int bogus = ~0;
ASSERT ((pkt_ih6->ip_version_traffic_class_and_flow_label & 0xF0) ==
0x60);
- ih6 = vlib_buffer_push_ip6 (vm, b, &pkt_ih6->dst_address,
- &pkt_ih6->src_address, IP_PROTOCOL_TCP);
+ ih6 = vlib_buffer_push_ip6_custom (vm, b, &pkt_ih6->dst_address,
+ &pkt_ih6->src_address,
+ IP_PROTOCOL_TCP,
+ tc->ipv6_flow_label);
th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ih6, &bogus);
ASSERT (!bogus);
}
ip6_header_t *ih;
int bogus = ~0;
- ih = vlib_buffer_push_ip6 (vm, b, &tc->c_lcl_ip6,
- &tc->c_rmt_ip6, IP_PROTOCOL_TCP);
+ ih = vlib_buffer_push_ip6_custom (vm, b, &tc->c_lcl_ip6,
+ &tc->c_rmt_ip6, IP_PROTOCOL_TCP,
+ tc->ipv6_flow_label);
th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ih, &bogus);
ASSERT (!bogus);
}
tcp_send_reset (tc);
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
session_transport_closing_notify (&tc->connection);
+ session_transport_closed_notify (&tc->connection);
tcp_connection_timers_reset (tc);
tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, tcp_cfg.closewait_time);
return;
u32 tx_adv_sack = sb->high_sacked - tc->snd_congestion;
f64 rr = (f64) tc->ssthresh / tc->prev_cwnd;
+ if (tcp_fastrecovery_first (tc))
+ return 1;
+
return (tx_adv_sack > (tc->snd_una - tc->prr_start) * rr);
}
vlib_buffer_t *b = 0;
sack_scoreboard_t *sb;
int snd_space;
- u64 time_now;
ASSERT (tcp_in_cong_recovery (tc));
- time_now = wrk->vm->clib_time.last_cpu_time;
- burst_bytes = transport_connection_tx_pacer_burst (&tc->connection,
- time_now);
+ burst_bytes = transport_connection_tx_pacer_burst (&tc->connection);
burst_size = clib_min (burst_size, burst_bytes / tc->snd_mss);
if (!burst_size)
{
&& tc->rxt_head != tc->snd_una
&& tcp_retransmit_should_retry_head (tc, sb))
{
- n_written = tcp_prepare_retransmit_segment (wrk, tc, 0, tc->snd_mss,
- &b);
+ max_bytes = clib_min (tc->snd_mss, tc->snd_congestion - tc->snd_una);
+ n_written = tcp_prepare_retransmit_segment (wrk, tc, 0, max_bytes, &b);
if (!n_written)
{
tcp_program_retransmit (tc);
ASSERT (tc->rxt_delivered <= tc->snd_rxt_bytes);
}
+ tcp_fastrecovery_first_off (tc);
+
TCP_EVT (TCP_EVT_CC_EVT, tc, 0);
hole = scoreboard_get_hole (sb, sb->cur_rxt_hole);
if (reset_pacer)
{
- transport_connection_tx_pacer_reset_bucket (&tc->connection,
- vm->clib_time.
- last_cpu_time);
+ transport_connection_tx_pacer_reset_bucket (&tc->connection);
}
else
{
tcp_retransmit_no_sack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc,
u32 burst_size)
{
- u32 n_written = 0, offset = 0, bi, max_deq, n_segs_now;
+ u32 n_written = 0, offset = 0, bi, max_deq, n_segs_now, max_bytes;
u32 burst_bytes, sent_bytes;
vlib_main_t *vm = wrk->vm;
int snd_space, n_segs = 0;
u8 cc_limited = 0;
vlib_buffer_t *b;
- u64 time_now;
- ASSERT (tcp_in_fastrecovery (tc));
+ ASSERT (tcp_in_cong_recovery (tc));
TCP_EVT (TCP_EVT_CC_EVT, tc, 0);
- time_now = wrk->vm->clib_time.last_cpu_time;
- burst_bytes = transport_connection_tx_pacer_burst (&tc->connection,
- time_now);
+ burst_bytes = transport_connection_tx_pacer_burst (&tc->connection);
burst_size = clib_min (burst_size, burst_bytes / tc->snd_mss);
if (!burst_size)
{
* segment. */
while (snd_space > 0 && n_segs < burst_size)
{
- n_written = tcp_prepare_retransmit_segment (wrk, tc, offset,
- tc->snd_mss, &b);
+ max_bytes = clib_min (tc->snd_mss,
+ tc->snd_congestion - tc->snd_una - offset);
+ if (!max_bytes)
+ break;
+ n_written = tcp_prepare_retransmit_segment (wrk, tc, offset, max_bytes,
+ &b);
/* Nothing left to retransmit */
if (n_written == 0)
snd_space = clib_min (max_deq, snd_space);
burst_size = clib_min (burst_size - n_segs, snd_space / tc->snd_mss);
n_segs_now = tcp_transmit_unsent (wrk, tc, burst_size);
- if (max_deq > n_segs_now * tc->snd_mss)
+ if (n_segs_now && max_deq > n_segs_now * tc->snd_mss)
tcp_program_retransmit (tc);
n_segs += n_segs_now;
}
tcp_worker_ctx_t *wrk;
u32 n_segs;
+ if (PREDICT_FALSE (tc->state == TCP_STATE_CLOSED))
+ return 0;
+
wrk = tcp_get_worker (tc->c_thread_index);
if (tcp_opts_sack_permitted (&tc->rcv_opts))
ih0 = vlib_buffer_push_ip4 (vm, b0, &tc0->c_lcl_ip4, &tc0->c_rmt_ip4,
IP_PROTOCOL_TCP, tcp_csum_offload (tc0));
else
- ih0 = vlib_buffer_push_ip6 (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6,
- IP_PROTOCOL_TCP);
+ ih0 =
+ vlib_buffer_push_ip6_custom (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6,
+ IP_PROTOCOL_TCP, tc0->ipv6_flow_label);
}