diff options
Diffstat (limited to 'src/plugins/gre/gre_api.c')
| -rw-r--r-- | src/plugins/gre/gre_api.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/plugins/gre/gre_api.c b/src/plugins/gre/gre_api.c new file mode 100644 index 00000000000..f8e3ea654fc --- /dev/null +++ b/src/plugins/gre/gre_api.c @@ -0,0 +1,218 @@ +/* + *------------------------------------------------------------------ + * 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 <gre/gre.h> +#include <vnet/fib/fib_table.h> +#include <vnet/tunnel/tunnel_types_api.h> +#include <vnet/ip/ip_types_api.h> + +#include <gre/gre.api_enum.h> +#include <gre/gre.api_types.h> + +#define REPLY_MSG_ID_BASE gre_main.msg_id_base +#include <vlibapi/api_helper_macros.h> + +static int +gre_tunnel_type_decode (vl_api_gre_tunnel_type_t in, gre_tunnel_type_t *out) +{ + switch (in) + { +#define _(n, v) \ + case GRE_API_TUNNEL_TYPE_##n: \ + *out = GRE_TUNNEL_TYPE_##n; \ + return (0); + foreach_gre_tunnel_type +#undef _ + } + + return (VNET_API_ERROR_INVALID_VALUE); +} + +static vl_api_gre_tunnel_type_t +gre_tunnel_type_encode (gre_tunnel_type_t in) +{ + vl_api_gre_tunnel_type_t out = GRE_API_TUNNEL_TYPE_L3; + + switch (in) + { +#define _(n, v) \ + case GRE_TUNNEL_TYPE_##n: \ + out = GRE_API_TUNNEL_TYPE_##n; \ + break; + foreach_gre_tunnel_type +#undef _ + } + + return (out); +} + +static void +vl_api_gre_tunnel_add_del_t_handler (vl_api_gre_tunnel_add_del_t *mp) +{ + vnet_gre_tunnel_add_del_args_t _a = {}, *a = &_a; + vl_api_gre_tunnel_add_del_reply_t *rmp; + tunnel_encap_decap_flags_t flags; + u32 sw_if_index = ~0; + ip46_type_t itype[2]; + int rv = 0; + + itype[0] = ip_address_decode (&mp->tunnel.src, &a->src); + itype[1] = ip_address_decode (&mp->tunnel.dst, &a->dst); + + if (itype[0] != itype[1]) + { + rv = VNET_API_ERROR_INVALID_PROTOCOL; + goto out; + } + + if (ip46_address_is_equal (&a->src, &a->dst)) + { + rv = VNET_API_ERROR_SAME_SRC_DST; + goto out; + } + + rv = gre_tunnel_type_decode (mp->tunnel.type, &a->type); + + if (rv) + goto out; + + rv = tunnel_mode_decode (mp->tunnel.mode, &a->mode); + + if (rv) + goto out; + + rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags); + + if (rv) + goto out; + + a->is_add = mp->is_add; + a->is_ipv6 = (itype[0] == IP46_TYPE_IP6); + a->instance = ntohl (mp->tunnel.instance); + a->session_id = ntohs (mp->tunnel.session_id); + a->outer_table_id = ntohl (mp->tunnel.outer_table_id); + a->flags = flags; + + rv = vnet_gre_tunnel_add_del (a, &sw_if_index); + +out: + /* *INDENT-OFF* */ + REPLY_MACRO2 (VL_API_GRE_TUNNEL_ADD_DEL_REPLY, + ({ rmp->sw_if_index = ntohl (sw_if_index); })); + /* *INDENT-ON* */ +} + +static void +send_gre_tunnel_details (gre_tunnel_t *t, vl_api_gre_tunnel_dump_t *mp) +{ + vl_api_gre_tunnel_details_t *rmp; + + /* *INDENT-OFF* */ + REPLY_MACRO_DETAILS2 ( + VL_API_GRE_TUNNEL_DETAILS, ({ + ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src); + ip_address_encode (&t->tunnel_dst.fp_addr, IP46_TYPE_ANY, + &rmp->tunnel.dst); + + rmp->tunnel.outer_table_id = htonl ( + fib_table_get_table_id (t->outer_fib_index, t->tunnel_dst.fp_proto)); + + rmp->tunnel.type = gre_tunnel_type_encode (t->type); + rmp->tunnel.mode = tunnel_mode_encode (t->mode); + rmp->tunnel.flags = tunnel_encap_decap_flags_encode (t->flags); + rmp->tunnel.instance = htonl (t->user_instance); + rmp->tunnel.sw_if_index = htonl (t->sw_if_index); + rmp->tunnel.session_id = htons (t->session_id); + })); + /* *INDENT-ON* */ +} + +static void +vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t *mp) +{ + vl_api_registration_t *reg; + gre_main_t *gm = &gre_main; + gre_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, gm->tunnels) + { + send_gre_tunnel_details (t, mp); + } + /* *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, mp); + } +} + +/* + * gre_api_hookup + * Add vpe's API message handlers to the table. + * vlib has already mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +/* API definitions */ +#include <vnet/format_fns.h> +#include <gre/gre.api.c> + +static clib_error_t * +gre_api_hookup (vlib_main_t *vm) +{ + /* + * Set up the (msg_name, crc, message-id) table + */ + gre_main.msg_id_base = setup_message_id_table (); + + return 0; +} + +VLIB_API_INIT_FUNCTION (gre_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |