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/*
* srv6_end_m_gtp4_e.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/plugin/plugin.h>
#include <vpp/app/version.h>
#include <srv6-mobile/mobile.h>
srv6_end_main_v4_t srv6_end_main_v4;
static void
clb_dpo_lock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}
static void
clb_dpo_unlock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}
static u8 *
clb_dpo_format_srv6_end_m_gtp4_e (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_end_m_gtp4_e,
.dv_unlock = clb_dpo_unlock_srv6_end_m_gtp4_e,
.dv_format = clb_dpo_format_srv6_end_m_gtp4_e,
};
const static char *const srv6_end_m_gtp4_e_nodes[] = {
"srv6-end-m-gtp4-e",
NULL,
};
const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
[DPO_PROTO_IP6] = srv6_end_m_gtp4_e_nodes,
};
static u8 fn_name[] = "SRv6-End.M.GTP4.E-plugin";
static u8 keyword_str[] = "end.m.gtp4.e";
static u8 def_str[] =
"Endpoint function with encapsulation for IPv4/GTP tunnel";
static u8 param_str[] = "";
static u8 *
clb_format_srv6_end_m_gtp4_e (u8 * s, va_list * args)
{
srv6_end_gtp4_e_param_t *ls_mem = va_arg (*args, void *);
s = format (s, "SRv6 End gtp4.e\n");
s = format (s, "\tIPv4 address position: %d\n", ls_mem->v4src_position);
s = format (s, "\tIPv4 source address: %U\n", format_ip4_address,
&ls_mem->v4src_addr);
s = format (s, "\tFib Table %d\n", ls_mem->fib_table);
return s;
}
static uword
clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args)
{
void **plugin_mem_p = va_arg (*args, void **);
srv6_end_gtp4_e_param_t *ls_mem;
ip4_address_t v4src_addr;
u32 v4src_position = 0;
u32 fib_table;
bool config = false;
memset (&v4src_addr, 0, sizeof (ip4_address_t));
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "end.m.gtp4.e v4src_position %d fib-table %d",
&v4src_position, &fib_table))
{
config = true;
}
else if (unformat (input, "end.m.gtp4.e v4src_addr %U fib-table %d",
unformat_ip4_address, &v4src_addr, &fib_table))
{
config = true;
}
else
{
return 0;
}
}
if (!config)
return 0;
ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1);
clib_memset (ls_mem, 0, sizeof *ls_mem);
*plugin_mem_p = ls_mem;
ls_mem->v4src_position = v4src_position;
memcpy (&ls_mem->v4src_addr, &v4src_addr, sizeof (ip4_address_t));
ls_mem->fib_table = fib_table;
ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
return 1;
}
static int
clb_creation_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
return 0;
}
static int
clb_removal_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
srv6_end_gtp4_e_param_t *ls_mem;
ls_mem = localsid->plugin_mem;
clib_mem_free (ls_mem);
return 0;
}
static clib_error_t *
srv6_end_m_gtp4_e_init (vlib_main_t * vm)
{
srv6_end_main_v4_t *sm = &srv6_end_main_v4;
ip4_header_t *ip4 = &sm->cache_hdr.ip4;
udp_header_t *udp = &sm->cache_hdr.udp;
gtpu_header_t *gtpu = &sm->cache_hdr.gtpu;
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-end-m-gtp4-e");
sm->end_m_gtp4_e_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
sm->error_node_index = node->index;
sm->dst_p_len = 32;
sm->src_p_len = 64;
// clear the pre cached packet
clib_memset_u8 (ip4, 0, sizeof (ip4_gtpu_header_t));
// set defaults
ip4->ip_version_and_header_length = 0x45;
ip4->protocol = IP_PROTOCOL_UDP;
ip4->ttl = 64;
udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT);
gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP;
gtpu->type = GTPU_TYPE_GTPU;
//
dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 32, //prefix len
&dpo_type,
clb_format_srv6_end_m_gtp4_e,
clb_unformat_srv6_end_m_gtp4_e,
clb_creation_srv6_end_m_gtp4_e,
clb_removal_srv6_end_m_gtp4_e);
if (rc < 0)
clib_error_return (0, "SRv6 Endpoint GTP4.E LocalSID function"
"couldn't be registered");
return 0;
}
/* *INDENT-OFF* */
VNET_FEATURE_INIT (srv6_end_m_gtp4_e, static) =
{
.arc_name = "ip6-unicast",
.node_name = "srv6-end-m-gtp4-e",
.runs_before = 0,
};
VLIB_INIT_FUNCTION (srv6_end_m_gtp4_e_init);
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "SRv6 GTP Endpoint Functions",
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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