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https://github.com/ntop/n2n.git
synced 2024-09-19 16:41:11 +02:00
fixed minor timing issues (#616)
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parent
de76b16fd5
commit
ba9a32fb30
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@ -220,7 +220,7 @@ int time_stamp_verify_and_update (uint64_t stamp, uint64_t * previous_stamp, int
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size_t purge_peer_list (struct peer_info ** peer_list,
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time_t purge_before);
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size_t clear_peer_list (struct peer_info ** peer_list);
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size_t purge_expired_registrations (struct peer_info ** peer_list, time_t* p_last_purge, int timeout);
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size_t purge_expired_nodes (struct peer_info **peer_list, time_t *p_last_purge, int frequency, int timeout);
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/* Edge conf */
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void edge_init_conf_defaults (n2n_edge_conf_t *conf);
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@ -52,8 +52,7 @@
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* values should be at least 3*SOCKET_TIMEOUT_INTERVAL_SECS apart. */
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#define LAST_SEEN_SN_ACTIVE 20 /* sec, indicates supernodes that are proven to be active */
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#define LAST_SEEN_SN_INACTIVE 90 /* sec, indicates supernodes that are proven to be inactive: they will be purged */
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#define LAST_SEEN_SN_NEW (LAST_SEEN_SN_INACTIVE - LAST_SEEN_SN_ACTIVE) / 2 /* sec, indicates supernodes with unsure status, must be tested to check if they are active */
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#define LAST_SEEN_SN_NEW (LAST_SEEN_SN_INACTIVE - 3 * RE_REG_AND_PURGE_FREQUENCY) /* sec, indicates supernodes with unsure status, must be tested to check if they are active */
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#define IFACE_UPDATE_INTERVAL (30) /* sec. How long it usually takes to get an IP lease. */
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#define TRANSOP_TICK_INTERVAL (10) /* sec */
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@ -451,7 +451,7 @@ static void register_with_new_peer (n2n_edge_t *eee,
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HASH_FIND_PEER(eee->pending_peers, mac, scan);
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/* NOTE: pending_peers are purged periodically with purge_expired_registrations */
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/* NOTE: pending_peers are purged periodically with purge_expired_nodes */
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if(scan == NULL) {
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scan = calloc(1, sizeof(struct peer_info));
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@ -2133,6 +2133,7 @@ void readFromIPSocket (n2n_edge_t * eee, int in_sock) {
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}
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if(0 == memcmp(ra.cookie, eee->curr_sn->last_cookie, N2N_COOKIE_SIZE)) {
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payload = (n2n_REGISTER_SUPER_ACK_payload_t*)tmpbuf;
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for(i = 0; i < ra.num_sn; i++) {
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@ -2151,7 +2152,7 @@ void readFromIPSocket (n2n_edge_t * eee, int in_sock) {
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sn->last_seen = now - LAST_SEEN_SN_NEW;
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traceEvent(TRACE_NORMAL, "Supernode '%s' added to the list of supernodes.", sn->ip_addr);
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}
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// shfiting to the next payload entry
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// shift to next payload entry
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payload++;
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}
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@ -2406,8 +2407,10 @@ int run_edge_loop (n2n_edge_t * eee, int *keep_running) {
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/* Finished processing select data. */
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update_supernode_reg(eee, nowTime);
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numPurged = purge_expired_registrations(&eee->known_peers, &last_purge_known, PURGE_REGISTRATION_FREQUENCY);
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numPurged += purge_expired_registrations(&eee->pending_peers, &last_purge_pending, PURGE_REGISTRATION_FREQUENCY);
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numPurged = purge_expired_nodes(&eee->known_peers, &last_purge_known,
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PURGE_REGISTRATION_FREQUENCY, REGISTRATION_TIMEOUT);
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numPurged += purge_expired_nodes(&eee->pending_peers, &last_purge_pending,
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PURGE_REGISTRATION_FREQUENCY, REGISTRATION_TIMEOUT);
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if(numPurged > 0) {
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traceEvent(TRACE_INFO, "%u peers removed. now: pending=%u, operational=%u",
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@ -439,18 +439,19 @@ void print_n2n_version () {
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/* *********************************************** */
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size_t purge_expired_registrations (struct peer_info ** peer_list, time_t* p_last_purge, int timeout) {
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size_t purge_expired_nodes (struct peer_info **peer_list, time_t *p_last_purge,
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int frequency, int timeout) {
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time_t now = time(NULL);
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size_t num_reg = 0;
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if((now - (*p_last_purge)) < timeout) {
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if((now - (*p_last_purge)) < frequency) {
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return 0;
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}
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traceEvent(TRACE_DEBUG, "Purging old registrations");
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num_reg = purge_peer_list(peer_list, now - REGISTRATION_TIMEOUT);
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num_reg = purge_peer_list(peer_list, now - timeout);
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(*p_last_purge) = now;
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traceEvent(TRACE_DEBUG, "Remove %ld registrations", num_reg);
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101
src/sn_utils.c
101
src/sn_utils.c
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@ -403,7 +403,7 @@ static int update_edge (n2n_sn_t *sss,
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if(NULL == scan) {
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/* Not known */
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if(skip_add == SN_ADD) {
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scan = (struct peer_info *) calloc(1, sizeof(struct peer_info)); /* deallocated in purge_expired_registrations */
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scan = (struct peer_info *) calloc(1, sizeof(struct peer_info)); /* deallocated in purge_expired_nodes */
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memcpy(&(scan->mac_addr), reg->edgeMac, sizeof(n2n_mac_t));
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scan->dev_addr.net_addr = reg->dev_addr.net_addr;
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scan->dev_addr.net_bitlen = reg->dev_addr.net_bitlen;
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@ -658,67 +658,66 @@ static int re_register_and_purge_supernodes (n2n_sn_t *sss, struct sn_community
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return 0;
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}
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// purge long-time-not-seen supernodes
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purge_expired_nodes(&(comm->edges), p_last_re_reg_and_purge,
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RE_REG_AND_PURGE_FREQUENCY, LAST_SEEN_SN_INACTIVE);
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if(comm != NULL) {
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HASH_ITER(hh,comm->edges,peer,tmp) {
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time = now - peer->last_seen;
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if(time <= LAST_SEEN_SN_ACTIVE) {
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continue;
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}
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if((time < LAST_SEEN_SN_INACTIVE)
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|| (peer->purgeable == SN_UNPURGEABLE)) {
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/* re-regitser (send REGISTER_SUPER) */
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uint8_t pktbuf[N2N_PKT_BUF_SIZE] = {0};
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size_t idx;
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/* ssize_t sent; */
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n2n_common_t cmn;
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n2n_cookie_t cookie;
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n2n_REGISTER_SUPER_t reg;
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n2n_sock_str_t sockbuf;
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/* re-register (send REGISTER_SUPER) */
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uint8_t pktbuf[N2N_PKT_BUF_SIZE] = {0};
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size_t idx;
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/* ssize_t sent; */
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n2n_common_t cmn;
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n2n_cookie_t cookie;
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n2n_REGISTER_SUPER_t reg;
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n2n_sock_str_t sockbuf;
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memset(&cmn, 0, sizeof(cmn));
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memset(®, 0, sizeof(reg));
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memset(&cmn, 0, sizeof(cmn));
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memset(®, 0, sizeof(reg));
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cmn.ttl = N2N_DEFAULT_TTL;
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cmn.pc = n2n_register_super;
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cmn.flags = N2N_FLAGS_FROM_SUPERNODE;
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memcpy(cmn.community, comm->community, N2N_COMMUNITY_SIZE);
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cmn.ttl = N2N_DEFAULT_TTL;
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cmn.pc = n2n_register_super;
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cmn.flags = N2N_FLAGS_FROM_SUPERNODE;
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memcpy(cmn.community, comm->community, N2N_COMMUNITY_SIZE);
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for(idx = 0; idx < N2N_COOKIE_SIZE; ++idx) {
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cookie[idx] = n2n_rand() % 0xff;
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}
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memcpy(reg.cookie, cookie, N2N_COOKIE_SIZE);
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reg.dev_addr.net_addr = ntohl(peer->dev_addr.net_addr);
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reg.dev_addr.net_bitlen = mask2bitlen(ntohl(peer->dev_addr.net_bitlen));
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memcpy(&(reg.auth), &(sss->auth), sizeof(n2n_auth_t));
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idx = 0;
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encode_mac(reg.edgeMac, &idx, sss->mac_addr);
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idx = 0;
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encode_REGISTER_SUPER(pktbuf, &idx, &cmn, ®);
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traceEvent(TRACE_DEBUG, "send REGISTER_SUPER to %s",
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sock_to_cstr(sockbuf, &(peer->sock)));
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packet_header_encrypt(pktbuf, idx, idx,
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comm->header_encryption_ctx, comm->header_iv_ctx,
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time_stamp());
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/* sent = */ sendto_sock(sss, &(peer->sock), pktbuf, idx);
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}
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if(time >= LAST_SEEN_SN_INACTIVE) {
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purge_expired_registrations(&(comm->edges), &time, LAST_SEEN_SN_INACTIVE); /* purge not-seen-long-time supernodes*/
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for(idx = 0; idx < N2N_COOKIE_SIZE; ++idx) {
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cookie[idx] = n2n_rand() % 0xff;
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}
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memcpy(reg.cookie, cookie, N2N_COOKIE_SIZE);
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reg.dev_addr.net_addr = ntohl(peer->dev_addr.net_addr);
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reg.dev_addr.net_bitlen = mask2bitlen(ntohl(peer->dev_addr.net_bitlen));
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memcpy(&(reg.auth), &(sss->auth), sizeof(n2n_auth_t));
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idx = 0;
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encode_mac(reg.edgeMac, &idx, sss->mac_addr);
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idx = 0;
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encode_REGISTER_SUPER(pktbuf, &idx, &cmn, ®);
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traceEvent(TRACE_DEBUG, "send REGISTER_SUPER to %s",
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sock_to_cstr(sockbuf, &(peer->sock)));
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packet_header_encrypt(pktbuf, idx, idx,
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comm->header_encryption_ctx, comm->header_iv_ctx,
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time_stamp());
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/* sent = */ sendto_sock(sss, &(peer->sock), pktbuf, idx);
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}
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}
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(*p_last_re_reg_and_purge) = now;
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return 0; /* OK */
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}
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static int purge_expired_communities (n2n_sn_t *sss,
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time_t* p_last_purge,
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time_t now) {
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@ -733,6 +732,10 @@ static int purge_expired_communities (n2n_sn_t *sss,
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traceEvent(TRACE_DEBUG, "Purging old communities and edges");
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HASH_ITER(hh, sss->communities, comm, tmp) {
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// federation is taken care of in re_register_and_purge_supernodes()
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if(comm->is_federation == IS_FEDERATION)
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continue;
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num_reg += purge_peer_list(&comm->edges, now - REGISTRATION_TIMEOUT);
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if((comm->edges == NULL) && (comm->purgeable == COMMUNITY_PURGEABLE)) {
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traceEvent(TRACE_INFO, "Purging idle community %s", comm->community);
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@ -1306,8 +1309,6 @@ static int process_udp (n2n_sn_t * sss,
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p = add_sn_to_list_by_mac_or_sock(&(sss->federation->edges), &(ack.sock), reg.edgeMac, &skip_add);
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}
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// REVISIT: consider adding last_seen
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/* Skip random numbers of supernodes before payload assembling, calculating an appropriate random_number.
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* That way, all supernodes have a chance to be propagated with REGISTER_SUPER_ACK. */
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skip = HASH_COUNT(sss->federation->edges) - (int)(REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE / REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE);
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@ -1321,9 +1322,9 @@ static int process_udp (n2n_sn_t * sss,
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continue;
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}
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if(memcmp(&(peer->sock), &(ack.sock), sizeof(n2n_sock_t)) == 0) continue; /* a supernode doesn't add itself to the payload */
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if((now - peer->last_seen) >= (2*LAST_SEEN_SN_ACTIVE)) continue; /* skip long-time-not-seen supernodes.
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* We need to allow for a little extra time because supernodes sometimes exceed
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* their SN_ACTIVE time before they get re-registred to. */
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if((now - peer->last_seen) >= LAST_SEEN_SN_NEW) continue; /* skip long-time-not-seen supernodes.
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* We need to allow for a little extra time because supernodes sometimes exceed
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* their SN_ACTIVE time before they get re-registred to. */
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if(((++num)*REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE) > REG_SUPER_ACK_PAYLOAD_SPACE) break; /* no more space available in REGISTER_SUPER_ACK payload */
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memcpy(&(payload->sock), &(peer->sock), sizeof(n2n_sock_t));
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memcpy(payload->mac, peer->mac_addr, sizeof(n2n_mac_t));
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