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/*
* Copyright (c) 2017-2019 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 "dpo_udp.h"
#include <vnet/ip/format.h>
#include <vnet/adj/adj.h>
#include <vnet/vnet.h>
#include <vlib/vlib.h>
const static char *const hicn_face_ip4udp_nodes[] = {
"hicn-face-encap-udp4",
"hicn-face-decap-udp4",
"hicn-iface-decap-udp4",
"hicn-iface-encap-udp4",
NULL,
};
const static char *const hicn_face_ip6udp_nodes[] = {
"hicn-face-encap-udp6",
"hicn-face-decap-udp6",
"hicn-iface-decap-udp6",
"hicn-iface-encap-udp6",
NULL,
};
const static char *const *const hicn_ipudp_nodes[DPO_PROTO_NUM] = {
[DPO_PROTO_IP4] = hicn_face_ip4udp_nodes,
[DPO_PROTO_IP6] = hicn_face_ip6udp_nodes
};
const static dpo_vft_t hicn_dpoi_udp_vft = {
.dv_lock = hicn_face_lock,
.dv_unlock = hicn_face_unlock,
.dv_format = format_hicn_face_udp,
};
/* Must be executed after all the strategy nodes are created */
void
hicn_dpo_udp_module_init (void)
{
mhash_init (&hicn_face_udp_hashtb, sizeof (hicn_face_id_t) /* value */ ,
sizeof (hicn_face_udp_key_t) /* key */ );
/*
* How much useful is the following registration?
* So far it seems that we need it only for setting the dpo_type.
*/
hicn_face_udp_type =
dpo_register_new_type (&hicn_dpoi_udp_vft, hicn_ipudp_nodes);
}
/* Here udp ports are in host order, move them to network order to do the lookup */
int
hicn_dpo_udp4_create (dpo_id_t * dpo,
const ip4_address_t * src_ip,
const ip4_address_t * dst_ip,
u16 src_port, u16 dst_port,
u32 sw_if,
adj_index_t ip_adj,
u32 node_index,
hicn_face_flags_t flags, hicn_face_id_t * face_id)
{
u16 net_src_port = clib_host_to_net_u16 (src_port);
u16 net_dst_port = clib_host_to_net_u16 (dst_port);
hicn_face_t *face =
hicn_face_udp4_get (src_ip, dst_ip, net_src_port, net_dst_port);
u8 hicnb_flags;
/* ip_csum_t sum0; */
if (face != NULL)
return HICN_ERROR_FACE_ALREADY_CREATED;
hicn_dpo_udp4_add_and_lock (dpo, src_ip, dst_ip, net_src_port, net_dst_port,
node_index, &hicnb_flags, sw_if);
face = hicn_dpoi_get_from_idx (dpo->dpoi_index);
hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
udp_face->hdrs.ip4.ip.checksum =
ip4_header_checksum (&(udp_face->hdrs.ip4.ip));
face->shared.flags = flags;
face->shared.adj = ip_adj;
*face_id = hicn_dpoi_get_index (face);
return HICN_ERROR_NONE;
}
int
hicn_dpo_udp6_create (dpo_id_t * dpo,
const ip6_address_t * src_ip,
const ip6_address_t * dst_ip,
u16 src_port, u16 dst_port,
u32 sw_if,
adj_index_t ip_adj,
u32 node_index,
hicn_face_flags_t flags, hicn_face_id_t * face_id)
{
u16 net_src_port = clib_host_to_net_u16 (src_port);
u16 net_dst_port = clib_host_to_net_u16 (dst_port);
hicn_face_t *face =
hicn_face_udp6_get (src_ip, dst_ip, net_src_port, net_dst_port);
u8 hicnb_flags;
if (face != NULL)
return HICN_ERROR_FACE_ALREADY_CREATED;
hicn_dpo_udp6_add_and_lock (dpo, src_ip, dst_ip, net_src_port, net_dst_port,
node_index, &hicnb_flags, sw_if);
face = hicn_dpoi_get_from_idx (dpo->dpoi_index);
face->shared.flags = flags;
face->shared.adj = ip_adj;
*face_id = hicn_dpoi_get_index (face);
return HICN_ERROR_NONE;
}
void
hicn_dpo_udp_create_from_face (hicn_face_t * face, dpo_id_t * dpo,
u16 dpoi_next_node)
{
hicn_face_id_t face_dpoi_id = hicn_dpoi_get_index (face);
hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
u8 version =
(face_udp->hdrs.ip4.ip.ip_version_and_header_length & 0xf0) >> 4;
dpo_set (dpo, face->shared.face_type,
version == 4 ? DPO_PROTO_IP4 : DPO_PROTO_IP6, face_dpoi_id);
dpo->dpoi_next_node = dpoi_next_node;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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