Stephen Hemminger
parent
2a126a85fe
commit
5cf35d6ad7
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/*
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* Linux Socket Filter Data Structures
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*/
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#ifndef __LINUX_FILTER_H__
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#define __LINUX_FILTER_H__
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#include <linux/types.h>
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/*
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* Current version of the filter code architecture.
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*/
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#define BPF_MAJOR_VERSION 1
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#define BPF_MINOR_VERSION 1
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/*
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* Try and keep these values and structures similar to BSD, especially
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* the BPF code definitions which need to match so you can share filters
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*/
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struct sock_filter { /* Filter block */
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__u16 code; /* Actual filter code */
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__u8 jt; /* Jump true */
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__u8 jf; /* Jump false */
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__u32 k; /* Generic multiuse field */
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};
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struct sock_fprog { /* Required for SO_ATTACH_FILTER. */
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unsigned short len; /* Number of filter blocks */
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struct sock_filter *filter;
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};
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/*
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* Instruction classes
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*/
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#define BPF_CLASS(code) ((code) & 0x07)
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#define BPF_LD 0x00
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#define BPF_LDX 0x01
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#define BPF_ST 0x02
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#define BPF_STX 0x03
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#define BPF_ALU 0x04
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#define BPF_JMP 0x05
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#define BPF_RET 0x06
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#define BPF_MISC 0x07
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/* ld/ldx fields */
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#define BPF_SIZE(code) ((code) & 0x18)
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#define BPF_W 0x00
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#define BPF_H 0x08
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#define BPF_B 0x10
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#define BPF_MODE(code) ((code) & 0xe0)
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#define BPF_IMM 0x00
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#define BPF_ABS 0x20
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#define BPF_IND 0x40
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#define BPF_MEM 0x60
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#define BPF_LEN 0x80
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#define BPF_MSH 0xa0
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/* alu/jmp fields */
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#define BPF_OP(code) ((code) & 0xf0)
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#define BPF_ADD 0x00
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#define BPF_SUB 0x10
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#define BPF_MUL 0x20
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#define BPF_DIV 0x30
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#define BPF_OR 0x40
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#define BPF_AND 0x50
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#define BPF_LSH 0x60
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#define BPF_RSH 0x70
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#define BPF_NEG 0x80
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#define BPF_MOD 0x90
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#define BPF_XOR 0xa0
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#define BPF_JA 0x00
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#define BPF_JEQ 0x10
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#define BPF_JGT 0x20
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#define BPF_JGE 0x30
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#define BPF_JSET 0x40
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#define BPF_SRC(code) ((code) & 0x08)
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#define BPF_K 0x00
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#define BPF_X 0x08
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/* ret - BPF_K and BPF_X also apply */
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#define BPF_RVAL(code) ((code) & 0x18)
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#define BPF_A 0x10
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/* misc */
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#define BPF_MISCOP(code) ((code) & 0xf8)
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#define BPF_TAX 0x00
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#define BPF_TXA 0x80
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#ifndef BPF_MAXINSNS
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#define BPF_MAXINSNS 4096
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#endif
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/*
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* Macros for filter block array initializers.
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*/
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#ifndef BPF_STMT
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#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k }
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#endif
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#ifndef BPF_JUMP
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#define BPF_JUMP(code, k, jt, jf) { (unsigned short)(code), jt, jf, k }
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#endif
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/*
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* Number of scratch memory words for: BPF_ST and BPF_STX
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*/
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#define BPF_MEMWORDS 16
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/* RATIONALE. Negative offsets are invalid in BPF.
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We use them to reference ancillary data.
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Unlike introduction new instructions, it does not break
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existing compilers/optimizers.
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*/
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#define SKF_AD_OFF (-0x1000)
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#define SKF_AD_PROTOCOL 0
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#define SKF_AD_PKTTYPE 4
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#define SKF_AD_IFINDEX 8
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#define SKF_AD_NLATTR 12
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#define SKF_AD_NLATTR_NEST 16
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#define SKF_AD_MARK 20
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#define SKF_AD_QUEUE 24
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#define SKF_AD_HATYPE 28
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#define SKF_AD_RXHASH 32
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#define SKF_AD_CPU 36
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#define SKF_AD_ALU_XOR_X 40
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#define SKF_AD_VLAN_TAG 44
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#define SKF_AD_VLAN_TAG_PRESENT 48
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#define SKF_AD_PAY_OFFSET 52
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#define SKF_AD_MAX 56
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#define SKF_NET_OFF (-0x100000)
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#define SKF_LL_OFF (-0x200000)
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#endif /* __LINUX_FILTER_H__ */
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@ -0,0 +1,79 @@
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#ifndef __PACKET_DIAG_H__
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#define __PACKET_DIAG_H__
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#include <linux/types.h>
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struct packet_diag_req {
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__u8 sdiag_family;
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__u8 sdiag_protocol;
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__u16 pad;
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__u32 pdiag_ino;
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__u32 pdiag_show;
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__u32 pdiag_cookie[2];
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};
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#define PACKET_SHOW_INFO 0x00000001 /* Basic packet_sk information */
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#define PACKET_SHOW_MCLIST 0x00000002 /* A set of packet_diag_mclist-s */
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#define PACKET_SHOW_RING_CFG 0x00000004 /* Rings configuration parameters */
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#define PACKET_SHOW_FANOUT 0x00000008
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#define PACKET_SHOW_MEMINFO 0x00000010
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#define PACKET_SHOW_FILTER 0x00000020
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struct packet_diag_msg {
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__u8 pdiag_family;
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__u8 pdiag_type;
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__u16 pdiag_num;
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__u32 pdiag_ino;
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__u32 pdiag_cookie[2];
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};
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enum {
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PACKET_DIAG_INFO,
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PACKET_DIAG_MCLIST,
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PACKET_DIAG_RX_RING,
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PACKET_DIAG_TX_RING,
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PACKET_DIAG_FANOUT,
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PACKET_DIAG_UID,
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PACKET_DIAG_MEMINFO,
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PACKET_DIAG_FILTER,
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__PACKET_DIAG_MAX,
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};
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#define PACKET_DIAG_MAX (__PACKET_DIAG_MAX - 1)
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struct packet_diag_info {
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__u32 pdi_index;
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__u32 pdi_version;
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__u32 pdi_reserve;
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__u32 pdi_copy_thresh;
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__u32 pdi_tstamp;
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__u32 pdi_flags;
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#define PDI_RUNNING 0x1
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#define PDI_AUXDATA 0x2
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#define PDI_ORIGDEV 0x4
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#define PDI_VNETHDR 0x8
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#define PDI_LOSS 0x10
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};
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struct packet_diag_mclist {
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__u32 pdmc_index;
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__u32 pdmc_count;
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__u16 pdmc_type;
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__u16 pdmc_alen;
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__u8 pdmc_addr[MAX_ADDR_LEN];
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};
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struct packet_diag_ring {
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__u32 pdr_block_size;
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__u32 pdr_block_nr;
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__u32 pdr_frame_size;
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__u32 pdr_frame_nr;
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__u32 pdr_retire_tmo;
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__u32 pdr_sizeof_priv;
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__u32 pdr_features;
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};
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#endif
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