/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Copyright (c) 2016-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
#include <vnet/dpo/receive_dpo.h>
#include <vnet/ip/ip6_neighbor.h>
#include <math.h>
+#include <vnet/ethernet/arp.h>
tcp_main_t tcp_main;
sizeof (args));
}
+static void
+tcp_cc_init (tcp_connection_t * tc)
+{
+ tc->cc_algo = tcp_cc_algo_get (tcp_main.cc_algo);
+ tc->cc_algo->init (tc);
+}
+
+static void
+tcp_cc_cleanup (tcp_connection_t * tc)
+{
+ if (tc->cc_algo->cleanup)
+ tc->cc_algo->cleanup (tc);
+}
+
+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;
+ hash_set_mem (tm->cc_algo_by_name, vft->name, type);
+}
+
+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];
+}
+
+tcp_cc_algorithm_type_e
+tcp_cc_algo_new_type (const tcp_cc_algorithm_t * vft)
+{
+ tcp_main_t *tm = vnet_get_tcp_main ();
+ tcp_cc_algo_register (++tm->cc_last_type, vft);
+ return tm->cc_last_type;
+}
+
static u32
tcp_connection_bind (u32 session_index, transport_endpoint_t * lcl)
{
{
tcp_main_t *tm = &tcp_main;
+ TCP_EVT_DBG (TCP_EVT_DELETE, tc);
+
/* Cleanup local endpoint if this was an active connect */
transport_endpoint_cleanup (TRANSPORT_PROTO_TCP, &tc->c_lcl_ip,
tc->c_lcl_port);
if (!tc->c_is_ip4 && ip6_address_is_link_local_unicast (&tc->c_rmt_ip6))
tcp_add_del_adjacency (tc, 0);
+ tcp_cc_cleanup (tc);
+ vec_free (tc->snd_sacks);
+ vec_free (tc->snd_sacks_fl);
+
+ if (tc->flags & TCP_CONN_RATE_SAMPLE)
+ tcp_bt_cleanup (tc);
+
/* Poison the entry */
if (CLIB_DEBUG > 0)
clib_memset (tc, 0xFA, sizeof (*tc));
void
tcp_connection_del (tcp_connection_t * tc)
{
- TCP_EVT_DBG (TCP_EVT_DELETE, tc);
- stream_session_delete_notify (&tc->connection);
+ session_transport_delete_notify (&tc->connection);
tcp_connection_cleanup (tc);
}
tcp_connection_free (tcp_connection_t * tc)
{
tcp_main_t *tm = &tcp_main;
+ if (CLIB_DEBUG)
+ {
+ u8 thread_index = tc->c_thread_index;
+ clib_memset (tc, 0xFA, sizeof (*tc));
+ pool_put (tm->connections[thread_index], tc);
+ return;
+ }
pool_put (tm->connections[tc->c_thread_index], tc);
- if (CLIB_DEBUG > 0)
- clib_memset (tc, 0xFA, sizeof (*tc));
}
/** Notify session that connection has been reset.
{
case TCP_STATE_SYN_RCVD:
/* Cleanup everything. App wasn't notified yet */
- stream_session_delete_notify (&tc->connection);
+ session_transport_delete_notify (&tc->connection);
tcp_connection_cleanup (tc);
break;
case TCP_STATE_SYN_SENT:
/* Set the cleanup timer, in case the session layer/app don't
* cleanly close the connection */
tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLOSEWAIT_TIME);
- stream_session_reset_notify (&tc->connection);
+ session_transport_reset_notify (&tc->connection);
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ session_transport_closed_notify (&tc->connection);
break;
case TCP_STATE_CLOSE_WAIT:
case TCP_STATE_FIN_WAIT_1:
tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLOSEWAIT_TIME);
/* Make sure we mark the session as closed. In some states we may
* be still trying to send data */
- session_stream_close_notify (&tc->connection);
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ session_transport_closed_notify (&tc->connection);
break;
case TCP_STATE_CLOSED:
+ case TCP_STATE_TIME_WAIT:
break;
default:
TCP_DBG ("reset state: %u", tc->state);
tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_FINWAIT1_TIME);
break;
case TCP_STATE_ESTABLISHED:
- if (!session_tx_fifo_max_dequeue (&tc->connection))
+ /* If closing with unread data, reset the connection */
+ if (transport_max_rx_dequeue (&tc->connection))
+ {
+ tcp_send_reset (tc);
+ tcp_connection_timers_reset (tc);
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLOSEWAIT_TIME);
+ session_transport_closed_notify (&tc->connection);
+ break;
+ }
+ if (!transport_max_tx_dequeue (&tc->connection))
tcp_send_fin (tc);
else
tc->flags |= TCP_CONN_FINPNDG;
tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_FINWAIT1_TIME);
break;
case TCP_STATE_CLOSE_WAIT:
- if (!session_tx_fifo_max_dequeue (&tc->connection))
+ if (!transport_max_tx_dequeue (&tc->connection))
{
tcp_send_fin (tc);
tcp_connection_timers_reset (tc);
}
#endif /* 0 */
-static void
-tcp_cc_init (tcp_connection_t * tc)
-{
- tc->cc_algo = tcp_cc_algo_get (tcp_main.cc_algo);
- tc->cc_algo->init (tc);
-}
-
-void
-tcp_cc_algo_register (tcp_cc_algorithm_type_e type,
- const tcp_cc_algorithm_t * vft)
+/**
+ * Generate random iss as per rfc6528
+ */
+static u32
+tcp_generate_random_iss (tcp_connection_t * tc)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
- vec_validate (tm->cc_algos, type);
+ tcp_main_t *tm = &tcp_main;
+ u64 tmp;
- tm->cc_algos[type] = *vft;
-}
+ if (tc->c_is_ip4)
+ tmp = (u64) tc->c_lcl_ip.ip4.as_u32 << 32 | (u64) tc->c_rmt_ip.ip4.as_u32;
+ else
+ tmp = tc->c_lcl_ip.ip6.as_u64[0] ^ tc->c_lcl_ip.ip6.as_u64[1]
+ ^ tc->c_rmt_ip.ip6.as_u64[0] ^ tc->c_rmt_ip.ip6.as_u64[1];
-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];
+ tmp ^= tm->iss_seed.first | ((u64) tc->c_lcl_port << 16 | tc->c_rmt_port);
+ tmp ^= tm->iss_seed.second;
+ tmp = clib_xxhash (tmp) + clib_cpu_time_now ();
+ return ((tmp >> 32) ^ (tmp & 0xffffffff));
}
-
/**
* Initialize connection send variables.
*/
void
tcp_init_snd_vars (tcp_connection_t * tc)
{
- u32 time_now;
-
/*
* We use the time to randomize iss and for setting up the initial
* timestamp. Make sure it's updated otherwise syn and ack in the
* direction for us.
*/
tcp_set_time_now (tcp_get_worker (vlib_get_thread_index ()));
- time_now = tcp_time_now ();
- tc->iss = random_u32 (&time_now);
+ tc->iss = tcp_generate_random_iss (tc);
tc->snd_una = tc->iss;
tc->snd_nxt = tc->iss + 1;
tc->snd_una_max = tc->snd_nxt;
if (transport_connection_is_tx_paced (&tc->connection)
|| tcp_main.tx_pacing)
tcp_enable_pacing (tc);
+
+ if (tc->flags & TCP_CONN_RATE_SAMPLE)
+ tcp_bt_init (tc);
}
static int
u32 indent = format_get_indent (s);
s = format (s, "%U ", format_tcp_congestion_status, tc);
- s = format (s, "cwnd %u ssthresh %u rtx_bytes %u bytes_acked %u\n",
- tc->cwnd, tc->ssthresh, tc->snd_rxt_bytes, tc->bytes_acked);
- s = format (s, "%Ucc space %u prev_ssthresh %u snd_congestion %u"
- " dupack %u\n", format_white_space, indent,
- tcp_available_cc_snd_space (tc), tc->prev_ssthresh,
- tc->snd_congestion - tc->iss, tc->rcv_dupacks);
- s = format (s, "%Utsecr %u tsecr_last_ack %u limited_transmit %u\n",
- format_white_space, indent, tc->rcv_opts.tsecr,
- tc->tsecr_last_ack, tc->limited_transmit - tc->iss);
+ s = format (s, "algo %s cwnd %u ssthresh %u bytes_acked %u\n",
+ tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked);
+ s = format (s, "%Ucc space %u prev_cwnd %u prev_ssthresh %u rtx_bytes %u\n",
+ format_white_space, indent, tcp_available_cc_snd_space (tc),
+ tc->prev_cwnd, tc->prev_ssthresh, tc->snd_rxt_bytes);
+ s = format (s, "%Usnd_congestion %u dupack %u limited_transmit %u\n",
+ format_white_space, indent, tc->snd_congestion - tc->iss,
+ tc->rcv_dupacks, tc->limited_transmit - tc->iss);
return s;
}
tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale);
s = format (s, "snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs,
tc->snd_wl2 - tc->iss);
- s = format (s, " flight size %u out space %u rcv_wnd_av %u\n",
+ s = format (s, " flight size %u out space %u rcv_wnd_av %u",
tcp_flight_size (tc), tcp_available_output_snd_space (tc),
tcp_rcv_wnd_available (tc));
- s = format (s, " tsval_recent %u tsval_recent_age %u\n", tc->tsval_recent,
+ s = format (s, " tsval_recent %u\n", tc->tsval_recent);
+ s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u",
+ tc->rcv_opts.tsecr, tc->tsecr_last_ack,
tcp_time_now () - tc->tsval_recent_age);
- s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %x",
+ s = format (s, " snd_mss %u\n", tc->snd_mss);
+ s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %.4f",
tc->rto, tc->rto_boff, tc->srtt, tc->mrtt_us * 1000, tc->rttvar,
tc->rtt_ts);
s = format (s, " rtt_seq %u\n", tc->rtt_seq - tc->iss);
format_tcp_listener_session (u8 * s, va_list * args)
{
u32 tci = va_arg (*args, u32);
+ u32 __clib_unused thread_index = va_arg (*args, u32);
+ u32 verbose = va_arg (*args, u32);
tcp_connection_t *tc = tcp_listener_get (tci);
- return format (s, "%U", format_tcp_connection_id, tc);
+ s = format (s, "%-50U", format_tcp_connection_id, tc);
+ if (verbose)
+ s = format (s, "%-15U", format_tcp_state, tc->state);
+ return s;
}
static u8 *
format_tcp_half_open_session (u8 * s, va_list * args)
{
u32 tci = va_arg (*args, u32);
+ u32 __clib_unused thread_index = va_arg (*args, u32);
tcp_connection_t *tc = tcp_half_open_connection_get (tci);
return format (s, "%U", format_tcp_connection_id, tc);
}
tcp_set_time_now (wrk);
tw_timer_expire_timers_16t_2w_512sl (&wrk->timer_wheel, now);
- tcp_do_fastretransmits (wrk);
- tcp_send_acks (wrk);
tcp_flush_frames_to_output (wrk);
}
-static u32
-tcp_session_push_header (transport_connection_t * tconn, vlib_buffer_t * b)
-{
- tcp_connection_t *tc = (tcp_connection_t *) tconn;
- return tcp_push_header (tc, b);
-}
-
static void
tcp_session_flush_data (transport_connection_t * tconn)
{
if (tc->flags & TCP_CONN_PSH_PENDING)
return;
tc->flags |= TCP_CONN_PSH_PENDING;
- tc->psh_seq = tc->snd_una_max + transport_max_tx_dequeue (tconn) - 1;
+ tc->psh_seq = tc->snd_una + transport_max_tx_dequeue (tconn) - 1;
}
/* *INDENT-OFF* */
const static transport_proto_vft_t tcp_proto = {
.enable = vnet_tcp_enable_disable,
- .bind = tcp_session_bind,
- .unbind = tcp_session_unbind,
+ .start_listen = tcp_session_bind,
+ .stop_listen = tcp_session_unbind,
.push_header = tcp_session_push_header,
.get_connection = tcp_session_get_transport,
.get_listener = tcp_session_get_listener,
.get_half_open = tcp_half_open_session_get_transport,
- .open = tcp_session_open,
+ .connect = tcp_session_open,
.close = tcp_session_close,
.cleanup = tcp_session_cleanup,
.send_mss = tcp_session_send_mss,
.update_time = tcp_update_time,
.tx_fifo_offset = tcp_session_tx_fifo_offset,
.flush_data = tcp_session_flush_data,
+ .custom_tx = tcp_session_custom_tx,
.format_connection = format_tcp_session,
.format_listener = format_tcp_listener_session,
.format_half_open = format_tcp_half_open_session,
- .tx_type = TRANSPORT_TX_PEEK,
- .service_type = TRANSPORT_SERVICE_VC,
+ .transport_options = {
+ .tx_type = TRANSPORT_TX_PEEK,
+ .service_type = TRANSPORT_SERVICE_VC,
+ },
};
/* *INDENT-ON* */
if (PREDICT_FALSE (tc == 0))
return;
ASSERT (tc->state == TCP_STATE_SYN_RCVD);
- /* Start cleanup. App wasn't notified yet so use delete notify as
- * opposed to delete to cleanup session layer state. */
- stream_session_delete_notify (&tc->connection);
tc->timers[TCP_TIMER_ESTABLISH] = TCP_TIMER_HANDLE_INVALID;
- tcp_connection_cleanup (tc);
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ tcp_connection_timers_reset (tc);
+ /* Start cleanup. Do NOT delete the session until we do the connection
+ * cleanup. Otherwise, we end up with a dangling session index in the
+ * tcp connection. */
+ tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
}
static void
static void
tcp_timer_waitclose_handler (u32 conn_index)
{
- u32 thread_index = vlib_get_thread_index (), rto;
+ u32 thread_index = vlib_get_thread_index ();
tcp_connection_t *tc;
tc = tcp_connection_get (conn_index, thread_index);
{
case TCP_STATE_CLOSE_WAIT:
tcp_connection_timers_reset (tc);
- session_stream_close_notify (&tc->connection);
+ session_transport_closed_notify (&tc->connection);
if (!(tc->flags & TCP_CONN_FINPNDG))
{
* and switch to LAST_ACK. */
tcp_cong_recovery_off (tc);
/* Make sure we don't try to send unsent data */
- tc->snd_una_max = tc->snd_nxt = tc->snd_una;
+ tc->snd_nxt = tc->snd_una;
tcp_send_fin (tc);
tcp_connection_set_state (tc, TCP_STATE_LAST_ACK);
break;
case TCP_STATE_FIN_WAIT_1:
tcp_connection_timers_reset (tc);
+ session_transport_closed_notify (&tc->connection);
if (tc->flags & TCP_CONN_FINPNDG)
{
- /* If FIN pending send it before closing and wait as long as
- * the rto timeout would wait. Notify session layer that transport
- * is closed. We haven't sent everything but we did try. */
- tcp_cong_recovery_off (tc);
- tcp_send_fin (tc);
- rto = clib_max (tc->rto >> tc->rto_boff, 1);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE,
- clib_min (rto * TCP_TO_TIMER_TICK, TCP_2MSL_TIME));
- session_stream_close_notify (&tc->connection);
+ /* If FIN pending, we haven't sent everything, but we did try.
+ * Notify session layer that transport is closed. */
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ tcp_send_reset (tc);
+ tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
}
else
{
tcp_connection_timers_reset (tc);
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
- session_stream_close_notify (&tc->connection);
+ session_transport_closed_notify (&tc->connection);
break;
default:
tcp_connection_del (tc);
/* *INDENT-ON* */
}
+static void
+tcp_initialize_iss_seed (tcp_main_t * tm)
+{
+ u32 default_seed = random_default_seed ();
+ u64 time_now = clib_cpu_time_now ();
+
+ tm->iss_seed.first = (u64) random_u32 (&default_seed) << 32;
+ tm->iss_seed.second = random_u64 (&time_now);
+}
+
static clib_error_t *
tcp_main_enable (vlib_main_t * vm)
{
for (thread = 0; thread < num_threads; thread++)
{
- vec_validate (tm->wrk_ctx[thread].pending_fast_rxt, 255);
- vec_validate (tm->wrk_ctx[thread].ongoing_fast_rxt, 255);
- vec_validate (tm->wrk_ctx[thread].postponed_fast_rxt, 255);
vec_validate (tm->wrk_ctx[thread].pending_deq_acked, 255);
- vec_validate (tm->wrk_ctx[thread].pending_acks, 255);
vec_validate (tm->wrk_ctx[thread].pending_disconnects, 255);
- vec_reset_length (tm->wrk_ctx[thread].pending_fast_rxt);
- vec_reset_length (tm->wrk_ctx[thread].ongoing_fast_rxt);
- vec_reset_length (tm->wrk_ctx[thread].postponed_fast_rxt);
vec_reset_length (tm->wrk_ctx[thread].pending_deq_acked);
- vec_reset_length (tm->wrk_ctx[thread].pending_acks);
vec_reset_length (tm->wrk_ctx[thread].pending_disconnects);
tm->wrk_ctx[thread].vm = vlib_mains[thread];
}
tcp_initialize_timer_wheels (tm);
+ tcp_initialize_iss_seed (tm);
- tm->bytes_per_buffer = vlib_buffer_free_list_buffer_size
- (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
-
+ tm->bytes_per_buffer = vlib_buffer_get_default_data_size (vm);
+ tm->cc_last_type = TCP_CC_LAST;
return error;
}
FIB_PROTOCOL_IP6, tcp6_output_node.index);
tcp_api_reference ();
+ tm->cc_algo_by_name = hash_create_string (0, sizeof (uword));
tm->tx_pacing = 1;
tm->cc_algo = TCP_CC_NEWRENO;
+ tm->default_mtu = 1460;
+ tm->initial_cwnd_multiplier = 0;
return 0;
}
unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
{
uword *result = va_arg (*va, uword *);
+ tcp_main_t *tm = &tcp_main;
+ char *cc_algo_name;
+ u8 found = 0;
+ uword *p;
- if (unformat (input, "newreno"))
- *result = TCP_CC_NEWRENO;
- else if (unformat (input, "cubic"))
- *result = TCP_CC_CUBIC;
- else
- return 0;
+ if (unformat (input, "%s", &cc_algo_name)
+ && ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
+ {
+ *result = *p;
+ found = 1;
+ }
- return 1;
+ vec_free (cc_algo_name);
+ return found;
}
uword
else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
&tm->max_rx_fifo))
;
+ else if (unformat (input, "mtu %d", &tm->default_mtu))
+ ;
+ else if (unformat (input, "initial-cwnd-multiplier %d",
+ &tm->initial_cwnd_multiplier))
+ ;
else if (unformat (input, "no-tx-pacing"))
tm->tx_pacing = 0;
else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
vnet_main_t *vnm = vnet_get_main ();
u32 start_host_byte_order, end_host_byte_order;
fib_prefix_t prefix;
- vnet_sw_interface_t *si;
fib_node_index_t fei;
u32 fib_index = 0;
u32 sw_if_index;
int rv;
- int vnet_proxy_arp_add_del (ip4_address_t * lo_addr,
- ip4_address_t * hi_addr, u32 fib_index,
- int is_del);
clib_memset (&prefix, 0, sizeof (prefix));
sw_if_index = fib_entry_get_resolving_interface (fei);
- /* Enable proxy arp on the interface */
- si = vnet_get_sw_interface (vnm, sw_if_index);
- si->flags |= VNET_SW_INTERFACE_FLAG_PROXY_ARP;
-
/* Configure proxy arp across the range */
rv = vnet_proxy_arp_add_del (start, end, fib_index, 0 /* is_del */ );
+ if (rv)
+ return rv;
+
+ rv = vnet_proxy_arp_enable_disable (vnm, sw_if_index, 1);
+
if (rv)
return rv;
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