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Merge commit '938742decc6e1d6d3a0375dd012b75172e747bbc' into haugesund

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This commit is contained in:
Maria Matejka
2022-06-08 15:31:28 +02:00
parent cae5979871 938742decc
commit 4364ee9b6f
27 changed files with 337 additions and 503 deletions
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52
lib/route.h
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@@ -18,7 +18,7 @@ struct cli;
typedef struct rte {
struct rta *attrs; /* Attributes of this route */
struct ea_list *attrs; /* Attributes of this route */
const net_addr *net; /* Network this RTE belongs to */
struct rte_src *src; /* Route source that created the route */
struct rt_import_hook *sender; /* Import hook used to send the route to the routing table */
@@ -92,14 +92,6 @@ struct nexthop_adata {
#define RNF_ONLINK 0x1 /* Gateway is onlink regardless of IP ranges */
typedef struct rta {
struct rta *next, **pprev; /* Hash chain */
u32 uc; /* Use count */
u32 hash_key; /* Hash over important fields */
struct ea_list *eattrs; /* Extended Attribute chain */
u16 cached:1; /* Are attributes cached? */
} rta;
#define RTS_STATIC 1 /* Normal static route */
#define RTS_INHERIT 2 /* Route inherited from kernel */
#define RTS_DEVICE 3 /* Device route */
@@ -155,6 +147,10 @@ typedef struct eattr {
#define EA_BIT_GET(ea) ((ea) >> 24)
typedef struct ea_list {
struct ea_list *next_hash; /* Next in hash chain */
struct ea_list **pprev_hash; /* Previous in hash chain */
u32 uc; /* Use count */
u32 hash_key; /* List hash */
struct ea_list *next; /* In case we have an override list */
byte flags; /* Flags: EALF_... */
byte rfu;
@@ -164,7 +160,7 @@ typedef struct ea_list {
#define EALF_SORTED 1 /* Attributes are sorted by code */
#define EALF_BISECT 2 /* Use interval bisection for searching */
#define EALF_CACHED 4 /* Attributes belonging to cached rta */
#define EALF_CACHED 4 /* List is cached */
struct ea_class {
#define EA_CLASS_INSIDE \
@@ -319,7 +315,7 @@ ea_copy_attr(ea_list **to, ea_list *from, const struct ea_class *def)
/* Preference: first-order comparison */
extern struct ea_class ea_gen_preference;
static inline u32 rt_get_preference(rte *rt)
{ return ea_get_int(rt->attrs->eattrs, &ea_gen_preference, 0); }
{ return ea_get_int(rt->attrs, &ea_gen_preference, 0); }
/* IGP metric: second-order comparison */
extern struct ea_class ea_gen_igp_metric;
@@ -334,7 +330,7 @@ extern struct ea_class ea_gen_from;
* To be superseded in a near future by something more informative. */
extern struct ea_class ea_gen_source;
static inline u32 rt_get_source_attr(const rte *rt)
{ return ea_get_int(rt->attrs->eattrs, &ea_gen_source, 0); }
{ return ea_get_int(rt->attrs, &ea_gen_source, 0); }
/* Flowspec validation result */
enum flowspec_valid {
@@ -350,7 +346,7 @@ static inline const char *flowspec_valid_name(enum flowspec_valid v)
extern struct ea_class ea_gen_flowspec_valid;
static inline enum flowspec_valid rt_get_flowspec_valid(rte *rt)
{ return ea_get_int(rt->attrs->eattrs, &ea_gen_flowspec_valid, FLOWSPEC_UNKNOWN); }
{ return ea_get_int(rt->attrs, &ea_gen_flowspec_valid, FLOWSPEC_UNKNOWN); }
/* Next hop: For now, stored as adata */
extern struct ea_class ea_gen_nexthop;
@@ -391,7 +387,7 @@ int nexthop_is_sorted(struct nexthop_adata *x);
/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */
static inline int rte_is_reachable(rte *r)
{
eattr *nhea = ea_find(r->attrs->eattrs, &ea_gen_nexthop);
eattr *nhea = ea_find(r->attrs, &ea_gen_nexthop);
if (!nhea)
return 0;
@@ -413,21 +409,23 @@ static inline int nhea_dest(eattr *nhea)
static inline int rte_dest(const rte *r)
{
return nhea_dest(ea_find(r->attrs->eattrs, &ea_gen_nexthop));
return nhea_dest(ea_find(r->attrs, &ea_gen_nexthop));
}
void rta_init(void);
#define rta_size(...) (sizeof(rta))
#define RTA_MAX_SIZE (sizeof(rta))
rta *rta_lookup(rta *); /* Get rta equivalent to this one, uc++ */
static inline int rta_is_cached(rta *r) { return r->cached; }
static inline rta *rta_clone(rta *r) { r->uc++; return r; }
void rta__free(rta *r);
static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); }
rta *rta_do_cow(rta *o, linpool *lp);
static inline rta * rta_cow(rta *r, linpool *lp) { return rta_is_cached(r) ? rta_do_cow(r, lp) : r; }
void rta_dump(rta *);
void rta_dump_all(void);
void rta_show(struct cli *, rta *);
ea_list *ea_lookup(ea_list *); /* Get a cached (and normalized) variant of this attribute list */
static inline int ea_is_cached(ea_list *r) { return r->flags & EALF_CACHED; }
static inline ea_list *ea_clone(ea_list *r) { r->uc++; return r; }
void ea__free(ea_list *r);
static inline void ea_free(ea_list *r) { if (r && !--r->uc) ea__free(r); }
void ea_dump(ea_list *);
void ea_dump_all(void);
void ea_show_list(struct cli *, ea_list *);
#define rta_lookup ea_lookup
#define rta_is_cached ea_is_cached
#define rta_clone ea_clone
#define rta_free ea_free
#endif