diff options
Diffstat (limited to 'src/plugins/l2tp/l2tp_api.c')
| -rw-r--r-- | src/plugins/l2tp/l2tp_api.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/src/plugins/l2tp/l2tp_api.c b/src/plugins/l2tp/l2tp_api.c new file mode 100644 index 00000000000..fb675ddff5e --- /dev/null +++ b/src/plugins/l2tp/l2tp_api.c @@ -0,0 +1,251 @@ +/* + *------------------------------------------------------------------ + * l2tp_api.c - l2tpv3 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 <l2tp/l2tp.h> +#include <vnet/ip/ip_types_api.h> + +/* define message IDs */ +#include <vnet/format_fns.h> +#include <l2tp/l2tp.api_enum.h> +#include <l2tp/l2tp.api_types.h> + +/** + * Base message ID fot the plugin + */ +static u32 l2tp_base_msg_id; +#define REPLY_MSG_ID_BASE l2tp_base_msg_id + +#include <vlibapi/api_helper_macros.h> + +static void +send_sw_if_l2tpv3_tunnel_details (vpe_api_main_t * am, + vl_api_registration_t * reg, + l2t_session_t * s, + l2t_main_t * lm, u32 context) +{ + vl_api_sw_if_l2tpv3_tunnel_details_t *mp; + u8 *if_name = NULL; + vnet_sw_interface_t *si = NULL; + + si = vnet_get_hw_sw_interface (lm->vnet_main, s->hw_if_index); + + if_name = format (if_name, "%U", + format_vnet_sw_interface_name, lm->vnet_main, si); + + mp = vl_msg_api_alloc (sizeof (*mp)); + clib_memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = + ntohs (VL_API_SW_IF_L2TPV3_TUNNEL_DETAILS + REPLY_MSG_ID_BASE); + strncpy ((char *) mp->interface_name, (char *) if_name, + ARRAY_LEN (mp->interface_name) - 1); + mp->sw_if_index = ntohl (si->sw_if_index); + mp->local_session_id = s->local_session_id; + mp->remote_session_id = s->remote_session_id; + mp->local_cookie[0] = s->local_cookie[0]; + mp->local_cookie[1] = s->local_cookie[1]; + mp->remote_cookie = s->remote_cookie; + ip_address_encode ((ip46_address_t *) & s->client_address, IP46_TYPE_IP6, + &mp->client_address); + ip_address_encode ((ip46_address_t *) & s->our_address, IP46_TYPE_IP6, + &mp->our_address); + mp->l2_sublayer_present = s->l2_sublayer_present; + mp->context = context; + + vl_api_send_msg (reg, (u8 *) mp); +} + + +static void +vl_api_sw_if_l2tpv3_tunnel_dump_t_handler (vl_api_sw_if_l2tpv3_tunnel_dump_t * + mp) +{ + vpe_api_main_t *am = &vpe_api_main; + l2t_main_t *lm = &l2t_main; + vl_api_registration_t *reg; + l2t_session_t *session; + + reg = vl_api_client_index_to_registration (mp->client_index); + if (!reg) + return; + + /* *INDENT-OFF* */ + pool_foreach (session, lm->sessions, + ({ + send_sw_if_l2tpv3_tunnel_details (am, reg, session, lm, mp->context); + })); + /* *INDENT-ON* */ +} + +static void vl_api_l2tpv3_create_tunnel_t_handler + (vl_api_l2tpv3_create_tunnel_t * mp) +{ + vl_api_l2tpv3_create_tunnel_reply_t *rmp; + l2t_main_t *lm = &l2t_main; + u32 sw_if_index = (u32) ~ 0; + int rv; + ip46_address_t client, our; + + if (mp->our_address.af == ADDRESS_IP4) + { + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + + u32 encap_fib_index; + + if (mp->encap_vrf_id != ~0) + { + uword *p; + ip6_main_t *im = &ip6_main; + if (! + (p = + hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id)))) + { + rv = VNET_API_ERROR_NO_SUCH_FIB; + goto out; + } + encap_fib_index = p[0]; + } + else + { + encap_fib_index = ~0; + } + + ip_address_decode (&mp->client_address, &client); + ip_address_decode (&mp->our_address, &our); + + rv = create_l2tpv3_ipv6_tunnel (lm, + &client.ip6, + &our.ip6, + ntohl (mp->local_session_id), + ntohl (mp->remote_session_id), + clib_net_to_host_u64 (mp->local_cookie), + clib_net_to_host_u64 (mp->remote_cookie), + mp->l2_sublayer_present, + encap_fib_index, &sw_if_index); + +out: + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_L2TPV3_CREATE_TUNNEL_REPLY, + ({ + rmp->sw_if_index = ntohl (sw_if_index); + })); + /* *INDENT-ON* */ +} + +static void vl_api_l2tpv3_set_tunnel_cookies_t_handler + (vl_api_l2tpv3_set_tunnel_cookies_t * mp) +{ + vl_api_l2tpv3_set_tunnel_cookies_reply_t *rmp; + l2t_main_t *lm = &l2t_main; + int rv; + + VALIDATE_SW_IF_INDEX (mp); + + rv = l2tpv3_set_tunnel_cookies (lm, ntohl (mp->sw_if_index), + clib_net_to_host_u64 (mp->new_local_cookie), + clib_net_to_host_u64 + (mp->new_remote_cookie)); + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_L2TPV3_SET_TUNNEL_COOKIES_REPLY); +} + +static void vl_api_l2tpv3_interface_enable_disable_t_handler + (vl_api_l2tpv3_interface_enable_disable_t * mp) +{ + int rv; + vnet_main_t *vnm = vnet_get_main (); + vl_api_l2tpv3_interface_enable_disable_reply_t *rmp; + + VALIDATE_SW_IF_INDEX (mp); + + rv = l2tpv3_interface_enable_disable + (vnm, ntohl (mp->sw_if_index), mp->enable_disable); + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_L2TPV3_INTERFACE_ENABLE_DISABLE_REPLY); +} + +static void vl_api_l2tpv3_set_lookup_key_t_handler + (vl_api_l2tpv3_set_lookup_key_t * mp) +{ + int rv = 0; + l2t_main_t *lm = &l2t_main; + vl_api_l2tpv3_set_lookup_key_reply_t *rmp; + + if (mp->key > L2T_LOOKUP_KEY_API_SESSION_ID) + { + rv = VNET_API_ERROR_INVALID_VALUE; + goto out; + } + + lm->lookup_type = (ip6_to_l2_lookup_t) mp->key; + +out: + REPLY_MACRO (VL_API_L2TPV3_SET_LOOKUP_KEY_REPLY); +} + +/* + * l2tp_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() + */ +#include <l2tp/l2tp.api.c> + +static clib_error_t * +l2tp_api_hookup (vlib_main_t * vm) +{ + /* + * Set up the (msg_name, crc, message-id) table + */ + l2tp_base_msg_id = setup_message_id_table (); + + return 0; +} + +VLIB_API_INIT_FUNCTION (l2tp_api_hookup); + +#include <vlib/unix/plugin.h> +#include <vpp/app/version.h> + +/* *INDENT-OFF* */ +VLIB_PLUGIN_REGISTER () = { + .version = VPP_BUILD_VER, + .description = "Layer 2 Tunneling Protocol v3 (L2TP)", +}; +/* *INDENT-ON* */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |