diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2006-01-05 20:19:05 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-01-05 20:19:05 (GMT) |
| commit | c1d10adb4a521de5760112853f42aaeefcec96eb (patch) | |
| tree | c7ba283aa0b9016c8403fa6589b7b3418f71acda /net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | |
| parent | 205d67c7d942c057648148fefb17e46f77e3efd6 (diff) | |
| download | linux-fsl-qoriq-c1d10adb4a521de5760112853f42aaeefcec96eb.tar.xz | |
[NETFILTER]: Add ctnetlink port for nf_conntrack
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c')
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 8202c1c..385867e 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -392,6 +392,48 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) return -ENOENT; } +#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 ipv4_tuple_to_nfattr(struct sk_buff *skb, + const struct nf_conntrack_tuple *tuple) +{ + NFA_PUT(skb, CTA_IP_V4_SRC, sizeof(u_int32_t), + &tuple->src.u3.ip); + NFA_PUT(skb, CTA_IP_V4_DST, sizeof(u_int32_t), + &tuple->dst.u3.ip); + return 0; + +nfattr_failure: + return -1; +} + +static const size_t cta_min_ip[CTA_IP_MAX] = { + [CTA_IP_V4_SRC-1] = sizeof(u_int32_t), + [CTA_IP_V4_DST-1] = sizeof(u_int32_t), +}; + +static int ipv4_nfattr_to_tuple(struct nfattr *tb[], + struct nf_conntrack_tuple *t) +{ + if (!tb[CTA_IP_V4_SRC-1] || !tb[CTA_IP_V4_DST-1]) + return -EINVAL; + + if (nfattr_bad_size(tb, CTA_IP_MAX, cta_min_ip)) + return -EINVAL; + + t->src.u3.ip = + *(u_int32_t *)NFA_DATA(tb[CTA_IP_V4_SRC-1]); + t->dst.u3.ip = + *(u_int32_t *)NFA_DATA(tb[CTA_IP_V4_DST-1]); + + return 0; +} +#endif + static struct nf_sockopt_ops so_getorigdst = { .pf = PF_INET, .get_optmin = SO_ORIGINAL_DST, @@ -408,6 +450,11 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 = { .print_conntrack = ipv4_print_conntrack, .prepare = ipv4_prepare, .get_features = ipv4_get_features, +#if defined(CONFIG_NF_CT_NETLINK) || \ + defined(CONFIG_NF_CT_NETLINK_MODULE) + .tuple_to_nfattr = ipv4_tuple_to_nfattr, + .nfattr_to_tuple = ipv4_nfattr_to_tuple, +#endif .me = THIS_MODULE, }; |