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netpacket/if_addr: add interface address header

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Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an
2021-01-05 20:16:17 +08:00
committed by Xiang Xiao
parent a150e03e24
commit 92259cb194
2 changed files with 114 additions and 31 deletions
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112
include/netpacket/if_addr.h Normal file
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@@ -0,0 +1,112 @@
/****************************************************************************
* include/netpacket/if_addr.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_NETPACKET_IF_ADDR_H
#define __INCLUDE_NETPACKET_IF_ADDR_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/types.h>
#include <netpacket/netlink.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define IFA_MAX (__IFA_MAX - 1)
/* ifa_flags */
#define IFA_F_SECONDARY 0x01
#define IFA_F_TEMPORARY IFA_F_SECONDARY
#define IFA_F_NODAD 0x02
#define IFA_F_OPTIMISTIC 0x04
#define IFA_F_DADFAILED 0x08
#define IFA_F_HOMEADDRESS 0x10
#define IFA_F_DEPRECATED 0x20
#define IFA_F_TENTATIVE 0x40
#define IFA_F_PERMANENT 0x80
#define IFA_F_MANAGETEMPADDR 0x100
#define IFA_F_NOPREFIXROUTE 0x200
#define IFA_F_MCAUTOJOIN 0x400
#define IFA_F_STABLE_PRIVACY 0x800
/* backwards compatibility for userspace */
#define IFA_RTA(r) ((FAR struct rtattr *)(((FAR char *)(r)) + \
NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg))
/****************************************************************************
* Public Type Definitions
****************************************************************************/
/* 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 */
int32_t ifa_index; /* Unique interface index */
};
/* Important comment:
* IFA_ADDRESS is prefix address, rather than local interface address.
* It makes no difference for normally configured broadcast interfaces,
* but for point-to-point IFA_ADDRESS is DESTINATION address,
* local address is supplied in IFA_LOCAL attribute.
*
* IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
* If present, the value from struct ifaddrmsg will be ignored.
*/
enum
{
IFA_UNSPEC,
IFA_ADDRESS,
IFA_LOCAL,
IFA_LABEL,
IFA_BROADCAST,
IFA_ANYCAST,
IFA_CACHEINFO,
IFA_MULTICAST,
IFA_FLAGS,
__IFA_MAX,
};
struct ifa_cacheinfo
{
uint32_t ifa_prefered;
uint32_t ifa_valid;
uint32_t cstamp; /* created timestamp, hundredths of seconds */
uint32_t tstamp; /* updated timestamp, hundredths of seconds */
};
#endif /* __INCLUDE_NETPACKET_IF_ADDR_H */

33
include/netpacket/netlink.h
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@@ -46,6 +46,8 @@
#include <sys/socket.h>
#include <stdint.h>
#include <netpacket/if_addr.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
@@ -291,21 +293,6 @@
#define RTM_BASE 16
#define RTM_MAX 67
/* Definitions for struct ifaddrmsg ****************************************/
#define IFA_RTA(r) ((FAR struct rtattr *) \
(((FAR char *)(r)) + \
NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg))
/* ifa_flags definitions: ifa_flags is a flag word of IFA_F_SECONDARY for
* secondary address (old alias interface), IFA_F_PERMANENT for a permanent
* address set by the user and other undocumented flags.
*/
#define IFA_F_SECONDARY 0x01
#define IFA_F_PERMANENT 0x80
/* Definitions for struct ifinfomsg *****************************************/
#define IFLA_RTA(r) ((FAR struct rtattr *) \
@@ -483,22 +470,6 @@ struct rtgenmsg
uint8_t rtgen_family;
};
/* 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 */
int32_t ifa_index; /* Unique interface index */
};
/* RTM_NEWNEIGH, RTM_DELNEIGH, RTM_GETNEIGH
* Add, remove or receive information about a neighbor table entry (e.g.,
* an ARP entry). The message contains an ndmsg structure.