staging/llist.h

   1 /*
   2  * Mausezahn - A fast versatile traffic generator
   3  * Copyright (C) 2010 Herbert Haas
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License version 2 as published by the
   7  * Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
  12  * details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, see http://www.gnu.org/licenses/gpl-2.0.html
  16  *
  17 */
  18
  19
  20
  21 #ifndef MZ_LINKED_LIST
  22 #define MZ_LINKED_LIST
  23
  24 #define MAX_PACKET_SEQUENCE_LEN 20  // how many packets can be defined in a sequence at maximum
  25
  26 // A packet sequence -- this is the list data (each list element corresponds to one sequence)
  27 struct pseq {
  28         struct mops *packet[MAX_PACKET_SEQUENCE_LEN];  // pointer to the packets
  29         struct timespec gap[MAX_PACKET_SEQUENCE_LEN];  // optional delay between different packets
  30         int count; // total number of current members (=packets)
  31 };
  32
  33
  34 // --------------- Mausezahn Multipurpose Linked List: -------------------
  35
  36 #define MZ_LL_NAME_LEN 64
  37
  38 // one list element
  39 struct mz_ll {
  40         struct mz_ll *prev;
  41         struct mz_ll *next;
  42         struct mz_ll *head; // always points to head element
  43         int refcount; // head element: total number of list items! (Otherwise can be used as refcount.)
  44         char name[MZ_LL_NAME_LEN];
  45         pthread_t  sequence_thread;
  46         int state; // 0 = inactive, 1 = active
  47         int index; // monotonically increasing;
  48         int index_last; //head always stores the last value!
  49         void *data; // points to your data
  50 };
  51
  52 struct mz_ll *packet_sequences;
  53 struct mz_ll *cli_seq; // currently edited packet sequence used by CLI
  54
  55 // prototypes
  56 struct mz_ll * mz_ll_create_new_element(struct mz_ll *list);
  57 int  mz_ll_delete_element (struct mz_ll *cur);
  58 int mz_ll_delete_list(struct mz_ll *list);
  59 struct mz_ll * mz_ll_search_name (struct mz_ll *list, char *str);
  60 void _mz_ll_set_default (struct mz_ll *cur);
  61 int mz_ll_dump_all(struct mz_ll *list);
  62 int mops_tx_sequence (struct mz_ll *seq);
  63
  64 // convenience functions using the above in a more intelligent way
  65 int mops_delete_sequence(char *name);
  66 struct mz_ll * mops_create_sequence (char *name);
  67 int mops_dump_sequence (char* str);
  68 int mops_add_packet_to_sequence (struct mz_ll *seq, struct mops *mp);
  69 int mops_add_delay_to_sequence (struct mz_ll *seq, struct timespec *t);
  70 int mops_delete_packet_from_pseq (struct mz_ll *seq, int index);
  71 int mops_delete_all_packets_from_pseq (struct mz_ll *seq);
  72 int stop_sequence (char *name);
  73 int stop_all_sequences ();
  74 #endif
  75