diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2006-01-05 12:19:23 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-01-05 12:19:23 -0800 |
| commit | 87711cb81c33e75fe8c95137fe62c8d462ff781c (patch) | |
| tree | 0e29e0143cca698931a867049a26f1702de68bf3 /net | |
| parent | c1d10adb4a521de5760112853f42aaeefcec96eb (diff) | |
| download | lwn-87711cb81c33e75fe8c95137fe62c8d462ff781c.tar.gz lwn-87711cb81c33e75fe8c95137fe62c8d462ff781c.zip | |
[NETFILTER]: Filter dumped entries based on the layer 3 protocol number
Dump entries of a given Layer 3 protocol number.
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')
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 4f2e50952a12..73ab16bc7d40 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -400,6 +400,8 @@ static int ctnetlink_done(struct netlink_callback *cb) return 0; } +#define L3PROTO(ct) ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num + static int ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) { @@ -407,6 +409,8 @@ ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) struct nf_conntrack_tuple_hash *h; struct list_head *i; u_int32_t *id = (u_int32_t *) &cb->args[1]; + struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh); + u_int8_t l3proto = nfmsg->nfgen_family; DEBUGP("entered %s, last bucket=%lu id=%u\n", __FUNCTION__, cb->args[0], *id); @@ -418,6 +422,11 @@ ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) if (DIRECTION(h) != IP_CT_DIR_ORIGINAL) continue; ct = nf_ct_tuplehash_to_ctrack(h); + /* Dump entries of a given L3 protocol number. + * If it is not specified, ie. l3proto == 0, + * then dump everything. */ + if (l3proto && L3PROTO(ct) != l3proto) + continue; if (ct->id <= *id) continue; if (ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).pid, @@ -444,6 +453,8 @@ ctnetlink_dump_table_w(struct sk_buff *skb, struct netlink_callback *cb) struct nf_conntrack_tuple_hash *h; struct list_head *i; u_int32_t *id = (u_int32_t *) &cb->args[1]; + struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh); + u_int8_t l3proto = nfmsg->nfgen_family; DEBUGP("entered %s, last bucket=%u id=%u\n", __FUNCTION__, cb->args[0], *id); @@ -455,6 +466,8 @@ ctnetlink_dump_table_w(struct sk_buff *skb, struct netlink_callback *cb) if (DIRECTION(h) != IP_CT_DIR_ORIGINAL) continue; ct = nf_ct_tuplehash_to_ctrack(h); + if (l3proto && L3PROTO(ct) != l3proto) + continue; if (ct->id <= *id) continue; if (ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).pid, @@ -750,9 +763,6 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, if (nlh->nlmsg_flags & NLM_F_DUMP) { u32 rlen; - if (nfmsg->nfgen_family != AF_INET) - return -EAFNOSUPPORT; - if (NFNL_MSG_TYPE(nlh->nlmsg_type) == IPCTNL_MSG_CT_GET_CTRZERO) { #ifdef CONFIG_NF_CT_ACCT @@ -1251,12 +1261,16 @@ ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) struct nf_conntrack_expect *exp = NULL; struct list_head *i; u_int32_t *id = (u_int32_t *) &cb->args[0]; + struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh); + u_int8_t l3proto = nfmsg->nfgen_family; DEBUGP("entered %s, last id=%llu\n", __FUNCTION__, *id); read_lock_bh(&nf_conntrack_lock); list_for_each_prev(i, &nf_conntrack_expect_list) { exp = (struct nf_conntrack_expect *) i; + if (l3proto && exp->tuple.src.l3num != l3proto) + continue; if (exp->id <= *id) continue; if (ctnetlink_exp_fill_info(skb, NETLINK_CB(cb->skb).pid, @@ -1298,9 +1312,6 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb, if (nlh->nlmsg_flags & NLM_F_DUMP) { u32 rlen; - if (nfmsg->nfgen_family != AF_INET) - return -EAFNOSUPPORT; - if ((*errp = netlink_dump_start(ctnl, skb, nlh, ctnetlink_exp_dump_table, ctnetlink_done)) != 0) |