X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ftcp%2Ftcp.h;h=2327b9a6ad5b26e0500dc17e25ec37104f289b72;hb=refs%2Fchanges%2F37%2F16537%2F5;hp=1fd03c9e7ba0b2d900adf386277d03c68dd8c5c6;hpb=adb5bd5344cd7b422c0c08e6434ad8642b897502;p=vpp.git diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index 1fd03c9e7ba..2327b9a6ad5 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -30,9 +30,10 @@ #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_CC_DATA_SZ 24 #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 */ @@ -101,7 +102,8 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler; #define TCP_2MSL_TIME 300 /* 30s */ #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_FINWAIT1_TIME 600 /* 60s */ +#define TCP_CLEANUP_TIME 1 /* 0.1s */ #define TCP_TIMER_PERSIST_MIN 2 /* 0.2s */ #define TCP_RTO_MAX 60 * THZ /* Min max RTO (60s) as per RFC6298 */ @@ -117,9 +119,13 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler; _(SENT_RCV_WND0, "Sent 0 rcv_wnd") \ _(RECOVERY, "Recovery") \ _(FAST_RECOVERY, "Fast Recovery") \ - _(FR_1_SMSS, "Sent 1 SMSS") \ + _(DCNT_PENDING, "Disconnect pending") \ _(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") \ + _(PSH_PENDING, "PSH pending") \ typedef enum _tcp_connection_flag_bits { @@ -158,7 +164,7 @@ enum }; #define TCP_SCOREBOARD_TRACE (0) -#define TCP_MAX_SACK_BLOCKS 15 /**< Max number of SACK blocks stored */ +#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 @@ -225,9 +231,28 @@ typedef struct _sack_scoreboard #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, + TCP_CC_CUBIC, } tcp_cc_algorithm_type_e; typedef struct _tcp_cc_algorithm tcp_cc_algorithm_t; @@ -241,6 +266,7 @@ typedef enum _tcp_cc_ack_t typedef struct _tcp_connection { + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); transport_connection_t connection; /**< Common transport data. First! */ u8 state; /**< TCP state as per tcp_state_t */ @@ -267,19 +293,19 @@ typedef struct _tcp_connection 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 */ @@ -288,34 +314,44 @@ typedef struct _tcp_connection 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 snd_congestion; /**< snd_una_max when congestion is detected */ tcp_cc_algorithm_t *cc_algo; /**< Congestion control algorithm */ + u8 cc_data[TCP_CC_DATA_SZ]; /**< Congestion control algo private data */ /* RTT and RTO */ u32 rto; /**< Retransmission timeout */ 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 */ + u32 tx_fifo_size; /**< Tx fifo size. Used to constrain cwnd */ + + u32 psh_seq; /**< Add psh header for seg that includes this */ } tcp_connection_t; +/* *INDENT-OFF* */ struct _tcp_cc_algorithm { + const char *name; + uword (*unformat_cfg) (unformat_input_t * input); void (*rcv_ack) (tcp_connection_t * tc); void (*rcv_cong_ack) (tcp_connection_t * tc, tcp_cc_ack_t ack); void (*congestion) (tcp_connection_t * tc); void (*recovered) (tcp_connection_t * tc); void (*init) (tcp_connection_t * tc); }; +/* *INDENT-ON* */ #define tcp_fastrecovery_on(tc) (tc)->flags |= TCP_CONN_FAST_RECOVERY #define tcp_fastrecovery_off(tc) (tc)->flags &= ~TCP_CONN_FAST_RECOVERY @@ -324,9 +360,12 @@ struct _tcp_cc_algorithm #define tcp_in_fastrecovery(tc) ((tc)->flags & TCP_CONN_FAST_RECOVERY) #define tcp_in_recovery(tc) ((tc)->flags & (TCP_CONN_RECOVERY)) #define tcp_in_slowstart(tc) (tc->cwnd < tc->ssthresh) -#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_disconnect_pending(tc) ((tc)->flags & TCP_CONN_DCNT_PENDING) +#define tcp_disconnect_pending_on(tc) ((tc)->flags |= TCP_CONN_DCNT_PENDING) +#define tcp_disconnect_pending_off(tc) ((tc)->flags &= ~TCP_CONN_DCNT_PENDING) +#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)) @@ -335,16 +374,9 @@ always_inline void tcp_cong_recovery_off (tcp_connection_t * tc) { 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, @@ -361,13 +393,47 @@ typedef struct _tcp_lookup_dispatch 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 */ + /** worker time */ + u32 time_now; + + /** worker timer wheel */ + tw_timer_wheel_16t_2w_512sl_t timer_wheel; + + /** tx buffer free list */ + u32 *tx_buffers; + + /** tx frames for tcp 4/6 output nodes */ + vlib_frame_t *tx_frames[2]; + + /** tx frames for ip 4/6 lookup nodes */ + vlib_frame_t *ip_lookup_tx_frames[2]; + + /** vector of connections needing fast rxt */ + u32 *pending_fast_rxt; + + /** vector of connections now doing fast rxt */ + u32 *ongoing_fast_rxt; + + /** vector of connections that will do fast rxt */ + u32 *postponed_fast_rxt; + + /** vector of pending ack dequeues */ + u32 *pending_deq_acked; + + /** vector of pending acks */ + u32 *pending_acks; + + /** vector of pending disconnect notifications */ + u32 *pending_disconnects; + + /** convenience pointer to this thread's vlib main */ + vlib_main_t *vm; + + CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); + + /** cached 'on the wire' options for bursts */ + u8 cached_opts[40]; + } tcp_worker_ctx_t; typedef struct _tcp_main @@ -394,9 +460,20 @@ typedef struct _tcp_main /* 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; + /** 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; @@ -407,14 +484,18 @@ typedef struct _tcp_main u32 last_v6_address_rotor; ip6_address_t *ip6_src_addresses; - /** vlib buffer size */ - u32 bytes_per_buffer; + /** Enable tx pacing for new connections */ + u8 tx_pacing; u8 punt_unknown4; u8 punt_unknown6; /** fault-injection */ f64 buffer_fail_fraction; + + /** Default congestion control algorithm type */ + tcp_cc_algorithm_type_e cc_algo; + } tcp_main_t; extern tcp_main_t tcp_main; @@ -429,6 +510,12 @@ vnet_get_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) { @@ -479,7 +566,8 @@ 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); +tcp_connection_t *tcp_connection_alloc (u8 thread_index); +void tcp_connection_free (tcp_connection_t * tc); void tcp_connection_reset (tcp_connection_t * tc); int tcp_configure_v4_source_address_range (vlib_main_t * vm, ip4_address_t * start, @@ -488,11 +576,7 @@ 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) @@ -518,12 +602,20 @@ 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 (vlib_main_t * vm, u8 thread_index, u8 is_ip4); -void tcp_flush_frames_to_output (u8 thread_index); +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) @@ -593,6 +685,25 @@ tcp_initial_cwnd (const tcp_connection_t * tc) return 4 * tc->snd_mss; } +/* + * Accumulate acked bytes for cwnd increase + * + * Once threshold bytes are accumulated, snd_mss bytes are added + * to the cwnd. + */ +always_inline void +tcp_cwnd_accumulate (tcp_connection_t * tc, u32 thresh, u32 bytes) +{ + tc->cwnd_acc_bytes += bytes; + if (tc->cwnd_acc_bytes >= thresh) + { + u32 inc = tc->cwnd_acc_bytes / thresh; + tc->cwnd_acc_bytes -= inc * thresh; + tc->cwnd += inc * tc->snd_mss; + tc->cwnd = clib_min (tc->cwnd, tc->tx_fifo_size); + } +} + always_inline u32 tcp_loss_wnd (const tcp_connection_t * tc) { @@ -640,16 +751,16 @@ tcp_is_lost_fin (tcp_connection_t * tc) 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); - -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); +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); @@ -665,31 +776,39 @@ tcp_time_now (void) } always_inline u32 -tcp_set_time_now (u32 thread_index) +tcp_time_now_w_thread (u32 thread_index) { - tcp_main.wrk_ctx[thread_index].time_now = clib_cpu_time_now () - * tcp_main.tstamp_ticks_per_clock; return tcp_main.wrk_ctx[thread_index].time_now; } -u32 tcp_session_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); +} -u32 -tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset, - u32 max_bytes, vlib_buffer_t ** b); +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_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; } always_inline void @@ -799,120 +918,21 @@ tcp_timer_is_active (tcp_connection_t * tc, tcp_timers_e timer) ASSERT(_tc->state != TCP_STATE_ESTABLISHED \ || session_tx_fifo_max_dequeue (&_tc->connection) >= _a) -void -scoreboard_remove_hole (sack_scoreboard_t * sb, - sack_scoreboard_hole_t * hole); -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, u32 seq); - -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); - ASSERT (pool_elts (sb->holes) == 0); - 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) -{ - ASSERT (!pool_is_free_index (sb->holes, hole - sb->holes)); - 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; -} - 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); +void tcp_cc_algo_register (tcp_cc_algorithm_type_e type, + const tcp_cc_algorithm_t * vft); - tm->cc_algos[type] = *vft; -} +tcp_cc_algorithm_t *tcp_cc_algo_get (tcp_cc_algorithm_type_e type); -always_inline tcp_cc_algorithm_t * -tcp_cc_algo_get (tcp_cc_algorithm_type_e type) +static inline void * +tcp_cc_data (tcp_connection_t * tc) { - tcp_main_t *tm = vnet_get_tcp_main (); - return &tm->cc_algos[type]; + return (void *) tc->cc_data; } -void tcp_cc_init (tcp_connection_t * tc); +void newreno_rcv_cong_ack (tcp_connection_t * tc, tcp_cc_ack_t ack_type); /** * Push TCP header to buffer