#include <net/netfilter/nf_conntrack_acct.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/nf_conntrack_timestamp.h>
+#include <net/netfilter/nf_conntrack_labels.h>
#ifdef CONFIG_NF_NAT_NEEDED
#include <net/netfilter/nf_nat_core.h>
#include <net/netfilter/nf_nat_l4proto.h>
#define ctnetlink_dump_secctx(a, b) (0)
#endif
+#ifdef CONFIG_NF_CONNTRACK_LABELS
+static int ctnetlink_label_size(const struct nf_conn *ct)
+{
+ struct nf_conn_labels *labels = nf_ct_labels_find(ct);
+
+ if (!labels)
+ return 0;
+ return nla_total_size(labels->words * sizeof(long));
+}
+
+static int
+ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct)
+{
+ struct nf_conn_labels *labels = nf_ct_labels_find(ct);
+ unsigned int len, i;
+
+ if (!labels)
+ return 0;
+
+ len = labels->words * sizeof(long);
+ i = 0;
+ do {
+ if (labels->bits[i] != 0)
+ return nla_put(skb, CTA_LABELS, len, labels->bits);
+ i++;
+ } while (i < labels->words);
+
+ return 0;
+}
+#else
+#define ctnetlink_dump_labels(a, b) (0)
+#define ctnetlink_label_size(a) (0)
+#endif
+
#define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple)
static inline int
ctnetlink_dump_helpinfo(skb, ct) < 0 ||
ctnetlink_dump_mark(skb, ct) < 0 ||
ctnetlink_dump_secctx(skb, ct) < 0 ||
+ ctnetlink_dump_labels(skb, ct) < 0 ||
ctnetlink_dump_id(skb, ct) < 0 ||
ctnetlink_dump_use(skb, ct) < 0 ||
ctnetlink_dump_master(skb, ct) < 0 ||
+ nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */
#endif
+ ctnetlink_proto_size(ct)
+ + ctnetlink_label_size(ct)
;
}
&& ctnetlink_dump_secctx(skb, ct) < 0)
goto nla_put_failure;
#endif
+ if (events & (1 << IPCT_LABEL) &&
+ ctnetlink_dump_labels(skb, ct) < 0)
+ goto nla_put_failure;
if (events & (1 << IPCT_RELATED) &&
ctnetlink_dump_master(skb, ct) < 0)
return 0;
}
+#define __CTA_LABELS_MAX_LENGTH ((XT_CONNLABEL_MAXBIT + 1) / BITS_PER_BYTE)
static const struct nla_policy ct_nla_policy[CTA_MAX+1] = {
[CTA_TUPLE_ORIG] = { .type = NLA_NESTED },
[CTA_TUPLE_REPLY] = { .type = NLA_NESTED },
[CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED },
[CTA_ZONE] = { .type = NLA_U16 },
[CTA_MARK_MASK] = { .type = NLA_U32 },
+ [CTA_LABELS] = { .type = NLA_BINARY,
+ .len = __CTA_LABELS_MAX_LENGTH },
+ [CTA_LABELS_MASK] = { .type = NLA_BINARY,
+ .len = __CTA_LABELS_MAX_LENGTH },
};
static int
if (!parse_nat_setup) {
#ifdef CONFIG_MODULES
rcu_read_unlock();
- nfnl_unlock();
+ nfnl_unlock(NFNL_SUBSYS_CTNETLINK);
if (request_module("nf-nat") < 0) {
- nfnl_lock();
+ nfnl_lock(NFNL_SUBSYS_CTNETLINK);
rcu_read_lock();
return -EOPNOTSUPP;
}
- nfnl_lock();
+ nfnl_lock(NFNL_SUBSYS_CTNETLINK);
rcu_read_lock();
if (nfnetlink_parse_nat_setup_hook)
return -EAGAIN;
if (err == -EAGAIN) {
#ifdef CONFIG_MODULES
rcu_read_unlock();
- nfnl_unlock();
+ nfnl_unlock(NFNL_SUBSYS_CTNETLINK);
if (request_module("nf-nat-%u", nf_ct_l3num(ct)) < 0) {
- nfnl_lock();
+ nfnl_lock(NFNL_SUBSYS_CTNETLINK);
rcu_read_lock();
return -EOPNOTSUPP;
}
- nfnl_lock();
+ nfnl_lock(NFNL_SUBSYS_CTNETLINK);
rcu_read_lock();
#else
err = -EOPNOTSUPP;
}
#endif
+static int
+ctnetlink_attach_labels(struct nf_conn *ct, const struct nlattr * const cda[])
+{
+#ifdef CONFIG_NF_CONNTRACK_LABELS
+ size_t len = nla_len(cda[CTA_LABELS]);
+ const void *mask = cda[CTA_LABELS_MASK];
+
+ if (len & (sizeof(u32)-1)) /* must be multiple of u32 */
+ return -EINVAL;
+
+ if (mask) {
+ if (nla_len(cda[CTA_LABELS_MASK]) == 0 ||
+ nla_len(cda[CTA_LABELS_MASK]) != len)
+ return -EINVAL;
+ mask = nla_data(cda[CTA_LABELS_MASK]);
+ }
+
+ len /= sizeof(u32);
+
+ return nf_connlabels_replace(ct, nla_data(cda[CTA_LABELS]), mask, len);
+#else
+ return -EOPNOTSUPP;
+#endif
+}
+
static int
ctnetlink_change_conntrack(struct nf_conn *ct,
const struct nlattr * const cda[])
return err;
}
#endif
+ if (cda[CTA_LABELS]) {
+ err = ctnetlink_attach_labels(ct, cda);
+ if (err < 0)
+ return err;
+ }
return 0;
}
nf_ct_acct_ext_add(ct, GFP_ATOMIC);
nf_ct_tstamp_ext_add(ct, GFP_ATOMIC);
nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC);
+ nf_ct_labels_ext_add(ct);
+
/* we must add conntrack extensions before confirmation. */
ct->status |= IPS_CONFIRMED;
if (nlh->nlmsg_flags & NLM_F_CREATE) {
enum ip_conntrack_events events;
+ if (!cda[CTA_TUPLE_ORIG] || !cda[CTA_TUPLE_REPLY])
+ return -EINVAL;
+
ct = ctnetlink_create_conntrack(net, zone, cda, &otuple,
&rtuple, u3);
if (IS_ERR(ct))
else
events = IPCT_NEW;
+ if (cda[CTA_LABELS] &&
+ ctnetlink_attach_labels(ct, cda) == 0)
+ events |= (1 << IPCT_LABEL);
+
nf_conntrack_eventmask_report((1 << IPCT_REPLY) |
(1 << IPCT_ASSURED) |
(1 << IPCT_HELPER) |
if (ct->mark && ctnetlink_dump_mark(skb, ct) < 0)
goto nla_put_failure;
#endif
+ if (ctnetlink_dump_labels(skb, ct) < 0)
+ goto nla_put_failure;
rcu_read_unlock();
return 0;
if (err < 0)
return err;
}
+ if (cda[CTA_LABELS]) {
+ err = ctnetlink_attach_labels(ct, cda);
+ if (err < 0)
+ return err;
+ }
#if defined(CONFIG_NF_CONNTRACK_MARK)
if (cda[CTA_MARK])
ct->mark = ntohl(nla_get_be32(cda[CTA_MARK]));
struct net *net = sock_net(skb->sk);
struct nf_conntrack_expect *exp, *last;
struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh);
- struct hlist_node *n;
u_int8_t l3proto = nfmsg->nfgen_family;
rcu_read_lock();
last = (struct nf_conntrack_expect *)cb->args[1];
for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) {
restart:
- hlist_for_each_entry(exp, n, &net->ct.expect_hash[cb->args[0]],
+ hlist_for_each_entry(exp, &net->ct.expect_hash[cb->args[0]],
hnode) {
if (l3proto && exp->tuple.src.l3num != l3proto)
continue;
struct nf_conntrack_expect *exp;
struct nf_conntrack_tuple tuple;
struct nfgenmsg *nfmsg = nlmsg_data(nlh);
- struct hlist_node *n, *next;
+ struct hlist_node *next;
u_int8_t u3 = nfmsg->nfgen_family;
unsigned int i;
u16 zone;
/* delete all expectations for this helper */
spin_lock_bh(&nf_conntrack_lock);
for (i = 0; i < nf_ct_expect_hsize; i++) {
- hlist_for_each_entry_safe(exp, n, next,
+ hlist_for_each_entry_safe(exp, next,
&net->ct.expect_hash[i],
hnode) {
m_help = nfct_help(exp->master);
/* This basically means we have to flush everything*/
spin_lock_bh(&nf_conntrack_lock);
for (i = 0; i < nf_ct_expect_hsize; i++) {
- hlist_for_each_entry_safe(exp, n, next,
+ hlist_for_each_entry_safe(exp, next,
&net->ct.expect_hash[i],
hnode) {
if (del_timer(&exp->timeout)) {