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netfilter: nat: remove l4proto->nlattr_to_range

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all protocols did set this to nf_nat_l4proto_nlattr_to_range, so
just call it directly.

The important difference is that we'll now also call it for
protocols that we don't support (i.e., nf_nat_proto_unknown did
not provide .nlattr_to_range).

However, there should be no harm, even icmp provided this callback.
If we don't implement a specific l4nat for this, nothing would make
use of this information, so adding a big switch/case construct listing
all supported l4protocols seems a bit pointless.

This change leaves a single function pointer in the l4proto struct.

Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
This commit is contained in:
Florian Westphal 2018-12-13 16:01:32 +01:00 • committed by Pablo Neira Ayuso
commit 76b90019e0
11 changed files with 17 additions and 73 deletions
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3
net/ipv4/netfilter/nf_nat_proto_gre.c
View file

@ -80,9 +80,6 @@ gre_manip_pkt(struct sk_buff *skb,
static const struct nf_nat_l4proto gre = {
.l4proto = IPPROTO_GRE,
.manip_pkt = gre_manip_pkt,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.nlattr_to_range = nf_nat_l4proto_nlattr_to_range,
#endif
};
static int __init nf_nat_proto_gre_init(void)

3
net/ipv4/netfilter/nf_nat_proto_icmp.c
View file

@ -39,7 +39,4 @@ icmp_manip_pkt(struct sk_buff *skb,
const struct nf_nat_l4proto nf_nat_l4proto_icmp = {
.l4proto = IPPROTO_ICMP,
.manip_pkt = icmp_manip_pkt,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.nlattr_to_range = nf_nat_l4proto_nlattr_to_range,
#endif
};