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/*
* Copyright (c) 2015 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.
*/
/*
* srp/pg.c: packet generator srp interface
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <vlib/vlib.h>
#include <vnet/pg/pg.h>
#include <vnet/srp/srp.h>
#include <vnet/ethernet/ethernet.h>
typedef struct {
pg_edit_t ttl;
pg_edit_t is_inner_ring;
pg_edit_t mode;
pg_edit_t priority;
pg_edit_t parity;
pg_edit_t type;
pg_edit_t src_address;
pg_edit_t dst_address;
} pg_srp_header_t;
static inline void
pg_srp_header_init (pg_srp_header_t * e)
{
pg_edit_init (&e->ttl, srp_and_ethernet_header_t, srp.ttl);
pg_edit_init_bitfield (&e->is_inner_ring, srp_and_ethernet_header_t,
srp.as_u16,
7, 1);
pg_edit_init_bitfield (&e->mode, srp_and_ethernet_header_t,
srp.as_u16,
4, 3);
pg_edit_init_bitfield (&e->priority, srp_and_ethernet_header_t,
srp.as_u16,
1, 3);
pg_edit_init_bitfield (&e->parity, srp_and_ethernet_header_t,
srp.as_u16,
0, 1);
pg_edit_init (&e->type, srp_and_ethernet_header_t, ethernet.type);
pg_edit_init (&e->src_address, srp_and_ethernet_header_t, ethernet.src_address);
pg_edit_init (&e->dst_address, srp_and_ethernet_header_t, ethernet.dst_address);
}
uword
unformat_pg_srp_header (unformat_input_t * input, va_list * args)
{
pg_stream_t * s = va_arg (*args, pg_stream_t *);
pg_srp_header_t * e;
u32 error, group_index;
e = pg_create_edit_group (s, sizeof (e[0]), sizeof (srp_header_t),
&group_index);
pg_srp_header_init (e);
error = 1;
if (! unformat (input, "%U: %U -> %U",
unformat_pg_edit,
unformat_ethernet_type_net_byte_order, &e->type,
unformat_pg_edit,
unformat_ethernet_address, &e->src_address,
unformat_pg_edit,
unformat_ethernet_address, &e->dst_address))
goto done;
{
srp_header_t h;
h.as_u16 = 0;
h.mode = SRP_MODE_data;
h.ttl = 255;
h.parity = count_set_bits (h.as_u16) ^ 1;
pg_edit_set_fixed (&e->mode, h.mode);
pg_edit_set_fixed (&e->ttl, h.ttl);
pg_edit_set_fixed (&e->is_inner_ring, h.is_inner_ring);
pg_edit_set_fixed (&e->priority, h.priority);
pg_edit_set_fixed (&e->parity, h.parity);
}
error = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "mode %U",
unformat_pg_edit,
unformat_pg_number, &e->mode))
;
else if (unformat (input, "ttl %U",
unformat_pg_edit,
unformat_pg_number, &e->ttl))
;
else if (unformat (input, "priority %U",
unformat_pg_edit,
unformat_pg_number, &e->priority))
;
else
break;
}
{
ethernet_main_t * em = ðernet_main;
ethernet_type_info_t * ti = 0;
pg_node_t * pg_node = 0;
if (e->type.type == PG_EDIT_FIXED)
{
u16 t = *(u16 *) e->type.values[PG_EDIT_LO];
ti = ethernet_get_type_info (em, clib_net_to_host_u16 (t));
if (ti && ti->node_index != ~0)
pg_node = pg_get_node (ti->node_index);
}
if (pg_node && pg_node->unformat_edit
&& unformat_user (input, pg_node->unformat_edit, s))
;
else if (! unformat_user (input, unformat_pg_payload, s))
goto done;
}
done:
if (error)
pg_free_edit_group (s);
return error == 0;
}
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