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| author | David S. Miller <davem@davemloft.net> | 2012-06-19 18:56:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-19 18:56:21 -0700 |
| commit | f9242b6b28d61295f2bf7e8adfb1060b382e5381 (patch) | |
| tree | b395670bd6ae832e9f6f87f47a1840baf3a06d0d /net/ipv6/icmp.c | |
| parent | 677a3d60fb3153f786a0d28fcf0287670e7bd3c2 (diff) | |
| download | lwn-f9242b6b28d61295f2bf7e8adfb1060b382e5381.tar.gz lwn-f9242b6b28d61295f2bf7e8adfb1060b382e5381.zip | |
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/icmp.c')
| -rw-r--r-- | net/ipv6/icmp.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 5247d5c211f9..c7da1422cbde 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -600,9 +600,8 @@ static void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info) { const struct inet6_protocol *ipprot; int inner_offset; - int hash; - u8 nexthdr; __be16 frag_off; + u8 nexthdr; if (!pskb_may_pull(skb, sizeof(struct ipv6hdr))) return; @@ -629,10 +628,8 @@ static void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info) --ANK (980726) */ - hash = nexthdr & (MAX_INET_PROTOS - 1); - rcu_read_lock(); - ipprot = rcu_dereference(inet6_protos[hash]); + ipprot = rcu_dereference(inet6_protos[nexthdr]); if (ipprot && ipprot->err_handler) ipprot->err_handler(skb, NULL, type, code, inner_offset, info); rcu_read_unlock(); |