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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.
*/
#ifndef SRC_VNET_TCP_TCP_DEBUG_H_
#define SRC_VNET_TCP_TCP_DEBUG_H_
#include <vlib/vlib.h>
/**
* Build debugging infra unconditionally. Debug components controlled via
* debug configuration. Comes with some overhead so it's not recommended for
* production/performance scenarios. Takes priority over TCP_DEBUG_ENABLE.
*/
#define TCP_DEBUG_ALWAYS (0)
/**
* Build debugging infra only if enabled. Debug components controlled via
* macros that follow.
*/
#define TCP_DEBUG_ENABLE (0)
#define TCP_DEBUG_SM (0)
#define TCP_DEBUG_CC (0)
#define TCP_DEBUG_CS (0)
#define TCP_DEBUG_LC (0 || TCP_DEBUG_SM || TCP_DEBUG_CC || TCP_DEBUG_CS)
#define TCP_DEBUG (TCP_DEBUG_ALWAYS || TCP_DEBUG_ENABLE)
#define TCP_DEBUG_BUF_ALLOC (0)
#if TCP_DEBUG > 0
#define TRANSPORT_DEBUG (1)
#endif
#define TCP_CONCAT_HELPER(_a, _b) _a##_b
#define TCP_CC(_a, _b) TCP_CONCAT_HELPER(_a, _b)
#define tcp_evt_lvl(_evt) TCP_CC(_evt, _LVL)
#define tcp_evt_grp(_evt) TCP_CC(_evt, _GRP)
#define tcp_evt_handler(_evt, _args...) TCP_CC(_evt, _HANDLER) (_args)
#define tcp_evt_grp_dbg_lvl(_evt) tcp_dbg_main.grp_dbg_lvl[tcp_evt_grp (_evt)]
#define foreach_tcp_evt_grp \
_(LC, "life cycle") \
_(SM, "state machine") \
_(CC, "congestion control") \
_(CS, "cc stats") \
typedef enum tcp_evt_grp_
{
#define _(sym, str) TCP_EVT_GRP_ ## sym,
foreach_tcp_evt_grp
#undef _
TCP_EVT_N_GRP
} tcp_evt_grp_e;
typedef struct tcp_dbg_main_
{
u8 grp_dbg_lvl[TCP_EVT_N_GRP];
u32 *free_track_indices;
} tcp_dbg_main_t;
extern tcp_dbg_main_t tcp_dbg_main;
#define foreach_tcp_dbg_evt \
_(INIT, LC, 1, "init") \
_(DEALLOC, LC, 1, "dealloc") \
_(OPEN, LC, 1, "open") \
_(CLOSE, LC, 1, "close") \
_(BIND, LC, 1, "bind") \
_(UNBIND, LC, 1, "unbind") \
_(DELETE, LC, 1, "delete") \
_(SYN_RCVD, LC, 1, "SYN rcvd") \
_(STATE_CHANGE, LC, 1, "state change") \
_(SYN_SENT, SM, 1, "SYN sent") \
_(SYN_RXT, SM, 1, "SYN retransmit") \
_(SYNACK_SENT, SM, 1, "SYNACK sent") \
_(SYNACK_RCVD, SM, 1, "SYNACK rcvd") \
_(FIN_SENT, SM, 1, "FIN sent") \
_(FIN_RCVD, SM, 1, "FIN rcvd") \
_(RST_SENT, SM, 1, "RST sent") \
_(RST_RCVD, SM, 1, "RST rcvd") \
_(TIMER_POP, SM, 1, "timer pop") \
_(SEG_INVALID, SM, 2, "invalid segment") \
_(PAWS_FAIL, SM, 2, "failed paws check") \
_(ACK_RCV_ERR, SM, 2, "invalid ack") \
_(RCV_WND_SHRUNK, SM, 2, "shrunk rcv_wnd") \
_(ACK_SENT, SM, 3, "ACK sent") \
_(ACK_RCVD, SM, 3, "ACK rcvd") \
_(PKTIZE, SM, 3, "packetize") \
_(INPUT, SM, 3, "in") \
_(OUTPUT, SM, 4, "output") \
_(SND_WND, SM, 4, "snd_wnd update") \
_(CC_EVT, CC, 1, "cc event") \
_(CC_RTX, CC, 2, "retransmit") \
_(CC_PACK, CC, 2, "cc partial ack") \
_(DUPACK_SENT, CC, 2, "DUPACK sent") \
_(DUPACK_RCVD, CC, 2, "DUPACK rcvd") \
_(CC_SCOREBOARD, CC, 2, "scoreboard stats") \
_(CC_SACKS, CC, 2, "snd sacks stats") \
_(CC_INPUT, CC, 2, "ooo data delivered") \
_(CC_STAT, CS, 1, "cc stats") \
_(CC_RTO_STAT, CS, 1, "cc rto stats") \
typedef enum tcp_evt_types_
{
#define _(sym, grp, lvl, str) TCP_EVT_##sym,
foreach_tcp_dbg_evt
#undef _
} tcp_evt_types_e;
typedef enum tcp_evt_lvl_
{
#define _(sym, grp, lvl, str) TCP_EVT_## sym ## _LVL = lvl,
foreach_tcp_dbg_evt
#undef _
} tcp_evt_lvl_e;
typedef enum tcp_evt_to_grp_
{
#define _(sym, grp, lvl, str) TCP_EVT_ ## sym ## _GRP = TCP_EVT_GRP_ ## grp,
foreach_tcp_dbg_evt
#undef _
} tcp_evt_to_grp_e;
#if TCP_DEBUG_ALWAYS > 0
#define TCP_EVT(_evt, _args...) \
if (PREDICT_FALSE (tcp_evt_grp_dbg_lvl (_evt) >= tcp_evt_lvl (_evt))) \
tcp_evt_handler (_evt, _args)
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
#elif TCP_DEBUG_ENABLE > 0
#define TCP_EVT(_evt, _args...) tcp_evt_handler(_evt, _args)
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
#else
#define TCP_EVT(_evt, _args...)
#define TCP_DBG(_fmt, _args...)
#endif
void tcp_evt_track_register (elog_track_t * et);
void tcp_debug_init (void);
#define TCP_DECLARE_ETD(_tc, _e, _size) \
struct \
{ \
u32 data[_size]; \
} * ed; \
ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, _e, \
_tc->c_elog_track) \
/*
* Event handlers definitions
*/
#if TCP_DEBUG_LC || TCP_DEBUG_ALWAYS
/*
* Infra and evt track setup
*/
#define TCP_DBG_IP_TAG_LCL(_tc) \
{ \
if (_tc->c_is_ip4) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "lcl: %d.%d.%d.%d:%d", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->c_lcl_ip.ip4.as_u8[0]; \
ed->data[1] = _tc->c_lcl_ip.ip4.as_u8[1]; \
ed->data[2] = _tc->c_lcl_ip.ip4.as_u8[2]; \
ed->data[3] = _tc->c_lcl_ip.ip4.as_u8[3]; \
ed->data[4] = clib_net_to_host_u16(_tc->c_lcl_port); \
} \
}
#define TCP_DBG_IP_TAG_RMT(_tc) \
{ \
if (_tc->c_is_ip4) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "rmt: %d.%d.%d.%d:%d", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->c_rmt_ip.ip4.as_u8[0]; \
ed->data[1] = _tc->c_rmt_ip.ip4.as_u8[1]; \
ed->data[2] = _tc->c_rmt_ip.ip4.as_u8[2]; \
ed->data[3] = _tc->c_rmt_ip.ip4.as_u8[3]; \
ed->data[4] = clib_net_to_host_u16(_tc->c_rmt_port); \
} \
}
#define TCP_EVT_INIT_HANDLER(_tc, _is_l, ...) \
{ \
char *_fmt = _is_l ? "l[%d].%d:%d%c" : "[%d].%d:%d->.%d:%d%c"; \
if (_tc->c_is_ip4) \
{ \
_tc->c_elog_track.name = \
(char *) format (0, _fmt, _tc->c_thread_index, \
_tc->c_lcl_ip.ip4.as_u8[3], \
clib_net_to_host_u16(_tc->c_lcl_port), \
_tc->c_rmt_ip.ip4.as_u8[3], \
clib_net_to_host_u16(_tc->c_rmt_port), 0); \
} \
else \
_tc->c_elog_track.name = \
(char *) format (0, _fmt, _tc->c_thread_index, \
_tc->c_lcl_ip.ip6.as_u8[15], \
clib_net_to_host_u16(_tc->c_lcl_port), \
_tc->c_rmt_ip.ip6.as_u8[15], \
clib_net_to_host_u16(_tc->c_rmt_port), 0); \
tcp_evt_track_register (&_tc->c_elog_track); \
TCP_DBG_IP_TAG_LCL(_tc); \
TCP_DBG_IP_TAG_RMT(_tc); \
}
#define TCP_EVT_DEALLOC_HANDLER(_tc, ...) \
{ \
vec_free (_tc->c_elog_track.name); \
vec_add1 (tcp_dbg_main.free_track_indices, \
_tc->c_elog_track.track_index_plus_one - 1); \
}
#define TCP_EVT_OPEN_HANDLER(_tc, ...) \
{ \
TCP_EVT_INIT_HANDLER(_tc, 0); \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "open: index %d", \
.format_args = "i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->c_c_index; \
}
#define TCP_EVT_CLOSE_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "close: cidx %d", \
.format_args = "i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->c_c_index; \
}
#define TCP_EVT_BIND_HANDLER(_tc, ...) \
{ \
TCP_EVT_INIT_HANDLER(_tc, 1); \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "bind: listener %d", \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->c_c_index; \
}
#define TCP_EVT_SYN_RCVD_HANDLER(_tc,_init, ...) \
{ \
if (_init) \
TCP_EVT_INIT_HANDLER(_tc, 0); \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "syn-rx: cidx %u sidx %u irs %u", \
.format_args = "i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 3); \
ed->data[0] = _tc->c_c_index; \
ed->data[1] = _tc->c_s_index; \
ed->data[2] = _tc->irs; \
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
}
#define TCP_EVT_UNBIND_HANDLER(_tc, ...) \
{ \
TCP_EVT_DEALLOC_HANDLER(_tc); \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "unbind: listener %d", \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->c_c_index; \
TCP_EVT_DEALLOC_HANDLER(_tc); \
}
#define TCP_EVT_DELETE_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "delete: cidx %d sidx %d", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->c_c_index; \
ed->data[1] = _tc->c_s_index; \
TCP_EVT_DEALLOC_HANDLER(_tc); \
}
#endif
/*
* State machine
*/
#if TCP_DEBUG_SM > 0 || TCP_DEBUG_ALWAYS
#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "state: %s", \
.format_args = "t4", \
.n_enum_strings = 11, \
.enum_strings = { \
"closed", \
"listen", \
"syn-sent", \
"syn-rcvd", \
"established", \
"close_wait", \
"fin-wait-1", \
"last-ack", \
"closing", \
"fin-wait-2", \
"time-wait", \
}, \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->state; \
}
#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "syn-tx: iss %u snd_una %u snd_nxt %u", \
.format_args = "i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 3); \
ed->data[0] = _tc->iss; \
ed->data[1] = _tc->snd_una - _tc->iss; \
ed->data[2] = _tc->snd_nxt - _tc->iss; \
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
}
#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "synack-tx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->iss; \
ed->data[1] = _tc->irs; \
ed->data[2] = _tc->snd_una - _tc->iss; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
}
#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "synack-rx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->iss; \
ed->data[1] = _tc->irs; \
ed->data[2] = _tc->snd_una - _tc->iss; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
}
#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "fin-tx: snd_nxt %d rcv_nxt %d", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->snd_nxt - _tc->iss; \
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
}
#define TCP_EVT_RST_SENT_HANDLER(_tc, ...) \
{ \
if (_tc) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "rst-tx: snd_nxt %d rcv_nxt %d", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->snd_nxt - _tc->iss; \
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
} \
}
#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "fin-rx: snd_nxt %d rcv_nxt %d", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->snd_nxt - _tc->iss; \
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
}
#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "rst-rx: snd_nxt %d rcv_nxt %d", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->snd_nxt - _tc->iss; \
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
}
#define TCP_EVT_SYN_RXT_HANDLER(_tc, _type, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "%s-rxt: iss %u irs %u snd_nxt %u rcv_nxt %u", \
.format_args = "t4i4i4i4i4", \
.n_enum_strings = 2, \
.enum_strings = { \
"syn", \
"synack", \
}, \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _type; \
ed->data[1] = _tc->iss; \
ed->data[2] = _tc->irs; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
}
#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...) \
{ \
tcp_connection_t *_tc; \
if (_timer_id == TCP_TIMER_RETRANSMIT_SYN) \
{ \
_tc = tcp_half_open_connection_get (_tc_index); \
} \
else \
{ \
u32 _thread_index = vlib_get_thread_index (); \
_tc = tcp_connection_get (_tc_index, _thread_index); \
} \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "timer-pop: %s cidx %u sidx %u", \
.format_args = "t4i4i4", \
.n_enum_strings = 8, \
.enum_strings = { \
"retransmit", \
"delack", \
"persist", \
"keep", \
"waitclose", \
"retransmit syn", \
"establish", \
"establish-ao", \
}, \
}; \
if (_tc) \
{ \
TCP_DECLARE_ETD(_tc, _e, 3); \
ed->data[0] = _timer_id; \
ed->data[1] = _tc->c_c_index; \
ed->data[2] = _tc->c_s_index; \
} \
else \
{ \
clib_warning ("pop %d for unexisting connection %d", _timer_id, \
_tc_index); \
} \
}
#else
#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)
#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)
#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_SYN_RXT_HANDLER(_tc, ...)
#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)
#define TCP_EVT_RST_SENT_HANDLER(_tc, ...)
#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)
#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)
#endif
#if TCP_DEBUG_SM > 1 || TCP_DEBUG_ALWAYS
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "seg-inv: seq %u end %u rcv_las %u rcv_nxt %u rcv_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _btcp.seq_number - _tc->irs; \
ed->data[1] = _btcp.seq_end - _tc->irs; \
ed->data[2] = _tc->rcv_las - _tc->irs; \
ed->data[3] = _tc->rcv_nxt - _tc->irs; \
ed->data[4] = _tc->rcv_wnd; \
}
#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "paws-err: seq %u end %u tsval %u tsval_recent %u", \
.format_args = "i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = _seq - _tc->irs; \
ed->data[1] = _end - _tc->irs; \
ed->data[2] = _tc->rcv_opts.tsval; \
ed->data[3] = _tc->tsval_recent; \
}
#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "ack-err: %s ack %u snd_una %u snd_nxt %u", \
.format_args = "t4i4i4i4", \
.n_enum_strings = 3, \
.enum_strings = { \
"invalid", \
"old", \
"future", \
}, \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = _type; \
ed->data[1] = _ack - _tc->iss; \
ed->data[2] = _tc->snd_una - _tc->iss; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
}
#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...) \
{ \
if (_av > 0) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "huh?: rcv_wnd %u obsd %u av %u rcv_nxt %u rcv_las %u", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->rcv_wnd; \
ed->data[1] = _obs; \
ed->data[2] = _av; \
ed->data[3] = _tc->rcv_nxt - _tc->irs; \
ed->data[4] = _tc->rcv_las - _tc->irs; \
} \
}
#else
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...)
#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)
#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)
#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)
#endif
#if TCP_DEBUG_SM > 2 || TCP_DEBUG_ALWAYS
#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "ack-tx: acked %u rcv_nxt %u rcv_wnd %u snd_nxt %u snd_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->rcv_nxt - _tc->rcv_las; \
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
ed->data[2] = _tc->rcv_wnd; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
ed->data[4] = _tc->snd_wnd; \
}
#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "ack-rx: %u snd_una %u snd_wnd %u cwnd %u inflight %u", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->bytes_acked; \
ed->data[1] = _tc->snd_una - _tc->iss; \
ed->data[2] = _tc->snd_wnd; \
ed->data[3] = _tc->cwnd; \
ed->data[4] = tcp_flight_size(_tc); \
}
#define TCP_EVT_PKTIZE_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "tx: una %u snd_nxt %u space %u flight %u rcv_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->snd_una - _tc->iss; \
ed->data[1] = _tc->snd_nxt - _tc->iss; \
ed->data[2] = tcp_available_output_snd_space (_tc); \
ed->data[3] = tcp_flight_size (_tc); \
ed->data[4] = _tc->rcv_wnd; \
}
#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "in: %s len %u written %d rcv_nxt %u rcv_wnd(o) %d", \
.format_args = "t4i4i4i4i4", \
.n_enum_strings = 2, \
.enum_strings = { \
"order", \
"ooo", \
}, \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _type; \
ed->data[1] = _len; \
ed->data[2] = _written; \
ed->data[3] = (_tc->rcv_nxt - _tc->irs) + _written; \
ed->data[4] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las); \
}
#else
#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)
#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_PKTIZE_HANDLER(_tc, ...)
#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)
#endif
/*
* State machine verbose
*/
#if TCP_DEBUG_SM > 3 || TCP_DEBUG_ALWAYS
#define TCP_EVT_SND_WND_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "snd-wnd update: %u ", \
.format_args = "i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 1); \
ed->data[0] = _tc->snd_wnd; \
}
#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "out: flags %x, bytes %u", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = flags; \
ed->data[1] = n_bytes; \
}
#else
#define TCP_EVT_SND_WND_HANDLER(_tc, ...)
#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)
#endif
/*
* Congestion Control
*/
#if TCP_DEBUG_CC || TCP_DEBUG_ALWAYS
#define TCP_EVT_CC_EVT_PRINT(_tc, _sub_evt) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "cc: %s snd_space %u snd_una %u out %u flight %u", \
.format_args = "t4i4i4i4i4", \
.n_enum_strings = 7, \
.enum_strings = { \
"fast-rxt", \
"first-rxt", \
"rxt-timeout", \
"recovered", \
"congestion", \
"undo", \
"recovery", \
}, \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _sub_evt; \
ed->data[1] = tcp_available_cc_snd_space (_tc); \
ed->data[2] = _tc->snd_una - _tc->iss; \
ed->data[3] = tcp_bytes_out(_tc); \
ed->data[4] = tcp_flight_size (_tc); \
}
#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...) \
{ \
if (_tc->snd_una != _tc->iss) \
TCP_EVT_CC_STAT_PRINT (_tc); \
if ((_sub_evt <= 1 && TCP_DEBUG_CC > 1) \
|| (_sub_evt > 1 && TCP_DEBUG_CC > 0)) \
TCP_EVT_CC_EVT_PRINT (_tc, _sub_evt); \
}
#else
#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...) \
#endif
#if TCP_DEBUG_CC > 1 || TCP_DEBUG_ALWAYS
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "rxt: snd_nxt %u offset %u snd %u rxt %u", \
.format_args = "i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = _tc->snd_nxt - _tc->iss; \
ed->data[1] = offset; \
ed->data[2] = n_bytes; \
ed->data[3] = _tc->snd_rxt_bytes; \
}
#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "dack-tx: rcv_nxt %u seq %u rcv_wnd %u snd_nxt %u av_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->rcv_nxt - _tc->irs; \
ed->data[1] = _btcp.seq_number - _tc->irs; \
ed->data[2] = _tc->rcv_wnd; \
ed->data[3] = _tc->snd_nxt - _tc->iss; \
ed->data[4] = tcp_available_snd_wnd(_tc); \
}
#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "dack-rx: snd_una %u cwnd %u snd_wnd %u flight %u rcv_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->snd_una - _tc->iss; \
ed->data[1] = _tc->cwnd; \
ed->data[2] = _tc->snd_wnd; \
ed->data[3] = tcp_flight_size(_tc); \
ed->data[4] = _tc->rcv_wnd; \
}
#define TCP_EVT_CC_PACK_HANDLER(_tc, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "pack: snd_una %u snd_nxt %u", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = _tc->snd_una - _tc->iss; \
ed->data[1] = _tc->snd_nxt - _tc->iss; \
}
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...) \
{ \
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "sb1: holes %u lost %u sacked %u high %u highrxt %u", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = pool_elts(_tc->sack_sb.holes); \
ed->data[1] = _tc->sack_sb.lost_bytes; \
ed->data[2] = _tc->sack_sb.sacked_bytes; \
ed->data[3] = _tc->sack_sb.high_sacked - _tc->iss; \
ed->data[4] = _tc->sack_sb.high_rxt - _tc->iss; \
} \
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes) \
{ \
sack_scoreboard_hole_t *hole; \
hole = scoreboard_first_hole (&_tc->sack_sb); \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "sb2: first start: %u end %u last start %u end %u", \
.format_args = "i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = hole ? hole->start - _tc->iss : 0; \
ed->data[1] = hole ? hole->end - _tc->iss : 0; \
hole = scoreboard_last_hole (&_tc->sack_sb); \
ed->data[2] = hole ? hole->start - _tc->iss : 0; \
ed->data[3] = hole ? hole->end - _tc->iss : 0; \
} \
}
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...) \
{ \
if (TCP_DEBUG_CC > 1) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "sacks: blocks %u bytes %u", \
.format_args = "i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 2); \
ed->data[0] = vec_len (_tc->snd_sacks); \
ed->data[1] = tcp_sack_list_bytes (_tc); \
} \
}
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "cc input: len %u written %d rcv_nxt %u rcv_wnd(o) %d", \
.format_args = "i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = _len; \
ed->data[1] = _written; \
ed->data[2] = _tc->rcv_nxt - _tc->irs; \
ed->data[3] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las); \
}
#else
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)
#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...)
#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_CC_PACK_HANDLER(_tc, ...)
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...)
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...)
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...)
#endif
/*
* Congestion control stats
*/
#if TCP_DEBUG_CS || TCP_DEBUG_ALWAYS
#define STATS_INTERVAL 0.001
#define tcp_cc_time_to_print_stats(_tc) \
_tc->c_cc_stat_tstamp + STATS_INTERVAL < \
tcp_time_now_us (_tc->c_thread_index) || \
tcp_in_fastrecovery (_tc)
#define TCP_EVT_CC_RTO_STAT_PRINT(_tc) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "rcv_stat: rto %u srtt %u mrtt-us %u rttvar %u", \
.format_args = "i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 4); \
ed->data[0] = _tc->rto; \
ed->data[1] = _tc->srtt; \
ed->data[2] = (u32) (_tc->mrtt_us * 1e6); \
ed->data[3] = _tc->rttvar; \
}
#define TCP_EVT_CC_RTO_STAT_HANDLER(_tc, ...) \
{ \
if (tcp_cc_time_to_print_stats (_tc)) \
{ \
TCP_EVT_CC_RTO_STAT_PRINT (_tc); \
_tc->c_cc_stat_tstamp = tcp_time_now_us (_tc->c_thread_index); \
} \
}
#define TCP_EVT_CC_SND_STAT_PRINT(_tc) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "snd_stat: cc_space %u sacked %u lost %u out %u rxt %u", \
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = tcp_available_cc_snd_space (_tc); \
ed->data[1] = _tc->sack_sb.sacked_bytes; \
ed->data[2] = _tc->sack_sb.lost_bytes; \
ed->data[3] = tcp_bytes_out (_tc); \
ed->data[3] = _tc->snd_rxt_bytes; \
}
#define TCP_EVT_CC_SND_STAT_HANDLER(_tc, ...) \
{ \
if (tcp_cc_time_to_print_stats (_tc)) \
{ \
TCP_EVT_CC_SND_STAT_PRINT (_tc); \
_tc->c_cc_stat_tstamp = tcp_time_now_us (_tc->c_thread_index); \
} \
}
#define TCP_EVT_CC_STAT_PRINT(_tc) \
{ \
ELOG_TYPE_DECLARE (_e) = \
{ \
.format = "cc_stat: cwnd %u flight %u space %u ssthresh %u snd_wnd %u",\
.format_args = "i4i4i4i4i4", \
}; \
TCP_DECLARE_ETD(_tc, _e, 5); \
ed->data[0] = _tc->cwnd; \
ed->data[1] = tcp_flight_size (_tc); \
ed->data[2] = tcp_snd_space (_tc); \
ed->data[3] = _tc->ssthresh; \
ed->data[4] = _tc->snd_wnd; \
TCP_EVT_CC_RTO_STAT_PRINT (_tc); \
TCP_EVT_CC_SND_STAT_PRINT (_tc); \
}
#define TCP_EVT_CC_STAT_HANDLER(_tc, ...) \
{ \
if (tcp_cc_time_to_print_stats (_tc)) \
{ \
TCP_EVT_CC_STAT_PRINT (_tc); \
_tc->c_cc_stat_tstamp = tcp_time_now_us (_tc->c_thread_index); \
} \
}
#else
#define TCP_EVT_CC_STAT_HANDLER(_tc, ...)
#define TCP_EVT_CC_STAT_PRINT(_tc)
#endif
/*
* Buffer allocation
*/
#if TCP_DEBUG_BUF_ALLOC
#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index) \
{ \
static u32 *buffer_fail_counters; \
if (PREDICT_FALSE (buffer_fail_counters == 0)) \
{ \
u32 num_threads; \
vlib_thread_main_t *vtm = vlib_get_thread_main (); \
num_threads = 1 /* main thread */ + vtm->n_threads; \
vec_validate (buffer_fail_counters, num_threads - 1); \
} \
if (PREDICT_FALSE (tcp_cfg.buffer_fail_fraction != 0.0)) \
{ \
if (PREDICT_TRUE (buffer_fail_counters[thread_index] > 0)) \
{ \
if ((1.0 / (f32) (buffer_fail_counters[thread_index])) \
< tcp_cfg.buffer_fail_fraction) \
{ \
buffer_fail_counters[thread_index] = 0.0000001; \
return -1; \
} \
} \
buffer_fail_counters[thread_index] ++; \
} \
}
#else
#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index)
#endif
#endif /* SRC_VNET_TCP_TCP_DEBUG_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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