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72 lines
1.9 KiB
72 lines
1.9 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef __LINUX_IF_ADDR_H |
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#define __LINUX_IF_ADDR_H |
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#include <linux/types.h> |
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#include <linux/netlink.h> |
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struct ifaddrmsg { |
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__u8 ifa_family; |
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__u8 ifa_prefixlen; /* The prefix length */ |
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__u8 ifa_flags; /* Flags */ |
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__u8 ifa_scope; /* Address scope */ |
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__u32 ifa_index; /* Link index */ |
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}; |
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/* |
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* Important comment: |
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* IFA_ADDRESS is prefix address, rather than local interface address. |
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* It makes no difference for normally configured broadcast interfaces, |
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* but for point-to-point IFA_ADDRESS is DESTINATION address, |
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* local address is supplied in IFA_LOCAL attribute. |
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* |
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* IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags. |
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* If present, the value from struct ifaddrmsg will be ignored. |
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*/ |
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enum { |
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IFA_UNSPEC, |
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IFA_ADDRESS, |
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IFA_LOCAL, |
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IFA_LABEL, |
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IFA_BROADCAST, |
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IFA_ANYCAST, |
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IFA_CACHEINFO, |
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IFA_MULTICAST, |
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IFA_FLAGS, |
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IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */ |
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IFA_TARGET_NETNSID, |
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__IFA_MAX, |
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}; |
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#define IFA_MAX (__IFA_MAX - 1) |
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/* ifa_flags */ |
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#define IFA_F_SECONDARY 0x01 |
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#define IFA_F_TEMPORARY IFA_F_SECONDARY |
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#define IFA_F_NODAD 0x02 |
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#define IFA_F_OPTIMISTIC 0x04 |
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#define IFA_F_DADFAILED 0x08 |
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#define IFA_F_HOMEADDRESS 0x10 |
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#define IFA_F_DEPRECATED 0x20 |
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#define IFA_F_TENTATIVE 0x40 |
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#define IFA_F_PERMANENT 0x80 |
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#define IFA_F_MANAGETEMPADDR 0x100 |
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#define IFA_F_NOPREFIXROUTE 0x200 |
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#define IFA_F_MCAUTOJOIN 0x400 |
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#define IFA_F_STABLE_PRIVACY 0x800 |
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struct ifa_cacheinfo { |
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__u32 ifa_prefered; |
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__u32 ifa_valid; |
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__u32 cstamp; /* created timestamp, hundredths of seconds */ |
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__u32 tstamp; /* updated timestamp, hundredths of seconds */ |
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}; |
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/* backwards compatibility for userspace */ |
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#ifndef __KERNEL__ |
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#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
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#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) |
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#endif |
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#endif
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