056d704cf9
Squashed commit of the following:
net/netlink: Mark netlink support as EXPERIMENTAL.
net/netlink/netlink_sockif.c: Add netlink_getpeername to the socket interface.
net: Add getpeeername() support for netlink sockets.
include/netpacket/netlink.h: Add a few more definitions and structures used at the NetLink interface. Still missing many.
net/netlink: Add basic framework for Netlink socket support.
include/: Add basic Netlink definitions.
157 lines
5.3 KiB
C
157 lines
5.3 KiB
C
/****************************************************************************
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* net/netlink/netlink.h
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __NET_NETLINK_NETLINK_H
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#define __NET_NETLINK_NETLINK_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <queue.h>
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#include <semaphore.h>
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#include "devif/devif.h"
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#include "socket/socket.h"
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#ifdef CONFIG_NET_NETLINK
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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struct netlink_conn_s
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{
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dq_entry_t node; /* Supports a doubly linked list */
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uint8_t crefs; /* Reference counts on this instance */
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/* Defines the list of netlink callbacks */
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FAR struct devif_callback_s *list;
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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# define EXTERN extern "C"
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extern "C"
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{
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#else
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# define EXTERN extern
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#endif
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EXTERN const struct sock_intf_s g_netlink_sockif;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: netlink_initialize()
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*
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* Description:
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* Initialize the User Socket connection structures. Called once and only
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* from the networking layer.
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*
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****************************************************************************/
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void netlink_initialize(void);
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/****************************************************************************
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* Name: netlink_alloc()
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*
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* Description:
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* Allocate a new, uninitialized netlink connection structure. This is
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* normally something done by the implementation of the socket() API
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*
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****************************************************************************/
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FAR struct netlink_conn_s *netlink_alloc(void);
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/****************************************************************************
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* Name: netlink_free()
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*
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* Description:
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* Free a netlink connection structure that is no longer in use. This should
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* be done by the implementation of close().
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*
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****************************************************************************/
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void netlink_free(FAR struct netlink_conn_s *conn);
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/****************************************************************************
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* Name: netlink_nextconn()
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*
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* Description:
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* Traverse the list of allocated netlink connections
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*
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* Assumptions:
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* This function is called from netlink device logic.
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*
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****************************************************************************/
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FAR struct netlink_conn_s *netlink_nextconn(FAR struct netlink_conn_s *conn);
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/****************************************************************************
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* Name: netlink_active()
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*
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* Description:
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* Find a connection structure that is the appropriate connection for the
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* provided netlink address
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*
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* Assumptions:
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*
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****************************************************************************/
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struct sockaddr_nl; /* Forward reference */
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FAR struct netlink_conn_s *netlink_active(FAR struct sockaddr_nl *addr);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_NET_NETLINK */
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#endif /* __NET_NETLINK_NETLINK_H */
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