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authorDavid S. Miller <davem@davemloft.net>2012-06-19 18:56:21 -0700
committerDavid S. Miller <davem@davemloft.net>2012-06-19 18:56:21 -0700
commitf9242b6b28d61295f2bf7e8adfb1060b382e5381 (patch)
treeb395670bd6ae832e9f6f87f47a1840baf3a06d0d /net/ipv6/ip6_input.c
parent677a3d60fb3153f786a0d28fcf0287670e7bd3c2 (diff)
downloadlinux-stericsson-f9242b6b28d61295f2bf7e8adfb1060b382e5381.tar.gz
inet: Sanitize inet{,6} protocol demux.
Don't pretend that inet_protos[] and inet6_protos[] are hashes, thay are just a straight arrays. Remove all unnecessary hash masking. Document MAX_INET_PROTOS. Use RAW_HTABLE_SIZE when appropriate. Reported-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_input.c')
-rw-r--r--net/ipv6/ip6_input.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 21a15dfe4a9e..5ab923e51af3 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -168,13 +168,12 @@ drop:
static int ip6_input_finish(struct sk_buff *skb)
{
+ struct net *net = dev_net(skb_dst(skb)->dev);
const struct inet6_protocol *ipprot;
+ struct inet6_dev *idev;
unsigned int nhoff;
int nexthdr;
bool raw;
- u8 hash;
- struct inet6_dev *idev;
- struct net *net = dev_net(skb_dst(skb)->dev);
/*
* Parse extension headers
@@ -189,9 +188,7 @@ resubmit:
nexthdr = skb_network_header(skb)[nhoff];
raw = raw6_local_deliver(skb, nexthdr);
-
- hash = nexthdr & (MAX_INET_PROTOS - 1);
- if ((ipprot = rcu_dereference(inet6_protos[hash])) != NULL) {
+ if ((ipprot = rcu_dereference(inet6_protos[nexthdr])) != NULL) {
int ret;
if (ipprot->flags & INET6_PROTO_FINAL) {