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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.
*/
/*
* ethernet_pg.c: packet generator ethernet 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/ethernet/ethernet.h>
typedef struct
{
pg_edit_t type;
pg_edit_t src_address;
pg_edit_t dst_address;
} pg_ethernet_header_t;
static inline void
pg_ethernet_header_init (pg_ethernet_header_t * e)
{
pg_edit_init (&e->type, ethernet_header_t, type);
pg_edit_init (&e->src_address, ethernet_header_t, src_address);
pg_edit_init (&e->dst_address, ethernet_header_t, dst_address);
}
typedef struct
{
pg_edit_t type;
pg_edit_t id;
pg_edit_t cfi;
pg_edit_t priority;
} pg_ethernet_vlan_header_t;
static inline void
pg_ethernet_vlan_header_init (pg_ethernet_vlan_header_t * v, int vlan_index)
{
ASSERT (vlan_index < ARRAY_LEN (((ethernet_max_header_t *) 0)->vlan));
pg_edit_init (&v->type, ethernet_max_header_t, vlan[vlan_index].type);
pg_edit_init_bitfield (&v->id, ethernet_max_header_t,
vlan[vlan_index].priority_cfi_and_id, 0, 12);
pg_edit_init_bitfield (&v->cfi, ethernet_max_header_t,
vlan[vlan_index].priority_cfi_and_id, 12, 1);
pg_edit_init_bitfield (&v->priority, ethernet_max_header_t,
vlan[vlan_index].priority_cfi_and_id, 13, 3);
}
uword
unformat_pg_ethernet_header (unformat_input_t * input, va_list * args)
{
pg_stream_t *s = va_arg (*args, pg_stream_t *);
pg_ethernet_header_t *e;
pg_ethernet_vlan_header_t *v;
pg_edit_t *ether_type_edit;
u32 n_vlan, error, group_index;
e = pg_create_edit_group (s, sizeof (e[0]), sizeof (ethernet_header_t),
&group_index);
pg_ethernet_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;
n_vlan = 0;
while (unformat (input, "vlan"))
{
v = pg_add_edits (s, sizeof (v[0]), sizeof (ethernet_vlan_header_t),
group_index);
pg_ethernet_vlan_header_init (v, n_vlan);
if (!unformat_user (input, unformat_pg_edit,
unformat_pg_number, &v->id))
goto done;
if (!unformat (input, "priority %U", unformat_pg_edit,
unformat_pg_number, &v->priority))
pg_edit_set_fixed (&v->priority, 0);
if (!unformat (input, "cfi %U", unformat_pg_edit,
unformat_pg_number, &v->cfi))
pg_edit_set_fixed (&v->cfi, 0);
/* Too many vlans given. */
if (n_vlan >= 2)
goto done;
n_vlan++;
}
/* Address of e may have changed due to vlan edits being added */
e = pg_get_edit_group (s, group_index);
v = (void *) (e + 1);
/* Correct types for vlan packets. */
ether_type_edit = &e->type;
if (n_vlan > 0)
{
int i;
ether_type_edit = &v[n_vlan - 1].type;
pg_edit_copy_type_and_values (ether_type_edit, &e->type);
pg_edit_set_fixed (&e->type, ETHERNET_TYPE_VLAN);
for (i = 0; i < n_vlan - 1; i++)
pg_edit_set_fixed (&v[i].type, ETHERNET_TYPE_VLAN);
}
{
ethernet_main_t *em = ðernet_main;
ethernet_type_info_t *ti = 0;
pg_node_t *pg_node = 0;
if (ether_type_edit->type == PG_EDIT_FIXED)
{
u16 t = *(u16 *) ether_type_edit->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;
}
error = 0;
done:
if (error)
pg_free_edit_group (s);
return error == 0;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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