Author: sephe Date: Wed Jul 13 06:46:29 2016 New Revision: 302709 URL: https://svnweb.freebsd.org/changeset/base/302709
Log: hyperv/vmbus: Pack bool field into flags field MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7038 Modified: head/sys/dev/hyperv/include/hyperv.h head/sys/dev/hyperv/vmbus/hv_channel.c head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Modified: head/sys/dev/hyperv/include/hyperv.h ============================================================================== --- head/sys/dev/hyperv/include/hyperv.h Wed Jul 13 06:39:04 2016 (r302708) +++ head/sys/dev/hyperv/include/hyperv.h Wed Jul 13 06:46:29 2016 (r302709) @@ -551,17 +551,6 @@ typedef struct hv_vmbus_channel { hv_vmbus_pfn_channel_callback on_channel_callback; void* channel_callback_context; - /* - * If batched_reading is set to "true", mask the interrupt - * and read until the channel is empty. - * If batched_reading is set to "false", the channel is not - * going to perform batched reading. - * - * Batched reading is enabled by default; specific - * drivers that don't want this behavior can turn it off. - */ - boolean_t batched_reading; - struct hypercall_sigevt_in *ch_sigevt; struct hyperv_dma ch_sigevt_dma; @@ -622,11 +611,23 @@ typedef struct hv_vmbus_channel { #define HV_VMBUS_CHAN_ISPRIMARY(chan) ((chan)->primary_channel == NULL) #define VMBUS_CHAN_FLAG_HASMNF 0x0001 +/* + * If this flag is set, this channel's interrupt will be masked in ISR, + * and the RX bufring will be drained before this channel's interrupt is + * unmasked. + * + * This flag is turned on by default. Drivers can turn it off according + * to their own requirement. + */ +#define VMBUS_CHAN_FLAG_BATCHREAD 0x0002 static inline void -hv_set_channel_read_state(hv_vmbus_channel* channel, boolean_t state) +hv_set_channel_read_state(hv_vmbus_channel* channel, boolean_t on) { - channel->batched_reading = state; + if (!on) + channel->ch_flags &= ~VMBUS_CHAN_FLAG_BATCHREAD; + else + channel->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD; } int hv_vmbus_channel_recv_packet( Modified: head/sys/dev/hyperv/vmbus/hv_channel.c ============================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel.c Wed Jul 13 06:39:04 2016 (r302708) +++ head/sys/dev/hyperv/vmbus/hv_channel.c Wed Jul 13 06:46:29 2016 (r302709) @@ -856,11 +856,13 @@ VmbusProcessChannelEvent(void* context, void* arg; uint32_t bytes_to_read; hv_vmbus_channel* channel = (hv_vmbus_channel*)context; - boolean_t is_batched_reading; + bool is_batched_reading = false; + + if (channel->ch_flags & VMBUS_CHAN_FLAG_BATCHREAD) + is_batched_reading = true; if (channel->on_channel_callback != NULL) { arg = channel->channel_callback_context; - is_batched_reading = channel->batched_reading; /* * Optimize host to guest signaling by ensuring: * 1. While reading the channel, we disable interrupts from @@ -917,7 +919,7 @@ vmbus_event_flags_proc(struct vmbus_soft if (channel == NULL || channel->rxq == NULL) continue; - if (channel->batched_reading) + if (channel->ch_flags & VMBUS_CHAN_FLAG_BATCHREAD) hv_ring_buffer_read_begin(&channel->inbound); taskqueue_enqueue(channel->rxq, &channel->channel_task); } Modified: head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c ============================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Wed Jul 13 06:39:04 2016 (r302708) +++ head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Wed Jul 13 06:46:29 2016 (r302709) @@ -282,21 +282,19 @@ vmbus_channel_on_offer_internal(struct v { 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(sc); new_channel->ch_id = offer->child_rel_id; new_channel->ch_subidx = offer->offer.sub_channel_index; - if (offer->monitor_allocated) - new_channel->ch_flags |= VMBUS_CHAN_FLAG_HASMNF; new_channel->ch_guid_type = offer->offer.interface_type; new_channel->ch_guid_inst = offer->offer.interface_instance; - /* - * By default we setup state to enable batched - * reading. A specific service can choose to - * disable this prior to opening the channel. - */ - new_channel->batched_reading = TRUE; + /* Batch reading is on by default */ + new_channel->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD; + if (offer->monitor_allocated) + new_channel->ch_flags |= VMBUS_CHAN_FLAG_HASMNF; new_channel->ch_sigevt = hyperv_dmamem_alloc( bus_get_dma_tag(sc->vmbus_dev), @@ -310,7 +308,6 @@ vmbus_channel_on_offer_internal(struct v return; } new_channel->ch_sigevt->hc_connid = VMBUS_CONNID_EVENT; - if (sc->vmbus_version != VMBUS_VERSION_WS2008) new_channel->ch_sigevt->hc_connid = offer->connection_id; _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
