mirror of
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This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous.
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.
This commit is contained in:
Gregory Nutt
@@ -1,7 +1,7 @@
|
||||
/****************************************************************************
|
||||
* drivers/audio/wm8776.c
|
||||
*
|
||||
* Copyright 2017,2018 Sony Video & Sound Products Inc.
|
||||
* Copyright 2017, 2018 Sony Video & Sound Products Inc.
|
||||
* Author: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
|
||||
*
|
||||
* Based on drivers/audio/wm8904.c
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||||
|
||||
@@ -0,0 +1,323 @@
|
||||
/****************************************************************************
|
||||
* include/netpacket/netlink.h
|
||||
*
|
||||
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NETPACKET_NETLINK_H
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#define __INCLUDE_NETPACKET_NETLINK_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/socket.h>
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#include <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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|
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/* Netlink socket protocols *************************************************/
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/* The AF_NETLINK family offers multiple protocol subsets. Each interfaces
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* to a different kernel component and has a different messaging subset. The
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* subset is referenced by the protocol field in the socket call:
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*
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* int socket(AF_NETLINK, SOCK_DGRAM or SOCK_RAW, protocol)
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*
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* Ref. Wikipedia.org
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*/
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#define NETLINK_ROUTE 0 /* Routing/device hook for user-space
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* routing daemons */
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#define NETLINK_FIREWALL 1 /* Interface to receive packets from
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* the firewall */
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#define NETLINK_NFLOG 2 /* netfilter/iptables ULOG */
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#define NETLINK_ARPD 3 /* Interface to manage the ARP table */
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#define NETLINK_AUDIT 4 /* Interface to auditing sub-system */
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#define NETLINK_IP6_FW 5 /* Interface to transport packets from
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* netfilter to user-space. */
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#define NETLINK_ROUTE6 6
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#define NETLINK_TAPBASE 7
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#define NETLINK_NETFILTER 8
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#define NETLINK_TCPDIAG 9
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#define NETLINK_XFRM 10 /* Interface to IPsec security databases
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* for key-manager daemons using the Internet
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* Key Exchange protocol. */
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#define NETLINK_USERSOCK 11 /* Reserved for user mode socket protocols */
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/* NETLINK_ROUTE protocol message types *************************************/
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/* Link layer:
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*
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* RTM_NEWLINK, RTM_DELLINK, RTM_GETLINK
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* Create, remove or get information about a specific network interface.
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* These messages contain an ifinfomsg structure followed by a series
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* of rtattr structures.
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*/
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#define RTM_NEWLINK 0
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#define RTM_DELLINK 1
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#define RTM_GETLINK 2
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#define RTM_SETLINK 3
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/* Address settings:
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*
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* RTM_NEWADDR, RTM_DELADDR, RTM_GETADDR
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* Add, remove or receive information about an IP address associated with
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* an interface. These messages contain an ifaddrmsg structure, optionally
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* followed by rtattr routing attributes.
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*/
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#define RTM_NEWADDR 4
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#define RTM_DELADDR 5
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#define RTM_GETADDR 6
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/* Routing tables:
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*
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* RTM_NEWROUTE, RTM_DELROUTE, RTM_GETROUTE
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* Create, remove or receive information about a network route. These
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* messages contain an rtmsg structure with an optional sequence of
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* rtattr structures following.
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*
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* For RTM_GETROUTE, setting rtm_dst_len and rtm_src_len to 0 means you
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* get all entries for the specified routing table. For the other fields,
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* except rtm_table and rtm_protocol, 0 is the wildcard.
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*/
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#define RTM_NEWROUTE 7
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#define RTM_DELROUTE 8
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#define RTM_GETROUTE 9
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/* Neighbor cache:
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*
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* RTM_NEWNEIGH, RTM_DELNEIGH, RTM_GETNEIGH
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* Add, remove or receive information about a neighbor table entry (e.g.,
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* an ARP entry). The message contains an ndmsg structure.
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*/
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#define RTM_NEWNEIGH 10
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#define RTM_DELNEIGH 11
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#define RTM_GETNEIGH 12
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/* Routing rules:
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*
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* RTM_NEWRULE, RTM_DELRULE, RTM_GETRULE
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* Add, delete or retrieve a routing rule. Carries a struct rtmsg
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*/
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#define RTM_NEWRULE 13
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#define RTM_DELRULE 14
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#define RTM_GETRULE 15
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/* Queuing discipline settings:
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*
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* RTM_NEWQDISC, RTM_DELQDISC, RTM_GETQDISC
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* Add, remove or get a queuing discipline. The message contains a
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* struct tcmsg and may be followed by a series of attributes.
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*/
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#define RTM_NEWQDISC 16
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#define RTM_DELQDISC 17
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#define RTM_GETQDISC 18
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/* Traffic classes used with queues:
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*
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* RTM_NEWTCLASS, RTM_DELTCLASS, RTM_GETTCLASS
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* Add, remove or get a traffic class. These messages contain a struct
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* tcmsg as described above.
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*/
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#define RTM_NEWTCLASS 19
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#define RTM_DELTCLASS 20
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#define RTM_GETTCLASS 21
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/* Traffic filters:
|
||||
*
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* RTM_NEWTFILTER, RTM_DELTFILTER, RTM_GETTFILTER
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* Add, remove or receive information about a traffic filter. These
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* messages contain a struct tcmsg as described above.
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*/
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||||
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#define RTM_NEWTFILTER 22
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#define RTM_DELTFILTER 23
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#define RTM_GETTFILTER 24
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/* Others: */
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#define RTM_NEWACTION 25
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#define RTM_DELACTION 26
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#define RTM_GETACTION 27
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#define RTM_NEWPREFIX 28
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#define RTM_GETPREFIX 29
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#define RTM_GETMULTICAST 30
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#define RTM_GETANYCAST 31
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#define RTM_NEWNEIGHTBL 32
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#define RTM_GETNEIGHTBL 33
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#define RTM_SETNEIGHTBL 34
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|
||||
/* Definitions associated with struct sockaddr_nl ***************************/
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||||
/* Flags values */
|
||||
|
||||
#define NLM_F_REQUEST 0x0001 /* It is request message. */
|
||||
#define NLM_F_MULTI 0x0002 /* Multipart message, terminated by NLMSG_DONE */
|
||||
#define NLM_F_ACK 0x0004 /* Reply with ack, with zero or error code */
|
||||
#define NLM_F_ECHO 0x0008 /* Echo this request */
|
||||
#define NLM_F_DUMP_INTR 0x0010 /* Dump was inconsistent due to sequence change */
|
||||
#define NLM_F_DUMP_FILTERED 0x0020 /* Dump was filtered as requested */
|
||||
|
||||
/* Modifiers to GET request */
|
||||
|
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#define NLM_F_ROOT 0x0100 /* specify tree root */
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#define NLM_F_MATCH 0x0200 /* return all matching */
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#define NLM_F_ATOMIC 0x0400 /* atomic GET */
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#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
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|
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/* Modifiers to NEW request */
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||||
|
||||
#define NLM_F_REPLACE 0x0100 /* Override existing */
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#define NLM_F_EXCL 0x0200 /* Do not touch, if it exists */
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#define NLM_F_CREATE 0x0400 /* Create, if it does not exist */
|
||||
#define NLM_F_APPEND 0x0800 /* Add to end of list */
|
||||
|
||||
/* Modifiers to DELETE request */
|
||||
|
||||
#define NLM_F_NONREC 0x0100 /* Do not delete recursively */
|
||||
|
||||
/* Flags for ACK message */
|
||||
|
||||
#define NLM_F_CAPPED 0x0100 /* request was capped */
|
||||
#define NLM_F_ACK_TLVS 0x0200 /* extended ACK TVLs were included */
|
||||
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||||
/* Definitions for struct rtattr ********************************************/
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/* Macros to handle rtattributes */
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#define RTA_ALIGNTO 4
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#define RTA_ALIGN(len) (((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1))
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#define RTA_OK(rta,len) \
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((len) >= (int)sizeof(struct rtattr) && \
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(rta)->rta_len >= sizeof(struct rtattr) && \
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(rta)->rta_len <= (len))
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#define RTA_NEXT(rta,attrlen) \
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((attrlen) -= RTA_ALIGN((rta)->rta_len), \
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(struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
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#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
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#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
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#define RTA_DATA(rta) ((FAR void *)(((FAR char *)(rta)) + RTA_LENGTH(0)))
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#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
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|
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/* Definitions for struct ifaddrmsg ****************************************/
|
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/* ifa_flags definitions: ifa_flags is a flag word of IFA_F_SECONDARY for
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* secondary address (old alias interface), IFA_F_PERMANENT for a permanent
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* address set by the user and other undocumented flags.
|
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*/
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||||
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#define IFA_F_SECONDARY 0x01
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#define IFA_F_PERMANENT 0x02
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||||
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/****************************************************************************
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||||
* Public Type Definitions
|
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****************************************************************************/
|
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|
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/* Netlink socket address type. */
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struct sockaddr_nl
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{
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sa_family_t nl_family; /* AF_NETLINK */
|
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uint16_t nl_pad; /* Zero */
|
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uint32_t nl_pid; /* Port ID */
|
||||
uint32_t nl_groups; /* Multicast groups mask */
|
||||
};
|
||||
|
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/* Packet structure. The Netlink message header, struct nlmsghdr, must be
|
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* prepared by the caller. The Netlink socket generally works in a SOCK_RAW-
|
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* like mode (even if SOCK_DGRAM was used to create it).
|
||||
*
|
||||
* The data portion then contains a subsystem-specific message that may be
|
||||
* further nested.
|
||||
*/
|
||||
|
||||
struct nlmsghdr
|
||||
{
|
||||
uint32_t nlmsg_len; /* Length of message including header */
|
||||
uint16_t nlmsg_type; /* Message content */
|
||||
uint16_t nlmsg_flags; /* Additional flags */
|
||||
uint32_t nlmsg_seq; /* Sequence number */
|
||||
uint32_t nlmsg_pid; /* Sending process port ID */
|
||||
/* Data follows */
|
||||
};
|
||||
|
||||
/* RTM_NEWLINK, RTM_DELLINK, RTM_GETLINK
|
||||
*
|
||||
* Create, remove or get information about a specific network interface.
|
||||
* These messages contain an ifinfomsg structure followed by a series
|
||||
* of rtattr structures.
|
||||
*
|
||||
* These attributes should be manipulated using only the RTA_*
|
||||
*/
|
||||
|
||||
struct rtattr
|
||||
{
|
||||
uint16_t rta_len; /* Length of option */
|
||||
uint16_t rta_type; /* Type of option */
|
||||
/* Data follows */
|
||||
};
|
||||
|
||||
struct ifinfomsg
|
||||
{
|
||||
uint8_t ifi_family; /* AF_UNSPEC */
|
||||
uint16_t ifi_type; /* Device type */
|
||||
int16_t ifi_index; /* Unique interface index */
|
||||
uint32_t ifi_flags; /* Device flags */
|
||||
uint32_t ifi_change; /* Change mask, must always be 0xffffffff */
|
||||
};
|
||||
|
||||
/* RTM_NEWADDR, RTM_DELADDR, RTM_GETADDR
|
||||
*
|
||||
* Add, remove or receive information about an IP address associated with
|
||||
* an interface. These messages contain an ifaddrmsg structure, optionally
|
||||
* followed by rtattr routing attributes.
|
||||
*/
|
||||
|
||||
struct ifaddrmsg
|
||||
{
|
||||
uint8_t ifa_family; /* Address type: AF_INET or AF_INET6 */
|
||||
uint8_t ifa_prefixlen; /* Prefix length of address */
|
||||
uint8_t ifa_flags; /* Address flags. See IFA_F_* definitions */
|
||||
uint8_t ifa_scope; /* Address scope */
|
||||
int16_t ifa_index; /* Unique interface index */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#endif /* __INCLUDE_NETPACKET_NETLINK_H */
|
||||
@@ -62,6 +62,7 @@
|
||||
#define PF_BLUETOOTH 5 /* Bluetooth sockets */
|
||||
#define PF_IEEE802154 6 /* Low level IEEE 802.15.4 radio frame interface */
|
||||
#define PF_PKTRADIO 7 /* Low level packet radio interface */
|
||||
#define PF_NETLINK 8 /* Netlink IPC socket */
|
||||
|
||||
/* Supported Address Families. Opengroup.org requires only AF_UNSPEC,
|
||||
* AF_UNIX, AF_INET and AF_INET6.
|
||||
@@ -76,6 +77,7 @@
|
||||
#define AF_BLUETOOTH PF_BLUETOOTH
|
||||
#define AF_IEEE802154 PF_IEEE802154
|
||||
#define AF_PKTRADIO PF_PKTRADIO
|
||||
#define AF_NETLINK PF_NETLINK
|
||||
|
||||
/* The socket created by socket() has the indicated type, which specifies
|
||||
* the communication semantics.
|
||||
@@ -194,7 +196,7 @@
|
||||
* return: int
|
||||
*/
|
||||
|
||||
/* Protocol-level socket operations */
|
||||
/* Protocol-level socket operations. */
|
||||
|
||||
#define SOL_IP 1 /* See options in include/netinet/ip.h */
|
||||
#define SOL_IPV6 2 /* See options in include/netinet/ip6.h */
|
||||
|
||||
+1
-1
@@ -87,7 +87,6 @@ config NET_SLIP_PKTSIZE
|
||||
256 MSS, but restrict transfers to 128 bytes (possibly by modifying
|
||||
the MSS value in the TCP connection structure).
|
||||
|
||||
|
||||
config NET_GUARDSIZE
|
||||
int "Driver I/O guard size"
|
||||
default 2
|
||||
@@ -307,6 +306,7 @@ source "net/socket/Kconfig"
|
||||
source "net/inet/Kconfig"
|
||||
source "net/pkt/Kconfig"
|
||||
source "net/local/Kconfig"
|
||||
source "net/netlink/Kconfig"
|
||||
source "net/tcp/Kconfig"
|
||||
source "net/udp/Kconfig"
|
||||
source "net/bluetooth/Kconfig"
|
||||
|
||||
@@ -65,6 +65,7 @@ include neighbor/Make.defs
|
||||
include igmp/Make.defs
|
||||
include pkt/Make.defs
|
||||
include local/Make.defs
|
||||
include netlink/Make.defs
|
||||
include tcp/Make.defs
|
||||
include udp/Make.defs
|
||||
include sixlowpan/Make.defs
|
||||
|
||||
@@ -20,6 +20,7 @@ Directory Structure
|
||||
+- loopback - Local loopback
|
||||
+- neighbor - Neighbor Discovery Protocol (IPv6)
|
||||
+- netdev - Socket network device interface
|
||||
+- netlink - Netlink IPC socket interface
|
||||
+- pkt - "Raw" packet socket support
|
||||
+- sixlowpan - 6LoWPAN implementation
|
||||
+- socket - BSD socket interface
|
||||
|
||||
@@ -60,6 +60,7 @@
|
||||
#include "bluetooth/bluetooth.h"
|
||||
#include "ieee802154/ieee802154.h"
|
||||
#include "local/local.h"
|
||||
#include "netlink/netlink.h"
|
||||
#include "igmp/igmp.h"
|
||||
#include "route/route.h"
|
||||
#include "usrsock/usrsock.h"
|
||||
@@ -160,6 +161,12 @@ void net_setup(void)
|
||||
local_initialize();
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_NET_NETLINK
|
||||
/* Initialize the Netlink IPC support */
|
||||
|
||||
netlink_initialize();
|
||||
#endif
|
||||
|
||||
#ifdef NET_TCP_HAVE_STACK
|
||||
/* Initialize the listening port structures */
|
||||
|
||||
|
||||
@@ -0,0 +1,26 @@
|
||||
#
|
||||
# For a description of the syntax of this configuration file,
|
||||
# see the file kconfig-language.txt in the NuttX tools repository.
|
||||
#
|
||||
|
||||
config NET_NETLINK
|
||||
bool "Netlink socket support"
|
||||
default n
|
||||
depends on EXPERIMENTAL
|
||||
---help---
|
||||
Enable support for Nelink-like IPC sockets that will permit user-
|
||||
space applications to interact with network services.
|
||||
|
||||
This logic is a WIP. Currenlty only fragmentary support is
|
||||
available, not enough to actually do antything of consequence.
|
||||
Hence, the feature depends on EXPERIMENTAL.
|
||||
|
||||
if NET_NETLINK
|
||||
|
||||
config NET_NETLINK_CONNS
|
||||
int "Number of netlink connections"
|
||||
default 4
|
||||
---help---
|
||||
Maximum number of netlink connections (all tasks).
|
||||
|
||||
endif # NET_NETLINK
|
||||
@@ -0,0 +1,46 @@
|
||||
############################################################################
|
||||
# net/netlink/Make.defs
|
||||
#
|
||||
# Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
# Logic specific to IPv6 Neighbor Discovery Protocol
|
||||
|
||||
ifeq ($(CONFIG_NET_NETLINK),y)
|
||||
|
||||
SOCK_CSRCS += netlink_sockif.c netlink_conn.c
|
||||
|
||||
# Include netlink build support
|
||||
|
||||
DEPPATH += --dep-path netlink
|
||||
VPATH += :netlink
|
||||
endif
|
||||
@@ -0,0 +1,156 @@
|
||||
/****************************************************************************
|
||||
* net/netlink/netlink.h
|
||||
*
|
||||
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __NET_NETLINK_NETLINK_H
|
||||
#define __NET_NETLINK_NETLINK_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <queue.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
#include "devif/devif.h"
|
||||
#include "socket/socket.h"
|
||||
|
||||
#ifdef CONFIG_NET_NETLINK
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Type Definitions
|
||||
****************************************************************************/
|
||||
|
||||
struct netlink_conn_s
|
||||
{
|
||||
dq_entry_t node; /* Supports a doubly linked list */
|
||||
uint8_t crefs; /* Reference counts on this instance */
|
||||
|
||||
/* Defines the list of netlink callbacks */
|
||||
|
||||
FAR struct devif_callback_s *list;
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
# define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
# define EXTERN extern
|
||||
#endif
|
||||
|
||||
EXTERN const struct sock_intf_s g_netlink_sockif;
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_initialize()
|
||||
*
|
||||
* Description:
|
||||
* Initialize the User Socket connection structures. Called once and only
|
||||
* from the networking layer.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void netlink_initialize(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_alloc()
|
||||
*
|
||||
* Description:
|
||||
* Allocate a new, uninitialized netlink connection structure. This is
|
||||
* normally something done by the implementation of the socket() API
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct netlink_conn_s *netlink_alloc(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_free()
|
||||
*
|
||||
* Description:
|
||||
* Free a netlink connection structure that is no longer in use. This should
|
||||
* be done by the implementation of close().
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void netlink_free(FAR struct netlink_conn_s *conn);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_nextconn()
|
||||
*
|
||||
* Description:
|
||||
* Traverse the list of allocated netlink connections
|
||||
*
|
||||
* Assumptions:
|
||||
* This function is called from netlink device logic.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct netlink_conn_s *netlink_nextconn(FAR struct netlink_conn_s *conn);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_active()
|
||||
*
|
||||
* Description:
|
||||
* Find a connection structure that is the appropriate connection for the
|
||||
* provided netlink address
|
||||
*
|
||||
* Assumptions:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
struct sockaddr_nl; /* Forward reference */
|
||||
FAR struct netlink_conn_s *netlink_active(FAR struct sockaddr_nl *addr);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_NET_NETLINK */
|
||||
#endif /* __NET_NETLINK_NETLINK_H */
|
||||
@@ -0,0 +1,246 @@
|
||||
/****************************************************************************
|
||||
* net/netlink/netlink_conn.c
|
||||
*
|
||||
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <arch/irq.h>
|
||||
|
||||
#include <nuttx/semaphore.h>
|
||||
#include <nuttx/net/netconfig.h>
|
||||
#include <nuttx/net/net.h>
|
||||
|
||||
#include "netlink/netlink.h"
|
||||
|
||||
#ifdef CONFIG_NET_NETLINK
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
/* The array containing all netlink connections. */
|
||||
|
||||
static struct netlink_conn_s g_netlink_connections[CONFIG_NET_NETLINK_CONNS];
|
||||
|
||||
/* A list of all free netlink connections */
|
||||
|
||||
static dq_queue_t g_free_netlink_connections;
|
||||
static sem_t g_free_sem;
|
||||
|
||||
/* A list of all allocated netlink connections */
|
||||
|
||||
static dq_queue_t g_active_netlink_connections;
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: _netlink_semtake() and _netlink_semgive()
|
||||
*
|
||||
* Description:
|
||||
* Take/give semaphore
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void _netlink_semtake(FAR sem_t *sem)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* Take the semaphore (perhaps waiting) */
|
||||
|
||||
while ((ret = net_lockedwait(sem)) < 0)
|
||||
{
|
||||
/* The only case that an error should occur here is if
|
||||
* the wait was awakened by a signal.
|
||||
*/
|
||||
|
||||
DEBUGASSERT(ret == -EINTR || ret == -ECANCELED);
|
||||
}
|
||||
}
|
||||
|
||||
static void _netlink_semgive(FAR sem_t *sem)
|
||||
{
|
||||
(void)nxsem_post(sem);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_initialize()
|
||||
*
|
||||
* Description:
|
||||
* Initialize the User Socket connection structures. Called once and only
|
||||
* from the networking layer.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void netlink_initialize(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* Initialize the queues */
|
||||
|
||||
dq_init(&g_free_netlink_connections);
|
||||
dq_init(&g_active_netlink_connections);
|
||||
nxsem_init(&g_free_sem, 0, 1);
|
||||
|
||||
for (i = 0; i < CONFIG_NET_NETLINK_CONNS; i++)
|
||||
{
|
||||
FAR struct netlink_conn_s *conn = &g_netlink_connections[i];
|
||||
|
||||
/* Mark the connection closed and move it to the free list */
|
||||
|
||||
memset(conn, 0, sizeof(*conn));
|
||||
dq_addlast(&conn->node, &g_free_netlink_connections);
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_alloc()
|
||||
*
|
||||
* Description:
|
||||
* Allocate a new, uninitialized netlink connection structure. This is
|
||||
* normally something done by the implementation of the socket() API
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct netlink_conn_s *netlink_alloc(void)
|
||||
{
|
||||
FAR struct netlink_conn_s *conn;
|
||||
|
||||
/* The free list is protected by a semaphore (that behaves like a mutex). */
|
||||
|
||||
_netlink_semtake(&g_free_sem);
|
||||
conn = (FAR struct netlink_conn_s *)dq_remfirst(&g_free_netlink_connections);
|
||||
if (conn)
|
||||
{
|
||||
/* Make sure that the connection is marked as uninitialized */
|
||||
|
||||
memset(conn, 0, sizeof(*conn));
|
||||
|
||||
/* Enqueue the connection into the active list */
|
||||
|
||||
dq_addlast(&conn->node, &g_active_netlink_connections);
|
||||
}
|
||||
|
||||
_netlink_semgive(&g_free_sem);
|
||||
return conn;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_free()
|
||||
*
|
||||
* Description:
|
||||
* Free a netlink connection structure that is no longer in use. This should
|
||||
* be done by the implementation of close().
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void netlink_free(FAR struct netlink_conn_s *conn)
|
||||
{
|
||||
/* The free list is protected by a semaphore (that behaves like a mutex). */
|
||||
|
||||
DEBUGASSERT(conn->crefs == 0);
|
||||
|
||||
_netlink_semtake(&g_free_sem);
|
||||
|
||||
/* Remove the connection from the active list */
|
||||
|
||||
dq_rem(&conn->node, &g_active_netlink_connections);
|
||||
|
||||
/* Reset structure */
|
||||
|
||||
memset(conn, 0, sizeof(*conn));
|
||||
|
||||
/* Free the connection */
|
||||
|
||||
dq_addlast(&conn->node, &g_free_netlink_connections);
|
||||
_netlink_semgive(&g_free_sem);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_nextconn()
|
||||
*
|
||||
* Description:
|
||||
* Traverse the list of allocated netlink connections
|
||||
*
|
||||
* Assumptions:
|
||||
* This function is called from netlink device logic.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct netlink_conn_s *netlink_nextconn(FAR struct netlink_conn_s *conn)
|
||||
{
|
||||
if (conn == NULL)
|
||||
{
|
||||
return (FAR struct netlink_conn_s *)g_active_netlink_connections.head;
|
||||
}
|
||||
else
|
||||
{
|
||||
return (FAR struct netlink_conn_s *)conn->node.flink;
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: netlink_active()
|
||||
*
|
||||
* Description:
|
||||
* Find a connection structure that is the appropriate connection for the
|
||||
* provided netlink address
|
||||
*
|
||||
* Assumptions:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct netlink_conn_s *netlink_active(FAR struct sockaddr_nl *addr)
|
||||
{
|
||||
FAR struct netlink_conn_s *conn = NULL;
|
||||
#warning "Missing logic for NETLINK active"
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_NET_NETLINK */
|
||||
File diff suppressed because it is too large
Load Diff
@@ -47,6 +47,7 @@
|
||||
|
||||
#include "inet/inet.h"
|
||||
#include "local/local.h"
|
||||
#include "netlink/netlink.h"
|
||||
#include "pkt/pkt.h"
|
||||
#include "bluetooth/bluetooth.h"
|
||||
#include "ieee802154/ieee802154.h"
|
||||
@@ -103,6 +104,12 @@ FAR const struct sock_intf_s *
|
||||
break;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_NET_NETLINK
|
||||
case PF_NETLINK:
|
||||
sockif = &g_netlink_sockif;
|
||||
break;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_NET_PKT
|
||||
case PF_PACKET:
|
||||
sockif = &g_pkt_sockif;
|
||||
|
||||
Reference in New Issue
Block a user