Commit 1d97898b authored by wenxu's avatar wenxu Committed by David S. Miller
Browse files

ipv6: add ipv6_fragment hook in ipv6_stub 



Add ipv6_fragment to ipv6_stub to avoid calling netfilter when
access ip6_fragment.

Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 353ff8cc

include/net/ipv6_stubs.h

+3 −0
Original line number Diff line number Diff line
@@ -63,6 +63,9 @@ struct ipv6_stub { 
			       int encap_type);

#endif

	struct neigh_table *nd_tbl;



	int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,

			     int (*output)(struct net *, struct sock *, struct sk_buff *));

};

extern const struct ipv6_stub *ipv6_stub __read_mostly;

net/ipv6/addrconf_core.c

+8 −0
Original line number Diff line number Diff line
@@ -191,6 +191,13 @@ static int eafnosupport_ip6_del_rt(struct net *net, struct fib6_info *rt, 
	return -EAFNOSUPPORT;

}



static int eafnosupport_ipv6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,

				      int (*output)(struct net *, struct sock *, struct sk_buff *))

{

	kfree_skb(skb);

	return -EAFNOSUPPORT;

}



const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {

	.ipv6_dst_lookup_flow = eafnosupport_ipv6_dst_lookup_flow,

	.ipv6_route_input  = eafnosupport_ipv6_route_input,
@@ -201,6 +208,7 @@ const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) { 
	.ip6_mtu_from_fib6 = eafnosupport_ip6_mtu_from_fib6,

	.fib6_nh_init	   = eafnosupport_fib6_nh_init,

	.ip6_del_rt	   = eafnosupport_ip6_del_rt,

	.ipv6_fragment	   = eafnosupport_ipv6_fragment,

};

EXPORT_SYMBOL_GPL(ipv6_stub);

net/ipv6/af_inet6.c

+1 −0
Original line number Diff line number Diff line
@@ -1027,6 +1027,7 @@ static const struct ipv6_stub ipv6_stub_impl = { 
	.xfrm6_rcv_encap = xfrm6_rcv_encap,

#endif

	.nd_tbl	= &nd_tbl,

	.ipv6_fragment = ip6_fragment,

};



static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = {