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Message-Id: <20180717120651.15748-12-dsahern@kernel.org>
Date: Tue, 17 Jul 2018 05:06:45 -0700
From: dsahern@...nel.org
To: netdev@...r.kernel.org
Cc: nikita.leshchenko@...cle.com, roopa@...ulusnetworks.com,
stephen@...workplumber.org, idosch@...lanox.com, jiri@...lanox.com,
saeedm@...lanox.com, alex.aring@...il.com,
linux-wpan@...r.kernel.org, netfilter-devel@...r.kernel.org,
linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>
Subject: [PATCH RFC/RFT net-next 11/17] net: Change neigh_table_init and neigh_table_clear signature
From: David Ahern <dsahern@...il.com>
Convert neigh_table_init and neigh_table_clear to use an address family
instead of the NEIGH_*_TABLE macros which are effectively the same thing
only setup as index into neigh_tables. The functions can do that mapping
internally.
Further, add net to the arg list for both and remove the dependence on
init_net.
Signed-off-by: David Ahern <dsahern@...il.com>
---
include/net/neighbour.h | 4 ++--
net/core/neighbour.c | 40 ++++++++++++++++++++++++++++++++--------
net/decnet/dn_neigh.c | 4 ++--
net/ipv4/arp.c | 2 +-
net/ipv6/ndisc.c | 4 ++--
5 files changed, 39 insertions(+), 15 deletions(-)
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 6cf9ce16eac8..b70afea05f86 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -304,8 +304,8 @@ static inline struct neighbour *__neigh_lookup_noref(struct neigh_table *tbl,
return ___neigh_lookup_noref(tbl, tbl->key_eq, tbl->hash, pkey, dev);
}
-void neigh_table_init(int index, struct neigh_table *tbl);
-int neigh_table_clear(int index, struct neigh_table *tbl);
+void neigh_table_init(struct net *net, struct neigh_table *tbl);
+int neigh_table_clear(struct net *net, struct neigh_table *tbl);
struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey,
struct net_device *dev);
struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 41841d8e4ea4..8bdaeb080ce4 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1548,14 +1548,15 @@ static struct lock_class_key neigh_table_proxy_queue_class;
static struct neigh_table *neigh_tables[NEIGH_NR_TABLES] __read_mostly;
-void neigh_table_init(int index, struct neigh_table *tbl)
+void neigh_table_init(struct net *net, struct neigh_table *tbl)
{
unsigned long now = jiffies;
+ u8 family = tbl->family;
unsigned long phsize;
INIT_LIST_HEAD(&tbl->parms_list);
list_add(&tbl->parms.list, &tbl->parms_list);
- write_pnet(&tbl->parms.net, &init_net);
+ write_pnet(&tbl->parms.net, net);
refcount_set(&tbl->parms.refcnt, 1);
tbl->parms.reachable_time =
neigh_rand_reach_time(NEIGH_VAR(&tbl->parms, BASE_REACHABLE_TIME));
@@ -1565,8 +1566,8 @@ void neigh_table_init(int index, struct neigh_table *tbl)
panic("cannot create neighbour cache statistics");
#ifdef CONFIG_PROC_FS
- if (!proc_create_seq_data(tbl->id, 0, init_net.proc_net_stat,
- &neigh_stat_seq_ops, tbl))
+ if (!proc_create_seq_data(tbl->id, 0, net->proc_net_stat,
+ &neigh_stat_seq_ops, tbl))
panic("cannot create neighbour proc dir entry");
#endif
@@ -1595,13 +1596,36 @@ void neigh_table_init(int index, struct neigh_table *tbl)
tbl->last_flush = now;
tbl->last_rand = now + tbl->parms.reachable_time * 20;
- neigh_tables[index] = tbl;
+ switch (family) {
+ case AF_INET:
+ neigh_tables[NEIGH_ARP_TABLE] = tbl;
+ break;
+ case AF_INET6:
+ neigh_tables[NEIGH_ND_TABLE] = tbl;
+ break;
+ case AF_DECnet:
+ neigh_tables[NEIGH_DN_TABLE] = tbl;
+ break;
+ }
}
EXPORT_SYMBOL(neigh_table_init);
-int neigh_table_clear(int index, struct neigh_table *tbl)
+int neigh_table_clear(struct net *net, struct neigh_table *tbl)
{
- neigh_tables[index] = NULL;
+ u8 family = tbl->family;
+
+ switch (family) {
+ case AF_INET:
+ neigh_tables[NEIGH_ARP_TABLE] = NULL;
+ break;
+ case AF_INET6:
+ neigh_tables[NEIGH_ND_TABLE] = NULL;
+ break;
+ case AF_DECnet:
+ neigh_tables[NEIGH_DN_TABLE] = NULL;
+ break;
+ }
+
/* It is not clean... Fix it to unload IPv6 module safely */
cancel_delayed_work_sync(&tbl->gc_work);
del_timer_sync(&tbl->proxy_timer);
@@ -1617,7 +1641,7 @@ int neigh_table_clear(int index, struct neigh_table *tbl)
kfree(tbl->phash_buckets);
tbl->phash_buckets = NULL;
- remove_proc_entry(tbl->id, init_net.proc_net_stat);
+ remove_proc_entry(tbl->id, net->proc_net_stat);
free_percpu(tbl->stats);
tbl->stats = NULL;
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 74112777beb0..6d5078ddffac 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -593,7 +593,7 @@ static const struct seq_operations dn_neigh_seq_ops = {
void __init dn_neigh_init(void)
{
- neigh_table_init(NEIGH_DN_TABLE, &dn_neigh_table);
+ neigh_table_init(&init_net, &dn_neigh_table);
proc_create_net("decnet_neigh", 0444, init_net.proc_net,
&dn_neigh_seq_ops, sizeof(struct neigh_seq_state));
}
@@ -601,5 +601,5 @@ void __init dn_neigh_init(void)
void __exit dn_neigh_cleanup(void)
{
remove_proc_entry("decnet_neigh", init_net.proc_net);
- neigh_table_clear(NEIGH_DN_TABLE, &dn_neigh_table);
+ neigh_table_clear(&init_net, &dn_neigh_table);
}
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 7b27faefa01b..707b40f76852 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1291,7 +1291,7 @@ static int arp_proc_init(void);
void __init arp_init(void)
{
- neigh_table_init(NEIGH_ARP_TABLE, &arp_tbl);
+ neigh_table_init(&init_net, &arp_tbl);
dev_add_pack(&arp_packet_type);
arp_proc_init();
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 5103d8641b04..6105530fe865 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1908,7 +1908,7 @@ int __init ndisc_init(void)
/*
* Initialize the neighbour table
*/
- neigh_table_init(NEIGH_ND_TABLE, &nd_tbl);
+ neigh_table_init(&init_net, &nd_tbl);
#ifdef CONFIG_SYSCTL
err = neigh_sysctl_register(NULL, &nd_tbl.parms,
@@ -1941,6 +1941,6 @@ void ndisc_cleanup(void)
#ifdef CONFIG_SYSCTL
neigh_sysctl_unregister(&nd_tbl.parms);
#endif
- neigh_table_clear(NEIGH_ND_TABLE, &nd_tbl);
+ neigh_table_clear(&init_net, &nd_tbl);
unregister_pernet_subsys(&ndisc_net_ops);
}
--
2.11.0
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