Index: head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c (revision 302807) +++ head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c (revision 302808) @@ -1,575 +1,576 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include typedef void (*vmbus_chanmsg_proc_t) (struct vmbus_softc *, const struct vmbus_message *); -static struct hv_vmbus_channel *hv_vmbus_allocate_channel(struct vmbus_softc *); static void vmbus_channel_on_offer_internal(struct vmbus_softc *, const struct vmbus_chanmsg_choffer *); static void vmbus_chan_detach_task(void *, int); static void vmbus_channel_on_offer(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_offers_delivered(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_chan_msgproc_chrescind(struct vmbus_softc *, const struct vmbus_message *); /* * Vmbus channel message processing. */ #define VMBUS_CHANMSG_PROC(name, func) \ [VMBUS_CHANMSG_TYPE_##name] = func #define VMBUS_CHANMSG_PROC_WAKEUP(name) \ VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup) static const vmbus_chanmsg_proc_t vmbus_chanmsg_process[VMBUS_CHANMSG_TYPE_MAX] = { VMBUS_CHANMSG_PROC(CHOFFER, vmbus_channel_on_offer), VMBUS_CHANMSG_PROC(CHRESCIND, vmbus_chan_msgproc_chrescind), VMBUS_CHANMSG_PROC(CHOFFER_DONE,vmbus_channel_on_offers_delivered), VMBUS_CHANMSG_PROC_WAKEUP(CHOPEN_RESP), VMBUS_CHANMSG_PROC_WAKEUP(GPADL_CONNRESP), VMBUS_CHANMSG_PROC_WAKEUP(GPADL_DISCONNRESP), VMBUS_CHANMSG_PROC_WAKEUP(CONNECT_RESP) }; #undef VMBUS_CHANMSG_PROC_WAKEUP #undef VMBUS_CHANMSG_PROC -/** - * @brief Allocate and initialize a vmbus channel object - */ static struct hv_vmbus_channel * -hv_vmbus_allocate_channel(struct vmbus_softc *sc) +vmbus_chan_alloc(struct vmbus_softc *sc) { - struct hv_vmbus_channel *channel; + struct hv_vmbus_channel *chan; - channel = malloc(sizeof(*channel), M_DEVBUF, M_WAITOK | M_ZERO); - channel->vmbus_sc = sc; + chan = malloc(sizeof(*chan), M_DEVBUF, M_WAITOK | M_ZERO); - mtx_init(&channel->sc_lock, "vmbus multi channel", NULL, MTX_DEF); - TAILQ_INIT(&channel->sc_list_anchor); - TASK_INIT(&channel->ch_detach_task, 0, vmbus_chan_detach_task, channel); + chan->ch_monprm = hyperv_dmamem_alloc(bus_get_dma_tag(sc->vmbus_dev), + HYPERCALL_PARAM_ALIGN, 0, sizeof(struct hyperv_mon_param), + &chan->ch_monprm_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); + if (chan->ch_monprm == NULL) { + device_printf(sc->vmbus_dev, "monprm alloc failed\n"); + free(chan, M_DEVBUF); + return NULL; + } - return (channel); + chan->vmbus_sc = sc; + mtx_init(&chan->sc_lock, "vmbus multi channel", NULL, MTX_DEF); + TAILQ_INIT(&chan->sc_list_anchor); + TASK_INIT(&chan->ch_detach_task, 0, vmbus_chan_detach_task, chan); + + return chan; } -/** - * @brief Release the resources used by the vmbus channel object - */ -void -hv_vmbus_free_vmbus_channel(hv_vmbus_channel* channel) +static void +vmbus_chan_free(struct hv_vmbus_channel *chan) { - mtx_destroy(&channel->sc_lock); - free(channel, M_DEVBUF); + /* TODO: assert sub-channel list is empty */ + /* TODO: asset no longer on the primary channel's sub-channel list */ + /* TODO: asset no longer on the vmbus channel list */ + hyperv_dmamem_free(&chan->ch_monprm_dma, chan->ch_monprm); + mtx_destroy(&chan->sc_lock); + free(chan, M_DEVBUF); } /** * @brief Process the offer by creating a channel/device * associated with this offer */ static void vmbus_channel_process_offer(hv_vmbus_channel *new_channel) { struct vmbus_softc *sc = new_channel->vmbus_sc; hv_vmbus_channel* channel; /* * Make sure this is a new offer */ mtx_lock(&sc->vmbus_chlist_lock); if (new_channel->ch_id == 0) { /* * XXX channel0 will not be processed; skip it. */ printf("VMBUS: got channel0 offer\n"); } else { sc->vmbus_chmap[new_channel->ch_id] = new_channel; } TAILQ_FOREACH(channel, &sc->vmbus_chlist, ch_link) { if (memcmp(&channel->ch_guid_type, &new_channel->ch_guid_type, sizeof(struct hyperv_guid)) == 0 && memcmp(&channel->ch_guid_inst, &new_channel->ch_guid_inst, sizeof(struct hyperv_guid)) == 0) break; } if (channel == NULL) { /* Install the new primary channel */ TAILQ_INSERT_TAIL(&sc->vmbus_chlist, new_channel, ch_link); } mtx_unlock(&sc->vmbus_chlist_lock); if (bootverbose) { char logstr[64]; logstr[0] = '\0'; if (channel != NULL) { snprintf(logstr, sizeof(logstr), ", primary chan%u", channel->ch_id); } device_printf(sc->vmbus_dev, "chan%u subchanid%u offer%s\n", new_channel->ch_id, new_channel->ch_subidx, logstr); } if (channel != NULL) { /* * Check if this is a sub channel. */ if (new_channel->ch_subidx != 0) { /* * It is a sub channel offer, process it. */ new_channel->primary_channel = channel; new_channel->ch_dev = channel->ch_dev; mtx_lock(&channel->sc_lock); TAILQ_INSERT_TAIL(&channel->sc_list_anchor, new_channel, sc_list_entry); mtx_unlock(&channel->sc_lock); /* * Insert the new channel to the end of the global * channel list. * * NOTE: * The new sub-channel MUST be inserted AFTER it's * primary channel, so that the primary channel will * be found in the above loop for its baby siblings. */ mtx_lock(&sc->vmbus_chlist_lock); TAILQ_INSERT_TAIL(&sc->vmbus_chlist, new_channel, ch_link); mtx_unlock(&sc->vmbus_chlist_lock); new_channel->state = HV_CHANNEL_OPEN_STATE; /* * Bump up sub-channel count and notify anyone that is * interested in this sub-channel, after this sub-channel * is setup. */ mtx_lock(&channel->sc_lock); channel->subchan_cnt++; mtx_unlock(&channel->sc_lock); wakeup(channel); return; } printf("VMBUS: duplicated primary channel%u\n", new_channel->ch_id); - hv_vmbus_free_vmbus_channel(new_channel); + vmbus_chan_free(new_channel); return; } new_channel->state = HV_CHANNEL_OPEN_STATE; /* * Add the new device to the bus. This will kick off device-driver * binding which eventually invokes the device driver's AddDevice() * method. * * NOTE: * Error is ignored here; don't have much to do if error really * happens. */ hv_vmbus_child_device_register(new_channel); } void vmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu) { KASSERT(cpu >= 0 && cpu < mp_ncpus, ("invalid cpu %d", cpu)); if (chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WS2008 || chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WIN7) { /* Only cpu0 is supported */ cpu = 0; } chan->target_cpu = cpu; chan->target_vcpu = VMBUS_PCPU_GET(chan->vmbus_sc, vcpuid, cpu); if (bootverbose) { printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n", chan->ch_id, chan->target_cpu, chan->target_vcpu); } } void vmbus_channel_cpu_rr(struct hv_vmbus_channel *chan) { static uint32_t vmbus_chan_nextcpu; int cpu; cpu = atomic_fetchadd_int(&vmbus_chan_nextcpu, 1) % mp_ncpus; vmbus_channel_cpu_set(chan, cpu); } static void vmbus_channel_select_defcpu(struct hv_vmbus_channel *chan) { /* * By default, pin the channel to cpu0. Devices having * special channel-cpu mapping requirement should call * vmbus_channel_cpu_{set,rr}(). */ vmbus_channel_cpu_set(chan, 0); } /** * @brief Handler for channel offers from Hyper-V/Azure * * Handler for channel offers from vmbus in parent partition. */ static void vmbus_channel_on_offer(struct vmbus_softc *sc, const struct vmbus_message *msg) { /* New channel is offered by vmbus */ vmbus_scan_newchan(sc); vmbus_channel_on_offer_internal(sc, (const struct vmbus_chanmsg_choffer *)msg->msg_data); } static void vmbus_channel_on_offer_internal(struct vmbus_softc *sc, const struct vmbus_chanmsg_choffer *offer) { hv_vmbus_channel* new_channel; /* * Allocate the channel object and save this offer */ - new_channel = hv_vmbus_allocate_channel(sc); + new_channel = vmbus_chan_alloc(sc); + if (new_channel == NULL) { + device_printf(sc->vmbus_dev, "allocate chan%u failed\n", + offer->chm_chanid); + return; + } + new_channel->ch_id = offer->chm_chanid; new_channel->ch_subidx = offer->chm_subidx; new_channel->ch_guid_type = offer->chm_chtype; new_channel->ch_guid_inst = offer->chm_chinst; /* Batch reading is on by default */ new_channel->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD; if (offer->chm_flags1 & VMBUS_CHOFFER_FLAG1_HASMNF) new_channel->ch_flags |= VMBUS_CHAN_FLAG_HASMNF; - new_channel->ch_monprm = hyperv_dmamem_alloc( - bus_get_dma_tag(sc->vmbus_dev), - HYPERCALL_PARAM_ALIGN, 0, sizeof(struct hyperv_mon_param), - &new_channel->ch_monprm_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); - if (new_channel->ch_monprm == NULL) { - device_printf(sc->vmbus_dev, "monprm alloc failed\n"); - /* XXX */ - mtx_destroy(&new_channel->sc_lock); - free(new_channel, M_DEVBUF); - return; - } new_channel->ch_monprm->mp_connid = VMBUS_CONNID_EVENT; if (sc->vmbus_version != VMBUS_VERSION_WS2008) new_channel->ch_monprm->mp_connid = offer->chm_connid; if (new_channel->ch_flags & VMBUS_CHAN_FLAG_HASMNF) { new_channel->ch_montrig_idx = offer->chm_montrig / VMBUS_MONTRIG_LEN; if (new_channel->ch_montrig_idx >= VMBUS_MONTRIGS_MAX) panic("invalid monitor trigger %u", offer->chm_montrig); new_channel->ch_montrig_mask = 1 << (offer->chm_montrig % VMBUS_MONTRIG_LEN); } /* Select default cpu for this channel. */ vmbus_channel_select_defcpu(new_channel); vmbus_channel_process_offer(new_channel); } /* * XXX pretty broken; need rework. */ static void vmbus_chan_msgproc_chrescind(struct vmbus_softc *sc, const struct vmbus_message *msg) { const struct vmbus_chanmsg_chrescind *note; struct hv_vmbus_channel *chan; note = (const struct vmbus_chanmsg_chrescind *)msg->msg_data; if (note->chm_chanid > VMBUS_CHAN_MAX) { device_printf(sc->vmbus_dev, "invalid rescinded chan%u\n", note->chm_chanid); return; } if (bootverbose) { device_printf(sc->vmbus_dev, "chan%u rescinded\n", note->chm_chanid); } chan = sc->vmbus_chmap[note->chm_chanid]; if (chan == NULL) return; sc->vmbus_chmap[note->chm_chanid] = NULL; taskqueue_enqueue(taskqueue_thread, &chan->ch_detach_task); } static void vmbus_chan_detach_task(void *xchan, int pending __unused) { struct hv_vmbus_channel *chan = xchan; if (HV_VMBUS_CHAN_ISPRIMARY(chan)) { /* Only primary channel owns the device */ hv_vmbus_child_device_unregister(chan); /* NOTE: DO NOT free primary channel for now */ } else { struct vmbus_softc *sc = chan->vmbus_sc; struct hv_vmbus_channel *pri_chan = chan->primary_channel; struct vmbus_chanmsg_chfree *req; struct vmbus_msghc *mh; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for chfree(chan%u)\n", chan->ch_id); goto remove; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHFREE; req->chm_chanid = chan->ch_id; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); if (error) { device_printf(sc->vmbus_dev, "chfree(chan%u) failed: %d", chan->ch_id, error); /* NOTE: Move on! */ } else { if (bootverbose) { device_printf(sc->vmbus_dev, "chan%u freed\n", chan->ch_id); } } remove: mtx_lock(&sc->vmbus_chlist_lock); TAILQ_REMOVE(&sc->vmbus_chlist, chan, ch_link); mtx_unlock(&sc->vmbus_chlist_lock); mtx_lock(&pri_chan->sc_lock); TAILQ_REMOVE(&pri_chan->sc_list_anchor, chan, sc_list_entry); KASSERT(pri_chan->subchan_cnt > 0, ("invalid subchan_cnt %d", pri_chan->subchan_cnt)); pri_chan->subchan_cnt--; mtx_unlock(&pri_chan->sc_lock); wakeup(pri_chan); - hv_vmbus_free_vmbus_channel(chan); + vmbus_chan_free(chan); } } /** * * @brief Invoked when all offers have been delivered. */ static void vmbus_channel_on_offers_delivered(struct vmbus_softc *sc, const struct vmbus_message *msg __unused) { /* No more new channels for the channel request. */ vmbus_scan_done(sc); } /** * @brief Release channels that are unattached/unconnected (i.e., no drivers associated) */ void hv_vmbus_release_unattached_channels(struct vmbus_softc *sc) { hv_vmbus_channel *channel; mtx_lock(&sc->vmbus_chlist_lock); while (!TAILQ_EMPTY(&sc->vmbus_chlist)) { channel = TAILQ_FIRST(&sc->vmbus_chlist); TAILQ_REMOVE(&sc->vmbus_chlist, channel, ch_link); if (HV_VMBUS_CHAN_ISPRIMARY(channel)) { /* Only primary channel owns the device */ hv_vmbus_child_device_unregister(channel); } - hv_vmbus_free_vmbus_channel(channel); + vmbus_chan_free(channel); } bzero(sc->vmbus_chmap, sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX); mtx_unlock(&sc->vmbus_chlist_lock); } /** * @brief Select the best outgoing channel * * The channel whose vcpu binding is closest to the currect vcpu will * be selected. * If no multi-channel, always select primary channel * * @param primary - primary channel */ struct hv_vmbus_channel * vmbus_select_outgoing_channel(struct hv_vmbus_channel *primary) { hv_vmbus_channel *new_channel = NULL; hv_vmbus_channel *outgoing_channel = primary; int old_cpu_distance = 0; int new_cpu_distance = 0; int cur_vcpu = 0; int smp_pro_id = PCPU_GET(cpuid); if (TAILQ_EMPTY(&primary->sc_list_anchor)) { return outgoing_channel; } if (smp_pro_id >= MAXCPU) { return outgoing_channel; } cur_vcpu = VMBUS_PCPU_GET(primary->vmbus_sc, vcpuid, smp_pro_id); TAILQ_FOREACH(new_channel, &primary->sc_list_anchor, sc_list_entry) { if (new_channel->state != HV_CHANNEL_OPENED_STATE){ continue; } if (new_channel->target_vcpu == cur_vcpu){ return new_channel; } old_cpu_distance = ((outgoing_channel->target_vcpu > cur_vcpu) ? (outgoing_channel->target_vcpu - cur_vcpu) : (cur_vcpu - outgoing_channel->target_vcpu)); new_cpu_distance = ((new_channel->target_vcpu > cur_vcpu) ? (new_channel->target_vcpu - cur_vcpu) : (cur_vcpu - new_channel->target_vcpu)); if (old_cpu_distance < new_cpu_distance) { continue; } outgoing_channel = new_channel; } return(outgoing_channel); } struct hv_vmbus_channel ** vmbus_get_subchan(struct hv_vmbus_channel *pri_chan, int subchan_cnt) { struct hv_vmbus_channel **ret, *chan; int i; ret = malloc(subchan_cnt * sizeof(struct hv_vmbus_channel *), M_TEMP, M_WAITOK); mtx_lock(&pri_chan->sc_lock); while (pri_chan->subchan_cnt < subchan_cnt) mtx_sleep(pri_chan, &pri_chan->sc_lock, 0, "subch", 0); i = 0; TAILQ_FOREACH(chan, &pri_chan->sc_list_anchor, sc_list_entry) { /* TODO: refcnt chan */ ret[i] = chan; ++i; if (i == subchan_cnt) break; } KASSERT(i == subchan_cnt, ("invalid subchan count %d, should be %d", pri_chan->subchan_cnt, subchan_cnt)); mtx_unlock(&pri_chan->sc_lock); return ret; } void vmbus_rel_subchan(struct hv_vmbus_channel **subchan, int subchan_cnt __unused) { free(subchan, M_TEMP); } void vmbus_drain_subchan(struct hv_vmbus_channel *pri_chan) { mtx_lock(&pri_chan->sc_lock); while (pri_chan->subchan_cnt > 0) mtx_sleep(pri_chan, &pri_chan->sc_lock, 0, "dsubch", 0); mtx_unlock(&pri_chan->sc_lock); } void vmbus_chan_msgproc(struct vmbus_softc *sc, const struct vmbus_message *msg) { vmbus_chanmsg_proc_t msg_proc; uint32_t msg_type; msg_type = ((const struct vmbus_chanmsg_hdr *)msg->msg_data)->chm_type; if (msg_type >= VMBUS_CHANMSG_TYPE_MAX) { device_printf(sc->vmbus_dev, "unknown message type 0x%x\n", msg_type); return; } msg_proc = vmbus_chanmsg_process[msg_type]; if (msg_proc != NULL) msg_proc(sc, msg); } Index: head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h =================================================================== --- head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h (revision 302807) +++ head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h (revision 302808) @@ -1,159 +1,158 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef __HYPERV_PRIV_H__ #define __HYPERV_PRIV_H__ #include #include #include #include #include struct vmbus_softc; typedef struct { void* data; uint32_t length; } hv_vmbus_sg_buffer_list; typedef struct { uint32_t current_interrupt_mask; uint32_t current_read_index; uint32_t current_write_index; uint32_t bytes_avail_to_read; uint32_t bytes_avail_to_write; } hv_vmbus_ring_buffer_debug_info; typedef struct { uint32_t rel_id; hv_vmbus_channel_state state; struct hyperv_guid interface_type; struct hyperv_guid interface_instance; uint32_t monitor_id; uint32_t server_monitor_pending; uint32_t server_monitor_latency; uint32_t server_monitor_connection_id; uint32_t client_monitor_pending; uint32_t client_monitor_latency; uint32_t client_monitor_connection_id; hv_vmbus_ring_buffer_debug_info inbound; hv_vmbus_ring_buffer_debug_info outbound; } hv_vmbus_channel_debug_info; /* * The format must be the same as hv_vm_data_gpa_direct */ typedef struct hv_vmbus_channel_packet_page_buffer { uint16_t type; uint16_t data_offset8; uint16_t length8; uint16_t flags; uint64_t transaction_id; uint32_t reserved; uint32_t range_count; hv_vmbus_page_buffer range[HV_MAX_PAGE_BUFFER_COUNT]; } __packed hv_vmbus_channel_packet_page_buffer; /* * The format must be the same as hv_vm_data_gpa_direct */ typedef struct hv_vmbus_channel_packet_multipage_buffer { uint16_t type; uint16_t data_offset8; uint16_t length8; uint16_t flags; uint64_t transaction_id; uint32_t reserved; uint32_t range_count; /* Always 1 in this case */ hv_vmbus_multipage_buffer range; } __packed hv_vmbus_channel_packet_multipage_buffer; /* * Private, VM Bus functions */ struct sysctl_ctx_list; struct sysctl_oid_list; void hv_ring_buffer_stat( struct sysctl_ctx_list *ctx, struct sysctl_oid_list *tree_node, hv_vmbus_ring_buffer_info *rbi, const char *desc); int hv_vmbus_ring_buffer_init( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len); void hv_ring_buffer_cleanup( hv_vmbus_ring_buffer_info *ring_info); int hv_ring_buffer_write( hv_vmbus_ring_buffer_info *ring_info, hv_vmbus_sg_buffer_list sg_buffers[], uint32_t sg_buff_count, boolean_t *need_sig); int hv_ring_buffer_peek( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len); int hv_ring_buffer_read( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len, uint32_t offset); uint32_t hv_vmbus_get_ring_buffer_interrupt_mask( hv_vmbus_ring_buffer_info *ring_info); void hv_vmbus_dump_ring_info( hv_vmbus_ring_buffer_info *ring_info, char *prefix); void hv_ring_buffer_read_begin( hv_vmbus_ring_buffer_info *ring_info); uint32_t hv_ring_buffer_read_end( hv_vmbus_ring_buffer_info *ring_info); -void hv_vmbus_free_vmbus_channel(hv_vmbus_channel *channel); void hv_vmbus_release_unattached_channels( struct vmbus_softc *); int hv_vmbus_child_device_register( struct hv_vmbus_channel *chan); int hv_vmbus_child_device_unregister( struct hv_vmbus_channel *chan); #endif /* __HYPERV_PRIV_H__ */