diff options
Diffstat (limited to 'src/vnet/ethernet/pg.c')
| -rw-r--r-- | src/vnet/ethernet/pg.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/vnet/ethernet/pg.c b/src/vnet/ethernet/pg.c new file mode 100644 index 00000000..67ccfcf5 --- /dev/null +++ b/src/vnet/ethernet/pg.c @@ -0,0 +1,183 @@ +/* + * 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: + */ |