if (verbose > 1)
s = format (s, " %U\n%U", format_tcp_timers, tc, format_tcp_vars, tc);
}
+
return s;
}
return s;
}
+u8 *
+format_tcp_rcv_sacks (u8 * s, va_list * args)
+{
+ tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
+ sack_block_t *sacks = tc->rcv_opts.sacks;
+ sack_block_t *block;
+ int i, len = 0;
+
+ len = vec_len (sacks);
+ for (i = 0; i < len - 1; i++)
+ {
+ block = &sacks[i];
+ s = format (s, " start %u end %u\n", block->start - tc->iss,
+ block->end - tc->iss);
+ }
+ if (len)
+ {
+ block = &sacks[len - 1];
+ s = format (s, " start %u end %u", block->start - tc->iss,
+ block->end - tc->iss);
+ }
+ return s;
+}
+
u8 *
format_tcp_sack_hole (u8 * s, va_list * args)
{
s = format (s, "%U", format_tcp_sack_hole, hole);
hole = scoreboard_next_hole (sb, hole);
}
+
return s;
}
};
/* *INDENT-ON* */
+static u8 *
+tcp_scoreboard_dump_trace (u8 * s, sack_scoreboard_t * sb)
+{
+#if TCP_SCOREBOARD_TRACE
+
+ scoreboard_trace_elt_t *block;
+ int i = 0;
+
+ if (!sb->trace)
+ return s;
+
+ s = format (s, "scoreboard trace:");
+ vec_foreach (block, sb->trace)
+ {
+ s = format (s, "{%u, %u, %u, %u, %u}, ", block->start, block->end,
+ block->ack, block->snd_una_max, block->group);
+ if ((++i % 3) == 0)
+ s = format (s, "\n");
+ }
+ return s;
+#else
+ return 0;
+#endif
+}
+
+static clib_error_t *
+tcp_show_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd_arg)
+{
+ transport_connection_t *tconn = 0;
+ tcp_connection_t *tc;
+ u8 *s = 0;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_transport_connection, &tconn,
+ TRANSPORT_PROTO_TCP))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (!TCP_SCOREBOARD_TRACE)
+ {
+ vlib_cli_output (vm, "scoreboard tracing not enabled");
+ return 0;
+ }
+
+ tc = tcp_get_connection_from_transport (tconn);
+ s = tcp_scoreboard_dump_trace (s, &tc->sack_sb);
+ vlib_cli_output (vm, "%v", s);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) =
+{
+ .path = "show tcp scoreboard trace",
+ .short_help = "show tcp scoreboard trace <connection>",
+ .function = tcp_show_scoreboard_trace_fn,
+};
+/* *INDENT-ON* */
+u8 *
+tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose)
+{
+ int i, trace_len;
+ scoreboard_trace_elt_t *trace;
+ u32 next_ack, left, group, has_new_ack = 0;
+ tcp_connection_t _dummy_tc, *dummy_tc = &_dummy_tc;
+ sack_block_t *block;
+
+ if (!tc)
+ return s;
+
+ memset (dummy_tc, 0, sizeof (*dummy_tc));
+ tcp_connection_timers_init (dummy_tc);
+ scoreboard_init (&dummy_tc->sack_sb);
+ dummy_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
+
+#if TCP_SCOREBOARD_TRACE
+ trace = tc->sack_sb.trace;
+ trace_len = vec_len (tc->sack_sb.trace);
+#else
+ trace = 0;
+ trace_len = 0;
+#endif
+
+ for (i = 0; i < trace_len; i++)
+ {
+ if (trace[i].ack != 0)
+ {
+ dummy_tc->snd_una = trace[i].ack - 1448;
+ dummy_tc->snd_una_max = trace[i].ack;
+ }
+ }
+
+ left = 0;
+ while (left < trace_len)
+ {
+ group = trace[left].group;
+ vec_reset_length (dummy_tc->rcv_opts.sacks);
+ has_new_ack = 0;
+ while (trace[left].group == group)
+ {
+ if (trace[left].ack != 0)
+ {
+ if (verbose)
+ s = format (s, "Adding ack %u, snd_una_max %u, segs: ",
+ trace[left].ack, trace[left].snd_una_max);
+ dummy_tc->snd_una_max = trace[left].snd_una_max;
+ next_ack = trace[left].ack;
+ has_new_ack = 1;
+ }
+ else
+ {
+ if (verbose)
+ s = format (s, "[%u, %u], ", trace[left].start,
+ trace[left].end);
+ vec_add2 (dummy_tc->rcv_opts.sacks, block, 1);
+ block->start = trace[left].start;
+ block->end = trace[left].end;
+ }
+ left++;
+ }
+
+ /* Push segments */
+ tcp_rcv_sacks (dummy_tc, next_ack);
+ if (has_new_ack)
+ dummy_tc->snd_una = next_ack + dummy_tc->sack_sb.snd_una_adv;
+
+ if (verbose)
+ s = format (s, "result: %U", format_tcp_scoreboard,
+ &dummy_tc->sack_sb);
+
+ }
+ s = format (s, "result: %U", format_tcp_scoreboard, &dummy_tc->sack_sb);
+
+ return s;
+}
+
+static clib_error_t *
+tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd_arg)
+{
+ transport_connection_t *tconn = 0;
+ tcp_connection_t *tc = 0;
+ u8 *str = 0;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_transport_connection, &tconn,
+ TRANSPORT_PROTO_TCP))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (!TCP_SCOREBOARD_TRACE)
+ {
+ vlib_cli_output (vm, "scoreboard tracing not enabled");
+ return 0;
+ }
+
+ tc = tcp_get_connection_from_transport (tconn);
+ if (!tc)
+ {
+ vlib_cli_output (vm, "connection not found");
+ return 0;
+ }
+ str = tcp_scoreboard_replay (str, tc, 1);
+ vlib_cli_output (vm, "%v", str);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) =
+{
+ .path = "tcp replay scoreboard",
+ .short_help = "tcp replay scoreboard <connection>",
+ .function = tcp_scoreboard_trace_fn,
+};
+/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff