Messages in this thread |  | | | Date | Thu, 16 Sep 2010 08:18:38 +0200 | | From | Patrick McHardy <> | | Subject | Re: [PATCH v5 2/2] netfilter: save the hash of the tuple in the original direction for latter use |
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On 21.08.2010 00:49, Changli Gao wrote: > Since we don't change the tuple in the original direction, we can save it > in ct->tuplehash[IP_CT_DIR_REPLY].hnode.pprev for __nf_conntrack_confirm() > use.
I like this idea. We could actually do the same for the reply tuple and invalidate the saved hash in case the reply tuple is changed (nf_conntrack_alter_reply()), which only happens when NAT is used.
> __hash_conntrack() is split into two steps: ____hash_conntrack() is used > to get the raw hash, and __hash_bucket() is used to get the bucket id.
This patch uses underscores a bit excessively, how about renaming:
- ____hash_conntrack() => hash_conntrack_raw() - __hash variables => hash - hash variables => bucket > @@ -408,7 +438,8 @@ __nf_conntrack_confirm(struct sk_buff *skb) > return NF_ACCEPT; > > zone = nf_ct_zone(ct); > - hash = hash_conntrack(net, zone, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple); > + /* reuse the __hash saved before */ > + hash = hash_bucket(*(unsigned long *)&ct->tuplehash[IP_CT_DIR_REPLY].hnnode.pprev, net);
Please try to stay at least close to the 80 characters limit.
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