VPP-598: tcp stack initial commit - vpp - Vector Packet Processing

diff options

author	Dave Barach <dave@barachs.net>	2017-02-28 15:15:56 -0500
committer	Damjan Marion <dmarion.lists@gmail.com>	2017-03-01 20:25:48 +0000
commit	68b0fb0c620c7451ef1a6380c43c39de6614db51 (patch)
tree	f4188fa09723152f3ebfcebbbe4cacad903e0cf1 /src/vnet/flow/flow_report.h
parent	f869028740aaebeb0375077d4d84fa07a17fff1a (diff)

VPP-598: tcp stack initial commit

Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>

Diffstat (limited to 'src/vnet/flow/flow_report.h')

-rw-r--r--

src/vnet/flow/flow_report.h

1 files changed, 1 insertions, 1 deletions

/* * Copyright (c) 2017-2022 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_static/http_static.h> #include <vppinfra/bihash_template.c> #include <vppinfra/unix.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> /** @file static_server.c * Static http server, sufficient to serve .html / .css / .js content. */ /*? %%clicmd:group_label Static HTTP Server %% ?*/ #define HSS_FIFO_THRESH (16 << 10) hss_main_t hss_main; static void hss_cache_lock (void) { clib_spinlock_lock (&hss_main.cache_lock); } static void hss_cache_unlock (void) { clib_spinlock_unlock (&hss_main.cache_lock); } static hss_session_t * hss_session_alloc (u32 thread_index) { hss_main_t *hsm = &hss_main; hss_session_t *hs; pool_get_zero (hsm->sessions[thread_index], hs); hs->session_index = hs - hsm->sessions[thread_index]; hs->thread_index = thread_index; hs->cache_pool_index = ~0; return hs; } static hss_session_t * hss_session_get (u32 thread_index, u32 hs_index) { hss_main_t *hsm = &hss_main; if (pool_is_free_index (hsm->sessions[thread_index], hs_index)) return 0; return pool_elt_at_index (hsm->sessions[thread_index], hs_index); } static void hss_session_free (hss_session_t *hs) { hss_main_t *hsm = &hss_main; pool_put (hsm->sessions[hs->thread_index], hs); if (CLIB_DEBUG) { u32 save_thread_index; save_thread_index = hs->thread_index; /* Poison the entry, preserve timer state and thread index */ memset (hs, 0xfa, sizeof (*hs)); hs->thread_index = save_thread_index; } } /** \brief Detach cache entry from session */ static void hss_detach_cache_entry (hss_session_t *hs) { hss_main_t *hsm = &hss_main; hss_cache_entry_t *ep; /* * Decrement cache pool entry reference count * Note that if e.g. a file lookup fails, the cache pool index * won't be set */ if (hs->cache_pool_index != ~0) { ep = pool_elt_at_index (hsm->cache_pool, hs->cache_pool_index); ep->inuse--; if (hsm->debug_level > 1) clib_warning ("index %d refcnt now %d", hs->cache_pool_index, ep->inuse); } hs->cache_pool_index = ~0; if (hs->free_data) vec_free (hs->data); hs->data = 0; hs->data_offset = 0; hs->free_data = 0; vec_free (hs->path); } /** \brief Disconnect a session */ static void hss_session_disconnect_transport (hss_session_t *hs) { vnet_disconnect_args_t _a = { 0 }, *a = &_a; a->handle = hs->vpp_session_handle; a->app_index = hss_main.app_index; vnet_disconnect_session (a); } /** \brief Sanity-check the forward and reverse LRU lists */ static inline void lru_validate (hss_main_t *hsm) { #if CLIB_DEBUG > 0 f64 last_timestamp; u32 index; int i; hss_cache_entry_t *ep; last_timestamp = 1e70; for (i = 1, index = hsm->first_index; index != ~0;) { ep = pool_elt_at_index (hsm->cache_pool, index); index = ep->next_index; /* Timestamps should be smaller (older) as we walk the fwd list */ if (ep->last_used > last_timestamp) { clib_warning ("%d[%d]: last used %.6f, last_timestamp %.6f", ep - hsm->cache_pool, i, ep->last_used, last_timestamp); } last_timestamp = ep->last_used; i++; } last_timestamp = 0.0; for (i = 1, index = hsm->last_index; index != ~0;) { ep = pool_elt_at_index (hsm->cache_pool, index); index = ep->prev_index; /* Timestamps should be larger (newer) as we walk the rev list */ if (ep->last_used < last_timestamp) { clib_warning ("%d[%d]: last used %.6f, last_timestamp %.6f", ep - hsm->cache_pool, i, ep->last_used, last_timestamp); } last_timestamp = ep->last_used; i++; } #endif } /** \brief Remove a data cache entry from the LRU lists */ static inline void lru_remove (hss_main_t *hsm, hss_cache_entry_t *ep) { hss_cache_entry_t *next_ep, *prev_ep; u32 ep_index; lru_validate (hsm); ep_index = ep - hsm->cache_pool; /* Deal with list heads */ if (ep_index == hsm->first_index) hsm->first_index = ep->next_index; if (ep_index == hsm->last_index) hsm->last_index = ep->prev_index; /* Fix next->prev */ if (ep->next_index != ~0) { next_ep = pool_elt_at_index (hsm->cache_pool, ep->next_index); next_ep->prev_index = ep->prev_index; } /* Fix prev->next */ if (ep->prev_index != ~0) { prev_ep = pool_elt_at_index (hsm->cache_pool, ep->prev_index); prev_ep->next_index = ep->next_index; } lru_validate (hsm); } /** \brief Add an entry to the LRU lists, tag w/ supplied timestamp */ static inline void lru_add (hss_main_t *hsm, hss_cache_entry_t *ep, f64 now) { hss_cache_entry_t *next_ep; u32 ep_index; lru_validate (hsm); ep_index = ep - hsm->cache_pool; /* * Re-add at the head of the forward LRU list, * tail of the reverse LRU list */ if (hsm->first_index != ~0) { next_ep = pool_elt_at_index (hsm->cache_pool, hsm->first_index); next_ep->prev_index = ep_index; } ep->prev_index = ~0; /* ep now the new head of the LRU forward list */ ep->next_index = hsm->first_index; hsm->first_index = ep_index; /* single session case: also the tail of the reverse LRU list */ if (hsm->last_index == ~0) hsm->last_index = ep_index; ep->last_used = now; lru_validate (hsm); } /** \brief Remove and re-add a cache entry from/to the LRU lists */ static inline void lru_update (hss_main_t *hsm, hss_cache_entry_t *ep, f64 now) { lru_remove (hsm, ep); lru_add (hsm, ep, now); } static void start_send_data (hss_session_t *hs, http_status_code_t status) { http_msg_t msg; session_t *ts; int rv; ts = session_get (hs->vpp_session_index, hs->thread_index); msg.type = HTTP_MSG_REPLY; msg.code = status; msg.content_type = HTTP_CONTENT_TEXT_HTML; msg.data.len = vec_len (hs->data); if (vec_len (hs->data) > hss_main.use_ptr_thresh) { msg.data.type = HTTP_MSG_DATA_PTR; rv = svm_fifo_enqueue (ts->tx_fifo, sizeof (msg), (u8 *) &msg); ASSERT (rv == sizeof (msg)); uword data = pointer_to_uword (hs->data); rv = svm_fifo_enqueue (ts->tx_fifo, sizeof (data), (u8 *) &data); ASSERT (rv == sizeof (sizeof (data))); goto done; } msg.data.type = HTTP_MSG_DATA_INLINE; rv = svm_fifo_enqueue (ts->tx_fifo, sizeof (msg), (u8 *) &msg); ASSERT (rv == sizeof (msg)); if (!msg.data.len) goto done; rv = svm_fifo_enqueue (ts->tx_fifo, vec_len (hs->data), hs->data); if (rv != vec_len (hs->data)) { hs->data_offset = rv; svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); } done: if (svm_fifo_set_event (ts->tx_fifo)) session_send_io_evt_to_thread (ts->tx_fifo, SESSION_IO_EVT_TX); } static int try_url_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt, u8 *request, http_status_code_t *sc) { uword *p, *url_table; hss_url_handler_t fp; int rv; if (!hsm->enable_url_handlers) return -1; /* Look for built-in GET / POST handlers */ url_table = (rt == HTTP_REQ_GET) ? hsm->get_url_handlers : hsm->post_url_handlers; p = hash_get_mem (url_table, request); if (!p) return -1; if (hsm->debug_level > 0) clib_warning ("%s '%s'", (rt == HTTP_REQ_GET) ? "GET" : "POST", request); fp = (hss_url_handler_t) p[0]; hs->path = 0; rv = fp (rt, request, hs); if (rv) { clib_warning ("builtin handler %llx hit on %s '%s' but failed!", p[0], (rt == HTTP_REQ_GET) ? "GET" : "POST", request); *sc = HTTP_STATUS_NOT_FOUND; } return 0; } static int find_data (hss_session_t *hs, http_req_method_t rt, u8 *request) { http_status_code_t sc = HTTP_STATUS_OK; hss_main_t *hsm = &hss_main; struct stat _sb, *sb = &_sb; clib_error_t *error; u8 *path; if (!try_url_handler (hsm, hs, rt, request, &sc)) goto done; /* * Construct the file to open * Browsers are capable of sporadically including a leading '/' */ if (request[0] == '/') path = format (0, "%s%s%c", hsm->www_root, request, 0); else path = format (0, "%s/%s%c", hsm->www_root, request, 0); if (hsm->debug_level > 0) clib_warning ("%s '%s'", (rt == HTTP_REQ_GET) ? "GET" : "POST", path); /* Try to find the file. 2x special cases to find index.html */ if (stat ((char *) path, sb) < 0 /* cant even stat the file */ || sb->st_size < 20 /* file too small */ || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) { u32 save_length = vec_len (path) - 1; /* Try appending "index.html"... */ _vec_len (path) -= 1; path = format (path, "index.html%c", 0); if (stat ((char *) path, sb) < 0 /* cant even stat the file */ || sb->st_size < 20 /* file too small */ || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) { _vec_len (path) = save_length; path = format (path, "/index.html%c", 0); /* Send a redirect, otherwise the browser will confuse itself */ if (stat ((char *) path, sb) < 0 /* cant even stat the file */ || sb->st_size < 20 /* file too small */ || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) { sc = HTTP_STATUS_NOT_FOUND; goto done; } else { transport_endpoint_t endpoint; transport_proto_t proto; u16 local_port; int print_port = 0; u8 *port_str = 0; session_t *ts; /* * To make this bit work correctly, we need to know our local * IP address, etc. and send it in the redirect... */ u8 *redirect; vec_delete (path, vec_len (hsm->www_root) - 1, 0); ts = session_get (hs->vpp_session_index, hs->thread_index); session_get_endpoint (ts, &endpoint, 1 /* is_local */); local_port = clib_net_to_host_u16 (endpoint.port); proto = session_type_transport_proto (ts->session_type); if ((proto == TRANSPORT_PROTO_TCP && local_port != 80) || (proto == TRANSPORT_PROTO_TLS && local_port != 443)) { print_port = 1; port_str = format (0, ":%u", (u32) local_port); } redirect = format (0, "HTTP/1.1 301 Moved Permanently\r\n" "Location: http%s://%U%s%s\r\n\r\n", proto == TRANSPORT_PROTO_TLS ? "s" : "", format_ip46_address, &endpoint.ip, endpoint.is_ip4, print_port ? port_str : (u8 *) "", path); if (hsm->debug_level > 0) clib_warning ("redirect: %s", redirect); vec_free (port_str); hs->data = redirect; goto done; } } } /* find or read the file if we haven't done so yet. */ if (hs->data == 0) { BVT (clib_bihash_kv) kv; hss_cache_entry_t *ce; hs->path = path; /* First, try the cache */ kv.key = (u64) hs->path; if (BV (clib_bihash_search) (&hsm->name_to_data, &kv, &kv) == 0) { if (hsm->debug_level > 1) clib_warning ("lookup '%s' returned %lld", kv.key, kv.value); hss_cache_lock (); /* found the data.. */ ce = pool_elt_at_index (hsm->cache_pool, kv.value); hs->data = ce->data; /* Update the cache entry, mark it in-use */ lru_update (hsm, ce, vlib_time_now (vlib_get_main ())); hs->cache_pool_index = ce - hsm->cache_pool; ce->inuse++; if (hsm->debug_level > 1) clib_warning ("index %d refcnt now %d", hs->cache_pool_index, ce->inuse); hss_cache_unlock (); } else { hss_cache_lock (); if (hsm->debug_level > 1) clib_warning ("lookup '%s' failed", kv.key, kv.value); /* Need to recycle one (or more cache) entries? */ if (hsm->cache_size > hsm->cache_limit) { int free_index = hsm->last_index; while (free_index != ~0) { /* pick the LRU */ ce = pool_elt_at_index (hsm->cache_pool, free_index); free_index = ce->prev_index; /* Which could be in use... */ if (ce->inuse) { if (hsm->debug_level > 1) clib_warning ("index %d in use refcnt %d", ce - hsm->cache_pool, ce->inuse); } kv.key = (u64) (ce->filename); kv.value = ~0ULL; if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, 0 /* is_add */ ) < 0) { clib_warning ("LRU delete '%s' FAILED!", ce->filename); } else if (hsm->debug_level > 1) clib_warning ("LRU delete '%s' ok", ce->filename); lru_remove (hsm, ce); hsm->cache_size -= vec_len (ce->data); hsm->cache_evictions++; vec_free (ce->filename); vec_free (ce->data); if (hsm->debug_level > 1) clib_warning ("pool put index %d", ce - hsm->cache_pool); pool_put (hsm->cache_pool, ce); if (hsm->cache_size < hsm->cache_limit) break; } } /* Read the file */ error = clib_file_contents ((char *) (hs->path), &hs->data); if (error) { clib_warning ("Error reading '%s'", hs->path); clib_error_report (error); sc = HTTP_STATUS_INTERNAL_ERROR; hss_cache_unlock (); goto done; } /* Create a cache entry for it */ pool_get_zero (hsm->cache_pool, ce); ce->filename = vec_dup (hs->path); ce->data = hs->data; hs->cache_pool_index = ce - hsm->cache_pool; ce->inuse++; if (hsm->debug_level > 1) clib_warning ("index %d refcnt now %d", hs->cache_pool_index, ce->inuse); lru_add (hsm, ce, vlib_time_now (vlib_get_main ())); kv.key = (u64) vec_dup (hs->path); kv.value = ce - hsm->cache_pool; /* Add to the lookup table */ if (hsm->debug_level > 1) clib_warning ("add '%s' value %lld", kv.key, kv.value); if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, 1 /* is_add */ ) < 0) { clib_warning ("BUG: add failed!"); } hsm->cache_size += vec_len (ce->data); hss_cache_unlock (); } hs->data_offset = 0; } done: return sc; } static int hss_ts_rx_callback (session_t *ts) { hss_session_t *hs; u8 *request = 0; http_msg_t msg; int rv; http_status_code_t sc; hs = hss_session_get (ts->thread_index, ts->opaque); /* Read the http message header */ rv = svm_fifo_dequeue (ts->rx_fifo, sizeof (msg), (u8 *) &msg); ASSERT (rv == sizeof (msg)); if (msg.type != HTTP_MSG_REQUEST || (msg.method_type != HTTP_REQ_GET && msg.method_type != HTTP_REQ_POST)) { hs->data = 0; start_send_data (hs, HTTP_STATUS_METHOD_NOT_ALLOWED); return 0; } /* Read request */ vec_validate (request, msg.data.len - 1); rv = svm_fifo_dequeue (ts->rx_fifo, msg.data.len, request); ASSERT (rv == msg.data.len); /* Find and send data */ sc = find_data (hs, msg.method_type, request); start_send_data (hs, sc); vec_free (request); if (!hs->data) hss_session_disconnect_transport (hs); return 0; } static int hss_ts_tx_callback (session_t *ts) { hss_session_t *hs; u32 to_send; int rv; hs = hss_session_get (ts->thread_index, ts->opaque); if (!hs || !hs->data) return 0; to_send = vec_len (hs->data) - hs->data_offset; rv = svm_fifo_enqueue (ts->tx_fifo, to_send, hs->data + hs->data_offset); if (rv <= 0) { svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); return 0; } if (rv < to_send) { hs->data_offset += rv; svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); } if (svm_fifo_set_event (ts->tx_fifo)) session_send_io_evt_to_thread (ts->tx_fifo, SESSION_IO_EVT_TX); return 0; } /** \brief Session accept callback */ static int hss_ts_accept_callback (session_t *ts) { hss_session_t *hs; u32 thresh; hs = hss_session_alloc (ts->thread_index); hs->vpp_session_index = ts->session_index; hs->vpp_session_handle = session_handle (ts); /* The application sets a threshold for it's fifo to get notified when * additional data can be enqueued. We want to keep the TX fifo reasonably * full, however avoid entering a state where the * fifo is full all the time and small chunks of data are being enqueued * each time. If the fifo is small (under 16K) we set * the threshold to it's size, meaning a notification will be given when the * fifo empties. */ thresh = clib_min (svm_fifo_size (ts->tx_fifo), HSS_FIFO_THRESH); svm_fifo_set_deq_thresh (ts->tx_fifo, thresh); ts->opaque = hs->session_index; ts->session_state = SESSION_STATE_READY; return 0; } static void hss_ts_disconnect_callback (session_t *ts) { hss_main_t *hsm = &hss_main; vnet_disconnect_args_t _a = { 0 }, *a = &_a; a->handle = session_handle (ts); a->app_index = hsm->app_index; vnet_disconnect_session (a); } static void hss_ts_reset_callback (session_t *ts) { hss_main_t *hsm = &hss_main; vnet_disconnect_args_t _a = { 0 }, *a = &_a; a->handle = session_handle (ts); a->app_index = hsm->app_index; vnet_disconnect_session (a); } static int hss_ts_connected_callback (u32 app_index, u32 api_context, session_t *ts, session_error_t err) { clib_warning ("called..."); return -1; } static int hss_add_segment_callback (u32 client_index, u64 segment_handle) { return 0; } static void hss_ts_cleanup (session_t *s, session_cleanup_ntf_t ntf) { hss_session_t *hs; if (ntf == SESSION_CLEANUP_TRANSPORT) return; hs = hss_session_get (s->thread_index, s->opaque); if (!hs) return; hss_detach_cache_entry (hs); hss_session_free (hs); } static session_cb_vft_t hss_cb_vft = { .session_accept_callback = hss_ts_accept_callback, .session_disconnect_callback = hss_ts_disconnect_callback, .session_connected_callback = hss_ts_connected_callback, .add_segment_callback = hss_add_segment_callback, .builtin_app_rx_callback = hss_ts_rx_callback, .builtin_app_tx_callback = hss_ts_tx_callback, .session_reset_callback = hss_ts_reset_callback, .session_cleanup_callback = hss_ts_cleanup, }; static int hss_attach () { vnet_app_add_cert_key_pair_args_t _ck_pair, *ck_pair = &_ck_pair; hss_main_t *hsm = &hss_main; u64 options[APP_OPTIONS_N_OPTIONS]; vnet_app_attach_args_t _a, *a = &_a; u32 segment_size = 128 << 20; clib_memset (a, 0, sizeof (*a)); clib_memset (options, 0, sizeof (options)); if (hsm->private_segment_size) segment_size = hsm->private_segment_size; a->api_client_index = ~0; a->name = format (0, "http_static_server"); a->session_cb_vft = &hss_cb_vft; a->options = options; a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size; a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size; a->options[APP_OPTIONS_RX_FIFO_SIZE] = hsm->fifo_size ? hsm->fifo_size : 8 << 10; a->options[APP_OPTIONS_TX_FIFO_SIZE] = hsm->fifo_size ? hsm->fifo_size : 32 << 10; a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = hsm->prealloc_fifos; a->options[APP_OPTIONS_TLS_ENGINE] = CRYPTO_ENGINE_OPENSSL; if (vnet_application_attach (a)) { vec_free (a->name); clib_warning ("failed to attach server"); return -1; } vec_free (a->name); hsm->app_index = a->app_index; clib_memset (ck_pair, 0, sizeof (*ck_pair)); ck_pair->cert = (u8 *) test_srv_crt_rsa; ck_pair->key = (u8 *) test_srv_key_rsa; ck_pair->cert_len = test_srv_crt_rsa_len; ck_pair->key_len = test_srv_key_rsa_len; vnet_app_add_cert_key_pair (ck_pair); hsm->ckpair_index = ck_pair->index; return 0; } static int hss_transport_needs_crypto (transport_proto_t proto) { return proto == TRANSPORT_PROTO_TLS || proto == TRANSPORT_PROTO_DTLS || proto == TRANSPORT_PROTO_QUIC; } static int hss_listen (void) { hss_main_t *hsm = &hss_main; session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL; vnet_listen_args_t _a, *a = &_a; char *uri = "tcp://0.0.0.0/80"; u8 need_crypto; int rv; clib_memset (a, 0, sizeof (*a)); a->app_index = hsm->app_index; if (hsm->uri) uri = (char *) hsm->uri; if (parse_uri (uri, &sep)) return -1; need_crypto = hss_transport_needs_crypto (a->sep_ext.transport_proto); sep.transport_proto = TRANSPORT_PROTO_HTTP; clib_memcpy (&a->sep_ext, &sep, sizeof (sep)); if (need_crypto) { session_endpoint_alloc_ext_cfg (&a->sep_ext, TRANSPORT_ENDPT_EXT_CFG_CRYPTO); a->sep_ext.ext_cfg->crypto.ckpair_index = hsm->ckpair_index; } rv = vnet_listen (a); if (need_crypto) clib_mem_free (a->sep_ext.ext_cfg); return rv; } static void hss_url_handlers_init (hss_main_t *hsm) { if (!hsm->get_url_handlers) { hsm->get_url_handlers = hash_create_string (0, sizeof (uword)); hsm->post_url_handlers = hash_create_string (0, sizeof (uword)); } hss_builtinurl_json_handlers_init (); } int hss_create (vlib_main_t *vm) { vlib_thread_main_t *vtm = vlib_get_thread_main (); hss_main_t *hsm = &hss_main; u32 num_threads; num_threads = 1 /* main thread */ + vtm->n_threads; vec_validate (hsm->sessions, num_threads - 1); clib_spinlock_init (&hsm->cache_lock); if (hss_attach ()) { clib_warning ("failed to attach server"); return -1; } if (hss_listen ()) { clib_warning ("failed to start listening"); return -1; } /* Init path-to-cache hash table */ BV (clib_bihash_init) (&hsm->name_to_data, "http cache", 128, 32 << 20); if (hsm->enable_url_handlers) hss_url_handlers_init (hsm); return 0; } static clib_error_t * hss_create_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { unformat_input_t _line_input, *line_input = &_line_input; hss_main_t *hsm = &hss_main; clib_error_t *error = 0; u64 seg_size; int rv; if (hsm->app_index != (u32) ~0) return clib_error_return (0, "http server already running..."); hsm->prealloc_fifos = 0; hsm->private_segment_size = 0; hsm->fifo_size = 0; /* 10mb cache limit, before LRU occurs */ hsm->cache_limit = 10 << 20; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) goto no_input; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "www-root %s", &hsm->www_root)) ; else if (unformat (line_input, "prealloc-fifos %d", &hsm->prealloc_fifos)) ; else if (unformat (line_input, "private-segment-size %U", unformat_memory_size, &seg_size)) hsm->private_segment_size = seg_size; else if (unformat (line_input, "fifo-size %d", &hsm->fifo_size)) hsm->fifo_size <<= 10; else if (unformat (line_input, "cache-size %U", unformat_memory_size, &hsm->cache_limit)) ; else if (unformat (line_input, "uri %s", &hsm->uri)) ; else if (unformat (line_input, "debug %d", &hsm->debug_level)) ; else if (unformat (line_input, "debug")) hsm->debug_level = 1; else if (unformat (line_input, "ptr-thresh %U", unformat_memory_size, &hsm->use_ptr_thresh)) ; else if (unformat (line_input, "url-handlers")) hsm->enable_url_handlers = 1; else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); } } unformat_free (line_input); no_input: if (error) goto done; if (hsm->www_root == 0 && !hsm->enable_url_handlers) { error = clib_error_return (0, "Must set www-root or url-handlers"); goto done; } if (hsm->cache_limit < (128 << 10)) { error = clib_error_return (0, "cache-size must be at least 128kb"); vec_free (hsm->www_root); goto done; } vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ ); if ((rv = hss_create (vm))) { error = clib_error_return (0, "server_create returned %d", rv); vec_free (hsm->www_root); } done: return error; } /*? * Enable the static http server * * @cliexpar * This command enables the static http server. Only the www-root * parameter is required * @clistart * http static server www-root /tmp/www uri tcp://0.0.0.0/80 cache-size 2m * @cliend * @cliexcmd{http static server www-root <path> [prealloc-fios <nn>] * [private-segment-size <nnMG>] [fifo-size <nbytes>] [uri <uri>]} ?*/ VLIB_CLI_COMMAND (hss_create_command, static) = { .path = "http static server", .short_help = "http static server www-root <path> [prealloc-fifos <nn>]\n" "[private-segment-size <nnMG>] [fifo-size <nbytes>] [uri <uri>]\n" "[ptr-thresh <nn>] [url-handlers] [debug [nn]]\n", .function = hss_create_command_fn, }; /** \brief format a file cache entry */ static u8 * format_hss_cache_entry (u8 *s, va_list *args) { hss_cache_entry_t *ep = va_arg (*args, hss_cache_entry_t *); f64 now = va_arg (*args, f64); /* Header */ if (ep == 0) { s = format (s, "%40s%12s%20s", "File", "Size", "Age"); return s; } s = format (s, "%40s%12lld%20.2f", ep->filename, vec_len (ep->data), now - ep->last_used); return s; } static u8 * format_hss_session (u8 *s, va_list *args) { hss_session_t *hs = va_arg (*args, hss_session_t *); int __clib_unused verbose = va_arg (*args, int); s = format (s, "\n path %s, data length %u, data_offset %u", hs->path ? hs->path : (u8 *) "[none]", vec_len (hs->data), hs->data_offset); return s; } static clib_error_t * hss_show_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { hss_main_t *hsm = &hss_main; hss_cache_entry_t *ep, **entries = 0; int verbose = 0; int show_cache = 0; int show_sessions = 0; u32 index; f64 now; if (hsm->www_root == 0) return clib_error_return (0, "Static server disabled"); while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "verbose %d", &verbose)) ; else if (unformat (input, "verbose")) verbose = 1; else if (unformat (input, "cache")) show_cache = 1; else if (unformat (input, "sessions")) show_sessions = 1; else break; } if ((show_cache + show_sessions) == 0) return clib_error_return (0, "specify one or more of cache, sessions"); if (show_cache) { if (verbose == 0) { vlib_cli_output (vm, "www_root %s, cache size %lld bytes, limit %lld bytes, " "evictions %lld", hsm->www_root, hsm->cache_size, hsm->cache_limit, hsm->cache_evictions); return 0; } now = vlib_time_now (vm); vlib_cli_output (vm, "%U", format_hss_cache_entry, 0 /* header */, now); for (index = hsm->first_index; index != ~0;) { ep = pool_elt_at_index (hsm->cache_pool, index); index = ep->next_index; vlib_cli_output (vm, "%U", format_hss_cache_entry, ep, now); } vlib_cli_output (vm, "%40s%12lld", "Total Size", hsm->cache_size); vec_free (entries); } if (show_sessions) { u32 *session_indices = 0; hss_session_t *hs; int i, j; hss_cache_lock (); for (i = 0; i < vec_len (hsm->sessions); i++) { pool_foreach (hs, hsm->sessions[i]) { vec_add1 (session_indices, hs - hsm->sessions[i]); } for (j = 0; j < vec_len (session_indices); j++) { vlib_cli_output ( vm, "%U", format_hss_session, pool_elt_at_index (hsm->sessions[i], session_indices[j]), verbose); } vec_reset_length (session_indices); } hss_cache_unlock (); vec_free (session_indices); } return 0; } /*? * Display static http server cache statistics * * @cliexpar * This command shows the contents of the static http server cache * @clistart * show http static server * @cliend * @cliexcmd{show http static server sessions cache [verbose [nn]]} ?*/ VLIB_CLI_COMMAND (hss_show_command, static) = { .path = "show http static server", .short_help = "show http static server sessions cache [verbose [<nn>]]", .function = hss_show_command_fn, }; static clib_error_t * hss_clear_cache_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { hss_main_t *hsm = &hss_main; hss_cache_entry_t *ce; u32 free_index; u32 busy_items = 0; BVT (clib_bihash_kv) kv; if (hsm->www_root == 0) return clib_error_return (0, "Static server disabled"); hss_cache_lock (); /* Walk the LRU list to find active entries */ free_index = hsm->last_index; while (free_index != ~0) { ce = pool_elt_at_index (hsm->cache_pool, free_index); free_index = ce->prev_index; /* Which could be in use... */ if (ce->inuse) { busy_items++; free_index = ce->next_index; continue; } kv.key = (u64) (ce->filename); kv.value = ~0ULL; if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, 0 /* is_add */ ) < 0) { clib_warning ("BUG: cache clear delete '%s' FAILED!", ce->filename); } lru_remove (hsm, ce); hsm->cache_size -= vec_len (ce->data); hsm->cache_evictions++; vec_free (ce->filename); vec_free (ce->data); if (hsm->debug_level > 1) clib_warning ("pool put index %d", ce - hsm->cache_pool); pool_put (hsm->cache_pool, ce); free_index = hsm->last_index; } hss_cache_unlock (); if (busy_items > 0) vlib_cli_output (vm, "Note: %d busy items still in cache...", busy_items); else vlib_cli_output (vm, "Cache cleared..."); return 0; } /*? * Clear the static http server cache, to force the server to * reload content from backing files * * @cliexpar * This command clear the static http server cache * @clistart * clear http static cache * @cliend * @cliexcmd{clear http static cache} ?*/ VLIB_CLI_COMMAND (clear_hss_cache_command, static) = { .path = "clear http static cache", .short_help = "clear http static cache", .function = hss_clear_cache_command_fn, }; static clib_error_t * hss_main_init (vlib_main_t *vm) { hss_main_t *hsm = &hss_main; hsm->app_index = ~0; hsm->vlib_main = vm; hsm->first_index = hsm->last_index = ~0; return 0; } VLIB_INIT_FUNCTION (hss_main_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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