#!/usr/bin/env python
"""
UDP encap objects
"""
from vpp_object import VppObject
from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
def find_udp_encap(test, ue):
encaps = test.vapi.udp_encap_dump()
for e in encaps:
if ue.id == e.udp_encap.id \
and ue.src_ip == str(e.udp_encap.src_ip) \
and ue.dst_ip == str(e.udp_encap.dst_ip) \
and e.udp_encap.dst_port == ue.dst_port \
and e.udp_encap.src_port == ue.src_port:
return True
return False
class VppUdpEncap(VppObject):
def __init__(self,
test,
src_ip,
dst_ip,
src_port,
dst_port,
table_id=0):
self._test = test
self.table_id = table_id
self.src_ip_s = src_ip
self.dst_ip_s = dst_ip
self.src_ip = src_ip
self.dst_ip = dst_ip
self.
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/*
* Copyright (c) 2018 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 <plugins/gbp/gbp_route_domain.h>
#include <plugins/gbp/gbp_endpoint.h>
#include <vnet/dpo/dvr_dpo.h>
#include <vnet/fib/fib_table.h>
/**
* A fixed MAC address to use as the source MAC for packets L3 switched
* onto the routed uu-fwd interfaces.
* Magic values - origin lost to the mists of time...
*/
/* *INDENT-OFF* */
const static mac_address_t GBP_ROUTED_SRC_MAC = {
.bytes = {
0x0, 0x22, 0xBD, 0xF8, 0x19, 0xFF,
}
};
const static mac_address_t GBP_ROUTED_DST_MAC = {
.bytes = {
00, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
}
};
/* *INDENT-ON* */
/**
* Pool of GBP route_domains
*/
gbp_route_domain_t *gbp_route_domain_pool;
/**
* DB of route_domains
*/
typedef struct gbp_route_domain_db_t
{
uword *gbd_by_rd_id;
} gbp_route_domain_db_t;
static gbp_route_domain_db_t gbp_route_domain_db;
static fib_source_t gbp_fib_source;
/**
* logger
*/
vlib_log_class_t grd_logger;
#define GBP_BD_DBG(...) \
vlib_log_debug (grd_logger, __VA_ARGS__);
index_t
gbp_route_domain_index (const gbp_route_domain_t * grd)
{
return (grd - gbp_route_domain_pool);
}
gbp_route_domain_t *
gbp_route_domain_get (index_t i)
{
return (pool_elt_at_index (gbp_route_domain_pool, i));
}
static void
gbp_route_domain_lock (index_t i)
{
gbp_route_domain_t *grd;
grd = gbp_route_domain_get (i);
grd->grd_locks++;
}
index_t
gbp_route_domain_find (u32 rd_id)
{
uword *p;
p = hash_get (gbp_route_domain_db.gbd_by_rd_id, rd_id);
if (NULL != p)
return p[0];
return (INDEX_INVALID);
}
index_t
gbp_route_domain_find_and_lock (u32 rd_id)
{
index_t grdi;
grdi = gbp_route_domain_find (rd_id);
if (INDEX_INVALID != grdi)
{
gbp_route_domain_lock (grdi);
}
return (grdi);
}
static void
gbp_route_domain_db_add (gbp_route_domain_t * grd)
{
index_t grdi = grd - gbp_route_domain_pool;
hash_set (gbp_route_domain_db.gbd_by_rd_id, grd->grd_id, grdi);
}
static void
gbp_route_domain_db_remove (gbp_route_domain_t * grd)
{
hash_unset (gbp_route_domain_db.gbd_by_rd_id, grd->grd_id);
}
int
gbp_route_domain_add_and_lock (u32 rd_id,
gbp_scope_t scope,
u32 ip4_table_id,
u32 ip6_table_id,
u32 ip4_uu_sw_if_index, u32 ip6_uu_sw_if_index)
{
gbp_route_domain_t *grd;
index_t grdi;
grdi = gbp_route_domain_find (rd_id);
if (INDEX_INVALID == grdi)
{
fib_protocol_t fproto;
pool_get_zero (gbp_route_domain_pool, grd);
grd->grd_id = rd_id;
grd->grd_scope = scope;
grd->grd_table_id[FIB_PROTOCOL_IP4] = ip4_table_id;
grd->grd_table_id[FIB_PROTOCOL_IP6] = ip6_table_id;
grd->grd_uu_sw_if_index[FIB_PROTOCOL_IP4] = ip4_uu_sw_if_index;
grd->grd_uu_sw_if_index[FIB_PROTOCOL_IP6] = ip6_uu_sw_if_index;
FOR_EACH_FIB_IP_PROTOCOL (fproto)
{
grd->grd_fib_index[fproto] =
fib_table_find_or_create_and_lock (fproto,
grd->grd_table_id[fproto],
gbp_fib_source);
if (~0 != grd->grd_uu_sw_if_index[fproto])
{
ethernet_header_t *eth;
u8 *rewrite;
rewrite = NULL;
vec_validate (rewrite, sizeof (*eth) - 1);
eth = (ethernet_header_t *) rewrite;
eth->type = clib_host_to_net_u16 ((fproto == FIB_PROTOCOL_IP4 ?
ETHERNET_TYPE_IP4 :
ETHERNET_TYPE_IP6));
mac_address_to_bytes (gbp_route_domain_get_local_mac (),
eth->src_address);
mac_address_to_bytes (gbp_route_domain_get_remote_mac (),
eth->dst_address);
/*
* create an adjacency out of the uu-fwd interfaces that will
* be used when adding subnet routes.
*/
grd->grd_adj[fproto] =
adj_nbr_add_or_lock_w_rewrite (fproto,
fib_proto_to_link (fproto),
&ADJ_BCAST_ADDR,
grd->grd_uu_sw_if_index[fproto],
rewrite);
}
else
{
grd->grd_adj[fproto] = INDEX_INVALID;
}
}
gbp_route_domain_db_add (grd);
}
else
{
grd = gbp_route_domain_get (grdi);
}
grd->grd_locks++;
GBP_BD_DBG ("add: %U", format_gbp_route_domain, grd);
return (0);
}
void
gbp_route_domain_unlock (index_t index)
{
gbp_route_domain_t *grd;
grd = gbp_route_domain_get (index);
grd->grd_locks--;
if (0 == grd->grd_locks)
{
fib_protocol_t fproto;
GBP_BD_DBG ("destroy: %U", format_gbp_route_domain, grd);
FOR_EACH_FIB_IP_PROTOCOL (fproto)
{
fib_table_unlock (grd->grd_fib_index[fproto], fproto, gbp_fib_source);
if (INDEX_INVALID != grd->grd_adj[fproto])
adj_unlock (grd->grd_adj[fproto]);
}
gbp_route_domain_db_remove (grd);
pool_put (gbp_route_domain_pool, grd);
}
}
u32
gbp_route_domain_get_rd_id (index_t grdi)
{
gbp_route_domain_t *grd;
grd = gbp_route_domain_get (grdi);
return (grd->grd_id);
}
gbp_scope_t
gbp_route_domain_get_scope (index_t grdi)
{
gbp_route_domain_t *grd;
grd = gbp_route_domain_get (grdi);
return (grd->grd_scope);
}
int
gbp_route_domain_delete (u32 rd_id)
{
index_t grdi;
GBP_BD_DBG ("del: %d", rd_id);
grdi = gbp_route_domain_find (rd_id);
if (INDEX_INVALID != grdi)
{
GBP_BD_DBG ("del: %U", format_gbp_route_domain,
gbp_route_domain_get (grdi));
gbp_route_domain_unlock (grdi);
return (0);
}
return (VNET_API_ERROR_NO_SUCH_ENTRY);
}
const mac_address_t *
gbp_route_domain_get_local_mac (void)
{
return (&GBP_ROUTED_SRC_MAC);
}
const mac_address_t *
gbp_route_domain_get_remote_mac (void)
{
return (&GBP_ROUTED_DST_MAC);
}
void
gbp_route_domain_walk (gbp_route_domain_cb_t cb, void *ctx)
{
gbp_route_domain_t *gbpe;
/* *INDENT-OFF* */
pool_foreach (gbpe, gbp_route_domain_pool)
{
if (!cb(gbpe, ctx))
break;
}
/* *INDENT-ON* */
}
static clib_error_t *
gbp_route_domain_cli (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
vnet_main_t *vnm = vnet_get_main ();
u32 ip4_uu_sw_if_index = ~0;
u32 ip6_uu_sw_if_index = ~0;
u32 ip4_table_id = ~0;
u32 ip6_table_id = ~0;
u32 scope = ~0;
u32 rd_id = ~0;
u8 add = 1;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "ip4-uu %U", unformat_vnet_sw_interface,
vnm, &ip4_uu_sw_if_index))
;
else if (unformat (input, "ip6-uu %U", unformat_vnet_sw_interface,
vnm, &ip6_uu_sw_if_index))
;
else if (unformat (input, "ip4-table-id %d", &ip4_table_id))
;
else if (unformat (input, "ip6-table-id %d", &ip6_table_id))
;
else if (unformat (input, "add"))
add = 1;
else if (unformat (input, "del"))
add = 0;
else if (unformat (input, "rd %d", &rd_id))
;
else if (unformat (input, "scope %d", &scope))
;
else
break;
}
if (~0 == rd_id)
return clib_error_return (0, "RD-ID must be specified");
if (add)
{
if (~0 == ip4_table_id)
return clib_error_return (0, "IP4 table-ID must be specified");
if (~0 == ip6_table_id)
return clib_error_return (0, "IP6 table-ID must be specified");
gbp_route_domain_add_and_lock (rd_id, scope,
ip4_table_id,
ip6_table_id,
ip4_uu_sw_if_index, ip6_uu_sw_if_index);
}
else
gbp_route_domain_delete (rd_id);
return (NULL);
}
/*?
* Configure a GBP route-domain
*
* @cliexpar
* @cliexstart{gbp route-domain [del] rd <ID> ip4-table-id <ID> ip6-table-id <ID> [ip4-uu <interface>] [ip6-uu <interface>]}
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (gbp_route_domain_cli_node, static) = {
.path = "gbp route-domain",
.short_help = "gbp route-domain [del] rd <ID> ip4-table-id <ID> ip6-table-id <ID> [ip4-uu <interface>] [ip6-uu <interface>]",
.function = gbp_route_domain_cli,
};
u8 *
format_gbp_route_domain (u8 * s, va_list * args)
{
gbp_route_domain_t *grd = va_arg (*args, gbp_route_domain_t*);
vnet_main_t *vnm = vnet_get_main ();
if (NULL != grd)
s = format (s, "[%d] rd:%d ip4-uu:%U ip6-uu:%U locks:%d",
grd - gbp_route_domain_pool,
grd->grd_id,
format_vnet_sw_if_index_name, vnm, grd->grd_uu_sw_if_index[FIB_PROTOCOL_IP4],
format_vnet_sw_if_index_name, vnm, grd->grd_uu_sw_if_index[FIB_PROTOCOL_IP6],
grd->grd_locks);
else
s = format (s, "NULL");
return (s);
}
static int
gbp_route_domain_show_one (gbp_route_domain_t *gb, void *ctx)
{
vlib_main_t *vm;
vm = ctx;
vlib_cli_output (vm, " %U",format_gbp_route_domain, gb);
return (1);
}
static clib_error_t *
gbp_route_domain_show (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
vlib_cli_output (vm, "Route-Domains:");
gbp_route_domain_walk (gbp_route_domain_show_one, vm);
return (NULL);
}
/*?
* Show Group Based Policy Route_Domains and derived information
*
* @cliexpar
* @cliexstart{show gbp route_domain}
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (gbp_route_domain_show_node, static) = {
.path = "show gbp route-domain",
.short_help = "show gbp route-domain\n",
.function = gbp_route_domain_show,
};
/* *INDENT-ON* */
static clib_error_t *
gbp_route_domain_init (vlib_main_t * vm)
{
grd_logger = vlib_log_register_class ("gbp", "rd");
gbp_fib_source = fib_source_allocate ("gbp-rd",
FIB_SOURCE_PRIORITY_HI,
FIB_SOURCE_BH_DROP);
return (NULL);
}
VLIB_INIT_FUNCTION (gbp_route_domain_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/