*/
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
+
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].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
return -1;
}
- memset (lcl_addr, 0, sizeof (*lcl_addr));
+ clib_memset (lcl_addr, 0, sizeof (*lcl_addr));
if (rmt->is_ip4)
{
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;
+
+ pacer->last_update = norm_time_now;
+ pacer->bucket += n_periods * pacer->tokens_per_period;
+ 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_MSS);
+}
+
+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_init (transport_connection_t * tc,
+ u32 rate_bytes_per_sec, u32 burst_bytes)
+{
+ 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;
+}
+
+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)
+{
+ 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;
+ }
+ 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_init_tx_pacers_period (void)
+{
+ f64 cpu_freq = os_cpu_clock_frequency ();
+ transport_pacer_period = cpu_freq / SPACER_CPU_TICKS_PER_PERIOD;
+}
+
void
transport_update_time (f64 time_now, u8 thread_index)
{
Code Review / vpp.git / blobdiff