diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2007-12-18 06:28:19 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 22:58:51 (GMT) |
| commit | 0f417ce989f84cfd5418e3b316064bfbb2708196 (patch) | |
| tree | 7462b82b0a14e0b4bc1e916f55b01999e56b1591 | |
| parent | 13eae15a244bb29beaa47bf86a24fd29ca7f8a4c (diff) | |
| download | linux-0f417ce989f84cfd5418e3b316064bfbb2708196.tar.xz | |
[NETFILTER]: ctnetlink: add support for master tuple event notification and dumping
This patch adds support for master tuple event notification and
dumping. Conntrackd needs this information to recover related
connections appropriately.
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>
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index d7da167..94027c8 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -254,6 +254,29 @@ nla_put_failure: #define ctnetlink_dump_mark(a, b) (0) #endif +#define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) + +static inline int +ctnetlink_dump_master(struct sk_buff *skb, const struct nf_conn *ct) +{ + struct nlattr *nest_parms; + + if (!(ct->status & IPS_EXPECTED)) + return 0; + + nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED); + if (!nest_parms) + goto nla_put_failure; + if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0) + goto nla_put_failure; + nla_nest_end(skb, nest_parms); + + return 0; + +nla_put_failure: + return -1; +} + #ifdef CONFIG_NF_NAT_NEEDED static inline int dump_nat_seq_adj(struct sk_buff *skb, const struct nf_nat_seq *natseq, int type) @@ -371,6 +394,7 @@ ctnetlink_fill_info(struct sk_buff *skb, u32 pid, u32 seq, ctnetlink_dump_mark(skb, ct) < 0 || ctnetlink_dump_id(skb, ct) < 0 || ctnetlink_dump_use(skb, ct) < 0 || + ctnetlink_dump_master(skb, ct) < 0 || ctnetlink_dump_nat_seq_adj(skb, ct) < 0) goto nla_put_failure; @@ -475,6 +499,10 @@ static int ctnetlink_conntrack_event(struct notifier_block *this, ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)) goto nla_put_failure; + if (events & IPCT_RELATED && + ctnetlink_dump_master(skb, ct) < 0) + goto nla_put_failure; + if (events & IPCT_NATSEQADJ && ctnetlink_dump_nat_seq_adj(skb, ct) < 0) goto nla_put_failure; |