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netfilter: conntrack: compute l3proto nla size at compile time

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avoids a pointer and allows struct to be const later on.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal
2017-08-12 00:57:02 +02:00
committed by Pablo Neira Ayuso
parent eee6ebbac1
commit 0d03510038
5 changed files with 28 additions and 30 deletions
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include/net/netfilter/nf_conntrack_l3proto.h
+8 -11
View File
@@ -20,6 +20,9 @@ struct nf_conntrack_l3proto {
/* L3 Protocol Family number. ex) PF_INET */
u_int16_t l3proto;
/* size of tuple nlattr, fills a hole */
u16 nla_size;
/* Protocol name */
const char *name;
@@ -49,24 +52,18 @@ struct nf_conntrack_l3proto {
int (*get_l4proto)(const struct sk_buff *skb, unsigned int nhoff,
unsigned int *dataoff, u_int8_t *protonum);
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
int (*tuple_to_nlattr)(struct sk_buff *skb,
const struct nf_conntrack_tuple *t);
int (*nlattr_to_tuple)(struct nlattr *tb[],
struct nf_conntrack_tuple *t);
const struct nla_policy *nla_policy;
#endif
/* Called when netns wants to use connection tracking */
int (*net_ns_get)(struct net *);
void (*net_ns_put)(struct net *);
/*
* Calculate size of tuple nlattr
*/
int (*nlattr_tuple_size)(void);
int (*nlattr_to_tuple)(struct nlattr *tb[],
struct nf_conntrack_tuple *t);
const struct nla_policy *nla_policy;
size_t nla_size;
/* Module (if any) which this is connected to. */
struct module *me;
};