/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _NFNETLINK_QUEUE_H
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#define _NFNETLINK_QUEUE_H
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#include <linux/types.h>
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#include <linux/netfilter/nfnetlink.h>
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enum nfqnl_msg_types {
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NFQNL_MSG_PACKET, /* packet from kernel to userspace */
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NFQNL_MSG_VERDICT, /* verdict from userspace to kernel */
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NFQNL_MSG_CONFIG, /* connect to a particular queue */
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NFQNL_MSG_VERDICT_BATCH, /* batchv from userspace to kernel */
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NFQNL_MSG_MAX
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};
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struct nfqnl_msg_packet_hdr {
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__be32 packet_id; /* unique ID of packet in queue */
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__be16 hw_protocol; /* hw protocol (network order) */
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__u8 hook; /* netfilter hook */
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} __attribute__ ((packed));
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struct nfqnl_msg_packet_hw {
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__be16 hw_addrlen;
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__u16 _pad;
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__u8 hw_addr[8];
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};
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struct nfqnl_msg_packet_timestamp {
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__aligned_be64 sec;
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__aligned_be64 usec;
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};
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enum nfqnl_vlan_attr {
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NFQA_VLAN_UNSPEC,
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NFQA_VLAN_PROTO, /* __be16 skb vlan_proto */
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NFQA_VLAN_TCI, /* __be16 skb htons(vlan_tci) */
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__NFQA_VLAN_MAX,
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};
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#define NFQA_VLAN_MAX (__NFQA_VLAN_MAX - 1)
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enum nfqnl_attr_type {
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NFQA_UNSPEC,
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NFQA_PACKET_HDR,
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NFQA_VERDICT_HDR, /* nfqnl_msg_verdict_hrd */
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NFQA_MARK, /* __u32 nfmark */
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NFQA_TIMESTAMP, /* nfqnl_msg_packet_timestamp */
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NFQA_IFINDEX_INDEV, /* __u32 ifindex */
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NFQA_IFINDEX_OUTDEV, /* __u32 ifindex */
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NFQA_IFINDEX_PHYSINDEV, /* __u32 ifindex */
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NFQA_IFINDEX_PHYSOUTDEV, /* __u32 ifindex */
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NFQA_HWADDR, /* nfqnl_msg_packet_hw */
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NFQA_PAYLOAD, /* opaque data payload */
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NFQA_CT, /* nf_conntrack_netlink.h */
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NFQA_CT_INFO, /* enum ip_conntrack_info */
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NFQA_CAP_LEN, /* __u32 length of captured packet */
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NFQA_SKB_INFO, /* __u32 skb meta information */
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NFQA_EXP, /* nf_conntrack_netlink.h */
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NFQA_UID, /* __u32 sk uid */
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NFQA_GID, /* __u32 sk gid */
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NFQA_SECCTX, /* security context string */
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NFQA_VLAN, /* nested attribute: packet vlan info */
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NFQA_L2HDR, /* full L2 header */
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__NFQA_MAX
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};
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#define NFQA_MAX (__NFQA_MAX - 1)
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struct nfqnl_msg_verdict_hdr {
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__be32 verdict;
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__be32 id;
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};
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enum nfqnl_msg_config_cmds {
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NFQNL_CFG_CMD_NONE,
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NFQNL_CFG_CMD_BIND,
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NFQNL_CFG_CMD_UNBIND,
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NFQNL_CFG_CMD_PF_BIND,
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NFQNL_CFG_CMD_PF_UNBIND,
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};
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struct nfqnl_msg_config_cmd {
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__u8 command; /* nfqnl_msg_config_cmds */
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__u8 _pad;
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__be16 pf; /* AF_xxx for PF_[UN]BIND */
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};
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enum nfqnl_config_mode {
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NFQNL_COPY_NONE,
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NFQNL_COPY_META,
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NFQNL_COPY_PACKET,
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};
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struct nfqnl_msg_config_params {
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__be32 copy_range;
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__u8 copy_mode; /* enum nfqnl_config_mode */
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} __attribute__ ((packed));
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enum nfqnl_attr_config {
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NFQA_CFG_UNSPEC,
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NFQA_CFG_CMD, /* nfqnl_msg_config_cmd */
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NFQA_CFG_PARAMS, /* nfqnl_msg_config_params */
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NFQA_CFG_QUEUE_MAXLEN, /* __u32 */
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NFQA_CFG_MASK, /* identify which flags to change */
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NFQA_CFG_FLAGS, /* value of these flags (__u32) */
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__NFQA_CFG_MAX
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};
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#define NFQA_CFG_MAX (__NFQA_CFG_MAX-1)
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/* Flags for NFQA_CFG_FLAGS */
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#define NFQA_CFG_F_FAIL_OPEN (1 << 0)
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#define NFQA_CFG_F_CONNTRACK (1 << 1)
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#define NFQA_CFG_F_GSO (1 << 2)
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#define NFQA_CFG_F_UID_GID (1 << 3)
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#define NFQA_CFG_F_SECCTX (1 << 4)
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#define NFQA_CFG_F_MAX (1 << 5)
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/* flags for NFQA_SKB_INFO */
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/* packet appears to have wrong checksums, but they are ok */
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#define NFQA_SKB_CSUMNOTREADY (1 << 0)
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/* packet is GSO (i.e., exceeds device mtu) */
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#define NFQA_SKB_GSO (1 << 1)
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/* csum not validated (incoming device doesn't support hw checksum, etc.) */
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#define NFQA_SKB_CSUM_NOTVERIFIED (1 << 2)
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#endif /* _NFNETLINK_QUEUE_H */
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