search for: ring_event_flags_disable

Displaying 20 results from an estimated 20 matches for "ring_event_flags_disable".

2018 May 29
0
[RFC V5 PATCH 8/8] vhost: event suppression for packed ring
...mp_mb(); + + if (vhost_get_avail(vq, event_flags, + &vq->driver_event->flags) < 0) { + vq_err(vq, "Failed to get driver desc_event_flags"); + return true; + } + + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) + return event_flags != + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); + + old = vq->signalled_used; + v = vq->signalled_used_valid; + new = vq->signalled_used = vq->last_used_idx; + vq->signalled_used_valid = true; + + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) + return event_flags != + cpu_to_vhost16(vq, RING_EVENT_FLAGS_...
2018 May 30
2
[RFC V5 PATCH 8/8] vhost: event suppression for packed ring
...nt_flags, > + &vq->driver_event->flags) < 0) { > + vq_err(vq, "Failed to get driver desc_event_flags"); > + return true; > + } > + > + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) > + return event_flags != > + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); > + > + old = vq->signalled_used; > + v = vq->signalled_used_valid; > + new = vq->signalled_used = vq->last_used_idx; > + vq->signalled_used_valid = true; > + > + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) > + return event_flags != > +...
2018 May 30
2
[RFC V5 PATCH 8/8] vhost: event suppression for packed ring
...nt_flags, > + &vq->driver_event->flags) < 0) { > + vq_err(vq, "Failed to get driver desc_event_flags"); > + return true; > + } > + > + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) > + return event_flags != > + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); > + > + old = vq->signalled_used; > + v = vq->signalled_used_valid; > + new = vq->signalled_used = vq->last_used_idx; > + vq->signalled_used_valid = true; > + > + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) > + return event_flags != > +...
2018 Mar 30
1
[RFC PATCH V2 8/8] vhost: event suppression for packed ring
...t_virtqueue *vq) > { > - /* FIXME: disable notification through device area */ > + __virtio16 flags; > + int r; > + > + if (vq->used_flags & VRING_USED_F_NO_NOTIFY) > + return; > + vq->used_flags |= VRING_USED_F_NO_NOTIFY; > + > + flags = cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); > + r = vhost_update_device_flags(vq, flags); > + if (r) > + vq_err(vq, "Failed to enable notification at %p: %d\n", > + &vq->device_event->desc_event_flags, r); > } > > static void vhost_disable_notify_split(struct vhost_dev *dev, > diff -...
2018 May 16
0
[RFC V4 PATCH 8/8] vhost: event suppression for packed ring
...rier that the Guest executes when enabling + * interrupts. + */ + smp_mb(); + + if (vhost_get_avail(vq, event_flags, + &vq->driver_event->flags) < 0) { + vq_err(vq, "Failed to get driver desc_event_flags"); + return true; + } + + if (event_flags == cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE)) + return false; + else if (event_flags == cpu_to_vhost16(vq, RING_EVENT_FLAGS_ENABLE)) + return true; + + /* Read desc event flags before event_off and event_wrap */ + smp_rmb(); + + if (vhost_get_avail(vq, event_off_wrap, + &vq->driver_event->off_warp) < 0) { + vq_err(vq, &...
2018 Jul 03
0
[PATCH net-next 8/8] vhost: event suppression for packed ring
...mp_mb(); + + if (vhost_get_avail(vq, event_flags, + &vq->driver_event->flags) < 0) { + vq_err(vq, "Failed to get driver desc_event_flags"); + return true; + } + + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) + return event_flags != + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); + + old = vq->signalled_used; + v = vq->signalled_used_valid; + new = vq->signalled_used = vq->last_used_idx; + vq->signalled_used_valid = true; + + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) + return event_flags != + cpu_to_vhost16(vq, RING_EVENT_FLAGS_...
2018 Jul 04
1
[PATCH net-next 6/8] virtio: introduce packed ring defines
...> + /* Buffer Length. */ > + __virtio32 len; > + /* Buffer ID. */ > + __virtio16 id; > + /* The flags depending on descriptor type. */ > + __virtio16 flags; > +}; > + > +/* Enable events */ > +#define RING_EVENT_FLAGS_ENABLE 0x0 > +/* Disable events */ > +#define RING_EVENT_FLAGS_DISABLE 0x1 > +/* > + * Enable events for a specific descriptor > + * (as specified by Descriptor Ring Change Event Offset/Wrap Counter). > + * Only valid if VIRTIO_F_RING_EVENT_IDX has been negotiated. > + */ > +#define RING_EVENT_FLAGS_DESC 0x2 For above three macros, maybe it's be...
2018 Jul 04
2
[PATCH net-next 8/8] vhost: event suppression for packed ring
...nt_flags, > + &vq->driver_event->flags) < 0) { > + vq_err(vq, "Failed to get driver desc_event_flags"); > + return true; > + } > + > + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) > + return event_flags != > + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); > + > + old = vq->signalled_used; > + v = vq->signalled_used_valid; > + new = vq->signalled_used = vq->last_used_idx; > + vq->signalled_used_valid = true; > + > + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) > + return event_flags != > +...
2018 Jul 04
2
[PATCH net-next 8/8] vhost: event suppression for packed ring
...nt_flags, > + &vq->driver_event->flags) < 0) { > + vq_err(vq, "Failed to get driver desc_event_flags"); > + return true; > + } > + > + if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) > + return event_flags != > + cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); > + > + old = vq->signalled_used; > + v = vq->signalled_used_valid; > + new = vq->signalled_used = vq->last_used_idx; > + vq->signalled_used_valid = true; > + > + if (event_flags != cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)) > + return event_flags != > +...
2018 Mar 26
0
[RFC PATCH V2 8/8] vhost: event suppression for packed ring
...fy_packed(struct vhost_dev *dev, struct vhost_virtqueue *vq) { - /* FIXME: disable notification through device area */ + __virtio16 flags; + int r; + + if (vq->used_flags & VRING_USED_F_NO_NOTIFY) + return; + vq->used_flags |= VRING_USED_F_NO_NOTIFY; + + flags = cpu_to_vhost16(vq, RING_EVENT_FLAGS_DISABLE); + r = vhost_update_device_flags(vq, flags); + if (r) + vq_err(vq, "Failed to enable notification at %p: %d\n", + &vq->device_event->desc_event_flags, r); } static void vhost_disable_notify_split(struct vhost_dev *dev, diff --git a/drivers/vhost/vhost.h b/drivers/v...
2018 Jul 03
0
[PATCH net-next 6/8] virtio: introduce packed ring defines
...ng_desc_packed { + /* Buffer Address. */ + __virtio64 addr; + /* Buffer Length. */ + __virtio32 len; + /* Buffer ID. */ + __virtio16 id; + /* The flags depending on descriptor type. */ + __virtio16 flags; +}; + +/* Enable events */ +#define RING_EVENT_FLAGS_ENABLE 0x0 +/* Disable events */ +#define RING_EVENT_FLAGS_DISABLE 0x1 +/* + * Enable events for a specific descriptor + * (as specified by Descriptor Ring Change Event Offset/Wrap Counter). + * Only valid if VIRTIO_F_RING_EVENT_IDX has been negotiated. + */ +#define RING_EVENT_FLAGS_DESC 0x2 +/* The value 0x3 is reserved */ + +struct vring_packed_desc_event { + /...
2018 May 29
9
[RFC V5 PATCH 0/8] Packed ring layout for vhost
Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V5 at https://lkml.org/lkml/2018/5/22/138. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on TX PPS when doing pktgen from guest to host. No ovbious improvement on RX PPS. We can do lots of optimizations on top but for simple
2018 Jul 03
12
[PATCH net-next 0/8] Packed virtqueue for vhost
Hi all: This series implements packed virtqueues. The code were tested with Tiwei's RFC V6 at https://lkml.org/lkml/2018/6/5/120. Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test virtio-net pmd as well when
2018 Jul 03
12
[PATCH net-next 0/8] Packed virtqueue for vhost
Hi all: This series implements packed virtqueues. The code were tested with Tiwei's RFC V6 at https://lkml.org/lkml/2018/6/5/120. Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test virtio-net pmd as well when
2018 Mar 26
12
[RFC PATCH V2 0/8] Packed ring for vhost
Hi all: This RFC implement packed ring layout. The code were tested with pmd implement by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html. Minor change was needed for pmd codes to kick virtqueue since it assumes a busy polling backend. Test were done between localhost and guest. Testpmd (rxonly) in guest reports 2.4Mpps. Testpmd (txonly) repots about 2.1Mpps. Notes: The event
2018 Mar 26
12
[RFC PATCH V2 0/8] Packed ring for vhost
Hi all: This RFC implement packed ring layout. The code were tested with pmd implement by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html. Minor change was needed for pmd codes to kick virtqueue since it assumes a busy polling backend. Test were done between localhost and guest. Testpmd (rxonly) in guest reports 2.4Mpps. Testpmd (txonly) repots about 2.1Mpps. Notes: The event
2018 May 16
12
[RFC V4 PATCH 0/8] Packed ring layout for vhost
Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on PPS (event index is off). More testing is ongoing. Notes for tester: - Start from this version, vhost need qemu co-operation to work
2018 May 16
12
[RFC V4 PATCH 0/8] Packed ring layout for vhost
Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on PPS (event index is off). More testing is ongoing. Notes for tester: - Start from this version, vhost need qemu co-operation to work
2018 Apr 23
11
[RFC V3 PATCH 0/8] Packed ring for vhost
Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and tweaks were needed on top of Tiwei's code to make it run. TCP stream and pktgen does not show obvious difference compared with split ring. Changes from V2: - do not use & in checking desc_event_flags - off should be most significant bit -
2018 Apr 23
11
[RFC V3 PATCH 0/8] Packed ring for vhost
Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and tweaks were needed on top of Tiwei's code to make it run. TCP stream and pktgen does not show obvious difference compared with split ring. Changes from V2: - do not use & in checking desc_event_flags - off should be most significant bit -