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Minor speedups: use ip_addr_copy, use SMEMCPY, use htonX on constants instead of variables

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This commit is contained in:
goldsimon 2010-02-14 12:43:24 +00:00
parent 96e9689dbd
commit 7b24a6360c
1 changed files with 6 additions and 6 deletions
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12
src/core/dns.c
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@ -443,7 +443,7 @@ dns_local_addhost(const char *hostname, const ip_addr_t *addr)
entry->name = (char*)entry + sizeof(struct local_hostlist_entry);
MEMCPY((char*)entry->name, hostname, namelen);
((char*)entry->name)[namelen] = 0;
ip_addr_set(&entry->addr, addr);
ip_addr_copy(&entry->addr, addr);
entry->next = local_hostlist_dynamic;
local_hostlist_dynamic = entry;
return ERR_OK;
@ -622,7 +622,7 @@ dns_send(u8_t numdns, const char* name, u8_t id)
/* fill dns query */
qry.type = htons(DNS_RRTYPE_A);
qry.cls = htons(DNS_RRCLASS_IN);
MEMCPY(query, &qry, SIZEOF_DNS_QUERY);
SMEMCPY(query, &qry, SIZEOF_DNS_QUERY);
/* resize pbuf to the exact dns query */
pbuf_realloc(p, (u16_t)((query + SIZEOF_DNS_QUERY) - ((char*)(p->payload))));
@ -823,16 +823,16 @@ dns_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *addr, u16_t
pHostname = (char *) dns_parse_name((unsigned char *)pHostname);
/* Check for IP address type and Internet class. Others are discarded. */
MEMCPY(&ans, pHostname, SIZEOF_DNS_ANSWER);
if((ntohs(ans.type) == DNS_RRTYPE_A) && (ntohs(ans.cls) == DNS_RRCLASS_IN) &&
(ntohs(ans.len) == sizeof(ip_addr_t)) ) {
SMEMCPY(&ans, pHostname, SIZEOF_DNS_ANSWER);
if((ans.type == htons(DNS_RRTYPE_A)) && (ans.cls == htons(DNS_RRCLASS_IN)) &&
(ans.len == htons(sizeof(ip_addr_t))) ) {
/* read the answer resource record's TTL, and maximize it if needed */
pEntry->ttl = ntohl(ans.ttl);
if (pEntry->ttl > DNS_MAX_TTL) {
pEntry->ttl = DNS_MAX_TTL;
}
/* read the IP address after answer resource record's header */
MEMCPY( &(pEntry->ipaddr), (pHostname+SIZEOF_DNS_ANSWER), sizeof(ip_addr_t));
SMEMCPY(&(pEntry->ipaddr), (pHostname+SIZEOF_DNS_ANSWER), sizeof(ip_addr_t));
LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": response = ", pEntry->name));
ip_addr_debug_print(DNS_DEBUG, (&(pEntry->ipaddr)));
LWIP_DEBUGF(DNS_DEBUG, ("\n"));