FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/net/if_cdcereg.h

     /*-
      * SPDX-License-Identifier: BSD-4-Clause
      *
      * Copyright (c) 2003-2005 Craig Boston
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Bill Paul.
     * 4. Neither the name of the author nor the names of any co-contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR
     * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _USB_IF_CDCEREG_H_
    #define _USB_IF_CDCEREG_H_
    
    #define CDCE_BIT(x) (1 << (x))
    
    #define CDCE_FRAMES_MAX 8               /* units */
    #define CDCE_IND_SIZE_MAX 32            /* bytes */
    
    #define CDCE_NCM_TX_MINLEN 512          /* bytes, must be power of two */
    #define CDCE_NCM_TX_MAXLEN (16384 + 4)  /* bytes, must be short terminated */
    #define CDCE_NCM_TX_FRAMES_MAX 8        /* units */
    
    #define CDCE_NCM_RX_MAXLEN (1UL << 14)  /* bytes */
    #define CDCE_NCM_RX_FRAMES_MAX 1        /* units */
    
    #define CDCE_NCM_SUBFRAMES_MAX 32       /* units */
    
    #define CDCE_NCM_ALIGN(rem,off,mod) \
        ((uint32_t)(((uint32_t)(rem)) - \
        ((uint32_t)((-(uint32_t)(off)) & (-(uint32_t)(mod))))))
    
    #ifndef CDCE_HAVE_NCM
    #define CDCE_HAVE_NCM 1
    #endif
    
    enum {
            CDCE_BULK_RX,
            CDCE_BULK_TX,
            CDCE_INTR_RX,
            CDCE_INTR_TX,
            CDCE_N_TRANSFER,
    };
    
    struct cdce_ncm {
            struct usb_ncm16_hdr hdr;
            struct usb_ncm16_dpt dpt;
            struct usb_ncm16_dp dp[CDCE_NCM_SUBFRAMES_MAX];
            uint32_t rx_max;
            uint32_t tx_max;
            uint16_t tx_remainder;
            uint16_t tx_modulus;
            uint16_t tx_struct_align;
            uint16_t tx_seq;
            uint16_t tx_nframe;
    };
    
    struct cdce_softc {
            struct usb_ether        sc_ue;
            struct mtx              sc_mtx;
    #if CDCE_HAVE_NCM
            struct cdce_ncm         sc_ncm;
    #endif
            struct usb_xfer *sc_xfer[CDCE_N_TRANSFER];
            struct mbuf             *sc_rx_buf[CDCE_FRAMES_MAX];
            struct mbuf             *sc_tx_buf[CDCE_FRAMES_MAX];
    
            struct ifmedia          sc_media;
    
            int                     sc_flags;
    #define CDCE_FLAG_ZAURUS        0x0001
    #define CDCE_FLAG_NO_UNION      0x0002
    #define CDCE_FLAG_RX_DATA       0x0010
    #define CDCE_FLAG_VLAN          0x0020
   
           uint8_t sc_eaddr_str_index;
           uint8_t sc_ifaces_index[2];
           uint8_t sc_notify_state;
   #define CDCE_NOTIFY_NETWORK_CONNECTION  0
   #define CDCE_NOTIFY_SPEED_CHANGE        1
   #define CDCE_NOTIFY_DONE                2
   };
   
   /*
    * Taken from USB CDC Subclass Specification for Ethernet Devices v1.2,
    * section 6.2.4.
    */
   
   #define CDC_SET_ETHERNET_PACKET_FILTER  0x43    /* Command code. */
   
   #define CDC_PACKET_TYPE_PROMISC         CDCE_BIT(0)
   #define CDC_PACKET_TYPE_ALL_MULTICAST   CDCE_BIT(1)     /* Allmulti. */
   #define CDC_PACKET_TYPE_DIRECTED        CDCE_BIT(2)     /* Filter unicast by mac. */
   #define CDC_PACKET_TYPE_BROADCAST       CDCE_BIT(3)
   #define CDC_PACKET_TYPE_MULTICAST       CDCE_BIT(4)     /* Multicast filtering, not supported. */
   
   #define CDCE_LOCK(_sc)                  mtx_lock(&(_sc)->sc_mtx)
   #define CDCE_UNLOCK(_sc)                mtx_unlock(&(_sc)->sc_mtx)
   #define CDCE_LOCK_ASSERT(_sc, t)        mtx_assert(&(_sc)->sc_mtx, t)
   #endif                                  /* _USB_IF_CDCEREG_H_ */

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