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Allows some modifications of dest attribute in filters.

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This commit is contained in:
Ondrej Zajicek
2012-04-29 01:35:52 +02:00
parent bf42207332
commit 182a78957d
3 changed files with 27 additions and 5 deletions
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2
filter/config.Y
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@@ -703,7 +703,7 @@ static_attr:
| SOURCE { $$ = f_new_inst(); $$->aux = T_ENUM_RTS; $$->a2.i = OFFSETOF(struct rta, source); }
| SCOPE { $$ = f_new_inst(); $$->aux = T_ENUM_SCOPE; $$->a2.i = OFFSETOF(struct rta, scope); $$->a1.i = 1; }
| CAST { $$ = f_new_inst(); $$->aux = T_ENUM_RTC; $$->a2.i = OFFSETOF(struct rta, cast); }
| DEST { $$ = f_new_inst(); $$->aux = T_ENUM_RTD; $$->a2.i = OFFSETOF(struct rta, dest); }
| DEST { $$ = f_new_inst(); $$->aux = T_ENUM_RTD; $$->a2.i = OFFSETOF(struct rta, dest); $$->a1.i = 1; }
;
term:

19
filter/filter.c
View File

@@ -852,12 +852,25 @@ interpret(struct f_inst *what)
{
struct rta *rta = (*f_rte)->attrs;
switch (what->aux) {
case T_ENUM:
* ((char *) rta + what->a2.i) = v1.val.i;
break;
case T_IP:
* (ip_addr *) ((char *) rta + what->a2.i) = v1.val.px.ip;
break;
case T_ENUM_SCOPE:
rta->scope = v1.val.i;
break;
case T_ENUM_RTD:
i = v1.val.i;
if ((i != RTD_BLACKHOLE) && (i != RTD_UNREACHABLE) && (i != RTD_PROHIBIT))
runtime( "Destination can be changed only to blackhole, unreachable or prohibit" );
rta->dest = i;
rta->gw = IPA_NONE;
rta->iface = NULL;
rta->nexthops = NULL;
break;
default:
bug( "Unknown type in set of static attribute" );
}