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/*
* Copyright (c) 2008, 2009, 2010, 2012, 2013, 2014, 2015 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include "stream.h"
#include <errno.h>
#include <inttypes.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include "openvswitch/dynamic-string.h"
#include "packets.h"
#include "socket-util.h"
#include "util.h"
#include "stream-provider.h"
#include "stream-fd.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(stream_tcp);
/* Active TCP. */
/* Takes ownership of 'name'. */
static int
new_tcp_stream(char *name, int fd, int connect_status, struct stream **streamp)
{
if (connect_status == 0) {
setsockopt_tcp_nodelay(fd);
}
return new_fd_stream(name, fd, connect_status, AF_INET, streamp);
}
static int
tcp_open(const char *name, char *suffix, struct stream **streamp, uint8_t dscp)
{
int fd, error;
error = inet_open_active(SOCK_STREAM, suffix, -1, NULL, &fd, dscp);
if (fd >= 0) {
return new_tcp_stream(xstrdup(name), fd, error, streamp);
} else {
VLOG_ERR("%s: connect: %s", name, ovs_strerror(error));
return error;
}
}
const struct stream_class tcp_stream_class = {
"tcp", /* name */
true, /* needs_probes */
tcp_open, /* open */
NULL, /* close */
NULL, /* connect */
NULL, /* recv */
NULL, /* send */
NULL, /* run */
NULL, /* run_wait */
NULL, /* wait */
};
/* Passive TCP. */
static int ptcp_accept(int fd, const struct sockaddr_storage *,
size_t, struct stream **streamp);
static int
new_pstream(char *suffix, const char *name, struct pstream **pstreamp,
int dscp, char *unlink_path, bool kernel_print_port)
{
struct sockaddr_storage ss;
int error;
int fd;
fd = inet_open_passive(SOCK_STREAM, suffix, -1, &ss, dscp,
kernel_print_port);
if (fd < 0) {
return -fd;
}
struct ds bound_name = DS_EMPTY_INITIALIZER;
if (!name) {
ds_put_format(&bound_name, "ptcp:%"PRIu16":", ss_get_port(&ss));
ss_format_address(&ss, &bound_name);
} else {
ds_put_cstr(&bound_name, name);
}
error = new_fd_pstream(ds_steal_cstr(&bound_name), fd,
ptcp_accept, unlink_path, pstreamp);
if (!error) {
pstream_set_bound_port(*pstreamp, htons(ss_get_port(&ss)));
}
return error;
}
static int
ptcp_open(const char *name OVS_UNUSED, char *suffix, struct pstream **pstreamp,
uint8_t dscp)
{
return new_pstream(suffix, NULL, pstreamp, dscp, NULL, true);
}
static int
ptcp_accept(int fd, const struct sockaddr_storage *ss,
size_t ss_len OVS_UNUSED, struct stream **streamp)
{
struct ds name = DS_EMPTY_INITIALIZER;
ds_put_cstr(&name, "tcp:");
ss_format_address(ss, &name);
ds_put_format(&name, ":%"PRIu16, ss_get_port(ss));
return new_tcp_stream(ds_steal_cstr(&name), fd, 0, streamp);
}
const struct pstream_class ptcp_pstream_class = {
"ptcp",
true,
ptcp_open,
NULL,
NULL,
NULL,
};
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