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/*
* hdlc_pg.c: packet generator gre interface
*
* Copyright (c) 2012 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/pg/pg.h>
#include <vnet/gre/gre.h>
typedef struct {
pg_edit_t flags_and_version;
pg_edit_t protocol;
} pg_gre_header_t;
static inline void
pg_gre_header_init (pg_gre_header_t * e)
{
pg_edit_init (&e->flags_and_version, gre_header_t, flags_and_version);
pg_edit_init (&e->protocol, gre_header_t, protocol);
}
uword
unformat_pg_gre_header (unformat_input_t * input, va_list * args)
{
pg_stream_t * s = va_arg (*args, pg_stream_t *);
pg_gre_header_t * h;
u32 group_index, error;
h = pg_create_edit_group (s, sizeof (h[0]), sizeof (gre_header_t),
&group_index);
pg_gre_header_init (h);
pg_edit_set_fixed (&h->flags_and_version, 0);
error = 1;
if (! unformat (input, "%U",
unformat_pg_edit,
unformat_gre_protocol_net_byte_order, &h->protocol))
goto done;
{
gre_main_t * pm = &gre_main;
gre_protocol_info_t * pi = 0;
pg_node_t * pg_node = 0;
if (h->protocol.type == PG_EDIT_FIXED)
{
u16 t = *(u16 *) h->protocol.values[PG_EDIT_LO];
pi = gre_get_protocol_info (pm, clib_net_to_host_u16 (t));
if (pi && pi->node_index != ~0)
pg_node = pg_get_node (pi->node_index);
}
if (pg_node && pg_node->unformat_edit
&& unformat_user (input, pg_node->unformat_edit, s))
;
}
error = 0;
done:
if (error)
pg_free_edit_group (s);
return error == 0;
}
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