diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/attrs.h | 2 | ||||
| -rw-r--r-- | lib/route.h | 65 | ||||
| -rw-r--r-- | lib/type.h | 1 |
3 files changed, 51 insertions, 17 deletions
diff --git a/lib/attrs.h b/lib/attrs.h index d2638f3f..79b7b14a 100644 --- a/lib/attrs.h +++ b/lib/attrs.h @@ -37,7 +37,9 @@ lp_store_adata(struct linpool *pool, const void *buf, uint len) return ad; } +#define tmp_alloc_adata(len) lp_alloc_adata(tmp_linpool, len) #define tmp_store_adata(buf, len) lp_store_adata(tmp_linpool, buf, len) +#define tmp_copy_adata(ad) tmp_store_adata((ad)->data, (ad)->length) static inline int adata_same(const struct adata *a, const struct adata *b) { return (a->length == b->length && !memcmp(a->data, b->data, a->length)); } diff --git a/lib/route.h b/lib/route.h index 5423ada3..29a78e90 100644 --- a/lib/route.h +++ b/lib/route.h @@ -67,13 +67,18 @@ void rt_prune_sources(void); struct nexthop { ip_addr gw; /* Next hop */ struct iface *iface; /* Outgoing interface */ - struct nexthop *next; byte flags; byte weight; byte labels; /* Number of all labels */ u32 label[0]; }; +/* For packing one into eattrs */ +struct nexthop_adata { + struct adata ad; + struct nexthop nh; +}; + #define RNF_ONLINK 0x1 /* Gateway is onlink regardless of IP ranges */ @@ -85,7 +90,6 @@ typedef struct rta { struct hostentry *hostentry; /* Hostentry for recursive next-hops */ u16 cached:1; /* Are attributes cached? */ u16 dest:4; /* Route destination type (RTD_...) */ - struct nexthop nh; /* Next hop */ } rta; #define RTS_STATIC 1 /* Normal static route */ @@ -286,9 +290,22 @@ ea_set_attr_u32(ea_list **to, const struct ea_class *def, uint flags, u64 data) { ea_set_attr(to, EA_LITERAL_EMBEDDED(def, flags, data)); } static inline void -ea_set_attr_data(ea_list **to, const struct ea_class *def, uint flags, void *data, uint len) +ea_set_attr_data(ea_list **to, const struct ea_class *def, uint flags, const void *data, uint len) { ea_set_attr(to, EA_LITERAL_STORE_ADATA(def, flags, data, len)); } +static inline void +ea_copy_attr(ea_list **to, ea_list *from, const struct ea_class *def) +{ + eattr *e = ea_find_by_class(from, def); + if (e) + if (e->type & EAF_EMBEDDED) + ea_set_attr_u32(to, def, e->flags, e->u.data); + else + ea_set_attr_data(to, def, e->flags, e->u.ptr->data, e->u.ptr->length); + else + ea_unset_attr(to, 0, def); +} + /* * Common route attributes */ @@ -317,25 +334,39 @@ static inline u32 rt_get_source_attr(rte *rt) * to add additional labels to the resolved nexthop */ extern struct ea_class ea_mpls_labels; +/* Next hop: For now, stored as adata */ +extern struct ea_class ea_gen_nexthop; + /* Next hop structures */ -#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK) +#define NEXTHOP_ALIGNMENT (_Alignof(struct nexthop)) +#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK) +#define NEXTHOP_SIZE(_nh) NEXTHOP_SIZE_CNT(((_nh)->labels)) +#define NEXTHOP_SIZE_CNT(cnt) BIRD_ALIGN((sizeof(struct nexthop) + sizeof(u32) * (cnt)), NEXTHOP_ALIGNMENT) +#define nexthop_size(nh) NEXTHOP_SIZE((nh)) + +#define NEXTHOP_NEXT(_nh) ((void *) (_nh) + NEXTHOP_SIZE(_nh)) +#define NEXTHOP_END(_nhad) ((_nhad)->ad.data + (_nhad)->ad.length) +#define NEXTHOP_VALID(_nh, _nhad) ((void *) (_nh) < (void *) NEXTHOP_END(_nhad)) +#define NEXTHOP_ONE(_nhad) (NEXTHOP_NEXT(&(_nhad)->nh) == NEXTHOP_END(_nhad)) + +#define NEXTHOP_WALK(_iter, _nhad) for ( \ + struct nexthop *_iter = &(_nhad)->nh; \ + (void *) _iter < (void *) NEXTHOP_END(_nhad); \ + _iter = NEXTHOP_NEXT(_iter)) + + +static inline int nexthop_same(struct nexthop_adata *x, struct nexthop_adata *y) +{ return adata_same(&x->ad, &y->ad); } +struct nexthop_adata *nexthop_merge(struct nexthop_adata *x, struct nexthop_adata *y, int max, linpool *lp); +struct nexthop_adata *nexthop_sort(struct nexthop_adata *x, linpool *lp); +int nexthop_is_sorted(struct nexthop_adata *x); + -static inline size_t nexthop_size(const struct nexthop *nh) -{ return sizeof(struct nexthop) + sizeof(u32)*nh->labels; } -int nexthop__same(struct nexthop *x, struct nexthop *y); /* Compare multipath nexthops */ -static inline int nexthop_same(struct nexthop *x, struct nexthop *y) -{ return (x == y) || nexthop__same(x, y); } -struct nexthop *nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp); -struct nexthop *nexthop_sort(struct nexthop *x); -static inline void nexthop_link(struct rta *a, struct nexthop *from) -{ memcpy(&a->nh, from, nexthop_size(from)); } -void nexthop_insert(struct nexthop **n, struct nexthop *y); -int nexthop_is_sorted(struct nexthop *x); void rta_init(void); -static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; } -#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK) +#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; } @@ -52,6 +52,7 @@ enum btype { /* Something but inaccessible. */ T_OPAQUE = 0x02, /* Opaque byte string (not filterable) */ T_IFACE = 0x0c, /* Pointer to an interface (inside adata) */ + T_NEXTHOP_LIST = 0x2c, /* The whole nexthop block */ /* Types shared with eattrs */ T_INT = 0x01, /* 32-bit unsigned integer number */ |