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authorMichael S. Tsirkin <mst@redhat.com>2015-06-29 12:16:25 +0300
committerMichael S. Tsirkin <mst@redhat.com>2015-07-01 11:11:17 +0300
commit8b0a9d42301e45d501d751074a6f767fded680b1 (patch)
treef466ecfc783ec76fb5da6a60da8a848bf76da04c /include/uapi/linux/virtio_net.h
parent59a5b0f7bf74f88da6670bcbf924d8cc1e75b1ee (diff)
downloadlinux-8b0a9d42301e45d501d751074a6f767fded680b1.tar.xz
virtio_net: document VIRTIO_NET_CTRL_GUEST_OFFLOADS
Document VIRTIO_NET_CTRL_GUEST_OFFLOADS and the relevant feature bits. Will allow ethtool control of the offloads down the road. Reported-by: Yan Vugenfirer <yan@daynix.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/uapi/linux/virtio_net.h')
-rw-r--r--include/uapi/linux/virtio_net.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index 7bbee79ca293..ec32293a00db 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -34,6 +34,7 @@
/* The feature bitmap for virtio net */
#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */
#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */
+#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */
#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */
#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */
#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */
@@ -226,4 +227,19 @@ struct virtio_net_ctrl_mq {
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
+/*
+ * Control network offloads
+ *
+ * Reconfigures the network offloads that Guest can handle.
+ *
+ * Available with the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature bit.
+ *
+ * Command data format matches the feature bit mask exactly.
+ *
+ * See VIRTIO_NET_F_GUEST_* for the list of offloads
+ * that can be enabled/disabled.
+ */
+#define VIRTIO_NET_CTRL_GUEST_OFFLOADS 5
+#define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET 0
+
#endif /* _LINUX_VIRTIO_NET_H */