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-rw-r--r--src/vnet/srp/pg.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/src/vnet/srp/pg.c b/src/vnet/srp/pg.c
new file mode 100644
index 00000000..54f1a3bb
--- /dev/null
+++ b/src/vnet/srp/pg.c
@@ -0,0 +1,157 @@
+/*
+ * 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 = &ethernet_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;
+}
+