#define THZ (u32) (1/TCP_TICK) /**< TCP tick frequency */
#define TCP_TSTAMP_RESOLUTION TCP_TICK /**< Time stamp resolution */
#define TCP_PAWS_IDLE 24 * 24 * 60 * 60 * THZ /**< 24 days */
+#define TCP_FIB_RECHECK_PERIOD 1 * THZ /**< Recheck every 1s */
#define TCP_MAX_OPTION_SPACE 40
#define TCP_DUPACK_THRESHOLD 3
#define TCP_MAX_RX_FIFO_SIZE 4 << 20
+#define TCP_MIN_RX_FIFO_SIZE 4 << 10
#define TCP_IW_N_SEGMENTS 10
#define TCP_ALWAYS_ACK 1 /**< On/off delayed acks */
#define TCP_USE_SACKS 1 /**< Disable only for testing */
format_function_t format_tcp_state;
format_function_t format_tcp_flags;
format_function_t format_tcp_sacks;
+format_function_t format_tcp_rcv_sacks;
/** TCP timers */
#define foreach_tcp_timer \
* ticks to timer units */
#define TCP_DELACK_TIME 1 /* 0.1s */
#define TCP_ESTABLISH_TIME 750 /* 75s */
+#define TCP_SYN_RCVD_TIME 600 /* 60s */
#define TCP_2MSL_TIME 300 /* 30s */
-#define TCP_CLOSEWAIT_TIME 20 /* 0.1s */
-#define TCP_CLEANUP_TIME 5 /* 0.5s Time to wait before cleanup */
+#define TCP_CLOSEWAIT_TIME 20 /* 2s */
+#define TCP_TIMEWAIT_TIME 100 /* 10s */
+#define TCP_CLEANUP_TIME 10 /* 1s Time to wait before cleanup */
#define TCP_TIMER_PERSIST_MIN 2 /* 0.2s */
#define TCP_RTO_MAX 60 * THZ /* Min max RTO (60s) as per RFC6298 */
#define foreach_tcp_connection_flag \
_(SNDACK, "Send ACK") \
_(FINSNT, "FIN sent") \
- _(SENT_RCV_WND0, "Sent 0 receive window") \
- _(RECOVERY, "Recovery on") \
- _(FAST_RECOVERY, "Fast Recovery on") \
- _(FR_1_SMSS, "Sent 1 SMSS")
+ _(SENT_RCV_WND0, "Sent 0 rcv_wnd") \
+ _(RECOVERY, "Recovery") \
+ _(FAST_RECOVERY, "Fast Recovery") \
+ _(FR_1_SMSS, "Sent 1 SMSS") \
+ _(HALF_OPEN_DONE, "Half-open completed") \
+ _(FINPNDG, "FIN pending") \
typedef enum _tcp_connection_flag_bits
{
#undef _
};
+#define TCP_SCOREBOARD_TRACE (0)
#define TCP_MAX_SACK_BLOCKS 15 /**< Max number of SACK blocks stored */
#define TCP_INVALID_SACK_HOLE_INDEX ((u32)~0)
+typedef struct _scoreboard_trace_elt
+{
+ u32 start;
+ u32 end;
+ u32 ack;
+ u32 snd_una_max;
+ u32 group;
+} scoreboard_trace_elt_t;
+
typedef struct _sack_scoreboard_hole
{
u32 next; /**< Index for next entry in linked list */
u32 rescue_rxt; /**< Rescue sequence number */
u32 lost_bytes; /**< Bytes lost as per RFC6675 */
u32 cur_rxt_hole; /**< Retransmitting from this hole */
+
+#if TCP_SCOREBOARD_TRACE
+ scoreboard_trace_elt_t *trace;
+#endif
+
} sack_scoreboard_t;
+#if TCP_SCOREBOARD_TRACE
+#define tcp_scoreboard_trace_add(_tc, _ack) \
+{ \
+ static u64 _group = 0; \
+ sack_scoreboard_t *_sb = &_tc->sack_sb; \
+ sack_block_t *_sack, *_sacks; \
+ scoreboard_trace_elt_t *_elt; \
+ int i; \
+ _group++; \
+ _sacks = _tc->rcv_opts.sacks; \
+ for (i = 0; i < vec_len (_sacks); i++) \
+ { \
+ _sack = &_sacks[i]; \
+ vec_add2 (_sb->trace, _elt, 1); \
+ _elt->start = _sack->start; \
+ _elt->end = _sack->end; \
+ _elt->ack = _elt->end == _ack ? _ack : 0; \
+ _elt->snd_una_max = _elt->end == _ack ? _tc->snd_una_max : 0; \
+ _elt->group = _group; \
+ } \
+}
+#else
+#define tcp_scoreboard_trace_add(_tc, _ack)
+#endif
+
typedef enum _tcp_cc_algorithm_type
{
TCP_CC_NEWRENO,
/* Congestion control */
u32 cwnd; /**< Congestion window */
+ u32 cwnd_acc_bytes; /**< Bytes accumulated for cwnd increment */
u32 ssthresh; /**< Slow-start threshold */
u32 prev_ssthresh; /**< ssthresh before congestion */
u32 prev_cwnd; /**< ssthresh before congestion */
u16 mss; /**< Our max seg size that includes options */
u32 limited_transmit; /**< snd_nxt when limited transmit starts */
+ u32 last_fib_check; /**< Last time we checked fib route for peer */
+ u32 sw_if_index; /**< Interface for the connection */
} tcp_connection_t;
struct _tcp_cc_algorithm
u8 log2_tstamp_clocks_per_tick;
f64 tstamp_ticks_per_clock;
+ u32 *time_now;
/** per-worker tx buffer free lists */
u32 **tx_buffers;
+ /** per-worker tx frames to tcp 4/6 output nodes */
+ vlib_frame_t **tx_frames[2];
+ /** per-worker tx frames to ip 4/6 lookup nodes */
+ vlib_frame_t **ip_lookup_tx_frames[2];
/* Per worker-thread timer wheel for connections timers */
tw_timer_wheel_16t_2w_512sl_t *timer_wheels;
-// /* Convenience per worker-thread vector of connections to DELACK */
-// u32 **delack_connections;
-
/* Pool of half-open connections on which we've sent a SYN */
tcp_connection_t *half_open_connections;
-
- /* Pool of local TCP endpoints */
- transport_endpoint_t *local_endpoints;
-
- /* Local endpoints lookup table */
- transport_endpoint_table_t local_endpoints_table;
+ clib_spinlock_t half_open_lock;
/* Congestion control algorithms registered */
tcp_cc_algorithm_t *cc_algos;
/* Flag that indicates if stack is on or off */
u8 is_enabled;
- /* convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
- ip4_main_t *ip4_main;
- ip6_main_t *ip6_main;
+ /** Number of preallocated connections */
+ u32 preallocated_connections;
+ u32 preallocated_half_open_connections;
+
+ /** Vectors of src addresses. Optional unless one needs > 63K active-opens */
+ ip4_address_t *ip4_src_addresses;
+ u32 last_v4_address_rotor;
+ u32 last_v6_address_rotor;
+ ip6_address_t *ip6_src_addresses;
+
+ /** vlib buffer size */
+ u32 bytes_per_buffer;
+
+ u8 punt_unknown4;
+ u8 punt_unknown6;
+
+ /** fault-injection */
+ f64 buffer_fail_fraction;
} tcp_main_t;
extern tcp_main_t tcp_main;
+ vnet_buffer (b)->tcp.hdr_offset);
}
+#if (VLIB_BUFFER_TRACE_TRAJECTORY)
+#define tcp_trajectory_add_start(b, start) \
+{ \
+ (*vlib_buffer_trace_trajectory_cb) (b, start); \
+}
+#else
+#define tcp_trajectory_add_start(b, start)
+#endif
+
clib_error_t *vnet_tcp_enable_disable (vlib_main_t * vm, u8 is_en);
+void tcp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add);
+
always_inline tcp_connection_t *
tcp_connection_get (u32 conn_index, u32 thread_index)
{
- if (pool_is_free_index (tcp_main.connections[thread_index], conn_index))
+ if (PREDICT_FALSE
+ (pool_is_free_index (tcp_main.connections[thread_index], conn_index)))
return 0;
return pool_elt_at_index (tcp_main.connections[thread_index], conn_index);
}
return pool_elt_at_index (tcp_main.connections[thread_index], conn_index);
}
+always_inline tcp_connection_t *
+tcp_get_connection_from_transport (transport_connection_t * tconn)
+{
+ return (tcp_connection_t *) tconn;
+}
+
void tcp_connection_close (tcp_connection_t * tc);
void tcp_connection_cleanup (tcp_connection_t * tc);
void tcp_connection_del (tcp_connection_t * tc);
+int tcp_half_open_connection_cleanup (tcp_connection_t * tc);
+tcp_connection_t *tcp_connection_new (u8 thread_index);
void tcp_connection_reset (tcp_connection_t * tc);
-
+int tcp_configure_v4_source_address_range (vlib_main_t * vm,
+ ip4_address_t * start,
+ ip4_address_t * end, u32 table_id);
+int tcp_configure_v6_source_address_range (vlib_main_t * vm,
+ ip6_address_t * start,
+ ip6_address_t * end, u32 table_id);
+void tcp_api_reference (void);
u8 *format_tcp_connection_id (u8 * s, va_list * args);
u8 *format_tcp_connection (u8 * s, va_list * args);
u8 *format_tcp_scoreboard (u8 * s, va_list * args);
+u8 *tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose);
+
always_inline tcp_connection_t *
tcp_listener_get (u32 tli)
{
always_inline tcp_connection_t *
tcp_half_open_connection_get (u32 conn_index)
{
- return pool_elt_at_index (tcp_main.half_open_connections, conn_index);
+ tcp_connection_t *tc = 0;
+ clib_spinlock_lock_if_init (&tcp_main.half_open_lock);
+ if (!pool_is_free_index (tcp_main.half_open_connections, conn_index))
+ tc = pool_elt_at_index (tcp_main.half_open_connections, conn_index);
+ clib_spinlock_unlock_if_init (&tcp_main.half_open_lock);
+ return tc;
}
void tcp_make_ack (tcp_connection_t * ts, vlib_buffer_t * b);
void tcp_make_fin (tcp_connection_t * tc, vlib_buffer_t * b);
void tcp_make_synack (tcp_connection_t * ts, vlib_buffer_t * b);
-void tcp_send_reset (vlib_buffer_t * pkt, u8 is_ip4);
+void tcp_send_reset_w_pkt (tcp_connection_t * tc, vlib_buffer_t * pkt,
+ u8 is_ip4);
+void tcp_send_reset (tcp_connection_t * tc);
void tcp_send_syn (tcp_connection_t * tc);
void tcp_send_fin (tcp_connection_t * tc);
void tcp_init_mss (tcp_connection_t * tc);
void tcp_update_snd_mss (tcp_connection_t * tc);
void tcp_update_rto (tcp_connection_t * tc);
+void tcp_flush_frame_to_output (vlib_main_t * vm, u8 thread_index, u8 is_ip4);
+void tcp_flush_frames_to_output (u8 thread_index);
always_inline u32
tcp_end_seq (tcp_header_t * th, u32 len)
}
always_inline u32
-tcp_available_wnd (const tcp_connection_t * tc)
+tcp_available_snd_wnd (const tcp_connection_t * tc)
{
return clib_min (tc->cwnd, tc->snd_wnd);
}
always_inline u32
-tcp_available_snd_space (const tcp_connection_t * tc)
+tcp_available_output_snd_space (const tcp_connection_t * tc)
+{
+ u32 available_wnd = tcp_available_snd_wnd (tc);
+ int flight_size = (int) (tc->snd_nxt - tc->snd_una);
+
+ if (available_wnd <= flight_size)
+ return 0;
+
+ return available_wnd - flight_size;
+}
+
+/**
+ * Estimate of how many bytes we can still push into the network
+ */
+always_inline u32
+tcp_available_cc_snd_space (const tcp_connection_t * tc)
{
- u32 available_wnd = tcp_available_wnd (tc);
+ u32 available_wnd = tcp_available_snd_wnd (tc);
u32 flight_size = tcp_flight_size (tc);
if (available_wnd <= flight_size)
return available_wnd - flight_size;
}
+always_inline u8
+tcp_is_lost_fin (tcp_connection_t * tc)
+{
+ if ((tc->flags & TCP_CONN_FINSNT) && tc->snd_una_max - tc->snd_una == 1)
+ return 1;
+ return 0;
+}
+
i32 tcp_rcv_wnd_available (tcp_connection_t * tc);
u32 tcp_snd_space (tcp_connection_t * tc);
void tcp_update_rcv_wnd (tcp_connection_t * tc);
int tcp_cc_recover (tcp_connection_t * tc);
void tcp_cc_fastrecovery_exit (tcp_connection_t * tc);
+fib_node_index_t tcp_lookup_rmt_in_fib (tcp_connection_t * tc);
+
/* Made public for unit testing only */
void tcp_update_sack_list (tcp_connection_t * tc, u32 start, u32 end);
+u32 tcp_sack_list_bytes (tcp_connection_t * tc);
always_inline u32
tcp_time_now (void)
{
- return clib_cpu_time_now () * tcp_main.tstamp_ticks_per_clock;
+ return tcp_main.time_now[vlib_get_thread_index ()];
}
-always_inline void
-tcp_update_time (f64 now, u32 thread_index)
+always_inline u32
+tcp_set_time_now (u32 thread_index)
{
- tw_timer_expire_timers_16t_2w_512sl (&tcp_main.timer_wheels[thread_index],
- now);
+ tcp_main.time_now[thread_index] = clib_cpu_time_now ()
+ * tcp_main.tstamp_ticks_per_clock;
+ return tcp_main.time_now[thread_index];
}
-u32 tcp_push_header (transport_connection_t * tconn, vlib_buffer_t * b);
+u32 tcp_session_push_header (transport_connection_t * tconn,
+ vlib_buffer_t * b);
u32
-tcp_prepare_retransmit_segment (tcp_connection_t * tc, vlib_buffer_t * b,
- u32 offset, u32 max_bytes);
+tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
+ u32 max_bytes, vlib_buffer_t ** b);
void tcp_connection_timers_init (tcp_connection_t * tc);
void tcp_connection_timers_reset (tcp_connection_t * tc);
+void tcp_init_snd_vars (tcp_connection_t * tc);
void tcp_connection_init_vars (tcp_connection_t * tc);
always_inline void
always_inline void
tcp_timer_set (tcp_connection_t * tc, u8 timer_id, u32 interval)
{
+ ASSERT (tc->c_thread_index == vlib_get_thread_index ());
+ ASSERT (tc->timers[timer_id] == TCP_TIMER_HANDLE_INVALID);
tc->timers[timer_id]
= tw_timer_start_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
tc->c_c_index, timer_id, interval);
always_inline void
tcp_timer_reset (tcp_connection_t * tc, u8 timer_id)
{
+ ASSERT (tc->c_thread_index == vlib_get_thread_index ());
if (tc->timers[timer_id] == TCP_TIMER_HANDLE_INVALID)
return;
always_inline void
tcp_timer_update (tcp_connection_t * tc, u8 timer_id, u32 interval)
{
+ ASSERT (tc->c_thread_index == vlib_get_thread_index ());
if (tc->timers[timer_id] != TCP_TIMER_HANDLE_INVALID)
tw_timer_stop_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
tc->timers[timer_id]);
tc->c_c_index, timer_id, interval);
}
-/* XXX Switch retransmit to faster TW */
always_inline void
tcp_retransmit_timer_set (tcp_connection_t * tc)
{
+ ASSERT (tc->snd_una != tc->snd_una_max);
tcp_timer_set (tc, TCP_TIMER_RETRANSMIT,
clib_max (tc->rto * TCP_TO_TIMER_TICK, 1));
}
{
tcp_retransmit_timer_reset (tc);
if (tc->snd_wnd < tc->snd_mss)
- tcp_persist_timer_set (tc);
+ tcp_persist_timer_update (tc);
}
else
tcp_timer_update (tc, TCP_TIMER_RETRANSMIT,
#define tcp_validate_txf_size(_tc, _a) \
ASSERT(_tc->state != TCP_STATE_ESTABLISHED \
- || stream_session_tx_fifo_max_dequeue (&_tc->connection) >= _a)
+ || session_tx_fifo_max_dequeue (&_tc->connection) >= _a)
void
scoreboard_remove_hole (sack_scoreboard_t * sb,
sack_scoreboard_hole_t * hole);
-void scoreboard_update_lost (tcp_connection_t * tc, sack_scoreboard_t * sb);
sack_scoreboard_hole_t *scoreboard_insert_hole (sack_scoreboard_t * sb,
u32 prev_index, u32 start,
u32 end);
start, u8 have_sent_1_smss,
u8 * can_rescue,
u8 * snd_limited);
-void scoreboard_init_high_rxt (sack_scoreboard_t * sb);
+void scoreboard_init_high_rxt (sack_scoreboard_t * sb, u32 seq);
always_inline sack_scoreboard_hole_t *
scoreboard_get_hole (sack_scoreboard_t * sb, u32 index)
scoreboard_remove_hole (sb, hole);
}
ASSERT (sb->head == sb->tail && sb->head == TCP_INVALID_SACK_HOLE_INDEX);
+ ASSERT (pool_elts (sb->holes) == 0);
sb->sacked_bytes = 0;
sb->last_sacked_bytes = 0;
sb->last_bytes_delivered = 0;
always_inline u32
scoreboard_hole_index (sack_scoreboard_t * sb, sack_scoreboard_hole_t * hole)
{
+ ASSERT (!pool_is_free_index (sb->holes, hole - sb->holes));
return hole - sb->holes;
}
Code Review / vpp.git / blobdiff