src/vnet/tcp/tcp_debug.h

   1 /*
   2  * Copyright (c) 2017 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef SRC_VNET_TCP_TCP_DEBUG_H_
  17 #define SRC_VNET_TCP_TCP_DEBUG_H_
  18
  19 #include <vlib/vlib.h>
  20
  21 #define TCP_DEBUG (1)
  22 #define TCP_DEBUG_SM (0)
  23 #define TCP_DEBUG_CC (0)
  24 #define TCP_DEBUG_CC_STAT (1)
  25
  26 #define foreach_tcp_dbg_evt             \
  27   _(INIT, "")                           \
  28   _(DEALLOC, "")                        \
  29   _(OPEN, "open")                       \
  30   _(CLOSE, "close")                     \
  31   _(BIND, "bind")                       \
  32   _(UNBIND, "unbind")                   \
  33   _(DELETE, "delete")                   \
  34   _(SYN_SENT, "SYN sent")               \
  35   _(SYNACK_SENT, "SYNACK sent")         \
  36   _(SYNACK_RCVD, "SYNACK rcvd")         \
  37   _(SYN_RXT, "SYN retransmit")          \
  38   _(FIN_SENT, "FIN sent")               \
  39   _(ACK_SENT, "ACK sent")               \
  40   _(DUPACK_SENT, "DUPACK sent")         \
  41   _(RST_SENT, "RST sent")               \
  42   _(SYN_RCVD, "SYN rcvd")               \
  43   _(ACK_RCVD, "ACK rcvd")               \
  44   _(DUPACK_RCVD, "DUPACK rcvd")         \
  45   _(FIN_RCVD, "FIN rcvd")               \
  46   _(RST_RCVD, "RST rcvd")               \
  47   _(STATE_CHANGE, "state change")       \
  48   _(PKTIZE, "packetize")                \
  49   _(INPUT, "in")                        \
  50   _(SND_WND, "snd_wnd update")          \
  51   _(OUTPUT, "output")                   \
  52   _(TIMER_POP, "timer pop")             \
  53   _(CC_RTX, "retransmit")               \
  54   _(CC_EVT, "cc event")                 \
  55   _(CC_PACK, "cc partial ack")          \
  56   _(CC_STAT, "cc stats")                \
  57   _(CC_RTO_STAT, "cc rto stats")        \
  58   _(SEG_INVALID, "invalid segment")     \
  59   _(PAWS_FAIL, "failed paws check")     \
  60   _(ACK_RCV_ERR, "invalid ack")         \
  61   _(RCV_WND_SHRUNK, "shrunk rcv_wnd")   \
  62
  63 typedef enum _tcp_dbg
  64 {
  65 #define _(sym, str) TCP_DBG_##sym,
  66   foreach_tcp_dbg_evt
  67 #undef _
  68 } tcp_dbg_e;
  69
  70 typedef enum _tcp_dbg_evt
  71 {
  72 #define _(sym, str) TCP_EVT_##sym,
  73   foreach_tcp_dbg_evt
  74 #undef _
  75 } tcp_dbg_evt_e;
  76
  77 #if TCP_DEBUG
  78
  79 #define TRANSPORT_DEBUG (1)
  80
  81 /*
  82  * Infra and evt track setup
  83  */
  84
  85 #define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
  86
  87 #define DECLARE_ETD(_tc, _e, _size)                                     \
  88   struct                                                                \
  89   {                                                                     \
  90     u32 data[_size];                                                    \
  91   } * ed;                                                               \
  92   ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main,                    \
  93                         _e, _tc->c_elog_track)
  94
  95 #define TCP_DBG_IP_TAG_LCL(_tc)                                         \
  96 {                                                                       \
  97   if (_tc->c_is_ip4)                                                    \
  98     {                                                                   \
  99       ELOG_TYPE_DECLARE (_e) =                                          \
 100       {                                                                 \
 101         .format = "lcl: %d.%d.%d.%d:%d",                                \
 102         .format_args = "i4i4i4i4i4",                                    \
 103       };                                                                \
 104       DECLARE_ETD(_tc, _e, 5);                                          \
 105       ed->data[0] = _tc->c_lcl_ip.ip4.as_u8[0];                         \
 106       ed->data[1] = _tc->c_lcl_ip.ip4.as_u8[1];                         \
 107       ed->data[2] = _tc->c_lcl_ip.ip4.as_u8[2];                         \
 108       ed->data[3] = _tc->c_lcl_ip.ip4.as_u8[3];                         \
 109       ed->data[4] = clib_net_to_host_u16(_tc->c_lcl_port);              \
 110     }                                                                   \
 111 }
 112
 113 #define TCP_DBG_IP_TAG_RMT(_tc)                                         \
 114 {                                                                       \
 115   if (_tc->c_is_ip4)                                                    \
 116     {                                                                   \
 117       ELOG_TYPE_DECLARE (_e) =                                          \
 118       {                                                                 \
 119         .format = "rmt: %d.%d.%d.%d:%d",                                \
 120         .format_args = "i4i4i4i4i4",                                    \
 121       };                                                                \
 122       DECLARE_ETD(_tc, _e, 5);                                          \
 123       ed->data[0] = _tc->c_rmt_ip.ip4.as_u8[0];                         \
 124       ed->data[1] = _tc->c_rmt_ip.ip4.as_u8[1];                         \
 125       ed->data[2] = _tc->c_rmt_ip.ip4.as_u8[2];                         \
 126       ed->data[3] = _tc->c_rmt_ip.ip4.as_u8[3];                         \
 127       ed->data[4] = clib_net_to_host_u16(_tc->c_rmt_port);              \
 128     }                                                                   \
 129 }
 130
 131 #define TCP_EVT_INIT_HANDLER(_tc, _is_l, ...)                           \
 132 {                                                                       \
 133   char *_fmt = _is_l ? "l[%d].%d:%d%c" : "[%d].%d:%d->.%d:%d%c";        \
 134   if (_tc->c_is_ip4)                                                    \
 135     {                                                                   \
 136       _tc->c_elog_track.name =                                          \
 137         (char *) format (0, _fmt, _tc->c_thread_index,                  \
 138                          _tc->c_lcl_ip.ip4.as_u8[3],                    \
 139                          clib_net_to_host_u16(_tc->c_lcl_port),         \
 140                          _tc->c_rmt_ip.ip4.as_u8[3],                    \
 141                          clib_net_to_host_u16(_tc->c_rmt_port), 0);     \
 142     }                                                                   \
 143   else                                                                  \
 144       _tc->c_elog_track.name =                                          \
 145         (char *) format (0, _fmt, _tc->c_thread_index,                  \
 146                          _tc->c_lcl_ip.ip6.as_u8[15],                   \
 147                          clib_net_to_host_u16(_tc->c_lcl_port),         \
 148                          _tc->c_rmt_ip.ip6.as_u8[15],                   \
 149                          clib_net_to_host_u16(_tc->c_rmt_port), 0);     \
 150   elog_track_register (&vlib_global_main.elog_main, &_tc->c_elog_track);\
 151   TCP_DBG_IP_TAG_LCL(_tc);                                              \
 152   TCP_DBG_IP_TAG_RMT(_tc);                                              \
 153 }
 154
 155 #define TCP_EVT_DEALLOC_HANDLER(_tc, ...)                               \
 156 {                                                                       \
 157   vec_free (_tc->c_elog_track.name);                                    \
 158 }
 159
 160 #define TCP_EVT_OPEN_HANDLER(_tc, ...)                                  \
 161 {                                                                       \
 162   TCP_EVT_INIT_HANDLER(_tc, 0);                                         \
 163   ELOG_TYPE_DECLARE (_e) =                                              \
 164   {                                                                     \
 165     .format = "open: index %d",                                         \
 166     .format_args = "i4",                                                \
 167   };                                                                    \
 168   DECLARE_ETD(_tc, _e, 1);                                              \
 169   ed->data[0] = _tc->c_c_index;                                         \
 170 }
 171
 172 #define TCP_EVT_CLOSE_HANDLER(_tc, ...)                                 \
 173 {                                                                       \
 174   ELOG_TYPE_DECLARE (_e) =                                              \
 175   {                                                                     \
 176     .format = "close: %d",                                              \
 177     .format_args = "i4",                                                \
 178   };                                                                    \
 179   DECLARE_ETD(_tc, _e, 1);                                              \
 180   ed->data[0] = _tc->c_c_index;                                         \
 181 }
 182
 183 #define TCP_EVT_BIND_HANDLER(_tc, ...)                                  \
 184 {                                                                       \
 185   TCP_EVT_INIT_HANDLER(_tc, 1);                                         \
 186   ELOG_TYPE_DECLARE (_e) =                                              \
 187   {                                                                     \
 188     .format = "bind: listener %d",                                      \
 189   };                                                                    \
 190   DECLARE_ETD(_tc, _e, 1);                                              \
 191   ed->data[0] = _tc->c_c_index;                                         \
 192 }
 193
 194 #define TCP_EVT_SYN_RCVD_HANDLER(_tc,_init, ...)                                \
 195 {                                                                       \
 196   if (_init)                                                            \
 197     TCP_EVT_INIT_HANDLER(_tc, 0);                                       \
 198   ELOG_TYPE_DECLARE (_e) =                                              \
 199   {                                                                     \
 200     .format = "syn-rx: irs %u",                                         \
 201     .format_args = "i4",                                                \
 202   };                                                                    \
 203   DECLARE_ETD(_tc, _e, 1);                                              \
 204   ed->data[0] = _tc->irs;                                               \
 205   TCP_EVT_STATE_CHANGE_HANDLER(_tc);                                    \
 206 }
 207
 208 #define TCP_EVT_UNBIND_HANDLER(_tc, ...)                                \
 209 {                                                                       \
 210   TCP_EVT_DEALLOC_HANDLER(_tc);                                         \
 211   ELOG_TYPE_DECLARE (_e) =                                              \
 212   {                                                                     \
 213     .format = "unbind: listener %d",                                    \
 214   };                                                                    \
 215   DECLARE_ETD(_tc, _e, 1);                                              \
 216   ed->data[0] = _tc->c_c_index;                                         \
 217   TCP_EVT_DEALLOC_HANDLER(_tc);                                         \
 218 }
 219
 220 #define TCP_EVT_DELETE_HANDLER(_tc, ...)                                \
 221 {                                                                       \
 222   ELOG_TYPE_DECLARE (_e) =                                              \
 223   {                                                                     \
 224     .format = "delete: %d",                                             \
 225     .format_args = "i4",                                                \
 226   };                                                                    \
 227   DECLARE_ETD(_tc, _e, 1);                                              \
 228   ed->data[0] = _tc->c_c_index;                                         \
 229   TCP_EVT_DEALLOC_HANDLER(_tc);                                         \
 230 }
 231
 232 #define CONCAT_HELPER(_a, _b) _a##_b
 233 #define CC(_a, _b) CONCAT_HELPER(_a, _b)
 234 #define TCP_EVT_DBG(_evt, _args...) CC(_evt, _HANDLER)(_args)
 235 #else
 236 #define TCP_EVT_DBG(_evt, _args...)
 237 #define TCP_DBG(_fmt, _args...)
 238 #endif
 239
 240 /*
 241  * State machine
 242  */
 243 #if TCP_DEBUG_SM
 244
 245 #define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)                          \
 246 {                                                                       \
 247   ELOG_TYPE_DECLARE (_e) =                                              \
 248   {                                                                     \
 249     .format = "state: %s",                                              \
 250     .format_args = "t4",                                                \
 251     .n_enum_strings = 11,                                               \
 252     .enum_strings = {                                                   \
 253       "closed",                                                         \
 254       "listen",                                                         \
 255       "syn-sent",                                                       \
 256       "syn-rcvd",                                                       \
 257       "established",                                                    \
 258       "close_wait",                                                     \
 259       "fin-wait-1",                                                     \
 260       "last-ack",                                                       \
 261       "closing",                                                        \
 262       "fin-wait-2",                                                     \
 263       "time-wait",                                                      \
 264     },                                                                  \
 265   };                                                                    \
 266   DECLARE_ETD(_tc, _e, 1);                                              \
 267   ed->data[0] = _tc->state;                                             \
 268 }
 269
 270 #define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)                              \
 271 {                                                                       \
 272   ELOG_TYPE_DECLARE (_e) =                                              \
 273   {                                                                     \
 274     .format = "syn-tx: iss %u snd_una %u snd_una_max %u snd_nxt %u",    \
 275     .format_args = "i4i4i4i4",                                          \
 276   };                                                                    \
 277   DECLARE_ETD(_tc, _e, 4);                                              \
 278   ed->data[0] = _tc->iss;                                               \
 279   ed->data[1] = _tc->snd_una - _tc->iss;                                        \
 280   ed->data[2] = _tc->snd_una_max - _tc->iss;                            \
 281   ed->data[3] = _tc->snd_nxt - _tc->iss;                                        \
 282   TCP_EVT_STATE_CHANGE_HANDLER(_tc);                                    \
 283 }
 284
 285 #define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)                           \
 286 {                                                                       \
 287   ELOG_TYPE_DECLARE (_e) =                                              \
 288   {                                                                     \
 289     .format = "synack-tx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
 290     .format_args = "i4i4i4i4i4",                                                \
 291   };                                                                    \
 292   DECLARE_ETD(_tc, _e, 5);                                              \
 293   ed->data[0] = _tc->iss;                                               \
 294   ed->data[1] = _tc->irs;                                               \
 295   ed->data[2] = _tc->snd_una - _tc->iss;                                        \
 296   ed->data[3] = _tc->snd_nxt - _tc->iss;                                        \
 297   ed->data[4] = _tc->rcv_nxt - _tc->irs;                                        \
 298 }
 299
 300 #define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)                           \
 301 {                                                                       \
 302   ELOG_TYPE_DECLARE (_e) =                                              \
 303   {                                                                     \
 304     .format = "synack-rx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
 305     .format_args = "i4i4i4i4i4",                                                \
 306   };                                                                    \
 307   DECLARE_ETD(_tc, _e, 5);                                              \
 308   ed->data[0] = _tc->iss;                                               \
 309   ed->data[1] = _tc->irs;                                               \
 310   ed->data[2] = _tc->snd_una - _tc->iss;                                        \
 311   ed->data[3] = _tc->snd_nxt - _tc->iss;                                        \
 312   ed->data[4] = _tc->rcv_nxt - _tc->irs;                                        \
 313   TCP_EVT_STATE_CHANGE_HANDLER(_tc);                                    \
 314 }
 315
 316 #define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)                              \
 317 {                                                                       \
 318   ELOG_TYPE_DECLARE (_e) =                                              \
 319   {                                                                     \
 320     .format = "fin-tx: snd_nxt %d rcv_nxt %d",                          \
 321     .format_args = "i4i4",                                              \
 322   };                                                                    \
 323   DECLARE_ETD(_tc, _e, 2);                                              \
 324   ed->data[0] = _tc->snd_nxt - _tc->iss;                                \
 325   ed->data[1] = _tc->rcv_nxt - _tc->irs;                                \
 326 }
 327
 328 #define TCP_EVT_RST_SENT_HANDLER(_tc, ...)                              \
 329 {                                                                       \
 330   ELOG_TYPE_DECLARE (_e) =                                              \
 331   {                                                                     \
 332     .format = "rst-tx: snd_nxt %d rcv_nxt %d",                          \
 333     .format_args = "i4i4",                                              \
 334   };                                                                    \
 335   DECLARE_ETD(_tc, _e, 2);                                              \
 336   ed->data[0] = _tc->snd_nxt - _tc->iss;                                \
 337   ed->data[1] = _tc->rcv_nxt - _tc->irs;                                \
 338   TCP_EVT_STATE_CHANGE_HANDLER(_tc);                                    \
 339 }
 340
 341 #define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)                              \
 342 {                                                                       \
 343   ELOG_TYPE_DECLARE (_e) =                                              \
 344   {                                                                     \
 345     .format = "fin-rx: snd_nxt %d rcv_nxt %d",                          \
 346     .format_args = "i4i4",                                              \
 347   };                                                                    \
 348   DECLARE_ETD(_tc, _e, 2);                                              \
 349   ed->data[0] = _tc->snd_nxt - _tc->iss;                                \
 350   ed->data[1] = _tc->rcv_nxt - _tc->irs;                                \
 351 }
 352
 353 #define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)                              \
 354 {                                                                       \
 355   ELOG_TYPE_DECLARE (_e) =                                              \
 356   {                                                                     \
 357     .format = "rst-rx: snd_nxt %d rcv_nxt %d",                          \
 358     .format_args = "i4i4",                                              \
 359   };                                                                    \
 360   DECLARE_ETD(_tc, _e, 2);                                              \
 361   ed->data[0] = _tc->snd_nxt - _tc->iss;                                \
 362   ed->data[1] = _tc->rcv_nxt - _tc->irs;                                \
 363 }
 364
 365 #define TCP_EVT_SYN_RXT_HANDLER(_tc, _type, ...)                        \
 366 {                                                                       \
 367   ELOG_TYPE_DECLARE (_e) =                                              \
 368   {                                                                     \
 369     .format = "%s-rxt: iss %u irs %u snd_nxt %u rcv_nxt %u",            \
 370     .format_args = "t4i4i4i4i4",                                                \
 371     .n_enum_strings = 2,                                                \
 372     .enum_strings = {                                                   \
 373         "syn",                                                          \
 374         "syn-ack",                                                      \
 375     },                                                                  \
 376   };                                                                    \
 377   DECLARE_ETD(_tc, _e, 5);                                              \
 378   ed->data[0] = _type;                                                  \
 379   ed->data[1] = _tc->iss;                                               \
 380   ed->data[2] = _tc->irs;                                               \
 381   ed->data[3] = _tc->snd_nxt - _tc->iss;                                        \
 382   ed->data[4] = _tc->rcv_nxt - _tc->irs;                                        \
 383 }
 384
 385 #else
 386 #define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)
 387 #define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)
 388 #define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)
 389 #define TCP_EVT_SYN_RXT_HANDLER(_tc, ...)
 390 #define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)
 391 #define TCP_EVT_RST_SENT_HANDLER(_tc, ...)
 392 #define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)
 393 #define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)
 394 #define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)
 395 #endif
 396
 397 #if TCP_DEBUG_SM > 1
 398
 399 #define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)                              \
 400 {                                                                       \
 401   ELOG_TYPE_DECLARE (_e) =                                              \
 402   {                                                                     \
 403     .format = "ack-tx: acked %u rcv_nxt %u rcv_wnd %u snd_nxt %u snd_wnd %u",\
 404     .format_args = "i4i4i4i4i4",                                        \
 405   };                                                                    \
 406   DECLARE_ETD(_tc, _e, 5);                                              \
 407   ed->data[0] = _tc->rcv_nxt - _tc->rcv_las;                            \
 408   ed->data[1] = _tc->rcv_nxt - _tc->irs;                                \
 409   ed->data[2] = _tc->rcv_wnd;                                           \
 410   ed->data[3] = _tc->snd_nxt - _tc->iss;                                \
 411   ed->data[4] = _tc->snd_wnd;                                           \
 412 }
 413
 414 #define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)                              \
 415 {                                                                       \
 416   ELOG_TYPE_DECLARE (_e) =                                              \
 417   {                                                                     \
 418     .format = "ack-rx: %u snd_una %u snd_wnd %u cwnd %u inflight %u",   \
 419     .format_args = "i4i4i4i4i4",                                        \
 420   };                                                                    \
 421   DECLARE_ETD(_tc, _e, 5);                                              \
 422   ed->data[0] = _tc->bytes_acked;                                       \
 423   ed->data[1] = _tc->snd_una - _tc->iss;                                \
 424   ed->data[2] = _tc->snd_wnd;                                           \
 425   ed->data[3] = _tc->cwnd;                                              \
 426   ed->data[4] = tcp_flight_size(_tc);                                   \
 427 }
 428
 429 #define TCP_EVT_PKTIZE_HANDLER(_tc, ...)                                \
 430 {                                                                       \
 431   ELOG_TYPE_DECLARE (_e) =                                              \
 432   {                                                                     \
 433     .format = "tx: una %u snd_nxt %u space %u flight %u rcv_wnd %u",\
 434     .format_args = "i4i4i4i4i4",                                        \
 435   };                                                                    \
 436   DECLARE_ETD(_tc, _e, 5);                                              \
 437   ed->data[0] = _tc->snd_una - _tc->iss;                                \
 438   ed->data[1] = _tc->snd_nxt - _tc->iss;                                \
 439   ed->data[2] = tcp_available_output_snd_space (_tc);                   \
 440   ed->data[3] = tcp_flight_size (_tc);                                  \
 441   ed->data[4] = _tc->rcv_wnd;                                           \
 442 }
 443
 444 #define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)          \
 445 {                                                                       \
 446   ELOG_TYPE_DECLARE (_e) =                                              \
 447   {                                                                     \
 448     .format = "in: %s len %u written %d rcv_nxt %u rcv_wnd(o) %d",      \
 449     .format_args = "t4i4i4i4i4",                                        \
 450     .n_enum_strings = 2,                                                \
 451     .enum_strings = {                                                   \
 452       "order",                                                          \
 453       "ooo",                                                            \
 454     },                                                                  \
 455   };                                                                    \
 456   DECLARE_ETD(_tc, _e, 5);                                              \
 457   ed->data[0] = _type;                                                  \
 458   ed->data[1] = _len;                                                   \
 459   ed->data[2] = _written;                                               \
 460   ed->data[3] = (_tc->rcv_nxt - _tc->irs) + _written;                   \
 461   ed->data[4] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las);           \
 462 }
 463
 464 #define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)            \
 465 {                                                                       \
 466   tcp_connection_t *_tc;                                                \
 467   if (_timer_id == TCP_TIMER_RETRANSMIT_SYN                             \
 468     || _timer_id == TCP_TIMER_ESTABLISH)                                \
 469     {                                                                   \
 470       _tc = tcp_half_open_connection_get (_tc_index);                   \
 471     }                                                                   \
 472   else                                                                  \
 473     {                                                                   \
 474       u32 _thread_index = vlib_get_thread_index ();                     \
 475       _tc = tcp_connection_get (_tc_index, _thread_index);              \
 476     }                                                                   \
 477   ELOG_TYPE_DECLARE (_e) =                                              \
 478   {                                                                     \
 479     .format = "timer-pop: %s (%d)",                                     \
 480     .format_args = "t4i4",                                              \
 481     .n_enum_strings = 7,                                                \
 482     .enum_strings = {                                                   \
 483       "retransmit",                                                     \
 484       "delack",                                                         \
 485       "persist",                                                        \
 486       "keep",                                                           \
 487       "waitclose",                                                      \
 488       "retransmit syn",                                                 \
 489       "establish",                                                      \
 490     },                                                                  \
 491   };                                                                    \
 492   if (_tc)                                                              \
 493     {                                                                   \
 494       DECLARE_ETD(_tc, _e, 2);                                          \
 495       ed->data[0] = _timer_id;                                          \
 496       ed->data[1] = _timer_id;                                          \
 497     }                                                                   \
 498   else                                                                  \
 499     {                                                                   \
 500       clib_warning ("pop %d for unexisting connection %d", _timer_id,   \
 501                     _tc_index);                                         \
 502     }                                                                   \
 503 }
 504
 505 #define TCP_EVT_SEG_INVALID_HANDLER(_tc, _seq, _end, ...)               \
 506 {                                                                       \
 507   ELOG_TYPE_DECLARE (_e) =                                              \
 508   {                                                                     \
 509     .format = "seg-inv: seq %u end %u rcv_las %u rcv_nxt %u rcv_wnd %u",\
 510     .format_args = "i4i4i4i4i4",                                        \
 511   };                                                                    \
 512   DECLARE_ETD(_tc, _e, 5);                                              \
 513   ed->data[0] = _seq - _tc->irs;                                        \
 514   ed->data[1] = _end - _tc->irs;                                        \
 515   ed->data[2] = _tc->rcv_las - _tc->irs;                                \
 516   ed->data[3] = _tc->rcv_nxt - _tc->irs;                                \
 517   ed->data[4] = _tc->rcv_wnd;                                           \
 518 }
 519
 520 #define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)                 \
 521 {                                                                       \
 522   ELOG_TYPE_DECLARE (_e) =                                              \
 523   {                                                                     \
 524     .format = "paws-err: seq %u end %u tsval %u tsval_recent %u",       \
 525     .format_args = "i4i4i4i4",                                          \
 526   };                                                                    \
 527   DECLARE_ETD(_tc, _e, 4);                                              \
 528   ed->data[0] = _seq - _tc->irs;                                        \
 529   ed->data[1] = _end - _tc->irs;                                        \
 530   ed->data[2] = _tc->rcv_opts.tsval;                                    \
 531   ed->data[3] = _tc->tsval_recent;                                      \
 532 }
 533
 534 #define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)              \
 535 {                                                                       \
 536   ELOG_TYPE_DECLARE (_e) =                                              \
 537   {                                                                     \
 538     .format = "ack-err: %s ack %u snd_una %u snd_nxt %u una_max %u",    \
 539     .format_args = "t4i4i4i4i4",                                        \
 540     .n_enum_strings = 3,                                                \
 541     .enum_strings = {                                                   \
 542       "invalid",                                                        \
 543       "old",                                                            \
 544       "future",                                                         \
 545     },                                                                  \
 546   };                                                                    \
 547   DECLARE_ETD(_tc, _e, 5);                                              \
 548   ed->data[0] = _type;                                                  \
 549   ed->data[1] = _ack - _tc->iss;                                        \
 550   ed->data[2] = _tc->snd_una - _tc->iss;                                \
 551   ed->data[3] = _tc->snd_nxt - _tc->iss;                                \
 552   ed->data[4] = _tc->snd_una_max - _tc->iss;                            \
 553 }
 554
 555 #define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)             \
 556 {                                                                       \
 557 if (_av > 0)                                                            \
 558 {                                                                       \
 559   ELOG_TYPE_DECLARE (_e) =                                              \
 560   {                                                                     \
 561     .format = "huh?: rcv_wnd %u obsd %u av %u rcv_nxt %u rcv_las %u",   \
 562     .format_args = "i4i4i4i4i4",                                        \
 563   };                                                                    \
 564   DECLARE_ETD(_tc, _e, 5);                                              \
 565   ed->data[0] = _tc->rcv_wnd;                                           \
 566   ed->data[1] = _obs;                                                   \
 567   ed->data[2] = _av;                                                    \
 568   ed->data[3] = _tc->rcv_nxt - _tc->irs;                                \
 569   ed->data[4] = _tc->rcv_las - _tc->irs;                                \
 570 }                                                                       \
 571 }
 572 #else
 573 #define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)
 574 #define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)
 575 #define TCP_EVT_PKTIZE_HANDLER(_tc, ...)
 576 #define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)
 577 #define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)
 578 #define TCP_EVT_SEG_INVALID_HANDLER(_tc, _seq, _end, ...)
 579 #define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)
 580 #define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)
 581 #define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)
 582 #endif
 583
 584 /*
 585  * State machine verbose
 586  */
 587 #if TCP_DEBUG_SM > 2
 588 #define TCP_EVT_SND_WND_HANDLER(_tc, ...)                               \
 589 {                                                                       \
 590   ELOG_TYPE_DECLARE (_e) =                                              \
 591   {                                                                     \
 592     .format = "snd-wnd update: %u ",                                    \
 593     .format_args = "i4",                                                \
 594   };                                                                    \
 595   DECLARE_ETD(_tc, _e, 1);                                              \
 596   ed->data[0] = _tc->snd_wnd;                                           \
 597 }
 598
 599 #define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)                 \
 600 {                                                                       \
 601   ELOG_TYPE_DECLARE (_e) =                                              \
 602   {                                                                     \
 603     .format = "out: flags %x, bytes %u",                                \
 604     .format_args = "i4i4",                                              \
 605   };                                                                    \
 606   DECLARE_ETD(_tc, _e, 2);                                              \
 607   ed->data[0] = flags;                                                  \
 608   ed->data[1] = n_bytes;                                                \
 609 }
 610 #else
 611 #define TCP_EVT_SND_WND_HANDLER(_tc, ...)
 612 #define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)
 613 #endif
 614
 615 /*
 616  * Congestion Control
 617  */
 618
 619 #if TCP_DEBUG_CC
 620
 621 #define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...)                      \
 622 {                                                                       \
 623   ELOG_TYPE_DECLARE (_e) =                                              \
 624   {                                                                     \
 625     .format = "cc: %s wnd %u snd_cong %u rxt_bytes %u",                 \
 626     .format_args = "t4i4i4i4",                                          \
 627     .n_enum_strings = 6,                                                \
 628     .enum_strings = {                                                   \
 629       "fast-rxt",                                                       \
 630       "rxt-timeout",                                                    \
 631       "first-rxt",                                                      \
 632       "recovered",                                                      \
 633       "congestion",                                                     \
 634       "undo",                                                           \
 635     },                                                                  \
 636   };                                                                    \
 637   DECLARE_ETD(_tc, _e, 4);                                              \
 638   ed->data[0] = _sub_evt;                                               \
 639   ed->data[1] = tcp_available_snd_space (_tc);                          \
 640   ed->data[2] = _tc->snd_congestion - _tc->iss;                         \
 641   ed->data[3] = _tc->snd_rxt_bytes;                                     \
 642 }
 643
 644 #define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)               \
 645 {                                                                       \
 646   ELOG_TYPE_DECLARE (_e) =                                              \
 647   {                                                                     \
 648     .format = "rxt: snd_nxt %u offset %u snd %u rxt %u",                \
 649     .format_args = "i4i4i4i4",                                          \
 650   };                                                                    \
 651   DECLARE_ETD(_tc, _e, 4);                                              \
 652   ed->data[0] = _tc->snd_nxt - _tc->iss;                                \
 653   ed->data[1] = offset;                                                 \
 654   ed->data[2] = n_bytes;                                                \
 655   ed->data[3] = _tc->snd_rxt_bytes;                                     \
 656 }
 657
 658 #define TCP_EVT_DUPACK_SENT_HANDLER(_tc, ...)                           \
 659 {                                                                       \
 660   ELOG_TYPE_DECLARE (_e) =                                              \
 661   {                                                                     \
 662     .format = "dack-tx: rcv_nxt %u rcv_wnd %u snd_nxt %u av_wnd %u snd_wnd %u",\
 663     .format_args = "i4i4i4i4i4",                                        \
 664   };                                                                    \
 665   DECLARE_ETD(_tc, _e, 5);                                              \
 666   ed->data[0] = _tc->rcv_nxt - _tc->irs;                                \
 667   ed->data[1] = _tc->rcv_wnd;                                           \
 668   ed->data[2] = _tc->snd_nxt - _tc->iss;                                \
 669   ed->data[3] = tcp_available_snd_wnd(_tc);                             \
 670   ed->data[4] = _tc->snd_wnd;                                           \
 671 }
 672
 673 #define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)                           \
 674 {                                                                       \
 675   ELOG_TYPE_DECLARE (_e) =                                              \
 676   {                                                                     \
 677     .format = "dack-rx: snd_una %u cwnd %u snd_wnd %u flight %u rcv_wnd %u",\
 678     .format_args = "i4i4i4i4i4",                                        \
 679   };                                                                    \
 680   DECLARE_ETD(_tc, _e, 5);                                              \
 681   ed->data[0] = _tc->snd_una - _tc->iss;                                \
 682   ed->data[1] = _tc->cwnd;                                              \
 683   ed->data[2] = _tc->snd_wnd;                                           \
 684   ed->data[3] = tcp_flight_size(_tc);                                   \
 685   ed->data[4] = _tc->rcv_wnd;                                           \
 686 }
 687
 688 #define TCP_EVT_CC_PACK_HANDLER(_tc, ...)                               \
 689 {                                                                       \
 690   ELOG_TYPE_DECLARE (_e) =                                              \
 691   {                                                                     \
 692     .format = "pack: snd_una %u snd_una_max %u",                        \
 693     .format_args = "i4i4",                                              \
 694   };                                                                    \
 695   DECLARE_ETD(_tc, _e, 2);                                              \
 696   ed->data[0] = _tc->snd_una - _tc->iss;                                \
 697   ed->data[1] = _tc->snd_una_max - _tc->iss;                            \
 698 }
 699 #else
 700 #define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)
 701 #define TCP_EVT_DUPACK_SENT_HANDLER(_tc, ...)
 702 #define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)
 703 #define TCP_EVT_CC_PACK_HANDLER(_tc, ...)
 704 #define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...)
 705 #endif
 706
 707 /*
 708  * Congestion control stats
 709  */
 710 #if TCP_DEBUG_CC_STAT
 711
 712 #define STATS_INTERVAL 1
 713
 714 #define TCP_EVT_CC_RTO_STAT_HANDLER(_tc, ...)                           \
 715 {                                                                       \
 716 if (_tc->c_cc_stat_tstamp + STATS_INTERVAL < tcp_time_now())            \
 717 {                                                                       \
 718   ELOG_TYPE_DECLARE (_e) =                                              \
 719   {                                                                     \
 720     .format = "rto_stat: rto %u srtt %u rttvar %u ",                    \
 721     .format_args = "i4i4i4",                                            \
 722   };                                                                    \
 723   DECLARE_ETD(_tc, _e, 3);                                              \
 724   ed->data[0] = _tc->rto;                                               \
 725   ed->data[1] = _tc->srtt;                                              \
 726   ed->data[2] = _tc->rttvar;                                            \
 727 }                                                                       \
 728 }
 729
 730 #define TCP_EVT_CC_STAT_HANDLER(_tc, ...)                               \
 731 {                                                                       \
 732 if (_tc->c_cc_stat_tstamp + STATS_INTERVAL < tcp_time_now())            \
 733 {                                                                       \
 734   ELOG_TYPE_DECLARE (_e) =                                              \
 735   {                                                                     \
 736     .format = "cc_stat: cwnd %u flight %u space %u ssthresh %u snd_wnd %u",\
 737     .format_args = "i4i4i4i4i4",                                        \
 738   };                                                                    \
 739   DECLARE_ETD(_tc, _e, 5);                                              \
 740   ed->data[0] = _tc->cwnd;                                              \
 741   ed->data[1] = tcp_flight_size (_tc);                                  \
 742   ed->data[2] = tcp_snd_space (_tc);                                    \
 743   ed->data[3] = _tc->ssthresh;                                          \
 744   ed->data[4] = _tc->snd_wnd;                                           \
 745   TCP_EVT_CC_RTO_STAT_HANDLER (_tc);                                    \
 746   _tc->c_cc_stat_tstamp = tcp_time_now();                               \
 747 }                                                                       \
 748 }
 749
 750 #else
 751 #define TCP_EVT_CC_STAT_HANDLER(_tc, ...)
 752 #endif
 753
 754 #endif /* SRC_VNET_TCP_TCP_DEBUG_H_ */
 755 /*
 756  * fd.io coding-style-patch-verification: ON
 757  *
 758  * Local Variables:
 759  * eval: (c-set-style "gnu")
 760  * End:
 761  */