*/
#include <vnet/ip/ip.h>
-#include <vnet/fib/fib_entry.h>
+#include <vnet/ip/ip4_mtrie.h>
+#include <vnet/fib/ip4_fib.h>
+
+
+/**
+ * Global pool of IPv4 8bit PLYs
+ */
+ip4_fib_mtrie_8_ply_t *ip4_ply_pool;
always_inline u32
-ip4_fib_mtrie_leaf_is_non_empty (ip4_fib_mtrie_ply_t * p, u8 dst_byte)
+ip4_fib_mtrie_leaf_is_non_empty (ip4_fib_mtrie_8_ply_t * p, u8 dst_byte)
{
/*
* It's 'non-empty' if the length of the leaf stored is greater than the
return l;
}
-static void
-ply_init (ip4_fib_mtrie_ply_t * p,
- ip4_fib_mtrie_leaf_t init, u32 prefix_len, u32 ply_base_len)
-{
- /*
- * A leaf is 'empty' if it represents a leaf from the covering PLY
- * i.e. if the prefix length of the leaf is less than or equal to
- * the prefix length of the PLY
- */
- p->n_non_empty_leafs = (prefix_len > ply_base_len ?
- ARRAY_LEN (p->leaves) : 0);
- memset (p->dst_address_bits_of_leaves, prefix_len,
- sizeof (p->dst_address_bits_of_leaves));
- p->dst_address_bits_base = ply_base_len;
-
- /* Initialize leaves. */
-#ifdef CLIB_HAVE_VEC128
- {
- u32x4 *l, init_x4;
-
#ifndef __ALTIVEC__
- init_x4 = u32x4_splat (init);
+#define PLY_X4_SPLAT_INIT(init_x4, init) \
+ init_x4 = u32x4_splat (init);
#else
- {
- u32x4_union_t y;
- y.as_u32[0] = init;
- y.as_u32[1] = init;
- y.as_u32[2] = init;
- y.as_u32[3] = init;
- init_x4 = y.as_u32x4;
- }
+#define PLY_X4_SPLAT_INIT(init_x4, init) \
+{ \
+ u32x4_union_t y; \
+ y.as_u32[0] = init; \
+ y.as_u32[1] = init; \
+ y.as_u32[2] = init; \
+ y.as_u32[3] = init; \
+ init_x4 = y.as_u32x4; \
+}
#endif
- for (l = p->leaves_as_u32x4;
- l < p->leaves_as_u32x4 + ARRAY_LEN (p->leaves_as_u32x4); l += 4)
- {
- l[0] = init_x4;
- l[1] = init_x4;
- l[2] = init_x4;
- l[3] = init_x4;
- }
- }
+#ifdef CLIB_HAVE_VEC128
+#define PLY_INIT_LEAVES(p) \
+{ \
+ u32x4 *l, init_x4; \
+ \
+ PLY_X4_SPLAT_INIT(init_x4, init); \
+ for (l = p->leaves_as_u32x4; \
+ l < p->leaves_as_u32x4 + ARRAY_LEN (p->leaves_as_u32x4); \
+ l += 4) \
+ { \
+ l[0] = init_x4; \
+ l[1] = init_x4; \
+ l[2] = init_x4; \
+ l[3] = init_x4; \
+ } \
+}
#else
- {
- u32 *l;
-
- for (l = p->leaves; l < p->leaves + ARRAY_LEN (p->leaves); l += 4)
- {
- l[0] = init;
- l[1] = init;
- l[2] = init;
- l[3] = init;
- }
- }
+#define PLY_INIT_LEAVES(p) \
+{ \
+ u32 *l; \
+ \
+ for (l = p->leaves; l < p->leaves + ARRAY_LEN (p->leaves); l += 4) \
+ { \
+ l[0] = init; \
+ l[1] = init; \
+ l[2] = init; \
+ l[3] = init; \
+ } \
+}
#endif
+
+#define PLY_INIT(p, init, prefix_len, ply_base_len) \
+{ \
+ /* \
+ * A leaf is 'empty' if it represents a leaf from the covering PLY \
+ * i.e. if the prefix length of the leaf is less than or equal to \
+ * the prefix length of the PLY \
+ */ \
+ p->n_non_empty_leafs = (prefix_len > ply_base_len ? \
+ ARRAY_LEN (p->leaves) : 0); \
+ memset (p->dst_address_bits_of_leaves, prefix_len, \
+ sizeof (p->dst_address_bits_of_leaves)); \
+ p->dst_address_bits_base = ply_base_len; \
+ \
+ /* Initialize leaves. */ \
+ PLY_INIT_LEAVES(p); \
+}
+
+static void
+ply_8_init (ip4_fib_mtrie_8_ply_t * p,
+ ip4_fib_mtrie_leaf_t init, uword prefix_len, u32 ply_base_len)
+{
+ PLY_INIT (p, init, prefix_len, ply_base_len);
+}
+
+static void
+ply_16_init (ip4_fib_mtrie_16_ply_t * p,
+ ip4_fib_mtrie_leaf_t init, uword prefix_len)
+{
+ memset (p->dst_address_bits_of_leaves, prefix_len,
+ sizeof (p->dst_address_bits_of_leaves));
+ PLY_INIT_LEAVES (p);
}
static ip4_fib_mtrie_leaf_t
ip4_fib_mtrie_leaf_t init_leaf,
u32 leaf_prefix_len, u32 ply_base_len)
{
- ip4_fib_mtrie_ply_t *p;
+ ip4_fib_mtrie_8_ply_t *p;
/* Get cache aligned ply. */
- pool_get_aligned (m->ply_pool, p, sizeof (p[0]));
+ pool_get_aligned (ip4_ply_pool, p, CLIB_CACHE_LINE_BYTES);
- ply_init (p, init_leaf, leaf_prefix_len, ply_base_len);
- return ip4_fib_mtrie_leaf_set_next_ply_index (p - m->ply_pool);
+ ply_8_init (p, init_leaf, leaf_prefix_len, ply_base_len);
+ return ip4_fib_mtrie_leaf_set_next_ply_index (p - ip4_ply_pool);
}
-always_inline ip4_fib_mtrie_ply_t *
+always_inline ip4_fib_mtrie_8_ply_t *
get_next_ply_for_leaf (ip4_fib_mtrie_t * m, ip4_fib_mtrie_leaf_t l)
{
uword n = ip4_fib_mtrie_leaf_get_next_ply_index (l);
- /* It better not be the root ply. */
- ASSERT (n != 0);
- return pool_elt_at_index (m->ply_pool, n);
+
+ return pool_elt_at_index (ip4_ply_pool, n);
}
-static void
-ply_free (ip4_fib_mtrie_t * m, ip4_fib_mtrie_ply_t * p)
+void
+ip4_mtrie_free (ip4_fib_mtrie_t * m)
{
- uword i, is_root;
-
- is_root = p - m->ply_pool == 0;
-
- for (i = 0; i < ARRAY_LEN (p->leaves); i++)
+ /* the root ply is embedded so the is nothing to do,
+ * the assumption being that the IP4 FIB table has emptied the trie
+ * before deletion.
+ */
+#if CLIB_DEBUG > 0
+ int i;
+ for (i = 0; i < ARRAY_LEN (m->root_ply.leaves); i++)
{
- ip4_fib_mtrie_leaf_t l = p->leaves[i];
- if (ip4_fib_mtrie_leaf_is_next_ply (l))
- ply_free (m, get_next_ply_for_leaf (m, l));
+ ASSERT (!ip4_fib_mtrie_leaf_is_next_ply (m->root_ply.leaves[i]));
}
-
- if (is_root)
- ply_init (p, IP4_FIB_MTRIE_LEAF_EMPTY, /* prefix_len */ 0, 0);
- else
- pool_put (m->ply_pool, p);
+#endif
}
void
-ip4_fib_free (ip4_fib_mtrie_t * m)
+ip4_mtrie_init (ip4_fib_mtrie_t * m)
{
- ip4_fib_mtrie_ply_t *root_ply = pool_elt_at_index (m->ply_pool, 0);
- ply_free (m, root_ply);
+ ply_16_init (&m->root_ply, IP4_FIB_MTRIE_LEAF_EMPTY, 0);
}
typedef struct
static void
set_ply_with_more_specific_leaf (ip4_fib_mtrie_t * m,
- ip4_fib_mtrie_ply_t * ply,
+ ip4_fib_mtrie_8_ply_t * ply,
ip4_fib_mtrie_leaf_t new_leaf,
uword new_leaf_dst_address_bits)
{
/* Recurse into sub plies. */
if (!ip4_fib_mtrie_leaf_is_terminal (old_leaf))
{
- ip4_fib_mtrie_ply_t *sub_ply = get_next_ply_for_leaf (m, old_leaf);
+ ip4_fib_mtrie_8_ply_t *sub_ply =
+ get_next_ply_for_leaf (m, old_leaf);
set_ply_with_more_specific_leaf (m, sub_ply, new_leaf,
new_leaf_dst_address_bits);
}
static void
set_leaf (ip4_fib_mtrie_t * m,
- ip4_fib_mtrie_set_unset_leaf_args_t * a,
+ const ip4_fib_mtrie_set_unset_leaf_args_t * a,
u32 old_ply_index, u32 dst_address_byte_index)
{
ip4_fib_mtrie_leaf_t old_leaf, new_leaf;
i32 n_dst_bits_next_plies;
u8 dst_byte;
+ ip4_fib_mtrie_8_ply_t *old_ply;
+
+ old_ply = pool_elt_at_index (ip4_ply_pool, old_ply_index);
ASSERT (a->dst_address_length >= 0 && a->dst_address_length <= 32);
ASSERT (dst_address_byte_index < ARRAY_LEN (a->dst_address.as_u8));
+ /* how many bits of the destination address are in the next PLY */
n_dst_bits_next_plies =
a->dst_address_length - BITS (u8) * (dst_address_byte_index + 1);
/* Number of bits next plies <= 0 => insert leaves this ply. */
if (n_dst_bits_next_plies <= 0)
{
+ /* The mask length of the address to insert maps to this ply */
uword i, n_dst_bits_this_ply, old_leaf_is_terminal;
+ /* The number of bits, and hence slots/buckets, we will fill */
n_dst_bits_this_ply = clib_min (8, -n_dst_bits_next_plies);
ASSERT ((a->dst_address.as_u8[dst_address_byte_index] &
pow2_mask (n_dst_bits_this_ply)) == 0);
+ /* Starting at the value of the byte at this section of the v4 address
+ * fill the buckets/slots of the ply */
for (i = dst_byte; i < dst_byte + (1 << n_dst_bits_this_ply); i++)
{
- ip4_fib_mtrie_ply_t *old_ply, *new_ply;
-
- old_ply = pool_elt_at_index (m->ply_pool, old_ply_index);
+ ip4_fib_mtrie_8_ply_t *new_ply;
old_leaf = old_ply->leaves[i];
old_leaf_is_terminal = ip4_fib_mtrie_leaf_is_terminal (old_leaf);
- /* Is leaf to be inserted more specific? */
if (a->dst_address_length >= old_ply->dst_address_bits_of_leaves[i])
{
+ /* The new leaf is more or equally specific than the one currently
+ * occupying the slot */
new_leaf = ip4_fib_mtrie_leaf_set_adj_index (a->adj_index);
if (old_leaf_is_terminal)
{
+ /* The current leaf is terminal, we can replace it with
+ * the new one */
old_ply->n_non_empty_leafs -=
ip4_fib_mtrie_leaf_is_non_empty (old_ply, i);
+
old_ply->dst_address_bits_of_leaves[i] =
a->dst_address_length;
__sync_val_compare_and_swap (&old_ply->leaves[i], old_leaf,
}
else
{
- /* Existing leaf points to another ply. We need to place new_leaf into all
- more specific slots. */
+ /* Existing leaf points to another ply. We need to place
+ * new_leaf into all more specific slots. */
new_ply = get_next_ply_for_leaf (m, old_leaf);
set_ply_with_more_specific_leaf (m, new_ply, new_leaf,
a->dst_address_length);
}
}
-
else if (!old_leaf_is_terminal)
{
+ /* The current leaf is less specific and not termial (i.e. a ply),
+ * recurse on down the trie */
new_ply = get_next_ply_for_leaf (m, old_leaf);
- set_leaf (m, a, new_ply - m->ply_pool,
+ set_leaf (m, a, new_ply - ip4_ply_pool,
dst_address_byte_index + 1);
}
+ /*
+ * else
+ * the route we are adding is less specific than the leaf currently
+ * occupying this slot. leave it there
+ */
}
}
else
{
- ip4_fib_mtrie_ply_t *old_ply, *new_ply;
+ /* The address to insert requires us to move down at a lower level of
+ * the trie - recurse on down */
+ ip4_fib_mtrie_8_ply_t *new_ply;
u8 ply_base_len;
ply_base_len = 8 * (dst_address_byte_index + 1);
- old_ply = pool_elt_at_index (m->ply_pool, old_ply_index);
+
old_leaf = old_ply->leaves[dst_byte];
+
if (ip4_fib_mtrie_leaf_is_terminal (old_leaf))
{
+ /* There is a leaf occupying the slot. Replace it with a new ply */
old_ply->n_non_empty_leafs -=
ip4_fib_mtrie_leaf_is_non_empty (old_ply, dst_byte);
new_ply = get_next_ply_for_leaf (m, new_leaf);
/* Refetch since ply_create may move pool. */
- old_ply = pool_elt_at_index (m->ply_pool, old_ply_index);
+ old_ply = pool_elt_at_index (ip4_ply_pool, old_ply_index);
__sync_val_compare_and_swap (&old_ply->leaves[dst_byte], old_leaf,
new_leaf);
ASSERT (old_ply->leaves[dst_byte] == new_leaf);
old_ply->dst_address_bits_of_leaves[dst_byte] = ply_base_len;
- /* Account for the ply we just created. */
- old_ply->n_non_empty_leafs += 1;
+ old_ply->n_non_empty_leafs +=
+ ip4_fib_mtrie_leaf_is_non_empty (old_ply, dst_byte);
ASSERT (old_ply->n_non_empty_leafs >= 0);
}
else
new_ply = get_next_ply_for_leaf (m, old_leaf);
- set_leaf (m, a, new_ply - m->ply_pool, dst_address_byte_index + 1);
+ set_leaf (m, a, new_ply - ip4_ply_pool, dst_address_byte_index + 1);
+ }
+}
+
+static void
+set_root_leaf (ip4_fib_mtrie_t * m,
+ const ip4_fib_mtrie_set_unset_leaf_args_t * a)
+{
+ ip4_fib_mtrie_leaf_t old_leaf, new_leaf;
+ ip4_fib_mtrie_16_ply_t *old_ply;
+ i32 n_dst_bits_next_plies;
+ u16 dst_byte;
+
+ old_ply = &m->root_ply;
+
+ ASSERT (a->dst_address_length >= 0 && a->dst_address_length <= 32);
+
+ /* how many bits of the destination address are in the next PLY */
+ n_dst_bits_next_plies = a->dst_address_length - BITS (u16);
+
+ dst_byte = a->dst_address.as_u16[0];
+
+ /* Number of bits next plies <= 0 => insert leaves this ply. */
+ if (n_dst_bits_next_plies <= 0)
+ {
+ /* The mask length of the address to insert maps to this ply */
+ uword i, n_dst_bits_this_ply, old_leaf_is_terminal;
+
+ /* The number of bits, and hence slots/buckets, we will fill */
+ n_dst_bits_this_ply = 16 - a->dst_address_length;
+ ASSERT ((clib_host_to_net_u16 (a->dst_address.as_u16[0]) &
+ pow2_mask (n_dst_bits_this_ply)) == 0);
+
+ /* Starting at the value of the byte at this section of the v4 address
+ * fill the buckets/slots of the ply */
+ for (i = 0; i < (1 << n_dst_bits_this_ply); i++)
+ {
+ ip4_fib_mtrie_8_ply_t *new_ply;
+ u16 slot;
+
+ slot = clib_net_to_host_u16 (dst_byte);
+ slot += i;
+ slot = clib_host_to_net_u16 (slot);
+
+ old_leaf = old_ply->leaves[slot];
+ old_leaf_is_terminal = ip4_fib_mtrie_leaf_is_terminal (old_leaf);
+
+ if (a->dst_address_length >=
+ old_ply->dst_address_bits_of_leaves[slot])
+ {
+ /* The new leaf is more or equally specific than the one currently
+ * occupying the slot */
+ new_leaf = ip4_fib_mtrie_leaf_set_adj_index (a->adj_index);
+
+ if (old_leaf_is_terminal)
+ {
+ /* The current leaf is terminal, we can replace it with
+ * the new one */
+ old_ply->dst_address_bits_of_leaves[slot] =
+ a->dst_address_length;
+ __sync_val_compare_and_swap (&old_ply->leaves[slot],
+ old_leaf, new_leaf);
+ ASSERT (old_ply->leaves[slot] == new_leaf);
+ }
+ else
+ {
+ /* Existing leaf points to another ply. We need to place
+ * new_leaf into all more specific slots. */
+ new_ply = get_next_ply_for_leaf (m, old_leaf);
+ set_ply_with_more_specific_leaf (m, new_ply, new_leaf,
+ a->dst_address_length);
+ }
+ }
+ else if (!old_leaf_is_terminal)
+ {
+ /* The current leaf is less specific and not termial (i.e. a ply),
+ * recurse on down the trie */
+ new_ply = get_next_ply_for_leaf (m, old_leaf);
+ set_leaf (m, a, new_ply - ip4_ply_pool, 2);
+ }
+ /*
+ * else
+ * the route we are adding is less specific than the leaf currently
+ * occupying this slot. leave it there
+ */
+ }
+ }
+ else
+ {
+ /* The address to insert requires us to move down at a lower level of
+ * the trie - recurse on down */
+ ip4_fib_mtrie_8_ply_t *new_ply;
+ u8 ply_base_len;
+
+ ply_base_len = 16;
+
+ old_leaf = old_ply->leaves[dst_byte];
+
+ if (ip4_fib_mtrie_leaf_is_terminal (old_leaf))
+ {
+ /* There is a leaf occupying the slot. Replace it with a new ply */
+ new_leaf = ply_create (m, old_leaf,
+ clib_max (old_ply->dst_address_bits_of_leaves
+ [dst_byte], ply_base_len),
+ ply_base_len);
+ new_ply = get_next_ply_for_leaf (m, new_leaf);
+
+ __sync_val_compare_and_swap (&old_ply->leaves[dst_byte], old_leaf,
+ new_leaf);
+ ASSERT (old_ply->leaves[dst_byte] == new_leaf);
+ old_ply->dst_address_bits_of_leaves[dst_byte] = ply_base_len;
+ }
+ else
+ new_ply = get_next_ply_for_leaf (m, old_leaf);
+
+ set_leaf (m, a, new_ply - ip4_ply_pool, 2);
}
}
static uword
unset_leaf (ip4_fib_mtrie_t * m,
- ip4_fib_mtrie_set_unset_leaf_args_t * a,
- ip4_fib_mtrie_ply_t * old_ply, u32 dst_address_byte_index)
+ const ip4_fib_mtrie_set_unset_leaf_args_t * a,
+ ip4_fib_mtrie_8_ply_t * old_ply, u32 dst_address_byte_index)
{
ip4_fib_mtrie_leaf_t old_leaf, del_leaf;
i32 n_dst_bits_next_plies;
ASSERT (old_ply->n_non_empty_leafs >= 0);
if (old_ply->n_non_empty_leafs == 0 && dst_address_byte_index > 0)
{
- pool_put (m->ply_pool, old_ply);
+ pool_put (ip4_ply_pool, old_ply);
/* Old ply was deleted. */
return 1;
}
return 0;
}
-void
-ip4_mtrie_init (ip4_fib_mtrie_t * m)
+static void
+unset_root_leaf (ip4_fib_mtrie_t * m,
+ const ip4_fib_mtrie_set_unset_leaf_args_t * a)
{
- ip4_fib_mtrie_leaf_t root;
- memset (m, 0, sizeof (m[0]));
- root = ply_create (m, IP4_FIB_MTRIE_LEAF_EMPTY, 0, 0);
- ASSERT (ip4_fib_mtrie_leaf_get_next_ply_index (root) == 0);
-}
+ ip4_fib_mtrie_leaf_t old_leaf, del_leaf;
+ i32 n_dst_bits_next_plies;
+ i32 i, n_dst_bits_this_ply, old_leaf_is_terminal;
+ u16 dst_byte;
+ ip4_fib_mtrie_16_ply_t *old_ply;
-void
-ip4_fib_mtrie_add_del_route (ip4_fib_t * fib,
- ip4_address_t dst_address,
- u32 dst_address_length,
- u32 adj_index, u32 is_del)
-{
- ip4_fib_mtrie_t *m = &fib->mtrie;
- ip4_fib_mtrie_ply_t *root_ply;
- ip4_fib_mtrie_set_unset_leaf_args_t a;
- ip4_main_t *im = &ip4_main;
+ ASSERT (a->dst_address_length >= 0 && a->dst_address_length <= 32);
- ASSERT (m->ply_pool != 0);
+ old_ply = &m->root_ply;
+ n_dst_bits_next_plies = a->dst_address_length - BITS (u16);
- root_ply = pool_elt_at_index (m->ply_pool, 0);
+ dst_byte = a->dst_address.as_u16[0];
- /* Honor dst_address_length. Fib masks are in network byte order */
- dst_address.as_u32 &= im->fib_masks[dst_address_length];
- a.dst_address = dst_address;
- a.dst_address_length = dst_address_length;
- a.adj_index = adj_index;
+ n_dst_bits_this_ply = (n_dst_bits_next_plies <= 0 ?
+ (16 - a->dst_address_length) : 0);
- if (!is_del)
- {
- set_leaf (m, &a, /* ply_index */ 0, /* dst_address_byte_index */ 0);
- }
- else
+ del_leaf = ip4_fib_mtrie_leaf_set_adj_index (a->adj_index);
+
+ /* Starting at the value of the byte at this section of the v4 address
+ * fill the buckets/slots of the ply */
+ for (i = 0; i < (1 << n_dst_bits_this_ply); i++)
{
- ip4_main_t *im = &ip4_main;
+ u16 slot;
+
+ slot = clib_net_to_host_u16 (dst_byte);
+ slot += i;
+ slot = clib_host_to_net_u16 (slot);
- if (dst_address_length)
+ old_leaf = old_ply->leaves[slot];
+ old_leaf_is_terminal = ip4_fib_mtrie_leaf_is_terminal (old_leaf);
+
+ if (old_leaf == del_leaf
+ || (!old_leaf_is_terminal
+ && unset_leaf (m, a, get_next_ply_for_leaf (m, old_leaf), 2)))
{
- word i;
+ old_ply->leaves[slot] =
+ ip4_fib_mtrie_leaf_set_adj_index (a->cover_adj_index);
+ old_ply->dst_address_bits_of_leaves[slot] = a->cover_address_length;
+ }
+ }
+}
- /* If the ply was not deleted, then we need to fill the
- * bucket just reset will the leaf from the less specfic
- * cover.
- * Find next less specific route and insert into mtrie. */
- for (i = dst_address_length - 1; i >= 0; i--)
- {
- uword *p;
- index_t lbi;
- ip4_address_t key;
+void
+ip4_fib_mtrie_route_add (ip4_fib_mtrie_t * m,
+ const ip4_address_t * dst_address,
+ u32 dst_address_length, u32 adj_index)
+{
+ ip4_fib_mtrie_set_unset_leaf_args_t a;
+ ip4_main_t *im = &ip4_main;
- if (!fib->fib_entry_by_dst_address[i])
- continue;
+ /* Honor dst_address_length. Fib masks are in network byte order */
+ a.dst_address.as_u32 = (dst_address->as_u32 &
+ im->fib_masks[dst_address_length]);
+ a.dst_address_length = dst_address_length;
+ a.adj_index = adj_index;
- key.as_u32 = dst_address.as_u32 & im->fib_masks[i];
- p = hash_get (fib->fib_entry_by_dst_address[i], key.as_u32);
- if (p)
- {
- lbi = fib_entry_contribute_ip_forwarding (p[0])->dpoi_index;
- if (INDEX_INVALID == lbi)
- continue;
+ set_root_leaf (m, &a);
+}
- a.cover_adj_index = lbi;
- a.cover_address_length = i;
+void
+ip4_fib_mtrie_route_del (ip4_fib_mtrie_t * m,
+ const ip4_address_t * dst_address,
+ u32 dst_address_length,
+ u32 adj_index,
+ u32 cover_address_length, u32 cover_adj_index)
+{
+ ip4_fib_mtrie_set_unset_leaf_args_t a;
+ ip4_main_t *im = &ip4_main;
- break;
- }
- }
- }
- else
- {
- a.cover_adj_index = 0;
- a.cover_address_length = 0;
- }
+ /* Honor dst_address_length. Fib masks are in network byte order */
+ a.dst_address.as_u32 = (dst_address->as_u32 &
+ im->fib_masks[dst_address_length]);
+ a.dst_address_length = dst_address_length;
+ a.adj_index = adj_index;
+ a.cover_adj_index = cover_adj_index;
+ a.cover_address_length = cover_address_length;
- /* the top level ply is never removed, so we can ignore the return code */
- unset_leaf (m, &a, root_ply, 0);
- }
+ /* the top level ply is never removed */
+ unset_root_leaf (m, &a);
}
/* Returns number of bytes of memory used by mtrie. */
static uword
-mtrie_memory_usage (ip4_fib_mtrie_t * m, ip4_fib_mtrie_ply_t * p)
+mtrie_ply_memory_usage (ip4_fib_mtrie_t * m, ip4_fib_mtrie_8_ply_t * p)
{
uword bytes, i;
- if (!p)
- {
- if (pool_is_free_index (m->ply_pool, 0))
- return 0;
- p = pool_elt_at_index (m->ply_pool, 0);
- }
-
bytes = sizeof (p[0]);
for (i = 0; i < ARRAY_LEN (p->leaves); i++)
{
ip4_fib_mtrie_leaf_t l = p->leaves[i];
if (ip4_fib_mtrie_leaf_is_next_ply (l))
- bytes += mtrie_memory_usage (m, get_next_ply_for_leaf (m, l));
+ bytes += mtrie_ply_memory_usage (m, get_next_ply_for_leaf (m, l));
+ }
+
+ return bytes;
+}
+
+/* Returns number of bytes of memory used by mtrie. */
+static uword
+mtrie_memory_usage (ip4_fib_mtrie_t * m)
+{
+ uword bytes, i;
+
+ bytes = sizeof (*m);
+ for (i = 0; i < ARRAY_LEN (m->root_ply.leaves); i++)
+ {
+ ip4_fib_mtrie_leaf_t l = m->root_ply.leaves[i];
+ if (ip4_fib_mtrie_leaf_is_next_ply (l))
+ bytes += mtrie_ply_memory_usage (m, get_next_ply_for_leaf (m, l));
}
return bytes;
return s;
}
+#define FORMAT_PLY(s, _p, _i, _base_address, _ply_max_len, _indent) \
+({ \
+ u32 a, ia_length; \
+ ip4_address_t ia; \
+ ip4_fib_mtrie_leaf_t _l = p->leaves[(_i)]; \
+ \
+ a = (_base_address) + ((_i) << (32 - (_ply_max_len))); \
+ ia.as_u32 = clib_host_to_net_u32 (a); \
+ ia_length = (_p)->dst_address_bits_of_leaves[(_i)]; \
+ s = format (s, "\n%U%20U %U", \
+ format_white_space, (_indent) + 2, \
+ format_ip4_address_and_length, &ia, ia_length, \
+ format_ip4_fib_mtrie_leaf, _l); \
+ \
+ if (ip4_fib_mtrie_leaf_is_next_ply (_l)) \
+ s = format (s, "\n%U%U", \
+ format_white_space, (_indent) + 2, \
+ format_ip4_fib_mtrie_ply, m, a, \
+ ip4_fib_mtrie_leaf_get_next_ply_index (_l)); \
+ s; \
+})
+
static u8 *
format_ip4_fib_mtrie_ply (u8 * s, va_list * va)
{
ip4_fib_mtrie_t *m = va_arg (*va, ip4_fib_mtrie_t *);
u32 base_address = va_arg (*va, u32);
u32 ply_index = va_arg (*va, u32);
- u32 dst_address_byte_index = va_arg (*va, u32);
- ip4_fib_mtrie_ply_t *p;
- uword i, indent;
+ ip4_fib_mtrie_8_ply_t *p;
+ uword indent;
+ int i;
- p = pool_elt_at_index (m->ply_pool, ply_index);
+ p = pool_elt_at_index (ip4_ply_pool, ply_index);
indent = format_get_indent (s);
- s =
- format (s, "ply index %d, %d non-empty leaves", ply_index,
- p->n_non_empty_leafs);
+ s = format (s, "ply index %d, %d non-empty leaves", ply_index,
+ p->n_non_empty_leafs);
+
for (i = 0; i < ARRAY_LEN (p->leaves); i++)
{
- ip4_fib_mtrie_leaf_t l = p->leaves[i];
-
if (ip4_fib_mtrie_leaf_is_non_empty (p, i))
{
- u32 a, ia_length;
- ip4_address_t ia;
-
- a = base_address + (i << (24 - 8 * dst_address_byte_index));
- ia.as_u32 = clib_host_to_net_u32 (a);
- if (ip4_fib_mtrie_leaf_is_terminal (l))
- ia_length = p->dst_address_bits_of_leaves[i];
- else
- ia_length = 8 * (1 + dst_address_byte_index);
- s = format (s, "\n%U%20U %U",
- format_white_space, indent + 2,
- format_ip4_address_and_length, &ia, ia_length,
- format_ip4_fib_mtrie_leaf, l);
-
- if (ip4_fib_mtrie_leaf_is_next_ply (l))
- s = format (s, "\n%U%U",
- format_white_space, indent + 2,
- format_ip4_fib_mtrie_ply, m, a,
- ip4_fib_mtrie_leaf_get_next_ply_index (l),
- dst_address_byte_index + 1);
+ FORMAT_PLY (s, p, i, base_address,
+ p->dst_address_bits_base + 8, indent);
}
}
format_ip4_fib_mtrie (u8 * s, va_list * va)
{
ip4_fib_mtrie_t *m = va_arg (*va, ip4_fib_mtrie_t *);
+ ip4_fib_mtrie_16_ply_t *p;
+ u32 base_address = 0;
+ int i;
- s = format (s, "%d plies, memory usage %U",
- pool_elts (m->ply_pool),
- format_memory_size, mtrie_memory_usage (m, 0));
+ s = format (s, "%d plies, memory usage %U\n",
+ pool_elts (ip4_ply_pool),
+ format_memory_size, mtrie_memory_usage (m));
+ s = format (s, "root-ply");
+ p = &m->root_ply;
- if (pool_elts (m->ply_pool) > 0)
+ for (i = 0; i < ARRAY_LEN (p->leaves); i++)
{
- ip4_address_t base_address;
- base_address.as_u32 = 0;
- s =
- format (s, "\n %U", format_ip4_fib_mtrie_ply, m, base_address, 0, 0);
+ u16 slot;
+
+ slot = clib_host_to_net_u16 (i);
+
+ if (p->dst_address_bits_of_leaves[slot] > 0)
+ {
+ FORMAT_PLY (s, p, slot, base_address, 16, 2);
+ }
}
return s;
}
+static clib_error_t *
+ip4_mtrie_module_init (vlib_main_t * vm)
+{
+ /* Burn one ply so index 0 is taken */
+ CLIB_UNUSED (ip4_fib_mtrie_8_ply_t * p);
+
+ pool_get (ip4_ply_pool, p);
+
+ return (NULL);
+}
+
+VLIB_INIT_FUNCTION (ip4_mtrie_module_init);
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff