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Date: Mon, 02 Mar 2015 00:13:22 -0600
From: ebiederm@...ssion.com (Eric W. Biederman)
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Ralf Baechle <ralf@...ux-mips.org>,
linux-hams@...r.kernel.org
Subject: [PATCH net-next 14/15] neigh: Don't require dst in neigh_hh_init
- Add protocol to neigh_tbl so that dst->ops->protocol is not needed
- Acquire the device from neigh->dev
This results in a neigh_hh_init that will cache the samve values
regardless of the packets flowing through it.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
include/net/neighbour.h | 1 +
net/core/neighbour.c | 8 ++++----
net/decnet/dn_neigh.c | 1 +
net/ipv4/arp.c | 1 +
net/ipv6/ndisc.c | 1 +
5 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index bc66babb5f27..9f912e4d4232 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -193,6 +193,7 @@ struct neigh_table {
int family;
int entry_size;
int key_len;
+ __be16 protocol;
__u32 (*hash)(const void *pkey,
const struct net_device *dev,
__u32 *hash_rnd);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 8a319ff3e8d1..af72b863e968 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1263,10 +1263,10 @@ struct neighbour *neigh_event_ns(struct neigh_table *tbl,
EXPORT_SYMBOL(neigh_event_ns);
/* called with read_lock_bh(&n->lock); */
-static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst)
+static void neigh_hh_init(struct neighbour *n)
{
- struct net_device *dev = dst->dev;
- __be16 prot = dst->ops->protocol;
+ struct net_device *dev = n->dev;
+ __be16 prot = n->tbl->protocol;
struct hh_cache *hh = &n->hh;
write_lock_bh(&n->lock);
@@ -1296,7 +1296,7 @@ int neigh_resolve_output(struct neighbour *neigh, struct sk_buff *skb)
unsigned int seq;
if (dev->header_ops->cache && !neigh->hh.hh_len)
- neigh_hh_init(neigh, dst);
+ neigh_hh_init(neigh);
do {
__skb_pull(skb, skb_network_offset(skb));
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 7ca7c3143da3..f123c6c6748c 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -97,6 +97,7 @@ struct neigh_table dn_neigh_table = {
.family = PF_DECnet,
.entry_size = NEIGH_ENTRY_SIZE(sizeof(struct dn_neigh)),
.key_len = sizeof(__le16),
+ .protocol = cpu_to_be16(ETH_P_DNA_RT),
.hash = dn_neigh_hash,
.constructor = dn_neigh_construct,
.id = "dn_neigh_cache",
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index bca5b9d9b442..6b8aad6a0d7d 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -152,6 +152,7 @@ static const struct neigh_ops arp_direct_ops = {
struct neigh_table arp_tbl = {
.family = AF_INET,
.key_len = 4,
+ .protocol = cpu_to_be16(ETH_P_IP),
.hash = arp_hash,
.constructor = arp_constructor,
.proxy_redo = parp_redo,
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 471ed24aabae..e363bbc2420d 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -117,6 +117,7 @@ static const struct neigh_ops ndisc_direct_ops = {
struct neigh_table nd_tbl = {
.family = AF_INET6,
.key_len = sizeof(struct in6_addr),
+ .protocol = cpu_to_be16(ETH_P_IPV6),
.hash = ndisc_hash,
.constructor = ndisc_constructor,
.pconstructor = pndisc_constructor,
--
2.2.1
--
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