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Changed etharp to use a defined hardware address length of 6 to avoid loading netif->hwaddr_len every time (since this file is only used for ethernet and struct eth_addr already had a defined length of 6).

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This commit is contained in:
goldsimon 2007-06-19 16:22:55 +00:00
parent ec7333d406
commit d3f0a3211d
3 changed files with 43 additions and 24 deletions
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5
CHANGELOG
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@ -19,6 +19,11 @@ HISTORY
++ New features: ++ New features:
2007-06-18 Simon Goldschmidt
* etharp.c, etharp.h: Changed etharp to use a defined hardware address length
of 6 to avoid loading netif->hwaddr_len every time (since this file is only
used for ethernet and struct eth_addr already had a defined length of 6).
2007-06-17 Simon Goldschmidt 2007-06-17 Simon Goldschmidt
* sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
to disable UDP checksum generation on transmit. to disable UDP checksum generation on transmit.

8
src/include/netif/etharp.h
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@ -49,12 +49,16 @@ extern "C" {
#define ETH_PAD_SIZE 0 #define ETH_PAD_SIZE 0
#endif #endif
#ifndef ETHARP_HWADDR_LEN
#define ETHARP_HWADDR_LEN 6
#endif
#ifdef PACK_STRUCT_USE_INCLUDES #ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h" # include "arch/bpstruct.h"
#endif #endif
PACK_STRUCT_BEGIN PACK_STRUCT_BEGIN
struct eth_addr { struct eth_addr {
PACK_STRUCT_FIELD(u8_t addr[6]); PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
} PACK_STRUCT_STRUCT; } PACK_STRUCT_STRUCT;
PACK_STRUCT_END PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES #ifdef PACK_STRUCT_USE_INCLUDES
@ -150,7 +154,7 @@ err_t etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_a
unsigned short int opcode); unsigned short int opcode);
#endif /* LWIP_AUTOIP */ #endif /* LWIP_AUTOIP */
#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, 6) == 0) #define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)
#ifdef __cplusplus #ifdef __cplusplus
} }

42
src/netif/etharp.c
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@ -403,7 +403,7 @@ update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *e
s8_t i; s8_t i;
u8_t k; u8_t k;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | 3, ("update_arp_entry()\n")); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | 3, ("update_arp_entry()\n"));
LWIP_ASSERT("netif->hwaddr_len == 6", netif->hwaddr_len == 6); LWIP_ASSERT("netif->hwaddr_len == ETHARP_HWADDR_LEN", netif->hwaddr_len == ETHARP_HWADDR_LEN);
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F" - %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F"\n", LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F" - %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F"\n",
ip4_addr1(ipaddr), ip4_addr2(ipaddr), ip4_addr3(ipaddr), ip4_addr4(ipaddr), ip4_addr1(ipaddr), ip4_addr2(ipaddr), ip4_addr3(ipaddr), ip4_addr4(ipaddr),
ethaddr->addr[0], ethaddr->addr[1], ethaddr->addr[2], ethaddr->addr[0], ethaddr->addr[1], ethaddr->addr[2],
@ -431,15 +431,15 @@ update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *e
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: updating stable entry %"S16_F"\n", (s16_t)i)); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: updating stable entry %"S16_F"\n", (s16_t)i));
/* update address */ /* update address */
k = netif->hwaddr_len; k = ETHARP_HWADDR_LEN;
while (k > 0) { while (k > 0) {
k--; k--;
arp_table[i].ethaddr.addr[k] = ethaddr->addr[k]; arp_table[i].ethaddr.addr[k] = ethaddr->addr[k];
} }
/* reset time stamp */ /* reset time stamp */
arp_table[i].ctime = 0; arp_table[i].ctime = 0;
/* this is where we will send out queued packets! */
#if ARP_QUEUEING #if ARP_QUEUEING
/* this is where we will send out queued packets! */
while (arp_table[i].q != NULL) { while (arp_table[i].q != NULL) {
struct pbuf *p; struct pbuf *p;
struct eth_hdr *ethhdr; struct eth_hdr *ethhdr;
@ -454,7 +454,7 @@ update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *e
/* Ethernet header */ /* Ethernet header */
ethhdr = p->payload; ethhdr = p->payload;
/* fill-in Ethernet header */ /* fill-in Ethernet header */
k = netif->hwaddr_len; k = ETHARP_HWADDR_LEN;
while(k > 0) { while(k > 0) {
k--; k--;
ethhdr->dest.addr[k] = ethaddr->addr[k]; ethhdr->dest.addr[k] = ethaddr->addr[k];
@ -620,7 +620,9 @@ etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr, struct pbuf *p)
hdr->dipaddr = hdr->sipaddr; hdr->dipaddr = hdr->sipaddr;
hdr->sipaddr = *(struct ip_addr2 *)&netif->ip_addr; hdr->sipaddr = *(struct ip_addr2 *)&netif->ip_addr;
i = netif->hwaddr_len; LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
i = ETHARP_HWADDR_LEN;
while(i > 0) { while(i > 0) {
i--; i--;
hdr->dhwaddr.addr[i] = hdr->shwaddr.addr[i]; hdr->dhwaddr.addr[i] = hdr->shwaddr.addr[i];
@ -743,7 +745,9 @@ etharp_output(struct netif *netif, struct pbuf *q, struct ip_addr *ipaddr)
/* obtain source Ethernet address of the given interface */ /* obtain source Ethernet address of the given interface */
srcaddr = (struct eth_addr *)netif->hwaddr; srcaddr = (struct eth_addr *)netif->hwaddr;
ethhdr = q->payload; ethhdr = q->payload;
i = netif->hwaddr_len; LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
i = ETHARP_HWADDR_LEN;
while(i > 0) { while(i > 0) {
i--; i--;
ethhdr->dest.addr[i] = dest->addr[i]; ethhdr->dest.addr[i] = dest->addr[i];
@ -807,8 +811,7 @@ etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
i = find_entry(ipaddr, ETHARP_TRY_HARD); i = find_entry(ipaddr, ETHARP_TRY_HARD);
/* could not find or create entry? */ /* could not find or create entry? */
if (i < 0) if (i < 0) {
{
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: could not create ARP entry\n")); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: could not create ARP entry\n"));
if (q) if (q)
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: packet dropped\n")); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: packet dropped\n"));
@ -838,7 +841,9 @@ etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
/* we have a valid IP->Ethernet address mapping, /* we have a valid IP->Ethernet address mapping,
* fill in the Ethernet header for the outgoing packet */ * fill in the Ethernet header for the outgoing packet */
struct eth_hdr *ethhdr = q->payload; struct eth_hdr *ethhdr = q->payload;
k = netif->hwaddr_len; LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
k = ETHARP_HWADDR_LEN;
while(k > 0) { while(k > 0) {
k--; k--;
ethhdr->dest.addr[k] = arp_table[i].ethaddr.addr[k]; ethhdr->dest.addr[k] = arp_table[i].ethaddr.addr[k];
@ -859,8 +864,6 @@ etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
p = q; p = q;
while (p) { while (p) {
LWIP_ASSERT("no packet queues allowed!", (p->len == p->tot_len) || (p->next == 0)); LWIP_ASSERT("no packet queues allowed!", (p->len == p->tot_len) || (p->next == 0));
if(p->len == p->tot_len) {
}
if(p->flags != PBUF_FLAG_ROM) { if(p->flags != PBUF_FLAG_ROM) {
copy_needed = 1; copy_needed = 1;
break; break;
@ -931,7 +934,10 @@ err_t
etharp_request(struct netif *netif, struct ip_addr *ipaddr) etharp_request(struct netif *netif, struct ip_addr *ipaddr)
{ {
struct eth_addr eth_addr_bc, eth_addr_zero; struct eth_addr eth_addr_bc, eth_addr_zero;
u8_t k = netif->hwaddr_len; u8_t k = ETHARP_HWADDR_LEN;
LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
while(k > 0) { while(k > 0) {
k--; k--;
eth_addr_bc.addr[k] = 0xFF; eth_addr_bc.addr[k] = 0xFF;
@ -964,7 +970,9 @@ etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *e
struct etharp_hdr *hdr = p->payload; struct etharp_hdr *hdr = p->payload;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_raw: sending raw ARP packet.\n")); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_raw: sending raw ARP packet.\n"));
hdr->opcode = htons(OpCode); hdr->opcode = htons(OpCode);
k = netif->hwaddr_len; k = ETHARP_HWADDR_LEN;
LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
/* Write the ARP MAC-Addresses */ /* Write the ARP MAC-Addresses */
while(k > 0) { while(k > 0) {
@ -980,7 +988,7 @@ etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *e
hdr->proto = htons(ETHTYPE_IP); hdr->proto = htons(ETHTYPE_IP);
ARPH_PROTOLEN_SET(hdr, sizeof(struct ip_addr)); ARPH_PROTOLEN_SET(hdr, sizeof(struct ip_addr));
k = netif->hwaddr_len; k = ETHARP_HWADDR_LEN;
/* Write the Ethernet MAC-Addresses */ /* Write the Ethernet MAC-Addresses */
while(k > 0) { while(k > 0) {
@ -1027,7 +1035,9 @@ etharp_request(struct netif *netif, struct ip_addr *ipaddr)
struct etharp_hdr *hdr = p->payload; struct etharp_hdr *hdr = p->payload;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n")); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n"));
hdr->opcode = htons(ARP_REQUEST); hdr->opcode = htons(ARP_REQUEST);
k = netif->hwaddr_len; LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
k = ETHARP_HWADDR_LEN;
while(k > 0) { while(k > 0) {
k--; k--;
hdr->shwaddr.addr[k] = srcaddr->addr[k]; hdr->shwaddr.addr[k] = srcaddr->addr[k];
@ -1043,7 +1053,7 @@ etharp_request(struct netif *netif, struct ip_addr *ipaddr)
hdr->proto = htons(ETHTYPE_IP); hdr->proto = htons(ETHTYPE_IP);
ARPH_PROTOLEN_SET(hdr, sizeof(struct ip_addr)); ARPH_PROTOLEN_SET(hdr, sizeof(struct ip_addr));
k = netif->hwaddr_len; k = ETHARP_HWADDR_LEN;
while(k > 0) { while(k > 0) {
k--; k--;
/* broadcast to all network interfaces on the local network */ /* broadcast to all network interfaces on the local network */