From bdf53c58490bb52e17636eca8ad18d2c38ec3cb8 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 2 Mar 2015 00:13:22 -0600 Subject: [PATCH] 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" Signed-off-by: David S. Miller --- 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, -- 2.30.2