mod/naonet.h

   1 /*
   2  * Naonet communication protocol
   3  *
   4  * Copyright (C) 2010  Daniel Borkmann <daniel@netsniff-ng.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or (at
   9  * your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  14  * for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
  19  */
  20
  21 #ifndef __NAONET_H__
  22 #define __NAONET_H__
  23
  24 #include <linux/types.h>
  25 #include <linux/wait.h>
  26 #include <linux/kfifo.h>
  27
  28 /* Our Nao Ethernet type */
  29 #define ETH_P_NAO  0xACDC
  30
  31 struct naohdr {
  32         __be16                  len;
  33         __be32                  src_id;
  34         __be16                  opts;
  35 };
  36
  37 /* Nao control structure */
  38 struct naonet {
  39         rwlock_t                ctl_lock;
  40         __be32                  src_id;
  41         char                    dev_name[IFNAMSIZ];
  42         size_t                  rx_queue_elems;
  43         spinlock_t              rx_queue_lock;
  44         struct kfifo *          rx_queue;
  45         wait_queue_head_t       rx_queue_wait;
  46         rwlock_t                rx_hook_lock;
  47         void                  (*rx_hook)(struct naohdr *head, char *payload);
  48         atomic_t                rx_frames_bq;
  49         atomic_t                rx_frames_aq;
  50         atomic_t                rx_frames_drop;
  51         atomic_t                tx_frames;
  52 };
  53
  54 #endif /* __NAONET_H__ */