mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 17:51:53 +00:00
Babel: Convert the rte-local attributes to extended attributes
This commit is contained in:
parent
083e0dbb36
commit
adebcd5e0a
@ -222,13 +222,6 @@ typedef struct rte {
|
||||
byte pflags; /* Protocol-specific flags */
|
||||
btime lastmod; /* Last modified */
|
||||
union { /* Protocol-dependent data (metrics etc.) */
|
||||
#ifdef CONFIG_BABEL
|
||||
struct {
|
||||
u16 seqno; /* Babel seqno */
|
||||
u16 metric; /* Babel metric */
|
||||
u64 router_id; /* Babel router id */
|
||||
} babel;
|
||||
#endif
|
||||
struct { /* Routes generated by krt sync (both temporary and inherited ones) */
|
||||
s8 src; /* Alleged route source (see krt.h) */
|
||||
u8 proto; /* Kernel source protocol ID */
|
||||
|
@ -639,16 +639,33 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
|
||||
.from = r->neigh->addr,
|
||||
.nh.gw = r->next_hop,
|
||||
.nh.iface = r->neigh->ifa->iface,
|
||||
.eattrs = alloca(sizeof(ea_list) + 3*sizeof(eattr)),
|
||||
};
|
||||
|
||||
*a0.eattrs = (ea_list) { .count = 3 };
|
||||
a0.eattrs->attrs[0] = (eattr) {
|
||||
.id = EA_BABEL_METRIC,
|
||||
.type = EAF_TYPE_INT,
|
||||
.u.data = r->metric,
|
||||
};
|
||||
|
||||
struct adata *ad = alloca(sizeof(struct adata) + sizeof(u64));
|
||||
ad->length = sizeof(u64);
|
||||
memcpy(ad->data, &(r->router_id), sizeof(u64));
|
||||
a0.eattrs->attrs[1] = (eattr) {
|
||||
.id = EA_BABEL_ROUTER_ID,
|
||||
.type = EAF_TYPE_OPAQUE,
|
||||
.u.ptr = ad,
|
||||
};
|
||||
|
||||
a0.eattrs->attrs[2] = (eattr) {
|
||||
.id = EA_BABEL_SEQNO,
|
||||
.type = EAF_TYPE_INT,
|
||||
.u.data = r->seqno,
|
||||
};
|
||||
|
||||
rte e0 = {
|
||||
.attrs = &a0,
|
||||
.u.babel = {
|
||||
.seqno = r->seqno,
|
||||
.metric = r->metric,
|
||||
.router_id = r->router_id,
|
||||
},
|
||||
.pflags = EA_ID_FLAG(EA_BABEL_METRIC) | EA_ID_FLAG(EA_BABEL_ROUTER_ID),
|
||||
};
|
||||
|
||||
e->unreachable = 0;
|
||||
@ -1851,7 +1868,10 @@ babel_dump(struct proto *P)
|
||||
static void
|
||||
babel_get_route_info(rte *rte, byte *buf)
|
||||
{
|
||||
buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref, rte->u.babel.metric, rte->u.babel.router_id);
|
||||
u64 rid;
|
||||
memcpy(&rid, ea_find(rte->attrs->eattrs, EA_BABEL_ROUTER_ID)->u.ptr->data, sizeof(u64));
|
||||
buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref,
|
||||
ea_find(rte->attrs->eattrs, EA_BABEL_METRIC)->u.data, rid);
|
||||
}
|
||||
|
||||
static int
|
||||
@ -1859,6 +1879,10 @@ babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
|
||||
{
|
||||
switch (a->id)
|
||||
{
|
||||
case EA_BABEL_SEQNO:
|
||||
bsprintf(buf, "seqno: %d", a->u.data);
|
||||
return GA_FULL;
|
||||
|
||||
case EA_BABEL_METRIC:
|
||||
bsprintf(buf, "metric: %d", a->u.data);
|
||||
return GA_FULL;
|
||||
@ -2092,27 +2116,6 @@ babel_preexport(struct proto *P, struct rte **new, struct linpool *pool UNUSED)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
babel_make_tmp_attrs(struct rte *rt, struct linpool *pool)
|
||||
{
|
||||
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, struct linpool *pool)
|
||||
{
|
||||
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);
|
||||
}
|
||||
|
||||
/*
|
||||
* babel_rt_notify - core tells us about new route (possibly our own),
|
||||
* so store it into our data structures.
|
||||
@ -2127,10 +2130,20 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
|
||||
if (new)
|
||||
{
|
||||
/* Update */
|
||||
uint internal = (new->attrs->src->proto == P);
|
||||
uint rt_seqno = internal ? new->u.babel.seqno : p->update_seqno;
|
||||
uint rt_seqno;
|
||||
uint rt_metric = ea_get_int(new->attrs->eattrs, EA_BABEL_METRIC, 0);
|
||||
u64 rt_router_id = internal ? new->u.babel.router_id : p->router_id;
|
||||
u64 rt_router_id;
|
||||
|
||||
if (new->attrs->src->proto == P)
|
||||
{
|
||||
rt_seqno = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
|
||||
memcpy(&rt_router_id, ea_find(new->attrs->eattrs, EA_BABEL_ROUTER_ID)->u.ptr->data, sizeof(u64));
|
||||
}
|
||||
else
|
||||
{
|
||||
rt_seqno = p->router_id;
|
||||
rt_router_id = p->router_id;
|
||||
}
|
||||
|
||||
if (rt_metric > BABEL_INFINITY)
|
||||
{
|
||||
@ -2173,18 +2186,12 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
|
||||
static int
|
||||
babel_rte_better(struct rte *new, struct rte *old)
|
||||
{
|
||||
return new->u.babel.metric < old->u.babel.metric;
|
||||
}
|
||||
uint new_metric = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
|
||||
uint old_metric = ea_find(old->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
|
||||
|
||||
static int
|
||||
babel_rte_same(struct rte *new, struct rte *old)
|
||||
{
|
||||
return ((new->u.babel.seqno == old->u.babel.seqno) &&
|
||||
(new->u.babel.metric == old->u.babel.metric) &&
|
||||
(new->u.babel.router_id == old->u.babel.router_id));
|
||||
return new_metric < old_metric;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
babel_postconfig(struct proto_config *CF)
|
||||
{
|
||||
@ -2215,10 +2222,7 @@ babel_init(struct proto_config *CF)
|
||||
P->if_notify = babel_if_notify;
|
||||
P->rt_notify = babel_rt_notify;
|
||||
P->preexport = babel_preexport;
|
||||
P->make_tmp_attrs = babel_make_tmp_attrs;
|
||||
P->store_tmp_attrs = babel_store_tmp_attrs;
|
||||
P->rte_better = babel_rte_better;
|
||||
P->rte_same = babel_rte_same;
|
||||
|
||||
return P;
|
||||
}
|
||||
|
@ -27,6 +27,7 @@
|
||||
|
||||
#define EA_BABEL_METRIC EA_CODE(PROTOCOL_BABEL, 0)
|
||||
#define EA_BABEL_ROUTER_ID EA_CODE(PROTOCOL_BABEL, 1)
|
||||
#define EA_BABEL_SEQNO EA_CODE(PROTOCOL_BABEL, 2)
|
||||
|
||||
#define BABEL_MAGIC 42
|
||||
#define BABEL_VERSION 2
|
||||
|
Loading…
Reference in New Issue
Block a user