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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 <vlib/vlib.h>
#include <vppinfra/error.h>
#include <vnet/feature/feature.h>
#include <vnet/span/span.h>
int
span_add_delete_entry (vlib_main_t * vm,
u32 src_sw_if_index, u32 dst_sw_if_index, u8 state)
{
span_main_t *sm = &span_main;
span_interface_t *si;
u32 new_num_rx_mirror_ports, new_num_tx_mirror_ports;
if (state > 3)
return VNET_API_ERROR_UNIMPLEMENTED;
if ((src_sw_if_index == ~0) || (dst_sw_if_index == ~0 && state > 0)
|| (src_sw_if_index == dst_sw_if_index))
return VNET_API_ERROR_INVALID_INTERFACE;
vnet_sw_interface_t *sw_if;
sw_if = vnet_get_sw_interface (vnet_get_main (), src_sw_if_index);
if (sw_if->type == VNET_SW_INTERFACE_TYPE_SUB)
return VNET_API_ERROR_UNIMPLEMENTED;
vec_validate_aligned (sm->interfaces, src_sw_if_index,
CLIB_CACHE_LINE_BYTES);
si = vec_elt_at_index (sm->interfaces, src_sw_if_index);
si->rx_mirror_ports = clib_bitmap_set (si->rx_mirror_ports, dst_sw_if_index,
(state & 1) != 0);
si->tx_mirror_ports = clib_bitmap_set (si->tx_mirror_ports, dst_sw_if_index,
(state & 2) != 0);
new_num_rx_mirror_ports = clib_bitmap_count_set_bits (si->rx_mirror_ports);
new_num_tx_mirror_ports = clib_bitmap_count_set_bits (si->tx_mirror_ports);
if (new_num_rx_mirror_ports == 1 && si->num_rx_mirror_ports == 0)
vnet_feature_enable_disable ("device-input", "span-input",
src_sw_if_index, 1, 0, 0);
if (new_num_rx_mirror_ports == 0 && si->num_rx_mirror_ports == 1)
vnet_feature_enable_disable ("device-input", "span-input",
src_sw_if_index, 0, 0, 0);
if (new_num_rx_mirror_ports == 1 && si->num_rx_mirror_ports == 0)
vnet_feature_enable_disable ("interface-output", "span-output",
src_sw_if_index, 1, 0, 0);
if (new_num_rx_mirror_ports == 0 && si->num_rx_mirror_ports == 1)
vnet_feature_enable_disable ("interface-output", "span-output",
src_sw_if_index, 0, 0, 0);
si->num_rx_mirror_ports = new_num_rx_mirror_ports;
si->num_tx_mirror_ports = new_num_tx_mirror_ports;
if (dst_sw_if_index > sm->max_sw_if_index)
sm->max_sw_if_index = dst_sw_if_index;
return 0;
}
static clib_error_t *
set_interface_span_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
span_main_t *sm = &span_main;
u32 src_sw_if_index = ~0;
u32 dst_sw_if_index = ~0;
u8 state = 3;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "%U", unformat_vnet_sw_interface,
sm->vnet_main, &src_sw_if_index))
;
else if (unformat (input, "destination %U", unformat_vnet_sw_interface,
sm->vnet_main, &dst_sw_if_index))
;
else if (unformat (input, "disable"))
state = 0;
else if (unformat (input, "rx"))
state = 1;
else if (unformat (input, "tx"))
state = 2;
else if (unformat (input, "both"))
state = 3;
else
break;
}
int rv =
span_add_delete_entry (vm, src_sw_if_index, dst_sw_if_index, state);
if (rv == VNET_API_ERROR_INVALID_INTERFACE)
return clib_error_return (0, "Invalid interface");
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_span_command, static) = {
.path = "set interface span",
.short_help = "set interface span <if-name> [disable | destination <if-name> [both|rx|tx]]",
.function = set_interface_span_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
show_interfaces_span_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
span_main_t *sm = &span_main;
span_interface_t *si;
vnet_main_t *vnm = &vnet_main;
u8 header = 1;
char *states[] = { "none", "rx", "tx", "both" };
u8 *s = 0;
/* *INDENT-OFF* */
vec_foreach (si, sm->interfaces)
if (si->num_rx_mirror_ports || si->num_tx_mirror_ports)
{
clib_bitmap_t *b;
u32 i;
b = clib_bitmap_dup_or (si->rx_mirror_ports, si->tx_mirror_ports);
if (header)
{
vlib_cli_output (vm, "%-40s %s", "Source interface",
"Mirror interface (direction)");
header = 0;
}
s = format (s, "%U", format_vnet_sw_if_index_name, vnm,
si - sm->interfaces);
clib_bitmap_foreach (i, b, (
{
int state;
state = (clib_bitmap_get (si->rx_mirror_ports, i) +
clib_bitmap_get (si->tx_mirror_ports, i) * 2);
vlib_cli_output (vm, "%-40v %U (%s)", s,
format_vnet_sw_if_index_name, vnm, i,
states[state]);
vec_reset_length (s);
}));
clib_bitmap_free (b);
}
/* *INDENT-ON* */
vec_free (s);
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_interfaces_span_command, static) = {
.path = "show interface span",
.short_help = "Shows SPAN mirror table",
.function = show_interfaces_span_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
span_init (vlib_main_t * vm)
{
span_main_t *sm = &span_main;
sm->vlib_main = vm;
sm->vnet_main = vnet_get_main ();
return 0;
}
VLIB_INIT_FUNCTION (span_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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