kernel/include/net/eth.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _ETH_H
  20 #define _ETH_H
  21
  22 #include <net/net.h>
  23
  24 #define PROT_TYPE_IPV4 0x0800
  25 #define PROT_TYPE_ARP  0x0806
  26
  27 #define ETHERNET_HEADER_SIZE (6+6+2)
  28 #define ETHERNET_MAX_SIZE (ETHERNET_HEADER_SIZE+1500)
  29 #define ETHERNET_MIN_SIZE (ETHERNET_HEADER_SIZE+46)
  30
  31 typedef struct netdev_buffer_queue_context {
  32         struct netdev_buffer_queue_context *next, *prev;
  33
  34         unsigned short len;
  35         char *buf;
  36 } netdev_buffer_queue_t;
  37
  38
  39 typedef struct netdev_t {
  40         mac_addr_t dev_addr;
  41         unsigned long base_addr;
  42         void *priv;
  43         unsigned char irq;
  44         char *name;
  45
  46         /* main functions, what works with ethernet directly */
  47         unsigned (*read) (char *, unsigned);
  48         unsigned (*write) (char *, unsigned);
  49
  50         /* some info about traffic */
  51         unsigned long info_rx;
  52         unsigned long info_tx;
  53
  54         /* actual queue count */
  55         int queue_rx_cnt;
  56         int queue_tx_cnt;
  57
  58         /* queue for received/transfered data */
  59         netdev_buffer_queue_t queue_rx_list;
  60         netdev_buffer_queue_t queue_tx_list;
  61 } netdev_t;
  62
  63
  64 extern netdev_t *netdev_create (mac_addr_t addr_mac, unsigned (*read) (char *, unsigned), unsigned (*write) (char *, unsigned), unsigned addr_io);
  65 extern unsigned netdev_rx_add_queue (struct netdev_t *dev, char *buffer, unsigned len);
  66 extern netdev_buffer_queue_t *netdev_rx_queue (struct netdev_t *dev);
  67 extern unsigned netdev_rx_queue_flush (struct netdev_t *dev, netdev_buffer_queue_t *queue);
  68 extern int netdev_rx (struct netdev_t *dev, char *buf, unsigned len);
  69
  70 #endif