commit d29a8ad564757866dee8d2cbd940c5028a03f2e3 Author: Nick Mathewson nickm@torproject.org Date: Tue Mar 10 10:07:41 2015 -0400
Add link protocol version counts to the heartbeat message
Closes ticket 15212 --- changes/ticket15212 | 6 ++++++ src/or/channeltls.c | 3 +++ src/or/connection_or.c | 1 + src/or/rephist.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ src/or/rephist.h | 4 ++++ src/or/status.c | 4 +++- src/test/test_status.c | 8 +++++++- 7 files changed, 68 insertions(+), 2 deletions(-)
diff --git a/changes/ticket15212 b/changes/ticket15212 new file mode 100644 index 0000000..2c41e38 --- /dev/null +++ b/changes/ticket15212 @@ -0,0 +1,6 @@ + o Minor features (heartbeat): + + - On relays, report how many connections we negotiated using each + version of the Tor link protocols. This information will let us + know if removing support for very old versions of the Tor + protocols is harming the network. Closes ticket 15212. diff --git a/src/or/channeltls.c b/src/or/channeltls.c index e194c1c..1cf697c 100644 --- a/src/or/channeltls.c +++ b/src/or/channeltls.c @@ -23,6 +23,7 @@ #include "connection_or.h" #include "control.h" #include "relay.h" +#include "rephist.h" #include "router.h" #include "routerlist.h" #include "scheduler.h" @@ -1463,6 +1464,8 @@ channel_tls_process_versions_cell(var_cell_t *cell, channel_tls_t *chan) return; }
+ rep_hist_note_negotiated_link_proto(highest_supported_version, started_here); + chan->conn->link_proto = highest_supported_version; chan->conn->handshake_state->received_versions = 1;
diff --git a/src/or/connection_or.c b/src/or/connection_or.c index 85462d8..e0dff1c 100644 --- a/src/or/connection_or.c +++ b/src/or/connection_or.c @@ -1819,6 +1819,7 @@ connection_tls_finish_handshake(or_connection_t *conn) conn->base_.port, digest_rcvd, 0); } tor_tls_block_renegotiation(conn->tls); + rep_hist_note_negotiated_link_proto(1, started_here); return connection_or_set_state_open(conn); } else { connection_or_change_state(conn, OR_CONN_STATE_OR_HANDSHAKING_V2); diff --git a/src/or/rephist.c b/src/or/rephist.c index 3490882..fe0997c 100644 --- a/src/or/rephist.c +++ b/src/or/rephist.c @@ -3121,6 +3121,50 @@ rep_hist_hs_stats_write(time_t now) return start_of_hs_stats_interval + WRITE_STATS_INTERVAL; }
+#define MAX_LINK_PROTO_TO_LOG 4 +static uint64_t link_proto_count[MAX_LINK_PROTO_TO_LOG+1][2]; + +/** Note that we negotiated link protocol version <b>link_proto</b>, on + * a connection that started here iff <b>started_here</b> is true. + */ +void +rep_hist_note_negotiated_link_proto(unsigned link_proto, int started_here) +{ + started_here = !!started_here; /* force to 0 or 1 */ + if (link_proto > MAX_LINK_PROTO_TO_LOG) { + log_warn(LD_BUG, "Can't log link protocol %u", link_proto); + return; + } + + link_proto_count[link_proto][started_here]++; +} + +/** Log a heartbeat message explaining how many connections of each link + * protocol version we have used. + */ +void +rep_hist_log_link_protocol_counts(void) +{ + log_notice(LD_HEARTBEAT, + "Since startup, we have initiated " + U64_FORMAT" v1 connections, " + U64_FORMAT" v2 connections, " + U64_FORMAT" v3 connections, and " + U64_FORMAT" v4 connections; and received " + U64_FORMAT" v1 connections, " + U64_FORMAT" v2 connections, " + U64_FORMAT" v3 connections, and " + U64_FORMAT" v4 connections.", + U64_PRINTF_ARG(link_proto_count[1][1]), + U64_PRINTF_ARG(link_proto_count[2][1]), + U64_PRINTF_ARG(link_proto_count[3][1]), + U64_PRINTF_ARG(link_proto_count[4][1]), + U64_PRINTF_ARG(link_proto_count[1][0]), + U64_PRINTF_ARG(link_proto_count[2][0]), + U64_PRINTF_ARG(link_proto_count[3][0]), + U64_PRINTF_ARG(link_proto_count[4][0])); +} + /** Free all storage held by the OR/link history caches, by the * bandwidth history arrays, by the port history, or by statistics . */ void diff --git a/src/or/rephist.h b/src/or/rephist.h index 42710c4..f94b4e8 100644 --- a/src/or/rephist.h +++ b/src/or/rephist.h @@ -108,5 +108,9 @@ void rep_hist_stored_maybe_new_hs(const crypto_pk_t *pubkey);
void rep_hist_free_all(void);
+void rep_hist_note_negotiated_link_proto(unsigned link_proto, + int started_here); +void rep_hist_log_link_protocol_counts(void); + #endif
diff --git a/src/or/status.c b/src/or/status.c index 2acdd28..8f7be0a 100644 --- a/src/or/status.c +++ b/src/or/status.c @@ -136,8 +136,10 @@ log_heartbeat(time_t now) "Average packaged cell fullness: %2.3f%%. " "TLS write overhead: %.f%%", fullness_pct, overhead_pct);
- if (public_server_mode(options)) + if (public_server_mode(options)) { rep_hist_log_circuit_handshake_stats(now); + rep_hist_log_link_protocol_counts(); + }
circuit_log_ancient_one_hop_circuits(1800);
diff --git a/src/test/test_status.c b/src/test/test_status.c index 0aa82ca..3888a1b 100644 --- a/src/test/test_status.c +++ b/src/test/test_status.c @@ -337,7 +337,7 @@ NS(test_main)(void *arg) actual = log_heartbeat(0);
tt_int_op(actual, OP_EQ, expected); - tt_int_op(CALLED(logv), OP_EQ, 4); + tt_int_op(CALLED(logv), OP_EQ, 5);
done: NS_UNMOCK(tls_get_write_overhead_ratio); @@ -430,6 +430,12 @@ NS(logv)(int severity, log_domain_mask_t domain, tt_int_op(va_arg(ap, int), OP_EQ, 1); /* handshakes assigned (NTOR) */ tt_int_op(va_arg(ap, int), OP_EQ, 1); /* handshakes requested (NTOR) */ break; + case 4: + tt_int_op(severity, OP_EQ, LOG_NOTICE); + tt_int_op(domain, OP_EQ, LD_HEARTBEAT); + tt_ptr_op(strstr(funcname, "rep_hist_log_link_protocol_counts"), + OP_NE, NULL); + break; default: tt_abort_msg("unexpected call to logv()"); // TODO: prettyprint args break;