list(APPEND msg_srcs
async/AsyncConnection.cc
async/AsyncMessenger.cc
- async/Protocol.cc
+ async/ProtocolV1.cc
async/Event.cc
async/EventSelect.cc
async/PosixStack.cc
#include "AsyncMessenger.h"
#include "AsyncConnection.h"
-#include "Protocol.h"
+#include "ProtocolV1.h"
#include "messages/MOSDOp.h"
#include "messages/MOSDOpReply.h"
+++ /dev/null
-#include "Protocol.h"
-
-#include "common/errno.h"
-
-#include "AsyncConnection.h"
-#include "AsyncMessenger.h"
-#include "common/EventTrace.h"
-#include "include/random.h"
-
-#define dout_subsys ceph_subsys_ms
-#undef dout_prefix
-#define dout_prefix _conn_prefix(_dout)
-ostream &ProtocolV1::_conn_prefix(std::ostream *_dout) {
- return *_dout << "-- " << messenger->get_myaddrs().legacy_addr() << " >> "
- << connection->peer_addrs.legacy_addr() << " conn("
- << connection << (connection->msgr2 ? " msgr2" : " legacy")
- << " :" << connection->port << " s=" << get_state_name(state)
- << " pgs=" << peer_global_seq << " cs=" << connect_seq
- << " l=" << connection->policy.lossy << ").";
-}
-
-#define WRITE(B, C) write(CONTINUATION(C), B)
-
-#define READ(L, C) read(CONTINUATION(C), L)
-
-#define READB(L, B, C) read(CONTINUATION(C), L, B)
-
-// Constant to limit starting sequence number to 2^31. Nothing special about
-// it, just a big number. PLR
-#define SEQ_MASK 0x7fffffff
-
-const int ASYNC_COALESCE_THRESHOLD = 256;
-
-using namespace std;
-
-static void alloc_aligned_buffer(bufferlist &data, unsigned len, unsigned off) {
- // create a buffer to read into that matches the data alignment
- unsigned alloc_len = 0;
- unsigned left = len;
- unsigned head = 0;
- if (off & ~CEPH_PAGE_MASK) {
- // head
- alloc_len += CEPH_PAGE_SIZE;
- head = std::min<uint64_t>(CEPH_PAGE_SIZE - (off & ~CEPH_PAGE_MASK), left);
- left -= head;
- }
- alloc_len += left;
- bufferptr ptr(buffer::create_small_page_aligned(alloc_len));
- if (head) ptr.set_offset(CEPH_PAGE_SIZE - head);
- data.push_back(std::move(ptr));
-}
-
-Protocol::Protocol(AsyncConnection *connection)
- : connection(connection),
- messenger(connection->async_msgr),
- cct(connection->async_msgr->cct) {}
-
-Protocol::~Protocol() {}
-
-/**
- * Protocol V1
- **/
-
-ProtocolV1::ProtocolV1(AsyncConnection *connection)
- : Protocol(connection),
- temp_buffer(nullptr),
- can_write(WriteStatus::NOWRITE),
- keepalive(false),
- connect_seq(0),
- peer_global_seq(0),
- msg_left(0),
- cur_msg_size(0),
- replacing(false),
- is_reset_from_peer(false),
- once_ready(false),
- state(NONE),
- global_seq(0),
- got_bad_auth(false),
- authorizer(nullptr),
- wait_for_seq(false) {
- temp_buffer = new char[4096];
-}
-
-ProtocolV1::~ProtocolV1() {
- ceph_assert(out_q.empty());
- ceph_assert(sent.empty());
-
- delete[] temp_buffer;
-
- if (authorizer) {
- delete authorizer;
- }
-}
-
-void ProtocolV1::connect() {
- this->state = START_CONNECT;
-
- // reset connect state variables
- got_bad_auth = false;
- if (authorizer) {
- delete authorizer;
- authorizer = nullptr;
- }
- authorizer_buf.clear();
- memset(&connect_msg, 0, sizeof(connect_msg));
- memset(&connect_reply, 0, sizeof(connect_reply));
-
- global_seq = messenger->get_global_seq();
-}
-
-void ProtocolV1::accept() { this->state = START_ACCEPT; }
-
-bool ProtocolV1::is_connected() {
- return can_write.load() == WriteStatus::CANWRITE;
-}
-
-void ProtocolV1::stop() {
- ldout(cct, 20) << __func__ << dendl;
- if (state == CLOSED) {
- return;
- }
-
- if (connection->delay_state) connection->delay_state->flush();
-
- ldout(cct, 2) << __func__ << dendl;
- std::lock_guard<std::mutex> l(connection->write_lock);
-
- reset_recv_state();
- discard_out_queue();
-
- connection->_stop();
-
- can_write = WriteStatus::CLOSED;
- state = CLOSED;
-}
-
-void ProtocolV1::fault() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (state == CLOSED || state == NONE) {
- ldout(cct, 10) << __func__ << " connection is already closed" << dendl;
- return;
- }
-
- if (connection->policy.lossy && state != START_CONNECT &&
- state != CONNECTING) {
- ldout(cct, 1) << __func__ << " on lossy channel, failing" << dendl;
- stop();
- connection->dispatch_queue->queue_reset(connection);
- return;
- }
-
- connection->write_lock.lock();
- can_write = WriteStatus::NOWRITE;
- is_reset_from_peer = false;
-
- // requeue sent items
- requeue_sent();
-
- if (!once_ready && out_q.empty() && state >= START_ACCEPT &&
- state <= ACCEPTING_WAIT_CONNECT_MSG_AUTH && !replacing) {
- ldout(cct, 10) << __func__ << " with nothing to send and in the half "
- << " accept state just closed" << dendl;
- connection->write_lock.unlock();
- stop();
- connection->dispatch_queue->queue_reset(connection);
- return;
- }
- replacing = false;
-
- connection->fault();
-
- reset_recv_state();
-
- if (connection->policy.standby && out_q.empty() && state != WAIT) {
- ldout(cct, 10) << __func__ << " with nothing to send, going to standby"
- << dendl;
- state = STANDBY;
- connection->write_lock.unlock();
- return;
- }
-
- connection->write_lock.unlock();
-
- if ((state >= START_CONNECT && state <= CONNECTING_SEND_CONNECT_MSG) ||
- state == WAIT) {
- // backoff!
- if (state == WAIT) {
- backoff.set_from_double(cct->_conf->ms_max_backoff);
- } else if (backoff == utime_t()) {
- backoff.set_from_double(cct->_conf->ms_initial_backoff);
- } else {
- backoff += backoff;
- if (backoff > cct->_conf->ms_max_backoff)
- backoff.set_from_double(cct->_conf->ms_max_backoff);
- }
-
- state = START_CONNECT;
- connection->state = AsyncConnection::STATE_CONNECTING;
- ldout(cct, 10) << __func__ << " waiting " << backoff << dendl;
- // woke up again;
- connection->register_time_events.insert(
- connection->center->create_time_event(backoff.to_nsec() / 1000,
- connection->wakeup_handler));
- } else {
- // policy maybe empty when state is in accept
- if (connection->policy.server) {
- ldout(cct, 0) << __func__ << " server, going to standby" << dendl;
- state = STANDBY;
- } else {
- ldout(cct, 0) << __func__ << " initiating reconnect" << dendl;
- connect_seq++;
- state = START_CONNECT;
- connection->state = AsyncConnection::STATE_CONNECTING;
- }
- backoff = utime_t();
- connection->center->dispatch_event_external(connection->read_handler);
- }
-}
-
-void ProtocolV1::send_message(Message *m) {
- bufferlist bl;
- uint64_t f = connection->get_features();
-
- // TODO: Currently not all messages supports reencode like MOSDMap, so here
- // only let fast dispatch support messages prepare message
- bool can_fast_prepare = messenger->ms_can_fast_dispatch(m);
- if (can_fast_prepare) {
- prepare_send_message(f, m, bl);
- }
-
- std::lock_guard<std::mutex> l(connection->write_lock);
- // "features" changes will change the payload encoding
- if (can_fast_prepare &&
- (can_write == WriteStatus::NOWRITE || connection->get_features() != f)) {
- // ensure the correctness of message encoding
- bl.clear();
- m->clear_payload();
- ldout(cct, 5) << __func__ << " clear encoded buffer previous " << f
- << " != " << connection->get_features() << dendl;
- }
- if (can_write == WriteStatus::CLOSED) {
- ldout(cct, 10) << __func__ << " connection closed."
- << " Drop message " << m << dendl;
- m->put();
- } else {
- m->trace.event("async enqueueing message");
- out_q[m->get_priority()].emplace_back(std::move(bl), m);
- ldout(cct, 15) << __func__ << " inline write is denied, reschedule m=" << m
- << dendl;
- if (can_write != WriteStatus::REPLACING) {
- connection->center->dispatch_event_external(connection->write_handler);
- }
- }
-}
-
-void ProtocolV1::prepare_send_message(uint64_t features, Message *m,
- bufferlist &bl) {
- ldout(cct, 20) << __func__ << " m " << *m << dendl;
-
- // associate message with Connection (for benefit of encode_payload)
- if (m->empty_payload()) {
- ldout(cct, 20) << __func__ << " encoding features " << features << " " << m
- << " " << *m << dendl;
- } else {
- ldout(cct, 20) << __func__ << " half-reencoding features " << features
- << " " << m << " " << *m << dendl;
- }
-
- // encode and copy out of *m
- m->encode(features, messenger->crcflags);
-
- bl.append(m->get_payload());
- bl.append(m->get_middle());
- bl.append(m->get_data());
-}
-
-void ProtocolV1::send_keepalive() {
- ldout(cct, 10) << __func__ << dendl;
- std::lock_guard<std::mutex> l(connection->write_lock);
- if (can_write != WriteStatus::CLOSED) {
- keepalive = true;
- connection->center->dispatch_event_external(connection->write_handler);
- }
-}
-
-void ProtocolV1::read_event() {
- ldout(cct, 20) << __func__ << dendl;
- switch (state) {
- case START_CONNECT:
- CONTINUATION_RUN(CONTINUATION(send_client_banner));
- break;
- case START_ACCEPT:
- CONTINUATION_RUN(CONTINUATION(send_server_banner));
- break;
- case OPENED:
- CONTINUATION_RUN(CONTINUATION(wait_message));
- break;
- case THROTTLE_MESSAGE:
- CONTINUATION_RUN(CONTINUATION(throttle_message));
- break;
- case THROTTLE_BYTES:
- CONTINUATION_RUN(CONTINUATION(throttle_bytes));
- break;
- case THROTTLE_DISPATCH_QUEUE:
- CONTINUATION_RUN(CONTINUATION(throttle_dispatch_queue));
- break;
- default:
- break;
- }
-}
-
-void ProtocolV1::write_event() {
- ldout(cct, 10) << __func__ << dendl;
- ssize_t r = 0;
-
- connection->write_lock.lock();
- if (can_write == WriteStatus::CANWRITE) {
- if (keepalive) {
- append_keepalive_or_ack();
- keepalive = false;
- }
-
- auto start = ceph::mono_clock::now();
- bool more;
- do {
- bufferlist data;
- Message *m = _get_next_outgoing(&data);
- if (!m) {
- break;
- }
-
- if (!connection->policy.lossy) {
- // put on sent list
- sent.push_back(m);
- m->get();
- }
- more = !out_q.empty();
- connection->write_lock.unlock();
-
- // send_message or requeue messages may not encode message
- if (!data.length()) {
- prepare_send_message(connection->get_features(), m, data);
- }
-
- r = write_message(m, data, more);
-
- connection->write_lock.lock();
- if (r == 0) {
- ;
- } else if (r < 0) {
- ldout(cct, 1) << __func__ << " send msg failed" << dendl;
- break;
- } else if (r > 0)
- break;
- } while (can_write == WriteStatus::CANWRITE);
- connection->write_lock.unlock();
-
- // if r > 0 mean data still lefted, so no need _try_send.
- if (r == 0) {
- uint64_t left = ack_left;
- if (left) {
- ceph_le64 s;
- s = in_seq;
- connection->outcoming_bl.append(CEPH_MSGR_TAG_ACK);
- connection->outcoming_bl.append((char *)&s, sizeof(s));
- ldout(cct, 10) << __func__ << " try send msg ack, acked " << left
- << " messages" << dendl;
- ack_left -= left;
- left = ack_left;
- r = connection->_try_send(left);
- } else if (is_queued()) {
- r = connection->_try_send();
- }
- }
-
- connection->logger->tinc(l_msgr_running_send_time,
- ceph::mono_clock::now() - start);
- if (r < 0) {
- ldout(cct, 1) << __func__ << " send msg failed" << dendl;
- connection->lock.lock();
- fault();
- connection->lock.unlock();
- return;
- }
- } else {
- connection->write_lock.unlock();
- connection->lock.lock();
- connection->write_lock.lock();
- if (state == STANDBY && !connection->policy.server && is_queued()) {
- ldout(cct, 10) << __func__ << " policy.server is false" << dendl;
- connection->_connect();
- } else if (connection->cs && state != NONE && state != CLOSED &&
- state != START_CONNECT) {
- r = connection->_try_send();
- if (r < 0) {
- ldout(cct, 1) << __func__ << " send outcoming bl failed" << dendl;
- connection->write_lock.unlock();
- fault();
- connection->lock.unlock();
- return;
- }
- }
- connection->write_lock.unlock();
- connection->lock.unlock();
- }
-}
-
-bool ProtocolV1::is_queued() {
- return !out_q.empty() || connection->is_queued();
-}
-
-void ProtocolV1::run_continuation(CtPtr continuation) {
- CONTINUATION_RUN(continuation);
-}
-
-CtPtr ProtocolV1::read(CONTINUATION_PARAM(next, ProtocolV1, char *, int),
- int len, char *buffer) {
- if (!buffer) {
- buffer = temp_buffer;
- }
- ssize_t r = connection->read(len, buffer,
- [CONTINUATION(next), this](char *buffer, int r) {
- CONTINUATION(next)->setParams(buffer, r);
- CONTINUATION_RUN(CONTINUATION(next));
- });
- if (r <= 0) {
- return CONTINUE(next, buffer, r);
- }
-
- return nullptr;
-}
-
-CtPtr ProtocolV1::write(CONTINUATION_PARAM(next, ProtocolV1, int),
- bufferlist &buffer) {
- ssize_t r = connection->write(buffer, [CONTINUATION(next), this](int r) {
- CONTINUATION(next)->setParams(r);
- CONTINUATION_RUN(CONTINUATION(next));
- });
- if (r <= 0) {
- return CONTINUE(next, r);
- }
-
- return nullptr;
-}
-
-CtPtr ProtocolV1::ready() {
- ldout(cct, 25) << __func__ << dendl;
-
- // make sure no pending tick timer
- if (connection->last_tick_id) {
- connection->center->delete_time_event(connection->last_tick_id);
- }
- connection->last_tick_id = connection->center->create_time_event(
- connection->inactive_timeout_us, connection->tick_handler);
-
- connection->write_lock.lock();
- can_write = WriteStatus::CANWRITE;
- if (is_queued()) {
- connection->center->dispatch_event_external(connection->write_handler);
- }
- connection->write_lock.unlock();
- connection->maybe_start_delay_thread();
-
- state = OPENED;
- return wait_message();
-}
-
-CtPtr ProtocolV1::wait_message() {
- if (state != OPENED) { // must have changed due to a replace
- return nullptr;
- }
-
- ldout(cct, 20) << __func__ << dendl;
-
- return READ(sizeof(char), handle_message);
-}
-
-CtPtr ProtocolV1::handle_message(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read tag failed" << dendl;
- return _fault();
- }
-
- char tag = buffer[0];
- ldout(cct, 20) << __func__ << " process tag " << (int)tag << dendl;
-
- if (tag == CEPH_MSGR_TAG_KEEPALIVE) {
- ldout(cct, 20) << __func__ << " got KEEPALIVE" << dendl;
- connection->set_last_keepalive(ceph_clock_now());
- } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2) {
- return READ(sizeof(ceph_timespec), handle_keepalive2);
- } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2_ACK) {
- return READ(sizeof(ceph_timespec), handle_keepalive2_ack);
- } else if (tag == CEPH_MSGR_TAG_ACK) {
- return READ(sizeof(ceph_le64), handle_tag_ack);
- } else if (tag == CEPH_MSGR_TAG_MSG) {
-#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
- ltt_recv_stamp = ceph_clock_now();
-#endif
- recv_stamp = ceph_clock_now();
- ldout(cct, 20) << __func__ << " begin MSG" << dendl;
- return READ(sizeof(ceph_msg_header), handle_message_header);
- } else if (tag == CEPH_MSGR_TAG_CLOSE) {
- ldout(cct, 20) << __func__ << " got CLOSE" << dendl;
- stop();
- } else {
- ldout(cct, 0) << __func__ << " bad tag " << (int)tag << dendl;
- return _fault();
- }
- return nullptr;
-}
-
-CtPtr ProtocolV1::handle_keepalive2(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
- return _fault();
- }
-
- ldout(cct, 30) << __func__ << " got KEEPALIVE2 tag ..." << dendl;
-
- ceph_timespec *t;
- t = (ceph_timespec *)buffer;
- utime_t kp_t = utime_t(*t);
- connection->write_lock.lock();
- append_keepalive_or_ack(true, &kp_t);
- connection->write_lock.unlock();
-
- ldout(cct, 20) << __func__ << " got KEEPALIVE2 " << kp_t << dendl;
- connection->set_last_keepalive(ceph_clock_now());
-
- if (is_connected()) {
- connection->center->dispatch_event_external(connection->write_handler);
- }
-
- return CONTINUE(wait_message);
-}
-
-void ProtocolV1::append_keepalive_or_ack(bool ack, utime_t *tp) {
- ldout(cct, 10) << __func__ << dendl;
- if (ack) {
- ceph_assert(tp);
- struct ceph_timespec ts;
- tp->encode_timeval(&ts);
- connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2_ACK);
- connection->outcoming_bl.append((char *)&ts, sizeof(ts));
- } else if (connection->has_feature(CEPH_FEATURE_MSGR_KEEPALIVE2)) {
- struct ceph_timespec ts;
- utime_t t = ceph_clock_now();
- t.encode_timeval(&ts);
- connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2);
- connection->outcoming_bl.append((char *)&ts, sizeof(ts));
- } else {
- connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE);
- }
-}
-
-CtPtr ProtocolV1::handle_keepalive2_ack(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
- return _fault();
- }
-
- ceph_timespec *t;
- t = (ceph_timespec *)buffer;
- connection->set_last_keepalive_ack(utime_t(*t));
- ldout(cct, 20) << __func__ << " got KEEPALIVE_ACK" << dendl;
-
- return CONTINUE(wait_message);
-}
-
-CtPtr ProtocolV1::handle_tag_ack(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read ack seq failed" << dendl;
- return _fault();
- }
-
- ceph_le64 seq;
- seq = *(ceph_le64 *)buffer;
- ldout(cct, 20) << __func__ << " got ACK" << dendl;
-
- ldout(cct, 15) << __func__ << " got ack seq " << seq << dendl;
- // trim sent list
- static const int max_pending = 128;
- int i = 0;
- Message *pending[max_pending];
- connection->write_lock.lock();
- while (!sent.empty() && sent.front()->get_seq() <= seq && i < max_pending) {
- Message *m = sent.front();
- sent.pop_front();
- pending[i++] = m;
- ldout(cct, 10) << __func__ << " got ack seq " << seq
- << " >= " << m->get_seq() << " on " << m << " " << *m
- << dendl;
- }
- connection->write_lock.unlock();
- for (int k = 0; k < i; k++) {
- pending[k]->put();
- }
-
- return CONTINUE(wait_message);
-}
-
-CtPtr ProtocolV1::handle_message_header(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read message header failed" << dendl;
- return _fault();
- }
-
- ldout(cct, 20) << __func__ << " got MSG header" << dendl;
-
- ceph_msg_header header;
- header = *((ceph_msg_header *)buffer);
-
- ldout(cct, 20) << __func__ << " got envelope type=" << header.type << " src "
- << entity_name_t(header.src) << " front=" << header.front_len
- << " data=" << header.data_len << " off " << header.data_off
- << dendl;
-
- if (messenger->crcflags & MSG_CRC_HEADER) {
- __u32 header_crc = 0;
- header_crc = ceph_crc32c(0, (unsigned char *)&header,
- sizeof(header) - sizeof(header.crc));
- // verify header crc
- if (header_crc != header.crc) {
- ldout(cct, 0) << __func__ << " got bad header crc " << header_crc
- << " != " << header.crc << dendl;
- return _fault();
- }
- }
-
- // Reset state
- data_buf.clear();
- front.clear();
- middle.clear();
- data.clear();
- current_header = header;
-
- state = THROTTLE_MESSAGE;
- return CONTINUE(throttle_message);
-}
-
-CtPtr ProtocolV1::throttle_message() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (connection->policy.throttler_messages) {
- ldout(cct, 10) << __func__ << " wants " << 1
- << " message from policy throttler "
- << connection->policy.throttler_messages->get_current()
- << "/" << connection->policy.throttler_messages->get_max()
- << dendl;
- if (!connection->policy.throttler_messages->get_or_fail()) {
- ldout(cct, 10) << __func__ << " wants 1 message from policy throttle "
- << connection->policy.throttler_messages->get_current()
- << "/" << connection->policy.throttler_messages->get_max()
- << " failed, just wait." << dendl;
- // following thread pool deal with th full message queue isn't a
- // short time, so we can wait a ms.
- if (connection->register_time_events.empty()) {
- connection->register_time_events.insert(
- connection->center->create_time_event(1000,
- connection->wakeup_handler));
- }
- return nullptr;
- }
- }
-
- state = THROTTLE_BYTES;
- return CONTINUE(throttle_bytes);
-}
-
-CtPtr ProtocolV1::throttle_bytes() {
- ldout(cct, 20) << __func__ << dendl;
-
- cur_msg_size = current_header.front_len + current_header.middle_len +
- current_header.data_len;
- if (cur_msg_size) {
- if (connection->policy.throttler_bytes) {
- ldout(cct, 10) << __func__ << " wants " << cur_msg_size
- << " bytes from policy throttler "
- << connection->policy.throttler_bytes->get_current() << "/"
- << connection->policy.throttler_bytes->get_max() << dendl;
- if (!connection->policy.throttler_bytes->get_or_fail(cur_msg_size)) {
- ldout(cct, 10) << __func__ << " wants " << cur_msg_size
- << " bytes from policy throttler "
- << connection->policy.throttler_bytes->get_current()
- << "/" << connection->policy.throttler_bytes->get_max()
- << " failed, just wait." << dendl;
- // following thread pool deal with th full message queue isn't a
- // short time, so we can wait a ms.
- if (connection->register_time_events.empty()) {
- connection->register_time_events.insert(
- connection->center->create_time_event(
- 1000, connection->wakeup_handler));
- }
- return nullptr;
- }
- }
- }
-
- state = THROTTLE_DISPATCH_QUEUE;
- return CONTINUE(throttle_dispatch_queue);
-}
-
-CtPtr ProtocolV1::throttle_dispatch_queue() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (cur_msg_size) {
- if (!connection->dispatch_queue->dispatch_throttler.get_or_fail(
- cur_msg_size)) {
- ldout(cct, 10)
- << __func__ << " wants " << cur_msg_size
- << " bytes from dispatch throttle "
- << connection->dispatch_queue->dispatch_throttler.get_current() << "/"
- << connection->dispatch_queue->dispatch_throttler.get_max()
- << " failed, just wait." << dendl;
- // following thread pool deal with th full message queue isn't a
- // short time, so we can wait a ms.
- if (connection->register_time_events.empty()) {
- connection->register_time_events.insert(
- connection->center->create_time_event(1000,
- connection->wakeup_handler));
- }
- return nullptr;
- }
- }
-
- throttle_stamp = ceph_clock_now();
-
- state = READ_MESSAGE_FRONT;
- return read_message_front();
-}
-
-CtPtr ProtocolV1::read_message_front() {
- ldout(cct, 20) << __func__ << dendl;
-
- unsigned front_len = current_header.front_len;
- if (front_len) {
- if (!front.length()) {
- front.push_back(buffer::create(front_len));
- }
- return READB(front_len, front.c_str(), handle_message_front);
- }
- return read_message_middle();
-}
-
-CtPtr ProtocolV1::handle_message_front(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read message front failed" << dendl;
- return _fault();
- }
-
- ldout(cct, 20) << __func__ << " got front " << front.length() << dendl;
-
- return read_message_middle();
-}
-
-CtPtr ProtocolV1::read_message_middle() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (current_header.middle_len) {
- if (!middle.length()) {
- middle.push_back(buffer::create(current_header.middle_len));
- }
- return READB(current_header.middle_len, middle.c_str(),
- handle_message_middle);
- }
-
- return read_message_data_prepare();
-}
-
-CtPtr ProtocolV1::handle_message_middle(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read message middle failed" << dendl;
- return _fault();
- }
-
- ldout(cct, 20) << __func__ << " got middle " << middle.length() << dendl;
-
- return read_message_data_prepare();
-}
-
-CtPtr ProtocolV1::read_message_data_prepare() {
- ldout(cct, 20) << __func__ << dendl;
-
- unsigned data_len = le32_to_cpu(current_header.data_len);
- unsigned data_off = le32_to_cpu(current_header.data_off);
-
- if (data_len) {
- // get a buffer
- map<ceph_tid_t, pair<bufferlist, int> >::iterator p =
- connection->rx_buffers.find(current_header.tid);
- if (p != connection->rx_buffers.end()) {
- ldout(cct, 10) << __func__ << " seleting rx buffer v " << p->second.second
- << " at offset " << data_off << " len "
- << p->second.first.length() << dendl;
- data_buf = p->second.first;
- // make sure it's big enough
- if (data_buf.length() < data_len)
- data_buf.push_back(buffer::create(data_len - data_buf.length()));
- data_blp = data_buf.begin();
- } else {
- ldout(cct, 20) << __func__ << " allocating new rx buffer at offset "
- << data_off << dendl;
- alloc_aligned_buffer(data_buf, data_len, data_off);
- data_blp = data_buf.begin();
- }
- }
-
- msg_left = data_len;
-
- return CONTINUE(read_message_data);
-}
-
-CtPtr ProtocolV1::read_message_data() {
- ldout(cct, 20) << __func__ << " msg_left=" << msg_left << dendl;
-
- if (msg_left > 0) {
- bufferptr bp = data_blp.get_current_ptr();
- unsigned read_len = std::min(bp.length(), msg_left);
-
- return READB(read_len, bp.c_str(), handle_message_data);
- }
-
- return read_message_footer();
-}
-
-CtPtr ProtocolV1::handle_message_data(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read data error " << dendl;
- return _fault();
- }
-
- bufferptr bp = data_blp.get_current_ptr();
- unsigned read_len = std::min(bp.length(), msg_left);
- ceph_assert(read_len < std::numeric_limits<int>::max());
- data_blp.advance(read_len);
- data.append(bp, 0, read_len);
- msg_left -= read_len;
-
- return CONTINUE(read_message_data);
-}
-
-CtPtr ProtocolV1::read_message_footer() {
- ldout(cct, 20) << __func__ << dendl;
-
- state = READ_FOOTER_AND_DISPATCH;
-
- unsigned len;
- if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
- len = sizeof(ceph_msg_footer);
- } else {
- len = sizeof(ceph_msg_footer_old);
- }
-
- return READ(len, handle_message_footer);
-}
-
-CtPtr ProtocolV1::handle_message_footer(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read footer data error " << dendl;
- return _fault();
- }
-
- ceph_msg_footer footer;
- ceph_msg_footer_old old_footer;
-
- if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
- footer = *((ceph_msg_footer *)buffer);
- } else {
- old_footer = *((ceph_msg_footer_old *)buffer);
- footer.front_crc = old_footer.front_crc;
- footer.middle_crc = old_footer.middle_crc;
- footer.data_crc = old_footer.data_crc;
- footer.sig = 0;
- footer.flags = old_footer.flags;
- }
-
- int aborted = (footer.flags & CEPH_MSG_FOOTER_COMPLETE) == 0;
- ldout(cct, 10) << __func__ << " aborted = " << aborted << dendl;
- if (aborted) {
- ldout(cct, 0) << __func__ << " got " << front.length() << " + "
- << middle.length() << " + " << data.length()
- << " byte message.. ABORTED" << dendl;
- return _fault();
- }
-
- ldout(cct, 20) << __func__ << " got " << front.length() << " + "
- << middle.length() << " + " << data.length() << " byte message"
- << dendl;
- Message *message = decode_message(cct, messenger->crcflags, current_header,
- footer, front, middle, data, connection);
- if (!message) {
- ldout(cct, 1) << __func__ << " decode message failed " << dendl;
- return _fault();
- }
-
- //
- // Check the signature if one should be present. A zero return indicates
- // success. PLR
- //
-
- if (session_security.get() == NULL) {
- ldout(cct, 10) << __func__ << " no session security set" << dendl;
- } else {
- if (session_security->check_message_signature(message)) {
- ldout(cct, 0) << __func__ << " Signature check failed" << dendl;
- message->put();
- return _fault();
- }
- }
- message->set_byte_throttler(connection->policy.throttler_bytes);
- message->set_message_throttler(connection->policy.throttler_messages);
-
- // store reservation size in message, so we don't get confused
- // by messages entering the dispatch queue through other paths.
- message->set_dispatch_throttle_size(cur_msg_size);
-
- message->set_recv_stamp(recv_stamp);
- message->set_throttle_stamp(throttle_stamp);
- message->set_recv_complete_stamp(ceph_clock_now());
-
- // check received seq#. if it is old, drop the message.
- // note that incoming messages may skip ahead. this is convenient for the
- // client side queueing because messages can't be renumbered, but the (kernel)
- // client will occasionally pull a message out of the sent queue to send
- // elsewhere. in that case it doesn't matter if we "got" it or not.
- uint64_t cur_seq = in_seq;
- if (message->get_seq() <= cur_seq) {
- ldout(cct, 0) << __func__ << " got old message " << message->get_seq()
- << " <= " << cur_seq << " " << message << " " << *message
- << ", discarding" << dendl;
- message->put();
- if (connection->has_feature(CEPH_FEATURE_RECONNECT_SEQ) &&
- cct->_conf->ms_die_on_old_message) {
- ceph_assert(0 == "old msgs despite reconnect_seq feature");
- }
- return nullptr;
- }
- if (message->get_seq() > cur_seq + 1) {
- ldout(cct, 0) << __func__ << " missed message? skipped from seq "
- << cur_seq << " to " << message->get_seq() << dendl;
- if (cct->_conf->ms_die_on_skipped_message) {
- ceph_assert(0 == "skipped incoming seq");
- }
- }
-
- message->set_connection(connection);
-
-#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
- if (message->get_type() == CEPH_MSG_OSD_OP ||
- message->get_type() == CEPH_MSG_OSD_OPREPLY) {
- utime_t ltt_processed_stamp = ceph_clock_now();
- double usecs_elapsed =
- (ltt_processed_stamp.to_nsec() - ltt_recv_stamp.to_nsec()) / 1000;
- ostringstream buf;
- if (message->get_type() == CEPH_MSG_OSD_OP)
- OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OP",
- false);
- else
- OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OPREPLY",
- false);
- }
-#endif
-
- // note last received message.
- in_seq = message->get_seq();
- ldout(cct, 5) << " rx " << message->get_source() << " seq "
- << message->get_seq() << " " << message << " " << *message
- << dendl;
-
- bool need_dispatch_writer = true;
- if (!connection->policy.lossy) {
- ack_left++;
- need_dispatch_writer = true;
- }
-
- state = OPENED;
-
- connection->logger->inc(l_msgr_recv_messages);
- connection->logger->inc(
- l_msgr_recv_bytes,
- cur_msg_size + sizeof(ceph_msg_header) + sizeof(ceph_msg_footer));
-
- messenger->ms_fast_preprocess(message);
- auto fast_dispatch_time = ceph::mono_clock::now();
- connection->logger->tinc(l_msgr_running_recv_time,
- fast_dispatch_time - connection->recv_start_time);
- if (connection->delay_state) {
- double delay_period = 0;
- if (rand() % 10000 < cct->_conf->ms_inject_delay_probability * 10000.0) {
- delay_period =
- cct->_conf->ms_inject_delay_max * (double)(rand() % 10000) / 10000.0;
- ldout(cct, 1) << "queue_received will delay after "
- << (ceph_clock_now() + delay_period) << " on " << message
- << " " << *message << dendl;
- }
- connection->delay_state->queue(delay_period, message);
- } else if (messenger->ms_can_fast_dispatch(message)) {
- connection->lock.unlock();
- connection->dispatch_queue->fast_dispatch(message);
- connection->recv_start_time = ceph::mono_clock::now();
- connection->logger->tinc(l_msgr_running_fast_dispatch_time,
- connection->recv_start_time - fast_dispatch_time);
- connection->lock.lock();
- } else {
- connection->dispatch_queue->enqueue(message, message->get_priority(),
- connection->conn_id);
- }
-
- // clean up local buffer references
- data_buf.clear();
- front.clear();
- middle.clear();
- data.clear();
-
- if (need_dispatch_writer && connection->is_connected()) {
- connection->center->dispatch_event_external(connection->write_handler);
- }
-
- return CONTINUE(wait_message);
-}
-
-void ProtocolV1::session_reset() {
- ldout(cct, 10) << __func__ << " started" << dendl;
-
- std::lock_guard<std::mutex> l(connection->write_lock);
- if (connection->delay_state) {
- connection->delay_state->discard();
- }
-
- connection->dispatch_queue->discard_queue(connection->conn_id);
- discard_out_queue();
- // note: we need to clear outcoming_bl here, but session_reset may be
- // called by other thread, so let caller clear this itself!
- // outcoming_bl.clear();
-
- connection->dispatch_queue->queue_remote_reset(connection);
-
- randomize_out_seq();
-
- in_seq = 0;
- connect_seq = 0;
- // it's safe to directly set 0, double locked
- ack_left = 0;
- once_ready = false;
- can_write = WriteStatus::NOWRITE;
-}
-
-void ProtocolV1::randomize_out_seq() {
- if (connection->get_features() & CEPH_FEATURE_MSG_AUTH) {
- // Set out_seq to a random value, so CRC won't be predictable.
- auto rand_seq = ceph::util::generate_random_number<uint64_t>(0, SEQ_MASK);
- ldout(cct, 10) << __func__ << " randomize_out_seq " << rand_seq << dendl;
- out_seq = rand_seq;
- } else {
- // previously, seq #'s always started at 0.
- out_seq = 0;
- }
-}
-
-ssize_t ProtocolV1::write_message(Message *m, bufferlist &bl, bool more) {
- FUNCTRACE(cct);
- ceph_assert(connection->center->in_thread());
- m->set_seq(++out_seq);
-
- if (messenger->crcflags & MSG_CRC_HEADER) {
- m->calc_header_crc();
- }
-
- ceph_msg_header &header = m->get_header();
- ceph_msg_footer &footer = m->get_footer();
-
- // TODO: let sign_message could be reentry?
- // Now that we have all the crcs calculated, handle the
- // digital signature for the message, if the AsyncConnection has session
- // security set up. Some session security options do not
- // actually calculate and check the signature, but they should
- // handle the calls to sign_message and check_signature. PLR
- if (session_security.get() == NULL) {
- ldout(cct, 20) << __func__ << " no session security" << dendl;
- } else {
- if (session_security->sign_message(m)) {
- ldout(cct, 20) << __func__ << " failed to sign m=" << m
- << "): sig = " << footer.sig << dendl;
- } else {
- ldout(cct, 20) << __func__ << " signed m=" << m
- << "): sig = " << footer.sig << dendl;
- }
- }
-
- connection->outcoming_bl.append(CEPH_MSGR_TAG_MSG);
- connection->outcoming_bl.append((char *)&header, sizeof(header));
-
- ldout(cct, 20) << __func__ << " sending message type=" << header.type
- << " src " << entity_name_t(header.src)
- << " front=" << header.front_len << " data=" << header.data_len
- << " off " << header.data_off << dendl;
-
- if ((bl.length() <= ASYNC_COALESCE_THRESHOLD) && (bl.buffers().size() > 1)) {
- for (const auto &pb : bl.buffers()) {
- connection->outcoming_bl.append((char *)pb.c_str(), pb.length());
- }
- } else {
- connection->outcoming_bl.claim_append(bl);
- }
-
- // send footer; if receiver doesn't support signatures, use the old footer
- // format
- ceph_msg_footer_old old_footer;
- if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
- connection->outcoming_bl.append((char *)&footer, sizeof(footer));
- } else {
- if (messenger->crcflags & MSG_CRC_HEADER) {
- old_footer.front_crc = footer.front_crc;
- old_footer.middle_crc = footer.middle_crc;
- old_footer.data_crc = footer.data_crc;
- } else {
- old_footer.front_crc = old_footer.middle_crc = 0;
- }
- old_footer.data_crc =
- messenger->crcflags & MSG_CRC_DATA ? footer.data_crc : 0;
- old_footer.flags = footer.flags;
- connection->outcoming_bl.append((char *)&old_footer, sizeof(old_footer));
- }
-
- m->trace.event("async writing message");
- ldout(cct, 20) << __func__ << " sending " << m->get_seq() << " " << m
- << dendl;
- ssize_t total_send_size = connection->outcoming_bl.length();
- ssize_t rc = connection->_try_send(more);
- if (rc < 0) {
- ldout(cct, 1) << __func__ << " error sending " << m << ", "
- << cpp_strerror(rc) << dendl;
- } else {
- connection->logger->inc(
- l_msgr_send_bytes, total_send_size - connection->outcoming_bl.length());
- ldout(cct, 10) << __func__ << " sending " << m
- << (rc ? " continuely." : " done.") << dendl;
- }
- if (m->get_type() == CEPH_MSG_OSD_OP)
- OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OP_END", false);
- else if (m->get_type() == CEPH_MSG_OSD_OPREPLY)
- OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OPREPLY_END", false);
- m->put();
-
- return rc;
-}
-
-void ProtocolV1::requeue_sent() {
- if (sent.empty()) {
- return;
- }
-
- list<pair<bufferlist, Message *> > &rq = out_q[CEPH_MSG_PRIO_HIGHEST];
- out_seq -= sent.size();
- while (!sent.empty()) {
- Message *m = sent.back();
- sent.pop_back();
- ldout(cct, 10) << __func__ << " " << *m << " for resend "
- << " (" << m->get_seq() << ")" << dendl;
- rq.push_front(make_pair(bufferlist(), m));
- }
-}
-
-uint64_t ProtocolV1::discard_requeued_up_to(uint64_t out_seq, uint64_t seq) {
- ldout(cct, 10) << __func__ << " " << seq << dendl;
- std::lock_guard<std::mutex> l(connection->write_lock);
- if (out_q.count(CEPH_MSG_PRIO_HIGHEST) == 0) {
- return seq;
- }
- list<pair<bufferlist, Message *> > &rq = out_q[CEPH_MSG_PRIO_HIGHEST];
- uint64_t count = out_seq;
- while (!rq.empty()) {
- pair<bufferlist, Message *> p = rq.front();
- if (p.second->get_seq() == 0 || p.second->get_seq() > seq) break;
- ldout(cct, 10) << __func__ << " " << *(p.second) << " for resend seq "
- << p.second->get_seq() << " <= " << seq << ", discarding"
- << dendl;
- p.second->put();
- rq.pop_front();
- count++;
- }
- if (rq.empty()) out_q.erase(CEPH_MSG_PRIO_HIGHEST);
- return count;
-}
-
-/*
- * Tears down the message queues, and removes them from the
- * DispatchQueue Must hold write_lock prior to calling.
- */
-void ProtocolV1::discard_out_queue() {
- ldout(cct, 10) << __func__ << " started" << dendl;
-
- for (list<Message *>::iterator p = sent.begin(); p != sent.end(); ++p) {
- ldout(cct, 20) << __func__ << " discard " << *p << dendl;
- (*p)->put();
- }
- sent.clear();
- for (map<int, list<pair<bufferlist, Message *> > >::iterator p =
- out_q.begin();
- p != out_q.end(); ++p) {
- for (list<pair<bufferlist, Message *> >::iterator r = p->second.begin();
- r != p->second.end(); ++r) {
- ldout(cct, 20) << __func__ << " discard " << r->second << dendl;
- r->second->put();
- }
- }
- out_q.clear();
-}
-
-void ProtocolV1::reset_recv_state() {
- // clean up state internal variables and states
- if (state == CONNECTING_SEND_CONNECT_MSG) {
- if (authorizer) {
- delete authorizer;
- }
- authorizer = nullptr;
- got_bad_auth = false;
- }
-
- // clean read and write callbacks
- connection->pendingReadLen.reset();
- connection->writeCallback.reset();
-
- if (state > THROTTLE_MESSAGE && state <= READ_FOOTER_AND_DISPATCH &&
- connection->policy.throttler_messages) {
- ldout(cct, 10) << __func__ << " releasing " << 1
- << " message to policy throttler "
- << connection->policy.throttler_messages->get_current()
- << "/" << connection->policy.throttler_messages->get_max()
- << dendl;
- connection->policy.throttler_messages->put();
- }
- if (state > THROTTLE_BYTES && state <= READ_FOOTER_AND_DISPATCH) {
- if (connection->policy.throttler_bytes) {
- ldout(cct, 10) << __func__ << " releasing " << cur_msg_size
- << " bytes to policy throttler "
- << connection->policy.throttler_bytes->get_current() << "/"
- << connection->policy.throttler_bytes->get_max() << dendl;
- connection->policy.throttler_bytes->put(cur_msg_size);
- }
- }
- if (state > THROTTLE_DISPATCH_QUEUE && state <= READ_FOOTER_AND_DISPATCH) {
- ldout(cct, 10)
- << __func__ << " releasing " << cur_msg_size
- << " bytes to dispatch_queue throttler "
- << connection->dispatch_queue->dispatch_throttler.get_current() << "/"
- << connection->dispatch_queue->dispatch_throttler.get_max() << dendl;
- connection->dispatch_queue->dispatch_throttle_release(cur_msg_size);
- }
-}
-
-Message *ProtocolV1::_get_next_outgoing(bufferlist *bl) {
- Message *m = 0;
- if (!out_q.empty()) {
- map<int, list<pair<bufferlist, Message *> > >::reverse_iterator it =
- out_q.rbegin();
- ceph_assert(!it->second.empty());
- list<pair<bufferlist, Message *> >::iterator p = it->second.begin();
- m = p->second;
- if (bl) bl->swap(p->first);
- it->second.erase(p);
- if (it->second.empty()) out_q.erase(it->first);
- }
- return m;
-}
-
-/**
- * Client Protocol V1
- **/
-
-CtPtr ProtocolV1::send_client_banner() {
- ldout(cct, 20) << __func__ << dendl;
- state = CONNECTING;
-
- bufferlist bl;
- bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
- return WRITE(bl, handle_client_banner_write);
-}
-
-CtPtr ProtocolV1::handle_client_banner_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " write client banner failed" << dendl;
- return _fault();
- }
- ldout(cct, 10) << __func__ << " connect write banner done: "
- << connection->get_peer_addr() << dendl;
-
- return wait_server_banner();
-}
-
-CtPtr ProtocolV1::wait_server_banner() {
- state = CONNECTING_WAIT_BANNER_AND_IDENTIFY;
-
- ldout(cct, 20) << __func__ << dendl;
-
- bufferlist myaddrbl;
- unsigned banner_len = strlen(CEPH_BANNER);
- unsigned need_len = banner_len + sizeof(ceph_entity_addr) * 2;
- return READ(need_len, handle_server_banner_and_identify);
-}
-
-CtPtr ProtocolV1::handle_server_banner_and_identify(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read banner and identify addresses failed"
- << dendl;
- return _fault();
- }
-
- unsigned banner_len = strlen(CEPH_BANNER);
- if (memcmp(buffer, CEPH_BANNER, banner_len)) {
- ldout(cct, 0) << __func__ << " connect protocol error (bad banner) on peer "
- << connection->get_peer_addr() << dendl;
- return _fault();
- }
-
- bufferlist bl;
- entity_addr_t paddr, peer_addr_for_me;
-
- bl.append(buffer + banner_len, sizeof(ceph_entity_addr) * 2);
- auto p = bl.cbegin();
- try {
- decode(paddr, p);
- decode(peer_addr_for_me, p);
- } catch (const buffer::error &e) {
- lderr(cct) << __func__ << " decode peer addr failed " << dendl;
- return _fault();
- }
- ldout(cct, 20) << __func__ << " connect read peer addr " << paddr
- << " on socket " << connection->cs.fd() << dendl;
-
- entity_addr_t peer_addr = connection->peer_addrs.legacy_addr();
- if (peer_addr != paddr) {
- if (paddr.is_blank_ip() && peer_addr.get_port() == paddr.get_port() &&
- peer_addr.get_nonce() == paddr.get_nonce()) {
- ldout(cct, 0) << __func__ << " connect claims to be " << paddr << " not "
- << peer_addr << " - presumably this is the same node!"
- << dendl;
- } else {
- ldout(cct, 10) << __func__ << " connect claims to be " << paddr << " not "
- << peer_addr << dendl;
- return _fault();
- }
- }
-
- ldout(cct, 20) << __func__ << " connect peer addr for me is "
- << peer_addr_for_me << dendl;
- connection->lock.unlock();
- messenger->learned_addr(peer_addr_for_me);
- if (cct->_conf->ms_inject_internal_delays &&
- cct->_conf->ms_inject_socket_failures) {
- if (rand() % cct->_conf->ms_inject_socket_failures == 0) {
- ldout(cct, 10) << __func__ << " sleep for "
- << cct->_conf->ms_inject_internal_delays << dendl;
- utime_t t;
- t.set_from_double(cct->_conf->ms_inject_internal_delays);
- t.sleep();
- }
- }
-
- connection->lock.lock();
- if (state != CONNECTING_WAIT_BANNER_AND_IDENTIFY) {
- ldout(cct, 1) << __func__
- << " state changed while learned_addr, mark_down or "
- << " replacing must be happened just now" << dendl;
- return nullptr;
- }
-
- bufferlist myaddrbl;
- encode(messenger->get_myaddrs().legacy_addr(), myaddrbl, 0); // legacy
- return WRITE(myaddrbl, handle_my_addr_write);
-}
-
-CtPtr ProtocolV1::handle_my_addr_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 2) << __func__ << " connect couldn't write my addr, "
- << cpp_strerror(r) << dendl;
- return _fault();
- }
- ldout(cct, 10) << __func__ << " connect sent my addr "
- << messenger->get_myaddrs().legacy_addr() << dendl;
-
- return CONTINUE(send_connect_message);
-}
-
-CtPtr ProtocolV1::send_connect_message() {
- state = CONNECTING_SEND_CONNECT_MSG;
-
- ldout(cct, 20) << __func__ << dendl;
-
- if (!authorizer) {
- authorizer = messenger->ms_deliver_get_authorizer(connection->peer_type,
- false);
- }
-
- ceph_msg_connect connect;
- connect.features = connection->policy.features_supported;
- connect.host_type = messenger->get_myname().type();
- connect.global_seq = global_seq;
- connect.connect_seq = connect_seq;
- connect.protocol_version =
- messenger->get_proto_version(connection->peer_type, true);
- connect.authorizer_protocol = authorizer ? authorizer->protocol : 0;
- connect.authorizer_len = authorizer ? authorizer->bl.length() : 0;
-
- if (authorizer) {
- ldout(cct, 10) << __func__
- << " connect_msg.authorizer_len=" << connect.authorizer_len
- << " protocol=" << connect.authorizer_protocol << dendl;
- }
-
- connect.flags = 0;
- if (connection->policy.lossy) {
- connect.flags |=
- CEPH_MSG_CONNECT_LOSSY; // this is fyi, actually, server decides!
- }
-
- bufferlist bl;
- bl.append((char *)&connect, sizeof(connect));
- if (authorizer) {
- bl.append(authorizer->bl.c_str(), authorizer->bl.length());
- }
-
- ldout(cct, 10) << __func__ << " connect sending gseq=" << global_seq
- << " cseq=" << connect_seq
- << " proto=" << connect.protocol_version << dendl;
-
- return WRITE(bl, handle_connect_message_write);
-}
-
-CtPtr ProtocolV1::handle_connect_message_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 2) << __func__ << " connect couldn't send reply "
- << cpp_strerror(r) << dendl;
- return _fault();
- }
-
- ldout(cct, 20) << __func__
- << " connect wrote (self +) cseq, waiting for reply" << dendl;
-
- return wait_connect_reply();
-}
-
-CtPtr ProtocolV1::wait_connect_reply() {
- ldout(cct, 20) << __func__ << dendl;
-
- memset(&connect_reply, 0, sizeof(connect_reply));
- return READ(sizeof(connect_reply), handle_connect_reply_1);
-}
-
-CtPtr ProtocolV1::handle_connect_reply_1(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read connect reply failed" << dendl;
- return _fault();
- }
-
- connect_reply = *((ceph_msg_connect_reply *)buffer);
-
- ldout(cct, 20) << __func__ << " connect got reply tag "
- << (int)connect_reply.tag << " connect_seq "
- << connect_reply.connect_seq << " global_seq "
- << connect_reply.global_seq << " proto "
- << connect_reply.protocol_version << " flags "
- << (int)connect_reply.flags << " features "
- << connect_reply.features << dendl;
-
- if (connect_reply.authorizer_len) {
- return wait_connect_reply_auth();
- }
-
- return handle_connect_reply_2();
-}
-
-CtPtr ProtocolV1::wait_connect_reply_auth() {
- ldout(cct, 20) << __func__ << dendl;
-
- ldout(cct, 10) << __func__
- << " reply.authorizer_len=" << connect_reply.authorizer_len
- << dendl;
-
- ceph_assert(connect_reply.authorizer_len < 4096);
-
- return READ(connect_reply.authorizer_len, handle_connect_reply_auth);
-}
-
-CtPtr ProtocolV1::handle_connect_reply_auth(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read connect reply authorizer failed"
- << dendl;
- return _fault();
- }
-
- bufferlist authorizer_reply;
- authorizer_reply.append(buffer, connect_reply.authorizer_len);
-
- if (connect_reply.tag == CEPH_MSGR_TAG_CHALLENGE_AUTHORIZER) {
- ldout(cct, 10) << __func__ << " connect got auth challenge" << dendl;
- authorizer->add_challenge(cct, authorizer_reply);
- return CONTINUE(send_connect_message);
- }
-
- auto iter = authorizer_reply.cbegin();
- if (authorizer && !authorizer->verify_reply(iter)) {
- ldout(cct, 0) << __func__ << " failed verifying authorize reply" << dendl;
- return _fault();
- }
-
- return handle_connect_reply_2();
-}
-
-CtPtr ProtocolV1::handle_connect_reply_2() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (connect_reply.tag == CEPH_MSGR_TAG_FEATURES) {
- ldout(cct, 0) << __func__ << " connect protocol feature mismatch, my "
- << std::hex << connection->policy.features_supported
- << " < peer " << connect_reply.features << " missing "
- << (connect_reply.features &
- ~connection->policy.features_supported)
- << std::dec << dendl;
- return _fault();
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_BADPROTOVER) {
- ldout(cct, 0) << __func__ << " connect protocol version mismatch, my "
- << messenger->get_proto_version(connection->peer_type, true)
- << " != " << connect_reply.protocol_version << dendl;
- return _fault();
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_BADAUTHORIZER) {
- ldout(cct, 0) << __func__ << " connect got BADAUTHORIZER" << dendl;
- if (got_bad_auth) {
- return _fault();
- }
- got_bad_auth = true;
- delete authorizer;
- authorizer = messenger->ms_deliver_get_authorizer(connection->peer_type,
- true); // try harder
- return CONTINUE(send_connect_message);
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_RESETSESSION) {
- ldout(cct, 0) << __func__ << " connect got RESETSESSION" << dendl;
- session_reset();
- connect_seq = 0;
-
- // see session_reset
- connection->outcoming_bl.clear();
-
- return CONTINUE(send_connect_message);
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_RETRY_GLOBAL) {
- global_seq = messenger->get_global_seq(connect_reply.global_seq);
- ldout(cct, 5) << __func__ << " connect got RETRY_GLOBAL "
- << connect_reply.global_seq << " chose new " << global_seq
- << dendl;
- return CONTINUE(send_connect_message);
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_RETRY_SESSION) {
- ceph_assert(connect_reply.connect_seq > connect_seq);
- ldout(cct, 5) << __func__ << " connect got RETRY_SESSION " << connect_seq
- << " -> " << connect_reply.connect_seq << dendl;
- connect_seq = connect_reply.connect_seq;
- return CONTINUE(send_connect_message);
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_WAIT) {
- ldout(cct, 1) << __func__ << " connect got WAIT (connection race)" << dendl;
- state = WAIT;
- return _fault();
- }
-
- uint64_t feat_missing;
- feat_missing =
- connection->policy.features_required & ~(uint64_t)connect_reply.features;
- if (feat_missing) {
- ldout(cct, 1) << __func__ << " missing required features " << std::hex
- << feat_missing << std::dec << dendl;
- return _fault();
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_SEQ) {
- ldout(cct, 10)
- << __func__
- << " got CEPH_MSGR_TAG_SEQ, reading acked_seq and writing in_seq"
- << dendl;
-
- return wait_ack_seq();
- }
-
- if (connect_reply.tag == CEPH_MSGR_TAG_READY) {
- ldout(cct, 10) << __func__ << " got CEPH_MSGR_TAG_READY " << dendl;
- }
-
- return client_ready();
-}
-
-CtPtr ProtocolV1::wait_ack_seq() {
- ldout(cct, 20) << __func__ << dendl;
-
- return READ(sizeof(uint64_t), handle_ack_seq);
-}
-
-CtPtr ProtocolV1::handle_ack_seq(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read connect ack seq failed" << dendl;
- return _fault();
- }
-
- uint64_t newly_acked_seq = 0;
-
- newly_acked_seq = *((uint64_t *)buffer);
- ldout(cct, 2) << __func__ << " got newly_acked_seq " << newly_acked_seq
- << " vs out_seq " << out_seq << dendl;
- out_seq = discard_requeued_up_to(out_seq, newly_acked_seq);
-
- bufferlist bl;
- uint64_t s = in_seq;
- bl.append((char *)&s, sizeof(s));
-
- return WRITE(bl, handle_in_seq_write);
-}
-
-CtPtr ProtocolV1::handle_in_seq_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 10) << __func__ << " failed to send in_seq " << dendl;
- return _fault();
- }
-
- ldout(cct, 10) << __func__ << " send in_seq done " << dendl;
-
- return client_ready();
-}
-
-CtPtr ProtocolV1::client_ready() {
- ldout(cct, 20) << __func__ << dendl;
-
- // hooray!
- peer_global_seq = connect_reply.global_seq;
- connection->policy.lossy = connect_reply.flags & CEPH_MSG_CONNECT_LOSSY;
-
- once_ready = true;
- connect_seq += 1;
- ceph_assert(connect_seq == connect_reply.connect_seq);
- backoff = utime_t();
- connection->set_features((uint64_t)connect_reply.features &
- (uint64_t)connection->policy.features_supported);
- ldout(cct, 10) << __func__ << " connect success " << connect_seq
- << ", lossy = " << connection->policy.lossy << ", features "
- << connection->get_features() << dendl;
-
- // If we have an authorizer, get a new AuthSessionHandler to deal with
- // ongoing security of the connection. PLR
- if (authorizer != NULL) {
- ldout(cct, 10) << __func__ << " setting up session_security with auth "
- << authorizer << dendl;
- session_security.reset(get_auth_session_handler(
- cct, authorizer->protocol, authorizer->session_key,
- connection->get_features()));
- } else {
- // We have no authorizer, so we shouldn't be applying security to messages
- // in this AsyncConnection. PLR
- ldout(cct, 10) << __func__ << " no authorizer, clearing session_security"
- << dendl;
- session_security.reset();
- }
-
- if (connection->delay_state) {
- ceph_assert(connection->delay_state->ready());
- }
- connection->dispatch_queue->queue_connect(connection);
- messenger->ms_deliver_handle_fast_connect(connection);
-
- return ready();
-}
-
-/**
- * Server Protocol V1
- **/
-
-CtPtr ProtocolV1::send_server_banner() {
- ldout(cct, 20) << __func__ << dendl;
- state = ACCEPTING;
-
- bufferlist bl;
-
- bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
-
- auto legacy = messenger->get_myaddrs().legacy_addr();
- encode(legacy, bl, 0); // legacy
- connection->port = legacy.get_port();
- encode(connection->target_addr, bl, 0); // legacy
-
- ldout(cct, 1) << __func__ << " sd=" << connection->cs.fd()
- << " legacy " << legacy
- << " socket_addr " << connection->socket_addr
- << " target_addr " << connection->target_addr
- << dendl;
-
- return WRITE(bl, handle_server_banner_write);
-}
-
-CtPtr ProtocolV1::handle_server_banner_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << " write server banner failed" << dendl;
- return _fault();
- }
- ldout(cct, 10) << __func__ << " write banner and addr done: "
- << connection->get_peer_addr() << dendl;
-
- return wait_client_banner();
-}
-
-CtPtr ProtocolV1::wait_client_banner() {
- ldout(cct, 20) << __func__ << dendl;
-
- return READ(strlen(CEPH_BANNER) + sizeof(ceph_entity_addr),
- handle_client_banner);
-}
-
-CtPtr ProtocolV1::handle_client_banner(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read peer banner and addr failed" << dendl;
- return _fault();
- }
-
- if (memcmp(buffer, CEPH_BANNER, strlen(CEPH_BANNER))) {
- ldout(cct, 1) << __func__ << " accept peer sent bad banner '" << buffer
- << "' (should be '" << CEPH_BANNER << "')" << dendl;
- return _fault();
- }
-
- bufferlist addr_bl;
- entity_addr_t peer_addr;
-
- addr_bl.append(buffer + strlen(CEPH_BANNER), sizeof(ceph_entity_addr));
- try {
- auto ti = addr_bl.cbegin();
- decode(peer_addr, ti);
- } catch (const buffer::error &e) {
- lderr(cct) << __func__ << " decode peer_addr failed " << dendl;
- return _fault();
- }
-
- ldout(cct, 10) << __func__ << " accept peer addr is " << peer_addr << dendl;
- if (peer_addr.is_blank_ip()) {
- // peer apparently doesn't know what ip they have; figure it out for them.
- int port = peer_addr.get_port();
- peer_addr.u = connection->target_addr.u;
- peer_addr.set_port(port);
-
- ldout(cct, 0) << __func__ << " accept peer addr is really " << peer_addr
- << " (socket is " << connection->socket_addr << ")" << dendl;
- }
- connection->set_peer_addr(peer_addr); // so that connection_state gets set up
- connection->target_addr = peer_addr;
-
- return CONTINUE(wait_connect_message);
-}
-
-CtPtr ProtocolV1::wait_connect_message() {
- ldout(cct, 20) << __func__ << dendl;
-
- memset(&connect_msg, 0, sizeof(connect_msg));
- return READ(sizeof(connect_msg), handle_connect_message_1);
-}
-
-CtPtr ProtocolV1::handle_connect_message_1(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read connect msg failed" << dendl;
- return _fault();
- }
-
- connect_msg = *((ceph_msg_connect *)buffer);
-
- state = ACCEPTING_WAIT_CONNECT_MSG_AUTH;
-
- if (connect_msg.authorizer_len) {
- return wait_connect_message_auth();
- }
-
- return handle_connect_message_2();
-}
-
-CtPtr ProtocolV1::wait_connect_message_auth() {
- ldout(cct, 20) << __func__ << dendl;
-
- if (!authorizer_buf.length()) {
- authorizer_buf.push_back(buffer::create(connect_msg.authorizer_len));
- }
- return READB(connect_msg.authorizer_len, authorizer_buf.c_str(),
- handle_connect_message_auth);
-}
-
-CtPtr ProtocolV1::handle_connect_message_auth(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read connect authorizer failed" << dendl;
- return _fault();
- }
-
- return handle_connect_message_2();
-}
-
-CtPtr ProtocolV1::handle_connect_message_2() {
- ldout(cct, 20) << __func__ << dendl;
-
- ldout(cct, 20) << __func__ << " accept got peer connect_seq "
- << connect_msg.connect_seq << " global_seq "
- << connect_msg.global_seq << dendl;
-
- connection->set_peer_type(connect_msg.host_type);
- connection->policy = messenger->get_policy(connect_msg.host_type);
-
- ldout(cct, 10) << __func__ << " accept of host_type " << connect_msg.host_type
- << ", policy.lossy=" << connection->policy.lossy
- << " policy.server=" << connection->policy.server
- << " policy.standby=" << connection->policy.standby
- << " policy.resetcheck=" << connection->policy.resetcheck
- << dendl;
-
- ceph_msg_connect_reply reply;
- bufferlist authorizer_reply;
-
- memset(&reply, 0, sizeof(reply));
- reply.protocol_version =
- messenger->get_proto_version(connection->peer_type, false);
-
- // mismatch?
- ldout(cct, 10) << __func__ << " accept my proto " << reply.protocol_version
- << ", their proto " << connect_msg.protocol_version << dendl;
-
- if (connect_msg.protocol_version != reply.protocol_version) {
- return send_connect_message_reply(CEPH_MSGR_TAG_BADPROTOVER, reply,
- authorizer_reply);
- }
-
- // require signatures for cephx?
- if (connect_msg.authorizer_protocol == CEPH_AUTH_CEPHX) {
- if (connection->peer_type == CEPH_ENTITY_TYPE_OSD ||
- connection->peer_type == CEPH_ENTITY_TYPE_MDS) {
- if (cct->_conf->cephx_require_signatures ||
- cct->_conf->cephx_cluster_require_signatures) {
- ldout(cct, 10)
- << __func__
- << " using cephx, requiring MSG_AUTH feature bit for cluster"
- << dendl;
- connection->policy.features_required |= CEPH_FEATURE_MSG_AUTH;
- }
- } else {
- if (cct->_conf->cephx_require_signatures ||
- cct->_conf->cephx_service_require_signatures) {
- ldout(cct, 10)
- << __func__
- << " using cephx, requiring MSG_AUTH feature bit for service"
- << dendl;
- connection->policy.features_required |= CEPH_FEATURE_MSG_AUTH;
- }
- }
- }
-
- uint64_t feat_missing =
- connection->policy.features_required & ~(uint64_t)connect_msg.features;
- if (feat_missing) {
- ldout(cct, 1) << __func__ << " peer missing required features " << std::hex
- << feat_missing << std::dec << dendl;
- return send_connect_message_reply(CEPH_MSGR_TAG_FEATURES, reply,
- authorizer_reply);
- }
-
- connection->lock.unlock();
- ldout(cct,10) << __func__ << " authorizor_protocol "
- << connect_msg.authorizer_protocol
- << " len " << authorizer_buf.length()
- << dendl;
- bool authorizer_valid;
- bool need_challenge = HAVE_FEATURE(connect_msg.features, CEPHX_V2);
- bool had_challenge = (bool)authorizer_challenge;
- if (!messenger->ms_deliver_verify_authorizer(
- connection, connection->peer_type, connect_msg.authorizer_protocol,
- authorizer_buf, authorizer_reply, authorizer_valid, session_key,
- need_challenge ? &authorizer_challenge : nullptr) ||
- !authorizer_valid) {
- connection->lock.lock();
-
- if (need_challenge && !had_challenge && authorizer_challenge) {
- ldout(cct, 10) << __func__ << ": challenging authorizer" << dendl;
- ceph_assert(authorizer_reply.length());
- return send_connect_message_reply(CEPH_MSGR_TAG_CHALLENGE_AUTHORIZER,
- reply, authorizer_reply);
- } else {
- ldout(cct, 0) << __func__ << ": got bad authorizer, auth_reply_len="
- << authorizer_reply.length() << dendl;
- session_security.reset();
- return send_connect_message_reply(CEPH_MSGR_TAG_BADAUTHORIZER, reply,
- authorizer_reply);
- }
- }
-
- // We've verified the authorizer for this AsyncConnection, so set up the
- // session security structure. PLR
- ldout(cct, 10) << __func__ << " accept setting up session_security." << dendl;
-
- // existing?
- AsyncConnectionRef existing = messenger->lookup_conn(connection->peer_addrs);
-
- connection->inject_delay();
-
- connection->lock.lock();
- if (state != ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
- ldout(cct, 1) << __func__
- << " state changed while accept, it must be mark_down"
- << dendl;
- ceph_assert(state == CLOSED);
- return _fault();
- }
-
- if (existing == connection) {
- existing = nullptr;
- }
-
- if (existing) {
- // There is no possible that existing connection will acquire this
- // connection's lock
- existing->lock.lock(); // skip lockdep check (we are locking a second
- // AsyncConnection here)
-
- ProtocolV1 *exproto = dynamic_cast<ProtocolV1 *>(existing->protocol.get());
-
- if (!exproto) {
- ldout(cct, 1) << __func__ << " existing=" << existing << dendl;
- ceph_assert(false);
- }
-
- if (exproto->state == CLOSED) {
- ldout(cct, 1) << __func__ << " existing " << existing
- << " already closed." << dendl;
- existing->lock.unlock();
- existing = nullptr;
-
- return open(reply, authorizer_reply);
- }
-
- if (exproto->replacing) {
- ldout(cct, 1) << __func__
- << " existing racing replace happened while replacing."
- << " existing_state="
- << connection->get_state_name(existing->state) << dendl;
- reply.global_seq = exproto->peer_global_seq;
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_GLOBAL, reply,
- authorizer_reply);
- }
-
- if (connect_msg.global_seq < exproto->peer_global_seq) {
- ldout(cct, 10) << __func__ << " accept existing " << existing << ".gseq "
- << exproto->peer_global_seq << " > "
- << connect_msg.global_seq << ", RETRY_GLOBAL" << dendl;
- reply.global_seq = exproto->peer_global_seq; // so we can send it below..
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_GLOBAL, reply,
- authorizer_reply);
- } else {
- ldout(cct, 10) << __func__ << " accept existing " << existing << ".gseq "
- << exproto->peer_global_seq
- << " <= " << connect_msg.global_seq << ", looks ok"
- << dendl;
- }
-
- if (existing->policy.lossy) {
- ldout(cct, 0)
- << __func__
- << " accept replacing existing (lossy) channel (new one lossy="
- << connection->policy.lossy << ")" << dendl;
- exproto->session_reset();
- return replace(existing, reply, authorizer_reply);
- }
-
- ldout(cct, 1) << __func__ << " accept connect_seq "
- << connect_msg.connect_seq
- << " vs existing csq=" << exproto->connect_seq
- << " existing_state="
- << connection->get_state_name(existing->state) << dendl;
-
- if (connect_msg.connect_seq == 0 && exproto->connect_seq > 0) {
- ldout(cct, 0)
- << __func__
- << " accept peer reset, then tried to connect to us, replacing"
- << dendl;
- // this is a hard reset from peer
- is_reset_from_peer = true;
- if (connection->policy.resetcheck) {
- exproto->session_reset(); // this resets out_queue, msg_ and
- // connect_seq #'s
- }
- return replace(existing, reply, authorizer_reply);
- }
-
- if (connect_msg.connect_seq < exproto->connect_seq) {
- // old attempt, or we sent READY but they didn't get it.
- ldout(cct, 10) << __func__ << " accept existing " << existing << ".cseq "
- << exproto->connect_seq << " > " << connect_msg.connect_seq
- << ", RETRY_SESSION" << dendl;
- reply.connect_seq = exproto->connect_seq + 1;
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_SESSION, reply,
- authorizer_reply);
- }
-
- if (connect_msg.connect_seq == exproto->connect_seq) {
- // if the existing connection successfully opened, and/or
- // subsequently went to standby, then the peer should bump
- // their connect_seq and retry: this is not a connection race
- // we need to resolve here.
- if (exproto->state == OPENED || exproto->state == STANDBY) {
- ldout(cct, 10) << __func__ << " accept connection race, existing "
- << existing << ".cseq " << exproto->connect_seq
- << " == " << connect_msg.connect_seq
- << ", OPEN|STANDBY, RETRY_SESSION " << dendl;
- // if connect_seq both zero, dont stuck into dead lock. it's ok to
- // replace
- if (connection->policy.resetcheck && exproto->connect_seq == 0) {
- return replace(existing, reply, authorizer_reply);
- }
-
- reply.connect_seq = exproto->connect_seq + 1;
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_SESSION, reply,
- authorizer_reply);
- }
-
- // connection race?
- if (connection->peer_addrs.legacy_addr() < messenger->get_myaddr() ||
- existing->policy.server) {
- // incoming wins
- ldout(cct, 10) << __func__ << " accept connection race, existing "
- << existing << ".cseq " << exproto->connect_seq
- << " == " << connect_msg.connect_seq
- << ", or we are server, replacing my attempt" << dendl;
- return replace(existing, reply, authorizer_reply);
- } else {
- // our existing outgoing wins
- ldout(messenger->cct, 10)
- << __func__ << " accept connection race, existing " << existing
- << ".cseq " << exproto->connect_seq
- << " == " << connect_msg.connect_seq << ", sending WAIT" << dendl;
- ceph_assert(connection->peer_addrs.legacy_addr() >
- messenger->get_myaddr());
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_WAIT, reply,
- authorizer_reply);
- }
- }
-
- ceph_assert(connect_msg.connect_seq > exproto->connect_seq);
- ceph_assert(connect_msg.global_seq >= exproto->peer_global_seq);
- if (connection->policy.resetcheck && // RESETSESSION only used by servers;
- // peers do not reset each other
- exproto->connect_seq == 0) {
- ldout(cct, 0) << __func__ << " accept we reset (peer sent cseq "
- << connect_msg.connect_seq << ", " << existing
- << ".cseq = " << exproto->connect_seq
- << "), sending RESETSESSION " << dendl;
- existing->lock.unlock();
- return send_connect_message_reply(CEPH_MSGR_TAG_RESETSESSION, reply,
- authorizer_reply);
- }
-
- // reconnect
- ldout(cct, 10) << __func__ << " accept peer sent cseq "
- << connect_msg.connect_seq << " > " << exproto->connect_seq
- << dendl;
- return replace(existing, reply, authorizer_reply);
- } // existing
- else if (!replacing && connect_msg.connect_seq > 0) {
- // we reset, and they are opening a new session
- ldout(cct, 0) << __func__ << " accept we reset (peer sent cseq "
- << connect_msg.connect_seq << "), sending RESETSESSION"
- << dendl;
- return send_connect_message_reply(CEPH_MSGR_TAG_RESETSESSION, reply,
- authorizer_reply);
- } else {
- // new session
- ldout(cct, 10) << __func__ << " accept new session" << dendl;
- existing = nullptr;
- return open(reply, authorizer_reply);
- }
-}
-
-CtPtr ProtocolV1::send_connect_message_reply(char tag,
- ceph_msg_connect_reply &reply,
- bufferlist &authorizer_reply) {
- ldout(cct, 20) << __func__ << dendl;
- bufferlist reply_bl;
- reply.tag = tag;
- reply.features =
- ((uint64_t)connect_msg.features & connection->policy.features_supported) |
- connection->policy.features_required;
- reply.authorizer_len = authorizer_reply.length();
- reply_bl.append((char *)&reply, sizeof(reply));
-
- if (reply.authorizer_len) {
- reply_bl.append(authorizer_reply.c_str(), authorizer_reply.length());
- authorizer_reply.clear();
- }
-
- return WRITE(reply_bl, handle_connect_message_reply_write);
-}
-
-CtPtr ProtocolV1::handle_connect_message_reply_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << " write connect message reply failed" << dendl;
- connection->inject_delay();
- return _fault();
- }
-
- return CONTINUE(wait_connect_message);
-}
-
-CtPtr ProtocolV1::replace(AsyncConnectionRef existing,
- ceph_msg_connect_reply &reply,
- bufferlist &authorizer_reply) {
- ldout(cct, 10) << __func__ << " accept replacing " << existing << dendl;
-
- connection->inject_delay();
- if (existing->policy.lossy) {
- // disconnect from the Connection
- ldout(cct, 1) << __func__ << " replacing on lossy channel, failing existing"
- << dendl;
- existing->protocol->stop();
- existing->dispatch_queue->queue_reset(existing.get());
- } else {
- ceph_assert(can_write == WriteStatus::NOWRITE);
- existing->write_lock.lock();
-
- ProtocolV1 *exproto = dynamic_cast<ProtocolV1 *>(existing->protocol.get());
-
- // reset the in_seq if this is a hard reset from peer,
- // otherwise we respect our original connection's value
- if (is_reset_from_peer) {
- exproto->is_reset_from_peer = true;
- }
-
- connection->center->delete_file_event(connection->cs.fd(),
- EVENT_READABLE | EVENT_WRITABLE);
-
- if (existing->delay_state) {
- existing->delay_state->flush();
- ceph_assert(!connection->delay_state);
- }
- exproto->reset_recv_state();
-
- auto temp_cs = std::move(connection->cs);
- EventCenter *new_center = connection->center;
- Worker *new_worker = connection->worker;
- // avoid _stop shutdown replacing socket
- // queue a reset on the new connection, which we're dumping for the old
- stop();
-
- connection->dispatch_queue->queue_reset(connection);
- ldout(messenger->cct, 1)
- << __func__ << " stop myself to swap existing" << dendl;
- exproto->can_write = WriteStatus::REPLACING;
- exproto->replacing = true;
- existing->state_offset = 0;
- // avoid previous thread modify event
- exproto->state = NONE;
- existing->state = AsyncConnection::STATE_NONE;
- // Discard existing prefetch buffer in `recv_buf`
- existing->recv_start = existing->recv_end = 0;
- // there shouldn't exist any buffer
- ceph_assert(connection->recv_start == connection->recv_end);
-
- exproto->authorizer_challenge.reset();
-
- auto deactivate_existing = std::bind(
- [existing, new_worker, new_center, exproto, reply,
- authorizer_reply](ConnectedSocket &cs) mutable {
- // we need to delete time event in original thread
- {
- std::lock_guard<std::mutex> l(existing->lock);
- existing->write_lock.lock();
- exproto->requeue_sent();
- existing->outcoming_bl.clear();
- existing->open_write = false;
- existing->write_lock.unlock();
- if (exproto->state == NONE) {
- existing->shutdown_socket();
- existing->cs = std::move(cs);
- existing->worker->references--;
- new_worker->references++;
- existing->logger = new_worker->get_perf_counter();
- existing->worker = new_worker;
- existing->center = new_center;
- if (existing->delay_state)
- existing->delay_state->set_center(new_center);
- } else if (exproto->state == CLOSED) {
- auto back_to_close =
- std::bind([](ConnectedSocket &cs) mutable { cs.close(); },
- std::move(cs));
- new_center->submit_to(new_center->get_id(),
- std::move(back_to_close), true);
- return;
- } else {
- ceph_abort();
- }
- }
-
- // Before changing existing->center, it may already exists some
- // events in existing->center's queue. Then if we mark down
- // `existing`, it will execute in another thread and clean up
- // connection. Previous event will result in segment fault
- auto transfer_existing = [existing, exproto, reply,
- authorizer_reply]() mutable {
- std::lock_guard<std::mutex> l(existing->lock);
- if (exproto->state == CLOSED) return;
- ceph_assert(exproto->state == NONE);
-
- existing->state = AsyncConnection::STATE_CONNECTION_ESTABLISHED;
- exproto->state = ACCEPTING;
-
- existing->center->create_file_event(
- existing->cs.fd(), EVENT_READABLE, existing->read_handler);
- reply.global_seq = exproto->peer_global_seq;
- exproto->run_continuation(exproto->send_connect_message_reply(
- CEPH_MSGR_TAG_RETRY_GLOBAL, reply, authorizer_reply));
- };
- if (existing->center->in_thread())
- transfer_existing();
- else
- existing->center->submit_to(existing->center->get_id(),
- std::move(transfer_existing), true);
- },
- std::move(temp_cs));
-
- existing->center->submit_to(existing->center->get_id(),
- std::move(deactivate_existing), true);
- existing->write_lock.unlock();
- existing->lock.unlock();
- return nullptr;
- }
- existing->lock.unlock();
-
- return open(reply, authorizer_reply);
-}
-
-CtPtr ProtocolV1::open(ceph_msg_connect_reply &reply,
- bufferlist &authorizer_reply) {
- ldout(cct, 20) << __func__ << dendl;
-
- connect_seq = connect_msg.connect_seq + 1;
- peer_global_seq = connect_msg.global_seq;
- ldout(cct, 10) << __func__ << " accept success, connect_seq = " << connect_seq
- << " in_seq=" << in_seq << ", sending READY" << dendl;
-
- // if it is a hard reset from peer, we don't need a round-trip to negotiate
- // in/out sequence
- if ((connect_msg.features & CEPH_FEATURE_RECONNECT_SEQ) &&
- !is_reset_from_peer) {
- reply.tag = CEPH_MSGR_TAG_SEQ;
- wait_for_seq = true;
- } else {
- reply.tag = CEPH_MSGR_TAG_READY;
- wait_for_seq = false;
- out_seq = discard_requeued_up_to(out_seq, 0);
- is_reset_from_peer = false;
- in_seq = 0;
- }
-
- // send READY reply
- reply.features = connection->policy.features_supported;
- reply.global_seq = messenger->get_global_seq();
- reply.connect_seq = connect_seq;
- reply.flags = 0;
- reply.authorizer_len = authorizer_reply.length();
- if (connection->policy.lossy) {
- reply.flags = reply.flags | CEPH_MSG_CONNECT_LOSSY;
- }
-
- connection->set_features((uint64_t)reply.features &
- (uint64_t)connect_msg.features);
- ldout(cct, 10) << __func__ << " accept features "
- << connection->get_features()
- << " authorizer_protocol "
- << connect_msg.authorizer_protocol << dendl;
-
- session_security.reset(
- get_auth_session_handler(cct, connect_msg.authorizer_protocol,
- session_key, connection->get_features()));
-
- bufferlist reply_bl;
- reply_bl.append((char *)&reply, sizeof(reply));
-
- if (reply.authorizer_len) {
- reply_bl.append(authorizer_reply.c_str(), authorizer_reply.length());
- }
-
- if (reply.tag == CEPH_MSGR_TAG_SEQ) {
- uint64_t s = in_seq;
- reply_bl.append((char *)&s, sizeof(s));
- }
-
- connection->lock.unlock();
- // Because "replacing" will prevent other connections preempt this addr,
- // it's safe that here we don't acquire Connection's lock
- ssize_t r = messenger->accept_conn(connection);
-
- connection->inject_delay();
-
- connection->lock.lock();
- replacing = false;
- if (r < 0) {
- ldout(cct, 1) << __func__ << " existing race replacing process for addr = "
- << connection->peer_addrs.legacy_addr()
- << " just fail later one(this)" << dendl;
- ldout(cct, 10) << "accept fault after register" << dendl;
- connection->inject_delay();
- return _fault();
- }
- if (state != ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
- ldout(cct, 1) << __func__
- << " state changed while accept_conn, it must be mark_down"
- << dendl;
- ceph_assert(state == CLOSED || state == NONE);
- ldout(cct, 10) << "accept fault after register" << dendl;
- connection->inject_delay();
- return _fault();
- }
-
- return WRITE(reply_bl, handle_ready_connect_message_reply_write);
-}
-
-CtPtr ProtocolV1::handle_ready_connect_message_reply_write(int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " write ready connect message reply failed"
- << dendl;
- return _fault();
- }
-
- // notify
- connection->dispatch_queue->queue_accept(connection);
- messenger->ms_deliver_handle_fast_accept(connection);
- once_ready = true;
-
- state = ACCEPTING_HANDLED_CONNECT_MSG;
-
- if (wait_for_seq) {
- return wait_seq();
- }
-
- return server_ready();
-}
-
-CtPtr ProtocolV1::wait_seq() {
- ldout(cct, 20) << __func__ << dendl;
-
- return READ(sizeof(uint64_t), handle_seq);
-}
-
-CtPtr ProtocolV1::handle_seq(char *buffer, int r) {
- ldout(cct, 20) << __func__ << " r=" << r << dendl;
-
- if (r < 0) {
- ldout(cct, 1) << __func__ << " read ack seq failed" << dendl;
- return _fault();
- }
-
- uint64_t newly_acked_seq = *(uint64_t *)buffer;
- ldout(cct, 2) << __func__ << " accept get newly_acked_seq " << newly_acked_seq
- << dendl;
- out_seq = discard_requeued_up_to(out_seq, newly_acked_seq);
-
- return server_ready();
-}
-
-CtPtr ProtocolV1::server_ready() {
- ldout(cct, 20) << __func__ << " session_security is "
- << session_security
- << dendl;
-
- ldout(cct, 20) << __func__ << " accept done" << dendl;
- memset(&connect_msg, 0, sizeof(connect_msg));
-
- if (connection->delay_state) {
- ceph_assert(connection->delay_state->ready());
- }
-
- return ready();
-}
} \
}
+#define READ_HANDLER_CONTINUATION_DECL(C, F) CONTINUATION_DECL(C, F, char*, int)
+#define WRITE_HANDLER_CONTINUATION_DECL(C, F) CONTINUATION_DECL(C, F, int)
+
//////////////////////////////////////////////////////////////////////
class AsyncMessenger;
virtual bool is_queued() = 0;
};
-class ProtocolV1;
-using CtPtr = Ct<ProtocolV1>*;
-#define READ_HANDLER_CONTINUATION_DECL(C, F) CONTINUATION_DECL(C, F, char*, int)
-#define WRITE_HANDLER_CONTINUATION_DECL(C, F) CONTINUATION_DECL(C, F, int)
-
-class ProtocolV1 : public Protocol {
-/*
- * ProtocolV1 State Machine
- *
-
- send_server_banner send_client_banner
- | |
- v v
- wait_client_banner wait_server_banner
- | |
- | v
- v handle_server_banner_and_identify
- wait_connect_message <---------\ |
- | | | v
- | wait_connect_message_auth | send_connect_message <----------\
- | | | | |
- v v | | |
-handle_connect_message_2 | v |
- | | | wait_connect_reply |
- v v | | | |
- replace -> send_connect_message_reply | V |
- | | wait_connect_reply_auth |
- | | | |
- v v v |
- open ---\ handle_connect_reply_2 --------/
- | | |
- | v v
- | wait_seq wait_ack_seq
- | | |
- v v v
- server_ready client_ready
- | |
- \------------------> wait_message <------------/
- | ^ | ^
- /------------------------/ | | |
- | | | \----------------- ------------\
- v /----------/ v |
-handle_keepalive2 | handle_message_header read_message_footer
-handle_keepalive2_ack | | ^
-handle_tag_ack | v |
- | | throttle_message read_message_data
- \----------------/ | ^
- v |
- read_message_front --> read_message_middle --/
-*/
-
-protected:
-
- enum State {
- NONE = 0,
- START_CONNECT,
- CONNECTING,
- CONNECTING_WAIT_BANNER_AND_IDENTIFY,
- CONNECTING_SEND_CONNECT_MSG,
- START_ACCEPT,
- ACCEPTING,
- ACCEPTING_WAIT_CONNECT_MSG_AUTH,
- ACCEPTING_HANDLED_CONNECT_MSG,
- OPENED,
- THROTTLE_MESSAGE,
- THROTTLE_BYTES,
- THROTTLE_DISPATCH_QUEUE,
- READ_MESSAGE_FRONT,
- READ_FOOTER_AND_DISPATCH,
- CLOSED,
- WAIT,
- STANDBY
- };
-
- static const char *get_state_name(int state) {
- const char *const statenames[] = {"NONE",
- "START_CONNECT",
- "CONNECTING",
- "CONNECTING_WAIT_BANNER_AND_IDENTIFY",
- "CONNECTING_SEND_CONNECT_MSG",
- "START_ACCEPT",
- "ACCEPTING",
- "ACCEPTING_WAIT_CONNECT_MSG_AUTH",
- "ACCEPTING_HANDLED_CONNECT_MSG",
- "OPENED",
- "THROTTLE_MESSAGE",
- "THROTTLE_BYTES",
- "THROTTLE_DISPATCH_QUEUE",
- "READ_MESSAGE_FRONT",
- "READ_FOOTER_AND_DISPATCH",
- "CLOSED",
- "WAIT",
- "STANDBY"};
- return statenames[state];
- }
-
- char *temp_buffer;
-
- enum class WriteStatus { NOWRITE, REPLACING, CANWRITE, CLOSED };
- std::atomic<WriteStatus> can_write;
- std::list<Message *> sent; // the first bufferlist need to inject seq
- // priority queue for outbound msgs
- std::map<int, std::list<std::pair<bufferlist, Message *>>> out_q;
- bool keepalive;
-
- __u32 connect_seq, peer_global_seq;
- std::atomic<uint64_t> in_seq{0};
- std::atomic<uint64_t> out_seq{0};
- std::atomic<uint64_t> ack_left{0};
-
- CryptoKey session_key;
- std::shared_ptr<AuthSessionHandler> session_security;
- std::unique_ptr<AuthAuthorizerChallenge> authorizer_challenge; // accept side
-
- // Open state
- ceph_msg_connect connect_msg;
- ceph_msg_connect_reply connect_reply;
- bufferlist authorizer_buf;
-
- utime_t backoff; // backoff time
- utime_t recv_stamp;
- utime_t throttle_stamp;
- unsigned msg_left;
- uint64_t cur_msg_size;
- ceph_msg_header current_header;
- bufferlist data_buf;
- bufferlist::iterator data_blp;
- bufferlist front, middle, data;
-
- bool replacing; // when replacing process happened, we will reply connect
- // side with RETRY tag and accept side will clear replaced
- // connection. So when connect side reissue connect_msg,
- // there won't exists conflicting connection so we use
- // "replacing" to skip RESETSESSION to avoid detect wrong
- // presentation
- bool is_reset_from_peer;
- bool once_ready;
-
- State state;
-
- void run_continuation(CtPtr continuation);
- CtPtr read(CONTINUATION_PARAM(next, ProtocolV1, char *, int), int len,
- char *buffer = nullptr);
- CtPtr write(CONTINUATION_PARAM(next, ProtocolV1, int), bufferlist &bl);
- inline CtPtr _fault() { // helper fault method that stops continuation
- fault();
- return nullptr;
- }
-
- CONTINUATION_DECL(ProtocolV1, wait_message);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_keepalive2);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_keepalive2_ack);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_tag_ack);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_header);
- CONTINUATION_DECL(ProtocolV1, throttle_message);
- CONTINUATION_DECL(ProtocolV1, throttle_bytes);
- CONTINUATION_DECL(ProtocolV1, throttle_dispatch_queue);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_front);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_middle);
- CONTINUATION_DECL(ProtocolV1, read_message_data);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_data);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_footer);
-
- CtPtr ready();
- CtPtr wait_message();
- CtPtr handle_message(char *buffer, int r);
-
- CtPtr handle_keepalive2(char *buffer, int r);
- void append_keepalive_or_ack(bool ack = false, utime_t *t = nullptr);
- CtPtr handle_keepalive2_ack(char *buffer, int r);
- CtPtr handle_tag_ack(char *buffer, int r);
-
- CtPtr handle_message_header(char *buffer, int r);
- CtPtr throttle_message();
- CtPtr throttle_bytes();
- CtPtr throttle_dispatch_queue();
- CtPtr read_message_front();
- CtPtr handle_message_front(char *buffer, int r);
- CtPtr read_message_middle();
- CtPtr handle_message_middle(char *buffer, int r);
- CtPtr read_message_data_prepare();
- CtPtr read_message_data();
- CtPtr handle_message_data(char *buffer, int r);
- CtPtr read_message_footer();
- CtPtr handle_message_footer(char *buffer, int r);
-
- void session_reset();
- void randomize_out_seq();
-
- Message *_get_next_outgoing(bufferlist *bl);
-
- void prepare_send_message(uint64_t features, Message *m, bufferlist &bl);
- ssize_t write_message(Message *m, bufferlist &bl, bool more);
-
- void requeue_sent();
- uint64_t discard_requeued_up_to(uint64_t out_seq, uint64_t seq);
- void discard_out_queue();
-
- void reset_recv_state();
-
- ostream &_conn_prefix(std::ostream *_dout);
-
-public:
- ProtocolV1(AsyncConnection *connection);
- virtual ~ProtocolV1();
-
- virtual void connect() override;
- virtual void accept() override;
- virtual bool is_connected() override;
- virtual void stop() override;
- virtual void fault() override;
- virtual void send_message(Message *m) override;
- virtual void send_keepalive() override;
-
- virtual void read_event() override;
- virtual void write_event() override;
- virtual bool is_queued() override;
-
- // Client Protocol
-private:
- int global_seq;
- bool got_bad_auth;
- AuthAuthorizer *authorizer;
-
- CONTINUATION_DECL(ProtocolV1, send_client_banner);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_client_banner_write);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_server_banner_and_identify);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_my_addr_write);
- CONTINUATION_DECL(ProtocolV1, send_connect_message);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_write);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_reply_1);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_reply_auth);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_ack_seq);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_in_seq_write);
-
- CtPtr send_client_banner();
- CtPtr handle_client_banner_write(int r);
- CtPtr wait_server_banner();
- CtPtr handle_server_banner_and_identify(char *buffer, int r);
- CtPtr handle_my_addr_write(int r);
- CtPtr send_connect_message();
- CtPtr handle_connect_message_write(int r);
- CtPtr wait_connect_reply();
- CtPtr handle_connect_reply_1(char *buffer, int r);
- CtPtr wait_connect_reply_auth();
- CtPtr handle_connect_reply_auth(char *buffer, int r);
- CtPtr handle_connect_reply_2();
- CtPtr wait_ack_seq();
- CtPtr handle_ack_seq(char *buffer, int r);
- CtPtr handle_in_seq_write(int r);
- CtPtr client_ready();
-
- // Server Protocol
-protected:
- bool wait_for_seq;
-
- CONTINUATION_DECL(ProtocolV1, send_server_banner);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_server_banner_write);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_client_banner);
- CONTINUATION_DECL(ProtocolV1, wait_connect_message);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_1);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_auth);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1,
- handle_connect_message_reply_write);
- WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1,
- handle_ready_connect_message_reply_write);
- READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_seq);
-
- CtPtr send_server_banner();
- CtPtr handle_server_banner_write(int r);
- CtPtr wait_client_banner();
- CtPtr handle_client_banner(char *buffer, int r);
- CtPtr wait_connect_message();
- CtPtr handle_connect_message_1(char *buffer, int r);
- CtPtr wait_connect_message_auth();
- CtPtr handle_connect_message_auth(char *buffer, int r);
- CtPtr handle_connect_message_2();
- CtPtr send_connect_message_reply(char tag, ceph_msg_connect_reply &reply,
- bufferlist &authorizer_reply);
- CtPtr handle_connect_message_reply_write(int r);
- CtPtr replace(AsyncConnectionRef existing, ceph_msg_connect_reply &reply,
- bufferlist &authorizer_reply);
- CtPtr open(ceph_msg_connect_reply &reply, bufferlist &authorizer_reply);
- CtPtr handle_ready_connect_message_reply_write(int r);
- CtPtr wait_seq();
- CtPtr handle_seq(char *buffer, int r);
- CtPtr server_ready();
-};
-
-class LoopbackProtocolV1 : public ProtocolV1 {
-public:
- LoopbackProtocolV1(AsyncConnection *connection) : ProtocolV1(connection) {
- this->can_write = WriteStatus::CANWRITE;
- }
-};
-
-#endif /* _MSG_ASYNC_PROTOCOL_V1_ */
\ No newline at end of file
+#endif /* _MSG_ASYNC_PROTOCOL_ */
\ No newline at end of file
--- /dev/null
+#include "ProtocolV1.h"
+
+#include "common/errno.h"
+
+#include "AsyncConnection.h"
+#include "AsyncMessenger.h"
+#include "common/EventTrace.h"
+#include "include/random.h"
+
+#define dout_subsys ceph_subsys_ms
+#undef dout_prefix
+#define dout_prefix _conn_prefix(_dout)
+ostream &ProtocolV1::_conn_prefix(std::ostream *_dout) {
+ return *_dout << "-- " << messenger->get_myaddrs().legacy_addr() << " >> "
+ << connection->peer_addrs.legacy_addr() << " conn("
+ << connection << (connection->msgr2 ? " msgr2" : " legacy")
+ << " :" << connection->port << " s=" << get_state_name(state)
+ << " pgs=" << peer_global_seq << " cs=" << connect_seq
+ << " l=" << connection->policy.lossy << ").";
+}
+
+#define WRITE(B, C) write(CONTINUATION(C), B)
+
+#define READ(L, C) read(CONTINUATION(C), L)
+
+#define READB(L, B, C) read(CONTINUATION(C), L, B)
+
+// Constant to limit starting sequence number to 2^31. Nothing special about
+// it, just a big number. PLR
+#define SEQ_MASK 0x7fffffff
+
+const int ASYNC_COALESCE_THRESHOLD = 256;
+
+using namespace std;
+
+static void alloc_aligned_buffer(bufferlist &data, unsigned len, unsigned off) {
+ // create a buffer to read into that matches the data alignment
+ unsigned alloc_len = 0;
+ unsigned left = len;
+ unsigned head = 0;
+ if (off & ~CEPH_PAGE_MASK) {
+ // head
+ alloc_len += CEPH_PAGE_SIZE;
+ head = std::min<uint64_t>(CEPH_PAGE_SIZE - (off & ~CEPH_PAGE_MASK), left);
+ left -= head;
+ }
+ alloc_len += left;
+ bufferptr ptr(buffer::create_small_page_aligned(alloc_len));
+ if (head) ptr.set_offset(CEPH_PAGE_SIZE - head);
+ data.push_back(std::move(ptr));
+}
+
+Protocol::Protocol(AsyncConnection *connection)
+ : connection(connection),
+ messenger(connection->async_msgr),
+ cct(connection->async_msgr->cct) {}
+
+Protocol::~Protocol() {}
+
+/**
+ * Protocol V1
+ **/
+
+ProtocolV1::ProtocolV1(AsyncConnection *connection)
+ : Protocol(connection),
+ temp_buffer(nullptr),
+ can_write(WriteStatus::NOWRITE),
+ keepalive(false),
+ connect_seq(0),
+ peer_global_seq(0),
+ msg_left(0),
+ cur_msg_size(0),
+ replacing(false),
+ is_reset_from_peer(false),
+ once_ready(false),
+ state(NONE),
+ global_seq(0),
+ got_bad_auth(false),
+ authorizer(nullptr),
+ wait_for_seq(false) {
+ temp_buffer = new char[4096];
+}
+
+ProtocolV1::~ProtocolV1() {
+ ceph_assert(out_q.empty());
+ ceph_assert(sent.empty());
+
+ delete[] temp_buffer;
+
+ if (authorizer) {
+ delete authorizer;
+ }
+}
+
+void ProtocolV1::connect() {
+ this->state = START_CONNECT;
+
+ // reset connect state variables
+ got_bad_auth = false;
+ if (authorizer) {
+ delete authorizer;
+ authorizer = nullptr;
+ }
+ authorizer_buf.clear();
+ memset(&connect_msg, 0, sizeof(connect_msg));
+ memset(&connect_reply, 0, sizeof(connect_reply));
+
+ global_seq = messenger->get_global_seq();
+}
+
+void ProtocolV1::accept() { this->state = START_ACCEPT; }
+
+bool ProtocolV1::is_connected() {
+ return can_write.load() == WriteStatus::CANWRITE;
+}
+
+void ProtocolV1::stop() {
+ ldout(cct, 20) << __func__ << dendl;
+ if (state == CLOSED) {
+ return;
+ }
+
+ if (connection->delay_state) connection->delay_state->flush();
+
+ ldout(cct, 2) << __func__ << dendl;
+ std::lock_guard<std::mutex> l(connection->write_lock);
+
+ reset_recv_state();
+ discard_out_queue();
+
+ connection->_stop();
+
+ can_write = WriteStatus::CLOSED;
+ state = CLOSED;
+}
+
+void ProtocolV1::fault() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (state == CLOSED || state == NONE) {
+ ldout(cct, 10) << __func__ << " connection is already closed" << dendl;
+ return;
+ }
+
+ if (connection->policy.lossy && state != START_CONNECT &&
+ state != CONNECTING) {
+ ldout(cct, 1) << __func__ << " on lossy channel, failing" << dendl;
+ stop();
+ connection->dispatch_queue->queue_reset(connection);
+ return;
+ }
+
+ connection->write_lock.lock();
+ can_write = WriteStatus::NOWRITE;
+ is_reset_from_peer = false;
+
+ // requeue sent items
+ requeue_sent();
+
+ if (!once_ready && out_q.empty() && state >= START_ACCEPT &&
+ state <= ACCEPTING_WAIT_CONNECT_MSG_AUTH && !replacing) {
+ ldout(cct, 10) << __func__ << " with nothing to send and in the half "
+ << " accept state just closed" << dendl;
+ connection->write_lock.unlock();
+ stop();
+ connection->dispatch_queue->queue_reset(connection);
+ return;
+ }
+ replacing = false;
+
+ connection->fault();
+
+ reset_recv_state();
+
+ if (connection->policy.standby && out_q.empty() && state != WAIT) {
+ ldout(cct, 10) << __func__ << " with nothing to send, going to standby"
+ << dendl;
+ state = STANDBY;
+ connection->write_lock.unlock();
+ return;
+ }
+
+ connection->write_lock.unlock();
+
+ if ((state >= START_CONNECT && state <= CONNECTING_SEND_CONNECT_MSG) ||
+ state == WAIT) {
+ // backoff!
+ if (state == WAIT) {
+ backoff.set_from_double(cct->_conf->ms_max_backoff);
+ } else if (backoff == utime_t()) {
+ backoff.set_from_double(cct->_conf->ms_initial_backoff);
+ } else {
+ backoff += backoff;
+ if (backoff > cct->_conf->ms_max_backoff)
+ backoff.set_from_double(cct->_conf->ms_max_backoff);
+ }
+
+ state = START_CONNECT;
+ connection->state = AsyncConnection::STATE_CONNECTING;
+ ldout(cct, 10) << __func__ << " waiting " << backoff << dendl;
+ // woke up again;
+ connection->register_time_events.insert(
+ connection->center->create_time_event(backoff.to_nsec() / 1000,
+ connection->wakeup_handler));
+ } else {
+ // policy maybe empty when state is in accept
+ if (connection->policy.server) {
+ ldout(cct, 0) << __func__ << " server, going to standby" << dendl;
+ state = STANDBY;
+ } else {
+ ldout(cct, 0) << __func__ << " initiating reconnect" << dendl;
+ connect_seq++;
+ state = START_CONNECT;
+ connection->state = AsyncConnection::STATE_CONNECTING;
+ }
+ backoff = utime_t();
+ connection->center->dispatch_event_external(connection->read_handler);
+ }
+}
+
+void ProtocolV1::send_message(Message *m) {
+ bufferlist bl;
+ uint64_t f = connection->get_features();
+
+ // TODO: Currently not all messages supports reencode like MOSDMap, so here
+ // only let fast dispatch support messages prepare message
+ bool can_fast_prepare = messenger->ms_can_fast_dispatch(m);
+ if (can_fast_prepare) {
+ prepare_send_message(f, m, bl);
+ }
+
+ std::lock_guard<std::mutex> l(connection->write_lock);
+ // "features" changes will change the payload encoding
+ if (can_fast_prepare &&
+ (can_write == WriteStatus::NOWRITE || connection->get_features() != f)) {
+ // ensure the correctness of message encoding
+ bl.clear();
+ m->clear_payload();
+ ldout(cct, 5) << __func__ << " clear encoded buffer previous " << f
+ << " != " << connection->get_features() << dendl;
+ }
+ if (can_write == WriteStatus::CLOSED) {
+ ldout(cct, 10) << __func__ << " connection closed."
+ << " Drop message " << m << dendl;
+ m->put();
+ } else {
+ m->trace.event("async enqueueing message");
+ out_q[m->get_priority()].emplace_back(std::move(bl), m);
+ ldout(cct, 15) << __func__ << " inline write is denied, reschedule m=" << m
+ << dendl;
+ if (can_write != WriteStatus::REPLACING) {
+ connection->center->dispatch_event_external(connection->write_handler);
+ }
+ }
+}
+
+void ProtocolV1::prepare_send_message(uint64_t features, Message *m,
+ bufferlist &bl) {
+ ldout(cct, 20) << __func__ << " m " << *m << dendl;
+
+ // associate message with Connection (for benefit of encode_payload)
+ if (m->empty_payload()) {
+ ldout(cct, 20) << __func__ << " encoding features " << features << " " << m
+ << " " << *m << dendl;
+ } else {
+ ldout(cct, 20) << __func__ << " half-reencoding features " << features
+ << " " << m << " " << *m << dendl;
+ }
+
+ // encode and copy out of *m
+ m->encode(features, messenger->crcflags);
+
+ bl.append(m->get_payload());
+ bl.append(m->get_middle());
+ bl.append(m->get_data());
+}
+
+void ProtocolV1::send_keepalive() {
+ ldout(cct, 10) << __func__ << dendl;
+ std::lock_guard<std::mutex> l(connection->write_lock);
+ if (can_write != WriteStatus::CLOSED) {
+ keepalive = true;
+ connection->center->dispatch_event_external(connection->write_handler);
+ }
+}
+
+void ProtocolV1::read_event() {
+ ldout(cct, 20) << __func__ << dendl;
+ switch (state) {
+ case START_CONNECT:
+ CONTINUATION_RUN(CONTINUATION(send_client_banner));
+ break;
+ case START_ACCEPT:
+ CONTINUATION_RUN(CONTINUATION(send_server_banner));
+ break;
+ case OPENED:
+ CONTINUATION_RUN(CONTINUATION(wait_message));
+ break;
+ case THROTTLE_MESSAGE:
+ CONTINUATION_RUN(CONTINUATION(throttle_message));
+ break;
+ case THROTTLE_BYTES:
+ CONTINUATION_RUN(CONTINUATION(throttle_bytes));
+ break;
+ case THROTTLE_DISPATCH_QUEUE:
+ CONTINUATION_RUN(CONTINUATION(throttle_dispatch_queue));
+ break;
+ default:
+ break;
+ }
+}
+
+void ProtocolV1::write_event() {
+ ldout(cct, 10) << __func__ << dendl;
+ ssize_t r = 0;
+
+ connection->write_lock.lock();
+ if (can_write == WriteStatus::CANWRITE) {
+ if (keepalive) {
+ append_keepalive_or_ack();
+ keepalive = false;
+ }
+
+ auto start = ceph::mono_clock::now();
+ bool more;
+ do {
+ bufferlist data;
+ Message *m = _get_next_outgoing(&data);
+ if (!m) {
+ break;
+ }
+
+ if (!connection->policy.lossy) {
+ // put on sent list
+ sent.push_back(m);
+ m->get();
+ }
+ more = !out_q.empty();
+ connection->write_lock.unlock();
+
+ // send_message or requeue messages may not encode message
+ if (!data.length()) {
+ prepare_send_message(connection->get_features(), m, data);
+ }
+
+ r = write_message(m, data, more);
+
+ connection->write_lock.lock();
+ if (r == 0) {
+ ;
+ } else if (r < 0) {
+ ldout(cct, 1) << __func__ << " send msg failed" << dendl;
+ break;
+ } else if (r > 0)
+ break;
+ } while (can_write == WriteStatus::CANWRITE);
+ connection->write_lock.unlock();
+
+ // if r > 0 mean data still lefted, so no need _try_send.
+ if (r == 0) {
+ uint64_t left = ack_left;
+ if (left) {
+ ceph_le64 s;
+ s = in_seq;
+ connection->outcoming_bl.append(CEPH_MSGR_TAG_ACK);
+ connection->outcoming_bl.append((char *)&s, sizeof(s));
+ ldout(cct, 10) << __func__ << " try send msg ack, acked " << left
+ << " messages" << dendl;
+ ack_left -= left;
+ left = ack_left;
+ r = connection->_try_send(left);
+ } else if (is_queued()) {
+ r = connection->_try_send();
+ }
+ }
+
+ connection->logger->tinc(l_msgr_running_send_time,
+ ceph::mono_clock::now() - start);
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " send msg failed" << dendl;
+ connection->lock.lock();
+ fault();
+ connection->lock.unlock();
+ return;
+ }
+ } else {
+ connection->write_lock.unlock();
+ connection->lock.lock();
+ connection->write_lock.lock();
+ if (state == STANDBY && !connection->policy.server && is_queued()) {
+ ldout(cct, 10) << __func__ << " policy.server is false" << dendl;
+ connection->_connect();
+ } else if (connection->cs && state != NONE && state != CLOSED &&
+ state != START_CONNECT) {
+ r = connection->_try_send();
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " send outcoming bl failed" << dendl;
+ connection->write_lock.unlock();
+ fault();
+ connection->lock.unlock();
+ return;
+ }
+ }
+ connection->write_lock.unlock();
+ connection->lock.unlock();
+ }
+}
+
+bool ProtocolV1::is_queued() {
+ return !out_q.empty() || connection->is_queued();
+}
+
+void ProtocolV1::run_continuation(CtPtr continuation) {
+ CONTINUATION_RUN(continuation);
+}
+
+CtPtr ProtocolV1::read(CONTINUATION_PARAM(next, ProtocolV1, char *, int),
+ int len, char *buffer) {
+ if (!buffer) {
+ buffer = temp_buffer;
+ }
+ ssize_t r = connection->read(len, buffer,
+ [CONTINUATION(next), this](char *buffer, int r) {
+ CONTINUATION(next)->setParams(buffer, r);
+ CONTINUATION_RUN(CONTINUATION(next));
+ });
+ if (r <= 0) {
+ return CONTINUE(next, buffer, r);
+ }
+
+ return nullptr;
+}
+
+CtPtr ProtocolV1::write(CONTINUATION_PARAM(next, ProtocolV1, int),
+ bufferlist &buffer) {
+ ssize_t r = connection->write(buffer, [CONTINUATION(next), this](int r) {
+ CONTINUATION(next)->setParams(r);
+ CONTINUATION_RUN(CONTINUATION(next));
+ });
+ if (r <= 0) {
+ return CONTINUE(next, r);
+ }
+
+ return nullptr;
+}
+
+CtPtr ProtocolV1::ready() {
+ ldout(cct, 25) << __func__ << dendl;
+
+ // make sure no pending tick timer
+ if (connection->last_tick_id) {
+ connection->center->delete_time_event(connection->last_tick_id);
+ }
+ connection->last_tick_id = connection->center->create_time_event(
+ connection->inactive_timeout_us, connection->tick_handler);
+
+ connection->write_lock.lock();
+ can_write = WriteStatus::CANWRITE;
+ if (is_queued()) {
+ connection->center->dispatch_event_external(connection->write_handler);
+ }
+ connection->write_lock.unlock();
+ connection->maybe_start_delay_thread();
+
+ state = OPENED;
+ return wait_message();
+}
+
+CtPtr ProtocolV1::wait_message() {
+ if (state != OPENED) { // must have changed due to a replace
+ return nullptr;
+ }
+
+ ldout(cct, 20) << __func__ << dendl;
+
+ return READ(sizeof(char), handle_message);
+}
+
+CtPtr ProtocolV1::handle_message(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read tag failed" << dendl;
+ return _fault();
+ }
+
+ char tag = buffer[0];
+ ldout(cct, 20) << __func__ << " process tag " << (int)tag << dendl;
+
+ if (tag == CEPH_MSGR_TAG_KEEPALIVE) {
+ ldout(cct, 20) << __func__ << " got KEEPALIVE" << dendl;
+ connection->set_last_keepalive(ceph_clock_now());
+ } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2) {
+ return READ(sizeof(ceph_timespec), handle_keepalive2);
+ } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2_ACK) {
+ return READ(sizeof(ceph_timespec), handle_keepalive2_ack);
+ } else if (tag == CEPH_MSGR_TAG_ACK) {
+ return READ(sizeof(ceph_le64), handle_tag_ack);
+ } else if (tag == CEPH_MSGR_TAG_MSG) {
+#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
+ ltt_recv_stamp = ceph_clock_now();
+#endif
+ recv_stamp = ceph_clock_now();
+ ldout(cct, 20) << __func__ << " begin MSG" << dendl;
+ return READ(sizeof(ceph_msg_header), handle_message_header);
+ } else if (tag == CEPH_MSGR_TAG_CLOSE) {
+ ldout(cct, 20) << __func__ << " got CLOSE" << dendl;
+ stop();
+ } else {
+ ldout(cct, 0) << __func__ << " bad tag " << (int)tag << dendl;
+ return _fault();
+ }
+ return nullptr;
+}
+
+CtPtr ProtocolV1::handle_keepalive2(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 30) << __func__ << " got KEEPALIVE2 tag ..." << dendl;
+
+ ceph_timespec *t;
+ t = (ceph_timespec *)buffer;
+ utime_t kp_t = utime_t(*t);
+ connection->write_lock.lock();
+ append_keepalive_or_ack(true, &kp_t);
+ connection->write_lock.unlock();
+
+ ldout(cct, 20) << __func__ << " got KEEPALIVE2 " << kp_t << dendl;
+ connection->set_last_keepalive(ceph_clock_now());
+
+ if (is_connected()) {
+ connection->center->dispatch_event_external(connection->write_handler);
+ }
+
+ return CONTINUE(wait_message);
+}
+
+void ProtocolV1::append_keepalive_or_ack(bool ack, utime_t *tp) {
+ ldout(cct, 10) << __func__ << dendl;
+ if (ack) {
+ ceph_assert(tp);
+ struct ceph_timespec ts;
+ tp->encode_timeval(&ts);
+ connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2_ACK);
+ connection->outcoming_bl.append((char *)&ts, sizeof(ts));
+ } else if (connection->has_feature(CEPH_FEATURE_MSGR_KEEPALIVE2)) {
+ struct ceph_timespec ts;
+ utime_t t = ceph_clock_now();
+ t.encode_timeval(&ts);
+ connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2);
+ connection->outcoming_bl.append((char *)&ts, sizeof(ts));
+ } else {
+ connection->outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE);
+ }
+}
+
+CtPtr ProtocolV1::handle_keepalive2_ack(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
+ return _fault();
+ }
+
+ ceph_timespec *t;
+ t = (ceph_timespec *)buffer;
+ connection->set_last_keepalive_ack(utime_t(*t));
+ ldout(cct, 20) << __func__ << " got KEEPALIVE_ACK" << dendl;
+
+ return CONTINUE(wait_message);
+}
+
+CtPtr ProtocolV1::handle_tag_ack(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read ack seq failed" << dendl;
+ return _fault();
+ }
+
+ ceph_le64 seq;
+ seq = *(ceph_le64 *)buffer;
+ ldout(cct, 20) << __func__ << " got ACK" << dendl;
+
+ ldout(cct, 15) << __func__ << " got ack seq " << seq << dendl;
+ // trim sent list
+ static const int max_pending = 128;
+ int i = 0;
+ Message *pending[max_pending];
+ connection->write_lock.lock();
+ while (!sent.empty() && sent.front()->get_seq() <= seq && i < max_pending) {
+ Message *m = sent.front();
+ sent.pop_front();
+ pending[i++] = m;
+ ldout(cct, 10) << __func__ << " got ack seq " << seq
+ << " >= " << m->get_seq() << " on " << m << " " << *m
+ << dendl;
+ }
+ connection->write_lock.unlock();
+ for (int k = 0; k < i; k++) {
+ pending[k]->put();
+ }
+
+ return CONTINUE(wait_message);
+}
+
+CtPtr ProtocolV1::handle_message_header(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read message header failed" << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 20) << __func__ << " got MSG header" << dendl;
+
+ ceph_msg_header header;
+ header = *((ceph_msg_header *)buffer);
+
+ ldout(cct, 20) << __func__ << " got envelope type=" << header.type << " src "
+ << entity_name_t(header.src) << " front=" << header.front_len
+ << " data=" << header.data_len << " off " << header.data_off
+ << dendl;
+
+ if (messenger->crcflags & MSG_CRC_HEADER) {
+ __u32 header_crc = 0;
+ header_crc = ceph_crc32c(0, (unsigned char *)&header,
+ sizeof(header) - sizeof(header.crc));
+ // verify header crc
+ if (header_crc != header.crc) {
+ ldout(cct, 0) << __func__ << " got bad header crc " << header_crc
+ << " != " << header.crc << dendl;
+ return _fault();
+ }
+ }
+
+ // Reset state
+ data_buf.clear();
+ front.clear();
+ middle.clear();
+ data.clear();
+ current_header = header;
+
+ state = THROTTLE_MESSAGE;
+ return CONTINUE(throttle_message);
+}
+
+CtPtr ProtocolV1::throttle_message() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (connection->policy.throttler_messages) {
+ ldout(cct, 10) << __func__ << " wants " << 1
+ << " message from policy throttler "
+ << connection->policy.throttler_messages->get_current()
+ << "/" << connection->policy.throttler_messages->get_max()
+ << dendl;
+ if (!connection->policy.throttler_messages->get_or_fail()) {
+ ldout(cct, 10) << __func__ << " wants 1 message from policy throttle "
+ << connection->policy.throttler_messages->get_current()
+ << "/" << connection->policy.throttler_messages->get_max()
+ << " failed, just wait." << dendl;
+ // following thread pool deal with th full message queue isn't a
+ // short time, so we can wait a ms.
+ if (connection->register_time_events.empty()) {
+ connection->register_time_events.insert(
+ connection->center->create_time_event(1000,
+ connection->wakeup_handler));
+ }
+ return nullptr;
+ }
+ }
+
+ state = THROTTLE_BYTES;
+ return CONTINUE(throttle_bytes);
+}
+
+CtPtr ProtocolV1::throttle_bytes() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ cur_msg_size = current_header.front_len + current_header.middle_len +
+ current_header.data_len;
+ if (cur_msg_size) {
+ if (connection->policy.throttler_bytes) {
+ ldout(cct, 10) << __func__ << " wants " << cur_msg_size
+ << " bytes from policy throttler "
+ << connection->policy.throttler_bytes->get_current() << "/"
+ << connection->policy.throttler_bytes->get_max() << dendl;
+ if (!connection->policy.throttler_bytes->get_or_fail(cur_msg_size)) {
+ ldout(cct, 10) << __func__ << " wants " << cur_msg_size
+ << " bytes from policy throttler "
+ << connection->policy.throttler_bytes->get_current()
+ << "/" << connection->policy.throttler_bytes->get_max()
+ << " failed, just wait." << dendl;
+ // following thread pool deal with th full message queue isn't a
+ // short time, so we can wait a ms.
+ if (connection->register_time_events.empty()) {
+ connection->register_time_events.insert(
+ connection->center->create_time_event(
+ 1000, connection->wakeup_handler));
+ }
+ return nullptr;
+ }
+ }
+ }
+
+ state = THROTTLE_DISPATCH_QUEUE;
+ return CONTINUE(throttle_dispatch_queue);
+}
+
+CtPtr ProtocolV1::throttle_dispatch_queue() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (cur_msg_size) {
+ if (!connection->dispatch_queue->dispatch_throttler.get_or_fail(
+ cur_msg_size)) {
+ ldout(cct, 10)
+ << __func__ << " wants " << cur_msg_size
+ << " bytes from dispatch throttle "
+ << connection->dispatch_queue->dispatch_throttler.get_current() << "/"
+ << connection->dispatch_queue->dispatch_throttler.get_max()
+ << " failed, just wait." << dendl;
+ // following thread pool deal with th full message queue isn't a
+ // short time, so we can wait a ms.
+ if (connection->register_time_events.empty()) {
+ connection->register_time_events.insert(
+ connection->center->create_time_event(1000,
+ connection->wakeup_handler));
+ }
+ return nullptr;
+ }
+ }
+
+ throttle_stamp = ceph_clock_now();
+
+ state = READ_MESSAGE_FRONT;
+ return read_message_front();
+}
+
+CtPtr ProtocolV1::read_message_front() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ unsigned front_len = current_header.front_len;
+ if (front_len) {
+ if (!front.length()) {
+ front.push_back(buffer::create(front_len));
+ }
+ return READB(front_len, front.c_str(), handle_message_front);
+ }
+ return read_message_middle();
+}
+
+CtPtr ProtocolV1::handle_message_front(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read message front failed" << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 20) << __func__ << " got front " << front.length() << dendl;
+
+ return read_message_middle();
+}
+
+CtPtr ProtocolV1::read_message_middle() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (current_header.middle_len) {
+ if (!middle.length()) {
+ middle.push_back(buffer::create(current_header.middle_len));
+ }
+ return READB(current_header.middle_len, middle.c_str(),
+ handle_message_middle);
+ }
+
+ return read_message_data_prepare();
+}
+
+CtPtr ProtocolV1::handle_message_middle(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read message middle failed" << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 20) << __func__ << " got middle " << middle.length() << dendl;
+
+ return read_message_data_prepare();
+}
+
+CtPtr ProtocolV1::read_message_data_prepare() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ unsigned data_len = le32_to_cpu(current_header.data_len);
+ unsigned data_off = le32_to_cpu(current_header.data_off);
+
+ if (data_len) {
+ // get a buffer
+ map<ceph_tid_t, pair<bufferlist, int> >::iterator p =
+ connection->rx_buffers.find(current_header.tid);
+ if (p != connection->rx_buffers.end()) {
+ ldout(cct, 10) << __func__ << " seleting rx buffer v " << p->second.second
+ << " at offset " << data_off << " len "
+ << p->second.first.length() << dendl;
+ data_buf = p->second.first;
+ // make sure it's big enough
+ if (data_buf.length() < data_len)
+ data_buf.push_back(buffer::create(data_len - data_buf.length()));
+ data_blp = data_buf.begin();
+ } else {
+ ldout(cct, 20) << __func__ << " allocating new rx buffer at offset "
+ << data_off << dendl;
+ alloc_aligned_buffer(data_buf, data_len, data_off);
+ data_blp = data_buf.begin();
+ }
+ }
+
+ msg_left = data_len;
+
+ return CONTINUE(read_message_data);
+}
+
+CtPtr ProtocolV1::read_message_data() {
+ ldout(cct, 20) << __func__ << " msg_left=" << msg_left << dendl;
+
+ if (msg_left > 0) {
+ bufferptr bp = data_blp.get_current_ptr();
+ unsigned read_len = std::min(bp.length(), msg_left);
+
+ return READB(read_len, bp.c_str(), handle_message_data);
+ }
+
+ return read_message_footer();
+}
+
+CtPtr ProtocolV1::handle_message_data(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read data error " << dendl;
+ return _fault();
+ }
+
+ bufferptr bp = data_blp.get_current_ptr();
+ unsigned read_len = std::min(bp.length(), msg_left);
+ ceph_assert(read_len < std::numeric_limits<int>::max());
+ data_blp.advance(read_len);
+ data.append(bp, 0, read_len);
+ msg_left -= read_len;
+
+ return CONTINUE(read_message_data);
+}
+
+CtPtr ProtocolV1::read_message_footer() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ state = READ_FOOTER_AND_DISPATCH;
+
+ unsigned len;
+ if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
+ len = sizeof(ceph_msg_footer);
+ } else {
+ len = sizeof(ceph_msg_footer_old);
+ }
+
+ return READ(len, handle_message_footer);
+}
+
+CtPtr ProtocolV1::handle_message_footer(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read footer data error " << dendl;
+ return _fault();
+ }
+
+ ceph_msg_footer footer;
+ ceph_msg_footer_old old_footer;
+
+ if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
+ footer = *((ceph_msg_footer *)buffer);
+ } else {
+ old_footer = *((ceph_msg_footer_old *)buffer);
+ footer.front_crc = old_footer.front_crc;
+ footer.middle_crc = old_footer.middle_crc;
+ footer.data_crc = old_footer.data_crc;
+ footer.sig = 0;
+ footer.flags = old_footer.flags;
+ }
+
+ int aborted = (footer.flags & CEPH_MSG_FOOTER_COMPLETE) == 0;
+ ldout(cct, 10) << __func__ << " aborted = " << aborted << dendl;
+ if (aborted) {
+ ldout(cct, 0) << __func__ << " got " << front.length() << " + "
+ << middle.length() << " + " << data.length()
+ << " byte message.. ABORTED" << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 20) << __func__ << " got " << front.length() << " + "
+ << middle.length() << " + " << data.length() << " byte message"
+ << dendl;
+ Message *message = decode_message(cct, messenger->crcflags, current_header,
+ footer, front, middle, data, connection);
+ if (!message) {
+ ldout(cct, 1) << __func__ << " decode message failed " << dendl;
+ return _fault();
+ }
+
+ //
+ // Check the signature if one should be present. A zero return indicates
+ // success. PLR
+ //
+
+ if (session_security.get() == NULL) {
+ ldout(cct, 10) << __func__ << " no session security set" << dendl;
+ } else {
+ if (session_security->check_message_signature(message)) {
+ ldout(cct, 0) << __func__ << " Signature check failed" << dendl;
+ message->put();
+ return _fault();
+ }
+ }
+ message->set_byte_throttler(connection->policy.throttler_bytes);
+ message->set_message_throttler(connection->policy.throttler_messages);
+
+ // store reservation size in message, so we don't get confused
+ // by messages entering the dispatch queue through other paths.
+ message->set_dispatch_throttle_size(cur_msg_size);
+
+ message->set_recv_stamp(recv_stamp);
+ message->set_throttle_stamp(throttle_stamp);
+ message->set_recv_complete_stamp(ceph_clock_now());
+
+ // check received seq#. if it is old, drop the message.
+ // note that incoming messages may skip ahead. this is convenient for the
+ // client side queueing because messages can't be renumbered, but the (kernel)
+ // client will occasionally pull a message out of the sent queue to send
+ // elsewhere. in that case it doesn't matter if we "got" it or not.
+ uint64_t cur_seq = in_seq;
+ if (message->get_seq() <= cur_seq) {
+ ldout(cct, 0) << __func__ << " got old message " << message->get_seq()
+ << " <= " << cur_seq << " " << message << " " << *message
+ << ", discarding" << dendl;
+ message->put();
+ if (connection->has_feature(CEPH_FEATURE_RECONNECT_SEQ) &&
+ cct->_conf->ms_die_on_old_message) {
+ ceph_assert(0 == "old msgs despite reconnect_seq feature");
+ }
+ return nullptr;
+ }
+ if (message->get_seq() > cur_seq + 1) {
+ ldout(cct, 0) << __func__ << " missed message? skipped from seq "
+ << cur_seq << " to " << message->get_seq() << dendl;
+ if (cct->_conf->ms_die_on_skipped_message) {
+ ceph_assert(0 == "skipped incoming seq");
+ }
+ }
+
+ message->set_connection(connection);
+
+#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
+ if (message->get_type() == CEPH_MSG_OSD_OP ||
+ message->get_type() == CEPH_MSG_OSD_OPREPLY) {
+ utime_t ltt_processed_stamp = ceph_clock_now();
+ double usecs_elapsed =
+ (ltt_processed_stamp.to_nsec() - ltt_recv_stamp.to_nsec()) / 1000;
+ ostringstream buf;
+ if (message->get_type() == CEPH_MSG_OSD_OP)
+ OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OP",
+ false);
+ else
+ OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OPREPLY",
+ false);
+ }
+#endif
+
+ // note last received message.
+ in_seq = message->get_seq();
+ ldout(cct, 5) << " rx " << message->get_source() << " seq "
+ << message->get_seq() << " " << message << " " << *message
+ << dendl;
+
+ bool need_dispatch_writer = true;
+ if (!connection->policy.lossy) {
+ ack_left++;
+ need_dispatch_writer = true;
+ }
+
+ state = OPENED;
+
+ connection->logger->inc(l_msgr_recv_messages);
+ connection->logger->inc(
+ l_msgr_recv_bytes,
+ cur_msg_size + sizeof(ceph_msg_header) + sizeof(ceph_msg_footer));
+
+ messenger->ms_fast_preprocess(message);
+ auto fast_dispatch_time = ceph::mono_clock::now();
+ connection->logger->tinc(l_msgr_running_recv_time,
+ fast_dispatch_time - connection->recv_start_time);
+ if (connection->delay_state) {
+ double delay_period = 0;
+ if (rand() % 10000 < cct->_conf->ms_inject_delay_probability * 10000.0) {
+ delay_period =
+ cct->_conf->ms_inject_delay_max * (double)(rand() % 10000) / 10000.0;
+ ldout(cct, 1) << "queue_received will delay after "
+ << (ceph_clock_now() + delay_period) << " on " << message
+ << " " << *message << dendl;
+ }
+ connection->delay_state->queue(delay_period, message);
+ } else if (messenger->ms_can_fast_dispatch(message)) {
+ connection->lock.unlock();
+ connection->dispatch_queue->fast_dispatch(message);
+ connection->recv_start_time = ceph::mono_clock::now();
+ connection->logger->tinc(l_msgr_running_fast_dispatch_time,
+ connection->recv_start_time - fast_dispatch_time);
+ connection->lock.lock();
+ } else {
+ connection->dispatch_queue->enqueue(message, message->get_priority(),
+ connection->conn_id);
+ }
+
+ // clean up local buffer references
+ data_buf.clear();
+ front.clear();
+ middle.clear();
+ data.clear();
+
+ if (need_dispatch_writer && connection->is_connected()) {
+ connection->center->dispatch_event_external(connection->write_handler);
+ }
+
+ return CONTINUE(wait_message);
+}
+
+void ProtocolV1::session_reset() {
+ ldout(cct, 10) << __func__ << " started" << dendl;
+
+ std::lock_guard<std::mutex> l(connection->write_lock);
+ if (connection->delay_state) {
+ connection->delay_state->discard();
+ }
+
+ connection->dispatch_queue->discard_queue(connection->conn_id);
+ discard_out_queue();
+ // note: we need to clear outcoming_bl here, but session_reset may be
+ // called by other thread, so let caller clear this itself!
+ // outcoming_bl.clear();
+
+ connection->dispatch_queue->queue_remote_reset(connection);
+
+ randomize_out_seq();
+
+ in_seq = 0;
+ connect_seq = 0;
+ // it's safe to directly set 0, double locked
+ ack_left = 0;
+ once_ready = false;
+ can_write = WriteStatus::NOWRITE;
+}
+
+void ProtocolV1::randomize_out_seq() {
+ if (connection->get_features() & CEPH_FEATURE_MSG_AUTH) {
+ // Set out_seq to a random value, so CRC won't be predictable.
+ auto rand_seq = ceph::util::generate_random_number<uint64_t>(0, SEQ_MASK);
+ ldout(cct, 10) << __func__ << " randomize_out_seq " << rand_seq << dendl;
+ out_seq = rand_seq;
+ } else {
+ // previously, seq #'s always started at 0.
+ out_seq = 0;
+ }
+}
+
+ssize_t ProtocolV1::write_message(Message *m, bufferlist &bl, bool more) {
+ FUNCTRACE(cct);
+ ceph_assert(connection->center->in_thread());
+ m->set_seq(++out_seq);
+
+ if (messenger->crcflags & MSG_CRC_HEADER) {
+ m->calc_header_crc();
+ }
+
+ ceph_msg_header &header = m->get_header();
+ ceph_msg_footer &footer = m->get_footer();
+
+ // TODO: let sign_message could be reentry?
+ // Now that we have all the crcs calculated, handle the
+ // digital signature for the message, if the AsyncConnection has session
+ // security set up. Some session security options do not
+ // actually calculate and check the signature, but they should
+ // handle the calls to sign_message and check_signature. PLR
+ if (session_security.get() == NULL) {
+ ldout(cct, 20) << __func__ << " no session security" << dendl;
+ } else {
+ if (session_security->sign_message(m)) {
+ ldout(cct, 20) << __func__ << " failed to sign m=" << m
+ << "): sig = " << footer.sig << dendl;
+ } else {
+ ldout(cct, 20) << __func__ << " signed m=" << m
+ << "): sig = " << footer.sig << dendl;
+ }
+ }
+
+ connection->outcoming_bl.append(CEPH_MSGR_TAG_MSG);
+ connection->outcoming_bl.append((char *)&header, sizeof(header));
+
+ ldout(cct, 20) << __func__ << " sending message type=" << header.type
+ << " src " << entity_name_t(header.src)
+ << " front=" << header.front_len << " data=" << header.data_len
+ << " off " << header.data_off << dendl;
+
+ if ((bl.length() <= ASYNC_COALESCE_THRESHOLD) && (bl.buffers().size() > 1)) {
+ for (const auto &pb : bl.buffers()) {
+ connection->outcoming_bl.append((char *)pb.c_str(), pb.length());
+ }
+ } else {
+ connection->outcoming_bl.claim_append(bl);
+ }
+
+ // send footer; if receiver doesn't support signatures, use the old footer
+ // format
+ ceph_msg_footer_old old_footer;
+ if (connection->has_feature(CEPH_FEATURE_MSG_AUTH)) {
+ connection->outcoming_bl.append((char *)&footer, sizeof(footer));
+ } else {
+ if (messenger->crcflags & MSG_CRC_HEADER) {
+ old_footer.front_crc = footer.front_crc;
+ old_footer.middle_crc = footer.middle_crc;
+ old_footer.data_crc = footer.data_crc;
+ } else {
+ old_footer.front_crc = old_footer.middle_crc = 0;
+ }
+ old_footer.data_crc =
+ messenger->crcflags & MSG_CRC_DATA ? footer.data_crc : 0;
+ old_footer.flags = footer.flags;
+ connection->outcoming_bl.append((char *)&old_footer, sizeof(old_footer));
+ }
+
+ m->trace.event("async writing message");
+ ldout(cct, 20) << __func__ << " sending " << m->get_seq() << " " << m
+ << dendl;
+ ssize_t total_send_size = connection->outcoming_bl.length();
+ ssize_t rc = connection->_try_send(more);
+ if (rc < 0) {
+ ldout(cct, 1) << __func__ << " error sending " << m << ", "
+ << cpp_strerror(rc) << dendl;
+ } else {
+ connection->logger->inc(
+ l_msgr_send_bytes, total_send_size - connection->outcoming_bl.length());
+ ldout(cct, 10) << __func__ << " sending " << m
+ << (rc ? " continuely." : " done.") << dendl;
+ }
+ if (m->get_type() == CEPH_MSG_OSD_OP)
+ OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OP_END", false);
+ else if (m->get_type() == CEPH_MSG_OSD_OPREPLY)
+ OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OPREPLY_END", false);
+ m->put();
+
+ return rc;
+}
+
+void ProtocolV1::requeue_sent() {
+ if (sent.empty()) {
+ return;
+ }
+
+ list<pair<bufferlist, Message *> > &rq = out_q[CEPH_MSG_PRIO_HIGHEST];
+ out_seq -= sent.size();
+ while (!sent.empty()) {
+ Message *m = sent.back();
+ sent.pop_back();
+ ldout(cct, 10) << __func__ << " " << *m << " for resend "
+ << " (" << m->get_seq() << ")" << dendl;
+ rq.push_front(make_pair(bufferlist(), m));
+ }
+}
+
+uint64_t ProtocolV1::discard_requeued_up_to(uint64_t out_seq, uint64_t seq) {
+ ldout(cct, 10) << __func__ << " " << seq << dendl;
+ std::lock_guard<std::mutex> l(connection->write_lock);
+ if (out_q.count(CEPH_MSG_PRIO_HIGHEST) == 0) {
+ return seq;
+ }
+ list<pair<bufferlist, Message *> > &rq = out_q[CEPH_MSG_PRIO_HIGHEST];
+ uint64_t count = out_seq;
+ while (!rq.empty()) {
+ pair<bufferlist, Message *> p = rq.front();
+ if (p.second->get_seq() == 0 || p.second->get_seq() > seq) break;
+ ldout(cct, 10) << __func__ << " " << *(p.second) << " for resend seq "
+ << p.second->get_seq() << " <= " << seq << ", discarding"
+ << dendl;
+ p.second->put();
+ rq.pop_front();
+ count++;
+ }
+ if (rq.empty()) out_q.erase(CEPH_MSG_PRIO_HIGHEST);
+ return count;
+}
+
+/*
+ * Tears down the message queues, and removes them from the
+ * DispatchQueue Must hold write_lock prior to calling.
+ */
+void ProtocolV1::discard_out_queue() {
+ ldout(cct, 10) << __func__ << " started" << dendl;
+
+ for (list<Message *>::iterator p = sent.begin(); p != sent.end(); ++p) {
+ ldout(cct, 20) << __func__ << " discard " << *p << dendl;
+ (*p)->put();
+ }
+ sent.clear();
+ for (map<int, list<pair<bufferlist, Message *> > >::iterator p =
+ out_q.begin();
+ p != out_q.end(); ++p) {
+ for (list<pair<bufferlist, Message *> >::iterator r = p->second.begin();
+ r != p->second.end(); ++r) {
+ ldout(cct, 20) << __func__ << " discard " << r->second << dendl;
+ r->second->put();
+ }
+ }
+ out_q.clear();
+}
+
+void ProtocolV1::reset_recv_state() {
+ // clean up state internal variables and states
+ if (state == CONNECTING_SEND_CONNECT_MSG) {
+ if (authorizer) {
+ delete authorizer;
+ }
+ authorizer = nullptr;
+ got_bad_auth = false;
+ }
+
+ // clean read and write callbacks
+ connection->pendingReadLen.reset();
+ connection->writeCallback.reset();
+
+ if (state > THROTTLE_MESSAGE && state <= READ_FOOTER_AND_DISPATCH &&
+ connection->policy.throttler_messages) {
+ ldout(cct, 10) << __func__ << " releasing " << 1
+ << " message to policy throttler "
+ << connection->policy.throttler_messages->get_current()
+ << "/" << connection->policy.throttler_messages->get_max()
+ << dendl;
+ connection->policy.throttler_messages->put();
+ }
+ if (state > THROTTLE_BYTES && state <= READ_FOOTER_AND_DISPATCH) {
+ if (connection->policy.throttler_bytes) {
+ ldout(cct, 10) << __func__ << " releasing " << cur_msg_size
+ << " bytes to policy throttler "
+ << connection->policy.throttler_bytes->get_current() << "/"
+ << connection->policy.throttler_bytes->get_max() << dendl;
+ connection->policy.throttler_bytes->put(cur_msg_size);
+ }
+ }
+ if (state > THROTTLE_DISPATCH_QUEUE && state <= READ_FOOTER_AND_DISPATCH) {
+ ldout(cct, 10)
+ << __func__ << " releasing " << cur_msg_size
+ << " bytes to dispatch_queue throttler "
+ << connection->dispatch_queue->dispatch_throttler.get_current() << "/"
+ << connection->dispatch_queue->dispatch_throttler.get_max() << dendl;
+ connection->dispatch_queue->dispatch_throttle_release(cur_msg_size);
+ }
+}
+
+Message *ProtocolV1::_get_next_outgoing(bufferlist *bl) {
+ Message *m = 0;
+ if (!out_q.empty()) {
+ map<int, list<pair<bufferlist, Message *> > >::reverse_iterator it =
+ out_q.rbegin();
+ ceph_assert(!it->second.empty());
+ list<pair<bufferlist, Message *> >::iterator p = it->second.begin();
+ m = p->second;
+ if (bl) bl->swap(p->first);
+ it->second.erase(p);
+ if (it->second.empty()) out_q.erase(it->first);
+ }
+ return m;
+}
+
+/**
+ * Client Protocol V1
+ **/
+
+CtPtr ProtocolV1::send_client_banner() {
+ ldout(cct, 20) << __func__ << dendl;
+ state = CONNECTING;
+
+ bufferlist bl;
+ bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
+ return WRITE(bl, handle_client_banner_write);
+}
+
+CtPtr ProtocolV1::handle_client_banner_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " write client banner failed" << dendl;
+ return _fault();
+ }
+ ldout(cct, 10) << __func__ << " connect write banner done: "
+ << connection->get_peer_addr() << dendl;
+
+ return wait_server_banner();
+}
+
+CtPtr ProtocolV1::wait_server_banner() {
+ state = CONNECTING_WAIT_BANNER_AND_IDENTIFY;
+
+ ldout(cct, 20) << __func__ << dendl;
+
+ bufferlist myaddrbl;
+ unsigned banner_len = strlen(CEPH_BANNER);
+ unsigned need_len = banner_len + sizeof(ceph_entity_addr) * 2;
+ return READ(need_len, handle_server_banner_and_identify);
+}
+
+CtPtr ProtocolV1::handle_server_banner_and_identify(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read banner and identify addresses failed"
+ << dendl;
+ return _fault();
+ }
+
+ unsigned banner_len = strlen(CEPH_BANNER);
+ if (memcmp(buffer, CEPH_BANNER, banner_len)) {
+ ldout(cct, 0) << __func__ << " connect protocol error (bad banner) on peer "
+ << connection->get_peer_addr() << dendl;
+ return _fault();
+ }
+
+ bufferlist bl;
+ entity_addr_t paddr, peer_addr_for_me;
+
+ bl.append(buffer + banner_len, sizeof(ceph_entity_addr) * 2);
+ auto p = bl.cbegin();
+ try {
+ decode(paddr, p);
+ decode(peer_addr_for_me, p);
+ } catch (const buffer::error &e) {
+ lderr(cct) << __func__ << " decode peer addr failed " << dendl;
+ return _fault();
+ }
+ ldout(cct, 20) << __func__ << " connect read peer addr " << paddr
+ << " on socket " << connection->cs.fd() << dendl;
+
+ entity_addr_t peer_addr = connection->peer_addrs.legacy_addr();
+ if (peer_addr != paddr) {
+ if (paddr.is_blank_ip() && peer_addr.get_port() == paddr.get_port() &&
+ peer_addr.get_nonce() == paddr.get_nonce()) {
+ ldout(cct, 0) << __func__ << " connect claims to be " << paddr << " not "
+ << peer_addr << " - presumably this is the same node!"
+ << dendl;
+ } else {
+ ldout(cct, 10) << __func__ << " connect claims to be " << paddr << " not "
+ << peer_addr << dendl;
+ return _fault();
+ }
+ }
+
+ ldout(cct, 20) << __func__ << " connect peer addr for me is "
+ << peer_addr_for_me << dendl;
+ connection->lock.unlock();
+ messenger->learned_addr(peer_addr_for_me);
+ if (cct->_conf->ms_inject_internal_delays &&
+ cct->_conf->ms_inject_socket_failures) {
+ if (rand() % cct->_conf->ms_inject_socket_failures == 0) {
+ ldout(cct, 10) << __func__ << " sleep for "
+ << cct->_conf->ms_inject_internal_delays << dendl;
+ utime_t t;
+ t.set_from_double(cct->_conf->ms_inject_internal_delays);
+ t.sleep();
+ }
+ }
+
+ connection->lock.lock();
+ if (state != CONNECTING_WAIT_BANNER_AND_IDENTIFY) {
+ ldout(cct, 1) << __func__
+ << " state changed while learned_addr, mark_down or "
+ << " replacing must be happened just now" << dendl;
+ return nullptr;
+ }
+
+ bufferlist myaddrbl;
+ encode(messenger->get_myaddrs().legacy_addr(), myaddrbl, 0); // legacy
+ return WRITE(myaddrbl, handle_my_addr_write);
+}
+
+CtPtr ProtocolV1::handle_my_addr_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 2) << __func__ << " connect couldn't write my addr, "
+ << cpp_strerror(r) << dendl;
+ return _fault();
+ }
+ ldout(cct, 10) << __func__ << " connect sent my addr "
+ << messenger->get_myaddrs().legacy_addr() << dendl;
+
+ return CONTINUE(send_connect_message);
+}
+
+CtPtr ProtocolV1::send_connect_message() {
+ state = CONNECTING_SEND_CONNECT_MSG;
+
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (!authorizer) {
+ authorizer = messenger->ms_deliver_get_authorizer(connection->peer_type,
+ false);
+ }
+
+ ceph_msg_connect connect;
+ connect.features = connection->policy.features_supported;
+ connect.host_type = messenger->get_myname().type();
+ connect.global_seq = global_seq;
+ connect.connect_seq = connect_seq;
+ connect.protocol_version =
+ messenger->get_proto_version(connection->peer_type, true);
+ connect.authorizer_protocol = authorizer ? authorizer->protocol : 0;
+ connect.authorizer_len = authorizer ? authorizer->bl.length() : 0;
+
+ if (authorizer) {
+ ldout(cct, 10) << __func__
+ << " connect_msg.authorizer_len=" << connect.authorizer_len
+ << " protocol=" << connect.authorizer_protocol << dendl;
+ }
+
+ connect.flags = 0;
+ if (connection->policy.lossy) {
+ connect.flags |=
+ CEPH_MSG_CONNECT_LOSSY; // this is fyi, actually, server decides!
+ }
+
+ bufferlist bl;
+ bl.append((char *)&connect, sizeof(connect));
+ if (authorizer) {
+ bl.append(authorizer->bl.c_str(), authorizer->bl.length());
+ }
+
+ ldout(cct, 10) << __func__ << " connect sending gseq=" << global_seq
+ << " cseq=" << connect_seq
+ << " proto=" << connect.protocol_version << dendl;
+
+ return WRITE(bl, handle_connect_message_write);
+}
+
+CtPtr ProtocolV1::handle_connect_message_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 2) << __func__ << " connect couldn't send reply "
+ << cpp_strerror(r) << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 20) << __func__
+ << " connect wrote (self +) cseq, waiting for reply" << dendl;
+
+ return wait_connect_reply();
+}
+
+CtPtr ProtocolV1::wait_connect_reply() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ memset(&connect_reply, 0, sizeof(connect_reply));
+ return READ(sizeof(connect_reply), handle_connect_reply_1);
+}
+
+CtPtr ProtocolV1::handle_connect_reply_1(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read connect reply failed" << dendl;
+ return _fault();
+ }
+
+ connect_reply = *((ceph_msg_connect_reply *)buffer);
+
+ ldout(cct, 20) << __func__ << " connect got reply tag "
+ << (int)connect_reply.tag << " connect_seq "
+ << connect_reply.connect_seq << " global_seq "
+ << connect_reply.global_seq << " proto "
+ << connect_reply.protocol_version << " flags "
+ << (int)connect_reply.flags << " features "
+ << connect_reply.features << dendl;
+
+ if (connect_reply.authorizer_len) {
+ return wait_connect_reply_auth();
+ }
+
+ return handle_connect_reply_2();
+}
+
+CtPtr ProtocolV1::wait_connect_reply_auth() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ ldout(cct, 10) << __func__
+ << " reply.authorizer_len=" << connect_reply.authorizer_len
+ << dendl;
+
+ ceph_assert(connect_reply.authorizer_len < 4096);
+
+ return READ(connect_reply.authorizer_len, handle_connect_reply_auth);
+}
+
+CtPtr ProtocolV1::handle_connect_reply_auth(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read connect reply authorizer failed"
+ << dendl;
+ return _fault();
+ }
+
+ bufferlist authorizer_reply;
+ authorizer_reply.append(buffer, connect_reply.authorizer_len);
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_CHALLENGE_AUTHORIZER) {
+ ldout(cct, 10) << __func__ << " connect got auth challenge" << dendl;
+ authorizer->add_challenge(cct, authorizer_reply);
+ return CONTINUE(send_connect_message);
+ }
+
+ auto iter = authorizer_reply.cbegin();
+ if (authorizer && !authorizer->verify_reply(iter)) {
+ ldout(cct, 0) << __func__ << " failed verifying authorize reply" << dendl;
+ return _fault();
+ }
+
+ return handle_connect_reply_2();
+}
+
+CtPtr ProtocolV1::handle_connect_reply_2() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_FEATURES) {
+ ldout(cct, 0) << __func__ << " connect protocol feature mismatch, my "
+ << std::hex << connection->policy.features_supported
+ << " < peer " << connect_reply.features << " missing "
+ << (connect_reply.features &
+ ~connection->policy.features_supported)
+ << std::dec << dendl;
+ return _fault();
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_BADPROTOVER) {
+ ldout(cct, 0) << __func__ << " connect protocol version mismatch, my "
+ << messenger->get_proto_version(connection->peer_type, true)
+ << " != " << connect_reply.protocol_version << dendl;
+ return _fault();
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_BADAUTHORIZER) {
+ ldout(cct, 0) << __func__ << " connect got BADAUTHORIZER" << dendl;
+ if (got_bad_auth) {
+ return _fault();
+ }
+ got_bad_auth = true;
+ delete authorizer;
+ authorizer = messenger->ms_deliver_get_authorizer(connection->peer_type,
+ true); // try harder
+ return CONTINUE(send_connect_message);
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_RESETSESSION) {
+ ldout(cct, 0) << __func__ << " connect got RESETSESSION" << dendl;
+ session_reset();
+ connect_seq = 0;
+
+ // see session_reset
+ connection->outcoming_bl.clear();
+
+ return CONTINUE(send_connect_message);
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_RETRY_GLOBAL) {
+ global_seq = messenger->get_global_seq(connect_reply.global_seq);
+ ldout(cct, 5) << __func__ << " connect got RETRY_GLOBAL "
+ << connect_reply.global_seq << " chose new " << global_seq
+ << dendl;
+ return CONTINUE(send_connect_message);
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_RETRY_SESSION) {
+ ceph_assert(connect_reply.connect_seq > connect_seq);
+ ldout(cct, 5) << __func__ << " connect got RETRY_SESSION " << connect_seq
+ << " -> " << connect_reply.connect_seq << dendl;
+ connect_seq = connect_reply.connect_seq;
+ return CONTINUE(send_connect_message);
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_WAIT) {
+ ldout(cct, 1) << __func__ << " connect got WAIT (connection race)" << dendl;
+ state = WAIT;
+ return _fault();
+ }
+
+ uint64_t feat_missing;
+ feat_missing =
+ connection->policy.features_required & ~(uint64_t)connect_reply.features;
+ if (feat_missing) {
+ ldout(cct, 1) << __func__ << " missing required features " << std::hex
+ << feat_missing << std::dec << dendl;
+ return _fault();
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_SEQ) {
+ ldout(cct, 10)
+ << __func__
+ << " got CEPH_MSGR_TAG_SEQ, reading acked_seq and writing in_seq"
+ << dendl;
+
+ return wait_ack_seq();
+ }
+
+ if (connect_reply.tag == CEPH_MSGR_TAG_READY) {
+ ldout(cct, 10) << __func__ << " got CEPH_MSGR_TAG_READY " << dendl;
+ }
+
+ return client_ready();
+}
+
+CtPtr ProtocolV1::wait_ack_seq() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ return READ(sizeof(uint64_t), handle_ack_seq);
+}
+
+CtPtr ProtocolV1::handle_ack_seq(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read connect ack seq failed" << dendl;
+ return _fault();
+ }
+
+ uint64_t newly_acked_seq = 0;
+
+ newly_acked_seq = *((uint64_t *)buffer);
+ ldout(cct, 2) << __func__ << " got newly_acked_seq " << newly_acked_seq
+ << " vs out_seq " << out_seq << dendl;
+ out_seq = discard_requeued_up_to(out_seq, newly_acked_seq);
+
+ bufferlist bl;
+ uint64_t s = in_seq;
+ bl.append((char *)&s, sizeof(s));
+
+ return WRITE(bl, handle_in_seq_write);
+}
+
+CtPtr ProtocolV1::handle_in_seq_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 10) << __func__ << " failed to send in_seq " << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 10) << __func__ << " send in_seq done " << dendl;
+
+ return client_ready();
+}
+
+CtPtr ProtocolV1::client_ready() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ // hooray!
+ peer_global_seq = connect_reply.global_seq;
+ connection->policy.lossy = connect_reply.flags & CEPH_MSG_CONNECT_LOSSY;
+
+ once_ready = true;
+ connect_seq += 1;
+ ceph_assert(connect_seq == connect_reply.connect_seq);
+ backoff = utime_t();
+ connection->set_features((uint64_t)connect_reply.features &
+ (uint64_t)connection->policy.features_supported);
+ ldout(cct, 10) << __func__ << " connect success " << connect_seq
+ << ", lossy = " << connection->policy.lossy << ", features "
+ << connection->get_features() << dendl;
+
+ // If we have an authorizer, get a new AuthSessionHandler to deal with
+ // ongoing security of the connection. PLR
+ if (authorizer != NULL) {
+ ldout(cct, 10) << __func__ << " setting up session_security with auth "
+ << authorizer << dendl;
+ session_security.reset(get_auth_session_handler(
+ cct, authorizer->protocol, authorizer->session_key,
+ connection->get_features()));
+ } else {
+ // We have no authorizer, so we shouldn't be applying security to messages
+ // in this AsyncConnection. PLR
+ ldout(cct, 10) << __func__ << " no authorizer, clearing session_security"
+ << dendl;
+ session_security.reset();
+ }
+
+ if (connection->delay_state) {
+ ceph_assert(connection->delay_state->ready());
+ }
+ connection->dispatch_queue->queue_connect(connection);
+ messenger->ms_deliver_handle_fast_connect(connection);
+
+ return ready();
+}
+
+/**
+ * Server Protocol V1
+ **/
+
+CtPtr ProtocolV1::send_server_banner() {
+ ldout(cct, 20) << __func__ << dendl;
+ state = ACCEPTING;
+
+ bufferlist bl;
+
+ bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
+
+ auto legacy = messenger->get_myaddrs().legacy_addr();
+ encode(legacy, bl, 0); // legacy
+ connection->port = legacy.get_port();
+ encode(connection->target_addr, bl, 0); // legacy
+
+ ldout(cct, 1) << __func__ << " sd=" << connection->cs.fd()
+ << " legacy " << legacy
+ << " socket_addr " << connection->socket_addr
+ << " target_addr " << connection->target_addr
+ << dendl;
+
+ return WRITE(bl, handle_server_banner_write);
+}
+
+CtPtr ProtocolV1::handle_server_banner_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << " write server banner failed" << dendl;
+ return _fault();
+ }
+ ldout(cct, 10) << __func__ << " write banner and addr done: "
+ << connection->get_peer_addr() << dendl;
+
+ return wait_client_banner();
+}
+
+CtPtr ProtocolV1::wait_client_banner() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ return READ(strlen(CEPH_BANNER) + sizeof(ceph_entity_addr),
+ handle_client_banner);
+}
+
+CtPtr ProtocolV1::handle_client_banner(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read peer banner and addr failed" << dendl;
+ return _fault();
+ }
+
+ if (memcmp(buffer, CEPH_BANNER, strlen(CEPH_BANNER))) {
+ ldout(cct, 1) << __func__ << " accept peer sent bad banner '" << buffer
+ << "' (should be '" << CEPH_BANNER << "')" << dendl;
+ return _fault();
+ }
+
+ bufferlist addr_bl;
+ entity_addr_t peer_addr;
+
+ addr_bl.append(buffer + strlen(CEPH_BANNER), sizeof(ceph_entity_addr));
+ try {
+ auto ti = addr_bl.cbegin();
+ decode(peer_addr, ti);
+ } catch (const buffer::error &e) {
+ lderr(cct) << __func__ << " decode peer_addr failed " << dendl;
+ return _fault();
+ }
+
+ ldout(cct, 10) << __func__ << " accept peer addr is " << peer_addr << dendl;
+ if (peer_addr.is_blank_ip()) {
+ // peer apparently doesn't know what ip they have; figure it out for them.
+ int port = peer_addr.get_port();
+ peer_addr.u = connection->target_addr.u;
+ peer_addr.set_port(port);
+
+ ldout(cct, 0) << __func__ << " accept peer addr is really " << peer_addr
+ << " (socket is " << connection->socket_addr << ")" << dendl;
+ }
+ connection->set_peer_addr(peer_addr); // so that connection_state gets set up
+ connection->target_addr = peer_addr;
+
+ return CONTINUE(wait_connect_message);
+}
+
+CtPtr ProtocolV1::wait_connect_message() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ memset(&connect_msg, 0, sizeof(connect_msg));
+ return READ(sizeof(connect_msg), handle_connect_message_1);
+}
+
+CtPtr ProtocolV1::handle_connect_message_1(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read connect msg failed" << dendl;
+ return _fault();
+ }
+
+ connect_msg = *((ceph_msg_connect *)buffer);
+
+ state = ACCEPTING_WAIT_CONNECT_MSG_AUTH;
+
+ if (connect_msg.authorizer_len) {
+ return wait_connect_message_auth();
+ }
+
+ return handle_connect_message_2();
+}
+
+CtPtr ProtocolV1::wait_connect_message_auth() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ if (!authorizer_buf.length()) {
+ authorizer_buf.push_back(buffer::create(connect_msg.authorizer_len));
+ }
+ return READB(connect_msg.authorizer_len, authorizer_buf.c_str(),
+ handle_connect_message_auth);
+}
+
+CtPtr ProtocolV1::handle_connect_message_auth(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read connect authorizer failed" << dendl;
+ return _fault();
+ }
+
+ return handle_connect_message_2();
+}
+
+CtPtr ProtocolV1::handle_connect_message_2() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ ldout(cct, 20) << __func__ << " accept got peer connect_seq "
+ << connect_msg.connect_seq << " global_seq "
+ << connect_msg.global_seq << dendl;
+
+ connection->set_peer_type(connect_msg.host_type);
+ connection->policy = messenger->get_policy(connect_msg.host_type);
+
+ ldout(cct, 10) << __func__ << " accept of host_type " << connect_msg.host_type
+ << ", policy.lossy=" << connection->policy.lossy
+ << " policy.server=" << connection->policy.server
+ << " policy.standby=" << connection->policy.standby
+ << " policy.resetcheck=" << connection->policy.resetcheck
+ << dendl;
+
+ ceph_msg_connect_reply reply;
+ bufferlist authorizer_reply;
+
+ memset(&reply, 0, sizeof(reply));
+ reply.protocol_version =
+ messenger->get_proto_version(connection->peer_type, false);
+
+ // mismatch?
+ ldout(cct, 10) << __func__ << " accept my proto " << reply.protocol_version
+ << ", their proto " << connect_msg.protocol_version << dendl;
+
+ if (connect_msg.protocol_version != reply.protocol_version) {
+ return send_connect_message_reply(CEPH_MSGR_TAG_BADPROTOVER, reply,
+ authorizer_reply);
+ }
+
+ // require signatures for cephx?
+ if (connect_msg.authorizer_protocol == CEPH_AUTH_CEPHX) {
+ if (connection->peer_type == CEPH_ENTITY_TYPE_OSD ||
+ connection->peer_type == CEPH_ENTITY_TYPE_MDS) {
+ if (cct->_conf->cephx_require_signatures ||
+ cct->_conf->cephx_cluster_require_signatures) {
+ ldout(cct, 10)
+ << __func__
+ << " using cephx, requiring MSG_AUTH feature bit for cluster"
+ << dendl;
+ connection->policy.features_required |= CEPH_FEATURE_MSG_AUTH;
+ }
+ } else {
+ if (cct->_conf->cephx_require_signatures ||
+ cct->_conf->cephx_service_require_signatures) {
+ ldout(cct, 10)
+ << __func__
+ << " using cephx, requiring MSG_AUTH feature bit for service"
+ << dendl;
+ connection->policy.features_required |= CEPH_FEATURE_MSG_AUTH;
+ }
+ }
+ }
+
+ uint64_t feat_missing =
+ connection->policy.features_required & ~(uint64_t)connect_msg.features;
+ if (feat_missing) {
+ ldout(cct, 1) << __func__ << " peer missing required features " << std::hex
+ << feat_missing << std::dec << dendl;
+ return send_connect_message_reply(CEPH_MSGR_TAG_FEATURES, reply,
+ authorizer_reply);
+ }
+
+ connection->lock.unlock();
+ ldout(cct,10) << __func__ << " authorizor_protocol "
+ << connect_msg.authorizer_protocol
+ << " len " << authorizer_buf.length()
+ << dendl;
+ bool authorizer_valid;
+ bool need_challenge = HAVE_FEATURE(connect_msg.features, CEPHX_V2);
+ bool had_challenge = (bool)authorizer_challenge;
+ if (!messenger->ms_deliver_verify_authorizer(
+ connection, connection->peer_type, connect_msg.authorizer_protocol,
+ authorizer_buf, authorizer_reply, authorizer_valid, session_key,
+ need_challenge ? &authorizer_challenge : nullptr) ||
+ !authorizer_valid) {
+ connection->lock.lock();
+
+ if (need_challenge && !had_challenge && authorizer_challenge) {
+ ldout(cct, 10) << __func__ << ": challenging authorizer" << dendl;
+ ceph_assert(authorizer_reply.length());
+ return send_connect_message_reply(CEPH_MSGR_TAG_CHALLENGE_AUTHORIZER,
+ reply, authorizer_reply);
+ } else {
+ ldout(cct, 0) << __func__ << ": got bad authorizer, auth_reply_len="
+ << authorizer_reply.length() << dendl;
+ session_security.reset();
+ return send_connect_message_reply(CEPH_MSGR_TAG_BADAUTHORIZER, reply,
+ authorizer_reply);
+ }
+ }
+
+ // We've verified the authorizer for this AsyncConnection, so set up the
+ // session security structure. PLR
+ ldout(cct, 10) << __func__ << " accept setting up session_security." << dendl;
+
+ // existing?
+ AsyncConnectionRef existing = messenger->lookup_conn(connection->peer_addrs);
+
+ connection->inject_delay();
+
+ connection->lock.lock();
+ if (state != ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
+ ldout(cct, 1) << __func__
+ << " state changed while accept, it must be mark_down"
+ << dendl;
+ ceph_assert(state == CLOSED);
+ return _fault();
+ }
+
+ if (existing == connection) {
+ existing = nullptr;
+ }
+
+ if (existing) {
+ // There is no possible that existing connection will acquire this
+ // connection's lock
+ existing->lock.lock(); // skip lockdep check (we are locking a second
+ // AsyncConnection here)
+
+ ProtocolV1 *exproto = dynamic_cast<ProtocolV1 *>(existing->protocol.get());
+
+ if (!exproto) {
+ ldout(cct, 1) << __func__ << " existing=" << existing << dendl;
+ ceph_assert(false);
+ }
+
+ if (exproto->state == CLOSED) {
+ ldout(cct, 1) << __func__ << " existing " << existing
+ << " already closed." << dendl;
+ existing->lock.unlock();
+ existing = nullptr;
+
+ return open(reply, authorizer_reply);
+ }
+
+ if (exproto->replacing) {
+ ldout(cct, 1) << __func__
+ << " existing racing replace happened while replacing."
+ << " existing_state="
+ << connection->get_state_name(existing->state) << dendl;
+ reply.global_seq = exproto->peer_global_seq;
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_GLOBAL, reply,
+ authorizer_reply);
+ }
+
+ if (connect_msg.global_seq < exproto->peer_global_seq) {
+ ldout(cct, 10) << __func__ << " accept existing " << existing << ".gseq "
+ << exproto->peer_global_seq << " > "
+ << connect_msg.global_seq << ", RETRY_GLOBAL" << dendl;
+ reply.global_seq = exproto->peer_global_seq; // so we can send it below..
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_GLOBAL, reply,
+ authorizer_reply);
+ } else {
+ ldout(cct, 10) << __func__ << " accept existing " << existing << ".gseq "
+ << exproto->peer_global_seq
+ << " <= " << connect_msg.global_seq << ", looks ok"
+ << dendl;
+ }
+
+ if (existing->policy.lossy) {
+ ldout(cct, 0)
+ << __func__
+ << " accept replacing existing (lossy) channel (new one lossy="
+ << connection->policy.lossy << ")" << dendl;
+ exproto->session_reset();
+ return replace(existing, reply, authorizer_reply);
+ }
+
+ ldout(cct, 1) << __func__ << " accept connect_seq "
+ << connect_msg.connect_seq
+ << " vs existing csq=" << exproto->connect_seq
+ << " existing_state="
+ << connection->get_state_name(existing->state) << dendl;
+
+ if (connect_msg.connect_seq == 0 && exproto->connect_seq > 0) {
+ ldout(cct, 0)
+ << __func__
+ << " accept peer reset, then tried to connect to us, replacing"
+ << dendl;
+ // this is a hard reset from peer
+ is_reset_from_peer = true;
+ if (connection->policy.resetcheck) {
+ exproto->session_reset(); // this resets out_queue, msg_ and
+ // connect_seq #'s
+ }
+ return replace(existing, reply, authorizer_reply);
+ }
+
+ if (connect_msg.connect_seq < exproto->connect_seq) {
+ // old attempt, or we sent READY but they didn't get it.
+ ldout(cct, 10) << __func__ << " accept existing " << existing << ".cseq "
+ << exproto->connect_seq << " > " << connect_msg.connect_seq
+ << ", RETRY_SESSION" << dendl;
+ reply.connect_seq = exproto->connect_seq + 1;
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_SESSION, reply,
+ authorizer_reply);
+ }
+
+ if (connect_msg.connect_seq == exproto->connect_seq) {
+ // if the existing connection successfully opened, and/or
+ // subsequently went to standby, then the peer should bump
+ // their connect_seq and retry: this is not a connection race
+ // we need to resolve here.
+ if (exproto->state == OPENED || exproto->state == STANDBY) {
+ ldout(cct, 10) << __func__ << " accept connection race, existing "
+ << existing << ".cseq " << exproto->connect_seq
+ << " == " << connect_msg.connect_seq
+ << ", OPEN|STANDBY, RETRY_SESSION " << dendl;
+ // if connect_seq both zero, dont stuck into dead lock. it's ok to
+ // replace
+ if (connection->policy.resetcheck && exproto->connect_seq == 0) {
+ return replace(existing, reply, authorizer_reply);
+ }
+
+ reply.connect_seq = exproto->connect_seq + 1;
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_RETRY_SESSION, reply,
+ authorizer_reply);
+ }
+
+ // connection race?
+ if (connection->peer_addrs.legacy_addr() < messenger->get_myaddr() ||
+ existing->policy.server) {
+ // incoming wins
+ ldout(cct, 10) << __func__ << " accept connection race, existing "
+ << existing << ".cseq " << exproto->connect_seq
+ << " == " << connect_msg.connect_seq
+ << ", or we are server, replacing my attempt" << dendl;
+ return replace(existing, reply, authorizer_reply);
+ } else {
+ // our existing outgoing wins
+ ldout(messenger->cct, 10)
+ << __func__ << " accept connection race, existing " << existing
+ << ".cseq " << exproto->connect_seq
+ << " == " << connect_msg.connect_seq << ", sending WAIT" << dendl;
+ ceph_assert(connection->peer_addrs.legacy_addr() >
+ messenger->get_myaddr());
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_WAIT, reply,
+ authorizer_reply);
+ }
+ }
+
+ ceph_assert(connect_msg.connect_seq > exproto->connect_seq);
+ ceph_assert(connect_msg.global_seq >= exproto->peer_global_seq);
+ if (connection->policy.resetcheck && // RESETSESSION only used by servers;
+ // peers do not reset each other
+ exproto->connect_seq == 0) {
+ ldout(cct, 0) << __func__ << " accept we reset (peer sent cseq "
+ << connect_msg.connect_seq << ", " << existing
+ << ".cseq = " << exproto->connect_seq
+ << "), sending RESETSESSION " << dendl;
+ existing->lock.unlock();
+ return send_connect_message_reply(CEPH_MSGR_TAG_RESETSESSION, reply,
+ authorizer_reply);
+ }
+
+ // reconnect
+ ldout(cct, 10) << __func__ << " accept peer sent cseq "
+ << connect_msg.connect_seq << " > " << exproto->connect_seq
+ << dendl;
+ return replace(existing, reply, authorizer_reply);
+ } // existing
+ else if (!replacing && connect_msg.connect_seq > 0) {
+ // we reset, and they are opening a new session
+ ldout(cct, 0) << __func__ << " accept we reset (peer sent cseq "
+ << connect_msg.connect_seq << "), sending RESETSESSION"
+ << dendl;
+ return send_connect_message_reply(CEPH_MSGR_TAG_RESETSESSION, reply,
+ authorizer_reply);
+ } else {
+ // new session
+ ldout(cct, 10) << __func__ << " accept new session" << dendl;
+ existing = nullptr;
+ return open(reply, authorizer_reply);
+ }
+}
+
+CtPtr ProtocolV1::send_connect_message_reply(char tag,
+ ceph_msg_connect_reply &reply,
+ bufferlist &authorizer_reply) {
+ ldout(cct, 20) << __func__ << dendl;
+ bufferlist reply_bl;
+ reply.tag = tag;
+ reply.features =
+ ((uint64_t)connect_msg.features & connection->policy.features_supported) |
+ connection->policy.features_required;
+ reply.authorizer_len = authorizer_reply.length();
+ reply_bl.append((char *)&reply, sizeof(reply));
+
+ if (reply.authorizer_len) {
+ reply_bl.append(authorizer_reply.c_str(), authorizer_reply.length());
+ authorizer_reply.clear();
+ }
+
+ return WRITE(reply_bl, handle_connect_message_reply_write);
+}
+
+CtPtr ProtocolV1::handle_connect_message_reply_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << " write connect message reply failed" << dendl;
+ connection->inject_delay();
+ return _fault();
+ }
+
+ return CONTINUE(wait_connect_message);
+}
+
+CtPtr ProtocolV1::replace(AsyncConnectionRef existing,
+ ceph_msg_connect_reply &reply,
+ bufferlist &authorizer_reply) {
+ ldout(cct, 10) << __func__ << " accept replacing " << existing << dendl;
+
+ connection->inject_delay();
+ if (existing->policy.lossy) {
+ // disconnect from the Connection
+ ldout(cct, 1) << __func__ << " replacing on lossy channel, failing existing"
+ << dendl;
+ existing->protocol->stop();
+ existing->dispatch_queue->queue_reset(existing.get());
+ } else {
+ ceph_assert(can_write == WriteStatus::NOWRITE);
+ existing->write_lock.lock();
+
+ ProtocolV1 *exproto = dynamic_cast<ProtocolV1 *>(existing->protocol.get());
+
+ // reset the in_seq if this is a hard reset from peer,
+ // otherwise we respect our original connection's value
+ if (is_reset_from_peer) {
+ exproto->is_reset_from_peer = true;
+ }
+
+ connection->center->delete_file_event(connection->cs.fd(),
+ EVENT_READABLE | EVENT_WRITABLE);
+
+ if (existing->delay_state) {
+ existing->delay_state->flush();
+ ceph_assert(!connection->delay_state);
+ }
+ exproto->reset_recv_state();
+
+ auto temp_cs = std::move(connection->cs);
+ EventCenter *new_center = connection->center;
+ Worker *new_worker = connection->worker;
+ // avoid _stop shutdown replacing socket
+ // queue a reset on the new connection, which we're dumping for the old
+ stop();
+
+ connection->dispatch_queue->queue_reset(connection);
+ ldout(messenger->cct, 1)
+ << __func__ << " stop myself to swap existing" << dendl;
+ exproto->can_write = WriteStatus::REPLACING;
+ exproto->replacing = true;
+ existing->state_offset = 0;
+ // avoid previous thread modify event
+ exproto->state = NONE;
+ existing->state = AsyncConnection::STATE_NONE;
+ // Discard existing prefetch buffer in `recv_buf`
+ existing->recv_start = existing->recv_end = 0;
+ // there shouldn't exist any buffer
+ ceph_assert(connection->recv_start == connection->recv_end);
+
+ exproto->authorizer_challenge.reset();
+
+ auto deactivate_existing = std::bind(
+ [existing, new_worker, new_center, exproto, reply,
+ authorizer_reply](ConnectedSocket &cs) mutable {
+ // we need to delete time event in original thread
+ {
+ std::lock_guard<std::mutex> l(existing->lock);
+ existing->write_lock.lock();
+ exproto->requeue_sent();
+ existing->outcoming_bl.clear();
+ existing->open_write = false;
+ existing->write_lock.unlock();
+ if (exproto->state == NONE) {
+ existing->shutdown_socket();
+ existing->cs = std::move(cs);
+ existing->worker->references--;
+ new_worker->references++;
+ existing->logger = new_worker->get_perf_counter();
+ existing->worker = new_worker;
+ existing->center = new_center;
+ if (existing->delay_state)
+ existing->delay_state->set_center(new_center);
+ } else if (exproto->state == CLOSED) {
+ auto back_to_close =
+ std::bind([](ConnectedSocket &cs) mutable { cs.close(); },
+ std::move(cs));
+ new_center->submit_to(new_center->get_id(),
+ std::move(back_to_close), true);
+ return;
+ } else {
+ ceph_abort();
+ }
+ }
+
+ // Before changing existing->center, it may already exists some
+ // events in existing->center's queue. Then if we mark down
+ // `existing`, it will execute in another thread and clean up
+ // connection. Previous event will result in segment fault
+ auto transfer_existing = [existing, exproto, reply,
+ authorizer_reply]() mutable {
+ std::lock_guard<std::mutex> l(existing->lock);
+ if (exproto->state == CLOSED) return;
+ ceph_assert(exproto->state == NONE);
+
+ existing->state = AsyncConnection::STATE_CONNECTION_ESTABLISHED;
+ exproto->state = ACCEPTING;
+
+ existing->center->create_file_event(
+ existing->cs.fd(), EVENT_READABLE, existing->read_handler);
+ reply.global_seq = exproto->peer_global_seq;
+ exproto->run_continuation(exproto->send_connect_message_reply(
+ CEPH_MSGR_TAG_RETRY_GLOBAL, reply, authorizer_reply));
+ };
+ if (existing->center->in_thread())
+ transfer_existing();
+ else
+ existing->center->submit_to(existing->center->get_id(),
+ std::move(transfer_existing), true);
+ },
+ std::move(temp_cs));
+
+ existing->center->submit_to(existing->center->get_id(),
+ std::move(deactivate_existing), true);
+ existing->write_lock.unlock();
+ existing->lock.unlock();
+ return nullptr;
+ }
+ existing->lock.unlock();
+
+ return open(reply, authorizer_reply);
+}
+
+CtPtr ProtocolV1::open(ceph_msg_connect_reply &reply,
+ bufferlist &authorizer_reply) {
+ ldout(cct, 20) << __func__ << dendl;
+
+ connect_seq = connect_msg.connect_seq + 1;
+ peer_global_seq = connect_msg.global_seq;
+ ldout(cct, 10) << __func__ << " accept success, connect_seq = " << connect_seq
+ << " in_seq=" << in_seq << ", sending READY" << dendl;
+
+ // if it is a hard reset from peer, we don't need a round-trip to negotiate
+ // in/out sequence
+ if ((connect_msg.features & CEPH_FEATURE_RECONNECT_SEQ) &&
+ !is_reset_from_peer) {
+ reply.tag = CEPH_MSGR_TAG_SEQ;
+ wait_for_seq = true;
+ } else {
+ reply.tag = CEPH_MSGR_TAG_READY;
+ wait_for_seq = false;
+ out_seq = discard_requeued_up_to(out_seq, 0);
+ is_reset_from_peer = false;
+ in_seq = 0;
+ }
+
+ // send READY reply
+ reply.features = connection->policy.features_supported;
+ reply.global_seq = messenger->get_global_seq();
+ reply.connect_seq = connect_seq;
+ reply.flags = 0;
+ reply.authorizer_len = authorizer_reply.length();
+ if (connection->policy.lossy) {
+ reply.flags = reply.flags | CEPH_MSG_CONNECT_LOSSY;
+ }
+
+ connection->set_features((uint64_t)reply.features &
+ (uint64_t)connect_msg.features);
+ ldout(cct, 10) << __func__ << " accept features "
+ << connection->get_features()
+ << " authorizer_protocol "
+ << connect_msg.authorizer_protocol << dendl;
+
+ session_security.reset(
+ get_auth_session_handler(cct, connect_msg.authorizer_protocol,
+ session_key, connection->get_features()));
+
+ bufferlist reply_bl;
+ reply_bl.append((char *)&reply, sizeof(reply));
+
+ if (reply.authorizer_len) {
+ reply_bl.append(authorizer_reply.c_str(), authorizer_reply.length());
+ }
+
+ if (reply.tag == CEPH_MSGR_TAG_SEQ) {
+ uint64_t s = in_seq;
+ reply_bl.append((char *)&s, sizeof(s));
+ }
+
+ connection->lock.unlock();
+ // Because "replacing" will prevent other connections preempt this addr,
+ // it's safe that here we don't acquire Connection's lock
+ ssize_t r = messenger->accept_conn(connection);
+
+ connection->inject_delay();
+
+ connection->lock.lock();
+ replacing = false;
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " existing race replacing process for addr = "
+ << connection->peer_addrs.legacy_addr()
+ << " just fail later one(this)" << dendl;
+ ldout(cct, 10) << "accept fault after register" << dendl;
+ connection->inject_delay();
+ return _fault();
+ }
+ if (state != ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
+ ldout(cct, 1) << __func__
+ << " state changed while accept_conn, it must be mark_down"
+ << dendl;
+ ceph_assert(state == CLOSED || state == NONE);
+ ldout(cct, 10) << "accept fault after register" << dendl;
+ connection->inject_delay();
+ return _fault();
+ }
+
+ return WRITE(reply_bl, handle_ready_connect_message_reply_write);
+}
+
+CtPtr ProtocolV1::handle_ready_connect_message_reply_write(int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " write ready connect message reply failed"
+ << dendl;
+ return _fault();
+ }
+
+ // notify
+ connection->dispatch_queue->queue_accept(connection);
+ messenger->ms_deliver_handle_fast_accept(connection);
+ once_ready = true;
+
+ state = ACCEPTING_HANDLED_CONNECT_MSG;
+
+ if (wait_for_seq) {
+ return wait_seq();
+ }
+
+ return server_ready();
+}
+
+CtPtr ProtocolV1::wait_seq() {
+ ldout(cct, 20) << __func__ << dendl;
+
+ return READ(sizeof(uint64_t), handle_seq);
+}
+
+CtPtr ProtocolV1::handle_seq(char *buffer, int r) {
+ ldout(cct, 20) << __func__ << " r=" << r << dendl;
+
+ if (r < 0) {
+ ldout(cct, 1) << __func__ << " read ack seq failed" << dendl;
+ return _fault();
+ }
+
+ uint64_t newly_acked_seq = *(uint64_t *)buffer;
+ ldout(cct, 2) << __func__ << " accept get newly_acked_seq " << newly_acked_seq
+ << dendl;
+ out_seq = discard_requeued_up_to(out_seq, newly_acked_seq);
+
+ return server_ready();
+}
+
+CtPtr ProtocolV1::server_ready() {
+ ldout(cct, 20) << __func__ << " session_security is "
+ << session_security
+ << dendl;
+
+ ldout(cct, 20) << __func__ << " accept done" << dendl;
+ memset(&connect_msg, 0, sizeof(connect_msg));
+
+ if (connection->delay_state) {
+ ceph_assert(connection->delay_state->ready());
+ }
+
+ return ready();
+}
--- /dev/null
+#ifndef _MSG_ASYNC_PROTOCOL_V1_
+#define _MSG_ASYNC_PROTOCOL_V1_
+
+#include "Protocol.h"
+
+class ProtocolV1;
+using CtPtr = Ct<ProtocolV1>*;
+
+class ProtocolV1 : public Protocol {
+/*
+ * ProtocolV1 State Machine
+ *
+
+ send_server_banner send_client_banner
+ | |
+ v v
+ wait_client_banner wait_server_banner
+ | |
+ | v
+ v handle_server_banner_and_identify
+ wait_connect_message <---------\ |
+ | | | v
+ | wait_connect_message_auth | send_connect_message <----------\
+ | | | | |
+ v v | | |
+handle_connect_message_2 | v |
+ | | | wait_connect_reply |
+ v v | | | |
+ replace -> send_connect_message_reply | V |
+ | | wait_connect_reply_auth |
+ | | | |
+ v v v |
+ open ---\ handle_connect_reply_2 --------/
+ | | |
+ | v v
+ | wait_seq wait_ack_seq
+ | | |
+ v v v
+ server_ready client_ready
+ | |
+ \------------------> wait_message <------------/
+ | ^ | ^
+ /------------------------/ | | |
+ | | | \----------------- ------------\
+ v /----------/ v |
+handle_keepalive2 | handle_message_header read_message_footer
+handle_keepalive2_ack | | ^
+handle_tag_ack | v |
+ | | throttle_message read_message_data
+ \----------------/ | ^
+ v |
+ read_message_front --> read_message_middle --/
+*/
+
+protected:
+
+ enum State {
+ NONE = 0,
+ START_CONNECT,
+ CONNECTING,
+ CONNECTING_WAIT_BANNER_AND_IDENTIFY,
+ CONNECTING_SEND_CONNECT_MSG,
+ START_ACCEPT,
+ ACCEPTING,
+ ACCEPTING_WAIT_CONNECT_MSG_AUTH,
+ ACCEPTING_HANDLED_CONNECT_MSG,
+ OPENED,
+ THROTTLE_MESSAGE,
+ THROTTLE_BYTES,
+ THROTTLE_DISPATCH_QUEUE,
+ READ_MESSAGE_FRONT,
+ READ_FOOTER_AND_DISPATCH,
+ CLOSED,
+ WAIT,
+ STANDBY
+ };
+
+ static const char *get_state_name(int state) {
+ const char *const statenames[] = {"NONE",
+ "START_CONNECT",
+ "CONNECTING",
+ "CONNECTING_WAIT_BANNER_AND_IDENTIFY",
+ "CONNECTING_SEND_CONNECT_MSG",
+ "START_ACCEPT",
+ "ACCEPTING",
+ "ACCEPTING_WAIT_CONNECT_MSG_AUTH",
+ "ACCEPTING_HANDLED_CONNECT_MSG",
+ "OPENED",
+ "THROTTLE_MESSAGE",
+ "THROTTLE_BYTES",
+ "THROTTLE_DISPATCH_QUEUE",
+ "READ_MESSAGE_FRONT",
+ "READ_FOOTER_AND_DISPATCH",
+ "CLOSED",
+ "WAIT",
+ "STANDBY"};
+ return statenames[state];
+ }
+
+ char *temp_buffer;
+
+ enum class WriteStatus { NOWRITE, REPLACING, CANWRITE, CLOSED };
+ std::atomic<WriteStatus> can_write;
+ std::list<Message *> sent; // the first bufferlist need to inject seq
+ // priority queue for outbound msgs
+ std::map<int, std::list<std::pair<bufferlist, Message *>>> out_q;
+ bool keepalive;
+
+ __u32 connect_seq, peer_global_seq;
+ std::atomic<uint64_t> in_seq{0};
+ std::atomic<uint64_t> out_seq{0};
+ std::atomic<uint64_t> ack_left{0};
+
+ CryptoKey session_key;
+ std::shared_ptr<AuthSessionHandler> session_security;
+ std::unique_ptr<AuthAuthorizerChallenge> authorizer_challenge; // accept side
+
+ // Open state
+ ceph_msg_connect connect_msg;
+ ceph_msg_connect_reply connect_reply;
+ bufferlist authorizer_buf;
+
+ utime_t backoff; // backoff time
+ utime_t recv_stamp;
+ utime_t throttle_stamp;
+ unsigned msg_left;
+ uint64_t cur_msg_size;
+ ceph_msg_header current_header;
+ bufferlist data_buf;
+ bufferlist::iterator data_blp;
+ bufferlist front, middle, data;
+
+ bool replacing; // when replacing process happened, we will reply connect
+ // side with RETRY tag and accept side will clear replaced
+ // connection. So when connect side reissue connect_msg,
+ // there won't exists conflicting connection so we use
+ // "replacing" to skip RESETSESSION to avoid detect wrong
+ // presentation
+ bool is_reset_from_peer;
+ bool once_ready;
+
+ State state;
+
+ void run_continuation(CtPtr continuation);
+ CtPtr read(CONTINUATION_PARAM(next, ProtocolV1, char *, int), int len,
+ char *buffer = nullptr);
+ CtPtr write(CONTINUATION_PARAM(next, ProtocolV1, int), bufferlist &bl);
+ inline CtPtr _fault() { // helper fault method that stops continuation
+ fault();
+ return nullptr;
+ }
+
+ CONTINUATION_DECL(ProtocolV1, wait_message);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_keepalive2);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_keepalive2_ack);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_tag_ack);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_header);
+ CONTINUATION_DECL(ProtocolV1, throttle_message);
+ CONTINUATION_DECL(ProtocolV1, throttle_bytes);
+ CONTINUATION_DECL(ProtocolV1, throttle_dispatch_queue);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_front);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_middle);
+ CONTINUATION_DECL(ProtocolV1, read_message_data);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_data);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_message_footer);
+
+ CtPtr ready();
+ CtPtr wait_message();
+ CtPtr handle_message(char *buffer, int r);
+
+ CtPtr handle_keepalive2(char *buffer, int r);
+ void append_keepalive_or_ack(bool ack = false, utime_t *t = nullptr);
+ CtPtr handle_keepalive2_ack(char *buffer, int r);
+ CtPtr handle_tag_ack(char *buffer, int r);
+
+ CtPtr handle_message_header(char *buffer, int r);
+ CtPtr throttle_message();
+ CtPtr throttle_bytes();
+ CtPtr throttle_dispatch_queue();
+ CtPtr read_message_front();
+ CtPtr handle_message_front(char *buffer, int r);
+ CtPtr read_message_middle();
+ CtPtr handle_message_middle(char *buffer, int r);
+ CtPtr read_message_data_prepare();
+ CtPtr read_message_data();
+ CtPtr handle_message_data(char *buffer, int r);
+ CtPtr read_message_footer();
+ CtPtr handle_message_footer(char *buffer, int r);
+
+ void session_reset();
+ void randomize_out_seq();
+
+ Message *_get_next_outgoing(bufferlist *bl);
+
+ void prepare_send_message(uint64_t features, Message *m, bufferlist &bl);
+ ssize_t write_message(Message *m, bufferlist &bl, bool more);
+
+ void requeue_sent();
+ uint64_t discard_requeued_up_to(uint64_t out_seq, uint64_t seq);
+ void discard_out_queue();
+
+ void reset_recv_state();
+
+ ostream &_conn_prefix(std::ostream *_dout);
+
+public:
+ ProtocolV1(AsyncConnection *connection);
+ virtual ~ProtocolV1();
+
+ virtual void connect() override;
+ virtual void accept() override;
+ virtual bool is_connected() override;
+ virtual void stop() override;
+ virtual void fault() override;
+ virtual void send_message(Message *m) override;
+ virtual void send_keepalive() override;
+
+ virtual void read_event() override;
+ virtual void write_event() override;
+ virtual bool is_queued() override;
+
+ // Client Protocol
+private:
+ int global_seq;
+ bool got_bad_auth;
+ AuthAuthorizer *authorizer;
+
+ CONTINUATION_DECL(ProtocolV1, send_client_banner);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_client_banner_write);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_server_banner_and_identify);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_my_addr_write);
+ CONTINUATION_DECL(ProtocolV1, send_connect_message);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_write);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_reply_1);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_reply_auth);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_ack_seq);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_in_seq_write);
+
+ CtPtr send_client_banner();
+ CtPtr handle_client_banner_write(int r);
+ CtPtr wait_server_banner();
+ CtPtr handle_server_banner_and_identify(char *buffer, int r);
+ CtPtr handle_my_addr_write(int r);
+ CtPtr send_connect_message();
+ CtPtr handle_connect_message_write(int r);
+ CtPtr wait_connect_reply();
+ CtPtr handle_connect_reply_1(char *buffer, int r);
+ CtPtr wait_connect_reply_auth();
+ CtPtr handle_connect_reply_auth(char *buffer, int r);
+ CtPtr handle_connect_reply_2();
+ CtPtr wait_ack_seq();
+ CtPtr handle_ack_seq(char *buffer, int r);
+ CtPtr handle_in_seq_write(int r);
+ CtPtr client_ready();
+
+ // Server Protocol
+protected:
+ bool wait_for_seq;
+
+ CONTINUATION_DECL(ProtocolV1, send_server_banner);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_server_banner_write);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_client_banner);
+ CONTINUATION_DECL(ProtocolV1, wait_connect_message);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_1);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_connect_message_auth);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1,
+ handle_connect_message_reply_write);
+ WRITE_HANDLER_CONTINUATION_DECL(ProtocolV1,
+ handle_ready_connect_message_reply_write);
+ READ_HANDLER_CONTINUATION_DECL(ProtocolV1, handle_seq);
+
+ CtPtr send_server_banner();
+ CtPtr handle_server_banner_write(int r);
+ CtPtr wait_client_banner();
+ CtPtr handle_client_banner(char *buffer, int r);
+ CtPtr wait_connect_message();
+ CtPtr handle_connect_message_1(char *buffer, int r);
+ CtPtr wait_connect_message_auth();
+ CtPtr handle_connect_message_auth(char *buffer, int r);
+ CtPtr handle_connect_message_2();
+ CtPtr send_connect_message_reply(char tag, ceph_msg_connect_reply &reply,
+ bufferlist &authorizer_reply);
+ CtPtr handle_connect_message_reply_write(int r);
+ CtPtr replace(AsyncConnectionRef existing, ceph_msg_connect_reply &reply,
+ bufferlist &authorizer_reply);
+ CtPtr open(ceph_msg_connect_reply &reply, bufferlist &authorizer_reply);
+ CtPtr handle_ready_connect_message_reply_write(int r);
+ CtPtr wait_seq();
+ CtPtr handle_seq(char *buffer, int r);
+ CtPtr server_ready();
+};
+
+class LoopbackProtocolV1 : public ProtocolV1 {
+public:
+ LoopbackProtocolV1(AsyncConnection *connection) : ProtocolV1(connection) {
+ this->can_write = WriteStatus::CANWRITE;
+ }
+};
+
+#endif /* _MSG_ASYNC_PROTOCOL_V1_ */
\ No newline at end of file
projects / ceph.git / commitdiff