66 .sw_if_index = tc->sw_if_index,
77 tc->cc_algo->init (tc);
83 if (tc->cc_algo->cleanup)
84 tc->cc_algo->cleanup (tc);
94 tm->cc_algos[
type] = *vft;
102 return &tm->cc_algos[
type];
110 return tm->cc_last_type;
120 pool_get (tm->listener_pool, listener);
123 listener->c_c_index = listener - tm->listener_pool;
124 listener->c_lcl_port = lcl->port;
131 ip_set (&lcl->ip, iface_ip, lcl->is_ip4);
133 ip_copy (&listener->c_lcl_ip, &lcl->ip, lcl->is_ip4);
134 listener->c_is_ip4 = lcl->is_ip4;
136 listener->c_s_index = session_index;
137 listener->c_fib_index = lcl->fib_index;
138 listener->state = TCP_STATE_LISTEN;
144 return listener->c_c_index;
183 return &tc->connection;
227 pool_get (tm->half_open_connections, tc);
229 tc->c_c_index = tc - tm->half_open_connections;
250 if (tc->state == TCP_STATE_SYN_SENT)
256 tc->flags |= TCP_CONN_HALF_OPEN_DONE;
260 int thread_index = tc->c_thread_index;
272 if (tc->flags & TCP_CONN_RATE_SAMPLE)
278 pool_put (tm->connections[thread_index], tc);
302 pool_get (tm->connections[thread_index], tc);
304 tc->c_c_index = tc - tm->connections[thread_index];
305 tc->c_thread_index = thread_index;
315 u8 thread_index = tc->c_thread_index;
317 pool_put (tm->connections[thread_index], tc);
320 pool_put (tm->connections[tc->c_thread_index], tc);
333 case TCP_STATE_SYN_RCVD:
338 case TCP_STATE_SYN_SENT:
342 case TCP_STATE_ESTABLISHED:
351 case TCP_STATE_CLOSE_WAIT:
352 case TCP_STATE_FIN_WAIT_1:
353 case TCP_STATE_FIN_WAIT_2:
354 case TCP_STATE_CLOSING:
355 case TCP_STATE_LAST_ACK:
363 case TCP_STATE_CLOSED:
364 case TCP_STATE_TIME_WAIT:
367 TCP_DBG (
"reset state: %u", tc->state);
392 case TCP_STATE_SYN_SENT:
397 case TCP_STATE_SYN_RCVD:
403 case TCP_STATE_ESTABLISHED:
417 tc->flags |= TCP_CONN_FINPNDG;
424 case TCP_STATE_CLOSE_WAIT:
433 tc->flags |= TCP_CONN_FINPNDG;
435 case TCP_STATE_FIN_WAIT_1:
438 case TCP_STATE_CLOSED:
446 TCP_DBG (
"state: %u", tc->state);
498 typedef struct ip4_tcp_hdr
504 typedef struct ip6_tcp_hdr
523 hdr.ip.protocol = IP_PROTOCOL_TCP;
524 hdr.ip.address_pair.src.as_u32 = tc->c_lcl_ip.ip4.as_u32;
525 hdr.ip.address_pair.dst.as_u32 = tc->c_rmt_ip.ip4.as_u32;
526 hdr.tcp.src_port = tc->c_lcl_port;
527 hdr.tcp.dst_port = tc->c_rmt_port;
534 hdr.ip.protocol = IP_PROTOCOL_TCP;
539 hdr.tcp.src_port = tc->c_lcl_port;
540 hdr.tcp.dst_port = tc->c_rmt_port;
555 prefix.
fp_len = tc->c_is_ip4 ? 32 : 128;
564 u32 output_node_index;
571 tcp_connection_select_lb_bucket (tc, &fe->
fe_lb, &choice);
590 tcp_connection_stack_on_fib_entry (tc);
604 tmp = (
u64) tc->c_lcl_ip.ip4.as_u32 << 32 | (
u64) tc->c_rmt_ip.ip4.as_u32;
606 tmp = tc->c_lcl_ip.ip6.as_u64[0] ^ tc->c_lcl_ip.ip6.as_u64[1]
607 ^ tc->c_rmt_ip.ip6.as_u64[0] ^ tc->c_rmt_ip.ip6.as_u64[1];
609 tmp ^= tm->iss_seed.first | ((
u64) tc->c_lcl_port << 16 | tc->c_rmt_port);
610 tmp ^= tm->iss_seed.second;
612 return ((tmp >> 32) ^ (tmp & 0xffffffff));
630 tc->snd_una = tc->iss;
631 tc->snd_nxt = tc->iss + 1;
632 tc->snd_una_max = tc->snd_nxt;
639 u32 initial_bucket, byte_rate;
640 initial_bucket = 16 * tc->snd_mss;
644 tc->mrtt_us = (
u32) ~ 0;
658 if (tc->state == TCP_STATE_SYN_RCVD)
670 if (tc->flags & TCP_CONN_RATE_SAMPLE)
678 u16 * lcl_port,
u8 is_ip4)
683 index = tm->last_v4_addr_rotor++;
685 tm->last_v4_addr_rotor = 0;
686 lcl_addr->ip4.as_u32 =
tcp_cfg.ip4_src_addrs[index].as_u32;
690 index = tm->last_v6_addr_rotor++;
692 tm->last_v6_addr_rotor = 0;
711 ip46_address_t lcl_addr;
724 rmt, &lcl_addr, &lcl_port);
734 ip_copy (&tc->c_rmt_ip, &rmt->ip, rmt->is_ip4);
735 ip_copy (&tc->c_lcl_ip, &lcl_addr, rmt->is_ip4);
736 tc->c_rmt_port = rmt->port;
737 tc->c_lcl_port = clib_host_to_net_u16 (lcl_port);
738 tc->c_is_ip4 = rmt->is_ip4;
740 tc->c_fib_index = rmt->fib_index;
745 tc->state = TCP_STATE_SYN_SENT;
750 return tc->c_c_index;
754 #define _(sym, str) str, 760 #define _(sym, str) str, 773 s =
format (s,
"UNKNOWN (%d (0x%x))", state, state);
778 #define _(sym, str) str, 790 if (tc->flags & (1 << i))
792 for (i = 0; i <
last; i++)
794 if (tc->flags & (1 << i))
803 #define _(sym, str) str, 818 for (i = 0; i <
last; i++)
835 s =
format (s,
"recovery");
837 s =
format (s,
"fastrecovery");
846 return (
i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las);
856 s =
format (s,
"algo %s cwnd %u ssthresh %u bytes_acked %u\n",
857 tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked);
858 s =
format (s,
"%Ucc space %u prev_cwnd %u prev_ssthresh %u rtx_bytes %u\n",
860 tc->prev_cwnd, tc->prev_ssthresh, tc->snd_rxt_bytes);
861 s =
format (s,
"%Usnd_congestion %u dupack %u limited_transmit %u\n",
863 tc->rcv_dupacks, tc->limited_transmit - tc->iss);
872 s =
format (s,
"in segs %lu dsegs %lu bytes %lu dupacks %u\n",
873 tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in);
874 s =
format (s,
"%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n",
876 tc->data_segs_out, tc->bytes_out, tc->dupacks_out);
877 s =
format (s,
"%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n",
879 tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans,
881 s =
format (s,
"%Uerr wnd data below %u above %u ack below %u above %u",
883 tc->errors.above_data_wnd, tc->errors.below_ack_wnd,
884 tc->errors.above_ack_wnd);
892 s =
format (s,
" index: %u flags: %U timers: %U\n", tc->c_c_index,
894 s =
format (s,
" snd_una %u snd_nxt %u snd_una_max %u",
895 tc->snd_una - tc->iss, tc->snd_nxt - tc->iss,
896 tc->snd_una_max - tc->iss);
897 s =
format (s,
" rcv_nxt %u rcv_las %u\n",
898 tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs);
899 s =
format (s,
" snd_wnd %u rcv_wnd %u rcv_wscale %u ",
900 tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale);
901 s =
format (s,
"snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs,
902 tc->snd_wl2 - tc->iss);
903 s =
format (s,
" flight size %u out space %u rcv_wnd_av %u",
906 s =
format (s,
" tsval_recent %u\n", tc->tsval_recent);
907 s =
format (s,
" tsecr %u tsecr_last_ack %u tsval_recent_age %u",
908 tc->rcv_opts.tsecr, tc->tsecr_last_ack,
910 s =
format (s,
" snd_mss %u\n", tc->snd_mss);
911 s =
format (s,
" rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %.4f",
912 tc->rto, tc->rto_boff, tc->srtt, tc->mrtt_us * 1000, tc->rttvar,
914 s =
format (s,
" rtt_seq %u\n", tc->rtt_seq - tc->iss);
917 if (tc->state >= TCP_STATE_ESTABLISHED)
937 s =
format (s,
"[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
940 &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port));
944 s =
format (s,
"[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
947 &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port));
957 u32 verbose = va_arg (*args,
u32);
975 u32 tci = va_arg (*args,
u32);
976 u32 thread_index = va_arg (*args,
u32);
977 u32 verbose = va_arg (*args,
u32);
984 s =
format (s,
"empty\n");
991 u32 tci = va_arg (*args,
u32);
992 u32 __clib_unused thread_index = va_arg (*args,
u32);
993 u32 verbose = va_arg (*args,
u32);
1004 u32 tci = va_arg (*args,
u32);
1005 u32 __clib_unused thread_index = va_arg (*args,
u32);
1019 for (i = 0; i < len - 1; i++)
1022 s =
format (s,
" start %u end %u\n", block->start - tc->irs,
1023 block->end - tc->irs);
1027 block = &sacks[len - 1];
1028 s =
format (s,
" start %u end %u", block->start - tc->irs,
1029 block->end - tc->irs);
1043 for (i = 0; i < len - 1; i++)
1046 s =
format (s,
" start %u end %u\n", block->start - tc->iss,
1047 block->end - tc->iss);
1051 block = &sacks[len - 1];
1052 s =
format (s,
" start %u end %u", block->start - tc->iss,
1053 block->end - tc->iss);
1064 s =
format (s,
" [%u, %u]", hole->start - tc->iss, hole->end - tc->iss);
1066 s =
format (s,
" [%u, %u]", hole->start, hole->end);
1078 s =
format (s,
"sacked_bytes %u last_sacked_bytes %u lost_bytes %u\n",
1079 sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes);
1080 s =
format (s,
"%Ulast_bytes_delivered %u high_sacked %u snd_una_adv %u\n",
1082 sb->high_sacked - tc->iss, sb->snd_una_adv);
1083 s =
format (s,
"%Ucur_rxt_hole %u high_rxt %u rescue_rxt %u",
1085 sb->high_rxt - tc->iss, sb->rescue_rxt - tc->iss);
1090 indent, sb->head, sb->tail,
pool_elts (sb->holes),
1106 return &tc->connection;
1113 return &tc->connection;
1141 return tc->snd_wnd <= snd_space ? tc->snd_wnd : 0;
1147 return snd_space < tc->cwnd ? 0 : snd_space;
1150 return snd_space - (snd_space % tc->snd_mss);
1166 int snd_space, snt_limited;
1169 || tc->state == TCP_STATE_CLOSED))
1178 && tc->sack_sb.last_sacked_bytes == 0)))
1180 if (tc->rcv_dupacks == 1 && tc->limited_transmit != tc->snd_nxt)
1181 tc->limited_transmit = tc->snd_nxt;
1184 snt_limited = tc->snd_nxt - tc->limited_transmit;
1185 snd_space =
clib_max (2 * tc->snd_mss - snt_limited, 0);
1201 tc->snd_wnd - (tc->snd_nxt - tc->snd_una));
1212 return (tc->snd_nxt - tc->snd_una);
1221 tw_timer_expire_timers_16t_2w_512sl (&wrk->
timer_wheel, now);
1229 if (tc->flags & TCP_CONN_PSH_PENDING)
1231 tc->flags |= TCP_CONN_PSH_PENDING;
1256 .transport_options = {
1275 rate = tc->cwnd / srtt;
1287 start_bucket, last_time);
1304 case TCP_STATE_CLOSE_WAIT:
1308 if (!(tc->flags & TCP_CONN_FINPNDG))
1319 tc->snd_nxt = tc->snd_una;
1328 case TCP_STATE_FIN_WAIT_1:
1331 if (tc->flags & TCP_CONN_FINPNDG)
1347 case TCP_STATE_LAST_ACK:
1348 case TCP_STATE_CLOSING:
1375 u32 connection_index, timer_id;
1377 for (i = 0; i <
vec_len (expired_timers); i++)
1380 connection_index = expired_timers[
i] & 0x0FFFFFFF;
1381 timer_id = expired_timers[
i] >> 28;
1383 TCP_EVT_DBG (TCP_EVT_TIMER_POP, connection_index, timer_id);
1393 tw_timer_wheel_16t_2w_512sl_t *tw;
1396 tw = &tm->wrk_ctx[ii].timer_wheel;
1410 tm->iss_seed.first = (
u64)
random_u32 (&default_seed) << 32;
1411 tm->iss_seed.second =
random_u64 (&time_now);
1418 u32 num_threads, n_workers, prealloc_conn_per_wrk;
1445 n_workers = num_threads == 1 ? 1 : vtm->
n_threads;
1446 prealloc_conn_per_wrk =
tcp_cfg.preallocated_connections / n_workers;
1448 for (thread = 0; thread < num_threads; thread++)
1450 vec_validate (tm->wrk_ctx[thread].pending_deq_acked, 255);
1451 vec_validate (tm->wrk_ctx[thread].pending_disconnects, 255);
1460 if ((thread > 0 || num_threads == 1) && prealloc_conn_per_wrk)
1467 if (
tcp_cfg.preallocated_half_open_connections)
1469 tcp_cfg.preallocated_half_open_connections);
1476 if (num_threads > 1)
1512 tm->punt_unknown4 = is_add;
1514 tm->punt_unknown6 = is_add;
1526 tcp_cfg.max_rx_fifo = 32 << 20;
1527 tcp_cfg.min_rx_fifo = 4 << 10;
1530 tcp_cfg.initial_cwnd_multiplier = 0;
1587 if (
unformat (input,
"%s", &cc_algo_name)
1588 && ((p =
hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
1608 if (!
unformat (input, cc_alg->name))
1611 if (cc_alg->unformat_cfg
1614 if (cc_alg->unformat_cfg (&sub_input))
1626 if (
unformat (input,
"preallocated-connections %d",
1627 &
tcp_cfg.preallocated_connections))
1629 else if (
unformat (input,
"preallocated-half-open-connections %d",
1630 &
tcp_cfg.preallocated_half_open_connections))
1632 else if (
unformat (input,
"buffer-fail-fraction %f",
1633 &
tcp_cfg.buffer_fail_fraction))
1643 else if (
unformat (input,
"initial-cwnd-multiplier %d",
1644 &
tcp_cfg.initial_cwnd_multiplier))
1646 else if (
unformat (input,
"no-tx-pacing"))
1653 else if (
unformat (input,
"closewait-time %d", &
tcp_cfg.closewait_time))
1655 else if (
unformat (input,
"timewait-time %d", &
tcp_cfg.timewait_time))
1657 else if (
unformat (input,
"finwait1-time %d", &
tcp_cfg.finwait1_time))
1659 else if (
unformat (input,
"finwait2-time %d", &
tcp_cfg.finwait2_time))
1692 u32 start_host_byte_order, end_host_byte_order;
1703 if (fib_index == ~0)
1704 return VNET_API_ERROR_NO_SUCH_FIB;
1706 start_host_byte_order = clib_net_to_host_u32 (start->
as_u32);
1707 end_host_byte_order = clib_net_to_host_u32 (end->
as_u32);
1710 if ((end_host_byte_order - start_host_byte_order) > (10 << 10))
1711 return VNET_API_ERROR_INVALID_ARGUMENT;
1722 return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
1757 start_host_byte_order++;
1758 start->
as_u32 = clib_host_to_net_u32 (start_host_byte_order);
1760 while (start_host_byte_order <= end_host_byte_order);
1788 if (fib_index == ~0)
1789 return VNET_API_ERROR_NO_SUCH_FIB;
1809 return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
1813 if (sw_if_index == (
u32) ~ 0)
1814 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
1830 if (!memcmp (start, end,
sizeof (start[0])))
1835 for (i = 15; i >= 0; i--)
1838 if (tmp.
as_u8[i] != 0)
1864 memcpy (&v4end, &v4start,
sizeof (v4start));
1872 memcpy (&v6end, &v6start,
sizeof (v6start));
1875 else if (
unformat (input,
"fib-table %d", &table_id))
1881 if (!v4set && !v6set)
1893 case VNET_API_ERROR_NO_SUCH_FIB:
1896 case VNET_API_ERROR_INVALID_ARGUMENT:
1914 case VNET_API_ERROR_NO_SUCH_FIB:
1928 .path =
"tcp src-address",
1929 .short_help =
"tcp src-address <ip-addr> [- <ip-addr>] add src address range",
1937 #if TCP_SCOREBOARD_TRACE 1945 s =
format (s,
"scoreboard trace:");
1948 s =
format (s,
"{%u, %u, %u, %u, %u}, ", block->start, block->end,
1949 block->ack, block->snd_una_max, block->group);
1991 .path =
"show tcp scoreboard trace",
1992 .short_help =
"show tcp scoreboard trace <connection>",
2002 u32 next_ack,
left, group, has_new_ack = 0;
2008 s =
format (s,
"scoreboard tracing not enabled");
2018 dummy_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
2020 #if TCP_SCOREBOARD_TRACE 2021 trace = tc->sack_sb.trace;
2022 trace_len =
vec_len (tc->sack_sb.trace);
2025 for (i = 0; i < trace_len; i++)
2027 if (trace[i].ack != 0)
2029 dummy_tc->snd_una = trace[
i].ack - 1448;
2030 dummy_tc->snd_una_max = trace[
i].ack;
2035 while (left < trace_len)
2037 group = trace[
left].group;
2040 while (trace[left].group == group)
2042 if (trace[left].ack != 0)
2045 s =
format (s,
"Adding ack %u, snd_una_max %u, segs: ",
2046 trace[left].ack, trace[left].snd_una_max);
2047 dummy_tc->snd_una_max = trace[
left].snd_una_max;
2048 next_ack = trace[
left].ack;
2054 s =
format (s,
"[%u, %u], ", trace[left].start,
2056 vec_add2 (dummy_tc->rcv_opts.sacks, block, 1);
2057 block->start = trace[
left].start;
2058 block->end = trace[
left].end;
2066 dummy_tc->snd_una = next_ack + dummy_tc->sack_sb.snd_una_adv;
2070 &dummy_tc->sack_sb);
2115 .path =
"tcp replay scoreboard",
2116 .short_help =
"tcp replay scoreboard <connection>",
2130 tm->punt_unknown4 ?
"enabled" :
"disabled");
2132 tm->punt_unknown6 ?
"enabled" :
"disabled");
2138 .path =
"show tcp punt",
2139 .short_help =
"show tcp punt",
static void tcp_session_close(u32 conn_index, u32 thread_index)
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
void dpo_stack_from_node(u32 child_node_index, dpo_id_t *dpo, const dpo_id_t *parent)
Stack one DPO object on another, and thus establish a child parent relationship.
fib_protocol_t fp_proto
protocol type
#define ENDPOINT_INVALID_INDEX
static vlib_cli_command_t trace
(constructor) VLIB_CLI_COMMAND (trace)
static void tcp_add_del_adjacency(tcp_connection_t *tc, u8 is_add)
void receive_dpo_add_or_lock(dpo_proto_t proto, u32 sw_if_index, const ip46_address_t *nh_addr, dpo_id_t *dpo)
static u8 * format_tcp_listener_session(u8 *s, va_list *args)
const char * tcp_fsm_states[]
static clib_error_t * tcp_config_fn(vlib_main_t *vm, unformat_input_t *input)
#define tcp_in_recovery(tc)
static f64 tcp_time_now_us(u32 thread_index)
void ip_copy(ip46_address_t *dst, ip46_address_t *src, u8 is_ip4)
static uword random_default_seed(void)
Default random seed (unix/linux user-mode)
#define seq_leq(_s1, _s2)
struct _sack_block sack_block_t
u8 * format_tcp_rcv_sacks(u8 *s, va_list *args)
void ip6_register_protocol(u32 protocol, u32 node_index)
struct _scoreboard_trace_elt scoreboard_trace_elt_t
u8 * format_tcp_sacks(u8 *s, va_list *args)
vnet_main_t * vnet_get_main(void)
static clib_error_t * ip4_lookup_init(vlib_main_t *vm)
const char * tcp_connection_flags_str[]
vlib_node_registration_t tcp4_output_node
(constructor) VLIB_REGISTER_NODE (tcp4_output_node)
void scoreboard_init(sack_scoreboard_t *sb)
uword unformat_transport_connection(unformat_input_t *input, va_list *args)
static u32 tcp_session_send_space(transport_connection_t *trans_conn)
static transport_connection_t * tcp_half_open_session_get_transport(u32 conn_index)
void ip_set(ip46_address_t *dst, void *src, u8 is_ip4)
#define clib_memcpy_fast(a, b, c)
static u32 tcp_session_tx_fifo_offset(transport_connection_t *trans_conn)
static u32 ip4_compute_flow_hash(const ip4_header_t *ip, flow_hash_config_t flow_hash_config)
struct _sack_scoreboard sack_scoreboard_t
void session_transport_delete_notify(transport_connection_t *tc)
Notification from transport that connection is being deleted.
static int tcp_alloc_custom_local_endpoint(tcp_main_t *tm, ip46_address_t *lcl_addr, u16 *lcl_port, u8 is_ip4)
static f64 vlib_time_now(vlib_main_t *vm)
static tcp_connection_t * tcp_half_open_connection_new(void)
static u8 * format_tcp_timers(u8 *s, va_list *args)
static tcp_connection_t * tcp_half_open_connection_get(u32 conn_index)
sack_scoreboard_hole_t * scoreboard_next_hole(sack_scoreboard_t *sb, sack_scoreboard_hole_t *hole)
flow_hash_config_t lb_hash_config
the hash config to use when selecting a bucket.
static_always_inline void clib_spinlock_unlock_if_init(clib_spinlock_t *p)
struct _tcp_main tcp_main_t
void tcp_connection_timers_reset(tcp_connection_t *tc)
Stop all connection timers.
vlib_node_registration_t tcp6_output_node
(constructor) VLIB_REGISTER_NODE (tcp6_output_node)
void dpo_copy(dpo_id_t *dst, const dpo_id_t *src)
atomic copy a data-plane object.
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
static u64 clib_cpu_time_now(void)
timer_expiration_handler tcp_timer_retransmit_handler
static u64 clib_xxhash(u64 key)
static heap_elt_t * last(heap_header_t *h)
u32 tcp_session_push_header(transport_connection_t *tconn, vlib_buffer_t *b)
void session_transport_reset_notify(transport_connection_t *tc)
Notify application that connection has been reset.
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
int ip6_neighbor_proxy_add_del(u32 sw_if_index, ip6_address_t *addr, u8 is_del)
void tcp_update_burst_snd_vars(tcp_connection_t *tc)
Update burst send vars.
#define hash_set_mem(h, key, value)
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
void * ip_interface_get_first_ip(u32 sw_if_index, u8 is_ip4)
struct _tcp_connection tcp_connection_t
static u32 tcp_available_cc_snd_space(const tcp_connection_t *tc)
Estimate of how many bytes we can still push into the network.
static u64 random_u64(u64 *seed)
64-bit random number generator Again, constants courtesy of Donald Knuth.
static u16 tcp_session_send_mss(transport_connection_t *trans_conn)
Compute maximum segment size for session layer.
static tcp_connection_t * tcp_get_connection_from_transport(transport_connection_t *tconn)
static void tcp_initialize_iss_seed(tcp_main_t *tm)
void ip4_register_protocol(u32 protocol, u32 node_index)
static void tcp_initialize_timer_wheels(tcp_main_t *tm)
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
struct _tcp_header tcp_header_t
int tcp_half_open_connection_cleanup(tcp_connection_t *tc)
Try to cleanup half-open connection.
vlib_main_t ** vlib_mains
static void tcp_half_open_connection_del(tcp_connection_t *tc)
Cleanup half-open connection.
struct _sack_scoreboard_hole sack_scoreboard_hole_t
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
tcp_cc_algorithm_t * tcp_cc_algo_get(tcp_cc_algorithm_type_e type)
#define TCP_TICK
TCP tick period (s)
unformat_function_t * unformat_pg_edit
static void tcp_connection_set_state(tcp_connection_t *tc, tcp_state_t state)
void tcp_init_snd_vars(tcp_connection_t *tc)
Initialize connection send variables.
vl_api_interface_index_t sw_if_index
#define VLIB_INIT_FUNCTION(x)
static u8 * format_tcp_vars(u8 *s, va_list *args)
u16 lb_n_buckets_minus_1
number of buckets in the load-balance - 1.
void tcp_connection_timers_init(tcp_connection_t *tc)
Initialize all connection timers as invalid.
static u32 tcp_available_output_snd_space(const tcp_connection_t *tc)
static void tcp_connection_unbind(u32 listener_index)
Aggregrate type for a prefix.
tw_timer_wheel_16t_2w_512sl_t timer_wheel
worker timer wheel
#define clib_error_return(e, args...)
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
vhost_vring_state_t state
static u8 * tcp_scoreboard_dump_trace(u8 *s, sack_scoreboard_t *sb)
timer_expiration_handler tcp_timer_retransmit_syn_handler
pthread_t thread[MAX_CONNS]
int transport_alloc_local_endpoint(u8 proto, transport_endpoint_cfg_t *rmt_cfg, ip46_address_t *lcl_addr, u16 *lcl_port)
static u32 tcp_time_now(void)
u32 tcp_snd_space(tcp_connection_t *tc)
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
u16 fp_len
The mask length.
#define vlib_call_init_function(vm, x)
void tcp_api_reference(void)
#define TCP_EVT_DBG(_evt, _args...)
fib_node_index_t fib_table_lookup(u32 fib_index, const fib_prefix_t *prefix)
Perfom a longest prefix match in the non-forwarding table.
static u32 tcp_connection_bind(u32 session_index, transport_endpoint_t *lcl)
static i32 tcp_rcv_wnd_available(tcp_connection_t *tc)
#define hash_create_string(elts, value_bytes)
void transport_connection_tx_pacer_init(transport_connection_t *tc, u32 rate_bytes_per_sec, u32 initial_bucket)
Initialize tx pacer for connection.
static void tcp_cc_init(tcp_connection_t *tc)
struct _transport_proto_vft transport_proto_vft_t
static void clib_spinlock_init(clib_spinlock_t *p)
static void tcp_timer_set(tcp_connection_t *tc, u8 timer_id, u32 interval)
uword unformat_tcp_cc_algo_cfg(unformat_input_t *input, va_list *va)
vl_api_fib_path_type_t type
static u32 tcp_session_unbind(u32 listener_index)
static timer_expiration_handler * timer_expiration_handlers[TCP_N_TIMERS]
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
static clib_error_t * tcp_main_enable(vlib_main_t *vm)
vlib_main_t * vm
convenience pointer to this thread's vlib main
#define ADJ_INDEX_INVALID
Invalid ADJ index - used when no adj is known likewise blazoned capitals INVALID speak volumes where ...
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
void tcp_bt_init(tcp_connection_t *tc)
Byte tracker initialize.
timer_expiration_handler tcp_timer_persist_handler
static transport_connection_t * tcp_session_get_transport(u32 conn_index, u32 thread_index)
static ip_protocol_info_t * ip_get_protocol_info(ip_main_t *im, u32 protocol)
int vnet_proxy_arp_enable_disable(vnet_main_t *vnm, u32 sw_if_index, u8 enable)
#define tcp_in_fastrecovery(tc)
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
void tcp_connection_tx_pacer_reset(tcp_connection_t *tc, u32 window, u32 start_bucket)
dpo_type_t dpoi_type
the type
format_function_t * format_header
static const dpo_id_t * load_balance_get_bucket_i(const load_balance_t *lb, u32 bucket)
void tcp_rcv_sacks(tcp_connection_t *tc, u32 ack)
void tcp_send_syn(tcp_connection_t *tc)
Send SYN.
tcp_connection_t * tcp_connection_alloc(u8 thread_index)
load-balancing over a choice of [un]equal cost paths
static transport_connection_t * tcp_session_get_listener(u32 listener_index)
static u32 transport_max_rx_dequeue(transport_connection_t *tc)
void tcp_connection_tx_pacer_update(tcp_connection_t *tc)
static u32 ip6_compute_flow_hash(const ip6_header_t *ip, flow_hash_config_t flow_hash_config)
#define pool_put(P, E)
Free an object E in pool P.
static void tcp_expired_timers_dispatch(u32 *expired_timers)
#define TCP_TIMER_HANDLE_INVALID
static void tcp_session_cleanup(u32 conn_index, u32 thread_index)
static u32 tcp_flight_size(const tcp_connection_t *tc)
Our estimate of the number of bytes in flight (pipe size)
#define VLIB_CONFIG_FUNCTION(x, n,...)
static u8 * format_tcp_stats(u8 *s, va_list *args)
u8 * format_tcp_scoreboard(u8 *s, va_list *args)
clib_error_t * vnet_tcp_enable_disable(vlib_main_t *vm, u8 is_en)
static u8 transport_connection_is_tx_paced(transport_connection_t *tc)
Check if transport connection is paced.
static void tcp_timer_waitclose_handler(u32 conn_index)
void( timer_expiration_handler)(u32 index)
#define foreach_vlib_main(body)
void transport_connection_tx_pacer_update(transport_connection_t *tc, u64 bytes_per_sec)
Update tx pacer pacing rate.
#define TCP_DBG(_fmt, _args...)
u32 fib_entry_get_resolving_interface(fib_node_index_t entry_index)
static void tcp_timer_reset(tcp_connection_t *tc, u8 timer_id)
void tcp_connection_free(tcp_connection_t *tc)
static_always_inline u32 vlib_buffer_get_default_data_size(vlib_main_t *vm)
clib_error_t * ip_main_init(vlib_main_t *vm)
fib_node_index_t fib_table_entry_special_dpo_update(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags, const dpo_id_t *dpo)
Update a 'special' entry to the FIB that links to the DPO passed A special entry is an entry that the...
int tcp_configure_v4_source_address_range(vlib_main_t *vm, ip4_address_t *start, ip4_address_t *end, u32 table_id)
Configure an ipv4 source address range.
static_always_inline uword vlib_get_thread_index(void)
static void tcp_add_del_adj_cb(tcp_add_del_adj_args_t *args)
static clib_error_t * tcp_src_address(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
void tcp_connection_close(tcp_connection_t *tc)
Begin connection closing procedure.
void tcp_send_reset(tcp_connection_t *tc)
Build and set reset packet for connection.
#define vec_free(V)
Free vector's memory (no header).
static void tcp_session_flush_data(transport_connection_t *tconn)
#define clib_warning(format, args...)
static u8 * format_tcp_congestion(u8 *s, va_list *args)
struct _transport_connection transport_connection_t
const char * tcp_dbg_evt_str[]
static u8 * format_tcp_connection_flags(u8 *s, va_list *args)
u32 fib_node_index_t
A typedef of a node index.
uword unformat_tcp_cc_algo(unformat_input_t *input, va_list *va)
vlib_node_registration_t tcp6_input_node
(constructor) VLIB_REGISTER_NODE (tcp6_input_node)
fib_node_index_t tcp_lookup_rmt_in_fib(tcp_connection_t *tc)
fib_entry_t * fib_entry_get(fib_node_index_t index)
int vnet_proxy_arp_add_del(ip4_address_t *lo_addr, ip4_address_t *hi_addr, u32 fib_index, int is_del)
#define pool_init_fixed(pool, max_elts)
initialize a fixed-size, preallocated pool
void transport_endpoint_cleanup(u8 proto, ip46_address_t *lcl_ip, u16 port)
void transport_register_protocol(transport_proto_t transport_proto, const transport_proto_vft_t *vft, fib_protocol_t fib_proto, u32 output_node)
Register transport virtual function table.
#define VLIB_CLI_COMMAND(x,...)
static u32 transport_max_tx_dequeue(transport_connection_t *tc)
static void tcp_timer_update(tcp_connection_t *tc, u8 timer_id, u32 interval)
#define pool_put_index(p, i)
Free pool element with given index.
static int tcp_session_open(transport_endpoint_cfg_t *rmt)
tcp_cc_algorithm_type_e tcp_cc_algo_new_type(const tcp_cc_algorithm_t *vft)
Register new cc algo type.
enum _tcp_cc_algorithm_type tcp_cc_algorithm_type_e
static clib_error_t * tcp_scoreboard_trace_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
static void tcp_configuration_init(void)
Initialize default values for tcp parameters.
enum vnet_link_t_ vnet_link_t
Link Type: A description of the protocol of packets on the link.
void tcp_flush_frames_to_output(tcp_worker_ctx_t *wrk)
Flush v4 and v6 tcp and ip-lookup tx frames for thread index.
static load_balance_t * load_balance_get(index_t lbi)
#define seq_geq(_s1, _s2)
static u8 * format_tcp_congestion_status(u8 *s, va_list *args)
static u32 tcp_generate_random_iss(tcp_connection_t *tc)
Generate random iss as per rfc6528.
reliable transport protos
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
From the control plane API.
void tcp_cc_algo_register(tcp_cc_algorithm_type_e type, const tcp_cc_algorithm_t *vft)
Register exiting cc algo type.
u8 * tcp_scoreboard_replay(u8 *s, tcp_connection_t *tc, u8 verbose)
int tcp_configure_v6_source_address_range(vlib_main_t *vm, ip6_address_t *start, ip6_address_t *end, u32 table_id)
Configure an ipv6 source address range.
struct _tcp_cc_algorithm tcp_cc_algorithm_t
static clib_error_t * tcp_init(vlib_main_t *vm)
dpo_id_t fe_lb
The load-balance used for forwarding.
u8 ip_is_zero(ip46_address_t *ip46_address, u8 is_ip4)
static const transport_proto_vft_t tcp_proto
void tcp_punt_unknown(vlib_main_t *vm, u8 is_ip4, u8 is_add)
void transport_connection_tx_pacer_reset(transport_connection_t *tc, u32 rate_bytes_per_sec, u32 start_bucket, u64 time_now)
void tcp_connection_reset(tcp_connection_t *tc)
Notify session that connection has been reset.
vlib_node_registration_t tcp4_input_node
(constructor) VLIB_REGISTER_NODE (tcp4_input_node)
static u32 tcp_session_bind(u32 session_index, transport_endpoint_t *tep)
index_t dpoi_index
the index of objects of that type
#define FIB_NODE_INDEX_INVALID
#define foreach_tcp_fsm_state
TCP FSM state definitions as per RFC793.
void tcp_send_fin(tcp_connection_t *tc)
Send FIN.
#define foreach_tcp_connection_flag
TCP connection flags.
#define foreach_tcp_timer
TCP timers.
static u8 * format_tcp_connection_id(u8 *s, va_list *args)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
void vlib_rpc_call_main_thread(void *callback, u8 *args, u32 arg_size)
static void tcp_cc_cleanup(tcp_connection_t *tc)
uword unformat_vlib_cli_sub_input(unformat_input_t *i, va_list *args)
sack_scoreboard_hole_t * scoreboard_first_hole(sack_scoreboard_t *sb)
static u32 tcp_round_snd_space(tcp_connection_t *tc, u32 snd_space)
static tcp_worker_ctx_t * tcp_get_worker(u32 thread_index)
void session_transport_closed_notify(transport_connection_t *tc)
Notification from transport that it is closed.
void tcp_connection_init_vars(tcp_connection_t *tc)
Initialize tcp connection variables.
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
const char * tcp_conn_timers[]
static u8 * format_tcp_session(u8 *s, va_list *args)
#define hash_get_mem(h, key)
u8 * format_tcp_connection(u8 *s, va_list *args)
static u8 * format_tcp_sack_hole(u8 *s, va_list *args)
static tcp_connection_t * tcp_connection_get(u32 conn_index, u32 thread_index)
static u32 random_u32(u32 *seed)
32-bit random number generator
#define TCP_SCOREBOARD_TRACE
#define TCP_TIMER_TICK
Timer tick in seconds.
int session_stream_connect_notify(transport_connection_t *tc, u8 is_fail)
static vlib_thread_main_t * vlib_get_thread_main()
void tcp_connection_cleanup(tcp_connection_t *tc)
Cleans up connection state.
void tcp_connection_del(tcp_connection_t *tc)
Connection removal.
void tcp_init_mss(tcp_connection_t *tc)
adj_index_t adj_nbr_add_or_lock(fib_protocol_t nh_proto, vnet_link_t link_type, const ip46_address_t *nh_addr, u32 sw_if_index)
Neighbour Adjacency sub-type.
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
#define vec_foreach(var, vec)
Vector iterator.
#define TCP_TSTAMP_RESOLUTION
Time stamp resolution.
static u8 * format_tcp_half_open_session(u8 *s, va_list *args)
#define tcp_opts_sack_permitted(_to)
static u32 tcp_snd_space_inline(tcp_connection_t *tc)
Compute tx window session is allowed to fill.
int transport_alloc_local_port(u8 proto, ip46_address_t *ip)
Allocate local port and add if successful add entry to local endpoint table to mark the pair as used...
u8 * format_tcp_state(u8 *s, va_list *args)
static clib_error_t * ip6_lookup_init(vlib_main_t *vm)
static clib_error_t * show_tcp_punt_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
static void tcp_update_time(f64 now, u8 thread_index)
void tcp_enable_pacing(tcp_connection_t *tc)
static tcp_main_t * vnet_get_tcp_main()
static void tcp_cong_recovery_off(tcp_connection_t *tc)
timer_expiration_handler tcp_timer_delack_handler
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
static_always_inline void clib_spinlock_lock_if_init(clib_spinlock_t *p)
static u32 tcp_set_time_now(tcp_worker_ctx_t *wrk)
static clib_error_t * tcp_show_scoreboard_trace_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
void tcp_bt_cleanup(tcp_connection_t *tc)
Byte tracker cleanup.
static tcp_connection_t * tcp_listener_get(u32 tli)
adj_index_t adj_nbr_find(fib_protocol_t nh_proto, vnet_link_t link_type, const ip46_address_t *nh_addr, u32 sw_if_index)
Lookup neighbor adjancency.
int tcp_session_custom_tx(void *conn, u32 max_burst_size)
static uword pool_elts(void *v)
Number of active elements in a pool.