diff options
Diffstat (limited to 'src/plugins/gtpu/gtpu_api.c')
| -rw-r--r-- | src/plugins/gtpu/gtpu_api.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/plugins/gtpu/gtpu_api.c b/src/plugins/gtpu/gtpu_api.c new file mode 100644 index 00000000000..58f48c71e0d --- /dev/null +++ b/src/plugins/gtpu/gtpu_api.c @@ -0,0 +1,256 @@ +/* + *------------------------------------------------------------------ + * gtpu_api.c - gtpu api + * + * Copyright (c) 2016 Cisco 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 <vlibsocket/api.h> + +#include <gtpu/gtpu.h> + + +#define vl_msg_id(n,h) n, +typedef enum +{ +#include <gtpu/gtpu.api.h> + /* We'll want to know how many messages IDs we need... */ + VL_MSG_FIRST_AVAILABLE, +} vl_msg_id_t; +#undef vl_msg_id + +/* define message structures */ +#define vl_typedefs +#include <gtpu/gtpu.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <gtpu/gtpu.api.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <gtpu/gtpu.api.h> +#undef vl_printfun + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <gtpu/gtpu.api.h> +#undef vl_api_version + +#define vl_msg_name_crc_list +#include <gtpu/gtpu.api.h> +#undef vl_msg_name_crc_list + +#define REPLY_MSG_ID_BASE gtm->msg_id_base +#include <vlibapi/api_helper_macros.h> + +static void +setup_message_id_table (gtpu_main_t * gtm, api_main_t * am) +{ +#define _(id,n,crc) \ + vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + gtm->msg_id_base); + foreach_vl_msg_name_crc_gtpu; +#undef _ +} + +#define foreach_gtpu_plugin_api_msg \ +_(SW_INTERFACE_SET_GTPU_BYPASS, sw_interface_set_gtpu_bypass) \ +_(GTPU_ADD_DEL_TUNNEL, gtpu_add_del_tunnel) \ +_(GTPU_TUNNEL_DUMP, gtpu_tunnel_dump) + +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; + ip4_main_t *im = &ip4_main; + gtpu_main_t *gtm = >pu_main; + + uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id)); + if (!p) + { + rv = VNET_API_ERROR_NO_SUCH_FIB; + goto out; + } + + vnet_gtpu_add_del_tunnel_args_t a = { + .is_add = mp->is_add, + .is_ip6 = mp->is_ipv6, + .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index), + .encap_fib_index = p[0], + .decap_next_index = ntohl (mp->decap_next_index), + .teid = ntohl (mp->teid), + .dst = to_ip46 (mp->is_ipv6, mp->dst_address), + .src = to_ip46 (mp->is_ipv6, mp->src_address), + }; + + /* 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_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 send_gtpu_tunnel_details + (gtpu_tunnel_t * t, unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_gtpu_tunnel_details_t *rmp; + 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)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_GTPU_TUNNEL_DETAILS); + if (is_ipv6) + { + memcpy (rmp->src_address, t->src.ip6.as_u8, 16); + memcpy (rmp->dst_address, t->dst.ip6.as_u8, 16); + rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id); + } + else + { + memcpy (rmp->src_address, t->src.ip4.as_u8, 4); + memcpy (rmp->dst_address, t->dst.ip4.as_u8, 4); + rmp->encap_vrf_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->decap_next_index = htonl (t->decap_next_index); + rmp->sw_if_index = htonl (t->sw_if_index); + rmp->is_ipv6 = is_ipv6; + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_gtpu_tunnel_dump_t_handler (vl_api_gtpu_tunnel_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + gtpu_main_t *gtm = >pu_main; + gtpu_tunnel_t *t; + u32 sw_if_index; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + 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, q, 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, q, mp->context); + } +} + + +static clib_error_t * +gtpu_api_hookup (vlib_main_t * vm) +{ + gtpu_main_t *gtm = >pu_main; + + u8 *name = format (0, "gtpu_%08x%c", api_version, 0); + gtm->msg_id_base = vl_msg_api_get_msg_ids + ((char *) name, VL_MSG_FIRST_AVAILABLE); + +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + gtm->msg_id_base), \ + #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_gtpu_plugin_api_msg; +#undef _ + + /* Add our API messages to the global name_crc hash table */ + setup_message_id_table (gtm, &api_main); + + return 0; +} + +VLIB_API_INIT_FUNCTION (gtpu_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |