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/*
* Copyright (c) 2015 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.
*/
/*
*------------------------------------------------------------------
* sample.c - simple MAC-swap API / debug CLI handling
*------------------------------------------------------------------
*/
#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <sample/sample.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vlibsocket/api.h>
/* define message IDs */
#include <sample/sample_msg_enum.h>
/* define message structures */
#define vl_typedefs
#include <sample/sample_all_api_h.h>
#undef vl_typedefs
/* define generated endian-swappers */
#define vl_endianfun
#include <sample/sample_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <sample/sample_all_api_h.h>
#undef vl_printfun
/* Get the API version number */
#define vl_api_version(n,v) static u32 api_version=(v);
#include <sample/sample_all_api_h.h>
#undef vl_api_version
/*
* A handy macro to set up a message reply.
* Assumes that the following variables are available:
* mp - pointer to request message
* rmp - pointer to reply message type
* rv - return value
*/
#define REPLY_MACRO(t) \
do { \
unix_shared_memory_queue_t * q = \
vl_api_client_index_to_input_queue (mp->client_index); \
if (!q) \
return; \
\
rmp = vl_msg_api_alloc (sizeof (*rmp)); \
rmp->_vl_msg_id = ntohs((t)+sm->msg_id_base); \
rmp->context = mp->context; \
rmp->retval = ntohl(rv); \
\
vl_msg_api_send_shmem (q, (u8 *)&rmp); \
} while(0);
/* List of message types that this plugin understands */
#define foreach_sample_plugin_api_msg \
_(SAMPLE_MACSWAP_ENABLE_DISABLE, sample_macswap_enable_disable)
/*
* This routine exists to convince the vlib plugin framework that
* we haven't accidentally copied a random .dll into the plugin directory.
*
* Also collects global variable pointers passed from the vpp engine
*/
clib_error_t *
vlib_plugin_register (vlib_main_t * vm, vnet_plugin_handoff_t * h,
int from_early_init)
{
sample_main_t * sm = &sample_main;
clib_error_t * error = 0;
sm->vlib_main = vm;
sm->vnet_main = h->vnet_main;
sm->ethernet_main = h->ethernet_main;
return error;
}
/* Action function shared between message handler and debug CLI */
int sample_macswap_enable_disable (sample_main_t * sm, u32 sw_if_index,
int enable_disable)
{
vnet_sw_interface_t * sw;
int rv = 0;
/* Utterly wrong? */
if (pool_is_free_index (sm->vnet_main->interface_main.sw_interfaces,
sw_if_index))
return VNET_API_ERROR_INVALID_SW_IF_INDEX;
/* Not a physical port? */
sw = vnet_get_sw_interface (sm->vnet_main, sw_if_index);
if (sw->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
return VNET_API_ERROR_INVALID_SW_IF_INDEX;
vnet_feature_enable_disable ("device-input", "sample",
sw_if_index, enable_disable, 0, 0);
return rv;
}
static clib_error_t *
macswap_enable_disable_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
sample_main_t * sm = &sample_main;
u32 sw_if_index = ~0;
int enable_disable = 1;
int rv;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
if (unformat (input, "disable"))
enable_disable = 0;
else if (unformat (input, "%U", unformat_vnet_sw_interface,
sm->vnet_main, &sw_if_index))
;
else
break;
}
if (sw_if_index == ~0)
return clib_error_return (0, "Please specify an interface...");
rv = sample_macswap_enable_disable (sm, sw_if_index, enable_disable);
switch(rv) {
case 0:
break;
case VNET_API_ERROR_INVALID_SW_IF_INDEX:
return clib_error_return
(0, "Invalid interface, only works on physical ports");
break;
case VNET_API_ERROR_UNIMPLEMENTED:
return clib_error_return (0, "Device driver doesn't support redirection");
break;
default:
return clib_error_return (0, "sample_macswap_enable_disable returned %d",
rv);
}
return 0;
}
VLIB_CLI_COMMAND (sr_content_command, static) = {
.path = "sample macswap",
.short_help =
"sample macswap <interface-name> [disable]",
.function = macswap_enable_disable_command_fn,
};
/* API message handler */
static void vl_api_sample_macswap_enable_disable_t_handler
(vl_api_sample_macswap_enable_disable_t * mp)
{
vl_api_sample_macswap_enable_disable_reply_t * rmp;
sample_main_t * sm = &sample_main;
int rv;
rv = sample_macswap_enable_disable (sm, ntohl(mp->sw_if_index),
(int) (mp->enable_disable));
REPLY_MACRO(VL_API_SAMPLE_MACSWAP_ENABLE_DISABLE_REPLY);
}
/* Set up the API message handling tables */
static clib_error_t *
sample_plugin_api_hookup (vlib_main_t *vm)
{
sample_main_t * sm = &sample_main;
#define _(N,n) \
vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \
#n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_sample_plugin_api_msg;
#undef _
return 0;
}
static clib_error_t * sample_init (vlib_main_t * vm)
{
sample_main_t * sm = &sample_main;
clib_error_t * error = 0;
u8 * name;
name = format (0, "sample_%08x%c", api_version, 0);
/* Ask for a correctly-sized block of API message decode slots */
sm->msg_id_base = vl_msg_api_get_msg_ids
((char *) name, VL_MSG_FIRST_AVAILABLE);
error = sample_plugin_api_hookup (vm);
vec_free(name);
return error;
}
VLIB_INIT_FUNCTION (sample_init);
VNET_FEATURE_INIT (sample, static) =
{
.arc_name = "device-input",
.node_name = "sample",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
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