reformatted sources, added start of bootp protocol implementation
This commit is contained in:
Markus Fröschle
@@ -100,6 +100,7 @@ CSRCS= \
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ip.c \
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ip.c \
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udp.c \
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udp.c \
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arp.c \
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arp.c \
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bootp.c \
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\
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\
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basflash.c \
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basflash.c \
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basflash_start.c
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basflash_start.c
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58
BaS_gcc/include/bootp.h
Normal file
58
BaS_gcc/include/bootp.h
Normal file
@@ -0,0 +1,58 @@
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/*
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* File: bootp.h
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* Purpose: BOOTP definitions.
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*
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* Notes:
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*/
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#ifndef _BOOTP_H_
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#define _BOOTP_H_
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/********************************************************************/
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/*
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* This data definition is defined for Ethernet only!
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*/
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typedef struct
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{
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uint8_t type; /* bootp operation type */
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uint8_t htype; /* hardware type */
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uint8_t hlen; /* hardware address length */
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uint8_t hops; /* hops */
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uint32_t xid; /* transaction identifier */
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uint16_t secs; /* seconds since trying to boot */
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uint16_t flags; /* only broadcast flag in use */
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uint32_t cl_addr; /* client ip address. Set to all 0 on request */
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uint32_t yi_addr; /* this field contains the new IP */
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uint32_t gi_addr; /* gateway address */
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uint8_t ch_addr[16]; /* client hw address */
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uint8_t sname[64]; /* server name */
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uint8_t file[128]; /* name of bootfile */
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uint8_t vend[64]; /* vendor specific (see below) */
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} bootp_frame_hdr;
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#define BOOTP_HDR_LEN sizeof(bootp_frame_hdr)
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/* possible values for type field */
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#define BOOTP_TYPE_BOOTREQUEST 1
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#define BOOTP_TYPE_BOOTREPLY 2
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/* values for hardware type - we only use ethernet */
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#define BOOTP_HTYPE_ETHERNET 1
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/* values for hlen - again only ethernet defined */
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#define BOOTP_HLEN_ETHERNET 6
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/* values for flags - only broadcast flag in use */
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#define BOOTP_FLAGS_BROADCAST 1
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#define BOOTP_TIMEOUT (1) /* Timeout in seconds */
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/* Protocol Header information */
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#define BOOTP_HDR_OFFSET ETH_HDR_LEN
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extern void bootp_request(NIF *, uint8_t *);
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extern void bootp_handler(NIF *, NBUF *);
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//extern void bootp_init(BOOTP_INFO *);
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#endif /* _BOOTP_H_ */
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@@ -1,33 +1,190 @@
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#include "bas_types.h"
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#include <stdint.h>
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#include <stdbool.h>
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static bool bootp_initialized = false;
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/*
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/*
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* bootp client state
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* File: arp.c
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* Purpose: Address Resolution Protocol routines.
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*
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* Notes:
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*/
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*/
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struct bootp_client
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#include "net.h"
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{
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#include "bootp.h"
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uint8_t state;
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#include <stdbool.h>
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uint8_t mode;
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#include <stddef.h>
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uint8_t socket_handle;
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uint16_t timer_handle;
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uint16_t boot_secs;
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};
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static struct bootp_client client;
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#define TIMER_NETWORK 0
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int bootpc_init(int mode)
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void bootp_request(NIF *nif, uint8_t *pa)
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{
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{
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if (bootp_initialized)
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/*
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* This function broadcasts a BOOTP request for the protocol
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* address "pa"
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*/
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uint8_t *addr;
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NBUF *pNbuf;
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bootp_frame_hdr *bootpframe;
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int i, result;
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pNbuf = nbuf_alloc();
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if (pNbuf == NULL)
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{
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{
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return true;
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#if defined(DEBUG_PRINT)
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xprintf("%s: arp_request couldn't allocate Tx buffer\r\n", __FUNCTION__);
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#endif
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return;
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}
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bootpframe = (bootp_frame_hdr *) &pNbuf->data[BOOTP_HDR_OFFSET];
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/* Build the BOOTP request packet */
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bootpframe->type = BOOTP_TYPE_BOOTREQUEST;
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bootpframe->htype = BOOTP_HTYPE_ETHERNET;
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bootpframe->hlen = BOOTP_HLEN_ETHERNET;
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bootpframe->hops = 0;
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bootpframe->xid = 0x1234;
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bootpframe->secs = 1;
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bootpframe->flags = BOOTP_FLAGS_BROADCAST;
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bootpframe->cl_addr = 0x0;
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bootpframe->yi_addr = 0x0;
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bootpframe->gi_addr = 0x0;
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addr = &nif->hwa[0];
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for (i = 0; i < 6; i++)
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bootpframe->ch_addr[i] = addr[i];
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pNbuf->length = BOOTP_HDR_LEN;
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/* Send the BOOTP request */
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result = nif->send(nif, nif->broadcast, nif->hwa, ETH_FRM_IP, pNbuf);
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if (result == 0)
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nbuf_free(pNbuf);
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}
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void bootp_handler(NIF *nif, NBUF *pNbuf)
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{
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/*
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* ARP protocol handler
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*/
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uint8_t *addr;
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bootp_frame_hdr *rx_bootpframe, *tx_bootpframe;
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rx_bootpframe = (bootp_frame_hdr *) &pNbuf->data[pNbuf->offset];
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#ifdef _NOT_USED_
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/*
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* Check for an appropriate ARP packet
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*/
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if ((pNbuf->length < ARP_HDR_LEN) ||
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(rx_arpframe->ar_hrd != ETHERNET) ||
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(rx_arpframe->ar_hln != 6) ||
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(rx_arpframe->ar_pro != ETH_FRM_IP) ||
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(rx_arpframe->ar_pln != 4))
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{
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nbuf_free(pNbuf);
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return;
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}
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}
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/*
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/*
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* get socket handle
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* Check to see if it was addressed to me - if it was, keep this
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* ARP entry in the table permanently; if not, mark it so that it
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* can be displaced later if necessary
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*/
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*/
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client.socket_handle = udp_getsocket
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addr = ip_get_myip(nif_get_protocol_info(nif,ETH_FRM_IP));
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if ((rx_arpframe->ar_tpa[0] == addr[0]) &&
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(rx_arpframe->ar_tpa[1] == addr[1]) &&
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(rx_arpframe->ar_tpa[2] == addr[2]) &&
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(rx_arpframe->ar_tpa[3] == addr[3]) )
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{
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longevity = ARP_ENTRY_PERM;
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}
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else
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longevity = ARP_ENTRY_TEMP;
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/*
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* Add ARP info into the table
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*/
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arp_merge(arptab,
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rx_arpframe->ar_pro,
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rx_arpframe->ar_hln,
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&rx_arpframe->ar_sha[0],
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rx_arpframe->ar_pln,
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&rx_arpframe->ar_spa[0],
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longevity
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);
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switch (rx_arpframe->opcode)
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{
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case ARP_REQUEST:
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/*
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* Check to see if request is directed to me
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*/
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if ((rx_arpframe->ar_tpa[0] == addr[0]) &&
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(rx_arpframe->ar_tpa[1] == addr[1]) &&
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(rx_arpframe->ar_tpa[2] == addr[2]) &&
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(rx_arpframe->ar_tpa[3] == addr[3]) )
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{
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/*
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* Reuse the current network buffer to assemble an ARP reply
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*/
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tx_arpframe = (arp_frame_hdr *)&pNbuf->data[ARP_HDR_OFFSET];
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/*
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* Build new ARP frame from the received data
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*/
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tx_arpframe->ar_hrd = ETHERNET;
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tx_arpframe->ar_pro = ETH_FRM_IP;
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tx_arpframe->ar_hln = 6;
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tx_arpframe->ar_pln = 4;
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tx_arpframe->opcode = ARP_REPLY;
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tx_arpframe->ar_tha[0] = rx_arpframe->ar_sha[0];
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tx_arpframe->ar_tha[1] = rx_arpframe->ar_sha[1];
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tx_arpframe->ar_tha[2] = rx_arpframe->ar_sha[2];
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tx_arpframe->ar_tha[3] = rx_arpframe->ar_sha[3];
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tx_arpframe->ar_tha[4] = rx_arpframe->ar_sha[4];
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tx_arpframe->ar_tha[5] = rx_arpframe->ar_sha[5];
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tx_arpframe->ar_tpa[0] = rx_arpframe->ar_spa[0];
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tx_arpframe->ar_tpa[1] = rx_arpframe->ar_spa[1];
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tx_arpframe->ar_tpa[2] = rx_arpframe->ar_spa[2];
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tx_arpframe->ar_tpa[3] = rx_arpframe->ar_spa[3];
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/*
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* Now copy in the new information
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*/
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addr = &nif->hwa[0];
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tx_arpframe->ar_sha[0] = addr[0];
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tx_arpframe->ar_sha[1] = addr[1];
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tx_arpframe->ar_sha[2] = addr[2];
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tx_arpframe->ar_sha[3] = addr[3];
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tx_arpframe->ar_sha[4] = addr[4];
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tx_arpframe->ar_sha[5] = addr[5];
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addr = ip_get_myip(nif_get_protocol_info(nif,ETH_FRM_IP));
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tx_arpframe->ar_spa[0] = addr[0];
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tx_arpframe->ar_spa[1] = addr[1];
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tx_arpframe->ar_spa[2] = addr[2];
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tx_arpframe->ar_spa[3] = addr[3];
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/*
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* Save the length of my packet in the buffer structure
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*/
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pNbuf->length = ARP_HDR_LEN;
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nif->send(nif,
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&tx_arpframe->ar_tha[0],
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&tx_arpframe->ar_sha[0],
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ETH_FRM_ARP,
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pNbuf);
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}
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else
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nbuf_free(pNbuf);
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break;
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case ARP_REPLY:
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/*
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* The ARP Reply case is already taken care of
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*/
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default:
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nbuf_free(pNbuf);
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break;
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}
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#endif /* _NOT_USED_ */
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return;
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}
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@@ -28,8 +28,6 @@
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#endif
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#endif
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/********************************************************************/
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FEC_EVENT_LOG fec_log[2];
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FEC_EVENT_LOG fec_log[2];
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/********************************************************************/
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/********************************************************************/
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@@ -555,9 +553,6 @@ void fec_rx_start(uint8_t ch, int8_t *rxbd)
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channel = dma_set_channel(DMA_FEC_RX(ch),
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channel = dma_set_channel(DMA_FEC_RX(ch),
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(ch == 0) ? fec0_rx_frame : fec1_rx_frame);
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(ch == 0) ? fec0_rx_frame : fec1_rx_frame);
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/*
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* Start the Rx DMA task
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*/
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/*
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/*
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* Start the Rx DMA task
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* Start the Rx DMA task
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*/
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*/
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@@ -729,6 +724,7 @@ void fec_rx_frame(uint8_t ch, NIF *nif)
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#ifdef DEBUG_PRINT
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#ifdef DEBUG_PRINT
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xprintf("nbuf_alloc() failed\n");
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xprintf("nbuf_alloc() failed\n");
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#endif
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#endif
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/*
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/*
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* Can't allocate a new network buffer, so we
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* Can't allocate a new network buffer, so we
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* have to trash the received data and reuse the buffer
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* have to trash the received data and reuse the buffer
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@@ -811,12 +807,14 @@ void fec_rx_frame(uint8_t ch, NIF *nif)
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void fec0_rx_frame(void)
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void fec0_rx_frame(void)
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{
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{
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extern NIF nif1;
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extern NIF nif1;
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fec_rx_frame(0, &nif1);
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fec_rx_frame(0, &nif1);
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}
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}
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void fec1_rx_frame(void)
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void fec1_rx_frame(void)
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{
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{
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extern NIF nif1;
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extern NIF nif1;
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fec_rx_frame(1, &nif1);
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fec_rx_frame(1, &nif1);
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}
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}
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@@ -1078,6 +1076,7 @@ int fec1_send(NIF *nif, uint8_t *dst, uint8_t *src, uint16_t type, NBUF *nbuf)
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{
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{
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return fec_send(1, nif, dst, src, type, nbuf);
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return fec_send(1, nif, dst, src, type, nbuf);
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}
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}
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/********************************************************************/
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/********************************************************************/
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/*
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/*
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* Enable interrupts on the selected FEC
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* Enable interrupts on the selected FEC
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@@ -1387,5 +1386,4 @@ void fec_eth_stop(uint8_t ch)
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*/
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*/
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set_ipl(level);
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set_ipl(level);
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}
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}
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/********************************************************************/
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