1 /*- 2 * Copyright (c) 2009-2012,2016 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); 103 104 extern struct hn_nvs_sendctx hn_nvs_sendctx_none; 105 106 #endif /* !_HN_NVS_H_ */ 107