net/can/can.h: Add can_setsockopt and can_getsockopt prototypes.

net/can/can.h

@@ -376,6 +376,69 @@ ssize_t psock_can_sendmsg(FAR struct socket *psock, FAR struct msghdr *msg);
 void can_readahead_signal(FAR struct can_conn_s *conn);
 #endif
 
+/****************************************************************************
+ * Name: can_setsockopt
+ *
+ * Description:
+ *   can_setsockopt() sets the CAN-protocol option specified by the
+ *   'option' argument to the value pointed to by the 'value' argument for
+ *   the socket specified by the 'psock' argument.
+ *
+ *   See <netinet/can.h> for the a complete list of values of CAN protocol
+ *   options.
+ *
+ * Input Parameters:
+ *   psock     Socket structure of socket to operate on
+ *   option    identifies the option to set
+ *   value     Points to the argument value
+ *   value_len The length of the argument value
+ *
+ * Returned Value:
+ *   Returns zero (OK) on success.  On failure, it returns a negated errno
+ *   value to indicate the nature of the error.  See psock_setcockopt() for
+ *   the list of possible error values.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_CANPROTO_OPTIONS
+int can_setsockopt(FAR struct socket *psock, int option,
+                   FAR const void *value, socklen_t value_len);
+#endif
+
+/****************************************************************************
+ * Name: can_getsockopt
+ *
+ * Description:
+ *   can_getsockopt() retrieves the value for the option specified by the
+ *   'option' argument for the socket specified by the 'psock' argument.  If
+ *   the size of the option value is greater than 'value_len', the value
+ *   stored in the object pointed to by the 'value' argument will be silently
+ *   truncated. Otherwise, the length pointed to by the 'value_len' argument
+ *   will be modified to indicate the actual length of the 'value'.
+ *
+ *   See <sys/socket.h> a complete list of values for the socket-level
+ *   'option' argument.  Protocol-specific options are are protocol specific
+ *   header files (such as netpacket/can.h for the case of the CAN protocol).
+ *
+ * Input Parameters:
+ *   psock     Socket structure of the socket to query
+ *   level     Protocol level to set the option
+ *   option    identifies the option to get
+ *   value     Points to the argument value
+ *   value_len The length of the argument value
+ *
+ * Returned Value:
+ *   Returns zero (OK) on success.  On failure, it returns a negated errno
+ *   value to indicate the nature of the error.  See psock_getsockopt() for
+ *   the complete list of appropriate return error codes.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_CANPROTO_OPTIONS
+int can_getsockopt(FAR struct socket *psock, int option,
+                   FAR void *value, FAR socklen_t *value_len);
+#endif
+
 #undef EXTERN
 #ifdef __cplusplus
 }

net/socket/getsockopt.c

@@ -52,6 +52,7 @@
 #include "tcp/tcp.h"
 #include "usrsock/usrsock.h"
 #include "utils/utils.h"
+#include "can/can.h"
 
 /****************************************************************************
  * Private Functions

net/socket/setsockopt.c

@@ -57,6 +57,7 @@
 #include "udp/udp.h"
 #include "usrsock/usrsock.h"
 #include "utils/utils.h"
+#include "can/can.h"
 
 /****************************************************************************
  * Public Functions