blob: ada2ac0b4d575fdb25848259ca1d37cecb3f1bf2 [file] [log] [blame]
/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/tcp/tcp.h>
#include <vnet/tcp/tcp_inlines.h>
#include <vnet/dpo/receive_dpo.h>
#include <vnet/ip-neighbor/ip_neighbor.h>
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_cfg_flags_str[] = {
#define _(sym, str) str,
foreach_tcp_cfg_flag
#undef _
};
static u8 *
format_tcp_cfg_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_CFG_N_FLAG_BITS; i++)
if (tc->cfg_flags & (1 << i))
last = i;
for (i = 0; i < last; i++)
{
if (tc->cfg_flags & (1 << i))
s = format (s, "%s, ", tcp_cfg_flags_str[i]);
}
if (last >= 0)
s = format (s, "%s", tcp_cfg_flags_str[last]);
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), prr_space = 0;
s = format (s, "%U ", format_tcp_congestion_status, tc);
s = format (s, "algo %s cwnd %u ssthresh %u bytes_acked %u\n",
tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked);
s = format (s, "%Ucc space %u prev_cwnd %u prev_ssthresh %u\n",
format_white_space, indent, tcp_available_cc_snd_space (tc),
tc->prev_cwnd, tc->prev_ssthresh);
s = format (s, "%Usnd_cong %u dupack %u limited_tx %u\n",
format_white_space, indent, tc->snd_congestion - tc->iss,
tc->rcv_dupacks, tc->limited_transmit - tc->iss);
s = format (s, "%Urxt_bytes %u rxt_delivered %u rxt_head %u rxt_ts %u\n",
format_white_space, indent, tc->snd_rxt_bytes,
tc->rxt_delivered, tc->rxt_head - tc->iss,
tcp_time_now_w_thread (tc->c_thread_index) - tc->snd_rxt_ts);
if (tcp_in_fastrecovery (tc))
prr_space = tcp_fastrecovery_prr_snd_space (tc);
s = format (s, "%Uprr_start %u prr_delivered %u prr space %u\n",
format_white_space, indent, tc->prr_start - tc->iss,
tc->prr_delivered, prr_space);
return s;
}
static u8 *
format_tcp_stats (u8 * s, va_list * args)
{
tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
u32 indent = format_get_indent (s);
s = format (s, "in segs %lu dsegs %lu bytes %lu dupacks %u\n",
tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in);
s = format (s, "%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n",
format_white_space, indent, tc->segs_out,
tc->data_segs_out, tc->bytes_out, tc->dupacks_out);
s = format (s, "%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n",
format_white_space, indent, tc->fr_occurences,
tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans,
tcp_time_now_us (tc->c_thread_index) - tc->start_ts);
s = format (s, "%Uerr wnd data below %u above %u ack below %u above %u",
format_white_space, indent, tc->errors.below_data_wnd,
tc->errors.above_data_wnd, tc->errors.below_ack_wnd,
tc->errors.above_ack_wnd);
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 cfg: %U flags: %U timers: %U\n", tc->c_c_index,
format_tcp_cfg_flags, tc, 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",
tcp_flight_size (tc), tcp_available_output_snd_space (tc),
tcp_rcv_wnd_available (tc));
s = format (s, " tsval_recent %u\n", tc->tsval_recent);
s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u",
tc->rcv_opts.tsecr, tc->tsecr_last_ack,
tcp_time_now () - tc->tsval_recent_age);
s = format (s, " snd_mss %u\n", tc->snd_mss);
s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %.4f",
tc->rto, tc->rto_boff, tc->srtt, tc->mrtt_us * 1000, tc->rttvar,
tc->rtt_ts);
s = format (s, " rtt_seq %u\n", tc->rtt_seq - tc->iss);
s = format (s, " next_node %u opaque 0x%x fib_index %u\n",
tc->next_node_index, tc->next_node_opaque, tc->c_fib_index);
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);
s = format (s, " stats: %U\n", format_tcp_stats, tc);
}
if (vec_len (tc->snd_sacks))
s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc);
return s;
}
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;
}
u8 *
format_tcp_sacks (u8 * s, va_list * args)
{
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;
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;
}
u8 *
format_tcp_rcv_sacks (u8 * s, va_list * args)
{
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;
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)
{
block = &sacks[len - 1];
s = format (s, " start %u end %u", block->start - tc->iss,
block->end - tc->iss);
}
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;
}
u8 *
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;
u32 indent = format_get_indent (s);
s = format (s, "sacked %u last_sacked %u lost %u last_lost %u"
" rxt_sacked %u\n",
sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes,
sb->last_lost_bytes, sb->rxt_sacked);
s = format (s, "%Ulast_delivered %u high_sacked %u is_reneging %u\n",
format_white_space, indent, sb->last_bytes_delivered,
sb->high_sacked - tc->iss, sb->is_reneging);
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%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)
{
s = format (s, "%U", format_tcp_sack_hole, hole, tc);
hole = scoreboard_next_hole (sb, hole);
}
return s;
}
/**
* \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)
{
u32 start_host_byte_order, end_host_byte_order;
fib_prefix_t prefix;
fib_node_index_t fei;
u32 fib_index = 0;
u32 sw_if_index;
int rv;
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);
/* Configure proxy arp across the range */
rv = ip4_neighbor_proxy_add (fib_index, start, end);
if (rv)
return rv;
rv = ip4_neighbor_proxy_enable (sw_if_index);
if (rv)
return rv;
do
{
dpo_id_t dpo = DPO_INVALID;
vec_add1 (tcp_cfg.ip4_src_addrs, 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)
{
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 (tcp_cfg.ip6_src_addrs, 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 (sw_if_index, start);
/* 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_fn (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_fn,
};
/* *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;
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* */
static clib_error_t *
show_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
tcp_main_t *tm = vnet_get_tcp_main ();
tcp_worker_ctx_t *wrk;
u32 thread;
if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
return clib_error_return (0, "unknown input `%U'", format_unformat_error,
input);
for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
{
wrk = tcp_get_worker (thread);
vlib_cli_output (vm, "Thread %u:\n", thread);
if (clib_fifo_elts (wrk->pending_timers))
vlib_cli_output (vm, " %lu pending timers",
clib_fifo_elts (wrk->pending_timers));
#define _(name,type,str) \
if (wrk->stats.name) \
vlib_cli_output (vm, " %lu %s", wrk->stats.name, str);
foreach_tcp_wrk_stat
#undef _
}
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_tcp_stats_command, static) =
{
.path = "show tcp stats",
.short_help = "show tcp stats",
.function = show_tcp_stats_fn,
};
/* *INDENT-ON* */
static clib_error_t *
clear_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
tcp_main_t *tm = vnet_get_tcp_main ();
tcp_worker_ctx_t *wrk;
u32 thread;
if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
return clib_error_return (0, "unknown input `%U'", format_unformat_error,
input);
for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
{
wrk = tcp_get_worker (thread);
clib_memset (&wrk->stats, 0, sizeof (wrk->stats));
}
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (clear_tcp_stats_command, static) =
{
.path = "clear tcp stats",
.short_help = "clear tcp stats",
.function = clear_tcp_stats_fn,
};
/* *INDENT-ON* */
static void
tcp_show_half_open (vlib_main_t * vm, u32 start, u32 end, u8 verbose)
{
tcp_main_t *tm = &tcp_main;
u8 output_suppressed = 0;
u32 n_elts, count = 0;
tcp_connection_t *tc;
int max_index, i;
n_elts = pool_elts (tm->half_open_connections);
max_index = pool_len (tm->half_open_connections) - 1;
if (verbose && end == ~0 && n_elts > 50)
{
vlib_cli_output (vm, "Too many connections, use range <start> <end>");
return;
}
if (!verbose)
{
vlib_cli_output (vm, "%u tcp half-open connections", n_elts);
return;
}
for (i = start; i <= clib_min (end, max_index); i++)
{
if (pool_is_free_index (tm->half_open_connections, i))
continue;
tc = pool_elt_at_index (tm->half_open_connections, i);
count += 1;
if (verbose)
{
if (count > 50 || (verbose > 1 && count > 10))
{
output_suppressed = 1;
continue;
}
}
vlib_cli_output (vm, "%U", format_tcp_connection, tc, verbose);
}
if (!output_suppressed)
vlib_cli_output (vm, "%u tcp half-open connections", n_elts);
else
vlib_cli_output (vm, "%u tcp half-open connections matched. Output "
"suppressed. Use finer grained filter.", count);
}
static clib_error_t *
show_tcp_half_open_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
u32 start, end = ~0, verbose = 0;
clib_error_t *error = 0;
session_cli_return_if_not_enabled ();
if (!unformat_user (input, unformat_line_input, line_input))
{
tcp_show_half_open (vm, 0, ~0, 0);
return 0;
}
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "range %u %u", &start, &end))
;
else if (unformat (line_input, "verbose %d"), &verbose)
;
else if (unformat (line_input, "verbose"))
verbose = 1;
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
goto done;
}
}
if (start > end)
{
error = clib_error_return (0, "invalid range start: %u end: %u", start,
end);
goto done;
}
tcp_show_half_open (vm, start, end, verbose);
done:
unformat_free (line_input);
return error;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_tcp_half_open_command, static) =
{
.path = "show tcp half-open",
.short_help = "show tcp half-open [verbose <n>] [range <start> <end>]",
.function = show_tcp_half_open_fn,
};
/* *INDENT-ON* */
uword
unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
{
tcp_cc_algorithm_type_e *result = va_arg (*va, tcp_cc_algorithm_type_e *);
tcp_main_t *tm = &tcp_main;
char *cc_algo_name;
u8 found = 0;
uword *p;
if (unformat (input, "%s", &cc_algo_name)
&& ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
{
*result = *p;
found = 1;
}
vec_free (cc_algo_name);
return found;
}
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)
{
u32 cwnd_multiplier, tmp_time, mtu;
uword memory_size;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "preallocated-connections %d",
&tcp_cfg.preallocated_connections))
;
else if (unformat (input, "preallocated-half-open-connections %d",
&tcp_cfg.preallocated_half_open_connections))
;
else if (unformat (input, "buffer-fail-fraction %f",
&tcp_cfg.buffer_fail_fraction))
;
else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
&memory_size))
{
if (memory_size >= 0x100000000)
{
return clib_error_return
(0, "max-rx-fifo %llu (0x%llx) too large", memory_size,
memory_size);
}
tcp_cfg.max_rx_fifo = memory_size;
}
else if (unformat (input, "min-rx-fifo %U", unformat_memory_size,
&memory_size))
{
if (memory_size >= 0x100000000)
{
return clib_error_return
(0, "min-rx-fifo %llu (0x%llx) too large", memory_size,
memory_size);
}
tcp_cfg.min_rx_fifo = memory_size;
}
else if (unformat (input, "mtu %u", &mtu))
tcp_cfg.default_mtu = mtu;
else if (unformat (input, "rwnd-min-update-ack %d",
&tcp_cfg.rwnd_min_update_ack))
;
else if (unformat (input, "initial-cwnd-multiplier %u",
&cwnd_multiplier))
tcp_cfg.initial_cwnd_multiplier = cwnd_multiplier;
else if (unformat (input, "no-tx-pacing"))
tcp_cfg.enable_tx_pacing = 0;
else if (unformat (input, "tso"))
tcp_cfg.allow_tso = 1;
else if (unformat (input, "no-csum-offload"))
tcp_cfg.csum_offload = 0;
else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
&tcp_cfg.cc_algo))
;
else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg))
;
else if (unformat (input, "closewait-time %u", &tmp_time))
tcp_cfg.closewait_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "timewait-time %u", &tmp_time))
tcp_cfg.timewait_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "finwait1-time %u", &tmp_time))
tcp_cfg.finwait1_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "finwait2-time %u", &tmp_time))
tcp_cfg.finwait2_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "lastack-time %u", &tmp_time))
tcp_cfg.lastack_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "closing-time %u", &tmp_time))
tcp_cfg.closing_time = tmp_time / TCP_TIMER_TICK;
else if (unformat (input, "cleanup-time %u", &tmp_time))
tcp_cfg.cleanup_time = tmp_time / 1000.0;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
return 0;
}
VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp");
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/