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Differential D6863 Diff 18272 head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c

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head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c

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#include <dev/hyperv/vmbus/hv_vmbus_priv.h> #include <dev/hyperv/vmbus/hv_vmbus_priv.h>
#include <dev/hyperv/vmbus/vmbus_reg.h> #include <dev/hyperv/vmbus/vmbus_reg.h>
#include <dev/hyperv/vmbus/vmbus_var.h> #include <dev/hyperv/vmbus/vmbus_var.h>
typedef void (*vmbus_chanmsg_proc_t) typedef void (*vmbus_chanmsg_proc_t)
(struct vmbus_softc *, const struct vmbus_message *); (struct vmbus_softc *, const struct vmbus_message *);
static void vmbus_channel_on_offer_internal( static struct hv_vmbus_channel *hv_vmbus_allocate_channel(struct vmbus_softc *);
static void vmbus_channel_on_offer_internal(struct vmbus_softc *,
const hv_vmbus_channel_offer_channel *offer); const hv_vmbus_channel_offer_channel *offer);
static void vmbus_channel_on_offer_rescind_internal(void *context); static void vmbus_channel_on_offer_rescind_internal(void *context);
static void vmbus_channel_on_offer(struct vmbus_softc *, static void vmbus_channel_on_offer(struct vmbus_softc *,
const struct vmbus_message *); const struct vmbus_message *);
static void vmbus_channel_on_open_result(struct vmbus_softc *, static void vmbus_channel_on_open_result(struct vmbus_softc *,
const struct vmbus_message *); const struct vmbus_message *);
static void vmbus_channel_on_offer_rescind(struct vmbus_softc *, static void vmbus_channel_on_offer_rescind(struct vmbus_softc *,
▲ Show 20 Lines • Show All 75 Lines • ▼ Show 20 Lineshv_queue_work_item(
return (taskqueue_enqueue(taskqueue_thread, &w->work)); return (taskqueue_enqueue(taskqueue_thread, &w->work));
} }
/** /**
* @brief Allocate and initialize a vmbus channel object * @brief Allocate and initialize a vmbus channel object
*/ */
hv_vmbus_channel* static struct hv_vmbus_channel *
hv_vmbus_allocate_channel(void) hv_vmbus_allocate_channel(struct vmbus_softc *sc)
{ {
hv_vmbus_channel* channel; struct hv_vmbus_channel *channel;
channel = (hv_vmbus_channel*) malloc( channel = malloc(sizeof(*channel), M_DEVBUF, M_WAITOK | M_ZERO);
sizeof(hv_vmbus_channel), channel->vmbus_sc = sc;
M_DEVBUF,
M_WAITOK | M_ZERO);
mtx_init(&channel->sc_lock, "vmbus multi channel", NULL, MTX_DEF); mtx_init(&channel->sc_lock, "vmbus multi channel", NULL, MTX_DEF);
TAILQ_INIT(&channel->sc_list_anchor); TAILQ_INIT(&channel->sc_list_anchor);
return (channel); return (channel);
} }
/** /**
▲ Show 20 Lines • Show All 141 Lines • ▼ Show 20 Linesvmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu)
if (hv_vmbus_protocal_version == HV_VMBUS_VERSION_WS2008 || if (hv_vmbus_protocal_version == HV_VMBUS_VERSION_WS2008 ||
hv_vmbus_protocal_version == HV_VMBUS_VERSION_WIN7) { hv_vmbus_protocal_version == HV_VMBUS_VERSION_WIN7) {
/* Only cpu0 is supported */ /* Only cpu0 is supported */
cpu = 0; cpu = 0;
} }
chan->target_cpu = cpu; chan->target_cpu = cpu;
chan->target_vcpu = VMBUS_PCPU_GET(vmbus_get_softc(), vcpuid, cpu); chan->target_vcpu = VMBUS_PCPU_GET(chan->vmbus_sc, vcpuid, cpu);
if (bootverbose) { if (bootverbose) {
printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n", printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n",
chan->offer_msg.child_rel_id, chan->offer_msg.child_rel_id,
chan->target_cpu, chan->target_vcpu); chan->target_cpu, chan->target_vcpu);
} }
} }
▲ Show 20 Lines • Show All 65 Lines • ▼ Show 20 Linesvmbus_channel_on_offer(struct vmbus_softc *sc, const struct vmbus_message *msg)
const hv_vmbus_channel_offer_channel *offer; const hv_vmbus_channel_offer_channel *offer;
mtx_lock(&vmbus_chwait_lock); mtx_lock(&vmbus_chwait_lock);
if ((vmbus_chancnt & VMBUS_CHANCNT_DONE) == 0) if ((vmbus_chancnt & VMBUS_CHANCNT_DONE) == 0)
vmbus_chancnt++; vmbus_chancnt++;
mtx_unlock(&vmbus_chwait_lock); mtx_unlock(&vmbus_chwait_lock);
offer = (const hv_vmbus_channel_offer_channel *)msg->msg_data; offer = (const hv_vmbus_channel_offer_channel *)msg->msg_data;
vmbus_channel_on_offer_internal(offer); vmbus_channel_on_offer_internal(sc, offer);
} }
static void static void
vmbus_channel_on_offer_internal(const hv_vmbus_channel_offer_channel *offer) vmbus_channel_on_offer_internal(struct vmbus_softc *sc,
const hv_vmbus_channel_offer_channel *offer)
{ {
hv_vmbus_channel* new_channel; hv_vmbus_channel* new_channel;
/* Allocate the channel object and save this offer */ /* Allocate the channel object and save this offer */
new_channel = hv_vmbus_allocate_channel(); new_channel = hv_vmbus_allocate_channel(sc);
/* /*
* By default we setup state to enable batched * By default we setup state to enable batched
* reading. A specific service can choose to * reading. A specific service can choose to
* disable this prior to opening the channel. * disable this prior to opening the channel.
*/ */
new_channel->batched_reading = TRUE; new_channel->batched_reading = TRUE;
▲ Show 20 Lines • Show All 276 Lines • ▼ Show 20 Linesvmbus_select_outgoing_channel(struct hv_vmbus_channel *primary)
if (TAILQ_EMPTY(&primary->sc_list_anchor)) { if (TAILQ_EMPTY(&primary->sc_list_anchor)) {
return outgoing_channel; return outgoing_channel;
} }
if (smp_pro_id >= MAXCPU) { if (smp_pro_id >= MAXCPU) {
return outgoing_channel; return outgoing_channel;
} }
cur_vcpu = VMBUS_PCPU_GET(vmbus_get_softc(), vcpuid, smp_pro_id); cur_vcpu = VMBUS_PCPU_GET(primary->vmbus_sc, vcpuid, smp_pro_id);
TAILQ_FOREACH(new_channel, &primary->sc_list_anchor, sc_list_entry) { TAILQ_FOREACH(new_channel, &primary->sc_list_anchor, sc_list_entry) {
if (new_channel->state != HV_CHANNEL_OPENED_STATE){ if (new_channel->state != HV_CHANNEL_OPENED_STATE){
continue; continue;
} }
if (new_channel->target_vcpu == cur_vcpu){ if (new_channel->target_vcpu == cur_vcpu){
return new_channel; return new_channel;
▲ Show 20 Lines • Show All 90 Lines • Show Last 20 Lines