diff options
Diffstat (limited to 'src/plugins/srv6-mobile/gtp4_dt.c')
| -rw-r--r-- | src/plugins/srv6-mobile/gtp4_dt.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/plugins/srv6-mobile/gtp4_dt.c b/src/plugins/srv6-mobile/gtp4_dt.c new file mode 100644 index 00000000000..44a4af34c2f --- /dev/null +++ b/src/plugins/srv6-mobile/gtp4_dt.c @@ -0,0 +1,205 @@ +/* + * 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; +} + +static uword +clb_unformat_srv6_t_m_gtp4_dt (unformat_input_t * input, va_list * args) +{ + void **plugin_mem_p = va_arg (*args, void **); + srv6_t_gtp4_dt_param_t *ls_mem; + 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; + } + + 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->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; + + 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; +} + +/* *INDENT-OFF* */ +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); +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |