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 29 #ifndef _HN_NVS_H_ 30 #define _HN_NVS_H_ 31 32 struct hn_nvs_sendctx; 33 struct vmbus_channel; 34 struct hn_softc; 35 36 typedef void (*hn_nvs_sent_t) 37 (struct hn_nvs_sendctx *, struct hn_softc *, 38 struct vmbus_channel *, const void *, int); 39 40 struct hn_nvs_sendctx { 41 hn_nvs_sent_t hn_cb; 42 void *hn_cbarg; 43 }; 44 45 #define HN_NVS_SENDCTX_INITIALIZER(cb, cbarg) \ 46 { \ 47 .hn_cb = cb, \ 48 .hn_cbarg = cbarg \ 49 } 50 51 static __inline void 52 hn_nvs_sendctx_init(struct hn_nvs_sendctx *sndc, hn_nvs_sent_t cb, void *cbarg) 53 { 54 55 sndc->hn_cb = cb; 56 sndc->hn_cbarg = cbarg; 57 } 58 59 static __inline int 60 hn_nvs_send(struct vmbus_channel *chan, uint16_t flags, 61 void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc) 62 { 63 64 return (vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_INBAND, flags, 65 nvs_msg, nvs_msglen, (uint64_t)(uintptr_t)sndc)); 66 } 67 68 static __inline int 69 hn_nvs_send_sglist(struct vmbus_channel *chan, struct vmbus_gpa sg[], int sglen, 70 void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc) 71 { 72 73 return (vmbus_chan_send_sglist(chan, sg, sglen, nvs_msg, nvs_msglen, 74 (uint64_t)(uintptr_t)sndc)); 75 } 76 77 static __inline int 78 hn_nvs_send_rndis_sglist(struct vmbus_channel *chan, uint32_t rndis_mtype, 79 struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa, int gpa_cnt) 80 { 81 struct hn_nvs_rndis rndis; 82 83 rndis.nvs_type = HN_NVS_TYPE_RNDIS; 84 rndis.nvs_rndis_mtype = rndis_mtype; 85 rndis.nvs_chim_idx = HN_NVS_CHIM_IDX_INVALID; 86 rndis.nvs_chim_sz = 0; 87 88 return (hn_nvs_send_sglist(chan, gpa, gpa_cnt, 89 &rndis, sizeof(rndis), sndc)); 90 } 91 92 int hn_nvs_attach(struct hn_softc *sc, int mtu); 93 void hn_nvs_detach(struct hn_softc *sc); 94 int hn_nvs_alloc_subchans(struct hn_softc *sc, int *nsubch); 95 void hn_nvs_sent_xact(struct hn_nvs_sendctx *sndc, 96 struct hn_softc *sc, struct vmbus_channel *chan, 97 const void *data, int dlen); 98 int hn_nvs_send_rndis_ctrl(struct vmbus_channel *chan, 99 struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa, 100 int gpa_cnt); 101 void hn_nvs_set_datapath(struct hn_softc *sc, uint32_t path); 102 103 extern struct hn_nvs_sendctx hn_nvs_sendctx_none; 104 105 #endif /* !_HN_NVS_H_ */ 106