*/
#include <vnet/tcp/tcp.h>
+#include <vnet/tcp/tcp_inlines.h>
#include <vnet/session/session.h>
#include <vnet/fib/fib.h>
#include <vnet/dpo/load_balance.h>
-#include <vnet/dpo/receive_dpo.h>
-#include <vnet/ip/ip6_neighbor.h>
#include <math.h>
tcp_main_t tcp_main;
sizeof (args));
}
+static void
+tcp_cc_init (tcp_connection_t * tc)
+{
+ 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)
{
listener->c_s_index = session_index;
listener->c_fib_index = lcl->fib_index;
listener->state = TCP_STATE_LISTEN;
+ listener->cc_algo = tcp_cc_algo_get (tcp_cfg.cc_algo);
tcp_connection_timers_init (listener);
- TCP_EVT_DBG (TCP_EVT_BIND, listener);
+ TCP_EVT (TCP_EVT_BIND, listener);
return listener->c_c_index;
}
tc = pool_elt_at_index (tm->listener_pool, listener_index);
- TCP_EVT_DBG (TCP_EVT_UNBIND, tc);
+ TCP_EVT (TCP_EVT_UNBIND, tc);
/* Poison the entry */
if (CLIB_DEBUG > 0)
*
*/
static void
-tcp_half_open_connection_del (tcp_connection_t * tc)
+tcp_half_open_connection_free (tcp_connection_t * tc)
{
tcp_main_t *tm = vnet_get_tcp_main ();
clib_spinlock_lock_if_init (&tm->half_open_lock);
- pool_put_index (tm->half_open_connections, tc->c_c_index);
if (CLIB_DEBUG)
clib_memset (tc, 0xFA, sizeof (*tc));
+ pool_put (tm->half_open_connections, tc);
clib_spinlock_unlock_if_init (&tm->half_open_lock);
}
int
tcp_half_open_connection_cleanup (tcp_connection_t * tc)
{
+ tcp_worker_ctx_t *wrk;
+
/* Make sure this is the owning thread */
if (tc->c_thread_index != vlib_get_thread_index ())
return 1;
- tcp_timer_reset (tc, TCP_TIMER_ESTABLISH_AO);
- tcp_timer_reset (tc, TCP_TIMER_RETRANSMIT_SYN);
- tcp_half_open_connection_del (tc);
+
+ session_half_open_delete_notify (TRANSPORT_PROTO_TCP, tc->c_s_ho_handle);
+ wrk = tcp_get_worker (tc->c_thread_index);
+ tcp_timer_reset (&wrk->timer_wheel, tc, TCP_TIMER_RETRANSMIT_SYN);
+ tcp_half_open_connection_free (tc);
return 0;
}
void
tcp_connection_cleanup (tcp_connection_t * tc)
{
- tcp_main_t *tm = &tcp_main;
+ TCP_EVT (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->cfg_flags & TCP_CFG_F_NO_ENDPOINT))
+ transport_endpoint_cleanup (TRANSPORT_PROTO_TCP, &tc->c_lcl_ip,
+ tc->c_lcl_port);
/* Check if connection is not yet fully established */
if (tc->state == TCP_STATE_SYN_SENT)
}
else
{
- int thread_index = tc->c_thread_index;
-
/* Make sure all timers are cleared */
tcp_connection_timers_reset (tc);
if (!tc->c_is_ip4 && ip6_address_is_link_local_unicast (&tc->c_rmt_ip6))
tcp_add_del_adjacency (tc, 0);
- /* Poison the entry */
- if (CLIB_DEBUG > 0)
- clib_memset (tc, 0xFA, sizeof (*tc));
- pool_put (tm->connections[thread_index], tc);
+ tcp_cc_cleanup (tc);
+ vec_free (tc->snd_sacks);
+ vec_free (tc->snd_sacks_fl);
+ vec_free (tc->rcv_opts.sacks);
+ pool_free (tc->sack_sb.holes);
+
+ if (tc->cfg_flags & TCP_CFG_F_RATE_SAMPLE)
+ tcp_bt_cleanup (tc);
+
+ tcp_connection_free (tc);
}
}
void
tcp_connection_del (tcp_connection_t * tc)
{
- TCP_EVT_DBG (TCP_EVT_DELETE, tc);
session_transport_delete_notify (&tc->connection);
tcp_connection_cleanup (tc);
}
tcp_connection_t *
tcp_connection_alloc (u8 thread_index)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
+ tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
tcp_connection_t *tc;
- pool_get (tm->connections[thread_index], tc);
+ pool_get (wrk->connections, tc);
clib_memset (tc, 0, sizeof (*tc));
- tc->c_c_index = tc - tm->connections[thread_index];
+ tc->c_c_index = tc - wrk->connections;
tc->c_thread_index = thread_index;
return tc;
}
-void
-tcp_connection_free (tcp_connection_t * tc)
+tcp_connection_t *
+tcp_connection_alloc_w_base (u8 thread_index, tcp_connection_t * base)
{
- tcp_main_t *tm = &tcp_main;
- pool_put (tm->connections[tc->c_thread_index], tc);
- if (CLIB_DEBUG > 0)
- clib_memset (tc, 0xFA, sizeof (*tc));
+ tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
+ tcp_connection_t *tc;
+
+ pool_get (wrk->connections, tc);
+ clib_memcpy_fast (tc, base, sizeof (*tc));
+ tc->c_c_index = tc - wrk->connections;
+ tc->c_thread_index = thread_index;
+ return tc;
}
-/** Notify session that connection has been reset.
- *
- * Switch state to closed and wait for session to call cleanup.
- */
void
-tcp_connection_reset (tcp_connection_t * tc)
+tcp_connection_free (tcp_connection_t * tc)
{
- TCP_EVT_DBG (TCP_EVT_RST_RCVD, tc);
- switch (tc->state)
+ tcp_worker_ctx_t *wrk = tcp_get_worker (tc->c_thread_index);
+ if (CLIB_DEBUG)
{
- case TCP_STATE_SYN_RCVD:
- /* Cleanup everything. App wasn't notified yet */
- session_transport_delete_notify (&tc->connection);
- tcp_connection_cleanup (tc);
- break;
- case TCP_STATE_SYN_SENT:
- session_stream_connect_notify (&tc->connection, 1 /* fail */ );
- tcp_connection_cleanup (tc);
- break;
- case TCP_STATE_ESTABLISHED:
- tcp_connection_timers_reset (tc);
- /* 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);
- session_transport_reset_notify (&tc->connection);
- tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- break;
- case TCP_STATE_CLOSE_WAIT:
- case TCP_STATE_FIN_WAIT_1:
- case TCP_STATE_FIN_WAIT_2:
- case TCP_STATE_CLOSING:
- case TCP_STATE_LAST_ACK:
- tcp_connection_timers_reset (tc);
- 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_transport_closed_notify (&tc->connection);
- tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- break;
- case TCP_STATE_CLOSED:
- case TCP_STATE_TIME_WAIT:
- break;
- default:
- TCP_DBG ("reset state: %u", tc->state);
+ clib_memset (tc, 0xFA, sizeof (*tc));
+ pool_put (wrk->connections, tc);
+ return;
}
+ pool_put (wrk->connections, tc);
+}
+
+void
+tcp_program_cleanup (tcp_worker_ctx_t * wrk, tcp_connection_t * tc)
+{
+ tcp_cleanup_req_t *req;
+ clib_time_type_t now;
+
+ now = tcp_time_now_us (tc->c_thread_index);
+ clib_fifo_add2 (wrk->pending_cleanups, req);
+ req->connection_index = tc->c_c_index;
+ req->free_time = now + tcp_cfg.cleanup_time;
}
/**
void
tcp_connection_close (tcp_connection_t * tc)
{
- TCP_EVT_DBG (TCP_EVT_CLOSE, tc);
+ tcp_worker_ctx_t *wrk = tcp_get_worker (tc->c_thread_index);
+
+ TCP_EVT (TCP_EVT_CLOSE, tc);
/* Send/Program FIN if needed and switch state */
switch (tc->state)
tcp_connection_timers_reset (tc);
tcp_send_fin (tc);
tcp_connection_set_state (tc, TCP_STATE_FIN_WAIT_1);
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_FINWAIT1_TIME);
+ tcp_timer_update (&wrk->timer_wheel, tc, TCP_TIMER_WAITCLOSE,
+ tcp_cfg.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);
+ session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (tcp_get_worker (tc->c_thread_index), tc);
+ tcp_worker_stats_inc (wrk, rst_unread, 1);
+ break;
+ }
+ if (!transport_max_tx_dequeue (&tc->connection))
tcp_send_fin (tc);
else
tc->flags |= TCP_CONN_FINPNDG;
/* Set a timer in case the peer stops responding. Otherwise the
* connection will be stuck here forever. */
ASSERT (tc->timers[TCP_TIMER_WAITCLOSE] == TCP_TIMER_HANDLE_INVALID);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_FINWAIT1_TIME);
+ tcp_timer_set (&wrk->timer_wheel, tc, TCP_TIMER_WAITCLOSE,
+ tcp_cfg.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);
tcp_connection_set_state (tc, TCP_STATE_LAST_ACK);
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
+ tcp_timer_update (&wrk->timer_wheel, tc, TCP_TIMER_WAITCLOSE,
+ tcp_cfg.lastack_time);
}
else
tc->flags |= TCP_CONN_FINPNDG;
break;
case TCP_STATE_FIN_WAIT_1:
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
+ tcp_timer_update (&wrk->timer_wheel, tc, TCP_TIMER_WAITCLOSE,
+ tcp_cfg.finwait1_time);
break;
case TCP_STATE_CLOSED:
- tcp_connection_timers_reset (tc);
- /* Delete connection but instead of doing it now wait until next
- * dispatch cycle to give the session layer a chance to clear
- * unhandled events */
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
+ /* Cleanup should've been programmed already */
break;
default:
TCP_DBG ("state: %u", tc->state);
{
tcp_connection_t *tc;
tc = tcp_connection_get (conn_index, thread_index);
+ if (!tc)
+ return;
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
tcp_connection_cleanup (tc);
}
+static void
+tcp_session_cleanup_ho (u32 conn_index)
+{
+ tcp_worker_ctx_t *wrk;
+ tcp_connection_t *tc;
+
+ tc = tcp_half_open_connection_get (conn_index);
+ wrk = tcp_get_worker (tc->c_thread_index);
+ tcp_timer_reset (&wrk->timer_wheel, tc, TCP_TIMER_RETRANSMIT_SYN);
+ tcp_half_open_connection_free (tc);
+}
+
+static void
+tcp_session_reset (u32 conn_index, u32 thread_index)
+{
+ tcp_connection_t *tc;
+ tc = tcp_connection_get (conn_index, thread_index);
+ tcp_send_reset (tc);
+ tcp_connection_timers_reset (tc);
+ tcp_cong_recovery_off (tc);
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (tcp_get_worker (thread_index), tc);
+}
+
/**
* Initialize all connection timers as invalid
*/
void
tcp_connection_timers_reset (tcp_connection_t * tc)
{
+ tcp_worker_ctx_t *wrk = tcp_get_worker (tc->c_thread_index);
int i;
+
for (i = 0; i < TCP_N_TIMERS; i++)
- {
- tcp_timer_reset (tc, i);
- }
+ tcp_timer_reset (&wrk->timer_wheel, tc, i);
}
#if 0
}
#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)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- vec_validate (tm->cc_algos, type);
-
- tm->cc_algos[type] = *vft;
-}
-
-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];
-}
-
/**
* Generate random iss as per rfc6528
*/
return ((tmp >> 32) ^ (tmp & 0xffffffff));
}
+/**
+ * Initialize max segment size we're able to process.
+ *
+ * The value is constrained by the output interface's MTU and by the size
+ * of the IP and TCP headers (see RFC6691). It is also what we advertise
+ * to our peer.
+ */
+static void
+tcp_init_rcv_mss (tcp_connection_t * tc)
+{
+ u8 ip_hdr_len;
+
+ /* Already provided at connection init time */
+ if (tc->mss)
+ return;
+
+ ip_hdr_len = tc->c_is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t);
+ tc->mss = tcp_cfg.default_mtu - sizeof (tcp_header_t) - ip_hdr_len;
+}
+
+static void
+tcp_init_mss (tcp_connection_t * tc)
+{
+ u16 default_min_mss = 536;
+
+ tcp_init_rcv_mss (tc);
+
+ /* TODO consider PMTU discovery */
+ tc->snd_mss = clib_min (tc->rcv_opts.mss, tc->mss);
+
+ if (tc->snd_mss < 45)
+ {
+ /* Assume that at least the min default mss works */
+ tc->snd_mss = default_min_mss;
+ tc->rcv_opts.mss = default_min_mss;
+ }
+
+ /* We should have enough space for 40 bytes of options */
+ ASSERT (tc->snd_mss > 45);
+
+ /* If we use timestamp option, account for it and make sure
+ * the options are 4-byte aligned */
+ if (tcp_opts_tstamp (&tc->rcv_opts))
+ tc->snd_mss -= TCP_OPTION_LEN_TIMESTAMP + 2 /* alignment */;
+}
+
/**
* Initialize connection send variables.
*/
* handshake may make it look as if time has flown in the opposite
* direction for us.
*/
- tcp_set_time_now (tcp_get_worker (vlib_get_thread_index ()));
+ tcp_update_time_now (tcp_get_worker (vlib_get_thread_index ()));
+ tcp_init_rcv_mss (tc);
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;
- tc->srtt = 0;
+ tc->srtt = 0.1 * THZ; /* 100 ms */
+
+ if (!tcp_cfg.csum_offload)
+ tc->cfg_flags |= TCP_CFG_F_NO_CSUM_OFFLOAD;
}
void
tcp_enable_pacing (tcp_connection_t * tc)
{
- u32 initial_bucket, byte_rate;
- initial_bucket = 16 * tc->snd_mss;
- byte_rate = 2 << 16;
- transport_connection_tx_pacer_init (&tc->connection, byte_rate,
- initial_bucket);
+ u32 byte_rate;
+ byte_rate = tc->cwnd / (tc->srtt * TCP_TICK);
+ transport_connection_tx_pacer_init (&tc->connection, byte_rate, tc->cwnd);
tc->mrtt_us = (u32) ~ 0;
}
tcp_connection_timers_init (tc);
tcp_init_mss (tc);
scoreboard_init (&tc->sack_sb);
- tcp_cc_init (tc);
if (tc->state == TCP_STATE_SYN_RCVD)
tcp_init_snd_vars (tc);
+ tcp_cc_init (tc);
+
if (!tc->c_is_ip4 && ip6_address_is_link_local_unicast (&tc->c_rmt_ip6))
tcp_add_del_adjacency (tc, 1);
/* tcp_connection_fib_attach (tc); */
if (transport_connection_is_tx_paced (&tc->connection)
- || tcp_main.tx_pacing)
+ || tcp_cfg.enable_tx_pacing)
tcp_enable_pacing (tc);
+
+ if (tc->cfg_flags & TCP_CFG_F_RATE_SAMPLE)
+ tcp_bt_init (tc);
+
+ if (!tcp_cfg.allow_tso)
+ tc->cfg_flags |= TCP_CFG_F_NO_TSO;
+
+ tc->start_ts = tcp_time_now_us (tc->c_thread_index);
}
static int
int index, port;
if (is_ip4)
{
- index = tm->last_v4_address_rotor++;
- if (tm->last_v4_address_rotor >= vec_len (tm->ip4_src_addresses))
- tm->last_v4_address_rotor = 0;
- lcl_addr->ip4.as_u32 = tm->ip4_src_addresses[index].as_u32;
+ index = tm->last_v4_addr_rotor++;
+ if (tm->last_v4_addr_rotor >= vec_len (tcp_cfg.ip4_src_addrs))
+ tm->last_v4_addr_rotor = 0;
+ lcl_addr->ip4.as_u32 = tcp_cfg.ip4_src_addrs[index].as_u32;
}
else
{
- index = tm->last_v6_address_rotor++;
- if (tm->last_v6_address_rotor >= vec_len (tm->ip6_src_addresses))
- tm->last_v6_address_rotor = 0;
- clib_memcpy_fast (&lcl_addr->ip6, &tm->ip6_src_addresses[index],
+ index = tm->last_v6_addr_rotor++;
+ if (tm->last_v6_addr_rotor >= vec_len (tcp_cfg.ip6_src_addrs))
+ tm->last_v6_addr_rotor = 0;
+ clib_memcpy_fast (&lcl_addr->ip6, &tcp_cfg.ip6_src_addrs[index],
sizeof (ip6_address_t));
}
port = transport_alloc_local_port (TRANSPORT_PROTO_TCP, lcl_addr);
if (port < 1)
- {
- clib_warning ("Failed to allocate src port");
- return -1;
- }
+ return SESSION_E_NOPORT;
*lcl_port = port;
return 0;
}
/*
* Allocate local endpoint
*/
- if ((rmt->is_ip4 && vec_len (tm->ip4_src_addresses))
- || (!rmt->is_ip4 && vec_len (tm->ip6_src_addresses)))
+ if ((rmt->is_ip4 && vec_len (tcp_cfg.ip4_src_addrs))
+ || (!rmt->is_ip4 && vec_len (tcp_cfg.ip6_src_addrs)))
rv = tcp_alloc_custom_local_endpoint (tm, &lcl_addr, &lcl_port,
rmt->is_ip4);
else
rmt, &lcl_addr, &lcl_port);
if (rv)
- return -1;
+ {
+ if (rv != SESSION_E_PORTINUSE)
+ return rv;
+
+ if (session_lookup_connection (rmt->fib_index, &lcl_addr, &rmt->ip,
+ lcl_port, rmt->port, TRANSPORT_PROTO_UDP,
+ rmt->is_ip4))
+ return SESSION_E_PORTINUSE;
+
+ /* 5-tuple is available so increase lcl endpoint refcount and proceed
+ * with connection allocation */
+ transport_share_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
+ lcl_port);
+ }
/*
* Create connection and send SYN
tc->c_is_ip4 = rmt->is_ip4;
tc->c_proto = TRANSPORT_PROTO_TCP;
tc->c_fib_index = rmt->fib_index;
+ tc->cc_algo = tcp_cc_algo_get (tcp_cfg.cc_algo);
/* The other connection vars will be initialized after SYN ACK */
tcp_connection_timers_init (tc);
+ tc->mss = rmt->mss;
- TCP_EVT_DBG (TCP_EVT_OPEN, tc);
+ TCP_EVT (TCP_EVT_OPEN, tc);
tc->state = TCP_STATE_SYN_SENT;
tcp_init_snd_vars (tc);
tcp_send_syn (tc);
return tc->c_c_index;
}
-const char *tcp_dbg_evt_str[] = {
-#define _(sym, str) str,
- foreach_tcp_dbg_evt
-#undef _
-};
-
-const char *tcp_fsm_states[] = {
-#define _(sym, str) str,
- foreach_tcp_fsm_state
-#undef _
-};
-
-u8 *
-format_tcp_state (u8 * s, va_list * args)
-{
- u32 state = va_arg (*args, u32);
-
- if (state < TCP_N_STATES)
- s = format (s, "%s", tcp_fsm_states[state]);
- else
- s = format (s, "UNKNOWN (%d (0x%x))", state, state);
- return s;
-}
-
-const char *tcp_connection_flags_str[] = {
-#define _(sym, str) str,
- foreach_tcp_connection_flag
-#undef _
-};
-
-static u8 *
-format_tcp_connection_flags (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- int i, last = -1;
-
- for (i = 0; i < TCP_CONN_N_FLAG_BITS; i++)
- if (tc->flags & (1 << i))
- last = i;
- for (i = 0; i < last; i++)
- {
- if (tc->flags & (1 << i))
- s = format (s, "%s, ", tcp_connection_flags_str[i]);
- }
- if (last >= 0)
- s = format (s, "%s", tcp_connection_flags_str[last]);
- return s;
-}
-
-const char *tcp_conn_timers[] = {
-#define _(sym, str) str,
- foreach_tcp_timer
-#undef _
-};
-
-static u8 *
-format_tcp_timers (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- int i, last = -1;
-
- for (i = 0; i < TCP_N_TIMERS; i++)
- if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
- last = i;
-
- for (i = 0; i < last; i++)
- {
- if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
- s = format (s, "%s,", tcp_conn_timers[i]);
- }
-
- if (last >= 0)
- s = format (s, "%s", tcp_conn_timers[i]);
-
- return s;
-}
-
-static u8 *
-format_tcp_congestion_status (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- if (tcp_in_recovery (tc))
- s = format (s, "recovery");
- else if (tcp_in_fastrecovery (tc))
- s = format (s, "fastrecovery");
- else
- s = format (s, "none");
- return s;
-}
-
-static i32
-tcp_rcv_wnd_available (tcp_connection_t * tc)
-{
- return (i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las);
-}
-
-static u8 *
-format_tcp_congestion (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- 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);
- return s;
-}
-
-static u8 *
-format_tcp_vars (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- s = format (s, " index: %u flags: %U timers: %U\n", tc->c_c_index,
- format_tcp_connection_flags, tc, format_tcp_timers, tc);
- s = format (s, " snd_una %u snd_nxt %u snd_una_max %u",
- tc->snd_una - tc->iss, tc->snd_nxt - tc->iss,
- tc->snd_una_max - tc->iss);
- s = format (s, " rcv_nxt %u rcv_las %u\n",
- tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs);
- s = format (s, " snd_wnd %u rcv_wnd %u rcv_wscale %u ",
- 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",
- 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,
- tcp_time_now () - tc->tsval_recent_age);
- s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %x",
- 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);
- s = format (s, " cong: %U", format_tcp_congestion, tc);
-
- if (tc->state >= TCP_STATE_ESTABLISHED)
- {
- s = format (s, " sboard: %U\n", format_tcp_scoreboard, &tc->sack_sb,
- tc);
- }
- if (vec_len (tc->snd_sacks))
- s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc);
-
- return s;
-}
-
-static u8 *
-format_tcp_connection_id (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- if (!tc)
- return s;
- if (tc->c_is_ip4)
- {
- s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
- tc->c_s_index, "T", format_ip4_address, &tc->c_lcl_ip4,
- clib_net_to_host_u16 (tc->c_lcl_port), format_ip4_address,
- &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port));
- }
- else
- {
- s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
- tc->c_s_index, "T", format_ip6_address, &tc->c_lcl_ip6,
- clib_net_to_host_u16 (tc->c_lcl_port), format_ip6_address,
- &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port));
- }
-
- return s;
-}
-
-u8 *
-format_tcp_connection (u8 * s, va_list * args)
-{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- u32 verbose = va_arg (*args, u32);
-
- if (!tc)
- return s;
- s = format (s, "%-50U", format_tcp_connection_id, tc);
- if (verbose)
- {
- s = format (s, "%-15U", format_tcp_state, tc->state);
- if (verbose > 1)
- s = format (s, "\n%U", format_tcp_vars, tc);
- }
-
- return s;
-}
-
static u8 *
format_tcp_session (u8 * s, va_list * args)
{
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);
- s = format (s, "%-50U", format_tcp_connection_id, tc);
+ s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tcp_connection_id, tc);
if (verbose)
- s = format (s, "%-15U", format_tcp_state, tc->state);
+ s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tcp_state,
+ tc->state);
return s;
}
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);
}
-u8 *
-format_tcp_sacks (u8 * s, va_list * args)
+static transport_connection_t *
+tcp_session_get_transport (u32 conn_index, u32 thread_index)
{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- sack_block_t *sacks = tc->snd_sacks;
- sack_block_t *block;
- int i, len = 0;
+ tcp_connection_t *tc = tcp_connection_get (conn_index, thread_index);
+ if (PREDICT_FALSE (!tc))
+ return 0;
+ return &tc->connection;
+}
- len = vec_len (sacks);
- for (i = 0; i < len - 1; i++)
- {
- block = &sacks[i];
- s = format (s, " start %u end %u\n", block->start - tc->irs,
- block->end - tc->irs);
- }
- if (len)
- {
- block = &sacks[len - 1];
- s = format (s, " start %u end %u", block->start - tc->irs,
- block->end - tc->irs);
- }
- return s;
+static transport_connection_t *
+tcp_half_open_session_get_transport (u32 conn_index)
+{
+ tcp_connection_t *tc = tcp_half_open_connection_get (conn_index);
+ return &tc->connection;
}
-u8 *
-format_tcp_rcv_sacks (u8 * s, va_list * args)
+static int
+tcp_set_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr)
{
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- sack_block_t *sacks = tc->rcv_opts.sacks;
- sack_block_t *block;
- int i, len = 0;
+ int rv = 0;
- len = vec_len (sacks);
- for (i = 0; i < len - 1; i++)
- {
- block = &sacks[i];
- s = format (s, " start %u end %u\n", block->start - tc->iss,
- block->end - tc->iss);
- }
- if (len)
+ switch (attr->type)
{
- block = &sacks[len - 1];
- s = format (s, " start %u end %u", block->start - tc->iss,
- block->end - tc->iss);
+ case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE:
+ tc->next_node_index = attr->next_output_node & 0xffffffff;
+ tc->next_node_opaque = attr->next_output_node >> 32;
+ break;
+ case TRANSPORT_ENDPT_ATTR_MSS:
+ tc->mss = attr->mss;
+ tc->snd_mss = clib_min (tc->snd_mss, tc->mss);
+ break;
+ case TRANSPORT_ENDPT_ATTR_FLAGS:
+ if (attr->flags & TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD)
+ tc->cfg_flags |= TCP_CFG_F_NO_CSUM_OFFLOAD;
+ else
+ tc->cfg_flags &= ~TCP_CFG_F_NO_CSUM_OFFLOAD;
+ if (attr->flags & TRANSPORT_ENDPT_ATTR_F_GSO)
+ {
+ if (!(tc->cfg_flags & TCP_CFG_F_TSO))
+ tcp_check_gso (tc);
+ tc->cfg_flags &= ~TCP_CFG_F_NO_TSO;
+ }
+ else
+ {
+ tc->cfg_flags |= TCP_CFG_F_NO_TSO;
+ tc->cfg_flags &= ~TCP_CFG_F_TSO;
+ }
+ break;
+ case TRANSPORT_ENDPT_ATTR_CC_ALGO:
+ if (tc->cc_algo == tcp_cc_algo_get (attr->cc_algo))
+ break;
+ tcp_cc_cleanup (tc);
+ tc->cc_algo = tcp_cc_algo_get (attr->cc_algo);
+ tcp_cc_init (tc);
+ break;
+ default:
+ rv = -1;
+ break;
}
- return s;
-}
-static u8 *
-format_tcp_sack_hole (u8 * s, va_list * args)
-{
- sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *);
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- if (tc)
- s = format (s, " [%u, %u]", hole->start - tc->iss, hole->end - tc->iss);
- else
- s = format (s, " [%u, %u]", hole->start, hole->end);
- return s;
+ return rv;
}
-u8 *
-format_tcp_scoreboard (u8 * s, va_list * args)
+static int
+tcp_get_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr)
{
- sack_scoreboard_t *sb = va_arg (*args, sack_scoreboard_t *);
- tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
- sack_scoreboard_hole_t *hole;
- u32 indent = format_get_indent (s);
-
- s = format (s, "sacked_bytes %u last_sacked_bytes %u lost_bytes %u\n",
- sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes);
- s = format (s, "%Ulast_bytes_delivered %u high_sacked %u snd_una_adv %u\n",
- format_white_space, indent, sb->last_bytes_delivered,
- sb->high_sacked - tc->iss, sb->snd_una_adv);
- s = format (s, "%Ucur_rxt_hole %u high_rxt %u rescue_rxt %u",
- format_white_space, indent, sb->cur_rxt_hole,
- sb->high_rxt - tc->iss, sb->rescue_rxt - tc->iss);
+ int rv = 0;
+ u64 non;
- hole = scoreboard_first_hole (sb);
- if (hole)
- s = format (s, "\n%Uhead %u tail %u %u holes:\n%U", format_white_space,
- indent, sb->head, sb->tail, pool_elts (sb->holes),
- format_white_space, indent);
-
- while (hole)
+ switch (attr->type)
{
- s = format (s, "%U", format_tcp_sack_hole, hole, tc);
- hole = scoreboard_next_hole (sb, hole);
+ case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE:
+ non = (u64) tc->next_node_opaque << 32 | tc->next_node_index;
+ attr->next_output_node = non;
+ break;
+ case TRANSPORT_ENDPT_ATTR_MSS:
+ attr->mss = tc->snd_mss;
+ break;
+ case TRANSPORT_ENDPT_ATTR_FLAGS:
+ attr->flags = 0;
+ if (!(tc->cfg_flags & TCP_CFG_F_NO_CSUM_OFFLOAD))
+ attr->flags |= TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD;
+ if (tc->cfg_flags & TCP_CFG_F_TSO)
+ attr->flags |= TRANSPORT_ENDPT_ATTR_F_GSO;
+ break;
+ case TRANSPORT_ENDPT_ATTR_CC_ALGO:
+ attr->cc_algo = tc->cc_algo - tcp_main.cc_algos;
+ break;
+ default:
+ rv = -1;
+ break;
}
- return s;
+ return rv;
}
-static transport_connection_t *
-tcp_session_get_transport (u32 conn_index, u32 thread_index)
+static int
+tcp_session_attribute (u32 conn_index, u32 thread_index, u8 is_get,
+ transport_endpt_attr_t *attr)
{
tcp_connection_t *tc = tcp_connection_get (conn_index, thread_index);
- return &tc->connection;
-}
-static transport_connection_t *
-tcp_half_open_session_get_transport (u32 conn_index)
-{
- tcp_connection_t *tc = tcp_half_open_connection_get (conn_index);
- return &tc->connection;
+ if (PREDICT_FALSE (!tc))
+ return -1;
+
+ if (is_get)
+ return tcp_get_attribute (tc, attr);
+ else
+ return tcp_set_attribute (tc, attr);
}
-/**
- * Compute maximum segment size for session layer.
- *
- * Since the result needs to be the actual data length, it first computes
- * the tcp options to be used in the next burst and subtracts their
- * length from the connection's snd_mss.
- */
static u16
-tcp_session_send_mss (transport_connection_t * trans_conn)
+tcp_session_cal_goal_size (tcp_connection_t * tc)
{
- tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
+ u16 goal_size = tc->snd_mss;
- /* Ensure snd_mss does accurately reflect the amount of data we can push
- * in a segment. This also makes sure that options are updated according to
- * the current state of the connection. */
- tcp_update_burst_snd_vars (tc);
+ goal_size = tcp_cfg.max_gso_size - tc->snd_mss % tcp_cfg.max_gso_size;
+ goal_size = clib_min (goal_size, tc->snd_wnd / 2);
- return tc->snd_mss;
+ return goal_size > tc->snd_mss ? goal_size : tc->snd_mss;
}
always_inline u32
static inline u32
tcp_snd_space_inline (tcp_connection_t * tc)
{
- int snd_space, snt_limited;
+ int snd_space;
- if (PREDICT_FALSE (tcp_in_fastrecovery (tc)
+ /* Fast path is disabled when recovery is on. @ref tcp_session_custom_tx
+ * controls both retransmits and the sending of new data while congested
+ */
+ if (PREDICT_FALSE (tcp_in_cong_recovery (tc)
|| tc->state == TCP_STATE_CLOSED))
return 0;
snd_space = tcp_available_output_snd_space (tc);
- /* If we haven't gotten dupacks or if we did and have gotten sacked
- * bytes then we can still send as per Limited Transmit (RFC3042) */
- if (PREDICT_FALSE (tc->rcv_dupacks != 0
- && (tcp_opts_sack_permitted (tc)
- && tc->sack_sb.last_sacked_bytes == 0)))
+ /* If we got dupacks or sacked bytes but we're not yet in recovery, try
+ * to force the peer to send enough dupacks to start retransmitting as
+ * per Limited Transmit (RFC3042)
+ */
+ if (PREDICT_FALSE (tc->rcv_dupacks || tc->sack_sb.sacked_bytes))
{
- if (tc->rcv_dupacks == 1 && tc->limited_transmit != tc->snd_nxt)
+ int snt_limited, n_pkts;
+
+ n_pkts = tcp_opts_sack_permitted (&tc->rcv_opts)
+ ? tc->sack_sb.reorder - 1 : 2;
+
+ if ((seq_lt (tc->limited_transmit, tc->snd_nxt - n_pkts * tc->snd_mss)
+ || seq_gt (tc->limited_transmit, tc->snd_nxt)))
tc->limited_transmit = tc->snd_nxt;
+
ASSERT (seq_leq (tc->limited_transmit, tc->snd_nxt));
snt_limited = tc->snd_nxt - tc->limited_transmit;
- snd_space = clib_max (2 * tc->snd_mss - snt_limited, 0);
+ snd_space = clib_max (n_pkts * tc->snd_mss - snt_limited, 0);
}
return tcp_round_snd_space (tc, snd_space);
}
return tcp_snd_space_inline (tc);
}
-static u32
-tcp_session_send_space (transport_connection_t * trans_conn)
+static int
+tcp_session_send_params (transport_connection_t * trans_conn,
+ transport_send_params_t * sp)
{
tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
- return clib_min (tcp_snd_space_inline (tc),
- tc->snd_wnd - (tc->snd_nxt - tc->snd_una));
-}
-static u32
-tcp_session_tx_fifo_offset (transport_connection_t * trans_conn)
-{
- tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
+ /* Ensure snd_mss does accurately reflect the amount of data we can push
+ * in a segment. This also makes sure that options are updated according to
+ * the current state of the connection. */
+ tcp_update_burst_snd_vars (tc);
- ASSERT (seq_geq (tc->snd_nxt, tc->snd_una));
+ if (PREDICT_FALSE (tc->cfg_flags & TCP_CFG_F_TSO))
+ sp->snd_mss = tcp_session_cal_goal_size (tc);
+ else
+ sp->snd_mss = tc->snd_mss;
- /* This still works if fast retransmit is on */
- return (tc->snd_nxt - tc->snd_una);
-}
+ sp->snd_space = clib_min (tcp_snd_space_inline (tc),
+ tc->snd_wnd - (tc->snd_nxt - tc->snd_una));
-static void
-tcp_update_time (f64 now, u8 thread_index)
-{
- tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
+ ASSERT (seq_geq (tc->snd_nxt, tc->snd_una));
+ /* This still works if fast retransmit is on */
+ sp->tx_offset = tc->snd_nxt - tc->snd_una;
- 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);
-}
+ sp->flags = sp->snd_space ? 0 : TRANSPORT_SND_F_DESCHED;
-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);
+ return 0;
}
static void
-tcp_session_flush_data (transport_connection_t * tconn)
-{
- tcp_connection_t *tc = (tcp_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;
-}
-
-/* *INDENT-OFF* */
-const static transport_proto_vft_t tcp_proto = {
- .enable = vnet_tcp_enable_disable,
- .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,
- .connect = tcp_session_open,
- .close = tcp_session_close,
- .cleanup = tcp_session_cleanup,
- .send_mss = tcp_session_send_mss,
- .send_space = tcp_session_send_space,
- .update_time = tcp_update_time,
- .tx_fifo_offset = tcp_session_tx_fifo_offset,
- .flush_data = tcp_session_flush_data,
- .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,
-};
-/* *INDENT-ON* */
-
-void
-tcp_connection_tx_pacer_update (tcp_connection_t * tc)
-{
- f64 srtt;
- u64 rate;
-
- if (!transport_connection_is_tx_paced (&tc->connection))
- return;
-
- srtt = clib_min ((f64) tc->srtt * TCP_TICK, tc->mrtt_us);
- /* TODO should constrain to interface's max throughput but
- * we don't have link speeds for sw ifs ..*/
- rate = tc->cwnd / srtt;
- transport_connection_tx_pacer_update (&tc->connection, rate);
-}
-
-void
-tcp_connection_tx_pacer_reset (tcp_connection_t * tc, u32 window,
- u32 start_bucket)
+tcp_timer_waitclose_handler (tcp_connection_t * tc)
{
tcp_worker_ctx_t *wrk = tcp_get_worker (tc->c_thread_index);
- u32 byte_rate = window / ((f64) TCP_TICK * tc->srtt);
- u64 last_time = wrk->vm->clib_time.last_cpu_time;
- transport_connection_tx_pacer_reset (&tc->connection, byte_rate,
- start_bucket, last_time);
-}
-
-static void
-tcp_timer_keep_handler (u32 conn_index)
-{
- u32 thread_index = vlib_get_thread_index ();
- tcp_connection_t *tc;
-
- tc = tcp_connection_get (conn_index, thread_index);
- tc->timers[TCP_TIMER_KEEP] = TCP_TIMER_HANDLE_INVALID;
-
- tcp_connection_close (tc);
-}
-
-static void
-tcp_timer_establish_handler (u32 conn_index)
-{
- tcp_connection_t *tc;
-
- tc = tcp_connection_get (conn_index, vlib_get_thread_index ());
- /* note: the connection may have already disappeared */
- if (PREDICT_FALSE (tc == 0))
- return;
- ASSERT (tc->state == TCP_STATE_SYN_RCVD);
- tc->timers[TCP_TIMER_ESTABLISH] = TCP_TIMER_HANDLE_INVALID;
- tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- /* Start cleanup. App wasn't notified yet so use delete notify as
- * opposed to delete to cleanup session layer state. */
- tcp_connection_timers_reset (tc);
- session_transport_delete_notify (&tc->connection);
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
-}
-
-static void
-tcp_timer_establish_ao_handler (u32 conn_index)
-{
- tcp_connection_t *tc;
-
- tc = tcp_half_open_connection_get (conn_index);
- if (!tc)
- return;
-
- ASSERT (tc->state == TCP_STATE_SYN_SENT);
- /* Notify app if we haven't tried to clean this up already */
- if (!(tc->flags & TCP_CONN_HALF_OPEN_DONE))
- session_stream_connect_notify (&tc->connection, 1 /* fail */ );
-
- tc->timers[TCP_TIMER_ESTABLISH_AO] = TCP_TIMER_HANDLE_INVALID;
- tcp_connection_cleanup (tc);
-}
-
-static void
-tcp_timer_waitclose_handler (u32 conn_index)
-{
- u32 thread_index = vlib_get_thread_index (), rto;
- tcp_connection_t *tc;
-
- tc = tcp_connection_get (conn_index, thread_index);
- if (!tc)
- return;
- tc->timers[TCP_TIMER_WAITCLOSE] = TCP_TIMER_HANDLE_INVALID;
switch (tc->state)
{
case TCP_STATE_CLOSE_WAIT:
tcp_connection_timers_reset (tc);
- session_transport_closed_notify (&tc->connection);
-
+ /* App never returned with a close */
if (!(tc->flags & TCP_CONN_FINPNDG))
{
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
+ session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (wrk, tc);
+ tcp_worker_stats_inc (wrk, to_closewait, 1);
break;
}
- /* Session didn't come back with a close. Send FIN either way
- * and switch to LAST_ACK. */
+ /* Send FIN either way 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);
+ session_transport_closed_notify (&tc->connection);
/* Make sure we don't wait in LAST ACK forever */
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
+ tcp_timer_set (&wrk->timer_wheel, tc, TCP_TIMER_WAITCLOSE,
+ tcp_cfg.lastack_time);
+ tcp_worker_stats_inc (wrk, to_closewait2, 1);
/* Don't delete the connection yet */
break;
tcp_connection_timers_reset (tc);
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) * TCP_TO_TIMER_TICK, 1);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE,
- clib_min (rto, TCP_2MSL_TIME));
- session_transport_closed_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_program_cleanup (wrk, tc);
}
else
{
/* We've sent the fin but no progress. Close the connection and
* to make sure everything is flushed, setup a cleanup timer */
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
+ tcp_program_cleanup (wrk, tc);
}
+ session_transport_closed_notify (&tc->connection);
+ tcp_worker_stats_inc (wrk, to_finwait1, 1);
break;
case TCP_STATE_LAST_ACK:
+ tcp_connection_timers_reset (tc);
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (wrk, tc);
+ tcp_worker_stats_inc (wrk, to_lastack, 1);
+ break;
case TCP_STATE_CLOSING:
tcp_connection_timers_reset (tc);
tcp_connection_set_state (tc, TCP_STATE_CLOSED);
- tcp_timer_set (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (wrk, tc);
+ tcp_worker_stats_inc (wrk, to_closing, 1);
+ break;
+ case TCP_STATE_FIN_WAIT_2:
+ tcp_send_reset (tc);
+ tcp_connection_timers_reset (tc);
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ session_transport_closed_notify (&tc->connection);
+ tcp_program_cleanup (wrk, tc);
+ tcp_worker_stats_inc (wrk, to_finwait2, 1);
+ break;
+ case TCP_STATE_TIME_WAIT:
+ tcp_connection_set_state (tc, TCP_STATE_CLOSED);
+ tcp_program_cleanup (wrk, tc);
break;
default:
- tcp_connection_del (tc);
+ clib_warning ("waitclose in state: %U", format_tcp_state, tc->state);
break;
}
}
static timer_expiration_handler *timer_expiration_handlers[TCP_N_TIMERS] =
{
tcp_timer_retransmit_handler,
- tcp_timer_delack_handler,
tcp_timer_persist_handler,
- tcp_timer_keep_handler,
tcp_timer_waitclose_handler,
tcp_timer_retransmit_syn_handler,
- tcp_timer_establish_handler,
- tcp_timer_establish_ao_handler,
};
/* *INDENT-ON* */
static void
-tcp_expired_timers_dispatch (u32 * expired_timers)
+tcp_dispatch_pending_timers (tcp_worker_ctx_t * wrk)
{
+ u32 n_timers, connection_index, timer_id, thread_index, timer_handle;
+ tcp_connection_t *tc;
int i;
- u32 connection_index, timer_id;
- for (i = 0; i < vec_len (expired_timers); i++)
+ if (!(n_timers = clib_fifo_elts (wrk->pending_timers)))
+ return;
+
+ thread_index = wrk->vm->thread_index;
+ for (i = 0; i < clib_min (n_timers, wrk->max_timers_per_loop); i++)
{
- /* Get session index and timer id */
- connection_index = expired_timers[i] & 0x0FFFFFFF;
- timer_id = expired_timers[i] >> 28;
+ clib_fifo_sub1 (wrk->pending_timers, timer_handle);
+ connection_index = timer_handle & 0x0FFFFFFF;
+ timer_id = timer_handle >> 28;
+
+ if (PREDICT_TRUE (timer_id != TCP_TIMER_RETRANSMIT_SYN))
+ tc = tcp_connection_get (connection_index, thread_index);
+ else
+ tc = tcp_half_open_connection_get (connection_index);
+
+ if (PREDICT_FALSE (!tc))
+ continue;
+
+ /* Skip if the timer is not pending. Probably it was reset while
+ * waiting for dispatch */
+ if (PREDICT_FALSE (!(tc->pending_timers & (1 << timer_id))))
+ continue;
+
+ tc->pending_timers &= ~(1 << timer_id);
+
+ /* Skip timer if it was rearmed while pending dispatch */
+ if (PREDICT_FALSE (tc->timers[timer_id] != TCP_TIMER_HANDLE_INVALID))
+ continue;
+
+ (*timer_expiration_handlers[timer_id]) (tc);
+ }
+
+ if (thread_index == 0 && clib_fifo_elts (wrk->pending_timers))
+ session_queue_run_on_main_thread (wrk->vm);
+}
- TCP_EVT_DBG (TCP_EVT_TIMER_POP, connection_index, timer_id);
+static void
+tcp_handle_cleanups (tcp_worker_ctx_t * wrk, clib_time_type_t now)
+{
+ u32 thread_index = wrk->vm->thread_index;
+ tcp_cleanup_req_t *req;
+ tcp_connection_t *tc;
- /* Handle expiration */
- (*timer_expiration_handlers[timer_id]) (connection_index);
+ while (clib_fifo_elts (wrk->pending_cleanups))
+ {
+ req = clib_fifo_head (wrk->pending_cleanups);
+ if (req->free_time > now)
+ break;
+ clib_fifo_sub2 (wrk->pending_cleanups, req);
+ tc = tcp_connection_get (req->connection_index, thread_index);
+ if (PREDICT_FALSE (!tc))
+ continue;
+ session_transport_delete_notify (&tc->connection);
+ tcp_connection_cleanup (tc);
}
}
static void
-tcp_initialize_timer_wheels (tcp_main_t * tm)
+tcp_update_time (f64 now, u8 thread_index)
{
- tw_timer_wheel_16t_2w_512sl_t *tw;
- /* *INDENT-OFF* */
- foreach_vlib_main (({
- tw = &tm->wrk_ctx[ii].timer_wheel;
- tw_timer_wheel_init_16t_2w_512sl (tw, tcp_expired_timers_dispatch,
- 100e-3 /* timer period 100ms */ , ~0);
- tw->last_run_time = vlib_time_now (this_vlib_main);
- }));
- /* *INDENT-ON* */
+ tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
+
+ tcp_set_time_now (wrk, now);
+ tcp_handle_cleanups (wrk, now);
+ tcp_timer_expire_timers (&wrk->timer_wheel, now);
+ tcp_dispatch_pending_timers (wrk);
+}
+
+static void
+tcp_session_flush_data (transport_connection_t * tconn)
+{
+ tcp_connection_t *tc = (tcp_connection_t *) tconn;
+ if (tc->flags & TCP_CONN_PSH_PENDING)
+ return;
+ tc->flags |= TCP_CONN_PSH_PENDING;
+ 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,
+ .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,
+ .attribute = tcp_session_attribute,
+ .connect = tcp_session_open,
+ .close = tcp_session_close,
+ .cleanup = tcp_session_cleanup,
+ .cleanup_ho = tcp_session_cleanup_ho,
+ .reset = tcp_session_reset,
+ .send_params = tcp_session_send_params,
+ .update_time = tcp_update_time,
+ .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,
+ .transport_options = {
+ .name = "tcp",
+ .short_name = "T",
+ .tx_type = TRANSPORT_TX_PEEK,
+ .service_type = TRANSPORT_SERVICE_VC,
+ },
+};
+/* *INDENT-ON* */
+
+void
+tcp_connection_tx_pacer_update (tcp_connection_t * tc)
+{
+ if (!transport_connection_is_tx_paced (&tc->connection))
+ return;
+
+ f64 srtt = clib_min ((f64) tc->srtt * TCP_TICK, tc->mrtt_us);
+
+ transport_connection_tx_pacer_update (&tc->connection,
+ tcp_cc_get_pacing_rate (tc),
+ srtt * CLIB_US_TIME_FREQ);
+}
+
+void
+tcp_connection_tx_pacer_reset (tcp_connection_t * tc, u32 window,
+ u32 start_bucket)
+{
+ f64 srtt = clib_min ((f64) tc->srtt * TCP_TICK, tc->mrtt_us);
+ transport_connection_tx_pacer_reset (&tc->connection,
+ tcp_cc_get_pacing_rate (tc),
+ start_bucket,
+ srtt * CLIB_US_TIME_FREQ);
+}
+
+void
+tcp_reschedule (tcp_connection_t * tc)
+{
+ if (tcp_in_cong_recovery (tc) || tcp_snd_space_inline (tc))
+ transport_connection_reschedule (&tc->connection);
+}
+
+static void
+tcp_expired_timers_dispatch (u32 * expired_timers)
+{
+ u32 thread_index = vlib_get_thread_index (), n_left, max_per_loop;
+ u32 connection_index, timer_id, n_expired, max_loops;
+ tcp_worker_ctx_t *wrk;
+ tcp_connection_t *tc;
+ int i;
+
+ wrk = tcp_get_worker (thread_index);
+ n_expired = vec_len (expired_timers);
+ tcp_worker_stats_inc (wrk, timer_expirations, n_expired);
+ n_left = clib_fifo_elts (wrk->pending_timers);
+
+ /*
+ * Invalidate all timer handles before dispatching. This avoids dangling
+ * index references to timer wheel pool entries that have been freed.
+ */
+ for (i = 0; i < n_expired; i++)
+ {
+ connection_index = expired_timers[i] & 0x0FFFFFFF;
+ timer_id = expired_timers[i] >> 28;
+
+ if (timer_id != TCP_TIMER_RETRANSMIT_SYN)
+ tc = tcp_connection_get (connection_index, thread_index);
+ else
+ tc = tcp_half_open_connection_get (connection_index);
+
+ TCP_EVT (TCP_EVT_TIMER_POP, connection_index, timer_id);
+
+ tc->timers[timer_id] = TCP_TIMER_HANDLE_INVALID;
+ tc->pending_timers |= (1 << timer_id);
+ }
+
+ clib_fifo_add (wrk->pending_timers, expired_timers, n_expired);
+
+ max_loops = clib_max (1, 0.5 * TCP_TIMER_TICK * wrk->vm->loops_per_second);
+ max_per_loop = clib_max ((n_left + n_expired) / max_loops, 10);
+ max_per_loop = clib_min (max_per_loop, VLIB_FRAME_SIZE);
+ wrk->max_timers_per_loop = clib_max (n_left ? wrk->max_timers_per_loop : 0,
+ max_per_loop);
+
+ if (thread_index == 0)
+ session_queue_run_on_main_thread (wrk->vm);
}
static void
u32 num_threads, n_workers, prealloc_conn_per_wrk;
tcp_connection_t *tc __attribute__ ((unused));
tcp_main_t *tm = vnet_get_tcp_main ();
+ tcp_worker_ctx_t *wrk;
clib_error_t *error = 0;
int thread;
*/
num_threads = 1 /* main thread */ + vtm->n_threads;
- vec_validate (tm->connections, num_threads - 1);
vec_validate (tm->wrk_ctx, num_threads - 1);
n_workers = num_threads == 1 ? 1 : vtm->n_threads;
- prealloc_conn_per_wrk = tm->preallocated_connections / n_workers;
+ prealloc_conn_per_wrk = tcp_cfg.preallocated_connections / n_workers;
+
+ wrk = &tm->wrk_ctx[0];
+ wrk->tco_next_node[0] = vlib_node_get_next (vm, session_queue_node.index,
+ tcp4_output_node.index);
+ wrk->tco_next_node[1] = vlib_node_get_next (vm, session_queue_node.index,
+ tcp6_output_node.index);
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];
+ wrk = &tm->wrk_ctx[thread];
+
+ vec_validate (wrk->pending_deq_acked, 255);
+ vec_validate (wrk->pending_disconnects, 255);
+ vec_validate (wrk->pending_resets, 255);
+ vec_reset_length (wrk->pending_deq_acked);
+ vec_reset_length (wrk->pending_disconnects);
+ vec_reset_length (wrk->pending_resets);
+ wrk->vm = vlib_get_main_by_index (thread);
+ wrk->max_timers_per_loop = 10;
+
+ if (thread > 0)
+ {
+ wrk->tco_next_node[0] = tm->wrk_ctx[0].tco_next_node[0];
+ wrk->tco_next_node[1] = tm->wrk_ctx[0].tco_next_node[1];
+ }
/*
* Preallocate connections. Assume that thread 0 won't
* use preallocated threads when running multi-core
*/
if ((thread > 0 || num_threads == 1) && prealloc_conn_per_wrk)
- pool_init_fixed (tm->connections[thread], prealloc_conn_per_wrk);
+ pool_init_fixed (wrk->connections, prealloc_conn_per_wrk);
+
+ tcp_timer_initialize_wheel (&wrk->timer_wheel,
+ tcp_expired_timers_dispatch,
+ vlib_time_now (vm));
}
/*
* Use a preallocated half-open connection pool?
*/
- if (tm->preallocated_half_open_connections)
+ if (tcp_cfg.preallocated_half_open_connections)
pool_init_fixed (tm->half_open_connections,
- tm->preallocated_half_open_connections);
-
- /* Initialize clocks per tick for TCP timestamp. Used to compute
- * monotonically increasing timestamps. */
- tm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
- / TCP_TSTAMP_RESOLUTION;
+ tcp_cfg.preallocated_half_open_connections);
if (num_threads > 1)
{
clib_spinlock_init (&tm->half_open_lock);
}
- tcp_initialize_timer_wheels (tm);
tcp_initialize_iss_seed (tm);
tm->bytes_per_buffer = vlib_buffer_get_default_data_size (vm);
+ tm->cc_last_type = TCP_CC_LAST;
+ tm->ipl_next_node[0] = vlib_node_get_next (vm, session_queue_node.index,
+ ip4_lookup_node.index);
+ tm->ipl_next_node[1] = vlib_node_get_next (vm, session_queue_node.index,
+ ip6_lookup_node.index);
return error;
}
tm->punt_unknown6 = is_add;
}
+/**
+ * Initialize default values for tcp parameters
+ */
+static void
+tcp_configuration_init (void)
+{
+ /* Initial wnd for SYN. Fifos are not allocated at that point so use some
+ * predefined value. For SYN-ACK we still want the scale to be computed in
+ * the same way */
+ tcp_cfg.max_rx_fifo = 32 << 20;
+ tcp_cfg.min_rx_fifo = 4 << 10;
+
+ tcp_cfg.default_mtu = 1500;
+ tcp_cfg.initial_cwnd_multiplier = 0;
+ tcp_cfg.enable_tx_pacing = 1;
+ tcp_cfg.allow_tso = 0;
+ tcp_cfg.csum_offload = 1;
+ tcp_cfg.cc_algo = TCP_CC_CUBIC;
+ tcp_cfg.rwnd_min_update_ack = 1;
+ tcp_cfg.max_gso_size = TCP_MAX_GSO_SZ;
+
+ /* Time constants defined as timer tick (100us) multiples */
+ tcp_cfg.closewait_time = 20000; /* 2s */
+ tcp_cfg.timewait_time = 100000; /* 10s */
+ tcp_cfg.finwait1_time = 600000; /* 60s */
+ tcp_cfg.lastack_time = 300000; /* 30s */
+ tcp_cfg.finwait2_time = 300000; /* 30s */
+ tcp_cfg.closing_time = 300000; /* 30s */
+
+ /* This value is seconds */
+ tcp_cfg.cleanup_time = 0.1; /* 100ms */
+}
+
static clib_error_t *
tcp_init (vlib_main_t * vm)
{
transport_register_protocol (TRANSPORT_PROTO_TCP, &tcp_proto,
FIB_PROTOCOL_IP6, tcp6_output_node.index);
- tcp_api_reference ();
- tm->tx_pacing = 1;
- tm->cc_algo = TCP_CC_NEWRENO;
- return 0;
-}
-
-VLIB_INIT_FUNCTION (tcp_init);
-
-uword
-unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
-{
- uword *result = va_arg (*va, uword *);
-
- if (unformat (input, "newreno"))
- *result = TCP_CC_NEWRENO;
- else if (unformat (input, "cubic"))
- *result = TCP_CC_CUBIC;
- else
- return 0;
-
- return 1;
-}
-
-uword
-unformat_tcp_cc_algo_cfg (unformat_input_t * input, va_list * va)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- tcp_cc_algorithm_t *cc_alg;
- unformat_input_t sub_input;
- int found = 0;
-
- vec_foreach (cc_alg, tm->cc_algos)
- {
- if (!unformat (input, cc_alg->name))
- continue;
-
- if (cc_alg->unformat_cfg
- && unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input))
- {
- if (cc_alg->unformat_cfg (&sub_input))
- found = 1;
- }
- }
- return found;
-}
-
-static clib_error_t *
-tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "preallocated-connections %d",
- &tm->preallocated_connections))
- ;
- else if (unformat (input, "preallocated-half-open-connections %d",
- &tm->preallocated_half_open_connections))
- ;
- else if (unformat (input, "buffer-fail-fraction %f",
- &tm->buffer_fail_fraction))
- ;
- else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
- &tm->max_rx_fifo))
- ;
- else if (unformat (input, "no-tx-pacing"))
- tm->tx_pacing = 0;
- else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
- &tm->cc_algo))
- ;
- else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg))
- ;
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
- return 0;
-}
-
-VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp");
-
-
-/**
- * \brief Configure an ipv4 source address range
- * @param vm vlib_main_t pointer
- * @param start first ipv4 address in the source address range
- * @param end last ipv4 address in the source address range
- * @param table_id VRF / table ID, 0 for the default FIB
- * @return 0 if all OK, else an error indication from api_errno.h
- */
-
-int
-tcp_configure_v4_source_address_range (vlib_main_t * vm,
- ip4_address_t * start,
- ip4_address_t * end, u32 table_id)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- 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));
-
- fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id);
-
- if (fib_index == ~0)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- start_host_byte_order = clib_net_to_host_u32 (start->as_u32);
- end_host_byte_order = clib_net_to_host_u32 (end->as_u32);
-
- /* sanity check for reversed args or some such */
- if ((end_host_byte_order - start_host_byte_order) > (10 << 10))
- return VNET_API_ERROR_INVALID_ARGUMENT;
-
- /* Lookup the last address, to identify the interface involved */
- prefix.fp_len = 32;
- prefix.fp_proto = FIB_PROTOCOL_IP4;
- memcpy (&prefix.fp_addr.ip4, end, sizeof (ip4_address_t));
-
- fei = fib_table_lookup (fib_index, &prefix);
-
- /* Couldn't find route to destination. Bail out. */
- if (fei == FIB_NODE_INDEX_INVALID)
- return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
-
- 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;
-
- do
- {
- dpo_id_t dpo = DPO_INVALID;
-
- vec_add1 (tm->ip4_src_addresses, start[0]);
-
- /* Add local adjacencies for the range */
-
- receive_dpo_add_or_lock (DPO_PROTO_IP4, ~0 /* sw_if_index */ ,
- NULL, &dpo);
- prefix.fp_len = 32;
- prefix.fp_proto = FIB_PROTOCOL_IP4;
- prefix.fp_addr.ip4.as_u32 = start->as_u32;
-
- fib_table_entry_special_dpo_update (fib_index,
- &prefix,
- FIB_SOURCE_API,
- FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
- dpo_reset (&dpo);
-
- start_host_byte_order++;
- start->as_u32 = clib_host_to_net_u32 (start_host_byte_order);
- }
- while (start_host_byte_order <= end_host_byte_order);
-
- return 0;
-}
-
-/**
- * \brief Configure an ipv6 source address range
- * @param vm vlib_main_t pointer
- * @param start first ipv6 address in the source address range
- * @param end last ipv6 address in the source address range
- * @param table_id VRF / table ID, 0 for the default FIB
- * @return 0 if all OK, else an error indication from api_errno.h
- */
-
-int
-tcp_configure_v6_source_address_range (vlib_main_t * vm,
- ip6_address_t * start,
- ip6_address_t * end, u32 table_id)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- fib_prefix_t prefix;
- u32 fib_index = 0;
- fib_node_index_t fei;
- u32 sw_if_index;
-
- clib_memset (&prefix, 0, sizeof (prefix));
-
- fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
-
- if (fib_index == ~0)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- while (1)
- {
- int i;
- ip6_address_t tmp;
- dpo_id_t dpo = DPO_INVALID;
-
- /* Remember this address */
- vec_add1 (tm->ip6_src_addresses, start[0]);
-
- /* Lookup the prefix, to identify the interface involved */
- prefix.fp_len = 128;
- prefix.fp_proto = FIB_PROTOCOL_IP6;
- memcpy (&prefix.fp_addr.ip6, start, sizeof (ip6_address_t));
-
- fei = fib_table_lookup (fib_index, &prefix);
-
- /* Couldn't find route to destination. Bail out. */
- if (fei == FIB_NODE_INDEX_INVALID)
- return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
-
- sw_if_index = fib_entry_get_resolving_interface (fei);
-
- if (sw_if_index == (u32) ~ 0)
- return VNET_API_ERROR_NO_MATCHING_INTERFACE;
+ tcp_configuration_init ();
- /* Add a proxy neighbor discovery entry for this address */
- ip6_neighbor_proxy_add_del (sw_if_index, start, 0 /* is_del */ );
+ tm->cc_algo_by_name = hash_create_string (0, sizeof (uword));
- /* Add a receive adjacency for this address */
- receive_dpo_add_or_lock (DPO_PROTO_IP6, ~0 /* sw_if_index */ ,
- NULL, &dpo);
-
- fib_table_entry_special_dpo_update (fib_index,
- &prefix,
- FIB_SOURCE_API,
- FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
- dpo_reset (&dpo);
-
- /* Done with the entire range? */
- if (!memcmp (start, end, sizeof (start[0])))
- break;
-
- /* Increment the address. DGMS. */
- tmp = start[0];
- for (i = 15; i >= 0; i--)
- {
- tmp.as_u8[i] += 1;
- if (tmp.as_u8[i] != 0)
- break;
- }
- start[0] = tmp;
- }
- return 0;
-}
-
-static clib_error_t *
-tcp_src_address (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd_arg)
-{
- ip4_address_t v4start, v4end;
- ip6_address_t v6start, v6end;
- u32 table_id = 0;
- int v4set = 0;
- int v6set = 0;
- int rv;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%U - %U", unformat_ip4_address, &v4start,
- unformat_ip4_address, &v4end))
- v4set = 1;
- else if (unformat (input, "%U", unformat_ip4_address, &v4start))
- {
- memcpy (&v4end, &v4start, sizeof (v4start));
- v4set = 1;
- }
- else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start,
- unformat_ip6_address, &v6end))
- v6set = 1;
- else if (unformat (input, "%U", unformat_ip6_address, &v6start))
- {
- memcpy (&v6end, &v6start, sizeof (v6start));
- v6set = 1;
- }
- else if (unformat (input, "fib-table %d", &table_id))
- ;
- else
- break;
- }
-
- if (!v4set && !v6set)
- return clib_error_return (0, "at least one v4 or v6 address required");
-
- if (v4set)
- {
- rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end,
- table_id);
- switch (rv)
- {
- case 0:
- break;
-
- case VNET_API_ERROR_NO_SUCH_FIB:
- return clib_error_return (0, "Invalid table-id %d", table_id);
-
- case VNET_API_ERROR_INVALID_ARGUMENT:
- return clib_error_return (0, "Invalid address range %U - %U",
- format_ip4_address, &v4start,
- format_ip4_address, &v4end);
- default:
- return clib_error_return (0, "error %d", rv);
- break;
- }
- }
- if (v6set)
- {
- rv = tcp_configure_v6_source_address_range (vm, &v6start, &v6end,
- table_id);
- switch (rv)
- {
- case 0:
- break;
-
- case VNET_API_ERROR_NO_SUCH_FIB:
- return clib_error_return (0, "Invalid table-id %d", table_id);
-
- default:
- return clib_error_return (0, "error %d", rv);
- break;
- }
- }
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_src_address_command, static) =
-{
- .path = "tcp src-address",
- .short_help = "tcp src-address <ip-addr> [- <ip-addr>] add src address range",
- .function = tcp_src_address,
-};
-/* *INDENT-ON* */
-
-static u8 *
-tcp_scoreboard_dump_trace (u8 * s, sack_scoreboard_t * sb)
-{
-#if TCP_SCOREBOARD_TRACE
-
- scoreboard_trace_elt_t *block;
- int i = 0;
-
- if (!sb->trace)
- return s;
-
- s = format (s, "scoreboard trace:");
- vec_foreach (block, sb->trace)
- {
- s = format (s, "{%u, %u, %u, %u, %u}, ", block->start, block->end,
- block->ack, block->snd_una_max, block->group);
- if ((++i % 3) == 0)
- s = format (s, "\n");
- }
- return s;
-#else
return 0;
-#endif
}
-static clib_error_t *
-tcp_show_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd_arg)
-{
- transport_connection_t *tconn = 0;
- tcp_connection_t *tc;
- u8 *s = 0;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%U", unformat_transport_connection, &tconn,
- TRANSPORT_PROTO_TCP))
- ;
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
-
- if (!TCP_SCOREBOARD_TRACE)
- {
- vlib_cli_output (vm, "scoreboard tracing not enabled");
- return 0;
- }
-
- tc = tcp_get_connection_from_transport (tconn);
- s = tcp_scoreboard_dump_trace (s, &tc->sack_sb);
- vlib_cli_output (vm, "%v", s);
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) =
-{
- .path = "show tcp scoreboard trace",
- .short_help = "show tcp scoreboard trace <connection>",
- .function = tcp_show_scoreboard_trace_fn,
-};
-/* *INDENT-ON* */
-
-u8 *
-tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose)
-{
- int i, trace_len;
- scoreboard_trace_elt_t *trace;
- u32 next_ack, left, group, has_new_ack = 0;
- tcp_connection_t _dummy_tc, *dummy_tc = &_dummy_tc;
- sack_block_t *block;
-
- if (!TCP_SCOREBOARD_TRACE)
- {
- s = format (s, "scoreboard tracing not enabled");
- return s;
- }
-
- if (!tc)
- return s;
-
- clib_memset (dummy_tc, 0, sizeof (*dummy_tc));
- tcp_connection_timers_init (dummy_tc);
- scoreboard_init (&dummy_tc->sack_sb);
- dummy_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
-
-#if TCP_SCOREBOARD_TRACE
- trace = tc->sack_sb.trace;
- trace_len = vec_len (tc->sack_sb.trace);
-#endif
-
- for (i = 0; i < trace_len; i++)
- {
- if (trace[i].ack != 0)
- {
- dummy_tc->snd_una = trace[i].ack - 1448;
- dummy_tc->snd_una_max = trace[i].ack;
- }
- }
-
- left = 0;
- while (left < trace_len)
- {
- group = trace[left].group;
- vec_reset_length (dummy_tc->rcv_opts.sacks);
- has_new_ack = 0;
- while (trace[left].group == group)
- {
- if (trace[left].ack != 0)
- {
- if (verbose)
- s = format (s, "Adding ack %u, snd_una_max %u, segs: ",
- trace[left].ack, trace[left].snd_una_max);
- dummy_tc->snd_una_max = trace[left].snd_una_max;
- next_ack = trace[left].ack;
- has_new_ack = 1;
- }
- else
- {
- if (verbose)
- s = format (s, "[%u, %u], ", trace[left].start,
- trace[left].end);
- vec_add2 (dummy_tc->rcv_opts.sacks, block, 1);
- block->start = trace[left].start;
- block->end = trace[left].end;
- }
- left++;
- }
-
- /* Push segments */
- tcp_rcv_sacks (dummy_tc, next_ack);
- if (has_new_ack)
- dummy_tc->snd_una = next_ack + dummy_tc->sack_sb.snd_una_adv;
-
- if (verbose)
- s = format (s, "result: %U", format_tcp_scoreboard,
- &dummy_tc->sack_sb);
-
- }
- s = format (s, "result: %U", format_tcp_scoreboard, &dummy_tc->sack_sb);
-
- return s;
-}
-
-static clib_error_t *
-tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd_arg)
-{
- transport_connection_t *tconn = 0;
- tcp_connection_t *tc = 0;
- u8 *str = 0;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%U", unformat_transport_connection, &tconn,
- TRANSPORT_PROTO_TCP))
- ;
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
-
- if (!TCP_SCOREBOARD_TRACE)
- {
- vlib_cli_output (vm, "scoreboard tracing not enabled");
- return 0;
- }
-
- tc = tcp_get_connection_from_transport (tconn);
- if (!tc)
- {
- vlib_cli_output (vm, "connection not found");
- return 0;
- }
- str = tcp_scoreboard_replay (str, tc, 1);
- vlib_cli_output (vm, "%v", str);
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) =
-{
- .path = "tcp replay scoreboard",
- .short_help = "tcp replay scoreboard <connection>",
- .function = tcp_scoreboard_trace_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-show_tcp_punt_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd_arg)
-{
- tcp_main_t *tm = vnet_get_tcp_main ();
- if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- return clib_error_return (0, "unknown input `%U'", format_unformat_error,
- input);
- vlib_cli_output (vm, "IPv4 TCP punt: %s",
- tm->punt_unknown4 ? "enabled" : "disabled");
- vlib_cli_output (vm, "IPv6 TCP punt: %s",
- tm->punt_unknown6 ? "enabled" : "disabled");
- return 0;
-}
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_tcp_punt_command, static) =
-{
- .path = "show tcp punt",
- .short_help = "show tcp punt",
- .function = show_tcp_punt_fn,
-};
-/* *INDENT-ON* */
+VLIB_INIT_FUNCTION (tcp_init);
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff