/* * Copyright (c) 2017 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this * 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 #include #include #include #include #include #include static const char * vppcom_app_state_str (app_state_t state) { char *st; switch (state) { case STATE_APP_START: st = "STATE_APP_START"; break; case STATE_APP_CONN_VPP: st = "STATE_APP_CONN_VPP"; break; case STATE_APP_ENABLED: st = "STATE_APP_ENABLED"; break; case STATE_APP_ATTACHED: st = "STATE_APP_ATTACHED"; break; default: st = "UNKNOWN_APP_STATE"; break; } return st; } const char * vppcom_session_state_str (session_state_t state) { char *st; switch (state) { case STATE_START: st = "STATE_START"; break; case STATE_CONNECT: st = "STATE_CONNECT"; break; case STATE_LISTEN: st = "STATE_LISTEN"; break; case STATE_ACCEPT: st = "STATE_ACCEPT"; break; case STATE_CLOSE_ON_EMPTY: st = "STATE_CLOSE_ON_EMPTY"; break; case STATE_DISCONNECT: st = "STATE_DISCONNECT"; break; case STATE_FAILED: st = "STATE_FAILED"; break; default: st = "UNKNOWN_STATE"; break; } return st; } u8 * format_ip4_address (u8 * s, va_list * args) { u8 *a = va_arg (*args, u8 *); return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); } u8 * format_ip6_address (u8 * s, va_list * args) { ip6_address_t *a = va_arg (*args, ip6_address_t *); u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon; i_max_n_zero = ARRAY_LEN (a->as_u16); max_n_zeros = 0; i_first_zero = i_max_n_zero; n_zeros = 0; for (i = 0; i < ARRAY_LEN (a->as_u16); i++) { u32 is_zero = a->as_u16[i] == 0; if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16)) { i_first_zero = i; n_zeros = 0; } n_zeros += is_zero; if ((!is_zero && n_zeros > max_n_zeros) || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros)) { i_max_n_zero = i_first_zero; max_n_zeros = n_zeros; i_first_zero = ARRAY_LEN (a->as_u16); n_zeros = 0; } } last_double_colon = 0; for (i = 0; i < ARRAY_LEN (a->as_u16); i++) { if (i == i_max_n_zero && max_n_zeros > 1) { s = format (s, "::"); i += max_n_zeros - 1; last_double_colon = 1; } else { s = format (s, "%s%x", (last_double_colon || i == 0) ? "" : ":", clib_net_to_host_u16 (a->as_u16[i])); last_double_colon = 0; } } return s; } /* Format an IP46 address. */ u8 * format_ip46_address (u8 * s, va_list * args) { ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); ip46_type_t type = va_arg (*args, ip46_type_t); int is_ip4 = 1; switch (type) { case IP46_TYPE_ANY: is_ip4 = ip46_address_is_ip4 (ip46); break; case IP46_TYPE_IP4: is_ip4 = 1; break; case IP46_TYPE_IP6: is_ip4 = 0; break; } return is_ip4 ? format (s, "%U", format_ip4_address, &ip46->ip4) : format (s, "%U", format_ip6_address, &ip46->ip6); } /* * VPPCOM Utility Functions */ static inline void vppcom_session_table_del_listener (u64 listener_handle) { listener_handle |= 1ULL << 63; hash_unset (vcm->session_index_by_vpp_handles, listener_handle); } static inline int vppcom_wait_for_app_state_change (app_state_t app_state) { f64 timeout = clib_time_now (&vcm->clib_time) + vcm->cfg.app_timeout; while (clib_time_now (&vcm->clib_time) < timeout) { if (vcm->app_state == app_state) return VPPCOM_OK; } VDBG (0, "VCL<%d>: timeout waiting for state %s (%d)", getpid (), vppcom_app_state_str (app_state), app_state); vcl_evt (VCL_EVT_SESSION_TIMEOUT, vcm, app_state); return VPPCOM_ETIMEDOUT; } static inline int vppcom_wait_for_session_state_change (u32 session_index, session_state_t state, f64 wait_for_time) { f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; vcl_session_t *volatile session; int rv; do { VCL_SESSION_LOCK (); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VCL_SESSION_UNLOCK (); return rv; } if (session->session_state & state) { VCL_SESSION_UNLOCK (); return VPPCOM_OK; } if (session->session_state & STATE_FAILED) { VCL_SESSION_UNLOCK (); return VPPCOM_ECONNREFUSED; } VCL_SESSION_UNLOCK (); } while (clib_time_now (&vcm->clib_time) < timeout); VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state, vppcom_session_state_str (state)); vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state); return VPPCOM_ETIMEDOUT; } static int vppcom_app_session_enable (void) { int rv; if (vcm->app_state != STATE_APP_ENABLED) { vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ ); rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: application session enable timed out! " "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); return rv; } } return VPPCOM_OK; } static int vppcom_app_attach (void) { int rv; vppcom_app_send_attach (); rv = vppcom_wait_for_app_state_change (STATE_APP_ATTACHED); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); return rv; } return VPPCOM_OK; } static int vppcom_session_unbind (u32 session_index) { vcl_session_t *session = 0; int rv; u64 vpp_handle; VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; vppcom_session_table_del_listener (vpp_handle); session->vpp_handle = ~0; session->session_state = STATE_DISCONNECT; VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state" " 0x%x (%s)", getpid (), vpp_handle, session_index, STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT)); vcl_evt (VCL_EVT_UNBIND, session); vppcom_send_unbind_sock (vpp_handle); done: return rv; } static int vppcom_session_disconnect (u32 session_index) { int rv; vcl_session_t *session; u64 vpp_handle; session_state_t state; VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; state = session->session_state; VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (), vpp_handle, session_index, state, vppcom_session_state_str (state)); if (PREDICT_FALSE (state & STATE_LISTEN)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "Cannot disconnect a listen socket!", getpid (), vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } /* The peer has already initiated the close, * so send the disconnect session reply. */ if (state & STATE_CLOSE_ON_EMPTY) { //XXX alagalah - Check and drain here? vppcom_send_disconnect_session_reply (vpp_handle, session_index, 0 /* rv */ ); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect " "REPLY...", getpid (), vpp_handle, session_index); } /* Otherwise, send a disconnect session msg... */ else { VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...", getpid (), vpp_handle, session_index); vppcom_send_disconnect_session (vpp_handle, session_index); } done: return rv; } /* * VPPCOM Public API functions */ int vppcom_app_create (char *app_name) { vppcom_cfg_t *vcl_cfg = &vcm->cfg; u8 *heap; mheap_t *h; int rv; if (!vcm->init) { vcm->init = 1; clib_spinlock_init (&vcm->session_fifo_lockp); clib_fifo_validate (vcm->client_session_index_fifo, vcm->cfg.listen_queue_size); clib_spinlock_init (&vcm->sessions_lockp); vppcom_cfg (&vcm->cfg); vcm->main_cpu = os_get_thread_index (); heap = clib_mem_get_per_cpu_heap (); h = mheap_header (heap); /* make the main heap thread-safe */ h->flags |= MHEAP_FLAG_THREAD_SAFE; vcm->session_index_by_vpp_handles = hash_create (0, sizeof (uword)); clib_time_init (&vcm->clib_time); vppcom_init_error_string_table (); svm_fifo_segment_main_init (vcl_cfg->segment_baseva, 20 /* timeout in secs */ ); } if (vcm->my_client_index == ~0) { /* API hookup and connect to VPP */ vppcom_api_hookup (); vcl_elog_init (vcm); vcm->app_state = STATE_APP_START; rv = vppcom_connect_to_vpp (app_name); if (rv) { clib_warning ("VCL<%d>: ERROR: couldn't connect to VPP!", getpid ()); return rv; } /* State event handling thread */ rv = vce_start_event_thread (&(vcm->event_thread), 20); VDBG (0, "VCL<%d>: sending session enable", getpid ()); rv = vppcom_app_session_enable (); if (rv) { clib_warning ("VCL<%d>: ERROR: vppcom_app_session_enable() " "failed!", getpid ()); return rv; } VDBG (0, "VCL<%d>: sending app attach", getpid ()); rv = vppcom_app_attach (); if (rv) { clib_warning ("VCL<%d>: ERROR: vppcom_app_attach() failed!", getpid ()); return rv; } VDBG (0, "VCL<%d>: app_name '%s', my_client_index %d (0x%x)", getpid (), app_name, vcm->my_client_index, vcm->my_client_index); } return VPPCOM_OK; } void vppcom_app_destroy (void) { int rv; f64 orig_app_timeout; if (vcm->my_client_index == ~0) return; VDBG (0, "VCL<%d>: detaching from VPP, my_client_index %d (0x%x)", getpid (), vcm->my_client_index, vcm->my_client_index); vcl_evt (VCL_EVT_DETACH, vcm); vppcom_app_send_detach (); orig_app_timeout = vcm->cfg.app_timeout; vcm->cfg.app_timeout = 2.0; rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); vcm->cfg.app_timeout = orig_app_timeout; if (PREDICT_FALSE (rv)) VDBG (0, "VCL<%d>: application detach timed out! returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); vcl_elog_stop (vcm); vl_client_disconnect_from_vlib (); vcm->my_client_index = ~0; vcm->app_state = STATE_APP_START; } int vppcom_session_create (u8 proto, u8 is_nonblocking) { vcl_session_t *session; u32 session_index; VCL_SESSION_LOCK (); pool_get (vcm->sessions, session); memset (session, 0, sizeof (*session)); session_index = session - vcm->sessions; session->session_type = proto; session->session_state = STATE_START; session->vpp_handle = ~0; if (is_nonblocking) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK); vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state, is_nonblocking, session_index); VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: sid %u", getpid (), session_index); return (int) session_index; } int vppcom_session_close (uint32_t session_index) { vcl_session_t *session = 0; int rv; u8 is_vep; u8 is_vep_session; u32 next_sid; u32 vep_idx; u64 vpp_handle; uword *p; session_state_t state; VCL_SESSION_LOCK_AND_GET (session_index, &session); is_vep = session->is_vep; is_vep_session = session->is_vep_session; next_sid = session->vep.next_sid; vep_idx = session->vep.vep_idx; state = session->session_state; vpp_handle = session->vpp_handle; VCL_SESSION_UNLOCK (); if (VPPCOM_DEBUG > 0) { if (is_vep) clib_warning ("VCL<%d>: vep_idx %u / sid %u: " "closing epoll session...", getpid (), session_index, session_index); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %d: " "closing session...", getpid (), vpp_handle, session_index); } if (is_vep) { while (next_sid != ~0) { rv = vppcom_epoll_ctl (session_index, EPOLL_CTL_DEL, next_sid, 0); if (PREDICT_FALSE (rv < 0)) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL " "vep_idx %u failed! rv %d (%s)", getpid (), vpp_handle, next_sid, vep_idx, rv, vppcom_retval_str (rv)); VCL_SESSION_LOCK_AND_GET (session_index, &session); next_sid = session->vep.next_sid; VCL_SESSION_UNLOCK (); } } else { if (is_vep_session) { rv = vppcom_epoll_ctl (vep_idx, EPOLL_CTL_DEL, session_index, 0); if (rv < 0) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL " "vep_idx %u failed! rv %d (%s)", getpid (), vpp_handle, session_index, vep_idx, rv, vppcom_retval_str (rv)); } if (state & STATE_LISTEN) { rv = vppcom_session_unbind (session_index); if (PREDICT_FALSE (rv < 0)) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: listener unbind " "failed! rv %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); } else if (state & (CLIENT_STATE_OPEN | SERVER_STATE_OPEN)) { rv = vppcom_session_disconnect (session_index); if (PREDICT_FALSE (rv < 0)) clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "session disconnect failed! rv %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); } } VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; if (vpp_handle != ~0) { p = hash_get (vcm->session_index_by_vpp_handles, vpp_handle); if (p) hash_unset (vcm->session_index_by_vpp_handles, vpp_handle); } pool_put_index (vcm->sessions, session_index); VCL_SESSION_UNLOCK (); if (VPPCOM_DEBUG > 0) { if (is_vep) clib_warning ("VCL<%d>: vep_idx %u / sid %u: epoll session removed.", getpid (), session_index, session_index); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: session removed.", getpid (), vpp_handle, session_index); } done: vcl_evt (VCL_EVT_CLOSE, session, rv); return rv; } int vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep) { vcl_session_t *session = 0; int rv; if (!ep || !ep->ip) return VPPCOM_EINVAL; VCL_SESSION_LOCK_AND_GET (session_index, &session); if (session->is_vep) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "bind to an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } session->transport.is_ip4 = ep->is_ip4; session->transport.lcl_ip = to_ip46 (ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, ep->ip); session->transport.lcl_port = ep->port; VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, " "proto %s", getpid (), session_index, session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &session->transport.lcl_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.lcl_port), session->session_type ? "UDP" : "TCP"); vcl_evt (VCL_EVT_BIND, session); VCL_SESSION_UNLOCK (); done: return rv; } int vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len) { vcl_session_t *listen_session = 0; u64 listen_vpp_handle; int rv, retval; if (q_len == 0 || q_len == ~0) q_len = vcm->cfg.listen_queue_size; VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); if (listen_session->is_vep) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an " "epoll session!", getpid (), listen_session_index); rv = VPPCOM_EBADFD; goto done; } listen_vpp_handle = listen_session->vpp_handle; if (listen_session->session_state & STATE_LISTEN) { VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!", getpid (), listen_vpp_handle, listen_session_index); rv = VPPCOM_OK; goto done; } VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen " "request...", getpid (), listen_vpp_handle, listen_session_index); vppcom_send_bind_sock (listen_session, listen_session_index); VCL_SESSION_UNLOCK (); retval = vppcom_wait_for_session_state_change (listen_session_index, STATE_LISTEN, vcm->cfg.session_timeout); VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); if (PREDICT_FALSE (retval)) { VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! " "returning %d (%s)", getpid (), listen_session->vpp_handle, listen_session_index, retval, vppcom_retval_str (retval)); VCL_SESSION_UNLOCK (); rv = retval; goto done; } VCL_ACCEPT_FIFO_LOCK (); clib_fifo_validate (vcm->client_session_index_fifo, q_len); VCL_ACCEPT_FIFO_UNLOCK (); VCL_SESSION_UNLOCK (); done: return rv; } int validate_args_session_accept_ (vcl_session_t * listen_session) { u32 listen_session_index = listen_session - vcm->sessions; /* Input validation - expects spinlock on sessions_lockp */ if (listen_session->is_vep) { clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an " "epoll session!", getpid (), listen_session_index); return VPPCOM_EBADFD; } if (listen_session->session_state != STATE_LISTEN) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "not in listen state! state 0x%x (%s)", getpid (), listen_session->vpp_handle, listen_session_index, listen_session->session_state, vppcom_session_state_str (listen_session->session_state)); return VPPCOM_EBADFD; } return VPPCOM_OK; } int vppcom_session_accept (uint32_t listen_session_index, vppcom_endpt_t * ep, uint32_t flags) { vcl_session_t *listen_session = 0; vcl_session_t *client_session = 0; u32 client_session_index = ~0; int rv; u64 listen_vpp_handle; vce_event_handler_reg_t *reg; vce_event_t *ev; vce_event_connect_request_t *result; struct timespec ts; struct timeval tv; int millisecond_timeout = 1; int hours_timeout = 20 * 60 * 60; VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); listen_vpp_handle = listen_session->vpp_handle; // For debugging rv = validate_args_session_accept_ (listen_session); if (rv) { VCL_SESSION_UNLOCK (); goto done; } /* Using an aggressive timer of 1ms and a generous timer of * 20 hours, we can implement a blocking and non-blocking listener * as both event and time driven */ gettimeofday (&tv, NULL); ts.tv_nsec = (tv.tv_usec * 1000) + (1000 * millisecond_timeout); ts.tv_sec = tv.tv_sec; /* Predict that the Listener is blocking more often than not */ if (PREDICT_TRUE (!VCL_SESS_ATTR_TEST (listen_session->attr, VCL_SESS_ATTR_NONBLOCK))) ts.tv_sec += hours_timeout; VCL_SESSION_UNLOCK (); /* Register handler for connect_request event on listen_session_index */ vce_event_key_t evk; evk.session_index = listen_session_index; evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED; reg = vce_register_handler (&vcm->event_thread, &evk, vce_connect_request_handler_fn, 0); VCL_EVENTS_LOCK (); ev = vce_get_event_from_index (&vcm->event_thread, reg->ev_idx); pthread_mutex_lock (®->handler_lock); while (!ev) { VCL_EVENTS_UNLOCK (); rv = pthread_cond_timedwait (®->handler_cond, ®->handler_lock, &ts); if (rv == ETIMEDOUT) { rv = VPPCOM_EAGAIN; goto cleanup; } VCL_EVENTS_LOCK (); ev = vce_get_event_from_index (&vcm->event_thread, reg->ev_idx); } result = vce_get_event_data (ev, sizeof (*result)); client_session_index = result->accepted_session_index; VCL_EVENTS_UNLOCK (); /* Remove from the FIFO used to service epoll */ VCL_ACCEPT_FIFO_LOCK (); if (clib_fifo_elts (vcm->client_session_index_fifo)) { u32 tmp_client_session_index; clib_fifo_sub1 (vcm->client_session_index_fifo, tmp_client_session_index); /* It wasn't ours... put it back ... */ if (tmp_client_session_index != client_session_index) clib_fifo_add1 (vcm->client_session_index_fifo, tmp_client_session_index); } VCL_ACCEPT_FIFO_UNLOCK (); VCL_SESSION_LOCK (); rv = vppcom_session_at_index (client_session_index, &client_session); if (PREDICT_FALSE (rv)) { rv = VPPCOM_ECONNABORTED; clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: client sid %u " "lookup failed! returning %d (%s)", getpid (), listen_vpp_handle, listen_session_index, client_session_index, rv, vppcom_retval_str (rv)); goto cleanup; } if (flags & O_NONBLOCK) VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK); else VCL_SESS_ATTR_CLR (client_session->attr, VCL_SESS_ATTR_NONBLOCK); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: Got a client request! " "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u", getpid (), listen_vpp_handle, listen_session_index, client_session->vpp_handle, client_session_index, flags, VCL_SESS_ATTR_TEST (client_session->attr, VCL_SESS_ATTR_NONBLOCK)); if (ep) { ep->is_ip4 = client_session->transport.is_ip4; ep->port = client_session->transport.rmt_port; if (client_session->transport.is_ip4) clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); } vppcom_send_accept_session_reply (client_session->vpp_handle, client_session->client_context, 0 /* retval OK */ ); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx," " sid %u connection from peer %s address %U port %u to local %s address" " %U port %u", getpid (), listen_vpp_handle, listen_session_index, client_session->vpp_handle, client_session_index, client_session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &client_session->transport.rmt_ip, client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (client_session->transport.rmt_port), client_session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &client_session->transport.lcl_ip, client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (client_session->transport.lcl_port)); vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session, client_session_index); VCL_SESSION_UNLOCK (); rv = (int) client_session_index; vce_clear_event (&vcm->event_thread, reg->ev_idx); if (vcm->session_io_thread.io_sessions_lockp) { /* Throw this new accepted session index into the rx poll thread pool */ VCL_IO_SESSIONS_LOCK (); u32 *active_session_index; pool_get (vcm->session_io_thread.active_session_indexes, active_session_index); *active_session_index = client_session_index; VCL_IO_SESSIONS_UNLOCK (); } cleanup: vce_unregister_handler (&vcm->event_thread, reg); pthread_mutex_unlock (®->handler_lock); done: return rv; } int vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep) { vcl_session_t *session = 0; u64 vpp_handle = 0; int rv, retval = VPPCOM_OK; VCL_SESSION_LOCK_AND_GET (session_index, &session); if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "connect on an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN)) { VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already " "connected to %s %U port %d proto %s, state 0x%x (%s)", getpid (), session->vpp_handle, session_index, session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.rmt_port), session->session_type ? "UDP" : "TCP", session->session_state, vppcom_session_state_str (session->session_state)); VCL_SESSION_UNLOCK (); goto done; } session->transport.is_ip4 = server_ep->is_ip4; if (session->transport.is_ip4) clib_memcpy (&session->transport.rmt_ip.ip4, server_ep->ip, sizeof (ip4_address_t)); else clib_memcpy (&session->transport.rmt_ip.ip6, server_ep->ip, sizeof (ip6_address_t)); session->transport.rmt_port = server_ep->port; VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U " "port %d proto %s", getpid (), session->vpp_handle, session_index, session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.rmt_port), session->session_type ? "UDP" : "TCP"); vppcom_send_connect_sock (session, session_index); VCL_SESSION_UNLOCK (); retval = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT, vcm->cfg.session_timeout); VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; VCL_SESSION_UNLOCK (); done: if (PREDICT_FALSE (retval)) { rv = retval; if (VPPCOM_DEBUG > 0) { if (session) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect " "failed! returning %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); else clib_warning ("VCL<%d>: no session for sid %u: connect failed! " "returning %d (%s)", getpid (), session_index, rv, vppcom_retval_str (rv)); } } else VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!", getpid (), vpp_handle, session_index); return rv; } static inline int vppcom_session_read_internal (uint32_t session_index, void *buf, int n, u8 peek) { vcl_session_t *session = 0; svm_fifo_t *rx_fifo; int n_read = 0; int rv; int is_nonblocking; u64 vpp_handle; u32 poll_et; session_state_t state; ASSERT (buf); VCL_SESSION_LOCK_AND_GET (session_index, &session); is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK); rx_fifo = session->rx_fifo; state = session->session_state; vpp_handle = session->vpp_handle; if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "read from an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } if (PREDICT_FALSE (!(state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN)))) { VCL_SESSION_UNLOCK (); rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! " "state 0x%x (%s), returning %d (%s)", getpid (), vpp_handle, session_index, state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); goto done; } VCL_SESSION_UNLOCK (); do { if (peek) n_read = svm_fifo_peek (rx_fifo, 0, n, buf); else n_read = svm_fifo_dequeue_nowait (rx_fifo, n, buf); } while (!is_nonblocking && (n_read <= 0)); if (n_read <= 0) { VCL_SESSION_LOCK_AND_GET (session_index, &session); poll_et = (((EPOLLET | EPOLLIN) & session->vep.ev.events) == (EPOLLET | EPOLLIN)); if (poll_et) session->vep.et_mask |= EPOLLIN; if (state & STATE_CLOSE_ON_EMPTY) { rv = VPPCOM_ECONNRESET; VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with " "session state 0x%x (%s)! Setting state to 0x%x (%s), " "returning %d (%s)", getpid (), session->vpp_handle, session_index, state, vppcom_session_state_str (state), STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT), rv, vppcom_retval_str (rv)); session->session_state = STATE_DISCONNECT; } else rv = VPPCOM_EAGAIN; VCL_SESSION_UNLOCK (); } else rv = n_read; if (VPPCOM_DEBUG > 2) { if (rv > 0) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes " "from (%p)", getpid (), vpp_handle, session_index, n_read, rx_fifo); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: nothing read! " "returning %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); } done: return rv; } int vppcom_session_read (uint32_t session_index, void *buf, size_t n) { return (vppcom_session_read_internal (session_index, buf, n, 0)); } static int vppcom_session_peek (uint32_t session_index, void *buf, int n) { return (vppcom_session_read_internal (session_index, buf, n, 1)); } static inline int vppcom_session_read_ready (vcl_session_t * session, u32 session_index) { int ready = 0; u32 poll_et; int rv; session_state_t state = session->session_state; u64 vpp_handle = session->vpp_handle; /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (session->is_vep)) { clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an " "epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } if (session->session_state & STATE_LISTEN) { VCL_ACCEPT_FIFO_LOCK (); ready = clib_fifo_elts (vcm->client_session_index_fifo); VCL_ACCEPT_FIFO_UNLOCK (); } else { if (!(state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN | STATE_LISTEN))) { rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!" " state 0x%x (%s), returning %d (%s)", getpid (), vpp_handle, session_index, state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); goto done; } ready = svm_fifo_max_dequeue (session->rx_fifo); } if (ready == 0) { poll_et = ((EPOLLET | EPOLLIN) & session->vep.ev.events) == (EPOLLET | EPOLLIN); if (poll_et) session->vep.et_mask |= EPOLLIN; if (state & STATE_CLOSE_ON_EMPTY) { rv = VPPCOM_ECONNRESET; VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with " "session state 0x%x (%s)! Setting state to 0x%x (%s), " "returning %d (%s)", getpid (), session_index, vpp_handle, state, vppcom_session_state_str (state), STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT), rv, vppcom_retval_str (rv)); session->session_state = STATE_DISCONNECT; goto done; } } rv = ready; if (vcm->app_event_queue->cursize && !pthread_mutex_trylock (&vcm->app_event_queue->mutex)) { u32 i, n_to_dequeue = vcm->app_event_queue->cursize; session_fifo_event_t e; for (i = 0; i < n_to_dequeue; i++) svm_queue_sub_raw (vcm->app_event_queue, (u8 *) & e); pthread_mutex_unlock (&vcm->app_event_queue->mutex); } done: return rv; } int vppcom_session_write (uint32_t session_index, void *buf, size_t n) { vcl_session_t *session = 0; svm_fifo_t *tx_fifo = 0; svm_queue_t *q; session_fifo_event_t evt; session_state_t state; int rv, n_write, is_nonblocking; u32 poll_et; u64 vpp_handle; ASSERT (buf); VCL_SESSION_LOCK_AND_GET (session_index, &session); tx_fifo = session->tx_fifo; is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK); vpp_handle = session->vpp_handle; state = session->session_state; if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to an epoll session!", getpid (), vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } if (!(session->session_state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN))) { rv = ((session->session_state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! " "state 0x%x (%s)", getpid (), vpp_handle, session_index, state, vppcom_session_state_str (state)); goto done; } VCL_SESSION_UNLOCK (); do { n_write = svm_fifo_enqueue_nowait (tx_fifo, n, (void *) buf); } while (!is_nonblocking && (n_write <= 0)); /* If event wasn't set, add one * * To reduce context switching, can check if an * event is already there for this event_key, but for now * this will suffice. */ if ((n_write > 0) && svm_fifo_set_event (tx_fifo)) { /* Fabricate TX event, send to vpp */ evt.fifo = tx_fifo; evt.event_type = FIFO_EVENT_APP_TX; VCL_SESSION_LOCK_AND_GET (session_index, &session); q = session->vpp_evt_q; ASSERT (q); svm_queue_add (q, (u8 *) & evt, 0 /* do wait for mutex */ ); VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: added FIFO_EVENT_APP_TX " "to vpp_event_q %p, n_write %d", getpid (), vpp_handle, session_index, q, n_write); } if (n_write <= 0) { VCL_SESSION_LOCK_AND_GET (session_index, &session); poll_et = (((EPOLLET | EPOLLOUT) & session->vep.ev.events) == (EPOLLET | EPOLLOUT)); if (poll_et) session->vep.et_mask |= EPOLLOUT; if (session->session_state & STATE_CLOSE_ON_EMPTY) { rv = VPPCOM_ECONNRESET; VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with " "session state 0x%x (%s)! Setting state to 0x%x (%s), " "returning %d (%s)", getpid (), session->vpp_handle, session_index, session->session_state, vppcom_session_state_str (session->session_state), STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT), rv, vppcom_retval_str (rv)); session->session_state = STATE_DISCONNECT; } else rv = VPPCOM_EAGAIN; VCL_SESSION_UNLOCK (); } else rv = n_write; if (VPPCOM_DEBUG > 2) { if (n_write <= 0) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: " "FIFO-FULL (%p)", getpid (), vpp_handle, session_index, tx_fifo); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: " "wrote %d bytes tx-fifo: (%p)", getpid (), vpp_handle, session_index, n_write, tx_fifo); } done: return rv; } static inline int vppcom_session_write_ready (vcl_session_t * session, u32 session_index) { int ready; u32 poll_et; int rv; ASSERT (session); /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to an epoll session!", getpid (), session->vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } if (PREDICT_FALSE (session->session_state & STATE_LISTEN)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to a listen session!", getpid (), session->vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } if (!(session->session_state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN))) { session_state_t state = session->session_state; rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "session is not open! state 0x%x (%s), " "returning %d (%s)", getpid (), session->vpp_handle, session_index, state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); goto done; } ready = svm_fifo_max_enqueue (session->tx_fifo); VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d", getpid (), session->vpp_handle, session_index, session->tx_fifo, ready); if (ready == 0) { poll_et = (((EPOLLET | EPOLLOUT) & session->vep.ev.events) == (EPOLLET | EPOLLOUT)); if (poll_et) session->vep.et_mask |= EPOLLOUT; if (session->session_state & STATE_CLOSE_ON_EMPTY) { rv = VPPCOM_ECONNRESET; VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with " "session state 0x%x (%s)! Setting state to 0x%x (%s), " "returning %d (%s)", getpid (), session->vpp_handle, session_index, session->session_state, vppcom_session_state_str (session->session_state), STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT), rv, vppcom_retval_str (rv)); session->session_state = STATE_DISCONNECT; goto done; } } rv = ready; done: return rv; } int vppcom_select (unsigned long n_bits, unsigned long *read_map, unsigned long *write_map, unsigned long *except_map, double time_to_wait) { u32 session_index; vcl_session_t *session = 0; int rv, bits_set = 0; f64 timeout = clib_time_now (&vcm->clib_time) + time_to_wait; u32 minbits = clib_max (n_bits, BITS (uword)); ASSERT (sizeof (clib_bitmap_t) == sizeof (long int)); if (n_bits && read_map) { clib_bitmap_validate (vcm->rd_bitmap, minbits); clib_memcpy (vcm->rd_bitmap, read_map, vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t)); memset (read_map, 0, vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t)); } if (n_bits && write_map) { clib_bitmap_validate (vcm->wr_bitmap, minbits); clib_memcpy (vcm->wr_bitmap, write_map, vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t)); memset (write_map, 0, vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t)); } if (n_bits && except_map) { clib_bitmap_validate (vcm->ex_bitmap, minbits); clib_memcpy (vcm->ex_bitmap, except_map, vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t)); memset (except_map, 0, vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t)); } do { /* *INDENT-OFF* */ if (n_bits) { if (read_map) { clib_bitmap_foreach (session_index, vcm->rd_bitmap, ({ VCL_SESSION_LOCK(); rv = vppcom_session_at_index (session_index, &session); if (rv < 0) { VCL_SESSION_UNLOCK(); VDBG (1, "VCL<%d>: session %d specified in read_map is" " closed.", getpid (), session_index); bits_set = VPPCOM_EBADFD; goto select_done; } if (session->session_state & STATE_LISTEN) { vce_event_handler_reg_t *reg = 0; vce_event_key_t evk; /* Check if handler already registered for this * event. * If not, register handler for connect_request event * on listen_session_index */ evk.session_index = session_index; evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED; reg = vce_get_event_handler (&vcm->event_thread, &evk); if (!reg) reg = vce_register_handler (&vcm->event_thread, &evk, vce_poll_wait_connect_request_handler_fn, 0 /* No callback args */); rv = vppcom_session_read_ready (session, session_index); if (rv > 0) { vce_unregister_handler (&vcm->event_thread, reg); } } else rv = vppcom_session_read_ready (session, session_index); VCL_SESSION_UNLOCK(); if (except_map && vcm->ex_bitmap && clib_bitmap_get (vcm->ex_bitmap, session_index) && (rv < 0)) { clib_bitmap_set_no_check (except_map, session_index, 1); bits_set++; } else if (rv > 0) { clib_bitmap_set_no_check (read_map, session_index, 1); bits_set++; } })); } if (write_map) { clib_bitmap_foreach (session_index, vcm->wr_bitmap, ({ VCL_SESSION_LOCK(); rv = vppcom_session_at_index (session_index, &session); if (rv < 0) { VCL_SESSION_UNLOCK(); VDBG (0, "VCL<%d>: session %d specified in " "write_map is closed.", getpid (), session_index); bits_set = VPPCOM_EBADFD; goto select_done; } rv = vppcom_session_write_ready (session, session_index); VCL_SESSION_UNLOCK(); if (write_map && (rv > 0)) { clib_bitmap_set_no_check (write_map, session_index, 1); bits_set++; } })); } if (except_map) { clib_bitmap_foreach (session_index, vcm->ex_bitmap, ({ VCL_SESSION_LOCK(); rv = vppcom_session_at_index (session_index, &session); if (rv < 0) { VCL_SESSION_UNLOCK(); VDBG (1, "VCL<%d>: session %d specified in except_map " "is closed.", getpid (), session_index); bits_set = VPPCOM_EBADFD; goto select_done; } rv = vppcom_session_read_ready (session, session_index); VCL_SESSION_UNLOCK(); if (rv < 0) { clib_bitmap_set_no_check (except_map, session_index, 1); bits_set++; } })); } } /* *INDENT-ON* */ } while ((time_to_wait == -1) || (clib_time_now (&vcm->clib_time) < timeout)); select_done: return (bits_set); } static inline void vep_verify_epoll_chain (u32 vep_idx) { vcl_session_t *session; vppcom_epoll_t *vep; int rv; u32 sid = vep_idx; if (VPPCOM_DEBUG <= 1) return; /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ rv = vppcom_session_at_index (vep_idx, &session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", getpid (), vep_idx); goto done; } if (PREDICT_FALSE (!session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); goto done; } vep = &session->vep; clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n" "{\n" " is_vep = %u\n" " is_vep_session = %u\n" " next_sid = 0x%x (%u)\n" " wait_cont_idx = 0x%x (%u)\n" "}\n", getpid (), vep_idx, session->is_vep, session->is_vep_session, vep->next_sid, vep->next_sid, session->wait_cont_idx, session->wait_cont_idx); for (sid = vep->next_sid; sid != ~0; sid = vep->next_sid) { rv = vppcom_session_at_index (sid, &session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid); goto done; } if (PREDICT_FALSE (session->is_vep)) clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!", getpid (), vep_idx); else if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: session (%u) " "is not a vep session!", getpid (), sid); goto done; } vep = &session->vep; if (PREDICT_FALSE (vep->vep_idx != vep_idx)) clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != " "vep_idx (%u)!", getpid (), sid, session->vep.vep_idx, vep_idx); if (session->is_vep_session) { clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n" "{\n" " next_sid = 0x%x (%u)\n" " prev_sid = 0x%x (%u)\n" " vep_idx = 0x%x (%u)\n" " ev.events = 0x%x\n" " ev.data.u64 = 0x%llx\n" " et_mask = 0x%x\n" "}\n", vep_idx, sid, sid, vep->next_sid, vep->next_sid, vep->prev_sid, vep->prev_sid, vep->vep_idx, vep->vep_idx, vep->ev.events, vep->ev.data.u64, vep->et_mask); } } done: clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n", getpid (), vep_idx); } int vppcom_epoll_create (void) { vcl_session_t *vep_session; u32 vep_idx; VCL_SESSION_LOCK (); pool_get (vcm->sessions, vep_session); memset (vep_session, 0, sizeof (*vep_session)); vep_idx = vep_session - vcm->sessions; vep_session->is_vep = 1; vep_session->vep.vep_idx = ~0; vep_session->vep.next_sid = ~0; vep_session->vep.prev_sid = ~0; vep_session->wait_cont_idx = ~0; vep_session->vpp_handle = ~0; vep_session->poll_reg = 0; vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_idx); VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!", getpid (), vep_idx, vep_idx); return (vep_idx); } int vppcom_epoll_ctl (uint32_t vep_idx, int op, uint32_t session_index, struct epoll_event *event) { vcl_session_t *vep_session; vcl_session_t *session; int rv; if (vep_idx == session_index) { clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!", getpid (), vep_idx); return VPPCOM_EINVAL; } VCL_SESSION_LOCK (); rv = vppcom_session_at_index (vep_idx, &vep_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_idx); goto done; } if (PREDICT_FALSE (!vep_session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); rv = VPPCOM_EINVAL; goto done; } ASSERT (vep_session->vep.vep_idx == ~0); ASSERT (vep_session->vep.prev_sid == ~0); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: ERROR: Invalid session_index (%u)!", getpid (), session_index); goto done; } if (PREDICT_FALSE (session->is_vep)) { clib_warning ("ERROR: session_index (%u) is a vep!", vep_idx); rv = VPPCOM_EINVAL; goto done; } switch (op) { case EPOLL_CTL_ADD: if (PREDICT_FALSE (!event)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to " "epoll_event structure!", getpid ()); rv = VPPCOM_EINVAL; goto done; } if (vep_session->vep.next_sid != ~0) { vcl_session_t *next_session; rv = vppcom_session_at_index (vep_session->vep.next_sid, &next_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid " "vep.next_sid (%u) on vep_idx (%u)!", getpid (), vep_session->vep.next_sid, vep_idx); goto done; } ASSERT (next_session->vep.prev_sid == vep_idx); next_session->vep.prev_sid = session_index; } session->vep.next_sid = vep_session->vep.next_sid; session->vep.prev_sid = vep_idx; session->vep.vep_idx = vep_idx; session->vep.et_mask = VEP_DEFAULT_ET_MASK; session->vep.ev = *event; session->is_vep = 0; session->is_vep_session = 1; vep_session->vep.next_sid = session_index; /* VCL Event Register handler */ if (session->session_state & STATE_LISTEN) { /* Register handler for connect_request event on listen_session_index */ vce_event_key_t evk; evk.session_index = session_index; evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED; vep_session->poll_reg = vce_register_handler (&vcm->event_thread, &evk, vce_poll_wait_connect_request_handler_fn, 0 /* No callback args */ ); } VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, " "sid %u, events 0x%x, data 0x%llx!", getpid (), vep_idx, session_index, event->events, event->data.u64); vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64); break; case EPOLL_CTL_MOD: if (PREDICT_FALSE (!event)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to " "epoll_event structure!", getpid ()); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: " "not a vep session!", getpid (), session_index); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: " "vep_idx (%u) != vep_idx (%u)!", getpid (), session_index, session->vep.vep_idx, vep_idx); rv = VPPCOM_EINVAL; goto done; } session->vep.et_mask = VEP_DEFAULT_ET_MASK; session->vep.ev = *event; VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x," " data 0x%llx!", getpid (), vep_idx, session_index, event->events, event->data.u64); break; case EPOLL_CTL_DEL: if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: " "not a vep session!", getpid (), session_index); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: " "vep_idx (%u) != vep_idx (%u)!", getpid (), session_index, session->vep.vep_idx, vep_idx); rv = VPPCOM_EINVAL; goto done; } /* VCL Event Un-register handler */ if ((session->session_state & STATE_LISTEN) && vep_session->poll_reg) { (void) vce_unregister_handler (&vcm->event_thread, vep_session->poll_reg); } vep_session->wait_cont_idx = (vep_session->wait_cont_idx == session_index) ? session->vep.next_sid : vep_session->wait_cont_idx; if (session->vep.prev_sid == vep_idx) vep_session->vep.next_sid = session->vep.next_sid; else { vcl_session_t *prev_session; rv = vppcom_session_at_index (session->vep.prev_sid, &prev_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid " "vep.prev_sid (%u) on sid (%u)!", getpid (), session->vep.prev_sid, session_index); goto done; } ASSERT (prev_session->vep.next_sid == session_index); prev_session->vep.next_sid = session->vep.next_sid; } if (session->vep.next_sid != ~0) { vcl_session_t *next_session; rv = vppcom_session_at_index (session->vep.next_sid, &next_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid " "vep.next_sid (%u) on sid (%u)!", getpid (), session->vep.next_sid, session_index); goto done; } ASSERT (next_session->vep.prev_sid == session_index); next_session->vep.prev_sid = session->vep.prev_sid; } memset (&session->vep, 0, sizeof (session->vep)); session->vep.next_sid = ~0; session->vep.prev_sid = ~0; session->vep.vep_idx = ~0; session->is_vep_session = 0; VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!", getpid (), vep_idx, session_index); vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_idx); break; default: clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op); rv = VPPCOM_EINVAL; } vep_verify_epoll_chain (vep_idx); done: VCL_SESSION_UNLOCK (); return rv; } int vppcom_epoll_wait (uint32_t vep_idx, struct epoll_event *events, int maxevents, double wait_for_time) { vcl_session_t *vep_session; int rv; f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; u32 keep_trying = 1; int num_ev = 0; u32 vep_next_sid, wait_cont_idx; u8 is_vep; if (PREDICT_FALSE (maxevents <= 0)) { clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!", getpid (), maxevents); return VPPCOM_EINVAL; } memset (events, 0, sizeof (*events) * maxevents); VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session); vep_next_sid = vep_session->vep.next_sid; is_vep = vep_session->is_vep; wait_cont_idx = vep_session->wait_cont_idx; VCL_SESSION_UNLOCK (); if (PREDICT_FALSE (!is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); rv = VPPCOM_EINVAL; goto done; } if (PREDICT_FALSE (vep_next_sid == ~0)) { VDBG (1, "VCL<%d>: WARNING: vep_idx (%u) is empty!", getpid (), vep_idx); goto done; } do { u32 sid; u32 next_sid = ~0; vcl_session_t *session; for (sid = (wait_cont_idx == ~0) ? vep_next_sid : wait_cont_idx; sid != ~0; sid = next_sid) { u32 session_events, et_mask, clear_et_mask, session_vep_idx; u8 add_event, is_vep_session; int ready; u64 session_ev_data; VCL_SESSION_LOCK_AND_GET (sid, &session); next_sid = session->vep.next_sid; session_events = session->vep.ev.events; et_mask = session->vep.et_mask; is_vep = session->is_vep; is_vep_session = session->is_vep_session; session_vep_idx = session->vep.vep_idx; session_ev_data = session->vep.ev.data.u64; VCL_SESSION_UNLOCK (); if (PREDICT_FALSE (is_vep)) { VDBG (0, "VCL<%d>: ERROR: sid (%u) is a vep!", getpid (), vep_idx); rv = VPPCOM_EINVAL; goto done; } if (PREDICT_FALSE (!is_vep_session)) { VDBG (0, "VCL<%d>: ERROR: session (%u) is not " "a vep session!", getpid (), sid); rv = VPPCOM_EINVAL; goto done; } if (PREDICT_FALSE (session_vep_idx != vep_idx)) { clib_warning ("VCL<%d>: ERROR: session (%u) " "vep_idx (%u) != vep_idx (%u)!", getpid (), sid, session_vep_idx, vep_idx); rv = VPPCOM_EINVAL; goto done; } add_event = clear_et_mask = 0; if (EPOLLIN & session_events) { VCL_SESSION_LOCK_AND_GET (sid, &session); ready = vppcom_session_read_ready (session, sid); VCL_SESSION_UNLOCK (); if ((ready > 0) && (EPOLLIN & et_mask)) { add_event = 1; events[num_ev].events |= EPOLLIN; if (((EPOLLET | EPOLLIN) & session_events) == (EPOLLET | EPOLLIN)) clear_et_mask |= EPOLLIN; } else if (ready < 0) { add_event = 1; switch (ready) { case VPPCOM_ECONNRESET: events[num_ev].events |= EPOLLHUP | EPOLLRDHUP; break; default: events[num_ev].events |= EPOLLERR; break; } } } if (EPOLLOUT & session_events) { VCL_SESSION_LOCK_AND_GET (sid, &session); ready = vppcom_session_write_ready (session, sid); VCL_SESSION_UNLOCK (); if ((ready > 0) && (EPOLLOUT & et_mask)) { add_event = 1; events[num_ev].events |= EPOLLOUT; if (((EPOLLET | EPOLLOUT) & session_events) == (EPOLLET | EPOLLOUT)) clear_et_mask |= EPOLLOUT; } else if (ready < 0) { add_event = 1; switch (ready) { case VPPCOM_ECONNRESET: events[num_ev].events |= EPOLLHUP; break; default: events[num_ev].events |= EPOLLERR; break; } } } if (add_event) { events[num_ev].data.u64 = session_ev_data; if (EPOLLONESHOT & session_events) { VCL_SESSION_LOCK_AND_GET (sid, &session); session->vep.ev.events = 0; VCL_SESSION_UNLOCK (); } num_ev++; if (num_ev == maxevents) { VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session); vep_session->wait_cont_idx = next_sid; VCL_SESSION_UNLOCK (); goto done; } } if (wait_cont_idx != ~0) { if (next_sid == ~0) next_sid = vep_next_sid; else if (next_sid == wait_cont_idx) next_sid = ~0; } } if (wait_for_time != -1) keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0; } while ((num_ev == 0) && keep_trying); if (wait_cont_idx != ~0) { VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session); vep_session->wait_cont_idx = ~0; VCL_SESSION_UNLOCK (); } done: return (rv != VPPCOM_OK) ? rv : num_ev; } int vppcom_session_attr (uint32_t session_index, uint32_t op, void *buffer, uint32_t * buflen) { vcl_session_t *session; int rv = VPPCOM_OK; u32 *flags = buffer; vppcom_endpt_t *ep = buffer; VCL_SESSION_LOCK_AND_GET (session_index, &session); ASSERT (session); switch (op) { case VPPCOM_ATTR_GET_NREAD: rv = vppcom_session_read_ready (session, session_index); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d", getpid (), rv); break; case VPPCOM_ATTR_GET_NWRITE: rv = vppcom_session_write_ready (session, session_index); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d", getpid (), session_index, rv); break; case VPPCOM_ATTR_GET_FLAGS: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags)))) { *flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK)); *buflen = sizeof (*flags); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, " "is_nonblocking = %u", getpid (), session_index, *flags, VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_FLAGS: if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags)))) { if (*flags & O_NONBLOCK) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x," " is_nonblocking = %u", getpid (), session_index, *flags, VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_PEER_ADDR: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.rmt_port; if (session->transport.is_ip4) clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, " "addr = %U, port %u", getpid (), session_index, ep->is_ip4, format_ip46_address, &session->transport.rmt_ip, ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LCL_ADDR: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.lcl_port; if (session->transport.is_ip4) clib_memcpy (ep->ip, &session->transport.lcl_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.lcl_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u," " addr = %U port %d", getpid (), session_index, ep->is_ip4, format_ip46_address, &session->transport.lcl_ip, ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LIBC_EPFD: rv = session->libc_epfd; VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", getpid (), rv); break; case VPPCOM_ATTR_SET_LIBC_EPFD: if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (session->libc_epfd)))) { session->libc_epfd = *(int *) buffer; *buflen = sizeof (session->libc_epfd); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, " "buflen %d", getpid (), session->libc_epfd, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_PROTOCOL: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = session->session_type; *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d", getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LISTEN: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_ERROR: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = 0; *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TX_FIFO_LEN: if (buffer && buflen && (*buflen >= sizeof (u32))) { /* VPP-TBD */ *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size : session->tx_fifo ? session->tx_fifo->nitems : vcm->cfg.tx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), *(size_t *) buffer, *(size_t *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TX_FIFO_LEN: if (buffer && buflen && (*buflen == sizeof (u32))) { /* VPP-TBD */ session->sndbuf_size = *(u32 *) buffer; VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), session->sndbuf_size, session->sndbuf_size, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_RX_FIFO_LEN: if (buffer && buflen && (*buflen >= sizeof (u32))) { /* VPP-TBD */ *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size : session->rx_fifo ? session->rx_fifo->nitems : vcm->cfg.rx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), *(size_t *) buffer, *(size_t *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_RX_FIFO_LEN: if (buffer && buflen && (*buflen == sizeof (u32))) { /* VPP-TBD */ session->rcvbuf_size = *(u32 *) buffer; VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), session->sndbuf_size, session->sndbuf_size, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_REUSEADDR: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEADDR); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, " "buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_REUSEADDR: if (buffer && buflen && (*buflen == sizeof (int)) && !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN)) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d," " #VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEADDR), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_REUSEPORT: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEPORT); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d," " #VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_REUSEPORT: if (buffer && buflen && (*buflen == sizeof (int)) && !VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN)) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d," " #VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEPORT), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_BROADCAST: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_BROADCAST); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d," " #VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_BROADCAST: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_BROADCAST), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_V6ONLY: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_V6ONLY); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, " "#VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_V6ONLY: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_V6ONLY), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_KEEPALIVE: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_KEEPALIVE); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, " "#VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_KEEPALIVE: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_KEEPALIVE), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_NODELAY: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_NODELAY); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, " "#VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_NODELAY: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_NODELAY), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_KEEPIDLE: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, " "#VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_KEEPIDLE: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_KEEPINTVL: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL); *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, " "#VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_KEEPINTVL: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL); VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, " "#VPP-TBD#", getpid (), VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_USER_MSS: if (buffer && buflen && (*buflen >= sizeof (u32))) { /* VPP-TBD */ *(u32 *) buffer = session->user_mss; *buflen = sizeof (int); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d," " #VPP-TBD#", getpid (), *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_USER_MSS: if (buffer && buflen && (*buflen == sizeof (u32))) { /* VPP-TBD */ session->user_mss = *(u32 *) buffer; VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, " "#VPP-TBD#", getpid (), session->user_mss, *buflen); } else rv = VPPCOM_EINVAL; break; default: rv = VPPCOM_EINVAL; break; } done: VCL_SESSION_UNLOCK (); return rv; } int vppcom_session_recvfrom (uint32_t session_index, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { int rv = VPPCOM_OK; vcl_session_t *session = 0; if (ep) { VCL_SESSION_LOCK (); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!", getpid (), session_index); rv = VPPCOM_EBADFD; VCL_SESSION_UNLOCK (); goto done; } ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.rmt_port; if (session->transport.is_ip4) clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); VCL_SESSION_UNLOCK (); } if (flags == 0) rv = vppcom_session_read (session_index, buffer, buflen); else if (flags & MSG_PEEK) rv = vppcom_session_peek (session_index, buffer, buflen); else { clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d", getpid (), flags); rv = VPPCOM_EAFNOSUPPORT; } done: return rv; } int vppcom_session_sendto (uint32_t session_index, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { if (!buffer) return VPPCOM_EINVAL; if (ep) { // TBD return VPPCOM_EINVAL; } if (flags) { // TBD check the flags and do the right thing VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.", getpid (), flags, flags); } return (vppcom_session_write (session_index, buffer, buflen)); } int vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time) { f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; u32 i, keep_trying = 1; int rv, num_ev = 0; VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f", getpid (), vp, n_sids, wait_for_time); if (!vp) return VPPCOM_EFAULT; do { vcl_session_t *session; for (i = 0; i < n_sids; i++) { ASSERT (vp[i].revents); VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); VCL_SESSION_UNLOCK (); if (*vp[i].revents) *vp[i].revents = 0; if (POLLIN & vp[i].events) { VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); rv = vppcom_session_read_ready (session, vp[i].sid); VCL_SESSION_UNLOCK (); if (rv > 0) { *vp[i].revents |= POLLIN; num_ev++; } else if (rv < 0) { switch (rv) { case VPPCOM_ECONNRESET: *vp[i].revents = POLLHUP; break; default: *vp[i].revents = POLLERR; break; } num_ev++; } } if (POLLOUT & vp[i].events) { VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); rv = vppcom_session_write_ready (session, vp[i].sid); VCL_SESSION_UNLOCK (); if (rv > 0) { *vp[i].revents |= POLLOUT; num_ev++; } else if (rv < 0) { switch (rv) { case VPPCOM_ECONNRESET: *vp[i].revents = POLLHUP; break; default: *vp[i].revents = POLLERR; break; } num_ev++; } } if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET() { done: *vp[i].revents = POLLNVAL; num_ev++; } } if (wait_for_time != -1) keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0; } while ((num_ev == 0) && keep_trying); if (VPPCOM_DEBUG > 3) { clib_warning ("VCL<%d>: returning %d", getpid (), num_ev); for (i = 0; i < n_sids; i++) { clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, " ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid, vp[i].events, *vp[i].revents); } } return num_ev; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */