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| author | Florian Westphal <fw@strlen.de> | 2022-09-06 17:20:35 +0200 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2022-09-07 16:46:04 +0200 |
| commit | c92c27171040554cfda7a3fc925e9dbcb5b4a698 (patch) | |
| tree | 59d7fc3e6dbecbee86cb99add3454a1f999f5047 /include/net/netfilter | |
| parent | 8556bceb9c409946eebd2303d2f19e87844195ae (diff) | |
| download | lwn-c92c27171040554cfda7a3fc925e9dbcb5b4a698.tar.gz lwn-c92c27171040554cfda7a3fc925e9dbcb5b4a698.zip | |
netfilter: nat: move repetitive nat port reserve loop to a helper
Almost all nat helpers reserve an expecation port the same way:
Try the port inidcated by the peer, then move to next port if that
port is already in use.
We can squash this into a helper.
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'include/net/netfilter')
| -rw-r--r-- | include/net/netfilter/nf_nat_helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_nat_helper.h b/include/net/netfilter/nf_nat_helper.h index efae84646353..44c421b9be85 100644 --- a/include/net/netfilter/nf_nat_helper.h +++ b/include/net/netfilter/nf_nat_helper.h @@ -38,4 +38,5 @@ bool nf_nat_mangle_udp_packet(struct sk_buff *skb, struct nf_conn *ct, * to port ct->master->saved_proto. */ void nf_nat_follow_master(struct nf_conn *ct, struct nf_conntrack_expect *this); +u16 nf_nat_exp_find_port(struct nf_conntrack_expect *exp, u16 port); #endif |