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authorMichael S. Tsirkin <mst@redhat.com>2012-11-01 09:16:22 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-02 21:29:57 -0400
commite19d6763cc300fcb706bd291b24ac06be71e1ce6 (patch)
tree05608ee69740360480b4c66a368eb21987993058 /drivers/vhost/vhost.h
parent202975b4c522c197e4e2269d389aafbf056a4c37 (diff)
downloadlinux-e19d6763cc300fcb706bd291b24ac06be71e1ce6.tar.bz2
skb: report completion status for zero copy skbs
Even if skb is marked for zero copy, net core might still decide to copy it later which is somewhat slower than a copy in user context: besides copying the data we need to pin/unpin the pages. Add a parameter reporting such cases through zero copy callback: if this happens a lot, device can take this into account and switch to copying in user context. This patch updates all users but ignores the passed value for now: it will be used by follow-up patches. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/vhost/vhost.h')
-rw-r--r--drivers/vhost/vhost.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 1125af3d27d1..2de4ce2fec40 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -191,7 +191,7 @@ bool vhost_enable_notify(struct vhost_dev *, struct vhost_virtqueue *);
int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
unsigned int log_num, u64 len);
-void vhost_zerocopy_callback(struct ubuf_info *);
+void vhost_zerocopy_callback(struct ubuf_info *, bool);
int vhost_zerocopy_signal_used(struct vhost_virtqueue *vq);
#define vq_err(vq, fmt, ...) do { \