Differential D26449 Diff 77371 sys/net/route/nhop.h

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sys/net/route/nhop.h

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	*			*
	* Currently we verify whether link is up or not on every packet, which can be			* Currently we verify whether link is up or not on every packet, which can be
	* quite costy.			* quite costy.
	* TODO: subscribe for the interface notifications and update the nexthops			* TODO: subscribe for the interface notifications and update the nexthops
	* with NHF_INVALID flag.			* with NHF_INVALID flag.
	*/			*/

	#define NH_IS_VALID(_nh) RT_LINK_IS_UP((_nh)->nh_ifp)			#define NH_IS_VALID(_nh) RT_LINK_IS_UP((_nh)->nh_ifp)
	#define NH_IS_MULTIPATH(_nh) ((_nh)->nh_flags & NHF_MULTIPATH)			#define NH_IS_NHGRP(_nh) ((_nh)->nh_flags & NHF_MULTIPATH)

	#define RT_GATEWAY(_rt) ((struct sockaddr *)&(_rt)->rt_nhop->gw4_sa)			#define RT_GATEWAY(_rt) ((struct sockaddr *)&(_rt)->rt_nhop->gw4_sa)
	#define RT_GATEWAY_CONST(_rt) ((const struct sockaddr *)&(_rt)->rt_nhop->gw4_sa)			#define RT_GATEWAY_CONST(_rt) ((const struct sockaddr *)&(_rt)->rt_nhop->gw4_sa)

	#define NH_FREE(_nh) do { \			#define NH_FREE(_nh) do { \
	nhop_free(_nh); \			nhop_free(_nh); \
	/* guard against invalid refs */ \			/* guard against invalid refs */ \
	_nh = NULL; \			_nh = NULL; \
	} while (0)			} while (0)

				struct weightened_nhop {
				struct nhop_object *nh;
				uint32_t weight;
				};

	void nhop_free(struct nhop_object *nh);			void nhop_free(struct nhop_object *nh);

	struct sysctl_req;			struct sysctl_req;
	struct sockaddr_dl;			struct sockaddr_dl;
	struct rib_head;			struct rib_head;

	uint32_t nhop_get_idx(const struct nhop_object *nh);			uint32_t nhop_get_idx(const struct nhop_object *nh);
	enum nhop_type nhop_get_type(const struct nhop_object *nh);			enum nhop_type nhop_get_type(const struct nhop_object *nh);
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	};			};

	struct nhop_addrs {			struct nhop_addrs {
	uint32_t na_len; /* length of the datastructure */			uint32_t na_len; /* length of the datastructure */
	uint16_t gw_sa_off; /* offset of gateway SA */			uint16_t gw_sa_off; /* offset of gateway SA */
	uint16_t src_sa_off; /* offset of src address SA */			uint16_t src_sa_off; /* offset of src address SA */
	};			};

	struct mpath_nhop_external {			#define NHG_C_TYPE_CNHOPS 0x1 /* Control plane nhops list */
				#define NHG_C_TYPE_DNHOPS 0x2 /* Dataplane nhops list */
				struct nhgrp_container {
				uint32_t nhgc_len; /* container length */
				uint16_t nhgc_count; /* number of items */
				uint8_t nhgc_type; /* container type */
				uint8_t nhgc_subtype; /* container subtype */
				};

				struct nhgrp_nhop_external {
	uint32_t nh_idx;			uint32_t nh_idx;
	uint32_t nh_weight;			uint32_t nh_weight;
	};			};

	struct mpath_external {			/*
	uint32_t mp_idx;			* Layout:
	uint32_t mp_refcount;			* - nhgrp_external
	uint32_t mp_nh_count;			* - nhgrp_container (control plane nhops list)
	uint32_t mp_group_size;			* - nhgrp_nhop_external
				* - nhgrp_nhop_external
				* ..
				* - nhgrp_container (dataplane nhops list)
				* - nhgrp_nhop_external
				* - nhgrp_nhop_external
				*/
				struct nhgrp_external {
				uint32_t nhg_idx; /* Nexthop group index */
				uint32_t nhg_refcount; /* number of references */
	};			};

	#endif			#endif