use osmo_stream_cli to manage sctp Iuh conn
Let's use already available functionality to handle the conn for us. This is specially useful since we gain a connect_cb. Change-Id: I9d884231577aa47af22cd6319130ca5c9e595d61
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5b86a80193
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@ -59,8 +59,7 @@ struct hnb {
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uint16_t local_port;
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char *remote_addr;
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uint16_t remote_port;
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/*! SCTP socket + write queue for Iuh to this specific HNB */
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struct osmo_wqueue wqueue;
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struct osmo_stream_cli *client;
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} iuh;
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uint16_t rnc_id;
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@ -72,6 +71,7 @@ struct hnb {
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} cs;
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};
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struct hnb *hnb_alloc(void *tall_ctx);
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void hnb_free(struct hnb *hnb);
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int hnb_connect(struct hnb *hnb);
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int hnb_iuh_send(struct hnb *hnb, struct msgb *msg);
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@ -36,22 +36,10 @@
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#include <osmocom/hnodeb/rua.h>
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#include <osmocom/hnodeb/hnodeb.h>
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static int sctp_sock_init(int fd)
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static int hnb_iuh_read_cb(struct osmo_stream_cli *conn)
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{
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struct sctp_event_subscribe event;
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int rc;
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/* subscribe for all events */
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memset((uint8_t *)&event, 1, sizeof(event));
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rc = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS,
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&event, sizeof(event));
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return rc;
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}
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static int hnb_iuh_read_cb(struct osmo_fd *fd)
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{
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struct hnb *hnb = fd->data;
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struct osmo_fd *fd = osmo_stream_cli_get_ofd(conn);
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struct hnb *hnb = osmo_stream_cli_get_data(conn);
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struct sctp_sndrcvinfo sinfo;
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struct msgb *msg = msgb_alloc(IUH_MSGB_SIZE, "Iuh rx");
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int flags = 0;
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@ -65,15 +53,11 @@ static int hnb_iuh_read_cb(struct osmo_fd *fd)
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if (rc < 0) {
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LOGP(DMAIN, LOGL_ERROR, "Error during sctp_recvmsg()\n");
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/* FIXME: clean up after disappeared HNB */
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close(fd->fd);
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osmo_fd_unregister(fd);
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osmo_stream_cli_close(conn);
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return rc;
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} else if (rc == 0) {
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LOGP(DMAIN, LOGL_INFO, "Connection to HNB closed\n");
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close(fd->fd);
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osmo_fd_unregister(fd);
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fd->fd = -1;
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osmo_stream_cli_close(conn);
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return -1;
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} else {
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msgb_put(msg, rc);
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@ -114,42 +98,48 @@ static int hnb_iuh_read_cb(struct osmo_fd *fd)
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return rc;
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}
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static int hnb_iuh_write_cb(struct osmo_fd *fd, struct msgb *msg)
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static int hnb_iuh_connect_cb(struct osmo_stream_cli *cli)
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{
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/* struct hnb *ctx = fd->data; */
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struct sctp_sndrcvinfo sinfo = {
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.sinfo_ppid = htonl(msgb_sctp_ppid(msg)),
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.sinfo_stream = 0,
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};
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int rc;
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LOGP(DMAIN, LOGL_DEBUG, "Sending: %s\n", osmo_hexdump(msgb_data(msg), msgb_length(msg)));
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rc = sctp_send(fd->fd, msgb_data(msg), msgb_length(msg),
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&sinfo, 0);
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/* we don't need to msgb_free(), write_queue does this for us */
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return rc;
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LOGP(DMAIN, LOGL_NOTICE, "Iuh connected to HNBGW\n");
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return 0;
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}
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struct hnb *hnb_alloc(void *tall_ctx)
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{
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struct hnb *hnb;
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struct osmo_stream_cli *cli;
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hnb = talloc_zero(tall_ctx, struct hnb);
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if (!hnb)
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return NULL;
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hnb->iuh.local_addr = NULL;
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hnb->iuh.local_addr = talloc_strdup(hnb, "0.0.0.0");
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hnb->iuh.local_port = 0;
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hnb->iuh.remote_addr = talloc_strdup(hnb, "127.0.0.1");
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hnb->iuh.remote_port = IUH_DEFAULT_SCTP_PORT;
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osmo_wqueue_init(&hnb->iuh.wqueue, 16);
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hnb->iuh.wqueue.bfd.data = hnb;
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hnb->iuh.wqueue.read_cb = hnb_iuh_read_cb;
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hnb->iuh.wqueue.write_cb = hnb_iuh_write_cb;
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cli = osmo_stream_cli_create(hnb);
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OSMO_ASSERT(cli);
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hnb->iuh.client = cli;
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osmo_stream_cli_set_nodelay(cli, true);
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osmo_stream_cli_set_proto(cli, IPPROTO_SCTP);
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osmo_stream_cli_set_reconnect_timeout(cli, 5);
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osmo_stream_cli_set_connect_cb(cli, hnb_iuh_connect_cb);
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osmo_stream_cli_set_read_cb(cli, hnb_iuh_read_cb);
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osmo_stream_cli_set_data(cli, hnb);
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return hnb;
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}
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void hnb_free(struct hnb *hnb)
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{
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if (hnb->iuh.client) {
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osmo_stream_cli_destroy(hnb->iuh.client);
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hnb->iuh.client = NULL;
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}
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talloc_free(hnb);
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}
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int hnb_connect(struct hnb *hnb)
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{
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int rc;
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@ -157,21 +147,23 @@ int hnb_connect(struct hnb *hnb)
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LOGP(DMAIN, LOGL_INFO, "Iuh Connect: %s[:%u] => %s[:%u]\n",
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hnb->iuh.local_addr, hnb->iuh.local_port, hnb->iuh.remote_addr, hnb->iuh.remote_port);
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rc = osmo_sock_init2_ofd(&hnb->iuh.wqueue.bfd, AF_INET, SOCK_STREAM, IPPROTO_SCTP,
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hnb->iuh.local_addr, hnb->iuh.local_port,
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hnb->iuh.remote_addr, hnb->iuh.remote_port,
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OSMO_SOCK_F_BIND |OSMO_SOCK_F_CONNECT);
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if (rc < 0)
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return rc;
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sctp_sock_init(hnb->iuh.wqueue.bfd.fd);
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osmo_stream_cli_set_addrs(hnb->iuh.client, (const char**)&hnb->iuh.remote_addr, 1);
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osmo_stream_cli_set_port(hnb->iuh.client, hnb->iuh.remote_port);
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osmo_stream_cli_set_local_addrs(hnb->iuh.client, (const char**)&hnb->iuh.local_addr, 1);
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osmo_stream_cli_set_local_port(hnb->iuh.client, hnb->iuh.local_port);
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rc = osmo_stream_cli_open(hnb->iuh.client);
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if (rc < 0) {
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LOGP(DMAIN, LOGL_ERROR, "Unable to open stream client for Iuh %s[:%u] => %s[:%u]\n",
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hnb->iuh.local_addr, hnb->iuh.local_port, hnb->iuh.remote_addr, hnb->iuh.remote_port);
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/* we don't return error in here because osmo_stream_cli_open()
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will continue to retry (due to timeout being explicitly set with
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osmo_stream_cli_set_reconnect_timeout() above) to connect so the error is transient */
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}
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return 0;
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}
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int hnb_iuh_send(struct hnb *hnb, struct msgb *msg)
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{
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int rc;
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rc = osmo_wqueue_enqueue(&hnb->iuh.wqueue, msg);
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if (rc < 0)
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msgb_free(msg);
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return rc;
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osmo_stream_cli_send(hnb->iuh.client, msg);
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return 0;
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}
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