| /* |
| * Copyright (c) 2017-2019 Cisco and/or its affiliates. |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vnet/session/transport.h> |
| #include <vnet/session/session.h> |
| #include <vnet/fib/fib.h> |
| |
| typedef struct local_endpoint_ |
| { |
| transport_endpoint_t ep; |
| int refcnt; |
| } local_endpoint_t; |
| |
| /** |
| * Per-type vector of transport protocol virtual function tables |
| */ |
| transport_proto_vft_t *tp_vfts; |
| |
| /* |
| * Port allocator seed |
| */ |
| static u32 port_allocator_seed; |
| |
| /* |
| * Local endpoints table |
| */ |
| static transport_endpoint_table_t local_endpoints_table; |
| |
| /* |
| * Pool of local endpoints |
| */ |
| static local_endpoint_t *local_endpoints; |
| |
| /* |
| * Local endpoints pool lock |
| */ |
| static clib_spinlock_t local_endpoints_lock; |
| |
| u8 * |
| format_transport_proto (u8 * s, va_list * args) |
| { |
| u32 transport_proto = va_arg (*args, u32); |
| |
| if (tp_vfts[transport_proto].transport_options.name) |
| s = format (s, "%s", tp_vfts[transport_proto].transport_options.name); |
| else |
| s = format (s, "n/a"); |
| |
| return s; |
| } |
| |
| u8 * |
| format_transport_proto_short (u8 * s, va_list * args) |
| { |
| u32 transport_proto = va_arg (*args, u32); |
| char *short_name; |
| |
| short_name = tp_vfts[transport_proto].transport_options.short_name; |
| if (short_name) |
| s = format (s, "%s", short_name); |
| else |
| s = format (s, "NA"); |
| |
| return s; |
| } |
| |
| u8 * |
| format_transport_connection (u8 * s, va_list * args) |
| { |
| u32 transport_proto = va_arg (*args, u32); |
| u32 conn_index = va_arg (*args, u32); |
| u32 thread_index = va_arg (*args, u32); |
| u32 verbose = va_arg (*args, u32); |
| transport_proto_vft_t *tp_vft; |
| transport_connection_t *tc; |
| u32 indent; |
| |
| tp_vft = transport_protocol_get_vft (transport_proto); |
| if (!tp_vft) |
| return s; |
| |
| s = format (s, "%U", tp_vft->format_connection, conn_index, thread_index, |
| verbose); |
| tc = tp_vft->get_connection (conn_index, thread_index); |
| if (tc && verbose > 1) |
| { |
| indent = format_get_indent (s) + 1; |
| if (transport_connection_is_tx_paced (tc)) |
| s = format (s, "%Upacer: %U\n", format_white_space, indent, |
| format_transport_pacer, &tc->pacer, tc->thread_index); |
| s = format (s, "%Utransport: flags 0x%x\n", format_white_space, indent, |
| tc->flags); |
| } |
| return s; |
| } |
| |
| u8 * |
| format_transport_listen_connection (u8 * s, va_list * args) |
| { |
| u32 transport_proto = va_arg (*args, u32); |
| transport_proto_vft_t *tp_vft; |
| |
| tp_vft = transport_protocol_get_vft (transport_proto); |
| if (!tp_vft) |
| return s; |
| |
| s = (tp_vft->format_listener) (s, args); |
| return s; |
| } |
| |
| u8 * |
| format_transport_half_open_connection (u8 * s, va_list * args) |
| { |
| u32 transport_proto = va_arg (*args, u32); |
| u32 ho_index = va_arg (*args, u32); |
| transport_proto_vft_t *tp_vft; |
| |
| tp_vft = transport_protocol_get_vft (transport_proto); |
| if (!tp_vft) |
| return s; |
| |
| s = format (s, "%U", tp_vft->format_half_open, ho_index); |
| return s; |
| } |
| |
| static u8 |
| unformat_transport_str_match (unformat_input_t * input, const char *str) |
| { |
| int i; |
| |
| if (strlen (str) > vec_len (input->buffer) - input->index) |
| return 0; |
| |
| for (i = 0; i < strlen (str); i++) |
| { |
| if (input->buffer[i + input->index] != str[i]) |
| return 0; |
| } |
| return 1; |
| } |
| |
| uword |
| unformat_transport_proto (unformat_input_t * input, va_list * args) |
| { |
| u32 *proto = va_arg (*args, u32 *); |
| transport_proto_vft_t *tp_vft; |
| u8 longest_match = 0, match; |
| char *str, *str_match = 0; |
| transport_proto_t tp; |
| |
| for (tp = 0; tp < vec_len (tp_vfts); tp++) |
| { |
| tp_vft = &tp_vfts[tp]; |
| str = tp_vft->transport_options.name; |
| if (!str) |
| continue; |
| if (unformat_transport_str_match (input, str)) |
| { |
| match = strlen (str); |
| if (match > longest_match) |
| { |
| *proto = tp; |
| longest_match = match; |
| str_match = str; |
| } |
| } |
| } |
| if (longest_match) |
| { |
| (void) unformat (input, str_match); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| u8 * |
| format_transport_protos (u8 * s, va_list * args) |
| { |
| transport_proto_vft_t *tp_vft; |
| |
| vec_foreach (tp_vft, tp_vfts) |
| s = format (s, "%s\n", tp_vft->transport_options.name); |
| |
| return s; |
| } |
| |
| u32 |
| transport_endpoint_lookup (transport_endpoint_table_t * ht, u8 proto, |
| ip46_address_t * ip, u16 port) |
| { |
| clib_bihash_kv_24_8_t kv; |
| int rv; |
| |
| kv.key[0] = ip->as_u64[0]; |
| kv.key[1] = ip->as_u64[1]; |
| kv.key[2] = (u64) port << 8 | (u64) proto; |
| |
| rv = clib_bihash_search_inline_24_8 (ht, &kv); |
| if (rv == 0) |
| return kv.value; |
| |
| return ENDPOINT_INVALID_INDEX; |
| } |
| |
| void |
| transport_endpoint_table_add (transport_endpoint_table_t * ht, u8 proto, |
| transport_endpoint_t * te, u32 value) |
| { |
| clib_bihash_kv_24_8_t kv; |
| |
| kv.key[0] = te->ip.as_u64[0]; |
| kv.key[1] = te->ip.as_u64[1]; |
| kv.key[2] = (u64) te->port << 8 | (u64) proto; |
| kv.value = value; |
| |
| clib_bihash_add_del_24_8 (ht, &kv, 1); |
| } |
| |
| void |
| transport_endpoint_table_del (transport_endpoint_table_t * ht, u8 proto, |
| transport_endpoint_t * te) |
| { |
| clib_bihash_kv_24_8_t kv; |
| |
| kv.key[0] = te->ip.as_u64[0]; |
| kv.key[1] = te->ip.as_u64[1]; |
| kv.key[2] = (u64) te->port << 8 | (u64) proto; |
| |
| clib_bihash_add_del_24_8 (ht, &kv, 0); |
| } |
| |
| void |
| transport_register_protocol (transport_proto_t transport_proto, |
| const transport_proto_vft_t * vft, |
| fib_protocol_t fib_proto, u32 output_node) |
| { |
| u8 is_ip4 = fib_proto == FIB_PROTOCOL_IP4; |
| |
| vec_validate (tp_vfts, transport_proto); |
| tp_vfts[transport_proto] = *vft; |
| |
| session_register_transport (transport_proto, vft, is_ip4, output_node); |
| } |
| |
| transport_proto_t |
| transport_register_new_protocol (const transport_proto_vft_t * vft, |
| fib_protocol_t fib_proto, u32 output_node) |
| { |
| transport_proto_t transport_proto; |
| u8 is_ip4; |
| |
| transport_proto = session_add_transport_proto (); |
| is_ip4 = fib_proto == FIB_PROTOCOL_IP4; |
| |
| vec_validate (tp_vfts, transport_proto); |
| tp_vfts[transport_proto] = *vft; |
| |
| session_register_transport (transport_proto, vft, is_ip4, output_node); |
| |
| return transport_proto; |
| } |
| |
| /** |
| * Get transport virtual function table |
| * |
| * @param type - session type (not protocol type) |
| */ |
| transport_proto_vft_t * |
| transport_protocol_get_vft (transport_proto_t transport_proto) |
| { |
| if (transport_proto >= vec_len (tp_vfts)) |
| return 0; |
| return &tp_vfts[transport_proto]; |
| } |
| |
| transport_service_type_t |
| transport_protocol_service_type (transport_proto_t tp) |
| { |
| return tp_vfts[tp].transport_options.service_type; |
| } |
| |
| transport_tx_fn_type_t |
| transport_protocol_tx_fn_type (transport_proto_t tp) |
| { |
| return tp_vfts[tp].transport_options.tx_type; |
| } |
| |
| void |
| transport_cleanup (transport_proto_t tp, u32 conn_index, u8 thread_index) |
| { |
| tp_vfts[tp].cleanup (conn_index, thread_index); |
| } |
| |
| void |
| transport_cleanup_half_open (transport_proto_t tp, u32 conn_index) |
| { |
| if (tp_vfts[tp].cleanup_ho) |
| tp_vfts[tp].cleanup_ho (conn_index); |
| } |
| |
| int |
| transport_connect (transport_proto_t tp, transport_endpoint_cfg_t * tep) |
| { |
| return tp_vfts[tp].connect (tep); |
| } |
| |
| void |
| transport_half_close (transport_proto_t tp, u32 conn_index, u8 thread_index) |
| { |
| if (tp_vfts[tp].half_close) |
| tp_vfts[tp].half_close (conn_index, thread_index); |
| } |
| |
| void |
| transport_close (transport_proto_t tp, u32 conn_index, u8 thread_index) |
| { |
| tp_vfts[tp].close (conn_index, thread_index); |
| } |
| |
| void |
| transport_reset (transport_proto_t tp, u32 conn_index, u8 thread_index) |
| { |
| if (tp_vfts[tp].reset) |
| tp_vfts[tp].reset (conn_index, thread_index); |
| else |
| tp_vfts[tp].close (conn_index, thread_index); |
| } |
| |
| u32 |
| transport_start_listen (transport_proto_t tp, u32 session_index, |
| transport_endpoint_cfg_t *tep) |
| { |
| return tp_vfts[tp].start_listen (session_index, tep); |
| } |
| |
| u32 |
| transport_stop_listen (transport_proto_t tp, u32 conn_index) |
| { |
| return tp_vfts[tp].stop_listen (conn_index); |
| } |
| |
| u8 |
| transport_protocol_is_cl (transport_proto_t tp) |
| { |
| return (tp_vfts[tp].transport_options.service_type == TRANSPORT_SERVICE_CL); |
| } |
| |
| always_inline void |
| default_get_transport_endpoint (transport_connection_t * tc, |
| transport_endpoint_t * tep, u8 is_lcl) |
| { |
| if (is_lcl) |
| { |
| tep->port = tc->lcl_port; |
| tep->is_ip4 = tc->is_ip4; |
| clib_memcpy_fast (&tep->ip, &tc->lcl_ip, sizeof (tc->lcl_ip)); |
| } |
| else |
| { |
| tep->port = tc->rmt_port; |
| tep->is_ip4 = tc->is_ip4; |
| clib_memcpy_fast (&tep->ip, &tc->rmt_ip, sizeof (tc->rmt_ip)); |
| } |
| } |
| |
| void |
| transport_get_endpoint (transport_proto_t tp, u32 conn_index, |
| u32 thread_index, transport_endpoint_t * tep, |
| u8 is_lcl) |
| { |
| if (tp_vfts[tp].get_transport_endpoint) |
| tp_vfts[tp].get_transport_endpoint (conn_index, thread_index, tep, |
| is_lcl); |
| else |
| { |
| transport_connection_t *tc; |
| tc = transport_get_connection (tp, conn_index, thread_index); |
| default_get_transport_endpoint (tc, tep, is_lcl); |
| } |
| } |
| |
| void |
| transport_get_listener_endpoint (transport_proto_t tp, u32 conn_index, |
| transport_endpoint_t * tep, u8 is_lcl) |
| { |
| if (tp_vfts[tp].get_transport_listener_endpoint) |
| tp_vfts[tp].get_transport_listener_endpoint (conn_index, tep, is_lcl); |
| else |
| { |
| transport_connection_t *tc; |
| tc = transport_get_listener (tp, conn_index); |
| default_get_transport_endpoint (tc, tep, is_lcl); |
| } |
| } |
| |
| int |
| transport_connection_attribute (transport_proto_t tp, u32 conn_index, |
| u8 thread_index, u8 is_get, |
| transport_endpt_attr_t *attr) |
| { |
| if (!tp_vfts[tp].attribute) |
| return -1; |
| |
| return tp_vfts[tp].attribute (conn_index, thread_index, is_get, attr); |
| } |
| |
| #define PORT_MASK ((1 << 16)- 1) |
| |
| void |
| transport_endpoint_free (u32 tepi) |
| { |
| pool_put_index (local_endpoints, tepi); |
| } |
| |
| static void |
| transport_endpoint_pool_realloc_rpc (void *rpc_args) |
| { |
| pool_realloc_safe_aligned (local_endpoints, 0); |
| } |
| |
| always_inline local_endpoint_t * |
| transport_endpoint_alloc (void) |
| { |
| local_endpoint_t *lep; |
| |
| ASSERT (vlib_get_thread_index () <= transport_cl_thread ()); |
| pool_get_aligned_safe (local_endpoints, lep, transport_cl_thread (), |
| transport_endpoint_pool_realloc_rpc, 0); |
| return lep; |
| } |
| |
| void |
| transport_endpoint_cleanup (u8 proto, ip46_address_t * lcl_ip, u16 port) |
| { |
| local_endpoint_t *lep; |
| u32 lepi; |
| |
| /* Cleanup local endpoint if this was an active connect */ |
| lepi = transport_endpoint_lookup (&local_endpoints_table, proto, lcl_ip, |
| clib_net_to_host_u16 (port)); |
| if (lepi == ENDPOINT_INVALID_INDEX) |
| return; |
| |
| lep = pool_elt_at_index (local_endpoints, lepi); |
| if (!clib_atomic_sub_fetch (&lep->refcnt, 1)) |
| { |
| transport_endpoint_table_del (&local_endpoints_table, proto, &lep->ep); |
| |
| /* All workers can free connections. Synchronize access to pool */ |
| clib_spinlock_lock (&local_endpoints_lock); |
| transport_endpoint_free (lepi); |
| clib_spinlock_unlock (&local_endpoints_lock); |
| } |
| } |
| |
| static int |
| transport_endpoint_mark_used (u8 proto, ip46_address_t *ip, u16 port) |
| { |
| local_endpoint_t *lep; |
| u32 tei; |
| |
| ASSERT (vlib_get_thread_index () <= transport_cl_thread ()); |
| |
| tei = transport_endpoint_lookup (&local_endpoints_table, proto, ip, port); |
| if (tei != ENDPOINT_INVALID_INDEX) |
| return SESSION_E_PORTINUSE; |
| |
| /* Pool reallocs with worker barrier */ |
| lep = transport_endpoint_alloc (); |
| clib_memcpy_fast (&lep->ep.ip, ip, sizeof (*ip)); |
| lep->ep.port = port; |
| lep->refcnt = 1; |
| |
| transport_endpoint_table_add (&local_endpoints_table, proto, &lep->ep, |
| lep - local_endpoints); |
| |
| return 0; |
| } |
| |
| void |
| transport_share_local_endpoint (u8 proto, ip46_address_t * lcl_ip, u16 port) |
| { |
| local_endpoint_t *lep; |
| u32 lepi; |
| |
| lepi = transport_endpoint_lookup (&local_endpoints_table, proto, lcl_ip, |
| clib_net_to_host_u16 (port)); |
| if (lepi != ENDPOINT_INVALID_INDEX) |
| { |
| lep = pool_elt_at_index (local_endpoints, lepi); |
| clib_atomic_add_fetch (&lep->refcnt, 1); |
| } |
| } |
| |
| /** |
| * Allocate local port and add if successful add entry to local endpoint |
| * table to mark the pair as used. |
| */ |
| int |
| transport_alloc_local_port (u8 proto, ip46_address_t * ip) |
| { |
| u16 min = 1024, max = 65535; /* XXX configurable ? */ |
| int tries, limit; |
| |
| limit = max - min; |
| |
| /* Only support active opens from one of ctrl threads */ |
| ASSERT (vlib_get_thread_index () <= transport_cl_thread ()); |
| |
| /* Search for first free slot */ |
| for (tries = 0; tries < limit; tries++) |
| { |
| u16 port = 0; |
| |
| /* Find a port in the specified range */ |
| while (1) |
| { |
| port = random_u32 (&port_allocator_seed) & PORT_MASK; |
| if (PREDICT_TRUE (port >= min && port < max)) |
| break; |
| } |
| |
| if (!transport_endpoint_mark_used (proto, ip, port)) |
| return port; |
| } |
| return -1; |
| } |
| |
| static session_error_t |
| transport_get_interface_ip (u32 sw_if_index, u8 is_ip4, ip46_address_t * addr) |
| { |
| if (is_ip4) |
| { |
| ip4_address_t *ip4; |
| ip4 = ip_interface_get_first_ip (sw_if_index, 1); |
| if (!ip4) |
| return SESSION_E_NOIP; |
| addr->ip4.as_u32 = ip4->as_u32; |
| } |
| else |
| { |
| ip6_address_t *ip6; |
| ip6 = ip_interface_get_first_ip (sw_if_index, 0); |
| if (ip6 == 0) |
| return SESSION_E_NOIP; |
| clib_memcpy_fast (&addr->ip6, ip6, sizeof (*ip6)); |
| } |
| return 0; |
| } |
| |
| static session_error_t |
| transport_find_local_ip_for_remote (u32 *sw_if_index, |
| transport_endpoint_t *rmt, |
| ip46_address_t *lcl_addr) |
| { |
| fib_node_index_t fei; |
| fib_prefix_t prefix; |
| |
| if (*sw_if_index == ENDPOINT_INVALID_INDEX) |
| { |
| /* Find a FIB path to the destination */ |
| clib_memcpy_fast (&prefix.fp_addr, &rmt->ip, sizeof (rmt->ip)); |
| prefix.fp_proto = rmt->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6; |
| prefix.fp_len = rmt->is_ip4 ? 32 : 128; |
| |
| ASSERT (rmt->fib_index != ENDPOINT_INVALID_INDEX); |
| fei = fib_table_lookup (rmt->fib_index, &prefix); |
| |
| /* Couldn't find route to destination. Bail out. */ |
| if (fei == FIB_NODE_INDEX_INVALID) |
| return SESSION_E_NOROUTE; |
| |
| *sw_if_index = fib_entry_get_resolving_interface (fei); |
| if (*sw_if_index == ENDPOINT_INVALID_INDEX) |
| return SESSION_E_NOINTF; |
| } |
| |
| clib_memset (lcl_addr, 0, sizeof (*lcl_addr)); |
| return transport_get_interface_ip (*sw_if_index, rmt->is_ip4, lcl_addr); |
| } |
| |
| int |
| transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t * rmt_cfg, |
| ip46_address_t * lcl_addr, u16 * lcl_port) |
| { |
| transport_endpoint_t *rmt = (transport_endpoint_t *) rmt_cfg; |
| session_error_t error; |
| int port; |
| |
| /* |
| * Find the local address |
| */ |
| if (ip_is_zero (&rmt_cfg->peer.ip, rmt_cfg->peer.is_ip4)) |
| { |
| error = transport_find_local_ip_for_remote (&rmt_cfg->peer.sw_if_index, |
| rmt, lcl_addr); |
| if (error) |
| return error; |
| } |
| else |
| { |
| /* Assume session layer vetted this address */ |
| clib_memcpy_fast (lcl_addr, &rmt_cfg->peer.ip, |
| sizeof (rmt_cfg->peer.ip)); |
| } |
| |
| /* |
| * Allocate source port |
| */ |
| if (rmt_cfg->peer.port == 0) |
| { |
| port = transport_alloc_local_port (proto, lcl_addr); |
| if (port < 1) |
| return SESSION_E_NOPORT; |
| *lcl_port = port; |
| } |
| else |
| { |
| port = clib_net_to_host_u16 (rmt_cfg->peer.port); |
| *lcl_port = port; |
| |
| return transport_endpoint_mark_used (proto, lcl_addr, port); |
| } |
| |
| return 0; |
| } |
| |
| u8 * |
| format_clib_us_time (u8 * s, va_list * args) |
| { |
| clib_us_time_t t = va_arg (*args, clib_us_time_t); |
| if (t < 1e3) |
| s = format (s, "%u us", t); |
| else |
| s = format (s, "%.3f s", (f64) t * CLIB_US_TIME_PERIOD); |
| return s; |
| } |
| |
| u8 * |
| format_transport_pacer (u8 * s, va_list * args) |
| { |
| spacer_t *pacer = va_arg (*args, spacer_t *); |
| u32 thread_index = va_arg (*args, int); |
| clib_us_time_t now, diff; |
| |
| now = transport_us_time_now (thread_index); |
| diff = now - pacer->last_update; |
| s = format (s, "rate %lu bucket %ld t/p %.3f last_update %U burst %u", |
| pacer->bytes_per_sec, pacer->bucket, pacer->tokens_per_period, |
| format_clib_us_time, diff, pacer->max_burst); |
| return s; |
| } |
| |
| static inline u32 |
| spacer_max_burst (spacer_t * pacer, clib_us_time_t time_now) |
| { |
| u64 n_periods = (time_now - pacer->last_update); |
| i64 inc; |
| |
| if ((inc = (f32) n_periods * pacer->tokens_per_period) > 10) |
| { |
| pacer->last_update = time_now; |
| pacer->bucket = clib_min (pacer->bucket + inc, (i64) pacer->max_burst); |
| } |
| |
| return pacer->bucket >= 0 ? pacer->max_burst : 0; |
| } |
| |
| static inline void |
| spacer_update_bucket (spacer_t * pacer, u32 bytes) |
| { |
| pacer->bucket -= bytes; |
| } |
| |
| static inline void |
| spacer_set_pace_rate (spacer_t * pacer, u64 rate_bytes_per_sec, |
| clib_us_time_t rtt, clib_time_type_t sec_per_loop) |
| { |
| clib_us_time_t max_time; |
| |
| ASSERT (rate_bytes_per_sec != 0); |
| pacer->bytes_per_sec = rate_bytes_per_sec; |
| pacer->tokens_per_period = rate_bytes_per_sec * CLIB_US_TIME_PERIOD; |
| |
| /* Allow a min number of bursts per rtt, if their size is acceptable. Goal |
| * is to spread the sending of data over the rtt but to also allow for some |
| * coalescing that can potentially |
| * 1) reduce load on session layer by reducing scheduling frequency for a |
| * session and |
| * 2) optimize sending when tso if available |
| * |
| * Max "time-length" of a burst cannot be less than 1us or more than 1ms. |
| */ |
| max_time = clib_max (rtt / TRANSPORT_PACER_BURSTS_PER_RTT, |
| (clib_us_time_t) (sec_per_loop * CLIB_US_TIME_FREQ)); |
| max_time = clib_clamp (max_time, 1 /* 1us */ , 1000 /* 1ms */ ); |
| pacer->max_burst = (rate_bytes_per_sec * max_time) * CLIB_US_TIME_PERIOD; |
| pacer->max_burst = clib_clamp (pacer->max_burst, TRANSPORT_PACER_MIN_BURST, |
| TRANSPORT_PACER_MAX_BURST); |
| } |
| |
| static inline u64 |
| spacer_pace_rate (spacer_t * pacer) |
| { |
| return pacer->bytes_per_sec; |
| } |
| |
| static inline void |
| spacer_reset (spacer_t * pacer, clib_us_time_t time_now, u64 bucket) |
| { |
| pacer->last_update = time_now; |
| pacer->bucket = bucket; |
| } |
| |
| void |
| transport_connection_tx_pacer_reset (transport_connection_t * tc, |
| u64 rate_bytes_per_sec, u32 start_bucket, |
| clib_us_time_t rtt) |
| { |
| spacer_set_pace_rate (&tc->pacer, rate_bytes_per_sec, rtt, |
| transport_seconds_per_loop (tc->thread_index)); |
| spacer_reset (&tc->pacer, transport_us_time_now (tc->thread_index), |
| start_bucket); |
| } |
| |
| void |
| transport_connection_tx_pacer_reset_bucket (transport_connection_t * tc, |
| u32 bucket) |
| { |
| spacer_reset (&tc->pacer, transport_us_time_now (tc->thread_index), bucket); |
| } |
| |
| void |
| transport_connection_tx_pacer_init (transport_connection_t * tc, |
| u64 rate_bytes_per_sec, |
| u32 initial_bucket) |
| { |
| tc->flags |= TRANSPORT_CONNECTION_F_IS_TX_PACED; |
| transport_connection_tx_pacer_reset (tc, rate_bytes_per_sec, |
| initial_bucket, 1e6); |
| } |
| |
| void |
| transport_connection_tx_pacer_update (transport_connection_t * tc, |
| u64 bytes_per_sec, clib_us_time_t rtt) |
| { |
| spacer_set_pace_rate (&tc->pacer, bytes_per_sec, rtt, |
| transport_seconds_per_loop (tc->thread_index)); |
| } |
| |
| u32 |
| transport_connection_tx_pacer_burst (transport_connection_t * tc) |
| { |
| return spacer_max_burst (&tc->pacer, |
| transport_us_time_now (tc->thread_index)); |
| } |
| |
| u64 |
| transport_connection_tx_pacer_rate (transport_connection_t * tc) |
| { |
| return spacer_pace_rate (&tc->pacer); |
| } |
| |
| void |
| transport_connection_update_tx_bytes (transport_connection_t * tc, u32 bytes) |
| { |
| if (transport_connection_is_tx_paced (tc)) |
| spacer_update_bucket (&tc->pacer, bytes); |
| } |
| |
| void |
| transport_connection_tx_pacer_update_bytes (transport_connection_t * tc, |
| u32 bytes) |
| { |
| spacer_update_bucket (&tc->pacer, bytes); |
| } |
| |
| void |
| transport_update_pacer_time (u32 thread_index, clib_time_type_t now) |
| { |
| session_wrk_update_time (session_main_get_worker (thread_index), now); |
| } |
| |
| void |
| transport_connection_reschedule (transport_connection_t * tc) |
| { |
| tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED; |
| transport_connection_tx_pacer_reset_bucket (tc, 0 /* bucket */); |
| if (transport_max_tx_dequeue (tc)) |
| sesssion_reschedule_tx (tc); |
| else |
| { |
| session_t *s = session_get (tc->s_index, tc->thread_index); |
| svm_fifo_unset_event (s->tx_fifo); |
| if (svm_fifo_max_dequeue_cons (s->tx_fifo)) |
| if (svm_fifo_set_event (s->tx_fifo)) |
| sesssion_reschedule_tx (tc); |
| } |
| } |
| |
| void |
| transport_fifos_init_ooo (transport_connection_t * tc) |
| { |
| session_t *s = session_get (tc->s_index, tc->thread_index); |
| svm_fifo_init_ooo_lookup (s->rx_fifo, 0 /* ooo enq */ ); |
| svm_fifo_init_ooo_lookup (s->tx_fifo, 1 /* ooo deq */ ); |
| } |
| |
| void |
| transport_update_time (clib_time_type_t time_now, u8 thread_index) |
| { |
| transport_proto_vft_t *vft; |
| vec_foreach (vft, tp_vfts) |
| { |
| if (vft->update_time) |
| (vft->update_time) (time_now, thread_index); |
| } |
| } |
| |
| void |
| transport_enable_disable (vlib_main_t * vm, u8 is_en) |
| { |
| transport_proto_vft_t *vft; |
| vec_foreach (vft, tp_vfts) |
| { |
| if (vft->enable) |
| (vft->enable) (vm, is_en); |
| |
| if (vft->update_time) |
| session_register_update_time_fn (vft->update_time, is_en); |
| } |
| } |
| |
| void |
| transport_init (void) |
| { |
| vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| session_main_t *smm = vnet_get_session_main (); |
| u32 num_threads; |
| |
| if (smm->local_endpoints_table_buckets == 0) |
| smm->local_endpoints_table_buckets = 250000; |
| if (smm->local_endpoints_table_memory == 0) |
| smm->local_endpoints_table_memory = 512 << 20; |
| |
| /* Initialize [port-allocator] random number seed */ |
| port_allocator_seed = (u32) clib_cpu_time_now (); |
| |
| clib_bihash_init_24_8 (&local_endpoints_table, "local endpoints table", |
| smm->local_endpoints_table_buckets, |
| smm->local_endpoints_table_memory); |
| clib_spinlock_init (&local_endpoints_lock); |
| |
| num_threads = 1 /* main thread */ + vtm->n_threads; |
| if (num_threads > 1) |
| { |
| /* Main not polled if there are workers */ |
| smm->transport_cl_thread = 1; |
| } |
| } |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |