/* * Copyright (c) 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/tcp/tcp_debug.h> tcp_dbg_main_t tcp_dbg_main; void tcp_evt_track_register (elog_track_t * et) { tcp_dbg_main_t *tdm = &tcp_dbg_main; u32 fl_len, track_index; fl_len = vec_len (tdm->free_track_indices); if (fl_len) { track_index = tdm->free_track_indices[fl_len - 1]; _vec_len (tdm->free_track_indices) -= 1; et->track_index_plus_one = track_index + 1; } else elog_track_register (&vlib_global_main.elog_main, et); } static const char *tcp_evt_grp_str[] = { #define _(sym, str) str, foreach_tcp_evt_grp #undef _ }; static void tcp_debug_show_groups (void) { tcp_dbg_main_t *tdm = &tcp_dbg_main; vlib_main_t *vm = vlib_get_main (); int i = 0; vlib_cli_output (vm, "%-10s%-30s%-10s", "Index", "Group", "Level"); for (i = 0; i < TCP_EVT_N_GRP; i++) vlib_cli_output (vm, "%-10d%-30s%-10d", i, tcp_evt_grp_str[i], tdm->grp_dbg_lvl[i]); } static void tcp_debug_check_lc (void) { tcp_dbg_main_t *tdm = &tcp_dbg_main; int i, have_enabled = 0; if (tdm->grp_dbg_lvl[TCP_EVT_GRP_LC]) return; for (i = 0; i < TCP_EVT_N_GRP; i++) { if (tdm->grp_dbg_lvl[i]) { have_enabled = 1; break; } } /* Make sure LC is enabled for track initialization */ if (have_enabled) tdm->grp_dbg_lvl[TCP_EVT_GRP_LC] = 1; } static clib_error_t * tcp_debug_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; tcp_dbg_main_t *tdm = &tcp_dbg_main; u32 group = ~0, level = ~0; clib_error_t *error = 0; u8 is_show = 0; if (!TCP_DEBUG_ALWAYS) return clib_error_return (0, "must compile with TCP_DEBUG_ALWAYS set"); 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, "show")) is_show = 1; else if (unformat (line_input, "group %d", &group)) ; else if (unformat (line_input, "level %d", &level)) ; else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); goto done; } } if (is_show) { tcp_debug_show_groups (); goto done; } if (group >= TCP_EVT_N_GRP) { error = clib_error_return (0, "group out of bounds"); goto done; } if (group == ~0 || level == ~0) { error = clib_error_return (0, "group and level must be set"); goto done; } tdm->grp_dbg_lvl[group] = level; tcp_debug_check_lc (); done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (tcp_debug_command, static) = { .path = "tcp debug", .short_help = "tcp [show] [debug group <N> level <N>]", .function = tcp_debug_fn, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */