cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / filter.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/filter.h b/i686-linux-gnu-4.7/usr/include/linux/filter.h
new file mode 100644 (file)
index 0000000..eaef459
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/filter.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Linux Socket Filter Data Structures
+ */
+
+#ifndef __LINUX_FILTER_H__
+#define __LINUX_FILTER_H__
+
+
+#include <linux/types.h>
+#include <linux/bpf_common.h>
+
+/*
+ * Current version of the filter code architecture.
+ */
+#define BPF_MAJOR_VERSION 1
+#define BPF_MINOR_VERSION 1
+
+/*
+ *     Try and keep these values and structures similar to BSD, especially
+ *     the BPF code definitions which need to match so you can share filters
+ */
+ 
+struct sock_filter {   /* Filter block */
+       __u16   code;   /* Actual filter code */
+       __u8    jt;     /* Jump true */
+       __u8    jf;     /* Jump false */
+       __u32   k;      /* Generic multiuse field */
+};
+
+struct sock_fprog {    /* Required for SO_ATTACH_FILTER. */
+       unsigned short          len;    /* Number of filter blocks */
+       struct sock_filter *filter;
+};
+
+/* ret - BPF_K and BPF_X also apply */
+#define BPF_RVAL(code)  ((code) & 0x18)
+#define         BPF_A           0x10
+
+/* misc */
+#define BPF_MISCOP(code) ((code) & 0xf8)
+#define         BPF_TAX         0x00
+#define         BPF_TXA         0x80
+
+/*
+ * Macros for filter block array initializers.
+ */
+#ifndef BPF_STMT
+#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k }
+#endif
+#ifndef BPF_JUMP
+#define BPF_JUMP(code, k, jt, jf) { (unsigned short)(code), jt, jf, k }
+#endif
+
+/*
+ * Number of scratch memory words for: BPF_ST and BPF_STX
+ */
+#define BPF_MEMWORDS 16
+
+/* RATIONALE. Negative offsets are invalid in BPF.
+   We use them to reference ancillary data.
+   Unlike introduction new instructions, it does not break
+   existing compilers/optimizers.
+ */
+#define SKF_AD_OFF    (-0x1000)
+#define SKF_AD_PROTOCOL 0
+#define SKF_AD_PKTTYPE         4
+#define SKF_AD_IFINDEX         8
+#define SKF_AD_NLATTR  12
+#define SKF_AD_NLATTR_NEST     16
+#define SKF_AD_MARK    20
+#define SKF_AD_QUEUE   24
+#define SKF_AD_HATYPE  28
+#define SKF_AD_RXHASH  32
+#define SKF_AD_CPU     36
+#define SKF_AD_ALU_XOR_X       40
+#define SKF_AD_VLAN_TAG        44
+#define SKF_AD_VLAN_TAG_PRESENT 48
+#define SKF_AD_PAY_OFFSET      52
+#define SKF_AD_RANDOM  56
+#define SKF_AD_VLAN_TPID       60
+#define SKF_AD_MAX     64
+
+#define SKF_NET_OFF    (-0x100000)
+#define SKF_LL_OFF     (-0x200000)
+
+#define BPF_NET_OFF    SKF_NET_OFF
+#define BPF_LL_OFF     SKF_LL_OFF
+
+#endif /* __LINUX_FILTER_H__ */