mirror of
https://github.com/openvswitch/ovs
synced 2025-08-22 09:58:01 +00:00
1bb011218d
Until now, the default_port parameters to these functions have had different types and different behavior. There is a reason for this, since it makes sense to listen on a kernel-selected port but it does not make sense to connect to a kernel-selected port, but this overlooks the possibility that a caller might want to parse a string in the format understood by inet_parse_active() without actually using it to connect to a remote host. This commit makes the behavior consistent and updates all the callers to work with the new semantics. Signed-off-by: Ben Pfaff <blp@ovn.org> Acked-by: Mark Michelson <mmichels@redhat.com>
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010, 2012, 2013, 2014, 2015 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "stream.h"
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#include <errno.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include "openvswitch/dynamic-string.h"
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#include "packets.h"
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#include "socket-util.h"
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#include "util.h"
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#include "stream-provider.h"
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#include "stream-fd.h"
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#include "openvswitch/vlog.h"
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VLOG_DEFINE_THIS_MODULE(stream_tcp);
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/* Active TCP. */
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/* Takes ownership of 'name'. */
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static int
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new_tcp_stream(char *name, int fd, int connect_status, struct stream **streamp)
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{
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if (connect_status == 0) {
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setsockopt_tcp_nodelay(fd);
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}
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return new_fd_stream(name, fd, connect_status, AF_INET, streamp);
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}
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static int
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tcp_open(const char *name, char *suffix, struct stream **streamp, uint8_t dscp)
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{
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int fd, error;
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error = inet_open_active(SOCK_STREAM, suffix, -1, NULL, &fd, dscp);
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if (fd >= 0) {
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return new_tcp_stream(xstrdup(name), fd, error, streamp);
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} else {
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VLOG_ERR("%s: connect: %s", name, ovs_strerror(error));
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return error;
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}
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}
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const struct stream_class tcp_stream_class = {
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"tcp", /* name */
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true, /* needs_probes */
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tcp_open, /* open */
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NULL, /* close */
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NULL, /* connect */
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NULL, /* recv */
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NULL, /* send */
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NULL, /* run */
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NULL, /* run_wait */
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NULL, /* wait */
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};
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/* Passive TCP. */
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static int ptcp_accept(int fd, const struct sockaddr_storage *,
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size_t, struct stream **streamp);
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static int
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new_pstream(char *suffix, const char *name, struct pstream **pstreamp,
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int dscp, char *unlink_path, bool kernel_print_port)
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{
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struct sockaddr_storage ss;
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int error;
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int fd;
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fd = inet_open_passive(SOCK_STREAM, suffix, -1, &ss, dscp,
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kernel_print_port);
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if (fd < 0) {
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return -fd;
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}
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struct ds bound_name = DS_EMPTY_INITIALIZER;
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if (!name) {
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ds_put_format(&bound_name, "ptcp:%"PRIu16":", ss_get_port(&ss));
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ss_format_address(&ss, &bound_name);
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} else {
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ds_put_cstr(&bound_name, name);
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}
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error = new_fd_pstream(ds_steal_cstr(&bound_name), fd,
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ptcp_accept, unlink_path, pstreamp);
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if (!error) {
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pstream_set_bound_port(*pstreamp, htons(ss_get_port(&ss)));
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}
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return error;
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}
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static int
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ptcp_open(const char *name OVS_UNUSED, char *suffix, struct pstream **pstreamp,
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uint8_t dscp)
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{
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return new_pstream(suffix, NULL, pstreamp, dscp, NULL, true);
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}
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static int
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ptcp_accept(int fd, const struct sockaddr_storage *ss,
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size_t ss_len OVS_UNUSED, struct stream **streamp)
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{
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struct ds name = DS_EMPTY_INITIALIZER;
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ds_put_cstr(&name, "tcp:");
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ss_format_address(ss, &name);
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ds_put_format(&name, ":%"PRIu16, ss_get_port(ss));
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return new_tcp_stream(ds_steal_cstr(&name), fd, 0, streamp);
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}
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const struct pstream_class ptcp_pstream_class = {
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"ptcp",
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true,
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ptcp_open,
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NULL,
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NULL,
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NULL,
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};
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