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/*
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdbool.h>
#include <vlib/vlib.h>
#include <vnet/crypto/crypto.h>
vnet_crypto_main_t crypto_main;
u32
vnet_crypto_process_ops (vlib_main_t * vm, vnet_crypto_op_t ops[], u32 n_ops)
{
vnet_crypto_main_t *cm = &crypto_main;
u32 rv = 0, i;
for (i = 0; i < n_ops; i++)
{
vnet_crypto_op_type_t opt = ops[i].op;
vnet_crypto_op_t *opp = &ops[i];
if (cm->ops_handlers[opt])
rv += (cm->ops_handlers[opt]) (vm, &opp, 1);
else
ops[i].status = VNET_CRYPTO_OP_STATUS_FAIL_NO_HANDLER;
}
return rv;
}
u32
vnet_crypto_register_engine (vlib_main_t * vm, char *name, int prio,
char *desc)
{
vnet_crypto_main_t *cm = &crypto_main;
vnet_crypto_engine_t *p;
vec_add2 (cm->engines, p, 1);
p->name = name;
p->desc = desc;
p->priority = prio;
hash_set_mem (cm->engine_index_by_name, p->name, p - cm->engines);
return p - cm->engines;
}
int
vnet_crypto_set_handler (char *ops_handler_name, char *engine)
{
uword *p;
vnet_crypto_main_t *cm = &crypto_main;
vnet_crypto_op_type_t ot;
vnet_crypto_op_type_data_t *otd;
vnet_crypto_engine_t *ce;
p = hash_get_mem (cm->ops_handler_index_by_name, ops_handler_name);
if (!p)
return -1;
ot = p[0];
otd = cm->opt_data + ot;
p = hash_get_mem (cm->engine_index_by_name, engine);
if (!p)
return -1;
ce = cm->engines + p[0];
otd->active_engine_index = p[0];
cm->ops_handlers[ot] = ce->ops_handlers[ot];
return 0;
}
vlib_error_t *
vnet_crypto_register_ops_handler (vlib_main_t * vm, u32 engine_index,
vnet_crypto_op_type_t opt,
vnet_crypto_ops_handler_t * fn)
{
vnet_crypto_main_t *cm = &crypto_main;
vnet_crypto_engine_t *ae, *e = vec_elt_at_index (cm->engines, engine_index);
vnet_crypto_op_type_data_t *otd = cm->opt_data + opt;
vec_validate_aligned (cm->ops_handlers, VNET_CRYPTO_N_OP_TYPES - 1,
CLIB_CACHE_LINE_BYTES);
e->ops_handlers[opt] = fn;
if (otd->active_engine_index == ~0)
{
otd->active_engine_index = engine_index;
cm->ops_handlers[opt] = fn;
return 0;
}
ae = vec_elt_at_index (cm->engines, otd->active_engine_index);
if (ae->priority < e->priority)
{
otd->active_engine_index = engine_index;
cm->ops_handlers[opt] = fn;
}
return 0;
}
clib_error_t *
vnet_crypto_init (vlib_main_t * vm)
{
vnet_crypto_main_t *cm = &crypto_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
#define CRYPTO_ENC_STR "encrypt"
#define CRYPTO_DEC_STR "decrypt"
#define CRYPTO_HMAC_STR "hmac"
cm->engine_index_by_name = hash_create_string ( /* size */ 0,
sizeof (uword));
cm->ops_handler_index_by_name = hash_create_string (0, sizeof (uword));
vec_validate_aligned (cm->threads, tm->n_vlib_mains, CLIB_CACHE_LINE_BYTES);
vec_validate (cm->algs, VNET_CRYPTO_N_ALGS);
#define _(n, s) \
cm->algs[VNET_CRYPTO_ALG_##n].name = s; \
cm->opt_data[VNET_CRYPTO_OP_##n##_ENC].alg = VNET_CRYPTO_ALG_##n; \
cm->opt_data[VNET_CRYPTO_OP_##n##_DEC].alg = VNET_CRYPTO_ALG_##n; \
cm->opt_data[VNET_CRYPTO_OP_##n##_ENC].desc = CRYPTO_ENC_STR; \
cm->opt_data[VNET_CRYPTO_OP_##n##_DEC].desc = CRYPTO_DEC_STR; \
cm->opt_data[VNET_CRYPTO_OP_##n##_ENC].active_engine_index = ~0; \
cm->opt_data[VNET_CRYPTO_OP_##n##_DEC].active_engine_index = ~0; \
hash_set_mem (cm->ops_handler_index_by_name, CRYPTO_ENC_STR "-" s, \
VNET_CRYPTO_OP_##n##_ENC); \
hash_set_mem (cm->ops_handler_index_by_name, CRYPTO_DEC_STR "-" s, \
VNET_CRYPTO_OP_##n##_DEC);
foreach_crypto_alg;
#undef _
#define _(n, s) \
cm->algs[VNET_CRYPTO_ALG_##n].name = s; \
cm->opt_data[VNET_CRYPTO_OP_##n##_HMAC].alg = VNET_CRYPTO_ALG_##n; \
cm->opt_data[VNET_CRYPTO_OP_##n##_HMAC].desc = CRYPTO_HMAC_STR; \
cm->opt_data[VNET_CRYPTO_OP_##n##_HMAC].active_engine_index = ~0; \
hash_set_mem (cm->ops_handler_index_by_name, CRYPTO_HMAC_STR "-" s, \
VNET_CRYPTO_OP_##n##_HMAC);
foreach_hmac_alg;
#undef _
return 0;
}
VLIB_INIT_FUNCTION (vnet_crypto_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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