uboot arp地址解析
common/cmd_cache.c
int do_getmac(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
//usend d43d7e45371c 192.168.1.134 1234 1234 hhaa
char ethsrc[6]={0xff ,0xff ,0xff ,0xff ,0xff, 0xff};
char ethdst[6]={0xff ,0xff ,0xff ,0xff ,0xff, 0xff};
_getmac(argv[3],ethsrc);
getmacfromipaddress(argv[1],ethdst,argv[2],ethsrc);
//printf("%s mac is %x %x %x %x %x %x\n",argv[1],eth[0],eth[1],eth[2],eth[3],eth[4],eth[5]);
return 0;
}
U_BOOT_CMD (getmac, 6, 1, do_getmac,
"getmac destip srcip srceth",
"[operation type] [device number] [image address] [image size]\n"
);common/tftp.cint global_raw_reveive = 0;
void getmacfromipaddress(const char* remoteip, char* remoteeth,const char* ourip,char* oureth)
{
/* and do the ARP request */
IPaddr_t RemoteIP;
IPaddr_t MyIP;
RemoteIP= string_to_ip(remoteip);
MyIP = string_to_ip(ourip);
ArpRequestsend(RemoteIP,oureth,MyIP);
global_raw_reveive = 1;
eth_rx();
global_raw_reveive = 0;
// NetRxPacket = inpkt;
// NetRxPacketLen = len;
//printbuffer((unsigned char*)NetRxPacket,NetRxPacketLen);
//_printarp((unsigned char*)NetRxPacket,NetRxPacketLen);
return 1; /* waiting */
}net/net.c
void ArpRequestsend(IPaddr_t remoteip,char* oureth,IPaddr_t ourip)
{
int i;
volatile uchar *pkt;
ARP_t *arp;
pkt = NetTxPacket;
pkt += NetSetEther(pkt, NetBcastAddr, PROT_ARP);
arp = (ARP_t *) pkt;
arp->ar_hrd = htons(ARP_ETHER);
arp->ar_pro = htons(PROT_IP);
arp->ar_hln = 6;
arp->ar_pln = 4;
arp->ar_op = htons(ARPOP_REQUEST);
/* source ET addr */
memcpy(&arp->ar_data[0], oureth, 6);
/* source IP addr */
NetWriteIP((uchar *) &arp->ar_data[6], ourip);
for (i = 10; i < 16; ++i) {
/* dest ET addr = 0 */
arp->ar_data[i] = 0;
}
NetWriteIP((uchar *) &arp->ar_data[16], remoteip);
(void) eth_send(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
}void
NetReceive(volatile uchar *inpkt, int len)
{
Ethernet_t *et;
IP_t *ip;
ARP_t *arp;
IPaddr_t tmp;
IPaddr_t src_ip;
int x;
uchar *pkt;
#if defined(CONFIG_CMD_CDP)
int iscdp;
#endif
ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
debug("packet received.%d\n", len);
NetRxPacket = inpkt;
NetRxPacketLen = len;
et = (Ethernet_t *)inpkt;
<span style="color:#FF0000;">if(global_raw_reveive){
//global_raw_reveive=0;
printpacket((Ethernet_t *)NetRxPacket,len);
return;
}</span>driver/net/cpsw.c
void printbuffer(unsigned char* buffer, int len)
{
int i;
for(i=0;i<len;i++){
printf("%2.2x ",buffer[i]);
if((i&15)==15)printf("\n");
}
printf("\n");
}
#define printhex(a,b) printf(#b##"=%x\n",a->b);
void printarp(ARP_t * arp,int len)
{
// ushort ar_hrd; /* Format of hardware address */
// ushort ar_pro; /* Format of protocol address */
// uchar ar_hln; /* Length of hardware address */
// uchar ar_pln; /* Length of protocol address */
// ushort ar_op; /* Operation */
// uchar ar_data[0];
printf("ar_hrd %x\n",arp->ar_hrd);
printf("ar_pro %x\n",arp->ar_pro);
printf("ar_hln %x\n",arp->ar_hln);
printf("ar_pln %x\n",arp->ar_pln);
printf("ar_op %x\n",arp->ar_op);
printf("mac_src %.2x%.2x%.2x%.2x%.2x%.2x\n",arp->ar_data[0],arp->ar_data[1],arp->ar_data[2],arp->ar_data[3],arp->ar_data[4],arp->ar_data[5]);
printf("ip_src %d %d %d %d\n",arp->ar_data[6],arp->ar_data[7],arp->ar_data[8],arp->ar_data[9]);
printf("mac_dst %.2x%.2x%.2x%.2x%.2x%.2x\n",arp->ar_data[10],arp->ar_data[11],arp->ar_data[12],arp->ar_data[13],arp->ar_data[14],arp->ar_data[15]);
printf("ip_dst %d.%d.%d.%d\n",arp->ar_data[16],arp->ar_data[17],arp->ar_data[18],arp->ar_data[19]);
}
int printpacket(char* packet,int len)
{
// typedef struct {
// uchar et_dest[6]; /* Destination node */
// uchar et_src[6]; /* Source node */
// ushort et_protlen; /* Protocol or length */
// uchar et_dsap; /* 802 DSAP */
// uchar et_ssap; /* 802 SSAP */
// uchar et_ctl; /* 802 control */
// uchar et_snap1; /* SNAP */
// uchar et_snap2;
// uchar et_snap3;
// ushort et_prot; /* 802 protocol */
// } Ethernet_t;
Ethernet_t* eth =(Ethernet_t* )packet;
//printbuffer((unsigned char*)packet,len);
printf("\net_dest %.2x%.2x%.2x%.2x%.2x%.2x\n", eth->et_dest[0],eth->et_dest[1],eth->et_dest[2],eth->et_dest[3],eth->et_dest[4],eth->et_dest[5]);
printf("et_src %.2x%.2x%.2x%.2x%.2x%.2x\n", eth->et_src[0],eth->et_src[1],eth->et_src[2],eth->et_src[3],eth->et_src[4],eth->et_src[5]);
if(isnotvlan()){
printf("et_protlen %x",eth->et_protlen);
printf("et_dsap %x\n",eth->et_dsap);
printf("et_ssap %x\n",eth->et_ssap);
printf("et_ctl %x\n",eth->et_ctl);
printf("et_snap1 %x\n",eth->et_snap1);
switch(eth->et_protlen){
case 0x608:
printf("PROT_ARP");
printarp((ARP_t * )((unsigned char*)eth+ETHER_HDR_SIZE),len-ETHER_HDR_SIZE);
break;
case 0x8:
printf("PROT_IP");
//printip((IP_t * )((unsigned char*)eth+ETHER_HDR_SIZE),len-ETHER_HDR_SIZE);
break;
case 0x3680:
printf("PROT_RARP");
printarp((ARP_t * )((unsigned char*)eth+ETHER_HDR_SIZE),len-ETHER_HDR_SIZE);
break;
case 0x81:
printf("PROT_VLAN");
break;
}
printf("\n");
}else{
VLAN_Ethernet_t *veth = (VLAN_Ethernet_t *)eth;
// uchar vet_dest[6]; /* Destination node */
// uchar vet_src[6]; /* Source node */
// ushort vet_vlan_type; /* PROT_VLAN */
// ushort vet_tag; /* TAG of VLAN */
// ushort vet_type; /* protocol type */
printf("vet_vlan_type %x\n",veth->vet_vlan_type);
printf("vet_tag %x\n",veth->vet_tag);
printf("vet_type %x\n",veth->vet_type);
return VLAN_ETHER_HDR_SIZE;
}
}
void printip(IP_t* ip,int len)
{
// typedef struct {
// uchar ip_hl_v; /* header length and version */
// uchar ip_tos; /* type of service */
// ushort ip_len; /* total length */
// ushort ip_id; /* identification */
// ushort ip_off; /* fragment offset field */
// uchar ip_ttl; /* time to live */
// uchar ip_p; /* protocol */
// ushort ip_sum; /* checksum */
// IPaddr_t ip_src; /* Source IP address */
// IPaddr_t ip_dst; /* Destination IP address */
// ushort udp_src; /* UDP source port */
// ushort udp_dst; /* UDP destination port */
// ushort udp_len; /* Length of UDP packet */
// ushort udp_xsum; /* Checksum */
// } IP_t;
printf("ip_hl_v %x\n",ip->ip_hl_v);
printf("ip_tos %x\n",ip->ip_tos);
printf("ip_len %x\n",ip->ip_len);
printf("ip_id %x\n",ip->ip_id);
printf("ip_off %x\n",ip->ip_off);
printf("ip_ttl %x\n",ip->ip_ttl);
printf("ip_p %x\n",ip->ip_p);
printf("ip_sum %x\n",ip->ip_sum);
if(17==ip->ip_p){
unsigned char* p1;
printf("UDP\n");
printf("udp_src %x\n",ip->udp_src);
printf("udp_dst %x\n",ip->udp_dst);
printf("udp_len %x\n",ip->udp_len);
printf("udp_xsum %x\n",ip->udp_xsum);
p1 = (unsigned char*)&ip->ip_src;
printf("ip_src %d %d %d %d\n",p1[0],p1[1],p1[2],p1[3]);
p1 = (unsigned char*)&ip->ip_dst;
printf("ip_dst %d %d %d %d\n",p1[0],p1[1],p1[2],p1[3]);
}else if(1==ip->ip_p){
printf("ICMP\n");
}
}static int cpsw_send(struct eth_device *dev, volatile void *packet, int length)
{
struct cpsw_priv *priv = dev->priv;
void *buffer;
int len;
int status;
int i;
<span style="color:#FF0000;">unsigned char* p=(unsigned char*)packet;
//Ethernet_t *et = (Ethernet_t *)p;
//IP_t *ip = (IP_t *)(p+ETHER_HDR_SIZE);
printf("cpsw_send: length=%x\n",length);
//00 0c 29 6a 86 4e
// p[0]=0;
// p[1]=0xc;
// p[2]=0x29;
// p[3]=0x6a;
// p[4]=0x86;
// p[5]=0x4e;
printpacket(packet,length);
printf("beging send ...\n");</span>
