void uip_tcpfree(struct uip_conn *conn)
{
#if CONFIG_NET_NTCP_READAHEAD_BUFFERS > 0
struct uip_readahead_s *readahead;
#endif
uip_lock_t flags;
/* Because g_free_tcp_connections is accessed from user level and interrupt
* level, code, it is necessary to keep interrupts disabled during this
* operation.
*/
DEBUGASSERT(conn->crefs == 0);
flags = uip_lock();
/* UIP_ALLOCATED means that that the connection is not in the active list
* yet.
*/
if (conn->tcpstateflags != UIP_ALLOCATED)
{
/* Remove the connection from the active list */
dq_rem(&conn->node, &g_active_tcp_connections);
}
/* Release any read-ahead buffers attached to the connection */
#if CONFIG_NET_NTCP_READAHEAD_BUFFERS > 0
while ((readahead = (struct uip_readahead_s *)sq_remfirst(&conn->readahead)) != NULL)
{
uip_tcpreadaheadrelease(readahead);
}
#endif
/* Remove any backlog attached to this connection */
#ifdef CONFIG_NET_TCPBACKLOG
if (conn->backlog)
{
uip_backlogdestroy(conn);
}
/* If this connection is, itself, backlogged, then remove it from the
* parent connection's backlog list.
*/
if (conn->blparent)
{
uip_backlogdelete(conn->blparent, conn);
}
#endif
/* Mark the connection available and put it into the free list */
conn->tcpstateflags = UIP_CLOSED;
dq_addlast(&conn->node, &g_free_tcp_connections);
uip_unlock(flags);
}
void uip_tcpfree(struct uip_conn *conn)
{
FAR struct uip_callback_s *cb;
FAR struct uip_callback_s *next;
#ifdef CONFIG_NET_TCP_READAHEAD
FAR struct uip_readahead_s *readahead;
#endif
#ifdef CONFIG_NET_TCP_WRITE_BUFFERS
FAR struct uip_wrbuffer_s *wrbuffer;
#endif
uip_lock_t flags;
/* Because g_free_tcp_connections is accessed from user level and interrupt
* level, code, it is necessary to keep interrupts disabled during this
* operation.
*/
DEBUGASSERT(conn->crefs == 0);
flags = uip_lock();
/* Free remaining callbacks, actually there should be only the close callback
* left.
*/
for (cb = conn->list; cb; cb = next)
{
next = cb->flink;
uip_tcpcallbackfree(conn, cb);
}
/* UIP_ALLOCATED means that that the connection is not in the active list
* yet.
*/
if (conn->tcpstateflags != UIP_ALLOCATED)
{
/* Remove the connection from the active list */
dq_rem(&conn->node, &g_active_tcp_connections);
}
#ifdef CONFIG_NET_TCP_READAHEAD
/* Release any read-ahead buffers attached to the connection */
while ((readahead = (struct uip_readahead_s *)sq_remfirst(&conn->readahead)) != NULL)
{
uip_tcpreadahead_release(readahead);
}
#endif
#ifdef CONFIG_NET_TCP_WRITE_BUFFERS
/* Release any write buffers attached to the connection */
while ((wrbuffer = (struct uip_wrbuffer_s *)sq_remfirst(&conn->write_q)) != NULL)
{
uip_tcpwrbuffer_release(wrbuffer);
}
while ((wrbuffer = (struct uip_wrbuffer_s *)sq_remfirst(&conn->unacked_q)) != NULL)
{
uip_tcpwrbuffer_release(wrbuffer);
}
#endif
#ifdef CONFIG_NET_TCPBACKLOG
/* Remove any backlog attached to this connection */
if (conn->backlog)
{
uip_backlogdestroy(conn);
}
/* If this connection is, itself, backlogged, then remove it from the
* parent connection's backlog list.
*/
if (conn->blparent)
{
uip_backlogdelete(conn->blparent, conn);
}
#endif
/* Mark the connection available and put it into the free list */
conn->tcpstateflags = UIP_CLOSED;
dq_addlast(&conn->node, &g_free_tcp_connections);
uip_unlock(flags);
}
