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authorJesper Dangaard Brouer <brouer@redhat.com>2014-03-03 14:44:54 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2014-03-07 11:40:04 +0100
commitb476b72a0f8514a5a4c561bab731ddd506a284e7 (patch)
tree52c16033b0e96c8b2459bb023203acb6cb6845c2 /include/net
parent52af2bfcc0f1de4d2bf7a292127f9731f08c2c8e (diff)
downloadop-kernel-dev-b476b72a0f8514a5a4c561bab731ddd506a284e7.zip
op-kernel-dev-b476b72a0f8514a5a4c561bab731ddd506a284e7.tar.gz
netfilter: trivial code cleanup and doc changes
Changes while reading through the netfilter code. Added hint about how conntrack nf_conn refcnt is accessed. And renamed repl_hash to reply_hash for readability Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Reviewed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_conntrack.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index b2ac624..e10d1fa 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -73,7 +73,13 @@ struct nf_conn_help {
struct nf_conn {
/* Usage count in here is 1 for hash table/destruct timer, 1 per skb,
- plus 1 for any connection(s) we are `master' for */
+ * plus 1 for any connection(s) we are `master' for
+ *
+ * Hint, SKB address this struct and refcnt via skb->nfct and
+ * helpers nf_conntrack_get() and nf_conntrack_put().
+ * Helper nf_ct_put() equals nf_conntrack_put() by dec refcnt,
+ * beware nf_ct_get() is different and don't inc refcnt.
+ */
struct nf_conntrack ct_general;
spinlock_t lock;
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