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Revert "Exempt multicast addresses from five-second neighbor lifetime"

Browse source 
This reverts commit e5fe052c06 as it
breaks some ABIs that people are relying on.

The need for this in an android device seems low at this point in time.
If it is deemed that this is needed, this patch can be revisited and
added back in a different way to not touch the abi.

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I019a290c6d7d54d50a143a93063bcd88d80d6c98
This commit is contained in:
Greg Kroah-Hartman 2020-11-25 17:37:41 +01:00
commit 4e398dccc0
4 changed files with 0 additions and 16 deletions
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1
include/net/neighbour.h
View file

@ -204,7 +204,6 @@ struct neigh_table {
int (*pconstructor)(struct pneigh_entry *);
void (*pdestructor)(struct pneigh_entry *);
void (*proxy_redo)(struct sk_buff *skb);
int (*is_multicast)(const void *pkey);
bool (*allow_add)(const struct net_device *dev,
struct netlink_ext_ack *extack);
char *id;

2
net/core/neighbour.c
View file

@ -235,8 +235,6 @@ static int neigh_forced_gc(struct neigh_table *tbl)
write_lock(&n->lock);
if ((n->nud_state == NUD_FAILED) ||
(tbl->is_multicast &&
tbl->is_multicast(n->primary_key)) ||
time_after(tref, n->updated))
remove = true;
write_unlock(&n->lock);

6
net/ipv4/arp.c
View file

@ -125,7 +125,6 @@ static int arp_constructor(struct neighbour *neigh);
static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb);
static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb);
static void parp_redo(struct sk_buff *skb);
static int arp_is_multicast(const void *pkey);
static const struct neigh_ops arp_generic_ops = {
.family = AF_INET,
@ -157,7 +156,6 @@ struct neigh_table arp_tbl = {
.key_eq = arp_key_eq,
.constructor = arp_constructor,
.proxy_redo = parp_redo,
.is_multicast = arp_is_multicast,
.id = "arp_cache",
.parms = {
.tbl = &arp_tbl,
@ -930,10 +928,6 @@ static void parp_redo(struct sk_buff *skb)
arp_process(dev_net(skb->dev), NULL, skb);
}
static int arp_is_multicast(const void *pkey)
{
return ipv4_is_multicast(*((__be32 *)pkey));
}
/*
* Receive an arp request from the device layer.

7
net/ipv6/ndisc.c
View file

@ -81,7 +81,6 @@ static void ndisc_error_report(struct neighbour *neigh, struct sk_buff *skb);
static int pndisc_constructor(struct pneigh_entry *n);
static void pndisc_destructor(struct pneigh_entry *n);
static void pndisc_redo(struct sk_buff *skb);
static int ndisc_is_multicast(const void *pkey);
static const struct neigh_ops ndisc_generic_ops = {
.family = AF_INET6,
@ -116,7 +115,6 @@ struct neigh_table nd_tbl = {
.pconstructor = pndisc_constructor,
.pdestructor = pndisc_destructor,
.proxy_redo = pndisc_redo,
.is_multicast = ndisc_is_multicast,
.allow_add = ndisc_allow_add,
.id = "ndisc_cache",
.parms = {
@ -1708,11 +1706,6 @@ static void pndisc_redo(struct sk_buff *skb)
kfree_skb(skb);
}
static int ndisc_is_multicast(const void *pkey)
{
return ipv6_addr_is_multicast((struct in6_addr *)pkey);
}
static bool ndisc_suppress_frag_ndisc(struct sk_buff *skb)
{
struct inet6_dev *idev = __in6_dev_get(skb->dev);