minix/net/lwip/driver.h

   1 #ifndef __LWIP_DRIVER_H_
   2 #define __LWIP_DRIVER_H_
   3
   4 #include <minix/endpoint.h>
   5 #include <minix/ds.h>
   6
   7 #include <lwip/pbuf.h>
   8
   9 #define NIC_NAME_LEN    6
  10 #define DRV_NAME_LEN    DS_MAX_KEYLEN
  11
  12 #define TX_IOVEC_NUM    16 /* something the drivers assume */
  13
  14 struct packet_q {
  15         struct packet_q *       next;
  16         unsigned int            buf_len;
  17         char                    buf[];
  18 };
  19
  20 #define DRV_IDLE        0
  21 #define DRV_SENDING     1
  22 #define DRV_RECEIVING   2
  23
  24 struct nic {
  25         unsigned int            flags;
  26         char                    name[NIC_NAME_LEN];
  27         char                    drv_name[DRV_NAME_LEN];
  28         endpoint_t              drv_ep;
  29         int                     is_default;
  30         int                     state;
  31         cp_grant_id_t           rx_iogrant;
  32         iovec_s_t               rx_iovec[1];
  33         struct pbuf *           rx_pbuf;
  34         cp_grant_id_t           tx_iogrant;
  35         iovec_s_t               tx_iovec[TX_IOVEC_NUM];
  36         struct packet_q *       tx_head;
  37         struct packet_q *       tx_tail;
  38         void *                  tx_buffer;
  39         struct netif            netif;
  40         unsigned int            max_pkt_sz;
  41         unsigned int            min_pkt_sz;
  42         struct socket           * raw_socket;
  43 };
  44
  45 int driver_tx_enqueue(struct nic * nic, struct pbuf * pbuf);
  46 void driver_tx_dequeue(struct nic * nic);
  47 struct packet_q * driver_tx_head(struct nic * nic);
  48
  49 /*
  50  * Transmit the next packet in the TX queue of this device. Returns 1 if
  51  * success, 0 otherwise.
  52  */
  53 int driver_tx(struct nic * nic);
  54 int raw_socket_input(struct pbuf * pbuf, struct nic * nic);
  55
  56 #endif /* __LWIP_DRIVER_H_ */