virtio-net: implement RSS configuration command

Optionally report RSS feature.
Handle RSS configuration command and keep RSS parameters
in virtio-net device context.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index 96c68d4..d3fad7c 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -126,6 +126,18 @@ typedef struct VirtioNetRscChain {
 /* Maximum packet size we can receive from tap device: header + 64k */
 #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 * KiB))
 
+#define VIRTIO_NET_RSS_MAX_KEY_SIZE     40
+#define VIRTIO_NET_RSS_MAX_TABLE_LEN    128
+
+typedef struct VirtioNetRssData {
+    bool    enabled;
+    uint32_t hash_types;
+    uint8_t key[VIRTIO_NET_RSS_MAX_KEY_SIZE];
+    uint16_t indirections_len;
+    uint16_t *indirections_table;
+    uint16_t default_queue;
+} VirtioNetRssData;
+
 typedef struct VirtIONetQueue {
     VirtQueue *rx_vq;
     VirtQueue *tx_vq;
@@ -199,6 +211,7 @@ struct VirtIONet {
     bool failover;
     DeviceListener primary_listener;
     Notifier migration_state;
+    VirtioNetRssData rss_data;
 };
 
 void virtio_net_set_netclient_name(VirtIONet *n, const char *name,