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OSPF: Improved handling of tmpattrs

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Keep track of whether OSPF tmpattrs are actually defined for given route
(using flags in rte->pflags). That makes them behave more like real
eattrs so a protocol can define just a subset of them or they can be
undefined by filters.

Do not set ospf_metric2 for other than type 2 external OSPF routes and do
not set ospf_tag for non-external OSPF routes. That also fixes a bug
where internal/inter-area route propagated from one OSPF instance to
another is initiated with infinity ospf_metric2.

Thanks to Yaroslav Dronskii for the bugreport.
This commit is contained in:
Ondrej Zajicek (work)
2019-03-06 18:14:12 +01:00
parent b9deced219
commit 9aa77fcceb
4 changed files with 61 additions and 43 deletions
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3
nest/route.h
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@@ -308,6 +308,8 @@ void rte_free(rte *);
rte *rte_do_cow(rte *);
static inline rte * rte_cow(rte *r) { return (r->flags & REF_COW) ? rte_do_cow(r) : r; }
rte *rte_cow_rta(rte *r, linpool *lp);
void rte_make_tmp_attr(struct rte *r, struct ea_list *e, uint id, uint type, u32 val);
uint rte_store_tmp_attr(struct rte *r, uint id);
void rt_dump(rtable *);
void rt_dump_all(void);
int rt_feed_channel(struct channel *c);
@@ -481,6 +483,7 @@ typedef struct eattr {
#define EA_CODE(proto,id) (((proto) << 8) | (id))
#define EA_ID(ea) ((ea) & 0xff)
#define EA_PROTO(ea) ((ea) >> 8)
#define EA_ID_FLAG(ea) (1 << EA_ID(ea))
#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT)
#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT)
#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT)