Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

[pandora-kernel.git] / drivers / vhost / vhost.h

diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index af3c11d..073d06a 100644 (file)
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -15,11 +15,6 @@
 
 struct vhost_device;
 
-enum {
-       /* Enough place for all fragments, head, and virtio net header. */
-       VHOST_NET_MAX_SG = MAX_SKB_FRAGS + 2,
-};
-
 struct vhost_work;
 typedef void (*vhost_work_fn_t)(struct vhost_work *work);
 
@@ -93,12 +88,15 @@ struct vhost_virtqueue {
        bool log_used;
        u64 log_addr;
 
-       struct iovec indirect[VHOST_NET_MAX_SG];
-       struct iovec iov[VHOST_NET_MAX_SG];
-       struct iovec hdr[VHOST_NET_MAX_SG];
+       struct iovec iov[UIO_MAXIOV];
+       /* hdr is used to store the virtio header.
+        * Since each iovec has >= 1 byte length, we never need more than
+        * header length entries to store the header. */
+       struct iovec hdr[sizeof(struct virtio_net_hdr_mrg_rxbuf)];
+       struct iovec *indirect;
        size_t vhost_hlen;
        size_t sock_hlen;
-       struct vring_used_elem heads[VHOST_NET_MAX_SG];
+       struct vring_used_elem *heads;
        /* We use a kind of RCU to access private pointer.
         * All readers access it from worker, which makes it possible to
         * flush the vhost_work instead of synchronize_rcu. Therefore readers do
@@ -109,7 +107,7 @@ struct vhost_virtqueue {
        void __rcu *private_data;
        /* Log write descriptors */
        void __user *log_base;
-       struct vhost_log log[VHOST_NET_MAX_SG];
+       struct vhost_log *log;
 };
 
 struct vhost_dev {