diff options
Diffstat (limited to 'src/vnet/gre/gre_api.c')
| -rw-r--r-- | src/vnet/gre/gre_api.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/vnet/gre/gre_api.c b/src/vnet/gre/gre_api.c new file mode 100644 index 00000000000..333838c06ad --- /dev/null +++ b/src/vnet/gre/gre_api.c @@ -0,0 +1,204 @@ +/* + *------------------------------------------------------------------ + * gre_api.c - gre 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/vnet.h> +#include <vlibmemory/api.h> + +#include <vnet/interface.h> +#include <vnet/api_errno.h> + +#include <vnet/gre/gre.h> +#include <vnet/fib/fib_table.h> + +#include <vnet/vnet_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include <vnet/vnet_all_api_h.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 <vnet/vnet_all_api_h.h> +#undef vl_printfun + +#include <vlibapi/api_helper_macros.h> + +#define foreach_vpe_api_msg \ +_(GRE_ADD_DEL_TUNNEL, gre_add_del_tunnel) \ +_(GRE_TUNNEL_DUMP, gre_tunnel_dump) + +static void vl_api_gre_add_del_tunnel_t_handler + (vl_api_gre_add_del_tunnel_t * mp) +{ + vl_api_gre_add_del_tunnel_reply_t *rmp; + int rv = 0; + vnet_gre_add_del_tunnel_args_t _a, *a = &_a; + u32 outer_fib_id; + uword *p; + ip4_main_t *im = &ip4_main; + u32 sw_if_index = ~0; + + p = hash_get (im->fib_index_by_table_id, ntohl (mp->outer_fib_id)); + if (!p) + { + rv = VNET_API_ERROR_NO_SUCH_FIB; + goto out; + } + outer_fib_id = p[0]; + + /* Check src & dst are different */ + if ((mp->is_ipv6 && memcmp (mp->src_address, mp->dst_address, 16) == 0) || + (!mp->is_ipv6 && memcmp (mp->src_address, mp->dst_address, 4) == 0)) + { + rv = VNET_API_ERROR_SAME_SRC_DST; + goto out; + } + memset (a, 0, sizeof (*a)); + + a->is_add = mp->is_add; + a->teb = mp->teb; + + /* ip addresses sent in network byte order */ + clib_memcpy (&(a->src), mp->src_address, 4); + clib_memcpy (&(a->dst), mp->dst_address, 4); + + a->outer_fib_id = outer_fib_id; + rv = vnet_gre_add_del_tunnel (a, &sw_if_index); + +out: + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_GRE_ADD_DEL_TUNNEL_REPLY, + ({ + rmp->sw_if_index = ntohl (sw_if_index); + })); + /* *INDENT-ON* */ +} + +static void send_gre_tunnel_details + (gre_tunnel_t * t, unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_gre_tunnel_details_t *rmp; + ip4_main_t *im = &ip4_main; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_GRE_TUNNEL_DETAILS); + clib_memcpy (rmp->src_address, &(t->tunnel_src), 4); + clib_memcpy (rmp->dst_address, &(t->tunnel_dst), 4); + rmp->outer_fib_id = htonl (im->fibs[t->outer_fib_index].ft_table_id); + rmp->teb = (GRE_TUNNEL_TYPE_TEB == t->type); + rmp->sw_if_index = htonl (t->sw_if_index); + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + gre_main_t *gm = &gre_main; + gre_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, gm->tunnels, + ({ + send_gre_tunnel_details(t, q, mp->context); + })); + /* *INDENT-ON* */ + } + else + { + if ((sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) || + (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) + { + return; + } + t = &gm->tunnels[gm->tunnel_index_by_sw_if_index[sw_if_index]]; + send_gre_tunnel_details (t, q, mp->context); + } +} + +/* + * gre_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include <vnet/vnet_all_api_h.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (api_main_t * am) +{ +#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); + foreach_vl_msg_name_crc_gre; +#undef _ +} + +static clib_error_t * +gre_api_hookup (vlib_main_t * vm) +{ + api_main_t *am = &api_main; + +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #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_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (gre_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |