Line data    Source code

       1             : /*
       2             :  * hdlc_pg.c: packet generator gre interface
       3             :  *
       4             :  * Copyright (c) 2012 Cisco and/or its affiliates.
       5             :  * Licensed under the Apache License, Version 2.0 (the "License");
       6             :  * you may not use this file except in compliance with the License.
       7             :  * You may obtain a copy of the License at:
       8             :  *
       9             :  *     http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  * Unless required by applicable law or agreed to in writing, software
      12             :  * distributed under the License is distributed on an "AS IS" BASIS,
      13             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  * See the License for the specific language governing permissions and
      15             :  * limitations under the License.
      16             :  */
      17             : 
      18             : #include <vlib/vlib.h>
      19             : #include <vnet/pg/pg.h>
      20             : #include <gre/gre.h>
      21             : 
      22             : typedef struct
      23             : {
      24             :   pg_edit_t flags_and_version;
      25             :   pg_edit_t protocol;
      26             : } pg_gre_header_t;
      27             : 
      28             : static inline void
      29           0 : pg_gre_header_init (pg_gre_header_t *e)
      30             : {
      31           0 :   pg_edit_init (&e->flags_and_version, gre_header_t, flags_and_version);
      32           0 :   pg_edit_init (&e->protocol, gre_header_t, protocol);
      33           0 : }
      34             : 
      35             : uword
      36           0 : unformat_pg_gre_header (unformat_input_t *input, va_list *args)
      37             : {
      38           0 :   pg_stream_t *s = va_arg (*args, pg_stream_t *);
      39             :   pg_gre_header_t *h;
      40             :   u32 group_index, error;
      41             : 
      42           0 :   h = pg_create_edit_group (s, sizeof (h[0]), sizeof (gre_header_t),
      43             :                             &group_index);
      44           0 :   pg_gre_header_init (h);
      45             : 
      46           0 :   pg_edit_set_fixed (&h->flags_and_version, 0);
      47             : 
      48           0 :   error = 1;
      49           0 :   if (!unformat (input, "%U", unformat_pg_edit,
      50             :                  unformat_gre_protocol_net_byte_order, &h->protocol))
      51           0 :     goto done;
      52             : 
      53             :   {
      54           0 :     gre_main_t *pm = &gre_main;
      55           0 :     gre_protocol_info_t *pi = 0;
      56           0 :     pg_node_t *pg_node = 0;
      57             : 
      58           0 :     if (h->protocol.type == PG_EDIT_FIXED)
      59             :       {
      60           0 :         u16 t = *(u16 *) h->protocol.values[PG_EDIT_LO];
      61           0 :         pi = gre_get_protocol_info (pm, clib_net_to_host_u16 (t));
      62           0 :         if (pi && pi->node_index != ~0)
      63           0 :           pg_node = pg_get_node (pi->node_index);
      64             :       }
      65             : 
      66           0 :     if (pg_node && pg_node->unformat_edit &&
      67           0 :         unformat_user (input, pg_node->unformat_edit, s))
      68             :       ;
      69             :   }
      70             : 
      71           0 :   error = 0;
      72           0 : done:
      73           0 :   if (error)
      74           0 :     pg_free_edit_group (s);
      75           0 :   return error == 0;
      76             : }
      77             : 
      78             : /*
      79             :  * fd.io coding-style-patch-verification: ON
      80             :  *
      81             :  * Local Variables:
      82             :  * eval: (c-set-style "gnu")
      83             :  * End:
      84             :  */