/usr/src/openvswitch-1.4.0/lib/stream-tcp.c is in openvswitch-datapath-dkms 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | /*
* Copyright (c) 2008, 2009, 2010 Nicira Networks.
*
* 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 <netinet/tcp.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include "packets.h"
#include "socket-util.h"
#include "util.h"
#include "stream-provider.h"
#include "stream-fd.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(stream_tcp);
/* Active TCP. */
static int
new_tcp_stream(const char *name, int fd, int connect_status,
const struct sockaddr_in *remote, struct stream **streamp)
{
struct sockaddr_in local;
socklen_t local_len = sizeof local;
int on = 1;
int retval;
/* Get the local IP and port information */
retval = getsockname(fd, (struct sockaddr *)&local, &local_len);
if (retval) {
memset(&local, 0, sizeof local);
}
retval = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof on);
if (retval) {
VLOG_ERR("%s: setsockopt(TCP_NODELAY): %s", name, strerror(errno));
close(fd);
return errno;
}
retval = new_fd_stream(name, fd, connect_status, NULL, streamp);
if (!retval) {
struct stream *stream = *streamp;
stream_set_remote_ip(stream, remote->sin_addr.s_addr);
stream_set_remote_port(stream, remote->sin_port);
stream_set_local_ip(stream, local.sin_addr.s_addr);
stream_set_local_port(stream, local.sin_port);
}
return retval;
}
static int
tcp_open(const char *name, char *suffix, struct stream **streamp)
{
struct sockaddr_in sin;
int fd, error;
error = inet_open_active(SOCK_STREAM, suffix, 0, &sin, &fd);
if (fd >= 0) {
return new_tcp_stream(name, fd, error, &sin, streamp);
} else {
VLOG_ERR("%s: connect: %s", name, strerror(error));
return error;
}
}
const struct stream_class tcp_stream_class = {
"tcp", /* name */
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 *sa, size_t sa_len,
struct stream **streamp);
static int
ptcp_open(const char *name OVS_UNUSED, char *suffix, struct pstream **pstreamp)
{
struct sockaddr_in sin;
char bound_name[128];
int fd;
fd = inet_open_passive(SOCK_STREAM, suffix, -1, &sin);
if (fd < 0) {
return -fd;
}
sprintf(bound_name, "ptcp:%"PRIu16":"IP_FMT,
ntohs(sin.sin_port), IP_ARGS(&sin.sin_addr.s_addr));
return new_fd_pstream(bound_name, fd, ptcp_accept, NULL, pstreamp);
}
static int
ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len,
struct stream **streamp)
{
const struct sockaddr_in *sin = (const struct sockaddr_in *) sa;
char name[128];
if (sa_len == sizeof(struct sockaddr_in) && sin->sin_family == AF_INET) {
sprintf(name, "tcp:"IP_FMT, IP_ARGS(&sin->sin_addr));
sprintf(strchr(name, '\0'), ":%"PRIu16, ntohs(sin->sin_port));
} else {
strcpy(name, "tcp");
}
return new_tcp_stream(name, fd, 0, sin, streamp);
}
const struct pstream_class ptcp_pstream_class = {
"ptcp",
ptcp_open,
NULL,
NULL,
NULL
};
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