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libiproute: reuse string constants

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text	   data	    bss	    dec	    hex	filename
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1020815	    559	   5052	1026426	  fa97a	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2020-11-21 17:23:13 +01:00
parent 2c92d1ec58
commit 4323ac861e
1 changed files with 33 additions and 20 deletions
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53
networking/libiproute/rtm_map.c
View File

@ -11,33 +11,55 @@
#include "rt_names.h"
#include "utils.h"
static const char keywords[] ALIGN1 =
"local\0""nat\0""broadcast\0""brd\0""anycast\0"
"multicast\0""prohibit\0""unreachable\0""blackhole\0"
"xresolve\0""unicast\0""throw\0";
enum {
ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
ARG_xresolve, ARG_unicast, ARG_throw
};
#define str_local keywords
#define str_nat (str_local + sizeof("local"))
#define str_broadcast (str_nat + sizeof("nat"))
#define str_brd (str_broadcast + sizeof("broadcast"))
#define str_anycast (str_brd + sizeof("brd"))
#define str_multicast (str_anycast + sizeof("anycast"))
#define str_prohibit (str_multicast + sizeof("multicast"))
#define str_unreachable (str_prohibit + sizeof("prohibit"))
#define str_blackhole (str_unreachable + sizeof("unreachable"))
#define str_xresolve (str_blackhole + sizeof("blackhole"))
#define str_unicast (str_xresolve + sizeof("xresolve"))
#define str_throw (str_unicast + sizeof("unicast"))
const char* FAST_FUNC rtnl_rtntype_n2a(int id)
{
switch (id) {
case RTN_UNSPEC:
return "none";
case RTN_UNICAST:
return "unicast";
return str_unicast;
case RTN_LOCAL:
return "local";
return str_local;
case RTN_BROADCAST:
return "broadcast";
return str_broadcast;
case RTN_ANYCAST:
return "anycast";
return str_anycast;
case RTN_MULTICAST:
return "multicast";
return str_multicast;
case RTN_BLACKHOLE:
return "blackhole";
return str_blackhole;
case RTN_UNREACHABLE:
return "unreachable";
return str_unreachable;
case RTN_PROHIBIT:
return "prohibit";
return str_prohibit;
case RTN_THROW:
return "throw";
return str_throw;
case RTN_NAT:
return "nat";
return str_nat;
case RTN_XRESOLVE:
return "xresolve";
return str_xresolve;
default:
return itoa(id);
}
@ -45,15 +67,6 @@ const char* FAST_FUNC rtnl_rtntype_n2a(int id)
int FAST_FUNC rtnl_rtntype_a2n(int *id, char *arg)
{
static const char keywords[] ALIGN1 =
"local\0""nat\0""broadcast\0""brd\0""anycast\0"
"multicast\0""prohibit\0""unreachable\0""blackhole\0"
"xresolve\0""unicast\0""throw\0";
enum {
ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
ARG_xresolve, ARG_unicast, ARG_throw
};
const smalluint key = index_in_substrings(keywords, arg) + 1;
char *end;
unsigned long res;