8da86466b8
We send unicast neighbor (ARP or NDP) solicitations ucast_probes times in PROBE state. Zhu Yanjun reported that some implementation does not reply against them and the entry will become FAILED, which is undesirable. We had been dealt with such nodes by sending multicast probes mcast_ solicit times after unicast probes in PROBE state. In 2003, I made a change not to send them to improve compatibility with IPv6 NDP. Let's introduce per-protocol per-interface sysctl knob "mcast_ reprobe" to configure the number of multicast (re)solicitation for reconfirmation in PROBE state. The default is 0, since we have been doing so for 10+ years. Reported-by: Zhu Yanjun <Yanjun.Zhu@windriver.com> CC: Ulf Samuelsson <ulf.samuelsson@ericsson.com> Signed-off-by: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
167 lines
4.1 KiB
C
167 lines
4.1 KiB
C
#ifndef __LINUX_NEIGHBOUR_H
|
|
#define __LINUX_NEIGHBOUR_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/netlink.h>
|
|
|
|
struct ndmsg {
|
|
__u8 ndm_family;
|
|
__u8 ndm_pad1;
|
|
__u16 ndm_pad2;
|
|
__s32 ndm_ifindex;
|
|
__u16 ndm_state;
|
|
__u8 ndm_flags;
|
|
__u8 ndm_type;
|
|
};
|
|
|
|
enum {
|
|
NDA_UNSPEC,
|
|
NDA_DST,
|
|
NDA_LLADDR,
|
|
NDA_CACHEINFO,
|
|
NDA_PROBES,
|
|
NDA_VLAN,
|
|
NDA_PORT,
|
|
NDA_VNI,
|
|
NDA_IFINDEX,
|
|
NDA_MASTER,
|
|
NDA_LINK_NETNSID,
|
|
__NDA_MAX
|
|
};
|
|
|
|
#define NDA_MAX (__NDA_MAX - 1)
|
|
|
|
/*
|
|
* Neighbor Cache Entry Flags
|
|
*/
|
|
|
|
#define NTF_USE 0x01
|
|
#define NTF_SELF 0x02
|
|
#define NTF_MASTER 0x04
|
|
#define NTF_PROXY 0x08 /* == ATF_PUBL */
|
|
#define NTF_EXT_LEARNED 0x10
|
|
#define NTF_ROUTER 0x80
|
|
|
|
/*
|
|
* Neighbor Cache Entry States.
|
|
*/
|
|
|
|
#define NUD_INCOMPLETE 0x01
|
|
#define NUD_REACHABLE 0x02
|
|
#define NUD_STALE 0x04
|
|
#define NUD_DELAY 0x08
|
|
#define NUD_PROBE 0x10
|
|
#define NUD_FAILED 0x20
|
|
|
|
/* Dummy states */
|
|
#define NUD_NOARP 0x40
|
|
#define NUD_PERMANENT 0x80
|
|
#define NUD_NONE 0x00
|
|
|
|
/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
|
|
and make no address resolution or NUD.
|
|
NUD_PERMANENT also cannot be deleted by garbage collectors.
|
|
*/
|
|
|
|
struct nda_cacheinfo {
|
|
__u32 ndm_confirmed;
|
|
__u32 ndm_used;
|
|
__u32 ndm_updated;
|
|
__u32 ndm_refcnt;
|
|
};
|
|
|
|
/*****************************************************************
|
|
* Neighbour tables specific messages.
|
|
*
|
|
* To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
|
|
* NLM_F_DUMP flag set. Every neighbour table configuration is
|
|
* spread over multiple messages to avoid running into message
|
|
* size limits on systems with many interfaces. The first message
|
|
* in the sequence transports all not device specific data such as
|
|
* statistics, configuration, and the default parameter set.
|
|
* This message is followed by 0..n messages carrying device
|
|
* specific parameter sets.
|
|
* Although the ordering should be sufficient, NDTA_NAME can be
|
|
* used to identify sequences. The initial message can be identified
|
|
* by checking for NDTA_CONFIG. The device specific messages do
|
|
* not contain this TLV but have NDTPA_IFINDEX set to the
|
|
* corresponding interface index.
|
|
*
|
|
* To change neighbour table attributes, send RTM_SETNEIGHTBL
|
|
* with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
|
|
* NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
|
|
* otherwise. Device specific parameter sets can be changed by
|
|
* setting NDTPA_IFINDEX to the interface index of the corresponding
|
|
* device.
|
|
****/
|
|
|
|
struct ndt_stats {
|
|
__u64 ndts_allocs;
|
|
__u64 ndts_destroys;
|
|
__u64 ndts_hash_grows;
|
|
__u64 ndts_res_failed;
|
|
__u64 ndts_lookups;
|
|
__u64 ndts_hits;
|
|
__u64 ndts_rcv_probes_mcast;
|
|
__u64 ndts_rcv_probes_ucast;
|
|
__u64 ndts_periodic_gc_runs;
|
|
__u64 ndts_forced_gc_runs;
|
|
};
|
|
|
|
enum {
|
|
NDTPA_UNSPEC,
|
|
NDTPA_IFINDEX, /* u32, unchangeable */
|
|
NDTPA_REFCNT, /* u32, read-only */
|
|
NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
|
|
NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
|
|
NDTPA_RETRANS_TIME, /* u64, msecs */
|
|
NDTPA_GC_STALETIME, /* u64, msecs */
|
|
NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
|
|
NDTPA_QUEUE_LEN, /* u32 */
|
|
NDTPA_APP_PROBES, /* u32 */
|
|
NDTPA_UCAST_PROBES, /* u32 */
|
|
NDTPA_MCAST_PROBES, /* u32 */
|
|
NDTPA_ANYCAST_DELAY, /* u64, msecs */
|
|
NDTPA_PROXY_DELAY, /* u64, msecs */
|
|
NDTPA_PROXY_QLEN, /* u32 */
|
|
NDTPA_LOCKTIME, /* u64, msecs */
|
|
NDTPA_QUEUE_LENBYTES, /* u32 */
|
|
NDTPA_MCAST_REPROBES, /* u32 */
|
|
__NDTPA_MAX
|
|
};
|
|
#define NDTPA_MAX (__NDTPA_MAX - 1)
|
|
|
|
struct ndtmsg {
|
|
__u8 ndtm_family;
|
|
__u8 ndtm_pad1;
|
|
__u16 ndtm_pad2;
|
|
};
|
|
|
|
struct ndt_config {
|
|
__u16 ndtc_key_len;
|
|
__u16 ndtc_entry_size;
|
|
__u32 ndtc_entries;
|
|
__u32 ndtc_last_flush; /* delta to now in msecs */
|
|
__u32 ndtc_last_rand; /* delta to now in msecs */
|
|
__u32 ndtc_hash_rnd;
|
|
__u32 ndtc_hash_mask;
|
|
__u32 ndtc_hash_chain_gc;
|
|
__u32 ndtc_proxy_qlen;
|
|
};
|
|
|
|
enum {
|
|
NDTA_UNSPEC,
|
|
NDTA_NAME, /* char *, unchangeable */
|
|
NDTA_THRESH1, /* u32 */
|
|
NDTA_THRESH2, /* u32 */
|
|
NDTA_THRESH3, /* u32 */
|
|
NDTA_CONFIG, /* struct ndt_config, read-only */
|
|
NDTA_PARMS, /* nested TLV NDTPA_* */
|
|
NDTA_STATS, /* struct ndt_stats, read-only */
|
|
NDTA_GC_INTERVAL, /* u64, msecs */
|
|
__NDTA_MAX
|
|
};
|
|
#define NDTA_MAX (__NDTA_MAX - 1)
|
|
|
|
#endif
|