/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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:
* limitations under the License.
*/
-#include <vnet/session/transport_interface.h>
+#include <vnet/session/transport.h>
#include <vnet/session/session.h>
#include <vnet/fib/fib.h>
*/
static double transport_pacer_period;
-#define TRANSPORT_PACER_MIN_MSS 1460
+#define TRANSPORT_PACER_MIN_MSS 1460
+#define TRANSPORT_PACER_MIN_BURST TRANSPORT_PACER_MIN_MSS
+#define TRANSPORT_PACER_MAX_BURST (48 * TRANSPORT_PACER_MIN_MSS)
u8 *
format_transport_proto (u8 * s, va_list * args)
case TRANSPORT_PROTO_UDPC:
s = format (s, "UDPC");
break;
+ case TRANSPORT_PROTO_QUIC:
+ s = format (s, "QUIC");
+ break;
}
return s;
}
case TRANSPORT_PROTO_UDPC:
s = format (s, "U");
break;
+ case TRANSPORT_PROTO_QUIC:
+ s = format (s, "Q");
+ break;
}
return s;
}
format_transport_listen_connection (u8 * s, va_list * args)
{
u32 transport_proto = va_arg (*args, u32);
- u32 listen_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_listener, listen_index);
+ s = (tp_vft->format_listener) (s, args);
return s;
}
*proto = TRANSPORT_PROTO_TCP;
else if (unformat (input, "TCP"))
*proto = TRANSPORT_PROTO_TCP;
+ else if (unformat (input, "udpc"))
+ *proto = TRANSPORT_PROTO_UDPC;
+ else if (unformat (input, "UDPC"))
+ *proto = TRANSPORT_PROTO_UDPC;
else if (unformat (input, "udp"))
*proto = TRANSPORT_PROTO_UDP;
else if (unformat (input, "UDP"))
*proto = TRANSPORT_PROTO_TLS;
else if (unformat (input, "TLS"))
*proto = TRANSPORT_PROTO_TLS;
- else if (unformat (input, "udpc"))
- *proto = TRANSPORT_PROTO_UDPC;
- else if (unformat (input, "UDPC"))
- *proto = TRANSPORT_PROTO_UDPC;
+ else if (unformat (input, "quic"))
+ *proto = TRANSPORT_PROTO_QUIC;
+ else if (unformat (input, "QUIC"))
+ *proto = TRANSPORT_PROTO_QUIC;
else
return 0;
return 1;
return tp_vfts[tp].tx_type;
}
+void
+transport_cleanup (transport_proto_t tp, u32 conn_index, u8 thread_index)
+{
+ tp_vfts[tp].cleanup (conn_index, thread_index);
+}
+
+int
+transport_connect (transport_proto_t tp, transport_endpoint_cfg_t * tep)
+{
+ return tp_vfts[tp].connect (tep);
+}
+
+void
+transport_close (transport_proto_t tp, u32 conn_index, u8 thread_index)
+{
+ tp_vfts[tp].close (conn_index, thread_index);
+}
+
+u32
+transport_start_listen (transport_proto_t tp, u32 session_index,
+ transport_endpoint_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)
{
transport_endpoint_new (void)
{
transport_endpoint_t *tep;
- pool_get (local_endpoints, tep);
+ pool_get_zero (local_endpoints, tep);
return tep;
}
}
}
+static void
+transport_endpoint_mark_used (u8 proto, ip46_address_t * ip, u16 port)
+{
+ transport_endpoint_t *tep;
+ clib_spinlock_lock_if_init (&local_endpoints_lock);
+ tep = transport_endpoint_new ();
+ clib_memcpy_fast (&tep->ip, ip, sizeof (*ip));
+ tep->port = port;
+ transport_endpoint_table_add (&local_endpoints_table, proto, tep,
+ tep - local_endpoints);
+ clib_spinlock_unlock_if_init (&local_endpoints_lock);
+}
+
/**
* 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)
{
- transport_endpoint_t *tep;
- u32 tei;
u16 min = 1024, max = 65535; /* XXX configurable ? */
int tries, limit;
+ u32 tei;
limit = max - min;
port);
if (tei == ENDPOINT_INVALID_INDEX)
{
- clib_spinlock_lock_if_init (&local_endpoints_lock);
- tep = transport_endpoint_new ();
- clib_memcpy (&tep->ip, ip, sizeof (*ip));
- tep->port = port;
- transport_endpoint_table_add (&local_endpoints_table, proto, tep,
- tep - local_endpoints);
- clib_spinlock_unlock_if_init (&local_endpoints_lock);
-
- return tep->port;
+ transport_endpoint_mark_used (proto, ip, port);
+ return port;
}
}
return -1;
}
-int
-transport_alloc_local_endpoint (u8 proto, transport_endpoint_t * rmt,
- ip46_address_t * lcl_addr, u16 * lcl_port)
+static clib_error_t *
+transport_get_interface_ip (u32 sw_if_index, u8 is_ip4, ip46_address_t * addr)
{
- fib_prefix_t prefix;
- fib_node_index_t fei;
- u32 sw_if_index;
- int port;
-
- /*
- * Find the local address and allocate port
- */
-
- /* Find a FIB path to the destination */
- clib_memcpy (&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)
+ if (is_ip4)
{
- clib_warning ("no route to destination");
- return -1;
+ ip4_address_t *ip4;
+ ip4 = ip_interface_get_first_ip (sw_if_index, 1);
+ if (!ip4)
+ return clib_error_return (0, "no routable ip4 address on %U",
+ format_vnet_sw_if_index_name,
+ vnet_get_main (), sw_if_index);
+ 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 clib_error_return (0, "no routable ip6 addresses on %U",
+ format_vnet_sw_if_index_name,
+ vnet_get_main (), sw_if_index);
+ clib_memcpy_fast (&addr->ip6, ip6, sizeof (*ip6));
}
+ return 0;
+}
- sw_if_index = rmt->sw_if_index;
- if (sw_if_index == ENDPOINT_INVALID_INDEX)
- sw_if_index = fib_entry_get_resolving_interface (fei);
+static clib_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)
{
- clib_warning ("no resolving interface for %U", format_ip46_address,
- &rmt->ip, (rmt->is_ip4 == 0) + 1);
- return -1;
+ /* 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 clib_error_return (0, "no route to %U", format_ip46_address,
+ &rmt->ip, (rmt->is_ip4 == 0) + 1);
+
+ sw_if_index = fib_entry_get_resolving_interface (fei);
+ if (sw_if_index == ENDPOINT_INVALID_INDEX)
+ return clib_error_return (0, "no resolving interface for %U",
+ format_ip46_address, &rmt->ip,
+ (rmt->is_ip4 == 0) + 1);
}
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;
+ clib_error_t *error;
+ int port;
+ u32 tei;
- if (rmt->is_ip4)
+ /*
+ * Find the local address
+ */
+ if (ip_is_zero (&rmt_cfg->peer.ip, rmt_cfg->peer.is_ip4))
{
- ip4_address_t *ip4;
- ip4 = ip_interface_get_first_ip (sw_if_index, 1);
- if (!ip4)
+ error = transport_find_local_ip_for_remote (rmt_cfg->peer.sw_if_index,
+ rmt, lcl_addr);
+ if (error)
{
- clib_warning ("no routable ip4 address on %U",
- format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
+ clib_error_report (error);
return -1;
}
- lcl_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)
+ /* 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)
{
- clib_warning ("no routable ip6 addresses on %U",
- format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
+ clib_warning ("Failed to allocate src port");
return -1;
}
- clib_memcpy (&lcl_addr->ip6, ip6, sizeof (*ip6));
+ *lcl_port = port;
}
-
- /* Allocate source port */
- port = transport_alloc_local_port (proto, lcl_addr);
- if (port < 1)
+ else
{
- clib_warning ("Failed to allocate src port");
- return -1;
+ port = clib_net_to_host_u16 (rmt_cfg->peer.port);
+ tei = transport_endpoint_lookup (&local_endpoints_table, proto,
+ lcl_addr, port);
+ if (tei != ENDPOINT_INVALID_INDEX)
+ return -1;
+
+ transport_endpoint_mark_used (proto, lcl_addr, port);
+ *lcl_port = port;
}
- *lcl_port = port;
+
return 0;
}
spacer_max_burst (spacer_t * pacer, u64 norm_time_now)
{
u64 n_periods = norm_time_now - pacer->last_update;
+ u64 inc;
+
+ if (n_periods > 0 && (inc = n_periods * pacer->tokens_per_period) > 10)
+ {
+ pacer->last_update = norm_time_now;
+ pacer->bucket += inc;
+ }
- pacer->last_update = norm_time_now;
- pacer->bucket += n_periods * pacer->tokens_per_period;
- return clib_min (pacer->bucket, pacer->max_burst_size);
+ return clib_min (pacer->bucket, TRANSPORT_PACER_MAX_BURST);
}
static inline void
pacer->bucket -= bytes;
}
-static inline void
-spacer_update_max_burst_size (spacer_t * pacer, u32 max_burst_bytes)
-{
- pacer->max_burst_size = clib_max (max_burst_bytes, TRANSPORT_PACER_MIN_MSS);
-}
-
static inline void
spacer_set_pace_rate (spacer_t * pacer, u64 rate_bytes_per_sec)
{
}
void
-transport_connection_tx_pacer_init (transport_connection_t * tc,
- u32 rate_bytes_per_sec, u32 burst_bytes)
+transport_connection_tx_pacer_reset (transport_connection_t * tc,
+ u32 rate_bytes_per_sec,
+ u32 start_bucket, u64 time_now)
{
- vlib_main_t *vm = vlib_get_main ();
- u64 time_now = vm->clib_time.last_cpu_time;
spacer_t *pacer = &tc->pacer;
-
- tc->flags |= TRANSPORT_CONNECTION_F_IS_TX_PACED;
- spacer_update_max_burst_size (&tc->pacer, burst_bytes);
spacer_set_pace_rate (&tc->pacer, rate_bytes_per_sec);
pacer->last_update = time_now >> SPACER_CPU_TICKS_PER_PERIOD_SHIFT;
- pacer->bucket = burst_bytes;
+ pacer->bucket = start_bucket;
+}
+
+void
+transport_connection_tx_pacer_init (transport_connection_t * tc,
+ u32 rate_bytes_per_sec,
+ u32 initial_bucket)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ tc->flags |= TRANSPORT_CONNECTION_F_IS_TX_PACED;
+ transport_connection_tx_pacer_reset (tc, rate_bytes_per_sec,
+ initial_bucket,
+ vm->clib_time.last_cpu_time);
}
void
transport_connection_tx_pacer_update (transport_connection_t * tc,
u64 bytes_per_sec)
{
- u32 burst_size;
-
- burst_size = bytes_per_sec * transport_dispatch_period (tc->thread_index);
spacer_set_pace_rate (&tc->pacer, bytes_per_sec);
- spacer_update_max_burst_size (&tc->pacer, burst_size);
}
u32
-transport_connection_max_tx_burst (transport_connection_t * tc, u64 time_now)
+transport_connection_tx_pacer_burst (transport_connection_t * tc,
+ u64 time_now)
+{
+ time_now >>= SPACER_CPU_TICKS_PER_PERIOD_SHIFT;
+ return spacer_max_burst (&tc->pacer, time_now);
+}
+
+u32
+transport_connection_snd_space (transport_connection_t * tc, u64 time_now,
+ u16 mss)
{
u32 snd_space, max_paced_burst;
- u32 mss;
snd_space = tp_vfts[tc->proto].send_space (tc);
if (transport_connection_is_tx_paced (tc))
{
time_now >>= SPACER_CPU_TICKS_PER_PERIOD_SHIFT;
max_paced_burst = spacer_max_burst (&tc->pacer, time_now);
- mss = tp_vfts[tc->proto].send_mss (tc);
max_paced_burst = (max_paced_burst < mss) ? 0 : max_paced_burst;
snd_space = clib_min (snd_space, max_paced_burst);
snd_space = snd_space - snd_space % mss;
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_init_tx_pacers_period (void)
{
transport_init (void)
{
vlib_thread_main_t *vtm = vlib_get_thread_main ();
- session_manager_main_t *smm = vnet_get_session_manager_main ();
+ session_main_t *smm = vnet_get_session_main ();
u32 num_threads;
if (smm->local_endpoints_table_buckets == 0)