vmci: propagate msghdr all way down to __qp_memcpy_to_queue()

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

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 10 insertions, 11 deletions

diff --git a/drivers/misc/vmw_vmci/vmci_queue_pair.c b/drivers/misc/vmw_vmci/vmci_queue_pair.c
index 7aaaf51e1596..35f19a683822 100644
--- a/drivers/misc/vmw_vmci/vmci_queue_pair.c
+++ b/drivers/misc/vmw_vmci/vmci_queue_pair.c
@@ -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 &&
diff --git a/include/linux/vmw_vmci_api.h b/include/linux/vmw_vmci_api.h
index 5691f752ce8f..63df3a2a8ce5 100644
--- a/include/linux/vmw_vmci_api.h
+++ b/include/linux/vmw_vmci_api.h
@@ -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,
diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index 02d2e5229240..7f3255084a6c 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -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)