--- /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 <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+
+#include "net_handler.h"
+#include "common/errno.h"
+#include "common/debug.h"
+
+#define dout_subsys ceph_subsys_ms
+#undef dout_prefix
+#define dout_prefix *_dout << "NetHandler "
+
+namespace ceph{
+
+int NetHandler::create_socket(int domain, bool reuse_addr)
+{
+ int s;
+ int r = 0;
+
+ if ((s = ::socket(domain, SOCK_STREAM, 0)) == -1) {
+ r = errno;
+ lderr(cct) << __func__ << " couldn't create socket " << cpp_strerror(r) << dendl;
+ return -r;
+ }
+
+#if !defined(__FreeBSD__)
+ /* Make sure connection-intensive things like the benchmark
+ * will be able to close/open sockets a zillion of times */
+ if (reuse_addr) {
+ int on = 1;
+ if (::setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1) {
+ r = errno;
+ lderr(cct) << __func__ << " setsockopt SO_REUSEADDR failed: "
+ << strerror(r) << dendl;
+ close(s);
+ return -r;
+ }
+ }
+#endif
+
+ return s;
+}
+
+int NetHandler::set_nonblock(int sd)
+{
+ int flags;
+ int r = 0;
+
+ /* Set the socket nonblocking.
+ * Note that fcntl(2) for F_GETFL and F_SETFL can't be
+ * interrupted by a signal. */
+ if ((flags = fcntl(sd, F_GETFL)) < 0 ) {
+ r = errno;
+ lderr(cct) << __func__ << " fcntl(F_GETFL) failed: " << cpp_strerror(r) << dendl;
+ return -r;
+ }
+ if (fcntl(sd, F_SETFL, flags | O_NONBLOCK) < 0) {
+ r = errno;
+ lderr(cct) << __func__ << " fcntl(F_SETFL,O_NONBLOCK): " << cpp_strerror(r) << dendl;
+ return -r;
+ }
+
+ return 0;
+}
+
+void NetHandler::set_close_on_exec(int sd)
+{
+ int flags = fcntl(sd, F_GETFD, 0);
+ if (flags < 0) {
+ int r = errno;
+ lderr(cct) << __func__ << " fcntl(F_GETFD): "
+ << cpp_strerror(r) << dendl;
+ return;
+ }
+ if (fcntl(sd, F_SETFD, flags | FD_CLOEXEC)) {
+ int r = errno;
+ lderr(cct) << __func__ << " fcntl(F_SETFD): "
+ << cpp_strerror(r) << dendl;
+ }
+}
+
+int NetHandler::set_socket_options(int sd, bool nodelay, int size)
+{
+ int r = 0;
+ // disable Nagle algorithm?
+ if (nodelay) {
+ int flag = 1;
+ r = ::setsockopt(sd, IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(flag));
+ if (r < 0) {
+ r = errno;
+ ldout(cct, 0) << "couldn't set TCP_NODELAY: " << cpp_strerror(r) << dendl;
+ }
+ }
+ if (size) {
+ r = ::setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (void*)&size, sizeof(size));
+ if (r < 0) {
+ r = errno;
+ ldout(cct, 0) << "couldn't set SO_RCVBUF to " << size << ": " << cpp_strerror(r) << dendl;
+ }
+ }
+
+ // block ESIGPIPE
+#ifdef CEPH_USE_SO_NOSIGPIPE
+ int val = 1;
+ r = ::setsockopt(sd, SOL_SOCKET, SO_NOSIGPIPE, (void*)&val, sizeof(val));
+ if (r) {
+ r = errno;
+ ldout(cct,0) << "couldn't set SO_NOSIGPIPE: " << cpp_strerror(r) << dendl;
+ }
+#endif
+ return -r;
+}
+
+void NetHandler::set_priority(int sd, int prio, int domain)
+{
+#ifdef SO_PRIORITY
+ if (prio < 0) {
+ return;
+ }
+#ifdef IPTOS_CLASS_CS6
+ int iptos = IPTOS_CLASS_CS6;
+ int r = -1;
+ switch (domain) {
+ case AF_INET:
+ r = ::setsockopt(sd, IPPROTO_IP, IP_TOS, &iptos, sizeof(iptos));
+ break;
+ case AF_INET6:
+ r = ::setsockopt(sd, IPPROTO_IPV6, IPV6_TCLASS, &iptos, sizeof(iptos));
+ break;
+ default:
+ lderr(cct) << "couldn't set ToS of unknown family (" << domain << ")"
+ << " to " << iptos << dendl;
+ return;
+ }
+ if (r < 0) {
+ r = errno;
+ ldout(cct,0) << "couldn't set TOS to " << iptos
+ << ": " << cpp_strerror(r) << dendl;
+ }
+
+#endif // IPTOS_CLASS_CS6
+ // setsockopt(IPTOS_CLASS_CS6) sets the priority of the socket as 0.
+ // See http://goo.gl/QWhvsD and http://goo.gl/laTbjT
+ // We need to call setsockopt(SO_PRIORITY) after it.
+ r = ::setsockopt(sd, SOL_SOCKET, SO_PRIORITY, &prio, sizeof(prio));
+ if (r < 0) {
+ r = errno;
+ ldout(cct, 0) << __func__ << " couldn't set SO_PRIORITY to " << prio
+ << ": " << cpp_strerror(r) << dendl;
+ }
+#else
+ return;
+#endif // SO_PRIORITY
+}
+
+int NetHandler::generic_connect(const entity_addr_t& addr, const entity_addr_t &bind_addr, bool nonblock)
+{
+ int ret;
+ int s = create_socket(addr.get_family());
+ if (s < 0)
+ return s;
+
+ if (nonblock) {
+ ret = set_nonblock(s);
+ if (ret < 0) {
+ close(s);
+ return ret;
+ }
+ }
+
+ set_socket_options(s, cct->_conf->ms_tcp_nodelay, cct->_conf->ms_tcp_rcvbuf);
+
+ {
+ entity_addr_t addr = bind_addr;
+ if (cct->_conf->ms_bind_before_connect && (!addr.is_blank_ip())) {
+ addr.set_port(0);
+ ret = ::bind(s, addr.get_sockaddr(), addr.get_sockaddr_len());
+ if (ret < 0) {
+ ret = errno;
+ ldout(cct, 2) << __func__ << " client bind error " << ", " << cpp_strerror(ret) << dendl;
+ close(s);
+ return -ret;
+ }
+ }
+ }
+
+ ret = ::connect(s, addr.get_sockaddr(), addr.get_sockaddr_len());
+ if (ret < 0) {
+ ret = errno;
+ if (errno == EINPROGRESS && nonblock)
+ return s;
+
+ ldout(cct, 10) << __func__ << " connect: " << cpp_strerror(ret) << dendl;
+ close(s);
+ return -ret;
+ }
+
+ return s;
+}
+
+int NetHandler::reconnect(const entity_addr_t &addr, int sd)
+{
+ int r = 0;
+ int ret = ::connect(sd, addr.get_sockaddr(), addr.get_sockaddr_len());
+
+ if (ret < 0 && errno != EISCONN) {
+ r = errno;
+ ldout(cct, 10) << __func__ << " reconnect: " << strerror(r) << dendl;
+ if (r == EINPROGRESS || r == EALREADY)
+ return 1;
+ return -r;
+ }
+
+ return 0;
+}
+
+int NetHandler::connect(const entity_addr_t &addr, const entity_addr_t& bind_addr)
+{
+ return generic_connect(addr, bind_addr, false);
+}
+
+int NetHandler::nonblock_connect(const entity_addr_t &addr, const entity_addr_t& bind_addr)
+{
+ return generic_connect(addr, bind_addr, true);
+}
+
+
+}
Code Review / stor4nfv.git / blobdiff