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Filters always allocate from tmp_linpool

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This commit is contained in:
Maria Matejka 2022-04-10 18:55:15 +02:00
parent de86040b2c
commit f2f3163f6c
15 changed files with 110 additions and 58 deletions
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6
conf/confbase.Y
View File

@ -152,9 +152,9 @@ conf: definition ;
definition:
DEFINE symbol '=' term ';' {
struct f_val *val = cfg_allocz(sizeof(struct f_val));
if (f_eval(f_linearize($4), cfg_mem, val) > F_RETURN) cf_error("Runtime error");
cf_define_symbol($2, SYM_CONSTANT | val->type, val, val);
struct f_val val;
if (f_eval(f_linearize($4), &val) > F_RETURN) cf_error("Runtime error");
cf_define_symbol($2, SYM_CONSTANT | val.type, val, lp_val_copy(cfg_mem, &val));
}
;

2
filter/config.Y
View File

@ -529,7 +529,7 @@ set_atom:
| VPN_RD { $$.type = T_RD; $$.val.ec = $1; }
| ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); }
| '(' term ')' {
if (f_eval(f_linearize($2), cfg_mem, &($$)) > F_RETURN) cf_error("Runtime error");
if (f_eval(f_linearize($2), &($$)) > F_RETURN) cf_error("Runtime error");
if (!f_valid_set_type($$.type)) cf_error("Set-incompatible type");
}
| CF_SYM_KNOWN {

72
filter/data.c
View File

@ -602,3 +602,75 @@ val_dump(const struct f_val *v) {
return val_dump_buffer;
}
struct f_val *
lp_val_copy(struct linpool *lp, const struct f_val *v)
{
switch (v->type)
{
case T_VOID:
case T_BOOL:
case T_INT:
case T_IP:
case T_PAIR:
case T_QUAD:
case T_EC:
case T_LC:
case T_RD:
case T_ENUM:
case T_PATH_MASK_ITEM:
/* These aren't embedded but there is no need to copy them */
case T_SET:
case T_PREFIX_SET:
case T_PATH_MASK:
case T_IFACE:
{
struct f_val *out = lp_alloc(lp, sizeof(*out));
*out = *v;
return out;
}
case T_NET:
{
struct {
struct f_val val;
net_addr net[0];
} *out = lp_alloc(lp, sizeof(*out) + v->val.net->length);
out->val = *v;
out->val.val.net = out->net;
net_copy(out->net, v->val.net);
return &out->val;
}
case T_STRING:
{
uint len = strlen(v->val.s);
struct {
struct f_val val;
char buf[0];
} *out = lp_alloc(lp, sizeof(*out) + len + 1);
out->val = *v;
out->val.val.s = out->buf;
memcpy(out->buf, v->val.s, len+1);
return &out->val;
}
case T_PATH:
case T_CLIST:
case T_ECLIST:
case T_LCLIST:
{
struct {
struct f_val val;
struct adata ad;
} *out = lp_alloc(lp, sizeof(*out) + v->val.ad->length);
out->val = *v;
out->val.val.ad = &out->ad;
memcpy(&out->ad, v->val.ad, v->val.ad->length);
return &out->val;
}
default:
bug("Unknown type in value copy: %d", v->type);
}
}

4
filter/data.h
View File

@ -213,6 +213,8 @@ void val_format(const struct f_val *v, buffer *buf);
char *val_format_str(struct linpool *lp, const struct f_val *v);
const char *val_dump(const struct f_val *v);
struct f_val *lp_val_copy(struct linpool *lp, const struct f_val *v);
static inline int val_is_ip4(const struct f_val *v)
{ return (v->type == T_IP) && ipa_is_ip4(v->val.ip); }
int val_in_range(const struct f_val *v1, const struct f_val *v2);
@ -249,6 +251,6 @@ static inline const struct f_val *f_get_empty(btype t)
}
}
enum filter_return f_eval(const struct f_line *expr, struct linpool *tmp_pool, struct f_val *pres);
enum filter_return f_eval(const struct f_line *expr, struct f_val *pres);
#endif

6
filter/f-inst.c
View File

@ -696,7 +696,7 @@
DYNAMIC_ATTR;
ARG_TYPE(1, da.type);
{
struct ea_list *l = lp_alloc(fs->pool, sizeof(struct ea_list) + sizeof(eattr));
struct ea_list *l = tmp_alloc(sizeof(struct ea_list) + sizeof(eattr));
l->next = NULL;
l->flags = EALF_SORTED;
@ -718,7 +718,7 @@
break;
case T_IP:
l->attrs[0].u.ptr = lp_store_adata(fs->pool, &v1.val.ip, sizeof(ip_addr));
l->attrs[0].u.ptr = tmp_store_adata(&v1.val.ip, sizeof(ip_addr));
break;
default:
@ -739,7 +739,7 @@
ACCESS_EATTRS;
f_rta_cow(fs);
ea_unset_attr(fs->eattrs, fs->pool, 1, da.ea_code);
ea_unset_attr(fs->eattrs, tmp_linpool, 1, da.ea_code);
}
INST(FI_LENGTH, 1, 1) { /* Get length of */

29
filter/filter.c
View File

@ -82,9 +82,6 @@ struct filter_state {
/* Cached pointer to ea_list */
struct ea_list **eattrs;
/* Linpool for adata allocation */
struct linpool *pool;
/* Buffer for log output */
struct buffer buf;
@ -134,7 +131,7 @@ f_rta_cow(struct filter_state *fs)
* at the end of f_run()), also the lock of hostentry is inherited (we
* suppose hostentry is not changed by filters).
*/
(*fs->rte)->attrs = rta_do_cow((*fs->rte)->attrs, fs->pool);
(*fs->rte)->attrs = rta_do_cow((*fs->rte)->attrs, tmp_linpool);
/* Re-cache the ea_list */
f_cache_eattrs(fs);
@ -202,8 +199,8 @@ interpret(struct filter_state *fs, const struct f_line *line, struct f_val *val)
return F_ERROR; \
} while(0)
#define falloc(size) lp_alloc(fs->pool, size)
#define fpool fs->pool
#define falloc(size) tmp_alloc(size)
#define fpool tmp_linpool
#define ACCESS_EATTRS do { if (!fs->eattrs) f_cache_eattrs(fs); } while (0)
@ -268,7 +265,7 @@ interpret(struct filter_state *fs, const struct f_line *line, struct f_val *val)
* modified in place, old cached rta is possibly freed.
*/
enum filter_return
f_run(const struct filter *filter, struct rte **rte, struct linpool *tmp_pool, int flags)
f_run(const struct filter *filter, struct rte **rte, int flags)
{
if (filter == FILTER_ACCEPT)
return F_ACCEPT;
@ -282,7 +279,6 @@ f_run(const struct filter *filter, struct rte **rte, struct linpool *tmp_pool, i
/* Initialize the filter state */
filter_state = (struct filter_state) {
.rte = rte,
.pool = tmp_pool,
.flags = flags,
};
@ -343,11 +339,10 @@ f_run(const struct filter *filter, struct rte **rte, struct linpool *tmp_pool, i
*/
enum filter_return
f_eval_rte(const struct f_line *expr, struct rte **rte, struct linpool *tmp_pool)
f_eval_rte(const struct f_line *expr, struct rte **rte)
{
filter_state = (struct filter_state) {
.rte = rte,
.pool = tmp_pool,
};
f_stack_init(filter_state);
@ -367,11 +362,9 @@ f_eval_rte(const struct f_line *expr, struct rte **rte, struct linpool *tmp_pool
* @pres: here the output will be stored
*/
enum filter_return
f_eval(const struct f_line *expr, struct linpool *tmp_pool, struct f_val *pres)
f_eval(const struct f_line *expr, struct f_val *pres)
{
filter_state = (struct filter_state) {
.pool = tmp_pool,
};
filter_state = (struct filter_state) {};
f_stack_init(filter_state);
@ -390,9 +383,7 @@ uint
f_eval_int(const struct f_line *expr)
{
/* Called independently in parse-time to eval expressions */
filter_state = (struct filter_state) {
.pool = cfg_mem,
};
filter_state = (struct filter_state) {};
f_stack_init(filter_state);
@ -413,10 +404,10 @@ f_eval_int(const struct f_line *expr)
* f_eval_buf - get a value of a term and print it to the supplied buffer
*/
enum filter_return
f_eval_buf(const struct f_line *expr, struct linpool *tmp_pool, buffer *buf)
f_eval_buf(const struct f_line *expr, buffer *buf)
{
struct f_val val;
enum filter_return fret = f_eval(expr, tmp_pool, &val);
enum filter_return fret = f_eval(expr, &val);
if (fret <= F_RETURN)
val_format(&val, buf);
return fret;

6
filter/filter.h
View File

@ -51,10 +51,10 @@ struct filter {
struct rte;
enum filter_return f_run(const struct filter *filter, struct rte **rte, struct linpool *tmp_pool, int flags);
enum filter_return f_eval_rte(const struct f_line *expr, struct rte **rte, struct linpool *tmp_pool);
enum filter_return f_run(const struct filter *filter, struct rte **rte, int flags);
enum filter_return f_eval_rte(const struct f_line *expr, struct rte **rte);
uint f_eval_int(const struct f_line *expr);
enum filter_return f_eval_buf(const struct f_line *expr, struct linpool *tmp_pool, buffer *buf);
enum filter_return f_eval_buf(const struct f_line *expr, buffer *buf);
const char *filter_name(const struct filter *filter);
int filter_same(const struct filter *new, const struct filter *old);

2
filter/filter_test.c
View File

@ -46,7 +46,7 @@ run_function(const void *arg)
if (t->cmp)
return t->result == f_same(t->fn, t->cmp);
enum filter_return fret = f_eval(t->fn, tmp_linpool, NULL);
enum filter_return fret = f_eval(t->fn, NULL);
return (fret < F_REJECT);
}

2
lib/attrs.h
View File

@ -37,6 +37,8 @@ lp_store_adata(struct linpool *pool, const void *buf, uint len)
return ad;
}
#define tmp_store_adata(buf, len) lp_store_adata(tmp_linpool, buf, len)
static inline int adata_same(const struct adata *a, const struct adata *b)
{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); }

2
nest/cmds.c
View File

@ -133,7 +133,7 @@ cmd_eval(const struct f_line *expr)
buffer buf;
LOG_BUFFER_INIT(buf);
if (f_eval_buf(expr, this_cli->parser_pool, &buf) > F_RETURN)
if (f_eval_buf(expr, &buf) > F_RETURN)
{
cli_msg(8008, "runtime error");
return;

4
nest/rt-show.c
View File

@ -169,7 +169,7 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
* command may change the export filter and do not update routes.
*/
int do_export = (ic > 0) ||
(f_run(ec->out_filter, &e, c->show_pool, FF_SILENT) <= F_ACCEPT);
(f_run(ec->out_filter, &e, FF_SILENT) <= F_ACCEPT);
if (do_export != (d->export_mode == RSEM_EXPORT))
goto skip;
@ -182,7 +182,7 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
if (d->show_protocol && (d->show_protocol != e->src->proto))
goto skip;
if (f_run(d->filter, &e, c->show_pool, 0) > F_ACCEPT)
if (f_run(d->filter, &e, 0) > F_ACCEPT)
goto skip;
if (d->stats < 2)

18
nest/rt-table.c
View File

@ -713,7 +713,7 @@ rte_trace_out(uint flag, struct channel *c, rte *e, char *msg)
}
static rte *
export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int silent)
export_filter(struct channel *c, rte *rt0, rte **rt_free, int silent)
{
struct proto *p = c->proto;
const struct filter *filter = c->out_filter;
@ -743,7 +743,7 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
}
v = filter && ((filter == FILTER_REJECT) ||
(f_run(filter, &rt, pool,
(f_run(filter, &rt,
(silent ? FF_SILENT : 0)) > F_ACCEPT));
if (v)
{
@ -767,12 +767,6 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
return NULL;
}
static inline rte *
export_filter(struct channel *c, rte *rt0, rte **rt_free, int silent)
{
return export_filter_(c, rt0, rt_free, rte_update_pool, silent);
}
static void
do_rt_notify(struct channel *c, net *net, rte *new, rte *old, int refeed)
{
@ -963,7 +957,7 @@ rt_export_merged(struct channel *c, net *net, rte **rt_free, linpool *pool, int
if (!rte_is_valid(best0))
return NULL;
best = export_filter_(c, best0, rt_free, pool, silent);
best = export_filter(c, best0, rt_free, silent);
if (!best || !rte_is_reachable(best))
return best;
@ -973,7 +967,7 @@ rt_export_merged(struct channel *c, net *net, rte **rt_free, linpool *pool, int
if (!rte_mergable(best0, rt0))
continue;
rt = export_filter_(c, rt0, &tmp, pool, 1);
rt = export_filter(c, rt0, &tmp, 1);
if (!rt)
continue;
@ -1592,7 +1586,7 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
}
else if (filter)
{
int fr = f_run(filter, &new, rte_update_pool, 0);
int fr = f_run(filter, &new, 0);
if (fr > F_ACCEPT)
{
stats->imp_updates_filtered++;
@ -1696,7 +1690,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter)
/* Rest is stripped down export_filter() */
int v = p->preexport ? p->preexport(p, rt) : 0;
if (v == RIC_PROCESS)
v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT);
v = (f_run(filter, &rt, FF_SILENT) <= F_ACCEPT);
/* Discard temporary rte */
if (rt != n->routes)

2
proto/mrt/mrt.c
View File

@ -525,7 +525,7 @@ mrt_rib_table_dump(struct mrt_table_dump_state *s, net *n, int add_path)
continue;
}
if (f_run(s->filter, &rt, s->linpool, 0) <= F_ACCEPT)
if (f_run(s->filter, &rt, 0) <= F_ACCEPT)
mrt_rib_table_entry(s, rt);
if (rt != rt0)

11
proto/static/static.c
View File

@ -47,8 +47,6 @@
#include "static.h"
static linpool *static_lp;
static inline struct rte_src * static_get_source(struct static_proto *p, uint i)
{ return i ? rt_get_source(&p->p, i) : p->p.main_source; }
@ -114,7 +112,7 @@ static_announce_rte(struct static_proto *p, struct static_route *r)
net_copy(e->net->n.addr, r->net);
/* Evaluate the filter */
f_eval_rte(r->cmds, &e, static_lp);
f_eval_rte(r->cmds, &e);
/* Remove the temporary node */
e->net = NULL;
@ -122,10 +120,6 @@ static_announce_rte(struct static_proto *p, struct static_route *r)
rte_update2(p->p.main_channel, r->net, e, src);
r->state = SRS_CLEAN;
if (r->cmds)
lp_flush(static_lp);
return;
withdraw:
@ -485,9 +479,6 @@ static_start(struct proto *P)
struct static_config *cf = (void *) P->cf;
struct static_route *r;
if (!static_lp)
static_lp = lp_new(&root_pool);
if (p->igp_table_ip4)
rt_lock_table(p->igp_table_ip4);

2
sysdep/unix/krt.c
View File

@ -589,7 +589,7 @@ krt_export_net(struct krt_proto *p, net *net, rte **rt_free)
if (filter == FILTER_ACCEPT)
goto accept;
if (f_run(filter, &rt, krt_filter_lp, FF_SILENT) > F_ACCEPT)
if (f_run(filter, &rt, FF_SILENT) > F_ACCEPT)
goto reject;