blob: ccf8e22f5a7eba197164a623bbe780142d7d20d8 [file] [log] [blame]
/*
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/fib/ip6_fib.h>
#include <vnet/fib/fib_table.h>
#include <vnet/dpo/ip6_ll_dpo.h>
#include <vppinfra/bihash_24_8.h>
#include <vppinfra/bihash_template.c>
ip6_fib_table_instance_t ip6_fib_table[IP6_FIB_NUM_TABLES];
/* ip6 lookup table config parameters */
u32 ip6_fib_table_nbuckets;
uword ip6_fib_table_size;
static void
vnet_ip6_fib_init (u32 fib_index)
{
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP6,
.fp_len = 0,
.fp_addr = {
.ip6 = {
{ 0, 0, },
},
}
};
/*
* Add the default route.
*/
fib_table_entry_special_add(fib_index,
&pfx,
FIB_SOURCE_DEFAULT_ROUTE,
FIB_ENTRY_FLAG_DROP);
/*
* all link local via the link local lookup DPO
*/
pfx.fp_addr.ip6.as_u64[0] = clib_host_to_net_u64 (0xFE80000000000000ULL);
pfx.fp_addr.ip6.as_u64[1] = 0;
pfx.fp_len = 10;
fib_table_entry_special_dpo_add(fib_index,
&pfx,
FIB_SOURCE_SPECIAL,
FIB_ENTRY_FLAG_NONE,
ip6_ll_dpo_get());
}
static u32
create_fib_with_table_id (u32 table_id,
fib_source_t src,
fib_table_flags_t flags,
u8 *desc)
{
fib_table_t *fib_table;
ip6_fib_t *v6_fib;
pool_get(ip6_main.fibs, fib_table);
pool_get_aligned(ip6_main.v6_fibs, v6_fib, CLIB_CACHE_LINE_BYTES);
clib_memset(fib_table, 0, sizeof(*fib_table));
clib_memset(v6_fib, 0, sizeof(*v6_fib));
ASSERT((fib_table - ip6_main.fibs) ==
(v6_fib - ip6_main.v6_fibs));
fib_table->ft_proto = FIB_PROTOCOL_IP6;
fib_table->ft_index =
v6_fib->index =
(fib_table - ip6_main.fibs);
hash_set(ip6_main.fib_index_by_table_id, table_id, fib_table->ft_index);
fib_table->ft_table_id =
v6_fib->table_id =
table_id;
fib_table->ft_flow_hash_config = IP_FLOW_HASH_DEFAULT;
fib_table->ft_flags = flags;
fib_table->ft_desc = desc;
vnet_ip6_fib_init(fib_table->ft_index);
fib_table_lock(fib_table->ft_index, FIB_PROTOCOL_IP6, src);
return (fib_table->ft_index);
}
u32
ip6_fib_table_find_or_create_and_lock (u32 table_id,
fib_source_t src)
{
uword * p;
p = hash_get (ip6_main.fib_index_by_table_id, table_id);
if (NULL == p)
return create_fib_with_table_id(table_id, src,
FIB_TABLE_FLAG_NONE,
NULL);
fib_table_lock(p[0], FIB_PROTOCOL_IP6, src);
return (p[0]);
}
u32
ip6_fib_table_create_and_lock (fib_source_t src,
fib_table_flags_t flags,
u8 *desc)
{
return (create_fib_with_table_id(~0, src, flags, desc));
}
void
ip6_fib_table_destroy (u32 fib_index)
{
/*
* all link local first ...
*/
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP6,
.fp_len = 10,
.fp_addr = {
.ip6 = {
.as_u8 = {
[0] = 0xFE,
[1] = 0x80,
},
},
}
};
fib_table_entry_delete(fib_index,
&pfx,
FIB_SOURCE_SPECIAL);
/*
* ... then the default route.
*/
pfx.fp_addr.ip6.as_u64[0] = 0;
pfx.fp_len = 00;
fib_table_entry_special_remove(fib_index,
&pfx,
FIB_SOURCE_DEFAULT_ROUTE);
fib_table_t *fib_table = fib_table_get(fib_index, FIB_PROTOCOL_IP6);
fib_source_t source;
/*
* validate no more routes.
*/
fib_table_assert_empty(fib_table);
vec_foreach_index(source, fib_table->ft_src_route_counts)
{
ASSERT(0 == fib_table->ft_src_route_counts[source]);
}
if (~0 != fib_table->ft_table_id)
{
hash_unset (ip6_main.fib_index_by_table_id, fib_table->ft_table_id);
}
vec_free (fib_table->ft_locks);
vec_free(fib_table->ft_src_route_counts);
pool_put_index(ip6_main.v6_fibs, fib_table->ft_index);
pool_put(ip6_main.fibs, fib_table);
}
fib_node_index_t
ip6_fib_table_lookup (u32 fib_index,
const ip6_address_t *addr,
u32 len)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv, value;
int i, n_p, rv;
u64 fib;
table = &ip6_fib_table[IP6_FIB_TABLE_NON_FWDING];
n_p = vec_len (table->prefix_lengths_in_search_order);
kv.key[0] = addr->as_u64[0];
kv.key[1] = addr->as_u64[1];
fib = ((u64)((fib_index))<<32);
/*
* start search from a mask length same length or shorter.
* we don't want matches longer than the mask passed
*/
i = 0;
while (i < n_p && table->prefix_lengths_in_search_order[i] > len)
{
i++;
}
for (; i < n_p; i++)
{
int dst_address_length = table->prefix_lengths_in_search_order[i];
ip6_address_t * mask = &ip6_main.fib_masks[dst_address_length];
ASSERT(dst_address_length >= 0 && dst_address_length <= 128);
//As lengths are decreasing, masks are increasingly specific.
kv.key[0] &= mask->as_u64[0];
kv.key[1] &= mask->as_u64[1];
kv.key[2] = fib | dst_address_length;
rv = clib_bihash_search_inline_2_24_8(&table->ip6_hash, &kv, &value);
if (rv == 0)
return value.value;
}
return (FIB_NODE_INDEX_INVALID);
}
fib_node_index_t
ip6_fib_table_lookup_exact_match (u32 fib_index,
const ip6_address_t *addr,
u32 len)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv, value;
ip6_address_t *mask;
u64 fib;
int rv;
table = &ip6_fib_table[IP6_FIB_TABLE_NON_FWDING];
mask = &ip6_main.fib_masks[len];
fib = ((u64)((fib_index))<<32);
kv.key[0] = addr->as_u64[0] & mask->as_u64[0];
kv.key[1] = addr->as_u64[1] & mask->as_u64[1];
kv.key[2] = fib | len;
rv = clib_bihash_search_inline_2_24_8(&table->ip6_hash, &kv, &value);
if (rv == 0)
return value.value;
return (FIB_NODE_INDEX_INVALID);
}
static void
compute_prefix_lengths_in_search_order (ip6_fib_table_instance_t *table)
{
u8 *old, *prefix_lengths_in_search_order = NULL;
int i;
/*
* build the list in a scratch space then cutover so the workers
* can continue uninterrupted.
*/
old = table->prefix_lengths_in_search_order;
/* Note: bitmap reversed so this is in fact a longest prefix match */
clib_bitmap_foreach (i, table->non_empty_dst_address_length_bitmap)
{
int dst_address_length = 128 - i;
vec_add1(prefix_lengths_in_search_order, dst_address_length);
}
table->prefix_lengths_in_search_order = prefix_lengths_in_search_order;
/*
* let the workers go once round the track before we free the old set
*/
vlib_worker_wait_one_loop();
vec_free(old);
}
void
ip6_fib_table_entry_remove (u32 fib_index,
const ip6_address_t *addr,
u32 len)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv;
ip6_address_t *mask;
u64 fib;
table = &ip6_fib_table[IP6_FIB_TABLE_NON_FWDING];
mask = &ip6_main.fib_masks[len];
fib = ((u64)((fib_index))<<32);
kv.key[0] = addr->as_u64[0] & mask->as_u64[0];
kv.key[1] = addr->as_u64[1] & mask->as_u64[1];
kv.key[2] = fib | len;
clib_bihash_add_del_24_8(&table->ip6_hash, &kv, 0);
/* refcount accounting */
ASSERT (table->dst_address_length_refcounts[len] > 0);
if (--table->dst_address_length_refcounts[len] == 0)
{
table->non_empty_dst_address_length_bitmap =
clib_bitmap_set (table->non_empty_dst_address_length_bitmap,
128 - len, 0);
compute_prefix_lengths_in_search_order (table);
}
}
void
ip6_fib_table_entry_insert (u32 fib_index,
const ip6_address_t *addr,
u32 len,
fib_node_index_t fib_entry_index)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv;
ip6_address_t *mask;
u64 fib;
table = &ip6_fib_table[IP6_FIB_TABLE_NON_FWDING];
mask = &ip6_main.fib_masks[len];
fib = ((u64)((fib_index))<<32);
kv.key[0] = addr->as_u64[0] & mask->as_u64[0];
kv.key[1] = addr->as_u64[1] & mask->as_u64[1];
kv.key[2] = fib | len;
kv.value = fib_entry_index;
clib_bihash_add_del_24_8(&table->ip6_hash, &kv, 1);
if (0 == table->dst_address_length_refcounts[len]++)
{
table->non_empty_dst_address_length_bitmap =
clib_bitmap_set (table->non_empty_dst_address_length_bitmap,
128 - len, 1);
compute_prefix_lengths_in_search_order (table);
}
}
u32 ip6_fib_table_fwding_lookup_with_if_index (ip6_main_t * im,
u32 sw_if_index,
const ip6_address_t * dst)
{
u32 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
return ip6_fib_table_fwding_lookup(fib_index, dst);
}
u32
ip6_fib_table_get_index_for_sw_if_index (u32 sw_if_index)
{
if (sw_if_index >= vec_len(ip6_main.fib_index_by_sw_if_index))
{
/*
* This is the case for interfaces that are not yet mapped to
* a IP table
*/
return (~0);
}
return (ip6_main.fib_index_by_sw_if_index[sw_if_index]);
}
void
ip6_fib_table_fwding_dpo_update (u32 fib_index,
const ip6_address_t *addr,
u32 len,
const dpo_id_t *dpo)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv;
ip6_address_t *mask;
u64 fib;
table = &ip6_fib_table[IP6_FIB_TABLE_FWDING];
mask = &ip6_main.fib_masks[len];
fib = ((u64)((fib_index))<<32);
kv.key[0] = addr->as_u64[0] & mask->as_u64[0];
kv.key[1] = addr->as_u64[1] & mask->as_u64[1];
kv.key[2] = fib | len;
kv.value = dpo->dpoi_index;
clib_bihash_add_del_24_8(&table->ip6_hash, &kv, 1);
if (0 == table->dst_address_length_refcounts[len]++)
{
table->non_empty_dst_address_length_bitmap =
clib_bitmap_set (table->non_empty_dst_address_length_bitmap,
128 - len, 1);
compute_prefix_lengths_in_search_order (table);
}
}
void
ip6_fib_table_fwding_dpo_remove (u32 fib_index,
const ip6_address_t *addr,
u32 len,
const dpo_id_t *dpo)
{
ip6_fib_table_instance_t *table;
clib_bihash_kv_24_8_t kv;
ip6_address_t *mask;
u64 fib;
table = &ip6_fib_table[IP6_FIB_TABLE_FWDING];
mask = &ip6_main.fib_masks[len];
fib = ((u64)((fib_index))<<32);
kv.key[0] = addr->as_u64[0] & mask->as_u64[0];
kv.key[1] = addr->as_u64[1] & mask->as_u64[1];
kv.key[2] = fib | len;
kv.value = dpo->dpoi_index;
clib_bihash_add_del_24_8(&table->ip6_hash, &kv, 0);
/* refcount accounting */
ASSERT (table->dst_address_length_refcounts[len] > 0);
if (--table->dst_address_length_refcounts[len] == 0)
{
table->non_empty_dst_address_length_bitmap =
clib_bitmap_set (table->non_empty_dst_address_length_bitmap,
128 - len, 0);
compute_prefix_lengths_in_search_order (table);
}
}
/**
* @brief Context when walking the IPv6 table. Since all VRFs are in the
* same hash table, we need to filter only those we need as we walk
*/
typedef struct ip6_fib_walk_ctx_t_
{
u32 i6w_fib_index;
fib_table_walk_fn_t i6w_fn;
void *i6w_ctx;
fib_prefix_t i6w_root;
fib_prefix_t *i6w_sub_trees;
} ip6_fib_walk_ctx_t;
static int
ip6_fib_walk_cb (clib_bihash_kv_24_8_t * kvp,
void *arg)
{
ip6_fib_walk_ctx_t *ctx = arg;
ip6_address_t key;
if ((kvp->key[2] >> 32) == ctx->i6w_fib_index)
{
key.as_u64[0] = kvp->key[0];
key.as_u64[1] = kvp->key[1];
if (ip6_destination_matches_route(&ip6_main,
&key,
&ctx->i6w_root.fp_addr.ip6,
ctx->i6w_root.fp_len))
{
const fib_prefix_t *sub_tree;
int skip = 0;
/*
* exclude sub-trees the walk does not want to explore
*/
vec_foreach(sub_tree, ctx->i6w_sub_trees)
{
if (ip6_destination_matches_route(&ip6_main,
&key,
&sub_tree->fp_addr.ip6,
sub_tree->fp_len))
{
skip = 1;
break;
}
}
if (!skip)
{
switch (ctx->i6w_fn(kvp->value, ctx->i6w_ctx))
{
case FIB_TABLE_WALK_CONTINUE:
break;
case FIB_TABLE_WALK_SUB_TREE_STOP: {
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP6,
.fp_len = kvp->key[2] & 0xffffffff,
.fp_addr.ip6 = key,
};
vec_add1(ctx->i6w_sub_trees, pfx);
break;
}
case FIB_TABLE_WALK_STOP:
goto done;
}
}
}
}
done:
return (1);
}
void
ip6_fib_table_walk (u32 fib_index,
fib_table_walk_fn_t fn,
void *arg)
{
ip6_fib_walk_ctx_t ctx = {
.i6w_fib_index = fib_index,
.i6w_fn = fn,
.i6w_ctx = arg,
.i6w_root = {
.fp_proto = FIB_PROTOCOL_IP6,
},
.i6w_sub_trees = NULL,
};
clib_bihash_foreach_key_value_pair_24_8(
&ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
ip6_fib_walk_cb,
&ctx);
vec_free(ctx.i6w_sub_trees);
}
void
ip6_fib_table_sub_tree_walk (u32 fib_index,
const fib_prefix_t *root,
fib_table_walk_fn_t fn,
void *arg)
{
ip6_fib_walk_ctx_t ctx = {
.i6w_fib_index = fib_index,
.i6w_fn = fn,
.i6w_ctx = arg,
.i6w_root = *root,
};
clib_bihash_foreach_key_value_pair_24_8(
&ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
ip6_fib_walk_cb,
&ctx);
}
typedef struct ip6_fib_show_ctx_t_ {
fib_node_index_t *entries;
} ip6_fib_show_ctx_t;
static fib_table_walk_rc_t
ip6_fib_table_show_walk (fib_node_index_t fib_entry_index,
void *arg)
{
ip6_fib_show_ctx_t *ctx = arg;
vec_add1(ctx->entries, fib_entry_index);
return (FIB_TABLE_WALK_CONTINUE);
}
static void
ip6_fib_table_show_all (ip6_fib_t *fib,
vlib_main_t * vm)
{
fib_node_index_t *fib_entry_index;
ip6_fib_show_ctx_t ctx = {
.entries = NULL,
};
ip6_fib_table_walk(fib->index, ip6_fib_table_show_walk, &ctx);
vec_sort_with_function(ctx.entries, fib_entry_cmp_for_sort);
vec_foreach(fib_entry_index, ctx.entries)
{
vlib_cli_output(vm, "%U",
format_fib_entry,
*fib_entry_index,
FIB_ENTRY_FORMAT_BRIEF);
}
vec_free(ctx.entries);
}
static void
ip6_fib_table_show_one (ip6_fib_t *fib,
vlib_main_t * vm,
ip6_address_t *address,
u32 mask_len,
int detail)
{
vlib_cli_output(vm, "%U",
format_fib_entry,
ip6_fib_table_lookup(fib->index, address, mask_len),
(detail ?
FIB_ENTRY_FORMAT_DETAIL2:
FIB_ENTRY_FORMAT_DETAIL));
}
u8 *
format_ip6_fib_table_memory (u8 * s, va_list * args)
{
uword bytes_inuse;
bytes_inuse = (alloc_arena_next(&(ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash)) +
alloc_arena_next(&(ip6_fib_table[IP6_FIB_TABLE_FWDING].ip6_hash)));
s = format(s, "%=30s %=6d %=12ld\n",
"IPv6 unicast",
pool_elts(ip6_main.fibs),
bytes_inuse);
return (s);
}
typedef struct {
u32 fib_index;
u64 count_by_prefix_length[129];
} count_routes_in_fib_at_prefix_length_arg_t;
static int
count_routes_in_fib_at_prefix_length (clib_bihash_kv_24_8_t * kvp,
void *arg)
{
count_routes_in_fib_at_prefix_length_arg_t * ap = arg;
int mask_width;
if ((kvp->key[2]>>32) != ap->fib_index)
return (BIHASH_WALK_CONTINUE);
mask_width = kvp->key[2] & 0xFF;
ap->count_by_prefix_length[mask_width]++;
return (BIHASH_WALK_CONTINUE);
}
static clib_error_t *
ip6_show_fib (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
count_routes_in_fib_at_prefix_length_arg_t _ca, *ca = &_ca;
ip6_main_t * im6 = &ip6_main;
fib_table_t *fib_table;
ip6_fib_t * fib;
int verbose, matching;
ip6_address_t matching_address;
u32 mask_len = 128;
int table_id = -1, fib_index = ~0;
int detail = 0;
int hash = 0;
verbose = 1;
matching = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "brief") ||
unformat (input, "summary") ||
unformat (input, "sum"))
verbose = 0;
else if (unformat (input, "detail") ||
unformat (input, "det"))
detail = 1;
else if (unformat (input, "hash") ||
unformat (input, "mem") ||
unformat (input, "memory"))
hash = 1;
else if (unformat (input, "%U/%d",
unformat_ip6_address, &matching_address, &mask_len))
matching = 1;
else if (unformat (input, "%U", unformat_ip6_address, &matching_address))
matching = 1;
else if (unformat (input, "table %d", &table_id))
;
else if (unformat (input, "index %d", &fib_index))
;
else
break;
}
if (hash)
{
vlib_cli_output (vm, "IPv6 Non-Forwarding Hash Table:\n%U\n",
BV (format_bihash),
&ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
detail);
vlib_cli_output (vm, "IPv6 Forwarding Hash Table:\n%U\n",
BV (format_bihash),
&ip6_fib_table[IP6_FIB_TABLE_FWDING].ip6_hash,
detail);
return (NULL);
}
pool_foreach (fib_table, im6->fibs)
{
fib_source_t source;
u8 *s = NULL;
fib = pool_elt_at_index(im6->v6_fibs, fib_table->ft_index);
if (table_id >= 0 && table_id != (int)fib->table_id)
continue;
if (fib_index != ~0 && fib_index != (int)fib->index)
continue;
if (fib_table->ft_flags & FIB_TABLE_FLAG_IP6_LL)
continue;
s = format(s, "%U, fib_index:%d, flow hash:[%U] epoch:%d flags:%U locks:[",
format_fib_table_name, fib->index,
FIB_PROTOCOL_IP6,
fib->index,
format_ip_flow_hash_config,
fib_table->ft_flow_hash_config,
fib_table->ft_epoch,
format_fib_table_flags, fib_table->ft_flags);
vec_foreach_index(source, fib_table->ft_locks)
{
if (0 != fib_table->ft_locks[source])
{
s = format(s, "%U:%d, ",
format_fib_source, source,
fib_table->ft_locks[source]);
}
}
s = format (s, "]");
vlib_cli_output (vm, "%v", s);
vec_free(s);
/* Show summary? */
if (! verbose)
{
clib_bihash_24_8_t * h = &ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash;
int len;
vlib_cli_output (vm, "%=20s%=16s", "Prefix length", "Count");
clib_memset (ca, 0, sizeof(*ca));
ca->fib_index = fib->index;
clib_bihash_foreach_key_value_pair_24_8
(h, count_routes_in_fib_at_prefix_length, ca);
for (len = 128; len >= 0; len--)
{
if (ca->count_by_prefix_length[len])
vlib_cli_output (vm, "%=20d%=16lld",
len, ca->count_by_prefix_length[len]);
}
continue;
}
if (!matching)
{
ip6_fib_table_show_all(fib, vm);
}
else
{
ip6_fib_table_show_one(fib, vm, &matching_address, mask_len, detail);
}
}
return 0;
}
/*?
* This command displays the IPv6 FIB Tables (VRF Tables) and the route
* entries for each table.
*
* @note This command will run for a long time when the FIB tables are
* comprised of millions of entries. For those scenarios, consider displaying
* in summary mode.
*
* @cliexpar
* @parblock
* Example of how to display all the IPv6 FIB tables:
* @cliexstart{show ip6 fib}
* ipv6-VRF:0, fib_index 0, flow hash: src dst sport dport proto
* @::/0
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:5 buckets:1 uRPF:5 to:[0:0]]
* [0] [@0]: dpo-drop ip6
* fe80::/10
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:10 buckets:1 uRPF:10 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::1/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:8 buckets:1 uRPF:8 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::2/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:7 buckets:1 uRPF:7 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::16/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:9 buckets:1 uRPF:9 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::1:ff00:0/104
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:6 buckets:1 uRPF:6 to:[0:0]]
* [0] [@2]: dpo-receive
* ipv6-VRF:8, fib_index 1, flow hash: src dst sport dport proto
* @::/0
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]]
* [0] [@0]: dpo-drop ip6
* @::a:1:1:0:4/126
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:27 buckets:1 uRPF:26 to:[0:0]]
* [0] [@4]: ipv6-glean: af_packet0
* @::a:1:1:0:7/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:28 buckets:1 uRPF:27 to:[0:0]]
* [0] [@2]: dpo-receive: @::a:1:1:0:7 on af_packet0
* fe80::/10
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:26 buckets:1 uRPF:25 to:[0:0]]
* [0] [@2]: dpo-receive
* fe80::fe:3eff:fe3e:9222/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:29 buckets:1 uRPF:28 to:[0:0]]
* [0] [@2]: dpo-receive: fe80::fe:3eff:fe3e:9222 on af_packet0
* ff02::1/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:24 buckets:1 uRPF:23 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::2/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:23 buckets:1 uRPF:22 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::16/128
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:25 buckets:1 uRPF:24 to:[0:0]]
* [0] [@2]: dpo-receive
* ff02::1:ff00:0/104
* unicast-ip6-chain
* [@0]: dpo-load-balance: [index:22 buckets:1 uRPF:21 to:[0:0]]
* [0] [@2]: dpo-receive
* @cliexend
*
* Example of how to display a summary of all IPv6 FIB tables:
* @cliexstart{show ip6 fib summary}
* ipv6-VRF:0, fib_index 0, flow hash: src dst sport dport proto
* Prefix length Count
* 128 3
* 104 1
* 10 1
* 0 1
* ipv6-VRF:8, fib_index 1, flow hash: src dst sport dport proto
* Prefix length Count
* 128 5
* 126 1
* 104 1
* 10 1
* 0 1
* @cliexend
* @endparblock
?*/
VLIB_CLI_COMMAND (ip6_show_fib_command, static) = {
.path = "show ip6 fib",
.short_help = "show ip6 fib [summary] [table <table-id>] [index <fib-id>] [<ip6-addr>[/<width>]] [detail]",
.function = ip6_show_fib,
};
static clib_error_t *
ip6_config (vlib_main_t * vm, unformat_input_t * input)
{
uword heapsize = 0;
u32 nbuckets = 0;
char *default_name = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "hash-buckets %d", &nbuckets))
;
else if (unformat (input, "heap-size %U",
unformat_memory_size, &heapsize))
;
else if (unformat (input, "default-table-name %s", &default_name))
;
else
return clib_error_return (0, "unknown input '%U'",
format_unformat_error, input);
}
ip6_fib_table_nbuckets = nbuckets;
ip6_fib_table_size = heapsize;
fib_table_default_names[FIB_PROTOCOL_IP6] = default_name;
return 0;
}
VLIB_EARLY_CONFIG_FUNCTION (ip6_config, "ip6");
static clib_error_t *
ip6_fib_init (vlib_main_t * vm)
{
if (ip6_fib_table_nbuckets == 0)
ip6_fib_table_nbuckets = IP6_FIB_DEFAULT_HASH_NUM_BUCKETS;
ip6_fib_table_nbuckets = 1 << max_log2 (ip6_fib_table_nbuckets);
if (ip6_fib_table_size == 0)
ip6_fib_table_size = IP6_FIB_DEFAULT_HASH_MEMORY_SIZE;
clib_bihash_init_24_8 (&(ip6_fib_table[IP6_FIB_TABLE_FWDING].ip6_hash),
"ip6 FIB fwding table",
ip6_fib_table_nbuckets, ip6_fib_table_size);
clib_bihash_init_24_8 (&ip6_fib_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
"ip6 FIB non-fwding table",
ip6_fib_table_nbuckets, ip6_fib_table_size);
return (NULL);
}
VLIB_INIT_FUNCTION (ip6_fib_init) =
{
.runs_before = VLIB_INITS("ip6_lookup_init"),
};