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/*
* mss_clamp_api.c - TCP MSS clamping plug-in
*
* Copyright (c) <current-year> <your-organization>
* 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/vnet.h>
#include <vnet/plugin/plugin.h> /* VLIB_PLUGIN_REGISTER */
#include <mss_clamp/mss_clamp.h>
#include <mss_clamp/mss_clamp.api_enum.h>
#include <mss_clamp/mss_clamp.api_types.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vpp/app/version.h> /* VPP_BUILD_VER */
#define REPLY_MSG_ID_BASE cm->msg_id_base
#include <vlibapi/api_helper_macros.h>
/* API message handler */
static void
vl_api_mss_clamp_enable_disable_t_handler (
vl_api_mss_clamp_enable_disable_t *mp)
{
mssc_main_t *cm = &mssc_main;
vl_api_mss_clamp_enable_disable_reply_t *rmp;
int rv;
VALIDATE_SW_IF_INDEX (mp);
rv = mssc_enable_disable (ntohl (mp->sw_if_index), mp->ipv4_direction,
mp->ipv6_direction, ntohs (mp->ipv4_mss),
ntohs (mp->ipv6_mss));
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_MSS_CLAMP_ENABLE_DISABLE_REPLY);
}
static void
send_mss_clamp_details (u32 sw_if_index, vl_api_registration_t *rp,
u32 context)
{
mssc_main_t *cm = &mssc_main;
vl_api_mss_clamp_details_t *rmp;
u16 mss4, mss6;
u8 dir4, dir6;
int rv;
mss4 = mss6 = 0;
dir4 = dir6 = MSS_CLAMP_DIR_NONE;
rv = mssc_get_mss (sw_if_index, &dir4, &dir6, &mss4, &mss6);
if (rv == VNET_API_ERROR_FEATURE_DISABLED)
return;
REPLY_MACRO_DETAILS4 (VL_API_MSS_CLAMP_DETAILS, rp, context, ({
rmp->sw_if_index = htonl (sw_if_index);
rmp->ipv4_mss = htons (mss4);
rmp->ipv6_mss = htons (mss6);
rmp->ipv4_direction = dir4;
rmp->ipv6_direction = dir6;
}));
}
static void
vl_api_mss_clamp_get_t_handler (vl_api_mss_clamp_get_t *mp)
{
mssc_main_t *cm = &mssc_main;
vl_api_mss_clamp_get_reply_t *rmp;
int rv = 0;
u32 sw_if_index = ntohl (mp->sw_if_index);
vl_api_registration_t *reg;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
if (sw_if_index == ~0)
{
if (vec_len (cm->dir_enabled4) == 0)
{
REPLY_MACRO2 (VL_API_MSS_CLAMP_GET_REPLY, ({ rmp->cursor = ~0; }));
return;
}
REPLY_AND_DETAILS_VEC_MACRO (
VL_API_MSS_CLAMP_GET_REPLY, cm->dir_enabled4, mp, rmp, rv,
({ send_mss_clamp_details (cursor, reg, mp->context); }));
}
else
{
VALIDATE_SW_IF_INDEX (mp);
send_mss_clamp_details (sw_if_index, reg, mp->context);
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO2 (VL_API_MSS_CLAMP_GET_REPLY, ({ rmp->cursor = ~0; }));
}
}
/* API definitions */
#include <vnet/format_fns.h>
#include <mss_clamp/mss_clamp.api.c>
/* Set up the API message handling tables */
static clib_error_t *
mssc_api_hookup (vlib_main_t *vm)
{
mssc_main_t *cm = &mssc_main;
cm->msg_id_base = setup_message_id_table ();
return 0;
}
VLIB_API_INIT_FUNCTION (mssc_api_hookup);
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "TCP MSS clamping plugin",
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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