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vmci: propagate msghdr all way down to __qp_memcpy_to_queue()

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Switch from passing msg->iov_iter.iov to passing msg itself

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-27 19:52:04 -05:00
parent c3c1a7dbe2
commit 4c946d9c11
3 changed files with 10 additions and 11 deletions
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16
drivers/misc/vmw_vmci/vmci_queue_pair.c
View File

@ -370,12 +370,12 @@ static int __qp_memcpy_to_queue(struct vmci_queue *queue,
to_copy = size - bytes_copied;
if (is_iovec) {
struct iovec *iov = (struct iovec *)src;
struct msghdr *msg = (struct msghdr *)src;
int err;
/* The iovec will track bytes_copied internally. */
err = memcpy_fromiovec((u8 *)va + page_offset,
iov, to_copy);
err = memcpy_from_msg((u8 *)va + page_offset,
msg, to_copy);
if (err != 0) {
if (kernel_if->host)
kunmap(kernel_if->u.h.page[page_index]);
@ -580,7 +580,7 @@ static int qp_memcpy_from_queue(void *dest,
*/
static int qp_memcpy_to_queue_iov(struct vmci_queue *queue,
u64 queue_offset,
const void *src,
const void *msg,
size_t src_offset, size_t size)
{
@ -588,7 +588,7 @@ static int qp_memcpy_to_queue_iov(struct vmci_queue *queue,
* We ignore src_offset because src is really a struct iovec * and will
* maintain offset internally.
*/
return __qp_memcpy_to_queue(queue, queue_offset, src, size, true);
return __qp_memcpy_to_queue(queue, queue_offset, msg, size, true);
}
/*
@ -3223,13 +3223,13 @@ EXPORT_SYMBOL_GPL(vmci_qpair_peek);
* of bytes enqueued or < 0 on error.
*/
ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
void *iov,
struct msghdr *msg,
size_t iov_size,
int buf_type)
{
ssize_t result;
if (!qpair || !iov)
if (!qpair)
return VMCI_ERROR_INVALID_ARGS;
qp_lock(qpair);
@ -3238,7 +3238,7 @@ ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
result = qp_enqueue_locked(qpair->produce_q,
qpair->consume_q,
qpair->produce_q_size,
iov, iov_size,
msg, iov_size,
qp_memcpy_to_queue_iov);
if (result == VMCI_ERROR_QUEUEPAIR_NOT_READY &&

2
include/linux/vmw_vmci_api.h
View File

@ -74,7 +74,7 @@ ssize_t vmci_qpair_dequeue(struct vmci_qp *qpair,
ssize_t vmci_qpair_peek(struct vmci_qp *qpair, void *buf, size_t buf_size,
int mode);
ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
void *iov, size_t iov_size, int mode);
struct msghdr *msg, size_t iov_size, int mode);
ssize_t vmci_qpair_dequev(struct vmci_qp *qpair,
struct msghdr *msg, size_t iov_size, int mode);
ssize_t vmci_qpair_peekv(struct vmci_qp *qpair, struct msghdr *msg, size_t iov_size,

3
net/vmw_vsock/vmci_transport.c
View File

@ -1850,8 +1850,7 @@ static ssize_t vmci_transport_stream_enqueue(
struct msghdr *msg,
size_t len)
{
/* XXX: stripping const */
return vmci_qpair_enquev(vmci_trans(vsk)->qpair, (struct iovec *)msg->msg_iter.iov, len, 0);
return vmci_qpair_enquev(vmci_trans(vsk)->qpair, msg, len, 0);
}
static s64 vmci_transport_stream_has_data(struct vsock_sock *vsk)