diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/tcp/tcp_cli.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_cli.c b/src/vnet/tcp/tcp_cli.c index 02cbdde7222..ada2ac0b4d5 100644 --- a/src/vnet/tcp/tcp_cli.c +++ b/src/vnet/tcp/tcp_cli.c @@ -897,6 +897,110 @@ VLIB_CLI_COMMAND (clear_tcp_stats_command, static) = }; /* *INDENT-ON* */ +static void +tcp_show_half_open (vlib_main_t * vm, u32 start, u32 end, u8 verbose) +{ + tcp_main_t *tm = &tcp_main; + u8 output_suppressed = 0; + u32 n_elts, count = 0; + tcp_connection_t *tc; + int max_index, i; + + n_elts = pool_elts (tm->half_open_connections); + max_index = pool_len (tm->half_open_connections) - 1; + if (verbose && end == ~0 && n_elts > 50) + { + vlib_cli_output (vm, "Too many connections, use range <start> <end>"); + return; + } + + if (!verbose) + { + vlib_cli_output (vm, "%u tcp half-open connections", n_elts); + return; + } + + for (i = start; i <= clib_min (end, max_index); i++) + { + if (pool_is_free_index (tm->half_open_connections, i)) + continue; + + tc = pool_elt_at_index (tm->half_open_connections, i); + + count += 1; + if (verbose) + { + if (count > 50 || (verbose > 1 && count > 10)) + { + output_suppressed = 1; + continue; + } + } + vlib_cli_output (vm, "%U", format_tcp_connection, tc, verbose); + } + if (!output_suppressed) + vlib_cli_output (vm, "%u tcp half-open connections", n_elts); + else + vlib_cli_output (vm, "%u tcp half-open connections matched. Output " + "suppressed. Use finer grained filter.", count); + +} + +static clib_error_t * +show_tcp_half_open_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u32 start, end = ~0, verbose = 0; + clib_error_t *error = 0; + + session_cli_return_if_not_enabled (); + + if (!unformat_user (input, unformat_line_input, line_input)) + { + tcp_show_half_open (vm, 0, ~0, 0); + return 0; + } + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "range %u %u", &start, &end)) + ; + else if (unformat (line_input, "verbose %d"), &verbose) + ; + else if (unformat (line_input, "verbose")) + verbose = 1; + else + { + error = clib_error_return (0, "unknown input `%U'", + format_unformat_error, input); + goto done; + } + } + + if (start > end) + { + error = clib_error_return (0, "invalid range start: %u end: %u", start, + end); + goto done; + } + + tcp_show_half_open (vm, start, end, verbose); + +done: + unformat_free (line_input); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_tcp_half_open_command, static) = +{ + .path = "show tcp half-open", + .short_help = "show tcp half-open [verbose <n>] [range <start> <end>]", + .function = show_tcp_half_open_fn, +}; +/* *INDENT-ON* */ + uword unformat_tcp_cc_algo (unformat_input_t * input, va_list * va) { |