diff options
Diffstat (limited to 'src/plugins/http')
| -rw-r--r-- | src/plugins/http/CMakeLists.txt | 18 | ||||
| -rw-r--r-- | src/plugins/http/http.c | 1002 | ||||
| -rw-r--r-- | src/plugins/http/http.h | 194 | ||||
| -rw-r--r-- | src/plugins/http/http_timer.c | 91 | ||||
| -rw-r--r-- | src/plugins/http/http_timer.h | 91 |
5 files changed, 1396 insertions, 0 deletions
diff --git a/src/plugins/http/CMakeLists.txt b/src/plugins/http/CMakeLists.txt new file mode 100644 index 00000000000..9f5ce778739 --- /dev/null +++ b/src/plugins/http/CMakeLists.txt @@ -0,0 +1,18 @@ +# Copyright (c) 2022 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +add_vpp_plugin(http + SOURCES + http.c + http_timer.c +) diff --git a/src/plugins/http/http.c b/src/plugins/http/http.c new file mode 100644 index 00000000000..5cdbaa7df3e --- /dev/null +++ b/src/plugins/http/http.c @@ -0,0 +1,1002 @@ +/* + * Copyright (c) 2022 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <http/http.h> +#include <vnet/session/session.h> +#include <http/http_timer.h> + +static http_main_t http_main; + +const char *http_status_code_str[] = { +#define _(c, s, str) str, + foreach_http_status_code +#undef _ +}; + +const char *http_content_type_str[] = { +#define _(s, str) str, + foreach_http_content_type +#undef _ +}; + +static inline http_worker_t * +http_worker_get (u32 thread_index) +{ + return &http_main.wrk[thread_index]; +} + +static inline u32 +http_conn_alloc_w_thread (u32 thread_index) +{ + http_worker_t *wrk = http_worker_get (thread_index); + http_conn_t *hc; + + pool_get_zero (wrk->conn_pool, hc); + hc->c_thread_index = thread_index; + hc->h_hc_index = hc - wrk->conn_pool; + hc->h_pa_session_handle = SESSION_INVALID_HANDLE; + hc->h_tc_session_handle = SESSION_INVALID_HANDLE; + return hc->h_hc_index; +} + +static inline http_conn_t * +http_conn_get_w_thread (u32 hc_index, u32 thread_index) +{ + http_worker_t *wrk = http_worker_get (thread_index); + return pool_elt_at_index (wrk->conn_pool, hc_index); +} + +void +http_conn_free (http_conn_t *hc) +{ + http_worker_t *wrk = http_worker_get (hc->c_thread_index); + pool_put (wrk->conn_pool, hc); +} + +static u32 +http_listener_alloc (void) +{ + http_main_t *hm = &http_main; + http_conn_t *ctx; + + pool_get_zero (hm->listener_ctx_pool, ctx); + ctx->c_c_index = ctx - hm->listener_ctx_pool; + return ctx->c_c_index; +} + +http_conn_t * +http_listener_get (u32 ctx_index) +{ + return pool_elt_at_index (http_main.listener_ctx_pool, ctx_index); +} + +void +http_disconnect_transport (http_conn_t *hc) +{ + vnet_disconnect_args_t a = { + .handle = hc->h_tc_session_handle, + .app_index = http_main.app_index, + }; + + hc->state = HTTP_CONN_STATE_CLOSED; + + if (vnet_disconnect_session (&a)) + clib_warning ("disconnect returned"); +} + +static void +http_buffer_init (http_buffer_t *hb, svm_fifo_t *f, u32 data_len) +{ + hb->len = data_len; + hb->offset = 0; + hb->cur_seg = 0; + hb->src = f; + hb->segs = 0; +} + +static void +http_buffer_free (http_buffer_t *hb) +{ + hb->src = 0; + vec_free (hb->segs); +} + +svm_fifo_seg_t * +http_buffer_get_segs (http_buffer_t *hb, u32 max_len, u32 *n_segs) +{ + u32 _n_segs = 5; + int len; + + max_len = clib_max (hb->len - hb->offset, max_len); + + vec_validate (hb->segs, _n_segs); + + len = svm_fifo_segments (hb->src, 0, hb->segs, &_n_segs, max_len); + if (len < 0) + return 0; + + *n_segs = _n_segs; + + HTTP_DBG (1, "available to send %u n_segs %u", len, *n_segs); + + return hb->segs; +} + +void +http_buffer_drain (http_buffer_t *hb, u32 len) +{ + hb->offset += len; + svm_fifo_dequeue_drop (hb->src, len); + HTTP_DBG (1, "drained %u len %u offset %u", len, hb->len, hb->offset); +} + +static inline u8 +http_buffer_is_drained (http_buffer_t *hb) +{ + ASSERT (hb->offset <= hb->len); + return (hb->offset == hb->len); +} + +static void +http_conn_timeout_cb (void *hc_handlep) +{ + http_conn_t *hc; + uword hs_handle; + + hs_handle = pointer_to_uword (hc_handlep); + hc = http_conn_get_w_thread (hs_handle & 0x00FFFFFF, hs_handle >> 24); + + HTTP_DBG (1, "terminate thread %d index %d hs %llx", hs_handle >> 24, + hs_handle & 0x00FFFFFF, hc); + if (!hc) + return; + + hc->timer_handle = ~0; + session_transport_closing_notify (&hc->connection); + http_disconnect_transport (hc); +} + +int +http_ts_accept_callback (session_t *ts) +{ + session_t *ts_listener, *as, *asl; + app_worker_t *app_wrk; + http_conn_t *lhc, *hc; + u32 hc_index; + int rv; + + ts_listener = listen_session_get_from_handle (ts->listener_handle); + lhc = http_listener_get (ts_listener->opaque); + + hc_index = http_conn_alloc_w_thread (ts->thread_index); + hc = http_conn_get_w_thread (hc_index, ts->thread_index); + clib_memcpy_fast (hc, lhc, sizeof (*lhc)); + hc->c_thread_index = vlib_get_thread_index (); + hc->h_hc_index = hc_index; + + hc->h_tc_session_handle = session_handle (ts); + hc->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; + + hc->state = HTTP_CONN_STATE_ESTABLISHED; + hc->req_state = HTTP_REQ_STATE_WAIT_METHOD; + + ts->session_state = SESSION_STATE_READY; + ts->opaque = hc_index; + + /* + * Alloc session and initialize + */ + as = session_alloc (hc->c_thread_index); + as->session_state = SESSION_STATE_CREATED; + hc->c_s_index = as->session_index; + + as->app_wrk_index = hc->h_pa_wrk_index; + as->connection_index = hc->c_c_index; + as->session_state = SESSION_STATE_ACCEPTING; + + asl = listen_session_get_from_handle (lhc->h_pa_session_handle); + as->session_type = asl->session_type; + as->listener_handle = lhc->h_pa_session_handle; + + /* + * Init session fifos and notify app + */ + if ((rv = app_worker_init_accepted (as))) + { + HTTP_DBG (1, "failed to allocate fifos"); + session_free (as); + return rv; + } + + hc->h_pa_session_handle = session_handle (as); + hc->h_pa_wrk_index = as->app_wrk_index; + app_wrk = app_worker_get (as->app_wrk_index); + + HTTP_DBG (1, "Accepted on listener %u new connection [%u]%x", + ts_listener->opaque, vlib_get_thread_index (), hc_index); + + if ((rv = app_worker_accept_notify (app_wrk, as))) + { + HTTP_DBG (0, "app accept returned"); + session_free (as); + return rv; + } + + http_conn_timer_start (hc); + + return 0; +} + +static int +http_ts_connected_callback (u32 http_app_index, u32 hc_index, session_t *ts, + session_error_t err) +{ + clib_warning ("not supported"); + return 0; +} + +static void +http_ts_disconnect_callback (session_t *ts) +{ + http_conn_t *hc; + + hc = http_conn_get_w_thread (ts->opaque, ts->thread_index); + + if (hc->state < HTTP_CONN_STATE_TRANSPORT_CLOSED) + hc->state = HTTP_CONN_STATE_TRANSPORT_CLOSED; + + if (!svm_fifo_max_dequeue_cons (ts->rx_fifo)) + session_transport_closing_notify (&hc->connection); +} + +static void +http_ts_reset_callback (session_t *ts) +{ + http_conn_t *ctx; + + ctx = http_conn_get_w_thread (ts->opaque, ts->thread_index); + + if (ctx->state < HTTP_CONN_STATE_TRANSPORT_CLOSED) + ctx->state = HTTP_CONN_STATE_TRANSPORT_CLOSED; + + if (!svm_fifo_max_dequeue_cons (ts->rx_fifo)) + session_transport_reset_notify (&ctx->connection); +} + +/** + * http error boilerplate + */ +static const char *http_error_template = "HTTP/1.1 %s\r\n" + "Date: %U GMT\r\n" + "Content-Type: text/html\r\n" + "Connection: close\r\n" + "Pragma: no-cache\r\n" + "Content-Length: 0\r\n\r\n"; + +/** + * http response boilerplate + */ +static const char *http_response_template = "HTTP/1.1 200 OK\r\n" + "Date: %U GMT\r\n" + "Expires: %U GMT\r\n" + "Server: VPP Static\r\n" + "Content-Type: %s\r\n" + "Content-Length: %d\r\n\r\n"; + +static u32 +send_data (http_conn_t *hc, u8 *data, u32 length, u32 offset) +{ + const u32 max_burst = 64 << 10; + session_t *ts; + u32 to_send; + int sent; + + ts = session_get_from_handle (hc->h_tc_session_handle); + + to_send = clib_min (length - offset, max_burst); + sent = svm_fifo_enqueue (ts->tx_fifo, to_send, data + offset); + + if (sent <= 0) + return offset; + + if (svm_fifo_set_event (ts->tx_fifo)) + session_send_io_evt_to_thread (ts->tx_fifo, SESSION_IO_EVT_TX); + + return (offset + sent); +} + +static void +send_error (http_conn_t *hc, http_status_code_t ec) +{ + http_main_t *hm = &http_main; + u8 *data; + f64 now; + + if (ec >= HTTP_N_STATUS) + ec = HTTP_STATUS_INTERNAL_ERROR; + + now = clib_timebase_now (&hm->timebase); + data = format (0, http_error_template, http_status_code_str[ec], + format_clib_timebase_time, now); + send_data (hc, data, vec_len (data), 0); + vec_free (data); +} + +static int +read_request (http_conn_t *hc) +{ + u32 max_deq, cursize; + session_t *ts; + int n_read; + + ts = session_get_from_handle (hc->h_tc_session_handle); + + cursize = vec_len (hc->rx_buf); + max_deq = svm_fifo_max_dequeue (ts->rx_fifo); + if (PREDICT_FALSE (max_deq == 0)) + return -1; + + vec_validate (hc->rx_buf, cursize + max_deq - 1); + n_read = svm_fifo_dequeue (ts->rx_fifo, max_deq, hc->rx_buf + cursize); + ASSERT (n_read == max_deq); + + if (svm_fifo_is_empty (ts->rx_fifo)) + svm_fifo_unset_event (ts->rx_fifo); + + _vec_len (hc->rx_buf) = cursize + n_read; + return 0; +} + +static int +v_find_index (u8 *vec, char *str) +{ + int start_index; + u32 slen = (u32) strnlen_s_inline (str, 8); + u32 vlen = vec_len (vec); + + ASSERT (slen > 0); + + if (vlen <= slen) + return -1; + + for (start_index = 0; start_index < (vlen - slen); start_index++) + { + if (!memcmp (vec, str, slen)) + return start_index; + } + + return -1; +} + +/** + * waiting for request method from peer - parse request method and data + */ +static int +state_wait_method (http_conn_t *hc, transport_send_params_t *sp) +{ + http_main_t *hm = &http_main; + app_worker_t *app_wrk; + http_msg_t msg; + session_t *as; + int i, rv; + u32 len; + u8 *buf; + + rv = read_request (hc); + + /* Nothing yet, wait for data or timer expire */ + if (rv) + return 0; + + if (vec_len (hc->rx_buf) < 8) + { + send_error (hc, HTTP_STATUS_BAD_REQUEST); + http_disconnect_transport (hc); + return -1; + } + + if ((i = v_find_index (hc->rx_buf, "GET ")) >= 0) + { + hc->method = HTTP_REQ_GET; + hc->rx_buf_offset = i + 5; + } + else if ((i = v_find_index (hc->rx_buf, "POST ")) >= 0) + { + hc->method = HTTP_REQ_POST; + hc->rx_buf_offset = i + 6; + } + else + { + if (hm->debug_level > 1) + clib_warning ("Unknown http method"); + + send_error (hc, HTTP_STATUS_METHOD_NOT_ALLOWED); + http_disconnect_transport (hc); + return -1; + } + + buf = &hc->rx_buf[hc->rx_buf_offset]; + len = vec_len (hc->rx_buf) - hc->rx_buf_offset; + + msg.type = HTTP_MSG_REQUEST; + msg.data.content_type = HTTP_CONTENT_TEXT_HTML; + msg.data.len = len; + msg.data.offset = 0; + + svm_fifo_seg_t segs[2] = { { (u8 *) &msg, sizeof (msg) }, { buf, len } }; + + as = session_get_from_handle (hc->h_pa_session_handle); + rv = svm_fifo_enqueue_segments (as->rx_fifo, segs, 2, 0 /* allow partial */); + if (rv < 0 || rv != sizeof (msg) + len) + { + clib_warning ("failed app enqueue"); + /* This should not happen as we only handle 1 request per session, + * and fifo is allocated, but going forward we should consider + * rescheduling */ + return -1; + } + + vec_free (hc->rx_buf); + hc->req_state = HTTP_REQ_STATE_WAIT_APP; + + app_wrk = app_worker_get_if_valid (as->app_wrk_index); + app_worker_lock_and_send_event (app_wrk, as, SESSION_IO_EVT_RX); + + return 0; +} + +/** + * waiting for data from app + */ +static int +state_wait_app (http_conn_t *hc, transport_send_params_t *sp) +{ + http_main_t *hm = &http_main; + http_status_code_t ec; + http_msg_t msg; + session_t *as; + u8 *header; + u32 offset; + f64 now; + int rv; + + as = session_get_from_handle (hc->h_pa_session_handle); + + rv = svm_fifo_dequeue (as->tx_fifo, sizeof (msg), (u8 *) &msg); + ASSERT (rv == sizeof (msg)); + + if (msg.type != HTTP_MSG_REPLY) + { + clib_warning ("unexpected msg type from app %u", msg.type); + ec = HTTP_STATUS_INTERNAL_ERROR; + goto error; + } + + if (msg.code != HTTP_STATUS_OK) + { + ec = msg.code; + goto error; + } + + http_buffer_init (&hc->tx_buf, as->tx_fifo, msg.data.len); + + /* + * Add headers. For now: + * - current time + * - expiration time + * - content type + * - data length + */ + now = clib_timebase_now (&hm->timebase); + header = format (0, http_response_template, + /* Date */ + format_clib_timebase_time, now, + /* Expires */ + format_clib_timebase_time, now + 600.0, + /* Content type */ + http_content_type_str[msg.data.content_type], + /* Length */ + msg.data.len); + + offset = send_data (hc, header, vec_len (header), 0); + if (offset != vec_len (header)) + { + clib_warning ("couldn't send response header!"); + ec = HTTP_STATUS_INTERNAL_ERROR; + goto error; + } + vec_free (header); + + /* Start sending the actual data */ + hc->req_state = HTTP_REQ_STATE_SEND_MORE_DATA; + + return 1; + +error: + + send_error (hc, ec); + hc->req_state = HTTP_REQ_STATE_WAIT_METHOD; + http_disconnect_transport (hc); + + /* stop state machine processing */ + return 0; +} + +static int +state_send_more_data (http_conn_t *hc, transport_send_params_t *sp) +{ + u32 max_send = 64 << 10, n_segs; + http_buffer_t *hb = &hc->tx_buf; + svm_fifo_seg_t *seg; + session_t *ts; + int sent = 0; + + ts = session_get_from_handle (hc->h_tc_session_handle); + if ((seg = http_buffer_get_segs (hb, max_send, &n_segs))) + sent = svm_fifo_enqueue_segments (ts->tx_fifo, seg, n_segs, + 1 /* allow partial */); + + if (sent > 0) + { + http_buffer_drain (hb, sent); + + /* Ask scheduler to notify app of deq event if needed */ + sp->max_burst_size = sent; + } + else + { + sp->max_burst_size = 0; + } + + /* Not finished sending all data */ + if (!http_buffer_is_drained (hb)) + { + if (svm_fifo_set_event (ts->tx_fifo)) + session_send_io_evt_to_thread (ts->tx_fifo, SESSION_IO_EVT_TX); + + if (svm_fifo_max_enqueue (ts->tx_fifo) < 16 << 10) + { + /* Deschedule http session and wait for deq notification if + * underlying ts tx fifo almost full */ + svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); + transport_connection_deschedule (&hc->connection); + sp->flags |= TRANSPORT_SND_F_DESCHED; + } + } + else + { + if (svm_fifo_set_event (ts->tx_fifo)) + session_send_io_evt_to_thread (ts->tx_fifo, SESSION_IO_EVT_TX_FLUSH); + + /* Finished transaction, back to HTTP_REQ_STATE_WAIT_METHOD */ + hc->req_state = HTTP_REQ_STATE_WAIT_METHOD; + http_buffer_free (&hc->tx_buf); + } + + return 0; +} + +typedef int (*http_sm_handler) (http_conn_t *, transport_send_params_t *sp); + +static http_sm_handler req_state_funcs[HTTP_REQ_N_STATES] = { + /* Waiting for GET, POST, etc. */ + state_wait_method, + /* Wait for data from app */ + state_wait_app, + /* Send more data */ + state_send_more_data, +}; + +static void +http_req_run_state_machine (http_conn_t *hc, transport_send_params_t *sp) +{ + int rv; + + do + { + rv = req_state_funcs[hc->req_state](hc, sp); + if (rv < 0) + return; + } + while (rv); + + /* Reset the session expiration timer */ + http_conn_timer_update (hc); +} + +static int +http_ts_rx_callback (session_t *ts) +{ + http_conn_t *hc; + + hc = http_conn_get_w_thread (ts->opaque, ts->thread_index); + + if (hc->req_state != HTTP_REQ_STATE_WAIT_METHOD) + { + clib_warning ("tcp data in req state %u", hc->req_state); + return 0; + } + + http_req_run_state_machine (hc, 0); + + if (hc->state == HTTP_CONN_STATE_TRANSPORT_CLOSED) + { + if (!svm_fifo_max_dequeue_cons (ts->rx_fifo)) + session_transport_closing_notify (&hc->connection); + } + return 0; +} + +int +http_ts_builtin_tx_callback (session_t *ts) +{ + clib_warning ("called"); + return 0; +} + +static void +http_ts_cleanup_callback (session_t *ts, session_cleanup_ntf_t ntf) +{ + http_conn_t *hc; + + if (ntf == SESSION_CLEANUP_TRANSPORT) + return; + + hc = http_conn_get_w_thread (ts->opaque, ts->thread_index); + if (!hc) + { + clib_warning ("no http connection for %u", ts->session_index); + return; + } + + vec_free (hc->rx_buf); + + http_buffer_free (&hc->tx_buf); + http_conn_timer_stop (hc); + + session_transport_delete_notify (&hc->connection); + http_conn_free (hc); +} + +int +http_add_segment_callback (u32 client_index, u64 segment_handle) +{ + /* No-op for builtin */ + return 0; +} + +int +http_del_segment_callback (u32 client_index, u64 segment_handle) +{ + return 0; +} + +static session_cb_vft_t http_app_cb_vft = { + .session_accept_callback = http_ts_accept_callback, + .session_disconnect_callback = http_ts_disconnect_callback, + .session_connected_callback = http_ts_connected_callback, + .session_reset_callback = http_ts_reset_callback, + .session_cleanup_callback = http_ts_cleanup_callback, + .add_segment_callback = http_add_segment_callback, + .del_segment_callback = http_del_segment_callback, + .builtin_app_rx_callback = http_ts_rx_callback, + .builtin_app_tx_callback = http_ts_builtin_tx_callback, +}; + +static clib_error_t * +http_transport_enable (vlib_main_t *vm, u8 is_en) +{ + u32 add_segment_size = 256 << 20, first_seg_size = 32 << 20; + vnet_app_detach_args_t _da, *da = &_da; + vnet_app_attach_args_t _a, *a = &_a; + u64 options[APP_OPTIONS_N_OPTIONS]; + http_main_t *hm = &http_main; + u32 fifo_size = 128 << 12; + + if (!is_en) + { + da->app_index = hm->app_index; + da->api_client_index = APP_INVALID_INDEX; + vnet_application_detach (da); + return 0; + } + + vec_validate (hm->wrk, vlib_num_workers ()); + + first_seg_size = hm->first_seg_size ? hm->first_seg_size : first_seg_size; + fifo_size = hm->fifo_size ? hm->fifo_size : fifo_size; + + clib_memset (a, 0, sizeof (*a)); + clib_memset (options, 0, sizeof (options)); + + a->session_cb_vft = &http_app_cb_vft; + a->api_client_index = APP_INVALID_INDEX; + a->options = options; + a->name = format (0, "http"); + a->options[APP_OPTIONS_SEGMENT_SIZE] = first_seg_size; + a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = add_segment_size; + a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size; + a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size; + a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; + a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; + a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP; + + if (vnet_application_attach (a)) + return clib_error_return (0, "failed to attach http app"); + + hm->app_index = a->app_index; + vec_free (a->name); + + clib_timebase_init (&hm->timebase, 0 /* GMT */, CLIB_TIMEBASE_DAYLIGHT_NONE, + &vm->clib_time /* share the system clock */); + + http_timers_init (vm, http_conn_timeout_cb); + + return 0; +} + +static int +http_transport_connect (transport_endpoint_cfg_t *tep) +{ + return -1; +} + +static u32 +http_start_listen (u32 app_listener_index, transport_endpoint_t *tep) +{ + vnet_listen_args_t _args = {}, *args = &_args; + session_t *tc_listener, *app_listener; + http_main_t *hm = &http_main; + session_endpoint_cfg_t *sep; + app_worker_t *app_wrk; + transport_proto_t tp; + app_listener_t *al; + application_t *app; + http_conn_t *lhc; + u32 lhc_index; + + sep = (session_endpoint_cfg_t *) tep; + + app_wrk = app_worker_get (sep->app_wrk_index); + app = application_get (app_wrk->app_index); + + args->app_index = hm->app_index; + args->sep_ext = *sep; + args->sep_ext.ns_index = app->ns_index; + tp = sep->ext_cfg ? TRANSPORT_PROTO_TLS : TRANSPORT_PROTO_TCP; + args->sep_ext.transport_proto = tp; + + if (vnet_listen (args)) + return SESSION_INVALID_INDEX; + + lhc_index = http_listener_alloc (); + lhc = http_listener_get (lhc_index); + + /* Grab transport connection listener and link to http listener */ + lhc->h_tc_session_handle = args->handle; + al = app_listener_get_w_handle (lhc->h_tc_session_handle); + tc_listener = app_listener_get_session (al); + tc_listener->opaque = lhc_index; + + /* Grab application listener and link to http listener */ + app_listener = listen_session_get (app_listener_index); + lhc->h_pa_wrk_index = sep->app_wrk_index; + lhc->h_pa_session_handle = listen_session_get_handle (app_listener); + lhc->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; + + return lhc_index; +} + +static void +http_transport_close (u32 hc_index, u32 thread_index) +{ + session_t *as; + http_conn_t *hc; + + HTTP_DBG (1, "App disconnecting %x", hc_index); + + hc = http_conn_get_w_thread (hc_index, thread_index); + as = session_get_from_handle (hc->h_pa_session_handle); + + /* Nothing more to send, confirm close */ + if (!svm_fifo_max_dequeue_cons (as->tx_fifo)) + { + session_transport_closed_notify (&hc->connection); + http_disconnect_transport (hc); + } + else + { + /* Wait for all data to be written to ts */ + hc->state = HTTP_CONN_STATE_APP_CLOSED; + } +} + +static transport_connection_t * +http_transport_get_connection (u32 hc_index, u32 thread_index) +{ + http_conn_t *hc = http_conn_get_w_thread (hc_index, thread_index); + return &hc->connection; +} + +static transport_connection_t * +http_transport_get_listener (u32 listener_index) +{ + http_conn_t *lhc = http_listener_get (listener_index); + return &lhc->connection; +} + +static int +http_app_tx_callback (void *session, transport_send_params_t *sp) +{ + session_t *as = (session_t *) session; + http_conn_t *hc; + + hc = http_conn_get_w_thread (as->connection_index, as->thread_index); + if (hc->req_state < HTTP_REQ_STATE_WAIT_APP) + { + clib_warning ("app data in req state %u", hc->req_state); + return 0; + } + + http_req_run_state_machine (hc, sp); + + if (hc->state == HTTP_CONN_STATE_CLOSED) + { + if (!svm_fifo_max_dequeue_cons (as->rx_fifo)) + http_disconnect_transport (hc); + } + return 0; +} + +static u8 * +format_http_connection (u8 *s, va_list *args) +{ + http_conn_t *hc = va_arg (*args, http_conn_t *); + session_t *ts; + + ts = session_get_from_handle (hc->h_tc_session_handle); + s = format (s, "[%d:%d][H] app_wrk %u ts %d:%d", hc->c_thread_index, + hc->c_s_index, hc->h_pa_wrk_index, ts->thread_index, + ts->session_index); + + return s; +} + +static u8 * +format_http_listener (u8 *s, va_list *args) +{ + http_conn_t *lhc = va_arg (*args, http_conn_t *); + app_listener_t *al; + session_t *lts; + + al = app_listener_get_w_handle (lhc->h_tc_session_handle); + lts = app_listener_get_session (al); + s = format (s, "[%d:%d][H] app_wrk %u ts %d:%d", lhc->c_thread_index, + lhc->c_s_index, lhc->h_pa_wrk_index, lts->thread_index, + lts->session_index); + + return s; +} + +static u8 * +format_http_conn_state (u8 *s, va_list *args) +{ + http_conn_t *hc = va_arg (*args, http_conn_t *); + + switch (hc->state) + { + case HTTP_CONN_STATE_LISTEN: + s = format (s, "LISTEN"); + break; + case HTTP_CONN_STATE_CONNECTING: + s = format (s, "CONNECTING"); + break; + case HTTP_CONN_STATE_ESTABLISHED: + s = format (s, "ESTABLISHED"); + break; + case HTTP_CONN_STATE_TRANSPORT_CLOSED: + s = format (s, "TRANSPORT_CLOSED"); + break; + case HTTP_CONN_STATE_APP_CLOSED: + s = format (s, "APP_CLOSED"); + break; + case HTTP_CONN_STATE_CLOSED: + s = format (s, "CLOSED"); + break; + } + + return s; +} + +static u8 * +format_http_transport_connection (u8 *s, va_list *args) +{ + u32 tc_index = va_arg (*args, u32); + u32 thread_index = va_arg (*args, u32); + u32 verbose = va_arg (*args, u32); + http_conn_t *hc; + + hc = http_conn_get_w_thread (tc_index, thread_index); + + s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_http_connection, hc); + if (verbose) + { + s = + format (s, "%-" SESSION_CLI_STATE_LEN "U", format_http_conn_state, hc); + if (verbose > 1) + s = format (s, "\n"); + } + + return s; +} + +static u8 * +format_http_transport_listener (u8 *s, va_list *args) +{ + u32 tc_index = va_arg (*args, u32); + u32 __clib_unused thread_index = va_arg (*args, u32); + u32 __clib_unused verbose = va_arg (*args, u32); + http_conn_t *lhc = http_listener_get (tc_index); + + s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_http_listener, lhc); + if (verbose) + s = + format (s, "%-" SESSION_CLI_STATE_LEN "U", format_http_conn_state, lhc); + return s; +} + +static const transport_proto_vft_t http_proto = { + .enable = http_transport_enable, + .connect = http_transport_connect, + .start_listen = http_start_listen, + .close = http_transport_close, + .custom_tx = http_app_tx_callback, + .get_connection = http_transport_get_connection, + .get_listener = http_transport_get_listener, + .format_connection = format_http_transport_connection, + .format_listener = format_http_transport_listener, + .transport_options = { + .name = "http", + .short_name = "H", + .tx_type = TRANSPORT_TX_INTERNAL, + .service_type = TRANSPORT_SERVICE_APP, + }, +}; + +static clib_error_t * +http_transport_init (vlib_main_t *vm) +{ + transport_register_protocol (TRANSPORT_PROTO_HTTP, &http_proto, + FIB_PROTOCOL_IP4, ~0); + transport_register_protocol (TRANSPORT_PROTO_HTTP, &http_proto, + FIB_PROTOCOL_IP6, ~0); + return 0; +} + +VLIB_INIT_FUNCTION (http_transport_init); + +VLIB_PLUGIN_REGISTER () = { + .version = VPP_BUILD_VER, + .description = "Hypertext Transfer Protocol (HTTP)", + .default_disabled = 0, +}; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/http/http.h b/src/plugins/http/http.h new file mode 100644 index 00000000000..209fc3236df --- /dev/null +++ b/src/plugins/http/http.h @@ -0,0 +1,194 @@ +/* + * Copyright (c) 2022 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SRC_PLUGINS_HTTP_HTTP_H_ +#define SRC_PLUGINS_HTTP_HTTP_H_ + +#include <vnet/plugin/plugin.h> +#include <vpp/app/version.h> + +#include <vppinfra/time_range.h> + +#include <vnet/session/application_interface.h> +#include <vnet/session/application.h> + +#define HTTP_DEBUG 0 + +#if HTTP_DEBUG +#define HTTP_DBG(_lvl, _fmt, _args...) \ + if (_lvl <= HTTP_DEBUG) \ + clib_warning (_fmt, ##_args) +#else +#define HTTP_DBG(_lvl, _fmt, _args...) +#endif + +typedef struct http_conn_id_ +{ + union + { + session_handle_t app_session_handle; + u32 parent_app_api_ctx; + }; + session_handle_t tc_session_handle; + u32 parent_app_wrk_index; +} http_conn_id_t; + +STATIC_ASSERT (sizeof (http_conn_id_t) <= TRANSPORT_CONN_ID_LEN, + "ctx id must be less than TRANSPORT_CONN_ID_LEN"); + +typedef enum http_state_ +{ + HTTP_CONN_STATE_LISTEN, + HTTP_CONN_STATE_CONNECTING, + HTTP_CONN_STATE_ESTABLISHED, + HTTP_CONN_STATE_TRANSPORT_CLOSED, + HTTP_CONN_STATE_APP_CLOSED, + HTTP_CONN_STATE_CLOSED +} http_conn_state_t; + +typedef enum http_req_state_ +{ + HTTP_REQ_STATE_WAIT_METHOD, + HTTP_REQ_STATE_WAIT_APP, + HTTP_REQ_STATE_SEND_MORE_DATA, + HTTP_REQ_N_STATES, +} http_req_state_t; + +typedef enum http_req_method_ +{ + HTTP_REQ_GET = 0, + HTTP_REQ_POST, +} http_req_method_t; + +typedef enum http_msg_type_ +{ + HTTP_MSG_REQUEST, + HTTP_MSG_REPLY +} http_msg_type_t; + +#define foreach_http_content_type \ + _ (TEXT_HTML, "text/html") \ + _ (TEXT_CSS, "text/css") \ + _ (TEXT_JS, "text/javascript") \ + _ (TEXT_JSON, "application/json") + +typedef enum http_content_type_ +{ +#define _(s, str) HTTP_CONTENT_##s, + foreach_http_content_type +#undef _ +} http_content_type_t; + +#define foreach_http_status_code \ + _ (200, OK, "200 OK") \ + _ (400, BAD_REQUEST, "400 Bad Request") \ + _ (405, METHOD_NOT_ALLOWED, "405 Method Not Allowed") \ + _ (500, INTERNAL_ERROR, "500 Internal Server Error") + +typedef enum http_status_code_ +{ +#define _(c, s, str) HTTP_STATUS_##s, + foreach_http_status_code +#undef _ + HTTP_N_STATUS +} http_status_code_t; + +typedef struct http_msg_data_ +{ + http_content_type_t content_type; + u32 len; + u32 offset; + u8 data[0]; +} http_msg_data_t; + +typedef struct http_msg_ +{ + http_msg_type_t type; + union + { + http_req_method_t method_type; + http_status_code_t code; + }; + http_msg_data_t data; +} http_msg_t; + +typedef struct http_buffer_ +{ + svm_fifo_t *src; + svm_fifo_seg_t *segs; + u32 len; + u32 cur_seg; + u32 offset; +} http_buffer_t; + +typedef struct http_tc_ +{ + union + { + transport_connection_t connection; + http_conn_id_t c_http_conn_id; + }; +#define h_tc_session_handle c_http_conn_id.tc_session_handle +#define h_pa_wrk_index c_http_conn_id.parent_app_wrk_index +#define h_pa_session_handle c_http_conn_id.app_session_handle +#define h_hc_index connection.c_index + + http_conn_state_t state; + u32 timer_handle; + + /* + * Current request + */ + http_req_state_t req_state; + http_req_method_t method; + u8 *rx_buf; + u32 rx_buf_offset; + http_buffer_t tx_buf; +} http_conn_t; + +typedef struct http_worker_ +{ + http_conn_t *conn_pool; +} http_worker_t; + +typedef struct http_main_ +{ + http_worker_t *wrk; + http_conn_t *listener_ctx_pool; + u32 app_index; + + clib_timebase_t timebase; + + /* + * Runtime config + */ + u8 debug_level; + + /* + * Config + */ + u64 first_seg_size; + u32 fifo_size; +} http_main_t; + +#endif /* SRC_PLUGINS_HTTP_HTTP_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/http/http_timer.c b/src/plugins/http/http_timer.c new file mode 100644 index 00000000000..42fe69076fe --- /dev/null +++ b/src/plugins/http/http_timer.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2022 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <http/http_timer.h> +#include <vnet/session/session.h> + +http_tw_ctx_t http_tw_ctx; + +static void +http_timer_process_expired_cb (u32 *expired_timers) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + u32 hs_handle; + int i; + + for (i = 0; i < vec_len (expired_timers); i++) + { + /* Get session handle. The first bit is the timer id */ + hs_handle = expired_timers[i] & 0x7FFFFFFF; + session_send_rpc_evt_to_thread (hs_handle >> 24, twc->cb_fn, + uword_to_pointer (hs_handle, void *)); + } +} + +static uword +http_timer_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + f64 now, timeout = 1.0; + uword *event_data = 0; + uword __clib_unused event_type; + + while (1) + { + vlib_process_wait_for_event_or_clock (vm, timeout); + now = vlib_time_now (vm); + event_type = vlib_process_get_events (vm, (uword **) &event_data); + + /* expire timers */ + clib_spinlock_lock (&twc->tw_lock); + tw_timer_expire_timers_2t_1w_2048sl (&twc->tw, now); + clib_spinlock_unlock (&twc->tw_lock); + + vec_reset_length (event_data); + } + return 0; +} + +VLIB_REGISTER_NODE (http_timer_process_node) = { + .function = http_timer_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "http-timer-process", + .state = VLIB_NODE_STATE_DISABLED, +}; + +void +http_timers_init (vlib_main_t *vm, http_conn_timeout_fn *cb_fn) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + vlib_node_t *n; + + tw_timer_wheel_init_2t_1w_2048sl (&twc->tw, http_timer_process_expired_cb, + 1.0 /* timer interval */, ~0); + clib_spinlock_init (&twc->tw_lock); + twc->cb_fn = cb_fn; + + vlib_node_set_state (vm, http_timer_process_node.index, + VLIB_NODE_STATE_POLLING); + n = vlib_get_node (vm, http_timer_process_node.index); + vlib_start_process (vm, n->runtime_index); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/http/http_timer.h b/src/plugins/http/http_timer.h new file mode 100644 index 00000000000..eec5a4595fe --- /dev/null +++ b/src/plugins/http/http_timer.h @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2022 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SRC_PLUGINS_HTTP_HTTP_TIMER_H_ +#define SRC_PLUGINS_HTTP_HTTP_TIMER_H_ + +#include <http/http.h> +#include <vppinfra/tw_timer_2t_1w_2048sl.h> + +#define HTTP_CONN_TIMEOUT 60 + +typedef void (http_conn_timeout_fn) (void *); + +typedef struct http_tw_ctx_ +{ + tw_timer_wheel_2t_1w_2048sl_t tw; + clib_spinlock_t tw_lock; + http_conn_timeout_fn *cb_fn; +} http_tw_ctx_t; + +extern http_tw_ctx_t http_tw_ctx; + +void http_timers_init (vlib_main_t *vm, http_conn_timeout_fn *cb_fn); + +static inline void +http_conn_timer_start (http_conn_t *hc) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + u32 hs_handle; + u64 timeout; + + timeout = HTTP_CONN_TIMEOUT; + hs_handle = hc->c_thread_index << 24 | hc->c_c_index; + + clib_spinlock_lock (&twc->tw_lock); + hc->timer_handle = + tw_timer_start_2t_1w_2048sl (&twc->tw, hs_handle, 0, timeout); + clib_spinlock_unlock (&twc->tw_lock); +} + +static inline void +http_conn_timer_stop (http_conn_t *hc) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + + if (hc->timer_handle == ~0) + return; + + clib_spinlock_lock (&twc->tw_lock); + tw_timer_stop_2t_1w_2048sl (&twc->tw, hc->timer_handle); + hc->timer_handle = ~0; + clib_spinlock_unlock (&twc->tw_lock); +} + +static inline void +http_conn_timer_update (http_conn_t *hc) +{ + http_tw_ctx_t *twc = &http_tw_ctx; + u64 timeout; + + if (hc->timer_handle == ~0) + return; + + timeout = HTTP_CONN_TIMEOUT; + + clib_spinlock_lock (&twc->tw_lock); + tw_timer_update_2t_1w_2048sl (&twc->tw, hc->timer_handle, timeout); + clib_spinlock_unlock (&twc->tw_lock); +} + +#endif /* SRC_PLUGINS_HTTP_HTTP_TIMER_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |