diff options
| -rw-r--r-- | net/netfilter/nfnetlink_queue.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index 6889c7c855d1..5bebe78b9bbd 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -964,12 +964,18 @@ static struct notifier_block nfqnl_rtnl_notifier = { .notifier_call = nfqnl_rcv_nl_event, }; +static const struct nla_policy nfqa_vlan_policy[NFQA_VLAN_MAX + 1] = { + [NFQA_VLAN_TCI] = { .type = NLA_U16}, + [NFQA_VLAN_PROTO] = { .type = NLA_U16}, +}; + static const struct nla_policy nfqa_verdict_policy[NFQA_MAX+1] = { [NFQA_VERDICT_HDR] = { .len = sizeof(struct nfqnl_msg_verdict_hdr) }, [NFQA_MARK] = { .type = NLA_U32 }, [NFQA_PAYLOAD] = { .type = NLA_UNSPEC }, [NFQA_CT] = { .type = NLA_UNSPEC }, [NFQA_EXP] = { .type = NLA_UNSPEC }, + [NFQA_VLAN] = { .type = NLA_NESTED }, }; static const struct nla_policy nfqa_verdict_batch_policy[NFQA_MAX+1] = { @@ -1083,6 +1089,40 @@ static struct nf_conn *nfqnl_ct_parse(struct nfnl_ct_hook *nfnl_ct, return ct; } +static int nfqa_parse_bridge(struct nf_queue_entry *entry, + const struct nlattr * const nfqa[]) +{ + if (nfqa[NFQA_VLAN]) { + struct nlattr *tb[NFQA_VLAN_MAX + 1]; + int err; + + err = nla_parse_nested(tb, NFQA_VLAN_MAX, nfqa[NFQA_VLAN], + nfqa_vlan_policy); + if (err < 0) + return err; + + if (!tb[NFQA_VLAN_TCI] || !tb[NFQA_VLAN_PROTO]) + return -EINVAL; + + entry->skb->vlan_tci = ntohs(nla_get_be16(tb[NFQA_VLAN_TCI])); + entry->skb->vlan_proto = nla_get_be16(tb[NFQA_VLAN_PROTO]); + } + + if (nfqa[NFQA_L2HDR]) { + int mac_header_len = entry->skb->network_header - + entry->skb->mac_header; + + if (mac_header_len != nla_len(nfqa[NFQA_L2HDR])) + return -EINVAL; + else if (mac_header_len > 0) + memcpy(skb_mac_header(entry->skb), + nla_data(nfqa[NFQA_L2HDR]), + mac_header_len); + } + + return 0; +} + static int nfqnl_recv_verdict(struct net *net, struct sock *ctnl, struct sk_buff *skb, const struct nlmsghdr *nlh, @@ -1098,6 +1138,7 @@ static int nfqnl_recv_verdict(struct net *net, struct sock *ctnl, struct nfnl_ct_hook *nfnl_ct; struct nf_conn *ct = NULL; struct nfnl_queue_net *q = nfnl_queue_pernet(net); + int err; queue = instance_lookup(q, queue_num); if (!queue) @@ -1124,6 +1165,12 @@ static int nfqnl_recv_verdict(struct net *net, struct sock *ctnl, ct = nfqnl_ct_parse(nfnl_ct, nlh, nfqa, entry, &ctinfo); } + if (entry->state.pf == PF_BRIDGE) { + err = nfqa_parse_bridge(entry, nfqa); + if (err < 0) + return err; + } + if (nfqa[NFQA_PAYLOAD]) { u16 payload_len = nla_len(nfqa[NFQA_PAYLOAD]); int diff = payload_len - entry->skb->len; |