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Date: Thu, 2 Feb 2012 16:49:19 +0000
From: Wei Liu <wei.liu2@...rix.com>
To: netdev@...r.kernel.org, xen-devel@...ts.xensource.com
CC: ian.campbell@...rix.com, konrad.wilk@...cle.com,
Wei Liu <wei.liu2@...rix.com>
Subject: [RFC PATCH V4 09/13] Bundle fix for xen backends and frontends
Signed-off-by: Wei Liu <wei.liu2@...rix.com>
---
drivers/block/xen-blkback/xenbus.c | 8 +++++---
drivers/block/xen-blkfront.c | 5 +++--
drivers/net/xen-netback/netback.c | 4 ++--
drivers/net/xen-netfront.c | 9 +++++----
drivers/pci/xen-pcifront.c | 5 +++--
drivers/scsi/xen-scsiback/common.h | 3 ++-
drivers/scsi/xen-scsiback/interface.c | 6 ++++--
drivers/scsi/xen-scsiback/xenbus.c | 4 ++--
drivers/scsi/xen-scsifront/xenbus.c | 5 +++--
drivers/xen/xen-pciback/xenbus.c | 11 ++++++-----
10 files changed, 35 insertions(+), 25 deletions(-)
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 9e9c8a1..ef7e88b 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -122,7 +122,8 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid)
return blkif;
}
-static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page,
+static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page[],
+ int nr_pages,
unsigned int evtchn)
{
int err;
@@ -131,7 +132,8 @@ static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page,
if (blkif->irq)
return 0;
- err = xenbus_map_ring_valloc(blkif->be->dev, shared_page, &blkif->blk_ring);
+ err = xenbus_map_ring_valloc(blkif->be->dev, shared_page,
+ nr_pages, &blkif->blk_ring);
if (err < 0)
return err;
@@ -779,7 +781,7 @@ static int connect_ring(struct backend_info *be)
ring_ref, evtchn, be->blkif->blk_protocol, protocol);
/* Map the shared frame, irq etc. */
- err = xen_blkif_map(be->blkif, ring_ref, evtchn);
+ err = xen_blkif_map(be->blkif, &ring_ref, 1, evtchn);
if (err) {
xenbus_dev_fatal(dev, err, "mapping ring-ref %lu port %u",
ring_ref, evtchn);
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 2f22874..2c6443a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -827,6 +827,7 @@ static int setup_blkring(struct xenbus_device *dev,
{
struct blkif_sring *sring;
int err;
+ int grefs[1];
info->ring_ref = GRANT_INVALID_REF;
@@ -840,13 +841,13 @@ static int setup_blkring(struct xenbus_device *dev,
sg_init_table(info->sg, BLKIF_MAX_SEGMENTS_PER_REQUEST);
- err = xenbus_grant_ring(dev, virt_to_mfn(info->ring.sring));
+ err = xenbus_grant_ring(dev, info->ring.sring, 1, grefs);
if (err < 0) {
free_page((unsigned long)sring);
info->ring.sring = NULL;
goto fail;
}
- info->ring_ref = err;
+ info->ring_ref = grefs[0];
err = xenbus_alloc_evtchn(dev, &info->evtchn);
if (err)
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 384f4e5..cb1a661 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1440,7 +1440,7 @@ int xenvif_map_frontend_rings(struct xenvif *vif,
int err = -ENOMEM;
err = xenbus_map_ring_valloc(xenvif_to_xenbus_device(vif),
- tx_ring_ref, &addr);
+ &tx_ring_ref, 1, &addr);
if (err)
goto err;
@@ -1448,7 +1448,7 @@ int xenvif_map_frontend_rings(struct xenvif *vif,
BACK_RING_INIT(&vif->tx, txs, PAGE_SIZE);
err = xenbus_map_ring_valloc(xenvif_to_xenbus_device(vif),
- rx_ring_ref, &addr);
+ &rx_ring_ref, 1, &addr);
if (err)
goto err;
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 01f589d..b7ff815 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1482,6 +1482,7 @@ static int setup_netfront(struct xenbus_device *dev, struct netfront_info *info)
struct xen_netif_tx_sring *txs;
struct xen_netif_rx_sring *rxs;
int err;
+ int grefs[1];
struct net_device *netdev = info->netdev;
info->tx_ring_ref = GRANT_INVALID_REF;
@@ -1505,13 +1506,13 @@ static int setup_netfront(struct xenbus_device *dev, struct netfront_info *info)
SHARED_RING_INIT(txs);
FRONT_RING_INIT(&info->tx, txs, PAGE_SIZE);
- err = xenbus_grant_ring(dev, virt_to_mfn(txs));
+ err = xenbus_grant_ring(dev, txs, 1, grefs);
if (err < 0) {
free_page((unsigned long)txs);
goto fail;
}
- info->tx_ring_ref = err;
+ info->tx_ring_ref = grefs[0];
rxs = (struct xen_netif_rx_sring *)get_zeroed_page(GFP_NOIO | __GFP_HIGH);
if (!rxs) {
err = -ENOMEM;
@@ -1521,12 +1522,12 @@ static int setup_netfront(struct xenbus_device *dev, struct netfront_info *info)
SHARED_RING_INIT(rxs);
FRONT_RING_INIT(&info->rx, rxs, PAGE_SIZE);
- err = xenbus_grant_ring(dev, virt_to_mfn(rxs));
+ err = xenbus_grant_ring(dev, rxs, 1, grefs);
if (err < 0) {
free_page((unsigned long)rxs);
goto fail;
}
- info->rx_ring_ref = err;
+ info->rx_ring_ref = grefs[0];
err = xenbus_alloc_evtchn(dev, &info->evtchn);
if (err)
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 7cf3d2f..394c926 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -767,12 +767,13 @@ static int pcifront_publish_info(struct pcifront_device *pdev)
{
int err = 0;
struct xenbus_transaction trans;
+ int grefs[1];
- err = xenbus_grant_ring(pdev->xdev, virt_to_mfn(pdev->sh_info));
+ err = xenbus_grant_ring(pdev->xdev, pdev->sh_info, 1, grefs);
if (err < 0)
goto out;
- pdev->gnt_ref = err;
+ pdev->gnt_ref = grefs[0];
err = xenbus_alloc_evtchn(pdev->xdev, &pdev->evtchn);
if (err)
diff --git a/drivers/scsi/xen-scsiback/common.h b/drivers/scsi/xen-scsiback/common.h
index dafa79e..4d13617 100644
--- a/drivers/scsi/xen-scsiback/common.h
+++ b/drivers/scsi/xen-scsiback/common.h
@@ -150,7 +150,8 @@ typedef struct {
irqreturn_t scsiback_intr(int, void *);
int scsiback_init_sring(struct vscsibk_info *info,
- unsigned long ring_ref, unsigned int evtchn);
+ int ring_ref[], int nr_refs,
+ unsigned int evtchn);
int scsiback_schedule(void *data);
diff --git a/drivers/scsi/xen-scsiback/interface.c b/drivers/scsi/xen-scsiback/interface.c
index 663568e..fad0a63 100644
--- a/drivers/scsi/xen-scsiback/interface.c
+++ b/drivers/scsi/xen-scsiback/interface.c
@@ -60,7 +60,8 @@ struct vscsibk_info *vscsibk_info_alloc(domid_t domid)
}
int scsiback_init_sring(struct vscsibk_info *info,
- unsigned long ring_ref, unsigned int evtchn)
+ int ring_ref[], int nr_refs,
+ unsigned int evtchn)
{
struct vscsiif_sring *sring;
int err;
@@ -73,7 +74,8 @@ int scsiback_init_sring(struct vscsibk_info *info,
return -1;
}
- err = xenbus_map_ring_valloc(info->dev, ring_ref, &info->ring_area);
+ err = xenbus_map_ring_valloc(info->dev, ring_ref, nr_refs,
+ &info->ring_area);
if (err < 0)
return -ENOMEM;
diff --git a/drivers/scsi/xen-scsiback/xenbus.c b/drivers/scsi/xen-scsiback/xenbus.c
index 2869f89..81d5598 100644
--- a/drivers/scsi/xen-scsiback/xenbus.c
+++ b/drivers/scsi/xen-scsiback/xenbus.c
@@ -60,7 +60,7 @@ static int __vscsiif_name(struct backend_info *be, char *buf)
static int scsiback_map(struct backend_info *be)
{
struct xenbus_device *dev = be->dev;
- unsigned long ring_ref = 0;
+ int ring_ref = 0;
unsigned int evtchn = 0;
int err;
char name[TASK_COMM_LEN];
@@ -72,7 +72,7 @@ static int scsiback_map(struct backend_info *be)
xenbus_dev_fatal(dev, err, "reading %s ring", dev->otherend);
return err;
}
- err = scsiback_init_sring(be->info, ring_ref, evtchn);
+ err = scsiback_init_sring(be->info, &ring_ref, 1, evtchn);
if (err)
return err;
diff --git a/drivers/scsi/xen-scsifront/xenbus.c b/drivers/scsi/xen-scsifront/xenbus.c
index bc5c289..8726410 100644
--- a/drivers/scsi/xen-scsifront/xenbus.c
+++ b/drivers/scsi/xen-scsifront/xenbus.c
@@ -60,6 +60,7 @@ static int scsifront_alloc_ring(struct vscsifrnt_info *info)
struct xenbus_device *dev = info->dev;
struct vscsiif_sring *sring;
int err = -ENOMEM;
+ int grefs[1];
info->ring_ref = GRANT_INVALID_REF;
@@ -73,14 +74,14 @@ static int scsifront_alloc_ring(struct vscsifrnt_info *info)
SHARED_RING_INIT(sring);
FRONT_RING_INIT(&info->ring, sring, PAGE_SIZE);
- err = xenbus_grant_ring(dev, virt_to_mfn(sring));
+ err = xenbus_grant_ring(dev, sring, 1, grefs);
if (err < 0) {
free_page((unsigned long) sring);
info->ring.sring = NULL;
xenbus_dev_fatal(dev, err, "fail to grant shared ring (Front to Back)");
goto free_sring;
}
- info->ring_ref = err;
+ info->ring_ref = grefs[0];
err = xenbus_alloc_evtchn(dev, &info->evtchn);
if (err)
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 5a42ae7..0d8a98c 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -98,17 +98,18 @@ static void free_pdev(struct xen_pcibk_device *pdev)
kfree(pdev);
}
-static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref,
- int remote_evtchn)
+static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref[],
+ int nr_grefs,
+ int remote_evtchn)
{
int err = 0;
void *vaddr;
dev_dbg(&pdev->xdev->dev,
"Attaching to frontend resources - gnt_ref=%d evtchn=%d\n",
- gnt_ref, remote_evtchn);
+ gnt_ref[0], remote_evtchn);
- err = xenbus_map_ring_valloc(pdev->xdev, gnt_ref, &vaddr);
+ err = xenbus_map_ring_valloc(pdev->xdev, gnt_ref, nr_grefs, &vaddr);
if (err < 0) {
xenbus_dev_fatal(pdev->xdev, err,
"Error mapping other domain page in ours.");
@@ -172,7 +173,7 @@ static int xen_pcibk_attach(struct xen_pcibk_device *pdev)
goto out;
}
- err = xen_pcibk_do_attach(pdev, gnt_ref, remote_evtchn);
+ err = xen_pcibk_do_attach(pdev, &gnt_ref, 1, remote_evtchn);
if (err)
goto out;
--
1.7.2.5
--
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