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-rw-r--r--include/uapi/linux/nexthop.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/include/uapi/linux/nexthop.h b/include/uapi/linux/nexthop.h
new file mode 100644
index 0000000..37b14b4
--- /dev/null
+++ b/include/uapi/linux/nexthop.h
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_NEXTHOP_H
+#define _LINUX_NEXTHOP_H
+
+#include <linux/types.h>
+
+struct nhmsg {
+ unsigned char nh_family;
+ unsigned char nh_scope; /* return only */
+ unsigned char nh_protocol; /* Routing protocol that installed nh */
+ unsigned char resvd;
+ unsigned int nh_flags; /* RTNH_F flags */
+};
+
+/* entry in a nexthop group */
+struct nexthop_grp {
+ __u32 id; /* nexthop id - must exist */
+ __u8 weight; /* weight of this nexthop */
+ __u8 resvd1;
+ __u16 resvd2;
+};
+
+enum {
+ NEXTHOP_GRP_TYPE_MPATH, /* hash-threshold nexthop group
+ * default type if not specified
+ */
+ NEXTHOP_GRP_TYPE_RES, /* resilient nexthop group */
+ __NEXTHOP_GRP_TYPE_MAX,
+};
+
+#define NEXTHOP_GRP_TYPE_MAX (__NEXTHOP_GRP_TYPE_MAX - 1)
+
+enum {
+ NHA_UNSPEC,
+ NHA_ID, /* u32; id for nexthop. id == 0 means auto-assign */
+
+ NHA_GROUP, /* array of nexthop_grp */
+ NHA_GROUP_TYPE, /* u16 one of NEXTHOP_GRP_TYPE */
+ /* if NHA_GROUP attribute is added, no other attributes can be set */
+
+ NHA_BLACKHOLE, /* flag; nexthop used to blackhole packets */
+ /* if NHA_BLACKHOLE is added, OIF, GATEWAY, ENCAP can not be set */
+
+ NHA_OIF, /* u32; nexthop device */
+ NHA_GATEWAY, /* be32 (IPv4) or in6_addr (IPv6) gw address */
+ NHA_ENCAP_TYPE, /* u16; lwt encap type */
+ NHA_ENCAP, /* lwt encap data */
+
+ /* NHA_OIF can be appended to dump request to return only
+ * nexthops using given device
+ */
+ NHA_GROUPS, /* flag; only return nexthop groups in dump */
+ NHA_MASTER, /* u32; only return nexthops with given master dev */
+
+ NHA_FDB, /* flag; nexthop belongs to a bridge fdb */
+ /* if NHA_FDB is added, OIF, BLACKHOLE, ENCAP cannot be set */
+
+ /* nested; resilient nexthop group attributes */
+ NHA_RES_GROUP,
+ /* nested; nexthop bucket attributes */
+ NHA_RES_BUCKET,
+
+ __NHA_MAX,
+};
+
+#define NHA_MAX (__NHA_MAX - 1)
+
+enum {
+ NHA_RES_GROUP_UNSPEC,
+ /* Pad attribute for 64-bit alignment. */
+ NHA_RES_GROUP_PAD = NHA_RES_GROUP_UNSPEC,
+
+ /* u16; number of nexthop buckets in a resilient nexthop group */
+ NHA_RES_GROUP_BUCKETS,
+ /* clock_t as u32; nexthop bucket idle timer (per-group) */
+ NHA_RES_GROUP_IDLE_TIMER,
+ /* clock_t as u32; nexthop unbalanced timer */
+ NHA_RES_GROUP_UNBALANCED_TIMER,
+ /* clock_t as u64; nexthop unbalanced time */
+ NHA_RES_GROUP_UNBALANCED_TIME,
+
+ __NHA_RES_GROUP_MAX,
+};
+
+#define NHA_RES_GROUP_MAX (__NHA_RES_GROUP_MAX - 1)
+
+enum {
+ NHA_RES_BUCKET_UNSPEC,
+ /* Pad attribute for 64-bit alignment. */
+ NHA_RES_BUCKET_PAD = NHA_RES_BUCKET_UNSPEC,
+
+ /* u16; nexthop bucket index */
+ NHA_RES_BUCKET_INDEX,
+ /* clock_t as u64; nexthop bucket idle time */
+ NHA_RES_BUCKET_IDLE_TIME,
+ /* u32; nexthop id assigned to the nexthop bucket */
+ NHA_RES_BUCKET_NH_ID,
+
+ __NHA_RES_BUCKET_MAX,
+};
+
+#define NHA_RES_BUCKET_MAX (__NHA_RES_BUCKET_MAX - 1)
+
+#endif