tests: enable vpp_echo to run in gdb - vpp

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author	Dave Wallace <dwallacelf@gmail.com>	2019-10-21 03:28:17 +0000
committer	Florin Coras <florin.coras@gmail.com>	2019-10-22 16:31:03 +0000
commit	91af1859da0313d48fb152999a74a34cf384b490 (patch)
tree	e51cfaffb4787de8fab8a6ba2197df70388e4d9f /src/vnet/gre/interface.c
parent	2456433df46ae99dfbcec6260d14e592b5823c83 (diff)

tests: enable vpp_echo to run in gdb

- Enable vpp_echo to be run in gdb when running 'make test DEBUG=gdb-all' Type: test Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I79a69b0573c01900535078d7493d52b417350815

Diffstat (limited to 'src/vnet/gre/interface.c')

0 files changed, 0 insertions, 0 deletions

/* * 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/session/application_interface.h> #include <vnet/session/session.h> #include <vlibmemory/api.h> #include <vnet/dpo/load_balance.h> /** @file VPP's application/session API bind/unbind/connect/disconnect calls */ static u8 session_endpoint_is_local (session_endpoint_t * sep) { return (ip_is_zero (&sep->ip, sep->is_ip4) || ip_is_local_host (&sep->ip, sep->is_ip4)); } static u8 session_endpoint_is_zero (session_endpoint_t * sep) { return ip_is_zero (&sep->ip, sep->is_ip4); } u8 session_endpoint_in_ns (session_endpoint_t * sep) { u8 is_zero = ip_is_zero (&sep->ip, sep->is_ip4); if (!is_zero && sep->sw_if_index != ENDPOINT_INVALID_INDEX && !ip_interface_has_address (sep->sw_if_index, &sep->ip, sep->is_ip4)) { clib_warning ("sw_if_index %u not configured with ip %U", sep->sw_if_index, format_ip46_address, &sep->ip, sep->is_ip4); return 0; } return (is_zero || ip_is_local (sep->fib_index, &sep->ip, sep->is_ip4)); } int api_parse_session_handle (u64 handle, u32 * session_index, u32 * thread_index) { session_manager_main_t *smm = vnet_get_session_manager_main (); stream_session_t *pool; *thread_index = handle & 0xFFFFFFFF; *session_index = handle >> 32; if (*thread_index >= vec_len (smm->sessions)) return VNET_API_ERROR_INVALID_VALUE; pool = smm->sessions[*thread_index]; if (pool_is_free_index (pool, *session_index)) return VNET_API_ERROR_INVALID_VALUE_2; return 0; } static void session_endpoint_update_for_app (session_endpoint_t * sep, application_t * app) { app_namespace_t *app_ns; app_ns = app_namespace_get (app->ns_index); if (app_ns) { /* Ask transport and network to bind to/connect using local interface * that "supports" app's namespace. This will fix our local connection * endpoint. */ sep->sw_if_index = app_ns->sw_if_index; sep->fib_index = sep->is_ip4 ? app_ns->ip4_fib_index : app_ns->ip6_fib_index; } } static int vnet_bind_i (u32 app_index, session_endpoint_t * sep, u64 * handle) { application_t *app; u32 table_index; u64 listener; int rv, have_local = 0; app = application_get_if_valid (app_index); if (!app) { SESSION_DBG ("app not attached"); return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; } session_endpoint_update_for_app (sep, app); if (!session_endpoint_in_ns (sep)) return VNET_API_ERROR_INVALID_VALUE_2; table_index = application_session_table (app, session_endpoint_fib_proto (sep)); listener = session_lookup_endpoint_listener (table_index, sep, 1); if (listener != SESSION_INVALID_HANDLE) return VNET_API_ERROR_ADDRESS_IN_USE; /* * Add session endpoint to local session table. Only binds to "inaddr_any" * (i.e., zero address) are added to local scope table. */ if (application_has_local_scope (app) && session_endpoint_is_zero (sep)) { table_index = application_local_session_table (app); listener = session_lookup_endpoint_listener (table_index, sep, 1); if (listener != SESSION_INVALID_HANDLE) return VNET_API_ERROR_ADDRESS_IN_USE; session_lookup_add_session_endpoint (table_index, sep, app->index); *handle = session_lookup_local_listener_make_handle (sep); have_local = 1; } if (!application_has_global_scope (app)) return (have_local - 1); /* * Add session endpoint to global session table */ /* Setup listen path down to transport */ rv = application_start_listen (app, sep, handle); if (rv && have_local) session_lookup_del_session_endpoint (table_index, sep); return rv; } int vnet_unbind_i (u32 app_index, u64 handle) { application_t *app = application_get_if_valid (app_index); stream_session_t *listener = 0; u32 table_index; if (!app) { SESSION_DBG ("app (%d) not attached", app_index); return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; } /* * Clean up local session table. If we have a listener session use it to * find the port and proto. If not, the handle must be a local table handle * so parse it. */ if (application_has_local_scope (app)) { session_endpoint_t sep = SESSION_ENDPOINT_NULL; if (!session_lookup_local_is_handle (handle)) listener = listen_session_get_from_handle (handle); if (listener) { if (listen_session_get_local_session_endpoint (listener, &sep)) { clib_warning ("broken listener"); return -1; } } else { if (session_lookup_local_listener_parse_handle (handle, &sep)) { clib_warning ("can't parse handle"); return -1; } } table_index = application_local_session_table (app); session_lookup_del_session_endpoint (table_index, &sep); } /* * Clear the global scope table of the listener */ if (application_has_global_scope (app)) return application_stop_listen (app, handle); return 0; } static int app_connect_redirect (application_t * server, void *mp) { return server->cb_fns.redirect_connect_callback (server->api_client_index, mp); } int vnet_connect_i (u32 app_index, u32 api_context, session_endpoint_t * sep, void *mp) { application_t *server, *app; u32 table_index, server_index; stream_session_t *listener; if (session_endpoint_is_zero (sep)) return VNET_API_ERROR_INVALID_VALUE; app = application_get (app_index); session_endpoint_update_for_app (sep, app); /* * First check the the local scope for locally attached destinations. * If we have local scope, we pass *all* connects through it since we may * have special policy rules even for non-local destinations, think proxy. */ if (application_has_local_scope (app)) { table_index = application_local_session_table (app); server_index = session_lookup_local_endpoint (table_index, sep); if (server_index == APP_DROP_INDEX) return VNET_API_ERROR_APP_CONNECT_FILTERED; /* * Break loop if rule in local table points to connecting app. This * can happen if client is a generic proxy. Route connect through * global table instead. */ if (server_index != app_index) { server = application_get (server_index); /* * Server is willing to have a direct fifo connection created * instead of going through the state machine, etc. */ if (server && (server->flags & APP_OPTIONS_FLAGS_ACCEPT_REDIRECT)) return app_connect_redirect (server, mp); } } /* * If nothing found, check the global scope for locally attached * destinations. Make sure first that we're allowed to. */ if (session_endpoint_is_local (sep)) return VNET_API_ERROR_SESSION_CONNECT; if (!application_has_global_scope (app)) return VNET_API_ERROR_APP_CONNECT_SCOPE; table_index = application_session_table (app, session_endpoint_fib_proto (sep)); listener = session_lookup_listener (table_index, sep); if (listener) { server = application_get (listener->app_index); if (server && (server->flags & APP_OPTIONS_FLAGS_ACCEPT_REDIRECT)) return app_connect_redirect (server, mp); } /* * Not connecting to a local server, propagate to transport */ if (application_open_session (app, sep, api_context)) return VNET_API_ERROR_SESSION_CONNECT; return 0; } /** * unformat a vnet URI * * fifo://name * tcp://ip46-addr:port * udp://ip46-addr:port * * u8 ip46_address[16]; * u16 port_in_host_byte_order; * stream_session_type_t sst; * u8 *fifo_name; * * if (unformat (input, "%U", unformat_vnet_uri, &ip46_address, * &sst, &port, &fifo_name)) * etc... * */ uword unformat_vnet_uri (unformat_input_t * input, va_list * args) { session_endpoint_t *sep = va_arg (*args, session_endpoint_t *); if (unformat (input, "tcp://%U/%d", unformat_ip4_address, &sep->ip.ip4, &sep->port)) { sep->transport_proto = TRANSPORT_PROTO_TCP; sep->port = clib_host_to_net_u16 (sep->port); sep->is_ip4 = 1; return 1; } if (unformat (input, "udp://%U/%d", unformat_ip4_address, &sep->ip.ip4, &sep->port)) { sep->transport_proto = TRANSPORT_PROTO_UDP; sep->port = clib_host_to_net_u16 (sep->port); sep->is_ip4 = 1; return 1; } if (unformat (input, "udp://%U/%d", unformat_ip6_address, &sep->ip.ip6, &sep->port)) { sep->transport_proto = TRANSPORT_PROTO_UDP; sep->port = clib_host_to_net_u16 (sep->port); sep->is_ip4 = 0; return 1; } if (unformat (input, "tcp://%U/%d", unformat_ip6_address, &sep->ip.ip6, &sep->port)) { sep->transport_proto = TRANSPORT_PROTO_TCP; sep->port = clib_host_to_net_u16 (sep->port); sep->is_ip4 = 0; return 1; } return 0; } static u8 *cache_uri; static session_endpoint_t *cache_sep; int parse_uri (char *uri, session_endpoint_t * sep) { unformat_input_t _input, *input = &_input; if (cache_uri && !strncmp (uri, (char *) cache_uri, vec_len (cache_uri))) { *sep = *cache_sep; return 0; } /* Make sure */ uri = (char *) format (0, "%s%c", uri, 0); /* Parse uri */ unformat_init_string (input, uri, strlen (uri)); if (!unformat (input, "%U", unformat_vnet_uri, sep)) { unformat_free (input); return VNET_API_ERROR_INVALID_VALUE; } unformat_free (input); vec_free (cache_uri); cache_uri = (u8 *) uri; if (cache_sep) clib_mem_free (cache_sep); cache_sep = clib_mem_alloc (sizeof (*sep)); *cache_sep = *sep; return 0; } static int session_validate_namespace (u8 * namespace_id, u64 secret, u32 * app_ns_index) { app_namespace_t *app_ns; if (vec_len (namespace_id) == 0) { /* Use default namespace */ *app_ns_index = 0; return 0; } *app_ns_index = app_namespace_index_from_id (namespace_id); if (*app_ns_index == APP_NAMESPACE_INVALID_INDEX) return VNET_API_ERROR_APP_INVALID_NS; app_ns = app_namespace_get (*app_ns_index); if (!app_ns) return VNET_API_ERROR_APP_INVALID_NS; if (app_ns->ns_secret != secret) return VNET_API_ERROR_APP_WRONG_NS_SECRET; return 0; } /** * Attach application to vpp * * Allocates a vpp app, i.e., a structure that keeps back pointers * to external app and a segment manager for shared memory fifo based * communication with the external app. */ clib_error_t * vnet_application_attach (vnet_app_attach_args_t * a) { application_t *app = 0; segment_manager_t *sm; u8 *seg_name; u64 secret; u32 app_ns_index = 0; int rv; app = application_lookup (a->api_client_index); if (app) return clib_error_return_code (0, VNET_API_ERROR_APP_ALREADY_ATTACHED, 0, "app already attached"); secret = a->options[APP_OPTIONS_NAMESPACE_SECRET]; if ((rv = session_validate_namespace (a->namespace_id, secret, &app_ns_index))) return clib_error_return_code (0, rv, 0, "namespace validation: %d", rv); a->options[APP_OPTIONS_NAMESPACE] = app_ns_index; app = application_new (); if ((rv = application_init (app, a->api_client_index, a->options, a->session_cb_vft))) return clib_error_return_code (0, rv, 0, "app init: %d", rv); a->app_event_queue_address = pointer_to_uword (app->event_queue); sm = segment_manager_get (app->first_segment_manager); segment_manager_get_segment_info (sm->segment_indices[0], &seg_name, &a->segment_size); if (application_is_proxy (app)) application_setup_proxy (app); a->segment_name_length = vec_len (seg_name); a->segment_name = seg_name; ASSERT (vec_len (a->segment_name) <= 128); a->app_index = app->index; return 0; } /** * Detach application from vpp */ int vnet_application_detach (vnet_app_detach_args_t * a) { application_t *app; app = application_get_if_valid (a->app_index); if (!app) { clib_warning ("app not attached"); return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; } application_del (app); return 0; } int vnet_bind_uri (vnet_bind_args_t * a) { session_endpoint_t sep = SESSION_ENDPOINT_NULL; int rv; rv = parse_uri (a->uri, &sep); if (rv) return rv; return vnet_bind_i (a->app_index, &sep, &a->handle); } int vnet_unbind_uri (vnet_unbind_args_t * a) { stream_session_t *listener; session_endpoint_t sep = SESSION_ENDPOINT_NULL; int rv; rv = parse_uri (a->uri, &sep); if (rv) return rv; /* NOTE: only default table supported for uri */ listener = session_lookup_listener (0, &sep); if (!listener) return VNET_API_ERROR_ADDRESS_NOT_IN_USE; return vnet_unbind_i (a->app_index, listen_session_get_handle (listener)); } clib_error_t * vnet_connect_uri (vnet_connect_args_t * a) { session_endpoint_t sep_null = SESSION_ENDPOINT_NULL; int rv; /* Parse uri */ a->sep = sep_null; rv = parse_uri (a->uri, &a->sep); if (rv) return clib_error_return_code (0, rv, 0, "app init: %d", rv); if ((rv = vnet_connect_i (a->app_index, a->api_context, &a->sep, a->mp))) return clib_error_return_code (0, rv, 0, "connect failed"); return 0; } int vnet_disconnect_session (vnet_disconnect_args_t * a) { u32 index, thread_index; stream_session_t *s; session_parse_handle (a->handle, &index, &thread_index); s = session_get_if_valid (index, thread_index); if (!s || s->app_index != a->app_index) return VNET_API_ERROR_INVALID_VALUE; /* We're peeking into another's thread pool. Make sure */ ASSERT (s->session_index == index); session_send_session_evt_to_thread (a->handle, FIFO_EVENT_DISCONNECT, thread_index); return 0; } clib_error_t * vnet_bind (vnet_bind_args_t * a) { int rv; if ((rv = vnet_bind_i (a->app_index, &a->sep, &a->handle))) return clib_error_return_code (0, rv, 0, "bind failed"); return 0; } clib_error_t * vnet_unbind (vnet_unbind_args_t * a) { int rv; if ((rv = vnet_unbind_i (a->app_index, a->handle))) return clib_error_return_code (0, rv, 0, "unbind failed"); return 0; } clib_error_t * vnet_connect (vnet_connect_args_t * a) { int rv; if ((rv = vnet_connect_i (a->app_index, a->api_context, &a->sep, a->mp))) return clib_error_return_code (0, rv, 0, "connect failed"); return 0; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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