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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2/4] 9pfs: introduce transport specific callbacks
Don't call virtio functions from 9pfs generic code, use generic function
callbacks instead.
Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
hw/9pfs/9p.c | 8 ++++----
hw/9pfs/9p.h | 18 ++++++++++++++++++
hw/9pfs/virtio-9p-device.c | 18 ++++++++++++++----
hw/9pfs/virtio-9p.h | 9 ---------
4 files changed, 36 insertions(+), 17 deletions(-)
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 05e950f..5a20a13 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -47,7 +47,7 @@ ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char
*fmt, ...)
va_list ap;
va_start(ap, fmt);
- ret = virtio_pdu_vmarshal(pdu, offset, fmt, ap);
+ ret = pdu->s->transport->pdu_vmarshal(pdu, offset, fmt, ap);
va_end(ap);
return ret;
@@ -59,7 +59,7 @@ ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char
*fmt, ...)
va_list ap;
va_start(ap, fmt);
- ret = virtio_pdu_vunmarshal(pdu, offset, fmt, ap);
+ ret = pdu->s->transport->pdu_vunmarshal(pdu, offset, fmt, ap);
va_end(ap);
return ret;
@@ -67,7 +67,7 @@ ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char
*fmt, ...)
static void pdu_push_and_notify(V9fsPDU *pdu)
{
- virtio_9p_push_and_notify(pdu);
+ pdu->s->transport->push_and_notify(pdu);
}
static int omode_to_uflags(int8_t mode)
@@ -1751,7 +1751,7 @@ static void v9fs_init_qiov_from_pdu(QEMUIOVector *qiov,
V9fsPDU *pdu,
struct iovec *iov;
unsigned int niov;
- virtio_init_iov_from_pdu(pdu, &iov, &niov, is_write);
+ pdu->s->transport->init_iov_from_pdu(pdu, &iov, &niov, is_write);
qemu_iovec_init_external(&elem, iov, niov);
qemu_iovec_init(qiov, niov);
diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h
index 07cee01..ab398d0 100644
--- a/hw/9pfs/9p.h
+++ b/hw/9pfs/9p.h
@@ -230,6 +230,7 @@ typedef struct V9fsState
enum p9_proto_version proto_version;
int32_t msize;
V9fsPDU pdus[MAX_REQ];
+ struct V9fsTransport *transport;
/*
* lock ensuring atomic path update
* on rename.
@@ -343,4 +344,21 @@ void pdu_free(V9fsPDU *pdu);
void pdu_submit(V9fsPDU *pdu);
void v9fs_reset(V9fsState *s);
+struct V9fsTransport {
+ ssize_t (*pdu_vmarshal)(V9fsPDU *pdu, size_t offset, const char *fmt,
va_list ap);
+ ssize_t (*pdu_vunmarshal)(V9fsPDU *pdu, size_t offset, const char
*fmt, va_list ap);
+ void (*init_iov_from_pdu)(V9fsPDU *pdu, struct iovec **piov,
+ unsigned int *pniov, bool is_write);
+ void (*push_and_notify)(V9fsPDU *pdu);
+};
+
+static inline int v9fs_register_transport(V9fsState *s, struct V9fsTransport
*t)
+{
+ if (s->transport) {
+ return -EINVAL;
+ }
+ s->transport = t;
+ return 0;
+}
+
#endif
diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c
index 1782e4a..e1a37a4 100644
--- a/hw/9pfs/virtio-9p-device.c
+++ b/hw/9pfs/virtio-9p-device.c
@@ -20,7 +20,9 @@
#include "hw/virtio/virtio-access.h"
#include "qemu/iov.h"
-void virtio_9p_push_and_notify(V9fsPDU *pdu)
+static struct V9fsTransport virtio_9p_transport;
+
+static void virtio_9p_push_and_notify(V9fsPDU *pdu)
{
V9fsState *s = pdu->s;
V9fsVirtioState *v = container_of(s, V9fsVirtioState, state);
@@ -126,6 +128,7 @@ static void virtio_9p_device_realize(DeviceState *dev,
Error **errp)
v->config_size = sizeof(struct virtio_9p_config) + strlen(s->fsconf.tag);
virtio_init(vdev, "virtio-9p", VIRTIO_ID_9P, v->config_size);
v->vq = virtio_add_queue(vdev, MAX_REQ, handle_9p_output);
+ v9fs_register_transport(s, &virtio_9p_transport);
out:
return;
@@ -148,7 +151,7 @@ static void virtio_9p_reset(VirtIODevice *vdev)
v9fs_reset(&v->state);
}
-ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset,
+static ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset,
const char *fmt, va_list ap)
{
V9fsState *s = pdu->s;
@@ -158,7 +161,7 @@ ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset,
return v9fs_iov_vmarshal(elem->in_sg, elem->in_num, offset, 1, fmt, ap);
}
-ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset,
+static ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset,
const char *fmt, va_list ap)
{
V9fsState *s = pdu->s;
@@ -168,7 +171,7 @@ ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset,
return v9fs_iov_vunmarshal(elem->out_sg, elem->out_num, offset, 1, fmt,
ap);
}
-void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov,
+static void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov,
unsigned int *pniov, bool is_write)
{
V9fsState *s = pdu->s;
@@ -184,6 +187,13 @@ void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec
**piov,
}
}
+static struct V9fsTransport virtio_9p_transport = {
+ .pdu_vmarshal = virtio_pdu_vmarshal,
+ .pdu_vunmarshal = virtio_pdu_vunmarshal,
+ .init_iov_from_pdu = virtio_init_iov_from_pdu,
+ .push_and_notify = virtio_9p_push_and_notify,
+};
+
/* virtio-9p device */
static const VMStateDescription vmstate_virtio_9p = {
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
index 52c4b9d..e763da2c 100644
--- a/hw/9pfs/virtio-9p.h
+++ b/hw/9pfs/virtio-9p.h
@@ -14,15 +14,6 @@ typedef struct V9fsVirtioState
V9fsState state;
} V9fsVirtioState;
-void virtio_9p_push_and_notify(V9fsPDU *pdu);
-
-ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset,
- const char *fmt, va_list ap);
-ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset,
- const char *fmt, va_list ap);
-void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov,
- unsigned int *pniov, bool is_write);
-
#define TYPE_VIRTIO_9P "virtio-9p-device"
#define VIRTIO_9P(obj) \
OBJECT_CHECK(V9fsVirtioState, (obj), TYPE_VIRTIO_9P)
--
1.9.1
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