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Networking: TCP disconnection callbacks are not retained in a list. This will support mutiple callbacks per lower-level TCP connection structure. That is necessary for the cae where a socket is dup'ed and shares the same lower-level connection structure. NOTE: There still needs to be a call to tcp_start_monitor() when the socket is dup'ed.

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This commit is contained in:
Gregory Nutt
2017-08-29 10:38:01 -06:00
parent ed58536c3a
commit 9db65dea78
3 changed files with 77 additions and 86 deletions
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35
net/tcp/tcp.h
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@@ -74,15 +74,6 @@
#define tcp_callback_free(conn,cb) \
devif_conn_callback_free((conn)->dev, (cb), &(conn)->list)
/* These macros allocate and free callback structures used for receiving
* notifications of device-related events.
*/
#define tcp_monitor_callback_alloc(conn) \
devif_callback_alloc((conn)->dev, NULL)
#define tcp_monitor_callback_free(conn,cb) \
devif_conn_callback_free((conn)->dev, (cb), NULL)
#ifdef CONFIG_NET_TCP_WRITE_BUFFERS
/* TCP write buffer access macros */
@@ -231,6 +222,14 @@ struct tcp_conn_s
FAR struct devif_callback_s *list;
/* connevents is a list of callbacks for each socket the uses this
* connection (there can be more that one in the event that the the socket
* was dup'ed). It is used with the network monitor to handle
* asynchronous loss-of-connection events.
*/
FAR struct devif_callback_s *connevents;
/* accept() is called when the TCP logic has created a connection
*
* accept_private: This is private data that will be available to the
@@ -241,24 +240,6 @@ struct tcp_conn_s
FAR void *accept_private;
int (*accept)(FAR struct tcp_conn_s *listener, FAR struct tcp_conn_s *conn);
/* connection_event() is called on any of the subset of connection-related
* events.
*
* connection_private: This is private data that will be available to
* the connection_event() handler when it is invoked with a point to
* this structure as an argument.
* connection_devcb: this is the allocated callback structure that is
* used to
* connection_event: This is the pointer to the connection event
* handler.
*/
FAR void *connection_private;
FAR struct devif_callback_s *connection_devcb;
uint16_t (*connection_event)(FAR struct net_driver_s *dev,
FAR void *pvconn, FAR void *pvpriv,
uint16_t flags);
};
/* This structure supports TCP write buffering */