5bdfd3fd36
Hyper-V's NIC SR-IOV implementation needs a Hyper-V synthetic NIC and a VF NIC to work together (both NICs have the same MAC address), mainly to support seamless live migration. When the VF device becomes UP (or DOWN), the synthetic NIC driver needs to switch the data path from the synthetic NIC to the VF (or the opposite). Note: multicast/broadcast packets are still received through the synthetic NIC and we need to inject the packets through the VF interface (if the VF is UP), even if the synthetic NIC is DOWN (so we need to force the rxfilter to be NDIS_PACKET_TYPE_PROMISCUOUS, when the VF is UP). Reviewed by: sephe Approved by: sephe (mentor) MFC after: 2 weeks Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D8964
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/*-
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* Copyright (c) 2009-2012,2016 Microsoft Corp.
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* Copyright (c) 2010-2012 Citrix Inc.
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* Copyright (c) 2012 NetApp Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _HN_NVS_H_
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#define _HN_NVS_H_
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struct hn_nvs_sendctx;
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struct vmbus_channel;
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struct hn_softc;
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typedef void (*hn_nvs_sent_t)
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(struct hn_nvs_sendctx *, struct hn_softc *,
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struct vmbus_channel *, const void *, int);
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struct hn_nvs_sendctx {
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hn_nvs_sent_t hn_cb;
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void *hn_cbarg;
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};
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#define HN_NVS_SENDCTX_INITIALIZER(cb, cbarg) \
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{ \
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.hn_cb = cb, \
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.hn_cbarg = cbarg \
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}
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static __inline void
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hn_nvs_sendctx_init(struct hn_nvs_sendctx *sndc, hn_nvs_sent_t cb, void *cbarg)
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{
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sndc->hn_cb = cb;
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sndc->hn_cbarg = cbarg;
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}
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static __inline int
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hn_nvs_send(struct vmbus_channel *chan, uint16_t flags,
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void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc)
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{
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return (vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_INBAND, flags,
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nvs_msg, nvs_msglen, (uint64_t)(uintptr_t)sndc));
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}
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static __inline int
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hn_nvs_send_sglist(struct vmbus_channel *chan, struct vmbus_gpa sg[], int sglen,
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void *nvs_msg, int nvs_msglen, struct hn_nvs_sendctx *sndc)
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{
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return (vmbus_chan_send_sglist(chan, sg, sglen, nvs_msg, nvs_msglen,
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(uint64_t)(uintptr_t)sndc));
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}
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static __inline int
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hn_nvs_send_rndis_sglist(struct vmbus_channel *chan, uint32_t rndis_mtype,
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struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa, int gpa_cnt)
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{
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struct hn_nvs_rndis rndis;
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rndis.nvs_type = HN_NVS_TYPE_RNDIS;
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rndis.nvs_rndis_mtype = rndis_mtype;
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rndis.nvs_chim_idx = HN_NVS_CHIM_IDX_INVALID;
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rndis.nvs_chim_sz = 0;
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return (hn_nvs_send_sglist(chan, gpa, gpa_cnt,
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&rndis, sizeof(rndis), sndc));
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}
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int hn_nvs_attach(struct hn_softc *sc, int mtu);
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void hn_nvs_detach(struct hn_softc *sc);
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int hn_nvs_alloc_subchans(struct hn_softc *sc, int *nsubch);
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void hn_nvs_sent_xact(struct hn_nvs_sendctx *sndc,
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struct hn_softc *sc, struct vmbus_channel *chan,
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const void *data, int dlen);
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int hn_nvs_send_rndis_ctrl(struct vmbus_channel *chan,
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struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa,
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int gpa_cnt);
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void hn_nvs_set_datapath(struct hn_softc *sc, uint32_t path);
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extern struct hn_nvs_sendctx hn_nvs_sendctx_none;
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#endif /* !_HN_NVS_H_ */
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