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/*
* Copyright (c) 2018 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/ip/ip.h>
#include <vnet/feature/feature.h>
#include <vnet/qos/qos_egress_map.h>
#include <vnet/qos/qos_mark.h>
/**
* per-interface vector of which MAP is used by which interface
* for each output source
*/
index_t *qos_mark_configs[QOS_N_SOURCES];
void
qos_mark_ip_enable_disable (u32 sw_if_index, u8 enable)
{
vnet_feature_enable_disable ("ip6-output", "ip6-qos-mark",
sw_if_index, enable, NULL, 0);
vnet_feature_enable_disable ("ip4-output", "ip4-qos-mark",
sw_if_index, enable, NULL, 0);
}
void
qos_mark_vlan_enable_disable (u32 sw_if_index, u8 enable)
{
/*
* one cannot run a feature on a sub-interface, so we need
* to enable a feature on all the L3 output paths
*/
vnet_feature_enable_disable ("ip6-output", "vlan-ip6-qos-mark",
sw_if_index, enable, NULL, 0);
vnet_feature_enable_disable ("ip4-output", "vlan-ip4-qos-mark",
sw_if_index, enable, NULL, 0);
vnet_feature_enable_disable ("mpls-output", "vlan-mpls-qos-mark",
sw_if_index, enable, NULL, 0);
}
void
qos_mark_mpls_enable_disable (u32 sw_if_index, u8 enable)
{
vnet_feature_enable_disable ("mpls-output", "mpls-qos-mark",
sw_if_index, enable, NULL, 0);
}
static void
qos_egress_map_feature_config (u32 sw_if_index, qos_source_t qs, u8 enable)
{
switch (qs)
{
case QOS_SOURCE_EXT:
ASSERT (0);
break;
case QOS_SOURCE_VLAN:
qos_mark_vlan_enable_disable (sw_if_index, enable);
break;
case QOS_SOURCE_MPLS:
qos_mark_mpls_enable_disable (sw_if_index, enable);
break;
case QOS_SOURCE_IP:
qos_mark_ip_enable_disable (sw_if_index, enable);
break;
}
}
int
qos_mark_enable (u32 sw_if_index,
qos_source_t output_source, qos_egress_map_id_t mid)
{
index_t qemi;
vec_validate_init_empty (qos_mark_configs[output_source],
sw_if_index, INDEX_INVALID);
qemi = qos_egress_map_find (mid);
if (INDEX_INVALID == qemi)
return VNET_API_ERROR_NO_SUCH_TABLE;
if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
{
qos_egress_map_feature_config (sw_if_index, output_source, 1);
}
qos_mark_configs[output_source][sw_if_index] = qemi;
return (0);
}
int
qos_mark_disable (u32 sw_if_index, qos_source_t output_source)
{
if (vec_len (qos_mark_configs[output_source]) <= sw_if_index)
return VNET_API_ERROR_NO_MATCHING_INTERFACE;
if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
return VNET_API_ERROR_VALUE_EXIST;
if (INDEX_INVALID != qos_mark_configs[output_source][sw_if_index])
{
qos_egress_map_feature_config (sw_if_index, output_source, 0);
}
qos_mark_configs[output_source][sw_if_index] = INDEX_INVALID;
return (0);
}
static clib_error_t *
qos_mark_cli (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
qos_egress_map_id_t map_id;
u32 sw_if_index, qs;
vnet_main_t *vnm;
int rv, enable;
vnm = vnet_get_main ();
map_id = ~0;
qs = 0xff;
enable = 1;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "id %d", &map_id))
;
else if (unformat (input, "disable"))
enable = 0;
else if (unformat (input, "%U", unformat_qos_source, &qs))
;
else if (unformat (input, "%U",
unformat_vnet_sw_interface, vnm, &sw_if_index))
;
else
break;
}
if (~0 == sw_if_index)
return clib_error_return (0, "interface must be specified");
if (0xff == qs)
return clib_error_return (0, "output location must be specified");
if (enable)
rv = qos_mark_enable (sw_if_index, qs, map_id);
else
rv = qos_mark_disable (sw_if_index, qs);
if (0 == rv)
return (NULL);
return clib_error_return (0, "Failed to map interface");
}
/*?
* Apply a QoS egress mapping table to an interface for QoS marking packets
* at the given output protocol.
*
* @cliexpar
* @cliexcmd{qos egress interface GigEthernet0/9/0 id 0 output ip}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (qos_egress_map_interface_command, static) = {
.path = "qos mark",
.short_help = "qos mark <SOURCE> <INTERFACE> id <MAP>",
.function = qos_mark_cli,
.is_mp_safe = 1,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*
*/
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