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Diffstat (limited to 'Projects/Webserver/Lib/uip/uip_arp.c')
-rw-r--r--Projects/Webserver/Lib/uip/uip_arp.c79
1 files changed, 44 insertions, 35 deletions
diff --git a/Projects/Webserver/Lib/uip/uip_arp.c b/Projects/Webserver/Lib/uip/uip_arp.c
index 75ade6492..dc21cc0a4 100644
--- a/Projects/Webserver/Lib/uip/uip_arp.c
+++ b/Projects/Webserver/Lib/uip/uip_arp.c
@@ -54,7 +54,7 @@
*
* This file is part of the uIP TCP/IP stack.
*
- * $Id: uip_arp.c,v 1.8 2006/06/02 23:36:21 adam Exp $
+ * $Id: uip_arp.c,v 1.5 2008/02/07 01:35:00 adamdunkels Exp $
*
*/
@@ -71,9 +71,9 @@ struct arp_hdr {
u8_t protolen;
u16_t opcode;
struct uip_eth_addr shwaddr;
- u16_t sipaddr[2];
+ uip_ipaddr_t sipaddr;
struct uip_eth_addr dhwaddr;
- u16_t dipaddr[2];
+ uip_ipaddr_t dipaddr;
};
struct ethip_hdr {
@@ -87,8 +87,7 @@ struct ethip_hdr {
ttl,
proto;
u16_t ipchksum;
- u16_t srcipaddr[2],
- destipaddr[2];
+ uip_ipaddr_t srcipaddr, destipaddr;
};
#define ARP_REQUEST 1
@@ -97,7 +96,7 @@ struct ethip_hdr {
#define ARP_HWTYPE_ETH 1
struct arp_entry {
- u16_t ipaddr[2];
+ uip_ipaddr_t ipaddr;
struct uip_eth_addr ethaddr;
u8_t time;
};
@@ -107,7 +106,7 @@ static const struct uip_eth_addr broadcast_ethaddr =
static const u16_t broadcast_ipaddr[2] = {0xffff,0xffff};
static struct arp_entry arp_table[UIP_ARPTAB_SIZE];
-static u16_t ipaddr[2];
+static uip_ipaddr_t ipaddr;
static u8_t i, c;
static u8_t arptime;
@@ -115,6 +114,15 @@ static u8_t tmpage;
#define BUF ((struct arp_hdr *)&uip_buf[0])
#define IPBUF ((struct ethip_hdr *)&uip_buf[0])
+
+#define DEBUG 0
+#if DEBUG
+#include <stdio.h>
+#define PRINTF(...) printf(__VA_ARGS__)
+#else
+#define PRINTF(...)
+#endif
+
/*-----------------------------------------------------------------------------------*/
/**
* Initialize the ARP module.
@@ -125,7 +133,7 @@ void
uip_arp_init(void)
{
for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
- memset(arp_table[i].ipaddr, 0, 4);
+ memset(&arp_table[i].ipaddr, 0, 4);
}
}
/*-----------------------------------------------------------------------------------*/
@@ -146,16 +154,16 @@ uip_arp_timer(void)
++arptime;
for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
tabptr = &arp_table[i];
- if((tabptr->ipaddr[0] | tabptr->ipaddr[1]) != 0 &&
+ if(uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr) &&
arptime - tabptr->time >= UIP_ARP_MAXAGE) {
- memset(tabptr->ipaddr, 0, 4);
+ memset(&tabptr->ipaddr, 0, 4);
}
}
}
/*-----------------------------------------------------------------------------------*/
static void
-uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
+uip_arp_update(uip_ipaddr_t *ipaddr, struct uip_eth_addr *ethaddr)
{
register struct arp_entry *tabptr;
/* Walk through the ARP mapping table and try to find an entry to
@@ -165,13 +173,11 @@ uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
tabptr = &arp_table[i];
/* Only check those entries that are actually in use. */
- if(tabptr->ipaddr[0] != 0 &&
- tabptr->ipaddr[1] != 0) {
+ if(!uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr)) {
/* Check if the source IP address of the incoming packet matches
the IP address in this ARP table entry. */
- if(ipaddr[0] == tabptr->ipaddr[0] &&
- ipaddr[1] == tabptr->ipaddr[1]) {
+ if(uip_ipaddr_cmp(ipaddr, &tabptr->ipaddr)) {
/* An old entry found, update this and return. */
memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
@@ -188,8 +194,7 @@ uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
/* First, we try to find an unused entry in the ARP table. */
for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
tabptr = &arp_table[i];
- if(tabptr->ipaddr[0] == 0 &&
- tabptr->ipaddr[1] == 0) {
+ if(uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr)) {
break;
}
}
@@ -212,7 +217,7 @@ uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
/* Now, i is the ARP table entry which we will fill with the new
information. */
- memcpy(tabptr->ipaddr, ipaddr, 4);
+ uip_ipaddr_copy(&tabptr->ipaddr, ipaddr);
memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
tabptr->time = arptime;
}
@@ -288,24 +293,28 @@ uip_arp_arpin(void)
case HTONS(ARP_REQUEST):
/* ARP request. If it asked for our address, we send out a
reply. */
- if(uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr)) {
+ /* if(BUF->dipaddr[0] == uip_hostaddr[0] &&
+ BUF->dipaddr[1] == uip_hostaddr[1]) {*/
+ PRINTF("uip_arp_arpin: request for %d.%d.%d.%d (we are %d.%d.%d.%d)\n",
+ BUF->dipaddr.u8[0], BUF->dipaddr.u8[1],
+ BUF->dipaddr.u8[2], BUF->dipaddr.u8[3],
+ uip_hostaddr.u8[0], uip_hostaddr.u8[1],
+ uip_hostaddr.u8[2], uip_hostaddr.u8[3]);
+ if(uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr)) {
/* First, we register the one who made the request in our ARP
table, since it is likely that we will do more communication
with this host in the future. */
- uip_arp_update(BUF->sipaddr, &BUF->shwaddr);
+ uip_arp_update(&BUF->sipaddr, &BUF->shwaddr);
- /* The reply opcode is 2. */
- BUF->opcode = HTONS(2);
+ BUF->opcode = HTONS(ARP_REPLY);
memcpy(BUF->dhwaddr.addr, BUF->shwaddr.addr, 6);
memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
memcpy(BUF->ethhdr.dest.addr, BUF->dhwaddr.addr, 6);
- BUF->dipaddr[0] = BUF->sipaddr[0];
- BUF->dipaddr[1] = BUF->sipaddr[1];
- BUF->sipaddr[0] = uip_hostaddr[0];
- BUF->sipaddr[1] = uip_hostaddr[1];
+ uip_ipaddr_copy(&BUF->dipaddr, &BUF->sipaddr);
+ uip_ipaddr_copy(&BUF->sipaddr, &uip_hostaddr);
BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
uip_len = sizeof(struct arp_hdr);
@@ -314,8 +323,8 @@ uip_arp_arpin(void)
case HTONS(ARP_REPLY):
/* ARP reply. We insert or update the ARP table if it was meant
for us. */
- if(uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr)) {
- uip_arp_update(BUF->sipaddr, &BUF->shwaddr);
+ if(uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr)) {
+ uip_arp_update(&BUF->sipaddr, &BUF->shwaddr);
}
break;
}
@@ -363,23 +372,23 @@ uip_arp_out(void)
packet with an ARP request for the IP address. */
/* First check if destination is a local broadcast. */
- if(uip_ipaddr_cmp(IPBUF->destipaddr, broadcast_ipaddr)) {
+ if(uip_ipaddr_cmp(&IPBUF->destipaddr, &uip_broadcast_addr)) {
memcpy(IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6);
} else {
/* Check if the destination address is on the local network. */
- if(!uip_ipaddr_maskcmp(IPBUF->destipaddr, uip_hostaddr, uip_netmask)) {
+ if(!uip_ipaddr_maskcmp(&IPBUF->destipaddr, &uip_hostaddr, &uip_netmask)) {
/* Destination address was not on the local network, so we need to
use the default router's IP address instead of the destination
address when determining the MAC address. */
- uip_ipaddr_copy(ipaddr, uip_draddr);
+ uip_ipaddr_copy(&ipaddr, &uip_draddr);
} else {
/* Else, we use the destination IP address. */
- uip_ipaddr_copy(ipaddr, IPBUF->destipaddr);
+ uip_ipaddr_copy(&ipaddr, &IPBUF->destipaddr);
}
for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
tabptr = &arp_table[i];
- if(uip_ipaddr_cmp(ipaddr, tabptr->ipaddr)) {
+ if(uip_ipaddr_cmp(&ipaddr, &tabptr->ipaddr)) {
break;
}
}
@@ -393,8 +402,8 @@ uip_arp_out(void)
memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
- uip_ipaddr_copy(BUF->dipaddr, ipaddr);
- uip_ipaddr_copy(BUF->sipaddr, uip_hostaddr);
+ uip_ipaddr_copy(&BUF->dipaddr, &ipaddr);
+ uip_ipaddr_copy(&BUF->sipaddr, &uip_hostaddr);
BUF->opcode = HTONS(ARP_REQUEST); /* ARP request. */
BUF->hwtype = HTONS(ARP_HWTYPE_ETH);
BUF->protocol = HTONS(UIP_ETHTYPE_IP);
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-23 13:47:11 +0000