#define TRANSPORT_PACER_MIN_MSS 1460
#define TRANSPORT_PACER_MIN_BURST TRANSPORT_PACER_MIN_MSS
#define TRANSPORT_PACER_MAX_BURST (43 * TRANSPORT_PACER_MIN_MSS)
+#define TRANSPORT_PACER_MIN_IDLE 100
+#define TRANSPORT_PACER_IDLE_FACTOR 0.05
typedef struct _transport_options_t
{
u8 half_open_has_fifos;
} transport_options_t;
+typedef enum transport_snd_flags_
+{
+ TRANSPORT_SND_F_DESCHED = 1 << 0,
+ TRANSPORT_SND_F_POSTPONE = 1 << 1,
+ TRANSPORT_SND_N_FLAGS
+} __clib_packed transport_snd_flags_t;
+
+typedef struct transport_send_params_
+{
+ u32 snd_space;
+ u32 tx_offset;
+ u16 snd_mss;
+ transport_snd_flags_t flags;
+} transport_send_params_t;
+
/*
* Transport protocol virtual function table
*/
*/
u32 (*push_header) (transport_connection_t * tconn, vlib_buffer_t * b);
- u16 (*send_mss) (transport_connection_t * tc);
- u32 (*send_space) (transport_connection_t * tc);
- u32 (*tx_fifo_offset) (transport_connection_t * tc);
+ int (*send_params) (transport_connection_t * tconn,
+ transport_send_params_t *sp);
void (*update_time) (f64 time_now, u8 thread_index);
void (*flush_data) (transport_connection_t *tconn);
int (*custom_tx) (void *session, u32 max_burst_size);
return tp_vfts[tp].app_rx_evt (tc);
}
+/**
+ * Get send parameters for transport connection
+ *
+ * These include maximum tx burst, mss, tx offset and other flags
+ * transport might want to provide to sessin layer
+ *
+ * @param tc transport connection
+ * @param sp send paramaters
+ *
+ */
+static inline u32
+transport_connection_snd_params (transport_connection_t * tc,
+ transport_send_params_t * sp)
+{
+ return tp_vfts[tc->proto].send_params (tc, sp);
+}
+
+static inline u8
+transport_connection_is_descheduled (transport_connection_t * tc)
+{
+ return ((tc->flags & TRANSPORT_CONNECTION_F_DESCHED) ? 1 : 0);
+}
+
+static inline void
+transport_connection_deschedule (transport_connection_t * tc)
+{
+ tc->flags |= TRANSPORT_CONNECTION_F_DESCHED;
+}
+
+void transport_connection_reschedule (transport_connection_t * tc);
+
void transport_register_protocol (transport_proto_t transport_proto,
const transport_proto_vft_t * vft,
fib_protocol_t fib_proto, u32 output_node);
void transport_connection_tx_pacer_reset (transport_connection_t * tc,
u64 rate_bytes_per_sec,
- u32 initial_bucket);
+ u32 initial_bucket,
+ clib_us_time_t rtt);
/**
* Initialize tx pacer for connection
*
*
* @param tc transport connection
* @param bytes_per_sec new pacing rate
+ * @param rtt connection rtt that is used to compute
+ * inactivity time after which pacer bucket is
+ * reset to 1 mtu
*/
void transport_connection_tx_pacer_update (transport_connection_t * tc,
- u64 bytes_per_sec);
-
-/**
- * Get maximum tx burst allowed for transport connection
- *
- * @param tc transport connection
- * @param time_now current cpu time as returned by @ref clib_cpu_time_now
- * @param mss transport's mss
- */
-u32 transport_connection_snd_space (transport_connection_t * tc, u16 mss);
+ u64 bytes_per_sec,
+ clib_us_time_t rtt);
/**
* Get tx pacer max burst
* Reset tx pacer bucket
*
* @param tc transport connection
- * @param time_now current cpu time
+ * @param bucket value the bucket will be reset to
*/
-void transport_connection_tx_pacer_reset_bucket (transport_connection_t * tc);
+void transport_connection_tx_pacer_reset_bucket (transport_connection_t * tc,
+ u32 bucket);
/**
* Check if transport connection is paced