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- fixed Eth_pkt_send()

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- dhcp: don't send padding bytes for whole options

git-svn-id: http://moon:8086/svn/mips@211 a8ebac50-d88d-4704-bea3-6648445a41b3
This commit is contained in:
jens
2021-11-24 11:18:53 +00:00
parent 888c71bf72
commit 9c248bd884
3 changed files with 64 additions and 63 deletions
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src/common/network/dhcp.c
+47 -49
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@@ -11,20 +11,20 @@
#include "udp.h"
#include "dhcp.h"
#define WITH_CLIENT_ID 1
const char hostname[] = "ML-402";
// -------------------------------------------------------------------------
// Testing
void DHCP_request_send(packet_t *pPacket, uint32_t dhcp_msg_type, uint8_t *mac_addr_src, uint8_t *inet_addr_src, uint8_t *inet_addr_dst, DHCP *pLast)
{
uint16_t sum;
DHCP *pDHCP;
uint8_t *pData;
DHCP dhcp;
dhcp_opt_hdr_t *pOpt_hdr;
uint32_t size, pos, magic = 0x63825363;
pDHCP = (DHCP*)UDP_create(pPacket, inet_addr_src, 68, inet_addr_dst, 67, NULL, sizeof(DHCP));
uint32_t size;
uint32_t magic = 0x63825363;
uint32_t option_size;
DHCP *pDHCP = &dhcp;
memset(pDHCP, 0, sizeof(DHCP));
@@ -43,49 +43,50 @@ void DHCP_request_send(packet_t *pPacket, uint32_t dhcp_msg_type, uint8_t *mac_a
pDHCP->xid = (uint32_t)rand();
// Options
pos = 0;
option_size = 0;
size = sizeof(magic);
memset(&pDHCP->options[pos], 0xAA, sizeof(pDHCP->options));
memcpy(&pDHCP->options[pos], &magic, size);
pos += size;
memcpy(&pDHCP->options[option_size], &magic, size);
option_size += size;
// Set msg type
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_MSGTYPE;
pOpt_hdr->len = 1;
pos += size;
option_size += size;
size = pOpt_hdr->len;
pDHCP->options[pos] = dhcp_msg_type;
pos += size;
pDHCP->options[option_size] = dhcp_msg_type;
option_size += size;
#ifdef WITH_CLIENT_ID
// Set client ID
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_CLIENTID;
pOpt_hdr->len = 6;
pos += size;
option_size += size;
size = pOpt_hdr->len;
memcpy(&pDHCP->options[pos], mac_addr_src, size);
pos += size;
memcpy(&pDHCP->options[option_size], mac_addr_src, size);
option_size += size;
#endif
// Set client name
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_HOSTNAME;
pOpt_hdr->len = strlen(hostname);
pos += size;
option_size += size;
size = pOpt_hdr->len;
memcpy(&pDHCP->options[pos], hostname, size);
pos += size;
memcpy(&pDHCP->options[option_size], hostname, size);
option_size += size;
pDHCP->options[pos] = DHCP_OPT_END;
pDHCP->options[option_size] = DHCP_OPT_END;
option_size++;
break;
case DHCP_MSG_DHCPREQUEST:
@@ -93,67 +94,64 @@ void DHCP_request_send(packet_t *pPacket, uint32_t dhcp_msg_type, uint8_t *mac_a
pDHCP->xid = pLast->xid;
// Options
pos = 0;
option_size = 0;
size = sizeof(magic);
memcpy(&pDHCP->options[pos], &magic, size);
pos += size;
memcpy(&pDHCP->options[option_size], &magic, size);
option_size += size;
// Set msg type
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_MSGTYPE;
pOpt_hdr->len = 1;
pos += size;
option_size += size;
size = pOpt_hdr->len;
pDHCP->options[pos] = dhcp_msg_type;
pos += size;
pDHCP->options[option_size] = dhcp_msg_type;
option_size += size;
#ifdef WITH_CLIENT_ID
// Set client ID
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_CLIENTID;
pOpt_hdr->len = 6;
pos += size;
option_size += size;
size = pOpt_hdr->len;
memcpy(&pDHCP->options[pos], mac_addr_src, size);
pos += size;
memcpy(&pDHCP->options[option_size], mac_addr_src, size);
option_size += size;
#endif
// Set client name
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_HOSTNAME;
pOpt_hdr->len = strlen(hostname);
pos += size;
option_size += size;
size = pOpt_hdr->len;
memcpy(&pDHCP->options[pos], hostname, size);
pos += size;
memcpy(&pDHCP->options[option_size], hostname, size);
option_size += size;
// Set requested IP address
size = sizeof(dhcp_opt_hdr_t);
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[pos];
pOpt_hdr = (dhcp_opt_hdr_t*)&pDHCP->options[option_size];
pOpt_hdr->code = DHCP_OPT_REQIP;
pOpt_hdr->len = 4;
pos += size;
option_size += size;
size = pOpt_hdr->len;
memcpy(&pDHCP->options[pos], pLast->yiaddr, size);
pos += size;
memcpy(&pDHCP->options[option_size], pLast->yiaddr, size);
option_size += size;
pDHCP->options[pos] = DHCP_OPT_END;
pDHCP->options[option_size] = DHCP_OPT_END;
option_size++;
break;
default:
break;
}
pData = (uint8_t*)Eth_pkt_append(pPacket, sizeof(DHCP));
UDP_create(pPacket, inet_addr_src, 68, inet_addr_dst, 67, (uint8_t*)&dhcp, sizeof(DHCP) - sizeof(dhcp_option_t) + option_size);
}