qemu-nbd: remove data_size argument to nbd_trip

The size of the buffer is in practice part of the protocol.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/nbd.h b/nbd.h
index ebdb2dbf41..dbc4c0d627 100644
--- a/nbd.h
+++ b/nbd.h
@@ -57,6 +57,8 @@ enum {
 
 #define NBD_DEFAULT_PORT	10809
 
+#define NBD_BUFFER_SIZE (1024*1024)
+
 size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
 int tcp_socket_outgoing(const char *address, uint16_t port);
 int tcp_socket_incoming(const char *address, uint16_t port);
@@ -72,7 +74,7 @@ int nbd_init(int fd, int csock, uint32_t flags, off_t size, size_t blocksize);
 int nbd_send_request(int csock, struct nbd_request *request);
 int nbd_receive_reply(int csock, struct nbd_reply *reply);
 int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,
-             uint32_t nbdflags, uint8_t *data, int data_size);
+             uint32_t nbdflags, uint8_t *data);
 int nbd_client(int fd);
 int nbd_disconnect(int fd);