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authorrusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652>2014-01-23 01:58:05 +0000
committerrusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652>2014-01-23 01:58:05 +0000
commit6779cafec5cbbffc6f6eb6ba3ef7f213124fa2b5 (patch)
treeb0e2fdf1e50c23082af5c863b3f3572e7644feae
parent75f991bc5eae472cdee81bb1b0cc50cc50f09405 (diff)
Michael's patch adding MQ support added some u16s; they are u16 in
legacy mode but should be le16 for modern devices. Signed-off-by: Rusty Russell <rusty@au1.ibm.com> git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@190 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
-rw-r--r--content.tex10
1 files changed, 7 insertions, 3 deletions
diff --git a/content.tex b/content.tex
index 803615d..b038b0c 100644
--- a/content.tex
+++ b/content.tex
@@ -2440,12 +2440,12 @@ is negotiated. Legal values for this field are 1 to 0x8000.
struct virtio_net_config {
u8 mac[6];
le16 status;
- u16 max_virtqueue_pairs;
+ le16 max_virtqueue_pairs;
};
\end{lstlisting}
\subsubsection{Legacy Interface: Device configuration layout}\label{sec:Device Types / Network Device / Device configuration layout / Legacy Interface: Device configuration layout}
-For legacy devices, the status field in struct virtio_net_config is the
+For legacy devices, the status and max_virtqueue_pairs fields in struct virtio_net_config are the
native endian of the guest rather than (necessarily) little-endian.
@@ -2851,7 +2851,7 @@ depending on the packet flow.
\begin{lstlisting}
struct virtio_net_ctrl_mq {
- u16 virtqueue_pairs;
+ le16 virtqueue_pairs;
};
#define VIRTIO_NET_CTRL_MQ 4
@@ -2884,6 +2884,10 @@ transmitq1..transmitqN (i.e. other than transmitq0); accordingly,
the driver MUST NOT transmit new packets on virtqueues other than
transmitq0.
+\subparagraph{Legacy Interface: Automatic receive steering in multiqueue mode}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Automatic receive steering in multiqueue mode / Legacy Interface: Automatic receive steering in multiqueue mode}
+For legacy devices, the virtqueue_paris field is in the
+native endian of the guest rather than (necessarily) little-endian.
+
\paragraph{Offloads State Configuration}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Offloads State Configuration}
If the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature is negotiated, the driver can