Date: Wed, 28 Sep 2016 04:08:21 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r306387 - in head/sys/dev/hyperv: include vmbus Message-ID: <201609280408.u8S48Lcf051492@repo.freebsd.org>
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Author: sephe Date: Wed Sep 28 04:08:20 2016 New Revision: 306387 URL: https://svnweb.freebsd.org/changeset/base/306387 Log: hyperv/vmbus: Add functions to test RX/TX bufring emptiness MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D8044 Modified: head/sys/dev/hyperv/include/vmbus.h head/sys/dev/hyperv/vmbus/vmbus_brvar.h head/sys/dev/hyperv/vmbus/vmbus_chan.c Modified: head/sys/dev/hyperv/include/vmbus.h ============================================================================== --- head/sys/dev/hyperv/include/vmbus.h Wed Sep 28 04:02:17 2016 (r306386) +++ head/sys/dev/hyperv/include/vmbus.h Wed Sep 28 04:08:20 2016 (r306387) @@ -173,5 +173,7 @@ const struct hyperv_guid * vmbus_chan_guid_inst(const struct vmbus_channel *chan); int vmbus_chan_prplist_nelem(int br_size, int prpcnt_max, int dlen_max); +bool vmbus_chan_rx_empty(const struct vmbus_channel *chan); +bool vmbus_chan_tx_empty(const struct vmbus_channel *chan); #endif /* !_VMBUS_H_ */ Modified: head/sys/dev/hyperv/vmbus/vmbus_brvar.h ============================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_brvar.h Wed Sep 28 04:02:17 2016 (r306386) +++ head/sys/dev/hyperv/vmbus/vmbus_brvar.h Wed Sep 28 04:08:20 2016 (r306387) @@ -83,6 +83,20 @@ vmbus_txbr_maxpktsz(const struct vmbus_t return (tbr->txbr_dsize - sizeof(uint64_t) - 1); } +static __inline bool +vmbus_txbr_empty(const struct vmbus_txbr *tbr) +{ + + return (tbr->txbr_windex == tbr->txbr_rindex ? true : false); +} + +static __inline bool +vmbus_rxbr_empty(const struct vmbus_rxbr *rbr) +{ + + return (rbr->rxbr_windex == rbr->rxbr_rindex ? true : false); +} + static __inline int vmbus_br_nelem(int br_size, int elem_size) { Modified: head/sys/dev/hyperv/vmbus/vmbus_chan.c ============================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_chan.c Wed Sep 28 04:02:17 2016 (r306386) +++ head/sys/dev/hyperv/vmbus/vmbus_chan.c Wed Sep 28 04:08:20 2016 (r306387) @@ -1692,3 +1692,17 @@ vmbus_chan_prplist_nelem(int br_size, in return (vmbus_br_nelem(br_size, elem_size)); } + +bool +vmbus_chan_tx_empty(const struct vmbus_channel *chan) +{ + + return (vmbus_txbr_empty(&chan->ch_txbr)); +} + +bool +vmbus_chan_rx_empty(const struct vmbus_channel *chan) +{ + + return (vmbus_rxbr_empty(&chan->ch_rxbr)); +}
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