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Nest: Update handling of temporary attributes

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The temporary atttributes are no longer removed by ea_do_prune(), but
they are undefined by store_tmp_attrs() protocol hooks. This fixes
several bugs where temporary attributes were removed when they should
not or not removed when they should be. The flag EAF_TEMP is no longer
needed and was removed.

Update all protocol make_tmp_attrs() / store_tmp_attrs() hooks to use
helper functions and to handle unset attributes properly.

Also fix some related bugs like improper handling of empty eattr list.
This commit is contained in:
Ondrej Zajicek (work) 2019-03-14 17:22:22 +01:00
parent 9aa77fcceb
commit 875cc073b0
11 changed files with 229 additions and 160 deletions
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2
filter/config.Y
View File

@ -1045,7 +1045,7 @@ cmd:
}
| UNSET '(' rtadot dynamic_attr ')' ';' {
$$ = f_new_inst_da(FI_EA_SET, $4);
$$->aux = EAF_TYPE_UNDEF | EAF_TEMP;
$$->aux = EAF_TYPE_UNDEF;
$$->a1.p = NULL;
}
| break_command print_list ';' { $$ = f_new_inst(FI_PRINT_AND_DIE); $$->a1.p = $2; $$->a2.i = $1; }

20
nest/protocol.h
View File

@ -194,8 +194,8 @@ struct proto {
* ifa_notify Notify protocol about interface address changes.
* rt_notify Notify protocol about routing table updates.
* neigh_notify Notify protocol about neighbor cache events.
* make_tmp_attrs Construct ea_list from private attrs stored in rta.
* store_tmp_attrs Store private attrs back to rta. The route MUST NOT be cached.
* make_tmp_attrs Add attributes to rta from from private attrs stored in rte. The route and rta MUST NOT be cached.
* store_tmp_attrs Store private attrs back to rte and undef added attributes. The route and rta MUST NOT be cached.
* preexport Called as the first step of the route exporting process.
* It can construct a new rte, add private attributes and
* decide whether the route shall be exported: 1=yes, -1=no,
@ -211,8 +211,8 @@ struct proto {
void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a);
void (*rt_notify)(struct proto *, struct channel *, struct network *net, struct rte *new, struct rte *old);
void (*neigh_notify)(struct neighbor *neigh);
struct ea_list *(*make_tmp_attrs)(struct rte *rt, struct linpool *pool);
void (*store_tmp_attrs)(struct rte *rt);
void (*make_tmp_attrs)(struct rte *rt, struct linpool *pool);
void (*store_tmp_attrs)(struct rte *rt, struct linpool *pool);
int (*preexport)(struct proto *, struct rte **rt, struct linpool *pool);
void (*reload_routes)(struct channel *);
void (*feed_begin)(struct channel *, int initial);
@ -297,18 +297,6 @@ proto_get_router_id(struct proto_config *pc)
return pc->router_id ? pc->router_id : pc->global->router_id;
}
static inline void
rte_make_tmp_attrs(struct rte **rt, struct linpool *pool)
{
struct ea_list *(*mta)(struct rte *rt, struct linpool *pool);
mta = (*rt)->attrs->src->proto->make_tmp_attrs;
if (!mta) return;
*rt = rte_cow_rta(*rt, pool);
struct ea_list *ea = mta(*rt, pool);
ea->next = (*rt)->attrs->eattrs;
(*rt)->attrs->eattrs = ea;
}
extern pool *proto_pool;
extern list proto_list;

10
nest/route.h
View File

@ -308,8 +308,10 @@ 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 rte_init_tmp_attrs(struct rte *r, linpool *lp, uint max);
void rte_make_tmp_attr(struct rte *r, uint id, uint type, uintptr_t val);
void rte_make_tmp_attrs(struct rte **r, struct linpool *pool, struct rta **old_attrs);
uintptr_t 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);
@ -512,7 +514,6 @@ const char *ea_custom_name(uint ea);
#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) */
#define EAF_TEMP 0x80 /* A temporary attribute (the one stored in the tmp attr list) */
typedef struct adata {
uint length; /* Length of data */
@ -542,6 +543,7 @@ 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_TEMP 8 /* Temporary ea_list added by make_tmp_attrs hooks */
struct rte_src *rt_find_source(struct proto *p, u32 id);
struct rte_src *rt_get_source(struct proto *p, u32 id);
@ -574,6 +576,8 @@ void ea_format_bitfield(struct eattr *a, byte *buf, int bufsize, const char **na
ea = t; \
} \
ea_sort(ea); \
if (ea->count == 0) \
ea = NULL; \
} while(0) \
static inline eattr *

10
nest/rt-attr.c
View File

@ -571,8 +571,8 @@ ea_do_sort(ea_list *e)
}
/**
* In place discard duplicates, undefs and temporary attributes in sorted
* ea_list. We use stable sort for this reason.
* In place discard duplicates and undefs in sorted ea_list. We use stable sort
* for this reason.
**/
static inline void
ea_do_prune(ea_list *e)
@ -596,10 +596,6 @@ ea_do_prune(ea_list *e)
if ((s0->type & EAF_TYPE_MASK) == EAF_TYPE_UNDEF)
continue;
/* Drop temporary attributes */
if (s0->type & EAF_TEMP)
continue;
/* Copy the newest version to destination */
*d = *s0;
@ -979,8 +975,6 @@ ea_dump(ea_list *e)
{
eattr *a = &e->attrs[i];
debug(" %02x:%02x.%02x", EA_PROTO(a->id), EA_ID(a->id), a->flags);
if (a->type & EAF_TEMP)
debug("T");
debug("=%c", "?iO?I?P???S?????" [a->type & EAF_TYPE_MASK]);
if (a->type & EAF_ORIGINATED)
debug("o");

7
nest/rt-show.c
View File

@ -45,10 +45,11 @@ rt_show_rte(struct cli *c, byte *ia, rte *e, struct rt_show_data *d)
else
from[0] = 0;
get_route_info = a->src->proto->proto->get_route_info;
/* Need to normalize the extended attributes */
if ((get_route_info || d->verbose) && !rta_is_cached(a))
if (d->verbose && !rta_is_cached(a) && a->eattrs)
ea_normalize(a->eattrs);
get_route_info = a->src->proto->proto->get_route_info;
if (get_route_info)
get_route_info(e, info);
else
@ -114,7 +115,7 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
continue;
ee = e;
rte_make_tmp_attrs(&e, c->show_pool);
rte_make_tmp_attrs(&e, c->show_pool, NULL);
/* Export channel is down, do not try to export routes to it */
if (ec && (ec->export_state == ES_DOWN))

176
nest/rt-table.c
View File

@ -326,29 +326,90 @@ rte_cow_rta(rte *r, linpool *lp)
}
/* Note that rte_make_tmp_attr() requires free eattr in ea_list */
/**
* rte_init_tmp_attrs - initialize temporary ea_list for route
* @r: route entry to be modified
* @lp: linpool from which to allocate attributes
* @max: maximum number of added temporary attribus
*
* This function is supposed to be called from make_tmp_attrs() and
* store_tmp_attrs() hooks before rte_make_tmp_attr() / rte_store_tmp_attr()
* functions. It allocates &ea_list with length for @max items for temporary
* attributes and puts it on top of eattrs stack.
*/
void
rte_make_tmp_attr(rte *r, ea_list *e, uint id, uint type, u32 val)
rte_init_tmp_attrs(rte *r, linpool *lp, uint max)
{
struct ea_list *e = lp_alloc(lp, sizeof(struct ea_list) + max * sizeof(eattr));
e->next = r->attrs->eattrs;
e->flags = EALF_SORTED | EALF_TEMP;
e->count = 0;
r->attrs->eattrs = e;
}
/**
* rte_make_tmp_attr - make temporary eattr from private route fields
* @r: route entry to be modified
* @id: attribute ID
* @type: attribute type
* @val: attribute value (u32 or adata ptr)
*
* This function is supposed to be called from make_tmp_attrs() hook for
* each temporary attribute, after temporary &ea_list was initialized by
* rte_init_tmp_attrs(). It checks whether temporary attribute is supposed to
* be defined (based on route pflags) and if so then it fills &eattr field in
* preallocated temporary &ea_list on top of route @r eattrs stack.
*
* Note that it may require free &eattr in temporary &ea_list, so it must not be
* called more times than @max argument of rte_init_tmp_attrs().
*/
void
rte_make_tmp_attr(rte *r, uint id, uint type, uintptr_t val)
{
if (r->pflags & EA_ID_FLAG(id))
{
ea_list *e = r->attrs->eattrs;
eattr *a = &e->attrs[e->count++];
a->id = id;
a->type = type | EAF_TEMP;
a->type = type;
a->flags = 0;
a->u.data = val;
if (type & EAF_EMBEDDED)
a->u.data = (u32) val;
else
a->u.ptr = (struct adata *) val;
}
}
/* Note that rte has to be writable */
uint
/**
* rte_store_tmp_attr - store temporary eattr to private route fields
* @r: route entry to be modified
* @id: attribute ID
*
* This function is supposed to be called from store_tmp_attrs() hook for
* each temporary attribute, after temporary &ea_list was initialized by
* rte_init_tmp_attrs(). It checks whether temporary attribute is defined in
* route @r eattrs stack, updates route pflags accordingly, undefines it by
* filling &eattr field in preallocated temporary &ea_list on top of the eattrs
* stack, and returns the value. Caller is supposed to store it in the
* appropriate private field.
*
* Note that it may require free &eattr in temporary &ea_list, so it must not be
* called more times than @max argument of rte_init_tmp_attrs()
*/
uintptr_t
rte_store_tmp_attr(rte *r, uint id)
{
eattr *a;
if (a = ea_find(r->attrs->eattrs, id))
ea_list *e = r->attrs->eattrs;
eattr *a = ea_find(e->next, id);
if (a)
{
e->attrs[e->count++] = (struct eattr) { .id = id, .type = EAF_TYPE_UNDEF };
r->pflags |= EA_ID_FLAG(id);
return a->u.data;
return (a->type & EAF_EMBEDDED) ? a->u.data : (uintptr_t) a->u.ptr;
}
else
{
@ -357,6 +418,82 @@ rte_store_tmp_attr(rte *r, uint id)
}
}
/**
* rte_make_tmp_attrs - prepare route by adding all relevant temporary route attributes
* @r: route entry to be modified (may be replaced if COW)
* @lp: linpool from which to allocate attributes
* @old_attrs: temporary ref to old &rta (may be NULL)
*
* This function expands privately stored protocol-dependent route attributes
* to a uniform &eattr / &ea_list representation. It is essentially a wrapper
* around protocol make_tmp_attrs() hook, which does some additional work like
* ensuring that route @r is writable.
*
* The route @r may be read-only (with %REF_COW flag), in that case rw copy is
* obtained by rte_cow() and @r is replaced. If @rte is originally rw, it may be
* directly modified (and it is never copied).
*
* If the @old_attrs ptr is supplied, the function obtains another reference of
* old cached &rta, that is necessary in some cases (see rte_cow_rta() for
* details). It is freed by rte_store_tmp_attrs(), or manually by rta_free().
*
* Generally, if caller ensures that @r is read-only (e.g. in route export) then
* it may ignore @old_attrs (and set it to NULL), but must handle replacement of
* @r. If caller ensures that @r is writable (e.g. in route import) then it may
* ignore replacement of @r, but it must handle @old_attrs.
*/
void
rte_make_tmp_attrs(rte **r, linpool *lp, rta **old_attrs)
{
void (*make_tmp_attrs)(rte *r, linpool *lp);
make_tmp_attrs = (*r)->attrs->src->proto->make_tmp_attrs;
if (!make_tmp_attrs)
return;
/* We may need to keep ref to old attributes, will be freed in rte_store_tmp_attrs() */
if (old_attrs)
*old_attrs = rta_is_cached((*r)->attrs) ? rta_clone((*r)->attrs) : NULL;
*r = rte_cow_rta(*r, lp);
make_tmp_attrs(*r, lp);
}
/**
* rte_store_tmp_attrs - store temporary route attributes back to private route fields
* @r: route entry to be modified
* @lp: linpool from which to allocate attributes
* @old_attrs: temporary ref to old &rta
*
* This function stores temporary route attributes that were expanded by
* rte_make_tmp_attrs() back to private route fields and also undefines them.
* It is essentially a wrapper around protocol store_tmp_attrs() hook, which
* does some additional work like shortcut if there is no change and cleanup
* of @old_attrs reference obtained by rte_make_tmp_attrs().
*/
static void
rte_store_tmp_attrs(rte *r, linpool *lp, rta *old_attrs)
{
void (*store_tmp_attrs)(rte *rt, linpool *lp);
store_tmp_attrs = r->attrs->src->proto->store_tmp_attrs;
if (!store_tmp_attrs)
return;
ASSERT(!rta_is_cached(r->attrs));
/* If there is no new ea_list, we just skip the temporary ea_list */
ea_list *ea = r->attrs->eattrs;
if (ea && (ea->flags & EALF_TEMP))
r->attrs->eattrs = ea->next;
else
store_tmp_attrs(r, lp);
/* Free ref we got in rte_make_tmp_attrs(), have to do rta_lookup() first */
r->attrs = rta_lookup(r->attrs);
rta_free(old_attrs);
}
static int /* Actually better or at least as good as */
rte_better(rte *new, rte *old)
@ -456,7 +593,7 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
goto accept;
}
rte_make_tmp_attrs(&rt, pool);
rte_make_tmp_attrs(&rt, pool, NULL);
v = filter && ((filter == FILTER_REJECT) ||
(f_run(filter, &rt, pool,
@ -1436,12 +1573,11 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
/* new is a private copy, i could modify it */
new->flags |= REF_FILTERED;
}
else
else if (filter)
{
rte_make_tmp_attrs(&new, rte_update_pool);
if (filter && (filter != FILTER_REJECT))
{
ea_list *oldea = new->attrs->eattrs;
rta *old_attrs;
rte_make_tmp_attrs(&new, rte_update_pool, &old_attrs);
int fr = f_run(filter, &new, rte_update_pool, 0);
if (fr > F_ACCEPT)
{
@ -1449,13 +1585,15 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
rte_trace_in(D_FILTERS, p, new, "filtered out");
if (! c->in_keep_filtered)
{
rta_free(old_attrs);
goto drop;
}
new->flags |= REF_FILTERED;
}
if (new->attrs->eattrs != oldea && src->proto->store_tmp_attrs)
src->proto->store_tmp_attrs(new);
}
rte_store_tmp_attrs(new, rte_update_pool, old_attrs);
}
if (!rta_is_cached(new->attrs)) /* Need to copy attributes */
new->attrs = rta_lookup(new->attrs);
@ -1552,7 +1690,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter)
int v = p->preexport ? p->preexport(p, &rt, rte_update_pool) : 0;
if (v == RIC_PROCESS)
{
rte_make_tmp_attrs(&rt, rte_update_pool);
rte_make_tmp_attrs(&rt, rte_update_pool, NULL);
v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT);
}

45
proto/babel/babel.c
View File

@ -645,7 +645,7 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
rte->u.babel.seqno = r->seqno;
rte->u.babel.metric = r->metric;
rte->u.babel.router_id = r->router_id;
rte->pflags = 0;
rte->pflags = EA_ID_FLAG(EA_BABEL_METRIC) | EA_ID_FLAG(EA_BABEL_ROUTER_ID);
e->unreachable = 0;
rte_update2(c, e->n.addr, rte, p->p.main_source);
@ -2077,32 +2077,6 @@ babel_kick_timer(struct babel_proto *p)
}
static struct ea_list *
babel_prepare_attrs(struct linpool *pool, ea_list *next, uint metric, u64 router_id)
{
struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2*sizeof(eattr));
struct adata *rid = lp_alloc(pool, sizeof(struct adata) + sizeof(u64));
rid->length = sizeof(u64);
memcpy(&rid->data, &router_id, sizeof(u64));
l->next = next;
l->flags = EALF_SORTED;
l->count = 2;
l->attrs[0].id = EA_BABEL_METRIC;
l->attrs[0].flags = 0;
l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[0].u.data = metric;
l->attrs[1].id = EA_BABEL_ROUTER_ID;
l->attrs[1].flags = 0;
l->attrs[1].type = EAF_TYPE_OPAQUE | EAF_TEMP;
l->attrs[1].u.ptr = rid;
return l;
}
static int
babel_preexport(struct proto *P, struct rte **new, struct linpool *pool UNUSED)
{
@ -2115,16 +2089,25 @@ babel_preexport(struct proto *P, struct rte **new, struct linpool *pool UNUSED)
return 0;
}
static struct ea_list *
static void
babel_make_tmp_attrs(struct rte *rt, struct linpool *pool)
{
return babel_prepare_attrs(pool, NULL, rt->u.babel.metric, rt->u.babel.router_id);
struct adata *id = lp_alloc_adata(pool, sizeof(u64));
memcpy(id->data, &rt->u.babel.router_id, sizeof(u64));
rte_init_tmp_attrs(rt, pool, 2);
rte_make_tmp_attr(rt, EA_BABEL_METRIC, EAF_TYPE_INT, rt->u.babel.metric);
rte_make_tmp_attr(rt, EA_BABEL_ROUTER_ID, EAF_TYPE_OPAQUE, (uintptr_t) id);
}
static void
babel_store_tmp_attrs(struct rte *rt)
babel_store_tmp_attrs(struct rte *rt, struct linpool *pool)
{
rt->u.babel.metric = ea_get_int(rt->attrs->eattrs, EA_BABEL_METRIC, 0);
rte_init_tmp_attrs(rt, pool, 2);
rt->u.babel.metric = rte_store_tmp_attr(rt, EA_BABEL_METRIC);
/* EA_BABEL_ROUTER_ID is read-only, we do not really save the value */
rte_store_tmp_attr(rt, EA_BABEL_ROUTER_ID);
}
/*

2
proto/mrt/mrt.c
View File

@ -496,7 +496,7 @@ mrt_rib_table_dump(struct mrt_table_dump_state *s, net *n, int add_path)
continue;
}
rte_make_tmp_attrs(&rt, s->linpool);
rte_make_tmp_attrs(&rt, s->linpool, NULL);
if (f_run(s->filter, &rt, s->linpool, 0) <= F_ACCEPT)
mrt_rib_table_entry(s, rt);

26
proto/ospf/ospf.c
View File

@ -106,8 +106,8 @@
#include "ospf.h"
static int ospf_preexport(struct proto *P, rte **new, struct linpool *pool);
static struct ea_list *ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
static void ospf_store_tmp_attrs(struct rte *rt);
static void ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
static void ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool);
static void ospf_reload_routes(struct channel *C);
static int ospf_rte_better(struct rte *new, struct rte *old);
static int ospf_rte_same(struct rte *new, struct rte *old);
@ -438,26 +438,20 @@ ospf_preexport(struct proto *P, rte **new, struct linpool *pool UNUSED)
return 0;
}
static struct ea_list *
static void
ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
{
struct ea_list *e = lp_alloc(pool, sizeof(struct ea_list) + 4 * sizeof(eattr));
e->next = NULL;
e->flags = EALF_SORTED;
e->count = 0;
rte_make_tmp_attr(rt, e, EA_OSPF_METRIC1, EAF_TYPE_INT, rt->u.ospf.metric1);
rte_make_tmp_attr(rt, e, EA_OSPF_METRIC2, EAF_TYPE_INT, rt->u.ospf.metric2);
rte_make_tmp_attr(rt, e, EA_OSPF_TAG, EAF_TYPE_INT, rt->u.ospf.tag);
rte_make_tmp_attr(rt, e, EA_OSPF_ROUTER_ID, EAF_TYPE_ROUTER_ID, rt->u.ospf.router_id);
return e;
rte_init_tmp_attrs(rt, pool, 4);
rte_make_tmp_attr(rt, EA_OSPF_METRIC1, EAF_TYPE_INT, rt->u.ospf.metric1);
rte_make_tmp_attr(rt, EA_OSPF_METRIC2, EAF_TYPE_INT, rt->u.ospf.metric2);
rte_make_tmp_attr(rt, EA_OSPF_TAG, EAF_TYPE_INT, rt->u.ospf.tag);
rte_make_tmp_attr(rt, EA_OSPF_ROUTER_ID, EAF_TYPE_ROUTER_ID, rt->u.ospf.router_id);
}
static void
ospf_store_tmp_attrs(struct rte *rt)
ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool)
{
rte_init_tmp_attrs(rt, pool, 4);
rt->u.ospf.metric1 = rte_store_tmp_attr(rt, EA_OSPF_METRIC1);
rt->u.ospf.metric2 = rte_store_tmp_attr(rt, EA_OSPF_METRIC2);
rt->u.ospf.tag = rte_store_tmp_attr(rt, EA_OSPF_TAG);

38
proto/rip/rip.c
View File

@ -193,8 +193,7 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
e->u.rip.from = a0.nh.iface;
e->u.rip.metric = rt_metric;
e->u.rip.tag = rt_tag;
e->pflags = 0;
e->pflags = EA_ID_FLAG(EA_RIP_METRIC) | EA_ID_FLAG(EA_RIP_TAG);
rte_update(&p->p, en->n.addr, e);
}
@ -997,28 +996,6 @@ rip_trigger_update(struct rip_proto *p)
* RIP protocol glue
*/
static struct ea_list *
rip_prepare_attrs(struct linpool *pool, ea_list *next, u8 metric, u16 tag)
{
struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2 * sizeof(eattr));
l->next = next;
l->flags = EALF_SORTED;
l->count = 2;
l->attrs[0].id = EA_RIP_METRIC;
l->attrs[0].flags = 0;
l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[0].u.data = metric;
l->attrs[1].id = EA_RIP_TAG;
l->attrs[1].flags = 0;
l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[1].u.data = tag;
return l;
}
static void
rip_reload_routes(struct channel *C)
{
@ -1032,17 +1009,20 @@ rip_reload_routes(struct channel *C)
rip_kick_timer(p);
}
static struct ea_list *
static void
rip_make_tmp_attrs(struct rte *rt, struct linpool *pool)
{
return rip_prepare_attrs(pool, NULL, rt->u.rip.metric, rt->u.rip.tag);
rte_init_tmp_attrs(rt, pool, 2);
rte_make_tmp_attr(rt, EA_RIP_METRIC, EAF_TYPE_INT, rt->u.rip.metric);
rte_make_tmp_attr(rt, EA_RIP_TAG, EAF_TYPE_INT, rt->u.rip.tag);
}
static void
rip_store_tmp_attrs(struct rte *rt)
rip_store_tmp_attrs(struct rte *rt, struct linpool *pool)
{
rt->u.rip.metric = ea_get_int(rt->attrs->eattrs, EA_RIP_METRIC, 1);
rt->u.rip.tag = ea_get_int(rt->attrs->eattrs, EA_RIP_TAG, 0);
rte_init_tmp_attrs(rt, pool, 2);
rt->u.rip.metric = rte_store_tmp_attr(rt, EA_RIP_METRIC);
rt->u.rip.tag = rte_store_tmp_attr(rt, EA_RIP_TAG);
}
static int

35
sysdep/unix/krt.c
View File

@ -301,7 +301,7 @@ krt_learn_announce_update(struct krt_proto *p, rte *e)
net *n = e->net;
rta *aa = rta_clone(e->attrs);
rte *ee = rte_get_temp(aa);
ee->pflags = 0;
ee->pflags = EA_ID_FLAG(EA_KRT_SOURCE) | EA_ID_FLAG(EA_KRT_METRIC);
ee->u.krt = e->u.krt;
rte_update(&p->p, n->n.addr, ee);
}
@ -577,7 +577,7 @@ krt_export_net(struct krt_proto *p, net *net, rte **rt_free)
if (filter == FILTER_REJECT)
return NULL;
rte_make_tmp_attrs(&rt, krt_filter_lp);
rte_make_tmp_attrs(&rt, krt_filter_lp, NULL);
/* We could run krt_preexport() here, but it is already handled by KRF_INSTALLED */
@ -910,33 +910,20 @@ krt_scan_timer_kick(struct krt_proto *p)
* Updates
*/
static struct ea_list *
krt_make_tmp_attrs(rte *rt, struct linpool *pool)
static void
krt_make_tmp_attrs(struct rte *rt, struct linpool *pool)
{
struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2 * sizeof(eattr));
l->next = NULL;
l->flags = EALF_SORTED;
l->count = 2;
l->attrs[0].id = EA_KRT_SOURCE;
l->attrs[0].flags = 0;
l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[0].u.data = rt->u.krt.proto;
l->attrs[1].id = EA_KRT_METRIC;
l->attrs[1].flags = 0;
l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[1].u.data = rt->u.krt.metric;
return l;
rte_init_tmp_attrs(rt, pool, 2);
rte_make_tmp_attr(rt, EA_KRT_SOURCE, EAF_TYPE_INT, rt->u.krt.proto);
rte_make_tmp_attr(rt, EA_KRT_METRIC, EAF_TYPE_INT, rt->u.krt.metric);
}
static void
krt_store_tmp_attrs(rte *rt)
krt_store_tmp_attrs(struct rte *rt, struct linpool *pool)
{
/* EA_KRT_SOURCE is read-only */
rt->u.krt.metric = ea_get_int(rt->attrs->eattrs, EA_KRT_METRIC, 0);
rte_init_tmp_attrs(rt, pool, 2);
rt->u.krt.proto = rte_store_tmp_attr(rt, EA_KRT_SOURCE);
rt->u.krt.metric = rte_store_tmp_attr(rt, EA_KRT_METRIC);
}
static int