diff options
authorStefan Sperling <ssperling@sysmocom.de>2018-02-22 17:17:04 +0100
committerStefan Sperling <ssperling@sysmocom.de>2018-02-22 17:17:04 +0100
commitca5ac9a5ef8bf78e62767eca103ffb62200109bc (patch)
parent2cbaf4139ae768ff5a79c79d389045b4ef4dd0e6 (diff)
add a txflush callback to osmo_stream_srv_send()stsp/destroy_conn_with_txflush_callback
Define a txlush() callback which can be set on a connection and which will be invoked whenever the tx queue is empty upon entry to osmo_stream_srv_send(). Change-Id: I4c63584af69f9a1ee5622a709756916bfef474ee
2 files changed, 13 insertions, 0 deletions
diff --git a/include/osmocom/netif/stream.h b/include/osmocom/netif/stream.h
index 4e1beb6..27a1be2 100644
--- a/include/osmocom/netif/stream.h
+++ b/include/osmocom/netif/stream.h
@@ -41,6 +41,7 @@ struct osmo_stream_srv_link *osmo_stream_srv_get_master(struct osmo_stream_srv *
struct osmo_fd *osmo_stream_srv_get_ofd(struct osmo_stream_srv *srv);
void osmo_stream_srv_destroy(struct osmo_stream_srv *conn);
+void osmo_stream_srv_set_txflushed_cb(struct osmo_stream_srv *conn, void (*txflushed_cb)(struct osmo_stream_srv *conn, void *data));
void osmo_stream_srv_set_data(struct osmo_stream_srv *conn, void *data);
void osmo_stream_srv_send(struct osmo_stream_srv *conn, struct msgb *msg);
diff --git a/src/stream.c b/src/stream.c
index 8a1be38..1cd1a85 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -778,6 +778,7 @@ struct osmo_stream_srv {
struct llist_head tx_queue;
int (*closed_cb)(struct osmo_stream_srv *peer);
int (*cb)(struct osmo_stream_srv *peer);
+ void (*txflushed_cb)(struct osmo_stream_srv *conn, void *data);
void *data;
@@ -804,6 +805,8 @@ static void osmo_stream_srv_write(struct osmo_stream_srv *conn)
if (llist_empty(&conn->tx_queue)) {
conn->ofd.when &= ~BSC_FD_WRITE;
+ if (conn->txflushed_cb)
+ conn->txflushed_cb(conn, conn->data);
lh = conn->tx_queue.next;
@@ -880,6 +883,15 @@ osmo_stream_srv_create(void *ctx, struct osmo_stream_srv_link *link,
return conn;
+/*! \brief Set a callback which will be called once the stream's TX queue has been flushed.
+ * \param[in] conn Stream Server to set the callback on
+ * \param[in] data User-specific data (available in call-back functions) */
+osmo_stream_srv_set_txflushed_cb(struct osmo_stream_srv *conn, void (*txflushed_cb)(struct osmo_stream_srv *conn, void *data))
+ conn->txflushed_cb = txflushed_cb;
/*! \brief Set application private data of the stream server
* \param[in] conn Stream Server to modify
* \param[in] data User-specific data (available in call-back functions) */