X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvcl%2Fvppcom.c;h=1622409c0f9d7ec81d09ccf5c9a643a51042cc98;hb=2f630188b91b58eca379c9cc9944986af3e00ae5;hp=ce47766b5c911baba48b7cee95bdbafc1400c5e1;hpb=d4c709222b67f6c45ee7064637f69de9e9509222;p=vpp.git diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index ce47766b5c9..1622409c0f9 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -23,23 +23,17 @@ __thread uword __vcl_worker_index = ~0; static int -vcl_wait_for_segment (u64 segment_handle) +vcl_segment_is_not_mounted (vcl_worker_t * wrk, u64 segment_handle) { - vcl_worker_t *wrk = vcl_worker_get_current (); - u32 wait_for_seconds = 10, segment_index; - f64 timeout; + u32 segment_index; if (segment_handle == VCL_INVALID_SEGMENT_HANDLE) return 0; - timeout = clib_time_now (&wrk->clib_time) + wait_for_seconds; - while (clib_time_now (&wrk->clib_time) < timeout) - { - segment_index = vcl_segment_table_lookup (segment_handle); - if (segment_index != VCL_INVALID_SEGMENT_INDEX) - return 0; - usleep (10); - } + segment_index = vcl_segment_table_lookup (segment_handle); + if (segment_index != VCL_INVALID_SEGMENT_INDEX) + return 0; + return 1; } @@ -66,8 +60,8 @@ vppcom_session_state_str (vcl_session_state_t state) switch (state) { - case STATE_START: - st = "STATE_START"; + case STATE_CLOSED: + st = "STATE_CLOSED"; break; case STATE_CONNECT: @@ -90,8 +84,8 @@ vppcom_session_state_str (vcl_session_state_t state) st = "STATE_DISCONNECT"; break; - case STATE_FAILED: - st = "STATE_FAILED"; + case STATE_DETACHED: + st = "STATE_DETACHED"; break; case STATE_UPDATED: @@ -215,6 +209,8 @@ vcl_send_session_listen (vcl_worker_t * wrk, vcl_session_t * s) clib_memcpy_fast (&mp->ip, &s->transport.lcl_ip, sizeof (mp->ip)); mp->port = s->transport.lcl_port; mp->proto = s->session_type; + if (s->flags & VCL_SESSION_F_CONNECTED) + mp->flags = TRANSPORT_CFG_F_CONNECTED; app_send_ctrl_evt_to_vpp (mq, app_evt); } @@ -237,7 +233,10 @@ vcl_send_session_connect (vcl_worker_t * wrk, vcl_session_t * s) clib_memcpy_fast (&mp->ip, &s->transport.rmt_ip, sizeof (mp->ip)); clib_memcpy_fast (&mp->lcl_ip, &s->transport.lcl_ip, sizeof (mp->lcl_ip)); mp->port = s->transport.rmt_port; + mp->lcl_port = s->transport.lcl_port; mp->proto = s->session_type; + if (s->flags & VCL_SESSION_F_CONNECTED) + mp->flags |= TRANSPORT_CFG_F_CONNECTED; app_send_ctrl_evt_to_vpp (mq, app_evt); } @@ -352,6 +351,39 @@ vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s, app_send_ctrl_evt_to_vpp (mq, app_evt); } +int +vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len) +{ + app_session_evt_t _app_evt, *app_evt = &_app_evt; + session_app_wrk_rpc_msg_t *mp; + vcl_worker_t *dst_wrk, *wrk; + svm_msg_q_t *mq; + int ret = -1; + + if (data_len > sizeof (mp->data)) + goto done; + + clib_spinlock_lock (&vcm->workers_lock); + + dst_wrk = vcl_worker_get_if_valid (dst_wrk_index); + if (!dst_wrk) + goto done; + + wrk = vcl_worker_get_current (); + mq = vcl_worker_ctrl_mq (wrk); + app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_WRK_RPC); + mp = (session_app_wrk_rpc_msg_t *) app_evt->evt->data; + mp->client_index = wrk->my_client_index; + mp->wrk_index = dst_wrk->vpp_wrk_index; + clib_memcpy (mp->data, data, data_len); + app_send_ctrl_evt_to_vpp (mq, app_evt); + ret = 0; + +done: + clib_spinlock_unlock (&vcm->workers_lock); + return ret; +} + static u32 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp, u32 ls_index) @@ -371,9 +403,9 @@ vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp, goto error; } - if (vcl_wait_for_segment (mp->segment_handle)) + if (vcl_segment_is_not_mounted (wrk, mp->segment_handle)) { - VDBG (0, "ERROR: segment for session %u couldn't be mounted!", + VDBG (0, "ERROR: segment for session %u is not mounted!", session->session_index); goto error; } @@ -448,8 +480,8 @@ vcl_session_connected_handler (vcl_worker_t * wrk, if (mp->retval) { VDBG (0, "ERROR: session index %u: connect failed! %U", - session_index, format_api_error, ntohl (mp->retval)); - session->session_state = STATE_FAILED | STATE_DISCONNECT; + session_index, format_session_error, mp->retval); + session->session_state = STATE_DETACHED | STATE_DISCONNECT; session->vpp_handle = mp->handle; return session_index; } @@ -459,11 +491,11 @@ vcl_session_connected_handler (vcl_worker_t * wrk, svm_msg_q_t *); rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); - if (vcl_wait_for_segment (mp->segment_handle)) + if (vcl_segment_is_not_mounted (wrk, mp->segment_handle)) { - VDBG (0, "segment for session %u couldn't be mounted!", + VDBG (0, "segment for session %u is not mounted!", session->session_index); - session->session_state = STATE_FAILED | STATE_DISCONNECT; + session->session_state = STATE_DETACHED | STATE_DISCONNECT; vcl_send_session_disconnect (wrk, session); return session_index; } @@ -481,11 +513,11 @@ vcl_session_connected_handler (vcl_worker_t * wrk, { session->ct_rx_fifo = uword_to_pointer (mp->ct_rx_fifo, svm_fifo_t *); session->ct_tx_fifo = uword_to_pointer (mp->ct_tx_fifo, svm_fifo_t *); - if (vcl_wait_for_segment (mp->ct_segment_handle)) + if (vcl_segment_is_not_mounted (wrk, mp->ct_segment_handle)) { - VDBG (0, "ct segment for session %u couldn't be mounted!", + VDBG (0, "ct segment for session %u is not mounted!", session->session_index); - session->session_state = STATE_FAILED | STATE_DISCONNECT; + session->session_state = STATE_DETACHED | STATE_DISCONNECT; vcl_send_session_disconnect (wrk, session); return session_index; } @@ -553,7 +585,8 @@ vcl_session_reset_handler (vcl_worker_t * wrk, return VCL_INVALID_SESSION_INDEX; } - session->session_state = STATE_DISCONNECT; + if (session->session_state != STATE_CLOSED) + session->session_state = STATE_DISCONNECT; VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle); return sid; } @@ -568,10 +601,10 @@ vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp) if (mp->retval) { VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle, - format_api_error, mp->retval); + format_session_error, mp->retval); if (session) { - session->session_state = STATE_FAILED; + session->session_state = STATE_DETACHED; session->vpp_handle = mp->handle; return sid; } @@ -595,7 +628,7 @@ vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp) vec_validate (wrk->vpp_event_queues, 0); wrk->vpp_event_queues[0] = session->vpp_evt_q; - if (session->is_dgram) + if (vcl_session_is_cl (session)) { svm_fifo_t *rx_fifo, *tx_fifo; session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); @@ -618,15 +651,25 @@ vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data) vcl_session_t *s; s = vcl_session_get_w_vpp_handle (wrk, mp->handle); - if (!s || s->session_state != STATE_DISCONNECT) + if (!s) { VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle); return; } + if (s->session_state != STATE_DISCONNECT) + { + /* Connected udp listener */ + if (s->session_type == VPPCOM_PROTO_UDP + && s->session_state == STATE_CLOSED) + return; + + VDBG (0, "Unlisten session in wrong state %llx", mp->handle); + return; + } if (mp->retval) VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U", - s->session_index, mp->handle, format_api_error, ntohl (mp->retval)); + s->session_index, mp->handle, format_session_error, mp->retval); if (mp->context != wrk->wrk_index) VDBG (0, "wrong context"); @@ -635,6 +678,38 @@ vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data) vcl_session_free (wrk, s); } +static void +vcl_session_migrated_handler (vcl_worker_t * wrk, void *data) +{ + session_migrated_msg_t *mp = (session_migrated_msg_t *) data; + vcl_session_t *s; + + s = vcl_session_get_w_vpp_handle (wrk, mp->handle); + if (!s) + { + VDBG (0, "Migrated notification with wrong handle %llx", mp->handle); + return; + } + + s->vpp_thread_index = mp->vpp_thread_index; + s->vpp_handle = mp->new_handle; + s->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); + + vec_validate (wrk->vpp_event_queues, s->vpp_thread_index); + wrk->vpp_event_queues[s->vpp_thread_index] = s->vpp_evt_q; + + vcl_session_table_del_vpp_handle (wrk, mp->handle); + vcl_session_table_add_vpp_handle (wrk, mp->new_handle, s->session_index); + + /* Generate new tx event if we have outstanding data */ + if (svm_fifo_has_event (s->tx_fifo)) + app_send_io_evt_to_vpp (s->vpp_evt_q, s->tx_fifo->master_session_index, + SESSION_IO_EVT_TX, SVM_Q_WAIT); + + VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle, + s->vpp_thread_index, mp->new_handle); +} + static vcl_session_t * vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg) { @@ -655,6 +730,7 @@ vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg) } clib_fifo_add2 (session->accept_evts_fifo, vcl_msg); + vcl_msg->flags = 0; vcl_msg->accepted_msg = *msg; /* Session handle points to listener until fully accepted by app */ vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index); @@ -675,6 +751,10 @@ vcl_session_disconnected_handler (vcl_worker_t * wrk, return 0; } + /* Late disconnect notification on a session that has been closed */ + if (session->session_state == STATE_CLOSED) + return 0; + /* Caught a disconnect before actually accepting the session */ if (session->session_state == STATE_LISTEN) { @@ -684,10 +764,50 @@ vcl_session_disconnected_handler (vcl_worker_t * wrk, return 0; } - session->session_state = STATE_VPP_CLOSING; + /* If not already reset change state */ + if (session->session_state != STATE_DISCONNECT) + session->session_state = STATE_VPP_CLOSING; + return session; } +static void +vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data) +{ + session_cleanup_msg_t *msg; + vcl_session_t *session; + + msg = (session_cleanup_msg_t *) data; + session = vcl_session_get_w_vpp_handle (wrk, msg->handle); + if (!session) + { + VDBG (0, "disconnect confirmed for unknown handle 0x%llx", msg->handle); + return; + } + + if (msg->type == SESSION_CLEANUP_TRANSPORT) + { + /* Transport was cleaned up before we confirmed close. Probably the + * app is still waiting for some data that cannot be delivered. + * Confirm close to make sure everything is cleaned up */ + if (session->session_state == STATE_VPP_CLOSING) + vcl_session_cleanup (wrk, session, vcl_session_handle (session), + 1 /* do_disconnect */ ); + return; + } + + vcl_session_table_del_vpp_handle (wrk, msg->handle); + /* Should not happen. App did not close the connection so don't free it. */ + if (session->session_state != STATE_CLOSED) + { + VDBG (0, "app did not close session %d", session->session_index); + session->session_state = STATE_DETACHED; + session->vpp_handle = VCL_INVALID_SESSION_HANDLE; + return; + } + vcl_session_free (wrk, session); +} + static void vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data) { @@ -715,9 +835,9 @@ vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data) VDBG (0, "unknown handle 0x%llx", msg->handle); return; } - if (vcl_wait_for_segment (msg->segment_handle)) + if (vcl_segment_is_not_mounted (wrk, msg->segment_handle)) { - clib_warning ("segment for session %u couldn't be mounted!", + clib_warning ("segment for session %u is not mounted!", s->session_index); return; } @@ -737,6 +857,57 @@ vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data) s->vpp_handle, wrk->wrk_index); } +static void +vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data) +{ + ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM; + session_app_add_segment_msg_t *msg; + u64 segment_handle; + int fd = -1; + + msg = (session_app_add_segment_msg_t *) data; + + if (msg->fd_flags) + { + vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, &fd, 1, 5); + seg_type = SSVM_SEGMENT_MEMFD; + } + + segment_handle = msg->segment_handle; + if (segment_handle == VCL_INVALID_SEGMENT_HANDLE) + { + clib_warning ("invalid segment handle"); + return; + } + + if (vcl_segment_attach (segment_handle, (char *) msg->segment_name, + seg_type, fd)) + { + VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name); + return; + } + + VDBG (1, "mapped new segment '%s' size %d", msg->segment_name, + msg->segment_size); +} + +static void +vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data) +{ + session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data; + vcl_segment_detach (msg->segment_handle); + VDBG (1, "Unmapped segment: %d", msg->segment_handle); +} + +static void +vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data) +{ + if (!vcm->wrk_rpc_fn) + return; + + (vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data); +} + static int vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) { @@ -776,12 +947,27 @@ vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_MIGRATED: + vcl_session_migrated_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_CLEANUP: + vcl_session_cleanup_handler (wrk, e->data); + break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_ADD_SEGMENT: + vcl_session_app_add_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_DEL_SEGMENT: + vcl_session_app_del_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: clib_warning ("unhandled %u", e->event_type); } @@ -810,7 +996,7 @@ vppcom_wait_for_session_state_change (u32 session_index, { return VPPCOM_OK; } - if (session->session_state & STATE_FAILED) + if (session->session_state & STATE_DETACHED) { return VPPCOM_ECONNREFUSED; } @@ -1015,17 +1201,13 @@ vppcom_app_exit (void) vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ ); vcl_set_worker_index (~0); vcl_elog_stop (vcm); - if (vec_len (vcm->workers) == 1) - vppcom_disconnect_from_vpp (); - else - vl_client_send_disconnect (1 /* vpp should cleanup */ ); } /* * VPPCOM Public API functions */ int -vppcom_app_create (char *app_name) +vppcom_app_create (const char *app_name) { vppcom_cfg_t *vcl_cfg = &vcm->cfg; int rv; @@ -1088,35 +1270,39 @@ vppcom_app_create (char *app_name) void vppcom_app_destroy (void) { - int rv; - f64 orig_app_timeout; + vcl_worker_t *wrk, *current_wrk; + struct dlmallinfo mi; + mspace heap; if (!pool_elts (vcm->workers)) return; vcl_evt (VCL_EVT_DETACH, vcm); - if (pool_elts (vcm->workers) == 1) - { - vcl_send_app_detach (vcl_worker_get_current ()); - orig_app_timeout = vcm->cfg.app_timeout; - vcm->cfg.app_timeout = 2.0; - rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED); - vcm->cfg.app_timeout = orig_app_timeout; - if (PREDICT_FALSE (rv)) - VDBG (0, "application detach timed out! returning %d (%s)", rv, - vppcom_retval_str (rv)); - vec_free (vcm->app_name); - vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ ); - } - else - { - vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ ); - } + current_wrk = vcl_worker_get_current (); + + /* *INDENT-OFF* */ + pool_foreach (wrk, vcm->workers, ({ + if (current_wrk != wrk) + vcl_worker_cleanup (wrk, 0 /* notify vpp */ ); + })); + /* *INDENT-ON* */ + + vcl_send_app_detach (current_wrk); + vppcom_disconnect_from_vpp (); + vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ ); - vcl_set_worker_index (~0); vcl_elog_stop (vcm); - vl_client_disconnect_from_vlib (); + + /* + * Free the heap and fix vcm + */ + heap = clib_mem_get_heap (); + mi = mspace_mallinfo (heap); + munmap (mspace_least_addr (heap), mi.arena); + + vcm = &_vppcom_main; + vcm->is_init = 0; } int @@ -1128,7 +1314,7 @@ vppcom_session_create (u8 proto, u8 is_nonblocking) session = vcl_session_alloc (wrk); session->session_type = proto; - session->session_state = STATE_START; + session->session_state = STATE_CLOSED; session->vpp_handle = ~0; session->is_dgram = vcl_proto_is_dgram (proto); @@ -1173,55 +1359,64 @@ vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session, next_sh = session->vep.next_sh; } + goto cleanup; } - else + + if (session->is_vep_session) { - if (session->is_vep_session) - { - rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, sh, 0); - if (rv < 0) - VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u " - "failed! rv %d (%s)", session->session_index, vpp_handle, - vep_sh, rv, vppcom_retval_str (rv)); - } + rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, sh, 0); + if (rv < 0) + VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u " + "failed! rv %d (%s)", session->session_index, vpp_handle, + vep_sh, rv, vppcom_retval_str (rv)); + } - if (!do_disconnect) - { - VDBG (1, "session %u [0x%llx] disconnect skipped", - session->session_index, vpp_handle); - goto cleanup; - } + if (!do_disconnect) + { + VDBG (1, "session %u [0x%llx] disconnect skipped", + session->session_index, vpp_handle); + goto cleanup; + } - if (state & STATE_LISTEN) - { - rv = vppcom_session_unbind (sh); - if (PREDICT_FALSE (rv < 0)) - VDBG (0, "session %u [0x%llx]: listener unbind failed! " - "rv %d (%s)", session->session_index, vpp_handle, rv, - vppcom_retval_str (rv)); - return rv; - } - else if ((state & STATE_OPEN) - || (vcl_session_is_connectable_listener (wrk, session))) - { - rv = vppcom_session_disconnect (sh); - if (PREDICT_FALSE (rv < 0)) - VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!" - " rv %d (%s)", session->session_index, vpp_handle, - rv, vppcom_retval_str (rv)); - } - else if (state == STATE_DISCONNECT) - { - svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session); - vcl_send_session_reset_reply (mq, wrk->my_client_index, - session->vpp_handle, 0); - } + if (state & STATE_LISTEN) + { + rv = vppcom_session_unbind (sh); + if (PREDICT_FALSE (rv < 0)) + VDBG (0, "session %u [0x%llx]: listener unbind failed! " + "rv %d (%s)", session->session_index, vpp_handle, rv, + vppcom_retval_str (rv)); + return rv; + } + else if ((state & STATE_OPEN) + || (vcl_session_is_connectable_listener (wrk, session))) + { + rv = vppcom_session_disconnect (sh); + if (PREDICT_FALSE (rv < 0)) + VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!" + " rv %d (%s)", session->session_index, vpp_handle, + rv, vppcom_retval_str (rv)); + } + else if (state == STATE_DISCONNECT) + { + svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session); + vcl_send_session_reset_reply (mq, wrk->my_client_index, + session->vpp_handle, 0); + } + else if (state == STATE_DETACHED) + { + /* Should not happen. VPP cleaned up before app confirmed close */ + VDBG (0, "vpp freed session %d before close", session->session_index); + goto free_session; } - VDBG (0, "session %u [0x%llx] removed", session->session_index, vpp_handle); + session->session_state = STATE_CLOSED; + + /* Session is removed only after vpp confirms the disconnect */ + return rv; cleanup: vcl_session_table_del_vpp_handle (wrk, vpp_handle); +free_session: vcl_session_free (wrk, session); vcl_evt (VCL_EVT_CLOSE, session, rv); @@ -1409,14 +1604,6 @@ vppcom_unformat_proto (uint8_t * proto, char *proto_str) *proto = VPPCOM_PROTO_UDP; else if (!strcmp (proto_str, "udp")) *proto = VPPCOM_PROTO_UDP; - else if (!strcmp (proto_str, "UDPC")) - *proto = VPPCOM_PROTO_UDPC; - else if (!strcmp (proto_str, "udpc")) - *proto = VPPCOM_PROTO_UDPC; - else if (!strcmp (proto_str, "SCTP")) - *proto = VPPCOM_PROTO_SCTP; - else if (!strcmp (proto_str, "sctp")) - *proto = VPPCOM_PROTO_SCTP; else if (!strcmp (proto_str, "TLS")) *proto = VPPCOM_PROTO_TLS; else if (!strcmp (proto_str, "tls")) @@ -1474,7 +1661,7 @@ vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep, e = svm_msg_q_msg_data (wrk->app_event_queue, &msg); if (e->event_type != SESSION_CTRL_EVT_ACCEPTED) { - VDBG (0, "discarded event: %u", e->event_type); + vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (wrk->app_event_queue, &msg); continue; } @@ -1539,25 +1726,6 @@ handle: return vcl_session_handle (client_session); } -static void -vcl_ip_copy_from_ep (ip46_address_t * ip, vppcom_endpt_t * ep) -{ - if (ep->is_ip4) - clib_memcpy_fast (&ip->ip4, ep->ip, sizeof (ip4_address_t)); - else - clib_memcpy_fast (&ip->ip6, ep->ip, sizeof (ip6_address_t)); -} - -void -vcl_ip_copy_to_ep (ip46_address_t * ip, vppcom_endpt_t * ep, u8 is_ip4) -{ - ep->is_ip4 = is_ip4; - if (is_ip4) - clib_memcpy_fast (ep->ip, &ip->ip4, sizeof (ip4_address_t)); - else - clib_memcpy_fast (ep->ip, &ip->ip6, sizeof (ip6_address_t)); -} - int vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep) { @@ -1592,13 +1760,24 @@ vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep) return VPPCOM_OK; } + /* Attempt to connect a connectionless listener */ + if (PREDICT_FALSE (session->session_state & STATE_LISTEN)) + { + if (session->session_type != VPPCOM_PROTO_UDP) + return VPPCOM_EINVAL; + vcl_send_session_unlisten (wrk, session); + session->session_state = STATE_CLOSED; + } + session->transport.is_ip4 = server_ep->is_ip4; vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep); session->transport.rmt_port = server_ep->port; session->parent_handle = VCL_INVALID_SESSION_HANDLE; + session->flags |= VCL_SESSION_F_CONNECTED; - VDBG (0, "session handle %u: connecting to server %s %U " + VDBG (0, "session handle %u (%s): connecting to peer %s %U " "port %d proto %s", session_handle, + vppcom_session_state_str (session->session_state), session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? @@ -1884,13 +2063,21 @@ vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) return (e->event_type == SESSION_IO_EVT_TX && e->session_index == sid); } -static inline int -vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, - u8 is_flush) +always_inline u8 +vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram) +{ + u32 max_enq = svm_fifo_max_enqueue_prod (f); + if (is_dgram) + return max_enq >= (sizeof (session_dgram_hdr_t) + len); + else + return max_enq > 0; +} + +always_inline int +vppcom_session_write_inline (vcl_worker_t * wrk, vcl_session_t * s, void *buf, + size_t n, u8 is_flush, u8 is_dgram) { - vcl_worker_t *wrk = vcl_worker_get_current (); int n_write, is_nonblocking; - vcl_session_t *s = 0; session_evt_type_t et; svm_msg_q_msg_t msg; svm_fifo_t *tx_fifo; @@ -1901,10 +2088,6 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, if (PREDICT_FALSE (!buf || n == 0)) return VPPCOM_EINVAL; - s = vcl_session_get_w_handle (wrk, session_handle); - if (PREDICT_FALSE (!s)) - return VPPCOM_EBADFD; - if (PREDICT_FALSE (s->is_vep)) { VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll" @@ -1925,13 +2108,13 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK); mq = wrk->app_event_queue; - if (svm_fifo_is_full_prod (tx_fifo)) + if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram)) { if (is_nonblocking) { return VPPCOM_EWOULDBLOCK; } - while (svm_fifo_is_full_prod (tx_fifo)) + while (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram)) { svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); if (vcl_session_is_closing (s)) @@ -1954,7 +2137,7 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, if (is_flush && !is_ct) et = SESSION_IO_EVT_TX_FLUSH; - if (s->is_dgram) + if (is_dgram) n_write = app_send_dgram_raw (tx_fifo, &s->transport, s->vpp_evt_q, buf, n, et, 0 /* do_evt */ , SVM_Q_WAIT); @@ -1977,15 +2160,29 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, int vppcom_session_write (uint32_t session_handle, void *buf, size_t n) { - return vppcom_session_write_inline (session_handle, buf, n, - 0 /* is_flush */ ); + vcl_worker_t *wrk = vcl_worker_get_current (); + vcl_session_t *s; + + s = vcl_session_get_w_handle (wrk, session_handle); + if (PREDICT_FALSE (!s)) + return VPPCOM_EBADFD; + + return vppcom_session_write_inline (wrk, s, buf, n, + 0 /* is_flush */ , s->is_dgram ? 1 : 0); } int vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n) { - return vppcom_session_write_inline (session_handle, buf, n, - 1 /* is_flush */ ); + vcl_worker_t *wrk = vcl_worker_get_current (); + vcl_session_t *s; + + s = vcl_session_get_w_handle (wrk, session_handle); + if (PREDICT_FALSE (!s)) + return VPPCOM_EBADFD; + + return vppcom_session_write_inline (wrk, s, buf, n, + 1 /* is_flush */ , s->is_dgram ? 1 : 0); } #define vcl_fifo_rx_evt_valid_or_break(_s) \ @@ -2001,7 +2198,7 @@ if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \ } \ else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \ { \ - svm_fifo_unset_event (_s->ct_rx_fifo); \ + svm_fifo_unset_event (_s->rx_fifo); /* rx evts on actual fifo*/ \ if (svm_fifo_is_empty (_s->ct_rx_fifo)) \ break; \ } \ @@ -2023,7 +2220,7 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_IO_EVT_RX: sid = e->session_index; session = vcl_session_get (wrk, sid); - if (!session) + if (!session || !vcl_session_is_open (session)) break; vcl_fifo_rx_evt_valid_or_break (session); if (sid < n_bits && read_map) @@ -2035,7 +2232,7 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_IO_EVT_TX: sid = e->session_index; session = vcl_session_get (wrk, sid); - if (!session) + if (!session || !vcl_session_is_open (session)) break; if (sid < n_bits && write_map) { @@ -2089,12 +2286,27 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_MIGRATED: + vcl_session_migrated_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_CLEANUP: + vcl_session_cleanup_handler (wrk, e->data); + break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_ADD_SEGMENT: + vcl_session_app_add_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_DEL_SEGMENT: + vcl_session_app_del_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: clib_warning ("unhandled: %u", e->event_type); break; @@ -2216,7 +2428,7 @@ vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0; vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session = 0; - int rv, i; + int i; if (n_bits && read_map) { @@ -2250,13 +2462,12 @@ vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, clib_bitmap_foreach (sid, wrk->wr_bitmap, ({ if (!(session = vcl_session_get (wrk, sid))) { - if (except_map && sid < minbits) - clib_bitmap_set_no_check (except_map, sid, 1); - continue; + clib_bitmap_set_no_check ((uword*)write_map, sid, 1); + bits_set++; + continue; } - rv = svm_fifo_is_full_prod (session->tx_fifo); - if (!rv) + if (vcl_session_write_ready (session)) { clib_bitmap_set_no_check ((uword*)write_map, sid, 1); bits_set++; @@ -2272,13 +2483,12 @@ check_rd: clib_bitmap_foreach (sid, wrk->rd_bitmap, ({ if (!(session = vcl_session_get (wrk, sid))) { - if (except_map && sid < minbits) - clib_bitmap_set_no_check (except_map, sid, 1); - continue; + clib_bitmap_set_no_check ((uword*)read_map, sid, 1); + bits_set++; + continue; } - rv = vcl_session_read_ready (session); - if (rv) + if (vcl_session_read_ready (session)) { clib_bitmap_set_no_check ((uword*)read_map, sid, 1); bits_set++; @@ -2474,6 +2684,23 @@ vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle, svm_fifo_add_want_deq_ntf (session->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); + /* Generate EPOLLOUT if tx fifo not full */ + if ((event->events & EPOLLOUT) && + (vcl_session_write_ready (session) > 0)) + { + session_event_t e = { 0 }; + e.event_type = SESSION_IO_EVT_TX; + e.session_index = session->session_index; + vec_add1 (wrk->unhandled_evts_vector, e); + } + /* Generate EPOLLIN if rx fifo has data */ + if ((event->events & EPOLLIN) && (vcl_session_read_ready (session) > 0)) + { + session_event_t e = { 0 }; + e.event_type = SESSION_IO_EVT_RX; + e.session_index = session->session_index; + vec_add1 (wrk->unhandled_evts_vector, e); + } VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!", vep_handle, session_handle, event->events, event->data.u64); vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64); @@ -2499,6 +2726,17 @@ vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle, rv = VPPCOM_EINVAL; goto done; } + + /* Generate EPOLLOUT when tx_fifo/ct_tx_fifo not full */ + if ((event->events & EPOLLOUT) && + !(session->vep.ev.events & EPOLLOUT) && + (vcl_session_write_ready (session) > 0)) + { + session_event_t e = { 0 }; + e.event_type = SESSION_IO_EVT_TX; + e.session_index = session->session_index; + vec_add1 (wrk->unhandled_evts_vector, e); + } session->vep.et_mask = VEP_DEFAULT_ET_MASK; session->vep.ev = *event; VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!", @@ -2589,7 +2827,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, { case SESSION_IO_EVT_RX: sid = e->session_index; - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; vcl_fifo_rx_evt_valid_or_break (session); session_events = session->vep.ev.events; @@ -2602,7 +2841,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, break; case SESSION_IO_EVT_TX: sid = e->session_index; - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; if (!(EPOLLOUT & session_events)) @@ -2630,7 +2870,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, connected_msg = (session_connected_msg_t *) e->data; sid = vcl_session_connected_handler (wrk, connected_msg); /* Generate EPOLLOUT because there's no connected event */ - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; if (!(EPOLLOUT & session_events)) @@ -2638,28 +2879,25 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, add_event = 1; events[*num_ev].events |= EPOLLOUT; session_evt_data = session->vep.ev.data.u64; - if (session->session_state & STATE_FAILED) + if (session->session_state & STATE_DETACHED) events[*num_ev].events |= EPOLLHUP; break; case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; session = vcl_session_disconnected_handler (wrk, disconnected_msg); - if (!session) + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; - if (!((EPOLLHUP | EPOLLRDHUP) & session_events)) - break; add_event = 1; events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP; session_evt_data = session->vep.ev.data.u64; break; case SESSION_CTRL_EVT_RESET: sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; - if (!((EPOLLHUP | EPOLLRDHUP) & session_events)) - break; add_event = 1; events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP; session_evt_data = session->vep.ev.data.u64; @@ -2667,12 +2905,27 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_MIGRATED: + vcl_session_migrated_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_CLEANUP: + vcl_session_cleanup_handler (wrk, e->data); + break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_ADD_SEGMENT: + vcl_session_app_add_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_DEL_SEGMENT: + vcl_session_app_del_segment_handler (wrk, e->data); + break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: VDBG (0, "unhandled: %u", e->event_type); break; @@ -2724,7 +2977,7 @@ vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, } } ASSERT (maxevents > *num_ev); - vcl_mq_dequeue_batch (wrk, mq, maxevents - *num_ev); + vcl_mq_dequeue_batch (wrk, mq, ~0); svm_msg_q_unlock (mq); handle_dequeued: @@ -2732,7 +2985,10 @@ handle_dequeued: { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); - vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); + if (*num_ev < maxevents) + vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); + else + vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (mq, msg); } vec_reset_length (wrk->mq_msg_vector); @@ -2762,7 +3018,7 @@ vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events, continue; now = clib_time_now (&wrk->clib_time); - wait -= now - start; + wait -= (now - start) * 1e3; start = now; } while (wait > 0); @@ -2876,8 +3132,10 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, 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)); + *flags = + O_RDWR | + (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK) ? + O_NONBLOCK : 0); *buflen = sizeof (*flags); VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, " "is_nonblocking = %u", session_handle, *flags, @@ -3032,7 +3290,8 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, /* VPP-TBD */ *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size : - session->tx_fifo ? session->tx_fifo->nitems : + session->tx_fifo ? + svm_fifo_size (session->tx_fifo) : vcm->cfg.tx_fifo_size); *buflen = sizeof (u32); @@ -3063,7 +3322,8 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, /* VPP-TBD */ *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size : - session->rx_fifo ? session->rx_fifo->nitems : + session->rx_fifo ? + svm_fifo_size (session->rx_fifo) : vcm->cfg.rx_fifo_size); *buflen = sizeof (u32); @@ -3392,6 +3652,11 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, *(int *) buffer = SHUT_RDWR; *buflen = sizeof (int); break; + + case VPPCOM_ATTR_SET_CONNECTED: + session->flags |= VCL_SESSION_F_CONNECTED; + break; + default: rv = VPPCOM_EINVAL; break; @@ -3405,20 +3670,8 @@ vppcom_session_recvfrom (uint32_t session_handle, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { vcl_worker_t *wrk = vcl_worker_get_current (); + vcl_session_t *session; int rv = VPPCOM_OK; - vcl_session_t *session = 0; - - if (ep) - { - session = vcl_session_get_w_handle (wrk, session_handle); - if (PREDICT_FALSE (!session)) - { - VDBG (0, "sh 0x%llx is closed!", session_handle); - return VPPCOM_EBADFD; - } - ep->is_ip4 = session->transport.is_ip4; - ep->port = session->transport.rmt_port; - } if (flags == 0) rv = vppcom_session_read (session_handle, buffer, buflen); @@ -3430,14 +3683,17 @@ vppcom_session_recvfrom (uint32_t session_handle, void *buffer, return VPPCOM_EAFNOSUPPORT; } - if (ep) + if (ep && rv > 0) { + session = vcl_session_get_w_handle (wrk, session_handle); if (session->transport.is_ip4) clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); + ep->is_ip4 = session->transport.is_ip4; + ep->port = session->transport.rmt_port; } return rv; @@ -3447,13 +3703,33 @@ int vppcom_session_sendto (uint32_t session_handle, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { + vcl_worker_t *wrk = vcl_worker_get_current (); + vcl_session_t *s; + + s = vcl_session_get_w_handle (wrk, session_handle); + if (!s) + return VPPCOM_EBADFD; + if (!buffer) return VPPCOM_EINVAL; if (ep) { - // TBD - return VPPCOM_EINVAL; + if (s->session_type != VPPCOM_PROTO_UDP + || (s->flags & VCL_SESSION_F_CONNECTED)) + return VPPCOM_EINVAL; + + /* Session not connected/bound in vpp. Create it by 'connecting' it */ + if (PREDICT_FALSE (s->session_state == STATE_CLOSED)) + { + vcl_send_session_connect (wrk, s); + } + else + { + s->transport.is_ip4 = ep->is_ip4; + s->transport.rmt_port = ep->port; + vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep); + } } if (flags) @@ -3462,7 +3738,8 @@ vppcom_session_sendto (uint32_t session_handle, void *buffer, VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags); } - return (vppcom_session_write_inline (session_handle, buffer, buflen, 1)); + return (vppcom_session_write_inline (wrk, s, buffer, buflen, 1, + s->is_dgram ? 1 : 0)); } int @@ -3618,6 +3895,12 @@ vppcom_worker_unregister (void) vcl_set_worker_index (~0); } +void +vppcom_worker_index_set (int index) +{ + vcl_set_worker_index (index); +} + int vppcom_worker_index (void) { @@ -3670,6 +3953,95 @@ vppcom_session_n_accepted (uint32_t session_handle) return session->n_accepted_sessions; } +const char * +vppcom_proto_str (vppcom_proto_t proto) +{ + char const *proto_str; + + switch (proto) + { + case VPPCOM_PROTO_TCP: + proto_str = "TCP"; + break; + case VPPCOM_PROTO_UDP: + proto_str = "UDP"; + break; + case VPPCOM_PROTO_TLS: + proto_str = "TLS"; + break; + case VPPCOM_PROTO_QUIC: + proto_str = "QUIC"; + break; + default: + proto_str = "UNKNOWN"; + break; + } + return proto_str; +} + +const char * +vppcom_retval_str (int retval) +{ + char const *st; + + switch (retval) + { + case VPPCOM_OK: + st = "VPPCOM_OK"; + break; + + case VPPCOM_EAGAIN: + st = "VPPCOM_EAGAIN"; + break; + + case VPPCOM_EFAULT: + st = "VPPCOM_EFAULT"; + break; + + case VPPCOM_ENOMEM: + st = "VPPCOM_ENOMEM"; + break; + + case VPPCOM_EINVAL: + st = "VPPCOM_EINVAL"; + break; + + case VPPCOM_EBADFD: + st = "VPPCOM_EBADFD"; + break; + + case VPPCOM_EAFNOSUPPORT: + st = "VPPCOM_EAFNOSUPPORT"; + break; + + case VPPCOM_ECONNABORTED: + st = "VPPCOM_ECONNABORTED"; + break; + + case VPPCOM_ECONNRESET: + st = "VPPCOM_ECONNRESET"; + break; + + case VPPCOM_ENOTCONN: + st = "VPPCOM_ENOTCONN"; + break; + + case VPPCOM_ECONNREFUSED: + st = "VPPCOM_ECONNREFUSED"; + break; + + case VPPCOM_ETIMEDOUT: + st = "VPPCOM_ETIMEDOUT"; + break; + + default: + st = "UNKNOWN_STATE"; + break; + } + + return st; +} + /* * fd.io coding-style-patch-verification: ON *