*/
static clib_spinlock_t local_endpoints_lock;
+/*
+ * Period used by transport pacers. Initialized by session layer
+ */
+static double transport_pacer_period;
+
+#define TRANSPORT_PACER_MIN_MSS 1460
+#define TRANSPORT_PACER_MIN_BURST TRANSPORT_PACER_MIN_MSS
+
u8 *
format_transport_proto (u8 * s, va_list * args)
{
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 && transport_connection_is_tx_paced (tc) && verbose > 1)
+ {
+ indent = format_get_indent (s) + 1;
+ s = format (s, "%Upacer: %U\n", format_white_space, indent,
+ format_transport_pacer, &tc->pacer);
+ }
+ return s;
+}
+
+u8 *
+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);
+ return s;
+}
+
+u8 *
+format_transport_half_open_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_half_open, listen_index);
+ return s;
+}
+
uword
unformat_transport_proto (unformat_input_t * input, va_list * args)
{
return tp_vfts[tp].service_type;
}
+transport_tx_fn_type_t
+transport_protocol_tx_fn_type (transport_proto_t tp)
+{
+ return tp_vfts[tp].tx_type;
+}
+
+u8
+transport_protocol_is_cl (transport_proto_t tp)
+{
+ return (tp_vfts[tp].service_type == TRANSPORT_SERVICE_CL);
+}
+
#define PORT_MASK ((1 << 16)- 1)
void
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 (&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;
}
+static clib_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 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 (&addr->ip6, ip6, sizeof (*ip6));
+ }
+ return 0;
+}
+
+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)
+ {
+ /* 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)
+ 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_t * rmt,
+transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t * rmt_cfg,
ip46_address_t * lcl_addr, u16 * lcl_port)
{
- fib_prefix_t prefix;
- fib_node_index_t fei;
- u32 sw_if_index;
+ transport_endpoint_t *rmt = (transport_endpoint_t *) rmt_cfg;
+ clib_error_t *error;
int port;
+ u32 tei;
/*
- * Find the local address and allocate port
+ * Find the local address
*/
-
- /* 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 (ip_is_zero (&rmt_cfg->peer.ip, rmt_cfg->peer.is_ip4))
{
- clib_warning ("no route to destination");
- return -1;
+ error = transport_find_local_ip_for_remote (rmt_cfg->peer.sw_if_index,
+ rmt, lcl_addr);
+ if (error)
+ return -1;
}
-
- sw_if_index = rmt->sw_if_index;
- if (sw_if_index == ENDPOINT_INVALID_INDEX)
- sw_if_index = fib_entry_get_resolving_interface (fei);
-
- if (sw_if_index == ENDPOINT_INVALID_INDEX)
+ else
{
- clib_warning ("no resolving interface for %U", format_ip46_address,
- &rmt->ip, (rmt->is_ip4 == 0) + 1);
- return -1;
+ /* Assume session layer vetted this address */
+ clib_memcpy (lcl_addr, &rmt_cfg->peer.ip, sizeof (rmt_cfg->peer.ip));
}
- memset (lcl_addr, 0, sizeof (*lcl_addr));
-
- if (rmt->is_ip4)
+ /*
+ * Allocate source port
+ */
+ if (rmt_cfg->peer.port == 0)
{
- ip4_address_t *ip4;
- ip4 = ip_interface_get_first_ip (sw_if_index, 1);
- if (!ip4)
+ port = transport_alloc_local_port (proto, lcl_addr);
+ if (port < 1)
{
- clib_warning ("no routable ip4 address on %U",
- format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
+ clib_warning ("Failed to allocate src port");
return -1;
}
- lcl_addr->ip4.as_u32 = ip4->as_u32;
+ *lcl_port = port;
}
else
{
- ip6_address_t *ip6;
- ip6 = ip_interface_get_first_ip (sw_if_index, 0);
- if (ip6 == 0)
- {
- clib_warning ("no routable ip6 addresses on %U",
- format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
- return -1;
- }
- clib_memcpy (&lcl_addr->ip6, ip6, sizeof (*ip6));
+ 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;
}
- /* Allocate source port */
- port = transport_alloc_local_port (proto, lcl_addr);
- if (port < 1)
+ return 0;
+}
+
+#define SPACER_CPU_TICKS_PER_PERIOD_SHIFT 10
+#define SPACER_CPU_TICKS_PER_PERIOD (1 << SPACER_CPU_TICKS_PER_PERIOD_SHIFT)
+
+u8 *
+format_transport_pacer (u8 * s, va_list * args)
+{
+ spacer_t *pacer = va_arg (*args, spacer_t *);
+
+ s = format (s, "bucket %u max_burst %u tokens/period %.3f last_update %x",
+ pacer->bucket, pacer->max_burst_size, pacer->tokens_per_period,
+ pacer->last_update);
+ return s;
+}
+
+static inline u32
+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)
{
- clib_warning ("Failed to allocate src port");
- return -1;
+ pacer->last_update = norm_time_now;
+ pacer->bucket += inc;
}
- *lcl_port = port;
- return 0;
+
+ return clib_min (pacer->bucket, pacer->max_burst_size);
+}
+
+static inline void
+spacer_update_bucket (spacer_t * pacer, u32 bytes)
+{
+ ASSERT (pacer->bucket >= bytes);
+ 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_BURST);
+}
+
+static inline void
+spacer_set_pace_rate (spacer_t * pacer, u64 rate_bytes_per_sec)
+{
+ ASSERT (rate_bytes_per_sec != 0);
+ pacer->tokens_per_period = rate_bytes_per_sec / transport_pacer_period;
+}
+
+void
+transport_connection_tx_pacer_reset (transport_connection_t * tc,
+ u32 rate_bytes_per_sec,
+ u32 start_bucket, u64 time_now)
+{
+ spacer_t *pacer = &tc->pacer;
+ f64 dispatch_period;
+ u32 burst_size;
+
+ dispatch_period = transport_dispatch_period (tc->thread_index);
+ burst_size = rate_bytes_per_sec * dispatch_period;
+ spacer_update_max_burst_size (&tc->pacer, burst_size);
+ spacer_set_pace_rate (&tc->pacer, rate_bytes_per_sec);
+ pacer->last_update = time_now >> SPACER_CPU_TICKS_PER_PERIOD_SHIFT;
+ 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)
+{
+ f64 dispatch_period = transport_dispatch_period (tc->thread_index);
+ u32 burst_size = 1.1 * bytes_per_sec * dispatch_period;
+ spacer_set_pace_rate (&tc->pacer, bytes_per_sec);
+ spacer_update_max_burst_size (&tc->pacer, burst_size);
+}
+
+u32
+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;
+
+ 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);
+ 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;
+ }
+ return snd_space;
+}
+
+void
+transport_connection_update_tx_stats (transport_connection_t * tc, u32 bytes)
+{
+ tc->stats.tx_bytes += 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_init_tx_pacers_period (void)
+{
+ f64 cpu_freq = os_cpu_clock_frequency ();
+ transport_pacer_period = cpu_freq / SPACER_CPU_TICKS_PER_PERIOD;
}
void
Code Review / vpp.git / blobdiff