/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI__LINUX_IF_PACKET_H
#define _UAPI__LINUX_IF_PACKET_H
#include <asm /byteorder.h>
#include <linux/types.h>
struct sockaddr_pkt {
unsigned short spkt_family;
unsigned char spkt_device[14 ];
__be16 spkt_protocol;
};
struct sockaddr_ll {
unsigned short sll_family;
__be16 sll_protocol;
int sll_ifindex;
unsigned short sll_hatype;
unsigned char sll_pkttype;
unsigned char sll_halen;
unsigned char sll_addr[8 ];
};
/* Packet types */
#define PACKET_HOST 0 /* To us */
#define PACKET_BROADCAST 1 /* To all */
#define PACKET_MULTICAST 2 /* To group */
#define PACKET_OTHERHOST 3 /* To someone else */
#define PACKET_OUTGOING 4 /* Outgoing of any type */
#define PACKET_LOOPBACK 5 /* MC/BRD frame looped back */
#define PACKET_USER 6 /* To user space */
#define PACKET_KERNEL 7 /* To kernel space */
/* Unused, PACKET_FASTROUTE and PACKET_LOOPBACK are invisible to user space */
#define PACKET_FASTROUTE 6 /* Fastrouted frame */
/* Packet socket options */
#define PACKET_ADD_MEMBERSHIP 1
#define PACKET_DROP_MEMBERSHIP 2
#define PACKET_RECV_OUTPUT 3
/* Value 4 is still used by obsolete turbo-packet. */
#define PACKET_RX_RING 5
#define PACKET_STATISTICS 6
#define PACKET_COPY_THRESH 7
#define PACKET_AUXDATA 8
#define PACKET_ORIGDEV 9
#define PACKET_VERSION 10
#define PACKET_HDRLEN 11
#define PACKET_RESERVE 12
#define PACKET_TX_RING 13
#define PACKET_LOSS 14
#define PACKET_VNET_HDR 15
#define PACKET_TX_TIMESTAMP 16
#define PACKET_TIMESTAMP 17
#define PACKET_FANOUT 18
#define PACKET_TX_HAS_OFF 19
#define PACKET_QDISC_BYPASS 20
#define PACKET_ROLLOVER_STATS 21
#define PACKET_FANOUT_DATA 22
#define PACKET_IGNORE_OUTGOING 23
#define PACKET_VNET_HDR_SZ 24
#define PACKET_FANOUT_HASH 0
#define PACKET_FANOUT_LB 1
#define PACKET_FANOUT_CPU 2
#define PACKET_FANOUT_ROLLOVER 3
#define PACKET_FANOUT_RND 4
#define PACKET_FANOUT_QM 5
#define PACKET_FANOUT_CBPF 6
#define PACKET_FANOUT_EBPF 7
#define PACKET_FANOUT_FLAG_ROLLOVER 0 x1000
#define PACKET_FANOUT_FLAG_UNIQUEID 0 x2000
#define PACKET_FANOUT_FLAG_IGNORE_OUTGOING 0 x4000
#define PACKET_FANOUT_FLAG_DEFRAG 0 x8000
struct tpacket_stats {
unsigned int tp_packets;
unsigned int tp_drops;
};
struct tpacket_stats_v3 {
unsigned int tp_packets;
unsigned int tp_drops;
unsigned int tp_freeze_q_cnt;
};
struct tpacket_rollover_stats {
__aligned_u64 tp_all;
__aligned_u64 tp_huge;
__aligned_u64 tp_failed;
};
union tpacket_stats_u {
struct tpacket_stats stats1;
struct tpacket_stats_v3 stats3;
};
struct tpacket_auxdata {
__u32 tp_status;
__u32 tp_len;
__u32 tp_snaplen;
__u16 tp_mac;
__u16 tp_net;
__u16 tp_vlan_tci;
__u16 tp_vlan_tpid;
};
/* Rx ring - header status */
#define TP_STATUS_KERNEL 0
#define TP_STATUS_USER (1 << 0 )
#define TP_STATUS_COPY (1 << 1 )
#define TP_STATUS_LOSING (1 << 2 )
#define TP_STATUS_CSUMNOTREADY (1 << 3 )
#define TP_STATUS_VLAN_VALID (1 << 4 ) /* auxdata has valid tp_vlan_tci */
#define TP_STATUS_BLK_TMO (1 << 5 )
#define TP_STATUS_VLAN_TPID_VALID (1 << 6 ) /* auxdata has valid tp_vlan_tpid */
#define TP_STATUS_CSUM_VALID (1 << 7 )
#define TP_STATUS_GSO_TCP (1 << 8 )
/* Tx ring - header status */
#define TP_STATUS_AVAILABLE 0
#define TP_STATUS_SEND_REQUEST (1 << 0 )
#define TP_STATUS_SENDING (1 << 1 )
#define TP_STATUS_WRONG_FORMAT (1 << 2 )
/* Rx and Tx ring - header status */
#define TP_STATUS_TS_SOFTWARE (1 << 29 )
#define TP_STATUS_TS_SYS_HARDWARE (1 << 30 ) /* deprecated, never set */
#define TP_STATUS_TS_RAW_HARDWARE (1 U << 31 )
/* Rx ring - feature request bits */
#define TP_FT_REQ_FILL_RXHASH 0 x1
struct tpacket_hdr {
unsigned long tp_status;
unsigned int tp_len;
unsigned int tp_snaplen;
unsigned short tp_mac;
unsigned short tp_net;
unsigned int tp_sec;
unsigned int tp_usec;
};
#define TPACKET_ALIGNMENT 16
#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1 )&~(TPACKET_ALIGNMENT-1 ))
#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof (struct tpacket_hdr)) + sizeof (struct sockaddr_ll))
struct tpacket2_hdr {
__u32 tp_status;
__u32 tp_len;
__u32 tp_snaplen;
__u16 tp_mac;
__u16 tp_net;
__u32 tp_sec;
__u32 tp_nsec;
__u16 tp_vlan_tci;
__u16 tp_vlan_tpid;
__u8 tp_padding[4 ];
};
struct tpacket_hdr_variant1 {
__u32 tp_rxhash;
__u32 tp_vlan_tci;
__u16 tp_vlan_tpid;
__u16 tp_padding;
};
struct tpacket3_hdr {
__u32 tp_next_offset;
__u32 tp_sec;
__u32 tp_nsec;
__u32 tp_snaplen;
__u32 tp_len;
__u32 tp_status;
__u16 tp_mac;
__u16 tp_net;
/* pkt_hdr variants */
union {
struct tpacket_hdr_variant1 hv1;
};
__u8 tp_padding[8 ];
};
struct tpacket_bd_ts {
unsigned int ts_sec;
union {
unsigned int ts_usec;
unsigned int ts_nsec;
};
};
struct tpacket_hdr_v1 {
__u32 block_status;
__u32 num_pkts;
__u32 offset_to_first_pkt;
/* Number of valid bytes (including padding)
* blk_len < = tp_block_size
*/
__u32 blk_len;
/*
* Quite a few uses of sequence number :
* 1 . Make sure cache flush etc worked .
* Well , one can argue - why not use the increasing ts below ?
* But look at 2 . below first .
* 2 . When you pass around blocks to other user space decoders ,
* you can see which blk [ s ] is [ are ] outstanding etc .
* 3 . Validate kernel code .
*/
__aligned_u64 seq_num;
/*
* ts_last_pkt :
*
* Case 1 . Block has ' N ' ( N > = 1 ) packets and TMO ' d ( timed out )
* ts_last_pkt = = ' time - stamp of last packet ' and NOT the
* time when the timer fired and the block was closed .
* By providing the ts of the last packet we can absolutely
* guarantee that time - stamp wise , the first packet in the
* next block will never precede the last packet of the
* previous block .
* Case 2 . Block has zero packets and TMO ' d
* ts_last_pkt = time when the timer fired and the block
* was closed .
* Case 3 . Block has ' N ' packets and NO TMO .
* ts_last_pkt = time - stamp of the last pkt in the block .
*
* ts_first_pkt :
* Is always the time - stamp when the block was opened .
* Case a ) ZERO packets
* No packets to deal with but at least you know
* the time - interval of this block .
* Case b ) Non - zero packets
* Use the ts of the first packet in the block .
*
*/
struct tpacket_bd_ts ts_first_pkt, ts_last_pkt;
};
union tpacket_bd_header_u {
struct tpacket_hdr_v1 bh1;
};
struct tpacket_block_desc {
__u32 version;
__u32 offset_to_priv;
union tpacket_bd_header_u hdr;
};
#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof (struct tpacket2_hdr)) + sizeof (struct sockaddr_ll))
#define TPACKET3_HDRLEN (TPACKET_ALIGN(sizeof (struct tpacket3_hdr)) + sizeof (struct sockaddr_ll))
enum tpacket_versions {
TPACKET_V1,
TPACKET_V2,
TPACKET_V3
};
/*
Frame structure :
- Start . Frame must be aligned to TPACKET_ALIGNMENT = 16
- struct tpacket_hdr
- pad to TPACKET_ALIGNMENT = 16
- struct sockaddr_ll
- Gap , chosen so that packet data ( Start + tp_net ) aligns to
TPACKET_ALIGNMENT = 16
- Start + tp_mac : [ Optional MAC header ]
- Start + tp_net : Packet data , aligned to TPACKET_ALIGNMENT = 16 .
- Pad to align to TPACKET_ALIGNMENT = 16
*/
struct tpacket_req {
unsigned int tp_block_size; /* Minimal size of contiguous block */
unsigned int tp_block_nr; /* Number of blocks */
unsigned int tp_frame_size; /* Size of frame */
unsigned int tp_frame_nr; /* Total number of frames */
};
struct tpacket_req3 {
unsigned int tp_block_size; /* Minimal size of contiguous block */
unsigned int tp_block_nr; /* Number of blocks */
unsigned int tp_frame_size; /* Size of frame */
unsigned int tp_frame_nr; /* Total number of frames */
unsigned int tp_retire_blk_tov; /* timeout in msecs */
unsigned int tp_sizeof_priv; /* offset to private data area */
unsigned int tp_feature_req_word;
};
union tpacket_req_u {
struct tpacket_req req;
struct tpacket_req3 req3;
};
struct packet_mreq {
int mr_ifindex;
unsigned short mr_type;
unsigned short mr_alen;
unsigned char mr_address[8 ];
};
struct fanout_args {
#if defined (__LITTLE_ENDIAN_BITFIELD)
__u16 id;
__u16 type_flags;
#else
__u16 type_flags;
__u16 id;
#endif
__u32 max_num_members;
};
#define PACKET_MR_MULTICAST 0
#define PACKET_MR_PROMISC 1
#define PACKET_MR_ALLMULTI 2
#define PACKET_MR_UNICAST 3
#endif
Messung V0.5 in Prozent C=95 H=99 G=96
¤ Dauer der Verarbeitung: 0.15 Sekunden
(vorverarbeitet am 2026-09-27)
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