+++ /dev/null
-/*
- * 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.
- */
-/*
- * pg_edit.c: packet generator edits
- *
- * 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>
-
-static void
-pg_edit_set_value_helper (pg_edit_t * e, u64 value, u8 * result)
-{
- int i, j, n_bits_left;
- u8 *v, tmp[8];
-
- v = tmp;
-
- n_bits_left = e->n_bits;
- i = 0;
- j = e->lsb_bit_offset % BITS (v[0]);
-
- if (n_bits_left > 0 && j != 0)
- {
- v[i] = (value & 0xff) << j;
- value >>= BITS (v[0]) - j;
- n_bits_left -= BITS (v[0]) - j;
- i += 1;
- }
-
- while (n_bits_left > 0)
- {
- v[i] = value & 0xff;
- value >>= 8;
- n_bits_left -= 8;
- i += 1;
- }
-
- /* Convert to network byte order. */
- for (j = 0; j < i; j++)
- result[j] = v[i - 1 - j];
-}
-
-void
-pg_edit_set_value (pg_edit_t * e, int hi_or_lo, u64 value)
-{
- pg_edit_alloc_value (e, hi_or_lo);
- pg_edit_set_value_helper (e, value, e->values[hi_or_lo]);
-}
-
-/* Parse an int either %d or 0x%x into network byte order. */
-uword
-unformat_pg_number (unformat_input_t * input, va_list * args)
-{
- u8 *result = va_arg (*args, u8 *);
- pg_edit_t *e = va_arg (*args, pg_edit_t *);
- u64 value;
-
- ASSERT (BITS (value) >= e->n_bits);
-
- if (!unformat (input, "0x%X", sizeof (value), &value)
- && !unformat (input, "%D", sizeof (value), &value))
- return 0;
-
- /* Number given does not fit into bit field. */
- if (e->n_bits < 64 && value >= (u64) 1 << (u64) e->n_bits)
- return 0;
-
- pg_edit_set_value_helper (e, value, result);
- return 1;
-}
-
-uword
-unformat_pg_edit (unformat_input_t * input, va_list * args)
-{
- unformat_function_t *f = va_arg (*args, unformat_function_t *);
- pg_edit_t *e = va_arg (*args, pg_edit_t *);
-
- pg_edit_alloc_value (e, PG_EDIT_LO);
- if (!unformat_user (input, f, e->values[PG_EDIT_LO], e))
- return 0;
-
- pg_edit_alloc_value (e, PG_EDIT_HI);
- if (unformat (input, "-%U", f, e->values[PG_EDIT_HI], e))
- e->type = PG_EDIT_INCREMENT;
- else if (unformat (input, "+%U", f, e->values[PG_EDIT_HI], e))
- e->type = PG_EDIT_RANDOM;
- else
- e->type = PG_EDIT_FIXED;
-
- return 1;
-}
-
-uword
-unformat_pg_payload (unformat_input_t * input, va_list * args)
-{
- pg_stream_t *s = va_arg (*args, pg_stream_t *);
- vlib_main_t *vm = vlib_get_main ();
- pg_edit_t *e;
- u32 i, node_index, len, max_len;
- u8 *v;
-
- v = 0;
-
- if (unformat (input, "incrementing %d", &len))
- {
- vec_resize (v, len);
- for (i = 0; i < len; i++)
- v[i] = i;
- }
- else if (unformat (input, "hex 0x%U", unformat_hex_string, &v))
- ;
-
- else if (unformat (input, "%U", unformat_vlib_node, vm, &node_index))
- {
- pg_node_t *pn = pg_get_node (node_index);
- if (!pn->unformat_edit)
- return 0;
- return unformat (input, "%U", pn->unformat_edit, s);
- }
-
- else
- return 0;
-
- /* Length not including this payload. */
- max_len = pg_edit_group_n_bytes (s, 0);
- if (max_len + vec_len (v) >= s->max_packet_bytes)
- {
- if (s->max_packet_bytes >= max_len)
- _vec_len (v) = s->max_packet_bytes - max_len;
- else
- _vec_len (v) = 0;
- }
-
- e = pg_create_edit_group (s, sizeof (e[0]), vec_len (v), 0);
-
- e->type = PG_EDIT_FIXED;
- e->n_bits = vec_len (v) * BITS (v[0]);
-
- /* Least significant bit is at end of bitstream, since everything is always bigendian. */
- e->lsb_bit_offset = e->n_bits - BITS (v[0]);
-
- e->values[PG_EDIT_LO] = v;
-
- return 1;
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff