#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_MAX_RX_FIFO_SIZE 32 << 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") \
+ _(FRXT_PENDING, "Fast-retransmit pending") \
+ _(FRXT_FIRST, "Fast-retransmit first again") \
+ _(DEQ_PENDING, "Pending dequeue acked") \
typedef enum _tcp_connection_flag_bits
{
#undef _
};
-#define TCP_MAX_SACK_BLOCKS 15 /**< Max number of SACK blocks stored */
+#define TCP_SCOREBOARD_TRACE (0)
+#define TCP_MAX_SACK_BLOCKS 256 /**< 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
+
+sack_scoreboard_hole_t *scoreboard_next_rxt_hole (sack_scoreboard_t * sb,
+ sack_scoreboard_hole_t *
+ start, u8 have_sent_1_smss,
+ u8 * can_rescue,
+ u8 * snd_limited);
+sack_scoreboard_hole_t *scoreboard_get_hole (sack_scoreboard_t * sb,
+ u32 index);
+
+sack_scoreboard_hole_t *scoreboard_next_hole (sack_scoreboard_t * sb,
+ sack_scoreboard_hole_t * hole);
+sack_scoreboard_hole_t *scoreboard_prev_hole (sack_scoreboard_t * sb,
+ sack_scoreboard_hole_t * hole);
+sack_scoreboard_hole_t *scoreboard_first_hole (sack_scoreboard_t * sb);
+sack_scoreboard_hole_t *scoreboard_last_hole (sack_scoreboard_t * sb);
+void scoreboard_clear (sack_scoreboard_t * sb);
+void scoreboard_init (sack_scoreboard_t * sb);
+u8 *format_tcp_scoreboard (u8 * s, va_list * args);
+
typedef enum _tcp_cc_algorithm_type
{
TCP_CC_NEWRENO,
u32 irs; /**< initial remote sequence */
/* Options */
- tcp_options_t rcv_opts; /**< Rx options for connection */
- tcp_options_t snd_opts; /**< Tx options for connection */
u8 snd_opts_len; /**< Tx options len */
- u8 rcv_wscale; /**< Window scale to advertise to peer */
- u8 snd_wscale; /**< Window scale to use when sending */
- u32 tsval_recent; /**< Last timestamp received */
- u32 tsval_recent_age; /**< When last updated tstamp_recent*/
+ u8 rcv_wscale; /**< Window scale to advertise to peer */
+ u8 snd_wscale; /**< Window scale to use when sending */
+ u32 tsval_recent; /**< Last timestamp received */
+ u32 tsval_recent_age; /**< When last updated tstamp_recent*/
+ tcp_options_t snd_opts; /**< Tx options for connection */
+ tcp_options_t rcv_opts; /**< Rx options for connection */
sack_block_t *snd_sacks; /**< Vector of SACKs to send. XXX Fixed size? */
sack_scoreboard_t sack_sb; /**< SACK "scoreboard" that tracks holes */
u16 rcv_dupacks; /**< Number of DUPACKs received */
- u8 snt_dupacks; /**< Number of DUPACKs sent in a burst */
+ u8 pending_dupacks; /**< Number of DUPACKs to be sent */
/* 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 */
u32 bytes_acked; /**< Bytes acknowledged by current segment */
+ u32 burst_acked; /**< Bytes acknowledged in current burst */
u32 snd_rxt_bytes; /**< Retransmitted bytes */
u32 snd_rxt_ts; /**< Timestamp when first packet is retransmitted */
u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */
u32 rto_boff; /**< Index for RTO backoff */
u32 srtt; /**< Smoothed RTT */
u32 rttvar; /**< Smoothed mean RTT difference. Approximates variance */
- u32 rtt_ts; /**< Timestamp for tracked ACK */
u32 rtt_seq; /**< Sequence number for tracked ACK */
+ f64 rtt_ts; /**< Timestamp for tracked ACK */
+ f64 mrtt_us; /**< High precision mrtt from tracked acks */
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
#define tcp_fastrecovery_sent_1_smss(tc) ((tc)->flags & TCP_CONN_FR_1_SMSS)
#define tcp_fastrecovery_1_smss_on(tc) ((tc)->flags |= TCP_CONN_FR_1_SMSS)
#define tcp_fastrecovery_1_smss_off(tc) ((tc)->flags &= ~TCP_CONN_FR_1_SMSS)
+#define tcp_fastrecovery_first(tc) ((tc)->flags & TCP_CONN_FRXT_FIRST)
+#define tcp_fastrecovery_first_on(tc) ((tc)->flags |= TCP_CONN_FRXT_FIRST)
+#define tcp_fastrecovery_first_off(tc) ((tc)->flags &= ~TCP_CONN_FRXT_FIRST)
#define tcp_in_cong_recovery(tc) ((tc)->flags & \
(TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY))
{
tc->flags &= ~(TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY);
tcp_fastrecovery_1_smss_off (tc);
+ tcp_fastrecovery_first_off (tc);
}
-typedef enum
-{
- TCP_IP4,
- TCP_IP6,
- TCP_N_AF,
-} tcp_af_t;
-
typedef enum _tcp_error
{
#define tcp_error(n,s) TCP_ERROR_##n,
u8 next, error;
} tcp_lookup_dispatch_t;
+typedef struct tcp_worker_ctx_
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ u32 time_now; /**< worker time */
+ tw_timer_wheel_16t_2w_512sl_t timer_wheel; /**< worker timer wheel */
+ u32 *tx_buffers; /**< tx buffer free list */
+ vlib_frame_t *tx_frames[2]; /**< tx frames for tcp 4/6
+ output nodes */
+ vlib_frame_t *ip_lookup_tx_frames[2]; /**< tx frames for ip 4/6
+ lookup nodes */
+ u32 *pending_fast_rxt; /**< vector of connections
+ needing fast rxt */
+ u32 *ongoing_fast_rxt; /**< vector of connections
+ now doing fast rxt */
+ u32 *postponed_fast_rxt; /**< vector of connections
+ that will do fast rxt */
+ u32 *pending_deq_acked;
+ u32 *pending_acks;
+ vlib_main_t *vm; /**< pointer to vm */
+
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
+ u8 cached_opts[40]; /**< cached 'on the wire'
+ options for bursts */
+
+} tcp_worker_ctx_t;
+
typedef struct _tcp_main
{
/* Per-worker thread tcp connection pools */
u8 log2_tstamp_clocks_per_tick;
f64 tstamp_ticks_per_clock;
- /** per-worker tx buffer free lists */
- u32 **tx_buffers;
-
- /* 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;
+ /** per-worker context */
+ tcp_worker_ctx_t *wrk_ctx;
/* 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;
+ /** vlib buffer size */
+ u32 bytes_per_buffer;
+
+ /*
+ * Configuration
+ */
+
/* 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;
+ /** Max rx fifo size for a session. It is used in to compute the
+ * rfc 7323 window scaling factor */
+ u32 max_rx_fifo;
+
+ /** 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;
+
+ /** Enable tx pacing for new connections */
+ u8 tx_pacing;
+
+ u8 punt_unknown4;
+ u8 punt_unknown6;
+
+ /** fault-injection */
+ f64 buffer_fail_fraction;
} tcp_main_t;
extern tcp_main_t tcp_main;
return &tcp_main;
}
+always_inline tcp_worker_ctx_t *
+tcp_get_worker (u32 thread_index)
+{
+ return &tcp_main.wrk_ctx[thread_index];
+}
+
always_inline tcp_header_t *
tcp_buffer_hdr (vlib_buffer_t * b)
{
+ 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);
-
-u8 *format_tcp_connection_id (u8 * s, va_list * args);
+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 (u8 * s, va_list * args);
-u8 *format_tcp_scoreboard (u8 * s, va_list * args);
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_synack (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_burst_snd_vars (tcp_connection_t * tc);
void tcp_update_rto (tcp_connection_t * tc);
+void tcp_flush_frame_to_output (tcp_worker_ctx_t * wrk, u8 is_ip4);
+void tcp_flush_frames_to_output (tcp_worker_ctx_t * wrk);
+void tcp_program_fastretransmit (tcp_worker_ctx_t * wrk,
+ tcp_connection_t * tc);
+void tcp_do_fastretransmits (tcp_worker_ctx_t * wrk);
+
+void tcp_program_ack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc);
+void tcp_program_dupack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc);
+void tcp_send_acks (tcp_worker_ctx_t * wrk);
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;
}
-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);
+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;
+}
-void tcp_retransmit_first_unacked (tcp_connection_t * tc);
-void tcp_fast_retransmit_no_sack (tcp_connection_t * tc);
-void tcp_fast_retransmit_sack (tcp_connection_t * tc);
-void tcp_fast_retransmit (tcp_connection_t * tc);
+u32 tcp_snd_space (tcp_connection_t * tc);
+int tcp_retransmit_first_unacked (tcp_worker_ctx_t * wrk,
+ tcp_connection_t * tc);
+int tcp_fast_retransmit_no_sack (tcp_worker_ctx_t * wrk,
+ tcp_connection_t * tc, u32 burst_size);
+int tcp_fast_retransmit_sack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc,
+ u32 burst_size);
+int tcp_fast_retransmit (tcp_worker_ctx_t * wrk, tcp_connection_t * tc,
+ u32 burst_size);
void tcp_cc_init_congestion (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.wrk_ctx[vlib_get_thread_index ()].time_now;
}
-always_inline void
-tcp_update_time (f64 now, u32 thread_index)
+always_inline u32
+tcp_time_now_w_thread (u32 thread_index)
{
- tw_timer_expire_timers_16t_2w_512sl (&tcp_main.timer_wheels[thread_index],
- now);
+ return tcp_main.wrk_ctx[thread_index].time_now;
}
-u32 tcp_push_header (transport_connection_t * tconn, vlib_buffer_t * b);
+always_inline f64
+tcp_time_now_us (u32 thread_index)
+{
+ return transport_time_now (thread_index);
+}
+
+always_inline u32
+tcp_set_time_now (tcp_worker_ctx_t * wrk)
+{
+ wrk->time_now = clib_cpu_time_now () * tcp_main.tstamp_ticks_per_clock;
+ return wrk->time_now;
+}
-u32
-tcp_prepare_retransmit_segment (tcp_connection_t * tc, vlib_buffer_t * b,
- u32 offset, u32 max_bytes);
+u32 tcp_push_header (tcp_connection_t * tconn, 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);
+void tcp_connection_tx_pacer_update (tcp_connection_t * tc);
+void tcp_connection_tx_pacer_reset (tcp_connection_t * tc, u32 window,
+ u32 start_bucket);
always_inline void
-tcp_connection_force_ack (tcp_connection_t * tc, vlib_buffer_t * b)
+tcp_cc_rcv_ack (tcp_connection_t * tc)
{
- /* Reset flags, make sure ack is sent */
- tc->flags = TCP_CONN_SNDACK;
- vnet_buffer (b)->tcp.flags &= ~TCP_BUF_FLAG_DUPACK;
+ tc->cc_algo->rcv_ack (tc);
+ tc->tsecr_last_ack = tc->rcv_opts.tsecr;
+ tcp_connection_tx_pacer_update (tc);
}
always_inline void
tcp_timer_set (tcp_connection_t * tc, u8 timer_id, u32 interval)
{
- 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);
+ 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.
+ wrk_ctx[tc->c_thread_index].timer_wheel,
+ 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;
- tw_timer_stop_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
+ tw_timer_stop_16t_2w_512sl (&tcp_main.
+ wrk_ctx[tc->c_thread_index].timer_wheel,
tc->timers[timer_id]);
tc->timers[timer_id] = TCP_TIMER_HANDLE_INVALID;
}
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->timers[timer_id] =
- tw_timer_start_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
- tc->c_c_index, timer_id, interval);
+ tw_timer_update_16t_2w_512sl (&tcp_main.
+ wrk_ctx[tc->c_thread_index].timer_wheel,
+ tc->timers[timer_id], interval);
+ else
+ tc->timers[timer_id] =
+ tw_timer_start_16t_2w_512sl (&tcp_main.
+ wrk_ctx[tc->c_thread_index].timer_wheel,
+ 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)
-
-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);
-sack_scoreboard_hole_t *scoreboard_next_rxt_hole (sack_scoreboard_t * sb,
- sack_scoreboard_hole_t *
- start, u8 have_sent_1_smss,
- u8 * can_rescue,
- u8 * snd_limited);
-void scoreboard_init_high_rxt (sack_scoreboard_t * sb);
-
-always_inline sack_scoreboard_hole_t *
-scoreboard_get_hole (sack_scoreboard_t * sb, u32 index)
-{
- if (index != TCP_INVALID_SACK_HOLE_INDEX)
- return pool_elt_at_index (sb->holes, index);
- return 0;
-}
-
-always_inline sack_scoreboard_hole_t *
-scoreboard_next_hole (sack_scoreboard_t * sb, sack_scoreboard_hole_t * hole)
-{
- if (hole->next != TCP_INVALID_SACK_HOLE_INDEX)
- return pool_elt_at_index (sb->holes, hole->next);
- return 0;
-}
-
-always_inline sack_scoreboard_hole_t *
-scoreboard_prev_hole (sack_scoreboard_t * sb, sack_scoreboard_hole_t * hole)
-{
- if (hole->prev != TCP_INVALID_SACK_HOLE_INDEX)
- return pool_elt_at_index (sb->holes, hole->prev);
- return 0;
-}
-
-always_inline sack_scoreboard_hole_t *
-scoreboard_first_hole (sack_scoreboard_t * sb)
-{
- if (sb->head != TCP_INVALID_SACK_HOLE_INDEX)
- return pool_elt_at_index (sb->holes, sb->head);
- return 0;
-}
-
-always_inline sack_scoreboard_hole_t *
-scoreboard_last_hole (sack_scoreboard_t * sb)
-{
- if (sb->tail != TCP_INVALID_SACK_HOLE_INDEX)
- return pool_elt_at_index (sb->holes, sb->tail);
- return 0;
-}
-
-always_inline void
-scoreboard_clear (sack_scoreboard_t * sb)
-{
- sack_scoreboard_hole_t *hole;
- while ((hole = scoreboard_first_hole (sb)))
- {
- scoreboard_remove_hole (sb, hole);
- }
- ASSERT (sb->head == sb->tail && sb->head == TCP_INVALID_SACK_HOLE_INDEX);
- sb->sacked_bytes = 0;
- sb->last_sacked_bytes = 0;
- sb->last_bytes_delivered = 0;
- sb->snd_una_adv = 0;
- sb->high_sacked = 0;
- sb->high_rxt = 0;
- sb->lost_bytes = 0;
- sb->cur_rxt_hole = TCP_INVALID_SACK_HOLE_INDEX;
-}
-
-always_inline u32
-scoreboard_hole_bytes (sack_scoreboard_hole_t * hole)
-{
- return hole->end - hole->start;
-}
-
-always_inline u32
-scoreboard_hole_index (sack_scoreboard_t * sb, sack_scoreboard_hole_t * hole)
-{
- return hole - sb->holes;
-}
-
-always_inline void
-scoreboard_init (sack_scoreboard_t * sb)
-{
- sb->head = TCP_INVALID_SACK_HOLE_INDEX;
- sb->tail = TCP_INVALID_SACK_HOLE_INDEX;
- sb->cur_rxt_hole = TCP_INVALID_SACK_HOLE_INDEX;
-}
+ || session_tx_fifo_max_dequeue (&_tc->connection) >= _a)
void tcp_rcv_sacks (tcp_connection_t * tc, u32 ack);
+u8 *tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose);
-always_inline void
-tcp_cc_algo_register (tcp_cc_algorithm_type_e type,
- const tcp_cc_algorithm_t * vft)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- vec_validate (tm->cc_algos, type);
-
- tm->cc_algos[type] = *vft;
-}
-
-always_inline tcp_cc_algorithm_t *
-tcp_cc_algo_get (tcp_cc_algorithm_type_e type)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- return &tm->cc_algos[type];
-}
+void tcp_cc_algo_register (tcp_cc_algorithm_type_e type,
+ const tcp_cc_algorithm_t * vft);
-void tcp_cc_init (tcp_connection_t * tc);
+tcp_cc_algorithm_t *tcp_cc_algo_get (tcp_cc_algorithm_type_e type);
/**
* Push TCP header to buffer
Code Review / vpp.git / blobdiff