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Eattr flags (originated and fresh) get their own struct fields

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Maria Matejka 2022-03-14 10:06:44 +01:00
parent af8568a870
commit 63cf5d5d8c
5 changed files with 19 additions and 10 deletions
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8
filter/f-inst.c
View file

@ -737,7 +737,9 @@
l->count = 1; l->count = 1;
l->attrs[0].id = da.ea_code; l->attrs[0].id = da.ea_code;
l->attrs[0].flags = 0; l->attrs[0].flags = 0;
l->attrs[0].type = da.type | EAF_ORIGINATED | EAF_FRESH; l->attrs[0].type = da.type;
l->attrs[0].originated = 1;
l->attrs[0].fresh = 1;
switch (da.type) { switch (da.type) {
case EAF_TYPE_INT: case EAF_TYPE_INT:
@ -800,7 +802,9 @@
l->count = 1; l->count = 1;
l->attrs[0].id = da.ea_code; l->attrs[0].id = da.ea_code;
l->attrs[0].flags = 0; l->attrs[0].flags = 0;
l->attrs[0].type = EAF_TYPE_UNDEF | EAF_ORIGINATED | EAF_FRESH; l->attrs[0].type = EAF_TYPE_UNDEF;
l->attrs[0].originated = 1;
l->attrs[0].fresh = 1;
l->attrs[0].u.data = 0; l->attrs[0].u.data = 0;
f_rta_cow(fs); f_rta_cow(fs);

6
nest/route.h
View file

@ -502,7 +502,9 @@ static inline int rte_is_reachable(rte *r)
typedef struct eattr { typedef struct eattr {
word id; /* EA_CODE(PROTOCOL_..., protocol-dependent ID) */ word id; /* EA_CODE(PROTOCOL_..., protocol-dependent ID) */
byte flags; /* Protocol-dependent flags */ byte flags; /* Protocol-dependent flags */
byte type; /* Attribute type and several flags (EAF_...) */ byte type:5; /* Attribute type */
byte originated:1; /* The attribute has originated locally */
byte fresh:1; /* An uncached attribute (e.g. modified in export filter) */
union { union {
uintptr_t data; uintptr_t data;
const struct adata *ptr; /* Attribute data elsewhere */ const struct adata *ptr; /* Attribute data elsewhere */
@ -541,8 +543,6 @@ const char *ea_custom_name(uint ea);
#define EAF_TYPE_UNDEF 0x1f /* `force undefined' entry */ #define EAF_TYPE_UNDEF 0x1f /* `force undefined' entry */
#define EAF_EMBEDDED 0x01 /* Data stored in eattr.u.data (part of type spec) */ #define EAF_EMBEDDED 0x01 /* Data stored in eattr.u.data (part of type spec) */
#define EAF_VAR_LENGTH 0x02 /* Attribute length is variable (part of type spec) */ #define EAF_VAR_LENGTH 0x02 /* Attribute length is variable (part of type spec) */
#define EAF_ORIGINATED 0x20 /* The attribute has originated locally */
#define EAF_FRESH 0x40 /* An uncached attribute (e.g. modified in export filter) */
typedef struct adata { typedef struct adata {
uint length; /* Length of data */ uint length; /* Length of data */

9
nest/rt-attr.c
View file

@ -623,7 +623,10 @@ ea_do_prune(ea_list *e)
*d = *s0; *d = *s0;
/* Preserve info whether it originated locally */ /* Preserve info whether it originated locally */
d->type = (d->type & ~(EAF_ORIGINATED|EAF_FRESH)) | (s[-1].type & EAF_ORIGINATED); d->originated = s[-1].originated;
/* Not fresh any more, we prefer surstroemming */
d->fresh = 0;
/* Next destination */ /* Next destination */
d++; d++;
@ -737,6 +740,8 @@ ea_same(ea_list *x, ea_list *y)
if (a->id != b->id || if (a->id != b->id ||
a->flags != b->flags || a->flags != b->flags ||
a->type != b->type || a->type != b->type ||
a->originated != b->originated ||
a->fresh != b->fresh ||
((a->type & EAF_EMBEDDED) ? a->u.data != b->u.data : !adata_same(a->u.ptr, b->u.ptr))) ((a->type & EAF_EMBEDDED) ? a->u.data != b->u.data : !adata_same(a->u.ptr, b->u.ptr)))
return 0; return 0;
} }
@ -1004,7 +1009,7 @@ ea_dump(ea_list *e)
eattr *a = &e->attrs[i]; eattr *a = &e->attrs[i];
debug(" %02x:%02x.%02x", EA_PROTO(a->id), EA_ID(a->id), a->flags); debug(" %02x:%02x.%02x", EA_PROTO(a->id), EA_ID(a->id), a->flags);
debug("=%c", "?iO?I?P???S?????" [a->type & EAF_TYPE_MASK]); debug("=%c", "?iO?I?P???S?????" [a->type & EAF_TYPE_MASK]);
if (a->type & EAF_ORIGINATED) if (a->originated)
debug("o"); debug("o");
if (a->type & EAF_EMBEDDED) if (a->type & EAF_EMBEDDED)
debug(":%08x", a->u.data); debug(":%08x", a->u.data);

4
proto/bgp/attrs.c
View file

@ -1153,7 +1153,7 @@ bgp_export_attr(struct bgp_export_state *s, eattr *a, ea_list *to)
a->flags = (a->flags & BAF_PARTIAL) | desc->flags; a->flags = (a->flags & BAF_PARTIAL) | desc->flags;
/* Set partial bit if new opt-trans attribute is attached to non-local route */ /* Set partial bit if new opt-trans attribute is attached to non-local route */
if ((s->src != NULL) && (a->type & EAF_ORIGINATED) && if ((s->src != NULL) && (a->originated) &&
(a->flags & BAF_OPTIONAL) && (a->flags & BAF_TRANSITIVE)) (a->flags & BAF_OPTIONAL) && (a->flags & BAF_TRANSITIVE))
a->flags |= BAF_PARTIAL; a->flags |= BAF_PARTIAL;
@ -1776,7 +1776,7 @@ bgp_update_attrs(struct bgp_proto *p, struct bgp_channel *c, rte *e, ea_list *at
/* MULTI_EXIT_DESC attribute - accept only if set in export filter */ /* MULTI_EXIT_DESC attribute - accept only if set in export filter */
a = bgp_find_attr(attrs0, BA_MULTI_EXIT_DISC); a = bgp_find_attr(attrs0, BA_MULTI_EXIT_DISC);
if (a && !(a->type & EAF_FRESH)) if (a && !(a->fresh))
bgp_unset_attr(&attrs, pool, BA_MULTI_EXIT_DISC); bgp_unset_attr(&attrs, pool, BA_MULTI_EXIT_DISC);
} }

2
proto/bgp/packets.c
View file

@ -1062,7 +1062,7 @@ bgp_use_next_hop(struct bgp_export_state *s, eattr *a)
return 1; return 1;
/* Keep it when explicitly set in export filter */ /* Keep it when explicitly set in export filter */
if (a->type & EAF_FRESH) if (a->fresh)
return 1; return 1;
/* Check for non-matching AF */ /* Check for non-matching AF */