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|
/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* 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/session/application.h>
#include <vnet/session/session.h>
u8 *
format_session_fifos (u8 * s, va_list * args)
{
session_t *ss = va_arg (*args, session_t *);
int verbose = va_arg (*args, int);
session_event_t _e, *e = &_e;
u8 found;
if (!ss->rx_fifo || !ss->tx_fifo)
return s;
s = format (s, " Rx fifo: %U", format_svm_fifo, ss->rx_fifo, verbose);
if (verbose > 2 && ss->rx_fifo->has_event)
{
found = session_node_lookup_fifo_event (ss->rx_fifo, e);
s = format (s, " session node event: %s\n",
found ? "found" : "not found");
}
s = format (s, " Tx fifo: %U", format_svm_fifo, ss->tx_fifo, verbose);
if (verbose > 2 && ss->tx_fifo->has_event)
{
found = session_node_lookup_fifo_event (ss->tx_fifo, e);
s = format (s, " session node event: %s\n",
found ? "found" : "not found");
}
return s;
}
/**
* Format stream session as per the following format
*
* verbose:
* "Connection", "Rx fifo", "Tx fifo", "Session Index"
* non-verbose:
* "Connection"
*/
u8 *
format_session (u8 * s, va_list * args)
{
session_t *ss = va_arg (*args, session_t *);
int verbose = va_arg (*args, int);
u32 tp = session_get_transport_proto (ss);
u8 *str = 0;
if (ss->session_state >= SESSION_STATE_TRANSPORT_DELETED)
{
s = format (s, "[%u:%u] CLOSED", ss->thread_index, ss->session_index);
return s;
}
if (verbose == 1)
{
u8 post_accept = ss->session_state >= SESSION_STATE_ACCEPTING;
u8 hasf = post_accept
|| session_transport_service_type (ss) == TRANSPORT_SERVICE_CL;
u32 rxf, txf;
rxf = hasf ? svm_fifo_max_dequeue (ss->rx_fifo) : 0;
txf = hasf ? svm_fifo_max_dequeue (ss->tx_fifo) : 0;
str = format (0, "%-10u%-10u", rxf, txf);
}
if (ss->session_state >= SESSION_STATE_ACCEPTING
|| ss->session_state == SESSION_STATE_CREATED)
{
s = format (s, "%U", format_transport_connection, tp,
ss->connection_index, ss->thread_index, verbose);
if (verbose == 1)
s = format (s, "%v", str);
if (verbose > 1)
s = format (s, "%U", format_session_fifos, ss, verbose);
}
else if (ss->session_state == SESSION_STATE_LISTENING)
{
s = format (s, "%U%v", format_transport_listen_connection,
tp, ss->connection_index, ss->thread_index, verbose, str);
if (verbose > 1)
s = format (s, "\n%U", format_session_fifos, ss, verbose);
}
else if (ss->session_state == SESSION_STATE_CONNECTING)
{
s = format (s, "%-40U%v", format_transport_half_open_connection,
tp, ss->connection_index, ss->thread_index, str);
}
else
{
clib_warning ("Session in state: %d!", ss->session_state);
}
vec_free (str);
return s;
}
uword
unformat_stream_session_id (unformat_input_t * input, va_list * args)
{
u8 *proto = va_arg (*args, u8 *);
u32 *fib_index = va_arg (*args, u32 *);
ip46_address_t *lcl = va_arg (*args, ip46_address_t *);
ip46_address_t *rmt = va_arg (*args, ip46_address_t *);
u16 *lcl_port = va_arg (*args, u16 *);
u16 *rmt_port = va_arg (*args, u16 *);
u8 *is_ip4 = va_arg (*args, u8 *);
u8 tuple_is_set = 0;
u32 vrf = ~0;
clib_memset (lcl, 0, sizeof (*lcl));
clib_memset (rmt, 0, sizeof (*rmt));
if (unformat (input, "tcp"))
{
*proto = TRANSPORT_PROTO_TCP;
}
else if (unformat (input, "udp"))
{
*proto = TRANSPORT_PROTO_UDP;
}
else
return 0;
if (unformat (input, "vrf %u", &vrf))
;
if (unformat (input, "%U:%d->%U:%d", unformat_ip4_address, &lcl->ip4,
lcl_port, unformat_ip4_address, &rmt->ip4, rmt_port))
{
*is_ip4 = 1;
tuple_is_set = 1;
}
else if (unformat (input, "%U:%d->%U:%d", unformat_ip6_address, &lcl->ip6,
lcl_port, unformat_ip6_address, &rmt->ip6, rmt_port))
{
*is_ip4 = 0;
tuple_is_set = 1;
}
if (vrf != ~0)
{
fib_protocol_t fib_proto;
fib_proto = *is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
*fib_index = fib_table_find (fib_proto, vrf);
}
return tuple_is_set;
}
uword
unformat_session_state (unformat_input_t * input, va_list * args)
{
session_state_t *state = va_arg (*args, session_state_t *);
u8 *state_vec = 0;
int rv = 0;
#define _(sym, str) \
if (unformat (input, str)) \
{ \
*state = SESSION_STATE_ ## sym; \
rv = 1; \
goto done; \
}
foreach_session_state
#undef _
done:
vec_free (state_vec);
return rv;
}
uword
unformat_session (unformat_input_t * input, va_list * args)
{
session_t **result = va_arg (*args, session_t **);
u32 lcl_port = 0, rmt_port = 0, fib_index = 0;
ip46_address_t lcl, rmt;
session_t *s;
u8 proto = ~0;
u8 is_ip4 = 0;
if (!unformat (input, "%U", unformat_stream_session_id, &proto, &fib_index,
&lcl, &rmt, &lcl_port, &rmt_port, &is_ip4))
return 0;
if (is_ip4)
s = session_lookup_safe4 (fib_index, &lcl.ip4, &rmt.ip4,
clib_host_to_net_u16 (lcl_port),
clib_host_to_net_u16 (rmt_port), proto);
else
s = session_lookup_safe6 (fib_index, &lcl.ip6, &rmt.ip6,
clib_host_to_net_u16 (lcl_port),
clib_host_to_net_u16 (rmt_port), proto);
if (s)
{
*result = s;
session_pool_remove_peeker (s->thread_index);
return 1;
}
return 0;
}
uword
unformat_transport_connection (unformat_input_t * input, va_list * args)
{
transport_connection_t **result = va_arg (*args, transport_connection_t **);
u32 suggested_proto = va_arg (*args, u32);
transport_connection_t *tc;
u8 proto = ~0;
ip46_address_t lcl, rmt;
u32 lcl_port = 0, rmt_port = 0, fib_index = 0;
u8 is_ip4 = 0;
if (!unformat (input, "%U", unformat_stream_session_id, &fib_index, &proto,
&lcl, &rmt, &lcl_port, &rmt_port, &is_ip4))
return 0;
proto = (proto == (u8) ~ 0) ? suggested_proto : proto;
if (proto == (u8) ~ 0)
return 0;
if (is_ip4)
tc = session_lookup_connection4 (fib_index, &lcl.ip4, &rmt.ip4,
clib_host_to_net_u16 (lcl_port),
clib_host_to_net_u16 (rmt_port), proto);
else
tc = session_lookup_connection6 (fib_index, &lcl.ip6, &rmt.ip6,
clib_host_to_net_u16 (lcl_port),
clib_host_to_net_u16 (rmt_port), proto);
if (tc)
{
*result = tc;
return 1;
}
return 0;
}
static void
session_cli_show_all_sessions (vlib_main_t * vm, int verbose)
{
session_main_t *smm = &session_main;
u32 n_closed = 0, thread_index;
session_t *pool, *s;
for (thread_index = 0; thread_index < vec_len (smm->wrk); thread_index++)
{
pool = smm->wrk[thread_index].sessions;
if (!pool_elts (pool))
{
vlib_cli_output (vm, "Thread %d: no sessions", thread_index);
continue;
}
if (!verbose)
{
vlib_cli_output (vm, "Thread %d: %d sessions", thread_index,
pool_elts (pool));
continue;
}
if (pool_elts (pool) > 50)
{
vlib_cli_output (vm, "Thread %u: %d sessions. Verbose output "
"suppressed. For more details use filters.",
thread_index, pool_elts (pool));
continue;
}
if (verbose == 1)
vlib_cli_output (vm, "%s%-50s%-15s%-10s%-10s",
thread_index ? "\n" : "",
"Connection", "State", "Rx-f", "Tx-f");
/* *INDENT-OFF* */
pool_foreach(s, pool, ({
if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
{
n_closed += 1;
continue;
}
vlib_cli_output (vm, "%U", format_session, s, verbose);
}));
/* *INDENT-ON* */
if (!n_closed)
vlib_cli_output (vm, "Thread %d: active sessions %u", thread_index,
pool_elts (pool) - n_closed);
else
vlib_cli_output (vm, "Thread %d: active sessions %u closed %u",
thread_index, pool_elts (pool) - n_closed, n_closed);
}
}
static int
session_cli_filter_check (session_t * s, session_state_t * states,
transport_proto_t tp)
{
if (states)
{
session_state_t *state;
vec_foreach (state, states) if (s->session_state == *state)
goto check_transport;
return 0;
}
check_transport:
if (tp != TRANSPORT_N_PROTO && session_get_transport_proto (s) != tp)
return 0;
return 1;
}
static void
session_cli_show_session_filter (vlib_main_t * vm, u32 thread_index,
u32 start, u32 end, session_state_t * states,
transport_proto_t tp, int verbose)
{
u8 output_suppressed = 0;
session_worker_t *wrk;
session_t *pool, *s;
u32 count = 0, max_index;
int i;
wrk = session_main_get_worker_if_valid (thread_index);
if (!wrk)
{
vlib_cli_output (vm, "invalid thread index %u", thread_index);
return;
}
pool = wrk->sessions;
if (tp == TRANSPORT_N_PROTO && states == 0 && !verbose
&& (start == 0 && end == ~0))
{
vlib_cli_output (vm, "Thread %d: %u sessions", thread_index,
pool_elts (pool));
return;
}
max_index = pool_len (pool) ? pool_len (pool) - 1 : 0;
for (i = start; i <= clib_min (end, max_index); i++)
{
if (pool_is_free_index (pool, i))
continue;
s = pool_elt_at_index (pool, i);
if (session_cli_filter_check (s, states, tp))
{
count += 1;
if (verbose)
{
if (count > 50 || (verbose > 1 && count > 10))
{
output_suppressed = 1;
continue;
}
if (s->session_state < SESSION_STATE_TRANSPORT_DELETED)
vlib_cli_output (vm, "%U", format_session, s, verbose);
}
}
}
if (!output_suppressed)
vlib_cli_output (vm, "Thread %d: %u sessions matched filter",
thread_index, count);
else
vlib_cli_output (vm, "Thread %d: %u sessions matched filter. Not all"
" shown. Use finer grained filter.", thread_index,
count);
}
static void
session_cli_print_transport_protos (vlib_main_t * vm)
{
#define _(sym, str, sstr) vlib_cli_output (vm, str);
foreach_transport_proto
#undef _
}
static void
session_cli_print_session_states (vlib_main_t * vm)
{
#define _(sym, str) vlib_cli_output (vm, str);
foreach_session_state
#undef _
}
static clib_error_t *
show_session_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
u8 one_session = 0, do_listeners = 0, sst, do_elog = 0, do_filter = 0;
u32 track_index, thread_index = 0, start = 0, end = ~0, session_index;
unformat_input_t _line_input, *line_input = &_line_input;
transport_proto_t transport_proto = TRANSPORT_N_PROTO;
session_state_t state = SESSION_N_STATES, *states = 0;
session_main_t *smm = &session_main;
clib_error_t *error = 0;
app_worker_t *app_wrk;
u32 transport_index;
const u8 *app_name;
int verbose = 0;
session_t *s;
session_cli_return_if_not_enabled ();
if (!unformat_user (input, unformat_line_input, line_input))
{
session_cli_show_all_sessions (vm, 0);
return 0;
}
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "verbose %d", &verbose))
;
else if (unformat (line_input, "verbose"))
verbose = 1;
else if (unformat (line_input, "listeners %U", unformat_transport_proto,
&transport_proto))
do_listeners = 1;
else if (unformat (line_input, "%U", unformat_session, &s))
{
one_session = 1;
}
else if (unformat (line_input, "thread %u index %u", &thread_index,
&session_index))
{
s = session_get_if_valid (session_index, thread_index);
if (!s)
{
vlib_cli_output (vm, "session is not allocated");
goto done;
}
one_session = 1;
}
else if (unformat (line_input, "thread %u", &thread_index))
{
do_filter = 1;
}
else
if (unformat (line_input, "state %U", unformat_session_state, &state))
{
vec_add1 (states, state);
do_filter = 1;
}
else if (unformat (line_input, "proto %U index %u",
unformat_transport_proto, &transport_proto,
&transport_index))
{
transport_connection_t *tc;
tc = transport_get_connection (transport_proto, transport_index,
thread_index);
if (!tc)
{
vlib_cli_output (vm, "transport connection %u thread %u is not"
" allocated", transport_index, thread_index);
goto done;
}
s = session_get_if_valid (tc->s_index, thread_index);
if (!s)
{
vlib_cli_output (vm, "session for transport connection %u "
"thread %u does not exist", transport_index,
thread_index);
goto done;
}
one_session = 1;
}
else if (unformat (line_input, "proto %U", unformat_transport_proto,
&transport_proto))
do_filter = 1;
else if (unformat (line_input, "range %u %u", &start, &end))
do_filter = 1;
else if (unformat (line_input, "range %u", &start))
{
end = start + 50;
do_filter = 1;
}
else if (unformat (line_input, "elog"))
do_elog = 1;
else if (unformat (line_input, "protos"))
{
session_cli_print_transport_protos (vm);
goto done;
}
else if (unformat (line_input, "states"))
{
session_cli_print_session_states (vm);
goto done;
}
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, line_input);
goto done;
}
}
if (one_session)
{
u8 *str = format (0, "%U", format_session, s, 3);
if (do_elog && s->session_state != SESSION_STATE_LISTENING)
{
elog_main_t *em = &vm->elog_main;
transport_connection_t *tc;
f64 dt;
tc = session_get_transport (s);
track_index = transport_elog_track_index (tc);
dt = (em->init_time.cpu - vm->clib_time.init_cpu_time)
* vm->clib_time.seconds_per_clock;
if (track_index != ~0)
str = format (str, " session elog:\n%U", format_elog_track, em,
dt, track_index);
}
vlib_cli_output (vm, "%v", str);
vec_free (str);
goto done;
}
if (do_listeners)
{
sst = session_type_from_proto_and_ip (transport_proto, 1);
vlib_cli_output (vm, "%-50s%-24s", "Listener", "App");
/* *INDENT-OFF* */
pool_foreach (s, smm->wrk[0].sessions, ({
if (s->session_state != SESSION_STATE_LISTENING
|| s->session_type != sst)
continue;
app_wrk = app_worker_get (s->app_wrk_index);
app_name = application_name_from_index (app_wrk->app_index);
vlib_cli_output (vm, "%U%-25v%", format_session, s, 0,
app_name);
}));
/* *INDENT-ON* */
goto done;
}
if (do_filter)
{
if (end < start)
{
error = clib_error_return (0, "invalid range start: %u end: %u",
start, end);
goto done;
}
session_cli_show_session_filter (vm, thread_index, start, end, states,
transport_proto, verbose);
goto done;
}
session_cli_show_all_sessions (vm, verbose);
done:
unformat_free (line_input);
vec_free (states);
return error;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_show_session_command) =
{
.path = "show session",
.short_help = "show session [verbose [n]] [listeners <proto>] "
"[<session-id> [elog]] [thread <n> [index <n>] "
"[proto <proto>] [state <state>] [range <min> [<max>]] "
"[protos] [states] ",
.function = show_session_command_fn,
};
/* *INDENT-ON* */
static int
clear_session (session_t * s)
{
app_worker_t *server_wrk = app_worker_get (s->app_wrk_index);
app_worker_close_notify (server_wrk, s);
return 0;
}
static clib_error_t *
clear_session_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
session_main_t *smm = &session_main;
u32 thread_index = 0, clear_all = 0;
session_worker_t *wrk;
u32 session_index = ~0;
session_t *session;
if (!smm->is_enabled)
{
return clib_error_return (0, "session layer is not enabled");
}
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "thread %d", &thread_index))
;
else if (unformat (input, "session %d", &session_index))
;
else if (unformat (input, "all"))
clear_all = 1;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
if (!clear_all && session_index == ~0)
return clib_error_return (0, "session <nn> required, but not set.");
if (session_index != ~0)
{
session = session_get_if_valid (session_index, thread_index);
if (!session)
return clib_error_return (0, "no session %d on thread %d",
session_index, thread_index);
clear_session (session);
}
if (clear_all)
{
/* *INDENT-OFF* */
vec_foreach (wrk, smm->wrk)
{
pool_foreach(session, wrk->sessions, ({
clear_session (session);
}));
};
/* *INDENT-ON* */
}
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (clear_session_command, static) =
{
.path = "clear session",
.short_help = "clear session thread <thread> session <index>",
.function = clear_session_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
show_session_fifo_trace_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
session_t *s = 0;
u8 is_rx = 0, *str = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "%U", unformat_session, &s))
;
else if (unformat (input, "rx"))
is_rx = 1;
else if (unformat (input, "tx"))
is_rx = 0;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
if (!SVM_FIFO_TRACE)
{
vlib_cli_output (vm, "fifo tracing not enabled");
return 0;
}
if (!s)
{
vlib_cli_output (vm, "could not find session");
return 0;
}
str = is_rx ?
svm_fifo_dump_trace (str, s->rx_fifo) :
svm_fifo_dump_trace (str, s->tx_fifo);
vlib_cli_output (vm, "%v", str);
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_session_fifo_trace_command, static) =
{
.path = "show session fifo trace",
.short_help = "show session fifo trace <session>",
.function = show_session_fifo_trace_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
session_replay_fifo_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
session_t *s = 0;
u8 is_rx = 0, *str = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "%U", unformat_session, &s))
;
else if (unformat (input, "rx"))
is_rx = 1;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
if (!SVM_FIFO_TRACE)
{
vlib_cli_output (vm, "fifo tracing not enabled");
return 0;
}
if (!s)
{
vlib_cli_output (vm, "could not find session");
return 0;
}
str = is_rx ?
svm_fifo_replay (str, s->rx_fifo, 0, 1) :
svm_fifo_replay (str, s->tx_fifo, 0, 1);
vlib_cli_output (vm, "%v", str);
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (session_replay_fifo_trace_command, static) =
{
.path = "session replay fifo",
.short_help = "session replay fifo <session>",
.function = session_replay_fifo_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
session_enable_disable_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
u8 is_en = 1;
clib_error_t *error;
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, "expected enable | disable");
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "enable"))
is_en = 1;
else if (unformat (line_input, "disable"))
is_en = 0;
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, line_input);
unformat_free (line_input);
return error;
}
}
unformat_free (line_input);
return vnet_session_enable_disable (vm, is_en);
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (session_enable_disable_command, static) =
{
.path = "session",
.short_help = "session [enable|disable]",
.function = session_enable_disable_fn,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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