* limitations under the License.
*/
+/**
+ * @file
+ * @brief TCP host stack utilities
+ */
+
#include <vnet/tcp/tcp.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;
tcp_send_fin (tc);
tc->state = TCP_STATE_LAST_ACK;
break;
+ case TCP_STATE_FIN_WAIT_1:
+ break;
default:
- clib_warning ("shouldn't be here");
+ clib_warning ("state: %u", tc->state);
}
TCP_EVT_DBG (TCP_EVT_STATE_CHANGE, tc);
/* *INDENT-OFF* */
foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ ,
({
- return ip_interface_address_get_address (lm6, ia);
+ ip6_address_t *rv;
+ rv = ip_interface_address_get_address (lm6, ia);
+ /* Trying to use a link-local ip6 src address is a fool's errand */
+ if (!ip6_address_is_link_local_unicast (rv))
+ return rv;
}));
/* *INDENT-ON* */
}
prefix.fp_len = rmt->is_ip4 ? 32 : 128;
fib_index = fib_table_find (prefix.fp_proto, rmt->vrf);
+ if (fib_index == (u32) ~ 0)
+ {
+ clib_warning ("no fib table");
+ return -1;
+ }
+
fei = fib_table_lookup (fib_index, &prefix);
/* Couldn't find route to destination. Bail out. */
else
{
ip6 = ip_interface_get_first_ip (sw_if_index, 0);
+ if (ip6 == 0)
+ {
+ clib_warning ("no routable ip6 addresses on %U",
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ sw_if_index);
+ return -1;
+ }
+
clib_memcpy (&lcl_addr.ip6, ip6, sizeof (*ip6));
}
}
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, " scoreboard: %U\n", format_tcp_scoreboard, &tc->sack_sb);
+ s = format (s, " scoreboard: %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);
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)
{
if (tc)
s = format (s, "%U", format_tcp_connection, tc, verbose);
else
- s = format (s, "empty");
+ s = format (s, "empty\n");
return s;
}
format_tcp_sack_hole (u8 * s, va_list * args)
{
sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *);
- s = format (s, "[%u, %u]", hole->start, hole->end);
+ 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;
}
format_tcp_scoreboard (u8 * s, va_list * args)
{
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;
s = format (s, "sacked_bytes %u last_sacked_bytes %u lost_bytes %u\n",
sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes);
while (hole)
{
- s = format (s, "%U", format_tcp_sack_hole, hole);
+ s = format (s, "%U", format_tcp_sack_hole, hole, tc);
hole = scoreboard_next_hole (sb, hole);
}
return tc->snd_wnd <= snd_space ? tc->snd_wnd : 0;
}
- /* If we can't write at least a segment, don't try at all */
+ /* If not snd_wnd constrained and we can't write at least a segment,
+ * don't try at all */
if (PREDICT_FALSE (snd_space < tc->snd_mss))
- {
- if (snd_space > clib_min (tc->mss, tc->rcv_opts.mss) - TCP_HDR_LEN_MAX)
- return snd_space;
- return 0;
- }
+ return 0;
/* round down to mss multiple */
return snd_space - (snd_space % tc->snd_mss);
if (PREDICT_TRUE (tcp_in_cong_recovery (tc) == 0))
{
- snd_space = tcp_available_snd_space (tc);
+ 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 (tcp_in_recovery (tc))
{
tc->snd_nxt = tc->snd_una_max;
- snd_space = tcp_available_wnd (tc) - tc->snd_rxt_bytes
+ 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 in fast recovery, send 1 SMSS if wnd allows */
- if (tcp_in_fastrecovery (tc)
- && tcp_available_snd_space (tc) && !tcp_fastrecovery_sent_1_smss (tc))
+ /* 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;
}
tcp_session_send_space (transport_connection_t * trans_conn)
{
tcp_connection_t *tc = (tcp_connection_t *) trans_conn;
- return tcp_snd_space (tc);
+ return clib_min (tcp_snd_space (tc),
+ tc->snd_wnd - (tc->snd_nxt - tc->snd_una));
}
i32
tcp_connection_t *tc;
tc = tcp_half_open_connection_get (conn_index);
+ if (tc)
+ {
+ ASSERT (tc->state == TCP_STATE_SYN_SENT);
+ stream_session_connect_notify (&tc->connection, 1 /* fail */ );
+ }
+ else
+ {
+ tc = tcp_connection_get (conn_index, vlib_get_thread_index ());
+ ASSERT (tc->state == TCP_STATE_SYN_RCVD);
+ }
tc->timers[TCP_TIMER_ESTABLISH] = TCP_TIMER_HANDLE_INVALID;
-
- ASSERT (tc->state == TCP_STATE_SYN_SENT);
- stream_session_connect_notify (&tc->connection, 1 /* fail */ );
tcp_connection_cleanup (tc);
}
pi->unformat_pg_edit = unformat_pg_tcp_header;
ip4_register_protocol (IP_PROTOCOL_TCP, tcp4_input_node.index);
+ ip6_register_protocol (IP_PROTOCOL_TCP, tcp6_input_node.index);
/* Register as transport with session layer */
session_register_transport (TRANSPORT_PROTO_TCP, 1, &tcp_proto);
tm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
/ TCP_TSTAMP_RESOLUTION;
+ if (tm->local_endpoints_table_buckets == 0)
+ tm->local_endpoints_table_buckets = 250000;
+ if (tm->local_endpoints_table_memory == 0)
+ tm->local_endpoints_table_memory = 512 << 20;
+
clib_bihash_init_24_8 (&tm->local_endpoints_table, "local endpoint table",
- 1000000 /* $$$$ config parameter nbuckets */ ,
- (512 << 20) /*$$$ config parameter table size */ );
+ tm->local_endpoints_table_buckets,
+ tm->local_endpoints_table_memory);
/* Initialize [port-allocator] random number seed */
tm->port_allocator_seed = (u32) clib_cpu_time_now ();
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;
}
{
tcp_main_t *tm = vnet_get_tcp_main ();
tm->is_enabled = 0;
+ tcp_api_reference ();
return 0;
}
tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
{
tcp_main_t *tm = vnet_get_tcp_main ();
+ u64 tmp;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
else if (unformat (input, "preallocated-half-open-connections %d",
&tm->preallocated_half_open_connections))
;
+ else if (unformat (input, "local-endpoints-table-memory %U",
+ unformat_memory_size, &tmp))
+ {
+ if (tmp >= 0x100000000)
+ return clib_error_return (0, "memory size %llx (%lld) too large",
+ tmp, tmp);
+ tm->local_endpoints_table_memory = tmp;
+ }
+ else if (unformat (input, "local-endpoints-table-buckets %d",
+ &tm->local_endpoints_table_buckets))
+ ;
+
+
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
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);
+
+ 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;
+
+ 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;
+
+ /* Add a proxy neighbor discovery entry for this address */
+ ip6_neighbor_proxy_add_del (sw_if_index, start, 0 /* is_del */ );
+
+ /* 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)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
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)
{
v4set = 1;
}
else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start,
- unformat_ip4_address, &v6end))
+ unformat_ip6_address, &v6end))
v6set = 1;
else if (unformat (input, "%U", unformat_ip6_address, &v6start))
{
memcpy (&v6end, &v6start, sizeof (v4start));
v6set = 1;
}
+ else if (unformat (input, "fib-table %d", &table_id))
+ ;
else
break;
}
if (v4set)
{
- u32 tmp;
-
- do
+ rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end,
+ table_id);
+ switch (rv)
{
- vec_add1 (tm->ip4_src_addresses, v4start);
- tmp = clib_net_to_host_u32 (v4start.as_u32);
- tmp++;
- v4start.as_u32 = clib_host_to_net_u32 (tmp);
+ 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;
}
- while (clib_host_to_net_u32 (v4start.as_u32) <=
- clib_host_to_net_u32 (v4end.as_u32));
}
if (v6set)
{
- clib_warning ("v6 src address list unimplemented...");
+ 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;
}
Code Review / vpp.git / blobdiff