+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2014 UnitedStack <haomai@unitedstack.com>
- *
- * Author: Haomai Wang <haomaiwang@gmail.com>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation. See file COPYING.
- *
- */
-
-#include <unistd.h>
-
-#include "include/Context.h"
-#include "common/errno.h"
-#include "AsyncMessenger.h"
-#include "AsyncConnection.h"
-
-#include "messages/MOSDOp.h"
-#include "messages/MOSDOpReply.h"
-#include "common/EventTrace.h"
-
-// Constant to limit starting sequence number to 2^31. Nothing special about it, just a big number. PLR
-#define SEQ_MASK 0x7fffffff
-
-#define dout_subsys ceph_subsys_ms
-#undef dout_prefix
-#define dout_prefix _conn_prefix(_dout)
-ostream& AsyncConnection::_conn_prefix(std::ostream *_dout) {
- return *_dout << "-- " << async_msgr->get_myinst().addr << " >> " << peer_addr << " conn(" << this
- << " :" << port
- << " s=" << get_state_name(state)
- << " pgs=" << peer_global_seq
- << " cs=" << connect_seq
- << " l=" << policy.lossy
- << ").";
-}
-
-// Notes:
-// 1. Don't dispatch any event when closed! It may cause AsyncConnection alive even if AsyncMessenger dead
-
-const int AsyncConnection::TCP_PREFETCH_MIN_SIZE = 512;
-const int ASYNC_COALESCE_THRESHOLD = 256;
-
-class C_time_wakeup : public EventCallback {
- AsyncConnectionRef conn;
-
- public:
- explicit C_time_wakeup(AsyncConnectionRef c): conn(c) {}
- void do_request(int fd_or_id) override {
- conn->wakeup_from(fd_or_id);
- }
-};
-
-class C_handle_read : public EventCallback {
- AsyncConnectionRef conn;
-
- public:
- explicit C_handle_read(AsyncConnectionRef c): conn(c) {}
- void do_request(int fd_or_id) override {
- conn->process();
- }
-};
-
-class C_handle_write : public EventCallback {
- AsyncConnectionRef conn;
-
- public:
- explicit C_handle_write(AsyncConnectionRef c): conn(c) {}
- void do_request(int fd) override {
- conn->handle_write();
- }
-};
-
-class C_clean_handler : public EventCallback {
- AsyncConnectionRef conn;
- public:
- explicit C_clean_handler(AsyncConnectionRef c): conn(c) {}
- void do_request(int id) override {
- conn->cleanup();
- delete this;
- }
-};
-
-class C_tick_wakeup : public EventCallback {
- AsyncConnectionRef conn;
-
- public:
- explicit C_tick_wakeup(AsyncConnectionRef c): conn(c) {}
- void do_request(int fd_or_id) override {
- conn->tick(fd_or_id);
- }
-};
-
-static void alloc_aligned_buffer(bufferlist& data, unsigned len, unsigned off)
-{
- // create a buffer to read into that matches the data alignment
- unsigned left = len;
- if (off & ~CEPH_PAGE_MASK) {
- // head
- unsigned head = 0;
- head = MIN(CEPH_PAGE_SIZE - (off & ~CEPH_PAGE_MASK), left);
- data.push_back(buffer::create(head));
- left -= head;
- }
- unsigned middle = left & CEPH_PAGE_MASK;
- if (middle > 0) {
- data.push_back(buffer::create_page_aligned(middle));
- left -= middle;
- }
- if (left) {
- data.push_back(buffer::create(left));
- }
-}
-
-AsyncConnection::AsyncConnection(CephContext *cct, AsyncMessenger *m, DispatchQueue *q,
- Worker *w)
- : Connection(cct, m), delay_state(NULL), async_msgr(m), conn_id(q->get_id()),
- logger(w->get_perf_counter()), global_seq(0), connect_seq(0), peer_global_seq(0),
- state(STATE_NONE), state_after_send(STATE_NONE), port(-1),
- dispatch_queue(q), can_write(WriteStatus::NOWRITE),
- keepalive(false), recv_buf(NULL),
- recv_max_prefetch(MAX(msgr->cct->_conf->ms_tcp_prefetch_max_size, TCP_PREFETCH_MIN_SIZE)),
- recv_start(0), recv_end(0),
- last_active(ceph::coarse_mono_clock::now()),
- inactive_timeout_us(cct->_conf->ms_tcp_read_timeout*1000*1000),
- got_bad_auth(false), authorizer(NULL), replacing(false),
- is_reset_from_peer(false), once_ready(false), state_buffer(NULL), state_offset(0),
- worker(w), center(&w->center)
-{
- read_handler = new C_handle_read(this);
- write_handler = new C_handle_write(this);
- wakeup_handler = new C_time_wakeup(this);
- tick_handler = new C_tick_wakeup(this);
- memset(msgvec, 0, sizeof(msgvec));
- // double recv_max_prefetch see "read_until"
- recv_buf = new char[2*recv_max_prefetch];
- state_buffer = new char[4096];
- logger->inc(l_msgr_created_connections);
-}
-
-AsyncConnection::~AsyncConnection()
-{
- assert(out_q.empty());
- assert(sent.empty());
- delete authorizer;
- if (recv_buf)
- delete[] recv_buf;
- if (state_buffer)
- delete[] state_buffer;
- assert(!delay_state);
-}
-
-void AsyncConnection::maybe_start_delay_thread()
-{
- if (!delay_state) {
- auto pos = async_msgr->cct->_conf->get_val<std::string>("ms_inject_delay_type").find(ceph_entity_type_name(peer_type));
- if (pos != string::npos) {
- ldout(msgr->cct, 1) << __func__ << " setting up a delay queue" << dendl;
- delay_state = new DelayedDelivery(async_msgr, center, dispatch_queue, conn_id);
- }
- }
-}
-
-/* return -1 means `fd` occurs error or closed, it should be closed
- * return 0 means EAGAIN or EINTR */
-ssize_t AsyncConnection::read_bulk(char *buf, unsigned len)
-{
- ssize_t nread;
- again:
- nread = cs.read(buf, len);
- if (nread < 0) {
- if (nread == -EAGAIN) {
- nread = 0;
- } else if (nread == -EINTR) {
- goto again;
- } else {
- ldout(async_msgr->cct, 1) << __func__ << " reading from fd=" << cs.fd()
- << " : "<< strerror(nread) << dendl;
- return -1;
- }
- } else if (nread == 0) {
- ldout(async_msgr->cct, 1) << __func__ << " peer close file descriptor "
- << cs.fd() << dendl;
- return -1;
- }
- return nread;
-}
-
-// return the remaining bytes, it may larger than the length of ptr
-// else return < 0 means error
-ssize_t AsyncConnection::_try_send(bool more)
-{
- if (async_msgr->cct->_conf->ms_inject_socket_failures && cs) {
- if (rand() % async_msgr->cct->_conf->ms_inject_socket_failures == 0) {
- ldout(async_msgr->cct, 0) << __func__ << " injecting socket failure" << dendl;
- cs.shutdown();
- }
- }
-
- assert(center->in_thread());
- ssize_t r = cs.send(outcoming_bl, more);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " send error: " << cpp_strerror(r) << dendl;
- return r;
- }
-
- ldout(async_msgr->cct, 10) << __func__ << " sent bytes " << r
- << " remaining bytes " << outcoming_bl.length() << dendl;
-
- if (!open_write && is_queued()) {
- center->create_file_event(cs.fd(), EVENT_WRITABLE, write_handler);
- open_write = true;
- }
-
- if (open_write && !is_queued()) {
- center->delete_file_event(cs.fd(), EVENT_WRITABLE);
- open_write = false;
- if (state_after_send != STATE_NONE)
- center->dispatch_event_external(read_handler);
- }
-
- return outcoming_bl.length();
-}
-
-// Because this func will be called multi times to populate
-// the needed buffer, so the passed in bufferptr must be the same.
-// Normally, only "read_message" will pass existing bufferptr in
-//
-// And it will uses readahead method to reduce small read overhead,
-// "recv_buf" is used to store read buffer
-//
-// return the remaining bytes, 0 means this buffer is finished
-// else return < 0 means error
-ssize_t AsyncConnection::read_until(unsigned len, char *p)
-{
- ldout(async_msgr->cct, 25) << __func__ << " len is " << len << " state_offset is "
- << state_offset << dendl;
-
- if (async_msgr->cct->_conf->ms_inject_socket_failures && cs) {
- if (rand() % async_msgr->cct->_conf->ms_inject_socket_failures == 0) {
- ldout(async_msgr->cct, 0) << __func__ << " injecting socket failure" << dendl;
- cs.shutdown();
- }
- }
-
- ssize_t r = 0;
- uint64_t left = len - state_offset;
- if (recv_end > recv_start) {
- uint64_t to_read = MIN(recv_end - recv_start, left);
- memcpy(p, recv_buf+recv_start, to_read);
- recv_start += to_read;
- left -= to_read;
- ldout(async_msgr->cct, 25) << __func__ << " got " << to_read << " in buffer "
- << " left is " << left << " buffer still has "
- << recv_end - recv_start << dendl;
- if (left == 0) {
- return 0;
- }
- state_offset += to_read;
- }
-
- recv_end = recv_start = 0;
- /* nothing left in the prefetch buffer */
- if (len > recv_max_prefetch) {
- /* this was a large read, we don't prefetch for these */
- do {
- r = read_bulk(p+state_offset, left);
- ldout(async_msgr->cct, 25) << __func__ << " read_bulk left is " << left << " got " << r << dendl;
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read failed" << dendl;
- return -1;
- } else if (r == static_cast<int>(left)) {
- state_offset = 0;
- return 0;
- }
- state_offset += r;
- left -= r;
- } while (r > 0);
- } else {
- do {
- r = read_bulk(recv_buf+recv_end, recv_max_prefetch);
- ldout(async_msgr->cct, 25) << __func__ << " read_bulk recv_end is " << recv_end
- << " left is " << left << " got " << r << dendl;
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read failed" << dendl;
- return -1;
- }
- recv_end += r;
- if (r >= static_cast<int>(left)) {
- recv_start = len - state_offset;
- memcpy(p+state_offset, recv_buf, recv_start);
- state_offset = 0;
- return 0;
- }
- left -= r;
- } while (r > 0);
- memcpy(p+state_offset, recv_buf, recv_end-recv_start);
- state_offset += (recv_end - recv_start);
- recv_end = recv_start = 0;
- }
- ldout(async_msgr->cct, 25) << __func__ << " need len " << len << " remaining "
- << len - state_offset << " bytes" << dendl;
- return len - state_offset;
-}
-
-void AsyncConnection::inject_delay() {
- if (async_msgr->cct->_conf->ms_inject_internal_delays) {
- ldout(async_msgr->cct, 10) << __func__ << " sleep for " <<
- async_msgr->cct->_conf->ms_inject_internal_delays << dendl;
- utime_t t;
- t.set_from_double(async_msgr->cct->_conf->ms_inject_internal_delays);
- t.sleep();
- }
-}
-
-void AsyncConnection::process()
-{
- ssize_t r = 0;
- int prev_state = state;
-#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
- utime_t ltt_recv_stamp = ceph_clock_now();
-#endif
- bool need_dispatch_writer = false;
- std::lock_guard<std::mutex> l(lock);
- last_active = ceph::coarse_mono_clock::now();
- auto recv_start_time = ceph::mono_clock::now();
- do {
- ldout(async_msgr->cct, 20) << __func__ << " prev state is " << get_state_name(prev_state) << dendl;
- prev_state = state;
- switch (state) {
- case STATE_OPEN:
- {
- char tag = -1;
- r = read_until(sizeof(tag), &tag);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read tag failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- if (tag == CEPH_MSGR_TAG_KEEPALIVE) {
- ldout(async_msgr->cct, 20) << __func__ << " got KEEPALIVE" << dendl;
- set_last_keepalive(ceph_clock_now());
- } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2) {
- state = STATE_OPEN_KEEPALIVE2;
- } else if (tag == CEPH_MSGR_TAG_KEEPALIVE2_ACK) {
- state = STATE_OPEN_KEEPALIVE2_ACK;
- } else if (tag == CEPH_MSGR_TAG_ACK) {
- state = STATE_OPEN_TAG_ACK;
- } else if (tag == CEPH_MSGR_TAG_MSG) {
- state = STATE_OPEN_MESSAGE_HEADER;
- } else if (tag == CEPH_MSGR_TAG_CLOSE) {
- state = STATE_OPEN_TAG_CLOSE;
- } else {
- ldout(async_msgr->cct, 0) << __func__ << " bad tag " << (int)tag << dendl;
- goto fail;
- }
-
- break;
- }
-
- case STATE_OPEN_KEEPALIVE2:
- {
- ceph_timespec *t;
- r = read_until(sizeof(*t), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- ldout(async_msgr->cct, 30) << __func__ << " got KEEPALIVE2 tag ..." << dendl;
- t = (ceph_timespec*)state_buffer;
- utime_t kp_t = utime_t(*t);
- write_lock.lock();
- _append_keepalive_or_ack(true, &kp_t);
- write_lock.unlock();
- ldout(async_msgr->cct, 20) << __func__ << " got KEEPALIVE2 " << kp_t << dendl;
- set_last_keepalive(ceph_clock_now());
- need_dispatch_writer = true;
- state = STATE_OPEN;
- break;
- }
-
- case STATE_OPEN_KEEPALIVE2_ACK:
- {
- ceph_timespec *t;
- r = read_until(sizeof(*t), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read keeplive timespec failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- t = (ceph_timespec*)state_buffer;
- set_last_keepalive_ack(utime_t(*t));
- ldout(async_msgr->cct, 20) << __func__ << " got KEEPALIVE_ACK" << dendl;
- state = STATE_OPEN;
- break;
- }
-
- case STATE_OPEN_TAG_ACK:
- {
- ceph_le64 *seq;
- r = read_until(sizeof(*seq), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read ack seq failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- seq = (ceph_le64*)state_buffer;
- ldout(async_msgr->cct, 20) << __func__ << " got ACK" << dendl;
- handle_ack(*seq);
- state = STATE_OPEN;
- break;
- }
-
- case STATE_OPEN_MESSAGE_HEADER:
- {
-#if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
- ltt_recv_stamp = ceph_clock_now();
-#endif
- recv_stamp = ceph_clock_now();
- ldout(async_msgr->cct, 20) << __func__ << " begin MSG" << dendl;
- ceph_msg_header header;
- ceph_msg_header_old oldheader;
- __u32 header_crc = 0;
- unsigned len;
- if (has_feature(CEPH_FEATURE_NOSRCADDR))
- len = sizeof(header);
- else
- len = sizeof(oldheader);
-
- r = read_until(len, state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read message header failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- ldout(async_msgr->cct, 20) << __func__ << " got MSG header" << dendl;
-
- if (has_feature(CEPH_FEATURE_NOSRCADDR)) {
- header = *((ceph_msg_header*)state_buffer);
- if (msgr->crcflags & MSG_CRC_HEADER)
- header_crc = ceph_crc32c(0, (unsigned char *)&header,
- sizeof(header) - sizeof(header.crc));
- } else {
- oldheader = *((ceph_msg_header_old*)state_buffer);
- // this is fugly
- memcpy(&header, &oldheader, sizeof(header));
- header.src = oldheader.src.name;
- header.reserved = oldheader.reserved;
- if (msgr->crcflags & MSG_CRC_HEADER) {
- header.crc = oldheader.crc;
- header_crc = ceph_crc32c(0, (unsigned char *)&oldheader, sizeof(oldheader) - sizeof(oldheader.crc));
- }
- }
-
- ldout(async_msgr->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;
-
- // verify header crc
- if (msgr->crcflags & MSG_CRC_HEADER && header_crc != header.crc) {
- ldout(async_msgr->cct,0) << __func__ << " got bad header crc "
- << header_crc << " != " << header.crc << dendl;
- goto fail;
- }
-
- // Reset state
- data_buf.clear();
- front.clear();
- middle.clear();
- data.clear();
- current_header = header;
- state = STATE_OPEN_MESSAGE_THROTTLE_MESSAGE;
- break;
- }
-
- case STATE_OPEN_MESSAGE_THROTTLE_MESSAGE:
- {
- if (policy.throttler_messages) {
- ldout(async_msgr->cct, 10) << __func__ << " wants " << 1 << " message from policy throttler "
- << policy.throttler_messages->get_current() << "/"
- << policy.throttler_messages->get_max() << dendl;
- if (!policy.throttler_messages->get_or_fail()) {
- ldout(async_msgr->cct, 10) << __func__ << " wants 1 message from policy throttle "
- << policy.throttler_messages->get_current() << "/"
- << 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 (register_time_events.empty())
- register_time_events.insert(center->create_time_event(1000, wakeup_handler));
- break;
- }
- }
-
- state = STATE_OPEN_MESSAGE_THROTTLE_BYTES;
- break;
- }
-
- case STATE_OPEN_MESSAGE_THROTTLE_BYTES:
- {
- cur_msg_size = current_header.front_len + current_header.middle_len + current_header.data_len;
- if (cur_msg_size) {
- if (policy.throttler_bytes) {
- ldout(async_msgr->cct, 10) << __func__ << " wants " << cur_msg_size << " bytes from policy throttler "
- << policy.throttler_bytes->get_current() << "/"
- << policy.throttler_bytes->get_max() << dendl;
- if (!policy.throttler_bytes->get_or_fail(cur_msg_size)) {
- ldout(async_msgr->cct, 10) << __func__ << " wants " << cur_msg_size << " bytes from policy throttler "
- << policy.throttler_bytes->get_current() << "/"
- << 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 (register_time_events.empty())
- register_time_events.insert(center->create_time_event(1000, wakeup_handler));
- break;
- }
- }
- }
-
- state = STATE_OPEN_MESSAGE_THROTTLE_DISPATCH_QUEUE;
- break;
- }
-
- case STATE_OPEN_MESSAGE_THROTTLE_DISPATCH_QUEUE:
- {
- if (cur_msg_size) {
- if (!dispatch_queue->dispatch_throttler.get_or_fail(cur_msg_size)) {
- ldout(async_msgr->cct, 10) << __func__ << " wants " << cur_msg_size << " bytes from dispatch throttle "
- << dispatch_queue->dispatch_throttler.get_current() << "/"
- << 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 (register_time_events.empty())
- register_time_events.insert(center->create_time_event(1000, wakeup_handler));
- break;
- }
- }
-
- throttle_stamp = ceph_clock_now();
- state = STATE_OPEN_MESSAGE_READ_FRONT;
- break;
- }
-
- case STATE_OPEN_MESSAGE_READ_FRONT:
- {
- // read front
- unsigned front_len = current_header.front_len;
- if (front_len) {
- if (!front.length())
- front.push_back(buffer::create(front_len));
-
- r = read_until(front_len, front.c_str());
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read message front failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- ldout(async_msgr->cct, 20) << __func__ << " got front " << front.length() << dendl;
- }
- state = STATE_OPEN_MESSAGE_READ_MIDDLE;
- }
-
- case STATE_OPEN_MESSAGE_READ_MIDDLE:
- {
- // read middle
- unsigned middle_len = current_header.middle_len;
- if (middle_len) {
- if (!middle.length())
- middle.push_back(buffer::create(middle_len));
-
- r = read_until(middle_len, middle.c_str());
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read message middle failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
- ldout(async_msgr->cct, 20) << __func__ << " got middle " << middle.length() << dendl;
- }
-
- state = STATE_OPEN_MESSAGE_READ_DATA_PREPARE;
- }
-
- case STATE_OPEN_MESSAGE_READ_DATA_PREPARE:
- {
- // read data
- 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 = rx_buffers.find(current_header.tid);
- if (p != rx_buffers.end()) {
- ldout(async_msgr->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(async_msgr->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;
- state = STATE_OPEN_MESSAGE_READ_DATA;
- }
-
- case STATE_OPEN_MESSAGE_READ_DATA:
- {
- while (msg_left > 0) {
- bufferptr bp = data_blp.get_current_ptr();
- unsigned read = MIN(bp.length(), msg_left);
- r = read_until(read, bp.c_str());
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read data error " << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- data_blp.advance(read);
- data.append(bp, 0, read);
- msg_left -= read;
- }
-
- if (msg_left > 0)
- break;
-
- state = STATE_OPEN_MESSAGE_READ_FOOTER_AND_DISPATCH;
- }
-
- case STATE_OPEN_MESSAGE_READ_FOOTER_AND_DISPATCH:
- {
- ceph_msg_footer footer;
- ceph_msg_footer_old old_footer;
- unsigned len;
- // footer
- if (has_feature(CEPH_FEATURE_MSG_AUTH))
- len = sizeof(footer);
- else
- len = sizeof(old_footer);
-
- r = read_until(len, state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read footer data error " << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- if (has_feature(CEPH_FEATURE_MSG_AUTH)) {
- footer = *((ceph_msg_footer*)state_buffer);
- } else {
- old_footer = *((ceph_msg_footer_old*)state_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(async_msgr->cct, 10) << __func__ << " aborted = " << aborted << dendl;
- if (aborted) {
- ldout(async_msgr->cct, 0) << __func__ << " got " << front.length() << " + " << middle.length() << " + " << data.length()
- << " byte message.. ABORTED" << dendl;
- goto fail;
- }
-
- ldout(async_msgr->cct, 20) << __func__ << " got " << front.length() << " + " << middle.length()
- << " + " << data.length() << " byte message" << dendl;
- Message *message = decode_message(async_msgr->cct, async_msgr->crcflags, current_header, footer,
- front, middle, data, this);
- if (!message) {
- ldout(async_msgr->cct, 1) << __func__ << " decode message failed " << dendl;
- goto fail;
- }
-
- //
- // Check the signature if one should be present. A zero return indicates success. PLR
- //
-
- if (session_security.get() == NULL) {
- ldout(async_msgr->cct, 10) << __func__ << " no session security set" << dendl;
- } else {
- if (session_security->check_message_signature(message)) {
- ldout(async_msgr->cct, 0) << __func__ << " Signature check failed" << dendl;
- message->put();
- goto fail;
- }
- }
- message->set_byte_throttler(policy.throttler_bytes);
- message->set_message_throttler(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(async_msgr->cct,0) << __func__ << " got old message "
- << message->get_seq() << " <= " << cur_seq << " " << message << " " << *message
- << ", discarding" << dendl;
- message->put();
- if (has_feature(CEPH_FEATURE_RECONNECT_SEQ) && async_msgr->cct->_conf->ms_die_on_old_message)
- assert(0 == "old msgs despite reconnect_seq feature");
- break;
- }
- if (message->get_seq() > cur_seq + 1) {
- ldout(async_msgr->cct, 0) << __func__ << " missed message? skipped from seq "
- << cur_seq << " to " << message->get_seq() << dendl;
- if (async_msgr->cct->_conf->ms_die_on_skipped_message)
- assert(0 == "skipped incoming seq");
- }
-
- message->set_connection(this);
-
-#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(async_msgr->cct, 5) << " rx " << message->get_source() << " seq "
- << message->get_seq() << " " << message
- << " " << *message << dendl;
-
- if (!policy.lossy) {
- ack_left++;
- need_dispatch_writer = true;
- }
- state = STATE_OPEN;
-
- logger->inc(l_msgr_recv_messages);
- logger->inc(l_msgr_recv_bytes, cur_msg_size + sizeof(ceph_msg_header) + sizeof(ceph_msg_footer));
-
- async_msgr->ms_fast_preprocess(message);
- auto fast_dispatch_time = ceph::mono_clock::now();
- logger->tinc(l_msgr_running_recv_time, fast_dispatch_time - recv_start_time);
- if (delay_state) {
- utime_t release = message->get_recv_stamp();
- double delay_period = 0;
- if (rand() % 10000 < async_msgr->cct->_conf->ms_inject_delay_probability * 10000.0) {
- delay_period = async_msgr->cct->_conf->ms_inject_delay_max * (double)(rand() % 10000) / 10000.0;
- release += delay_period;
- ldout(async_msgr->cct, 1) << "queue_received will delay until " << release << " on "
- << message << " " << *message << dendl;
- }
- delay_state->queue(delay_period, release, message);
- } else if (async_msgr->ms_can_fast_dispatch(message)) {
- lock.unlock();
- dispatch_queue->fast_dispatch(message);
- recv_start_time = ceph::mono_clock::now();
- logger->tinc(l_msgr_running_fast_dispatch_time,
- recv_start_time - fast_dispatch_time);
- lock.lock();
- } else {
- dispatch_queue->enqueue(message, message->get_priority(), conn_id);
- }
-
- break;
- }
-
- case STATE_OPEN_TAG_CLOSE:
- {
- ldout(async_msgr->cct, 20) << __func__ << " got CLOSE" << dendl;
- _stop();
- return ;
- }
-
- case STATE_STANDBY:
- {
- ldout(async_msgr->cct, 20) << __func__ << " enter STANDY" << dendl;
-
- break;
- }
-
- case STATE_NONE:
- {
- ldout(async_msgr->cct, 20) << __func__ << " enter none state" << dendl;
- break;
- }
-
- case STATE_CLOSED:
- {
- ldout(async_msgr->cct, 20) << __func__ << " socket closed" << dendl;
- break;
- }
-
- case STATE_WAIT:
- {
- ldout(async_msgr->cct, 1) << __func__ << " enter wait state, failing" << dendl;
- goto fail;
- }
-
- default:
- {
- if (_process_connection() < 0)
- goto fail;
- break;
- }
- }
- } while (prev_state != state);
-
- if (need_dispatch_writer && is_connected())
- center->dispatch_event_external(write_handler);
-
- logger->tinc(l_msgr_running_recv_time, ceph::mono_clock::now() - recv_start_time);
- return;
-
- fail:
- fault();
-}
-
-ssize_t AsyncConnection::_process_connection()
-{
- ssize_t r = 0;
-
- switch(state) {
- case STATE_WAIT_SEND:
- {
- std::lock_guard<std::mutex> l(write_lock);
- if (!outcoming_bl.length()) {
- assert(state_after_send);
- state = state_after_send;
- state_after_send = STATE_NONE;
- }
- break;
- }
-
- case STATE_CONNECTING:
- {
- assert(!policy.server);
-
- // reset connect state variables
- got_bad_auth = false;
- delete authorizer;
- authorizer = NULL;
- authorizer_buf.clear();
- memset(&connect_msg, 0, sizeof(connect_msg));
- memset(&connect_reply, 0, sizeof(connect_reply));
-
- global_seq = async_msgr->get_global_seq();
- // close old socket. this is safe because we stopped the reader thread above.
- if (cs) {
- center->delete_file_event(cs.fd(), EVENT_READABLE|EVENT_WRITABLE);
- cs.close();
- }
-
- SocketOptions opts;
- opts.priority = async_msgr->get_socket_priority();
- opts.connect_bind_addr = msgr->get_myaddr();
- r = worker->connect(get_peer_addr(), opts, &cs);
- if (r < 0)
- goto fail;
-
- center->create_file_event(cs.fd(), EVENT_READABLE, read_handler);
- state = STATE_CONNECTING_RE;
- break;
- }
-
- case STATE_CONNECTING_RE:
- {
- r = cs.is_connected();
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " reconnect failed " << dendl;
- if (r == -ECONNREFUSED) {
- ldout(async_msgr->cct, 2) << __func__ << " connection refused!" << dendl;
- dispatch_queue->queue_refused(this);
- }
- goto fail;
- } else if (r == 0) {
- ldout(async_msgr->cct, 10) << __func__ << " nonblock connect inprogress" << dendl;
- if (async_msgr->get_stack()->nonblock_connect_need_writable_event())
- center->create_file_event(cs.fd(), EVENT_WRITABLE, read_handler);
- break;
- }
-
- center->delete_file_event(cs.fd(), EVENT_WRITABLE);
- ldout(async_msgr->cct, 10) << __func__ << " connect successfully, ready to send banner" << dendl;
-
- bufferlist bl;
- bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
- r = try_send(bl);
- if (r == 0) {
- state = STATE_CONNECTING_WAIT_BANNER_AND_IDENTIFY;
- ldout(async_msgr->cct, 10) << __func__ << " connect write banner done: "
- << get_peer_addr() << dendl;
- } else if (r > 0) {
- state = STATE_WAIT_SEND;
- state_after_send = STATE_CONNECTING_WAIT_BANNER_AND_IDENTIFY;
- ldout(async_msgr->cct, 10) << __func__ << " connect wait for write banner: "
- << get_peer_addr() << dendl;
- } else {
- goto fail;
- }
-
- break;
- }
-
- case STATE_CONNECTING_WAIT_BANNER_AND_IDENTIFY:
- {
- entity_addr_t paddr, peer_addr_for_me;
- bufferlist myaddrbl;
- unsigned banner_len = strlen(CEPH_BANNER);
- unsigned need_len = banner_len + sizeof(ceph_entity_addr)*2;
- r = read_until(need_len, state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read banner and identify addresses failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- if (memcmp(state_buffer, CEPH_BANNER, banner_len)) {
- ldout(async_msgr->cct, 0) << __func__ << " connect protocol error (bad banner) on peer "
- << get_peer_addr() << dendl;
- goto fail;
- }
-
- bufferlist bl;
- bl.append(state_buffer+banner_len, sizeof(ceph_entity_addr)*2);
- bufferlist::iterator p = bl.begin();
- try {
- ::decode(paddr, p);
- ::decode(peer_addr_for_me, p);
- } catch (const buffer::error& e) {
- lderr(async_msgr->cct) << __func__ << " decode peer addr failed " << dendl;
- goto fail;
- }
- ldout(async_msgr->cct, 20) << __func__ << " connect read peer addr "
- << paddr << " on socket " << cs.fd() << dendl;
- if (peer_addr != paddr) {
- if (paddr.is_blank_ip() && peer_addr.get_port() == paddr.get_port() &&
- peer_addr.get_nonce() == paddr.get_nonce()) {
- ldout(async_msgr->cct, 0) << __func__ << " connect claims to be " << paddr
- << " not " << peer_addr
- << " - presumably this is the same node!" << dendl;
- } else {
- ldout(async_msgr->cct, 10) << __func__ << " connect claims to be "
- << paddr << " not " << peer_addr << dendl;
- goto fail;
- }
- }
-
- ldout(async_msgr->cct, 20) << __func__ << " connect peer addr for me is " << peer_addr_for_me << dendl;
- lock.unlock();
- async_msgr->learned_addr(peer_addr_for_me);
- if (async_msgr->cct->_conf->ms_inject_internal_delays) {
- if (rand() % async_msgr->cct->_conf->ms_inject_socket_failures == 0) {
- ldout(msgr->cct, 10) << __func__ << " sleep for "
- << async_msgr->cct->_conf->ms_inject_internal_delays << dendl;
- utime_t t;
- t.set_from_double(async_msgr->cct->_conf->ms_inject_internal_delays);
- t.sleep();
- }
- }
-
- lock.lock();
- if (state != STATE_CONNECTING_WAIT_BANNER_AND_IDENTIFY) {
- ldout(async_msgr->cct, 1) << __func__ << " state changed while learned_addr, mark_down or "
- << " replacing must be happened just now" << dendl;
- return 0;
- }
-
- ::encode(async_msgr->get_myaddr(), myaddrbl, 0); // legacy
- r = try_send(myaddrbl);
- if (r == 0) {
- state = STATE_CONNECTING_SEND_CONNECT_MSG;
- ldout(async_msgr->cct, 10) << __func__ << " connect sent my addr "
- << async_msgr->get_myaddr() << dendl;
- } else if (r > 0) {
- state = STATE_WAIT_SEND;
- state_after_send = STATE_CONNECTING_SEND_CONNECT_MSG;
- ldout(async_msgr->cct, 10) << __func__ << " connect send my addr done: "
- << async_msgr->get_myaddr() << dendl;
- } else {
- ldout(async_msgr->cct, 2) << __func__ << " connect couldn't write my addr, "
- << cpp_strerror(r) << dendl;
- goto fail;
- }
-
- break;
- }
-
- case STATE_CONNECTING_SEND_CONNECT_MSG:
- {
- if (!got_bad_auth) {
- delete authorizer;
- authorizer = async_msgr->get_authorizer(peer_type, false);
- }
- bufferlist bl;
-
- connect_msg.features = policy.features_supported;
- connect_msg.host_type = async_msgr->get_myinst().name.type();
- connect_msg.global_seq = global_seq;
- connect_msg.connect_seq = connect_seq;
- connect_msg.protocol_version = async_msgr->get_proto_version(peer_type, true);
- connect_msg.authorizer_protocol = authorizer ? authorizer->protocol : 0;
- connect_msg.authorizer_len = authorizer ? authorizer->bl.length() : 0;
- if (authorizer)
- ldout(async_msgr->cct, 10) << __func__ << " connect_msg.authorizer_len="
- << connect_msg.authorizer_len << " protocol="
- << connect_msg.authorizer_protocol << dendl;
- connect_msg.flags = 0;
- if (policy.lossy)
- connect_msg.flags |= CEPH_MSG_CONNECT_LOSSY; // this is fyi, actually, server decides!
- bl.append((char*)&connect_msg, sizeof(connect_msg));
- if (authorizer) {
- bl.append(authorizer->bl.c_str(), authorizer->bl.length());
- }
- ldout(async_msgr->cct, 10) << __func__ << " connect sending gseq=" << global_seq << " cseq="
- << connect_seq << " proto=" << connect_msg.protocol_version << dendl;
-
- r = try_send(bl);
- if (r == 0) {
- state = STATE_CONNECTING_WAIT_CONNECT_REPLY;
- ldout(async_msgr->cct,20) << __func__ << " connect wrote (self +) cseq, waiting for reply" << dendl;
- } else if (r > 0) {
- state = STATE_WAIT_SEND;
- state_after_send = STATE_CONNECTING_WAIT_CONNECT_REPLY;
- ldout(async_msgr->cct, 10) << __func__ << " continue send reply " << dendl;
- } else {
- ldout(async_msgr->cct, 2) << __func__ << " connect couldn't send reply "
- << cpp_strerror(r) << dendl;
- goto fail;
- }
-
- break;
- }
-
- case STATE_CONNECTING_WAIT_CONNECT_REPLY:
- {
- r = read_until(sizeof(connect_reply), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read connect reply failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- connect_reply = *((ceph_msg_connect_reply*)state_buffer);
-
- ldout(async_msgr->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;
- state = STATE_CONNECTING_WAIT_CONNECT_REPLY_AUTH;
-
- break;
- }
-
- case STATE_CONNECTING_WAIT_CONNECT_REPLY_AUTH:
- {
- bufferlist authorizer_reply;
- if (connect_reply.authorizer_len) {
- ldout(async_msgr->cct, 10) << __func__ << " reply.authorizer_len=" << connect_reply.authorizer_len << dendl;
- assert(connect_reply.authorizer_len < 4096);
- r = read_until(connect_reply.authorizer_len, state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read connect reply authorizer failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- authorizer_reply.append(state_buffer, connect_reply.authorizer_len);
- bufferlist::iterator iter = authorizer_reply.begin();
- if (authorizer && !authorizer->verify_reply(iter)) {
- ldout(async_msgr->cct, 0) << __func__ << " failed verifying authorize reply" << dendl;
- goto fail;
- }
- }
- r = handle_connect_reply(connect_msg, connect_reply);
- if (r < 0)
- goto fail;
-
- // state must be changed!
- assert(state != STATE_CONNECTING_WAIT_CONNECT_REPLY_AUTH);
- break;
- }
-
- case STATE_CONNECTING_WAIT_ACK_SEQ:
- {
- uint64_t newly_acked_seq = 0;
-
- r = read_until(sizeof(newly_acked_seq), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read connect ack seq failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- newly_acked_seq = *((uint64_t*)state_buffer);
- ldout(async_msgr->cct, 2) << __func__ << " got newly_acked_seq " << newly_acked_seq
- << " vs out_seq " << out_seq << dendl;
- discard_requeued_up_to(newly_acked_seq);
- //while (newly_acked_seq > out_seq.read()) {
- // Message *m = _get_next_outgoing(NULL);
- // assert(m);
- // ldout(async_msgr->cct, 2) << __func__ << " discarding previously sent " << m->get_seq()
- // << " " << *m << dendl;
- // assert(m->get_seq() <= newly_acked_seq);
- // m->put();
- // out_seq.inc();
- //}
-
- bufferlist bl;
- uint64_t s = in_seq;
- bl.append((char*)&s, sizeof(s));
- r = try_send(bl);
- if (r == 0) {
- state = STATE_CONNECTING_READY;
- ldout(async_msgr->cct, 10) << __func__ << " send in_seq done " << dendl;
- } else if (r > 0) {
- state_after_send = STATE_CONNECTING_READY;
- state = STATE_WAIT_SEND;
- ldout(async_msgr->cct, 10) << __func__ << " continue send in_seq " << dendl;
- } else {
- goto fail;
- }
- break;
- }
-
- case STATE_CONNECTING_READY:
- {
- // hooray!
- peer_global_seq = connect_reply.global_seq;
- policy.lossy = connect_reply.flags & CEPH_MSG_CONNECT_LOSSY;
- state = STATE_OPEN;
- once_ready = true;
- connect_seq += 1;
- assert(connect_seq == connect_reply.connect_seq);
- backoff = utime_t();
- set_features((uint64_t)connect_reply.features & (uint64_t)connect_msg.features);
- ldout(async_msgr->cct, 10) << __func__ << " connect success " << connect_seq
- << ", lossy = " << policy.lossy << ", features "
- << get_features() << dendl;
-
- // If we have an authorizer, get a new AuthSessionHandler to deal with ongoing security of the
- // connection. PLR
- if (authorizer != NULL) {
- session_security.reset(
- get_auth_session_handler(async_msgr->cct,
- authorizer->protocol,
- authorizer->session_key,
- get_features()));
- } else {
- // We have no authorizer, so we shouldn't be applying security to messages in this AsyncConnection. PLR
- session_security.reset();
- }
-
- if (delay_state)
- assert(delay_state->ready());
- dispatch_queue->queue_connect(this);
- async_msgr->ms_deliver_handle_fast_connect(this);
-
- // make sure no pending tick timer
- if (last_tick_id)
- center->delete_time_event(last_tick_id);
- last_tick_id = center->create_time_event(inactive_timeout_us, tick_handler);
-
- // message may in queue between last _try_send and connection ready
- // write event may already notify and we need to force scheduler again
- write_lock.lock();
- can_write = WriteStatus::CANWRITE;
- if (is_queued())
- center->dispatch_event_external(write_handler);
- write_lock.unlock();
- maybe_start_delay_thread();
- break;
- }
-
- case STATE_ACCEPTING:
- {
- bufferlist bl;
- center->create_file_event(cs.fd(), EVENT_READABLE, read_handler);
-
- bl.append(CEPH_BANNER, strlen(CEPH_BANNER));
-
- ::encode(async_msgr->get_myaddr(), bl, 0); // legacy
- port = async_msgr->get_myaddr().get_port();
- ::encode(socket_addr, bl, 0); // legacy
- ldout(async_msgr->cct, 1) << __func__ << " sd=" << cs.fd() << " " << socket_addr << dendl;
-
- r = try_send(bl);
- if (r == 0) {
- state = STATE_ACCEPTING_WAIT_BANNER_ADDR;
- ldout(async_msgr->cct, 10) << __func__ << " write banner and addr done: "
- << get_peer_addr() << dendl;
- } else if (r > 0) {
- state = STATE_WAIT_SEND;
- state_after_send = STATE_ACCEPTING_WAIT_BANNER_ADDR;
- ldout(async_msgr->cct, 10) << __func__ << " wait for write banner and addr: "
- << get_peer_addr() << dendl;
- } else {
- goto fail;
- }
-
- break;
- }
- case STATE_ACCEPTING_WAIT_BANNER_ADDR:
- {
- bufferlist addr_bl;
- entity_addr_t peer_addr;
-
- r = read_until(strlen(CEPH_BANNER) + sizeof(ceph_entity_addr), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read peer banner and addr failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- if (memcmp(state_buffer, CEPH_BANNER, strlen(CEPH_BANNER))) {
- ldout(async_msgr->cct, 1) << __func__ << " accept peer sent bad banner '" << state_buffer
- << "' (should be '" << CEPH_BANNER << "')" << dendl;
- goto fail;
- }
-
- addr_bl.append(state_buffer+strlen(CEPH_BANNER), sizeof(ceph_entity_addr));
- {
- bufferlist::iterator ti = addr_bl.begin();
- ::decode(peer_addr, ti);
- }
-
- ldout(async_msgr->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 = socket_addr.u;
- peer_addr.set_port(port);
- ldout(async_msgr->cct, 0) << __func__ << " accept peer addr is really " << peer_addr
- << " (socket is " << socket_addr << ")" << dendl;
- }
- set_peer_addr(peer_addr); // so that connection_state gets set up
- state = STATE_ACCEPTING_WAIT_CONNECT_MSG;
- break;
- }
-
- case STATE_ACCEPTING_WAIT_CONNECT_MSG:
- {
- r = read_until(sizeof(connect_msg), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read connect msg failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
-
- connect_msg = *((ceph_msg_connect*)state_buffer);
- state = STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH;
- break;
- }
-
- case STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH:
- {
- bufferlist authorizer_reply;
-
- if (connect_msg.authorizer_len) {
- if (!authorizer_buf.length())
- authorizer_buf.push_back(buffer::create(connect_msg.authorizer_len));
-
- r = read_until(connect_msg.authorizer_len, authorizer_buf.c_str());
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read connect authorizer failed" << dendl;
- goto fail;
- } else if (r > 0) {
- break;
- }
- }
-
- ldout(async_msgr->cct, 20) << __func__ << " accept got peer connect_seq "
- << connect_msg.connect_seq << " global_seq "
- << connect_msg.global_seq << dendl;
- set_peer_type(connect_msg.host_type);
- policy = async_msgr->get_policy(connect_msg.host_type);
- ldout(async_msgr->cct, 10) << __func__ << " accept of host_type " << connect_msg.host_type
- << ", policy.lossy=" << policy.lossy << " policy.server="
- << policy.server << " policy.standby=" << policy.standby
- << " policy.resetcheck=" << policy.resetcheck << dendl;
-
- r = handle_connect_msg(connect_msg, authorizer_buf, authorizer_reply);
- if (r < 0)
- goto fail;
-
- // state is changed by "handle_connect_msg"
- assert(state != STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH);
- break;
- }
-
- case STATE_ACCEPTING_WAIT_SEQ:
- {
- uint64_t newly_acked_seq;
- r = read_until(sizeof(newly_acked_seq), state_buffer);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " read ack seq failed" << dendl;
- goto fail_registered;
- } else if (r > 0) {
- break;
- }
-
- newly_acked_seq = *((uint64_t*)state_buffer);
- ldout(async_msgr->cct, 2) << __func__ << " accept get newly_acked_seq " << newly_acked_seq << dendl;
- discard_requeued_up_to(newly_acked_seq);
- state = STATE_ACCEPTING_READY;
- break;
- }
-
- case STATE_ACCEPTING_READY:
- {
- ldout(async_msgr->cct, 20) << __func__ << " accept done" << dendl;
- state = STATE_OPEN;
- memset(&connect_msg, 0, sizeof(connect_msg));
-
- if (delay_state)
- assert(delay_state->ready());
- // make sure no pending tick timer
- if (last_tick_id)
- center->delete_time_event(last_tick_id);
- last_tick_id = center->create_time_event(inactive_timeout_us, tick_handler);
-
- write_lock.lock();
- can_write = WriteStatus::CANWRITE;
- if (is_queued())
- center->dispatch_event_external(write_handler);
- write_lock.unlock();
- maybe_start_delay_thread();
- break;
- }
-
- default:
- {
- lderr(async_msgr->cct) << __func__ << " bad state: " << state << dendl;
- ceph_abort();
- }
- }
-
- return 0;
-
-fail_registered:
- ldout(async_msgr->cct, 10) << "accept fault after register" << dendl;
- inject_delay();
-
-fail:
- return -1;
-}
-
-int AsyncConnection::handle_connect_reply(ceph_msg_connect &connect, ceph_msg_connect_reply &reply)
-{
- uint64_t feat_missing;
- if (reply.tag == CEPH_MSGR_TAG_FEATURES) {
- ldout(async_msgr->cct, 0) << __func__ << " connect protocol feature mismatch, my "
- << std::hex << connect.features << " < peer "
- << reply.features << " missing "
- << (reply.features & ~policy.features_supported)
- << std::dec << dendl;
- goto fail;
- }
-
- if (reply.tag == CEPH_MSGR_TAG_BADPROTOVER) {
- ldout(async_msgr->cct, 0) << __func__ << " connect protocol version mismatch, my "
- << connect.protocol_version << " != " << reply.protocol_version
- << dendl;
- goto fail;
- }
-
- if (reply.tag == CEPH_MSGR_TAG_BADAUTHORIZER) {
- ldout(async_msgr->cct,0) << __func__ << " connect got BADAUTHORIZER" << dendl;
- if (got_bad_auth)
- goto fail;
- got_bad_auth = true;
- delete authorizer;
- authorizer = async_msgr->get_authorizer(peer_type, true); // try harder
- state = STATE_CONNECTING_SEND_CONNECT_MSG;
- }
- if (reply.tag == CEPH_MSGR_TAG_RESETSESSION) {
- ldout(async_msgr->cct, 0) << __func__ << " connect got RESETSESSION" << dendl;
- was_session_reset();
- // see was_session_reset
- outcoming_bl.clear();
- state = STATE_CONNECTING_SEND_CONNECT_MSG;
- }
- if (reply.tag == CEPH_MSGR_TAG_RETRY_GLOBAL) {
- global_seq = async_msgr->get_global_seq(reply.global_seq);
- ldout(async_msgr->cct, 5) << __func__ << " connect got RETRY_GLOBAL "
- << reply.global_seq << " chose new "
- << global_seq << dendl;
- state = STATE_CONNECTING_SEND_CONNECT_MSG;
- }
- if (reply.tag == CEPH_MSGR_TAG_RETRY_SESSION) {
- assert(reply.connect_seq > connect_seq);
- ldout(async_msgr->cct, 5) << __func__ << " connect got RETRY_SESSION "
- << connect_seq << " -> "
- << reply.connect_seq << dendl;
- connect_seq = reply.connect_seq;
- state = STATE_CONNECTING_SEND_CONNECT_MSG;
- }
- if (reply.tag == CEPH_MSGR_TAG_WAIT) {
- ldout(async_msgr->cct, 1) << __func__ << " connect got WAIT (connection race)" << dendl;
- state = STATE_WAIT;
- }
-
- feat_missing = policy.features_required & ~(uint64_t)connect_reply.features;
- if (feat_missing) {
- ldout(async_msgr->cct, 1) << __func__ << " missing required features " << std::hex
- << feat_missing << std::dec << dendl;
- goto fail;
- }
-
- if (reply.tag == CEPH_MSGR_TAG_SEQ) {
- ldout(async_msgr->cct, 10) << __func__ << " got CEPH_MSGR_TAG_SEQ, reading acked_seq and writing in_seq" << dendl;
- state = STATE_CONNECTING_WAIT_ACK_SEQ;
- }
- if (reply.tag == CEPH_MSGR_TAG_READY) {
- ldout(async_msgr->cct, 10) << __func__ << " got CEPH_MSGR_TAG_READY " << dendl;
- state = STATE_CONNECTING_READY;
- }
-
- return 0;
-
- fail:
- return -1;
-}
-
-ssize_t AsyncConnection::handle_connect_msg(ceph_msg_connect &connect, bufferlist &authorizer_bl,
- bufferlist &authorizer_reply)
-{
- ssize_t r = 0;
- ceph_msg_connect_reply reply;
- bufferlist reply_bl;
-
- memset(&reply, 0, sizeof(reply));
- reply.protocol_version = async_msgr->get_proto_version(peer_type, false);
-
- // mismatch?
- ldout(async_msgr->cct, 10) << __func__ << " accept my proto " << reply.protocol_version
- << ", their proto " << connect.protocol_version << dendl;
- if (connect.protocol_version != reply.protocol_version) {
- return _reply_accept(CEPH_MSGR_TAG_BADPROTOVER, connect, reply, authorizer_reply);
- }
- // require signatures for cephx?
- if (connect.authorizer_protocol == CEPH_AUTH_CEPHX) {
- if (peer_type == CEPH_ENTITY_TYPE_OSD ||
- peer_type == CEPH_ENTITY_TYPE_MDS) {
- if (async_msgr->cct->_conf->cephx_require_signatures ||
- async_msgr->cct->_conf->cephx_cluster_require_signatures) {
- ldout(async_msgr->cct, 10) << __func__ << " using cephx, requiring MSG_AUTH feature bit for cluster" << dendl;
- policy.features_required |= CEPH_FEATURE_MSG_AUTH;
- }
- } else {
- if (async_msgr->cct->_conf->cephx_require_signatures ||
- async_msgr->cct->_conf->cephx_service_require_signatures) {
- ldout(async_msgr->cct, 10) << __func__ << " using cephx, requiring MSG_AUTH feature bit for service" << dendl;
- policy.features_required |= CEPH_FEATURE_MSG_AUTH;
- }
- }
- }
- uint64_t feat_missing = policy.features_required & ~(uint64_t)connect.features;
- if (feat_missing) {
- ldout(async_msgr->cct, 1) << __func__ << " peer missing required features "
- << std::hex << feat_missing << std::dec << dendl;
- return _reply_accept(CEPH_MSGR_TAG_FEATURES, connect, reply, authorizer_reply);
- }
-
- lock.unlock();
-
- bool authorizer_valid;
- if (!async_msgr->verify_authorizer(this, peer_type, connect.authorizer_protocol, authorizer_bl,
- authorizer_reply, authorizer_valid, session_key) || !authorizer_valid) {
- lock.lock();
- ldout(async_msgr->cct,0) << __func__ << ": got bad authorizer" << dendl;
- session_security.reset();
- return _reply_accept(CEPH_MSGR_TAG_BADAUTHORIZER, connect, reply, authorizer_reply);
- }
-
- // We've verified the authorizer for this AsyncConnection, so set up the session security structure. PLR
- ldout(async_msgr->cct, 10) << __func__ << " accept setting up session_security." << dendl;
-
- // existing?
- AsyncConnectionRef existing = async_msgr->lookup_conn(peer_addr);
-
- inject_delay();
-
- lock.lock();
- if (state != STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
- ldout(async_msgr->cct, 1) << __func__ << " state changed while accept, it must be mark_down" << dendl;
- assert(state == STATE_CLOSED);
- goto fail;
- }
-
- if (existing == this)
- existing = NULL;
- 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)
-
- if (existing->state == STATE_CLOSED) {
- ldout(async_msgr->cct, 1) << __func__ << " existing already closed." << dendl;
- existing->lock.unlock();
- existing = NULL;
- goto open;
- }
-
- if (existing->replacing) {
- ldout(async_msgr->cct, 1) << __func__ << " existing racing replace happened while replacing."
- << " existing_state=" << get_state_name(existing->state) << dendl;
- reply.global_seq = existing->peer_global_seq;
- r = _reply_accept(CEPH_MSGR_TAG_RETRY_GLOBAL, connect, reply, authorizer_reply);
- existing->lock.unlock();
- if (r < 0)
- goto fail;
- return 0;
- }
-
- if (connect.global_seq < existing->peer_global_seq) {
- ldout(async_msgr->cct, 10) << __func__ << " accept existing " << existing
- << ".gseq " << existing->peer_global_seq << " > "
- << connect.global_seq << ", RETRY_GLOBAL" << dendl;
- reply.global_seq = existing->peer_global_seq; // so we can send it below..
- existing->lock.unlock();
- return _reply_accept(CEPH_MSGR_TAG_RETRY_GLOBAL, connect, reply, authorizer_reply);
- } else {
- ldout(async_msgr->cct, 10) << __func__ << " accept existing " << existing
- << ".gseq " << existing->peer_global_seq
- << " <= " << connect.global_seq << ", looks ok" << dendl;
- }
-
- if (existing->policy.lossy) {
- ldout(async_msgr->cct, 0) << __func__ << " accept replacing existing (lossy) channel (new one lossy="
- << policy.lossy << ")" << dendl;
- existing->was_session_reset();
- goto replace;
- }
-
- ldout(async_msgr->cct, 0) << __func__ << " accept connect_seq " << connect.connect_seq
- << " vs existing csq=" << existing->connect_seq << " existing_state="
- << get_state_name(existing->state) << dendl;
-
- if (connect.connect_seq == 0 && existing->connect_seq > 0) {
- ldout(async_msgr->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 (policy.resetcheck)
- existing->was_session_reset(); // this resets out_queue, msg_ and connect_seq #'s
- goto replace;
- }
-
- if (connect.connect_seq < existing->connect_seq) {
- // old attempt, or we sent READY but they didn't get it.
- ldout(async_msgr->cct, 10) << __func__ << " accept existing " << existing << ".cseq "
- << existing->connect_seq << " > " << connect.connect_seq
- << ", RETRY_SESSION" << dendl;
- reply.connect_seq = existing->connect_seq + 1;
- existing->lock.unlock();
- return _reply_accept(CEPH_MSGR_TAG_RETRY_SESSION, connect, reply, authorizer_reply);
- }
-
- if (connect.connect_seq == existing->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 (existing->state == STATE_OPEN ||
- existing->state == STATE_STANDBY) {
- ldout(async_msgr->cct, 10) << __func__ << " accept connection race, existing " << existing
- << ".cseq " << existing->connect_seq << " == "
- << connect.connect_seq << ", OPEN|STANDBY, RETRY_SESSION" << dendl;
- reply.connect_seq = existing->connect_seq + 1;
- existing->lock.unlock();
- return _reply_accept(CEPH_MSGR_TAG_RETRY_SESSION, connect, reply, authorizer_reply);
- }
-
- // connection race?
- if (peer_addr < async_msgr->get_myaddr() || existing->policy.server) {
- // incoming wins
- ldout(async_msgr->cct, 10) << __func__ << " accept connection race, existing " << existing
- << ".cseq " << existing->connect_seq << " == " << connect.connect_seq
- << ", or we are server, replacing my attempt" << dendl;
- goto replace;
- } else {
- // our existing outgoing wins
- ldout(async_msgr->cct,10) << __func__ << " accept connection race, existing "
- << existing << ".cseq " << existing->connect_seq
- << " == " << connect.connect_seq << ", sending WAIT" << dendl;
- assert(peer_addr > async_msgr->get_myaddr());
- existing->lock.unlock();
- return _reply_accept(CEPH_MSGR_TAG_WAIT, connect, reply, authorizer_reply);
- }
- }
-
- assert(connect.connect_seq > existing->connect_seq);
- assert(connect.global_seq >= existing->peer_global_seq);
- if (policy.resetcheck && // RESETSESSION only used by servers; peers do not reset each other
- existing->connect_seq == 0) {
- ldout(async_msgr->cct, 0) << __func__ << " accept we reset (peer sent cseq "
- << connect.connect_seq << ", " << existing << ".cseq = "
- << existing->connect_seq << "), sending RESETSESSION" << dendl;
- existing->lock.unlock();
- return _reply_accept(CEPH_MSGR_TAG_RESETSESSION, connect, reply, authorizer_reply);
- }
-
- // reconnect
- ldout(async_msgr->cct, 10) << __func__ << " accept peer sent cseq " << connect.connect_seq
- << " > " << existing->connect_seq << dendl;
- goto replace;
- } // existing
- else if (!replacing && connect.connect_seq > 0) {
- // we reset, and they are opening a new session
- ldout(async_msgr->cct, 0) << __func__ << " accept we reset (peer sent cseq "
- << connect.connect_seq << "), sending RESETSESSION" << dendl;
- return _reply_accept(CEPH_MSGR_TAG_RESETSESSION, connect, reply, authorizer_reply);
- } else {
- // new session
- ldout(async_msgr->cct, 10) << __func__ << " accept new session" << dendl;
- existing = NULL;
- goto open;
- }
- ceph_abort();
-
- replace:
- ldout(async_msgr->cct, 10) << __func__ << " accept replacing " << existing << dendl;
-
- inject_delay();
- if (existing->policy.lossy) {
- // disconnect from the Connection
- ldout(async_msgr->cct, 1) << __func__ << " replacing on lossy channel, failing existing" << dendl;
- existing->_stop();
- existing->dispatch_queue->queue_reset(existing.get());
- } else {
- assert(can_write == WriteStatus::NOWRITE);
- existing->write_lock.lock();
-
- // 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) {
- existing->is_reset_from_peer = true;
- }
-
- center->delete_file_event(cs.fd(), EVENT_READABLE|EVENT_WRITABLE);
-
- if (existing->delay_state) {
- existing->delay_state->flush();
- assert(!delay_state);
- }
- existing->reset_recv_state();
-
- auto temp_cs = std::move(cs);
- EventCenter *new_center = center;
- Worker *new_worker = worker;
- // avoid _stop shutdown replacing socket
- // queue a reset on the new connection, which we're dumping for the old
- _stop();
-
- dispatch_queue->queue_reset(this);
- ldout(async_msgr->cct, 1) << __func__ << " stop myself to swap existing" << dendl;
- existing->can_write = WriteStatus::REPLACING;
- existing->replacing = true;
- existing->state_offset = 0;
- // avoid previous thread modify event
- existing->state = STATE_NONE;
- // Discard existing prefetch buffer in `recv_buf`
- existing->recv_start = existing->recv_end = 0;
- // there shouldn't exist any buffer
- assert(recv_start == recv_end);
-
- auto deactivate_existing = std::bind(
- [existing, new_worker, new_center, connect, 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();
- existing->requeue_sent();
- existing->outcoming_bl.clear();
- existing->open_write = false;
- existing->write_lock.unlock();
- if (existing->state == 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 (existing->state == 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, connect, reply, authorizer_reply]() mutable {
- std::lock_guard<std::mutex> l(existing->lock);
- if (existing->state == STATE_CLOSED)
- return ;
- assert(existing->state == STATE_NONE);
-
- existing->state = STATE_ACCEPTING_WAIT_CONNECT_MSG;
- existing->center->create_file_event(existing->cs.fd(), EVENT_READABLE, existing->read_handler);
- reply.global_seq = existing->peer_global_seq;
- if (existing->_reply_accept(CEPH_MSGR_TAG_RETRY_GLOBAL, connect, reply, authorizer_reply) < 0) {
- // handle error
- existing->fault();
- }
- };
- 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 0;
- }
- existing->lock.unlock();
-
- open:
- connect_seq = connect.connect_seq + 1;
- peer_global_seq = connect.global_seq;
- ldout(async_msgr->cct, 10) << __func__ << " accept success, connect_seq = "
- << connect_seq << " in_seq=" << in_seq << ", sending READY" << dendl;
-
- int next_state;
-
- // if it is a hard reset from peer, we don't need a round-trip to negotiate in/out sequence
- if ((connect.features & CEPH_FEATURE_RECONNECT_SEQ) && !is_reset_from_peer) {
- reply.tag = CEPH_MSGR_TAG_SEQ;
- next_state = STATE_ACCEPTING_WAIT_SEQ;
- } else {
- reply.tag = CEPH_MSGR_TAG_READY;
- next_state = STATE_ACCEPTING_READY;
- discard_requeued_up_to(0);
- is_reset_from_peer = false;
- in_seq = 0;
- }
-
- // send READY reply
- reply.features = policy.features_supported;
- reply.global_seq = async_msgr->get_global_seq();
- reply.connect_seq = connect_seq;
- reply.flags = 0;
- reply.authorizer_len = authorizer_reply.length();
- if (policy.lossy)
- reply.flags = reply.flags | CEPH_MSG_CONNECT_LOSSY;
-
- set_features((uint64_t)reply.features & (uint64_t)connect.features);
- ldout(async_msgr->cct, 10) << __func__ << " accept features " << get_features() << dendl;
-
- session_security.reset(
- get_auth_session_handler(async_msgr->cct, connect.authorizer_protocol,
- session_key, get_features()));
-
- 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));
- }
-
- lock.unlock();
- // Because "replacing" will prevent other connections preempt this addr,
- // it's safe that here we don't acquire Connection's lock
- r = async_msgr->accept_conn(this);
-
- inject_delay();
-
- lock.lock();
- replacing = false;
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " existing race replacing process for addr=" << peer_addr
- << " just fail later one(this)" << dendl;
- goto fail_registered;
- }
- if (state != STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
- ldout(async_msgr->cct, 1) << __func__ << " state changed while accept_conn, it must be mark_down" << dendl;
- assert(state == STATE_CLOSED);
- goto fail_registered;
- }
-
- r = try_send(reply_bl);
- if (r < 0)
- goto fail_registered;
-
- // notify
- dispatch_queue->queue_accept(this);
- async_msgr->ms_deliver_handle_fast_accept(this);
- once_ready = true;
-
- if (r == 0) {
- state = next_state;
- ldout(async_msgr->cct, 2) << __func__ << " accept write reply msg done" << dendl;
- } else {
- state = STATE_WAIT_SEND;
- state_after_send = next_state;
- }
-
- return 0;
-
- fail_registered:
- ldout(async_msgr->cct, 10) << __func__ << " accept fault after register" << dendl;
- inject_delay();
-
- fail:
- ldout(async_msgr->cct, 10) << __func__ << " failed to accept." << dendl;
- return -1;
-}
-
-void AsyncConnection::_connect()
-{
- ldout(async_msgr->cct, 10) << __func__ << " csq=" << connect_seq << dendl;
-
- state = STATE_CONNECTING;
- // rescheduler connection in order to avoid lock dep
- // may called by external thread(send_message)
- center->dispatch_event_external(read_handler);
-}
-
-void AsyncConnection::accept(ConnectedSocket socket, entity_addr_t &addr)
-{
- ldout(async_msgr->cct, 10) << __func__ << " sd=" << socket.fd() << dendl;
- assert(socket.fd() >= 0);
-
- std::lock_guard<std::mutex> l(lock);
- cs = std::move(socket);
- socket_addr = addr;
- state = STATE_ACCEPTING;
- // rescheduler connection in order to avoid lock dep
- center->dispatch_event_external(read_handler);
-}
-
-int AsyncConnection::send_message(Message *m)
-{
- FUNCTRACE();
- lgeneric_subdout(async_msgr->cct, ms,
- 1) << "-- " << async_msgr->get_myaddr() << " --> "
- << get_peer_addr() << " -- "
- << *m << " -- " << m << " con "
- << m->get_connection().get()
- << dendl;
-
- // optimistic think it's ok to encode(actually may broken now)
- if (!m->get_priority())
- m->set_priority(async_msgr->get_default_send_priority());
-
- m->get_header().src = async_msgr->get_myname();
- m->set_connection(this);
-
- if (m->get_type() == CEPH_MSG_OSD_OP)
- OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OP_BEGIN", true);
- else if (m->get_type() == CEPH_MSG_OSD_OPREPLY)
- OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OPREPLY_BEGIN", true);
-
- if (async_msgr->get_myaddr() == get_peer_addr()) { //loopback connection
- ldout(async_msgr->cct, 20) << __func__ << " " << *m << " local" << dendl;
- std::lock_guard<std::mutex> l(write_lock);
- if (can_write != WriteStatus::CLOSED) {
- dispatch_queue->local_delivery(m, m->get_priority());
- } else {
- ldout(async_msgr->cct, 10) << __func__ << " loopback connection closed."
- << " Drop message " << m << dendl;
- m->put();
- }
- return 0;
- }
-
- last_active = ceph::coarse_mono_clock::now();
- // we don't want to consider local message here, it's too lightweight which
- // may disturb users
- logger->inc(l_msgr_send_messages);
-
- bufferlist bl;
- uint64_t f = 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 = async_msgr->ms_can_fast_dispatch(m);
- if (can_fast_prepare)
- prepare_send_message(f, m, bl);
-
- std::lock_guard<std::mutex> l(write_lock);
- // "features" changes will change the payload encoding
- if (can_fast_prepare && (can_write == WriteStatus::NOWRITE || get_features() != f)) {
- // ensure the correctness of message encoding
- bl.clear();
- m->get_payload().clear();
- ldout(async_msgr->cct, 5) << __func__ << " clear encoded buffer previous "
- << f << " != " << get_features() << dendl;
- }
- if (can_write == WriteStatus::CLOSED) {
- ldout(async_msgr->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(async_msgr->cct, 15) << __func__ << " inline write is denied, reschedule m=" << m << dendl;
- if (can_write != WriteStatus::REPLACING)
- center->dispatch_event_external(write_handler);
- }
- return 0;
-}
-
-void AsyncConnection::requeue_sent()
-{
- if (sent.empty())
- return;
-
- list<pair<bufferlist, Message*> >& rq = out_q[CEPH_MSG_PRIO_HIGHEST];
- while (!sent.empty()) {
- Message* m = sent.back();
- sent.pop_back();
- ldout(async_msgr->cct, 10) << __func__ << " " << *m << " for resend "
- << " (" << m->get_seq() << ")" << dendl;
- rq.push_front(make_pair(bufferlist(), m));
- out_seq--;
- }
-}
-
-void AsyncConnection::discard_requeued_up_to(uint64_t seq)
-{
- ldout(async_msgr->cct, 10) << __func__ << " " << seq << dendl;
- std::lock_guard<std::mutex> l(write_lock);
- if (out_q.count(CEPH_MSG_PRIO_HIGHEST) == 0)
- return;
- list<pair<bufferlist, Message*> >& rq = out_q[CEPH_MSG_PRIO_HIGHEST];
- while (!rq.empty()) {
- pair<bufferlist, Message*> p = rq.front();
- if (p.second->get_seq() == 0 || p.second->get_seq() > seq)
- break;
- ldout(async_msgr->cct, 10) << __func__ << " " << *(p.second) << " for resend seq " << p.second->get_seq()
- << " <= " << seq << ", discarding" << dendl;
- p.second->put();
- rq.pop_front();
- out_seq++;
- }
- if (rq.empty())
- out_q.erase(CEPH_MSG_PRIO_HIGHEST);
-}
-
-/*
- * Tears down the AsyncConnection's message queues, and removes them from the DispatchQueue
- * Must hold write_lock prior to calling.
- */
-void AsyncConnection::discard_out_queue()
-{
- ldout(async_msgr->cct, 10) << __func__ << " started" << dendl;
-
- for (list<Message*>::iterator p = sent.begin(); p != sent.end(); ++p) {
- ldout(async_msgr->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(async_msgr->cct, 20) << __func__ << " discard " << r->second << dendl;
- r->second->put();
- }
- out_q.clear();
-}
-
-int AsyncConnection::randomize_out_seq()
-{
- if (get_features() & CEPH_FEATURE_MSG_AUTH) {
- // Set out_seq to a random value, so CRC won't be predictable. Don't bother checking seq_error
- // here. We'll check it on the call. PLR
- uint64_t rand_seq;
- int seq_error = get_random_bytes((char *)&rand_seq, sizeof(rand_seq));
- rand_seq &= SEQ_MASK;
- lsubdout(async_msgr->cct, ms, 10) << __func__ << " randomize_out_seq " << rand_seq << dendl;
- out_seq = rand_seq;
- return seq_error;
- } else {
- // previously, seq #'s always started at 0.
- out_seq = 0;
- return 0;
- }
-}
-
-void AsyncConnection::fault()
-{
- if (state == STATE_CLOSED || state == STATE_NONE) {
- ldout(async_msgr->cct, 10) << __func__ << " connection is already closed" << dendl;
- return ;
- }
-
- if (policy.lossy && !(state >= STATE_CONNECTING && state < STATE_CONNECTING_READY)) {
- ldout(async_msgr->cct, 1) << __func__ << " on lossy channel, failing" << dendl;
- _stop();
- dispatch_queue->queue_reset(this);
- return ;
- }
-
- write_lock.lock();
- can_write = WriteStatus::NOWRITE;
- shutdown_socket();
- open_write = false;
-
- // queue delayed items immediately
- if (delay_state)
- delay_state->flush();
- // requeue sent items
- requeue_sent();
- recv_start = recv_end = 0;
- state_offset = 0;
- replacing = false;
- is_reset_from_peer = false;
- outcoming_bl.clear();
- if (!once_ready && !is_queued() &&
- state >=STATE_ACCEPTING && state <= STATE_ACCEPTING_WAIT_CONNECT_MSG_AUTH) {
- ldout(async_msgr->cct, 10) << __func__ << " with nothing to send and in the half "
- << " accept state just closed" << dendl;
- write_lock.unlock();
- _stop();
- dispatch_queue->queue_reset(this);
- return ;
- }
- reset_recv_state();
- if (policy.standby && !is_queued() && state != STATE_WAIT) {
- ldout(async_msgr->cct, 10) << __func__ << " with nothing to send, going to standby" << dendl;
- state = STATE_STANDBY;
- write_lock.unlock();
- return;
- }
-
- write_lock.unlock();
- if (!(state >= STATE_CONNECTING && state < STATE_CONNECTING_READY) &&
- state != STATE_WAIT) { // STATE_WAIT is coming from STATE_CONNECTING_*
- // policy maybe empty when state is in accept
- if (policy.server) {
- ldout(async_msgr->cct, 0) << __func__ << " server, going to standby" << dendl;
- state = STATE_STANDBY;
- } else {
- ldout(async_msgr->cct, 0) << __func__ << " initiating reconnect" << dendl;
- connect_seq++;
- state = STATE_CONNECTING;
- }
- backoff = utime_t();
- center->dispatch_event_external(read_handler);
- } else {
- if (state == STATE_WAIT) {
- backoff.set_from_double(async_msgr->cct->_conf->ms_max_backoff);
- } else if (backoff == utime_t()) {
- backoff.set_from_double(async_msgr->cct->_conf->ms_initial_backoff);
- } else {
- backoff += backoff;
- if (backoff > async_msgr->cct->_conf->ms_max_backoff)
- backoff.set_from_double(async_msgr->cct->_conf->ms_max_backoff);
- }
-
- state = STATE_CONNECTING;
- ldout(async_msgr->cct, 10) << __func__ << " waiting " << backoff << dendl;
- // woke up again;
- register_time_events.insert(center->create_time_event(
- backoff.to_nsec()/1000, wakeup_handler));
- }
-}
-
-void AsyncConnection::was_session_reset()
-{
- ldout(async_msgr->cct,10) << __func__ << " started" << dendl;
- std::lock_guard<std::mutex> l(write_lock);
- if (delay_state)
- delay_state->discard();
- dispatch_queue->discard_queue(conn_id);
- discard_out_queue();
- // note: we need to clear outcoming_bl here, but was_session_reset may be
- // called by other thread, so let caller clear this itself!
- // outcoming_bl.clear();
-
- dispatch_queue->queue_remote_reset(this);
-
- if (randomize_out_seq()) {
- ldout(async_msgr->cct, 15) << __func__ << " could not get random bytes to set seq number for session reset; set seq number to " << out_seq << dendl;
- }
-
- 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 AsyncConnection::_stop()
-{
- if (state == STATE_CLOSED)
- return ;
-
- if (delay_state)
- delay_state->flush();
-
- ldout(async_msgr->cct, 2) << __func__ << dendl;
- std::lock_guard<std::mutex> l(write_lock);
-
- reset_recv_state();
- dispatch_queue->discard_queue(conn_id);
- discard_out_queue();
- async_msgr->unregister_conn(this);
- worker->release_worker();
-
- state = STATE_CLOSED;
- open_write = false;
- can_write = WriteStatus::CLOSED;
- state_offset = 0;
- // Make sure in-queue events will been processed
- center->dispatch_event_external(EventCallbackRef(new C_clean_handler(this)));
-}
-
-void AsyncConnection::prepare_send_message(uint64_t features, Message *m, bufferlist &bl)
-{
- ldout(async_msgr->cct, 20) << __func__ << " m" << " " << *m << dendl;
-
- // associate message with Connection (for benefit of encode_payload)
- if (m->empty_payload())
- ldout(async_msgr->cct, 20) << __func__ << " encoding features "
- << features << " " << m << " " << *m << dendl;
- else
- ldout(async_msgr->cct, 20) << __func__ << " half-reencoding features "
- << features << " " << m << " " << *m << dendl;
-
- // encode and copy out of *m
- m->encode(features, msgr->crcflags);
-
- bl.append(m->get_payload());
- bl.append(m->get_middle());
- bl.append(m->get_data());
-}
-
-ssize_t AsyncConnection::write_message(Message *m, bufferlist& bl, bool more)
-{
- FUNCTRACE();
- assert(center->in_thread());
- m->set_seq(++out_seq);
-
- if (msgr->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(async_msgr->cct, 20) << __func__ << " no session security" << dendl;
- } else {
- if (session_security->sign_message(m)) {
- ldout(async_msgr->cct, 20) << __func__ << " failed to sign m="
- << m << "): sig = " << footer.sig << dendl;
- } else {
- ldout(async_msgr->cct, 20) << __func__ << " signed m=" << m
- << "): sig = " << footer.sig << dendl;
- }
- }
-
- unsigned original_bl_len = outcoming_bl.length();
-
- outcoming_bl.append(CEPH_MSGR_TAG_MSG);
-
- if (has_feature(CEPH_FEATURE_NOSRCADDR)) {
- outcoming_bl.append((char*)&header, sizeof(header));
- } else {
- ceph_msg_header_old oldheader;
- memcpy(&oldheader, &header, sizeof(header));
- oldheader.src.name = header.src;
- oldheader.src.addr = get_peer_addr();
- oldheader.orig_src = oldheader.src;
- oldheader.reserved = header.reserved;
- oldheader.crc = ceph_crc32c(0, (unsigned char*)&oldheader,
- sizeof(oldheader) - sizeof(oldheader.crc));
- outcoming_bl.append((char*)&oldheader, sizeof(oldheader));
- }
-
- ldout(async_msgr->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()) {
- outcoming_bl.append((char*)pb.c_str(), pb.length());
- }
- } else {
- 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 (has_feature(CEPH_FEATURE_MSG_AUTH)) {
- outcoming_bl.append((char*)&footer, sizeof(footer));
- } else {
- if (msgr->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 = msgr->crcflags & MSG_CRC_DATA ? footer.data_crc : 0;
- old_footer.flags = footer.flags;
- outcoming_bl.append((char*)&old_footer, sizeof(old_footer));
- }
-
- m->trace.event("async writing message");
- ldout(async_msgr->cct, 20) << __func__ << " sending " << m->get_seq()
- << " " << m << dendl;
- ssize_t total_send_size = outcoming_bl.length();
- ssize_t rc = _try_send(more);
- if (rc < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " error sending " << m << ", "
- << cpp_strerror(rc) << dendl;
- } else if (rc == 0) {
- logger->inc(l_msgr_send_bytes, total_send_size - original_bl_len);
- ldout(async_msgr->cct, 10) << __func__ << " sending " << m << " done." << dendl;
- } else {
- logger->inc(l_msgr_send_bytes, total_send_size - outcoming_bl.length());
- ldout(async_msgr->cct, 10) << __func__ << " sending " << m << " continuely." << 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 AsyncConnection::reset_recv_state()
-{
- // clean up state internal variables and states
- if (state >= STATE_CONNECTING_SEND_CONNECT_MSG &&
- state <= STATE_CONNECTING_READY) {
- delete authorizer;
- authorizer = NULL;
- got_bad_auth = false;
- }
-
- if (state > STATE_OPEN_MESSAGE_THROTTLE_MESSAGE &&
- state <= STATE_OPEN_MESSAGE_READ_FOOTER_AND_DISPATCH
- && policy.throttler_messages) {
- ldout(async_msgr->cct, 10) << __func__ << " releasing " << 1
- << " message to policy throttler "
- << policy.throttler_messages->get_current() << "/"
- << policy.throttler_messages->get_max() << dendl;
- policy.throttler_messages->put();
- }
- if (state > STATE_OPEN_MESSAGE_THROTTLE_BYTES &&
- state <= STATE_OPEN_MESSAGE_READ_FOOTER_AND_DISPATCH) {
- if (policy.throttler_bytes) {
- ldout(async_msgr->cct, 10) << __func__ << " releasing " << cur_msg_size
- << " bytes to policy throttler "
- << policy.throttler_bytes->get_current() << "/"
- << policy.throttler_bytes->get_max() << dendl;
- policy.throttler_bytes->put(cur_msg_size);
- }
- }
- if (state > STATE_OPEN_MESSAGE_THROTTLE_DISPATCH_QUEUE &&
- state <= STATE_OPEN_MESSAGE_READ_FOOTER_AND_DISPATCH) {
- ldout(async_msgr->cct, 10) << __func__ << " releasing " << cur_msg_size
- << " bytes to dispatch_queue throttler "
- << dispatch_queue->dispatch_throttler.get_current() << "/"
- << dispatch_queue->dispatch_throttler.get_max() << dendl;
- dispatch_queue->dispatch_throttle_release(cur_msg_size);
- }
-}
-
-void AsyncConnection::handle_ack(uint64_t seq)
-{
- ldout(async_msgr->cct, 15) << __func__ << " got ack seq " << seq << dendl;
- // trim sent list
- std::lock_guard<std::mutex> l(write_lock);
- while (!sent.empty() && sent.front()->get_seq() <= seq) {
- Message* m = sent.front();
- sent.pop_front();
- ldout(async_msgr->cct, 10) << __func__ << " got ack seq "
- << seq << " >= " << m->get_seq() << " on "
- << m << " " << *m << dendl;
- m->put();
- }
-}
-
-void AsyncConnection::DelayedDelivery::do_request(int id)
-{
- Message *m = nullptr;
- {
- std::lock_guard<std::mutex> l(delay_lock);
- register_time_events.erase(id);
- if (stop_dispatch)
- return ;
- if (delay_queue.empty())
- return ;
- utime_t release = delay_queue.front().first;
- m = delay_queue.front().second;
- string delay_msg_type = msgr->cct->_conf->ms_inject_delay_msg_type;
- utime_t now = ceph_clock_now();
- if ((release > now &&
- (delay_msg_type.empty() || m->get_type_name() == delay_msg_type))) {
- utime_t t = release - now;
- t.sleep();
- }
- delay_queue.pop_front();
- }
- if (msgr->ms_can_fast_dispatch(m)) {
- dispatch_queue->fast_dispatch(m);
- } else {
- dispatch_queue->enqueue(m, m->get_priority(), conn_id);
- }
-}
-
-void AsyncConnection::DelayedDelivery::flush() {
- stop_dispatch = true;
- center->submit_to(
- center->get_id(), [this] () mutable {
- std::lock_guard<std::mutex> l(delay_lock);
- while (!delay_queue.empty()) {
- Message *m = delay_queue.front().second;
- if (msgr->ms_can_fast_dispatch(m)) {
- dispatch_queue->fast_dispatch(m);
- } else {
- dispatch_queue->enqueue(m, m->get_priority(), conn_id);
- }
- delay_queue.pop_front();
- }
- for (auto i : register_time_events)
- center->delete_time_event(i);
- register_time_events.clear();
- stop_dispatch = false;
- }, true);
-}
-
-void AsyncConnection::send_keepalive()
-{
- ldout(async_msgr->cct, 10) << __func__ << dendl;
- std::lock_guard<std::mutex> l(write_lock);
- if (can_write != WriteStatus::CLOSED) {
- keepalive = true;
- center->dispatch_event_external(write_handler);
- }
-}
-
-void AsyncConnection::mark_down()
-{
- ldout(async_msgr->cct, 1) << __func__ << dendl;
- std::lock_guard<std::mutex> l(lock);
- _stop();
-}
-
-void AsyncConnection::_append_keepalive_or_ack(bool ack, utime_t *tp)
-{
- ldout(async_msgr->cct, 10) << __func__ << dendl;
- if (ack) {
- assert(tp);
- struct ceph_timespec ts;
- tp->encode_timeval(&ts);
- outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2_ACK);
- outcoming_bl.append((char*)&ts, sizeof(ts));
- } else if (has_feature(CEPH_FEATURE_MSGR_KEEPALIVE2)) {
- struct ceph_timespec ts;
- utime_t t = ceph_clock_now();
- t.encode_timeval(&ts);
- outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE2);
- outcoming_bl.append((char*)&ts, sizeof(ts));
- } else {
- outcoming_bl.append(CEPH_MSGR_TAG_KEEPALIVE);
- }
-}
-
-void AsyncConnection::handle_write()
-{
- ldout(async_msgr->cct, 10) << __func__ << dendl;
- ssize_t r = 0;
-
- 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 (!policy.lossy) {
- // put on sent list
- sent.push_back(m);
- m->get();
- }
- more = _has_next_outgoing();
- write_lock.unlock();
-
- // send_message or requeue messages may not encode message
- if (!data.length())
- prepare_send_message(get_features(), m, data);
-
- r = write_message(m, data, more);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " send msg failed" << dendl;
- goto fail;
- }
- write_lock.lock();
- if (r > 0)
- break;
- } while (can_write == WriteStatus::CANWRITE);
- write_lock.unlock();
-
- uint64_t left = ack_left;
- if (left) {
- ceph_le64 s;
- s = in_seq;
- outcoming_bl.append(CEPH_MSGR_TAG_ACK);
- outcoming_bl.append((char*)&s, sizeof(s));
- ldout(async_msgr->cct, 10) << __func__ << " try send msg ack, acked " << left << " messages" << dendl;
- ack_left -= left;
- left = ack_left;
- r = _try_send(left);
- } else if (is_queued()) {
- r = _try_send();
- }
-
- logger->tinc(l_msgr_running_send_time, ceph::mono_clock::now() - start);
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " send msg failed" << dendl;
- goto fail;
- }
- } else {
- write_lock.unlock();
- lock.lock();
- write_lock.lock();
- if (state == STATE_STANDBY && !policy.server && is_queued()) {
- ldout(async_msgr->cct, 10) << __func__ << " policy.server is false" << dendl;
- _connect();
- } else if (cs && state != STATE_NONE && state != STATE_CONNECTING && state != STATE_CONNECTING_RE && state != STATE_CLOSED) {
- r = _try_send();
- if (r < 0) {
- ldout(async_msgr->cct, 1) << __func__ << " send outcoming bl failed" << dendl;
- write_lock.unlock();
- fault();
- lock.unlock();
- return ;
- }
- }
- write_lock.unlock();
- lock.unlock();
- }
-
- return ;
-
- fail:
- lock.lock();
- fault();
- lock.unlock();
-}
-
-void AsyncConnection::wakeup_from(uint64_t id)
-{
- lock.lock();
- register_time_events.erase(id);
- lock.unlock();
- process();
-}
-
-void AsyncConnection::tick(uint64_t id)
-{
- auto now = ceph::coarse_mono_clock::now();
- ldout(async_msgr->cct, 20) << __func__ << " last_id=" << last_tick_id
- << " last_active" << last_active << dendl;
- std::lock_guard<std::mutex> l(lock);
- last_tick_id = 0;
- auto idle_period = std::chrono::duration_cast<std::chrono::microseconds>(now - last_active).count();
- if (inactive_timeout_us < (uint64_t)idle_period) {
- ldout(async_msgr->cct, 1) << __func__ << " idle(" << idle_period << ") more than "
- << inactive_timeout_us
- << " us, mark self fault." << dendl;
- fault();
- } else if (is_connected()) {
- last_tick_id = center->create_time_event(inactive_timeout_us, tick_handler);
- }
-}
Code Review / stor4nfv.git / blobdiff