#include <stddef.h>
+const char * const rta_src_names[RTS_MAX] = {
+ [RTS_DUMMY] = "",
+ [RTS_STATIC] = "static",
+ [RTS_INHERIT] = "inherit",
+ [RTS_DEVICE] = "device",
+ [RTS_STATIC_DEVICE] = "static-device",
+ [RTS_REDIRECT] = "redirect",
+ [RTS_RIP] = "RIP",
+ [RTS_OSPF] = "OSPF",
+ [RTS_OSPF_IA] = "OSPF-IA",
+ [RTS_OSPF_EXT1] = "OSPF-E1",
+ [RTS_OSPF_EXT2] = "OSPF-E2",
+ [RTS_BGP] = "BGP",
+ [RTS_PIPE] = "pipe",
+ [RTS_BABEL] = "Babel",
+ [RTS_RPKI] = "RPKI",
+};
+
+const char * rta_dest_names[RTD_MAX] = {
+ [RTD_NONE] = "",
+ [RTD_UNICAST] = "unicast",
+ [RTD_BLACKHOLE] = "blackhole",
+ [RTD_UNREACHABLE] = "unreachable",
+ [RTD_PROHIBIT] = "prohibited",
+};
+
pool *rta_pool;
-static slab *rta_slab;
-static slab *mpnh_slab;
+static slab *rta_slab_[4];
+static slab *nexthop_slab_[4];
static slab *rte_src_slab;
static struct idm src_ids;
static HASH(struct rte_src) src_hash;
-struct protocol *attr_class_to_protocol[EAP_MAX];
-
-
static void
rte_src_init(void)
{
*/
static inline u32
-mpnh_hash(struct mpnh *x)
+nexthop_hash(struct nexthop *x)
{
u32 h = 0;
for (; x; x = x->next)
- h ^= ipa_hash(x->gw);
+ {
+ h ^= ipa_hash(x->gw) ^ (h << 5) ^ (h >> 9);
+
+ for (int i = 0; i < x->labels; i++)
+ h ^= x->label[i] ^ (h << 6) ^ (h >> 7);
+ }
return h;
}
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))
+ {
+ if (!ipa_equal(x->gw, y->gw) || (x->iface != y->iface) ||
+ (x->flags != y->flags) || (x->weight != y->weight) ||
+ (x->labels != y->labels))
return 0;
+ for (int i = 0; i < x->labels; i++)
+ if (x->label[i] != y->label[i])
+ return 0;
+ }
+
return x == y;
}
static int
-mpnh_compare_node(struct mpnh *x, struct mpnh *y)
+nexthop_compare_node(struct nexthop *x, struct nexthop *y)
{
int r;
if (!y)
return -1;
+ /* Should we also compare flags ? */
+
r = ((int) y->weight) - ((int) x->weight);
if (r)
return r;
if (r)
return r;
+ r = ((int) y->labels) - ((int) x->labels);
+ if (r)
+ return r;
+
+ for (int i = 0; i < y->labels; i++)
+ {
+ r = ((int) y->label[i]) - ((int) x->label[i]);
+ if (r)
+ return 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));
- n->gw = src->gw;
- n->iface = src->iface;
+ struct nexthop *n = lp_alloc(lp, nexthop_size(src));
+
+ memcpy(n, src, nexthop_size(src));
n->next = NULL;
- n->weight = src->weight;
+
return n;
}
/**
- * 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))
{
- int cmp = mpnh_compare_node(*n, x);
+ int cmp = nexthop_compare_node(*n, x);
if (cmp < 0)
continue;
}
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 inline slab *
+nexthop_slab(struct nexthop *nh)
{
- struct mpnh *first = NULL;
- struct mpnh **last = &first;
+ return nexthop_slab_[MIN(nh->labels, 3)];
+}
+
+static struct nexthop *
+nexthop_copy(struct nexthop *o)
+{
+ 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(o));
n->gw = o->gw;
n->iface = o->iface;
n->next = NULL;
+ n->flags = o->flags;
n->weight = o->weight;
+ n->labels = o->labels;
+ for (int i=0; i<o->labels; i++)
+ n->label[i] = o->label[i];
*last = n;
last = &(n->next);
}
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);
o = n;
}
}
while (ss);
}
+/**
+ * In place discard duplicates, undefs and temporary attributes in sorted
+ * ea_list. We use stable sort for this reason.
+ **/
static inline void
ea_do_prune(ea_list *e)
{
eattr *s, *d, *l, *s0;
int i = 0;
- /* Discard duplicates and undefs. Do you remember sorting was stable? */
- s = d = e->attrs;
- l = e->attrs + e->count;
+ s = d = e->attrs; /* Beginning of the list. @s is source, @d is destination. */
+ l = e->attrs + e->count; /* End of the list */
+
+ /* Walk from begin to end. */
while (s < l)
{
s0 = s++;
+ /* Find a consecutive block of the same attribute */
while (s < l && s->id == s[-1].id)
s++;
- /* s0 is the most recent version, s[-1] the oldest one */
- if ((s0->type & EAF_TYPE_MASK) != EAF_TYPE_UNDEF)
- {
- *d = *s0;
- d->type = (d->type & ~EAF_ORIGINATED) | (s[-1].type & EAF_ORIGINATED);
- d++;
- i++;
- }
+
+ /* Now s0 is the most recent version, s[-1] the oldest one */
+ /* Drop undefs */
+ 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;
+
+ /* Preserve info whether it originated locally */
+ d->type = (d->type & ~(EAF_ORIGINATED|EAF_FRESH)) | (s[-1].type & EAF_ORIGINATED);
+
+ /* Next destination */
+ d++;
+ i++;
}
+
e->count = i;
}
byte buf[CLI_MSG_SIZE];
byte *pos = buf, *end = buf + sizeof(buf);
- if (p = attr_class_to_protocol[EA_PROTO(e->id)])
+ if (EA_IS_CUSTOM(e->id))
+ {
+ const char *name = ea_custom_name(e->id);
+ if (name)
+ {
+ pos += bsprintf(pos, "%s", name);
+ status = GA_NAME;
+ }
+ else
+ pos += bsprintf(pos, "%02x.", EA_PROTO(e->id));
+ }
+ else if (p = class_to_protocol[EA_PROTO(e->id)])
{
pos += bsprintf(pos, "%s.", p->name);
if (p->get_attr)
#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);
#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
return (x->src == y->src &&
x->source == y->source &&
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->from, y->from) &&
- x->iface == y->iface &&
x->hostentry == y->hostentry &&
- mpnh_same(x->nexthops, y->nexthops) &&
+ nexthop_same(&(x->nh), &(y->nh)) &&
ea_same(x->eattrs, y->eattrs));
}
+static inline slab *
+rta_slab(rta *a)
+{
+ return rta_slab_[a->nh.labels > 2 ? 3 : a->nh.labels];
+}
+
static rta *
rta_copy(rta *o)
{
- rta *r = sl_alloc(rta_slab);
+ rta *r = sl_alloc(rta_slab(o));
- memcpy(r, o, sizeof(rta));
+ memcpy(r, o, rta_size(o));
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;
}
ASSERT(!(o->aflags & RTAF_CACHED));
if (o->eattrs)
- {
- if (o->eattrs->next) /* Multiple ea_list's, need to merge them */
- {
- ea_list *ml = alloca(ea_scan(o->eattrs));
- ea_merge(o->eattrs, ml);
- o->eattrs = ml;
- }
- ea_sort(o->eattrs);
- }
+ ea_normalize(o->eattrs);
h = rta_hash(o);
for(r=rta_hash_table[h & rta_cache_mask]; r; r=r->next)
*a->pprev = a->next;
if (a->next)
a->next->pprev = a->pprev;
- 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);
+ a->aflags = 0; /* Poison the entry */
+ sl_free(rta_slab(a), a);
}
rta *
rta_do_cow(rta *o, linpool *lp)
{
- rta *r = lp_alloc(lp, sizeof(rta));
- memcpy(r, o, sizeof(rta));
+ rta *r = lp_alloc(lp, rta_size(o));
+ memcpy(r, o, rta_size(o));
+ for (struct nexthop **nhn = &(r->nh.next), *nho = o->nh.next; nho; nho = nho->next)
+ {
+ *nhn = lp_alloc(lp, nexthop_size(nho));
+ memcpy(*nhn, nho, nexthop_size(nho));
+ nhn = &((*nhn)->next);
+ }
r->aflags = 0;
r->uc = 0;
return r;
static char *rts[] = { "RTS_DUMMY", "RTS_STATIC", "RTS_INHERIT", "RTS_DEVICE",
"RTS_STAT_DEV", "RTS_REDIR", "RTS_RIP",
"RTS_OSPF", "RTS_OSPF_IA", "RTS_OSPF_EXT1",
- "RTS_OSPF_EXT2", "RTS_BGP", "RTS_PIPE", "RTS_BABEL" };
- static char *rtc[] = { "", " BC", " MC", " AC" };
+ "RTS_OSPF_EXT2", "RTS_BGP", "RTS_PIPE", "RTS_BABEL" };
static char *rtd[] = { "", " DEV", " HOLE", " UNREACH", " PROHIBIT" };
- debug("p=%s uc=%d %s %s%s%s h=%04x",
- a->src->proto->name, a->uc, rts[a->source], ip_scope_text(a->scope), rtc[a->cast],
+ debug("p=%s uc=%d %s %s%s h=%04x",
+ a->src->proto->name, a->uc, rts[a->source], ip_scope_text(a->scope),
rtd[a->dest], a->hash_key);
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);
+ if (nh->labels) debug(" L %d", nh->label[0]);
+ for (int i=1; i<nh->labels; i++)
+ debug("/%d", nh->label[i]);
+ debug(" [%s]", nh->iface ? nh->iface->name : "???");
+ }
if (a->eattrs)
{
debug(" EA: ");
}
void
-rta_show(struct cli *c, rta *a, ea_list *eal)
+rta_show(struct cli *c, rta *a)
{
- static char *src_names[] = { "dummy", "static", "inherit", "device", "static-device", "redirect",
- "RIP", "OSPF", "OSPF-IA", "OSPF-E1", "OSPF-E2", "BGP", "pipe" };
- static char *cast_names[] = { "unicast", "broadcast", "multicast", "anycast" };
- int i;
+ cli_printf(c, -1008, "\tType: %s %s", rta_src_names[a->source], ip_scope_text(a->scope));
- cli_printf(c, -1008, "\tType: %s %s %s", src_names[a->source], cast_names[a->cast], ip_scope_text(a->scope));
- if (!eal)
- eal = a->eattrs;
- for(; eal; eal=eal->next)
- for(i=0; i<eal->count; i++)
+ for(ea_list *eal = a->eattrs; eal; eal=eal->next)
+ for(int i=0; i<eal->count; i++)
ea_show(c, &eal->attrs[i]);
}
rta_init(void)
{
rta_pool = rp_new(&root_pool, "Attributes");
- rta_slab = sl_new(rta_pool, sizeof(rta));
- mpnh_slab = sl_new(rta_pool, sizeof(struct mpnh));
+
+ rta_slab_[0] = sl_new(rta_pool, sizeof(rta));
+ rta_slab_[1] = sl_new(rta_pool, sizeof(rta) + sizeof(u32));
+ rta_slab_[2] = sl_new(rta_pool, sizeof(rta) + sizeof(u32)*2);
+ rta_slab_[3] = sl_new(rta_pool, sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK);
+
+ nexthop_slab_[0] = sl_new(rta_pool, sizeof(struct nexthop));
+ nexthop_slab_[1] = sl_new(rta_pool, sizeof(struct nexthop) + sizeof(u32));
+ nexthop_slab_[2] = sl_new(rta_pool, sizeof(struct nexthop) + sizeof(u32)*2);
+ nexthop_slab_[3] = sl_new(rta_pool, sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK);
+
rta_alloc_hash();
rte_src_init();
}
projects / thirdparty / bird.git / blobdiff