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/*
* Copyright (c) 2023 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 "base.h"
#include "strategy.h"
#include <vpp_plugins/hicn/hicn_enums.h>
static int _ip_prefix_encode(const hicn_ip_address_t *address,
int prefix_length, int family,
vapi_type_prefix *out) {
out->len = prefix_length;
int ret = 0;
switch (family) {
case AF_INET:
memcpy(&out->address.un.ip4[0], &address->v4, 4);
out->address.af = ADDRESS_IP4;
break;
case AF_INET6:
memcpy(&out->address.un.ip6[0], &address->v6, 16);
out->address.af = ADDRESS_IP6;
break;
default:
// This should never happen
ret = -1;
}
return ret;
}
static vapi_enum_hicn_strategy _vpp_strategy_libhicn_to_hicnplugin_strategy(
strategy_type_t strategy) {
switch (strategy) {
case STRATEGY_TYPE_LOADBALANCER:
return HICN_STRATEGY_RR;
case STRATEGY_TYPE_LOCAL_REMOTE:
return HICN_STRATEGY_LR;
case STRATEGY_TYPE_REPLICATION:
return HICN_STRATEGY_RP;
case STRATEGY_TYPE_BESTPATH:
return HICN_STRATEGY_MW;
default:
return HICN_STRATEGY_NULL;
}
}
static vapi_error_e _hicn_strategy_set_cb(
vapi_ctx_t ctx, void *callback_ctx, vapi_error_e rv, bool is_last,
vapi_payload_hicn_api_strategy_set_reply *reply) {
if (reply == NULL || rv != VAPI_OK) return rv;
return reply->retval;
}
static int _vpp_strategy_set(hc_sock_vpp_data_t *s,
const hc_strategy_t *strategy) {
int ret = -1;
// Convert libhicn strategy enum to hicnplugin strategy enum and make sure it
// is valid
vapi_enum_hicn_strategy strategy_id =
_vpp_strategy_libhicn_to_hicnplugin_strategy(strategy->type);
if (strategy_id == HICN_STRATEGY_NULL) {
return -1;
}
// Construct API message
vapi_msg_hicn_api_strategy_set *msg =
vapi_alloc_hicn_api_strategy_set(s->g_vapi_ctx_instance);
// Fill it
msg->payload.strategy_id = clib_host_to_net_u32(strategy_id);
ret = _ip_prefix_encode(&strategy->address, strategy->len, strategy->family,
&msg->payload.prefix);
if (ret != 0) {
return -1;
}
vapi_lock();
ret = vapi_hicn_api_strategy_set(s->g_vapi_ctx_instance, msg,
_hicn_strategy_set_cb, NULL);
vapi_unlock();
return ret;
}
int vpp_strategy_create(hc_sock_t *sock, hc_object_t *object, hc_data_t *data) {
return -1;
}
int vpp_strategy_delete(hc_sock_t *sock, hc_object_t *object, hc_data_t *data) {
return -1;
}
int vpp_strategy_list(hc_sock_t *sock, hc_object_t *object, hc_data_t *data) {
return -1;
}
int vpp_strategy_set(hc_sock_t *sock, hc_object_t *object, hc_data_t *data) {
hc_sock_vpp_data_t *s = (hc_sock_vpp_data_t *)sock->data;
return _vpp_strategy_set(s, &object->strategy);
}
DECLARE_VPP_MODULE_OBJECT_OPS(vpp, strategy);
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