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netfilter: move checksum_partial indirection to struct nf_ipv6_ops

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We cannot make a direct call to nf_ip6_checksum_partial() because that
would result in autoloading the 'ipv6' module because of symbol
dependencies.  Therefore, define checksum_partial indirection in
nf_ipv6_ops where this really belongs to.

For IPv4, we can indeed make a direct function call, which is faster,
given IPv4 is built-in in the networking code by default. Still,
CONFIG_INET=n and CONFIG_NETFILTER=y is possible, so define empty inline
stub for IPv4 in such case.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2017-12-20 16:04:18 +01:00
parent ef71fe27ec
commit f7dcbe2f36
7 changed files with 50 additions and 38 deletions
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8
net/bridge/netfilter/nf_tables_bridge.c
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@@ -106,13 +106,6 @@ static int nf_br_reroute(struct net *net, struct sk_buff *skb,
return 0;
}
static __sum16 nf_br_checksum_partial(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, unsigned int len,
u_int8_t protocol)
{
return 0;
}
static int nf_br_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict __always_unused)
{
@@ -121,7 +114,6 @@ static int nf_br_route(struct net *net, struct dst_entry **dst,
static const struct nf_afinfo nf_br_afinfo = {
.family = AF_BRIDGE,
.checksum_partial = nf_br_checksum_partial,
.route = nf_br_route,
.saveroute = nf_br_saveroute,
.reroute = nf_br_reroute,