--- /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) 2004-2006 Sage Weil <sage@newdream.net>
+ * Portions Copyright (C) 2013 CohortFS, LLC
+ *
+ * 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 "XioMsg.h"
+#include "XioConnection.h"
+#include "XioMessenger.h"
+#include "messages/MDataPing.h"
+#include "msg/msg_types.h"
+#include "auth/none/AuthNoneProtocol.h" // XXX
+
+#include "include/assert.h"
+#include "common/dout.h"
+
+extern struct xio_mempool *xio_msgr_mpool;
+extern struct xio_mempool *xio_msgr_noreg_mpool;
+
+#define dout_subsys ceph_subsys_xio
+
+void print_xio_msg_hdr(CephContext *cct, const char *tag,
+ const XioMsgHdr &hdr, const struct xio_msg *msg)
+{
+ if (msg) {
+ ldout(cct,4) << tag <<
+ " xio msg:" <<
+ " sn: " << msg->sn <<
+ " timestamp: " << msg->timestamp <<
+ dendl;
+ }
+
+ ldout(cct,4) << tag <<
+ " ceph header: " <<
+ " front_len: " << hdr.hdr->front_len <<
+ " seq: " << hdr.hdr->seq <<
+ " tid: " << hdr.hdr->tid <<
+ " type: " << hdr.hdr->type <<
+ " prio: " << hdr.hdr->priority <<
+ " name type: " << (int) hdr.hdr->src.type <<
+ " name num: " << (int) hdr.hdr->src.num <<
+ " version: " << hdr.hdr->version <<
+ " compat_version: " << hdr.hdr->compat_version <<
+ " front_len: " << hdr.hdr->front_len <<
+ " middle_len: " << hdr.hdr->middle_len <<
+ " data_len: " << hdr.hdr->data_len <<
+ " xio header: " <<
+ " msg_cnt: " << hdr.msg_cnt <<
+ dendl;
+
+ ldout(cct,4) << tag <<
+ " ceph footer: " <<
+ " front_crc: " << hdr.ftr->front_crc <<
+ " middle_crc: " << hdr.ftr->middle_crc <<
+ " data_crc: " << hdr.ftr->data_crc <<
+ " sig: " << hdr.ftr->sig <<
+ " flags: " << (uint32_t) hdr.ftr->flags <<
+ dendl;
+}
+
+void print_ceph_msg(CephContext *cct, const char *tag, Message *m)
+{
+ if (m->get_magic() & (MSG_MAGIC_XIO & MSG_MAGIC_TRACE_DTOR)) {
+ ceph_msg_header& header = m->get_header();
+ ldout(cct,4) << tag << " header version " << header.version <<
+ " compat version " << header.compat_version <<
+ dendl;
+ }
+}
+
+#undef dout_prefix
+#define dout_prefix conn_prefix(_dout)
+ostream& XioConnection::conn_prefix(std::ostream *_dout) {
+ return *_dout << "-- " << get_messenger()->get_myinst().addr << " >> " << peer_addr
+ << " peer=" << peer.name.type_str()
+ << " conn=" << conn << " sess=" << session << " ";
+}
+
+XioConnection::XioConnection(XioMessenger *m, XioConnection::type _type,
+ const entity_inst_t& _peer) :
+ Connection(m->cct, m),
+ xio_conn_type(_type),
+ portal(m->get_portal()),
+ connected(false),
+ peer(_peer),
+ session(NULL),
+ conn(NULL),
+ magic(m->get_magic()),
+ scount(0),
+ send_ctr(0),
+ in_seq(),
+ cstate(this)
+{
+ pthread_spin_init(&sp, PTHREAD_PROCESS_PRIVATE);
+ set_peer_type(peer.name.type());
+ set_peer_addr(peer.addr);
+
+ Messenger::Policy policy;
+ int64_t max_msgs = 0, max_bytes = 0, bytes_opt = 0;
+ int xopt;
+
+ policy = m->get_policy(peer_type);
+
+ if (policy.throttler_messages) {
+ max_msgs = policy.throttler_messages->get_max();
+ ldout(m->cct,4) << "XioMessenger throttle_msgs: " << max_msgs << dendl;
+ }
+
+ xopt = m->cct->_conf->xio_queue_depth;
+ if (max_msgs > xopt)
+ xopt = max_msgs;
+
+ /* set high mark for send, reserved 20% for credits */
+ q_high_mark = xopt * 4 / 5;
+ q_low_mark = q_high_mark/2;
+
+ /* set send & receive msgs queue depth */
+ xio_set_opt(NULL, XIO_OPTLEVEL_ACCELIO, XIO_OPTNAME_SND_QUEUE_DEPTH_MSGS,
+ &xopt, sizeof(xopt));
+ xio_set_opt(NULL, XIO_OPTLEVEL_ACCELIO, XIO_OPTNAME_RCV_QUEUE_DEPTH_MSGS,
+ &xopt, sizeof(xopt));
+
+ if (policy.throttler_bytes) {
+ max_bytes = policy.throttler_bytes->get_max();
+ ldout(m->cct,4) << "XioMessenger throttle_bytes: " << max_bytes << dendl;
+ }
+
+ bytes_opt = (2 << 28); /* default: 512 MB */
+ if (max_bytes > bytes_opt)
+ bytes_opt = max_bytes;
+
+ /* set send & receive total bytes throttle */
+ xio_set_opt(NULL, XIO_OPTLEVEL_ACCELIO, XIO_OPTNAME_SND_QUEUE_DEPTH_BYTES,
+ &bytes_opt, sizeof(bytes_opt));
+ xio_set_opt(NULL, XIO_OPTLEVEL_ACCELIO, XIO_OPTNAME_RCV_QUEUE_DEPTH_BYTES,
+ &bytes_opt, sizeof(bytes_opt));
+
+ ldout(m->cct,4) << "throttle_msgs: " << xopt << " throttle_bytes: " << bytes_opt << dendl;
+
+ /* XXXX fake features, aieee! */
+ set_features(XIO_ALL_FEATURES);
+}
+
+int XioConnection::send_message(Message *m)
+{
+ XioMessenger *ms = static_cast<XioMessenger*>(get_messenger());
+ return ms->_send_message(m, this);
+}
+
+void XioConnection::send_keepalive_or_ack(bool ack, const utime_t *tp)
+{
+ /* If con is not in READY state, we need to queue the request */
+ if (cstate.session_state.read() != XioConnection::UP) {
+ pthread_spin_lock(&sp);
+ if (cstate.session_state.read() != XioConnection::UP) {
+ if (ack) {
+ outgoing.ack = true;
+ outgoing.ack_time = *tp;
+ }
+ else {
+ outgoing.keepalive = true;
+ }
+ pthread_spin_unlock(&sp);
+ return;
+ }
+ pthread_spin_unlock(&sp);
+ }
+
+ send_keepalive_or_ack_internal(ack, tp);
+}
+
+void XioConnection::send_keepalive_or_ack_internal(bool ack, const utime_t *tp)
+{
+ XioCommand *xcmd = pool_alloc_xio_command(this);
+ if (! xcmd) {
+ /* could happen if Accelio has been shutdown */
+ return;
+ }
+
+ struct ceph_timespec ts;
+ if (ack) {
+ assert(tp);
+ tp->encode_timeval(&ts);
+ xcmd->get_bl_ref().append(CEPH_MSGR_TAG_KEEPALIVE2_ACK);
+ xcmd->get_bl_ref().append((char*)&ts, sizeof(ts));
+ } else if (has_feature(CEPH_FEATURE_MSGR_KEEPALIVE2)) {
+ utime_t t = ceph_clock_now();
+ t.encode_timeval(&ts);
+ xcmd->get_bl_ref().append(CEPH_MSGR_TAG_KEEPALIVE2);
+ xcmd->get_bl_ref().append((char*)&ts, sizeof(ts));
+ } else {
+ xcmd->get_bl_ref().append(CEPH_MSGR_TAG_KEEPALIVE);
+ }
+
+ const std::list<buffer::ptr>& header = xcmd->get_bl_ref().buffers();
+ assert(header.size() == 1); /* accelio header must be without scatter gather */
+ list<bufferptr>::const_iterator pb = header.begin();
+ assert(pb->length() < XioMsgHdr::get_max_encoded_length());
+ struct xio_msg * msg = xcmd->get_xio_msg();
+ msg->out.header.iov_base = (char*) pb->c_str();
+ msg->out.header.iov_len = pb->length();
+
+ ldout(msgr->cct,8) << __func__ << " sending command with tag " << (int)(*(char*)msg->out.header.iov_base)
+ << " len " << msg->out.header.iov_len << dendl;
+
+ portal->enqueue(this, xcmd);
+}
+
+
+int XioConnection::passive_setup()
+{
+ /* XXX passive setup is a placeholder for (potentially active-side
+ initiated) feature and auth* negotiation */
+ static bufferlist authorizer_reply; /* static because fake */
+ static CryptoKey session_key; /* ditto */
+ bool authorizer_valid;
+
+ XioMessenger *msgr = static_cast<XioMessenger*>(get_messenger());
+
+ // fake an auth buffer
+ EntityName name;
+ name.set_type(peer.name.type());
+
+ AuthNoneAuthorizer auth;
+ auth.build_authorizer(name, peer.name.num());
+
+ /* XXX fake authorizer! */
+ msgr->ms_deliver_verify_authorizer(
+ this, peer_type, CEPH_AUTH_NONE,
+ auth.bl,
+ authorizer_reply,
+ authorizer_valid,
+ session_key);
+
+ /* notify hook */
+ msgr->ms_deliver_handle_accept(this);
+ msgr->ms_deliver_handle_fast_accept(this);
+
+ /* try to insert in conns_entity_map */
+ msgr->try_insert(this);
+ return (0);
+}
+
+static inline XioDispatchHook* pool_alloc_xio_dispatch_hook(
+ XioConnection *xcon, Message *m, XioInSeq& msg_seq)
+{
+ struct xio_reg_mem mp_mem;
+ int e = xpool_alloc(xio_msgr_noreg_mpool,
+ sizeof(XioDispatchHook), &mp_mem);
+ if (!!e)
+ return NULL;
+ XioDispatchHook *xhook = static_cast<XioDispatchHook*>(mp_mem.addr);
+ new (xhook) XioDispatchHook(xcon, m, msg_seq, mp_mem);
+ return xhook;
+}
+
+int XioConnection::handle_data_msg(struct xio_session *session,
+ struct xio_msg *msg,
+ int more_in_batch,
+ void *cb_user_context)
+{
+ struct xio_msg *tmsg = msg;
+
+ /* XXX Accelio guarantees message ordering at
+ * xio_session */
+
+ if (! in_seq.p()) {
+ if (!tmsg->in.header.iov_len) {
+ ldout(msgr->cct,0) << __func__ << " empty header: packet out of sequence?" << dendl;
+ xio_release_msg(msg);
+ return 0;
+ }
+ const size_t sizeof_tag = 1;
+ XioMsgCnt msg_cnt(
+ buffer::create_static(tmsg->in.header.iov_len-sizeof_tag,
+ ((char*) tmsg->in.header.iov_base)+sizeof_tag));
+ ldout(msgr->cct,10) << __func__ << " receive msg " << "tmsg " << tmsg
+ << " msg_cnt " << msg_cnt.msg_cnt
+ << " iov_base " << tmsg->in.header.iov_base
+ << " iov_len " << (int) tmsg->in.header.iov_len
+ << " nents " << tmsg->in.pdata_iov.nents
+ << " sn " << tmsg->sn << dendl;
+ assert(session == this->session);
+ in_seq.set_count(msg_cnt.msg_cnt);
+ } else {
+ /* XXX major sequence error */
+ assert(! tmsg->in.header.iov_len);
+ }
+
+ in_seq.append(msg);
+ if (in_seq.count() > 0) {
+ return 0;
+ }
+
+ XioMessenger *msgr = static_cast<XioMessenger*>(get_messenger());
+ XioDispatchHook *m_hook =
+ pool_alloc_xio_dispatch_hook(this, NULL /* msg */, in_seq);
+ XioInSeq& msg_seq = m_hook->msg_seq;
+ in_seq.clear();
+
+ ceph_msg_header header;
+ ceph_msg_footer footer;
+ buffer::list payload, middle, data;
+
+ const utime_t recv_stamp = ceph_clock_now();
+
+ ldout(msgr->cct,4) << __func__ << " " << "msg_seq.size()=" << msg_seq.size() <<
+ dendl;
+
+ struct xio_msg* msg_iter = msg_seq.begin();
+ tmsg = msg_iter;
+ XioMsgHdr hdr(header, footer,
+ buffer::create_static(tmsg->in.header.iov_len,
+ (char*) tmsg->in.header.iov_base));
+
+ if (magic & (MSG_MAGIC_TRACE_XCON)) {
+ if (hdr.hdr->type == 43) {
+ print_xio_msg_hdr(msgr->cct, "on_msg", hdr, NULL);
+ }
+ }
+
+ unsigned int ix, blen, iov_len;
+ struct xio_iovec_ex *msg_iov, *iovs;
+ uint32_t take_len, left_len = 0;
+ char *left_base = NULL;
+
+ ix = 0;
+ blen = header.front_len;
+
+ while (blen && (msg_iter != msg_seq.end())) {
+ tmsg = msg_iter;
+ iov_len = vmsg_sglist_nents(&tmsg->in);
+ iovs = vmsg_sglist(&tmsg->in);
+ for (; blen && (ix < iov_len); ++ix) {
+ msg_iov = &iovs[ix];
+
+ /* XXX need to detect any buffer which needs to be
+ * split due to coalescing of a segment (front, middle,
+ * data) boundary */
+
+ take_len = MIN(blen, msg_iov->iov_len);
+ payload.append(
+ buffer::create_msg(
+ take_len, (char*) msg_iov->iov_base, m_hook));
+ blen -= take_len;
+ if (! blen) {
+ left_len = msg_iov->iov_len - take_len;
+ if (left_len) {
+ left_base = ((char*) msg_iov->iov_base) + take_len;
+ }
+ }
+ }
+ /* XXX as above, if a buffer is split, then we needed to track
+ * the new start (carry) and not advance */
+ if (ix == iov_len) {
+ msg_seq.next(&msg_iter);
+ ix = 0;
+ }
+ }
+
+ if (magic & (MSG_MAGIC_TRACE_XCON)) {
+ if (hdr.hdr->type == 43) {
+ ldout(msgr->cct,4) << "front (payload) dump:";
+ payload.hexdump( *_dout );
+ *_dout << dendl;
+ }
+ }
+
+ blen = header.middle_len;
+
+ if (blen && left_len) {
+ middle.append(
+ buffer::create_msg(left_len, left_base, m_hook));
+ left_len = 0;
+ }
+
+ while (blen && (msg_iter != msg_seq.end())) {
+ tmsg = msg_iter;
+ iov_len = vmsg_sglist_nents(&tmsg->in);
+ iovs = vmsg_sglist(&tmsg->in);
+ for (; blen && (ix < iov_len); ++ix) {
+ msg_iov = &iovs[ix];
+ take_len = MIN(blen, msg_iov->iov_len);
+ middle.append(
+ buffer::create_msg(
+ take_len, (char*) msg_iov->iov_base, m_hook));
+ blen -= take_len;
+ if (! blen) {
+ left_len = msg_iov->iov_len - take_len;
+ if (left_len) {
+ left_base = ((char*) msg_iov->iov_base) + take_len;
+ }
+ }
+ }
+ if (ix == iov_len) {
+ msg_seq.next(&msg_iter);
+ ix = 0;
+ }
+ }
+
+ blen = header.data_len;
+
+ if (blen && left_len) {
+ data.append(
+ buffer::create_msg(left_len, left_base, m_hook));
+ left_len = 0;
+ }
+
+ while (blen && (msg_iter != msg_seq.end())) {
+ tmsg = msg_iter;
+ iov_len = vmsg_sglist_nents(&tmsg->in);
+ iovs = vmsg_sglist(&tmsg->in);
+ for (; blen && (ix < iov_len); ++ix) {
+ msg_iov = &iovs[ix];
+ data.append(
+ buffer::create_msg(
+ msg_iov->iov_len, (char*) msg_iov->iov_base, m_hook));
+ blen -= msg_iov->iov_len;
+ }
+ if (ix == iov_len) {
+ msg_seq.next(&msg_iter);
+ ix = 0;
+ }
+ }
+
+ /* update connection timestamp */
+ recv = tmsg->timestamp;
+
+ Message *m = decode_message(msgr->cct, msgr->crcflags, header, footer,
+ payload, middle, data, this);
+
+ if (m) {
+ /* completion */
+ m->set_connection(this);
+
+ /* reply hook */
+ m_hook->set_message(m);
+ m->set_completion_hook(m_hook);
+
+ /* trace flag */
+ m->set_magic(magic);
+
+ /* update timestamps */
+ m->set_recv_stamp(recv_stamp);
+ m->set_recv_complete_stamp(ceph_clock_now());
+ m->set_seq(header.seq);
+
+ /* MP-SAFE */
+ state.set_in_seq(header.seq);
+
+ /* XXXX validate peer type */
+ if (peer_type != (int) hdr.peer_type) { /* XXX isn't peer_type -1? */
+ peer_type = hdr.peer_type;
+ peer_addr = hdr.addr;
+ peer.addr = peer_addr;
+ peer.name = entity_name_t(hdr.hdr->src);
+ if (xio_conn_type == XioConnection::PASSIVE) {
+ /* XXX kick off feature/authn/authz negotiation
+ * nb: very possibly the active side should initiate this, but
+ * for now, call a passive hook so OSD and friends can create
+ * sessions without actually negotiating
+ */
+ passive_setup();
+ }
+ }
+
+ if (magic & (MSG_MAGIC_TRACE_XCON)) {
+ ldout(msgr->cct,4) << "decode m is " << m->get_type() << dendl;
+ }
+
+ /* dispatch it */
+ msgr->ds_dispatch(m);
+ } else {
+ /* responds for undecoded messages and frees hook */
+ ldout(msgr->cct,4) << "decode m failed" << dendl;
+ m_hook->on_err_finalize(this);
+ }
+
+ return 0;
+}
+
+int XioConnection::on_msg(struct xio_session *session,
+ struct xio_msg *msg,
+ int more_in_batch,
+ void *cb_user_context)
+{
+ char tag = CEPH_MSGR_TAG_MSG;
+ if (msg->in.header.iov_len)
+ tag = *(char*)msg->in.header.iov_base;
+
+ ldout(msgr->cct,8) << __func__ << " receive msg with iov_len "
+ << (int) msg->in.header.iov_len << " tag " << (int)tag << dendl;
+
+ //header_len_without_tag is only meaningful in case we have tag
+ size_t header_len_without_tag = msg->in.header.iov_len - sizeof(tag);
+
+ switch(tag) {
+ case CEPH_MSGR_TAG_MSG:
+ ldout(msgr->cct, 20) << __func__ << " got data message" << dendl;
+ return handle_data_msg(session, msg, more_in_batch, cb_user_context);
+
+ case CEPH_MSGR_TAG_KEEPALIVE:
+ ldout(msgr->cct, 20) << __func__ << " got KEEPALIVE" << dendl;
+ set_last_keepalive(ceph_clock_now());
+ break;
+
+ case CEPH_MSGR_TAG_KEEPALIVE2:
+ if (header_len_without_tag < sizeof(ceph_timespec)) {
+ lderr(msgr->cct) << __func__ << " too few data for KEEPALIVE2: got " << header_len_without_tag <<
+ " bytes instead of " << sizeof(ceph_timespec) << " bytes" << dendl;
+ }
+ else {
+ ceph_timespec *t = (ceph_timespec *) ((char*)msg->in.header.iov_base + sizeof(tag));
+ utime_t kp_t = utime_t(*t);
+ ldout(msgr->cct, 20) << __func__ << " got KEEPALIVE2 with timestamp" << kp_t << dendl;
+ send_keepalive_or_ack(true, &kp_t);
+ set_last_keepalive(ceph_clock_now());
+ }
+
+ break;
+
+ case CEPH_MSGR_TAG_KEEPALIVE2_ACK:
+ if (header_len_without_tag < sizeof(ceph_timespec)) {
+ lderr(msgr->cct) << __func__ << " too few data for KEEPALIVE2_ACK: got " << header_len_without_tag <<
+ " bytes instead of " << sizeof(ceph_timespec) << " bytes" << dendl;
+ }
+ else {
+ ceph_timespec *t = (ceph_timespec *) ((char*)msg->in.header.iov_base + sizeof(tag));
+ utime_t kp_t(*t);
+ ldout(msgr->cct, 20) << __func__ << " got KEEPALIVE2_ACK with timestamp" << kp_t << dendl;
+ set_last_keepalive_ack(kp_t);
+ }
+ break;
+
+ default:
+ lderr(msgr->cct) << __func__ << " unsupported message tag " << (int) tag << dendl;
+ assert(! "unsupported message tag");
+ }
+
+ xio_release_msg(msg);
+ return 0;
+}
+
+
+int XioConnection::on_ow_msg_send_complete(struct xio_session *session,
+ struct xio_msg *req,
+ void *conn_user_context)
+{
+ /* requester send complete (one-way) */
+ uint64_t rc = ++scount;
+
+ XioSend* xsend = static_cast<XioSend*>(req->user_context);
+ if (unlikely(magic & MSG_MAGIC_TRACE_CTR)) {
+ if (unlikely((rc % 1000000) == 0)) {
+ std::cout << "xio finished " << rc << " " << time(0) << std::endl;
+ }
+ } /* trace ctr */
+
+ ldout(msgr->cct,11) << "on_msg_delivered xcon: " << xsend->xcon <<
+ " msg: " << req << " sn: " << req->sn << dendl;
+
+ XioMsg *xmsg = dynamic_cast<XioMsg*>(xsend);
+ if (xmsg) {
+ ldout(msgr->cct,11) << "on_msg_delivered xcon: " <<
+ " type: " << xmsg->m->get_type() << " tid: " << xmsg->m->get_tid() <<
+ " seq: " << xmsg->m->get_seq() << dendl;
+ }
+
+ --send_ctr; /* atomic, because portal thread */
+
+ /* unblock flow-controlled connections, avoid oscillation */
+ if (unlikely(cstate.session_state.read() ==
+ XioConnection::FLOW_CONTROLLED)) {
+ if ((send_ctr <= uint32_t(xio_qdepth_low_mark())) &&
+ (1 /* XXX memory <= memory low-water mark */)) {
+ cstate.state_up_ready(XioConnection::CState::OP_FLAG_NONE);
+ ldout(msgr->cct,2) << "on_msg_delivered xcon: " << xsend->xcon
+ << " up_ready from flow_controlled" << dendl;
+ }
+ }
+
+ xsend->put();
+
+ return 0;
+} /* on_msg_delivered */
+
+void XioConnection::msg_send_fail(XioSend *xsend, int code)
+{
+ ldout(msgr->cct,2) << "xio_send_msg FAILED xcon: " << this <<
+ " msg: " << xsend->get_xio_msg() << " code=" << code <<
+ " (" << xio_strerror(code) << ")" << dendl;
+ /* return refs taken for each xio_msg */
+ xsend->put_msg_refs();
+} /* msg_send_fail */
+
+void XioConnection::msg_release_fail(struct xio_msg *msg, int code)
+{
+ ldout(msgr->cct,2) << "xio_release_msg FAILED xcon: " << this <<
+ " msg: " << msg << "code=" << code <<
+ " (" << xio_strerror(code) << ")" << dendl;
+} /* msg_release_fail */
+
+int XioConnection::flush_out_queues(uint32_t flags) {
+ XioMessenger* msgr = static_cast<XioMessenger*>(get_messenger());
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_lock(&sp);
+
+ if (outgoing.keepalive) {
+ outgoing.keepalive = false;
+ send_keepalive_or_ack_internal();
+ }
+
+ if (outgoing.ack) {
+ outgoing.ack = false;
+ send_keepalive_or_ack_internal(true, &outgoing.ack_time);
+ }
+
+ // send deferred 1 (direct backpresssure)
+ if (outgoing.requeue.size() > 0)
+ portal->requeue(this, outgoing.requeue);
+
+ // send deferred 2 (sent while deferred)
+ int ix, q_size = outgoing.mqueue.size();
+ for (ix = 0; ix < q_size; ++ix) {
+ Message::Queue::iterator q_iter = outgoing.mqueue.begin();
+ Message* m = &(*q_iter);
+ outgoing.mqueue.erase(q_iter);
+ msgr->_send_message_impl(m, this);
+ }
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&sp);
+ return 0;
+}
+
+int XioConnection::discard_out_queues(uint32_t flags)
+{
+ Message::Queue disc_q;
+ XioSubmit::Queue deferred_q;
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_lock(&sp);
+
+ /* the two send queues contain different objects:
+ * - anything on the mqueue is a Message
+ * - anything on the requeue is an XioSend
+ */
+ Message::Queue::const_iterator i1 = disc_q.end();
+ disc_q.splice(i1, outgoing.mqueue);
+
+ XioSubmit::Queue::const_iterator i2 = deferred_q.end();
+ deferred_q.splice(i2, outgoing.requeue);
+
+ outgoing.keepalive = outgoing.ack = false;
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&sp);
+
+ // mqueue
+ while (!disc_q.empty()) {
+ Message::Queue::iterator q_iter = disc_q.begin();
+ Message* m = &(*q_iter);
+ disc_q.erase(q_iter);
+ m->put();
+ }
+
+ // requeue
+ while (!deferred_q.empty()) {
+ XioSubmit::Queue::iterator q_iter = deferred_q.begin();
+ XioSubmit* xs = &(*q_iter);
+ XioSend* xsend;
+ switch (xs->type) {
+ case XioSubmit::OUTGOING_MSG:
+ xsend = static_cast<XioSend*>(xs);
+ deferred_q.erase(q_iter);
+ // release once for each chained xio_msg
+ xsend->put(xsend->get_msg_count());
+ break;
+ case XioSubmit::INCOMING_MSG_RELEASE:
+ deferred_q.erase(q_iter);
+ portal->release_xio_msg(static_cast<XioCompletion*>(xs));
+ break;
+ default:
+ ldout(msgr->cct,0) << __func__ << ": Unknown Msg type " << xs->type << dendl;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+int XioConnection::adjust_clru(uint32_t flags)
+{
+ if (flags & CState::OP_FLAG_LOCKED)
+ pthread_spin_unlock(&sp);
+
+ XioMessenger* msgr = static_cast<XioMessenger*>(get_messenger());
+ msgr->conns_sp.lock();
+ pthread_spin_lock(&sp);
+
+ if (cstate.flags & CState::FLAG_MAPPED) {
+ XioConnection::ConnList::iterator citer =
+ XioConnection::ConnList::s_iterator_to(*this);
+ msgr->conns_list.erase(citer);
+ msgr->conns_list.push_front(*this); // LRU
+ }
+
+ msgr->conns_sp.unlock();
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&sp);
+
+ return 0;
+}
+
+int XioConnection::on_msg_error(struct xio_session *session,
+ enum xio_status error,
+ struct xio_msg *msg,
+ void *conn_user_context)
+{
+ XioSend *xsend = static_cast<XioSend*>(msg->user_context);
+ if (xsend)
+ xsend->put();
+
+ --send_ctr; /* atomic, because portal thread */
+ return 0;
+} /* on_msg_error */
+
+void XioConnection::mark_down()
+{
+ _mark_down(XioConnection::CState::OP_FLAG_NONE);
+}
+
+int XioConnection::_mark_down(uint32_t flags)
+{
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_lock(&sp);
+
+ // per interface comment, we only stage a remote reset if the
+ // current policy required it
+ if (cstate.policy.resetcheck)
+ cstate.flags |= CState::FLAG_RESET;
+
+ disconnect();
+
+ /* XXX this will almost certainly be called again from
+ * on_disconnect_event() */
+ discard_out_queues(flags|CState::OP_FLAG_LOCKED);
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&sp);
+
+ return 0;
+}
+
+void XioConnection::mark_disposable()
+{
+ _mark_disposable(XioConnection::CState::OP_FLAG_NONE);
+}
+
+int XioConnection::_mark_disposable(uint32_t flags)
+{
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_lock(&sp);
+
+ cstate.policy.lossy = true;
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&sp);
+
+ return 0;
+}
+
+int XioConnection::CState::state_up_ready(uint32_t flags)
+{
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_lock(&xcon->sp);
+
+ xcon->flush_out_queues(flags|CState::OP_FLAG_LOCKED);
+
+ session_state = session_states::UP;
+ startup_state = session_startup_states::READY;
+
+ if (! (flags & CState::OP_FLAG_LOCKED))
+ pthread_spin_unlock(&xcon->sp);
+
+ return (0);
+}
+
+int XioConnection::CState::state_discon()
+{
+ session_state = session_states::DISCONNECTED;
+ startup_state = session_startup_states::IDLE;
+
+ return 0;
+}
+
+int XioConnection::CState::state_flow_controlled(uint32_t flags)
+{
+ if (! (flags & OP_FLAG_LOCKED))
+ pthread_spin_lock(&xcon->sp);
+
+ session_state = session_states::FLOW_CONTROLLED;
+
+ if (! (flags & OP_FLAG_LOCKED))
+ pthread_spin_unlock(&xcon->sp);
+
+ return (0);
+}
+
+int XioConnection::CState::state_fail(Message* m, uint32_t flags)
+{
+ if (! (flags & OP_FLAG_LOCKED))
+ pthread_spin_lock(&xcon->sp);
+
+ // advance to state FAIL, drop queued, msgs, adjust LRU
+ session_state = session_states::DISCONNECTED);
+ startup_state = session_startup_states::FAIL);
+
+ xcon->discard_out_queues(flags|OP_FLAG_LOCKED);
+ xcon->adjust_clru(flags|OP_FLAG_LOCKED|OP_FLAG_LRU);
+
+ xcon->disconnect();
+
+ if (! (flags & OP_FLAG_LOCKED))
+ pthread_spin_unlock(&xcon->sp);
+
+ // notify ULP
+ XioMessenger* msgr = static_cast<XioMessenger*>(xcon->get_messenger());
+ msgr->ms_deliver_handle_reset(xcon);
+ m->put();
+
+ return 0;
+}
+
+
+int XioLoopbackConnection::send_message(Message *m)
+{
+ XioMessenger *ms = static_cast<XioMessenger*>(get_messenger());
+ m->set_connection(this);
+ m->set_seq(next_seq());
+ m->set_src(ms->get_myinst().name);
+ ms->ds_dispatch(m);
+ return 0;
+}
+
+void XioLoopbackConnection::send_keepalive()
+{
+ utime_t t = ceph_clock_now();
+ set_last_keepalive(t);
+ set_last_keepalive_ack(t);
+}
Code Review / stor4nfv.git / blobdiff