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/*
 *      LiMon Monitor (LiMon) - Network.
 *
 *      Copyright 1994 - 2000 Neil Russell.
 *      (See License)
 *
 *
 * History
 *      9/16/00   bor  adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
 */
 
#ifndef __NET_H__
#define __NET_H__
 
 
// TFTP running checksum defined here... tftp.h not in common include/ path
extern unsigned long TFTP_CHKSUM;
 
/*
 *      The number of receive packet buffers, and the required packet buffer
 *      alignment in memory.
 *
 */
 
#define PKTBUFSRX       4
#define PKTALIGN        32
 
/****** from cpu_arch.h ************/
 
/* Byte swapping stuff (not needed on PPC). */
 
#define SWAP16(x)       (x)
#define SWAP16c(x)      (x)
#define SWAP32(x)       (x)
 
/****** end from cpu_arch.h **************/
 
typedef unsigned long           IPaddr_t;
 
 
 
/*
 * The current receive packet handler.  Called with a pointer to the
 * application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
 * All other packets are dealt with without calling the handler.
 */
typedef void    rxhand_f(unsigned char *, unsigned, unsigned, unsigned);
 
/*
 *      A timeout handler.  Called after time interval has expired.
 */
typedef void    thand_f(void);
 
#ifdef CONFIG_NET_MULTI
 
#define NAMESIZE 16
 
enum eth_state_t {
        ETH_STATE_INIT,
        ETH_STATE_PASSIVE,
        ETH_STATE_ACTIVE
};
 
struct eth_device {
        char name[NAMESIZE];
        unsigned char enetaddr[6];
        int iobase;
        int state;
 
        int  (*init) (struct eth_device*, bd_t*);
        int  (*send) (struct eth_device*, volatile void* pachet, int length);
        int  (*recv) (struct eth_device*);
        void (*halt) (struct eth_device*);
 
        struct eth_device *next;
        void *priv;
};
 
extern int eth_initialize(bd_t *bis);           /* Initialize network subsystem */
extern int eth_register(struct eth_device* dev);/* Register network device      */
extern void eth_try_another(void);              /* Change the device            */
#endif
 
/**********************************************************************/
/*
 *      Protocol headers.
 */
 
/*
 *      Ethernet header
 */
typedef struct {
        unsigned char           et_dest[6];     /* Destination node             */
        unsigned char           et_src[6];      /* Source node                  */
        unsigned short          et_protlen;     /* Protocol or length           */
        unsigned char           et_dsap;        /* 802 DSAP                     */
        unsigned char           et_ssap;        /* 802 SSAP                     */
        unsigned char           et_ctl;         /* 802 control                  */
        unsigned char           et_snap1;       /* SNAP                         */
        unsigned char           et_snap2;
        unsigned char           et_snap3;
        unsigned short          et_prot;        /* 802 protocol                 */
} Ethernet_t;
 
#define ETHER_HDR_SIZE  14              /* Ethernet header size         */
#define E802_HDR_SIZE   22              /* 802 ethernet header size     */
#define PROT_IP         0x0800          /* IP protocol                  */
#define PROT_ARP        0x0806          /* IP ARP protocol              */
#define PROT_RARP       0x8035          /* IP ARP protocol              */
 
#define IPPROTO_ICMP     1      /* Internet Control Message Protocol    */
#define IPPROTO_UDP     17      /* User Datagram Protocol               */
 
/*
 *      Internet Protocol (IP) header.
 */
typedef struct {
        unsigned char           ip_hl_v;        /* header length and version    */
        unsigned char           ip_tos;         /* type of service              */
        unsigned short          ip_len;         /* total length                 */
        unsigned short          ip_id;          /* identification               */
        unsigned short          ip_off;         /* fragment offset field        */
        unsigned char           ip_ttl;         /* time to live                 */
        unsigned char           ip_p;           /* protocol                     */
        unsigned short          ip_sum;         /* checksum                     */
        IPaddr_t        ip_src;         /* Source IP address            */
        IPaddr_t        ip_dst;         /* Destination IP address       */
        unsigned short          udp_src;        /* UDP source port              */
        unsigned short          udp_dst;        /* UDP destination port         */
        unsigned short          udp_len;        /* Length of UDP packet         */
        unsigned short          udp_xsum;       /* Checksum                     */
} IP_t;
 
#define IP_HDR_SIZE_NO_UDP      (sizeof (IP_t) - 8)
#define IP_HDR_SIZE             (sizeof (IP_t))
 
 
/*
 *      Address Resolution Protocol (ARP) header.
 */
typedef struct
{
        unsigned short          ar_hrd;         /* Format of hardware address*/
#   define ARP_ETHER        1                   /* Ethernet  hardware address*/
        unsigned short          ar_pro;         /* Format of protocol address*/
        unsigned char           ar_hln;         /* Length of hardware address*/
        unsigned char           ar_pln;         /* Length of protocol address*/
        unsigned short          ar_op;          /* Operation            */
#   define ARPOP_REQUEST    1           /* Request  to resolve  address */
#   define ARPOP_REPLY      2           /* Response to previous request */
 
#   define RARPOP_REQUEST   3           /* Request  to resolve  address */
#   define RARPOP_REPLY     4           /* Response to previous request */
 
        /*
         * The remaining fields are variable in size, according to
         * the sizes above, and are defined as appropriate for
         * specific hardware/protocol combinations.
         */
        unsigned char           ar_data[0];
#if 0
        unsigned char           ar_sha[];       /* Sender hardware address*/
        unsigned char           ar_spa[];       /* Sender protocol address*/
        unsigned char           ar_tha[];       /* Target hardware address*/
        unsigned char           ar_tpa[];       /* Target protocol address*/
#endif /* 0 */
} ARP_t;
 
#define ARP_HDR_SIZE    (8+20)          /* Size assuming ethernet       */
 
/*
 * ICMP stuff (just enough to handle (host) redirect messages)
 */
#define ICMP_REDIRECT           5       /* Redirect (change route)      */
 
/* Codes for REDIRECT. */
#define ICMP_REDIR_NET          0        /* Redirect Net                 */
#define ICMP_REDIR_HOST         1       /* Redirect Host                */
 
typedef struct icmphdr {
        unsigned char           type;
        unsigned char           code;
        unsigned short          checksum;
        union {
                struct {
                        unsigned short  id;
                        unsigned short  sequence;
                } echo;
                unsigned long   gateway;
                struct {
                        unsigned short  __unused;
                        unsigned short  mtu;
                } frag;
        } un;
} ICMP_t;
 
 
 
/*
 * Maximum packet size; used to allocate packet storage.
 * TFTP packets can be 524 bytes + IP header + ethernet header.
 * Lets be conservative, and go for 38 * 16.  (Must also be
 * a multiple of 32 bytes).
 */
/*
 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
 * traffic type is not always controlled
 * maximum packet size =  1518
 * maximum packet size and multiple of 32 bytes =  1536
 */
#define PKTSIZE                 1518
#define PKTSIZE_ALIGN           1536
/*#define PKTSIZE               608*/
 
/*
 * Maximum receive ring size; that is, the number of packets
 * we can buffer before overflow happens. Basically, this just
 * needs to be enough to prevent a packet being discarded while
 * we are processing the previous one.
 */
#define RINGSZ          4
#define RINGSZ_LOG2     2
 
/**********************************************************************/
/*
 *      Globals.
 */
 
/* net.c */
/** BOOTP EXTENTIONS **/
extern IPaddr_t         NetOurGatewayIP;        /* Our gateway IP addresse      */
extern IPaddr_t         NetOurSubnetMask;       /* Our subnet mask (0 = unknown)*/
extern IPaddr_t         NetOurDNSIP;     /* Our Domain Name Server (0 = unknown)*/
extern char             NetOurNISDomain[32];    /* Our NIS domain               */
extern char             NetOurHostName[32];     /* Our hostname                 */
extern char             NetOurRootPath[64];     /* Our root path                */
extern unsigned short           NetBootFileSize;        /* Our boot file size in blocks */
/** END OF BOOTP EXTENTIONS **/
extern unsigned long            NetBootFileXferSize;    /* size of bootfile in bytes    */
extern unsigned char            NetOurEther[6];         /* Our ethernet address         */
extern unsigned char            NetServerEther[6];      /* Boot server enet address     */
extern IPaddr_t         NetOurIP;               /* Our    IP addr (0 = unknown) */
extern IPaddr_t         NetServerIP;            /* Server IP addr (0 = unknown) */
extern volatile unsigned char * NetTxPacket;            /* THE transmit packet          */
extern volatile unsigned char * NetRxPackets[PKTBUFSRX];/* Receive packets              */
extern volatile unsigned char * NetRxPkt;               /* Current receive packet       */
extern int              NetRxPktLen;            /* Current rx packet length     */
extern unsigned         NetIPID;                /* IP ID (counting)             */
extern unsigned char            NetBcastAddr[6];        /* Ethernet boardcast address   */
 
extern int              NetState;               /* Network loop state           */
#define NETLOOP_CONTINUE        1
#define NETLOOP_RESTART         2
#define NETLOOP_SUCCESS         3
#define NETLOOP_FAIL            4
 
 
typedef enum { BOOTP, RARP, ARP, TFTP, DHCP } proto_t;
 
/* from net/net.c */
extern char     BootFile[128];                  /* Boot File name               */
 
/* Initialize the network adapter */
extern int      NetLoop(proto_t protocol);
 
/* Shutdown adapters and cleanup */
extern void     NetStop(void);
 
/* Load failed.  Start again. */
extern void     NetStartAgain(void);
 
/* Copy ethernet address */
extern void     NetCopyEther(volatile unsigned char *, unsigned char *);
 
/* Set ethernet header */
extern void     NetSetEther(volatile unsigned char *, unsigned char *, unsigned long);
 
/* Set IP header */
extern void     NetSetIP(volatile unsigned char *, IPaddr_t, int, int, int);
 
/* Checksum */
extern int      NetCksumOk(unsigned char *, int);       /* Return true if cksum OK      */
extern unsigned NetCksum(unsigned char *, int);         /* Calculate the checksum       */
 
/* Set callbacks */
extern void     NetSetHandler(rxhand_f *);      /* Set RX packet handler        */
extern void     NetSetTimeout(int, thand_f *);  /* Set timeout handler          */
 
/* Transmit "NetTxPacket" */
extern void     NetSendPacket(volatile unsigned char *, int);
 
/* Processes a received packet */
extern void     NetReceive(volatile unsigned char *, int);
 
/* Print an IP address on the console */
extern void     print_IPaddr (IPaddr_t);
 
/* Convert an IP address to a string */
extern void     ip_to_string (IPaddr_t x, char *s);
 
/* read an IP address from a environment variable */
extern IPaddr_t getenv_IPaddr (char *);
 
/* copy a filename (allow for "..." notation, limit length) */
extern void     copy_filename (unsigned char *dst, unsigned char *src, int size);
 
/* converts IP from unsigned long to string */
extern char         *inet_ntoa(unsigned long);
extern unsigned long inet_aton(const char *);
 
/**********************************************************************/
 
#endif /* __NET_H__ */

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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [include/] [net.h] - Blame information for rev 435

Line No.	Rev	Author	Line
1	2	marcus.erl	`/*`
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
15
16	140	julius	`// TFTP running checksum defined here... tftp.h not in common include/ path`
17			`extern unsigned long TFTP_CHKSUM;`
18
19	2	marcus.erl	`/*`
20			`* The number of receive packet buffers, and the required packet buffer`
21			`* alignment in memory.`
22			`*`
23			`*/`
24
25			`#define PKTBUFSRX 4`
26			`#define PKTALIGN 32`
27
28			`/**** from cpu_arch.h **********/`
29
30			`/* Byte swapping stuff (not needed on PPC). */`
31
32			`#define SWAP16(x) (x)`
33			`#define SWAP16c(x) (x)`
34			`#define SWAP32(x) (x)`
35
36			`/**** end from cpu_arch.h ************/`
37
38			`typedef unsigned long IPaddr_t;`
39
40
41
42			`/*`
43			`* The current receive packet handler. Called with a pointer to the`
44			`* application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).`
45			`* All other packets are dealt with without calling the handler.`
46			`*/`
47			`typedef void rxhand_f(unsigned char *, unsigned, unsigned, unsigned);`
48
49			`/*`
50			`* A timeout handler. Called after time interval has expired.`
51			`*/`
52			`typedef void thand_f(void);`
53
54			`#ifdef CONFIG_NET_MULTI`
55
56			`#define NAMESIZE 16`
57
58			`enum eth_state_t {`
59			`ETH_STATE_INIT,`
60			`ETH_STATE_PASSIVE,`
61			`ETH_STATE_ACTIVE`
62			`};`
63
64			`struct eth_device {`
65			`char name[NAMESIZE];`
66			`unsigned char enetaddr[6];`
67			`int iobase;`
68			`int state;`
69
70			`int (init) (struct eth_device, bd_t*);`
71			`int (send) (struct eth_device, volatile void* pachet, int length);`
72			`int (recv) (struct eth_device);`
73			`void (halt) (struct eth_device);`
74
75			`struct eth_device *next;`
76			`void *priv;`
77			`};`
78
79			`extern int eth_initialize(bd_t bis); / Initialize network subsystem */`
80			`extern int eth_register(struct eth_device* dev);/* Register network device */`
81			`extern void eth_try_another(void); /* Change the device */`
82			`#endif`
83
84			`/**********************************************************************/`
85			`/*`
86			`* Protocol headers.`
87			`*/`
88
89			`/*`
90			`* Ethernet header`
91			`*/`
92			`typedef struct {`
93			`unsigned char et_dest[6]; /* Destination node */`
94			`unsigned char et_src[6]; /* Source node */`
95			`unsigned short et_protlen; /* Protocol or length */`
96			`unsigned char et_dsap; /* 802 DSAP */`
97			`unsigned char et_ssap; /* 802 SSAP */`
98			`unsigned char et_ctl; /* 802 control */`
99			`unsigned char et_snap1; /* SNAP */`
100			`unsigned char et_snap2;`
101			`unsigned char et_snap3;`
102			`unsigned short et_prot; /* 802 protocol */`
103			`} Ethernet_t;`
104
105			`#define ETHER_HDR_SIZE 14 /* Ethernet header size */`
106			`#define E802_HDR_SIZE 22 /* 802 ethernet header size */`
107			`#define PROT_IP 0x0800 /* IP protocol */`
108			`#define PROT_ARP 0x0806 /* IP ARP protocol */`
109			`#define PROT_RARP 0x8035 /* IP ARP protocol */`
110
111			`#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */`
112			`#define IPPROTO_UDP 17 /* User Datagram Protocol */`
113
114			`/*`
115			`* Internet Protocol (IP) header.`
116			`*/`
117			`typedef struct {`
118			`unsigned char ip_hl_v; /* header length and version */`
119			`unsigned char ip_tos; /* type of service */`
120			`unsigned short ip_len; /* total length */`
121			`unsigned short ip_id; /* identification */`
122			`unsigned short ip_off; /* fragment offset field */`
123			`unsigned char ip_ttl; /* time to live */`
124			`unsigned char ip_p; /* protocol */`
125			`unsigned short ip_sum; /* checksum */`
126			`IPaddr_t ip_src; /* Source IP address */`
127			`IPaddr_t ip_dst; /* Destination IP address */`
128			`unsigned short udp_src; /* UDP source port */`
129			`unsigned short udp_dst; /* UDP destination port */`
130			`unsigned short udp_len; /* Length of UDP packet */`
131			`unsigned short udp_xsum; /* Checksum */`
132			`} IP_t;`
133
134			`#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)`
135			`#define IP_HDR_SIZE (sizeof (IP_t))`
136
137
138			`/*`
139			`* Address Resolution Protocol (ARP) header.`
140			`*/`
141			`typedef struct`
142			`{`
143	140	julius	`unsigned short ar_hrd; /* Format of hardware address*/`
144			`# define ARP_ETHER 1 /* Ethernet hardware address*/`
145			`unsigned short ar_pro; /* Format of protocol address*/`
146			`unsigned char ar_hln; /* Length of hardware address*/`
147			`unsigned char ar_pln; /* Length of protocol address*/`
148			`unsigned short ar_op; /* Operation */`
149	2	marcus.erl	`# define ARPOP_REQUEST 1 /* Request to resolve address */`
150			`# define ARPOP_REPLY 2 /* Response to previous request */`
151
152			`# define RARPOP_REQUEST 3 /* Request to resolve address */`
153			`# define RARPOP_REPLY 4 /* Response to previous request */`
154
155			`/*`
156			`* The remaining fields are variable in size, according to`
157			`* the sizes above, and are defined as appropriate for`
158			`* specific hardware/protocol combinations.`
159			`*/`
160			`unsigned char ar_data[0];`
161			`#if 0`
162	140	julius	`unsigned char ar_sha[]; /* Sender hardware address*/`
163			`unsigned char ar_spa[]; /* Sender protocol address*/`
164			`unsigned char ar_tha[]; /* Target hardware address*/`
165			`unsigned char ar_tpa[]; /* Target protocol address*/`
166	2	marcus.erl	`#endif /* 0 */`
167			`} ARP_t;`
168
169			`#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */`
170
171			`/*`
172			`* ICMP stuff (just enough to handle (host) redirect messages)`
173			`*/`
174			`#define ICMP_REDIRECT 5 /* Redirect (change route) */`
175
176			`/* Codes for REDIRECT. */`
177			`#define ICMP_REDIR_NET 0 /* Redirect Net */`
178			`#define ICMP_REDIR_HOST 1 /* Redirect Host */`
179
180			`typedef struct icmphdr {`
181			`unsigned char type;`
182			`unsigned char code;`
183			`unsigned short checksum;`
184			`union {`
185			`struct {`
186			`unsigned short id;`
187			`unsigned short sequence;`
188			`} echo;`
189			`unsigned long gateway;`
190			`struct {`
191			`unsigned short __unused;`
192			`unsigned short mtu;`
193			`} frag;`
194			`} un;`
195			`} ICMP_t;`
196
197
198
199			`/*`
200			`* Maximum packet size; used to allocate packet storage.`
201			`* TFTP packets can be 524 bytes + IP header + ethernet header.`
202			`* Lets be conservative, and go for 38 * 16. (Must also be`
203			`* a multiple of 32 bytes).`
204			`*/`
205			`/*`
206			`* AS.HARNOIS : Better to set PKTSIZE to maximum size because`
207			`* traffic type is not always controlled`
208			`* maximum packet size = 1518`
209			`* maximum packet size and multiple of 32 bytes = 1536`
210			`*/`
211			`#define PKTSIZE 1518`
212			`#define PKTSIZE_ALIGN 1536`
213			`/#define PKTSIZE 608/`
214
215			`/*`
216			`* Maximum receive ring size; that is, the number of packets`
217			`* we can buffer before overflow happens. Basically, this just`
218			`* needs to be enough to prevent a packet being discarded while`
219			`* we are processing the previous one.`
220			`*/`
221			`#define RINGSZ 4`
222			`#define RINGSZ_LOG2 2`
223
224			`/**********************************************************************/`
225			`/*`
226			`* Globals.`
227			`*/`
228
229			`/* net.c */`
230			`/ BOOTP EXTENTIONS /`
231			`extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */`
232			`extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/`
233			`extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/`
234			`extern char NetOurNISDomain[32]; /* Our NIS domain */`
235			`extern char NetOurHostName[32]; /* Our hostname */`
236			`extern char NetOurRootPath[64]; /* Our root path */`
237			`extern unsigned short NetBootFileSize; /* Our boot file size in blocks */`
238			`/ END OF BOOTP EXTENTIONS /`
239			`extern unsigned long NetBootFileXferSize; /* size of bootfile in bytes */`
240			`extern unsigned char NetOurEther[6]; /* Our ethernet address */`
241			`extern unsigned char NetServerEther[6]; /* Boot server enet address */`
242			`extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */`
243			`extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */`
244	140	julius	`extern volatile unsigned char * NetTxPacket; /* THE transmit packet */`
245	2	marcus.erl	`extern volatile unsigned char * NetRxPackets[PKTBUFSRX];/* Receive packets */`
246			`extern volatile unsigned char * NetRxPkt; /* Current receive packet */`
247			`extern int NetRxPktLen; /* Current rx packet length */`
248			`extern unsigned NetIPID; /* IP ID (counting) */`
249			`extern unsigned char NetBcastAddr[6]; /* Ethernet boardcast address */`
250
251			`extern int NetState; /* Network loop state */`
252			`#define NETLOOP_CONTINUE 1`
253			`#define NETLOOP_RESTART 2`
254			`#define NETLOOP_SUCCESS 3`
255			`#define NETLOOP_FAIL 4`
256
257
258			`typedef enum { BOOTP, RARP, ARP, TFTP, DHCP } proto_t;`
259
260			`/* from net/net.c */`
261			`extern char BootFile[128]; /* Boot File name */`
262
263			`/* Initialize the network adapter */`
264			`extern int NetLoop(proto_t protocol);`
265
266			`/* Shutdown adapters and cleanup */`
267			`extern void NetStop(void);`
268
269			`/* Load failed. Start again. */`
270			`extern void NetStartAgain(void);`
271
272			`/* Copy ethernet address */`
273			`extern void NetCopyEther(volatile unsigned char , unsigned char );`
274
275			`/* Set ethernet header */`
276			`extern void NetSetEther(volatile unsigned char , unsigned char , unsigned long);`
277
278			`/* Set IP header */`
279			`extern void NetSetIP(volatile unsigned char *, IPaddr_t, int, int, int);`
280
281			`/* Checksum */`
282			`extern int NetCksumOk(unsigned char , int); / Return true if cksum OK */`
283			`extern unsigned NetCksum(unsigned char , int); / Calculate the checksum */`
284
285			`/* Set callbacks */`
286			`extern void NetSetHandler(rxhand_f ); / Set RX packet handler */`
287			`extern void NetSetTimeout(int, thand_f ); / Set timeout handler */`
288
289			`/* Transmit "NetTxPacket" */`
290			`extern void NetSendPacket(volatile unsigned char *, int);`
291
292			`/* Processes a received packet */`
293			`extern void NetReceive(volatile unsigned char *, int);`
294
295			`/* Print an IP address on the console */`
296			`extern void print_IPaddr (IPaddr_t);`
297
298			`/* Convert an IP address to a string */`
299			`extern void ip_to_string (IPaddr_t x, char *s);`
300
301			`/* read an IP address from a environment variable */`
302			`extern IPaddr_t getenv_IPaddr (char *);`
303
304			`/* copy a filename (allow for "..." notation, limit length) */`
305			`extern void copy_filename (unsigned char dst, unsigned char src, int size);`
306
307			`/* converts IP from unsigned long to string */`
308			`extern char *inet_ntoa(unsigned long);`
309			`extern unsigned long inet_aton(const char *);`
310
311			`/**********************************************************************/`
312
313			`#endif /* __NET_H__ */`