hn_nvs.h

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    1 /*-
    2  * Copyright (c) 2009-2012,2016-2017 Microsoft Corp.
    3  * Copyright (c) 2010-2012 Citrix Inc.
    4  * Copyright (c) 2012 NetApp Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _HN_NVS_H_
   32 #define _HN_NVS_H_
   33 
   34 struct hn_nvs_sendctx;
   35 struct vmbus_channel;
   36 struct hn_softc;
   37 
   38 typedef void            (*hn_nvs_sent_t)
   39                         (struct hn_nvs_sendctx *, struct hn_softc *,
   40                          struct vmbus_channel *, const void *, int);
   41 
   42 struct hn_nvs_sendctx {
   43         hn_nvs_sent_t   hn_cb;
   44         void            *hn_cbarg;
   45 };
   46 
   47 #define HN_NVS_SENDCTX_INITIALIZER(cb, cbarg)   \
   48 {                                               \
   49         .hn_cb          = cb,                   \
   50         .hn_cbarg       = cbarg                 \
   51 }
   52 
   53 static __inline void
   54 hn_nvs_sendctx_init(struct hn_nvs_sendctx *sndc, hn_nvs_sent_t cb, void *cbarg)
   55 {
   56 
   57         sndc->hn_cb = cb;
   58         sndc->hn_cbarg = cbarg;
   59 }
   60 
   61 static __inline int
   62 hn_nvs_send(struct vmbus_channel *chan, uint16_t flags,
   63     void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc)
   64 {
   65 
   66         return (vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_INBAND, flags,
   67             nvs_msg, nvs_msglen, (uint64_t)(uintptr_t)sndc));
   68 }
   69 
   70 static __inline int
   71 hn_nvs_send_sglist(struct vmbus_channel *chan, struct vmbus_gpa sg[], int sglen,
   72     void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc)
   73 {
   74 
   75         return (vmbus_chan_send_sglist(chan, sg, sglen, nvs_msg, nvs_msglen,
   76             (uint64_t)(uintptr_t)sndc));
   77 }
   78 
   79 static __inline int
   80 hn_nvs_send_rndis_sglist(struct vmbus_channel *chan, uint32_t rndis_mtype,
   81     struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa, int gpa_cnt)
   82 {
   83         struct hn_nvs_rndis rndis;
   84 
   85         rndis.nvs_type = HN_NVS_TYPE_RNDIS;
   86         rndis.nvs_rndis_mtype = rndis_mtype;
   87         rndis.nvs_chim_idx = HN_NVS_CHIM_IDX_INVALID;
   88         rndis.nvs_chim_sz = 0;
   89 
   90         return (hn_nvs_send_sglist(chan, gpa, gpa_cnt,
   91             &rndis, sizeof(rndis), sndc));
   92 }
   93 
   94 int             hn_nvs_attach(struct hn_softc *sc, int mtu);
   95 void            hn_nvs_detach(struct hn_softc *sc);
   96 int             hn_nvs_alloc_subchans(struct hn_softc *sc, int *nsubch);
   97 void            hn_nvs_sent_xact(struct hn_nvs_sendctx *sndc,
   98                     struct hn_softc *sc, struct vmbus_channel *chan,
   99                     const void *data, int dlen);
  100 int             hn_nvs_send_rndis_ctrl(struct vmbus_channel *chan,
  101                     struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa,
  102                     int gpa_cnt);
  103 void            hn_nvs_set_datapath(struct hn_softc *sc, uint32_t path);
  104 
  105 extern struct hn_nvs_sendctx    hn_nvs_sendctx_none;
  106 
  107 #endif  /* !_HN_NVS_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/hyperv/netvsc/hn_nvs.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/hyperv/netvsc/hn_nvs.h