#include "nest/bird.h"
#include "conf/conf.h"
#include "filter/filter.h"
+#include "filter/f-inst.h"
+#include "lib/idm.h"
+#include "nest/protocol.h"
+#include "nest/route.h"
#define P(a,b) ((a<<8) | b)
-struct f_inst *
-f_new_inst(enum f_instruction_code fi_code)
+const char *
+filter_name(const struct filter *filter)
{
- struct f_inst * ret;
- ret = cfg_allocz(sizeof(struct f_inst));
- ret->fi_code = fi_code;
- ret->lineno = ifs->lino;
- return ret;
+ if (!filter)
+ return "ACCEPT";
+ else if (filter == FILTER_REJECT)
+ return "REJECT";
+ else if (!filter->sym)
+ return "(unnamed)";
+ else
+ return filter->sym->name;
}
-struct f_inst *
-f_new_inst_da(enum f_instruction_code fi_code, struct f_dynamic_attr da)
+struct filter *f_new_where(struct f_inst *where)
{
- struct f_inst *ret = f_new_inst(fi_code);
- ret->aux = (da.f_type << 8) | da.type;
- ret->a2.i = da.ea_code;
- return ret;
-}
+ struct f_inst *cond = f_new_inst(FI_CONDITION, where,
+ f_new_inst(FI_DIE, F_ACCEPT),
+ f_new_inst(FI_DIE, F_REJECT));
-struct f_inst *
-f_new_inst_sa(enum f_instruction_code fi_code, struct f_static_attr sa)
-{
- struct f_inst *ret = f_new_inst(fi_code);
- ret->aux = sa.f_type;
- ret->a2.i = sa.sa_code;
- ret->a1.i = sa.readonly;
- return ret;
+ struct filter *f = cfg_allocz(sizeof(struct filter));
+ f->root = f_linearize(cond);
+ return f;
}
-/*
- * Generate set_dynamic( operation( get_dynamic(), argument ) )
- */
-struct f_inst *
-f_generate_complex(int operation, int operation_aux, struct f_dynamic_attr da, struct f_inst *argument)
+#define CA_KEY(n) n->name, n->fda.type
+#define CA_NEXT(n) n->next
+#define CA_EQ(na,ta,nb,tb) (!strcmp(na,nb) && (ta == tb))
+#define CA_FN(n,t) (mem_hash(n, strlen(n)) ^ (t*0xaae99453U))
+#define CA_ORDER 8 /* Fixed */
+
+struct ca_storage {
+ struct ca_storage *next;
+ struct f_dynamic_attr fda;
+ u32 uc;
+ char name[0];
+};
+
+HASH(struct ca_storage) ca_hash;
+
+static struct idm ca_idm;
+static struct ca_storage **ca_storage;
+static uint ca_storage_max;
+
+static void
+ca_free(resource *r)
{
- struct f_inst *set_dyn = f_new_inst_da(FI_EA_SET, da),
- *oper = f_new_inst(operation),
- *get_dyn = f_new_inst_da(FI_EA_GET, da);
+ struct custom_attribute *ca = (void *) r;
+ struct ca_storage *cas = HASH_FIND(ca_hash, CA, ca->name, ca->fda->type);
+ ASSERT(cas);
- oper->aux = operation_aux;
- oper->a1.p = get_dyn;
- oper->a2.p = argument;
+ ca->name = NULL;
+ ca->fda = NULL;
+ if (!--cas->uc) {
+ uint id = EA_CUSTOM_ID(cas->fda.ea_code);
+ idm_free(&ca_idm, id);
+ HASH_REMOVE(ca_hash, CA, cas);
+ ca_storage[id] = NULL;
+ mb_free(cas);
+ }
+}
- set_dyn->a1.p = oper;
- return set_dyn;
+static void
+ca_dump(resource *r)
+{
+ struct custom_attribute *ca = (void *) r;
+ debug("name \"%s\" id 0x%04x ea_type 0x%02x f_type 0x%02x\n",
+ ca->name, ca->fda->ea_code, ca->fda->type, ca->fda->f_type);
}
-struct f_inst *
-f_generate_roa_check(struct rtable_config *table, struct f_inst *prefix, struct f_inst *asn)
+static struct resclass ca_class = {
+ .name = "Custom attribute",
+ .size = sizeof(struct custom_attribute),
+ .free = ca_free,
+ .dump = ca_dump,
+ .lookup = NULL,
+ .memsize = NULL,
+};
+
+struct custom_attribute *
+ca_lookup(pool *p, const char *name, int f_type)
{
- struct f_inst_roa_check *ret = cfg_allocz(sizeof(struct f_inst_roa_check));
- ret->i.fi_code = FI_ROA_CHECK;
- ret->i.lineno = ifs->lino;
- ret->i.arg1 = prefix;
- ret->i.arg2 = asn;
- /* prefix == NULL <-> asn == NULL */
-
- if (table->addr_type != NET_ROA4 && table->addr_type != NET_ROA6)
- cf_error("%s is not a ROA table", table->name);
- ret->rtc = table;
-
- return &ret->i;
+ int ea_type;
+
+ switch (f_type) {
+ case T_INT:
+ ea_type = EAF_TYPE_INT;
+ break;
+ case T_IP:
+ ea_type = EAF_TYPE_IP_ADDRESS;
+ break;
+ case T_QUAD:
+ ea_type = EAF_TYPE_ROUTER_ID;
+ break;
+ case T_PATH:
+ ea_type = EAF_TYPE_AS_PATH;
+ break;
+ case T_CLIST:
+ ea_type = EAF_TYPE_INT_SET;
+ break;
+ case T_ECLIST:
+ ea_type = EAF_TYPE_EC_SET;
+ break;
+ case T_LCLIST:
+ ea_type = EAF_TYPE_LC_SET;
+ break;
+ default:
+ cf_error("Custom route attribute of unsupported type");
+ }
+
+ static int inited = 0;
+ if (!inited) {
+ idm_init(&ca_idm, &root_pool, 8);
+ HASH_INIT(ca_hash, &root_pool, CA_ORDER);
+
+ ca_storage_max = 256;
+ ca_storage = mb_allocz(&root_pool, sizeof(struct ca_storage *) * ca_storage_max);
+
+ inited++;
+ }
+
+ struct ca_storage *cas = HASH_FIND(ca_hash, CA, name, ea_type);
+ if (cas) {
+ cas->uc++;
+ } else {
+
+ uint id = idm_alloc(&ca_idm);
+
+ if (id >= EA_CUSTOM_BIT)
+ cf_error("Too many custom attributes.");
+
+ if (id >= ca_storage_max) {
+ ca_storage_max *= 2;
+ ca_storage = mb_realloc(ca_storage, sizeof(struct ca_storage *) * ca_storage_max * 2);
+ }
+
+ cas = mb_allocz(&root_pool, sizeof(struct ca_storage) + strlen(name) + 1);
+ cas->fda = f_new_dynamic_attr(ea_type, f_type, EA_CUSTOM(id));
+ cas->uc = 1;
+
+ strcpy(cas->name, name);
+ ca_storage[id] = cas;
+
+ HASH_INSERT(ca_hash, CA, cas);
+ }
+
+ struct custom_attribute *ca = ralloc(p, &ca_class);
+ ca->fda = &(cas->fda);
+ ca->name = cas->name;
+ return ca;
}
-char *
-filter_name(struct filter *filter)
+const char *
+ea_custom_name(uint ea)
{
- if (!filter)
- return "ACCEPT";
- else if (filter == FILTER_REJECT)
- return "REJECT";
- else if (!filter->name)
- return "(unnamed)";
- else
- return filter->name;
+ uint id = EA_CUSTOM_ID(ea);
+ if (id >= ca_storage_max)
+ return NULL;
+
+ if (!ca_storage[id])
+ return NULL;
+
+ return ca_storage[id]->name;
}
+
projects / thirdparty / bird.git / blobdiff