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authorNeale Ranns <nranns@cisco.com>2020-09-18 14:05:45 +0000
committerOle Tr�an <otroan@employees.org>2020-09-21 17:03:52 +0000
commit6810a77da36c6750938800314c15e840ee2a8c93 (patch)
tree8527e0fc312e0d3ad21ef6a6579e3b784f53ffc6 /src/plugins/l2tp/l2tp_api.c
parent3f9fdd98463bd926fc78a2b366875c929058e2db (diff)
misc: Move l2tp to plugin
Type: refactor Change-Id: Ifb36eeb146b87e9e305881429d32d6879e955e1e Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/plugins/l2tp/l2tp_api.c')
-rw-r--r--src/plugins/l2tp/l2tp_api.c251
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:
+ */