Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / uapi / linux / netfilter / xt_hashlimit.h

diff --git a/kernel/include/uapi/linux/netfilter/xt_hashlimit.h b/kernel/include/uapi/linux/netfilter/xt_hashlimit.h
new file mode 100644 (file)
index 0000000..cbfc43d
--- /dev/null
+++ b/kernel/include/uapi/linux/netfilter/xt_hashlimit.h
@@ -0,0 +1,73 @@
+#ifndef _UAPI_XT_HASHLIMIT_H
+#define _UAPI_XT_HASHLIMIT_H
+
+#include <linux/types.h>
+
+/* timings are in milliseconds. */
+#define XT_HASHLIMIT_SCALE 10000
+/* 1/10,000 sec period => max of 10,000/sec.  Min rate is then 429490
+ * seconds, or one packet every 59 hours.
+ */
+
+/* packet length accounting is done in 16-byte steps */
+#define XT_HASHLIMIT_BYTE_SHIFT 4
+
+/* details of this structure hidden by the implementation */
+struct xt_hashlimit_htable;
+
+enum {
+       XT_HASHLIMIT_HASH_DIP = 1 << 0,
+       XT_HASHLIMIT_HASH_DPT = 1 << 1,
+       XT_HASHLIMIT_HASH_SIP = 1 << 2,
+       XT_HASHLIMIT_HASH_SPT = 1 << 3,
+       XT_HASHLIMIT_INVERT   = 1 << 4,
+       XT_HASHLIMIT_BYTES    = 1 << 5,
+};
+
+struct hashlimit_cfg {
+       __u32 mode;       /* bitmask of XT_HASHLIMIT_HASH_* */
+       __u32 avg;    /* Average secs between packets * scale */
+       __u32 burst;  /* Period multiplier for upper limit. */
+
+       /* user specified */
+       __u32 size;             /* how many buckets */
+       __u32 max;              /* max number of entries */
+       __u32 gc_interval;      /* gc interval */
+       __u32 expire;   /* when do entries expire? */
+};
+
+struct xt_hashlimit_info {
+       char name [IFNAMSIZ];           /* name */
+       struct hashlimit_cfg cfg;
+
+       /* Used internally by the kernel */
+       struct xt_hashlimit_htable *hinfo;
+       union {
+               void *ptr;
+               struct xt_hashlimit_info *master;
+       } u;
+};
+
+struct hashlimit_cfg1 {
+       __u32 mode;       /* bitmask of XT_HASHLIMIT_HASH_* */
+       __u32 avg;    /* Average secs between packets * scale */
+       __u32 burst;  /* Period multiplier for upper limit. */
+
+       /* user specified */
+       __u32 size;             /* how many buckets */
+       __u32 max;              /* max number of entries */
+       __u32 gc_interval;      /* gc interval */
+       __u32 expire;   /* when do entries expire? */
+
+       __u8 srcmask, dstmask;
+};
+
+struct xt_hashlimit_mtinfo1 {
+       char name[IFNAMSIZ];
+       struct hashlimit_cfg1 cfg;
+
+       /* Used internally by the kernel */
+       struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));
+};
+
+#endif /* _UAPI_XT_HASHLIMIT_H */