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/*
* Copyright (c) 2017 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 <nat/dslite.h>
#include <nat/dslite_dpo.h>
#include <vnet/fib/fib_table.h>
dslite_main_t dslite_main;
void
dslite_init (vlib_main_t * vm)
{
dslite_main_t *dm = &dslite_main;
vlib_thread_registration_t *tr;
vlib_thread_main_t *tm = vlib_get_thread_main ();
uword *p;
dslite_per_thread_data_t *td;
u32 translation_buckets = 1024;
u32 translation_memory_size = 128 << 20;
u32 b4_buckets = 128;
u32 b4_memory_size = 64 << 20;
dm->first_worker_index = 0;
dm->num_workers = 0;
p = hash_get_mem (tm->thread_registrations_by_name, "workers");
if (p)
{
tr = (vlib_thread_registration_t *) p[0];
if (tr)
{
dm->num_workers = tr->count;
dm->first_worker_index = tr->first_index;
}
}
if (dm->num_workers)
dm->port_per_thread = (0xffff - 1024) / dm->num_workers;
else
dm->port_per_thread = 0xffff - 1024;
vec_validate (dm->per_thread_data, tm->n_vlib_mains - 1);
/* *INDENT-OFF* */
vec_foreach (td, dm->per_thread_data)
{
clib_bihash_init_24_8 (&td->in2out, "in2out", translation_buckets,
translation_memory_size);
clib_bihash_init_8_8 (&td->out2in, "out2in", translation_buckets,
translation_memory_size);
clib_bihash_init_16_8 (&td->b4_hash, "b4s", b4_buckets, b4_memory_size);
}
/* *INDENT-ON* */
dslite_dpo_module_init ();
}
int
dslite_set_aftr_ip6_addr (dslite_main_t * dm, ip6_address_t * addr)
{
dpo_id_t dpo_v6 = DPO_INVALID;
dslite_dpo_create (DPO_PROTO_IP6, 0, &dpo_v6);
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP6,
.fp_len = 128,
.fp_addr.ip6.as_u64[0] = addr->as_u64[0],
.fp_addr.ip6.as_u64[1] = addr->as_u64[1],
};
fib_table_entry_special_dpo_add (0, &pfx, FIB_SOURCE_PLUGIN_HI,
FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v6);
dpo_reset (&dpo_v6);
dm->aftr_ip6_addr.as_u64[0] = addr->as_u64[0];
dm->aftr_ip6_addr.as_u64[1] = addr->as_u64[1];
return 0;
}
int
dslite_add_del_pool_addr (dslite_main_t * dm, ip4_address_t * addr, u8 is_add)
{
vlib_thread_main_t *tm = vlib_get_thread_main ();
snat_address_t *a = 0;
int i = 0;
dpo_id_t dpo_v4 = DPO_INVALID;
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP4,
.fp_len = 32,
.fp_addr.ip4.as_u32 = addr->as_u32,
};
for (i = 0; i < vec_len (dm->addr_pool); i++)
{
if (dm->addr_pool[i].addr.as_u32 == addr->as_u32)
{
a = dm->addr_pool + i;
break;
}
}
if (is_add)
{
if (a)
return VNET_API_ERROR_VALUE_EXIST;
vec_add2 (dm->addr_pool, a, 1);
a->addr = *addr;
#define _(N, i, n, s) \
clib_bitmap_alloc (a->busy_##n##_port_bitmap, 65535); \
a->busy_##n##_ports = 0; \
vec_validate_init_empty (a->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
foreach_snat_protocol
#undef _
dslite_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4);
fib_table_entry_special_dpo_add (0, &pfx, FIB_SOURCE_PLUGIN_HI,
FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
dpo_reset (&dpo_v4);
}
else
{
if (!a)
return VNET_API_ERROR_NO_SUCH_ENTRY;
#define _(N, id, n, s) \
clib_bitmap_free (a->busy_##n##_port_bitmap); \
vec_free (a->busy_##n##_ports_per_thread);
foreach_snat_protocol
#undef _
fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_PLUGIN_HI);
vec_del1 (dm->addr_pool, i);
}
return 0;
}
u8 *
format_dslite_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
dslite_trace_t *t = va_arg (*args, dslite_trace_t *);
s =
format (s, "next index %d, session %d", t->next_index, t->session_index);
return s;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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