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virtio-net: add migration support for RSS and hash report

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Save and restore RSS/hash report configuration.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Yuri Benditovich 2020-05-08 15:59:33 +03:00 • committed by Jason Wang
parent ff4e6d545d
commit e41b711485
1 changed files with 37 additions and 0 deletions
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37
hw/net/virtio-net.c
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@ -2777,6 +2777,13 @@ static int virtio_net_post_load_device(void *opaque, int version_id)
} }
} }
if (n->rss_data.enabled) {
trace_virtio_net_rss_enable(n->rss_data.hash_types,
n->rss_data.indirections_len,
sizeof(n->rss_data.key));
} else {
trace_virtio_net_rss_disable();
}
return 0; return 0;
} }
@ -2954,6 +2961,32 @@ static const VMStateDescription vmstate_virtio_net_has_vnet = {
}, },
}; };
static bool virtio_net_rss_needed(void *opaque)
{
return VIRTIO_NET(opaque)->rss_data.enabled;
}
static const VMStateDescription vmstate_virtio_net_rss = {
.name = "virtio-net-device/rss",
.version_id = 1,
.minimum_version_id = 1,
.needed = virtio_net_rss_needed,
.fields = (VMStateField[]) {
VMSTATE_BOOL(rss_data.enabled, VirtIONet),
VMSTATE_BOOL(rss_data.redirect, VirtIONet),
VMSTATE_BOOL(rss_data.populate_hash, VirtIONet),
VMSTATE_UINT32(rss_data.hash_types, VirtIONet),
VMSTATE_UINT16(rss_data.indirections_len, VirtIONet),
VMSTATE_UINT16(rss_data.default_queue, VirtIONet),
VMSTATE_UINT8_ARRAY(rss_data.key, VirtIONet,
VIRTIO_NET_RSS_MAX_KEY_SIZE),
VMSTATE_VARRAY_UINT16_ALLOC(rss_data.indirections_table, VirtIONet,
rss_data.indirections_len, 0,
vmstate_info_uint16, uint16_t),
VMSTATE_END_OF_LIST()
},
};
static const VMStateDescription vmstate_virtio_net_device = { static const VMStateDescription vmstate_virtio_net_device = {
.name = "virtio-net-device", .name = "virtio-net-device",
.version_id = VIRTIO_NET_VM_VERSION, .version_id = VIRTIO_NET_VM_VERSION,
@ -3004,6 +3037,10 @@ static const VMStateDescription vmstate_virtio_net_device = {
has_ctrl_guest_offloads), has_ctrl_guest_offloads),
VMSTATE_END_OF_LIST() VMSTATE_END_OF_LIST()
}, },
.subsections = (const VMStateDescription * []) {
&vmstate_virtio_net_rss,
NULL
}
}; };
static NetClientInfo net_virtio_info = { static NetClientInfo net_virtio_info = {