bird_cflags_default=yes
fi
+AC_PROG_CC
AC_PROG_CC_C99
if test -z "$GCC" ; then
AC_MSG_ERROR([This program requires the GNU C Compiler.])
switch (what->a2.i)
{
case SA_FROM: res.val.ip = rta->from; break;
- case SA_GW: res.val.ip = rta->gw; break;
+ case SA_GW: res.val.ip = rta->nh.gw; break;
case SA_NET: res.val.net = (*f_rte)->net->n.addr; break;
case SA_PROTO: res.val.s = rta->src->proto->name; break;
case SA_SOURCE: res.val.i = rta->source; break;
case SA_SCOPE: res.val.i = rta->scope; break;
case SA_CAST: res.val.i = rta->cast; break;
case SA_DEST: res.val.i = rta->dest; break;
- case SA_IFNAME: res.val.s = rta->iface ? rta->iface->name : ""; break;
- case SA_IFINDEX: res.val.i = rta->iface ? rta->iface->index : 0; break;
+ case SA_IFNAME: res.val.s = rta->nh.iface ? rta->nh.iface->name : ""; break;
+ case SA_IFINDEX: res.val.i = rta->nh.iface ? rta->nh.iface->index : 0; break;
default:
bug("Invalid static attribute access (%x)", res.type);
if (!n || (n->scope == SCOPE_HOST))
runtime( "Invalid gw address" );
- rta->dest = RTD_ROUTER;
- rta->gw = ip;
- rta->iface = n->iface;
- rta->nexthops = NULL;
+ rta->dest = RTD_UNICAST;
+ rta->nh.gw = ip;
+ rta->nh.iface = n->iface;
+ rta->nh.next = NULL;
rta->hostentry = NULL;
}
break;
runtime( "Destination can be changed only to blackhole, unreachable or prohibit" );
rta->dest = i;
- rta->gw = IPA_NONE;
- rta->iface = NULL;
- rta->nexthops = NULL;
+ rta->nh.gw = IPA_NONE;
+ rta->nh.iface = NULL;
+ rta->nh.next = NULL;
rta->hostentry = NULL;
break;
RIP, OSPF, OSPF_IA, OSPF_EXT1, OSPF_EXT2, BGP, PIPE, BABEL)
CF_ENUM(T_ENUM_SCOPE, SCOPE_, HOST, LINK, SITE, ORGANIZATION, UNIVERSE, UNDEFINED)
CF_ENUM(T_ENUM_RTC, RTC_, UNICAST, BROADCAST, MULTICAST, ANYCAST)
-CF_ENUM(T_ENUM_RTD, RTD_, ROUTER, DEVICE, BLACKHOLE, UNREACHABLE, PROHIBIT, MULTIPATH)
+CF_ENUM(T_ENUM_RTD, RTD_, UNICAST, BLACKHOLE, UNREACHABLE, PROHIBIT)
CF_ENUM(T_ENUM_ROA, ROA_, UNKNOWN, VALID, INVALID)
%type <i32> idval
unsigned hash_key; /* Hash key */
unsigned uc; /* Use count */
struct rta *src; /* Source rta entry */
- ip_addr gw; /* Chosen next hop */
+ struct nexthop *nh; /* Chosen next hop */
byte dest; /* Chosen route destination type (RTD_...) */
u32 igp_metric; /* Chosen route IGP metric */
};
* construction of BGP route attribute lists.
*/
-/* Multipath next-hop */
-struct mpnh {
+/* Nexthop structure */
+struct nexthop {
ip_addr gw; /* Next hop */
struct iface *iface; /* Outgoing interface */
- struct mpnh *next;
+ struct nexthop *next;
byte weight;
};
struct rta *next, **pprev; /* Hash chain */
u32 uc; /* Use count */
u32 hash_key; /* Hash over important fields */
- struct mpnh *nexthops; /* Next-hops for multipath routes */
struct ea_list *eattrs; /* Extended Attribute chain */
struct rte_src *src; /* Route source that created the route */
struct hostentry *hostentry; /* Hostentry for recursive next-hops */
- struct iface *iface; /* Outgoing interface */
- ip_addr gw; /* Next hop */
ip_addr from; /* Advertising router */
u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */
- byte source; /* Route source (RTS_...) */
- byte scope; /* Route scope (SCOPE_... -- see ip.h) */
- byte cast; /* Casting type (RTC_...) */
- byte dest; /* Route destination type (RTD_...) */
- byte flags; /* Route flags (RTF_...), now unused */
- byte aflags; /* Attribute cache flags (RTAF_...) */
+ u32 bf[0];
+ u32 source:6; /* Route source (RTS_...) */
+ u32 scope:6; /* Route scope (SCOPE_... -- see ip.h) */
+ u32 cast:6; /* Casting type (RTC_...) */
+ u32 dest:6; /* Route destination type (RTD_...) */
+// u32 eflags:8; /* Flags (RTAF_...) */
+ u32 aflags:8;
+ struct nexthop nh; /* Next hop */
} rta;
#define RTS_DUMMY 0 /* Dummy route to be removed soon */
#define RTC_MULTICAST 2
#define RTC_ANYCAST 3 /* IPv6 Anycast */
-#define RTD_ROUTER 0 /* Next hop is neighbor router */
-#define RTD_DEVICE 1 /* Points to device */
+#define RTD_UNICAST 0 /* Next hop is neighbor router */
#define RTD_BLACKHOLE 2 /* Silently drop packets */
#define RTD_UNREACHABLE 3 /* Reject as unreachable */
#define RTD_PROHIBIT 4 /* Administratively prohibited */
-#define RTD_MULTIPATH 5 /* Multipath route (nexthops != NULL) */
#define RTD_NONE 6 /* Invalid RTD */
/* Flags for net->n.flags, used by kernel syncer */
/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */
static inline int rte_is_reachable(rte *r)
-{ uint d = r->attrs->dest; return (d == RTD_ROUTER) || (d == RTD_DEVICE) || (d == RTD_MULTIPATH); }
+{ uint d = r->attrs->dest; return (d == RTD_UNICAST); }
/*
ea_list *ea_append(ea_list *to, ea_list *what);
void ea_format_bitfield(struct eattr *a, byte *buf, int bufsize, const char **names, int min, int max);
-int mpnh__same(struct mpnh *x, struct mpnh *y); /* Compare multipath nexthops */
-static inline int mpnh_same(struct mpnh *x, struct mpnh *y)
-{ return (x == y) || mpnh__same(x, y); }
-struct mpnh *mpnh_merge(struct mpnh *x, struct mpnh *y, int rx, int ry, int max, linpool *lp);
-void mpnh_insert(struct mpnh **n, struct mpnh *y);
-int mpnh_is_sorted(struct mpnh *x);
+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);
+static inline void nexthop_link(struct rta *a, struct nexthop *from)
+{ a->nh.gw = from->gw; a->nh.iface = from->iface; a->nh.weight = from->weight; a->nh.next = from->next; }
+void nexthop_insert(struct nexthop *n, struct nexthop *y);
+int nexthop_is_sorted(struct nexthop *x);
void rta_init(void);
rta *rta_lookup(rta *); /* Get rta equivalent to this one, uc++ */
pool *rta_pool;
static slab *rta_slab;
-static slab *mpnh_slab;
+static slab *nexthop_slab;
static slab *rte_src_slab;
static struct idm src_ids;
*/
static inline u32
-mpnh_hash(struct mpnh *x)
+nexthop_hash(struct nexthop *x)
{
u32 h = 0;
for (; x; x = x->next)
}
int
-mpnh__same(struct mpnh *x, struct mpnh *y)
+nexthop__same(struct nexthop *x, struct nexthop *y)
{
for (; x && y; x = x->next, y = y->next)
if (!ipa_equal(x->gw, y->gw) || (x->iface != y->iface) || (x->weight != y->weight))
}
static int
-mpnh_compare_node(struct mpnh *x, struct mpnh *y)
+nexthop_compare_node(struct nexthop *x, struct nexthop *y)
{
int r;
return ((int) x->iface->index) - ((int) y->iface->index);
}
-static inline struct mpnh *
-mpnh_copy_node(const struct mpnh *src, linpool *lp)
+static inline struct nexthop *
+nexthop_copy_node(const struct nexthop *src, linpool *lp)
{
- struct mpnh *n = lp_alloc(lp, sizeof(struct mpnh));
+ struct nexthop *n = lp_alloc(lp, sizeof(struct nexthop));
n->gw = src->gw;
n->iface = src->iface;
n->next = NULL;
}
/**
- * mpnh_merge - merge nexthop lists
+ * nexthop_merge - merge nexthop lists
* @x: list 1
* @y: list 2
* @rx: reusability of list @x
* @max: max number of nexthops
* @lp: linpool for allocating nexthops
*
- * The mpnh_merge() function takes two nexthop lists @x and @y and merges them,
+ * The nexthop_merge() function takes two nexthop lists @x and @y and merges them,
* eliminating possible duplicates. The input lists must be sorted and the
* result is sorted too. The number of nexthops in result is limited by @max.
* New nodes are allocated from linpool @lp.
* resulting list is no longer needed. When reusability is not set, the
* corresponding lists are not modified nor linked from the resulting list.
*/
-struct mpnh *
-mpnh_merge(struct mpnh *x, struct mpnh *y, int rx, int ry, int max, linpool *lp)
+struct nexthop *
+nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp)
{
- struct mpnh *root = NULL;
- struct mpnh **n = &root;
+ struct nexthop *root = NULL;
+ struct nexthop **n = &root;
while ((x || y) && max--)
{
- int cmp = mpnh_compare_node(x, y);
+ int cmp = nexthop_compare_node(x, y);
if (cmp < 0)
{
- *n = rx ? x : mpnh_copy_node(x, lp);
+ *n = rx ? x : nexthop_copy_node(x, lp);
x = x->next;
}
else if (cmp > 0)
{
- *n = ry ? y : mpnh_copy_node(y, lp);
+ *n = ry ? y : nexthop_copy_node(y, lp);
y = y->next;
}
else
{
- *n = rx ? x : (ry ? y : mpnh_copy_node(x, lp));
+ *n = rx ? x : (ry ? y : nexthop_copy_node(x, lp));
x = x->next;
y = y->next;
}
}
void
-mpnh_insert(struct mpnh **n, struct mpnh *x)
+nexthop_insert(struct nexthop *n, struct nexthop *x)
{
- for (; *n; n = &((*n)->next))
+ struct nexthop tmp;
+ memcpy(&tmp, n, sizeof(struct nexthop));
+ if (nexthop_compare_node(n, x) > 0) /* Insert to the included nexthop */
{
- int cmp = mpnh_compare_node(*n, x);
+ memcpy(n, x, sizeof(struct nexthop));
+ memcpy(x, &tmp, sizeof(struct nexthop));
+ n->next = x;
+ return;
+ }
+
+ for (struct nexthop **nn = &(n->next); *nn; nn = &((*nn)->next))
+ {
+ int cmp = nexthop_compare_node(*nn, x);
if (cmp < 0)
continue;
- else if (cmp > 0)
- break;
- else
- return;
+
+ if (cmp > 0)
+ {
+ x->next = *nn;
+ *nn = x;
+ }
+
+ return;
}
- x->next = *n;
- *n = x;
}
int
-mpnh_is_sorted(struct mpnh *x)
+nexthop_is_sorted(struct nexthop *x)
{
for (; x && x->next; x = x->next)
- if (mpnh_compare_node(x, x->next) >= 0)
+ if (nexthop_compare_node(x, x->next) >= 0)
return 0;
return 1;
}
-static struct mpnh *
-mpnh_copy(struct mpnh *o)
+static struct nexthop *
+nexthop_copy(struct nexthop *o)
{
- struct mpnh *first = NULL;
- struct mpnh **last = &first;
+ struct nexthop *first = NULL;
+ struct nexthop **last = &first;
for (; o; o = o->next)
{
- struct mpnh *n = sl_alloc(mpnh_slab);
+ struct nexthop *n = sl_alloc(nexthop_slab);
n->gw = o->gw;
n->iface = o->iface;
n->next = NULL;
}
static void
-mpnh_free(struct mpnh *o)
+nexthop_free(struct nexthop *o)
{
- struct mpnh *n;
+ struct nexthop *n;
while (o)
{
n = o->next;
- sl_free(mpnh_slab, o);
+ sl_free(nexthop_slab, o);
o = n;
}
}
#define MIX(f) mem_hash_mix(&h, &(a->f), sizeof(a->f));
MIX(src);
MIX(hostentry);
- MIX(iface);
- MIX(gw);
MIX(from);
MIX(igp_metric);
- MIX(source);
- MIX(scope);
- MIX(cast);
- MIX(dest);
- MIX(flags);
- MIX(aflags);
+ mem_hash_mix(&h, a->bf, sizeof(u32));
#undef MIX
- return mem_hash_value(&h) ^ mpnh_hash(a->nexthops) ^ ea_hash(a->eattrs);
+ return mem_hash_value(&h) ^ nexthop_hash(&(a->nh)) ^ ea_hash(a->eattrs);
}
static inline int
x->scope == y->scope &&
x->cast == y->cast &&
x->dest == y->dest &&
- x->flags == y->flags &&
x->igp_metric == y->igp_metric &&
- ipa_equal(x->gw, y->gw) &&
+ ipa_equal(x->nh.gw, y->nh.gw) &&
ipa_equal(x->from, y->from) &&
- x->iface == y->iface &&
+ x->nh.iface == y->nh.iface &&
x->hostentry == y->hostentry &&
- mpnh_same(x->nexthops, y->nexthops) &&
+ nexthop_same(&(x->nh), &(y->nh)) &&
ea_same(x->eattrs, y->eattrs));
}
memcpy(r, o, sizeof(rta));
r->uc = 1;
- r->nexthops = mpnh_copy(o->nexthops);
+ r->nh.next = nexthop_copy(o->nh.next);
r->eattrs = ea_list_copy(o->eattrs);
return r;
}
a->aflags = 0; /* Poison the entry */
rt_unlock_hostentry(a->hostentry);
rt_unlock_source(a->src);
- mpnh_free(a->nexthops);
+ if (a->nh.next)
+ nexthop_free(a->nh.next);
ea_free(a->eattrs);
sl_free(rta_slab, a);
}
if (!(a->aflags & RTAF_CACHED))
debug(" !CACHED");
debug(" <-%I", a->from);
- if (a->dest == RTD_ROUTER)
- debug(" ->%I", a->gw);
- if (a->dest == RTD_DEVICE || a->dest == RTD_ROUTER)
- debug(" [%s]", a->iface ? a->iface->name : "???" );
+ if (a->dest == RTD_UNICAST)
+ for (struct nexthop *nh = &(a->nh); nh; nh = nh->next)
+ {
+ if (ipa_nonzero(nh->gw)) debug(" ->%I", nh->gw);
+ debug(" [%s]", nh->iface ? nh->iface->name : "???");
+ }
if (a->eattrs)
{
debug(" EA: ");
{
rta_pool = rp_new(&root_pool, "Attributes");
rta_slab = sl_new(rta_pool, sizeof(rta));
- mpnh_slab = sl_new(rta_pool, sizeof(struct mpnh));
+ nexthop_slab = sl_new(rta_pool, sizeof(struct nexthop));
rta_alloc_hash();
rte_src_init();
}
.source = RTS_DEVICE,
.scope = SCOPE_UNIVERSE,
.cast = RTC_UNICAST,
- .dest = RTD_DEVICE,
- .iface = ad->iface
+ .dest = RTD_UNICAST,
+ .nh = {
+ .iface = ad->iface
+ }
};
a = rta_lookup(&a0);
}
-static struct mpnh *
-mpnh_merge_rta(struct mpnh *nhs, rta *a, linpool *pool, int max)
+static struct nexthop *
+nexthop_merge_rta(struct nexthop *nhs, rta *a, linpool *pool, int max)
{
- struct mpnh nh = { .gw = a->gw, .iface = a->iface };
- struct mpnh *nh2 = (a->dest == RTD_MULTIPATH) ? a->nexthops : &nh;
- return mpnh_merge(nhs, nh2, 1, 0, max, pool);
+ return nexthop_merge(nhs, &(a->nh), 1, 0, max, pool);
}
rte *
rt_export_merged(struct channel *c, net *net, rte **rt_free, ea_list **tmpa, linpool *pool, int silent)
{
// struct proto *p = c->proto;
- struct mpnh *nhs = NULL;
+ struct nexthop *nhs = NULL;
rte *best0, *best, *rt0, *rt, *tmp;
best0 = net->routes;
continue;
if (rte_is_reachable(rt))
- nhs = mpnh_merge_rta(nhs, rt->attrs, pool, c->merge_limit);
+ nhs = nexthop_merge_rta(nhs, rt->attrs, pool, c->merge_limit);
if (tmp)
rte_free(tmp);
if (nhs)
{
- nhs = mpnh_merge_rta(nhs, best->attrs, pool, c->merge_limit);
+ nhs = nexthop_merge_rta(nhs, best->attrs, pool, c->merge_limit);
if (nhs->next)
{
best = rte_cow_rta(best, pool);
- best->attrs->dest = RTD_MULTIPATH;
- best->attrs->nexthops = nhs;
+ nexthop_link(best->attrs, nhs);
}
}
return 0;
}
- if ((e->attrs->dest == RTD_MULTIPATH) && !mpnh_is_sorted(e->attrs->nexthops))
+ if ((e->attrs->dest == RTD_UNICAST) && !nexthop_is_sorted(&(e->attrs->nh)))
{
log(L_WARN "Ignoring unsorted multipath route %N received via %s",
n->n.addr, e->sender->proto->name);
if (!he->src)
return a->dest != RTD_UNREACHABLE;
- return (a->iface != he->src->iface) || !ipa_equal(a->gw, he->gw) ||
- (a->dest != he->dest) || (a->igp_metric != he->igp_metric) ||
- !mpnh_same(a->nexthops, he->src->nexthops);
+ return (a->dest != he->dest) || (a->igp_metric != he->igp_metric) ||
+ !nexthop_same(&(a->nh), he->nh);
}
static inline void
rta_apply_hostentry(rta *a, struct hostentry *he)
{
a->hostentry = he;
- a->iface = he->src ? he->src->iface : NULL;
- a->gw = he->gw;
+
+ a->nh.gw = ipa_nonzero(he->nh->gw) ? he->nh->gw : he->link;
+ a->nh.iface = he->nh->iface;
+ a->nh.weight = he->nh->weight;
+ a->nh.next = he->nh->next;
+
a->dest = he->dest;
a->igp_metric = he->igp_metric;
- a->nexthops = he->src ? he->src->nexthops : NULL;
}
static inline rte *
return rt->u.rip.metric;
#endif
- /* Device routes */
- if ((a->dest != RTD_ROUTER) && (a->dest != RTD_MULTIPATH))
+ if (a->source == RTS_DEVICE)
return 0;
return IGP_METRIC_UNKNOWN;
/* Reset the hostentry */
he->src = NULL;
- he->gw = IPA_NONE;
he->dest = RTD_UNREACHABLE;
he->igp_metric = 0;
goto done;
}
- if (a->dest == RTD_DEVICE)
- {
- if (if_local_addr(he->addr, a->iface))
+ if ((a->dest == RTD_UNICAST) && ipa_zero(a->nh.gw) && !a->next)
+ { /* We have singlepath device route */
+ if (if_local_addr(he->addr, a->nh.iface))
{
/* The host address is a local address, this is not valid */
log(L_WARN "Next hop address %I is a local address of iface %s",
- he->addr, a->iface->name);
+ he->addr, a->nh.iface->name);
goto done;
}
/* The host is directly reachable, use link as a gateway */
- he->gw = he->link;
- he->dest = RTD_ROUTER;
+ he->nh = NULL;
+ he->dest = RTD_UNICAST;
}
else
{
/* The host is reachable through some route entry */
- he->gw = a->gw;
+ he->nh = (&a->nh);
he->dest = a->dest;
}
rta *a = e->attrs;
/* Max text length w/o IP addr and interface name is 16 */
- static byte via[IPA_MAX_TEXT_LENGTH+sizeof(a->iface->name)+16];
+ static byte via[IPA_MAX_TEXT_LENGTH+sizeof(a->nh.iface->name)+16];
switch (a->dest)
{
- case RTD_ROUTER: bsprintf(via, "via %I on %s", a->gw, a->iface->name); break;
- case RTD_DEVICE: bsprintf(via, "dev %s", a->iface->name); break;
+ case RTD_UNICAST: if (a->nh.next)
+ bsprintf(via, "multipath");
+ else
+ {
+ if (ipa_nonzero(a->nh.gw)) bsprintf(via, "via %I ", a->nh.gw);
+ bsprintf(via, "dev %s", a->nh.iface->name);
+ }
+ break;
case RTD_BLACKHOLE: bsprintf(via, "blackhole"); break;
case RTD_UNREACHABLE: bsprintf(via, "unreachable"); break;
case RTD_PROHIBIT: bsprintf(via, "prohibited"); break;
- case RTD_MULTIPATH: bsprintf(via, "multipath"); break;
default: bsprintf(via, "???");
}
return via;
int primary = (e->net->routes == e);
int sync_error = (e->net->n.flags & KRF_SYNC_ERROR);
void (*get_route_info)(struct rte *, byte *buf, struct ea_list *attrs);
- struct mpnh *nh;
+ struct nexthop *nh;
tm_format_datetime(tm, &config->tf_route, e->lastmod);
- if (ipa_nonzero(a->from) && !ipa_equal(a->from, a->gw))
+ if (ipa_nonzero(a->from) && !ipa_equal(a->from, a->nh.gw))
bsprintf(from, " from %I", a->from);
else
from[0] = 0;
bsprintf(info, " (%d)", e->pref);
cli_printf(c, -1007, "%-18s %s [%s %s%s]%s%s", ia, rt_format_via(e), a->src->proto->name,
tm, from, primary ? (sync_error ? " !" : " *") : "", info);
- for (nh = a->nexthops; nh; nh = nh->next)
- cli_printf(c, -1007, "\tvia %I on %s weight %d", nh->gw, nh->iface->name, nh->weight + 1);
+ if (a->nh.next)
+ for (nh = &(a->nh); nh; nh = nh->next)
+ cli_printf(c, -1007, "\tvia %I on %s weight %d", nh->gw, nh->iface->name, nh->weight + 1);
if (d->verbose)
rta_show(c, a, tmpa);
}
rte_resolvable(rte *rt)
{
int rd = rt->attrs->dest;
- return (rd == RTD_ROUTER) || (rd == RTD_DEVICE) || (rd == RTD_MULTIPATH);
+ return (rd == RTD_UNICAST);
}
int
if (!nbr || (nbr->scope == SCOPE_HOST))
WITHDRAW(BAD_NEXT_HOP);
- a->dest = RTD_ROUTER;
- a->gw = nbr->addr;
- a->iface = nbr->iface;
+ a->dest = RTD_UNICAST;
+ a->nh.gw = nbr->addr;
+ a->nh.iface = nbr->iface;
+ a->nh.next = NULL;
a->hostentry = NULL;
a->igp_metric = 0;
}
return 0;
/* We need valid global gateway */
- if ((ra->dest != RTD_ROUTER) || ipa_zero(ra->gw) || ipa_is_link_local(ra->gw))
+ if ((ra->dest != RTD_UNICAST) || (ra->nh.next) || ipa_zero(ra->nh.gw) || ipa_is_link_local(ra->nh.gw))
return 0;
/* Use it when exported to internal peers */
return 1;
/* Use it when forwarded to single-hop BGP peer on on the same iface */
- return p->neigh && (p->neigh->iface == ra->iface);
+ return p->neigh && (p->neigh->iface == ra->nh.iface);
}
static void
{
if (bgp_use_gateway(s))
{
- ip_addr nh[1] = { s->route->attrs->gw };
+ ip_addr nh[1] = { s->route->attrs->nh.gw };
bgp_set_attr_data(to, s->pool, BA_NEXT_HOP, 0, nh, 16);
}
else
p->lsab_size = 256;
p->lsab_used = 0;
p->lsab = mb_alloc(P->pool, p->lsab_size);
- p->nhpool = lp_new(P->pool, 12*sizeof(struct mpnh));
+ p->nhpool = lp_new(P->pool, 12*sizeof(struct nexthop));
init_list(&(p->iface_list));
init_list(&(p->area_list));
fib_init(&p->rtf, P->pool, p->ospf2 ? NET_IP4 : NET_IP6,
}
static inline int
-nh_is_vlink(struct mpnh *nhs)
+nh_is_vlink(struct nexthop *nhs)
{
return !nhs->iface;
}
return ort->n.nhs && nh_is_vlink(ort->n.nhs);
}
-static inline struct mpnh *
+static inline struct nexthop *
new_nexthop(struct ospf_proto *p, ip_addr gw, struct iface *iface, byte weight)
{
- struct mpnh *nh = lp_alloc(p->nhpool, sizeof(struct mpnh));
+ struct nexthop *nh = lp_alloc(p->nhpool, sizeof(struct nexthop));
nh->gw = gw;
nh->iface = iface;
nh->next = NULL;
/* Returns true if there are device nexthops in n */
static inline int
-has_device_nexthops(const struct mpnh *n)
+has_device_nexthops(const struct nexthop *n)
{
for (; n; n = n->next)
if (ipa_zero(n->gw))
}
/* Replace device nexthops with nexthops to gw */
-static struct mpnh *
-fix_device_nexthops(struct ospf_proto *p, const struct mpnh *n, ip_addr gw)
+static struct nexthop *
+fix_device_nexthops(struct ospf_proto *p, const struct nexthop *n, ip_addr gw)
{
- struct mpnh *root1 = NULL;
- struct mpnh *root2 = NULL;
- struct mpnh **nn1 = &root1;
- struct mpnh **nn2 = &root2;
+ struct nexthop *root1 = NULL;
+ struct nexthop *root2 = NULL;
+ struct nexthop **nn1 = &root1;
+ struct nexthop **nn2 = &root2;
if (!p->ecmp)
return new_nexthop(p, gw, n->iface, n->weight);
for (; n; n = n->next)
{
- struct mpnh *nn = new_nexthop(p, ipa_zero(n->gw) ? gw : n->gw, n->iface, n->weight);
+ struct nexthop *nn = new_nexthop(p, ipa_zero(n->gw) ? gw : n->gw, n->iface, n->weight);
if (ipa_zero(n->gw))
{
}
}
- return mpnh_merge(root1, root2, 1, 1, p->ecmp, p->nhpool);
+ return nexthop_merge(root1, root2, 1, 1, p->ecmp, p->nhpool);
}
if (old->nhs != new->nhs)
{
- old->nhs = mpnh_merge(old->nhs, new->nhs, old->nhs_reuse, new->nhs_reuse,
+ old->nhs = nexthop_merge(old->nhs, new->nhs, old->nhs_reuse, new->nhs_reuse,
p->ecmp, p->nhpool);
old->nhs_reuse = 1;
}
if (old->nhs != new->nhs)
{
- old->nhs = mpnh_merge(old->nhs, new->nhs, old->nhs_reuse, new->nhs_reuse,
+ old->nhs = nexthop_merge(old->nhs, new->nhs, old->nhs_reuse, new->nhs_reuse,
p->ecmp, p->nhpool);
old->nhs_reuse = 1;
}
static inline int
-inherit_nexthops(struct mpnh *pn)
+inherit_nexthops(struct nexthop *pn)
{
/* Proper nexthops (with defined GW) or dummy vlink nexthops (without iface) */
return pn && (ipa_nonzero(pn->gw) || !pn->iface);
}
-static struct mpnh *
+static struct nexthop *
calc_next_hop(struct ospf_area *oa, struct top_hash_entry *en,
struct top_hash_entry *par, int pos)
{
struct ospf_proto *p = oa->po;
- struct mpnh *pn = par->nhs;
+ struct nexthop *pn = par->nhs;
struct ospf_iface *ifa;
u32 rid = en->lsa.rt;
if (!link_back(oa, en, par))
return;
- struct mpnh *nhs = calc_next_hop(oa, en, par, pos);
+ struct nexthop *nhs = calc_next_hop(oa, en, par, pos);
if (!nhs)
{
log(L_WARN "%s: Cannot find next hop for LSA (Type: %04x, Id: %R, Rt: %R)",
/* Merge old and new */
int new_reuse = (par->nhs != nhs);
- en->nhs = mpnh_merge(en->nhs, nhs, en->nhs_reuse, new_reuse, p->ecmp, p->nhpool);
+ en->nhs = nexthop_merge(en->nhs, nhs, en->nhs_reuse, new_reuse, p->ecmp, p->nhpool);
en->nhs_reuse = 1;
return;
}
(nf->n.metric1 != nf->old_metric1) || (nf->n.metric2 != nf->old_metric2) ||
(nf->n.tag != nf->old_tag) || (nf->n.rid != nf->old_rid) ||
(nr->source != or->source) || (nr->dest != or->dest) ||
- (nr->iface != or->iface) || !ipa_equal(nr->gw, or->gw) ||
- !mpnh_same(nr->nexthops, or->nexthops);
+ (nr->nh.iface != or->nh.iface) || !ipa_equal(nr->nh.gw, or->nh.gw) ||
+ !nexthop_same(&(nr->nh), &(or->nh));
}
static void
/* Sanity check of next-hop addresses, failure should not happen */
if (nf->n.type)
{
- struct mpnh *nh;
+ struct nexthop *nh;
for (nh = nf->n.nhs; nh; nh = nh->next)
if (ipa_nonzero(nh->gw))
{
.cast = RTC_UNICAST
};
- if (nf->n.nhs->next)
- {
- a0.dest = RTD_MULTIPATH;
- a0.nexthops = nf->n.nhs;
- }
- else if (ipa_nonzero(nf->n.nhs->gw))
- {
- a0.dest = RTD_ROUTER;
- a0.iface = nf->n.nhs->iface;
- a0.gw = nf->n.nhs->gw;
- }
- else
- {
- a0.dest = RTD_DEVICE;
- a0.iface = nf->n.nhs->iface;
- }
+ nexthop_link(&a0, nf->n.nhs);
+ a0.dest = RTD_UNICAST;
if (reload || ort_changed(nf, &a0))
{
struct ospf_area *oa;
struct ospf_area *voa; /* Used when route is replaced in ospf_rt_sum_tr(),
NULL otherwise */
- struct mpnh *nhs; /* Next hops computed during SPF */
+ struct nexthop *nhs; /* Next hops computed during SPF */
struct top_hash_entry *en; /* LSA responsible for this orta */
}
orta;
ip_addr fwd = IPA_NONE;
- if ((a->dest == RTD_ROUTER) && use_gw_for_fwaddr(p, a->gw, a->iface))
- fwd = a->gw;
+ if ((a->dest == RTD_UNICAST) && use_gw_for_fwaddr(p, a->nh.gw, a->nh.iface))
+ fwd = a->nh.gw;
/* NSSA-LSA with P-bit set must have non-zero forwarding address */
if (oa && ipa_zero(fwd))
u16 next_lsa_opts; /* For postponed LSA origination */
bird_clock_t inst_time; /* Time of installation into DB */
struct ort *nf; /* Reference fibnode for sum and ext LSAs, NULL for otherwise */
- struct mpnh *nhs; /* Computed nexthops - valid only in ospf_rt_spf() */
+ struct nexthop *nhs; /* Computed nexthops - valid only in ospf_rt_spf() */
ip_addr lb; /* In OSPFv2, link back address. In OSPFv3, any global address in the area useful for vlinks */
u32 lb_id; /* Interface ID of link back iface (for bcast or NBMA networks) */
u32 dist; /* Distance from the root */
while (rt2 && !rip_valid_rte(rt2))
rt2 = rt2->next;
+ a0.dest = RTD_UNICAST;
if (p->ecmp && rt2)
{
/* ECMP route */
- struct mpnh *nhs = NULL;
int num = 0;
for (rt = en->routes; rt && (num < p->ecmp); rt = rt->next)
if (!rip_valid_rte(rt))
continue;
- struct mpnh *nh = alloca(sizeof(struct mpnh));
+ struct nexthop *nh = (a0.nh.next ? &(a0.nh) : alloca(sizeof(struct nexthop)));
+
nh->gw = rt->next_hop;
nh->iface = rt->from->nbr->iface;
nh->weight = rt->from->ifa->cf->ecmp_weight;
- mpnh_insert(&nhs, nh);
+
+ if (a0.nh.next)
+ nexthop_insert(&(a0.nh), nh);
+
num++;
if (rt->tag != rt_tag)
rt_tag = 0;
}
-
- a0.dest = RTD_MULTIPATH;
- a0.nexthops = nhs;
}
else
{
/* Unipath route */
- a0.dest = RTD_ROUTER;
- a0.gw = rt->next_hop;
- a0.iface = rt->from->nbr->iface;
+ a0.nh.next = NULL;
+ a0.nh.gw = rt->next_hop;
+ a0.nh.iface = rt->from->nbr->iface;
a0.from = rt->from->nbr->addr;
}
rta *a = rta_lookup(&a0);
rte *e = rte_get_temp(a);
- e->u.rip.from = a0.iface;
+ e->u.rip.from = a0.nh.iface;
e->u.rip.metric = rt_metric;
e->u.rip.tag = rt_tag;
en->metric = rt_metric;
en->tag = rt_tag;
en->from = (new->attrs->src->proto == P) ? new->u.rip.from : NULL;
- en->iface = new->attrs->iface;
- en->next_hop = new->attrs->gw;
+ en->iface = new->attrs->nh.iface;
+ en->next_hop = new->attrs->nh.gw;
}
else
{
CF_DEFINES
#define STATIC_CFG ((struct static_config *) this_proto)
-static struct static_route *this_srt, *this_srt_nh, *last_srt_nh;
+static struct static_route *this_srt, *last_srt;
static struct f_inst **this_srt_last_cmd;
static void
struct static_route *r;
/* Update undefined use_bfd entries in multipath nexthops */
- if (this_srt->dest == RTD_MULTIPATH)
- for (r = this_srt->mp_next; r; r = r->mp_next)
- if (r->use_bfd < 0)
- r->use_bfd = this_srt->use_bfd;
+ for (r = this_srt->mp_next; r; r = r->mp_next)
+ if (r->use_bfd < 0)
+ r->use_bfd = this_srt->use_bfd;
}
CF_DECLS
add_tail(&STATIC_CFG->other_routes, &this_srt->n);
this_srt->net = $2;
this_srt_last_cmd = &(this_srt->cmds);
+ this_srt->mp_next = NULL;
+ last_srt = NULL;
}
;
stat_multipath1:
VIA ipa ipa_scope {
- last_srt_nh = this_srt_nh;
- this_srt_nh = cfg_allocz(sizeof(struct static_route));
- this_srt_nh->dest = RTD_NONE;
- this_srt_nh->via = $2;
- this_srt_nh->via_if = $3;
- this_srt_nh->if_name = (void *) this_srt; /* really */
- this_srt_nh->use_bfd = -1; /* undefined */
+ last_srt = last_srt ? last_srt->mp_next = cfg_allocz(sizeof(struct static_route)) : this_srt;
+
+ last_srt->dest = RTD_UNICAST;
+ last_srt->via = $2;
+ last_srt->via_if = $3;
+ last_srt->if_name = (void *) this_srt; /* really */
+ last_srt->use_bfd = -1; /* undefined */
+ last_srt->mp_next = NULL;
}
| stat_multipath1 WEIGHT expr {
- this_srt_nh->weight = $3 - 1;
+ last_srt->weight = $3 - 1;
if (($3<1) || ($3>256)) cf_error("Weight must be in range 1-256");
}
| stat_multipath1 BFD bool {
- this_srt_nh->use_bfd = $3; cf_check_bfd($3);
+ last_srt->use_bfd = $3; cf_check_bfd($3);
}
;
stat_multipath:
- stat_multipath1 { this_srt->mp_next = this_srt_nh; }
- | stat_multipath stat_multipath1 { last_srt_nh->mp_next = this_srt_nh; }
+ stat_multipath1
+ | stat_multipath stat_multipath1
;
stat_route:
stat_route0 VIA ipa ipa_scope {
- this_srt->dest = RTD_ROUTER;
+ this_srt->dest = RTD_UNICAST;
this_srt->via = $3;
this_srt->via_if = $4;
}
| stat_route0 VIA TEXT {
- this_srt->dest = RTD_DEVICE;
+ this_srt->dest = RTD_UNICAST;
+ this_srt->via = IPA_NONE;
this_srt->if_name = $3;
rem_node(&this_srt->n);
add_tail(&STATIC_CFG->iface_routes, &this_srt->n);
}
- | stat_route0 MULTIPATH stat_multipath {
- this_srt->dest = RTD_MULTIPATH;
- }
+ | stat_route0 MULTIPATH stat_multipath
| stat_route0 RECURSIVE ipa {
this_srt->dest = RTDX_RECURSIVE;
this_srt->via = $3;
}
static void
-static_install(struct proto *p, struct static_route *r, struct iface *ifa)
+static_install(struct proto *p, struct static_route *r)
{
rta a;
rte *e;
- if (r->installed > 0)
+ if (!(r->state & STS_WANT) && r->dest != RTD_UNICAST)
return;
DBG("Installing static route %N, rtd=%d\n", r->net, r->dest);
bzero(&a, sizeof(a));
a.src = p->main_source;
- a.source = (r->dest == RTD_DEVICE) ? RTS_STATIC_DEVICE : RTS_STATIC;
+ a.source = ((r->dest == RTD_UNICAST) && ipa_zero(r->via)) ? RTS_STATIC_DEVICE : RTS_STATIC;
a.scope = SCOPE_UNIVERSE;
a.cast = RTC_UNICAST;
a.dest = r->dest;
- a.gw = r->via;
- a.iface = ifa;
-
- if (r->dest == RTD_MULTIPATH)
+ if (r->dest == RTD_UNICAST)
{
struct static_route *r2;
- struct mpnh *nhs = NULL;
+ int num = 0;
+
+ for (r2 = r; r2; r2 = r2->mp_next)
+ {
+ if ((r2->state & STS_INSTALLED) && !(r2->state & STS_FORCE))
+ continue;
- for (r2 = r->mp_next; r2; r2 = r2->mp_next)
- if (r2->installed)
+ if (r2->state & STS_WANT)
{
- struct mpnh *nh = alloca(sizeof(struct mpnh));
+ struct nexthop *nh = (a.nh.next) ? alloca(sizeof(struct nexthop)) : &(a.nh);
nh->gw = r2->via;
nh->iface = r2->neigh->iface;
nh->weight = r2->weight;
- mpnh_insert(&nhs, nh);
+ if (a.nh.next)
+ nexthop_insert(&(a.nh), nh);
+ r2->state |= STS_INSTALLED;
+ num++;
}
+ else
+ r2->state = 0;
+ }
- /* There is at least one nexthop */
- if (!nhs->next)
- {
- /* Fallback to unipath route for exactly one nexthop */
- a.dest = RTD_ROUTER;
- a.gw = nhs->gw;
- a.iface = nhs->iface;
- }
- else
- a.nexthops = nhs;
+ if (!num) // No nexthop to install
+ {
+ if (r->state & STS_INSTALLED_ANY)
+ rte_update(p, r->net, NULL);
+
+ return;
+ }
}
if (r->dest == RTDX_RECURSIVE)
f_eval_rte(r->cmds, &e, static_lp);
rte_update(p, r->net, e);
- r->installed = 1;
if (r->cmds)
lp_flush(static_lp);
static void
static_remove(struct proto *p, struct static_route *r)
{
- if (!r->installed)
+ if (!(r->state & STS_INSTALLED_ANY))
return;
DBG("Removing static route %N via %I\n", r->net, r->via);
rte_update(p, r->net, NULL);
- r->installed = 0;
+
+ r->state &= ~(STS_INSTALLED | STS_INSTALLED_ANY);
}
static void
DBG("static_add(%N,%d)\n", r->net, r->dest);
switch (r->dest)
{
- case RTD_ROUTER:
- {
- struct neighbor *n = neigh_find2(p, &r->via, r->via_if, NEF_STICKY);
- if (n)
- {
- r->chain = n->data;
- n->data = r;
- r->neigh = n;
-
- static_update_bfd(p, r);
- if (static_decide(cf, r))
- static_install(p, r, n->iface);
- else
- static_remove(p, r);
- }
- else
- {
- log(L_ERR "Static route destination %I is invalid. Ignoring.", r->via);
- static_remove(p, r);
- }
- break;
- }
-
- case RTD_DEVICE:
- break;
-
- case RTD_MULTIPATH:
+ case RTD_UNICAST:
{
int count = 0;
struct static_route *r2;
- for (r2 = r->mp_next; r2; r2 = r2->mp_next)
+ for (r2 = r; r2; r2 = r2->mp_next)
{
struct neighbor *n = neigh_find2(p, &r2->via, r2->via_if, NEF_STICKY);
if (n)
r2->neigh = n;
static_update_bfd(p, r2);
- r2->installed = static_decide(cf, r2);
- count += r2->installed;
+ r2->state = static_decide(cf,r2) ? STS_WANT : 0;
+ count++;
}
else
{
log(L_ERR "Static route destination %I is invalid. Ignoring.", r2->via);
- r2->installed = 0;
+ r2->state = 0;
}
}
if (count)
static_install(p, r, NULL);
- else
- static_remove(p, r);
+
break;
}
static_rte_cleanup(struct proto *p UNUSED, struct static_route *r)
{
struct static_route *r2;
-
- if (r->bfd_req)
- {
- rfree(r->bfd_req);
- r->bfd_req = NULL;
- }
-
- if (r->dest == RTD_MULTIPATH)
- for (r2 = r->mp_next; r2; r2 = r2->mp_next)
- if (r2->bfd_req)
- {
- rfree(r2->bfd_req);
- r2->bfd_req = NULL;
- }
+
+ for (r2 = r; r2; r2 = r2->mp_next)
+ if (r2->bfd_req)
+ {
+ rfree(r2->bfd_req);
+ r2->bfd_req = NULL;
+ }
}
static int
/* Just reset the flag, the routes will be flushed by the nest */
WALK_LIST(r, cf->iface_routes)
- r->installed = 0;
+ r->state = 0;
WALK_LIST(r, cf->other_routes)
{
static_rte_cleanup(p, r);
- r->installed = 0;
+ r->state = 0;
}
/* Handle failure during channel reconfigure */
if (cf)
{
WALK_LIST(r, cf->iface_routes)
- r->installed = 0;
+ r->state = 0;
WALK_LIST(r, cf->other_routes)
- r->installed = 0;
+ r->state = 0;
}
return PS_DOWN;
static void
static_update_rte(struct proto *p, struct static_route *r)
{
- switch (r->dest)
- {
- case RTD_ROUTER:
- if (static_decide((struct static_config *) p->cf, r))
- static_install(p, r, r->neigh->iface);
- else
- static_remove(p, r);
- break;
-
- case RTD_NONE: /* a part of multipath route */
- {
- int decision = static_decide((struct static_config *) p->cf, r);
- if (decision == r->installed)
- break; /* no change */
- r->installed = decision;
-
- struct static_route *r1, *r2;
- int count = 0;
- r1 = (void *) r->if_name; /* really */
- for (r2 = r1->mp_next; r2; r2 = r2->mp_next)
- count += r2->installed;
-
- if (count)
- {
- /* Set of nexthops changed - force reinstall */
- r1->installed = 0;
- static_install(p, r1, NULL);
- }
- else
- static_remove(p, r1);
+ if (r->dest != RTD_UNICAST)
+ return;
- break;
- }
- }
+ if (static_decide((struct static_config *) p->cf, r))
+ static_install(p, r, r->neigh->iface);
+ else
+ static_remove(p, r);
}
static void
static_dump_rt(struct static_route *r)
{
debug("%-1N: ", r->net);
- switch (r->dest)
- {
- case RTD_ROUTER:
- debug("via %I\n", r->via);
- break;
- case RTD_DEVICE:
+ if (r->dest == RTD_UNICAST)
+ if (ipa_zero(r->via))
debug("dev %s\n", r->if_name);
- break;
- default:
- debug("rtd %d\n", r->dest);
- break;
- }
+ else
+ debug("via %I\n", r->via);
+ else
+ debug("rtd %d\n", r->dest);
}
static void
switch (x->dest)
{
- case RTD_ROUTER:
- return ipa_equal(x->via, y->via) && (x->via_if == y->via_if);
-
- case RTD_DEVICE:
- return !strcmp(x->if_name, y->if_name);
-
- case RTD_MULTIPATH:
- for (x = x->mp_next, y = y->mp_next;
- x && y;
- x = x->mp_next, y = y->mp_next)
- if (!ipa_equal(x->via, y->via) ||
- (x->via_if != y->via_if) ||
- (x->use_bfd != y->use_bfd) ||
- (x->weight != y->weight))
- return 0;
- return !x && !y;
+ case RTD_UNICAST:
+ {
+ struct static_route *xc, *yc;
+ for (xc = x, yc = y; xc && yc; xc = xc->mp_next, yc = yc->mp_next)
+ {
+ if (ipa_nonzero(xc->via) && ipa_nonzero(yc->via))
+ {
+ if (!ipa_equal(x->via, y->via) ||
+ (x->via_if != y->via_if) ||
+ (x->use_bfd != y->use_bfd) ||
+ (x->weight != y->weight))
+ return 0;
+ }
+ else
+ if (strcmp(x->if_name, y->if_name) ||
+ (x->use_bfd != y->use_bfd) ||
+ (x->weight != y->weight))
+ return 0;
+ }
+ return 1;
+ }
case RTDX_RECURSIVE:
return ipa_equal(x->via, y->via);
found:
/* If destination is different, force reinstall */
- if ((r->installed > 0) && !static_same_rte(r, t))
- t->installed = -1;
+ if (r->state && !static_same_rte(r, t))
+ t->state = r->state | STS_WANT | STS_FORCE;
else
- t->installed = r->installed;
+ t->state = r->state;
}
static inline rtable *
static void
static_copy_routes(list *dlst, list *slst)
{
- struct static_route *dr, *sr;
+ struct static_route *sr;
init_list(dlst);
WALK_LIST(sr, *slst)
{
- /* copy one route */
- dr = cfg_alloc(sizeof(struct static_route));
- memcpy(dr, sr, sizeof(struct static_route));
-
- /* This fn is supposed to be called on fresh src routes, which have 'live'
- fields (like .chain, .neigh or .installed) zero, so no need to zero them */
-
- /* We need to copy multipath chain, because there are backptrs in 'if_name' */
- if (dr->dest == RTD_MULTIPATH)
- {
- struct static_route *md, *ms, **mp_last;
-
- mp_last = &(dr->mp_next);
- for (ms = sr->mp_next; ms; ms = ms->mp_next)
- {
- md = cfg_alloc(sizeof(struct static_route));
- memcpy(md, ms, sizeof(struct static_route));
- md->if_name = (void *) dr; /* really */
-
- *mp_last = md;
- mp_last = &(md->mp_next);
- }
- *mp_last = NULL;
- }
+ struct static_route *srr, *drr = NULL;
+ for (srr = sr; srr; srr = srr->mp_next)
+ {
+ /* copy one route */
+ struct static_route *dr = cfg_alloc(sizeof(struct static_route));
+ if (drr)
+ drr->mp_next = dr;
+ else
+ add_tail(dlst, &(dr->n));
- add_tail(dlst, (node *) dr);
+ memcpy(dr, sr, sizeof(struct static_route));
+ drr = dr;
+ }
}
}
.copy_config = static_copy_config
};
-static void
-static_show_rt(struct static_route *r)
+static byte *
+static_format_via(struct static_route *r)
{
- byte via[IPA_MAX_TEXT_LENGTH + 25];
+ static byte via[IPA_MAX_TEXT_LENGTH + 25];
switch (r->dest)
{
- case RTD_ROUTER: bsprintf(via, "via %I%J", r->via, r->via_if); break;
- case RTD_DEVICE: bsprintf(via, "dev %s", r->if_name); break;
+ case RTD_UNICAST: if (ipa_zero(r->via)) bsprintf(via, "dev %s", r->if_name);
+ else bsprintf(via, "via %I%J", r->via, r->via_if);
+ break;
case RTD_BLACKHOLE: bsprintf(via, "blackhole"); break;
case RTD_UNREACHABLE: bsprintf(via, "unreachable"); break;
case RTD_PROHIBIT: bsprintf(via, "prohibited"); break;
- case RTD_MULTIPATH: bsprintf(via, "multipath"); break;
case RTDX_RECURSIVE: bsprintf(via, "recursive %I", r->via); break;
default: bsprintf(via, "???");
}
- cli_msg(-1009, "%N %s%s%s", r->net, via,
- r->bfd_req ? " (bfd)" : "", r->installed ? "" : " (dormant)");
+ return via;
+}
- struct static_route *r2;
- if (r->dest == RTD_MULTIPATH)
- for (r2 = r->mp_next; r2; r2 = r2->mp_next)
- cli_msg(-1009, "\tvia %I%J weight %d%s%s", r2->via, r2->via_if, r2->weight + 1,
- r2->bfd_req ? " (bfd)" : "", r2->installed ? "" : " (dormant)");
+static void
+static_show_rt(struct static_route *r)
+{
+ if (r->mp_next)
+ {
+ cli_msg(-1009, "%N", r->net);
+ struct static_route *r2;
+ for (r2 = r; r2; r2 = r2->mp_next)
+ cli_msg(-1009, "\t%s weight %d%s%s", static_format_via(r2), r2->weight + 1,
+ r2->bfd_req ? " (bfd)" : "", (r2->state & STS_INSTALLED) ? "" : " (dormant)");
+ }
+ else
+ cli_msg(-1009, "%N %s%s%s", r->net, static_format_via(r),
+ r->bfd_req ? " (bfd)" : "", (r->state & STS_INSTALLED) ? "" : " (dormant)");
}
void
struct iface *via_if; /* Destination iface, for link-local vias */
struct neighbor *neigh;
byte *if_name; /* Name for RTD_DEVICE routes */
- struct static_route *mp_next; /* Nexthops for RTD_MULTIPATH routes */
+ struct static_route *mp_next; /* Nexthops for multipath routes */
struct f_inst *cmds; /* List of commands for setting attributes */
- int installed; /* Installed in rt table, -1 for reinstall */
+ u32 state; /* Current state: STS_* */
int use_bfd; /* Configured to use BFD */
int weight; /* Multipath next hop weight */
struct bfd_request *bfd_req; /* BFD request, if BFD is used */
};
+#define STS_INSTALLED 0x1
+#define STS_INSTALLED_ANY 0x2
+#define STS_WANT 0x4
+#define STS_FORCE 0x8
+
/* Dummy nodes (parts of multipath route) abuses masklen field for weight
and if_name field for a ptr to the master (RTD_MULTIPATH) node. */
return
a->cast == RTC_UNICAST &&
- (a->dest == RTD_ROUTER
- || a->dest == RTD_DEVICE
+ ((a->dest == RTD_UNICAST && !a->nh.next) /* No multipath support */
#ifdef RTF_REJECT
|| a->dest == RTD_UNREACHABLE
#endif
net *net = e->net;
rta *a = e->attrs;
static int msg_seq;
- struct iface *j, *i = a->iface;
+ struct iface *j, *i = a->nh.iface;
int l;
struct ks_msg msg;
char *body = (char *)msg.buf;
}
}
- gw = a->gw;
+ gw = a->nh.gw;
/* Embed interface ID to link-local address */
if (ipa_is_link_local(gw))
switch (a->dest)
{
- case RTD_ROUTER:
- msg.rtm.rtm_flags |= RTF_GATEWAY;
- msg.rtm.rtm_addrs |= RTA_GATEWAY;
+ case RTD_UNICAST:
+ if (ipa_zero(gw))
+ {
+ if(i)
+ {
+#ifdef RTF_CLONING
+ if (cmd == RTM_ADD && (i->flags & IF_MULTIACCESS) != IF_MULTIACCESS) /* PTP */
+ msg.rtm.rtm_flags |= RTF_CLONING;
+#endif
+
+ if(!i->addr) {
+ log(L_ERR "KRT: interface %s has no IP addess", i->name);
+ return -1;
+ }
+
+ sockaddr_fill(&gate, ipa_is_ip4(i->addr->ip) ? AF_INET : AF_INET6, i->addr->ip, NULL, 0);
+ msg.rtm.rtm_addrs |= RTA_GATEWAY;
+ }
+ } else {
+ msg.rtm.rtm_flags |= RTF_GATEWAY;
+ msg.rtm.rtm_addrs |= RTA_GATEWAY;
+ }
break;
#ifdef RTF_REJECT
#ifdef RTF_BLACKHOLE
case RTD_BLACKHOLE:
#endif
- case RTD_DEVICE:
- if(i)
- {
-#ifdef RTF_CLONING
- if (cmd == RTM_ADD && (i->flags & IF_MULTIACCESS) != IF_MULTIACCESS) /* PTP */
- msg.rtm.rtm_flags |= RTF_CLONING;
-#endif
-
- if(!i->addr) {
- log(L_ERR "KRT: interface %s has no IP addess", i->name);
- return -1;
- }
-
- sockaddr_fill(&gate, ipa_is_ip4(i->addr->ip) ? AF_INET : AF_INET6, i->addr->ip, NULL, 0);
- msg.rtm.rtm_addrs |= RTA_GATEWAY;
- }
- break;
default:
bug("krt-sock: unknown flags, but not filtered");
}
}
#endif
- a.iface = if_find_by_index(msg->rtm.rtm_index);
- if (!a.iface)
+ a.nh.iface = if_find_by_index(msg->rtm.rtm_index);
+ if (!a.nh.iface)
{
log(L_ERR "KRT: Received route %N with unknown ifindex %u",
net->n.addr, msg->rtm.rtm_index);
return;
}
+ a.dest = RTD_UNICAST;
+ a.nh.next = NULL;
if (flags & RTF_GATEWAY)
{
neighbor *ng;
- a.dest = RTD_ROUTER;
- a.gw = igate;
+ a.nh.gw = igate;
/* Clean up embedded interface ID returned in link-local address */
- if (ipa_is_link_local(a.gw))
- _I0(a.gw) = 0xfe800000;
+ if (ipa_is_link_local(a.nh.gw))
+ _I0(a.nh.gw) = 0xfe800000;
- ng = neigh_find2(&p->p, &a.gw, a.iface, 0);
+ ng = neigh_find2(&p->p, &a.nh.gw, a.nh.iface, 0);
if (!ng || (ng->scope == SCOPE_HOST))
{
/* Ignore routes with next-hop 127.0.0.1, host routes with such
next-hop appear on OpenBSD for address aliases. */
- if (ipa_classify(a.gw) == (IADDR_HOST | SCOPE_HOST))
+ if (ipa_classify(a.nh.gw) == (IADDR_HOST | SCOPE_HOST))
return;
log(L_ERR "KRT: Received route %N with strange next-hop %I",
- net->n.addr, a.gw);
+ net->n.addr, a.nh.gw);
return;
}
}
else
- a.dest = RTD_DEVICE;
+ a.nh.gw = IPA_NONE;
done:
e = rte_get_temp(&a);
#include "nest/route.h"
#include "nest/protocol.h"
#include "nest/iface.h"
+#include "lib/alloca.h"
#include "sysdep/unix/timer.h"
#include "sysdep/unix/unix.h"
#include "sysdep/unix/krt.h"
[IFA_ADDRESS] = { 1, 1, sizeof(ip4_addr) },
[IFA_LOCAL] = { 1, 1, sizeof(ip4_addr) },
[IFA_BROADCAST] = { 1, 1, sizeof(ip4_addr) },
- [IFA_FLAGS] = { 1, 1, sizeof(u32) },
};
static struct nl_want_attrs ifa_attr_want6[BIRD_IFA_MAX] = {
#define BIRD_RTA_MAX (RTA_TABLE+1)
-static struct nl_want_attrs mpnh_attr_want4[BIRD_RTA_MAX] = {
+static struct nl_want_attrs nexthop_attr_want4[BIRD_RTA_MAX] = {
[RTA_GATEWAY] = { 1, 1, sizeof(ip4_addr) },
};
}
static void
-nl_add_multipath(struct nlmsghdr *h, uint bufsize, struct mpnh *nh)
+nl_add_multipath(struct nlmsghdr *h, uint bufsize, struct nexthop *nh)
{
struct rtattr *a = nl_open_attr(h, bufsize, RTA_MULTIPATH);
nl_close_attr(h, a);
}
-static struct mpnh *
+static struct nexthop *
nl_parse_multipath(struct krt_proto *p, struct rtattr *ra)
{
/* Temporary buffer for multicast nexthops */
- static struct mpnh *nh_buffer;
+ static struct nexthop *nh_buffer;
static int nh_buf_size; /* in number of structures */
static int nh_buf_used;
struct rtattr *a[BIRD_RTA_MAX];
struct rtnexthop *nh = RTA_DATA(ra);
- struct mpnh *rv, *first, **last;
+ struct nexthop *rv, *first, **last;
unsigned len = RTA_PAYLOAD(ra);
first = NULL;
if (nh_buf_used == nh_buf_size)
{
nh_buf_size = nh_buf_size ? (nh_buf_size * 2) : 4;
- nh_buffer = xrealloc(nh_buffer, nh_buf_size * sizeof(struct mpnh));
+ nh_buffer = xrealloc(nh_buffer, nh_buf_size * sizeof(struct nexthop));
}
*last = rv = nh_buffer + nh_buf_used++;
rv->next = NULL;
/* Nonexistent RTNH_PAYLOAD ?? */
nl_attr_len = nh->rtnh_len - RTNH_LENGTH(0);
- nl_parse_attrs(RTNH_DATA(nh), mpnh_attr_want4, a, sizeof(a));
+ nl_parse_attrs(RTNH_DATA(nh), nexthop_attr_want4, a, sizeof(a));
if (a[RTA_GATEWAY])
{
rv->gw = rta_get_ipa(a[RTA_GATEWAY]);
switch (a->dest)
{
- case RTD_ROUTER:
- case RTD_DEVICE:
- if (a->iface == NULL)
- return 0;
+ case RTD_UNICAST:
+ for (struct nexthop *nh = &(a->nh); nh; nh = nh->next)
+ if (nh->iface)
+ return 1;
+ return 0;
case RTD_BLACKHOLE:
case RTD_UNREACHABLE:
case RTD_PROHIBIT:
- case RTD_MULTIPATH:
break;
default:
return 0;
}
static inline int
-nh_bufsize(struct mpnh *nh)
+nh_bufsize(struct nexthop *nh)
{
int rv = 0;
for (; nh != NULL; nh = nh->next)
}
static int
-nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int op, int dest, ip_addr gw, struct iface *iface)
+nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int op, int dest, struct nexthop *nh)
{
eattr *ea;
net *net = e->net;
rta *a = e->attrs;
- int bufsize = 128 + KRT_METRICS_MAX*8 + nh_bufsize(a->nexthops);
+ int bufsize = 128 + KRT_METRICS_MAX*8 + nh_bufsize(&(a->nh));
u32 priority = 0;
struct {
if (ea = ea_find(eattrs, EA_KRT_SCOPE))
r->r.rtm_scope = ea->u.data;
else
- r->r.rtm_scope = (dest == RTD_DEVICE) ? RT_SCOPE_LINK : RT_SCOPE_UNIVERSE;
+ r->r.rtm_scope = (dest == RTD_UNICAST && ipa_zero(nh->gw)) ? RT_SCOPE_LINK : RT_SCOPE_UNIVERSE;
if (ea = ea_find(eattrs, EA_KRT_PREFSRC))
nl_add_attr_ipa(&r->h, rsize, RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data);
/* a->iface != NULL checked in krt_capable() for router and device routes */
switch (dest)
{
- case RTD_ROUTER:
- r->r.rtm_type = RTN_UNICAST;
- nl_add_attr_u32(&r->h, rsize, RTA_OIF, iface->index);
- nl_add_attr_ipa(&r->h, rsize, RTA_GATEWAY, gw);
- break;
- case RTD_DEVICE:
+ case RTD_UNICAST:
r->r.rtm_type = RTN_UNICAST;
- nl_add_attr_u32(&r->h, rsize, RTA_OIF, iface->index);
+ if (nh->next && !krt_ecmp6(p))
+ nl_add_multipath(&r->h, rsize, nh);
+ else
+ {
+ nl_add_attr_u32(&r->h, rsize, RTA_OIF, nh->iface->index);
+
+ if (ipa_nonzero(nh->gw))
+ nl_add_attr_ipa(&r->h, rsize, RTA_GATEWAY, nh->gw);
+ }
break;
case RTD_BLACKHOLE:
r->r.rtm_type = RTN_BLACKHOLE;
case RTD_PROHIBIT:
r->r.rtm_type = RTN_PROHIBIT;
break;
- case RTD_MULTIPATH:
- r->r.rtm_type = RTN_UNICAST;
- nl_add_multipath(&r->h, rsize, a->nexthops);
- break;
case RTD_NONE:
break;
default:
rta *a = e->attrs;
int err = 0;
- if (krt_ecmp6(p) && (a->dest == RTD_MULTIPATH))
+ if (krt_ecmp6(p) && a->nh.next)
{
- struct mpnh *nh = a->nexthops;
+ struct nexthop *nh = &(a->nh);
- err = nl_send_route(p, e, eattrs, NL_OP_ADD, RTD_ROUTER, nh->gw, nh->iface);
+ err = nl_send_route(p, e, eattrs, NL_OP_ADD, RTD_UNICAST, nh);
if (err < 0)
return err;
for (nh = nh->next; nh; nh = nh->next)
- err += nl_send_route(p, e, eattrs, NL_OP_APPEND, RTD_ROUTER, nh->gw, nh->iface);
+ err += nl_send_route(p, e, eattrs, NL_OP_APPEND, RTD_UNICAST, nh);
return err;
}
- return nl_send_route(p, e, eattrs, NL_OP_ADD, a->dest, a->gw, a->iface);
+ return nl_send_route(p, e, eattrs, NL_OP_ADD, a->dest, &(a->nh));
}
static inline int
/* For IPv6, we just repeatedly request DELETE until we get error */
do
- err = nl_send_route(p, e, eattrs, NL_OP_DELETE, RTD_NONE, IPA_NONE, NULL);
+ err = nl_send_route(p, e, eattrs, NL_OP_DELETE, RTD_NONE, NULL);
while (krt_ecmp6(p) && !err);
return err;
}
-static inline struct mpnh *
-nl_alloc_mpnh(struct nl_parse_state *s, ip_addr gw, struct iface *iface, byte weight)
+static inline struct nexthop *
+nl_alloc_nexthop(struct nl_parse_state *s, ip_addr gw, struct iface *iface, byte weight)
{
- struct mpnh *nh = lp_alloc(s->pool, sizeof(struct mpnh));
+ struct nexthop *nh = lp_alloc(s->pool, sizeof(struct nexthop));
nh->gw = gw;
nh->iface = iface;
if (s->net && !nl_mergable_route(s, net, p, priority, i->rtm_type))
nl_announce_route(s);
- rta *ra = lp_allocz(s->pool, sizeof(rta));
+ rta *ra = lp_allocz(s->pool, sizeof(rta)); // TODO: fix alloc
ra->src = p->p.main_source;
ra->source = RTS_INHERIT;
ra->scope = SCOPE_UNIVERSE;
if (a[RTA_MULTIPATH] && (i->rtm_family == AF_INET))
{
- ra->dest = RTD_MULTIPATH;
- ra->nexthops = nl_parse_multipath(p, a[RTA_MULTIPATH]);
- if (!ra->nexthops)
+ struct nexthop *nh = nl_parse_multipath(p, a[RTA_MULTIPATH]);
+ if (!nh)
{
log(L_ERR "KRT: Received strange multipath route %N", net->n.addr);
return;
}
+ nexthop_link(ra, nh);
break;
}
- ra->iface = if_find_by_index(oif);
- if (!ra->iface)
+ ra->nh.iface = if_find_by_index(oif);
+ if (!ra->nh.iface)
{
log(L_ERR "KRT: Received route %N with unknown ifindex %u", net->n.addr, oif);
return;
if (a[RTA_GATEWAY])
{
- ra->dest = RTD_ROUTER;
- ra->gw = rta_get_ipa(a[RTA_GATEWAY]);
+ ra->nh.gw = rta_get_ipa(a[RTA_GATEWAY]);
/* Silently skip strange 6to4 routes */
const net_addr_ip6 sit = NET_ADDR_IP6(IP6_NONE, 96);
- if ((i->rtm_family == AF_INET6) && ipa_in_netX(ra->gw, (net_addr *) &sit))
+ if ((i->rtm_family == AF_INET6) && ipa_in_netX(ra->nh.gw, (net_addr *) &sit))
return;
neighbor *nbr;
- nbr = neigh_find2(&p->p, &ra->gw, ra->iface,
+ nbr = neigh_find2(&p->p, &ra->nh.gw, ra->nh.iface,
(i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0);
if (!nbr || (nbr->scope == SCOPE_HOST))
{
- log(L_ERR "KRT: Received route %N with strange next-hop %I", net->n.addr, ra->gw);
+ log(L_ERR "KRT: Received route %N with strange next-hop %I", net->n.addr,
+ ra->nh.gw);
return;
}
}
- else
- {
- ra->dest = RTD_DEVICE;
- def_scope = RT_SCOPE_LINK;
- }
break;
case RTN_BLACKHOLE:
/* Merge next hops with the stored route */
rta *a = s->attrs;
- if (a->dest != RTD_MULTIPATH)
- {
- a->dest = RTD_MULTIPATH;
- a->nexthops = nl_alloc_mpnh(s, a->gw, a->iface, 0);
- }
-
- mpnh_insert(&a->nexthops, nl_alloc_mpnh(s, ra->gw, ra->iface, 0));
+ nexthop_insert(&a->nh, &ra->nh);
}
}
if (ka->dest != ea->dest)
return 0;
- switch (ka->dest)
- {
- case RTD_ROUTER:
- return ipa_equal(ka->gw, ea->gw);
- case RTD_DEVICE:
- return !strcmp(ka->iface->name, ea->iface->name);
- case RTD_MULTIPATH:
- return mpnh_same(ka->nexthops, ea->nexthops);
- default:
- return 1;
- }
+
+ if (ka->dest == RTD_UNICAST)
+ return nexthop_same(&(ka->nh), &(ea->nh));
+
+ return 1;
}
/*
return -1;
}
- if (!KRT_CF->devroutes &&
- (e->attrs->dest == RTD_DEVICE) &&
- (e->attrs->source != RTS_STATIC_DEVICE))
- return -1;
+ if (!KRT_CF->devroutes && (e->attrs->source != RTS_STATIC_DEVICE))
+ {
+ struct nexthop *nh = &(e->attrs->nh);
+ for (; nh; nh = nh->next)
+ if (ipa_nonzero(nh->gw))
+ break;
+
+ if (!nh) /* Gone through all the nexthops and no explicit GW found */
+ return -1;
+ }
if (!krt_capable(e))
return -1;
projects / thirdparty / bird.git / commitdiff
