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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 <vlib/vlib.h>
#include <vnet/vnet.h>
#include "face_udp.h"
#include "face_udp_node.h"
#include "dpo_udp.h"
#include "../face.h"
#include "../../strategy.h"
#include "../../strategy_dpo_manager.h"
#include "../../hicn.h"
#include "../../mapme.h" // HICN_MAPME_EVENT_*
#include "../../mapme_eventmgr.h" // hicn_mapme_eventmgr_process_node
extern vlib_node_registration_t hicn_mapme_eventmgr_process_node;
mhash_t hicn_face_udp_hashtb;
dpo_type_t hicn_face_udp_type;
ip4_header_t ip4_header_skl = {
.ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS,
.tos = 0x00,
.length = (u16) 0,
.fragment_id = (u16) 0,
.flags_and_fragment_offset = (u16) 0,
.ttl = 254,
.protocol = IP_PROTOCOL_UDP,
.checksum = 0,
.src_address = {{0}},
.dst_address = {{0}},
};
ip6_header_t ip6_header_skl = {
#if CLIB_ARCH_IS_BIG_ENDIAN
.ip_version_traffic_class_and_flow_label = 0x60000000,
#else
.ip_version_traffic_class_and_flow_label = 0x00000060,
#endif
.payload_length = (u16) 0,
.protocol = IP_PROTOCOL_UDP,
.hop_limit = 254,
.src_address = {{0}},
.dst_address = {{0}}
};
u32 strategy_face_udp4_vlib_edge;
u32 strategy_face_udp6_vlib_edge;
/* Separated from the hicn_face_udp_init because it cannot be called by the
init macro due to dependencies with other modules not yet initialied */
void
hicn_face_udp_init_internal ()
{
ip4_header_t *ip4_hdr = &ip4_header_skl;
ip4_header_skl.checksum = ip4_header_checksum (ip4_hdr);
}
void
hicn_face_udp_init (vlib_main_t * vm)
{
int strategy_nodes_n = hicn_strategy_get_all_available ();
/* Default Strategy has index 0 and it always exists */
strategy_face_udp4_vlib_edge = vlib_node_add_next (vm,
hicn_dpo_get_strategy_vft
(default_dpo.
hicn_dpo_get_type ())->
get_strategy_node_index
(),
hicn_face_udp4_output_node.
index);
strategy_face_udp6_vlib_edge =
vlib_node_add_next (vm,
hicn_dpo_get_strategy_vft (default_dpo.
hicn_dpo_get_type ())->
get_strategy_node_index (),
hicn_face_udp6_output_node.index);
/*
* Create and edge between al the other strategy nodes
* and the udp_output nodes.
*/
for (int i = 1; i < strategy_nodes_n; i++)
{
u32 temp_index4 = vlib_node_add_next (vm,
hicn_dpo_get_strategy_vft_from_id
(i)->get_strategy_node_index (),
hicn_face_udp4_output_node.index);
u32 temp_index6 = vlib_node_add_next (vm,
hicn_dpo_get_strategy_vft_from_id
(i)->get_strategy_node_index (),
hicn_face_udp6_output_node.index);
ASSERT (temp_index4 == strategy_face_udp4_vlib_edge);
ASSERT (temp_index6 == strategy_face_udp6_vlib_edge);
}
hicn_dpo_udp_module_init ();
register_face_type (hicn_face_udp_type, &udp_vft, "udp");;
}
int
hicn_face_udp_add (const ip46_address_t * local_addr,
const ip46_address_t * remote_addr, u16 local_port,
u16 remote_port, u32 swif, hicn_face_id_t * pfaceid)
{
fib_protocol_t fib_type;
vnet_link_t link_type;
adj_index_t ip_adj;
int ret = HICN_ERROR_NONE;
dpo_proto_t dpo_proto;
hicn_face_flags_t flags = (hicn_face_flags_t) 0;
flags |= HICN_FACE_FLAGS_FACE;
if (ip46_address_is_ip4 (local_addr) && ip46_address_is_ip4 (remote_addr))
{
link_type = VNET_LINK_IP4;
fib_type = FIB_PROTOCOL_IP4;
ip_adj = adj_nbr_add_or_lock (fib_type, link_type, remote_addr, swif);
hicn_face_t *face =
hicn_face_udp4_get (&local_addr->ip4, &remote_addr->ip4, local_port,
remote_port);
if (face != NULL)
return HICN_ERROR_FACE_ALREADY_CREATED;
pool_get (hicn_dpoi_face_pool, face);
hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
clib_memcpy (&(udp_face->hdrs.ip4.ip), &ip4_header_skl,
sizeof (ip4_header_t));
clib_memcpy (&(udp_face->hdrs.ip4.ip.src_address), &(local_addr->ip4),
sizeof (ip4_address_t));
clib_memcpy (&(udp_face->hdrs.ip4.ip.dst_address), &(remote_addr->ip4),
sizeof (ip4_address_t));
udp_face->hdrs.ip4.udp.src_port = local_port;
udp_face->hdrs.ip4.udp.dst_port = remote_port;
ip_csum_t csum = udp_face->hdrs.ip4.ip.checksum;
csum = ip_csum_sub_even (csum, ip4_header_skl.src_address.as_u32);
csum = ip_csum_sub_even (csum, ip4_header_skl.dst_address.as_u32);
csum =
ip_csum_add_even (csum, udp_face->hdrs.ip4.ip.src_address.as_u32);
csum =
ip_csum_add_even (csum, udp_face->hdrs.ip4.ip.dst_address.as_u32);
udp_face->hdrs.ip4.ip.checksum = ip_csum_fold (csum);
face->shared.adj = ip_adj;
face->shared.sw_if = swif;
face->shared.pl_id = (u16) 0;
face->shared.face_type = hicn_face_udp_type;
face->shared.flags = flags;
face->shared.locks = 0;
hicn_face_udp_key_t key;
hicn_face_udp4_get_key (&local_addr->ip4, &remote_addr->ip4, local_port,
remote_port, &key);
hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
*pfaceid = hicn_dpoi_get_index (face);
dpo_proto = DPO_PROTO_IP4;
}
else if (!ip46_address_is_ip4 (local_addr)
&& !ip46_address_is_ip4 (remote_addr))
{
link_type = VNET_LINK_IP6;
fib_type = FIB_PROTOCOL_IP6;
ip_adj = adj_nbr_add_or_lock (fib_type, link_type, remote_addr, swif);
hicn_face_t *face =
hicn_face_udp6_get (&local_addr->ip6, &remote_addr->ip6, local_port,
remote_port);
if (face != NULL)
return HICN_ERROR_FACE_ALREADY_CREATED;
pool_get (hicn_dpoi_face_pool, face);
hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
clib_memcpy (&(udp_face->hdrs.ip6.ip), &ip6_header_skl,
sizeof (ip6_header_t));
clib_memcpy (&(udp_face->hdrs.ip6.ip.src_address), local_addr,
sizeof (ip6_address_t));
clib_memcpy (&(udp_face->hdrs.ip6.ip.dst_address), remote_addr,
sizeof (ip6_address_t));
udp_face->hdrs.ip6.udp.src_port = local_port;
udp_face->hdrs.ip6.udp.dst_port = remote_port;
face->shared.adj = ip_adj;
face->shared.sw_if = swif;
face->shared.pl_id = (u16) 0;
face->shared.face_type = hicn_face_udp_type;
face->shared.flags = flags;
face->shared.locks = 0;
hicn_face_udp_key_t key;
hicn_face_udp6_get_key (&local_addr->ip6, &remote_addr->ip6, local_port,
remote_port, &key);
hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
*pfaceid = hicn_dpoi_get_index (face);
dpo_proto = DPO_PROTO_IP6;
}
else
{
return HICN_ERROR_IPS_ADDR_TYPE_NONUNIFORM;
}
retx_t *retx = vlib_process_signal_event_data (vlib_get_main (),
hicn_mapme_eventmgr_process_node.
index,
HICN_MAPME_EVENT_FACE_ADD, 1,
sizeof (retx_t));
*retx = (retx_t)
{
.prefix = 0,.dpo = (dpo_id_t)
{
.dpoi_type = hicn_face_udp_type,.dpoi_proto =
dpo_proto,.dpoi_next_node = 0,.dpoi_index = *pfaceid,}
};
return ret;
}
int
hicn_face_udp_del (u32 faceid)
{
return hicn_face_del (faceid);
}
u8 *
format_hicn_face_udp (u8 * s, va_list * args)
{
hicn_face_id_t face_id = va_arg (*args, index_t);
CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
hicn_face_t *face;
hicn_face_udp_t *udp_face;
ip_adjacency_t *adj;
u8 ipv = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
vnet_main_t *vnm = vnet_get_main ();
face = hicn_dpoi_get_from_idx (face_id);
udp_face = (hicn_face_udp_t *) (face->data);
if (face->shared.flags & HICN_FACE_FLAGS_FACE)
{
ASSERT (face->shared.adj != (adj_index_t) ~ 0);
adj = adj_get (face->shared.adj);
s = format (s, "%U Face %d: ", format_white_space, indent, face_id);
if (udp_face->hdrs.ip4.ip.ip_version_and_header_length == ipv)
{
s = format (s, "type UDP local %U|%u ",
format_ip4_address, &udp_face->hdrs.ip4.ip.src_address,
clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.src_port));
s =
format (s, "remote %U|%u ", format_ip4_address,
&udp_face->hdrs.ip4.ip.dst_address,
clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.dst_port));
s = format (s, "%U", format_vnet_link, adj->ia_link);
s = format (s, " dev %U", format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, face->shared.sw_if));
if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
s = format (s, " (deleted)");
}
else
{
s = format (s, "type UDP local %U|%u ",
format_ip6_address, &udp_face->hdrs.ip6.ip.src_address,
clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.src_port));
s =
format (s, "remote %U|%u", format_ip6_address,
&udp_face->hdrs.ip6.ip.dst_address,
clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.dst_port));
s = format (s, "%U", format_vnet_link, adj->ia_link);
s = format (s, " dev %U", format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, face->shared.sw_if));
if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
s = format (s, " (deleted)");
}
}
else
{
s = format (s, "IFace %d: ", format_white_space, indent, face_id);
if (udp_face->hdrs.ip4.ip.ip_version_and_header_length == ipv)
{
s = format (s, "type UDP local %U|%u",
format_ip4_address, &udp_face->hdrs.ip4.ip.src_address,
clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.src_port));
s =
format (s, " local %U|%u", format_ip4_address,
&udp_face->hdrs.ip4.ip.dst_address,
clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.dst_port));
s =
format (s, " dev %U", format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, face->shared.sw_if));
if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
s = format (s, " (deleted)");
}
else
{
s = format (s, "type UDP local %U|%u",
format_ip6_address, &udp_face->hdrs.ip6.ip.src_address,
clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.src_port));
s =
format (s, " remote %U|%u", format_ip6_address,
&udp_face->hdrs.ip6.ip.dst_address,
clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.dst_port));
s =
format (s, " dev %U", format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, face->shared.sw_if));
if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
s = format (s, " (deleted)");
}
}
return s;
}
void
hicn_face_udp_get_dpo (hicn_face_t * face, dpo_id_t * dpo)
{
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;
return hicn_dpo_udp_create_from_face (face, dpo,
version ==
(u8) 4 ? strategy_face_udp4_vlib_edge
: strategy_face_udp6_vlib_edge);
}
hicn_face_vft_t udp_vft = {
.format_face = format_hicn_face_udp,
.hicn_face_del = hicn_face_udp_del,
.hicn_face_get_dpo = hicn_face_udp_get_dpo,
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
