99e315276a
For multi-channel devices, once the primary channel is closed, a set of 'rescind' messages for sub-channels will be delivered by Hypervisor. Sub-channel MUST be freed according to these 'rescind' messages; directly re-openning sub-channels in the same fashion as the primary channel's re-opening does NOT work at all. After the primary channel is re-opened, requested # of sub- channels will be delivered though 'channel offer' messages, and this set of newly offered channels can be opened along side with the primary channel. This unbreaks the MTU setting for hn(4), which requires re- openning all existsing channels upon MTU change. MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D6978
217 lines
6.0 KiB
C
217 lines
6.0 KiB
C
/*-
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* Copyright (c) 2016 Microsoft Corp.
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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 _VMBUS_REG_H_
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#define _VMBUS_REG_H_
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#include <sys/param.h>
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#include <dev/hyperv/vmbus/hyperv_reg.h>
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/*
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* Hyper-V SynIC message format.
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*/
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#define VMBUS_MSG_DSIZE_MAX 240
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#define VMBUS_MSG_SIZE 256
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struct vmbus_message {
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uint32_t msg_type; /* HYPERV_MSGTYPE_ */
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uint8_t msg_dsize; /* data size */
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uint8_t msg_flags; /* VMBUS_MSGFLAG_ */
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uint16_t msg_rsvd;
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uint64_t msg_id;
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uint8_t msg_data[VMBUS_MSG_DSIZE_MAX];
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} __packed;
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CTASSERT(sizeof(struct vmbus_message) == VMBUS_MSG_SIZE);
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#define VMBUS_MSGFLAG_PENDING 0x01
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/*
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* Hyper-V SynIC event flags
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*/
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#ifdef __LP64__
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#define VMBUS_EVTFLAGS_MAX 32
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#define VMBUS_EVTFLAG_SHIFT 6
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#else
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#define VMBUS_EVTFLAGS_MAX 64
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#define VMBUS_EVTFLAG_SHIFT 5
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#endif
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#define VMBUS_EVTFLAG_LEN (1 << VMBUS_EVTFLAG_SHIFT)
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#define VMBUS_EVTFLAG_MASK (VMBUS_EVTFLAG_LEN - 1)
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#define VMBUS_EVTFLAGS_SIZE 256
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struct vmbus_evtflags {
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u_long evt_flags[VMBUS_EVTFLAGS_MAX];
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} __packed;
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CTASSERT(sizeof(struct vmbus_evtflags) == VMBUS_EVTFLAGS_SIZE);
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/*
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* Channel
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*/
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#define VMBUS_CHAN_MAX_COMPAT 256
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#define VMBUS_CHAN_MAX (VMBUS_EVTFLAG_LEN * VMBUS_EVTFLAGS_MAX)
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/*
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* GPA range.
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*/
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struct vmbus_gpa_range {
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uint32_t gpa_len;
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uint32_t gpa_ofs;
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uint64_t gpa_page[];
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} __packed;
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/*
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* Channel messages
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* - Embedded in vmbus_message.msg_data, e.g. response.
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* - Embedded in hypercall_postmsg_in.hc_data, e.g. request.
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*/
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#define VMBUS_CHANMSG_TYPE_CHREQUEST 3 /* REQ */
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#define VMBUS_CHANMSG_TYPE_CHOPEN 5 /* REQ */
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#define VMBUS_CHANMSG_TYPE_CHOPEN_RESP 6 /* RESP */
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#define VMBUS_CHANMSG_TYPE_CHCLOSE 7 /* REQ */
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#define VMBUS_CHANMSG_TYPE_GPADL_CONN 8 /* REQ */
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#define VMBUS_CHANMSG_TYPE_GPADL_SUBCONN 9 /* REQ */
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#define VMBUS_CHANMSG_TYPE_GPADL_CONNRESP 10 /* RESP */
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#define VMBUS_CHANMSG_TYPE_GPADL_DISCONN 11 /* REQ */
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#define VMBUS_CHANMSG_TYPE_GPADL_DISCONNRESP 12 /* RESP */
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#define VMBUS_CHANMSG_TYPE_CHFREE 13 /* REQ */
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#define VMBUS_CHANMSG_TYPE_CONNECT 14 /* REQ */
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#define VMBUS_CHANMSG_TYPE_CONNECT_RESP 15 /* RESP */
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#define VMBUS_CHANMSG_TYPE_DISCONNECT 16 /* REQ */
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struct vmbus_chanmsg_hdr {
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uint32_t chm_type; /* VMBUS_CHANMSG_TYPE_ */
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uint32_t chm_rsvd;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CONNECT */
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struct vmbus_chanmsg_connect {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_ver;
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uint32_t chm_rsvd;
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uint64_t chm_evtflags;
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uint64_t chm_mnf1;
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uint64_t chm_mnf2;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CONNECT_RESP */
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struct vmbus_chanmsg_connect_resp {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint8_t chm_done;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CHREQUEST */
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struct vmbus_chanmsg_chrequest {
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struct vmbus_chanmsg_hdr chm_hdr;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_DISCONNECT */
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struct vmbus_chanmsg_disconnect {
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struct vmbus_chanmsg_hdr chm_hdr;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CHOPEN */
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struct vmbus_chanmsg_chopen {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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uint32_t chm_openid;
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uint32_t chm_gpadl;
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uint32_t chm_vcpuid;
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uint32_t chm_rxbr_pgofs;
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#define VMBUS_CHANMSG_CHOPEN_UDATA_SIZE 120
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uint8_t chm_udata[VMBUS_CHANMSG_CHOPEN_UDATA_SIZE];
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CHOPEN_RESP */
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struct vmbus_chanmsg_chopen_resp {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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uint32_t chm_openid;
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uint32_t chm_status;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_GPADL_CONN */
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struct vmbus_chanmsg_gpadl_conn {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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uint32_t chm_gpadl;
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uint16_t chm_range_len;
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uint16_t chm_range_cnt;
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struct vmbus_gpa_range chm_range;
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} __packed;
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#define VMBUS_CHANMSG_GPADL_CONN_PGMAX 26
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CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_conn,
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chm_range.gpa_page[VMBUS_CHANMSG_GPADL_CONN_PGMAX]) <=
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HYPERCALL_POSTMSGIN_DSIZE_MAX);
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/* VMBUS_CHANMSG_TYPE_GPADL_SUBCONN */
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struct vmbus_chanmsg_gpadl_subconn {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_msgno;
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uint32_t chm_gpadl;
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uint64_t chm_gpa_page[];
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} __packed;
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#define VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX 28
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CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_subconn,
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chm_gpa_page[VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX]) <=
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HYPERCALL_POSTMSGIN_DSIZE_MAX);
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/* VMBUS_CHANMSG_TYPE_GPADL_CONNRESP */
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struct vmbus_chanmsg_gpadl_connresp {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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uint32_t chm_gpadl;
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uint32_t chm_status;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CHCLOSE */
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struct vmbus_chanmsg_chclose {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_GPADL_DISCONN */
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struct vmbus_chanmsg_gpadl_disconn {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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uint32_t chm_gpadl;
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} __packed;
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/* VMBUS_CHANMSG_TYPE_CHFREE */
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struct vmbus_chanmsg_chfree {
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struct vmbus_chanmsg_hdr chm_hdr;
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uint32_t chm_chanid;
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} __packed;
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#endif /* !_VMBUS_REG_H_ */
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