diff options
Diffstat (limited to 'net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c')
-rw-r--r-- | net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index 753a3ae8502b..704fbbe74874 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -401,6 +401,48 @@ static ctl_table nf_ct_net_table[] = { }; #endif +#if defined(CONFIG_NF_CT_NETLINK) || \ + defined(CONFIG_NF_CT_NETLINK_MODULE) + +#include <linux/netfilter/nfnetlink.h> +#include <linux/netfilter/nfnetlink_conntrack.h> + +static int ipv6_tuple_to_nfattr(struct sk_buff *skb, + const struct nf_conntrack_tuple *tuple) +{ + NFA_PUT(skb, CTA_IP_V6_SRC, sizeof(u_int32_t) * 4, + &tuple->src.u3.ip6); + NFA_PUT(skb, CTA_IP_V6_DST, sizeof(u_int32_t) * 4, + &tuple->dst.u3.ip6); + return 0; + +nfattr_failure: + return -1; +} + +static const size_t cta_min_ip[CTA_IP_MAX] = { + [CTA_IP_V6_SRC-1] = sizeof(u_int32_t)*4, + [CTA_IP_V6_DST-1] = sizeof(u_int32_t)*4, +}; + +static int ipv6_nfattr_to_tuple(struct nfattr *tb[], + struct nf_conntrack_tuple *t) +{ + if (!tb[CTA_IP_V6_SRC-1] || !tb[CTA_IP_V6_DST-1]) + return -EINVAL; + + if (nfattr_bad_size(tb, CTA_IP_MAX, cta_min_ip)) + return -EINVAL; + + memcpy(&t->src.u3.ip6, NFA_DATA(tb[CTA_IP_V6_SRC-1]), + sizeof(u_int32_t) * 4); + memcpy(&t->dst.u3.ip6, NFA_DATA(tb[CTA_IP_V6_DST-1]), + sizeof(u_int32_t) * 4); + + return 0; +} +#endif + struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 = { .l3proto = PF_INET6, .name = "ipv6", @@ -409,6 +451,11 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 = { .print_tuple = ipv6_print_tuple, .print_conntrack = ipv6_print_conntrack, .prepare = ipv6_prepare, +#if defined(CONFIG_NF_CT_NETLINK) || \ + defined(CONFIG_NF_CT_NETLINK_MODULE) + .tuple_to_nfattr = ipv6_tuple_to_nfattr, + .nfattr_to_tuple = ipv6_nfattr_to_tuple, +#endif .get_features = ipv6_get_features, .me = THIS_MODULE, }; |