diff options
Diffstat (limited to 'filter/filter.c')
| -rw-r--r-- | filter/filter.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/filter/filter.c b/filter/filter.c index c6c5c5a..7afae43 100644 --- a/filter/filter.c +++ b/filter/filter.c @@ -93,6 +93,8 @@ val_print(struct f_val v) printf( buf ); } +static struct rte **f_rte; + static struct f_val interpret(struct f_inst *what) { @@ -218,6 +220,36 @@ interpret(struct f_inst *what) bug( "unknown return type: can not happen"); } break; + case 'a': /* rta access */ + { + struct rta *rta = (*f_rte)->attrs; + res.type = what->a1.i; + switch(res.type) { + case T_IP: + res.val.ip = * (ip_addr *) ((char *) rta + what->a2.i); + break; + case T_PREFIX: /* Warning: this works only for prefix of network */ + { + res.val.px.ip = (*f_rte)->net->n.prefix; + res.val.px.len = (*f_rte)->net->n.pxlen; + break; + } + default: + bug( "Invalid type for rta access" ); + } + } + break; + case 'cp': /* Convert prefix to ... */ + ONEARG; + if (v1.type != T_PREFIX) + runtime( "Can not convert non-prefix this way" ); + res.type = what->a2.i; + switch(res.type) { + case T_INT: res.val.i = v1.val.px.len; break; + case T_IP: res.val.ip = v1.val.px.ip; break; + default: bug( "Unknown prefix to conversion\n" ); + } + break; default: bug( "Unknown instruction %d (%c)", what->code, what->code & 0xff); } @@ -233,6 +265,7 @@ f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struc struct f_val res; debug( "Running filter `%s'...", filter->name ); + f_rte = rte; inst = filter->root; res = interpret(inst); if (res.type != T_RETURN) |