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/*
* srv6_t_m_gtp4_dt.c
*
* Copyright (c) 2019 Arrcus Inc 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 <vnet/vnet.h>
#include <vnet/adj/adj.h>
#include <vnet/fib/fib_table.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <srv6-mobile/mobile.h>
srv6_t_main_v4_dt_t srv6_t_main_v4_dt;
static void
clb_dpo_lock_srv6_t_m_gtp4_dt (dpo_id_t * dpo)
{
}
static void
clb_dpo_unlock_srv6_t_m_gtp4_dt (dpo_id_t * dpo)
{
}
static u8 *
clb_dpo_format_srv6_t_m_gtp4_dt (u8 * s, va_list * args)
{
index_t index = va_arg (*args, index_t);
CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
return (format (s, "SR: dynamic_proxy_index:[%u]", index));
}
const static dpo_vft_t dpo_vft = {
.dv_lock = clb_dpo_lock_srv6_t_m_gtp4_dt,
.dv_unlock = clb_dpo_unlock_srv6_t_m_gtp4_dt,
.dv_format = clb_dpo_format_srv6_t_m_gtp4_dt,
};
const static char *const srv6_t_m_gtp4_dt_nodes[] = {
"srv6-t-m-gtp4-dt",
NULL,
};
const static char *const srv6_t_m_gtp4_dt_v6_nodes[] = {
"error-drop",
NULL,
};
const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
[DPO_PROTO_IP6] = srv6_t_m_gtp4_dt_v6_nodes,
[DPO_PROTO_IP4] = srv6_t_m_gtp4_dt_nodes,
};
static u8 fn_name[] = "SRv6-T.M.GTP4.DT-plugin";
static u8 keyword_str[] = "t.m.gtp4.dt";
static u8 def_str[] = "Transit function with DT for IPv4/GTP tunnel";
static u8 param_str[] = "fib-index <index> [local-fib-table <index>]";
static u8 *
clb_format_srv6_t_m_gtp4_dt (u8 * s, va_list * args)
{
srv6_t_gtp4_dt_param_t *ls_mem = va_arg (*args, void *);
s = format (s, "SRv6 Transit gtp4.dt\n\t");
if (ls_mem->type == SRV6_GTP4_DT4)
s = format (s, " Type GTP4.DT4 fib-table %u\n", ls_mem->fib4_index);
else if (ls_mem->type == SRV6_GTP4_DT6)
s = format (s, " Type GTP4.DT6, fib-table %u, local-fib-table %u\n",
ls_mem->fib6_index, ls_mem->local_fib_index);
else if (ls_mem->type == SRV6_GTP4_DT46)
s = format (s, " Type GTP4.DT46, fib-table %u, local-fib-table %u\n",
ls_mem->fib6_index, ls_mem->local_fib_index);
else
s = format (s, "\n");
return s;
}
void
alloc_param_srv6_t_m_gtp4_dt (void **plugin_mem_p, const u32 fib_index,
const u32 local_fib_index, const u8 type)
{
srv6_t_gtp4_dt_param_t *ls_mem;
ls_mem = clib_mem_alloc (sizeof *ls_mem);
clib_memset (ls_mem, 0, sizeof *ls_mem);
*plugin_mem_p = ls_mem;
ls_mem->fib4_index = fib_table_find (FIB_PROTOCOL_IP4, fib_index);
ls_mem->fib6_index = fib_table_find (FIB_PROTOCOL_IP6, fib_index);
if (type == SRV6_GTP4_DT6 || type == SRV6_GTP4_DT46)
{
ls_mem->local_fib_index =
fib_table_find (FIB_PROTOCOL_IP6, local_fib_index);
}
ls_mem->type = type;
}
static uword
clb_unformat_srv6_t_m_gtp4_dt (unformat_input_t * input, va_list * args)
{
void **plugin_mem_p = va_arg (*args, void **);
u32 fib_index = 0;
u32 local_fib_index = 0;
u32 type;
if (unformat (input, "t.m.gtp4.dt4 fib-table %u", &fib_index))
{
type = SRV6_GTP4_DT4;
}
else if (unformat (input, "t.m.gtp4.dt6 fib-table %u local-fib-table %u",
&fib_index, &local_fib_index))
{
type = SRV6_GTP4_DT6;
}
else if (unformat (input, "t.m.gtp4.dt46 fib-table %u local-fib-table %u",
&fib_index, &local_fib_index))
{
type = SRV6_GTP4_DT46;
}
else
{
return 0;
}
alloc_param_srv6_t_m_gtp4_dt (plugin_mem_p, fib_index, local_fib_index,
type);
return 1;
}
static int
clb_creation_srv6_t_m_gtp4_dt (ip6_sr_policy_t * sr_policy)
{
return 0;
}
static int
clb_removal_srv6_t_m_gtp4_dt (ip6_sr_policy_t * sr_policy)
{
srv6_t_gtp4_dt_param_t *ls_mem;
ls_mem = (srv6_t_gtp4_dt_param_t *) sr_policy->plugin_mem;
clib_mem_free (ls_mem);
return 0;
}
static clib_error_t *
srv6_t_m_gtp4_dt_init (vlib_main_t * vm)
{
srv6_t_main_v4_dt_t *sm = &srv6_t_main_v4_dt;
dpo_type_t dpo_type;
vlib_node_t *node;
int rc;
sm->vlib_main = vm;
sm->vnet_main = vnet_get_main ();
node = vlib_get_node_by_name (vm, (u8 *) "srv6-t-m-gtp4-dt");
sm->t_m_gtp4_dt_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
sm->error_node_index = node->index;
dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
rc = sr_policy_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len
&dpo_type,
clb_format_srv6_t_m_gtp4_dt,
clb_unformat_srv6_t_m_gtp4_dt,
clb_creation_srv6_t_m_gtp4_dt,
clb_removal_srv6_t_m_gtp4_dt);
if (rc < 0)
clib_error_return (0, "SRv6 Transit GTP4.DT Policy function"
"couldn't be registered");
return 0;
}
VNET_FEATURE_INIT (srv6_t_m_gtp4_dt, static) =
{
.arc_name = "ip4-unicast",
.node_name = "srv6-t-m-gtp4-dt",
.runs_before = 0,
};
VLIB_INIT_FUNCTION (srv6_t_m_gtp4_dt_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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