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c34b65c7 | 1 | /* |
e1bd3bee | 2 | * Copyright (c) 2008, 2009, 2010 Nicira Networks. |
c34b65c7 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | #include "stream.h" | |
19 | #include <errno.h> | |
20 | #include <inttypes.h> | |
21 | #include <sys/types.h> | |
22 | #include <netinet/in.h> | |
23 | #include <netinet/tcp.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
3762274e | 26 | #include <sys/socket.h> |
c34b65c7 BP |
27 | #include <unistd.h> |
28 | #include "packets.h" | |
29 | #include "socket-util.h" | |
30 | #include "util.h" | |
31 | #include "stream-provider.h" | |
32 | #include "stream-fd.h" | |
c34b65c7 | 33 | #include "vlog.h" |
5136ce49 | 34 | |
d98e6007 | 35 | VLOG_DEFINE_THIS_MODULE(stream_tcp); |
c34b65c7 BP |
36 | |
37 | /* Active TCP. */ | |
38 | ||
39 | static int | |
40 | new_tcp_stream(const char *name, int fd, int connect_status, | |
41 | const struct sockaddr_in *remote, struct stream **streamp) | |
42 | { | |
43 | struct sockaddr_in local; | |
44 | socklen_t local_len = sizeof local; | |
45 | int on = 1; | |
46 | int retval; | |
47 | ||
48 | /* Get the local IP and port information */ | |
49 | retval = getsockname(fd, (struct sockaddr *)&local, &local_len); | |
50 | if (retval) { | |
51 | memset(&local, 0, sizeof local); | |
52 | } | |
53 | ||
54 | retval = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof on); | |
55 | if (retval) { | |
56 | VLOG_ERR("%s: setsockopt(TCP_NODELAY): %s", name, strerror(errno)); | |
57 | close(fd); | |
58 | return errno; | |
59 | } | |
60 | ||
61 | retval = new_fd_stream(name, fd, connect_status, NULL, streamp); | |
62 | if (!retval) { | |
63 | struct stream *stream = *streamp; | |
64 | stream_set_remote_ip(stream, remote->sin_addr.s_addr); | |
65 | stream_set_remote_port(stream, remote->sin_port); | |
66 | stream_set_local_ip(stream, local.sin_addr.s_addr); | |
67 | stream_set_local_port(stream, local.sin_port); | |
68 | } | |
69 | return retval; | |
70 | } | |
71 | ||
72 | static int | |
73 | tcp_open(const char *name, char *suffix, struct stream **streamp) | |
74 | { | |
75 | struct sockaddr_in sin; | |
76 | int fd, error; | |
77 | ||
58fda1da | 78 | error = inet_open_active(SOCK_STREAM, suffix, 0, &sin, &fd); |
c34b65c7 BP |
79 | if (fd >= 0) { |
80 | return new_tcp_stream(name, fd, error, &sin, streamp); | |
81 | } else { | |
82 | VLOG_ERR("%s: connect: %s", name, strerror(error)); | |
83 | return error; | |
84 | } | |
85 | } | |
86 | ||
87 | struct stream_class tcp_stream_class = { | |
88 | "tcp", /* name */ | |
89 | tcp_open, /* open */ | |
90 | NULL, /* close */ | |
91 | NULL, /* connect */ | |
92 | NULL, /* recv */ | |
93 | NULL, /* send */ | |
539e96f6 BP |
94 | NULL, /* run */ |
95 | NULL, /* run_wait */ | |
c34b65c7 BP |
96 | NULL, /* wait */ |
97 | }; | |
98 | \f | |
99 | /* Passive TCP. */ | |
100 | ||
101 | static int ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len, | |
102 | struct stream **streamp); | |
103 | ||
104 | static int | |
c69ee87c | 105 | ptcp_open(const char *name OVS_UNUSED, char *suffix, struct pstream **pstreamp) |
c34b65c7 | 106 | { |
42967038 BP |
107 | struct sockaddr_in sin; |
108 | char bound_name[128]; | |
c34b65c7 BP |
109 | int fd; |
110 | ||
42967038 | 111 | fd = inet_open_passive(SOCK_STREAM, suffix, -1, &sin); |
c34b65c7 BP |
112 | if (fd < 0) { |
113 | return -fd; | |
c34b65c7 | 114 | } |
42967038 BP |
115 | |
116 | sprintf(bound_name, "ptcp:%"PRIu16":"IP_FMT, | |
117 | ntohs(sin.sin_port), IP_ARGS(&sin.sin_addr.s_addr)); | |
118 | return new_fd_pstream(bound_name, fd, ptcp_accept, NULL, pstreamp); | |
c34b65c7 BP |
119 | } |
120 | ||
121 | static int | |
122 | ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len, | |
123 | struct stream **streamp) | |
124 | { | |
125 | const struct sockaddr_in *sin = (const struct sockaddr_in *) sa; | |
126 | char name[128]; | |
127 | ||
128 | if (sa_len == sizeof(struct sockaddr_in) && sin->sin_family == AF_INET) { | |
129 | sprintf(name, "tcp:"IP_FMT, IP_ARGS(&sin->sin_addr)); | |
130 | sprintf(strchr(name, '\0'), ":%"PRIu16, ntohs(sin->sin_port)); | |
131 | } else { | |
132 | strcpy(name, "tcp"); | |
133 | } | |
134 | return new_tcp_stream(name, fd, 0, sin, streamp); | |
135 | } | |
136 | ||
137 | struct pstream_class ptcp_pstream_class = { | |
138 | "ptcp", | |
139 | ptcp_open, | |
140 | NULL, | |
141 | NULL, | |
142 | NULL | |
143 | }; | |
144 |