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-rw-r--r--rpc/rpc-transport/socket/src/socket.c2308
1 files changed, 2308 insertions, 0 deletions
diff --git a/rpc/rpc-transport/socket/src/socket.c b/rpc/rpc-transport/socket/src/socket.c
new file mode 100644
index 000000000..4ca7121e8
--- /dev/null
+++ b/rpc/rpc-transport/socket/src/socket.c
@@ -0,0 +1,2308 @@
+/*
+ Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "socket.h"
+#include "name.h"
+#include "dict.h"
+#include "rpc-transport.h"
+#include "logging.h"
+#include "xlator.h"
+#include "byte-order.h"
+#include "common-utils.h"
+#include "compat-errno.h"
+#include "protocol-common.h"
+
+#include "glusterfs-xdr.h"
+#include <fcntl.h>
+#include <errno.h>
+#include <netinet/tcp.h>
+
+#define GF_LOG_ERRNO(errno) ((errno == ENOTCONN) ? GF_LOG_DEBUG : GF_LOG_ERROR)
+#define SA(ptr) ((struct sockaddr *)ptr)
+
+#define __socket_proto_reset_pending(priv) do { \
+ memset (&priv->incoming.frag.vector, 0, \
+ sizeof (priv->incoming.frag.vector)); \
+ priv->incoming.frag.pending_vector = \
+ &priv->incoming.frag.vector; \
+ priv->incoming.frag.pending_vector->iov_base = \
+ priv->incoming.frag.fragcurrent; \
+ priv->incoming.pending_vector = \
+ priv->incoming.frag.pending_vector; \
+ } while (0);
+
+
+#define __socket_proto_update_pending(priv) \
+ do { \
+ uint32_t remaining_fragsize = 0; \
+ if (priv->incoming.frag.pending_vector->iov_len == 0) { \
+ remaining_fragsize = RPC_FRAGSIZE (priv->incoming.fraghdr) \
+ - priv->incoming.frag.bytes_read; \
+ \
+ priv->incoming.frag.pending_vector->iov_len = \
+ remaining_fragsize > priv->incoming.frag.remaining_size \
+ ? priv->incoming.frag.remaining_size : remaining_fragsize; \
+ \
+ priv->incoming.frag.remaining_size -= \
+ priv->incoming.frag.pending_vector->iov_len; \
+ } \
+ } while (0);
+
+#define __socket_proto_update_priv_after_read(priv, ret, bytes_read) \
+ { \
+ priv->incoming.frag.fragcurrent += bytes_read; \
+ priv->incoming.frag.bytes_read += bytes_read; \
+ \
+ if ((ret > 0) || (priv->incoming.frag.remaining_size != 0)) { \
+ if (priv->incoming.frag.remaining_size != 0) { \
+ __socket_proto_reset_pending (priv); \
+ } \
+ \
+ gf_log (this->name, GF_LOG_TRACE, "partial read on non-blocking socket"); \
+ \
+ break; \
+ } \
+ }
+
+#define __socket_proto_init_pending(priv, size) \
+ do { \
+ uint32_t remaining_fragsize = 0; \
+ remaining_fragsize = RPC_FRAGSIZE (priv->incoming.fraghdr) \
+ - priv->incoming.frag.bytes_read; \
+ \
+ __socket_proto_reset_pending (priv); \
+ \
+ priv->incoming.frag.pending_vector->iov_len = \
+ remaining_fragsize > size ? size : remaining_fragsize; \
+ \
+ priv->incoming.frag.remaining_size = \
+ size - priv->incoming.frag.pending_vector->iov_len; \
+ \
+} while (0);
+
+
+/* This will be used in a switch case and breaks from the switch case if all
+ * the pending data is not read.
+ */
+#define __socket_proto_read(priv, ret) \
+ { \
+ size_t bytes_read = 0; \
+ \
+ __socket_proto_update_pending (priv); \
+ \
+ ret = __socket_readv (this, \
+ priv->incoming.pending_vector, 1, \
+ &priv->incoming.pending_vector, \
+ &priv->incoming.pending_count, \
+ &bytes_read); \
+ if (ret == -1) { \
+ gf_log (this->name, GF_LOG_TRACE, \
+ "reading from socket failed. Error (%s), " \
+ "peer (%s)", strerror (errno), \
+ this->peerinfo.identifier); \
+ break; \
+ } \
+ __socket_proto_update_priv_after_read (priv, ret, bytes_read); \
+ }
+
+
+int socket_init (rpc_transport_t *this);
+
+/*
+ * return value:
+ * 0 = success (completed)
+ * -1 = error
+ * > 0 = incomplete
+ */
+
+int
+__socket_rwv (rpc_transport_t *this, struct iovec *vector, int count,
+ struct iovec **pending_vector, int *pending_count, size_t *bytes,
+ int write)
+{
+ socket_private_t *priv = NULL;
+ int sock = -1;
+ int ret = -1;
+ struct iovec *opvector = NULL;
+ int opcount = 0;
+ int moved = 0;
+
+ priv = this->private;
+ sock = priv->sock;
+
+ opvector = vector;
+ opcount = count;
+
+ if (bytes != NULL) {
+ *bytes = 0;
+ }
+
+ while (opcount) {
+ if (write) {
+ ret = writev (sock, opvector, opcount);
+
+ if (ret == 0 || (ret == -1 && errno == EAGAIN)) {
+ /* done for now */
+ break;
+ }
+ } else {
+ ret = readv (sock, opvector, opcount);
+ if (ret == -1 && errno == EAGAIN) {
+ /* done for now */
+ break;
+ }
+ }
+
+ if (ret == 0) {
+ /* Mostly due to 'umount' in client */
+
+ gf_log (this->name, GF_LOG_TRACE,
+ "EOF from peer %s", this->peerinfo.identifier);
+ opcount = -1;
+ errno = ENOTCONN;
+ break;
+ }
+ if (ret == -1) {
+ if (errno == EINTR)
+ continue;
+
+ gf_log (this->name, GF_LOG_TRACE,
+ "%s failed (%s)", write ? "writev" : "readv",
+ strerror (errno));
+ opcount = -1;
+ break;
+ }
+
+ if (bytes != NULL) {
+ *bytes += ret;
+ }
+
+ moved = 0;
+
+ while (moved < ret) {
+ if ((ret - moved) >= opvector[0].iov_len) {
+ moved += opvector[0].iov_len;
+ opvector++;
+ opcount--;
+ } else {
+ opvector[0].iov_len -= (ret - moved);
+ opvector[0].iov_base += (ret - moved);
+ moved += (ret - moved);
+ }
+ while (opcount && !opvector[0].iov_len) {
+ opvector++;
+ opcount--;
+ }
+ }
+ }
+
+ if (pending_vector)
+ *pending_vector = opvector;
+
+ if (pending_count)
+ *pending_count = opcount;
+
+ return opcount;
+}
+
+
+int
+__socket_readv (rpc_transport_t *this, struct iovec *vector, int count,
+ struct iovec **pending_vector, int *pending_count,
+ size_t *bytes)
+{
+ int ret = -1;
+
+ ret = __socket_rwv (this, vector, count,
+ pending_vector, pending_count, bytes, 0);
+
+ return ret;
+}
+
+
+int
+__socket_writev (rpc_transport_t *this, struct iovec *vector, int count,
+ struct iovec **pending_vector, int *pending_count)
+{
+ int ret = -1;
+
+ ret = __socket_rwv (this, vector, count,
+ pending_vector, pending_count, NULL, 1);
+
+ return ret;
+}
+
+
+int
+__socket_disconnect (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+
+ priv = this->private;
+
+ if (priv->sock != -1) {
+ ret = shutdown (priv->sock, SHUT_RDWR);
+ priv->connected = -1;
+ gf_log (this->name, GF_LOG_TRACE,
+ "shutdown() returned %d. set connection state to -1",
+ ret);
+ }
+
+ return ret;
+}
+
+
+int
+__socket_server_bind (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+ int opt = 1;
+
+ priv = this->private;
+
+ ret = setsockopt (priv->sock, SOL_SOCKET, SO_REUSEADDR,
+ &opt, sizeof (opt));
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setsockopt() for SO_REUSEADDR failed (%s)",
+ strerror (errno));
+ }
+
+ ret = bind (priv->sock, (struct sockaddr *)&this->myinfo.sockaddr,
+ this->myinfo.sockaddr_len);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "binding to %s failed: %s",
+ this->myinfo.identifier, strerror (errno));
+ if (errno == EADDRINUSE) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Port is already in use");
+ }
+ }
+
+ return ret;
+}
+
+
+int
+__socket_nonblock (int fd)
+{
+ int flags = 0;
+ int ret = -1;
+
+ flags = fcntl (fd, F_GETFL);
+
+ if (flags != -1)
+ ret = fcntl (fd, F_SETFL, flags | O_NONBLOCK);
+
+ return ret;
+}
+
+
+int
+__socket_nodelay (int fd)
+{
+ int on = 1;
+ int ret = -1;
+
+ ret = setsockopt (fd, IPPROTO_TCP, TCP_NODELAY,
+ &on, sizeof (on));
+ if (!ret)
+ gf_log ("", GF_LOG_TRACE,
+ "NODELAY enabled for socket %d", fd);
+
+ return ret;
+}
+
+int
+__socket_connect_finish (int fd)
+{
+ int ret = -1;
+ int optval = 0;
+ socklen_t optlen = sizeof (int);
+
+ ret = getsockopt (fd, SOL_SOCKET, SO_ERROR, (void *)&optval, &optlen);
+
+ if (ret == 0 && optval) {
+ errno = optval;
+ ret = -1;
+ }
+
+ return ret;
+}
+
+
+void
+__socket_reset (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+
+ priv = this->private;
+
+ /* TODO: use mem-pool on incoming data */
+
+ if (priv->incoming.iobuf) {
+ iobuf_unref (priv->incoming.iobuf);
+ }
+
+ if (priv->incoming.vectoriob) {
+ iobuf_unref (priv->incoming.vectoriob);
+ }
+
+ memset (&priv->incoming, 0, sizeof (priv->incoming));
+
+ event_unregister (this->ctx->event_pool, priv->sock, priv->idx);
+
+ close (priv->sock);
+ priv->sock = -1;
+ priv->idx = -1;
+ priv->connected = -1;
+}
+
+
+struct ioq *
+__socket_ioq_new (rpc_transport_t *this, rpc_transport_msg_t *msg)
+{
+ socket_private_t *priv = NULL;
+ struct ioq *entry = NULL;
+ int count = 0;
+
+ priv = this->private;
+
+ /* TODO: use mem-pool */
+ entry = GF_CALLOC (1, sizeof (*entry), gf_common_mt_ioq);
+ if (!entry)
+ return NULL;
+
+ count = msg->rpchdrcount + msg->proghdrcount + msg->progpayloadcount;
+
+ assert (count <= MAX_IOVEC);
+
+ if (msg->rpchdr != NULL) {
+ memcpy (&entry->vector[0], msg->rpchdr,
+ sizeof (struct iovec) * msg->rpchdrcount);
+ entry->count += msg->rpchdrcount;
+ }
+
+ if (msg->proghdr != NULL) {
+ memcpy (&entry->vector[entry->count], msg->proghdr,
+ sizeof (struct iovec) * msg->proghdrcount);
+ entry->count += msg->proghdrcount;
+ }
+
+ if (msg->progpayload != NULL) {
+ memcpy (&entry->vector[entry->count], msg->progpayload,
+ sizeof (struct iovec) * msg->progpayloadcount);
+ entry->count += msg->progpayloadcount;
+ }
+
+ entry->pending_vector = entry->vector;
+ entry->pending_count = entry->count;
+
+ if (msg->iobref != NULL)
+ entry->iobref = iobref_ref (msg->iobref);
+
+ INIT_LIST_HEAD (&entry->list);
+
+ return entry;
+}
+
+
+void
+__socket_ioq_entry_free (struct ioq *entry)
+{
+ list_del_init (&entry->list);
+ if (entry->iobref)
+ iobref_unref (entry->iobref);
+
+ /* TODO: use mem-pool */
+ GF_FREE (entry);
+}
+
+
+void
+__socket_ioq_flush (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ struct ioq *entry = NULL;
+
+ priv = this->private;
+
+ while (!list_empty (&priv->ioq)) {
+ entry = priv->ioq_next;
+ __socket_ioq_entry_free (entry);
+ }
+
+ return;
+}
+
+
+int
+__socket_ioq_churn_entry (rpc_transport_t *this, struct ioq *entry)
+{
+ int ret = -1;
+
+ ret = __socket_writev (this, entry->pending_vector,
+ entry->pending_count,
+ &entry->pending_vector,
+ &entry->pending_count);
+
+ if (ret == 0) {
+ /* current entry was completely written */
+ assert (entry->pending_count == 0);
+ __socket_ioq_entry_free (entry);
+ }
+
+ return ret;
+}
+
+
+int
+__socket_ioq_churn (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ struct ioq *entry = NULL;
+
+ priv = this->private;
+
+ while (!list_empty (&priv->ioq)) {
+ /* pick next entry */
+ entry = priv->ioq_next;
+
+ ret = __socket_ioq_churn_entry (this, entry);
+
+ if (ret != 0)
+ break;
+ }
+
+ if (list_empty (&priv->ioq)) {
+ /* all pending writes done, not interested in POLLOUT */
+ priv->idx = event_select_on (this->ctx->event_pool,
+ priv->sock, priv->idx, -1, 0);
+ }
+
+ return ret;
+}
+
+
+int
+socket_event_poll_err (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ __socket_ioq_flush (this);
+ __socket_reset (this);
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ rpc_transport_notify (this, RPC_TRANSPORT_DISCONNECT, this);
+
+ return ret;
+}
+
+
+int
+socket_event_poll_out (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->connected == 1) {
+ ret = __socket_ioq_churn (this);
+
+ if (ret == -1) {
+ __socket_disconnect (this);
+ }
+ }
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ ret = rpc_transport_notify (this, RPC_TRANSPORT_MSG_SENT, NULL);
+
+ return ret;
+}
+
+
+inline int
+__socket_read_simple_msg (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ uint32_t remaining_size = 0;
+ size_t bytes_read = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.simple_state) {
+
+ case SP_STATE_SIMPLE_MSG_INIT:
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ __socket_proto_init_pending (priv, remaining_size);
+
+ priv->incoming.frag.simple_state =
+ SP_STATE_READING_SIMPLE_MSG;
+
+ /* fall through */
+
+ case SP_STATE_READING_SIMPLE_MSG:
+ ret = 0;
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if (remaining_size > 0) {
+ ret = __socket_readv (this,
+ priv->incoming.pending_vector, 1,
+ &priv->incoming.pending_vector,
+ &priv->incoming.pending_count,
+ &bytes_read);
+ }
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_TRACE,
+ "reading from socket failed. Error (%s), "
+ "peer (%s)", strerror (errno),
+ this->peerinfo.identifier);
+ break;
+ }
+
+ priv->incoming.frag.bytes_read += bytes_read;
+ priv->incoming.frag.fragcurrent += bytes_read;
+
+ if (ret > 0) {
+ gf_log (this->name, GF_LOG_TRACE,
+ "partial read on non-blocking socket.");
+ break;
+ }
+
+ if (ret == 0) {
+ priv->incoming.frag.simple_state
+ = SP_STATE_SIMPLE_MSG_INIT;
+ }
+ }
+
+ return ret;
+}
+
+
+inline int
+__socket_read_simple_request (rpc_transport_t *this)
+{
+ return __socket_read_simple_msg (this);
+}
+
+
+#define rpc_cred_addr(buf) (buf + RPC_MSGTYPE_SIZE + RPC_CALL_BODY_SIZE - 4)
+
+#define rpc_verf_addr(fragcurrent) (fragcurrent - 4)
+
+
+inline int
+__socket_read_vectored_request (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ uint32_t credlen = 0, verflen = 0;
+ char *addr = NULL;
+ struct iobuf *iobuf = NULL;
+ uint32_t remaining_size = 0;
+ uint32_t gluster_write_proc_len = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.call_body.request.vector_state) {
+ case SP_STATE_VECTORED_REQUEST_INIT:
+ addr = rpc_cred_addr (iobuf_ptr (priv->incoming.iobuf));
+
+ /* also read verf flavour and verflen */
+ credlen = ntoh32 (*((uint32_t *)addr))
+ + RPC_AUTH_FLAVOUR_N_LENGTH_SIZE;
+
+ __socket_proto_init_pending (priv, credlen);
+
+ priv->incoming.frag.call_body.request.vector_state =
+ SP_STATE_READING_CREDBYTES;
+
+ /* fall through */
+
+ case SP_STATE_READING_CREDBYTES:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.request.vector_state =
+ SP_STATE_READ_CREDBYTES;
+
+ /* fall through */
+
+ case SP_STATE_READ_CREDBYTES:
+ addr = rpc_verf_addr (priv->incoming.frag.fragcurrent);
+
+ /* FIXME: Also handle procedures other than glusterfs-write
+ * here
+ */
+ /* also read proc-header */
+ gluster_write_proc_len = sizeof (gfs3_write_req);
+
+ verflen = ntoh32 (*((uint32_t *)addr))
+ + gluster_write_proc_len;
+
+ __socket_proto_init_pending (priv, verflen);
+
+ priv->incoming.frag.call_body.request.vector_state
+ = SP_STATE_READING_VERFBYTES;
+
+ /* fall through */
+
+ case SP_STATE_READING_VERFBYTES:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.request.vector_state =
+ SP_STATE_READ_VERFBYTES;
+
+ /* fall through */
+
+ case SP_STATE_READ_VERFBYTES:
+ if (priv->incoming.vectoriob == NULL) {
+ iobuf = iobuf_get (this->ctx->iobuf_pool);
+ if (!iobuf) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "unable to allocate IO buffer "
+ "for peer %s",
+ this->peerinfo.identifier);
+ ret = -1;
+ break;
+ }
+
+ priv->incoming.vectoriob = iobuf;
+ priv->incoming.frag.fragcurrent = iobuf_ptr (iobuf);
+ }
+
+ priv->incoming.frag.call_body.request.vector_state =
+ SP_STATE_READING_PROG;
+
+ /* fall through */
+
+ case SP_STATE_READING_PROG:
+ /* now read the remaining rpc msg into buffer pointed by
+ * fragcurrent
+ */
+
+ ret = __socket_read_simple_msg (this);
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if ((ret == -1)
+ || ((ret == 0)
+ && (remaining_size == 0)
+ && RPC_LASTFRAG (priv->incoming.fraghdr))) {
+ priv->incoming.frag.call_body.request.vector_state
+ = SP_STATE_VECTORED_REQUEST_INIT;
+ priv->incoming.vectoriob_size
+ = (unsigned long)priv->incoming.frag.fragcurrent
+ - (unsigned long)iobuf_ptr (priv->incoming.vectoriob);
+ }
+ break;
+ }
+
+ return ret;
+}
+
+
+#define rpc_msgtype_addr(buf) (buf + 4)
+
+#define rpc_prognum_addr(buf) (buf + RPC_MSGTYPE_SIZE + 4)
+
+#define rpc_procnum_addr(buf) (buf + RPC_MSGTYPE_SIZE + 12)
+
+
+inline int
+__socket_read_request (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ uint32_t prognum = 0, procnum = 0;
+ uint32_t remaining_size = 0;
+ int ret = -1;
+ char *buf = NULL;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.call_body.request.header_state) {
+
+ case SP_STATE_REQUEST_HEADER_INIT:
+
+ __socket_proto_init_pending (priv, RPC_CALL_BODY_SIZE);
+
+ priv->incoming.frag.call_body.request.header_state
+ = SP_STATE_READING_RPCHDR1;
+
+ /* fall through */
+
+ case SP_STATE_READING_RPCHDR1:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.request.header_state =
+ SP_STATE_READ_RPCHDR1;
+
+ /* fall through */
+
+ case SP_STATE_READ_RPCHDR1:
+ buf = rpc_prognum_addr (iobuf_ptr (priv->incoming.iobuf));
+ prognum = ntoh32 (*((uint32_t *)buf));
+
+ buf = rpc_procnum_addr (iobuf_ptr (priv->incoming.iobuf));
+ procnum = ntoh32 (*((uint32_t *)buf));
+
+ if ((prognum == GLUSTER3_1_FOP_PROGRAM)
+ && (procnum == GF_FOP_WRITE)) {
+ ret = __socket_read_vectored_request (this);
+ } else {
+ ret = __socket_read_simple_request (this);
+ }
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if ((ret == -1)
+ || ((ret == 0)
+ && (remaining_size == 0)
+ && (RPC_LASTFRAG (priv->incoming.fraghdr)))) {
+ priv->incoming.frag.call_body.request.header_state =
+ SP_STATE_REQUEST_HEADER_INIT;
+ }
+
+ break;
+ }
+
+ return ret;
+}
+
+
+inline int
+__socket_read_accepted_successful_reply (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ struct iobuf *iobuf = NULL;
+ uint32_t gluster_read_rsp_hdr_len = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.call_body.reply.accepted_success_state) {
+
+ case SP_STATE_ACCEPTED_SUCCESS_REPLY_INIT:
+ gluster_read_rsp_hdr_len = sizeof (gfs3_read_rsp);
+
+ __socket_proto_init_pending (priv, gluster_read_rsp_hdr_len);
+
+ priv->incoming.frag.call_body.reply.accepted_success_state
+ = SP_STATE_READING_PROC_HEADER;
+
+ /* fall through */
+
+ case SP_STATE_READING_PROC_HEADER:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.reply.accepted_success_state
+ = SP_STATE_READ_PROC_HEADER;
+
+ /* fall through */
+
+ case SP_STATE_READ_PROC_HEADER:
+ if (priv->incoming.vectoriob == NULL) {
+ iobuf = iobuf_get (this->ctx->iobuf_pool);
+ if (iobuf == NULL) {
+ ret = -1;
+ goto out;
+ }
+
+ priv->incoming.vectoriob = iobuf;
+ }
+
+ priv->incoming.frag.fragcurrent
+ = iobuf_ptr (priv->incoming.vectoriob);
+
+ /* now read the entire remaining msg into new iobuf */
+ ret = __socket_read_simple_msg (this);
+ if ((ret == -1)
+ || ((ret == 0)
+ && RPC_LASTFRAG (priv->incoming.fraghdr))) {
+ priv->incoming.frag.call_body.reply.accepted_success_state
+ = SP_STATE_ACCEPTED_SUCCESS_REPLY_INIT;
+ }
+
+ break;
+ }
+
+out:
+ return ret;
+}
+
+#define rpc_reply_verflen_addr(fragcurrent) ((char *)fragcurrent - 4)
+#define rpc_reply_accept_status_addr(fragcurrent) ((char *)fragcurrent - 4)
+
+inline int
+__socket_read_accepted_reply (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+ char *buf = NULL;
+ uint32_t verflen = 0, len = 0;
+ uint32_t remaining_size = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.call_body.reply.accepted_state) {
+
+ case SP_STATE_ACCEPTED_REPLY_INIT:
+ __socket_proto_init_pending (priv,
+ RPC_AUTH_FLAVOUR_N_LENGTH_SIZE);
+
+ priv->incoming.frag.call_body.reply.accepted_state
+ = SP_STATE_READING_REPLY_VERFLEN;
+
+ /* fall through */
+
+ case SP_STATE_READING_REPLY_VERFLEN:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.reply.accepted_state
+ = SP_STATE_READ_REPLY_VERFLEN;
+
+ /* fall through */
+
+ case SP_STATE_READ_REPLY_VERFLEN:
+ buf = rpc_reply_verflen_addr (priv->incoming.frag.fragcurrent);
+
+ verflen = ntoh32 (*((uint32_t *) buf));
+
+ /* also read accept status along with verf data */
+ len = verflen + RPC_ACCEPT_STATUS_LEN;
+
+ __socket_proto_init_pending (priv, len);
+
+ priv->incoming.frag.call_body.reply.accepted_state
+ = SP_STATE_READING_REPLY_VERFBYTES;
+
+ /* fall through */
+
+ case SP_STATE_READING_REPLY_VERFBYTES:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.call_body.reply.accepted_state
+ = SP_STATE_READ_REPLY_VERFBYTES;
+
+ buf = rpc_reply_accept_status_addr (priv->incoming.frag.fragcurrent);
+
+ priv->incoming.frag.call_body.reply.accept_status
+ = ntoh32 (*(uint32_t *) buf);
+
+ /* fall through */
+
+ case SP_STATE_READ_REPLY_VERFBYTES:
+
+ if (priv->incoming.frag.call_body.reply.accept_status
+ == SUCCESS) {
+ ret = __socket_read_accepted_successful_reply (this);
+ } else {
+ /* read entire remaining msg into buffer pointed to by
+ * fragcurrent
+ */
+ ret = __socket_read_simple_msg (this);
+ }
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if ((ret == -1)
+ || ((ret == 0)
+ && (remaining_size == 0)
+ && (RPC_LASTFRAG (priv->incoming.fraghdr)))) {
+ priv->incoming.frag.call_body.reply.accepted_state
+ = SP_STATE_ACCEPTED_REPLY_INIT;
+ }
+
+ break;
+ }
+
+ return ret;
+}
+
+
+inline int
+__socket_read_denied_reply (rpc_transport_t *this)
+{
+ return __socket_read_simple_msg (this);
+}
+
+
+#define rpc_reply_status_addr(fragcurrent) ((char *)fragcurrent - 4)
+
+
+inline int
+__socket_read_vectored_reply (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ char *buf = NULL;
+ uint32_t remaining_size = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.call_body.reply.status_state) {
+
+ case SP_STATE_ACCEPTED_REPLY_INIT:
+ __socket_proto_init_pending (priv, RPC_REPLY_STATUS_SIZE);
+
+ priv->incoming.frag.call_body.reply.status_state
+ = SP_STATE_READING_REPLY_STATUS;
+
+ /* fall through */
+
+ case SP_STATE_READING_REPLY_STATUS:
+ __socket_proto_read (priv, ret);
+
+ buf = rpc_reply_status_addr (priv->incoming.frag.fragcurrent);
+
+ priv->incoming.frag.call_body.reply.accept_status
+ = ntoh32 (*((uint32_t *) buf));
+
+ priv->incoming.frag.call_body.reply.status_state
+ = SP_STATE_READ_REPLY_STATUS;
+
+ /* fall through */
+
+ case SP_STATE_READ_REPLY_STATUS:
+ if (priv->incoming.frag.call_body.reply.accept_status
+ == MSG_ACCEPTED) {
+ ret = __socket_read_accepted_reply (this);
+ } else {
+ ret = __socket_read_denied_reply (this);
+ }
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if ((ret == -1)
+ || ((ret == 0)
+ && (remaining_size == 0)
+ && (RPC_LASTFRAG (priv->incoming.fraghdr)))) {
+ priv->incoming.frag.call_body.reply.status_state
+ = SP_STATE_ACCEPTED_REPLY_INIT;
+ }
+ break;
+ }
+
+ return ret;
+}
+
+
+inline int
+__socket_read_simple_reply (rpc_transport_t *this)
+{
+ return __socket_read_simple_msg (this);
+}
+
+#define rpc_xid_addr(buf) (buf)
+
+inline int
+__socket_read_reply (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ char *buf = NULL;
+ int32_t ret = -1;
+ rpc_request_info_t *request_info = NULL;
+
+ priv = this->private;
+
+ buf = rpc_xid_addr (iobuf_ptr (priv->incoming.iobuf));
+
+ request_info = GF_CALLOC (1, sizeof (*request_info), gf_common_mt_rpc_trans_reqinfo_t);
+ if (request_info == NULL) {
+ gf_log (this->name, GF_LOG_ERROR, "out of memory");
+ goto out;
+ }
+
+ priv->incoming.request_info = request_info;
+
+ request_info->xid = ntoh32 (*((uint32_t *) buf));
+
+ /* release priv->lock, so as to avoid deadlock b/w conn->lock and
+ * priv->lock, since we are doing an upcall here.
+ */
+ pthread_mutex_unlock (&priv->lock);
+ {
+ ret = rpc_transport_notify (this, RPC_TRANSPORT_MAP_XID_REQUEST,
+ priv->incoming.request_info);
+ }
+ pthread_mutex_lock (&priv->lock);
+
+ if (ret == -1) {
+ goto out;
+ }
+
+ if ((request_info->prognum == GLUSTER3_1_FOP_PROGRAM)
+ && (request_info->procnum == GF_FOP_READ)) {
+ if (request_info->rsp.rspbuf != NULL) {
+ priv->incoming.vectoriob
+ = iobuf_ref (request_info->rsp.rspbuf);
+ }
+
+ ret = __socket_read_vectored_reply (this);
+ } else {
+ ret = __socket_read_simple_reply (this);
+ }
+out:
+ return ret;
+}
+
+
+/* returns the number of bytes yet to be read in a fragment */
+inline int
+__socket_read_frag (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int32_t ret = 0;
+ char *buf = NULL;
+ uint32_t remaining_size = 0;
+
+ priv = this->private;
+
+ switch (priv->incoming.frag.state) {
+ case SP_STATE_NADA:
+ __socket_proto_init_pending (priv, RPC_MSGTYPE_SIZE);
+
+ priv->incoming.frag.state = SP_STATE_READING_MSGTYPE;
+
+ /* fall through */
+
+ case SP_STATE_READING_MSGTYPE:
+ __socket_proto_read (priv, ret);
+
+ priv->incoming.frag.state = SP_STATE_READ_MSGTYPE;
+ /* fall through */
+
+ case SP_STATE_READ_MSGTYPE:
+ buf = rpc_msgtype_addr (iobuf_ptr (priv->incoming.iobuf));
+ priv->incoming.msg_type = ntoh32 (*((uint32_t *)buf));
+
+ if (priv->incoming.msg_type == CALL) {
+ ret = __socket_read_request (this);
+ } else if (priv->incoming.msg_type == REPLY) {
+ ret = __socket_read_reply (this);
+ } else {
+ gf_log ("rpc", GF_LOG_ERROR,
+ "wrong MSG-TYPE (%d) received",
+ priv->incoming.msg_type);
+ ret = -1;
+ }
+
+ remaining_size = RPC_FRAGSIZE (priv->incoming.fraghdr)
+ - priv->incoming.frag.bytes_read;
+
+ if ((ret == -1)
+ || ((ret == 0)
+ && (remaining_size == 0)
+ && (RPC_LASTFRAG (priv->incoming.fraghdr)))) {
+ priv->incoming.frag.state = SP_STATE_NADA;
+ }
+
+ break;
+ }
+
+ return ret;
+}
+
+
+inline
+void __socket_reset_priv (socket_private_t *priv)
+{
+ if (priv->incoming.iobuf) {
+ iobuf_unref (priv->incoming.iobuf);
+ priv->incoming.iobuf = NULL;
+ }
+
+ if (priv->incoming.vectoriob) {
+ iobuf_unref (priv->incoming.vectoriob);
+ priv->incoming.vectoriob = NULL;
+ }
+}
+
+
+int
+__socket_proto_state_machine (rpc_transport_t *this,
+ rpc_transport_pollin_t **pollin)
+{
+ int ret = -1;
+ socket_private_t *priv = NULL;
+ struct iobuf *iobuf = NULL;
+
+ priv = this->private;
+ while (priv->incoming.record_state != SP_STATE_COMPLETE) {
+ switch (priv->incoming.record_state) {
+
+ case SP_STATE_NADA:
+ iobuf = iobuf_get (this->ctx->iobuf_pool);
+ if (!iobuf) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "unable to allocate IO buffer "
+ "for peer %s",
+ this->peerinfo.identifier);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ priv->incoming.iobuf = iobuf;
+ priv->incoming.iobuf_size = 0;
+ priv->incoming.vectoriob_size = 0;
+
+ priv->incoming.pending_vector = priv->incoming.vector;
+ priv->incoming.pending_vector->iov_base =
+ &priv->incoming.fraghdr;
+
+ priv->incoming.frag.fragcurrent = iobuf_ptr (iobuf);
+ priv->incoming.pending_vector->iov_len =
+ sizeof (priv->incoming.fraghdr);
+
+ priv->incoming.record_state = SP_STATE_READING_FRAGHDR;
+
+ /* fall through */
+
+ case SP_STATE_READING_FRAGHDR:
+ ret = __socket_readv (this,
+ priv->incoming.pending_vector, 1,
+ &priv->incoming.pending_vector,
+ &priv->incoming.pending_count,
+ NULL);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_TRACE,
+ "reading from socket failed. Error (%s), "
+ "peer (%s)", strerror (errno),
+ this->peerinfo.identifier);
+ goto out;
+ }
+
+ if (ret > 0) {
+ gf_log (this->name, GF_LOG_TRACE, "partial "
+ "fragment header read");
+ goto out;
+ }
+
+ if (ret == 0) {
+ priv->incoming.record_state =
+ SP_STATE_READ_FRAGHDR;
+ }
+ /* fall through */
+
+ case SP_STATE_READ_FRAGHDR:
+
+ priv->incoming.fraghdr = ntoh32 (priv->incoming.fraghdr);
+ priv->incoming.record_state = SP_STATE_READING_FRAG;
+ priv->incoming.total_bytes_read
+ += RPC_FRAGSIZE(priv->incoming.fraghdr);
+ /* fall through */
+
+ case SP_STATE_READING_FRAG:
+ ret = __socket_read_frag (this);
+
+ if ((ret == -1)
+ || (priv->incoming.frag.bytes_read !=
+ RPC_FRAGSIZE (priv->incoming.fraghdr))) {
+ goto out;
+ }
+
+ priv->incoming.frag.bytes_read = 0;
+
+ if (!RPC_LASTFRAG (priv->incoming.fraghdr)) {
+ priv->incoming.record_state =
+ SP_STATE_READING_FRAGHDR;
+ break;
+ }
+
+ /* we've read the entire rpc record, notify the
+ * upper layers.
+ */
+ if (pollin != NULL) {
+ priv->incoming.iobuf_size
+ = priv->incoming.total_bytes_read
+ - priv->incoming.vectoriob_size;
+
+ *pollin = rpc_transport_pollin_alloc (this,
+ priv->incoming.iobuf,
+ priv->incoming.iobuf_size,
+ priv->incoming.vectoriob,
+ priv->incoming.vectoriob_size,
+ priv->incoming.request_info);
+ if (*pollin == NULL) {
+ ret = -1;
+ goto out;
+ }
+
+ priv->incoming.request_info = NULL;
+ }
+ priv->incoming.record_state = SP_STATE_COMPLETE;
+ break;
+
+ case SP_STATE_COMPLETE:
+ /* control should not reach here */
+ gf_log (this->name, GF_LOG_DEBUG, "control reached to "
+ "SP_STATE_COMPLETE, which should not have "
+ "happened");
+ break;
+ }
+ }
+
+ if (priv->incoming.record_state == SP_STATE_COMPLETE) {
+ priv->incoming.record_state = SP_STATE_NADA;
+ __socket_reset_priv (priv);
+ }
+
+out:
+ if ((ret == -1) && (errno == EAGAIN)) {
+ ret = 0;
+ }
+ return ret;
+}
+
+
+int
+socket_proto_state_machine (rpc_transport_t *this,
+ rpc_transport_pollin_t **pollin)
+{
+ socket_private_t *priv = NULL;
+ int ret = 0;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ ret = __socket_proto_state_machine (this, pollin);
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+int
+socket_event_poll_in (rpc_transport_t *this)
+{
+ int ret = -1;
+ rpc_transport_pollin_t *pollin = NULL;
+
+ ret = socket_proto_state_machine (this, &pollin);
+
+ if (pollin != NULL) {
+ ret = rpc_transport_notify (this, RPC_TRANSPORT_MSG_RECEIVED,
+ pollin);
+
+ rpc_transport_pollin_destroy (pollin);
+ }
+
+ return ret;
+}
+
+
+int
+socket_connect_finish (rpc_transport_t *this)
+{
+ int ret = -1;
+ socket_private_t *priv = NULL;
+ rpc_transport_event_t event = 0;
+ char notify_rpc = 0;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->connected)
+ goto unlock;
+
+ ret = __socket_connect_finish (priv->sock);
+
+ if (ret == -1 && errno == EINPROGRESS)
+ ret = 1;
+
+ if (ret == -1 && errno != EINPROGRESS) {
+ if (!priv->connect_finish_log) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "connection to %s failed (%s)",
+ this->peerinfo.identifier,
+ strerror (errno));
+ priv->connect_finish_log = 1;
+ }
+ __socket_disconnect (this);
+ notify_rpc = 1;
+ event = RPC_TRANSPORT_DISCONNECT;
+ goto unlock;
+ }
+
+ if (ret == 0) {
+ notify_rpc = 1;
+
+ this->myinfo.sockaddr_len =
+ sizeof (this->myinfo.sockaddr);
+
+ ret = getsockname (priv->sock,
+ SA (&this->myinfo.sockaddr),
+ &this->myinfo.sockaddr_len);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "getsockname on (%d) failed (%s)",
+ priv->sock, strerror (errno));
+ __socket_disconnect (this);
+ event = GF_EVENT_POLLERR;
+ goto unlock;
+ }
+
+ priv->connected = 1;
+ priv->connect_finish_log = 0;
+ event = RPC_TRANSPORT_CONNECT;
+ get_transport_identifiers (this);
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ if (notify_rpc) {
+ rpc_transport_notify (this, event, this);
+ }
+
+ return 0;
+}
+
+
+/* reads rpc_requests during pollin */
+int
+socket_event_handler (int fd, int idx, void *data,
+ int poll_in, int poll_out, int poll_err)
+{
+ rpc_transport_t *this = NULL;
+ socket_private_t *priv = NULL;
+ int ret = 0;
+
+ this = data;
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ priv->idx = idx;
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ if (!priv->connected) {
+ ret = socket_connect_finish (this);
+ }
+
+ if (!ret && poll_out) {
+ ret = socket_event_poll_out (this);
+ }
+
+ if (!ret && poll_in) {
+ ret = socket_event_poll_in (this);
+ }
+
+ if ((ret < 0) || poll_err) {
+ gf_log ("transport", GF_LOG_TRACE, "disconnecting now");
+ socket_event_poll_err (this);
+ rpc_transport_unref (this);
+ }
+
+ return 0;
+}
+
+
+int
+socket_server_event_handler (int fd, int idx, void *data,
+ int poll_in, int poll_out, int poll_err)
+{
+ rpc_transport_t *this = NULL;
+ socket_private_t *priv = NULL;
+ int ret = 0;
+ int new_sock = -1;
+ rpc_transport_t *new_trans = NULL;
+ struct sockaddr_storage new_sockaddr = {0, };
+ socklen_t addrlen = sizeof (new_sockaddr);
+ socket_private_t *new_priv = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = data;
+ priv = this->private;
+ ctx = this->ctx;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ priv->idx = idx;
+
+ if (poll_in) {
+ new_sock = accept (priv->sock, SA (&new_sockaddr),
+ &addrlen);
+
+ if (new_sock == -1)
+ goto unlock;
+
+ if (!priv->bio) {
+ ret = __socket_nonblock (new_sock);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "NBIO on %d failed (%s)",
+ new_sock, strerror (errno));
+
+ close (new_sock);
+ goto unlock;
+ }
+ }
+
+ if (priv->nodelay) {
+ ret = __socket_nodelay (new_sock);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setsockopt() failed for "
+ "NODELAY (%s)",
+ strerror (errno));
+ }
+ }
+
+ new_trans = GF_CALLOC (1, sizeof (*new_trans),
+ gf_common_mt_rpc_trans_t);
+ new_trans->fini = this->fini;
+ new_trans->name = gf_strdup (this->name);
+
+ memcpy (&new_trans->peerinfo.sockaddr, &new_sockaddr,
+ addrlen);
+ new_trans->peerinfo.sockaddr_len = addrlen;
+
+ new_trans->myinfo.sockaddr_len =
+ sizeof (new_trans->myinfo.sockaddr);
+
+ ret = getsockname (new_sock,
+ SA (&new_trans->myinfo.sockaddr),
+ &new_trans->myinfo.sockaddr_len);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "getsockname on %d failed (%s)",
+ new_sock, strerror (errno));
+ close (new_sock);
+ goto unlock;
+ }
+
+ get_transport_identifiers (new_trans);
+ socket_init (new_trans);
+ new_trans->ops = this->ops;
+ new_trans->init = this->init;
+ new_trans->fini = this->fini;
+ new_trans->ctx = ctx;
+ new_trans->mydata = this->mydata;
+ new_trans->notify = this->notify;
+ new_priv = new_trans->private;
+
+ pthread_mutex_lock (&new_priv->lock);
+ {
+ new_priv->sock = new_sock;
+ new_priv->connected = 1;
+ rpc_transport_ref (new_trans);
+
+ new_priv->idx =
+ event_register (ctx->event_pool,
+ new_sock,
+ socket_event_handler,
+ new_trans, 1, 0);
+
+ if (new_priv->idx == -1)
+ ret = -1;
+ }
+ pthread_mutex_unlock (&new_priv->lock);
+ ret = rpc_transport_notify (this, RPC_TRANSPORT_ACCEPT, new_trans);
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+int
+socket_disconnect (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ ret = __socket_disconnect (this);
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+int
+socket_connect (rpc_transport_t *this)
+{
+ int ret = -1;
+ int sock = -1;
+ socket_private_t *priv = NULL;
+ struct sockaddr_storage sockaddr = {0, };
+ socklen_t sockaddr_len = 0;
+ glusterfs_ctx_t *ctx = NULL;
+ sa_family_t sa_family = {0, };
+
+ priv = this->private;
+ ctx = this->ctx;
+
+ if (!priv) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "connect() called on uninitialized transport");
+ goto err;
+ }
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ sock = priv->sock;
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ if (sock != -1) {
+ gf_log (this->name, GF_LOG_TRACE,
+ "connect () called on transport already connected");
+ ret = 0;
+ goto err;
+ }
+
+ ret = socket_client_get_remote_sockaddr (this, SA (&sockaddr),
+ &sockaddr_len, &sa_family);
+ if (ret == -1) {
+ /* logged inside client_get_remote_sockaddr */
+ goto err;
+ }
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->sock != -1) {
+ gf_log (this->name, GF_LOG_TRACE,
+ "connect() -- already connected");
+ goto unlock;
+ }
+
+ memcpy (&this->peerinfo.sockaddr, &sockaddr, sockaddr_len);
+ this->peerinfo.sockaddr_len = sockaddr_len;
+
+ priv->sock = socket (sa_family, SOCK_STREAM, 0);
+ if (priv->sock == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "socket creation failed (%s)",
+ strerror (errno));
+ goto unlock;
+ }
+
+ /* Cant help if setting socket options fails. We can continue
+ * working nonetheless.
+ */
+ if (setsockopt (priv->sock, SOL_SOCKET, SO_RCVBUF,
+ &priv->windowsize,
+ sizeof (priv->windowsize)) < 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setting receive window size failed: %d: %d: "
+ "%s", priv->sock, priv->windowsize,
+ strerror (errno));
+ }
+
+ if (setsockopt (priv->sock, SOL_SOCKET, SO_SNDBUF,
+ &priv->windowsize,
+ sizeof (priv->windowsize)) < 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setting send window size failed: %d: %d: "
+ "%s", priv->sock, priv->windowsize,
+ strerror (errno));
+ }
+
+
+ if (priv->nodelay && priv->lowlat) {
+ ret = __socket_nodelay (priv->sock);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setsockopt() failed for NODELAY (%s)",
+ strerror (errno));
+ }
+ }
+
+ if (!priv->bio) {
+ ret = __socket_nonblock (priv->sock);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "NBIO on %d failed (%s)",
+ priv->sock, strerror (errno));
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+ }
+
+ SA (&this->myinfo.sockaddr)->sa_family =
+ SA (&this->peerinfo.sockaddr)->sa_family;
+
+ ret = client_bind (this, SA (&this->myinfo.sockaddr),
+ &this->myinfo.sockaddr_len, priv->sock);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "client bind failed: %s", strerror (errno));
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+
+ ret = connect (priv->sock, SA (&this->peerinfo.sockaddr),
+ this->peerinfo.sockaddr_len);
+
+ if (ret == -1 && errno != EINPROGRESS) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "connection attempt failed (%s)",
+ strerror (errno));
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+
+ priv->connected = 0;
+
+ rpc_transport_ref (this);
+
+ priv->idx = event_register (ctx->event_pool, priv->sock,
+ socket_event_handler, this, 1, 1);
+ if (priv->idx == -1)
+ ret = -1;
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+err:
+ return ret;
+}
+
+
+int
+socket_listen (rpc_transport_t *this)
+{
+ socket_private_t * priv = NULL;
+ int ret = -1;
+ int sock = -1;
+ struct sockaddr_storage sockaddr;
+ socklen_t sockaddr_len;
+ peer_info_t *myinfo = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ sa_family_t sa_family = {0, };
+
+ priv = this->private;
+ myinfo = &this->myinfo;
+ ctx = this->ctx;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ sock = priv->sock;
+ }
+ pthread_mutex_unlock (&priv->lock);
+
+ if (sock != -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "alreading listening");
+ return ret;
+ }
+
+ ret = socket_server_get_local_sockaddr (this, SA (&sockaddr),
+ &sockaddr_len, &sa_family);
+ if (ret == -1) {
+ return ret;
+ }
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->sock != -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "already listening");
+ goto unlock;
+ }
+
+ memcpy (&myinfo->sockaddr, &sockaddr, sockaddr_len);
+ myinfo->sockaddr_len = sockaddr_len;
+
+ priv->sock = socket (sa_family, SOCK_STREAM, 0);
+
+ if (priv->sock == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "socket creation failed (%s)",
+ strerror (errno));
+ goto unlock;
+ }
+
+ /* Cant help if setting socket options fails. We can continue
+ * working nonetheless.
+ */
+ if (setsockopt (priv->sock, SOL_SOCKET, SO_RCVBUF,
+ &priv->windowsize,
+ sizeof (priv->windowsize)) < 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setting receive window size failed: %d: %d: "
+ "%s", priv->sock, priv->windowsize,
+ strerror (errno));
+ }
+
+ if (setsockopt (priv->sock, SOL_SOCKET, SO_SNDBUF,
+ &priv->windowsize,
+ sizeof (priv->windowsize)) < 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setting send window size failed: %d: %d: "
+ "%s", priv->sock, priv->windowsize,
+ strerror (errno));
+ }
+
+ if (priv->nodelay) {
+ ret = __socket_nodelay (priv->sock);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "setsockopt() failed for NODELAY (%s)",
+ strerror (errno));
+ }
+ }
+
+ if (!priv->bio) {
+ ret = __socket_nonblock (priv->sock);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "NBIO on %d failed (%s)",
+ priv->sock, strerror (errno));
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+ }
+
+ ret = __socket_server_bind (this);
+
+ if (ret == -1) {
+ /* logged inside __socket_server_bind() */
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+
+ ret = listen (priv->sock, 10);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "could not set socket %d to listen mode (%s)",
+ priv->sock, strerror (errno));
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+
+ rpc_transport_ref (this);
+
+ priv->idx = event_register (ctx->event_pool, priv->sock,
+ socket_server_event_handler,
+ this, 1, 0);
+
+ if (priv->idx == -1) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "could not register socket %d with events",
+ priv->sock);
+ ret = -1;
+ close (priv->sock);
+ priv->sock = -1;
+ goto unlock;
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+/* TODO: implement per transfer limit */
+#if 0
+int
+socket_submit (rpc_transport_t *this, char *buf, int len,
+ struct iovec *vector, int count,
+ struct iobref *iobref)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+ char need_poll_out = 0;
+ char need_append = 1;
+ struct ioq *entry = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ priv = this->private;
+ ctx = this->ctx;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->connected != 1) {
+ if (!priv->submit_log && !priv->connect_finish_log) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "not connected (priv->connected = %d)",
+ priv->connected);
+ priv->submit_log = 1;
+ }
+ goto unlock;
+ }
+
+ priv->submit_log = 0;
+ entry = __socket_ioq_new (this, buf, len, vector, count, iobref);
+ if (!entry)
+ goto unlock;
+
+ if (list_empty (&priv->ioq)) {
+ ret = __socket_ioq_churn_entry (this, entry);
+
+ if (ret == 0)
+ need_append = 0;
+
+ if (ret > 0)
+ need_poll_out = 1;
+ }
+
+ if (need_append) {
+ list_add_tail (&entry->list, &priv->ioq);
+ ret = 0;
+ }
+
+ if (need_poll_out) {
+ /* first entry to wait. continue writing on POLLOUT */
+ priv->idx = event_select_on (ctx->event_pool,
+ priv->sock,
+ priv->idx, -1, 1);
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+#endif
+
+
+int32_t
+socket_submit_request (rpc_transport_t *this, rpc_transport_req_t *req)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+ char need_poll_out = 0;
+ char need_append = 1;
+ struct ioq *entry = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ priv = this->private;
+ ctx = this->ctx;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->connected != 1) {
+ if (!priv->submit_log && !priv->connect_finish_log) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "not connected (priv->connected = %d)",
+ priv->connected);
+ priv->submit_log = 1;
+ }
+ goto unlock;
+ }
+
+ priv->submit_log = 0;
+ entry = __socket_ioq_new (this, &req->msg);
+ if (!entry)
+ goto unlock;
+
+ if (list_empty (&priv->ioq)) {
+ ret = __socket_ioq_churn_entry (this, entry);
+
+ if (ret == 0)
+ need_append = 0;
+
+ if (ret > 0)
+ need_poll_out = 1;
+ }
+
+ if (need_append) {
+ list_add_tail (&entry->list, &priv->ioq);
+ ret = 0;
+ }
+
+ if (need_poll_out) {
+ /* first entry to wait. continue writing on POLLOUT */
+ priv->idx = event_select_on (ctx->event_pool,
+ priv->sock,
+ priv->idx, -1, 1);
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+int32_t
+socket_submit_reply (rpc_transport_t *this, rpc_transport_reply_t *reply)
+{
+ socket_private_t *priv = NULL;
+ int ret = -1;
+ char need_poll_out = 0;
+ char need_append = 1;
+ struct ioq *entry = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ priv = this->private;
+ ctx = this->ctx;
+
+ pthread_mutex_lock (&priv->lock);
+ {
+ if (priv->connected != 1) {
+ if (!priv->submit_log && !priv->connect_finish_log) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "not connected (priv->connected = %d)",
+ priv->connected);
+ priv->submit_log = 1;
+ }
+ goto unlock;
+ }
+ priv->submit_log = 0;
+ entry = __socket_ioq_new (this, &reply->msg);
+ if (!entry)
+ goto unlock;
+ if (list_empty (&priv->ioq)) {
+ ret = __socket_ioq_churn_entry (this, entry);
+
+ if (ret == 0)
+ need_append = 0;
+
+ if (ret > 0)
+ need_poll_out = 1;
+ }
+
+ if (need_append) {
+ list_add_tail (&entry->list, &priv->ioq);
+ ret = 0;
+ }
+
+ if (need_poll_out) {
+ /* first entry to wait. continue writing on POLLOUT */
+ priv->idx = event_select_on (ctx->event_pool,
+ priv->sock,
+ priv->idx, -1, 1);
+ }
+ }
+
+unlock:
+ pthread_mutex_unlock (&priv->lock);
+
+ return ret;
+}
+
+
+int32_t
+socket_getpeername (rpc_transport_t *this, char *hostname, int hostlen)
+{
+ int32_t ret = -1;
+
+ if ((this == NULL) || (hostname == NULL)) {
+ goto out;
+ }
+
+ if (hostlen < (strlen (this->peerinfo.identifier) + 1)) {
+ goto out;
+ }
+
+ strcpy (hostname, this->peerinfo.identifier);
+ ret = 0;
+out:
+ return ret;
+}
+
+
+int32_t
+socket_getpeeraddr (rpc_transport_t *this, char *peeraddr, int addrlen,
+ struct sockaddr *sa, socklen_t salen)
+{
+ int32_t ret = -1;
+
+ if ((this == NULL) || (sa == NULL)) {
+ goto out;
+ }
+
+ *sa = *((struct sockaddr *)&this->peerinfo.sockaddr);
+
+ if (peeraddr != NULL) {
+ ret = socket_getpeername (this, peeraddr, addrlen);
+ }
+
+out:
+ return ret;
+}
+
+
+int32_t
+socket_getmyname (rpc_transport_t *this, char *hostname, int hostlen)
+{
+ int32_t ret = -1;
+
+ if ((this == NULL) || (hostname == NULL)) {
+ goto out;
+ }
+
+ if (hostlen < (strlen (this->myinfo.identifier) + 1)) {
+ goto out;
+ }
+
+ strcpy (hostname, this->myinfo.identifier);
+ ret = 0;
+out:
+ return ret;
+}
+
+
+int32_t
+socket_getmyaddr (rpc_transport_t *this, char *myaddr, int addrlen,
+ struct sockaddr *sa, socklen_t salen)
+{
+ int32_t ret = -1;
+
+ if ((this == NULL) || (sa == NULL)) {
+ goto out;
+ }
+
+ *sa = *((struct sockaddr *)&this->myinfo.sockaddr);
+
+ if (myaddr != NULL) {
+ ret = socket_getmyname (this, myaddr, addrlen);
+ }
+
+out:
+ return ret;
+}
+
+
+struct rpc_transport_ops tops = {
+ .listen = socket_listen,
+ .connect = socket_connect,
+ .disconnect = socket_disconnect,
+ .submit_request = socket_submit_request,
+ .submit_reply = socket_submit_reply,
+ .get_peername = socket_getpeername,
+ .get_peeraddr = socket_getpeeraddr,
+ .get_myname = socket_getmyname,
+ .get_myaddr = socket_getmyaddr
+};
+
+
+int
+socket_init (rpc_transport_t *this)
+{
+ socket_private_t *priv = NULL;
+ gf_boolean_t tmp_bool = 0;
+ uint64_t windowsize = GF_DEFAULT_SOCKET_WINDOW_SIZE;
+ char *optstr = NULL;
+
+ if (this->private) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "double init attempted");
+ return -1;
+ }
+
+ priv = GF_CALLOC (1, sizeof (*priv), gf_common_mt_socket_private_t);
+ if (!priv) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "calloc (1, %"GF_PRI_SIZET") returned NULL",
+ sizeof (*priv));
+ return -1;
+ }
+
+ pthread_mutex_init (&priv->lock, NULL);
+
+ priv->sock = -1;
+ priv->idx = -1;
+ priv->connected = -1;
+
+ INIT_LIST_HEAD (&priv->ioq);
+
+ if (dict_get (this->options, "non-blocking-io")) {
+ optstr = data_to_str (dict_get (this->options,
+ "non-blocking-io"));
+
+ if (gf_string2boolean (optstr, &tmp_bool) == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "'non-blocking-io' takes only boolean options,"
+ " not taking any action");
+ tmp_bool = 1;
+ }
+ priv->bio = 0;
+ if (!tmp_bool) {
+ priv->bio = 1;
+ gf_log (this->name, GF_LOG_WARNING,
+ "disabling non-blocking IO");
+ }
+ }
+
+ optstr = NULL;
+
+ // By default, we enable NODELAY
+ priv->nodelay = 1;
+ if (dict_get (this->options, "transport.socket.nodelay")) {
+ optstr = data_to_str (dict_get (this->options,
+ "transport.socket.nodelay"));
+
+ if (gf_string2boolean (optstr, &tmp_bool) == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "'transport.socket.nodelay' takes only "
+ "boolean options, not taking any action");
+ tmp_bool = 1;
+ }
+ if (!tmp_bool) {
+ priv->nodelay = 0;
+ gf_log (this->name, GF_LOG_DEBUG,
+ "disabling nodelay");
+ }
+ }
+
+
+ optstr = NULL;
+ if (dict_get_str (this->options, "transport.window-size",
+ &optstr) == 0) {
+ if (gf_string2bytesize (optstr, &windowsize) != 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "invalid number format: %s", optstr);
+ return -1;
+ }
+ }
+
+ optstr = NULL;
+
+ if (dict_get_str (this->options, "transport.socket.lowlat",
+ &optstr) == 0) {
+ priv->lowlat = 1;
+ }
+
+ priv->windowsize = (int)windowsize;
+ this->private = priv;
+
+ return 0;
+}
+
+
+void
+fini (rpc_transport_t *this)
+{
+ socket_private_t *priv = this->private;
+
+ gf_log (this->name, GF_LOG_TRACE,
+ "transport %p destroyed", this);
+
+ pthread_mutex_destroy (&priv->lock);
+
+ GF_FREE (this->name);
+ GF_FREE (priv);
+}
+
+
+int32_t
+init (rpc_transport_t *this)
+{
+ int ret = -1;
+
+ ret = socket_init (this);
+
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_DEBUG, "socket_init() failed");
+ }
+
+ return ret;
+}
+
+struct volume_options options[] = {
+ { .key = {"remote-port",
+ "transport.remote-port",
+ "transport.socket.remote-port"},
+ .type = GF_OPTION_TYPE_INT
+ },
+ { .key = {"transport.socket.listen-port", "listen-port"},
+ .type = GF_OPTION_TYPE_INT
+ },
+ { .key = {"transport.socket.bind-address", "bind-address" },
+ .type = GF_OPTION_TYPE_INTERNET_ADDRESS
+ },
+ { .key = {"transport.socket.connect-path", "connect-path"},
+ .type = GF_OPTION_TYPE_ANY
+ },
+ { .key = {"transport.socket.bind-path", "bind-path"},
+ .type = GF_OPTION_TYPE_ANY
+ },
+ { .key = {"transport.socket.listen-path", "listen-path"},
+ .type = GF_OPTION_TYPE_ANY
+ },
+ { .key = { "transport.address-family",
+ "address-family" },
+ .value = {"inet", "inet6", "inet/inet6", "inet6/inet",
+ "unix", "inet-sdp" },
+ .type = GF_OPTION_TYPE_STR
+ },
+
+ { .key = {"non-blocking-io"},
+ .type = GF_OPTION_TYPE_BOOL
+ },
+ { .key = {"transport.window-size"},
+ .type = GF_OPTION_TYPE_SIZET,
+ .min = GF_MIN_SOCKET_WINDOW_SIZE,
+ .max = GF_MAX_SOCKET_WINDOW_SIZE,
+ },
+ { .key = {"transport.socket.nodelay"},
+ .type = GF_OPTION_TYPE_BOOL
+ },
+ { .key = {"transport.socket.lowlat"},
+ .type = GF_OPTION_TYPE_BOOL
+ },
+ { .key = {NULL} }
+};
generated by cgit (git 2.34.1) at 2024-11-16 03:23:10 +0000