/* * 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_param_t *ls_mem = va_arg (*args, void *); s = format (s, "SRv6 End gtp4.e\n\t"); s = format (s, "IPv4 address position: %d\n", ls_mem->v4src_position); 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_param_t *ls_mem; u32 v4src_position; if (!unformat (input, "end.m.gtp4.e v4src_position %d", &v4src_position)) 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; 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_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: */