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| author | Akihiko Odaki <akihiko.odaki@daynix.com> | 2025-05-30 13:33:21 +0900 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-07-14 05:25:34 -0400 |
| commit | 729b5734197d1afad364bb025a827438bb85e050 (patch) | |
| tree | 1a79631438a674686bfa2bf92e89b206be7fa6a3 | |
| parent | abef963a12e2bc266884b27677ff3cf94c09e512 (diff) | |
| download | qemu-729b5734197d1afad364bb025a827438bb85e050.zip qemu-729b5734197d1afad364bb025a827438bb85e050.tar.gz qemu-729b5734197d1afad364bb025a827438bb85e050.tar.bz2 | |
virtio-net: Add hash type options
By default, virtio-net limits the hash types that will be advertised to
the guest so that all hash types are covered by the offloading
capability the client provides. This change allows to override this
behavior and to advertise hash types that require user-space hash
calculation by specifying "on" for the corresponding properties.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250530-vdpa-v1-6-5af4109b1c19@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/net/virtio-net.c | 45 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-net.h | 1 |
2 files changed, 44 insertions, 2 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 9888ff2..6af230b 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3959,9 +3959,14 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp) if (qemu_get_vnet_hash_supported_types(qemu_get_queue(n->nic)->peer, &n->rss_data.peer_hash_types)) { n->rss_data.peer_hash_available = true; - n->rss_data.supported_hash_types = n->rss_data.peer_hash_types; + n->rss_data.supported_hash_types = + n->rss_data.specified_hash_types.on_bits | + (n->rss_data.specified_hash_types.auto_bits & + n->rss_data.peer_hash_types); } else { - n->rss_data.supported_hash_types = VIRTIO_NET_RSS_SUPPORTED_HASHES; + n->rss_data.supported_hash_types = + n->rss_data.specified_hash_types.on_bits | + n->rss_data.specified_hash_types.auto_bits; } } @@ -4178,6 +4183,42 @@ static const Property virtio_net_properties[] = { VIRTIO_NET_F_GUEST_USO6, true), DEFINE_PROP_BIT64("host_uso", VirtIONet, host_features, VIRTIO_NET_F_HOST_USO, true), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-ipv4", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_IPv4 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-tcp4", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_TCPv4 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-udp4", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_UDPv4 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-ipv6", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_IPv6 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-tcp6", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_TCPv6 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-udp6", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_UDPv6 - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-ipv6ex", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_IPv6_EX - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-tcp6ex", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_TCPv6_EX - 1, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO_BIT64("hash-udp6ex", VirtIONet, + rss_data.specified_hash_types, + VIRTIO_NET_HASH_REPORT_UDPv6_EX - 1, + ON_OFF_AUTO_AUTO), }; static void virtio_net_class_init(ObjectClass *klass, const void *data) diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index c4957c4..73fdefc 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -148,6 +148,7 @@ typedef struct VirtioNetRssData { uint32_t runtime_hash_types; uint32_t supported_hash_types; uint32_t peer_hash_types; + OnOffAutoBit64 specified_hash_types; uint8_t key[VIRTIO_NET_RSS_MAX_KEY_SIZE]; uint16_t indirections_len; uint16_t *indirections_table; |