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/*
* Copyright (c) 2020 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 <cnat/cnat_types.h>
cnat_main_t cnat_main;
fib_source_t cnat_fib_source;
cnat_timestamp_t *cnat_timestamps;
throttle_t cnat_throttle;
char *cnat_error_strings[] = {
#define cnat_error(n,s) s,
#include <cnat/cnat_error.def>
#undef cnat_error
};
uword
unformat_cnat_ep (unformat_input_t * input, va_list * args)
{
cnat_endpoint_t *a = va_arg (*args, cnat_endpoint_t *);
int port = 0;
clib_memset (a, 0, sizeof (*a));
if (unformat (input, "%U %d", unformat_ip_address, &a->ce_ip, &port))
;
else if (unformat_user (input, unformat_ip_address, &a->ce_ip))
;
else if (unformat (input, "%d", &port))
;
else
return 0;
a->ce_port = (u16) port;
return 1;
}
uword
unformat_cnat_ep_tuple (unformat_input_t * input, va_list * args)
{
cnat_endpoint_tuple_t *a = va_arg (*args, cnat_endpoint_tuple_t *);
if (unformat (input, "%U->%U", unformat_cnat_ep, &a->src_ep,
unformat_cnat_ep, &a->dst_ep))
;
else if (unformat (input, "->%U", unformat_cnat_ep, &a->dst_ep))
;
else if (unformat (input, "%U->", unformat_cnat_ep, &a->src_ep))
;
else
return 0;
return 1;
}
u8 *
format_cnat_endpoint (u8 * s, va_list * args)
{
cnat_endpoint_t *cep = va_arg (*args, cnat_endpoint_t *);
s = format (s, "%U;%d", format_ip_address, &cep->ce_ip, cep->ce_port);
return (s);
}
static clib_error_t *
cnat_types_init (vlib_main_t * vm)
{
vlib_thread_main_t *tm = &vlib_thread_main;
u32 n_vlib_mains = tm->n_vlib_mains;
cnat_fib_source = fib_source_allocate ("cnat",
CNAT_FIB_SOURCE_PRIORITY,
FIB_SOURCE_BH_SIMPLE);
clib_rwlock_init (&cnat_main.ts_lock);
clib_spinlock_init (&cnat_main.src_ports_lock);
clib_bitmap_validate (cnat_main.src_ports, UINT16_MAX);
throttle_init (&cnat_throttle, n_vlib_mains, 1e-3);
return (NULL);
}
static clib_error_t *
cnat_config (vlib_main_t * vm, unformat_input_t * input)
{
cnat_main_t *cm = &cnat_main;
cm->session_hash_memory = CNAT_DEFAULT_SESSION_MEMORY;
cm->session_hash_buckets = CNAT_DEFAULT_SESSION_BUCKETS;
cm->translation_hash_memory = CNAT_DEFAULT_TRANSLATION_MEMORY;
cm->translation_hash_buckets = CNAT_DEFAULT_TRANSLATION_BUCKETS;
cm->snat_hash_memory = CNAT_DEFAULT_SNAT_MEMORY;
cm->snat_hash_buckets = CNAT_DEFAULT_SNAT_BUCKETS;
cm->scanner_timeout = CNAT_DEFAULT_SCANNER_TIMEOUT;
cm->session_max_age = CNAT_DEFAULT_SESSION_MAX_AGE;
cm->tcp_max_age = CNAT_DEFAULT_TCP_MAX_AGE;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat
(input, "session-db-buckets %u", &cm->session_hash_buckets))
;
else if (unformat (input, "session-db-memory %U",
unformat_memory_size, &cm->session_hash_memory))
;
else if (unformat (input, "translation-db-buckets %u",
&cm->translation_hash_buckets))
;
else if (unformat (input, "translation-db-memory %U",
unformat_memory_size, &cm->translation_hash_memory))
;
else if (unformat (input, "snat-db-buckets %u", &cm->snat_hash_buckets))
;
else if (unformat (input, "snat-db-memory %U",
unformat_memory_size, &cm->snat_hash_memory))
;
else if (unformat (input, "session-cleanup-timeout %f",
&cm->scanner_timeout))
;
else if (unformat (input, "session-max-age %u", &cm->session_max_age))
;
else if (unformat (input, "tcp-max-age %u", &cm->tcp_max_age))
;
else
return clib_error_return (0, "unknown input '%U'",
format_unformat_error, input);
}
return 0;
}
VLIB_EARLY_CONFIG_FUNCTION (cnat_config, "cnat");
VLIB_INIT_FUNCTION (cnat_types_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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