Differential D27219 Diff 79866 head/sys/net/route/route_helpers.c

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head/sys/net/route/route_helpers.c

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	/*			/*
	* RIB helper functions.			* RIB helper functions.
	*/			*/

	/*			/*
	* Calls @wa_f with @arg for each entry in the table specified by			* Calls @wa_f with @arg for each entry in the table specified by
	* @af and @fibnum.			* @af and @fibnum.
	*			*
	* Table is traversed under read lock.			* @ss_t callback is called before and after the tree traversal
				* while holding table lock.
				*
				* Table is traversed under read lock unless @wlock is set.
	*/			*/
	void			void
	rib_walk(int af, u_int fibnum, rt_walktree_f_t wa_f, void arg)			rib_walk_ext(uint32_t fibnum, int family, bool wlock, rib_walktree_f_t *wa_f,
				rib_walk_hook_f_t hook_f, void arg)
	{			{
	RIB_RLOCK_TRACKER;			RIB_RLOCK_TRACKER;
	struct rib_head *rnh;			struct rib_head *rnh;

	if ((rnh = rt_tables_get_rnh(fibnum, af)) == NULL)			if ((rnh = rt_tables_get_rnh(fibnum, family)) == NULL)
	return;			return;

				if (wlock)
				RIB_WLOCK(rnh);
				else
	RIB_RLOCK(rnh);			RIB_RLOCK(rnh);
				if (hook_f != NULL)
				hook_f(rnh, RIB_WALK_HOOK_PRE, arg);
	rnh->rnh_walktree(&rnh->head, (walktree_f_t *)wa_f, arg);			rnh->rnh_walktree(&rnh->head, (walktree_f_t *)wa_f, arg);
				if (hook_f != NULL)
				hook_f(rnh, RIB_WALK_HOOK_POST, arg);
				if (wlock)
				RIB_WUNLOCK(rnh);
				else
	RIB_RUNLOCK(rnh);			RIB_RUNLOCK(rnh);
	}			}

				/*
				* Calls @wa_f with @arg for each entry in the table specified by
				* @af and @fibnum.
				*
				* Table is traversed under read lock unless @wlock is set.
				*/
				void
				rib_walk(uint32_t fibnum, int family, bool wlock, rib_walktree_f_t *wa_f,
				void *arg)
				{

				rib_walk_ext(fibnum, family, wlock, wa_f, NULL, arg);
				}

				/*
				* Iterates over all existing fibs in system calling
				* @hook_f function before/after traversing each fib.
				* Calls @wa_f function for each element in current fib.
				* If af is not AF_UNSPEC, iterates over fibs in particular
				* address family.
				*/
				void
				rib_foreach_table_walk(int family, bool wlock, rib_walktree_f_t *wa_f,
				rib_walk_hook_f_t hook_f, void arg)
				{

				for (uint32_t fibnum = 0; fibnum < rt_numfibs; fibnum++) {
				/* Do we want some specific family? */
				if (family != AF_UNSPEC) {
				rib_walk_ext(fibnum, family, wlock, wa_f, hook_f, arg);
				continue;
				}

				for (int i = 1; i <= AF_MAX; i++)
				rib_walk_ext(fibnum, i, wlock, wa_f, hook_f, arg);
				}
				}

				/*
				* Iterates over all existing fibs in system and deletes each element
				* for which @filter_f function returns non-zero value.
				* If @family is not AF_UNSPEC, iterates over fibs in particular
				* address family.
				*/
				void
				rib_foreach_table_walk_del(int family, rib_filter_f_t filter_f, void arg)
				{

				for (uint32_t fibnum = 0; fibnum < rt_numfibs; fibnum++) {
				/* Do we want some specific family? */
				if (family != AF_UNSPEC) {
				rib_walk_del(fibnum, family, filter_f, arg, 0);
				continue;
				}

				for (int i = 1; i <= AF_MAX; i++)
				rib_walk_del(fibnum, i, filter_f, arg, 0);
				}
				}


	/*			/*
	* Wrapper for the control plane functions for performing af-agnostic			* Wrapper for the control plane functions for performing af-agnostic
	* lookups.			* lookups.
	* @fibnum: fib to perform the lookup.			* @fibnum: fib to perform the lookup.
	* @dst: sockaddr with family and addr filled in. IPv6 addresses needs to be in			* @dst: sockaddr with family and addr filled in. IPv6 addresses needs to be in
	* deembedded from.			* deembedded from.
	* @flags: fib(9) flags.			* @flags: fib(9) flags.
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