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-rw-r--r--src/vnet/ethernet/pg.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/src/vnet/ethernet/pg.c b/src/vnet/ethernet/pg.c
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+++ b/src/vnet/ethernet/pg.c
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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 = &ethernet_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:
+ */