tcp_main_t tcp_main;
+typedef struct
+{
+ fib_protocol_t nh_proto;
+ vnet_link_t link_type;
+ ip46_address_t ip;
+ u32 sw_if_index;
+ u8 is_add;
+} tcp_add_del_adj_args_t;
+
+static void
+tcp_add_del_adj_cb (tcp_add_del_adj_args_t * args)
+{
+ u32 ai;
+ if (args->is_add)
+ {
+ adj_nbr_add_or_lock (args->nh_proto, args->link_type, &args->ip,
+ args->sw_if_index);
+ }
+ else
+ {
+ ai = adj_nbr_find (FIB_PROTOCOL_IP6, VNET_LINK_IP6, &args->ip,
+ args->sw_if_index);
+ if (ai != ADJ_INDEX_INVALID)
+ adj_unlock (ai);
+ }
+}
+
+static void
+tcp_add_del_adjacency (tcp_connection_t * tc, u8 is_add)
+{
+ tcp_add_del_adj_args_t args = {
+ .nh_proto = FIB_PROTOCOL_IP6,
+ .link_type = VNET_LINK_IP6,
+ .ip = tc->c_rmt_ip,
+ .sw_if_index = tc->sw_if_index,
+ .is_add = is_add
+ };
+ vlib_rpc_call_main_thread (tcp_add_del_adj_cb, (u8 *) & args,
+ sizeof (args));
+}
+
static u32
tcp_connection_bind (u32 session_index, transport_endpoint_t * lcl)
{
void *iface_ip;
pool_get (tm->listener_pool, listener);
- memset (listener, 0, sizeof (*listener));
+ clib_memset (listener, 0, sizeof (*listener));
listener->c_c_index = listener - tm->listener_pool;
listener->c_lcl_port = lcl->port;
return listener->c_c_index;
}
-u32
+static u32
tcp_session_bind (u32 session_index, transport_endpoint_t * tep)
{
return tcp_connection_bind (session_index, tep);
/* Poison the entry */
if (CLIB_DEBUG > 0)
- memset (tc, 0xFA, sizeof (*tc));
+ clib_memset (tc, 0xFA, sizeof (*tc));
pool_put_index (tm->listener_pool, listener_index);
}
-u32
+static u32
tcp_session_unbind (u32 listener_index)
{
tcp_connection_unbind (listener_index);
return 0;
}
-transport_connection_t *
+static transport_connection_t *
tcp_session_get_listener (u32 listener_index)
{
tcp_main_t *tm = vnet_get_tcp_main ();
* Cleanup half-open connection
*
*/
-void
+static void
tcp_half_open_connection_del (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)
- memset (tc, 0xFA, sizeof (*tc));
+ clib_memset (tc, 0xFA, sizeof (*tc));
clib_spinlock_unlock_if_init (&tm->half_open_lock);
}
return 0;
}
-tcp_connection_t *
+static tcp_connection_t *
tcp_half_open_connection_new (void)
{
tcp_main_t *tm = vnet_get_tcp_main ();
tcp_connection_t *tc = 0;
ASSERT (vlib_get_thread_index () == 0);
pool_get (tm->half_open_connections, tc);
- memset (tc, 0, sizeof (*tc));
+ clib_memset (tc, 0, sizeof (*tc));
tc->c_c_index = tc - tm->half_open_connections;
return tc;
}
/* Try to remove the half-open connection. If this is not the owning
* thread, tc won't be removed. Retransmit or establish timers will
* eventually expire and call again cleanup on the right thread. */
- tcp_half_open_connection_cleanup (tc);
+ if (tcp_half_open_connection_cleanup (tc))
+ tc->flags |= TCP_CONN_HALF_OPEN_DONE;
}
else
{
/* 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)
- memset (tc, 0xFA, sizeof (*tc));
+ clib_memset (tc, 0xFA, sizeof (*tc));
pool_put (tm->connections[thread_index], tc);
}
}
tcp_connection_t *tc;
pool_get (tm->connections[thread_index], tc);
- memset (tc, 0, sizeof (*tc));
+ clib_memset (tc, 0, sizeof (*tc));
tc->c_c_index = tc - tm->connections[thread_index];
tc->c_thread_index = thread_index;
return tc;
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_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
stream_session_reset_notify (&tc->connection);
- /* fall through */
+ break;
case TCP_STATE_CLOSE_WAIT:
case TCP_STATE_FIN_WAIT_1:
case TCP_STATE_FIN_WAIT_2:
case TCP_STATE_CLOSING:
tc->state = TCP_STATE_CLOSED;
TCP_EVT_DBG (TCP_EVT_STATE_CHANGE, tc);
-
- /* Make sure all timers are cleared */
tcp_connection_timers_reset (tc);
-
- /* Wait for cleanup from session layer but not forever */
tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
break;
case TCP_STATE_CLOSED:
tc->state = TCP_STATE_CLOSED;
break;
case TCP_STATE_SYN_RCVD:
+ tcp_connection_timers_reset (tc);
tcp_send_fin (tc);
tc->state = TCP_STATE_FIN_WAIT_1;
+ tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
break;
case TCP_STATE_ESTABLISHED:
- if (!stream_session_tx_fifo_max_dequeue (&tc->connection))
+ if (!session_tx_fifo_max_dequeue (&tc->connection))
tcp_send_fin (tc);
else
tc->flags |= TCP_CONN_FINPNDG;
tc->state = TCP_STATE_FIN_WAIT_1;
break;
case TCP_STATE_CLOSE_WAIT:
- tcp_connection_timers_reset (tc);
- tcp_send_fin (tc);
- tc->state = TCP_STATE_LAST_ACK;
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
+ if (!session_tx_fifo_max_dequeue (&tc->connection))
+ {
+ tcp_send_fin (tc);
+ tcp_connection_timers_reset (tc);
+ tc->state = TCP_STATE_LAST_ACK;
+ tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_2MSL_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_connection_del (tc);
}
-void
+static void
tcp_session_close (u32 conn_index, u32 thread_index)
{
tcp_connection_t *tc;
tcp_connection_close (tc);
}
-void
+static void
tcp_session_cleanup (u32 conn_index, u32 thread_index)
{
tcp_connection_t *tc;
tc = tcp_connection_get (conn_index, thread_index);
tcp_connection_timers_reset (tc);
-
- /* Wait for the session tx events to clear */
tc->state = TCP_STATE_CLOSED;
TCP_EVT_DBG (TCP_EVT_STATE_CHANGE, tc);
- tcp_timer_update (tc, TCP_TIMER_WAITCLOSE, TCP_CLEANUP_TIME);
+ tcp_connection_cleanup (tc);
}
/**
if (tc->c_is_ip4)
{
ip4_tcp_hdr_t hdr;
- memset (&hdr, 0, sizeof (hdr));
+ clib_memset (&hdr, 0, sizeof (hdr));
hdr.ip.protocol = IP_PROTOCOL_TCP;
hdr.ip.address_pair.src.as_u32 = tc->c_lcl_ip.ip4.as_u32;
hdr.ip.address_pair.dst.as_u32 = tc->c_rmt_ip.ip4.as_u32;
else
{
ip6_tcp_hdr_t hdr;
- memset (&hdr, 0, sizeof (hdr));
+ clib_memset (&hdr, 0, sizeof (hdr));
hdr.ip.protocol = IP_PROTOCOL_TCP;
clib_memcpy (&hdr.ip.src_address, &tc->c_lcl_ip.ip6,
sizeof (ip6_address_t));
}
#endif /* 0 */
+static void
+tcp_cc_init (tcp_connection_t * tc)
+{
+ tc->cc_algo = tcp_cc_algo_get (TCP_CC_NEWRENO);
+ 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];
+}
+
+
/**
* Initialize connection send variables.
*/
* handshake may make it look as if time has flown in the opposite
* direction for us.
*/
- tcp_set_time_now (vlib_get_thread_index ());
+ tcp_set_time_now (tcp_get_worker (vlib_get_thread_index ()));
time_now = tcp_time_now ();
tc->iss = random_u32 (&time_now);
tc->snd_una_max = tc->snd_nxt;
}
+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);
+ tc->mrtt_us = (u32) ~ 0;
+}
+
/** Initialize tcp connection variables
*
* Should be called after having received a msg from the peer, i.e., a SYN or
if (tc->state == TCP_STATE_SYN_RCVD)
tcp_init_snd_vars (tc);
- // tcp_connection_fib_attach (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_enable_pacing (tc);
}
static int
return 0;
}
-int
-tcp_connection_open (transport_endpoint_t * rmt)
+static int
+tcp_session_open (transport_endpoint_cfg_t * rmt)
{
tcp_main_t *tm = vnet_get_tcp_main ();
tcp_connection_t *tc;
return tc->c_c_index;
}
-int
-tcp_session_open (transport_endpoint_t * tep)
-{
- return tcp_connection_open (tep);
-}
-
const char *tcp_dbg_evt_str[] = {
#define _(sym, str) str,
foreach_tcp_dbg_evt
#undef _
};
-u8 *
+static u8 *
format_tcp_connection_flags (u8 * s, va_list * args)
{
tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
#undef _
};
-u8 *
+static u8 *
format_tcp_timers (u8 * s, va_list * args)
{
tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
last = i;
- s = format (s, "[");
for (i = 0; i < last; i++)
{
if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
}
if (last >= 0)
- s = format (s, "%s]", tcp_conn_timers[i]);
- else
- s = format (s, "]");
+ s = format (s, "%s", tcp_conn_timers[i]);
return s;
}
-u8 *
+static u8 *
format_tcp_congestion_status (u8 * s, va_list * args)
{
tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
return s;
}
-u8 *
+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, " flags: %U timers: %U\n", format_tcp_connection_flags, tc,
- format_tcp_timers, tc);
+ 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 snd_wl1 %u snd_wl2 %u\n",
- tc->snd_wnd, tc->rcv_wnd, tc->snd_wl1 - 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 send space %u rcv_wnd_av %d\n",
+ 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, " cong %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, " prev_ssthresh %u snd_congestion %u dupack %u",
- tc->prev_ssthresh, tc->snd_congestion - tc->iss,
- tc->rcv_dupacks);
- s = format (s, " limited_transmit %u\n", tc->limited_transmit - tc->iss);
- s = format (s, " tsecr %u tsecr_last_ack %u\n", tc->rcv_opts.tsecr,
- tc->tsecr_last_ack);
- s = format (s, " rto %u rto_boff %u srtt %u rttvar %u rtt_ts %u ", tc->rto,
- tc->rto_boff, tc->srtt, tc->rttvar, tc->rtt_ts);
- s = format (s, "rtt_seq %u\n", tc->rtt_seq);
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 rttvar %u rtt_ts %2.5f ",
+ tc->rto, tc->rto_boff, tc->srtt, 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, " scoreboard: %U\n", format_tcp_scoreboard, &tc->sack_sb,
- tc);
+ {
+ 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;
}
-u8 *
+static u8 *
format_tcp_connection_id (u8 * s, va_list * args)
{
tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
return s;
if (tc->c_is_ip4)
{
- s = format (s, "[#%d][%s] %U:%d->%U:%d", tc->c_thread_index, "T",
- format_ip4_address, &tc->c_lcl_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][%s] %U:%d->%U:%d", tc->c_thread_index, "T",
- format_ip6_address, &tc->c_lcl_ip6,
+ 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 *
+static u8 *
format_tcp_session (u8 * s, va_list * args)
{
u32 tci = va_arg (*args, u32);
return s;
}
-u8 *
+static u8 *
format_tcp_listener_session (u8 * s, va_list * args)
{
u32 tci = va_arg (*args, u32);
return format (s, "%U", format_tcp_connection_id, tc);
}
-u8 *
+static u8 *
format_tcp_half_open_session (u8 * s, va_list * args)
{
u32 tci = va_arg (*args, u32);
return s;
}
-u8 *
+static u8 *
format_tcp_sack_hole (u8 * s, va_list * args)
{
sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *);
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, " last_bytes_delivered %u high_sacked %u snd_una_adv %u\n",
- sb->last_bytes_delivered, sb->high_sacked, sb->snd_una_adv);
- s = format (s, " cur_rxt_hole %u high_rxt %u rescue_rxt %u",
- sb->cur_rxt_hole, sb->high_rxt, sb->rescue_rxt);
+ 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);
hole = scoreboard_first_hole (sb);
if (hole)
- s = format (s, "\n head %u tail %u holes:\n", sb->head, sb->tail);
+ 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)
{
return s;
}
-transport_connection_t *
+static transport_connection_t *
tcp_session_get_transport (u32 conn_index, u32 thread_index)
{
tcp_connection_t *tc = tcp_connection_get (conn_index, thread_index);
return &tc->connection;
}
-transport_connection_t *
+static transport_connection_t *
tcp_half_open_session_get_transport (u32 conn_index)
{
tcp_connection_t *tc = tcp_half_open_connection_get (conn_index);
* the tcp options to be used in the next burst and subtracts their
* length from the connection's snd_mss.
*/
-u16
+static u16
tcp_session_send_mss (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_snd_mss (tc);
+ tcp_update_burst_snd_vars (tc);
return tc->snd_mss;
}
* @param tc tcp connection
* @return number of bytes session is allowed to write
*/
-u32
-tcp_snd_space (tcp_connection_t * tc)
+static inline u32
+tcp_snd_space_inline (tcp_connection_t * tc)
{
int snd_space, snt_limited;
- if (PREDICT_TRUE (tcp_in_cong_recovery (tc) == 0))
- {
- snd_space = tcp_available_output_snd_space (tc);
+ if (PREDICT_FALSE (tcp_in_fastrecovery (tc)))
+ return 0;
- /* 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 (tc->rcv_dupacks == 1 && tc->limited_transmit != tc->snd_nxt)
- tc->limited_transmit = tc->snd_nxt;
- ASSERT (seq_leq (tc->limited_transmit, tc->snd_nxt));
+ snd_space = tcp_available_output_snd_space (tc);
- snt_limited = tc->snd_nxt - tc->limited_transmit;
- snd_space = clib_max (2 * tc->snd_mss - snt_limited, 0);
- }
- return tcp_round_snd_space (tc, snd_space);
- }
-
- if (tcp_in_recovery (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)))
{
- tc->snd_nxt = tc->snd_una_max;
- snd_space = tcp_available_snd_wnd (tc) - tc->snd_rxt_bytes
- - (tc->snd_una_max - tc->snd_congestion);
- if (snd_space <= 0 || (tc->snd_una_max - tc->snd_una) >= tc->snd_wnd)
- return 0;
- return tcp_round_snd_space (tc, snd_space);
- }
+ if (tc->rcv_dupacks == 1 && tc->limited_transmit != tc->snd_nxt)
+ tc->limited_transmit = tc->snd_nxt;
+ ASSERT (seq_leq (tc->limited_transmit, tc->snd_nxt));
- /* RFC 5681: When previously unsent data is available and the new value of
- * cwnd and the receiver's advertised window allow, a TCP SHOULD send 1*SMSS
- * bytes of previously unsent data. */
- if (tcp_in_fastrecovery (tc) && !tcp_fastrecovery_sent_1_smss (tc))
- {
- if (tcp_available_output_snd_space (tc) < tc->snd_mss)
- return 0;
- tcp_fastrecovery_1_smss_on (tc);
- return tc->snd_mss;
+ snt_limited = tc->snd_nxt - tc->limited_transmit;
+ snd_space = clib_max (2 * tc->snd_mss - snt_limited, 0);
}
-
- return 0;
+ return tcp_round_snd_space (tc, snd_space);
}
u32
-tcp_session_send_space (transport_connection_t * trans_conn)
+tcp_snd_space (tcp_connection_t * tc)
{
- tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
- return clib_min (tcp_snd_space (tc),
- tc->snd_wnd - (tc->snd_nxt - tc->snd_una));
+ return tcp_snd_space_inline (tc);
}
-i32
-tcp_rcv_wnd_available (tcp_connection_t * tc)
+static u32
+tcp_session_send_space (transport_connection_t * trans_conn)
{
- return (i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las);
+ 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));
}
-u32
+static u32
tcp_session_tx_fifo_offset (transport_connection_t * trans_conn)
{
tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
return (tc->snd_nxt - tc->snd_una);
}
-void
+static void
tcp_update_time (f64 now, u8 thread_index)
{
- tcp_set_time_now (thread_index);
- tw_timer_expire_timers_16t_2w_512sl (&tcp_main.timer_wheels[thread_index],
- now);
- tcp_flush_frames_to_output (thread_index);
+ tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
+
+ 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);
}
/* *INDENT-OFF* */
.enable = vnet_tcp_enable_disable,
.bind = tcp_session_bind,
.unbind = tcp_session_unbind,
- .push_header = tcp_push_header,
+ .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,
.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_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_close (tc);
}
-void
+static void
tcp_timer_establish_handler (u32 conn_index)
{
tcp_connection_t *tc;
tcp_connection_cleanup (tc);
}
-void
+static void
tcp_timer_waitclose_handler (u32 conn_index)
{
u32 thread_index = vlib_get_thread_index ();
clib_warning ("FIN was sent and still in CLOSE WAIT. Weird!");
}
+ /* Make sure we don't try to send unsent data */
+ tcp_connection_timers_reset (tc);
+ tcp_cong_recovery_off (tc);
+ tc->snd_una_max = tc->snd_nxt = tc->snd_una;
tcp_send_fin (tc);
tc->state = TCP_STATE_LAST_ACK;
}
}
-void
+static void
tcp_initialize_timer_wheels (tcp_main_t * tm)
{
tw_timer_wheel_16t_2w_512sl_t *tw;
/* *INDENT-OFF* */
foreach_vlib_main (({
- tw = &tm->timer_wheels[ii];
+ 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* */
}
-clib_error_t *
+static clib_error_t *
tcp_main_enable (vlib_main_t * vm)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ u32 num_threads, n_workers, prealloc_conn_per_wrk;
+ tcp_connection_t *tc __attribute__ ((unused));
+ tcp_main_t *tm = vnet_get_tcp_main ();
clib_error_t *error = 0;
- u32 num_threads;
int thread;
- tcp_connection_t *tc __attribute__ ((unused));
- u32 preallocated_connections_per_thread;
if ((error = vlib_call_init_function (vm, ip_main_init)))
return error;
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;
- /*
- * Preallocate connections. Assume that thread 0 won't
- * use preallocated threads when running multi-core
- */
- if (num_threads == 1)
+ for (thread = 0; thread < num_threads; thread++)
{
- thread = 0;
- preallocated_connections_per_thread = tm->preallocated_connections;
- }
- else
- {
- thread = 1;
- preallocated_connections_per_thread =
- tm->preallocated_connections / (num_threads - 1);
- }
- for (; thread < num_threads; thread++)
- {
- if (preallocated_connections_per_thread)
- pool_init_fixed (tm->connections[thread],
- preallocated_connections_per_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_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);
+ tm->wrk_ctx[thread].vm = vlib_mains[thread];
+
+ /*
+ * 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 (tm->half_open_connections,
tm->preallocated_half_open_connections);
- /* Initialize per worker thread tx buffers (used for control messages) */
- vec_validate (tm->tx_buffers, num_threads - 1);
-
- /* Initialize timer wheels */
- vec_validate (tm->timer_wheels, num_threads - 1);
- tcp_initialize_timer_wheels (tm);
-
/* Initialize clocks per tick for TCP timestamp. Used to compute
* monotonically increasing timestamps. */
tm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
clib_spinlock_init (&tm->half_open_lock);
}
- vec_validate (tm->tx_frames[0], num_threads - 1);
- vec_validate (tm->tx_frames[1], num_threads - 1);
- vec_validate (tm->ip_lookup_tx_frames[0], num_threads - 1);
- vec_validate (tm->ip_lookup_tx_frames[1], num_threads - 1);
+ tcp_initialize_timer_wheels (tm);
tm->bytes_per_buffer = vlib_buffer_free_list_buffer_size
(vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
- vec_validate (tm->time_now, num_threads - 1);
return error;
}
tm->punt_unknown6 = is_add;
}
-clib_error_t *
+static clib_error_t *
tcp_init (vlib_main_t * vm)
{
tcp_main_t *tm = vnet_get_tcp_main ();
FIB_PROTOCOL_IP6, tcp6_output_node.index);
tcp_api_reference ();
+ tm->tx_pacing = 1;
return 0;
}
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat
- (input, "preallocated-connections %d",
- &tm->preallocated_connections))
+ 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
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
ip4_address_t * hi_addr, u32 fib_index,
int is_del);
- memset (&prefix, 0, sizeof (prefix));
+ clib_memset (&prefix, 0, sizeof (prefix));
fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id);
fib_node_index_t fei;
u32 sw_if_index;
- memset (&prefix, 0, sizeof (prefix));
+ clib_memset (&prefix, 0, sizeof (prefix));
fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
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;
- memset (dummy_tc, 0, sizeof (*dummy_tc));
+ 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);
-#else
- trace = 0;
- trace_len = 0;
#endif
for (i = 0; i < trace_len; i++)
Code Review / vpp.git / blobdiff