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use osmo_stream_cli to manage sctp Iuh conn

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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
This commit is contained in:
Pau Espin Pedrol
2021-10-28 18:34:44 +02:00
parent 5b86a80193
commit feb5d9a1c7
2 changed files with 45 additions and 53 deletions
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4
include/osmocom/hnodeb/hnodeb.h
View File

@@ -59,8 +59,7 @@ struct hnb {
uint16_t local_port;
char *remote_addr;
uint16_t remote_port;
/*! SCTP socket + write queue for Iuh to this specific HNB */
struct osmo_wqueue wqueue;
struct osmo_stream_cli *client;
} iuh;
uint16_t rnc_id;
@@ -72,6 +71,7 @@ struct hnb {
} cs;
};
struct hnb *hnb_alloc(void *tall_ctx);
void hnb_free(struct hnb *hnb);
int hnb_connect(struct hnb *hnb);
int hnb_iuh_send(struct hnb *hnb, struct msgb *msg);

94
src/osmo-hnodeb/hnb.c
View File

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