iputils/patches/iputils-s20071127-addrcache.patch

   1 --- iputils/ping.c.addrcache    2002-09-20 17:08:11.000000000 +0200
   2 +++ iputils/ping.c      2003-05-15 16:41:19.000000000 +0200
   3 @@ -1124,6 +1124,12 @@
   4  {
   5         struct hostent *hp;
   6         static char buf[4096];
   7 +       static __u32 addr_cache = 0;
   8 +
   9 +       if ( addr == addr_cache )
  10 +               return buf;
  11 +
  12 +       addr_cache = addr;
  13
  14         if ((options & F_NUMERIC) ||
  15             !(hp = gethostbyaddr((char *)&addr, 4, AF_INET)))
  16 --- iputils/ping6.c.addrcache   2002-09-20 17:08:11.000000000 +0200
  17 +++ iputils/ping6.c     2003-05-15 16:41:19.000000000 +0200
  18 @@ -893,7 +893,12 @@
  19   */
  20  char * pr_addr(struct in6_addr *addr)
  21  {
  22 -       struct hostent *hp = NULL;
  23 +       static struct hostent *hp;
  24 +       static struct in6_addr addr_cache;
  25 +
  26 +       if (memcmp(addr, &addr_cache, sizeof(addr_cache)) == 0)
  27 +               return hp ? hp->h_name : pr_addr_n(addr);
  28 +       memcpy(&addr_cache, addr, sizeof(addr_cache));
  29
  30         if (!(options&F_NUMERIC))
  31                 hp = gethostbyaddr((__u8*)addr, sizeof(struct in6_addr), AF_INET6);