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[Qemu-devel] [PULL 16/21] xen/9pfs: send responses back to the frontend
From: |
Stefano Stabellini |
Subject: |
[Qemu-devel] [PULL 16/21] xen/9pfs: send responses back to the frontend |
Date: |
Fri, 21 Apr 2017 13:14:57 -0700 |
Once a request is completed, xen_9pfs_push_and_notify gets called. In
xen_9pfs_push_and_notify, update the indexes (data has already been
copied to the sg by the common code) and send a notification to the
frontend.
Schedule the bottom-half to check if we already have any other requests
pending.
Signed-off-by: Stefano Stabellini <address@hidden>
CC: address@hidden
CC: address@hidden
CC: Aneesh Kumar K.V <address@hidden>
CC: Greg Kurz <address@hidden>
---
hw/9pfs/xen-9p-backend.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 0c1dd5e..7e962aa 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -183,6 +183,25 @@ static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu,
static void xen_9pfs_push_and_notify(V9fsPDU *pdu)
{
+ RING_IDX prod;
+ Xen9pfsDev *priv = container_of(pdu->s, Xen9pfsDev, state);
+ Xen9pfsRing *ring = &priv->rings[pdu->tag % priv->num_rings];
+
+ g_free(ring->sg);
+ ring->sg = NULL;
+
+ ring->intf->out_cons = ring->out_cons;
+ xen_wmb();
+
+ prod = ring->intf->in_prod;
+ xen_rmb();
+ ring->intf->in_prod = prod + pdu->size;
+ xen_wmb();
+
+ ring->inprogress = false;
+ xenevtchn_notify(ring->evtchndev, ring->local_port);
+
+ qemu_bh_schedule(ring->bh);
}
static const struct V9fsTransport xen_9p_transport = {
--
1.9.1
- [Qemu-devel] [PULL 05/21] xen: use libxendevicemodel when available, (continued)
- [Qemu-devel] [PULL 05/21] xen: use libxendevicemodel when available, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 06/21] xen: use 5 digit xen versions, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 07/21] xen: use libxendevice model to restrict operations, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 08/21] xen: additionally restrict xenforeignmemory operations, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 09/21] configure: use pkg-config for obtaining xen version, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 11/21] 9p: introduce a type for the 9p header, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 10/21] xen: import ring.h from xen, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 12/21] xen/9pfs: introduce Xen 9pfs backend, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 13/21] xen/9pfs: connect to the frontend, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 14/21] xen/9pfs: receive requests from the frontend, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 16/21] xen/9pfs: send responses back to the frontend,
Stefano Stabellini <=
- [Qemu-devel] [PULL 15/21] xen/9pfs: implement in/out_iov_from_pdu and vmarshal/vunmarshal, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 17/21] xen/9pfs: build and register Xen 9pfs backend, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 18/21] add xen-9p-backend to MAINTAINERS under Xen, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 19/21] move xen-common.c to hw/xen/, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 21/21] move xen-mapcache.c to hw/i386/xen/, Stefano Stabellini, 2017/04/21
- [Qemu-devel] [PULL 20/21] move xen-hvm.c to hw/i386/xen/, Stefano Stabellini, 2017/04/21
- Re: [Qemu-devel] [PULL 0/21] Please pull xen-20170421-tag for 2.10, Peter Maydell, 2017/04/24