--- /dev/null
+/*
+ * l2tp.c : L2TPv3 tunnel support
+ *
+ * Copyright (c) 2013 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 <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/l2tp/l2tp.h>
+
+l2t_main_t l2t_main;
+
+/* packet trace format function */
+u8 *
+format_l2t_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ l2t_trace_t *t = va_arg (*args, l2t_trace_t *);
+
+ if (t->is_user_to_network)
+ s = format (s, "L2T: %U (client) -> %U (our) session %d",
+ format_ip6_address, &t->client_address,
+ format_ip6_address, &t->our_address, t->session_index);
+ else
+ s = format (s, "L2T: %U (our) -> %U (client) session %d)",
+ format_ip6_address, &t->our_address,
+ format_ip6_address, &t->client_address, t->session_index);
+ return s;
+}
+
+u8 *
+format_l2t_session (u8 * s, va_list * args)
+{
+ l2t_session_t *session = va_arg (*args, l2t_session_t *);
+ l2t_main_t *lm = &l2t_main;
+ u32 counter_index;
+ vlib_counter_t v;
+
+ s = format (s, "[%d] %U (our) %U (client) %U (sw_if_index %d)\n",
+ session - lm->sessions,
+ format_ip6_address, &session->our_address,
+ format_ip6_address, &session->client_address,
+ format_vnet_sw_interface_name, lm->vnet_main,
+ vnet_get_sw_interface (lm->vnet_main, session->sw_if_index),
+ session->sw_if_index);
+
+ s = format (s, " local cookies %016llx %016llx remote cookie %016llx\n",
+ clib_net_to_host_u64 (session->local_cookie[0]),
+ clib_net_to_host_u64 (session->local_cookie[1]),
+ clib_net_to_host_u64 (session->remote_cookie));
+
+ s = format (s, " local session-id %d remote session-id %d\n",
+ clib_net_to_host_u32 (session->local_session_id),
+ clib_net_to_host_u32 (session->remote_session_id));
+
+ s = format (s, " l2 specific sublayer %s\n",
+ session->l2_sublayer_present ? "preset" : "absent");
+
+ counter_index =
+ session_index_to_counter_index (session - lm->sessions,
+ SESSION_COUNTER_USER_TO_NETWORK);
+
+ vlib_get_combined_counter (&lm->counter_main, counter_index, &v);
+ if (v.packets != 0)
+ s = format (s, " user-to-net: %llu pkts %llu bytes\n",
+ v.packets, v.bytes);
+
+ vlib_get_combined_counter (&lm->counter_main, counter_index + 1, &v);
+
+ if (v.packets != 0)
+ s = format (s, " net-to-user: %llu pkts %llu bytes\n",
+ v.packets, v.bytes);
+ return s;
+}
+
+static clib_error_t *
+show_l2tp_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ l2t_session_t *session;
+ l2t_main_t *lm = &l2t_main;
+ char *keystr = 0;
+ int verbose = 0;
+
+ if (unformat (input, "verbose") || unformat (input, "v"))
+ verbose = 1;
+
+ if (pool_elts (lm->sessions) == 0)
+ vlib_cli_output (vm, "No l2tp sessions...");
+ else
+ vlib_cli_output (vm, "%u l2tp sessions...", pool_elts (lm->sessions));
+
+ if (verbose)
+ {
+ switch (lm->lookup_type)
+ {
+ case L2T_LOOKUP_SRC_ADDRESS:
+ keystr = "src address";
+ break;
+
+ case L2T_LOOKUP_DST_ADDRESS:
+ keystr = "dst address";
+ break;
+
+ case L2T_LOOKUP_SESSION_ID:
+ keystr = "session id";
+ break;
+
+ default:
+ keystr = "BOGUS!";
+ break;
+ }
+
+ vlib_cli_output (vm, "L2tp session lookup on %s", keystr);
+
+ /* *INDENT-OFF* */
+ pool_foreach (session, lm->sessions,
+ ({
+ vlib_cli_output (vm, "%U", format_l2t_session, session);
+ }));
+ /* *INDENT-ON* */
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_session_detail_command, static) = {
+ .path = "show l2tpv3",
+ .short_help = "show l2tpv3 [verbose]",
+ .function = show_l2tp_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+test_counters_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ l2t_session_t *session;
+ l2t_main_t *lm = &l2t_main;
+ u32 session_index;
+ u32 counter_index;
+ u32 nincr = 0;
+ u32 cpu_index = os_get_cpu_number ();
+
+ /* *INDENT-OFF* */
+ pool_foreach (session, lm->sessions,
+ ({
+ session_index = session - lm->sessions;
+ counter_index =
+ session_index_to_counter_index (session_index,
+ SESSION_COUNTER_USER_TO_NETWORK);
+ vlib_increment_combined_counter (&lm->counter_main,
+ cpu_index,
+ counter_index,
+ 1/*pkt*/, 1111 /*bytes*/);
+ vlib_increment_combined_counter (&lm->counter_main,
+ cpu_index,
+ counter_index+1,
+ 1/*pkt*/, 2222 /*bytes*/);
+ nincr++;
+
+ }));
+ /* *INDENT-ON* */
+ vlib_cli_output (vm, "Incremented %d active counters\n", nincr);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_counters_command, static) = {
+ .path = "test counters",
+ .short_help = "increment all active counters",
+ .function = test_counters_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+clear_counters_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ l2t_session_t *session;
+ l2t_main_t *lm = &l2t_main;
+ u32 session_index;
+ u32 counter_index;
+ u32 nincr = 0;
+
+ /* *INDENT-OFF* */
+ pool_foreach (session, lm->sessions,
+ ({
+ session_index = session - lm->sessions;
+ counter_index =
+ session_index_to_counter_index (session_index,
+ SESSION_COUNTER_USER_TO_NETWORK);
+ vlib_zero_combined_counter (&lm->counter_main, counter_index);
+ vlib_zero_combined_counter (&lm->counter_main, counter_index+1);
+ nincr++;
+ }));
+ /* *INDENT-ON* */
+ vlib_cli_output (vm, "Cleared %d active counters\n", nincr);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (clear_counters_command, static) = {
+ .path = "clear counters",
+ .short_help = "clear all active counters",
+ .function = clear_counters_command_fn,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_l2tpv3_name (u8 * s, va_list * args)
+{
+ l2t_main_t *lm = &l2t_main;
+ u32 i = va_arg (*args, u32);
+ u32 show_dev_instance = ~0;
+
+ if (i < vec_len (lm->dev_inst_by_real))
+ show_dev_instance = lm->dev_inst_by_real[i];
+
+ if (show_dev_instance != ~0)
+ i = show_dev_instance;
+
+ return format (s, "l2tpv3_tunnel%d", i);
+}
+
+static int
+l2tpv3_name_renumber (vnet_hw_interface_t * hi, u32 new_dev_instance)
+{
+ l2t_main_t *lm = &l2t_main;
+
+ vec_validate_init_empty (lm->dev_inst_by_real, hi->dev_instance, ~0);
+
+ lm->dev_inst_by_real[hi->dev_instance] = new_dev_instance;
+
+ return 0;
+}
+
+static uword
+dummy_interface_tx (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ clib_warning ("you shouldn't be here, leaking buffers...");
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VNET_DEVICE_CLASS (l2tpv3_device_class,static) = {
+ .name = "L2TPv3",
+ .format_device_name = format_l2tpv3_name,
+ .name_renumber = l2tpv3_name_renumber,
+ .tx_function = dummy_interface_tx,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_l2tp_header_with_length (u8 * s, va_list * args)
+{
+ u32 dev_instance = va_arg (*args, u32);
+ s = format (s, "unimplemented dev %u", dev_instance);
+ return s;
+}
+
+/* *INDENT-OFF* */
+VNET_HW_INTERFACE_CLASS (l2tpv3_hw_class) = {
+ .name = "L2TPV3",
+ .format_header = format_l2tp_header_with_length,
+ .build_rewrite = default_build_rewrite,
+ .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
+};
+/* *INDENT-ON* */
+
+int
+create_l2tpv3_ipv6_tunnel (l2t_main_t * lm,
+ ip6_address_t * client_address,
+ ip6_address_t * our_address,
+ u32 local_session_id,
+ u32 remote_session_id,
+ u64 local_cookie,
+ u64 remote_cookie,
+ int l2_sublayer_present,
+ u32 encap_fib_index, u32 * sw_if_index)
+{
+ l2t_session_t *s = 0;
+ vnet_main_t *vnm = lm->vnet_main;
+ vnet_hw_interface_t *hi;
+ uword *p = (uword *) ~ 0;
+ u32 hw_if_index;
+ l2tpv3_header_t l2tp_hdr;
+ ip6_address_t *dst_address_copy, *src_address_copy;
+ u32 counter_index;
+
+ remote_session_id = clib_host_to_net_u32 (remote_session_id);
+ local_session_id = clib_host_to_net_u32 (local_session_id);
+
+ switch (lm->lookup_type)
+ {
+ case L2T_LOOKUP_SRC_ADDRESS:
+ p = hash_get_mem (lm->session_by_src_address, client_address);
+ break;
+
+ case L2T_LOOKUP_DST_ADDRESS:
+ p = hash_get_mem (lm->session_by_dst_address, our_address);
+ break;
+
+ case L2T_LOOKUP_SESSION_ID:
+ p = hash_get (lm->session_by_session_id, local_session_id);
+ break;
+
+ default:
+ ASSERT (0);
+ }
+
+ /* adding a session: session must not already exist */
+ if (p)
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ pool_get (lm->sessions, s);
+ memset (s, 0, sizeof (*s));
+ clib_memcpy (&s->our_address, our_address, sizeof (s->our_address));
+ clib_memcpy (&s->client_address, client_address,
+ sizeof (s->client_address));
+ s->local_cookie[0] = clib_host_to_net_u64 (local_cookie);
+ s->remote_cookie = clib_host_to_net_u64 (remote_cookie);
+ s->local_session_id = local_session_id;
+ s->remote_session_id = remote_session_id;
+ s->l2_sublayer_present = l2_sublayer_present;
+ /* precompute l2tp header size */
+ s->l2tp_hdr_size = l2_sublayer_present ?
+ sizeof (l2tpv3_header_t) :
+ sizeof (l2tpv3_header_t) - sizeof (l2tp_hdr.l2_specific_sublayer);
+ s->admin_up = 0;
+ s->encap_fib_index = encap_fib_index;
+
+ /* Setup hash table entries */
+ switch (lm->lookup_type)
+ {
+ case L2T_LOOKUP_SRC_ADDRESS:
+ src_address_copy = clib_mem_alloc (sizeof (*src_address_copy));
+ clib_memcpy (src_address_copy, client_address,
+ sizeof (*src_address_copy));
+ hash_set_mem (lm->session_by_src_address, src_address_copy,
+ s - lm->sessions);
+ break;
+ case L2T_LOOKUP_DST_ADDRESS:
+ dst_address_copy = clib_mem_alloc (sizeof (*dst_address_copy));
+ clib_memcpy (dst_address_copy, our_address, sizeof (*dst_address_copy));
+ hash_set_mem (lm->session_by_dst_address, dst_address_copy,
+ s - lm->sessions);
+ break;
+ case L2T_LOOKUP_SESSION_ID:
+ hash_set (lm->session_by_session_id, local_session_id,
+ s - lm->sessions);
+ break;
+
+ default:
+ ASSERT (0);
+ }
+
+ /* validate counters */
+ counter_index =
+ session_index_to_counter_index (s - lm->sessions,
+ SESSION_COUNTER_USER_TO_NETWORK);
+ vlib_validate_combined_counter (&lm->counter_main, counter_index);
+ vlib_validate_combined_counter (&lm->counter_main, counter_index + 1);
+
+ if (vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) > 0)
+ {
+ hw_if_index = lm->free_l2tpv3_tunnel_hw_if_indices
+ [vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) - 1];
+ _vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) -= 1;
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ hi->dev_instance = s - lm->sessions;
+ hi->hw_instance = hi->dev_instance;
+ }
+ else
+ {
+ hw_if_index = vnet_register_interface
+ (vnm, l2tpv3_device_class.index, s - lm->sessions,
+ l2tpv3_hw_class.index, s - lm->sessions);
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ hi->output_node_index = l2t_encap_node.index;
+ /* $$$$ initialize custom dispositions, if needed */
+ }
+
+ s->hw_if_index = hw_if_index;
+ s->sw_if_index = hi->sw_if_index;
+
+ if (sw_if_index)
+ *sw_if_index = hi->sw_if_index;
+
+ return 0;
+}
+
+static clib_error_t *
+create_l2tpv3_tunnel_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ ip6_address_t client_address, our_address;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ l2t_main_t *lm = &l2t_main;
+ u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
+ u32 local_session_id = 1, remote_session_id = 1;
+ int our_address_set = 0, client_address_set = 0;
+ int l2_sublayer_present = 0;
+ int rv;
+ u32 sw_if_index;
+ u32 encap_fib_id = ~0;
+ u32 encap_fib_index = ~0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "client %U",
+ unformat_ip6_address, &client_address))
+ client_address_set = 1;
+ else if (unformat (line_input, "our %U",
+ unformat_ip6_address, &our_address))
+ our_address_set = 1;
+ else if (unformat (line_input, "local-cookie %llx", &local_cookie))
+ ;
+ else if (unformat (line_input, "remote-cookie %llx", &remote_cookie))
+ ;
+ else if (unformat (line_input, "local-session-id %d",
+ &local_session_id))
+ ;
+ else if (unformat (line_input, "remote-session-id %d",
+ &remote_session_id))
+ ;
+ else if (unformat (line_input, "fib-id %d", &encap_fib_id))
+ ;
+ else if (unformat (line_input, "l2-sublayer-present"))
+ l2_sublayer_present = 1;
+ else
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ }
+
+ unformat_free (line_input);
+
+ if (encap_fib_id != ~0)
+ {
+ uword *p;
+ ip6_main_t *im = &ip6_main;
+ if (!(p = hash_get (im->fib_index_by_table_id, encap_fib_id)))
+ return clib_error_return (0, "No fib with id %d", encap_fib_id);
+ encap_fib_index = p[0];
+ }
+ else
+ {
+ encap_fib_index = ~0;
+ }
+
+ if (our_address_set == 0)
+ return clib_error_return (0, "our address not specified");
+ if (client_address_set == 0)
+ return clib_error_return (0, "client address not specified");
+
+ rv = create_l2tpv3_ipv6_tunnel (lm, &client_address, &our_address,
+ local_session_id, remote_session_id,
+ local_cookie, remote_cookie,
+ l2_sublayer_present,
+ encap_fib_index, &sw_if_index);
+ switch (rv)
+ {
+ case 0:
+ vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
+ vnet_get_main (), sw_if_index);
+ break;
+ case VNET_API_ERROR_INVALID_VALUE:
+ return clib_error_return (0, "session already exists...");
+
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "session does not exist...");
+
+ default:
+ return clib_error_return (0, "l2tp_session_add_del returned %d", rv);
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (create_l2tpv3_tunnel_command, static) =
+{
+ .path = "create l2tpv3 tunnel",
+ .short_help =
+ "create l2tpv3 tunnel client <ip6> our <ip6> local-cookie <hex> remote-cookie <hex> local-session <dec> remote-session <dec>",
+ .function = create_l2tpv3_tunnel_command_fn,
+};
+/* *INDENT-ON* */
+
+int
+l2tpv3_set_tunnel_cookies (l2t_main_t * lm,
+ u32 sw_if_index,
+ u64 new_local_cookie, u64 new_remote_cookie)
+{
+ l2t_session_t *s;
+ vnet_hw_interface_t *hi;
+ vnet_main_t *vnm = vnet_get_main ();
+ hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
+
+ if (pool_is_free_index (lm->sessions, hi->dev_instance))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ s = pool_elt_at_index (lm->sessions, hi->dev_instance);
+
+ s->local_cookie[1] = s->local_cookie[0];
+ s->local_cookie[0] = clib_host_to_net_u64 (new_local_cookie);
+ s->remote_cookie = clib_host_to_net_u64 (new_remote_cookie);
+
+ return 0;
+}
+
+
+static clib_error_t *
+set_l2tp_tunnel_cookie_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ l2t_main_t *lm = &l2t_main;
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 sw_if_index = ~0;
+ u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
+
+ int rv;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
+ &sw_if_index))
+ ;
+ else if (unformat (input, "local %llx", &local_cookie))
+ ;
+ else if (unformat (input, "remote %llx", &remote_cookie))
+ ;
+ else
+ break;
+ }
+ if (sw_if_index == ~0)
+ return clib_error_return (0, "unknown interface");
+ if (local_cookie == ~0)
+ return clib_error_return (0, "local cookie required");
+ if (remote_cookie == ~0)
+ return clib_error_return (0, "remote cookie required");
+
+ rv = l2tpv3_set_tunnel_cookies (lm, sw_if_index,
+ local_cookie, remote_cookie);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+ return clib_error_return (0, "invalid interface");
+
+ default:
+ return clib_error_return (0, "l2tp_session_set_cookies returned %d",
+ rv);
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_l2tp_tunnel_cookie_command, static) =
+{
+ .path = "set l2tpv3 tunnel cookie",
+ .short_help =
+ "set l2tpv3 tunnel cookie <intfc> local <hex> remote <hex>",
+ .function = set_l2tp_tunnel_cookie_command_fn,
+};
+/* *INDENT-ON* */
+
+int
+l2tpv3_interface_enable_disable (vnet_main_t * vnm,
+ u32 sw_if_index, int enable_disable)
+{
+
+ if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
+ return VNET_API_ERROR_INVALID_SW_IF_INDEX;
+
+ vnet_feature_enable_disable ("ip6-unicast", "l2tp-decap", sw_if_index,
+ enable_disable, 0, 0);
+ return 0;
+}
+
+/* Enable/disable L2TPv3 intercept on IP6 fowarding path */
+static clib_error_t *
+set_ip6_l2tpv3 (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ u32 sw_if_index = ~0;
+ int is_add = 1;
+ int rv;
+ vnet_main_t *vnm = vnet_get_main ();
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
+ &sw_if_index))
+ ;
+ else if (unformat (input, "del"))
+ is_add = 0;
+ else
+ break;
+ }
+
+ if (sw_if_index == ~0)
+ return clib_error_return (0, "interface required");
+
+ rv = l2tpv3_interface_enable_disable (vnm, sw_if_index, is_add);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+ return clib_error_return (0, "invalid interface");
+
+ default:
+ return clib_error_return (0,
+ "l2tp_interface_enable_disable returned %d",
+ rv);
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_interface_ip6_l2tpv3, static) =
+{
+ .path = "set interface ip6 l2tpv3",
+ .function = set_ip6_l2tpv3,
+ .short_help = "set interface ip6 l2tpv3 <intfc> [del]",
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+l2tp_config (vlib_main_t * vm, unformat_input_t * input)
+{
+ l2t_main_t *lm = &l2t_main;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "lookup-v6-src"))
+ lm->lookup_type = L2T_LOOKUP_SRC_ADDRESS;
+ else if (unformat (input, "lookup-v6-dst"))
+ lm->lookup_type = L2T_LOOKUP_DST_ADDRESS;
+ else if (unformat (input, "lookup-session-id"))
+ lm->lookup_type = L2T_LOOKUP_SESSION_ID;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+ return 0;
+}
+
+VLIB_CONFIG_FUNCTION (l2tp_config, "l2tp");
+
+
+clib_error_t *
+l2tp_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
+{
+ l2t_main_t *lm = &l2t_main;
+ vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
+ if (hi->hw_class_index != l2tpv3_hw_class.index)
+ return 0;
+
+ u32 session_index = hi->dev_instance;
+ l2t_session_t *s = pool_elt_at_index (lm->sessions, session_index);
+ s->admin_up = ! !(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP);
+ return 0;
+}
+
+VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (l2tp_sw_interface_up_down);
+
+clib_error_t *
+l2tp_init (vlib_main_t * vm)
+{
+ l2t_main_t *lm = &l2t_main;
+ ip_main_t *im = &ip_main;
+ ip_protocol_info_t *pi;
+
+ lm->vnet_main = vnet_get_main ();
+ lm->vlib_main = vm;
+ lm->lookup_type = L2T_LOOKUP_DST_ADDRESS;
+
+ lm->session_by_src_address = hash_create_mem
+ (0, sizeof (ip6_address_t) /* key bytes */ ,
+ sizeof (u32) /* value bytes */ );
+ lm->session_by_dst_address = hash_create_mem
+ (0, sizeof (ip6_address_t) /* key bytes */ ,
+ sizeof (u32) /* value bytes */ );
+ lm->session_by_session_id = hash_create (0, sizeof (uword));
+
+ pi = ip_get_protocol_info (im, IP_PROTOCOL_L2TP);
+ pi->unformat_pg_edit = unformat_pg_l2tp_header;
+
+ /* insure these nodes are included in build */
+ l2tp_encap_init (vm);
+ l2tp_decap_init ();
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (l2tp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff