Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 1 | /* A Media Gateway Control Protocol Media Gateway: RFC 3435 */ |
| 2 | /* The protocol implementation */ |
| 3 | |
| 4 | /* |
Holger Hans Peter Freyther | ab56ce1 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 5 | * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 6 | * (C) 2009-2011 by On-Waves |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 18 | * |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <string.h> |
Holger Hans Peter Freyther | adb1992 | 2010-05-14 02:14:09 +0800 | [diff] [blame] | 25 | #include <stdlib.h> |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 26 | #include <unistd.h> |
Holger Hans Peter Freyther | 9d7bd81 | 2010-04-07 12:55:40 +0200 | [diff] [blame] | 27 | #include <errno.h> |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 28 | |
| 29 | #include <sys/socket.h> |
| 30 | #include <arpa/inet.h> |
| 31 | |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/core/msgb.h> |
| 33 | #include <osmocom/core/select.h> |
Holger Hans Peter Freyther | f41fb1f | 2010-02-26 20:16:37 +0100 | [diff] [blame] | 34 | |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 35 | #include <openbsc/mgcp.h> |
| 36 | #include <openbsc/mgcp_internal.h> |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 37 | |
| 38 | #warning "Make use of the rtp proxy code" |
| 39 | |
Holger Hans Peter Freyther | 19f4aa5 | 2010-10-12 15:39:46 +0200 | [diff] [blame] | 40 | /* attempt to determine byte order */ |
Holger Hans Peter Freyther | 19f4aa5 | 2010-10-12 15:39:46 +0200 | [diff] [blame] | 41 | #include <sys/param.h> |
| 42 | #include <limits.h> |
| 43 | |
| 44 | #ifndef __BYTE_ORDER |
| 45 | #error "__BYTE_ORDER should be defined by someone" |
| 46 | #endif |
| 47 | |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 48 | /* according to rtp_proxy.c RFC 3550 */ |
| 49 | struct rtp_hdr { |
| 50 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
Holger Hans Peter Freyther | 1979f79 | 2010-07-23 18:56:26 +0800 | [diff] [blame] | 51 | uint8_t csrc_count:4, |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 52 | extension:1, |
| 53 | padding:1, |
| 54 | version:2; |
Holger Hans Peter Freyther | 1979f79 | 2010-07-23 18:56:26 +0800 | [diff] [blame] | 55 | uint8_t payload_type:7, |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 56 | marker:1; |
| 57 | #elif __BYTE_ORDER == __BIG_ENDIAN |
Holger Hans Peter Freyther | 1979f79 | 2010-07-23 18:56:26 +0800 | [diff] [blame] | 58 | uint8_t version:2, |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 59 | padding:1, |
| 60 | extension:1, |
| 61 | csrc_count:4; |
Holger Hans Peter Freyther | 1979f79 | 2010-07-23 18:56:26 +0800 | [diff] [blame] | 62 | uint8_t marker:1, |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 63 | payload_type:7; |
| 64 | #endif |
Holger Hans Peter Freyther | 1884623 | 2010-07-23 18:56:01 +0800 | [diff] [blame] | 65 | uint16_t sequence; |
Holger Hans Peter Freyther | 142475b | 2010-07-23 18:55:38 +0800 | [diff] [blame] | 66 | uint32_t timestamp; |
| 67 | uint32_t ssrc; |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 68 | } __attribute__((packed)); |
| 69 | |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 70 | |
| 71 | enum { |
| 72 | DEST_NETWORK = 0, |
| 73 | DEST_BTS = 1, |
| 74 | }; |
| 75 | |
| 76 | enum { |
| 77 | PROTO_RTP, |
| 78 | PROTO_RTCP, |
| 79 | }; |
| 80 | |
Holger Hans Peter Freyther | b689426 | 2010-04-21 21:25:13 +0800 | [diff] [blame] | 81 | #define DUMMY_LOAD 0x23 |
| 82 | |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 83 | |
| 84 | static int udp_send(int fd, struct in_addr *addr, int port, char *buf, int len) |
| 85 | { |
| 86 | struct sockaddr_in out; |
| 87 | out.sin_family = AF_INET; |
| 88 | out.sin_port = port; |
| 89 | memcpy(&out.sin_addr, addr, sizeof(*addr)); |
| 90 | |
| 91 | return sendto(fd, buf, len, 0, (struct sockaddr *)&out, sizeof(out)); |
| 92 | } |
| 93 | |
Holger Hans Peter Freyther | b689426 | 2010-04-21 21:25:13 +0800 | [diff] [blame] | 94 | int mgcp_send_dummy(struct mgcp_endpoint *endp) |
| 95 | { |
| 96 | static char buf[] = { DUMMY_LOAD }; |
| 97 | |
Holger Hans Peter Freyther | bfb68b7 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 98 | return udp_send(endp->net_end.rtp.fd, &endp->net_end.addr, |
Holger Hans Peter Freyther | fab76aa | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 99 | endp->net_end.rtp_port, buf, 1); |
Holger Hans Peter Freyther | b689426 | 2010-04-21 21:25:13 +0800 | [diff] [blame] | 100 | } |
| 101 | |
Holger Hans Peter Freyther | b1e9ba9 | 2010-08-04 22:20:34 +0800 | [diff] [blame] | 102 | static void patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state, |
| 103 | int payload, struct sockaddr_in *addr, char *data, int len) |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 104 | { |
Holger Hans Peter Freyther | e758d95 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 105 | uint16_t seq; |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 106 | uint32_t timestamp; |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 107 | struct rtp_hdr *rtp_hdr; |
| 108 | |
| 109 | if (len < sizeof(*rtp_hdr)) |
| 110 | return; |
| 111 | |
Holger Hans Peter Freyther | e758d95 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 112 | rtp_hdr = (struct rtp_hdr *) data; |
| 113 | seq = ntohs(rtp_hdr->sequence); |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 114 | timestamp = ntohl(rtp_hdr->timestamp); |
Holger Hans Peter Freyther | e758d95 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 115 | |
Holger Hans Peter Freyther | 84ba528 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 116 | if (!state->initialized) { |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 117 | state->seq_no = seq - 1; |
| 118 | state->ssrc = state->orig_ssrc = rtp_hdr->ssrc; |
Holger Hans Peter Freyther | 84ba528 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 119 | state->initialized = 1; |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 120 | state->last_timestamp = timestamp; |
| 121 | } else if (state->ssrc != rtp_hdr->ssrc) { |
| 122 | state->ssrc = rtp_hdr->ssrc; |
| 123 | state->seq_offset = (state->seq_no + 1) - seq; |
| 124 | state->timestamp_offset = state->last_timestamp - timestamp; |
Holger Hans Peter Freyther | 73aa514 | 2010-08-05 12:07:00 +0000 | [diff] [blame] | 125 | state->patch = endp->allow_patch; |
Holger Hans Peter Freyther | eb0446b | 2010-08-04 21:45:39 +0800 | [diff] [blame] | 126 | LOGP(DMGCP, LOGL_NOTICE, |
Holger Hans Peter Freyther | 8e2acb7 | 2010-08-04 22:14:46 +0800 | [diff] [blame] | 127 | "The SSRC changed on 0x%x SSRC: %u offset: %d from %s:%d in %d\n", |
Holger Hans Peter Freyther | b1e9ba9 | 2010-08-04 22:20:34 +0800 | [diff] [blame] | 128 | ENDPOINT_NUMBER(endp), state->ssrc, state->seq_offset, |
| 129 | inet_ntoa(addr->sin_addr), ntohs(addr->sin_port), endp->conn_mode); |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 130 | } |
Holger Hans Peter Freyther | e758d95 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 131 | |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 132 | /* apply the offset and store it back to the packet */ |
Holger Hans Peter Freyther | 6230eb2 | 2010-08-03 15:36:57 +0000 | [diff] [blame] | 133 | if (state->patch) { |
| 134 | seq += state->seq_offset; |
| 135 | rtp_hdr->sequence = htons(seq); |
| 136 | rtp_hdr->ssrc = state->orig_ssrc; |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 137 | |
Holger Hans Peter Freyther | 6230eb2 | 2010-08-03 15:36:57 +0000 | [diff] [blame] | 138 | timestamp += state->timestamp_offset; |
| 139 | rtp_hdr->timestamp = htonl(timestamp); |
| 140 | } |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 141 | |
| 142 | /* seq changed, now compare if we have lost something */ |
| 143 | if (state->seq_no + 1u != seq) |
| 144 | state->lost_no = abs(seq - (state->seq_no + 1)); |
Holger Hans Peter Freyther | 84ba528 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 145 | state->seq_no = seq; |
Holger Hans Peter Freyther | e758d95 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 146 | |
Holger Hans Peter Freyther | 3040ed4 | 2010-08-03 14:35:50 +0000 | [diff] [blame] | 147 | state->last_timestamp = timestamp; |
| 148 | |
Holger Hans Peter Freyther | 0052955 | 2010-04-06 11:15:50 +0200 | [diff] [blame] | 149 | if (payload < 0) |
| 150 | return; |
| 151 | |
Holger Hans Peter Freyther | f95e3ad | 2010-02-26 13:42:58 +0100 | [diff] [blame] | 152 | rtp_hdr->payload_type = payload; |
| 153 | } |
| 154 | |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 155 | /* |
Holger Hans Peter Freyther | cd144d5 | 2010-08-05 06:19:24 +0800 | [diff] [blame] | 156 | * The below code is for dispatching. We have a dedicated port for |
| 157 | * the data coming from the net and one to discover the BTS. |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 158 | */ |
Holger Hans Peter Freyther | 8fdb95e | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 159 | static int forward_data(int fd, struct mgcp_rtp_tap *tap, const char *buf, int len) |
| 160 | { |
| 161 | if (!tap->enabled) |
| 162 | return 0; |
| 163 | |
| 164 | return sendto(fd, buf, len, 0, |
| 165 | (struct sockaddr *)&tap->forward, sizeof(tap->forward)); |
| 166 | } |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 167 | |
Holger Hans Peter Freyther | c9e3bc6 | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 168 | static int send_transcoder(struct mgcp_rtp_end *end, struct mgcp_config *cfg, |
| 169 | int is_rtp, const char *buf, int len) |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 170 | { |
| 171 | int rc; |
| 172 | int port; |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 173 | struct sockaddr_in addr; |
| 174 | |
Holger Hans Peter Freyther | c9e3bc6 | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 175 | port = is_rtp ? end->rtp_port : end->rtcp_port; |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 176 | |
| 177 | addr.sin_family = AF_INET; |
| 178 | addr.sin_addr = cfg->transcoder_in; |
Holger Hans Peter Freyther | b1880ee | 2010-11-01 21:53:39 +0100 | [diff] [blame] | 179 | addr.sin_port = port; |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 180 | |
| 181 | rc = sendto(is_rtp ? |
Holger Hans Peter Freyther | c9e3bc6 | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 182 | end->rtp.fd : |
| 183 | end->rtcp.fd, buf, len, 0, |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 184 | (struct sockaddr *) &addr, sizeof(addr)); |
| 185 | |
| 186 | if (rc != len) |
| 187 | LOGP(DMGCP, LOGL_ERROR, |
| 188 | "Failed to send data to the transcoder: %s\n", |
| 189 | strerror(errno)); |
| 190 | |
| 191 | return rc; |
| 192 | } |
| 193 | |
Holger Hans Peter Freyther | cd144d5 | 2010-08-05 06:19:24 +0800 | [diff] [blame] | 194 | static int send_to(struct mgcp_endpoint *endp, int dest, int is_rtp, |
| 195 | struct sockaddr_in *addr, char *buf, int rc) |
| 196 | { |
Holger Hans Peter Freyther | ab56ce1 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 197 | struct mgcp_trunk_config *tcfg = endp->tcfg; |
Holger Hans Peter Freyther | 84026ba | 2010-08-05 06:31:58 +0800 | [diff] [blame] | 198 | /* For loop toggle the destination and then dispatch. */ |
Holger Hans Peter Freyther | ab56ce1 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 199 | if (tcfg->audio_loop) |
Holger Hans Peter Freyther | 84026ba | 2010-08-05 06:31:58 +0800 | [diff] [blame] | 200 | dest = !dest; |
| 201 | |
| 202 | /* Loop based on the conn_mode, maybe undoing the above */ |
| 203 | if (endp->conn_mode == MGCP_CONN_LOOPBACK) |
| 204 | dest = !dest; |
| 205 | |
Holger Hans Peter Freyther | cd144d5 | 2010-08-05 06:19:24 +0800 | [diff] [blame] | 206 | if (dest == DEST_NETWORK) { |
| 207 | if (is_rtp) { |
| 208 | patch_and_count(endp, &endp->bts_state, |
| 209 | endp->net_end.payload_type, |
| 210 | addr, buf, rc); |
Holger Hans Peter Freyther | 8fdb95e | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 211 | forward_data(endp->net_end.rtp.fd, |
| 212 | &endp->taps[MGCP_TAP_NET_OUT], buf, rc); |
Holger Hans Peter Freyther | cd144d5 | 2010-08-05 06:19:24 +0800 | [diff] [blame] | 213 | return udp_send(endp->net_end.rtp.fd, &endp->net_end.addr, |
| 214 | endp->net_end.rtp_port, buf, rc); |
| 215 | } else { |
| 216 | return udp_send(endp->net_end.rtcp.fd, &endp->net_end.addr, |
| 217 | endp->net_end.rtcp_port, buf, rc); |
| 218 | } |
| 219 | } else { |
| 220 | if (is_rtp) { |
| 221 | patch_and_count(endp, &endp->net_state, |
| 222 | endp->bts_end.payload_type, |
| 223 | addr, buf, rc); |
Holger Hans Peter Freyther | 8fdb95e | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 224 | forward_data(endp->bts_end.rtp.fd, |
| 225 | &endp->taps[MGCP_TAP_BTS_OUT], buf, rc); |
Holger Hans Peter Freyther | cd144d5 | 2010-08-05 06:19:24 +0800 | [diff] [blame] | 226 | return udp_send(endp->bts_end.rtp.fd, &endp->bts_end.addr, |
| 227 | endp->bts_end.rtp_port, buf, rc); |
| 228 | } else { |
| 229 | return udp_send(endp->bts_end.rtcp.fd, &endp->bts_end.addr, |
| 230 | endp->bts_end.rtcp_port, buf, rc); |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | |
Holger Hans Peter Freyther | 5444481 | 2011-06-02 19:04:22 +0200 | [diff] [blame] | 235 | static int receive_from(struct mgcp_endpoint *endp, int fd, struct sockaddr_in *addr, |
| 236 | char *buf, int bufsize) |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 237 | { |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 238 | int rc; |
| 239 | socklen_t slen = sizeof(*addr); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 240 | |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 241 | rc = recvfrom(fd, buf, bufsize, 0, |
| 242 | (struct sockaddr *) addr, &slen); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 243 | if (rc < 0) { |
Holger Hans Peter Freyther | 9d7bd81 | 2010-04-07 12:55:40 +0200 | [diff] [blame] | 244 | LOGP(DMGCP, LOGL_ERROR, "Failed to receive message on: 0x%x errno: %d/%s\n", |
| 245 | ENDPOINT_NUMBER(endp), errno, strerror(errno)); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 246 | return -1; |
| 247 | } |
| 248 | |
| 249 | /* do not forward aynthing... maybe there is a packet from the bts */ |
Holger Hans Peter Freyther | e15223b | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 250 | if (!endp->allocated) |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 251 | return -1; |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 252 | |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 253 | #warning "Slight spec violation. With connection mode recvonly we should attempt to forward." |
| 254 | |
| 255 | return rc; |
| 256 | } |
| 257 | |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 258 | static int rtp_data_net(struct osmo_fd *fd, unsigned int what) |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 259 | { |
| 260 | char buf[4096]; |
| 261 | struct sockaddr_in addr; |
| 262 | struct mgcp_endpoint *endp; |
| 263 | int rc, proto; |
| 264 | |
| 265 | endp = (struct mgcp_endpoint *) fd->data; |
| 266 | |
Holger Hans Peter Freyther | 5444481 | 2011-06-02 19:04:22 +0200 | [diff] [blame] | 267 | rc = receive_from(endp, fd->fd, &addr, buf, sizeof(buf)); |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 268 | if (rc <= 0) |
| 269 | return -1; |
| 270 | |
| 271 | if (memcmp(&addr.sin_addr, &endp->net_end.addr, sizeof(addr.sin_addr)) != 0) { |
| 272 | LOGP(DMGCP, LOGL_ERROR, |
| 273 | "Data from wrong address %s on 0x%x\n", |
| 274 | inet_ntoa(addr.sin_addr), ENDPOINT_NUMBER(endp)); |
| 275 | return -1; |
| 276 | } |
| 277 | |
| 278 | if (endp->net_end.rtp_port != addr.sin_port && |
| 279 | endp->net_end.rtcp_port != addr.sin_port) { |
| 280 | LOGP(DMGCP, LOGL_ERROR, |
| 281 | "Data from wrong source port %d on 0x%x\n", |
| 282 | ntohs(addr.sin_port), ENDPOINT_NUMBER(endp)); |
| 283 | return -1; |
| 284 | } |
| 285 | |
| 286 | /* throw away the dummy message */ |
| 287 | if (rc == 1 && buf[0] == DUMMY_LOAD) { |
| 288 | LOGP(DMGCP, LOGL_NOTICE, "Filtered dummy from network on 0x%x\n", |
| 289 | ENDPOINT_NUMBER(endp)); |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | proto = fd == &endp->net_end.rtp ? PROTO_RTP : PROTO_RTCP; |
| 294 | endp->net_end.packets += 1; |
Holger Hans Peter Freyther | 8fdb95e | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 295 | |
| 296 | forward_data(fd->fd, &endp->taps[MGCP_TAP_NET_IN], buf, rc); |
Holger Hans Peter Freyther | c9e3bc6 | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 297 | if (endp->is_transcoded) |
| 298 | return send_transcoder(&endp->trans_net, endp->cfg, proto == PROTO_RTP, &buf[0], rc); |
| 299 | else |
| 300 | return send_to(endp, DEST_BTS, proto == PROTO_RTP, &addr, &buf[0], rc); |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 301 | } |
| 302 | |
Holger Hans Peter Freyther | 6769ea0 | 2010-08-06 07:48:41 +0800 | [diff] [blame] | 303 | static void discover_bts(struct mgcp_endpoint *endp, int proto, struct sockaddr_in *addr) |
| 304 | { |
| 305 | struct mgcp_config *cfg = endp->cfg; |
| 306 | |
| 307 | if (proto == PROTO_RTP && endp->bts_end.rtp_port == 0) { |
| 308 | if (!cfg->bts_ip || |
| 309 | memcmp(&addr->sin_addr, |
| 310 | &cfg->bts_in, sizeof(cfg->bts_in)) == 0 || |
| 311 | memcmp(&addr->sin_addr, |
| 312 | &endp->bts_end.addr, sizeof(endp->bts_end.addr)) == 0) { |
| 313 | |
| 314 | endp->bts_end.rtp_port = addr->sin_port; |
| 315 | endp->bts_end.addr = addr->sin_addr; |
| 316 | |
| 317 | LOGP(DMGCP, LOGL_NOTICE, |
| 318 | "Found BTS for endpoint: 0x%x on port: %d/%d of %s\n", |
| 319 | ENDPOINT_NUMBER(endp), ntohs(endp->bts_end.rtp_port), |
| 320 | ntohs(endp->bts_end.rtcp_port), inet_ntoa(addr->sin_addr)); |
| 321 | } |
| 322 | } else if (proto == PROTO_RTCP && endp->bts_end.rtcp_port == 0) { |
| 323 | if (memcmp(&endp->bts_end.addr, &addr->sin_addr, |
| 324 | sizeof(endp->bts_end.addr)) == 0) { |
| 325 | endp->bts_end.rtcp_port = addr->sin_port; |
| 326 | } |
| 327 | } |
| 328 | } |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 329 | |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 330 | static int rtp_data_bts(struct osmo_fd *fd, unsigned int what) |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 331 | { |
| 332 | char buf[4096]; |
| 333 | struct sockaddr_in addr; |
| 334 | struct mgcp_endpoint *endp; |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 335 | int rc, proto; |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 336 | |
| 337 | endp = (struct mgcp_endpoint *) fd->data; |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 338 | |
Holger Hans Peter Freyther | 5444481 | 2011-06-02 19:04:22 +0200 | [diff] [blame] | 339 | rc = receive_from(endp, fd->fd, &addr, buf, sizeof(buf)); |
Holger Hans Peter Freyther | 10b2e7a | 2010-08-05 06:27:22 +0800 | [diff] [blame] | 340 | if (rc <= 0) |
| 341 | return -1; |
| 342 | |
Holger Hans Peter Freyther | 29e0188 | 2010-08-06 07:39:26 +0800 | [diff] [blame] | 343 | proto = fd == &endp->bts_end.rtp ? PROTO_RTP : PROTO_RTCP; |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 344 | |
| 345 | /* We have no idea who called us, maybe it is the BTS. */ |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 346 | /* it was the BTS... */ |
Holger Hans Peter Freyther | 6769ea0 | 2010-08-06 07:48:41 +0800 | [diff] [blame] | 347 | discover_bts(endp, proto, &addr); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 348 | |
Holger Hans Peter Freyther | 935137c | 2010-08-05 10:53:26 +0000 | [diff] [blame] | 349 | if (memcmp(&endp->bts_end.addr, &addr.sin_addr, sizeof(addr.sin_addr)) != 0) { |
| 350 | LOGP(DMGCP, LOGL_ERROR, |
| 351 | "Data from wrong bts %s on 0x%x\n", |
| 352 | inet_ntoa(addr.sin_addr), ENDPOINT_NUMBER(endp)); |
| 353 | return -1; |
| 354 | } |
| 355 | |
| 356 | if (endp->bts_end.rtp_port != addr.sin_port && |
| 357 | endp->bts_end.rtcp_port != addr.sin_port) { |
| 358 | LOGP(DMGCP, LOGL_ERROR, |
| 359 | "Data from wrong bts source port %d on 0x%x\n", |
| 360 | ntohs(addr.sin_port), ENDPOINT_NUMBER(endp)); |
| 361 | return -1; |
| 362 | } |
| 363 | |
Holger Hans Peter Freyther | 906ed10 | 2010-05-14 02:18:59 +0800 | [diff] [blame] | 364 | /* throw away the dummy message */ |
Holger Hans Peter Freyther | 040c130 | 2010-04-22 12:14:51 +0800 | [diff] [blame] | 365 | if (rc == 1 && buf[0] == DUMMY_LOAD) { |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 366 | LOGP(DMGCP, LOGL_NOTICE, "Filtered dummy from bts on 0x%x\n", |
Holger Hans Peter Freyther | 040c130 | 2010-04-22 12:14:51 +0800 | [diff] [blame] | 367 | ENDPOINT_NUMBER(endp)); |
| 368 | return 0; |
| 369 | } |
| 370 | |
Holger Hans Peter Freyther | 6de5b11 | 2010-04-07 09:37:17 +0200 | [diff] [blame] | 371 | /* do this before the loop handling */ |
Holger Hans Peter Freyther | 77eae16 | 2010-08-05 06:55:58 +0800 | [diff] [blame] | 372 | endp->bts_end.packets += 1; |
Holger Hans Peter Freyther | 6de5b11 | 2010-04-07 09:37:17 +0200 | [diff] [blame] | 373 | |
Holger Hans Peter Freyther | 8fdb95e | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 374 | forward_data(fd->fd, &endp->taps[MGCP_TAP_BTS_IN], buf, rc); |
Holger Hans Peter Freyther | 1d9a8eb | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 375 | if (endp->is_transcoded) |
Holger Hans Peter Freyther | c9e3bc6 | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 376 | return send_transcoder(&endp->trans_bts, endp->cfg, proto == PROTO_RTP, &buf[0], rc); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 377 | else |
| 378 | return send_to(endp, DEST_NETWORK, proto == PROTO_RTP, &addr, &buf[0], rc); |
| 379 | } |
| 380 | |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 381 | static int rtp_data_transcoder(struct mgcp_rtp_end *end, struct mgcp_endpoint *_endp, |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 382 | int dest, struct osmo_fd *fd) |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 383 | { |
| 384 | char buf[4096]; |
| 385 | struct sockaddr_in addr; |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 386 | struct mgcp_config *cfg; |
| 387 | int rc, proto; |
| 388 | |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 389 | cfg = _endp->cfg; |
Holger Hans Peter Freyther | 5444481 | 2011-06-02 19:04:22 +0200 | [diff] [blame] | 390 | rc = receive_from(_endp, fd->fd, &addr, buf, sizeof(buf)); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 391 | if (rc <= 0) |
| 392 | return -1; |
| 393 | |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 394 | proto = fd == &end->rtp ? PROTO_RTP : PROTO_RTCP; |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 395 | |
| 396 | if (memcmp(&addr.sin_addr, &cfg->transcoder_in, sizeof(addr.sin_addr)) != 0) { |
| 397 | LOGP(DMGCP, LOGL_ERROR, |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 398 | "Data not coming from transcoder dest: %d %s on 0x%x\n", |
| 399 | dest, inet_ntoa(addr.sin_addr), ENDPOINT_NUMBER(_endp)); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 400 | return -1; |
| 401 | } |
| 402 | |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 403 | if (end->rtp_port != addr.sin_port && |
| 404 | end->rtcp_port != addr.sin_port) { |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 405 | LOGP(DMGCP, LOGL_ERROR, |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 406 | "Data from wrong transcoder dest %d source port %d on 0x%x\n", |
| 407 | dest, ntohs(addr.sin_port), ENDPOINT_NUMBER(_endp)); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 408 | return -1; |
| 409 | } |
| 410 | |
| 411 | /* throw away the dummy message */ |
| 412 | if (rc == 1 && buf[0] == DUMMY_LOAD) { |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 413 | LOGP(DMGCP, LOGL_NOTICE, "Filtered dummy from transcoder dest %d on 0x%x\n", |
| 414 | dest, ENDPOINT_NUMBER(_endp)); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 415 | return 0; |
| 416 | } |
| 417 | |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 418 | end->packets += 1; |
| 419 | return send_to(_endp, dest, proto == PROTO_RTP, &addr, &buf[0], rc); |
| 420 | } |
| 421 | |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 422 | static int rtp_data_trans_net(struct osmo_fd *fd, unsigned int what) |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 423 | { |
| 424 | struct mgcp_endpoint *endp; |
| 425 | endp = (struct mgcp_endpoint *) fd->data; |
| 426 | |
| 427 | return rtp_data_transcoder(&endp->trans_net, endp, DEST_NETWORK, fd); |
| 428 | } |
| 429 | |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 430 | static int rtp_data_trans_bts(struct osmo_fd *fd, unsigned int what) |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 431 | { |
| 432 | struct mgcp_endpoint *endp; |
| 433 | endp = (struct mgcp_endpoint *) fd->data; |
| 434 | |
| 435 | return rtp_data_transcoder(&endp->trans_bts, endp, DEST_BTS, fd); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 436 | } |
| 437 | |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 438 | static int create_bind(const char *source_addr, struct osmo_fd *fd, int port) |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 439 | { |
| 440 | struct sockaddr_in addr; |
| 441 | int on = 1; |
| 442 | |
| 443 | fd->fd = socket(AF_INET, SOCK_DGRAM, 0); |
| 444 | if (fd->fd < 0) { |
| 445 | LOGP(DMGCP, LOGL_ERROR, "Failed to create UDP port.\n"); |
| 446 | return -1; |
| 447 | } |
| 448 | |
| 449 | setsockopt(fd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); |
| 450 | memset(&addr, 0, sizeof(addr)); |
| 451 | addr.sin_family = AF_INET; |
| 452 | addr.sin_port = htons(port); |
| 453 | inet_aton(source_addr, &addr.sin_addr); |
| 454 | |
| 455 | if (bind(fd->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
Holger Hans Peter Freyther | 1de4d84 | 2010-08-06 03:00:17 +0800 | [diff] [blame] | 456 | close(fd->fd); |
| 457 | fd->fd = -1; |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 458 | return -1; |
| 459 | } |
| 460 | |
| 461 | return 0; |
| 462 | } |
| 463 | |
Holger Hans Peter Freyther | 489d0a6 | 2010-05-31 10:22:00 +0800 | [diff] [blame] | 464 | static int set_ip_tos(int fd, int tos) |
| 465 | { |
| 466 | int ret; |
| 467 | ret = setsockopt(fd, IPPROTO_IP, IP_TOS, |
| 468 | &tos, sizeof(tos)); |
| 469 | return ret != 0; |
| 470 | } |
| 471 | |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 472 | static int bind_rtp(struct mgcp_config *cfg, struct mgcp_rtp_end *rtp_end, int endpno) |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 473 | { |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 474 | if (create_bind(cfg->source_addr, &rtp_end->rtp, rtp_end->local_port) != 0) { |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 475 | LOGP(DMGCP, LOGL_ERROR, "Failed to create RTP port: %s:%d on 0x%x\n", |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 476 | cfg->source_addr, rtp_end->local_port, endpno); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 477 | goto cleanup0; |
| 478 | } |
| 479 | |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 480 | if (create_bind(cfg->source_addr, &rtp_end->rtcp, rtp_end->local_port + 1) != 0) { |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 481 | LOGP(DMGCP, LOGL_ERROR, "Failed to create RTCP port: %s:%d on 0x%x\n", |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 482 | cfg->source_addr, rtp_end->local_port + 1, endpno); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 483 | goto cleanup1; |
| 484 | } |
| 485 | |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 486 | set_ip_tos(rtp_end->rtp.fd, cfg->endp_dscp); |
| 487 | set_ip_tos(rtp_end->rtcp.fd, cfg->endp_dscp); |
Holger Hans Peter Freyther | 489d0a6 | 2010-05-31 10:22:00 +0800 | [diff] [blame] | 488 | |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 489 | rtp_end->rtp.when = BSC_FD_READ; |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 490 | if (osmo_fd_register(&rtp_end->rtp) != 0) { |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 491 | LOGP(DMGCP, LOGL_ERROR, "Failed to register RTP port %d on 0x%x\n", |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 492 | rtp_end->local_port, endpno); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 493 | goto cleanup2; |
| 494 | } |
| 495 | |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 496 | rtp_end->rtcp.when = BSC_FD_READ; |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 497 | if (osmo_fd_register(&rtp_end->rtcp) != 0) { |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 498 | LOGP(DMGCP, LOGL_ERROR, "Failed to register RTCP port %d on 0x%x\n", |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 499 | rtp_end->local_port + 1, endpno); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 500 | goto cleanup3; |
| 501 | } |
| 502 | |
| 503 | return 0; |
| 504 | |
| 505 | cleanup3: |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 506 | osmo_fd_unregister(&rtp_end->rtp); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 507 | cleanup2: |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 508 | close(rtp_end->rtcp.fd); |
| 509 | rtp_end->rtcp.fd = -1; |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 510 | cleanup1: |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 511 | close(rtp_end->rtp.fd); |
| 512 | rtp_end->rtp.fd = -1; |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 513 | cleanup0: |
| 514 | return -1; |
| 515 | } |
| 516 | |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 517 | static int int_bind(const char *port, |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 518 | struct mgcp_rtp_end *end, int (*cb)(struct osmo_fd *, unsigned), |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 519 | struct mgcp_endpoint *_endp, int rtp_port) |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 520 | { |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 521 | if (end->rtp.fd != -1 || end->rtcp.fd != -1) { |
| 522 | LOGP(DMGCP, LOGL_ERROR, "Previous %s was still bound on %d\n", |
| 523 | port, ENDPOINT_NUMBER(_endp)); |
| 524 | mgcp_free_rtp_port(end); |
Holger Hans Peter Freyther | 6af36c0 | 2010-08-06 07:18:22 +0800 | [diff] [blame] | 525 | } |
| 526 | |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 527 | end->local_port = rtp_port; |
| 528 | end->rtp.cb = cb; |
| 529 | end->rtp.data = _endp; |
| 530 | end->rtcp.data = _endp; |
| 531 | end->rtcp.cb = cb; |
| 532 | return bind_rtp(_endp->cfg, end, ENDPOINT_NUMBER(_endp)); |
| 533 | } |
| 534 | |
| 535 | |
| 536 | int mgcp_bind_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port) |
| 537 | { |
| 538 | return int_bind("bts-port", &endp->bts_end, |
| 539 | rtp_data_bts, endp, rtp_port); |
Holger Hans Peter Freyther | 81938e9 | 2010-08-05 04:10:21 +0800 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port) |
| 543 | { |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 544 | return int_bind("net-port", &endp->net_end, |
| 545 | rtp_data_net, endp, rtp_port); |
Holger Hans Peter Freyther | 5ada53a | 2010-02-21 11:11:04 +0100 | [diff] [blame] | 546 | } |
Holger Hans Peter Freyther | 05d8f5f | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 547 | |
Holger Hans Peter Freyther | c983f83 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 548 | int mgcp_bind_trans_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port) |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 549 | { |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 550 | return int_bind("trans-net", &endp->trans_net, |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 551 | rtp_data_trans_net, endp, rtp_port); |
Holger Hans Peter Freyther | 56ac269 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 552 | } |
| 553 | |
Holger Hans Peter Freyther | c983f83 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 554 | int mgcp_bind_trans_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port) |
| 555 | { |
Holger Hans Peter Freyther | 18f6787 | 2010-11-01 21:15:22 +0100 | [diff] [blame] | 556 | return int_bind("trans-bts", &endp->trans_bts, |
Holger Hans Peter Freyther | 4f2083b | 2010-11-01 21:25:33 +0100 | [diff] [blame] | 557 | rtp_data_trans_bts, endp, rtp_port); |
Holger Hans Peter Freyther | c983f83 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 558 | } |
| 559 | |
Holger Hans Peter Freyther | 05d8f5f | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 560 | int mgcp_free_rtp_port(struct mgcp_rtp_end *end) |
| 561 | { |
Holger Hans Peter Freyther | 05d8f5f | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 562 | if (end->rtp.fd != -1) { |
| 563 | close(end->rtp.fd); |
| 564 | end->rtp.fd = -1; |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 565 | osmo_fd_unregister(&end->rtp); |
Holger Hans Peter Freyther | 05d8f5f | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | if (end->rtcp.fd != -1) { |
| 569 | close(end->rtcp.fd); |
| 570 | end->rtcp.fd = -1; |
Pablo Neira Ayuso | 04d24cd | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 571 | osmo_fd_unregister(&end->rtcp); |
Holger Hans Peter Freyther | 05d8f5f | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | return 0; |
| 575 | } |