/* *------------------------------------------------------------------ * gtpu_api.c - gtpu api * * Copyright (c) 2017 Intel 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/interface.h> #include <vnet/api_errno.h> #include <vnet/feature/feature.h> #include <vnet/fib/fib_table.h> #include <vppinfra/byte_order.h> #include <vlibmemory/api.h> #include <vnet/ip/ip_types_api.h> #include <gtpu/gtpu.h> #include <vnet/format_fns.h> #include <gtpu/gtpu.api_enum.h> #include <gtpu/gtpu.api_types.h> #define REPLY_MSG_ID_BASE gtm->msg_id_base #include <vlibapi/api_helper_macros.h> static void vl_api_gtpu_offload_rx_t_handler (vl_api_gtpu_offload_rx_t * mp) { vl_api_gtpu_offload_rx_reply_t *rmp; int rv = 0; vl_api_interface_index_t hw_if_index = ntohl (mp->hw_if_index); vl_api_interface_index_t sw_if_index = ntohl (mp->sw_if_index); if (!vnet_hw_interface_is_valid (vnet_get_main (), hw_if_index)) { rv = VNET_API_ERROR_NO_SUCH_ENTRY; goto err; } VALIDATE_SW_IF_INDEX (mp); u32 t_index = vnet_gtpu_get_tunnel_index (sw_if_index); if (t_index == ~0) { rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2; goto err; } gtpu_main_t *gtm = >pu_main; gtpu_tunnel_t *t = pool_elt_at_index (gtm->tunnels, t_index); if (!ip46_address_is_ip4 (&t->dst)) { rv = VNET_API_ERROR_INVALID_ADDRESS_FAMILY; goto err; } if ((t->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) && (t->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT)) { rv = VNET_API_ERROR_INVALID_ADDRESS_FAMILY; goto err; } vnet_main_t *vnm = vnet_get_main (); vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index); ip4_main_t *im = &ip4_main; u32 rx_fib_index = vec_elt (im->fib_index_by_sw_if_index, hw_if->sw_if_index); if (t->encap_fib_index != rx_fib_index) { rv = VNET_API_ERROR_NO_SUCH_FIB; goto err; } if (vnet_gtpu_add_del_rx_flow (hw_if_index, t_index, mp->enable)) { rv = VNET_API_ERROR_UNSPECIFIED; goto err; } BAD_SW_IF_INDEX_LABEL; err: REPLY_MACRO (VL_API_GTPU_OFFLOAD_RX_REPLY); } static void vl_api_sw_interface_set_gtpu_bypass_t_handler (vl_api_sw_interface_set_gtpu_bypass_t * mp) { vl_api_sw_interface_set_gtpu_bypass_reply_t *rmp; int rv = 0; u32 sw_if_index = ntohl (mp->sw_if_index); gtpu_main_t *gtm = >pu_main; VALIDATE_SW_IF_INDEX (mp); vnet_int_gtpu_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SW_INTERFACE_SET_GTPU_BYPASS_REPLY); } static void vl_api_gtpu_add_del_tunnel_t_handler (vl_api_gtpu_add_del_tunnel_t * mp) { vl_api_gtpu_add_del_tunnel_reply_t *rmp; int rv = 0; gtpu_main_t *gtm = >pu_main; vnet_gtpu_add_mod_del_tunnel_args_t a = { .opn = mp->is_add ? GTPU_ADD_TUNNEL : GTPU_DEL_TUNNEL, .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index), .decap_next_index = ntohl (mp->decap_next_index), .teid = ntohl (mp->teid), .tteid = ntohl (mp->tteid), }; ip_address_decode (&mp->dst_address, &a.dst); ip_address_decode (&mp->src_address, &a.src); u8 is_ipv6 = !ip46_address_is_ip4 (&a.dst); a.encap_fib_index = fib_table_find (fib_ip_proto (is_ipv6), ntohl (mp->encap_vrf_id)); if (a.encap_fib_index == ~0) { rv = VNET_API_ERROR_NO_SUCH_FIB; goto out; } /* Check src & dst are different */ if (ip46_address_cmp (&a.dst, &a.src) == 0) { rv = VNET_API_ERROR_SAME_SRC_DST; goto out; } if (ip46_address_is_multicast (&a.dst) && !vnet_sw_if_index_is_api_valid (a.mcast_sw_if_index)) { rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; goto out; } u32 sw_if_index = ~0; rv = vnet_gtpu_add_mod_del_tunnel (&a, &sw_if_index); out: /* *INDENT-OFF* */ REPLY_MACRO2(VL_API_GTPU_ADD_DEL_TUNNEL_REPLY, ({ rmp->sw_if_index = ntohl (sw_if_index); })); /* *INDENT-ON* */ } static void vl_api_gtpu_tunnel_update_tteid_t_handler (vl_api_gtpu_tunnel_update_tteid_t * mp) { vl_api_gtpu_tunnel_update_tteid_reply_t *rmp; int rv = 0; gtpu_main_t *gtm = >pu_main; vnet_gtpu_add_mod_del_tunnel_args_t a = { .opn = GTPU_UPD_TTEID, .teid = ntohl (mp->teid), .tteid = ntohl (mp->tteid), }; ip_address_decode (&mp->dst_address, &a.dst); u8 is_ipv6 = !ip46_address_is_ip4 (&a.dst); a.encap_fib_index = fib_table_find (fib_ip_proto (is_ipv6), ntohl (mp->encap_vrf_id)); if (a.encap_fib_index == ~0) { rv = VNET_API_ERROR_NO_SUCH_FIB; goto out; } rv = vnet_gtpu_add_mod_del_tunnel (&a, 0); out: REPLY_MACRO (VL_API_GTPU_TUNNEL_UPDATE_TTEID_REPLY); } static void send_gtpu_tunnel_details (gtpu_tunnel_t * t, vl_api_registration_t * reg, u32 context) { vl_api_gtpu_tunnel_details_t *rmp; gtpu_main_t *gtm = >pu_main; ip4_main_t *im4 = &ip4_main; ip6_main_t *im6 = &ip6_main; u8 is_ipv6 = !ip46_address_is_ip4 (&t->dst); rmp = vl_msg_api_alloc (sizeof (*rmp)); clib_memset (rmp, 0, sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_GTPU_TUNNEL_DETAILS + gtm->msg_id_base); ip_address_encode (&t->src, is_ipv6 ? IP46_TYPE_IP6 : IP46_TYPE_IP4, &rmp->src_address); ip_address_encode (&t->dst, is_ipv6 ? IP46_TYPE_IP6 : IP46_TYPE_IP4, &rmp->dst_address); rmp->encap_vrf_id = is_ipv6 ? htonl (im6->fibs[t->encap_fib_index].ft_table_id) : htonl (im4->fibs[t->encap_fib_index].ft_table_id); rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index); rmp->teid = htonl (t->teid); rmp->tteid = htonl (t->tteid); rmp->decap_next_index = htonl (t->decap_next_index); rmp->sw_if_index = htonl (t->sw_if_index); rmp->context = context; vl_api_send_msg (reg, (u8 *) rmp); } static void vl_api_gtpu_tunnel_dump_t_handler (vl_api_gtpu_tunnel_dump_t * mp) { vl_api_registration_t *reg; gtpu_main_t *gtm = >pu_main; gtpu_tunnel_t *t; u32 sw_if_index; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; sw_if_index = ntohl (mp->sw_if_index); if (~0 == sw_if_index) { /* *INDENT-OFF* */ pool_foreach (t, gtm->tunnels) { send_gtpu_tunnel_details(t, reg, mp->context); } /* *INDENT-ON* */ } else { if ((sw_if_index >= vec_len (gtm->tunnel_index_by_sw_if_index)) || (~0 == gtm->tunnel_index_by_sw_if_index[sw_if_index])) { return; } t = >m->tunnels[gtm->tunnel_index_by_sw_if_index[sw_if_index]]; send_gtpu_tunnel_details (t, reg, mp->context); } } #include <gtpu/gtpu.api.c> static clib_error_t * gtpu_api_hookup (vlib_main_t * vm) { gtpu_main_t *gtm = >pu_main; gtm->msg_id_base = setup_message_id_table (); return 0; } VLIB_API_INIT_FUNCTION (gtpu_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */