TCP_N_TIMERS
} tcp_timers_e;
-typedef void (timer_expiration_handler) (u32 index);
+typedef void (timer_expiration_handler) (u32 index, u32 thread_index);
extern timer_expiration_handler tcp_timer_delack_handler;
extern timer_expiration_handler tcp_timer_retransmit_handler;
_(DEQ_PENDING, "Dequeue pending ") \
_(PSH_PENDING, "PSH pending") \
_(FINRCVD, "FIN received") \
- _(TRACK_BURST, "Track burst") \
_(ZERO_RWND_SENT, "Zero RWND sent") \
typedef enum tcp_connection_flag_bits_
{
TCP_BTS_IS_RXT = 1,
TCP_BTS_IS_APP_LIMITED = 1 << 1,
+ TCP_BTS_IS_SACKED = 1 << 2,
+ TCP_BTS_IS_RXT_LOST = 1 << 3,
} __clib_packed tcp_bts_flags_t;
typedef struct tcp_bt_sample_
u32 prr_start; /**< snd_una when prr starts */
u32 rxt_delivered; /**< Rxt bytes delivered during current cc event */
u32 rxt_head; /**< snd_una last time we re rxted the head */
- u32 prev_dsegs_out; /**< Number of dsegs after last ack */
u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */
u32 snd_congestion; /**< snd_una_max when congestion is detected */
u32 tx_fifo_size; /**< Tx fifo size. Used to constrain cwnd */
u32 last_fib_check; /**< Last time we checked fib route for peer */
u16 mss; /**< Our max seg size that includes options */
u32 timestamp_delta; /**< Offset for timestamp */
+ u32 ipv6_flow_label; /**< flow label for ipv6 header */
} tcp_connection_t;
/* *INDENT-OFF* */
/** Allow use of TSO whenever available */
u8 allow_tso;
+ /** Set if csum offloading is enabled */
+ u8 csum_offload;
+
/** Default congestion control algorithm type */
tcp_cc_algorithm_type_e cc_algo;
always_inline tcp_connection_t *
tcp_listener_get (u32 tli)
{
- return pool_elt_at_index (tcp_main.listener_pool, tli);
+ tcp_connection_t *tc = 0;
+ if (!pool_is_free_index (tcp_main.listener_pool, tli))
+ tc = pool_elt_at_index (tcp_main.listener_pool, tli);
+ return tc;
}
always_inline tcp_connection_t *
*
* @param tc tcp connection
*/
-void tcp_bt_track_tx (tcp_connection_t * tc);
+void tcp_bt_track_tx (tcp_connection_t * tc, u32 len);
/**
* Track a tcp retransmission
*
* @param bt byte tracker
*/
int tcp_bt_is_sane (tcp_byte_tracker_t * bt);
+u8 *format_tcp_bt (u8 * s, va_list * args);
always_inline u32
tcp_end_seq (tcp_header_t * th, u32 len)
if (tcp_opts_sack_permitted (&tc->rcv_opts))
return tc->sack_sb.sacked_bytes + tc->sack_sb.lost_bytes;
else
- return tc->rcv_dupacks * tc->snd_mss;
+ return clib_min (tc->rcv_dupacks * tc->snd_mss,
+ tc->snd_nxt - tc->snd_una);
}
/**
always_inline void
tcp_persist_timer_update (tcp_connection_t * tc)
{
- tcp_timer_update (tc, TCP_TIMER_PERSIST,
- clib_max (tc->rto * TCP_TO_TIMER_TICK, 1));
+ u32 interval;
+
+ if (seq_leq (tc->snd_una, tc->snd_congestion + tc->burst_acked))
+ interval = 1;
+ else
+ interval = clib_max (tc->rto * TCP_TO_TIMER_TICK, 1);
+
+ tcp_timer_update (tc, TCP_TIMER_PERSIST, interval);
}
always_inline void