | ||
2d966958 WD |
94 | enum eth_state_t { |
95 | ETH_STATE_INIT, | |
96 | ETH_STATE_PASSIVE, | |
97 | ETH_STATE_ACTIVE | |
98 | }; | |
99 | ||
05c3e68f JH |
100 | #ifdef CONFIG_DM_ETH |
101 | /** | |
102 | * struct eth_pdata - Platform data for Ethernet MAC controllers | |
103 | * | |
104 | * @iobase: The base address of the hardware registers | |
105 | * @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env | |
c74c8e66 | 106 | * @phy_interface: PHY interface to use - see PHY_INTERFACE_MODE_... |
f74264d6 | 107 | * @max_speed: Maximum speed of Ethernet connection supported by MAC |
3c6add98 | 108 | * @priv_pdata: device specific platdata |
05c3e68f JH |
109 | */ |
110 | struct eth_pdata { | |
111 | phys_addr_t iobase; | |
a40db6d5 | 112 | unsigned char enetaddr[ARP_HLEN]; |
c74c8e66 | 113 | int phy_interface; |
f74264d6 | 114 | int max_speed; |
3c6add98 | 115 | void *priv_pdata; |
05c3e68f JH |
116 | }; |
117 | ||
a1ca92ea SG |
118 | enum eth_recv_flags { |
119 | /* | |
120 | * Check hardware device for new packets (otherwise only return those | |
121 | * which are already in the memory buffer ready to process) | |
122 | */ | |
123 | ETH_RECV_CHECK_DEVICE = 1 << 0, | |
124 | }; | |
125 | ||
05c3e68f JH |
126 | /** |
127 | * struct eth_ops - functions of Ethernet MAC controllers | |
128 | * | |
129 | * start: Prepare the hardware to send and receive packets | |
130 | * send: Send the bytes passed in "packet" as a packet on the wire | |
17591405 JH |
131 | * recv: Check if the hardware received a packet. If so, set the pointer to the |
132 | * packet buffer in the packetp parameter. If not, return an error or 0 to | |
63c9729a JH |
133 | * indicate that the hardware receive FIFO is empty. If 0 is returned, the |
134 | * network stack will not process the empty packet, but free_pkt() will be | |
135 | * called if supplied | |
136 | * free_pkt: Give the driver an opportunity to manage its packet buffer memory | |
137 | * when the network stack is finished processing it. This will only be | |
138 | * called when no error was returned from recv - optional | |
05c3e68f JH |
139 | * stop: Stop the hardware from looking for packets - may be called even if |
140 | * state == PASSIVE | |
141 | * mcast: Join or leave a multicast group (for TFTP) - optional | |
142 | * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux | |
143 | * on some platforms like ARM). This function expects the | |
b86f795a SG |
144 | * eth_pdata::enetaddr field to be populated. The method can |
145 | * return -ENOSYS to indicate that this is not implemented for | |
146 | this hardware - optional. | |
05c3e68f JH |
147 | * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a |
148 | * ROM on the board. This is how the driver should expose it | |
149 | * to the network stack. This function should fill in the | |
150 | * eth_pdata::enetaddr field - optional | |
151 | */ | |
152 | struct eth_ops { | |
153 | int (*start)(struct udevice *dev); | |
154 | int (*send)(struct udevice *dev, void *packet, int length); | |
a1ca92ea | 155 | int (*recv)(struct udevice *dev, int flags, uchar **packetp); |
63c9729a | 156 | int (*free_pkt)(struct udevice *dev, uchar *packet, int length); |
05c3e68f | 157 | void (*stop)(struct udevice *dev); |
05c3e68f | 158 | int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join); |
05c3e68f JH |
159 | int (*write_hwaddr)(struct udevice *dev); |
160 | int (*read_rom_hwaddr)(struct udevice *dev); | |
161 | }; | |
162 | ||
163 | #define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops) | |
164 | ||
165 | struct udevice *eth_get_dev(void); /* get the current device */ | |
e58780dc JH |
166 | /* |
167 | * The devname can be either an exact name given by the driver or device tree | |
168 | * or it can be an alias of the form "eth%d" | |
169 | */ | |
170 | struct udevice *eth_get_dev_by_name(const char *devname); | |
05c3e68f | 171 | unsigned char *eth_get_ethaddr(void); /* get the current device MAC */ |
eaa8a195 | 172 | |
05c3e68f | 173 | /* Used only when NetConsole is enabled */ |
eaa8a195 | 174 | int eth_is_active(struct udevice *dev); /* Test device for active state */ |
05c3e68f JH |
175 | int eth_init_state_only(void); /* Set active state */ |
176 | void eth_halt_state_only(void); /* Set passive state */ | |
177 | #endif | |
178 | ||
179 | #ifndef CONFIG_DM_ETH | |
2d966958 | 180 | struct eth_device { |
1666fa58 | 181 | #define ETH_NAME_LEN 20 |
2c07c329 | 182 | char name[ETH_NAME_LEN]; |
a40db6d5 | 183 | unsigned char enetaddr[ARP_HLEN]; |
16ae7827 | 184 | phys_addr_t iobase; |
2d966958 WD |
185 | int state; |
186 | ||
a34f2075 JH |
187 | int (*init)(struct eth_device *, bd_t *); |
188 | int (*send)(struct eth_device *, void *packet, int length); | |
189 | int (*recv)(struct eth_device *); | |
190 | void (*halt)(struct eth_device *); | |
67bb9842 | 191 | int (*mcast)(struct eth_device *, const u8 *enetaddr, int join); |
a34f2075 | 192 | int (*write_hwaddr)(struct eth_device *); |
2d966958 | 193 | struct eth_device *next; |
fea7dcae | 194 | int index; |
2d966958 WD |
195 | void *priv; |
196 | }; | |
197 | ||
ff997432 JH |
198 | int eth_register(struct eth_device *dev);/* Register network device */ |
199 | int eth_unregister(struct eth_device *dev);/* Remove network device */ | |
06370590 | 200 | |
06370590 KP |
201 | extern struct eth_device *eth_current; |
202 | ||
92163873 | 203 | static __always_inline struct eth_device *eth_get_dev(void) |
f8be7d65 | 204 | { |
f8be7d65 JH |
205 | return eth_current; |
206 | } | |
84eb1fba JH |
207 | struct eth_device *eth_get_dev_by_name(const char *devname); |
208 | struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */ | |
8b2c9a71 | 209 | |
84eb1fba | 210 | /* get the current device MAC */ |
8b2c9a71 JH |
211 | static inline unsigned char *eth_get_ethaddr(void) |
212 | { | |
213 | if (eth_current) | |
214 | return eth_current->enetaddr; | |
215 | return NULL; | |
216 | } | |
217 | ||
eaa8a195 BN |
218 | /* Used only when NetConsole is enabled */ |
219 | int eth_is_active(struct eth_device *dev); /* Test device for active state */ | |
84eb1fba | 220 | /* Set active state */ |
92163873 | 221 | static __always_inline int eth_init_state_only(void) |
84eb1fba JH |
222 | { |
223 | eth_get_dev()->state = ETH_STATE_ACTIVE; | |
224 | ||
225 | return 0; | |
226 | } | |
227 | /* Set passive state */ | |
92163873 | 228 | static __always_inline void eth_halt_state_only(void) |
84eb1fba JH |
229 | { |
230 | eth_get_dev()->state = ETH_STATE_PASSIVE; | |
231 | } | |
232 | ||
233 | /* | |
234 | * Set the hardware address for an ethernet interface based on 'eth%daddr' | |
235 | * environment variable (or just 'ethaddr' if eth_number is 0). | |
236 | * Args: | |
237 | * base_name - base name for device (normally "eth") | |
238 | * eth_number - value of %d (0 for first device of this type) | |
239 | * Returns: | |
240 | * 0 is success, non-zero is error status from driver. | |
241 | */ | |
242 | int eth_write_hwaddr(struct eth_device *dev, const char *base_name, | |
243 | int eth_number); | |
244 | ||
245 | int usb_eth_initialize(bd_t *bi); | |
05c3e68f | 246 | #endif |
84eb1fba | 247 | |
d2eaec60 | 248 | int eth_initialize(void); /* Initialize network subsystem */ |
84eb1fba JH |
249 | void eth_try_another(int first_restart); /* Change the device */ |
250 | void eth_set_current(void); /* set nterface to ethcur var */ | |
251 | ||
ff997432 | 252 | int eth_get_dev_index(void); /* get the device index */ |
7616e785 | 253 | |
5350bc8f | 254 | /** |
fd1e959e | 255 | * eth_env_set_enetaddr_by_index() - set the MAC address environment variable |
5350bc8f RQ |
256 | * |
257 | * This sets up an environment variable with the given MAC address (@enetaddr). | |
258 | * The environment variable to be set is defined by <@base_name><@index>addr. | |
259 | * If @index is 0 it is omitted. For common Ethernet this means ethaddr, | |
260 | * eth1addr, etc. | |
261 | * | |
262 | * @base_name: Base name for variable, typically "eth" | |
263 | * @index: Index of interface being updated (>=0) | |
264 | * @enetaddr: Pointer to MAC address to put into the variable | |
265 | * @return 0 if OK, other value on error | |
266 | */ | |
fd1e959e | 267 | int eth_env_set_enetaddr_by_index(const char *base_name, int index, |
5350bc8f RQ |
268 | uchar *enetaddr); |
269 | ||
270 | ||
d4a37553 M |
271 | /* |
272 | * Initialize USB ethernet device with CONFIG_DM_ETH | |
273 | * Returns: | |
274 | * 0 is success, non-zero is error status. | |
275 | */ | |
276 | int usb_ether_init(void); | |
277 | ||
7616e785 SG |
278 | /* |
279 | * Get the hardware address for an ethernet interface . | |
280 | * Args: | |
281 | * base_name - base name for device (normally "eth") | |
282 | * index - device index number (0 for first) | |
283 | * enetaddr - returns 6 byte hardware address | |
284 | * Returns: | |
285 | * Return true if the address is valid. | |
286 | */ | |
35affd7a | 287 | int eth_env_get_enetaddr_by_index(const char *base_name, int index, |
ff997432 | 288 | uchar *enetaddr); |
5dc0cf68 | 289 | |
d2eaec60 | 290 | int eth_init(void); /* Initialize the device */ |
ff997432 | 291 | int eth_send(void *packet, int length); /* Send a packet */ |
23cd1385 | 292 | |
0efe1bcf | 293 | #if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) |
ff997432 | 294 | int eth_receive(void *packet, int length); /* Receive a packet*/ |
db288a96 | 295 | extern void (*push_packet)(void *packet, int length); |
f85b6071 | 296 | #endif |
ff997432 JH |
297 | int eth_rx(void); /* Check for received packets */ |
298 | void eth_halt(void); /* stop SCC */ | |
84eb1fba | 299 | const char *eth_get_name(void); /* get name of current device */ |
049a95a7 | 300 | int eth_mcast_join(struct in_addr mcast_addr, int join); |
2d966958 WD |
301 | |
302 | /**********************************************************************/ | |
303 | /* | |
304 | * Protocol headers. | |
305 | */ | |
306 | ||
307 | /* | |
308 | * Ethernet header | |
309 | */ | |
cb487f56 JH |
310 | |
311 | struct ethernet_hdr { | |
a40db6d5 | 312 | u8 et_dest[ARP_HLEN]; /* Destination node */ |
313 | u8 et_src[ARP_HLEN]; /* Source node */ | |
314 | u16 et_protlen; /* Protocol or length */ | |
704f3acf | 315 | } __attribute__((packed)); |
cb487f56 JH |
316 | |
317 | /* Ethernet header size */ | |
318 | #define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr)) | |
319 | ||
a7c3d5e2 BM |
320 | #define ETH_FCS_LEN 4 /* Octets in the FCS */ |
321 | ||
cb487f56 | 322 | struct e802_hdr { |
a40db6d5 | 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 */ | |
717234e0 ST |
330 | u8 et_snap2; |
331 | u8 et_snap3; | |
a40db6d5 | 332 | u16 et_prot; /* 802 protocol */ |
704f3acf | 333 | } __attribute__((packed)); |
2d966958 | 334 | |
da5ebe2c | 335 | /* 802 + SNAP + ethernet header size */ |
cb487f56 | 336 | #define E802_HDR_SIZE (sizeof(struct e802_hdr)) |
a3d991bd WD |
337 | |
338 | /* | |
da5ebe2c | 339 | * Virtual LAN Ethernet header |
a3d991bd | 340 | */ |
c68cca35 | 341 | struct vlan_ethernet_hdr { |
a40db6d5 | 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 */ | |
704f3acf | 347 | } __attribute__((packed)); |
a3d991bd | 348 | |
c68cca35 JH |
349 | /* VLAN Ethernet header size */ |
350 | #define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr)) | |
a3d991bd | 351 | |
2d966958 WD |
352 | #define PROT_IP 0x0800 /* IP protocol */ |
353 | #define PROT_ARP 0x0806 /* IP ARP protocol */ | |
d8970dae | 354 | #define PROT_WOL 0x0842 /* ether-wake WoL protocol */ |
2d966958 | 355 | #define PROT_RARP 0x8035 /* IP ARP protocol */ |
a3d991bd | 356 | #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */ |
99d4c6d3 SR |
357 | #define PROT_IPV6 0x86dd /* IPv6 over bluebook */ |
358 | #define PROT_PPP_SES 0x8864 /* PPPoE session messages */ | |
f641a8ac | 359 | #define PROT_NCSI 0x88f8 /* NC-SI control packets */ |
2d966958 WD |
360 | |
361 | #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */ | |
362 | #define IPPROTO_UDP 17 /* User Datagram Protocol */ | |
363 | ||
364 | /* | |
c5c59df0 | 365 | * Internet Protocol (IP) header. |
2d966958 | 366 | */ |
c5c59df0 | 367 | struct ip_hdr { |
717234e0 ST |
368 | u8 ip_hl_v; /* header length and version */ |
369 | u8 ip_tos; /* type of service */ | |
370 | u16 ip_len; /* total length */ | |
371 | u16 ip_id; /* identification */ | |
372 | u16 ip_off; /* fragment offset field */ | |
373 | u8 ip_ttl; /* time to live */ | |
374 | u8 ip_p; /* protocol */ | |
375 | u16 ip_sum; /* checksum */ | |
049a95a7 JH |
376 | struct in_addr ip_src; /* Source IP address */ |
377 | struct in_addr ip_dst; /* Destination IP address */ | |
704f3acf | 378 | } __attribute__((packed)); |
2d966958 | 379 | |
e0c07b86 PT |
380 | #define IP_OFFS 0x1fff /* ip offset *= 8 */ |
381 | #define IP_FLAGS 0xe000 /* first 3 bits */ | |
382 | #define IP_FLAGS_RES 0x8000 /* reserved */ | |
383 | #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */ | |
384 | #define IP_FLAGS_MFRAG 0x2000 /* more fragments */ | |
385 | ||
c5c59df0 JH |
386 | #define IP_HDR_SIZE (sizeof(struct ip_hdr)) |
387 | ||
388 | /* | |
389 | * Internet Protocol (IP) + UDP header. | |
390 | */ | |
391 | struct ip_udp_hdr { | |
717234e0 ST |
392 | u8 ip_hl_v; /* header length and version */ |
393 | u8 ip_tos; /* type of service */ | |
394 | u16 ip_len; /* total length */ | |
395 | u16 ip_id; /* identification */ | |
396 | u16 ip_off; /* fragment offset field */ | |
397 | u8 ip_ttl; /* time to live */ | |
398 | u8 ip_p; /* protocol */ | |
399 | u16 ip_sum; /* checksum */ | |
049a95a7 JH |
400 | struct in_addr ip_src; /* Source IP address */ |
401 | struct in_addr ip_dst; /* Destination IP address */ | |
717234e0 ST |
402 | u16 udp_src; /* UDP source port */ |
403 | u16 udp_dst; /* UDP destination port */ | |
404 | u16 udp_len; /* Length of UDP packet */ | |
405 | u16 udp_xsum; /* Checksum */ | |
704f3acf | 406 | } __attribute__((packed)); |
2d966958 | 407 | |
594c26f8 | 408 | #define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr)) |
c5c59df0 | 409 | #define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE) |
2d966958 WD |
410 | |
411 | /* | |
412 | * Address Resolution Protocol (ARP) header. | |
413 | */ | |
738853bb | 414 | struct arp_hdr { |
717234e0 | 415 | u16 ar_hrd; /* Format of hardware address */ |
2d966958 | 416 | # define ARP_ETHER 1 /* Ethernet hardware address */ |
717234e0 ST |
417 | u16 ar_pro; /* Format of protocol address */ |
418 | u8 ar_hln; /* Length of hardware address */ | |
717234e0 | 419 | u8 ar_pln; /* Length of protocol address */ |
674bb249 | 420 | # define ARP_PLEN 4 |
717234e0 | 421 | u16 ar_op; /* Operation */ |
2d966958 WD |
422 | # define ARPOP_REQUEST 1 /* Request to resolve address */ |
423 | # define ARPOP_REPLY 2 /* Response to previous request */ | |
424 | ||
425 | # define RARPOP_REQUEST 3 /* Request to resolve address */ | |
426 | # define RARPOP_REPLY 4 /* Response to previous request */ | |
427 | ||
428 | /* | |
8bde7f77 WD |
429 | * The remaining fields are variable in size, according to |
430 | * the sizes above, and are defined as appropriate for | |
431 | * specific hardware/protocol combinations. | |
2d966958 | 432 | */ |
717234e0 | 433 | u8 ar_data[0]; |
674bb249 JH |
434 | #define ar_sha ar_data[0] |
435 | #define ar_spa ar_data[ARP_HLEN] | |
436 | #define ar_tha ar_data[ARP_HLEN + ARP_PLEN] | |
437 | #define ar_tpa ar_data[ARP_HLEN + ARP_PLEN + ARP_HLEN] | |
2d966958 | 438 | #if 0 |
717234e0 ST |
439 | u8 ar_sha[]; /* Sender hardware address */ |
440 | u8 ar_spa[]; /* Sender protocol address */ | |
441 | u8 ar_tha[]; /* Target hardware address */ | |
442 | u8 ar_tpa[]; /* Target protocol address */ | |
2d966958 | 443 | #endif /* 0 */ |
704f3acf | 444 | } __attribute__((packed)); |
2d966958 WD |
445 | |
446 | #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */ | |
447 | ||
448 | /* | |
449 | * ICMP stuff (just enough to handle (host) redirect messages) | |
450 | */ | |
53677ef1 | 451 | #define ICMP_ECHO_REPLY 0 /* Echo reply */ |
4793ee65 | 452 | #define ICMP_NOT_REACH 3 /* Detination unreachable */ |
2d966958 | 453 | #define ICMP_REDIRECT 5 /* Redirect (change route) */ |
73a8b27c | 454 | #define ICMP_ECHO_REQUEST 8 /* Echo request */ |
2d966958 WD |
455 | |
456 | /* Codes for REDIRECT. */ | |
457 | #define ICMP_REDIR_NET 0 /* Redirect Net */ | |
458 | #define ICMP_REDIR_HOST 1 /* Redirect Host */ | |
459 | ||
4793ee65 SG |
460 | /* Codes for NOT_REACH */ |
461 | #define ICMP_NOT_REACH_PORT 3 /* Port unreachable */ | |
462 | ||
e0a63079 | 463 | struct icmp_hdr { |
717234e0 ST |
464 | u8 type; |
465 | u8 code; | |
466 | u16 checksum; | |
2d966958 WD |
467 | union { |
468 | struct { | |
717234e0 ST |
469 | u16 id; |
470 | u16 sequence; | |
2d966958 | 471 | } echo; |
5917e7d1 | 472 | u32 gateway; |
2d966958 | 473 | struct { |
717234e0 ST |
474 | u16 unused; |
475 | u16 mtu; | |
2d966958 | 476 | } frag; |
717234e0 | 477 | u8 data[0]; |
2d966958 | 478 | } un; |
704f3acf | 479 | } __attribute__((packed)); |
2d966958 | 480 | |
e0a63079 JH |
481 | #define ICMP_HDR_SIZE (sizeof(struct icmp_hdr)) |
482 | #define IP_ICMP_HDR_SIZE (IP_HDR_SIZE + ICMP_HDR_SIZE) | |
2d966958 | 483 | |
2d966958 | 484 | /* |
700877a6 SA |
485 | * Maximum packet size; used to allocate packet storage. Use |
486 | * the maxium Ethernet frame size as specified by the Ethernet | |
487 | * standard including the 802.1Q tag (VLAN tagging). | |
488 | * maximum packet size = 1522 | |
2d966958 WD |
489 | * maximum packet size and multiple of 32 bytes = 1536 |
490 | */ | |
700877a6 | 491 | #define PKTSIZE 1522 |
2d966958 | 492 | #define PKTSIZE_ALIGN 1536 |
2d966958 WD |
493 | |
494 | /* | |
495 | * Maximum receive ring size; that is, the number of packets | |
496 | * we can buffer before overflow happens. Basically, this just | |
497 | * needs to be enough to prevent a packet being discarded while | |
498 | * we are processing the previous one. | |
499 | */ | |
500 | #define RINGSZ 4 | |
501 | #define RINGSZ_LOG2 2 | |
502 | ||
503 | /**********************************************************************/ | |
504 | /* | |
505 | * Globals. | |
506 | * | |
507 | * Note: | |
508 | * | |
049a95a7 | 509 | * All variables of type struct in_addr are stored in NETWORK byte order |
2d966958 WD |
510 | * (big endian). |
511 | */ | |
512 | ||
513 | /* net.c */ | |
514 | /** BOOTP EXTENTIONS **/ | |
049a95a7 JH |
515 | extern struct in_addr net_gateway; /* Our gateway IP address */ |
516 | extern struct in_addr net_netmask; /* Our subnet mask (0 = unknown) */ | |
517 | /* Our Domain Name Server (0 = unknown) */ | |
518 | extern struct in_addr net_dns_server; | |
1fe80d79 | 519 | #if defined(CONFIG_BOOTP_DNS2) |
049a95a7 JH |
520 | /* Our 2nd Domain Name Server (0 = unknown) */ |
521 | extern struct in_addr net_dns_server2; | |
fe389a82 | 522 | #endif |
586cbe51 JH |
523 | extern char net_nis_domain[32]; /* Our IS domain */ |
524 | extern char net_hostname[32]; /* Our hostname */ | |
525 | extern char net_root_path[64]; /* Our root path */ | |
2d966958 | 526 | /** END OF BOOTP EXTENTIONS **/ |
a40db6d5 | 527 | extern u8 net_ethaddr[ARP_HLEN]; /* Our ethernet address */ |
528 | extern u8 net_server_ethaddr[ARP_HLEN]; /* Boot server enet address */ | |
049a95a7 JH |
529 | extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */ |
530 | extern struct in_addr net_server_ip; /* Server IP addr (0 = unknown) */ | |
1203fcce | 531 | extern uchar *net_tx_packet; /* THE transmit packet */ |
2a504df0 | 532 | extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ |
1203fcce JH |
533 | extern uchar *net_rx_packet; /* Current receive packet */ |
534 | extern int net_rx_packet_len; /* Current rx packet length */ | |
a40db6d5 | 535 | extern const u8 net_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */ |
536 | extern const u8 net_null_ethaddr[ARP_HLEN]; | |
2d966958 | 537 | |
b28e28bb JH |
538 | #define VLAN_NONE 4095 /* untagged */ |
539 | #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ | |
4fd5055f JH |
540 | extern ushort net_our_vlan; /* Our VLAN */ |
541 | extern ushort net_native_vlan; /* Our Native VLAN */ | |
a3d991bd | 542 | |
bc0571fc | 543 | extern int net_restart_wrap; /* Tried all network devices */ |
2d966958 | 544 | |
e4bf0c5c SG |
545 | enum proto_t { |
546 | BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, | |
d8970dae | 547 | TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL |
e4bf0c5c | 548 | }; |
2d966958 | 549 | |
11a69ff8 | 550 | extern char net_boot_file_name[1024];/* Boot File name */ |
449312c1 AG |
551 | /* Indicates whether the file name was specified on the command line */ |
552 | extern bool net_boot_file_name_explicit; | |
1411157d JH |
553 | /* The actual transferred size of the bootfile (in bytes) */ |
554 | extern u32 net_boot_file_size; | |
555 | /* Boot file size in blocks as reported by the DHCP server */ | |
556 | extern u32 net_boot_file_expected_size_in_blocks; | |
2d966958 | 557 | |
1a32bf41 | 558 | #if defined(CONFIG_CMD_DNS) |
786eac5f JH |
559 | extern char *net_dns_resolve; /* The host to resolve */ |
560 | extern char *net_dns_env_var; /* the env var to put the ip into */ | |
1a32bf41 RG |
561 | #endif |
562 | ||
639221c7 | 563 | #if defined(CONFIG_CMD_PING) |
049a95a7 | 564 | extern struct in_addr net_ping_ip; /* the ip address to ping */ |
73a8b27c WD |
565 | #endif |
566 | ||
639221c7 | 567 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 568 | /* when CDP completes these hold the return values */ |
6aede5b7 JH |
569 | extern ushort cdp_native_vlan; /* CDP returned native VLAN */ |
570 | extern ushort cdp_appliance_vlan; /* CDP returned appliance VLAN */ | |
17351883 JH |
571 | |
572 | /* | |
573 | * Check for a CDP packet by examining the received MAC address field | |
574 | */ | |
0adb5b76 | 575 | static inline int is_cdp_packet(const uchar *ethaddr) |
17351883 | 576 | { |
a40db6d5 | 577 | extern const u8 net_cdp_ethaddr[ARP_HLEN]; |
17351883 | 578 | |
a40db6d5 | 579 | return memcmp(ethaddr, net_cdp_ethaddr, ARP_HLEN) == 0; |
17351883 | 580 | } |
a3d991bd WD |
581 | #endif |
582 | ||
639221c7 | 583 | #if defined(CONFIG_CMD_SNTP) |
049a95a7 | 584 | extern struct in_addr net_ntp_server; /* the ip address to NTP */ |
bc0571fc | 585 | extern int net_ntp_time_offset; /* offset time from UTC */ |
ea287deb WD |
586 | #endif |
587 | ||
2d966958 | 588 | /* Initialize the network adapter */ |
ff997432 | 589 | void net_init(void); |
bc0571fc | 590 | int net_loop(enum proto_t); |
2d966958 WD |
591 | |
592 | /* Load failed. Start again. */ | |
bc0571fc | 593 | int net_start_again(void); |
2d966958 | 594 | |
a3d991bd | 595 | /* Get size of the ethernet header when we send */ |
1203fcce | 596 | int net_eth_hdr_size(void); |
a3d991bd WD |
597 | |
598 | /* Set ethernet header; returns the size of the header */ | |
1203fcce | 599 | int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot); |
ff997432 | 600 | int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot); |
2d966958 WD |
601 | |
602 | /* Set IP header */ | |
5d457ecb DH |
603 | void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source, |
604 | u16 pkt_len, u8 proto); | |
049a95a7 | 605 | void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, |
4b11c916 | 606 | int sport, int len); |
2d966958 | 607 | |
9b0e35cb SG |
608 | /** |
609 | * compute_ip_checksum() - Compute IP checksum | |
610 | * | |
611 | * @addr: Address to check (must be 16-bit aligned) | |
612 | * @nbytes: Number of bytes to check (normally a multiple of 2) | |
613 | * @return 16-bit IP checksum | |
614 | */ | |
615 | unsigned compute_ip_checksum(const void *addr, unsigned nbytes); | |
616 | ||
617 | /** | |
618 | * add_ip_checksums() - add two IP checksums | |
619 | * | |
620 | * @offset: Offset of first sum (if odd we do a byte-swap) | |
621 | * @sum: First checksum | |
622 | * @new_sum: New checksum to add | |
623 | * @return updated 16-bit IP checksum | |
624 | */ | |
625 | unsigned add_ip_checksums(unsigned offset, unsigned sum, unsigned new_sum); | |
626 | ||
627 | /** | |
628 | * ip_checksum_ok() - check if a checksum is correct | |
629 | * | |
630 | * This works by making sure the checksum sums to 0 | |
631 | * | |
632 | * @addr: Address to check (must be 16-bit aligned) | |
633 | * @nbytes: Number of bytes to check (normally a multiple of 2) | |
634 | * @return true if the checksum matches, false if not | |
635 | */ | |
636 | int ip_checksum_ok(const void *addr, unsigned nbytes); | |
637 | ||
d280d3f4 | 638 | /* Callbacks */ |
ff997432 JH |
639 | rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */ |
640 | void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */ | |
641 | rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */ | |
642 | void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */ | |
3f02c98b | 643 | bool arp_is_waiting(void); /* Waiting for ARP reply? */ |
ff997432 | 644 | void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */ |
bc0571fc | 645 | void net_set_timeout_handler(ulong, thand_f *);/* Set timeout handler */ |
2d966958 | 646 | |
22f6e99d JH |
647 | /* Network loop state */ |
648 | enum net_loop_state { | |
649 | NETLOOP_CONTINUE, | |
650 | NETLOOP_RESTART, | |
651 | NETLOOP_SUCCESS, | |
652 | NETLOOP_FAIL | |
653 | }; | |
06370590 KP |
654 | extern enum net_loop_state net_state; |
655 | ||
22f6e99d JH |
656 | static inline void net_set_state(enum net_loop_state state) |
657 | { | |
4ef8d53c | 658 | debug_cond(DEBUG_INT_STATE, "--- NetState set to %d\n", state); |
22f6e99d JH |
659 | net_state = state; |
660 | } | |
661 | ||
ac3f26cc JH |
662 | /* |
663 | * net_get_async_tx_pkt_buf - Get a packet buffer that is not in use for | |
664 | * sending an asynchronous reply | |
665 | * | |
666 | * returns - ptr to packet buffer | |
667 | */ | |
668 | uchar * net_get_async_tx_pkt_buf(void); | |
669 | ||
e94070c4 | 670 | /* Transmit a packet */ |
1203fcce | 671 | static inline void net_send_packet(uchar *pkt, int len) |
adf5d93e | 672 | { |
60304592 | 673 | /* Currently no way to return errors from eth_send() */ |
adf5d93e JH |
674 | (void) eth_send(pkt, len); |
675 | } | |
2d966958 | 676 | |
206d07fd | 677 | /* |
1203fcce | 678 | * Transmit "net_tx_packet" as UDP packet, performing ARP request if needed |
ece223b5 | 679 | * (ether will be populated) |
206d07fd JH |
680 | * |
681 | * @param ether Raw packet buffer | |
682 | * @param dest IP address to send the datagram to | |
683 | * @param dport Destination UDP port | |
684 | * @param sport Source UDP port | |
685 | * @param payload_len Length of data after the UDP header | |
686 | */ | |
5d457ecb DH |
687 | int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, |
688 | int payload_len, int proto, u8 action, u32 tcp_seq_num, | |
689 | u32 tcp_ack_num); | |
1203fcce | 690 | int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, |
206d07fd | 691 | int sport, int payload_len); |
73a8b27c | 692 | |
2d966958 | 693 | /* Processes a received packet */ |
2a504df0 | 694 | void net_process_received_packet(uchar *in_packet, int len); |
2d966958 | 695 | |
99761e53 | 696 | #if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) |
6a38a5f3 | 697 | void nc_start(void); |
049a95a7 | 698 | int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port, |
8a0eccb1 | 699 | unsigned src_port, unsigned len); |
48522bb5 JH |
700 | #endif |
701 | ||
92163873 | 702 | static __always_inline int eth_is_on_demand_init(void) |
f8be7d65 | 703 | { |
99761e53 | 704 | #if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) |
f8be7d65 JH |
705 | extern enum proto_t net_loop_last_protocol; |
706 | ||
707 | return net_loop_last_protocol != NETCONS; | |
708 | #else | |
709 | return 1; | |
710 | #endif | |
711 | } | |
712 | ||
713 | static inline void eth_set_last_protocol(int protocol) | |
714 | { | |
99761e53 | 715 | #if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) |
f8be7d65 JH |
716 | extern enum proto_t net_loop_last_protocol; |
717 | ||
718 | net_loop_last_protocol = protocol; | |
719 | #endif | |
720 | } | |
721 | ||
e4a3d57d SG |
722 | /* |
723 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
724 | * the boot file. | |
725 | */ | |
726 | void net_auto_load(void); | |
727 | ||
2d966958 WD |
728 | /* |
729 | * The following functions are a bit ugly, but necessary to deal with | |
730 | * alignment restrictions on ARM. | |
731 | * | |
732 | * We're using inline functions, which had the smallest memory | |
733 | * footprint in our tests. | |
734 | */ | |
735 | /* return IP *in network byteorder* */ | |
049a95a7 | 736 | static inline struct in_addr net_read_ip(void *from) |
2d966958 | 737 | { |
049a95a7 | 738 | struct in_addr ip; |
b28e28bb JH |
739 | |
740 | memcpy((void *)&ip, (void *)from, sizeof(ip)); | |
2d966958 WD |
741 | return ip; |
742 | } | |
743 | ||
744 | /* return ulong *in network byteorder* */ | |
bbfc5627 | 745 | static inline u32 net_read_u32(void *from) |
2d966958 | 746 | { |
5917e7d1 | 747 | u32 l; |
b28e28bb JH |
748 | |
749 | memcpy((void *)&l, (void *)from, sizeof(l)); | |
2d966958 WD |
750 | return l; |
751 | } | |
752 | ||
753 | /* write IP *in network byteorder* */ | |
049a95a7 | 754 | static inline void net_write_ip(void *to, struct in_addr ip) |
2d966958 | 755 | { |
b28e28bb | 756 | memcpy(to, (void *)&ip, sizeof(ip)); |
2d966958 WD |
757 | } |
758 | ||
759 | /* copy IP */ | |
049a95a7 | 760 | static inline void net_copy_ip(void *to, void *from) |
2d966958 | 761 | { |
049a95a7 | 762 | memcpy((void *)to, from, sizeof(struct in_addr)); |
2d966958 WD |
763 | } |
764 | ||
765 | /* copy ulong */ | |
bbfc5627 | 766 | static inline void net_copy_u32(void *to, void *from) |
2d966958 | 767 | { |
5917e7d1 | 768 | memcpy((void *)to, (void *)from, sizeof(u32)); |
2d966958 WD |
769 | } |
770 | ||
50cca8b9 | 771 | /** |
0adb5b76 | 772 | * is_zero_ethaddr - Determine if give Ethernet address is all zeros. |
50cca8b9 MR |
773 | * @addr: Pointer to a six-byte array containing the Ethernet address |
774 | * | |
775 | * Return true if the address is all zeroes. | |
776 | */ | |
0adb5b76 | 777 | static inline int is_zero_ethaddr(const u8 *addr) |
50cca8b9 MR |
778 | { |
779 | return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]); | |
780 | } | |
781 | ||
782 | /** | |
0adb5b76 | 783 | * is_multicast_ethaddr - Determine if the Ethernet address is a multicast. |
50cca8b9 MR |
784 | * @addr: Pointer to a six-byte array containing the Ethernet address |
785 | * | |
786 | * Return true if the address is a multicast address. | |
787 | * By definition the broadcast address is also a multicast address. | |
788 | */ | |
0adb5b76 | 789 | static inline int is_multicast_ethaddr(const u8 *addr) |
50cca8b9 | 790 | { |
b28e28bb | 791 | return 0x01 & addr[0]; |
50cca8b9 MR |
792 | } |
793 | ||
23cd1385 | 794 | /* |
0adb5b76 | 795 | * is_broadcast_ethaddr - Determine if the Ethernet address is broadcast |
23cd1385 RB |
796 | * @addr: Pointer to a six-byte array containing the Ethernet address |
797 | * | |
798 | * Return true if the address is the broadcast address. | |
799 | */ | |
0adb5b76 | 800 | static inline int is_broadcast_ethaddr(const u8 *addr) |
23cd1385 | 801 | { |
b28e28bb JH |
802 | return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == |
803 | 0xff; | |
23cd1385 RB |
804 | } |
805 | ||
806 | /* | |
0adb5b76 | 807 | * is_valid_ethaddr - Determine if the given Ethernet address is valid |
75edebe3 MF |
808 | * @addr: Pointer to a six-byte array containing the Ethernet address |
809 | * | |
810 | * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not | |
811 | * a multicast address, and is not FF:FF:FF:FF:FF:FF. | |
812 | * | |
813 | * Return true if the address is valid. | |
814 | */ | |
0adb5b76 | 815 | static inline int is_valid_ethaddr(const u8 *addr) |
75edebe3 MF |
816 | { |
817 | /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to | |
818 | * explicitly check for it here. */ | |
0adb5b76 | 819 | return !is_multicast_ethaddr(addr) && !is_zero_ethaddr(addr); |
75edebe3 MF |
820 | } |
821 | ||
da384a9d | 822 | /** |
0adb5b76 | 823 | * net_random_ethaddr - Generate software assigned random Ethernet address |
da384a9d MY |
824 | * @addr: Pointer to a six-byte array containing the Ethernet address |
825 | * | |
826 | * Generate a random Ethernet address (MAC) that is not multicast | |
827 | * and has the local assigned bit set. | |
828 | */ | |
0adb5b76 | 829 | static inline void net_random_ethaddr(uchar *addr) |
da384a9d MY |
830 | { |
831 | int i; | |
12c2a310 | 832 | unsigned int seed = get_ticks(); |
da384a9d MY |
833 | |
834 | for (i = 0; i < 6; i++) | |
835 | addr[i] = rand_r(&seed); | |
836 | ||
837 | addr[0] &= 0xfe; /* clear multicast bit */ | |
838 | addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ | |
839 | } | |
840 | ||
fb8977c5 JH |
841 | /** |
842 | * string_to_enetaddr() - Parse a MAC address | |
843 | * | |
844 | * Convert a string MAC address | |
845 | * | |
846 | * Implemented in lib/net_utils.c (built unconditionally) | |
847 | * | |
848 | * @addr: MAC address in aa:bb:cc:dd:ee:ff format, where each part is a 2-digit | |
849 | * hex value | |
850 | * @enetaddr: Place to put MAC address (6 bytes) | |
851 | */ | |
852 | void string_to_enetaddr(const char *addr, uint8_t *enetaddr); | |
853 | ||
2d966958 | 854 | /* Convert an IP address to a string */ |
049a95a7 | 855 | void ip_to_string(struct in_addr x, char *s); |
2d966958 | 856 | |
8d5babb4 SG |
857 | /** |
858 | * string_to_ip() - Convert a string to ip address | |
859 | * | |
d724321f JH |
860 | * Implemented in lib/net_utils.c (built unconditionally) |
861 | * | |
862 | * @s: Input string to parse | |
863 | * @return: in_addr struct containing the parsed IP address | |
8d5babb4 | 864 | */ |
049a95a7 | 865 | struct in_addr string_to_ip(const char *s); |
73a8b27c | 866 | |
a3d991bd | 867 | /* Convert a VLAN id to a string */ |
4fd5055f | 868 | void vlan_to_string(ushort x, char *s); |
a3d991bd WD |
869 | |
870 | /* Convert a string to a vlan id */ | |
4fd5055f | 871 | ushort string_to_vlan(const char *s); |
a3d991bd | 872 | |
a3d991bd | 873 | /* read a VLAN id from an environment variable */ |
723806cc | 874 | ushort env_get_vlan(char *); |
a3d991bd | 875 | |
2d966958 | 876 | /* copy a filename (allow for "..." notation, limit length) */ |
ff997432 | 877 | void copy_filename(char *dst, const char *src, int size); |
2d966958 | 878 | |
3a66fcb7 JH |
879 | /* check if serverip is specified in filename from the command line */ |
880 | int is_serverip_in_cmd(void); | |
881 | ||
6ab12830 JH |
882 | /** |
883 | * net_parse_bootfile - Parse the bootfile env var / cmd line param | |
884 | * | |
885 | * @param ipaddr - a pointer to the ipaddr to populate if included in bootfile | |
886 | * @param filename - a pointer to the string to save the filename part | |
887 | * @param max_len - The longest - 1 that the filename part can be | |
888 | * | |
889 | * return 1 if parsed, 0 if bootfile is empty | |
890 | */ | |
891 | int net_parse_bootfile(struct in_addr *ipaddr, char *filename, int max_len); | |
892 | ||
91b469c9 | 893 | /* get a random source port */ |
ff997432 | 894 | unsigned int random_port(void); |
91b469c9 | 895 | |
c7ff5528 LM |
896 | /** |
897 | * update_tftp - Update firmware over TFTP (via DFU) | |
898 | * | |
899 | * This function updates board's firmware via TFTP | |
900 | * | |
901 | * @param addr - memory address where data is stored | |
902 | * @param interface - the DFU medium name - e.g. "mmc" | |
903 | * @param devstring - the DFU medium number - e.g. "1" | |
904 | * | |
905 | * @return - 0 on success, other value on failure | |
906 | */ | |
907 | int update_tftp(ulong addr, char *interface, char *devstring); | |
ea5427e2 | 908 | |
8d5babb4 SG |
909 | /** |
910 | * env_get_ip() - Convert an environment value to to an ip address | |
911 | * | |
912 | * @var: Environment variable to convert. The value of this variable must be | |
913 | * in the format format a.b.c.d, where each value is a decimal number from | |
914 | * 0 to 255 | |
915 | * @return IP address, or 0 if invalid | |
916 | */ | |
917 | static inline struct in_addr env_get_ip(char *var) | |
918 | { | |
919 | return string_to_ip(env_get(var)); | |
920 | } | |
5e6267af SG |
921 | |
922 | /** | |
923 | * reset_phy() - Reset the Ethernet PHY | |
924 | * | |
925 | * This should be implemented by boards if CONFIG_RESET_PHY_R is enabled | |
926 | */ | |
927 | void reset_phy(void); | |
928 | ||
2d966958 | 929 | #endif /* __NET_H__ */ |