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| author |   wenxu <wenxu@ucloud.cn> | 2020-08-28 23:14:31 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-08-31 12:26:39 -0700 |
| commit | 1d97898b36bab91e8ffb38a660cc40eaba613f88 (patch) | |
| tree | 471d117e7c2acfe1bfd34521481501275248ceb8 | |
| parent | Merge branch 'gtp-minor-enhancements' (diff) | |
| download | linux-dev-1d97898b36bab91e8ffb38a660cc40eaba613f88.tar.xz linux-dev-1d97898b36bab91e8ffb38a660cc40eaba613f88.zip | |
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: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ipv6_stubs.h | 3 | ||||
| -rw-r--r-- | net/ipv6/addrconf_core.c | 8 | ||||
| -rw-r--r-- | net/ipv6/af_inet6.c | 1 |
3 files changed, 12 insertions, 0 deletions
diff --git a/include/net/ipv6_stubs.h b/include/net/ipv6_stubs.h index d7a7f7c81e7b..8fce558b5fea 100644 --- a/include/net/ipv6_stubs.h +++ b/include/net/ipv6_stubs.h @@ -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; diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c index 9ebf3fe0d2b1..c70c192bc91b 100644 --- a/net/ipv6/addrconf_core.c +++ b/net/ipv6/addrconf_core.c @@ -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); diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index d9a14935f402..e648fbebb167 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -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 = { |