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https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-27 22:03:31 +01:00
make reusing circuits work (and be the default)
performance is better, but not by much. not sure why yet. svn:r153
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c35373a2cf
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@ -252,13 +252,32 @@ circuit_t *circuit_get_by_conn(connection_t *conn) {
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return NULL;
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}
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circuit_t *circuit_get_by_edge_type(char edge_type) {
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circuit_t *circ;
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for(circ=global_circuitlist;circ;circ = circ->next) {
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if(edge_type == EDGE_AP && circ->n_conn && circ->n_conn->type == CONN_TYPE_OR) {
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log(LOG_DEBUG,"circuit_get_by_edge_type(): Choosing n_aci %d.", circ->n_aci);
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return circ;
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}
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if(edge_type == EDGE_EXIT && circ->p_conn && circ->p_conn->type == CONN_TYPE_OR) {
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return circ;
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}
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log(LOG_DEBUG,"circuit_get_by_edge_type(): Skipping p_aci %d / n_aci %d.", circ->p_aci, circ->n_aci);
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}
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return NULL;
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}
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int circuit_deliver_data_cell_from_edge(cell_t *cell, circuit_t *circ, char edge_type) {
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int cell_direction;
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static int numsent_ap=0, numsent_exit=0;
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log(LOG_DEBUG,"circuit_deliver_data_cell_from_edge(): called, edge_type %d.", edge_type);
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if(edge_type == EDGE_AP) { /* i'm the AP */
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cell_direction = CELL_DIRECTION_OUT;
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numsent_ap++;
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log(LOG_DEBUG,"circuit_deliver_data_cell_from_edge(): now sent %d data cells from ap", numsent_ap);
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if(circ->p_receive_circwindow <= 0) {
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log(LOG_DEBUG,"circuit_deliver_data_cell_from_edge(): window 0, queueing for later.");
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circ->data_queue = data_queue_add(circ->data_queue, cell);
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@ -267,6 +286,8 @@ int circuit_deliver_data_cell_from_edge(cell_t *cell, circuit_t *circ, char edge
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circ->p_receive_circwindow--;
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} else { /* i'm the exit */
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cell_direction = CELL_DIRECTION_IN;
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numsent_exit++;
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log(LOG_DEBUG,"circuit_deliver_data_cell_from_edge(): now sent %d data cells from exit", numsent_exit);
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if(circ->n_receive_circwindow <= 0) {
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log(LOG_DEBUG,"circuit_deliver_data_cell_from_edge(): window 0, queueing for later.");
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circ->data_queue = data_queue_add(circ->data_queue, cell);
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@ -491,6 +512,7 @@ int circuit_consider_sending_sendme(circuit_t *circ, int edge_type) {
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void circuit_close(circuit_t *circ) {
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connection_t *conn;
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assert(circ);
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circuit_remove(circ);
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for(conn=circ->n_conn; conn; conn=conn->next_topic) {
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connection_send_destroy(circ->n_aci, circ->n_conn);
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@ -622,7 +622,7 @@ repeat_connection_package_raw_inbuf:
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cell.length += TOPIC_HEADER_SIZE;
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cell.command = CELL_DATA;
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if(circ->n_conn == conn) { /* send it backward. we're an exit. */
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if(conn->type == CONN_TYPE_EXIT) {
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cell.aci = circ->p_aci;
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if(circuit_deliver_data_cell_from_edge(&cell, circ, EDGE_EXIT) < 0) {
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log(LOG_DEBUG,"connection_package_raw_inbuf(): circuit_deliver_data_cell_from_edge (backward) failed. Closing.");
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@ -637,6 +637,7 @@ repeat_connection_package_raw_inbuf:
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}
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log(LOG_DEBUG,"connection_package_raw_inbuf(): receive_topicwindow at exit is %d",conn->n_receive_topicwindow);
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} else { /* send it forward. we're an AP */
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assert(conn->type == CONN_TYPE_AP);
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cell.aci = circ->n_aci;
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if(circuit_deliver_data_cell_from_edge(&cell, circ, EDGE_AP) < 0) {
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log(LOG_DEBUG,"connection_package_raw_inbuf(): circuit_deliver_data_cell_from_edge (forward) failed. Closing.");
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@ -123,20 +123,24 @@ int ap_handshake_process_socks(connection_t *conn) {
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}
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/* find the circuit that we should use, if there is one. */
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circ = NULL; /* FIXME don't reuse circs, at least for me. */
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circ = circuit_get_by_edge_type(EDGE_AP);
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/* now we're all ready to make an onion or send a begin */
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if(circ) {
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if(circ->state == CIRCUIT_STATE_OPEN) {
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if(ap_handshake_send_begin(conn, circ) < 0) {
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circuit_close(circ);
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return -1;
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}
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if(circ && circ->state == CIRCUIT_STATE_OPEN) {
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/* add it into the linked list of topics on this circuit */
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log(LOG_DEBUG,"ap_handshake_process_socks(): attaching new conn to circ. n_aci %d.", circ->n_aci);
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conn->next_topic = circ->p_conn;
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circ->p_conn = conn;
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if(ap_handshake_send_begin(conn, circ) < 0) {
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circuit_close(circ);
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return -1;
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}
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} else {
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if(ap_handshake_create_onion(conn) < 0) {
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circuit_close(circ);
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if(circ)
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circuit_close(circ);
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return -1;
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}
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}
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@ -370,6 +374,7 @@ int connection_ap_process_data_cell(cell_t *cell, circuit_t *circ) {
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connection_t *conn;
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int topic_command;
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int topic_id;
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static int num_seen=0;
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/* an incoming data cell has arrived */
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@ -379,6 +384,9 @@ int connection_ap_process_data_cell(cell_t *cell, circuit_t *circ) {
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*cell->payload = 0;
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topic_id = *(uint32_t *)cell->payload;
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log(LOG_DEBUG,"connection_ap_process_data_cell(): command %d topic %d", topic_command, topic_id);
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num_seen++;
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log(LOG_DEBUG,"connection_exit_process_data_cell(): Now seen %d data cells here.", num_seen);
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circuit_consider_sending_sendme(circ, EDGE_AP);
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@ -164,6 +164,7 @@ int connection_exit_process_data_cell(cell_t *cell, circuit_t *circ) {
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connection_t *conn;
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int topic_command;
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int topic_id;
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static num_seen=0;
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/* an outgoing data cell has arrived */
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@ -173,6 +174,8 @@ int connection_exit_process_data_cell(cell_t *cell, circuit_t *circ) {
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*cell->payload = 0;
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topic_id = *(uint32_t *)cell->payload;
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log(LOG_DEBUG,"connection_exit_process_data_cell(): command %d topic %d", topic_command, topic_id);
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num_seen++;
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log(LOG_DEBUG,"connection_exit_process_data_cell(): Now seen %d data cells here.", num_seen);
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circuit_consider_sending_sendme(circ, EDGE_EXIT);
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@ -55,6 +55,9 @@ int connection_dns_process_inbuf(connection_t *conn) {
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assert(conn->inbuf);
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if(conn->inbuf_datalen <= 0)
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return 0;
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/* peek into the inbuf, so we can check if it's all here */
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length = *conn->inbuf; /* warning: abstraction violation :( */
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assert(length < 240);
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@ -231,7 +234,7 @@ int dns_read_block(int fd, char *string, unsigned char *len) {
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}
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string[*len] = 0; /* null terminate it, just in case */
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log(LOG_INFO,"dns_read_block(): Read '%s', len %u.",string,*len); // XXX make silent
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// log(LOG_INFO,"dns_read_block(): Read '%s', len %u.",string,*len);
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return 0;
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}
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@ -267,7 +270,7 @@ static int dns_read_tor_question(int index) {
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&slave_data[index].question_len) < 0)
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return -1;
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log(LOG_INFO,"dns_read_tor_question(): Read question '%s'",slave_data[index].question);
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// log(LOG_INFO,"dns_read_tor_question(): Read question '%s'",slave_data[index].question);
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return 0;
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}
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@ -358,7 +361,7 @@ int dns_tor_to_master(char *address) {
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return -1;
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}
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log(LOG_DEBUG,"dns_tor_to_master(): submitted '%s'", address);
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// log(LOG_DEBUG,"dns_tor_to_master(): submitted '%s'", address);
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return 0;
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}
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@ -454,6 +454,7 @@ aci_t get_unique_aci_by_addr_port(uint32_t addr, uint16_t port, int aci_type);
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circuit_t *circuit_get_by_aci_conn(aci_t aci, connection_t *conn);
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circuit_t *circuit_get_by_conn(connection_t *conn);
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circuit_t *circuit_get_by_edge_type(char edge_type);
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circuit_t *circuit_enumerate_by_naddr_nport(circuit_t *start, uint32_t naddr, uint16_t nport);
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int circuit_deliver_data_cell_from_edge(cell_t *cell, circuit_t *circ, char edge_type);
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