""" abstract vpp object and object registry """
import abc
import six
from six import moves
@six.add_metaclass(abc.ABCMeta)
class VppObject(object):
""" Abstract vpp object """
@abc.abstractmethod
def add_vpp_config(self):
""" Add the configuration for this object to vpp. """
pass
@abc.abstractmethod
def query_vpp_config(self):
"""Query the vpp configuration.
:return: True if the object is configured"""
pass
@abc.abstractmethod
def remove_vpp_config(self):
""" Remove the configuration for this object from vpp. """
pass
def object_id(self):
""" Return a unique string representing this object. """
return "Undefined. for <%s %s>" % (self.__class__.__name__, id(self))
def __str__(self):
return self.object_id()
def __repr__(self):
return '<%s>' % self.object_id()
def __hash__(self):
return hash(self.object_id())
def __eq__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
if other.object_id() == self.
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/*
* 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/mfib/ip4_mfib.h>
#include <vnet/mfib/mfib_table.h>
#include <vnet/mfib/mfib_entry.h>
static const mfib_prefix_t ip4_specials[] = {
{
/* (*,*)/0 */
.fp_src_addr = {
.ip4.data_u32 = 0,
},
.fp_grp_addr = {
.ip4.data_u32 = 0,
},
.fp_len = 0,
.fp_proto = FIB_PROTOCOL_IP4,
},
};
static u32
ip4_create_mfib_with_table_id (u32 table_id)
{
mfib_table_t *mfib_table;
pool_get_aligned(ip4_main.mfibs, mfib_table, CLIB_CACHE_LINE_BYTES);
memset(mfib_table, 0, sizeof(*mfib_table));
mfib_table->mft_proto = FIB_PROTOCOL_IP4;
mfib_table->mft_index =
mfib_table->v4.index =
(mfib_table - ip4_main.mfibs);
hash_set (ip4_main.mfib_index_by_table_id,
table_id,
mfib_table->mft_index);
mfib_table->mft_table_id =
mfib_table->v4.table_id =
table_id;
mfib_table_lock(mfib_table->mft_index, FIB_PROTOCOL_IP4);
/*
* add the special entries into the new FIB
*/
int ii;
for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++)
{
mfib_prefix_t prefix = ip4_specials[ii];
prefix.fp_src_addr.ip4.data_u32 =
clib_host_to_net_u32(prefix.fp_src_addr.ip4.data_u32);
prefix.fp_grp_addr.ip4.data_u32 =
clib_host_to_net_u32(prefix.fp_grp_addr.ip4.data_u32);
mfib_table_entry_update(mfib_table->mft_index,
&prefix,
MFIB_SOURCE_DEFAULT_ROUTE,
MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_DROP);
}
return (mfib_table->mft_index);
}
void
ip4_mfib_table_destroy (ip4_mfib_t *mfib)
{
mfib_table_t *mfib_table = (mfib_table_t*)mfib;
int ii;
/*
* remove all the specials we added when the table was created.
*/
for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++)
{
fib_node_index_t mfei;
mfib_prefix_t prefix = ip4_specials[ii];
prefix.fp_src_addr.ip4.data_u32 =
clib_host_to_net_u32(prefix.fp_src_addr.ip4.data_u32);
prefix.fp_grp_addr.ip4.data_u32 =
clib_host_to_net_u32(prefix.fp_grp_addr.ip4.data_u32);
mfei = mfib_table_lookup(mfib_table->mft_index, &prefix);
mfib_table_entry_delete_index(mfei, MFIB_SOURCE_DEFAULT_ROUTE);
}
/*
* validate no more routes.
*/
ASSERT(0 == mfib_table->mft_total_route_counts);
ASSERT(~0 != mfib_table->mft_table_id);
hash_unset (ip4_main.mfib_index_by_table_id, mfib_table->mft_table_id);
pool_put(ip4_main.mfibs, mfib_table);
}
u32
ip4_mfib_table_find_or_create_and_lock (u32 table_id)
{
u32 index;
index = ip4_mfib_index_from_table_id(table_id);
if (~0 == index)
return ip4_create_mfib_with_table_id(table_id);
mfib_table_lock(index, FIB_PROTOCOL_IP4);
return (index);
}
u32
ip4_mfib_table_get_index_for_sw_if_index (u32 sw_if_index)
{
if (sw_if_index >= vec_len(ip4_main.mfib_index_by_sw_if_index))
{
/*
* This is the case for interfaces that are not yet mapped to
* a IP table
*/
return (~0);
}
return (ip4_main.mfib_index_by_sw_if_index[sw_if_index]);
}
#define IPV4_MFIB_GRP_LEN(_len)\
(_len > 32 ? 32 : _len)
#define IP4_MFIB_MK_KEY(_grp, _src, _len, _key) \
{ \
_key = ((u64)(_grp->data_u32 & \
ip4_main.fib_masks[IPV4_MFIB_GRP_LEN(_len)])) << 32; \
_key |= _src->data_u32; \
}
#define IP4_MFIB_MK_GRP_KEY(_grp, _len, _key) \
{ \
_key = ((u64)(_grp->data_u32 & \
ip4_main.fib_masks[IPV4_MFIB_GRP_LEN(_len)])) << 32; \
}
/*
* ip4_fib_table_lookup_exact_match
*
* Exact match prefix lookup
*/
fib_node_index_t
ip4_mfib_table_lookup_exact_match (const ip4_mfib_t *mfib,
const ip4_address_t *grp,
const ip4_address_t *src,
u32 len)
{
uword * hash, * result;
u64 key;
hash = mfib->fib_entry_by_dst_address[len];
IP4_MFIB_MK_KEY(grp, src, len, key);
result = hash_get(hash, key);
if (NULL != result) {
return (result[0]);
}
return (FIB_NODE_INDEX_INVALID);
}
/*
* ip4_fib_table_lookup
*
* Longest prefix match
*/
fib_node_index_t
ip4_mfib_table_lookup (const ip4_mfib_t *mfib,
const ip4_address_t *src,
const ip4_address_t *grp,
u32 len)
{
uword * hash, * result;
i32 mask_len;
u64 key;
mask_len = len;
if (PREDICT_TRUE(64 == mask_len))
{
hash = mfib->fib_entry_by_dst_address[mask_len];
IP4_MFIB_MK_KEY(grp, src, mask_len, key);
result = hash_get (hash, key);
if (NULL != result) {
return (result[0]);
}
}
for (mask_len = 32; mask_len >= 0; mask_len--)
{
hash = mfib->fib_entry_by_dst_address[mask_len];
IP4_MFIB_MK_GRP_KEY(grp, mask_len, key);
result = hash_get (hash, key);
if (NULL != result) {
return (result[0]);
}
}
return (FIB_NODE_INDEX_INVALID);
}
void
ip4_mfib_table_entry_insert (ip4_mfib_t *mfib,
const ip4_address_t *grp,
const ip4_address_t *src,
u32 len,
fib_node_index_t fib_entry_index)
{
uword * hash, * result;
u64 key;
IP4_MFIB_MK_KEY(grp, src, len, key);
hash = mfib->fib_entry_by_dst_address[len];
result = hash_get (hash, key);
if (NULL == result) {
/*
* adding a new entry
*/
if (NULL == hash) {
hash = hash_create (32 /* elts */, sizeof (uword));
hash_set_flags (hash, HASH_FLAG_NO_AUTO_SHRINK);
}
hash = hash_set(hash, key, fib_entry_index);
mfib->fib_entry_by_dst_address[len] = hash;
}
else
{
ASSERT(0);
}
}
void
ip4_mfib_table_entry_remove (ip4_mfib_t *mfib,
const ip4_address_t *grp,
const ip4_address_t *src,
u32 len)
{
uword * hash, * result;
u64 key;
IP4_MFIB_MK_KEY(grp, src, len, key);
hash = mfib->fib_entry_by_dst_address[len];
result = hash_get (hash, key);
if (NULL == result)
{
/*
* removing a non-existant entry. i'll allow it.
*/
}
else
{
hash_unset(hash, key);
}
mfib->fib_entry_by_dst_address[len] = hash;
}
void
ip4_mfib_table_walk (ip4_mfib_t *mfib,
mfib_table_walk_fn_t fn,
void *ctx)
{
int i;
for (i = 0; i < ARRAY_LEN (mfib->fib_entry_by_dst_address); i++)
{
uword * hash = mfib->fib_entry_by_dst_address[i];
if (NULL != hash)
{
hash_pair_t * p;
hash_foreach_pair (p, hash,
({
fn(p->value[0], ctx);
}));
}
}
}
static void
ip4_mfib_table_show_all (ip4_mfib_t *mfib,
vlib_main_t * vm)
{
fib_node_index_t *mfib_entry_indicies;
fib_node_index_t *mfib_entry_index;
int i;
mfib_entry_indicies = NULL;
for (i = 0; i < ARRAY_LEN (mfib->fib_entry_by_dst_address); i++)
{
uword * hash = mfib->fib_entry_by_dst_address[i];
if (NULL != hash)
{
hash_pair_t * p;
hash_foreach_pair (p, hash,
({
vec_add1(mfib_entry_indicies, p->value[0]);
}));
}
}
vec_sort_with_function(mfib_entry_indicies, mfib_entry_cmp_for_sort);
vec_foreach(mfib_entry_index, mfib_entry_indicies)
{
vlib_cli_output(vm, "%U",
format_mfib_entry,
*mfib_entry_index,
MFIB_ENTRY_FORMAT_BRIEF);
}
vec_free(mfib_entry_indicies);
}
static void
ip4_mfib_table_show_one (ip4_mfib_t *mfib,
vlib_main_t * vm,
ip4_address_t *src,
ip4_address_t *grp,
u32 mask_len)
{
vlib_cli_output(vm, "%U",
format_mfib_entry,
ip4_mfib_table_lookup(mfib, src, grp, mask_len),
MFIB_ENTRY_FORMAT_DETAIL);
}
static clib_error_t *
ip4_show_mfib (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
ip4_main_t * im4 = &ip4_main;
mfib_table_t *mfib_table;
int verbose, matching;
ip4_address_t grp, src = {{0}};
u32 mask = 32;
int i, table_id = -1, fib_index = ~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, "%U %U",
unformat_ip4_address, &src,
unformat_ip4_address, &grp))
{
matching = 1;
mask = 64;
}
else if (unformat (input, "%U/%d", unformat_ip4_address, &grp, &mask))
{
memset(&src, 0, sizeof(src));
matching = 1;
}
else if (unformat (input, "%U", unformat_ip4_address, &grp))
{
memset(&src, 0, sizeof(src));
matching = 1;
mask = 32;
}
else if (unformat (input, "table %d", &table_id))
;
else if (unformat (input, "index %d", &fib_index))
;
else
break;
}
pool_foreach (mfib_table, im4->mfibs,
({
ip4_mfib_t *mfib = &mfib_table->v4;
if (table_id >= 0 && table_id != (int)mfib->table_id)
continue;
if (fib_index != ~0 && fib_index != (int)mfib->index)
continue;
vlib_cli_output (vm, "%U, fib_index %d",
format_mfib_table_name, mfib->index, FIB_PROTOCOL_IP4,
mfib->index);
/* Show summary? */
if (! verbose)
{
vlib_cli_output (vm, "%=20s%=16s", "Prefix length", "Count");
for (i = 0; i < ARRAY_LEN (mfib->fib_entry_by_dst_address); i++)
{
uword * hash = mfib->fib_entry_by_dst_address[i];
uword n_elts = hash_elts (hash);
if (n_elts > 0)
vlib_cli_output (vm, "%20d%16d", i, n_elts);
}
continue;
}
if (!matching)
{
ip4_mfib_table_show_all(mfib, vm);
}
else
{
ip4_mfib_table_show_one(mfib, vm, &src, &grp, mask);
}
}));
return 0;
}
/*?
* This command displays the IPv4 MulticasrFIB 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 senarios, consider displaying
* a single table or summary mode.
*
* @cliexpar
* Example of how to display all the IPv4 Multicast FIB tables:
* @cliexstart{show ip fib}
* ipv4-VRF:0, fib_index 0
* (*, 0.0.0.0/0): flags:D,
* Interfaces:
* multicast-ip4-chain
* [@1]: dpo-drop ip4
* (*, 232.1.1.1/32):
* Interfaces:
* test-eth1: Forward,
* test-eth2: Forward,
* test-eth0: Accept,
* multicast-ip4-chain
* [@2]: dpo-replicate: [index:1 buckets:2 to:[0:0]]
* [0] [@1]: ipv4-mcast: test-eth1: IP4: d0:d1:d2:d3:d4:01 -> 01:00:05:00:00:00
* [1] [@1]: ipv4-mcast: test-eth2: IP4: d0:d1:d2:d3:d4:02 -> 01:00:05:00:00:00
*
* @cliexend
* Example of how to display a summary of all IPv4 FIB tables:
* @cliexstart{show ip fib summary}
* ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto
* Prefix length Count
* 0 1
* 8 2
* 32 4
* ipv4-VRF:7, fib_index 1, flow hash: src dst sport dport proto
* Prefix length Count
* 0 1
* 8 2
* 24 2
* 32 4
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (ip4_show_mfib_command, static) = {
.path = "show ip mfib",
.short_help = "show ip mfib [summary] [table <table-id>] [index <fib-id>] [<grp-addr>[/<mask>]] [<grp-addr>] [<src-addr> <grp-addr>]",
.function = ip4_show_mfib,
};
/* *INDENT-ON* */